Thread trimming device for a sewing machine

Details Thread trimming device for a sewing machine Thread trimming device for a sewing machine

1993-08-11

1994-12-13

Crowder, Clifford D.

Sewing

Elements

Thread cutting, severing or breaking

D05B 6500

Patent

active

053720792

ABSTRACT:
A thread trimming device for a sewing machine in which a movable knife coupled to a thread trimmer lever by way of a link mechanism is turned to cut sewing threads in cooperation with a fixed knife, the first projection of the thread trimmer lever engaging in the cam groove of a thread trimmer cam, comprises a thread trimmer positive motion bracket having a second projection capable of engaging in the positive motion cam groove of a thread trimmer positive motion cam so as to keep the engagement of the first projection with the cam groove after the second projection thereof engages the positive motion cam groove until it is disengaged therefrom. Since the time of completing the thread trimming can be set by the positive motion cam groove of the thread trimmer positive motion cam, the timing of the thread trimming can be adjusted with certainty. Furthermore, the operating time of the driving means can be remarkably reduced.

REFERENCES:
patent: 4365568 (1982-12-01), Ross
patent: 4401045 (1983-08-01), Russell
patent: 4586449 (1986-05-01), Raupach

Affiliated with

Also associated with

Rating

Thread trimming device for a 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 trimming device for a sewing machine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thread trimming device for a sewing machine will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1187137