Needle threading device used in sewing machine

Details Needle threading device used in sewing machine Needle threading device used in sewing machine

1999-05-24

2000-05-30

Izaguirre, Ismael

Sewing

Elements

Needles

D05B 8702

Patent

active

060679190

ABSTRACT:
The hook mechanism 30 and the first thread guide member 24 are attached to the lower end of the needle threading shaft 21 so as to be integrally with each other. The second thread guide member 26 is rotatably supported by the needle threading shaft 21. When the needle threading shaft 21 rotates in the clockwise direction C, the second thread guide member 26 is pivoted by the link mechanism 50 in the direction toward the hook mechanism 30 and away from the first thread guide member 24. As a result, the needle threading hook 32 reaches the sewing needle 11 and penetrates through the sewing needle eye 11a of the sewing needle 11. Also, an amount of the upper thread 23 required for threading the sewing needle 11 is automatically fed from the free end portion 23a of the upper thread 23 in a simple manner.

REFERENCES:
patent: 4649843 (1987-03-01), Muroi et al.
patent: 5003900 (1991-04-01), Ogawa
patent: 5195452 (1993-03-01), Kamiya

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