Sewing – Elements – Presser devices
Patent
1986-10-29
1988-01-05
Falik, Andrew M.
Sewing
Elements
Presser devices
112236, 1122661, D05B 2902
Patent
active
047168463
ABSTRACT:
A sewing machine which is used with manual feed movement of a sewing material has a holding device for the material that is effective during the first phases of stitching of a seam section, by which the first thread knot is held from becoming undone when short thread ends and a large feed movement are used. In a first embodiment, the holding device includes a holding foot, by a drive mechanism in addition to a presser foot which is periodically moved up and down by a drive mechanism, and a controllable drive for the holding foot. In a second embodiment, the holding device includes a presser foot, a compression spring and a decoupling mechanism by which the presser foot can be disconnected from its drive mechanism.
REFERENCES:
patent: 662505 (1900-11-01), Steward
patent: 1280947 (1918-10-01), Beckwith
patent: 2242688 (1941-05-01), Unger
patent: 2413277 (1946-12-01), Zeier
patent: 3282237 (1966-11-01), Niekrawietz
patent: 4454830 (1984-06-01), Bennett
patent: 4513675 (1985-04-01), Meyer et al.
patent: 4524707 (1985-06-01), Sander
patent: 4538533 (1985-09-01), Ohchi et al.
patent: 4587911 (1986-05-01), Kinoshita
Link Gunter
Schneider Franz
Wenz Herbert
Falik Andrew M.
Pfaff Industriemaschinen GmbH
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