Wheels and wheeling; an indispensable handbook for cyclists, with over two hundred illustrations (1892)
Porter, Luther Henry · Boston, Wheelman Company · leaf 193
riving gear is a combination of thelever and gear wheel movements. To the fork end,just above the bearings, a metal arm is attached, thiscurving slightly upward and ending in a bearing for alarge gear wheel which gears with a second and smallertoothed wheel upon the axle of the driving wheel.The… … Spiral Safety. the rear end of which the foot is placed upon a pedalin the usual manner, while the forward end is con-nected to the larger gear wheel before mentioned bymeans of a connecting rod attached, like the pistonrod of an engine, to the side of the wheel. The actionof this gear is, by means…
Cycling · Bicycles
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