Looper apparatus for forming cut pile and loop pile in the same row of stitching in a narrow gauge tufting machine

• US 4,103,629 A
• Filed: 06/21/1977
• Issued: 08/01/1978
• Est. Priority Date: 06/21/1977
• Status: Expired due to Term

• Current Assignee: Card LLC
• Original Assignee: Card LLC
• Inventors: Card, Roy T.
• Primary Examiner(s): Hunter, H. Hampton
• Application Number:
  US05/808,646
• Time in Patent Office: 406 Days
• Field of Search: 112/79 R, 112/79 A, 112/78, 112/270
• US Class Current: 112/80.51
• CPC Class Codes: D05C 15/22 Loop-catching arrangements, e.g. loopers; Driving mechanisms therefor
• CPC Class Codes: D05C 15/36 by selective cutting of loops

Abstract

A looper apparatus for a narrow gauge, multiple-needle tufting machine including transversely spaced loopers or hooks having spring clips or looper clips attached thereto and cooperating with knives to form cut pile and loop pile in the same row of stitching, in cooperation with a controlled yarn feed, in which the spring clips span or extend over the cutting zone of the hooks, so that each spring clip will not interfere with the adjacent knife of an adjacent hook.

Claims

1. In a narrow gauge tufting machine having means for supporting the base fabric for longitudinal movement in the feeding direction through said machine, a plurality of transversely spaced reciprocal needles for introducing yarns through the base fabric to form loops, means for selectively controlling the length of a yarn fed to each of said needles, looper apparatus comprising:

(a) a hook for each needle cooperating with said corresponding needle to form a loop thereon,

(b) each of said hooks having a shank and a bill projecting longitudinally from said shank and terminating in a free end portion,

(c) reciprocal hook bar means supporting said hooks transversely spaced apart with said free end portions extending in the direction opposite said feeding direction,

(d) a knife for each hook,

(e) knife supporting means supporting said knives transversely so that each knife cooperates with the bill of a corresponding hook for cutting a loop on said bill,

(f) a looper clip having a mounting portion, a clamping portion and a connecting portion connecting said mounting portion to said clamping portion,

(g) means securing said mounting portion in fixed relationship to said corresponding hook to normally bias said clamping portion against the free end portion of said bill to normally hold loops formed on said bill, but yieldable to predetermined yarn tension in a loop on said bill to force said clamping portion away from said bill to permit said tensioned loop to be withdrawn from the free end of said hook to form an uncut loop, and

(h) said connecting portion being above a knife adjacent said corresponding hook, and all portions of said looper clip being in transverse disalignment with said knife adjacent said corresponding hook.

2. The invention according to claim 1 in which each of said bills has a top edge and a bottom edge, each knife cooperating with the bottom edge of a corresponding hook to cut loops thereon to form cut pile loops, said connecting portion of said looper clip being spaced above the bottom edge of said corresponding hook.

3. The invention according to claim 2 in which said connecting portion is spaced above the top edge of said corresponding hook.

4. The invention according to claim 1 in which said mounting portion is fixed to said shank.

5. The invention according to claim 1 in which said hook has first and second planar sides, said looper clip being mounted against one of said planar sides, and said corresponding knife being mounted to cooperate with said second planar side of said corresponding hook, said knife being transversely disaligned with the adjacent loopr clip on said adjacent hook, so that none of said looper clips will interfere with the operation of said knives.

6. A looper apparatus for a tufting machine comprising:

(a) a hook comprising a shank having a mounting portion adapted to be mounted on the hook bar of a tufting machine, and a bill projecting from said shank and terminating in a free end portion,

(b) said bill having a top edge and a bottom edge converging into said free end portion,

(c) said bill comprising a cutting zone adapted to cooperate with a knife in said tufting machine to cut tufted loops on said bill,

(d) a spring clip having a body portion and a clamp portion,

(e) means mounting said body portion upon said hook to normally bias said clamp portion against the free end portion of said bill, said body portion extending above said cutting zone, and all portions of said spring clip being transversely disaligned with said cutting zone.

7. The invention according to claim 6 in which said spring clip is generally arch-shaped, convex upward, said body portion including a clip mounting portion fixed to said shank and an upper connecting portion connecting said clip mounting portion to said clamp portion, said connecting portion being spaced above the top edge of said bill.