Document x5m8G05nNyzjvX4qE5ZppgMZE

wm riyycr D PLAINTIFF'S EXHIBIT DC-9 CONTENTS FOR THE MONTH OF SEPTEMBER, 1940 VOLUME 44, NO. 9 EDITORIAL STAFF Si*..- - : ARTHUR L RICE EDITORIAL DIRECTOR RALPH E. TURNER - EDITOR ANDREW W. KRAMER ELECTRICAL EDITOR RICHARD H. MORRIS ENGINEERING EDITOR Subscription price $2.00 a ysar in the United States and Possessions. Canada $2.75 a -year. Other countries $3.50 * year. Single copy current sue 25c: back issue 40c. Copyrighted 1940 by Tech,aca! Publishing Company. The Biggest Thing on Earth . . 50 With the Editors . .. .51 California Goes Modern ... .. ... 52 Maintaining Optimum Boiler Efficiency. By Parker A. Moe .................... 54 Red Tape--A Curse or Blessing. By George W. Dyson ................... 57 Auto Fleets Expense. By Randolph Whitfield............... .... ... ...................... . 59 Modern Furnace Design. By G. Campbell Kohlar......... ..... . ..................... 60 Work Schedules. By E. W. Robinson...................... ..................................... 63 Power Plant Operation Problems. By Richard W. Crain........................... 65 Engine Temperature Control By Recirculation and Mixing. By T. Napier Adlan ..... ........................--,,.... ............................. ................................ 68 Cable Care and Selection for Coal Handling............................... ............. 69 Turbine Governors Can't Talk. By R. W. McLaughlin................................. 71 Electric Power Load and Growth..................................................................... 75 Transformer Increase Capacity of Lighting Circuit.................................... . 77 Recent Developments In Compressed Air Circuit Breakers......................... 78 Motor Testing Simplified. By C. O. Von Dannenberg............................... 83 The Practical Engineer and Electrician............. . 85 'Round About With the Engineering Editor..... New Equipment ............ ........ ........................... 101 .102 News from the Field................ ........................ Coal Price Regulation...................................... Progress in Accident Prevention.. ........ ........ Illinois Institute of Technology Eilects Officers. Nickel in the Electrical Field............................ Stevens Management Conference..................... For the Engineer's Library................................. New Engineering Books ................................. . Power Plant Construction News......................... .110 124 .126 .128 .130 .132 .136 .139 .140 Contents of back issuas of Power Plant Engineering will be found in Industrial Arts Index on file in Public Libraries. PUBLISHED MONTHLY BY TECHNICAL PUBLISHING CO. KINGSLEY L RICE President ARTHUR L RICE Treasurer EDWIN C. PROUTY Vice President WALTER PAINTER Vice President CHARLES S. CLARKE Secretary PUBLICATION OFFICE, S3 W. JACKSON BLVD. _ CHICAGO. ILLINOIS ADVERTISING REPRESENTATIVES CHICAGO: Cb.He. S. Clarke 53 W. Jackson Blvd, Chicago. 111. PHILADELPHIA: H. G. Wild* 500 W. Clapier St.. Ph.ladelph.a, Pa. NEW YORK: John A. Kershaw Graybar Bldg, New York. N. Y. CLEVELAND: Gaorga E. Andrews 11733 Edgawater Dr, Ukawood. O. 49 Portable Cutting Machine The Harms C.m.orific Co., Cleveland. O., announce a new and improved Model K portable, motor-driven gas cutting, machine. . . Air Hose for Hot Oil Service Recommended for use where excessive hot oil conditions are encountered, The B. F. Goodrich Co., Akron, Ohio, an nounces the addition of a new air hose made with a snythetic tube and rubber cover. It is known as Type 54. Laboratory tests indicate that the syn thetic tube used in this construction should give two to three times longer service life when exposed to the same conditions as a tube made of natural rub ber. The hose is built with a smooth green abrasion resistant cover. Oil Pressure Unit .- _ A new compact oil pressure unit de signed for circulating lubricating oil at a predetermined uniform pressure througi lantern glands of sturnng boxes, th.-ouei large bearings, and for supplying oil la hydraulic equipment, heat treating sys tems or where there is the problem cd circulating or supplying oil at a unitor-- pressure, is announced by the Durametnlic Corporation, 2104 Factory Stre-- Kalamasoo,_ Michigan. This Oil Purest sure Unit features a manual type regu lator to provide a circulation up to lOSW Tlie Model K i- powered by a Uni versal Electric Motor and will cut straight lines ui any Ivnviih. \vith square i*r bev- elcii c<i.iv> I 3 t* N> in. i!iam. virvlc? \vi:: standard equipment: ; ** a spec* rairee from n on ;n. per n*.:::. : .ruart or reverse. -\:i in.-huit texture per mits cutting uf sharp a Tvalc>. ar.u a mg feature provide? tor cutting irregular form.-. Mounting for 2 torches is pro vided. It weighs 45 lbs. complete with torch, - Many different Harris torches are available for this machine to cmcier.tly use acetylene, propane, natural gas and other fuel ga-vs iti comhinati- n with oxygen. . Insulating Block B-Il MmN'i-IjLuck i> the "aiue ui a new insulating block developed by Baidwin-Hill Co.. 577 Klagg Avenue. Trento:;. X. .1., and suitable for a full ranee of temperatures up to lnmi deg. F. It is fabricated of ll-li Black Rockwool, felted and bonded together to form a semi-hard block that is light in weight, easily cut and luted around equipment having curved -uriaci- of large rail:; as well as lint surface-. It i< cspcviallv .s inpted to Is 'la r wall-, bn-t s luuus. iluet tanks, tow rr- at. i -imtlar hot iuiipna;-,t and is Transfer Screw and Punch Sei A new method for transferring screw and stuil holes as well as blind drii! holes from a drilled surface to another that is to be drilled in duplicate has been per fected iti the XeiLen transfer screw and punch sets now available from Xeilsen l oul & Die Company. Berkcly,- Mich I.a;.'.in punches are made t.i tran-fer drili lb. pressure, a cooling coil of scantiest copper tubing, an oil filter, pressure pump, explosion-proof electric motor, cast im base, vapor-pruof lid, oil tank vent, mi level gage and pressure gage. Unit ,-upplied complete or as a motor-pump as sembly . Flashlight Extension This device known as the Sierra Flashlight Bulb Extension, is made S* the Sierra Aircraft Co., Sierra hladm. Cal., of special wire encased in high-grade aluminum alloy tubing, to aid in maim* close inspections. The extension Lib holes through a drilled section in diam eters from 17/o4 to 59,04 in. The punch is made with a case hardened tip that is removable tor replacement and, when a solid blow is struck on the punch head, will transfer the drill center and drii! circle with Complete accuracy. Center, and drill circle, penetrate steel to a dept:: fit UU1U in. Transfer screws are made with a shoulder support of uniform height enabling holes of various sizes to he tran.-ierrul in the same plane at one im press'' hi. made in lengttt- H orn to .in w ni::is i r..11 r, t.. 12 in. ,md :hiekn'e--e- from. 1 4 nt, To facilitate nppiuv.thn of this hi*k k. it i- adsistdile 1o use i'.-H Boial- I He. a highK cMicictit adhesive that holds lire block in place against the surface Uing insulated and is cUeetivc in sealing |u.i,.u- -nrf.u'e-. Gasket A Ni.w kind ot gasket which ciiihudira romiiinaii'.n of the desirable properties "I a.-he-tus and neoprene has been intro duced by Victor Manufacturing & Gasket Co. of Detroit, Mich. The gaskets are made !w a new process which Jesuits in an smirch ditteieut type of product from the u - tin 1 rtildier or neoprene bound asbe.-to- compo.iiioii r-.tumonly known as super-heat packing. These new gaskets are not supplied in sheet form. In tile manufacturing process they arc first blanked from asbestos sheet material. Then the gasket is coated with a neo prene cement develujicd especially to in crease its resistance to the passage of gases and liquids. ,, o to ou u mtu any flaassmh*l*i*g**h'.t-~^ can go dwnJ)?E*i<*2: t'l-ins or arounnd coonrvnert*. ui-|,ect"rs CcacUni Mo Us own **--v--i t.ha. t1 -