Resilient bobbin thread pull-off member for lockstitch sewing ma

Details Resilient bobbin thread pull-off member for lockstitch sewing ma Resilient bobbin thread pull-off member for lockstitch sewing ma

1981-07-13

1983-08-23

Reynolds, Wm. Carter

Sewing

Elements

Take-ups

112323, D05B 4900, D05B 2702

Patent

active

043997619

ABSTRACT:
A lockstitch sewing machine is provided with an elongate resilient member which is affixed at one end in the machine and extends under the feed dog of the machine for engagement thereby. The resilient member is flexed by the feed dog during downward movement thereof and then acts against bobbin thread pulling it from the bobbin spool. The elongate member relaxes and separates from the bobbin thread during upward movement of the feed dog.

REFERENCES:
patent: 715911 (1902-12-01), Warren
patent: 1105968 (1914-08-01), Diehl et al.
patent: 1792237 (1931-02-01), Parkes
patent: 2884882 (1959-05-01), Donaldson, Jr.
patent: 3164113 (1965-01-01), Ketterer
patent: 4091753 (1978-01-01), Johnson et al.
patent: 4182250 (1980-01-01), Johnson
patent: 4215639 (1980-08-01), Johnson
patent: 4326474 (1982-04-01), Zylbert
U.S. Patent Application Serial No. 06/204,426 to Johnson.

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