Coal plough having separately adjustable cutters and flexible fl

Details Coal plough having separately adjustable cutters and flexible fl Coal plough having separately adjustable cutters and flexible fl

1977-02-22

1978-10-10

Purser, Ernest R.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

Cutter attached to endless chain or cable

299 80, 299 81, E21C 2732

Patent

active

041193474

ABSTRACT:
A coal plough has a main body guided for movement back and forth along a longwall coal face. The body supports various cutting tool carriers which are adjustable with the aid of hydraulic piston and cylinder units. Fluid is supplied to these units by means of a flexible composite line which also conveys control signals remotely initiated for selecting the units to be charged with fluid to effect the adjustment desired.

REFERENCES:
patent: 1503870 (1924-08-01), Ball et al.
patent: 3361479 (1968-01-01), Lobbe
patent: 3866670 (1975-02-01), Cramer et al.

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