Thread-cutter device for double lock stitch sewing machine

Details Thread-cutter device for double lock stitch sewing machine Thread-cutter device for double lock stitch sewing machine

1977-05-06

1978-11-07

Hunter, H. Hampton

Sewing

Elements

Thread cutting, severing or breaking

112292, D05B 6502

Patent

active

041239865

ABSTRACT:
A thread-cutting device for a cyclically operated double lock stitch sewing machine forming part of an automatic sewing system serves to cut the needle and bobbin or looper threads, respectively, at the underside of the throat or stitch plate of the sewing machine in close proximity to the needle hole in the throat or stitch plate. For cutting of the threads, a cutting edge is moved with respect to a stationary cutting blade into a cutting position for simultaneously cutting of the two threads. The carrier for the movable cutting tool moves the stationary cutting blade into its effective cutting position and further carries thread control fingers which assist in preparing the threads for the cutting operation. The cutting mechanism is actuated by the control means for the cyclically operated double lock stitch sewing machine.

REFERENCES:
patent: 2902960 (1959-09-01), Ketterer
patent: 3783813 (1974-01-01), Kroll
patent: 3895591 (1975-07-01), Killinger

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