Drying and gas or vapor contact with solids – Apparatus – Rotary drums or receptacles
Patent
1996-10-21
2000-11-07
Tudor, Harold J.
Drying and gas or vapor contact with solids
Apparatus
Rotary drums or receptacles
D21F 500, F26B 1106
Patent
active
H00019062
ABSTRACT:
The top and bottom felts at the web transfer between two dryer sections in a single tier papermaking dryer are spaced by pivoting the vacuum roll over which the felt and web move. The vacuum roll is mounted to two pivot arms which are driven by inflatable air rides to alternately incline the roll toward the downstream felt, forming a sandwich of the two felts and the web, and to a spaced position. The short motion of the vacuum roll allows standard felt stretchers to be used, and permits rapid adjustment of the felt spacing.
REFERENCES:
patent: 4666073 (1987-05-01), DuFour
patent: 5065529 (1991-11-01), Skaugen et al.
patent: 5248390 (1993-09-01), Fissman et al.
patent: 5544422 (1996-08-01), Leitenberger
Archer David J.
Beloit Technologies Inc.
Campbell Raymond W.
Tudor Harold J.
Veneman Dirk J.
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