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 931
in section in Fisr. 4186. The movable jaw A passes through the fixed jaw B. Pis the bed-plate,above which is a steel rack-plate H. Attached to each side of the rear end of the lever-handleis a disk. These disks are inserted in the outer end of jaw A, and are held in place by friction-straps…
Mechanical engineering -- Dictionaries
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