Abstract: An apparatus for coating a strip of liquid material such as a polymer adhesive onto the surface of a traveling web at adjustable cross-directional locations which includes a transfer roll secured to a drive shaft coupled hub by an asymmetric rim plate. A carrier sleeve is secured to the hub by anti-friction bearings for independent rotation about the axis of the drive shaft. A fountain housing is secured to the carrier sleeve. The fountain housing supports a fountain nozzle for pressurized discharge of a fluid onto the perimeter surface of the transfer roll within an evacuated cavity. The cavity perimeter around the fountain nozzle has a close, sealing proximity with the transfer roll surface. An adjustable doctor blade screeds excess liquid on the transfer roll surface into the evacuated cavity for removal by a vacuum system. The apparatus significantly reduces the emissions of volatile fluids to the atmosphere during the coating process.

Abstract: A processing apparatus using solution comprises a rotary table which rotates while holding a substrate thereon, in the processing chamber provided in the casing, a supply mechanism for supplying a processing solution to a surface of the substrate held on the rotary table, and an impurity remover unit, provided outside the casing, wherein the impurity remover unit includes a cleaning unit for cleaning an object gas introduced from the inlet opening by brining it into contact with an impurity remover solution, and the gas-liquid separation mechanism for separating liquid from gas in an exhaust is provided in the exhaust system for exhausting the casing.

Abstract: In a flow coater for applying coating liquid to a plate member such as a printed board by a curtain flow method, a heat exchanger unit of a temperature controller is arranged in a collection tray which is arranged below a coating liquid supplying head across a conveyance path for the plate member. This heat exchanger unit has a coil-shaped structure. The coating liquid is caused to flow down curtainly from the head to come in contact with the heat exchanger unit in which the heat exchange is carried out. Since a small amount of coating liquid comes in contact with the heat exchanger unit, an excellent efficiency of the heat exchange can be obtained, and hence it is possible to cope speedily and accurately with temperature changes. In addition, since after the coating liquid has flowed down from the head, the coating liquid flows naturally down in the tray while contacting the heat exchanger unit, there is no need of providing a special drive apparatus therefor.

Abstract: A system for applying a suspension of uncooked starch particles in water to a web on a forming wire includes a source of such suspension and a source of dilution water, an application die positioned transversely of the web with an internal manifold opening into a downwardly opening die slot through which material flows from the manifold as a falling curtain onto the web. The die has a plurality of transversely spaced inlets leading into the manifold to define transversely spaced application zones across the web. The suspended starch and water are applied from the manifolds through control valves into the inlets by means of which the consistency or concentration of the starch may be varied at positions representing the application zones across the web to provide a desired strength profile to the dried web.

Abstract: A method of applying a starch sizing to a forming web on a paper machine, such as in the form of a curtain on a fourdrinier machine, employs a suspension of uncooked particulate starch and water which is applied, as a suspension, to the inlet of a downwardly opening die positioned over the forming web and applied at a consistency of between about 2 to 10% onto the surface of the web as a free falling curtain, the impact velocity of which is controlled to a rate sufficiently low to prevent distortion of the web on impact. Improved drainage is achieved by heating the suspension to a temperature less than about 150.degree., to prevent the cooking of the starched particles. The curtain may be applied to the web at fourdrinier table consistencies as low as about 2% and still obtain starch retention rates of about 80%.

Abstract: A device for chemical wet treatment of substrates has a tank containing a treatment fluid for treating the substrates. At least one substrate carrier for supporting the substrates within the tank is provided. At least one substrate lifting device for lifting the substrates off the substrate carrier is provided. A lifting apparatus for lifting and lowering the substrate carrier is positioned in the tank. The lifting apparatus has a first transport carriage connected to the substrate lifting device and a second transport carriage connected to a holder of the substrate carrier. The first and second transport carriages are connected to one another by a jointed connection.

Abstract: A coating system of a liquid to a sheet material. The system includes a tank 1, a feed pump 4, a feed control valve 8 including a liquid drawing or sucking back mechanism, and a slit die 9 for applying the liquid to the sheet, which are connected with each other by means of a first, second and a third feed conduits 3, 5 and 7. A first return conduit 11 with a return control valve 10 and a second return conduit 12 are provided between the feed pump 4 and the feed control valve 8 for returning the liquid to the tank 1. Electromagneticvalves 15 and 17 operated by a control apparatus 22 are provided for switching instantaneously the conduits between the feed control valve and the return control valve 10.

Abstract: A method and apparatus for coating a traveling paper web includes a coating applicator disposed in movably-controlled spaced adjacency with the paper web, which is supported on a rotating backing roll. The coating applicator permits a controlled introduction of a fresh portion of an aqueous slurry of coating material which is mixed with a recirculated portion of coating material in a controlled manner to prevent the formation of large vortices within the coating applicator. The coating material flows successively through mixing, convergent, and recirculation channels, all of which are defined on one side thereof by a distinct surface of a flow stabilizer which is positioned centrally in a cavity in the coating apparatus.

Abstract: An application unit for directly or indirectly applying a fluid or pasty medium to a continuous material web, particularly one made of paper or cardboard, includes a beam that extends across the entire length of the application unit, and a distribution pipe arranged within beam. The pipe is connected via through-flow openings to a feed duct merging into a metering gap forming a free-jet nozzle. The pipe may alternatively be coupled to an application chamber. The through-flow openings are arranged in an upper portion of the distribution pipe and at least one discharge opening for fluid or pasty medium is provided at any one or more other portions of the distribution pipe.

Abstract: A closed loop controllable fluid application system is provided, comprising a substantially enclosed housing, having horizontal and vertical surfaces, with an inlet and an outlet slot formed in opposing vertical surfaces allowing passage of a work piece through the housing; and a mist outlet and a sump drain each formed in one of a horizontal and a vertical surface. Fluid circulation lines communicate with the housing and an application fluid source, terminating inside the housing with a connection to one or more controllable spray devices for delivering atomized application fluid to coat passing work pieces. A mist collector evacuates air through the mist outlet and extracts application fluid from the evacuated air. The mist collector and the sump drain are connected to fluid circulation lines for recycling excess liquid and air-borne application fluid.

Abstract: A process for coating at least one optical waveguide with a filling compound has at least two successive filling stages separated by a wiping device of reduced cross section. In the region of the wiping device, a proportion of the filling compound which is thus wiped off is led past the wiping device by a bypass and is fed once more to coat the optical waveguide in the second filling stage.

Abstract: The covered seed hardening apparatus of this invention has a construction suited for performing simultaneous parallel processes of hardening the gelling agent of seeds. The seeds covered with the gelling agent are dropped from the valves (73b) of the gel covering section (7) into the liquid hardener in the front half of the feed liquid tank (111a) on the reaction tank (111b) side of the flow regulating barrage (111g) in the hardening tank (111) of the gel hardening section (11). The covered seeds immersed in the hardener are moved through the hardener in the guide direction Y by the guide paddles (113b) after the guide paddles (113b) dip into the hardener in the reaction tank (111b) on the feed liquid tank (111a) side until the guide paddles (113b) move to a point in the reaction tank (111b) near the inclined surface (111m) of the hardner stopping barrage (111k) and come out of the hardener.

Abstract: A system automated for providing at least periodic removal of metal ions and contaminants from a chemical bath, consists of a microprocessor programmed for controlling fluid circuits of pumps and valves, for in one state of operation circulating a first predetermined quantity of the chemical bath from a first tank, through an ion exchange column, and back to the first tank; for in a second state of operation circulating deionized water from a second tank into the IEX column for displacing residual chemical bath therefrom for return to the first tank; for in a third state of operation circulating deionized water through the IEX column, and discharging the rinse water from a waste port; for in a fourth state of operation circulating regenerant acid through the ion exchange column, and discharging the used acid from a waste port; for in a fifth state of operation circulating deionized water through the IEX column for rinsing acid regenerant therefrom and discharging the same out of a waste port; and for in a six

Abstract: A method and apparatus for applying a coating to a continuous length of tubing. A coating chamber having entry and exit ports substantially encloses a portion of the tubing while permitting the tubing to pass continuously therethrough. Airflow into the coating chamber through the exit port strips excess coating material from the tubing surface. Air is withdrawn from the coating chamber by vacuum pumps through one or more separation chambers which separate entrained particles or droplets of coating material from the air. The coating chamber is preferably disposed at a distance from the separation chamber(s). The vacuum line connecting the coating chamber with the separation chamber(s) is preferably flexible or breakable. The separation chambers are preferably capable of being operated in series or in parallel. Adjustable masks are preferably provided at the entry and exit ports of the coating chamber. A seal is preferably provided at the entry port.

Abstract: An apparatus for applying a metal-oxide coating to hot, freshly formed glass containers. The apparatus includes a tunnel including spaced apart sidewalls, a conveyor for conveying hot, freshly formed glass containers through said tunnel, and a vapor distributor. The vapor distributor includes a series of alternating vapor inlets and vapor outlets arranged along each side wall of the tunnel. Each vapor inlet along one side wall of the tunnel is positioned opposite to a vapor outlet on the other side of the tunnel. Moreover, each vapor inlet and vapor outlet has a pivoted baffle positioned internally thereof, the pivoting of the baffle being effective to vary the vertical extent of an opening of the inlet and the outlet, and each vapor outlet having an adjustable flow divider internally thereof for dividing the vapor flowing into the vapor outlet into a first portion to be exhausted from the tunnel and a second portion to be recirculated through the vapor inlet into the tunnel.

Abstract: A system automated for providing at least periodic removal of metal ions and contaminants from a chemical bath, consists of a microprocessor programmed for controlling fluid circuits of pumps and valves, for in one state of operation circulating a first predetermined quantity of the chemical bath from a first tank, through an ion exchange column, and back to the first tank; for in a second state of operation circulating deionized water from a second tank into the IEX column for displacing residual chemical bath therefrom for return to the first tank; for in a third state of operation circulating deionized water through the IEX column, and discharging the rinse water from a waste port; for in a fourth state of operation circulating regenerant acid through the ion exchange column, and discharging the used acid from a waste port; for in a fifth state of operation circulating deionized water through the IEX column for rinsing acid regenerant therefrom and discharging the same out of a waste port; and for in a six

Abstract: A fluid dispenser for use in consistently depositing relatively thick and lumpy materials onto receiving surfaces which employs a supply path to a plurality of pump/valve combinations and a feedback pressure line to assure an adequate pressure at the point of deposit. There are positive displacement pumps which operate continuously through the plurality of valves with an additional feedback path to assure constant flow of the material.

Abstract: An apparatus and method is provided for automated periodic removal of metal ions and contaminants from a chemical bath comprising a latex solution containing charged latex particles and having an acidic pH, used for forming a coating by autodeposition. The system includes a tank containing a chemical bath, an ion exchange column for removing the metal ion contaminants, circulating pump, metal composition sensors, and equipment for regeneration of the ion exchange column. The system particularly includes a filter located at the inlet to the ion exchange column for removing solid particulates, including coagulated latex and debris from the coating solution, while permitting the uncoagulated latex particles to pass through to the ion exchange column.

Abstract: A device for applying bronze or similar powder, particularly in a cigarette making machine, uses a corona discharge wire (36) or similar conductor maintained at high voltage to establish an electrostatic field which causes powder to be attracted to prepared adhesive patches on a paper web (14). Excess powder carried by the web is removed with the assistance of vibration, which may be produced by passing the web over an ultrasound device (44) or a pulsed air mover (102). Excess powder may also be removed by an air mover (152) directing a stream of air at the surface of the web carrying the powder.

Abstract: System to re-circulate the treatment material in processes of surface treatment and finishing, which can be employed in association with a pickling and/or acid washing plant (12) or in association with a plant (12) for metal-coating with heat, the plant (12) comprising at least one dip tank (13) containing the treatment material (11), which is caused to circulate advantageously in countercurrent to the material to be treated, which is advantageously strip (14), the treatment material (11) being able to consist of acid baths or molten metal, such as zinc or aluminum, the dip tank (13) comprising a discharge conduit (18) and a feeder conduit (17), the system comprising at least two vessels (16a-16b) which can be hermetically sealed and are of a type resistant to pressure and which are positioned in parallel and associated with the discharge conduit (18) and with the feeder conduit (17), each of the vessels (16a-16b) including an independent inlet closure (20) and an independent outlet closure (19), each of the

Abstract: An improved apparatus for spraying hot melt adhesive includes a gear pump for providing a metered flow of hot melt adhesive. When a valve member is in a first position, a predetermined rate of flow of hot melt adhesive is conducted from the gear pump to a nozzle. When the valve member is in the first position, the valve member blocks a flow of adhesive to a recirculation passage. When the valve member is in a second position, the valve member directs the flow of adhesive from the gear pump to the recirculation passage and blocks a flow of adhesive to the nozzle.

Abstract: An apparatus and method for utilizing and controlling finer particles in a powder coating system returns the finer particles to the spraying apparatus to be sprayed on parts by the system. Finer particles are continuously removed from the system by application onto parts, and the accumulation of fines is thereby prevented. The finer particles may be sprayed through specially adapted spray guns, which also permits the utilization of the special advantages of spraying fine powder materials. By removing fine powder particles from the system before they build up, the present invention improves the powder coating operation in various respects.

Abstract: Method and apparatus for meniscus coating one or two sides of steel strip with a metal or metal alloy. The apparatus includes a horizontally disposed coating tray for containing molten coating metal, gas heaters for maintaining the temperature of the coating metal above the melting point of the coating metal, stabilizing rollers for moving steel strip transversely past a departure lip positioned on one side of the coating tray and adding solid or molten metal to the coating tray for maintaining the level of the coating metal in the coating tray relative to the upper elevation of the departure lip so that an uninterrupted flow of the coating metal can be delivered over the departure lip to a surface of the strip. The coating tray may be rotatably mounted for adjusting the level of molten metal in the coating tray. The coating tray also may include a sled for lateral displacement for positioning the departure lip a predetermined distance away from the strip.

Abstract: A method and apparatus for applying a coating to a continuous length of tubing. A coating chamber having entry and exit ports substantially encloses a portion of the tubing while permitting the tubing to pass continuously therethrough. Airflow into the coating chamber through the exit port strips excess coating material from the tubing surface. Air is withdrawn from the coating chamber by vacuum pumps through one or more separation chambers which separate entrained particles or droplets of coating material from the air. The coating chamber is preferably disposed at a distance from the separation chamber(s). The vacuum line connecting the coating chamber with the separation chamber(s) is preferably flexible or breakable. The separation chambers are preferably capable of being operated in series or in parallel. Adjustable masks are preferably provided at the entry and exit ports of the coating chamber. A seal is preferably provided at the entry port.

Abstract: A paper tinting and drying machine has a tinting module and a dryer module spaced apart from one another by a predetermined distance so that aqueous liquid ink with less than five percent volatile organic compounds by volume applied to the underside of the paper can be visually inspected by the machine operator and so that ink application adjustments located on the paper output side of the tinter module can be accessed by the machine operator. Rollers in the tinting module constrain the paper to follow a path of travel through two sets of inking rollers so that both sides of the paper are evenly coated. After entering the dryer module without smearing or transferring wet ink to the dryer module input guide roller, the ink on the paper is dried by air knives and infrared heaters within the dryer module. In a first embodiment, the rollers in the tinting module drive the paper through the machine.

Abstract: A fluid dispenser for use in consistently depositing relatively thick and lumpy materials onto receiving surfaces which employs a supply path to a plurality of pump/valve combinations and a feedback pressure line to assure an adequate pressure at the point of deposit. There are positive displacement pumps which operate continuously through the plurality of valves with an additional feedback path to assure constant flow of the material.

Abstract: A paint system for an automotive plant circulates various colors of paint, primers and seal coats in individual circulation loops to the many paint booths in an automotive finishing facility. A plate type heat exchanger is used for each circulation loop and the heat exchangers are connected in parallel in a single water circulation loop. The water is delivered to the plate type heat exchangers at a predetermined set point temperature and the plate type heat exchangers are sized to bring the paint to within 2.degree. F. or less of the set point temperature by the close temperature approach of heat exchange.

Abstract: An automated system is disclosed for providing at least periodic removal of metal ions from a chemical complex and contaminants from a chemical bath. The chemical bath is a latex solution containing charged latex particles and having an acidic pH to form a coating by autodeposition, the charged particles tending to coagulate when subjected to a high shear circulation. The system uses an ion exchange column containing an iminodiacetate ion exchange resin for removal of the metal ion contaminants. The chemical bath is passed through the ion exchange column at a low velocity to prevent coagulation of the latex particles. Conductivity measurement devices and controllers are used to automate the operation of the system. Also, additional sensors, such as pressure and level sensors, controllers, filters, circulation pumps and tanks are used for performing rinsing and regeneration of the ion exchange column.

Abstract: A foliage coating and treating apparatus is provided for treating plants with a coating in a manner which advantageously removes excess coating from plants passing through the apparatus. The apparatus includes a coating stage wherein the plants are coated with a coating and a hanging stage wherein the plants are hung on a conveyor. The apparatus further includes a blowing stage wherein the plants are blown with air to promote drying and removal of excess coating and/or preserving liquid. To remove excess coating from the plants, the apparatus includes a coating removal stage which employs a booth having first and second opposed side surfaces between which the plants pass on the conveyor. The booth also includes a plurality of first air vents situated on the first side surface and a plurality of second air vents situated on the second side surface, each of the first air vents being laterally staggered with respect to the second air vents.

Abstract: A device for applying a solder paste, a glue or another similar material in patches on a substrate includes a supply of material, an outlet, connected to the supply by a conveying conduit, and an arrangement for intermittently forcedly discharging the material in successive small quantities through the outlet. In order to counteract any sedimentation within the conveying conduit, the conduit is formed as a closed loop which contains a pump for feeding the material in a continuous circulating flow therethrough and past the outlet. The outlet includes a discharge opening, provided in the wall of the conveying conduit and through which the material may be thrown out in small quantities by the aid of the arrangement for intermittently forcedly discharging the material, which transiently increases the pressure in the conveying conduit within a zone located adjacent to the discharge opening.

Abstract: An electrically isolating pressure feed paint reservoir suitable for holding electrically conductive paint applied with an electrostatic spray gun. A paint container is located in an electrically insulated housing which is mounted on a dolly for portability. The housing also mounts a pneumatically operated paint pump for delivering pressurized paint to the spray gun. When a lid to the housing is removed the high voltage power source is turned off and any high voltage present in the housing is discharged through a resistor.

Abstract: A recirculating coating liquid supply system for continuous delivery of a supply of coating liquid to a coating apparatus includes a holding tank carrying coating liquid mixture, a main feed line having an intake at the holding tank and a discharge at an applicator trough associated with the coating apparatus. A branch of the main feed line discharges into the holding tank. The system also includes a return feed line having an intake at the applicator trough and a discharge at the holding tank. Pumps are associated with both the main feed line and the return line and a viscometer is connected to measure the viscosity of the coating liquid mixture flowing through the main feed line. Viscosity adjustments are made by infusing measured quantities of coating liquid base or coating liquid thinner into the main feed line.

Abstract: A process and apparatus for producing a laminate of metal and a polymeric film such as polypropylene bonded to a metal substrate such as steel or aluminum strip, preferably electrolytically chromium coated steel for making can ends, comprises laminating a polypropylene film to the metal and subjecting the film to a temperature above its melting point, and then uniformly and rapidly cooling the laminate to a temperature substantially below the melting point of the polypropylene by flooding the polypropylene coated surface of the laminate with cold liquid, e.g., water at room temperature.

Abstract: A plant for the manufacture of feedthrough (through-hole plated) printed-circuit boards or multilayers which comprises four modules (1, 11, 16, 21) through which the objects (3) to be treated are passed in a horizontal continuous process. In the first module (1) the surfaces to be coated are conditioned in an alkaline aqueous solution. An oxidative pre-treatment of the surfaces to be coated takes place in the second module (11). In the third module (16) a coating of organic monomers is deposited on the surfaces to be coated. Finally, in the fourth module (21) the deposited monomers are polymerized to form an electrically conductive coating. The printed-circuit boards or multilayers (3) thus treated and made electrically conductive on the lateral surfaces of the drill-holes are then passed on for the metallization of the lateral surfaces of the drill-holes (FIG. 1).

Abstract: A composite plating apparatus includes a plating tank for receiving therein a composite plating solution containing water-insoluble particles or fibers and a reservoir disposed adjacent the plating tank through an overflow weir, preferably in a common housing, the plating solution flowing into the reservoir in an overflow manner. A pump is disposed within the reservoir having a suction port for drawing the solution in the reservoir and a discharge port for pumping the solution. A conduit connected to the pump discharge port extends therefrom over the bottom of the plating tank through the overflow weir and includes a plurality of orifices. The plating solution is circulated by causing the solution to flow over the weir from the plating tank to the reservoir, pumping the solution to the conduit, and injecting the solution into the tank through the orifices to uniformly agitate the solution.

Abstract: Methods, compositions and apparatus are provided for coating a substrate with a strongly adherent hydroxyapatite coating, which allows for ingrowth of natural bone and strong bonding between the coating and the substrate. The procedure provides for coating under conditions which form sticky particles which bind to the substrate to form a crystalline hydroxyapatite coating. The coating has particular application for prostheses, where porous areas of the prostheses are completely coated with a thin sturdy coating of hydroxyapatite.The apparatus includes a coating trough in which the substrates are present and the reactive components added. The medium is recirculated in an outer circuit through a distribution tank solution preparation tank and coating trough. Means are provided for maintaining temperature and pH. The substrates are maintained in a line normal to the flow in the trough and can be rotated to ensure even coating.

Abstract: A method and apparatus for continuously forming and depositing a layer of monomolecular amphiphilic molecules on a substrate, which include the continuous or intermittent removal of unused film after a substrate dipping. The amount of "dwell time" in which the film resides on the surface of the support media is controlled. A rotatable barrier provides a movable "film front" to achieve repeatable film pressures, consistencies and viscosities of high precision and accuracy.

Abstract: An apparatus for applying a coating of solid particulate powder to the interior surface of tubular, cylindrical articles includes a conveyor for transporting the articles to and from a powder spray station whereat powder is sprayed into one open end of the articles. The conveyor includes an endless belt conveyor movable in a direction perpendicular to the spray from the nozzle and the axes of articles supported on the conveyor. The articles are supported on the conveyor by lugs in the form of rollers which support the articles in grooves defined between adjacent pairs of lugs.

Abstract: A vacuum-coating apparatus has the vacuum-coating chamber mounted on an upright housing part of the upper end of which the suction generator is provided and whose lower end communicates with a horizontal housing part containing the coating-liquid supply. The liquid circulator includes a cartridge filter for removing solids from the liquid which is fed to the coating chamber and which has a conical easily-replaceable filter unit. The air from the changer is directed downwardly along an adjustable air-control plate on the underside of an air-guide plate and then upwardly around an edge of the air-control plate.

Abstract: Coating apparatus and method of operation where the rotatable transfer cylinder and the rotatable metering roller of the coating device do not have internal cooling, but the heated coating liquid which is discharged from the nip between these rollers is itself cooled before being recirculated to a liquid holding pan beneath the transfer cylinder. A liquid catch tray is positioned below the metering roller for receiving coating liquid dripping from the metering roller, the catch tray having a downward incline toward the liquid holding pan, and the catch tray being spaced vertically and laterally away from the nip between the transfer cylinder and the metering roller to thereby provide an open space between the holding pan and the catch tray. A reservoir is positioned below the open space and below the nip for receiving coating liquid from the catch tray and the nip, and for receiving coating liquid overflowing from the holding pan.

Abstract: A system for fixing anodized aluminum surfaces comprises a bath (1) of nickel fluoride solution in which the items are immersed following anodization, and a tank (2), connected with the bath by way of flow and return pipelines (4, 5) and containing a negative ion exchange resin bed charged with F-fluorine ions; the solution is circulated between bath and tank by a recycle pump (3), and the resin bed will be recharged by a regeneration device (7) whenever the fluorine ions have been totally or almost totally replaced by other negative ions.

Abstract: An apparatus for producing a black matrix-type phosphor screen of a cathode ray tube is disclosed, which includes a carbon coating nozzle for coating a carbon slurry on a cathode ray tube panel, a tank for containing the carbon slurry, a supplying system for supplying the carbon slurry from the carbon slurry tank into the carbon coating nozzle and a collecting system for collecting excess carbon slurry produced from the carbon coating nozzle back into the carbon slurry tank, and a carbon slurry regenerating device using an ion-exchange resin is provided. The regenerating device can be placed in at least one of the supplying system, the collecting system and the carbon slurry tank.

Abstract: A method for forming a pigment containing film on a work-piece includes the steps of circulating coating liquid containing pigment through a circulation path, and pulverizing the pigment to disperse the pigment in the coating liquid during the circulating step. The method further includes the steps of dipping a work-piece in the coating liquid during the circulating step, and raising the work-piece from the coating liquid. An apparatus for forming a pigment containing film on a work-piece includes a coating tank, having an inflow portion and an overflow portion, for holding coating liquid containing pigment, and a circulation path having one end connected to the inflow portion of the coating tank and the other end connected to the overflow portion of the coating tank, for circulating the coating liquid. In the circulation path, a pulverizing device is arranged for pulverizing the pigment to disperse the pigment in the coating liquid and to cause the coating liquid to flow in the circulation path.

Abstract: This invention relates to a method for controlling the emission, and recovery, of volatile solvents. In particular, this invention relates to a type of finish material applying apparatus which has become known as a robotized spraying cabinet and to methods of operating such an apparatus. In accordance with this invention, materials sprayed through the spray head and which escape adherence to a sprayed articles impinge onto overspray directing members disposed adjacent the conveyor and between the conveyor and the reservoir, a quantity of solvent for the finishing materials is retained at a location adjacent the conveyor and supplying for use in cleaning the conveyor, and the overspray directing members and retained solvent to be supplied for cleaning are chilled and thereby the vapor pressure of the volatile solvent is reduced, whereby the volatile solvent is maintained in liquid form and control over the emission thereof is facilitated.

Abstract: A breading machine is provided in which the breading recirculation system enables effective circulation of excess breading through the machine to be reused for dispending the breading material onto the surfaces of a food product. The circulation system distributes a variety of breading materials more efficiently so as to avoid congestion or build up of the breading materials within the machine which has previously required cleaning or other functions to be performed. The circulation system provides direct auger-to-auger coupling at transition zones between various breading transporting screws within the machine. Further, appropriately positioned discharge chutes are provided to enable some types of breading materials to be transferred at the transition zones without damaging the breading materials. The circulation system is also completely contained so as to be safe and effective in its operation and yet is easily cleanable to maintain sanitary conditions.

Abstract: Plant for treating water from a first pipe to protect the internal walls of a pipework, including a storage tank (R) for powdered lime, a loop (2) for bleeding water from the first pipe (1), a lime saturator (S) located on the loop (2), and structure (3, 4, 5) for adding powdered lime from the storage tank (R) into the saturator (S). The loop (2) includes, upstream of the saturator (S), relative to the direction of water flow, a decarbonator (D) fed with water which is to be treated. A second pipe (6, 2) which connects the outlet of the saturator (S) with the first pipe (1) includes a loop (7) for recycling a part of the material from the saturator (S) to the decarbonator (D). The structure for adding powdered lime includes a pipe (5) which receives the powdered lime and which connects the outlet of the decarbonator (D) with the inlet of the saturator (S).

Abstract: Apparatus for maintaining a relatively placid pool of liquid coating material in the trough between two nipped rolls comprises a pair of deckles, one disposed near either end of the nipped rolls, each of the deckles having an edge generally conforming to a segment of the adjacent roll to effectively form an end of the trough formed by the rolls. At least one of the deckles has one or more openings which permit the liquid coating material to flow laterally out of the trough and through the deckle at a rate proportional to the depth of the coating material in the trough. Controlling the lateral outward flow of material from the trough stabilizes both the turbulence of the liquid coating material in the trough and the surface condition of the coating material.

Abstract: The present invention is a painting and filtration system wherein the system is capable of non-continuous operation, and wherein the system is capable of automatically removing impurities from the filtration system during operation. The system is particularly characterized by utilizing a solvent holding tank associated with a filtration unit, and sensors located in the solvent holding tank which generate signals to a controller which functions to activate and deactive the filtration system and functions to control the flow of liquid throughout the system so that the filtration unit can be cleaned when necessary during operation.

Abstract: A method for providing a metal substrate with an impact resistant surface is disclosed. The surface of the substrate is exposed to high intensity laser radiation to melt a spot of the surface. Particles of a material such as WC are injected into the melt.In order to enhance the percentage of particles in the surface, thus increasing the wear resistance, there is a forced reflection of stray particles back toward the melted spot.Further a fixture for holding the substrate, comprising the essential reflection surfaces for achieving the desired back reflection is described as well as a device for carrying out the method.

Abstract: A toner solution circulation apparatus controls the application, concentration, and circulation by pumping of toner solution for an electrostatic imaging system by using a vacuum to draw toner solution, which is selectively mixed with concentrated toner solution and clear isopar, from a mixer manifold, and by using the rotating action of an applicator roll to pump, circulate, and mix toner solution, pigment, and isopar. A float and pivot block assembly maintains the correct isopar solution level in the chamber.A tube pump apparatus, having two tubes, one inside the other with sliding seals between the tubes, each tube having a ball type check (foot) valve at its end is submerged in concentrated toner solution in a supply container or bottle, to add pigment to the toner soltuion.The cycle time of the pump stroke is monitored by a Hall effect sensor.