. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . Fig. 4.—Punch and straigbtener. removed for changing. The cut shows machine set to punch a 5-ft. row of 60 one-quarter-inch holes through onc-(iuarter-inch metal. Aniomatic Spacing Punch.—Fig. 3 shows an automatic trimmer, beveler, spacer, and. Fig. 5.—Multiple and I-beam punch. punch, made by the same company. It is designed to trim, bevel, space, and punch the holesin boiler and other plate work. The sheet is fast
. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . Fig. 4.—Punch and straigbtener. removed for changing. The cut shows machine set to punch a 5-ft. row of 60 one-quarter-inch holes through onc-(iuarter-inch metal. Aniomatic Spacing Punch.—Fig. 3 shows an automatic trimmer, beveler, spacer, and. Fig. 5.—Multiple and I-beam punch. punch, made by the same company. It is designed to trim, bevel, space, and punch the holesin boiler and other plate work. The sheet is fastened to the table and fed past the tools,which trim and bevel the edge, and automatically space and punch the holes. The spacingis adjustable. The table has quick hand motion in addition to the power-feed motion. PUNCHING MACHINES. 697 .Combined Punch and StraigMener.—Fig. 4 shows a horizontal beam punch combinedwith a straightener. also made by this company. The main driving shaft, acting through a bevel gear, drives the largehorizontal wheel whichthrough a cam shaft drivesthe sliding liead, one end ofwhich carries the punch, andthe other a straightening blockor die. The machine is de-signed for bridge, girder, andgeneral beam work, and willpunch holes in li in. plateand straighten 15-in. straightening die is ad-justable while in motion. Mu Iti pi e (unl I-BeamPunch.—Fig. 5 shows a heavymultiple a
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Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering
