Conveyors: power-driven – Conveyor system for arranging or rearranging stream of items – By laterally or vertically moving successive items in...
Patent
1975-08-14
1977-04-05
Blix, Trygve M.
Conveyors: power-driven
Conveyor system for arranging or rearranging stream of items
By laterally or vertically moving successive items in...
198661, B65G 6546
Patent
active
040157342
ABSTRACT:
A bottom silo unloader is disclosed in which a tapered sweep auger has its inner end of largest diameter supported for rotation about a transverse vertical axis at the center of a silo so that it sweeps over the silo floor as it is also rotated on its longitudinal axis to feed material to a center-located hopper therebelow with which a discharge auger communicates. The outer smaller end of the sweep auger is spaced off the silo floor and unsupported other than through the driven inner end. In its specifically disclosed form the tapered shaft of the sweeper auger is composed of three equal length sections of constant diameter, the diameters of which are progressively increased from shaft section to shaft section in the direction of the supported inner end of the sweep auger. The helical flight about the shaft sections have a constant radial depth and related pitch so that the loading capacity of the sweep auger increases from a minimum on its unsupported outer shaft section to a maximum on its shaft section closest to the center of the silo.
REFERENCES:
patent: 2970827 (1961-02-01), Dodson
patent: 3403795 (1968-10-01), Schaefer
patent: 3451567 (1969-06-01), Laidig
patent: 3851774 (1974-12-01), Laidig et al.
Blix Trygve M.
Frankfort Charles E.
Laidig Silo Unloaders, Inc.
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