Abstract: A device for sampling heats of molten metal includes a mold cavity which has an inlet which may be in the form of a tube projecting outwardly therefrom with the open end of the tube being closed and sealed prior to the sampling step by a metallic cap which will melt in the molten metal heat. The sealed end of the tube is enclosed within a diffusion chamber having an inlet closed with a cap which will be melted or vaporized by the metal heat and which normally retains a quantity of a suitable oxygen-fixing agent such as aluminum or titanium, for example, within the chamber. Molten metal entering the diffusion chamber immediately melts the fixing agent which is quickly dissolved by and thoroughly diffused through the molten metal in the chamber before the metal cap on the end of the tube melts to permit the molten metal with the oxygen-fixing agent diffused therethrough to flow into the sample-forming mold cavity.

Abstract: In the manufacture of unitary sheet metal can bodies for vacuum-pack two-piece sanitary cans, a high-strength seamless chime is formed at the juncture of the sidewall and unitary endwall of the can body. The seamless chime comprises longitudinally oriented outer, intermediate, and inner wall portions which define outer and inner circular channels about a peripheral portion of the unitary endwall. The remaining endwall panel, with reinforcing profile rings, extends substantially laterally from the inner wall portion of the seamless chime. The endwall panel can flex longitudinally under interval vacuum and pressure conditions without permanent distortion (implosive or bulging) of the can body sheet metal. A radially extended bead is roll formed in the sidewall contiguous to the seamless chime; the diameter of such bead is selected to compensate for the added diameter of a closure seam at the open end of the can body.

Abstract: Metal in sheet or strip form is electroplated in a continuous or semi-continuous process in which a running length of the metal is passed through a bath of electrolyte solution having an anode structure supported therein adjacent the surface or surfaces to be electroplated. The structure of the anode enables use of the apparatus to electroplate strips of various widths without encountering adverse side effects or streaking and enables substantial economies in electrical current. The anode structure is particularly useful in the production of strip steel having a zinc coating on one side only.

Abstract: A cathode structure for use in an electrolytic process in which the article or material to be treated is passed between an anode immersed in an anolyte solution and a cathode immersed in a catholyte solution separated from the anolyte solution by an ion-permeable membrane. The cathode structure includes means for flowing the catholyte solution over the charged cathode surface at a rate sufficient to remove gas which is evolved on the surface and to control the temperature of the solution to protect the membrane separating the two electrolytic solutions.

Abstract: Manufacture of a perforate screening member having a structurally strong substrate supporting a layer or coating of abrasion-resistant elastomer, the elastomer having perforations coincidental with perforations in the substrate, the perforations in the elastomer in some cases being smaller in cross sectional area than the perforations in the substrate and in some cases having sidewalls which taper downwardly and outwardly, by forming a layer or coating of flowable, hardenable elastomer on the upper surface of the substrate while the substrate has its perforations blocked by forms which project through the layer of elastomer, the upper section of the form in some cases being of smaller diameter throughout the thickness of the layer of elastomer than the diameter of the substrate perforation and in some cases tapering upwardly and inwardly.

Abstract: A pollutant collection and removal system is provided for use with a horizontally arranged battery of coke ovens. A receptacle having a coke entry opening is positioned in front of the coke guide and receives the total coke pushed from an oven and a hood carried by the support for the coke guide substantially encloses the coke guide and overlies the coke entry opening and enshrouds the discharged coke and pollutants generated during the coke pushing operation. Means are provided for distributing the coke within the receptacle while said receptacle is being maintained stationary (i.e. one-spot) for quenching and, after the pushing operation, the receptacle is moved from the coke guide and transported to a quenching station.

Abstract: A method for analyzing the latent gas content of metal samples, particularly the oxygen content of solidified samples of molten steel, which includes charging a crucible in a heat extraction furnace with a metal test specimen and sufficient metallic germanium to cause wetting of the specimen upon heating and disassociation of metallic oxides (or other metallic compounds including latent gaseous constituents) in the test specimen such that gases evolve and are quantitatively measured in conventional apparatus. When a test specimen is analyzed for oxygen content the evolved gas will be principally carbon dioxide, which is usually measured in a gas chromatograph.

Abstract: Manufacturing process for ferrimagnetic materials and pressure compacted soft ferrite components utilizing a "wet" process for compositional preparation of materials in which metal carbonates and metal hydroxides are coprecipitated in controllably selected ratios.An aqueous solution of metal ions is formed by dissolving pure metals in acid. This aqueous metal ion solution is added to a predetermined solution of carbonate ions and hydroxide ions. Concentrations, temperature, and rates of addition are controlled to select the ratio of carbonate groups to hydroxide groups in the coprecipitated particles and the size of such particles.The controllably selected ratio of carbonate groups to hydroxide groups facilitates separation of the coprecipitation particles and maintains residual hydroxide groups in the material so as to extend solid-state reactivity of the coprecipitated particles for grain growth and densification purposes until the final heat treatment in which the pressure compacted articles are sintered.

Abstract: In the production of a seam-free can body from a sheet of flow brightened electrolytic tinplate by a method involving cold forming which includes a drawing step alone or a drawing step plus a redrawing step or plus a wall ironing step to produce a cold formed cup having inherently poor corrosion resistance, the improvement which comprises heat treating the cold formed cup at a temperature ranging from about 400.degree. to about 448.degree. F. for a period of time between about 10 minutes at the lower end of the temperature range and about 10 seconds at the upper end of the temperature range.

Abstract: Articulated railway service wheel with structurally distinct rim, web, and hub. A toroidal rim is interconnected to the hub by a rod-like web defining individual spring units which respond in tension and compression to vertical and lateral loading. The spring web units are seated in rim and hub socket means which prevent relative rotational movement. A unitary hub-axle is also provided.

Abstract: In continuous casting of aluminum base alloy in sheet form where the alloy comprises small but effective amounts of silicon, iron, manganese, magnesium and copper, an objectionable amount of edge cracking has occurred in the product. This has necessitated side trimming the sheet with the resultant cost of the edge shearing operation and wasted energy in melting the scrap. Applicants have discovered that by increasing the iron and manganese contents of the alloy and decreasing the silicon and magnesium contents, edge cracking can be eliminated or reduced to the point where edge shearing can be eliminated or significantly reduced.

Abstract: A continuous cold reduction mill for metal strip in which the trailing end of a metal strip passing through the mill is welded to the leading end of a metal strip coming off a new coil without stopping the mill, the trailing end portion of the metal strip passing through the mill being paid out from a metal strip storage system during the welding operation with a resulting loss of close control of the lateral metal strip position at the entry side of the first mill stand, the present invention providing means associated with a metal strip back tensioning unit ahead of the first mill stand for correcting the lateral position of the metal strip issuing from the metal strip storage system while applying the tension of the metal strip in the metal strip storage system to the metal strip entry side of the back tensioning unit.

Abstract: A reliable, inexpensive drill attachment for positioning a portable power drill relative to an article to be drilled includes adjustable means for aligning the attachment relative to the axis of the drill and an improved base for supporting the drill to accurately align and hold the drill axis in a normal position relative to a flat surface to be drilled or to a cylindrical or compound curved surface such as a spherical surface. A plurality of feet are positioned at various locations on the base to enable the attachment to adapt to various surfaces.

Abstract: Bracing apparatus for supporting vertically disposed structures, in particular wall constructions, prior to their connection with other components of a construction system. The apparatus includes an anchoring member, secured to a lower portion of the wall to be supported, through which a stay member, e.g., cable, is guided and each end of the cable is connected to distal end portions of a diagonal member. The anchoring member is first secured to the wall and the cable is threaded through a guide portion of the anchoring member. The diagonal member is then placed so that one end contacts the wall and the other end is supported by the surface adjacent to the wall. Each end of the cable is then attached to end portions of the diagonal member and tension applied to the cable by means of a turnbuckle or winch so that compressive forces are simultaneously exerted against the wall and the adjacent surface.

Abstract: Molten metal sampling device for and method of sampling molten unkilled metal, especially steel, to produce a sound, non-porous, solidified test sample suitable for analysis in which metallic germanium is present in the sampling device in a quantity sufficient to kill the molten metal of the sample.

Abstract: Humidifying composition is introduced into a portable gas sterilizer in droplet form. The composition is packaged in an aerosol can and comprises water, preferably water and organic solvent. Automatic controls effect a predetermined relative humidity in the sterilizer before initiating sterilizing gas introduction.

Abstract: A method and apparatus for the excitation and spectral calibration of acoustic emission systems in which a helium or other gas jet is used as a calibration source which makes no mechanical contact with the specimen or structure under examination. The gas jet which simulates an acoustic emission event, is sprayed on a reference material which is acoustically coupled to either an acoustic emission transducer or to a transducer having a flat frequency response up to 1 MHz. The transducer spectra are measured in decibels and subtracted from each other thereby obtaining a "transducer calibration". The "calibrated" transducers are then coupled to a specimen under test, the gas jet is applied and a "gas jet system spectrum" is measured. The spectrum of acoustic emission activity is then measured and corrected by subtracting, in decibels, the "gas jet system spectrum", thereby obtaining system independent acoustic emission spectral information which can be used to compare results in other systems.

Abstract: When the packing rings about the large bell rod in a double bell blast furnace charging system become worn, a new seal is established about the large bell rod above the worn seal without requiring shutdown of the furnace or removal and replacement of the worn seal and bell rod. This is achieved by forming an enclosure in situ about the large bell rod directly above the worn packing to entrap leakage past the worn packing in the enclosure, and by providing a new seal assembly including new packing rings about the large bell rod in the upper end of the enclosure where the large bell rod emerges. The upper end portion of the enclosure is secured relative to the large bell rod by brackets projecting outwardly from the enclosure to a point where they are fastened to hanger rods conventionally utilized to raise and lower the small bell rod.

Abstract: A strip handling apparatus and method which prevent slipping and weaving of strip in strip tensioning units and achieve close control of tension on strip entering a drag strip tensioning unit and leaving a drive strip tensioning unit.

Abstract: A dross press is provided for separating molten zinc from the dross scooped from the top or from the bottom of a molten bath of zinc in a zinc pot used in a zinc coating process. The press is mounted above the molten metal pool in the pot in a position so that zinc may be expressed from the dross that has been collected in a hand ladle to be squeezed through the perforations in the ladle to fall into the pool maintained in the zinc pot. Alternatively, the press may be mounted so that the reclaimed metal is expressed through the perforations into other receptacles, including molds suitable for weighing, sampling, etc.