Abstract: A cleaning system and dispenser are disclosed which feature a reservoir for retaining a liquid detergent solution; a chamber for retaining a mass of solid, dissolvable detergent; a measurement device for measuring the concentration of detergent in the liquid detergent solution; and a flow control device for circulating the liquid detergent solution from the reservoir into contact with the solid detergent so as to dissolve a portion of the solid detergent and increase the concentration of detergent in the liquid detergent solution. The circulation of the liquid detergent solution is in response to a signal from the concentration measuring device that the concentration of detergent in the liquid detergent solution has fallen below a predetermined minimum. The dispenser also includes a measurement device for measuring the volume of solution in the reservoir and for adding fresh water to the reservoir when the volume of solution is below a predetermined minimum.

Abstract: The present invention is a beverage dispensing system for providing the parallel connection of a plurality of refrigeration sources responsible for the cooling of associated beverages dispensed from a plurality of dispensing valves. A coolant fluid, such as carbonated water, is cooled by each refrigeration unit and is then co-mingled in a common outflow manifold prior to distribution to each of the valves. Likewise, each similar beverage cooled by each refrigeration unit can be co-mingled in a particular manifold before distribution to each of the dispensing valves. Thus, the failure of one refrigeration unit does not to require the shut-down of a valve or valves, as carbonated water and beverages cooled thereby are co-mingled with the carbonated water and same beverages continuing to be cooled by the remaining functioning refrigeration units prior to delivery thereof to the valves.

Abstract: The invention discloses a machine for the filtering of solid, in particular fibrous, particles suspended in liquids, including a delivery chamber (2) collecting the liquid to be treated, a raceway (3) leading the liquid to be treated into a treatment chamber (4) having a cylindrical bottom (5), wherein there is at least one pair of revolving filters (6, 7), an overflow chamber (16) connected with a recycling tank and an area (21) for the discharge of the recovered solid particles. In the machine each filter (12) has a surface in the shape of a truncated cone and its horizontal axis is essentially perpendicular to the flow direction of the liquid to be treated, the two filters are coaxial with each other and face each other, so as to form a concave space (20) therebetween. The taper of the filters causes the double effect of increasing the filtering performance of the machine and of avoiding its standstill when the delivery of liquid to be treated increases.

Abstract: A liquid storage system involving a variable container concept for storing fresh water and grey water produced by the use of the fresh water is provided. Obviously, other liquids can be handled by this system, either in a recreational vehicle, tank trailer, or dispenser applications. The system includes a hard sided tank containing at least two soft-sided tanks therein. The first soft-sided tank contains fresh water and is connected to the faucet of a sink of a recreational vehicle or the like. The second soft-sided tank is connected to the sink's drain so that it may receive and hold grey water produced from the use of the fresh water. With the fresh liquid tank initially filled and the grey liquid tank initially empty, the system provides for storage of both fresh and grey liquid in the space required for storage of the initial volume of the fresh liquid.

Abstract: An apparatus and method are disclosed for effecting compounding of parenteral admixture solutions, and recirculation with the admixture solution being formed. The apparatus includes a pump cassette configured for operative association with a pump driver, whereby one or more selected source solutions are delivered through the pump cassette to an associated admixture container. After pumping of each source solution, the present method contemplates that the admixture being formed is recirculated through the pump cassette, thereby diluting any source solution in the cassette and associated tubing. In this manner, the possible mixture of incompatible source solutions, resulting in formation of precipitate, is desirably avoided.

Abstract: A device for recycling developer into a photo processing machine. The device includes a container for containing developer coming out of the developer overflow outlet of the photo processing machine. The developer enters via an inlet into the container, connected to the developer overflow outlet, and positioned so as to minimize agitation. The container has at least one overflow outlet therein, positioned so as to permit the outflow of developer from the container when the level of the developer reaches a predetermined level in the container. A pump transfers the developer from the container into the automixer developer tank. This pump is energized by the same control that controls the introduction of fresh developer and water into the automixer developer tank. A level switch is provided for shutting off the pump when there has been a predetermined amount of developer pumped from the container into the automixer developer tank.

Abstract: A chemical bath for immersing articles such as integrated circuit wafers in a hot flow of etchant or other liquid includes a liquid receptacle with a first compartment for receiving the articles and a second compartment which acts as sump and further includes a trough which channels overflow from the first compartment into the sump. A pump recirculates liquid from the sump back to the first compartment. The receptacle is supported by a casing in which the lower region of the receptacle is situated. The casing in which the lower region of the receptacle is situated. The casing is sealed by a flange on the receptacle which overlays a rim member on the casing and by sealing material situated between the rim member and the underside of the flange. The flange is located below the trough in vertically spaced apart relationship with the trough. This inhibits direct heat transfer from the trough to the seal and thereby enhances seal durability.

Abstract: A chemical bath in which batches of integrated circuit wafers or other articles are immersed in hot liquid chemical during manufacture has a processing vessel, an adjacent sump vessel and a trough which carries overflow from the processing vessel to the sump vessel. A pump continuously recirculates liquid from the sump vessel to the processing vessel through a filter. A continuous inflow of liquid is received from a liquid chemical source and an intermittent outflow occurs through an outlet at an upper region of the sump vessel. The liquid chemical source may, for example, supply make-up fluid or be a reprocessor that repurifies the outflow from the sump vessel. The storage capacity of the sump vessel below the outlet is greater than that needed to contain the volume of liquid that is displaced in the processing vessel by the batch of wafers.

Abstract: A conditioning system for water based can sealing compounds comprising a pressure regulation means, such as a gravity fed supply tank adjacent a double diaphragm pump, a filter and a lining nozzle, an exit line from the nozzle connected to an upstream pressure regulator and a return line meeting the supply line between the pressure regulation means and the pump. Additionally, one or more dampeners may be added to the system as well as various pressure gauges and other sensors. The use of multiple lining nozzles on one conditioning system is also disclosed, with the nozzles being capable of independent control. The system without dampeners controls film weights to within +/-5% of the desired amount. The use of one or more dampeners improves film weight control to within +/-3% of the desired amount.

Abstract: A system for exchanging containers containing a medium while the system is in operation without admitting air includes at least two intermediate containers, each of which is connected to a respective transport container. Each of the at least two intermediate containers is also connected to their respective transport container by way of a return tube and a pump. Each of the at least two intermediate containers is also connected to a common outlet tube by way of an interconnecting outlet tube. The common outlet tube is connected to a spraying station and each of the at least two intermediate containers includes a device for determining the level of medium in the respective intermediate container.

Abstract: A method of water supply for a building construction capable of preventing the deterioration of the water quality even when the water is not extracted over an extended period of time. The method includes the steps of: receiving water externally supplied to the building construction by a receiving reservoir; reserving the water received by the receiving reservoir by an upper reservoir located above the receiving reservoir; supplying the water through the water supply pipes leading the water from the upper reservoir to individual faucets located between the receiving reservoir and the upper reservoir from which the water can be extracted; and circulating the water in the water supply pipes by returning the water back to one of the receiving reservoir and the upper reservoir. The system performing this method is also disclosed.

Abstract: A recirculating chemical bath arrangement includes a quartz process tank, and a sump chamber disposed directly adjacent to the process tank. A trough extends about the top portion of the outer walls of the process tank, the trough being inclined to cause gravital flow toward the sump chamber. The sump chamber includes a fitting in the bottom thereof which directs liquid from the sump into a pump/filter circuit, the output of which is fed into the bottom of the process tank. The liquid is thus caused to overflow the process tank and spill into the trough, and flow into the adjacent sump chamber. A plurality of heater units are secured to the exterior surface of the process tank to heat the liquid therein to the proper process temperature. The sump chamber is unheated, so that the liquid entering the pump/filter is at the coolest temperature of the liquid flow cycle.

Abstract: An enhanced system for cleaning a component, such as a blanket, of a printing press in one embodiment provides circulation of wash mixture around a path in such a way that pressure of fluid in the supply line can never exceed ambient pressure. This may be achieved, for example, by utilizing a pump disposed in the return line (rather than in the supply line). Another embodiment provides a spray arrangement for spraying wash mixture onto the component to be cleaned. The spray arrangement has nozzles that are in communication with a feed region (such as the interior of a spray bar) and an isolation valve arrangement for in an open state permitting and in a closed state preventing fluid pressure transmission from the rest of the system to the feed region. A pressure arrangement modifies fluid pressure in the feed region when the isolation valve arrangement is in a closed state.

Abstract: A system for dispersing ozone includes at least first and second ozone-injection ports at spaced-apart locations and different elevations in a swimming pool, components for communicating ozone from a separate source of ozone to each of the ozone-injection ports, and flow control components for controlling the rate at which the ozone flows to each of the ports by enabling a user to separately adjust the rate at which the ozone flows to each of the ports in order to compensate for differences in hydrostatic pressure.

Abstract: A fountain solution supply system for mixing and supplying a fountain solution, having two or more ingredients mixed in precise concentrations, from a reservoir to a printing press. The system includes a high-capacity pump connected to the reservoir. Substantially more than half of the flow of the fountain solution from the pump is directed through a high pressure line to operate a fluidic pump and then returned to the reservoir. The remainder of the fountain solution is directed through a low pressure line to the printing press. The return line from the printing press is connected to a primary intake of the fluidic pump. An electrically-activated, solenoid valve is connected between a secondary intake of the fluidic pump and a supply of at least one of the ingredients of the solution.

Abstract: A plumbing system in accordance with the present invention provides for accelerated hot water delivery to a plurality of plumbing fixtures from a hot water source. Flow switch means are provided to enable a pump to circulate hot water to the plumbing fixtures in response to water being withdrawn from a plumbing fixture. In addition, the hot water source may include a hot water recovery apparatus for withdrawing hot water from circulation pipes subsequent to cessation of water flow from a plumbing fixture.

Abstract: A closed loop feedback control for a high pressure impingement mixing system. The high pressure impingement mixing device is equipped with a circulation loop containing both a pressure sensor and a flow volume meter. Constant pressure and flow volume is achieved by continuous closed feedback loop monitoring of the pressure and flow volume to effect a change in an adjustable pump setting and servo displaceable nozzle needle. The nozzle needle adjustment allows maintaining the appropriate pressure and volume on a continuous spaces. It also allows altering component ratios and/or flow volumes during a shot in order to affect a change in material or flow characteristics of a produced part.

Abstract: In order to prevent dripping in an oil supply system for a burner nozzle there is provided a pump stop valve in the supply line that connects the pressure outlet of the pump to the burner nozzle and a nozzle shut-off valve in the supply line between the pump stop valve and the nozzle. A circulating valve is provided in parallel to the pump stop valve to open when the pressure between the pump stop valve and the nozzle shut off valve is higher than the pressure at the pump outlet. As a result if the oil in the supply line adjacent the nozzle expands, oil can return through the circulating valve to the line between the pump stop valve and the pump outlet.

Abstract: A water conserving system for plumbing installations in buildings, for instance in homes, institutions, industry, etc., facilitates saving of water during adjustment of volume and temperature and precludes the need for water shut-off and subsequent readjustment to accomodate suspensions of actual water use while saving, for reuse, the water that otherwise flows unused to drain and into the sewer system. The water conserving system provides water outlet fixtures having diverter valving means for selective diversion of water through return conduits to storage means, whence it is returned to the water supply for reuse, so that water adjustment may be performed with least water waste and water flow may be left turned on (and adjusted) without it being wasted to drain when actual use is temporarily suspended.

Abstract: A device for effecting secondary circulation of water into a hot water tank not having a return opening. The arms of a T-fitting are place in series with the distribution line near the outlet port of the water tank. A return line, continuous at one end with the distal portion of the distribution line, is continuous at the other end with a relatively small internal line which lies within the leg of the T-fitting, one arm of the T-fitting, and extending through the outlet port into the water tank. A relatively low power pump and a sinking-ball valve are placed in series with the return line to cause the flow of water in the secondary circulation system to flow in one direction only.

Abstract: The invention refers to a mixer valve, particularly for heating and hot water installations, which is integrated into the housing of a circulation pump in such a manner that the wheel-shaped actuator, which is provided with blades, and the running wheel of the circulation pump are arranged with flush axles, so that the mixer actuator can be adjusted by means of coupling links which can be inserted or removed in relation to the running wheel of the circulation pump via a controllable coupling. According to the invention, the actuator is designed in such a manner that, independently of the position of the actuator and/or its blade, a water exchange in the order of magnitude of 10% of the water throughput will take place even in the blocked position, so that the water returning from the heating circuit is mixed and thus warmed prior to returning into the boiler.

Abstract: A fluid pressure regulator for metallic flake pigment and other potentially degradable paints is provided by utilizing an orifice of such cross-section, shape and length so as to provide the desired pressure drop while at the same time maintaining flow in the laminar regime through the regulator.

Abstract: An emergency fuel transfer accessory adapted for mounting in a vehicle's fuel system is disclosed. In a normal or first mode the accessory directs fuel through the confidential fuel system of the vehicles. The accessory includes a valve adapted for utilizing the action of the vehicle's fuel pump for drawing fuel from an external fuel source and directing that fuel through the fuel system of the accessory fitted vehicle into said vehicles fuel tank. The valve is further adapted in another mode to transfer fuel from the accessory fitted vehicle outward to an external fuel source. In a fourth mode, the valve is adapted to direct fuel from a first external fuel source, through the accessory fitted vehicle's fuel system, and thereafter discharging that fuel into a second external fuel source. The valve includes a plurality of channels which are positionable to connect with conduits connecting the accessory vehicle's fuel pump, fuel tank and carburetor.

Abstract: A wire cut electrical discharge machine (10) has two machining fluid supply systems respectively for supplying machining fluid is having different qualities to the machining section (14) thereof, namely, a rough-machining fluid supply system (20) and a finish-machining fluid supply system (60). The rough-machining fluid supply system (20) has a first machining fluid quality regulating circuit comprising a first machining fluid tank (26) having a filtering device (3) for filtering powdery chips, a specific resistance detector (34), a cooler or heater (42, 44), an ion exchange device (52) and pumps (40, 58), and the finish-machining fluid supply system (60) has a second machining fluid quality regulating circuit comprising a second machining fluid tank (66), a specific resistance detector (74), an ion exchange device (92), a cooler or heater (42, 44) and pumps (40, 98).

Abstract: A closed loop feedback control for a high pressure impingement mixing system. The high pressure impingement mixing device is equipped with a circulation loop containing both a pressure sensor and a flow volume meter. Constant pressure and flow volume is achieved by continuous closed feedback loop monitoring of the pressure and flow volume to effect a change in an adjustable pump setting and servo displaceable nozzle needle. The nozzle needle adjustment allows maintaining the appropriate pressure and volume on a continuous spaces. It also allows altering component ratios and/or flow volumes during a shot in order to affect a change in material or flow characteristics of a produced part.

Abstract: An aquarium filter having a housing unit for mounting on the wall of the aquarium tank with an intake chamber for receiving contaminated water and a filtering chamber for filtering the contaminated water and passing it back into the aquarium. A removable intake tube transfers the water from an inlet end to an outlet end where it can flow from the aquarium tank to the intake chamber. A slidable control valve selectively exposes bypass ports on the outlet end to regulate the flow rate of the aquarium water from a maximum down to shut-off, and all values therebetween.

Abstract: In the sequential coating of motor-vehicle bodies using a preprogrammed painter-robot, the paint is switched on and off by an automatically controlled pilot needle-valve (FNV) at predetermined times as a function of the relative positions of the robot and the motor-vehicle body. Return circuits including flow-control valves (DV1, DV2) actuated at predetermined times are provided which match the switching on and off of the pilot needle-valve (FNV) for avoiding unwanted pressure fluctuations.

Abstract: Apparatus and methods are disclosed for intimately mixing and contacting first and second fluids for purposes of scrubbing and cleaning one of the fluids with the other. The apparatus includes a venturi mixer device having a nozzle and feed conduit for mixing two fluid streams together. In addition, the venturi mixer device has an impingement member upon which the mixed stream of fluids impinge immediately following the mixing of the streams of fluid. The venturi mixer devices are preferably arranged in a cascade arrangement with subsequent devices being spaced a vertical distance from the previous respective devices. First and second fluids are mixed together in the initial venturi mixer device. The mixed effluents from the initial and intermediate venturi mixer devices are used as the drive fluid for subsequent, respective, downstream venturi mixer devices to further mix additional second fluid to the mixed effluents.

Abstract: A method and apparatus for applying a magnetic liquid to a moving web by using an extruder head for ejecting the magnetic liquid onto the web. A by-pass line for returning the liquid to a feed source through a changeover valve is provided immediately upstream to the extruder head. The liquid is supplied to the by-pass line through the valve after the extruder head is filled with the liquid before the first starting of the application or the resumption thereof. The position of the valve is shifted at the time of the first starting of the application or the resumption thereof so as to supply the liquid to the head to perform the application.

Abstract: A device applicable to an electrophotographic color copier or a color ink jet printer for selectively supplying visualizing liquids of different colors, e.g. black, red, green and blue or a mixture thereof to a photoconductive drum, paper or like recording medium to form a visible image on the medium which corresponds to an image of an original document. The device includes a black liquid vessel, a red liquid vessel, a blue liquid vessel, and a cleaning liquid vessel. The liquids from the various vessels are selectively fed to the device and, after a visualizing operation or a cleaning operation, selectively returned to the respective vessels by two switching units. Residual toner particles are returned to the black liquid vessel. A purifying member for capturing toner or like visualizing agent which is contained in the black liquid is situated between an overflow port of the black liquid vessel and the other liquid vessels and cleaning liquid vessel.

Abstract: An agitating mechanism to aid in preventing the buildup of sediment in a gas fired water heater. The agitating mechanism includes a pump located outside of the tank and a first conduit connects the inlet of the pump to the interior of the tank, while a second conduit connects the discharge side of the pump to the lower end of the tank. Operation of the pump will withdraw water from the tank and discharge the water back into the tank adjacent the lower head to help provide agitation and prevent the buildup of sediment. The conduits, as well as the pump, can be mounted on a cleanout panel which encloses a cleanout opening in the lower end of the tank.

Abstract: An agitating mechanism to aid in preventing the buildup of sediment in a gas fired water heater. The agitating mechanism includes a pump located outside of the tank and a first conduit connects the inlet of the pump to the interior of the tank, while a second conduit connects the discharge side of the pump to the lower end of the tank. Operation of the pump will withdraw water from the tank and discharge the water back into the tank adjacent the lower head to help provide agitation and prevent the buildup of sediment. The conduits, as well as the pump, can be mounted on a cleanout panel which encloses a cleanout opening in the lower end of the tank.

Abstract: The preparation of adhesive compounds for mineral fiber felts, involves combining and mixing several constituents in the liquid state. These constituents are taken to a preparation container (12) using one or several conduits (13) the number of which is smaller than the number of constituents, with each conduit (13) being connected by one or several valves (10) to constituent feed equipment, with each valve (10) controlling the sequential introduction of a constituent into a conduit (13), with a mass flow meter-type device being placed on each conduit (13), downstream from the valves (10), with the compound prepared subsequently passing from the preparation container (12) to a utilization circuit.

Abstract: Disclosed is a method for regulating the pressure of a gas produced in a reactor and withdrawn from the reactor continuously by means of a gas compressor lying in a gas withdrawal path, to a substantially constant pressure value in the reactor, in which a first setting member influencing the gas withdrawal rate through the gas withdrawal path is controlled in dependence upon the pressure of the gas in the reactor by way of a first regulating section, characterized in that in dependence upon the pressure of the gas in the reactor moreover by way of a second regulating section a second setting member which influences the gas return rate in a gas return path connecting the gas withdrawal path downstream of the gas compressor with the gas withdrawal path upstream of the gas compressor or with the reactor is controlled, the controlling of the second setting member taking place with less inertia than the controlling of the first setting member.

Abstract: An emergency fuel transfer accessory adapted for mounting in a vehicle's fuel system is disclosed. In a normal or first mode the accessory directs fuel through the confidential fuel system of the vehicles. The accessory includes a valve adapted for utilizing the action of the vehicle's fuel pump for drawing fuel from an external fuel source and directing that fuel through the fuel system of the accessory fitted vehicle into said vehicles fuel tank. The valve is further adapted in another mode to transfer fuel from the accessory fitted vehicle outward to an external fuel source. In a fourth mode, the valve is adapted to direct fuel from a first external fuel source, through the accessory fitted vehicle's fuel system, and thereafter discharging that fuel into a second external fuel source. The valve includes a plurality of channels which are positionable to connect with conduits connecting the accessory vehicle's fuel pump, fuel tank and carburetor.

Abstract: An automatic processing machine for photography which performs developing processing of a photographic light-sensitive material automatically while replenishing a processing solution tank with a replenisher solution from a replenisher tank, wherein said replenisher tank comprises a means for circulating and stirring having a jetting section for jetting a processing solution in said replenisher tank to the vicinity of the solution surface in said replenisher tank.The automatic processing machine according to the present invention is capable of mixing and dissolving rapidly even a processing solution containing a poorly soluble alcohol to prepare a processing solution, without any need of a special and separate dissolving tank.

Abstract: A high pressure mix-head for use in reaction injection molding systems includes a full cross section plunger and a piston valve assembly selectively positioned in response to recirculation and pour cycles to control flow through recirculation passages formed on the O.D. surface of a mix-head sleeve.

Abstract: The present invention provides an automatic blanket wash system that recirculates a separable mix of water and solvent. The mix is selectively applied to the blanket cylinders by closing a pressure valve in the recirculation system return line and selectively opening valves to spray bars at the blankets. The pressure valve closing causes a pressure build up in the system for the spraying of the mix onto the blankets.

Abstract: Apparatus is provided for controlling liquid levels in different vessels, and the blending of different materials in the separation and purification of polymeric materials in solution, such as polyethylene in cyclohexane.

Abstract: A pressure developing and balancing circuit for use with chopped glass fibers in reaction injection molding eliminating high pressure drop valving of glass filled liquid component materials which normally create serious heating and valve erosion wear problems.

Abstract: A mobile sludge transfer and storage tank and method are provided whereby the sludge transfer and storage tank is provided with an enclosed compartment for containing pumping apparatus. Also included is a telescoping control panel attached to the tank housing for controlling the pumping apparatus to improve the speed, efficiency and convenience of operation. The method includes pumping the sludge into the transfer and storage tank from the transport vehicle or directly to the applicator vehicle if required to provide a rapid system of sludge distribution.

Abstract: Modular circulating and dead end color changers are made from synthetic materials inert to chlorinated hydrocarbon solvents. Universal supply and return manifolds have relatively smooth and uninterrupted walls defined, in part, by inlet and return valve surfaces, for easy solvent flow cleaning. Circulating high pressure color changes have improved actuators and circulating means including bypass lines for continuously recirculating both selected and non-selected paints. Valve sealing is enhanced by improved valves and pressure drop across each module is minimized by modular construction regardless of the number of modules used.

Abstract: The invention relates to apparatus for connecting a radiator to a single or double tube type hot water central heating system. The connecting apparatus includes a conventional thermostatic valve and a conventional valve controlled bypass between the inlet and outlet connectors of the connecting apparatus. A constructural feature which results in lower manufacturing costs and a lower stock inventory for thermostats involves a return passage from the radiator outlets which has a setting valve that is actuatable independently of the bypass valve.

Abstract: A circulating system for dispensing fluid, such as paint, is provided with a circulating loop having a first pump. There is no substantial restriction in the circulating loop and a second pump injects additional fluid into the loop as needed to maintain pressure and make up for fluid which is dispensed by drops off of the circulating loop. Valving may be provided such that, either of the two pumps may function by itself in the event of a failure of one of the pumps.

Abstract: There is described a method of preparing working strength solution in a processing apparatus which comprises adding a requisite volume of concentrated solution to a storage vessel until the liquid level on the storage vessel reaches the top of a standpipe in the storage vessel and continuing to add diluent to the storage vessel so that excess liquid in the storage vessel flows down the standpipe to a connected working vessel, stopping the flow of diluent when the volume of liquid in the working vessel reaches a predetermined volume, then commencing to pump liquid drawn in part at least from the bottom of the working vessel into the storage vessel, the excess liquid in the storage vessel flowing into the working vessel, and continuing to pump liquid from the working vessel to the storage vessel until the specific gravities of the liquid in the storage vessel and in the working vessel are the same.

Abstract: A method and apparatus for supplying dyes to a dyeing apparatus, dyes being selected to yield one of a group of colors. A plurality of tanks of dye is provided, and a circuit leads from each tank to a selected one of a pair of valves that may either direct the dye to the dyeing apparatus or direct the dye to be recirculated. The flow through each valve is metered so a particular rate of flow can be established. One group of the valves provides dye to the dyeing apparatus while another group of the valves recirculates dye to establish another color ready to be provided to the dyeing apparatus. The colors are defined in terms of the tanks and rate of flow from the tanks, so a large group of colors can be defined and stored in a computer, and the computer can control valve position and pump speed to control the color produced by the dyeing apparatus.

Abstract: A modular color changer provides selected paint colors for spraying and continuously recirculates both selected and non-selected colors. A module is provided for each color to be selected and includes supply and return manifold blocks defining, respectively, portions of a respective universal supply manifold and of respective universal return manifold. Port control valves are utilized to control paint flow therethrough, under normal supply pressures. Solvent and air purge valves are used for cleaning. The changer is particularly advantageous when used in high pressure spraying systems. Modules can easily be added to a basic changer to increase the number of selectable paints.

Abstract: In an electric discharge machining method, a workpiece is subjected to an electric discharge machining at a high working speed using water as the dielectric fluid, and after this, the workpiece is finish-machined using oil as the dielectric fluid. An apparatus for carrying out the method has a feeding system for selectively feeding water or oil as the quenched surface of a workpiece is removed by using water as a dielectric fluid in electric discharge machining (EDM) the dielectric fluid to a machining gap between the workpiece and a tool electrode and a returning device for selectively returning the dielectric fluid used in the machining gap to an oil tank or a water tank.

Abstract: An oil filtering machine for filtering the hot cooking oil in the cooking vessel of a deep fryer unit when the deep fryer unit is in normal use. The machine includes an oil filtering unit, a motor driven pump and a liquid circulating system in which the pump is connected and which is connected with the deep fryer unit and the oil filter unit. The liquid circulating system includes a pair of suction lines extending from the pump to the deep fryer and oil filtering units and a pair of liquid return lines extending from the pump to the deep fryer and oil filtering units and valve means controlling the flow of oil through the suction lines to the pump and from the pump through the return lines.

Abstract: A fuel flow diverting system is provided for a diesel engine powered vehicle including an auxiliary power system driven from the engine of the vehicle when the latter is stationary and wherein the vehicle is provided with primary and secondary fuel tanks with fuel supply and return lines being provided for each tank. The fuel diverting system is operative when the auxiliary power system is not operating and the vehicle is being operated in an over-the-road mode, to draw engine fuel from and return excess engine fuel to the primary tank. The fuel diverting system is further operative, when the vehicle is stationary and the auxiliary power system drivable when the vehicle engine is actuated, to supply fuel to the engine from the auxiliary fuel tank only and to return fuel from the engine to the auxiliary fuel tank only.