. American engineer and railroad journal . djust what little wear there is tohead through long ser-vice. The cam-shaft is of hammered steel, 9 in. in diameter, withlarge bearings all bushed with very hard gun-metal, and thecam is U in. eccentric to the center of tiie shaft, giving thepunch a 3-in. stroke. The machine is titted with splittingshears 30 in. long, and tie bolts 3 in. iu diameter are providedfor tlie tliroat when the machine is used for shearing plates ofvery lieavy tliickness. The pulleys are 30 iu. diameter by GJ iu. face, and run at aspeed of 102 revolutions per minute, giving 3
. American engineer and railroad journal . djust what little wear there is tohead through long ser-vice. The cam-shaft is of hammered steel, 9 in. in diameter, withlarge bearings all bushed with very hard gun-metal, and thecam is U in. eccentric to the center of tiie shaft, giving thepunch a 3-in. stroke. The machine is titted with splittingshears 30 in. long, and tie bolts 3 in. iu diameter are providedfor tlie tliroat when the machine is used for shearing plates ofvery lieavy tliickness. The pulleys are 30 iu. diameter by GJ iu. face, and run at aspeed of 102 revolutions per minute, giving 34 strokes perminute to the machine. The gear is 8 ft. 6 iu. in diameter,and is geared to a shrouded pinion 8 to 1. The liy-wheel is00 in. diameter and has OA in. X ^ in. rim and elliptical shapedarms, and weighs 2,000 lbs. The pulleys are geared at rightangles to pinion sliaft to allow the machine to be driven directfrom the line shaft. The sliding head is counterbalanced andlias a heavy spring iu Ihe head connected to the stirrup to take. 60-INCn PUNCHING AND SHE \RING MACHINE. for elastic limit ; Madison Car Company, Indianapolis. Ind.,one 20,000 11). horizontal screw power testing machine ; L. Ilil-gartner ic Son, Baltimore, Md., one marble basin hole cutter ;A. Plamondou Manufacturing Company, Chicago, 111., one8,000 lb. transverse testing machine with indicator ; Gillett-Hertzog Mauufacturing Company, Minneapolis, Minn,, oue5,000-lb. transverse testing machine, with indicator for testingspecimens 48 in. long, and other smaller orders. A 60 IN. PUNCHING AND SHEARING MACHINE. We give a perspective view of a heavy GO in. punching andshearing machine that is made by the General EngineeringCompany, successors to A. .1. Sweeney & Company, of liar--vey. 111. The machine has a depth of throat of Gl in., and isbuilt to punch a fi-in. hole through |-in. steel plate, and on anactual test punched a Gin. hole through Irj- in. steel. Thestripper in the throat is adjustable so as to stri
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
