Abstract: An improvement in a pop-up sprinkler which comprises the provision of an upwardly facing annular valve seat in the lower portion of the housing assembly above the inlet therein and a valve member on the pop-up sprinkler head assembly in a position to engage the annular valve seat when the sprinkler head assembly is in its retracted storage position. The valve member is mounted on the sprinkler head assembly for biased movement independent of the movement of the sprinkler head assembly and the bias thereof provided by its weight and the return coil spring thereof so that the valve member will be separately moved out of engagement with the annular valve seat to permit passage of water under pressure into the housing assembly in response to the communication of the source of water under pressure with the inlet.

Abstract: A water sprinkler includes a turbine drive assembly responsive to water under pressure supplied to the sprinkler for moving a spray head through a prescribed rotational path. The turbine drive assembly drives an incremental motion mechanism coupled to the spray head for rotating the spray head between a plurality of angularly spaced stationary positions, and for maintaining the spray head in each stationary position for a time period sufficient to achieve maximum trajected range of water from the spray head. A reversing assembly can be provided for repeatedly reversing the direction of spray head rotation within a prescribed arcuate path, and the reversing assembly includes means for varying the angular locations of the stationary positions of the spray head upon successive reversals of spray head movement.

Abstract: A rotational indexing nozzle arrangement has been devised wherein positive and consistent indexing action takes place under the influence of the application of fluid pressure and its relief by the action of an indexing or biased spring which becomes relaxed during the first stage (outward) movement of the indexing of the rotational nozzle head and which bites in and holds thereby causing the nozzle head to rotate during the second stage (inward) movement of the discharge head. The extent of the incremental indexing is determined by the length and angle of the biasing spring, or member. For improved operation a bearing of the ball or roller type may be disposed at the inward end of the nozzle arrangement whereby the resistance of the closing spring to rotation of the nozzle head is lessened.

Abstract: A pop-up sprinkler assembly of the type including an internally driven rotary sprinkler head having a multiplicity of annularly spaced flow passages through which the flow of water is controlled by a fixed pattern plate. The assembly is provided with a manually operable pattern plate mounting member for adjusting the fixed cooperating relationship of the pattern plate with the rotary sprinkler head so that the orientation of the ground pattern area within which the water streams fall can be easily determined.

Abstract: A pop-up cleaner for a swimming pool. The gear housing of the cleaner is removably positioned in a fitting in a circular opening in the floor of the pool. A jet block is mounted on a linear movable hollow tube that rotates with a rotor mounted in the gear housing, which rotor is connected through a reduction gear train mounted in the gear housing to an impeller mounted in a turbine casing on the gear housing. The fitting is adapted to be connected by a conduit to a water pump. When water under pressure is present in the conduit, the jet block projects out the fitting and a stream of water under pressure is directed substantially parallel to the surface of the pool in the vicinity of the cleaner. Water flowing through the cleaner rotates an impeller which through the reduction gear rotates the jet block at a substantially constant angular velocity. When the pump is turned off, the jet block returns into the fitting.

Abstract: A forward motion arresting means is added to a fluid powered lance to reduce the harmful effect of the stopping of the lance forward motion. A plug member mounted on the lance mates with a body member within the housing to prevent fluid flow and reduce the lance forward motion. Rearward motion arresting is achieved by the addition of a reservoir portion which acts as a hydraulic stop in conjunction with the lance piston.

Abstract: A cleaning head for installation in the bottom surface of a swimming pool includes a rotary pop-up jet producing element having a hollow cylindrical lower section open at its bottom and an enlarged cylindrical hollow upper section closed at its top. An outlet opening is disposed in a vertical cylindrical wall of the upper section. A camming pin extending from the vertical cylindrical wall of the lower section engages opposed, staggered upper and lower sawtooth-like camming surfaces disposed along an inner cylindrical wall of a stationary section of the cleaning head. The stationary section of the cleaning head sealably engages with a housing installed in the bottom surface of the swimming pool and is sealably coupled to an intermittent high pressure water supply.

Abstract: For use with a pop-up sprinkler of the full or part circle type, a multi-purpose seal is provided between the movable stem of the pop-up sprinkler and a stationary mounting base which is fixed with respect to the sprinkler housing. The seal is preferably a unitary molded article and includes a grit wiper at its upper end, a central bearing to slidingly guide the stem within the housing, a sliding water-activated seal, and an annular static seal for providing a watertight seal between the movable stem and stationary housing during normal operation of the sprinkler.

Abstract: A sprinkler head has a pop-up riser having a nozzle at the upper end thereof for directing a desired flow of fluid therefrom; said riser contains a turbine drive device for rotating said nozzle in response to fluid passing through said sprinkler head; said nozzle having a sealing surface with a part of said sprinkler head; said nozzle being biased against said part so that fluid passing through said nozzle decreases the force biasing said nozzle against said non-rotating part. A modification of the nozzle and turbine drive is disclosed. The modified nozzle is biased against the non-rotating part at a predetermined sealing load which has a minimum effect by the pressure of the fluid flowing through said nozzle. The turbine drive has a gear drive housing filled with fluid and sealed from contact with said fluid passing through said sprinkler head by a capillary tube.

Abstract: Apparatus for intermittent delivery of a fluid under pressure wherein a plunger having a conduit is disposed in a housing for reciprocal, rotary motion and responsive to fluid pressure at the intake end, by means provided in the plunger pops out of the housing and rotates a pre-selected number of degrees. Means are provided to stop both rotary and axial movement simultaneously.

Abstract: A lawn sprinkler system has a plurality of sprinkler heads connected to a common water supply line. The sprinkling or irrigation, the rate of rotation and the contour of the area sprinkled all are controlled at each sprinkler head. A timer valve associated with a manually adjustable control setting regulates the sprinkling cycle at each head in response to rotation of the head, following which water is bypassed to the next sprinkler head in succession. Further, each sprinkler head contains a rotatable nozzle assembly which is adjustable to provide a spray pattern which will conform to different contours or areas to be sprinkled by each head independently of the other heads in the line in such a way as to afford the greatest possible water efficiency.

Abstract: A part-circle sprinkler having a sprinkler head incorporating a nozzle continually oscillates between two positions. The sprinkler head is connected to a transmission driven by an impeller The impeller is driven by a reversible stator which can direct a plurality of channelized streams of water against either side of the blades of the impeller and thereby cause the impeller, sprinkler head and nozzle to rotate in a clockwise or a counterclockwise direction. The reversing stator is controlled by a resilient switching arm operated by adjustable fingers on the exterior of the sprinkler head, which set its limits of rotation. As each limit of rotation is reached, one finger exerts a torque on the switching arm. The torque causes the arm to twist until it exerts sufficient force on the reversing stator to overcome the force of the water on the stator vanes and thus reverse the direction of the stator. The sprinkler head then rotates in the opposite direction, which brings the other finger toward the switching arm.

Abstract: A pop-up swimming pool cleaner comprising a cleaner for a swimming pool having a floor formed with an opening therein, said cleaner comprising a nipple that is positioned within the opening and clamped to the bottom wall. This nipple is internally threaded and screwed thereinto is the top wall of a gear housing. This top wall is formed with a central opening in which is journaled a tube which opens at its upper end into a vertical arm of an L-shaped passage and the lower end of which is splined. The gear housing includes an outer cylindrical wall and a bottom wall. It also includes an inner cylindrical wall extending between the top and bottom walls, and an annular wall spaced from the top wall defines a chamber for a rotor having a central tubular member extending into the inner cylindrical wall of the gear housing.

Abstract: The present invention discloses a reversible turbine-driven sprinkler head which includes a vaned turbine motor for rotatably driving a nozzle. The turbine is unresponsive to the norml flow of fluid through the sprinkler head to the nozzle. Switchable deflection means are included for deflecting the flow of fluid through the body against the turbine to cause rotation thereof in either of two directions. By deflecting the fluid flow to cause the turbine to rotate in one direction, the nozzle is rotated in one direction. By switching the direction of fluid deflection to cause the turbine to flow in the opposite direction, the nozzle is rotated in the opposite direction. Adjustable means are provided for setting the positions relative to the rotation of the nozzle whereat the deflection of the fluid flow is reversed, whereby the nozzle is caused to repeatably oscillate between a first and a second position.

Abstract: A stream rotor sprinkler having a rotatable nozzle assembly for discharging a stream of fluid, and a rotatable plurality of deflectors mounted to the sprinkler surrounding the nozzle assembly. A water-driven motor impeller is activated by fluid flow through the sprinkler and rotates an attached rotor. The nozzle assembly is integrally attached to the rotor and is rotated thereby. The nozzle assembly includes an annular skirt at its lower end; the deflectors also have an integrally attached annular skirt which is in horizontal concentric relationship with the nozzle assembly skirt. A transmission is mounted to the sprinkler so as to be positioned between the deflector skirt and the nozzle assembly skirt. The transmission is driven by the rotation of the nozzle assembly skirt and in turn rotates the deflector skirt.

Abstract: A swimming pool mounted rotatable head for a water jet pool cleaning system adapted to rotate in a non-uniform sequential manner during a pool cleaning operation to maintain deleterious matter in suspension in the water so that it may be removed by the main drain or skimmer inlets of the pool water circulation system.

Abstract: A rotary sprinkler is provided with structure for adjusting the force applied to the impact arm by the impact arm spring. The sprinkler has a laterally directed nozzle cooperating with the arm to rotate the nozzle and an impact arm journaled on a shaft extending above the nozzle. The arm is mounted within a cage extending above the nozzle. The cage includes a pair of arms extending from the nozzle on opposite sides of the shaft and terminating at their upper ends remote from the nozzle in a top plate. A helical spring surrounds the shaft and is secured at its lower end to the arm. A bushing assembly is mounted in the top plate of the cage and receives the top end of the spring. The bushing assembly may be manually adjusted relative to the top plate to vary the force applied by the spring to the impact arm. The sprinkler is mounted in a bucket-like housing positionable within the ground such that the mouth of the housing is flush with the ground surface.

Abstract: Upright cylinder buried underground has riser which is thrust upward to a raised position where the top is above ground. Motor in the top of the riser carries and rotates a sprinkler nozzle. Piston retracts riser, and during retraction, water flow washes the riser as it is drawn into the cylinder. An internal check valve prevents ground water from entering the system.

Abstract: A rotary sprinkler is provided with structure for adjusting the force applied to the impact arm by the impact arm spring. The sprinkler has a laterally directed nozzle cooperating with the arm to rotate the nozzle and an impact arm journaled on a shaft extending above the nozzle. The arm is mounted within a cage extending above the nozzle. The cage includes a pair of arms extending from the nozzle on opposite sides of the shaft and terminating at their upper ends remote from the nozzle in a top plate. A helical spring surrounds the shaft and is secured at its lower end to the arm. A bushing assembly is mounted in the top plate of the cage and receives the top end of the spring. The bushing assembly may be manually adjusted relative to the top plate to vary the force applied by the spring to the impact arm. The sprinkler is mounted in a bucket-like housing positionable within the ground such that the mouth of the housing is flush with the ground surface.

Abstract: High rising projectable sprinklers which rise automatically from the ground when water is supplied under pressure to the sprinklers. The projectable sprinklers include a generally cylindrical housing closed at the bottom and sunken in the ground, a projectable float which floats upward within the housing when water is supplied under pressure to the sprinkler, and a sprinkler head including a rotating nozzle or nozzles attached to the top of the float.

Abstract: A rotary sprinkler is provided with structure for adjusting the force applied to the impact arm by the impact arm spring. The sprinkler has a laterally directed nozzle cooperating with the arm to rotate the nozzle and an impact arm journaled on a shaft extending above the nozzle. The arm is mounted within a cage extending above the nozzle. The cage includes a pair of arms extending from the nozzle on opposite sides of the shaft and terminating at their upper ends remote from the nozzle in a top plate. A helical spring surrounds the shaft and is secured at its lower end to the arm. A bushing assembly is mounted in the top plate of the cage and receives the top end of the spring. The bushing assembly may be manually adjusted relative to the top plate to vary the force applied by the spring to the impact arm. The sprinkler is mounted in a bucket-like housing positionable within the ground such that the mouth of the housing is flush with the ground surface.

Abstract: Arc adjustment structure is provided for a rotary sprinkler having a rotatable nozzle supported from a shaft with the reversing mechanism attached to the nozzle and extending from the nozzle in the direction of the shaft. A notched ring is fixedly attached to the shaft below the nozzle. A first wire locking collar has one end compressively encircling the shaft above the annular gear and the opposite end formed in a loop extending radially from the shaft and terminating in a lateral end section for engagement with the teeth of the gear. A second wire locking collar has one end compressively encircling the shaft below the annular gear with the opposite end formed in a loop extending radially from the shaft and terminating in a lateral end section for engagement with the teeth of the gear. The locking collars are positioned such that the loops intercept the actuating arm of the reversing mechanism as the nozzle of the rotary sprinkler rotates on the shaft.

Abstract: Improvements in sprinkler systems having fluid under pressure flowing therethrough and a sprinkler head with a pop-up nozzle actuated by fluid pressure. An impeller is actuated by the fluid flow to rotate the nozzle and thus rotate the spray of fluid threfrom. A transmission is disposed between the impeller and the nozzle for transmitting rotation of the impeller to the nozzle. Means are provided for regulating the rate of rotation of the impeller, and then the nozzle, under varying volume flow of fluid being sprayed thereout. This may be accomplished by a substantially constant velocity of incoming fluid impinging on impeller blades.

Abstract: A sprinkler for watering an area having a specific shape using water subject to an intermittent and regular variation in pressure introduced against a patterned plate positioned in the base of the sprinkler. The plate is situated adjacent to a slotted opening in the lower solid side of a hollow head moveable under water pressure within a cavity formed between the base and a cap of the sprinkler. A nozzle is attached to the upper end of the head to distribute the water passing the restricting window and segment of pattern disposed in its path in the base. Springs are associated with the head to provide a torque to the sprinkler head as the head rises in the cavity under pressure of the water on the lower side of the head. A gear and ratchet is provided on the head to prevent the head from returning to the first position upon reduction of the water pressure and resultant reaction of the springs to return the head to its position of rest within the cavity.

Abstract: Projectable sprinklers which rise automatically from the ground when water is supplied under pressure to the sprinklers, sprinkler heads, stationary sprinklers employing the sprinkler head of the present invention for use on the surface of the ground, and a lid apparatus for increasing the area wetted by a sprinkler head. The projectable sprinklers include a generally cylindrical housing closed at the bottom and sunken in the ground, a projectable float which floats upward within the housing when water is supplied under pressure to the sprinkler, and a sprinkler head including a rotating nozzle or nozzles attached to the top of the float. In one embodiment, the projectable sprinkler contains means for spreading chemicals over the surface of the ground. The sprinkler heads include means for pumping solutions or liquid mixtures of chemicals through the nozzle or nozzles of the sprinkler head, and may be used in a stationary or projectable sprinkler system.

Abstract: An adjustable nozzle for rotary pop-up sprinklers which allows an operator to accurately position the arc of coverage to any desired location while the pop-up sprinkler is in operation without rotating the entire sprinkler relative to the riser on which it is threaded.

Abstract: A rotary sprinkling system which is configured to minimize the accumulation and detrimental effects of debris, and which comprises a pop-up nozzle head secured to an inner housing slidably received within an outer housing and retained by the compressive force of a spring, such inner housing enclosing an impeller driven transmission subjected to only low pressure drops and having a speed-reducing gear train isolated from water flow, a simplified and easily adjustable direction controlling mechanism substantially inaccessible to intermeddlers, and a manually adjustable by-pass throttle to control the flow velocity of water driving a water-wheel impeller.