baber/WOPTO huggingface dataset:
Patent GB-576130-A (GB)
Title: Grinding wheels and other solid abrasive bodies and method of making the same
IPC: B24D3/28
Filed: 1942-11-02
Abstract: Grinding wheels and like abrasive bodies are obtained by wetting a quantity of abrasive grain with a monomeric polyglycol dichloride selected from the di-, tri-, tetra- and pentaglycol dichlorides and stirring into the mixture an aromatic formaldehyde condensate obtained by condensing a primary aromatic amine and formaldehyde in the presence of a strong acid, e.g. phosphoric, spreading the mixture in a mould and pressing and curing at resin curing temperatures. Aromatic amines specified are aniline, toluidines, and diamino diphenyl methane.  Acids of equivalent strength to phosphoric are hydrochloric, hydriodic, tri- and di-chlor acetic, maleic, oxalic picric, and sulphuric. Halogenated organic compounds, e.g. polyvinyl chloride, polyvinylidene dichloride, rubber hydrochloride, chlorinated rubber, halogen substituted paraffins, halohydrins, may also be added as described in Specification 538,406.  Abrasives specified are alumina, emery, corundum silicon carbide, quartz, glass, garnet or diamonds.  Furfural may be added as an additional wetting and plasticising agent.  The furfural and the dichloride are stated to give cross-linkages with the benzene rings in the aromatic amine condensate.  Fused alumina grit is mixed with dichlor-diethyl ether and anhydrite and aniline-formaldehyde resin are added.  The mix is cold moulded at a pressure of 3 tons per sq. inch and is then baked for 8 hours at 100 DEG  C.
Patent GB-459223-A (GB)
Title: Improvements in or relating to lock washers
IPC: F16B39/24
Filed: 1934-05-23
Abstract: 459,223. Making washers. GILL, H. A., 1, Chancery Lane, London.-(Illinois Tool Works; Chicago, U.S.A.) May 23, 1934. No. 15452. [Class 83 (ii)] [See also Group XXV] A washer is formed with overlapping prongs on its outer or both margins by expanding the material at these margins without altering the diametrical dimensions of the washer. The margins are afterwards cut to form radial prongs. In the preferred method, the margin of the washer is first formed with undulations, which are then slit at their crests B. Adjacent edges 26 of these are moved axially and the undulations flattened to provide over-lapping prongs 22. The amount of overlap is substantially uniform over the radial extent of the prong. This method may be applied to the inner margin only. Specification 315,424, [Class 89 (i)], is referred to.
Patent GB-1321132-A (GB)
Title: Drilling fluid compositions
IPC: C09K8/28
Filed: 1971-05-18
Abstract: 1321132 Drilling fluid R P WILLETT 18 May 1971 [3 June 1970] 15486/71 Heading E1F A drilling fluid comprises a hydrocarbon oil of Saybolt viscosity of 35 to 200 at 100 F, an emulsifier and an ethylene oxide adduct of an ester of a polyalkanolamine and a high molecular weight fatty acid. Other conventional adducts may be present.
Patent GB-327621-A (GB)
Title: Improvements in or relating to turbines and turbo-compressors
IPC: F01D1/34
Filed: 1929-05-18
Abstract: 327,621. Jarvis, C. May 18, 1929. Radial-flow turbines, fans, and pumps; rotary chamber fans and pumps. - A rotor 1 which revolves on a shaft 2 has peripheral recesses 4 which, together with similar recesses 5 in a stator 3, form troughs of approximately elliptical shape in circumferential sectional view (see Fig. 5). Fluid to be compressed enters a port in the casing and a port 10 to the troughs around which it whirls and is delivered to an annular space 7. Radial guide vanes 11 and 12 are provided in the rotor and stator respectively. The arrows should be reversed when the machine acts as a turbocompressor.
Patent GB-479729-A (GB)
Title: Improvements in or relating to roofs and tiles therefor
IPC: E04D1/04
Filed: 1937-06-05
Abstract: 479,729. Tiled roofs. MAHADEVA, S. June 5, 1937, No. 15665. [Classes 20 (iv) and 87 (i)] A tiled roof comprising a plurality of straight rows of alternately convex and concave tiles is arranged so that the concave tiles hook on to horizontal battens 20, Fig. 5, and the convex tiles hook on, at their upper ends, to the adjacent concave tiles. The concave tile is provided, as shown in Figs. 1 and 5, on its underface at the top with a lip 11 for hooking on to a batten 20, and with a U-shaped portion 12 which is substantially level with the underface of the tile and is adapted to engage a face 23 of the batten 20 to prevent rocking of the tile. The convex tile, Figs. 3 and 5, is provided with a flange 16 at the upper edge for engaging the cut-away corners 14 of the adjacent underlying concave tiles. Abutments 17, 18 on the underface of the convex tile contact with the long edges of the concave tiles, although such abutments are not essential. In order that each tile may fit at its lower end over the upper end of the tile next below, the concave tiles are wider at the upper end than at the lower end, and the convex tiles are wider at the lower end than at the upper end. The narrow lower ends of the concave tiles, being cut-away at 15, fit against the cut-away parts 19 of the convex tiles.
Patent GB-1196124-A (GB)
Title: Improvements relating to Container Closures
Inventor: DAVENPORT NOEL ERNEST
IPC: B21D51/46
Filed: 1967-04-05
Abstract: 1,196,124. Moulding container closures. W. R. GRACE & CO. Ltd. 2 April, 1968 [5 April, 1967], No. 15671/67. Addition to 1,112,023. Heading B5A. The process of parent Specification 1,112,023 is modified to comprise two stages, a pellet being flattened into a disc in the upturned container closure shell before being compressed into the shape of a gasket by a cold moulding member.
Patent GB-827681-A (GB)
Title: Improvements in and relating to the separation of hydrogen from gaseous mixtures containing hydrogen
Inventor: DARLING ALAN SYDNEY
IPC: C01B3/50
Filed: 1957-05-17
Abstract: In purifying hydrogen or separating hydrogen from a gaseous mixture by passing the gas over a heated palladium membrane or through a heated palladium tube and separately collecting the pure diffused hydrogen and the undiffused gases, the membrane or tube is maintained at a temperature above that at which the a -phase of the palladium-hydrogen system is transformed to the b  phase. Cracking and distortion of the membrane are thus avoided.  The variation of the transformation temperature is shown in a graph, and it is preferred that this temperature be maintained even when the apparatus is not in use.  In the latter case, an atmosphere of reducing gas, e.g. hydrogen, may be maintained around the membrane or tube when not in use.  The temperature should preferably not fall below 350 DEG  C. irrespective of the pressure.
Patent GB-1033255-A (GB)
Title: Silver halide emulsions with increased sensitivity
Inventor: MULLER-BARDORFF WOLFGANG
IPC: G03C1/10
Filed: 1964-04-16
Abstract: 1,033,255. Photographic silver halide emulsions. AGFA A.G. April 16, 1964 [April 24, 1963], No. 15856/64. Heading G2C. Photographic silver halide emulsions are chemically ripened in the presence of simple or complex salts of gold or metals of Group VIII of the Periodic Table having an atomic weight greater than 100 which are soluble in water or in solvents miscible with water, together with compounds of the formula wherein R is hydrogen or an alkyl or aryl group which may be substituted, X is hydrogen, hydroxyl or halogen and n is an integer from 1 to 5, and in which the ring can be substituted ortho or para to the hydroxy. group by alkyl or alkoxy groups having up to 3 carbon atoms, halogen atoms or hydroxy groups. Reducing agents such as hydroxycarboxylic acids, e.g. hydroxyacetic acid, d-gluco- α-hexonic acid, d-gluco-α-heptonic acid, aldosugars, dimethylformamide, aliphatic aminocarboxylic acids and nitrilotriacetic acid may also be present and may be added separately or first mixed with the metal salt and hydroxybenzylamine compound. Gold salts include chlorobromo- or iodoaurites of calcium, strontium, cadmium or gallium.
Patent GB-1130444-A (GB)
Title: Production of castings
Inventor: TAYLOR PERCY RONALD
IPC: B22C7/02
Filed: 1966-04-12
Abstract: 1,130,444. Mould and core materials and linings. MONSANTO CHEMICALS Ltd. 3 March, 1967 [12 April, 1966], No. 15908/66. Heading B3F. [Also in Divisions B5 and C3] A process for producing a metal casting comprises forming a shell mould on a disposable pattern using a particulate ceramic refractory material, a binding agent and a particulate fusible material, removing the pattern, firing the mould and casting metal into the mould, the fusible material melting at a temperature above the firing temperature and below that at which the metal is cast. The fusible material is a ferro-aluminium alloy with 25-50 wt. per cent aluminium or an iron silicon zirconium alloy and these may be used with low-carbon steels, low-alloy steels, high-carbon, high-alloy tool steel, or a ferritic or martensitic stainless steel. The mould is made so that the layer which contacts the casting contains no fusible material. The material in the outer layers melts in the casting process and forms an impermeable layer preventing oxygen from reaching and oxidizing the outer layer of the casting. The aluminium and iron present in the mould also combine with free oxygen present and thereby remove it from the pores of the mould.
Patent GB-108087-A (GB)
Title: Improvements in Tappet-valves and Valve Gear for Internal Combustion Engines.
Inventor: BREWSTER JOHN MATHIESON
IPC: F01L1/30
Filed: 1916-11-07
Abstract: 108,087. Brewster, J. M. Nov. 7, 1916. Valves: valve-gear.-A lift valve A, although more than one valve may be used, is actuated positively in both directions by gear comprising a pair of cams Q W which engage respectively the end of a valve rod N directly and a bellcrank U connected to a pin 8 on the valve rod. The valce lever L bears upon a collar F on the valve stem and is engaged upon its top side by a loose collar held down by a spring J. An igniter 0 is mounted in the stem of the valve.
Patent GB-1121723-A (GB)
Title: Stable aqueous dispersions of o-dianisidine fast to storing, for the preparation ofwater-insoluble azo dyestuffs on fibrous materials
IPC: D06P1/60
Filed: 1966-04-12
Abstract: Aqueous dispersions of o-dianisidine contain as dispersing agent: RO-Ar-CH2-Ar-O-(CH2CH2O)n -CH2CH2OR where Ar is an arylene radical, R is a C1-3 alkyl group and n is 7-50.  Various compounds are specified in which R is methyl or ethyl, Ar is naphthyl or phenyl and n is 14-29.  Other ingredients specified are fungicides (sodium phenol pentachloride) and anti-freeze agents (glycol, glycerin, sorbitol).
Patent GB-240103-A (GB)
Title: Improvements in or relating to machines for applying cream and like materials to biscuits and the like
IPC: A21C15/00
Filed: 1924-06-19
Abstract: 240,103. Peek, Frean, & Co., Ltd., and Rondolin, L. June 19, 1924. Coating bakers' goods.-In a coating-machine wherein biscuits are discharged independently from a magazine on to a belt which carries them into contact with a stencil belt by which the coating- material is applied, a frictional drag is applied to each biscuit as it leaves the magazine 7 whereby the travel of the biscuit is controlled. The drag is applied by a pivoted gravity member 22 which may have a slightly serrated under surface. Specification 239,942 is referred to.
Patent GB-1352542-A (GB)
Title: Process for preparing a3,4,9,10-perylene-tetracarboxylic acid dianhydride pigment
IPC: C09B67/10
Filed: 1971-05-20
Abstract: 1352542 3,4,9,10 perylene tetracarboxylic acid dianhydride pigment FARBWERKE HOECHST AG 20 May 1971 [23 May 1970] 16011/71 Heading C4P 3,4,9,10-perylene tetracarboxylic acid dianhydride pigments are prepared by precipitating free 3,4,9,10 perylene tetracarboxylic acid from an aqueous alkaline solution of an alkali metal, e.g. K<SP>+</SP> or tertiary amine salt thereof by means of a mineral or organic acid at a temperature of -20C.-+30C. and treating the 3,4,9,10 perylenetetracarboxylic acid with an organic solvent and isolating the dianhydride pigment so formed. The acid used for the precipitation is suitably hydrochloric, sulphuric, nitric, phosphoric, an C 1 -C 4  aliphatic carboxylic acid or an aromatic sulphonic acid. The acid may be used in the form of an acqueous solution having a concentration of 10-50% by weight or in the form of a solution in an organic solvent. The solvent used for converting the free acid to its dianhydride is suitably an alcohol, ketone, ester, or an aliphatic or aromatic hydrocarbons. The solvent may be added before the addition of the acid, simultaneously with the acid or after the precipitation of the tetracarboxylic acid. The solvent is used in an amount of 5-30 times the quantity of dyestuff in the suspension, calculated on the dry weight basis. The dianhydride pigments give red shades in lacquers and on plastics materials, e.g. PVC, polystyrene and polyacrylonitrile.
Patent GB-612553-A (GB)
Title: Improvements in loading machines
IPC: E02F3/352
Filed: 1946-05-27
Abstract: 612,553. Scoop shovel machines. AKTIEBOLAGET ATLAS DIESEL, and LARCEN, J. A. May 27, 1946, No. 16020. [Class 68 (i)] [Also in Group XXX] In a loading machine comprising a shovel carrying vehicle coupled to a conveyer carrying vehicle into which it discharges, a vehicle 1 has a shovel 3 swingable over the vehicle from a filling position at the front end or sides of the vehicle to a discharge position at the rear. The shovel 3 is mounted upon an upper deck 16 which is swingable about a vertical axis passing through the discharge position of the shovel. A conveyer carrying vehicle 5 is coupled to the shoveling vehicle at a point in the same vertical axis about which the conveyer trough 7 is also swingable on a guide rail 12, the charging hopper 14 of the conveyer being situated immediately beneath the discharge position of the shovel and having walls which extend upwards to overlap the shovel when in such discharge position. Specification 590,200 is referred to.
Patent GB-479930-A (GB)
Title: Device for liquid treatment of cakes of fibrous material
IPC: D06B5/14
Filed: 1936-06-08
Abstract: Cakes of fibrous material, such as artificial silk, are each supported for liquid treatment between spaced supports in a chamber and the liquor is caused to loosen and move the threads of the cakes by acting thereon from opposite directions thereof in the form of jets from circular slots in the supports.  In a chamber 6 on supports 7 may be arranged a series of superposed stacks of cakes for treatment by a liquid which is circulated through the cakes from a chamber 5.  Each support 7 has tubular members 8 which fit into one another as shown, the uppermost support 7 having only one tubular member.  A cap plate 25 carrying a spring-pressed seating plate 22 is pressed against the top support 7 by a nut 17 and screw bolt <PICT:0479930/IV/1> 16.  Liquid circulated by a pump in the direction of the arrow I passes into the cakes from opposite ends in the form of jets from circular slots 71 in hollow rings 18 on the supports 7. The upper and lower supports 7 have only a single ring 18.  By adjusting the pressure exerted by the springs on the plate 22, it is possible to maintain a suitable liquid pressure.  Around the support 7 may be arranged protecting rings 29 which at their upper ends are attached to members 30, and these serve to limit the outward swelling of the cake.  As shown in the case of the lower support 7, the protecting ring 32 may be tubular and communicate with a hollow ring 31 provided on its inner periphery with a slot 33, or a series of slots or holes.
Patent GB-111133-A (GB)
Title: Improvements in Casting Steel Ingots.
IPC: B22D7/06
Filed: 1916-11-10
Abstract: 111,133. Armstrong, Whitworth, & Co., Sir W. G., and Ashdown, H. H. Nov. 10, 1916. Drawings to Specification. Casting processes.-In casting ingots, the sides are cooled and then cooling proceeds from the base upwards. Moulds.-The mould described in Specification 105,61'7 preferably is employed.
Patent GB-182661-A (GB)
Title: Improvements in, or connected with, the manufacture and production of caustic soda
IPC: C01D1/22
Filed: 1921-06-11
Abstract: A solution of sodium hydrate, which may be of 20 per cent strength, is made by caustifying sodium carbonate with lime in two stages.  In the first stage the concentrations are such that the double salt Na2CO3-CaCO3 is not formed in appreciable quantity, then the precipitated calcium carbonate is separated, and to the solution more lime and sodium carbonate are added, the double carbonate being produced.  The solution obtained contains about 5-6 per cent of sodium carbonate.  The double carbonate may be decomposed with water to obtain sodium carbonate.ALSO:The caustification of sodium carbonate solution is effected in two stages, in the first of which a partial caustification is effected with the production of calcium carbonate.  The calcium carbonate is separated and the solution is treated with more lime and sodium carbonate, when the double carbonate is formed.
Patent GB-925724-A (GB)
Title: Composition for enzyme determination
IPC: C12Q1/52
Filed: 1961-05-04
Abstract: A diagnostic composition for glutamic-oxalacetic transaminase comprises L-aspartic acid, a -ketoglutaric acid, a buffer providing a pH of 6,5-8 and an azonium salt coupling in said pH range with oxalacetic acid to give a coloured product.  In place of pure L-aspartic acid, DL-aspartic acid may be used.  Suitable buffer compounds are sodium triphosphate, sodium barbital and tris (hydroxymethyl) aminomethane. Azonium salts to be used are 4-amino-2:5-diethoxybenzanilide diazonium chloride, diazotised 2-amino-4-chloro-anisole, diazotised 5-chloro-o-toluidine, p-chloro-o-toluidine diazonium chloride, diazotised 4-benzoyl amino-2:5-dimethoxy-aniline, 6-benzamido-4-methoxy-m-toluidine diazonium chloride, 4-benzamido-2:5-diethoxy-aniline diazonium chloride and tetrazotised o-dianisidine.  The composition may if desired be in the form of tablets, in which inert diluents such as lactose, leucine, stearic acid and polyvinylpyrrolidone may be incorporated.  The composition is used by mixing the sample and the composition (or a solution of a tablet), incubating, at a standard temperature, e.g. 37 DEG C. and for a standard time, e.g. 20 mins, cooling and comparing the resultant colour with a standard colour chart or a spectrophotometric measurement.
Patent GB-1455418-A (GB)
Title: Fluidic devices
IPC: F15C1/02
Filed: 1973-04-04
Abstract: 1455418 Fluid regulation UNITED KINGDOM ATOMIC ENERGY AUTHORITY 28 March 1974 [4 April 1973] 16189/73 Heading G3H A vortex diode or amplifier having tangential or radial main flow port or ports 2 in its peripheral wall and an axial port 3 in an end-wall, has a projection 6 located opposite to the axial port. The projection and the region 7 where the port 3 joins the vortex chamber are curved as shown to reduce variation in the cross-sectional area of the main flow-path and to reduce flow separation. The vortex chamber also has control flow passages 5.
Patent GB-1107879-A (GB)
Title: Improvements in or relating to earth leakage protection devices
IPC: H02H3/33
Filed: 1965-04-15
Abstract: 1,107,879. Protective systems. J. A. CRABTREE (PROPRIETARY) Ltd. 15 April, 1965 [17 April, 1964], No. 16218/65. Heading H2K. In an earth leakage protective system comprising a core-balance transformer 3 having at least two primary windings 4, 5 constituted by or connected in supply conductors to a load 8 and a secondary winding 12, the transformer is provided with an additional primary winding 15 having one terminal connected to at least one of the supply conductors in such a manner that under normal operating conditions this terminal is substantially at neutral or earth potential. The other terminal of the winding 15 is connected to an earth conductor of the supply system and/or to a local earth and/or to a neutral conductor of the supply system so that any fault producing a potential difference between the terminals of the additional primary winding effects the opening of a circuit-breaker 9. In the arrangement shown, one terminal of the winding 15 is connected to the neutral conductor 5 and the other is connected through impedances 18, 19 to the earth conductor 23 and to a local earth 27. Each terminal of the winding 15 may be connected to more than one conductor through impedances. An amplifier 13 may be provided and have its power supply unit connected to several conductors through impedances 34-37 to guard against lack of operation due to open circuiting of a conductor. A reservoir capacitor 39 may be provided. Reference is made to the use of the secondary winding as the additional primary winding and to the use of more than one additional primary winding.
Patent GB-485421-A (GB)
Title: Improvements in or relating to switches of the type use in automatic telephone systems
IPC: H01H67/06
Filed: 1937-06-11
Abstract: 485,421. Automatic exchange switches. MIX & GENEST AKT.-GES. June 11, 1937, No. 16272. Convention date, June 19, 1936. Drawings to Specification. [Class 40 (iv)] A moulded terminal bank comprises also feed springs for the wipers and feed springs for the operating circuits of the switch. The invention is described in connection with a switch identical with that described in Specification 484,540.
Patent GB-1491062-A (GB)
Title: Quick-acting valve assembly
IPC: F16K31/06
Filed: 1975-04-21
Abstract: 1491062 Valves GENERAL SIGNAL CORP 21 April 1975 [28 June 1974] 16334/75 Heading F2V A valve has a bore 5 in a body 1 in which seats 77, 55 are located between an inlet 11, an outlet 12, and an exhaust 13, a valve carrier 57 with spherical faced washers (123, 121) being movable by a solenoid 91 to selectively engage the seats. A loading spring 89 adjustably set by a screw 87 biases the carrier away from seat 77. Static pressure only is balanced between the ends of the carrier and washer assembly by an axial bore (111) running into a diametral bore (115) in the nut 67 retaining the washers on the carrier.