Drinker Biddle & Reath LLP
Threading device of sewing machine
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.
Juki Corporation
D
D05B
inventional
Takanao
Miyoshi