Showing papers by "Mitsubishi published in 1969"

Polypropylene resin composites and production thereof

Abstract: A polypropylene resin composite which comprises a polypropylene resin matrix that is both microscopically foamed and molecularly oriented in three dimensions and an ion-exchanging material dispersed therein, which composite is produced by a process which comprises subjecting a precursor composite comprising a solid polypropylene matrix and an ion-exchange material of greater swellability to a chemical treatment comprising an acid treatment and an alkali treatment.

The Viscosity of Mesophases Formed by Cholesteryl Myristate

Abstract: This investigation provides the first reported viscosity measurements on cholesteryl myristate. Viscosities were measured as a function of both temperature and shear over temperatures corresponding to the isotropic liquid, the cholesteric mesophase, and the smectic mesophase. The myristate ester was chosen for study because its multiple phase transitions have been previously shown to be reproducible. The phases also persist over relatively long temperature ranges. The viscosity measurements were made at lower shear rates than previously reported for esters of cholesterol by using a Weissenberg Rheogoniometer. These are the first cone-and-plate viscosity measurements reported for any esters of cholesterol. The shear rates in this cone-and-plate viscometer are homogeneous and variable. The results show large breaks in viscosity behavior at the independently-measured thermodynamic transitions between the crystal, smectic, cholesteric, and isotropic states. Viscosities for the isotropic state are New...

Process and apparatus for continuously relaxing textile fabrics

Abstract: Textile fabric which has residual inner stresses can be uniformly continuously relaxed by a method in which the fabric is heated by steam or hot water and subjected to a mechanical impact such as vibration or jumping, and at the same time, carried along a treating surface owing to the effects of the heating fluid and the mechanical impact. An apparatus for carrying out the method comprises a carrying plate for fabric to be relaxed, a heating medium jetting means corresponding to the carrying plate, and an impact-exerting mechanism. By the method and the apparatus, the textile fabric can be uniformly and continuously relaxed without any fixed wrinkles, and results in suitable handling, bulkiness and dimensional stability.

Radiation curable coating compositions and process for the preparation thereof

Abstract: A COATING COMPOSITION USEFUL FOR RADIATION CURING IS PREPARED THROUGH COPOLYMERIZATION OF A MIXTURE COMPRISING A VINYL MONOMER HAVING A HYDROXYL GROUP AND A,B-ETHYLENICALLY UNSATURATED CARBOXYLIC ESTER OF A MONOHYDRIC ALCOHOL, PRIMARY ESTERIFICATION OF THE HYDROXYL GROUP OF THE RESULTANT COPOLYMER WITH A POLYHYDRIC CARBOXYLIC ANYHYDRIDE IN AN ORGANIC SOLVENT, AND SECONDARY ESTERFICATION AND/OR ETHERFICATION OF CARBOXYLIC GROUP AND/OR HYDROXYL GROUP OF THE PRIMARILY ESTERFIED COPOLYMER WITH A EPOXY VINYL MONOMER. THE COATING COMPOSITION MAY FURTHER CONTAIN POLYMERIZABLE AND/OR CROSS-LINKAGE FORMABLE COMPOUNDS ACTIVE FOR RADIATION CURING, THE EXAMPLE, A COMPOUND OF THE FRMULA: CH2=C(-R10)-COO-R9-O-(CO-R8-COO-R9-O)L-CO-C(-R10)=CH2 WHEREIN R8 IS A DIVALENT GROUP HAVING 2 TO 100, R9 IS A SATURATED DIVALENT HYDROCARBON GROUP OF 2 TO 10C, R10 IS HYDROGEN ATOM OR METHYL GROUP AND 1 IS 0 OR 1 TO 10

Current limiting device

Abstract: A unitary structure of two opposite electrodes insulated from each other by a solid insulation is connected to a housing including cylinder and piston means. A current limiting material with self-restoration centrally extends through the structure except for the external portion of the outer electrode and contacts the piston. To prevent the material vaporized upon a flow of overcurrent from externally leaking O-rings or a metallic gasket can be disposed between the structure and housing. Alternatively the housing may be jointed to the structure through metal-to-metal or metal-to-insulation contact under pressure, shrink fit, welding or brazing.

Cooling assembly for blast furnace shells

Abstract: On the inside of a steel shell of a blast furnace there is provided a wall made of a refractory material having a high heat transfer characteristic, such as silicon carbide. Steel pipe loops for circulating a cooling medium are embedded in the wall and temperature sensing means within the refractory material check the temperature adjacent the pipe loops.

Method and device for inspecting bottle by radiant energy

Abstract: A method of inspecting bottles comprises directing diffused light rays on bottles to be inspected and scanning the bottles thus irradiated. The bottles, in each of which an optical system with a light receiving unit is inserted, are rotated for scanning. A device for inspecting bottles is provided with a rotary turret, on which a plurality of bottle supports are rotatably and vertically movably arranged at regular angular intervals, irradiating units, optical systems with light receiving units arranged so as to enter into the bottles, and transducers for converting light signals received by the optical systems into electrical signals. The use of diffused light rays makes it possible to eliminate the lens action of the bottle wall and to detect solely foreign particles or substances attached on the bottle walls.

Process for the polymerization of olefins

Abstract: A PROCESS FOR POLYMERIZING ETHYLENE OR A MIXTURE OF ETHYLENE AND OTHER COPOLYMERIZABLE A-OLEFINS, WHEREIN POLYMERIZATION IS CARRIED OUT AT 0-110*C. UNDER ATMOSPHERIC OR SUPERATMOSPHERIC PRESSURE IN THE ABSENCE OF A LIQUID HYDROCARBON DILUENT, AND IN THE PRESENCE OF A CATALYST WHICH IS A MIXTURE OF TWO PORTIONS OF FINELY GRANULAR ETHYLENE POLYMER IMPREGNATED WITH AN ORGANOALUMINUM COMPOUND OF THE GENERAL FORMULA AIR3-NXN WHEREIN R IS AN ALKYL GROUP, X MAY BE HE SAME OR DIFFERENT AND IS A HALOGEN ATOM OR AN ALKOXY OR TRIALKYLSILOXY GROUP AND N IS A NUBER OF 0-2, AND A VANADIUM COMPOUND OF THE GENERAL FORMULA VOY3 WHEREIN Y MAY BE THE SAME OR DIFFERENT AND IS A HALOGEN ATOM, AN ALKOXY OR TRIALKYLSILOXY GROUP, WITH THE PROVISO THAT AT LEAST ONE Y IS AN ALKOXY GROUP OR TRIALKYLSILOXY GROUP.

Aeration tank for waste treatment

Abstract: The aeration tank in a plant for waste treatment by means of activated sludge is about 30 meters high and slender, and waste and oxygen-bearing gas are supplied to the bottom of the tank at the prevailing hydrostatic pressure of more than 40 p.s.i.g., thereby accelerating oxygen absorption by the mainly aqueous waste material and increasing the processing capacity of the tank over shallower tanks of equal volume.

Consumable welding rod for welding chromium steels and the resultant welds

Abstract: The consumable welding rods contain titanium and niobium in amounts such that a weld formed by melting the rod contains titanium niobium in an amount corresponding to the expression 2Ti+ Nb (6-14)C wherein Ti, Nb and C are the proportion of titanium, niobium and carbon in said weld metal. The proportion of titanium and niobium in the welding rod is determined by estimating the total quantity of carbon in the weld metal, the quantities of carbon, titanium and niobium lost by oxidation during welding and the variations in the quantities of titanium and niobium in the weld metal resulting from the welding process.

Means for supporting an impeller of a centrifugal compressor

Abstract: In a centrifugal compressor, a rotatable shaft has conically tapered portions and an impeller and a front vane are mounted, as separate components, on the tapered portions of the shaft. A first buffer member or spring is interposed between a retaining member and the inlet end of the front vane assembly. A second buffer member or spring is interposed between the vane assembly and the impeller. The buffer members may be in the form of conical springs. The first buffer member is substantially stronger than the second buffer member, and both buffer members act in the same direction to bias the vane and the impeller to the respective tapered portions of the shaft to prevent radial gaps between the vane and the shaft and between the impeller and the shaft.

Process for producing modified propylene polymer

Abstract: MODIFIED PROPYLENE POLYMER IS PROVIDED HAVING IMPROVED IMPACT RESISTACE AND TOUGHNESS AT LOW TEMPERATURE AS WELL AS HAVING A HIGH SOFTENING POINT AND STIFFNESS. THE MODIFIED PROPYLENE POLYMER IS PRODUCED BY A PROCESS OF POLYMERIZING A MEMBER OF THE GROUP CONSISTING OF PROPYLENE AND ETHYLENE AND SUBSEQUENTLY POLYMERIZING CONTINUOUSLY IN THE SAME SYSTEM THE OTHER MEMBER OF SAID GROUP, SAID POLYMERIZATION BEING EFFECTED AT A TEMPERATURE OF 30-100*C., AT A PRESSURE OF FROM 1-10 ATMOSPHERS AND UTILIZING AS CATALYSTS DIALKYLALUMINUM MONOHALIDE AND TITANIUM TRICHLORIDE, THE POLYMERIZATION OF ETHYLENE BEING EFFECTED IN THE PRESENCE OF AN AVERAGE AMOUNT OF FROM 0-25% BY VOLUME OF PROPYLENE AND THE AMOUNTS OF ETHYLENE AND PROPYLENE FED TO THE REACTION SYSTEM BEING ADJUSTED SO THAT THE RESULTING MODIFIED PROPYLENE POLYMER CONTAINS FROM 5 TO 40% BY WEIGHT ETHYLENE.

Automatic flow control valve

Abstract: An automatic flow control valve is formed of a housing defining a valve chamber and a valve body axially displaceable within the valve chamber. The juxtaposed surfaces of the valve chamber and valve body form a flow passageway through the valve and are arranged to avoid any sudden changes in the cross-sectional flow area. The juxtaposed surfaces have a frustoconical shape converging in the direction of flow of a pressurized fluid through the valve. The valve body and the valve chamber cooperate to form a number of separate chambers which receive pressurized fluid for balancing the counteracting forces on the valve for regulating flow through it.

Contact-less probe system

Abstract: A COLLIMATED LIGHT REFLECTED FROM AN OBJECT IS PASSED THROUGH A VIBRATING PINHOLE AND CONVERTED INTO AN AC AND A DC COMPONENT CONTROLLED IN GAIN WITH THE LIGHT INTENSITY. THE POLARITY OF THE AC COMPONENT IS PHASE DETECTED AND COOPERATES WITH THE LEVEL OF THE DC COMPONENT TO DETERMINE IF THE SYSTEM IS WITHIN IT OPERATIVE REGION. WHEN THE SYSTEM IS OUTSIDE THE OPERATIVE REGION, THE PHASE DETECTED COMPONENT AND THE DC LEVEL CAUSE THE SYSTEM TO ENTER THE OPERATIVE REGION. WHEN IN ITS OPERATIVE REGION, THE SYSTEM CONTROLLED BY THE PHASE DETECTED COMPONENT IS MAINTAINED IN A PREDETERMINED POSITION.

Fluid motor-pump construction

Abstract: A device such a motor or a pump includes a rotatable eccentrically carried member or plate which is connected to rotate one or more radially extending pistons so as to reciprocate them in their associated cylinders for displacing fluid therein, and it includes a slipper pad having a surface on one side which conforms to the curvature of the eccentric plate and is engaged for sliding contact therewith. Each slipper pad engages at its opposite side with a piston member which is radially arranged for reciprocation within its associated cylinder. The piston includes a closed end face adjacent the slipper which conforms to and is maintained in bearing contact with the slipper. Each slipper and associated closed end face of the piston is provided with a communicating passage for permitting the flow of the fluid being pumped into one or more grooves defined on the face of the slipper which is in bearing contact with the cam plate in order to provide lubrication for the bearing sliding contact of the slipper with the cam plate. During the reciprocation of the piston fluid is directed into and out of the associated cylinder through a passage communicating at one end with a distributor valve and which connects at its opposite end into a respective cylinder through a cylinder cap or headpiece arranged at its radial outer end.

Polyvinyl chloride resin composition having excellent transparency, surface gloss and impact strength

Abstract: PVC resin compositions of improved transparency, surface gloss and impact resistance are obtained by mixing the PVC with a graft polymer. The graft is produced by grafting first methyl methacrylate and then styrene onto an elastomer of butadiene, n-butyl acrylate, and styrene in the proportions shown in the accompanying ternary constitutional diagram. When the monomer(s) used in preparing the aforesaid graft polymer have a small quantity of C10 to C18 saturated fatty acid dissolved therein, the PVC compositions prepared from the graft polymer show further improvements in their properties.

Method for the continuous manufacture of corrugated cardboards of synthetic resin

Abstract: IN MANUFACTURING A CORRUGATED CARBOARD OF SYNTHETIC RESIN, A SHEET OF THERMOPLASTIC RESIN IS EXTRUDED AT A HIGH TEMPERATURE AND CORRUGATED BY MEANS OF A PAIR OF CORRUGATING ROLLS MAINTAINED AT A TEMPERATURE LOWER THAN THE EXTRUDED SHEET AND THEN A SECOND SHEET SIMILARLY EXTRUDED IS BONDED TO THE CORRUGATED SHEET AS A HIGH TEMPERATURE. AFTER COOLING THE SINGLE FACED CORRUGATED CARDBOARD ANOTHER EXTRUDED SHEET OF THERMOPLASTIC RESIN MAY BE BONDED TO THE OPPOSITE SIDE OF THE CORRUGATED SHEET TO FORM A DOUBLE FACED CORRUGATED CARDBOARD.

Process for quenching a gas obtained by thermal cracking of hydrocarbons

Abstract: PROCESS FOR QUENCHING A GAS OBTAINED BY THERMAL CRACKING OF HEAVIER HYDROCARBONS THAN KEROSENE WHICH COMPRISES QUENCHING INDIRECTLY THE HIGH TEMPERATURE CRACKED GAS IN A QUENCHING HEAT EXCHANGER TO A TEMPERATURE CRACKED REPRESENTED BY THE FOLLOWING EQUATION: T=0.56X+A WHEREIN T IS A VOLUMETRIC AVERAGE BOILING POINT OF THE FEED HYROCARBONS AND T= T10+T30+T50+T70+T90/5 IN WHICH T10, T30, T50, T70 AND T90 IS A TEMPERATURE OF (*C.) AT WHICH 10 VOLUME PERCENT, 30 VOLUME PERCENT, 50 VOLUME PERCENT, 70 VOLUME PERCENT AND 90 VOLUME PERCENT OF FEED HYDROCARBONS IS DISTILLED IN ASTM DISTILLATION, RESPECTIVELY, AND A IS A TEMPERATURE IN THE RANGE OF 340-240* C., AND T IS A TEMPERATURE ABOUVE 450* C. BUT NOT EXCEEDING 600*C., SAID TEMPERATURE (T) BEING A TEMPERATURE OF THE CRACKED GAS AT AN OUTLET OF THE QUENCHING HEAT EXCHANGER, AND FURTHER QUENCHING DIRECTLY THE CRACKED GAS TO A TEMPERATURE OF 150-250*C.BY SPRAYING HEAVIER OIL.

Catalytic production of olefin polymers

Abstract: A Ziegler-type polymerization catalyst comprising a first catalyst component containing a transition metal compound and a second catalyst component containing an organometallic compound, which first catalyst component contains a silicon compound. Preparation of the first catalyst component and production of olefin polymers are also disclosed.

Elevator control system

Abstract: AN ELEVATOR CONTROL SYSTEM INCLUDES A NEGATIVE FEEDBACK TYPE CONTROLLER APPLIED WITH BOTH A SIGNAL FOR COUNTERBALANCING AN UNBALANCED TORQUE APPLIED TO AN ELEVATOR DRIVE CIRCUIT AND STORED IN A MEMORY, AND A SPEED SIGNAL FOR AN ELEVATOR CAR. THE FORMER SIGNAL IS APPLIED TO THE CONTROLLER NOT ONLY BEFORE THE CAR STARTS BUT ALSO AFTER THE SPEED SIGNAL HAS BEEN APPLIED TO THE CONTROLLER. THUS THE CAR IS SMOOTHLY STARTED WITHOUT A DISCONTINUITY OF SIGNAL LEVEL BETWEEN BOTH SIGNALS APPLIED TO THE CONTROLER.

Method for manufacturing false twisted threads from thermoplastic resin tapes

Abstract: A method for manufacturing false twisted thermoplastic thread from thermoplastic resin tape comprises passing the tape through a region wherein an eddy stream of a high temperature high pressure fluid such as steam, superheated steam and air is present. The eddy stream is produced by eccentrically jetting a high pressure fluid of a temperature not lower than the plasticizing point having the thermoplastic resin tape into a cylindrical thread forming tube. The thermoplastic resin tape is false twisted so as to form a cylindrical bundled thread and simultaneously thermoset in the bundled form all by the effect of the eddy stream.

Diesel fuel injection system with improved starting performance

Abstract: A fuel injection system for a diesel engine has a plunger barrel with a fuel intake port and a plunger slidable axially in the barrel. A plunger operating cam has a pair of lobes for operating the plunger. During either the intake or the compression stroke, the cam advances the plunger to a first position blocking the port to inject fuel, after which the plunger retracts. At the end of the compression stroke, the cam advances the plunger further to a second position to block the port to inject fuel. A switching device is effective to rotate the plunger between a starting position and a running position. In the starting position, the peripheral surface of the plunger blocks the port during the two fuel injection strokes of the plunger and, in the running position, the plunger is rotated to a position where its peripheral surface blocks the port only upon the further advance of the plunger to the second position. The invention improvement comprises at least one fuel passage in the plunger connecting the peripheral surface to the inner end face of the plunger and communicating with a by-pass fuel intake port in the barrel, only during starting of the engine, and in the second plunger position. The by-pass fuel intake port is spaced angularly from the main fuel intake port.

Novel acrylonitrile polymer fibers and process for producing the same

Abstract: A ACRYLIC FIBER IS PROVIDED WITH PROTUBERANCES OF MORE THAN 0.2U HEIGHT AT INTERVALS IN THE RANGE OF 1.5 TO 12U ON THE PERIPHERAL SURFACE THEREOF. THIS NOVEL ACRYLIC FIBER IS MANUFACTURED BY TREATING THE FIBER WITH A DENATURALIZING AGENT SUCH AS ALKALI METAL HYDROXIDES, SULFURIC ACID, HYDROXYLAMINE SALTS, AND HYDRAZINE, AND IMMERSING THE TREATED FIBER INTO A SHRINKING AGENT SUCH AS GLYCOLS HYDROTROPIC AGENTS, METALS HAVING A LOW MELTING POINT AND ORGANIC CARBONATE OR Y-BUTYROLACTONE SOLUTIONS WHICH CAN DISSOLVE THE ACRYLONTRILE POLYMER. D R A W I N G

Method of continuous processing of sulfide ores

Abstract: A continuous processing of sulfide ores in utilization of a combination of smelting, slagging, and blister furnaces, or of smelting and blister furnaces.

Descaling apparatus for steel

Abstract: Steel is descaled by applying a thin layer of alkali metal hydroxide to the surface to be descaled and subsequently heating the coated steel to a temperature above the melting point of the alkali metal hydroxide in an oxygen-containing atmosphere. According to an alternative embodiment, an alkali metal salt solution is sprayed onto hot steel emanating from an annealing zone, whereby the water of the solution evaporates substantially immediately and the alkali metal salt melts. Apparatus for the alternative embodiment is also disclosed.

Method for producing foamed article from polypropylene

Abstract: A method of producing a foamed article having a uniform cellular structure using a modified polypropylene produced by irradiating polypropylene with an ionizing radiation of from 0.1 to 5.0 megarad and graft-copolymerizing the irradiated polypropylene with from 0.5 - 6 percent by weight divinyl benzene or with from 0.5 - 6 percent by weight of divinyl benzene and not more than 10 percent by weight of an acrylic acid ester.

High-strength and high-toughness cast steel for propellers and method for making propellers of said cast steel

Abstract: A method of making a high strength, high toughness cast steel marine propeller comprised of not more than 0.25 percent of carbon, not more than 1 percent of silicon, not more than 3 percent of manganese, from 5-20 percent of chromium, from 1-8 percent of cobalt, and from 0.5-7 percent of one or both of molybdenum and tungsten, and the remainder consisting of iron. In addition, the cast steel may contain up to 8 percent of nickel and up to 4 percent of copper, depending on the conditions. The method comprises casting the propeller into individual sections, welding said sections together, heating to a temperature of 800* to 1,000* C. and air cooling. The propeller can be aged by heating to a temperature between 450* and 700* C. If desired, the individual cast sections can be annealed prior to welding.

Liquid developers for electrostatic photography

Abstract: A liquid developer for electrostatic photography is prepared by dispersing in a dispersion medium composed essentially of a paraffinic hydrocarbon, an alkylaminoethyl methacrylate-containing polymer; a carboxyl group-containing copolymer or acrylic or methacrylic acid and an ester thereof; a coloring material; and/or a dihydroabietic ester

Floatable casting for working on hull structures below water level

Abstract: A floatable casing which is adapted to be positioned around two hull sections of a vessel to be joined while they are in the water includes two sections or portions which are hinged together centrally and each of which includes a plurality of tanks which are adapted to be filled or emptied of sea water for the purposes of floating them, or positioning them in place around the bottom and sides of a hull section to be welded to another section. Each section includes a vertically elongated tank at each side which is adapted to extend upwardly on each side of the vessel to be joined together. Each section defines a continuous beltlike working space preferably at least as high as a man which is adapted to be enclosed in a watertight manner when the device is applied around the hull sections to be joined in a manner such that the separation plane of the hull sections lies in the working space. The device is first floated to the area of the two hull sections and then is submerged by filling the tanks at each end to cause the sections to pivot to an opened form and permit them to be inserted below the bottom of the vessel sections. The sections are moved together and the tanks of the casing structure are then ballasted to give sufficient buoyancy to the device to cause it to bear with resilient water proof portions thereof tightly against the two hull portions which are to be joined together. Thereafter the working space which is aligned with the dividing plane of the two hull sections is freed of sea water by pumping the water out of the space. The side sections are sufficiently high to permit entry of workmen from either side of the vessel and complete movement of the workmen in the passage space defined by the device, to effect the joining of the vessel parts together.

Ignition device for internal combustion engine

Abstract: A low DC voltage boosted by an inverter and a rectifier charges a capacitor a charge on which is, in turn, discharged into an ignition coil under control of a thyristor Upon starting the engine, the DC voltage is applied to an intermediate terminal of a primary transformer winding in the inverter Diodes are connected in a circuit for gating the thyristor to prevent the circuit from partly short-circuiting the primary winding through the intermediate terminal