Mining machines with extensible probe arm

Details Mining machines with extensible probe arm Mining machines with extensible probe arm

1975-05-20

1976-10-05

Purser, Ernest R.

Mining or in situ disintegration of hard material

Automatic control; signaling or indicating

Of hard material disintegrating machine

250268, 324 10, E21C 2724

Patent

active

039841472

ABSTRACT:
A cutting horizon sensing probe of a ranging drum shearer mining machine is mounted on a telescopic arm pivotally supported on the body of the machine such that when it is desired to move the probe into its operational position the arm is first extended from its non-operational position to an intermediate position and is then pivoted towards its operational position.

REFERENCES:
patent: 2326827 (1943-08-01), Bynum
patent: 3719394 (1973-03-01), Hartley
patent: 3817578 (1974-06-01), Wilson

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