Thread separating finger

Details Thread separating finger Thread separating finger

1978-10-30

1979-08-28

Hunter, H. Hampton

Sewing

Elements

Thread cutting, severing or breaking

112297, D05B 6502

Patent

active

041657004

ABSTRACT:
A thread separating finger used in combination with a knife assembly adapted for cutting thread utilized in a sewing machine with said assembly having first and second levers, each lever having first and second end portions and a medial portion therebetween, said first end portion of said second lever defining a first cutting blade portion, first means at said second end portion of said second lever for mounting said second lever for pivotal movement, a link having first and second end portions and a medial portion therebetween, said first end portion of said link defining a second cutting blade portion cooperative with said first cutting blade portion for cutting a thread therebetween upon relative pivoting motion between said link and said second lever, second means pivotally connecting together said medial portions of said link and second lever, and third means pivotally connecting together the first end portion of said first lever and the second end portion of said link whereby motion imparted to the second end portion of said first lever creates said relative pivoting motion between said link and said second lever to cut a thread adapted to be disposed between said first and second cutting blade portions. The thread separating finger moves into the loop of thread ahead of the cutting blades and separates the legs of the loop to insure that only one of the legs will be cut.

REFERENCES:
patent: 1050998 (1913-02-01), Horton
patent: 1395274 (1921-11-01), Hagelstein
patent: 2858786 (1958-11-01), Benink et al.
patent: 3386402 (1968-06-01), Ross
patent: 3463105 (1969-08-01), Aoyama
patent: 3783813 (1974-01-01), Kroll
patent: 3935827 (1976-02-01), Winter
patent: 3994249 (1976-11-01), Hsiao

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