Abstract: A counter flow combustor has a generally elongated hollow cylindrical outer casing or shell with a closure means at the upper end defining a head space and a generally elongated smaller hollow annular inner casing or combustion wall mounted therein in spaced relation to the outer casing to form an annular head space extension between the side walls of the outer casing and the inner casing which is continuous with the head space. The inner casing or combustion wall defines a primary combustion zone, and a secondary combustion zone in communication at one end with the primary combustion zone and at the end remote therefrom with the discharge outlet for delivering combustion gases from the combustor. An inlet assembly is mounted in said head space for mixing fuel and air and for delivering the same in proper ratio for combustion in said primary combustion zone and secondary combustion zone.

Abstract: A coaxial tube in tube heat exchanger has at least one fluid tight connection for holding the outer tube, inner tube and a terminal connector in assembled position, and a support insert fixedly disposed in the inner tube for operative alignment with the fluid tight connection to permit use of a relatively thin walled inner tube for said heat exchanger.

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 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: An ophthalmic measuring instrument has an instrument frame with suitable clips for mounting the instrument frame to an eyeglass frame on the patient so that spaced eye viewing openings on the instrument frame of the ophthalmic measuring instrument are disposed in alignment with the position of the lenses for the given eyeglass frame to which the instrument frame is attached. Transparent yellow and blue strips having respectively sized widths are adjustably mounted on the instrument frame for movement relative the eye viewing openings and for intersecting movement relative each other. The patient can, in an adjusted position of said yellow and blue strips, view white square targets of predetermined size as a function of the specific working or reading distance at which said targets are being viewed.

Abstract: A thermally actuated modulating valve preferably for fail safe energy conservation systems includes a valve body having, a main inlet for cold source water, an outlet for heated water, and a fluid transfer chamber connected for delivering heated water to the outlet. A proportioning slide valve assembly formed in said valve body connected to the main inlet to receive cold water therefrom includes, spaced outlets, a slide valve to vary the volume of cold water delivered respectively through the spaced outlets, one of said spaced outlets for delivering varying volumes of cold water to be heated. The valve body has a mixing chamber connected to one of the spaced outlets of the proportioning slide valve assembly to receive cold water therefrom, an inlet for the heated water from the other of said spaced outlets, an outlet for delivering the mixture of cold and heated water to the fluid transfer chamber.

Abstract: A compensator for differential thermal expansion in a multi-stage barrel type centrifugal pump has a truncated conical body section and a plurality of leaf springs extending radially from said body section, the compensator is disposed in the multi-stage barrel type centrifugal pump between the outer casing and the end most interstage pumping assembly of a plurality of serially disposed interstage pumping assemblies in the centrifugal pump so that it is biased by the leaf springs to exert a controlled force in the direction of the end most interstage pumping assembly to permit movement between the serially disposed interstage pumping assemblies with variations in temperature arising during the operation of the centrifugal pump while continuing to maintain a tight seal between these respective interstage pumping assemblies.

Abstract: A reciprocating plunger pump particularly adapted for the pumping of liquids has at least one pumping chamber and a plunger disposed for reciprocating movement therein, a common substantially integral inlet manifold for fluid to be pumped, a common integral outlet manifold for pumped fluid, and a valve assembly operatively associated and aligned with the pumping chamber and connected to the inlet manifold to receive the fluid to be pumped and to deliver the fluid to the pumping chamber, and operatively connected to the outlet manifold to pass the pumped fluid thereto. The valve assembly has cylindrical pressure containing parts including, a lower section, an intermediate section, and an upper section with a discharge passage extending end to end therethrough in the longitudinal axis of and in communication with the pumping chamber in the assembled position of the valve assembly.

Abstract: A tension wrap packaging machine has a supporting frame and a driving assembly mounted in the supporting frame, a main drive shaft is mounted in the supporting frame and at one end has a combined supporting member and safety closure disc fixedly connected thereto to be rotated by the drive shaft when the driving assembly is in operation. Mounted and rotatable with the combined supporting member and closure disc are a package supporting assembly for supporting a package to be wrapped thereon and in spaced relation thereto a wrapping material supporting assembly for the material to wrap the package. Package supporting assembly and wrapping material supporting assembly in addition to rotating with the closure disc are independently rotatable, the package supporting assembly being rotated by a planetary driving means, and the wrapping material supporting assembly being rotated by an auxiliary driving means operatively connected between the driving assembly and wrapping material supporting assembly.

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 turbine impeller pump particularly for use in a geothermal pumping system has a casing with a hollow cylindrical stator or axle fixedly connected in the longitudinal axis thereof which stator or axle defines a flow passage for motive fluid and enables a rotor assembly to be rotatably mounted thereon. The rotor has spaced composite impellers which lie in assembled position in medially disposed pumping chambers in the casing having a suction inlet for fluid to be pumped and a discharge outlet for pumped fluid. The rotor further has first and second multi-stage axial flow driving assemblies disposed on opposite sides of the spaced composite impellers so that the motive fluid for driving the same can be passed to the respective adjacent composite impellers and delivered with the fluid being pumped.

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.