Sewing machine with trimmer drive mechanism

Details Sewing machine with trimmer drive mechanism Sewing machine with trimmer drive mechanism

1979-06-06

1981-05-05

Hunter, H. Hampton

Sewing

Elements

Thread cutting, severing or breaking

D05B 6502

Patent

active

042651913

ABSTRACT:
A sewing machine has a movable feed member for feeding articles to a stitch-applying station, and a trimmer for cutting chains of stitches which dangle from articles on the outfeed side of the stitch-applying station. The feed member and trimmer are driven from the same drive shaft. The trimmer drive includes a swinging crank which is connected to a rotary cam by a one-way clutch, one-way clutches which support the rotary cam and permit it to rotate only in the direction it is driven by the crank, and a rocker arm which has one end driven by the cam and another end drivingly connected to the trimmer.

REFERENCES:
patent: 2827869 (1958-03-01), Nering
patent: 3557730 (1971-01-01), Armstead
patent: 3981257 (1976-09-01), Kelly
patent: 4138957 (1979-02-01), Blessing et al.

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