Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 608
ssure-screw y that bears against the lower end of the lever, so that as the blank is carried up bythe wheel to be presented to the dies, the pressure of this roller against the head holds it firmly in therim of the wheel The machine can be made double for threading two screws at one and the… … It will be obvious from the foregoing that, instead of the segment cog-wheel for giving the recipro-cating motions to the carriage of the carrying-wheel, this may be done by a segment volute-cam, the faceof which shall act alternately against the front and back faces of the open space of the bar…
Mechanical engineering · Mechanics · Engineering
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