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Document Title |
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7559161 |
Soil working method and apparatus
A soil working method, in which a soil working device suspended on at least one supporting cable is lowered by a supporting device and introduced into the ground. Subsequently, the soil working...
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7367143 |
Cutter and method for working the soil
A cutter for working the soil includes a cutting frame, at least two cutting wheels that are supported on the cutting frame in a rotatably drivable manner about parallel axes of rotation, and an...
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7192094 |
Auger flight support system
An auger support assembly for use with an augering system for mining which bores a pair of side-by-side holes through a coal seam using dual side-by-side augers. Each auger includes a drilling...
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7120565 |
Method and apparatus for determining figure
The present invention aims to provide apparatus and method for determining non-circular figure to drill boring holes having a regular N-polygonal cross sections while retaining the advantage of the...
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6679559 |
Auger flight support for plural auger coal mining systems
An auger flight support for use with an augering systems for mining which bores a pair of side-by-side holes through the coal seam using respective augers. Each auger includes a drilling section...
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6588515 |
Drill bit for directional drilling
The invention provides a rock drilling bit with a plurality of cutting teeth raked into the cut of the drilling bit. Such teeth are oriented at an angle of at least about 30 degrees relative to an...
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5964305 |
Trench wall cutter
A trench wall cutter with a drive mechanism which is attached to the cutting frame in a position which is spaced away from the bearing shield with a gear for driving at least one cutting wheel is...
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5937954 |
Method for directional drilling
In a method for directional drilling with the aid of a drilling device having a drill pipe and a mining tool which moves on an orbit, the tool moves at an essentially constant angular velocity...
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5190407 |
Rectangular shield excavating machine
A rectangular shield excavating machine comprises a quadrangularly tubular shield body having a space for receiving an excavated matter at the front end, a rotor disposed in the space so as to be...
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4844549 |
Milling machine for digging trenches in the earth
A milling machine for digging trenches in the earth, of the type comprising at least one substantially vertical support plate on both sides of which two milling drums are mounted for rotation about...
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4834197 |
Trench cutter
A trench cutter has cutting wheels with radially projecting cutting teeth and is arranged on a bearing bracket. Along the bearing bracket, hinged teeth are arranged on one edge of the cutting wheel...
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4824176 |
Milling engine for excavating trenches in the ground
A milling engine for cutting trenches in ground or soil provided with at least one vertical support plate on both sides of which milling drums are supported for rotation about an axis perpendicular...
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4694915 |
Slotted wall milling cutter
A slotted wall milling cutter for producing a slotted wall in the ground has a drive motor fixed to the cutter frame and a gear means positioned between the drive motor and two cutting wheel gears...
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4629010 |
Process and device for sinking wells
A device and process for sinking vertical wells. A pair of rotary digging heads have horizontal axes mounted on supports for movement of such axes towards and away from each other between a central...
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4486050 |
Rectangular tunnel boring machine and method
A machine for boring a tunnel having an end face wall, a roof wall, a bottom wall, and opposite side walls. The machine comprises a rotatable cutting wheel means having an annular peripheral wall...
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4400036 |
Corner-cutting mining assembly
A mining assembly includes a primary rotary cutter mounted on one end of a support shaft and four secondary rotary cutters carried on the same support shaft and positioned behind the primary...
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4391472 |
Core eliminator for mining, road working or earth moving machinery
A core eliminator for mining, road working or earth moving machinery in which a bit carrying mounting means is movably secured to a driven element. Means are associated with the driven element and...
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4205881 |
Machine and method for mining hard material in-situ between adjacent auger holes
A machine for mining hard material in-situ between adjacent auger holes is disclosed which is suitable for being drivingly connected to a conventional mining apparatus, particularly an auger mining...
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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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4082362 |
Apparatus for coal mining in-cutting and out-cutting
Apparatus for forming bores and coal seams and the like and enlarging preexisting bores. A mining machine includes a nonrotatable body member, a conveyor in line with the body member, a pilot head,...
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4074778 |
Square hole drill
A square hole drill having a cutterhead configuration whose outline is in the form of a Reuleaux triangle and which also has a planetary gear drive. Two counter revolving motions are present in the...
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4071100 |
Method of making holes of selected external configuration in preferably rock or ground formation, and a drilling machine for carrying out the method
In a method of making holes of selective external configuration in a rock or earth formation, two or more rotatable drills provided with drill crowns are driven into the ground. The drill crowns...
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4059163 |
Mine drilling apparatus and method
A drilling apparatus comprises a support structure adapted to be moved on rails to position a drilling assembly mounted thereon adjacent to a selected drilling site. The drilling assembly includes...
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4036529 |
Support system for a unitized pair of auger conveyors
In an auger mining system which forms an opening in the earth comprising a pair of axially aligned cylindrical holes and wherein the opening has a bottom, the system has a pair of side-by-side...
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4035024 |
Hard rock trench cutting machine
A hard rock trench cutting machine includes a main body assembly, a cutter wheel assembly, and a longitudinal thrust assembly. The main body assembly includes two longitudinally extending...
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4025119 |
Method and apparatus for strip mining
A method of strip mining in which a plurality of vertical shafts of square cross section are formed closely adjacent to one another with each shaft extending through overburden and a layer of...
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4015674 |
Apparatus for unitizing a pair of augers
Apparatus for unitizing a pair of side-by-side augers when each auger includes a shaft, a mateable rotational coupling on each end of the shaft, and flightings along the shaft, the unitizing...
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3983949 |
Auger section positioning means
Auger apparatus, such as a coal mining machine, adapted to utilize one or more augers each formed of a string of auger sections, and comprising means for transferring auger sections into the string...
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3965995 |
Machine for boring a large diameter blind hole
A cutter wheel is mounted at the lower end of the machine for rotation about a horizontal tubular support. Cuttings are picked up by buckets on the cutter wheel and are directed into the tubular...
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3958832 |
Drum mining head with cutter pattern
A tool body defines an axis of rotation for the tool and has a periphery surrounding said axis. A plurality of cutter bits are carried by said body and protrude substantially radially from said...
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3957305 |
In situ values extraction
The invention is directed to a method of in situ extraction of a constituent of a rock formation, e.g., copper deposits or particular petroleum deposits as found in oil shale, and to a method of...
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3912025 |
Multiple cutting head assembly for auger mining machine
A multiple cutting head assembly for an earth auger machine such as for mining coal from an open pit. The multiple cutting head assembly has a plurality of rotatable cutting heads rigidly fixed to...
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3903624 |
Apparatus for excavating, shoring and backfilling a trench
A screw auger is operated at the bottom of an excavation for undercutting and dislodging the earth while shoring members are being inserted into the ground. The screw auger is associated with a...
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3894587 |
Device for drilling in hard rock formation
The invention concerns a drilling device having a plurality of rotary drilling members arranged to rotate about axes transverse to the drilling direction. Said drilling members are arranged in...
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3883177 |
Diamond drill and rock fragment excavation device
In a preferred embodiment of the invention, there is provided a subterranean cavern excavated by conventional methods and with conventional support structures and floor, with vertically extending...
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3856357 |
COMBINATION ROTOR-BOX CUTTER MINING MACHINE AND METHOD OF MINING
A mining machine for the cutting and removal of coal from a coal seam comprising a plurality of rotary kerf cutting means, wherein the latter are utilized together with a surrounding "box" kerf...
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3710878 |
CHAIN CUTTER TYPE EXCAVATOR AND DITCH EXCAVATING METHOD
An excavator is provided with a box type casing including a pair of rotary cutters mounted on the bottom portion of the casing; blades provided at the outer periphery of the cutters provide...
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3663062 |
DRIVE FOR PLURAL AUGER MINING MACHINE
Auger apparatus, such as a coal mining machine, adapted to utilize one or more augers of a diameter falling in a wide range. Apparatus is disclosed embodying three augers in which two side augers...
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3643998 |
TUNNELING MACHINE FOR NONCIRCULAR BORES
To bore a noncircular hole a conventional tunneling machine is provided with two or more rotatable cutter wheels mounted at the rear of the machine and rotating about axes parallel, but offset...
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3614161 |
TRENCHING IN ROCKY SOILS
A method and apparatus for the excavation of trenches, more especially for the subsequent construction of subterranean walls, diaphragms or bulkheads, of the type in which an excavating device is...
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3612193 |
RECTANGULAR DRILLING FOR EARTH EXCAVATION
A drilling machine for forming a vertical hole having an oblong and somewhat rectangular horizontal cross section in the earth, comprising a supporting frame housing a driving means which drives a...
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3596724 |
CUTTING ROLLER
A cutting roller for use in rock-boring equipment and having two circumferentially extending parallel cutting ribs. Each rib is provided with a series of wear-resistant exchangeable inserts which...
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3593811 |
APPARATUS FOR DRILLING LARGE DIAMETER HOLES
Drilling of large diameter holes in the earth devices accomplished by means of a plurality of small drilling devices which move along a traversing bar to drill a number of small contiguous holes,...
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3524510 |
GRAVE DIGGING AND FILLING APPARATUS AND METHOD
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3509949 |
EXCAVATION OF TRENCHES FOR BURIED WALLS
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3473243 |
ROTARY AUXILIARY FEEDERS FOR EXCAVATING AND LOADING MEANS
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3459453 |
CONTOUR CUTTER FOR CONTINUOUS MINER
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3459452 |
TUNNELING DEVICE
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3459169 |
CHAIN SAW FOR CUTTING VERY HARD MATERIALS AND HAVING PLUNGE CUTTING MEANS
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3406767 |
Multiple auger assembly
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