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Thomas James Wall
James Mcrae
George Theodore Temple
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17,669. Wall, T. J., McRae, J., and Temple, G. T. Aug. 14. Cranks, variable-throw, for bicycles and the like. The pedal i is carried by a lever b, which rotates about a fixed axis d and is connected by a link j to an equal lever a secured to the axis c of the driving sprocket-wheel. A fixed arm k or an equivalent disc connects the axes c, d. The lengths of the levers a, b may be varied, either by providing them with slots in which the linkj can be adjusted, or by other means. In a modification described in the Provisional Specification, the link is dispensed with and the end of one lever slides in the other lever.
GB190317669D1903-08-141903-08-14Improvements in Crank Transmission Gear for Bicycles Motors and the like.
ExpiredGB190317669A
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