Abstract: A laser is adapted for attachment to an arrow such that a beam projected from the laser is colinear with an axis of a shaft of the arrow. A first target has a first marking and a second marking thereon. The first and second markings are positioned such that when the laser is attached to the arrow, and the arrow is drawn on a bow, and the beam from the laser is projected on the second marking, and a person drawing the bow visually aligns the first marking with a sighting pin and a peep sight on a string of the bow, and the bow is a first pre-determined distance away from the first target, the sighting pin is properly aligned for aiming the arrow without the laser thereon from the bow toward a second target which is positioned a second pre-determined distance away from the bow.

Abstract: An improvement in a device for absorbing the recoil of a rifle fired while extending above a horizontal surface with the barrel of the rifle supported by a rest member. The improvement is a weighted bag member resting freely on and unattached to the horizontal surface. The weighted bag member includes a first strap which extends along the stock and around the butt of the rifle, and a second strap which is attached to the first strap and extends over the stock of the rifle.

Abstract: A jig for holding an arcuate wood piece is mounted on the table of a molder-planar. The jig has a base which is attached to the table. Mounted for rotation on the base is a clamp holder. A clamp is attached to the clamp holder for holding the arcuate wood piece for rotation with the clamp holder and for engagement with the cutting tool of the molder-planar so as to cut the arcuate wood piece.

Abstract: Method and apparatus to defrost evaporator coils of a refrigeration system by periodically replacing the refrigerant in the evaporator coils by hot refrigerant gas from the compression side of a compressor. The gas from the compressor is sent through an oil separator, then through a solenoid valve to a vaporizer tank. From the vaporizer tank, a portion of the hot gas is fed constantly during the defrosting cycle through a metering flow control valve to the evaporator coils. As the pressure builds up in the vaporizer tank due to the compressor supplying more gas than the amount flowing through the metering flow control valve, a pressure control senses the pressure increase and opens a vaporizer solenoid valve to allow additional hot gas to flow to the evaporator coils. In the evaporator the gas heats the evaporator coils and melts the frost on the coils and then passes to the suction line of the compressor.

Abstract: A device suitable for ice fishing has a base supported above a hole in the ice. A horizontal shaft is rotatably attached to the base and has a wind driven fan at one end and a crank at the other end. A guide member is pivoted to the end of the crank and guides a fishing line wound on a reel with a bait hook in the water. When the fan rotates the shaft and crank, the guide member moves about its pivot point on the crank. This motion causes the hook to rise and fall and move horizontally in the water to attract a fish. The fishing device also has a spring strip having one end attached to the base and the outer end includes a curved portion and a flag. A stop plate is slidably mounted on the spring strip. The spring strip in the set position has the curved portion positioned in a notch on a plate attached to the base. A reel, upon which the fishing line is wound is rotatably attached to the base adjacent the notch and has a trip pin which rotates with the reel.

Abstract: A snow gun for making snow by atomizing water and projecting the atomized water by compressed air into an atmosphere having an ambient temperature below about 32 degrees F. has a one piece body member with a first water opening through one side and ending within the body member. A pair of second water openings extend through the opposite side of the body member and are in communication with the first water opening. Water outlet ports extend from the pair of second water openings and at an angle and through the front of the body member. An air opening extends through one side of the body member and terminates within the body member. Air outlet ports extend from the air opening through the front of the body member adjacent and between the water outlet ports. A pattern plate is attached to the front of the body member and has a slot in communication with the air and water outlet ports. Clean out plugs close the pair of second water openings at the side of the body member.

Abstract: A board game includes separate player pieces, a timing device, a board, a random chance control device, general subject category cards and alphabet answer cards. The board has first and second spaces which define a travel path for the player pieces. The first spaces include indicia referring to a general subject category, and the second spaces include a question and indicia referring to a number, a color and a letter of the alphabet. The random chance control device includes a number, a color and a letter of the alphabet. The general subject cards correspond to the indicia on the first spaces and have a question relating to the general subject category and the answer to the question thereon. The alphabet answer cards correspond to the indicia of the second spaces and have answers to the questions appearing on the second spaces. The alphabet answer cards are arranged in alphabetical order with each card's answers further arranged by the numbers appearing on the second spaces.

Abstract: An anti-theft device for locking an outboard motor comprising an elongated, channel-like, body member has a longitudinally extending opening to closely receive the head portions of clamping screws which clamp the motor to a transom board of a boat, or a motor stand for use in motor sales and/or service. The body member includes a slot to receive the shanks of the screws while allowing the screws to pass through the body member while the head portions are confined within the body member. Stops within the longitudinal opening in the body member are shaped to fit within recesses or notches in the head portions of the clamping screws. Locking means including a padlock secure the head portions of the clamping screws tightly within the body member and in contact with the stops to prevent rotation of the clamping screws.

Abstract: A highway traffic barrier of the New Jersey style is made from semi-rigid plastic material so that it has some elasticity and will act as a shock absorber, while weighing considerably less than the present day New Jersey style barrier made from concrete. The barrier is hollow and contains interior baffles to provide compartments within the barrier. When in use the barrier is filled with a liquid through filling openings at the top of the barrier and has a weight about equal to the present New Jersey style barriers made of concrete. When the barriers are not filled with a liquid, they weigh considerably less than present New Jersey style barriers made of concrete. When not in use, the liquid is discharged through discharge openings near the bottom of the barriers. Each barrier has a groove at each end which is adapted to receive a key so that the barriers may be joined together to form a highway barrier of the required length.

Abstract: A device for holding a sun visor of an open top automobile in an upwardly extending position to allow the sun visor to act as an air deflector comprises a one piece clip member having integrally connected first, second and third leg members which form a triangle. The sun visor extends within the triangle and the free end of the first leg member is removably secured to the top of the automobile windshield.

Abstract: A method of and tool for removing the nut which is in threaded engagement with exterior threads on the inlet end of a faucet to secure the faucet to a sink uses a tool which has at one end a hollow cylindrical portion terminating in cutting teeth and at the other end a reduced portion. The reduced portion is placed within the chuck of a power drill. The hollow cylindrical portion is passed over the threads on the inlet end of the faucet with the cutting teeth in contact with the nut. The tool is rotated by the power drill and the cutting teeth cuts the nut and separates it from the faucet.

Abstract: An animal trap holder for a trap of the Conibear type having a pair of spring biased jaws. The holder is a U-shaped member with the two legs of the U connected together by an integral base. The outer surfaces of the legs and base are flat rectangular surfaces with the sides of the rectangular surfaces of a distance substantially greater than the thickness of the legs and base. The free ends of the legs of the U-shaped member have outwardly extending flange portions to cooperate with the outer surfaces of the legs to receive and support a substantial length of the jaws of the trap when the trap is set and to allow the jaws of the trap to be released when the trap is sprung. When it is desired to adjustably secure the holder to a stake, a U-shaped adaptor of about the same configuration as the holder is fastened to the holder and adjustably secured to the stake.

Abstract: A method of evacuating an air conditioner utilizes the vacuum from the air/fuel manifold of a gasoline internal combustion engine. A do-it-yourself kit for so evacuating an air conditioner includes a hose so constructed as to allow one end to fit the Schrader valve on the discharge side of the air conditioner and the other end to fit a variety of sizes of tube members which extend from the air/fuel intake manifold, for example, the tube member which is connected to the positive crankcase ventilation (PCV) valve. The hose includes a one way valve which prevents flow into the compressor of the unit but permits flow out of the compressor.

Abstract: A method of wrapping a cylindrical shape uses an elongated sheet material with a first fastener portion extending along one edge and one face of the material and a second fastener portion extending along the opposite edge and opposite face of the material. The material is helically wrapped about the cylindrical shape with the edges overlapped and the first fastener portion continuously contacting and releasably attached to the second adhesive portion to secure the sheet material to the cylindrical shape.

Abstract: A process monitoring probe within a sample container is cleaned by flushing a sample process stream from the container and then discharging a jet of water from a nozzle at the probe within the container. A chemical cleaning agent is injected into the water to be discharged from the nozzle.

Abstract: A container for hazardous material has an outer shell, an inner cylindrical tank for hazardous material, resilient filler material between the shell and the tank, flexible, impervious diaphragms fixed within the tank and extending transversely to the longitudinal axis of the tank to provide chambers adjacent each end of the tank, and an arrangement to pressurize and de-pressurize the chambers. The flexible, impervious diaphragms act as an energy absorbent in case the container is subjected to a sudden load and in addition the diaphragms allow for thermal expansion or contraction of the hazardous material in the tank.

Abstract: Apparatus and method for acoustically inspecting hot flat plates while on-line by utilizing an array or arrays of transducers continually spaced a set distance from the bottom of the plates by serrated rollers spring mounted with the array of transducers in a container with overflowing liquid wetting the passing plate to acoustically couple the transducers to the plate and a spray of sufficient force to temporarily cool the hot plate and dispel steam and vapor formed, the spray being in a direction opposite the direction of travel of the hot plate; and support of the unit on a track mounted carriage, with the liquid reused through a reservoir connected system. It is critical that the spray be at an angle of 27.degree. or less to the horizontal and that the spray have sufficient force to have an apparent liquid velocity of at least 44 feet per second, adding the speed of the water and the hot plate together.

Abstract: Light operative apparatus is located inside electro-optical instrument viewing window, such as that used by a radiation pyrometer or dimensional gage in a steel mill environment, to detect and compensate for optically attenuating objects which may accumulate on the outside surface of the viewing window. Light beam irradiates viewing window from inside and optics collects light radiation backscatter which varies as a function of light-scattering attenuating objects that have accumulated on the viewing window outside surface. A light backscatter detector feeds display, alarm and instrument compensation functions.

Abstract: A smooth, plastic-lined corrugated pipe having an intermediate layer of plastic foam. The pipe is made by internally coating a corrugated pipe with a foaming mixture and pressing an expandable cylinder of plastic sheet liner against the foaming mixture until the foam solidifies. An expandable mandrel apparatus presses the plastic sheet liner into position. The apparatus comprises a hollow cylinder, an elastomeric cylinder fitted on the outside of the hollow cylinder defining an annular space therebetween and a fluid conducting means communicating with the annular space.