Sewing – Stitch forming – Feeding work material
Patent
1982-05-14
1984-03-13
Schroeder, Werner H.
Sewing
Stitch forming
Feeding work material
D05B 2708
Patent
active
044360452
ABSTRACT:
A differential feed mechanism is provided for a high speed industrial sewing machine. The differential mechanism includes separate driving mechanisms for each of the two feed dogs mounted on separate feed bars, both mechanisms being driven from a common input shaft. Separate adjusting devices are provided for each of the feed dog driving mechanisms to adjust individually, rapidly and at will, the length of the horizontal feed stroke of each feed dog.
REFERENCES:
patent: 3382827 (1968-05-01), Von Hagen
patent: 3450079 (1969-06-01), Lukin
patent: 3611817 (1971-10-01), Smith
Bonham Richard T.
Dinkelacker Paul H.
Sigiols John P.
Falik Andrew M.
Harbst John W.
Schaerli John A.
Schroeder Werner H.
Union Special Corporation
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