Bobbin thread cutting device of a sewing machine

Details Bobbin thread cutting device of a sewing machine Bobbin thread cutting device of a sewing machine

1997-08-12

1999-03-16

Neas, Michael A.

Sewing

Elements

Thread cutting, severing or breaking

D05B 6500

Patent

active

058816593

ABSTRACT:
A bobbin thread cutting device of a sewing machine for cutting a bobbin thread and for temporarily anchoring an end of the cut thread. The bobbin thread cutting device has a cover openably attached to a bed. The cover is formed with a guide groove in which a cutting blade is positioned. A blade edge of the cutting blade and a side edge of the guide groove define an acute-angled portion. A direction in which the bobbin thread is pulled out of the bed through the guide groove intersects a direction in which the bobbin thread extends from a tension generating portion of the bobbin case when the bobbin thread is about to be cut. A leading end of a cut bobbin thread is temporarily anchored at the acute-angled portion.

REFERENCES:
patent: 3191560 (1965-06-01), Marforio
patent: 3461826 (1969-08-01), Scholl et al.
patent: 4421043 (1983-12-01), Kornatowski et al.
patent: 4702185 (1987-10-01), Hanyu et al.
patent: 5025737 (1991-06-01), Kamiya
patent: 5131340 (1992-07-01), Tajima et al.

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