Sheet handling apparatus

Details Sheet handling apparatus Sheet handling apparatus

1988-03-14

1989-02-28

Skaggs, H. Grant

Sheet feeding or delivering

Feeding

By means to convey sheet

271 82, B65H 512

Patent

active

048078670

ABSTRACT:
Apparatus for rotating a flexible sheet of material includes a rotatable axle and a generally cylindrical drum mounted on the axle for rotation therewith. A generally cylindrical cam is secured to an end surface of the drum for rotation therewith, the cam defining at least one indentation extending towards the axle. A cam follower is provided positioned to generally follow the cam. A clamp normally biased against the surface of the drum for securing a first edge of the sheet material to the drum is provided. A biasing cam is journaled to the end surface of the drum in the cam indentation, the biasing cam responsive to pressure from the cam follower for biasing the clamp away from the drum surface so as to enable the positioning of an edge of the flexible sheet of material between the clamp and the surface of the drum. Holding structure is provided for selectively holding the cam follower stationary relative to the cam, such that the cam follower can be selectively engaged with the biasing to control the position of the clamp cam.

REFERENCES:
patent: 1869403 (1932-08-01), Bellucke
patent: 3637202 (1972-01-01), Mowry et al.
patent: 3827803 (1974-08-01), Shelffo et al.
patent: 4033575 (1977-07-01), Fujimoto
patent: 4111123 (1978-09-01), Willeitner
patent: 4132403 (1979-01-01), Weisbach et al.
patent: 4357870 (1982-11-01), Rudolph et al.
patent: 4501415 (1985-02-01), Loebach

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