Abstract: A selection valve, creating a minimal flow-through turbulence for use in the administration of three separately supplied intravenous fluids, for selecting with one-handed operation any one of the fluids connected or a mixture of any two fluids adjacently connected, is provided having a body with a cylindrically shaped cavity containing three closely positioned ports and a separately positioned port. A cylindrically shaped rotor may be disposed within the cavity and rotated to position a single passageway part thereof between the outlet and an inlet port. The outlet end of the passageway may be shaped to enable the exposure of the outlet port for any inlet port position. Preferably the valve body is mounted to a support structure which in turn may be secured to an immobile surface.

Abstract: A transfer conveyer for a monorail-supported slurry transportation system has a bottom frame which is formed through a 180.degree. arc. An input ramp and an output ramp and rollers are radially journaled along the bottom frame. The side frames are constructed around the bottom frame, and a plurality of rollers is journaled in the side frame. A transport system is attached to the frames, and an apparatus is attached between the transport system and the frame to change the angle of the bottom frame with respect to the horizon. The input and output ramps are also pivotally attached to the frame in order that they may be swung horizontally with respect to the frame to properly align the input and output ramps with the overhead monorail transportation system.

Abstract: Many chemical reactions involving high pressures are carried out in reactor or distillation vessels. As a safety feature, the vessel is usually connected into an alarm system designed to shut it down if an overpressure condition occurs. During a routine safety check of the alarm system the vessel is isolated from the system by manually closing a valve. Following the safety check, the valve must again be opened to connect the vessel into the system. Some situations may require that a valve be left in closed position following a safety check, or some other operation.The valve of this invention can only be closed or opened with a key member which engages the valve stem. The key is an integral part of the equipment carried by the technician who makes the safety check, so that the act of disengaging the key from the valve stem ensures that the valve is left in either open or closed position, as desired.

Abstract: The pump assembly comprises means defining a fluid retention chamber having an inlet opening and an outlet opening therein, and check valve means adjacent the inlet and outlet openings, which are operative to limit the fluid flow therethrough to relatively inward and outward of the chamber, respectively, when there is a fluid pressure differential thereacross. The pump assembly also comprises hollow pulse generating means in the chamber, having a volume of less than that of the chamber, but including a normally contracted, resiliently flexible portion which is responsive to a fluid pressure pulse in the hollow of the pulse generating means, to flex in relation to the normally contracted condition thereof. It also comprises inpulsing means which are operative to impart a fluid pressure pulse to the hollow of the pulse generating means, to cause the flexible portion of the pulse generating means to flex and impart a fluid pressure output pulse to a fluid medium retained in the chamber.

Abstract: A mixing valve having one single control device by which the fluid output and the temperature of the fluid output are regulated independently. The valve has two plates, one slidable on the other, one plate having an orifice in fluid communication with the valve's outlet and the other plate having two orifices in fluid communication with the hot and cold inlets to the valve, respectively. The orifices are rectangular with longitudinal and transverse axes parallel, respectively. Two-way movement of a handle is transmitted to the said one plate causing it to slide on the other in two directions such that the overlap of the inlet orifices by the outlet orifice is altered. This regulates the rate of flow through the orifices and the ratio of hot and cold fluid in the main output.

Abstract: A conveyor for a flexible slurry hose of the type carried on a plurality of wheel-supported carts interconnected by an articulated linkage. The conveyor provides guidance and track means for transporting the carts and hose through a 180.degree. turn by lifting the wheels from the ground and guiding the linkage through the 180.degree. turn. The hose linkage and carts are guided through portions of an elliptical path before and after passing through an arc of a circle facilitating greater ease in negotiation of the entire turn, and a lesser degree of lateral displacement of the linkage than in systems guiding through a 180.degree. path of travel formed on a constant radius.

Abstract: An actuating mechanism for a movable valve member which is spring biased toward a first valve position. A cable is coupled at one portion thereof to the movable valve member and is wound about a drum on another portion thereof. The drum winds the cable thereon and moves the valve to a second valve position. The drum is released to permit the valve member to move under the action of the biasing spring to the first valve position.

Abstract: A valve stem system is described for use in submerged oil and/or gas production systems designed to improve the reliability of subsea valves. A remotely rotatable pressure cap is threadedly engagable onto and removable from a valve bonnet which is mounted on a valve. The valve bonnet surrounds one section of the valve stem of the valve and forms a metal-to-metal seal with the cap when the cap is threadedly made up on the valve bonnet. Another section of the valve stem extends into the cap. A spline is arranged on that section of the valve stem. A spline clutch is arranged on the interior of the cap and is engagable with the spline of the valve stem to cause, when engaged, rotation of the valve stem upon rotation of the cap. A coil spring is arranged within the cap to push or urge the spline clutch into engagement with the valve stem spline when the cap is removed from the valve bonnet. Bearings arranged between the valve bonnet and the valve stem permit rotation of the valve stem relative to the valve bonnet.

Abstract: A gear box having an extended hub or nose is disclosed herein which is adapted for use on a self-propelled, center pivot irrigation system. The gear box includes a housing, an input shaft extending thereinto, and an output shaft extending outwardly therefrom at a right angle to the input shaft. A gear means in the housing connects the input and output shafts. The housing is mounted on the drive frame of the system with the outer end of the output shaft being connected to a drive wheel which is mounted on the drive frame. The output shaft has a sufficient length so that clearance is provided between the input shaft and the tire on the drive wheel. An extended hub is secured to the housing and extends outwardly therefrom to support the outer end of the output shaft closely adjacent the center of the load imposed on the drive wheel.Generally speaking, center pivot irrigation systems employ a plurality of wheeled support towers which are secured to and spaced along the length of the water distribution pipe.

Abstract: In a spool-sleeve type electromagnetic change-over valve the dimension of the non-valving holes in the axial direction of the sleeve is made considerably larger than the comparable dimension of the valving holes and the total area of a row of the non-valving holes is similarly made much larger than a row of the valving holes so that the spool stroke is kept small while increasing the air flow capacity of the valve.

Abstract: There is here provided an electrically operated valve primarily for the control of a pressurized gas, such as air, and particularly adapted for manufacture in very small units. The electrical components and parts reactive thereto are so constructed and arranged that they can be made in very small sizes without excessive expense but with the resulting product being nevertheless reliable, sturdy and resistive to damage. The structural components of the operator means are held together by resilient means and the solenoid coils encircle the operating plunger and said plunger acts in one embodiment through a spring against an actuator, all such constructions being effective to eliminate the effect of construction variations. Further, there is provided a unique porting arrangement by which relatively large conduits may be attached to the valve unit, and by which, with other constructional characteristics, render the valve capable with only simple modifications to function in a variety of different modes.

Abstract: A reduced pressure principle backflow preventer includes downstream and upstream check valves separating an inlet and an outlet from an intermediate zone. A differential pressure relief valve maintains the intermediate zone at a pressure lower than the inlet pressure during potential backflow conditions and vents the zone during potential back siphon conditions. A unitary body member supports a pair of resilient annular valve members and is inserted into a vented housing bore and retained by friction to form the complete backflow preventer. Both valve members are retained on shoulders on the body member and are held between the shoulders and the bore wall. One valve member includes an axially movable portion cooperating with a downstream valve seat on the body to form the downstream check valve. The second valve member is cylindrical in form and is radially movable inward against an upstream valve seat on the body to form the upstream check valve.

Abstract: In a wall hydrant, a wall-penetrating straight tubular conduit; a valving member movable axially in and out of sealing engagement with a reduced inlet connection valving bore; a hollow cylindrical end casting on the conduit outer end providing a lateral conduit outlet opening from a discharge bore; a plug in the outer casting end having a threaded aperture with a key-rotated stem threaded therethrough connected with a shaft to axially shift, upon rotation, the valving member moved by the shaft inner end and a shaft-carried flange slideably "O"-ring sealable on an interior surface controlling exterior draining and air vent openings associated with the plug; the valving and flange seals spaced, relative to the controlling surface and inlet bore spacing, for conduit drainage and vent opening after inlet closure; also in combination with the hydrant a wall box, a vacuum breaker and air inlet device including an integral enlargement on the casting outlet, a cap secured thereon with a hose connection as the hydrant

Abstract: Piston type hydraulically balanced relief valves are disclosed except for one modification, utilizing pilot valves carried completely within the bodies of the relief valves or relief valve cartridges and wherein a single spring serves for closure of the relief valve and the respective pilot valve. All pilot valves are thus biased by a single spring primarily due to differential upstream and downstream areas both exposed to inlet pressure but with the upstream area larger and dominating. Accordingly, a single light biasing spring can suffice because of the reduced net opening force required, upon a predetermined rise in inlet pressure. The constructions afforded by such an arrangement are more compact than conventional pilot controlled relief valves wherein the relief and pilot valves are closed by separate and relatively heavy springs. Further, the advantage of the sensitivity of pilot controlled relief valves is realized together with effective damping and minimum control flow dependency.

Abstract: An anti-siphon and back-flow prevention valve having a main valve chamber including air ports, an inlet at its lower end and an outlet at its upper end. Contained within the main valve chamber is a check valve including a check valve seat, through which the flow of liquid in the valve must pass. The check valve seat has a flexible diaphragm which mates with the check valve seat and functions to block any back flow of liquid from the main valve chamber into the inlet. A flexible ring is also contained in the main valve chamber and mates with the air ports to function as an air valve, allowing air to enter the main valve chamber during low pressure conditions down stream from the valve. The check valve and air valve operate independently of each other, responding to the various air and liquid pressures in and around the main valve chamber. Both valves are normally held closed by the force of gravity and static water pressure within the main valve chamber during no-flow conditions.

Abstract: A flow control device includes a resilient member defining an opening through which fluid flows, the opening becoming smaller upon increase of pressure of fluid supplied thereto, and relatively larger upon decrease of pressure of fluid supplied thereto. A check valve allows flow of such fluid in an irrigating direction through the device upon a certain level of pressure of supplied water being achieved, but closes when such pressure falls below such certain level to block flow through the device.

Abstract: An improved sanitary water faucet having a valve body with control elements formed by two discs wherein the first disc is stationary and has water inlet openings and an outlet opening, connected on one side to the valve manifold. The other side is directed towards the second disc, which is movably arranged on the first disc. The second disc has a surface cavity overlapping the inlet openings, and outlet opening. A noise isolating means preferably consisting of an elastic plate is disposed between the control elements and the valve body. In another embodiment, the isolating means is an elastic valve cartridge disposed in and secured to the valve body and containing the first and second discs. In still a further embodiment, the isolating means is disposed between the discs and the cartridge.

Abstract: A free standing swivel pipe connector for a center pivot irrigation system having a vertical water carrying conduit with pipe elbows attached to the upper and lower ends thereof. The upper portion of the pipe, including the upper elbow is rotatable around the longitudinal axis of the vertically standing conduit while the lower portion of the vertical pipe and lower elbow are fixed. The swivel joint between the fixed and rotatable pipe portions acts with an associated brace member which interconnects the said two portions of the pipe to provide an articulating joint for the vertical conduit premitting it a single degree of freedom in a plane coincident with the main distribution pipe of the irrigation system to which the upper elbow is attached. The articulating brace member, disposed bilaterally of the vertical pipe, is connected to the lower chord of the pipe truss in the irrigation system to reduce bending moments in the vertical swivel pipe.

Abstract: In a petrol pump for the forecourt of a gasolene station, a support for the delivery hose and nozzle comprises a flexible and resilient arm incorporating at least one flexible petrol conduit extending longitudinally of the arm, means at one end of the arm for connecting the arm in an upright unflexed condition to a casing of the petrol pump and coupling means at the other end of the arm for connecting at least one delivery hose and establishing communication between the conduit and the hose.

Abstract: An improved exerciseable emergency flow shut off device for fluid control systems particularly adapted for use in adverse marine environments. In normal operation the valve spool is continuously exercised by a reversing fluid pressure differential as fluid reversibly flow through the valve. The improved valve includes low breakaway force spool biasing means to reduce the internal fluid resistance of the valve in normal operation and high breakaway force restraining means connected to the shut off means. In the preferred embodiment the spool biasing means and restraining means comprise separate coil springs concentrically located on the spool, the biasing means having a spring rate substantially lower than the restraining means. The biasing coil is reciprocateably compressed in response to the reversing fluid pressure differentials thus minimizing flow resistance. The restraining means is compressed in response to a sudden excess pressure differential thereby permitting shut off of the valve.