Abstract: In some implementations, an ejection paddle may include a paddle body having an ejection surface and a mounting surface opposite the ejection surface, and a wear region projecting from the ejection surface and extending along a top edge of the paddle body and at least a portion of a first side edge and a second side edge of the paddle body. The paddle body may be recessed relative to the wear region.

Abstract: A side cutter milling assembly is used to modify a milling machine having a frame, a milling drum housing that is removably attached to the frame, a milling drum that is mounted for rotation within the milling drum housing, and a primary drum drive assembly that is adapted to rotate the milling drum. The side cutter milling assembly includes a drum housing having a main portion and a side portion. The main portion is adapted to be installed on the frame of the milling machine in place of the milling drum housing, and the side portion is offset to one side of the milling machine. A side cutter milling drum is mounted for rotation within the side portion of the drum housing, and a side cutter drivetrain is configured and adapted to be operatively attached to the side cutter milling drum and the primary drum drive assembly.

Abstract: A system for trench and drain installation. The system utilizes an implement driven trenching assembly and a backfill pipe installation assembly. The implement driven trenching assembly digs a trench utilizing a circular trenching blade which is hydraulically operated and is mounted onto a front loader plate. The backfill pipe installation assembly uses a backfill hopper to simultaneously install drainage pipe above the trench floor and envelop the drainage pipe in backfill material to maintain the drainage pipe at a constant height above the trench floor.

Abstract: A device for excavating and transporting material, especially earth, the device comprising an excavation appliance that can be rotated about a rotational axis (y) in a rotational direction (u), and a longitudinal conveyor for transporting the excavated material. The excavation appliance comprises an impeller having a conically extending guide surface arranged around the rotational axis (y) in a rotationally symmetrical manner, and guide vanes which radially protrude from the conical guide surface and form an acute angle in relation to the rotational axis (y).

Abstract: The invention relates to a device for excavating and transporting material, especially earth, said device comprising an excavation appliance that can be rotated about a rotational axis (y) in a rotational direction (u), and a longitudinal conveyor (18) for transporting the excavated material (41). The excavation appliance comprises an impeller (12, 14) having a conically extending guide surface (20) arranged around the rotational axis (y) in a rotationally symmetrical manner, and guide vanes (22) which radially protrude from the conical guide surface (20) and form an acute angle in relation to the rotational axis (y).

Abstract: A material gathering apparatus with a bucket; a motor having a shaft; and a plurality of blades; in which the hydraulic motor is fixed below the bucket; and the plurality of blades are fixed within the bucket and are rotatable clockwise or counterclockwise around the shaft.

Abstract: It is an object of the present invention to provide a more efficient and economically superior earth auger head in which a percussive excavation mechanism part (down-the-hole hammer) is incorporated in order to break up portions that are unsuitable for rotary excavation by the auger, and an excavation method using this auger head. The auger head comprises a rotary excavation mechanism part (1) in which a spiral vane (12) used for earth discharge is provided to the circumferential surface of a rotary tubular part (11), and in which an excavating bit (13) whose outer circumferential side protrudes further downward than the central side is provided to the lower end of this spiral vane; and further comprises a pneumatic percussive excavation mechanism part (2) that is installed inside the rotary tubular part and is disposed so that a percussive body (23) is accommodated in a position that is higher than the lower tip end of the excavating bit.

Abstract: An apparatus for digging a trench including a cutter device for cutting through a ground surface and a guide with a loading end located rearwardly of the cutting device and adapted for guiding earth from the loading end to an off loading end as the apparatus moves in a forward direction.

Abstract: The present invention relates to a machine for digging into the lower layers of the ground, wherein said machine comprises the following members: a base frame (1), a ground excavator (2) and a driving chain-type working organ (3) that is suspended from the frame (1) by a device (4) so as to be capable of forced rotation about two geometrical axes (17, 18). During operation of the machine, the axis (17) is perpendicular to the support surface (5) of the drive section (6) of the frame (1), while the axis (18 ) is parallel to the longitudinal axis (a—a) of said drive section (6). During operation, the rotation of the working organ (3) about the two axes (17, 18) makes it possible to dig excavations with a bottom that is horizontal or has a predetermined lateral inclination while maintaining an important width, to form sloped excavations or to dig excavations having various profiles.

Abstract: A rotating drive wheel assembly for steering and maneuvering a dredging apparatus includes a carrier wheel and an orientation wheel connected to opposite ends of a pivotation member. A plurality of spade devices are connected to the wheels, each including a blade portion pivotally coupled to a spoke plate of the carrier wheel, and an arm portion pivotally coupled at opposite ends to the outer portion of the carrier wheel and another carrier wheel spoke plate member. The construction of the present drive wheel assembly allows the spade devices to remain in a substantially vertical orientation when the carrier wheel is rotated about its axis of rotation.

Abstract: The present invention discloses a method and apparatus for excavating material from a mining or reclamation operation, and is generally considered useful in open cast mining operations. The apparatus has a first conveyor and a second conveyor attached to a chassis. The first conveyor is fitted with a material remover such as a excavator bucket on a first end. Material discharges from the first conveyor onto a second conveyor which is generally longitudinally aligned with the first conveyor and has a material receiving point located elevationally below the discharge point of the first conveyor.

Abstract: A bucket wheel excavator has a scraper blade mounted on the bogie and whose height is independent of the raising and lowering of the bucket wheel to maintain a level track for the crawler bogie. The scraper blade can be tilted about a horizontal axis by at least one hydraulic cylinder.

Abstract: A silt removal apparatus is provided for removing silt from under a body of water. The silt removing apparatus includes a silt removing wheel rotatably mounted on a floatation arrangement. The silt removing wheel has a plurality of silt retaining chambers defined by a plurality of vanes. Once the silt has been retained in the silt retaining chambers a shield mechanism shields the silt from the water as the silt retaining chambers rotates through the body of water. Once the respective silt retaining chambers of the silt removing wheel reaches an upper most position, an ejector mechanism aids in the removal of the silt from the silt retaining chambers. A conveyor arrangement transports the silt to a storage site. In the event an object is wedged between the shield mechanism and the silt removing wheel, a release mechanism trips and the silt removing wheel is stopped in order to remove the object. The subject silt removing apparatus is an effective apparatus to remove silt from under a body of water.

Abstract: An overload protector mechanism provides protection for an excavating wheel shield mechanism so that if a large foreign object becomes lodged between the excavating wheel and a portion of the shield arrangement the shield mechanism can move out of the way and the wheel may be stopped. The overload protector mechanism includes a release mechanism connected between the shield mechanism and a wheel frame. The release mechanism includes a linkage arrangement having first and second links pivotally connected to one another and releasably biased to a set first position. Once the release mechanism trips, the shield mechanism pivots away from the wheel in order to prevent damage to the shield mechanism or to the excavating wheel and allow the wheel to be stopped and the large object removed.

Abstract: A level boom is provided for a piece of strip mining equipment traveling on caterpillar-type chassis, which piece of equipment is temporarily moved on oblique roadways during operation. The position of the boom in relation to the skeletal structure is corrected with simple means. A piece of strip mining equipment with a boom, which can be lifted and lowered and at the free end of which, e.g., a bucket wheel for picking up a load is arranged, is connected to the substructure of the piece of equipment in a pivot axis. The lifting movement is brought about by a lifting cylinder. A tilting support, which carries the boom, is arranged in the pivot axis for lifting and lowering the boom. A bolt connection is provided on one side in the pivot axis for leveling between the tilting support and the boom, and the actuating element for leveling as well as a step bearing for absorbing lateral forces which the actuating element is unable to absorb, are located on the other side.

Abstract: An excavating machine is provided having a cleaning member for cleaning spoil out of an earth cutting device having a digging wheel assembly. The digging wheel assembly has a rim structure and a series of circumferentially spaced peripherally extended bucket members, the rim structure and the bucket members in combination having an interior profile. The cleaning member has a cleaning face corresponding substantially in size and shape to the interior profile of the rim structure and the bucket member in order to remove any spoil which has accumulated in the rim structure and the bucket member when the rim structure and the bucket member come into contact with the cleaning face of the cleaning member.

Abstract: A bucket-wheel excavator has its bucket-wheel conveyor stopped when a truck is fully loaded so that a new truck can be brought into position, the continuously-operating bucket wheel filling the bucket-wheel chute with a first store of the material. After an empty pass of the dumping conveyor, the bucket-wheel conveyor is driven at a creeping speed and a second store of the material is formed in the receiving chute of the dumping conveyor which is turned onto operate at creeping speed when the material reaches the upper belt drum of the bucket-wheel conveyor belt. Once the empty truck is in position, the belts are accelerated to maximum speed.

Abstract: An excavating machine is provided having an adjustable grooving device for forming a groove in the bottom of a trench. The excavating machine has a power unit, a supporting frame assembly operably attached to the power unit, an earth cutting device to form a trench behind the excavating machine, and a shoe assembly operably attached to the supporting frame assembly to prevent a cave-in of the sidewalls of the trench. The adjustable grooving device is attached to the bottom of and extends below the shoe assembly and is comprised by two arcuate groove plates which pivot relative to one another to form an arc of varying radius. A hand crank is operably attached to a linear actuator for pivoting the arcuate groove plates relative to one another to adjust the radius of the groove to be formed.

Abstract: The operative members in open pit mining apparatus, designed as strata cutting and loading machines are exposed to high wear and tear in practical operation. The cutter tools (3) are so designed that those picks (5) which are cutting are in their operating position while the picks (5) for the other working direction are swivelled out of the cutting orbit. They must be robust and always functional. Pick holders armed with picks (5) are therefore pivotally disposed on hinges on both sides in the direction of rotation on the cutter bars (1) arranged on the circumference of the cutting drum. Two pick holders on opposite sides, form a pair. These are interconnected in articulated manner by a bar of such length that one pick (5) can perform its winning action while the other pick (5) is angularly displaced out of the groove being cut. Due to the excavating resistance, the cutter tools (3a and 3b) automatically assume their operating position. A two-way latch is provided for fixation in either operating position.

Abstract: An apparatus for removing soil and other debris from around buried objects. The apparatus comprises a movable frame which supports plurality of rotatable and independently mounted brushes which are used to gently sweep across the soil to remove soil and other debris from the covered objects. The soil is then transferred to a collection box within the movable frame for subsequent removal. The frame is capable of horizontal, vertical and rotational movement.

Abstract: An endless driven sprocket chain (10) includes inner links (24) which couple to outer links (26) through a resilient bushing (50). A pin (42) having a shaft (44) with a hexagonal cross sectional shape mates with a corresponding hole in outer link plates (32, 34). The shaft (44) also mates with a hexagonal cross sectional shaped hole in the bushing (50) through an metallic insert (56). The bushing is pressed into a metallic sleeve (58) which in turn is press fit into inner link plates (28, 30) at holes (36) therein. The hexagonal alignment of the holes (40) in the outer link plates (32, 34) with the corresponding hole (54) in bushing 50 defines a resting position where the inner links (24) reside at an oblique angle to the outer links (26). When the inner links (24) form a substantially straight line with the outer links (26) the bushing is deformed and imposes a force of the links (24, 26) that urges the links (24, 26) toward the resting position.

Abstract: A disc-shaped rotary cutter for continuous excavation of hard mineral rock layers according to the invention includes a supporting element having a plurality of end faces and a plurality of cutting elements formed on a circumference of the supporting element and the plurality of end faces. According to the invention, the rotary cutter provides a cylindrical compressive strength of equal to or greater than 20 MPa.

Abstract: A self propelled apparatus for digging a shallow trench along one side of a roadway is disclosed, and which is useful as part of a roadway widening operation. The apparatus comprises a cutter drum mounted to one side of the chassis of the apparatus, and a conveyor belt is mounted to the same side of the chassis with an inlet end positioned immediately adjacent the cutter drum and an elevated outlet end positioned beyond the forward end of the chassis. An enclosure surrounds the cutter drum so that the drum may be rotated in a downwardly cutting direction, and the loosened soil or other material may be lifted and guided around the drum and deposited onto the conveyor. The cutter drum includes one or more extensions which may be coaxially mounted thereto, so as to permit the width of the cutter drum and thus the width of the resulting trench to be selectively varied.

Abstract: A continuous excavating and loading machine having a front mounted rotary digging element divided into sections to allow cantilevered support, digs a width greater than that of any other part of the machine so that the machine may advance on the surface it has cut. The digging element is driven by digging chains which also break up material in their path so that the full digging face is excavated. Excavated material is discharged outwardly from the digging element by both centrifugal force and gravity after rotation past top center. The excavated material falls onto a conveyor system to be elevated and transported to the rear of the machine for transfer to appropriate carriers. A moldboard blade trims surface irregularities and pushes passed material forward into the bucket wheel. A movable skid plate, held against the cut surface by a constant force, supports digging torque reaction loads and damping is provided for shock conditions.

Abstract: A continual digging, transporting, and loading accessory can handle material. The accessory is adapted for exchangeable attachment on earth or material moving equipment. The accessory includes a digger outwardly mounted on the earth or material moving equipment for digging the material. Also included is a transporter having an inward unloading end mounted on the earth or material moving equipment and an outward onloading end mounted adjacent to the digger for receiving and transporting the material dug by the digger. The transporter has a carrier for moving between the onloading end and the unloading end to carry the material. The accessory includes a loader having a loading end positioned to receive and transport away from the vehicle the material discharged from the unloading end of the transporter.

Abstract: A continuous-operation extraction apparatus for strip mining that is self propelled on continuous track treads. A cylindrically-shaped cutting extractor has cutting tools arranged on its peripheral surface. Recesses are provided in this peripheral surface for the transfer of extracted material through a chute to a first conveyor that is located axially within the cylinder of the cutting extractor. A second conveyor having loading carts connects with the first conveyor and receives the loosened material from the first conveyor. The first conveyor has an inside section which emerges from a front side of the cylinder and merges outside into a sloping conveyance section which extends vertically to substantially an upper edge of a chassis. An overhead ascending section is connected to the inside section and terminates in a transfer region where the extracted material is transferred to the second conveyor.

Abstract: A continuous track-mounted, self-propelled continuously operating open-cast mining machine having a drum-shaped mining device with cutting tools arranged around the circumference of the drum. The cutting drum is equipped with cutting teeth which can cut in both directions and the mined material is guided into the interior of the cutting drum, with the cutter bars being arranged in a substantially axial pattern on the circumference of the drum. The teeth holders are arranged on the cutter bars and carry teeth and the teeth holders with the teeth are pivotable about an axis in such a way that the teeth pointing in the directin of rotation of the drum pivot automatically into the cutting position as they engage in the material to be extracted, while the teeth pointing in the opposite direction are simultaneously pivoted out of the clearance angle zone of the teeth doing the actual cutting.

Abstract: This invention pertains to method and apparatus for accurate control of the cutting depth and grade for mobile excavating system excavators having a continuous bucket excavating system mounted at the leading end of a structural main frame. Such excavators have a rubber tire or crawler track undercarriage and dig while advancing on the freshly cut grade.

Abstract: A paddle wheel, bulk-goods pick-up and moving device is disclosed, which picks up bulk goods from a storage container and deposits the same into the paddle wheel's interior. The device is provided with a motor-driven driving gear provided with a coaxially extending drive shaft immediately adjacent the driving gear. The shaft is provided with external serrations, and the interior central bore of the paddle wheel is provided with complementary internal serrations which matingly engage with the serrations of the drive shaft. The drive shaft, which causes the paddle wheel to rotate, is provided on the end opposite to the driving gear, with a connecting shaft portion which passes through the central bore of the paddle wheel. At the free end of the connecting shaft, a fastening mechanism is provided to secure the paddle wheel in close-coupled relation to the driving mechanism. A torque support connects the driving gear to the main structure.

Abstract: A method and apparatus for bench mining employs a rotating wheel excavator with excavator wheel positioned outwardly to one side of a tractor unit for the excavator so that the tractor unit draws the excavation wheel along a bench line or cut line between different layers of the bench mine. The cutting wheel can either be moved to opposite sides of the tractor unit or a second wheel can be positioned at the other side so that the excavator can operate in both directions of movement.

Abstract: This invention relates to a front-loading cutting device for cutting up damaged road surfaces, having a self-driving chassis, a pair of front wheels and a pair of rear wheels, a cutting cylinder which is height-adjustable in relation to the chassis and a loading belt arranged at the front end, in which the cutting cylinder is arranged at the rear of the chassis and a transport belt is provided for the cut-up material below the chassis between the cutting cylinder and the loading belt.

Abstract: The present invention provides a crawler unit having a superstructure and a substructure and an excavating device for recovering bulk material. The excavating device has bearing regions and drive regions and also has vertically arranged shearing drums for cutting free the bearing and drive regions. The shearing drums have upper ends which are inclined obliquely forward.

Abstract: An excavating bucket wheel has a plurality of radially outwardly open bucket chambers disposed in a circular array. During rotation of the bucket wheel each chamber cyclically assumes a material receiving position and a material dumping position. Each bucket chamber is defined by a cutting plate supported at the wheel periphery and having a trailing edge as viewed in the direction of wheel rotation, two axially spaced, parallel side walls and a rear wall extending axially between the side walls. An outer edge of the rear wall is situated adjacent the cutting plate. Each bucket chamber is further defined by a bottom wall extending axially between the side walls and being supported for pivotal motion about an axis oriented parallel to the rotary axis of the bucket wheel and situated adjacent the outer wheel periphery. The bottom wall has a first pivotal position for receiving material and a second pivotal position for dumping material.

Abstract: The invention comprises a mobile backfilling machine wherein raw materials located adjacent an excavated trench are picked up, graded and delivered to the open trench in an order of size grading from finest to coarsest, thereby providing a fine material padding for a product which has been placed into the trench. The machine may also be used to place a warning ribbon into the trench at a point above the padding.

Abstract: A ditch cleaning machine is for a longitudinally extending ditch having in a vertical trapezoidal transverse cross-section a greater width at the top than at the bottom and having slanting side walls. The machine has a steerable main frame ground-supported and engine-driven to advance along the ditch. The two-wheel main frame is laterally stabilized by adjustable outrigger wheels. A pair of cleaning rotors is pivoted to the main frame and to the forward end of a longitudinal elevator trough so as to engage the ditch side walls. The elevator trough rests on a transverse roller on the main frame, and the trough and the cleaning rotors are jackknifed about a transverse axis by a hydraulic jack connected to the elevator trough and to the main frame. Conveyor flights move debris from the cleaning rotors at the ditch bottom along the elevator trough for discharge onto a transverse conveyor extendable to and discharging from either side of the main frame.

Abstract: An excavating apparatus for breaking and removing material away from an upright face of material is disclosed. The apparatus includes a rotary cutting head mounted between the fore ends of a pair of boom arms. The boom arms are pivotally mounted relative to the front end of a vehicular portion of the apparatus. A shroud partially surrounds the cutting head for confining material cut from the face. The shroud includes an edge shoe portion for engaging the face and is pivotally mounted at the fore-end of the boom arms. The shroud is adapted for selective rearward pivotal movement as the boom arms are swung upwardly for maintaining the edge shoe portion against the face. A position adjustable, pivotal breaker bar is provided along the cutting head for selectively sizing material being removed from the upright face being excavated. In the preferred embodiment, the breaker bar is pivotally mounted relative to the shroud.

Abstract: Excavating apparatus and methods for breaking and removing material away from an upright face of material are disclosed. The apparatus employs a rotary cutter for dislodging material from the face. A collector pan extends transversely across the front end of the apparatus. The cutter is elevationally movable relative to the collector pan in both longitudinal and elevational directions above and below the collector pan front edge, and btween positions located longitudinally outward and rearward of the collector pan front transverse edge. A combination grading and collecting device is mounted at an elevational positon below the collector pan front transverse edge. It functions to both gather material dislodged by the cutter and to form surfaces over which the apparatus travels.

Abstract: The two ends of the luffable and swivelable arms of the gantry of an overburden excavator each have a horizontal bolt for a frame of the drive, on the axis of rotation or drive shaft of which is mounted a rotary cutter in the form of a cutter drum. The rotary cutters are disposed on both sides of a receiving conveyor. The axes of rotation of the shafts rotating the rotary cutters are oriented approximately parallel to the plane of symmetry (longitudinal axis) of the receiving conveyor belt. The angle of the rotary cutter axis can be adjusted in relation to the plane of the roadway by the length adjuster in the form of a hydraulic or pneumatic cylinder, which is located between a bearing lug of the arm and a bearing lug of the frame. The rotary cutters transport the material via transverse conveyors to the converyor belt.

Abstract: An excavating apparatus for breaking and removing material away from an upright face of material is disclosed. The apparatus includes a rotary cutting head mounted between the fore ends of a pair of boom arms. The boom arms are pivotally mounted relative to the front end of a vehicular portion of the apparatus. A shroud partially surrounds the cutting head for confining material cut from the face. The shroud includes an edge shoe portion for engaging the face and is pivotally mounted at the fore-end of the boom arms. The shroud is adapted for selective rearward pivotal movement as the boom arms are swung upwardly for maintaining the edge shoe portion against the face.

Abstract: A digging machine for planing a road. The machine has a massive main frame supported by large endless tracks. An elongated digging member has spaced shafts located at the opposed ends thereof. One of the shafts pivotally supports the digging member from the rear end of the main frame, while the other shaft rotatably supports a digging head. The digging head is rotated by spaced, endless chains that are driven by sprockets located on the pivot shaft and thereby rotates sprockets located on the other shaft. Cutter plates are supported by the spaced chains and form an endless cutter member. Opposed drums are mounted on opposed marginal ends of the driven shaft and are rotated by the driven sprockets. The drum surface has flights formed thereon. Digging teeth are mounted on the outer periphery of the flights and cutter plates. The digging head can be made as wide as the vehicle and thereby excavates adjacent to a vertical wall.

Abstract: A mobile bucket mechanism for collection and conveyance of a bulk material which includes buckets carried by chains over generally vertically arranged sheaves, a support structure for the sheaves which drives the chains to move the buckets in a path to collect bulk material located at a lower end of the path. A feeding device is driven by the support structure to cut into the bulk material and feed the bulk material to the buckets. The feeding device includes a stationary, jacket-like cylindrical body surrounding the path of the buckets and the lower portion of the supporting structure. The cylindrical body has an opening adjacent a portion of the path along which the buckets are carried upward by the chains. A cutting head surrounds the cylindrical body and has essentially radially oriented blades rotatable with respect to the cylindrical body so as to supply the bulk material to the opening.

Abstract: A trench digger for digging and maintaining drainage ditches along railway road beds. The trench digger includes a compact rotary drum cutting head mounted on a boom that can be swung about a boom base pivot axis to position the cutting head to either side of a railroad mounted support carriage. A first conveyor carries loosened composite from the cutting head to a first conveyor discharge point rearwardly of the boom base pivot axis. A second conveyor, pivotally mounted to the boom base at a second conveyor pivot axis oriented rearwardly of the boom base pivot axis, receives the loosened composite from the first conveyor and conveys the loosened composite to a second conveyor discharge point remote from the boom base.

Abstract: The excavator for mining minerals, particularly for continuous strip mining of minerals, comprises a track drive, a digging unit with at least one digging roller and a connected conveyor for raw ore formed in the mining operation. The digging roller has a roller core and at least one helical digging and delivery flight. A delivery mechanism is mounted between the conveyor and the digging roller. The delivery mechanism comprises a breaking wedge and a delivery frame with a delivery opening connected to the breaking wedge. The breaking wedge extends from the underside of the delivery frame to the ground, and of course with a breaking surface thereon substantially tangent to the helical digging and delivery flight. There is a gap A between the breaking wedge and the helical digging and delivery flight of thread height H, and the sum of the gap A and the thread height H is less than the width B and the height C of the delivery opening. The conveyor is mounted on the underside of the delivery frame.

Abstract: A cutting head for a strip mining machine is provided that has a unique arrangement of cutting arms for prolonging the lift of the cutting head, which provides for efficient collection of disturbed mineral composite loosened by the cutting arms, and which has improved, replaceable cutting teeth. The improved cutting head comprises a rotatable axle member and a plurality of radially and longitudinally spaced cutting arms projecting generally radially outwardly from the axle member. A detachable cutting tooth is received within a receptacle at the outermost end of each cutting arm in a resilient force fit, and is retained within the receptacle by removable spiral pins. Flighting is provided for urging disturbed composite towards the middle of the cutting head, and the cutting arms in the middle of the cutting head are provided with impelling plates for urging the composite radially outwardly from the cutting head.

Abstract: A rotary wheel excavator having scoops with impact cutters only at the two front corners of the cutting edge of each scoop. Structure is provided for vibrating each impact cutter during a predetermined portion of the rotation of the wheel. The left and right hand impact cutters on each scoop are independently controlled, depending on the direction of swing of the excavator boom. The operation of the impact cutters is preferably under the control of a hydraulic system.

Abstract: This disclosure relates to a continuous excavator for use in open-pit mining, which comprises a self-propelled main frame, a rotating cutter drum supported by pivotal booms and having cutter bits on its outer periphery for excavating the ground material, and a scraper supported behind a lower portion of said drum which collects earth/rock material dug by the cutter bits. An upward conveyor is supported on the frame and slopes upwardly to convey up the earth/rock material from the scraper. Another pivotable conveyor is supported at one end on the frame below the upper end of the upward conveyor, and it is pivotable both horizontally and vertically in order to convey the earth/rock material from the upward conveyor out of the excavator to a desired location.

Abstract: Apparatus for removing bulk material from a dump comprises a horizontal scooping tube, which is mounted for rotation about its axis and provided with a plurality of buckets, which are distributed around the periphery and over the length of the scooping tube and protrude into the interior of the scooping tube through entrance openings formed in the wall of the scooping tube, and a conveyor, which extends within the scooping tube and serves to receive bulk material which has been dropped through the entrance openings by the buckets. In order to provide good conditions for the removal of material and to provide a simplified structure, the buckets are secured to annular collars, which are disposed at the entrance openings in the tube wall and radially outwardly protrude from the tube wall, and the buckets protrude at least with their backs through the collars into the interior of the scooping tube.

Abstract: A reclaiming wheel which has a pair of annular members mounted on an axle. A flexible belt is fitted between the peripheries of the annular members around part of their circumference. Scoops are attached to one or both of the annular members, projecting both axially and radially. As the wheel is rotated about the axle the scoops direct material to be reclaimed through openings in the annular member to which they are attached into the interior of the wheel. The material is held against the belt by centrifugal force and moves with the belt and wheel until it reaches the point at which the belt separates from the wheel. The material is then thrown from the wheel onto a conveyor.

Abstract: Instead of teeth or similar cutting or loosening means, oscillating nozzles are arranged on the outer backs and the outer side walls of the buckets of the bucketwheel of a bucketwheel excavator, the nozzles being capable of being supplied with liquid, in particular water, at high pressure. These nozzles enable the excavator to strip or mine deposits of high hardness and strength as well as highly abrasive deposits with reduced outage periods and reduced force required for digging as well as lower capital costs and operating costs. In addition to the oscillating nozzles, fixed nozzles may additionally be provided which produce cuts in the material to be excavated whereby the formation of large lumps is prevented.

Abstract: Apparatus designed to extract and mix any muddy material from basins or deep morasses with steeply sloping banks and to feed such material in a relatively homogenous form by means of a pressurized propulsion pump integrated into the equipment to a remote treatment station. As seen from downstream to upstream, the equipment comprises a pump for propelling the extracted materials to a remote treatment station by means of a channel, an elevator to pick up the materials in an input bucket and dump them into a feed hopper of the pump, the input bucket bearing laterally two extraction screws and on its forward part an extracting apparatus capable of operating alone or jointly with the extraction screws.