The Modern bicycle and its accessories; a complete reference book for rider, dealer, and maker (1898)
Schwalbach, Alexander, Wilcox, Julius, Commercial advertiser association, New York · New York, The Commercial advertiser association · leaf 32
. The relative size of the rearmembers is varied to produce the requiredgear. Friction in bevel gears is de-pendent upon the harmonic mean of theteeth in both wheels, and in this modeltheory and experiment have joined handsto make the adopted proportion exactlyright. Wherever ball-bearings could… … MECHANISM AND FRAME OF COLUMBIA CHAINLESS. including the well-known Hartford single-tube tires, the same forks and handle-bar,the same seat-post and choice of saddle,the same unsurpassed frame of nickel steel,the same pedals and cranks. The differ-ence is entirely confined to the drivingmechanism,…
Bicycles
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