Buttonhole width adjusting mechanism

Details Buttonhole width adjusting mechanism Buttonhole width adjusting mechanism

1982-04-05

1983-11-15

Schroeder, Werner H.

Sewing

Work manipulating

Guides

D05B 302, D05B 306

Patent

active

044149077

ABSTRACT:
A mechanism to facilitate selection of a standard size or shirt type buttonhole by interposing a link between the needle bar gate and driving arm and substantially parallel to the driving arm, with the connection between the driving arm and the link being movable to the selected positions based from the pivot point for the needle bar gate in order to obtain transfer of a proportion of the motion of the driving arm to the needle bar gate.

REFERENCES:
patent: 225199 (1880-03-01), Smith
patent: 1083556 (1914-01-01), Ohlson
patent: 2378534 (1945-06-01), Beyer
patent: 2828705 (1958-04-01), Enos
patent: 2966869 (1961-01-01), Fischer
patent: 2983240 (1961-05-01), Engle
patent: 3476066 (1969-11-01), Szuba et al.
patent: 3522781 (1970-08-01), Baruffa
patent: 3985087 (1976-10-01), Herr et al.

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