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| Number | Title | Issue Date |
| 7289871 | Drilling apparatus The invention provides a drilling apparatus (1) having a base (2) from which a drilling arm is pivotally mounted. The drilling arm (3) has an inner arm (4) and an outer arm (5). The inner arm (4) has a first end (6) a... | 10/30/2007 |
| 6942301 | Method for boring and placing bolts for imbedding adhesively and device for carrying out this method A method and device for drilling and setting adhesive anchor bolts close to the mine face during the cutting operation of a tunneling or mining machine which is capable of being displaced on a traveling mechanism and includes a cutting cylinder or cutting head rotat... | 09/13/2005 |
| 5193883 | Process for controlling longwall shearing and heading machines along a cutting horizon between coal and rock Process and device for controlling longwall shearing and heading machines along a cut horizon between coal and rock. The horizon is produced by a cutting tool arrangement attached to the machine and followed by a sensor which distinguishes between coal an... | 03/16/1993 |
| 5013091 | Method of indirect measurement of cowl position on a longwall shearer The position of the cowl on a longwall shearing machine is determined by loads, stresses or deflections measured on the ranging arm, clevis and pin connection on the ranging arm or lift cylinder and its linkage to the machine.... | 05/07/1991 |
| 4981327 | Method and apparatus for sensing coal-rock interface The method and apparatus for sensing the coal-rock interface while longwall mining by placing the sensor in the cowl adjacent the shearer drum so that sensor on the leading drum can feedforward interface data for the control of the trailing shearer drum b... | 01/01/1991 |
| 4836613 | Cutterhead for water jet assisted cutting An integrated cutterhead for water jet assisted cutting which can be retrofitted to an existing machine by replacing its cutterhead. The pressure of the water supplied is intensified inside the cutterhead itself up to the level required for jet assist cut... | 06/06/1989 |
| 4740037 | Continuous mining machine A continuous mining machine includes a main frame mounted on tracks for mobility, a cutter head mounted on a subframe which is adapted to be moved toward and away from the front of the main frame, a conveyor to collect mined material and convey it to the ... | 04/26/1988 |
| 4645265 | Roller cutter loader for mine A roll cutter loader is guided on a plane guide and has a machine frame with cutter rolls pulled by a plane chain. The machine frame is subdivided into two machine joint elements each with a cutter roll and roll drive assembly. The two machine joint eleme... | 02/24/1987 |
| 4534676 | Excavating and propelling machine for laying pipelines underground An excavating and propelling machine for laying pipelines underground has a plum-pudding stone crusher device comprising a plurality of rod-shaped rotary teeth formed integrally on the rear face of a disk-shaped rotating cutter head in a manner of extendi... | 08/13/1985 |
| 4389073 | Apparatus for use with cutting drums of mineral machines A rotatable cutting drum of a mineral mining machine is supported by a pivotable arm and is operably associated with a blade or the like which is positionable to assist in loading mineral detached by the drum. The blade is carried on a ring-like support w... | 06/21/1983 |
| 4368925 | Cutter drum assembly for a longwall mining machine A cutter drum assembly for a longwall mining machine of the type having a cowl pivotal about the axis of the drum and nozzles on the periphery of its spiral conveying flights for directing a trickle of liquid onto the face area being mined. The cowl, whic... | 01/18/1983 |
| 4358159 | Apparatus for supporting the roof of an underground mine working Apparatus for use in supporting the roof of an underground mine working over a zone exposed by the passage of a mining machine along an upwardly extending face of the working and by which a flexible mat is applied to the roof which has been newly exposed,... | 11/09/1982 |
| 4351567 | Cowl-like scrubber for a long-wall shearer A cowl-like scrubber (20) for removing dust generated by a longwall shearer has a housing (21) adapted to be mounted on the shearer near a cutter drum. An air inlet (23) is provided in the housing to allow the dust-laden air to enter the scrubber (20). Do... | 09/28/1982 |
| 4346939 | Cowl assembly for longwall mining machine A cowl assembly for the cutter drum of a longwall mining machine, the cowl being arranged for pivoting or slewing movement about the cutter drum axis and having at least one driving motor to pivot it, the driving motor output gear meshing with a toothed a... | 08/31/1982 |
| 4290648 | Mining apparatus The present invention is directed to a mining apparatus which includes a position detection device comprising at least one projector and receiver to measure position of the apparatus in a mine by receiving projected signals reflected off an edge of the mi... | 09/22/1981 |
| 4290652 | Machine for the cutting of rocks in underground works The machine for the cutting of rocks in underground works comprises a slide way, a carriage on said slide way, a machine frame which is hinged relative to the carriage, an arm which is hinged relative to the machine frame, and a cutting drum mounted relat... | 09/22/1981 |
| 4251112 | Apparatus for pivotally positioning a clearing shield for a drum-cutter mining machine A rotary actuator is supported within the cutter drum of a drum-cutter mining machine for pivotally positioning a clearing shield about the outer peripheral surface of the cutter drum. A holder used to pivotally support the clearing shield from the cutter... | 02/17/1981 |
| 4239289 | Maneuverable full face miner A full face miner including a simplified conveying arrangement and designed for easy maneuverability into and out of mine sites. A plow operatively mounted to and longitudinally movable with each of a pair of rotatable cutting heads of the miner provide f... | 12/16/1980 |
| 4229043 | Cowl arrangements for mining machines A roll of wire mesh is supported on the rear of a cut mineral loading cowl of a rock or mineral winning machine. As the machine traverses along a path cut by the machine the wire mesh is paid out to retain or contain the roof material.... | 10/21/1980 |
| 4225186 | Horizontal mining machine and method of slot mining Mining apparatus for removing near surface narrow seams of mineral deposits such as coal without removal of overburden is disclosed. The apparatus comprises a horizontal coal mining machine which is adapted for use in cooperation with large scraper type e... | 09/30/1980 |
| 4196935 | Equipment for laying elongate material Equipment for laying a layer of wire mesh adjacent to a newly exposed mine roof comprises storage means (10) for a roll of mesh (11) and resilient guide means (12) for guiding the mesh (72) as it unwinds towards the newly exposed mine roof (5).... | 04/08/1980 |
| 4185876 | Plural spaced cutter drums on pivotable elongate arm with loading means in the space A gearhead for a shearer type mining machine comprising an elongate arm pivotally attachable at or about its mid-position to a shearer type mining machine to provide an arm pivot axis extending laterally with respect to the longitudinal axis of the arm, t... | 01/29/1980 |
| 4120390 | Crossover dump and conveyor advancer A crossover dump and conveyor advancer for a main conveyor means supported by a movable pan line. The crossover dump includes a tunnel portion through which the pan line extends and entry and reentry ramps supporting portions of the main conveyor are prov... | 10/17/1978 |
| 4108496 | Paddle wheel pick-up The invention refers to a paddle wheel type pick-up device for loading stored piled bulk materials or the recovery of mined minerals. The pick-up arrangement is supported on the frame of a carriage parallel with the breakdown front of the stored pile, or ... | 08/22/1978 |
| 4068894 | Mining machine cowl assembly A cowl assembly for use in association with the shearing drum of a mining machine has an arcuate cowl member and a cowl arm connected to the cowl member, the cowl arm having an annular mounting member at the end thereof remote from said cowl member to ena... | 01/17/1978 |
| 4065184 | Plow cutter assembly A plow cutter assembly to be used in the strip mining of coal, the assembly comprising a container having a plurality of steel spikes mounted at an angle on its lower face. A hoist pulls the assembly along the face of a coal vein and the spikes shave off ... | 12/27/1977 |
