Needle positioning device for sewing machines

Details Needle positioning device for sewing machines Needle positioning device for sewing machines

1981-01-09

1983-04-26

Schroeder, Werner H.

Sewing

Elements

Starting or stopping

D05B 6922

Patent

active

043809626

ABSTRACT:
A device for locating the needle of a sewing machine in a preselected position upon completion of a sewing operation. The device includes a control shaft operatively connected to the needle and by driving elements, to a clutch brake type operating motor. A cylindrical member having a reference pin extending radially from its periphery is fixed on the control shaft and is operatively connected to an auxiliary actuator which when the machine is stopped is caused by a control apparatus to rotate the cylindrical member and its reference pin. The control apparatus is also effective in moving a stud into the pathway of the reference pin and when the two engage one another, the cylindrical member and control shaft are stopped which positions the needle in a preselected position.

REFERENCES:
patent: 3592153 (1971-07-01), Mangeneson
patent: 3763803 (1973-10-01), Matsuda
patent: 3977339 (1976-08-01), Tice
patent: 4073250 (1978-02-01), Kasuga
patent: 4079686 (1978-03-01), Kasuga
patent: 4083316 (1978-04-01), Kasuga
patent: 4270474 (1981-06-01), Tice
patent: 4271775 (1981-06-01), Tice

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