Abstract: A collapsible, articulated structural section which is movable between a stable erect configuration and a collapsed configuration includes a manually actuable positive lock for locking the device in its erect configuration. Four pairs of scissored links connected to exterior pivots at their ends form the exterior of the section, and the interior is formed by a pair of face pivots and four pairs of crossed, but unconnected, face links, each pivotally connected at one end thereof to an exterior pivot and at the other end thereof to a face pivot. A through-extending opening is provided in one face pivot, and a locking component including a shaft portion insertable into the opening, and a rotatable locking member mounted on the end of the shaft, are mounted on the other face pivot.

Abstract: A door and window apparatus includes a pair of longitudinal frames, a pair of transverse frames, two glass sheets respectively disposed among the longitudinal and transverse frames defining a vacuum chamber for minimizing sound-wave transmission and preventing noise pollution, and a reinforcing grating intermediately fixed in between the two glass sheets serving as an internal barrier to exclude any intruder through the door or window for security purpose.

Abstract: A panel for a raised floor of a clean room, such as for a semiconductor manufacturing facility, comprises tubes (2) whose open ends (3) are slipped over respective spacers (4) of spacer bars (5), providing cross-connection and support for said tubes (2). No welding or adhesives are needed. The size of the panel can be conveniently changed or adapted in the plant or in the field.

Abstract: A spiral staircase having a central wooden center column which includes slots spirally located around the center column. Each of the slots includes a steel support bracket which consists of a base plate and a pair of support arms extending from the base plate. Each of the support arms includes a pair of support pins extending from opposite faces of the support arms. Each of the stair treads and risers are provided with a steel pin engaging hook assembly which is attached to the inner end of the tread riser. The engaging member is provided with four downwardly disposed hook members each of which engages one of the pins mounted on the support arms. The stair treads and risers are supported in cantilever fashion by means of the hooks engaging the respective pins.

Abstract: A synthetic material structural body panel is provided which comprises synthetic material suitable for use as structural body panel, for example, as a package tray in an automotive vehicular structural body, wherein an aperture extends through the synthetic material panel, and further comprising a metal attachment plate fixedly engaging the synthetic material and spanning the aperture. The invention further provides a method of making a structural body comprising a synthetic material structural body panel according to the invention. The invention further provides a joint between a synthetic material structural body panel of the invention and another structural body panel, which joint comprises a metal attachment plate as described above, and means such as spot welding, riviting, etc. securing the metal attachment plate to the other structural body panel.

Abstract: A metallic frame fire-stop is set forth formed of planar-like reinforced rib construction including necked-down terminal end portions with integral interlock elements for twist-fit locking engagement with typical metallic studding, as commonly utilized in commercial construction. The width of the fire-stop members are dimensioned to equal those of metallic studding with the neck-down terminal end portions dimensioned to nest within the metallic studding's vertical legs. The so formed fire-stop accordingly require no accessory fastening elements for securement to the aforenoted studding.

Abstract: A wale clamp includes a main body having vertical and horizontal walls. A pivotable handle with a cam on its lower end is connected to the vertical wall and selectively clamps a wale. A removable and adjustable bracket is connected to the horizontal wall of the clamp, and is adjustable to hold varying widths of wales.

Abstract: A composite structure is disclosed which is especially useful as a sidewall for trailers. The structure, however, because it is very strong can be used for end walls, roofs or floors and even prefabricated housing. The composite structure provides all the advantages of wood framing and aluminum framing and has good raking characteristics. A method of producing the structure is also disclosed which can be used in a production line assembly operation.

Abstract: An insulation structure for a heat chamber, e.g., a wall or ceiling for a furnace, is now supported and linked to a frame in a manner providing for ease of repair plus simplicity of maintenance. In one embodiment a series of side-by-side ceramic fiber blankets can be maintained in snug relationship, in part by adjustable compression means. Heat loss, which can otherwise be caused by heat induced ceramic fiber shrinkage, is now substantially reduced to eliminated by the manner of supporting the insulation structure coupled with the compression exerted against such structure.

Abstract: A subpurlin (100) is provided for use in constructing an insulated wall assembly having a plurality of horizontal support members (104) and wall panels (102). The subpurlin (100) is provided with a first cell rib area (110) and a second cell rib area (112) and interconnecting spanner sections (28) to provide insulation space (116) between the wall support members (104) and the subpurlin.

Abstract: In a frame-shaped window member (1 or 2) including a framed core (10) made from wood material and provided with a covering (11) moulded thereon, preferably polyurethane, and supporting on its side facing the open air a weather-resisting shield (12), the part (11') of the covering facing the inside air has a far larger thickness and thus a corresponding minor permeability to vapor than the adjacent covering parts (11") which fully or partly cover the remainder of the surface of the core.

Abstract: A horizontally extending reinforcing bar having a central core in transverse cross-section exhibiting at least three radial fins projecting outwardly symmetrically from the center of the bar to its outer edge. Each pair of adjacent fins define a valley between them containing a pattern of raised surface area. Two in-line reinforcing bars are held together by a coupling device having a housing with multiple flexible inwardly projecting plates from grooves in an inner wall. The plates flex in the direction of insertion of a reinforcing bar and exert a force to prevent removal of the bar.

Abstract: A pair of panel sheets form a sandwich with an undulated ribbon-like spacer in the interior thereof and marginal spacers about the periphery of the sheets. A vacuum within the space between the marginal spacers insulates and rigidifies the assembly.

Abstract: Apparatus for interlocking a pair of panels which may constitute the end portions of a wrap around carton blank, one of the panels having an edge strip with at least one locking aperture therein and which is foldably joined to an edge of the associated panel, the other panel being formed integrally with the body portion of a locking tab and an anchoring tab being foldably joined to the body portion of the locking tab, the apparatus including an elongated locking beam having a longitudinal locking groove formed in the lower surface thereof, means for moving a carton and its end panels along the beam and with the panels adjacent the groove, a rotatable strip folder arranged to engage and fold the strip into the locking groove so as to move its aperture out of the plane of the associated panel, a rotatable tab folder arranged to engage and fold the anchoring tab out of the plane of the body portion of the locking element, an abutment disposed in the locking groove downstream from the strip folder and tab folder

Abstract: An apparatus for packaging an item in a controlled atmosphere enclosure is provided. The apparatus includes a conveyor for continuously conveying a series of containers along a defined path. The path has sequentially oriented first and second portions, and defines a first side border and an opposite second side border. The apparatus introduces a covering material over the path of containers such that a space is created between the containers and the moving covering material. A vacuum gallery is disposed substantially adjacent the first border for applying a vacuum to the space only in the first portion of the path. A gas gallery is disposed substantially adjacent the second border for continuously introducing a selected gas into the space in both the first portion and the second portion of the path.

Abstract: A method and apparatus for filling a bag with packs of produce or articles, in which the bag is suspended from a bag clamp and flattened by pairs of opposing lowering plates at spaced intervals down the bag. The packs are assembled in a batch of two or more packs on a platform formed by hinged plates which are swung downwards to deposit each batch in turn in the bag. The packs are supported initially on the wall of the bag covering the uppermost lowering plates, and the pairs of lowering plates are swung downwards in sequence to allow the packs to drop in stages within the bag. The filled bag is released from the bag clamp onto a conveyor which transports the filled bag to a closure device. The wall of the filled bag is supported by a suction head during movement along the conveyor to the closure device.

Abstract: A leg net assembly for use in keeping biting insects and dirt away from lower leg portions of horses is disclosed. Each leg net includes a central mesh or net body portion which is provided with upper and lower knit supporting and retaining members. The mesh or net body portion is bloused or ballooned so that it stands off the animal's leg and allows for fresh air circulation. Any biting insects landing on the body of the leg net assembly cannot contact the animal's skin.

Abstract: Three versions of a gear box for a combine corn head are illustrated. The gearing to drive a pair of snapping roll shafts and a pair of gathering chain drive shafts are housed in two casings releasably secured to one another in an end-to-end relationship.

Abstract: A leaf receptacle bag is affixed to a vertically disposed support surface that has means for adapting to a leaf conduit. The leaf conduit conveys leaves from a tractor vacuum unit through an orifice in the vertically disposed support surface, the adapter of the conduit directing the leaves diagonally across the interior of the leaf receptacle bag to thereby deposit the leaves at the lower portion of the bag.

Abstract: The rake of this invention has an "S" shaped angled handle allowing a person to rake in a forward sweeping motion. Two rows of teeth facing in an opposite direction from one another are necessary so one can use the raking device from the left or right on one's self.

Abstract: In open-end rotor spinning, imparting lesser false twist to the yarn being formed as it revolves through the yarn receiving zone and greater false twist as it revolves away from the zone. This is accomplished by different frictional resistance surface characteristics on the surface of a navel, or by shaping the surface for lesser extent of yarn contact in one surface portion and greater extent of yarn contact in another surface portion.

Abstract: The invention relates to fluid outlet ducts particularly cooling air outlet ducts of a gas turbine engine. A fluid outlet duct for a gas turbine engine is divided across its width into a plurality of second plenum chambers, each of the second plenum chambers has an associated exit nozzle located in the casing of the gas turbine engine for discharging cooling air. The cooling air from a heat exchanger is supplied through a first plenum chamber to each of the second plenum chambers. Each of the second plenum chambers has a valve to vary the flow of cooling into the second plenum chambers so that the total flow area of the fluid outlet duct may be varied to obtain relatively high exit velocities for the cooling air to give good thrust recovery.

Abstract: A convertible aircraft engine, capable of turboshaft and/or turbofan modes of operation, is provided in a configuration that combines certain components to permit variation in bypass flow to match engine airflows with the mode of engine operation. The provided components permit the engine to decrease the power requirements of the engine's forward fan when the engine is operated in the turboshaft mode. To permit a decrease in fan power requirements, the fan is split into an outer portion and an inner portion separated by a rotating shroud. Airflow into the fan's outer portion is controlled with a part span inlet guide vane and an outlet guide vane. The guide vanes can be used to lessen the load on the outer portion of the fan while the inner portion continues to accelerate and compress a normal airflow into an engine compressor for supplying the engine's core. The power normally used to drive the fan outer portion is used instead to power a transfer shaft in the turboshaft mode.

Abstract: A gas turbine having internal cooling and method of operating the same includes the bypassing of a portion of the cool air from the compressor section into the turbine section along the suction side of the turbine blades while maintaining stable flow conditions in which there is relatively low intermixing between the cool airflow on the suction side and the hot gases on the pressure side.

Abstract: Filtering apparatus for removing combustible particles from a gas, e.g. carbon and hydrocarbon particles from the exhaust gases of a diesel engine, comprises at least one filter element which is made of fibrous material and is electrically conductive. To remove trapped particles from the filter element and thereby regenerate the filter element, electrical power is supplied to the filter element to heat it to the point at which the carbon and hydrocarbon particles combust. One or a plurality of such filter elements may be provided in a housing in the exhaust gas system of a diesel engine with the filter elements exposed in parallel to exhaust gases. For regeneration, all filter elements may be simultaneously regenerated while exhaust gases are either exhausted direct to the air or through a similar filtering apparatus. Alternatively the filter elements may be regenerated sequentially so that at least some of the filter elements are always effective as filters.

Abstract: A free-piston motor with hydraulic or pneumatic energy transmission comprising at least one free-piston unit designed for intermittent operation using always the same optimal cycle comprising a compression and an expansion stroke and consisting of a cylinder (88) with at least one free piston (89) which is slidable to-and-fro therein, said piston (89) being connected to a member (90) of general plunger-like shape which is adapted to slide to-and-fro inside at least one stationarily mounted chamber member (95) and which delimits within said chamber member a first or plunger chamber (93) which is in communication with a source of pressurized fluid (103) through an operable valve member (82,83), a second or displacement chamber (96) which is in communication via a nonreturn valve (99) with a reservoir (100) and is connected via a second nonreturn valve (102) to an accumulator (103), and a third or buffer chamber (97) which is in open communication with said accumulator (103).

Abstract: An internal combustion engine having a cylinder, a piston reciprocally movable in the cylinder, the cylinder and piston defining in part a chamber for combustion, intake means for introducing air into the cylinder at predetermined intervals, exhaust means for removing combustion gases from the cylinder at predetermined intervals, and a regenerator liner in at least a part of the chamber, the liner having a structure with surfaces defining a plurality of regenerative cells constructed to cyclically admit, hold and discharge compressed air from the cylinder for thermally insulating the cylinder from the heat of combustion, the engine including a mechanism to maintain the piston displaced from the cylinder to avoid contact of the piston with the liner and including a positive displacement, rotary compressor-expander to precompress air delivered to the piston cylinder and receive combustion gases from the cylinder to drive the compressor-expander.

Abstract: A method for controlling the flow of a cooling medium such as helium into an insulated chamber surrounding a region to establish a stable thermal environment in the region over a wide range of cryogenic temperatures. A thermally insulated capsule surrounds a variable temperature capillary to precondition the helium before it flows into the insulated chamber. The capillary can be operated in different modes, depending upon the heating or lack of heating of the capillary. At low temperatures the capillary can pass the helium in its liquid phase, at high temperatures only a small amount of gaseous helium is passed, and at certain intermediate temperatures there is an ample flow of gaseous helium only.

Abstract: A discrete internal self-cooling device (106) installed in a standard beverage can (100) during assembly that operates, preferably, on the principle of heat loss through vaporization. A refrigerant vessel (112) is provided for holding a cryogenic refrigerant (114). The vessel includes a refrigerant vessel body (116) made up of cylindrical side walls with a cylinder vent hole (118) formed through it near the upper regrigerant vessel rim (120). The vessel sidewalls terminate in upper (122) and lower (128) plugs which seal the vessel. The upper plug (122) includes a regulated refrigerant escape rate means comprising a metering orifice (124) that extends through the plug axially. Intersecting this metering orifice, an automatic pressure actuated release means comprises a transverse plug cylinder (126) containing a pressure actuated piston (130) having a piston groove (134) that opens or closes the orifice, depending on its alignment with the orifice.

Abstract: Disclosed is an air-cooled absorption-type water cooling and heating apparatus, wherein, during a heating operation, the absorption heat generated when a condensed solution absorbs refrigerant vapor is imparted to circulated cold or hot water flowing through a first cold/hot water heat exchanger so as to convert the water into hot water, and condensation heat necessary for condensation of refrigerant vapor by a water heating device is supplied to circulated cold or hot water flowing through a second cold/hot water heat exchanger so as to convert said water into hot water for heating. At this time, since the refrigerant solution evaporates on an inner wall surface of a cylinder by absorbing the heat of the air, the heat obtained from the air is added to the heat obtained from the high-temperature regenerator, with the result that a heat pump effect can be obtained.

Abstract: A two-stage cryosorption pump has a first stage at a higher temperature and a second stage at a lower temperature. Sorption surfaces of reticulated vitreous carbon formed on the second stage have high rigidity and exceptionally high void volume.

Abstract: The present invention provides an ice making machine including an ice making water tank adapted to supply ice making water in circulation to an ice making section during the ice making cycle, a harvesting water tank adapted to supply harvesting water to the ice making section during the harvesting cycle, a compressor adapted to supply refrigerant gas to an evaporator tube of the ice making section, a float switch provided to the harvesting water tank and adapted to sense the upper water limit of the harvesting water, a water feed valve adapted to supply water to the harvesting water tank, and a control circuit having a relay for sensing that the machine is in the ice making cycle, the circuit being connected to the float switch and to the water feed valve for controlling the operation thereof. The water feed valve is open only when an AND output signal of the relay and the float switch is issued.

Abstract: A device for the offset control of the needle beds of a flat-bed knitting machine has a servomotor for the adjustment of one of the needle beds in relation to the other and has a position control circuit controlling the servomotor.

Abstract: A latch needle having an elongated spring element, one end thereof attached to the bottom of a recess in one portion of the slot, the other end of said spring element bearing on the extended end portion of the latch biasing the latch to a partially open position.

Abstract: A vehicle anti-theft device. The device is amenable for use with a vehicle having a gear lever. The device includes a removable housing which fits over and encloses the gear lever. The housing is locked in place to prevent movement of the gear lever by a bolt passing through the housing in interengagement with the gear lever and penetrating a barrel lock housing fixedly attached to the gear lever housing. The bolt has a head at one end which prevents rotation thereof, and a hole at the other end in mutual register with the bolt-engaging portion of the barrel lock. The locking of the housing in place over the gear lever prevents movement thereof so that the vehicle cannot be driven without unlocking the housing.

Abstract: An improved cold forging tool to exert radial forces outwardly to form a tubular member outwardly into an annular member which includes a central body having external recesses and external shoulders at each end, a resilient sleeve surrounding said central body and having its ends positioned within said external recesses, a passage through the central body to communicate between a pressure supply line connected to the end of the body and the interior of said resilient sleeve, and first and second dual segmented, expandable anti-extrusion ring positioned between the central expansion portion of said resilient sleeve and each of said shoulders, a resilient ring retaining each of said segmented rings in surrounding relationship to the ends of said resilient sleeve to prevent extrusion of the resilient sleeve during the forming of the tubular member and a shoulder on said body limiting the radial outward movement of the rings abutting the external body shoulders.

Abstract: Two downhole measurement-while-drilling tools, at least one of which is borehole sensitive, are used to make standard measurements of borehole conditions while drilling. From these measurements, and with some prior knowledge of the lithology, the caliber of the borehole is determined by iteration. The preferred tools are a neutron porosity and a density tool with lithology having been determined by prior seismic survey techniques.

Abstract: The apparatus has a hot roughing mill, a cold finish rolling mill arranged downstream of the hot roughing mill as viewed in the direction of flow of the material, and a slitting/annealing equipment arranged downstream of the finish rolling mill as viewed in the direction of flow of the material. The slitting/annealing equipment includes an uncoiler for uncoiling aluminum web which has been finish-rolled and coiled by the finish rolling mill, a multi-slitter adapted for slitting the uncoiled aluminum web into a plurality of aluminum strips, and an electromagnetic induction heating annealer through which the strips are made to pass so as to be annealed by electromagnetic induction heating.

Abstract: The structural steel rolling mill comprises a reversing two high rough rolling mill, at least one universal working rolling mill and at least one flanging edging rolling mill included in a reversing tandem rolling mill group, and a universal finishing rolling mill at the outlet end of the structural steel rolling mill. The reversing tandem group following the rough rolling mill has a universal working rolling mill, a flanging edging rolling mill and the universal finishing rolling mill. By including the universal finishing rolling mill in the reversing tandem rolling mill group the universal finishing rolling mill also participates in the reversing action and because of that is more effective in shaping than the standard finishing rolling mill so that in practice the special universal finishing rolling mill following the reversing tandem group is omitted as well as the edging rolling mill commonly provided with it and the roller bed located between them.

Abstract: A roll forming process is described wherein longitudinal areas of curvature are formed in strip material between longitudinal areas of narrower width, the areas of curvature being bowed downwardly from the center toward the longitudinal flat areas. As the strip material is fed progressively through roll forming stations, the longitudinal areas of curvature are formed into areas of lesser curvature and finally flattened to provide strip material having relative flat areas separated by substantially rectangular ribs. The process is one in which areas of curvature are provided to initially gather strip material for use in forming the sides of one or more ribs with little or no thinning of the strip material.

Abstract: Reversible fuel assembly grid tab repair tool having a tab bending member for remotely reforming fuel assembly grid tabs, wherein the tool has means for fine alignment of the tab bending member with the grid tab to be reformed. The grid tabs may be formed on the top and bottom edges of a grid strap which wraps a plurality of fuel rods disposed in the fuel assembly. The repair tool comprises a generally L-shaped frame having a vertical first leg and a horizontal second leg. Extending from the terminal end of the second leg is an alignment blade capable of being interposed between two fuel rods adjacent each side of the grid tab to be reformed. Attached to the top surface of the second leg at the terminus thereof is an anvil block having an anvil surface for bending the grid tab thereagainst when the grid tab is interposed between the anvil surface and the tab bending member.

Abstract: An installation for the repair and the checking of vehicle bodies includes a bench having a rectangular frame made of tubular elements, and a pulling tower the forward end of which is equipped with a coupling device for detachably securing the pulling tower to the bench, the rectangular frame having a flange extending inwardly of the frame along the inner bottom edge thereof, the pulling tower having a base portion adapted to be received beneath the frame and having a stirrup constructed and arranged to engage on the flange and a shoe member carried by an axially movable rod for movement into engagement with the external surface of the tubular element and cooperating with the stirrup and flange to lock the pulling tower to the bench.

Abstract: In a multi-stage forming machine, a die-change device, for male dies in a male-die block has a mounting plate for receiving a clamping face of the male-die block on one side. Bayonet fasteners on hollow pistons in the mounting plate then engage the male dies, and a pressure medium then moves the hollow pistons to move the male dies against thrust pieces displacably in the hollow pistons and the thrust pieces against an adjusting wedge on the opposite side of the mounting plate.

Abstract: A method and apparatus for testing cold gases for a hazardous gas by flowing the cold gas through a tubing positioined in a garment and then flowing the heated gas from the tubing into a suitable test apparatus.

Abstract: A method and device for testing for leaks in fuel tanks. The method requires a vacuum be drawn around the fuel tank while a test gas is injected into the tank. Any leaks in the tank will permit the test gas to be drawn into the vacuum chamber, the output of which is tested by a sensor sensitive to the test gas. The entire test is conducted assuring speed, accuracy and safety. The tank device contains a vacuum chamber which is molded directly upon the tank to be tested, thereby minimizing the size of the vacuum chamber. The device also contains a sealing system which is adjustable. An optional addition to the system is a method of localizing a leak that is detected.

Abstract: A system for detecting leaks in pasteurization plates and the like wherein the plate forms a chamber with a support surface and a gasket, a vacuum is formed in the chamber, and leaks in the plate detected by passing a gas through the plate and sensing the presence of said gas in the chamber.

Abstract: A novel apparatus for determining the relative hardness and abrasion resistance of industrial film coatings and linings is disclosed. In its preferred form, the apparatus comprises a rigid handle incorporating a pre-set angle between its flat lower surface and a flexible spring blade attached at one end to the handle, and a scoring stylus attached at the other end of the spring blade. By placing the bottom of the handle on the surface of the film coating or lining whose relative hardness and abrasion resistance is to be determined, the spring blade is caused to deflect and thereby exert a constant and predetermined force through the scoring stylus onto the film coating or lining. By drawing or pulling the handle across the surface of the film coating or lining while maintaining the lower surface of the handle in complete contact with the film coating or lining, the scoring stylus creates a scratch on the surface of the film coating or lining.

Abstract: For allocating to the respective cylinders cylinder-specific measured val taken from an internal combustion engine under test with the ignition suppressed the measured values are continuously numbered while the ignition is suppressed. After the suppression of the ignition has ceased the numbering is continued at least until the occurrence of the measured value from a cylinder determined by the ignition, after which, bearing in mind the known firing order of the engine, all the measured values can be allocated to the respective individual cylinders.

Abstract: A circuit arrangement to detect signals indicating a change in the current of a needle lift sensor of an injection nozzle in combustion engines, which is connected to a constant direct current supply.This circuit arrangement, which is intended to detect the signals indicating a change in current that are emitted by a needle lift sensor Z.sub.s of an injection nozzle in combustion engines that is connected to a direct current source, is designed in such a way that it will also detect minor signals indicating a change in current under the conditions prevailing in motor vehicles, which exhibit a high level of interference. For this purpose, the sensor (Z.sub.s) is connected to the controlled outlet (4) of a controlled direct current source (1) and a sensing resistor (R.sub.

Abstract: An apparatus and a method are provided for detecting and monitoring flow of a fluid through an injector, such as a fuel injector (10) of a diesel engine. Ultrasonic waves are detected by a transducer (12), and signals passed through a filter (20), so as to observe broadband signals of frequency above 100 kHz. Such signals are due to turbulent flow through the injector orifice (38), and so enable the flow itself to be detected.