. 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. 6.—Toggle press. Elevation. 668 PRESSES, Fig. 7.—Pres^s diagram. -TTl-. by its pressure prevents any kinking or buckling of the sheet. It is important to secureeven pressure all about the blank, and this is i)rovided for by makinjr the blank-holder intwo parts, and putting in tlie four screws, «, a, a, a, one of which being i)laced at each corner of the blank-holder, and provided withsuitu!)lc nuts, t
. 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. 6.—Toggle press. Elevation. 668 PRESSES, Fig. 7.—Pres^s diagram. -TTl-. by its pressure prevents any kinking or buckling of the sheet. It is important to secureeven pressure all about the blank, and this is i)rovided for by makinjr the blank-holder intwo parts, and putting in tlie four screws, «, a, a, a, one of which being i)laced at each corner of the blank-holder, and provided withsuitu!)lc nuts, the pressure can be made uni-form all over the face of the die. Thesescrews serve also for the vertical adjustmentof blank-holder to suit different dies, therange of adjustment provided for being 8 punch can also be adjusted vertically byturning the shaft carrying the pinion, d (), which engages with llie lievel gear shown,this bevel being at the bottom of a largescrew which affects the movement by meansof a slide ; the four bolts, shown above thepinion and on either side of the shaft, bind-ing all tightly together when the proper adjust-ment has been made, so that no alteration can take place without first looseni
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Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering
