Abstract: A fastener for securely attaching a board perpendicularly to an edge of a composite board that includes a first portion and a second portion. The first portion includes a dowel that fixedly engages in a blindbore in the edge of the composite board, a washer that removably abuts against the dowel and the edge of the composite board and limits travel of the dowel in the blindbore, glue that is disposed on the dowel and in the blindbore and fixedly engages the dowel in the blindbore, and an installation screw that extends through the washer and threadably into the dowel, and when tightened, holds the first portion together as a unit, while the unit is being installed in the blindbore, and once the unit is installed, the installation screw and the washer are removed, with the glue maintaining the first portion in the blindbore.

Abstract: A valve assembly used to minimize chemical loss during the transfer of chemicals from one container to another is disclosed herein. The valve assembly minimizes chlorine or other process material loss to the environment by sealing the manifold and the cylinder to be filled from the environment while the valve assembly is connected or disconnected. The valve assembly includes an inlet valve connectable to an outlet valve, the inlet valve comprising a first plug positioned in a bore extending between an inlet and outlet port and a transfer tube engaging a bore of a first insert positionable within the bore of the inlet valve. The outlet valve comprises a second plug positioned in a bore extending between an inlet and outlet port and second insert positionable within the bore of the outlet valve. The transfer tube has a first and second end configured to be insertable at least partially within respective bores of the first and second inserts, the first and second ends each having at least one port.

Abstract: A valve assembly used to minimize chemical loss during the transfer of chemicals from one container to another is disclosed herein. The valve assembly minimizes chlorine or other process material loss to the environment by sealing the manifold and the cylinder to be filled from the environment while the valve assembly is connected or disconnected. The valve assembly includes an inlet valve connectable to an outlet valve, the inlet valve comprising a first plug positioned in a bore extending between an inlet and outlet port and a transfer tube engaging a bore of a first insert positionable within the bore of the inlet valve. The outlet valve comprises a second plug positioned in a bore extending between an inlet and outlet port and a second insert positionable within the bore of the outlet valve. The transfer tube has a first and second end configured to be insertable at least partially within respective bores of the first and second inserts, the first and second ends each having at least one port.

Abstract: A chemical controller device for delaying the distribution of chlorinating chemicals into a swimming pool is disclosed. The chemical controller includes a floating dispenser with an inlet port and an outlet port. The floating dispenser contains the swimming pool chlorinating chemicals. A plug of a suitable chemical which dissolves in the pool water sealably blocks the outlet port and prevent contact between the chlorinating chemicals and the pool water. The chemical plug dissolves in the pool water over a period of time and then starts the chlorination process. The length of the chemical plug determines the number of days before the plug dissolves and thus when chlorination of the pool will commence.

Abstract: A swimming pool is treated by a mixture of sodium carbonate and cyanuric acid or sodium carbonate alone added in the form of a compacted tablet. The tablet is placed in a leaf skimmer or in a bypass cartridge connected to a swimming pool recirculation pump parallel to a pool filter. The tablet is formed by depositing a mixture of sodium carbonate and water in a vessel and by applying pressure to the mixture.

Abstract: A sprinkler, connected to a water supply conduit, oscillates by the force of a piston moving in a cylinder and powered by water bleed in a bypass line from the water supply to the cylinder. The piston is connected to a rack which is engaged with a pinion that is attached to a sprinkler nozzle so that water is sprayed from the nozzle in an oscillating spray responsive to the reciprocation of the piston in the cylinder. A first compression spring is operative to return the piston to a home position after a power stroke. The piston has a discharge passageway covered by a valve piece on the pressure side of the piston. The valve piece is supported by a stem slidably disposed in a bore in the piston. A head is fitted to the opposite end of the stem and a tripper compression spring is aligned with the head so that as the piston expands the head compresses the tripper spring until the force of the tripper spring overcomes the water pressure holding the valve piece closed.

Abstract: A system to chlorinate swimming pool water including one or more buckets containing sodium hypochlorite solution. The valve having a stationary part with a downwardly open cavity and a rotatable part rotatably mounted in the cavity. The stationary part having multiple ports and the rotatable part having a mating through passage. The ports being interposed in a line from the bucket to a swimming pool water recirculating pump so that flow of the sodium hypochlorite solution from the bucket to the pump only occurs when the through passage registers with the diametrically opposed ports. A battery-powered clock motor and reduction gearing connected to the clock motor and to the rotatable part and the reduction gearing rotating the rotatable part 180.degree.

Abstract: Adjustment of chlorine and pH levels in swimming pool water by, (a) treating the water with material selected from the group consisting of cyanuric acid, ammelide and their salts, (b) adding material adjusting the chlorine and acid levels of the water if it has a pH above about 7.5 and adding sodium hypochlorite if the water has a pH about 7.5 or lower, (c) a set number of days later, such as a week, with automatic equipment, without taking a reading of water conditions, adding sodium hypochlorite to the water in a predetermined amount, and (d) continuing the process indefinitely by alternating steps (b) and (c) at intervals of the set number of days. The automatic equipment including a vessel containing sodium hypochlorite solution, a pool water recirculation line including a recirculation pump, and a feeder line from the vessel to the recirculation line.

Abstract: A chlorine injector for a swimming pool including a cylinder of chlorine, a disperser tube near the bottom of the pool, and a transfer tube therebetween. The disperser tube is formed of a fluorinated elastomer and has a multiplicity of discharge orifices formed by needle punctures normally closed but opening up responsive to pressure. A pressure regulator between the cylinder and the transfer tube having ports in contact with chlorine gas made of fluorinated material. Addition of chlorine to the pool being controlled by time of injection with constant pressure set by the pressure regulator and by fixed sizes of discharge orifices formed by the punctures under that constant pressure. Disk spacers supporting the disperser tube above the pool bottom.