Mining or in situ disintegration of hard material – Hard material disintegrating machines – Sidewall-working
Patent
1979-05-14
1981-02-03
Purser, Ernest R.
Mining or in situ disintegration of hard material
Hard material disintegrating machines
Sidewall-working
E21C 2724
Patent
active
042484839
ABSTRACT:
An end cutting unit for a mining machine comprises a cutting unit body, a ranging arm carrying a drivable cutting device, said ranging arm being carried by the cutting unit body at a location towards a first end thereof, and a transmission for transmitting drive to the cutting device. In order that the end cutting unit may be adaptable to advance and retreat mining uses as required, transmission is provided with two drive couplings respectively at said first end and at the opposite second end of the cutting unit body to enable rotary drive to be transmitted to the cutting device from a selected one of said drive couplings, and the ranging arm is capable of being set in a position, about which the arm can be ranged, in which the arm extends generally away from the end of the cutting unit body at which is located whichever drive coupling has been selected to impart rotary drive to the cutting device.
REFERENCES:
patent: 156339 (1874-10-01), Fletcher
patent: 4155598 (1979-05-01), Parrott et al.
Dresser Europe SA
Purser Ernest R.
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