D - Textiles – Paper – 21 – F
Patent
D - Textiles, Paper
21
F
92/17.6
D21F 1/02 (2006.01) B65H 7/16 (2006.01)
Patent
CA 1332525
A headbox apparatus is disclosed for ejecting stock in a forming section of a papermaking machine. The apparatus includes an enclosure for the stock, the enclosure having an inlet and an outlet such that the stock flows from the inlet to the outlet. The headbox also includes a device for selectively controlling the flow of stock ejected through the outlet. The device includes a profiling roof having an upstream and a downstream end. The upstream end of the profiling roof is pivotally secured to the enclosure and the downstream end defines a slice lip. A plurality of adjusters extend from the enclosure to adjacent to the downstream end of the profiling roof for selectively pivoting the profiling roof relative to the enclosure. The profiling roof has a first and a second face with the first face guiding the flow towards the outlet. The second face is towards the adjusters and defines a plurality of spaced slots with each slot extending parallel to the flow from the downstream end towards the upstream end of the profiling roof. The arrangement being such that in use of the apparatus, the adjusters selectively flex the profiling roof normal to the flow for controlling the profile of the ejected stock while maintaining the machine directional stiffness of the profiling roof.
615155
Beloit Corporation
Ridout & Maybee Llp
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