Automatic dual bobbin mechanism

Automatic, in situ bobbin spool loading

Bobbin and plunger assembly

Bobbin for sewing machine

Bobbin thread winder and sewing machine equipped therewith

Clutch for sewing machine thread winding mechanism

Clutching arrangement for a sewing machine bobbin

Electric sewing machine with computerized control

Lower thread winding device

Sewing machine bobbin for a vertical axis hook

Sewing machine with a spooling mechanism

Sewing machine with retractable handwheel

Sewing thread spool having thread locking and cutting functions

Spool winder for sewing machines

Thread severing arrangement for thread winding bobbin

Thread winder and sewing machine provided therewith

Thread winding mechanism for a sewing machine

Thread winding mechanism for sewing machine

Under thread supply apparatus

Winding device for a sewing machine