Abstract: Visual data transmission by an air-gapped system, including: transmitting, by an air-gapped system comprising at least one first computing device, a visual encoding of data via a display; detecting, during capture of the visual encoding of the data by a second computing device via a camera, an error; generating, by the second computing device in response to the error, and alert; and retransmitting, in response to a user input to the air-gapped system, at least a portion of the visual encoding of the data via the display.

Abstract: Visual data transmission by an air-gapped system, including: transmitting, by an air-gapped system comprising at least one first computing device, a visual encoding of data via a display; detecting, during capture of the visual encoding of the data by a second computing device via a camera, an error; generating, by the second computing device in response to the error, and alert; and retransmitting, in response to a user input to the air-gapped system, at least a portion of the visual encoding of the data via the display.

Abstract: Device for the alumino-thermic welding of two ends of a rail A device for the alumino-thermic welding of two ends of a rail, namely a casting mould (4) which is open on the upperside and which comprises a central casting chamber which is defined by the rail ends, which are spaced apart from each other by a welding groove (3), and also by the walls of the casting mould (4) and to the side of the casting chamber said casting mould comprises at least one riser (13) which is permeably connected to the casting chamber only in the region of the rail foot (11), and wherein a reaction pot (1) is provided on the base side with an outflow device which causes a steel melt to flow out of the reaction pot (1) and into the casting mould (4), is configured substantially to obviate turbulent flow conditions inside the casting mould and to homogenise the solidification of an intermediate cast structure between the ends of the rail such that the steel issuing out of the reaction pot (1) after the completion of an alumino-therm

Abstract: A switchgear cabinet with two profiled frame sections, assigned to one side of the switchgear cabinet, wherein the open side of the switchgear cabinet is partially closed or can be partially closed by at least one wall element. A horizontal cross brace is arranged between the vertical profiled frame sections, against which the wall element rests in an area of one of its horizontal lateral edges. An open transition area in the side of the switchgear cabinet between the cross brace and the cover and/or the bottom area of the switchgear cabinet is covered by a shield. For simplification, the shield is fastened on a fastening section of a holder from the direction of the interior of the switchgear cabinet. With the shield in an unmounted position, the holder is maintained by a locking element in a prepared mounting position.

Abstract: The invention relates to a process for the aluminothermic welding of rails, the aluminothermically produced steel being poured into a refractory mold surrounding the rail ends which are to be joined, and alloying additives being contacted with that part of the steel which runs out of the reaction crucible and forms the weld in the rail head region, wherein the alloying with the alloying additives is carried out after the completion of the aluminothermic reaction and separation of the steel from the slag via the diverting plug in the mold, and the overflow in the is closed.

Abstract: The invention relates to a cooler which can be fitted on the cover of a control box and connected thereto via an inlet aperture. The rain and dustproofing is improved by the invention in that an air inlet and outlet are fitted in the top of the cooler housing away from the control box, a cover component is connected to the top of the cooler housing at a distance therefrom, projects on all sides of the cooler housing and forms around it a downwardly open ventilation grille and is divided by partitions in the cover component into at least two chambers connected to the air inlet and outlet.

Abstract: A closure for a switchgear cabinet door, machine case or the like, having a safety device. A lock is attached to the switchgear cabinet door, machine case or the like with a first locking element, and a second locking element is attached to the door frame, machine case frame or the like. Both locking elements can be brought into and out of functional connection with each other under the control of an electric signal. Additional locking of the closure can be simply achieved with commercially available locks because the lock has a turnbuckle, which can be rotated by 90.degree., as the first locking element, and an electromagnet is attached to the door frame or the machine case frame, whereby a locking member as the second locking element can be displaced into and out of the pivot range of the turnbuckle.

Abstract: A switchgear cabinet having a rack assembled from a plurality of frame legs bent at the side walls. The rack has open, vertical sides which are closed off by side walls and a rear wall fastened to facing frame legs of the rack. A cabinet door is hingedly connected to vertical frame legs of the rack front against which it is arrested in the closed position. The rear and side walls are covered by corresponding protective walls spaced apart from the rear and side walls and connected to facing vertical frame legs of the rack. The cabinet door is double-walled, an outer door wall of which is spaced apart from an inner door wall thereof and forms receptacle spaces for seals, hinges and locking elements free in the direction of vertical edges of the outer door wall. The protective walls of the side walls have beveled protective wall vertical edges which cover the free space between the protective wall of the rear wall and the receptacle space between the outer door wall and the rack.

Abstract: In order to reduce the residual stresses which occur in the region of a fusion weld of two rail ends (1,2), in order to reduce, in particular to make uniform, the cooling-down rate and--associated with this--the crystallization process within the solidifying weld material, a casting mold is proposed which is equipped with a system of risers (9) and air vents (10) which are designed symmetrically with respect to a longitudinal center plane (5) and a transverse center plane (3) of the welded joint, the risers (9) and the air vents (10) being physically distributed as a function of geometric parameters of the rail foot (8) and of the weld bead (4), and the cross sections of the air vents (10) being dimensioned as a function of the cross sections of the risers (9).

Abstract: Method for intermediate cast type welding of finely pearlitized rails by pouring steels produced by the Thermit fusion process into a casting mold, which surrounds the two rail ends 13 separated from each other by an intrinsic gap L1, wherein the actual rail gap L1 is increased across the entire rail head width 14 starting on both sides of the rolling surfaces 8 of each rail end 13 in longitudinal -h and vertical -v direction by a dimension of 1/10 to 10/10 of the dimension of the intrinsic rail gap L1 to a dimension of L2.

Abstract: Method for raising rail joint welds lying below the traveling surface on railroad tracks by heating the weld by means of an aluminothermic mixture which solidifies after reacting, wherein a) the aluminothermic mixture (21) is used in an amount measured in kilograms equalling from one fifth to one tenth of the weight per meter of the rail (15) measured in kilograms, wherein a1) 30 to 60% of this amount is used to heat the base (10) of the rail in a length of 150 to 300 mm (as measured symmetrically with reference to the weld in the longitudinal direction) and a2) the rest of the aluminothermic mixture (21) is used in equal proportions to heat both sides of the rail web (18), b) the aluminothermic mixture (21) is ignited, c) remains on the rail (15) after igniting for a period measured in minutes which corresponds to 0.7 to 1.5 times the number of kilograms of the aluminothermic mixture (21), whereupon d) the reacted and compacted mixture is removed from the base (10) and from the web (18) of the rail.

Abstract: Aluminothermically produced steel is poured into a casting mold which surrounds the two rail ends. A cooling agent is applied to the surfaces of the rail heads of the rail portions adjacent the two casting mold halves. The cooling agent is applied after the molten steel has been poured into the casting mold until the steel has solidified. The cooling agent may be applied until the projecting material and the casting mold halves has been sheared off. A casting mold for carrying out the method includes two casting mold halves which each has a groove for receiving a sealing paste in the inner surfaces thereof facing the rail ends, wherein the groove extends along the outer contour of the casting mold halves.