baber/WOPTO huggingface dataset:
Patent GB-852769-A (GB)
Title: Treating subterranean hydrocarbon formations
IPC: C09K8/594
Filed: 1959-02-20
Abstract: 852,769. Treating oil-bearing strata. OIL RECOVERY CORPORATION. Feb. 20,1959, No. 5939/59. Class 85. A subterranean formation is treated for oil recovery by disseminating within the formation, by CO 2  carbonated water at a pressure of CO 2  of at least 400 pounds per square inch, a surface active agent preferably non-ionic. The agent may be introduced separately, or simultaneously with the carbonated water, as a liquid or in solution, suspension or dispersion, the carbonated water being used as the drive; or the materials may be introduced intermittently or in alternation. Suitable non-ionic agents are obtained by reaction of a hydrophobic hydroxy compound, such as phenol or alcohol, with several moles of an alkylene oxide, principally ethylene oxide or propylene oxide. Alkylene oxide reaction products with higher fatty acids or fatty acid esters; phosphoric acid esters of polyethylene glycol; low order condensation products of polyhydric alcohols with polybasic water-soluble acids such as glycol tartrate, glycerol citrate, esterified with stearic acid; higher fatty acid reaction products with alkylolamines such as coconut fatty acids with diethanolamine; and saponins are stated to be suitable surface agents. Polyoxyethylene sorbitan monostearate, as illustrating a preferred group of non-ionic surface agents soluble in water, dilute acids and alkalis, alcohol and toluol, but insoluble in mineral oil, is used in carbonated water in the proportion 0À1% as a drive at 900 pounds per square inch in unconsolidated sand carrying naphthenic crude oil, the oil content of the sand being reduced from 17À1 to 8À8% of the pore space. The solubility of CO 2  in the solution containing the wetting agent may be modified by adding a salt or salts or other organic or inorganic compound, a large number of suitable substances being mentioned. Carbonated water or brine may be used as the only drive, or it may be used with other drives, e.g., a COz drive. Dry CO 2  may be introduced first, followed by carbonated water and then by an air, methane or other fluid drive. The wetting agent is removed from the effluent and returned to the inlet well. The solubility at high pressures of gaseous hydrocarbons, particularly lower paraffinic hydrocarbons in.crude oil, is stated to be increased by CO 2 . In an example, a formation was treated with CO 2  of at least 300 pounds per square inch, or preferably 600-1400 pounds per square inch, the effluent containing CO 2  and hydrocarbons which are both gaseous and liquid at 0‹C and 760 mm., and after liquids are condensed from such effluent, the gas residuum is recycled as the gaseous medium for contacting the hydrocarbon oils.
Patent GB-548901-A (GB)
Title: Improvements relating to the production of iso-paraffins
IPC: C07C5/27
Filed: 1940-04-02
Abstract: 548,901. Isoparaffin hydrocarbons. ANGLOIRANIAN OIL CO., Ltd., HOWES, D. A., and FAWCETT, E. W. M. April 2, 1940, No. 5943. [Class 2 (iii)] Normal paraffin hydrocarbons having at least four carbon atoms in the molecule are isomerized by contacting with a catalyst comprising an oxide or sulphide of a metal of the sixth group of the periodic system, with or without the addition of an oxide or sulphide of a metal of the eighth group. The process is preferably effected at a temperature of 200- 600‹C. and under a pressure of 1-300 atmospheres. An inert gas, such as methane, nitrogen or carbon dioxide, may be present, but hydrogen should be absent. Catalysts mentioned are tungsten disulphide, a mixture of nickel and tungsten sulphides, a mixture of molybdenum disulphide and tungsten trioxide, a tungsten sulphide on silica gel, molybdenum sulphide on kieselguhr, tungsten trioxide on kieselguhr, and molybdenum trioxide mounted on alumina gel. The tungsten sulphide catalyst may be prepared by soaking silica gel with a dilute solution of ammonium tungstate, heating to form tungsten trioxide and treating with hydrogen sulphide ; whilst the molybdenum sulphide catalyst is produced by adding kieselguhr to a dilute ammonia solution of ammonium molybdate saturated with hydrogen sulphide, making acid with hydrochloric acid, filtering, washing and drying. When using sulphide catalysts, it is advantageous to introduce with the hydrocarbon stock a small quantity of a sulphur compound, e.g. hydrogen sulphide or methyl mercaptan, thereby prolonging the life of the catalyst. Regeneration of any of the catalysts may be effected by treatment with an oxygen-containing gas at elevated temperature, the sulphide catalysts being then reformed by passing sulphur vapour or hydrogen sulphide over. Examples describe the conversion of n-butane to isobutane by batch and continuous methods using some of the foregoing catalysts and the treatment of n-pentane is mentioned. Specification 527,767 is referred to.
Patent GB-472300-A (GB)
Title: Improvements in tennis and like rackets
IPC: A63B51/12
Filed: 1937-02-27
Abstract: 472,300. Tennis &c. rackets. FRITSCH, C. Feb. 27, 1937, No. 5948. Convention date, Feb. 28, 1936. [Class 132 (ii)] The central longitudinal strings 3 are looped around a pin 6 secured in the forked end 7 of a tube 8 moved longitudinally in the handle 2 to vary the string tension by rotating a rod 11 threaded into the tube 8 through an end piece 14 pinned to the rod. The ends of the pin 6 engage longitudinal grooves in the racket handle 2 to prevent rotation of the tube 8, axial movement of which is limited downwardly by the tube engaging a washer 17 between the end piece 14 and handle 2 and upwardly by any suitable means. The stops limiting the movement of tube 8 may function so as to limit the positions of the tube in the handle whereby the balance of the handle may be adjusted. Indications may be provided on the tension strings, the tube 8 or the end piece 14 to check the state of tension of the strings, an aperture being provided in the handle if necessary to render the indications visible.
Patent GB-672388-A (GB)
Title: Improvements in or relating to rotary electric switches
IPC: H01H19/64
Filed: 1950-03-10
Abstract: 672,388. Rotary switches. IGRANIC ELECTRIC CO., Ltd. March 10, 1950. [March 10, 1949] No. 6069/50. Class 38 (v). The switch comprises a rotatable, cylindrical, insulating contact carrier and an insulating base having walls forming a number of chambers each adapted to house a pair of spaced fixed contacts, the carrier having a peripheral flange movable in the chambers between the fixed contacts which are arranged to be bridged in turn by a contact located in the flange with its ends exposed on opposite sides thereof, the arrangement of the base, carrier and flange being such as to minimise arcing. In a single-pole arrangement, Fig. 3, the movable contact 35 is carried in an aperture 34c in the carrier 34, the flange 34b of which is guided between the adjacent surfaces of base sections 32, 37, the carrier being mounted on a square sleeve 27 surrounding part 15d of the operating spindle 15. The contact 35 is urged outwards by a spring 36 and is arranged to bridge such pairs of fixed contacts 38d, 41a as are provided, these contacts being mounted in base recesses 32g, 37b. Each contact 41a is an upturned lug of a contact ring 41 having a terminal lug 41d, Fig. 8, in one of the recesses, instead of a contact 41 so as to provide an "off" position, and each contact 38d forms part of a U-shaped member 38 having a terminal screw 38c. The unoccupied recesses are blocked off by flat plugs 39 to prevent the entry of dust. The spindle 15 has a flatted portion 15c carrying (a) a member 23 co-operating with a fixed stop 17b to limit rotation of the spindle and therefore the number of switch positions, (b) an eccentric cam 24, and (c) a member 25 having a downturned lug 25c. The cam 24 is enclosed by an annular member 26 having a downturned lug 26c engaging a slot 30a in a member 30 mounted on sleeve 27 and having an upturned lug 30b. A spring 29 surrounds the upper end of sleeve 27 and has its ends 29a, 29b brought out on opposite sides of lugs 25c, 30b. The spindle is retained in each operative position by the engagement of member 26 in recesses 31a in a stop plate 31 secured to the top of the base. When the spindle is rotated clockwise, the cam 24 causes member 26 to move radially inwards, the end 29a of the spring meanwhile being rotated clockwise by the lug 25c. When the member 26 is eventually freed from a recess 31a, the spring end 29b rotates plate 30, and thus the sleeve 27 and carrier 34 clockwise, until member 26 engages the next recess. If the contacts stick a part 25b on member 25 engages a part 26b of member 26 positively to drive the latter. The carrier 34 may house several contacts 35, and the ring 41 may have two terminals (Fig. 12, not shown), and in a modification, (Fig. 13, not shown), the ring may. be in two parts, each having a terminal. A multi-pole switch is constructed by using one or more intermediate base sections 40, Fig. 4, having upper and lower surfaces identical with those of portions 37, 32, respectively.
Patent GB-710985-A (GB)
Title: An improved sealing assembly on a bearing end
IPC: F16C33/74
Filed: 1952-03-10
Abstract: 710,985. Stuffing-boxes. TOHILL, J. March 10, 1952, No. 6121/52. Class 122(5) A journal bearing is formed with a threaded recess 26 at one end and sealed by resilient packing rings 14, 16 housed in the recess and respectively compresed by retaining rings 13, 15 screwed into the recess. The end of the recess is closed by an apertured plate 12. Specifications 685,111 and 707.340 are referred to.
Patent GB-164119-A (GB)
Title: Improvements in or relating to means or devices for supporting drawers, shelves and other sliding structures
IPC: A47B88/493
Filed: 1920-03-02
Abstract: 164,119. Stuck, E., and Roneo, Ltd. March 2, 1920. Rectilinear-motion bearings.-A guide and extension slide for drawers &c. comprises a bearer 2 fixed to the casing and supporting on ball bearings a bearer 4 to which is secured a bearer 5 supporting on ball bearings 6 an extension slide 7. Stops are provided for limiting the travel of the balls, and buffers 4b, 2b, 4<c> on the slides to cushion the inward and outward movements of the drawers. The drawer is supported on the extension slides by plates 9, 13 secured thereto which engage respectively bent portions 11, 12, and 14, 16 of the extension slides 7 so as to be removable therefrom but accurately positioned.
Patent GB-478864-A (GB)
Title: Improvements in or relating to means for kneading dough, and securing basins, pots and like vessels
IPC: B01F15/00
Filed: 1937-03-03
Abstract: 478,864. Mixing-appliances. HILSE, G. March 3, 1937, No. 6366. Convention date, March 3, 1936. [Class 86] [Also in Group XXV] A mixing-appliance comprises a crosspiece 14 filled with a freelymounted ball 16 through which a handoperated stirrer is passed. The crosspiece can be clamped across the top of a bowl by clamps which also hold the bowl on a table.
Patent GB-880510-A (GB)
Title: A process for drying coagulated chlorobutadiene emulsion polymers
IPC: C08C3/00
Filed: 1960-02-24
Abstract: Coagulated chlorobutadiene emulsion polymers, obtained by the precipitation of polychloroprene latices using aqueous solutions of mixture of aluminium and/or titanium salts with alkali and/or alkaline earth salts, are dried by a continuous kneading process at reduced pressure and at elevated temperature, e.g. 0,01 to 300 mm. Hg at 110-200 DEG C. for not more than one minute. Specification 844,592 also is referred to.
Patent GB-1018136-A (GB)
Title: Manufacture of thioethers in the vapour phase
IPC: B01J27/00
Filed: 1964-02-17
Abstract: Thioethers are obtained by causing one or more olefins to react in the vapour phase with hydrogen sulphide at a temperature in the range of 150 DEG  to 350 DEG  C. in the presence of a catalyst formed from active carbon or active carbon impregnated with one or more salts or oxides of metals of Group Ib of Mendel<\>aeef's Periodic Table. Impure hydrogen sulphide may be used such as sulphuretted gases originating from natural gases which contain in addition to H2S, a fairly high proportion of CO2. The content of this additional gas should not exceed 50%.  The olefins preferably contain from 2 to 6 carbon atoms.  The reaction takes place under pressure, which is generally 10 to 300 atmospheres.  A suitable particular apparatus described with reference to a drawing (not shown) comprises two storage containers which contain hydrogen sulphide and a liquid olefin, connected to a proportioning pump which injects the reagents into a tubular reactor. During their travel, these reagents are combined and passed through a preheater.  The tube forming the reactor is enclosed by a water jacket.  The outlet of the reactor at the bottom is connected to a drain cock, a sampling device, a refrigerator and a separator at the bottom of which the product of the process is withdrawn. Arranged above the separator is a pipeline leading through bubbler devices, a meter and a flame for burning residual gases.  The discharging gases can be recycled when they do not contain CO2.  Examples are given in which (1) ethylene and H2\S are reacted at 270 DEG  C. under a pressure of 50 atmospheres over activated carbon impregnated with about 10% silver acetate, (2) as in (1) except that the reaction temperature is 250 DEG  C. and the catalyst is vegetable carbon impregnated with about 10% silver nitrate, (3) as in (2) except that the catalyst is formed solely by vegetable activated carbon, (4) propylene and H2S are reacted at 260 DEG  C. under a pressure of 50 atmospheres over the catalyst used in (2), (5) as in (4) except that a butene cut replaces propylene.
Patent GB-900274-A (GB)
Title: Improvements in fluid flow fittings
IPC: F16L41/10
Filed: 1960-01-13
Abstract: 900,274. Pipe couplings, junction pieces. IMPERIAL-EASTMAN CORPORATION. Feb. 25, 1960 [Sept. 11, 1959], No. 6628/60. Class 99(1). A fitting for use with a port 11 having an annular, outwardly-widening cam surface 15 and a screw-threaded bore 16 opening into that surface, and adapted to be sealingly secured in the port in any one of number of rotational positions relative to the axis of the port, comprises a body having an inner end and a bore 18 extending therethrough, and external, coaxial screw-threaded portions 19, 21 respectively adapted to be screwed into the bore 16 and carrying a nut 13, a sealing element urged by the nut into sealing engagement with the surface 15 to effect a high pressure seal of the nut to the port, and a second sealing element urged by the first element into sealing engagement with the body, the body including a stop 23 for automatically positioning the nut to limit pre-selectively the screwing of the body portion 19 into the port. As shown, the nut 13 has an annular deformable portion 25 defining a space 27 in which is disposed a sealing ring 14 of nylon, glass-fibre-filled nylon, or asbestos-filled phenolic resin. When the nut is screwed down the fitting, engagement between the surface 15 and the portion 25 causes the latter to be deflected inwardly to substantially enclose the ring 14.
Patent GB-599262-A (GB)
Title: Improvements in supply circuits for electric discharge tubes
IPC: H05B41/18
Filed: 1945-03-16
Abstract: 599,262. Supply systems for space discharge apparatus; inductances. LUMALAMPAN AKTIEBOLAG. March 16, 1945, No. 6650. Convention date, Aug. 25, 1944. [Classes 38 (ii) and 38 (iv)] A supply circuit for a discharge tube 2 operating at a predetermined voltage is adapted for alternative use with supply sources of a voltage equal to or superior to that prescribed for the tube by the provision of an inductance having a fixed air gap and two windings 5, 9, these windings having terminals for alternative connections. Fig. 1 shows the inductance connected with its windings in parallel where the supply voltage on terminals 15, 16 is equal to or superior to the prescribed voltage, and Fig. 2 shows it connected as an autotransformer when the supply voltage is too high. One or both windings may have tappings to suit various voltages. Specification 484,632 is referred to.
Patent GB-343331-A (GB)
Title: Improvements relating to free wheels
IPC: F16D41/12
Filed: 1930-02-28
Abstract: 343,331. Free-wheel clutches. REBOUL, M. H., 17, Rue Raisin, St. Etienne, Loire, France. Feb. 28, 1930, No. 6701. Convention date, March 6, 1929. [Class 80 (ii).] A free-wheel clutch comprises spring-pressed or gravity pawls 0 free to oscillate in all directions so as to bear over the full width of the ratchet teeth M in spite of faulty construction and bearing play, and the usual dust-excluding covers are replaced by integral parts of the free-wheel itself. Each pawl 0 lies in a recess B open on one side only and can. pivot about its end D in both lateral and radial directions. To cover in the pawl housings and ratchet teeth M, the ratchet element L may have a raised flange N adapted to be rolled over and, if necessary, machined. The hub A has a ball-bearing race C, the balls for which may be lodged in a cage Q, Fig. 7. Where the flange N is not provided, the cage Q has dust-excluding flanges U, V on one or both sides. The bearing balls may be inserted through a plugged hole F in the hub A or member L.
Patent GB-991397-A (GB)
Title: Improvements relating to the production of polyolefines
IPC: C08F10/00
Filed: 1964-02-18
Abstract: A process for producing polyolefins by contacting at least one olefin monomer under polymerization conditions with a catalytic amount of a polymerization catalyst comprising an organo-metallic compound, comprises introducing a non-condensable gas into the reactor, removing this gas and olefin vapour from the reactor as the polymerization proceeds, condensing the olefin vapour so removed and separating the condensate from the non-condensable gas, recycling the condensed olefin to the reactor, and compressing the non-condensable gas and recycling it to the reactor at a rate such that the temperature in the reactor is maintained substantially constant. Suitable non-condensable gases are hydrogen, nitrogen, argon, helium and neon.  In the examples, propylene is polymerized using a catalyst comprising TiCl3 co-crystallized with AlCl3 in admixture with diethyl aluminum chloride, the non-condensable gas being hydrogen or nitrogen. The reaction is terminated with an isopropyl alcohol/hydrogen chloride/water mixture.  The Specification includes a flow diagram of the preferred process. Specification 807,204 is referred to.
Patent GB-454706-A (GB)
Title: Magnifying glass with adapter and illuminating device
IPC: G02B25/02
Filed: 1936-03-06
Abstract: 454,706. Magnifying-glasses. BORZYKOWSKI, J., 12, Garbergasse, Vienna; March 6, 1936, No. 6801. Convention date, March 7, 1935. [Class 97 (i)] A magnifying glass 1 is carried in a tubular casing 2 having a white lining 4 and an adapter 3 into which an illuminating lamp 6, preparation needle or other device may be inserted. The length of the casing 2 is such that when it is placed on an object a sharp image is obtained, the object being illuminated indirectly by the lamp 6 which may have a lens-like tip 5.
Patent GB-937573-A (GB)
Title: Improvements in or relating to sintered metal tubes
Inventor: EUDIER MICHEL
IPC: B22F3/00
Filed: 1961-02-24
Abstract: 937,573. Powder metallurgy. COMMISSARIAT A L'ENERGIE ATOMIQUE. Feb. 24, 1961 [March 11, 1960], No. 6904/61. Class 82. A process for zone sintering a powder metal tube comprises forming a tube by extrusion or centrifuging a mixture of a powdered metal and a binder, inserting the " green " tube into a refractory tube which is inclined at an angle of 5-30 degrees to the horizontal, rotating the assembly at a speed corresponding to at least 1 revolution during the time required for sintering, and moving a hot zone along the outer tube from the bottom to the top of the tube to effect sintering of the inner tube. The clearance between the diameter of the inner and outer tubes should be at least 0.5 mm. and the speed of rotation should be at least 1-6 revolutions per head. The metal powders specified are iron, bronze and nickel and the binders are collodion, P.V.A. or gum tragacanth. As shown in the drawing, a metal powder tube 6 is inserted into a refractory or stainless steel tube 1 which is rotated. A clearance of 1 mm. is allowed between the tubes and the outer tube is evacuated or purged with hydrogen. An annular electric resistance furnace 8 surrounds tube 1 and during rotation of the tube the furnace is moved progressively along the tube to effect the sintering of the inner tube at a temperature of 600-1200 C.
Patent GB-313434-A (GB)
Title: Method of welding silicon-containing steel alloys
IPC: B23K35/30
Filed: 1929-03-04
Abstract: 313,434. Krupp Akt.-Ges., F. June- 11, 1928, [Convention date]. Uniting by fusion; thermo-aluminic processes. -In welding steel alloys containing at least 0.3 per cent of silicon the additional metal contains at least 0.7 per cent of a metal which develops a vapour to protect the additional metal and the weld from the access of oxygen so that at least 0.3 per cent thereof is found in the weld. Such metal has a lower point of evaporation and greater affinity for oxygen than iron and may consist of manganese, zinc, cadmium or combinations thereof. An arc-welding electrode may contain up to 3 per cent of manganese but preferably contains from 0.7 to 2 per cent so that 0.3 to 0.8 per cent is found in the weld. The manganese may be alloyed with the core or with the surface thereof or may be in the form of an oxide, carbonate, sulphide or halide forming an envelope therefor. In welding such silicon steels the additional metal may be also in the form of a welding wire or powder and the weld may also be performed by a gas flame or by thermoaluminic process. Combustion of the manganese is stated to provide additional heat to render the weld more thinly liquid so as to provide for the elimination therefrom of gases and non-metallic constituents and to render the weld deformable in a hot or cold state.
Patent GB-624842-A (GB)
Title: Improvements in or relating to gas turbine power plant
IPC: F23D11/24
Filed: 1945-01-16
Abstract: 624,842. Jet-propulsion plant. POWER JETS (RESEARCH & DEVELOPMENT), Ltd., and FEILDEN, G. B. R. Jan. 16, 1945, No. 6942/48. Divided out of 624,768. Drawings to Specification. [Classes 110 (ii) and 110(iii)] In a gas turbine plant comprising a coaxial compressor and turbine connected by shafting and having arranged between them a combustion system consisting of an annular air casing enclosing a number of flame tubes separately mounted on the plant structure, the inner walls of the air casing is formed as a stiff member and is structurally integrated with the stationary structure at adjacent sides of the compressor and turbine. The subject-matter of this Specification is identical with that described in Specification 624,768, but the claims differ. Specification 610,021 also is referred to.