Abstract: An elevated and elongated boom is centrally pivoted for rocking movement in a vertical plane through the horizontal plane. Provision is made to align such plane with the direction of the wind. A pair of free wings are mounted on the fore and aft ends of the boom with control panels being oscullatably mounted on such wings for determining by their relative positions and aerodynamic equilibrium reaction thereto the angle of attack of such wings. Provision is made to control the relative positions of the control panels with respect to their respective wings so that the wings have angles of attack of opposite sense, with such senses being reversed as the boom approaches each predetermined limit of its rocking motion.

Abstract: The high velocity gradients associated with the shear layer or boundary layer of a supersonic gas stream, especially the potential core thereof, are applied to form fibers of a melted material projected across such gradients. Optimization of the effects of such gradients is sought by sustaining the magnitude of the gradients as long as possible by minimizing shear layer growth rate and/or stabilizing the rate of vortex formation, and by synchronizing the rate of projection of melt with the rate of vortex production. Provisions such as vortex triggering or density loading are made for reducing the shear layer growth rate. Provisions are also made for intermittently feeding melt at a rate synchronized with the rate of vortex formation. Provisions for regulating the temperature in the shear layer are made such as appropriately controlling stagnation gas temperature, causing an exothermal reaction within the gas stream, or causing combustion of the gas stream within an oxygen containing fiberization chamber.

Abstract: A hand truck wherein the load supporting platform is pivoted to swing from its operative position to a substantially flush and collapsed position against the front of the lower part of the frame, and wherein the upper and handle portion of the frame is pivoted to the lower part of the frame to swing from its operative position to a collapsed position overlapping the platform when the latter is collapsed. A fastener is provided for alternatively securing the upper portion of the frame in its operative and inoperative positions.

Abstract: A planting machine wherein its planter wheel and a packer wheel trailing the same respectively have peripheral velocities greater and less than the speed of advance of the machine. Shoes on the former open the ground and deposit a seed therein on relative rearward movement, with feet on the packer wheel covering deposited seeds on forward movement thereof relative to the ground. The drives for the planter and packer wheels are interconnected to minimize the overall power requirement. Seeds are dispensed from a hopper to a position adjacent the axle of the planter wheel and spirally nested delivery tubes gravitationally deliver the dispensed seeds to the planter shoes in an arrangement such that a seed is delivered to a shoe only after a predetermined advance of the seed has occurred subsequent to its having been dispensed.

Abstract: An apparatus for use in combination with a specialized rotary steel file for enabling the sharpening of saw chains that includes an inverted channel-shaped body for accommodating a chain saw bar and saw chain therein. Adjustable chain centering elements serve to limit and predetermine the desired spatial relationship of the body and the bar which can be secured by clamping screws engageable with the bar. A recess in the body constitutes a window giving access to the saw chain, with guide grooves in the body at the bottom of the recess serving to position the rotary file during the sharpening procedure. A chain advancing unit is provided for properly advancing one tooth at a time to register properly a tooth to be filed with the grooves. A gauge is positionable in the recess to enable dressing gauge teeth of the saw chain to proper height is also provided.

Abstract: A pneumatic valve bag packer provided with an air feed to the hopper that includes an eductor pump having its inlet connected to the hopper so as to produce a subatmospheric pressure in the hopper and consequent reverse air flow in the filling spout when the discharge of the eductor pump is open. The arrangement is such that the closure of the pump discharge by a valve provided for this purpose will result in superatmospheric pressure in the hopper suitable for bag filling. Abrupt opening of the pump discharge causes a vacuum pulse within as well as a sustained low pressure in the hopper so as to promptly stop and prevent material dribble from the filling spout.

Abstract: A bale roller inclusive of an upstanding support frame that can be mounted on the front end of a dirigible and self-propelled vehicle such as a tractor or truck with an auxiliary frame pivotally mounted on the lower end of the support frame for vertical swinging movement about a transverse axis between a raised retracted position and a forwardly projecting operative position. The forward end of the auxiliary frame is constituted of a fixed transverse member having oppositely projecting end portions on which are rotatably mounted a pair of wheels. The wheels have pneumatic tires thereon, and are mounted on the transverse member in the same manner as is conventional for the mounting of automotive front wheels on their spindles. A chain can be used to adjustably support the auxiliary frame from the support frame, or alternatively a fluid actuated cylinder and piston assembly can connect the frames to control their relative positions.

Abstract: Therapeutic apparatus having a frame that includes a pair of laterally spaced A-frames in part defined by a user's seat extending therebetween and seat supports. A pair of independent tubular guides are connected to the apices of the A-frames for pivotal movement about aligned transverse axes, and each of the guides has an elongated and resiliently extensible operating element reciprocably extending therethrough that is provided at its forward end with a laterally extending handle and at its rear end with a laterally extending and spring-mounted roller that is engageable with the user's back upon the user urging the operating element forwardly in its guide. Rocking of a guide and its element in a vertical plane by the user manipulating the associated handle causes the associated roller to roll up and down against the user's back. A foot operable crank is mounted at a position below and forwardly of the seat to enable the user to exercise his legs while exercising his arms and shoulders to massage his back.

Abstract: A subsurface soil sampler constituted of a hollow tube having a pointed closure at its lower end for soil penetration and a handle at its upper end for manipulation of the sampler. A combined footrest and penetration limiter is detachably secured at a vertically selected position on the tube enabling application of the user's weight to soil penetration to a selected depth. The tube is provided with a lateral opening adjacent its lower end that is partially bounded by an outwardly offset lip for cutting and diverting a specimen of ambient soil into the tube on movement of the tube such as to advance the free edge of the lip into the soil. Species are disclosed with tangentially and vertically directed lips respectively operative to sample on turning and vertical movement of the tube. A ladle is provided for removing the specimen from the tube. One form of the ladle includes a valve element such that the ladle can be selectively positioned to close and open the lateral opening.

Abstract: A series of electric lamps spaced along the interior of a flexible vinyl tube, such lamps being connected in electric parallel with each other by a pair of insulated conductors that exit from the tube through an opening adjacent one end of the tube. A thermoplastic sealant having a vinyl content is applied by a special procedure into each of the ends of the tube to seal closed such ends of the tube as well as the point of egress of the conductors. The tube is disposed in a channel-like mounting bracket having a restricted entrance through which the tube is viewable. A special procedure is provided for connecting uninsulated leads of the lamps to insulated parallel conductors such that no additional insulation is required.

Abstract: For the purpose of increasing internal combustion engine efficiency and of decreasing the polluting content of the engine exhaust, the present invention centrifuges a conventionally produced liquid fuel-air mixture to separate and maintain the liquid content thereof in contact with a heated surface to collect latent heat energy until the same is evaporated and then using the molecular spreading energy forces to attain substantially equally spaced fuel vapor molecules among all of the equally spaced air molecules as they move into the combustion chamber of the engine, to thereby assure a more complete molecular fuel-air mixture, for more complete, efficient and pollution emission free combustion.

Abstract: An expansible and disposable container for popping popcorn prepackaged with cooking oil therein in a microwave oven; such container being made of a material impervious to cooking oil and having its upper side provided with a pattern of weakness that serves as an excess vapor pressure release during the popping and which thereafter serves for convenient opening of the container so that the latter can be used as a serving tray.

Abstract: A stile clamp provided with a first clamp manually operable to hold a rail against a base, and a second clamp operable in a direction perpendicular to that of the first clamp to force a stile against the held rail. The first clamp and the base have mutually perpendicular surfaces, which facilitate proper orientation of the rail and the stile before operation of the clamps fixes their positions.

Abstract: An occlusal instrument having indicia whereby all adjustments can be readily replicated, such adjustments being the relatively vertical position of three measuring means, with one of such means being adjustably extensible rearwardly; both of the other means being adjustably spreadable laterally, and one of such means being adjustable as to its angle of contact with the head about a lateral axis.

Abstract: A portable workstand for power tools and the like which is convertible from a tool utilization condition to a portable condition wherein a wheel and a pair of handles extend therefrom for wheelbarrow-like portability. The handles are connected to the wheel in an arrangement such that pivotal movement of the handles from unextended and depending positions to their extended positions moves the wheel from a retracted position within a cavity in the stand to its extended position. A hand brake for the wheel is provided and provision is also made for releasably retaining the handles in their extended positions against inadvertent movement therefrom.

Abstract: A pizza cutter wherein the plunger is mounted for vertical reciprocation within a guard sleeve by an open spider fixed to the sleeve to expose a cutter mounted on the plunger below the spider for cleaning and visual observation during use. The cutter includes a plurality of radially extending blades detachably mounted on the plunger in an arrangement such that the sleeve, except when removed from the plunger, prevents detachment of the blades.

Abstract: An automobile mechanic's aid, which is largely collapsible for convenient storage and shipping, which is adjustable to position a tool holding tray at selected heights, and which includes support structure enabling concurrent use of the tray as a tray and as a seat. A work illuminating electric lamp is included which is adjustably positionable and which can be selectively powered from a convenience outlet of an alternating current power main or an automobile storage battery.