Abstract: A grain harvesting combine drives the grain in the combine vehicle using three separate chambers connected by auger conveyors. The grain is heated in the first two chambers and air is circulated through them to move the moisture away from the grain. The first chamber is preferably heated by a heat exchanger having fluid that is heated by rejected heat from the combine engine, while in the second chamber a hollow body having a diesel or propane burner within it is provided. In the third chamber ambient or cooled air is passed through perforated walls of the chamber to cool the grain before it is discharged through a load out tube auger to a waiting truck.

Abstract: Mined material, such as coal, is transported in a curvilinear path. An endless conveyor belt is mounted by a string of wheeled cars having upper and lower sets of rollers. The cars are positioned at a sharp turn connecting first and second paths extending between a mine bore and a remote area. The cars positioned at the sharp turn reorient the conveyor belt from a generally horizontal position to a generally vertical position and back to a generally horizontal position. The mined material is moved off the conveyor belt before reorientation, at a location between the sharp turn and the mine bore. The cars have first and second sets of wheels with the frames pivotally connected between the wheels, for pivotal movement about an axis parallel to the axes of the wheels. Coupling elements connecting the cars together provide a universal joint action.

Abstract: A self-propelled conveyor includes a number of auger sections each section including at least one spiral mounted on a shaft, a housing surrounding the spiral and having two end terminations, and structure for driving of one spiral by driving an adjacent spiral whether or not the shaft of the spirals are in line with each other. The driving structure can comprise axially and radially extending projections from each adjacent shaft providing a lost motion connection between the shafts, or a universal joint. More than one auger may be mounted in each housing section, with a common drive shaft for the augers connected by a universal connection to a similar drive shaft for an adjacent auger section. The end terminations of the housing allow relative pivotal movement between adjacent housing sections at least in a horizontal plane, and comprise inter-engaging cylindrical section elements allowing relative rotational movement between adjacent housing sections of at least about 15.degree..

Abstract: A spiral conveyor section assembly for a mining machine includes a spiral conveyor mounted by a shaft for rotation about an axis, the shaft having first and second free ends each adapted to be connected to another shaft. A motor, gearing, and like power device effects rotation of the shaft about its axis. The power device is mounted directly in association with the spiral conveyor between the ends of the shaft. The power device has at least about 1/4-3/4 horsepower for each foot of spiral conveyor (e.g. about 32-36 inches in diameter). A second (or more) spiral conveyor can be provided mounted parallel to the first, with the power device effecting rotation of both, toward each other. A guard is mounted in association with each inner portion of the spiral section to prevent mined material from being flung from one spiral to the other. It is possible to convey mined material 1,000 feet or more utilizing spiral conveyor sections connected end to end.

Abstract: Conveyor belt supporting modules associated with an endless conveyor belt assembly for conveying mined material from a mine bore to the mouth of the bore allows for necessary length of conveyor belt to be fed into the mine, and convey material from the mine, as the bore lengthens so that the conveyor belt always extends from adjacent the cutting site to the bore mouth. Each module has a carriage frame with a number of conveyor belt supporting return rollers extending between the frame sides, and a number of conveyor belt supporting trough roller sets mounted above the return rollers and spaced from each other from the front to the rear along the frame. The carriages have axles and wheels to allow movement into a bore, and they are connected together by couplers. The supporting trough roller sets are mounted for pivotal movement on a frame side to expose the return rollers so that the endless belt can be laid in place simply and quickly.

Abstract: A mining machine and method allow coal or the like to be mined substantially as quickly during out cutting as in cutting. A front cutter is mounted at the front of the frame, and a first conveyor, which preferably comprises a chain conveyer, conveys cut coal from the front of the frame to the rear and ultimately out of the area being mined. A second conveyor is mounted in back of the front cutter for conveying cut coal from adjacent the rear of the frame towards the front, and ultimately to be deposited on the first conveyor. A rear cutter is located to the rear of the second conveyor for cutting material during out cutting to be moved to the second conveyor as the machine moves rearwardly. The rear cutter is movable from a first inoperative position within the volume cut by the front cutter, to a second, operative position outside the volume cut by the front cutter.

Abstract: A miner, and method of mining, are provided for pitch seam mining of coal. The cutting heads powered from a power source at the mouth of the seam are introduced into the seam with a desired angle of inclination, and a chain conveyor with conveying elements extending between two spaced loops of chain conveys the cut coal from the seam to the mouth. Bucket conveyors, or drag flight conveyors, are preferred. The bucket conveyor can be used for pitch seam mining where the angle of inclination is about 15.degree.-80.degree. from the horizontal, and the drag conveyor can be utilized where the angle of inclination is about 15.degree.-35.degree. from the horizontal. A pair of powered shafts extend from the cutter power source to the cutting heads, and support the chains via sprockets, guides, and the like.

Abstract: A mining machine is utilized for making original generally horizontal bores in coal steams, and for enlarging preexisting bores. A single cutting head is mounted for rotation about a first horizontal axis generally perpendicular to the dimension of elongation of the horizontal bore, and is pivotal about a second horizontal axis, parallel to the first axis, to change its cutting, vertical position within the bore. A non-rotatable body member, with side wall supports, is mounted posteriorly of the cutting head, and includes a conveyor mechanism and a power mechanism operatively connected to it. The machine can be sumped into a bore and then the cutting head rotated about the second axis to change the vertical position thereof, and then moved rearwardly, any cut material being continuously conveyed to the bore mouth by the conveyor mechanism.

Abstract: A full face miner including a simplified conveying arrangement and designed for easy maneuverability into and out of mine sites. A plow operatively mounted to and longitudinally movable with each of a pair of rotatable cutting heads of the miner provide for the conveyance of cut coal to a middle conveying portion for ultimate transport away from the mine site. The mounting mechanism for the cutting heads is designed so that at least the end portions thereof are movable from a position generally parallel to the mine face to a position generally perpendicular to the mine face and extending in front of and in line with the central conveying means, for ease of withdrawal from the mining area. A motive power source, such as a powered crawler or powered wheels, is provided which is movable into operative engagement with the ground to transport the miner to and from the mining site when in a collapsed position.