Threading device of sewing machine

Details Threading device of sewing machine Threading device of sewing machine

2008-05-15

2009-08-04

Izaguirre, Ismael (Department: 3765)

Sewing

Elements

Needles

Reexamination Certificate

active

07568440

ABSTRACT:
A threading device includes a threading shaft holding a threading hook, a threading operation inputting mechanism from which a back-and-forth movement is given to the threading hook, a first supporting mechanism movably supporting the threading shaft in an X-axis direction, a second supporting mechanism movably supporting the threading shaft in a Y-axis direction, and a positioning mechanism which, when a movement operating portion is operated, moves the threading shaft along a path corresponding to an arrangement of each of the needles. The positioning mechanism includes a first cam mechanism which moves the threading shaft in the X-axis direction, and a second cam mechanism which moves the threading shaft in the second direction. The threading shaft is sequentially moved to positions corresponding to the arrangement of each of the needles in the horizontal directions in accordance with the operation of the movement operating portion.

REFERENCES:
patent: 4876973 (1989-10-01), Marrache et al.
patent: 5072678 (1991-12-01), Satoma
patent: 5195452 (1993-03-01), Kamiya
patent: 6067920 (2000-05-01), Uemoto
patent: 6907834 (2005-06-01), Noguchi et al.
patent: 10-137481 (1998-05-01), None

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