Conveyors: power-driven – With alarm or indicator – Means for measuring dimensions of load on a conveyor
Patent
1978-10-25
1981-03-24
Nase, Jeffrey V.
Conveyors: power-driven
With alarm or indicator
Means for measuring dimensions of load on a conveyor
198544, 198551, 198603, 222 55, B65G 3700, G01G 1110
Patent
active
042575184
ABSTRACT:
Feeder apparatus for feeding at a controlled variable rate particulate solid material, such as coal, from a supply conduit located above a gravimetric feeder to a discharge chute located below the feeder. The particulate material flows to the feeder from the supply conduit along a path having a generally vertical center line and the discharge chute provides a flow path having a generally vertical center line closely laterally spaced relative to the center line of flow to the feeder. The feeder apparatus has a horizontally extending housing with an upwardly facing inlet through which the material flows to the feeder and a downwardly facing outlet forming part of the discharge chute through which the material flows from the feeder. Within the housing is a main feeder conveyor including an endless belt with a generally horizontal span adapted to receive at one end the particulate material flowing to the feeder and to convey in a layer a measured quantity of material a horizontal distance across weighing means to an exit zone at the opposite end of the belt, the horizontal distance being substantially greater than the spacing between the center lines of flow to the feeder and through such discharge chute. Associated with the main feeder conveyor is a gravimetric control system for controlling the amount of material deposited on the belt. Particulate material that drops off the main conveyor belt at the exit zone is received on a return belt conveyor and carried in a reverse direction a sufficient distance to bring the material to the discharge chute. Cooperation between the main feeder conveyor and the return conveyor permits gravimetric feeding of particulate material to the discharge chute that is closely laterally spaced to the flow path of material to the main conveyor by a distance that is substantially less than the length of travel of the material on the main conveyor.
REFERENCES:
patent: 587509 (1897-08-01), Roberts
patent: 3161485 (1964-12-01), Buhrer
patent: 3187944 (1965-06-01), Stock
patent: 3568820 (1971-03-01), Patch
patent: 4011999 (1977-03-01), Glaeser
Christofer Donald E.
Stock Arthur J.
Nase Jeffrey V.
Stock Equipment Company
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