Sewing – Stitch forming – Feeding work material
Patent
1980-10-27
1983-01-18
Hunter, H. Hampton
Sewing
Stitch forming
Feeding work material
D05B 2700
Patent
active
043686834
ABSTRACT:
A sewing machine with a feed dog vertically displaceable between an upper operative position and a lower inoperative position has a control element connected with a control shaft of a control motor and turnable by the latter within a predetermined range in two opposite directions, a cam element displaceable from an inoperative position to an operative position by the control element during turning of the latter in one of the directions, a cam follower normally engaging the cam element and displaceable from an inoperative position to a set position by the cam element during displacement of the latter from its inoperative position to its operative position and being further displaceable to an operative position by the control element during turning of the latter in the other of the directions, and a transmitting element operatively connected with the cam follower and the feed dog and operated by the cam follower during displacement of the latter from its set position to its operative position so as to displace the feed dog from its upper operative position to its lower operative position.
REFERENCES:
patent: 2496817 (1950-02-01), Schulthess
patent: 2681628 (1954-06-01), Hoffmoister
patent: 2682243 (1954-06-01), Matuzas
patent: 4159004 (1979-06-01), Ross
patent: 4236469 (1980-12-01), Takenoya et al.
Hunter H. Hampton
Janome Sewing Machine Co. Ltd.
Striker Michael J.
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