| 摘要 |
<p>A cable guide arrangement includes a cable guide (12) pivotally mounted on a support which can be lowered onto a hole in a pipe. A tow cable (1) affixed to a threading wire (8) is passed through the guide which is initially in a vertical position but due to pulling forces will automatically move in an arc to a second position so that the cable passes over pulleys (3 and 4) as it moves within the pipe.</p> |
