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 522
are transferred the length of their faces right and left; and as the sectors are edge shaped at their centraof motion o o, they necessarily revolve free from the impediment of rubbing surfaces, and consequentlywithout friction. When the eccentric wheels have made their revolution, the follower will…
Mechanical engineering · Mechanics · Engineering
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