Universal ripper miner

Details Universal ripper miner Universal ripper miner

1989-05-04

1991-05-07

Britts, Ramon S.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

With material-handling means

299 85, 299 88, 299 91, E21C 2930

Patent

active

050130935

ABSTRACT:
A universal ripper miner used to cut, collect and transfer material from an underground mine working face includes a cutter head that is vertically movable in an arcuate cutting cycle by means of drive members, such as hydraulically actuated pistons. The cutter head may support a circular cutter bit having a circular cutting edge that may be indexed to incrementally expose a fresh cutting edge. An automatic indexing system is disclosed wherein indexing occurs by means of a worm gear and indexing lever mechanism. The invention also contemplates a bi-directional bit holder enabling cutting to occur in both the upstroke and the downstroke cutting cycle. Another feature of the invention discloses multiple bits arranged in an in-line, radially staggered pattern, or a side-by-side pattern to increase the mining capacity in each cutting cycle. An on-board resharpening system is also disclosed for resharpening the cutting edge at the end of cutting stroke position. The aforementioned improvement features may be used either singly, or in any proposed combination with each other.

REFERENCES:
patent: 2745655 (1956-05-01), Vojtush
patent: 3088720 (1963-05-01), Hlinsky
patent: 4342486 (1982-08-01), O'Neill
patent: 4501448 (1985-02-01), Morrell et al.

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