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"What, sir, would you make a ship sail against the wind and currents by lighting a bonfire under her deck? I pray you, excuse me, I have not the time to listen to such nonsense."
Napoleon Bonaparte ; When told of the Robert Fulton steamboat
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| Number | Title | Issue Date |
| 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 adjusting device, The adjusting device functions to adjust the center d... | 05/06/2008 |
| 7363734 | Lubricated trench wall cutter with remote lubricant inlet port The invention relates to a trench wall cutter comprising a bearing shield, on which at least one cutting wheel is supported in a rotatable manner. Between the cutting wheel and the bearing shield at least one sealing member is provided. For the lubrication of the se... | 04/29/2008 |
| 7363733 | Device and method for making a trench wall in the soil The invention relates to a device for making a trench wall in the soil comprising a frame, at least one lower cutting/mixing wheel arranged at the bottom of the frame, at least one further, upper cutting/mixing wheel arranged at the top of the frame, wherein the fra... | 04/29/2008 |
| 7278228 | Hinged tooth The invention relates to a hinged tooth for a cutting wheel comprising a pivot bearing for pivotally supporting on a pivot pin located on a cutting wheel hub, a cutting tooth support extending from the pivot bearing and a steering arm extending from the pivot bearin... | 10/09/2007 |
| 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 section which is followed by a series of auger flights for conveying the ... | 03/20/2007 |
| 7178273 | Cutting device for cutting trenches in the ground A cutting device for cutting trenches in the ground having at least one cutting wheel drivable in rotary manner and at least one first cutting element, located on the cutting wheel, for removing soil material during a rotation of the cutting wheel in one rotation di... | 02/20/2007 |
| 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 turning operation. For boring a boring hole (H) with a cross-section... | 10/10/2006 |
| 7114271 | Cutting tool for digging trenches, and enabling the cutter head to be changed quickly The invention relates to a cutting tool for digging vertical trenches, the tool comprising: a jib (B); a cutter structure (34; C) suspended from the jib via a cable; a plurality of cutter me... | 10/03/2006 |
| 7040417 | Drilling systems The present invention discloses, in certain aspects, systems and methods for producing cyclical impacts and, in certain aspects for moving a drilling apparatus for drilling a borehole in a formation, the system in certain embodiments including a housing with a longi... | 05/09/2006 |
| 6944977 | Drum for an excavator that can be used in particular for the production of vertical trenches in hard or very hard soils Excavator drum for the production of vertical trenches, including a cylindrical shell (22) mounted so sa to rotate about its axis of revolution and a plurality of excavating tools (28, 30) mounted on the external face of the shell. The tools include a ... | 09/20/2005 |
| 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 which is followed by a series of auger flights for conveying... | 01/20/2004 |
| 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 imaginary line normal to a front surface of the cutting he... | 07/08/2003 |
| 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 provided. Between the drive mechanism and the drive pinion ... | 10/12/1999 |
| 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 during straight drilling and the angular velocity is periodica... | 08/17/1999 |
| 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 capable of being rotated onward and backward angularly arou... | 03/02/1993 |
| 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 an axis substantially perpendicular to the plate, each of... | 07/04/1989 |
| 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 hub. The hinged teeth have two arms, one arm serving as a... | 05/30/1989 |
| 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 to said plate. One or more movable fingers are mounted on... | 04/25/1989 |
| 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 and which is partly arranged in recesses of a bearing brac... | 09/22/1987 |
| 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 position close to the axis of a well and a peripheral pos... | 12/16/1986 |
| 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 supporting a plurality of cutting devices and a generally c... | 12/04/1984 |
| 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 cutters for cutting corners in the hole cut by the latter.... | 08/23/1983 |
| 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 the movable mounting means so as to guide said mounting me... | 07/05/1983 |
| 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 apparatus. The mining machine includes cutting apparatus ... | 06/03/1980 |
| 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, and an elongated housing incorporating a drive mechanism ... | 03/13/1979 |
| 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, and a pair of wing cutters mounted to the body member for... | 04/04/1978 |
| 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 drill at the same time. One is the pure rotary motion of ... | 02/21/1978 |
| 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 are so arranged that they will touch each other or are radia... | 01/31/1978 |
| 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 a carriage movably mounted on the support structure for lo... | 11/22/1977 |
| 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 conveyors. Each auger conveyor has a shaft and a flight around... | 07/19/1977 |
| 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 cantilever support booms each having a forward portion and a rearwa... | 07/12/1977 |
| 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 valuable material such as coal. As spoil is removed in forming ... | 05/24/1977 |
| 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 apparatus includes bearings which are journaled on each end of t... | 04/05/1977 |
| 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 in the proper axial, transverse and rotational position f... | 10/05/1976 |
| 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 support to be received by an endless bucket conveyor which c... | 06/29/1976 |
| 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 periphery and have free ends. Said cutter bits are arranged i... | 05/25/1976 |
| 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 preparing the rock formation for in situ extraction of the r... | 05/18/1976 |
