| 摘要 |
A method is disclosed for tracing and extracting unused cross-connection wires from a distributing frame by utilizing a tube having a detachable hollow conical head at the leading edge. One end of the dead wire or wire pair to be extracted is passed through the head and attached to a pull wire inside the tube. The head is inserted into the tube and the entire assembly is pushed along over the pull wire and the dead wire into the cable bundle until the dead wire is freed for extraction through the tube. A connection is provided on the tube for the application of pressurized air or smoke to aid in locating the leading end of the tube when an obstruction is encountered.
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