Mining machines

Details Mining machines Mining machines

1975-05-19

1977-02-08

Purser, Ernest R.

Mining or in situ disintegration of hard material

Automatic control; signaling or indicating

Of hard material disintegrating machine

299 43, E21C 2510

Patent

active

040069354

ABSTRACT:
A ranging arm shearer mining machine has sensing means for sensing the position of the rotational axis of a cutter drum mounted on the ranging arm relative to the pivotal axis of the arm.

REFERENCES:
patent: 2761666 (1956-09-01), Heimaster et al.
patent: 2886299 (1959-05-01), Heimaster et al.
patent: 3108789 (1963-10-01), Heimaster et al.
patent: 3371964 (1968-03-01), Weber
patent: 3832781 (1974-09-01), Flagge

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