Abstract: Poppets of lift valves are ground in a grinding machine wherein the chuck clamps the stem midway between the head and the foot of the poppet and is indexible through 180.degree. so as to place the foot into the range of a first portion of the working surface of a grinding wheel in one of its positions and to place the head into the range of another portion of the working surface of the same grinding wheel in the other of its positions. The entire working surface of the grinding wheel is dressed during grinding of the head, and the carriage for the spindle of the grinding wheel is moved in response to signals which denote the final position of the grinding wheel upon completed grinding of the foot. The chuck is indexible in a rotary work holder whose axis coincides with the axis of the clamped poppet and is normal to the axis about which the chuck is indexed by a rack-and-pinion drive.

Abstract: Apparatus for the manufacture or machining of straight of helically toothed gears with a hyperboloidally or globoidally or similarly formed toothed tool, which has an abrasive or similar surface and which has such an axial dimension that it covers the entire width of the workpiece tooth system. The axes of the workpiece and the tool cross and the workpiece and the tool are coupled to a guide gearing. The workpiece-tool pairing and the guide gearing each have their own (separate) crossed-axes point. Interchangeable gears can be provided between the workpiece-tool pairing.According to a different embodiment, the axis of the guide gearing and the workpiece axis are arranged parallel to one another, also to another axis of the guide gearing and the tool axis. The parallel axes are coupled to one another through master gears and interchangeable gears.

Abstract: A novel method of forming a finishing chamber by inserting a cylindrical tube into a corresponding opening in the bottom of a dished tank head having a bottom and an upwardly-extending outer wall, inserting a cone-shaped gusset or collar having an outwardly and downwardly-extending skirt and an opening in the top thereof, corresponding to the circumference of the cylindrical tube, over the tube and with its outer circumference in contact with the tank head, and welding the tube to the tank head and to the gusset and the gusset to the bottom of the tank head, thereby simply to provide the essentials of a finishing chamber, is disclosed. The outer wall of the finishing chamber may be extended by welding a sheetform annular ring to the top of the outer wall of the tank head, and the chamber may be lined with elastomer and fitted with a screen deck.

Abstract: An accoustically detonated explosively separable link comprising a pair of bolt assemblies mounted in spaced operative relation within the separable link parts, each of which includes a bolt having a cavity therein. An explosive is provided in each cavity and an electrically actuated exploding bridge wire is connected with each explosive for detonating the same. A miniaturized acoustical receiver assembly is mounted within the link parts and includes a hydrophone for receiving a transmitted acoustical detonation signal, batteries and circuitry operatively connected with the hydrophone, the batteries and exploding bridge wires for conducting an electrical current from the batteries to the exploding bridge wires in response to the hydrophone receiving a transmitted acoustical detonation signal.

Abstract: The invention relates to a wide belt sander for the treatment of surfaces of materials where the sanding belt 3 is provided on the sliding contact 6 pressing against the blank 1 with air discharge perforations 10 and 11 provided on the lower side of the sliding contact for the formation of a dynamic air cushion 18 between sliding contact 6 and sanding belt 3. A pair of shims are located on opposite sides of the sliding contact 6 and are aligned with the lateral edges of the sanding belt to provide sliding surfaces for the edges and a sealing edge for the air cushion.

Abstract: A geological core sample is slabbed by advancing the sample against a horizontally oriented bandsaw blade. A receiving tray positioned immediately adjacent and to the rear of the bandsaw blade provides continuous support to the upper portion of the slab as it is cut from the sample and maintains the integrity of friable and unconsolidated materials.

Abstract: The grinding wheel infeed control method provides a constant infeed rate calculated on the average electrical power consumed by the wheel drive motor in rough grinding an immediately preceding workpart. Each subsequent workpart is rough ground at a constant infeed rate established from the wheel drive motor power consumption of the immediately preceding workpart until the grinding wheel is in need of re-trueing or re-dressing. The first workpart ground after wheel re-trueing or re-dressing is ground at a rough (high) infeed rate which is continuously varied by the machine control computer so as to maintain the electrical power consumed by the grinding wheel drive motor substantially constant at a preset level and from which the constant infeed rate for the second workpart is determined.

Abstract: A trimmer for dry shavers having cutting screen mounted integral with the appliance and a cutter movable reciprocally along said cutting screen, formed of a cutter blade and a support. The support of the cutter is manufactured by the injection-molding technique and the cutter blade is injection-molded onto it when manufactured. Recesses of different shapes with central constrictions are provided in the cutter blade to receive the support material, said constrictions, despite the shrinkage of the support material, ensuring a secure zero-play material connection between the support and the cutter blade.

Abstract: The work supporting unit or units on the stationary or reciprocable work supporting table of a plain grinding machine are adjustable with reference to the table by one of the existing numerically controlled drives, such as the drive which reciprocates the table with reference to a stationary base or the drive which reciprocates a carriage for the grinding wheel relative to a stationary table. The locking device or devices which normally fix the adjustable unit or units to the table are disengaged and the unit or units are separably coupled to the reciprocable part (table or carriage) by suitable detents which can be engaged or disengaged by numerically controlled drives or by an existing drive such as the drive for a slide which is reciprocably mounted on the reciprocable carriage and supports the grinding wheel.

Abstract: A hone stop assembly for use with a honing tool in reconditioning the cylinder bores of an internal combustion engine block. The assembly includes a frame mountable to an engine block, a disk-shaped hone stop, and suitable adjustable connections from the hone stop to the frame to allow the stop to be selectively positioned adjacent to an end of a cylinder bore. A honing tool inserted from the other end of the cylinder bore will contact the hone stop rather than any engine castings adjacent to the end of the cylinder, preventing damage to the honing stones and facilitating accurate reconditioning of the cylinder walls while reducing the tendency of the mechanic to taper the cylinder walls.

Abstract: Drilling apparatus for trepanning a difficult to work material. A drill member includes a very thin wall cylindrical cutting head integral with a shank portion, with the assembly being machined from the same piece of stock to insure concentricity. A fluid supply collar includes lower and upper Teflon washer inserts which surround the shank portions and which are held in place respectively by a shoulder of the cutting head and a chuck or other holder of a machine which rotates the drill member. Fluid supplied to the collar is directed through radial and axial passageways in the drill member to the lower margin thereof, and which lower margin includes a continuous abrading surface on the inside, outside and edge thereof. The length of shank extending from the holder is extremely short due to the dimension of the collar thereby resulting in high stiffness to insure for concentricity during drilling operations.

Abstract: A diamond saw for cutting hard materials, in which a steel plate is fixed with a sintered abrading body consisting of diamond abrasive granules and a bonding metal powder, characterized in that a plurality of grooves are provided on the surface of both the front and back side faces of the sintered abrading body.

Abstract: In dressing a grinding wheel having a non-cylindrical contour, the wheel is moved in a path corresponding substantially to the desired wheel contour by first and second CNC controlled slides while a single point diamond or diamond roll dresser is rotated by a CNC controlled rotary mechanism through selected angles during traversal of the wheel therepast to maintain a vertical reference plane containing the centerline or mid-plane of the diamond dresser point or radius substantially orthogonal to a vertical reference plane containing a tangent to the wheel contour path. Maintenance of the orthogonal relationship between the single point diamond dresser point or radius and wheel contour path during traversal results in the desired wheel contour being accurately dressed.

Abstract: A simple, unitary tool which facilitates placement of shimming tape in the finger holes of a bowling ball and additionally can be used to enlarge the finger holes of such bowling ball. The tool comprises an elongated member and a pair of arms connected to such member. The arms respectively have a portion parallel to and spaced from the elongated member, the dimensions between such portions being less than the diameter of a bowling ball finger hole. A tape shim is threadable over the elongated member and under the arms to be retained thereby. The elongated member, with a threaded tape shim may be inserted into a bowling ball finger hole, pressed against the wall of such finger hole to transfer such tape shim to such finger hole to shim the finger hole, and then removed, leaving such tape shim properly secured to such finger hole. Additionally, the elongated member may include an abrasive surface portion spaced from the pair of arms.

Abstract: An apparatus for slide grinding has a slide-grinding container which is movable upwardly from a slide-grinding position thereof around a horizontal tilt axis into an emptying position thereof above a screen which is adapted to be placed in vibration and is arranged in an upper region of a collection container which is tiltable into an emptying position above the slide-grinding container. A collection chamber of the collection container below the screen has a first chute which terminates above the slide-grinding container in the emptying position of the collection chamber. The chute defines an emptying opening for returning abrasive bodies which have fallen through the screen into the slide-grinding container. The slide-grinding container and the collection container are individually tiltable and the screen is developed as a screen chute which vibrates relative to the collection container.

Abstract: A sheath for deadening the sound of at least one circular blade for cutting marble, granite and hard stone consists of at least one structure of "Bakelite" or other sound deadening material, the structure forming at least one cavity of discoidal shape. The cavity provides a housing for at least one rotating cutting blade. The cutting blade may be provided with teeth along its periphery, thereof. The sheath may comprise of two hollow structures of great thickness connected by threaded rods forming between themselves, two cavities of discoidal shape, in which the cutting blades rotate.

Abstract: A grinding machine for grinding a ball end mill which has a cutter teeth of a plain or frustconical shape in the circumference thereof and a cutter teeth of spherical shape in the tip end thereof. The grinding machine comprises a turntable for a spindle through an angle .alpha. of turning movement having a reference position in which the spindle extends parallel to an X-axis in a pattern of tan .gamma..multidot.F(.alpha.

Abstract: A combined nozzle and air foil for providing a flow of cooling and cleaning fluid to a rotating cutting blade providing cutting of a substrate. A nozzle portion for location intermediate the cutting blade and the substrate. The nozzle portion including at least one opening for directing a flow of cooling and cleaning fluid to the blade and to the cut area of the substrate. An elongated air foil portion mounted above and extending from the nozzle portion to be cut by the cutting blade to form an air foil on both sides of the cutting blade. The air foil producing a partial vacuum below the air foil and adjacent the opening in the nozzle to provide an efficient flow of the fluid to the blade and the cut area of the substrate. The combined nozzle and air foil portions are movably mounted to have the air foil engage the cutting blade to custom cut the air foil to match the dimensions of the cutting blade and to provide the proper location of the nozzle to direct the flow of the fluid.

Abstract: A sanding, buffing and polishing tool per the invention includes a pad affording means for the mount of an abrasively surfaced device utilizing a hook and loop type fastener structure or its equivalent for their interconnection. The pad in its preferred embodiment comprises a front face and a rear face with the major portion of the front face being essentially planar in configuration and the plane thereof perpendicular to the axis of rotation of the pad. Said major portion of the front face is inset or recessed relative an annular portion thereof which is defined by the projected extremity of a relatively narrow cylindrical wall structure which is generally perpendicular to the plane of said major portion and defines therewith a shallow cavity. The hook portion of the hook and loop fastener is securely fixed over and coextensively with said major portion of the front face of the pad to nest essentially within the limits of said cavity and the axial extent of said cylindrical wall structure.

Abstract: A pneumatically-powered hammer for giving concrete surfaces a rough texture and an efficient method for using the hammer. The hammer comprises a pneumatic riveting hammer with a uniquely short and blunt-ended accessory secured thereto. The pneumatic riveting hammer uses, for example, a 11/2 inch piston and is activated by increased air pressure thus assuring a rapid, forceful stroke. Operation of the hammer includes holding the blunt end of the accessory securely against the concrete surface to be textured while moving the hammer horizontally across the surface in short vertical strokes during the entire time the hammer is activated. Excessive gouging and corner chipping caused by the hammer are repaired by partially filling such gouges or chips with wet, fast-setting concrete and securing leavings broken away by the hammering process to the wet concrete such that the repaired gouges and chips match the remainder of the surface in color and texture.