Residual bobbin thread amount detecting apparatus for a sewing m

Details Residual bobbin thread amount detecting apparatus for a sewing m Residual bobbin thread amount detecting apparatus for a sewing m

1991-05-22

1992-11-10

Nerbun, Peter

Sewing

Elements

Thread sensing

D05B 4500

Patent

active

051614758

ABSTRACT:
A residual bobbin thread amount detection apparatus for a sewing machine which includes a hook rotating in association with a main shaft of the sewing machine and a bobbin rotatably mounted on the hook. A first detector detects the rotation speed of the main shaft and a second detector detects the rotation speed of the bobbin. A comparator responsive to the second detector generates a signal when the rotation speed of the bobbin exceeds a predetermined value, whereby a controller operates an alarm.

REFERENCES:
patent: 4192243 (1980-03-01), Blessing et al.
patent: 4934292 (1990-06-01), Mardix et al.
patent: 4938159 (1990-07-01), Shibata
patent: 5018465 (1991-05-01), Hager et al.

Affiliated with

Also associated with

Rating

Residual bobbin thread amount detecting apparatus for a sewing m does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Residual bobbin thread amount detecting apparatus for a sewing m, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Residual bobbin thread amount detecting apparatus for a sewing m will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2287174