Threading device of sewing machine

Details Threading device of sewing machine Threading device of sewing machine

2009-03-23

2011-10-04

Worrell, Danny (Department: 3765)

Sewing

Elements

Needles

Reexamination Certificate

active

08028634

ABSTRACT:
A threading device of a sewing machine is provided. The threading device includes a threading hook which moves forward to penetrate through an eye of a needle to capture a thread and which moves backward to insert the thread into the eye, a threading shaft which holds the threading hook at a lower end thereof, a threading movement input mechanism from which an operation for causing the threading hook to carry out a threading movement is input, an up-and-down member which moves, in accordance with the operation to the threading movement input mechanism, in up and down directions to rotate the threading shaft, a thread holding mechanism which holds the thread to be inserted into the needle, and a thread releasing mechanism which releases the thread that is held by the thread holding mechanism. The thread releasing mechanism releases the thread when the threading hook is moving backward.

REFERENCES:
patent: 7568440 (2009-08-01), Miyoshi
patent: 7841283 (2010-11-01), Kawaguchi et al.
patent: 7905188 (2011-03-01), Miyoshi
patent: 7918171 (2011-04-01), Miyoshi
patent: 2003/0019410 (2003-01-01), Sano et al.
patent: 3663739 (2005-04-01), None

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