Abstract: Pointed novel stakes which may be of metal or plastic, adapted to be driven in alignment into the ground or bed upon which a concrete slab is to be poured, are provided with lever arms engaging a lifting wire or rod upon which reinforcing material, such as welded wire mesh is supported. The upper ends of the lever arms are adapted to be moved through an arc of about 45 degrees to a vertical position, and serve to raise the reinforcing material to a predetermined position above the bed of the slab when the lifting wires or rods are moved in a lateral direction.

Abstract: A diverter valve adapted for use in septic systems for controlling the flow of effluent from a septic tank to a plurality of leach beds, comprising a thick-walled injection molded valve body of PVC or ABS plastic, closed at the bottom and having a centrally disposed valve chamber provided with an inlet, and a plurality of outlet ports, rigid integrally formed ribs extending from the top to the bottom walls of the valve body dividing the same into separate inlet and outlet chambers communicating with the central valve chamber, a circular opening in the top of the valve body adapted to receive an injection molded tapered valve plug, a retainer cap for securing the valve plug and stem in operative position, the lower sides tapered and in contact with the valve body and the lower surface of the depending ring of the cap provided with a serrated surface to form a tight seal with the valve plug.

Abstract: A solar heating system including a unit for converting the sun's rays into heat, comprising an insulated tank lined with a heat reflecting metal and containing a fluid heat transfer medium, a cover of insulating material enclosing the top of the tank, having a series of apertures therein, which may be of conical shape, heat absorbing metal positioned below the apertures and immersed in the fluid heat transfer medium, a framework located above the apertured tank cover supporting a lens system comprising a plurality of lenses located directly over the apertures and focused on the heat absorbing metal immersed in the heat transfer medium, means for maintaining the lens system in focus with the heat absorbing metal during daylight hours, and means for circulating the fluid heat transfer medium through the solar heating unit and through a heat exchanger.

Abstract: A septic tank system having an improved outlet which may be readily installed in existing septic tanks without modification of the tank or outlet fittings, to prevent the discharge of particles of sewage suspended in the effluent from passing directly into the drain field, the outlet including a "T", a dual conic deflector composed of two cones joined at their bases and flexibly supported directly below the open lower end of the "T" to deflect therefrom effluent containing solid particles rising from the bottom of the tank during the fermentation process. The flexible mounting permits sidewise displacement of the conic deflector so that the upright portion of the "T" can be reamed to remove any accumulation of deposits therefrom, the conic deflector being weighted so as to return to its original position after the reaming operation has been completed.

Abstract: A game racquet comprising a composite metal and plastic frame having a stringing section and a handle, the composite frame formed from an extruded metal channel member surrounding and substantially enclosing an extruded plastic core member, the extruded metal and plastic core member being bonded together to form a unitary metal-plastic composite frame, and a bumper strip covering the outer surface of the composite frame, the bumper strip having a central groove to receive and protect the stringing.

Abstract: An apparatus for uniformly distributing seed oysters over a previously prepared seed bed, comprising a shallow draft vessel having a V-shaped hold, a channel in the lower portion of the hold running substantially the length of the vessel, the sides defining the channel extending through and a short distance beyond the bow of the vessel, an endless belt conveyor mounted in the channel, a centrifugal spinner disk located below the discharge end of the endless conveyor, power means to operate the endless conveyor belt and the centrifugal spinner disk, a series of short plates which rest on the lower portion of the V-shaped hold, which are readily removable to expose progressively portions of the endless conveyor belt as the load of seed oysters is distributed, propulsion means mounted at the stern of the vessel so that the same may be readily maneuvered, the upper surface of the conveyor belt and the centrifugal spinner disk being coated with a soft resilient material to prevent injury to the seed oysters.

Abstract: A diverter valve, particularly adapted for use in septic systems, for controlling the flow of effluent from a septic tank to a plurality of leach beds, comprising a thick-walled valve body of cast urethane having a deep circular groove in the upper surface to receive a section of a capped pipe to afford access to the valve control from ground level, and having a centrally and vertically disposed valve chamber provided with an inlet port and a plurality of outlet ports, rigid integrally cast webs extending from the top to the bottom walls of the valve body dividing the same into separate inlet and outlet chambers communicating with the central valve chamber, oppositely disposed circular openings in the top and and bottom walls of the valve body, the walls of the openings providing bearing surfaces for a tapered valve plug of cast urethane having top and bottom circular sections and having a cut-away central section providing a passageway for alternatingly connecting the inlet port with one of the outlet ports.

Abstract: A portable elastic type exercising device which may be carried on the person for strengthening and developing the muscles of the arms and limbs, and more especially the muscles of the shoulder, forearm, and wrist customarily used in playing tennis, comprising a single elongated flexible and elastic cord having a loop at one end through which an arm may be extended and a handle of elongated shape having a bore through which the flexible and elastic cord passes to vary the length of the cord between the loop and the handle and to secure the handle in a selected position.

Abstract: A system for protecting the personnel and the electrical equipment of power boats having non-metallic hulls, and for the cathodic protection of the hulls of the metal fittings of such boats when docked and supplied from a shore-based alternating current supply, in which circuit breakers are inserted in the hot leg and the neutral leg of the shore-based alternating current supply, and including a polarity alarm and a polarity light socket in which is inserted a polarity light tester as described in U.S. Pat. No. 3,383,588, and in which the negative lead of the battery ground, the equipment ground, and the neutral leg of the shore-based alternating current supply are connected electrically with both the ground plate and the bonding ground of the boat.