Abstract: In a solar water system including a solar collector, a small independent heat exchanger having three of the four ports located at the top with two ports being coaxial is provided for use with existing hot water heaters. The exchanger includes automatic drainback during freezing conditions.

Abstract: The disclosure teaches a method of retarding the loss of carbon dioxide from a circulating water system by means of quaternary ammonium compounds having at least one hydrocarbon radical containing twelve or more carbon atoms or at least two hydrocarbon radicals each containing seven or more carbon atoms. In the method an effective amount of a suitable quaternary ammonium compound is added to the water in the system, surprisingly slowing the rate of loss of carbon dioxide from the water. Carbon dioxide is added to the water as needed to maintain the desired pH. The method provides an advantageous alternative to using stronger and more hazardous acids in maintaining a lowered pH in circulating water systems, for example, in heat exchange systems that utilize cooling towers.

Abstract: A portable cooler has an inner container and an insulated jacket with means for closing the opening to the container. The container is constructed of a heat-conducting material, the outer jacket is provided with one or more pockets, the interior of which communicate with a portion of the heat-conducting wall of the container so that items to be warmed or cooled by the contents of the container may be stored in the pocket. The latter is accessible without opening the container.

Abstract: A hand-grippable carrier for individual use in carrying large planar articles which contains a central grip and two curved support members depending therefrom. A combined spacer and grip is provided proximate to the main grip for initially positioning the carrier for transport.

Abstract: A latching, releasing and locking stanchion apparatus for cows and the like includes reciprocating operating bars and latching/release mechanism operated by the bars wherein the latching/release mechanism is supported completely independently of the operating bars and independently of the stanchion members. Relatively thin section materials are bent into the shapes desired and welded together to form an upper support structure having rigidity and strength while retaining light weight. Fixed, release and bracing stanchions are provided and are, appropriately, welded to a lower support at their bottom and the upper support at their top. The support structure is channel shaped and holds within itself the latching and release mechanism while the operating bars are carried externally to the channel. Self-catch, single release, delayed release, group release, lock-in, lock-out and non-catch features are provided. Manual release mechanism permits the removal of a stanchion member in an emergency situation.

Abstract: To promote the collection and harvesting of propolis from a bee colony a fine mesh screen through which bees are unable to pass is located in a central ventilation passage of the colony by registering it with the scraper screen of an internal pollen trap. The bees deposit propolis on the screen which can be removed without dismantling the hive.

Abstract: A wood, or the like, kerf chuck of two substantially identical pieces are disposed parallel to each other for clamping a board between them. A vertical kerf member extends from one piece through a saw kerf and lies alongside a similar vertical member which extends from the other piece. A bolt and thumb screw attach the vertical members in order to maintain the established separation between base and clamp jaws.

Abstract: A hand-held personal health care device for the polishing of teeth wherein the appliance containing the cleaning agent is driven in an oscillatory manner.

Abstract: A method of solution mining wherein a lixiviant containing both leaching and oxidizing agents is injected into the subsurface orebody. The composition of the lixiviant is changed by reducing the level of oxidizing agent to zero so that soluble species continue to be removed from the subsurface environment. This reduces the uranium level of the ground water acquifier after termination of the lixiviant injection.

Abstract: A load cell of integral unitary construction wherein strain gages are mounted on the peripheral surface of a solid disc-shaped measuring body and are responsive to shear strain induced in the solid measuring body by an applied load. The load receiving and load cell supporting ends are incorporated into the integral unitary structure.

Abstract: A mathematics teaching device wherein a display surface is divided into eight regions. The first region contains one hundred colored and numbered plaques removably mounted in ten rows. Plaques are within five color groupings and the rows are color-coded as are receiving pockets. Two regions have another set of plaques with an adjacent receiving pocket to permit simple mathematical operations to be performed therein. The other regions are marked for additional operations to be performed therein.

Abstract: Weighing apparatus utilizing a load cell wherein overload protection is provided that is external to the load cell. The weighing platform is attached to the load receiving surface of the load cell by a number of outwardly extending arms. Two sets of stops are provided adjacent the load cell and one set is provided at the periphery of the weighing platform.

Abstract: The connection between the actuating handle of a gasoline service station pump and the pump shaft is a lost motion connection wherein the pump may be actuated in the usual manner for turning the gasoline pump on but in returning the actuation handle to the vertical position, the connection between the handle and the pump shaft is floppy, i.e. a lost motion connection, so that the dial setting of the pump cannot be altered but the attendant can reset the indicating dials to zero and release the actuation lever for further operation by holding the actuating lever stationary, inserting a tool into the pump operating shaft and rotating the shaft and sleeve counter-clockwise a specified amount.

Abstract: The vehicle has a support component which has two wheels and a frame work supporting a seat above and forward of the two wheels, a second steering component which has a wheel and means for steering the wheel and means disposed just above ground level for connecting the components so that a provisionally ambulatory medical patient who is either weak from disease or injury or who is partially crippled can mount the self-supporting vehicle and ride it from point to point without changing from a standing position.