Abstract: A refrigerator cabinet having a chamber divided by a mullion into a freezer and fresh food compartment, each having a front door open. Arranged in the mullion and front door opening of the freezer is auxiliary liquid line loop arrangement whichprevents condensation from forming on the freezer front door openings. A valve is provided in the auxiliary line arrangement for controlling flow through the auxiliary liquid line in response to the ambient relative humidity conditions.

Abstract: A heat transfer loop is continuously supplied with hot refrigerant at high pressure from the compressor of a refrigeration system and disposed in contact with evaporator piping to minimize the accumulation of frost thereon.

Abstract: An apparatus and a method for making ice are disclosed wherein ice forms on two sides of a plurality of freezing plates which are vertically arranged within a housing. A water distribution chamber positioned immediately above the freezing plates includes a plurality of inverted "V" shaped ridges in a bottom portion thereof. Each ridge corresponds to one of the plurality of freezing plates and includes a series of orifices arranged to direct water onto each side of the corresponding freezing plate. At the bottom of each freezing plate is a plastic strip which prevents ice slabs from the two sides of the plate from joining together at the bottom. Beneath the ice plates is a rotating sizer which fractures the ice slabs from the plates into pieces having a predetermined maximum size. The pieces fall through the sizer onto a screw conveyor which cooperates with a perforated lower housing to remove small undesirable ice pieces from the fractured ice.

Abstract: Peripherally-driven scroll apparatus. The orbiting scroll member is attached through radially-compliant linking means to eccentrics mounted on three equally spaced crankshafts to accommodate differential thermal expansion without the generation of any appreciable elastic forces to increase bearing loads. Means are provided to prevent axial deflections in the stationary scroll members while permitting their supports to be designed and constructed for strength rather than stiffness. The apparatus may be staged and employed as a compressor or expander.

Abstract: A yoke for a hookes universal joint, formed of a lightweight metal and having a base, two limbs extending axially from the base, the limbs having reinforcing flanges at least adjacent to the base and the thickness of the base being such that the limbs and base form a generally U-shaped structure of high rigidity.

Abstract: A constant velocity universal joint of the three-roller type, capable of exactly transmitting power at constant velocity, comprises two drive members, one of which includes three yoke pins with respective roller means. Each roller means comprises an inner movable member adapted to rotate about the axis of the associated yoke pin and move axially of the pin, and an outer movable member disposed outside of the inner movable member and tiltable with respect to the rotational axis of the inner movable member. The other drive member includes guide grooves for guiding the outer movable members of the roller means along the rotational axis of the drive member itself.

Abstract: A floating cushion sub for connection to the rotary power head of a drill rig has a mandrel section connectable to a drill string and an outer housing section connectable to the power head. The mandrel and the housing have mating, axially extending splines permitting relative axial movement while also transmitting torque from the power head to the mandrel. Mandrel axial movement is limited by a cap member and by an internal shoulder in the housing. A resilient cushion adjacent the shoulder dampens vibrations when the mandrel and housing are compressed together and a similar cushion adjacent the cap member dampens vibrations when the mandrel and housing are at full extension. The axial movement of the mandrel relative to the housing improves the function of making or breaking the threaded connections with the drill string by permitting proper coordination of the mating thread pitches and reduces the chance of cross-threading.

Abstract: The relative position of one knitting system in a knitting machine is varied with respect to another knitting system to vary the stitch patterns produced by the machine. The knitting machine includes one knitting carriage having two cam holders each provided with two knitting systems. At least one of these knitting systems is associated with moving means adapted to locate the system in at least two different working positions with respect to the other knitting system.

Abstract: A knitting width indication system for hand knitting machines, wherein a fabric piece pattern memory device and a pattern width indication display device cooperating with the knitting machine carriage are provided, and whereby the knitting width is read out step by step from the pattern width electronic memory device in synchronism with the traversing movement of the carriage on a needle bed to display the knitting width of each knitting step on a pattern width indication display device. The pattern width electronic memory device stores a variety of fabric outline pattern data. The fabric outline width data are read out and displayed in serial order, in synchronism with each traversing movement of the carriage. Referring to the fabric outline width datum on the display device, the operator can set the proper knitting width on the needle bed.

Abstract: A weft thread tensioning device for use on a warp knitting machine provides a means for testing the tension of the weft threads and, if the threads are not at the desired tension, tensioning the threads to a predetermined amount. The device includes a spring loaded lever and U-shaped bracket which adjust the tension on the weft thread just prior to insertion into the bed of the knitting machine.

Abstract: Modifications to a conventional warp knitting machine, which permit the loops on terry cloth towel material to be equal on both sides of the material, include a sinker bar with unequally spaced sinkers that are alternately disposed along the length of the sinker bar. The larger spaces accommodate a plurality of threads while the smaller spaces accommodate a single thread. The invention also permits the use of thicker thread for the pile loop than heretofore.

Abstract: A fabric is produced in a stitch-through type machine such as a Malimo maching using the apparatus and method of the invention which has at least two warp yarn design elements laid on a flexible substrate (e.g., a layer of textile filling elements) along rectilinear or non-rectilinear paths and on which a plurality of adjacent design elements are twisted (e.g., symmetrically at 180.degree. per twist) in an aesthetically pleasing configuration at spaced intervals along the warp direction. The design elements are bound to the substrate by knitting thread which forms a multiplicity of warpwise loop chains (e.g., a half-tricot stitch) to secure the substrate and design elements against relative displacement and to form thereby an integrated fabric structure.

Abstract: An escutcheon and cover assembly for a lock cylinder is provided with a spring biased pivotal arrangement and stops which cooperate to provide normal opening and closing movement of the cover for access to the lock cylinder and in addition, provide for pivotal movement of the cover in an unorthodox manner to provide access to the escutcheon for attaching same about the lock cylinder.

Abstract: A tube extrusion press extrudes tubes through the annular space formed when a mandrel projects into the aperture of an extrusion die. In order to prevent oxidation of the extruded product, the outside of the tube passes into a cooling section immediately downstream of the die, and a protective gas is blown into the interior of the tube through the mandrel which is hollow and has an opening in its tip. Both the inside and the outside of the tube may be coated with a liquid emulsion, and the hollow mandrel can have internal channels for the passage of a cooling liquid.

Abstract: A rivet nut setting tool having a frame with a head at one end and a grip at the other. A lever is pivotally mounted on the frame and its grip is generally parallel with the frame grip. The lever carries a threaded shaft which extends through an opening in the head. The shaft is rotated to take up the rivet nut to be set, and the grips are squeezed together to set the rivet in the work piece.

Abstract: A rolling mill and method for single strand rolling of bar sections is provided having a plurality of successive in-line roughing roll stands on a pass line in which the last two roughing roll stands are radially adjustable transverse to the pass line to produce a rough bar having a cross section substantially the same at its finished section and a plurality of successive in-line finishing roll stands receiving the rough bar and rolling the same to finish condition.

Abstract: A roll mill stand comprises a housing which mounts chocks having secured therein journals carrying work rolls forming a pass, at least one of said work rolls being coupled by means of a splined joint with one end of a spindle, the other end of said spindle being connected by a splined joint to a pinion geared to a drive means. The roll mill stand is provided with an arrangement for axial displacement of the spindle, comprising a motion screw mounted coaxially with the spindle and coupled with its other end, the motion screw carrying a nut with a disk affixed to the end face thereof, the nut being mounted on a hub coupled with the spindle shaft for rotation with respect to said nut, the roll mill stand being additionally provided with a braking mechanism placed on the stationary part of the roll mill stand and cooperating with the disk of said nut, as said nut is being slowed down to disengage the spindle from the work roll.

Abstract: Methods are described for producing novel shaped objects drawn from sheet metal blanks having a surface design in one or more decorative metals of contrasting color. The design is applied to the flat metal blank with distortions which substantially compensate for the metal deformation in forming the object from the blank.

Abstract: A process and apparatus for upsetting pipe ends, in particular drill rod pipe ends forming tool joints. The pipe end is held in a bottom die of a press and a shoulder mandrel is axially driven into the pipe end by a ram thereby simultaneously upsetting and filling the empty space between the die and the pipe end. The process includes at least two steps. In a first step the pipe end is upset on the outside into a cylindrical pipe section of larger diameter and a defined conical transition region while the internal diameter remains unchanged. In a second step the upset pipe section is swaged inwardly by means of a swaging tool mounted on the ram of the press.

Abstract: Gaging apparatus for a metal forming machine having a gage bar which is pivotable about a central longitudinal axis of the bar and which is maintained in a normal position by a spring mechanism. In the presence of an upward force applied to the bar, the bar will pivot upwardly, and upon removal of the upward force, will be returned by the biasing action of the spring mechanism to its rest position. A switch can be associated with the gage bar for actuation during upward movement of the bar to provide a control signal to the gage positioning system to cause withdrawal of the bar away from the metal being formed.

Abstract: An apparatus for driving a pair of gripper bars of a multi-stage press in a longitudinal direction of the press which includes a pair of driven levers disposed symmetrically to a longitudinal center plane of the press, which levers are engageable with a slide guide extending at right angles to the longitudinal direction of the press. At least one feed cross member is operatively connected to the pair of gripper bars and also to the slide guide associated with the pair of driven levers. Two toothings are provided which are disposed symmetrically to the longitudinal center plane and are conjointly reciprocatingly driven between two end positions. Each toothing meshes with a pinion mounted for rotation and fastened to the frame with the pinions having a rotational path between the two end positions of the toothing which amounts to 180.degree.. Each pinion is also rotationally fixed to one of the pair of driven levers.

Abstract: A die assembly for making tubing-elbow halves comprises an upper die half having an upper arcuate relatively long holder, a plurality of relatively short and arcuate upper die sections secured in an upper row to this upper holder and having arcuate and downwardly convex lower faces together forming an elongated and substantially continuous downwardly convex arcuate lower surface, and an upper end section at each end of the upper row and each having a generally semicylindrical downwardly convex face forming a continuation of the lower surface. This assembly also has a lower die half having a lower arcuate relatively long U-section holder, a plurality of arcuate lower die sections complementary to the upper arcuate die sections, and a lower end section at each end of the lower row of lower die sections and each having a generally semicylindrical upwardly concave face forming a continuation of the upper surface of the row of lower arcuate die sections.

Abstract: A device for crimping a rigid, tubular ferrule for securing a coupling to a flexible hose comprising a pair of crimping dies, each die having a concave face and spaced ribs formed on each of the concave faces. The ribs have a ramp portion formed on opposite ends thereof and in the knotched central portion. The die support has a central web having a flange extending outwardly from each end, one of the flanges being adapted to hold one of the dies. The second die is moveable along a track formed on the central web defining a straight path toward the first die. A screw urges the moveable die along the track to engage the first die and perform the crimping operation.

Abstract: A transfer mechanism for horizontal forging machines, particularly useful for transferring relatively large workpieces which incorporate a porter bar, such transfer mechanism comprising a collet and a collet holder, both being mounted for in and out movement on a movable transfer plate, the collet being movable toward the workpiece with respect to the holder to grip the workpiece therein, with the transfer plate being supported for swivel movement on an axis to swing the collet and thus the workpiece to clear the stationary dies of the forging press, the transfer plate also being movable to index the workpiece gripped by the collet from a loading station through successive forging die stations.

Abstract: A mounting pin of circular cross-section is rendered eccentric and used to artifically agitate a motion snubber used to shock mount components of a nuclear power plant, thereby making possible testing of such a snubber without dismounting it.

Abstract: A housing, a first elongated generally cylindrical member fixed to the housing and having an open end which is adapted to be in open communication with the interior of the sealed transformer casing; this first member also has at least a portion of its length composed of transparent material for viewing the interior. Means, such as a float, are contained in the first cylindrical member for providing a visual indication of the gas emission levels. Additional means are coupled to and communicate with the first cylindrical member for measuring gas emission levels in the transformer and for measuring variations in the internal pressure of the transformer casing. A second generally cylindrical member is fixed to the housing and has one end adapted to extend into the sealed transformer casing. This second member includes means, such as temperature sensors, for detecting changes in the temperature of the dielectric in the transformer casing.

Abstract: The invention is a process and apparatus for measurement of diffusible hydrogen within a metal, in which a metal sample is placed within an enclosed collector vessel for a predetermined time and at a predetermined temperature, and the total resultant effused gases within the collector vessel are fed to a gas chromatograph.

Abstract: A method of collecting and processing geochemical samples in which particles which are contained on the very surface, or surficial layer of the earth, or of vegetation are collected, and are graded to exclude fine particles below about 50 microns in size.

Abstract: Method and apparatus for fluid pressure testing of tubes or pipes is provided wherein the tube or pipe under test is sealed at the ends by a resilient O-ring between the inside diameter of the tube or pipe and convex, preferably conical faces at each end of the tube or pipe, with the conical faces being held firmly in place against the outward thrust of the test fluid pressure by hydraulic action utilizing the pressurized testing fluid.

Abstract: An apparatus for measuring stagnation pressure and yaw angle as well as providing static pressure and pitch angle indications at any point in subsonic and supersonic elastic fluid streams. Determination of both the static and stagnation pressures at any selected point permits Mach number determination anywhere along the radial length of axial flow turbine blades. Such localized Mach number determinations permit close monitoring of blade performance in axial flow turbines.

Abstract: A system for sensing and monitoring the injection of fuel into a fuel injection type engine, such as a diesel engine, including a piezoelectric transducer comprising a piezoelectric collar mounted on the fuel line to sense the change in dimensions of the fuel line due to the surge of pressure created in the fuel line as the fuel is injected through the line into the engine.

Abstract: A testing apparatus for an anti-lock control system for vehicle brakes for testing the correct functioning of the control system. In one embodiment, the apparatus establishes a predetermined speed and compares this predetermined speed to the speed sensed by the sensing portion of the control system. When the predetermined speed is exceeded by the moving vehicle a testing apparatus is triggered which initiates a test procedure for the control system. The apparatus includes a switching device to insure that a test procedure is initiated only after the vehicle ignition switch is actuated. In another embodiment, the apparatus employs a temperature sensor and/or the control system output for initiating a test procedure, but not during a deceleration of the vehicle. In a further variant, two threshold levels are established, each of which must be encountered before the test procedure is initiated.

Abstract: A probe or instrument to be moved through casing assemblies having ports therein at different levels selectively to take samples and/or measurements at these levels. The probe is an elongate body which is lowered through the casing assembly by a suitable cable. A stop on the body cooperates with a stop in the casing assembly at each level to position a port in the body in registry with a port in the casing at this level. A seal on the body is pressed against the adjacent casing assembly wall to isolate the registering ports from the interior of the casing at this time.

Abstract: Method for performing step rate tests on injection wells, including inserting a portable pumping unit to receive the water or other fluid normally injected into the well and controlling its pressure, and then increasing the pressure of the injection fluid to a predetermined pressure by use of the portable pumping unit to determine fluid flow at said predetermined pressure, the fluid at the predetermined pressure being pumped continuously until a stable flow rate is achieved. The procedure is repeated for plural stepwisely increased pressure points at each side of the fracture pressure, whereby the fracture pressure is accurately determined.

Abstract: Pressure ratio transducer system in which input pressures are converted to electrical signals and the electrical signals are processed to produce an output signal corresponding to the ratio of the input pressures. The system is particularly suitable for use in an aircraft for determining the ratio of the change in pressure due to motion of the aircraft to the static pressure in the air surrounding the aircraft.

Abstract: Disclosed is a mass flow rate meter having two U-shaped flow loops, means for vibrating the flow loops like the tines of a tuning fork, timing means on the loops for sensing the difference in times between the passing of the sides of the loop through the static plane of the loops, and sensing means for determining which side of the U-shaped tubes went through the static plane first. The time between the passing of the sides of the loops during one half cycle of the vibrations of the loops is combined with the time of another half cycle of the vibrations dependent upon which side of the loops pass through the static plane first. An embodiment is further disclosed having a microprocessor for combining the times, and for comparing these times with a selectable variance from the time of a predetermined set of vibrations before the present time measurement is accepted. Electronic circuitry is also disclosed which improves the time measurement of the timing means.

Abstract: A flowmeter for measuring the throughput of a liquid from a source to a load, especially for gasoline, diesel oil, heating oil and the like, comprises at least two measuring cylinders having floating pistons and respective reversing elements which have two positions in which the reversing elements can be temporarily retained. A first reversing element is controlled by the first measuring cylinder and controls the reversal of flow of the liquid to the second measuring cylinder and vice versa. Means is provided for counting the strokes of each of the floating pistons to signal the quantity of displaced liquid.

Abstract: A device enabling the operator of an internal combustion engine to visually inspect the quality and level of a fluid held within an associated fluid sump of the engine, transmission, or other adjacent fluid sump. The device operates directly from the vacuum system of the associated engine to selectively draw fluid from the sump upwardly into a viewing chamber. A lamp behind the chamber illuminates the fluid to facilitate visual inspection. If the fluid is below a prescribed level, no fluid will be drawn into the chamber, thereby indicating to the operator that the fluid level is below a specified minimum. The device may also be provided with a continuous monitoring system whereby fluid may be initially drawn into the visual inspection chamber and held there indefinitely or until the fluid drops below a prescribed level. When this happens, the continuous monitoring system may function to activate an annunciator giving warning to the engine operator that the fluid level is low.

Abstract: Apparatus for measuring changes in volumetric content of a storage tank having a predetermined relationship between changes in liquid level and the change in volumetric content. The apparatus includes a tape windable onto and off a reel co-acting with a counterweight. The tape has means at spaced intervals along a selected portion of the length thereof consisting of performations or, alternatively, at least one notched edge driving a digital counter through a drive pulley. The means at spaced intervals on the tape positively drives the counter with a controlled amount of slip between the tape and the counter driving mechanism corresponding to predetermined non-linear relationships that may exist between the float movement and volume change whereby there is a direct reading of changes in volumetric content of the storage tank throughout the entire extent of travel of the tape.

Abstract: A bottom vessel head mounted tube within a tube assembly is used to retrieve particulate matter from a fixed bed reactor. Particulate matter enters the device through coinciding inlet ports in the tubes and flows by gravity to the bottom of the inner tube. By shifting the alignment of the inlet ports, flow is stopped and the catalyst sample flows by gravity into a valved receiver which is depressurized before catalyst is recovered. The device samples catalyst at one elevation.

Abstract: A rate sensor is disclosd for use in applications requiring high reliability such as in aircraft or tank gun stabilization systems. The rate sensor consists of a sensor rotor supported within a volume of magnetic fluid contained in a sensor housing to which is applied a magnetic field, levitating the sensor rotor in a central location within the housing cavity. A plurality of sensor means are provided positioned about the axis of the sensor rotor detecting the relative movement between the sensor rotor and the sensor housing occurring upon rotation of the housing from which an output signal corresponding to the rate of change of rotation of the housing.

Abstract: Hydrostatic bearing apparatus adapted to mount a shaker-coupled, dimensionally temperature dependent test piece for vibratory oscillation along a predetermined test axis. The apparatus comprises a support block having a compliant section defining a bore, a shaft axially journaled in the bore and defining therewith a bearing locus paraxial with the test axis. Bracket means is provided securing the test piece to the shaft beyond the locus for bearing-guided test axis oscillation, the bearing locus being test axis paraxially bodily displaceable responsive to displacement of the compliant section in test piece dimensional change accommodating relation.

Abstract: A mechanical and electrical pressure sensor wherein the mechanical part includes a fluid pressure chamber with a magnetic, electrically conductive diaphragm moving out-of-contact with a stationary contact in the presence of pressure and into contact therewith in the absence of pressure or because of energizing of a cooperatively acting magnetic coil. The electrical circuit connected to the coil includes a clocked flip-flop, the output of which is high during a time interval when the contacts are open (coil energized) and which is low when the contacts are closed (coil deenergized). The duty cycle of energized time to total time is a measure of average coil winding current, and, hence, sensed pressure. The ratio of energized intervals to total intervals develops a useful digital measurement of pressure readily useful in a computer.

Abstract: A diaphragm seal assembly for use with a fluid pressure responsive instrument includes an upper housing member having a first inner side. This inner side has a recessed surface defining a cavity and includes a passageway extending through the upper member for connection with the fluid pressure responsive instrument. A lower housing member has a second inner side and a passageway extending through the lower housing member. A diaphragm is received in the cavity and is clamped between the upper and lower housing members. A clamping device is provided for securing the upper and lower housing members together. The improvement comprises a deformable lip structure extending from the first inner side for bending over the periphery of the diaphragm to sealingly secure the diaphragm to the upper housing member.

Abstract: A pressure gauge has a Bourdon tube element and a pointer mechanism supported on an inner support member which is substantially contained inside the case body of the gauge. The inner support member has a bore in communication with the inner space of the Bourdon tube. The case body has a flattened, outwardly projecting wall zone surrounding a first aperture. An end surface of the inner support member has a contour adapted to the contour of the case wall zone. The matching contours serve to position the inner support member and an outer connection member threads into the inner support member to hold it tightly in place. Seals are provided between the inner support and outer connection members and between the outer connection members and the case body. An air cushion sits on top of the dampening fluid. The air cushion is vented through a vent plug having a longitudinal bore that is terminated by a cross hole transverse to the bore.

Abstract: A thin-wall tube specimen is biaxially tested for stress analysis by applying compressive axial stress and either internal surface pressure or external surface pressure to the specimen. Torsion is not required. The sample is positioned between platens which are assembled inside a pressure collet. Axial compressive stress is applied through the platens to the specimen, and hydraulic pressure is applied through the assembly to the internal and external cylindrical surfaces of the specimen. Rubber bladders may be employed when applying the surface pressures.

Abstract: In a torque transmitting mechanism of a starter, there is provided a shock absorbing arrangement having an input member and output member. When an abnormal torque appears, the members slip on each other to absorb such shock.

Abstract: An improved, blocked, change gear transmission having an input shaft normally driven by a one-way prime mover and an output shaft normally connected to a driven device is provided. The improved blocked transmission utilizes at least one improved blocker and jaw clutch assembly which allows engagement of a selected ratio gear under static conditions, i.e., when the driven device is at rest and the blocked transmission is in neutral.

Abstract: A disengageable transmission device is provided in which a driving pinion is used to selectively drive a driven wheel via a wheel train mounted on pivotal lever. The fulcrum of the pivotal lever is positioned so as to minimize the rotational torque effects on the wheel train lever of the contact between the driving pinion and the wheel train and of the contact between the driven wheel and the wheel train. An energy escapement control device is also provided and the torque effects of this device on the wheel train lever are also limited by the positioning of the fulcrum of the lever.

Abstract: This invention relates to a reduction mechanism including two gear trains, of different speed reductions, for rotating one cam, both gear trains having different input gears but a same output gear, said input gears being rotatable by a step-up gear mounted on a pivotable lever and rotatable by a driving pinion coupled to a motor, a second pivotable lever having followers responsive to ramp means provided on said cam for suddenly pivoting said first lever through a spring linked to said two levers and thus moving said step-up gear into engagement with the input gear of one or the other of said two gear trains.