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 660
ust can either be worked by theman in front of the plate beingoperated upon, or from behind bythe chain as shown. It may beadded that no stop motion is re-quired in these machines, as the machine becomes stationary at any point of stroke the momentthe man working it releases the handle.Shearing… … which P = horse-power, t = maximum thick-ness of plate to be cut, and n — the numberof cuts per minute. In the following formula,a — the area of surface cut or punched perhour in square inches, and F = (1166 + 16911),a factor expressing the work required to pro-duce a cut or sheared surface of 1…
Mechanical engineering -- Dictionaries
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