Abstract: An impact power tool for use in supporting a tool tip for hand-working operations comprises a body presenting a bore and having first and second ends. A piston is received within the bore and is shiftable relative to the body, and an anvil is received within the bore at a first end of the body and is shiftable relative to the body along the longitudinal axis thereof. The anvil includes a recess extending in a direction substantially parallel with the axis of the bore so as to define a receptacle in the anvil adjacent the first end of the bore. A tool carrier block is provided which is shaped for receipt in the recess of the anvil and which includes a set screw for permitting attachment of the carrier block to a tool tip to be supported on the impact power tool. The carrier block is retained in the anvil by friction-fit engagement sufficient to retain the carrier block in the receptacle and to permit manual removal of the carrier block.

Abstract: An impact power tool for use in delicate hand-working operations includes a body presenting a bore and a piston received within the bore and shiftable relative thereto. An impact transmitting member is also received in the bore and is shiftable relative to the body. This impact transmitting member is positioned axially in the bore by a mounting element interposed between the impact transmitting member and the body, the mounting element being resilient relative to the body. The piston is driven along a stroke length between an impact position engaging the impact transmitting member and an extended position out of contact with the member.

Abstract: A craftsman's tool for supporting jewelry includes an L-shaped frame pivotally coupled to a stationary support such as a work bench or the like, and a collar rotatably connected to the frame removably carries a housing which receives a shiftable member presenting movable clamping jaws for releasably holding an item of jewelry. A handrest fixed to the frame swings to an out-of-the-way position as the frame is pivoted relative to the support for improving access as may be needed to the jaws or the item of jewelry supported thereby. A third hand device for positioning an object on the item of jewelry supported by the jaws is fixedly connected to the frame so that the frame can be pivoted as necessary without disturbing the positional relationship between the object held by the third hand device and the jewelry item carried by the jaws.

Abstract: An impact power tool for delicate hand working operations is provided which is especially adapted for detailed engraving, carving, and delicate stone setting applications. The power tool preferably includes a hand-held impact device, a piston received within the body of the device and shiftable therein for delivering impact energy to the device, conduit for delivering and venting motive fluid from and to the hand-held device for shifting of the piston, and a valve coupling the directing and venting conduits to the device in alternative fashion at rapid, variable, cyclical rate. The impact tool may be operated by connection to a standard source of pressurized air. The tool is capable of providing a greater range of impact strokes per second than conventional hand-held controlled impact tools, and thereby provides expanded capability for extremely delicate and fine engraving, carving and stone setting work.

Abstract: A tool sharpening or finishing machine is provided having an improved, low cost, laterally shiftable and tiltable tool-supporting table adjacent a rotatable, abrasive wheel. The table is supported for back-and-forth shifting by a roller bearing assembly having a plurality of spaced apart and resiliently biased together bearings connected to a base, with a shiftable element received between the bearings and connected to the table. The base is preferably slotted between the spaced bearings to form a structural spring within the base, and one of the bearings is eccentrically mounted for selective variation of the effective distance between the bearings, so that the bearing assembly can be properly preloaded without the need for precision manufacture of the assembly components.

Abstract: An improved sharpening machine is provided for easy, extremely accurate sharpening of a variety of tools such as lathe, boring and cutting tools. The machine includes a rotatable, low speed, diamond or other abrasive surfaced wheel, and a tool-supporting table mounted for translatory movement along a path parallel to the wheel abrasive face. The table is further mounted for measured tilting thereof relative to the wheel face, and for shifting of the table and associated structure completely clear of the wheel to facilitate certain sharpening operations and wheel replacement. With the table pivoted completely away from the wheel, the cutting wheel can be operated in a plane perpendicular to its original operating plane. A pivotal tool guide is removably secured to the table for selective alteration of the angular position of a tool being sharpened.