Adjustment mechanism for sewing machine

Details Adjustment mechanism for sewing machine Adjustment mechanism for sewing machine

1991-06-03

1992-12-01

Schroeder, Werner H.

Sewing

Elements

Frames

33568, 403 4, 403388, 4034081, D05B 7500, B23Q 1600

Patent

active

051671964

ABSTRACT:
An adjustment mechanism for a button stitching machine includes a shaft rotatably mounted in a support block and having a threaded, forwardly extending portion and a rearwardly extending portion. The threaded forwardly extending portion threadedly engages a bore provided in a rear end of a rear tongue of the button stitching machine. Rotation of the shaft causes the rear tongue to advance and retreat accordingly. A potentiometer-type dial provides an inner scale graduated for indicating fractions of a turn and an outer scale which counts the number of turns.

REFERENCES:
patent: 2555243 (1951-05-01), Parker
patent: 3125046 (1964-03-01), Pedersen
patent: 3229373 (1966-01-01), Benton et al.
patent: 3991478 (1976-11-01), Stone
patent: 4303362 (1981-12-01), Lockhart
patent: 4532711 (1985-08-01), Shirai
patent: 4565094 (1986-01-01), Sedgewick
patent: 5058515 (1991-10-01), Chapman et al.

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