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 129
on inclined tracks or ways. The apron passes over and rotates the drum A, which by a pinion turnsa sear, on the opposite end of the axle of which is a wheel, which is governed or held by a brake-lever. The horse walks upon the step-boards, and so causes the apron to rotate. Power is takenoff by…
Mechanical engineering -- Dictionaries
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