Lever arm drive for use in bicycles, has lever arm, which is mounted on bearing, and device, which makes circular motion in horizontal direction during beginning of operation

摘要

The lever arm drive has a lever arm (1,22), which is mounted on a bearing (2), and a device, which makes a circular motion in a horizontal direction during beginning of operation. Two pulley blocks (4,24) with two fixed and two loose rolls in each case are fitted in the device. A raceway (19) is screwed and adjusted to the bicycle frame (20).