N.k.f. Groep B.v.

Johannis A Laugs

Johannes N Van Leeuwen

Hillebrand J Kraakman

Edward D Reinders

Gerrit Van Den Berg

Peter A Van Daalen

For rendering the cable core of a telecommunication cable longitudinally water-tight, a sealing material is applied in plugs and at regular distances in and around the cable core (C) moved at a constant speed, by means of an injection head (43) which can be displaced in a reciprocating movement in the longitudinal direction of the cable core (C); the sealing material is injected by means of a rotating injection nipple (47) in a single continuous jet rotating in a radial plane around the cable core (C) (FIG. 4).

Apparatus for rendering the cable core of a telecommunication cable

A method of and apparatus for making the cable core of a telecommunication cable water-tight in the longitudinal direction, in which a filling material having a base of petroleum jelly is heated to a temperature above the drop point, is supplied under pressure to a filling head (5), is divided into a number of jets distributed over the circumference of the cable core, is passed through the filling head (5) with simultaneous conversion of the static pressure into kinetic energy and is injected through the outer layer of the cable core into the heart of the cable core, in which a reconversion of the kinetic energy into static pressure is effected and all the interstices and gaps between the single wires of the cable core are filled with the filling material.

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Gouda, Netherlands

Johannis A Laugs