Gearing for translating rotary movement for use in bicycles, comprises two disks supported on different shafts, with second disk consisting of two part-disks rotating in opposite directions

摘要

The gearing comprises a first disk (1) which is fixed on a first shaft (3), and which consists of bolts (5). The bolts are axially movable on the periphery of the disk. A second disk (2) consists of two part-disks (2.1,2.2) which rotate against each other on a second shaft (4). The part-disks face each other in such a way that the web (7) of one part-disk faces the groove (6) of the other part-disk.