Mining or in situ disintegration of hard material – Hard material disintegrating machines – Rotary cutter head with advance direction coincident or...
Patent
1975-04-09
1976-09-14
Purser, Ernest R.
Mining or in situ disintegration of hard material
Hard material disintegrating machines
Rotary cutter head with advance direction coincident or...
173 35, 173148, E21C 2722
Patent
active
039803422
ABSTRACT:
An auger type mining machine in which the rotational torque necessary to do the mining is supplied separately and independently from the force required to advance the auger, and is provided by a motor having a stator portion insulated from, secured to and contained within a casing and disposed in concentric relation to the auger, and a rotor portion of the motor insulated from and attached to an inner drive member which is also disposed circumferentially about the auger in driven relationship to the stator portion of the motor. The force required to advance the auger is supplied through a thrust member which is movable between a rearwardmost position which is at least one auger length from the rearmost portion of the auger drive, and a forward position which is at least as far forward as the rearmost portion of the auger drive so that when the thrust member is in the rearmost position an additional auger section may be attached to the rear of the previously inserted auger section and fed through the auger drive means by the thrust member.
REFERENCES:
patent: 1653111 (1927-12-01), Lobbey
patent: 1728914 (1929-09-01), Berry
patent: 2634950 (1953-04-01), Allen
patent: 2940740 (1960-06-01), Adams
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