Displacement sensing and guide apparatus

Details Displacement sensing and guide apparatus Displacement sensing and guide apparatus

1976-05-04

1977-10-18

McCarthy, Edward J.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

226 15, B65H 2526

Patent

active

040542513

ABSTRACT:
A displacement sensing and guide apparatus for continuous sheet material wherein the edges of a moving sheet of material are sensed by electromechanical or other variable voltage or variable impedance sensing and feedback means and communicate electrically with an electrical switching system, either directly or through a balanced bridge circuit, to operate the switching system and to indicate and to correct a displacement of the sheet material from a predetermined position.

REFERENCES:
patent: 2726858 (1955-12-01), Cherigie
patent: 2860840 (1958-11-01), Jacobsen
patent: 2871013 (1959-01-01), Markey
patent: 3232547 (1966-02-01), Thiede
patent: 3323699 (1967-06-01), Bricker

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