Document 3JDNZxe0m26mwNne5kENQO2g0

FILE NAME: Ingersoll Rand (IRD) DATE: 1937 July DOC#: IRD001 DOCUMENT DESCRIPTION: Trade Journal Article and Advertisements Vel. 30 Published on the tenth of each month for producers and manu facturers o f Cement, Crushed Stone, Gypsum, Lime, S a n d , Gravel end other nonmetallic min erals. Copyrighted 1937 by C o m plete Service Publishing Co., S38 South C lart Street, Chicago, III, H. W . BAU M G ARTNER President STAN LEY A. PHILLIPS Vict-Pittident end Directing Editor Field Editor: W . E. TRA U FFER Arthtant Editor: HARRY F. UTLEY C ontributing E ditor: W IL H E L M C A R L RIETH Circulation Menager: W . T. K L U S S M A N Advertiting Monager: J A M E S E. M O N T G O M E R Y Telephone HARrison 9357 Chicego, III. Eeitem Advertiting Manager: W . A. BUSCHMAN Room 420, 122 East 42nd St. Telephone CA Led on ia S-4438 New York, N . Y. Control Advertiting Manager: W. H. SAN DERSO N Auditorium Bldg. Telephone CHerry 6339 Cleveland, O. Advertising Representatives: FRANK G. LAUGHTON New York, N. Y. D. R. EG BER T Chicago, III. Field R epresentatives: A. C. PETERSEN J. K. G A R E S C H E July, 1937 CONTENTS News of the In d u stry ............................ 29 Editorial: Intimidation in Labor Disputes ... 34 Reports Presented at A. S. T. M. Meeting. .36 Special Cement-Mill Section ................... 37 Marquette Completes Part of Improve ment Program ................................. 43 Closed-Circuit Grinding with Air Sepa rators............ 53 Separators Improve Grinding Efficiency. 63 Saving in Air-Compressor Applications.. .67 Cement as Engineering Material to Stay. .71 Bowl Mills and Recuperators Responsible tor Power and Fuel S a v in g s ............. 73 The Autoclave-- New Cement Soundless T e s t ............................................... 77 Crusher Changes Affect Entire Plant....... 79 Past, Present and Future of the Occupa tional-Disease Situa tion..................... 83 News and Views from the C a p it a l........... 86 The Future of Labor Relations..................89 Regulating Hours in the Aggregates Ind ustry............................................. 97 Research fn Industrial Sand Ind ustry.......... 93 Profitable New Products S e c t io n ............. 97 A Product Easy to Enthuse A b o u t !........ 98 Steel Industry Uses Own Slag in Concrete 100 Truck-Mixer and Agitator Standards___102 _/MIMllTt. A" \ Men of the Industry................................... 107 Personal M ention....................................... 108 Foreign Developments...............................109 Traffic News Digest................................. 110 Now Machinery and Supplies.................. 112 No. 1 Past, Present and Future of the ^Occupational-Disease Situation* l ly C. O. SAPPINGTON, M. D. v Consulting Industrial Hygienist \ i O U will recall in your high-school j ji f V history courses that this study was divided into several parts, one per" .4r taining to ancient history, one to medic^w |Pfval history and another to modern his i-tijry . It will be rather convenient in |ki/presenting this review of the occupa| | | | ''iional disease situation to make compar- .{^jlltons between these kinds of history and ||ffh e periods of evolution through which have passed with regard to occupa c i tional-disease conceptions. fifoO ur past experiences may well be iiompared to the period of ancient his- ifptory and this period may also well be -iciilled the stage of guesswork and hys:ria. Your interest and the interest of people has been in the spectacular, id, in fact, this has been the basis for impensation laws in regard to mechaninjuries. There is nothing spcctac about occupational disease in the n and so your main interest has been laws or in problems because people lye continued to be crippled and killed mechanical forces. There is no such [irect appeal with regard to occupa.al disease. Then along came the ipression with the effect of producing number of spurious cases, which rculted in a great burden being placed n industry in regard to the economic .tion. i addition to these factors there has cn a lack of general knowledge and ^-trained men in the field of occupa- al-disease difficulties. All these fachave resulted in the production of gies and unrest, hence the reason for lying the name of guesswork and hysteria to this period of evolution in upational diseases as the stage. SOur present experience may well be ;ened to the period of medieval hisIt is now believtsd that we have e somewhat past the bogy stage, it a swing to the factual and this ;e may well be called the stage of ity. As evidence of the swing to factual, last year occupational-discompensation legislation was in duced in more than forty states and ^Delivered before the Engineering Division, let Chicago Safety Council, Dec. 17, 1956. ({y, 1937 as a result of this activity a number of states have actually passed laws, includ ing Illinois. In this stage, when emphasis will be placed upon factual evidence, plant sur veys and studies have become more popular; examinations, including Xrays and clinical laboratory tests, have now come into use more widely. These devices will be used more and more to get facts in this stage of reality. The future, which overlaps somewhat upon the present and includes develop ments in the immediate offing, may well be likened to the period of modern his tory. This may be called the stage of progress. I predict that compensation for occupational-disease disability will be general in the United States within the next five years, that physical exam inations will become universal within the next ten years, and along with this will be an increased use of surveys and studies of industrial environment. As a practical outline of important sources of difficulty relating to occupa tional diseases, let us merely mention the following: 1. Dust (silica and asbestos-contain ing dusts). 2. Metals (lead, cadmium, chro mium, mercury, thallium). 3. Gases (carbon monoxide, sulphur dioxide, hydrogen sulphide, arsine, the nitrous group, cyanogen compounds). 4. Vapors and solvents (benzol and its hoinologues, the chlorinated hydro carbons, and others). 5. Skin irritants (soaps and cleansing powders, dyes, oils and greases, dusts and powders, solvents, agents of infec tion). This is not in any way to be con sidered an exhaustive list, but a number of the "high points" of importance have been picked as the chief possibilities or probabilities relating to occupational dis ease and these have been mentioned. It is significant in this connection that when the U. S. Public Health Service made a cross-sectional survey of in dustries and published its results in the year 1934, it was discovered that in order of frequency the chief exposures dusts, carbon monoxide, and lead. There are, of course, a number of others, but these are the chief types of exposure encountered in American in duslry and those which are likely to give difficulty. It is good to remember that this cross-sectional survey was made in ten different industries, embracing 615 plants and involving 28,000 em ployees. It has been well said that the best criterion of an occupational-disease haz ard is the occurrence of occupational disease; but none of us can afford to wait, I take it, for disease to occur. At this point it might be well to make a distinction between the two words ex posure and hazard, simply because, as the U. S. Public Health Service has pointed out, if a man is exposed to lead, carbon monoxide or to inorganic dusts, it does not mean that he is ex posed to a hazard. More must be known than the mere fact of exposure; wc must know the quality and quantity of exposure and then, when compared with criteria which have already been established in the production of disease, wc shall be able to say whether or not a real hazard exists. Remember that a hazard is always an exposure; an ex posure is not always a hazard. Here are some concrete suggestions which are boiled down to very brief expressions, but which contain the real essence of prevention of occupational disease: 1. Find out the exposure and the hazard in your plants. 2. Examine your men (before em ployment, during employment on haz ardous jobs, and at the time of discon tinuance of employment). The exam inations will be different for different types of exposure; obviously an exam ination for a dust occupation will not suffice for a lead occupation. 3. Correlate cause and effect factors from the information gained by scien tific study of the industrial environment and the medical data accruing from examinations and laboratory tests. 4. Control or eliminate the hazard, or furnish adequate protection for your men. Another way of stating the above suggestions forcibly is as follows: Man agement must \n o w its men, materials, methods, and machines. In summary, the occupational-disease situation has become a national ques tion; it involves socio-economic prob lems of tremendous significance; it pre sents difficulties no greater than any other industrial problem if the same amount of time, money and quality of brains are used, as have been applied in the past to similar industrial situ ations. 83 MA N (;A \ A L N ickel M a n g a n e s e S teel R eq . u . S. P a lent O lh c e Nos. 1.876,738, 1,947,167 a n d 2,021,945 W it h p rice s sky ro ck e tin g on ell typ e s o f e q u ip ment, you c a r avoid costly replacem ents by us ing M a n g a n a l A p p lic a to r Bars for rebuilding w orn-out m achine parts and keeping your old e q u ip m e n t in se rvice fo r ye ars to c o n e . Pum p shells, cru sh e r plates, d ip p e r teeth and sim ilar arts o f 1 I to 1 4 % m an gan e se steel can be aasi- fvy re c la im e d this w ay. U se M a n g a n a i W e d g e s for attaching to worn m anaganese and carbon steel shovel teeth to resist im pact and abrasion. SOLE PRODUCERS For Building Up For Hard Surfacing S T U L Z - S IC K L E S C O ., 134-142 Lafayette St., Newark, N . J. Index to Advertisers Allen Sherni.ui Hoff Co.............Inside Front Cover Goodyear Tire & Rubber Co........................... 2 Owen Bucket Co...................... 128 * Allis-Cluilnters Mfg. Co................................... 72 Gruendler Crusher & Pulv Co...................... 50 Parsons Engr Co..................... 1 1 3 American Manganese Steel C o ....................... 125 Halfis Mfg. Co,, G e o . . . , ..................................... 113 Page Engr. Co...................... 3-115 American Pulverizer f a ..................................... 183 Hardinge Co................................ 84 Pennsylvania milling Co......... 138 Bacon, Inc , Earle C ........................................ 112 Hnrdsocg Wonder Drill Co............................. 131 Philadelphian Hotel.... ............... isn Baker & G reenberg......................................... 135 Hrmitsclifeger Corp................. 64 Pioneer Grnsel Equip. Mfg. C o ....... 17 Baldwin Locomotive Works , ..................... 80 Hzaid Wh Rope Division of Ameiiean Productive Equipment Corp.............. 1 32 Barber-Greene Co............................................... 129 Chain & Cable Co.............Inside Back Cover Hendrick Mfg, Co............................................. 133 Quine Whe A Iron Works...............106 'B a rtle tt & Snow Co., C. 0 ............................... 133 Birmingham Rail & Locomotive Co................ 335 Hethcrington & Berner. Inc............................. 140 Railway Accessories Co.................. 134 rj +R1aw-Knox Co................. 105 Hoffman Bros. Drilling Co.......................... 138 "Raymond Pulverizer Dis. of Comlnislion Broadcast Section .....................................135-139 Holmes, Bohl , & Bros,, Inc............................. 131 Engr Co , Inc................... 38 Broderick & Basrom Rope Co................... 133 Howe Scale Co.............................................. 116 Rental Service Co..................... 137 *Bucyrus-Erie C o ............................... 22 Hug Co................................................................ 8 Republic Rubber Co ................ 1 2 1 Buffalo Scale Co................................................. 68 Hutnmcl-Foley Corp.......................................... 66 Robins Cnnveying Belt C o ............. 28 Burnham, Royal E ......................................... 138 Huron Industries C o ........................................... 132 Rock Bit Sales & Service. Inc......... ... 117 Burrell lSngr & Const. Co........................... 82 Hyinan-Mlchaels Co.......................................... 139 Roebling's Sons Co , John A .... 10-15 Cartiegle-IllUKils Steel ro rp ............................. 19 Caterpillar Tractor C o .................................... 4 Cement Mill EQulp. Co.................................... 58 Chain Belt Co............................................... 105 Chicago Perforating Co.............................. 113 Chicago Pneumatic 'fool C o ................... 74 Cincinnati Rubher Mfg. Co............................. 133 Cleveland Rock Drill Co................................ 23 Cleveland Wire Cloth & Mfg Co.................... 128 Consolidated Products C o ............................. 139 Delster Concentrator Co................................. 139 Delster Machine Co..................................... 1.29 DeWltt Hotels ................................................. 1S2 Dixie Miichy Mfg Co..................................... 82 Diacco Covp........................................................ 60 Dunn Mfg. Co , W. E .......................................106 Eagle Iron Works............................................... 129 Ensign-Bickford Co . . .................. 20 Equipment Corporation of America................ 135 Erie Puni]) & Engine Works........................... 133 Kxolfln Co............................................................. 130 Flexible Steel Lacing Co.................................... 181 Iowa Mfg. Co..................................................... 119 Independent Pneumatic Tool Co...................... 7 luget'soll-Ruriri C n ............................... 52 Jaeger Machine C o ............................. Bnck Cover Jeffrey Mrg. C o ................................................. 125 Kennedy-Van Saun Mfg. & Engr. Corp,, . . 76 Koehvlng Co.................................................. 118 Lane Co., T. J ...................... . . . . ..............135 Lesehen & Sons Rope Co., A............................. 114 Le Tourneau, Inc., It G............................... 70 Lewis, Harry C................................................... 137 Lewiston Foundry & Machine C o .................. 130 Lima Locomotive Works.................................... U Link-Belt Co...................................................... 1-191 Ludlow-Saylor Wire fn ............................ 40 Manitowoc Engr Works .................................. 62 Marietta Concrete C o r p .................................... 105 McLarmhan & Stone Corp ............................ 132 McLeod, Alex T...................... ............................. 138 Merrick Seale Mfg. Co................................... 78 Michigan Power Shovel Co............................... 127 Morris Machine Works................................... 80 Sauennan Bros.. Inc................... 128 Schaffer Pmiiomofer Co.................. 114 Simplicity Engr Co................... Ill 8KF Indus!ties. Inc ............... , 25 Hmidth Co.. V . L.................. 37 Smith Co , S. Morgan................. 127 Smith Engr Walks 26 Smith, 111c., L. B .....................197 Sprout, Waldron Si C a ................. 128 Stanhope, Inc., R, C................... 137 Slulz-Blckles C o ............... 14(1 Hlurtevnnt Mill C o ................... 42 Taylor Forge & Pipe Works. . 110 Thew Shovel Cn ........ 0 Tidewater Equip & Machy Cori).... ... 135 Timken Roller Bearing C o ............. 5 Traylor Engr Si Hf Co 39 Tyler Cn., W S............ . . . ISO Union Wire Rone Corp.......... .. .. 24 United States Steel. . . . . . . IB Universal Concrele Plpp C o .......... 104 Universal Crusher C o .................. 14 Fing Switch & Mfg. C o .................................. 108 "Fuller Co............................................................ 54 Gardner-Denver Co............................................ 123 Morse Bros. Machinery Co............................. 134 National Industrial Invest. C o r p ............. .. 139 National Supply f o .................................. 6 Walsh Co.. Richard P ................ 137 Warren Bros Roads C o ................ 108 Wellman Engr. Co..................... 130 Gar Wood Industries, In c .. . . ........... 123 National Wire Cloth Co.......................................117 Western Precipitation C o m ............ 58 *Genernl Elechlc Co........................................ 12-13 New Holland Mach in* Co................................. 109 Whitcomb Locomotive Co .. SO General Motors Corp........... .... 21 Nordberg Mfg. Co............................................... 139 Williams Patent Crusher & Pulverizer Co 78 'Good Roads Maohy Com ............................. 132 Northwest Engr. Co.......................................... 18 Williamsport Wire Hope Co ... 16 *See also in fo rm atio n in th e 1937 P it and Q uarry HANDBOOK BITUMINOUS PAVING M ACHINERY Cl! Bituminized Material Offers a New Outlet for Your Aggregate The H & B tower type plant combines portability and large capacity. Built b y manufacturers of asphalt paving machinery for over 30 years. S en d for o u r new b u lletin T-247 H ETH ERIN G T O N & BERNER, INC. ENGINEERS-- 'MANUFACTURERS INDIANAPOLIS, IND. 140 Pit and Quarry QUARRY CUTS AIR HOSE COST HERE is a typical example of the savings that can be made by having air hose indi vidually specified to the job by the G.T.M.-- Goodyear Technical Man. Air hose troubles used to be a pretty regular thing in the underground operations of the Hcumader Quarries Company, St. Joseph, Missouri. Constant dragging over the sharp rocks caused severe abrasion and rapid cover, wear. Lubricating oil passing through lit ,' lines caused the tif f iW d e f t- 8 |d flake, fre quently clogging the hammers and itttw the work. Several different makes. * r i were tried, hut the maximum service was only one year! I P Says " Style M " Noting these conditions carefully, the G.T.M. recommended that the quarry change to Goodyear Style M Air Drill Hose, 4-ply, and in May 1933, several lengths were put into service on the hammers. Today, over four years later, this hose is still in use and, as the photograph shows, it is far from worn out. In all this time there have been no shut downs and delays due to clogged tools, and the saving in replacements has reduced the compands air hose bill 75%. Couldn't you use savings like that? To give you similar economy on any type of job Goodyear makes five different types of air hose to fit every service requirement. The G.T.M. will be glad to recommend the proper type for your operation if you will write him, care of Goodyear, Akron, Ohio, or Los Angeles, California--or the jmTjTfc, nearest Goodyear Mechanical Rub ber Goods Distributor. FO R one who has used many engines, John Guerra is a man o f few words. But they pack a world of meaning! "Best engine I ever had," sums up the low operating cost of his 125-hp. "Caterpillar" Diesel Engine and the way it stands up under the heavy demands of his rock-crushing plant at River Drive and Strodman Road, St. Louis, Mo. With an output of 350 tons per 10-hour day, his fuel-and-lubrication cost is only thirty cents an hour -- 1 l/'6c a ton, or less than one-fourth the usual cost of other types of power. In 20 months of service, not a cent has been spent for repairs. And there are thousands of other actual instances, covering most every industry, which offer similar proof of the extraordinary economy of Diesel power as perfected by "Caterpillar." Ask the nearest dealer for details. Or, write us direct. S E V E N EN G IN E S I Z E S - 4 4 TO 160 HP. DIESEL ENGINES 'TIMKEN Bits meet every need The T IM K EN Rock Bit range includes types and sizes for every drilling condition that may be encountered. T IM K EN Bits are made in three different types-- cross, rose and chisel-- available with either center or side hole in ail required gauges. There is only one quality however, and that is the highest that can be produced. T IM K EN means as much in rock bits in this respect as it does in tapered roller bearings. To get this superior quality and the advantages that go with it-- including streamlined design, faster drill ing and more footage per bit-- you pay a little more for T IM K EN Bits-- but you will find them cheaper in the long run. If you are not using TIM K EN Bits you are losing a modern opportunity to reduce your drilling costs. W h y not give them a tryout now? W e are ready to conduct a demonstration whenever you say the word. THE TIMKEN ROLLER BEARING COMPANY, CANTON, OHIO Manufacturers of Timken Tapered Roller Bearings for automobiles, motor trucks, railroad cars and locomotives and ell kinds of Industrial machinery; Timkeni Alloy Steels end Carbon and Alloy Seamless Tubing; and Timken Rock Bits, TIMKEN ROCK BITS li*7 5 l* au.aa.inq a j^aszez a z iu is one tnina Mahing il so that it w ill stand np is anoth That's why [ngersoll-Rand pistons pass through 48 operations In their manufacture PIECE by piece the parts of a rock drill look simple and easy to make--but looks are deceiving. No other machine has to withstand the abuse of modern drills. Consider the piston of the DA-35 drifter; one end operates at a freezing temperature, the other, frequently at 250 F. It must deliver heavy blows, at the rate of about 2000 per minute (depending on conditions)--millions of these impacts during its lifetime. It receives 48 separate machining, testing and heat treating operations and is actually being worked on 55 hours in the course of its manufacture. During the last thirty years there has been a tenfold increase in drilling speed--the life span of parts has been lengthened-- dependability has grown progressively greater--upkeep costs have steadily decreased. Credit for this great improvement is due in a large measure to Ingersoll-Rand research and development. I-R PRODUCTS 'coolers eron Pum ps ers rx" Core D rills C om pressors Condensers Drill Steel& "d ack bits" Engines H oists Paving Breakers Pneum atic Tools Receivers, Air & G as Refrigeration Units Rock Drills Rock DrillAccessories Tie Tam pers Vacuum Pum ps 513.5 These numbers on a enable us to detersij exact batch of sis' which it was made, as all ofthe peitinesl concerning the fo machining, heat-tn inspection and test part. REASONS WHY THE DA-35 PISTON STANDS-UP / l | Metallurgical specifications for each piston v incorporate 60 years of accumulated ex. perience. % No steel for any other purpose whatever, is selected as carefully as the material that goes in rock drill pistons. Composition is controlled with unbelievable accuracy. Each batch must pass a physical inspection, chemi cal analysis and an elaborate haxdenability test before it leaves the mill. Proper heat-treating is a highly technical operation. The handling of this step in the manufacture of I-R drills is entrusted only to specially trained metallurgists. A correct design, highly skilled craftsmen v and a thoroughly modern plant and equip ment insure a superior product. Sixes are held to one-half of one-thousandth of an inch (.0005") variation. Every finished piston is tested in a specially developed magnetic testing machine, which gives -what we call "a mechanical X-ray", indicating the depth of hardness and the most minute variations from specified stand ards. Each lot of finished pistons is also given an actual runnino test on Rrtto nramhi it,r M o r r i s Hydraulic C olumn News of interest to Centrifugal Pump U s e rs WITH W H ITC O M B LOCOMOTIVES "Full o f Grit" . . . . T his M orris C e n trifu g a l P u m p is certain ly " f u ll of g r it"-- literally as w ell as figu rativ ely . T h e stam ina which has enabled it to operate w ith complete satisfac tio n on this difficult slu rry -h an d lin g service is ty p ical o f th e quality built into all Morris Pum ps. H ave you the Morris bulletins on pum ps for your requirements? I f n o t, be sure to w rite fo r copies. Efficiency curves should have plateaus-- not peaks . . . . If a centrifugal pump#has an efficiency curve th at drops off sharply fro m b oth sides o f th e m axim um , the slig h t I est change of pressure or capacity will cause a marked I loss o f efficiency. M orris Pum ps have fla t efficiency curves, w hich means th a t they m ay be operated over a range o f conditions w ith o u t m aterial decrease of effi ciency. I f you w ant centrifugal pumps w ith this help I fu l characteristic, be sure to get a Morris Q uotation. Bulletins on request. i F o r u u tfio rita tiv e re c o m m e n d atio n on an y p u m p in g nr dieduin.fi p ro b lem ., i rite to M o rris M a ch in o W o rk s, AeMirifisriZta, V. r . R e p re se n ta tiv e s in P rin cip a l C ities I Stop fighting ground resistance, road washouts, high up-keep cost of equipment, a n d extra m an power. Let one operator, with a Whitcomb Locomotive, haul more tonnage at one time than a whole fleet of individual haulage machines. Over half a century oi experience has proven the unequalled stam ina an d efficiency of Whitcomb Locomotives. They give you un interrupted service for more years with lower up-keep cost New methods make track moving or shifting faster, easier and cheaper than ever. Whitcomb Locomotives are sturdy, com pact m achines, properly balanced for rough, temporary tracks. They have plenty of power to move the load with speed and economy. Let our engineers survey your haulag e re quirements and estimate the savings you can m ake with Whitcomb equipment. A SIZE AND TYPE TO SUIT YOUR NEEDS Gasoline or Diesel Mechanical Drive Gasoline or Diesel Electric Drive Electric Storage Battery Electric Trolley Combination Trolley -- Storage Battery THE WHITCOMB LOCOMOTIVE COMPANY P la n t a t R o ch elle. Illinois S ubsidiary of The B aldw in locom otive W orks A ll stile s m a d e b y The B ald w in L ocom otive W orks. P asch al] S tatio n Post O Jiice. P h ila d e lp h ia , P e n n sy lv a n ia . e A e c u u j, I b u J y . ' jb w n p , ilo d i& l f o r flo c h a n d A ^ x y i^ a te A ^ and T44 TELESCOPIC HOISTS with PATENTED OUTSIDE M O U N T IN G S # 20 cu. yd. tide dump body, and M o d e l T44 tele scopic hoist. The body weighs approxlmately 14,000 lbs. A GARDNER-DENVER AIR COMPRESSOR An improved, accurately balanced compressor suit able for a wide variety of services. Made in all commercial sizes. Model T44 consists of two powerful telescopic hoists mounted in saddles in side or outside the truck frame. It is extensively used with big rock bodies such as the one opposite, to handle up to 25 tons. Rugged--built for heavy-duty, full-load service and continuous operation. Low power costs . . . electro pneumatic control auto matically controls current consumption in accord ance with air demand. Timken Tapered Adjustable Roller Bearings. Write for bulletin giving full details J Flqat of rock excavating unit!, with T44 holtll. This type of body can ba furn iihad with dow n-folding tailgate as shownj or with scoop end, G r WOOD INDUSTRIES, i n c 7924 R io p e lle S t. D etroit, M ich. W OR LD S LARGEST MANUFACTURER OF TRUCK EQUIPMENT Hoists, Bodies, Tanks, W inches and Cranes Also: Trailbuilders, Bulldoiers and Hydraulic Scrapers 1937 Sin ce 1859 GARDNER-DENVER COMPANY Quincy, Illinois GRRDRER-DEnVER 123