Adjustable bobbin thread run-out indicator
Apparatus and method for monitoring consumption of sewing thread
Apparatus and method for monitoring predetermined seam character
Apparatus for detecting amount of leftover lower thread in a sew
Apparatus for detecting skipped stitches
Bobbin in run-out detector, and a bobbin changing mechanism inco
Bobbin thread level detection and display arrangement for a sewi
Bobbin thread run-out detectors
Catch thread device for sewing machines
Device for detecting remainder of bobbin thread in sewing machin
Device for stopping the drive of a sewing machine in the case of
Device for use with a bobbin-less coil of thread
Electromagnetic bobbin thread supply alarm
Electronic control of needle thread in a sewing machine
Electronic sewing machine and sewing machine motor control...
Feeding control apparatus for a plurality of threads
Lint minimization in sewing machine bobbin alarm
Low bobbin thread detection system
Low bobbin thread detection system including photodetector holde
Low bobbin thread detector