Method for preventing coal spills

Details Method for preventing coal spills Method for preventing coal spills

1977-11-29

1978-10-10

Sheridan, Robert G.

214 41R, B65G 6706

Patent

active

041192265

ABSTRACT:
Slidable gates controlling the flow of coal from a coal bunker into hoppers on a larry car are opened, and simultaneously electric power to the travel circuit of the larry car is interrupted through control circuitry. Also, simultaneously a signal from a transmitter is received by a receiver and an interlock system is activated that prevents power from being restored to the travel circuit larry car until the gates are closed. When the gates are closed, the signal does not reach the receiver and all circuits return to normal and electric power to the travel circuit of the larry car is restored.

REFERENCES:
patent: 1734686 (1929-11-01), McCollum et al.
patent: 2317175 (1943-04-01), Burdick
patent: 3066809 (1962-12-01), Burridge et al.

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