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Charles Thomas Brock Sangster
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5411. Sangster, C. T. B. March 15. Variable-speed gearing.-In two. speed driving- mechanism for cycles, for the normal or high speed, the central pinion g, sliding on the fixed axle, engages an extension e of the planet-pinion cage d screwed into the hub, so that the gear turns as a whole. By pulling a wire or the like o, connected to a cross-piece n, passing through slots in the axle into collar m<2> upon an extension m of the sunwheel, teeth k<2> upon this wheel are brought into engagement with fixed teeth k<1>, so that the hub is now driven at low speed through the internal teeth upon the cap a and the planet-wheels. A spring p tends to maintain the gear in the normal-speed position. The planet-pinions are mounted on studs between two plates the outer of which may be detachable from the studs. The locking-teeth on the axle may be distanced. According to the Provisional Specification, the mechanism may be of the type in which planet-pinions carried by the driving-member gear with an internally-toothed annulus upon the hub, in which case the normal speed is low.
GB190505411D1905-03-151905-03-15Improvements in Two-speed Driving Mechanism for Cycles
ExpiredGB190505411A
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