Cover stitch sewing machine

Sewing – Elements – Take-ups

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C112S254000, C112S200000

Reexamination Certificate

active

07111568

ABSTRACT:
In a cover stitch sewing machine which forms double chain stitch seams, needle threads are pulled out from the needle thread tensioning devices, passing over a thread hanging point on a needle thread pulling-up spring and the needle thread take-up completes drawing-up of the needle threads after needle thread loops of the respective needles are seized by the looper. The sewing material is then fed one feed pitch as the needles are moved down and the needle thread take-up draws out the needle threads, while the needle threads are pulled up at the thread hanging point by the elasticity of the needle thread pulling-up spring, thus preventing slack in the needle threads below the needle thread eyes. The threads which are connected with the needle thread loops, are drawn up by the thread hanging point of the needle thread take-up against the resiliency of the needle thread pulling-up spring.

REFERENCES:
patent: 2937605 (1960-05-01), Walling et al.
patent: 3545392 (1970-12-01), Fresard
patent: 4325314 (1982-04-01), Niem
patent: 4736698 (1988-04-01), Inagaki
patent: 4791876 (1988-12-01), Sasaki et al.
patent: 4817545 (1989-04-01), Mikuni et al.
patent: 4934291 (1990-06-01), Yamamoto
patent: 5131338 (1992-07-01), Vogel et al.
patent: 2000-093671 (2000-04-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

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

Rate now

     

Profile ID: LFUS-PAI-O-3568484

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.