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Fans and Ventilating De Bothezat Impeller Co., Inc. 1922 Park Avenue, New York, N. Y. Branch Offices and Representatives in All Principal Cities Foreign Office ( \ AWSEABNBODBUTSJSTSRAENMCOOV..INLGtd&.. D16R5 YBINboGadCwOa.,t.LtNd..,YT.iyiot Dale Chambers. Stoc Manufacturers of De Bothezat Disc Pressure Fans De Bothezat Fans are guaranteed to have a non-overloading power characteristic, that is, to absorb at constant revolutions practically the same power whatever the static pressure under which they are operating for the whole range be- . tween free delivery and no delivery. This impor tant property insures the complete safety of'their operation under any conditions to be met in practice. De Bothezat Pressure Fans made in all sizes from 8 in. to 10 ft. Motors for these fans are furnish ed from )4o hp. to 100 ' hp. The capacities of the fans run from 350 c.f.m. to 254,000 c.f.m. Static pres sure from ]/i in. to 3 in. High efficiency and large air volume, together with high pressure character istics are a few of several qualities which distinguish De Bothezat Disc Pressure'Fans. GIANT FAN--Sites from 5 ft. to 10 ft Powers from 2 hp. to 100 hp. Vohimt /ro 16,000 c.f.m. to 54,000 c./.m. Static Prttnrt from % to 2 in. Sp&d from 176 r.p.m. (o TOO r.p.m. Pan and motor mounted on tame ban securing perfect alignment. Rtquircs minimi* floor space. Chain driven, tezrope drive, or directly connected * 48 in. DISC PRESSURE FAN 6 hp. 660 r.p.m. 45.000 c./.m. agoirurf inn. s.p. and 28,000 c.f.m. against fain. s.p. A Few Prominent Users Aluminum Co. of America American Can Company* American Tel. & Tel. Co. Bell Telephone Laboratories Brings Mfg. Company Buick Motor Company. 30 in. DISC PRESSURE FAN mo8 hp.. r.p.m.. 8 000 c.f.m. . against 1-in. s.p. and 12,000c.f.m against fain. s.p. The Bifuractor For special Ventilating jobs where fumes of excessive tem perature or corrosive character are to be removed. City of Detroit City of New York Continental Can Company The bifuractor is a device that permits the Detroit Edison Company Fairbanks Morse Company. General Electric Company' National Biscuit Company use of a straight-way duct. It eliminates right angle bends and National Tube Company New York Central R. R. Co. Packard Motor Company long shaft connections, at the same time pro Pennsylvania Railroad Co. Philadelphia Gas Company Public Service Corporation of N. tecting and automati cally cooling the motor. Republic Iron & Steel Co. R. K. O. Theatres Standard Oil Company of N. J. United Electric Light &. Power Co. Western Electric Company Western Union Tele. Co. Westinghouse Elec. & Mfg, Co. West Leechburg Steel Co- IMPELLER BLOWER The Impdla Blower U a new type of multiple stage discfan. This type offan con stitutes o long sought solution ofthe multiple stage disc fan arrangement The Impeller Blower has a very high efficiency and i i capable of developing high pressure and attaining high air deliveries at low R.P.M. The fan chamber is stream lined in section, and the bifurcated duct is not reduced in area at this point. Full de tails on request. 646 Fans and Ventilating Equipment KPF/S CITY Manufacturers Since 1879 McCormick Building Chicago, 111. ka . Eastern Office: 55 West 42nd Street, New York If 'Blowers; Exhausters; Unit Heaters; Pressure Blowers; Dust Collecting; gF*118! Ventilating and Drying Apparatus Cydaida! Malli-Blade Fart Cycloidal Multi-Blade Fan--Sturdy construc tion and . designed to de- . velop an efficiency equal to any fan of this type built. Overhung wheel and overhung pulley types, suitable for Heating, Ven tilating, Drying and Ex hausting. Catalog No. 200 contains complete data. Hi-Static Cy cloidal Fans are designed for use in connection with Dust Collecting Systems, and - for conveying materials of all kinds. Low Speed Power Sav ing. Catalog No. ' 410 contains com plete description and engineering data. Type "A" Propeller Fan Type "A" Propeller Fan-- For exhausting foul air, steam, smoke, etc. With direct con nected motors or furnished with pulleys for belt drive. Bulletin 310 contains data on various types and all sizes. Standard makes of motors used; ample in size. No overload, rio heating and thus no cooling device re quired. Hi-Stalu Cycloidal Fans Positive Pressure Blowers--For oil and gas burning and all purposes where a pressure otone to 5 lbs. is required. No gears or inter- hing parts. Catalog No. 291. Z OTHER PRODUCTS itrifugal Compressors--For oil and gas burning--Catalog No. 301. Forced and Induced Draft Fans. ' Blast Gates. Dust Collectors. Forge Blowers--Fan Coolers. Positive Blower Garden City products are a combination of genuine quality and efficiency. Fifty years of experience enables us to furnish "A Fan or Blower for Any Purpose." A complete set of literature should be in your files. 647