Dispensing – Automatic control – Constant weight – volume or pressure control by output
Patent
1986-12-10
1988-02-16
Rolla, Joseph J.
Dispensing
Automatic control
Constant weight, volume or pressure control by output
222 71, 177121, B67D 508
Patent
active
047249803
ABSTRACT:
Fibers or other bulk material to be conveyed into an air forming system are fed in a continuous stream at a uniform rate to the air forming system by conveying the material into an elongated weight pan, weighing the pan, dropping the material onto a conveyor, and adjusting the speed of the conveyor to compensate for variations in weight. After a target weight in the pan is achieved, material is no longer fed into the pan, but the pan is not dumped until the conveyor has moved at least a distance equal to the length of the pan. The conveyor is at least twice as long as the pan, so that two dumps of the pan can be accommodated on the belt at the same time, thereby permitting the speed of the belt to be adjusted to feed the material into the air forming system at a substantially constant rate.
REFERENCES:
patent: 2637434 (1953-05-01), Harper
patent: 3165195 (1965-01-01), Sass et al.
patent: 3407656 (1968-10-01), Chadenson et al.
patent: 3412699 (1968-11-01), Culp et al.
patent: 3957126 (1976-05-01), Hobart
Haigh-Chadwick Ltd. Product Information Leaflet, "MICROWEIGH".
Allied Corporation
Antonis W. N.
Decker Ken C.
Noland Kenneth
Rolla Joseph J.
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