Bobbin case holder with adjustable thread tensioning device
Bobbin case of rotary shuttle device for sewing machine
Bobbin case position plate adjustment mechanism
Bobbin case restraining means for a sewing machine
Bobbin case with thread guide for cyclic sewing machine
Bobbin for sewing machine
Bobbin holder for a sewing machine
Bobbin holding structure
Bobbin housing assembly in a sewing machine having at least one
Bobbin in run-out detector, and a bobbin changing mechanism inco
Bobbin low detector
Bobbin thread cutting device of a sewing machine
Bobbin thread holding device for lock stitch sewing machine cutt
Bobbin thread level detection and display arrangement for a sewi
Bobbin thread run-out detectors
Bobbin thread tension device
Bobbin thread tensioning device for a sewing machine
Bobbin thread winder and sewing machine equipped therewith
Bobbin winding actuation by buttonhole selection
Bobbin winding actuation by presser foot up switch