Variable pull off for bobbin thread

Details Variable pull off for bobbin thread Variable pull off for bobbin thread

1982-09-03

1984-03-20

Reynolds, Wm. Carter

Sewing

Work manipulating

Guides

112184, 112242, D05B 302, D05B 2722, D05B

Patent

active

044374216

ABSTRACT:
A variable under thread pull off device in a sewing machine for providing the proper amount of slack in the bobbin thread to effect uniform stitch formation. The device will pull off a varying amount of bobbin thread to correspond to that which is required for each particular bight position of the stitch being set.

REFERENCES:
patent: 1105968 (1914-08-01), Diehl et al.
patent: 3164113 (1965-01-01), Ketterer
patent: 3467039 (1969-09-01), Greenwood, Jr. et al.
patent: 3693565 (1972-09-01), Ketterer
patent: 4091753 (1978-05-01), Johnson et al.

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