Paper making and fiber liberation – Processes and products – With measuring – inspecting and/or testing
Patent
1975-02-24
1976-11-30
Bashore, S. Leon
Paper making and fiber liberation
Processes and products
With measuring, inspecting and/or testing
162259, 162263, 162347, D21F 106, D21F 706
Patent
active
039947734
ABSTRACT:
A headbox for a papermaking machine or the like in which material, such as supension, flows from the headbox between upper and lower lips and through a discharge slot defined by the lips to a wire or a like receiver. The upper lip is reinforced by a beam extending along the upper lip on top of the lip while a detector is provided for detecting deflection of the upper lip due to the forces exerted thereon by material flowing between the lips. The detector is arranged to emit signals in conformity with deflection of the upper lip and correcting influences can be initiated in conformity with the emitted signals to compensate for the aforementioned deflection. In particular, the detector includes an element stationary with the upper lip in about the center of the lateral length of the lip and another element which is stationarily mounted and which elements cooperate upon relative vertical movement therebetween to bring about the emitting of signals which represent a measure of the amount of deflection of the upper lip.
REFERENCES:
patent: 3463701 (1969-08-01), Curtis
patent: 3645843 (1972-02-01), Schmaeng
patent: 3738910 (1973-06-01), De Noyer
Egelhof Dieter
Wolf Karl
Bashore S. Leon
Crosby Melvin A.
Fischer Richard V.
J. M. Voith GmbH
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