Mining or in situ disintegration of hard material – Hard material disintegrating machines – With mine roof-supporting means
Patent
1985-07-12
1987-12-08
Novosad, Stephen J.
Mining or in situ disintegration of hard material
Hard material disintegrating machines
With mine roof-supporting means
299 12, 299 75, E21C 2718, E21P 2303
Patent
active
047115025
ABSTRACT:
An apparatus for cutting excavations having a substantially planar face comprises a cutting tool which is rotatably mounted on a jib. The jib is mounted on a mobile machine for a pivotal movement in a plane which is transverse to the heading direction and is divided into two jib sections which are pivotally movable relative to each other about an axis which is substantially parallel to the pivotal axis of the jib. The cutting tool is rotatably mounted close to or at the free end of that jib section which is most remote from the pivotal axis of the jib.
REFERENCES:
patent: 2619339 (1952-11-01), Cartlidge
patent: 3640580 (1972-02-01), White
patent: 3954299 (1976-05-01), Hartley
patent: 4160619 (1979-07-01), Nelson
patent: 4199193 (1980-04-01), Damron et al.
patent: 4589701 (1986-05-01), Beckmann et al.
Barnthaler Franz
Bedenk Ferdinand
Schetina Otto
Zitz Alfred
Bagnell David J.
Novosad Stephen J.
Voest-Alpine Aktiengesellschaft
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