Apparatus for knitting variant height pile fabrics

Claim 1

IN A WARP KNITTING MACHINE HAVING A TRANSVERSE ROW OF SPACED KNITTING NEEDLES AND FIRST CHAIN WARP FEED GUIDES FOR GUIDING CHAIN WARPS ABOUT SAID NEEDLES TO KNIT CHAINS THEREFROM, AND DRIVE MEANS FOR SAID NEEDLES AND SAID FEED GUIDES; THE COMBINATION OF A FIXED PLATFORM SPACED REARWARDLY OF SAID NEEDLES, LOWER AND UPPER CARRIAGES MOUNTED BENEATH AND UPON SAID PLATFORM, RESPECTIVELY, A SECOND SERIES OF WEFT YARN FEED GUIDES ON SAID LOWER CARRIAGE AND A THIRD SERIES OF PILE YARN FEED GUIDES ON SAID UPPER CARRIAGE AND THROUGH WHICH RESPECTIVE WEFT YARNS AND PILE YARNS PASS TO THE FABRIC BEING KNIT, A PLURALITY OF LONGITUDINAL PILE WIRES HAVING FREE FRONT ENDS BETWEEN ADJACENT NEEDLES AND BEING CARRIED BY SAID PLATFORM, MEANS FOR IMPARTING TRANSVERSE RECIPROCATORY MOVEMENT TO SAID LOWER AND UPPER CARRIAGES IN TIMED RELATION TO THE OPERATION OF SAID NEEDLES AND SAID FIRST FEED GUIDES COMPRISING AT LEAST ONE SHAFT ADJACENT A CORRESPONDING END OF SAID PLATFORM AND BEING CONNECTED TO SAID DRIVE MEANS, A PAIR OF CAMS FIXED ON SAID SHAFT, FOLLOWER MEANS MOVABLE IN SUBSTANTIALLY FIXED RELATION TO SAID CARRIAGES AND BEING ENGAGEABLE BY THE RESPECTIVE CAMS, MEANS URGING SAID FOL-