Abstract: A power plant in which a turbine is driven by the combustion products of hydrocarbon fuel, air under superatomspheric pressure, and the exhaust gases of an internal combustion engine. Air is supplied by a compressor which is driven by the turbine.

Abstract: One or more of the aft stages of the fan section of a gas turbine engine are rotated by the high pressure turbine of a gas generator and the remainder of the fan stages are rotated by a low pressure turbine downstream of the gas generator. This arrangement divides the fan work between the low and high pressure turbines to permit more efficient utilization of the total available turbine capacity, reduction in low pressure turbine workload, increased aft fan stage pressure ratio capability and greater flow and pressure ratio modulation potential for a split fan engine. The invention has a wide range of application for various turbofan configurations including separated and/or mixed flow turbofan engines with separated or close coupled fan sections.

Abstract: The invention relates to improved jack-pump devices comprising a pump with a sliding piston forming first and second pump chambers, one on each side, a jack with a sliding piston forming first and second jack-chambers, one on each side, a first valve between the pump chambers, acting unidirectionally from the second to the first pump chambers, a second valve between the first chambers of the pump and the jack, and a communication device between the second chambers of the pump and the jack, the pump and jack pistons being slidably mounted and axially aligned in the same body filled with fluid, a fixed transverse partition disposed in the cylinder body between the two pistons, and a plunger for compensating variations of volume, slidably mounted in one of the two second chambers, close to the corresponding extremity of the body.The main application is as a lifting device for regulating the height of members or parts of moving machines, of seats for chairs, vehicles, building stays, etc.

Abstract: A hydraulic load-sensing system including a pump, a valve, a load-responsive actuator, and a hydraulic pressure unloading valve, all hydraulically connected together. The outlet of the pump is directed to both valves, and a sensing port and hydraulic line exist between the two valves for communicating the hydraulic load pressure to the unloading valve and thereby establishing the pump outlet pressure. A biasing member is included in the unloading valve, and therefore a constant hydraulic pressure drop is established across the valve supplying fluid to the load-responsive actuator, and a pressure relief valve limits the outlet pressure of the pump.

Abstract: A power device or mechanism embodying cyclic compression and expansion of compressible fluids, such as various gases, in a unique manner hereinafter referred to as the "Zachery" cycle. The power device, as disclosed, includes a chamber, such as a cylinder, and movable components, such as opposed pistons, associated with the chamber for varying the volume of the chamber and varying the pressure of gases therein with the movable components being mechanically connected to crankshafts or other mechanisms to enable the highest pressures obtained during the compression-expansion cycle to occur at or near the maximum lever arm of a crankshaft or other mechanism thereby generating the maximum torque possible from the gas pressure available. The power device also exerts its maximum force when the pressure within the chamber is at a maximum.

Abstract: This invention relates to apparatus for the conversion of thermal energy into mechanical motion. Transducers, such as nickel-titanium alloys, are employed which change their configuration and pliancy upon the application of stimulus such as heat. In the absence of a suitable stimulus, they are pliant and easily flexed. However, when stimulated they tend to assume a predeterminable configuration and then become rigid. Apparatus utilizing these phenomena convert the energy of physical transformation into useful mechanical work.Several embodiments are described. In one, the transducer is belt shaped and drivingly connected to several pulleys. Heat stimulus is applied to the belt locally adjacent at least one of the pulleys. The resultant straightening forces, inherent in an alloy such as nickel-titanium, cause rotation of the belt and hence the pulleys. In another embodiment, the transducers are opposingly connected to a swinging member so as to produce reciprocating motion when selectively stimulated.

Abstract: Turbocharged engine air supply cooling arrangement and method that utilizes an air-to-air heat exchanger provided with a fan to circulate ambient air about the heat exchanger to cool turbocharger compressor discharge air. The air is cooled to near, but above, the temperature of the ambient air as it passes through the heat exchanger. The air is then conveyed through a turbine which is mechanically connected to rotate the fan in response to the energy of expansion of the air. As the air expands through the turbine, it is cooled to a lower temperature, even below that of the ambient air before delivery to the engine.

Abstract: A system is disclosed for converting solar radiation into electricity and for storing energy generated in excess of demand. The system includes a large circular collector fabricated from modular elements. The collector is combined with a concentrator and boiler for producing steam. The steam produced is used to drive an electrical generator and a hydraulic pump. When system demand is less than the capacity of the generator, the excess energy is used to drive the pump. The pump transports water from a low level reservoir to an elevated reservoir, thereby storing potential energy. Later, when demand increases, water from the elevated reservoir is used to drive a second electrical generator. The circular collector is mounted on tracking apparatus which automatically aims the collector to focus on the sun and receive maximum solar radiation on its surface.

Abstract: A partially buried facility for the storage of petroleum products includes a liquid-tight equalization basin for containing water and an enclosure of at least partially dry terrain surrounding the basin, the enclosure being supported on a layer of impermeable terrain. In addition, a flat bottomed storage tank with a liquid-tight lining is located inside the enclosure and at least one lateral equalization well interrupts the bottom of the tank and penetrates the layer of impermeable terrain below. A liquid-tight pipe connects the equalization well with the equalization basin thereby enabling the equalization water to be maintained at a constant level.

Abstract: A rib expander, for use with tunnelling apparatus, in which a plurality of arcuate segmental members form a ring, at least two of the members being separable longitudinally to expand the ring. The ring is mounted to provide pivotal movement about a vertical circumferential axis of the ring as well as transverse movement in the plane of the ring and movement along the normal axis of the ring.

Abstract: In a composite arch structure of the type comprising an arched liner with compacted fill material or dense soil thereagainst to form a soil arch thereabout, means and a method to permit controlled settling of the liner so as to achieve load relief on the liner and a soil arch with improved load supporting capabilities. A foundation is provided for the liner comprising yielding footer means. The yielding of the footer means is controlled so that the liner settles at a desired rate relative to the adjacent compacted and consolidated fill material when a predetermined load on the liner is exceeded.

Abstract: This invention concerns a mine roof support of the kind comprising a floor beam, a roof engaging canopy and a plurality of extendible struts such as hydraulic jacks supporting the canopy from the floor beam. The invention comprises the provision of a flap pivotally connected along one edge of the canopy such that outward pivotal movement thereof may cause it to engage the canopy of an adjacent support. Hydraulic jack or equivalent means are provided acting between the canopy and the flap to urge the flap outwardly. The flap provides effective sealing of the gap between adjacent canopies in a line of roof supports and also enables each canopy to be positioned accurately between adjacent supports during advancing movement of the support.

Abstract: A tethered underwater work system comprises a primary lift module attached o a support vehicle by means of a primary tether. A submarine work vehicle is removably attached to said primary lift module and connected thereto by means of a secondary tether. Additionally, the lift module contains electrical distribution systems to permit an extensive control and instrumentation linkage with the submarine work vehicle and remotely controlled manipulators mounted thereon.

Abstract: A cooling system for air conditioning of buildings which comprises creating a cold medium by dissolving a salt in water, said salt being characterized by forming an endothermic solution, passing air through or over said cold solution to cool the air before introduction into said building, after the potential cooling effect is exhausted the salt is recovered by evaporation of the water from the solution with hot air, said hot air being at least partly heated by solar energy.

Abstract: A heat pump which is based on the principle of the Stirling engine and in which the pistons are replaced by flexible metal bellows. The pumping chamber is embraced by a regenerator of corrugated metal ribbon construction and enclosed in a pressure-tight vessel.

Abstract: A means for transporting natural gas which eliminates the need for ultra low temperature refrigeration units. The method comprises saturating natural gas at its source with certain hydrocarbon additives which liquefy at substantially higher temperatures than natural gas alone, liquefying the saturated mixture for fuel transport, transporting the mixture to its destination for usage, and adding sufficient air to the mixture prior to combustion to provide a fuel of a normal Btu capacity.

Abstract: A system for filling small refrigerant containers from a larger container in which the refrigerant is passed downward through a cylinder which is cooled by a refrigeration coil placed in the cylinder, the coil effecting a lower temperature at the bottom of the cylinder than at the top of the cylinder.

Abstract: Air conditioning systems particularly suitable for large buildings located where water is not available for evaporative cooling to provide a heat sink. The condensate from the conditioned air is collected at the cooling and dehumidifying coils and is used as make-up water for one or more evaporative cooling towers which act as the heat sink. One of the cooling towers provides cooling solely by conduction with outside air. Air is exhausted from the conditioned space through one of the cooling towers so as to utilize the evaporation of the condensate in the low temperature and low relative humidity air. The invention also provides for improved operation and efficiency in systems without regard to utilizing condensate for evaporative cooling.

Abstract: The invention substantially increases the maximum break angle of the joint without increasing its overall size. This is achieved in taking advantage of the planetary movement of the shaft carrying the tripod and the rollers and providing in the free inner edge of the bell recesses the minimum depth of which recesses is calculated in accordance with the amplitude of the aforementioned planetary movement.

Abstract: Knitted underwear, such as panties, panty hose, leotard and the like formed with a terry patch simultaneously knitted with the fabric at the crotch or other areas. The garment is made on a circular seamless hosiery knitting machine. The resulting tube is tailored for the leg openings, then sewn to form the garment. Shaping of the terry patch is effected by using the usual needle selecting device, normally employed for heel patch reinforcement and modified with suitable cams. The machine is modified to use new dial elements, a new throat plate and a new manner of feeding the loop forming yarn and the base yarn above and below the plane of the dial elements respectively. The machine is operated in a new way and can also produce knitted fabric with eyelet pattern.

Abstract: A knitted undergarment as formed from a knitted blank made entirely by rotary knitting upon a circle of needles of a circular knitting machine by first knitting a seamless tubular elastic waist encircling turned welt upon all of the needles, then knitting a seamless tubular body section in continuation of the welt upon all of the needles, and then knitting spaced seamless nontubular front and rear narrowed panels in continuation of correspondingly spaced portions of the body section upon correspondingly spaced groups of the needles, the yarn being introduced to the needles for the knitting of each course of the panels and being cut and clamped after the knitting of each such course, so that each course of the narrowed panels is knit of a separate length of yarn. The knitted undergarment is completed by joining the terminal end portions of the panels. The narrowed edges of the spaced panels then delineate spaced leg openings therebetween.

Abstract: Improved method and apparatus for of making a profiled body of at least one band of material which is profiled by a series of successive forming steps by means of pairs of rotating forming tools. At least one directrix is determined on the band for some of the forming steps coinciding with a marked longitudinal edge of the body and subdividing the band into a first and second band area. Swinging the first area about the directrix in a first direction and simultaneously swinging the second area about the directrix in opposite direction to said first direction in order to reduce tensile stress in one of the exterior edges of the bands at the cost of increasement of tensile stress in the other exterior edge.

Abstract: A rod repair splice having a pair of trough shaped bodies each with a rod embracing arcuate flange at one end thereof. The bodies are diametrically mounted on the rod to be repaired with the respective arcuate flanges thereof disposed at longitudinally opposite ends of the splice. Each of the bodies is welded along their opposite longitudinal side edges to the peripheral surface of the rod sections. Each axial end portion of the bodies includes three distinct camming surfaces which slope from the inner surface of the body adjacent to the rod to be spliced to the outer surface of the body. The sloping surfaces thereby avoid shoulders which might cause hangup upon axial movement of the repaired rod by camming an axial interference in a radially outward direction out of axial contact with the splice.

Abstract: The hydraulic actuated power tool includes a barrel having an internal, annular bulkhead separating the barrel into two cylinder chambers. A single piston shaft having two pistons thereon operates within the cylinders of the barrel. One of the pistons is located intermediate the shaft ends and the other is positioned at the terminal end of the piston rod. This latter piston serves as the back wall for the rear cylinder chamber. The piston shaft is ported so that in the power stroke both pistons are being urged rearward, whereas in the return stroke only the forward piston is being acted upon. The porting includes a transverse port extending across the piston shaft and a longitudinal port connecting midway of the transverse port and extending along the piston shaft and terminating in a bifurcated passageway which extends through the forward piston. A floating front wall makes up the end wall of the forward cylinder.

Abstract: A ballistic simulation system including means to shape the deceleration pe by varying the rate of energy transfer in the system, including a shaped crush-surface on the mitigator and a momentum-exchange member having an elastic portion.

Abstract: A piezooptical measuring transducer comprises two light sources connected to a square-pulse generator so that the luminous fluxes of each light source pass alternately through a polarizer common for both fluxes, phase-shifting plates individual for each flux, an elastic element common for both fluxes, sensitive to variations of mechanical stresses therein caused by changes in the measurand, an analyzer common for both fluxes, all placed in that order downstream of the light sources across the fluxes, the latter being alternately incident upon a photocell. The phase-shifting plates are oriented so that their axes of maximum velocity of light propagation are perpendicular to each other.

Abstract: An annular seal for engaging a tubular member. The seal includes an annular elastomer body having inner and outer surfaces and an interlocking reinforcing means associated with the inner surface of the elastomer body. The reinforcing means includes a plurality of segments and at least some of the segments have an arcuate flange secured thereto between the segment and the inner surface of the annular elastomer body, such arcuate flange extending into the annular space formed between the inner surface of the elastomer body and the outer surface of an adjacent segment.

Abstract: An ultrasonic sound beam is caused to penetrate an object to be inspected and is moved in a scanning plane of the object transversely to the axis of the beam. A B-scan display of the object is displayed on a display screen in response to echo pulses produced by the object under the action of the sound beam moving in the plane. An adjustable trace is defined on the display screen at a location which corresponds to a predetermined position of the sound beam during the movement thereof in the plane. A display other than the B-scan display is derived from echo pulses produced by said object under the action of said sound beam when the same is in said predetermined position.

Abstract: A sonic interference suppressor has a wiper of flexible material for wiping loose foreign material and excess water from a weld during ultrasonic inspection of the weld. A thin film of water between the contour conforming wiper and the weld passes unwanted ultrasonic energy into the wiper and on into foamed backing material.

Abstract: A system for on-site, non-destructive examination of the seam welds or other portions of the walls of a vessel, for example, a nuclear reactor pressure vessel, including an instrument carrying, remotely controlled vehicle with magnetic adherence means which may be selectively propelled to any position on the walls of the vessel and including an ultrasonic signal system utilizing a triangulation technique for remotely indicating the position of the vehicle on the vessel.

Abstract: An accelerometer senses a machine's vibration resulting from unbalance of its internal rotors and outputs an electrical signal which is then conditioned by means of an amplifier and uniform level filter. The resulting output signal has individual vibration (frequency) components which are adjusted to match the machine's specified vibration limit extending over each of the rotors' frequency range to achieve a uniform level. A storage oscilloscope is employed to display the conditioned signal.By utilizing the uniform level filter a normal operating band for the machine can be specified in terms of oscilloscope divisions regardless of the machine's operating frequencies. When a signal exceeds the specified band on the oscilloscope the rotor causing the excessive vibration may then be determined by analyzing the individual components. Utilizing relatively uncomplicated electronics, a limit exceedance warning may also be incorporated.

Abstract: A mass and force meter having a frame, a load support and a digital computing device, a first and a second electrically excited, transversely vibrating string, first transmission elements transmitting the mass or force to be measured to said strings, second transmission elements transmitting a pre-loading force to said strings, so that the resultant frequency variations caused by the application of said mass or force are used in the computing and display device for computation of the magnitude of said mass or force, said first transmission elements having a first and a second branch, a first guide fixed to the frame, said first string having one end fastened to said frame and the other end connected to one end of said second string, to said first guide and to said first branch of said first transmission elements, a second guide fixed to the frame, the other end of said second string being connected to said second guide, to said second transmission elements and to said second branch of said first transmission

Abstract: A torque wrench is disclosed which may be utilized in conventional or overhead applications without need for the operator to assume awkward positions to read the torque output. An adjustable mirror arrangement with a unique dial face allows the operator to constantly view the torque readout in erect numerals while in the most convenient torque applying position.

Abstract: An apparatus for measuring the stiffness characteristic of structural adhesives which encompasses a critically patterned series of sensor points which enables the recording of minute movements of a bonded specimen to which force is applied with exacting precision.

Abstract: An apparatus for measuring the stiffness characteristic of structural adhesives which encompasses a critically patterned series of sensor points which functions cooperatively with a novel mounting mechanism to enable the recording of minute movements of a bonded specimen to which force is applied with exacting precision.

Abstract: A pressure measurement system particularly suited to use in boreholes uses a pressure source at the surface to supply a test fluid through a small tube to a large downhole chamber having a fluid port on its bottom side. The test fluid displaces borehole fluid from the chamber after which the pressure of the test fluid is measured at the surface, thereby indicating the pressure of the borehole fluid.

Abstract: Measuring device for beverage-tapping apparatus having a feed line from a supply source to a measuring chamber, a volume measuring device with a meter connected thereto, and a valve outlet behind the measuring chamber with a valve, comprising primary element means positioned within the measuring chamber which can distinguish foam from compact liquid, switch means controlled by the primary element means with which the measuring device can be separated from the meter.

Abstract: When measuring the velocity of fluid flow by measuring the voltage produced by magnetic induction applied to the fluid, measurement is affected by the electrochemical potential developed at the electrodes. This may be compensated by storing the total signal produced with a first value of the induction and subtracting this stored signal from the total signal produced at a second value of the induction so that the electrochemical potential cancels out.

Abstract: A system for measuring the mass flow of a fluid stream wherein gas is interspersed with liquid, the system providing separate mass flow readings for the gas and liquid. The system includes a mass flow vortex-type meter having a flow tube through which the stream is conducted, the meter producing an output signal whose frequency is indicative of volumetric flow and whose amplitude is indicative of mass flow. This output signal is routed either to a liquid-mass flow indicator or to a gas-mass flow indicator by a switch responsive to a density signal whose magnitude depends on the density of the fluid passing through the meter, such that when the stream is in liquid form the output signal is applied to the liquid indicator, and when in gas form to the gas indicator.

Abstract: A correction mechanism for supplying an altimeter indicator with a rotational torque to compensate for the non-linear relationship between pressure altitude and barometric pressure. The correction mechanism has a first gear for receiving an input force and a second gear connected to the first gear. The second gear is eccentrically located on a shaft which connects a third gear with the altitude indicator. Because of the eccentricity of the second gear the line of action between the second gear and the first gear causes the shaft to rotate the third gear through a varying arcuate length for each tooth engagement.

Abstract: A helical open ended tube is rotated so as to pass an open end successively through two different fluid media. Successive slugs, first one and then the other, of the media are captured, screwed along the length of the tube and retained therein for subsequent analysis.

Abstract: An adapter unit, or apparatus for the receipt and containment of a fluid specimen sample under sub-atmospheric or supra-atmospheric pressure. The device is useful in facilitating the transfer of the fluid specimen to a fluid injector device, or needle syringe. In one form, the device is comprised of a valved, closed container the wall of which is fitted with oppositely disposed tubular seals within which is contained a reciprocable plunger. In another form, the device is constituted as an adapter unit which can be adjoined with a valved container for taking a sample therefrom, and subsequently separated therefrom, as desired. In either form, a yoke-like member or C-shaped frame is provided as an overall and necessary part of the combination. One end of the C-shaped frame is secured to a side of the reciprocable plunger, and the other end thereof is provided with a guide or holder.

Abstract: A sampler for taking a sample of molten metal from any source of molten metal includes a mold having a mold cavity with a fill passage and a flow diverter located within the mold cavity which causes turbulent flow of the molten metal as it enters the mold cavity to provide good mixing of the deoxidant and eliminate structural voids in the sample. In one embodiment, a pin sample tube has its inner end located in the path of flow from the fill passage to cause disruption of the normal flow patterns and provide the desired uniform sample.

Abstract: Apparatus for generating an electrical signal indicative of the level of a liquid stored in a reservoir. The apparatus includes first and second probes spaced from one another and extending into the reservoir. Each of the probes includes a metal electrode surrounded by a preferably dielectric material. The liquid to be measured contacts the dielectric material, but does not directly contact the electrodes. A preferably alternating voltage is applied across the electrodes and the impedance therebetween is sensed. The impedance between the electrodes varies as a function of the level of the liquid in the reservoir and this impedance is substantially greater than the impedance between the probe areas of contact with the liquid. In effect, the liquid is treated as a conductor because its impedance is negligible as compared to the impedance between the probe electrodes, this impedance varying as a function of liquid level.

Abstract: A portable bubble balancer incorporates a wheel support and pivot assembly which is spring biased in an upward direction into an interlocked position with the base of the balancer to prevent pivoting of the wheel support in the absence of a wheel thereon.

Abstract: An interconnecting member which operatively connects a pushbutton slide with either one of a pair of tuning slides comprises a flat body portion which has its one end pivotally connected with the pushbutton slide. At its other end, the body portion is provided with means for mechanically engaging with one of the pair of tuning slides selectively. The body portion is also provided, at said other end, with means for engaging with shift means which shifts the interconnecting member from one operational position to the other operational position. The interconnecting member moves angularly across the surface of the pushbutton slide in response to an operation of the shift means.

Abstract: The overdrive device interconnects between the output shaft of the transmission and the drive shaft of an automobile or other motor vehicle. The device is continually operable as long as the transmission is in its drive mode and the device is of the planetary gear type.

Abstract: Variable pulley for a drive acting through a tension medium strand includes two pulley parts, at least one of which is displaceable in axial direction relative to the other, each of the pulley parts having a running surface for a tension medium strand, at least one of the pulley parts being mounted on a shaft-like member, at least two systems having means mutually connecting the pulley parts to one another, the at least two systems being axially spaced from one another and affording axial displacement of the at least one pulley part, the systems, on the one hand, being firmly linked to the at least one pulley part and, on the other hand, having means for linking the systems to a part of a drive which is to act through a tension medium strand, the systems being synchronously and concentrically rotatable with the part of the drive.

Abstract: An improved drive belting comprises a woven tape constraining element embedded in a polyurethane body element. The warp threads of the woven tape constraining element have a higher modulus of elasticity than the polyurethane body element, are resistant to heat shrinkage and extend substantially through the length of the polyurethane body element to resist extension of the polyurethane body element. At least the warp threads of the woven tape are preferably composed of rayon, although the weft threads may be nylon. The polyurethane has good frictional properties and is extremely wear resistant making it particularly suitable for driving belts.

Abstract: A power transmission drive comprising driving and driven sprockets interconnected by a chain consisting of interlaced ranks of links having projecting toes to engage the tooth gaps of said sprockets and articulated by two-part pivots disposed transversely through aligned apertures in the links, the cross-section of each pivot part having generally the shape of a three-lobed convex hypotrochoid and the said apertures having generally the shape of a longitudinal section through a chicken egg.