Thread abnormality detection utilizing integrator and comparator

Details Thread abnormality detection utilizing integrator and comparator Thread abnormality detection utilizing integrator and comparator

1978-07-13

1980-04-08

Nerbun, Peter P.

Sewing

Elements

Starting or stopping

112278, D05B 6936

Patent

active

041966856

ABSTRACT:
A drive control system for stopping a sewing machine when a thread of the sewing machine is broken or tangled. The system comprises rotational speed meter circuits, each one of which is coupled with respective thread tension disk means which rotate in synchronism due to movement of threads on them. A deceleration of the rotation of one of the thread tension disk means is detected by a rotational speed meter circuit coupled with it. An electric logic circuit in the system, which is energized to drive the sewing machine in response to a closure of a start switch and deenergized to stop the sewing machine in response to a closure of a stop switch, is deenergized to stop the sewing machine in response to the detection of the deceleration of the rotation of one of the rotary disks.

REFERENCES:
patent: 3352267 (1967-11-01), Brandriff et al.
patent: 3843883 (1974-10-01), De Vita et al.
patent: 3881435 (1975-05-01), Makabe
patent: 4052946 (1977-10-01), Rydz et al.

Affiliated with

Also associated with

Rating

Thread abnormality detection utilizing integrator and comparator 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 abnormality detection utilizing integrator and comparator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thread abnormality detection utilizing integrator and comparator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-968346