JPS61126987U - - Google Patents

Description

[Brief explanation of the drawing]

Figure 1 is a perspective view showing only the essential parts of the lower part of the sewing machine, Figures 2 and 3 are explanatory diagrams during thread cutting operation, and Figure 4
The figure is a side view, and FIG. 5 is an explanatory diagram of levers with different hook shapes. 1...Block, 2...Outer pot, 3...Inner pot, 4
...Lower thread feeding device, 5...Needle thread hooking device, 6,1
2...Sliding rod, 7a, 7b...Solenoid, 8...
...Guide plate, 11...Cutter, B...Bracket.

Claims (1)

[Scope of utility model registration request] A needle thread hooking device for hooking and feeding out the upper thread is provided opposite the front surface of the outer hook, and a fork-like hook portion is provided protruding from a lever of the needle thread hooking device that moves forward toward the front surface of the outer hook. When the hooking device moves forward, the two tips of the fork-like hook portions are brought into contact with the upper front notch of the bobbin case inserted into the inner pot, and the upper thread is pulled into a triangular shape connecting the three points between these two hook portions and the fabric. A device that hooks the upper thread from the outer hook of a sewing machine and lets it out in a loop.