Abstract: In a heading machine (1) including a machine frame equipped with a travelling mechanism (2), a cutting boom (3) carrying cutting tools (5,8,10), and a hauling means (19) extending in the longitudinal direction of the machine beyond the rear end of the machine frame, the cutting tools (5,8,10) are formed by at least two rotating cutting heads (5) having axes of rotation (6) extending in the heading direction or enclosing acute angles with the heading direction, and a unit (21) capable of being trailed behind the machine frame and having a passage cross-section (33) for the hauling means (19) is hingedly connected to the machine frame by the aid of hydraulic piston cylinder units (29,30), which unit comprises at least one anchor boring and setting device (23), and at least one supporting device (24) which is braceable against the roof (7) and the floor (9), each on both sides of the hauling means (19).

Abstract: In a starter car for a drilling device for mining underground deposits, including a base frame (5) mounted to rotate about a vertical axis (6) and a starter pipe (7) mounted to pivot about a substantially horizontal axis (13) and provided for receiving the drilling device, the starter pipe (7) is arranged to be displaceable relative to the base frame (5) transversely to the horizontal pivot axis (13).

Abstract: In a method for mining underground deposits using a mining machine, wherein an upper and a lower drift are driven, which extend on both sides of the deposit to be mined, and a preliminary bore is sunk between the two drifts, a supporting device is fixed at the mouth of the preliminary bore in the upper drift. A mining machine supported on the supporting device is positioned at the mouth of the preliminary bore so as to be oriented in the longitudinal direction of the preliminary bore, and the mining machine is advanced from the upper drift to the lower drift corresponding to the course of the preliminary bore.

Abstract: The joint-pin modular unit for articulately connecting a fork-type or stirrup device (1) with a connecting eye embracing a joint pin (8) of the fork-type or stirrup device (1), includes at least one seal (9) provided between the connecting eye and the pin, wherein the joint pin (8) is rotationally guided in bearing bushes (6, 7) of the fork-type or stirrup device (1) and annular seals (9) are arranged between the connecting eye and the bearing bush end faces located adjacent to the connecting eye. The externally located end faces of the pin (8) are closed by covers (10, 11) tightly covering the bearing bushes (6, 7), wherein the surface of the pin is surrounded by a lubricant film and at least one substantially axial bore (13), and a plurality of radial bores (14, 15) leading to the surface of the pin, are provided for the supply of lubricant.

Abstract: In a device for sealing a bore hole and discharging drill cuttings and stripped excavation material, including a housing adapted to receive sealing elements and an opening capable of being connected to the bore hole, one side wall of the housing is provided with at least one opening for the connection of a haulage duct, wherein the housing end side facing the bore hole is equipped with a lockable, particularly screwable, sealing flange (13) for the detachable connection with a bore hole lining (11). The sealing flange (13) is rotationally and sealingly mounted within the housing and carries projections, in particular an annular brim (15) which is overlapped by a stop (14) of the housing.

Abstract: In a device for extending and shortening tubings used to transport drill cuttings and stripped material, a tube storage or tube magazine is provided on a frame (1) capable of being supported on the floor, wherein at least one lifting means (3) capable of being displaced in the height direction and intended to lift tubes (17) into a storage position as well as at least one manipulator (13) intended to position a tube removed from the tube storage into a position in alignment with a laid tube track are arranged on the frame (1). The frame includes at least one longitudinal guide (5) for a telescoping tube (7) that is capable of being integrated in the tube track.

Abstract: The joint-pin modular unit for articulately connecting a fork-type or stirrup device (1) with a connecting eye embracing a joint pin (8) of the fork-type or stirrup device (1), includes at least one seal (9) provided between the connecting eye and the pin, wherein the joint pin (8) is rotationally guided in bearing bushes (6, 7) of the fork-type or stirrup device (1) and annular seals (9) are arranged between the connecting eye and the bearing bush end faces located adjacent to the connecting eye. The externally located end faces of the pin (8) are closed by covers (10, 11) tightly covering the bearing bushes (6, 7), wherein the surface of the pin is surrounded by a lubricant film and at least one substantially axial bore (13), and a plurality of radial bores (14, 15) leading to the surface of the pin, are provided for the supply of lubricant.

Abstract: In a device for sealing a bore hole and discharging drill cuttings and stripped excavation material, including a housing adapted to receive sealing elements and an opening capable of being connected to the bore hole, one side wall of the housing is provided with at least one opening for the connection of a haulage duct, wherein the housing end side facing the bore hole is equipped with a lockable, particularly screwable, sealing flange (13) for the detachable connection with a bore hole lining (11). The sealing flange (13) is rotationally and sealingly mounted within the housing and carries projections, in particular an annular brim (15) which is overlapped by a stop (14) of the housing.

Abstract: In a device for extending and shortening tubings used to transport drill cuttings and stripped material, a tube storage or tube magazine is provided on a frame (1) capable of being supported on the floor, wherein at least one lifting means (3) capable of being displaced in the height direction and intended to lift tubes (17) into a storage position as well as at least one manipulator (13) intended to position a tube removed from the tube storage into a position in alignment with a laid tube track are arranged on the frame (1). The frame includes at least one longitudinal guide (5) for a telescoping tube (7) that is capable of being integrated in the tube track.

Abstract: In a hewing or cutting roller (1) of variable cutting width, in which two pivotable tool carriers (4, 5) for receiving cutting or hewing tools are arranged on at least one lateral end face (2) of the roller transverse to the axis of the hewing or cutting roller (1), one of the tool carriers carries a locking pin (10) which cooperates with a hook-shaped locking member of the other tool carrier in the extended position of the tool carriers (4, 5).

Abstract: A device for feeding cooling fluid into the inside of a shearing drum. The rotary drive of the shearing drum has at least one gear reduction mechanism contained within the hollow shearing drum. Fluid lines are led into the axial region of the shearing drum via a component which is stationary and rigidly connected to the carrier of the shearing drum. The gear reduction mechanism is arranged concentric with the axis and at least one of the fluid lines is led to at least one lateral end face where the fluid line supplies a fluid distributor which in turn distributes the fluid to various jets and fluid lines.