The lift is effected by cams acting on the under surface of tappets, and formed by cylindrical boxes keyed on to the stems of the lifter about onefourth of their length from the top. As, however, the cams, unlike those of European stamp mills, are placed to one side of the stamp, the latter is not only lifted but turned partly round on its own axis, whereby the shoes are worn down uniformly. [Please select]
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Before this stud can be got free of the notch the tappets H and S must be pulled over, so as to bring their notches in line with studs _b_ and _c_ (Fig.) [Please select]
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