Systems to drill minerals etc...

Details Systems to drill minerals etc... Systems to drill minerals etc...

E - Fixed Constructions

21

C

255/12, 262/77

E21C 27/10 (2006.01) E21C 25/16 (2006.01) E21C 27/38 (2006.01) E21C 27/40 (2006.01)

Patent

CA 1334842

System for drilling minerals, rocks and others of that kind with the use of rotating disk- or slab- tools, therewith characterized , that the material to be drilled will be axcavated - as the case may be pre-cut / reliefed - chiefly in a frontal advance direction, but also radially from the inside to the outside - layerwise undercut and always breaking into the free space. In combination hereto a process- patent is demanded for a propulsive aggregate being autonomic by supporting itself on the pre-worked / pre-cut excavating front - or rather being lead on it or through it and keeping this way a constant undercutting depth.

561041

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