. American engineer . djustable in a horizontal plane to the extent of 2 in., the closest distance to the center plunger being 3 ft. 3 of the cylinders are outside packed having bronze flanges andbronze guide bushings, hemp packing being used. With thisarrangement it is easy to repack the cylinders. The top platen is adjustable to any height between 4 ft. 8 a minimum and 10 ft. as a maximum above the moving platen;the most convenient setting has been found to be about 7 ft. 6 most classes of work. W.\TER SUPPLY. The transmission of power by water is about the mostecono
. American engineer . djustable in a horizontal plane to the extent of 2 in., the closest distance to the center plunger being 3 ft. 3 of the cylinders are outside packed having bronze flanges andbronze guide bushings, hemp packing being used. With thisarrangement it is easy to repack the cylinders. The top platen is adjustable to any height between 4 ft. 8 a minimum and 10 ft. as a maximum above the moving platen;the most convenient setting has been found to be about 7 ft. 6 most classes of work. W.\TER SUPPLY. The transmission of power by water is about the mosteconomical method, having an efficiency of about 94 per water for operating this press is obtained from a large tankof clean water which is returned from the press cylinders afterpassing through them. The pump is shown in Fig. 4. It hasthree doulde acting 3^4 in. x 12 in. cylinders, and was made bythe Chambersburg Engineering Company. This pump delivers100 gals, per minute when running at 40 r, p. m. and is geared. Fig. 4—Heavy Duty Pump for Hydraulic Flange Press. and the operating expenses covering the interest on the invest-ment, engineering expenses, labor and power for a ten hour dayoperating basis will be about $24,000, which deducted from thegross saving on both car and locomotive work of $89,330 willleave a net annual saving of $65,330, which is well worthconsideration. DESCRIPTION OF THE PRESS. A photograph of a 12 ft. x 15 ft. hydraulic flange press, designed and built by the Bethlehem Steel Company, is shown in Fig. 1. By referring to Fig. 2 which is a cross section through the ■ vertical center of the press, it will lie seen that there is a top direct to a 125 h. p. 500 volt d. c. motor running at 500 r. p. water pressure is 1,500 lbs. per sq. in. .•\CCUMULATOR. In order to have a sufficient supply of water at the pressureof 1,500 lbs. per sq. in. two accumulators are connected in seriesby a 3 in. double extra strong pipe between the pumps and thepre
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1912
