baber/WOPTO huggingface dataset:
Patent GB-893444-A (GB)
Title: Improvements in or relating to loudspeakers
IPC: H04R5/02
Filed: 1959-10-15
Abstract: 893,444. Electrostatic loud - speakers. ENOCK, J. G. Oct. 17, 1960 [Oct. 15, 1959], No. 35010/59. Class 40 (4). An electrostatic loudspeaker having an arcuate surface which radiates normally, is arranged so that the intensity of radiation varies along the length of the arc. Two such loud-speakers 20, 21 may be used in a stereophonic system as shown. If point A is considered the radiation received from loud-speaker 21 is required to be greater than that received from loud-speaker 20 since the earlier arrival of sound from loud-speaker 20 will tend to reduce the sensitivity of the ear to the sound arriving later from loud-speaker 21. Thus the loudspeakers are arranged to radiate more strongly from the inner portions of their arcs. The variation in intensity may be obtained by a mask having an opening tapered along the length of the arc, or by tapering the radiating surface itself. Alternatively, a mask may be used having holes whose number or size varies along the length of the arc.
Patent GB-1284879-A (GB)
Title: Azo dyestuffs containing imidazo-pyridine residues
Inventor: CRABTREE ALLEN
IPC: C09B62/006
Filed: 1968-12-23
Abstract: 1284879 Azo dyes IMPERIAL CHEMICAL INDUSTRIES Ltd 7 Nov 1969 [23 Dec 1968 11 July 1969] 61009/68 and 35041/69 Heading C4P New azo dyes of formula wherein one X is CN and the other is an aromatic radical connected via an azo group are prepared by coupling a diazotized aromatic amine with a compound of the above formula wherein one X is CN and the other H. The product may be metallized and/or converted by a condensation reaction into a fibre-reactive dye. Dyes containing suitable groups (e.g. tertiary amino, hydrazino or etherified hydroxylamino group) may be quaternized. In examples the preparation of mono- and dis-azo and metallized azo dyes of the above formula, which colour various natural and synthetic fibres in yellow and red shades, is described. Specification 1,284,880 is referred to.
Patent GB-802366-A (GB)
Title: Apparatus for distributing and spraying liquids over circular areas
IPC: B01F5/06
Filed: 1954-12-03
Abstract: 802,366. Sprayproducers. UHDE GES, G.M.B.H., F. Dec. 3, 1954 [Dec. 5, 1953], No. 35127/54. Class 69 (3). Liquid from a supply pipe 1, Fig. 1, passes into a whirl chamber 3 via a plate 2 containing an axial passage 6 and passages 4, 5 arranged in concentric circles and inclined so as to create liquid solution in the chamber. The inclinations of the sets of passages 4 and 5 are dissimilar, and the height of the chamber may be variable. The diameters of the two circles in which the passages are arranged are in a ratio lying in the range 0.5 : 1 to 0.7 : 1, and the ratio of the sine of the angle of inclination alpha, Fig. 3, of the passages 4 to the sine of the angle # of the passages 5 is approximately the same as that of the said diameters. In Fig. 5 the inclined passages 16, 17 are formed by adjustable guide blades in a plate 15. The outer series of blades 17 are adjusted by turning the part 19 about its axis whereby abutments 8 contact the blades, and the inner blades are adjusted by a rotatable ring 10 having projections 9. An axial passage 18 is also provided. The device of Fig. 6 includes a whirl chamber 3 supplied via inclined concentric groups of passages 4, 5, and a separate whirl chamber 14 fed from a series of inclined passages 13.
Patent GB-1310976-A (GB)
Title: Thrust bearing
IPC: F16C17/08
Filed: 1970-07-21
Abstract: 1310976 Thrust bearing LEAR SIEGLER Inc 21 July 1970 [13 Nov 1969] 35195/70 Heading F2A A thrust bearing has a member 10 having a circular periphery, and a second member 12 on whose bearing face is fixed a lubricant material 20. The outer periphery of the second member and the lubricant material is deformed around the periphery of the other member so as to restrict axial movement but permit relative rotation. The lubricant material may be a resin impregnated woven fabric. The material engaging the member 10 serves to seal the bearing.
Patent GB-506432-A (GB)
Title: Improvements in the manufacture and production of fine metal and alloy powders
IPC: B22F9/30
Filed: 1937-12-20
Abstract: 506,432. Metal powders; alloys; soldering. POWELL, A. R., and JOHNSON, MATTHEY, & CO., Ltd. Dec. 20, 1937, No. 35273. [Class 82 (i)] [Also in Group XXII] Fine metal or alloy powders for use in decorating ceramics, the production of conducting surfaces on nonconductors, the production of metal paints, or for use as soldering powders, are produced by reduction or dissociation of compounds at temperatures below the melting points of the metals or alloys in the presence of a distributing or dispersing agent which can be removed without detriment to the powdered metal or alloy formed. For example, an oxide, hydroxide or carbonate of a metal is co-precipitated with a distributing-agent consisting of an oxide, hydroxide or carbonate of a metal incapable of reduction or dissociation, and the mixed precipitate is subjected to dissociation or reduction treatment; alternatively, the distributing-agent is impregnated with a solution of a compound of the metal. The distributing-agent is finally removed, or the metal powder is floated away from the distributing-agent. When a mixture of metal compounds is used, a powdered alloy is formed by selecting a suitable temperature ; a tin compound must be mixed with a metal compound capable of reduction at a temperature below the melting point of the alloy formed. With copper and precious metal compounds, tin compounds may be used in any proportion, the reduction temperature being above 600‹ C., and cadmium and zinc compounds may be used in amounts not exceeding 10 per cent, the temperature being between 700 and 800‹ C. In examples: (1) an aqueous solution of a mixture of silver nitrate and calcium or magnesium nitrate is poured into a boiling solution of sodium carbonate or caustic soda, the precipitate is washed and dried and is dissociated by heating in air or is reduced by heating in hydrogen. Silver powder dispersed in a distributing-agent consisting of calcium or magnesium carbonate or oxide is thus produced. The distributing-agent is leached out with acetic acid ; (2) copper powder is produced by using mixtures of copper and calcium nitrates, copper and magnesium sulphates, or copper and magnesium chlorides; (3) gold and platinum powders are obtained by impregnating calcium or magnesium carbonates with solutions of the chlorides of the metals, drying the mixed precipitate and heating it in the presence of a reducing-agent. The distributing-agent is leached out with dilute hydrochloric acid ; (4) a finely powdered alloy of iron, copper and nickel is produced by mixing an aqueous solution of iron, copper and nickel sulphates with a solution of magnesium sulphate, the mixed solution is poured into a hot aqueous solution of sodium carbonate, the precipitate is heated in hydrogen, and the distributing-agent is removed by dilute sulphuric acid.
Patent GB-1045090-A (GB)
Title: Gas turbine engine
Inventor: PETRIE JAMES ALEXANDER
IPC: F02C7/08
Filed: 1963-09-06
Abstract: 1,045,090. Gas turbine combustion chambers. ROLLS-ROYCE Ltd. Aug. 31, 1964 [Sept. 6, 1963], No. 35389/63. Headings F1G and F1L. In a gas turbine engine, the turbine exhaust gas ducting surrounds at least part of the ducting leading combustion air from the compressor to the combustion equipment, whereby the combustion air is heated. The invention is described with reference to two engines, the first of which is identical with that described in Specification 1,043,920 and the second of which is shown in Fig. 3. A single compressor 50 is driven by a single turbine through a shaft 52. Combustion air is led from the compressor through ducts 17 and diffusing air ducts 18 to flame tubes 20. The exhaust gases from the turbine flow through duct 24 around the diffusion air ducts 18, thus, heating the combustion air, before passing to exhaust outlet 25.
Patent GB-850021-A (GB)
Title: Improvements in or relating to fuel elements for nuclear reactors
Inventor: WYATT LESLIE MARK
IPC: G21C3/322
Filed: 1957-11-14
Abstract: 850,021. Nuclear fuel elements. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Oct. 20, 1958 [Nov. 14, 1957], No. 35489/57. Class 39(4). A nuclear fuel element comprises fuel rods or tubes 1 supported in a helical plate or plates 2. The plate is supported in a grooved sleeve 5 having a key 8 to ensure that successive elements form a continuous helical coolant path.
Patent GB-1303923-A (GB)
IPC: C22C21/00
Filed: 1971-07-28
Abstract: 1303923 Aluminium-based alloy FEDERAL MOGUL CORP 28 July 1971 [13 Aug 1970] 35506/71 Heading C7A An aluminium-based alloy contains: It may also contain, as impurities, up to 0À5% Fe, 0À2% Ti, 0À2% Mn, 0À2% Mg; B, Cd, Zn, Pb up to 0À05% each. The alloy may be used as a bearing material, either on its own or as a lining bonded to a backing member, for instance, of steel.
Patent GB-1472410-A (GB)
Title: Iodine dissipating solution
IPC: A61L12/10
Filed: 1975-08-28
Abstract: 1472410 A sterile composition for dissipating iodine FLOW PHARMACEUTICALS INC 28 Aug 1975 [28 May 1974] 35594/75 Divided out of 1472408 Heading A5E A sterile aqueous solution suitable for dissipating available iodine contained in an iodophor at a controlled rate, comprises (a) from 0.01%-5% by wt. sorbic acid or a soluble salt thereof; and (b) from 0.01%-5% by wt ethylenediamine tetraacetic acid or a soluble salt thereof. Preferably the solution also contains from 0.1-2% of an ammonium alkali metal or alkaline earth metal salt of a boron oxyacid, a particularly preferred salt is Na borate. The aromatic properties of the solution can be adjusted by the addition of up to 2% by wt of a water soluble alkali metal or alkaline earth metal salt of a mineral acid, suitable salts are NaCl, KCl, CaCl2, NgCl2 and the corresponding phosphate, nitrates and sulphate salts. Used in conjunction with an iodophor solution the solution is suitable for sterilising contact lenses, particularly of the soft type.
Patent GB-301745-A (GB)
Title: Improvements in and relating to electric discharge devices
IPC: H01T4/10
Filed: 1928-12-03
Abstract: 301,745. British Thomson-Houston Co., Ltd., (Assignees of Evans, L. W.). Dec. 2, 1927, [Convention date]. Protective arrangements.-An electric protective discharge device comprises a porcelain &c. casing 2 and cap 3, the electrodes 8, 13 being spaced by a ring 10 of porcelain, glass, &c., the electrode 13 being a forcing and adjustable fit in its base socket 9. In order to secure the electrode 13 so that it is uniformly spaced, it is adjustably located in the member 9 by means of a gauge-plate, and is thereafter sweated or soldered into position. The electrode 13 rests upon a resistance 15 or upon an intermediate plate 18, the other terminal comprising a plate 4 engaging a spring 19 on the electrode 8. The parts are clamped by bolts 21. In a modification, Fig. 3, the discharge device 23 is located between spring blades 24, 25 on a porcelain terminal base 28, the element 10 in this modification being constructed of glass, mica or quartz.
Patent GB-387302-A (GB)
Title: Improvements in or relating to methods of lasting boots, shoes and the like
IPC: A43D3/02
Filed: 1932-05-12
Abstract: 387,302. Shoe-making. NAAMLOOZE VENNOOTSCHAP EERSTE NEDERLANDSCHE LEESTEN-EN STANZMESSENFABRIEK, 74, Spoordyke, Tilburg, Holland. May 12, 1932, No. 35626. Convention date, May 21, 1931. Divided on 387,195. [Class 17 (ii).] Methods of lasting. -An insole is secured to a longitudinally extensible last and an upper assembled over the last and secured to the insole at at least one end. The two ends of the last are then so moved relatively that they expand longitudinally and also are displaced transversely so that the upper is stretched while the direction of the stretching pull is continuously varied. Preferably the last described in Specification 387,195 is used, the upper being drawn over at the toe portion and tacked in place while the last is contracted. The last is then expanded by rotating the spindle 7, the heel portion sliding downwardly and moving rearwardly. The sides of the upper margin may then be tacked to the inner sole and the shoe finished as usual.
Patent GB-768747-A (GB)
Title: Improvements in or relating to devices for reproducing coloured television images
IPC: H04N9/26
Filed: 1954-12-09
Abstract: 768,747. Colour television tubes. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Dec. 9, 1954 [Dec. 12, 1953], No. 35679/54. Class 39(1). To improve the control by two parallel-wire colour-selection grids in a cathode ray tube, a fine meshed grid 10 ie provided between the selection grids 8, 9 and the field electrode 7 of the screen having a mesh width not greater than onetenth of the spacing between successive wires of a single selection grid, and a focusing electrode, e.g. one of two annular electrodes 11, 13, a close meshed grid, or a combination of both, is disposed between the colour selection grids and scanning deflections field. The colour grids are not necessarily co-planar, and the screen is luminescent or incandescent and may be monochromatic, its images being projected through colour filters. The focusing electrode may be a frustro-conical ring with or without a mesh grid closing the end nearest the screen ; or two annular rings without a mesh grid or, as shown in Fig. 4, with a mesh grid 12 closing the inner surface of the first ring 11. Two frustroconical electrodes may be associated so as to give the beam an orthogonal approach to the selection grids, Fig. 5 (not shown). The focusing electrode may be a grid 16 alone, or advantageously, as shown in Fig. 7, associated with an annular electrode 17 which is at a potential lower than that of the grid 16, which itself exceeds the mean potential of the colour grids 8, 9, but is lower than that of the screen 7. The mean colour selection potential does not exceed one tenth the potential of the screen and the potential of the fine meshed grid is at most equal to the mean potential of the former and is not more than 10V lower than its lowest potential. The electrodes 8, 9, 11 form a retarding lens up to which the electrons travel at high velocity yet they reach the selection grids at a low velocity and are there controlled by small voltage variations.
Patent GB-325611-A (GB)
Title: Improved device for throwing projectiles from air-craft
IPC: B64D1/04
Filed: 1928-12-04
Abstract: 325,611. Van Heijst & Zonen, J. B., and Heijst, F. W. van. Dec. 4. 1928. Dropping bombs from aircraft.-Relates to apparatus in which a bomb 1, Fig. 1, is held up against crutches 3 on an aircraft by a fork 5 screwed up by a hand-wheel 4 and provided with a band 6 encircling the bomb and locked by a releasing gear 7, a centring pin 8 being provided on the aircraft to fit into a hole in the bomb. According to the invention, the hole in the bomb is fitted with a spring plunger 10, Fig. 3, which completes the contour of the bomb when the centring pin leaves the hole when the bomb is dropped, so that irregularities of air resistance are avoided while the bomb falls.
Patent GB-173424-A (GB)
Title: Improvements in or relating to book-stands and like furniture
IPC: A47B13/16
Filed: 1920-12-20
Abstract: 173,424. Philip, G. S., and Philip & Son, Ltd., G. Dec. 20, 1920. Globes. - A celestial or terrestial globe D is mounted in the top C of a pedestal book-case, on pivots E<1> within the usual meridian band E, which is slidably supported within slots G<1> of a flat horizon plate H and within a jaw F of a block F<1> on a shelf B. In application to a rotary book-case the block F' and plate H are secured to the central pillar.
Patent GB-1080973-A (GB)
Title: Process for the preparation o fvinyl polymer impregnated nitrocellulose
Inventor: FERGUSON JAN
IPC: C09D101/18
Filed: 1965-08-20
Abstract: Nitrocellulose impregnated with a monomer containing a vinyl, vinylidene or vinylene group is prepared by contacting the nitrocellulose with the monomer dissolved in a liquid medium which has substantially no solvent action on the nitrocellulose. The monomer may then be polymerized within the nitrocellulose by heating and chemical bonding takes place between the monomer and nitrocellulose. The polymerization may be effected before or after the liquid medium is removed and is preferably carried out in the presence of a catalyst, e.g. benzoyl peroxide.  The liquid medium is preferably present in sufficient quantity to hold the nitrocellulose in suspension. Prefered liquids are water and water containing water-miscible organic liquids, e.g. ethanol, n-propanol and isopropanol.  Suitable monomers are methyl methacrylate, butyl methacrylate, lauryl methacrylate, acrylonitrile, styrene, acrylamide, methacrylamide, ethyl acrylate, dibutyl maleate, dioctyl maleate, methyl acrylate, 2-ethyl hexylacrylate and triethylene glycol dimethacrylate.  The monomer may contain a polymerizable group other than a vinyl, vinylidene or vinylene group, e.g. trimethylolpropane diallyl ether methacrylate and this group may be polymerized with a further polymerizable compound, e.g. trimethylene glycol dimethacrylate.  Solutions of the polymer-impregnated nitrocellulose may be used as surface-coating compositions.
Patent GB-1037809-A (GB)
Title: Improvements in or relating to rotary printing machines
IPC: B41F5/02
Filed: 1963-09-12
Abstract: 1,037,809. Printing apparatus. SCHNELLPRESSENFABRIK FRANKENTHAL ALBERT & CIE A.G. Sept. 12, 1963 [Sept. 15, 1962], No. 35919/63. Heading B6C. In a rotary printing machine sheets are printed in two colours each colour being applied during one revolution of associated impression and forme cylinders 6, 9. Each sheet is fed from a device 3 on to grippers 5 and is thus held against an impression segment 7 whilst passing in contact with a forme 8 inked by rollers 18 to 21. The sheet bearing one colour impression is borne by the cylinder 6 past a delivery drum 11 to a drum 13 the grippers 12 of which operate such that the sheet is passed once around the drum 13 prior to re-engagement with the impression cylinder, this time in contact with a segment 15. The second colour is subsequently applied as the sheet is passed over a forme 16 inked by rollers 22 to 25. The printed sheet is then stripped from the cylinder 6 by grippers 10 on the drum 11 and is transferred to delivery mechanism 17. The inking roller groups 18-21 and 22-25 are controlled by mechanism such that each group automatically rises from the forme cylinder 9 during the passage of the unassociated forme therebeneath. The mechanism also causes the rollers to be raised one by one from the cylinder as they pass over the gaps between the formes. The machine may be used for single colour printing, the inking control mechanism in this case being arranged to allow the rollers to remain constantly in the inking position.
Patent GB-342426-A (GB)
Title: Process and apparatus for repeatedly removing uniform quantities of a granular, fibrous or other material from a supply
IPC: A24C1/02
Filed: 1929-11-23
Abstract: 342,426. Cigar-making machines &c. UNIVERSELLE CIGARETTENMASCHINEN-FABRIK J. C. MœLLER & CO., and STELZER, F. H. B., 48, Zwickauer Strasse, Dresden, Germany. Nov. 23, 1929, No. 35949. [Class 130.] Measured quantities of tobacco are separated from a mass in a funnel 7 by a vertically reciprocating member 9 having a recess 10 at its upper end. A comb 13 works over the surface of the material so lifted which then passes through the suction tube 28 and is deposited on one of the flaps above the preliminary pressing channels. The member 9 is reciprocated by a cam 12 and lever 11, and may be hollow and subjected to suction whereby a more uniform quantity is drawn against the perforated base of the measuring recess. The comb 13 is oscillated with its shaft 18 by toothed segment 21 and lever 22 from a cam 26. A further motion is given by its being connected to the strap 16 of a belt-driven eccentric 19 loose on the shaft 18. An oscillating motion may be given to the member 9 by fitting it with a pin constrained to move in an undulating groove in a stationary sleeve. The material raised may be transferred by suction to a perforated recess of predetermined dimensions in the end of the tube 28, combed while held therein, and transferred for further treatment by swinging the arm and terminating the suction.
Patent GB-870473-A (GB)
Title: Improvements in and relating to aerials
Inventor: WEBSTER CORNELIUS ROY
IPC: H01Q5/15
Filed: 1958-11-10
Abstract: 870,473. Aerials. WOLSEY ELECTRONICS Ltd. Nov. 23, 1959 [Nov. 10, 1958], No. 35987/58. Class 40(7) A dual-band aerial comprises a tubular dipole A, B, resonant in the higher frequency band, and a second dipole C, D, resonant in the lower band, the centre portion of the second dipole being mounted inside the tubular dipole. Bolts E, F secure together the elements of the dipoles and a feeder is connected at G, H. The assembly may be encased in an insulating sheath. Directors and reflectors of lengths appropriate to the higher and lower frequency bands, respectively may be provided. The aerial may operate on more than one frequency in one band.
Patent GB-772515-A (GB)
Title: A method for the manufacture of metals and alloys free from undesired gases
IPC: C22B9/05
Filed: 1954-12-15
Abstract: Undesired gases are removed from and their absorption prevented in molten metals by blowing a washing gas against the surface of the molten metal at such speed that the gas layer next to the metal surface is continually removed, the melt tapped and allowed to solidify in an atmosphere of the washing gas.  The washing gas may be a neutral gas, e.g. a rare gas, or may be the vapour of a metallic compound the metal of which may be alloyed with the melt, e.g. chromous chloride, or a metal vapour, e.g. antimony, or contain a gas, e.g. nitrogen, at a vapour pressure in equilibrium with a desired nitrogen content in the melt.  The process is stated to be particularly useful in alloying easily nitrided metals with a molten metal, e.g. the addition of ferro-titanium to steel.
Patent GB-325624-A (GB)
Title: Improvements in dryer felts for use on paper making machines
IPC: D21F1/00
Filed: 1928-12-10
Abstract: 325,624. Hindle, T. Dec. 10, 1928. Multiple fabrics for use as dryer felts in papermaking machines have additional reinforcing warp threads 5, 8 introduced into the inner layer or layers so that the felt may have an open cellular porous outer surface with one or more dense intermediate layers. The reinforcing warp threads are of the same material as the other warp threads 1, 2, 3, 4, 6 and 7.