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: The open cast mining apparatus comprises two sets of running gear between which a cutting drum is provided on a chassis. The conveyor tract is formed by an axial discharge conveyor inside the cutting drum, a vertical worm conveyor and a conveyor in the discharge jib or in the connecting bridge. The latter is supported on a loading carriage travelling parallel to a working face belt. The cutting drum is so designed that the mining machine can excavate and pick up material to be conveyed in both travelling directions.

Abstract: A pivoting transfer means for a jet of bulk material between a first cover belt conveyor and a second cover belt conveyor. The bulk material leaves the cover belt conveyor in the area of the tail pulleys and enters the receiving mouth of a second cover belt conveyor as a free jet of bulk material. Both cover belt conveyors are arranged pivotably in relation to one another around a pivot axis. The receiving mouth of the cover belt conveyor is limited by the bottom belt, the cover belt and the side walls. The jet of bulk material is deflected from the vertical into the horizontal direction of delivery within the receiving mouth. The first belt conveyor may be arranged at a higher level with the second cover belt conveyor arranged thereunder. However, the second cover belt conveyor may also be arranged at a higher level with the first cover belt conveyor arranged thereunder wherein the transfer is still from the first cover belt conveyor to the second cover belt conveyor.

Abstract: A bulk material loading and unloading facility for sea-going ships with displaceably arranged bulk material loading and unloading devices (23). Instead of a pier or a dock facility and a shore-side storage facility equipped with stackers and reloading devices and the conveyor belt units needed for them, a trough-shaped bulk material storage facility (14) is arranged on the ocean bottom (3) at a water depth that is safely navigable for sea-going ships, and rails (22) are laid on the side walls (15) of the bulk material storage facility. Loading and unloading devices (23) travel on these rails, and the loading and unloading devices (23) convey bulk material from ships (28) into the trough-shaped storage facility (14), or onto a conveyor belt unit (25) leading from this storage facility directly to a bulk material processing facility (e.g., a coal-fired power plant).

Abstract: A continuous-conveyance bulk-cargo ship unloader in which a boom is provided with an elephant trunk that can swing from one end of the boom. The trunk has a hollow cylindrical shaft which accommodates an upright conveyor. At the bottom of the elephant trunk, is a free-sweeping cargo-intake unit that is provided with a cargo pickup, a lower section of the conveyor, and a conveyor loader for transferring cargo from the pickup to the conveyor section. Squeeze rollers are mounted in horizontal frames and positioned at varied heights along the upright conveyor, and these frames have an uppermost frame attached to the shaft. The remaining ones of the frames are suspended from a frame above at three or more points. A lowermost frame is releasably fastened to the cargo-intake unit and pivots along with the cargo-intake unit about a vertical axis at the bottom of the shaft. The trunk is arranged inclined to swing in both directions.

Abstract: A cover belt conveyor for delivering bulk materials or piece goods includes, a basic belt (1) and a cover belt (2), wherein at least one of these belts (1, 2) is driven. A space for the delivery strand (4) is formed in the central area of these belts, and at least the cover belt (2) is pressed on by elastic support rollers (6). At least one of the two belts (1, 2) has, in the vicinity of its two edge areas, reinforcements (3) made in one piece with the belt, which laterally delimit the delivery strand (4). The support rollers (6) above the cover belt (2) and/or the support rollers (5) under the basic belt (1) are mounted elastically on support structures (10). In the exemplary embodiment, two short support rollers (6) each for the cover belt (2) are mounted elastically in a common bracket (8) by of rubber bearings (9). The rubber bearings (9) permit the support rollers (6 ) to move by an angle in parallel to the delivery direction and in parallel to the width of the belt.

Abstract: A continuous-conveyance bulk-cargo ship unloader. It has a pickup at the bottom of an upright screw conveyor. The screw conveyor rotates around a vertical axis and relays a more or less horizontally free-flowing stream of bulk material to a sandwiched-belt conveyor accommodated in an elephant trunk. The object of the present invention is to ensure that the sandwiched-belt conveyor will be supplied to capacity as effectively as possible and with as little friction as possible. The belts that comprise the sandwiched-belt conveyor (4 & 5) are curved at the bottom. The cylinder (10) that deflects the counterforce-application belt (9) is in approximately vertical alignment with the cylinder (12) that deflects the force-application belt (11). Both cylinders demarcate an intake-slot throat (13). The intake-slot throat intercepts the particles (8) of bulk material leaving the top of the screw conveyor (3) in a horizontal or upward-sloping trajectory.

Abstract: A method of strip mining coal or other minerals by way of continuous-operation winning equipment with a cylindrical winning tool that excavates strips with a more or less rectangular section. The rectangle is approximately as wide as the tool and no higher than half the tool's diameter as the equipment advances. The equipment is connected by a system of conveyor belts to a loader that deposits the excavated minerals onto a face conveyor. The face conveyor can be shifted more or less parallel to the direction the equipment moves in. A quadrilateral district is exposed as the equipment travels first along one short side, then along one long side, and finally along the other short side. Its tool lifts out a strip of mineral. The equipment turns at each end along an arc of approximately one eighth to one fourth of a circle to end up in a ramp surface that occurs when the tool is lowered and raised. A terraced wall is created by lifting out many strips as the equipment's travel is shifted to the side.

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: A traveling continuous conveyor for bulk materials for unloading ships and removing heaps of bulk material. A steep conveyor is provided including a carrying belt (3) and a cover belt (4) which are integrated in the conveyor device. The bulk material is cast by two casting drums (8a and 8b) into the lower gap between the carrying belt (3) and the cover belt (4), in any position of the support frame relative to a surface of the bulk material. Computer-controlled linear drives (6, 15, 17, 20, and 22) are provided, with which the position of the casting drums 8a and 8b) relative to each other and to the layer of bulk material to be removed, e.g., height adjustment to the inclination plane of the bulk material, is facilitated.

Abstract: A movable continuous bulk material conveyer, especially for unloading ships. A steep-rise conveyor is provided that comprises a conveyor belt and a cover belt. The bulk material is thrown by two casting reels into the lower gap between the conveyor belt and the cover belt. Since during the meander-like removal of material from the hold of a ship, the position of the casting reels and the steep-rise conveyor relative to one another constantly changes, the shafts of the casting reels are pivotably connected via a quadrilateral articulation with the lower guide pulleys of the steep-rise conveyor, and are controlled by hydraulic pistons from a computer in such a way that the casting reels always pick up a constant stream of bulk material and throw this material in the direction of the angle bisector of the gap of the steep-rise 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.