Abstract: A face mill having individual, circumferentially spaced cutting inserts each individually adjustable by means of a wedging part.

Abstract: An improved cutting tool has a blade removably secured to a movable body. The body is provided with an elongated slot extending into the body from its outer surface and arranged transversely of the direction of tool movement. This slot is bounded by spaced leading and trailing wall surfaces arranged to face one another and separated by an intermediate base surface. A blade is preferably arranged in the slot such that its leading surface is in area contact with the body leading wall surface. The trailing surface of the blade is provided with a plurality of serrations. A wedge, having a plurality of serrations on its leading surface, is insertable into the slot between the blade and the body trailing wall surface. The serrations on the blade and wedge mesh and interlock with one another, and permit the blade to be incrementally positioned relative to the wedge. A tongue extending outwardly from the wedge trailing surface is insertable into a cooperative groove recessed in the body trailing wall surface.

Abstract: Device for roughening the edge surface of a plurality of sheets to be bound into a book, in which the sheets are clamped, with one edge surface thereof facing a rotatable cutter, which is moved along the length of the edge surface while the cutter is rotated so that the blade traverses the edge surface thereby producing successive arcuate scores in the edge surface. When adhesive is applied to the edge surface, the cuts or scores help provide a stronger binding force than if the edge surface were flat.

Abstract: An attachment for a conventional lathe having work-supporting means for rotating a workpiece about a predetermined axis, a cross slide movable at right angles to the axis of rotation of the work supporting means and motor means for effecting rotation of the work supporting means and traversing of the cross slide, said attachment being designed to support a tool for rotation about an axis situated in a plane containing the said predetermined axis and for rectilinear movement axially at right angles to said predetermined axis. The tool is provided with one or more cutting elements such as a bit or a plurality of bits arranged at an angle of substantially 18 degrees to the axis of rotation of the tool. Other cutting devices may be substituted for the bits as, for example, grinding tools, lapidaries, twist drills, routing tools and the like. The attachment as thus described is particularly adapted to generating spherical surfaces to a high degree of accuracy and surface smoothness.