METHOD FOR MAKING AND ASSEMBLING MEMBERS ROTATING BETWEEN SIDE PLATES, AND THE PRODUCTS OBTAINED, ESPECIALLY FOR USE IN THE TENDING AND WINDING OF THE CHAIN IN SPEED CHANGES FOR BICYCLES AND SIMILAR VEHICLES

摘要

The object of the invention pertains more particularly to the art units of the manufacturing of rotary organs for the production and assembly of organs of plastics. The method is characterized in that toothed rotary organs (2) are made by molding directly with their rotational axis (1a) and their supporting cheek (1), and that a countercheek (3) is then made which is equipped for receiving for free rotation the toothed organs (2) and designed for a forced fit on the axis (1a) after the two cheeks have been brought nearer under pressure towards one another, in order to cause the fastening portions (2d) which connect the axes (1a) with the organs (2) to be broken off. The invention is more particularly to be used with the chain guide means of the gear shift devices of bicycles and similar vehicles.