Vereinigte Osterreichische Eisen- Und Stahlwerke-alpine Montan

Voest-alpine Aktiengesselschaft

Siegfried Sigott

Alfred J Zitz

Gottfried Siebenhofer

Heinrich Suessenbeck

Herwig Wrulich

Otto Schetina

Peter Kogler

Heinrich Sussenbeck

Emanuel Strahsner

Otto R Schetine

Wilhelm F Althaler

A device for transferring the debris cut by a cutting machine during mining operations onto a drift conveyer comprises a pair of bridge conveyers connected to each other. The first bridge conveyer has its receiving end pivotally connected to the cutting machine with its discharge end being supported by a dirigible chassis. The second bridge conveyer is supported on the chassis of the first conveyer and pivotable about its horizontal and vertical axis. The support chassis is capable of being swivelled around a vertical axis relative to the first bridge conveyer.

Device for transferring the cup heap of debris onto a drift conveying

A hydraulic mine prop includes an inner piston-like prop guided within an outer cylinder-like prop, and a roof fall valve. The interior space of said inner prop communicates freely with the working chamber of the prop, and the roof fall valve is arranged outwardly on the prop and rigidly secured thereon, the valve being connected to the working chamber by an orifice provided in the prop and leading to the working chamber. The cross-sectional area of the roof fall valve in its open position.

Hydraulic mine prop

The invention refers to a device with which provisional consolidating frames adapted to be brought to a smaller size can be transported to the drift face and can be put in place. According to the invention this device is arranged on the cutting machine itself so that the narrow space remaining between the contour of the cutting machine and the cross section of the drift is sufficient for transporting in forward direction and putting in place the provisional consolidating frames without the necessity to retract the face advancement machine from the drift face. Thus, face advancement machines can be used which occupy the major part of the inside width of the drift, noting that the face advancing machine is maintained in its working position. The invention further describes a doorjamb frame for the provisional drift consolidation and which is particularly suitable for the device proposed.

Device for provisionally consolidating a gallery and suitable

A cutting machine includes an endless conveyor and a loading ramp having movable loading arms which continuously shift the cut material in an upward direction of the loading ramp to conveyor. The rear deflector wheel of the conveyor is driven by a squirrel-cage motor, and the drive of the loading arms is, via the conveyor derived from the front deflector wheel. A slipper clutch is interpositioned within the drive between the motor and the loading arms, and the slide torque of the slipper clutch as reduced to the motor shaft, exceeds the breakdown torque of the squirrel-cage motor.

Cutting machine

Apparatus for removing dust particles from an air stream includes a tubular housing having an inlet end and an outlet end; a plurality of Venturi tubes having open inflow ends and open outflow ends supported side-by-side within the housing, with their axes parallel to the housing axis so that their inflow ends receive air flowing into the inlet end of said housing; a nozzle for spraying water into the air entering each of the Venturi tubes whereby dust particles in the air are collected in the water and whereby sludge-containing water and air are discharged through the outflow ends of said Venturi tubes; a tank which surrounds said tubular housing, the tank having an outer wall surrounding and spaced from the tubular housing and partition means in the space between said outer wall and the tubular housing dividing the space into first and second compartments; a sludge separator in communication with the outflow ends of the Venturi tubes; conduit means connected to the sludge separator for supplying sludge-containing water from the separator to the first compartment; a sludge outlet for the first compartment; a conduit for conveying essentially sludge-free water from the first compartment to said second compartment; a fresh-water supply connected to the second compartment; and a nozzle-supply conduit connecting the second compartment with the nozzle for supplying water thereto.

Equipment for removing dust particles from an air stream

In a method and apparatus for cutting minerals utilizing a cutting tool provided with cutting teeth, the tool rotates about an axis approximately parallel to the winning face and is moved at a feeding rate essentially in axial direction. Several grooves spaced from each other are carved in sequence, and in dependence on the mineral properties the feeding rate is increased with respect to the rotatory velocity when a brittle mineral is to be cut, while the feeding rate is diminished with a tough mineral.

Method for cutting minerals and cutting machine

A pressure relief valve for hydraulic mine supporting elements, particularly mine props, has a valve member loaded in its closing direction by a spring, a piston is connected to the valve member end sealingly sliding within a cylinder of the valve housing and arranged to be acted upon in closing direction by the pressure prevailing within the space before the seat of the valve member. The valve member has a neck portion of reduced diameter between the valve seat and the piston and the annular cross section, being acted upon in closing direction, between the neck portion and the circumference of the piston is smaller than the annular cross section, being acted upon in opening direction, between the neck portion and the valve seat.

Growing community of inventors

Zeltweg, Austria

Siegfried Sigott