Lever arm transmission for bicycle, has roller pushed against running rail and downwardly pressing lever arm with bearing, where power is transmitted from pedal to foot pedal and endless chain for driving rear wheels over derailleur gear

摘要

The transmission has a roller (18) pushed against a running rail (19) and downwardly pressing a first lever arm (41) with a bearing (39). Power is transmitted from a pedal (23) to a foot pedal (36) and endless chains (48, 11) for driving rear wheels (12) over a derailleur gear. The power is transmitted from a second lever arm (1) to another bearing (34), a pulley-block (24) and deflection rollers (6, 50). The power is transmitted to a deflection roller (51), a third lever arm (22) and the former bearing. The lever arms are brought in a forced direction by a cable (53).