Abstract: A pair of roller wheel assemblies that are secured in longitudinally spaced relationship to an elongate platform of a skateboard. Each assembly includes a first centrally disposed resilient roller wheel and a pair of indepndently rotatable second rollers of generally frusto-conical shape situated on opposite sides of the first roller wheel. When the skateboard is guided in a straight path by a user the major portion of his weight is supported by the first roller wheels, and there is a minimum tendency for the skateboard to slow down in coasting. However, when the platform is tilted transversely by a user to guide the skateboard in a curved path, one of the second rollers is forced into rotatable frictional contact with the supporting surface to prevent the skateboard slipping relative to the latter.

Abstract: A mechanically or electrically actuated barbeque blower that may be removably secured to the rolled upper edge of a barbeque fire box or other desired portion of the barbeque unit to generate a draft in a desired direction that is of material assistance in igniting all of the charcoal briquettes in the fire box, as well as maintaining the briquettes in a glowing heat-emitting condition.

Abstract: An improved cutter assembly adapted for use with a rotary edger comprising a circular spool for storing peripherally thereon a plurality of plastic filaments, such spool being receivable within a circular retainer which in turn is provided with a plurality of radially extending peripheral openings formed to direct the corresponding filaments to the exterior of the retainer. The spool and the retainer are secured for rotation on the mounting arbor of the rotary device, the retainer furthermore including an exteriorly directed peripheral groove around the circumference thereof arranged to include the filament openings. The spool itself includes a plurality of filament securing openings to facilitate assembly. In an alternative embodiment, the exterior face of the spool is cut out with a plurality of radial notches through which the filaments are passed to permit insertion of the spool into the retainer.

Abstract: An exhaust hood vented to the atmosphere comprising a double-walled stack and a double-walled hood structure where the gap between the walls of the stack and the hood are arranged for communication. A first blower is mounted on the exterior end of the stack for ingesting exterior air into the gap between the walls, with this ingested air flowing downwardly to be injected along the interior surfaces of the hood. A second blower is mounted in the stack for withdrawing the combination of the injected air and any fumes collected in said hood.

Abstract: Method and apparatus for achieving various degrees of stress transfer within a resilient support pad comprising slots arranged longitudinally in the pad surface disposed to support the upper torso of a person and a rectangular matrix of slots in the support area below the lower torso. To provide for various levels of stress transfer control the pad itself may comprise two contiguous layers, each slotted to a desired depth. Further variants of the slot structure provide for narrow connecting webs thereacross for allowing controlled stress transfer thereacross.

Abstract: A power driven shaver of the type that includes a housing that has a prime mover therein, with one end of the housing supporting a transverse thin curved shield. The shield has a number of longitudinally and circumferentially spaced slots therein that are of such dimension that whiskers may extend therethrough. A number of helical shaped blades are rotated by the prime mover in close proximity to the interior surface of the shield, with the blades serving to sever inwardly projecting portions of the whisker by a rotating slicing action. The present power driven shaver is free of vibration, and exerts no uncomfortable pulling action on whiskers as they are severed, or the whiskers as they are cut are not compressed or pinched.

Abstract: An assembly capable of removably engaging a first leg of a welder's square, and supporting the welder's square on a substantially horizontal pipe or structural member, with the second leg of the welder's square normally disposed to the longitudinal center line of the pipe or structural member. When the welder's square and assembly are so mounted as a unit on the pipe, the second leg may be used to align a flange relative to an end of the pipe, determine whether an end edge of the pipe is normal to the longitudinal center line of the pipe, and indicate a transverse cutting line on the pipe. Two of the units when disposed back-to-back may be used to longitudinally align two lengths of pipe that have adjacent ends thereof in abutting contact. The assembly may be used to support a welder's square on a substantially horizontal structural member, such as a channel or eye beam, to achieve like results.

Abstract: A power generating device that transforms the energy of vapor under pressure from a volatile liquid into useful rotational power that may be used in a stationary location or to propel a vehicle. The vapor under pressure is generated either by heating the volatile liquid in a confined space by means of fuel, or by utilizing solar energy for this purpose.After the vapor has passed through the power generating device it is cooled and returned to the liquid state. The volatile liquid is, by means of a pump, returned to the confined space where it is again heated to transform to vapor under pressure, with the vapor then being recycled through the power generating device.

Abstract: In a center pivot irrigation system, comprising a hollow tube advanced on a wheeled carriage around a pivot and including a plurality of spray heads thereon, the improvement comprising a telescopically received extension deployable from the end of the pivoting tube at the corners of a rectangular plot. A stepping switch, fixed to the pivot, provides the requisite deployment signals at predetermined angular positions, releasing the extension and turning the wheels on a sliding support frame for advancement or retraction. The signals from the stepping switch are furthermore combined with a plurality of status signals to indicate a failure.

Abstract: A longitudinally and angularly adjustable back rest assembly capable of being removably mounted on a motorcycle that has a rearwardly disposed frame portion that supports a second U-shaped frame that is secured to the base portion of an elongate seat. The seat is of sufficient length to support a single rider or a rider and a passenger. The back rest assembly may occupy any one of a number of longitudinal positions relative to the seat, and may be angularly adjusted when in any one of these positions. The back rest may accordingly be adjusted for use by either a single rider when he straddles the seat or a passenger when he occupies a like position rearwardly of the rider.

Abstract: A waste gas heat recovery device and method of using the same, which device may be interposed between a stack and associated to use the waste heat and minimize the heat energy required in operating the furnace. The device may also be used with any type furnace or heat emitting device in which heated waste gas and air for combustion of fuel are discharged through the waste gas flues alternately.

Abstract: A portable hair stylist's accessory adapted to receive and hold one or more pairs of shears, combs and the like in individual pouches until needed, and the shears and combs when stored in the pouches and prior to being used, being subjected to a pressurized disinfectant to kill bacteria and germs that may be lodged thereon. The pressurized disinfectant is disposed in a container concealed within the accessory and is released therefrom as required by a manually operated valve to flow through passages defined in the accessory to the pouches holding the shears, combs and the like.

Abstract: A switch articulating device in combination with a modified conventional timer, the device including a bistable auxiliary switch lever connected to a switch engaging shuttle bracket, the switch lever and the bracket being retained in a housing adapted for installation over a wall switch. The conventional mechanical timer is mounted on the exterior of the housing and is modified to provide a timer shaft attached to a cam and extending into the interior of the housing. The cam is aligned to oppose one end of rocker arm, which at the other end articulates, through a push plate, a bellcrank attached to the switch lever. In this manner the switch lever can be either articulated by the timer or can be manually controlled to operate the circuit.

Abstract: An improved device having no moving parts which, when in communication with the air intake of a carburetor of an internal combustion engine injects a mist of water into the air-fuel mixture formed by the carburetor, which water when in the zone of combustion in the engine reacts with carbon monoxide and free carbon therein to form carbon dioxide and hydrogen. The hydrogen so formed reacts with oxygen in the air-fuel mixture to form water that is either discharged in the exhaust from the engine or reacts with additional carbon dioxide and carbon in the zone of combustion to produce further carbon dioxide and hydrogen that continues until the carbon dioxide and water are discharged in the exhaust from the engine. The device when operating not only lowers the content of carbon monoxide in the exhaust discharged from the engine, but also tends to remove and minimize the depositing of carbon on spark plugs and in the cylinders of the engine.

Abstract: A rotary internal combustion engine that includes a housing that defines an elliptical cavity in which a rotor is disposed. The rotor slidably supports a number of circumferentially spaced, radially disposed blades, with each pair of blades defining a chamber therebetween. The rotor is so rotatably supported in the cavity that the ratio of the intake chamber volume may be adjusted so that there is a minimum residual pressure on exhaust gases and the efficiency of the engine is increased as a result thereof.

Abstract: A pair of portable supports that are adapted to removably engage longitudinally spaced sections of a ski to support the latter in an elevated substantially horizontal position above a floor surface to permit the ski to be tuned or maintenance work performed thereon. The pair of ski supports are of such structure that they are adapted to removably engage the edges of a longitudinal section of the ski irrespective of the configuration of the edges.

Abstract: A light weight, portable, inexpensive gun support that may be removably secured to the barrel of either a rifle or revolver, with the support including a pair of angularly and longitudinally adjustable legs that permit the support to rest on any desired stationary surface irrespective of the configuration or angulation of the latter. The support when removed from a first position on the barrel of a gun may be disposed in a second compact position to permit the convenient carrying of the latter in a pocket of a garment. The gun support is versatile in use and is particularly adapted for use in hunting, target practice, adjusting sights or adjusting rifle scopes.

Abstract: A trailer hitch alignment device adapted to be releasably mounted to the draw bar of an automobile including a spring loaded spool from which a cable is played out to be turned around a guide pulley into a tubular guide. The tubular guide is pivotally mounted to align with the cable, concurrently articulating the wiper of a potentiometer. The potentiometer is connected to a meter inside the automobile, providing a visual indication of the angle of departure of the cable. Thus, by stretching the cable to connect to the hitch of a trailer, a remote indication on the meter will indicate the necessary direction of advancement of the automobile in order to effect alignment for coupling.

Abstract: An anti-pollution nozzle assembly that removably engages the fuel inlet tube on an automotive vehicle and removes fuel vapor from the tank thereof at a rate that varies with the rate at which fuel is discharged into said tank by said nozzle assembly, with the removed fuel vapor being returned to the fuel storage tank of the service station where the anti-pollution nozzle assembly is employed.