Means for cooling a cable passing through a cable-sheathing press

Claim 1

A CABLE SHEATHING PRESS INCLUDING A MATRIX HAVING AN OPENING EXTENDING THERETHROUGH, A HOLLOW MANDREL DISPOSED IN AXIAL ALIGNMENT WITH SAID OPENING, THE FORWARD END OF SAID MANDREL TERMINATING IN SPACED RELATION TO THE REAR EDGE OF THE OPENING IN SAID MATRIX TO PROVIDE AN ANNULAR GAP FOR THE FLOW OF EXTRUSION MATERIAL TO FORM A SHEATH ON A CABLE PASSING THROUGH SAID MANDREL AND MATRIX AND COOLING MEANS FOR THE CABLE, SAID COOLING MEANS COMPRISING INNER, INTERMEDIATE AND OUTER RADIALLY SPACED CONCENTRIC TUBULAR MEMBERS DISPOSED WITHIN SAID MANDREL, SAID OUTER TUBULAR MEMBER BEING SPACED FROM THE INNER WALLS OF SAID MANDREL TO PROVIDE A COOLING AIR PASSAGE THEREBETWEEN THE SPACES BETWEEN SAID INNER, IN TERMEDIATE AND OUTER TUBULAR MEMBERS BEING CLOSED AT THE FORWARD AND REAR ENDS WITH THE SPACE B ETWEEN SAID INNER AND INTERMEDIATE TUBULAR MEMBERS COMMUNICATING WITH THE SPACE BETWEEN SAID INTERMEDIATE AND OUTER TUBULAR MEMBERS ADJACENT THE FORWARD ENDS TO PROVIDE COOLING WATER PASSAGES, A WATER INLET FITTING FOR ONE WATER PASSAGE AND A WATER OUTLET FITTING FOR THE OTHER WATER PASSAGE, CIRCULAR SEALING MEANS ADJACENT THE REAR END OF SAID INNER TUBULAR MEMBER FOR ENGAGING THE OUTER SURFACE OF A CABLE PASSING THERETHROUGH TO PROVIDE AN AIRTIGHT SEAL, THE INNER DIAMETER OF SAID SEALING MEANS BEING LESS THAN THE INNER DIAMETER OF SAID INNER TUBULAR MEMBER, WHEREBY AN AIR PASSAGE IS PROVIDED BETWEEN SAID INNER TUBULAR MEMBER AND A CABLE PASSING THERETHROUGH, SAID INNER TUBULAR MEMBER TERMINATING AT THE FORWARD END WITHIN SAID MANDREL IN CLOSELY SPACED RELATIONSHIP TO THE FORWARD END OF SAID MANDREL, AND AN AIR CONNECTION FITTING ON SAID INNER TUBULAR MEMBER, WHEREBY AIR MAY FLOW THROUGH THE AIR PASSAGE BETWEEN SAID INNER TUBULAR MEMBER AND SAID CABLE IN EITHER DIRECTION TO COOL SAID CABLE AND AROUND THE FORWARD END OF SAID INNER TUBULAR MEMBER AND THROUGH THE AIR PASSAGE BETWEEN SAID OUTER TUBULAR MEMBER AND SAID MANDREL IN EITHER DIRECTION, SAID AIR BEING COOLED BY WATER FLOWING THROUGH SAID COOLING WATER PASSAGES.