Apparatus for determining the sag of a running web of material t

Details Apparatus for determining the sag of a running web of material t Apparatus for determining the sag of a running web of material t

1991-10-10

1994-06-07

Yasich, Daniel M.

Measuring and testing

Sheet, woven fabric or fiber

73826, G01N 0308, G01L 0504

Patent

active

053179137

ABSTRACT:
This invention refers to an apparatus for determining the sag of a running web of material transversely to its longitudinal direction. For this purpose according to the invention a carrier of a web sensing roller is guided in a housing to be movable against spring force transversely to its rotational axis and apparatus is provided for measuring the displacement distance of the roller. The roller is replicated in triplicate across the width of the web. In other embodiments web sag is measured by roller rotation and by web force respectively on the three rollers.

REFERENCES:
patent: 2674127 (1954-04-01), Garrett et al.
patent: 2923150 (1960-02-01), Imboden et al.
patent: 3385106 (1968-05-01), Fargo et al.
patent: 4970895 (1990-11-01), Haughton et al.
patent: 5123284 (1992-06-01), Edinburg et al.

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