Title: Method for locating conductor breaks during the two stage twisting of a communications cable

Abstract: To localize a conductor break occurring in a conductor being twisted into a communications cable in a two stage twisting operation the faulty wire is first ascertained and the fault in that wire then subsequently located using a probe placed between the twisting apparatus and a take up drum, with the twisting process then stopped and the fault corrected. In one particular embodiment which is disclosed all wires are short circuited, for example, at the end of the twisted cable which is wound on the take up drum, the wires entering the twisting arrangement are divided into two groups of equal size with each of the groups connected to one end of an a-c voltage source symmetrical with respect to ground through high resistance series resistors with the voltage drop at the series resistors then detected to locate the faulty wire and the probing of the twisted structure done capacitively using a probe for determining the exact fault location.

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Inventors: Vogelsberg, Dieter (Berlin, DT)
Reil, Horst (Coburg, DT)
Froscher, Peter (Berlin, DT)

Application Number: 543541
Filing Date: 1975-01-23
Publication_date: 1976-09-14
Assignee: Siemens Aktiengesellschaft (Munich, DT)
Primary Class(es): 57/264 57/81, 57/293
Other Classes:
US Patent Ref:

3140577	Jul, 1964	Ash	57/34.
3412544	Nov, 1968	Sugi et al.	57/34.
3481127	Dec, 1969	Vogelsberg	57/34.
3491525	Jan, 1970	Sugi	57/34.
3659406	May, 1972	Kipperberg	57/81.
3884024	May, 1975	Oestreich et al.	57/34.
3884025	May, 1975	Oberender et al.	57/34.
3921381	Nov, 1975	Vogelsberg	57/156.

Other Refs:
Primary Examiner: Petrakes, John
Assistant Examiner:
Attorney: Kenyon & Kenyon Reilly Carr & Chapin