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 602
in the Cornish engines. The form ofthe cam is a sort of twisted elliptical cylinder, so to speak, against the exterior surface of which apulley fixed, on the end of a lever, presses, and by the motion thus derived opens the valve. Fig. 1666 represents the variable expansion-geer of Gonzenbach.It…
Mechanical engineering
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