Abstract: An anti-leakage apparatus for a toilet tank, consisting of a device for detecting leakage, a device for restraining water from entering the toilet tank in response to the leakage detecting device and a device for mounting the anti-leakage apparatus on the toilet tank.

Abstract: An apparatus and a method are provided reclaiming a useful oil product from waste oil, such as used lubricating oil. The apparatus comprises an oil feed means, a boiler, a heater and a separating means. The heater is used to heat the waste oil in the boiler to a temperature such that lighter hydrocarbons remain unvolatilized, trapping contaminants therewith. The separating means separates the volatilized lighter hydrocarbons from the unvolatilized heavier hydrocarbons and contaminants.

Abstract: A fill valve assembly for a toilet tank or the like includes a riser and a head portion that can be vertically adjusted without removal or disassembly of the valve in order to select a precise tank liquid level. Telescoping conduits in the riser are secured in adjusted position by a bayonet latch system including detents assisted by the force applied by pressurized liquid at the inlet to the assembly. A main valve disk is held against a valve seat by pressure in a control chamber in a standby position and is moved to an open position by venting of the control chamber. The valve includes an axial peripheral flange having an enlarged bead portion captured in an annular channel to provide an O-ring type seal against positive and negative pressure while maximizing flexibility of the disk. A lever for controlling a pilot seat for venting the chamber is pivoted between fulcrum flanges and is held by shoulders abutting one of the flanges. The lever is pivoted by a float in a float chamber.

Abstract: An apparatus for supplying a liquid under a constant pressure comprising a supply tank disposed at a higher lever than articles, i.e.

Abstract: A control valve includes a vertical housing having an upper float chamber, a lower valve chamber, and a valve seat support which is provided between the float chamber and the valve chamber, defines a passage communicating the float chamber and the valve chamber and has a bottom valve seat above the valve chamber. An inlet conduit extends outwardly from the housing and has an inlet and an outlet communicated with the valve chamber. An outlet conduit extends outwardly from the housing and has an inlet communicated with the passage and an outlet. A shaft is movable vertically, is provided inside the housing and has a valve block mounted on a bottom end of the shaft. An upper and a lower stop are respectively fixed on the shaft. An upper and a lower float are respectively movably sleeved around the shaft between the upper and lower stops. A perforated partition is mounted inside the housing between the upper float and the lower float.

Abstract: A valve for use in the float chamber of a boiling water unit. The valve consists of a body of circular horizontal cross section having a vertical outer wall. The inner portion of the valve body includes a central circular cut-out seat portion to accommodate a cylindrical seal, the wall of the valve seat between the cut-out portion and the outer wall being sloped in the manner of the surface of the frustrum of a cone, the seat being positioned below a nozzle so that when the nozzle is spaced from the valve body, flow from the nozzle contacts the valve body and is deflected along said sloped outer wall to activate a temperature sensor.

Abstract: A trough surrounding the base of a machine for trapping the spilled chemical and draining it into a pit in which a pump is located that is automatically engaged to pump the spilled chemical into a closed holding tank. A vapor detecting device will, upon the detection of toxic vapors, automatically turn on a ventilation system that will remove vapors from the area of the trough and from an optional isolation tent surrounding the machine and force the vapors through a filter having a bed of charcoal for absorbing the toxic vapors from the air. The filtered air is then vented to the atmosphere. A splash curtain is also used to direct the spilled chemicals into the trough. A substantial portion of the apparatus may be molded as a single unit or as separate sections that may be readily assembled and fixed into a unit at the installation site.

Abstract: A liquid level control system for automatically stopping the flow of water in a bathtub. The system includes an adjustable level control mechanism and a flow control device. The control mechanism comprises a float suspended from a flexible chain and slidingly mounted in a vertical chamber hydraulically linked to the bathtub. When the float is buoyantly actuated by the level of the water reaching a predeterminedly set height, the flow control device obturates the inlet of water coming from the water supply conduit.

Abstract: A flush control device for controlling the flush operation of a flush toilet having a cistern, a feed water control mechanism fluidly coupled to a water supply pipe and a flush water control mechanism fluidly coupled to one end of a flush pipe, the opposing end of which is connected to a toilet bowl. The flush control device includes a float coupled to the feed water control mechanism for operating the mechanism to stop water supply as the float reaches a predetermined water level. At the end of the flush operation, the descent of the float will operate the flush control mechanism to end the flow of water from the cistern to the flush pipe and operate the feed water control mechanism to supply water into the cistern again.

Abstract: A liquid level control in a refrigeration system operates a solenoid valve to maintain the level of liquid refrigerant in a vessel within a range defined by predetermined lower and upper liquid levels, sounds an alarm if the upper level is exceeded and stops a pump if the lower level is violated. The control comprises a float assembly and a switching assembly. The float assembly comprises a float chamber connected to the vessel, a float ball therein, a vertically extending float rod connected to the float ball and movable along a vertical path, and a pair of spaced apart stop members on the float rod disposed within the switching assembly. The switching assembly comprises a switch actuator permanent magnet, having magnet poles at opposite ends, slidably mounted on the float rod between the stop members and movable thereby along the said path.

Abstract: The present invention discloses an apparatus for monitoring the level of a liquid such as water in a reservoir of a water cooling tower or the like wherein it is required to maintain a predetermined desired liquid level and for generating a first control signal for controlling the addition of make-up liquid to the reservoir and a second control signal for terminating the addition of liquid to the reservoir. The apparatus includes a float chamber having it bottom coupled to the reservoir for equalizing the water levels therebetween. A float is positioned within the float chamber for rising and falling with the level of monitored liquid therein. A float rod extends vertically upward from a central portion the float for movement therewith. A lever housing is fixedly secured in an intermediate position within the float chamber, and the lever housing pivotally mounts a lever member therein. The lever member has a long lever arm and a short lever arm.

Abstract: An apparatus for automatically selectively introducing successive samples of a liquid from at least one pressurized line into a receiving funnel having an outlet port and at least one inlet port. The receiving funnel has main receiving chamber for receiving liquid samples and a sensing device is also provided in the receiving funnel for sensing the level of liquid present in the receiving funnel for controlling flow in and out of the funnel.

Abstract: A printing press liquid circulation system of the type wherein the liquid is circulated in a closed path to and from one or several fountain pans of the press by means of a pump. The system is characterized by the provision of an upright filter chamber, the lower section of which is connected to the suction side of the pump, said chamber being provided with a filter medium intermediate its ends, the return conduit of the fountain paths opening in the upper section of the filter chamber above said filter medium. A liquid make-up and proportional mixing system is provided to maintain at a predetermined level the liquid in the lower section of the filter chamber. Air cannot enter the liquid and, therefore, the formation of foam, either in the fountain path or in the pump and filter chamber lower section, is prevented. Preferably, the discharge of the pump is connected to a heat exchanger to maintain the liquid at the required temperature.

Abstract: An overflow valve system (10) comprises a tubular housing (12) having a J-shaped pipe fitting (14) mounted therein having an injection nozzle (24) at a first pipe-fitting end (26) located in a housing bore (40) of the tubular housing near the bottom thereof for injecting liquid axially upwardly in the housing bore and having a second pipe fitting-end (30) located outside of the tubulary-shaped housing (12). The injection nozzle has female threads therein for meshing with male threads of a toilet-flush ballcock (18), said threads meeting national standards for threads on ballcock shanks and nuts for water-closet bowls, tanks and urinals whereby a standard water-closet ballcock can be sealingly mounted in the overflow valve system by screwing it into the nozzle for controlling the flow of water through the pipe fitting into the bore.

Abstract: An improved method and apparatus for automatically monitoring the level of water in a swimming pool, or the like, by monitoring the level of a float within a float chamber supported by water siphoned from the pool system, for detecting when the level of water has fallen a predetermined amount or distance below a predetermined desired level and for controlling the input of fresh water into the pool system in response to the detected level for restoring the water in the pool to the predetermined desired level as determined by the position of the float on the siphoned water within the float chamber being restored to a float position indicative of said predetermined desired level of water in the pool.

Abstract: A system for maintaining a preselected water level in e.g. a swimming pool comprises a chamber (6) in communication with the pool such that the water level in the chamber corresponds to that of the pool. The chamber contains an adjustable over flow tube (15) and a vertically oriented water supply line (19) having a diaphragm valve (20) and surrounded by an annular float (29), the valve being actuated by a height adjustable overhead actuator bar (23).

Abstract: A water level control device is adapted to be detachably mounted within a swimming pool at the desired water level. A float controlled valve is mounted within the housing which is responsive to changes in the water level of the swimming pool and which is provided with a water inlet and outlet located outside of the housing so as to prevent turbulence within the housing. A suitable air vent is provided adjacent the top of the housing above the water line and restricted water inlet apertures are provided adjacent the bottom of the housing below the water level to maintain the water level within the housing at the same level as the water level in the pool.

Abstract: An auxiliary float chamber is provided for use in a cistern. A float operating in the chamber controls a valve allowing water into the cistern. In the floor of the chamber there is a syphonic tube. The chamber is held to the cistern wall by means of the valve which is of the type comprising a sliding tube sealing against a washer in a sealing cap so that the seal is not against the pressure of the inlet water. The auxiliary float chamber is mounted below the normal level of liquid in the cistern. As the cistern is discharged, the valve remains closed until water has drained from the auxiliary chamber. Water flowing into the cistern is thus not short-circuited through the discharge.

Abstract: The invention represents an evaporation and/or precipitation measuring equipment, which can measure with high-accuracy, continuously and automatically the evaporation of an open water surface and simultaneously eventual precipitation. The value of evaporation, which is defined as the decrease of the water level of a standard evaporation measuring vat, is measured by the equipment with the quantity of water necessary to compensate the original level. Precipitation on the other hand is measured with that quantity of water which needs to be let out in order to restore the original water level of the vat. The high accuracy can be obtained on the one hand by adjusting deliberately small feeding resp. lower quantities. On the other hand the sensing unit of the equipment watches the water level of the evaporation measuring vat with high accuracy, and controls the supply and lower units respectively when the level varies due to either evaporation or precipitation.

Abstract: An improved water-level control method and apparatus automatically maintains the water level in a pool by selectively filling or draining water as required during the period that the circulating system is not operating.

Abstract: A flood control arrangement for dishwashers in which the in-flow to the dishwasher tub from the water supply line is automatically terminated in the event the tub water rises to a flood level. The arrangement includes a sealing plunger disposed in a plunger body member housing installed downstream of the water fill valve. The sealing plunger tends to be moved to the sealing position by the line water pressure to shut off in-flow to the dishwasher but is blocked from movement to this position whenever the water level is below the flood level by the stem of a float positioned in the dishwasher tub. When the water level in the tub approaches the flood level, the float rises in the tub to a position whereat the float stem releases the sealing plunger to allow it to move to the sealing position and shut off further flow to the dishwasher.

Abstract: The device is especially intended for a pipe supplying a fluid which must be supplied, simultaneously or alternately, with another fluid. The device comprises a tank for a control fluid which surrounds the vertical supply pipe and in which a permanent magnet moves in accordance with the amount of control fluid contained in the tank. The magnet shifts a valve member inside the supply pipe so that the valve member closes the latter in one of the end positions of the magnet. The magnet is rigid with a float which freely extends around the supply pipe. The device can in particular ensure that fuel is supplied to an engine only if oil is supplied to the latter.

Abstract: Improvements are disclosed for a float valve of the type including a main valve that controls an inlet port, a control chamber having a bleeder port and a pilot valve member unitary with a float to control the bleeder port and thereby adjust pressure in the control chamber for regulating actuation of the main valve. In order to increase the float cycle of the valve, a water reservoir is formed by the float for receiving water and increasing weight of the float while the valve is actuated during each float cycle, the reservoir including vent means for emptying the reservoir when the valve is deactuated in order to then reduce the weight of the float. Additional improvements are provided to facilitate operation of the valve.

Abstract: A level control arrangement for dishwashers in which the inflow to the dishwasher tub from the water supply line is automatically terminated when the water level in the tub reaches a predetermined level. The arrangement includes a two-stage level control valve disposed in a valve housing installed downstream of the water fill valve. The valve is moved into and out of engagement with the valve housing in response to a connector which in turn is in operative engagement with a stem of a float positioned in the dishwasher tub. When the water level in the tub approaches a predetermined washing level, the float rises in the tub to a position where the connector permits the valve to move to a sealing position, thereby terminating further flow to the dishwasher tub. When the water is drained from the tub, the float stem moves the connector thereby releasing the pressure exerted against the sealed valve through a port located within the valve.

Abstract: Fluid is withdrawn from plural fluid-filled tanks via respective outflow conduits leading into a common mixing conduit which includes a mixing pump, and then branches off through respective inflow conduits for return of intermixed fluid back to the individual tanks. Each inflow conduit is provided with a valve unit comprising a vessel-like housing having an inlet port and an outlet port. The flow from the inlet port to the outlet port is regulated in dependence upon the height of fluid in the respective tank. The fluid height is sensed indirectly by sensing the height or pressure of fluid in the interior of the vessel-like housing, the latter being at least partly lower than the height of fluid in the respective tank. Thus, the return of fluid into each tank is regulated to maintain a respective fluid height therein independently of the other tanks.

Abstract: A liquid level sensor for determining the fluid level in a container and for controlling a fluid inlet to the container in response to the fluid level therein. The sensor includes a buoyant liquid-filled flexible conduit or liquid-filled hinged pipe member in the container and a pressure transducer responsive to the head pressure of the liquid in the flexible conduit or hinged pipe member.

Abstract: A fuel carburetor structure is shown having a main fuel bowl or reservoir with a second fuel reservoir therein; a fuel inlet valve assembly for controlling the rate of fuel flow to both the main and second or auxiliary reservoirs is shown as having a needle-like inlet valve positioned by a float carried within the main reservoir and responsive to the level of the fuel contained therein; additional valving means resiliently resists the flow of fuel into the main reservoir and the degree of such resilient resistance is reflective of the degree to which the needle-like inlet valve has been moved toward its fully closed position; the additional valving means also serves to cause a flow of fuel from the needle-like inlet valve to the auxiliary reservoir via related conduit means.

Abstract: A control chamber of a float valve is formed in part by a diaphragm which is integral with an elastomeric main valve member that opens and closes the supply port of the float valve. A small tube to supply water to the control chamber is mounted in the main valve member and extends upward through and beyond the supply port. The upper end of the small tube tapers to an inlet opening that is sufficiently restricted to keep large solid particles out of the control chamber. The control chamber has a lower bleeder port which is controlled by a fixed upright pilot valve member on a float. A hood integral with the bottom wall of the control chamber extends downward to form a float chamber enclosing the float, the hood having ample vent ports for siphon prevention. Water is discharged from the bleeder port into an expansile chamber, the outlet of which is sufficiently restricted to cause the expansile chamber to depress the float thereby to increase the volume of water released on each float cycle.

Abstract: A float valve arrangement is disposed in a mixing condenser that is arranged intermediate the first and second stage of a two-stage evaporation installation suitable for purifying radio-active liquids. In normal operation, vapor evaporated in the first stage extends via a first conduit into the mixing condenser where such vapor is condensed by contact with a portion of the liquid in the second stage that is circulated back to the mixing condenser via a pump. The normal vapor pressure generated in the first stage keeps the float valve open and permits the steam to displace, into the second stage, liquid present in the mixing condenser. During start-up and shutdown of the installation wherein vapor from the first stage is no longer present, the resulting rise in liquid level in the mixing condenser causes the float valve to close and to prevent any backflow of liquid into the first stage via the first conduit.

Abstract: Apparatus to maintain the desired water level in a swimming pool includes a stilling chamber receiving pool water from an equalizer pipe connected to the pool essentially below the desired water level. The stilling chamber is located externally of the swimming pool at the same general elevation as the desired water level so that a water level detector in the stilling chamber will open a valve in a water supply line to supply make-up quantities of water to the swimming pool to maintain the desired water level therein. In one form, the detector includes a plurality of probes extending downwardly within a secondary stilling chamber member located within the main stilling chamber. A relay unit receives an electrical signal when the detected water level falls below a desired water level to open a solenoid-operated valve located in the water supply pipe. In the second embodment, a valve assembly in the stilling chamber is mechanically operated by a float connected by a control arm to the valve assembly.

Abstract: An improved liquid level regulator is associated with the reservoir of a degassing stage of an evaporation installation wherein a pump connected to the output of such degassing stage is effective to propel the distillate at an ideally constant rate out of the degassing stage to a suitable utilization device. A feedback path is connected between the pressure outlet of the pump and the suction input thereof via a float valve. The float valve communicates with the degassing stage in such a manner that changes in the distillate level of the degasser reservoir effect corresponding changes in the liquid level of the float valve, whereby a constant level of such distillate in the reservoir of the degasser is maintained.

Abstract: Condenser apparatus for removing moisture from the air including a housing for the condenser apparatus, which housing has both a cooling liquid inlet and an air inlet at one end. Within the housing is a condensing chamber and a rotatable disc spaced inwardly from the liquid inlet so that when the disc is rotated and liquid is impinged upon the disc a cooling liquid droplet cloud is produced in the condensing chamber. At the opposite end of the condenser housing from the inlet is an air outlet and a concentrically positioned rotatable blower. Located between the blower and the rotatable disc is a rotatable liquid droplet interceptor wheel for collecting entrained liquid droplets before they pass into the blower and depositing them into an underlying bath. Circumferentially around the interceptor wheel is a liquid pump that removes liquid from the condenser apparatus. An electric motor is utilized for rotatably driving all of the rotating elements.