Position sensing device for sewing instrumentality actuator

Details Position sensing device for sewing instrumentality actuator Position sensing device for sewing instrumentality actuator

1974-10-30

1976-08-24

Schroeder, Werner H.

Sewing

Work manipulating

Guides

336 30, 336135, 11212111, D05B 302, D05B 1900

Patent

active

039760197

ABSTRACT:
A sewing machine is disclosed having electromechanical actuators for controlling the stitch forming instrumentalities in the formation of stitch patterns with a non-contact position sensing device associated with each electromechanical actuator comprising spaced coils and a metallic shunt plate arranged adjacent and shiftable relatively to the coils in response to movement of the actuator to produce a measureable variation in the inductance of the coils which bears an advantageous linear relationship to the electromechanical actuator position.

REFERENCES:
patent: 2935875 (1960-05-01), Eggers et al.
patent: 3158826 (1964-11-01), Beck
patent: 3757232 (1973-09-01), Matsuda

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