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7490911 |
Drive device for rotating and oscillating a tool, and a compatible tool for mining
A drive device for rotating tools operating with oscillation superimposition, including a drive housing, a carrier sleeve mounted rotatably within the drive housing, a drive shaft mounted rotatably...
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7017999 |
Workpiece carrier
Separating members are provided at both ends in a moving direction of each of workpiece mounting seats of a carriage. Each of the separating members separates an elastic seal blade, which seals an...
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6666523 |
Reef miner with disk and drum cutters
A mining machine is employed in a mechanized method for removing mineral from a reef in a rock face. The mining machine comprises a first cutting disc rotatably mounted on one side, a second...
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6561590 |
Cutting device with rotating disc
A rock excavating or cutting device including a disc cutter that is driven by drive means to rotate in an oscillating and nutating manner by driving the disc cutter about separate oscillating and...
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6244664 |
Extendable end assembly for a mine face cutting roller
In a hewing or cutting roller (1) of variable cutting width, in which two pivotable tool carriers (4, 5) for receiving cutting or hewing tools are arranged on at least one lateral end face (2) of...
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5626197 |
Road scraper having vertically and horizontally displaceable auxiliary scraping device
An improved road scraper includes a second scraping device mounted at a rear end of a road scraper of a known construction having a first scraping device. Between the road scraper and the second...
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5340199 |
Method and machine for excavating drifts, tunnels, stopes, caverns or the like
To excavate drifts, tunnels, stopes, caverns or the like, tools operating in an undercutting manner are mounted on radially pivotable tool arms, which are located on a rotary working head. With at...
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4887868 |
Dual auger continuous mining machine
A continuous mining machine comprising a forward cutter assembly connected for horizontal pivotal movements with respect to a rearward assembly mounted on the endless track assembly. The cutter...
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4749194 |
Sectional cutting machine used to cut curved gallery cross-sections true to profile
Sectional cutting machine used to cut a curved gallery cross-section in underground mining and tunneling operations with cutting rollers arranged in a movable way in regard to the machine frame....
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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,...
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4655507 |
Continuous miner
A maneuverable mining machine is disclosed. The mining machine has a chassis with at least one cutting head mounted on the front of the chassis and adapted to cut into a mine face extending...
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4449755 |
Thin seam mining machine
A low profile thin seam miner includes a main frame mounting a lower transverse axis rotary cutter and a parallel axis conveyor rearwardly of the lower cutter. The main frame also mounts a forward...
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4392689 |
Pavement milling apparatus
Apparatus including a vehicle and rotor means carrying cutter structure is provided, for removing pavement in linear trench configuration or configurations.
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4341424 |
Mobile dual auger continuous mining machine with multiple movement capabilities
A continuous mining machine comprising a cutter assembly including a cutter frame, a pair of oppositely pitched independently vertically movable auger cutters having their axes of rotation disposed...
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4266828 |
Apparatus on drum shearer for cutting through safety wall in long wall mining
A safety wall treating method employed in the coal mining operation at the long wall face of a coal mine comprises shearing the long wall face leaving safety wall(s) at one or both side(s) of the...
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4248481 |
Tunnel driving apparatus with cutter arms internal and external of support tube
Tunnel driving apparatus employs a hollow support tube positioned axially centrally inside a drive shield. An inner cutting machine is supported and positioned inside the support tube and serves to...
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4231618 |
Tunnel-excavating machine
A tunnel-excavating machine in which a chassis carrying a cutting drum is displaceable toward the face of a subterranean structure in which a tunnel is to be formed, the chassis being provided...
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4225189 |
Continuous mining machine and cutter drum drive therefor
A cutter drum member of a continuous mining machine is rotatably mounted on the front end of the machine. The drum member includes an intermediate section and a pair of canted end sections. Cutting...
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4169629 |
Tunneling machine with plural adjustable arms carrying single cutter
Machine for the digging of passages, galeries or tunnels in underground work, of the type in which the stoping device consists of a single stoping drum or mill of which the axis of rotation is...
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4166652 |
Mining machine, particularly for the working of low mine seams
A drum cutter-loader machine includes discrete units joined together by tie bolts extending transversely to the direction of advancing movement along a face conveyor. The units in succession from...
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4143919 |
Mining machinery with guideway for relatively movable cutting units
A mining machine comprises two cutting units each including a rotatable cutting head having cutting faces directed forwardly and rearwardly with respect to the direction of movement of the machine,...
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4106815 |
Mining machines
A mining machine adapted to be driven forwardly towards a working face comprises one or more cutting booms projecting forwardly from the machine, a cutting tool mounted on the forward end of the or...
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4080000 |
Tunnelling machine
An excavating and/or tunneling machine having a mobile support unit with suitable endless tracks for advancing the unit. The support unit serves as the base or chassis for an excavating screw,...
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4076316 |
Continuous mining machine with laterally movable cutter drum member
A self-propelled body portion is provided with a forwardly extending boom member pivotally secured thereto. The boom member includes a pair of parallel forwardly extending arm members that are...
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4070062 |
Method of and apparatus for disaggregating particulate matter
A cutting-chipping system comprising an interconnected triaxial array of rotating drums each mounted for independent rotation. Each drum includes a plurality of spaced, outwardly extending teeth to...
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4037875 |
Full face miner
A miner especially adapted for high-production mining of low-coal seams (24-36 inches thick) while providing maximum miner safety and complying with applicable federal safety regulations. One or...
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4027918 |
Longwall coal mining machine with plural cutters on sub-ranging arm
A coal mining machine intended to be used in a pit having a long-walled pit face and having a mechanism in which two cutting drums are attached to the main ranging arm of a ranging drum shearer...
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3998493 |
Combined milling and impact apparatus for tunneling
A support displaceable along a tunnel or gallery floor by means of a caterpillar drive is provided with a rotatable milling tool that can be brought into engagement with a lower portion of a face...
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3979151 |
Rock excavating arched tunnel forming machine
A rock excavating machine for forming an arch type underground roadway includes a base carrying a forwardly extending cutter carrying arm having a cutter for cutting rock adjacent to the roadway...
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3907368 |
Kerf cutting machine
Kerf cutting machine for undercutting the solid material from the face of a mine vein includes a mobile body portion and a pair of scroll-type auger units rotatably mounted in spaced parallel...
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3870369 |
Device for use with tunnel driving machines
A device constituting a cutting jib or arm for mounting on a rotatable platform of a tunnel driving machine. The device has a main elongate body one end of which is attachable to the platform. A...
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3840271 |
TUNNELING MACHINE HAVING SWINGING ARMS CARRYING CUTTER DISCS
Disc cutters are mounted at the forward end of support arms which are connected at their rear ends to a rotor which extends transversely of the tunnel. The rotor is driven to swing the support...
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3799615 |
TUNNELING MACHINE HAVING GENERATOR MEANS FOR LIQUID JETS CARRIED ON CUTTER HEADS
A machine for making tunnels through rock by slitting the tunnel front wall by means of high speed liquid jets which machine comprises a main frame, a carrier movably mounted thereupon, a cutter...
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3718369 |
CUTTING DRUMS FOR MINERAL MINING MACHINES
The invention relates to cutting drums for mineral mining machines, such as the type of machine used in mineral mining to drive a roadway and to cut a stable for advancing a longwall face. The drum...
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3666320 |
LONGWALL MINING MACHINE
A longwall mining machine is described which has cutting rolls pivotally mounted about horizontal axes on a machine housing. The support arms enclose spur gears which are in engagement with each...
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3663054 |
MACHINE FOR DIGGING UNDERGROUND GALLERIES
The invention relates to a machine for digging underground galleries. This machine comprises a framework displaceable in the gallery, at least a pair of homologous arms connected to this framework...
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3647263 |
TUNNELLING MACHINES AND THE LIKE
A tunneling machine is provided with one or more cutter heads with rotary cutters driven by a motor in each cutter head and swingably mounted in a front frame portion of the machine on an axis...
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3623771 |
DRILL-AND-BLAST EXCAVATING APPARATUS AND METHOD
Drill-and-blast excavating apparatus has a powered carriage having a forward end which confronts a face in a geological formation; supporting arm members pivotally mounted on the carriage;...
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3612610 |
CONTINUOUS MINER HAVING OSCILLATING ROTARY CUTTER MEANS WITH SPIRALLY ARRANGED CUTTERS
A continuous miner comprising a chassis which mounts a vertically movable boom supporting a pair of cutter carriers continuously laterally oscillated towards and away from each other during the...
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3550961 |
MINING MACHINE
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3492048 |
MINING APPARATUS
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3480328 |
OSCILLATING ACTUATING MEANS FOR MINING HEADS OF RIPPER MINER
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3469885 |
OSCILLATING CUTTER RIPPER MINER
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3460868 |
MINING MACHINE HAVING OSCILLATING CUTTING ARMS
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3446535 |
TUNNEL DRIVING MACHINE
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3443648 |
EARTH FORMATION UNDERREAMER
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3442554 |
MACHINE FOR CUTTING A ROADWAY IN UNDERGROUND WORKINGS
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3421796 |
RIB EXTRACTOR WITH A STEERABLE DRILLING HEAD STRUCTURE
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3420577 |
TUNNELLING MACHINE HAVING INDEPENDENTLY OPERABLE CUTTING HEAD AND CIRCULAR SAW
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3362753 |
Mining machine having an auxiliary cutter
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