Looper thread take-up apparatus

Details Looper thread take-up apparatus Looper thread take-up apparatus

1997-08-12

1998-03-31

Izaguirre, Ismael

Sewing

Elements

Take-ups

D05B 4904

Patent

active

057326401

ABSTRACT:
A looper thread take-up apparatus which is mounted on a position away from a sewing machine bed, on the side facing a needle drop point of a leg portion for supporting the base end of a sewing machine arm on the machine bed with a thread take-up cam fixed on a rotating shaft which is projected from the side face of the leg portion and is interlocked with a sewing machine main shaft within the machine bed or with the upper shaft within the machine arm, where the looper thread take-up cam is rotated synchronously with the vertical motion of the needle at the nose of the machine arm, and with the advancing and retreating operations of a looper within the machine bed, thereby to make supplementary operations easier such as setting of the looper thread, adjusting of the loosening extent or the like without interference with the sewing operation.

REFERENCES:
patent: 1277250 (1918-08-01), Onderdonk
patent: 1508703 (1924-09-01), Leathem
patent: 1559568 (1925-11-01), Gatchell
patent: 1723195 (1929-08-01), Moffatt
patent: 1864407 (1932-06-01), Christensen et al.
patent: 2350725 (1944-06-01), Clayton
patent: 2350726 (1944-06-01), Clayton
patent: 2866427 (1958-12-01), Irmscher
patent: 5487347 (1996-01-01), Kogawara

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