Head box for cylinder molds having a flexible lid element

Details Head box for cylinder molds having a flexible lid element Head box for cylinder molds having a flexible lid element

1976-01-29

1977-09-27

Bashore, S. Leon

Paper making and fiber liberation

Apparatus

Running or indefinite length product forming and/or treating...

162336, 162347, D21F 106

Patent

active

040504999

ABSTRACT:
A head box for use with a cylinder type papermaking machine which includes a dispersion chamber having a fiber stock discharge outlet disposed adjacent the surface of the cylinder mold. A lid element extends downstream from the stock outlet in spaced relation to the cylinder mold and has a trailing edge portion capable of flexing to maintain a desired pressure within a pressurized stock formation area established between the lid element and the mold surface notwithstanding pressure changes within the dispersion chamber. Means are provided to selectively vary the spatial relationship of the lid element relative to the surface of the cylinder mold.

REFERENCES:
patent: 1928107 (1933-09-01), Lang
patent: 2329799 (1943-09-01), Thorsen
patent: 2677991 (1954-05-01), Goumeniouk
patent: 3072180 (1963-01-01), Jodrey
patent: 3313681 (1967-04-01), Dennis et al.
patent: 3575799 (1971-04-01), Gedemer et al.
patent: 3661702 (1972-05-01), Means
patent: 3839149 (1974-10-01), Justus et al.
patent: 3853695 (1974-12-01), Back et al.

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