A transfer mechanism of force with change of march for bicycles and other vehicles moved by pedals (Machine-translation by Google Translate, not legally binding)

摘要

Power transmission mechanism, with gear change, for bicycles and other vehicles moved by pedals, constituted by a pinion thrust, type escape wheel or ratchet, mounted mechanically integral with the pedal axis and thus rotating with it, a driving wheel of the driving chain or the like of the driving wheel of the vehicle, driven by said thrust pinion (inside it) and whose position can be varied, so that its axis of rotation, parallel to that of the pinion, is moves parallel to itself subsequently varying its eccentricity with respect to the pinion, and several oscillating levers, articulated on eccentric points of the drive wheel of the chain, through which this wheel mechanically links with the pinion of thrust. (Machine-translation by Google Translate, not legally binding)