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''Twenty*nme yeara ago, Frederick Iron (k Steel manufactured its first centrifugal pump... a 6" Double Suction Volute type. Deliv* ered in July, 1919, this pump is still in operation today at the Dominion Coal Co. in Sydney, Nova Scotia. Minor repair parts over the 29-year period have been famished promptly by Frederick. Today, Frederick Iron & Steel is manufacturing a complete line of single and double suction, single and multi-stage centrifagal pumps with the same long-lasting quality built into its first unit. When you buy Frederick pumps you're assured of continuous, economical operation from extra long life. We have ament our dcaigna just the centrifugal pump you're looking for. Drop tine to the address below and well gladly send you an attractive. Illustrated "file-site" brochure on our pumps as well as the name of our factory representative nearest you. Ask Vt&cb'f&UcA^foar Bulletin 104. IRON AND S EEL, INC. Dept. P-4 Frederick, Md. Power. Engineers Meet In St. Paul National Assodstioo of Power Fnglntcu held Its 65ih annua) eonveDtion snd power* show at ihe Municipal Auditorium, St Paul, Minn., Aug 23 to 27. Attending were about 209 delegates, over 1S00 rititers sod ' 500 manufacturers representatives. First session, called to order by Cten t ' Copeland, genera) chairman of the cornea, lion committee, featured addresses by Luther W Youngdobl, governor of Mine.'*.! solo, Joseph P Flynn, national president ' NAPE, Edward K Delaney, mayor of Si. Pool, end Cliftoa R Harding, national rice. president, NAPE.' Morning lesdo&t at. ered tbe oiual association business reports white afternoons and svenlnga were devottd ! to educational features. 178 (730o> CLIFTON R HARDING President NAPt At the final busineu meetiag, CUlwa R Harding, master mechanic, power ploot, Portsmouth Naval Ship Yard, Portsaootb N. H., and member ol Lowell, Mass* Chip-, ter 17, wa# elected president for the year, 1948-19. Mr Harding wss national vlee-prid` lost year and Is a put president of UwcIm Chapter and New England Stales A****"*, tlon, NAPE. No was notional trust** t*' four years, and la a present member of board of directors. , Newly elected Vice-President G>-*: Copeland la plant superintendent . ' State Capitol building. Si Paul. ` joining tho NAPE In 1924, Clen has W* every office in St. Paul Chapter 7. u "V oa being a past state president. F ; past five years he has been editor Minnesota State Association's P##* nttr'j AnruteL As national direct two yean he also served on tho P""c*rT, committee. Another ol his P****" 1' la that of state director of the NAP pern, Pln. Ho W.I of this year'a convention and pow*1 Officers reelected for another y|f ,' secretary, A F Thompson, Chll?* treasurer, Harry J. Harp, Philadelphia/ Neat year it will be held la Chicago. POWER * Novsfnb* M TheUni-Matic Oil Purifier is like a WATCHDOG ADE LAVAL Oil Purifier is always mechanically alert for' trouble. Operating on continuous by-pass, it keeps the turbine lubricating oil dean and free from impurities and moisture which normally get into the syBtem. These impurities and water tend to form sludge, so. that the Puri fier literally hdps to prevent sludge formation. Equally important in an emergency is the fact that if an unexpected major water leak develops, the De Laval Purifier can con tinuously dehydrate the oil and thus prevent serious damage to the turbine. ' The "Uni-Matic", the type of De Laval Oil Purifier most generally used, provides a complete oil purification plant, compact and fully endosed. It includes pumps, gages, and all necessary accessories for keeping oil in the best possible condition. The machine is direct motor driven, self-lubricated, and ball-bearing equipped. The bowl in which purification takes place by cen trifugal force is self-draining and of the "constant efficiency" type. Write for Bulletin TO-1. THE DE LAVAL SEPARATOR COMPANY 161 Brcdwiy, N.w YoHt 6 4S7 Rudolph St, CMu,o 6 DE LAVAL PACIFIC CO., 6t Eul. Si, San Fioxteo S THE DELAVALCOMPANy,Um!ltd,PteifcoToBsh,OnL DE LAVAL