Abstract: To provide a method of toppling a tower structure more safely, simply and quickly than in the conventional manner.

Abstract: A demolition hammer is provided that includes a housing that is reversible and a plurality of interchangeable wear plates. The demolition hammer may include a housing a housing having a first wall and a second wall opposite the first wall, and a power cell disposed within the housing, the power cell having a front face, wherein the housing is reversible such that the housing can be used with the power cell in a first orientation in which the front face faces the first wall and a second orientation in which the front face faces the second wall.

Abstract: The invention concerns a demolition arrangement for a remote-controlled working machine (1) equipped with a manoeuvrable arm (9), which machine, electrically powered and able to be driven on tracks (17), is principally intended for destruction and demolition work through the demolition processing with an impact tool (50) that operates through a hydraulically powered hammer (32) and where an operator walking next to the machine controls its various movements with a remote-control unit (4), which machine has a chassis (5) with an upper part (6) that is mounted in bearings on a lower part (7) in a manner that allows rotation for the rotation of the upper part in a horizontal plane around a vertical axis (8), whereby the manoeuvrable arm is supported at the upper part and including a series of arm parts (10, 11, 12) mutually joined to each other and that can be manoeuvred in a vertical plane by associated hydraulic cylinders (13, 14, 15), a link system (20) arranged at the free end of the arm that can be adjusted

Abstract: A continuous mining method includes operating a vibratory milling machine having a milling head, a base, and a milling tool to oscillate the milling head in a substantially linear reciprocating fashion relative to the base to move the milling tool along a milling axis; and advancing the vibratory milling machine in a work piece in a cutting direction and wherein milling axis is oriented at an attack angle relative to the cutting direction, the attack angle being between about 0 and about 40 degrees.

Abstract: A boom arrangement (1) for a scaling device including a scaling boom for supporting a scaling hammer, wherein the scaling boom is arranged for connection to a carrier vehicle, is distinguished in that the scaling boom (4,5) is pivotally supported by a boom column unit (3), which is arranged for pivotal connection to the carrier vehicle, that the boom column unit (3)includes a boom column (7), and a column bar unit (8) extending at a distance from that element, that the boom column and the column bar unit are pivotally connected to a column link (9) for forming a four-link mechanism, and that the column link (9) supports a bearing for a boom lift cylinder (12). The invention also concerns a scaling device.

Abstract: A formation breaking apparatus with increased wear-resistance is disclosed. In one aspect of the invention, the apparatus has an assembly attached to an end of an articulated arm. The assembly has an actuator in mechanical communication with an axially guided penetrator. The penetrator may have a body intermediate a proximate end and a distal end; the proximate end being adapted to communicate with the actuator, and the distal end comprising a hard material with a hardness of at least 63 HRc.

Abstract: The present invention is directed to a method for breaking rock and other hard materials using small-charge blasting techniques followed by a mechanical impact breaker. In small-charge blasting techniques, a gas is released into the bottom of a sealed hole located in a free surface of the hard material. The gas pressure rises rapidly in the hole until the gas pressure causes the hard material to fracture. The impact breaker is then used to complete fracturing of the material and to remove the fractured material.

Abstract: A displaceable working apparatus provided with a platform having an extensible boom and being displaced on a guide rail is disclosed. The apparatus has a main frame secured to a main support which is movably secured to the guide rail and a main stabilizing mechanism for immovably securing the main frame to the adjacent roof surface. An extensible boom having a working free end which is equipped with a working element and is pivotally secured to a rotating support base positioned under the main frame. The boom is rotatable on the rotating support base and is angularly positionable with respect to the rotating support base. A drive is mounted on the frame to displace the platform along the guide rail.

Abstract: A mine scaling tool having a base plate to which a collar is concentrically attached on one side and appropriately supported with gusseted rib plates. A relatively long, heavy walled tube is telescopically fitted within a reenforcing collar. The tube is cut at an oblique angle of approximately 15 degrees off vertical in the frontal plane at the end opposite the collar. A face plate is centrally positioned over the open end of the tube and adequately reenforced with gusseted rib plates and reenforcing bars. Picks are attached parallel to the face plate along all sides extending outwardly from the edges, thereby serving as tines.

Abstract: Soil materials are screened and crushed simultaneously in a bucket of an excavating machine having its back wall replaced by rotatable crushing and screening elements. The crushed and screened materials fall down through the back wall and the non-crushable materials with size exceeding the size of screen openings remain in the bucket for dumping in the pile of a coarse pieces.

Abstract: An excavating machine having a cutter head which is provided with both reciprocating impact hammers and a static pick. The impact hammers are mounted on either side of the static pick so as to flank this, and the tip of this can be extended or retracted relative to the tips of the hammers. The ripper pick can thus scarf out a mound of earth left between the two impact hammers, or can be extended to cut a channel into which the impact hammers then drive the adjacent material. The impact hammers can be tilted relative to the axis of the ripper pick so that their tips either precede or follow that of the pick as they are moved across the working face. The cutter assembly may be mounted to a tracked vehicle so as to extend forwardly from this for continuous mining, or laterally from this for long wall mining.

Abstract: Apparatus for removing deposits from the interior surface of a vessel wall including an elongated support column having its upper end attached to a cable to position the support column vertically within the vessel. A hammer assembly pivotally and rotatably attached to the lower end of the support column and a plurality of cylinders having one end pivotally connected to the lower end of the support column and a contact member at the other end for contacting the inner surface of the vessel wall to position the hammer assembly horizontally within the vessel. A motor on the lower end of the support column to rotate the hammer assembly about the longitudinal axis of the support column and hydraulic cylinders connected to the hammer assembly to pivot the hammer assembly relative to the longitudinal axis of the support column and to slide the hammer assembly relative to the longitudinal axis of the support column to position the bit on the hammer relative to the inner surface of the vessel wall.

Abstract: A piston and cylinder combination mounted on the end of an elongated handle projects into a chimney. A chisel is connected to the piston to reciprocate with the piston in response to high pressure air delivered to the cylinder. The chisel has a cutting edge which is offset from the axis of the piston to facilitate the chiseling of objections on the inside of a chimney.

Abstract: An equipment adapted to be installed on a working machine, for crushing a structure. A hydraulic piston-cylinder unit is mounted to a bracket member to be mounted to the wording machine, for angular movement relative to the bracket member about an axis of a piston rod of the hydraulic piston-cylinder unit. At least one of a pair of opposed arms has a forward end provided with a crushing member. The pair of arms are operatively connected to the piston rod for pivotal movement, between closed and open positions, toward and away from each other and toward and away from a plane including an axis of the piston rod. A wall of a cylinder of the piston-cylinder unit is formed with passageway supplying hydraulic fluid from a hose unit of the working machine, into the cylinder. A rotatable coupling enables the passageway and the hose unit to communicate with each other, even when the piston-cylinder unit moves angularly about the axis of the piston rod relatively to the bracket member.

Abstract: A method is provided for restoring a refractory lining for repeated use. The lining is present on a underlying wall surface and is still hot from a previous use when one induces thermal shock in the lining (e.g. by spraying water on it) so as to loosen it. The loosened pieces are then pried away from the wall surface, and they are removed from the area. The residual lining is milled to expose a sound, underlying wall surface, and fine particles, dust, and milled-off pieces are removed. The underlying wall surfaces are thus made speedily available for relining and reuse.

Abstract: Apparatus for cleaning accumulated spent alumina, dross, aluminum pads, refractories and carbon rods from an aluminum cell including a first platform supported on outrigger members for spanning the open top of the aluminum cell. The ends of the outrigger members carry edge clamping and traveler devices thereon which are alternately activated by hydraulic cylinders. In a locked position, the outrigger arms resist lateral and upward forces imposed by the digging and cleaning tools of the apparatus. In an unlocked position, the traveler devices support the outrigger members on an adjacent surface for movement along the cell. A turntable carrying a second platform is rotatably mounted on the first platform to permit 360.degree. rotation of the second platform. A mounting head is pivotally mounted on the second platform and carries an elongated extensible boom for controlled 360.degree. rotation about the longitudinal axis of the boom.

Abstract: The invention relates to an apparatus for demolishing a reactor shield wall. The apparatus has a pillar (2) extending from the top side of the reactor toward the bottom of the reactor, an upper support device (3) for supporting the upper portion of the pillar (2) at the top side of the reactor, and cutting devices (5, 6) mounted to the pillar so as to be upwardly and downwardly movable along the pillar (2). The pillar (2) is rotatably supported by the support device (3). The upper support device (3) has drive devices (30, 31, 32) for rotating the pillar (2). The cutting devices (5, 6) are caused to swing in the reactor interior by rotating the pillar (2). The drive devices are disposed at the top side of the reactor, and this permits easy maintenance and inspection.

Abstract: A movable device (1) for openpit mining has a plurality of excavating hammers (11) on a cantilever boom (2) being swivellable in height direction. For facilitating the continuous excavating work and for providing an adaptability to the varying angles of inclination encountered in openpit mining, at least part (23) of the carrier (6) or the carrier (6) itself is shiftable in transverse relation to the longitudinal axis (7) of the cantilever arm (2), so that on downward swivelling movement of the cantilever arm (2) in direction of the arrow (17) the whole carrier (6) or at least part (23) thereof can be shifted in transverse relation to the longidudinal axis (7) of the cantilever arm by a hydraulic cylinder-piston-aggregate (8), thereby maintaining a predetermined angle of inclination or angle of repose.

Abstract: A working platform for a drilling apparatus for stoping shafts, said drilling apparatus comprising a base (3) displaceable in the direction of the shaft (1) and a supporting arm (5) pivotably supported on said base. On the supporting arm is mounted a drilling device (8). The working platform (10) is fastened to the supporting arm by means of an articulated means (11) which permits a pivoting of the working platform with respect to the supporting arm around two pivot axes (B, C) perpendicular to each other so that the working platform pivots synchronously along with the drilling device as the supporting arm is rotated for drilling holes in the shaft in the shape of a fan and is adjustable into a horizontal position irrespective of the rotary position of the supporting arm.

Abstract: A poking system for use in checking the condition of and agitating the contents of a coal gasifier utilizes a carriage (22) for transporting a poker (50) around the gasifier from one poke hole (12) to another. The carriage (22) mounts a poker assembly (24) comprising a tiltable arm (30) controlled by hydraulic ram (36) and the poker is incrementally inserted into and with withdrawn from each pokehole (12) by means of a reciprocable slide (38) provide with poker engaging clamps (60) which are operated during the advance or return stroke of the slide (38) depending on whether the poker is to be inserted or withdrawn. A pyrometer (72) is provided on the arm (30) for detecting, during withdrawal, the location of that portion of the poker (50) which has been resident within the oxidation zone of the gasifier.

Abstract: A mining machine for performing a continuous mining operation in hard rock. The operating portions of the machine are mounted on substantial deck sections hingedly connected to each other to promote maneuverability of the machine in confined spaces. A mining implement capable of breaking ore from the solid is mounted on a rotatable, extensible boom and broken ore is collected by power operated means also provided on the machine. The machine may be adapted for remote operation through a remote hydraulic and/or electric control and may be provided with optional wheels or alternatively may be self propelled.

Abstract: An apparatus for removing the lining of a crucible furnace comprises a tubular support which can be introduced into the furnace substantially in the axial direction of the latter. A power-driven tool, for example a pneumatically operated chisel, is movable along the tubular support in engagement with the lining to be removed. Drive means operable from outside the furnace is provided for moving the tool along the tubular support. A suction means is connected to the tubular support for the purpose of extracting, through the tubular support, dust and lining fragments produced during the operation of removing the lining.

Abstract: A pivotal lock member (27) is secured to an earthworking apparatus (10) and a plurality of lock stations (28,29,30) are connected to a mounting assembly (21) which supports the earthworking apparatus (10) for rotation. The apparatus (10) can be rotated to a plurailty of angular positions and must be held against rotation in each position. The lock member (27) pivots in and out of engagement with the lock stations (28,29,30) to allow rotation or locking of the earthworking apparatus (10). The lock assembly (26) holds the earthworking apparatus (10) securely against rotary motion but allows some limited radial motion of the apparatus in a plane co-incident with a line of axial force generated by the operation of the earthworking tool (19).

Abstract: An apparatus for drifting openings in hard rock incorporating a carrier capable for travelling along the floor of the opening. A means of breaking of the percussive type is mounted on the carrier by means of a turnable jib with provision for turning about said jib in a vertical plane. There is also incorporated a means of loading with a mucking conveyor. Employed as the means of breaking with a percussion tool directly acting upon the rock so as to break same when the means of breaking is set into a given position. Also provided are means of shock-absorbing which serve to link up movably said means of breaking with said jib in order to absorb the undesirable deflections of the means of breaking when the percussion tool recoils from the rock at right angles to the longitudinal axis thereof and to return the means of breaking into the given position.

Abstract: An impact mechanism for rock breaking, pile driving and pile extracting, and the like, includes a head assembly (18) with a pair of shank members (24,26) movably mounted thereto and flywheel (76,78) and eccentric crankshaft parts (74) rotated by a motor (84). The crankshaft parts (74) intermittently contact one of the shank members (24,26) to drive it outwardly from the head assembly (18) by transmitting flywheel energy thereto. A biasing and dampening device (110) associated with each shank member (24,26) absorbs rebound energy from the shank member (24,26) and maintains the shank members (24,26) disengaged from the crankshaft parts (74) until it is positively urged thereagainst. The head assembly (18) is movably mounted at the end of an articulated arm (10) for maneuvering it into desired work position.

Abstract: An improved arrangement for operating a hydraulic hammer at a distance from the hydraulic supply. The hydraulic hammer which can be used for breaking rocks, concrete, and the like is disposed at the end of a movable boom, remote from its pressurized hydraulic supply. The hammer is connected to the pressurized hydraulic supply by flexible lines and is movable with respect to the pressurized supply. Disposed in series in the pressurized hydraulic supply line is a hydraulic motor. The hydraulic motor is mounted in close proximity to the hydraulic hammer at the end of the boom. The outlet port of the hydraulic motor connects to the inlet port of the hydraulic hammer. The hydraulic motor drives a suction pump which is also located at the end of the positionable boom. The hydraulic motor and the suction pump are movable with a mounting assembly which supports the hydraulic hammer at the end of the boom. The suction inlet of the hydraulic pump is directly connected to the outlet port of the hydraulic hammer.

Abstract: An industrial metallurgical delining assembly for dislodging and removing refractory or other material from upwardly open metallurgical process vessels. The assembly includes a spider-leg frame, the feet of which are supported on the upper periphery of the vessel, and supports a turntable over the top of the vessel. An extensible and articulatory boom depends from the turntable and selectively carries working tools at its free end for dislodging and removing material from the vessel. The vertical spacing between the uppermost end of the vessel and the turntable is sufficient to provide clearance for the boom to remove such dislodged material to a location outwardly from the vessel.

Abstract: A machine for cutting a slot in hard rock uses a percussive drill to slot the rock, the drill being so mounted that the tool has an obtuse angle to the base of the slot in the direction of advance, which angle is for optimum effect between 120.degree. and 145.degree. and preferably between 130.degree. and 140.degree.. The drill is oscillated and cuts on the forward stroke and free wheels on the return stroke. The drill may be adjusted to vary the angle and the angle of inclination to the horizontal.

Abstract: Apparatus for crushing building materials such as concrete blocks with a uniform pressure. Crushing jaws are separately pivotably attached to side support plates in a disclosed manner so that no shock forces produced during crushing are transmitted to a supporting boom. Water is sprayed on an object as it is crushed to prevent the spread of dust produced during crushing into the atmosphere.

Abstract: An excavating machine having a work implement or material excavating tool articulated on the free end of a working arm of the excavator to absorb and dissipate high stress impact loading on the working tool incurred during machine operation.

Abstract: A cleaning machine for removing slag from the interior of a reaction ladle characterized in that the ladle is supported in upright position on a turntable for angular indexing about its vertical axis after each vertical band of slag has been chipped or broken away from the ladle by the tool of a downwardly actuated pneumatic hammer. The hammer is swingably adjustably connected to the tip of a boom which has its upper end swingably adjustably connected to a boom carriage, the carriage being vertically adjustably guided between a pair of columns extending upwardly beyond the upper end of the ladle from a base rearwardly adjacent the turntable.

Abstract: 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, impact devices and excavating boom tools which all are cooperatively brought into operation to cut into material to be mined, excavated and/or tunneled.

Abstract: Apparatus including a downwardly-extending breaker bar connected for vertical movement by linkage to a base adapted to be mounted on a suitable traction unit. A hydraulic cylinder unit extends between the base and the breaker bar, and operating means is associated with the cylinder unit for selectively supplying fluid to said unit alternatively to raise and lower the breaker bar to cause it to strike a surface to be broken, such as the crust that forms on aluminum smelt in pots during the electrolytic production of aluminum.

Abstract: The masonary or refractory material employed in the lining of blast furnaces has to be demolished, torn out, reconditioned, or replaced periodically, due to wear and deterioration of such material and the subject invention involves improved equipment or apparatus with respect to removing or delining this material.

Abstract: Such a ground excavating apparatus that conducts excavation of a soft stratum by means of a bucket and employs an impact crusher for the excavation of such a hard stratum as a rock bed or the like is disclosed.Introduced in the present application is a ground excavator of such a category that comprises a housing, a bucket boom properly set in place in the said housing in a manner of being capable of traveling forward and rearward, a bucket properly fitted in place on the front end section of the said bucket boom in a manner of being capable of inclining, and an impact crushing mechanism well capable of traveling forward and rearward by virtue of a hydraulic jack housed in the said bucket boom, and employs the said bucket and the said impact crushing mechanism in an alternate manner to best suit the nature of the ground to be excavated.

Abstract: 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 wall and with a reciprocal hammer engageable with an upper portion of the wall. The miller is operated to cut or grind material off the lower portion so as to undercut the wall. Then the hammer is operated to chip or break off the upper portion of the undercut wall. Both the miller and hammer are mounted on adjustable and directable arms. The loosened rock is carried off by a scoop-transport belt arrangement.

Abstract: An excavator for excavating a tunnel is provided which has a body provided with gathering and transporting means for the materials excavated by the excavator for discharging the same. The excavator comprises a horizontally and vertically swingable boom mounted on the body and actuated by a cylinder-piston assembly interconnected between the body and the boom. A vertically tiltable excavating cutter is tiltably mounted on the forward end portion of the boom with or without a vertically swingable bracket actuated by a cylinder-piston assembly which is interposed between the cutter and the boom. An impact motor is adapted to intermittently actuating the cutter. An extensible and retractable boom actuated by a cylinder-piston assembly may be interposed between the bracket and the horizontally and vertically swingable boom.