Paper machine wet line control

Details Paper machine wet line control Paper machine wet line control

1982-06-29

1985-02-19

Smith, Jerry

Boots, shoes, and leggings

364556, 358101, 358107, 162263, 162252, G06F 1546

Patent

active

045009686

ABSTRACT:
A paper machine wet line monitor is provided by photographing the surface of the wire of a paper machine in the area of the wet line (sometimes known as the dry line) with a video camera to generate video signals. The video signals are digitized and define a line corresponding to the wet line of the machine and this line is displayed preferably while also indicating the average location of the wet line across the machine. The processed digitized signal may be imposed on an automatic headbox control to influence this control and maintain the position of the wet line.

REFERENCES:
patent: 3620914 (1971-11-01), Rocheleau
patent: 3703436 (1972-11-01), Rice
patent: 3886036 (1975-05-01), Dahlin
patent: 3926719 (1975-12-01), Spitz
patent: 3958509 (1976-05-01), Murray et al.
patent: 4019819 (1977-04-01), Lodzinski
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patent: 4097847 (1978-06-01), Forsen et al.
patent: 4142105 (1979-02-01), Erdmann
patent: 4161205 (1979-07-01), Justus
patent: 4243925 (1981-01-01), Gnuechtel
patent: 4305096 (1981-12-01), Yokoshima et al.
patent: 4352125 (1982-09-01), Guth
patent: 4374703 (1983-02-01), Lebeau et al.

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