Abstract: Disclosed is apparatus for dispersing water within a flowing stream of fuel oil, to produce an oil and water emulsion which improves combustion efficiency by as much as 15 percent. The apparatus includes a pressurized supply of water, a differential pressure regulator, a proportioning or tracking valve, and an emulsifying mixer. The differential pressure regulator provides water to the tracking valve at a pressure which is a constant amount above that of the oil just upstream of the mixing point. The tracking valve has two chambers. A first chamber receives oil and contains a float which moves in response to oil flow therethrough; a float extension penetrates from the first chamber into the second chamber which receives the water, and causes movement of a needle shaped element therein, to vary the water flow path area. The operative valve elements are coaligned and configured especially for responsiveness and accuracy in proportioning.

Abstract: A novel apparatus and method for suppressing unwanted resonance in an electromanometry system. The apparatus includes a compliant air cavity connected through a variable impedance device which is coupled in parallel to the liquid-filled catheter of the electromanometry system. By varying the hydraulic impedance through which the compliant air cavity is coupled to the system, precise impedance matching capability is provided over a wide range of hydraulic impedance values, thereby permitting suppression of unwanted resonance and improved frequency response of recorded waveforms in a wide variety of catheter-transducer systems.

Abstract: A constant-flow regulator for use in gravity-assisted liquid-delivery systems, wherein the regulator comprises: upper and lower cylindrical elements secured together for movement to form a chamber, whereby the height of the chamber formed by the upper and lower sections may be varied; and a double conical float element positioned within the chamber, the float element moving between a closed and an open position, whereby one or the other end of the float element moves upwardly or downwardly to seal an inlet or an outlet, in order to maintain constant the liquid level within the closed container formed by the first and second cylindrical elements.

Abstract: A regulating valve capable of precisely controlling minute amounts of gaseous or liquid fluids following an electronic, pneumatic or manual command wherein the fluid is throttled between parallel surfaces positioned in respect to each other through the use of hydraulic means.

Abstract: A regulating valve capable of precisely controlling minute amounts of gaseous or liquid fluids following an electronic, pneumatic or manual command wherein the fluid is throttled between parallel surfaces which are part of a replaceable trim insert and which are positioned in respect to each other through the use of hydraulic amplifying means.

Abstract: A tap, particularly for drinking fountains, has a plunger 17, operated by a toggle 24 and carrying a compressible valve member 19. The valve member 19 cooperates with a seat 16. In order to simplify replacement of the compressible valve member 19, the seat 16 is formed on a receivable carrier 11 which is sealingly and slidably mounted in the valve body and is removable with the plunger when the locking ring 12 is removed.

Abstract: A combination needle type flow control and shut-off valve having a bore completely passing through the body of the valve. The body of the valve has inlet and outlet ports. A sleeve is slidably sealed and received within the bore, and contains a threadedly received needle type flow control. The sleeve further has two planar arrays of radial bores which connect the inlet and outlet ports of the body through the sleeve. The sleeve can then be pushed or pulled or either open or close the fluid flow through the control valve.

Abstract: The pneumatically controlled, variable oil pressure regulator of the present invention maintains a selected combustion ratio of oil and air to a furnace and includes in preferred embodiments a diaphragm housing for a flexible air diaphragm and a flexible oil diaphragm, each preferably including a rolled peripheral lip portion for maximum extensibility and connected to a valve plug having the shape of a solid of revolution formed by rotating a convexly curved surface such as an arc of a circle of less than approximately 90.degree. or a corresponding portion of a hyperbolic, parabolic, or elliptical curve, which intersects the longitudinal axis of the valve plug stem about the longitudinal axis thereof to approximate an ellipsoidal shape whereby very low minimum flow rates can be effected without oscillation of the valve.

Abstract: This invention relates to a shifting stem metering valve that is magnetically actuated. A driven magnet assembly is rotatably supported in a nonmagnetic pressurizable bonnet fixed to the main valve body. The driven magnet assembly preferably comprises rare earth cobalt magnets defining an even number of north and south poles. A cylindrical holder coaxial with and surrounding said tubular bonnet is rotatably secured thereto. The holder carries driving magnets, preferably rare earth cobalt magnets with an even number of north and south poles. Rotation of the holder results in rotation of the driven magnet assembly. A stepping motor or the like controls the rotation of the driven magnet assembly. A valve stem is connected to the driven magnet assembly in a manner such that turning of the driven magnet assembly shifts the stem which in turn adjusts the valve opening.

Abstract: A sublimation refrigerator employs a thermally insulated outer housing having a pivotable top. A smaller insulated dry ice chamber is adapted to be supported centrally within the container as is a separate insulated freezer compartment having a removable top. A first set of serpentine cooling coils are supported in the interior side walls of the main insulated container and in the side walls of the freezer compartment. One end of each of these coils connects to the dry ice chamber. A bubble type visual flow indicator having a transparent window is supported on the exterior of the main container. The output ends of both the freezer coil and the cooler coil connect to the visual indicator through manually adjustable flow control valves. The output of the visual indicator vents to atmosphere. In normal use the valve at the output of the freezer coil is opened allowing free flow of gas sublimating from the dry ice through the freezer coil so that a very low temperature is attained within the freezer.

Abstract: A fluid pressure system includes a source of water pressure 12, a first fluid motor 27 actuated by the pressurized water, a variable displacement hydraulic pump 11, and a second fluid motor 14 actuated by hydraulic fluid from the pump. The pump includes a control device 20 having a control chamber for changing the displacement of the pump. A proportional valve 17 is hydraulically connected to the control chamber for changing the pressure in the control chamber. The proportional valve includes a housing 34, 35 and a diaphragm 36 dividing the housing into first and second chambers 39 and 41. The first chamber is connected to the first fluid motor, and the second chamber is connected to the pump inlet. The pump control chamber is hydraulically connected to the second chamber through a variable orifice, and the size of the orifice is changed in response to the pressure in the first chamber and first fluid motor.

Abstract: A needle valve and a method of manufacturing the needle valve. The needle valve has a metal needle with a leading end that is elongated and tapered so as to provide carefully restricted fluid flow along the length of the tapered end. A portion of the needle is threaded so that the position of the tapered end may be adjusted by screwing the needle. A housing for the needle is manufactured by placing the needle into a mold. The housing is then injection molded around portions of the metal needle. The molded housing forms an inlet port around the tapered end of the needle and a collar around the threaded portion of the needle. An outlet port is molded adjacent to the tapered end and is in fluid communication with the inlet port of the housing. As the housing cools, the plastic shrinks thus conforming the inlet port to the tapered end of the metal needle and creating a hermetic seal around the tapered end. A plastic knob is also molded onto the opposite end of the metal needle.

Abstract: A device for regulating the flow of liquid through a liquid line communicating with a reservoir disposed thereabove comprises a housing defining a float chamber having inlet and outlet openings in the top and bottom walls thereof, respectively; a substantially egg-shaped float disposed in the chamber for vertical movement between an upper position and a lower position; upper valve means connected to the float for closing the inlet opening when the float is in its upper position and lower valve means connected to the float for closing the outlet opening when the float is in its lower position, the valve means being in close spaced relation with the top and bottom walls of the chamber throughout the range of movement of the float; and means disposed beneath the chamber for regulating the flow of liquid through the outlet opening.

Abstract: A pneumatic timer for a timing relay is regulated by the axial movement of a valve needle through a chamber formed in the body of the timer. The valve needle forms a tapered valve stem along its longitudinal axis and the valve stem is eccentrically disposed in a passageway leading from the valve chamber to provide a crescent-shaped bleed area between the valve chamber and the interior of an expandable bellows. Springs are disposed in the valve chamber to bias the needle to its eccentric position, where the valve stem contacts a portion of a valve seat formed around the passageway. The size of the bleed area between the valve stem and the noncontacting portion of the valve seat changes as the valve needle is moved along its axis, but the shape of the bleed area remains substantially the same, so that the valve can more easily be set to provide the desired time delay.

Abstract: A water induction system for internal combustion engines which consists of a metering device for metering controlled amounts of air and water, a control valve which is vacuum operated and connected to the metering device to allow a predetermined amount of air and water to be drawn into a heater wherein the air water mixture is vaporized and admixed with the fuel air mixture entering the intake manifold.

Abstract: A valve for controlling the flow of gases from high pressure cylinders is provided having a projected raised annular valve seat surrounding a gas passage, a stem in threaded relation to the valve body whereby rotation of the valve stem in the valve body moves the valve stem toward and away from the valve seat, a circumferential shroud extending from the end of the valve stem and surrounding the valve seat when the valve is closed and partially open, a resilient seal member positioned within the recess on the end of the valve stem formed by the shroud, said resilient seat member having a tapered projection which extends into the gas inlet passage when the valve is in closed position and provides a gas tight seal between the valve stem and the valve seat.

Abstract: The disclosed system controls, through novel pressure and valving adjustment mechanisms, the application of dampening fluid to the ink roll or offset plate on the plate cylinder of an offset printing press. The dampening fluid passes through a pressure compensator which adjusts the fluid pressure in response to changes in the speed of the press. The fluid at the adjusted pressure is then directed to a spray bar, where it is discharged through a plurality of nozzles. The fluid is directed to the spray bar by a multiple valve, page control assembly. In the page control assembly fluid from a common manifold is discharged through a plurality of dual control valves to respective nozzles. Closure elements for the respective valves are operated by air pistons. A plurality of needle elements for the respective valves are axially adjusted by a common manual control so that adjusting the manual control adjusts the amount of fluid from one segment of the spray bar, preferably corresponding to a full page.

Abstract: Apparatus for converting a conventional insulating picnic cooler or the like into a refrigerator includes a small container, disposable within the cooler, for dry ice. A rectangular frame insertable within the interior of the cooler includes a pair of refrigeration coils which are disposed in proximity to opposed side walls of the cooler. One end of each of the coils connects to the dry ice container. The other end of the coils connects to a manually adjustable valve having a pressed blow-out section for relieving excess pressure. The valve is disposed in the exterior of the container. Gas flowing through the valve from the coil passes to the atmosphere through an indicator having a body of fluid in a transparent window so that bubbles produced upon passage of the gas are visible and allow manual adjustment of the valve to control the rate of gas flow and thus the rate of sublimation of the dry ice and the temperature within the cooler.

Abstract: A variable displacement pump supplies fluid to the single acting draft control cylinder of an agricultural tractor through a valve for controlling flow to and from the draft control cylinder. The valve houses a control rod activated valve spool that when displaced allows fluid to unseat a check valve between the spool valve and the draft control cylinder.Fluid is exhausted from the draft control cylinder when the control rod causes unseating of a main poppet by unseating a pilot valve in the main poppet. Fluid being exhausted from the draft control cylinder then passes through the valve to tank.

Abstract: A flow passage for a flowable medium is bounded by a wall, and located in e flow passage are one or more devices which suppress the occurrence of such flow conditions in the medium as would tend to cause the development of vibrations in the flowable medium and in the walls surrounding the flow passage.

Abstract: An unloading valve spool with a tapered nose section is urged across a pair of unloading ports at a controlled rate eliminating violent upstream pressure generation. The unloading valve is subjected to equal system fluid pressure on each side of it as the spool is provided with a through passage that is dead headed on the back side of the unloading spool. A return spring urges the unloading spool to a normally closed position. An unloading piston prevents the unloading spool from closing too rapidly preventing the generation of a significant upstream pressure spike.

Abstract: An improved self-actuated constant flow rate regulator system is described which can keep the rate of flow of fluid through a filter or other variable load constant within close limits. One application for this invention is for sampling the air for toxic dusts in factories where it is desirable to draw air through a collecting filter at a pre-set rate regardless of the amount of deposit on the filter and where a number of such filters may be connected to a central vacuum pump. The system comprises a differential pressure regulator and an adjustable metering orifice working in conjunction with each other. The regulator senses the pressure drop across the orifice and governs the flow rate accordingly. Details of the regulator valve and of the metering orifice are set forth which contribute to improved operating performance and manufacturing efficiency.

Abstract: A hydraulic brake booster operatively connects with a pressurized fluid source and a master brake cylinder to convert the pressure within the pressurized fluid source to a power assist to the master brake cylinder during a brake application. The booster includes a cylindrical housing defining a bore and a piston is slidably mounted in the bore to define a pressure chamber and to operatively connect with the master brake cylinder. A valve member is slidably disposed within a bore within the piston and is movable upon a brake application to communicate the pressurized fluid source to the pressure chamber which urges the piston into engagement with the master brake cylinder. In a rest position inlet and outlet openings on the piston communicate fluid through the piston without any transfer of the force within the pressurized fluid to the piston.

Abstract: The pump Injector is a brass valve with a needle type regulator that is adapted onto the intake side of a pump. This injector enables a person to regulate the flow of a liquid composition into the main flow of water or other liquid that is being pumped by adjustment of the needle valve. Specifically, the liquid that is to be used is in a container. A clear plastic hose runs from the container and connects to the pump injector. The vacuum from the pump sucks the liquid from the container up through the plastic hose through the hose connection sleeve and down past the needle valve head and along the flattened side of the brass valve. It is then sucked through the 1/16 inch side port hole and is regulated by the needle valve. The regulated flow passes on down into the liquid being pumped.

Abstract: A high pressure valve of the type employing a non-rotating valve needle having a tapered tip which may be selectively moved between seated and unseated positions relative to a valve seat in a valve chamber. The valve seat is tapered inwardly and has a smaller taper angle than the valve needle. A valve actuating stem is received through a valve packing nut with the actuating stem having a bifurcated inner end defined by a transverse, generally rectangular bore intersected by an axially directed slot. The slot is somewhat smaller in breadth than the width of the bore and extends between the bore and the innermost end of the stem. The valve needle includes an enlarged cylindrical or spherical connecting end adapted to be received in the actuating stem bore and slot. Sealing for the needle is provided by a sealing medium comprised of a combination of a seal member received between a pair of seal washers in an enlarged coaxial area at one end of the valve chamber.

Abstract: A modulating plug valve is disclosed having a valve seat for providing communication between the inlet and outlet openings of the valve, a stem extending through the valve housing, a disc mounted on the valve stem for allowing angular movement of the disc with respect to the stem for seating against the valve seat to cut off communication between the inlet and outlet openings and a plug mounted on the valve stem for lateral and angular motion with respect to the stem for modulating the fluid flow between the inlet and outlet openings when the disc is not seated against the valve seat.

Abstract: A modulator valve assembly comprising a valve body having a first compartment area at one end thereof and an elongated bore extending therethrough from the inner end of the first compartment area. The first compartment area is closed by an inlet cap which is in operative communication with a source of fluid under pressure. A piston is slidably mounted in the bore and is provided with a pair of spaced-apart metering slots formed in the periphery thereof which extend between one end thereof and a reduced diameter portion. The valve body is provided with a discharge port formed therein which communicates with the bore intermediate the ends thereof. A spring is mounted in the bore to yieldably urge the piston towards the inlet cap so that the metering slots permit fluid to pass from the first compartment area to the discharge port. Means is provided in the port to limit the movement of the piston in one direction.

Abstract: An adjustable needle valve provided with an orifice and a needle valve stem is characterized by a finely calibrated adjustment means connected to the valve stem for controlling variations in the flow of fluid in a system, the needle valve stem being biased so as to be normally urged toward an orifice to restrict the flow of fluid, but which can be manually retracted from the orifice to a position allowing a full stream of fluid to flow through the orifice to flush out foreign particles which may have lodged between the orifice and the needle valve stem. When the needle valve stem is released, it returns to its previously adjusted position within the orifice without having to be reset by the adjustment means.

Abstract: A beverage dispensing valve for pressurized beverages having a faucet portion, a rear portion having a flow control and a check valve portion fluidly connecting the faucet and rear portions enabling removal of the faucet portion while the rear and check valve portions are under pressure; the check valve portion has a check valve which is actuatable by a valve element in the faucet for dispensing of beverage and may have structure for adjusting the flow control in the rear portion.

Abstract: A hydraulic vehicle jack including a novel release valve is disclosed. The jack is of the type having a high pressure cylinder, a ram partially extensible from and retractable into the cylinder, and a high pressure pump for forcing fluid from a reservoir into the cylinder to extend the jack. When it is desired to lower the jack, the release valve needle is turned so as to withdraw a needle tip from fluid-flow-halting engagement with a valve seat. This needle tip is formed in the shape of a cone having an altitude of a dimension greater than the cone base radius. When the needle tip is withdrawn from its position against the valve seat, a small but precisely defined fluid-flow-permitting orifice is created. Valve lowering action then occurs over an extended time period which permits the jack operator to precisely control or halt valve lowering action as desired.

Abstract: Multiple embodiments of fluid flow control valves are disclosed to include a plurality of unique features including; an operating spindle mounted within the valve casing to provide protection for both the spindle and valve stem, means for indicating the position of the valve stem, e.g. a dial guage mounted directly on the stem or a two-stage scale mounted on the stem and on the valve operating spindle, a stem structure which accommodates flow path sizing as well as positive no-flow sealing without the use of soft seals, adjustment structure which eliminates tolerance problems resulting from manufacturing, and replaceable flow control apparatus to permit use of a single basic valve to provide flow control in a wide range of circumstances.

Abstract: A combination flow control and shut-off valve comprising a body having an elongated opening with separated inlet and outlet passages. An elongated valve cartridge is screw threadedly mounted for longitudinal movement within said opening to open and close the connection between the inlet and outlet passages. An elongated needle member is screw threadedly mounted within the valve cartridge and is rotatable to move an elongated tapered needle longitudinally within a cylindrical opening formed in the valve cartridge for precisely controlling the flow of fluid between the inlet and outlet passages. The cartridge is movable independently from the needle member to turn the flow of fluid through the valve completely on and off without affecting the precision flow control setting of the needle.

Abstract: A low pressure drop adjustable choke has a variably adjustable tapered annular port for metering flow of a fluid. The annular port is defined by a tapered plug extending through a mating, correspondingly tapered seat. The area of the port is selectively varied by axial movement of the plug relative to the seat. The device is mechanically adjustable to a selected flow rate, which may be indicated on a precision indicator.

Abstract: A high energy loss fluid flow control device comprises a housing having an annular wall with an inlet adjacent one end and an outlet adjacent the other end. The housing wall includes an inside surface formed with a continuous helical land and groove defining at least a part of a helical flow passage between the inlet and outlet. A valve member is mounted in the housing for movement toward and away from the inlet and has an outer surface formed with a continuous helical land and groove also defining at least a part of the helical flow passage extending between opposite ends of the member. The land of the valve member projects into the groove of the housing and the land of the housing wall projects into the groove of the valve member forming the continuous helical flow passage extending between the inlet and outlet and means is provided for supporting the valve member in the housing for relative rotation to move toward and away from the inlet to lengthen or shorten the continuous flow passage as desired.

Abstract: The subject of the invention is a froth formation limiter for drawing-off devices of carbon dioxide containing beverages, of the type made up of a restrictor centered in a part of the flow circuit so as to offer to the discharged liquid a passage of annular cross-section, the area of which varies along said restrictor, characterized by the fact that the area of aforesaid annular cross-section has a minimum value at the location of the upstream end of aforesaid restrictor, with respect to the direction of flow of the liquid.

Abstract: Disclosed is a portable, pulse-jet engine powered fog producing device in which the valve controlling the flow of the fluid forming the fog is of simplified construction utilizing a mating conical cavity and a conical, resilient valve member which is also provided with an integral shoulder forming a dynamic seal for the valve stem with respect to the valve body. A manual lever, having a unidirectional connection to the valve stem, has a locking and "dead man" feature.

Abstract: A metering rod support for a carburetor for an internal combustion engine in which a vertical extending metering rod is positioned in a metering jet to control the flow of fuel to the fuel nozzle discharging in the air and fuel mixture conduit. An integral one-piece hanger member wholly supports the metering rod and has a downwardly extending leg which contacts and continuously urges the metering rod in a horizontal direction into contact with the inner peripheral surface defining the metering jet thereby to provide improved flow characteristics. The one-piece hanger member is formed of a molded plastic material and when employed with an adjusting screw for varying the height of the metering rod receives the adjusting screw in a tight fit within an internally threaded opening.

Abstract: The invention provides a gas tap particuarly intended to be made of aluminium, using an axially movable plunger to control flow, in which the tip of the plunger is modified for low rate flow control, by providing a low rate flow passage in the tip of the plunger.

Abstract: A control valve, suitable for modulating control of minute flow rates, comprising a cylindrical valve plug having a conical portion slidingly engaged in a cylindrical orifice sleeve, both terminating end portions of which are sealed within and against the inlet portion of a valve body; and wherein said orifice sleeve has one or more perpendicular passages cooperating with the conical portion of the plug to regulate the rate of discharge of fluid through the perpendicular passages as function of the axial displacement of the plug.

Abstract: A high resolution micro-metering valve having a non-rotary needle valve supported between a pair of calibrated coil springs of widely different spring rates. The lower rate spring is axially adjustable in minute increments by the valve actuator to vary the loading on the higher rate spring in an amount proportional to the ratio of the two spring rates. The valve actuator is free of all backlash and all relative movement with the valve packing is restricted to non-rotary axial movement. The valve proper can be contoured at will to provide linear or non-linear flow characteristics without need for any change in either of the two coil springs.

Abstract: Apparatus for controlling the flow ratio of two gases, such as carbon dioxide and air or oxygen, where the principal gas is subject to flow fluctuations and the second gas is added to it at a ratio which is to be kept constant despite the variations in flow of the first gas. From the upstream side of a fixed orifice in a main conduit, the first gas is conducted to a sealed chamber on one side of a very flexible diaphragm. The second gas is conducted to the other side of the diaphragm which serves, in conjunction with a valve controlled by the diaphragm, to equate the pressure of the second gas exactly to that of the first gas. An outlet from the pressure regulator leads to the inlet of a flow control valve, and the outlet of the flow control valve leads back to the main conduit to a point downstream from the fixed orifice.

Abstract: An exhaust gas recirculation system for an internal combustion engine includes a valve in an exhaust gas recycle conduit which is positioned in response to suction at the high port of the carburetor.

Abstract: The present invention relates to a carburetor, and more particularly relates to an improved carburetor for a high-performance engine. Improved performance is provided in part by fixedly positioning the fuel dispensing element in an optimal location of the carburetor's airstream -- regardless of how the airstream varies with the engine operation. Moreover, the disclosed carburetor has a structure that minimizes or eliminates internal flutter that previously produced inconsistent fuel flow. The disclosed carburetor further includes novel fuel purge valve means that is automatically operative upon engine shut-down to drain the remaining fuel from the carburetor so as to prevent flooding during subsequent start-up.

Abstract: A sphygmomanometer in which individual valve mechanisms under control of a series of push buttons are provided to permit release of air from the sphygmomanometer cuff at approximate predetermined rates for proper diagnosis. The valve arrangement includes a safety release feature which prevents the buildup of excess pressure in the manometer.

Abstract: Individually actuatable digital valve elements in parallel interconnect a fluid source to a receiver. In the flow passage of each valve element, there is a converging-diverging nozzle that feeds into the receiver. A trim adjustment screw is movable along the axis of each nozzle to vary the effective cross-sectional area of such nozzle. The nozzle and screw are part of an insert that can be mounted in the valve body after individual calibration.