Abstract: A height-adjustable table for supporting a patient during medical examination or treatment in which a patient support table top mounted on a carrier 2 is connected to a base 3 by a parallelism maintaining linkage comprising a diamond or rhombus shaped linked assembly of four mutually pivoted equal struts 6, 7, 8, 9, pivotally attached top and bottom to the carrier 2 and to the base 3, and intermediately to the centers of first and second struts 17, 18 which are attached at their ends for free rectilinear displacement, to slides 20, 22, 24, 26, mounted on the carrier 2 and the base 3. Inextensible diagonal links 30, 32 connect diagonally opposed slides 24, 22 and 20, 26, to form an assembly of good horizontal and vertical stiffness even at the maximum height adjustment which is effected by e.g. a screw jack 5.

Abstract: An automotive separating tool that is used for separating ball joint connections, tie rods from steering arms, and other similar parts and that has wedge shaped head, with a pair of projecting prongs, and a handle. The head and handle are removably secured together by a threaded connection so that different sized heads may be used either with a handle designed to be struck by a hammer or with a handle designed to be driven by a conventional air hammer.

Abstract: There is disclosed a grinding machine in which a component of circular cross-section is capable of being ground, the component being supported at points on its periphery during grinding, said machine including (i) an analysing means whereby periodic irregularities in the periphery of the component as it is being ground may be detected and analyzed to determine the periodic adjustment in the position of the component necessary to eliminate, during grinding, the detected periodic irregularities, said analyzing means including means for producing a signal indicative of the adjustment necessary and (ii) means for periodically adjusting the position of the component in response to the signals from the analyzing means thereby to cause said periodic irregularities to be eliminated.

Abstract: A Multiple Bit Screwdriver has a handle with a plurality of bits in a circular array of longitudinal bores within a handle magazine. A rotatable end cap on the handle is provided with a slot for receiving the bit, and the desired bit is selected by rotating the end cap to align the slot with a particular bore. The selected bit is withdrawn from the magazine by inserting a second bit into the bore through the slot in the end cap, thereby forcing the selected bit out of the bore through the opposite end. The bit is retained in working position on the screwdriver shaft by magnetic means. Double-ended bits may be utilized.

Abstract: An optimization method of dressing a predetermined profile on the periphery of a grinding wheel of the type used in form grinding. A dresser is guided along a path corresponding to the predetermined grinding wheel profile in successive, identical cycles of motion. The grinding wheel is fed into the path in increments between cycles. The dresser contacts the periphery of the grinding wheel during movement along its path, with the duration of contact increasing in each cycle until the predetermined profile is produced. The duration of contact during each cycle is monitored. When the difference between the duration of contact in a given cycle and the duration of contact in the previous cycle is zero or negligible, dressing is complete. Apparatus for practicing the method is also disclosed.

Abstract: A vise for clamping a workpiece in an adjusted position during operation on the workpiece by a tool, particularly the cutting wire of an electric wire cut discharge machine. For maintaining accuracy of the clamped workpiece and still occupying a minimum of space by the vise within the working range of the machine tool the vise is provided with a first fixed jaw and a second jaw movable along ways forming a reference surface. Wedging abutment surfaces and abutting surfaces are formed on the bed of the vise and on the second jaw, respectively, which engage during clamping the workpiece for preventing bending of the ways which allows a low profile construction of the vise.

Abstract: A holding device or lock in a machining vise for positioning plates including parallels and angles wherein the positioning plate is provided with a cleat extending from the rear surface along the bottom edge thereof. The plates are held in place by spring loaded engaging members. A recess in the machining vise, complementary in shape to the cleat, may be provided.

Abstract: A staple remover for removing staples from stapled materials utilizing an inclined plane in combination with a gripper. First and second jaws are provided, each have two jaw members. The two jaw members of the first jaw are spaced from each other just less than the width of a staple. The two jaw members of the second jaw are spaced from each other less than the spacing of the jaw members for the first jaw so that the second jaw may insert within the first jaw. The first and second jaws are connected together by a pivot and are resiliently biased in an open position. Each of the jaw members of the first and second jaws terminate in a pointed extremity. Each of the jaw members of the first and second jaws further have an upper and lower cam surface which smoothly diverge from each other rearwardly from the pointed extremity.

Abstract: In a beam or pipe clamp, each of a pair of clamp jaw extenders is loosely coupled to a basic clamp jaw member and threaded onto the beam of the clamp so that the extenders oppose each other, between the basic jaws. Extender form may be chosen to provide greater capacity in terms of a deeper thrust between the clamp jaws or accommodation for irregularly shaped workpieces or both. Fit of the extender on the beam controls extender alignment relative to the beam and ensures that, while the basic jaw member may receive axial clamping forces, "tipping" force imposed on the extender is transferred directly to the beam.

Abstract: An arrowhead extractor apparatus for removal of an arrowhead embedded in a workpiece. The arrowhead extractor includes a threaded shaft with a threaded bore at a first end and a handle at a second end. A removable insert fits into the threaded bore. The removable insert includes a threaded bore for engaging the threaded shaft of an arrowhead. A sleeve is slideable along the shaft. The sleeve has a surface for engaging the workpiece and has a central opening through which the arrowhead can pass. An attachment is provided for adjusting the surface of the sleeve to conform to an uneven workpiece surface. A nut threadedly engages the threaded portion of the shaft. The nut engages the sleeve and moves the sleeve relative to the shaft in response to rotation of the nut.

Abstract: In an apparatus for lapping a wafer material, e.g., a semiconductor silicon wafer, by bonding the wafer to the lower surface of a pressing plate, mounting the pressing plate on a turn table to bring the wafer into contact with the turn table and pressing the pressing plate downwardly with a downwardly opening cup-like top ring mounted thereon, the pressing plate is pressed down not directly with the top ring alone but pressed through a rubber membrane covering the downward opening of the top ring and pressurized with compressed air under pressure regulation so that the lapping pressure on the wafer surface can be very uniform and the thus lapped wafer is excellent in respect of the flatness of each lapped surface and parallelism between lapped surfaces.

Abstract: A hand-held sanding device for use with sandpaper or other abrasive sheet material is disclosed. The sander is characterized by a generally cylindrical body of tough rugged semi-rigid resilient material having an arcuate outer face adapted to engage the back surface of a piece of abrasive sheet material. The sanding device includes means for securely holding the abrasive sheet material in tight abutting engagement with the outer face of the body. Several alternative forms of sander body are disclosed along with several different means of securing the abrasive sheet material to the bodies.

Abstract: A tool and machine for removing fasteners from a workpiece. The tool includes a two-piece housing with a shaft slidably positioned therein. The upper part of the housing slides relative to the lower part and serves to support the shaft as it is urged into the fastener to dislodge it from the workpiece.

Abstract: A roll (16) for a corrugated board manufacturing machine (10) comprises a shell (32) defining an inner suction chamber (56) permanently connected to a source of low pressure. A series of radial suction apertures (60) open onto the peripheral surface (58) of the shell. According to the invention, the roll comprises a series of axial ducts (80) provided in the body of the shell (32) in which permanently circulates a heat-carrying fluid for heating the shell.

Abstract: A strip tensioning system for a strip peeling machine is arranged to control the tension exerted on a metal strip being peeled from a rotating billet by a cutting tool. Regulation of the peeled strip tension at the cutting point operates to control the thickness and shape of the peeled strip.

Abstract: The method according to the present invention, permits to smooth and polish automatically and semicontinuously slabs of marble, granite and stones of every type while improving substantially the uniformity of smoothing and polishing of the surfaces being worked on and also obtaining substantial increase in the hourly production.

Abstract: A cutting insert for chipforming machining of metal workpieces is disclosed, said insert comprising opposed top and bottom surfaces (11) and (12) and a peripheral wall (13) extending therebetween. The insert has cutting edges at the juncture between at least the top surface and said peripheral wall, a land area (15), and a first descending surface (16) starting from the top inner margin of said land. A number of convexly curved spaced projections (23, 26) being formed on or adjacent said first descending surface, the upper surface of each of said projections being planar and located below the plane defined by the cutting edges (14).

Abstract: A pair of guides having long grooves on the upper surfaces thereof for engaging optical fibers, a pair of fulcra formed in parallel with the long grooves of the guides for supporting the guides, a pair of centering stands having substrates for supporting the fulcra, a pair of centering mechanisms having load imparting mechanism sections having telescopic output ends, load imparting mechanism sections, and transmitting mechanism sections for the adjusting mechanism sections so that the long grooves of said centering stands are disposed adjacent to each other to align in a rectilinear line. The centering mechanisms are associated with the centering stands to contact the output ends of the centering mechanisms with the guides of the centering stands.

Abstract: A rupturable can member (10) of sheet metal has a pair of scorings (16) which define a tearing strip (18) laterally. Welded onto the tearing strip (18) is a tongue (20) which has a thickened portion (24) at its welded-on end (22). This thickened portion is formed by a margin folded back towards the other free end (26) of the tongue (20).

Abstract: Automatic calibration equipment for planar grinding machines comprises a measuring head (12) fixed to a table (4) of the associated grinding machine for measuring the distance between this table and the grinding wheel (6), and an electronic measuring and control apparatus (14) for receiving the output signal of the measuring head and producing signals controlling the forward and rearward movement of the grinding wheel. The measuring head comprises a pneumatic circuit with a first branch of very low internal volume provided with an inlet nozzle and a measurement outlet nozzle (48) oriented to blow towards the edge of the grinding wheel, a second branch provided with an inlet nozzle and a reference nozzle, means for connecting the inlet nozzles of these branches to an installation (18) delivering compressed air at regulated pressure, and a pressure-differential transducer with a semi-conducting element for detecting the difference between the pressures in the two branches.