Abstract: A portable lawn sprinkler comprising a housing assembly having means defining a fixed horizontally extending water inlet having a female hose fitting on the exterior end thereof and a spaced fixed annular wall providing an interior periphery defining an annular vertically opening water outlet. A speed reducing unit is mounted within the housing assembly. An impeller is drivingly associated with the input shaft of the speed reducing unit in a position to be rotated by water under pressure flowing from the inlet to the outlet. A rotary water distributor is fixed to the output shaft of the speed reducing unit disposed in water communicating relation with the outlet. An annular member is mounted for axial movement within the annular water outlet and in surrounding relation with the output shaft and has an exterior periphery disposed within the interior periphery of said fixed annular wall.

Abstract: An air-assist fuel injection nozzle has an externally actuated plunger journaled for axial movement in the cylinder provided in a nozzle body. The plunger tip contains a central stepped bore which slidably supports a spring bias injection needle valve therein. The plunger, when it is in a raised position, allows a valve controlled supply passage to deliver a metered quantity of liquid fuel into a chamber defined by the cylinder and the valve and of the plunger. The cylinder at the chamber end is closeable by a gas valve disk which in turn has a central aperture defining a discharge passage flow through which is controlled by the inward opening injection needle valve.

Abstract: An electrostatic powder spray gun comprises a powder cup and is constructed such that the powder cup comprises a removable cover which is secured to the pistol tube of the gun in an easily-detachable manner, whereby a conveying tube and an air tube extend through the cover and are held thereat. The air tube projects beyond the cover and, given the cover secured to the pistol tube, projects into a spring-loaded discharge valve of the compressed air feed line and thereby holds the same in the open position against spring pressure. Given the cover secured to the pistol tube, the orifice of a powder channel extending in the pistol tube is constructed as a connection for a powder feed line leading from a remote powder preparation system.

Abstract: A dump truck body capable of dumping to either the right or left side or to the rear of the truck. The truck further includes a sand, salt or gravel spreader fed by a longitudinal auger running longitudinally from the front to rear of the truck body on either the left or right-hand side. The auger is fed by the side tilting of the dump body. The overall height of the truck is maintained at a minimum while in operation through the utilization of side-tilted spreading, as opposed to rearward-tilted spreading.

Abstract: An air fertilizer spreader mounted on a truck chassis, the truck chassis carrying a granular or pulverized fertilizer application machine. Right and left booms swing from a midship position between a truck cab and fertilizer box back towards the rear of the truck chassis. Each boom includes a plurality of boom tubes with deflectors. Rear boom tubes are also provided at the rear of the truck chassis. A screw conveyor carries fertilizer from the fertilizer transport box to an area forward of the fertilizer transport box where the fertilizer falls into opposing metering assemblies for the right and left boom. Air, acting through particle accelerators carries the fertilizer from the metering assembly to the entrance of the boom tubes, and a second particle accelerator provides additional air flow to carry the fertilizer down the length of each of the boom tubes to the point of discharge.

Abstract: A process and apparatus for generating multiple spirally convergent/divergent fluid jet streams and an improved process and apparatus for generating particulate containing fluid jets wherein at least one discontinuity generator is provided to create fluid instabilities, enhancing entrainment and acceleration of particulates in the fluid jet stream and providing uniform distribution of accelerated particles over a large surface area.

Abstract: A water drip device used for providing intermittent or continuous watering of row crops, such as vegetables, fruits and other plants and enhancing crop growth. The water drip device is made of plastic tape adapted for burial along the length of a crop row. One end of the device is connected to a main water supply source, and the device is constructed to provide water at a reduced water pressure so that water drips or weeps into the ground adjacent a plant or plant seed to avoid soil erosion and plant damage.

Abstract: A two-dimensional thrust vectoring nozzle (10) includes aftward divergent flaps (26, 28) positioned by a linkage assembly (38). The assembly (38) includes a linear track (42) pivotable about a transverse axis (44) for positioning a scissors linkage pivot (52) to selectively vary the divergence angle and vertical thrust vector of the nozzle (10).

Abstract: In the case of rotary atomizers, especially those having external electrodes on a grounded spray head, there is a danger of self-contamination of the front part of the atomizer housing; the latter is, therefore, provided with a rotating cover (10) which may be connected to the rotating spray head (2).

Abstract: An internal mix, air-assisted, airless atomization, plural component spraying system includes a source of resin; a source of catalyst for the resin; a spray gun to mix the resin and catalyst and direct the mixture as a spray to a substrate; and a source of compressed air to assist in atomization of the mixed resin and catalyst. The spray gun includes a mixing apparatus and an atomizer including a liquid nozzle for forming the mixed resin and catalyst into a fan-like film with expanding edges extending from a liquid orifice, and an air nozzle for forcing a flow of compressed air to converge at an elongated air orifice and expand in a fan-like flow.

Abstract: Compressed air and water are mixed, and are accelerated to a jet of high velocity within a cylindrical, non obstructive device; the explosive decompression of compressed air to atmospheric pressure within a diverging exit nozzle disintegrates the jet of water into a jet of tiny droplets which freeze in contact with colder atmospheric air to ice crystals of snow.

Abstract: A jet engine nozzle operable in a cruise setting and a noise attenuation setting. In the cruise setting the nozzle provides simple through flow. In the noise attenuation setting some ambient flow is ducted into the through flow and some through flow is ducted into ambient flow. The nozzle comprises a fixed portion and a movable portion, rotatable a part of a revolution about the fixed portion. The nozzle comprises two rotary valves which operate in unison, a sleeve type valve and a face type. The sleeve type comprises cooperating lobed openings in the fixed portion and in a forward segment of the movable portion, the movable portion fitting telescopically over the fixed portion. The rotary type comprises the exit faces of aft facing lobes in the fixed portion and cooperating entrance faces of lobes in the aft segment of the movable portion. In the attenuation setting both valves are open.

Abstract: An emitter for receiving water from a trickle irrigation system and emitting the received water at a trickle flow rate to an area to be irrigated. The emitter includes a float controlled water inlet shutoff valve for receiving water from the trickle irrigation system and supplying it to a housing to establish a water supply therein and maintain the water supply at a predetermined substantially constant level above at least one water outlet opening of predetermined size formed in the housing to provide a pressure head which interacts with the size of the water outlet opening to determine the trickle output flow rate of the emitter.

Abstract: A nozzle apparatus and method for electrically charging and dispensing fluids and other flowable materials, comprising a fluid reservoir and a housing. The housing includes walls which define a chamber having an elongated slot at the tip thereof. The slot is resiliently compressible. The reservoir communicates with the chamber such that the fluid is introduced into the chamber at a controlled rate and a low hydrostatic pressure. A shim is placed within the chamber slot partially occluding fluid flow through the slot. The shim and the amount of compression of the slot defines with precision the size and shape of the slot. The shim and fluid are electrically connected to a high voltage source through the housing. The fluid forms a meniscus about the housing slot whereby upon actuation of the high voltage source, the fluid is dispensed as one or more charged fluid paths or a plurality of charged droplets.

Abstract: A retrofit sprinkler system is installed into existing structures by means of a bracket which is mounted on the existing walls adjacent the ceiling to support flexible sprinkler pipe and related utilities. The bracket has a wall-mounting flange, front and bottom flanges for mounting a facade and soffit, and a central support opening. The support opening may be a closed circle or an open J-shape. In one embodiment the front flange may be adjustable toward and away from the existing wall to correct for irregularities in the existing wall.

Abstract: An ultra-high-pressure rotary water-jet gun capable of removing rust, scale, burrs, paint film and other unwanted deposits from the surface of metal, concrete and other materials. An air turbine serves to rotate an eccentric rotor within the gun housing. A high pressure water line passing through the rotor is connected to a nozzle head on which are mounted several nozzle tips. The nozzle head is rotated in a circular path by the eccentric rotor while directing the high pressure water jets against the work piece. A pneumatic circuit and a hydraulic circuit with certain controls are provided.

Abstract: A method of making artificial snow by mixing water with a water swellable polymer, preferably polyacrylamid, to approximately 50%-70% of the maximum water retention capacity of the polymer, aerating the mixture and freezing the mixture to produce snow crystals. The snow crystals are laid on a refrigerated floor to form a skiing slope.

Abstract: A bottle for a volatile liquid contains a wick and a wick carrier that are retractable to the extent that a cap can be placed on the bottle. An insert cup in the mouth of the bottle has a bottom opening traversed by the wick and the wick carrier. In the retracted position, the previously extended wick is folded into the space within the insert cup.

Abstract: A spray system, including a nozzle unit composed of a pair of plates facing each other, plural spraying nozzles provided on the plates and a distribution manifold having plural chambers. A branch outlet of each chamber is interconnected to a spraying nozzle through a tube. A plurality of atomizers are mounted on a manifold base supported by a supporting member. The nozzle unit is held by jointing the manifold to the manifold base through a joint in a detachable manner. Different kinds of mold release agents, and an antiseize device or water is supplied to each atomizer and each atomizer is connected to a corresponding chamber.

Abstract: A spray bar having a plurality of nozzles and an elongated header for spraying liquid. The header is made up of a top, intermediate and bottom plate. Between the top plate and the intermediate plates are defined a plurality of independent fluid passageways coupled to individually controlled fluid operated valves having each nozzle assembly. Between the intermediate plate and the bottom plate is a liquid cavity. The nozzle are mounted in openings in the bottom plate and sealingly cooperate with the intermediate plate and extend through the liquid cavity. The flow of liquid through each of the nozzles may be independently regulated by varying a control fluid signal to enable the liquid in an application rate to be varied axially along the header.