APPARATUS FOR AUTOMATICALLY ADJUSTING THE SEWING PITCH IN A SEWING MACHINE.

摘要

THE APPARATUS FOR ADJUSTING SEWING PITCHES ACCORDING TO THE PRESENT INVENTION ALLOWS TO POSITION THE LAST SEWING STITCH AT A PREDETERMINED PLACE. DURING THE SEWING OPERATION, A DEVICE DETECTS THE END OF THE SEWING PIECE AND THE APPARATUS ADJUSTS THE SEWING PIT BY DETECTING THE GAP BETWEEN THE NEEDLE HOLE AND THE STITCH STITCH.