Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 708
interior of the piston with cold water. It will be noted that thereare two air-cylinders placed side by side, with cranks set at quarterangles, driven by cut gears from the main shaft which operates themine-pumps and hoisting drums. This shaft is driven by Leavittcompound engines of about 1.500…
Mechanical engineering -- Dictionaries
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