Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 539
i tlirough a nan which they cntircl) fill, and thcrebj pi 532 PUMPS. passing -with them. In other pumps the butment is obtained by the contact of the peripheries of twowheels or cylinders, that roll on or rub against each other. Fig. 3135 is of this kind: while the teethin contact with the ends of…
Mechanical engineering
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