Abstract: Apparatus for precise water and liquid chemical application to agricultural fields is provided comprising a control platform with two motors, each motor driving a separate set of drive wheels. The speed of the first platform motor being selectable, the speed of the second motor being controlled by a variable frequency AC motor controller which receives a signal from a linear position transducer which senses the positional relationship of the control platform to a pre-determined path so as to maintain the platform on a pre-determined path. A second variable frequency AC motor controller receives a signal from a second linear position transducer between the control platform and a plurality of span sections supported by a plurality of motorized, wheeled towers which is operable to maintain alignment between the towers and the control platform, and the span sections are provided with switches operable to switch the motors of the towers on and off momentarily as required to keep them in alignment with each other.

Abstract: The present invention relates to a device designed to be detachably attached to the undercarriage of a lawn mower through the use of hooks engageable with the blades of the lawn mower. The device includes an annulus having a plurality of holes therethrough with a coupling designed to be connectable to a water supply hose. Additionally, a pair of diametrically opposed sharpening stones are rotatably mounted on the device and are automatically rotated through the provision of paddlewheels, each of which is rotated through the provision of water sprayed thereon as supply from two supply conduits. When the hose connection is connected to a hose supplying water to the device and the water begins to flow, water sprays out the openings in the annulus to clean the undercarriage of the lawn mower while water spraying out the supply conduits impinges on the paddlewheels causing the grinding stones to rotate to thereby sharpen the lawn mower blades.

Abstract: A device for increasing the evaporation of liquid from mud pits is disclosed having an elongated collection tank suspended from flotation means for holding a quantity of the liquid. A plurality of riser pipes extending from the collection tank to the surface of the liquid, each of the riser pipes having a nozzle connected to the end thereof capable of converting the liquid into a hollow, conical spray having ultrafine droplets.

Abstract: A modular spraying assembly particularly adapted for use with automatic molding or dye casting machines which is characterized by a plurality of identical sprayhead modules which can be mounted in linear relationship to one another to form variable vertical and horizontal columns accomodating the particular design of a mold or dye which may be sprayed. A support hanger and manifold blocks are provided to communicate a source of air pressure and liquid mold release compound or lubricant to each linear column of spray head modules. Each sprayhead module is mounted in communication with the sprayhead modules forming a given linear column via a plurality of parallel bores which form air and liquid supply passages common to all sprayheads in the linear column and through which tie rods extend to provide a convenient connecting means for any given number of sprayhead modules in the linear array.

Abstract: A paint cup and lid assembly for a spray gun of the type operated from a source of compressed air. A shroud connects the paint cup to the spray gun. The shroud is indexed between a first position which provides for pressure assisted paint feed and a second position which provides for suction paint feed.

Abstract: The fuel injection valve is constructed of a valve body and a single valve needle. The valve needle operates under the pressure of the fuel to move a first distance permitting injection of fuel through the bottom nozzle of the valve body into a combustion chamber and moves a greater distance to expose the remaining nozzles to inject additional fuel into the combustion chamber. The valve needle has a conical end face which sealingly engages a valve seat of the valve body disposed between the respective set of nozzles when in the closed position.

Abstract: There is disclosed a spray tip for airless spraying in which a turret member, which carries the tungsten carbide spray tip, is rotatably mounted in a spray tip housing and is removably and interchangeably received in the housing. The turret member is provided with a dynamic seal which has a seal formed of a very hard plastic, preferably an acetal copolymer that is filled with a reinforcement material, preferably with glass fibers. The hard reinforced plastic resists cold flow and extrusion while, nevertheless, providing a resilient seal that is very effective, even when spraying very low viscosity liquids. Longevity of this seal and ease of rotation of the turret member while maintaining full sealing pressure on the seal is achieved by the cooperative use of a resiliently biased piston support for the seal.

Abstract: A flush hydrant for purging waterline systems of subdivisions, rural districts, etc. The flush hydrant is used in lieu of a typical fire hydrant for purging such waterlines of foreign matter which may have infiltrated the waterline system as a result of line breakage. The flush hydrant includes a barrel generally having an upper portion extending above ground and a lower portion below ground. The hydrant includes a ball valve assembly mounted in the lower portion of the barrel and an operating rod extending above ground from the valve assembly. The rod operates a closure member in the ball valve between open and closed positions. The closure member is provided with a primary passageway to direct water into the barrel and out of a nozzle secured thereto, and, with secondary passageways to drain water from the barrel to the outside of the assembly after the valve has been closed by the closure member.

Abstract: The present invention is directed to the combination of a vibrating element and an ultrasonic nozzle having an ultrasonic vibrator. The combination includes a body having a liquid supply passage therethrough and a chamber having a first and second end. The liquid supply passage is in communication with the chamber via its first end. The second end of the chamber defines an opening. An inner peripheral wall forms a portion of the chamber intermediate the first and second end. A multistepped edged portion is formed on the inner peripheral wall and each step defines an edge which severs and atomizes the liquid which cascades thereover from the liquid passage.

Abstract: A drain unclogging and clearing apparatus providing an elongated rigid tube having a constricting nozzle at one end capable of increasing the velocity of water flowing through the tube and ejecting such water in a jet, the nozzle being surrounded by a flared resilient splash guard. The opposite end of the tube is provided with a quick acting manually controlled ball plug valve connected to a supply hose which, in turn, is connectable to either a male or female threaded faucet. An oval ring-shaped handle is adjustably mounted on the tube approximately one-third of the length of the tube from the valve and is provided with studs for carrying male and female hose adapters.

Abstract: A nozzle assembly for use with fluid jet cutting systems is disclosed which yields a lower profile, lower mass nozzle assembly, and which permits "finger-tight" assembly of the nozzle.Briefly, the assembly includes a nozzle housing, a generally tubular closure member (20) having a fluid-accommodating passageway, a collar (36) for positioning a jet-forming orifice (42) with respect to the passageway, and a sealing ring (38) retained to the tubular member by the collar to provide a high pressure seal between the tubular member and the nozzle housing.

Abstract: A boundary layer thrust vector control nozzle (10) has a housing (18), the aft end of which has attached a control vane assembly (12). The control vane assembly includes two brackets (78, 80) which receive two vanes (86,88) such that the vanes are in spaced parallel relationship and extend across the exhaust opening. The vanes have equal but opposite angles of attack and are adapted to generate large side forces in a perpendicular plane and small side forces in a plane parallel to the vanes. The nozzle includes four sets of control ports (44, 46) for deflecting an exhaust plume to produce the large and small side forces also to produce significant roll moments.

Abstract: In an electromagnetically actuatable fuel-injection valve for injection systems for internal-combustion engines, the valve includes a valve housing, an ejection opening, a magnet winding, a closure element which is connected to an armature associated with the magnet winding, and a pin which is located in the ejection opening and has a conical region, the conical region being within or at a plane formed by the outer edge of the ejection opening. In this way, the formation of drops at the edge of the ejection opening is prevented so that a fine atomization is obtained.

Abstract: An improved system and method for providing a controlled release of vapors from a vaporizable material such as a fragrance material provided in a container for air freshening. The system includes a sealable container containing a porous reservoir medium, which contains a liquid fragrance material in communication with a plenum cavity for accumulation of vapors therein without reaching a pressure equilibrium with the liquid source. A permeable barrier is provided between the plenum and the atmosphere for metered release of vapors through an aperture provided in an impermeable barrier to the atmosphere. The reservoir medium contains capillaries and the surface area of the reservoir medium adjacent the plenum is made large compared to that of the apertures in the impermeable barrier. Thus, the conversion of a liquid phase fragrance material in the reservoir absorbent material to vapor phase for dispersal to the surrounding air is controlled so that the service life of the device is substantially extended.

Abstract: A fuel injection nozzle for internal combustion engines is proposed, which includes a valve needle stressed by a closing spring and a damping device to partially damp the opening movement of the valve needle. The damping is effected in accordance with the stroke frequency, the stroke length of the valve needle, or both, or the quantity of fuel throughput per injection cycle, and the damping effect is preferably variable automatically by shifting the time of the onset of damping relative to the onset of injection. As a result, an adaptation of the damping effect to the operating state of the engine at a particular time can be attained which substantially meets the ideal parameters for such damping.

Abstract: An assembly for irrigating at water pressure below 10 psi comprising a sprinkler head for discharging water at a desired discharge pressure below 10 psi onto a site to be irrigated, a pressure chamber for delivering a supply of water at a supply flow rate and at a supply pressure greater than the discharge flow rate and the discharge pressure, a container structure for containing a volume of water in communication with the sprinkler head having a free surface communicating with atmosphere disposed at a level above the sprinkler head a height generally corresponding to the desired discharge pressure, and a float valve mechanism for introducing water from the pressure chamber into the container structure sufficient to maintain the free surface of the volume of water contained therein generally at the aforesaid level.

Abstract: A combined decorative object for household decoration and humidification is disclosed. The device makes use of the aesthetic qualities of flowing water, and comprises an inclined panel having discontinuities formed therein such that water flow thereover is interrupted in a manner which is pleasing to the eye. The panel may comprise a number of panes of glass in edge-overlapping, abutting relation to one another such that water flowing over the panels essentially adheres to the panels, such that splashing is avoided in favor of burbling. In this way, excessively large water droplets are not released to the atmosphere, which tends to damage other household goods in the vicinity of the device.

Abstract: A pneumatic spreader and distributor nozzles for the distribution of solid materials is disclosed. The nozzles include a flow chamber having an inlet opening, an outlet opening, and a discharge structure positioned adjacent to the outlet opening. Both the flow chamber and the discharge structure are shaped and dimensioned so as to discharge the materials in a uniform pattern.

Abstract: There is disclosed herein a liquid spray gun which includes an improved heat dissipation system and an improved leakage flow recirculating system.The improved heat dissipation system results from an improved and stronger air flow through the gun housing and around the electromagnetic coils. The improved air flow is created by a venturi or aspiration effect at the spray tip created by the action of the piston pump in spraying liquid at high velocity reducing the air pressure adjacent the tip. The internal portion of the housing communicates with the low pressure area so air in the housing is drawn from the housing to the low pressure area. Vents are provided in the housing adjacent the electromagnetic coils for outside air to be drawn into said housing over said coils and to the low pressure area, thus improving air flow and heat dissipation.

Abstract: An automatic water-sprinkling controller, with a peculiar main-valve connected with water supply, for controlling a water-sprinkling system which includes sprinklers, hose or pipes connected between said main-valve and said sprinklers, and a pilot tube for operating said main-valve. In the automatic controller, when the shortage of water of the ground is sensed by a moisture sensor comprising a ribbon which expands and contracts as a humidity, a microswitch is turned on by the contraction of the ribbon to feed an instant electric current for a electronic circuit and to start a timer circuit. The electric current is instantly fed to a solenoid, which is mounted in a microvalve unit, to open this unit, through the electronic circuit. When the microvalve is opened, a pilot water in the pilot tube, which is connected between the microvalve and the main-valve, starts to flow, and the main-valve is opened.