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 216
theengine being double-acting, we have to take into considerationthe position of the crank when the piston has performed one-fourth of its stroke in the opposite direction from the point B;and here we find, that by supposing the crank to have describedthe arc b e, (equal to a d,) instead of the… … 2579.
Mechanical engineering · Mechanics · Engineering
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