The residual strength of electricity poles is determined by the deflection of the poles under a pre-determined applied load. The load is applied by an extensible ram which has a foot secured to the base of the pole by a chain and a head plate with teeth which engages the sides of the poles. A preset hydraulic pressure is applied to the ram by a manual pump and the deflection if measured by strain gauges mounted on a support frame. The load deflection data are fed to a programmed computer which c...

Electrically conductive work pieces such as steel tubes or pipes are tested by means of a transducer comprised of a row of magnetic pole pieces through which a dc flux pattern of alternating polarity and direction is set up along a line of pole extensions and through which bidirectional ac ultrasonic transmission takes place to discover defects which return ultrasonic pulses.

A aqueous system for testing magnetizable articles is provided by a master based slurry of magnetic particles including a corrosion inhibitor, surface tension adjusting agent, an antifoam agent, a viscosity adjustment element, and a buffering element to assist in the corrosion resistance.

A method and apparatus for testing geophones is provided which utilizes the levitate waveform produced by the geophones upon removal of a levitate current. The levitate waveform is integrated to give an integral value which is proportional to the number of properly functioning geophones in a geophone array, for example.

A testing adapter for the contacting of conductor plates for the purpose of their testing includes a plurality of metallic resilient contact pins. Each of these pins includes a cylinder in which a piston of a piston member is received for axial sliding. The piston member extends beyond a cylinder jacket of the cylinder and passes through a bore of a rear guiding plate of the testing adapter. A helical compression spring is arranged on that region of the piston member which extends beyond the cyl...

A multimode testing device is disclosed for automatic testing of a threaded feature on a workpiece, comprised of a housing mounting a forward extending probe tip having an outlet supplied with air pressure via internal passages in the housing. In the first test mode, an obstruction test is made to detect the absence of the threaded feature or the presence of a broken tool, the obstruction test made by advance of the probe tip into the threaded feature. A contact of the probe tip with an obstruct...

Measurement of the ionic value X of a solution of a polyelectrolyte after shearing, for instance by a rotating blade, and/or measurement of the ionic value Y of a solution of polyelectrolyte before shearing, and especially the difference between t he values X and Y, gives a useful indication of the degree of cross linking of the polyelectrolyte and so can be utilized to control the manufacture of the polyelectrolyte, for instance drying conditions, or the storage or use of the polyelectrolyte, f...

A device for the application and recording of written tests such as word or idea association; question and answer; evocative or suggestive tests; aptitude etc. Pre-printed tests on paper rolls are inserted into the machine and the tests sequentially appear in a slot or window which remains open for a predetermined length of time during which an answer may be written on the test paper. A timer control adjusts the timing for the slot opening and closing. A control button allows an examinee to move...

The strength of a brittle material, such as concrete, is tested by applying opposing forces on a ring of predetermined dimensions on the surface of the material and an area which is within the material and smaller than that of the ring, the forces being applied in the sense to pull out material against reaction on the ring. In practice the ring is defined by an annular member disposed on the material surface, and the small area by a boltlike insert which can be of simple unitary form embedded in...

A small segment is sheared from the end of a cast iron pipe and examined for cracks. An uncracked specimen indicates ductile pipe, whereas a cracked specimen indicates that the pipe does not meet American Standards Association standards.