Abstract: A device for producing inclines and/or grooves on friction pads, such as brake pads for motor vehicles comprises a table with a mount for the brake pads. The table is linearly moved on a carriage below flat, truncated-conical grind disks which are disposed in pairs and oriented mutually mirror-symmetrical. The table is swivellable about an axis oriented tranversely to the travel direction. The swivel movement is effected by at least one pneumatic cylinder. Control valves or control switches run onto cam ramps on cam bars when the table is driven forward and they initiate the swivel operation of the table. The friction pad is operated on when the table is in the downwardly or upwardly pivoted position, whereby the table is preferably locked in its position during the various grinding operations.

Abstract: Apparatus for supporting and containing a dental prosthesis during the micro-etching thereof is disclosed. The apparatus includes a framework, a holding mechanism carried by the framework for holding the prosthesis in a position which permits micro-etching, and a flexible hood, for example, a disposable plastic bag, which has an open end sized to slidably receive the framework into the hood while holding the prosthesis. The open end is sealable while the framework is so received, and the hood is transparent to permit viewing of the prosthesis within the hood. The hood is sliceable with a knife edge to provide a small slit which permits the tip of a micro-etching tool to extend into the hood. Alternately, the hood may be pre-slit for the same purpose.

Abstract: An polishing apparatus which can effectively polish a bottom wall of a wafer in a notch portion is disclosed. The apparatus includes: a table for supporting the wafer thereon; a rotary buff having a thickness so that the periphery thereof can enter the notch portion of the wafer, and is rotated around an axis which is parallel with a plane of the surface of the wafer supported on the table; a first rotating member such as a motor for rotating the rotary buff; a linkage for supporting the rotary buff; an adjusting member such as a cylinder device for adjusting the pressure applied to the bottom wall of the wafer in the notch portion from the rotary buff; and a second rotating member for turning the table around a predetermined axis which is approximately parallel with the rotary axis of the rotary buff so that the applied pressure from the rotary buff acts on the bottom wall of the wafer in the notch portion in a direction approximately perpendicular to the surface of the bottom wall.

Abstract: In accordance with the invention a holder is provided for an eyeglass frame having a pair of lens rims spaced apart by a bridge. A pair of supports are fixed in spaced apart relationship on a base plate and a cradle is journalled between the supports to rock beneath an axis spaced from and parallel to the base plate. A pair of jaws transversely mounted on the cradle in relation to the axis is biased toward closing and has a mouth accessible from above the axis. One or both of the jaws inwardly tapered from the mouth to a narrow passage and outwardly tapered from the narrow passage to a throat. The throat has inwardly extending seats. Thus, when a frame is inserted transversely into the mouth toward the throat with its upper rims against one of the jaws and its lower rims against the other of the jaws, the jaws open against bias to pass the frame through the narrow passage and then close under bias to secure the frame in the throat and on the seats.