Advancing material of indeterminate length – With material-responsive control means – To position material laterally
Patent
1978-10-23
1981-01-06
Gilreath, Stanley N.
Advancing material of indeterminate length
With material-responsive control means
To position material laterally
B65H 2526
Patent
active
042431670
ABSTRACT:
A web guide system to accurately control the lateral alignment of a continuous moving web of material is provided which is efficient and easy to manufacture. A guide roll over which a moving web of material passes in a 90.degree. wrap extends between two pivot arms. The first arm extends downward from a drive motor and is adapted to pivot in a vertical plane about a pivot point on the drive motor. The second arm is adapted to pivot in a vertical plane about a second pivot point offset 90.degree. from the first pivot point in a counterclockwise direction along a quarter circle arc. Movement of the first pivot by the drive motor will cause the guide roll to pivot at an angle from its normal position and shift the lateral position of the moving web of material passing over it. A scanner assembly extends between the pivot arms in close proximity to the guide roll to detect lateral misalignment of the moving web of material.
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