Sewing machine having multiple needles

Details Sewing machine having multiple needles Sewing machine having multiple needles

1997-10-10

1999-09-07

Nerbun, Peter

Sewing

Special machines

Embroidering

112163, 112273, 112300, 11247004, 11247519, D05B 1912, D05B 6500, D05B 6936

Patent

active

059470437

ABSTRACT:
A sewing machine includes a plurality of needle bars for performing stitching with multiple needle threads. The needle threads have diameters, tenacity, and stretchability different from one another. Sewing parameters inherent to each of the needle threads are beforehand determined. The parameters are maximum sewing speed, thread breakage sensitivity, thread residual amount, needle-rotary hook meet angle, workpiece fabric feed timing, and feed pitch. A spindle motor, a thread cutting motor, a rotary hook drive motor, an X-axis motor, and a Y-axis motor are controlledly driven based on the selected parameters inherent to the just used needle thread.

REFERENCES:
patent: 3709176 (1973-01-01), Papajewski et al.
patent: 4077342 (1978-03-01), Steckenrider
patent: 4526114 (1985-07-01), Martell et al.
patent: 4555997 (1985-12-01), Tancs
patent: 4726307 (1988-02-01), Yamauchi
patent: 5144900 (1992-09-01), Takahashi

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