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 chain stitch insert
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 retaining means
Bobbin case tool and method of use
Bobbin case with thread guide for cyclic sewing machine
Bobbin casing assembly and sewing machine having same
Bobbin changer apparatus for sewing machine
Bobbin exchange judging apparatus
Bobbin exchanger
Bobbin extractor
Bobbin for sewing machine