Thread spreading apparatus for use in overlock sewing machine

Details Thread spreading apparatus for use in overlock sewing machine Thread spreading apparatus for use in overlock sewing machine

1994-06-06

1995-11-21

Crowder, C. D.

Sewing

Stitch forming

Overseaming

112302, 112163, D05B 6100, D05B 120

Patent

active

054677254

ABSTRACT:
A thread spreading apparatus for use in an overlock sewing machine capable of performing over-edge chain stitching and other stitching. The thread spreading apparatus uses a lower looper for over-edge chain stitching to allow a needle to surely drop into a triangle defined by a needle thread, a looper thread and the lower looper, thereby enabling multi-thread chain stitching and covering chain stitching to be performed without fail. The apparatus includes a thread spreading hook having hook portions with different heights for retaining needle threads and a projection formed on one of the hook portions. During stitching other than over-edge chain stitching, the hook portions of the thread spreading hook retain the needle threads when two needles drop, thereby allowing each needle to drop into a triangle defined by the looper thread, the lower looper and the corresponding needle thread. During over-edge chain stitching, the hook portions lie rearwardly of an idle chain stitch forming bore provided in a needle plate.

REFERENCES:
patent: 3150622 (1964-09-01), Sigoda
patent: 4267786 (1981-05-01), Hanyu et al.
patent: 4343250 (1982-08-01), Hanyu et al.
patent: 4546716 (1985-10-01), Babson et al.
patent: 4799439 (1989-01-01), Koshinaka et al.
patent: 4970976 (1990-11-01), Kitai et al.
patent: 5255622 (1993-10-01), Baba et al.
patent: 5269240 (1993-12-01), Holl et al.

Affiliated with

Also associated with

Rating

Thread spreading apparatus for use in overlock sewing machine does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Thread spreading apparatus for use in overlock sewing machine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thread spreading apparatus for use in overlock sewing machine will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1130368