Yarn saving method and apparatus

Details Yarn saving method and apparatus Yarn saving method and apparatus

1982-04-22

1983-10-25

Feldbaum, Ronald

Sewing

Special machines

Buttonhole

112 79R, D05C 1532, D05C 1528

Patent

active

044112076

ABSTRACT:
A yarn saving apparatus for conventional tufting machines which includes means for sensing the lateral movement of a needle bar or other laterally shiftable patterning device, and means responsive to the lateral movement of the needlebar or other lateral shifting device for slowing the speed at which yarn is fed to the outermost groups of needles of the needle bar, thereby withdrawing yarn from loops formed thereby, so as to prevent wastage of the yarn which would otherwise be tufted into a wastage area at the outer longitudinal border of the carpet backing. Yarn is provided to the groups of tufting needles at the normal rate when the tufting needles are positioned over an area which is to be tufted, and yarn is provided to the groups of tufting needles at a slower rate which effectively withdraws yarn from loops in the wastage area when the groups of needles are positioned over the wastage area.

REFERENCES:
patent: 3095841 (1963-07-01), Ballard et al.
patent: 3301205 (1967-01-01), Card
patent: 3396687 (1968-08-01), Nowicki
patent: 3605660 (1971-09-01), Short
patent: 3847098 (1974-11-01), Hammel
patent: 3926132 (1975-12-01), Lear et al.
patent: 3934524 (1976-01-01), Smith
patent: 4134348 (1979-01-01), Scott
patent: 4173192 (1979-11-01), Schmidt

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