Mining or in situ disintegration of hard material – Hard material disintegrating machines – Stepper-type advance-causing means
Patent
1978-07-24
1980-01-29
Purser, Ernest R.
Mining or in situ disintegration of hard material
Hard material disintegrating machines
Stepper-type advance-causing means
299 43, 299 34, E21C 2736
Patent
active
041858743
ABSTRACT:
A mineral winning installation employs a longwall scraper chain conveyor at the mineral face with roof supports arranged at the goaf side of the conveyor. A winning machine, such as a shearer or plough, moves back and forth alongside the mineral face to skim or cut mineral. The machine carries its own drive means which is electrically powered and which drives a pinion, for example, meshing with a toothed rack. An independent constructional assembly arranged at the roof or floor has a multi-sectioned rail or plate carrying the toothed rack. In addition, the rail or plate supports a sealed guard housing containing an electric live track and a further sealed housing containing pressurized water. The machine has a pick-up arm which engages with a contact sliding along the electric track to supply electric power to the drive means and a conduit which has a water collector displaceable along the water housing to supply water to the machine for dust suppression.
REFERENCES:
patent: 4025118 (1977-05-01), Lanfermann et al.
patent: 4067257 (1978-01-01), Pentith
patent: 4072355 (1978-02-01), Pentith
Gewerkschaft Eisenhutte Westfalia
Purser Ernest R.
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