High speed pattern changer

Claim 1

IN A LOOM HAVING MEANS FOR FORMING A SHED FROM LONGITUDINAL EXTENDING WARP THREADS, AND MEANS TO MOVE A FILLING THREAD SUBSTANTIALLY TRANSVERSELY THROUGH THE SHED TO WEAVE A FABRIC, SAID SHED FORMING MEANS COMPRISING A PLURALITY OF SPACED PARALLEL HEDDLE FRAMES EXTENDING TRANSVERSELY ACROSS THE WARP THREADS, EACH OF SAID FRAMES CARRYING A PLURALITY OF HEDDLE WIRES EACH HAVING AN EYE TO ACCOMMODATE A WARP THREAD, MEANS MOUNTING SAID HEDDLE FRAMES FOR VERTICAL RECIPROCATION; THE COMBINATION THEREWITH OF A PLURALITY OF CAM SHAFTS CORRESPONDING IN NUMBER TO THE NUMBER OF HEDDLE FRAMES, A CAM CARRIED BY EACH CAM SHAFT, DRIVE MEANS FOR SAID CAM SHAFTS, SAID DRIVE MEANS BEING NORMALLY DISCONNECTED FROM SAID CAM SHAFTS, MEANS SELECTIVELY TO CONNECT SAID DRIVE MEANS TO SAID CAM SHAFTS FOR A PREDETERMINED INTERVAL, LINKAGE BETWEEN EACH OF SAID CAMS AND AN ASSOCIATED HEDDLE FRAME TO RECIPROCATE THE LATTER TO FORM THE SHED WITH ROTATION OF SAID CAMS, EACH OF SAID CAMS HAVING ARCUATE PORTIONS DURING WHICH NO DRIVING MOTION WILL BE IMPARTED TO THE ASSOCIATED LINKAGE, WHEREBY SAID CAMS WILL IMPART DRIVING MOTION TO THE ASSOCIATED LINKAGE ONLY AFTER SAID DRIVE MEANS HAS BEEN CONNECTED TO SAID CAM SHAFT AND SAID CAM HAS ROTATED A PREDETERMINED AMOUNT.