Abstract: A tape burnishing device presents aligned stretches of burnishing tape at each side of a rotating disk. Air nozzles at each side of the disk urge an elliptical pattern of the respective stretches of tape into contact with the disk. During burnishing the tape is stationary while the device is advanced to burnish the desired surface of the disk. The tape stretches, that are portions of a single tape, are positioned at an angle with respect to the radius of the disk and the device is advanced in a radial direction to optimize the burnishing action relative to the rotating disk surface. The tape is advanced between burnishing operations twice the dimension of use during a burnishing operation with the two operating locations out of phase to enable the single tape to advance past both burnishing locations while presenting an unused surface at each location and using the entire surface of the tape.

Abstract: Apparatus for holding and storing sharpening stones that includes a water-tight reservoir which is open at the top and contains an integral supporting lip, bars that span the open top of the reservoir and are received within recesses in the reservoir sides, clamps on the rod to securely hold a sharpening stone in place, a lapping plate that rests within the integral supporting lip of the reservoir, and a dust cover which fits securely over the open top of the reservoir.

Abstract: A grinding device (2) is inserted in the synthetic resin housing (1) of the knife sharpener, this grinding device consisting of a supporting unit (3) with two resiliently designed supporting arms (6, 7) for two grinding wheels (8, 9). In the installed condition, the grinding wheels (8, 9) extend in sections and with a mutual spacing through slots (17, 18) in the housing wall (16) into a trough-like indentation (19) of the housing (1) accessible from the top. The two grinding wheels (8, 9) form, in the region of the indentation (19), by a partial overlap (20) with their peripheral surfaces (21, 22) a honing angle (.alpha.) which is infinitely variable within a range of 40.degree.-50.degree..

Abstract: An apparatus for removing wrappers from coin rolls comprises a cascade type vibrating feeder bowl for aligning wrapped coin rolls and feeding them serially to the upper end of a coin roll chute that slopes downwardly to a lower end. A pair of contra-rotatable abrasive discs overlie and partially straddle the chute at a predetermined location along its length and a vibrating separator for separating loose coins from their torn wrappers underlies the lower end of the chute. In use, wrapped coin rolls are fed to the chute and are directed thereby to the abrasive discs. The abrasive discs, then, bear against the rolls within the chute to tear away their paper wrappers whereupon the resulting loose coins and torn wrappers fall into the separator where the coins are separated from their torn wrappers for collection.

Abstract: An inexpensive, lightweight apparatus and method is provided for removing coagulum and other debris from the tip of cautery blades and needles during use and for holding cautery blades and needles when not in use. The cleaner comprises a pad having a lower compressible portion and an upper fibrous abrasive portion which is mounted to a hard, non-compressible base. The apparatus can be attached to a surgical drape or other accessible surface to permit cleaning using only one hand to manipulate the cauterizing instrument. Cautery tips and other sharp surgical instruments are cleaned by plunging them into, and then withdrawing them from, the abrasive pad. The pad also provides a convenient structure for holding cautery tips and other sharp surgical instrument in a point down, base up configuration when the instruments are not in use.

Abstract: The invention is directed to a cutter comprising, a base plate formed by bonding two sheets of thin ring member together, a plurality of projections formed thinner than the base plate on the peripheral edge thereof, an provided with holes and slits which are interposed therebetween, wires passing through the holes so as to connect the projection, and a ring-shaped cutting body including abrasive grains and formed around the projections so as to expose a portion of slits.Since the projections are formed thinner, abrasions easily take place thereon when the cutter is used. Furthermore, the cutting body at the slits is reinforced by the wires connecting the projections.Since the base plate is formed by bonding two ring members, it has a large strength as compared with the base plate used in the conventional cutter. Therefore, the base plate hardly breaks when using the cutter.

Abstract: A self-contained sandblasting unit is provided. A housing having a principal body portion and an outlet body portion has a slidable support bar mounted therethrough. A nozzle is mounted on the slidable support bar such that it is capable of lateral movement through the housing. A source of compressed air and abrasive particulate matter is connected to the nozzle.

Abstract: An automatic skate sharpener comprises a skate sharpening mechanism inside a cover. A skate loading device is pivotally mounted in an opening in the protective cover, so that it can be pivoted between a loading position, in which the skate is on the outside of the protective cover, and a starting position for sharpening of a skate, in which the skate is on the inside of the protective cover. The skate loading device comprises a gripping device for releasably gripping at least one skate to be sharpened, first obturation device which substantially closes the opening in the skate loading position, and second obturation device which substantially closes the opening in the starting position.

Abstract: A method and apparatus for cleaning the optical elements in an excimer laser in situ. A source of high pressure carbon dioxide gas is allowed to escape through a nozzle facing the surface of the optical elements. The escaping gas expands and cools sufficiently to form a carbon dioxide ice jet. The ice jet strikes the surface of the optical elements causing cleaning of the elements by abrasion. Carbon dioxide may be removed merely by evacuation and purging of the system. Thus the mirrors are cleaned without removing them.

Abstract: A blasting device for cleaning the inner surface of a hot deformed pipe end has a blast lance of inner and outer coaxially aligned tubes which connect with a blast nozzle head having nozzles. Injectors on the inner tube direct carrier medium and abrasive in an annular chamber between the inner and the outer tubes, through the nozzles. An axial pipe coaxially disposed in the inner pipe carrier further carries medium through the blast nozzle head and a deflector attached to the blast nozzle has radially extending passageways that direct the same through the periphery of the blast nozzle head to provide a gas curtain to protect the undeformed pipe section from abrasive. A removeable heat resistant element is attached to the deflector to further protect the undeformed section of the pipe.

Abstract: An abrasive sanding tool which utilizes a sanding loop stretched over a tensioning body which has a narrow lateral reaction bar at one end of the loop and a cylindrical retainer at the other end of the loop. A handle screws onto the retainer and moves a shaft on the body within the hands to shift the lateral reaction bar into a position to tension the sanding loop.

Abstract: A microfinishing machine and tooling particularly adapted for lobed cam surfaces such as internal combustion engine camshafts or outer irregular surfaces. The microfinishing tooling includes shoes having a pair of rollers which press abrasive coated film material against the workpiece being machined. The rollers are carried by a plate which is also free to rotate slightly. The roller elements are free to rotate and therefore wear on the tooling is minimized in response to minute motion of the microfinishing film during the microfinishing process. Furthermore, the roller elements closely follow the contours of the workpiece surface to provide a more uniform machining effect. Various configurations for the roller elements are disclosed, including a unitary roller made of a hard material and another embodiment in which the roller is coated with an elastomeric material.

Abstract: An arrangement for protecting the slides of a machine tool in general and a creep feed grinding machine in particular against the corrosive and heat effects of the coolant medium for the machine. The machine includes two servo-motor driven slides which are movably mounted on a first base. A second slide is normally movably mounted on top of a first slide of the two slides. A first bushing is mounted in the second slide and a support column is reciprocally, vertically mounted in the first bushing. A machine tool, such as a motor-driven grinding wheel, is mounted on the first column. A second base is rigidly mounted on the first base. A bearing is mounted in the second base and a support shaft carrying a workpiece table is rotatably mounted about a vertical axis in the bearing. The second base has an opening and the support column extends through this opening. The interior diameter of the opening is larger than the exterior diameter of the support column.

Abstract: A cylinder truing hone comprising a plurality of pressure members mounted in circumferentially spaced locations around a driven member for movement radially of the driven member and with pressure surfaces on the pressure members outermost. An axially movable cam on the driven member is in engagement with the pressure members and can move them outwardly. Abrasive coated sheet material extends over the pressure surfaces where it can be pressed into engagement with a cylindrical inner surface by movement of the cam, and a mechanism is provided for changing the portion of the abrasive coated sheet material extending over the pressure surfaces.

Abstract: A method of forming hemispherically shaped diamond cutting elements for use in a rotary drill bit is provided. The method includes identifying a cleaving plane in a diamond and a perpendicular axis, polishing the diamond to form a series of truncated cones approximating a hemisphere around said axis, and cleaving the diamond to form a cutting face.

Abstract: In order to so improve a portable machine tool, in particular, an angle grinder, with a drive, with a work spindle having a tool clamping means and with a securing device which is operable from outside an apparatus housing and by means of which the tool clamping means is transferable from a manually releasable position to a manually unreleasable position in which the tool is clamped--and vice versa--that with a design which is as simple as possible from a structural point of view, rotation of the work spindle is not possible while the tool clamping means is being released or manually tightened, it is proposed that a locking device for non-rotatably fixing the work spindle on the apparatus housing be provided and that the locking device automatically lock the work spindle in a non-rotatable manner when the drive is switched off and the securing device is i the position in which the tool clamping means is manually releasable--and vice versa.

Abstract: A surfacing machine for discrete objects includes a generally cylindrical drum with first and second ends, a longitudinal axis extending between the drum ends and a generally cylindrical, coaxial inner bore extending between and open at the ends. The drum bore has a surface defined by an abrasive material. A screw auger has first and second ends and is coaxially mounted within the drum bore. A drive system is drivingly connected to the drum and the screw auger and is adapted for counterrotating them. A noise and dust control system partially encloses the surfacing machine and a feed system feeds discrete objects to it.

Abstract: In a pliers-type tool with a fixed jaw carrier (13A) and a movable jaw carrier (13B) arranged on a pivotable rocker (14) which is connected with an at least to a limited degree resiliently bendable bracket (15). The rocker (14) is with the aid of a pivot pin (14A) pivotally attached to a longitudinal tool body (11), the pivot pin (14A) passing through the rocker (14) in a hole which is larger than the diameter of the pivot pin (14A), and is anchored on one end of a short link (17), the other end of which link is attached to the said bracket (17).Thus work pieces, having a size within certain limits, may be precisely treated.

Abstract: The invention is directed to a tensioning device for a portable handheld tool machine such as a grinding machine or cutting and grinding machine. Such machines have an arm which includes two component sections axially displaceable toward each other and between which a belt tensioning device is mounted. The displaceable component must be displaced against the force of the tensioning device toward the component fixed on the housing of the machine when mounting a new belt. This is inconvenient and leads to difficulties when mounting a new belt. A setting device is provided which acts upon the belt tensioning device. The setting device is movable between first and second positions and blocks the tensioning force in its first position and releases the tensioning force in its second position.

Abstract: A clamping device for portable grinding machines comprising a clamping nut which can be screwed on to the end-side threaded step (13) of the drive spindle (10) to clamp a grinding disk (15) in place. The clamping nut carries a clamping fork (22) which, with its fork leg ends (26, 27), is held so as to be movable about a diametral pivot axis (30) between a clamping position and a loosened position. The ends (26, 27) are provided with eccentric pressing surfaces (28, 29) which decrease with regard to the eccentricity during the pivoting from the clamping position to the release position and act axially on the grinding disk (15) via a pressing disk (36). For releasing, the clamping fork (22) is pivoted about the pivot axis, surface areas of decreasing eccentricity of the pressing surfaces (28, 29) becoming effective. In the process, the thread (14, 20) is relieved and the clamping nut loosened, which can be fully unscrewed manually by taking hold of the clamping fork (22).