Method and apparatus for making fiber glass pipe

Claim 2

APPARATUS FOR THE MANUFACTURE OF PAPER COMPRISING A THERMOSETTING RESIN MATRIX AND FIBER GLASS REINFORCEMENT, SAID APPARATUS INCLUDING A PLURALITY OF CYLINDRICAL MANDREL SECTIONS, MEANS CONNECTING MEANS COMPRISING IN END-TO-END RELATION, SAID CONNECTING MEANS COMPRISING DISPOSABLE BUSHINGS HAVING END PORTIONS ADAPTED TO FIT INTO THE ENDS OF ADJOINING MANDREL SECTIONS AND A CENTRAL CYLIN DRICAL PORTION SEPARATING THE END FACES OF ADJOINING MANDREL SECTIONS, SAID CENTRAL PORTION HAVING READILY DISTINGUISHABLE SURFAE DEPARTURE FROM THE REMAINDER OF ITS SURFACE WHICH IS REFLECTED BY A LIKE DEPARTURE IN THE SURFACE OF THE PIPE WHEN FORMED ON SAID MANDREL SECTIONS AND BUSHINGS, MEANS FOR MOVING SAID CONNECTED MANDREL SECTIONS LONGTIUDINALLY OF THE MANDREL AXIS, MEANS ADJACENT SAID CONNECTED MANDREL SECTIONS FOR WINDING FILAMENTARY FIBER GLASS AROUND THE SAME AS THEY MOVE LONGITUDINALLY, MEANS IN THE PATH OF THE WOUND MANDREL SECTIONS FOR IMPREGNATING THE SAME WITH THERMOSETTING RESIN, MEANS FOR HARDENING SAID RESIN, THEREBY TO FORM A CONTINUOUS FIBER GLASS REINFORCED RESIN PIPE, MEANS FOR THEREAFTER SEVERING SAID PIPE INTO SECTIONS COMPRISING CUTTER MEANS ADJACENT SAID PIPE FOR CUTTING TRANSVERSELY THROUGH THE PIPE AND BUSHING AT THE CENTRAL POSITION THEREOF ALONG A LINE COINCIDENT WITH SAID READILY DISTINGUISHABLE SURFACE DEPARTURE, AND MEANS FOR SEPARATING EACH SAID PIPE SECTION FROM THE MANDREL SECTION ON WHICH IT WAS WOUND.