Abstract: An evaporator feed and control system maintains a relatively high level of stability over a wide range of varying loads. The evaporator system includes a first evaporator having a multiple pass inlet and a single pass outlet, and a second evaporator having an inlet and an outlet. The inlet of the second evaporator is connected to the output of the first evaporator. A control valve device is utilized for bypassing at least a portion of refrigerant-oil flowing in the first evaporator from the second evaporator directly to a suction line when system is operating at a reduced capacity.

Abstract: A special unitary heat exchange unit for safely heating potable water from the waste heat of a number of refrigeration units is formed of a large diameter pipe perhaps 4 to 10 inches in diameter and perhaps 6 to 20 feet in length to extend along a refrigeration rack. The water to be heated is passed through the length of the heat exchanger, which is essentially a cylindrical tank enclosing a number of small double walled coils each constituting a heat exchanger through which freon or other similar refrigeration gas is passed for cooling. The double walled coils include the inner tube which carries freon, and an intermediate buffer zone in which a non-poisonous heat transfer liquid is located.

Abstract: Apparatus for storing and dispensing leafy vegetables, comprising a container having an aperture and a side wall therein; means for dispensing chilled water within said container above said aperture; and means for supporting leafy vegetables within the container below the water dispensing means and inclined toward the aperture. An additional feature is a shelf extending outwardly from the container adjacent the aperture and inclined toward the interior of the container.

Abstract: Arrangement in a freezing plant, comprising a combination of a conventional freezer and a precool unit. The arrangement is connected between the freezer and the precool unit in such a way that the amount of air in the freezing plant is maintained substantially constant without any reaction with the ambient atmosphere.

Abstract: Closet for the conservation of goods such as wine in bottles or other foodstuffs.The body 10 of the closet is refrigerated. Internally applying against the walls, 13, 14, 15 of the closet, is a U-shaped vat filled with an aqueous solution. This vat is open at its upper end.A serpentine evaporator 17 refrigerates the solution in the vat, without freezing it.The aqueous solution defines the coolest zones of the interior of the closet, ensures constancy of temperature in time, and controls the internal hygrometry.

Abstract: A device for carrying a removable pendant from a chain or necklace which has an aperture into which is inserted the top bar of a T-shaped member which carries the pendant. Means are provided for closure of the aperture by a movable element having a protuberance extending through said aperture, locking the pendant within the device.

Abstract: An improved flexible coupling for use in conjunction with a flexible high speed coupling shaft includes means for increasing the coupling axial stiffness while maintaining a high degree of alignment offset capability and the same overall shaft axial stiffness.

Abstract: A laundry additive dispenser for use with laundry appliances has a tiltable bin pivotally mounted for user access on a panel of the laundry appliance. The bin is divided into three sections which are exposed when the bin is tilted forward to a receiving position and may be filled with liquid or granular laundry additives. The bin is then tilted back to a dispensing position. The sections of the bin for dispensing liquid laundry additives each have a siphon therein. Solenoid operated valves selectively communicate each section with a water distribution path. When an appropriate valve is opened water flows in the proper section of the bin and when the water-additive solution reaches an appropriate level, siphoning action begins and the entire contents of the section is dispensed to a clothes treatment zone in the appliance. Each section is provided with an overflow tube to insure that the liquid level in the section does not reach a level so as to prevent the siphoning action.

Abstract: Blood identification means. A holder bag is adapted to hold a bag of blood. A coded lock is mounted in the holder bag, the lock being coded for a particular patient. A wrist band attached to the patient provides the code for the lock.

Abstract: A method for molding a bulge comprises a step of jetting a pressure fluid from a nozzle into a shaped blank fitted thereto thereby causing air trapped in the shaped blank to be agitated into air bubbles to allow the fluid pressure to be applied onto the inner surface of the shaped blank during discharging the liquid from within the blank.

Abstract: A cold sheet metal forming apparatus in which the forming rolls are held at each end by bearing housings in each case held by screw-threaded rods engaging the housings and being secured directly to a main supporting frame.Such an arrangement leaves additional room between adjacent pairs of rolls and a second set of rollers are nested between the first set also with the simplified support arrangement at each end of each roll so as to allow a second rolling line to be kept in position and available for prompt use without as has hitherto been the case the necessity to change rollers.

Abstract: In a method for simultaneously cutting three continuous double-comb components from a metal strip the strip is moved forward stepwise. At each stop, a row of notches is made along each edge to form teeth and a row of crosses is removed from its central part, the crosses being made up of two portions of the central part and two teeth facing notches and separated therefrom by a portion of the central part. After the teeth have been bent, the comb-shaped components can be used to reinforce rubber packing or linings, more particularly in the car industry.

Abstract: The present invention provides methods and apparatus improving the dimensional accuracy of forged components. Uniformity of like component details is sought and a specific object is to provide a die package for forming closely toleranced appendages integrally with a central disk structure from which the appendages extend.In one effective embodiment incorporating concepts of the present invention, the forging dies include a stationary die and a movable die comprising at least two separately movable elements which are mounted on a common axis with the stationary die. A plurality of arcuate die segments are adjacently placed in cylindrical array about the stationary and movable dies. The arcuate die segments form cavities of the inverse geometry of the appendages to be formed and in at least one embodiment are interlocked to prevent tilting of the segments in the die package.

Abstract: A pipe-bending apparatus comprises an elongate structure having a longitudinal work surface at, or adjacent to, opposite ends of which clamping means and a former are respectively mounted. The former is held fast on the work surface, and the clamping means is power-driven towards and away from it by a double-acting hydraulic ram. A series of formers are provided, each having, in plan, a semi-circular anvil mountable to face the clamping means. The anvils are each of concave vertical cross-section and of different radius from one another, with peripheral walls to locate a pipe in position in the anvil during a bending operation. The ram is supplied from a tank containing a hydraulic fluid tank which--together with the necessary hydraulic pump and electric motor--is mounted beneath the work surface.

Abstract: A droplet impact sampler based upon the stain technique for measuring airborne droplets comprises a magnesium oxide coated, graphite target located within a cylindrical sampler head below a pneumatically operated shutter. The shutter is opened for a predetermined time period to expose the target to the specimen droplets which stain the target upon contact. Droplet size is determined by measuring the stain diameters and compensating for a flattening effect of the droplet that occurs upon impact as a function of several parameters, such as contact angle, water density and surface tension. Rate of deposition is determined by correlating the number of stains counted on the target with the operating speed of the shutter.

Abstract: A pneumatically powered hand-held torque wrench having a dial gage arranged on the handle portion of the wrench to display the amount of torque exerted upon a fastener by the tool. A pointer indicates the tool maximum torque attained during tool operation, including manual torquing effort by the tool operator, which pointer maintains maximum torque read-out until the pointer is reset by the operator. A mechanical linkage arrangement transmits tool handle flexure into rotation of the dial gage to indicate maximum torque value developed upon a fastener being worked upon.

Abstract: A wrench is disclosed which provides a readout of its angle of rotation by means of an inertial body mounted in a housing affixed to the wrench. Manual and automatic means are provided for determining the rotation of the housing with respect to the body.

Abstract: Downhole cable tension measuring apparatus according to the invention is connected between a cable and well-logging apparatus suspended from the cable in a borehole. A rod is placed between the cable and the well-logging apparatus so as to elongate elastically under the effect of cable tension. A sleeve, fixed at one end of the rod, surrounds the rod. A transformer, the primary of which is wound on the rod, the secondary of which is wound on the sleeve, detects the relative longitudinal displacement of the other end of the rod with respect to the sleeve. Two primary windings displaced on the rod are alternately excited to generate two signals in the secondary coil in order to correct temperature drifts of the circuits. The rod and sleeve are made of the same metal so that each of them will elongate similarly as a function of temperature. The apparatus is placed in a pressure-balanced oil-filled chamber.

Abstract: An improved system for determining the vertical direction relative to a moving base includes gyroscopic rate sensors for determining angular velocities of a device such as a weapon mounted on the base, relative to two orthogonal axes; a gyroscopic rate sensor for determining the roll angle velocity of the system and a calculating circuit for determining the roll and pitch angles needed to ascertain the vertical direction.

Abstract: A pneumatic pressure averager primarily for use in connection with aircraft instrumentation, which provides for three pressure outputs available from two pressure sources. Two of the outputs represent the input pressures directly, and the third output represents the average of the pressure from the two separate input sources.

Abstract: For use in gas meters and the like, an improved sliding valve assembly constructed so as to be capable of self restoring the relative sliding motion between a sliding valve and its valve seat when a viscous foreign material tending to accumulate on the valving surfaces inhibits the normal motion of the valve, and thereby insuring a more accurate and reliable metering of a fluid material.

Abstract: The invention is an improved liquid level indicator for the liquid in a reservoir. The invention consists of float mechanism in a framework which permits the float mechanism to be immersed in the liquid in the reservoir and float thereon. The float mechanism magnetically controls a companion device in a hollow enclosure, protected from contact with the liquid in the reservoir. As the level of the liquid in the reservoir changes and the float mechanism follows the changing level of the liquid, it likewise changes the position of the companion device through its magnetic control. The companion device is wired to signal the liquid level at an appropriate read-out site.

Abstract: An averaging temperature responsive apparatus for use in an air conditioning system to measure the average temperature of air passing through a duct has a tube extending transversely across the air duct. The tube has a series of spaced inlet openings on the upstream side and at least one exhaust opening on the downstream side. A temperature responsive element is mounted adjacent to the exhaust opening. Each of the inlet openings is made by cutting the tube and bending a portion of the tube inward so that upon air entering the inlet opening, the air is directed through the tube in a direction toward the exhaust opening.

Abstract: A fluidic analog temperature sensor which compensates for variations in the supply pressure to the temperature sensor.

Abstract: A temperature sensor is fixedly attached to a thin, flexible disc-like metal plate with sufficient flexibility to conform to the general shape of a surface. The sensor may be thermocouple, a resistor, a semiconductor or other structure. This thin metal member has a low thermal capacity or mass and a relatively high degree of thermal conductance. A tubular insulating and elastic member is fixedly attached to the periphery of the plate and to a tubular housing having an attached handle. The housing functions as a support and an enclosure for the temperature sensitive unit, flexible connecting leads and the like. The elastic member permits the plate to pivot about the housing to move into complete surface engagement with the surface being monitored. The electrical wires connected to the temperature sensitive unit are relatively fine to minimize the thermal mass and capacity added to the unit. The wires are also flexible such that they do not interfere with movement of the plate.

Abstract: A urine measuring instrument for receiving, collecting and measuring urine from a catheterized patient comprising a transparent, graduated container with an upper inlet and a lower outlet to which a urine bag can be connected, said container being subdivided into several side-by-side vertical chambers into the first of which the inlet communicates, all the chambers being open to one another at the top and separated from one another at the bottom by a multi-path valve, all the chambers being in communication with the container outlet through said valve, and each chamber having a scale thereon.

Abstract: To obtain a measure of the size of a spot weld nugget, the weld is scanned with an ultrasonic beam of about 20 megahertz frequency. The ultrasonic signal transmitted through the part is analyzed to determine the presence of the part and the presence of a weld. The detected signal is gated to pass a portion of the signal which has been multiply reflected through the weld region to a bandpass filter which passes frequencies that are selectively attenuated by a weld nugget much more than the surface bond or stick zone surrounding the nugget so that the energy content of the filtered signal is used to determine the presence of nugget material at any point during the scan. A chart recorder controlled according to the energy content of the filtered signal produces a characteristic signature for each weld which distinguishes between the extent of the stick zone and the nugget of each weld so that the weld nugget size is readily determined.

Abstract: Disclosed is a nondestructive test method for inspecting an object, including the steps of generating a surface acoustic wave at a first location on the object, detecting a harmonic of the generated wave at a second location on the object, and relating the characteristics of the detected wave to the remaining useful life of the object. The amplitude of the detected harmonic may be compared to standard amplitude values to predict the percentage of fatigue life remaining in the object, or the amplitude may be used to estimate the size and density of cracks in the object. Additionally, the harmonic wave may be detected for a range of stress values, the amplitude differential between the maximum harmonic amplitude and the minimum amplitude under compression calculated, and the differential related to the remaining useful life of the object.

Abstract: A high resolution, ultrasound imaging system is disclosed having a transducer which produces a diverging beam of ultrasound energy of sufficiently large angle so as to impinge on the sound-reflecting object from substantially all positions along the transducer scan path.

Abstract: Disclosed is an apparatus and method for nondestructive testing of structures where the apparatus includes a transducer for generating an ultrasonic acoustic signal, a nonlinear medium for parametrically generating a special, ramp, waveform, and an acousto-optic broadband receiver for detecting a reflected signal from the test structure. A homodyne interferometer is provided to measure the change of refractive index of the acousto-optic receiver, and generates an electrical signal representative of the reflected acoustic signal. Signature analysis techniques are utilized to evaluate the reflected waveform to determine the characteristics of the structural defects.

Abstract: A simple torque tube device which can be used in a shake table system to prevent rotation of the table about a predetermined axis without restricting the table in other degrees of freedom. A torque tube device which can prevent table rotation about a horizontal axis, includes a horizontal tube lying below the table, and a pair of largely vertical links having lower link ends pivotally connected to arms which lie at opposite ends of the tube and upper link ends pivotally connected to the table.

Abstract: Disclosed is an acoustic wave sensor, including an acoustic wave oscillator having a resonant frequency which is modulated according to changes in a physical variable and a broadcast amplifier for directly transmitting the modulated frequency as a radio frequency signal. As a surface acoustic wave pressure sensor, the sensor includes a housing defining a cavity therein, an opening in the housing communicating with the cavity, a surface acoustic wave transducer attached to the housing to close the opening and adapted to deflect in response to a pressure differential across the transducer, an amplifier coupled to the transducer in a feedback loop, the transducer thereby being adapted to modulate the resonant frequency of the loop in response to the deflection, and a broadcast amplifier for directly transmitting the modulated frequency as a radio frequency signal.

Abstract: A flowmeter determines the density of a fluid stream by periodically shifting a carrier sonic signal at a carrier modulation frequency and detecting the peak received energy after the carrier sonic signal traverses the stream. The flowmeter may additionally determine the temperature, volumetric flow, and mass flow of the fluid stream.

Abstract: Two components of the velocity of blood or similar liquids and the true flow vector are derived by a linear transducer array cross-beam configuration. Ultrasound pulses are transmitted from the center elements and backscattered echoes are received by left and right receiver sub-arrays whose locations depend on the observation point. A duplex imaging system with a sector scanner incorporates a Doppler modality with little added complexity and provides components of flow velocity parallel to and transverse to the acoustic beam direction from which the true velocity vector is computed.

Abstract: A flow meter comprises a fan wheel provided in a passage of a running fluid to be rotated thereby; a composite magnetic wire formed of a core and shell and fitted to the fan wheel; a pair of mutually facing permanent magnets arranged substantially in parallel above a plane through which the composite magnetic wire is rotated, with the poles of the opposite polarities set adjacent to each other; a magnetic core wound with a coil and disposed between the paired permanent magnets, and wherein, when the composite wire faces one of the paired permanent magnets, the alignment direction of the respective magnetic domains of the core of the composite magnetic wire is changed, and when the composite wire faces the other of the paired permanent magnets, the respective magnetic domains of the core of the composite magnetic wire regains the alignment direction before said change.

Abstract: A frequency selector (tuner) employs a turret to select the position of a slide member that is coupled to a variable reactance. The slide member is moved away from the turret by depressing an operating member and returns to the turret when the operating member is released. Depressing the operating member rotates the turret concurrently with the movement of the slide member, but interference between the slide member and cooperating position setting elements that project from the turret is avoided by a displacement mechanism on the slide member. The projection of the position setting elements is adjusted by turning the operating member. A further operating member is provided for turning the turret in opposite directions, the final position of the slide member being set by depressing the first-mentioned operating member.

Abstract: An orbiting mass oscillator for generating vibratory energy has an unbalanced rotor which is rotatably driven around the wall of a housing. Oil is fed to the housing with a longitudinal flow therein to provide a thick oil film between the rotor and the housing wall, thereby providing cushioning therebetween which dampens the effects of sharp jolting forces on the oscillator in situations such as where the oscillator is used to drive a drill or cutter against hard material or drives a transducer which is coupled to liquids. This damping or cushioning effect tends to prevent hard metal-to-metal contact between the rotor and the housing which would cause damage to these components. The oil film is efficiently driven ahead of the moving bearing surface by means of an inwardly curved leading edge on the rotor. This turned-in leading edge facilitates the movement of the rotor up on to the oil film which then separates the rotor from the housing and forms an effective cushion or dampener therebetween.

Abstract: A vibration generator has a driven excitation shaft on which are fixed two axially-spaced first eccentric weights. A second eccentric weight positioned between the two first eccentric weights also rotates with the excitation shaft but is angularly adjustable thereon about the longitudinal axis of the shaft in order to adjust the vibration amplitude. Such adjustment employs a pawl mounted on one of said first eccentric weights for two-and-fro movement tangentially of a gear ring mounted on said second eccentric weight and with the toothed periphery of which the pawl engages. The second eccentric weight is lockable in adjusted position by a friction disc mounted on said one first eccentric weight and into frictional engagement with which the second eccentric weight is urged by a set of annular disc springs disposed in compression between the second eccentric weight and the other of said first eccentric weights.

Abstract: A mechanism for translating rotation motion to linear motion utilizing a turret rotatable about a first axis carrying a crank shaft rotatable about a second axis parallel to but offset from the turret axis and carrying a crank arm which in turn carries a drive element having a third axis parallel to but offset from the first and second axes, the drive element contacting and driving a driven element guided for movement along a generally linear path upon the rotation of the turret between first and second generally diametrically opposite positions relative to the arc of rotation of the turret, a pair of cooperative abutment members for absorbing the momentum of a load driven by the driven element, one of the abutment members being carried by the turret and gearing meshingly interconnecting another of the abutment members and the crank shaft, the one abutment member being effective to contact and move the other abutment member upon the driving element moving contiguous the first and second positions, and a sprin

Abstract: A linear-rotary translator includes a pair of parallel, planar plates spaced apart and held by bolts having eccentric bodies. A drive shaft parallel to the bolts is journalled in the plates and is adapted to engage an operated device related to the plates. A pair of drive forks on the drive shaft straddle a drive rod between the plates and engage rollers extending from a block on the drive piston rod and disposed between the drive forks and reciprocable in rectilinear slots in the plates. The drive rod extends from a piston-cylinder arrangement pivoted to and located in part between the plates. If desired, a spring rod also engages the block, extends through a spacer pivoted between the plates and cooperates with spring discs arranged on the spring rod.

Abstract: A sheet metal drive disc-pulley assembly adapted for driving rotation by a V-belt to drive a friction wheel such as that in a lawn mower or other mechanism using a drive assembly. Two of three, coaxial, circular pieces of sheet metal define a bearing pocket, which axially and radially locates a bearing unit, and a V-belt receiving groove which, in the preferred embodiment, is spaced outwardly and radially aligned with the bearing pocket for proper resistance to belt tension. The marginal edge of the generally planar, third piece is bent and clamped around the periphery of a conical brace extending from the flared edge of the V-belt groove on one of the first two pieces to form a radially extending friction wheel engaging disc.

Abstract: The chain comprises alternately pivotally interconnected outer links and inner links. The outer links are formed by outer plates which are interconnected by spacer members and the inner links are formed by inner plates which are trapped between the outer plates and are rigid with tubular members through which the spacer members extend. Each inner plate comprises two planar portions of rounded or part-circular shape which are interconnected by a center portion. At least a part of the center portion is deformed relative to the general plane of the plate. The inner plates of a given link have their deformed part offset and facing outwardly of the link so as to constitute an entrance or lead-in for sprocket teeth. In this way, the engagement of the chain on the sprocket is facilitated, in particular when changing gear by means of a derailleur acting on the chain.

Abstract: A three-phase accessory drive system associated with the engine of a vehicle and providing a high ratio drive phase from vehicle engine idle to a first predetermined engine speed, a substantially constant speed drive phase above the first predetermined engine speed to a second predetermined engine speed and a low ratio drive phase above the second predetermined engine speed. The accessory drive speed is also temperature compensated.The drive system comprises the combination of a planetary gear set, a friction brake, a friction clutch and a hydraulic system operatively associated with the brake.

Abstract: In a torque support arrangement for a gear mounted so as to be movable about a pivot axis, wherein the gear is supported against the base on both sides of the pivot axis by an elastic supporting arrangement, the supporting arrangement includes a pressure-medium piston-cylinder to which pressure gas is admitted and whose position relative to the base is adjustable by means of an adjustment device.

Abstract: A gear selector mechanism for a vehicle gearbox comprises axially displaceable shift rails and rocker forks joined thereto. Upon axial displacement of the shift rails, the rocker forks can swing to displace engaging sleeves in the coupling and synchronizing means of the gearbox. A plurality of rocker forks are journalled in a common fork holder formed by two parallel bars arranged at a distance from each other and oriented in the direction of the gearbox shaft.

Abstract: Emergency brakes in track-type vehicles are usually applied by actuating either foot pedals or a hand brake, or both. The present invention provides an emergency brake which can stop and hold the vehicle due to movement of a single pedal (45) without the need to operate any other controls (16) on the vehicle.

Abstract: PCT No. PCT/US79/00319 SEC. 371 Date May 14, 1979 SEC. 103(e) Date May 14, 1979 PCT Filed May 14, 1979An apparatus (10) includes an upwardly inclined stationary support column (12) and an upwardly inclined steering wheel column (14) pivotally mounted thereon. An interlock mechanism (86) is provided at the distal end (52) of the support column (12) for locking the columns (12, 14) together at one angular position including that of substantially parallel alignment of the columns (12, 14). A vehicle control member (60) can be mounted at the distal end (52) of the support column (12) subjacent the steering wheel (16), and the support column (12) can include a pair of posts (30, 32) defining a U-shaped slot (50) for receiving the steering wheel column (14).

Abstract: An operating cable composed of an outer tube which is made cylindrical through the winding operation of a band-shaped steel-sheet in a spiral shape, and an inner wire which is inserted into the outer tube and is guided by the outer tube. A groove which is open on at least the winding inner side of the band-shaped steel-sheet is provided, in the band-shaped steel-sheet, along the length direction. A band-shaped liner is engaged into the groove to project from the winding inner side of the band-shaped steel-sheet. The depth of the groove is made greater than a distance D-d, where D is the outer diameter of the operating wire and d is the winding inner diameter of the liner in the outer tube, which is formed by the winding operation of the band-shaped steel-sheet with the liner engaged in the band-shaped steel-sheet.

Abstract: This multiplier includes a first link unit in a force transferring relationship with one of an actuator and a device to be actuated. A second link unit is pivotably connected to the first link unit in a force transferring relationship with the other of the actuator and the device to be actuated. At least one spring in a force transferring relationship with at least one of the first and second link units is provided. The first and second link units are disposed between the actuator and the device to be actuated with the first and second link units in cooperation with each other and the spring providing a relatively linearly increasing multiplied output force to the device to be actuated when the actuator is actuated.

Abstract: A manual and power motivated drive apparatus, wherein a web is advanced by a drive means, such as a motor comprises; a driven means mounted on an output shaft coupled to the drive means; a manually rotatable input shaft; a first motion transmission means mounted on the input shaft; and a second intermediate motion transmission means engaging the first transmission means and rockable about the input shaft upon the rotation of the first transmission means. The second transmission means is rocked about the input shaft upon rotation thereof in a manner to be brought into engagement with the driven means, whereby the driving force of the input shaft is transmitted by way of the first and second transmission means and the driven means to the output shaft.