Abstract: An article (40), such as a piece of manufacturing tooling, is modified prior to use by treating a portion of its surface (38) to be worn so that the treated surface worn more than a preselected amount has a different appearance than the treated surface worn less than the preselected amount, using a treatment process in which the treated surface is at least as wear resistant as the untreated surface. In one approach, the surface (38) is treated by implanting ions to a preselected depth. The ions are chosen so that the substrate has a different color at depths less than the preselected depth than does the substrate at depths greater than the preselected depth. After wear, the treated surface is visually inspected for color variations that indicate wear to more than the preselected depth. The surface treatment can also be accomplished by ion implanting or ion beam mixing a previously deposited surface coating.

Abstract: A machine for testing a centrifugal load of a bearing including an outer race member, comprising a supporting frame including a sun ring, and a rotational main shaft. Said rotational main shaft includes mounting portions for mounting the bearing to be tested. Said mounting portions includes a mounting shaft for mounting the bearing to be tested and a supporting bracket for supporting said mounting shaft. Said mounting shaft is arranged in said supporting bracket in parallel with the rotational main shaft in such a manner that a part of an outer peripheral surface of said outer race member is projected radially outwardly from said supporting bracket. An inner peripheral surface of said sun ring is used as a track to be rolled with the outer race members of said respective bearings to be tested. The bearings are rotated around the the rotational shaft and around their own axes along the inner peripheral surface of the sun ring.

Abstract: An apparatus for testing several physical properties of pharmaceutical powders, which apparatus includes a frame having a ram linearly movably supported thereon and driven from a microstepping rotary drive motor. The ram, through a first load cell, cooperates with a selected one of two different tablet supporting head assemblies which removably mount of the frame for respectively testing tablet hardness and tensile strength. The frame also mounts a powder flow test arrangement which includes a bed stationarily supported on the frame for receiving a layer of powder, and a sled which rests on the powder layer and is freely horizontal movable relative to the bed. The sled is coupled through a generally horizontal tension member to a second load cell which is mounted on the ram independently of the first load cell.

Abstract: The invention provides a friability testing apparatus which has an electrically excitable vibrator (10, 12) for vibrating a capsule (14) containing material to be tested. The apparatus includes a microprocssor (20) which proivdes an output waveform with a frequency which is determined by an oscillator (22). The output of the microprocssor drives a power amplifier (18) which controls the vibrator. An accelerometer (16) supplies signal to the microprocessor, so that the operation of the vibrator is maintained within predetermined limits.

Abstract: An apparatus for measuring grindability of a powder material comprises a chute for feeding particles to be measured one at a time, a pair of opposed rolls arranged under the chute so as to receive the particle from the chute in a gap between the opposed rolls, one of the opposed rolls having a stationary shaft which is rotatably supported at a fixed position and the other roll having a movable roll shaft which is rotatably supported on the upper end of an L-shaped arm which is pivoted at the corner thereof to a frame, a rigid base opposed to the other end of the L-shaped arm, a device for adjusting the level of the rigid base, and a load cell interposed between the other end of the arm and the rigid base.

Abstract: An apparatus for evaluating the wear resistance of a weatherstripping of the kind applied to a motor vehicle window frame wherein a window can moveably engage the frame via the weatherstripping, the weatherstripping including a lubricating material, such as flocking, adhered to a base material, whereby the moveable engagement can cause wear of the adhered lubricating material. The apparatus includes first structure for holding a test strip of weatherstripping, a wand having a tapered nose portion, and second structure, coupled to the wand and first structure, for imposing a plurality of strokes of the wand nose portion upon the test strip. Third structure, coupled to the second structure, is for adjusting the amount of force with which the wand nose portion is sought to be imposed upon the test strip during the plurality of strokes. The wand is a thin, flat and elongate glass part having a tapered nose portion.

Abstract: A method of evaluating the start/stop lifetime of a thin-film magnetic medium having an overcoat formed by sputtering a carbon-containing overcoat on a magnetic-film substrate. Resistance to erosion of the medium is evaluated by the time required to wear away the overcoat during a high-speed abrasion treatment. Lubricity is measured either in terms of the coefficient of friction of the disc, or in terms or surface hydrophobicity, as gauged by one of a number of measurable surface properties. The method allows for rapid assessment of disc wear properties, and can be used to optimize sputtering conditions required to achieve selected hardness and lubricity properties in a disc overcoat.

Abstract: A diagnostic filter device for monitoring electrically conductive and semiconductive particles entrained by a fluid, composed of:a filter element (4) disposed to receive the fluid and to permit passage of the fluid while retaining particles entrained in the fluid;a component (8) disposed for producing an alternating electromagnetic field which extends across at least one region of the filter element (4); andan eddy current detecting instrument (12) connected to the electromagnetic field producing component (8) for detecting the influence on the field of particles in the filter element region.

Abstract: A working amount detecting marker formed by laminating first and second marker layers each having a predetermined shape when seen from above. Two sides contouring the respective marker layers intersect each other at a point located at a specified position where working is to be completed. When the portion of a magnetic head to be opposed to magnetic recording media is formed by grinding or grooving, the sectional configuration appears on the ground surface, indicating whether the amount of grinding or grooving is insufficient or excessive. The point of intersection, when appearing on the ground surface, readily indicates completion of grinding or grooving with high accuracy.

Abstract: A tribological head-disk interface testing system for testing commercial head-disk assemblies in an accelerated fashion to determine wear life, the system comprising an interface stress device disposed on a disk with a wear tester, the interface stress device having a semispherical crystal pin mounted on a slider. Piezoelectric crystals are mounted on the slider.

Abstract: An abrasion-proof tester for analyzing granularity of abraded powder includes abrasive material adhered on a abrasive plate fixed on a driving shaft of a variable speed motor is closely contacted with test pieces supported by supporter which is resiliently supported and uniformly pressed by compression spring and multiple stage granularity measuring device oscillated by oscillating plate is mounted at a side of said abrasive plate which is heated by electric heater controlled by digital temperature sensor and chromel-alumel thermocouple.

Abstract: A pin-on-disk type wear testing device which has a non-contact type displacement gauge that moves integrally with the pin type testpiece sliding against the disk type testpiece, so that the said pin-on-disk type wear testing device of the present invention can accurately measure the displacement of the pin type testpiece with respect to the disk type testpiece without being affected by the waving motion of the disk type testpiece, the thermal expansion of the whole device, and other factors, thus making it possible to accurately measure the amount of wear of the pin type testpiece.

Abstract: An anodized aluminum part is wear tested by forcing a ball point stylus against the part and rotating the part about an axis spaced from the stylus. A turntable driven by a motor rotates the part at a desired speed. Weights are used to determine the force on the stylus. A layer of nonconductive oil on the test area helps clear wear debris from the circular wear path due to the motion of the ball through the oil. An ohm meter is connected between the stylus and the aluminum substrate to monitor electrical continuity and thus detect when the stylus wears through the anodized coating. The time required to achieve the wear through is a measure of the wear resistance of the coating.

Abstract: A method of manufacturing state transducers for mechanical components intended to be subjected to wear, mechanical and/or thermal loads, especially state transducers for tools. The invention is characterized in that electric conductors and, where appropriate, electronic circuits (9) of microscale for measuring wear, mechanical and/or thermal loads are applied on the surface of the component (11), and a protective layer (10) is applied upon at least portions of said circuits (9) and conductors, where said conductors, circuits and said protective layer (10) are applied so as to constitute a unit atomic integrated with the mechanical component (11), which conductors and circuits are intended to be connected to a signal processing or corresponding equipment. The invention also comprises a mechanical component treated according to said method.

Abstract: Devices and processes for inducing fiber transfer in order to evaluate and analyze wear properties of materials. A second pad which carries a specimen of material or abradant orbits or reciprocates with respect to a first such pad. A drive means and control means allows the movement of the second pad to be precisely controlled, so that its period of orbit or reciprocation can be minutes long if desired, and can be stopped after a predetermined time or number of cycles, after one cycle, or at any fraction of a cycle or any desired point on the first pad. The device thus allows highly controllable conditions for inducing fiber transfer, so that highly accurate measurements of fiber transfer may be made and wear and durability properties of materials analyzed.

Abstract: Testing apparatus for simulating the behavior of contact moving under normal force loading in machine components with at least two test objects and at least one first test object performs a rolling movement with or without a superimposed sliding movement on a second test object, in which at least the first test object can be driven by means of an eccentric arrangement, the latter including a first short crank receiving at a substantially constant speed about a first spindle, as well as a second short crank, which is articulated to the first crank on a second spindle at a distance from the first spindle, together with a third long crank, which is articulated to the second crank on a third spindle at a distance from the second spindle and is provided with a spatially fixed spindle at a distance from the third spindle and the fixed spindle is connected in non-rotary manner with spindles of the test object.

Abstract: A device, for simulating temperature effects at the interface of a head-to-medium interface, is comprised of a unitary block of material which transmits radiation in the infrared (IR) region of the electromagnetic spectrum and which has a wear-resistant property substantially approximating that of the material of an actual magnetic head to be simulated. The unitary block is shaped to have (1) a first forwardly facing surface substantially approximating the dimensions and contour of the working surface of the head to be simulated, and (2) a second rearwardly facing surface substantially approximating the dimensions and contour of a light-transmitting surface of a positive spherical lens the focal plane of which coincides with the forwardly facing surface. Sapphire is selected as a material having a suitable IR-transmitting property and a wear-resistant-property commensurate with one wear-resistant properties of alloy and ferrite materials commonly used in the manufacture of a video magnetic head.

Abstract: A wind shear detection system compares air-speed with a composite signal derived from signals representative of longitudinal acceleration, normal acceleration, angle of attack and flight path angle to generate a shear signal. An enhanced version of the system is also compensated for roll angle, radio altitude and flap position. In a modified system, the accelerations are calculated along the velocity vector of the aircraft rather than along the horizontal axis to compensate for inaccuracies that could occur under extreme flight conditions such as high bank angle turns and dynamic maneuvers.

Abstract: A wear sensor provided with a block incorporating one or more optical fibers for indicating that wear has occurred to the block, on the basis of a fact that the fibers have been severed on account of wear of the block.

Abstract: Method and apparatus for measuring the cut resistance of flexible materials, such as films, fabrics, felts and papers. A flexible material is wrapped around a mandrel that is rotated at a predetermined speed. A cam attached to the rotating mandrel allows a cutting edge, such as a razor blade, to repeatedly fall on the material covering the mandrel. The cutting edge repeatedly contacts the material, in the same location and with the same predetermined force, until the cutting edge penetrates the material and makes electrical contact with the mandrel. When edge-to-mandrel contact is made, the rotation of the mandrel is automatically stopped. The number of rotations (i.e. cutting cycles) required to penetrate the material is noted and used as a measure of the relative cut resistance of the material.

Abstract: A novel apparatus for determining the relative hardness and abrasion resistance of industrial film coatings and linings is disclosed. In its preferred form, the apparatus comprises a rigid handle incorporating a pre-set angle between its flat lower surface and a flexible spring blade attached at one end to the handle, and a scoring stylus attached at the other end of the spring blade. By placing the bottom of the handle on the surface of the film coating or lining whose relative hardness and abrasion resistance is to be determined, the spring blade is caused to deflect and thereby exert a constant and predetermined force through the scoring stylus onto the film coating or lining. By drawing or pulling the handle across the surface of the film coating or lining while maintaining the lower surface of the handle in complete contact with the film coating or lining, the scoring stylus creates a scratch on the surface of the film coating or lining.

Abstract: According to the present invention there is provided a thermal barrier coating wherein multilayers of (I) a ZrO.sub.2 layer containing a luminous activator and stabilized by Y.sub.2 O.sub.3, CaO, MgO or a mixture thereof and (II) a ZrO.sub.2 layer containing a luminous activator different from that used in (I) and stabilized by Y.sub.2 O.sub.3, CaO, MgO or a mixture thereof, or a ZrO.sub.2 layer not containing a luminous activator and stablized by Y.sub.2 O.sub.3 are stacked, and the layers at least under an uppermost layer opposite to a base member to be protected have a total thickness sufficient for exhibiting a thermal barrier effect. The present invention has as its object to provide a thermal barrier coating which allows non-destructive testing to determine whether it has a thickness sufficient for themal barrier effect.

Abstract: Particulate material such as fluidized bed particles, catalytic particles, and particles used in mechanical processes are measured to determine their attrition rate by providing an apparatus comprising a generally cylindrical housing having a rotary impeller disposed eccentrically in the housing for continuously agitating and impacting a quantity of particulate material being measured. A screen is formed in a sidewall of the housing and a vacuum pump is operably connected to the interior of the housing through the screen for continuously withdrawing fines generated during the attrition rate measurement process. Periodic sampling of the quantity of fines withdrawn is used to measure the mass of fines withdrawn per unit time. An equal mass of makeup material is admitted to the housing chamber after each sampling step until an equilibrium attrition rate is determined.

Abstract: A method and apparatus for monitoring wear associated with a particular cyclically moving part in a machine, the machine comprising a plurality of moving parts and operating in a succession of cycles. Apparatus is provided for generating a first signal at a predetermined position and direction of movement of the moving part, for generating a second signal at a predetermined cyclic position in each machine cycle, for producing a third signal indicative of the interval of time between the first signal and the second signal, and for forming a comparison with a reference signal to determine the extent of wear associated with the particular moving part.

Abstract: An improved arrangement for measuring and controlling the wear of the first member which is subject to wear during frictional contact with the second member. The unique arrangement employs a simple process which allows a direct measurement of wear with a minimum expenditure. The invention involves a method of measuring the temperature which is generated in the first member or in the second member or in an adjacent member, which is representative of the above-mentioned wear which occurs during frictional contact, and an evaluation circuit for converting the temperature values into wear signals.

Abstract: A tester of resistance of separate batches of tablets to breakage including a revolvable cylinder revolvable around a central height axis that extends axially of the cylinder, cylindrical space formed therein being divided into separate spaces by dividing walls extending radially across a diameter of the inner cylindrical space and the dividing walls for each space having a radially extending concave surface along one radius and a convex surface along another radius such that in each of the separate spaces there is formed a scoop facilitating collecting and tossing groups of tablets as the cylindrical cylinder revolves, and the revolvable cylinder including an access opening-structure for separate insertion and removal of tablets from the separate spaces before and after tumbling. The revolvable cylinder includes as a part of its combination, a motor mechanism for intermittently revolving the cylinder, and a male-female connection for mounting and dismounting in association with the motor mechanism.

Abstract: A machine condition diagnostic system is provided wherein machine components or their immediate surroundings are labelled with indicator materials. A normal level of indicators in the lubricant will be established. The lubricant is monitored and periodically sampled to determine the presence of abnormal levels in the amount of indicator material. Since each component or components performing a similar function will be labelled with the same indicator, the presence of a particular indicator in abnormal amounts in the lubricant will direct the machine operator to the precise location requiring repair or replacement.

Abstract: In an abrasion testing apparatus for determining abrasion in a screen caused by suction box coatings and the like in the cellulose and paper industry, a driving shaft (6) is provided on a drum (8), which drum is provided with suction device coatings at its circumference. The driving shaft is arranged vertically and the drum (8) is connected to the lowered end of the shaft and extends into the upper end of the tank (3) filled with filler suspension. The drum (8) is of hollow construction, has a plurality of openings (10) in its circumferential wall (8a) and is open at least at one end.

Abstract: Apparatus for determining the mechanical properties of particulate material comprises an outer member defining a cylindrical cavity, and an inner member rotatable in the cavity, the inner and outer members together defining a pulverizing chamber. The inner member has a pressure-bearing face facing the pulverizing chamber and a diametrically disposed groove in which a steel blade can be fitted so as to protrude into the pulverizing chamber. In use, the inner and outer members are rotated with respect to one another, while the particulate material in the pulverizing chamber is placed under axial compression. The torque transmitted from one member to the other, as well as the axial force transmitted from one member to the other is measured during the relative rotation, and these measurements used to determine the mechanical properties of the coal as well as the wear characteristics of the blade.

Abstract: A holder is shown for flat specimens which are to be tested for the abrasion resistance of coatings or printed matter. In one embodiment, the holder is formed with block members with pads placed therebetween for reception of the specimens in face-to-face contact. The block members have curved surfaces at the ends to simulate the motion of transportation when utilized in conjunction with an abrasion testing machine. A retainer strap has flanges for engaging curved end portions of the blocks to aid in retaining them in contact. A method of testing flat specimens is also described.

Abstract: A canned motor pump has a bearing wear sensing device comprising a pair of ring elements having opposing surfaces. The outer element is mounted fixed with respect to the stator and the inner element is mounted for rotation with the rotor. The outer, fixed element is coated with polytetrafluoroethylene. An ohmmeter measures the resistance between the elements through the coating. As the motor bearings wear, displacement of the rotating element causes wear of the coating which reduces its thickness and decreases the resistance between the sensing elements through the coating. One conductor of the ohmmeter is connected directly to the outer, fixed element, and the other ohmmeter conductor is connected through the conductive bearings to the rotating element. Thus, the ohmmeter can dynamically measure the motor bearing wear.

Abstract: A method of and apparatus for reproducibly testing the resistance to wear and change in appearance as well as the soil resistance of construction units (4) in full size within the furniture field with associated environments, the construction unit (4) or parts thereof in its full construction being positioned secured on the inner side of a rotatable large drum (1) and subjected to stresses from various stress members (5) located in the drum (1). These stress members are activated by the rotation of the drum. The stress members (5) may for instance be leather balls (5) filled with water or sand and optionally provided with a facing of wearing members (15) of textile materials or another wearing material such as for instance emery cloth, whereafter the number of rotations of the drum are registered and compared with changes arising through natural use.

Abstract: Test apparatus for determining ignition characteristics of various metal in oxidizer environments simulating operating conditions for materials, the test apparatus has a chamber (6) through which the oxidizing agent flows, and means for mounting a stationary test sample (36) therein, a powered, rotating shaft (E) in the chamber rigidly mounts a second test sample (35). The shaft is axially movable to bring the samples into frictional engagement and heated to the ignition point. Instrumentation 16, 32, 48, 49, 50, 51, 52, 53, 54 connected to the apparatus provides for observation of temperatures, pressures, loads on and speeds of the rotating shaft, and torques whereby components of stressed oxygen systems can be selected which will avoid accidental fires under working conditions.

Abstract: An apparatus for quality control testing of semiconductor packages comprises a support platform for holding a device in a fixed location and a reciprocatable brush which is mounted to contact the device with a constant force. The reciprocating mechanism basically moves the brush horizontally across a test package but is linked with a cam system for elevating the brush out of contact with the test package during one of the strokes and lowering the brush back into contact with the test package during the other stroke. Highly accurate and repeatable abrasion tests can thus be performed.

Abstract: An improved method for determining that coating has been removed from an article surface is provided for use in a method of removing a selected coating from an article surface having a composition different from the coating by impacting the coating with abrasive particles. The improved method includes selecting from the light spectrum a color which provides a color contrast between light emitted from the coating and light reflected from the article surface during coating removal in an impact intensity range using the abrasive particles. Provided is the selected color light environment in which the coated article surface is placed and then impacted with abrasive particles in the impact intensity range to create the color contrast and to remove coating from the article surface, the impact would be conducted until the color contrast disappears.

Abstract: A pellet durability tester is provided which establishes the durability of manufactured pellets by subjecting them to circulation in a closed air re-circulation path and establishing the weight ratio of whole pellets in the sample before and after testing. The tester comprises a cabinet divided by an internal partion into two compartments, with one of these compartments constituting part of the re-circulation path. The pellets to be tested are introduced into the other compartment at its top and, in one embodiment, pass over a sieve to remove lose material from the whole pellets so that only the whole pellets are deposited into a container whose weight can be measured automatically. This container tips the pellet sample into the compartment for circulation around the re-circulation path.

Abstract: An abrasion testing machine has a vibrating horizontal platform which supports a six pack of test specimens, such as beverage cans. Hydraulic cylinder controlled pressure plates are applied to the sides of the array of test specimens and to the top of the array as the specimens are vibrated. The amount of pressure is controllable by a control cylinder for each of the pressure cylinders and the speed and magnitude of vibration is adjustable by controlling motor speed and the position of an adjustable linkage between the motor and the platform.

Abstract: A test apparatus can test the erosion resistance of a specimen. The apparatus has an enclosure containing in its test chamber an abrasive medium. Also included is a spindle attached to the enclosure. The spindle has an inside end adapted to hold the specimen. A motor coupled to the spindle can spin the inside end at an adjustable angular speed within the medium. Preferably, a thermal jacket can moderate temperature within the spindle apparatus. The apparatus is used to spin the specimen through the abrasive medium at a chosen speed and then measure the extent of erosion.

Abstract: An apparatus adapted to be mounted on a surface grinding machine is provided for testing abrasive grains in single-grit scratch tests. To permit specimen preparation and scratching to be carried out on a single machine without changeover and without reclamping the specimen, and to maintain the infeed in the scratching operation constant by giving the specimen a contour corresponding to the cross-feed error, a belt grinder and a scratching device comprising a support disk, mounted by means of a main flange and a counterflange, and a scratching disk mounted on the main flange and carrying a single grain secured to its periphery along with a force-measuring system disposed thereunder, are designed as a structural unit adapted to be mounted on the spindle of the surface grinding machine, with a belt tensioning arm mounted to the headstock.

Abstract: Method of and apparatus for testing required properties of the specimen solids such as tablets, pills, granules, capsules, etc. automatically and continuously. After nondestructive tests are performed, then destructive tests are performed automatically and continuously. The data obtained by the tests can be processed to record and display the processed data. The nondestructive tests comprise at least one of the tests of the weight, diameter, thickness, color difference, and surface area, etc. which are performed in order or simultaneously. The destructive tests comprise at least one of the tests of the hardness, disintegration, dissolution, abrasion and chemical analysis. The apparatus consists of supply a mechanism for supplying the solids, nondestructive test mechanisms, destructive test mechanisms and a system for transferring solids from one test position to the next test position.

Abstract: Apparatus for testing the abrasion resistance of a printed area on a carton which is also subjected to flexing during the abrasion process. The apparatus includes means for holding the two carton samples in proximity to each other while one sample is oscillated over and abraded with the other. One of the samples is provided with a raised center portion to simulate flexing of the carton samples as they are abraded.

Abstract: The present invention relates to an apparatus suitable for accomplishing a roll testing method. The object of the present invention is accomplished by hot rolling steel strip under the specified rolling condition using small size testing apparatus having about a tenth size of the actual rolling mill and good reciprocity like said rolling mill. The wear state (roughness), or new state, of the roll surface is estimated by a known type of surface roughness meter from the roll surface generated after hot-rolling the stell strip by the small size testing apparatus of the present invention. Said testing apparatus has the structure in which both the diameter of the rolls and the circumferential speed of the rolls are about a tenth of those of actual rolling mill and the number of the contact times (contact interval) between the rolls and the stell strip per the rolling time is the same to that of the actual rolling mill.

Abstract: An assembly for testing the rolling contact fatigue of a test material including a collet for mounting the test material, spherical bearings for rolling contact with the test material, and a support structure for supporting the mounting collet and the spherical bearings for relative rotation therebetween. The assembly is characterized by the support structure including a pair of adjustable race members, each having an inclined or frustoconical surface in rolling contact with the spherical bearings for applying an adjustable predetermined force against the spherical bearings to force the bearings into rolling contact with the test material.

Abstract: Apparatus for testing abrasive wear on a surface of a sample. Flowable abrasive material is fed from a barrel against the surface. The sample is mounted reciprocally in the direction of feeding of the material, and urged by a force opposing that of the material thereon. The rate of feeding is controlled to maintain a gap between the end of the barrel and the sample so that the material flows continuously through the gap.

Abstract: In accordance with the centrifugal erosion testing method of the invention, a material specimen is rotated with a flat surface facing the direction of rotation and a narrow stream of an abrasive particle slurry is concurrently flowed at a preselected rate in a radial direction across the flat surface, the rotating step being at sufficiently high angular velocity to urge the abrasive particles by Coriolis acceleration into a compacted mass against the flat surface and erode material therefrom by scouring type action as the particles flow radially outward. The rotating and flowing steps are continued for a sufficient preselected duration to erode material to a measurable depth, and the depth to which the flat surface is worn by the abrasive particles is measured as an indication of the erosion resistance of the specimen material.

Abstract: Footwear is tested and evaluated by apparatus which is capable of simulat the actual wearing thereof under various environmental conditions. The apparatus includes a leg pylon and artificial foot which are moved as a unit by apparatus which duplicates the motion of the knee and ankle of an individual. The artificial foot, on which the footwear to be tested is mounted, may be provided with various sensors or condition simulators.

Abstract: A machine for testing and comparing chains and sprokets of various geometries and materials comprising four sprockets and two chains and having a pneumatic cylinder for loading one chain against another. A motor which drives a rotatable fixed shaft which is mounted in two pillow block bearings. This shaft contains two sprockets. A second rotatable shaft is journalized in two pillow blocks mounted on a movable platform. Means are provided for applying a predetermined load through the movable platform to the second shaft and means are also provided for measuring the total cycle to chain-sprocket system failure. Means are also provided for determining chain load, for measuring chain and sprocket temperatures, for lubrication of the chains and sprockets, for cooling the test chamber, and for automatic machine shut off at failure.

Abstract: An abrasive wear tester wherein a segment of a relatively small diameter O-ring is held in contact with a rotating cylindrical disk. The disk is mounted to rotate about its longitudinal axes at a known rate for a specified period of time. The O-ring segment and cylinder are immersed in an abrasive fluid. The abrasive particles are pulled between the wear surfaces causing removal of the surface materials, predominantly the softer O-ring material. The O-ring specimen is cut from an O-ring and weighed prior to test. After the test the O-ring segment is again weighed and the weight of material removed by wear is calculated. These measurements indicate the wear resistance of the O-ring being tested. Service loads or pressures are simulated by means of a cable and weight system urging the O-ring against the cylindrical wear disk surface by means of a lever arm pulley arrangement or similar loading device.

Abstract: Cable tester and methods of operating the same for subjecting cable such as mining cable to simulated conditions substantially corresponding to actual field conditions as normally encountered by the cable for determining cable longevity, comprisinga surface having first and second spaced apart reference points and defining a test drag surface area therebetween,a source adjacent the second point for feed and return of a test span of the cable,first and second moving mechanisms, the first mechanism being connectable to the cable for moving the forward end of the test span from the second to the first point and the second mechanism being connectable to the cable for moving the rearward end of the test span from the second point to the source, anda control system for controlling the first and second mechanisms,for operation in a first test mode for simultaneous reciprocal movement of both mechanisms to drag the test span back and forth along the drag surface area to simulate corresponding field condition dragging

Abstract: A method and apparatus for measuring the abrasion depth of an outer surface of a substantially stationary body such as a tool which rests in working position against a rotating body such as a shaft to be ground. A measurement pin is inserted in a first direction into a measurement sleeve arranged in the stationary body, displaceably in the sleeve by action of one end of the pin against the shaft. During the grinding operation as a result of the abrasion on the surface of the stationary body the measurement pin is gradually inserted further into the sleeve and upon exceeding a distance of insertion corresponding to a predetermined abrasion on the surface of the stationary body which requires replacement of the stationary body the other end of the measurement pin contracts against an electric contact disposed inside the sleeve so as to provide an alarm via an electric circuit of an indicating device. In a path detection system a desired reference length of an end length of the measurement pin is stored.