Heat exchange apparatus

Claim 1

A YARN HANDLING APPARATUS COMPRISING A CYLINDRICAL SHELL OVER WHICH YARN IS HEATED AND ADVANCED, A SHAFT CONNECTED TO THE CYLINDRICAL SHELL AND A SUPPORT HOUSING FOR THE SHAFT, SAID SHELL HAVING A CLOSED END OUTBOARD FROM THE SHAFT AND AN INTERIOR PERIPHERAL FRUSTO-CONICAL SURFACE SLOPING OUTWARDLY IN A GRADUAL MANNER FROM SUCH END AND TERMINATING IN A GROOVE RECESSED IN THE PERIPHERY OF THE SHELL AND A PLURALITY OF SPACED ORIFICES COMMUNICATING WITH THE GROOVE AND WITH A COLLECTOR CHAMBER EXTERNAL OF THE SHELL, THE SAID SHAFT BEING ROTATABLY JOURNALED IN SPACED BEARINGS IN THE SUPPORT HOUSING AND HAVING AN INTERNAL PASSAGEWAY COMMUNICATING WITH THE INTERIOR PERIPHERAL SURFACE OF SAID SHELL, AND THE SAID SUPPORT HOUSING FOR THE SHAFT COMPRISING CONDENSIBLE VAPOR INLET MEANS COMMUNICATING WITH THE INTERNAL PASSAGEWAY OF THE SHAFT, A PAIR OF SPACED BEARINGS LOCATED ON EITHER SIDE OF SUCH CONDENSIBLE VAPOR INLET MEANS, A FIRST SET OF ROTARY SEALS INTERPOSED BETWEEN THE CONDENSIBLE VAPOR INLET MEANS AND THE ADJACENT SPACED BEARINGS TO ENCLOSE SAID CONDENSIBLE VAPOR INLET MEANS, A SECOND SET OF ROTARY SEALS LOCATED ALONG THE SHAFT EXTERIORLY TO THE PAIR OF SPACED BEARINGS AND IN OPPOSED RELATIONSHIP TO THE FIRST SET OF SEALS TO ENCLOSE EACH OF SAID BEARINGS THEREBETWEEN, PRESSURIZED LUBRICANT-COOLANT INLET MEANS LOCATED BETWEEN THE BEARINGS AND THE FIRST SET OF ROTARY SEALS, AND EXIT MEANS LOCATED BETWEEN THE BEARINGS AND SAID SECOND SET OF SEALS FOR REMOVING SPENT LUBRICANT-COOLANT.