Automatic bobbin and bobbin carrier changing apparatus for sewin

Details Automatic bobbin and bobbin carrier changing apparatus for sewin Automatic bobbin and bobbin carrier changing apparatus for sewin

1985-07-08

1987-03-10

Reynolds, Wm. Carter

Sewing

Stitch forming

Bobbin ejector

11212111, D05B 5726, D05B 1900

Patent

active

046483381

ABSTRACT:
An apparatus for changing bobbins and bobbin carriers in a sewing machine utilizes a magazine having an opening, containing a bobbin carrier, aligned between the bobbin housing and an electromagnet which pushes the bobbin carrier through the opening into the bobbin housing and then withdraws. The magazine withdraws; the electromagnet moves adjacent the bobbin housing, and in withdrawing pulls a spent bobbin carrier therefrom and drops it. The magazine moves into alignment again between the bobbin housing and the electromagnet, and the cycle repeats. A computer, responsive to apparatus positions, regulates pneumatic valves and an electrical source to automatically effect operations.

REFERENCES:
patent: 3376838 (1968-04-01), Schiffmacher et al.
patent: 3747547 (1973-07-01), Mayer et al.
patent: 3981256 (1976-09-01), Sexton
patent: 4223618 (1980-09-01), Cislak

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