Appleton's dictionary of machines, mechanics, engine-work, and engineering (1861)
Appleton, firm, publishers, New York. (1852, D. Appleton & Co.) · New York : D. Appleton · leaf 570
multiplying geer is not easily comprehended, but theprinciple of the arrangement may be explained to consist in such an arrangement of two cranks, of whichthe one is twice the length of the other, that the movement of the crank-pin of the longer crank througha semicircle will cause the crank-pin of… … If the wheels shown in Fig. 1474 revolved upon axes in the usual way, a would make an entirerevolution, whilst b made only some portion of a revolution; but if b, instead of revolving upon an axis,be suspended upon three cranks c c c, of equal length, and the radii of which are respectively equal…
Mechanical engineering
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.