Abstract: An apparatus for and method of pouring molten metal from a refractory vessel into the sprue of a mold where the vessel is in contact with the sprue. Molten metal is poured through the orifice of a nozzle in the bottom of the vessel. Laminar flow and velocity of the molten metal through the orifice are controlled by a stopper that extends from the orifice and also displaces molten metal in the sprue of the mold when the stopper is in the closed position to minimize excess buildup of solidified metal in the volume of the sprue. Filtering of dross can be accomplished in the refractory vessel and heating means can be provided to hold the molten metal at the appropriate temperature.

Abstract: A reel or spool for winding or unwinding of cable, wire, or the like includes a hub having a cylindrical wall defining an outer barrel surface and an axial end wall suitable for the application of labels or other identification indicia. A flange extends radially from the outer barrel adjacent each end wall. The flanges have a plurality of integrally formed, radially extending ribs disposed on their outer surface. The connection between the ribs, the axial end wall and the barrel surface of the hub being within the radial extent of the cylindrical wall. In one form of the invention, the hub includes an inclined wall connecting the cylindrical wall, the axial end wall and the ribs.

Abstract: A heat ejection device is disclosed for a heating system. The heat ejection device is adapted to mix ambient air from an interior with bleed air from a heat source. The heat ejection device includes a housing with an inner passage, an inlet and an outlet. The inlet is adapted to channel ambient air into the housing. The outlet is adapted to channel mixed heated and ambient air out of the housing. A dispenser is located in the housing between the housing inlet and outlet and includes an inner chamber which is adapted to receive heated air from a bleed line. The dispenser has a plurality of apertures formed in it which permit air to flow from the inner chamber into the inner passage for mixing with ambient air to form a flow of mixed air. An acoustically absorptive inlet liner is mounted on an inner surface of the housing at the housing inlet. The absorptive inlet liner is adapted to direct ambient air past the dispenser to minimize turbulence and absorb noise.

Abstract: A helicopter main rotor pylon support structure including a framing structure for supporting the loads applied to the main rotor pylon, and a fire shield for preventing fire from transmitting from an engine or exhaust compartment into an adjacent compartment. The framing structure includes first and second composite main beams, each beam extending adjacent to a engine compartment and an exhaust duct compartment. A plurality of bridge members preferably extend between and connect with the first and second main beams and are formed integral therewith. A plurality of vertical posts are attached to and spaced along the main beams. The vertical posts are engaged with discrete attachment points on the helicopter. There is at least one fire panel mounted to each main beam. The fire panel has side edges which are slidingly engaged with the vertical posts, and a lower edge which is slidingly engaged with a flange formed on the helicopter.

Abstract: The machine consists of a blast housing, a reclaim duct, a reclaim hopper and a support framework. In use, the machine is supported on a horizontal surface over which it is driven and carries out a shot blasting or other operation on an adjacent vertical surface. The blast housing contains a centrifugal throwing wheel which is driven by an electric motor, whereby particulate material introduced into the cage is projected at high speed onto the surface. The reclaim duct receives particulate material, together with debris produced by the action of the material on the surface which rebounds from the surface, and feeds the debris and particulate material to the reclaim hopper. The central axis of the reclaim duct follows a three-dimensionally curved path which describes an upward turn through approximately 90.degree. and also an arc of about 145.degree. in an imaginary horizontal plane perpendicular to the vertical surface. The upper end of the reclaim duct is connected to the reclaim hopper.

Abstract: A halogen bulb is composed essentially of a tubular halogen bulb having two conductive ends, a thick hollow glass envelope and a socket for holding securely the tubular halogen bulb in the thick hollow glass envelope. The thick glass envelope has a thickness ranging between about 2 mm and about 8 mm, which is made integrally or made of two component parts joined together. The thick hollow glass envelope may be provided with protuberances perpendicular to an outer surface opposite to the socket, and/or ventilation holes to reduce the temperature of the double-enveloped halogen bulb at work. The socket may be provided with one or more ventilation holes at the closed end thereof. A bracket is used inside the thick hollow glass envelope for holding the tubular halogen bulb such that the tubular halogen bulb is perpendicular to the longitudinal axis of socket.

Abstract: A transfer device for picking up and placing resin preimpregnated composite plies. The transfer device includes a movable transfer head with a plurality of transfer feet movably mounted within it. Each transfer foot includes a support cage with a plurality of spaced posts extending between upper and lower ends. A mounting plate is located on the support cage. A pickup foot extends from the lower end of the support cage and has a channel formed through it which communicates with an opening in the lower end of the support cage. The pickup foot includes a tip end adapted to contact the resin preimpregnated composite ply. A valve is mounted within the support cage and includes a valve member located adjacent to the opening in the lower end of the support cage. The valve member is movable between a closed position and an open position. A spring surrounds at least a portion of the periphery of the transfer foot and biases the transfer foot into the transfer head.

Abstract: A composite optical element comprises a first optical material and a second optical material joined to one plane of a third optical material. The first and second optical materials are of equal thickness and having ground surfaces flush with each other on both of their principal planes.The first and second optical materials are fixedly joined to one another, and one of the principal planes of the two materials is ground. Then, the ground principal plane of the first and second optical materials is joined to the third optical material. Then, the other principal plane of the first and second optical materials is ground.A preferred embodiment is an optical isolator wherein the first and second optical materials are birefringent materials and are joined to one side of a Faraday rotator having a Faraday rotational angle of approximately 45.degree. and third and fourth birefringent materials are similarly joined to the other side of the rotator.

Abstract: Methods of enhancing an antigen-induced immune response through use of a ribonucleocapsid complex are provided. Composition containing a ribonucleocapsid complex and an antigen which are capable of enhancing the immune response to the antigen are also provided.

Abstract: A curb-climbing front wheel drive power wheelchair has a frame, a seat connected to the frame, a pair of drive wheels connected to the frame and rotatable about a transverse axis below a portion of the seat supporting the wheelchair occupant's thighs. The power wheelchair also has at least one ground-engaging idler wheel connected to the frame behind the drive wheels and anti-tip wheels forward of the drive wheels, rigidly connected to the motors for pivotal movement.

Abstract: In a process and apparatus for producing elongate curved hollow bodies at least partially comprising thermoplastic material a preform is extruded from an extrusion system head and engaged by a gripping means. The preform is moved by the gripping means into the region of a guide stencil disposed above the mold cavity of a mold portion of a divided blow molding mold and introduced into the mold cavity by a simultaneous downward movement of the gripping means and a movement following the configuration of the guide stencil. The guide stencil has two mutually opposite walls, the spacing of which increases in an upward direction and the spacing of which at the bottom of the guide stencil approximately corresponds to the maximum width of the mold cavity. The preform is thus guided towards the mold cavity by the walls, acquiring its definitive orientation with respect thereto by virtue of such guidance, passing through a lower opening in the guide stencil into the mold cavity.

Abstract: The apparatus comprises a washing chamber and a washing brush on the end of a hose leading to a reservoir for liquid to be applied. The hose is connected to an outlet pipe of the reservoir having a one-way valve which is immersed in liquid in the reservoir and allows movement of the brush to pump liquid from the reservoir to the chamber. Liquid supplied to the chamber is collected in a sump, the overflow of which feeds the reservoir. A filter screen is positioned between the chamber and the sump, in which solid material precipitates, allowing liquid to be recycled. The apparatus can be used, for example, for removal of ink from a used screen, removal of stencil material from a used screen or application of a degreasing preparation to a screen prior to use.

Abstract: A vial cap holder and cap piercer for holding vials of varying sizes sealed with pierceable caps, said holder comprising: a frame, a holder adjustably mounted to said frame, a plate mounted on said frame below said holder, the plate having an aperture, a cup mounted on top of said plate for receiving a pierceable cap of said vial, a retractable needle for piercing the pierceable cap of the vial and to communicate with the contents of the vial, a driver for extending and retracting said needle, and a tongue pivotally mounted to the holder, the tongue having a beveled surface for receiving the vial.

Abstract: The invention concerns a method for the production of unsymmetrically substituted cyanobiphenyls by the slow addition of an aryl Grignard compound to an optionally substituted bromobenzonitrile in the presence of a palladium complex catalyst.

Abstract: An induction heating device for controlling the temperature distribution in an electrically conductive material, or susceptor, when heated by induced eddy currents in the material. A non-electrically conductive material can be heated in a controlled manner by placing the material near to the susceptor. Variable power is applied to multiple induction coil sections wound around the length of the susceptor from a power source by one or more switching circuits. The coil sections can be overlapped or counter-wound between adjacent coil sections, or provided power in a cascaded manner, to achieve desired temperature distributions in the susceptor. A control circuit is used to control the power applied to each coil section and the output of the power source. By placing a non-electrically conductive material near to the susceptor the material can be heated in a controlled manner.

Abstract: The present invention provides a container for storing and dispensing food stuffs. The container includes a shell having a sidewall and a bottom wall. Together, the sidewall and the bottom wall define an interior of the container. The bottom wall is detachably connected to the sidewall. The apparatus further includes a liner positioned within the container for holding the food stuffs. Upon the application of an appropriate force, the bottom wall is detached from the sidewall and forced into the interior of the container. As the bottom wall is forced into the interior of the container, the liner collapses and the food stuffs are forced towards an opening in the container opposite to the bottom wall.

Abstract: A two terminal dual battery with a micro-processor base controller is incorporated into a single unit. Two 12 volt batteries are contained in a single housing sharing a common negative terminal and a single positive terminal. The auxiliary battery is permanently coupled to the external terminals of the battery. A starter section may be coupled to the external battery terminals in parallel with the auxiliary section using a latching electromechanical relay. The relay is controlled by the micro-processor in response to external inputs and battery parameters. One section of the battery is constructed for deep cyclic uses and normally provides power to run auxiliary loads while the other battery section is constructed to fulfill requirements of low internal resistance and efficient low duration high current output.

Abstract: A suction device for feeding sheets of material comprises a housing (38) connectable by a pipe (40) to a vacuum device and having apertures (54a, 54b, 54c, 54d, 58) through which a suction effect can be created. An eccentric roller (46) imparts a corrugation to the attracted sheet. The apertures are shaped and located so that there is a boost in the suction exerted on the sheet at the time that it is distorted. Continuous and pulsed air flows are used as well as aids to separate sheets individually from a stack.

Abstract: A flower pot cover of single circular sheet construction comprising a circular planar bottom, an outwardly bowed generally cylindrical side portion upstanding from said bottom about the periphery thereof, said side portion being loosely folded over and against itself to form a circumferentially continuous series of randomly shaped rolled, non-planar vertically elongated ruffles presenting a curved and bowed outwardly facing surface along said cylindrical side portion and extending generally parallel with an axis of said cylinder and forming rolls bowing outwardly proximate the vertical midpoint thereof to provide greater pot cover diameter proximate the vertical midpoint of said side portion than at upper and lower circular extremities of said side portion, an annular lip having a circular outer periphery and extending angularly outwardly and upwardly from said cylindrical side portion about the upper extremity thereof, said annular lip being loosely folded and curled against itself to form a circumferentiall

Abstract: A precision voltage regulator is provided for a capacitor-charging power supply. Both the power supply output and the load capacitor are shunted at the same time by a shunt control circuit. The load capacitor shunt is maintained for a period of time determined by the hysteresis of a precision comparator that compares the voltage across the capacitor with a program voltage that has been adjusted for the power supply's instantaneous current. The regulator is particularly applicable to high power applications with a high repetition rates.