Abstract: A mounting for cutter wheels on rotary rock drill bits includes a spindle with two annular axial load bearing surfaces, one of which interfaces in a rotational relationship with a cylindrical segmented bushing affixed to the inside surface of a cavity in the cutter wheel and the other of which interfaces through a top hat bushing flange in a rotational relationship with an annular end bearing surface in the cavity of the cutting wheel. A compressive silver coating on the cylindrical bushing before it is split, leaving uncoated edges for precise registration and bit onto a cylindrical race surface machined into the spindle, provides lubrication in addition to compressing under load to distribute axial loading forces from the cutter wheel in proportion to the two axial load bearing surfaces on the spindle.

Abstract: A sanitary surgical blade removal instrument for removing a disposable blade from the handle of a surgical tool. The instrument consisting of a piece of sheet metal bent at a C-shaped flexible fold to produce an upper portion and a lower portion which extend generally parallel to one another. The upper and lower portions of the sheet metal form the upper and lower portions of a blade gripping and flexing end and the upper and lower portions of a handle end. To use the blade removal instrument, the surgical tool is inserted into the removal instrument so that the neck of the surgical tool rests within a lower notch in a lower ridge of the lower portion of the removal instrument such that the lower ridge on either side of the lower notch engages the underneath side of the disposable blade. The user squeezes the upper and lower portions of the handle of the removal instrument, keeping his hand at a safe distance from the sharp contaminated blade.

Abstract: Pliers arranged in an adjustable relationship including first and second facing jaw faces are arranged to threadedly receive inserts therewithin, having cylindrical or optional polygonal projections arranged for reception within an associated workpiece. The tool structure is arranged to accommodate plural sets of the projections within the handles for ease of access and use of the organization.