Abstract: An arrangement for marking articles or workpieces, particularly hot workpieces, such as coils of sheet metal with series of symbols which are individually applied in templates. The latter are in the form of symbols applied in a cylindrical portion and in a flange-like portion of a movable angle ring which is adjustable vertically and sideways. A spray nozzle is associated with each of the portions. The angle ring is connected to a trunnion fixed in an arm which is adjustable vertically and sideways by piston-cylinder units. One piston-cylinder unit is centered in a frame which is movable on a track by driven wheels, and the piston of this unit mounts a lifting table. Another piston-cylinder unit is connected to the aforementioned arm. One vertical spray nozzle is located above the flange-like portion of the angle ring on the outer end of the arm.

Abstract: An apparatus for treating grease-covered rolling mill scale, according to which the rolling mill scale to be treated is weighed, thoroughly mixed with from 10 to 20% by weight of a solvent e.g. a fluorized chlorohydrocarbon, while finely distributing the greases in the thus obtained mixture. The mixture is then added in a continuous manner to a bath containing such solvent, and is distributed therein. The rolling mill scale is then slowly moved out of the solvent containing bath while mixing the rolling mill scale with an oil-free solvent of the above mentioned type passed in counter-current flow to the last mentioned mill scale. The movement of the thus obtained last mentioned mixture is continued while causing the solvent to drip off out of the grease-free rolling mill scale. The rolling mill scale is then heated, and the residual solvent is driven out of the rolling mill scale.

Abstract: An apparatus for non-destructively testing materials by ultrasound and eddy current, which includes an ultrasound material testing device operating in conformity with the electrodynamic converter principle, and also includes an eddy current material testing device. The testing coils of both testing devices are centrally arranged with regard to each other in such a way that the workpiece regions controlled by the testing coils have an at least approximately common central axis. The apparatus furthermore includes a control device which in conformity with the energization of the coil for creating the strong magnetic field for operation of the electrodynamic converter is operable briefly alternately respectively to turn-on and turn-off the respective testing coil of the ultrasound and eddy current material testing device.

Abstract: A method of and device for ultrasonically checking a workpiece while employing an electrodynamic sound converter including a checking head and a coil adapted to be energized to create a magnetic field, according to which during the checking operation the workpiece in a continuous movement relatively is passed by the testing or checking head of the electrodynamic sound converter. The coil for generating the magnetic field is energized by an alternating current or an intermittent or alternating direct current. Furthermore, the electrodynamic sound converter in conformity with the intensity of the magnetization of the coil is switched on and off in such a way that a sound converter is switched on when the magnetization has reached a predetermined value, and is switched off as soon as the magnetization drops below another predetermined value.

Abstract: An apparatus for chip removal and chip receiving when trimming metal bands, which includes an automatically driven and self-controlling winding-up device for tautly winding-up the seam chip cut off from a metal band being trimmed. The apparatus furthermore includes a chip guiding device reciprocable alongside the chip winding-up region for guiding engagement with the chip being fed to the winding-up device.

Abstract: A device for checking materials by means of an electrodynamic converter which includes a magnet and at least one high frequency coil arranged between the core of the magnet and the workpiece. The high frequency coil includes a first section effective with regard to the generation of ultra sound, and a second section which is not effective with regard to the generation of ultra sound. In the first section the individual currents in the windings of the high frequency coil have approximately the same direction while the second section is located outside the magnetic field of the magnet or opposite the workpiece behind a shielding.

Abstract: An electrodynamic sound converter which comprises a magnet adapted to generate a magnetic field and direct same onto the surface of the workpiece to be checked by the electrodynamic sound converter, and which also includes an excitation coil located between the magnet and the workpiece to be checked for generating electromagnetic oscillations. That end of the magnet core of the magnet which faces the workpiece to be checked is so designed that the magnet core decreases in cross section toward its foremost point which is closest to the surface of the workpiece to be checked, the rate of increase increasing in the direction toward the foremost point of the magnet core.

Abstract: A method of introducing aluminum wire into steel melts, and apparatus for practicing the method, according to which the wire is by means of a set of driving rollers withdrawn overhead from a bundle at rest and through a guiding member is introduced into the melt.

Abstract: A large antifriction bearing composed of a plurality of segments for absorbing forces generating axial, radial and pitching forces, in which each of the individual segments is formed by two bearing ring segments. Within the region of the roller path of the large antifriction bearing one bearing ring segment has a cross section of a substantially one-piece T-shaped profile, whereas the other bearing ring segment in cross section is designed as a U-shaped profile partially surrounding the flange of the T-shaped profile. Holding ring segments are detachably connected to the the ends of the two free legs of the U-shaped profile and extend into the region of the web of the T-shaped profile. The bearing ring segments which abut each other and form the large antifriction bearing are guided by runningpath wires inserted into the bearing ring segment and bridging the areas abutting each other.

Abstract: A device for preparing metal sheets for transport wherein the sheets are delivered on a conveyor belt from a shearing region to a stacking region in which the sheets are engaged from above at the discharge end of the conveyor belt and transported longitudinally and deposited on selected ones of tables to build up stacks of sheets. The stacks of sheets are moved laterally by lateral movement of the tables or by laterally extending chains to a lifting station wherein the stacks of sheets are engaged from above by cranes and conveyed thereby to a binding station for binding of the stacks of sheets.

Abstract: A resilient rail connection on railway ties or the like with guiding plates located laterally of and adjacent to the rail. Each of the guiding plates along a section perpendicular to the longitudinal extension of the rail has a first end portion of an upwardly opening angular shape and an oppositely located second end portion for cooperation with a spring element. In fully assembled condition of the rail connection, the angular first end portion of each guiding plate rests in a correspondingly shaped recess arranged in the rail supporting under-structure such as a railway tie while being located remote from the rail, whereas the second end portion of each guiding plate is adjacent the foot portion of the rail and is under preload engaged by the spring element which resiliently rests on the same under-structure as the first end portion and urges the second end portion of the guiding plate upwardly.

Abstract: An elongated unhardened blank is passed between a first pair of rollers where it is conductively heated by supplying current to one of the rollers. Thereafter, the blank is further heated by induction and then passed between a second pair of rollers where it is shaped so as to impart thereto a predetermined cross-sectional configuration. The rollers of the second pair are profiled and the blank is maintained at an elevated temperature by supplying current to one of the rollers. After shaping, the blank is passed between a third pair of rollers. Current is again supplied to one of these rollers. The other roller is of a diameter corresponding to that desired for the finished annular articles and the blank is coiled about this roller. This latter roller is partially immersed in a quenching medium so that the blank is quenched and thereby hardened as it is being coiled. Coiling is continued until the number of convolutions corresponds to the number of annular articles which are to be produced.

Abstract: A tongue-groove connection which includes: a first member having an end face with a groove therein, and a second member having an end face with a part thereof forming a tongue, and engaging the groove of the first member while defining a gap therebetween. Each of the first and second members has cover layer means with a core layer therebetween, while a sealing band is sealingly interposed between the first and second members so as to seal the gap therebetween. The tongue-groove connection also comprises a screw connection by means of which the first member and due to the interlocking engagement of its groove with the tongue of the second member also the latter are connectable to a contruction onto which the tongue-groove connection is to be fastened. The tongue has a guiding surface which during the assembly of the tongue in the groove cooperates with an abutment edge on the groove forming first members for guiding the tongue into the groove.

Abstract: A shearing arrangement for cutting moving bars in which two counter-rotating knife drums are rotatable in shear stands. These stands are spaced from each other and are located on a base plate. They are connected to each other above the knife drums by a disconnectable yoke. Both knife drums are mounted directly in the shear stands which are each of single-piece construction. The shear stands are inserted into the base plate and are connected to the base plate by quick-disconnect couplings. The quick-disconnect couplings between the shear stands and the base plate may be in the form of press rods, and the base plate may have lateral inclined guide surfaces or prisms for the shear stands. The knife drum is connected to its drive by an easily disengageable coupling which has a hydraulically shifted clutch sleeve.

Abstract: Rolling mill scale to be degreased is weighed, thoroughly mixed with from 10 to 20% by weight of a solvent e.g. a fluorized chlorohydrocarbon, while finely distributing the grease in the thus obtained mixture. The mixture is then added in a continuous manner to a bath containing such solvent, and is distributed therein. The rolling mill scale is then slowly moved out of the solvent containing bath while mixing the rolling mill scale with an oil-free solvent of the above mentioned type passed in countercurrent flow to the last mentioned mill scale. The movement of the thus obtained last mentioned mixture is continued while causing the solvent to drip off out of the grease-free rolling mill scale. The rolling mill scale is then heated, and the residual solvent is driven out of the rolling mill scale. Finally, the grease-containing solvent is regenerated by distilling the same, and the oil-free solvent is condensed and fed back to grease-covered rolling mill scale to be degreased.

Abstract: A device for interconnecting longitudinally profiled plates to be covered by foamed material, especially plates with a trapezoidal or corrugated profile, according to which one end of one plate and the start of the next following plate are clamped at a predetermined distance from each other and are held in clamping members forming part of one and the same carriage which is moved along a predetermined path. While the plates are thus being moved first adhesive tapes are applied to the plates across the gap between the plates in the direction of movement of the plates, and subsequently an adhesive tape is applied to the plates over the gap between the plates in a direction transverse to the first adhesive tapes.

Abstract: An arrangement for stacking sheet metal packets to form packet stacks which comprises a transfer device arranged above stacking tables adapted to be lifted and lowered and equipped with sheet metal packet pliers likewise adapted to be lifted and lowered. The arrangement furthermore comprises a roller bed arranged in front of or between the stacking tables and the transfer device. The transfer device or the roller bed are movable in the longitudinal direction thereof.

Abstract: A method of slagging off slag, especially treatment slag, from metal baths, particularly iron baths, in vessels such as crucibles and ladles, by means of a rabble while the vessel is slightly tilted. To this end, a slag-free zone starting at the lifted side of the vessel is created by means of a rinsing gas acting on the bath surface on the lifted side of the vessel so that the slag which originally covered the slag-free zone is partially displaced toward the vessel side opposite the slag-free bath surface. The rabble is then lowered onto the slag-free portion of the metal bath and while engaging the slag from behind, the rabble is pushed so as to force the slag over the vessel rim section opposite the slag-free bath surface.

Abstract: A method of and device for interconnecting individual profiled plates to be connected to each other end-to-end, and a structural connection effected thereby, according to which the plates to be interconnected are aligned in end-to-end relationship and a sheet metal section withdrawn from a roll of sheet metal strip material, or a pre-profiled sheet metal part is placed across the ends to be interconnected of profiled plates whereupon a ram is moved relative to the sheet metal section or profiled sheet metal part to press the sheet metal section or sheet metal part into the profiled portion of the profiled plates and the sheet metal section now profiled or the pre-profiled sheet metal part is connected to the profiled plates.

Abstract: Apparatus for making seam welded tubing of the type comprising a first butt welding machine for joining together by submerged arc welding the adjacent ends of successive lengths of strip to form a continuous strip, a strip storing device for storing the continuous strip and a tube forming and welding machine is provided with a series of roll stands with the roll axes of successive stands offset from each other so that as the strip passes through the stands, it is turned over laterally. A second butt welding machine is then provided after the roll stands and before the strip is fed into the tube forming and welding machine so that the successive lengths of strip are first butt welded together along the joint on one face of the strip and then second welds are made on the other face of the strip so that no further welding is necessary after the tube has been formed and seam welded in the tube forming and welding machine.