Abstract: A fused electric plug having a removable cap between the electric prongs which may be unthreaded for the insertion of a fuse; the electric connector prongs extending from the plug housing are rigidly mounted on a prong holder which also holds a fuse socket in registration with an opposite tubular fuse socket.

Abstract: A solar collector wherein heat transfer from a plate to a tube grid is accomplished by the intimate engagement of the tube grid with the plate by compression and without any physical union by bonding; a light transparent sheet presses the two together against a compressible pad and the tube grid and plate are not bonded together but only held in intimate contact by compressive engagement.

Abstract: A wind turbine for converting wind forces into usable energy has a main shaft rotatably mounted in the axis of rotation for the wind turbine, and a pair of coacting complementary longitudinally extending vane members are connected to each other by a plurality of support and transmission assemblies in the form of articulated members and to the main or driven shaft for driving engagement thereof. The coacting vane members may either have straight side edges or preferably have spiralled or helically shaped side edges which in the closed position are aligned and in abutment with each other to define and form a right circular cylinder in side elevation. The vanes are movable between a normally open starting position and a closed position to vary the total vane surface available for contact by the wind forces acting at any given time when the wind turbine is in operation.

Abstract: A dual buoyancy device having two external dimensions, in the smaller of which, one end is closed by an elastic sheet undistended, and in the greater of which the sheet is distended from its normal position thereby increasing the external dimension of the device; the distention of the sheet is accomplished by a thruster member bearing on the sheet which thruster is impelled by a weight and lever system actuated by gravity, which causes the thruster to distend the sheet.

Abstract: The burner for a plurality of fluid streams provides a discharge nozzle on the end of a fuel conduit; the fuel conduit is surrounded by an air or gas conduit; in the space between the inner wall of the air conduit and the outer wall of the fuel conduit, an annulus is positioned; the annulus has a bluff downstream end in general registration with the end of the fuel conduit and creates a toroidal turbulent eddy of air or gas that enhances combustion without materially accelerating the atomized fuel.

Abstract: A combination rechargeable flashlight and charger base comprising a flashlight with a particularly shaped enlargement thereon and a charger base with a correspondingly particularly shaped socket thereon; the enlargement on the flashlight and the socket on the charger base correspond closely with each other and interfit with each other; the enlargement on the flashlight has a magnet applied thereto and the socket in the charger base has magnetic material therein for magnetic interengagement with the magnet when the enlargement is interfitted with the socket on the charger base.

Abstract: A method and apparatus for discharging sheets one by one from a stack wherein a reciprocating ejector foot engages the top sheet of the stack and urges it against barriers positioned to intercept the corners of the sheet; the barriers are disposed obliquely to the plane defined by the sheet thereby tending to block the corners of the sheet from moving out of the tray but permitting the portion of the sheet between the corners to buckle upwardly and enter the nip of a pair of rollers, raising the corners of the sheet from engagement with the oblique corner barriers and pulling it from the tray.

Abstract: A paint roller cage assembly apparatus in which a group of four cage wires are held and affirmatively positioned generally as if at the corners of a square; a cage wire cap with sockets for the cage wires is then applied to one end of the cage wires, and a similar cage wire cap is next applied to the other end of the cage wires, thereby automatically assembling a paint roller cage; the apparatus includes cage wire feeders, and a plurality of cage wire holders in the form of pivotably associated links which may be pivoted to position the wires for the application of the caps.

Abstract: A stencil sheet is prepared with an ink-impervious coating of a film forming, solventless olefinic material. The coating includes a photopolymerization initiator, and may be applied to a tissue base in liquid form and thereafter cured by exposure to ultraviolet radiation. The present invention reduces the cost and pollution generation that conventionally attends the preparation of stencil sheets.

Abstract: A molded, solid, high density, nesting pallet, for barrels or drums, having four-way entry, dimensioned to insure tine positioning of a fork-lift, vertically below the center of gravity of individual barrels or drums, or slightly outboard thereof, and providing a load-bearing surface for a symmetrical load of four barrels or drums on sites surrounded by a raised lip; and pallet legs having indentations positioned to register with flanged tops of barrels or drums upon which a loaded pallet may be stacked.

Abstract: A wound boiler having an elongated hollow slab wound about a horizontal axis and the inner convolution defining a firebox and the outer convolutions defining a combustion gas passage leading to an exhaust.

Abstract: A meat processing machine wherein a plurality of circular blades are rotated on a macerating blade shaft; between each of the blades, there is rigidly positioned, an arm with a generally rectangular cross-sectional area which performs the function of bearing on and compressing meat to be cut by the circular blades, and of stripping the meat from between the circular knives after it is cut; the rigid arms are highly resistent to deformation during the cutting process and are mounted at each end on shafts.

Abstract: A holder for an abrasive plate wherein a rigid plate is provided with a dress of abrasive grit on its contact face; a head on a shaft is provided with a peripheral flange defining a seat for a pad of magnetic material which is magnetically attracted to the seat defined by the flange and magnetically attracts the abrasive plate.

Abstract: A polyphase variable frequency inverter with output voltage control provides a polyphase AC output from a constant potential DC supply, and comprises a chopper circuit and an inverter circuit. The chopper circuit further comprises a silicon controlled rectifier in parallel with a reverse biased diode. The anode of the silicon controlled rectifier and the cathode of the reverse biased diode are connected to the positive terminal of the constant potential DC supply while the cathode of the silicon controlled rectifier and the anode of the reverse biased diode are connected to the respective silicon controlled rectifiers and reverse biased diodes of the inverter circuit. The inverter circuit further comprises a plurality of branches, each including a first silicon controlled rectifier in series with a second silicon controlled rectifier, each such silicon controlled rectifier having in parallel therewith a reverse biased diode.

Abstract: A medicine dropper cap and bulb assembly apparatus including a first orientation means for positioning the caps for delivery to a chute for insertion of a bulb at an assembly station; a second orientation means for medicine dropper bulbs to be positioned for insertion into a cap and delivery to the assembly station; a rod for driving the bulbs into seating engagement on the caps.

Abstract: A visual inspection apparatus wherein a plurality of rollers conveying articles to be inspected are driven linearly at one rate of speed and the rollers are rotated at a pre-selected rate of rotation, infinitely variable at an inspection station, by frictional contact with a loop moving at a controlled rate of speed.

Abstract: A paint roller cage assembly apparatus in which a group of four cage wires are held and affirmatively positioned generally as if at the corners of a square; a cage wire cap with sockets for the cage wires is then applied to one end of the cage wires, and a similar cage wire cap is next applied to the other end of the cage wires, thereby automatically assembling a paint roller cage; the apparatus includes cage wire feeders, and a plurality of cage wire holders in the form of pivotably associated links which may be pivoted to position the wires for the application of the caps.

Abstract: A film gate for being received in a cassette which holds a film strip for projection therefrom; the gate provides stationary tapered guides against which a strip not lying precisely in a preselected focal plane, is cammed toward the preselected focal plane by the tapered guide fingers; an opposed movable guide on a movable portion of the film gate opposite to the stationary guide is provided with arcuate guide fingers to prevent the cammed film strip from moving away from the preselected focal plane.

Abstract: A tubesheet in which an integral annular concentric support formed on a tubular rim, holds a tube plate in spaced relation to the rim, so as to allow the support to deflect during transient temperature and pressure changes without becoming overstressed.

Abstract: A directional gyro for aircraft having on its stationary face plate, color zones referable separately to portions of the 360.degree. movable directional scale; each color zone indicating a particular entry procedure (direct, parallel, or tear drop) for the preselected radial.