Abstract: A diameter adjustment oriented balancing system is disclosed for use with small diameter rotary boring heads. The diameter adjustment oriented balancing system includes a rotary boring head with a radially movable tool carrier. The rotary boring head designed to receive a number of removable counterweights in one or more slots precisely aligned in the axis of radial movement of the tool carrier. The diameter adjustment oriented balancing system further comprises a series of boring bars which are designed to be perfectly balanced such that the combination of the rotary boring head and cutting tool holder is perfectly balanced when the center of the cutting tool holder is located at the center of the rotational axis of the rotary boring head.

Abstract: An apparatus is disclosed for accurately positioning a tool within a shrink-fit tool holder. The apparatus includes a combined tool presetter and heat-shrink device. The tool assembly is placed in a precision rotating spindle that is able to travel into a contained location for cooling of the tool assembly subsequent to heating the tool assembly through induction. The apparatus is adapted such that the precision rotating spindle precisely returns to a home measuring position subsequent to cooling for final measurement of the tool assembly. The presetter allows for measurements related to the tool assembly both prior to and subsequent to the shrink-fitting process.

Abstract: A system for mounting a tool in a tool holder for high-precision centering of the tool and positive restraint of the tool from rotation within the holder. The tool holder includes a cylindrical aperture having a diameter slightly less than the diameter of the shank of a cylindrical tool. The tool is installed into the tool holder by heating the tool holder to a temperature sufficient to increase the aperture diameter sufficiently to accept the tool shank. The tool shank is further provided with an angular flat for engagement with a set screw to prevent the tool from being turned in the holder in use. Preferably, a second tool flat is provided opposite the first flat and extending to the end of the tool shank for orientation of the tool by a second set screw during insertion of the tool into the tool holder.

Abstract: The housing of a two station machining device has thereon a stationary jaw and two movable jaws reciprocable between open and closed positions relative to the stationary jaw by a pair of spaced slides that are reciprocable in a recess in the housing beneath the work surface. A piston in the recess has one end thereof secured to one of the slides and has its other end slidable sealingly in an axial bore and counterbore in the other slide. Normally the slides and the piston are retained resiliently in first limit positions in which the movable jaws are disposed in their open positions. Hydraulic fluid under pressure is supplied to the bore in the other slide beneath the head of the piston initially to move the piston and the one slide into second limit positions in which the jaw connected to the one slide is moved to its closed position, and then to move the other slide to a second limit position and its associated jaw to be moved to its closed position.

Abstract: A rotary machine tool holder has therein intermediate its ends a plurality of balancing screws that are mounted in internally threaded blind bores that extend part way into the holder from equi-angularly spaced points about an outer peripheral surface formed on the holder intermediate its ends, and coaxially of an axial bore in the holder. The screws are adjustable along axes disposed substantially tangentially of the axial bore of the holder, and are prevented from projecting radially beyond the outer peripheral surface of the holder by a plurality of cap screws removably mounted in the holder to have the heads thereof restrict the extent to which the balancing screws can be adjusted toward the outer surface of the holder.

Abstract: A machining vise which includes a main body having a recess for guiding movable vise jaws therein is disclosed. The vise also includes a stationary jaw removably mounted at a mid-point on the main body, a first movable slide and a second movable slide. The first and second slides are mounted in the recess for guiding the movable vise jaws, wherein the first jaw is removably mounted to the first movable slide and the second jaw is removably mounted to the second movable slide.

Abstract: A machining vise is disclosed. The machining vise includes a main body having a recess, a stationary vise jaw removably mounted at a mid-point on the main body, a first movable slide and a second movable slide mounted in the recess. A first vise jaw is mounted to the first movable slide and a second vise jaw is mounted to the second movable slide. The vise also includes a drive for moving the first and second movable slides, wherein a controlled release assembly associated with the first movable slide controls the movement of the first movable slide and the second movable slide. The controlled release assembly includes an offset adjustment mechanism and a spring biasing mechanism. The vise further includes a structure for releasably securing the vise jaws to the slides.

Abstract: A removable boring tool cartridge has a cylindrical tool carrier axially adjustable in a bore in a cartridge housing by means of an adjusting screw having a head rotatably adjustable in the bore of an annular thrust bearing, which is secured around the outside thereof in one end of the bore in the housing by an injection molded plastic safety ring. The adjusting screw has an externally threaded shank that projects in radially spaced coaxial relation into a bore in one end of the tool carrier, to the opposite end of which is fastened an insert holder. A plastic sleeve nut is injection molded into the radial space in the bore in said tool carrier to surround and have driving engagement with the externally threaded shank of said screw.

Abstract: A boring head with a longitudinal axis includes a leading cutting portion and a trailing portion. A pair of adjustable work engagement devices are releasably secured to the leading portion by individual fasteners. Individual mechanisms for adjusting the position of each of the work engagement devices in a first direction generally parallel to the longitudinal axis of the boring head, and individual mechanisms for adjusting the position of each of the work engagement devices in a second direction, generally transverse to the first direction, are provided. The first and second direction adjusting mechanisms are positioned coaxially of each other in the boring head. Each work engagement device is adjustable in the first and second directions individually and independently of the other.

Abstract: A tool holder has on its lower end an inverted, frusto-conically shaped bearing surface which is releasably seated coaxially in a correspondingly shaped opening which is formed in the upper surface of a stationary support. Intermediate its ends the bore wall which defines the frusto-conically shaped opening in the support has therein a shallow, circumferential recess, which is connected through a port in the support with a supply of fluid under pressure. In use the lower end of the tool holder is held in the opening in the support solely by gravity; and a tool, which is mounted in the upper end of the holder, is positioned adjacent a conventional gauging device which can measure tooth height and tool runout. Fluid under pressure is supplied to the recess in an amount sufficient to cause the tool holder to be elevated slightly without breaking the seal between the recess and the frusto-conically shaped bearing surface on the tool holder, whereby the tool holder can then be readily rotated manually.

Abstract: The rear wheel of a bike is journaled in a pair of spaced, parallel plates, which are adjustably secured to the outer ends of two pairs of rigid suspension bars, the inner ends of which are mounted to pivot on a cycle frame about axes parallel to axes of the bike's wheels. Two of the bars are pivotal one above the other at one side of the cycle, and two are pivotally mounted in a similar manner at the opposite side of the cycle and are held in lateral registry with the first pair by transverse brackets. One or more shocks are interposed between the frame and one of said transverse brackets to resist upward movement of the suspension bars; and a pair of adjustable leaf springs are mounted at each side of the frame and have free ends engaging a pair of suspension members also to resist upward, pivotal movement thereof relative to the frame.