Abstract: A mining cutter bit holder and mounting assembly providing for positive engagement of the load bearing surfaces between the holder and mounting base. The bit holder and mounting base cooperate to support the bit against lateral forces and inhibit rotation of the holder within the socket in the base. Load support surfaces are arranged so that as the bit holder is clamped in the base and positive contact is made between surfaces. Bit support surfaces are provided at the front and rear of the bit holder.

Abstract: Conveyor flight assemblies or more particularly improved connecting means for connecting a flight to a conveyor chain.

Abstract: A cutter bit assembly for use on, for example, a mining machine and having improved structure to ensure proper locking of a cutter bit in a cutter bit holder and to ensure proper seating of the bit holder in the supporting block therefor. The bearing surfaces between the bit holder and the block are formed so as to ensure full contact between the upper body portion of the bit holder and the block when a shank portion of the holder is secured within the block. The bearing surfaces on the body portion of the holder are angled so as to further ensure proper seating thereof.