Wheels and wheeling; an indispensable handbook for cyclists, with over two hundred illustrations (1892)
Porter, Luther Henry · Boston, Wheelman Company · leaf 86
four pinions HISTORY OF THE BICYCLE. 65 mentioned above. On the inside of hub are cutinternal teeth, into which the four pinions alsogear. In action the crank actuates the axle, andtherefore the four pinions, which again drive the hubby means of the internal teeth. The degree of gear-ing is… … Geared Ordinary Bicycle—1891. used for many years in the Crypto two-speed gear, inwhich it is subjected to even greater strain, so that themakers have every confidence in its standing any strainthat it may be put to, and also wearing well. Thisgear adds to the weight about two pounds in all,…
Cycling · Bicycles
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