baber/WOPTO huggingface dataset:
Patent GB-314526-A (GB)
Title: Improvements in and relating to the production of zirconium oxide
IPC: C01G25/02
Filed: 1929-06-18
Abstract: 314,526. Karl, A. June 30, 1928, [Convention date]. No Patent granted (Sealing fee not paid). Zirconium oxide is obtained by fusing its ores with sodium carbonate, removing the sodium silicate formed by washing, bringing the alkali zirconate into solution as sulphate and then precipitating the hydroxide, by hydrolysis in neutral solution. Simultaneous precipitation of associated impurities such as iron, titanium, or aluminium is prevented by first reducing the solution with a powerful reducing agent such as nascent hydrogen, sulphurous acid, or sodium hyposulphite. The fusion step of the process is effected in a furnace lined with zircon. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the statement that the process is applicable also to the production of metal oxides similar to zirconium oxide. This subject-matter does not appear in the Specification as accepted.
Patent GB-613635-A (GB)
Title: Improvements in the production of articles from multi-coloured plastic materials by extrusion
IPC: B29C48/17
Filed: 1946-06-21
Abstract: 613,635. Extrusion apparatus. DELORME, J. June 21, 1946. No. 18754. Convention date, June 23, 1945. [Class 87 (ii)] In an apparatus for extruding multi-coloured plastic bodies, plastic material of different colours is forced through tapped openings 3a, 3b in a hollow feed chamber 2, into annular grooves 12a, 12b formed in the surface of a cylindrical distributing core 6. These grooves communicate with further grooves 11a, 11b, which are in different planes from the first grooves and into which open two series of bores 7a, 7b through which the material is discharged towards a draw plate 4. The grooves 11a, 11b, 12a, 12b may be formed in the inner wall of the feed chamber 2 instead of in the distributer 6. A grid may be provided between the distributer and the draw plate and the distributer, which may be rotary, may carry means to stir the material after passage through the grid. It is also possible to employ draw plates with one or more passages provided or not with central spindles according or not to whether it is desired to produce hollow or solid articles.
Patent GB-906471-A (GB)
Title: Electric switches
Inventor: LOWE SIDNEY ROLAND
IPC: H01H9/02
Filed: 1960-05-27
Abstract: 906,471. Switch cases. MIDLAND ELECTRIC MANUFACTURING CO. Ltd. May 26, 1961 [May 27, 1960], No. 18760/60. Class 38 (5). The body part 10 of a switch mounted on a frame 12 secured in a wall box 17 by screws 19 is formed of synthetic resin material and has resilient catches 11 formed integrally therewith. Catches 11 clip over the inner edges of respective recesses 13 in frame 12 which may thus accommodate more than one switch body. The body 10 may be prised from the frame 12 by insertion of a screw driver, for example, between lips 14 formed on the frame 12 and on body 10. Cover 15 may be secured by screws 16 to the body 10 so that tightening of the screws tends to increase the pressure exerted by catches 11 on the frame 12, or it may be secured directly to the frame 12.
Patent GB-1182255-A (GB)
Title: Improvements in or relating to Hydrogen Sulphide Removal from Gases.
Inventor: HUTCHFIELD JOHN KEITH
IPC: B01D53/52
Filed: 1966-04-29
Abstract: 1,182,255. Hydrogen sulphide removal from gases. SIMON-CARVES Ltd. 27 June, 1967 [29 April, 1966], No. 18944/66. Heading C1A. Hydrogen sulphide is removed from a gas by scrubbing with an aerated alkali metal carbonate solution whereby the hydrogen sulphide goes into solution and the resulting HS- ions are oxidized by the dissolved oxygen in the solution so that substantially no HS- ions remain in the solution leaving the scrubber. The solution is preferably recycled and aerated before each scrubbing operation. H2S can be removed from a fuel gas containing between 0 and 60 parts per million by volume of H2S and the pH of the scrubbing solution is preferably not less than 8À5. A rotary surface aerator is preferably used for aerating the solution.
Patent GB-169546-A (GB)
Title: Improvements in or relating to electron discharge devices
IPC: H01J19/30
Filed: 1920-07-06
Abstract: 169,546. General Electric Co., Ltd., and Thompson, M. July 6, 1920. Vacuum tubes.-An electrode or a part thereof, made of tungsten or other metal, particularly a thoriated tungsten filament, is coated with a varnish, which, on baking, and during exhaustion of the device, makes a definite change in the surface of the metal, so as to prevent evolution of gases. The varnish may consist of celluloidamylacetate paste, thinned out with a mixture of ether and methyl alcohol, and may contain red phosphorus.
Patent GB-1070691-A (GB)
Title: Superconducting bodies and methods of making them
IPC: H01L39/12
Filed: 1964-05-07
Abstract: A superconducting body is made from a compacted two phase mixture of a powder of a superconductor and softer metal, the compacted mixture being softer than the superconductor alone and having a transition temperature which varies with the amount of softer metal in the mixture. The mixture may be 25-98% Nb3Sn or V3Si and 2-75% Cu or Pb. After compaction at 8000 p.s.i. the mixture may be sintered at 700 DEG C. for 2 hours in vacuo. According to one example, Pb is evaporated on to Nb3Sn powder at 1000-1100 DEG C.
Patent GB-172350-A (GB)
Title: Improvements in modulation systems for wireless signalling and the like
IPC: H04B1/16
Filed: 1920-07-06
Abstract: 172,350. Taggart, J. Scott-, and Radio Communication Co., Ltd. July 6, 1920. Thermionic amplifiers and modulators; directive signalling.-In wireless receiving systems, a plurality of electric discharge devices such as thermionic valves, each of which is provided with means for controlling the current through it, are connected in series so that a main current flows through the devices, the magnitude of which is dependent on the combined effects of the different controlling-means. In the arrangement shown, two three-electrode valves V<1>, V<2>, are connected in series with a main source of current H, a receiving circuit L<1>, C' being connected to one grid, and a local source of oscillations G to the other grid. The source G may be of radiofrequency, preferably arranged to give beats for heterodyne reception. Two wireless receiving systems, receiving the same or different signals, may have their effects combined by applying them to the grids of the two valves, one or both valves acting as a detector, and the antenna systems may be differently arranged to produce directional effects. Alternatively audio-frequencies may be applied to one or both of the grids. According to the Provisional Specification, two valves connected in series may be used in transmitting systems. One valve may be selfoscillating, the oscillations being modulated by low-frequency oscillations imposed upon the grid of the second valve; which grid may be given a normal negative potential so that the main current is very small or zero when the modulating potentials are not applied. The modulations may be produced by a microphone or by a key in the grid circuit. The key might be arranged to short-circuit completely the second valve.
Patent GB-1529593-A (GB)
Title: Method of producing prefabricated lengths of sheathed electric resistance heating elements
IPC: H01R4/58
Filed: 1976-05-10
Abstract: 1529593 Metal sheathed resistance heating element LES CABLES DE LYON SA 10 May 1976 [28 May 1975] 19081/76 Heading H5H A metal sheathed mineral insulated heating element 1 is connected at each end to a flexible supply cable 10 by baring the adjacent ends of the resistor 2 and cable core 11 connecting the bared end of the resistor 2 to a metal connector 7, encasing the end of the sheath 4 and the connection between resistor 2 and connector 7 with a hard plastics layer 8 (polyphenyl sulphur) to provide a fluid tight seal between the sheath and the resistor, fixing the bared and of cable core 11 to connector 7 and encasing the joint so formed in a second plastics layer 13 which exerts a stress on the first hard plastics layer 8. As shown, the sheath 4 is of copper and is provided with a protective P.V.C. sheath 5 which is stripped away at each end to enable an earth terminal 6 to be threaded and soldered to sheath 4. The connector 7 may be formed as a pin provided with blind holes to accommodate the ends of the resistor 2 and cable 10 which are secured by crimping. Brazing or soldering may be used to secure connector 7 to the resistor 2 and cable 10. The second layer 13 may be injection moulded polyphenyl sulphur or polyethylene. A machine for joining the heating element to flexible cables is disclosed. Different length elements with different length flexible cables enables various ratings of heating cable to be prepared for use in heating rooms, the heating cable being embedded in cement or concrete.
Patent GB-289015-A (GB)
Title: Combined clutch device
IPC: F16D43/30
Filed: 1927-07-19
Abstract: 289,015. Schmitz, J. M. M., and Versluys, J. r. C. April 20, 1927, [Convention date]. Clutches, friction.-A compound clutch comprises two successivelyacting concentric centrifugal clutches 1, 2, the driving-member of clutch 1 carrying between radial ribs loose blocks 4, which engage the surface 8 of the outermost member 5 of the clutch, this member being integral with the driven part of clutch 2, which is internal to clutch 1 and carries similar looose blocks 7 to engage centrifugally the interior surface 9 of the driving- part of clutch 1.
Patent GB-1041963-A (GB)
Title: Improvements in the cooling and removal system of finished products from bar or wiremanufacturing lines
IPC: B21B45/02
Filed: 1965-05-06
Abstract: 1,041,963. Making bars and wires. J. H. B. CARDOSO. May 6, 1965 [May 21, 1964], No. 19114/65. Heading B3A. In a method of making bars or wires the material is cut into commercial lengths immediately after leaving the finishing stand of a rolling mill and the cut pieces fall into a liquid cooling bath which is preferably agitated by compressed air. The material is cut by a flying shear having two roller cutters which may have a peripheral speed slightly higher than the linear speed of the work in order to facilitate separation of the cut lengths. Alternatively the cut lengths may be separated by the action of a magnetic field or a compressed air jet. The cut lengths are removed from the cooling bath by a mechanical conveyer. Where two lines are producing bar or wire a flying shear is provided for each line and a common cooling bath may be used.
Patent GB-809895-A (GB)
Title: Oxidation of alpha-tocopherol
Filed: 1957-06-18
Abstract: a -Tocopherylquinone is prepared by oxidizing a -tocopherol with ferric chloride in a substantially inert two-phase solvent medium having a non-polar phase in which the a -tocopherol and a -tocopherylquinone are both substantially completely soluble and a polar phase in which the ferric chloride is substantially completely soluble, and, if desired, the a -tocopherylquinone is reduced to a -tocopherylhydroquinone.  Preferred two-phase systems for the oxidation are mixtures of aqueous lower aliphatic alcohols having one to four carbon atoms with ethers having boiling points less than 100 DEG  C., for example 25-75 per cent aqueous methanol with diethyl or di-isopropyl ether.  Examples describe the oxidation of a -tocopherol to a -tocopherylquinone with ferric chloride in 50 per cent aqueous methanol-diethyl ether and 50 per cent aqueous acetic acidpetroleum ether; the oxidation of a -tocopherol in 50 per cent aqueous methanol-di-isopropyl ether and subsequent reduction of the quinone, without isolation, by aqueous sodium hydrosulphite to a -tocopherylhydroquinone; and the catalytic reduction of a -tocopherylquinone to a -tocopherylhydroquinone with hydrogen over a palladium-calcium carbonate catalyst.
Patent GB-422417-A (GB)
Title: Manufacture of a new dyestuff intermediate
Filed: 1933-07-06
Abstract: Aminohydroquinone di (b  - hydroxyethyl) ether is obtained by treating hydroquinone with ethylene chlorhydrin, acylating the product, nitrating, reducing and de-acylating.  The acylating step may be omitted.  According to examples: (1) hydroquinone and ethylene chlorhydrin are reacted in alcoholic solution, the product acylated with acetic anhydride, nitrated in acetic acid, reduced with iron and hydrochloric acid and deacylated with caustic soda; (2) the reduction and de-acylation are carried out simultaneously with sodium sulphide and sulphur; and (3) the diether is prepared and nitrated directly, followed by reduction with sodium sulphide and sulphur. Specification 422,422 is referred to.
Patent GB-116228-A (GB)
Title: Improvements in Ore Separating Machines.
IPC: B03C1/14
Filed: 1917-12-29
Abstract: 116,228. Fraser & Chalmers, and Bullock, W. Dec. 29, 1917. Magnetic separators.-Ore is supplied by one or more shoots a to the air gap between a wheel c and diametrically opposite pole-pieces b, the wheel c having a face c<1> of magnetic 'material provided with horizontal or inclined serrations filled in with non-magnetic material. The non- magnetic ore particles drop into a receptacle beneath the poles while the magnetic particles are carried past the poles to other receptacles; their removal may be assisted by a scraper or water spray. In the form shown, the wheel c is rotated between fixed poles b. In other forms, the wheel may revolve round stationary poles, or the magnets may revolve relatively to a fixed wheel. The wheel c is provided with a cover m and is vertically adjustable to vary the width of the air gap.
Patent GB-596487-A (GB)
Title: Silt stirring device for gully pot emptier
IPC: E03F7/10
Filed: 1945-07-27
Abstract: 596,487. Apparatus for flushing gully pots. SCAMMELL LORRIES, Ltd., HUGH, P. G., HALL, W. F., and ROBINSON, J. S. July 27, 1945, No. 19250. [Class 33] [Also in Groups X, XXI and XXVIII] A silt stirring device for use with a gullyemptying apparatus comprises a pump mounted on the chassis of a vehicle for pumping liquid under pressure through a flexible pipe 27 and a valve 28 to an annulus 21 situated near the end of a suction pipe 6. Through orifices 22 in the annulus 21 issue jets of liquid which disintegrate the sludge 23 at the bottom of the gully pot 24. The liquid under pressure is supplied at a lower rate than that at which the suction pump withdraws the contents of the gully pot. The pumps are controlled by suitably placed switch gear 25 and 26. Various annuli, having different arrangements of jets may be fitted at the end of the suction pipe. Specification 596,486, [Group XXIX], is referred to.
Patent GB-405347-A (GB)
Title: Improved cinematograph films and a method of and means for taking them and projecting them in natural colours on a screen or the like
IPC: G03B33/16
Filed: 1932-07-08
Abstract: 405,347. Colour kinematography. DAVIES, J., 486, Hawthorne Road, Bootle, Lancashire. July 8, 1932, No. 19304. [Class 97 (i).] In kinematograph films intended to reproduce natural colours, each frame of the negative film contains a single complete picture divided longitudinally, transversely, or obliquely into two or more parts, one or more parts being taken through one and the other or others through a complementary colour filter and through a diffusing screen, the parts being in the same arrangement in each frame. The monochrome positive film obtained from the negative is projected through colour filters and a diffusing screen similar to those through which the negative film was taken or one colour component part is projected through a filter, the remaining part being projected without a filter. When taking, a composite filter having red and green parts, the dividing line being vertical, horizontal, or diagonal, is used and may be placed in contact with the film or, it is stated, in front of or behind the lens. The diffusing screen comprising a pattern of lines or dots &c. may be arranged on a separate plate, on the filter, or on the film itself. Fig. 3 shows a positive film in which the projecting filters are embodied in the film, the parts a of each frame being dyed red and the parts b dyed green or uncoloured.
Patent GB-865595-A (GB)
Title: Improvements in or relating to methods of producing intestine regulators
IPC: A61K31/70
Filed: 1957-03-07
Abstract: Preparations for the treatment of or avoidance of constipation comprise lactulose mixed with a solid or liquid carrier customarily employed for the oral administration of medicines. The preparations may be as tablets, dragees or capsules.  Liquid preparations may be made syrupy by addition of lactose or a dextrin-maltose mixture.  The preparations may include laxatives, exemplified by anthraquinone derivatives such as 1,8-dioxy-anthraquinone, glucosides or methyl ethers of trioxy-anthraquinones, extracts of senna, Cascara Sagrada, aloe, pulvis rhei, pulvis jalapae.  According to an example, a mixture of maize starch and a product comprising 12% of lactose and 82% of lactulose was granulated, flavoured and the dried granulate was formed to 2 g. tablets.  According to another example the product comprising 12% of lactose and 82% of lactulose, dextrin maltose and lactose monohydrate were dissolved in water to form a syrup. Specification 865,594 is referred to.
Patent GB-530766-A (GB)
Title: Improvements in display and/or delivery stands for use on shop counters or the like
IPC: A47F1/08
Filed: 1939-07-03
Abstract: 530,766. Show cases. BARRINGER, WALLIS & MANNERS, Ltd., and MANNERS, R. July 3, 1939, No. 19306. [Class 52 (i)] A show case for display or dispensing articles is provided at its base with rubber &c. strips 14 to prevent slipping on, or damage to, a supporting surface such as a polished counter. The strips 14 are preferably clamped at an incline and the showcase is made of sheet metal having a shoot 15 with a front opening 17 and a ramp 18 to move the lowermost articles forwardly.
Patent GB-691200-A (GB)
Title: Means for attaching wall and ceiling lining boards, panels, sheets and slabs to section rails and structural members
IPC: E04F13/08
Filed: 1950-08-02
Abstract: 691,200. Wall &c., linings; structural elements. INKLEY, B. Aug. 2, 1951 [Aug. 2, 1950], No. 19313/50. Classes 20(ii) and 20(iv) Wall &c. lining boards &c. are attached to section rails having board supporting flanges 6 and an upstanding crown with a slot extending therealong by means of spring clips which engage and slide along the slot and are formed with outwardly extending arms 5 adapted to bear on the edges of the boards, the slot engaging portions of the clips bearing against an undersurface, provided in the crown and bordering the slot, when the arms of the clips are in their operative position. The crown 1 of the sheet metal or extruded T-section rail in Fig. 1 has a groove 2 running the length of. the crown with longitudinal recesses 3 at the sides, and the clip has a central portion 4 shaped to fit the groove 'The slips are sprung into position or slidden in from the end of the rail. A hanger for the rail may have a T-shaped end to engage groove 2. The rail shown in Fig. 2 has a continuous base 7 with two spaced upstanding webs 8, each inturned as at 9 at the free end and flanged as at 10 to form recesses 11. Fig. 3 shows a rail having a crown 12 provided at intervals with keyhole slots 13, the flanges 6 being brought nearer together at the inner edge. Alternatively, a plurality of elongated slots may the provided in a rail of the section shown in Fig. 3 and the clips inserted lengthwise and then rotated to lie across the rail. Specification 588,498 is referred to.
Patent GB-671414-A (GB)
Title: Improvements in gaseous electric discharge devices
IPC: H01J17/22
Filed: 1949-07-22
Abstract: 671,414. Discharge apparatus. BRITISH THOMSON-HOUSTON CO., Ltd., and SCOTT, W. J. June 7, 1950 [July 22, 1949], No. 19354/49. Class. 39 (i). In a T.R. switch, having a filling of 10 mm. of argon and 4¢ mm. of water vapour, generation of excess hydrogen due to the dissociation of the water vapour by the electric discharge is prevented by a catalyst which is active in the presence of water vapour to catalyse hydrogen and oxygen into water. The catalyst may be coated over the whole interior surface of the device or preferably over a portion of the surface in the neighbourhood of the discharge. Alternatively, the catalyst may be applied to a glass and/or ceramic or other support mounted in the device, or a " keep-alive " electrode tipped with the catalyst may be used, in which case adjacent surfaces of the device may be coated with the catalyst by sputtering from the electrode. The metallic inside surfaces of the device are preferably coated with a noble metal of high electrical conductivity such as gold or silver. A preferred catalyst is palladium, which is active down to room temperature and may be prepared by introducing palladium chloride into the device during manufacture and reducing it by hydrogen.
Patent GB-877620-A (GB)
Title: Improvements in or relating to lifting mechanisms
Inventor: MACFARLANE CHARLES JOHN
IPC: G21C19/26
Filed: 1957-06-19
Abstract: 877,620. Lifting devices for engaging articles. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. June 10, 1958 [June 19, 1957], No. 19381/57. Class 78 (4). [Also in Group XL (a)] An article to be lifted is retained in a tube 2 by chains 16 which normally hang loosely between the tube 2 and inner tube 18 as illustrated but which can be moved to lie taut across the bottom of both tubes by relative rotation of the tubes. In the device illustrated, which is particularly adapted for fishing unwanted articles from channels in the core of a nuclear reactor, the inner tube 18 is carried by ball bearings 5 from the outer tube 2 and is turned by a bevel pinion 23 engaging internal teeth 24 on the tube 18 and driven by an electric motor 21 supplied with current through the suspending cable 26 of the device. The tube 2 is separable from the upper part 1 of the device by a bayonet coupling formed in a flange 20. The chains 16 may be of such a length that they are drawn taut by the rotation of the tubes or they may remain slack. Stops may limit the relative rotation of the tubes. The device may be fitted to the television camera described in Specification 866,301.
Patent GB-498880-A (GB)
Title: Improvements in steering-gear operated switches
IPC: B60Q1/22
Filed: 1937-07-13
Abstract: 498,880. Switches for motor vehicles. EVANS, C. J., and EVANS, S. C. July 13, 1937, No. 19385. [Class 38 (v)] A switching-device, especially for use with motor vehicles, comprises a number of sliding members controlling contact pieces and urged by springs against a sliding rod, so that when a notch in the rod comes opposite to one of the sliding members that member is released and the corresponding contact closed. Figs. 1 and 3 show an arrangement in which the operating-rod 21 slides in a carrier 22 supporting an insulating block 23 in which slide the plungers 37 ... 41. Between the plungers 37 ... 41 and spring contact plungers 26 ... 30 are interposed insulating members 42 ... 46 carrying metal pieces 47 ... 51 adapted to connect the plungers 37 ... 41 with fixed contacts such as 34 attached to terminals when the corresponding plunger is released by a notch 52 on the rod 21. The moving contact pieces 47 ... 51 may be mounted directly on the plungers 37 ... 41 or may be mounted on insulating pieces. They may be arranged to open one pair of contacts while closing another. More than one set of plungers and contacts may be mounted in the same support and operated by the same rod. The operating- rod may be connected to the steering-lever or other member of a car by an adjustable link.