Silo unloader lowering control

Details Silo unloader lowering control Silo unloader lowering control

1979-01-12

1981-09-15

Blix, Trygve M.

Material or article handling

Static receptacle and means for charging or discharging, or...

Nongravity discharging means

406114, B65G 6538

Patent

active

042894379

ABSTRACT:
A top unloading silo unloader pendently supported from a tripod with a cable connected to a motor operated winch. An automatic silo unloader let-down control system is operably connected to the winch motor to energize the motor once during each revolution of the unloader to lower the unloader in the silo. The let-down control system has a control switch mounted on the unloader which is actuated by the rotating part of the unloader once during each revolution of the part. An automatic time delay unit is adjustable to control the duration of operation of the winch motor thereby controlling the amount of let-down of the silo unloader.

REFERENCES:
patent: 2430203 (1947-11-01), Bailey
patent: 2511246 (1950-06-01), Chamberlin
patent: 2518601 (1950-08-01), Cordis
patent: 2580306 (1951-12-01), Leach et al.
patent: 2663594 (1953-12-01), Dennick
patent: 2719058 (1955-09-01), Van Dusen
patent: 3204786 (1965-09-01), Kucera
patent: 3217907 (1965-11-01), Buschbom
patent: 3235229 (1966-02-01), Buschbom
patent: 4094252 (1978-06-01), Pater et al.
Butler Manufacturing Company Brochure, "Automatic Lowering Control for V-II Silage Distributor-Unloader", 3-1974.

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