MECHANISM TO CONVERT THE FRONT IDLE WHEELS OF BICYCLES IN GENERAL INTO DRIVE WHEELS

摘要

Mechanism to convert the front idle wheels of bicycles in general into drive wheels Mechanism to temporarily convert the front wheel of bicycles into a driving wheel, comprising a lever (5) hinged in front of and on top of the frame; the handlebar -E- is fixed to said lever together with a catch (14), with a mobile stopping tooth which cooperates with stopping means (11, 15) attached to the steering column (10), to block/release the handle-bar which can be swung on a vertical plane; transmission organs, comprising a chain (7) which engages a free wheel (8) coaxial and fixed to the front wheel -I-, transmit the alternate movement given to the handle-bar to the said free wheel; elastic return means for returning to the original position of the handle-bar are also provided. Control means (16, 17) for the stopping tooth of the catch (14) are applied to the handle-bar. (Figure 3).