Document 2NQDZNL68mVM3v8K7agdk5d7r

FILE NAME: Allis Chalmers (ALL) DATE: 1946 Nov DOC#: ALL004 DOCUMENT DESCRIPTION: Article and Advertisements from Trade Journal - Southern Power and Industry 1 0 u OF NOV 1 9 1 9 W I Oct the 107 Extra C a p a city in muco 3 &* % 0Ec^ Hk"" MODERN B SALES AND SERVICE: 915-101 Marietta Street Bldg. ATLANTA, GEORGIA B IR M IN G H A M ST. L O U IS severa perty. night, W Continuous work, Philco pioneered the modern extra capacity bat tiprovides 10% additional capacity with no increase in overall size. |reat advantage, first made available in Philco Type XL and XVL |ies, is an outstanding feature of the famous Philco "Thirty", .. the jptith 30% longer life. For today'sheavier work schedules, make sure In capacity you can get. Specify a modern Philco. Write for catalogs. S i CORPORATION, Storage Battery Division, Trenton 7, N. J. ILCO FOR 50 YEARS A LEADER IN INDUSTRIAL STORAGE BATTERY DEVELOPMENT suggei a equi] e n ts omy. I in thi icialisi rvice idatio] ineersj e i n ri f by ; o r b: icilitii quippe -- stee| Jttts&ara L. Priesa, 1341 Liberty W- Bank Bldg., Dallas, Texas.-- m- Phone, Central 7678. neriesM I ------ itceterail S p `,1, Annual Subscription-- 31,00 y ; Canada-- *1.60; Foreign *2.00 alb oilel Published Monthly by w R. c. SMITH PUBLISHING CO. JlfftW ishers also of: Cotton, Elec- 1 1 Smith, Southern Hardware, ' Automotive Journal, ifMpw^crn Building Supplies. S Booke, President; R. P. Executive Vice-President; 8 1 McAllister, Vice-President; O'Brien, Vice-President: G. Smith, Vice-President *, Cook, Vice-President; O. A. lSPameBB. Treasurer; A. P. Hob J H B Secretary. .evelaND^I ; and Venttlalfcfe, .oats and BtnESi ir Transport#; mjH p ^ l*t.e f/o. / --rod Executive Office! |j|- grant building ATLANTA. G EO R G IA BER. 19% Mechanic! Handling of Cros*Tfeiy A. M. Pelfar*. m rjrl* M ? P ;| jp g B j. |fii^ G *|e d Lynchhisip*} by Franc!*'CiSrtilih **' l'i\ ihV,, H I v- f .-.i - .. ' - , TM g | i : *7J, % 1 5j* I ' . 1 V . 1Centrifugal Boiler Feed'Pumps, by Igor J, Karassik V1 <>rx :\ i %ik".^; ^ <'' ,k> Jv` ok - s5c*Ji/r. -'>Sr''w> Labor Turnover, by Philip Panfieid ...................... M p ^ t s!\ ^ * Damage by Fiy Ash Erosion, by Harry M. Spring >< * , %*'|>-i ! i 'A' 1 ^ i " * J - illlet 'I............. . , ............ i A History of Power, by Carl J. Eckhardt, Jr.......... `Did You Say, Upto2000 Sip ..Weatherproof?" ifferenid I--GTuefllfi -Builetli oivnel Croepgeij; lRoTreHdEdRii ive. Erli B--B u l$ | res. agdivvainng^pj is instrq^ l boilerfcp iqnuidpso,wOnTet^?j es up to MPANTig etera in 0PfS/-| ilse,cshlauangice^gJlLj widew-;^ ib i n a tio n ^ grating.-*r|| oe Roadgi f,So--r dBeuvlele!-; ty in d e rsj j ichines.-^. ve., New lleletidnesNlgliP-.ri nhon bel?', iits, opea-j ,tc.--TB$! 5 4, Ten*- ), 6 p* ewr reaM?.H plicshO)<&j t'y- , 2006 *4Y;: trireeoWH**i , 5 if. In Allis-Chalmers' modern |tor line we're now prepared to offer &uacomplete-range of outdoor weather- PEpiif, totally-enclosed motors all the (ayfromsmall, standard ratings to sizes {j2,000 hp or larger." "Why, That Means Then," our cus tomer exclaimed, "in larger ratings they fill the need of power plant engineers who want to install equipment like draft fans outside, and thus keep down struc ture costs per kw capacity." Right again --and they fit into other industries too! Chemical, for instance. Here cast iron motors have generally been preferred . . . because they stand up better under acid and alkali conditions. But now these new motors, with new design im provements, promise to provide several important operating advantages. . . Looking for a Good Motor? "'ve Re-designed the heat-transfer "?torn to improve ventilation. We've Weed maintenance by making air Usages not only more accessible, but tactically self-cleaning as well. And ItjVe eliminated liquid and dirt-trap- 1*8 pockets. In the smaller ratings we Course offer our standard design. Specify"Allis-Chalmers" !Forwhether your job calls for a large motor like that above, or a small standard machine, you can be sure of getting two things when you specify "Allis-Chalmers:" 1) Exactly the right type and size motor; 2) consistent with the finest quality work manship of which we are capable. For the full story of liberal Allis-Chal mers motor construction, call our nearby \ dealer or sales office. A llis-Chalmers, M ilwaukee l, Wis. a 2117 Uj wSC One of the Big 3 in Electric Power Equipment -- Biggest of All in Range of Industrial Products ERN POWER & INDUSTRY for NOVEMBER, 1946 cult are to devi d by .; I wheni rials MBER, Industrial Hygiene Importance of Dust By If. V. H endricks Chief Engineer Industrial Hygiene Service, Georgia Department of Public Health N early all types of m odern industry a r e concerned w ith dust and Its control. Courtesy M, S. A. Co I, TH E M IDGET IM PIN G ER USED FOR CO LLECTIN G ATM OS tiate between the PH ERIC DUST SAM PLES. o r i g i n of these materials, a defi nition of them is in annual cost to industry am u n c o n t r o l l e d dust its to a staggering figure. In Jr. cases the problem of dust is by management as only fisance. In other plants, the jfery of certain dusts is ecosound, especially where ^articulate matter may con- precious metals or may carry ble processing stock. Aside ;f 'any nuisance or economic ' resulting from the escape of 1 there are certain dust exres which may result in acute 1th hazards. This is especial ly of dusts containing a high of free silica, asbestos, ter toxic materials. Where considerations are involvi'such exposures, legal aspects jtjent themselves. In most states |re occupational diseases are order. DUSTS are formed by the re duction of earthy materials and are usually produced by such ope rations as crushing, grinding, buffing, etc. The particle size of dusts may vary considerably, ranging from sub-microscopic to visible. FUMES are formed by conden sation and sublimation. Chemi cally, they are metallic and are usually the oxides of such metals as zinc, and lead. The particle size is usually below one micron. Smoke comes from the burning of organic material and its par ticle size is usually less than onehalf micron. Mists and Fogs result from the condensation of water vapor on suitable nuclei, and the particle size will vary with given con ditions. |pensable, specific coverage is ytl to those disabilities result- frorr. the inhalation of silica General Properties As a substance is reduced in particle size, there are certain Definitions Ny times true dusts are conJi with fumes, smokes, mists, Miftgs. In order to differen general properties of the material which are changed. On breaking up a solid into finely divided par ticles, the surface area is greatly enlarged and therefore the space occupied is greatly increased. As an example, a piece of quartz one centimeter on each side when crushed to where the particles of one micron in size will present a system containing 10" number of particles. The total surface area will be 6 square meters. If these dust particles are dispersed onto the atmosphere in such manner that the concentration will be 100 million particles per cubic foot, the space occupied by this dis persed system will be 10 thousand cubic feet. The chemical activity of a solid is considerably increased by a reduction in particle size. Thus the rate of oxidation is increased as is evidenced by occasional dis astrous dust explosions. The phe nomena of adsorption becomes more important as gases are more easily adsorbed on the surface of the smaller particle. From the standpoint of health hazards resulting from dust ex posures, the physiological proper ties of dust vary somewhat with the particle size. It is an accepted fact that with exposures to silica dust, the smaller the particle size, the greater the hazard. Physiological Response Drinker has summarized the re actions resulting from the inhala- POWER & INDUSTRY for NOVEMBER, 1946 61 tion of dust by classifying the re sponse into four groups. These are: (a) Pneumoconiosis--The dusts producing this type reaction are harmful only when inhaled. The principal materials producing this type reaction are free silica and asbestos dust. On inhalation, these two materials produce specific lung pathology and from the standpoint of disability, present the most important of the dust ex posures. (b) Toxic Reaction--(As poison ing by lead, cadmium or radium) These materials produce harmful effects when taken into the body both by inhalation and ingestion. With reference to lead and its compounds which may be present in the atmosphere as particulate matter, it has been fairly well established that entrance into the body oy inhalation is more im portant mode of entry than the same material taken by mouth. This is primarily due to the fact that when such materials are tak en into the body by inhalation, the major portion is taken into the blood stream, whereas, a consider able part of that taken by mouth is removed by certain organs of the body. (c) Metal Fume Fevers--These conditions result from the inhala tion of finely divided fume par ticles. The importance of metal fume fever has been brought to the attention of industry by the great amount of welding which has been an important industrial tool for the past few years. Where burning or welding is done on sur faces which have been galvanized, the problem of metal fumes be comes immediately important. FIG . 2. T H E E L E C T R O S T A T IC P R E C IP IT A T O R A S U SED FO R C O LLE C T IN G ATMOSP H E R IC SA M PLES OF DUST AMD FUM ES. IN S E R T SHOWS RA TE OF SE T T LIN G OF DUST. This is also a problem in where the pouring of bn done. (d) Allergy--This type r is in general produced by and certain organic dusts. Common Industrial Carbonates are usually ed with either calcium nesium. They normally nature as calcite and mag or as dolomite, which both magnesium and calci the carbonate. Limestone marble c o n t a i n consid amounts of these carbonat. do the materials from whip] ment is made. Due to the solubility in. fluids, these materials are n ed when taken into the b inhalation. The presence bon dioxide in such fluids 1- important factor influencing 1 solubility. The same thing aj to the presence of carbon _ in water which comes into with these materials. In the ence of carbon dioxide the- bonate is converted to the , soluble bicarbonate, thus ad to the ease with which it is r ed by solution. Experimental and practical servations on carbonate dust dicate that these materials an harmful when taken into the by inhalation. This is pro due to the fact that they are ly removed due to their soluh Sulfates are common ind materials and this general,; may be illustrated by which is calcium sulfate, a common material and is used in many industrial ,'c tions. It is generally consi that this type material is ic and does not present any," ticular problem from a Jv standpoint. Oxides vary considerab their physiological reactioi general the nature of the r will be dependent on metal from which the oxide rived. Where such me specifically toxic, as would case with arsenic or lead, , cific toxic' reaction could j pected from the inhalation oxide. However, other oxidl pear to be relatively ha: particularly where the me of a non-specific type. Thisl i l of iron oxide. The mining results numbe in t r of he exposure men to the ooof-xide. SOUTHERN POWER & INDUSTRY for NOVEMBER, cmg ng apj n dio to con . the] the the is add is retta leticai : dust | ils are ! t the I prob r are i solubili indus eral gyps 2, T h i is wid| al op ionside s non-t any a heal) J rably t. ction. e reacj^ the ty ride is fj letals | old be f ad, a sj Id be | ion of t oxides ? harm mtal; 'his is ti ng of il of a grt oxides 1BER, jffc G EO RG IA K A O LIN D U ST M AO N IFICA- t' TION I30X. Ip vmetal. However, it appears exposure to the dust of iron |not produce pathology unguch exposure is accompanied ip pressure of free silica, mining of coal results in (sure to coal dust which conl ^ high percentage of carbon. J studies of exposure to p iist have been made by the K -2Public Health Service and agencies. It has been found iiia general, coal dust is re"lid in the lungs only when li dust contains a high perp,tage of free silica. Although 1 dust may be deposited in the of exposed individuals, the adition resulting is usually not iMdered disabling unless silica Hjpent. licates make up an important i ' of industrial materials and 5. used principally in the prodon of ceramics and similar erials. Talc, kaolin, mica, if, etc., are chemically silicates their widespread industrial ap- Ueation results in a great number m employees being exposed to 4s type dust. With the excep||lt of asbestos, which is a silicate, us general class of materials does appear to produce a disabling Johdition, except in isolated cases, U p taken into the body by in- ation. '' Asbestos is the only silicate |bwn at the present time which . luces a lung pathology corntable with that resulting from sure td silica dust. p |;$ ll the dust found in indus,Improbably the most important w e e silica or silicon dioxide. It in the form of quartz, flint, pdstone, and chert; and is as- FIG . 4. Q U ARTZ D U ST (S i 0 2) M A G N IFIC A . TION I30X. sociated with many other miner als and ores. The disabling con dition resulting from the inhala tion of free silica is known as silicosis and has long been a problem with industries such as stone cutting, granite, foundry, abrasive, and the like, where sili ca is used in processing. There are relatively few industrial ope rations which might result in di rect exposure to pure silica dust. The importance of silica lies in its association with other materials. As an example, in foundry opera tions the dust generally will con tain clay and materials of a nonsilicious character, so that the ac tual percentage of free silica may be relatively low. This is also true in exposures to coal, iron oxide, and the mining of ores. When hard rock or silica is present, these dusts become important mainly due to the presence of silica rather than to the inherent properties of the parent material. Factors Influencing Hazards In evaluating the exposure to a dust there are several factors which should be taken into con sideration. The duration of ex posure is important, as it will in dicate in a general way the total amount of dust which might be expected to have entered the body. Obviously other factors enter into such an evaluation of total dusti ness, and these will be discussed later. History, of past exposure is important. This is particularly true where an individual is ex posed to silica dust. This point is of extreme importance to industry due to the fact that a worker may have contracted silicosis under a FIG . S. CALCIUM CARBON ATE OUST MAG- N IFIC A TIO N I30X. previous employment. Where such a condition exists, the desirability of preemployment examination is obvious. The c o n c e n t r a t i o n of dust breathed is important as this, within certain limits, will deter mine the possibility of develop ment of dust diseases. Consider able research and practical obser vations have been made in the field of dust exposures to corre late clinical findings with atmos pheric concentrations. For free silica, asbestos, and some of the other materials, fairly definite standards have been established. The nature of dust is important primarily from the standpoint of free silica content. This is par ticularly true of mixed dusts which constitute the majority of industrial exposures. The volume of air breathed enters into the picture as it directly influenc es the amount of dust which will be taken into the body. The rate of respiration or amount of air breathed in general will be de termined by the physical effort required on the particular job. Where heavy work is being done, naturally an individual will re quire more ventilation than where less physical effort is involved. Dusl Measurements In addition to the factors in fluencing dust hazards, it is neces sary to make direct dust measure ments in order to obtain a true evaluation of any dust exposure. Such measurements are made by the actual collection of dust sam ples, the counting of the dust par ticles, and by the identification of the materials making up the dis ^ITHERN POWER & INDUSTRY for NOVEMBER, 1946 63 persed system. For the collection of dust samples, several instru ments may be employed. Much of the early work done on the control of silicosis in the mining areas of South Africa was carried out with the Konimeter. This instrument has been used some in this country, however, it has not met with the popularity which is enjoyed by certain other methods. From the standpoint of collecting efficiency, the electro static precipitator is probably the choice instrument, however, most of the work done on correlating atmospheric dust concentrations with medical findings has been based on samples collected and counted by the Greenburg-Smith technique. The collecting device employed is an impinger unit which samples at the rate of one cubic foot per minute. Counting by this technique is done under light field. The per centage of free silica in a dust sample is usually determined by either chemical or petrographic methods. Permissible concentrations of dust havg been established for free silica, asbestos, and other ma terials. For both silica and asbes tos, 5 million particles per cubic foot is considered as maximum working concentration. The U. S. Public Health Service has suggest ed a procedure by which the total dust concentration in millions of particles per cubic foot is multi plied by a percentage of free sili ca. If the resulting figure is more than 5 million particles per cubic foot, the condition is considered unsafe. If less than 5 million, the condition is considered safe. There should be considered certain limits of dustiness for any type of dust, whether it be merely a nuisance two 15-foot fans are instai value or health consideration. To which handle 500 thousand cuj most industrial hygienists, 50 mil feet per minute each. Actua lion particles per cubic foot is the maximum atmospheric concentra tion of dust under which an em ployee should work. It should be pointed out that the only way of determining both the nature of the dust and the actual concentration is by direct sampling and similar procedures for the counting of the material removed by these f is made up principally of snj(| rather than true dust. $ Two electric arc furnaces operated and these are equip,, with roof fans located iminediati above the units. These fans han 60 thousand cubic feet per min dust. each. Again, the major portion, Case History the material coming from the:;! furnaces is smoke rather than jj|g MANY industries having prob dust, and comes from the all* lems of dust control recog and flux material charged in ttil nize the existence of such problemfusrnaces. to varied degrees. Some take pass A problem of dust control in,. ive attitudes, while others apply foundry is the shakeout operatij s o u n d engineering procedures This is particularly true wl which result in a real job of dust s h a k e o u t is mechanical control. Such modern engineering handled on a vibrating screen , methods are used by the Le- grate. Here, a line conveyor ^ Tourneau Company of Toccoa, tern is used to bring the casts Georgia. directly to the shakeout grate,; This particular plant manufac canopy type hood is installed :'fi tures heavy road grading equip mediately over the grate itselfjjj ment and its major dust problem addition to canopy, side enclost lies in operation of a foundry for are provided which prevent the protection of basic steel parts. leakage. The fan serving this h It is interesting to note that this delivers 35 thousand cubic feet Company considers the control of minute, which results in a dust as a part of the general over capturing velocity at the ent: all production schedule and as a and discharge ports. An exce result has its control methods inte job of dust control results on tn9 grated into general plant opera particular operation. tions. Sand conditioning in m a|| Although there are several foundries is a dusty job. With j methods which can be used for LeTourneau Company thi^ control of dust, ventilation, both handled by means of local exh^i in the form of general and local ventilation and three bag typ< exhaust, probably offers the most ters handling 6 thousand cubic satisfactory method and it is this per minute each. Tumbling ope approach which has been used by tions for cast cleaning are also;jffl the LeTourneau Company. For vided with local exhaust vent. general ventilation in the foundry, (Continued on page 80) FIG . 6. LO C A L E X H A U S T ON TU M B LER S FOR C A ST C LE A N IN G . FIG . 7. BAG HOUSE AND SAND B L A S T U N IT FOR C A ST C LEAN IN ^ Courtesy LeTou*?. v:: ,,j-W SOUTHERN POWER & INDUSTRY for NOVEMBER. and unburned fuel has also been in the plant. found in stoker-fired boilers. The modernization prp At the time of each shutdown for the Brock Candy Compg ' cleaning and preventitive main ing place at a time w tenance (at least once every four any product, regardless o months), all areas vulnerable to or cost, can be sold. Tne; erosive attack should be examined. tlenecks today are shortag Areas most susceptible are ^ . materials and skilled / 1. Where flow of gasels makes a However, progressive bu \ furii throwing out particles'of know that these condj v Solids; ` r r i t only temporary and that 2. Behind any cracks, breaks, or few years, companies w I;'* j gapsj ii a gas baffl. -, ; not guarantee quality IKt 3j. Adjacent to any) prJojectipn ablp to sell their produ that might divert normal flow' Brock Candy Company, I of gases. tinue to be a leader in its at least 75%. Figure 2 shoves .the Should the boiler be provided cause it has refused to condition of thie tube that JBaiied: with an induced draft fan, observe quality of its products Other tubes were found eroded the condition of the blading. Ab days when consumer dem adjacent to U bolts holding baffle normal wear may be indicative of greater than the supply of '1 tiles. The U bolts provided suf erosive attack in the boiler. terials and because it has? i' ficient interruption in las flow to Careful attention by all engi inaugurated a program of; cause eddy currents aifd localized neers to the problem of rosion and research which will (iI: impingement. (Fig. 3.) may well prevent a serious acci constant improvements. Erosion by particles* of fly ash dent. Dust Candy Making* project on improvement, of the ( Continued, from page quality of candy has been sponsor tion and dust arrestors as (Continued from pipe 60) ed by the Brock Candy Company in the photograph. Note at the Industrial Research Institute haust is applied through?; not be taken for granted, a chemi of the University of Chattanooga. trunnion of the tumbler. i cal laboratory is essential. Since ail raw materials will be In foundry operations or'i ,. The Brock Candy Company is analyzed and tested in the com other industrial type proce now in the process of constructing pany laboratory, variation in prop housekeeping is an important^ a modern chemical laboratory and erties will be detected before the tor influencing the generati training a technician to perform material is used. This procedure dust. This foundry employs control analyses. The laboratory, will assure products of uniform five horsepower vacuum clea which is located in a large air con quality, since inferior raw ma for floor maintenance. By thif; i! ditioned room near the candy' terials will be discarded and form cedure loose dust, sand, and cooking operations, is equipped ulations will be based on the ac like, is removed from the floor with modern stone-topped labora tual analysis of high grade raw is not projected into the a . tory benches, the latest chemical materials rather than on standard phere by the movement of glassware, and such special analyt procedure which do not make al chinery, scuffing of feet, and| ical instruments ., as. balances, lowance for variation in the in like. This is one impressive vacuum oven, refractometer, and gredients. Analysis and testing will in the operation of this parti? pH meter. Provision has been made assure high quality of finished foundry. Excellent houseke? for such analyses as moisture, in products and permit any difference is combined with a good proce? vert sugar, viscosity, pH, melting in quality to be detected. In this for materials handled. point, and refractive index. Many way, any unavoidable errors in In all of the attempts at dust of the control tests have been de manufacture can be corrected and trol at the LeTourneau Com veloped specifically for the Brock adequate controls instituted to pre employee cooperation is obta Candy Company, and new pro vent their reoccurrence. Employee c o o p e r a t i o n c cedures will be added from time to time as the need arises. The Industrial Research Institute of the University of Chattanooga The facilities of the control lab oratory will also be available for the evaluation of research and de velopment work being carried out through planned program of ployee education and empl participation in affairs invdf the health of the worker. has cooperated . with the Brock in the factory. In addition to main Periodic dust samples coll Candy Company in selecting the taining the production of uniform in the LeTourneau foundry equipment, outlining and develop high quality products, the person cate atmospheric concentratio. ing. analytical procedures, and nel and equipment of the control various operations well training a technician to operate the laboratory will be available for what is considered as maxi control laboratory. A research many other technical, assignments safe working limits. 80 SOUTHERN ROWER .& INDUSTRY,for NOVEMBER.;| ADVERTISER'S INDEX The Advertisers' Index is published as a convenience, and not as a part of the advertising contra Every care will be taken to index correctly. No allowance will be made for errors or failure to inse A Airetool Mfg. Co.................. 129 Aiken-Murray Corp......... .........................100 Allen Bradley Co. ....................... * Allis-Chalmers Mfg. Co......... . 9 Allpax Co., inc. .................................. ...124 Aluminum Co. of A m erica .................... * American Blower Corp.............................. 32 American Coal Burner Co........................ 133 American Engineering Co. (H oists). . . . 35 American Engineering Co. (Stokers).. * American Monorail Co............................... 38 American Pulverizer Co............................110 Anaconda Wire & Cable Co.................... 33 Anderson Co., V. D................................... 119 Arkansas Fuel Oil Co......................... * Armstrong Machine W orks.................... 85 Asbestos Tex..ile & Packing Div., Raybestos-Manhattan Corp......... . Audel & Co., Theo ........................... 130 Automatic Transportation Co................... 29 6 Babbitt Steam Specialty C o .................. 130 Babcock & Wilcox (Boilers) ................. * Bailey Meter Co.......................................... * Bald win-Duckworth Division ....... * Bay State Abrasive Prod^ Co................. * Beieo industrial Equip. D iv isio n ...... * Belmont Packing & Rubber Co.......... 106 Betz, W. H. & U D .................................. 31 Bird Archer Co.................................... * Black-Sivails & Bryson .................... .101 Blaw-Knox Co. (Grating Division). . . * Brad-Foote Gear Works .................... * Brown Instrument Co. ............... : . . . . 28 Brownell Co................................................ * Buell Engineering Co., Inc.......................91 Builders Providence, Inc...........................127 Bussman Mfg. Co........................... 82 and 83 c Carlisle County Ice Co.........................1 3 2 Carolina Refractories Co.......................130 Chapman Valve Mfg. Co. .............. 36 Chicago Bridge & Iron Co.............. ,...1 1 7 Cities Service Oil Co. ............................ * Clark Mfg. Co................................................11 Classified Ads .................................. .....1 3 2 Cleveland Chain & Mfg. Co.....................123 Clipper Belt Laeer Co. ........................ * Cochrane Corporation ............................ 104 Combustion Eng. Co., Inc............ 14 and 15 Combustion Equipment Div. ............. * Continental Gin Co.................................. 103 Crane Company ....................................... 23 o Dart Mfg. Co., E. M................................ 102 Davis Regulator Co.................................. 131 Dayton Rubber Mfg. Co........................... * De Laval Steam Turbine Co.................... * Detroit Stoker Co...................................... * Dravo Corporation (Heater Dept.)___89 Dravo Corporation (Power Dept.) . . . . 2 E Eagle-Picher Co.......................................... 95 Edge Moor Iron Works, Inc............... 4 Edward Valves, Inc.................................. * Elgin Softener Corp................................... 135 Engineer Co................................................ * Ernst Water Column & Gage Co..........128 Everlasting Valve Co. .................... * F Fedders-Qulgan Corp................................ 114 Fisher Governor Co. ......... * Flexible Steel Lacing Co.......................128 Flexltallie Gasket Co................................ * Foster Wheeler Corp................................. 79 Frick Company ........................................123 Fulton Sylphon Co................................... 97 Fyr-Feoder IndustrialStokers ................ 133 Uardner-Denver Co.................................... * Garlock Packing Co...................................27 General Coal Co........... ............................ * General Electric Co................................... 87 Golden-Anderson ValveSpecialty Co. 133 Goulds Pumps, Inc................................... * Gould Storage Battery Corp.................... * Greene, Tweed & Co................................ 112 Grinnell Co................................ Back Cover Griscom-Russell Co................................... * Gulf Oil Corp.............................................. 106 H Hall Laboratories, Inc. ............. 20 and 21 Hercules Float Works ............................ 120 Hoffman Combustion Eng'g. Co............. * Homestead Valve Mfg. Co........................ I l l Industrial Electronics Co. . . . . . . . . Ingalls Iron Works Co....................... .126* International Exposition Co............. ! 18 International Nickel Co., Inc......... Iron Fireman Mfg. Co....................... J Jenkins Bros................. Inside Back Cover Johns Manville .................................... 71 Tohnso- Service On............................. * Jones Foundry & Mch. Co., W . A........... Kewanee Boiler Corp. .. Kirk & Blum Mfg. Co. L Layne & Bowler, Inc................................124 Leslie Company ....................................... * Liberty Engineering & Mfg. Co............... 24 Lille Hoffmann Cooling Towers, In c...131 Lincoln Electric Co................................... * Link Belt Co.............................................. 17 Liquid Conditioning Corp........................ * Lummus Company ................................... * Lunkenhelmer Co...................................... 39 M M & H Valve & Fittings Co.................... * Manzel Brothers Co............................. ..128 Marion Machine Fdry & Supply Co. ..124 Marsh Corp., James P...................... * Mason-Neilan Regulator Co.................. * Medart Company ..................................... 121 Midwest Piping & Supply Co., Inc....... 99 Moccasin Bushing Co................................127 Monarch Fuse Co., Ltd........................... * Morse Chain Co.............. 25 Murray Iron Works Co............................116 Murray Mfg. Co., D. J............................... 126 N National Aluminate Corp........................ 1 National Boiler Protector Co................. 118 National Valve & Mfg. Co....................... 26 Niagara. Blower Co................................... * Nicholson & Co., W. H............................ 130 Northern Equipment Co............... 34 Norton Co.................................................... * Nugent & Co., Inc., Wm. W ................... * Oakite Products, Inc...............................122 Otis Elevator Co...................................... 16 Peabody Engineering Corp. Peerless Pump Division ......... ,-zm Permutit Co.................................. P Philco Corporation ................ Prorij Pittsburgh Piping & Equipment s Plibrico Jointless Firebrick Co. Powell Co., Wm...................... Power Show, 17th National . . ;t;S Powers Regulator Co............. Prat Daniel Corp.......... Pritchard & Co., J. F. Quaker Rubber Corp. R Raybestos-Manhattan Corp. (Asb__ tos Textile & Packing Division)) Refinery Supply Co.................... Reliance Electric & Engineering :! Co.................................. Inside Froii Republic Flow Meters Co. .. Republic Rubber Division .. Richardson Scale Co............. Ross Heater & Mfg. Co......... Roto Division ........................ Round & Son, David ........... S 71 Sarco Co., Inc............................... .'jiPl Shaw Co., Benjamin F........... Shell Oil Co., Inc...................... Shepard Niles Crane & Hoist Qbfij Sinclair Refining Co................... Skinner Engine Co..................... Smith, Inc., Winfield H............ . Smooth-On Mfg. Co............... . Snap-On Tools Corp..................r&S Socony-Vacuum Oil Co............. Southern Natural Gas Co......... Southern Rail ay System . . . . Southern Supply & Equip. Co. Squires Co., C. E............... Standard Oil Co.......................... Strong, Carlisle & Hammond Co.-. Sturtevant Co., B. F . . . . . . . . Syntron C om pany................ . Taylor Forge & Pipe Worksi ...*$ Terry Steam Turbine Co., The Texas Co........................ . .......... . Todd Shipyards Corp. .............. . Trico Fuse Mfg. Co.............* Troy Engine & Machine Co. u U. S. Hoffman Mchy. Co. United States Rubber Co. Voss Co., J. H. H. ............. Vulcan Soot Blower Corp. w Want Ads ...................... Warren Steam Pump o., Watchemoket Optical Co., Webster Engineering Co. *./ Westinghouse Electric Corp. ^i Wheeler Mfg. Co., C. H. -- Wilson. Inc., Thomas C. Wing Mfg. Co., L. J. Wrigley Jr., Co., William . Yarnall-Waring Co. 134 SOUTHERN POWER & INDUSTRY for