Machine for making pile fabric formed by tufts of yarn on a web of backing material

Claim 1

A MACHINE FOR THE MANUFACTURE OF PILE FABRIC FORMED BY TUFTS OF YARN ARRANGED IN ROWS LONGITUDINALLY AND TRANSVERSELY ON A WEB OF BACKING MATERIAL, COMPRISING A ROW OF TUFT FORMING MEANS, INCLUDING A NEEDLE BAR AND A ROW OF TUFTING NEEDLES POSITIONED ON AND ALIGNED LONGITUDINALLY OF SAID BAR, FOR PASSING YARN THROUGH SAID BACKING MATERIAL FROM ONE SIDE AND RETAINING A LOOP ON THE OPPOSITE SIDE FOR EACH TUFT, AND MEANS TO CONVEY SAID WEB OF BACKING MATERIAL IN A CONSTANT UNIDIRECTIONAL PATH LONGITUDINAL OF SAID WEB PAST SAID ROW OF TUFT FORMING MEANS AND AT AN ACUTE ANGLE TO SAID ROW OF NEEDLES AND SAID NEEDLE BAR, SAID ROW OF NEEDLES EXTENDING ACROSS SAID WEB AND RECIPROCATING IN ONE POSITION THROUGH SAID WEB SO THAT SAID ROW OF TUFT FORMING MEANS FORMS SUCCESSIVE ROWS OF TUFTS EXTENDING ENTIRELY ACROSS SAID WEB AT AN ACUTE ANGLE TO THE LENGTH OF SAID WEB UPON RECIPROCATION OF SAID ROW OF NEEDLES AS SAID WEB MOVES THROUGH SAID PATH.