Cutter with cutter holder for disintegrating of material, particularly of rock

Claim 1

A mining cutter bit and holder assembly comprising a cutter element for use in a mining tool for disintegrating rock and the like having a carrier on which a plurality of said assemblies are mounted to revolve about a common axis, comprising a cutter element secured at the end of a supporting shaft having a central longitudinal axis, said cutter element having a shape of a solid figure of rotation and being provided with a peripheral working surface and a frontal base, defining between them a cutting edge, the axial section of the peripheral surface forming with a plane passing through the cutting edge and perpendicular to the longitudinal axis an angle between 40°-120° and a holder mountable on the tool carrier, said holder having a recess the axis of which extends outwardly at an angle to the common axis of rotation, for receiving the shaft of the cutter element and means for retaining said shaft in said recess to permit rotation of said cutter element relative to said holder about the longitudinal axis of said shaft while preventing axial movement of said shaft therein.