Underground mining machine with longwall guidance system

Details Underground mining machine with longwall guidance system Underground mining machine with longwall guidance system

1977-10-05

1978-09-05

Purser, Ernest R.

Mining or in situ disintegration of hard material

Automatic control; signaling or indicating

Of hard material disintegrating machine

E21C 3512

Patent

active

041114876

ABSTRACT:
A signal derived from means, e.g. a gyroscope, mounted on the machine is used to guide a shearer drum along a straight path, the shearer being mounted on an underframe including two pivotally connected parts.

REFERENCES:
patent: 3362750 (1968-01-01), Carnegie
patent: 3531159 (1970-09-01), Schmidt
patent: 3578807 (1971-05-01), Barrett
patent: 3727332 (1971-11-01), Zimmer
patent: 3854775 (1974-12-01), Anderson

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