Abstract: The gas-sampling apparatus comprises at least two sampling probes at each sampling location and at least one sub-assembly for filtering the gas samples at each sampling location. A unit for processing and analyzing the gas samples is connected to all the sampling probes and is located as close as practicable to all the sampling locations.

Abstract: A testing apparatus for arrows is disclosed. The apparatus is made up of a stand with a v-block on it. The v-block is adjustable up and down on the stand and an arrow tip support is rotatably supported on the stand it is driven by a motor with a speed control so that an arrow leaning against the v-block and its point resting on the tip support is rotated at an optimum speed so that it can be visually checked for broadhead alignment, nock alignment, and arrow straightness.

Abstract: In the analysis of rock ahead of a working face a probe is pushed along a borehole formed in any desired direction in the rock and data produced by the probe is logged for later analysis, or for in-situ analysis. The probe may produce multiple logs. The data logged includes lithological information on the rock and the angular direction of the borehole. The presence of fluids, such as noxious gases, in the borehole can simultaneously be detected.

Abstract: An automatic on-off valve for use with a pneumatic micrometer connected between the main body of a pneumatic micrometer and its measuring head for economizing the consumption of pressurized air includes a valve body having, between an inlet and an exit thereof, a main flow passage to be opened and closed by a valve member and a sub-flow passage always open with a slight gap. The valve member is automatically turned on or off by the back pressure difference at the measuring head between a measuring state and a not-measuring state. The total open cross sectional area for both of the flow passages are set to be 6 to 9 times as large as the cross sectional area for a flow passage which is formed between a nozzle of the measuring head and an object to be measured upon the object being placed to measure the maximum gap, whereby a measuring error resulting from the disposition of the automatic on-off valve can be minimized within an allowable range to thereby maintain the measuring accuracy a desired high level.

Abstract: A sensor probe is affixed at an end of a probe adapter which includes an extended portion which is radially flexible but torsionally stiff. A guideway which passes from an accessible location in a machine to the vicinity or the target surface guides the sensor probe to its operative location. Final positioning of the sensor probe is attained by abutment of a forward shoulder on the probe adapter with an abutment shoulder fixed to the machine a predetermined distance from the target surface to be monitored. This permits removal and replacement of sensor probes without requiring final adjustment of the replacement sensor probe. One embodiment of the invention permits final adjustment and locking of the sensor probe in position after full assembly of the bearing housing by providing a star wheel on an adjustment sleeve which, after adjustment is locked in position by a setscrew.

Abstract: A sampling system for stool analysis provides an elongated handle and a cylindrical coring device, said handle including means for releasibly holding said coring device. The coring device is inserted into the stool to collect a representative sample. The sample is removed for analysis, as required.

Abstract: The present invention includes a ferrous conduit mounted over an aperture in the pipeline, launch tube, or receiver through which the pigs pass. A non-magnetic sensing rod is reciprocally mounted within the conduit with the rod extending through the aperture and into the pipeline. That end of the non-magnetic sensing rod extending into the pipeline has attached thereto a head with a lower rounded surface for engaging the pigs. A non-magnetic end cap is secured to the upper end of the conduit and a non-magnetic magnet holder with a magnet disposed therein are mounted on the upper end of the rod. A magnetically operated switch is mounted adjacent the non-magnetic cap. The conduit shields the magnetic field of the magnet from the switch until a pig is detected. Upon the engagement of the head with a pig, the magnet on the upper end of the sensing rod moves above the conduit inside the non-magnetic cap and sends a magnetic flux to the magnetically operated switch.

Abstract: Methods and apparatus for applying calibrating gas to a combustible gas sensor, in which a calibration enclosure is formed mechanically upon application of pressurized calibration gas.

Abstract: Plunger operated pipet operable to execute successive fluid pickup and fluid discharge operations or strokes. A signalling system is provided which signals the occurrence of the second or fluid dispensing stroke of the plunger movement.

Abstract: Equipment for testing or test sampling liquid metal by introducing a protection sleeve (3; 3'; 3") together with a testing or sampling means (2; 11) provided inside the protection sleeve. The protection sleeve comprises a thermoinsulating tube (3; 3'; 3") made of synthetic amorphous mineral fibers, preferably fibres of diabase type and having a sagging point of 1,000.degree.-1,200.degree. C. according to the standards of the Swedish Institute for Materials Testing, and bound with an evenly distributed binder comprising or including among other things a binder component of organic type, for instance a thermosetting resin like phenol resin, carbamide resin or melamine resin and/or substances incorporated in the fiber material, for instance crystal water containing salts or carbonates which at the temperature of the liquid metal spontaneously and successively emit gases.

Abstract: A remotely controlled system for mechanically positioning an aircraft airflow vane for the purpose of calibration wherein a stepper motor drives the vane to a predetermined position in response to electronic system control disposed at a point remotely located with respect to the aircraft airflow vane.

Abstract: Both manual and automated pipetting apparatus for collecting and dispensing controlled amounts of a given specimen are disclosed herein along with their methods of operation. Each of these apparatus utilizes a pipetting device including a stem which carries a replaceable tip and each device is designed so that a tip, once used, can be automatically removed from its associated stem. Each apparatus disclosed also includes a particular arrangement for placing a new tip on a given stem and each utilizes a specific arrangement for collecting used tips and for cleaning certain components of its pipetting device of specimen residue.

Abstract: A molten metal sampler is disclosed which includes a mold cavity defined by a steel sleeve having an accurately machined and polished interior surface and a steel disc defining one end of the sampler remote from the sample entry passage by a steel disc having a projecting bolt which becomes imbedded in the sample as it cools and in which the steel disc provides a laterally extending annular flange on the sample so that it can be suspended from a collar for a jominey test. The sleeve and integrally formed flange eliminate the need to machine the sample to prepare it for testing.

Abstract: A sampling valve having a stem which reciprocates between a liquid filled chamber and a vaporizing chamber is provided with a stem seal comprised by a thermoplastic bushing fitted to the valve stem with an interference fit. The bushing is encircled by a compression band exerting a radial compressive force and is mounted in the valve body with end clearance to avoid axial compression.

Abstract: A creosote buildup detector utilizes a change in temperature between two sensors. The temperature between the two sensors changes as the creosote builds up. This change in temperature is established by providing an electric heater to heat one of the sensor supports. A temperature comparator senses the change in relative temperatures between the two sensors and annunciates when a sufficient creosote buildup has occurred to indicate that cleaning the chimney is necessary.

Abstract: Apparatus for automatic buretting comprises an automatic buretting actuator (1) and a burette unit (2) in the form of two separable subassemblies. The burette unit (2) is removably mounted in the actuator (1) even when filled, while remaining closed in a sealed fashion and is constituted by a burette (3) connected at its lower end to a valve (4) with three passages and three positions, provided with an actuator (5). The automatic buretting actuator (1) is constituted by a stepping motor (9) provided with a connection (10) for operating the valve (4) of the burette unit (2). An electronic control assembly (13) has a control and display panel (14). A lever (15) provides quick release of the burette unit (2).

Abstract: The invention pertains to a valve particularly suitable for sampling internal combustion engine lubricating oil while being used within the engine and consists of a valve body placed within a pressurized oil conduit. The body includes an orifice having a valve element movable between open and closed positions by a sample collecting receptacle wherein one hand operation is readily achieved. The valve element includes a proboscis suitable for piercing the sample receptacle diaphragm, and a spring produces a positive biasing force on the valve element toward the closed position. A removable cover protects the valve element and proboscis when not in use.

Abstract: A gas sampling extractor for extracting a stack gas sample for analysis. The gas sampling extractor includes a filter housing and an eductor in combination with gas conditioning apparatus for sampling and conditioning the emission pollutant content of a gaseous medium in a stack prior to introducing the sample gas to a measuring instrument for further analysis thereof.

Abstract: A needle assembly for feeding a carrier gas into a sample vessel during the head-space analysis of a sample includes a lateral outlet passage for conveying the gas.

Abstract: A water level indicator for a pressure vessel is provided which employs a plurality of vertically spaced cantilevered mounted spring members. The free end of each spring member is connected to a depending float member. The float member has sufficient mass and density to depress its spring member when the float member is in a gaseous medium. The float member has sufficient buoyancy to elevate its spring member when the float member is in a water medium. One or more strain gauges is secured to each spring member to indicate the instantaneous position of the spring member and thereby provide an indication of the instantaneous water level.