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 539
pace which they entiieiy fill, and thereby prevent any watei 532 PUMPS. passin -with them. In other pumps the butment is obtained by the contact of the peripheries of twcwheels or cyhnders, that roll on or rub agamst each other. Fig. 3185 is of this kind: -n-hile the teethin contact with the ends…
Mechanical engineering · Mechanics · Engineering
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