Mining or in situ disintegration of hard material – Hard material disintegrating machines – Rotary cutter head with advance direction coincident or...
Patent
1995-11-08
1997-09-02
Bagnell, David J.
Mining or in situ disintegration of hard material
Hard material disintegrating machines
Rotary cutter head with advance direction coincident or...
299 78, 299 791, E21C 2510, E21C 2712
Patent
active
056623879
ABSTRACT:
A cutter head for use in the removal of hard rock. The cutter head combines a standard cutting member, such as button bits or wedge-lock cutters, with cutting blades having a diamond cutting surface. The cutting blades cutting surface is positioned above the standard cutting members so that in operation, the cutting blades form grooves in the rock face and the standard cutting members fracture the rock adjacent the grooves through tensile forces.
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Robbins Company Brochure (3 pages) (undated).
Joy Manufacturing Company Annual Report (undated).
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