Abstract: A fuel injection valve comprises a hollow body in which there is formed a fuel circuit having an outlet opening. A guide member has a stem located in the passage and secured to the body. A bulged end portion of the guide member projects through the opening and is formed with a valve seat surface. An annular valve closure member is slidably mounted on the guide member and sealingly movable in the opening. A coil in the body is adapted to move a valve closure member into an abutment position clear from the seat. When the valve closure member is in that open position, a conical jet of fuel is delivered by the valve.

Abstract: An oscillating wave-type lawn sprinkler is provided of the type having a water-powered drive mechanism for angularly oscillating an elongated spray tube generally about its own axis, wherein the drive mechanism has a crank link coupled to the spray tube by an improved releasable coupling assembly. The releasable coupling assembly comprises a C-shaped clamp at one end of the crank link, sized to fit around the spray tube, an indentation in the spray tube, and at least one tab on the interior surface of the clamp for releasingly engaging the indentation. During normal operation, the tab is engaged in the indentation and the angularly oscillatory motion of the crank link is imparted to the spray tube. When the spray tube is subjected to an external rotational force exceeding a predetermined magnitude, the spray tube rotationally disengages the indentation from the tab to move independently of the crank link, thereby preventing damage to the drive mechanism.

Abstract: The disclosure relates to an improved snow making machine for ski areas and the like, which enables the snow making process to be carried out with greater efficiency than heretofore and with simplifications in the basic equipment requirements. The apparatus utilizes water and compressed air supplies, conventionally provided at the site and extracts a fraction of the energy available in the pressurized water supply by first passing the water through a turbine motor driving an axial fan. The water exiting from the turbine is then mixed with compressed air in a plurality of nozzles and discharged into the air stream created by the turbine-driven axial fan. The equipment makes possible the production of large volumes of high quality snow with greatly reduced requirements for compressed air utilization.

Abstract: A self-regulating spray nozzle is provided which includes a chamber for receiving both product to be sprayed and a driving fluid. A moveable component is provided for selectively varying the cross-sectional area of an opening provided in an output passage from the chamber in response to pressure developed within the interior of the chamber. A mechanical counter-force is exerted on the moveable component to tend to close the output passage opening of the chamber against the force of the pressure developed in the chamber, and which at least partially overcomes the force of the pressure developed within the interior of the chamber to thereby maintain the pressure drop through the output passage opening substantially constant.

Abstract: A reaction drive sprinkler including an improved drive nozzle assembly for rotating the sprinkler in steps about a water supply standpipe. The drive nozzle assembly comprises a fixed drive nozzle through which an inclined stream of irrigation water is projected for passage through a diverter tube mounted in front of the drive nozzle for movement between forward- and reverse-drive positions. The diverter tube is shifted between the forward- and reverse-drive positions by a spring-loaded, over-center reversing mechanism for slightly diverting the water stream for alternated interruption by a pair of laterally oppositely angled deflector spoons on a pivoting reaction drive arm.

Abstract: A snow-making machine is disclosed which includes a first group of air-water snow-making nozzles and a second group of airless, water atomizing nozzles. A distributional air fan is driven by a water turbine. Water for the air-water snow-making nozzles is derived from the outlet side of the turbine, while water for the airless nozzles is derived from the intake side of the turbine. A novel construction of air-water manifold ring and air-water nozzles associated therewith is also described. The construction provides a high efficiency, low cost, lightweight snow-making unit, ideally suited for ski area snow-making operations.

Abstract: In a single-pressure actuated control system for compressed air spraying of water, a rising pressure of an air supply line actuates an air valve to supply the air to the nozzle and to a tank, and a water valve is subsequently actuated by the pressure from the air valve to supply water to the nozzle. As the air supply pressure falls, first the air valve and then the water valve closes, and the air stored in the tank drains water downstream of the water valve to prevent dripping from the nozzle.

Abstract: A folding boom for agricultural sprayers comprising a center frame section mounted in the bed of a truck on a trailer. First and second boom assemblies normally extend outwardly from the center section with each of the first and second boom assemblies comprising inner, intermediate and outer boom sections. The inner boom section is connected to the center frame section so that the inner boom section will pivotally move rearwardly if the inner boom section strikes an obstruction. The inner boom section is also connected to the center frame section in such a manner so that the inner boom section may be freely pivotally moved to a transport position. The intermediate boom section is pivotally connected to the outer end of the inner boom section so that the intermediate boom section may pivot rearwardly relative to the inner boom section if the outer or intermediate boom sections strike an obstruction.

Abstract: An electromagnetically actuatable valve is proposed, which serves in particular as a fuel injection valve for fuel injection systems of internal combustion engines. The valve includes pole pieces supported in a valve housing, which are joined by a yoke on which a magnetic coil is disposed. Remote from the yoke, the first pole piece has a first pole and the second pole piece has a second pole, the pole pieces are arranged to extend toward one another and define therebetween a gap in which a nonmagnetic stop may be disposed. The pole pieces have a continuously extending, concave surface which confront a ball which serves as both the armature and the movable valve element. The ball is urged toward a valve seat by a guide diaphragm supportedly attached to the housing at its circumference.

Abstract: Rotary sprinklers are described comprising a nozzle having an axial bore for forming an axial jet, and a rotor floatingly mounted for axial and rotary movement, the underface of the rotor being formed with a pair of grooves from its center to its outer edge for deflecting the axial jets laterally of the sprinkler and for imparting a rotary motion to the rotor. The rotor further includes a stem depending from its underface and received within the nozzle bore, which stem is formed with a pair of grooves extending axially thereof and merging with the radially-extending grooves in the underface of the rotor. Also described are various arrangements for floatingly mounting the rotor by means of a spindle, a cap, or a bridge.

Abstract: A spreader 10, cooperating with a dump body 11 having a conventional tailgate 20, includes a conveyor 15 extending through an opening 12 in the lower region of tailgate 20 to rest on bottom 13 of body 11 and extend aft of tailgate 20. A hopper 30 underneath a rear end of conveyor 15 receives rearward flowing material that it guides downward to a spinner 50 arranged below hopper 30. Telescoping pipes 51 and 52 adjust the height of spinner 50 below hopper 30 and pivot spinner 50 between a horizontal stowed position and a vertical operating position. Conveyor 15 is pivotally connected to tailgate 20 so that as tailgate 20 pivots open when body 11 dumps, conveyor 15 moves with pivoting tailgate 20, sliding rearwardly of body 11 and lifting a rear region of conveyor 15 clear of bottom 13 of body 11.

Abstract: A fire protection sprinkler head which can reduce or substantially eliminate frame shadow effects that produce non-uniformity in spray pattern. The head is of the known type having a base with a throat through which fire retardant fluid flows and two or more frame arms which extend outwardly from the base and joint in an arch-form to support, in the path of fluid discharged from the throat, a central boss which deflects the fluid outwardly.

Abstract: An electromagnetic fuel injector is provided with a tapered armature valve plate operatively positioned by means of a locator so that it is arranged so as to, in effect, pivot from a spring biased position at which it seats against a valve seat associated with a plurality of orifice discharge passages located concentrically about the axis of the injector to a second position adjacent to the working surface of the pole piece means of the associate solenoid. Preferably, the electromagnetic fuel injector is of the bottom feed type whereby it can be supplied with fuel in excess of the amount to be injected, with the flow path of fuel being arranged so that the excess fuel will purge vapors from the injector and cool the solenoid coil therein.

Abstract: An apparatus for spraying both liquid and dry particulate material such as powder. A rectangular housing holds upright cylinders, one for liquid and the other for dry particulate material and each having a one-way check valve at the top for receiving pressurized air and an air pressure gauge above the housing. Coiled flexible hoses extend from the respective cylinders to spray nozzles outside the housing. This entire assembly is stored in a covered carrying case.

Abstract: A centrifugal sprayer of the type having an electric motor driving a disc element, and coupled to a feed mechanism suspended in immersion in a container of liquid to be sprayed, including an external axially supporting bushing surface about the cone feeder, wherein the lower feed opening of the cone feeder is supported by a mating conical bushing surface, thereby providing laminar flow to the inlet of the cone feeder.

Abstract: A multichamber drip irrigation hose for distributing water and the like. A hose having a larger primary tube and a smaller secondary tube joined at a common wall, with passages in the common wall for flow from the primary tube to the secondary tube, and with passages in the secondary tube for flow from the secondary tube to the exterior. The tubes of the hose are formed from a strip of sheet material having opposite edges with one or both edges folded on itself to form a thicker edge, and with the strip folded and bonded to both thicker edges or one thicker edge and to the strip along a line spaced from the thicker edge, to form the primary and secondary tubes. Various fold configurations are possible.

Abstract: A reaction drive sprinkler includes an improved drive assembly for rotating the sprinkler in steps about a water supply standpipe. The drive assembly comprises a fixed drive nozzle through which an inclined stream of irrigation water is projected for passage through a movable diverter tube mounted in front of the drive nozzle. The diverter tube is shifted by a reversing mechanism for slightly diverting the water stream for alternated interruption by a pair of laterally oppositely angled deflector spoons on a pivoting reaction drive arm. More particularly, the diverter tube directs the water stream for cyclic interruption by one of the deflector spoons to rotate the sprinkler stepwise in one direction through a selected arcuate path and then shifts the diverter tube to direct the water stream for interruption by the other deflector spoon for stepwise sprinkler rotation in the opposite direction.