Sewing – Stitch forming – Feeding work material
Patent
1979-05-18
1980-02-12
Hunter, H. Hampton
Sewing
Stitch forming
Feeding work material
112158E, 11212111, D05B 2700
Patent
active
041877942
ABSTRACT:
A work feeding mechanism for sewing machines including a feed dog with two pair of mutually orthogonal serrated teeth to drive a fabric past a stitch forming area in directions defined by mutually orthogonal axes. The feed dog is pivotally fastened to one extremity of a feed bar whose opposite extremity is suspended by gimbals from a slidable member carried in the bed. Means are disclosed to selectively impart oscillations of a varying amplitude and direction to the slidable member in timed synchronization to the motion imparted to the feed dog, to drive the feed dog in lateral and longitudinal directions of fabric feeding motion which extend along the length of the sewing machine bed and normal to the length of the bed. Fabric feeding information for the work feeding mechanism may be stored in an electronic memory to permit the production of ornamental stitch patterns.
REFERENCES:
patent: 2311222 (1943-02-01), Galkin
patent: 2731929 (1956-01-01), Ayres
patent: 3096737 (1963-07-01), Bono
Ross Roger J.
Tullman Edward J.
Bell Edward L.
Gillette Donald P.
Hunter H. Hampton
Smith Robert E.
The Singer Company
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