Abstract: A mist generator particularly for spraying pesticides on plants includes at least two exhaust nozzles from which generated mist is emitted from the mist generator, the nozzles being jointly fed by a common pulsating combustion chamber and extending in generally opposite directions.

Abstract: Continuous metal casting method, especially continuous steel casting method, in which the melt is set in rotation about the strand axis within the continuous casting mold and gas in the gaseous or liquid state is fed onto the bath surface excentrically to the mold axis and at an acute angle to the velocity vector of the rotatory movement. The rotatory movement of the melt is brought about substantially by the thrust of the gas directed at high velocity onto the bath surface. The apparatus for the practice of the method has circumferentially of the mold, at least 2 terminal fittings of gas feed lines, whose discharge orifices are so constructed that a rotatory movement of the melt is brought about substantially by the thrust of the gas directed at high velocity against the bath surface.

Abstract: A thread monitor particularly for a sewing machine having a needle, the monitor comprising a control device operable for stopping the operation of the machine, a thread feeler engageable with the thread supplied to the needle, and a bracket mounting the feeler for movement between a retracted position with respect to the control device and an operative position for actuating the control device for stopping the operation of the machine. The feeler is biased toward its operative position, the bias being greater than the frictional force present between the feeler and its mounting as the machine vibrates during the operation thereof but less than the frictional force present between the feeler and its mounting when the machine is not in operation, so that, upon thread breakage when the machine is in operation, the feeler will move to its operative position for stopping the operation of the machine and, when the machine is not in operation, the feeler remains in retracted position.

Abstract: An electric metallurgical furnace in which at least one row of the bricks that adjoin the annular flange the outer edge is displaced outwardly with respect to that of the bricks and the rows adjoining the annular flange are pressed by the flange on to the rows below.

Abstract: An electric brake motor, particularly of the kind having a squirrel cage rotor and a slow-running stator winding with a large number of poles, is provided with electrical switching means to increase the motor current briefly on starting, at least on starting of the slowrunning winding, so as to increase the magnetic field generated by the motor current for releasing the brake. The switching means may be contacts actuated by axial movement of the rotor on starting, or a relay or contactor operated by the motor current or by a control switch. The increase in current may be achieved by briefly shortcircuiting part of the motor winding or by briefly connecting a second, fast-running stator winding in parallel with the slow-running winding in the case of a change-pole motor.

Abstract: A chain-type ascent system for a roller-coaster has an inclined track section having a lower upstream end and a higher downstream end relative to a predetermined direction of travel of a roller-coaster car therealong. Upstream and downstream wheels are provided at the upstream and downstream ends and a pair of I-beams define a guide slot extending between these upstream and downstream wheels and along the track section. A pair of substantially parallel and endless chains are reeved over these wheels and extend along the guide slot, and a multiplicity of shoes transversely bridge between these chains at spaced-type locations therealong. Each shoe is of I-section and is engageable in and guidable by the slot, so that the chains are supported from the shoes at the slot. In addition the chains carry at least one engagement element that can engage behind and push a roller-coaster car from upstream to the downstream end of the track section.

Abstract: An overhead track assembly for an amusement-park ride has a plurality of bases adapted to rest on the ground and each supporting an upright post having an upper end forming a support surface and having a pin projecting upwardly from this support surface. A plurality of track sections each include a central hollow beam having one end formed with an upper eye and another end formed with a lower eye, a pair of generally parallel rails flanking the beam and adapted to guide a car longitudinally along the beam, and transverse members interconnecting these rails and the beam rigidly. The track sections are secured to the upper ends of the posts with the pins at these upper ends extending upwardly through the lower eye of one respective beam and through the upper eye of another respective beam.

Abstract: Melting furnace, especially an arc melting furnace, with a bottom vessel, in which the furnace wall contains at least one water cooling box welded of steel plate and disposed above the melt level, whose surface facing the furnace interior is provided with projections which facilitate the adhesion of a refractory protective layer formed on this surface, wherein the wall of the water cooling box, which faces the furnace interior, has a thickness of at least 15 mm, the projections are formed of profile irons, and a refractory composition applied beforehand serves as the refractory protective layer. Also, a seam or flange between the upper edge of the bottom vessel and the water cooling box so as to catch water flowing down the inside of the furnace and to pass it outwardly.

Abstract: An electrode for electric arc furnaces, in particular for production of iron and steel, comprising a liquid-cooled upper portion, which may be inserted into an electrode holder, a lower portion forming the electrode tip being detachably fastened to the upper portion, which upper portion contains a conduit system for the cooling liquid protected by a fire-proof material, by way of which conduit system the electric current of the arc electrode may also be conducted. Heat conducting projections covered by the fire-proof material are provided on the outer surface of the conduit system facing the furnace chamber, while an electromagnet for producing a magnetic field is disposed in the region of the fastening point of the electrode tip to cause the arc on the electrode tip to move.

Abstract: Pile extraction apparatus having a clamping device for clamping engagement with a pile. The device is suspended from a section of casing pipe by way of a universal joint. In this way the extraction apparatus may be raised and lowered by a commercially available pipe extraction machine.

Abstract: An apparatus for withdrawing and cleaning emissions of a battery of coke ovens, which emissions occur during the filling, coking, especially within the region of the doors, and during the pushing. The battery of coke ovens includes a charging larry with a withdrawal device for the filling gases. This battery is provided with suction conduits located on both sides of the battery and above the doors, while extending in the longitudinal direction of the battery. Connected to the suction conduits are collecting chambers for dust laden gases which rise within the region of the doors. A coke quenching car is displaceable substantially parallel to the battery. The coke quenching car has associated therewith a collecting hood which extends over the coke quenching car and which is provided with a withdrawing device for dust laden gases and vapors.

Abstract: Method of and apparatus for processing run-stitched collars, in which the points of the collars are trimmed, and the collars are everted and pressed. In the pressing operation, the collars are given a wiping action.

Abstract: A device for collecting emissions rising from a quenching car of a battery of coke ovens which device is displaceable on rails parallel to the battery of coke ovens and a collecting conduit for the emissions of the quenching car. The device includes a withdrawal connection for the emissions which is connectable to desired spots of the collecting conduit. The device also includes a first hood above which there is provided a collector for the emissions which extends in the longitudinal direction of the first hood. At one end of the first hood the collector is provided with a transition or conveying member from the first hood to the collector. This transition or conveying member has associated therewith a pre-adjustable throttle flap.

Abstract: Method for sinking a cased borehole for producing cased pile foundations. The method uses an apparatus comprising a crane, a drilling appliance capable of being lowered into the borehole and a tube extraction machine with double-acting lifting cylinders for increasing the drilling pressure and for extracting the drop tube after the pile has been concreted. The drilling appliance is capable of producing a borehole with a larger diameter than that of the drop tube and can be fixed to the drop tube by means of a clamping device for withstanding the torque of the motor used for driving the drilling tool. In the method, the drop tube is axially secured and is prevented from locating with respect to the ground, a section of borehole having a greater diameter than the diameter of the drop tube is drilled, and subsequently the axial securement of the drop tube is released so that the drop tube slides downwards by a length corresponding to the length of the section of borehole drilled.

Abstract: A cover for an arc furnace having a plurality of electrodes extending through a central area of the cover, a first cooling box surrounding the electrodes and a second cooling box in the outer area surrounding the central area of the cover. The first cooling box is subdivided into a plurality of cooling areas respectively associated with the plurality of electrodes, the cooling areas being electrically insulated from each other and from the second cooling box.

Abstract: A rotary boring head for earth and rock formations with pivotal wings which may be swung radially outwardly and which are provided with inclined return rails. Upon upward movement of the rotary boring head the earth mass presses upon the inclined return rails, so that the pivotal wings are reliably swung inwards again and cannot impinge on the bore tube.

Abstract: A padded headrest for the seat back of a motor vehicle includes a stirrup-shaped mounting body pivotally mounted on a horizontal support through vertical supports which are longitudinally adjustably connected to the mounting body and which are fastened in corresponding receiving parts at the seat back. The assembly consists of a device for securing the headrest body in each adjusted inclined position at the horizontal support and is characterized in that the stirrup-shaped mounting body of the headrest body is longitudinally movably guided in at least one helically arranged peripheral recess of a horizontal support having an at least semicircular cross-sectional profile and being attached to vertical supports in a manner preventing the horizontal support from pivoting.

Abstract: In a safety restraining device useful as a child's seat for a motor vehicle, a first restraining body is pivotally mounted for movement from a first position where a child has freedom of movement and can use the body as a table surface, to a second position where the body prevents the forward movement of the child's upper body when a sudden strong deceleration of the vehicle occurs. A flywheel mass mounted in the first restraining body or in an associated side member effects the movement of the first restraining body into the second position. In addition, a stationary second restraining body cooperates with the first restraining body to hold the legs and pelvic region of the child when the first restraining body moves to the second position.

Abstract: A liquid-cooled electrode for electric arc furnaces having a cover secured to an electrode supporting arm and containing cooled metal elements and having a core which can be axially displaced in the cover, into which core the electrode current can be conducted by way of a current conection. The current connection is disposed above the cover, while the cover is electrically insulated from the core and the insulation includes an insulating layer between the cover and the core. In addition, a device for producing a magnetic field is provided in the lower portion of the cover.

Abstract: Apparatus for guiding work through a sewing machine in which the work, as it is fed through the machine, is biased laterally into engagement with an edge guide by a vacuum-induced flow of air. The apparatus is particularly useful for guiding superposed plies of material as they are fed through the machine and aligning the edges of the plies along which they are stitched by the machine.