Asbestos yarn and method of producing friction lining therefrom

Claim 1

THE METHOD OF MAKING A FRICTION LINING FROM ASBESTOS YARN MADE FROM SHORT ASBESTORS FIBERS CONSISTING ESSENTIALLY OF THE STEPS OF PASSING A YARN CORE THROUGH A TREATING ZONE CONTAINING A LIQUID RESIN-RUBBER COMPOSITION TO CAUSE THE YARN TO PICK UP A SURFACE COATING OF SAID COMPOSITION, PASSING THE COATED YARN WITH THE COATING STILL TACKY THROUGH A ZONE CONTAINING SHORT ASBESTOS FIBERS SUSPENDED IN AN AIR CURRENT UNDER CONDITIONS TO CAUSE SAID FIBERS TO BECOME EMBEDDED IN SAID COATING, DRYING THE VEHICLE OF SAID COATING TO BIND THE FIBERS TO SAID CORE, PASSING THE COATED YARN THROUGH ANOTHER TREATING ZONE, CONTAINING A LIQUID RUBBER-RESIN COMPOSITION TO PICK UP A FURTHER COATING OF SAID COMPOSITION, PASSING THE YARN WITH SAID COATING STILL TACKY THROUGH A SECOND ZONE CONTAINING SHORT ASBESTOS FIBERS SUSPENDED IN AN AIR CURRENT UNDER CONDITIONS TO CAUSE THE FIBERS TO BE PICKED UP BY SAID LAST COATING, DRYING THE YARN TO REMOVE THE VEHICLE AND CAUSE SAID LAST FIBERS TO BE BONDED TO SAID YARN, FABRICATING SAID COATED YARN INTO A TAPE, IMPREGNATING SAID TAPE WITH SAID RUBBER-RESIN COMPOSITION, AND PRESSURE MOLDING THE SAME TO FORM A FRICTION LINING AND HEAT CURING THE RUBBER-RESIN COMPOSITION.