Underbed thread trimmer picking arm

Details Underbed thread trimmer picking arm Underbed thread trimmer picking arm

1979-07-19

1980-11-25

Schroeder, Werner H.

Sewing

Elements

Thread cutting, severing or breaking

112292, 112298, D05B 300, D05B 6502

Patent

active

042351790

ABSTRACT:
A picking arm for an underbed thread trimmer which engages the bobbin thread and one limb of the needle thread and holds them so that a thread catching arm may engage the bobbin and needle threads and draw them into severing relation with a cutting edge of a thread cutting blade. After the threads have been cut, the picking arm returns to a rest position with the end of the bobbin thread retained in a channel contained in its thread engaging extremity. The bobbin thread is held in a position where it will be available for concatenation with a needle thread for the production of lockstitches.

REFERENCES:
patent: 3211117 (1965-10-01), Speichermann et al.
patent: 3424117 (1969-01-01), Schopf
patent: 3424117 (1969-01-01), Schopf
patent: 3624735 (1971-11-01), Hedegaard
patent: 3658021 (1972-04-01), Hedegaard et al.
patent: 3776161 (1973-12-01), Papajewski et al.
patent: 3867892 (1975-02-01), Ciecion et al.
patent: 3894502 (1975-07-01), Hager et al.

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