Abstract: A spraying system for cryogenic liquid, e.g. a liquefied gas, provides a distribution duct formed with a plurality of slit-shaped spraying orifices. Preferably a phase separator is provided upstream of the orifices and the orifices are close to the liquid compartment of the phase separator.

Abstract: A low noise air nozzle system for fanning and separating stacked sheet to facilitate single sheet pick-up. The system employs nozzles which are provided with a diverging air ejection channel which terminates at the nozzle face in an orifice slit 0.025" wide.

Abstract: An adjustable orifice fluid knife utilizing a fluid such as air and including a supporting structure adapted to be connected to a source of fluid. A passage network is on the supporting structure terminating in an opening for transmittal of fluid from the fluid source and out of the opening. A nozzle assembly is on the supporting structure in alignment with the opening for directing the flow of fluid therefrom in a controlled high velocity stream capable of acting as a knife. The nozzle assembly includes a fixed plate on one side of the opening at a predetermined angle with respect to the opening. A bar assembly is on the opposite side of the opening and includes an adjustable blade on the bar assembly responsive to adjustment structure to be angularly shifted with respect to the opening and the fixed plate to a variety of different positions along its length thereby providing for a range of orifice sizes along the length of the blade in alignment with the opening for passage of fluid therethrough.

Abstract: To remove air from pouches filled with foodstuffs or other products prior to sealing, equipment has been used which opens the top of the pouch, inserts a nozzle, injects steam through the nozzle, draws the edges of the top of the pouch together and then seals the top edges. The present invention is an improvement in the nozzle construction which prevents droplets of water from condensing on the top edges of the pouch, a deficiency of the prior art which inhibits an air-tight seal. The nozzle has an inner tube with a flared terminus which is lowered into the pouch, the tube being surrounded by a jacket connected to a source of saturated steam at about 50-60 psi. An adjustable pressure reducing orifice interconnects the jacket and tube so that the steam pressure emitted from the terminus is reduced to near atmospheric pressure and the temperature is increased to about (270.degree.-290.degree. F.

Abstract: Apparatus for evenly and uniformly depositing particulate suspended in a gas on at least one surface, and in at least one direction, of a substrate. The apparatus has an exit slit (13) and a passage for communication of product including a main conduit (1), a plurality of secondary conduits (2) which are of equal length and internal diameter and a primary slit (6) communicating with a chamber (7). The slits are coextensive in length and the secondary conduits, of equal length, connect along the primary slit at regular spacing so that product is delivered uniformly to said exit slit.

Abstract: An apparatus for producing a continuous curtain of cooling liquid to cool a hot metal workpiece issuing from a rolling mill. A header tank with an elongated slot formed lengthwise along its underside is provided. An elongated nozzle, located in the header has an outlet extending from the slot. Both the inlet and outlet of the nozzle are generally rectangular in form but differ considerably in cross-section. An insert divides the nozzle into several passageways.

Abstract: A nozzle body of a molded spray head forms a path for a highly pressurized carrier fluid. The fluid path includes a rectangular-section, diverging outlet and a spray nozzle spaced upstream therefrom in a suction chamber for directing the carrier fluid in a spray pattern spaced inwardly of and parallel to the walls of the diverging outlet. A chemical product is selectively passed into the suction chamber for entrainment about the carrier fluid. Avoiding impingement of the carrier fluid spray upon the walls of the nozzle outlet helps to maintain the 600-1000 psi pressure of the carrier fluid flow throughout the nozzle body for increased impact pressure upon surfaces to be sprayed.

Abstract: Apparatus for distributing the flow of gas, usually air, in a fluidized bed includes a plurality of vertically upstanding distributor members extending upwardly from a manifold member to which they are threadedly engaged. The members are of closed end, generally tubular shape and have a helical slotted opening extending along their length. The width of the slotted openings is less than the diameter of the majority of particles utilized in the associated fluidized bed.

Abstract: A jet discharge device comprises separate inlets for liquid and solid particles and a tubular mouthpiece of flat cross-sectional shape in which the solid particles and liquid are to be mixed and ejected from a front face of the mouthpiece. Wear of narrow side walls of the mouthpiece is minimized by locating the solid particle inlet completely within the lateral boundaries of the liquid jet formed within the mouthpiece and by arranging the liquid nozzle so that most, if not all, of the liquid jet is spaced from the narrow side walls. Wear of the narrow side walls is also minimized by providing auxiliary liquid jets along the narrow side walls to restrict engagement of solid particles therewith.

Abstract: A nozzle for forming a liquid jet includes a flow passage having a circular inlet and a flat rectangular outlet and a cross section which gradually changes from a circular shape to a flat rectangular shape. The magnitude of the cross-sectional area of the flow passage gradually decreases in the flow direction of the liquid. The flow passage changes direction in a zone at the upstream beginning of the change of cross-sectional shape to assume a new direction which is at an acute angle of deflection to the original direction of the flow passage. The long sides of the rectangular cross section of the flow passage are perpendicular to a first imaginary plane containing both legs of the angle of deflection. The nozzle is formed of a first and a second nozzle part having, respectively, first and second edge faces. The nozzle parts are joined to one another by a face-to-face engagement between the edge faces.

Abstract: An actuator and actuator-orientator assembly orients aerosol cans in the proper position to spray a stripe of marking material. An actuator having a generally cylindrical outer surface is adapted to be mounted on the valve stem of an aerosol can and includes a spraying orifice and a pair of radially outwardly extending locating lugs. The actuator-orientator is provided with a circular central opening into which the actuator is inserted and a pair of recesses which extend radially outwardly from the central opening for receiving the locating lugs of the actuator when the actuator is properly oriented. The periphery of the central opening is defined by curved guide surfaces which extend upwardly from the recesses. A guide surface extends from each side of each recess and meets a guide surface from the other recess at the midpoint of the arc which extends between the recesses.

Abstract: A foamed article having zones of varying hardness is prepared by moving a shaping means relative to at least two foam pouring means to distribute a foamable mixture over the surface of the shaping means in a fan-shaped pattern in response to the relative motion between the pouring means and the shaper, adjusting the fan-shaped pattern to define zones in the foamed article having the desired physical characteristics.

Abstract: A burner, or nozzle, especially for gaseous fuels in which the burner is formed of inner and outer members defining therebetween an annular gap from which the gas to be burned is discharged while preceding the annular gap is an annular turbulence chamber preferably having a greater cross sectional area than that of the gap. The fuel to be burned is introduced in substantially the radial direction into the turbulence chamber and then is discharged through the gap and burns. The walls defining the turbulence chamber and gap advantageously converge toward the axis of the burner in a direction outwardly from the burner and, likewise, converge with each other.

Abstract: A scarfing nozzle for producing a fin-free scarfing cut at least as wide as the width of the nozzle. The nozzle comprises an oxygen gas passage terminating in a nozzle discharge orifice characterized by having a central section and at least one end section. The central section is defined by parallel upper and lower edges and is adapted to discharge a sheet-like stream of cutting oxygen of uniform intensity across the metal body to be scarfed. The end section is defined by having at least one of its edges inclined such that the height of the end section is gradually reduced to a lesser value towards the side edge of the orifice but remaining greater than zero at the edge so as to diminish the intensity of the oxygen stream towards the edge of the orifice to the point where the flow of oxygen discharged at the edge is insufficient to scarf the workpiece but sufficient to produce a fin-free scarfing cut at least as wide as the width of said nozzle.

Abstract: A plate for fluid bed reactors to insure uniform distribution of the fluidizing gas, comprises a pair of spaced opposed plates having holes therethrough, the holes in one plate being staggered relative to those of the other plate. The peripheral holes are larger than the central holes. The holes in the upper plate have upper frusto-conical parts and lower cylindrical parts, while the holes in the lower plate have upper cylindrical parts and lower frusto-conical parts. The plates have central holes closed by frusto-conical plugs operable from outside the associated apparatus to discharge material from the plate.

Abstract: A conveyor belt fluid nozzle system includes apparatus for directing pressurized fluid such as air across the width of the conveyor belt to remove debris from the belt surface or from objects on the belt. The source of pressurized fluid such as an air compressor is attached to a plenum member. At least one elongated nozzle extends along the length of the plenum member substantially across the width of the conveyor belt. Auxiliary nozzles may be positioned on each side of the belt. The orifice of the nozzle member has a pair of resiliently biased blades that are adjustable to control the flow of the pressurized fluid.

Abstract: This application discloses "wiping" of a liquid, molten zinc, for example, across the surface of a strip to which it adheres. A wiping fluid, such as steam, is directed from an orifice at the strip. A valve, preferably an elongated relieved bar is positioned adjacent and behind the orifice, and flow of wiping fluid is controlled by rotation of an elongated valve in the form of a relieved bar or cam.