Abstract: An arcuate debarking tool for ring rotor debarking machines used in timber processing. The tool comprises an elongated, arcuate body having an outer end that removably mounts a cutting element, and an inner arbored end adapted to be coupled through a mandrel shaft or the like to a ring rotor. A curved, thread-like leading edge first contacts logs that are transmitted axially through the revolving apparatus, and deflects the tools radially outwardly until the log is surrounded by the revolving ring of debarking tools. A companion, spaced apart exit edge is angularly defined in the frame. It functions in a thread-like manner to slowly unengage the rotating tools from the longitudinally traveling, debarked log. The curved exiting edge threadably revolves about the log circumference and slowly transfers the only remaining contact point between the withdrawing log and the revolving tool to an inward position whereby the tool is slowly, rather than suddenly, allowed to radially retract.

Abstract: An implement for handling flexible or collapsible multi ply polyethylene tubing comprising a rigid frame adapted to be secured to a tow vehicle, a powered spool rotatably secured to the frame to receive poly-pipe and an interchangeable retrieval subframe and plow. The frame has a front cross piece, a rigid side rail and a swinging side rail. The spool is mounted between the distal ends of the side rails. A mount on the front cross piece receives the retrieval subframe or plow. The subframe flattens and shapes the poly-pipe for spooling. The subframe comprises a base with arms extending from it. Tension bars extend from one arm to the other. Also, a pair of crossed diagonal cleaning members extend between the arms. The poly-pipe is drawn over the bars and between the cleaning members to flatten and clean the poly-pipe for convenient winding about the spool. The swinging frame rail is swung out to remove or place poly-pipe on the spool.

Abstract: An automated machine and process for the production of pultruded hockey sticks and similar linear products. The machine comprises a rigid elongated frame and a creel bank supplying rovings from individual spools. An elongated, rigid, hollow mandrel extends substantially along the entire length of the machine supported by the frame. A veil guide directs and wraps a veil around the mandrel at the front of the machine. The machine comprises serial segments, each having a pattern card, a gathering bracket and a spiral winding station. Each segment directs rovings onto the mandrel in a longitudinal layer circumscribed by a radial layer comprising separate spaced apart, continuous rovings forming concentric helixes. The winding stations are synchronized and counter-rotate. A third pattern card converges a third longitudinal layer of rovings toward the mandrel. A resin injection die penetrated by the manifold gathers the rovings from the third card and saturates the uncompleted product with resin.

Abstract: A hand truck for fire fighting stores and transports SCBA air bottles. The highly stable hand truck is designed for efficient manipulation by one or two firefighters. It readily traverses obstructed areas, inclined stair cases and the like. The frame comprises a pair of rigid, spaced apart side rails extending between a lower, load-supporting toe-plate and an upper handle. Vertically spaced apart cross bars reinforce the frame. Dolly wheels are mounted adjacent stair climbers, thus enabling passage of the hand truck up and down stairways, over curbs and fire hoses and other obstacles. A container stores accessories. A retractable support system stabilizes the hand truck and enables it to assume an inclined, horizontal orientation for loading and unloading. Frame rail runways with outer rubber liners frictionally contact the air bottles. Bottles are confined within a transportation zone of generally triangular dimensions.

Abstract: A chemical process for treating pit waste contaminated with chromated copper arsenate (i.e. CCA). CCA is recovered for recycling, and remaining solids are decontaminated for safe disposal. Pit wastes are pulverized and reacted with concentrate sulfuric or phosphoric acid. Wood particles are partially decomposed and approximately 60% to 70% of the CCA is leached out. The acid-treated mixture is centrifuged or filtered to separate liquids from solids. Liquids are recycled for reuse in the CCA process. CCA-bearing solids enter a heated digester equipped with an air or water cooled condenser. Concentrated nitric and sulfuric acids are inputted into the digester and the ratio of nitric acid to sulfuric acid to solids is approximately six to two to one by volume. Nitric acid completely oxidizes all organic matter in the solids. Sulfuric acid serves as a dehydrating agent and liquid media for CCA. The initial oxidation is carried out at a temperature greater than 70.degree. C. and less than 100.degree. C.

Abstract: A variable width hanging file frame system is equipped with adjustable corners permitting installation in either letter-sized or legal sized drawers. The system comprises two side rails, two cross member rods and two hoops joined by adjustable corners. The hoops support the frame and terminate in horizontal tangs having barbs. The corners comprise separate pieces that are slidably coupled together; one piece is connected to the side rail, and the other piece receives the rod and hoop. Each corner comprises a generally rectangular body and a slider. The body comprises a slot and minor bosses that are horizontal and parallel to one another. They receive the end portion of the rods and hoops. Barbs in the hoop tangs index with keyways defined in the minor bosses to prevent torsional movement of the hoops. The slot has a generally trapezoidal cross section and receives the slider. The slider comprises an arm having a generally trapezoidal cross section.

Abstract: An automatic, self locking clutch system effectuates blade pitch control on concrete finishing trowels. The clutch instantly releases upon the touch of the operator. A trowel has a downwardly projecting, motor-driven rotor comprising a plurality of radially spaced apart finishing blades directly contacting the concrete surface. A handle extends from a rigid frame and terminates in handlebars grasped by an operator. Control arms extend from the blades into contact with a plate to vary pitch by conventionally rotating the blades about their longitudinal axis. A clutch operatively interconnects a lever and a linkage extending to the swash plate. The clutch comprises a tubular housing coaxially receiving a drive shaft that rotatably controls an internal rotor. A set of spring biased, cylindrical rollers are confined within channels defined in the rotor between major and minor lobes thereof.

Abstract: A leakproof modular manhole system comprising a plurality of separate cooperating, plastic form units that snap fit together in a vertical stack. The deployed system provides a complete replacement for an existing manhole, or forms an entirely new corrosion resistant and leakproof manhole. Each of the seamless units is preferably rotationally molded from polyethylene plastic. Each double walled unit interiorly defines a material receptive annular cavity. The cavity may be filled with structural or non structural fill material. A generally tubular base unit is disposed at the bottom of the excavation for connection with the sewer line by an eccentric reducer coupling. A concrete invert is formed in the base in fluid flow communication with the sewer line. One or more tubular riser units extend serially upwardly from the base. The risers are available in varying lengths to accommodate different manhole depths. The system corbel is formed by a cone that structurally terminates alongside the pavement.