Abstract: The invention relates to a hydroxylic acrylate copolymer which contains a proportion of copolymerized monomers having at least 2 double bonds, and to the process for the preparation of the acrylate copolymer. The invention also relates to coating agents which contain acid-curable binders, organic solvents and, if appropriate, pigments, fillers and conventional assistants and additives and which contain, as the essential binder, the hydroxylic acrylate copolymer and an alkylated melamine/formaldehyde resin. The invention also relates to coating agents which, as the essential binders, contain the hydroxylic acrylate copolymer in one or more different polyfunctional isocyanates.

Abstract: The invention relates to a soluble, cross-linkable acrylate copolymer which is obtainable by copolymerization of more than 3 to 30% by weight of monomers having at least two polymerizable, olefinically unsaturated double bonds, from 5 to 50% by weight of monomers having a cross-linkable group, with the exception of hydroxyl groups and carboxyl groups, and from 20 to 92% by weight of further monomers having a polymerizable, olefinically unsaturated double bond, the sum of the monomers being 100% by weight. The invention furthermore relates to processes for the preparation of acrylate copolymers and coating agents based on the acrylate copolymers according to the invention.

Abstract: The invention relates to a soluble acrylate copolymer which can be obtained by copolymerization of more than 3 to 30% by weight, based on the total weight of all the monomers, of a monomer with at least 2 polymerizable, olefinically unsaturated double bonds, monomers which carry functional groups and other monomers with a polymerizable double bond, the acid number of the acrylate resin being 15 to 200. The invention furthermore relates to processes for the preparation of the acrylate copolymers and coatings based thereon and based on polyepoxides.

Abstract: The invention relates to a hydroxylic acrylate copolymer which contains a proportion of copolymerized monomers having at least 2 double bonds, and to the process for the preparation of the acrylate copolymer. The invention also relates to coating agents which contains acid-curable binders, organic solvents and, if appropriate, pigments, fillers and conventional assistants and additives and which contain, as the essential binder, the hydroxylic acrylate copolymer and an alkylated melamine/formaldehyde resin. The invention also relates to coating agents which, as the essential binders, contain the hydroxylic acrylate copolymer in one or more different polyfunctional isocyanates.

Abstract: Soluble acrylate copolymer containing carboxyl groups, processes for its preparation and coating agents based on the acrylate copolymer.The invention relates to a a soluble acrylate copolymer which can be obtained by copolymerization of more than 3 to 30% by weight, based on the total weight of all the monomers, of a monomer with at least 2 polymerizable, olefinically unsaturated double bonds, monomers which carry functional groups and other monomers with a polymerizable double bond, the acid number of the acrylate resin being 15 to 200. The invention furthermore relates to processes for the preparation of the acrylate copolymers and coatings based thereon and based on polyepoxides.

Abstract: A platen assembly, including a cylindrical platen, for advancing a web of record material through a printing device, the record material having perforations along its borders for receiving pins disposed in pin sprocket wheel assemblies mounted on opposite ends of the platen.

Abstract: A guide for directing a print head in a printing device parallel to a platen, the guide being constructed of a unitary extrusion of a metallic material having two guide rails joined by a thin web of material. The structural arrangement of the guide offers a high resistance against bending so that a constant predetermined distance can be maintained between the print head and the platen.

Abstract: To permit color reproduction of signals representing a color image by burning off a metalized layer (2) on an insulating substrate (1, 3), by contacting the metalized layer with an electrode (35) and passing a current pulse through the electrode, the color pattern is placed beneath the metalized layer and comprises groups (17) of colored dots which are essentially hexagonal in shape and positioned closely adjacent each other to form a color dot pattern of beehive appearance. One of the color dot pattern preferably additionally has a characteristic other than color to distinguish it from the others and provide a locating marker; the additional characteristic may, for example, be magnetic particles on the dots to be sensed by an electromagnetic transducer, similar to a tape recorder head, or a difference in reflectivity which can be sensed by an optical transducer.

Abstract: To prevent the formation of scratches, surface discontinuities, slide tracks or striations, for example due to sliding of electrodes (20) over the metal layer (12) of a metalized recording medium, a protective surface coating (13) of low-friction sliding protective material is applied in the form of discontinuous islands over the metal layer (12). The discontinuities permit electrical contact between the electrode (20) and the metal layer (12) although the protective surface coating (13) has insulating properties. The coating (13) may be polymerized hexamethyl-disiloxane, hexafluoropropylene, or Teflon, polymerized, preferably in a hot cathode glow discharge; or a metallic soap. The protective layer is hydrophobic in the form of islands of a thickness of between 10.sup.-9 m to 10.sup.-7 m, preferably about 1 to 2.times.10.sup.-8 m, thus protecting the underlying metal layer (12) against damage by the electrode (20), and attack by moisture or dampness from the ambient atmosphere.

Abstract: A printer tractor position clamp has two substantially parallel arms joined by a member having shape and size to engage a guide shaft and to secure a printer tractor to the shaft. Movement of the two arms towards each other releases the clamp from the guide shaft to permit lateral movement of the tractor along the shaft.

Abstract: To reduce adherence of particles to electrodes and improve the contrast of recording paper, particles of oversized pigments are including in a contrast lacquer or ink layer which have a diameter such that the oversized particles or grains extend out from the lacquer or contrast layer, that is, have a diameter which is greater than the thickness of the ink layer. Suitable particles are carbon black, and calcium carbonate, particularly if darkly colored, present in about 3%-by weight-of the wet content of the lacquer layer which, for example, is a layer of nitrocellulose with finely grained carbon black pigment therein, of a thickness in the order of 1 to 10 .mu.m; the additional oversized pigment granules will have a thickness in the order of about 2 to 20 .mu.m, preferably, on the average, about 5 .mu.m and embedded in lacquer layer of about 2 .mu.m thickness, over which a vapor deposited layer of aluminum of between 0.01 and 0.1 .mu.m is applied. A typical substrate is paper.

Abstract: In a hydro-jet housing the form block, possibly with core, is stripped of mold sand by means of a high-pressure water jet. The sand is fed in the form of a muddy pulp to a first hydrocyclone, where the water is largely separated and is supplied for the formation of new muddy pulp. The sand flows into a scrubbing mechanism for knocking off its binding material, which has settled as a coat around the sand grains. After being scrubbed, the sand is fed to a second hydrocyclone for hydro-extracting water and dislodged binding material from the sand. The sand is then dried and cooled and is available for further use. The contaminated water is neutralized with flue gas, after which a flocculation agent is added to it and the water is then purified for reuse in a settling tank and possibly in a filter.

Abstract: The invention relates to an apparatus for the continuous forming of high density, seamless candies from a strand of confectionary material provided with a viscous filling. Candy blanks are first cut from an incoming soft strand and then pressed into candy pieces of the desired shape. The apparatus includes cooperative complementally formed pairs of separating teeth as well as pairs of members for shaping the candy and stamping chambers arranged in a rotating rotor.

Abstract: The recording carrier is metallized, typically with aluminum. Between the aluminum and the paper is an intermediate layer made of lacquer or printing ink, or both. The aluminum coating has a metallically shiny surface which reduces contrast. To increase contrast upon recording by burning off the aluminum, the surface of the intermediate layer is made matte by an organic additive which, when subject to electrical discharge, burns with little or no residue. The matte surface of the intermediate layer also decreases the gloss or shine of the overall carrier since it will affect the surface characteristics of the aluminum layer thereover.

Abstract: A paper guide extends around the platen of a printing machine and has a flexible extension which bears against the front of the moving printing mechanism included in the printing machine. The close proximity of the paper guide to the printing mechanism of the printing machine serves to guide the paper as closely as possible into the small gap between the printing head and the platen and also to guide the paper as accurately as possible out through the paper-exit opening of the cabinet of the printing machine. Being so closely guided (particularly in the case of multiple sheet carbon set-ups or the joints of fan-fold paper), the leading edge or a fold of the paper is less likely to catch on the ribbon or get caught on the edge of the paper-exit opening of the cabinet. The flexible final guide extends so high up the printing mechanism side of the platen that it actually bears against the printing head and is flexibly deflected by the printing head as the printing head moves across the front of the platen.

Abstract: The invention relates to an apparatus for the continuous forming of high density, seamless candies from a strand of confectionary material provided with a viscous filling. Candy blanks are first cut from an incoming soft strand and then pressed into candy pieces of the desired shape. The apparatus includes cooperative complementally formed pairs of separating teeth as well as pairs of members for shaping the candy and stamping chambers arranged in a rotating rotor.

Abstract: A protective device is provided for the threaded shaft of a machine in which the shaft extends between relatively fixed and movable machine parts in respectively rotary and driving connections. The device comprises a belt which is fixed at one end to the shaft near the fixed machine part, wound round the shaft at the same pitch as the shaft thread, and passed to a rotary member mounted on the movable member. If the shaft is only exposed up to the machine movable part, the rotary member is spring-loaded or driven to serve as a take-up/supply spool. If the shaft continues beyond the movable part, the belt is wound around the remainder of the shaft and connected at its other end to the shaft.

Abstract: An ink supply system for an ink jet recorder wherein ink is emitted by a nozzle and impinges on a sheet of paper. An open-cell-foam-filled container supplies ink to a tube-shaped pump chamber which holds at least enough ink to print one page of copy. The tube is squeezed in such a manner as to deliver ink at a substantially constant pressure to the nozzle, which forms the jet. Ink emitted by the nozzle but not impinging on the paper is returned to the container. A check valve prevents ink from returning from the tube-shaped pump chamber to the foam-filled container except via the nozzle. Release of the squeezed tube draws ink from the foam-filled container into the tube-shaped pump chamber.

Abstract: There is provided a device for carrying flexible cables or pipes from a fixed connection point to a mobile consumer. The device consists of a flexible support tube which may be either formed from a profiled strip would on itself with intermeshing edges, or a corrugated tube. In order to limit the flexibility of the tube to one direction, there are provided a series of spacers keeping a longitudinally continuous zone of the tube at a substantially constant length. The tube can thus only bend by compression or extension of the zone immediately opposite the zone of constant length. The spacers may take various forms such as a continuous strip secured to one surface of the tube, or a series of individual spacers entering formations in the tube. The individual spacers may in fact be individually secured to the tube or they may be carried on a strip.

Abstract: To prevent the formation of scratches, surface discontinuities, slide tracks or striations, for example due to sliding of electrodes (20) over the metal layer (12) of a metalized recording medium, a protective surface coating (13) of low-friction sliding protective material is applied in the form of discontinuous islands over the metal layer (12). The discontinuities permit electrical contact between the electrode (20) and the metal layer (12) although the protective surface coating (13) has insulating properties. The coating (13) may be polymerized hexamethyl-disiloxane, hexafluoropropylene, or Teflon, polymerized, preferably in hot cathode glow discharge; or a metallic soap. The protective layer is hydrophobic in the form of islands of a thickness of between 10.sup.-9 m to 10.sup.-7 m, preferably about 1 to 2.times.10.sup.-8 m, thus protecting the underlying metal layer (12) against damage by the electrode (20), and attack by moisture or dampness from the ambient atmosphere.