Siemens Aktiengesellschaft

Norbert Sutor

Ulrich Oestreich

Dieter Vogelsberg

Gernot Schoeber

Peter Steinmann

Horst Eckstein

Willi Seyfart

A method for manufacturing optical fiber cable in which at least one light waveguide, either alone or as a bundle forming a core, is loosely inserted into an outer sheath with a definite length allocation between the length of the core and sheath characterized by passing the cable around a deflection roller and varying the diameter of the deflection roller to obtain the desired length allocation between the sheath and core.

Method for producing defined light waveguide lengths in an optical fiber

A cable, which is resistant to gnawing animals, includes a cable jacket surrounding cable parts such as optical waveguides and having an outer layer or jacket of a gnaw resistant material which is applied in a soft state either prior to or during installing of the cable and is then hardened to a solid state after installation of the cable.

Cable with an outer jacket of gnaw resistant material

In order to reach every void between the individual cable conductors, particularly when filling a multi-pair communication cable, the water repellent substance is supplied to the cable core in great excess; a filling basin surrounding the filling station proper collects the re-emerging excess substance.

Apparatus for applying a water repellent substance into a cable core

To provide symmetrical communication cables, especially wiring cables for telephone exchange installations, with connectors at the cable ends, in a simple manner, the individual groups of pairs of the cable core consist of a flat cable, which is formed into a group by twisting or torsioning. The pairs of each flat cable are connected to each other by means of flexible holding elements which are cemented or welded to the pairs on one side. In the manufacture of such a communication cable, the pairs of a group are first arranged along the generatrix of a cylinder and are temporarily secured in this configuration by means of a holding helix. The holding helix is cemented or welded to the surface of the pairs and subsequently cut open between two adjacent pairs in the same operation.

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Neustadt, Germany

Norbert Sutor