Mining or in situ disintegration of hard material – Hard material disintegrating machines – Sidewall-working
Patent
1978-06-23
1979-07-31
Purser, Ernest R.
Mining or in situ disintegration of hard material
Hard material disintegrating machines
Sidewall-working
E21C 2902
Patent
active
041628101
ABSTRACT:
A drive gear of a drum-cutter mining machine engages a rack device extending along the working side of a face conveyor to propel the mining machine along a mine face. Spanning each joint between conveyor tray sections is a bridging rack segment with leg extensions interlocked with recesses formed in extended end members of non-bridging rack segments each of which extends along a single conveyor tray section and is secured thereto by bolts. Rack teeth are formed by spaced-apart pin members carried by lugs outwardly of the face conveyor. The ends of the pin members at the face conveyor for the bridging rack segments are carried by U-shaped plates with a tongue plate engaged behind the extended end members of the non-bridging rack segments. The ends of the pin members at the face conveyor for the non-bridging rack segments are carried by flanges having lower, outwardly-bent sections extending toward the mine floor to form a ramp at the working face side of the face conveyor.
REFERENCES:
patent: 4082361 (1978-04-01), Lanfermann
Gebr. Eickhoff Maschinenfabrik und Eisengiesserei m.b.H.
Murray Thomas H.
Poff Clifford A.
Purser Ernest R.
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