Abstract: A molten metal transfer device for withdrawing a selected quantity of molten metal from a bath includes structure defining a chamber disposed within the bath, the chamber including a first opening through which molten metal can flow from the bath into the chamber and a second opening through which molten metal can flow outwardly from the chamber. A cup-like bucket is disposed within the chamber for vertical reciprocating movement, the bucket having a generally vertically oriented slot included as part of its sidewall. The device includes a displacement mechanism for urging the bucket laterally toward engagement with the surface of the chamber. The device also includes mechanisms for easily removing buckets and chambers and replacing them with new buckets and chambers.

Abstract: A nozzle construction for jacketed pressure vessels includes a nozzle member which extends through a vessel opening, the vessel portion adjacent the opening and a portion of the nozzle having complementary surfaces. A split ring and bolt arrangement draws the nozzle against a gasket disposed between the complementary nozzle and vessel surfaces.

Abstract: This relates to the mounting of vanes on a runnerhead of an abrasive blasting machine. The face of the runnerhead is provided with slots in which bases of vanes are slid in a generally radial direction with the base having an interlock with the runnerhead so as to retain the vane against movement normal to the face of the runnerhead. This particularly has to do with the locking of the vane base in the runnerhead slot. The pin is rectangular as opposed to the usual circular pin and the outer ends of the runnerhead slot and vane base are provided with cooperating slots and grooves which receive the pin, the pin being inserted in a first groove and slot arrangement at an angle to the axis of the base and then rotated or pivoted into a second groove and slot arrangement where it is locked in place against retrieval. The pin is locked in place by the outward movement of the vane from its pin inserting position.

Abstract: A device for monitoring the flatness or camber of a moving metal strip is disclosed. The device includes a cylindrical roller over which the metal strip travels, which cylindrical roller is independently supported at each end on a plate which is pivotally mounted on top of a housing for two load cells situated on opposite sides of the centerline of the strip product. The projections provided on the underside of the plate bear against the load cells in a manner whereby any difference in tension across the width of the strip may be detected as a difference in pressures exerted on the two load cells.

Abstract: An electrical resistor is described which is comprised of a resistor core having at least one electrically conductive end cap mounted thereon. The end cap is in electrical contact with the butt end portion of the core and electrically insulated from the side, or periphery, portion of the core member. The end cap has an outward-extending radial portion thereon, positioned contiguous to the junction between the core and the cap.The present electrical resistors are produced by forming a resistive core member of a conductor in a dielectric matrix material and an end cap, having an internal contact surface and a receiving portion. The receiving portion is larger than the outside diameter of the core. The end cap has an outward-extending radial position adjacent the receiving portion. The end cap is mounted on the core to place the butt end portion of the core in electrical contact with the internal contact surface of the end cap, but otherwise spacedly within the end cap.

Abstract: A process for manufacturing nuclear radiation shields consisting of neutron-absorbing boron carbide particles embedded in a heat-dissipating copper matrix. Copper is electroplated through a layer of loose, electrically nonconductive boron carbide particles on a metal substrate. The carbide particles may be deposited on the substrate while electroplating, and heat exchanger ductwork may be incorporated. To make cylindrical shields, a cylindrical metal substrate is rotated about its axis giving rise to centrifugal forces which hold the carbide particles on the inner surface and aid electrodeposition. A thermo-mechanical process is described in which boron carbide particles pre-encapsulated with copper are consolidated into a unitary mass on the inner surface of a heated cylindrical substrate with or without the aid of a roller within the cylinder.

Abstract: The invention provides resin compositions which are particularly suitable for utilization in electron cured coated abrasives. The resin systems of the instant invention have been devised to be particularly suitable for the backing fill of a cloth which is to form the base of a coated abrasive. The formation of a treated base cloth for coated abrasive formation by electron beam curing resins creates a product which in addition to being suitable for immediate formation into a coated abrasive by application of grain is further a product which may be stored for later use or sold to other parties that have need for a waterproof stretch-resistant cloth or that make coated abrasives without doing cloth finishing. The invention also encompasses the formation of electron curing resin systems which are particularly desirable for the make coat and size coat utilized in forming coated abrasives.

Abstract: The resistance-heated boat of the present invention is comprised of a heating portion and a crucible portion separated by a heat conducting, substantially non-electrical conducting portion.The heating portion is fabricated of an electrically conductive material capable of being resistance heated to high temperatures. Mixtures of titanium diboride with boron nitride, aluminum nitride or silicon carbide typically provide electrical conductivity in the desired range. Zirconium diboride, mixtures of boron nitride, silicon nitride, aluminum nitride or titanium diboride, or mixtures thereof are also useful.The crucible portion of the boat provides a vaporization surface and is fabricated of materials selected for their ability to provide wettability by the metal to be vaporized, a desired chemical and physical resistance to the metal, or impurities in the metal, to be vaporized and to the vaporization atmosphere.

Abstract: A two part castable ceramic cement having low density, good thermal shock resistance, good temperature resistance and extended storage life. The first and second parts are mixed together prior to use. The first part is a slurry of solids in water. The solids comprise 0 to 10 weight percent organic fibers, about 35 to about 80 weight percent ceramic organic fibers, about 5 to about 15 weight percent colloidal silica and about 3 to about 10 weight percent organic adhesive. The second part is essentially dry and comprises from about 50 to about 100 weight percent calcium aluminate.The invention further includes a method for forming the cement by mixing the two parts and includes the cast cement resulting from casting and drying the mixed first and second parts.

Abstract: Oxide refractory materials (for example, alumina-zirconia mixtures) can be cast to have an extremely fine crystal structure by casting them onto a non-reactive, non-melting particulate solid cooling media of a material other than that of the oxide refractory material (for example, steel spheres having a size ranging from about 5 to about 60 mm). By using steel spheres as the cooling media, the spheres can be removed from the solidified material with a magnet. The solidified material, when crushed and graded, has exceptional utility as an extremely tough abrasive grain.

Abstract: A polymeric composition containing copper flake in sufficient quantities to render the entire thickness of the polymeric composition electrically conductive. The copper flake is treated to remove oxides and reacted with conventional epoxy resins modified with an epoxidized polyol (polyglycol). The formulation not only exhibits outstanding anti-fouling properties but also exhibits anti-sliming properties. The composition is useful as a gel coat and when utilized on ships, boats, and other water craft, a vessel results which requires no additional anti-fouling or anti-sliming treatment for several years. The composition can also be used to great advantage as a liner for pipes and conduits used to transport salt or fresh water where fouling of the pipes is a problem. In one embodiment of the invention, a composition is disclosed which will cure under water. This particular formulation can be used to great advantage in patching holes in copper clad hulls and the like while the vessel is in water.

Abstract: Sintered, spherical composite pellets or particles comprising one or more clays as a major component and bauxite, alumina, or mixtures thereof, are described, along with the process for their manufacture. The pellets may have an alumina-silica (Al.sub.2 O.sub.3 -SiO.sub.2) ratio from about 9:1 to about 1:1 by weight. The use of such pellets in hydraulic fracturing of subterranean formations is also described.

Abstract: In accord with the present invention, a composite ceramic article may be produced by joining separate components of ceramic materials with a cement or brazing compound of finely-divided metal borides, such as Mo.sub.2 B.sub.5, MoB.sub.2, TiB.sub.2, GeB.sub.2, ZrB.sub.2, SmB.sub.6, NbB.sub.2, HfB, VB.sub.2, WB.sub.2 or TaB.sub.2. A particularly useful metal boride for use with silicon carbide is Mo.sub.2 B.sub.5.If the metal carbide parts or components to be joined are sintered, the metal boride cement is selected to have a melting point within 150.degree. C., but less than the sintering temperature of the metal carbide.If the metal carbide parts or components to be joined are unsintered, or an unsintered component is to be joined to a sintered component, the metal boride cement is selected to have a melting point slightly higher than the sintering temperature of the metal carbide components to be joined.

Abstract: An electrical resistor is described which is comprised of a resistor core having at least one electrically conductive end cap mounted thereon. The end cap is in electrical contact with the butt end portion of the core and electrically insulated from the side, or periphery, portion of the core member. The end cap has an outward-extending radial portion thereon, positioned contiguous to the junction between the core and the cap.The present electrical resistors are produced by forming a resistive core member of a conductor in a dielectric matrix material and an end cap, having an internal contact surface and a receiving portion. The receiving portion is larger than the outside diameter of the core. The end cap has an outward-extending radial position adjacent the receiving portion. The end cap is mounted on the core to place the butt end portion of the core in electrical contact with the internal contact surface of the end cap, but otherwise spacedly within the end cap.

Abstract: This invention relates to an electrical element support system that utilizes a series of ceramic hanger elements of generally rectangular cross-section which are adapted to be inserted into a clip which is attached by welding or bolting to the furnace wall. The clip provides bearing surfaces which match surfaces on the hanger element to provide support for the electrical element which is carried at the end of the support. The outer end of the hanger element generally has a hook or other device which is adapted to hold a particular electrical heating element.

Abstract: Copper sulfide ores are processed by a unique series of steps to produce blister copper, while attaining long sought advantages. An initial smelting step is carried out in any desired manner, e.g. according to conventional practice, to produce a molten, copper sulfide matte or white metal. This matte or white metal is then solidified and subjected to a size-reduction step to produce solid particles capable of being injected into a converting vessel in a stream of oxygen, either pure oxygen or air significantly enriched with oxygen. With the matte or white metal injected in this manner, the converting reaction may be carried out on an autogenous basis, with continuous evolution of substantially undiluted SO.sub.2 gas capable of being liquified for use in the production of elemental sulfur or sulfuric acid or for disposal so as to avoid atmospheric contamination.

Abstract: Oxide refractory materials (for example, alumina-zirconia mixtures) can be cast to have an extremely fine crystal structure by casting them onto a non-reactive, non-melting particulate solid cooling media of a material other than that of the oxide refractory material (for example, steel spheres having a size ranging from about 5 to about 60 mm). By using steel spheres as the cooling media, the spheres can be removed from the solidified material with a magnet. The solidified material, when crushed and graded, has exceptional utility as an extremely tough abrasive grain.

Abstract: A ceramic turbine wheel (1), especially such a wheel intended for an exhaust gas driven turbine of a turbocharger for motor vehicles, comprises a body portion (3), blades (2) and hub portion (4). The body portion (4), and optionally the hub portion (3) as well, are provided with hollow central cores (5, 6).

Abstract: This relates to the mounting of vanes on a runnerhead of an abrasive blasting machine. The face of the runnerhead is provided with slots in which bases of vanes are slid in a generally radial direction with the base having an interlock with the runnerhead so as to retain the vane against movement normal to the face of the runnerhead. This particularly has to do with the locking of the vane base in the runnerhead slot. The pin is rectangular as opposed to the usual circular pin and the outer ends of the runnerhead slot and vane base are provided with cooperating slots and grooves which receive the pin, the pin being inserted in a first groove and slot arrangement at an angle to the axis of the base and then rotated or pivoted into a second groove and slot arrangement where it is locked in place against retrieval. The pin is locked in place by the outward movement of the vane from its pin inserting position.