Advancing material of indeterminate length – With material-responsive control means – To position material laterally
Patent
1985-12-12
1988-02-23
Levy, Stuart S.
Advancing material of indeterminate length
With material-responsive control means
To position material laterally
26 77, 198394, 226 20, 226 21, 226170, 271227, 271251, B65G 4724, B65H 702, B65H 918, D06C 306
Patent
active
047265019
ABSTRACT:
An edge steerage apparatus for steering an edge of a moving web to correct for misalignment of the edge in the direction of travel. The apparatus includes one or more edge steerage units, each unit having a pair of pivotally supported, spaced-apart wheels adjacent to the edge of the web for contacting the moving web. For each of the wheels of the steerage unit, a spherical ball is provided which rotates freely omni-directionally so that the web is engaged between the wheels and the spherical ball. The two wheels of a steerage unit have a slight toe-out so that the web between the wheels is maintained in a taut condition. The position of the edge is monitored in relation to a fixed position and a steerage drive orients the wheels to introduce lateral movement in the cloth between the wheels and at the edge to steer the edge toward the fixed position.
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Levy Stuart S.
Sohacki Lynn M.
Tex-nology Systems, Inc.
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