Abstract: A portable screening plant which can be readily transported and easily installed at an operating site for screening of gravel or other particulate materials. The plant comprises an endless loop conveyor belt mounted on a frame which also supports a hopper for supply of material to the belt. The shaker is adjustably attached to the frame by a linkage mechanism to permit raising of the shaker to an operating position and lower thereof to a closed travelling position. The hopper includes reciprocatory wiper blades to prevent accumulation of material on the hopper walls.

Abstract: After the fly ash is removed from the flue gases by a separator, it is introduced into a combustion chamber which may be either the primary combustion chamber of the furnace or a separate chamber in a secondary combustion chamber. There, it is burned until only the liquid slag remains and then removed, along with the other liquid slag formed in the furnace by the primary combustion process. Various methods and apparatus are described for carrying out the introduction of the fly ash into the combustion chamber.

Abstract: A device that enables photographic images, black and white or color, to be projected onto a screen by means of a slide projector and have that image rotate, clockwise or counter-clockwise, and at various speeds of rotation, and to be externally controlled to stop and start on a real time manual basis or on an automatic programmed basis. The slide carrier has a motor mounted thereon and interfaces with the projector in the manner of a normal slide carrier as it moves between storage and projector positions. Electrical connection is made through an interconnecting unit to a control box whereby the speed and direction of the slide rotation are controlled.

Abstract: A foldable, stackable pallet suitable for dense objects, such as bags of coins. The pallet has two removable side walls which can be stored flat beneath folded end walls which are erected by a pair of depending plates having vertical slots engaging transverse pivots.

Abstract: A segmented housing for electrical instrumentation particularly panel mounted meters of the electro-optical readout variety. The housing is formed in first and second halves separating the housing into substantially similar upper and lower portions which are secured together and to a panel mounting bracket by recessed bolts on opposite sides. The brackets are located in side channels extending a substantial portion of the housing side length to provide a highly rigid and secure attachment. The housing halves are apertured in the rear to permit electrical connection through lugs to a circuit board within. The front halves are apertured and beveled for panel mounting with a molding surrounding the aperture through which an indicator scale is visible. One or more lens elements provides scale indication and/or scale magnification.

Abstract: A conveyor system for the transport of a product over a long travel path within a relatively small volume. A bi-directionally movable conveyor belt is disposed in a closed multiple loop path about at least one driving shaft having a number of sprockets therein each in driving engagement with a respective loop of the belt, and at least one idler shaft also having a number of sprockets, each in engagement with a respective loop of the belt. A travel path of substantial total length is provided within a small volume for movement of a product through the volume which can contain a controlled environment.

Abstract: The disclosure relates to a method for silage temperature control in a silo. Measurement transmitters are placed at points where it is desirable to check the temperature of the silage located in the silo. These measurement transmitters are activated, on temperature control, by means of an activation transmitter with an antenna. On activation, the measurement transmitters transmit a signal which is related to the ambient temperature, this signal being received by a receiver. If a measurement transmitter indicates a temperature deviating from a predetermined norm, it is localized by direction finding.

Abstract: A system for frequency locking the output of one or many laser amplifiers to a reference laser oscillator beam without injection of the reference beam into the amplifier medium. This avoids the necessity of exciting at the frequency of the desired output and of beam splitting from the oscillator to inject a portion of the oscillator radiation into each of several controlled amplifiers. The amplifier includes a lasing medium confined within a cavity and having a portion of the radiation in the medium directed onto a closed loop. A frequency selecting element is supplied within the closed loop and controlled electronically to maintain a predetermined frequency relationship to the laser beam of the reference laser oscillator. Radiation in the closed loop is thus controlled in frequency and a portion of it within the amplifier medium is diverted for repeated medium traversals in an unstable cavity configuration to achieve a desired amplification and pulse elongation.

Abstract: Method and apparatus for inhibiting dimer formation of molecules of a selected isotope type in a cooled flow of gas to enhance the effectiveness of mass difference isotope separation techniques. Molecules in the flow containing atoms of the selected isotope type are selectively excited by infrared radiation in order to inhibit the formation of dimers and larger clusters of such molecules, while the molecules not containing atoms of the selected, excited type are encouraged to form dimers and higher order aggregates by the cooling of the gaseous flow. The molecules with the excited isotope will predominate in monomers and will constitute the enriched product stream, while the aggregated group comprising molecules having the unexcited isotope will predominate in dimers and larger clusters of molecules, forming the tails stream.

Abstract: A fluid laser having a flow channel between fluid inlet and active lasing region which reduces medium heating and resulting medium disturbances. The channel includes a thin optically transparent, thermally insulating layer directly bordering the medium. The thin layer rests upon a metallic heat sink, typically cooled, which receives and removes radiated energy from the active region, preventing it from heating the medium. The thin insulating layer permits the heat sink to be cooler than the medium without causing thermal effects in the medium. The more homogeneous medium resulting from such treatment contributes to better laser beam quality.

Abstract: A flow channel for a dye laser having means for reducing thermal and pressure variations in the flowing laser medium particularly in the vicinity of active lasing in order to permit high power and high pulse rate lasing with a high quality, low divergence output beam. Pressure disturbances and turbulence are minimized with a number of flow design techniques including a configured input conduit for even pressure drop, a set of turbulence reducing screens, as well as a hydraulic pressure damping capacitor on both input and output ends of the flow channel, either side of the excitation window. A porous wall is used to exhaust the medium and isolate the lasing region from downstream effects. In addition, cooling of the conduit just upstream of the region of active lasing reduces temperature disturbances resulting from applied excitation to further minimize its disturbing effect on laser beam quality and lasing efficiency.

Abstract: An electrical interconnection board with lead sockets mounted in plated-through holes therein. The lead sockets are hollow cylindrical elements having a tapered entry opening at one end and a plurality of normally converging flexible fingers at the other end. The lead sockets are force fitted into the plated-through holes in the board with the receptacle end of the socket opening into the component side of the board. The invention is also concerned with the method for mounting lead sockets to electrical interconnection boards.

Abstract: A hose conduit comprises an inner tubular fluid conducting space which is surrounded by a ringshaped space. Openings are provided in the wall of the inner hose leading into the ringshaped space. In the ringshaped space is provided a longway passage extending through repeated bows and bends and repeatedly changing its direction. From the said longway passage openings in the outer wall of the said ringshaped space lead into the open. The assembly of the hose conduit is built up of at least two layers of thin foil which are connected together. The longway passage is obtained by profiling one of the foils, i.e. by applying a raised, embossed pattern to one of the foils.

Abstract: A mixer for different products and in particular for foundry sands.This mixer, which comprises a frame supporting a fixed mixing tank whose axis is vertical and which is provided with an emptying trap, and at least one vertical turbine plunging into the tank, in the neighborhood of the sidewall thereof, is characterized in that the tank is provided with a rotating bottom able to be rotated by a driving member, and in that the emptying trap is formed in the sidewall of the tank, in a zone other than that concerning the turbine.Application: preparation of foundry sands.

Abstract: A hollow bottle and the production method therefor. The hollow bottle of the invention is of multi-layer structure and has excellent chemical resistance and large fused adhesion strength in the pinch-off portion of the bottom. The inner layer of the bottle is made of polyamide resin and the depth of the joint groove formed in the inside surface of the inner layer in the pinch-off portion is 20% in depth as compared with the length of the pich-off portion, which portion is in a cross-sectionally tapered-off projection formed on the bottom of the bottle.In the production method of the present invention, after the multi-layer parison is extruded from dies, the lowermost end of the parison is closed and an inert gas is then blown into the parison, or the bottom of the parison is closed with blowing the inert gas. After the bottom of the parison is closed, it is transferred into a blow mold and blow molding is carried out, thereby forming a hollow bottle of the present invention.

Abstract: A system of passive or static optics for combining distinct beams of laser radiation into a number of output beams, each having colinear, superimposed beam components of the original radiation. This system further provides power sharing between the combined beams of the power in the original input beams of laser radiation.

Abstract: For presetting values of parameters in an image-reproducing process, an operator selects a spot on a transparency to be reproduced, for example by visual inspection of a projected image of an area of the transparency illuminated by a defocused light beam. The light beam is then temporarily brought to a focus on the selected spot and the light transmitted through the transparency on a photomultiplier, the signal from which is sampled within a very short period and held, after which the focused light beam is again defocused to enable the operator to select a further spot. The value of the sample signal is used in the presetting of the said parameter values. The period for which the focused light beam falls on the transparency is made small enough to avoid the bleaching of the transparency at the illuminated spot.

Abstract: The invention relates to a structure including a cleat connector for providing an electrical connection between an insulated wire and a bifurcated terminal element of electrically conductive resilient material. The terminal element includes a pair of leaf-spring contact arms lying in a plane and defined by a centrally located slot therein having sharp edges and adjoining an enlarged entry opening. The width of the slot is less than the diameter of the metallic conductor of the wire so that when the wire is pressed into the slot, the wire insulation is cut through, and an electrical connection is established between the wire conductor and the terminal element. A clamping element is associated with the terminal element for gripping the insulated wire.

Abstract: A linear electron beam evaporation source for a high vapor temperature material such as uranium, the source being provided with a filamentary emitter and apparatus for controlling the filament electron emission to maintain an approximately constant current per filament unit length. A control structure is provided and operated to create a space charge in the vicinity of the electron emitting filament such that the current density of the electron beam is controlled by the space charge rather than the local electron emissivity along the length of the filament.

Abstract: A conveyor belt comprising a plurality of like modules each module including a plurality of links having an upper conveying surface and providing axial passageways into which the teeth of a conveyor comb extend. A plurality of dogs are integrally formed with the links of each module upwardly extending above the conveying surface and disposed along a transverse axis of the modules.