Abstract: A soldering technique is provided especially for printed circuit boards wherein a bath of solder assisting fluid such as non-ionic surface active agent is superposed on a bath of solder. In one form, the workpiece is passed through the bath of solder assisting fluid and solder is pumped from the bath of solder to a trough whereat the solder is cascaded onto the workpiece. In another form, the workpiece is passed downwardly through the bath of solder assisting fluid into the bath of solder for the application of solder to the workpiece. Thereafter, the workpiece is withdrawn from the bath of solder through the bath of solder assisting fluid. In both instances, while the workpiece is still within the bath of solder assisting fluid, jets of this fluid are played against the workpiece to control the thickness of the solder which is allowed to remain on the workpiece.

Abstract: Apparatus and method are provided for spraying a fluid through a first nozzle (48), and more particularly to spraying the vapor of a metallic compound onto glass containers (132), and for cleaning the first nozzle (48) without removing the first nozzle (48) and even without stopping the flow of the fluid being sprayed. The apparatus and method include providing a chamber (76) that is juxtaposed to the inlet (62) of the first nozzle (48), providing a second nozzle (52) whose outlet (68) is disposed inside the chamber (76), and spraying a fluid, preferably air, through the second nozzle (52), into the inlet (62) of the first nozzle (48), and through the first nozzle (48).

Abstract: A solution-dropping nozzle device comprising an inner tube of a relatively large diameter which permits a solution to flow down therethrough, and a plurality of outer tubes of a relatively small diameter adapted for supplying a cleaning solvent to the lower end part of the inner tube, the outer tubes having at least the lower end parts thereof tight-fitted on an outer circumferential portion of the inner tube so as to enclose the same continuously. The outer tubes may have the lower ends thereof positioned higher than the lower end of the inner tube.The nozzle device is free from the concentration of a dropping solution at the nozzle end part, and the eduction of a solute thereof.

Abstract: A body of steel heated to a high temperature of at least 300.degree. C., e.g. a slab coming from a hot-rolling stage, is marked with alphanumerical characters by training a jet of molten metallic material, preferably consisting at least predominantly of aluminum or copper, onto a face of that body from a nozzle which is two-dimensionally displaceable parallel to that face under the control of a programmable microprocessor. The nozzle is part of a working head to which the marking material is fed in the form of a wire whose leading end is atomized by an electric arc generated between that end and an adjoining counterelectrode. The working head is mounted on a carriage movable toward and away from the steel body to be marked.

Abstract: A system for spray coating a substrate such as a plastic container with a gas barrier coating of a polymer dispersion. The system includes a spray coating booth or chamber including spray nozzles dispensing a spray of a coating material onto the surface of a series of containers continuously moving into and out of the coating chamber, an oven for drying the wet coating to remove the water from the coating to form a dried film on the container without distorting the container, and a conveyor for transferring the containers into the coating booth into proximity to the spray nozzles such that on actuation of the nozzles a stream of coating material coats the surface of the bottles with a wet coating layer and, thereafter, to the oven where the wet coating is dried. Means are provided for rotating the bottles during coating, during transport between the spray coating booth and the oven, and while in the oven.

Abstract: An orifice plate cleaning system having a source of solvent, an elongate orifice plate having a plurality of orifices therethrough and an elongate plate face composed of a solvent-wettable material and oriented to be inclined downwardly from the horizontal, and a solvent conduit for depositing solvent at an upper end of the plate face so that solvent flows downwardly by gravity to wet the plate face completely and remove dried ink deposits therefrom. The system includes a vacuum tube adjacent a lower end of the plate face to remove the solvent containing dissolved ink from it.

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 device for preventing trailing of glue extruded by an exclusion nozzle following termination of the dispensing of the glue. A pair of spaced apart orifices are positioned to direct a thin jet of air for a brief period of time on either side of the stream of glue being dispensed at the moment of glue cut-off to momentarily entrain the stream and draw it generally in the direction of the path of travel of the workpiece. The air jets are oriented so as not to touch or impinge on the glue stream, thereby preventing break-up of the glue stream.

Abstract: A closed loop method and apparatus is disclosed for spray processing an article such as alodine processing of aluminum. The apparatus includes valved supply and return piping connecting a processing tank with the article therein to a plurality of supply tanks each containing a liquid that is different from the liquid in the other tanks. The valves and two pumps are preferably computer controlled for initiating major steps by circulating liquids from one supply tank at a time through the processing tank for return to the same supply tank. Each major step is followed by an air purging step of at least the return piping for returning sbstantially all flowable liquid into the supply tank from which it originated thereby minimizing contamination of the other liquids. Other apparatus cleans the air of toxic fluids with the environmentally safe air discharged to the atmosphere and the toxic liquids separated into two groups for reuse.

Abstract: A mechanism for cleaning the discharge opening lips of a coating control nozzle by controlled movement of a plurality of brushes transversely along the nozzle lips. A carriage is mounted on a support frame and is moved along the frame by a rodless cylinder. A plurality of brushes rotated by air motors are mounted on the carriage and are moved along the nozzle lips for cleaning by the carriage. The brushes are mounted on one end of a bellcrank which is attached to the carriage and are pivotally moved into and out of engagement with the nozzle lips by a fluid actuated cylinder mounted on the carriage. One of the brushes engages and cleans the inside surfaces of both nozzle lips simultaneously with two pairs of brushes which clean the outside surfaces of both lips as the carriage moves the brushes transversely along the nozzle opening. A stop is engaged by the bellcrank to limit the pivotal movement of the bellcrank to position the brushes with respect to the nozzle lips.

Abstract: An adhesive applicator for applying an air-curable adhesive to sheets of paper has a nozzle that normally is located in a storage position with the end of the nozzle inserted into a liquid in a sump. This prevents adhesive material in the end of the nozzle from drying out or caking and thereby clogging the end of the nozzle. When the nozzle is to be used for applying adhesive, the nozzle is lifted out of the sump, the sump is pivoted away from the nozzle, and the nozzle is then moved into an operating position for applying the adhesive.

Abstract: A gluing head comprises a valve which intermittently allows the delivery of glue to an ejection port for application to sheet material which moves relative to the head. The head is provided, downstream of the ejection port in the direction of relative motion, with a stepped recess and a low pressure source is coupled to the recess whereby glue threads formed upon the discontinuance of the delivery of glue to the ejection port will be drawn upwardly away from the sheet material.

Abstract: A source for producing a spray of drops and ions of a liquid material under the action of an electric field, comprises an emitting point in the shape of a cone with a rounded tip, the vertex angle of which is between thirty and forty degrees and which projects beyond a base structure by a distance of between some one and three millimeters, means for supplying a liquid material to be sprayed to the emitting point and a field generating electrode whereby there may be applied to the emitting point an electric field sufficient to disrupt the liquid material at the emitting point and provide a spray of liquid drops and ions, the emitting point being made of a material which is wetted by the liquid material and has a low solubility in the liquid material.

Abstract: A nozzle for directing a flow of lubricant particles vertically downwardly onto the surface of a disc moving horizontally across the discharge opening of the nozzle includes a pair of side plates which are secured together by end plates to form an enclosure having a narrow discharge opening at the bottom edge. The side plates are substantially in the form of isoceles trapezoids having a bottom edge wider than its top edge and having the end plates extending between the nonparallel edges of the side plates. An inlet port is connected to the top edges of the plates. The side plates have on their inner surfaces adjacent their bottom edges a groove which extends along the bottom edges to the end plates. The grooves are adapted to catch any lubricant which flows down the inner surfaces of the side plates and direct such lubricant to the ends of the discharge opening where the lubricant can drip from the nozzle.

Abstract: The present invention relates to a rotary coating apparatus wherein liquid to be applied (diffusion agent, photo resist, and others) is dropped through a nozzle on a rotating glass plate or semiconductor wafer seated on top of a spindle to form coatings over their surfaces and a cap is fitted on the lower surface of the nozzle when not in use to provide sealing so that the space enclosed with said nozzle and said cap is filled with solvent vapor.

Abstract: A recovery system for solvent used to clean coating material from a multiple-color coating material dispensing system which undergoes frequent color changes includes a vacuum source over the recovered solvent in a recovery tank. The system is switched during the color change cycle from a mode in which solvent is dispensed to clean a pre-change color from a dispensing device to a mode in which the vacuum withdraws solvent remaining in a solvent delivery line to the dispensing device into the recovery tank. Solvent usage, disposal of discarded solvent, and other environmental considerations are salutarily affected.

Abstract: An adhesive discharge device for use with adhesive which sets by the evaporation of a solvent. The device incorporates a valve-controlled discharge nozzle for intermittent discharge of adhesive on a cycle basis. Drying of adhesive around the nozzle opening when the valve is closed and the discharge of adhesive is interrupted is prevented by a movable closure cap containing a solvent vaporizer. The closure cap is movable into a position enclosing and sealing the nozzle opening, and the vaporization of solvent inside the closure cap around the nozzle opening prevents the drying and encrustation of adhesive.

Abstract: An apparatus for applying sealant to a side seam in a container sidewall formed by overlapping portions of the sidewall is provided. The apparatus includes conveying means operable for moving a container into and away from a sealing station. Sensing means is located adjacent the conveying means and is operable for sensing the rotational position of a container sidewall. Drive means is operable for selectively rotating a container to a predetermined rotational position. A sealant dispensing means is positioned adjacent the conveying means at the sealing station and is operable for dispensing sealant onto the seam along substantially the entire length of the seam by a movement of the dispensing means relative to the container. A second sealant dispensing means and station can be provided adjacent the conveying means for applying sealant to a seam between a bottom member and the sidewall of the container.

Abstract: An applicator for use in an apparatus for assembling containers into cup-shaped bases is disclosed. The applicator coats a contact surface of each base with a bonding agent preparatorily to placement of a corresponding container therein. The applicator includes a support fixed adjacent a supply of cup-shaped bases, and a pivot rotationally supported by the support in alignment with the open end of one of the cup-shaped bases. A nozzle is fixed to the pivot and is rotatable therewith for ejecting a bonding agent into the cup-shaped bases. A piston in a cylinder connected to the base connects to a crank on the pivot for rotating the nozzle with respect to the cup-shaped base. A control is connected to the nozzle and to the piston for causing the nozzle to rotate and eject a bonding agent simultaneously.

Abstract: A color change system for spray coating apparatus is characterized by two pumps, each of which is connectable with a selected color of coating material for providing the same to spray coating apparatus. The arrangement is such that the pumps alternately supply different colors of coating material to the coating apparatus, and when one of the pumps is supplying material the other is being cleansed of previously supplied material. In this manner, one pump is always clean and ready for supplying a newly selected color of material, so that any number of different colors of coating material may be provided to the coating apparatus with minimum numbers of pumps, e.g., two pumps. In one embodiment the color change system is used with automatic spray coating apparatus, and in another with manual or hand held coating apparatus.

Abstract: A coating method and apparatus for coating the inner surface of a long tube of small diameter, specifically tubes for a condenser. The coating is a type of spray coating wherein a long flexible supply hose, longer than the long tube to be coated, is reciprocated in the long tube with a spray nozzle attached to the tip thereof for spraying the paint by the action of compressed air, from one end of the long tube to the other end thereof while spraying the paint in atomization. The long flexible supply hose of double structure or sometimes of triple structure is composed of a short heating pipe portion adjacent to the spray nozzle and a long flexible hose portion. The paint and compressed air supplied through separate passages in the supply hose are heated to a predetermined temperature by heating means, for example, a sheathed electrical heater wound about an inside pipe of the heating pipe portion upstream of where the paint is sprayed.

Abstract: A liquid-spraying device, particularly for applying an additive to a moving bed of smoking material. The device includes a body and an elongate narrow unshrouded tubular spray tip carried by the body. First and second ducts are in the body through which the liquid and an atomizing medium respectively can be supplied to the tip. A third duct is provided for supplying a cleaning medium such as air. A jet structure is located remotely from the discharge end of the spray tip, is connected to the third duct and is arranged to direct the cleaning medium along and around the outside of the freely extending tip to the discharge end thereof. The spray tip may be mounted on and extend from a nozzle head connected to the body. The jet structure is provided in the nozzle head, for example, in the form of a plurality of jet orifices equi-angularly spaced around the spray tip. The spray tip and jet can be used in a method of applying a liquid additive to a moving bed of smoking material.

Abstract: A color change system for spray coating apparatus is characterized by two pumps, each of which is connectable with a selected color of coating material for providing the same to spray coating apparatus. The arrangement is such that the pumps alternately supply different colors of coating material to the coating apparatus, and when one of the pumps is supplying material the other is being cleansed of previously supplied material. In this manner, one pump is always clean and ready for supplying a newly selected color of material, so that any number of different colors of coating material may be provided to the coating apparatus with minimum numbers of pumps, e.g., two pumps. In one embodiment the color change system is used with automatic spray coating apparatus, and in another with manual or hand held coating apparatus.

Abstract: A container wherein exposed surfaces thereof which are particularly subjected to a chemical reaction, such as corrosion, are protected by the application of a thixotropic lacquer. A typical installation is the application of a band of thixotropic lacquer internally of the container along the longitudinal side seam. A thixotropic lacquer has the characteristic that there is very little flow after its application to a surface, and thus is particularly adapted for covering raw edges and like exposed areas of containers. The thixotropic lacquer is applied preferably in plural closely adjacent streams which unite after the lacquer engages the container surface. Beneficial results are obtained by adjusting the temperature of the container and/or lacquer, and further by heating the applied band of lacquer.

Abstract: Spray flux apparatus (10) of a soldering system is automatically cleaned by delivery of a predetermined amount of solvent to the apparatus. A control system (50) transmits signals for controlling the delivery of air or solvent through holes (33) in an air manifold (32) located in a flux tank (21). After a predetermined amount of solvent is delivered to the tank (21), the control system (50) signals a solenoid valve (62) to close to stop the flow of solvent to the tank (21) and then signals another solenoid valve (52) to open to allow compressed air to enter the tank (21) to aid in the cleaning of the apparatus (10).

Abstract: A method for emplacing a seal on a closure for a container which comprises despositing a foamed adhesive in liquid form on an interior surface of the closure and allowing that foamed adhesive to solidify and adhere as a solid cellular foam to the interior surface of the closure.

Abstract: Apparatus and method for the fusion processing of synthetic thermoplastic resinous materials, utilizing a first high-velocity stream of gas to transport the resinous material through an elongated passageway which directs the stream of gas and transported material onto a workpiece, thereby fusing the resinous material. The elongated passageway is defined by at least one wall having a plurality of foramina or pores through which a second stream of gas is directed to heat the resinous material to a fusion temperature and to provide a slip stream on the inner surface of the wall thereby preventing the resinous material from sticking to the surface. The first stream of gas may be heated to initiate or supplement the heating of the resinous material.

Abstract: An apparatus for atomizing and dispensing a coating material includes a turbine having a housing and a shaft for rotatably supporting an atomizing device. The shaft includes an outer end extending from the housing for mounting the atomizing device. The shaft outer end includes a tapered portion, and the atomizing device includes a central tapered aperture for receiving the tapered portion of the shaft outer end. The housing is divided into a high-pressure side and a low-pressure side by a nozzle plate which directs the flow of compressed air from the high-pressure side across a driven wheel mounted on the shaft adjacent the nozzle plate. The high-pressure side lies between the atomizing head and the nozzle plate so that compressed air moving through the nozzle plate and the driven wheel to the low-pressure side flows away from the atomizing head.

Abstract: Apparatus for uniformly distributing liquid to a moving web or the like including a housing having side walls with elongated liquid exit slits formed therein. Curved deflector plates are positioned adjacent to the exit slits to direct fluid exiting therefrom toward the moving web. Baffles are provided within the housing defining openings through which the liquid must pass prior to exiting from the exit slits. The baffles are positioned in such a manner as to agitate the liquid prior to its reaching the exit slits.

Abstract: Apparatus for a wire spray coating method including a capacitor connected with an electric power source to be charged thereby. A gap switch having discharge electrodes which are spaced apart from each other so that a discharge is produced under a voltage applied by the capacitor. Wire receiving terminals which are spaced apart to receive a length of wire of coating material therebetween, the terminals being connected with the capacitor so that the charge of the capacitor is applied to the terminals through the switch. The discharge electrodes being maintained at a fixed distance so that a discharge across the electrodes is readily produced when the electrodes are supplied with the voltage from the capacitor.

Abstract: This invention relates to a device for coating paper with a resin in a pattern to increase the tear strength of the paper by using an applicator head, rotatable about a shaft through which the resin material is passed through nozzles on to the paper. The resin material is supplied at a constant rate and at a constant temperature and pressure to paper moving at a predetermined speed.

Abstract: An apparatus for applying sealant to a selected area of a container.The apparatus includes means for conveying a container into and away from a sealant applying station. Sealant dispensing means is positioned adjacent the conveying means at the sealing station and is operable for dispensing sealant onto a selected area of the container. Means is provided adjacent the sealant dispensing means for selectively removing any excess sealant from a nozzle portion of the sealant dispensing means.

Abstract: An arrangement for marking articles or workpieces, particularly hot workpieces, such as coils of sheet metal with series of symbols which are individually applied in templates. The latter are in the form of symbols applied in a cylindrical portion and in a flange-like portion of a movable angle ring which is adjustable vertically and sideways. A spray nozzle is associated with each of the portions. The angle ring is connected to a trunnion fixed in an arm which is adjustable vertically and sideways by piston-cylinder units. One piston-cylinder unit is centered in a frame which is movable on a track by driven wheels, and the piston of this unit mounts a lifting table. Another piston-cylinder unit is connected to the aforementioned arm. One vertical spray nozzle is located above the flange-like portion of the angle ring on the outer end of the arm.

Abstract: An apparatus and method for the spray application of solvent-thinned coating compositions whereby optimum coverage of a substrate with a liquid film is consistently achieved without incurring sagging, run-off or surface irregularities, such as orange peeling, in spite of wide fluctuations in the temperature and/or humidity of the surrounding atmospheric environment. In accordance with the invention, a shroud is provided which is disposed in encompassing relationship around the spray nozzle to which air is supplied at a controlled temperature and/or humidity which envelopes and becomes entrained in the spray forming a controlled localized atmosphere and achieving a controlled vaporization of solvent from the liquid droplets during the course of their travel from the nozzle to the surface of the substrate being coated.

Abstract: A method and apparatus for correcting imbalance occurring in pneumatic tires during their manufacture. Correction is made by depositing on the inside surface of the tire, at a balance-correcting position, a measured quantity of an uncured, quick-curing, urethane or other liquid elastomer composition which bonds to such surface when cured, and curing the composition in place against the surface. The surface is cleaned in advance, as by washing, scrubbing, and/or abrading, to remove mold release agents and the like and to expose the bare rubber of the tire wall for bonding. The elastomer is desirably deposited in a pool, but may be dispensed in a stream of air or other gas directed toward the deposit. The air reduces the thickness of the pool and feathers its edges and thereby reduces the discontinuity between the deposited material and the tire surface, and promotes bonding.

Abstract: An apparatus for coating a glass container with a layer of plastic whereby the container rotates about a horizontal axis and moves past a coating station. A plurality of liquid applicator nozzle means, positioned above the coating station, supply uncured plastic liquid to associated areas on the container. Means are provided for supplying predetermined quantities of uncured plastic liquid to respective ones of the nozzle means such that each nozzle means provides a coating of desired thickness and composition on its associated bottle area. The container is also rotated during the subsequent curing of the plastic.

Abstract: The apparatus and method of the invention employ a gas torch which has the feature of selective addition of metal powder to the gas flow, in a cyclical pattern of metal-spraying and non-spraying (fusing) utilization of the same torch. The torch is caused to make short and relatively rapid transverse oscillations of sweep across the width of a swath along the workpiece, the swath developing in the course of a relatively slow feed (e.g., a longitudinal feed) of the torch with respect to the workpiece. The rate of torch feed and the duty cycle of metal application (vs. non-spraying) are related to the effective width of the metal "bead" thus sprayed, so as to assure (1) overlapping of adjacent beads and (2) fusing of adjacent beads to each other and to the workpiece.

Abstract: Process and apparatus for applying adhesive to a surface and for bonding and particularly for attaching a tread member to a shoe in which an adhesive applicator including a jet providing a gas stream having a rotational component is constructed to extrude viscous fluid adhesive to form a filament and to lay down the filament while still soft and adhesive as a band of overlapping loops directly on the attaching surface of an element to be adhered. The elements to be joined are pressed together with the adhesive between them and the adhesive is hardened.

Abstract: Metallic patterns such as electrically conductive pathways are sprayed onto a metallic surface of a substrate by a high temperature flame spray process which process also is used to spray an intermediate layer of ceramic insulation onto the substrate. The patterns are formed in a template through which powdered electrically conductive material is sprayed by a spray gun and a low amperage alternating current of high voltage is applied between the substrate and the spray gun.

Abstract: Apparatus for automatically cleaning excess powder off the masking system of a powder spray unit in which articles, such as glass bottles, are spray coated over their surface exclusive of the neck finish area masked off by said masking system. Two cleaning devices as module units are located beyond the exit of the spray booth in the path of the masking shields. The cleaners function continuously during operation of the masks by engaging the shields in their travel by a pair of contoured rotary brushes, and plural stationary brushes. The brushes sweep the excess powder off the shaped masks in an enclosure kept under negative pressure. Air flow from the enclosure entrains dislodged powder and carries it to a collection system or to the powder supply for recycling and use in the spray system. A blow air assist may be employed to scrub powder loosened by the brushes from the workpiece being cleaned.

Abstract: Apparatus for spraying powdered materials. A spray gun for applying hot powdered thermoplastic materials to a substrate to be coated may be constructed in such a fashion as to have no moving parts. A first fluid amplifier section inspirates the powdered material and cool air from the outside atmosphere. A second fluid amplifier section also inspirates outside air. This air is heated as it is inspirated. A transition section connects the two fluid amplifier sections. The powdered material inspirated by the first fluid amplifier section mixes with the heated air inspirated by the second fluid amplifier section. This causes partial melting of the powdered material so that as it exits from the second fluid amplifier toward the substrate to be coated, the material is in a condition to allow more uniform coating of the substrate.

Abstract: A device for dispensing moistened cleansing tissues. The device provides cleansing tissues which have been moistened with a predetermined and definite quantity of heated water. The device includes a hot water heater for heating the water to an appropriate temperature, a water supply tube for supplying unheated water to said hot water heater, a water discharge tube for discharging properly heated hot water onto serially arranged cleansing tissues, and a throttling mechanism for alternately throttling said tubes for the purpose of controlling the supply of water to said heater and the discharge of heated water therefrom.