Machine for making carcasses for vehicle tires

Claim 1

IN A TIRE CARCASS BUILDING MACHINE HAVING A FRAME, A DRUM RECIPROCABLE AXIALLY IN THE FRAME, AND FABRIC FORMING MEANS IN THE FRAME SPACED FROM THE DRUM, SAID FABRIC FORMING MEANS COMPRISING RADIALLY MOVABLE INNER AND OUTER GRIPPER ELEMENTS, FIRST AND SECOND BIASING MEANS CONNECTED TO SAID INNER AND OUTER GRIPPER ELEMENTS RESPECTIVELY AND URGING THEM INWARDLY, HOLDING MEANS ADAPTED SELECTIVELY TO BE MADE EFFECTIVE FOR TEMPORARILY HOLDING SAID DRUM IN PREDETERMINED SPACED RELATION TO SAID GRIPPER ELEMENTS, MEANS FOR OPENING SAID GRIPPER ELEMENTS TO RECEIVE THEREBETWEEN A MARGINAL PORTION OF FABRIC PLACED ON SAID DRUM, FIRST ACTUATING MEANS OPERABLE TO ENGAGE AND MOVE SAID INNER GRIPPER ELEMENT OUTWARDLY TO GRIP SAID MARGINAL FABRIC PORTION BETWEEN SAID GRIPPER ELEMENTS, SECOND ACTUATING MEANS OPERATIVELY CONNECTED TO SAID DRUM AND OPERABLE WHEN SAID HOLDING MEANS IS MADE INEFFECTIVE TO MOVE THE DRUM TOWARD SAID GRIPPER ELEMENTS, THIRD ACTUATING MEANS OPERATIVELY CONNECTED TO SAID FIRST ACTUATING MEANS AND OPERABLE TO WITHDRAW THE LATTER FROM SAID GRIPPER MEANS TO CAUSE INWARD MOVEMENT OF THE LATTER BY SAID BIASING MEANS, CONTROL MEANS OPERABLE IN RESPONSE TO SAID OUTWARD MOVEMENT OF SAID INNER GRIPPER ELEMENT INTO GRIPPING RELATION WITH SAID OUTER GRIPPER ELEMENT TO INITIATE OPERATION OF SAID SECOND AND THIRD ACTUATING MEANS, AND ABUTMENT MEANS OPERABLE DURING INWARD MOVEMENT OF SAID GRIPPER ELEMENTS AND THE SIMULTANEOUS MOVEMENT OF SAID DRUM TOWARD SAID GRIPPER ELEMENTS, TO ABUT AND HALT SAID OUTER GRIPPER ELEMENT WHILE THE INWARD MOVEMENT OF THE INNER GRIPPER ELEMENT CONTINUES, WHEREBY THE GRIPPING FORCE OF SAID ELEMENT ON SAID MARGINAL FABRIC PORTION IS REDUCED SO THAT THE LATTER SLIPS BETWEEN SAID GRIPPER ELEMENTS.