CUTTER FOR MINING MACHINES Russian patent published in 2012 - IPC E21C35/183 

FIELD: mining.

SUBSTANCE: cutter for mining machines includes holder with axial channel in which a set of wear-resistant elements in the form of external and internal cores is fixed; working heads of the above cores face one and the same side. Shank of each external core is provided with mating conical groove relative to working head of internal core. Rear part of shank of external core can be made from less wear-resistant material in comparison to head part.

EFFECT: reducing hard alloy consumption and improving cutter operating efficiency.

2 cl, 1 dwg