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 259
contact with the bottom of the holes, and by these the pins are lengthened or shortened so as to adjustthe tops very truly with the drum teeth revolving beneath them ; k, is a small cylinder, and i anothercylinder, both of which are Covered from end to end with narrow strips of card laid on…
Mechanical engineering · Mechanics · Engineering
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