Abstract: A marine speed log for providing an indication of the relative velocity of a vessel through water and an indication of the forward or reverse direction of travel. An output indication of total distance travelled can also be provided. The speed log is operable in both salt and fresh water without any change in calibration and incorporates a transducer having an air core. The speed log provides high sensitivity and high rejection of noise.

Abstract: A test probe for monitoring the level of liquid in a storage container, especially of a flammable liquid, has a guide tube which is inserted through and secured in the threaded hole of a cover of the container. The probe is provided with a magnetic indicating system mounted in part on a bearing which surrounds the tube within the container. Magnetically coupled to the bearing and movable along and within the tube is an electrical contact carriage which makes contact with fingers provided on rolled-on metal tracks provided on non-conductive profiled strips located at least in part in the tube. The strips are reinforced by profiled rails which are located in the tube.

Abstract: A torque measuring device has a torsion bar with effective length adjustable to show different energy absorption capability. One end of the torsion bar's effective length is held stationary while a torque from a torque controlled winding tool is applied to the other end through a one direction of rotation clutch. The actual torque applied to the torsion bar is measured after which the torque on the bar is released.

Abstract: A pipetting device serves to hold and actuate a detachably mounted syringe having a syringe body and a piston. The device is provided with means for adjusting the volumetric capacity of the syringe. The device comprises two racks and a pinion which is in mesh with both said racks and operable to move them in mutually opposite directions. The racks are connected to respective sliders, one of which is connected to a rod for actuating the piston of the syringe. A single actuating lever is provided for actuating the piston and is connected to the sliders by an actuating mechanism, which comprises a positively actuated transverse slider, which constitutes a stop member and in response to an automatic resetting of the actuating lever to its initial position is moved from the path of one of said sliders into the path of the other.

Abstract: An apparatus and method for withdrawing fluid such as oil from an oil pipeline comprising 2 collection apparatus, an alternate one of which is at all times connected to the pipeline connecting oil, whereby while one is collecting oil, the oil in the other collection apparatus is being mixed and then is emptied ready to receive oil.

Abstract: An automatic pipe testing unit adapted to be mounted on a goose-neck trailer and comprises a longitudinally extending rectangular tubing main trailer frame. A test fluid holding tank mounted on the frame has a screened opening to receive test fluid which is drained from each joint after it has been tested, so that the fluid can be continuously recirculated. Also included are hydraulically operated two lift arms and two pipe advance arms, the lift arms each having an integrally attached bevelled finger plate onto which a plurality of pipes can be rolled. The lift arms lift the pipes from one point to a slanted storage area on the top of the unit and herefrom automatically by operation of the hydraulic pipe advance arms, the pipe to be tested is advanced into a pipe gripping vise for testing. The hydraulically operated pipe advance arms can then be operated to eject the pipe therefrom into another area for draining the pipe of all of the test fluid so that the test fluid can be recirculated for subsequent use.

Abstract: An energy loss detecting apparatus for measuring the rate of flow of the vapor phase of a bi-phase fluid flow, in the presence of an unknown quantity of the liquid phase, by separating the vapor phase from the liquid phase and producing a signal representing the vapor phase flow rate. The apparatus includes a hollow separator casing provided with a tube communicating with at least one of the inlet opening and outlet opening of the casing and facing thereinto. A wall seals the interior of the tube from the interior of the casing except at reduced diameter holes in the wall, the diameter of the holes being less than the inside diameter of the tubes at the wall. Energy loss due to a faulty steam trap is measurable by interposing the vapor flow rate measuring apparatus in a steam line between a steam consuming device and the steam trap.

Abstract: An improved apparatus for supporting a sensor housing on a surface to which vibrations are applied having mounts fixedly coupled to the surface and brackets fixedly coupled to the housing with a vibration isolation material supported between the mounts and the brackets to improve the vibration isolation to the housing by placing at least one half of the material of the apparatus in compression responsive to linear vibrations along at least two of the axes of the housing.

Abstract: A liquid meter including a freely rotatable impeller driven by a constant speed drive. Liquid to be metered is introduced as a flow against, and accelerated by, the impeller. The energy necessary to accelerate the liquid is monitored to determine liquid flow. Preferably, the impeller is driven through a magnetic coupling which facilitates isolation of at least large portions of the drive from the liquid flow. One preferred embodiment employs a pair of spring coupled shutters with one shutter being magnetically coupled to the impeller. The displacement of the spring is dependent on liquid flow with that displacement being determined by photoelectrically monitoring the relative positions of the shutters. The power necessary to maintain the drive at constant speed may also, or alternatively, be monitored to determine liquid flow.

Abstract: In accordance with an illustrative embodiment of the present invention, a hydraulic pipe testing tool comprises a body member carrying longitudinally spaced, normally retracted packing and anti-extrusion members that are expanded into sealing and abutting engagement with the surrounding walls of a well pipe being tested. The anti-extrusion member includes inwardly biased arcuate segments that carry gripping elements which bite into the pipe to anchor the tool against longitudinal movement during testing operations.

Abstract: The present invention relates to a control system for a testing device for the automatic transmissions used in automobiles, and comprises a torque controlling feedback loop for controlling the torque applied to the input shaft of the transmission under test, and a speed controlling feedback loop for controlling the speed of the output shaft of the transmission under test, whereby the circumstances in an actual automobile application can be accurately and easily simulated to allow realistic testing of the automatic transmission.

Abstract: A permeation testing apparatus for determining the permeation of a chemical through a test material. The testing apparatus includes a permeation cell comprising two units, each constructed of a block of relatively chemically inert material which may be placed in intimate contact. One face of each said block has a shallow cylindrical well, that is referred to as the "challenge side". The opposite face of the block has a conical well that is referred to as the "collection side". Two such blocks, or permeation units, are positioned face-to-face ("challenge side" to "collection side") and constitute one permeation cell. The material to be tested is positioned between two permeation units thereby separating the "challenge side" from the "collection side". Four ports are provided perpendicular to the axes of the permeation cell; i.e., an inlet and an exit port for each of the two permeation units. Several permeation units may be stacked, with each interface providing a permeation cell.

Abstract: A device for the capacitive measurement of liquid levels, particularly in an automobile tank has a measurement sensor with measurement electrodes arranged concentric to each other forming a measurement capacitor, the space between the measurement electrodes communicating at a variable height with the liquid to be measured, and a channel within an inner of the measurement electrodes through which the liquid is drawn up. Compensation electrodes form a compensation capacitor in a suction path of the liquid with a constant level of the liquid by which the influence of different dielectric constants of the liquid on the result of a measurement is compensatable in an evaluation circuit to which the measurement capacitor and the compensation capacitor are connected. A sump vessel has a bottom disposed lower than an upper opening of the channel within the inner measurement electrode. The compensation electrodes are arranged in the sump vessel.

Abstract: To test a shutdown steam condenser for tube leakage, the pressure in the water boxes is reduced below atmospheric pressure while the steam casing is open to atmospheric pressure, and leakage of air into the boxes is used as an indication of the tube leakage. The leakage is preferably indicated with a soap bubble test by a workman inside the box. Although the entrance manholes to the water box are substantially sealed during testing, for safety protection one can be sealed with a U-tube water seal so that it will be broken automatically by an excessive underpressure.

Abstract: The testing instrument for pipes or other cavities to be tested as to tightness includes an at least partially conical rubber plug, at each of the opposite ends of which supporting plates are provided. A pipe which extends through the rubber plug is rigidly connected to the supporting plate at the end having a smaller diameter and is passed through the other supporting plate so as to be movable. A protruding section of the pipe is provided with a thread and a pedestal is screwed to the threaded section. Two eccentric levers are tiltably mounted to the pedestal diametrically opposite each other and rest on the supporting plate at the larger diameter of the rubber plug. A crown member is provided on the pipe, to which a CO testing apparatus is connected. Variations of the rubber plug are disclosed, with which various openings which are difficult to seal can be securely sealed.

Abstract: A quad-gate demodulator circuit for capacitive transducers in which analog gate devices replace the diodes of a prior art diode-quad bridge circuit. This improvement eliminates the temperature and ratiometricity errors associated with the diode-quad circuit.

Abstract: A debris detection system for detecting debris in a fluid flow in which both a primary and a secondary fluid flow from a fluid reservoir are maintained. The fluid reservoir is situated downstream of the system being served and receives the debris from the system being served. Within the reservoir the primary fluid flow is shielded from all but the colloidal debris received. All non-colloidal as well as colloidal debris is diverted to the secondary fluid flow where the amount and rate of debris accumulation is detected.

Abstract: It has been found that the soldering properties of a wave soldering system can be quantitatively determined by measuring the wickability of the molten solder of the solder bath beyond the areas of direct immersion into the molten solder bath of a solder wave. The test is conducted by providing a test board having a pair of parallel strips of a solderable material such as copper. One of the parallel strips is formed in a continuous length. The other of the parallel strips is formed with discontinuity in the solderable material at regularly predetermined intervals along the length thereof. When conducting the test method of this invention, the test board is partially immersed into the solder wave in the same manner as a printed circuit board assembly, with the parallel strip being in alignment with the machine direction of the wave soldering apparatus. The test board is then removed from the solder wave. The point of maximum direct contact with the solder of the wave is determined from the discontinuous strip.

Abstract: A sliding film rheometer for measuring the viscosity of a molten polymer comprising a measuring cell containing a molten polymer, the cell having a rectangular slit through which is passed a rectangular shaped tape at a constant rate and strain gauges connected to the measuring cell for measuring the shear stress and normal stress produced by pulling the rectangular shaped tape through the molten polymer and through the slit from which the viscosity is calculated. The viscosity measurement provides useful data for obtaining optimum extrusion of said molten polymers.

Abstract: A force transducer for producing an output signal proportional to the magnitude of an input force having a force receiving base cantilevered from a fixed base through a leaf spring flexure assembly which is provided with means for anchoring the opposite ends of a removable spring flexure in the fixed and force receiving bases respectively to thereby adjust the transducer to a predetermined force range.