Abstract: A combined stop and control valve for incorporation into a pipe carrying the working medium of a turbo-machine and in particular a steam turbine has the respective bodies of the stop and control valves arranged independently of each other in a common housing which is provided with co-axially arranged valve seats located adjacent one another at the flow opening of the valve cage. The body of the control valve has a bell-shaped configuration into the hollow cavity of which the body of the stop valve travels co-axially, and both of the valve bodies are rigidly supported in their end positions against the valve housing. The valve seat is provided with a throttle collar around which circumferentially spaced slots are distributed, the inner diameter of the collar being approximately equal to that of the control edge of the control valve body.

Abstract: A moisture responsive liquid metering device is provided for use in controlling the amount of liquid delivered to a given location according to the moisture level at that location. The device includes a flexible tube through which the liquid flows from one location to another as from a container of water to a potted plant. In its preferred form, a valving device comprised of a wooden tubular sleeve and an elongated valve core are provided for opening and closing the tube in a squeezing action. The valve core is provided with an opening at one end through which the tube is threaded in close proximity to one end of the wooden sleeve which is substantially coextensive with the core. The device is planted in soil, for example, and when the soil is damp, the moisture causes the wooden sleeve to expand to pinch the tubing shut. As the soil dries out the sleeve contracts, releasing pressure on the tube and allowing water to flow.

Abstract: A low pressure gas regulator for purging vessels in which valve means first connects a vessel to be purged with a vacuum pump, and then when the vessel is substantially evacuated, it connects the evacuated vessel with a source of purging gas.

Abstract: A carburetor for internal combustion engines having a housing including a generally discoidal wall and a hub extending axially from the central portion thereof, an air valve having a relatively flat radially extending surface directed toward and concentric with said discoidal wall and with a central conoidal portion having its apex directed toward the interior of said hub portion. The housing wall and the radially extending surface of the valve define an air passage converging radially inwardly to form an annular valving construction and thence diverge into the interior of said hub. The hub includes an annular fuel passage terminating at its upper end in a circumferential series of micro-passages for directing liquid fuel uniformly distributed into said air passage substantially at said valving constriction at right angles to the direction of air flow.

Abstract: An end fitting for flexible hose consisting of a body formed by two separable portions interconnected by frangible means. The fitting body includes a valve normally held in the open position permitting unrestricted flow through the fitting and upon separation of the fitting portions the valve is displaced to a closed position closing the fitting to flow therethrough.

Abstract: A safe pressure relief assembly of the reverse acting rupture disc type guards against very low pressure differentials and includes a thin, bulged sealing disc, a cutting member positioned in spaced relation to the sealing disc and extending a substantial transverse distance thereacross and a sealing disc support member having a stay arrangement projecting into supporting engagement with the concave side of the sealing disc, the stay arrangement having a resistance to collapse sufficient to retain the sealing disc out of contact with the cutting member only up to a predetermined differential pressure.

Abstract: A safety vent for hopper cars includes a tubular housing member adapted to communicate with the interior of a hopper which may be unloaded by creating a sub-atmospheric pressure therein. The vent includes a rupturable diaphragm normally blocking the entrance of air through the tubular housing to the hopper. The diaphragm comprises a material which is stretched across a tubular wall of the tubular member in a tensioned condition, and which at a predetermined PSI within the hopper, ruptures whereupon the ruptured pieces of the diaphragm recede radially outwardly against the wall of the tubular housing in a manner to occupy a minimal amount of space thereby permitting the free flow of air into the hopper.

Abstract: A rotary valve assembly comprising a housing defining a bore and a valve member mounted for rotation therewithin. The housing defines an opening and the valve member has a port which comes into and out of registration as the member rotates. Lubricant is supplied between the two members and sealing means are provided around the opening in the housing to effect a seal with the valve member. The sealing means includes a sealing element disposed in at least one groove formed in the housing parallel to the axis of the bore, the element being urged into contact with the valve member.

Abstract: A rupturable disc shaped capsule replaceably installed in a fire hose coupling, the capsule having a small central bore therethrough to permit the initial limited flow of water, there being one or more regions of the downstream end wall of the capsule which are rupturable by water pressure when the hose fills by virtue of air pockets disposed within the capsule causing the wall to collapse from external pressure there being water-erodible support structure within the capsule which disintegrates upon the rupturing of the capsule wall and entry of water causing the entire capsule assembly to be destroyed and finally blown out the end of the hose.

Abstract: A valve assembly is described for closure of resilient tubes and protection of the ends of such tubing from contamination when the valve is in its closed position. The valve assembly is fabricated from two trough-like members which are connected by a linkage having bi-stable characteristics to facilitate one-handed operation. The assembly is particularly useful when employed at the end of drainage bag outlet tubes in hospital applications, where the likelihood of contamination of the tube end must be minimized.

Abstract: A combined stop and control valve for incorporation into a pipe carrying the working medium of a turbo-machine and in particular a steam turbine has the respective bodies of the stop and control valves arranged independently of each other in a common housing which is provided with co-axially arranged valve seats located adjacent one another at the flow opening of the valve. The body of the stop valve has a bell-shaped configuration into the hollow cavity of which the body of the control valve is inserted. Axial guides are provided for the stop and control valve bodies and the stop valve is situated ahead of the control valve when viewed in the flow direction.

Abstract: A combined stop and control valve for turbine installations and in particular a steam turbine in which the bodies of independently operable stop and control valve components are arranged co-axially to one another in a common housing. The stop valve body has a bell-shaped configuration terminating in an annular seating surface and includes a servo piston component operating in a cylinder and an associated pilot valve for controlling steam entry into the cylinder from the steam chamber. The control valve body includes a bulb-shaped head connected to one end of a spindle, and the other end of this spindle terminates in a servo piston component operating in a cylinder and an associated pilot valve for controlling steam entry into the cylinder from the steam chamber by way of a longitudinal bore through the spindle and valve head.

Abstract: A hydrant for controlling the flow of water from an underground supply includes a casing connected at its lower end to the supply and its upper end to a nozzle for delivery of water from the casing. The flow of water from the supply to the casing is controlled by a main valve operated by a handle on the hydrant casing. An ejector purge apparatus drains the casing after the flow of water through the casing has been terminated by the main valve in order to prevent frost damage. The ejector purge apparatus includes a purge valve controlling flow from the supply through a conduit to a location outside of the hydrant casing. The conduit includes a flow constricting element and a port adjacent the flow constricting element that is in fluid communication with the casing. Flow through the purge valve and the flow constricting element results in venturi evacuation of the water within the casing.

Abstract: A pinch valve includes a distortable rubber-like valve member, in cylindrical form, positioned within a generally cylindrical housing. The valve member has uniformly spaced projections and grooves which enable the valve member to collapse upon itself forming a complete closure between opposite ends thereof. When the valve member so collapses, the circle defined by the outer areas thereof has a greater radius than the radius of the valve member in the uncollapsed condition. The housing has lobular areas to accommodate the extensions of the collapsed valve member.

Abstract: A normally open valve construction utilizes a valve housing defining a fluid passageway extending through the housing between at least two ports, and an expandible, metallic bladder within the housing. The bladder is mounted in non-obstructing relationship with the fluid passageway when the valve is open and is expanded across the passageway in flow-obstructing relationship when the valve is closed. The bladder in the expanded condition has a generally tubular configuration and is closed at one end. In the non-expanded condition, one portion of the tubular configuration is folded coaxially within an adjacent portion to shorten its axial length and to remove all portions of the bladder from the fluid passageway. A pyrotechnic squib or other fluid pressure generator discharges within the tubular configuration to extend the bladder into the fluid passageway and close the valve.

Abstract: Rotary furnace and preheater structure, wherein a billet is heated on an enclosed preheat conveyor where waste gases from the rotary hearth furnace preheat the billet counter to the billet travel direction. The preheated billet is inserted into the rotary hearth furnace wherein combustion gases, exiting from burners mounted in the furnace roof or sidewalls, flow counter to the hearth rotation direction and exit into the enclosed preheat conveyor. A baffle, depending from the stationary furnace roof, controls combustion gas movement counter to the billet travel direction in the furnace, and forces the combustion gases out of the furnace through a flue communicating with the preheat conveyor. A source of aspiration is provided to communicate with the preheat conveyor, and thus to facilitate combustion gas movement therethrough.

Abstract: A nonfreezing, nonpolluting hydrant construction. The hydrant includes an above-ground discharge head, a main valve body disposed below frost line, and a stand pipe interconnecting the two. A flow tube is mounted inside the stand pipe. The upper end of the flow tube is connected to a hydrant opening and closing actuator which reciprocates the flow tube. The lower end of the flow tube carries an ejector assembly incorporating a venturi. In its lower position the ejector engages a seat to close off an inlet line. When the hydrant is shut off, water in the upper portion of the hydrant drains to the valve body and lower portion of the stand pipe below frost line. On subsequent opening of the hydrant, this water is ejected through the venturi. The hydrant also includes a float and check valve assembly to prevent filling of the stand pipe in the event the discharge line is blocked while the hydrant is open. A modified unit in which the hydrant mechanism is embodied in a drinking fountain is also disclosed.

Abstract: A mixing tap comprising a tap body with hot and cold water inlets and an outlet all leading into embossments in a hollow spherical configuration on which a spherical control member is swivelably mounted. The control member has an inner mixing chamber with two peripheral openings which selectively cooperate with the liquid inlet ducts to adjust the hot/cold water mixture according to the inclination of the handle, and a third opening which leads to the outlet duct, a flow-setting valve in the mixing chamber being controlled by screwing the handle. Flexible annular lips integral with the embossments about the inlet ducts, and a flexible tongue fitted around an opening in the tap body through which the handle passes, are pressed by the liquid pressure against the control member to provide fluid-tightness.

Abstract: A quick-closing fire gate is provided having specific application to sectionalized production facilities using vibratory conveyors to transport volatile substances. The conveyor passes through a portal defined by a gate housing at each barrier wall. The gate door or blade initially positioned above the housing is knife-edged to sever the conveyor during its downward translation and is forced flush against the gate housing by the interaction of opposed inclined surfaces on the blade and its support structure. The inclined surfaces furthermore function to eliminate gate rebound by dissipating the kinetic energy of the falling blade and redirecting reaction forces away from the line of blade travel. The rapidity of gate operation is accomplished by a photosensitive cell detonating an explosive bolt which releases a pressurized piston connected to the gate blade.

Abstract: A fluid operated pinch valve comprises a flexible sleeve fixed at its ends within a valve casing that has a laterally facing opening through which the sleeve may be inserted and replaced without removing the valve casing from the flow line. A casing cover section has a planar sealing face that bridges the opening for sealing engagement with the main casing section, and which also seals against linear sealing flanges on ends of the flexible sleeve.