Abstract: Small decorative plates for ornamental use, in particular for the decoration of textiles having an effective inner layer with at least one metallic layer, and two thermically activatable melt adhesive layers forming the outer layers on both sides.

Abstract: A warning reflector construction is provided comprising a transparent plate having a rear surface opposite a light-entrance surface. The rear surface comprises torus surfaces arranged side-by-side and supporting an outermost reflective layer. The optical axes of the torus surfaces can be arranged at an angle to the perpendicular to the light-entrance surface. The warning reflector can be produced by injection moulding or stamping.

Abstract: A runner to keep snowplows off of a pavement or surface area for the protection of ground markings, comprising an upper portion 12 having a base 1 to be placed on the street surface 21 and upward sloping surfaces 2 and sloping sides 3 and an anchoring portion 5 to be inserted into a corresponding recess in the pavement 20, whereby the longitudinal side walls 6 of the anchoring portion 5 are perpendicular to the base 1 and extend longitudinally beyond the base 1 and the upward sloping surfaces 2 extend below the base 1.

Abstract: A method of producing a multilayer anti-reflection coating with an interference effect for optical purposes, and optical bodies with a multilayer anti-reflection coating is described, of which at least one layer has a low refractive index, at least one other layer has a medium refractive index, and--if necessary--other layers have a high refractive index, and whereby the layer of medium refractive value is produced by depositing a mixture of tantalic oxide and aluminum oxide by means of an electron gun in a vacuum in a reactive atmosphere.

Abstract: An account is given of a process for making separate ornament stones with a heat-activated or thermoplastic adhesive coating, in the case of which a number of ornament stones are adhesively joined to a heat-activated adhesive foil and the single stones, with the heat-activated adhesive foil sticking to them, are freed from the compound structure made up of the separate stones and the foil.With this process single ornament stones may readily and simply be coated with a heat-activated adhesive of a true desired thickness where it is needed on the stones.

Abstract: A retroreflector plate and a method for its manufacture are described.The retroreflector plates consist of a transparent plate with a reflective rear side, the front side of which comprises adjacently disposed, curved light incidence surfaces, and the rear side of which comprises adjacently disposed, curved reflection surfaces, in which case the optical axis of each individual light incidence surface coincides with the optical axis of a respective reflection surface.The retroreflector plates are distinguished by the fact that, when the light incidence surfaces or the reflection surfaces are projected perpendicular and parallel onto the plate surface, as the plane of horizontal projection, the outlines of the reflection surfaces comprise different surface content, when compared with each other and with the light incidence surfaces, or, the outlines of the light incidence surfaces and their respective reflection surfaces substantially comprise the same surface content, while having different contour shapes.

Abstract: A decorative material consisting of decorative elements which are arranged in a pattern on a flat backing is described, said backing consisting of a thin, wide-mesh net on which said decorative elements are arranged with the side bearing said fusion adhesive coating facing towards said backing and said fusion adhesive coating penetrating through the mesh of said backing. In particular, cut paste and small rhinestones are employed as said decorative material.The decorative elements are suitable for many different applications, in particular for adorning and embellishing textiles and articles of clothing.

Abstract: A warning reflector construction is provided comprising a transparent plate having a rear surface opposite a light-entrance surface. The rear surface comprises toric surfaces arranged side-by-side and supporting an outermost reflective layer. The optical axes of the toric surfaces can be arranged at an angle to the perpendicular to the light-entrance surface. The warning reflector can be produced by injection moulding or stamping.

Abstract: A glass mirror film of layered construction is provided. The glass mirror film comprises a pliable glass film having a supporting film secured to one surface by an adhesive layer and a reflective layer disposed on an opposed glass film surface. A gummed layer may be applied over the reflective surface if desired. The glass mirror films are particularly suitable for use in concentrating solar collectors.

Abstract: A glass mirror plate and a method for its production is described. The glass mirror plate is characterised by a layer structure consisting of at least a glass layer, a reflective layer, a gummed layer and a supporting plate. The glass layer can be subdivided into single elements or can consist of a pliable glass film. The glass mirror plates are in particular suitable for concentrating solar collectors.

Abstract: Identification plates are produced by applying retroreflective material upon a male die member and subsequently pressing a plate blank over the retroreflective material to adhere the material to the blank. The blank is then lifted from the male die member and the retroreflective material, in the form of characters to be formed upon the identification plate, has pressure applied thereto to remove air bubbles. The blank is then replaced on the male die member which is formed with male die elements also in the form of the characters to be produced, and by applying a compressive force to the plate blank, an identification plate is formed with indented retroreflective characters devoid of air bubbles or the like.

Abstract: A binocular telescope has a pair of eye-pieces set in threaded mounts and includes a mutual drive for the simultaneous focusing of both eye-pieces, whereby both eye-pieces are connected non-positively with each other via a frictional clutch which slides through when a predetermined limiting torsional movement is exceeded.The binocular telescope combines such advantages of a central drive as, for instance, convenient and accurate setting, along with the advantages of diopter setting, namely accuracy and easy readability.

Abstract: An optical instrument, for example a field-glass, in which the image-erecting system, the eyepiece tube and the objective tube are embedded in synthetic resin to form the housing of the instrument. The image-erecting system and the eyepiece and objective tubes and, if required, the hinge mechanism, are wholly or partially surrounded in cast resin to make a rigid core and this rigid core is partially or wholly enclosed in foamed synthetic resin.

Abstract: A component comprising a plurality of gemstones containing visible faces and seating faces, said gemstones being mounted by their seating faces in a given arrangement and with a given mutual spacing therebetween in respective recesses in a support, said support being a continuous foil of fusion adhesive. The component is made in an apparatus that includes a plate with a heating chamber on one side and a vacuum chamber on the other. The stones are arranged in recesses on the plate with their seating faces outward, a sheet of adhesive foil (transparent or colored) is positioned thereover, heated into a thermoplastic state and drawn down by vacuum to surround and adhere to the seating faces. The component (foil with stones affixed) is then placed in a recessed jewelry setting with each stone in a recess, and again heated to fuse the foil to the setting.

Abstract: A process is disclosed for the production of lead carbonate by treatment of fluorine-containing mud produced in the polishing of lead glass with etching acid comprising:A. separating said mud from the etching acid;B. reacting the same with an aqueous alkali carbonate solution and filtering the solution;C. dissolving the residue in nitric acid and precipitating the fluorides in the form of alkali hexafluorosilicates by the addition of alkali ions at a pH of the solution under 4 and filtering out the precipitate; andD. adjusting the pH of the resulting solution to above 6.5 by the addition of alkali carbonate to the solution to precipitate basic lead carbonate.

Abstract: A process of forming molded bodies is provided in which precisely formed surfaces thereof have a precise interval therebetween. Such bodies are formed in a mold in which a first set of forming dies engage an interposed plastic mass of glass or the like, whereafter at least one auxiliary forming die enters the mold to engage and form the yet plastic mass. The first set of forming dies define critical surfaces and have a fixed interval therebetween following engagement with the plastic mass. The auxiliary die defines a non-critical surface on the body to be formed in the mold and enters the mold a distance determined by the mass of the plastic body.In a modified process of manufacture, the mold has an offset portion and is movable relative to the first forming dies whereby the mold cavity in which the plastic mass is disposed is reduced in volume and the desired body is formed having critical surfaces formed by the first forming dies.

Abstract: A reflex light reflector sheet is disclosed wherein both the front face and the rear face are provided with a plurality of juxtaposed convex lens surfaces, the rear face being covered by a mirror surface. In accordance with the inventionA. the lens surfaces of said front face are aspherical;B. the respective axes of the lens surfaces on said front and rear faces coincide, andC. the focal point of the lens which is defined by each lens surface on said front face for axially incident lights is located in or in the proximity of the associated lens surface on the rear face.A method for preparing such a reflex light reflector sheet is also disclosed. A plastic sheet is treated so as to render the sheet susceptible to surface deformation. The sheet is then passed through the nip of patterning rollers which rotate synchronously in opposite direction, the patterning rollers having surface patterns which are complementary to the lens surfaces.

Abstract: Jewel-studded components are formed of a planar holder or carrier made up of rings joined together by webs with the back surfaces of stones secured into the rings by soldering or by an adhesive. The thickness of the holder is only a fraction of the height of the back surface of the stones. The rings are sized to receive the shape and size of the stones so that different size stones can be fitted into the holder. The holder can be formed from a thin metal plate and the webs are flexible and deformable. Further, the holder can be provided with support surfaces, laterally adjacent the rings, on which contrasting small sized articles, such as granules or floccules, are deposited.