Passageway structure for liquid coolant at gun and transformer ends of welding cable having novel internal surface bearing for alternate polarity strands

Claim 1

A CONNECTOR UNIT FOR AN ALTERNATING POLARITY WATERCOOLED ELECTRIC WELDING CABLE, COMPRISING IN COMBINATION A FLEXIBLE COLLAR SURROUNDING THE CABLE IN THE VICINITY OF EACH END OF THE CABLE THEREBY PROVIDING A CIRCUMFERENTIAL BEARING SURFACE FOR THE CABLE ROPES; AN INTERNALLY LOCATED SUPPORT ELEMENT IN THE FORM OF A CENTRALLY BORED BODY HAVING HELICAL GROOVES IN ITS PERIPHERY, EACH OF SAID GROOVES SUPPORTING ONE OF THE ROPES CONSTITUTING THE CABLE; THE HELICAL ANGLE OF SAID GROOVES BEING APPROXIMATELY EQUAL TO THE HELICAL ANGLE OF THE ROPES CONSTITUTING THE CABLE, SAID FLEXIBLE COLLAR AND INTERNAL BODY PROVIDING AT THE NEAR END PORTIONS OF THE CABLE KNOWN TO BE SUSCEPTIBLE TO HOT SPOTS, SLIDING SURFACES FOR THE ROPE CONDUCTORS ENABLING FREE MOVEMENT OF THE ROPES AND PREVENTING CHAFING OF THE CONDUCTIVE WIRE STRANDS OF THE ROPES WHICH WOULD OTHERWISE OCCUR UPON BENDING AND TWISTING OF THE CABLE WHEN IN USE; PERFORATED TUBULAR MEANS LOCATED CENTRALLY OF SAID CABLE FOR CARRYING COOLANT FLUID INTRODUCED AT THE WELDING GUN END OF THE CABLE AND