Abstract: A flow-sensing probe adapted to be mounted in a conduit for indicating the flow rate of a fluid passing through the conduit. The probe has forward openings facing in the direction of fluid flow, and rear openings disposed at an angle of about one hundred and ten degrees with respect to the forward openings. Pressures sensed by the forward and rear openings are used to indicate volumetric flow by using a flow coefficient that is independent of Reynold's number.

Abstract: A tension indicator used on a guy line system of an inclined oilwell derrick, comprising a hydraulic compression load cell, a pair of interlocking U-shaped yokes housing the load cell between the bases of the U-shaped portions, a plunger connected to the load cell bearing against the base of one interlocking yoke, the load cell bearing against the base of the other interlocking yoke, a walking load binder mounted on the outer end of a first interlocking yoke and providing an initial tension load to the guy line system, a threaded nut and screw adjustment assembly affixed to the outer end of a second interlocking yoke and providing a finer adjustment of the tension provided by the walking load binder, a pair of attachment hooks rotatably mounted on the outer ends of the tension indicator device for inserting the tension indicator device between a set of intermediate chains connected in a guy line, and a calibrated pressure gauge directly attached to the load cell; whereby the interlocking yokes transfer a line

Abstract: An electromagnetic flow meter includes an electromagnetic flow meter body having a connecting end for connecting to a pipe in which fluid to be metered is conducted, and a grounding device held between the connecting end of the body and the pipe, the grounding device having an annular frame of an insulating material having an inner periphery defining a central opening and an outer periphery and a grounding wire disposed at least at the inner periphery to be exposed to the central opening of the annular frame.

Abstract: A constant strain load cell for measuring forces applied to the cell which includes a parallelogram shaped body having fixed and movable end constraints interconnected by upper and lower flexures with flexing areas at the opposite ends of the flexures functioning as sensing beams and on which strain gages are mounted. The flexing areas are formed so that bending stresses caused by applied loads are maintained constant over the flexing areas or regions. The load cell can be easily machined or extruded and the capacity can easily be varied dependent only on the overall size.

Abstract: A method and apparatus for measuring the thickness of an ice sheet floating on a body of sea water is disclosed. The electrical inductance of a coil embedded in an ice sheet is measured. This inductance is solely dependent on the geometrical factors of the coil and is minimally affected by variations in salinity of the sea water on which the ice sheet is floating. The measured inductance is the actual inductance only of the part of the coil in the ice. The other part of the coil, protruding in the sea water, is shorted out by the sea water. Hence, the thickness of the ice sheet is directly related to the measured inductance.

Abstract: The present invention discloses a temperature sensor which has a very rapid response to changes in fluid temperature. The configuration of the sensor is especially adapted for use in oil and gas wells to protect electrical components from mechanical damage. The electrical circuit provides a wide range of temperature readings with a high degree of accuracy.

Abstract: The present invention relates to a method for rapidly determining the insulation resistance characteristics of bismuth-containing ceramic capacitors, and more particularly to ceramic capacitors incorporating a barium titanate dielectric. The test is predicated upon the discovery that capacitors of the type described and having satisfactory insulation characteristics exhibit a high percentage of inter-granular fracture. Capacitors of identical composition and apparently identical physical characteristics which, when fractured, evince a high percentage of trans-granular fractures have been found to exhibit unacceptably low insulation resistance characteristics.

Abstract: A support adjacent to the lower end of the pedestal for a barbecue engages under a bottom edge portion of the barbecue fuel tank such that the tank tends to tilt away from the pedestal by gravity. A gauge member connects to the top of the tank and passes through an opening in the pedestal to protrude out the opposite side. A spring provides a force opposing the tendency of the tank to tilt so that the degree of tilt is determined by the weight of the tank which in turn is determined by the amount of fuel in the tank. Thus, by observing the amount by which the gauge member protrudes through the opening in the pedestal, there is provided an indication of the fuel level in the tank.

Abstract: An apparatus for the pressure testing of tubing has two support members which can be urged towards one another, one of which forming a counterbearing for the tubing and the other having a spigot with a conical face which is at least partially insertable in one end of the tube under test to seal it. The support member with the spigot is connected to an actuating spindle which is coaxial with the axis of the spigot and between the actuating spindle and the support member there is a pressure drive including a cylinder and a piston which is connected in tandem with the actuating spindle to bring the spigot into engagement with the tube. The spigot has a duct through which a test medium can be introduced into the tubing.

Abstract: A Doppler flowmeter impulses an ultrasonic fixed-frequency signal obliquely into a slurry flowing in a pipe and a reflected signal is detected after having been scattered off of the slurry particles, whereby the shift in frequencies between the signals is proportional to the slurry velocity and hence slurry flow rate. This flowmeter filters the Doppler frequency-shift signal, compares the filtered and unfiltered shift signals in a divider to obtain a ratio, and then further compares this ratio against a preset fractional ratio. The flowmeter utilizes a voltage-to-frequency convertor to generate a pulsed signal having a determinable rate of repetition precisely proportional to the divergence of the ratios. The pulsed signal serves as the input control for a frequency-controlled low-pass filter, which provides thereby that the cutoff frequency of the filtered signal is known. The flowmeter provides a feedback control by minimizing the divergence.

Abstract: A load sensing probe for monitoring working forces in compressive elements such as found in presses and other machine tools is disclosed. The probe has an elongate configuration which allows it to be mounted at a point remote from its load sensing end and enables it to be conveniently used with a plurality of similar probes in relatively confined spaces. A split plug includes a slot defining two sensing arms, which arms are pushed outwardly into engagement with an accommodating cavity formed in a back-up member of the machine tool. The probe is sensitive to relative closing movement of the cavity caused by compressive strain in the back-up member.

Abstract: A process and a portable apparatus for performance testing of boat motors, especially with outboard drives. A brake disc is rotatably journalled in a hub of a supporting element which carries brake callipers and a lever arm, at the outer end of which a force-measuring instrument is arranged and is tensioned between the lever arm and a resistance in the form of an arm which can be clamped onto the cavitation plate of the drive. During performance testing of a boat motor, the propeller is removed and in its place the brake disc is non-rotatably mounted on the propeller shaft. The force-measuring instrument is connected to a display which gives directly the braked torque.

Abstract: An apparatus for measuring the burning rate of solid propellants utilizes a homodyne radar to illuminate the propellant grain from a non-burning surface to obtain a distance measurement of the dimensions of the burning mass.

Abstract: A pulp sampling device for combining pulp and water to form a pulp suspension and circulating the suspension until an exact volume of a sample of the suspension has attained a targeted meter reading of consistency and concentration which volume of pulp can be used for Kappa number determination or like tests.