Abstract: A bolt guard assembly utilizes a central sleeve and first and second end caps to separate a metal fastening nut and bolt from a pair of wood products that have been treated with a preservative. The bolt guard assembly is formed of a plastic material and prevents the metal fastener from coming into contact with the treated wood products. The central sleeve is sized to telescopingly cooperate with barrel ends of the two end caps. Each of these end caps is structured having a fastener head or nut receiving pocket which receives the head or nut of the fastener and isolates them from the wood. Fastener life is greatly increased through use of the bolt guard assembly.

Abstract: A bolt guard assembly utilizes a central sleeve and first and second end caps to separate a metal fastening nut and bolt from a pair of wood products that have been treated with a preservative. The bolt guard assembly is formed of a plastic material and prevents the metal fastener from coming into contact with the treated wood products. The central sleeve is sized to telescopingly receive crimped barrel ends of the two end caps. Each of these end caps is structured having a fastener head or nut receiving pocket which receives the head or nut of the fastener and isolates them from the wood. Fastener life is greatly increased through use of the bolt guard assembly.

Abstract: An apparatus for controlling the density from a reclamation slurry tank or silo includes apparatus for adding slurry to the tank, an overflow from the tank which communicates with a sump, and reclamation apparatus mounted toward the bottom of the tank. The reclamation apparatus essentially comprises a bell mouthed pipe directed downwardly and exiting horizontally from the tank. The pipe is connected to a pump for removing slurry accumulating at the bottom of the tank. The pipe also includes apparatus for measuring the density and/or flow through the pipe. The density from the tank is controlled by a fluid inlet mounted between the bell mouth and the pump which forces fluid into the pipe in accordance with the measured flow or density as compared to a predetermined flow or density. To facilitate the operation, various fluidizing jets are included around the bell mouth and around the bottom of the tank.

Abstract: A sump for the deposit and removal of particulate material mixed with a fluid, comprises a first and second reservoir formed in the surface of the earth. The first and second reservoirs each have a top at the surface of the earth and extend from the surface to a predetermined depth in the earth to form a bottom. The reservoirs have a common wall portion between them from the surface of the earth to a location intermediate the surface and the predetermined depth where the common wall terminates forming an opening between the first and second reservoirs. Particulate material is deposited in one of the reservoirs so that said material is free to fill the reservoir and move through the opening to the second reservoir. Pumping apparatus is mounted in the remaining reservoir at a depth between the terminus of the common wall and the bottom.

Abstract: A sensor apparatus for determining fluid levels and pressures in a fluid-containing vessel wherein the sensor apparatus comprises a mounting member having a fluid passageway positioned therein; a pressure sensor in operative contact with one end of the mounting member and a pressure fluctuation dampening device operatively positioned on the other end of the mounting member. The dampening device comprises an arrangement of fluid passageways arranged so that the fluid passageway through the mounting member substantially perpendicularly intersects a second fluid passageway intermediate the ends of the second fluid passageway with the second fluid passageway being intersected at each of its ends by third and fourth fluid passageways.

Abstract: An improved process and apparatus for electrolyzing ions in a liquid electrolyte wherein the electrolyte is covered by an immiscible liquid of low conductivity and whereby the entrainment of said immiscible liquid in said electrolyte is prevented.

Abstract: An improved process and apparatus for electrolysis of a high purity metal from an aqueous pregnant liquor acid electrolyte at high efficiency and high current density in the presence of impurities. In one embodiment the electrolysis cell employed in such process is provided with a fluid cover.