Gear rack for longwall mining machine
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United States of America Patent
Stats
-
Dec 29, 1981
Grant Date -
N/A
app pub date -
Apr 14, 1980
filing date -
Apr 12, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A gear rack for a longwall mining machine characterized in having a width permitting the arms which carry the cutter drums of the mining machine to move to lower positions relative to a face conveyor such that low seams of coal may be mined. The rack comprises a plate extending along the face conveyor and has driving pin extensions which extend from one face of the plate to engage a driving gear or gears on the mining machine.
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