Pneumatically driven thread cutter

Details Pneumatically driven thread cutter Pneumatically driven thread cutter

1977-02-24

1978-05-30

Hunter, H. Hampton

Sewing

Elements

Thread cutting, severing or breaking

112288, 112301, 112DIG1, D05B 6506

Patent

active

040917568

ABSTRACT:
A thread chain cutting mechanism for a sewing machine which includes a swingable blade which is actuated by means independent from the mechanical workings of the machine. The actuating mechanism includes a cantilevered resiliently urged member which carries at its free end the swingable cutter blade. A pneumatically operated plunger oscillates said resilient member and thus the blade carried thereby between a cutting position and a non-cutting position at a frequency which is adjustable. Means for providing a section in the cutting area so as to draw the thread chain into the path of the blades.

REFERENCES:
patent: 3143987 (1964-08-01), Daniel et al.
patent: 3403648 (1968-10-01), Jarrett
patent: 3489115 (1970-01-01), Marforio
patent: 3541984 (1970-11-01), Daniel
patent: 3749040 (1973-07-01), Jurgens
patent: 3815533 (1974-06-01), Brady
patent: 3934526 (1976-01-01), Damast et al.

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