Apparatus for coal mining in-cutting and out-cutting

Details Apparatus for coal mining in-cutting and out-cutting Apparatus for coal mining in-cutting and out-cutting

1977-01-18

1978-04-04

Purser, Ernest R.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

Rotary cutter head with advance direction coincident or...

175 91, 299 18, 299 67, 299 80, E21C 2722

Patent

active

040823628

ABSTRACT:
Apparatus for forming bores and coal seams and the like and enlarging preexisting bores. A mining machine includes a nonrotatable body member, a conveyor in line with the body member, a pilot head, and a pair of wing cutters mounted to the body member for pivotal movement with respect to the body member. Structure is provided for moving coal or the like cut by the wing cutters during out-cutting toward the sides of the bore, the structure including a pair of shields, one associated with each wing cutter and disposed between the wing cutter and the body member and pilot head, and a generally conical member coaxial with the shaft for rotation of the pilot head. Stabilization of the body member, etc., within the bore is provided by a pair of wheel sets spaced along the length of the conveyor, and a pair of right angle guide members vertically displaced from the wheel structure of one the wheel sets. The back set of wheels may include a pair of vertically spaced wheels on each side of the conveyor, one wheel of each set engaging the roof of the bore while the other wheel engages the floor, and the roof engaging wheel and floor engaging wheel may both be vertically adjustable. A roof cutter may also be provided including a cutting drum rotatable about a horizontal axis and a pair of chain cutters rotating the cutting drum and connected to a horizontal shaft that is stationary with respect to the body member.

REFERENCES:
patent: 3280416 (1966-10-01), Forsyth
patent: 3333898 (1967-08-01), Russell
patent: 3642325 (1972-02-01), Mulvaney
patent: 4003602 (1977-01-01), Justice et al.

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