Device for forming cut pile fabrics and the like

Claim 1

A DEVICE FOR FORMING CUT PILE FABRICS AND THE LIKE BY PROJECTING A LOOP OF PILE YARN THROUGH A BACKING FABRIC AND CUTTING THE LOOP, COMPRISING AN OUTER SUPPORT FORMING A PART OF A FRAME FOR THE DEVICE, A NEEDLE CARRYING MEMBER CARRIED BY AND MOUNTED FOR RECIPROCATORY MOVEMENT WITH RESPECT TO SAID SUPPORT AND PROVIDED WITH A NEEDLE HAVING A POINTED FORWARD END FOR PIERCING A BACKING FABRIC, AND AN EYE IN SAID NEEDLE REARWARDLY OF SAID FORWARD END, AN ASSEMBLY ALSO CARRIED BY AND ARRANGED FOR LONGITUDINAL SLIDING MOVEMENT WITH RESPECT TO SAID SUPPORT IN A DIRECTION SUBSTANTIALLY PARALLEL TO THE DIRECTION OF RECIPROCATORY MOVEMENT OF SAID NEEDLE AND INCLUDING A LONGITUDINALLY EXTENDING MEMBER HAVING A FORWARD END PORTION DISPOSED SO AS TO BE PROJETABLE THROUGH AN APERTURE IN THE BACKING FABRIC FORMED BY THE NEEDLE ONCE THE NEEDLE IS PROJECTED AND EXTENDS THERETHROUGH, SAID LONGITUDINALLY EXTENDING MEMBER HAVING A SUBSTANTIALLY V-NOTCH FORWARD END AND HAVING LONGITUDINALLY EXTENDING GUIDE MEANS, AT LEAST ONE EDGE PORTION OF SAID V-NOTCH ADJACENT TO SAID GUIDE MEANS BEING SHARPENED TO FORM A KNIFE EDGE; AN INNER HOOK MEMBER PORTION WHICH FORMS A PART OF SAID ASSEMBLY AND EXTENDS THROUGH SAID GUIDE MEANS AND IS LONGITUDINALLY MOVABLE WITH RESPECT THERETO, SAID HOOK MEMBER PORTION BEING MOUNTED FOR SOLELY LONGITUDINAL SLIDING MOVEMENT WITH RESPECT TO THE V-NOTCH FORWARD END OF SAID LONGITUDINALLY EXTENDING MEMBER, SAID HOOK MEMBER PORTION HAVING (A) A FORWARD POSITION IN RESPECT TO SAID V-NOTCH FORWARD END, SUCH THAT A BIGHT OF A PILE YARN MAY BE MOVED PAST SAID HOOK MEMBER PORTION TO A POSITION BETWEEN IT AND THE APEX OF THE V OF SAID V-NOTCH FORWARD END AND (B) A REAR POSITION IN WHICH IT HAS MOVED TO THE REAR OF SAID APEX OF THE V, A COMMON ACTUATING MEANS, MEANS DRIVEN BY SAID ACTUATING MEANS FOR RECIPROCATING SAID NEEDLE CARRYING MEMBER WITH RESPECT TO SAID SUPPORT AND THEREBY FOR RECIPROCATING SAID NEEDLE TO CAUSE IT REPEATEDLY TO PENETRATE SAID BACKING FABRIC, MEANS DRIVEN BY SAID ACTUATING MEANS IN TIMED RELATION WITH THE RECIPROCATION OF SAID NEEDLE FOR RECIPROCATING SAID ASSEMBLY TO CAUSE SAID V-NOTCH FORWARD END THEREOF TO MOVE THROUGH AN APERTURE IN SAID BACKING FABRIC THROUGH WHICH SAID NEEDLE EXTENDS TO PROJECT THROUGH SAID BACKING FABRIC A BIGHT OF PILE YARN PASSING ACROSS SAID V-NOTCH AND BEHIND SAID HOOK MEMBER PORTION, AND MEANS ACTUATED IN A PREDETERMINED TIMED RELATION TO THE RECIPROCATIONS OF SAID NEEDLE AND SAID ASSEMBLY TO CAUSE SAID HOOK MEMBER PORTION TO MOVE FROM ITS FORWARD TO ITS REAR POSITION, SO AS TO SHEAR SAID BIGHT OF PILE YARN AT SAID KNIFE EDGE.

Claim 2

A DEVICE FOR FORMING CUT PILE FABRICS AND THE LIKE BY PROJECTING A LOOP OF PILE YARN THROUGH A BACKING FABRIC AND CUTTING THE LOOP, COMPRISING AN OUTER SUPPORT FORMING A PART OF A FRAME FOR THE DEVICE, A NEEDLE CARRYING MEMBER CARRIED BY AND MOUNTED FOR RECIPROCATORY MOVEMENT WITH RESPECT TO SAID SUPPORT AND PROVIDED WITH A NEEDLE HAVING A POINTED FORWARD END FOR PIERCING A BACKING FABRIC, AND AN EYE IN SAID NEEDLE REARWARDLY OF SAID FORWARD END, AN ASSEMBLY ALSO CARRIED BY AND ARRANGED FOR LONGITUDINAL SLIDING MOVEMENT WITH RESPECT TO SAID SUPPORT IN A DIRECTION SUBSTANTIALLY PARALLEL TO THE DIRECTION OF RECIPROCATORY MOVEMENT OF SAID NEEDLE AND INCLUDING A LONGITUDINALLY EXTENDING MEMBER HAVING A FORWARD END PORTION DISPOSED SO AS TO BE PROJETABLE THROUGH AN APERTURE IN THE BACKING FABRIC FORMED BY THE NEEDLE ONCE THE NEEDLE IS PROJECTED AND EXTENDS THERETHROUGH, SAID LONGITUDINALLY EXTENDING MEMBER HAVING A SUBSTANTIALLY V-NOTCH FORWARD END AND HAVING LONGITUDINALLY EXTENDING GUIDE MEANS, AT LEAST ONE EDGE PORTION OF SAID V-NOTCH ADJACENT TO SAID GUIDE MEANS BEING SHARPENED TO FORM A KNIFE EDGE; AN INNER HOOK MEMBER PORTION WHICH FORMS A PART OF SAID ASSEMBLY AND EXTENDS THROUGH SAID GUIDE MEANS AND IS LONGITUDINALLY MOVABLE WITH RESPECT THERETO, SAID HOOK MEMBER PORTION BEING MOUNTED FOR SOLELY LONGITUDINAL SLIDING MOVEMENT WITH RESPECT TO THE V-NOTCH FORWARD END OF SAID LONGITUDINALLY EXTENDING MEMBER, SAID HOOK MEMBER PORTION HAVING (A) A FORWARD POSITION IN RESPECT TO SAID V-NOTCH FORWARD END, SUCH THAT A BIGHT OF A PILE YARN MAY BE MOVED PAST SAID HOOK MEMBER PORTION TO A POSITION BETWEEN IT AND THE APEX OF THE V OF SAID V-NOTCH FORWARD END AND (B) A REAR POSITION IN WHICH IT HAS MOVED TO THE REAR OF SAID APEX OF THE V, A COMMON ACTUATING MEANS, MEANS DRIVEN BY SAID ACTUATING MEANS FOR RECIPROCATING SAID NEEDLE CARRYING MEMBER WITH RESPECT TO SAID SUPPORT AND THEREBY FOR RECIPROCATING SAID NEEDLE TO CAUSE IT REPEATEDLY TO PENETRATE SAID BACKING FABRIC, MEANS DRIVEN BY SAID ACTUATING MEANS IN TIMED RELATION WITH THE RECIPROCATION OF SAID NEEDLE FOR RECIPROCATING SAID ASSEMBLY TO CAUSE SAID V-NOTCH FORWARD END THEREOF TO MOVE THROUGH AN APERTURE IN SAID BACKING FABRIC THROUGH WHICH SAID NEEDLE EXTENDS TO PROJECT THROUGH SAID BACKING FABRIC A BIGHT OF PILE YARN PASSING ACROSS SAID V-NOTCH AND BEHIND SAID HOOK MEMBER PORTION, AND MEANS ACTUATED IN A PREDETERMINED TIMED RELATION TO THE RECIPROCATIONS OF SAID NEEDLE AND SAID ASSEMBLY TO CAUSE SAID HOOK MEMBER PORTION TO MOVE FROM ITS FORWARD TO ITS REAR POSITION, SO AS TO SHEAR SAID BIGHT OF PILE YARN AT SAID KNIFE EDGE.