Sewing – Special machines – Buttonhole
Patent
1976-12-02
1978-08-15
Hunter, H. Hampton
Sewing
Special machines
Buttonhole
D05C 1534
Patent
active
041064160
ABSTRACT:
Apparatus for developing multi-colored complex patterns in textile carpets formed by a yarn tufting operation, employing a scanner to scan and record color data from replicas or artists' renditions of the patterns to be tufted, a programmable read only memory to store the color data descriptive of the scanned patterns after electronic digitizing of the data, and a microprocessor and logic circuits to select a desired pattern from the memory and provide the color data for the selected pattern to individual yarn control assemblies at spaced dyeing stations of different colors. Individual yarn ends passing through the spaced dye stations are selectively dyed along their length at predetermined positions according to the color data provided to the yarn control assemblies at the spaced dye stations, the yarn ends then being delivered to a tufting machine to produce the selected multi-colored complex pattern. Delivery of color data from memory is controlled by the displacement of the backing applied to the carpet, by means of clocks generated by the backing linear displacement. Delivery of color data to the yarn control assemblies at each dye station, for dyeing of each yarn end at predetermined positions along its length, is controlled by the displacement of the yarn. Clocks are generated by the yarn linear displacement and control logic circuits to delay delivery of color information to the yarn control assemblies at each dye station depending upon the physical displacement of that station in relation to the other dye stations. Logic circuits are provided to eliminate vibrational and reverse motion effects on the backing and yarn clocks, and to compensate for low yarn speed on starting and/or stopping of the machinery. Logic circuits also are provided to interchange the colors in the pattern of a tufted carpet produced from a given selected pattern that has been scanned.
REFERENCES:
patent: 2804764 (1957-09-01), Runton
patent: 3074632 (1963-01-01), Braun et al.
patent: 3416056 (1968-12-01), Motooka et al.
patent: 3722434 (1973-03-01), Strother et al.
patent: 3863310 (1975-02-01), Ochsner
patent: 3895355 (1975-07-01), Shorrock
patent: 4015550 (1977-04-01), Bartenfeld et al.
patent: 4033154 (1977-07-01), Johnson
Blackstone, Jr. James Otto
Strother Fred Pickett
Hunter H. Hampton
West-Point Pepperell, Inc.
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