Automatic buttonholing sizing device

Details Automatic buttonholing sizing device Automatic buttonholing sizing device

1976-10-18

1977-04-26

Hunter, H. Hampton

Sewing

Work manipulating

Guides

112 77, D05B 302

Patent

active

040194493

ABSTRACT:
An automatic buttonhole sizing device for sewing machines which includes a sensing wheel which by resting on the material being sewn, turns as the material is fed and has a rotatable setting ring which programs the size of the buttonhole. Incorporated in the sensing wheel are one fixed and one movable tab for holding any one of many buttons of various sizes therebetween, wherein the size of the button determines the position of the movable tab. The movable tab is so associated with the setting ring of the sensing wheel that when the two tabs are positioned touching opposite sides of a button by rotating the setting ring, the size of the buttonhole is automatically determined from the final positioning of the setting ring.

REFERENCES:
patent: 3421463 (1969-01-01), Happe et al.
patent: 3596618 (1971-08-01), Goldbach et al.
patent: 3656443 (1972-04-01), Ross

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