Automatic bobbin thread guiding apparatus

Details Automatic bobbin thread guiding apparatus Automatic bobbin thread guiding apparatus

1989-09-06

1991-06-25

Schroeder, Werner H.

Sewing

Elements

Thread cutting, severing or breaking

112184, 112298, D05B 6502, D05B 5714

Patent

active

050257374

ABSTRACT:
An automatic bobbin thread guiding apparatus in combination with a sewing machine has a work supporting bed, a throat plate, a shuttle race slide and a horizontally rotating shuttle. A bobbin thread holding assembly is provided between the shuttle race slide and the rotating shuttle, for clamping and carrying the bobbin thread end, and is operatively connected with the slide. A bobbin thread engagement guiding mechanism is provided for guiding the bobbin thread catching portion of the assembly so as to make the bobbin thread engage automatically with the bobbin thread tension adjusting mechanism in the rotating shuttle when the assembly is driven backward, and then to hold the catching portion at a given position for making the bobbin thread intersect with the needle thread loop when the assembly reached its rear end position.

REFERENCES:
patent: 1816308 (1931-07-01), Allen
patent: 3760749 (1973-09-01), Trageser
patent: 3894499 (1975-07-01), Hamlett

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