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JEFFERSON Specialty UNIONS feature the RECESSED BRASS SEAT tor permanent tightness without jamming All Jefferson Specialty Union* feature lire Recessed 6rau tpherkoUf around Soot which ossuret e leakproof anion rather than o jam joint. Furthermore, this design preside* o brats to iron joint with the sect to recessed ei to bo fully protected from pipe ends should pipe be screwed In too for. The Jofforeoo Specialty Union illustrated ... A Union Too ... Is recommended for ese where a onion Is required near a too. The application of a anion of this typo wifi simplify piping installation and matt In fever pipe joints. The Jefferson line of Specialty Unions h complete os to typos. Foil detail* con be bod from year Merest distributor ... or write era direct. Jefiinen Union Tea, Alt Female, with union on tire tun. JEFFERSON UNION CO. 601 West 26th St., New York 1, N. Y. LEXINGTON 73, MASS. LOCKPORT, N. Y. No rWcUeAla<f<fUuf, on Ai/i RUuSUtstf. ,w HYDRO-PNEUMATIC TANKS (QUIPPED terisl* require more cleftreact iwj others, and normal running speeds tywl from engine to engine. Based on age engine usages, the chart on p can be used as a rough guide to mum desired oil elearance lor Sts typ ing materials. The bearing manufacturer muaBy' establishes the minimum perminitj,* diametral clearance (or the applies^ based on maximum shaft tolersa^' maximum wail thickness and minlm^ bearing-housing bore. The aetusi sible maximum oil elearance thus fe'i pends on how closely tolerances of ifc- respective parts esn be held. '' E M Dart Mfg Co, Providence, R. 1, kuv sdepied new firm price policy. Oo after Oct 1, 1947, all prices qoeted os Dta prodocts are on a firm priee basis, subjrq* to ecceptsnce wflhfu IS deys from din of quotation. Ail products shipped . orders dated Oct l, 1947, sad tbertafto/ are billed at prices In effeei on data crdal la accepted, or at prices prevailing at dm' of shipment, whichever Is lower. J Buffalo council legislation eommiua' djvoted to receive and file sppUeatioo Buffalo Steam Serrice Corp for eensnu s' install steam pipes underground lo dst: town Buffalo for besting and power per- poses. The application, which has bets before `the committee a year, drew oppad lion from Buffalo Fuel Merchants Assods don. International Brotherhood of firs men and Oilers, Intenutloosl Breihcrled of Operating Engineers, and others si lengthy hearing before the cemmlttee Is fall snd early this year. DUOTROL The DUOTROL maintains high wotar level at a fixed paint and correctly bo lances air pressure alter each pumping operation. It provides o maximum volume ol water with o minimum of pump operation, saving power and reducing wear. Eosy ta install, stablo adjustments. The DUOTROL shown is on a tank where water at 50oF. is pumped from a 600 It. well lor summer cooling ol a complete shopping center. The pressure range is from JO to 70 lbs. Ask lor Bulletin D-6. "AUTOMATIC" olso mokei prgistiro otid Moot operated pump controli: multicircuit sequence type, multi circuit program type, floot switches, outomaNc alternators, and mony special controls built to specifications. AUTOMATIC CONTROL Company 100* UMIVISSITY AVI, ST. RAUL 4, MINN. IM (S9b| POWER'S History : Power was founded in 1BB4 by Ef Harris end I! M Swetlnnd. With It *a, Incorporated Steam, which had bca started by N Hawkins In Chicago tn years earlier. ; In 1903 Power purchased and V sorbed Science and industry, which *u a consolidation of a number of period! cola, namely. Home Study Magesim Home Study for Machinistt, Mechanist Magazine, Home Study for Buildist Trades, Building Trode's MagedsA Home Study for Electrical Workers s Steam Electric Mogaitne. In 1908 Power absorbed The Sep neerie Review, of Oevelend, and Tb Engineer, of Chicago, tho latter bri*f a consolidation of The Safely Kri* Lord's Power and Machinery Maged/n, The Stationary Engineer, Steam Sop neering and The Mechanical Engine* When The Engineer was purchased,^ name of the combined tnagoxine v Power and the Engineer. The title condensed to Power In 1911. AH riP to the preceding titles reserved. POWER January provides safe, sure, efficient lubrication-lasts indefinitely! A steam turbioe represents one of the largest expendi tures that cun be nude for a single unit of industrial equipment Compared to that investment, the finest oil you can buy to help protect it is ridiculously cheap. ^0f safe, sure, efficient lubrication, scores of leading turbine operators specify Gulfcrest, the world's finest turbine oil. The important reason*. After conventional refining, Gulfcrest Oil is superrefined bv the AJcblor Process. ------------- Auk** t^aQ ^ cent f the oil Is discarded by the Process--thij 1J per cent contains the hydro- ^uoos most likely to oxidize and form sludge, emul. *"*** and harmful adds. That's why Gulfcrest is incomparably pure--why it outstanding performance, and lasts indefinitely. __ ^ ^pon at right for booklet which gives you the plate facts on this superior turbine oil. *W|* * January IV48 Gulf Oil Corporation * Gulf Refining Company OfWiJea Sofa* Offiteu Bolton Now York Phlfodolphlo Piltiborglt Atlorrto Now Orlaowo * Houston LooUwlllo Tolorio Calf Oil Carseroiien Coif Conpeny 3000 Coll Bwldis*. DltiVorSb SO, P*. P _ Flew wod im. without oblitsiloo, copy ( your booklet **Cu||,el Oil lor $ino TotMoo Lubrication." rid,........................................................................................... 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