Abstract: An abrasive member for surfacing a workpiece by rotary abrasion under a flow of liquid, comprises a base and a plurality of abrasive segments protruding from the base. The abrasive segments are shaped and arranged in spaced relation to one another so as to form a network of intersecting primary and secondary channels, the secondary channels cooperating with the primary channels to effect substantially complete scavenging of detritus by centrifugal drainage of waste liquid carrying the detritus through both the primary and secondary channels to the outer periphery of the arrangement of abrasive segments.

Abstract: This relates to a pipe cleaner for cleaning pipe interiors such as gas and oil pipelines. The pipe cleaner is adjustable for cleaning pipes of different diameters beginning as low as 12" inside diameter. However, the usual requirement for gas and oil line pipes is between 20" to 48" diameters with it being feasible to clean pipes of greater diameters. The pipe cleaner includes a cleaning head carried by a boom with the pipe cleaner consisting primarily of a high performance blast wheel driven by a hydraulic motor. The blast wheel is provided with radiating vanes which are of a flared construction and with alternating vanes being differently shaped so as to provide for a wide pattern of abrasive particles. The cleaning head is positioned within the pipe to be cleaned by being carried by a boom with the pipe being supported coaxial with that of the boom and being rotated.

Abstract: In accordance with illustrative embodiments of the present invention, a hopper containing a sodium bicarbonate abrasive is pressurized with a dry gas such as nitrogen. The abrasive is fed into a transport line through which compressed air flows toward a nozzle, and pressures in the hopper and transport line are regulated so that the hopper pressure is greater than the transport line pressure by an amount that keeps the abrasive in the hopper very dry so that the same differential pressure causes a precisely metered amount of abrasive flow.

Abstract: A paint line cleaning system includes an elongated enclosure or housing having an inlet and an outlet. A nozzle is supported within the housing. The nozzle is connected to a source of cleaning media. The nozzle is positioned by a programmable robot. A pair of door sets mounted on the enclosure open and close the inlet and outlet. A portion of the paint line system to be cleaned may pass into the enclosure and the nozzle is positioned so that the cleaning media removes paint and the like.

Abstract: A knife sharpening cutting board is disclosed in which a cutting board is provided with a recess along a peripheral edge and with intersecting pairs of knife sharpening disks mounted within the recess and rotatably secured to the cutting board for selective rotation about axes that are substantially parallel to one another and to the surface of the cutting board. The disks overlap one another radially to form an intersection that is adjacent to the top cutting surface of the board, and aligned with a groove formed in the board. The groove extends from the sharpening disks across the board to receive a knife blade as the knife is drawn across the sharpening disks. The recess is provided to receive the disks and to locate the disks within the board for protection and appearance purposes. Screws mounting the disks within the recess are accessible to facilitate disk removal.

Abstract: The present invention relates to an automated random, orbital abrading apparatus and a method for positioning the back-up pad of the apparatus at a known location within its range of motion at the end of an abrading cycle.

Abstract: An improved micro-finishing machine is disclosed in which a transfer system is provided to move workpieces into and out of the machine in a path perpendicular to the axes of the machine drive rollers. The transfer system further enables an inprocess size control gauge to be added to the machine to monitor the diameter of the workpieces during micro-finishing. The machine offers greater flexibility by enabling the machine to be easily reconfigured to micro-finish other parts. The transfer system utilizes ejectors that are simple in construction, requiring a minimal number of components.

Abstract: The apparatus for finishing the conic surface includes a flexible base member and rigid side members, which rigid side members are secured such that the planes thereof intersect in a line that is collinear with the axis of the conic surface to be finished.

Abstract: A machine for grinding and polishing ends of glass articles comprises a grinding wheel mounted for rotation about a first axis, and a fixture for holding a plurality of articles to be ground by the wheel. The fixture includes a spindle rotatable about a second axis, and a work holder mounted at an end of the spindle. The work holder has a plurality of workpiece-receiving cavities circumferentially spaced around the second axis, and each cavity has an axis parallel to the second axis. The first and second axes may be parallel to one another, oblique, or perpendicular, depending on the desired product.

Abstract: A lower polishing disk is divided into inner and outer disks, and a holding portion for rollably holding a ball is formed with the outer circumferential portion of the inner disk and the inner circumferential portion of the outer polishing disk. The ball held by the holding portion is pushed by the upper polishing disk with a predetermined load. When the inner disk, outer disk, and upper polishing disk are driven in this state, the ball is polished.

Abstract: A retainer for the nose piece of the shoe which backs the abrasive belt in a belt-type grinding machine. The nose piece is T-shaped having a cross member provided with opposite side portions and a stem between the side portions. The head of the shoe has a stem-receiving recess and outwardly facing locating shoulders on opposite sides of the recess. The nose piece is mounted on the head with its stem in the recess and its side portions overlying the shoulders. The retainer is a pin having a resilient shank provided with an offset which may be either a laterally bent portion of the shank or a cam-like projection on the shank. The pin is received in aligned openings in the head and in the stem. When rotated to locking position, the pin offset forces the stem down into the recess and also forces the side portions of the cross member down squarely and solidly upon the shoulders.

Abstract: An apparatus for grinding cast steel railroad wheels is provided. The apparatus comprises a railroad wheel support assembly that includes a roller assembly to receive and grasp the railroad wheel and rotate the railroad wheel about its center axis. A grinding assembly is also provided that includes a motor operatively connected to a grinding wheel. The motor and grinding wheel are mounted to a support assembly. The railroad wheel support assembly oscillates about an axle assembly during grinding. The grinding assembly is designed to advance the grinding wheel laterally into the railroad wheel during grinding. The lateral advancing of the grinding wheel and oscillating of the railroad wheel are controlled to achieve a finish grinding of the selected surface of the railroad wheel to a preselected contour.

Abstract: This relates to an inexpensive blast wheel for applying abrasive particles to work pieces to be cleaned. The blast wheel provides a simple arrangement for supporting vanes in the form of a hub having a bowl shaped portion in which bases of vanes are seated with the bases being clamped in place by a plate portion of an impeller. Each vane includes a wide base connected to the vane by way of a spacer. The impeller plate has a notch for each vane with the notch receiving the spacer and overlying the base. The bowl portion of the hub includes a peripheral flange which engages an outer end of the vane base to restrain it against radial outwardly directed movement. The vanes may be changed by providing the hub flange with a notch through which a vane base may pass. By loosening the impeller plate relative to the hub, and aligning each vane in sequence with respect to the notch, the vane may be slid through the notch and removed from the hub.

Abstract: A jig is provided for accurately and easily positioning a single crystal ingot with respect to the clamp rotary shafts of a device for grinding the peripheral surface of the ingot. The jig includes male positioning fixtures 10L and 10R and female positioning fixtures 32L and 32R. In the male positioning fixtures, negative-pressure suction cups 105 made of an elastic or viscoelastic material and blocks 101 at the backs of the cups are integrally formed with each other. In the female positioning fixtures, holes 325 are formed at the ends of the clamp rotary shafts 30L and 30R of the grinding device. The male positioning fixtures are accommodated in the holes, and the blocks are fitted into the holes so as to be concentric with the clamp rotary shafts.

Abstract: This invention relates to the grinding of titanium alloys and particularly to the grinding of titanium alloys using electroplated synthetic diamond wheels with surface speeds in excess of 2290 surface meters per minute. Other operating parameters are defined which permit the effective grinding of titanium at high rates and which produce desirable residual surface compressive stresses in the surface of the ground article.

Abstract: The machine according to the invention consists of an abrasive belt 6 stretched between a support drum 3 and a return drum 5, this assembly being rotated by a motor 7 accommodated between support drum 3 and return drum 5 between the two lengths 61, 62 of abrasive belt that link the drums. Support drum 3 consists of at least two sections with different hardnesses, namely a section with a rigid peripheral surface for dry grinding and a section with an elastic peripheral surface for initial machining or surface polishing. A driving drum may be placed above support drum 3 for the motorized feeding of the ski.

Abstract: A system for sand blasting includes a longitudinally protecting wall provided with a horizontal slit therethrough, a control center having a platform longitudinally displaceable in front of the wall and a seat on the platform which can be vertically displaced relative to the slit. A sand blasting gun is mounted on the platform between the wall and the seat and extends through the slit. The gun is pivotally mounted on a post substantially in the plane of the wall for allowing the gun to be directed in a plurality of angular directions across the slit. A stand for supporting an article having a large surface to be treated is located on the side of the wall opposite the chair. The stand is adapted to pivot the article about a vertical and a horizontal axis whereby the gun is adapted to laterally project sand on the article when the platform is displaced from side to side along the slit and when the gun and the stand are pivoted about their vertical axis.

Abstract: An indexing device for a grinder selectively positions the rod bearing journals of a crankshaft at a preselected location relative to an abrasive wheel of the grinder. The indexing device includes a spindle connected to a drive shaft of the grinder, a chuck rotatably mounted on the spindle, and an indexing motor for rotating the chuck on the spindle. The indexing motor is movable on guides between a first position at which rotatable driving engagement of the chuck is achieveble and a second position spaced from the first position at which the chuck is free to rotate about the spindle to position the crankshaft at the preselected location. A first latch selectively maintains the chuck from rotation and thus the rod bearing journal at the preselected location so that accurate grinding of the rod bearing journal may be achieved. Indexing of the crankshaft and control of the first latch is achieved automatically by a control device having a processor and sensors.

Abstract: A rotary cutter saw apparatus (C, B) is movable along an elongated rail element (1). To permit continuous selected longitudinal adjustment of support blocks (8, 34) with respect to a base support suface (S) along the length of elongated rail element (1), an attachment base is formed on the rail element which interfits with a projection-and-recess fit with a portion of the support block. A clamping arrangement (7) can clamp the interengaging projection-and-recess portions together; preferably, they form a dovetail connection, with a movable clamping jaw which clamps both against the attachment base and the support block structure. The support block may include a plate (10), adjustably positioned over the surface by adjustment screw bolts, or a rod or tube element (35), so that the rail element (1) and the cutter element thereon, can also be tilted about the axis of the rod or tube element.

Abstract: An improved radially expandable honing mandrel construction wherein a radially extendable work engaging portion can be positively retracted into the body member of the mandrel by operation of the adjusting member in a direction opposite its direction for expanding the work engaging portion, which positively retracting feature comprises a surface adjacent one side of the work engaging portion and a tab extending from the side of the adjusting member for engagement with the surface to retract the work engaging member when the adjusting member is operated in a direction opposite from that used for expanding the work engaging member, the surface and tab also cooperating to retain the work engaging portion in the mandrel. The invention also includes structure on the mandrel engageable with the adjusting member to prevent lateral movements thereof in the body member.