Thread cutter mechanism for sewing machines

Details Thread cutter mechanism for sewing machines Thread cutter mechanism for sewing machines

1974-07-22

1976-02-03

Guest, Alfred R.

Sewing

Elements

Attachment holders

D05B 6500

Patent

active

039358275

ABSTRACT:
This disclosure relates to a thread cutter mechanism for sewing machines wherein at the end of a stitching operation, a spreader member extends into the needle thread loop and expands the same transversely so that both the bobbin thread and the needle thread may be severed in a single operation. Cooperating cutter knives, mounted to swing arcuately, cooperate with the loop spreader to effect the necessary thread cutting. In addition, there is provided a bobbin thread pull-off member which serves to pull thread off of the bobbin prior to the severing of the bobbin thread by the cutter knives. The cutter knives, loop spreader and bobbin thread pull-off member are all actuated in an arcuate path by means of slide bars which are actuated by mechanism controlled in timed relation to the operation of the sewing machine.

REFERENCES:
patent: 2070029 (1937-02-01), Spaine
patent: 2335827 (1943-11-01), Gunther
patent: 2474710 (1949-06-01), Wood
patent: 2968269 (1961-01-01), Smith et al.
patent: 3386402 (1968-06-01), Ross
patent: 3443540 (1969-05-01), Hannemann et al.
patent: 3602170 (1971-08-01), Sakashita
patent: 3605664 (1971-09-01), Hedegaard
patent: 3709176 (1973-01-01), Papajewski
patent: 3776161 (1973-12-01), Papajewski et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2117579