Abstract: A conveying trough for use in a coal mining seam which has a coal winning sidewall with a waste sidewall, disposed opposite to the coal winning sidewall, which comprises, a guide plate adapted to be secured to the waste sidewall and a base frame adapted to be adjacent the winning sidewall. A gantry-like cutter spans the space between the waste side wall and the winning sidewall and has one side with a track wheel with a running surface associated with the guide plate. An angle bar has a first substantially horizontal fixing leg portion secured to the base frame and also has an upright guide leg portion affixed to the fixing leg portion. The tracking bar is carried by the cutter and has an edge in cooperative engagement with the guide leg portion. The tracking bar and the guide leg portions have substantially vertical slide surfaces which cooperatively interengage during the running of the cutter.

Abstract: A conveying trough for chain scraper conveyors, comprises a plurality of trough sections for the conveyance of the material each having side walls including a guide plate which has a portion adjacent an end thereof with a recess forming a pocket on the interior side of the guide plate. The guide plate has at least one projection extending into the pocket and a link plate is disposed in the pockets of adjacent plates and has eyelets into which the respective projections extend with a clearance between the guide plates and the link plate. A locking plate is arranged to overlie the link plate. Each guide plate is provided with a guide rail at its top which forms a surface defining a trackway for a wheel of a cutter or similar machine which runs over the conveying trough. The cutter has a hold-down member which engages beneath an inwardly extending claw portion of the guide rail and it has a slide surface which engages with a similar slide surface on the underside of the claw portion.

Abstract: A conveyor chute for chain scraper conveyors, comprises, a plurality of chute sections joined together with a clearance therebetween for free motion. Each of the sections includes a guide plank having a reinforcing plate portion adjacent a respective end thereof and a pin extending outwardly from the reinforcing section. A common connecting plate interconnects the separate sections and it has spaced apart eye openings therethrough into which a respective pin segment extends. The plates have a web between adjacent pins of adjacent sections and the eye openings and the segments are spaced to provide the clearance therebetween. Each guide plank comprises an auger thread plank for coal which is made of a box-like section construction. Each box-like section has an exterior wall covering the pin segments and an inner wall spaced from the exterior wall forming a locking pocket therewith, which receives the locking or connecting plate.

Abstract: A conveyor chute for chain scraper conveyors which are adapted to overlie a floor of a mining seam, comprises, at least one chute section which has laterally spaced apart upright sidewalls located on a filling and forehead side of the conveyor. The bottom plate extends between the sidewalls and divides the chute section into upper and lower stringers. A forehead side of the chute has a chute foot which has a lower portion which extends laterally outwardly from its wall and has a male hinge portion on its inside face which engages with a female hinge portion which is attached to a baseplate which extends between the two sidewalls and rests on the mining seam floor. The opposite side of the baseplate may be fastened to the opposite sidewall either directly by use of an extension plate and fastening elements or with an intermediate shim therebetween.

Abstract: A single chain scraper conveyor comprises a trough having first and second straight sections disposed at angles to each other and an intermediate curved section between and joining the first and second straight sections. The intermediate section has an inner curved edge and an outer curved edge, and the trough has an opening along the inner curved edge. An endless chain is centered in and movable along the trough, and it carries a plurality of flights which extend across the chain at spaced locations along its length. Each flight has an inner end which moves around the inner curved edge of the intermediate curved section during operation. A deflector wheel is rotatably mounted adjacent the intermediate section, and it includes a periphery that is parallel to the inner edge, on which a plurality of heads are pivotally mounted at spaced circumferential locations. The heads include surfaces having V-shaped grooves or receiving recesses into which the inner end of each flight may engage.

Abstract: A scraper chain conveyor assembly comprises a plurality of trough sections arranged in end-to-end relationship and a bracket side section extending along each trough section. Each bracket side section includes a hollowed sectional part and a mining machine embraces the sectional part and has a sprocket wheel which engages through an elongated slot defined in the sectional part. A round link chain extends through the hollowed sectional part and has respective crossing links held by the sectional part in link-crossing orientation so that one of the crossing links is oriented for engagement by the sprocket wheel engaging through the slot.

Abstract: A hauling system for underground operations for use in an excavation between a longwall having a mining face and a drift comprises a longwall conveyor which is adapted to be positioned along the longwall and a drift conveyor adapted to be positioned along the drift. A cycloid is positioned between the drift and the longwall conveyors and provides a connection transfer therebetween. A plurality of plane guiding profiles are disposed along the long wall and they provide means for the passage of chains of a chain drive which includes a drive motor and transmission and sprocket located on the side of the drift conveyor.

Abstract: A coal plane for use against a coal face, comprises a plane body which has a plane guide. A plane chain is arranged in the plane guide and has chain ends engaged on respective sides of the plane body. A bit support is mounted in the plane body for pivotal movement about a vertical axis in a working direction toward the coal face. A horizontal control shaft, mounted orthogonally to the longitudinal direction of the plane chain on the plane body, is provided, to actuate the bit support. A turning head is mounted on a control shaft for rotation therewith and it operates between two spaced apart slide plates. A lever arm is secured to the control shaft for rotation therewith and a control chain mounted for reciprocating motion is engaged with the lever arm and is connected to the ends of the plane chain.

Abstract: A horizontal-type single toggle jaw breaker for crushing medium to large size materials, for example, coal and other minerals, which are advanced on a conveyor having an upper reach and a lower reach, comprises a fixed jaw mounted over the upper strand with a pivotal jaw mounted for pivotal movement alongside the fixed jaw pivoting about a substantially vertical axis. A toggle joint has a drive portion connected to the pivotal jaw which includes a drive motor and a transmission with an output shaft which is connected to the toggle joint through an eccentric. In addition, a flywheel is disposed between the upper and lower reaches of the conveyor and it includes a flywheel shaft having a gear thereon which is driven from an intermediate gear driven off the output shaft of the transmission.

Abstract: A progressive timbering device for use in excavation and mines, comprises a ridge plate adapted to be positioned against the roof or face of the excavation, and a sill disposed beneath the ridge plate adapted to be positioned along the floor. A fluid-pressure operated pressing cylinder and piston combination is disposed between the sill and the ridge plate. Either the ridge plate or the sill, or both, are provided with an endless track guideway extending around the top and bottom and both ends of the associated part, with an endless track engaged in the trackway and projecting outwardly of the associated one of the sills and the ridge plates into engagement with the face of the excavation.

Abstract: A double chain conveyor which is adapted to run in a conveyor trough which has a trough bottom in which it is guided, comprises first and second chains having interconnected horizontally and vertically arranged links which are adapted to run in the conveyor trough in spaced parallel relationship. The construction includes transversely extending drivers engaged over the chain link which have a central part with seating lugs which extend downwardly into engagement with the trough bottom. The driver also includes side portions on each side including a core which engages over the top and around the outer end of each horizontally disposed chain link to which it is connected. In addition, it has a cutout portion for accommodating the upper part of the vertical chain link which is connected to each side of the horizontal chain link to which it is connected.

Abstract: A crusher for breaking up large size pieces of material, particularly for breaking up coal, comprises a housing with a crank therein which is pivotally mounted adjacent one end in said housing and is connected to means for oscillating the crank upwardly and downwardly in respect to a crusher plate. The crank carries a bracket portion which provides a rotatable mounting for the crusher roller which includes a shaft portion having a plurality of arms extending radially outwardly therefrom which have forward faces which carry striking tools. The arms provide means for conducting a liquid through the arms to a discharge nozzle which is oriented to spray in a direction opposite to the rotation direction behind the striking tools.

Abstract: A conveyor for conveying fine materials, particularly of fine coals in underground operations, comprises a first conveyor unit which includes a horizontal section which is movable in a transport direction through a path intercepting a chain scraper conveyor which includes a lower section which moves over the horizontal section of the first conveyor unit and delivers the fines thereto which are moved to a vertical section of the first conveyor unit. The vertical section moves upwardly with the fine materials and discharges the materials downwardly on to the upper section of the chain scraper conveyor. The first conveyor unit includes a housing which forms a support for the chain scraper conveyors, and it is provided with an opening overlying the horizontal section so that the lower section of the chain scraper conveyor may deposit the fine materials moved thereby into the horizontal conveyor.

Abstract: A single-roll crusher has a crushing roll formed with a plurality of hammers and disposed above an anvil or breaker plate which can form the bottom of a trough through which a conveyor passes to carry the material to be crushed into the breaker and the crushed product therefrom. The height of the central portion of the roll above the anvil plate defines the maximum size of the material which can be comminuted. To stabilize the rotation of the roll and yet permit this distance to be relatively great, a pair of massive circular spinning disks are mounted on the roll shaft coaxial with the roll. The disks flank the channel through which the material passes.

Abstract: A single-chain conveyor comprises a chain which runs centrally on the bottom of a conveyor trough and which has pushers which are secured to the chain by over-chain brackets which are guided along the trough bottom. The underside of the chain brackets are provided with slide surfaces which are made of a plastic material to facilitate the gliding movement of the brackets over the bottom of the trough. Pusher arms are also advantageously provided with slide surfaces made of plastic which engage in angle-profiled guide surfaces of the side walls of the conveyor trough.

Abstract: A chain conveyor, comprises a conveyor trough having a bottom and angled side guide wall surfaces. A link chain extends centrally along the trough, and it is supported above the bottom on a chain support which has a bottom face which is slidable along the bottom. A catch member is supported over the chain link on the chain support and it has arm portions extending laterally to each side of the chain with guide faces which are guided in the angled side guide walls of the trough. The chain support supports the catch member so that its bottom is spaced above the bottom of the trough.

Abstract: A conveyor trough construction, particularly for scraper chain conveyors, comprises a conveyor having longitudinal side walls formed with a plurality of abutting sections, each having a longitudinally extending bore therethrough which aligns with the next adjacent section. The bores of adjacent pairs of sections terminate in inwardly bevelled ends, and a coupling bolt extends through the bores of adjacent sections and terminates at each of its ends with an inwardly tapered portion which is engaged in the inwardly tapered ends of the bores. Each section is provided with a side wall opening, which extends into the bore, and a locking spring is inserted in the opening and engaged over the coupling bolt. The bore of the sections is dimensioned to provide an axial clearance for the locking spring.