Extensible telescopic coal bunker for subsurface mining
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United States of America Patent
Stats
-
Dec 2, 1980
Issued Date -
N/A
app pub date -
Sep 20, 1978
filing date -
Jun 12, 1976
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A subsurface coal bunker operating to receive and discharge coal is structured with an assemblage of nested telescopic container members including one stationary member and a plurality of movable members, with the container members being formed in size in a graduated series with each container member being sized to fit into a next larger container member adjacent thereto. The movable members are telescopically extensible and contractible in order to vary the volume of the assemblage and the bunker assembly is provided with a first belt conveyor for feeding material into the assemblage and a second belt conveyor for transporting material therefrom. A reversible drive mechanism, consisting of hydraulic cylinder devices actuating a system of drive chains and pulleys, is mounted on a support frame of the bunker and operates to drive the movable members between the extended and contracted positions.
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