Sewing machine material guiding device

Details Sewing machine material guiding device Sewing machine material guiding device

1984-03-28

1985-07-02

Hunter, Hampton H.

Sewing

Stitch forming

Feeding work material

112153, D05B 2708, D05B 3510

Patent

active

045261172

ABSTRACT:
A sewing machine with a guiding device for the automatic sewing of a curved seam parallel to the edge. Provided are an edge guide ruler and a device with a first setting means to raise and lower a pressure pad disposed at a lateral distance from the needle and exerting a braking force on the workpiece and effecting, in interaction with the material feeder, the workpiece alignment motion. For more precise control the pressure pad is movable transverse to the workpiece direction by a second setting means to vary its lateral distance from the needle, and the setting means is controllable as a function of predeterminable part sections of the entire seam. This makes it possible to cause the pressure pad to contact the workpiece in the respective center of rotation of outside curves.

REFERENCES:
patent: 4100864 (1978-07-01), Babson et al.
patent: 4135460 (1979-01-01), Biotteau
patent: 4226197 (1980-10-01), Pollmeier et al.
patent: 4296700 (1981-10-01), Jehle et al.
patent: 4312286 (1982-01-01), Biotteau
patent: 4423690 (1984-01-01), Willenbacher et al.

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