Abstract: Apparatus for use in conveying coal from the conveyor of a continuous miner to a spaced floor conveyor comprising first, second and third cooperating elongated scraper conveyor assemblies each having a coal receiving end and a coal discharging end. The receiving end of said first conveying assembly has a connection with the miner providing for limited tilting movement and for generally horizontal swinging movement with respect thereto in a position to receive the coal discharging from the conveyor of the miner. First and second mounting members extend in cantilever fashion from the receiving end of the second conveyor assembly and the receiving end of the third conveyor assembly respectively. First and second crawler units are disposed below the first and second mounting members respectively.

Abstract: A continuous mining machine comprising a cutter assembly including a cutter frame, a pair of oppositely pitched independently vertically movable auger cutters having their axes of rotation disposed generally parallel with respect to one another, a mobile assembly disposed rearwardly of the cutter assembly and including a mobile frame having a pair of parallel power driven endless track units mounted thereon for independent pivotal movement of each unit about a common generally transversely extending horizontal axis disposed adjacent to the forward portion of the track units, a yoke assembly between the mobile assembly and the cutter assembly including a yoke frame pivotally interconnected with the mobile frame for pivotal movement about an axis generally parallel with the common pivotal axis of the track units and pivotally interconnected with the cutter frame for pivotal movement about a generally upright axis extending generally perpendicularly to the pivotal axis of the yoke frame with the mobile frame, an

Abstract: In a mining machine having a power driven cutter including metallic helical blade means having cutting bit means spaced along the exterior periphery thereof, the improvement which comprises the helical blade means having fixedly secured in surface-to-surface contact therewith energy absorbing layer means for dampening vibrations set up in the metal of the helical blade means when the cutter is in power operated cutting relation so as to materially reduce the operating noise level of the cutter within the mine.

Abstract: A system for separating solids from a slurry containing liquids and solids including an elongated plate having spaced apart openings therethrough, a pair of superposed endless screens supported for sliding movement on the upper surface of the plate. A pond of the slurry is formed over a portion of the run of the screens. A vacuum chamber is provided on the side of the plate opposite the side supporting the screens to draw liquid from the pond through the screens. A roll nip is provided to engage the screens to apply pressure to material on the screens at the nip. Various screen constructions and operating parameters are also disclosed.

Abstract: An improved advancing mechanism for a dual auger continuous miner of the type adapted to be advanced by a pair of anchoring jack assemblies, a pair of cables extending from the anchoring jack assemblies to a pair of winch mechanisms on the sides of the frame. The mechanism includes a mounting arm mounted on each side of the frame for movement about a vertical axis, a telescoping structure extending longitudinally between each mounting arm and the associated anchoring jack assembly and hydraulic piston and cylinder units for effecting the pivotal movement of each arm and the telescoping movement of each telescoping structure.

Abstract: A continuous mining machine comprising a central longitudinally extending conveyor assembly, a pair of cutting and conveying mechanisms mounted on the forward end of the central conveyor assembly for movement between a normal operating position wherein the cutting and conveying mechanisms are in alignment and extend laterally outwardly with respect to the forward receiving end of the conveyor assembly and a transporting position wherein the cutting and conveying mechanisms are in parallel relation alongside the central portion of the conveyor assembly, the cutting and conveying mechanisms having vertically movable endless track assemblies operable to move the continuous mining machine when the cutting and conveying mechanisms are in the transporting position, and a pair of mine floor-to-roof anchoring canopy units for (1) advancing the continuous mining machine so that the cutting and conveying mechanisms are moved inwardly of the working face, (2) facilitating the installation of mine roof bolts at positions

Abstract: An anti-abrasive, flame-resistant, and noise-suppressant laminate suitable for use with underground scraper conveyors or the like comprising two outer layers of ferrous material having an inner layer of styrene butadiene rubber material vulcanized therebetween. The styrene butadiene rubber material has a durometer of the order of 59, a flame spread index of less than 25 according to ASTM-E162 and a thickness of the order of 1/4 inch. One of the outer layers is of abrasive resistant steel and has a thickness of the order of 1/4 inch. The other outer layer is of 1020 steel and has a thickness of 16 gage.

Abstract: A method utilizing the phenomenon of plug flow for removing solids from liquid. Liquid with suspended solids, such as paper mill effluent, is passed through a conduit under conditions of plug flow. This produces a moving plug containing the suspended particles, with the liquid along the wall of the conduit being relatively free of suspended particles. The wall is made liquid permeable, and liquid is forced through the wall as the liquid moves along the conduit. Preferably the wall is made relatively impermeable to a substantial portion of the suspended solids to assure that relatively pure liquid flows through the wall, leaving the solids concentrated in the remaining liquid flowing through the conduit. Liquid with concentrated solids is recirculated.