Method of sewing a button on a thread stem and semi-automatic ma

Details Method of sewing a button on a thread stem and semi-automatic ma Method of sewing a button on a thread stem and semi-automatic ma

1978-01-12

1979-07-17

Hunter, H. Hampton

Sewing

Special machines

Article attaching

D05B 314

Patent

active

041611489

ABSTRACT:
In the method of the present invention of sewing a button, simultaneously with guiding the needle thread through the holes of the button and through the cloth and forming from this thread a foot between the button and the cloth, a stem is also formed by wrapping the thread about the foot being formed. To perform this wrapping around the foot being formed with the needle thread, a reserve length of this thread is provided after guiding it through one of the holes of the button and through the cloth, this reserve length being used to wrap around the foot being formed, simultaneously with the successive guiding of the thread through the holes of the button and the cloth. In the semi-automatic machine for performing this method there is incorporated a stem-forming device comprising a trough rotatable about the needle, having one end thereof underlying the button holder, and a means for engaging the thread and providing the reserve length thereof, mounted for passage through the trough to underlie the button holder and for clearing the trough upon the reserve length of the thread having been provided and the trough rotating. The invention significantly increases the productivity of labor, enhances the fastening of a button and increases the latter's wearability.

REFERENCES:
patent: 1336346 (1920-04-01), Darley
patent: 2391378 (1945-12-01), Avis
patent: 3182618 (1965-05-01), Pedersen
patent: 3329111 (1967-07-01), Pedersen et al.
patent: 3650229 (1972-03-01), Rovin

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