Web tensioning apparatus for a hostile fluid bath

Details Web tensioning apparatus for a hostile fluid bath Web tensioning apparatus for a hostile fluid bath

1978-12-22

1980-05-13

McCarthy, Edward J.

Advancing material of indeterminate length

Plural material-moving means

With intermittent material-mover

226189, 242 753, B65H 1742, B65H 1722, B65H 2316

Patent

active

042024765

ABSTRACT:
A web tensioning apparatus for a hostile fluid bath is disclosed. Web-driving rollers of the apparatus are fixed above the bath, and idler rollers are suspended from the web within the bath. A first drive sets the surface velocity of a first web-driving roller, and second drives set the surface velocities of the other web-driving rollers, in response to the positions of the idler rollers. Substantially uniform web tension is thereby maintained.

REFERENCES:
patent: 2781192 (1957-02-01), Gilfillan
patent: 2793033 (1957-05-01), Seelen
patent: 3643844 (1972-02-01), Hunter

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