Method for Selective Display of Yarn in a Tufted Fabric With Double End Yarn Drives
First Claim
1. A method of operating a tufting machine of the type having front and rear rows of spaced needles disposed transversely across the width of the machine, a pattern yarn feed control for supplying yarns to the needles, a needle bar shifter for shifting for the transverse rows of needles, loopers operable to seize yarns from the needles, a control system for providing pattern information to the pattern yarn feed control mechanism and the needle bar shifter comprising the steps of:
- threading the front and rear transverse rows of needles with a plurality of different yarns forming a repeat;
feeding a backing fabric with a first face surface and an opposite back surface through the tufting machine and reciprocating the front and rear transverse rows of needles to cause the plurality of yarns to penetrate the face surface of the backing fabric;
seizing the yarns penetrating the face surface of the backing fabric with loopers;
laterally shifting the front and rear transverse rows of needles ;
controlling the feeding of yarns to the transverse rows of needles in accordance with the pattern information and in accordance with a pattern offset to form relatively high tufts of yarns to be displayed and relatively low tufts of yarns to be hidden.
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Accused Products
Abstract
A novel method of tufting carpets is provided to allow the use of four or more colors of yarn at sufficient stitch density to provide for a solid appearance of any of the selected colors at any location on the carpet, and utilizing natural tacking of rear yarns to minimize loose yarn on the backing.
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Citations
20 Claims
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1. A method of operating a tufting machine of the type having front and rear rows of spaced needles disposed transversely across the width of the machine, a pattern yarn feed control for supplying yarns to the needles, a needle bar shifter for shifting for the transverse rows of needles, loopers operable to seize yarns from the needles, a control system for providing pattern information to the pattern yarn feed control mechanism and the needle bar shifter comprising the steps of:
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threading the front and rear transverse rows of needles with a plurality of different yarns forming a repeat; feeding a backing fabric with a first face surface and an opposite back surface through the tufting machine and reciprocating the front and rear transverse rows of needles to cause the plurality of yarns to penetrate the face surface of the backing fabric; seizing the yarns penetrating the face surface of the backing fabric with loopers; laterally shifting the front and rear transverse rows of needles ; controlling the feeding of yarns to the transverse rows of needles in accordance with the pattern information and in accordance with a pattern offset to form relatively high tufts of yarns to be displayed and relatively low tufts of yarns to be hidden. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of tufting a patterned fabric from a plurality of colored yarns on a tufting machine comprising the steps of:
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a) providing a tufting machine with pattern information; b) threading a first plurality of yarns through a yarn feed pattern control device to a front row of needles, said needles of the front row being transversely spaced apart from one another by a gauge distance and the first plurality of yarns being distributed to the needles in a first repeating color sequence; c) threading a second plurality of yarns through a yarn feed pattern control device to a rear row of needles, said needles of the rear row being transversely spaced apart from one another by the gauge distance and the second plurality of yarns being distributed to the needles in a second repeating color sequence; d) feeding a backing fabric longitudinally through the tufting machine from front to back; e) reciprocating the front and rear rows of needles to penetrate the backing fabric to thereby carrying loops of the first and second pluralities of yarns from a back side of the backing fabric to a face side of the backing fabric; f) operating loopers on the face side of the backing fabric to seize loops of the first and second pluralities of yarns; g) operating the yarn feed pattern control device in accordance with the pattern information and a pattern offset to form relatively high loops and relatively low loops from the first and second pluralities of yarns such that the relatively high loops are displayed and relatively low loops are at least partially concealed; wherein at least one yarn from each adjacent first repeating color sequence and second repeating color sequence is displayed from each reciprocation of the needles. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification