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 765
when the arm of the cam-lever is coincident with the arm of the stock. By turning thecam-lever half a revolution, the straight side of the lever facesthe dies ; hence the latter may be instantly removed and otherssubstituted. The dies may be used to cut up and down the bolt; or, after a cut is…
Mechanical engineering -- Dictionaries
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