Mining machines

Details Mining machines Mining machines

1976-03-04

1978-12-19

Purser, Ernest R.

Mining or in situ disintegration of hard material

Automatic control; signaling or indicating

Of hard material disintegrating machine

33141E, 33142, 33144, 104279, E21C 3508

Patent

active

041303199

ABSTRACT:
A longwall mining machine is provided with a roller resiliently urged into engagement with a track extending along the longwall face. Sensor means are provided to sense rotation of the roller and derive a signal indicative of the machine's position along the longwall face.

REFERENCES:
patent: 2025569 (1935-12-01), Carter
patent: 2853957 (1958-09-01), Dean et al.
patent: 3664117 (1971-09-01), Beckman
patent: 3688410 (1972-09-01), Zeidler
patent: 3700164 (1972-10-01), Slagle
patent: 3866539 (1975-02-01), Gasse
patent: 3980338 (1976-09-01), Weber

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