Abstract: An apparatus for coating paperboard comprising a flame treater, a heater, a coater for applying a thin coating of a water-dispersible polymer, a dryer, and a cooler with an air curtain to keep the heat confined to the hot end of the apparatus.

Abstract: A method and device of treating an irregularly shaped article to prepare the article for painting is provided. The device includes a burner which can produce an adjustable flame tongue which can fit into crevices, openings and other irregular topographical features of an item to be painted or otherwise coated. The burner device further provides means to apply a grafting chemical on a freshly oxidized surface. Further, the invention provides means to colorize treated objects so that they may be recognized as having been treated. In another embodiment, the grafting chemicals may be enhanced with electrolytic solutions such that electrostatic methods of painting may be subsequently employed on the item. In an alternate embodiment, the burner is adapted to spray a powder inside of a generally enclosed flame, and is used in conjunction with chop guns to manufacture glass or carbon fiber preforms.

Abstract: A step of a method applies a coating material to an electric coil of a workpiece. Before, after, or before and after that step, another step directs a first heated gas flow to impinge on the workpiece. An embodiment of apparatus includes first, second, and third mechanisms. The first mechanism directs a first heated gas flow to impinge on the workpiece. The second mechanism applies a coating material to the electric coil. The third mechanism relatively transports the workpiece between the first mechanism and the second mechanism.

Abstract: A process serves for recoating a deactivated catalyst coating of a catalyst for converting harmful constituents from the exhaust gas of an internal combustion engine, particularly in a motor vehicle. In this process, washcoat and/or noble metal compounds are sprayed by means of an aerosol into the catalyst. The noble metal compounds are subsequently brought into their elemental state by means of a reducing medium flowing through the catalyst, after which the washcoat applied is dried by heat treatment or calcination. In an apparatus for carrying out the process, a first line for a carrier gas and a second line for the washcoat and/or the noble metal compounds are provided. The first line is arranged at least partly in a region before the catalyst within the second line and at its ends nearest the catalyst is provided with an atomization device.

Abstract: A method and apparatus for producing a magnetic recording medium in which production of flakes in a film-forming process and the occurrence of arc discharge in the film-forming surface of a substrate are prevented to thereby attain improvement in the quality of the resulting film and in producing efficiency. A web-like substrate is made to run in a vacuum chamber while the substrate is arranged opposite to a sheet-shaped plasma stream. At the same time, a reactive gas is supplied to the plasma stream while an electric field is generated in a direction crossing the plasma stream and the substrate, which are arranged opposite to each other to thereby form a thin film on the plasma stream side surface of the substrate. Accordingly, the production of flakes is prevented, so that the occurrence of arc discharge in the film-forming surface of the substrate is prevented.

Abstract: A method and apparatus for bonding, coating and/or dyeing yarn which impregnates the yarn with a solution containing at least one of a polymer resin, coating or dyestuff dissolved in a flammable solvent/carrier. The solvent/carrier in the impregnated yarn is then ignited to burn away a part of the solvent/carrier from the yarn. A portion of the solvent/carrier remains in the yarn to prevent damage to the yarn. The yarn containing the residual solvent/carrier then is dried at an elevated temperature.

Abstract: A housing for developing latent fingerprints is formed by positioning a thermally stable porous support material in a hollow tubular member and impregnating the support material with a liquid cyanoacrylate which is allowed to cure. The housing can be placed on an end of a portable heating device having sufficient heat to vaporize the cyanoacrylate and project the vapors against an object to be tested for latent fingerprints.

Abstract: A device for developing latent fingerprints is disclosed. The invention has a housing that holds either a pad of steel wool that is impregnated with liquid cyanoacrylate, or a quantity of solid granulated cyanoacrylate. The cyanoacrylate or steel wool is placed around the periphery of the housing. One end of the housing may be tapered to form a connecting tube. This connecting tube is placed on the end of a small propane torch. The torch is used to vaporize the cyanoacrylate in the housing into a vapor, which is then propelled forward from the torch by the velocity of the torch exhaust gases. This vapor is then projected onto the test object, where latent prints will appear within minutes. This invention can be used in any location, including outdoors and does not need a closed environment to work.

Abstract: An impregnating carbonizing process and apparatus which permit reduction in cost of consumable goods and can operate at a reduced cost and a heating and vacuum impregnating operation which requires a very long period of time can be performed on the outside of an expensive high pressure vessel to accomplish rapid carbonization and baking.

Abstract: An impregnating carbonizing process and apparatus which permit reduction in cost of consumable goods and can operate at a reduced cost and a heating and vacuum impregnating operation which requires a very long period of time can be performed on the outside of an expensive high pressure vessel to accomplish rapid carbonization and baking.

Abstract: In an open-atmosphere flame spray gun system for spraying molten particulate material and a method of spray application, an improved eductor mechanism and flame spray gun permits a greater quantity of particulate material to be delivered to the article to be coated. The particulate material entrained in a stream of pressurized conveying air, a stream of pressurized burn/propelling air and a stream of fuel gas are delivered through a plurality of passageways extending through the gun body to a combustion chamber for mixing and ignition. The streams are delivered in concentric annular relationship to the combustion chamber, with the stream of particulate material and conveying air and concentric annular stream of burn/propelling air being directed into the combustion chamber in an outwardly expanding conically-shaped axial cross-section for enhancing the diameter and length of the flame produced by the gun and permitting an increased quantity of particulate material to be melted and delivered for coating.

Abstract: An attachment for supersonic thermal spray equipment by which inert shield gas is directed radially outwardly about the central core of a supersonic, particle-carrying flame to isolate the same from ambient atmosphere. The shield gas is injected tangentially against the inner surface of a constraining tube attached to and extending from the discharge end of the thermal spray gun nozzle, causing the shield gas to assume a helical flow path which persists until after it exits the tube and impacts the work piece. A process using the shielding apparatus with a high-velocity, thermal spray gun and employing oxygen and hydrogen as gases of combustion and inert gas to introduce metal powder, having a narrow particle size distribution and low oxygen content, into the high-velocity combustion gases, produces significantly improved, high-density, low-oxide metal coatings on a substrate.

Abstract: A method and apparatus apply an insulating layer of carbon to individual faces of the continuously rotating mold surface of a wheel and belt type casting machine, utilizing separately controllable and directable soot applicators to selectively vary the heat transfer characteristics of the individual mold surfaces.

Abstract: A method and apparatus for coating a hollow article with at least two coating materials, said method comprising the steps of applying a first coating material to the article and drying or partially curing at least the surface of the first coating before the application of the second material. Thereafter the two coatings may be fully cured together or alternatively the second coating material may be partially cured in readiness to receive a further coating. The preferred curing means is a gas flame.

Abstract: System, apparatus, circuitry and method for improving electrical conductivity of contact between an electrically conductive workpiece and an electrically conductive work carrier while the workpiece is supported on the work carrier prior to moving the workpiece through an electrocoating treatment zone while supported by the work carrier. The workpiece is suspended on the carrier prior to entry into the zone bath, and then carried past a series of electrically conductive wipers during transit on the carrier toward said zone to cause successive contact with each wiper as the workpiece travels thereby. Each wiper is energized with a high voltage from a capacitor discharge power supply prior to contact with said workpiece, and the power supply is discharged from the wiper into said workpiece as a result of contact therebetween during transit of the workpiece past the wiper.

Abstract: The present invention pertains to an equipment adapted to uniformly spread anti-sticking powders, such as talc in an aqueous suspension, on bituminous membranes for water-repellent coverings in the building field. Said equipment comprises a series of rollers on which the membrane runs. During the feed motion the membrane passes through a suspension-applying station and a drying station. Downstream of the suspension-applying station, a flattened jet of compressed air eliminates the liquid in excess and creates a homogeneous liquid film on the membrane. Afterwards, the membrane reaches a rotating drum provided with suitably disposed shaped reliefs which, on the membrane itself, create a homogeneous distribution of the particles suspended in the liquid film.

Abstract: A method of and an apparatus for supplying a powdery material to a workpiece to be processed thereby. According to the method, the powdery material is discharged from a hopper and metered, and then fed into a tube extending in the vicinity of the workpiece. Ultrasonic vibrations are imparted to the tube to supply the powdery material to a portion to be processed of the workpiece while the amount of the supplied powdery material is being detected. The apparatus includes a hopper for storing the powdery material, the hopper having an outlet, a tube extending from the outlet to a position adjacent to the workpiece for conveying the powdery material therethrough, and an ultrasonic vibrating device mounted on the tube for imparting ultrasonic vibrations to the tube, and a device mounted on the tube for detecting the amount of the powdery material supplied through the tube.

Abstract: To improve coating of articles such as dental prostheses by flame hydrolysis, a zone of turbulence is generated at the tip portion of an elongated flame cone by a deflection surface (5, 5') located--with respect to flame projection--beyond holders for the articles and positioned to be impinged by the tip of the flame to be deflected and reflected thereby from the conical form, to cause the flame to swirl about the articles.

Abstract: An apparatus for electrostatic spray coating of the insides of light transmissive lamp envelopes, comprising a stand, a turntable mounted on the stand for receiving pairs of the envelopes, gas burners for preheating the envelopes and burning in the sprayed coating layer and serving as an electrode to ground the envelopes, a dust generator for preparing and homogenizing, with a rotary chopper, the particles of the dust to be sprayed on the envelopes as the coating layer, spray guns with dust conduits connected to an exhaust system for collecting the particles of dust not bound in the layer and made free during spraying. The apparatus further comprises an electrostatic voltage source connected to the nozzles of the spray guns for negatively charging the dust particles so that the particles are electrostatically attracted to the envelopes, and elements to allow cleaning of the apparatus.

Abstract: A build-up spraying apparatus is disclosed which is capable of positionally adjusting the spreading rate of build-up metal powder on an article along the spreading direction to satisfactorily carry out partial or local build-up as well as uniform build-up as desired. The build-up spraying apparatus includes a fluid control device for spreading build-up metal powder having a pair of control gas injection nozzles formed at the both sides of the interior thereof and a control gas switching cycle setting means for supplying two systems of control gas to the fluid control device at a predetermined cycle to positionally control the spreading rate of build-up metal powder in the spreading direction. The apparatus also includes at least one heating burner body for heating build-up metal powder ejected from the fluid control device, the heating burner body being adapted to vary the amount of heat according to the difference in injection rate of build-up metal powder in the spreading direction.

Abstract: A spray apparatus for applying metallic or non-metallic coatings onto workpieces by thermal deposition includes a spray gun for discharging a spray mixture which spray gun is mounted on a riser surrounding the discharge opening of the spray gun and supporting the spray gun at a given distance from the workpiece. The riser is adjustable in length so that the spray gun is supported at a variable distance from the workpiece, and further has a gas admission nozzle mounted thereon for admitting gas under pressure to the interior of said riser. At its remote end adjacent the workpiece, the riser has release passages permitting escape of the gas admitted under pressure to the riser and preventing infiltration of the surrounding fluid.

Abstract: There is provided an improved powder flame spraying apparatus and method having a preheating nozzle in advance of a plurality of final heating nozzles into the converging flame envelopes of the latter of which hardfacing powder is dispensed. This powder is aspirated into a pressurized stream of inert gas at a variable rate readily adjusted between maximum and no-flow by selectively regulating the gas pressure at and/or spaced downstream from the outlet of the powder aspirator. Regulation of the gas pressure is achieved by venting variable quantities of gas to the atmosphere or air to the aspirator outlet as appropriate to provide a desired powder flow and to achieve a desired volume and velocity of gas and powder delivery into the final heating flames.

Abstract: A method and apparatus used to deposit a carbide layer of metal material on blade material. The apparatus comprises a feed means that continuously feeds blade material to a metal deposition means which continuously deposits the metal layer on the blade material. A drive means is adapted to drive the blade material through the metal deposition area.

Abstract: The invention contemplates an elongate extension nozzle attachment for a gas torch whereby flame-spraying of coating-powder material may be applied with precision to the bore of a workpiece. The attachment is detachably securable to conventional torch and/or gas-distributor structure and provides independent flows of (a) carrier gas and powder and (b) combustible-gas mixture to a nozzle which is removably fitted to the discharge end. Provision is made for optional use of one or more flame-shaping discharges of air, inert gas or the like at the discharge end, using a further independent supply system within the attachment.

Abstract: An apparatus for the automated coating of graphite electrodes comprises a carriage shiftable parallel to the coating apparatus between a station in which the graphite electrode is preheated and a station in which the preheated electrode is positioned opposite the coating station onto which the electrode is then gripped between a pair of contacts and rotated at variable speeds while all of the coating and surfaces treatment tools on a carriage flanking the electrode are brought into play successively by reciprocation of the tool carriage alongside the electrode.

Abstract: Seafood pots made of wire mesh netting are prepared for galvanizing by first passing them through an incineration chamber to burn, melt and loosen foreign material thereon, and then passing them through a high pressure liquid spray to remove residual burned matter and loosened foreign material. The pots are then ready to be passed through the steps of the galvanizing process, which includes dipping the pots into heated preflux before they are dipped into molten zinc. An inverted drying chamber bridges the distance between the preflux tank and the zinc kettle, through which the seafood pots are moved by conveyor means to dry the preflux, with drying heat within the chamber being drawn from the tank and the kettle. The seafood pots are vibrated as they are withdrawn from the molten zinc to effect an even coating of zinc on the wire mesh netting thereof.

Abstract: Apparatus and method for rebuilding the internal surface of a cylindrical object, including a mandrel for supporting the object for rotation about its longitudinal axis, and a wire-fed welding torch positionable adjacent to the interior surface of the object. The welding torch is movable axially with respect to the object during the rotation thereof, so as to deposit material about the interior of the object.

Abstract: An apparatus for flamescarfing the surface of a workpiece includes a powder supply device having a powder container connected via a shut-off valve to a powder distributor which is connected via hoses with nozzles mounted on the flamescarfing burner.

Abstract: An apparatus is provided for hard facing by powder flame spraying of inner surfaces of bores of relatively large workpieces difficult to mount rotatably, such as Diesel engine blocks, and the like. The apparatus comprises a stand, a carriage support pivotally and mounted to the stand via a holding mechanism coupled to the stand and adapted to be adjustably inclined and to move vertically between a pair of supporting columns of the stand. A carriage is mounted on the carriage support and has a burner assembly mounted to and extending transversely from the carriage, the burner assembly comprising a burner mounting having a longitudinal member extending therefrom through which powder flame spray material is fed, the member terminating into a nozzle disposed transverse to the longitudinal axis of the longitudinal member. The carriage is slidably mounted on the carriage support and has a mechanism associated therewith for sliding the carriage along the axis of the longitudinal member.

Abstract: A method and apparatus utilized in conjunction with a wire galvanizing apparatus assures a bright finish on the coated wire. This method and apparatus includes passing the wire through a water quenching bath immediately following the emergence of wire from the molten zinc galvanizing bath of a conventional galvanizing apparatus. A pair of pressure pads grips the wire at its entrance to the water quenching bath for substantially sealing the water quenching bath against water leakage into the adjacent molten zinc galvanizing bath. A heating apparatus is directed at the wire prior to its entrance to the pressure pads to assure that the zinc coating is still in a molten condition as the wire enters the water quenching bath.

Abstract: A furnace of autoclave for heat treatment of carbon articles impregnated with a fluid medium, which is provided with a smoke-elimination system including means for supplying clean air under pressure to the closed furnace and exhausting said air through a smoke incinerator or other cleaning means, and means for supplying clean air by suction to the top of the open furnace and exhausting said air through the same cleaning means. Valves are provided to control the admission and draining off of the fluid medium and to determine the course of flow of the air in order to carry out the method of operation.

Abstract: Cylindrical two-piece cans are decorated with thermally curable inks and coatings and are placed on generally horizontally extending pins of a pin-chain conveyor. The cans are then moved through a flame drying chamber to dry the inks and coatings by direct impingement of flame on the can surface. The cans are thereafter moved through a cooling chamber and then are discharged from the pin-chain conveyor which circulates back to the decorator unit to receive newly decorated cans. The pins of the pin-chain conveyor can be at an angle to the horizontal and the pins can have brushes or the like to grip the internal surface of the can. The flame dryer unit consists of gas and air-fed burner heads disposed in one of several different patterns along the path taken by the cans through the flame dryer housing. Flame impinges directly on the can and the can moves through the tunnel at a speed sufficient to prevent heat damage to the can.

Abstract: In a method and an apparatus for depositing metal on a surface of an article, the surface of the article is heated to a state of incipient fusion. During the heating, a light beam is directed at the surface and the light reflectivity of the surface is detected. At the time of incipient fusion, an electrical control signal is created from the light reflections. Metal is deposited on the surface of the article after incipient fusion thereof and control of the deposit of the metal is effected in response to the electrical control signal.

Abstract: Direct-flame apparatus for drying coatings applied to the outer surface of metal cans. The apparatus includes a conveyor adapted to advance the cans in a continuous train through a tunnel having a series of direct-flame assemblies mounted therein, whereby each can in the course of its advance is progressively heated by the assemblies to cause the cans to emerge from the tunnel in a dried state. Each assembly is constituted by a gas-fed burner element and a hood placed thereover, the element emitting a sheet of flame which impinges on the coated surface and is flanked by curtains of air issuing from the hood at a velocity serving to confine the applied heat within a limited sector of the can and to prevent flashing of the coating despite the high temperature of the flame impinging thereon.

Abstract: An attenuation spot filter adapted to extend the light intensity range of usefulness of cameras, particularly television cameras, by attenuating the input light intensity in accordance with reduced iris aperture, comprising an optical element having at its center a thin film coating the density of which decreases in a radially outward direction whereby light attenuation is a minimum at maximum iris aperture and is maximum at minimum iris aperture.The attenuation spot filter is manufactured by a thin film carbon deposit of controlled thickness and diameter onto an optical flat which is, after deposition, coated. The flat is held horizontally for vertical axial rotation about a controlled flame, with the distance between the flame and the flat being cam-controlled and with the flame jet being secured for vertical axial movement with a cam follower. The coating is float-applied for uniformity and the coating material is an alkyd resin and lacquer thinner mixture.

Abstract: A continuous glass ribbon advances from a float forming chamber past a first heat source and into a coating chamber where a surface of the glass ribbon is provided with a pyrolytic oxide coating as a second heat source heats the opposed surface of the glass ribbon. Thereafter the glass ribbon is advanced into an annealing lehr to relieve residual stress in the glass ribbon. The first heat source reduces the heat loss of the ribbon as it advances into the coating chamber to provide a durable pyrolytic oxide coating on the glass ribbon. The second heat source heats the ribbon to minimize or eliminate glass ribbon warpage.

Abstract: The invention relates to a method for the electrostatic covering with a powder layer of successive envelope for lamps. The powder each time to be provided is mixed with a transport gas and supplied to a first envelope to be covered via a duct. In order to terminate the covering operation, the supply of the powder to the transport gas is interrupted while the flow of the transport gas is maintained for cleaning the duct by blowing.

Abstract: Method and apparatus for providing a completely encircling coating of an organic polymeric material on a localized region of a glass container. At a coating station, a glass container is rotated through at least 360 degrees. During the rotation, a material application head furnishes fluid organic polymeric material to the surface of the localized region of the glass container which is to be coated. Stop members hold the application head a fixed distance from the localized region and determine the perimeters of the encircling coating and a doctoring edge of the application head helps form a uniform layer or coating of the organic polymeric material completely encircling the localized region.

Abstract: Apparatus is provided for continuous manufacture of insulated conductors and includes an extruder and an elongated chamber having a first curing section immediately following the extruder and a second cooling section following the first section. Both sections are substantially filled with a same liquid medium which remains liquid under both curing and cooling conditions. Means are provided for continuously advancing an electric conductor through the extruder wherein a coat of a curable insulating material is applied thereon and then into and through the chamber filled with the liquid medium. The apparatus further includes means for maintaining the liquid medium in the chamber under sufficient pressure to produce void free insulation, and means for maintaining the liquid medium in the first section of the chamber at a temperature at which the insulating material is cured, and in the second section of the chamber at a cooler temperature to cool the cured insulating material.

Abstract: In a method and an apparatus for depositing metal on a surface of an article, the surface of the article is heated to a state of incipient fusion. During the heating, a light beam is directed at the surface and the light reflectivity of the surface is detected. At the time of incipient fusion, an electrical control signal is created from the light reflections. Metal is deposited on the surface of the article after incipient fusion thereof and control of the deposit of the metal is effected in response to the electrical control signal.

Abstract: A process for preparation of an activated or sensitized polyimide polymer, deposition of various catalysts on the sensitized polymer and subsequent plating on said sensitized and catalyzed surface of a metal, e. g., nickel, cobalt, copper, or gold from an electroless bath; improved adhesion, avoidance of blistering, etc. are observed; the process is capable of producing useful printed circuits such as for mounting integrated circuit chips.