Paper making and fiber liberation – Apparatus – Automatic control
Patent
1994-09-26
1995-06-06
Hastings, Karen M.
Paper making and fiber liberation
Apparatus
Automatic control
162351, 162352, 162354, D21F 154
Patent
active
054219612
ABSTRACT:
The instant device is a forming board position control system. A forming board fitted with the instant invention is positioned at various distances from and with virtually perfect constant parallelarity to the lie of the frontal plane of a headbox in apposition to the forming board. A computer controlled motor causes a parallelwise positioned pair of worm gear jacks mounted to the board, to move the board longitudinally to and fro through a distance from the frontal plane of the headbox as is determined with reference to manually manipulated computerized settings until the system stops perforce of a signal to such effect received by a controller computer as the result of interaction as between a magnet affixed to the base of one of two mounting plates to which the board is also mounted and a transducer closely positioned thereto and connected directly to the computer.
REFERENCES:
patent: 3997390 (1976-12-01), Kankaanpaa
patent: 4416731 (1983-11-01), Pesonen et al.
patent: 4523978 (1985-06-01), Pullinen
patent: 4623429 (1986-11-01), Tissari
patent: 4684441 (1987-08-01), Ibrahim
patent: 5203967 (1993-04-01), Bando et al.
Hastings Karen M.
Welch, Jr. John J.
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