Beam-deflection compensating structure for headboxes

Details Beam-deflection compensating structure for headboxes Beam-deflection compensating structure for headboxes

1975-07-03

1977-02-15

Lindsay, Jr., Robert L.

Paper making and fiber liberation

Apparatus

Running or indefinite length product forming and/or treating...

52 1, 52291, 162347, D21F 102

Patent

active

040081230

ABSTRACT:
An apparatus, such as the headbox of a paper machine, having the capability of compensating for the tendency of a beam to become deflected due to loads, temperature-differential phenomena and the like. A beam is supported at a pair of locations situated inwardly of the ends of the beam but spaced from the center thereof in such a way that due to loads, temperature-differentials, and the like the beam has a tendency to become deflected from a straight condition to a curved condition extending along a curve which passes through the above locations to the ends of the beam. A force structure cooperates with the beam at the region of the ends thereof for opposing the tendency of the beam to assume the above deflected condition so that through this force structure it becomes possible to prevent undesirable beam deflection.

REFERENCES:
patent: 3014527 (1961-12-01), Beachler
patent: 3273492 (1966-09-01), Justus
patent: 3749054 (1973-07-01), Brezinski
patent: 3769154 (1973-10-01), Wolf

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