Sewing – Stitch forming – Feeding work material
Patent
1991-07-22
1992-03-24
Schroeder, Werner H.
Sewing
Stitch forming
Feeding work material
112320, 112240, D05B 2704
Patent
active
050977784
ABSTRACT:
An upper cloth feeding device of a sewing machine which can have a presser foot shank attached to a presser bar such that the presser foot shank need not be detached from the presser bar for removing a removable shoe from the presser foot shank. The upper cloth feeding device has a shank holder which can hold the presser foot shank therein, an upper cloth feeding foot having friction surfaces on the underneath surface thereof, a cloth presser which slidably holds the upper cloth feeding foot with friction surfaces thereon in slits disposed therein, a cloth presser holder which pivotably holds both the cloth presser and the shank holder and a lever which is pivotably connected to side walls of the cloth presser holder and to a vertical plate of the upper cloth feeding foot by means of a connector piece. By downward motion of the lever, the upper cloth feeding foot is shifted backward while touching an upper cloth, and by upward motion of the lever, the upper cloth feeding foot is lifted away from the upper cloth so as to be shifted forward.
REFERENCES:
patent: 3800720 (1974-04-01), Niino
patent: 4503794 (1985-03-01), Ishihara et al.
patent: 4766828 (1988-08-01), Nomura et al.
patent: 4848254 (1989-07-01), Krowatchek et al.
Lewis Paul C.
Schroeder Werner H.
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