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Method and apparatus for producing tufts from different yarns in longitudinal lines

  • US 5,224,434 A
  • Filed: 08/24/1992
  • Issued: 07/06/1993
  • Est. Priority Date: 02/11/1991
  • Status: Expired due to Term
First Claim
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1. A tufting machine having a frame through which a backing material is fed along a longitudinal path, a reciprocatable front needle bar disposed on one side of said backing material, transversely spaced front needles carried by said front needle bar for inserting first yarns carried by said front needles through said backing material for producing successive tufts of first yarns in said backing material upon reciprocation of said front needle bar, a reciprocatable rear needle bar disposed on said one side of said backing material, transversely spaced rear needles carried by said rear needle bar for inserting second yarns carried by said rear needles through said backing material for producing successive tufts of second yarns in said backing material upon reciprocating of said rear needle bar, means for reciprocating said front needle bar and said rear needle bar, a plurality of front loopers on the other side of said backing material for cooperating with said front needles, a plurality of rear loopers on the other side of said backing material for cooperating with said rear needles and control means for controlling the lateral shifting of said front needle bar and said rear needle bar, the improvement comprising said front loopers respectively being in longitudinal alignment, in the direction of feed, with said rear loopers, said front needles being of uniform gauge spacing and being provided with yarns in spaced groups such that the front needles sew yarns to produce selected longitudinal rows of tufts of first yarns, and said control means having means for shifting said front needle bar in gauge increments to sew yarns in other selected longitudinal rows and means for shifting said rear needle bar in increments so as to fill in tufts of said second yarns intermixing them with tufts of said first yarns in respective individual longitudinal rows for producing adjacent single parallel longitudinal rows of successive tufts in said backing material, each row containing tufts of first yarns and second yarns intermixed with each other.

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