Adjustable anti-spill bobbin tension spring
Adjustable hook for a sewing machine
Adjustable needle guard
Anti-jam thrust washer for sewing machine looptaker
Arrangement in a sewing machine shuttle
Assembly for lower thread tension adjustment of sewing machine
Bobbin assembly incorporating a thread tensioning assembly and m
Bobbin assembly with structure for severing improperly routed th
Bobbin basket with thread grooving protection means
Bobbin case
Bobbin case
Bobbin case and bobbin of sewing machine
Bobbin case assembly with thread tensioning assembly
Bobbin case assembly with thread tensioning element and...
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 holding structure