Cloth cutting device in button-hole sewing machine

Details Cloth cutting device in button-hole sewing machine Cloth cutting device in button-hole sewing machine

1983-05-02

1985-11-12

Hunter, H. Hampton

Sewing

Special machines

Buttonhole

112130, 112301, D05B 306

Patent

active

045520801

ABSTRACT:
In a button-hole sewing machine where a piece of cloth is cut from a button hole before or after the sewing operation, a moveable knife cooperating with a stationary knife is driven through a mechanical linkage by an air drive unit and the operating pressure and speed of the moveable knife are changed by adjusting the device associated with the air drive unit.

REFERENCES:
patent: 1846426 (1932-02-01), Kiewicz
patent: 2555095 (1951-05-01), Reece
patent: 3578770 (1971-05-01), Van Hazendonk
patent: 3667410 (1972-06-01), Bianchi

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