| 摘要 |
<p>The gear change mechanism has a segmented drive gear, a driven sprocket wheel and a cylindrical stop. In the locked position, the cylindrical stop is concentric with the segmented gear, and is held by a cylindrical sliding shoulder. There are one or more segmented gears (21, 22) on a common drive. The driven axles (31, 32) each have a change gear, and are operated by a switching program which depends on the number and size of the various wheels. The change gears have single operating elements that connect to electrical switches (Potentiometer, coil or variable condenser). The switch characteristics are therefore the same as the electrical circuit. The control circuit can be designed with a superheterodyne circuit.</p> |
