Abstract: Disclosed is a process for the production of an edged ophthalmic lens wherein an ophthalmic lens which initially is finished on one side and not yet edged according to a prescribed disk shape, i.e. a so-called blank having only one finished effective surface, is produced and the so-called prescription surface is produced in another manufacturing step, if need be, including optimization of the critical thickness.

Abstract: In a quick-action clamping device for axially securing a disk-shaped tool, particularly a grinding wheel on a flange of a driven spindle that has a clamping part provided with a thread that can be screwed to the thread of the spindle. The disk-shaped tool is held clamped between contact surfaces of the flange and the clamping part whose spacing from one another can be changed. It is proposed to avoid complete release of the tension nut during spindle stop operation in that the tool is pressed against the flange by means of at least one additional holding surface via a spring force, and that this additional holding surface is connected to the spindle in a manner secured against relative rotation.

Abstract: The wrench is formed by a cylindrical sleeve having one end portion of relatively large inside diameter and a second end portion of smaller inside diameter. The larger end portion of the sleeve is formed with four angularly spaced notches which enable the wrench to be used to turn plastic nuts having either two or four wrenching wings. The smaller end portion of the sleeve is formed with six angularly spaced notches and may be used to turn either hex nuts or nuts having between two and six wrenching lugs.

Abstract: A media control valve used to meter and dispense an amount of abrasive media from a supply pot to a compressed airline for blast cleaning comprises; a media passage communicating with the supply pot and an airflow tube, a bore disposed in the valve and communicating with the media passage, a media control sleeve placed within the bore disposed between the media passage and the airflow tube and containing a plurality of spaced restricting orifices, a valve stem slidable within the media control sleeve and capable of opening and closing the orifices, the valve stem being secured to an activating means to move the valve stem in a manner such that the valve stem will self-align itself within the interior of the media control sleeve. The self-alignment feature is provided by dividing the valve stem into a lower valve stem portion and an upper valve stem portion which is secured to the activating means.

Abstract: A device for attaching/detaching a snap ring, which can be set up in either of types for shaft and hole applications only by one operation of turning right and left leading portions removably inserted in holes at both ends of a snap ring.

Abstract: A grinding wheel for V-profiling ophthalmic lenses of various diameters, powers and thicknesses has a V-shaped groove circumferentially thereabout which defines a forward V surface and a rear V surface meeting at a nadir of the groove. A rear flat surface tapers outwardly in relation to an axis of rotation of the wheel from a rear edge of the rear V surface toward a rear face of the wheel. The forward V surface is of a first grinding aggressiveness, the rear V surface is of second grinding aggressiveness greater than the first grinding aggressiveness and the rear flat surface is of third grinding aggressiveness substantially greater than the second grinding aggressiveness. In a preferred embodiment, the wheel also has a forward flat surface tapering outwardly in relation to the axis of rotation of the wheel from a forward edge of the forward V surface toward a forward face of the wheel.

Abstract: An in-process rotary machine balancer which utilizes a plurality of vibration wave motors with unbalanced rotor members for positioning the unbalanced rotors to cancel a measured imbalance of a rotating machine. Each unbalanced rotor member is positioned in rotation with respect to a rotating machine component by activating a respective vibration wave motor to orient the plurality of unbalanced rotor members to a desired trigonometric configuration which balances the rotating machine part. Preferably, an off-the-shelf vibration wave motor is modified by affixing an eccentric mass to the rotor member which provides the corresponding rotary imbalance. Preferably, a pair of vibration wave motors are utilized on a rotating machine shaft such that their initial configuration offsets and balances each respective eccentric mass in order to determine the imbalance of a rotating shaft. Corresponding rotation of each unbalanced rotor member produces a corresponding opposite imbalance which balances the rotating shaft.

Abstract: In a device for grinding workpieces, in particular workpieces made of ceramic materials, by means of a grinding wheel (24) or the like, the workpiece (23) is oscillated transversely to the machining direction during grinding. At least one ultrasonic transducer (1), whose ultrasonic energy is used as exciting energy for the workpiece (23), is provided as a device (20) for generating the oscillating movement of the workpiece (23). An ultrasonic resonance space (2,4) for amplitude transformation is provided between the ultrasonic transducer (1) and a sonotrode (5) which transmits the vibration to the workpiece (23).

Abstract: A device that is intended as a snap on attachment for an existing pole-mounted sander. Snap-fit receiving elements are attached to the poleward side of the generally rectangular and planar abrasive receiving surface and the pole itself is slid through and retained against lateral movement by a central rigid collar. This then brings a substantially rigid mouth portion that is configured to extend about the periphery of the receiving surface, and that also carries upon it the protruding snap members, into a proximal relationship with the abrasive receiving surface whereby the mutually engageable snap members hold the present invention in place to form a continuous intake port. A flexible collar portion lies between the mouth portion and the rigid collar portion to allow for tilting of the abrasive surface during use, as is common on the pole mounted sanders currently in use.

Abstract: A disposable abrasive wheel for mounting on a rotatable threaded spindle of a power tool. The abrasive wheel contains a retaining nut on one side and a backing member on the other side non-removably secured together on the abrasive wheel without the aid of adhesives in such a manner that the abrasive wheel is placed in compression when it is operably secured upon the spindle of the power tool under operative loads. A metal pressure cap extends outwardly from the backing member and has an upper flat surface for engaging a should formed on the spindle of the power tool during operation of the finishing article. The metal pressure cap includes an inner surface defining a plurality of grooves. A peripheral wall extends upwardly from the retaining nut into the pressure cap and includes portions thereof disposed within said grooves.

Abstract: A lapping compound mixing and supply system wherein lapping compound is recirculated to the mixing vessel when not supplied to the lapping chamber of a machine tool such as a gear lapping machine. Lapping compound is pumped at about a first range of pump speeds to the lapping chamber, however, when no lapping is being performed, lapping compound is pumped at about a second, decreased range of pump speeds through a recirculating conduit and introduced into the mixing vessel along the conical bottom surface of the vessel. The introduction of lapping compound in this manner, along with the action of an rotating impeller in the vessel, provides improved mixing of the lapping compound and homogenizes the temperature thereof.

Abstract: A carton score line breaker assembly for breaking four end closure panels. The assembly includes two oppositely disposed pairs of breaker elements for, in turn, breaking the two oppositely disposed panels inwardly. Both pairs of elements are continuously rotating.

Abstract: An apparatus for bevelling the edge of a wafer, comprising a framework, a table rotatably mounted to the framework and capable of holding down the wafer, a buff rotatably mounted to the framework opposite the table and having a formed groove for bevelling the wafer edge, an air cylinder assembly mounted to the framework and pressing the buff by different forces on the orientation flat, the circular edge and the round joints of the wafer held down by the table, a sensor sensing the orientation flat, the circular edge and the round joints of the wafer held down by the table and producing corresponding signals, and a control controlling the air cylinder assembly to select between the forces in response to the signals. The apparatus may comprise a grooving cutter assembly removably held by the table, a lock locking the rotation of the table when the apparatus produces the formed groove in the buff, and a stopper stopping the air cylinder assembly and positioning the cutter assembly relative to the buff.

Abstract: A dead-blow nonmarring hammer has its head and handle portions unitarily formed on half shells which are welded together. Hammer face inserts are received in ends of the housing portion and impact plates can be provided inwardly of the inserts to protect the inserts against wear by the mobile mass within the housing.

Abstract: An apparatus for grinding hard disk substrates includes a dressing unit essentially radially movable across the faces of rotating of grinding wheels for simultaneously dressing one or both of the two confronting surfaces thereof. The apparatus thus constructed is suited to fully automated grinding/dressing operations.

Abstract: A nozzle for a sand blaster for dust-free blasting of plain surfaces comprises a tubular housing (1) with a revolving nozzle head (3) which is connectable to a blast hose (2). The nozzle head (3) is covered with an end plate (4) provided with inclined orifices (7) so that the nozzle head (3) will be revolved by the throw of the sand blasting material. For a better adaptability to different demands for cleaning, each orifice (7) is provided with a slewable blast pipe (9) which is mounted slewable with a socket joint (10) at the end plate (4).

Abstract: The invention is an adjustable plier wrench hand tool, combining the useful functions of standard adjustable wrenches with standard vise grip pliers. The invention has a main body, a plier handle having a plier handle head, and an upper and lower jaw. The lower jaw is slidably mounted to the main body and capable of moving towards and away from the upper jaw. A thumbscrew is threaded and mated to corresponding teeth on a rack integrally formed with the lower jaw, such that by rotating the thumbscrew, the lower jaw moves towards and away from the upper jaw. The thumbscrew has a bore through which a stub shaft, extends from which a cam, protrudes. By bringing the plier handle into a closed position, an apex of the plier handle head pushes against a cam surface of the cam, forcing the cam, the thumbscrew, and hence the lower jaw upwards, in effect causing a compression between the lower jaw and the upper jaw, so as to firmly grip an object typically a nut.

Abstract: A traveling device having a frame means, and a moving means mounted on the frame means and moving on a travel surface, the moving means comprising a plurality of wheels, or a plurality of endless tracks each including a plurality of belt pulleys is disclosed. The frame means includes a main frame, a pair of oscillating frames arranged on both sides of the main frame, and a connecting frame disposed on one end portion side of the main frame. A central portion of the connecting frame is coupled to the main frame via a monoaxially oscillating joint means, both end portions of the connecting frame are coupled to one end portion of each of the oscillating frames via an omniaxially oscillating joint means, and the other end portion of each of the oscillating frames is coupled to both side portions of the other end portion of the main frame via a biaxially oscillating joint means.

Abstract: An apparatus and method for on-site dressing and truing of rubber-covered cylinders mounted within sanding machines. The grinding apparatus comprises a base having a pneumatic cylinder mounted thereon for imparting oscillating or reciprocating movement to an abrasive plate which extends back and forth along the length of the rubber-covered cylinder during the dressing and truing procedure. The grinding apparatus removes the necessary amount of rubber compound from the rubber-covered cylinder upon which it acts until the rubber-covered cylinder is perfectly round, and the grinding apparatus is then removed from the sanding machine. In this fashion, the apparatus and method of the invention provide for on-site dressing and truing of rubber-covered cylinders of sanding machines without the necessity for conventional removal of the rubber-covered cylinders for dressing and truing.

Abstract: A pad conditioning method and apparatus for chemical-mechanical polishing. A polishing pad (114) is attached to a platen (112) and used to polish a wafer (116). Rotating arm (118) positions the wafer (116) over the pad (114) and applies pressure. During wafer polishing particles build up on the polishing pad (114) reducing its effectiveness. Either during or in between wafer polishing (or both), conditioning head (122) is applied to pad (114) to remove the particles from pad (114) into the slurry (120). Conditioning head (122) comprises a semiconductor substrate (126) that is patterned and etched to form a plurality of geometries (128) having a feature size on the order of polishing pad (114) cell size.