Sewing – Stitch forming – Revolving-hook type
Patent
1977-12-22
1979-03-06
Reynolds, Wm. Carter
Sewing
Stitch forming
Revolving-hook type
112231, D05B 5722
Patent
active
041424751
ABSTRACT:
A lock stitch sewing machine having a rotary loop taker adapted to carry a loop of thread about a stationary bobbin thread case. The bobbin thread case is restrained from rotation by a finger which is disposed between abutments in the bobbin thread case for opening a passage to allow the needle thread loop past the bobbin thread case rotation restraining means, the rotation restraining finger is vibrated at a frequency greater than four cycles per rotation of the loop taker.
REFERENCES:
patent: 2138939 (1938-12-01), Pudelko
patent: 2990794 (1961-07-01), Ketterer
Bell Edward L.
Ebs William V.
Reynolds Wm. Carter
Smith Robert E.
The Singer Company
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