Abstract: A process is disclosed for applying a thick inset of an antifriction or a thermosetting resin on a metallic surface, comprising the steps of forming a set of parallel and adjoining grooves on said metallic surface, jumping-up alternately the intergroove ridges in order to extend the anchorage surface for the resin and sintering the resin, such as Teflon, on the metallic surface which has been so prepared.

Abstract: A process for preparing a polyester fiber composite material having an excellent bonding property to rubber, a proper softness and a high resistance to fatigue, comprises the steps of first impregnating a polyester fiber material much as fabric, cord or thread, with a first treating liquid containing (A) a polyepoxide compound having two or more epoxy groups per molecule of the compound, (B) a blocked polyisocyanate compound, for example, an addition product of a polyisocyanate compound with a phenol, tertiary alcohol or aromatic secondary amine compound and (C) a rubber latex such as vinyl pyridine-styrene-butadiene terpolymer latex; first drying and heat treating the first impregnated material at a temperature of, preferably, 180.degree. C.

Abstract: A process for refinishing the surface of a body of acrylo-butadiene-styrene (ABS) polymer by applying to the surface a coating material and treating the body with a solvent. The surface is cooled, together with at least the material underlying the surface, to a temperature in the range about 32.degree. F. to 40.degree. F. The surface of the body is then contacted with a solvent vapor for a time sufficient to reflow the surface but not to warm appreciably the inner layer of the body. The process avoids distortion in the refinished surface.

Abstract: One side surface of a strip of metal is contacted with a surface of a molten metal bath which is locally raised under ultrasonic vibration whereby a continuous coating is attained on one side only.A tool for imparting the ultrasonic vibration to a bath is immersed near the bath surface and the ultrasonic vibrator connected to the tool is contained in hollow holding means dipped in the bath.In accordance with the apparatus of the present invention, the worn tool can be exchanged for a short time and the molten metallic coating on one side only of the strip of metal can be attained for a long time.

Abstract: It has been found that thin oriented polypropylene film can be coated with a submicron thickness of an alkali metal silicate. The thus coated film gives excellent results when used to separate the negative from the liquid photopolymer in preparing plastic printing plates.

Abstract: An apparatus for recoating a thermoplastic surface with a thermoplastic material which comprises means for continuously supplying thermoplastic material in a solid state, heating and spreading means for coating said thermoplastic material in a molten state on said thermoplastic surface to be coated, said heating and spreading means comprising a metallic heating body having heating resistor means and at least one transversing passageway for said thermoplastic material, said passageway having an inlet for introducing said thermoplastic material in a solid state and an opposite outlet, and a projection found on said heating and spreading means at the outlet for spreading said molten thermoplastic material, said projection leaving a contoured contacting surface extending at an angle to said passageway for contacting the surface to be recoated.

Abstract: A process of producing a liquid image, wherein an insulating material bearing an electrostatic charge pattern detectable at its surface is developed by wetting with a developing liquid according to such charge pattern and in which process developing liquid is brought substantially uniformly in close proximity to or in contact with the material with at least two developing liquid applicator means, which are disposed in succession along the path followed by the material and which supply developing liquid to the material in such a way that the liquid image is gradually built up by amounts of liquid offered by such successive applicator means.

Abstract: A fabric of amorphous silica is provided having greatly improved life for bag collectors at high temperatures. This is accomplished by applying a thin coating of gold on the amorphous silica fibers of which the fabric is made. The gold is non-reactive at high temperature and has sufficient lubricity to lubricate the fibers and prevent abrasion of adjacent fibers by each other. The gold coating additionally helps protect the amorphous silica fibers from devitrification. An additional coating of indium may also be applied to form a liquid film at high temperature for increased lubrication. The coating may be applied by dipping or spraying the fabric.

Abstract: Described is a one package adhesive stable at ambient temperature and pressure comprising;a. a liquid phase comprising a polymerizable epoxy resin in the liquid state, an organic plasticizer capable of solubilizing the epoxy resin in an amount sufficient to impart flow to the adhesive;b. a solid phase comprising a carboxy reactive polyvinyl chloride and an effective catalytic amount of the reaction product of a saturated aliphatic polyamine and a saturated aliphatic carboxylic acid or anhydride or an aromatic or cycloaliphatic acid or anhydride. The one package adhesive is capable of being stable for long periods of time without curing thereof and is useful as an adhesive for securing metallic substrates.

Abstract: A method of making the cathode of a diode image intensifier tube by evaporating some alkali metals and antimony on to the inner surface of a cathode window which by means of a layer of frit is joined to a metallic cathode flange, and in which there is provided between the cathode and the cathode flange, or, as the case may be, the cathode housing, an electrical resistance of a pre-determined value such that at light levels at which there is a danger of the anode being burnt, the diode image intensifier tube is defocussed or cut off, and wherein prior to the evaporation of the metals an alkali-resistant and insulating layer is applied to the frit layer, and that the evaporation of the antimony is carried out so that there is formed between the cathode and the cathode flange an area extending around the cathode and where no antimony is present, and that at least one galvanic connection is passed vacuum-tight outside the diode image intensifier tube, and one end of said connection is arranged at the place of the

Abstract: A composition for coating a metal-working tool to increase tool life, comprising graphite, molybdenum disulphide or other solid lubricant in an aqueous binder solution comprising a phosphate of aluminium, magnesium, zinc, calcium or other metal and preferably a chromate or dichromate as well.

Abstract: The object of the present invention is an improvement in chromizing methods, constituted by a method of chromizing steels to a depth e greater than 30 microns, usable for steels with a carbon content of at least 0.2%, especially for steels for construction work and steels for tools, characterized by the combination of three successive treatments, the first of these three treatments consisting of an ionic nitriding of a surface layer between 100 and 350 microns thick, this ionic nitriding being realized in an atmosphere constituted by a mixture of nitrogen and hydrogen, at a temperature of between 450.degree. C. and 650.degree. C., for between 5 and 40 hours, so as to obtain between 1.5% and 2.5% nitrogen in the nitrided layer, the second of these treatments consisting of a chromizing by gaseous method forming chromium carbides, lasting between 5 and 30 hours, and realized at temperatures of between 850.degree. C. and 1,100.degree. C.

Abstract: An improved method for manufacturing a composite metal wire including a core metal wire having extruded therearound a coating metal layer which is different in material from the core metal wire, includes feeding the coating metal into a narrow passageway which is defined between a circumferential groove formed on the outer edge of a rotary wheel and a close fitting surface of a fixed shoe block, carrying the coating metal towards an outlet end of the passageway by frictional drag with the surface of the passageway in accordance with the rotation of the wheel, and passing a core metal wire harder in material than the coating metal through a covering chamber of a larger cross sectional area which is provided with a die and a nipple at the front and rear portions, respectively, whereby the core metal wire is covered with the coating metal in the covering chamber so that a predetermined construction of a composite metal wire is extruded through the die.

Abstract: A method of forming steel reinforcing bars and other bar mill products with a protective coating of nickel to enhance the corrosion resistant characteristics of such bars, such method comprising the steps of forming an elongated steel billet with a generally rectangular cross-section, then electroplating a thin layer of nickel onto said steel billet, painting the exterior surface of said plated steel billet with a slurry consisting essentially of water and a refractory mortar, arranging a plurality of such steel billets in contiguous relationship in a furnace and heating them to a temperature at which they become malleable (approximately 2150.degree.-2350.degree. F.), then hot rolling the steel billets to form them into elongated generally round bars.

Abstract: A laminating device for the application of coating to sheet material includes a doctor blade and a bearing surface between which the material to be coated is passed. The bearing surface has a convex curvature whereby the area of the contact zone between the sheet material and bearing surface is minimized. Means is also provided for horizontal and vertical adjustment of the bearing surface.

Abstract: A ferrous based substrate is diffusion coated by contacting the substrate with a molten alloy bath consisting essentially of lead and chromium, wherein the quantity of chromium is less than 0.85% of the weight of the lead.

Abstract: A method of treating the surface of a shaped article of a polycarbonate resin, which comprises coating the shaped article of the polycarbonate resin with a specific pre-treating solution (I), air-drying the coated article, then coating the article with a specific coating composition (II), and heat-curing the coated article. The pre-treating solution (I) contains a bisphenol type epoxy resin in a mixed solvent of a lower alcohol and an alkyl ether of ethylene glycol, and the coating composition (II) comprises (A) a reaction mixture of an aminoalkylalkoxy silane of the formula (1) with an epoxyalkylalkoxy silane of the formula (2); (B) a mixture of an alkyl-modified methylol melamine of the formula (3) with an alkyd resin; and (C) an acrylic acid derivative of the formula (5) or its polymer of a low degree of polymerization, the formulas (1), (2), (3) and (5) being given in the claim.

Abstract: A process for forming a protective metal diffusion coating on a metal or metal alloy workpiece including internal cavity surfaces, comprises coating the workpiece with a slurry in acetone and cellulose acetate of a powder of average grain size of 0.5.mu. to 10.mu., including aluminum and possibly chromium and/or a small quantity of cerium or yttrium hydride and heating the workpiece in a non-oxidizing environment to dissociate the hydride and effect diffusion of the metals into the surface of the workpiece.

Abstract: A substrate is plated by a process which includes the steps of catalyzing a substrate by coating its surface with a silver-pyridine complex dissolved in an organic solvent, converting the complex to silver oxide by immersion in a basic solution, and reducing the silver oxide to metallic silver and then electroless plating. When the substrate is copper, the silver oxide is spontaneously converted to a reflective and continuous layer of metallic silver upon immersion in the basic solution. The process as disclosed is used in the manufacture of insulated conductors and cord from nylon filaments.

Abstract: An electrophotographic liquid developing system for overcoming the effect of photoconductor background potential in which during the passage of the image area through the developer unit a constant current source supplies a small current to the development electrode to raise the electrode to a potential of the same polarity as and of a magnitude greater by predetermined amount than that of the average background potential of the image area in a preferred embodiment the constant current source is provided by a small plate mounted in and insulated from the transfer corona housing and having such dimensions as to provide the required current. Preferably, the output of the constant current source is controlled in response to a measurement of the conductivity of the developer.