Sewing – Special machines – Buttonhole
Patent
1975-02-05
1976-09-21
Hunter, H. Hampton
Sewing
Special machines
Buttonhole
D05C 1518
Patent
active
039812537
ABSTRACT:
This device for making tuft figured fabric comprises, between the feed bobbin containing the tufting thread and the fabric to be tufted, a friction roller adapted to be shifted for engaging either of a plurality of cylinders driven at different speeds; said roller is mounted at one end of a rigid support having its opposite end responsive to a snap-action spring having an intermediate unstable position; the support is connected intermediate its ends to one end of a two-armed bell-crank lever fulcrumed at its apex to a fixed pivot pin and connected at its opposite end to another snap-action spring. Adjacent said snap-action springs each of said support and lever carries a stud engaging a vertically elongated aperture formed in a loop formed in a corresponding jacquard cord. Each friction roller has on its outer periphery an annular tire of resilient soft material formed with transverse grooves and adapted to engage the cylinder surfaces.
REFERENCES:
patent: 2058101 (1936-10-01), Perry
patent: 2782741 (1957-02-01), Smith
patent: 2782905 (1957-02-01), Smith
patent: 2880684 (1959-04-01), Masland
patent: 3387578 (1968-06-01), McCutchen
Hunter H. Hampton
Verdol S.A.
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