Document 93BOJOk2LnLDn3XZ4p0xq3DEV

The American Ceramic Society BULLETIN A Monthly Publication Devoted to Proceedin$s of The Society, Discussions of Plant Problems, Discussions of Technical, Scientific, and Art Questions, and Promotion of Cooperative Research Volume 28,1949 Charles S. Pearce, Editor Harold L. Dakin, Assistant Editor Luther E. Ohrstedt, Advertising Minogtr Committee on Publieetionv Kerf Schwartxwalder, Chairman/ R. E. Bitch, J. J. Canfield, C. H. Hehncr, and C S. Pearce (ex officio). Contributing Editors: Officer* of Industrial Divisions and Local Sections (For names, see back of Tide Page) Executive, Editorial, and Advertising Offices: 2525 North High Street, Columbus 2, Ohio Publication Office: 20th and Northampton Streets, Easton, Pa. * r * DUST CONTROL IN THE CERAMIC INDUSTRIES* Br v.C. L. HeusonI Tliis subject will never be more timely than at the pres ent period of unprecedented plant expansion and plant improvement. When plans of this nature are under con sideration, dust control aspects should also be considered. Will the new equipment be mare or less dusty than the process it will replace? What plans should be made to eliminate dust? I. Dust Control in Relation to Modernization Plans The cost of dust control causes many a plant manager to hesitate when he is fundamentally dissatisfied with the offending process itself from the production standpoint. He is concerned with the expense of a dust control system that may be obsolete when the process itself is eliminated. In any progressive company modernization is a continual process, and if needed dust control were to be postponed wherever there is thought of changing the equipment it would wait forever. The three possible courses of action in these circum stances are (1) postpone the dust control expenditure until the new process has been installed, (2) install a first-class system which would be discarded when the process change developed, and (3) install makeshift dust control. If it appears that none of these policies fit a given situa tion and, particularly, if the costs would really be ex cessive for the time period before reconstruction, it is well to re-examine the particular plans for dust control to see if they are not unduly elaborate for the circumstances. II. Raw Materials Handling t Car unloading, storage, removal from storage to weighing and mixing equipment are operations that are common to all ceramic industries and these operations are inherently dusty. They are taken up in order. (1) Car Unloading, Manual ..The commonest method of shipment of clays, flint, and spar is by bulk is box cars with unloading commonly done manually by wheelbarrow. By modem industrial standards this is a crude method of WnHting, but it is easily understood on the basis of rela tive costs of raw materials and of product. A cost of 40 to 50 cents per ton to unload a raw material by hand is an extremely small proportion of the selling price of about 5300 to 5400 per ton, using figures of the dinnerware in dustry. Economic incentives, therefore, for installation of silo storage and mechanical handling have not been great for the small plant, i.e., one handling small tonnages. From the same facts it follows that the cost of the pro duct could not be greatly affected by an ordinary increase in handling costs in this department. Nevertheless, we thinif it is fairly obvious that manual handling methods will continue to be common for a long time. .Presented at the 49th Annual Meeting of The Ameri can'Ceramic Society, Atlantic City, N. J., April 24, 1947 (Materials and Equipment Division, No. 11). t Engineering Director, Industrial Hygiene Foundation, Mellon Institute, Pittsburgh, Pa. Looking at the problem, for the moment, from the stand, point of the small plant operator who believes that he c^. not justify the capital expenditure for mechanical convey^ ' unjoades and silo storage bins, what practical, efficacy methods are available? * In considering question it is necessary to recog^ that the requirement for success is that the do^ that may cause silicosis be completely controlled, means that if the dust from pulverized silica and from silj^ sand can be completely suppressed, the minimum require meats are satisfied. (2) Flint Dust Control There is no way of eliminating the silicosis hazard ^ manual unloading of box cars of flint by exhaust ventil*. tioa. If there were a procedure whereby such hazardous dusty materials could be made dustless by incorporating an addi. tion agent at the point of shipment h would be adva&. tageous. Water is such an agent and it has, in fact, be-, the practice in some sections of the dinnerware potter; industry for more than 10 years to require the supplier t& incorporate small quantities of water in flint at the point of shipment. Some extensive measurements have indicated that *hea properly done the effects of 2 to 3% moisture in dust sup. pression are literally marvelous. This procedure is ca pableof completely suppressing flint dust to concentrations below the hazardous level--as applied to the manual unloading operation. . The procedure is of much broader importance than la this particular material. It will be useful in suppression the dust, in similar handling of feldspar and of such ms. terials os silica cement for use is refractory furnace con struction. (3) B*g Shipment It might be thought that shipment of flint in paper bap would be of great advantage in eliminating dust in a: unloading, but in most instances this is not true. Sifting of material from bag openings and breakage of bags a transit distribute dry dust throughout the pile and this results in excessive concentrations of flint dust during or unloading. For ordinary handling methods, therefore, ba* shipment of flint is no solution to the problem of prevents* serious silica dust exposure in raw material handling. In summary, we know of no practical method tor tit quate control of flint dust in manual unloading methods, those that require a man to go into the car, other than bj rendering the material dustless. Any arrangements that lessen or eliminate the time sped in the car are, of course, aids in reduction of total dust aposure. These include bin conveyors where wheelbano* travel ends at the car door and a drag line scoop whB scrapes material from the car interior to a conveyor, requiring an inside scoop operator and others only an oatside operator. The miniature power shovel developoed is in a similar general category but, obviously, with min superior features. 94 Vol. 28, ^o.l LINE FF KtNYON UNL Oft PNEUMA* CDNYEYOR unloader FUb III. Ov Overhead' storage equipment. Some < viously outlined ar overhead bins, but a would employ, for sii 8 car unloading proct ^cape of any dust, per bottom cars whic veys it to tbe bins, or a pneumatic pipe lin Use of these arran; in car unloading of fl flowing material that tbe clays that cannot is not related to tbe formed in removal fre of by separate measu In glass plants, disi or with trippers, abo' Belt conveyors are fa to resist the abrasive they do not simplify are definitely not th materialslike soda asl is readily controlled fc transfer from elevatoi and exhausted sand bi IV. w Dust caused by wi bins into a weigh car point of discharge; its available space and tl car, etc. It may be done b; weigh car and surrou Partially enclosed wej{ the charging tunnel as Scale cars in-some c: and dust collector mou (1949) Dust Control in the Ceramic Industries 95 -7 ii a- ill. Overhead Bins, Silos, Etc. (1) Morris System -2D Overhead storage bins mean mechanical conveying The Morris patent describes an ingenious arrangement -y equipment. Some of the methods of car unloading pre- for exhausting the weigh car of a whiteware plant re to ?i0UsIy outlined are often used in conjunction with gardless of its position on the tracks, fljpo* nearly all of :nt overhead bins, but any modem installation of storage bins the dust in shoveling material from one point to another *ould employ, for silica or other free flowing dust material, occurs at the receiving pile (in this case the weigh car), it :en * car unloading procedure that would prevent formation or is apparent that it provides an effective measure for dust -P- ecape of any dust. The material may be shipped in hop control at that point, and this applies to the clays that per bottom cars which discharge into equipment that con are shoveled. In the case of flint and feldspar, all dust is aas veys it to the bins, or it may be unloaded from box cars by controlled because the weigh car is filled from storage silos car t pneumatic pipe line or by pump. by screw feeders and dust originates only at the point of Use of these arrangements eliminate the silicosis hazard screw discharge. /or -ing tu car unloading of flint and sand as well as any other free flowing material that may contain free silica. Dust from (S) Exheuitinj Charging Point aa> mn- the days that cannot be so handled is unchanged, but this is not related to the problem of silicosis control. Dust {armed in removal from the storage bin must be taken care Exhausting the point where weigh material is discharged is not a difficult problem, using conventional design proce dures, whether it be dropped by gravity into an elevator of by separate measures. boot, or shoveled into a blungtr or into a skip hoist. In glass plants, distributing belts in shuttle arrangement or with trippers, above open-top bins, are not uncommon. Belt conveyors are favored because they are best adapted to resist the abrasive action of ceramic raw materials but they do not simplify the problem of dust control. They trt definitely not the conveyor of choice for fine dusty materials like soda ash, spar, etc. For other materials dust steadily controlled by installation of exhaust at points of transfer from elevator to belt or from belt to bin. Covered and exhausted sand bins are a primary necessity. (3) Wet Method* Anyone who has watched the back-breaking, laborious and primitive methods of charging a mixer or blunger in a pottery plant is given to the thought, "There must be a better way of doing this." The problem of weighing a continuous stream of dry materials accurately has not been solved in any simple and foolproof way. On the other hand liquids are easily measured accurately.. This suggests, for certain ceramic industries, incorporating the dry raw materials with water IV. Weighing end Charging Dust caused by withdrawal of material from overhead bios into a weigh car may be controlled by exhaust at the point of discharge; its physical form will be determined by available space and the arrangements of bin spouts, weigh , etc. It may be done by a booth-type hood fixed over the *ogh car and surrounding the chute, by exhausting the Partially enclosed weigh car directly, or even by exhausting the charging tunnel as though it were a large booth. during unloading of the car and storing them as water sus pensions. Proportioning the raw materials without dust and accurately is, then, a simple procedure of liquid meter ing based on the solids content. Methods of this general nature should be particularly applicable to whiteware manufacturers in which the raw material mixing process ends up with considerable excess water anyway. This principle is employed in wet process cement plants, in English potteries, and recently in a far western sanitaryware plant (see Fig. 1). . Scale cars in some cases may be exhausted by a small fan (4) Periodic Kiln* ^ dust collector mounted on the carrying frame. In the setting and drawing of periodic kilns, dust con- uwa 96 American Ceramic Society Bulletin--Hemeon centrations usually do not exceed 5 to 10 million, less in the dust collector. Cloth type dust collectors are som*. setting than in drawing. Rarely, concentrations may at times so overloaded, unnecessarily, as to vitiate the effec tain 15 to 20 million is brick kilns. This dust exposure, tiveness of the entire exhaust system. If various dusty therefore, where dust contains little or no free silica, is un materials are served by the same exhaust system, the dust important. It may be important, however, in the case of is an unknown mixture and hence waste. silica brick. `An important rule is to arrange the exhaust intake The only control method applicable to control of this that the only material removed in the air stream is that dust is exhausting air from the kiln interior (by means of a already suspended in the air and locate the ends of exhaust portable unit) at a very high rate. Success in reduction of ducts connected to enclosures at remote points. This poi^ dust will depend upon the dustiness of the particular opera is illustrated in Fig. 2. tion, i.e., whether the rate of dust production is small The exhaust system is the most important element ia enough to be effectively diluted by practically attainable the engineering of dust control and adequate design is im. ventilation. perative. Nothing is more discouraging than the expend], tore of large stuns of money for a system which does not do Table I Estimated Relative Dustiness in Box Car Unloading The figures are related to an arbitrary scale where 1 represents dean industrial air; 5 the limit of permissibility for highly toxic dusts like flint; 25 is mildly disagreeable though tolerable for nuisance dusts; and 50 to 100 is a good job or which requires constant attention for cleaain? out. On the other hand, an equally distressing design is one that is unduly extravagant and which consequently costs too much, exhausting twice as much air as required, and having also, perhaps, a dust collector of double the neces. sary size. intolerable as a dust nuisance. Unloading method Moist materials Wheelbarrow into bin Wheelbarrow to conveyor Drag line scoop--in car Drag line scoop--outside operator Power shovel Bag shipment 5 5' 5* 0-5* 5* Dry materials 50-100. 50* 75* 0-25* 25* 25-50 V. Nuisance Dust and Silicosis Dust From time to time in the preceding discussion the writer has referred to silicosis hazards and to excessive dust. This is an important distinction. Silicosis is a pathological condition that may lead to disability and results from yean of exposure to certain concentrations of dust that contain free silica. Excessive concentrations of other dusts con The indicated method, by reducing the labor time, stitute a nuisance, are intolerable and not excusable on any may reduce the dust exposure in some instances. economic grounds. It is imperative to clear thinking that Table II this distinction be made, because while it is agreed that both types of dust exposures must be eliminated, the two Estimated Relative Dustiness in Weighing (From Storage) and Charging are separate problems and have altogether different degrees of urgency. Figures are based on the same dust concentration scale If there is a silicosis hazard there can be no question of as in Table I. economics or of economic balances; the hazard must be Sasdliog method Gravity discharge (overhead bins) Shoveling (floor Moist Dry Control method materials materials (dry material) (Not ap- 50-100 Local exhaust plicable) 2 50-100 (a) High ex eliminated with the least possible delay. If there is not a silicosis hazard but dust is still present in such concentrations as to constitute definitely disagree able working conditions, plans for its control should also bins) haust rate be instituted, but studies planned for maximum economy from bins (and possibly stepwise installation of dust control equip (only in sum mer) ment) may proceed with more deliberation. Bags (Not ap- 10-20 (6) Scale exhaust car (1) What Is Excessive Dust? Definitions of excessive nuisance dust concentrations plicable) (the dust being inert) vary throughout industry generally Charging mixer, biunger, mill, etc. Gravity, to a 50-100 Exhaust hopper pretty much proportionally to the difficulty of dust control Continuous exposures in excess of 50 to 100 million cannot be considered acceptable anywhere. In ceramic plants, hopper arbitrary limits varying from 25 to 50 million have been srt Shoveling * 50-100 Exhaust mixer by some plant operators for plant cleanliness, and in st opening least one plant the management has set for themselves s (5) Product !i Dust limit of 10 million. Perhaps the most significant characteristic of the ceramic VI. Measuring the Silicosis Hazard dust control problem is that the dust is a part of the prod Nuisance dust exposure is readily measured by conven uct, or the product itself is dust, and not an incidental tional dust counting methods. These techniques deter material as in some other dusty industries. Where ex mine total dust. Measuring the silicosis hazard on the haust systems `are employed for dust control in the raw other hand requires supplementary techniques to deter material handling, every effort should, therefore, be made mine how much free silica is in that dust. (The most re to reduce unnecessary transportation of useful material to liable determinations of free silica are made by X-rV Vol. 28. No. 3 *VRCt\G W ft a 7[\Z 2Q-A WRONG Fic. 2.--Needless ; diffraction.) Furth: critical since only dt few microns in contains particles of sample from the star give misleading resul: To ensure that tb cared for, eniighteaec tain information as tc and arrange for perioc workers. Vfl. Natur Table III attempt hazard from dust in x common ceramic inch the hazard in a giver (1) the inherent tori' silica content of the m ness. The silicosis hazard plants is variable. Ir on whether the meth batching operations it total dust exposure (c ing measures for its coc In silica brick man: silicosis are high. In i hazard is usually very exposure may be ver hazard is a direct functi Silicosis Dust Probi Industry Glass Silica brick Clay brick Pottery Mater Sand ' Ganister Refractc clays Flint (d; Flint (it (1) Economics of Dust Io factories where bobjective of dust coni dst to below 5 or 10 m: (1949) Dust Control in the Ceramic Industries 9? EFFORT-DOLLARS EXPENDED Fig. 3.--Diminishing returns in dust control. Vjl. Nature Silicosis Dust Problem T*We III attempts to represent the over-all relative frwfii from dust in raw material handling in four of the cannsoQ ceramic industries. This table emphasizes that the hazard in a given case is the product of two factors: (1) the inherent toxicity Which is governed by the free a&a content of the material, and (2) by its inherent dusti- The silicosis hazard in raw material handling in glass pbnts is variable. In sand car unloading it is dependent whether the methods employed make dust. In the tufghing operations it is nearly always very low, but the tool dust exposure (nonsiliceous) is high where engineerngmeasures for its control have not been instituted. In silica brick manufacture all dust factors respecting aUmsis are high. In refractories manufacture the silicosis bitrd is usually very low or nonexistent, but total dust opcstire may be very high. In potteries the silicosis bard is a direct function of the amount of flint dust. Table III Smcosis Dost Problem in Raw Material Handling bdwtty Material To*- Dusti. To*idty X ity acts dustiness Glass 2*3 brick Chy brick fcttey Sand ` Ganister Refractory clays Flint (dry) Flint (moist) High High Low High High Low Hi|h High High Low High-low High Low- medium High Low ft) Economies of Dust Control la factories where, by reason of the silicosis hazard, the *^)tive of dust control is to reduce concentrations of to below 5 or 10 million, and where there are numerous ttfcfi) sources of dust, a state of diminishing returns is commonly evident. Stepwise accomplishments measured in reduced dustiness cost more for each successive reduction in dust. (See Fig. 3.) This is just another way of saying that mooey expended for control of major dust sources accomplishes more in dust reduction than the same amount expended in the next step for control of lesser sources. The arrival of stage A or B, where residual dust remains in undesirable amounts, often inspires the remark to visitors, "You should have seen it when-- The first steps are concerned with control of obvious sources of dust. Beyond that point, the problem often becomes obscure. Important remaining causes of dust may not be obvious and their relative importance may not be dear. At this stage it is highly advantageous to as intelligent procedure to have definite knowledge of the remaining sources of dust and the relative amounts each contributes to the atmosphere. For example, studies in the ceramic industries indicate that the debris on floors (dust kicked into the air by walk ing) contributes a very small proportion of dust where total dust concentrations are higher than 4 to 5 million. This data enabled concentration of attention on other dust sources of more importance. If the economic situation at this stage is difficult, relative to estimated costs of fur ther improvement, arrangements should be made for measurements of total dust and its composition relative to free silica and consequent capacity to produce silicosis. If the writer appears to stress unduly the factor of costs in relation to dust control it is hoped that the distinction made between the two aspects of the problem will make clear the attempt to have them viewed in proper perspec tive, i.e., as separate problems. The writer is convinced that any remaining silicosis hazards in this industry could be eliminated within a couple of years if management were apprised of the facts. The silicosis hazard can be measured and methods for its elimination, practically, are available. Any ceramic plant with a dust hazard can eliminate it. All that is required is for the executive head to realize fully its importance to his company, to issue the orders that dust must go, and to maintain that interest through out the cleanup program. > i. r, > 6(* Directory of Corporation Members The Directory of Corporation Members of The American Ceramic Society is presented in the following p The companies listed here are the ones which are interested in the t^hnical development of the ceramic iadtrt^ These companies hire the technically trained men, buy and sell the latest machinery and equipment, and ti' the lead in the development of new equipment and processes. In each listing is included a description of the company's products and processes or the services it offers tv industry.' Also included is the name of the member of the company management who represents the comra* in Society affairs as Corporation Voter. The support given to The American Ceramic Society by these Corporation Members helps make posavu much of the publishing activity and much of the help given the Local Sections. The Society is taking this mea * of recognizing those companies which assist in this important work. Abingdon Potteries, Lie. J. M. Lewis Abingdon, 111. Producers of vitreous china plumbing fixtures, vitreous china specialties, vitreous china art pottery, and kindred lines; a1n miners and grinders of the famous Abingdon feldspar. A C Spark Plug Div., General Karl Schwartzwalder Motors Corp. Flint 2, Mich. Manufacturers of automotive and aircraft products: spark plugs; ceramic insulators, thermistors, and resistors; oil filters, fuel pumps, air cleaners, speedometers, and other instruments. Adamston Flat Glass Co. Russell Rice Box 631, Clarksburg, W. Va. The products of this company, manufactured under the trade name Clearlile, are sheet glass of various thicknesses from (weighing approximately 14 to 16 ounces per square foot to 7/j inch) and bulb-edge glass for shelving, cabinets, and counter dividers. Akron Porcelain Co. F. W. Butler Akron 14, Ohio Manufacturers of special electrical porcelain parts which are made to the customers' specifications and blueprints by the dry-press process. More than half a century of experience in producing unglazed white porcelain, unglazed gray porcelain, and glazed porcelain for the electrical and communications industries. Alamo Pottery, Inc. W. H. Wallingford Box 4367, Station A, San Antonio, Texas Manufacturers of vitreous china and sanitaryware, com modes, and lavatories. Plants in San Antonio and Hondo, Texas. AilianceWare, Ltd. R. E. Strain Vancouver, Canada Began operations in July of 1946. Makers of porcelain enameled sanitaryware, architectural porcelain panels, porcelain enameled signs, table tops, etc. Imports pressed steel bathtubs, sinks, etc. for enameling and dis tribution in four western Canadian provinces. Alton Brick Co. Eben Rodgers, Jr* Alton, 111. ' Manufacturers of fire-clay and shale face brick, common brick, load-bearing and partition structural tile, paving brick, chimney tile, and Haydite concrete masonry units. Dealers in Insulux glass block, blazed brick, and tile. Sales office 3832 West Pine Blvd., St. Louis, Mo. Aluminum Co. of America, Chemicals Dir. J. R. Eckley Pittsburgh 19, Pa. Makers of more than 60 chemical products made from bauxite and fluorspar; many are used in refractories, glass, enamels, and porcelains. Materials are supplied in a variety of grades and specifications, including hydrated, activated, calcined, tabular and calcium aluminas, alu- American Clay Forming Co. Ross Stoff Tiffin, Ohio w Manufacturers of radiants and backwalls for gas heater* special refractories for oil- and gas-burning furnaces TTh special shapes of high-temperature refractories. ' 03 American Colloid Co. Paul Bechtn Merchandise Mart Plaza, Chicago 54, Hi. Producers of bentonite, with special grades for the ceram' industry. ra,c American Gas Association C. G. Serri. 420 Lexington Ave., New York 17, N. Y. a The central trade association serving all branches of the gas industry, including gas companies, gas-equipm4n. manufacturers, and several thousand individual members- maintains testing and research laboratories at Cleveland and Los Angeles where gas appliances are checked for compliance with American Standards Association require, ments; carries on extensive research program in ceramic field through the Industrial Gas Research Committee. American Glassware Association H. L. DilUneham 19 West 44th St., New York 18, N. Y. An association of pressed and blown glassware manufac turers which provides statistical information for its mem bers and represents them in governmental and public relations; maintains a traffic committee, a tariff committee, and other committees on special subjects. American Lava Corp. Paul J. Kruesi Chattanooga 5, Term. A pioneer manufacturer of steatite, titania, alumina, and other ceramic insulating materials for electrical, textile, chemical, and mechanical uses. Producers of AlSiMaf by extrusion, dry-pressing, and casting processes, with special surface treatments and precision ground for close tolerances; also Lava bodies to especially close dimensions for similar uses. American Nepheline Corp. H. R. Deeth Rochester 12, N. Y. Engaged in the production of Lakefield nepheline syenite. A granular product is produced for the gia*s industry 2nd a 200-mesh product for use in the whiteware and other ceramic industries. American Optical Co. E. D. Tillye' Soutbbridge, Mass. Manufacturers of ophthalmic instruments and equipment, spectacle frames and lenses; sunglasses, and industrial safety equipment. Through their Scientific Instrument Division, Buffalo, N. Y., they produce microscopes, pro jectors and other scientific instruments. American Porcelain Enamel Co. Robert Lot# 1285 E. Rearing Ave., Muskegon, Mich. Manufacturers of porcelain enamel frit for steel at tern- 8 Vol.28.No.8 pertstufes of Camels for crashing nu f^sistant eu. jynerican Pc Corp- j22 producers 0: cake, borax, ash, bromine pbate. Bore supplied is L j^jnerican Ra Sanitary C 15 Manufacture genuine vitre plumbing an< American Re 1872 Ra A national 0 . promoting th refractory ma American Sm Engaged in t ferrous metal junction with arsenic, cadre raw materials American Sto 1641 S. American Stc commercial f combination and furnaces. Louis. The Cleveland ant American Wu Fare Manufacturer 0.033 to 0.25C purposes; sp< Amsler Mortc Chamber Complete pla: drawn, polish> manufacturin; enameling; pt forming mack personnel. Anchor Hocki Anchorglass n: tumblers; met Fire-King Ove Axur-ite dinne kitchen, hotel and premium ; Arkeiex Cerar Manufacturer? or permanent bospiuis, fooc inches; two-pl Anaco Steel C Vmco is QQt (1949) ->Uowing pages. -imic industry* ..at, and take 3s it offers the 3 the company make possible -iug this -means ^ride, and fiu&. Ross Stoffer or gas heaters furnaces. and :nes. Paul Bechtner 34, IU. for the ceramic C. G- Segeler X. Y. oranches of the gas-equipment idual members; ;s at Cleveland re checked for ciation require-ram in ceramic - Committee. L. Dillingham X. Y. sware manufacon for its memtal and public rriff committee. Paul J. Kruesi alumina, and --ctrical, textile, _rs of AlSiMag . processes, with round for close tiose dimensions H. R. Deeth nheline syenite, .ss industry and rare and other E. D. Tillyer 'md equipment. and industrial ific Instrument -.croscopes, pro- Robert Lon8 Mich. t steel at tern* Vol. 28. No. 8 American Ceramic Society--Directory of Corporation Members 299 of 1500*, 1400*, and 1300*F., and cast iron pcf*t^f0r application to stoves, refrigerators, signs, and pj*.,, raachines; also acid-, heat-, and corrosion- ' iron for porcelain enameling purposes. This company also produces a complete line of special-purpose iron and steel and stainless-steel sheets and strip as well as stainless-steel bars and wire. jUnen --c*a" potash 4 Chemical R. M. Curts i22 East 42nd St., Sew York 17, Is*. Y. j, c^rs of potassium chloride, potassium sulfate, salt f*?1borax, Pyrobor--dehydrated borax, boric add, soda ^bromine, U.S.P. bromides, and crude lithium phosa5*1' Borax, boric add, soda ash, and salt cake are Applied in large quantities to the ceramic industry. Armstrong Cork Co. E. C. Emanuel Research Labs., Lancaster, Pa. Producers of glass containers, cork stoppers, metal and molded closures, insulating firebrick, corkboard, pipe covering and other insulating materials. linoleum, asphalt tile and other floor materials; wall coverings, acoustical material, gaskets, seals, and many industrial specialties. Distributors of Foamglas and glass-wool insulation. eric*n jtadiator 4 Standard James S. Goodman ^Lflitary Corp. 1541 South 7th St., Louisville 8, Ky. ykcturers of cast-iron enameled plumbing fixtures; rmine vitreous china plumbing fixtures; all types of robing and heating equipment. ericas Refractories Institute W. J. Westphalen Ashworth, George L,, 4 Bros., Ltd. R. L. Evans Broad St. Works, Hanley, Stoke-on-Trent, England Sole manufacturers of Mason ironstone china, the original ironstone china first patented in 1813. This immensely durable tableware is made in a comprehensive range of well-known imperishable underglaze stock patterns of unique period character. 1872 Railway Exchange Bldg., St. Louis 1, Mo. national organisation of manufacturers of refractories " tooting the interests of manufacturers and consumers of factory materials. Babcock 4 'Wilcox Co. A. M. Kohler 86 Liberty St., New York 6, N\ Y. Manufacturers of special refractories for high-temperature imerican Smelting 4 Refining Co. L. G. Matthews 120 Broadway, New York 5, X. Y. Engaged in the smelting, refining, and marketing of non* ferrous metals, primarily copper, lead, and zinc. In con junction with these activities, producers of antimony oxide, jjauc, cadmium, and selenium, all of which are used as and heavy-load conditions, such as glass-tank superstruc tures, checkers, enameling-furnace piers, and other indus trial furnace applications; also a complete range of insulating firebrick for temperatures from 1600 to 2900 F. and refractory mortars, plastics, and castables, both standard and lightweight. ji* materials in the ceramic industry. Ball Brothers Co. G. A. Bull imerican Stove Co- G. F. Fiske Muneie, lad. 1&41 S. Kingshigbway Blvd., St. Louis 10, Mo. Manufacturers of a general line of glass containers, American Stove Co. manufactures domestic gas ranges; commercial gas cooking equipment; coal, wood, and combination ranges; oil cooking stoves, space heaters, md furnaces. Principal administrative offices are in St. Louis. The company operates factories in St. Louis, Cleveland and Lorain, Ohio, and Indianapolis, Indiana. including Ball-Mason and Ideal fruit jars, at plants in Indiana, Illinois, Oklahoma, and Texas; makers of clos ures for glass containers at Muneie and by Aridor Corpora tion, a subsidiary, in Chicago; zinc tolling mills at Muneie and Greencastle, Ind., to produce the zinc porcelain-lined caps for fruit jars and drawn zinc shells for dry-cell batteries; mechanical rubber goods. American Window Glass Co. A. S. Crandon Farmers Bank Bldg., Pittsburgh 22, Pa. Bartlett-Collins Co. D. C. Hamilton Manufacturers of clear sheet glass in thicknesses from Sapulpa, Okla. 0.033 to 0.250 inch for glazing and scientific and industrial Manufacturers of machine-made table glassware, both purposes; special glass for the photographic industry and blown and pressed; a goodly percentage of this line is the medical profession; colored glasses for sunglasses and tumblers, screen process and band decorated; normal decorative uses; safety glass for the automotive industry. distribution in the entire United States as well as in Cen Amsler Morton Corp. tral apd South American countries. P. M. Offill Chamber of Commerce Bldg., Pittsburgh 19, Pa. Baosch 4 Lomb Optical Co. Murray Scott Complete plants for manufacturing blown, pressed, rolled, dram, polished, wire, laminated, and fiber glass and for Rochester 2, X. Y. Established in 1853 in Rochester, X. Y., this company manufacturing silicates of soda and rock wool; metal manufacturers optical glass, ophthalmic lenses, frames, enameling; producer-gas systems; fuel-oil systems; glass- and mountings, safety glasses, Ray-Ban sunglasses, micro * forming machines. Furnish construction and operating scopes and accessories, binoculars, photographic lenses, personnel. magnifiers, and projectors, and a complete line of optical Anchor Hocking Glass Corp. Lancaster, Ohio W. V. Fisher instruments for military use, education, research, industry, and eyesight correction and conservation. : i > j Ancborglass narrow- and wide-mouth jars, jugs, bottles and tumblers; metal and plastic closures and sealing machines; Fire-King Ovenglass; Jade-ite restaurant and dinnerware; Anr-ite dinnerware; plane, decorated and hand cut table, bteben, hotel, bar and restaurant glassware; industrial ud premium glassware. Bay State Abrasive Products Co. O. S. Buckner Westboro. Mass. Manufacturer of grinding wheels, Bayfiex products, cylinder booing stones, oil stones, mounted wheels und points, terrazzo rubs, refractory products and abrasive specialties. Branch offices and warehouses in Detroit, Arietex Ceramic Corp. George W. Shoemaker Brazil, Ind. Chicago, Cleveland, Pittsburgh. Distributors in all principal cities. Manufacturers of ceramic glazed structural building tile for permanent and sanitary walls in buildings such as hospitals, food plants, etc.; standard size 5 by 12 by 4 aches; two-plant output. Bengal Electric Lamp Works, Ltd. X. C. Sen 126 Mollapara Rd.( Jadavpur, India First of its kind is I&dia, this plant manufactures vacuum, gas-filled, railway, street lighting, carbon-filament, and Armeo Steel Corp. ' F. G. Sutphen glow-discharge lamps under brand names Bengal and Middletown, Ohio Bengal (IS). Other products are glass shells and a.-c. Annco is one of the oldest prime producers of enameling and d.-c. ceiling fans made under the brand name BeKo. (1949) 300 .American Ceramic Society--Directory of Corporation Members Bcnjimin Electric Mfg. Co. Hoyt P. Steele Des Plaines, 111. Makers of porcelain enamel washing machine tubs and Crysteel porcelain enamel table tops. Fabrication and porcelain enameling of Benjamin porcelain enamel steel RLM dome reflectors for incandescent mercury vapor and fluorescent lamps. Bethlehem Steel Corp. W. M. Steinedce Bethlehem, Pa. Producers of intermediate and finished steel products of every type, pig iron, coke and coal chemicals, forgings, iron, steel, and brass castings. Bridges, buildings, tanks, transmission towers, and other fabricated steel construc tion. Shipbuilding and ship repairs. B. G. Corporation Frank T. Fallon Ridgefield, N. J. Manufacturers of spark plugs for aircraft and industrial types of operation; also industrial ceramic specialties, including low-loss alumina bodies. Associated items include thermocouples, spark-plug terminal sleeves, elbows, and spark-plug and ignition harness test sets. Binks Manufacturing Co. E. F. Watts 3136 Carroll Ave., Chicago 12, 111. Manufacturers of a complete line of standard and special spray-finishing equipment for ceramic and organic finishes; automatic spray finishing machines, Dynapredpitor water wash and dry-type spray booths, exhaust and material handling systems. Engineering service and consultation available without obligation. Blue Ridge Glass Corp. J. H. Lewis Kingsport, Tena. Manufacturers of rolled figured and wired lime glass; polished figured and wired glass; Aklo heat-absorbing glass; Securit (tempered) figured glass; special surface treatments: sandblasting, frosting, satinol; special rolled-glass products made to manufacturers' specifica tions. Blythe Colour Works, Ltd. Douglas R. Wildblood Cresswell, Stoke-on-Trent, England Manufacturers of vitreous enamels and colors for iron baths, electric cookers, refrigerators, hollow ware, kitchen utensils, and signs; colors and glazes for pottery, tile, sanitary ware, and glassware; dry .colors for paint, plas tics, rubber, and artists; enamels for badges and jewelry. Bonnot Company .. B. T. Bonnot Canton, Ohio Engineers, designers, and producers of machinery for the ceramic industry, the steel industry, and the chemical industry. This company also specializes in long-wearing dies for clay products manufacture and produces abrasion- resisting alloy irons and other iron alloy castings in its own foundry. Botfield Refractories Co. A. H. Engstrom Swanson and Clymer Sts., Philadelphia 47, Pa. Manufacturers of Adamant firebrick cement, a prepared, air-setting high-temperature bonding mortar; Adahearth, a plastic chrome-ore material for constructing hearths in billet beating and slag-tap boiler furnaces; Adachrome supercement, a chrome-ore base, air-setting bonding mortar. Braun Corporation J. G. Stewart 2260 East 15th St., Los Angeles 21, CaHf. Suppliers of industrial chemicals, scientific apparatus, laboratory chemicals, and equipment. Together with San Francisco house, the Pacific Coast agents for several large manufacturers, including B. F. Drakenfeld & Co., Inc. Brockway Glass Co., Inc. F. B. Hess Brockway, Pa. < Manufacturers of glass containers in both fiiot and amber; a complete line of pharmaceutical, proprietary, and pre scription containers, also beers, whiskeys, foods, toilet, and perfumes; three fully automatic machine plants. Buck Glass Co. R. A. Blun, Fort Ave. and Lawrence St., Baltimore 30, Md. 1 One of the smaller companies which specializes in quality and service and has many "firsts'' in the container induZ try; first deliberately to put alumina in milk-bottle glas$. first to introduce .commercially the square Space-Saver milk bottle; makers of a general line of flint-glass bottles. Buffalo Pottery, Inc. R. E. Gouin 1456 Seneca St., Buffalo 10, N. Y. Manufacturers of plain and decorated vitrified hotel chin-, for institutional uses. Butcher, L. H., Co. 362S E. Olympic Blvd., Los Angeles 23, Calif. Distributors of ceramic materials on the West Coast Cambridge Glass Co. W. L. (W Cambridge, Ohio Manufacturers of a complete line of hand-made blown and pressed glassware of high quality and correct design- stemware, tableware, vases, candelabra, epergnes, and all wanted pieces; lines complete in deep plate etchings rock crystal, gold encrustations, and plain ware; drug! gists', laboratory, and photographers' glassware. *' Carborundum Co. H. C. Martin Niagara Falls, N. Y. Manufacturers of a complete line of abrasives, including grinding wheels, abrasive paper and cloth, grains, and powders under the trade marks Carborundum and Aloxitc superrefractories under a Frax trade mark; resistance and heating elements under the trade mark Globar. Camegie-Illinois Steel Corp. J. C. Eckel 922 Carnegie Bldg., Pittsburgh 30, Pa. Manufacturers of a comprehensive line of steel products, including sheets, tin plate, structural shapes, plates, bars' rails, and special sections in a complete range of chemical compositions; produce a special sheet for the porcelain enameling industry, USS Vitrenamel, and stainless steels. Carr-Lowrey Glass Co. Norman R. Beck Baltimore 3, Md. Manufacturers of flint containers and opal jars, machine, and hand-made, for cosmetics, perfumes, drugs, foods, and chemicals. Case, W. A., & Son Mfg. Co. Willard G. Young Robinson, 111. Manufacturers of a complete line of vitreous china plumb ing fixtures. Central Silica Co. . C. Sawyer Zanesville, Ohio Producers of glass sand, enameling sand and flint, placing sand, and pottery flint. Ceramic Color & Chemical Mfg. Co. W. F. Wenning Box 297, New Brighton, Pa. Manufacturers and distributors of colors, chemicals, and equipment for all branches of the ceramic industry; oxides, screening colors, clays, hits; glazes, stains, decorat ing colors; verifiable colors; decorating supplies; mill- room supplies; refiners and producers of cobalt and cad mium compounds. Champion Spark Plug Co., Frank H. Riddle Ceramic Div. 8525 Butler Ave., Detroit 11, Mich. The Ceramic Division makes the ceramic insulators for the spark plugs which art manufactured and sold by the Champion Spark Plug Co. in its plants in Toledo, Ohio, Windsor, Canada, and Feltham, England. Chattanooga Glass Co. Joe G. Venable Chattanooga 10, Term. . Manufacturers of glass jars, containers for soft drinxs, Vot. 28, No. 8* > < plain, blown, ] products in flic- Chicago Bardw Operators of f( plant for ename iron; machine : is engaged chief Chicago Pottery 1920-5 Manufacturers fixtures consist! and tanks, fou: plants, and insr china specialtit. Chicago Retort 208 Largest indepec producing a cor Missouri and IL' Anti-flux, Super high-temperatur Chicago Vitreous 1407-47 Manufacturers c cast iron; clays new and existing -^dJes representat: McBacel porceh International bal a complete line of Chisholm, Boyd i 610 ? Manufacturers of Claycrait Compar Bo Manufacturers of including ceramic gray, and red fact and operate five 1 Colonial Insulator 973 Manufacturers of forms for dipped : plates. Colombia Fire Bri First Natic Manufacturers of firebrick at plant L Commercial Decal Box Manufacturers an since 1902; overgl and semivitreous w nod enamelware; signs. Commerdalores, Ii 39 Cortl Producers of raw : -35, -48. -100, *yanite of 56 to 58` Companhia Paulist Mineracao Caixa Posts Producers of raw m (1949) foods, toiletsV/ ' oe plants. R. A. Blunt * 30, Md. _:es in qualit -ntainer indi_. .k-bottle glass! -e Space-Sa\ ,t-glass bottle R. E. Goui V. r.ed hotel china. 23, Calif, i West nade blown an' -on-ect ^ergnes, danedsiaglnl J^ plate etchings * .n ware; drug.' jware. K. C. Marti -sives, including th, gTains. an<. -m and Aloxite; ; resistance and Vlobar. J. C. Eckel 30, Pa. : steel products, ?es. plates, bars, ange of chemical nr the porcelain i stainless steels. Norman R. Beck ~.al jars, machinees, drugs, foods, "Villard G. Young tous china plumb- E. C. Sawyer . and flint, placing W. F. Wenning Pa. :rs, chemicals, ana ceramic industry; tes, stains, decorat ing supplies; millof cobale and cad- Frank H. Riddle 1, Mich. . ic insulates for the ; and sold by the ts in Toledo, Ohio, nd. Joe G. Venable i for soft drinks, Vol. 28. No- 8 American Ceramic Society--Directory of Corporation Members 301 plain, blown, lettered and ACL and other proprietaryproducts in flint and green glass. Chicago Hardware Foundry Co. Robert J. Young North Chicago, HJ. Operators of ferrous and nonferTous foundries; enamel plant for enameling in both wet and dry processes on cast iron; machine shop and plating facilities. This company is engaged chiefly in jobbing work. Chicago Pottery Co. . J. S. Clifford 1920-50 Clybouru Ave., Chicago 14, III. Manufacturers of all types of vitreous china plumbing fixtures consisting of all types of lavatories, closet bowls and tanks, fountains, sinks, etc,, for homes, industrial plants, and institutions; also various types of vitreous china specialties. Compania Mexicans de Refr&ctarios, A. P. Green, S. A. Av. Marina Nadonal 200 Bis, Apartado Postal 266, Mexico, D. F., Mexico Manufacturers of faigb-heat duty and superduty firebrick, refractory mortars, plastic refractories, and castables. Comptoir Tnilier da Nord Jean Delecourt 117, Rue Natioaale, Marcq-en-Baroeul (Nord), France Consolidated Feldspar Corp. M. J. McHugh, Jr. 1403 Trenton Trust Bldg., Trenton 8, N. J. * This company mines and grinds feldspar in several states for glass, pottery, porcelain enamel, and other ceramic products; also produces beryl, mica, amblygonite, lepido- lite, and flint. The feldspar is produced by the customary mining and grinding methods and by the flotation process. Chicago Retort & Fire Brick Co. C. S. Reed, Jr. 208 S. La Salle St., Chicago 4, 111. Largest independent refractory manufacturer in Illinois, producing a complete line of fire-clay refractories from Missouri and Illinois clays. Products include Gibraltar, Anti-flux, Superior, Sterling, and Ajax brick, plastics, high-temperature cements, castables, and clays. Chicago Vitreous Enamel Product Co. William Hogenson 1407-47 South 55th Court, Cicero 50, 111. Manufacturers of porcelain enamel frits for steel and cast iron; clays; color oxides. Engineering service on new and existing porcelain enameling plants. Exclusive Jts representatives to the porcelain enamel industry for porcelain grinding balls and mill lining brick, International balls mills, Frantz Ferro Filters. Jobbers of 4 complete line of porcelain enamel shop supplies. Consolidated Glass Works, Ltd. I. Donen Pretoria and Germiston, South Africa Manufacturers of a complete line of glass containers for the food, pharmaceutical, beverage, and liquor trades. Consumers Glass Co., Ltd. J. Brunning Second Ave., VUle St. Pierre, Quebec, Canada Manufacturers of container glass; bottles, jars, tumblers, etc. Coors Porcelain Co. H. W. Ryland Golden, Colo. Manufacturers of chemical and scientific porcelain; cook ing and tableware; pyrometer and combustion tubes, and tubes for other high-temperature uses; electrical insulators with extreme resistance to electrical, mechanical, and thermal demands; special ceramic products. Trade mark Coors U.S.A. Chisholm, Boyd & White Co. B. T. Brennan 610 West 57th St., Chicago 21, 111. Manufacturers of brickmaking machinery. CUycraft Company C. Forrest Tefft Box 866, Columbus 16, Ohio Manufacturers of structural and industrial clay products, including ceramic glazed and unglazed facing tile, buff, pay, and red face brick, add brick, and floor brick; own and operate five large modern plants in Ohio. Colonial Insulator Co. R. W. Hemphill 973 Grant St., Akron 11, Ohio- Manufacturers of spedal electrical porcelain, porcelain forms for dipped rubber goods, and refractory tubes and plates. Columbia Fire Brick Co. M. L. Hamaker First National Bank Bldg., Canton 2, Ohio Manufacturers of Columbia. No. 1 Savage, and Strasburg firebrick at plant in Strasburg, Ohio. Commercial Decal, Inc. Alfred Duhrssen Box 759, East Liverpool, Ohio Manufacturers and suppliers of ceramic decalcomania since 1902; overglaze and underglaze decal for chinaware and semivitreous ware; spedal decalcomania for glassware end enamelware; open-stock patterns and exclusive de- sens. Corhart Refractories Co., Inc. Frederick S. Thompson 1600 W. Lee St.. Louisville 10, Ky. This company manufacturers and sells Electrocast refrac tories. Coming Glass Works J. T. Littleton Coming, N. Y. Manufacturers of consumer and technical glass products, including ovenware, flameware, tumblers and tableware, lighting ware, lamp chimneys, laboratory and pharma ceutical ware, optical glass and color filters, gauge glasses, glass piping, thermometer tubing, signal ware, incandes cent bulb blanks, exhaust tubing, neon tubing, fluorescent lamp tubing, radio insulators and tubes, and other elec trical parts. Coming Glass Works, Charleroi Plant Charleroi, Pa. (See Coming Glass Works, above). E. A. Spencer Crane Co., Chattanooga Div. Chattanooga, Tenn. Manufacturers of a wide range of porcelain enameled iron plumbing fixtures for use in homes, hospitals, schools, office buildings, and industrial plants, including sinks, bathtubs, lavatories, and special fixtures; also a complete line of boilers and radiators for steam and hot-water heating. Commerdalores, Inc. ' Henry S. Doty 39 Certlandt Si.,'New.York7, N. Y. , Producers of raw and calcined kyanite in grain sizes of -35, -48, -100, and -200 mesh. Refractory grade kyanite of 56 to 58% alumina and P.C.E. of 36-37. CoDp&nhia Paulista de Eduardo C. Simonsen Mineracao ' . Cajyq Postal 3008, SSo Paulo, Brazil, S. A. Producers of raw materials for ceramic purposes. Cronin China Co. Minerva, Ohio W. K. Cronin Manufacturers of semiporcelain dinnerware, colored-glaze dinnerware, ovenware, and refrigerator ware. Crooksrilie China. Co. Henry J. Bennett Crooksville, Ohio Producers of a high-grade line of semivitreous dinnerware .since 1902; now producing two complete shapes in Ivory Tone body with many .decorations and treatments, and Gray-lure, a gray glaze embossed and decorated. (1449) * 302 American Ceramic Society--Directory of Corporation Members Crossley Machine Co. WQliam J. Harris Trenton 9, N. J. Manufacturers of a complete line of machinery for the making of general-ware pottery, sanitary pottery, elec trical porcelain, high-tension insulators, crucibles, and floor and wall tile. Crown Potteries Co. J. P. Wendt Evansville 7, Ind. Manufacturers of high-quality semivitreous decorated ware in plain and embossed shapes; decorations follow authentic styling, using overglazed decalcomania; ad vantageously located for the trade in the South, South west, Central, and Central West States. sodium; used as a source of alumina for glass; the manufacture of porcelain enamels, welding rods and grinding wheels. 'a Douglas, John, Co. Krell BosW 71st Street and B. & 0. R.R., Cincinnati 16, Ohio ^ Manufacturers of vitreous china sanitary plumbing ware. Drakenfeid, B. F., & Co., Inc. Scott J. Courts 45--17 Park Place, New York 7, N. Y. 7 Manufacturers of colors and coloring chemicals for tria.. ' dayware, and porcelain enamels; decorating suppU^I grinding and sheening equipment. ' Crunden Martin Mfg. Co. E. A. Schwartz Drtmmens Glassverk Ragnar Tanberv 760 South 2nd St., St. Louis 2, Mo. Drammen, Norway Manufacturers of enameled kitchen utensils, galvanized Producers of 1,600,000 preserving jars and 1,500,000 sq m tubs, pails and cans, rubber fruit-jar rings, and various of window glass a year. Pressed and blown glass. Semi, paper products. automatic machinery for jars and Fourcault machines for Curran, Edward, Engineering, Ltd. D. Ryan window glass. Plant for wire glass production. Cardiff, Wales Builders of furnaces, pickling and washing plants, heavy machinery; makers of enameled ware. Davis Fire Brick Co. Oak Hill. Ohio D. D. Davis Duncan & Miller Glass Co. James E. Duncan Washington, Pa. ' Manufacturers of blown and pressed table glassware- blown tumblers and stemware; etchings; decorated novelties. Manufacturers of a complete line of all grades of fire-clay refractories in all shapes and sizes; also Sharon Brand Du Pont, E. L, de Nemours & H. C. KuchW silica brick manufactured by the hand mold and power Co., Inc. press for open-hearth and electric furnaces, glass tanks, Electrochemicals Dept., Wilmington, Del. copper reverberatory furnaces, and coke ovens. Manufacturers of a complete line of ceramic colors, in- DeMuth Glass Works, Parkersburg H. A. Julian Div. Box 629, Parkersburg, W. Va. Manufacturers of blown and pressed glassware and lamp tubing; also pressed ware to individual specifications. Denison Engineering Co. W. C. Denison, Jr. eluding body stains, glaze stains, overglaze and underglaze colors, oxides for porcelain enamels, acid- and alkali, resistant glass colors for use on glass tableware and con tainers; precious metal decorations. A technically trained service staff is available for assistance in the use of these products. 1160 Dublin Rd., Columbus 16, Ohio Eagle-Picher Co. J. S. Nordyke Manufacturers of oil-hydraulic power equipment; hy 1501 Oliver Bldg., Pittsburgh 22, Pa. draulic presses, car propellers, pushers, including presses Manufacturers of a complete line of lead and zinc products especially designed for ceramic industry as well as the for the ceramic industry: litharge, red lead, lead silicate, Multipress in capacities to 35-ton self-contained units Alsilox, basic carbonate white lead, and zinc oxides. with interchangeable components for high production needs. Denver Sewer Pipe & Clay Co. W. J. Geddes Box 2329, Denver 1, Colo. Established in 1889, manufacturers of vitrified salt-glazed sewer pipe, wall coping and conduit, clay Hue lining and fireproofing blocks, firebrick and special refractories, face brick, stiff-mud common brick, salt-glazed brick and hollow Eastman Kodak Co. Rochester 4, N. Y. Manufacturers of film, photographic plates, papers, chemicals; cameras, projectors, and accessories; mounts and albums; lenses, optical goods, Recordak units; cellu lose acetate yarn and staple, plastics, chemicals; vitamin concentrates, high-vacuum apparatus. building tile, common structural clay tile, and structural Electric Auto-Lite Co., Spark Robert Twells face tile. Plug Div. DeVilbiss Company E. F. Frey Toledo 1, Ohio Engineers and manufacturers of complete spray finishing systems, specially designed for ceramic and porcelain plants, dry and water wash spray booths, automatic and hand-operated spray equipment and accessories, air com pressors, hose and connections. Diamond Alkali Co. . Painesville, Ohio L. T. Welshans Fostoria, Ohio Manufacturers in twenty-eight plants of automotive and aviation equipment principally in the electrical, lighting, control, protection, and ornamentation fields. The Spark Plug Division makes principally automotive and aviation spark plugs, fabricating and assembling all components. The Ceramic Department has six tunnel kilns and four decorating kilns. Canadian spark-plug plant, Sarnia, Ont. Manufacturers of soda ash, caustic soda, bicarbonate of Electro Refractories & Alloys Corp. Grant S. Diamond soda, liquid chlorine, carbon tetrachloride, silica of soda, 344 Delaware Ave., Buffalo 2, N. Y. bichromate of soda, and precipitated calcium carbonates Manufacturers of Electrocarb silicon carbide grain; for paint, rubber, and industrial purposes; specialty cleans Kellogg silicon carbide slabs, posts, setters, muffles and ers for the laundry, dairy, and bottling trades; refractory other special refractories; Tercod melting crudbles; and light-calcined magnesia. special high temperature refractory cements and ramming Dixon, Joseph, Crucible Co. Warren A. Zimmer Jersey City 3, N. J. mixtures; stopperheads for steel ladles; resinoid grinding wheels and additive nonferrous alloys. Producers of graphite products, including crucibles, re torts, ladle stoppers, nozzles and sleeves, special refractory shapes, refractory cements; pencils and pencil leads; graphited paints and lubricants. Dominion Minerals, Inc. Piney River, Va.' V. V. Kelsey English China Clays Sales Corp. D. E. Milne i 551 Fifth Ave., New York 17, N. Y. Importers and distributors of English clays for the pottery - industry. Erie Resistor Corp. Byron B. Minnnio Pioneer miners and refiners of aplite, a rock product con 644 West 12th St., Erie, Pa. . sisting of silicates of aluminum, calcium, potassium, and ' Manufacturers of carbon-composition resistors and tao- Vol. 28. No. 8 1 ilso used in : iods, and Lreil Bosler Ohio viing war. Courtney -s for glass g supplies' 2S Tanberg 0,000 Sq.m -2s. Semimachines for * ! * - Duncan, 3rd . glassware; - decorated . C. Kuchler Del. c colors, in* i underglaze and alkali* ^re and con* --ally trained use of these . S. Nordyke ?a. rise products lead silicate, oxides. -tes, papers, ries; mounts : units; cellucals; vitamin Robert Twells .itomotive and rical, lighting, s. The Spark e and aviation `i components, kilns and four -lant, Sarnia, .nt S. Diamond :. Y. carbide grain; rs, muffles and ting crucibles; s and ramming sinoid grinding D. E. Milne T. Y. . for the pottery . ,-on B. Minnium >ors and radio- Vol. 28. No. 8 American Ceramic Society--Directory of Corporation Members 303 flterference suppressors, mica and ceramic dielectric I*writers. and molded plastic parts; all for use in radar, ^avig^tion, communication, and similar electronic equip ment- vgreka Flint & Spar Co., Inc. Herreld D. Thropp 190 W. State St., Trenton 8, N. J. ' gappliers of Eureka glaze feldspar, Eureka body feldspar, ^oerican sand dint, English Cornwall stone, and placing find. ns Lead Corp. R. M. Evans Box 1467, Charleston 25, W. Va. Manufacturers of all types of red lead and litharge, fritted ggd bisilicate, fritted lead monosilicate, and 300-mesh uad monosilicate. Detailed information on these prod* oCts is available. gjolon Company William A. Harty Tonawanda, N. Y. Manufacturers of silicon carbide (Carbolon) and fused gMsinum oxide (Exolon) abrasives; also silicon carbide god fused aluminum oxide refractories in crude and --ound form, graded to the requirements of the consuming dustries. fabrics de Ladrillos Indus* Salvador Odriozola Gomez triales y Refractarios, S~A. Apartado 390, Monterrey, N:!L., Mexico Manufacturers of fire-clay brick, high heat-duty and silica brick, all standard and special shapes, refractory mortars, Q5t refractories and insulating brick, under the brand oaaies Flir and Silica. fabrics de Porcelana da Vista Alegre Lda. Largo da Biblioteca Publica No. 17, Lisbon, Portugal A 125-year-old manufacturer of fine porcelain art and tableware, now also making porcelain insulators, under brand name VA. Branch firms are Empresa Electroj-ramica, making insulators, and Sodedade de Porcelanas, Ltd., making tableware and low-voltage insulators. Fiirfacts Company, Inc. .. M. P. Mitchell Box 374, Trenton 3, N. J. Manufacturers of a line of china bathroom accessories, consisting of soap holders, toothbrush and tumbler holders, paper holders, towel bars, etc. federal Glass Co. Henry H. Blau 515 E. Innis Ave., Columbus 7, Ohio Producers of glassware for domestic and hospital uses, including tumblers, tableware and kitchenware, stemware, and lighting ware in a variety of shapes, colors, and physi cal characteristics. Federal Seaboard Terra Cotta Corp. O. E. Mathiasen Perth Amboy, N. J. Manufacturers of Enduro-Ashlar architectural terra cotta, swimming pool overflow rims, and ceramic specialties. Factories at Perth Amboy and South Amboy, N. J. Ferro Enamel Corp. R. A. Weaver 4150 East 56th St., Cleveland 5, Ohio Manufacturers of Ferro frits for porcelain enamel finishes an metal products; Ferro color oxides to be used with frits, ud other enameling materials. Designers and installers of porcelain enameling furnaces and plant layouts. The Allied Engineering Division offers the same services in the pottery and dayware fields. Ferro Enamels (AusL) Pty. Ltd. R. M. Mueller 27 Bourke Rd., Alexandria, N.S.W., Australia Enamel Division: Manufacturers of vitreous enamels, color oxides, opacifiers, alkali cleaner, and enamelling ccpupment. Pottery Supplies Division: Manufacturers ri pottery clays, casting slip, glazes, overglazes, stains, etc. Ferro Engineering Co. ' Walter M. Charman 1208 Hanna Bldg., Cleveland 15. Ohio Tais company sells and services the C&D Hot Top and (1949) advises on steel ingot and ingot handling problems. The C&D Hot Top increases yields,* safeguards quality, cuts costs, and systematizes and modernizes operations. FibergUs Ltd. Gshawa, Ontario, Canada Fiberglas is glass in fiber form used as insulating material for all types of electrical, industrial, and construction uses, as well as in original equipment. Findlay Clay Products Co. John L. Leech Washington, Pa. * Manufacturers of vacuum cast tank blocks, refractories, and glassmelting pots usually high in silica; high-alumina refractories including sillimanite; specialists in compli cated and large shapes. Fletcher Enamel Co. J. Carroll Fletcher Dunbar, W. Va. Manufacturers of a complete line of porcelain enameled kitchenware. Foote Mineral Co. H. C. Meyer Eighteen West Chelten Bldg., Philadelphia 44, Pa. Manufacturers of lithium, strontium, and tungsten chemi cals. Processors of beryllium, lithium, manganese, tita nium, and zirconium minerals; also chromite, natural iron oxides, ground glass, and pyrites. Fords Porcelain Works I. A. Hansen Perth Amboy, N. J. Manufacturers in porcelain of kitchen sinks, laundry trays, urinal stalls, bathtubs, and like items; in vitreous china of toilet bowls and tanks, lavatories, and urinal stalls. Foster-Forbes Glass Co. F. R. Motsch Marion, Ind. This company and its predecessor companies since 18 have specialized in the manufacture of quality containers in flint glass only. The major lines are toilets, cosmetics, prescription foods, catsup, liquor, wines, beers, and beverages. Fostoria Glass Co. W. F. Curtis Moundsville, W. Va. Manufacturers of handmade blown and pressed tableware and decorative glassware. Distribution is made through selected retailers in all principal cities and towns. Franklin Glass Corp. A. L. Pasquier Box 150, Butler, Pa. Manufacturers of polished plate glass of largest sizes, bent glass in all sizes, structural and colored plate glass, and ground and polished spectacle glass. Frantz, S. G. Co., Inc. S. G. Frantz 161 Grand St., New York 13, N. Y. Producers of FerroFilter magnetic separators for removing iron particles from slips, glazes, and powdered clays; vibrator types for non-free-fiowing materials. Frazier-Simplex Inc. C. J. Frazier 436 E. Beau St., Washington, Pa. Contracting and consulting engineers to the gla_<s industry offering plantwide service including window, plate, con tainer, tubing and sodium silicate plants; will design, furnish, and erect complete glawnaking operations and modernize existing plants. Simplex lehrs, blanket batch chargers, adjustable shadow walls. French Saxon China Co. W. V. Oliver Sebring, Ohio Manufacturers of dinnerware for home use in three exclu sive shapes and a variety of decorations. Funkhooser Company E. H. Nichols 138 W. Washington St., Hagerstown, Md. Miners and manufacturers of natural slate and stone roof ing granules, treated at high temperatures with fluxing materials, hits, glares, and coloring oxides to produce more intense colors, for use in surfacing composition roofing. 304 American Ceramic Society--Directory of Corporation Members Garco Products, Inc. N. S. Garbisch Box 351. Butler, Pa. Manufacturers of Garspax, an intimate mixture of chemi cally and mechanically processed pulverized silica and glass for use in vitreous and semivitreous ware, and Garsand, a specially formed siliceous product designed for use in all types of glass batches. Garfield Refractories Co. Kenneth A. Rugh Bolivar, Pa. l^nufacturers of Garfield, IXL, and Walbro firebrick; Corstex superduty firebrick; and Balgar 50% alumina and Balgar 60% alumina refractories. Gladding, McBean k Co., Inc. W. 0. Brand. 2901 Los Feliz Blvd., Los Angeles 26, Calif. ' Manufacturers of Franciscan china and earthenwar. Hermosa wall and floor tile, roof tile, face brick, ceramic veneer, sewer pipe, and refractories. Ten plants. c Glen-Gery Shale Brick Corp. Reading, Pa. Gordon E L.j ** Manufacturers of wire-cut face brick and colonial brick in eight plants in eastern Pennsylvania. A wide variety of textures and colors are produced at the rate of 144,000 000 brick a year. The company's slogan is "One Hundred One Million Quick." 0 General Ceramics and Steatite Corp. R. W. Fergusen Keasbey, N. J. Manufacturers of electrical and industrial ceramics, steatite high- and low-tension porcelains, titanates, and ferrites (Ferramic), electrical refractories, solder seal and Sealex bushings. Tool and die shop facilities. Chemical stoneware and porcelain process equipment; pumps, pipe, fittings, towers, and vessels. Facilities for jiggering, casting, extruding, and pressing; research laboratory and service engineering department. Glenshaw Glass Co., Inc. George W. Mev-- Glenshaw. Pa. /cr Manufacturers of glass containers for beer, liquors and wines; packers; preservers; narrow-neck and wide mouth bottles. Globe Brick Co. S. C. Pou^ East Liverpool, Ohio Manufacturers of firebrick, ladle brick, and producers of fire clay. General Color k Chemical Co., Inc. Harry J. Keener Graff-Kittanning Clay Products Co. John G. Fraat? Box 7, Minerva, Ohio .i :-Worthington, Pa. ! Manufacturers of a complete line of colors, -frits, and Manufacturers of vitrified clay pipe, flue lining, wall * chemicals for ceramic processes; consultant engineers. coping, and clay products; owners of the Worthingtoa 1 Ceramics Co., Worthingtoa, Pa., manufacturers of drain General Electric Co., Pitney Glass W. S. Kahlson tile and hollow tile; a member of the Clay Sewer Pip* Works Association. 1133 East 152nd St., Cleveland, Ohio Manufacturers of glass bulbs, clear and inside frosted Grand Enameling Co., Div. of Grand V. J. CichowsH for incandescent lamps and electronic tubes. Other G.E. Industries, Inc. plants at Cleveland, Niles, Bucyrus and Logan, Ohio, 2335 E. 67th St., Cleveland 4, Ohio Bridgeville, Pa., Jackson, Miss., and Lexington, Ky., ' Vitreous enameling of both sheet steel and cast iron manufacture tubing for lamp and tube parts, lumiline and Producers of flatware for stoves and kitchen cabinets fluorescent lamps, glass parts for sealed-beam lamps, incinerator parts, washing machine tubs, sinks, refriger- opaque and clear quartz tubing and cane. ' ator flatware, space beaters, reflectors, transformer building materials such as shingles, siding, etc., and hollow* General Glass Equipment Co. Victor A. Plumbo ware items. Parent company produces Grand gas ranges. 5 S. Virginia Ave., Atlantic City, N. J. Complete glass plant installations for bottles, tableware, Great Lakes Foundry Sand Co. C. L. Cruikshank and window glass. Oil- or gas-fired furnaces; annealing 720 United Artists Bldg., Detroit 26, Mich. and decorating lehrs; automatic lehr loaders and batch chargers; forming and pressing machines; refractory materials; glass fiber drawing machines. Exclusive sales agents for the American Nepheline Cor poration, miners and processors of Lakefield nepheline syenite, used as a flux in pottery or as a source of aluminum General Refractories Co. Russell P. Heuer 1520 Locust St., Philadelphia 2, Pa. Manufacturers of refractories with twenty-three plants oxide in glass and enamel.' Other products include placing sand, fire clay, flint, bentonite, and prepared low-tem perature bodies. operating in ten states; products include fire-clay, silica, magnesite, and chrome brick and acid, neutral, and basic bulk refractories; offices in all large cities. Great Lakes Steel Corp. Conrad W. Given Ecorse, Detroit 18, Mich. A division of the National Steel Corporation, makers of George, W. S., Pottery Co. East Palestine, Ohio W. C. George Michigan Metal, widely used in many products as a base for porcelain enamel. Manufacturers of plain and fancy dinnerware in white, canarytone, and colored glazes; monogram sets with black and blue initials. Plants in East Palestine, Ohio, and Canonsburg, Pa. Green, A. P., Fire Brick Co. R. S. Bradley Research Dept., Mexico, Mo. Manufacturers of a complete line of fire-clay brick, in cluding high alumina, super duty, high heat duty, and Georgia Kaolin Co. Wharton Jackson 433 N. Broad St., Elizabeth'3, N. J. Producers of china clays for the ceramic industry since - intermediate duty; refractory specialties including mor tars, plastics, castables, coatings, and industrial insula tion; also insulating firebrick. 1901 at Dry Branch^ Ga. Pioneer--plastic, high green strength, excellent workability. Velvacast--controlled particle size, fast casting. Both are white-firing clays, available water washed and airfloated. Gillinder Brothers, Inc. J. Fletcher Gillinder Haeger Potteries, Inc. E. H. Haegtr Dundee, 111. Manufacturers of a line of flower bowls, vases, fruit bowls, and figurines; a large number of planter items for florist use; war work equipping barracks and officers'quarters. Port Jervis, N. Y. Manufacturers of all glass forms designed to collect, dis Hall China Co. M. W..Thomp* tribute, direct, refract, reflect, and/or diffuse light from East Liverpool, Ohio . any electrical source; instrument covers; kitchen mixing sets; specialties of crystal, opal, translucent, and colored glassware; during the war, spectrophotometrically con trolled colored glass. Manufacturers of a complete line of plain and decorate teapots, casseroles, bowl sets, and other cooking serving porcelain articles; also a small line of decora semivitreous dinnerware and soda-fountain jars. Vol.28.No-8* mpden Grinding 118 Fisk incorporated in i& Corundum Wheel G facture of grinding * industry. Hancock Brick k T; B< Manufacturers of co Hanley Company Operators of moder and Lewis Run, Pa brick and face tile; quarry tile, floor brie Hanovia Chemical i 1 W. Cent Producers of bright jadium, and silver i luster colore and st 7ica ceramic pretioi purposes and herme Harbison-Walker R 1800 Farmers producers of fire-ch silica, magnesite, cl brick, insulating firi silica clays, special dead-burned grain mortars, ramming m Hardinge Co., Inc. Manufacturers of c mills; tube, rod, t driers; rotary kiln mills; wet classifie: weight feeders; sc diaphragm sludge p ters; circular an< centrifugal clutches Ear for automatic r Harker Pottery Co. E Continuously in bu produces decorated goods at its plant ic Karshaw Chemical < 1945 East Producers and distr branches of the cera Hartford-Empire Co Box 2 Better glassware at company's services plant engineering, g melting furnaces, i annealing lehrs, de devices, and mold e: Haviland, Theodore 26 West 2; Manufacturers and Haws Refractories ( 407 M Manufacturers of fii and silica refractors Hazel-Atlas Glass C Manufacturers of *are, fruit jars and < decorated ware, am (1949) - earthenware brick, ceramic plants. 'Jrdoa E. Lewis :olonial brick in wide variety at " of 144,000.000 ne Hundred to orge W. Meyer -er. liquors, and eck and wide- r 1 S. C. Porter ad producers of John G. Frantz due lining, wall ae Worthington aturers of drain ~.ay Sewer Pipe V. J. Cichowski Ohio and cast iron, ritchen cabinets. , sinks, refrigerransformer cases, etc., and hollow. ' rand gas ranges. 2. L. Cruikshank 26, Mich. Nepheline Cor.^efield nepheline urce of aluminum ts include placing repared iow-tem- Zonrad W. Given ration, makers of roducts as a base R. S. Bradley to. ..-e-clay brick, inz heat duty, and es including morindustrial insula- t E. H. Haeger rases, fruit bowls, =r items for florist officers' quarters. M. W. Thompson Ain and decorated ther cooking .. line of decorated iin jars. Vol. 28, No. 8 American Ceramic Society--Directory of Corporation Members 305 tr.moden Grinding Wheel Co. G- S. Emerson 1^ 118 Fisk Ave., Springfield 7, Mass. corporated in 1886 under the name of the Hampden r/rfuodum Wheel Company; now specialists in the manuj^ure of grinding wheels used largely in the heavy goods industry- u^eock Brick & Tile Co. J. Leo Child ** Box 59, Findlay, Ohio j^aiiufacturers of common brick and drain tile. foaley Company Charles E. Bates Summerville, Pa. /wrators of modem tunnel kiln plants at Summerville Zj<i Lewis Run. Pa., producing buff, gray, and red face btick and face tile; glazed brick and face tile; vitreous quarry *tfe, door brick and acid brick. gsaoria Chemical & Mfg. Co. W. Riehl 1 W. Central Ave., East Newark, N. J. producers of bright and burnished gold, platinum, pal ladium, and silver in liquid, paste, and powder form and luster colors and stains for decorating pottery and glass; a]0 ceramic precious metal coatings for current-carrying purposes and hermetic sealing. gtrbison-Walker Refractories Co. W. F. Rochow 1800 Farmers Bank Bldg., Pittsburgh 22, Pa. Producers of fire-clay, superduty fire-day, high-alumina, silica, magnesite, chrome, and forsterite brick, acidproof brick, insulating firebrick and bulk insulation, fire clays, silica clays, special furnace chrome, furnace magnesite, dead-burned grain magnesite, high-temperature bonding mortars, ramming mixtures, plastic firebrick, and castables. Harding* Co., Inc. Harlowe Hardinge York, Pa. Manufacturers of conical or cylindrical ball or pebble mills; tube, rod, batch, ball, and pebble mills; rotary driers; rotary lrilns; air dassifiers for ball and pebble mills; wet classifiers; agitators; thickeners; constant- weight feeders; scrubbers; rotary tubular conveyors; diaphragm sludge pumps; automatic backwash sand fil ters; circular and rectangular clarifiers; automatic centrifugal dutches; automatic samplers; and Electric Ear for automatic mill-feed control. Eirker Pottery Co. Robert E. Boyce East Liverpool, Ohio Continuously in business since 1840, this company now produces decorated dinnerware, ovenware, and juvenile goods at its plant located at Chester, W. Va. Harshaw Chemical Co. John W. Iliff 1945 East 97th St., Cleveland 6, Ohio Producers and distributors of chemicals and colors for all branches of the ceramic industry. Hsrtford-Empire Co. F. Goodwin Smith Box 1620, Hartford 2, Conn. Better glassware at lower cost is achieved through this company's services and equipment, which include glass plant engineering, glass technology, batch chargers, glass- melting furnaces, feeders, forming machines, stackers, annealing lehrs, decorating lehrs and driers, inspection devices, and mold engineering. Hiviland, Theodore, A Co., Inc. Theodore Haviland II 26 West 23rd St., New York 10, N. Y. Manufacturers and distributors of fine china dinnerware. Haws Refractories Company E. E. Slick, Jr. 407 Main St., Johnstown, Pa. Manufacturers of firebrick, foundry refractories, hot tops, and silica refractories. Hazel-Atlas Glass Co. Francis C. Flint Wheeling, W. Va. Manufacturers of packers', preservers', and druggists' are, fruit jars and caps, jelly glasses, tableware, tumblers, decorated ware, and metal closures. (1949) Heisey, A. H., & Co. T. Clarence Heisey Newark, Ohio Manufacturers of Hand-Wrought Diamoad-H Crystal, hand-blown and hand-cast stemware and tumblers; rock crystal stemware; etched ware, fine table glassware, candlesticks, candelabras and figurines; all-glass cocktail shakers; quality glassware for hotels, restaurants, institu tions; everything for table and home. Higmafl, John W., Co. Robert J. Stone 24 State St., New York 4, N. Y. Importers of English china clays and English ball clays for all branches of-the ceramic and paper industries. Manufacturers of Superundum silicon carbide and Oxalum aluminum oxide for the refractory and abrasive industries; also Hitex grinding cubes and mill-lining blocks. Im porters of Danish fiint grinding pebbles and Belgian and Swedish silex lining blocks. Hommel, O., Co. E. M. Hommel 209 4th Ave., Pittsburgh 30, Pa. Makers of ceramic colors for art pottery, china, and tile; body and glaze stains; colors for glass (add-, alkali-, and sulfide-resisting); liquid bright gold and burnish gold; porcelain enamel frit, coloring oxides and clays; chemicals for glasshouses and potteries; pebble grinding miiu, por celain balls, and brick; aluminum, bronze and other metal powders. Service staff available. Houze, L. J., Convex Glass Co. Armand L. House, Sr. Point Marion, Pa. Manufacturers of micoquiile and coquille goggle lenses and bent blanks; microscopic cover glass; welding glass; flashed sheet glass for X-ray and radar equipment; colored sheet glass for filters and signal equipment; aviation com pass bowls and Mirror blanks; Fresnel lenses; pressedglass specialties; lamp parts; and convex glass shapes. Hofford Machine Works, Inc. J. A. Helget 207 N, Broadway, Redondo Beach, Calif. Manufacturers of hydraulic automatic and manually operated tile presses ranging in size from 10- to 165-ton capacity. Hull, A. ., Pottery Co., Inc. Gerald F. Watts Crooksville, Ohio Producers of nationally advertised art pottery and kitchen ware in the medium- and low-priced field. Ware is avail able for delivery on a 30- to 45-day basis. Humphreys Mfg. Co. W. G. Moore 201 E. Fifth St., Mansfield, Ohio Manufacturers of sanitaryware. Illinois Clay Products Co. Otis L. Jones 214 Barber Bldg., Joliet, 111. Producers of Goose Lake plastic fire clays and firebrick and Therm-O-FIake high-temperature insulation products; specialists in bond clays for foundry requirements. Imperial Glass Corp. C. J. Uhrmatw Bellaire, Ohio Established in 1903, this company manufacturers the nationally famous Handmade Candlewick and Cape Cod crystal tableware; continuous, day-tank, and pot melting; 650 employees; nationwide and export trade. Indiana Glass Co. Charles L. Gaunt Dunkirk, Ind. Makers of a line of machine- and hand-made tableware and lenses, including ruby automobile lenses and spot lights; hand-made tableware, soda fountain, and barware; vaporproof globes, refrigerator trays, and mixing bowls. Specialists in special mould work. Industrial Ceramic Products, Inc. W. E. Cramer 965 W. Fifth Ave., Columbus 12, Ohio Manufacturers of refractory specialties, pin stilts, and cone plaques. Pins are made by a new improved patented process insuring proper contact points. Pins packed in cartons or barrels. , 306 American Ceramic Society--Directory of Corporation Members Industries Reunidas F. Mstartzzo S.A. F. Matarazzo Brazil Export Corp., 50 Broadway, New York 4, N. Y. Manufacturers of semivitreous dinnerware, wall tile, sanitaryware, mosaic paving tile, and anti-add stoneware under the trade mark I.R.F.M. Two factories equipped with tunnel kilns and automatic machinery. Institnt du Verre Bernard Long 34 rue Michel-Ange, Paris (16) France Society devoted to the Glass Industry and having three main activities: research, control, and documentation. The Information Center publishes the review Verves et Refradaires containing original papers and abstracts of French and foreign papers. International Clay Machinery Co. R. H. McElroy 1145 Bolander Ave., Dayton 1, Ohio Manufactures of Vac-Aire pottery pug mills and heavy clay product extrusion machines; laboratory Vac-Aire experimental machines; complete clayworkmg equip ment for brick, tile, and pottery, induding lain cars. Ironton Fire Brick Co. ' E. F. Myers 1112 Graham Building, P. 0. Box 4728, Jacksonville 1, Fla. This company has served the metallurgical, chemical, power plant, coke, and glass industries, as well as a number of. railroads, for more than 32 years with high-quality Kentucky clay refractories; also refractory cements, plastic refractories, and siliceous ramming refractories; general offices, Ironton, Ohio. Jackson Vitrified China Co. Philip R. Distillator Falls Creek, Pa. Manufacturers of dinnerware in sets and open stock for home use, using the trade name Royal Jackson, and hotel and institutional ware under the brand names Jackson and Jactan. Johns-Manville Sales Corp. J. C. Crawford, Jr. 22 East 40th St., New York 16, N. Y. Producers of insulating firebrick, refractory products, insulating blocks, and pipe covering; other insulating1 ma terials for all temperatures and service conditions; build ing materials; packings; friction materials; Transite pipe; fillers, and filter aids. Services of contracting organizations are available to apply insulation. clinical, and pharmaceutical use; laboratory glasswarerods; tubing. Knight Maurice A. M. A. Knight t Box 111, Akron 9. Ohio * * Jr- Manufacturers of acid- and alkali-proof chemical equi^ ment; full line of chemical stooeware items such as piping" valves, towers, and large add jars; functional equipment for specific uses such as add absorbers, gas coolers, and washers, pickling tanks, and complete add plants; ' ako make several types of synthetic resins, paints, and cem^T for corrosive service. Brand names: Knight-Ware Pyrofiex, Permanite, Sealon. Knowles, Edwin M., China Co. J. W. Hepplewhjte Newell, W. Va. Manufacturers of semivitreous dinnerware and cooking ware in four different shapes, both in white and colored glazes and decorated patterns; cooking ware is known as Knowles Utility Ware. Knox Glass Associates, Inc. R. R. Underway Knox, Pa. 000 Suppliers of glass containers in amber and flint g1a<s ^ ^ shes up to and induding gallons; Affiliated manufacturer plants are located at Knox, Marienville, Oil City, Parkers Landing, Sheffield, and Pittsburgh, Pa.; Lincoln, m Jackson, Miss.; Denver, Colo.; and Palestine, Tex. ' ' Knox Glass Bottle Co. Knox, Pa. R. Webb Manufacturers of a general line of glass containers in the Knox organization. Kohler Company Carl J. Kohler Kohler, Wis. Manufacturers of cast-iron plumbing ware, vitreous r-hin^ plumbing ware, closet seats, brass plumbing fittings, and electric generating sets. Kolene Corporation .J. H. Shoemaker 3105 E. Grand Blvd., Room 217, Detroit 2, Mich. Suppliers of a process for preparing ferrous metals for applying ceramic coatings; one process for rolled stock, another for scaled, rusted, or cast stock; fewer operations and less space are required than for conventional deaning operations. Jones Metal Products Co. Frank E. Jones West Lafayette, Ohio Manufacturers of porcelain on steel enameled hospital and surgical ware and industrial lighting reflectors and ' flood lights. Kopp Glass, Inc. C. E. Leberknight Box 8255, Swissvale, Pittsburgh 18, Pa. Producers of hand-pressed and blown ware to customer specifications; glass for railroad, traffic, and military signaling devices; heat-resisting and colored glassware for floodlighting and airplane and airport equipment; Jova Brick Works Roseton, N. Y. J. L. Jova visible absorbing ultraviolet and infrared transmitting glasses; special items for stage and display lighting. Producers of common brick. Koppers Co., Inc., Research Dept Karl D. Ulmer Kentucky Clay Mining Co. W. J. Watkins Mayfield, Ky. Suppliers for the past 30 years of ball clays, sagger clays, and wad clays to leading plants in the United States, Panarfa and Mexico; ceramic engineer available for con sultation. Koppers Bldg., Pittsburgh 19, Pa. Designers, builders, and operators of by product-coke, gas, chemical, iron, and steel plants; producers of pig iron, coke, coal chemicals, including tar products and numerous derivatives; plastics; wood preservative; poles, ties, other timber products; heavy machine-work; piston rings; airplane propellers. Kentucky-Tennessee Clay Co., Inc. R. C. Meeker 807 City Savings Bldg., Alliance, Ohio Miners and shippers of ball, sagger, wad, enamel, and plastic fire clays; -numerous grades are produced from mines in West Kentucky, West Tennessee, and Mississippi; available in lump, disintegrated, and air-floated form. Kraftile Company C. W. Kraft Niles, Calif. Manufacturers of structural day products and add brick; largest producers of glazed structural wall units in the West; headquarters for add-proof floor and tank instal lations engineered to fit the job; distributors of special Kimble Glass Division, Owens- H. R. Black construction producU Illinois Glass Co. 2626 Dorr St., Toledo, Ohio Ky&nite Mining Corp. Cullen, Va. Gene Dixon Kimble Glass Division, Owens- Kenneth M. Henry Producers, for general sale, of kyanite and mullite in --35, nimnic Glass Co. --48, --100, and --200-mesh grain sizes. Kyanite ,i Vineland, N. J. recovered by flotation from quartz-kyanite schists. Manufacturers of glass containers for chemical dairy. Mullite is produced by calcination of the raw kyanite. Vol. 28, No. 8 j^boratorio Ap. t -clede-Chi 1711 pounded in fire-clay ref gl3ss bouse spedalties, i Lapp Insula' Manufactur transmission complete as ceramics an tended appl Latchford M Box 47C Manufacture from 4-oz. i green, and a L&ughlin, H Manufacture ware in colo ware; *gS\ dinnerware i Lee Clay Pr< Manufacture also firebric day for the clay for fire! Libbey-Owe One of the x duding The: glass, Tuf-fl absorbing, t safety glasse Locke, Inc. Manufacture trical, them power insul radio and el' insulators; < linings; spec Logan Clay 1 Manufacture products. Louisville FL 4Sc Manufacture famous Cart located at L Ky. Louthan Mfj Manufacture etlain as foil appliance po: parts; zircc setters. Mansfield S Manufacture brass plumbi (1949) Jr. -quip, wiping. ;?meat fs, and - also ^eau '""are. iewhite cooking -olored Oftu as irwood in all ituriaj? Parke-s -a. III.: - Webb i in the Kohler as china -gs, and >emaker -ich. tals for i stock, orations cleaning erknight -astomer military -asswaxe Jpment; .smitting D. Ulmer :ct-coke, pig iron, .amerous :es, other an rings; W. Kraft rid brick; is in the k instal er" special ae Dixon ^ in --35, yanite is schists, yanite. 28. Ko. 8 American Ceramic Society--Directory of Corporation Members 307 T,boritorio Quimico National Jorge Ancizar-Sordo Maryland Glass Corp. L. C. Roche ** Ministerio de Minas y Petroleos 2147-53 Wicomico St., Baltimore 30, Md. Apartado 25/ /, Bogoti, Colombia, S. A. Manufacturers of blue and flint-glass containers for the perfume, pharmaceutical, and food-packing industries; udede-Christy Co. W. W. Shipley all operations are fully automatic. ** 1711 Ambassador Building, St. Louis 1, Mo. pounded in 1844, manufacturers of a complete line of Mason City Brick & Tile Co. C. F. Garland fire-clay refractories, including firebrick, special' shapes, Mason City, Iowa eiass house refractories, arch and wall tile, refractory Manufacturers of structural clay tile, including smooth ^dallies, and vitrified clay products. and textured face tile, backup, partition, and floor tile; radial chimney brick; common brick; face brick; 4- by t .00 insulator Co., Inc. K. E. Stettioius 12-inch drain tile; silo block and staves, and mortar mix. 1 Le Roy, N. Y. Manufacturers of Lapp vitreous porcelains for power Maxson, Elwyn L. Elwyn L. Maxson transmission, radio, electronic, and chemical industries; 1208 Isabel Street, Burbank, Calif. c0mplete associated assemblies; feldspathic and steatite Distributors of pottery clays; ceramic colors; slabs, setters, comics and others especially compounded for the in and saggers; standard pyrometric cones; Frantz Ferro- tended application. Filters; Lakefield nepheline syenite. j^tebford Marble Glass Co. W. R. Bennett Box 4707, Florence Branch, Los Angeles 1, Calif. Manufacturers of glass jars and bottles for all purposes from 4-oz. to gallon capacity, inclusive; made in flint, pn, and amber colors.. Lanahlin, Homer, China Co. Joseph Wells Newell, W. Va. Manufacturers of Fiesta, Harlequin, Jubilee, and Riviera jrare in colored glazes; decorated Kitchen Kraft cooking ware; eggshell semivitreous chinaware in the regular dionerware lines. l>e Clay Products Co., Inc. Martin S. Bowne Clearfield, Ky. Manufacturers of the usual line of sewer-pipe products; 2lso firebrick and drain tile. Shippers of high-alumina ciay for the manufacture of aluminum sulfate and flint day for firebrick. Libbey-Owens-Ford Glass Co. George B. Watkins 1701 East Broadway, Toledo, Ohio One of the world's largest manufacturers of fiat glass, in* duding Thermopane insulating glass, Vitrolite structural giass, Tuf-fiex or tempered glass, plate, window, heat- absorbing, bullet-resisting, and automobile and aircraft safety glasses. Locke, Inc. E. M. Skipper Box 57, Baltimore 3, Md. Manufacturers and distributors of "clayramics" for elec trical, thermal, mechanical, and chemical applications; power insulators, hardware, and associated materials; radio and electronic insulators; telephone and telegraph insulators; chemical porcelain and pipe; mill balls and linings; special ``clayramic" bodies and designs. Logan Clay Products Co.. E. K. Sheffield Logan. Ohio Manufacturers of clay sewer pipe, flue lining, and kindred products. Louisville Fire Brick Works, Inc. E. W. Ernst 4554 Louisville Ave., Louisville 9, Ky. Manufacturers of a complete line of refractories using the famous Carter County, Ky., clays; producing plants located at Louisville, Ky., and Grahn, Carter County, Ky. Louthan Mfg. Co. C. W. Gerster East Liverpool, Ohio Manufacturers of steatite, refractory, and electrical por celain as follows: gas backwalls and radiants; electrical- appliance porcelain, steatite resistor tubes, steatite pressed pans; zircon porcelain; pins, stilts, firing racks, and setters. Mansfield Sanitary Pottery, Inc. P. E. Draper Perrysville, Ohio Manufacturers of Mansfield quality vitreous ehina and brass plumbing fixtures. McCoy, Nelson, Pottery Co. Nelson McCoy Melick Roseville, Ohio Manufacturers of popular-priced art pottery consisting of vases, jardinieres, and flowerpots; several items of under- glaze decoration. Also utility items such as cookie Jars, pitchers, bean pots, pet feeders, teapots, and sugars and creamers. McHose, L. H., Inc. M. M. McHose Box 47, Perth Amboy, N. J. For more than 100 years L. H. McHose, Inc. and the Such Clay Co. have produced crude, terra cotta, fire and sagger clays; special sagger mixture for high and low temperatures; pulverizing plant, laboratory service, and engineering department. McKee Glass Co. Gerald Terrill Jeannette, Pa. Manufacturers of heat-resisting Glasbake, ovenware. Range-tec top-of-stove ware, Lumakee crystal and opal table and kitchenware and industrial ware. Machine and hand fabricating, decorating and special finishing facilities for standard and special mold work. McLain Fire Brick Co. W. A. Turner 1239 Gulf Bldg., Pittsburgh 19, Pa. Manufacturers of quality refractories. Specialists in pour ing-pit refractories, including Dando dry-press and Cham pion wire-cut ladle brick, McLain refractory hot top sleeves, nozzles, runners, refractory ingot-mold plugs, and fire clay. Metal ft Thermit Corporation.' George C. Betz 120 Broadway, New York 5, N. Y. Manufacturers of a complete line of ceramic opadfiers, including sodium antimonate, antimony oxide, and zircon for enamels and tin oxide and Ultrox zirconium opadfier for use in ceramic glazes; laboratory staff available for consultation in the use of opacifiers. Metalloy Corporation Walter M. Fenton 2560 Rand Tower, Minneapolis 2, Minn. Specialists in lithium compounds. Several of these lithium compounds have been developed expressly for ceramic use, particularly in the field of low-temperature enamels and glazes. Such compounds as lithium manganite, cobaltite, silicate, and titanate were introduced by this company. Mexico Refractories Co. C. A. Smith Mexico, Mo. Producers of a complete line of high-quality Missouri re fractories: high-alumina, superduty, high heat-duty, and intermediate heat-duty firebrick; insulating firebrick; high-temperature bonding mortars, cements, castables, and coating materials; plastic firebrick; insulating fire brick cements; silica-base and chrome-base cements. Mississippi Glass Co. R. D. Humphreys 200 Fifth Ave., New York 10, N. Y. Manufacturers of plain arid wired configurated and corru gated glass, and heat-absorbing glass. Brand names are Mississippi. Misco, and Protex. <1949) * ! 308 American Ceramic Society--Directory of Corporation Members Holer Products, Ltd., Hythe Works Colchester, Essex, England Manufacturers of a range of heat insulating bricks, slabs, aggregates and powders, suitable for temperatures up to 1350C. Comprising Fosalsil, Diatoxnite products, Medial insulating refractories, and Super H. T. Moore KnnmHing and Mfg. Co. Walter B. Moore West Lafayette, Ohio Producers of Bettsy Ann porcelain enameled utensils. Hydraulically extruded, bottoms are several times heavier than sidewalls, and are left bare for high conductivity. Features of this line are covered by patents. Moore A-Manger Murray Rushxnore 33 Rector St., New York 6, N. Y. Since 1892 importers of china clay from Cornwall, Eng land, and ball clay from pits in Devonshire, produced largely by the same families. Morton Pottery Co. William Rapp Morton, 331. Manufacturers of art pottery and decorative specialties. Mosaic Tile Co. R. E. Jordan Zanesville, Ohio Manufacturers of ceramic wall and floor tile for all archi tectural and decorative purposes. Line comprised of glared wall tile, unglazed ceramic mosaics, Granitex, and faience. Mount Clemens Pottery Co. Charles E. Doll Mount Clemens, Mich. Dinner-ware manufacturers. Mullite Refractories Co. Charles W. Fyfe Shelton, Conn. Manufacture superrefractories, special shapes, standard brick and cements of calcined kyanite, used by steel, glass, and allied industries where high softening point, good spalling resistance, and strength under load are required. Sold under trade name Shamva. National Ceramic Company J. A. Schermerhom 500 Southard St., Trenton 2, N. J. Manufacturers of steatite insulation, electrical porcelain, and small bathroom fixtures. National Engineering Co. E. A. Peterson 549 W. "Washington Blvd., Chicago 6, 111. Manufacturers of the Simpson intensive mixer and auxil iary equipment. The Simpson mixer is a muiler-type mix ing device and is widely used in dry- and wet-mixing proc esses in every branch of the ceramic industry, particularly electrical porcelain, tile, pottery, and refractories. National Fireproofing Corp. R. A. Shipley 202 E. Ohio St., Pittsburgh 12, Pa. Manufacturers of ceramic, salt, and unglazed fadng tile, partitions, loadbearing wall, floor and back-up tile, flue lining, silo, bin and drain tile, underdrain blocks, sewer pipe, chimney blocks, face and common brick, flat arch and wide center floor tile, column and girder covering, day conduit, raggle block, and Alter tile. Also chemical tank tile and stove liners. National Industrial Sand Assn. V. P. Ahearn 1325 E Street, N. W., Washington 4, D. C. A national assodation of the producers of sand for indus trial purposes. National Lead Company Alexander Stewart 111 Broadway, New York 6, N. Y. Producers of a full line of lead products for the ceramic industry; litharge, red lead, white lead, and lead silicate frits (monosilicate and bisilicate) for glass, raw glazes, and glaze and enamel frits. $ National Lime and Stone Co. L. G. Love First National Bldg., Findlay, Ohio Large producers at Carey, Ohio, of higb-quality burned dolomitic lime and raw dolomite for glass manufacturing and dolomitic hydrated lime for neutralizing acid waste/ Plants located on three railroads which provide excellent shipping facilities. National Mortar A Supply Company E. P. Kearim 1807 First National Bank Bldg., Pittsburgh 22, Pa. Manufacturers, producers, and suppliers of dolomitic Htne and limestone products to the industrial, construction, and agricultural fields. Specialists in a low-iron-content flm. ing lime for the glassmalring industry. National Refractories Co., toe. R. A. Hitchin* 225 S. Fifteenth St., Philadelphia 2, Pa. Manufacturers of fire-clay brick and specialty refractory products at a subsidiary, the Big Savage Refractories Corp., Frostburg, Md., and silica brick at Van Dyke, pa Sales agents for products of the Mexico Refractories' Co and other brick manufacturers. National Research Corp. Philip Godley 70 Memorial Drive, Cambridge, 42, Mass. Industrial research specialists; makers of high-vacuum equipmen. National Sales Corp. Frank irv-v 31-35 E. Thirteenth St., Cincinnati 10, Ohio Manufacturers of filter press cloths for the ceramic and chemical industry; importers of french flint grindin? pebbles; distributors of pulverized and lump Georgia kaolin, quartzite' grinding cubes and mill liners, and bentonite. National Sanitary Co., Division of Erwin Sohn Eljer Co. Salem, Ohio Producers of enameled cast-iron plumbing fixtures and brass goods. Newbold General Refractories, Ltd. 26-30 Clarence St., Sydney, N.S.W., Australia Chief products:, silica, high alumina, kyanite, silicon carbide, chrome, magnesite, insulation refractories and cements; also assay ware and graphite crucibles. Works at Waratah, Port Kembla, Thlrroul and Coniston, NewSouth Wales, Australia. New Castle Refractories Co. R. W. Rowland New Castle, Pa. Manufacturers is six plants of a complete line of kiln furniture including saggers, tile setters, slabs, dish setters, etc.; hot tops, fire brick, insulating brick for industrial furnaces, and special refractories of silicon carbide, silli- znanite, and mullite. New Jersey Porcelain Co., toe. J. M. Gilfiilan New York Ave. and Plum St., Trenton 5, N. J. Established in 1920, this company manufactures electrical porcelain specialties and bathroom accessories under the brand names Monarch and Champion in a modem plant with two oil-burning tunnel kilns.- Niles Fire Bnck Co. J. R. T. Clingan 165 E. Park Ave., Niles, Ohio Established in 1872, this company silica brick from quartz, silica conglomerate and silica cements; high-heat duty fire-clay brick from Pennsylvania and Kentucky clays, and ground fire clays; blast furnace and stove linings. North American Refractories Co. - E. M. Wemfurtner National City Bank Bldg., Cleveland 14, Ohio Manufacturers of all types of fire-clay and silica refrac tories, including high-alumina and instating firebrick; also a complete series of mortars, plastics, ramming mixes, castable refractories, and raw and calcined fire clay and ganister rock. North Carolina Feldspar Corp. W. F. Deneea Erwin, Term. Miners and grinders of feldspar for the ceramic industry either of the high-potash or the high-soda variety in any desired mesh;, also serve glass plants with any mesh or quality, including dotation feldspar. Vol. 28, No. S % Northwestern Gli Manufacturers of and amber purposes; two fur Northwestern Te: 1750 Wr Manufacturers of Norton Company Producers of gri manufacturers of bottle labeling r jpedal refractorie tory laboratory w processes involvir Ohio Brass Co. Manufacturers of voltage transituss stations; porcelair for electrical app sul&tors for militz Ohio Clay Co. Bo: Manufacturers of < Ohio Hydrate A S producers of dolor g. by 30-mesh, hydrate and super by 30-mesh, 16- t carbonate. Old Hickory Clay< Miners and shipper and plastic fire cL form according to Ky. Onondaga Pottery 1858 W.l Manufacturers of i nonabsorbent ware in decorated, plain- Orefraction, toe. 7425 The Manufacturers of ramie and electrica mesh, and 400 me* in granular and m*Vof Orfrax refractory mortars and casting Orton, Edward, Jr., Foundation 1445 Sin A testamentary tru cones in large and Excess income from laboratories of the I the benefit of the in Owens-Coming Fib- Manufacturers of | mineral wool, filter for thermal and act trical insulation, p ?vice fabrics. He m Newark, Ohio; A s^City, Kans.; Sai ark, Ohio, and Ashtc 0949) American Ceramic Society--Directory of Corporation Members 309 rihireftera Glass Company Edward S. Campbell 5S01 E. Marginal Way, Seattle 4, Wash, gfartujtis of a complete line of jars and bottles in jr t and amber glass for foods, beverages, and general j*pcses; two furnaces. ^-rthirestern Terra Cotta Co. Burnette Purcell 1750 Wrightwood Ave., Chicago 14, 111. jjaoofacturers of architectural terra cotta. yorton Company 0. J. Whittemore, Jr. Worcester 6, Mass. p-jducffS of grinding wheels and abrasive products; iVflofacturers of precision grinding and lapping machines, labeling machines, ceramic surface plates, and Vpjjal refractories for use at high temperatures; refrac- Zfflaboratory ware and porous media for commercial involving aeration and filtration. Ofcjo Brass Co. v Barberton; Ohio J. J. Taylor vjanuiactuiers of wet-ware porcelain insulators for bigh- transmission lines, distribution lines, and sub stations ; porcelain entrance bushings and switch insulators {or electrical apparatus; radio and communication in fers for military use. flhio Clav Co. George W. Denison Box 1776, Cleveland 5, Ohio Manufacturers of common and facing brick. Ohio Hydrate At Supply Co. A. H. Nieman Woodville, Ohio producers of dolomitic lime in the following forms: lump, g_ by 30-mesh, 15-mesh, dust ground burnt regular hydrate and superfine hydrate; kiln dried dolomite, 10- by 30-mesh, 16- by 120-mesh, filler dust, and 300-mesh carbonate. Old Hickory Clay Company L. F. Powell Box 271, Paducah, Ky. Miners and shippers of high-quality Kentucky ball, sagger, and plastic fire clays furnished in crude and air-floated fonn according to specifications. Mines near Mayfield, Ky. Onondaga Pottery Co. R. H. Pass 1858 W. Fayette St., Syracuse 4, N. Y. Manufacturers of Syracuse china, a thoroughly vitrified, nonabsorbent ware used in public eating places and homes, in decorated, plain-tinted, and white. Orefraction, Inc. John F. Hunt 7425 Thomas Blvd., Pittsburgh 8, Pa. Manufacturers of three grades of zircon, technical, ce ramic and electrical, produced in granular, 140 mesh, 200 mesh, and 400 mesh sizes; alloy and welding rod rutile m granular and miller forms, and ceramic rutiles. Makers of Orfrax refractory washes, Orelectric cements, refractory mortars and casting slips. Purity grinding. Orton, Edward, Jr., Ceramic J. L. Carruthers Foundation 1445 Summit St., Columbis 1, Ohio A testamentary trust manufacturing standard pyrometric cones in large and small sues from cone 022 to cone 42. Excess income from cone sales is used for research in the laboratories of the Foundation and in various schools for the benefit of the industry, Ovens-Corning Fiberglas Corp. A. C. Siefert Newark, Ohio Manufacturers of glass in fiber or filament form (glass mineral wool, filter and mat products, and glass textiles) for thermal and acoustical insulation, air filtration, elec trical insulation, plastics reinforcement, and industrial *rvice fabrics. Home office in Toledo, Ohio; factories o Newark, Ohio; Ashton, R. I.; Huntingdon, Pa.; Kan- City, Kans.; Santa Clara, Calif. Laboratories in New- ttk, Ohio, and Ashton, R. I. (1949) Owens-Illinois Glass Co. W. A. Mahaffy 601 36th Ave., Oakland 1, Calif. Manufacturers of a complete line of glass containers. Owens-Illinois Glass Co. E. W. Summers General Engineering Dept., Alton, 111. Makers of Duraglas containers, wide and narrow mouth, for food products, pharmaceuticals, prescriptions, chemi cals, proprietary items, milk, cosmetics, beverages, wine, and liquor; tumblers and crystal; structural block; Hemingray insulators; corrugated'fiber containers; wood cases; metal and plastic closures; molded products. Pacific Clay Products Roy Lacy Box 145, Station A, Los Angeles 31, Calif. Manufacturers of glazed floor and wall tile, sewer pipe, firebrick, fire clay, drain tile, stoneware, electrical conduit, ceramicweld clay pipe, hollow building tile, quarry tile, flue lining, chimney pipe, architectural terra cotta, and ceramic veneers. Pacific Coast Borax Co. M. H. Pickard ' 51 Madison Ave., New York 10, N. Y. Manufacturers and distributors of borax, boric acid, anhydrous borax, boric anhydride (anhydrous boric add), sodium borate ore concentrates (anhydrous rasorite and rasorite spedal concentrates) for the glass and ceramic industries. Bulletins and technical service offered. Paden City Pottery Co. Merrill C. Sondles Paden City, West Virginia Manufacturers of three lines of semivitreous dinnerware in sets and open stock: (1) Shenandoah Ware, underglaze decalcomania in brilliant, colorful floral decorations and four solid colored glazes; (2)Tu-tone ware, wide underglaze ivory shoulder and plain ivory, with gold lines, stamps, and floral border decalcomania; and (3) Trend Ware, square shape in solid colored glazes and floral decorations. . Page-Madden Co., Inc. Jesse F. Madden 76-96 Second St., Mineola, N. Y. Manufacturers of whitewares, with fadliHx for dry-press ing, extruding, and casting. Superior porcelain, enamel guides, glass rods and syphons, glass pitons and dents; other supplies for the textile trade. Paper Makers Importing Co., Inc. Charles Brian Room 504, Drake Bldg., Easton. Pa. For 60 years im porters of fine English china and ball clays. Pass & Seymour, Inc. R. H. Pass Solvay Station, Syracuse 9, X. Y. Since 1890, manufacturers of electrical wiring devices consisting of switches, lamp sockets, power outlets, etc.; also of porcelain electrical fixtures and special electrical products made to customer needs; during the war de veloped and produced new types of land mines and fuses for the Ordnance Department; also produced for the Navy special electrical fittings for warships. Pearson, E. J. As J., Ltd. C. W. Thomas Stourbridge, England Established in 1860 to manufacture fire-clay, silicious, and high-alumina refractories of every description for all types of industrial furnaces, by the casting, dry-press, stiff- plastic, pneumatic, and hand-molding processes. Five associated companies. Pernco Corporation Richard Turk 5601 Eastern Ave., Baltimore 24, Md. Manufacturers of porcelain enamel frits and clays; ce ramic glaze frits; colors for enamels, glazes, glass, plastics, and paints; spedal chemicals for the industry; plant and laboratory layout and engineering service on request. Pennsylvania Pulverizing Co. William J. Woods Box 587, Lewistown, Pa. Producers of flint which over the past forty years has become the standard of quality for American ceramic industries; plants located at Mapleton, Pa., Hancock, W. Va., and Newport, N. J. Pennsylvania Salt Mfg. Co. R. S. Roeller . 1000 Widener Bldg.,'Philadelphia 7, Pa. Manufacturers of adds, pickling agents, add and alkaline 310 American Ceramic Society--Directory of Corporation Members cleaners, aluminum hydrate, calcined alumina, and Kryolith (from natural Greenland cryolite ore) for use in the ceramic industry. Pettinos, George F., Inc. George F. Pectinos, Sr. 1206 Locust St., Philadelphia 7, Pa. Pioneers in mining, importing, and refining of graphite; miners and producers of foundry sands, glass sands, indus trial sands, filter and sandblast sands; foundry supplies; high-temperature cements and insulating cements; pul verized and crude clay; massive quartzite. Plants at Millville, Manumuskin, Grenloch, Mt. Holley, Williams- town Jet., and Penbryn, N. J., and Honey Brook and Spring City, Pa. Pfaudler Co. S. W. McCann 1000 West Ave., Rochester 3, N. Y. Engineers and fabricators of corrosion-resistant process equipment, consisting of glass-lined steel, stainless steels, and other metal alloys, including clad materials. Phoenix Brick Yard ' A. R. Campbell 1814 South Seventh Ave., Phoenix, Ariz. Manufacturers of common and face- brick, structural tile, and roof tile. All ware burned in a continuous tunnel kiln except common brick, which are burned in field kilns. Distributors in Arizona for Los Angeles Clay Products Co. and Kraftile Co. Pierce Glass Company J. G. Bozzo Port Allegany, Pa. Manufacturers of glass containers for the food and drug trade, chemical and household products, and cosmetics and toiletries. Pittsburgh Corning Corp. Walter D. Ford Port Allegany, Pa. Manufacturers of structural PC glass blocks of three basic iu fourteen different patterns. Also manufacturers of PC Foamglas, a purely inorganic, permanent, multi cellular quality glass insulating material. Pittsburgh Plate Glass Co. C. E. Fulton Creighton, Pa. Manufacturers and distributors of plate, window, and structural glass; a full line of paints and varnishes; heavy chemicals including soda ash, caustic soda, and chlorine; paint and industrial brushes; plastics, including the Selection series of polyester resins and CR-39 Allymer. Pittsburgh Plate Glass Co., R. W. Miller Columbia Chemical Div. Barberton, Ohio Producers of Columbia soda ash, made to the most exact ing standards, which is especially suitable for the prepara tion of frit; also alkalis; service to customers through offices in principal cities and distributors in every market area. Polynesian Arts Hugh H. Gantt Mayfield, Ky. Manufacturers of unusual art pottery and fine chinaware. Porcelain Metals Corp. P. B. McBride Louisville 10, Ky. Manufacturers of porcelain enameled stampings, metal parts, and shapes to order; deep drawn, formed, rolled or stamped to close tolerances; fabricated and welded as semblies; design, engineering, tooling service; other specified finishes and stainless.steel shapes. Porcelain Products, Inc. John G. Loy Box 300, Findlay, Ohio Manufacturers of a complete line of electrical porcelain insulators ranging from the smaller types for low-voltage house wiring to high-voltage insulators for power transmis sion ; also a limited line of porcelain wiring devices. Posey Iron Works, Inc. f Frank A. Fix Lancaster, Pa. Manufacturers of Lancaster counter-current rapid batch mixers and the Arnold-Creager and Martin line of bri i making machinery; plate and pipe work; refining eon' ment, asphalt plants, rotary Joins and driers, furnaj^ industrial waste treatment plants and concrete feZ?Fabricating, foundry, and machine-shop facilities. wna*' Potters Supply Co. William W. in*- ` East Liverpool, Ohio 111 Manufacturers of kiln room supplies. Products: port pins, stilts, spurs, and thimbles. Distributors of domes?* whiting, bitstone, modeling clay. 65115 Precision Grinding Wheel Co., Inc. Roland T ci-, L 8301 Torresdale Ave., Philadelphia 36, Pa. * Established in 1920 to manufacture a complete liae vitrified and organic bonded abrasive products, of out standing quality of performance, such as high-sp^J snagging wheels, and "cavity clearance'' wheels tungsten carbide tools. 01 Promat Division, Poor & Co. A. E. Chest- 851 S. Market St., Waukegan, 111. ^ Ceramic and electrometallurgical research. Puerto Rico Clay Products Corp. David S. Raaun- Box 2672, San Juan, Puerto Rico Manufacturers of vitreous china sanitary ware, wall tile, face brick, and structural clay tile. 61 Purinton Pottery Co. B. S. Purinton Shippenville, Pa. , Free-brush decorations on tableware, containers for pack, ing, and miscellaneous items. Pyro Refractories Co. 0. E. Millet Oak Hill, Ohio Organized in 1909, this company manufactures standard refractories, special shapes, and refractory specialties coo- sisting of Ohio select first-quality brick of Stiotoville Biot and second-quality brick of Lower Kittanning day; also cements, castables, plastics, and ladle-lining material. Ramtite Company Louis J. Jacobs 2563 West 18th St., Chicago 8, 111. Manufacturers of Ramtite plastic refractory, Fiacto-crete castable refractory, and Esso Bond high-temperature bonding mortar; engineering and construction depart ments design and erect solid and suspended-type walls and arches and economy boiler baffles. Remmey, Richard C., Son Co. G. Bickley Remmey Hedley St. and Delaware River, Philadelphia 37, Pa. Manufacturers of fire-clay, silicon carbide, semisilicon carbide, mullite (clay bonded), Crystalite (recrystallized mullite), alumina (clay bonded), and alumina (99% plus) refractories; plastic firebrick; high-temperature cement; fire clay; alumina oxide cement; and silicon carbide cement. Republic Stamping & Enameling Co. P. A. Malians Box 471, Canton 1, Ohio Manufacturers of porcelain enameled kitchenware. Republic Steel Corp. Burton Loogwel) 1424 Republic Bldg., Cleveland 1, Ohio Manufacturers of iron and steel products. Of particular interest to the ceramic industry are the following products: fiat-rolled products including Toncan iron enameling sheets; alloy and stainless steels; bolts, nuts, and rivets; tubular products, and pig iron. Riddell, W. A., Corp., American W. H. Merkel Clay Machinery Division Bucynis, Ohio Manufacturers of a complete line of clay machinery to produce brick or tile and other clay products, either under the stiffmud wire cut process or dry press. Engineering department is available for customer service. Vol. 28, No. i jjobeson Process C< 500 5th producers of bindin; industries. Ro0fewood Division, * Beech and Ken. Founded in 1880. artware and ooderglaxe decorate standards of quah pytied this eaviabl Roseville Pottery, L 0 business for mor aftware and decorat 0f underglaze decor items of utility valu Q0ss-Tacony Crurit Taco: Manufacturers of cr jjonded types) for beads for pouring si refractory cements. 0yal China, Inc. Manufacturers of for all classes of trac Royal Copenhagen 1 Manufactory, Inc. Copenhagcr Founded 1779. Pi artistic stoneware, d bageo underglaze monumental cerami Restless Iron Co., L Trico V Vitreous enamel fink ers. comprising rang ing equipment, refri of articles fa. Salem China Co. A medium-sued, w manufacture of met tionally advertised, employment over a Seaporcel Porcelain 28-20 Border Manufacturers of enamelware. Shenango Pottery C Producers of Rimro and Castleton and I Simonds Worden W N. Summit St. e Manufacturers of gr mill engine bars and S.LS.M.L Ma Precision manufacti alumina brick. Nat Silica brick for coke < Blocks for glass ove: magnesite refractori Smith, A. .0., Corpoi 3533 North Manufacturers of a consumer products brick. srUip. ;orta$. 'irwia ^ters ^Urlc of - out. speed -s for tester -nirez -il tile. nnton Pack- Milier indard s conle flint also -lal. iicobs Xrete -ature -epart; walls mmey ..``a. .silicon allized Pius) ement; arbide alloan mgwell ticular >ducts: .meling rivets; Merkel ;ery to - under leering . No. 8 American Ceramic Society--Directory of Corporation Members 311 - K*san Process Co. 'Asgrir Riis 500 5th Ave., New York 18, N. Y. {jucers of binding materials for the ceramic and foundry gjustries. ff0atwood Division, Sperti, Inc. Ralph A. Lostro Beech and VKe*rnn1ilwrorrth A4vvews., Cincinnati 12, Ohio ded in 1880, Rookwood Pottery produces fine ce- artware and is noted the world over for individual `*'jjfglize decorated items; pledged to maintain the high Ljjdards of quality, craftsmanship, and beauty that ^jjed this enviable reputation for Rookwood. -^ffile Pottery, Inc. Robert P. Windisch Zanesville, Ohio _ business for more than fifty years as manufacturers of jr-jare and decorated utility ware; major output consists Jfonderglaze decorated art pottery and some decorated jtous of utility value such as teapots and pitchers. oss-Tacony Crucible Co. A. M. Johnson Tacony, Philadelphia 35, Pa. Manufacturers of crucibles (both clay graphite and carbon* hooded types) for melting metals and graphite stopper for pouring steel; also special refractory shapes and factory cements. pipe, oil-well casing, welding electrodes and equipment, pressure vessels, heat exchangers, glass-lined storage tanks and automatic storage water heaters. Smith A Stone, Ltd. W. B. Ford Georgetown, Ontario, Canada Established in 1920, manufacturers of porcelain insulation, both wet and dry, and porcelain moldings of all types; refractory porcelain, phenolic moldings, and a complete range of wiring devices. Socony-Vacnum Oil Co., Inc. J. C. Dean 26 Broadway, New York 4, N. Y. Manufacturers of a line of wax emulsions for use as binders in ceramic bodies, particularly those that are dry- pressed or have low clay content, and in ceramic glazes for greater handling strength and more uniform applica tion. Solvay Process Div., Allied Chemical L. W. Peterson A Dye Corp. Syracuse 1, N. Y. Manufacturers of dense soda ash, calcined potassium car bonate, hydrated potassium carbonate, and ammonium bicarbonate used in glass and ceramics; technical consult ing service for the ceramic industries. o-rtl China, Inc. B. L. Miller m Sebring, Ohio Manufacturers of high-grade semiporcelain dinnerware fW all classes of trade. Royal Copenhagen Porcelain Chr. Christensen Manufactory, Inc. Copenhagen F., 45 Smallegade, Denmark Soonded 1779. Producers of porcelain, earthenware, jrtistic stoneware, dinnerware and hotel porcelain. Copen- jjjjen underglaze decoration, artware, sculpture, and monumental ceramic works. Rustless Iron Co., Ltd. H. Whitaker Trico Works, Keighley, England Vitreous enamel finish is applied to goods made by custom er comprising ranges, gas and electric cookers and wash- jug equipment, refrigerators, reflectors, and a wide variety gf mlar articles for domestic use. Sovereign Potters, Ltd. W. G. Pulkingham Hamilton, Ontario, Canada Producers of dinnerware under the trade name Sovereign. Spinks, H. C., Clay Co. R. B. Carothers 1000 1st National Bank Bldg., Cincinnati 2, Ohio Producers of the following ball, sagger, and wad clays: Bandy Black ball clay, Bandy Tan ball clay, Black Charm ball clay. Black and Tan wad clays, Buckskin hail clay. Champion and Challenger ball day, Gizmo ball clay, Gleason clay and Old Whittier ball clay. Square D Company H. S. Freeman 6060 Rivard St., Detroit 11, Mich. Manufacturers of an extensive line of safety switches, motor controls, circuit breakers, panel boards, switch boards, bus duct, pressure, float, and vacuum switches; circuit breakers for airplanes and special shockproof switches and molded insulation. t sleni China Co. F. W. McKee Standard Brick and Tile Corp. H. C. Kleymeyer j Salem, Ohio Fourth and Vine Sts., Evansville IS, Ind. I A medium-sized, well-modernized plant devoted to the Manufacturers of shale and clay rough-texture and smooth ? manufacture of medium-priced dinnerware, which is na- face brick, ranging from red to gun metal; common brick; : tionally advertised. A splendid reputation for steady structural clay tile and farm drain tile. Distributors of j employment over a long term of years. glass block, firebrick, glazed brick and tile; buff and gray Seaporcel Porcelain Metals, Inc. face brick. M. Jesse Saltou 28-20 Borden Ave., Long Island City, N.Y. Standard Ultramarine Co. L. F. May Manufacturers of architectural and marine porcelain Huntington 18, W. Va. enamelware. Manufacturers of ultramarine blues, organic reds, iron blues, alkali blue toners and methyl violet toners, and bianc Shmango Pottery Co. James M. Smith fixe (barium sulfate) for the paint and printing ink indus New Castle, Pa. tries. Also soluble and acid blues for writing inks and Producers of Rimrol hotel and restaurant vitrified china laundry bluing. and Castleton and Haviland dinnerware. Stangl Pottery J. M. Stangl Simands Worden White Co. * F. R. Henry Trenton, N. J. N. Summit St. and Negley Place, Dayton 7, Ohio A flexible, modern, two-tunnel loin ceramic plant en Manufacturers of grinding wheels, machine knives, paper gaged in the manufacture of earthenware, dinnerware, and mill engine bars and plates', and butcher tools. quality art ware. Trade name Stangl. S. L R. M. A. U. Guido Ringler Marghera, Venice, Italy Precision manufacturers of chamotte brick and high- brick. Natural sillimanite and light refractories. Silica brick for coke oven, Siemens-Martin and arc furnace. Blocks for glass ovens. Magnesite, chrome, and chrome- oagoesite refractories. Star Porcelain Co. H. Collin Minton, Jr. Muirhead Ave., Trenton 9, N. J. Manufacturers of electrical porcelain, electrical refrac tories, low-loss steatite, and semisteatite by pressing, casting, turning, and extrusion; complete toolraaking and diemaking facilities and research laboratory for special insulating problems. Smith, A. O., Corporation W. A. Deringer 3533 North 27th St., Milwaukee 1, Wis. Manufacturers of a broad variety of capital goods and caosuitier products such as automobile frames, gas-line (1649) Stark Brick Co. ' J. H. Stewart Box 230, Canton 1, Ohio Manufacturers of ceramic glazed, clear glazed, salt glazed and unglazed facing tile; glazed and unglazed standard * {[ / i ! I ,* $ 1< 312 American Ceramic Society--Directory of Corporation Members and heavy-duty floor brick; acid resisting brick and block. Trade names: Brictile, Tribric, Sanitary Floor Brick. celain, steatite, temperature sensitive resistors, tits and zirconia; plain, metallized, and assembled.' glass hermetic seals. Distributors of Kovar in all forn^' Stauffer Chemical Co. G. W. Poland, Jr. 428 Lexington Ave.t New York 17, N. Y. Manufacturers of borax, boric add, anhydrous borax and borax glass, potassium nitrate, and sulfur; also other industrial chemicals such as sulfuric add, chlorine, caustic soda, carbon bisulfide, carbon tetrachloride, silicon tetra chloride, tartaric add, cream of tartar, tartar emetic, and insecticides and fungiddes. Sfimerbank Ankara, Turkey Bul"t Bukus Sur Enamel St Stamping Works, Ltd. M. hr c 9, Middle Rd., Entally, Calcutta, India ' ^ Established in 1918.. Producers of household ware of kinds, hospital ware, sign plates, reflectors, table top? a industrial addproof containers. ' Steele, J. C., 4 Sons, Inc. J. C. Steele, Jr. Statesville, N. C. For sixty years makers of day-working machinery. Complete line of feeders, disintegrators, and crushers for feeding and preparing clay; pug mills, auger machines, de-airing extrusion machines, extrusion dies, and cutting machines for extrusion production of building brick, structural tile, and refractory products. Stirling China Co. W. T. Pomeroy East Liverpool, Ohio Manufacturers of vitrified china tableware for hotels, restaurants, steamships, hospitals, and other institutions, also for the armed forces. Wide variety of decorations, decals, prints, and line treatments, offered on three dif ferent bodies, white, tan, and ivory. Sterling Grinding Wheel Div., A. E. Tulk Cleveland Quarries Co. Tiffin, Ohio Manufacturers of artificial abrasive grinding wheels, brick, sticks, and specialties since 1885; vitrified, silicate, resin and shellac-bonded products for use on standard and high speed grinding machines of all types and makes. Steubenville Pottery Co. W. J. Mould Steubenville, Ohio Manufacturers of high-quality semivitreous tableware dis tributed by the leading china departments of the country and including the Monticello ware by Herman C. Kupper and the American Modern by Russell Wright. Stillwater Clay Products Co. J. P. Duffy 3334 Prospect Ave., Cleveland 15, Ohio Manufacturers of vitrified clay pipe, Interlok wall coping, standard coping, flue lining, liner plates, artistic chimney tops, refractory hot tops, and tile conduit for heat dis tribution piping. Plants at Urichsville, Dennison, and Junction City, Ohio. Streator Brick Co. D. P. Ogden Streator, 111. Producers of shale and fire-clay face brick in smooth and rough textures, shale building brick, oversize brick, and packing-house floor brick; tunnel-kiln and periodic-kiln production facilities; annual capacity 50 million brick. Strong Manufacturing Co. T. F. Shaffer Sebring, Ohio `Complete, manufacturing facilities for black shapes for both hollow ware and flatware; modern enameling equip ment for producing fluorescent reflectors, incandescent reflectors, refrigerator equipment and accessories (pans, doors, panels, etc.), contract job enameling. Structural Clay Products Institute Harry C. Plummer 1520 18th Street N. W., Washington, D. C. A national association' of brick and tile manufacturers which represents the industry before Government offices and on committees of national technical organizations. Its principal activities consist of education, engineering and research, advertising, publicity, and public relations. Stupakoff Ceramic 4 Mfg. Co. Semon H. Stupakoff Latrobe, Pa.' Mass producers of precision-made ceramic and related products for electronic, electrical, and other applications. Alumina, capacitor ceramics, cordierite, magnesia, por- 2375 Dorr St., Toledo 1, Ohio ' Manufacturers of continuous annealing and decorati lehrs, batch-type ovens, coavexing and bending special processing furnaces, continuous conveyer^?' pottery decorating kilns, recuperative tanks for sp^ glasses; combustion engineering service. Swindell Brothers j. r . Bayard and Russell Sts., Baltimore, Md. nts Manufacturers of handmade and machine-made _ tainers for foods, drugs, chemicals, pharmaceuticals scriptions, wines, whiskies, toilets, perfumes, and cosmetic" Swindell-Dressler Corp. Philip rv,ct, Box 1888, Pittsburgh 30. Pa. ^SMef Engineers and manufacturers; designers and builders of every kind of direct-fired, semi-muffle and fuff circular and straight tunnel kiln, operating at tempera' tures from decorating to cone 32, fuel fired or electric heated; car, roller-hearth, and walking-beam conveyor types; recirculating radiant gas tube installations. Sylvania Electric Products, Inc. B. S. Ellefson 208-20 Cross Island Parkway, Bayside, Long ' N. Y. ' Manufacturers of radio receiving tubes, cathode-ray tubes, transmitting tubes, incandescent lamps, fluorescent lamr^ and fixtures, fluorescent powders, tungsten powder and rod, tube parts, wire welds, and electronic equipment Research and Development laboratories at Flushing, Bay. side, and Kew Gardens, New York; manufacturing plants and engineering laboratories in five states; main nffi^ at 500 Fifth Ave., New York, N. Y. Taylor, Smith 4 Taylor Co. Charles R. Landback Chester, W. Va. Manufacturers of Lu-Ray pastels, underglaze prints, and overglaze decorations. The forty-ninth year of service to the trade with quality dinnerware. Tegellaboratoriet Christer Enberg Box 5073, Stockholm 5, Sweden Brick research laboratory. Thatcher Manufacturing Co. Roy S. Arrandale 1901 Grand Central Ave., Elmira, N. Y. Manufacturers of glass containers for milk, foods, bever ages, beer, and liquors; also Fastpak, vacuum packing machine for food products in glass. Factories at Elmira, N. Y., and Streator, 111. Thermo Fire Brick Co. Howard Hicks Sulphur Springs, Texas Manufacturers of first-quality and intermediate heat-duty fire-clay brick and a 2600F. insulating firebrick; first- quality and intermediate brick are made by both the dry- press and stiff-mud processes; also special shapes, cupola blocks, wall and arch shapes, high-temperature cement, plastics, and castables. Titanium Alloy Mfg. Div., Rational Alex Stewart Lead Co. Ill Broadway, New York 6, N. Y. Manufacturers of zirconium oxide opacifiers, xircoc W frits, zirconium silicates for opacification, zircon f<* bodies, zircon refractories, faro titanium alloys for steel industry, rutile and titanates for welding iw* Vol. 28, N 8 tjtaruum compot c0oium compouz Zirconium compc catalysis. Trefiton Potterie; plants No. 5 Manufacturers oi plumbing fixture fountain receptor geney baths, am closet combmauc pwyfords, Ltd-, < Manufacturers of china, and enam equip*01 for ^ fixtures required terries. Tygart Valley Gli Manufacturers o jars to be used e: products. er, W. S., Co. 3615 Super gest weavers < - _ 1 'M Union Electrical I Works, Inc. B Manufacturers of neon accessories, stitutes for meta facilities; during armed services. Union Fr&ncaise c Refractaires 15 Rn A technical and < manufacturing ab United Clay Mine Oakland ar Producers of dom< industry; dame Direct importers following materia.' Albany slip, vitro: United Glass Bot 8, Leicesti Manufacturers of flint, amber, blu colors; pressed di and plastic dosuri United States Gla Manufacturers of; bar, and restaura: scientific ware. United States Gyr 300 W. . Manufacturers of' strength gypsum plasters, U.S.G. j stone, dolomite an *d terra alba tl world. (1949) American Ceramic Society--Directory of Corporation Members 313 ^Ovaj" 'orm^ `^uktas Sur - of all "^s, and Well* ^r^tiag ^aaces, --type special JeSries ;ss con-s, prermetics. Dressier Jders of muffle, izaperaelectric aveyor 3Uefson, iland, -7 tubes, at lamps der and ;:pment. -ig. Bay:g plants n offices .andback mts, and -rvice to 1 r Enberg irrandale Is, bever- packing i Elmira, a 1 Ard Hicks neat-duty ^k; firsti the dry- , cupola _ cement. ; Stewart -irfon for lircon for c for the ^ng rods. 28. No 8 noiu compounds in high dielectric applications, zircompounds for water repellance of textiles and SSonium compounds for pigment lakes and toners and in at#*- -v-fitcn Potteries Co. Leonard H. Hepner ^plants No. 5 and No. 6, Box 141, Trenton 1, N. J. waflofactnrers of high-grade vitreous china and Duraday Jf_Bjbing fixtures; the line ranges from small drinking- retain receptors to large hospital pieces such as emer- baths, autopsy tables, etc., including fine water- combinations, lavatories, bathtubs, and sinks. Universal Clay Products Co. C. A. Bloor Sandusky, Ohio Manufacturers of dry-process electrical porcelain insula tors, standard and special electrical porcelains, glazed and unglazed; also specialists in producing items to customers' drawings and specifications. Universal Dental Co. Joseph Kohn 48th and Brown Sts., Philadelphia 39, Pa. Organized in 1917 for the manufacture of porcelain teeth exclusively, for use by dentists in making prosthetic res torations. Products are sold in every country of the world where business can be done. ---fords, Ltd., Clifle Vale Potteries A. V. Pimble 1 3 Stoke-on-Trent, England j^aflofacturers of sanitary pottery in earthenware, vitreous and enameled fire day; patterns cover sanitary TLjjptDent for every dass of building, induding specialized g^tares required for hospitals, clinics, schools, and fac tories. Universal Potteries, Lie. G. D. Agnew Cambridge, Ohio The products of this company consist of Ballerina colored glaze dinnerware in blue, yellow, green, and gray colors. Camwood shape dinnerware, with complete line of Oven proof cookingware in various colors and types of decorative treatments. --art Valley Glass Co. * 0. C. Noble 3 Washington, Pa. Manufacturers of narrow- and wide-mouth bottles and jjjs to be used exclusively by commercial packers of food products. Universal-Rundie Corp. J. R. Beam New Castle, Pa. Manufacturers of vitreous china and cast iron enamel plumbing fixtures, with factories at Camden, N. J., New Castle, Pa., Milwaukee, Wis., and Redlands, Calif. Cen frier, W. S., Co. C. E. Jenks 3615 Superior Ave.. N.E.; Cleveland 14, Ohio Largest weavers of precision wire cloth: Double-Crimped square mesh, Ton-Cap and Ty-Rod high-capadty screen doth and testing sieves. Pioneers in developing efficient greening machinery: Hum-mer, Tyler-Niagara, Ty-Rock, Xy-Rocket screens, and Ro-Tap testing sieve shaker. tral Research DJyision at New Castle. Valentine Fire Brick Co. W. H. Peterson, Jr. Woodbridge, N. J. Manufacturers of firebrick, fire clays, refractory cements, etc. Modem, highly mechanized production methods. Burning facilities include tunnel kilns as well as standard periodic kilns. Valentine XX, a semisilica brick, is widely Union Electrical Porcelain F. W. Van Orden Works, Inc. Box 762, Trenton 5, N. J. Manufacturers of porcelain for electrical wiring devices, neon accessories, industrial specialties, noncorrosive sub stitutes for metal parts, and special shapes; die-shop facilities; during the war, practically all production for armed services. : known for its production records in ceramic kilns and steel mill furnaces. Vanderbilt, R. T., Co., Inc. Ira E. Sproat 230 Park Ave., New York 17, N. Y. Sales agents for Nytal talc. Peerless kaolin, Pyrax pyro phyllite, clay defioceulant, Rayox titanium dioxide, Re- dium selenium, cerium hydrate, and tellurium; research on new and old ceramic materials; assistance given to Union Frtncaise des Produits Louise Halm customer problems. Refract&ires 15 Rue de Milan, Paris 9*, France A technical and commercial association of 32 producers manufacturing about half the total of French refractories. Vesuvius Crucible Co. Francis L. Arensberg Box 8275, Swissvale, Pittsburgh 18, Pa. The products of this company are in three categories: (1).graphite stopper heads and nozzles for pouring steel United Clay Mines Corp. K. E. Ward Oakland and Prospect Sts., Trenton 6, N. J. producers of domestic china and ball clays for the pottery industry; domestic ball clays are available purified. Direct importers of English ball and china clays. The following materials carried at Trenton: clay, spar, flint, Albany slip, vitrox, artware clays. ingots and castings, (2) graphite crucibles for melting all metals, and (3) special shapes such as stirrers, base blocks, covers, saggers, and pyrometer protection tubes. Victor Insulators, Inc. H. Failmezger Victor. N.Y. Producers of wet-process high-voltage porcelain insulators and chinaware; also special-design porcelain for manu facturers of transformers, switchgear, capacitors, fuse United Glass Bottle Mfgrs., Ltd. - J. Tipping cutouts, potheads, junction boxes, and ceramic specialties. 8, Leicester St., London, W.C. 2, England Manufacturers of glass containers of all descriptions in Vidriera Monterrey, S. A. Alfonso F. Rodriguez Hint, amber, blue, dark green, light green, and opal Apartado 162, Monterrey, N. L., Mexico colors; pressed domestic tableware and tumblers; metal and plastic closures. United States Glass Co. Tiffin 15, Ohio C. W. Carlson Vitreous Steel Products Co. Edgar H. 'Weil - Box 1791, Cleveland 5, Ohio Manufacturers of porcelain enamel table tops and break fast sets; job enameling. (Factory at Nappanee, lad.) Manufacturers of plain and decorated tableware; fountain, bar, and restaurant glassware; industrial specialties and scientific ware. United States Gypsum Co. J. S. Offutt 300 W. Adams St., Chicago 6, III. Manufacturers of U.S.G. pottery plasters, Hydrocal super- strength gypsum cements, AA dolomite, special polishing plasters, U.S.G. plate-glass plasters, raw dolomite lime stone, dolomite and high-calcium lime, glasshouse gypsum, and terra alba throughout the United States and the world. Vitro Mfg. Co. A. J. Strod Corliss Station. Pittsburgh 4, Pa. Founded in 1909 to manufacture ceramic colors and spec ialty chemicals; producers of a complete lioe of colors for potteries, glass, and porcelain enamels; also owners and operators of an ore-refining plant in Canonsburg, Pa. Vollr&th Company Jean C. Vollrath Michigan Ave. and 18th St., Sheboygan, Wis. Manufacturers of stainless steel, .cast iron, and porcelain enameled utensils--for homes, restaurants, hospitals, and dairies--under the brands Vollrath and Vollrath Ware. (1949) 314 American Ceramic Society Bulletin--Directory of Corporation Members Walsh Refractories Corp. J. L. Crawford 101 Ferry Street, St. Louis 7, Mo. Manufacturers of a complete line of fire-clay refractories, including Walsh vacuum cast flux block, CSR (cast silli- manite refractory), and refractory grade upper structure, feeder parts, checker-brick, high-alumina, high-fired superduty, superduty, high heat-duty, and intermediate- duty firebrick, high-temperature bonding mortars, plastic refractories, and castable refractories. Walsh Walsh, John, Ltd. W. G. Riley Soho & Vesta Glassworks, Birmingham 18, England Producers of first-quality handmade decorative domestic crystal and tableware; special lighting glass for illuminat ing fittings; scientific reflectors for floodlighting shop windows and the cinema industry. Washington Brick Co. Thomas Somerville, III Washington-Baltimore Blvd., Muiririrk, Md. Manufacturers of common and face brick; originators of the Circle System; cinder block and Spectra Glaze on cinder block; distributors in metropolitan Washington for firebrick, structural clay products, drain tile, sewer pipe, flue lining, glazed brick and tile, gjaa* block and terra cotta. Washington Porcelain Co. C. H. Ackerson Willow St., Washington, N. J. Manufacturers since 1917 of electrical porcelain for the parent company, The Arrow Hart & Hegeman Electric Co., Hartford, Conn., which is engaged in the manufacture of electrical wiring devices and electrical controls. Watt Pottery Co. Loren M. Watt Crooksville, Ohio Manufacturers of matched kitchenware and ovenware. Peasant Ware with free hand underglaze decorations. Wild Rose with underglaze decoration kitchenware. Past-L Kitchenware with five pastel colors. Flav-R- Bake Ovenware with two color bands, band blown. Western Brick Co. I. R. Cline Danville, 111. Producers of face and common building brick in shades of red and buff; Haydite, a lightweight fired-clay aggregate; facilities for the manufacture of paving brick and hollow tile, not regularly produced. Western Electric Co., Inc. W. B. Tall 7810 Hawthorne Station, Chicago 23, 111. Bell System Supply Brandi. Manufacturers of telephone, telephone-exchange, and outside-telephone-plant equip ment. Purchases supplies and acts as distributor of telephone equipment and supplies. Western Feldspar Milling Co. J. W. Magnuson 1333 W. Maple St., Denver 9, Colo. Producers of western feldspars for glass, pottery, and enamel plants. Westinghonse Electric Corp. John D. Harnish Derry, Pa. This plant makes electrical porcelain products. In par ticular, it manufactures high-tension porcelain for trans mission and distribution systems; also Prestite and zircon Prestite porcelains for special designs of the communica tions industry. WeGsUtinsgshPolnasnet Electric Corp., ,T0q>.e.p,.*B^ Fairmont, W. Va. This plant produces fluorescent tubes used in the facture of fluorescent lamps and exhaust stem an,??611* blowing tubing for making incandescent and lamps. oresceat West Virginia Brick Co. Claude F Charleston, W. Va. ' w,Se41i Manufacturers of unglazed facing tile, face brick ana brick. ' Wheaton, T. Co. Frank H. Wheaton , 1118 N. High St., Millville, N. J. tt- k Manufacturers of borosQicate glass for the biological tna. for packaging such items as blood plasma, penicillin11*^ insulin; all types of industrial glassware, radar, and'rtf? tronic glass components; also a line of perfume and*^' metic containers, including glass-stoppered bottles ^ Wheeling Steel Corp. Ernest B Sow Steubenville. Ohio aayd Manufacturers of semifinished and finished steel product Includes sheet steel for porcelain enamel wareTam bodies, furniture stock, etc. Finished products indm^ galvanized sheets and containers, tin plate, pine f"j expanded metal. Steel plants at Steubenville, Ohio w Benwood, W. Va. Manufacturing plants at YorkvS* and Martins Ferry, Ohio, Beech Bottom, Warwood Wheeling, W. Va.; General Offices at Wheeling, W. y* Willson Products, Inc. Thomas A xirm._ Box 622, Reading. Pa. Originators of Willsonite, Willson-Weld, Alubro-U'eM Super-Tough, and other special glasses for eye protecting manufacturers of sunglasses and a complete line of ere! head, and respiratory protective devices; also air-analyds apparatus for industry. Wisconsin Porcelain Co. L. A. Stohl Sun Prairie, Wis. Manufacturers of insulators, standard and special, high- heat refractories in colored glares, steatite, and ceramic filtering material. Woodrille Lime Products Co. J. Robert Cowell, Jr. 2140 Jefferson Ave., Toledo 2, Ohio For more than forty-five years producers of finest-quality high-magnesium lime, oxide and hydrated; consistently low iron content; prompt shipments can be made from plant of large capacity. Worcester Royal Porcelain Co., Ltd. Joseph F. Gimson Worcester, England Producers of fine bone china dinnerware, statuettes, and ornamental ware; hard felspathic porcelain laboratory ware and cooking hotel ware; alumina porcelain sparking- plug insulators and technical porcelains. Worthington Pump and Machinery Corp., J. C. Lukas Ransome Industrial Mixer Dmsion Dunellen, N. J. Manufacturers of industrial mixers of all kinds for the ceramic industries; also welding and work positioning equipment. Vol. 28, No-8' interests of t only by its office ttees. Each of th ms fcr the generals course, have com in their parties in most instance iflted by the Divisi ,n offices have, in jeedent of success program chairman is portant appointment is of course not mane mined, for if a poor stances arise which n an appointee, he certa By experience and formulated along sens possible. The rules responsibilities of the ny do they elimina people for our commit These are highly r not always recognize* appointee or a nomi; considered from many factors given the lea; is, whether the indiv; and willing to work < Often a man is appoi qualified for the job interested in the job Very often the busy work, is a poor c qualifications or his l or less successful, but v of time, may contribut Matters of experie; consideration. While to serve they may no pered imagination nee it to a practical soluti are composed of enou to possess the require Continuity in our i couraged by reappoir Projects of one year w (1949) The American Ceramic, Society L February 15,1993 I hereby certify that the attached copies of American Ceramic Society Bulletin, Volume 28,1949, are true and accurate copies, which are maintained in the normal course of business at the American Ceramic Society, 735 Ceramic Place, Westerville, Ohio 43081. Christine Schnitzer Product Manager Ceramic Information Center 735 Ceramic Place Westerville. Ohio 43081-8720 614*890*4700 TWX: 7101109409