Abstract: A device for driving boreholes in the ground, having a rotationally driven main shaft with a shaft journal whose axis (B) forms an acute angle with respect to the axis (A) of the main shaft. A drill head is mounted such that it can rotate about the axis (B) of the shaft journal and has a circumferential region which runs on a complementary circumferential region, wherein the complementary circumferential region can be set rotating.

Abstract: The invention relates to a device for drilling a bore in the ground, comprising a drive system with a connecting rod assembly that extends from the drive system into the ground. The end of said assembly pointing towards the face or base of the bore is connected to a tool head (40). The device also comprises several tools (41) that are located on the tool head (40) and work on the face or the base of the bore. The inventive device is characterised in that each tool (41) comprises an excavation disc (45) and elements that cause the excavation disc (45) to oscillate during operation.

Abstract: In the drawworks for lowering and withdrawing a load, in particular a drilling or a drilling plugging device, in particular for use on floating drilling platforms, which drawworks has at least one brake arrangement for braking and holding the load, an emergency brake device is provided for producing an additional braking force.

Abstract: The tunnel rock drill (100) for driving a tunnel bore optionally in open or shielded mode comprises a shield tail (33), which is connected to the drill head (10) and which covers optionally the bore wall over a defined length; a bracing device (20), which can be optionally fixed in the tunnel bore; at least one optionally activaatable advancement device (25), which, on the one hand, rests on the bracing device (20) and , on the other hand, acts on the drill head (10); and an optionally activatable force generator (35), which has a variable length and which, on the one hand, rests on a tubbing support (32) and, on the other hand, acts on the drill head (10). To introduce the advancement forces into the drill head in open mode, there is an inner kelly (16), which can be moved in the direction of boring in relation to the bracing device (20) and to which the advancement generator (25) is hinged and whose breast-sided end bears the drill head (10).

Abstract: A drilling tool for drilling bore holes into the ground and for removing the drilled material using an air-lifting process. The drilling tool has a drilling head equipped at its lower surface with curing elements, whose upper surface is connected to hollow drilling rods having an inner conveying channel and from whose lower surface boring material mixed with a rinsing liquid is removed via the conveying channel. At the lower surface of the drilling tool head, inside a radial channel connected to the conveying channel, a cross-flow of the rinsing liquid, flowing radially inwards and having a high flow velocity, is produced for the purpose of carrying along the boring material.

Abstract: To separate relatively long upright pipes (13) which have a relatively large diameter, the lower end thereof being fixed in the ground, in particular of support legs (3) of an off-shore oil bore or conveying platform (100), a cutting unit is lowered down into the pipe (13) to a separation point. The cutting unit (40) acts gradually from the inside across the periphery to the internal periphery of the pipe (13) and cuts through the pipe (13) by removing metal. A bore tool head (60) is mounted upstream of the cutting unit (40), viewed from the lowering position, and is used to bore out material in the pipe such as ocean bed or concrete.

Abstract: A device for drilling a bore hole in the ground comprised of a rotary drive head and a hollow Connecting Rod Assembly on which the rotary drive head acts and which can be lowered into the hole in the ground through the rotary drive head. A tool head with several Drilling Hammers that work downwards and that are operated with a fluid driving medium are provided on the lower end of the Connecting Rod Assembly. In the case of an initial design form, a Rotary Connecting Head is located in the upper area of the Connecting Rod Assembly; a fluid driving medium under high pressure can be supplied to the upper end of the Connecting Rod Assembly through the rotary connecting head, and the rotary connecting head has a transition chamber in its Housing, sealed in the axial direction towards both sides and connected to an external Supply Line for the fluid operating medium.

Abstract: An automatic control of the operation of a machine used for excavating drifts, tunnels, stopes, caverns or the like of a predetermined profile having a rotatable head (10) and cutting arms (14, 16) mounted on the head for rotation therewith, extending in the direction of excavation with at least one cutting arm (14, 16) being radially pivotable. The angular position (.phi.) of the head (10) is continuously measured and the output signals from these measurements are processed by the computer (44) which controls the angular positions of the head and of the arms according to a predetermined profile code or program stored in the computer memory for cutting the predetermined profile. Additional sensors (54,56) may be provided to control other parameters such as RPM of the rotating head, the force exerted on the arms, the positioning of the machine and the like.

Abstract: 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 least one tool (54) on a tool arm (51), a central region (Z) of the rock face is cut radially from the outside inwards by pivoting of the tool arm (32), an outer region (A) surrounding the central region (Z) of the rock face is cut radially from the inside outwards by pivoting of the tool arm (32). Pivot drives (30) for at least some tool arms (31, 32, 33) can be controlled in such a manner that cross-sections with contours deviating from a full circular shape can be cut. Muck removing devices (27, 28) are used for collecting and transporting away the muck produced by the cutting operation.

Abstract: Releasable spider-type clamping apparatus for clamping to the end of a pipe comprises a system including a normal industrial line connection between a supply and control unit and the spider and a controllable operating device on the spider itself for operating and adjusting the clamp members, at least for the purpose of releasing them in the event the normal industrial line connection fails, the operating device comprising a pressure medium system with at least one pressure medium storage device and a wireless remote control and/or manual system.

Abstract: The apparatus prevents undesirable rotation of screw bolts or the like provided at their ends with spanner working surfaces, in particular large screw bolts. Adapters are positioned individually on the said ends of the screw bolts and each has opposing surfaces adapted to the spanner working surfaces of a screw bolt. Carriers are pushed onto the adapters and each have internal teeth which can be brought into mesh with external teeth of the adapter. A holder mounts least two carriers with slight angular mobility, at a spacing corresponding to the axial interval between screw bolts.

Abstract: To modify a given profile of an adit, tunnel, gallery or the like, particularly a circular profile so as to give it the shape of a vault, a sequence of individual recesses are made in the longitudinal direction in the wall of the adit by a boring head advanced in the direction of its axis of rotation and transversely to the longitudinal direction of the adit. The recesses preferably overlap one another. Apparatus for implementing the method comprises a heading device for moving in the direction of the wall of the adit a boring head provided at its front end with tools.

Abstract: A manipulator for parts which are to be moved during the opening and closing of an orifice provided with a cover comprises a driving device for moving a support along a guide parallel to the central axis of the orifice. A path-translating transmission is provided between the driving device and the support so that the stroke length of the driving device is shorter than the resultant path of the support.

Abstract: A toothed tool body for a rotary drilling tool suitable not only for work normally performed with toothed roller bits or the like, but also advantageous in loamy or similar formations, has ribs extending peripherally between the teeth up to the tooth flanks and having a cross-section falling on both sides from a peak region, more particularly a roof-like cross-section. The peak region of the ribs is lower than the tips or edges of the teeth in the radial direction of the tool body.

Abstract: A method for treating or aiding in the treatment of the manifestations of alcoholism or alcohol intoxication by aiding in the control of the craving for alcohol or by aiding in the control of alcohol withdrawal symptoms, or by aiding in the control of alcohol intoxication in a human which comprises internally administering to said human an effective amount of a compound having an active ingredient containing at least one bivalent negative sulfur to control said craving, symptoms, or intoxication so as to counteract the effects of alcohol.

Abstract: A method of and apparatus for sinking essentially vertical bores, in particular large-hole bores, shafts or the like, the bore direction being pre-determined for a bore head or the like, rotatable by means of a set of bore rods, using a device which may be fixed with respect to the borehole wall after a bore section has been bored, wherein the device is released, the bore head is moved in a stationary state into a position suspended on the bore rods and then the direction is determined for the next bore section, the diameter of the bore head for determining the direction of the next bore section being changed from a relatively larger to a relatively smaller size.

Abstract: An apparatus for producing an upwardly directed drill hole with feed cylinders and a clamping cylinders contains a pressure medium system with a pump, a supply duct and a control valve. In order to attain a particularly favorable and simple design, a second pump is provided, for feeding a second supply duct, from which at least one branch duct containing a choke or the like leads to the drilling head or its tools. The control valve is provided between the first pump and the first supply duct for one set of sides of the clamping and feed cylinders.

Abstract: A holding device for a boring head tool and the tool itself are arranged so that the tool can be mounted from the rear of the boring head. The tool is mounted on a supporting member which has head parts provided with supporting faces and the holding device has rigid support surfaces for engaging the supporting faces of the tool. The support surfaces are directed towards the front of the holding device and the holding device also has passages extending from the rear to in front of the rigid support surfaces as to allow the passage therethrough of the head parts for assembly. The head parts are conveyed through the passages in rotated positions offset with respect to their position in the assembled state and then moved to an assembly position in which the contact surfaces of the tool are held against the rigid support surfaces of the holding device by fastening screws which engage in threaded bores of the head parts.

Abstract: Producing a vertical or inclined drill hole by full profile drilling taking place upwardly from a starting location and utilizing a rotatable and displaceable drilling tool and a train of drilling rods which lead to the drilling tool, wherein the drilling tool is, together with the train of drilling rods, subjected, in the vicinity of the upper end of the train of drilling rods, to a force applied in the feed direction, at least part of the reaction of this force being transmitted to a counterabutment which can be releasably secured in the drill hole, and the driving torque for the drilling tool being produced at the starting location and mechanically led from there to the drilling tool.

Abstract: Apparatus for interchangeable mounting of rollers, comprising a roller unit having a shaft or axis with at least one roller arranged thereon and having two end members, a frame with a holder into which the roller unit is insertable from above, and lifter elements provided in or on the frame and by means of which the roller unit is displaceable between an operative position in which it is supported in the frame by supporting bearer members and a raised interchanged position in which it is removable from the frame.