Abstract: A reversible airless nozzle for a spray gun comprises an adapter mounted on a forward end of the gun, a filter in the adapter and an airless spray tip captured between the adapter and a safety cap. Should a small outlet orifice from the spray tip become plugged, it may be cleared by inserting the spray tip into the forward end of the adapter in the direction reverse to that for normal spraying, and then briefly triggering the spray gun to eject the blockage. The spray tip is carried in a housing adapted for a snug fit into the forward end of the adapter during cleaning, and an insert in the housing prevents the spray tip from being forced from the housing when reverse hydraulic pressures are applied.

Abstract: A nozzle header for cooling plates according to the invention comprises a lower cylindrical header to a lower header chamber therein and having cooling water supply means for supplying a cooling water into the lower header chamber, an upper header in the form of a roof mounted on the lower cylindrical header therealong to form an upper header chamber therein substantially triangular in section communicating with the lower header chamber through apertures formed in an upper wall of the lower cylindrical header, and nozzles extending through the lower header chamber and having upper ends communicating with the upper header chamber and lower ends in the form of nozzle outlets for jetting the cooling water against a surface to be cooled.

Abstract: A liquid distribution device comprising a tubular horizontal reservoir for holding liquid to be distributed, a plurality of passageways through the upper wall of the reservoir and communicating with an elongated space substantially enclosed by an elongated arcuate cap member extending lengthwise along the outside of the tubular reservoir, the cap member having an outlet edge which is adjustable with respect to the outside surface of the reservoir to produce an elongated narrow slit outlet through which the liquid can flow in the form of a thin sheet. This device finds its principal use in delivering wash liquid to a wet sheet of paper pulp.

Abstract: A method of fumigating grain in the hold of a ship with receptacles that are placed on the bottom of the hold before loading of the grain, and supplied with gas-producing solid fumigant through feed tubes after the grain has been loaded into the hold. The receptacles comprise inner and outer coaxial conical screens supported over a bottom tray for collecting powder residue, the outer conical screen having an inlet fitting in its upper end for connection to a feed tube, and being reinforced by a framework for sustaining the weight of the grain.

Abstract: A drip and trickle irrigator independent of the pressure of the water supply. The drip irrigator has an inlet with a variable-orifice to control the fluid flow into a chamber. A float within the chamber coupled to the variable orifice in order to vary the cross-sectional area of the orifice upon variation of the head of fluid within the chamber. An outlet inside the chamber such that the pressure of the fluid head determines the pressure at the outlet independent of the supply pressure.

Abstract: A coolant nozzle of adjustably variable width stream for a grinding wheel or the like, the nozzle including a hollow housing extending laterally across the working face of the grinding wheel having a coolant inlet in an upper region and a coolant outlet extending laterally in a lower region, a tubular formation extending laterally across the interior of the housing having a coolant receiving opening on its upper side adjacent to one end of the tubular formation and a coolant discharging port configuration on its lower side extending the length of the tubular formation. A control element or closure extends across the tubular formation and is shiftable longitudinally along the tubular formation to communicate the upper receiving port with a selected length of lower discharging port.

Abstract: A liquid atomizer is described which creates liquid pulses and gas pulses which are directed and timed to impact each other. The forces created during impact atomize the liquid into droplets. Large and repeated atomizing forces can be thusly applied yielding fine atomization of even very high viscosity liquids. Applications of crossed pulse liquid atomizers to liquid fuel combustion systems are described.

Abstract: A device (10) for atomizing a liquid is disclosed. The device (10) includes a sprayhead (14) receiving blown air through conduit (26) from boom (12). The air flows over wing 44 to create a region of reduced pressure within rectangular opening (64). A single stream of liquid is projected into opening (64) from where it flows over the secondary wing to trailing edge (54) for breakup and atomization within the vortex and turbulent flow following wing (44). Sprayhead (14) has a pair of elliptical nozzles (30, 32) superimposed on and orthogonally oriented with respect to one another to provide a proper projection pattern.

Abstract: An apparatus for the vaporization of a heavy hydrocarbon feedstock with steam having first and second tubes arranged coaxially to form an annular space, an inlet for introducing a heavy hydrocarbon feedstock within the first tube and a second inlet for introducing superheated steam into the annular space. The first and second tubes terminate in open ends for the supplying of the superheated steam as annulus around a core of the heavy hydrocarbon feedstock. A frustoconically shaped element having an apex angle of less than 20 degrees is connected to the open end of the second tube.

Abstract: Apparatus is disclosed for resistively damping capacitively stored energy in electrostatic spray guns, wherein a fluid spray valve incorporates an electrode for carrying high electrostatic voltage, the electrode terminating in the spray valve and the spray valve having a conductor contacting the electrode and extending externally thereof. A resistive element at least partially encloses the spray valve and electrically contacts the conductor, permitting electrical conductivity while also permitting axial sliding movement of the spray valve inside of the resistive element.

Abstract: A pop-up sprinkler is provided with a control valve for sealing a sprinkler housing against water inflow to prevent leakage or drainage therethrough unless the pressure in a water supply line reaches or exceeds a predetermined level sufficient to move a spring-biased pop-up stem rapidly to an elevated spraying position. The control valve comprises a relatively small valve plug at the bottom of the pop-up stem and encircled by a seal ring for sealing engagement with a valve seat when water pressure is low to close a water inlet at the bottom of the sprinkler housing. In a preferred form wherein the housing is formed by a molding or casting process, the valve seat is defined by the inner diameter surface of an annular flange upstanding from a bottom wall of the housing and having a substantially uniform thickness for solidification with little or no valve seat heat deformation or distortion.

Abstract: A pilot-actuated valve for controlling outflow of pressurized fire-supprent fluid from a thick-walled container. The valve includes a stepped piston that is disposed in an internally stepped housing. To effect a discharge cycle an annular pressurizable chamber is vented to reduce the pressure on one face of the piston, thereby enabling unbalanced pressure forces to rapidly move the piston toward a flow-control diaphragm; an annular cutter on the leading end of the piston ruptures the diaphragm to permit outflow of pressurized fire suppressant. The valve is characterized by leak-free operation during standby periods, and rapid fluid discharge during the actuation cycle.

Abstract: A filtering nozzle for injection molding purposes comprises two parts (1,9), one of which having a bore (6) and the other one a tubular portion (10) fitting within said bore. The tubular portion has internal, annular and axially spaced grooves and has in its outer, envelope surface a number of substantially axial grooves (18) each having such a depth that it penetrates the wall of the tubular portion at the zones of the tops of the internal grooves thus generating a multitude of openings (19) in said tubular portion. By means of channels (7,8,20,21) the plastic melt is directed through the nozzle such that it passes through said openings (19) of the tubular portion. The nozzle parts are screwed into each other, making assembly and dismantling easy.

Abstract: A guidance system for a lateral move irrigation machine of the type having an elongate boom mounted on a plurality of motor driven towers which drive the boom along the field in a straight line path. A plurality of check points in the field are established by a series of magnetic and metallic elements placed in rows along the path of travel of the towers. The towers carry gradiometers or proximity switches which are sensitive to the elements and which deactivate the drive motors of the towers when the check points are reached. When all of the towers have reached the check points, the boom is properly aligned, and override circuits then activate the drive motors to resume movement of the machine.