Appleton's dictionary of machines, mechanics, engine-work, and engineering (1861)
Appleton, firm, publishers, New York. (1852, D. Appleton & Co.) · New York : D. Appleton · leaf 489
Scale.—:i iuch=l foot. pump, and the greater part of the remaining 96 is balanced by weighted levers. The main pump-rodis usually composed of balks of Memel timber, and at intervals down the sides of the shaft projectingpieces are bolted on, which catch upon suitable timbers let into the sides of…
Mechanical engineering
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