Abstract: This invention provides a rugged dip-type viscometer suitable for use in a rotogravure printing plant, for example. The capillary of the viscometer is joined to a protective collar and gives high precision measurements with inks that contain air. The protective collar is provided with one or more apertures to provide increased precision.

Abstract: A thermoelectric level measuring device for measuring the fill level of a container having a filling material therein and a free space above the filling material comprises a series connection of three sensing resistors, the first of which is always surrounded by the filling material, the second of which is intended to be surrounded by the filling material and by the free space and the third of which is always located in the free space and an evaluation circuit connected to each end of the series connection and to the connection points between the sensing resistors.

Abstract: Method and apparatus for testing thermoplastic material comprising: passing as a stream a fractional, continuous, molten and flowable sample of the material to and successively through each of either a controllable pumping zone maintained at constant temperature and pressure or controllable pressure zone maintained at constant flow rate and temperature, and a die zone to form a continuous strand of the material; measuring the viscosity of the material in the pumping and die zones; providing a measurement of elasticity by obtaining a measurement of percentage of cross-section area swell in the strand in passage from the die zone over a constant length distance downstream of a point of strand marking to a point of strand marking to a point of mark sensing; and combining the viscosity measurement with the elasticity measurement to provide fuller rheological characterization data for the material.

Abstract: A viscometer has an element to be immersed in a liquid the viscosity of which is to be monitored. The element is continuously rotated through a resiliently yieldable connection with the stator of a transducer rotated in a constant, selected rate. The rotor of the transducer turns relative to the stator as the connection yields or recovers as determined by the viscosity of the liquid which can vary continuously providing a continuously variable signal by which a digital readout is continuously operated.

Abstract: A method and apparatus for determining the injected fuel quantity in internal combustion engines having self-ignition are proposed. A performance graph is prepared which includes the injected fuel quantity per stroke in accordance with the injection duration, with the rpm as a parameter. In order to avoid a fictive 0 point, the injection duration is shortened by a predetermined period of time and multiplicatively linked with an rpm signal, while linear rpm correction curves having a dependency of the rpm voltage on the injection duration can be assumed. At the output of an integrator by means of a sample and hold circuit, an injection quantity signal is produced whenever the rpm signal (Un) is supplied to the integrator for the integration process and the duration of the integration is determined on the basis of the injection duration signal (SD).

Abstract: The device described is designed to balance wheels and comprises a tripod, an element sliding vertically and mounted upon the tripod, a supporting element serving to support the wheel to be balanced and supported, in turn, in one instance, by the vertically-sliding element, a suspension element mounted upon the tripod and comprising a lever extending above the supporting element, a connecting element uniting the supporting element to the lever and allowing it, in a second instance, to be supported in free suspension upon being released from the vertically-sliding element. A first reference mark is associated with the connecting element, and a second reference mark is associated with the supporting element. Wheel balancing is carried out by adding weights to the wheel until the two reference marks coincide.

Abstract: A three-wire static strain gage apparatus utilizing a switching unit in combination with a Wheatstone bridge circuit to make strain gage measurements which are temperature corrected by switching to a temperature gage to measure the strain gage circuit's temperature at the time of the strain measurement.

Abstract: A urine discharge measuring system for medical use which includes a gimbal mounted frame supporting a urine container of fixed dimensions to collect urine from a urinary catheter attached to a patient. An ultrasonic transceiver mounted above the container and operated in conjunction with a microprocessor based control unit, positioned adjacent to the transceiver, periodically and automatically measures the height of the urine collected within the container. The measured fluid height is converted to fluid volume by the control unit. To maintain the sterility of the container, the transceiver transducer(s) is mechanically isolated from the urine container by elements which allow the ultrasonic energy to be transmitted to and received from the interior of the container. In one described embodiment, desired measured volume accuracy is achieved by employing a reflective target within the urine container at a known fixed distance from the transceiver transducer.

Abstract: An apparatus and method for testing a geophone during assembly is disclosed. The apparatus includes a light source cooperating with a photocell for generating a voltage signal in response to light. A member for support of the geophone to be tested is located in a defined path between the light source and the photocell for generating a voltage signal. The apparatus further includes a display unit for indicating the voltage signal generated, which is representative of the resilient characteristics of the geophone springs, characterizing the position of the geophone coil and its resonant frequency.

Abstract: Determination of "dry rubber content" (DRC) within a latex solution. Particularly, a volumetric analysis device, including an elongated chamber with a removable filter cap positioned at one end. A compression plunger is mounted within the chamber upon one end of an axially reciprocable shaft. A compression handle and dial drum scale are mounted at that other end of the shaft, which extends through the chamber end wall. A liquid flocculating agent is mixed with a measured volume of latex solution within the chamber, then compressed by actuating the plunger. During compression, the liquid residue is urged through the filter cap. The remaining batch of precipitated latex is measured as the "dry rubber content", accordingly as the exterior dial drum intersects a reference scale on the cylinder interior.

Abstract: An apparatus for detecting torque transmitted between two rotary members. A driving member and a driven member are connected via a transmission spring, permitting relative angular displacement therebetween. On either one of the two rotary members a wheel disk having a number of slits arranged in a circle is provided. A detector, such as a photocoupler, for detecting the slits is disposed on a frame adjacent to the wheel disk. A shutter disk with a shutter portion for partially covering the slits is attached to the other rotary member at an opposed posture to the wheel disk. The number of slits detected by the detector is varied according to the relative angular displacement between the driving member and the driven member while they are in rotation, and the torque between both rotary members may be numerically determined from the number of slits detected.

Abstract: An apparatus and a method of measuring the filterability of a fluid which includes a cold box having a temperature regulating mechanism connected thereto. Enclosed in the cold box is a filter holder connected between first and second cylinders. The filter holder has a housing divided into two parts which are joined together by a quick attachment and release mechanism. The mechanism permits a calibrated filter to be inserted into or to be removed from the filter holder quickly and easily. The filter holder also has an inlet and an outlet with the inlet connected to the first cylinder and the outlet connected to the second cylinder. The first cylinder contains a free piston which separates a quantity of fluid which is present in one section of the cylinder from a pressurized inert gas which is supplied to an opposite side of the piston. By allowing the pressurized inert gas to impinge on the piston, the fluid is urged from the first cylinder through the calibrated filter.

Abstract: A transducer system that provides accurate measurements of a physical variable such as pressure for any one of a number of different transducers. Each transducer includes special calibration indicators for identifying any inaccuracies in its output signal, and monitoring and correcting circuitry is selectively attachable to any one of the transducers, to read the calibration indicators and apropriately adjust the transducer's output signal, thereby correcting for the identified inaccuracies.

Abstract: A device for the scanning of objects by means of ultrasound echography comprises a first ultrasonic transducer (10) which is connected to a transmitter stage (50) for the repeated transmission of ultrasonic signals and to a receiver stage (100, 200) for receiving the ultrasonic echoes which correspond to the most important obstacles encountered by the tramsmitted signals in their propagation direction, said receiver stage comprising a first, known processing circuit (100) and, connected parallel thereto, a second processing circuit (200) which consists of a series connection of a control circuit (210) for the automatic control of the gain as a function of the distance of the echoes, a correction circuit (220) for the correction of transducer diffraction effects, a selection circuit (230) for the selection of a narrow frequency band within the pass-band of the transducer which is centered around a frequency F.sub.

Abstract: The present invention relates to the calibration of a thermostat used for controlling the temperature of an oven. Calibration is provided for in the invention by two slots cut out in the oven wall or range faceplate through which screws pass to mount the thermostat to this wall or faceplate. Also passing through this wall or faceplate is the operating shaft of the thermostat to which the control knob will be attached. The screws further position an indicating dial. The screws may be loosened to allow the thermostat to be rotated relative to the oven wall. The indicating means is rotatable with the thermostat relative to the oven wall. A reference point is provided on the oven wall so that the amount of recalibration is readily determined. The present thermostat provides a novel calibration arrangement.

Abstract: A fusible solder temperature sensor adapted for use with a trapped fluid pressure header alarm system. The sensor includes an insulating plastic fitting having threads at one end and a bore therethrough for connection to and fluid communication with the header system. A brass tube is connected at one end to the other end of the plastic fitting for fluid communication therewith. The other end of the brass tube is closed by a bronze closure disc attached thereto by fusible solder responsive to ambient air or other gas temperature above a determined level. When the ambient temperature reaches the determined level, the solder melts, releasing the closure disc from the tube, thereby releasing pressure from the alarm system to generate an alarm signal or the like.

Abstract: A rotational viscometer or tapered bearing simulator for testing motor oils and other fluids has a stator, a matching rotor fitting into it, and a drive shaft extending axially from the rotor. The shaft is direct-driven by a multispeed synchronous AC motor mounted on a low-friction turntable free to rotate over a limited arc. Torque experienced by the turntable is measured by a strain gage. The turntable rests on a platform which is vertically adjustable by and cantilevered from a fine screw-equipped elevator bracket. For temperature control, the stator is embedded in thermally insulating material and surrounded by an electric heating coil and a passageway through which air may flow. The stator and rotor have closely matched parallel surfaces produced by fine grinding. The rotor may have flats modified with a small fillet to entrap any minute particles in the test fluid. A pre-load assembly including weights applies measured torque to the turntable to calibarate and help stabilize the instrument.

Abstract: The disclosure is drawn to a statc pressure unit having a circular dividing fitting with two silicon strain gauges glass bonded thereto. The strain gauges are located to place one strain gauge in tension and one in compression when the fitting is pressurized. One of two embodiments may be employed. In either case, one strain gauge is positioned in tension symmetrically across the center of the fitting. The other strain gauge is placed so that it is in compression.

Abstract: There is provided a multirange, variable capacitance pressure transducer by bonding a diaphragm plate that is conductive between a pair of insulating plates with the diaphragm plate having a plurality of cavities provided on each side so that diaphragm deflection areas of different sizes are defined. The surfaces of the pair of plates in the cavities are covered by a conductive coating so that the coatings form capacitors with the deflection areas. A fluid communication path is provided to each cavity so that the pressure difference to be measured is placed across the deflection area. Electrical connection is made to selective combinations of said capacitors to provide pressure transducers for a number of ranges in one unit.

Abstract: Sources which emit tracer gas at a known constant rate are positioned throughout a building. Samples of air are collected in selected rooms with constant rate adsorbent samplers. Samplers are analyzed in a laboratory to determine the tracer gas concentration during the period sampled, which concentration is compared to the known volume of the building to determine air infiltration rates. The tracer gas emission rate is rendered independent of room temperature by allowing the gas to escape through specially designed orifices which automatically open and close in response to changes in temperature. In one design, an orifice is formed in a material which expands and contracts with variations in temperature surrounded by a second, less elastic material. In another design, the area of an orifice is changed by a needle valve imbedded in a material which expands and contracts with temperature variations to move the needle in and out of the orifice.