Magnetic revolving shuttle for double-stitch sewing machines

Details Magnetic revolving shuttle for double-stitch sewing machines Magnetic revolving shuttle for double-stitch sewing machines

1999-09-03

2000-09-05

Izaguirre, Ismael

Sewing

Stitch forming

Shuttle type

112188, 112231, D05B 5720

Patent

active

061126845

ABSTRACT:
A revolving shuttle for double-stitch sewing machines having an improved thread-holding capacity without a substantial increase in the volume of the bobbin case, and allowing an easy removal of the bobbin case. The novel shuttle comprises a bobbin case which can be removed from the shuttle by a magnet. The fact that the bobbin consists in part of a ferromagnetic material guarantees safe removal of the bobbin case and the bobbin. This allows the conventional mechanical removal mechanism arranged on the end face of the bobbin case to be omitted, and provides the possibility either to use a larger bobbin with unchanged volume of the bobbin case, or to reduce the volume of the bobbin case for a normal bobbin.

REFERENCES:
patent: 2394369 (1946-02-01), Colegrove
patent: 2690726 (1954-10-01), Wener
patent: 2763227 (1956-09-01), Howard
patent: 2784690 (1957-03-01), Brandt
patent: 4284017 (1981-08-01), Starr
patent: 5152236 (1992-10-01), Hirose

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