| 摘要 |
A rope control device provides a locking function and different frictional resistance depending on the direction of travel of the rope, comprising an eccentric pulley 1 and associated rope guide member 10. The pulley having a control handle 13 secured thereto for releasing the locking mechanism. The rope is threaded around plurality of rope guide members 10,11,12 each of which is mounted on a spindle 16,17,18 around which it can rotate in one direction but not in the opposite direction. When the rope is moved in one direction through the device the rope guides rotate reducing the frictional resistance to the passage of the rope, when moved in the opposite direction the rope guides remain fixed increaseing the frictional resistance to the passage of the rope. Preferably a pivotably mounted cover (6, fig 5) can be moved to expose the pulley and rope guides to allow roping or unroping thereof. |
