Paper making and fiber liberation – Apparatus – Automatic control
Patent
1980-02-14
1981-07-28
Bashore, S. Leon
Paper making and fiber liberation
Apparatus
Automatic control
15306A, 34160, 162352, 162366, 162374, D21C 148, D21C 152
Patent
active
042808693
ABSTRACT:
A suction dewatering system including a suction device adapted to be connected to a suction source and having a longitudinal opening therein through which suction is applied. A cover is provided for the device including at least two spaced lands to be mounted to the device with the space therebetween forming a slot in alignment with the longitudinal opening in the suction device. A wear strip is removably mounted on each land and has a wear surface thereon for a medium to be passed thereover for dewatering. At least one of the wear strips is adjustable so that the shifting of each adjustable strip in the longitudinal direction causes the strip to shift laterally and vary the slot width in the direction of travel of the medium across the wear surface and varying the dwell time of the medium over the slot to which suction is being applied. A cam arm longitudinally extends in a longitudinal track in the cover. One of the cam arm and the adjustable wear strip has at least one recess with a pair of opposing walls at an oblique angle with respect to the longitudinal slot. The other of the cam arm and adjustable wear strip has a cam extending therefrom into the recess with a pair of sides conforming to the oblique walls of the recess. Controls are provided to reciprocate the cam arm in response to change in permeability of the medium over the suction device during use causing the adjustable wear strip to shift laterally and vary the slot width to change the dwell time of the medium over the slot.
REFERENCES:
patent: 2142711 (1939-01-01), Birch
patent: 3520775 (1970-07-01), Truxa
patent: 3836428 (1974-09-01), McConaughy
patent: 3928125 (1975-12-01), Poeshl
patent: 4225991 (1980-10-01), Bolton et al.
Albany International Corp.
Alvo Steve
Bashore S. Leon
LandOfFree
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