Web process control apparatus

Details Web process control apparatus Web process control apparatus

1976-07-19

1977-06-28

Swisher, S. Clement

Measuring and testing

Sheet, woven fabric or fiber

250359, 356199, G01N 3334

Patent

active

040317528

ABSTRACT:
This disclosure pertains to a web process control apparatus utilizing a pair of arms disposed parallel to one another and pivoted at a location outward from and adjacent to a marginal edge of a travelling flat web. Process control sensors detect various characteristics of the web and are located at each extreme free end of the arms. The web passes between opposed faces of the arms. The arms are pivoted in substantially ninety degree arcs along the surface of the web as the web moves in a direction parallel to the marginal edges thereof. The characteristics of the web to be measured is continuously scanned as the arms move in a prescribed controlled fashion, yielding in one direction, if so desired, a linear measurement transverse to the direction of web travel.

REFERENCES:
patent: 3190261 (1965-06-01), Ziffer
patent: 3480786 (1969-11-01), Kottman

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