Head box guide block having bores and tubular inserts

Details Head box guide block having bores and tubular inserts Head box guide block having bores and tubular inserts

1977-02-18

1979-03-27

Fisher, Richard V.

Paper making and fiber liberation

Apparatus

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

138 39, D21F 102

Patent

active

041464273

ABSTRACT:
The head box guide is formed of a metal block with cylindrical bores into which a pair of telescoping plastic inserts are fitted. Each pair of inserts are formed so as to define a stepped widening within the block. In addition, the inserts have terminal parts which are disposed outside of the bores and which are locked together in contiguous fashion so as to avoid any gaps. Also, a honeycomb connecting member rests on the downstream terminal parts of the inserts to form continuations of the flow passages.

REFERENCES:
patent: 2672159 (1954-03-01), Walton
patent: 3098787 (1963-07-01), Sieber
patent: 3309264 (1967-03-01), Parker et al.
patent: 3373080 (1968-03-01), Appel et al.
patent: 3725197 (1973-04-01), Dahl et al.
patent: 3769155 (1973-10-01), Schiel
patent: 3921672 (1975-11-01), Arnold

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