Bobbin winding actuation by buttonhole selection

Details Bobbin winding actuation by buttonhole selection Bobbin winding actuation by buttonhole selection

1983-08-24

1985-03-12

Reynolds, Wm. Carter

Sewing

Elements

Frames

112221, 1122641, 112279, D05B 5900, D05B 306, D05B 6902

Patent

active

045037930

ABSTRACT:
A method for implementing winding of a lower thread bobbin in place in a looptaker of a sewing machine from an upper thread supply. A buttonhole pattern in which at least one initial stitch is effected at one end of the buttonhole prior to holding needle bar reciprocation in abeyance while feeding the work material to the other end of the buttonhole, is selected but is utilized without a traveling buttonhole foot which would reinitiate stitching and feeding of the work material. Instead, any other presser foot, or no presser foot, is used so that bobbin winding may proceed after upper thread is initially brought to the lower bobbin, without having thread flow interferred with by needle bar reciprocation.

REFERENCES:
patent: 3143093 (1964-08-01), Parry
patent: 3693566 (1972-09-01), Ketterer
patent: 4138955 (1979-02-01), Garron
patent: 4159688 (1979-07-01), Garron et al.
patent: 4188900 (1980-02-01), Garron et al.
patent: 4216733 (1980-08-01), Kornatowski
patent: 4327654 (1982-05-01), Odermann et al.
patent: 4359954 (1982-11-01), Dreier

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