Rotary cutting head for mining machines with means for inducing

Details Rotary cutting head for mining machines with means for inducing Rotary cutting head for mining machines with means for inducing

1982-09-15

1984-08-14

Purser, Ernest R.

Mining or in situ disintegration of hard material

Automatic control; signaling or indicating

Of hard material disintegrating machine

299 12, 299 81, 175 48, E21C 3522, E21C 3504

Patent

active

044653182

ABSTRACT:
A rotary cutter head for a coal mining machine comprises sensor means for sensing a preselected state, as for example, the methane concentration in the vicinity of the cutter head and for deriving a signal indicative of the sensed preselected state.

REFERENCES:
patent: 3591235 (1971-07-01), Addison
patent: 4154482 (1979-05-01), Farman

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