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 795
r62 SHOE-MAKING MACHINERY. Keens heel-trimmer is represented in Fig. 3915. The shoe is held by a clamp as before, and thetrimmin knife is operated by means of the crank shown. In the machine which is used for trim- … 3! 114
Mechanical engineering -- Dictionaries
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