Method and apparatus for securing mining machines employed on in

Details Method and apparatus for securing mining machines employed on in Method and apparatus for securing mining machines employed on in

1977-05-23

1978-06-27

Purser, Ernest R.

Mining or in situ disintegration of hard material

Automatic control; signaling or indicating

Of hard material disintegrating machine

192 3R, 299 43, E21C 2922

Patent

active

040970914

ABSTRACT:
A method for securing mining machines, particularly longwall mining machines from sliding on inclined or steep seams in the event of a malfunction of a traction element or driving unit. The invention has particular application to longwall mining machines provided with at least two gearwheels which engage a rack extending along a working face whereby the mining machine may be advanced during a mining operation. The invention also relates to apparatus for automatically braking such a mining machine in the event of failure of a traction element.

REFERENCES:
patent: 3885487 (1975-05-01), Weston, Jr.
patent: 4045083 (1977-08-01), Monks

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