Abstract: An indexable disposable insert having six contiguous edge faces having alternate acute and obtuse angled corners, cutting edges being formed at the junction of at least one of the hexagonal side faces and each of the six contiguous edge faces, the hexagonal side face forming the cutting edge having a chip breaker extending around the face, the chip breaker extending inwardly from each of the cutting edges, and being tapered in plan configuration behind each alternate cutting edge.

Abstract: The products of this invention are produced in an elongated casting vessel disposed in upright position to receive liquid metal for solidification within an electromagnetic field generating means disposed around the vessel along a portion of its length. The electromagnetic field generating means produces an upward lifting effect on liquid metal in the vessel together with a containment effect wherein the liquid metal is continuously urged upwardly into contact with the lower end of the solidifying product and maintained in a pressureless contact condition with respect to the walls of the casting vessel. In this way, voids and flaws are avoided and fully dense homogeneous products of uniform, small grain cross section result without wear on the casting vessel. The novel products of the invention are long metal bodies which are fully dense and of substantially uniform, fine grain cross section and constant composition throughout in each instance.

Abstract: The new apparatus of this invention comprises an elongated casting vessel disposed in upright position to receive liquid metal for solidification, means for delivering liquid metal into the lower portion of that vessel, heat exchange means associated with the vessel for cooling and solidifying the liquid metal therein, means for removing solidified metal from the upper portion of the vessel, and electromagnetic field generating means disposed around the vessel along a portion of its length. The field generating means includes a plurality of electromagnetic coils for connection to successive phases of a polyphase electric current source to produce a combined electromagnetic upward levitating field effect and a containment field effect on liquid and metal in the vessel. By "levitating effect" is meant that liquid metal is continuously suspended in space and urged upwardly into contact with the lower end of the solidifying product. In this way, voids and flaws are avoided.

Abstract: A three-sided indexable, detachable insert having a positive rake for a cutting tool. The insert has three edge faces and two side faces, each edge face having one or more recesses which extend across the whole of the edge face, substantially transversely to the cutting edge formed where each edge face meets one of the side faces of the insert. The recesses are spaced apart from a plurality of coplanar lands, the number of recesses on each edge face being the same. The width of the recesses is the same as half the width or less than half the width of the intervening lands. Each intervening land is positioned such that is provides in operation a cutting edge to wipe the material left by the recesses of any of the other sides.

Abstract: Apparatus for producing dense homogeneous metal cast in long lengths by introducing liquid metal into the lower portion of a casting vessel in the presence of an elongated upwardly-traveling alternating electromagnetic levitation field that provides a levitation ratio of from 75% to 200% of the weight per unit length of the liquid metal. The apparatus provides cooling for solidifying the metal while moving upwardly through the field, and a withdrawal mechanism for removing solidified metal product from the upper portion of the field. The electromagnetic field producing means is designed to establish an alternating electromagnetic field having a frequency at or near a value F=36.rho./D.sup.2 where F is the frequency in kilohertz, .rho. is the resistivity of the liquid metal column in micro-ohm-centimeters and D is the average diameter of the solidified metal rod product in millimeters.

Abstract: A hand-held electric soldering/desoldering tool has an elongated soldering tip secured to one end of an elongated handle in substantially coaxial alignment therewith by means of a three-point, spring loaded mechanical suspension arrangement resiliently securing the soldering tip to the handle for allowing excessive pressure applied to the handle to be taken up by the spring-loaded suspension thereby preventing such excessive pressure from being applied to a workpiece. The three-point suspension arrangement includes three support members fixed to the handle and having juxtaposed ends passing freely through aligned openings in a support plate attached to the soldering tip. Each support member has a head biased into engagement with the support plate by a coil spring surrounding the support member and disposed between the support plate and handle.

Abstract: A tool holder clamping and unclamping device utilizes a special combination of a Belleville spring biased bolt threading device to actuate a ball detent mechanism to lock a tool holder in the device.

Abstract: Novel electrical capacitors comprise two electrodes separated by a dielectric member, said dielectric member comprising a polymer of at least one polyfunctional acrylate. The capacitor structure may constitute a single dielectric coating separating two electrode layers, or may comprise a plurality of alternating electrode layers and dielectric coatings.

Abstract: A coated carbide insert has a cobalt enriched zone at one decarburized surface, and a thin TiN transition layer over this surface. The cobalt enriched zone and the TiN layer cooperate to support additional thicker layers of hard wear resistant material such as TiC, TiN, and Al.sub.2 O.sub.3.

Abstract: A high stress corrosion resistant metallized capacitor is disclosed having at least one electrode consisting of a metallic bilayer vapor deposited on a dielectric strip. In a preferred embodiment, a layer of aluminum is covered by a second metal layer which is between about 1/6 to 1/12 the thickness of the aluminum layer and is continuous throughout. The aluminum layer extends beyond the second layer in a marginal area.

Abstract: There is disclosed a fluid comprising a mixture of about 5 percent to about 40 percent by volume of a halogenated benzene and about 60 percent to about 95 percent by volume of an alkyl branched chain phthalate ester, said fluid having a dielectric constant greater than the dielectric constant of either of the halogenated benzene or the alkyl branched chain phthalate ester. The dielectric constant of an alkyl branched chain phthalate ester having a dielectric constant above about 4.0 is increased by mixing a halogenated benzene having a dielectric constant above about 4.0 with the alkyl branched chain phthalate ester whereby the measured dielectric constant of the alkyl branched chain phthalate ester having the halogenated benzene therein, is at least 0.25 higher than the dielectric constant of either the halogenated benzene or the alkyl branched chain phthalate ester. The preferred halogenated benzene is trichlorobenzene, and the preferred alkyl branched chain phthalate ester is di-2-ethylhexylphthalate.

Abstract: An electrical capacitor is disclosed comprising a doubly metallized electrode and a metal foil electrode interleaved with a dielectric material. In a preferred embodiment the electrodes and dielectric comprise strips formed into a roll wherein, at each end, one edge of an electrode protrudes beyond the edge of the other electrode and defines a planar roll end. A coating of metal is applied at each roll end to form electrical connections with the protruding electrode edges. The edge of the other electrode is protected from stray particles of the coating applied at each end by a barrier comprising a selected recess distance and/or shielding provided by the dielectric strip.

Abstract: A tuned coriolis, angular rate measuring device includes a substantially hollow, generally annular rotor driven by a high-speed, synchronous spin motor. The rotor is made unsymmetrical by mounting within the rotor near its periphey at least a pair of high density masses, the respective masses being located diametrically opposite one another. The rotor is secured within a gimbal structure which is, in turn, mounted in tuned fashion upon a support housing through a cantilever spring at each end along the gimbal output axis, thereby providing bearingless, frictionless pivots permitting limited gimbal rotation. A pair of piezo-electric crystals is secured at opposite edges of one of the springs for sensing relative angular motion between the gimbal and the housing. The crystals are electrically paralleled so as to cancel any signals resulting from linear movement between the gimbal and housing.

Abstract: Polypropylene glycol dielectric fluids are used to impregnate electrical capacitors and particularly metallized capacitors for improved performance.

Abstract: In a metallized capacitor roll with margin electrodes offset at each roll end, a resistor is placed axially in the roll so that one end contacts an electrode across a margin and the other end protrudes from the roll end to be contacted by the schooping metal at the roll end.

Abstract: An optical fiber position sensor includes an optical fiber cable wound in the shape of a single layer, tightly wound coil, the coil being secured to a first member. A second member, which is linearly movable with respect to the first member, has fixed thereto an LED which is aimed at the coil such that radiation being emitted from the LED is injected approximately tangentially into the coil. Radiation being transmitted through the coil is attenuated as a function of the distance that it travels therethrough and as a result, radiation exiting the coil through the terminations is representative of the location of the movable member with respect to the fixed member.

Abstract: Polypropylene glycol dielectric fluids are used to impregnate electrical capacitors and particularly metallized capacitors for improved performance.

Abstract: An optical fiber position sensor wherein a first member is rotationally movable with respect to a second member. A generally rod-shaped fiber optic cable is provided having two elongated portions in close axial alignment. The interface surfaces of the two portions have equal face angles of approximately 30-35 degrees from the longitudinal axis. One of the cable portions is secured to the first member and the other cable portion is secured to the second member.

Abstract: A visual display system and method for use in converting calligraphic symbology information into raster scanned symbology. The system simultaneously generates and displays calligraphic and raster matrix imagery utilizing the same set of software instructions. The imagery is displayed upon a single, hybrid calligraphic/raster matrix display or separate raster matrix and calligraphic displays. A programmable calligraphic symbology generator utilizes digital stroking techniques that successively generates addressing for a matrix arrayed memory and determines the attributes of both the raster matrix generated and calligraphic generated symbology. The information is stored in a single or a plurality of matrix arrayed memories according to desired symbol attributes and system performance.

Abstract: A system and method for providing a relative velocity sighting reference in an airborne gunsight system. A head-up display (HUD) frames the target in the pilot's line of sight and a computer-driven cathode ray tube (CRT) display projects an array of sighting indices or dots on the HUD. The computer receives air data and target tracking inputs and controls the CRT display so that the sighting array automatically overlays and follows the target and so that the indices thereof move in a direction and at a velocity to describe the motion of the line of sight of the target required for the target to intercept a bullet fired from the aircraft gun. The pilot maneuvers the aircraft to null the relative motion between the target and the sighting indices, whereby the gun is in position to fire.