Abstract: A reactor for the production of carbon black is disclosed which is characterized by axial flow of combustion gases and sequential converging sections for sequentially accelerating the hot combustion gases used to drive the pyrolysis reaction.

Abstract: A method of treating filaments in order to increase their wettability by molten magnesium or an alloy thereof. The filaments are treated by coating them with particulate molybdenum trioxide, chromic oxide, ferric oxide or nickel oxide and subsequently infiltrating them with molten magnesium or an alloy thereof.

Abstract: An applicator for use by an operative in applying a liquid spray of chemicals, insecticides, herbicides or the like to growing plants, shrubs, or weeds. The applicator is comprised of a carriage, constituted of a frame provided with a pair of alternately disposed wheels mounted on an axle located at the lower end of the frame, and handle located at the upper end of the frame. A tank within which liquid can be provided is detachably mounted and supported upon the lower end of the carriage. The tank contains a pumping assembly, and the pump can be activated to pressurize the liquid. A spray nozzle assembly, inclusive of a pivotally movable spray nozzle is operatively communicated with said tank for the transfer of liquid from the tank to the spray nozzle for application to the growing plants, shrubs, or weeds.

Abstract: The present invention provides, among other things, a plenum which is formed around the hot zone chamber of a vacuum furnace and which has a common wall with the hot zone chamber. The present arrangement includes having a plurality of apertures formed in the common wall and a plurality of baffles, or deflecting means, secured to the common wall within the chamber of the plenum. The baffles, or deflecting means, are formed to be angular with respect to the common wall and each deflecting means is disposed and formed to deflect gas (in all likelihood, inert gas), passing through the plenum, into and through an associated aperture and thereby into the hot zone chamber. By using the baffles, the inert gas, which is fed into the hot zone chamber from the plenum, is so fed with improved and significant uniformity.

Abstract: The present invention includes a plurality of ceramic oxide wall panels which are defined by a thickness dimension, depth dimension, and width dimension. The ceramic oxide panels are beveled along their width sides so that when they are held together along their width sides, they form a closed plane, that is a polygon or a substantial circle configuration. At each abutment position of two adjacent wall panels, there is formed an abutment angle. In addition a plurality of overlap support panels of ceramic oxide is employed and each is formed to have an angle which fits over an associated one of said abutment angles. Each overlap support panel is secured to, and partially overlays, two abutting wall panels, thus providing support for said two adjacent abutting wall panels. In a preferred embodiment each overlap support panel abuts two adjacent support panels.

Abstract: (6R,7R)-7-amino-3-(1-pyridiniummethyl)ceph-3-em-4-carboxylate dihydrochloride and its solvates are prepared in substantially pure form and can be acylated by conventional methods to yield a wide variety of cephalosporin antibiotics. The dihydrochloride is advantageously prepared in the form of its crystalline dihydrate. Processes for the preparation of the dihydrochloride and its solvates are described.The dihydrochloride and its solvates are particularly useful in the preparation of (6R,7R)-7-[(Z)-2-(2-aminothiazol-4-yl)-2-(2-carboxyprep-2-oxyimino)acetami do]-3-(1-pyridiniummethyl)ceph-3-em-4-carboxylate, in the course of the preparation of which the novel N,N-dimethylformamide solvate of (6R,7R)-7-[(Z)-2-(2-tritylaminothiazol-4-yl)-2-(2-t-butoxyprop-2-oxyimino) acetamido]-3-(1-pyridiniummethyl)ceph-3-em-4-carboxylate may be isolated in substantially pure crystalline form.

Abstract: The present invention is directed to graphite shields (or shields of other materials which may react chemically or be oxidized in a vacuum furnace but which when condensed do not readily conduct electricity) or graphite shield liners used to protect electrical insulating devices from having electrical shorting path means develop thereon.

Abstract: The present invention is a duct arrangement for use with a vacuum furnace to permit inert gas to be supplied continuously to the hot zone enclosure of a vacuum furnace. The novel duct arrangement includes a plenum means that, in the preferred embodiment, is formed so that its inside wall is the outer wall of the hot zone enclosure and which is disposed to be wrapped around 95% of the hot zone enclosure (within the vacuum chamber) with which it is employed. The plenum is sealed at both ends and is formed to have a plurality of holes in the common wall of the hot zone enclosure and the plenum. Into each of said holes there is fitted a removable nozzle member. A relatively large hole is formed in the outside wall of the plenum to permit inert gas to be fed into the plenum and through the nozzles into the hot zone enclosure to cool the work piece therein.

Abstract: Three or more receiving antennas are arrayed in a triangle that in turn is oriented in the same generally defined plane as a scanning RF beam emitted by a distant source of radar or other RF transmission, which is to be located. Signals received by the arrayed antennas are coupled to signal processing circuitry which measures the various time intervals (or differentials) that it takes for the source transmission to sweep through the angles subtended, at the source, by different spaced-apart pairs of the arrayed antennas.

Abstract: (6R,7R)-7-amino-3-(1-pyridiniummethyl)ceph-3-em-4-carboxylate dihydrochloride and its solvates are prepared in substantially pure form and can be acylated by conventional methods to yield a wide variety of cephalosporin antibiotics. The dihydrochloride is advantageously prepared in the form of its crystalline dihydrate. Processes for the preparation of the dihydrochloride and its solvates are described.The dihydrochloride and its solvates are particularly useful in the preparation of (6R,7R)-7-[(Z)-2-(2-aminothiazol-4-yl)-2-(2-carboxyprop-2-oxyimino)acetami do]-3-(1-pyridiniummethyl)ceph-3-em-4-carboxylate, in the course of the preparation of which the novel N,N-dimethylformamide solvate of (6R,7R)-7-[(Z)-2-(2-tritylaminothiazol-4-yl)-2-(2-t-butoxyprop-2-oxyimino) acetamido[-3-(1-pyridiniummethyl)ceph-3-em-4-carboxylate may be isolated in substantially pure crystalline form.

Abstract: A system for coding and identifying an article is provided wherein a plurality of pellets are secured to the article. The pellets are each constructed from a known material and the thickness of the pellets vary. Each pellet may be identified by the measurement of the time that it takes for a known traveling wave, e.g. an ultrasonic wave, to pass through it.

Abstract: A system for coding and identifying an article is provided wherein a plurality of pellets are secured to the article. The pellets are each constructed from a known material and the thickness of the pellets vary. Each pellet may be identified by the measurement of the time that it takes for a known traveling wave, e.g. an ultrasonic wave, to pass through it.

Abstract: A method of making a composite structure upon a solid former having a low melting point, comprises placing the former together with the laid-up composite within a mould, raising the temperature of the mould such as to melt the former and expand it such that it consolidates the composite within the mould.

Abstract: The present invention is a vacuum furnace arrangement which in the preferred embodiment is generally cylindrical in shape having a hot zone chamber within, the hot zone chamber has heat insulating material secured to the inside surface of the outside wall. Secured, at several locations, to the outside wall and passing inwardly therefrom, through the heat insulating material, are a number of molybdenum rods. A heating element located in the hot zone chamber, in the preferred embodiment, is a flat strip of molybdenum, formed to approximate a circle, and which has apertures located therein with said rods passing therethrough. At each aperture there is a relatively long electrical insulator sleeve fitted over the rod to keep the rod electrically insulated from the heating element. The long sleeves in turn are held in position, within the aperture by a large disc-like shield on both ends and each of said shields in turn has an aperture through which the rod passes.

Abstract: A power feed through for vacuum electric furnaces is provided for furnaces in which work pieces to be processed are placed inside a vacuum electric furnace chamber which is evacuated with a mechanical pump and then backfilled with a partial pressure of gas containing nitrogen, such as nitrogen or ammonia, or a hydrocarbon such as methane, or mixtures thereof. The work pieces to be processed are electrically connected to the negative (cathode) terminal of a D.C. power supply, the positive terminal being connected to the chamber wall and to ground. The power supply is energized and a portion of the gas is ionized. The work pieces are heated to temperatures of approximately 650.degree. to 1100.degree. F. for ion nitriding or to temperatures of approximately 1650.degree. to 1900.degree. F. for ion carburizing. The heating is effected at least in part by the ion activity but auxiliary heating elements may be used if desired.

Abstract: A fixedly mounted thermocouple for vacuum electric furnaces is described, which is particularly suitable for furnaces for nitrided or carburized case formation and which is particularly suited to avoid line of sight metallic deposition on the mounting from sputtering in the furnace and which could result in shorting, spaced shields being provided on the thermocouple mounting for this purpose.

Abstract: Improved coupling means for pipe to provide a leak tight joint between abutting pipe sections. Each pipe section is provided with at least one annular, circumferentially continuous depression at each end thereof, the outside of the exterior surface in which said depression is formed providing continuous surface-to-surface seal with the coupling means about the entire circumference of the abutting pipe sections to be joined. The coupling means includes a first band encircling the adjacent ends of the pipe sections with the free ends thereof overlapping. A second band overlies and encircles the first band and means are provided for tensioning the ends of the second band together.

Abstract: An isolated signal conditioning circuit is provided whereby control or measurement circuitry is isolated from a load, such as a control instrument, through the use of optical isolation and a switching relay. Optical isolation is utilized to isolate the input signal produced by the control or measurement circuitry, from the load. The switching relay isolates a feedback circuit utilized to insure that the signal supplied to the load is an accurate representation of the input signal produced by the control or measurement circuitry.