Web retention and advancement mechanism

Details Web retention and advancement mechanism Web retention and advancement mechanism

1988-10-06

1990-07-31

Stodola, Daniel P.

Advancing material of indeterminate length

By orbitally traveling material-engaging surface

On endless belt or chain

271277, 271272, B65H 2000, B65H 502

Patent

active

049444425

ABSTRACT:
A web retention and advancement mechanism for a rotating drum utilizes a pair of spaced belts operating in grooves formed in the drum peripheral surface to retain the web to the drum for an arcuate portion of its rotation. Pulleys spaced from the grooves guide the belts in a path that extends about a portion of the drum and about the pulleys. The pulleys are spaced axially a distance greater than the inner edges of the grooves to cause the belts to travel a convergent path toward the drum to grip edges of the web in the grooves and hold the web to the drum while the belts are disposed in the drum grooves. A divergent path from the drum permits the belts to release the web.

REFERENCES:
patent: 2410611 (1945-05-01), Pratt et al.
patent: 2697901 (1954-12-01), Hosack
patent: 4659073 (1987-04-01), Leonard
Article "From Resin to Sealed", Aug. 1962.

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