Automatic thread cutting device for sewing machine provided...

Details Automatic thread cutting device for sewing machine provided... Automatic thread cutting device for sewing machine provided...

2008-06-03

2008-06-03

Welch, Gary L. (Department: 3765)

Sewing

Elements

Thread cutting, severing or breaking

C112S285000, C112S300000

Reexamination Certificate

active

07380511

ABSTRACT:
Disclosed is an automatic thread cutting device for a sewing machine which is provided with a horizontal loop taker, wherein a thread catching member (4) is operated in response to a thread cutting instruction to reciprocatingly move with a movable blade (5) along a predetermined course, the thread catching member (4) normally catching the upper thread when moving in the return-way of reciprocation to guide the upper thread to a fixed blade (14) which is provided to cut the upper thread in cooperation with the movable blade (5), and wherein a thread regulating means is provided to cut the lower thread (29d) together with the upper thread, the thread regulating means being operated to press down the lower thread (29d) to a position where the lower thread (29d) is caught by the thread catching member (4) in addition to the upper thread when the thread catching member (4) is moving in the return-way of reciprocation.

REFERENCES:
patent: 5131340 (1992-07-01), Tajima et al.
patent: 5289791 (1994-03-01), Sanders et al.
patent: 5623887 (1997-04-01), Tajima et al.
patent: 5784989 (1998-07-01), Shimizu et al.
patent: 6152058 (2000-11-01), Tajima et al.
patent: 6276289 (2001-08-01), Wahlstrom
patent: 2003/0183146 (2003-10-01), Usa
patent: 06-339592 (1994-12-01), None

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