Apparatus for weaving and knotting cut-pile fabrics

Claim 1

A CARPET LOOM COMPRISING, IN COMBINATION, HEDDLE MEANS FOR FORMING WARP SHEDS COMPRISED OF TWO WRAP SHEETS, EACH SHEET HAVING ONE WARP THREAD OF PAIRS OF WRAP THREADS WHICH ARE ARRANGED ACROSS THE WRAP; A ROW OF PAIRS OF FIRST AND SECOND GRIPPER MEANS DISPOSED IN ONE DIRECTION ACROSS ONE OF SAID WARP SHEETS, SAID PAIRS OF FIRST AND SECOND GRIPPER MEANS BEING SPACED FROM EACH OTHER CORRESPONDING TO THE SPACING BETWEEN SAID WARP THREADS OF ONE WARP SHEET, SAID FIRST AND SECOND GRIPPER MEANS OF EACH PAIR BEING MOVABLE IN SAID ONE DIRECTION BETWEEN A FIRST POSITION IN WHICH SAID SECOND GRIPPER MEANS IS LOCATED ON ONE SIDE OF SAID FIRST GRIPPER MEANS SO THAT SAID FIRST AND SECOND GRIPPER MEANS ARE LOCATED ON OPPOSITE SIDES OF ONE WARP THREAD OF ONE WARP SHEET, A SECOND POSITION IN WHICH SAID SECOND GRIPPER MEANS IS LOCATED ON THE OTHER SIDE OF SAID FIRST GRIPPER MEANS AND SPACED FROM THE SAME SO THAT SAID FIRST AND SECOND GRIPPER MEANS ARE LOCATED ON OPPOSITE SIDES OF ANOTHER WARP THREAD OF THE OTHER WARP SHEET AND SO THAT A KINK IS FORMED IN SAID ONE WARP THREAD, AND A THIRD POSITION IN WHICH SAID FIRST AND SECOND GRIPPER MEANS ARE ALIGNED, EACH PAIR OF FIRST AND SECOND GRIPPER MEANS BEING MOVABLE BETWEEN A RETRACTED POSITION LOCATED OUTSIDE OF SAID WRAP SHED, AN INTERMEDIATE POSITION PENETRATING SAID ONE WARP SHEET, AND AN OPERATIVE POSITION PENETRATING ALSO THE OTHER WARP SHEET BETWEEN SAID WARP THREADS; FIRST CONTROL MEANS FOR MOVING SAID FIRST AND SECOND GRIPPER MEANS OF EACH PAIR BETWEEN SAID FIRST, SECOND AND THIRD POSITIONS; SECOND CONTROL MEANS FOR MOVING SAID PAIRS OF GRIPPER MEANS FROM SAID RETRACTED POSITION TO SAID INTERMEDIATE AND OPERATIVE POSITIONS, AND BACK; HOLDING MEANS FOR HOLDING A ROW OF PILE TUFTS OUTSIDE OF THE OTHER WARP SHEET AND WITH THE TUFT ENDS IN THE REGION OF SAID OPERATIVE POSITION OF SAID PAIRS OF GRIPPER MEANS; THIRD CONTROL MEANS FOR OPENING AND CLOSING SAID FIRST AND SECOND GRIPPER MEANS;