Abstract: A centrifugal fan is treated acoustically by the provision of tuned noise absorption cavities preferably including absorbent infill between an acoustically permeable scroll and casing of the fan. Alternatively, or in addition an acoustically absorbent panel structure is provided in spaced confronting relationship with the inlet port of the fan. The panel structure has an acoustically permeable facing spaced from a rigid backing and the space may be divided into noise absorption cavities and specifically Helmholtz type absorption cavities, the absorption bands of which are broadened by including acoustic infill. It is most advantageous to provide a multiplicity of Helmholtz absorption cavities tuned to respective different center frequencies of their acoustic absorption bands.

Abstract: A ladder truck, e.g. for use in stores for transporting goods from central storage to display shelves and for facilitating the loading of such goods on display shelves, comprises a wheeled truck having attached to one end a stepladder. The stepladder is pivotally secured to one end, and has a first position in which it is wholly supported by the truck, clear of the ground, so that the truck can be wheeled around without interference from the stepladder and a second position in which the lowermost extremities of the stepladder engage the ground or floor surface, and take a portion of the weight of the truck, so that the adjacent wheels of the truck are raised clear of the supporting ground surface. Then, with the truck resting on a single wheel or pair of wheels and on the base of the stepladder, the truck is effectively locked against accidental rolling movement across the surface, and the stepladder can be safely mounted. The stepladder is easily moved from one position to another by simple manual operation.

Abstract: An orchard lift apparatus including a bicycle-type seat upon which an orchard worker may sit, said seat mounted on an elongated pole passing upward through a sleeve and friction hemisphere, said hemisphere resting within a socketed bridge through which said sleeve passes downward, a cable, attached to said sleeve-hemisphere unit, extends downward, approximately parallel to said pole, and is wound or unwound by the worker, on a drum at the base of said pole, by means of foot pedals. Whereby, the worker may move upward or downward, and may change the attitude of the seat in any direction, two straight poles or tubes constitute the legs, angling inward in an upward direction, the above mentioned socketed bridge rigidly fastened to, and spanning across the tops of said pole legs.

Abstract: A stair lift has a load bearing part with a guide rail for extending up one side of a stairway, a lead screw in the guide rail and a corresponding threaded part carried near and co-operating with the lead screw and a motor and/or turning means for rotating the lead screw wherefor no pit needs excavation an electric motor preferably locating at the head of the stairs and a chain and/or platform may span the stairs to another guide rail extending thereup.

Abstract: A disc brake is provided with a warning device or sensor made of a springy material. The sensor is mounted within an space between a friction disc and pad assembly and a yoke, and has a tongue portion formed with a section adapted to rub on a rotating disc at an area disposed outside of the contact surface. When a friction pad is worn out to a predetermined thickness, the section rubs on the disc, emitting an audible warning sound to alert the driver that something is wrong and he should take appropriate action.

Abstract: A braking gear having two turnable levers coupled by a spring and carrying brake shoes which engage the disk of the machine to be braked at both sides thereof and a double-acting hydraulic cylinder mechanically connected with the turnable levers by way of an articulation double-link members. The double-link member has a common articulation joint which is connected with the piston rod of the hydraulic cylinder. The ends of the articulation double-link member are connected with the levers and are acted upon by the spring, coupling the turnable levers, due to which the levers are reliably fixed both when the braking gear is switched on or off.

Abstract: A drum brake assembly provides a pair of brake shoes which are movable by a hydraulic actuator to a braking position. The hydraulic actuator is carried by a backing plate and the pair of brake shoes is movable relative to the backing plate. A piston is slidably mounted within a bore on the hydraulic actuator and pressurized fluid communicated to the bore acts against the piston to move the piston and pair of brake shoes. A partition is also disposed within the bore to substantially define a secondary chamber which receives pressurized fluid from the bore. The partition is movably disposed within the bore and resiliently engaged with the piston so that increased pressure within the bore is transmitted to the piston via the partition and the resilient engagement. Moreover, the partition controls venting of the secondary chamber so that upon contact of the pair of brake shoes with a drum, backlash or retraction of the pair of brake shoes is limited.

Abstract: The engine has a duct connecting the gases in the exhaust gas crossover passage to the intake manifold and providing with a flow control valve for controlling the flow in the duct in such that said valve is moved to open by signals from both of a clutch-actuation detection device and a throttle valve-opening detection device and is kept opening by signal from a timer to be actuated by said two devices.

Abstract: An unoriented supply of similar articles, each having a shank and a head of greater dimension than the shank are introduced into orienting means which include a trough having an inclined slot at its bottom and a plurality of cleats positioned at fixed locations on its side walls. Upon vibration, the articles become separated resulting in certain of the articles becoming oriented within the slot, with the unoriented articles being returned to the supply. The oriented articles are then directed to storing means which include a track including a straight lower portion, level maintaining means and a discharge end wherein the articles are discharged at a predetermined rate to article receiving, positioning and carrying means.

Abstract: Linear objects are removed from a processing drum, one at a time and are deposited to form groups or bundles of said objects in the slots of a transfer drum. Then the groups or bundles of said objects are pushed out of the slots in the transfer drum for feeding same to another apparatus.

Abstract: A device for clearing residues of pulverulent or particulate product from a belt conveyor includes a vibrating roller freely rotatably mounted between an upper carrier run and a lower return run of said conveyor belt and biased into engagement with the inner side of the return run, the vibrating roller being sealed against ingress of dust and other foreign matter and enclosing a vibration generator motor. In such a device the vibration generator motor is protected from the effects of dust and climatic variations and is of compact form. The vibrating roller is resiliently supported by coil springs which thrust the roller against the inside face of the return run of the conveyor belt to ensure that contact is maintained between the vibrating roller and the return run of the conveyor belt even when the conveyor belt is circulating at a high linear speed.

Abstract: A series of conveyor idler roll shafts in end-to-end relation supported by bearings provides a pressurized chamber for the flow of grease or oil to the bearings from a reservoir, which is capable of pumping the lubricant into the axial bore of each shaft. Small, radially directed holes connect the shaft bores to the bearings by providing a restricted passage having across it a suitable pressure drop capable of allowing lubricant to flow in sufficient quantities to each bearing regardless of its distance from the reservoir pressure source. Adjacent shaft ends are connected with a resilient cylindrical tubular coupler to provide the requisite flow passage continuity. A labyrinth seal provides a continuous path for lubricant to flow through the bearings, the seal and ultimately to the exterior of the system, where its appearance is visible and indicative of adequate lubricant flow to each bearing along the shaft assembly.

Abstract: A drive mechanism for use with a shaker conveyor to effect longitudinal reciprocating movement of a conveyor trough is disclosed, the drive mechanism including a flywheel mounted for driving rotation about its center axis and connected to a slide block longitudinally movable along a lever arm mounted for pivotal movement in a plane perpendicular to the axis of rotation of the flywheel. The slide block is connected to the flywheel eccentric to its axis of rotation and the lever arm is connected to the conveyor trough so that constant speed rotation of the flywheel effects reciprocating movement of the conveyor trough in a manner to advance particulate material along the trough.

Abstract: A conveying device having a flexible member with inside and outside surfaces and first and second end positions forming inlet and outlet orifices. Support mechanisms disposed intermediate the inside and outside surfaces and a drive mechanism for engaging the flexible member and propelling it in a continuous closed loop such that the inside surface becomes the outside surface and the outside surface becomes the inside surface; that the relative shape and orientation of the first and second end portion is not altered; and, that the inside surface and the outside surface move in substantially opposite directions.

Abstract: A two-piece moisture proof safety container for pills and the like has a rectangular drawer and a cover made of a resilient material. The cover and drawer are in the form of mated boxes in which the drawer is slidably engaged within the cover by meshing flanges on the facing surfaces of inside surfaces of sides of the cover and corresponding outside surfaces of the sides of the drawer. This configuration facilitates the automated filling and assembly of the container. The meshing flanges on the drawer and the cover act as cams and cam followers to resiliently urge the drawer, as it is closed, up into tight contact with the underside of the top of the cover by the proper interference fit, effecting a moisture-proof seal. A small catch is attached to the outside of the rear wall of the drawer. This catch engages a portion of the rear wall of the cover, locking the container closed.

Abstract: The rims of two plastic cups are heat sealed to each other by means of an interposed, plastic-coated aluminum foil which seals the cavities of the two cups and their contents from each other and constitutes the sole fastening element connecting the cups. At least one integral, plastic piercing thorn projects from the flexible bottom wall in the cavity of one cup, and manual pressure applied to the exposed outer face of the bottom wall may cause the blade to pierce the aluminum foil so that the contents of the two cavities may be mixed and thereafter discharged through a normally plugged spout on one bottom wall.

Abstract: Replacement motor kit includes compartmentalized container having at least a motor stator (or, preferably, an assembled stator and rotor) arranged in one compartment thereof; and preselected components arranged in at least one other compartment. Motor shafts have weakened external sections, such as grooves or notches. Such sections are proportioned to permit breaking of shaft by gripping it on both sides of a notch or groove with pliers, and then stressing and breaking the shaft at the notch or groove. Plural grooves or notches may be provided.

Abstract: A packaging assembly in which hardware items such as hand tools are secured in place on a supporting base or board by means of skin packing techniques, the final package to be inserted into a container such as a metal tool box. The invention is characterized in that the skin packing is carried out so that the bonding of the overlying film is effected in opposed marginal areas, these areas then being folded underneath the supporting board on which the tools are secured so that, in the final assembly, which is to be inserted in a tool box, there is no "waste" space, the entire floor area being occupied by tool elements.

Abstract: A thinner, less-expensive-to produce, and more easily handled, opaque sheet is formed by coextrusion of two polymeric layers containing relatively low loadings of black pigment around a third layer of polymer which is pigmented at levels higher than would be practical using conventional extrusion processes, rather than a coextrusion procedure. The sheet is an improved product for use in packaging photographic film or like products to be protected from light.

Abstract: A recording disk cartridge comprises a housing in which at least one recording disk may be mounted for rotation about its axis. The housing has a peripheral side wall about which a ridge is formed, the ridge being defined by a plurality of sections at least some of which are spaced from one another in a direction parallel to the axis of rotation of a disk mounted in the housing. The dimensions and spacings of the ridge sections are such that the contour of the peripheral side wall at the lower surface of the ridge is the substantial complement of the contour of the peripheral side wall at the upper surface of the ridge. The cartridge also comprises a cover including a peripheral side wall having a contour at its upper surface substantially the same as that of the peripheral side wall of the housing at the lower and upper surfaces of the ridge.

Abstract: A multi-functional suppository encapsulator for molding, packing and administering suppositories comprising an inlet-guide groove having a plurality of identical, equally spaced holes perforated along bottom portion thereof; a plurality of container-bodies extending transversely from the convex outer surface of said groove, and having open ends thereof coaxially built-in with the peripheries of said holes individually so as to define therein bullet-shaped housings having smooth inner surface; a plurality of paired bridging strips in longitudinal alignment, with the longitudinal edges thereof parallel to said groove, each pair respectively formed on opposite sides of the close end of each said container-body and joining with adjacent pairs at ends of strips to form strip-junctures; and a plurality of recesses embed in-between and transversely to said pairs of bridging strips individually curving upward to a suitable distance along opposite sides of said close ends.

Abstract: An end opening, reclosable tubular dispensing carton.

Abstract: This invention is directed to a mechanism for locking and restraining one or more objects of various lengths and diameters or widths in a holding rack of the type in which an end of the object is seated in a depression in a fixed base, the base being secured immovably. The disclosed invention includes a shaft which has a radius which varies with respect to a longitudinal axis for pivoting and further has notches along its length at the point of its largest radius. A cap member, receptive to an end of the object not seated in the base, is slidably mounted upon the shaft and is able to engage the notches of the shaft whenever the shaft is provided into a given position. There is also provided a slotted plate which is located between the shaft and the cap member such that as the cap member slides on the shaft, it moves within the constraints of the slot on the plate, and is prevented from rotating about the shaft.

Abstract: In forming containers by distending preforms of nitrile thermoplastic material at molding temperature, the improvement comprising exposing such preforms to low dosage radiation to reduce residual nitrile monomer in the thermoplastic material and then distending the irradiated preforms to cause HCN generated during irradiation to flash off in forming the container. The containers formed have unusually low concentrations of residual nitrile monomer as well as extractable HCN making them especially suitable for packaging foods, beverages, pharmaceuticals and the like. The irradiated preforms from which such containers are made have similarly low residual nitrile monomer levels.

Abstract: An original closure member for the pouring spout of a container includes a screw cap and a separate safety ring. The safety ring includes a break-off section connected at one end to the remainder of the safety ring but being separate from the ring at its opposite end. A stop cam projects inwardly from the break-off section into the path of lugs extending downwardly from the lower end of the screw cap. The stop cam yields when the cap is screwed onto the pouring spout, however, when the cap is unscrewed, the stop cam is unyielding and, as a result, the break-off section separates from the rest of the safety ring.

Abstract: A preferably metallic platform which is adapted to be stacked and is provided with supports for receiving and supporting another loading platform. The platform also includes side walls which are adapted detachably to engage the insides of the supports. The side walls in the corner regions of their upper edges are positively connected to the supports which in the vertical direction are detachable from the loading platform.

Abstract: A pallet frame of the collar converter kind, that is a frame structure having interconnected side walls of low height and elongated form adapted to fit around the periphery of a load supporting surface, has the side walls thereof formed as openwork structures from elongated metal members.

Abstract: A mechanism kit is provided to enable fast and economical conversion of existing semi-honor newspaper vending machines to machines for dispensing one newspaper or magazine at a time following the insertion of proper coins into the conventional coin control mechanism. The customer thus has access to only a single newspaper and not the full contents of the vending machine after insertion of the coins. A manually operated reciprocating single newspaper gripping, transporting and release device withdraws each paper through a narrow slot in the front, side or top of the dispensing machine cabinet and this device is connected with a reciprocating element of the coin mechanism which is released for movement only after the insertion of proper coins by a customer. An associated cabinet door lock and release linkage releases the door for access by the customer to the last newspaper held on the cabinet door after the customary stack of newspapers is exhausted.

Abstract: A tablet retaining and dispensing device of generally cylindrical configuration having a disposable tablet containing cartridge removably attached to one of its ends and an ejector rod mounted within the dispenser that is selectively movable so as to eject not more than a single tablet with each selective movement of the rod. A sanitary cap is removably attached to the tablet ejecting end of the cartridge and includes an integrally formed clip member which serves to retain the dispenser in the pocket of an article of clothing.

Abstract: A spool valve includes a disposable, replaceable cylinder containing gaseous media under pressure which is selectively introduced into the pitot and static lines of an aircraft for purging same incident to the endwise movement of a normally retracted plunger which comprises the valving member of the valve. The plunger, when in an inoperative position, maintains certain instruments in open communication with the pitot tube and outside static lines of an aircraft. When the plunger is advanced to an operative position, the aforesaid connections between the instruments, pitot tube, and outside static lines are closed, whereupon the gaseous media under pressure is introduced into the lines leading to the pitot tube and outside static air line for thereby purging said lines, and simultaneously therewith the instruments are automatically connected to an auxiliary pitot tube and auxiliary outside static lines.

Abstract: A device for supplying a toner to a developing unit provided in an electrophotographic copying machine in which a toner supplying member at the bottom of the hopper may be rotated only in one direction, which may be manually operated or driven in association with a prime mover during copying operation. There is provided a rockable member attached to a protruding portion of the supplying member by a one-way clutch, which is rockable about an axis coaxial with the supplying member, the one-way clutch being adapted to be engaged with the rockable member only in the rotational direction of the supplying member.

Abstract: A carton particularly constructed for receiving a container having a spout wherein the top closure flaps of the carton have openings means for permitting the projection of the spout for the purpose of filling the container or dispensing the contents thereof. The opening means includes deflectable flaps in inner flaps aligned with a through opening in the outer flaps with the deflectable flaps serving to protect a dust cover carried by the closure against direct engagement by the container spout. The deflectable flaps are bendable through the through opening in the outer flaps and serve to define a lock to hold the spout in its extended or projected position. The deflectable flaps have intermediate fold lines facilitating the folding thereof to release the spout.

Abstract: An economical and easy to operate mechanically operated dispensing device has a rotatable actuator connected with at least one expansible chamber to effect operation of the expansible chamber to draw material to be dispensed from a container into the expansible chamber and to then pressurize the material. An expansible bulb is connected with the expansible chamber and with a dispensing nozzle, and has a volumetric capacity several times as great as the expansible chamber. Valves are associated with the bulb to control flow into and out of the bulb, whereby the rotatable actuator and expansible chamber are operative to repeatedly draw material from the container, pressurize it and transfer it under pressure into the bulb, the bulb expanding as material is added thereto, and the elasticity of the bulb being such as to exert a substantial pressure on the material in the bulb.

Abstract: A safety mechanism system for double vacuum bottle construction to prevent liquid contained within the inner bottle element from escaping when the system is upset or overturned and including a cover portion disposed directly above and in contact with the body portion of the bottle, a bellows to serve as a pump provided inside the cover with the lower portion of the bellows in communication with the inside part of the cover and in further communication by an air valve and air vent with the inner portion of an inside bottle of the double bottle vacuum system, with a cylinder in vertical arrangement with the bellows and inner bottle member and located within a plug member for the mouth of the inner bottle, and adjacent to the cylinder a chamber connected by apertures to the inside of the inner bottle, as well as a receiving portion adjacent to the cylinder and in vertical relation therewith and containing therein blades projected therefrom and having a closing element adapted to cooperate with said receiving por

Abstract: Highly accurate metering of particulate material is achieved by employing a rotatably mounted agitator to initially move the material radially outward to the periphery of a horizontally-disposed, stationary, circular, flat support plate, from which it falls, under the guidance of a cylindrical wall depending from the plate's periphery, to an annular-shaped support area of a horizontally-disposed, stationary, circular, flat metering plate. A rotatably mounted metering rotor, driven concurrently with the agitator, sweeps the particulate material radially inward from the support area to a centrally located discharge orifice in the metering plate. With such an arrangement, the particulate material will be maintained in an uncompacted state and the mixture will remain homogeneous, with the result that the volume of the material flowing through the discharge orifice will be directly proportional to the number of revolutions of the metering rotor. A precise volume may thus be fed to a collection station.

Abstract: A non-aerosol pressure dispenser includes a pressurization chamber having a piston reciprocable therein and a manual actuator extends from outside the chamber into operative association with the piston. The actuator is reciprocable in a first direction to move the piston to compress a spring engaged therewith and to draw material into the chamber. The spring urges the piston in a second direction to pressurize the material in the chamber and a discharge valve or nozzle is connected with the chamber to release the pressurized contents thereof over a desired prolonged period of time and at a sufficient pressure to obtain a fine mist of the material.

Abstract: A pump type dispenser for dispensing a spray of liquid has a container for containing the liquid to be dispensed, a piston-cylinder device for drawing liquid out of the container and pressurizing it, a dispensing head into which the pressurized liquid is pumped, with a free piston chamber therein in which is a free piston spring loaded toward the direction from which the pressurized liquid comes, and a nozzle opening out of the free piston chamber through the dispensing head. A check valve between the piston-cylinder device and the free piston chamber blocks return of the fluid once it has been forced into the free piston chamber, so that the free piston acts on the liquid in the free piston chamber to dispense it in a spray through the nozzle while the piston-cylinder device recovers from its actuated to its unactuated position and the next actuation thereof is started.

Abstract: A liquid measuring and dispensing device has a central flow tube sealingly surrounded by a measuring chamber slidable relative to the flow tube so as to bring respective ports in the flow tube and the chamber into register for filling and emptying the chamber through the two ends of the flow tube which form inflow and outflow ducts respectfully, and a shuttle valve within the flow tube and between the ducts and movable with the chamber to isolate the portion of the flow tube between its ports and thereby prevent direct flow along the flow tube between the ducts, the outside diameter of the flow tube surrounding the inlet duct being reduced in diameter so as to provide an air vent for the chamber during emptying.

Abstract: A measuring and dispensing closure member for a container of granulated material has a variable capacity dispensing mechanism, oppositely pivotable barrier members for alternately opening an inlet to the dispensing mechanism after closing its outlet and closing the inlet before opening the outlet, barrier operating mechanism including an operating member having a generally rectilinear path of operating motion inwardly and outwardly of the closure member and contained in an area of the closure member having a cross-section suitable for grasping in one hand, the operating member being accessible for operation by the thumb or a finger of such hand, and adjustment mechanism for varying the capacity of the dispensing mechanism from the exterior of the closure member.

Abstract: A back pack which may be in the form of a four-limbed animal where the limbs provide straps to couple the pack to the wearer and also provide storage space.

Abstract: A detachable paper bag carrier comprising a handgrip connected to two paper clamps. Each clamp comprises a front plate, a top member and two side plates, which leave a channel into which a side of a paper bag may be inserted and which bound a volume of space in which a travelling plate is located. The travelling plate is caused to move by the insertion of the paper bag and retains the paper bag until it is manually released.

Abstract: A portable truss fabricating apparatus in the nature of a trailer enables convenient and expeditious manufacturing of wooden trusses on the job site. The use of dual articulated and counterbalanced booms on an elevated support structure of the apparatus with a conventional hydraulic C-clamp suspended by a cable from one boom places any joint on the truss in easy reach of the operator without shifting the truss lumber, and giving the operator complete freedom of movement without the burden of carrying the hydraulic C-clamp. The truss supporting bed of the apparatus includes both longitudinal and transverse extension members which are retracted during transport. Means to safely stow the dual boom structure and to stabilize the long support bed during transport are also provided.

Abstract: A chipper head is removably affixed to the holder head of a welding rod holder in an area spaced from and opposite the point of support of a welding rod whereby the welding rod holder functions as a combination welding rod holder and chipper hammer.

Abstract: A combination paper tape punch and reader having a bi-directional stepping tape transport controlled by a continuously oscillating magnetically activated pawl. A further improvement is a punch interposer geometry allowing for easy removal of the punch and die. A single motor and timing signal is used for both punch and reader tape transports.

Abstract: An energy control system for selectively controlling permissible temperature ranges in a plurality of remote zones from a central control location where the zones each have a heat transfer unit for controlling temperature in the zone. The system is intended for use where the zones are interconnected by pairs of conductors, preferably telephone circuits, with the control location. The system includes a switching arrangement for selectively controlling voltages on the conductors, as by reversing the polarity of normal DC voltage across a conductor pair. Voltage responsive circuits at each zone are interconnected with such conductors. Heat transfer control switching circuits in each zone are associated with the voltages responsive circuits for altering normal operation of the heat transfer unit in the zone in response to a detected change in voltage on the conductor by the voltage responsive circuit.

Abstract: Fluid flow regulating systems involving systems for controlling the motor speed of fluid pumping devices are disclosed. The speed control systems involve use of a velocity head force sensor that movably responds to the velocity head forces of an air stream delivered by the pumping device, and these movements in the positions assumed by the force sensor are detected and used to control the power delivered to the motor. Temperature change detectors are used in most embodiments to modify the force sensor movements so as to introduce temperature change factors as well as velocity head force change factors into the control of the power circuitry. Force sensor of the pivotal vane, bendable vane and airfoil types are shown, and temperature sensors of the bimetallic and expandable fluid types are also used.

Abstract: A replaceable track apparatus comprises two channels separated one from the other and formed in a concrete bed. The channels are lined with a corrosion resistant material and have located therein, a track containing vessel which comprises a corrosion resistant shell having a railroad track positioned therein at a predetermined location and supported by means of a reinforcing rod configuration secured to the track and held within the vessel by a concrete binder. The track vessel assemblies are located as indicated, in each channel. The apparatus assures the proper alignment of the track members to enable operation of a railway system on the tracks, while providing rapid removal and replacement of the track assemblies when desired, as the assemblies wear due to corrosion.

Abstract: An irrigation system including liquid passage means made of a plastic pipe having very small slit openings for discharging liquid therefrom, further including means for selectively supplying compressed air into the liquid passage means for occasionally blowing off the very small slit openings when they have been clogged.

Abstract: A disposable cartridge containing flowable material is positioned removably in the barrel of a spray gun, the cartridge having a spout telescoped into the nozzle of the gun. When pressurized air is admitted into the gun, part of the air flows into the barrel to force the material out of the cartridge and the spout and into the nozzle. The remainder of the pressurized air passes into the nozzle to atomize the material and to cause the material to spray out of the nozzle as a fine mist.

Abstract: A fluid dispenser has a discharge path outletting at a discharge orifice provided in a nozzle cap in engagement with a nipple surrounding a dispenser needle valve, the cap being adjustable axially of the needle valve so as to move an open ended swirl chamber, which surrounds the discharge orifice, relative to the needle valve into and out of engagement therewith. The fluid is emitted from the discharge orifice in a concentrated and linear pattern upon disengagement between the swirl chamber and the needle valve. Otherwise, upon movement of the cap until the needle valve plugs the open end of the swirl chamber, a shaped spray pattern is created through the discharge orifice. The orifice is defined by a circular wall and by a pair of opposed projections thereon, the projections extending inwardly of the orifice and having spaced apart ends so as to effect a substantially flat spray pattern through the orifice when movement of the cap toward the needle valve causes the valve to plug the swirl chamber end.