Abstract: A shrimp bait container is disclosed which includes a plurality of stacked trays, with each tray storing live shrimp bait in a water medium. Each tray is substantially a frusto-pyramidal shaped housing having four sides and a bottom, composed of a relatively thick, thermally insulating material. The sides extend upwardly and outwardly from the bottom and are inclined so that the outer surfaces thereof for an upper one of the trays will mate with the inner surfaces thereof for an adjacent, lower one of the trays, forming an enclosed volume for storing the water medium containing the shrimp bait. The bottom of each tray has a perforation therethrough. An adjustable water depth controlling pipe is slideably mounted in substantial vertical orientation in the perforation in the bottom of each housing, having a height above the bottom which can be vertically adjusted and through which water within the enclosed volume may overflow, thus defining the depth of the water.

Abstract: Oil sludge (15) formed within a storage container (10) is removed by penetrating tubular lances (20) into the sludge body (15) and then pumping dispersant chemicals borne by a water jet through the lances (20) into the sludge body (15) with continuous drawing off and recirculation of emulsified fractions under pressure. The sludge body (15) breaks down both physically and chemically to form a pumpable fluid which is drained and mixed with a larger volume of liquid oil to allow dispersion of the hydrocarbonaceous content of the emulsified fluid as a suspension in the oil volume allowing the water to settle out of the mixture, the settled water layer being thereafter drawn off. This oil mixture is then processed in the process plant. The dispersant chemicals emulsify or form coloidal suspension or solution of the hydrocarbonaceous content of the sludge body (15) in water.

Abstract: An oil burner of the type of pumping up a fuel oil is disclosed which has a first oil level setting means of an airtight type having an overflow pipe means constantly immersed at the lower end thereof in a fuel oil to be pumped up to the first oil level setting means and has a second oil level setting means disposed below the first oil level setting means and directly connected to a fuel oil supply tank. A fuel oil supplied from the second oil level setting means is drawn up to the first oil level setting means by a pumping-up means and subsequently supplied through a supply pipe to a combustion means. The level of a fuel oil in the first oil level setting means is kept constant at a position above the outlet end of the supply pipe. The overflow pipe means may be movable in the vertical direction so as to vary only the supply rate of a fuel oil.

Abstract: The first and the second circulation pipe systems are respectively and circularly connected to a tray which a processing solution is supplied into, respective pumps to pump up the processing solution, respective containers which a circulated processing solution is retrieved into, and an over-flow unit to keep the level of a processing solution supplied into the tray at desired level, the over-flow unit being provided to the opening of the bottom of the tray. In the respective circulation pipe systems, valves for switching over between the systems are further provided, alternatively to circulate a desired processing solution by controlling the valves.

Abstract: An automatic film processor is provided with leakage control in the form of a closed loop fluid handling system to provide negative pressure in the processing tanks, a specialized outlet orifice for the processing tanks to maintain fluid level above the film plane, means for providing an inert atmosphere above the chemicals in the system reservoir involving the use of a specialized standpipe, a film drying section which utilizes the cooling fan for the unit, and a specialized multi-negative loading unit.

Abstract: A sewage septic tank system including a septic tank for receiving sewage discharge, a liquid junction box operatively connected to receive liquid discharge from the septic tank, at least one, and preferably a plurality of drainage lines opening into the liquid junction box for discharge and draining of liquid therefrom to a drain field and the like, and levelling caps having eccentrically disposed face openings therein, the caps being adjustably mounted on the liquid inlet ends of the drainage lines whereby the openings can be adjusted to provide for varied and different liquid levels in the junction box, and for controllable substantially even distribution of liquid into the drainage lines.

Abstract: A flow control device adapted for use with a vertically aligned array of storage battery formation tubs, for controlling the fluid level within a formation tub, the flow device comprising a hollow cylindrical member capable of extending vertically between the drain of the formation tub in which the fluid level is to be controlled, and a second formation tub placed thereon; a first sleeve concentric with and slidingly engaging the upper portions of the cylindrical member and adapted to engage the drain of the upper formation tub; and a second sleeve concentric with and slidingly engaging the lower portions of the cylindrical member; wherein the second sleeve includes a first slot extending through the sleeve and to its lower most edge, and is capable of variably engaging second slots extending through the central portions of the cylindrical member to permit adjustment of the fluid level in the formation tub.

Abstract: A generally cylindrical mixing tank for oil well drilling mud circulates the mud passing out of a set of urethane nozzles about an elliptical path in the tank, which is coated internally with urethane thereby to provide a long lasting mixer in the presence of the abrasive drilling mud.New ingredients are entered into the tank directly from bags as they are passed over a cutter knife and across an entry grillwork platform. Water may be added for proper viscosity.The nozzles, by aid of a circulating pump taking mud from the tank, cause the mud to flow in a generally rotary path inside the tank and a set of knives is placed in this path to slice up any lumps or chunks of mud that may form.

Abstract: An accessory adapted to be attached to the drain opening of a sink of a parts washer including an upright tubular housing, having a plurality of drain ports at a lower end thereof. A stopper is selectively movable in said housing from a first position above the drain ports to a second position below the ports by the application of force to a shaft operatively coupled thereto. In the first position of the stopper, drainage of fluid from the sink occurs through the drainage port and the drain outlet. In the second position, fluid is blocked from egress through the drain port and the drain opening of the sink and collects in the sink to a predetermined level whereby a series of overflow drain ports drain excess fluid to maintain a constant level of solvent. The shaft is coupled to a spring urging the stopper to the first position when a force is removed from the shaft.

Abstract: A drain plug of the standpipe type embodying an elongated tubular member for affording drainage when the liquid level in a compartment is at the top of the standpipe, and a resilient, annular valve member mounted on the lower end portion of the standpipe for sealingly engaging a valve seat in a drain opening for preventing flow of said liquid into said drain opening around said standpipe, the valve member having an upper and lower flanged construction that is effective to guard against leakage around and damage to the drain plug if the drain plug is improperly aligned or excessive closing pressures are applied thereto.

Abstract: An improved battery formation apparatus wherein a specially designed overflow/drain plug is provided for directing the flow of fluid out of a water tub used to control the temperature of batteries during the formation thereof. The plug is a combination of a hollow plug member and a collar member fitted around this plug member. The plug member is designed to fit inside the drain opening and extend upward therefrom to control the liquid level in the container, and furthermore, the plug is designed to fit around the bottom of the drain opening to facilitate draining of the fluid from the opening. The plug member has an elongated slot therethrough, and the collar means is slidably fitted around the plug member to adjustably determine the height along the plug member which the fluid must reach before it is drained through the elongated slot.

Abstract: An apparatus for the continuous production of high-purity water includes a distillation flask, a carboy and a condenser unit, all of borosilicate glass. A respective filter, preferably in the form of a polytetrafluoroethylene sheet, is provided between the ambient atmosphere and the interiors of the flask, the carboy and the condenser unit to remove airborne bacteria and dust particles. An inlet valve is provided for feeding water to be purified into the flask, all water-contacting parts of this valve being of polytetrafluoroethylene. The open parts are interconnected with flexible, polytetrafluoroethylene tubing. A two-way, stopcock allows high-purity water to be removed from the carboy. The flask is provided with a glass overflow trap. In one variant, the water is fed into the flask via members between the trap and the flask.

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 heat exchange system is provided which transfers the heat from a fluid discharged from a device that utilizes a heated fluid, to fresh fluid in order to increase the temperature of the fresh fluid prior to feeding it into a heating tank. Thus, less energy is required to heat the fluid in the heating tank prior to its introduction into the device which utilizes heated fluid. After the heat has been exchanged, the discharged fluid is then expelled from the system. A fluid trap controls the fluid level in the heat exchanger to assure maximum heat transfer capability. An antisiphon valve is provided in the fresh fluid input of the heat exchange coil in order to prevent discharged fluid from contaminating the fresh fluid source in the event of a rupture in the heat exchance coil.

Abstract: The rotary drum humidifier is mounted in an opening in the horizontal supply duct of a forced warm air furnace. The humidifier has a built-in manual humidity control wherein an adjustable thermostat is connected in series in the electrical humidifier motor circuit. The thermostat completes the electrical circuit on rising temperature in the duct and senses the peaks and valleys of the modulating duct temperature caused by the furnace heating cycle. When the control knob of the thermostat is set on "high", the humidifier will operate at a greater percentage of the furnace heating cycle and when set on "low" the humidifier will operate at a lesser percentage of the furnace heating cycle.

Abstract: The rotary drum humidifier is mounted in an opening in the horizontal supply duct of a forced warm air furnace. An annular mounting bracket surrounds the opening on the inside of the duct and has a plurality of spaced apart mounting studs extending through holes provided in the wall and surrounding the opening. The humidifier includes a housing having a bottom wall and upstanding side walls forming a water reservoir, with the side walls being provided with horizontally extending mounting flanges having apertures for receiving the studs which are then provided with nuts. A cylindrical porous drum, motor driven, is rotatably mounted in the housing and is adapted to be wetted by the water in the reservoir. Hinge means are provided along one flange of the housing through which a pair of adjacent mounting studs extend.

Abstract: Nutrient feed regulation systems for automatic control of nutrient flow rates in controlled environment agriculture installations utilizing nutrient film techniques. Such control is provided by feed regulators each including means defining a metering orifice of fixed flow area and means establishing a constant hydrostatic head across the metering orifice, thus enabling the maintenance of a constant nutrient flow rate to all plant growth containers in both vertically tiered and horizontally arrayed container configurations.

Abstract: A drip-proof probe characterized by a telescopic stinger adapted to be connected with a closed system, inserted into a shipping container for toxic fluid for sequentially extracting the fluid from the container and delivering the fluid to the closed system, and thereafter employed for rinsing residue from the container, all without subjecting handlers to contamination through spillage or inhalation.

Abstract: A mechanism for selectively distributing liquid flow to at least two separate outlet conduits includes a tank for receiving liquid and at least two tubular members having bellows-like sections mounted in the tank in flow communication with the associated outlet conduits. Actuator devices are connected for selectively compressing or extending the bellows-like sections to determine the elevations of the mouths of the tubular members within, or above, the liquid in the tank to thereby control the flow through the outlet conduits.

Abstract: A self-contained, recirculating flush liquid, type of water closet for passenger aircraft; wherein, the means for periodically draining the contents of the waste holding tank, comprises an inverted U-shaped tube which is separated at the bend of the U-shape or elbow thereof, into approximately two half-parts. These half-parts are joined by a movable or flexible connection in order that one of the half-parts can be moved relative to the other half-part. One end of the U-shaped tube is rigidly fixed to and projects out from the bottom of the tank; and the other movable half-part has an intake nozzle opening which when it is positioned at the bottom surface of the tank, it is at an operative waste removal position, and when it is moved to a raised position where the intake nozzle opening is at the top of the tank, the removal of waste from the tank is prevented.

Abstract: A liquid mixing device for mixing liquids in a mixing tank. The device providing means for mixing liquids such as liquid chemicals that are generally difficult to mix and mixing these chemicals together to form a homogeneous solution. The device is adapted for skimming an unmixed liquid on top of the liquid level with a heavier liquid at the bottom of the mixing tank. Also the device will mix an unmixed liquid at various levels in the mixing tank with a heavier liquid at the bottom of the tank.

Abstract: An adapter for sink drains of varied diameter, with a double seal positioning a standpipe perpendicularly with respect to the sink bottom, there being an upper seal supportably stopped upon the sink bottom or drain flange, and there being a lower seal depressibly engaged within the drain diameter, and characterized by a base of soft rubber-like material smaller in diameter than the drain and integral with upper and lower seals that have flexible fluid tight engagement with the sink and drain while permitting lateral deflections of the standpipe.

Abstract: A device for adjusting the quantity of molten metal used in pressure casting has a pump pumping molten metal up from a supply container to a pressure chamber and to a level-determining tank having an adjustable overflow. Hydrostatic pressure balances the levels in the level-determining tank and the pressure chamber so that adjusting the overflow also adjusts the level of metal in the pressure chamber.

Abstract: A reliable machine for developing film, which minimizes the possibility of damage to the film surface and which provides close control of processing conditions. A film strip is pulled by a detachable member attached at the front end of the strip, and is guided along the machine by rollers spaced along the film path, with each roller having a film-supporting surface at each end and a wide cutaway portion between the film-supporting surfaces so that each roller touches only edge portions of the film. Chemicals in the tank are replenished by a system which includes a plunger that moves down into the tank to cause some of the chemicals to overflow into a drain and which then moves up out of the tank to lower the fluid level therein, and a bottle with an open lower end which supplies chemicals to restore the fluid to its original level.

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 combined service valve and outage indicator for a liquified gas tank, consisting of a valve body engagable in the neck of a liqufied gas container. The valve body has a main screw valve element engagable in a seat in the body to control the flow of gas from the container to a service outlet. The valve element has an operating knob with an indicating pointer overlying a volume scale disc secured on the valve body. Secured to the inlet end of the valve body is a depending cylindrical chamber closed at its bottom end and having spirally arranged holes. A tubular sleeve is rotatably and sealingly engaged in the cylindrical chamber and has a vertical slot or recess registrable progressively with the holes. The top end of the tubular sleeve communicates with a cavity in the chamber leading to a vent passage in the valve body controlled by a screw valve.

Abstract: Apparatus for conveying a viscous liquid from a tank through a supply line to a device to be supplied with such liquid and thence to the tank via a return line, the liquid being heated either in the supply line or in the return line, or both. The apparatus includes concentric conduits extending into the tank and establishing supply and return passages connected respectively to the supply line and the return line. The conduits terminate at different levels inside the tank and the shorter of the conduits carries a sleeve at that end which is inside the tank and which is adjustable from outside the tank so as to vary the effective length of such conduit to enable the lower end of either conduit to extend beyond the lower end of the other conduit.

Abstract: A level control device for pickling, degreasing, nickel-plating baths or the like, comprising at least two baths of different specific gravities, wherein the two baths are joined to a connecting pipe and the connecting pipe runs into the bath of lower specific gravity just below the bath level so that level control is possible without pumps or float switches or the like.