Abstract: An apparatus and method for changing the antifreeze in a vehicle requires only a garden hose and opening of the radiator cap. Water from the hose is utilized to prime a conduit for siphoning used coolant from a side tank radiator and for refilling the radiator. By operating the vehicle with fresh water in the radiator, coolant remaining in the system is mixed with the water, and repeated drainings decrease the remaining used antifreeze by about one-half each time. After removal of the desired amount of antifreeze, new antifreeze may be placed in the radiator.

Abstract: Disclosed is a heat accumulation tank system intended for use as a heat source of, for example, an air conditioner and which is installed, for example, in a building or under a green zone, a stadium or a parking area. The heat accumulation tank system is composed of a pularity of water tanks which are connected through a communication passage such as a communication pipe. The pressure in the communication passage is controlled by means of a pressurizing device or a vacuum device, so that the state of communication is controlled such as to establish or interrupt the communication between the water tanks or to control the rate of flow of water between these water tanks.

Abstract: A device is provided for draining ground in depth. Each drain includes a tube having perforations in its middle part (1) with solid walls and closed at its lower part so as to form a cup (2), and with solid walls and open at its upper part (4). A siphoning tube (6) is permanently immersed by its lower part (3) in the cup (2), rises inside the tube (1) and leaves through a side duct (5) to drop down again towards an outlet (8). The outlet (8) is at the same level as the upper edge of the cup (2) so that the end (3) of the pipe (6) is always immersed and so that the siphon cannot be unprimed even during a dry period and requires no intervention.

Abstract: A vehicle fuel tank in which the tank bottom has a protrusion so as to provide a space for accommodating the frame and other parts of the vehicle under the fuel tank, the protrusion defining a plurality of compartments in the fuel tank. An overhanging siphon having an opening in the top thereof provides communication between compartments. A fuel inlet pipe and a fuel suction pipe are communicated with a first compartment so that the supply of fuel into the fuel tank and the suction of fuel from the fuel tank are conducted through the first compartment. A valve such as a float valve is provided on the siphon opening.

Abstract: A conveyor belt dewatering system in which a siphon tube or pipe is vertically moveable on a tubular support whereby selectively its inlet is lowered into a conveyor belt. Counterweights counter the weight of the siphon tube, these weights being positioned in the tubular support. A source of service water is turned on by a float switch sensing water is the conveyor belt, the service water being used to submerge the weights and lessen their effect and at the same time be supplied to the siphon tube to increase its weight, whereby a siphon tube is lowered into the conveyor belt and siphoning from it commenced.

Abstract: For use with a hydrocarbon-fueled furnace whose secondary heat exchanger so cools the combusted gas as to condense much of its water vapor, and having a blower to the flue, a combined trap and drain is provided for the condensate formed both in the heat exchanger and in the flue. At the base of the flue is a standpipe whose upper overflow outlet is connected to a dip tube. Between the level of its lower end and the overflow level is a side inlet into the standpipe, connected to a tube leading downward from the heat exchanger's condenser. When the furnace blower applies both negative pressure to the condenser and positive pressure to the flue, the water levels in the trap and tube adjust to balance out these pressures.

Abstract: The partial vacuum produced at the inlet passage of a vortex chamber is employed to move liquid from one compartment to another in order to maintain the level of liquid in at least one of the compartments within a predetermined level of the liquid in the other compartment. In one embodiment, the vortex unit or other suction means develops a partial vacuum at the maximum height of a siphon tube extending between the two chambers, the vacuum drawing fluid from both or at least one of the chambers to the top of the tube thus initiating siphoning. A sump pump having a negative pressure insufficient to lift the liquid to the maximum height of the siphon tube is employed to deliver liquid to a load and concurrently to the vortex unit to establish the required partial vacuum to initiate siphoning.

Abstract: A hydraulic memory device has two elongated passages for liquid, an input member connected with upper ends of the elongated passages for liquid supply into the latter, and two output members each connected with a lower end of the respective passage, wherein the output members are formed so that a portion of liquid supplied in a preceding step remains in one curved output member, and during a subsequent step of liquid supply the liquid will flow into an elongated passage provided with the other output member.

Abstract: A temperature actuated drain system is provided that comprises a siphon that has an inlet end for immersing in a pool of water to be drained from a roof surface and a discharge end communicating with a pressure-responsive one-way valve. A solar actuated enclosed chamber that contains a solar heat energy collector is located on the roof surface and is in open communication with the siphon by means of a tubular member that has its inlet end positioned closely adjacent the bottom of the interior of the chamber. The arrangement causes any appreciable amounts of water that accumulate within the chamber to be discharged from the chamber during the pumping action created by the heating and cooling of air within the chamber.

Abstract: A swimming pool siphon for draining above the ground swimming pools. The siphon is comprised of a generally U-shaped tubular construction having two legs connected by a top bight portion restable upon a top edge of the side wall of the swimming pool. The leg ends are supportable upon the ground and the pool floor and have removable closure caps while a fill cap is provided upon the bight portion. A pool leg may also be provided with a flattened end to drain water closely to the pool floor. After filling the fill cap is closed and siphoning commences upon the removal of the closure caps. The drain leg may be bent or rotated for use with in ground swimming pools and leg extensions may be added as needed.

Abstract: A device for transfer of critical liquids, such as molten metals, has a body member including a short leg inlet liquid conveying passage submergeable in a large storage vessel containing the critical liquid. An intermediate high level liquid conveying passage is disposed over the vessel and connected in fluid transferring relationship to the inlet portion at one end, and at its other end to a long down leg passage which is connected to a smaller liquid storing chamber positioned substantially lower than the liquid level in the storage vessel. A pouring outlet is connected to the lower chamber to conduct liquid out of the lower chamber. The flow of metal is controlled by a vacuum source selectively connectable to the high level passage which causes a siphon action through the device. The lower chamber is adapted in cooperation with its storage vessel, to maintain a vacuum in the system during start up and the transfer of liquid from the storage vessel to the outlet.

Abstract: Apparatus for siphoning liquid such as water which accumulates in a ponding area (16) located on a flat roof (12) to a drain (14) is disclosed. The apparatus includes a first liquid conduit (21) which has one end (58) in the accumulated water and a second end (52) in drain (14). A reservoir (26) (64) accumulates a selected volume of water which is transferred from the reservoir (26) (64) by a second liquid conduit (38) to the first liquid conduit (21) such that the first liquid conduit (21) is completely filled with water suitable for initiating siphoning action of the water in ponding area (16) to drain (14). A means for controlling the flow of liquid from reservoir (26) (64) to first conduit (21) such as float valve (36) is included such that there is no transfer of liquid from reservoir 26 to first liquid conduit 21 until the selected volume of water has accumulated.

Abstract: A rinsing tank in a developing machine for X-ray films or the like is equipped with a circulating system which draws liquid from the bottom zone of the tank and returns the withdrawn liquid to the upper zone of the tank. The contents of the tank can be evacuated without resorting to any values by using a siphon whose intake end is connected with the suction side of a jet pump in the pipeline for circulation of liquid, the uppermost section of which is located at a level below the normal level of the upper surface of the body of liquid in the tank, and the discharge end of which is connected with a liquid removing pipe. When the pump which causes the liquid to circulate by flowing through the pipeline is arrested, the jet pump is deactivated and allows the liquid in the siphon to rise and to flow into the uppermost section. The liquid thereupon continues to leave the tank in the form of a continuous stream which flows along a second path defined by a portion of the pipeline, the jet pump and the siphon.

Abstract: Steam cleaning equipment comprising a water reservoir incorporating steam and water inlet ports and steam and water outlet ports arranged to supply steam at a controlled pressure and water in predetermined quantities to a hand piece where they are mixed in a venturi nozzle.A steam pressure reducing valve in the reservoir is immersed in the water and operated by steam pressure on a piston which has no sealing rings but which condenses steam leaking past the piston and passes the condensate into the reservoir.Detergent metering means and anti-siphon provisions are also described.

Abstract: The invention provides a siphonic apparatus to effect irrigation of a field from a water supply. The apparatus comprises a bridging structure which includes a chassis fabricated from spaced longitudinal bottom members, spaced longitudinal top members interconnected by cross members, vertical struts, diagonal braces and side plates to form a rigid structure having a central elevated section and downwardly angled end sections, the ends of which being on substantially the same plane as the surface supporting the chassis.At least one siphonic tube is rotatably, transversely supported in the chassis.

Abstract: Apparatus for intermittently supplying a predetermined quantity of water at regular, predetermined intervals comprising: a water tank for accumulating and storing water; water feeding means and inlet valve means; float-actuated valve means within said water tank; a down pipe connected to said water tank and terminating in a tapered tube; a siphon tube from said water tank terminating in a tapered tube which extends together with the tapered tube of said down pipe into a venturi outlet; and, an ejector tube extending downwardly from said venturi outlet.

Abstract: An apparatus for removing water from a ponding area of a flat roof having a run-off system which is no longer operable to drain water from the ponding area which comprises a structure for directing a quantity of the run-off water flowing in the run-off system as a result of the commencement of a rain condition or the like into a priming chamber, a structure for displacing water from the priming chamber back into the run-off system in such a way as to establish a negative pressure condition within the priming chamber, and a structure for communicating the negative pressure condition to an end of a siphon hose at a vertical level below the level of the ponding area, the other inlet end of which is disposed in water sucking relation to the ponding area to thereby prime the siphon hose and commence the flow of water from the ponding area which flow after the cessation of the rain condition or the like continues until the water is substantially removed from the ponding area.

Abstract: A method for removing water from a ponding area of a flat roof having a run-off system which is no longer operable to drain water from the ponding area which comprises directing a quantity of the run-off water flow in the run-off system as a result of the commencement of a rain condition or the like into a priming chamber from which run-off water is allowed to discharge into the run-off system at a rate less than the rate of flow of run-off water into the priming chamber and effecting a siphoning action as a result of the diminishing of the flow of run-off water in the run-off system as by the cessation of the rain condition so that the quantity of run-off water flowing into the priming chamber is less than the quantity flowing out thereby lowering the water level within the priming chamber and creating a suction action which is utilized to commence the movement of the water in the ponding area through the siphon device hose which movement continues until all of the water in the ponding area has been sucked u

Abstract: A siphon system in which an enclosed container has a chamber for heating a gaseous fluid as by solar radiation. The chamber is in continuous open communication with a siphon having an inlet at an upper level and an outlet at a lower level. A pressure responsive valve is located at the outlet for permitting the release of gaseous fluid at pressures over atmosphere and closing the outlet to communicate pressures below atmosphere to the inlet to start the siphon. When the siphon is filled, the pressure responsive valve opens to release the liquid from the outlet. A float valve may be used at the inlet to retain a below atmospheric pressure in the system for immediate operation when the liquid accumulates at the inlet.

Abstract: An enclosed container has a chamber in which a gaseous fluid is heated as by solar radiation and a first valve permits some of the fluid to be ejected as it expands during heating. The remaining fluid is then cooled as by clouds blocking the sun or during the night and a subatmospheric pressure is developed in the chamber. Through a second valve in the container this negative pressure is communicated to a siphon having an inlet immersed in liquid at an upper level and an outlet closed by a third valve at a lower level. The subatmospheric pressure causes the siphon to be filled with liquid and the weight of the liquid opens the third valve at the outlet causing the siphon to operate. The second valve prevents the loss of subatmospheric pressure in the siphon. The siphon may be used to automatically drain water from areas such as flat roofs of buildings.

Abstract: An aquarium filter comprising a siphon housing assembly and a filter holding tank assembly. The siphon housing assembly supports a pump assembly which functions to draw water from the aquarium through the siphon housing assembly and to pump the water to the filter holding tank assembly. The pump assembly utilizes a centrifugal impeller to pump the water through a pump outlet to the filter holding tank assembly. In addition, a venturi outlet is provided in the pump assembly near the pump outlet which produces a venturi vacuum to siphon water from the aquarium and through the siphon housing assembly.The pump assembly pumps water from the siphon housing assembly into a filter bag situated in the filter holding tank assembly. The filter bag is porous and coated inside with diatomaceous earth for removing impurities from the aquarium water. The filter holding tank assembly includes an overflow return area for returning the filtered water to the aquarium.

Abstract: The present invention comprises apparatus for initiating a fluid flow within a siphon tube from an aquarium to its associated filter tank. The novel apparatus comprises the addition of a vacuum duct with an upturned fluid trap to an otherwise conventional siphon tube; the detachable attachment of a siphon bulb to the trap outlet of the vacuum duct while both the aquarium and filter tank are full, with the filter tank pump being in an 37 off" condition; the squeezing of the siphon bulb in order to exhaust air from said bulb and ultimately out through the aquarium tank. The bulb is then released, thereby creating a pressure differential within the siphon tube which will cause the air within said tube to be drawn into the bulb. The removal of the trapped air within the siphon tube, and from the vacuum duct and its trap, will cause fluid to fill the siphon tube, and vacuum duct.

Abstract: An improved "blow bottle" for forced expiration exercise wherein liquid is blown from one container to a higher container and then automatically returned to the first container when filled by a siphon whose priming operation is facilitated and rendered more reliable by an umbrella check valve.