Document 8Ovm1DEDwd9r715za3L9aZK

St. Louis Public Library t i ST M POUER 1 10 W` VOL 10 PTI POOER P0B.1 P POWER A104654 TbU Boole Shall Not Be Taken gto The Llbrurr >:f f&\-r:t r "x. / .5AN ' f)6 ! 16 tc, ;W /?m i1 .y> V *. * , \.#, . ' '. Central-station survey reveals design plans and construction progress in utility expansion pro gram rivalling that of the late Twenties. Trend is toward con_ densing units operating at mod erately high pressures - 700 to 900 psi--and high temperatures -- 850 F and up. For a stationby-station roundup, see article beginning on page 64 - <5 Gas-diesel principle now. ap plied to supercharged 4-cycle, units and to 2-cyde engines. Re portion development makes spe-\ cial reference to performance, valving, fuel injection and con trol ijngthods. Turn to page' 71 /* 8 % ... < Forming the heart of most gos- iffte power units, axial-flow- compressors like ' this jet-pro-jj pulsion 'element are much in. the day's technical. news. See ar ticles on page 81 'and page 103 . \ ` +'1 { * Back and front views, at our plant, of Metermax Combustion Control section of a complete L&N boiler gauge board for Pic way Station, Columbus & Southern Ohio Electric Co. Right--Two-boiler L&N Control Board installed at Wcstover Sta tion, New York State Electric & Gas Corp. The PLUS VALUES OF PANEL ENGINEERING Give Better Power Plant Control Panels engineered by L&N have every detail arranged to make the unit as useful as possible to the power plant's personnel. All Control lers and instruments--all gauges, dials and meters--all start-stop sta tions, switches and signal lights--are in proper sequence for conven ient operation. Lighting is bright, level, glareless. Back-of-panel arrangement is exceptionally convenient. Panels show our ten years of experience in supplying complete units to meet the problems of power plants. These Panels arrive with Metermax (or Type P) Combustion Controllers and/or Micromax instruments installed. Major equip ment items which we do not make-can be supplied qr not, but the entire-PanVv.dov/n to the last wire, is connected and checked. Either with-the Panel or ahead of it we send complete structural and wiring blueprints,, which-greatly reduce the recipient's engineering and draft ing work: .The 'Panel -as received is ready to install. Further information, will be sent on request. Labelled in Russian, this is one of eight boiler boards shipped as shown to U.S.S.R. Metermax Controllers and Micromax In struments are mounted. Wiring for sep arately-shipped equipment can be seen, cabled and tagged, in cut-outs. LEEDS & NORTHRUP COMPANY, 4910 STENTON AVE., PH I LA. 44, PA. LEEDS & NORTHRUP MEASURING INSTRUMENTS Jrl. Ad NU52(2) TELEMETERS AUTOMATIC CONTROLS HEAT-TREATING FURNACES POWER (with which arc consolidated "Science and Industry," "The Engineer Review," "The Engineer," and "The Stationery Engineer"), January. 19 Vo). 90, No. I. Published monthly with an additional Directory number In December. McGraw*Hllt Publishing Company, Inc. Publications office, 99*129 Noi Broadway, Albany I, N. Y-. Editorial and executive officer, 320 Wait 42nd Street, New York 18. N. Y. Entered as second class matter August 25, 1934. Albany, N. Y., under the act of March J, 1879. Printed In U. S. A. Allow at least tan days for change of address. All communications about subscripts should be addressed to tha Director of Circulation, Power, 330 Wost 42nd Street, New York 16, N. Y. Subscription rates--U. S. and U. S. Possessions, |3 for one year, $4.00 for two years. Canada, $3.50 for one year, $5.00 for two years. All other countries $4,00 for one year, $9.00 for two yean, 35c par copy PIWH A McGRAW-HILL PUBLICATION N O WYNKOOP, Publisher P W SWAIN, Editor L N ROWLEY. Monogfng Editor Associate Editor*! F A ANNETT E W FELLER Assistant Editors: BOA SKROTZKI J L KINO J C MeCABfi C F SANDERS Art Editor: C F MARSCHALEK Business Monoger: B E SAWYER Washington: D D Hogarte Lot Angeles: S J Strickland London: S A Tockor lier. <0X1,0 b ; ;. JANUARY, 1946 VOLUME 90, NUMBER 1 A CROSS-INDEX OF SUBJECTS FOR THE MONTH FEATURE ARTICLES Centra! station capacity continue! expansion................................. Man-made wind at 130 to --67 F tests gasoline injectors............... 64 68 Gas-diesel principle for supercharged and 2-cycle engines........... 71 USSR to double power by 1950 ........................................................ 76 How axial thrust is balanced in single-stage centrifugals............... 78 The thumping waterwheel generator ................................................. 80 Axial-flow design makes possible light aircraft gas turbines........... 81 Long Island Lighting completes Glenwood station.......................... 82 Use solar energy at USSR Tashkent plant......................................... 85 Antifriction bearings change sliding friction to rolling................... 86 Treating to prevent scale introduces carryover problem............... 88 Short cuts to plant efficiency: No. I--What steam pressure?......... 92 Storing and handling methods that keep good oil good................... 95 Closed-cycle gas turbine looks to further development............... 103 THE OPERATING ENGINEER Inward boiler bulges merit practical attention................................ Metalixing gives turbine new lease on life......................................... 107 109 Practical aids ........................... 110 Feedwaterquestion box .... 122 Reader's problems.................. 114 Math tips............................. 124 Centrifugal pump Q&A .... 118 'How to--'............................ 126 OTHER DEPARTMENTS The reader's argument corner............................................................ New equipment . .. ................. 130 Data sheet........................... Power news............................... 134 George Edwards................. Cover photo, courtsty Westinghoute Electric Corp. 128 138 140 VOLUME 90. NUMBER 1 ABC ABP COPYRIGHT 1946 By McGRAW*HlLl PUBLISHING CO., INC. # ALL RIGHTS RESERVED James H MeGraw, Founder and Honorary Chairman: Jamas H McGrow, Jr. President; Curtis W McGraw, Sonlor Vice-Prosidont and Treasurer; Howard Ehrlich, VIca*Praiidant . (for business operations): Willard Chavallar, Vice-President (editorial operations); Joseph A Garardi Secretary J Blackburn Jr Vlce-Preftidant (lor circulation operations) OISTRICT MANAGERS: New York. W W Quarles; Philadelphia, C R Long: Cleveland F B Godley; Chicago C Boughton; Boston, C L Morton; St. Louis, G G Sears PUBLICATION OFFICE: 99*12) Broadway, Albany I, N Y. EDITORIAL AND EXECUTIVE OFFICE* 330 W4)nd St. New York IB. N. Y. Cable Address: "McGrawhiM New York** DISTRICT OFFICES: 520 N Michigan Ave. Chicago II, 68 Post St. San Francisco 4; National Press Bldg, Washington 4; 16 S Broad St. Philadelphia 2; 733*9 Oliver Bldg, Pittsburgh 22; 1510 Hanna Bldg, Cleveland 15; 2980 Panobseot Bldg, Detroit 26; Continental Bldg, St. Louis B; 1427 Statlar Bldg, Boston 16; 1011 Rhodes*Heverry Bldg, Atlanta 3; Pacific Finance Bldg, Los Angelas 14; Aldwycn House, Aidwych, Londomn WC2 POWER articles aro indexed In both the Industrial Arts and the Engineering Index POWER issues its own Index annually 59 The Manual starter built on the premise all motors deserve equal protection Although the Cutler-Hammer 9115 for motors that can be manually start! same design, construction and operate lures that have made Cutler-Hammer M' Starters o standard wherever electric motor? used. Here you will find the same "drop-ol solder" eutectic alloy overload relay that distin guishes the Cutler-Hammer Magnetic Starter line ... the same twin-break Vertical dust-safe con tacts ... the same pure, fine silver contact faces... the same snap action contact mechanism ... the some simple design ... the same dependability ... the same attractive, clean styling. Only in the absence of the electro-magnetic closing mechan ism is there any difference at all. Every motor in your plant no matter how small or "unimportant" has an essential role to play in production. Every motor deserves equal core and protection. Every manually started motor deserves this degree of protection. Yet C-H 9115 costs no more than ordi nary starters. CUTLER-HAMMER, Inc., 1358 St. Paul Ave., Milwaukee 1, Wisconsin. Associate: Canadian Cutler-Hammer, Ltd., Toronto, Ont. CUTLER'M Ml ItfER CASE--Modm styling and dntgn. Standard NEMA type 1 enclosure. 8 x 4% x 4, Jopanned steal. Interior light finish for high visibility. Cover con be padlocked. Knockouts top and bot loin. Ample spaces complete accessi bility.. OPERATING MECHANISM-Avoll- able os skeleton lot .building Into mo* chines, etc. Metal parte rust-proof. Rub> ber mounting absorbs shocks. Meehan* bm removable as a cult by loosening one screw--lor wiring, etc. Parts and .'hnolnols easily accessible. ' '' COVER--"Hook-on" type. Loosen* POWER * January* 1946 tng one ecrew permits lilting off from front. Permits close-fit Installation. CONTACT STRUCTURE--Newly de signed lor compactness, simplicity, strength and accessibility. Unit base construction easily removed. Positive, qu1ck*mako, quick-break, twin-break ill* ver4o*slhrer contacts mounted on unit OVERLOAD RELAY-Famous C*H eutectic alloy thermal overload relay, most dependable known. Reset bv push* Ing top button. Free-tripping, Rating changed by chongfng heater calk PUSH BUTTON OPERATION--An achievement lor this type of starter. Has start, stop*and-overioad reset buttons. Start button con be locked to prevent unauthorised operation. DETAILS--As further evidence of the extreme core end thought In designing this new starter, your attention Is colled to numerous small yet Important details such as sell'finding terming! satwt, unique staking ol coves screw, bendy spring lifters on movable contacts, etc., etc. 119 'f .r ? ' ..V . S' toaattattiJi Cascade will be managed by Clyde A Retter. This firm will also act as distributors for Fairbanks-Morse electrical equipment. - Kennedy-Van Saun Manufacturing & Engineering Corp appoints Edwin A Wert general manager of Southwest region, made up of Aris., Calif., Colo., Utah and N. M. Wlckwlre Spencer Steel Div, Colorado Fuel & Iron Corp, made Herbert D Rollo sales manager for New England District. Bnebarach Industrial Instrument Co, Pittsburgh, purchased the Practical Instru ment Co of Chicago. Portable temperature, humidity and operation recorders formerly made by Practical Instrument Co will now be manufactured in the Bacharach plant. Production equipment and other physical property of the purchased company is being transferred from Chicago to Pittsburgh. Swartwout Co established a new Chicago office to serve steam power-plant equipment customers. H P DeHart is in charge of this office at 120 S La Salle St, Chicago. Swart wout ventilator sales in Chicago area' con tinue under L V Warner at 549 Randolph St. 784 8. SwMton 8L. Phlladilphtt 47, Pa. In Canada. Canadian Botflnld Rtfrtetorlw Co.. Ltd., 171- iMUra Amy*, Toronto COMING IN 1946- These Informative, vital special sections, publlihed every other month In POWER: Feb.-- Magnetic Drives April--.Pressure and Temper ature Controls June-- Analysis of Power Trends. To include vital postwar statis tics . Sept.--Gas Turbines. Dec.-- Boilers To keep abreast at engineer ing developments as they happen, read: POWER A McGraw-Hill Publication 330 West 42nd St. . N.w York 18. N. Y. Briggs Filtration Co acquires Briggs Clari fier Co. Officers ol the new company, all of whom served with the old. company, are Chase Donaldson, president; S W Briggs, vice-president; R C Zschiegner, treasurer; W. E. Furey, secretary-counsel; Cecil Hop kins, assistant secretary. Directors are Chase Donaldson, president; S W Briggs, vice-presi dent;- Richard P Dunn, partner, Auchincloss, Parker & Redpath; Bradley I Gaylord, vice president, Pennroad Corp, Wilmington, Del; Clark W McKnight, Wilmington, Del. Weston Electrical Instrument Corp ap points Harold L Olesen as general sales manager. H L Gerstenberger, who formerly served in that capacity, continues as vice president in charge of sales. Howard M Cutshaw has been made assistant sales manager and Thomas A Marsh man ager of corporation sales of Iron Fireman Manufacturing Co. Mr. Marsh succeeds Karl Saboe, who recently transferred to St. Louis as branch manager. . Announcement was made recently of election of Fred A Jackie, works manager of Chase metal works and Chase rolling mill plants, as a vice-president of Chase Brass & Cop per Co. He will act as a special consultant on the staff of Richard D Ely, vice-president in charge of production. Walter L Smith has been promoted to works manager of metal works and rolling mill plants in Waterbury. Fisher Governor Co announces appoint ment of Puffer-Sweiven Co as its exclusive representative in Texas Gulf Coast area. Culler-Hammer Inc announces the election of E U Lassen as assistant chief engineer. Eshelman & Poller appointed G S Myers a member of the chemical engineering staff. As service engineer, Mr. Myers' work will involve both Hagan combustion control and Hall Laboratories water conditioning in Southern areas, including the marine field. 200 (72b) * i::4;' m ously, the alternator remaining inactm For reverse direction of the drive, I' dc' winding of the induction motorJ disconnected, the alternator's field ej|| cited and its windings connected to'lgl ac winding on the induction motoitl rotor. Current from the alternator'?! 15 Oldgrem of rovenibla mognetfc drive fhof Includox a fynchronovt affernatora/id on Induction motor, ai shown In 16, The motor has two distributed field windings generated at a frequency that produij a rotating magnetic field in the indiiej tion motor's rotor of twice the speed;"* the ifiput shaft and in the opposite rection. This is necessary for revi rotation, since mechanically the oul member of the magnetic coupling off tinues to rotate at input speed. A reveh magnetic field of twice input speed in posed on this motion then results inp . reversed field of normal speed so thj the output shaft runs at normal spc& in reverse direction. | REVERSIBLE DRIVES A cross-section of a reversible mag netic drive described in Engineering (London) Oct. 17, 1941, is shown in Fig. 16. It consists of an alternator and a magnetic coupling, the equivalent of an induction motor. The alternator's field poles P and the rotor R of the induc tion motor are fixed to the input shaft. The alternator's stator is supported in a frame bolted to the unit's bedplate. Field core and windings IV for the in duction motor are mounted on a spider keyed to the output shaft. This core is slotted on its outer periphery and has ACKNOWLEDGMENTS two 3-phase star-connected windings. For one direction of rotation one wind ing is excited by dc, and for the other direction the other winding is excited by 3-phase ac, as indicated in Fig. 15. For the output shaft to operate in the same direction as the input one, and at practically the same speed, the power unit is started and brought up to about half speed. Then, excitation is applied to the magnetic drive's dc winding, which produces magnetic poles in core IV as with a salient-pole winding. As the squirrel-cage winding in core R rotates through the magnetic field, current is generated in it that reacts on the latter to produce torque as in an induction motor. This torque accelerates the out put shaft in the same direction and up to about the same speed as the input shaft. In this direction of rotation, oper ation is the same as for the other 2element magnetic drives described previ If the outer member connected to thj input shaft has ten poles and is driiio at 300 rpm when excited with dc, it proj duces a 25-cycle forward-rotating mat netic field. To generate a correspondini field in reverse direction it is necessarj to apply a 50-cycle rotating magntdj field in relation to the outer memSu However, owing to the forward ratafia of the outer member, the over-all effeg relative to the rotor is a 25-cycle revere field and a corresponding speed. Mechanically the coupling elemuitr may be arranged in different ways. For simplicity the alternator has been shown, separate from the magnetic coupling but a commoner arrangement is a com bination of the two in a single unit. This1, drive may be considered as a normal? magnetic coupling in which an alternator; on the input shaft supplies an induction motor on the output shaft. However,; it has the advantage that the alternator; is seldom used, and is idle during lor-j| ward rotation of the propeller. There-! fore it can be rated on a short-time bash: and be considerably smaller than for the; usual continuous-duty electric drive, In preparing material on mag netic clutches Power Is Indebted to Cutler-Hammer Inc, pings Magnetic Separator Co, Stearns Magnetic Mlg Co, all of Milwau kee, WIs.; and to Twin-Disc Clutch Co, Racine, WIs. Material from which tho elec tric-coupling and magnetic-drive articles wore written was sup plied by Dynamatlc Carp, Keno sha, . WIs.) Electric Machinery Mfg Co, Minneapolis, Minn.; Elliott Co, Rldgway, Pa.; Gen eral Electric Co, Schenectady, N. Y.; and Westlnghouse .Electric ' Corp, East Pittsburgh, Pa. 'A/ternaloti sjo>Sr,\ ,Three^phcse>. "'"'jy.Maqmhc driver^ * 86 1961 TOWER Febrvory lWifi C. H. WHEELER OF PHILADELPHIA STEAM CONDENSERS . ' ' AIR EJECTORS MECHANICAL DRAFT COOLING TOWERS Harvey T Hill was reelected executive direc tor. New directors who were elected are A W McKinney, vice-president of National Supply Co, and G F Twist, vice-president and general manager of Atlas Imperial Diesel Engine Co. Continuing on board of directors are George W Codrington, vice-president of General Motors Corp; Charles E Brinley, chairman of board, Baldwin Locomotive Works; Robert E Friend, president of Nordberg Mfg Co; Norris H Schwenk, president of Busch-Sulzer Bros-Diesel Engine Co; Mr Schwanhausser, Mr Morse and Mr Lefebvre. United Engineers & Constructors Inc elected Charles W E Clarke vice-president and consulting engineer, Stanley C Cook vice-president and construction manager, Ben jamin S Thayer, vice-president and construc tion manager. . DECK MACHINERY F A Wright has been named as chairman oi Industrial Control Section of National Elec trical Manufacturers Association. Mr Wright is assistant general sales manager of Cutler-Hammer, Inc. C. H. WHEELER MANUFACTURING Co. 19th St. & Lehigh Ave. Philadelphia 32, Pa. For further Information, writ# (of catalog M27-P * /MO ' >UMP DIVISION Of I HC DElAVAL STEA'M TURBINE CO. INI N ION J, NtW JINJir Prof Marcel K Newman has been appointed associate -professor of mechanical engineering in College of Applied Science, Syracuse University, Syracuse, N. Y. OBITUARIES Ceorge Bridges, 58, pump application engi neer and an employe for 40 years of Worth ington Pump & Machinery Corp, died Dec 19 at his residence in Nutley, N. J. . Alan Estes Flowers, 69, head of research and development dept of De Laval Separator Co, died on Dec 3 in Vassar Hospital, Pough keepsie, N. Y. Charles C Hall, 70, founder and vice-presi dent of Durametallic Corp, Kalamazoo, Mich., died at his home Dec 26. Ceorge ,W MacDow, 59, president and treas urer of Norwood Engineering Co, died at Brookline,. Mass., on Dec 9. . William Price Macdonald, 53, manager at Nanaimo, B. C., for British Columbia -Power Commission, died at his home there Nov 30. Frank C Angle,.45, manager of general ma chinery div field sales offices, Allis-Chalmers Mfg Co, Milwaukee, died recently after an illness of several months. C Harold Wheeler Jr, 63, vice-president and general manager of C H Wheeler Manu facturing Co, died at the Presbyterian Hos pital, Philadelphia, on Nov. 24. J E Aldred, 82, one of the pioneers in field of hydroelectric development, died on Nov 21 at the Garden City Hotel, Garden City, L. I., N. Y., where he lived.. David S Boyden, 72, former superintendent of steam-heating dept of Boston Edison Co, died at St. Petersburg, Fla., on Nov. 26. He retired from Boston Edison Co in 1939 after 31 years on its stall. James A Moyer, 70, for many years promi nent in engineering educational activities, for 29 years director oi the university exten sion div in Mass., died at Newton, Mass., on Dec. 1. Since his retirement he had been engaged in preparing a volume on high speed diesel engines. 206 (144a) The interior* of metal, wood and con crete tanks, refrigeration lines, and underground pipes ond tonks moy no be protected against corrosion, dcteriorotion or fungus growth by Sovcrite Interior Boiler ond Tank Coot. This 'scientifically prepored coating hewer dries hard; it remains flexible and cipands ond contracts with tom poroture chonges, thus eliminating the hair-line cracks under which rust forms. It is resistant-to acids, brines and caustics, is not affected by feed water treatment In- boilers. It is odorless ond free from, donyerous gmos. One ap plication covers 125 sejuore feet, applied'at "tissue paper" thickness. For further information, fill in coupon and send to S a ve rite ENGINEERING COMPANY -1030 Willow Avenue 5000 So. Hoover Street - Hoboken.' N. J. \ Lot Angeles 44, Colil. SAVERITEENOmUtmOCOM^r Vwillow MM* HeboVtu, B. J- T..k ..So,,,U.. ' name. aodressCITY- 5TA7E- POWER February 1944 J! t I I Denshooth Internal wiring give* eiceptlon- ally workmanlike appearance. From the handsome modem cover to the beautifully finished light Interior, advanced design Is vied throughout. Case has solid bach. Mechanism rubber mounted on dead-bock panel. . . The OH 9586 Starter Is available In all standard conitrudtons, with or without pushbuttons In case, with transfer switch. In combination starter, and In skeleton construction for built-in application. J! J i i j t Denihooth Internol wiring fllvet eiceptlon* oily workmanlike appearance. From ISo handsome modom cover lo iho beautifully finished light Interio#, odvanced design it used throughout. Goto hot tolld bock. Mechanism rubber mounted on deadlock panel. . The C*H 9586 Storter It ovolloble In all standard constructions, with o# wlthoot pushbuttons In case, with tronsfei switch. In combination startor, and In skeleton construction lor bulIMn application. i .'ationil 'UstionT mm. Fig. 4--New boiler's meter panel on which are mounted meters for recording steam flow and air flow; steam, combuatlon-alr, flue-gas and feedwater tem peratures; Indicating draft pressure at five points In furnace, boiler and economizer; and for recording feed water level In boiler to guide operator other schedule con be selected on the control if desired, to suit operation. Duplex drives are provided on the i stoker, s 4-speed squirrel-cage motor and i constant-speed induction motor with a tsriable-speed transmission. Each con nects to the stoker-drive shaft by a roller chain and sprockets. Normally the in duction motor through the variablespeed transmission drives the stoker be cause it gives better speed control. By using forced- and induced-draft fans on the boiler the plant's original stack has ample capacity for the in creased load. These fans are driven by constant-speed motors, stoker draft be ing controlled manually by dampers in the stoker and extension-grate windbox connections. Furnace pressure is regu lated by automatic control that positions the uptake damper between the induced- draft fan and breeching.' ' Outside of furnace-draft control, auto matic control was not provided becauhd - normally the boiler will supply a base load of about 100,000 lb of steam per hour. However, in the boiler and its combustion equipment,'' provisions have been made for the installation of auto matic combustion control if this becomes desirable. About 60% of the boiler's feedwater is condensate return and 40% raw river water filtered through sand with no treat ment. Condensate and makeup mix in a 300,000-lb-per-hr deaerating feedwater heater, are heated to 212 F and pumped (Continued on page 138) 1946 PRINCIPAL STEAM AND ELECTRICAL EQUIPMENT Boiler-Plant Extension of E B Eddy Co Consulting Engineers: Hardy S Ferguson & Co BOILER AND AUXILIARIES: /Biller ....................................................... Babcock*Wilcox ft Ooldie-McCulloch . Boiler; 2-drura bent-tube Integral furnace; watorwallo made up of bare tuba*, itud tubes and Bailey blocks; 12,297 aq ft of heating aurfaee in boiler and waterwalls; eeonomiaer; 3720 aq ft of water-heating surface; rated steamlog capacity 100,000 lb per hr, continuous; 460-psl design pressure, 175*psl operating pressure at superheater outlet; 5800 cu ft furnace volume; 25,000 Btu maximum heat release per cu ft per hr; tuperbnftf dralnoble, 130-F superheat, S08-F total steam temperature Boiler refractories....................................Babcock-WUcox ft Goldie-McCulloch Ash getes ................................................................................................ Link-Belt Co BoQer steel casing, ducts, branchings.. Babcock-WUcox ft QoldiwMcCulloch COMBUSTION EQUIPMENT: Stoker............................................................................. American Engineering Co Taylor, watereooled', underfeed, 17 ft, S% in. wide by 16 ft, 8 in. long; 10 retorts; 45 tuyeres; actual grate area, 318 sq ft; projected grate area, 216 tq ft; combustion rate, 10,400 lb per hr Stoker multispeed-motor drive................................................ Lincoln Electric Co Totally inclosed, 5 hp, 440 v, 450 to 1200 rpm, squirrel cage Motor control, remote............................................................. Cutler-Hammer, Inc gtoker motor on varloble-speed drive...................Canadian General BJec Co Totally inclosed, 5 hp, 440 v, 1160 rpm, squirrel cage Motor-starter pushbutton...................................... Canadian Qeneral Electric Co Bxteaaion-grate hydraulic dump........................... Logansport Machine Works Bitene(on*grate dump control.....................................................Eagle Sign Corp Pomp motor on grate dump............. .................. Canadian General Electric Co Totally inclosed, 3 hp, 440 v, 1160 rpm, squirrel cage . Motor starter, remote pushbutton......................Canadian General Electric Co Isfety switches on stoker motors.................................................... 8quate D Co pomace pressure regulator.............I..................................................AW Cash Co Rorttd-draft fan, vane control........................................................... Sheldons, Ltd Motor driven, 49,000 lb per hr st 5.25-in. wg and 100 P Forced-draft fan motor.....................................1 Canadian General Electric Co TottUy inclosed, 100 hp, 1150 rpm, 440 v, squirrel cage Induced-draft fan.................................................... Sheldons, Ltd One, 200,000 Jb per hr, 7.4 wg at 425 P........... ...........-........................... Induced-draft fan motor.......................................Canadian Oeneral Electric Co Totally inclosed, 12S hp, 1160 rpm, 440 v, squirrel cage Motor starters, pushbutton................................... Canadian General Electric Co Safety switches.......................................................................................8qusro D Co VALVES, PIPING AND TPAPS: . Safety valves, Consolidated....................................Manning, Maxwell ft Moors Nonreturn valves.................................. -.Crane, Ltd Blowdown valves..................................................................... Edward Valves, Inc .Drain valves.......................... Crane, Ltd Hlgh-preasure valves....................................................................................Crane Ltd Feedwater valves........................................................................Edward Valves, Inc Piping insulation............................. ...................................Insulation Products Co Traps ...................................................................................................Trebles Mfg Co FEEDWATER SYSTEM: Feedwater chemists........................................................... W H and L D Beta Co Feedwater acid pumps........................................................... Milton Roy Pump Co Acid-feeder control................................................ Canadian General Electric Co Feedwater beater (Cochrane)...................................... Canadian Allla-Cbalmers Deaerating, 300,000 lb per hr, from 63 to 212 F Feedwater automatic controls (Copes)........................................ ..Peacock Bros Excess-pressure regulator (Copes)..................... ............................. Pescock Bros Water columns..................................................... ...................... Diamond Specialty Feed pumps, 2.......................................... Babcock-WUcox ft Ooldie-McCulloch One, turbine driven, 225,000 lb per hr, 350 psi One, motor driven, 150,000 lb per hr, 100 ptl (standby) METERS; Boiler meter and control panel................. ................................... Bailey Meter Co , Boiler meter (ateam-flow air-flow), steam temperature and pressure re corders, flue-gas temperature recorders, 5-point draft gage and feedwater- level recorder,,.............................................................................. Bailey Meter Co Steam-pressure gage................................................ Manning, Maxwell ft Moore Hydraulic-pressure gage......................... ........................................U. 8. Gauge Co POWER May 1946 (289) 67 , tai H' 1 u A ' X ' if Reinforced iletfonory contact jawi hove heavy norvferrom dtps ^ for permanent contact prenure. Withstand 900 F operating tem peratures. Current* carrying pigtail goal around hinge to that loiter corrlet no cur* rent. A feature promoting better operation and longer life In Type A witches. Switch heating re* duced by cutting num* . bar of current carry* < Ing screw |olnt> to only 3 In type A switches-- to only 4 In type C. 1146 And fci Addition ,.. 1* New modern case design that matches CutlerHommer motor control styling. ' 3* Knockouts that reoOy knock out. 1 3. Front operation for dose ganging. * 4. Plenty of room ond oasy access to shopo up wires Inside* Easy Installation. 5* Knlfo typo blades, eelderless lugs, screw type fuse damps (Typo A), strong dtps. 6. AO parts cadmium ploted against corrosion. T,. Assured positive ond firm contact even after long use. & Contacts on Type A switches ore iJt*>er elated. POWER May 1946 To beat the heat that all safety switches generate while they are "on"... Cutler-Hammer Engineers designed a NEW Safety Switch. Their first step was to plan a switch mechan ism that would carry its load with a new low minimum of heating. Their second step was to build the mechanism so that it would far better withstand the heat produced by the fuses in normal operation. Finally they added plus features which a thorough investigation over a long period of time showed that contractors, electricians and service men want. The result is an outstanding switch that offers better per formance, longer life, easier installation, better appearance, a new measure of safety... a switch such as you have never encountered before. Why don't you take the measure of its quality in your very next installation? At Cutler-Hammer wholesalers everywhere. CUTLER-HAMMER, Inc, 1358 St. Paul Ave., Milwaukee 1, Wisconsin. IIS NICHOLSON TRAPS AND ((T AKE IT Feature Durability and Simplicity that Maintenance Engineers Admire Scoggins lias been made district sales man ager in Los Angeles. He succeeds T W Bell who became special sales representative in Los Angeles, W S Wainwright has been named district sales manager in San Fran cisco. W L O'Connell has been appointed resident manager of sales in South Bend. Northern Equipment Co appoints Kissldt Co, 1524 Chestnut St, Philadelphia, Pa., as sales nnd service representatives for Copes feedwater regulators, pump governors, de superheaters and allied equipment. Territory includes southern New Jersey, southeastern Pennsylvania, eastern Maryland, Delaware. NICHOLSON THER MOSTATIC TRAPS --2 to 6 times great er "alve area gives enormous discharge capacity. 5 types: sites 1/4" to 2"; pres sures ta 225 lbs. Bul letin 544. CYLINDER CON TROL VALVES -- Types ter m a n y mediums; pressures ta SOOO lbs. Catalog 542. If you're suffering from traps and cylinder control valves that can't stand necessary abuse it's time to inquire about Nicholson units. ' In plain words, they have the kind of "guts" maintenance engineers admire. Precision-made throughout. For details of ex clusive Nicholson features send for catalogs or see Sweet's. W. H. NICHOLSON & CO. V Sl Raybestos-Manhattan, Inc, announces that Harry Smith of the Manhattan div, Pas saic, N. J,, corporation vice-president, will be in complete charge of corporation rubber product sales and marketing. Robert S Green becomes president of A P Green Fire Brick Co, succeeding his father, Allen P Green, founder of the com pany, who moves up to post of chairman of board. An executive committee of the board oi directors, composed of H B Plunkett, Lester J Miller, A D Bond, Walter G Staley and Allen P Green Jr, was created. Work ing with the new president will be a manage ment committee in charge of operations. Members of this committee will be J Har rison Brown, D H Kreutzer and Neal S Wood, with Robert S Green as chairman. A E Aldridge has -been made general adver tising manager of Sun Oil Co. Culler-Hammer, Inc, announce following appointments on their research and develop ment staff: C T Evans as consulting en gineer, C W Kuhn as assistant manager of development, R'A Millermaster as assistant manager of development. E P Wood has been made- vice-president o( Stevens & Wood, Inc. This Armored Floor Never Wears Out! Hendrick's Mitco Armorgrids add ' great strength and rigidity to floors, platforms, ramps and drive ways subject to shock, grinding loads and continuous wear. Floors oi cement, asphalt, mastic or other compositions never require re placement when reinforced with Mitco. Mitco Armorgrids are completely fabricated units, requiring no bolts, rivets or assembly work--and un like other floor armorings do not . depend on fill for development oi full strength. Write for Mitco Booklet today. ** HENDRICK Perforated Metals Perforated Metal Screens Architectural Grilles Mitco Open Steel Flooring, "Shur-SIte" Treads and Amorgrldt. 46 DUNDAFF STREET, CARBONDAIE, PENNA. Sol*. Offices In Principal Cities H F Spoelircr, vice-president of Sporlaa Valve Co of St. LouiB, was elected president of Refrigeration Equipment Manufac turers Assn. Other new officers are Edward M Flannery of Bush Mfg Co, Hartford, Conn., vice-president; Guy J Henry of Henry Valve Co, Chicago, treasurer; and C H Benson of Imperial Brass Mfg Co, Chicago, treasurer. Newly elected to board of direc tors are K B Thorndike, manager of Chicago office of Detroit Lubricator Co; G E Grafi of Ranco, Inc, Columbus, 0.; R H Israel of Virginia Smelting Co, W Norfolk, Va.; H F Hildreth of Weslinghouse Electric Corp, Springfield, Mass.; and J W Krall of Tyler Fixture Corp, Niles, Mich. American Society of Heating and Ven tilating Engineers appoints Clyde A Mo Keeman assistant to president. Appointment of a synthetic liquid fuels tech nical advisory group, composed of eleven outstanding chemists and engineers from industry, was announced by Bureau of Mines. Members of the group are Eugene Ayres, staff chemist on process development for Gulf Research and Development Co, Pittsburgh, Pa.; Ceorge Creelman, research engineer for Pittsburgh' Consolidation Coal 296 (Ufa) POWER e May I94& t . i POW i i $ sc is- e0* ol. fo nd 071 or iirt I i i NEMA 4 Water-tight . . NEMA 5 Dust-tight ' . . ." NEMA 7 For Hazardous Vapors / ' Also Oil-tight Construction ,t t ................... ; Q,Mi0M construction that really keep, oil out. NEMA'9'For hazardous Dust. . * 'v.V;' Oilproof Neoprene gaskets positively pro ' From l to 6 Heavy Duty Elements . vent oil seepage. - O Cutler-Hammer now offers a broad with drip-hoods and gnard flanges . . . range of pushbutton.stations and push these are just a few of the scores of con button elements for special service of struction, operation and installation su every kind. periorities that show why machine Typical of the line, the oil-tight sta-' builders and machine users prefer tions conforming to automotive and Cutler-Hammer pushbutton elements machine tool standards, offer superla and stations and say they have no tive engineering. Oilproof Neoprene, equal: Write for full information to Also a complete line of . one ,hole and base mount ing elements without en gaskets positively, se.iil out oil; large rugged terminals - abolish the need to form a loop., in day.' Cutler-hammer, Inc., ms St. Paul Ave., Milwaukee 1, Wis. Associate: Cana closure. wiring; oversize dian Cutler-Ham wo mushroom type operating buttons mer,Ltd.,Toron to, Ontario. ratnps 944 POWER June 1946 119 I t IS :* i i i i; :i >i i i 'i .! il ii i1 j .