Abstract: Disclosed is a casting resin of reduced viscosity based on methacrylic acid esters with a high content of aluminum hydroxide as filler containing a mixture of at least one organosilicon compound with a functional group, at least one silicic acid ester, and at least one organic metallic acid compound of metals of Groups IVB and/or VB of the Periodic Table of the Elements. The functional group of the organosilicon compound is ethylenically unsaturated and bound to the silicon atom either directly or by alkylene groups. The casting resins of the invention have improved working qualities. Plastic objects and moldings manufactured from these resins have decidedly improved use properties.

Abstract: A safety circuit for an electric detonator element connected to two electrical leads and having a subsequently arranged detonable charge. The safety circuit includes an electrical component connected in parallel to the detonator element between the two leads, the electrical component having an initial condition wherein the electrical component is at least substantially electrically non-conductive. The electrical component is responsive to a signal having a voltage value above a maximum ignition voltage value for enabling triggering of a detonator element for being converted from the initial condition thereof to a final condition wherein the electrical component provides a short circuit path in parallel to the detonator element so as to prevent improper initiation of the electrical detonator element.

Abstract: Disclosed is a process for the production of ketoximosilanes and ketoximoalkoxysilanes. Ketoximes are reacted with alkyl trialkoxysilanes in the presence of a catalyst. The reaction is catalyzed by basic compounds which are dissolved or suspended in the ketoxime. The basic compounds that are used are alkali metals and, preferably, the oxides, hydroxides and carbonates of the elements from the 1st and 2nd group and the 3rd sub-group of the Periodic Table of Elements and lanthanides. The process according to the invention prevents the decomposition and explosion that easily occur in the known processes. The ketoximosilanes prepared according to the invention are valuable crosslinking agents for organopolysiloxane compositions.

Abstract: Disclosed is a method for the preparation of 2,6-naphthalene dicarboxylic acid from 2-acyl-6-alkyl naphthalene, especially 2-acetyl-6-methylnaphthalene, by oxidation in two steps with oxygen or air. The catalyst in the first oxidation is based on manganese. The catalyst in the second oxidation is based on cobalt with bromine added. The addition of 6-alkyl-2-naphthoic acid to the reaction in the second oxidation, in portions or in a continuous manner, results in very good yields having high purities.

Abstract: A soil injection agent on an alkali metal silicate basis, containing as gelling agent trialkoxysilanes of the formula R-Si(OR').sub.3, in which R is an aliphatic moiety of 1 to 6 carbon atoms and R' represents equal or different alkyl moieties of 1 to 4 carbon atoms, is adjusted for properties by the addition of acid alkali metal phosphates or ammonium phosphates and/or phosphoric acid. The addition improves the sealing and strengthening action of the gels and permits a reduction of the silane content, without impairing the resistance of the gels to pollutants.

Abstract: A multistage arrangement for countercurrent separation of suspended solids, such as crystals, by means of hydro-cyclone groups connected in series and corresponding pumps and pump wells. For operating with relatively small expenditures with respect to apparatus under high pressures and at high temperatures within a certain, limited temperature range, the hydro-cyclone groups, the pump wells with pumps projecting into the pump wells, and the essential parts or regions of the lines are placed in a common pressure-proof and heat-insulated chamber. In addition, for removing coarser crystallizations and solid particles, an upstream classifier also accommodated in the chamber may be provided. The multistage arrangement can be used in a process for the production of terephthalic acid from dimethyl-terephthalate as the intermediate product, and in a process for the hydrogenation of coal.

Abstract: A safe production of sodium nitro-1,3-propanediol from a reaction solution of nitromethane and paraformaldehyde in methanol by addition of sodium methylate is achieved by evaporative cooling of the methanol; it being possible to maintain reaction temperatures of 35.degree. C. to 50.degree. C.

Abstract: A firing mechanism with safety device for firearms, especially sport and hunting rifles and shotguns, with at least one barrel and a firing pin associated therewith and operable by way of a striker member in that the member is movable into an uncocked position, under the influence of the force of a compressed spring, against the firing pin after a trigger lever locking the striker member in a cocked position has been placed into a release position, and with at least one trigger with an associated rocker arm. In order to secure the firearm against unintended firing of shots due to external impact effects, the striker member is fashioned as a slide and is displaceable in the longitudinal direction from a rearward cocked position into a forward uncocked position.

Abstract: In a cartridge feeding device for a repeating rifle, a magazine well is provided in the breech casing in front of the rear barrel end underneath the rear end. Toward the rear, a guide housing is arranged behind the magazine well, this housing has an opening at the top in a zone behind a breech head of the rifle and, in a rearward half of this opening, two mutually opposed holding lips, the mutual spacing (a) of the latter being somewhat smaller than the case diameter of the cartridge. A loading plate is pivotably mounted in the guide housing, this plate being pivotable upwardly under spring action. The magazine box exhibits at the top an opening extending over its entire length and, in the region of this opening, two mutually opposed magazine lips.

Abstract: A process is disclosed for the continuous embossing of the surface of flexible (i.e., soft-elastic) sheets or lengths of foam material optionally laminated to a synthetic resin film or a flat textile form or facing wherein the sheet of foam material is superficially plasticized by heating and is exposed to an embossing pressure by means of a perforated metallic embossing belt or band in accordance with a desired embossing pattern. The belt is removed after cooling and solidification of the embossed surface of the sheet of foam material.

Abstract: A filling arrangement is equipped with a loading arrangement containing a measuring slider plate and a displacement arrangement guided through a protective wall. The displacement arrangement moves the measuring slider plate backwards and forwards between two end positions; the displacement arrangement has a force transfer arrangement with a push rod guided through the protective wall and connected with the measuring slide place. The force transfer arrangement is driveable in both directions by means of at least one weight. A distribution arrangement for the supply of explosive from explosive containers to the loading arrangement comprises at least one container holder which is tippable by a shaft guided through the protective wall. A horizontally and parallel guided loading plate is pivotable over a delivery arrangement from an entry position at an entry opening in the protective wall into a first end position below the loading arrangement.

Abstract: An instant connector has a synthetic resin housing comprising two blind ducts projecting into the housing from opposite end faces and extending in parallel to each other. A contact blade is arranged in a cavity between the blind ducts. This blade is pivotable about an axis extending in parallel to the end faces and the ends of the blade-project obliquely into the blind ducts. Upon the introduction of wires into the blind ducts, the ends of the contact blade engage these wires. By subsequently pulling the wires apart; i.e., away from each other, the ends of the contact blade burrow through the insulating sheaths of the wires into the wire cores. In this manner, the wires are electrically connected with each other by way of the contact blade.

Abstract: Disclosed is a thermosetting adhesive and sealant composition of:20 to 60 wt. % of carboxyl-group-terminated polyesters with preferably at least two carboxyl groups per molecule, with a glass transition temperature below 20.degree. C.,2 to 12 wt. % of polyoxazolines which contain at least two oxazoline groups per molecule,2 to 40 wt. % of acrylic or methacrylic esters, preferably of polyvalent alcohols, and/or allyl esters of polyvalent carboxylic acids,which can contain preferably peroxides or aliphatic azo compounds as radical formers and, if desired, paraffin and reactive or nonreactive diluents and additives.

Abstract: A firearm including a barrel holder for accommodating interchangeable barrels. A breechblock housing, connected to a stock, includes in a forward zone thereof, a recess having an abutment surface for absorbing recoil forces, with the barrel including a tubular member fixedly connected to a rear end thereof and including an extension fitting into the recess. The tubular member has a relatively large axial length and extends forwardly from a locking mechanism beyond a cartridge chamber of the firearm. The extension is provided at the rear end of the tubular member, and the abutment surface has an undercut portion partially extending over the extension from above. A downwardly projecting second extension is provided at the front end of the tubular member, with the second extension including a locking bolt recess. The breechblock housing extends up to a zone of the second extension and carries, at that location, a locked bolt cooperating with the locked bolt recess.

Abstract: In order to avoid embedding a sensitive component in a resinous potting material, as usual, a prefabricated protective housing is used which includes a prefabricated housing body in which the sensitive component is inserted, initially with a clearance at one end of the component. A deformation zone of the housing body is plastically deformed in order to fix the component in place in an axial direction by clamping. Then an elastically deformable lid is attached to the housing body, this lid maintaining the component radially in contact against a seat. The protective housing is especially suited for use in devices which contain explosives because no dangerous working materials are utilized during the encapsulation or encasement process and, consequently, there is no exudation of aggressive resin ingredients.

Abstract: Unsupported, compressed propellant charge elements of nitrocellulose grains, as well as propellant charges produced from these propellant charge elements are produced by coating the grains with an acrylate resin and shaping the grains into cylindrical elements. The novel propellant charge elements are manufactured practically without concomitant use of binders or adhesives; they have a cylindrical configuration and contain a coaxial, continuous bore. These elements are suitable as building blocks for propellant charges in ammunition, e.g., for machinegun-type cannons. These building blocks can be used in a very simple form economically directly for the manufacturing of such ammunition. These novel charges contain at least three of the novel propellant charge elements; in this connection, the combustion of these charges can be adjusted at will by varying the propellant charge elements in order to obtain optimum combustion properties.

Abstract: A training cartridge includes a metallic cartridge case with a case shoulder and dummy projectile having a gas exhaust opening at its front end. A propellant charge powder chamber of the cartridge case is closed in the forward direction by means of a cup-shaped closure element that is inserted in the cartridge case close to the case shoulder and that bursts or ruptures during firing under the action of the powder gases along predetermined intentional breaking zones. Toward the rear, the powder chamber is sealed by means of a bottom piece inserted in the cartridge case. By placing the intentional opening zones into the interior of the cartridge, danger of injury by the ejected cartridge case is reduced to a minimum.

Abstract: Disclosed is a process for the cleavage of chlorosiloxanes in the gas phase at temperatures between 350 and 1450.degree. C. to form chlorosilanes and silicon dioxide as reaction products. The claimed process is preferably performed in the presence of metallic silicon or ferrosilicon. The procedure can be combined with the large-scale technical production of chlorosilanes by the chlorination or hydrochlorination of silicon. The inventive process makes it possible to perform the chlorination or hydrochlorination of silicon with the formation of chlorosilanes in an increased yield while reducing the formation of by-products.

Abstract: The casings are guided through a supply duct to a sorting roller which possesses an arresting duct with a pin extending axially and, in the same cross-sectional plane, a transit duct. Those casings which arrive with the casing base directed upwardly penetrate into the arresting duct, with the case base resting on the free end of the pin. On subsequent rotation of the sorting roller through 180.degree., the casing falls into the outlet duct with base directed downwardly. Casings, which arrive with base pointing downwardly, run up against the pin and rest on the periphery of the roller until, after 180.degree. rotation of the transit duct, they align with the supply duct and can fall unhindered into the outlet duct. All casings fall into the outlet duct with their base directed downwardly.

Abstract: A container for the storage and shipment of silicon wafers has three parts; namely:(1) a lower box half,(2) an upper box half or a lid which, when joined together, forms an external protective box-like receptacle of the container, and(3) a cassette having ribs defining seats for accommodating the silicon wafers arranged in the interior of the box-like receptacle. The two box halves are closed in a shape-mating, releasable fashion and can be fixedly clamped together with the cassette by restraining action of a lock arrangement. Additional auxiliary ribs are provided at the upper box half to effect a fixed clamping of the cassette and to retain the silicon wafers in the grooves or seats of the cassette. Guide rails are arranged in the box halves to engage the cassette and prevent movement within the box-like receptacle.