Mining equipment

Details Mining equipment Mining equipment

1983-05-13

1985-07-30

Novosad, Stephen J.

Mining or in situ disintegration of hard material

Automatic control; signaling or indicating

Of hard material disintegrating machine

91189R, E21C 2720

Patent

active

045317828

ABSTRACT:
Mining equipment for steering the cutting horizon of a mining machine cutter which is mounted on a ranging arm and which in use makes repeated traverses along the working face, comprises a boom urged into contact with the mine roof formed on a previous traverse of the machine. The boom is urged towards the mine roof by a ram hydraulically connected to a piston and cylinder device such that movement of the piston of the device is in accordance with that of the ram. Movement of the piston rod activates a flow control valve controlling operation of a ram controlling ranging of the arm.

REFERENCES:
patent: 2965077 (1960-12-01), Van Den Bussche
patent: 3030930 (1962-04-01), Gratzmuller
patent: 3436922 (1969-04-01), Irresberger
patent: 4371209 (1983-02-01), Alford et al.

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