Abstract: Technique for making exhaust muffler lining comprising mineral fibers with metal fibers distributed therein toward the inner surface of the lining, the metal fibers being bound by the fiber binder carried by the mineral fibers.

Abstract: Method and apparatus are disclosed providing both for separation of the components of a toration fiberizing center, including separation of both the glass stream supply means and of the secondary or carrier jet from the blast, and at the same time further providing for stabilization of the feed of the glass into the system, notwithstanding the separation of the components. This is accomplished by shielding the jet flow from induced air at one side of the jet and introducing the glass stream into the influence of the induced air at the opposite side of the jet.

Abstract: A technique is disclosed for heat treatment of fibrous mats, especially mats formed of mineral fibers such as glass and carrying a heat hardenable binder material, such as a thermosetting resin. The method and the equipment disclosed provide for continuous feed of the mat through a curing or treating oven having a plurality of heat treatment zones or areas. In one form of the method and equipment, the heat treatment in at least one zone is effected by circulation of a heated gas, such as air, through the mat in said zone, and the mat is also subjected to heat treatment in a localized area lying within said zone by passage of a second heated gas through the mat, the second heated gas having a pressure higher than that in the surrounding portions of said zone.

Abstract: A well screen and method for its manufacture are disclosed. The well screen is assembled from molded parts. The parts are initially formed with a continuous, imperforate outer skin. Continuous circumferential slots are cut in the skin to form a foraminous screen. Integrally formed annular ribs located between each slot provide crush resistance.

Abstract: A process and apparatus for controlling the operating conditions, particularly the temperature and pressure, of attenuating gas employed in the fiberization of thermoplastic materials. The arrangement disclosed provides for temperature and pressure controls of the hot attenuating gas blast used in connection with a centrifugal or spinner type of technique for making fibers from thermoplastic mineral materials such as glass.

Abstract: A method for the continuous fabrication of blankets or sheets of expanded phenolic resin displaying a hard skin on each of their sides, according to which a mixture, comprising in particular a resole resin, a blowing agent and a hardening catalyst is placed on an essentially flat surface of a moving conveyor, is completely expanded, and is conformed eventually between two parallel surfaces entrained in the same direction, the second surface being located above and substantially parallel to and able to move at the same speed as the moving surface, characterized in that, in a first stage, after having been distributed at the surrounding temperature and in the liquid state along the whole width of the surface of the transport component, in such a way so as to comprise a blanket of expandable liquid mixture essentially uniform in thickness, the expandable mixture is conveyed in the open air towards the conformation surfaces while being submitted to a heating so that it expands, the degree of heating and the lengt

Abstract: Multiple jet fiber attenuation, the jets converging to provoke mutual impact and create a combined jet flow, the jets comprising fuel and comburent components in proportions providing a combustible mixture in the combined jet flow, a stream of attenuable material being delivered into the combined jet flow and providing for ignition of the combustible mixture in a localized zone and thus for attenuation at elevated temperature in said zone.

Abstract: Hydraulic bolt tightening means comprises a body, a piston mounted in the body, the piston and the body being of generally annular configuration to allow the device to be assembled in encircling fashion to a bolt or like components, and an annular chamber between the body and the piston for the admission of fluid under pressure to effect relative axial displacement of the body and the piston whereby the axial dimension is increased, the piston comprising an inner part having a pressure area which is subject to the pressure in said chamber and an outer part to which the fluid pressure is transmitted via said inner part and an interposed mass of solid, yielding and substantially incompressible material whose effective pressure area is less than that of said inner piston part whereby, in use, said mass is caused to expand radially so as to seal against leakage of fluid from the chamber while at the same time transmitting the pressure to the outer piston part.

Abstract: A plastic sheet is laminated to a glass sheet for the manufacture of laminated safety glass by means of an elastic membrane rigidly held at its periphery and subjected to increasing gas pressure, the membrane thereby pressing the plastic sheet against the glass sheet progressively from the center out toward the edges of the latter.

Abstract: A demountable bottom opening, foldable and reusable container for finely divided materials such as chopped glass fiber strands and other bulk, flowable materials is disclosed. The container is adapted to be mounted on a permanent pallet of great rigidity. The pallet is comprised of a skeletal base frame on which is mounted a shallow crown which receives and supports the container. The crown surrounds a central opening which is closed by hinged hexagonally-shaped flaps locked in position when the loaded containers are stored or transported. The flaps are unlocked to swing down to the sides of the opening so that they do not interfere with unloading of the container thereby insuring complete emptying. The use of an impervious foldable sleeve extending from the opening in the container and which unfolds to serve as a funnel through which the material is unloaded into a hopper beneath the pallet is also disclosed.

Abstract: The present invention relates to a system for use in monitoring a biological signal from a patient while an electro-surgical appliance which applies a high r.f. voltage, is being simultaneously used. The signals from a number of transducers are transmitted to an amplifier preferably an ECG amplifier with an input-filter. The amplifier is situated in a Faraday cage which is connected to one of the transducers. The filter is a screened HF-filter and the filter together with the Faraday cage is enclosed in an earth connected grounded container or screen. As a result radiation from the Faraday cage is substantially eliminated.

Abstract: A glass fiber sizing composition for the reinforcement of resin matrices which comprises one or more adhesive agents, non-ionic lubricants, organo-silanes, and cationic lubricants as well as a coadhesive such as gelatin, another silane or some sort of glass-resin binding agent and demineralized water as a complement. The organo-silanes are from the group comprising the organo-silanes containing an organic chain of the polyazamide type and the organo-silanes whose organic chain contains at least one phenyl radical and at least two secondary or tertiary amine groups. The addition of the organo-silanes to the sizing composition improves the tensile strength of the sized strands. These organo-silanes are good organic glass-resin binding agents and their presence decreases the risk of rupture of the strands during the winding operation.

Abstract: Aqueous compositions for the coating of glass fibers used particularly for textiles, a method of applying these compositions to the fibers, and the fibers themselves are disclosed. The aqueous compositions comprise at least one starch, a non-ionic lubricant, a cationic lubricant, emulsifier and at least one organo-silane from the group made up of the organo-silanes comprising an organic chain of the polyazamide type and of the organo-silanes whose organic chain contains at least one phenyl radical and at least one secondary or tertiary amine group.

Abstract: Impregnated or coated linear material, for example, coated glass fibers, are dried in one or more calibrated spaces which control the percentage of impregnate or coating. A sweeping device moves the material laterally assuring complete sweeping and hence self-cleaning of the calibrated spaces.

Abstract: A modified phenol formaldehyde condensate is reacted with boric acid and cured in the presence of a polyfunctional nitrogeneous compound to provide a binder for mineral wool fibers which is particularly suited for thermal insulation products intended for high temperature service.

Abstract: Method and apparatus for controlling and particularly for reducing the retention rates of viscous impregnate or coating materials on fibers, strands or textile ribbons are disclosed. The impregnated or coated material is submitted to successions of compressions and decompressions. Drainage of the viscous material is effected in the decompression intervals which separate the compression intervals.

Abstract: A two-cycle internal combustion engine having reed-type intake valving, and especially configured and positioned intake and injector porting, with the porting constructed and arranged to improve various of the operating characteristics of the engine, and particularly adapted to increase the effectiveness of the injection through the injector porting.

Abstract: A safety window comprises at least one sheet of glass, which may be tempered, and, on the side thereof facing a interior of the vehicle in which the window is to be mounted, a sheet of transparent plastic material bonded adhesively thereto, the plastic material possessing a high capacity of elastic deformation, a modulus of elasticity below 2,000 daN/cm.sup.2 and an elongation to rupture in excess of 60% with less than 2% plastic deformation, the plastic material having self-healing properties and capable of protecting occupants of the vehicle from being cut if said sheet of glass is broken.

Abstract: Methods and equipment are disclosed for production of mineral fibers, by attenuation, involving the use of a substantial volume of gas, in which water is also employed at least in a fiber binder, the methods and equipment providing for recirculation of most of the gases, and preferably also of the water employed in the system. Both the gases and the water are purified and the pollutants are separated and are also treated to convert the pollutant constituents to a form not ecologically objectionable for disposal. The methods and equipment also minimize discharge of fluids and aural efflux from the plant. Methods and apparatus are also disclosed for controlling and stabilizing various operating conditions of the fiberization; such as the temperature and the pressure in the fiber forming section or chamber.

Abstract: A two-cycle crankcase compression internal combustion engine having extended and specially positioned intake porting and reed-type intake valves, with the porting and valves arranged to improve various of the operating characteristics of the engine.