Abstract: A thermoplastic molding composition, comprising: A) from 40 to 97.9% by weight of at least one polyether sulfone, B) from 2 to 59.9% by weight of at least one polysulfone, C) from 0.1 to 2% by weight of stearic acid, and also, if appropriate, further additives and auxiliaries, has improved flowability, surface quality, and notched impact resistance, and can be used for the construction of headlamps.

Abstract: The present invention relates to a process for the preparation of polysulfones having a yellowness index according to DIN 6167 of less than 19 and polyether sulfones having a yellowness index according to DIN 6167 of less than 30, wherein the polymerization is carried out in basic, aprotic solvents with the use of a positively conveying stirrer passing close to the wall. The present invention also relates to the polyether sulfones and polysulfones obtainable for the first time by this process and to the use of such polymers for the production of moldings, films, membranes and foams.

Abstract: A gas-filled surge voltage protector with a high current-carrying capacity. The protector has electrode contacts implemented as strip clamps which in the areas of the end electrodes also surround contact rings that are placed on the base part of the end electrodes. The strip clamps are made of tin-plated sheet metal. One end of the metal strip is designed as a contact element.

Abstract: As a reserve series gap for a gas-filled three-electrode diverter, an arrangement is used that consists of two disk-shaped electrodes arranged axially behind one another with the same outer diameter and of an insulating foil arranged between these electrodes, these three parts being held together by means of a shrink tube. When such a reserve series gap is associated with an end electrode of a three-electrode diverter, the reserve series gap can also serve as a movable contact element of an overload path, given an appropriate design of the foot of the end electrode and the outer-lying electrode and upon combination with a fusible pellet.

Abstract: In a three-electrode surge arrester where the center electrode (3) is provided with a connecting wire (6) that projects outward radially and is provided with an outside short-circuit device, the latter consists of a two-arm spring clip (20) whose arms project axially beyond the free ends of the end electrodes and are in contact with the outside peripheral edge of the respective end electrode (1, 2) with a layer of insulating film (21) in between. Spring clip (20) has an roof-shaped arch (24) and is provided with a passage in the area of this arch that serves to secure the spring clip on connecting wire (6) of center electrode (3).

Abstract: To adapt a three-electrode arrester having copper electrodes to high switching capacities (200 Amp a.c. current per discharge gap simultaneously for 11 cycles at 60 Hz), the following measures are provided: The cylindrical end electrodes have a volume of at least 60 mm.sup.3, given a ratio of length (L.sub.2) to diameter (D.sub.2) of less than 2.5; the middle electrode has the shape of a hollow cylinder with end regions of a reduced wall thickness; the middle electrode and the hollow cylindrical insulators are soldered to one another at the front ends.

Abstract: The present invention relates to polyalkylene terephthalate/polycarbonate blends stabilized with carbodiimides as a sheathing material for optical fibres.

Abstract: To achieve a contact with copper electrodes that discharges axially to a slight degree and is especially favorable from a manufacturing standpoint, a gas-filled lightning arrester with a ceramic insulator and copper electrodes is provided having a contact ring which is soldered endwise on an edge of each bowl-shaped copper electrode. The height (h) of the ring is greater than the thickness (D) of the edge of the copper electrode. The contact ring is made of iron or a magnetic, stainless alloy with a coefficient of thermal expansion .alpha.=120'10.sup.'7 /.degree.C.

Abstract: An apparatus for making elongated headed workpieces having a conveyor device for successively transporting elongated workpieces such as wire pieces transversely to their longitudinal axes from one treatment station into at least one treatment station and including a guided conveyor belt assembly to which the workpieces may be clamped by their circumferential surfaces. Two sections, running together and side by side, of two conveyor belts are guided in such a manner between the stations that they remain in immovable contact on both sides with the transported workpieces. At least one of the two conveyor belts is a toothed belt in which the gaps between the teeth take up the workpieces singly.

Abstract: Apparatus for clamping and working wire pieces has two separate rotary shafts (16) of the clamping levers (18 and 20), arranged symmetrically and with the axis of intake of the wire (82) and the direction of upsetting or hammering at right angles to the axes of rotation of the levers and to the axis of the cam shaft (34), the said direction (82) intersecting the said shaft (34) and passing centrally between the two rotary shafts (16), and on the other hand in directly controlling the clamping levers (18 and 20) by frictional connection rising one or more than one cam (32) on the cam shaft (34) and one cam roller (30) for each cam, the said roller (30) being situated on the lever arm (26 or 38) remote from the tools, the frictional connection being provided by a frictional connection maintaining device (54) which keeps the roller (30) in contact with the cam (32).

Abstract: A gas-discharge surge arrester that can be manufactured at a low cost and suitable for automatic bulk processing. The surge arrester includes an insulator which comprises a small ceramic tube. A tin coating is applied to the electrodes, and an annular protective coating is applied to the ceramic insulator having a thickness of at least 1 mm. This protective coating is formed from an acid-resistant and heat-resistant colorant or varnish which is continuous in the axial direction of the surge arrester. The protective coating may form part of the identification of the surge arrester. For example, the identification may be in the form of a reverse imprint in the protective coating. In addition, tin-coated leads can be coupled to the electrodes.

Abstract: An upsetting device for upsetting the ends of elongated workpieces such as wire pieces and the use of such a device in a wire-working nail press. The device includes an upsetting tool moveable forwards and backwards by means of an upsetting carriage. The upsetting tool is separate from the upsetting carriage and mounted to be displaceable in its direction of movement in its own longitudinal guide separately from the carriage guide. The upsetting tool also positively bears against the part of the upsetting carriage which acts on it.

Abstract: A positioning device for arranging elongated workpieces, such as wire pieces which are to be worked up into headed nails, and the use of such a device in a wire-working machine, includes at least one positioning tool for displacing at least one workpiece in its axial direction by a predetermined distance. The tool is a rigid body which is displaceable parallel to its longitudinal direction. The positioning device may include an additional positioning tool to push the workpieces slightly backward, to compensate for any tolerances in the nominal length of the workpieces of each batch of workpieces.

Abstract: A method and apparatus for providing barbed strap coils without a core by means of a ring coiling device (50) that has no winder provides a single clamping device (96), whereby the coiling is interrupted for the placement of a clamp. A guide device (11B) is arranged in front of the clamping device (6) by means of which two strap sections separated by one loop can be pushed toward the clamping device (96) by means of a strap feeding device (38). The two coils are guided outside the interruption in the coiling synchronously and in like phase through the location where the clamps are applied, by a synchronization device (60) in the clamping device (96) which engages slip-free in the two strap sections by means of a member (62). A counter (80) that counts the member movements between two successive clamping steps is coupled with member (162).

Abstract: A plastic covering for the anti-corrosion protection of articles is provided. The plastic covering is particularly directed to the repairing or sealing of plastic envelopes. The plastic covering is constructed from a non-crosslinked meltable plastic compound to which an organic peroxide is added.

Abstract: A method and apparatus for providing barbed strap coils without a core by means of a ring coiling device (50) that has no winder provides a single clamping device (96), whereby the coiling is interrupted for the placement of a clamp. A guide device (11B) is arranged in front of the clamping device (6) by means of which two strap sections separated by the one loop can be pushed toward the clamping device (96) by means of a strap feeding device (38). The two coils are guided outside the interruption in the coiling synchronously and in like phase through the location where the clamps are applied, by a synchronization device (60) in the clamping device (96) which engages slip-free in the two strap sections by means of a member (62). A counter (80) that counts the member movements between two successive clamping steps is coupled with member (162).

Abstract: A filling compound for light waveguide leads and/or light waveguide cables. The filling compound consists of polyglycol and/or polyolefin, fumed silice, and a multi-functional silane compound. Preferably the filling compound comprises approximately 63 and 99 weight percent polyglycol and/or polyolefin, approximately 27 to about 0.5 weight percent finely distributed fumed silica as a filler and approximately 10 to about 0.5 weight percent of a multi-functional silane compound as a crosslinking/coupling component.

Abstract: A straight wire length is bent against a mandrel into an obtuse V-shape and then into a C-shape at a first station, and against another mandrel into an oval shape at a second station. When making the V-shape bend the leading edge of the wire length is thereby contained against perpendicular movement. The wire length is then bent into a C-shape and when it is moved from the first station to the second station the stop is pivoted against the force of the spring by a bar transforming the V-shape to the C-shape. When the emerging C-shaped link clears the support surface of the stop element, the spring returns the stop element to its initial position in the first bending station, against a stop. The surface of the stop element contacting the stop may serve as an electrical contact for process control.

Abstract: The chain links are bent in a single bending station, using a single mandrel. Pieces of wire of a given uniform length are bent into a V-shape between a holder and a suitably shaped recess in the mandrel. A wire feed sleeve and a wire receiving sleeve are disposed opposite one another defining a wire path between the holder and mandrel. Wire guides having guide surfaces guide the wire in its feed path from the feed sleeve to the receiving sleeve. The receiving sleeve has an abutment member provided with a support surface which, with the feed sleeve, prevents the leading and trailing ends of the wire piece from moving in a direction perpendicular to the direction of wire feed during the V shape bend. The two sleeves, each of which is formed together with a bending tool, are then retracted to free the wire ends, and the bending tools are moved perpendicular to the wire feed direction to bend the wire ends around the mandrel into a C-shape.

Abstract: For the reduction of the work function of the electrodes, gas discharge arresters contain an activator which contains, for example, an alkali metal or nickel. Getter materials, for example barium aluminum, serve the purpose of gettering of gases which can arise in the surge voltage arrester during manufacture or during operation. With these substances, the spreads of the minium operating voltage can be maintained small as long as the activator is only moderately heated. For high loads, the activator contains an alkali metal or nickel and, in addition, barium aluminum, whereby tungsten and/or molybdenum is present as the additional substance. An activator of this type guarantees constant values of the minumum operating voltage and a narrow spread of these values even after a high electrical and thermal load. A frequent switching of the maximally permissible current is possible without an interfering alteration of the electrical characteristics.