Abstract: Means adapted to receive a supply of compressed air and discharge the compressed air therefrom in a regulated manner via a selected port therein, control means within the means, for use in diverting the flow of the supply of compressed air within the means to thereby divert the air from the selected port to a further port in the means, whereby at least a partial vacuum condition is created in the selected port, allowing the ingress of air therethrough from without the means, the ingressed air mixing with the diverted air so as to be discharged through the further port.

Abstract: A portable carbonating apparatus of the type comprising a pressure vessel and a header tank has a bottom inlet and a top outlet controlled by respective valve pistons which are rigidly connected together by a connecting rod.The pistons have equal areas exposed within the pressure vessel, so as to be pressure balanced at all times.The top valve piston also acts to control opening and closing of a venting port to ensure venting of pressure from a head space during initial opening movement of the valves.The header tank is self-valved and is detachable from the apparatus.

Abstract: Apparatus for removing residual water from a water system including a water supply pipe and a shut-off valve. The apparatus comprises a valve detachably mounted in the water supply pipe and including an air valve element controlling flow of supplied compressed air to the water supply pipe to blow out residual water from the pipe after the shut-off valve has been closed. The valve comprises a hollow body having an axis of symmetry with threads on the body for threadably engaging the pipe at a position therealong such that the body extends radially of the pipe and communication is established between the interior of the body and the interior of the pipe. A tool-engaging portion is formed on the body to allow the body to be threadably engaged and disengaged with the pipe by a tool. The air valve element is coaxially secured in the hollow body to control flow of compressed air to the pipe.

Abstract: A water pressurizing system for use where water pressure from the main is too low. A tank has an inlet for water with a check valve and a discharge outlet for consumption. A gas supply is provided for pressurizing the tank. In the gas supply line there is a U-shaped duct with a float valve in the duct for cutting off the gas supply when the tank is full.

Abstract: A vapor delivery system is disclosed comprising a bubbler 12 is adapted to generate and deliver vapors from a vaporizable liquid contained therein, and a reservoir 30 in fluid communication with the bubbler 12 from which liquid may be continuously fed into the bubbler to replenish liquid vaporized within and withdrawn from the bubbler. The system further comprises means for sensing the level of vaporizable liquid in the bubbler and means for providing a gaseous head pressure in the reservoir of variable magnitude dependent upon the level of vaporizable liquid sensed by the sensing means to maintain the level of liquid in the bubbler substantially constant.

Abstract: A safety valve for use with a beverage dispensing system having a pressurized source connected through a conduit to a container of beverage. The safety valve includes a housing having an inlet for connecting said valve to the pressure source and an outlet for connecting the valve to the beverage container through the conduit. A chamber in the housing is divided into at least two subchambers by a rupture disc which ruptures at a predetermined pressure in one of the subchambers. The other side of the disc is exposed to a subchamber which is vented to the atmosphere. Where the pressure in the one subchamber reaches the predetermined level, the rupture disc will burst allowing the pressurized gas to flow out through a vented chamber into the atmosphere, thereby preventing the container from being over-pressurized.

Abstract: A method of dispensing includes the steps of carbonating a beverage, storing a supply of the carbonated beverage, conducting the carbonated beverage from the supply and into a circulation loop, circulating the carbonated beverage in a predetermined direction around the loop at a predetermined rate of volumetric flow, selectively dispensing carbonated beverage from the loop at a volumetric rate of flow greater than the circulation flow rate, reversing the direction of flow of carbonated beverage in the return part of the loop during the dispensing, and conducting carbonated beverage from the supply to the dispensing outlet in both the predetermined and reverse direction while cooling both the predetermined direction and reverse direction of flows; apparatus for dispensing includes a carbonator, a storage receptacle for carbonated beverage, a carbonated beverage circulation loop conduit having a pump, a delivery line, a return line, and one or more dispensing valves; a beverage supply conduit connects the stora

Abstract: A hermetically closed vessel is provided in its top portion with a liquid feed line provided with a check valve and another valve controlled by a float; a compressed air feed line provided with a solenoid valve to control the input of air; and a liquid discharge line extending almost to the bottom of the vessel. A branch located about mid-height in the liquid discharge line is connected to a flexible tube having an open free end attached to a means for regulating the height of the free end. This arrangment allows for the amount of liquid to be ejected to be precisely controlled by the height of the free end of the flexible tube.

Abstract: A system for automatically purging heating mantles and other apparatus including an enclosed volume capable of low level pressurization. The system comprises a pressure sensor for sensing the fluid pressure within the enclosure, which may be the space between a heating mantle poncho and the enclosed flask, and a fluidic logic circuit which is responsive to a low pressure condition within the enclosure to deactivate the heating element in the mantle. At the same time, the logic circuit causes a predetermined volume of purging gas to flow through the enclosure and, after this has been accomplished, reactivates the heating element and reestablishes the minimum pressure conditions by flowing a small volume of purging gas into the enclosure. The system is particularly intended for use in hazardous locations where explosion-proof electrical equipment enclosures are normally mandatory.

Abstract: A fuel supply device for internal combustion engines wherein the temperature of the fuel fed to an injection pump can be regulated in order to avoid temperature influences on the fuel metering operation. For this purpose, fuel is withdrawn in a controlled quantity via a temperature-controlled valve from the intake chamber of the injection pump, where the fuel is under the feed pressure of a fuel feed pump and the withdrawn fuel is fed, either by way of a heat exhchanger or directly back to the intake side of the fuel feed pump. In this arrangement, the inherent fuel heating process taking place in the fuel injection pump is exploited to regulate the temperature of the fuel fed to the fuel feed pump.

Abstract: A dishwashing apparatus is disclosed comprising an air pressure system maintaining constant pressure on liquid treating agents in a plurality of storage tanks, a dishwashing compartment and an electrically operated system to control the flow of the liquid treating agents into the dishwashing compartment.

Abstract: An apparatus is provided for causing circulation within a large body of fluid. The apparatus comprises a "large bubble" generator exposed to the pressure of the fluid at a predetermined level, a vertically extending standpipe, an inverted siphon between the standpipe and the generator, and a transverse connection between the standpipe and a vertically extending stackpipe. Upon generating a large gas bubble into the stackpipe, the gas acts as a piston within the stackpipe, pushing liquid upwardly therethrough, and thereby drawing liquid into the bottom. The continuous passage of such large bubbles through the stackpipe results in a current flow circulation through the large standing body of liquid.

Abstract: A passive propellant acquisition and feed system is disclosed which will acquire and feed gas-free propellant in low or zero-g environments during orbital maneuvers which will also retain this propellant under high axially directed acceleration such as may be experienced during launch of a space vehicle and orbit-to-orbit transfers wherein the propellant system includes a dual compartment propellant tank with independent surface tension acquisition channels in each compartment to provide gas-free flow of pressurized liquid propellant from one compartment to the other in one direction only.

Abstract: A system for automatically purging heating mantles and other apparatus including an enclosed volume capable of low level pressurization. The system comprises a pressure sensor for sensing the fluid pressure within the enclosure, which may be the space between a heating mantle poncho and the enclosed flask, and a fluidic logic circuit which is responsive to a low pressure condition within the enclosure to deactivate the heating element in the mantle. At the same time, the logic circuit causes a predetermined volume of purging gas to flow through the enclosure and, after this has been accomplished, reactivates the heating element and reestablishes the minimum pressure conditions by flowing a small volume of purging gas into the enclosure. The system is particularly intended for use in hazardous locations where explosion-proof electrical equipment enclosures are normally mandatory.

Abstract: The medical altitude chamber is constituted by a pressuretight therapeutic chamber communicating with a source of a gas medium under pressure. It also incorporates apparatus for moistening the gas medium in the therapeutic chamber, said apparatus comprising a liquid reservoir whose lower part communicates through an adjustable throttle with the internal space of the jet pump nozzle, and a pressure regulator which has an inlet for communication with the source of the gas medium, a setting inlet for communication with the therapeutic chamber, and an outlet for communication with the upper part of the liquid reservoir.

Abstract: A method and system are provided for handling a flowable product when transferring same from one bulk container, such as a railroad tank car, to a second bulk container of smaller capacity, such as a tank truck. A fitting is removably mounted on a valved product discharge port provided on the one container. The fitting includes an inlet for a compressed fluid. A removable duct section connects the fitting to a valved product inlet port provided on the second container. The interior of the first container is charged to a predetermined pressure by the compressed fluid while the valved discharge port is closed. The product is transferred from the charged one container to the other container through the duct section when the valved ports of both containers are opened.

Abstract: A pipe line has a check valve therein, operable by an actuator. The actuator is connected to be operated by fluid pressure from the pipe line, and is connected with the pipe line by a control circuit including valve means. A differential pressure valve is connected in the control circuit, and is constructed to sense a drop in pressure within the pipe line downstream of the control valve. Upon sensing such a pressure drop, the differential pressure valve is effective to cause connection of the actuator to pipe line pressure upstream of the check valve, whereby the latter is automatically closed.

Abstract: A coolant container assembly is especially designed for use with an internal combustion engine cooling system together with means to produce a pressurized flow of flushing liquid to flush the system, such means including a source of pressurized gas such as air. The assembly includes:(a) a coolant liquid container operatively connectible to said source of pressurized gas via a pressure regulator,(b) the container having an inlet to pass said gas into the container to pressurize coolant therein,(c) there being a flow restrictor connected in series with said inlet to limit the rate of gas flow into the container thereby to inhibit inadvertent bursting of the container, and(d) the container having an outlet communicable with said cooling system to pass pressurized coolant solution thereto.

Abstract: A gas pressure stabilizer system and valve are disclosed for use with beverage bottle filling apparatus and the like. Gas flow from a pressurized source to a filler bowl is permitted along a conduit, but reverse flow, caused by filler bowl gas pressure fluctuation, is prohibited by a check valve. Rather, a rise in filler bowl gas pressure forces a diaphragm in a stabilizer valve to move away from and uncover a relief port. This port opening permits excessive gas pressure to be vented. Long system service life is encouraged by forming the diaphragm of several membranes.

Abstract: A gas distribution manifold arrangement and methods for the gas precharge of a plurality of associated hydropneumatic hydraulic accumulators. Each accumulator receives, as by an elastic bladder in the accumulator, a precharge of a pneumatic fluid such as nitrogen. Each accumulator has a corresponding gas inlet valve through which pneumatic fluid is admitted to the accumulator. A hollow gas manifold is provided and a separate conduit connects the corresponding gas inlet valve of each accumulator through a corresponding selector valve on the manifold to the interior of the manifold. With the gas inlet valve of each accumulator open, and all of the selector valves on the gas manifold open, charging gas admitted to the gas manifold flows in parallel paths to apply an equal gas precharge to all accumulators.

Abstract: A fire extinguishing system for use especially on a floating roof tank includes an enclosure secured to the tank roof. The enclosure carries an agent tank, an expellant tank and an accumulator tank. The agent tank contains fire extinguishing agent. The expellant tank contains pressurized expellant fluid. An expellant conduit extends from the expellant tank to an inlet of the agent tank. A sprayer duct is connected to an outlet of the agent tank and is arranged along one protected zone of the roof rim. A control valve is disposed in the expellant conduit. A heat sensitive pilot conduit is disposed along the protected zone and fluidly connects the expellant conduit with the control valve so that pressure from the expellant tank maintains the control valve closed. If the pilot conduit ruptures, agent is discharged. A bypass conduit connects the expellant conduit with the sprayer duct.

Abstract: A fire extinguishing system for use especially on a floating roof tank includes an enclosure secured to the tank roof. The enclosure carries an agent tank, an expellant tank and an accumulator tank. The agent tank contains fire extinguishing agent and includes an expellant inlet and an agent outlet. The expellant tank contains pressurized expellant fluid. An expellant conduit extends from the expellant tank to the inlet of the agent tank. A sprayer duct is connected to the outlet of the agent tank and is arranged along one protected zone of the roof rim. A control valve is disposed in the expellant conduit. A flow control member is disposed in the expellant conduit upstream of the control valve for metering the rate of flow of expellant fluid. The accumulator communicates with the expellant conduit upstream of the control valve and downstream of the flow control member so that the accumulator is normally pressurized by the expellant tank.

Abstract: A pressured gas in a control chamber is used to repetitively change the levels of liquid in a container up and down between two levels and holding at the two levels for predetermined time intervals to permit a function, such as a plurality of soldering operations, to be accomplished.

Abstract: An improved accumulator particularly adapted for use in controlling the pressure of a stream of fluid in its liquid phase utilizing the fluid in its gaseous phase. The accumulator is characterized by a shell defining a pressure chamber having an entry throat for a liquid and adapted to be connected in contiguous relation with a selected conduit having a stream of fluid flowing through the conduit in its liquid phase. A pressure and volume stabilization tube, including an array of pressure-relief perforations is projected into the chamber with the perforations disposed adjacent to the entry throat for accommodating a discharge of the fluid, in either gaseous or liquid phases, while a gas inlet and liquid to gas conversion system is provided for the chamber and connected with a source of the fluid for continuously pressurizing the chamber for controlling the pressure of the stream of liquid.

Abstract: An arrangement for the controlled delivery of liquid reagent is shown wherein a reservoir vessel for storing the liquid in volume is coupled to replenish a "vestibule vessel" provided for intermediate storage of the liquid enroute to the delivery point and for pneumatic propulsion thereof, the liquid being pneumatically driven from reservoir to the vestibule through a unidirectional check valve.

Abstract: Apparatus for supplying liquid at a constant but regulable pressure comprising a storage vessel having an inlet and an outlet, the outlet being adapted for connection to a utilization device which is to be fed with liquid at constant pressure. An inlet conduit is connected to the inlet of the vessel and a pump is connected in the inlet conduit for pumping liquid from a liquid supply to the inlet of the vessel. A valve is inserted in the inlet conduit upstream of the pump for preventing reverse flow of liquid to the liquid supply when the pressure in the utilization device exceeds the static pressure due to the liquid height in the vessel. The valve is coupled to the pump to be opened and closed in accordance with starting and stopping thereof. The vessel includes an air inlet duct including a regulating device for adjusting the air pressure in the air chamber of the vessel from zero to a predetermined maximum.

Abstract: Effluent flows into a settling pipe channel or conduit and is prevented from discharge while the solids are settling, by means of airlocks. When the solids have settled, one airlock is opened and the clarified effluent is drawn off and replaced by unclarified effluent at which time the one airlock is closed. When the pipe or the like requires cleaning of solids, the other airlock is opened and untreated effluent is used to scour out the pipe or channel and return the solids to the main settling pond to assist in aerobic action. A plurality of pipes or the like can be automatically sequenced so that continuous clarification and purging is carried out.

Abstract: A sealant system for slide valves used in analysis apparatus and the like in which the slide valves are formed with a channel between the ports in the valve block and the outside thereof, with a sealant liquid supplied under a slight pressure to the channel to seal and lubricate the valve and prevent sticking even after long periods of idleness. The apparatus used to pressurize the sealant liquid is at the same time used to generate a flow of water through a heat exchanger used in the kinetic analysis apparatus.

Abstract: Apparatus for mixing fluids at a fixed ratio. It includes a large tank for the mixture, a storage tank for an additive fluid and preferably, an intermediate tank having a volume at least equal to the amount needed to provide the desired ratio when the large tank is completely filled with the larger volume of fluid and the additive from the intermediate tank. A stand pipe in the large tank and pipes and valves between the tanks are arranged to enable the introduction of the main fluid into the large tank, through a fill valve, to simultaneously displace a proportional amount of additive fluid into the large tank by the action of the main fluid rising in the stand pipe. An interlock arrangement between the fill valve and the other valves assures proper refilling of the large tank with the correct mixture.

Abstract: An installation for use in the discontinuous production of high molecular weight polyethylene terephthalate according to either a first process wherein the production starts by producing bis(2-hydroxyethyl)-terephthalate by transesterification from dimethylterephthalate and ethylene glycol, or according to a second process starting with the production of a precondensate by reacting terephthalic acid with ethylene glycol. The installation comprises substantially a first and a second reaction vessel and a connection between said vessels, and means whereby the flow of reaction product through said connection can be accurately controlled to permit all or only part of the contents of the first vessel to pass to the second vessel.

Abstract: A means for applying additives to industrial gas wherein a closed container has an industrial gas inlet port and a discharge port, a quantity of liquid gas additive in the bottom of said container, a movable arm means mounted within said container and adapted to pivot into and out of said liquid gas additive, a thermal spring element secured to the arm means to cause said arm to dip into the liquid gas additive when the temperature within the container is at least 0.degree. F., and to progressively lift the arm out of the gas additive as the temperature is increased, a conduit means connecting the outer end of said arm with the inlet port to cause the industrial gas to be discharged either into or above the liquid gas additive depending on the attitude of the arm.

Abstract: A system for rapidly building an air cushion over liquid in a tank, without requiring an air compressor for this purpose. During normal operation the air cushion over the liquid is maintained at a given magnitude and pressure by cyclical operation of an air-supply tank at a given normal rate. This air-supply tank is operated by the method and apparatus of the invention at a faster than normal cyclical rate for the purpose of rapidly building up the air cushion when the liquid-supply tank which has the air cushion situated over liquid therein is initially installed or is set up for operation after inspection, repairs, or the like.

Abstract: Metal in the molten state is transferred from one treating stage or zone to a succeeding stage or zone by gravity flow, the flow from one zone to the next being controlled by gas pressure, thus eliminating the need for valves, gates or similar moving parts. The process is particularly adapted to the treating of ferrous metal, more particularly to the making of steel. By providing sufficient zones in the series a continuous process can be run, starting with feed from a blast furnace, and conducting the material through alloying stages and a degassing stage and into a continuous casting zone.

Abstract: A liquid seal for use with low pressure gas lines. It has a U-shaped conduit and an associated reservoir with the sealing liquid therein connected to the bottom of the U. The reservoir has an overflow to maintain a desired level in the U-conduit under static conditions. The top of the reservoir is closed and is connected by a pneumatic line to a valve so that it may be connected alternatively to the down stream side of the gas seal or to the suction side of the pump which circulates the gas in the line.

Abstract: A device for mixing gases with liquids is disclosed, which is characterized by the use of gas inlet and vent valves of unique construction and highly efficient in operation, and the use of a unique toggle mechanism for opening and closing said valves which consists of a minimum number of parts arranged to form a compact unit. The device further includes a fully enclosed or hollow float which coacts with the valve opening and closing mechanism, and a rigid metallic gas inlet tube which functions as a support for a gas diffuser.