Chain stitch sewing mechanism

Details Chain stitch sewing mechanism Chain stitch sewing mechanism

2005-12-13

2005-12-13

Izaguirre, Ismael (Department: 3765)

Sewing

Stitch forming

Chain or double chain

C112S221000, C112S470120

Reexamination Certificate

active

06973887

ABSTRACT:
In a chain stitch sewing mechanism with a sewing head movable parallel to the sewn material plane, including a needle rod with a needle drive for reciprocating a thread carrying needle, a catcher drive for reciprocating a needle shaped thread catcher with an open catching hook. The needle and thread catcher have movement paths forming a sharp angle with one another whose apex lies beneath the sewn material plane and the needle and catcher being so controlled such that a loop formed by the withdrawal of the needle is caught by the thread catcher and pulled through the material. A thread puller on a movable thread arm is moved towards the thread catcher and cooperates with the thread catcher for deflecting the loop hanging off the thread catcher at an angle to the movement path of the thread catcher toward the side opposite to that of the hook opening.

REFERENCES:
patent: 1590686 (1926-06-01), Holtermand
patent: 1714928 (1929-05-01), Sigoda
patent: 2369183 (1945-02-01), Sigoda
patent: 2533292 (1950-12-01), Sigoda
patent: 5901655 (1999-05-01), Sadasue
patent: 6357371 (2002-03-01), Moll et al.
patent: 197 51 011 (1999-05-01), None

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