Sewing machine and a needle threading device thereof

Details Sewing machine and a needle threading device thereof Sewing machine and a needle threading device thereof

2005-12-13

2005-12-13

Izaguirre, Ismael (Department: 3765)

Sewing

Elements

Needles

Reexamination Certificate

active

06973888

ABSTRACT:
A needle threading device of a sewing machine, wherein an operating lever is manually operated to move down against spring action until a threading hook secured to the lower end of a threading bar comes to a position where there is an eye of machine needle. The threading bar is then axially rotated. With the axial rotation of the threading bar, the threading hook is rotated to pass through the needle eye. With release of the operating lever from the manual operation, the threading bar is moved up by spring action while the threading hook catches an upper thread of the sewing machine and is pulled out of the needle eye.

REFERENCES:
patent: 5143005 (1992-09-01), Jimenez et al.
patent: 5615629 (1997-04-01), Yamada et al.
patent: 6564731 (2003-05-01), Sano et al.
patent: 6655306 (2003-12-01), Kotaki
patent: 6814016 (2004-11-01), Hori

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