Abstract: Dense round rods are obtained by placing an uncompacted particle mass into a mold containing a cavity of a predetermined geometry. The particle mass is subjected to a heating schedule wherein entrapped gases are permitted to pass off during an initial period of the schedule and during a second period of the schedule at least 75% liquid phase is formed, whereby surface tension forces cause the particle mass top portion to attain a hemispherical shape. The heated mass is permitted to cool and a round product is obtained.

Abstract: Aliphatic ether compounds of the formula ##EQU1## wherein Z is CH.sub.3 or Cl, and n is zero when Z is CH.sub.3 and is one when Z is Cl, are useful as inhalation anesthetics.

Abstract: This disclosure is directed to novel ethers of the formula:CF.sub.3 CH.sub.a X.sub.b --O--CF.sub.2 CH.sub.c F.sub.d Cl.sub.ewherein X is fluorine, chlorine or bromine, preferably fluorine, a is 1 or 2, b is 0 or 1, a plus b are 2, preferably both a and b being 1, c is 0 or 1, d is 0 to 2, e is 0 to 2, c plus d plus e are 3, preferably each of c, d, and e is 1, and a plus c are 1 or 2, preferably 2, with the proviso that when e is 1 or 2, X is fluorine or bromine, preferably fluorine. The compounds having less than 8 fluorine atoms per molecule are useful as anesthetics, and all of the compounds are useful as solvents and dispersants for fluorinated materials. A highly preferred compound useful as an anesthetic is 1,2,2,2-tetrafluoroethyl 1',1',2'-trifluoro-2'-chloroethyl ether.

Abstract: Aliphatic ether compounds of the formula ##EQU1## wherein n is zero or one, and --X is --CF.sub.3 or --H when n is zero and is --OCH.sub.3 when n is one, are useful as inhalation anesthetics.

Abstract: This invention relates to a novel carbon dioxide product comprising a pumpable slurry consisting of finely divided particles of solid phase carbon dioxide dispersed in liquid phase carbon dioxide in which the solid particles are free flowing, i.e. do not agglomerate on standing for periods of time sufficient to permit beneficial commercial use of the product. The slurry is produced by withdrawing gaseous carbon dioxide at a controlled rate from a vessel containing liquid carbon dioxide at the temperature and pressure conditions of the triple point while vigorously agitating the liquid, to produce solid carbon dioxide particles in the liquid. The rate of formation of the solid is controlled to produce small, finely divided particles of solid carbon dioxide rather than large pieces.

Abstract: Method and apparatus for withdrawing and analyzing gases dissolved in liquid, more specifically, equilibrated blood gas samples in vivo. A catheter including a semipermeable membrane, connected to include a volume of carrier gas at atmospheric pressure, is introduced percutaneousluy into the bloodstream. After a predetermined period, equilibratin occurs between the blood gases and the carrier gas. By means of displacement in the volume or reduction in the pressure, the carrier gas including the equilibrated gas is then removed from the semipermeable membrane to another area for analysis. A corresponding volume of carrier gas is replaced in the semipermeable membrane from an inlet supply.

Abstract: The supply of a gas to be dissolved in a liquid is controlled by initially sensing the concentration of dissolved gas in the liquid under treatment and subsequently producing appropriate control signals for adjusting the setting of a valve in the gas supply line. A dissolution device emplaceable in the liquid under treatment includes a liquid inlet and outlet and a static liquid-gas mixing means therebetween. The device is adapted to receive supplied gas whereby a gas space in the upper reaches of the device is established. The gas space is also maintained in communication with a dip tube disposed exteriorly of the device in the body of liquid with the lower extremity of the dip tube establishing the maximum height of the gas space within the dissolution device.

Abstract: A locking pitch composition for depositing within the pitch reservoir of graphite nipples of the type including such voids. The composition is a heat-foamable, thermoplastic material including particulate pitch in a lignin sulfonate-based binder. The composition may be deposited into the reservoirs of the nipples by direct extrusion at ambient temperatures. When a nipple thus prepared is utilized in an electrode joint assembly, the high temperatures provided at the electrode joint foam the composition to expand it into adjacent thread spaces at the joint. Continued heating then carbonizes the composition to lock the joint.

Abstract: A powder metallurgy process for producing stainless steel stock. The process utilizes readily available, inexpensive, oxygen- and carbon-bearing raw materials and yields stainless steel stock of high purity with a low level of interstitials. After determining the degree of homogeneity desired, the process consists of providing an alloy composition from a particle mass comprising iron, chromium- and/or nickel-bearing powders containing oxygen and carbon, purifying the particle mass in an uncompacted condition in order to obtain a coherent porous compact with a desired purity level and then hot working the compact to produce a homogeneous and densified product. The properties of the product produced by this process are comparable to properties of a wrought product of similar chemical composition.

Abstract: An air compression system for use in chemical processing operation. A primary air compression system module includes, on a common shaft, a multi-stage high pressure ratio compressor for supplying compressed air for the process, a pair of bearings support the common shaft and straddle the multi-stage compressor, a steam turbine is located on one end of the common shaft for providing start-up and supplemental power to the air compression module when necessary, and a radial inflow hot gas expander is provided on the opposite end of the common shaft which receives hot gas from the process for expansion thereof to provide the main power source for the air compression module. The air compression module is characterized by high power, relatively high speed operation suitable for applications in chemical processing industries and is a skid-mounted unit for ease of installation, and minimum overall reliability maintenance.

Abstract: Liquefaction of a vapor such as carbon dioxide gas is achieved by utilizing the refrigeration available in liquefied natural gas (LNG) to sub-cool liquid carbon dioxide, which in turn is sprayed into carbon dioxide gas in a condensing vessel thereby liquefying the gas. Suitable control means are provided for maintaining a predetermined temperature within the condensing vessel and for regulating the flow rate of LNG in response to variations in the flow of liquid carbon dioxide before the sub-cooling of liquid CO.sub.2 by LNG is effected.

Abstract: Aliphatic ether compounds having a formula selected from the group consisting of ##EQU1## wherein each of a and d is 2 or 3; each of b, c, e, i, j and k is 0 or 1; each of f and g is 0, 1, 2, or 3; h is 0, 1, or 2; a + b + = 3; d + e = 3; f + g + h = 3; i + j + k = 1; and X is F or Cl; with the provisos that when a and d are both 3, then i is 1, f is 0, 1, or 2, and g is 0, 1, or 3; when g is 2, then f is 1; when c is 1, then f is 3 and k is 0; when j is 1, then c is 1; and when both b and e are 1, then i is 1, are useful as solvents and dispersants for fluorinated materials. In addition, the compounds methyl 1-bromo-1,1,2,3,3,3-hexafluoroisopropyl ether and methyl 1,2-dichloro-1,1,3,3,3-pentafluoroisopropyl ether are useful as inhalation anesthetics.

Abstract: A superconducting compound of the A-15 crystal structure type is obtained in a composite by a high temperature diffusion between a first metallic component and a second metallic component contained in a bronze alloy. Stability is achieved by including in the composite a quantity of high-conductivity normal material. Diffusion of the second metallic component into the normal material with a resultant degradation of conductivity of the normal material is prevented by placing an impervious barrier layer between the bronze alloy and the normal material. In a specific embodiment, the barrier layer takes the form of an annular shell comprising at least two sectors of dissimilar metals, one of which reacts with a component of the bronze alloy to form a layer of said superconducting compound, and the other of which is substantially non-reactive. Thus, a discontinuous superconducting ring is formed on the barrier layer which prevents flux trapping.

Abstract: A planar magnetron sputtering apparatus is provided with an additional, variable magnetic field normal to and substantially throughout the erosion region of a cathode plate. Application of the foregoing variable magnetic field effects continuous variations in the general location of the points at which magnetic lines of flux are parallel to the cathode plate which correspondingly results in variations in the points of maximum cathode plate erosion. By producing a less acute erosion pattern over a wider cathode plate area, a greater portion of the cathode plate material may be sputtered from any particular planar cathode plate.

Abstract: A fail safe system for preventing erroneous activation of a device, such as a respirator, is provided to inhibit continuous or free running operation of the device as well as precluding activation of the device within an initial, predetermined portion of a phase in a cycle of operation. A circuit is provided for inhibiting the production of an output activation signal in the event that an input signal is continuously present or present at least at the start of a phase. In addition, a further circuit is provided for establishing a predetermined delay period commencing with the start of a phase for precluding the production of an output activation signal during such a period. Thus, only upon sensing the occurrence of a particular external condition after the aforementioned delay period has expired, will an output activation signal be produced.

Abstract: A new filter structure is provided for removing particles from the exhaust gas of a large, single piston engine of low RPM, before passing the exhaust gas through a turbine for the purpose of driving a supercharger. The filter is so constructed as to be able to efficiently and reliably perform its filtering function over long periods of time in the high temperature environment of the piston engine exhaust. It comprises a cylindrical shaped housing having at one end longitudinally extending slits distributed around its circumference and at the other end an annular flange for mounting the filter in the exhaust line. The housing encloses a filter element comprising a hexagonal stacked array of cylindrical tubes and said filter element is retained in said housing by means of multiple resilient brackets, each formed in the shape of an open elongated loop so as to conform generally to the contour of the filter element on one hand and the inside of the housing on the other.

Abstract: An oxygen-fuel cutting torch comprises an integral aluminum body extruded to form three straight-through gas feed passages. The passages connect with a laterally mounted gas dispensing tip assembly and have dead-end terminal seals. Source oxygen is divided between a first passage and a second passage for supplying cutting oxygen and preheat oxygen respectively. Fuel gas fed through a third passage mixes with the preheat oxygen within the tip assembly, the preheat oxygen and fuel gas flow rates being adjusted by respective throttling valves. Each valve is seated in a transverse bore hole in the torch body that intersects the corresponding gas passage. Cutting oxygen is fed to the torch tip through a bore-seated valve in the first passage that is opened against spring bias by a manually operated lever.

Abstract: Hexafluoro-t-butyl difluoromethyl ether of the formula ##EQU1## is useful as an inhalation anesthetic.

Abstract: An apparatus for forming and closing a display package comprises a card blank and an overlying plastic sheet and includes a carrier for the blank and the overlying plastic which is movable through an operation path. The carrier advantageously comprises a rotatable plate having a plurality of receiving areas for individual cards and plastic sheets which are arranged at spaced annular locations on the table and which may be rotated through the operational path by rotation of the table. Associated with the operational path of movement is a device for feeding either individual cards with window openings or cards which already have plastic sheets affixed thereto onto the associated carrier. The plastic sheets may be fed separately, if desired, so that they will overlie the card blank. A heat sealing and forming device is arranged along the operational path and engages the plastic sheet to heat it and to form it into a pocket and this is advantageously accomplished when the carrier is held stationary.

Abstract: This disclosure is directed to novel ethers of the formula:CF.sub.3 CH.sub.a X.sub.b --O--CF.sub.2 CH.sub.c F.sub.d Cl.sub.ewherein X is fluorine, chlorine or bromine, preferably fluorine, a is 1 or 2, b is 0 or 1, a plus b are 2, preferably both a and b being 1, c is 0 or 1, d is 0 to 2, e is 0 to 2, c plus d plus e are 3, preferably each of c, d, and e is 1, and a plus c are 1 or 2, preferably 2, with the proviso that when e is 1 or 2, X is fluorine or bromine, preferably fluorine. The compounds having less than eight fluorine atoms per molecule are useful as anesthetics, and all of the compounds are useful as solvents and dispersants for fluorinated materials. A highly preferred compound useful as an anesthetic is 1,2,2,2-tetrafluoroethyl 1',1',2'-trifluoro-2'-chloroethyl ether.