Abstract: An exhaust tube for cryothermal vessels includes means for deflecting the exhaust gas upon entry into the tube.

Abstract: A device for removing smoke gases, dust and the like from a workpiece to be flamed includes a suction hood mounted on a movable flaming machine located before the flame burner as seen in the flame direction and is characterized by the hood being connected by a first duct to a trough to which a second duct communicates with a filter apparatus being at the free end of the second duct.

Abstract: A device for the flame treatment of a work-piece, includes upper and lower preheating blocks disposed to define a flame-oxygen duct, holding means operable for holding the blocks and including a gas distribution system communicating with said duct, and a separate nozzle communicating with the interior of the duct and operable for supplying oxygen to the duct.

Abstract: The device for introducing a gas into a liquid by supplying gas to a gas introducing means located on the bottom of a tank in which the liquid is being held, and collecting the gas above the liquid after it passes through the liquid. A closure for the tank acts to collect the gaseous substances which pass upwardly out of the liquid by adjusting the volume of enclosed space above the liquid level. A means is also provided for removing at least some of the gaseous substances which have accumulated in the enclosed space above the liquid and reintroducing them into the supply being introduced into the liquid at the bottom of the tank.

Abstract: A cutting torch machine has at least one vertical support displaceably arranged on a transverse track and carries a multiple-torch aggregate whose torches can be adjusted relative to each other. The support is rotatable about its vertical axis and two horizontal shifting devices are provided at its lower end diametrically opposite each other. Each shifting device has an adjusting device consisting of a segment and a drive for moving the segment to control the angular orientation of its cutting torch.

Abstract: An arrangement for cutting workpieces with a scanning device having a signalling photoresistor which detects markings, with an attached control device which contains a first timing element to which a switch for reducing the rate of speed is connected includes an OR-element connected between the first timing element and the switch with a further timing element connected by means of an AND-element to the input and output of the timing element with the input of the further timing element being connected to the output of the AND-element and the output of the further timing element being operationally connected to the input of the OR-element.

Abstract: Welding arc stabilizing and igniting is effected with at least one pulse-forming condenser switched by spark gap or semiconductor switch to deliver a sharp discharge pulse through the winding of a pulse transformer, the magnetic energy thus built up in the transformer being then dissipated by a unidirectional diode bypass of the winding through the switch. The pulses are delivered by the transformer to the welding electrodes, and can be combined with pulses of lower voltage and longer duration by an appropriate series condenser-resistor combination in the transformer output. The pulse-forming condenser can be charged by simple resistor connection to the input of a step-down welding current transformer, or by transformer coupling to any source of AC welding current.

Abstract: A device for linearly measuring a hot work piece includes a measuring roller for contacting the underside of the work piece with the roller mounted on a shaft in a tilting arrangement. A water supply is provided on the shaft communicating with a channel which extends into the roller and with the roller being open on at least one side thereof.

Abstract: Burrs are removed from workpieces by cold embrittlement in an axisymmetrical container having a rotatable bottom with stationary sides and with the liquefied gas being supplied along the axis of rotation of the bottom. The rotational axis is inclined 5.degree. to 25.degree. with respect to the vertical and the bottom wall is conical with a cone angle of 130.degree.-170.degree..

Abstract: A method of producing hollow articles of plastic material by blow molding is characterized by blowing compressed air into the preform at the beginning of the admission phase to intensify the inflation operation and its admission is interrupted before the final blow pressure is reached.

Abstract: A pipe cutting and/or welding device has a chuck for rotating the pipe with the chuck jaws connected with an activating device provided with torque limiting means. The torque limiting means has an adjusting device for switching from a low torque value for the clamping of the pipe to a high torque value for releasing the pipe.

Abstract: A process for cooling cryocables by low-boiling gases includes recooling gases at cooling stations distributed along the length of the cable. The pressure loss of the gases is equalized at pumping stations equally distributed along the length of the cable. A slush of the low-boiling gas is produced and used as the coolant at each cooling station.

Abstract: A scanning device for causing a torch to follow impact lines or edges of the workpiece includes a magnet-field generator which moves transversely to the line to be followed as well as a scanning device which is characterized by two scanning heads arranged on both sides of the line being followed with the signals of the scanning head being electrically connected in opposition to each other.

Abstract: A device for positioning a cutting torch aggregate includes a movable sled for carrying the torch. The sled is connected by means of a spindle to an adjustable drive which is activated by its engagement with a nut which mounts the sled to the spindle. The nut activates a control for the drive.

Abstract: Fins or ridges are removed from molded workpieces by insertion into a rotating drum where they are subjected to the action of free hanging chains each mounted at one of its ends to the inner wall of the drum. Each chain has a length no greater than the inside diameter of the drum.

Abstract: Organs or parts of organs are conserved by being rinsed with an inert gas or mixture until they are free of water and blood. Their vascular systems are filled at slight excess pressure of an inert gas or gas mixture, and finally the organs or parts are cooled at excess pressure in an inert gas atmosphere to a temperature below -100.degree. C and are stored at this temperature.

Abstract: A process for preparing fine-grained slush of low-boiling gases is characterized in that the liquefied gas or the very cold gas under high pressure is relieved from stress in a nozzle alternately first to a pressure below the pressure of the triple point in the gas-ice range and subsequently to a pressure above the pressure of the triple point in gas-liquid range.

Abstract: A flame-cutting machine having a moving torch carriage includes a scrap-cutting arrangement which is mounted directly on the torch unit and is activated in accordance with the movement of the flame-cutting machine.

Abstract: A process for cooling by means of a low-boiling gas comprises the steps of continuously producing a gas slush and conveying it from the location of its production to the place of consumption. The gas slush releases its heat of fusion at the place of consumption and becomes a triple-point liquid. The liquid is returned to the location of production to produce fresh slush.

Abstract: A device for cooling bulk material by low-boiling liquefied gas includes a precooling zone and a spraying zone. The precooling zone is inclined from the horizontal downwardly toward its discharge end to which is attached a rotatable drum-shaped chamber as its spraying and draining zone which is constructed as a worm conveyor. Where used for scrap tires, a spray pipe is provided at the discharge end with a ring mounted on the internal wall between the spray orifices and the discharge opening, the ring having a thickness corresponding to the average tire thickness.