Abstract: A liquid counter having a rotor pivot operating in a stream of cryogenic medium includes a friction bearing for the rotor pivot loosely mounted in a housing while the liquid counter is operative but arrested in the housing both radially and axially.

Abstract: An ignition device for igniting flame cutters is directly connected with one of the passages for the fuel gas mixture to thereby assure a constantly certain ignition.

Abstract: A device for cutting a wide continuously cast work piece includes a longitudinal cutting device located downstream from the casting plant with a traversal cutting device mounted downstream therefrom.

Abstract: A welding torch for arc welding includes a housing, a contact tube having a polygonal cross-section disposed in the housing, and a securing device for replaceably securing the contact tube within the housing.

Abstract: A wire being galvanized leaves a zinc bath with the adhering liquid zinc forming after solidification of the zinc layer and with the surface of the wire being rapidly cooled by a cooling agent such as liquid nitrogen immediately after leaving the zinc bath to increase the thickness of the adhering zinc.

Abstract: A cutting machine for severing a moving strand portion includes an elongated support; the strand portion normally moves near the support in one direction of elongation thereof, and a carriage may be operably moved on the support in the one direction and in an opposite direction. A cutter is disposed on the carriage, and the movement of the carriage is synchronized with that of the strand by a rotatable roll in operative driven relationship from the strand. The rotation of the roll is selectively converted into a translatory motion of the carriage, so that the strand may be cut by the cutter, while it is moving in synchronism therewith.

Abstract: An apparatus for separating the gas which evaporates during the transfer of low-boiling gases includes a porous hollow body which is supplied with the gas-liquid mixture to be separated and arranged inside an insulated vessel having discharge lines for the gas and liquid phase. The porous hollow body is cylindrical and concentrically around the discharge line for the liquid phase and is installed in the vessel cover by means of a pipe and an inner non-porous extension with an annular space therebetween to which the gas phase discharge line is connected.

Abstract: In a process for the treatment of water with ozone a partial current of treated water is contacted under pressure in a packed column with an oxygen-ozone mixture from an ozonizer to oxidize water contaminants and to improve their flocculation. The portion of oxygen which has not dissolved in the water in the packed column is recycled into the ozonizer and the treated partial water current is mixed again with water to be treated. The pressure in the column is adjusted in dependence on the nitrogen content of the water to be treated. By this measure is ensured that the quantity of nitrogen escaping from the water and contained in the cycle oxygen permits an optimum operation of the ozonizer. The nitrogen content in the cycle oxygen is preferably kept below 10% by volume.

Abstract: A process for the treatment of water in which at least a partial flow of the water is brought into contact under pressure in a packed column with an ozone-oxygen mixture from an ozonizer with the ozone and a portion of the oxygen being dissolved in the water and the undissolved oxygen being returned to the ozonizer and with the charged water being withdrawn from the column, includes branching off a partial flow from the column water to a water jet-gas compressor in which the ozone-oxygen mixture from the ozonizer is adsorbed and compresed and mixed with the partial flow after which the mixture of water, ozone and oxygen is led into the base of the packed column.

Abstract: A flame cutting machine includes an ignition system for igniting the fuel gas which is connected by a transverse bore to a longitudinal bore parallel to the blend canal of the machine.

Abstract: A device for marking workpieces by means of powder includes a nozzle from which emanates a powder spray circumscribed by a heating flame with a burner being at one end of the nozzle attached for powder marking and whose other end is attached to a powder container connected to the nozzle via a tube.

Abstract: An exhaust vent for cooling rigs transported on vehicles the interior of which is cooled by the introduction of low boiling gas includes inserts in front or behind the exhaust vent to force the outflowing gas to be deflected several times.

Abstract: A flame cutting installation with at least one flame cutting aggregate for cutting continuously cast workpieces in a cutting zone is provided with a noise protection device which encloses the installation from the environment with the noise protection device enclosing only the cutting zone.

Abstract: A system for guiding a tool according to a predetermined direction includes a detector head which photoelectrically scans a line of the pattern with the line varying in width at predetermined locations and with the output signals of the scanning photoreceptors being conductable to a switching device having an adjustable switching threshold so that when the scanning is in the area of the altered line width an auxiliary signal is formed in addition to the control signal for the coordinate motors.

Abstract: In a method of preserving in a storage vessel a volumetric ratio of a calibrating gas mixture within a range from below 1 vpm to about 10,000 vpm, wherein the calibrating gas mixture includes a carrier gas and a predetermined trace of another gas, and the storage vessel has inner steel walls electroplated with a metal selected from the group of tin, zinc, nickel and lead, the selection depending on the mixture, the steps include introducing the gases into the storage vessel under relatively high pressure of not more than 200 atmospheres, storing the gases in the storage vessel, so as to preserve the volumetric ratio between the gases within a predetermined accuracy, transporting the gas mixture within the storage vessel, and discharging the calibrating gas mixture from the storage vessel while still retaining the volumetric ratio.

Abstract: An apparatus for flamescarfing the surface of a workpiece includes a powder supply device having a powder container connected via a shut-off valve to a powder distributor which is connected via hoses with nozzles mounted on the flamescarfing burner.

Abstract: Large amounts of low boiling liquefied gases are evaporated by heat transfer in a cylindrical combustion chamber without a convection component and a passage for the gas to be evaporated surrounds the combustion chamber so that the liquefied gas is exposed to a burner flame upon entry into the passage.

Abstract: A device in the form of a double-walled pipe for cooling continuous profiles includes a core pipe of a cross section corresponding to the profile being cooled and which is interchangeably inserted in a jacket pipe with at least one low-boiling liquified gas injection orifice in the core pipe near the intake opening for feeding vaporized gas into the cavity formed by the core pipe and the continuous profile.

Abstract: An apparatus for cooling rubber covered wheels having a hard rubber covering which is to be removed by cold shrinkage includes a horizontally arranged insulated support disc for the wheel and an insulated cover cap for covering the wheel on the disc with a slot-shaped space being formed between the cover cap and wheel in the area of the wheel rim and with at least one supply pipe disposed in the space for feeding a liquid coolant agent.

Abstract: Small amounts of low boiling liquefied gas are metered in an apparatus which has a pipeline exiting into a hollow sintered metal body mounted within an inner container with the container having a drain hole at its bottom for liquefied gas and at least one discharge opening at its upper portion for evaporated gas; the inner container is surrounded by an insulated outer container with a space therebetween and with a gas discharge opening in the outer container beneath the drain hole for liquefied gas.