Sewing – Stitch forming – Revolving-hook type
Patent
1981-08-12
1987-12-22
Reynolds, W. C.
Sewing
Stitch forming
Revolving-hook type
112221, D05B 5708
Patent
active
047140372
ABSTRACT:
A needle looper assembly for a lockstitch sewing machine wherein the upper thread is retrieved by a sewing needle extending through a work material, which sewing needle has an extensible hook portion for catching an upper thread and drawing the same down through the work material to a looptaker in the bed of the sewing machine. The needle looper assembly is supported on the end of a lever pivotally carried in the sewing machine bed to extend transversely thereof. The lever has the needle looper assembly attached to one end thereof, and may be actuated by a cam so as to drive the needle looper assembly to an elevated thread catching position or to a retracted thread releasing position. Retaining means are provided associated with the needle looper to permit an upper thread to be caught and held during passage through a work material and to be released when in a retracted position adjacent the looptaker.
REFERENCES:
patent: 968066 (1910-08-01), Moore
patent: 1152482 (1915-09-01), Brown
patent: 1284646 (1918-11-01), Gammeter
patent: 2003461 (1935-06-01), Pearson
patent: 2426636 (1947-09-01), Monroe
patent: 3777682 (1973-12-01), Tooming et al.
patent: 4245577 (1981-01-01), Zocher
Johnson Ralph E.
Rodda Donald
Reynolds W. C.
Smith Robert E.
The Singer Company
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