Looper thread holding apparatus for a sewing machine and method

Details Looper thread holding apparatus for a sewing machine and method Looper thread holding apparatus for a sewing machine and method

1993-06-15

1994-08-16

Crowder, Clifford D.

Sewing

Elements

Thread cutting, severing or breaking

112253, 1122621, D05B 6500

Patent

active

053376889

ABSTRACT:
The apparatus provides: thread hooking means having a thread hooking member for hooking a thread having a predetermined tension, the thread hooking member being disposed in proximity of a moving path of a needle, and for retracting the thread hooking member to a predetermined first refuge position to draw the thread toward the first refuge position; cutting and holding means for cutting the thread drawn toward the first refuge position by the thread hooking means, by the cooperation of one surface of the thread hooking member and a cutting edge which is disposed in proximity of the one surface, and for holding the vicinity of the cut portion of the thread by the cooperation the other surface of the thread hooking member and a holding member which is resiliently pressed against the other surface; and means for, immediately after a sewing operation is started, retracting to a second refuge position separated from the first refuge position, to cancel the held state of the thread hold by the cutting and holding means. Thereby, the end of a looper thread extending from the starting portion of a seam is made as short as possible so that the thread end removal operation after the sewing operation is not required to conduct.

REFERENCES:
patent: 3599588 (1971-08-01), Angele
patent: 4879960 (1989-11-01), Prais

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