Embroidery stitch formation device for sewing machine

Details Embroidery stitch formation device for sewing machine Embroidery stitch formation device for sewing machine

1983-05-13

1984-03-27

Hunter, H. Hampton

Sewing

Special machines

Embroidering

D05C 302, D05C 708

Patent

active

044387130

ABSTRACT:
An embroidery stitch formation device for sewing machine comprising an outer cylinder which is mounted around a needle bar movable up and down in unison with the motion thereof, a nipple fitted to the lower end of the outer cylinder, passages for needle thread and cord provided slantwise through a frame and the outer cylinder, a rotary ring rotatably arranged on the outer cylinder having a driver gear on the upper portion thereof, a support arm provided with a tilted shaft on which is mounted a bobbin for bobbin thread, the support arm being positioned fixedly on the outer periphery of the rotary ring and a guide bar having guide holes for bobbin thread being mounted on the rotary ring, and while a lockstitch seam is being formed by a piece of needle thread and a piece of lockstitch thread, a piece of cord supplied through a passageway down to the needle in parallel therewith is wound with turns of bobbin thread supplied from the bobbin rotating around the outer cylinder by means of a rotating rotary ring, the cord also being locked by the piece of needle thread during the process of lockstitch formation.

REFERENCES:
patent: 1041584 (1912-10-01), Borton
patent: 1066490 (1913-07-01), Groebli
patent: 1327646 (1920-01-01), Weis
patent: 1707068 (1929-03-01), Rubel
patent: 1762479 (1930-06-01), Maier
patent: 2067340 (1937-01-01), Prazak
patent: 2699742 (1955-01-01), Smith

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