| 摘要 |
In this apparatus the driving and driven parts are mounted for axial movement relative to one another, but are held resiliently in axial positions of rest by compression and tension springs, respectively. The compression spring is mounted in the driven part between a sleeve reciprocably mounted on the inner end of the driven part, and a plug adjustably threaded in the outer end of the driven part, so that by inserting a tool into the outer end of the driven part, the plug can be adjusted to vary the tension in the compression spring. The tension spring is also attached at one end to this plug so that its tension is adjusted simultaneously with that of the compression spring. |
