Advancing material of indeterminate length – With material-responsive control means – To position material laterally
Patent
1981-03-05
1982-08-03
Gilreath, Stanley N.
Advancing material of indeterminate length
With material-responsive control means
To position material laterally
B65H 2526
Patent
active
043424120
ABSTRACT:
A guide apparatus for a continuously moving web has an upstream fixed roller and a downstream fixed roller substantially parallel to each other and defining a plane. A fixed and substantially closed box carries these rollers and a frame which is offset from the plane and pivotal on the box about a frame axis substantially perpendicular to the plane. A pair of adjustment rollers are rotatable on the frame about parallel adjustment-roller axes fixed relative to each other and to the frame. Thus a continuously moving web can pass along the path over the upstream roller, then over one after the other of the adjustment rollers, and finally over the downstream roller. A sensor is mounted on the box adjacent the downstream roller and is connected via a control means to a motor inside the box that automatically pivots the frame whenever the web position detected by the sensor deviates from a predetermined desired position. Thus all of the critical circuitry and moving parts of the apparatus are safely within the closed box.
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Keller Merten
Lorenz Otto
Gilreath Stanley N.
Ross Karl F.
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