baber/WOPTO huggingface dataset:
Patent GB-1505153-A (GB)
Title: Folder for retaining a stack of documents
IPC: B42F13/14
Filed: 1976-05-03
Abstract: 1505153 Folders COPELAND-CHATTERSON CO Ltd 3 May 1976 [22 Aug 1975] 35034/75 Heading B6E A folder for a stack of, e.g. cheques comprises an elongate sheet 8, Fig. 5, foldable about a transverse line and having pairs of holes adjacent edges parallel to the line, one pair of holes receiving pins 4 of an underlying portion of a clip 1 and the pins which are engaged also by perforations in the cheques are engaged by holes 3 in an overlying portion of the clip to contain the stack in the folder. The folder may be folded about the line and the folded portions of the folder held in position by engaging the other pair of holes 10 in the folder with the pins 4.
Patent GB-850612-A (GB)
Title: Improvements in or relating to prevention of ice formation of high voltage overhead transmission lines
Inventor: CURTIS GORDON ALFRED
IPC: H01B9/00
Filed: 1957-11-12
Abstract: 850,612. Transmission line arrangements. BRITISH INSULATED CALLENDER'S CABLES Ltd. Nov. 12, 1958 [Nov. 12, 1957], No. 35245/57. Class 38 (4). In a transmission line having two or more parallel connected spaced conductors 4, 5 per phase or pole, and having a heating current circulated round the loop formed by the conductors 4, 5 from a supply 10, 11 to prevent or remove ice formation, impedances are provided to prevent the supply being short-circuited. In a D.C. transmission line, the supply is derived from a transformer 10, and the impedances are in the form of chokes 12. A parallel capacitor 13 or a series capacitor 113 may be provided to improve the power factor of the heating current. In an A.C. transmission line, the chokes are replaced by capacitors, and the supply is derived from a rectifier. The insulation of the transformer 10 must be suitable for the full-line to earth voltage.
Patent GB-912677-A (GB)
Title: Improvements relating to ladders
IPC: E06C1/10
Filed: 1960-10-14
Abstract: 912,677. Ladders. MATTHEWS, C. H. Sept. 29, 1961 [Oct.14, 1960], No. 35254/60. Class 20 (2). Ladders 2 are joined end to end by two box section tubes 1 adapted to engage over the ends of the ladder stiles and joined together by a member 5 adapted to form a rung.
Patent GB-1165317-A (GB)
Title: (2-Propynyloxy)-Beta-Nitro-Styrenes and a Process for the Production of these Compounds
IPC: C07C43/20
Filed: 1968-07-24
Abstract: 1,165,317. (2-Propynyloxy)-#-nitro-styrenes. MEIJI SEIKA KAISHA Ltd. 24 July, 1968 [10 Feb., 1968], No. 35297/68. Heading C2C. Novel compounds of Formula I, in which R is hydrogen or C 1-4  alkyl, X is hydrogen or halogen and n is 1 or 2, are prepared by reacting a compound of Formula II with a compound of formula R-CH 2 -NO 2 . The compounds I are stated to inhibit the production of tumour cells.
Patent GB-865313-A (GB)
Title: Coumarin derivatives
Inventor: CAVALLINI GUIDO
IPC: C07D311/16
Filed: 1959-10-19
Abstract: The invention comprises ethers of the general formula: <FORM:0865313/IV (b)/1> (in which R represents a straight or branched alkylene chain having 1-4 carbon atoms and Y represents a nitrogen atom forming part of a ring system) and acid addition salts thereof, and the preparation of these bases by reacting 4-methyl-5, 7-dihydroxycoumarin with a compound of the formula HalRY (where Hal represents a halogen atom) in an anhydrous organic oxygen-containing solvent, e.g. isopropyl alcohol.  Illustrative products are 4-methyl-5, 7-bis-(b -morpholine-ethoxy)- coumarin, 4-methyl-5, 7-bis-(g -morpholine-propoxy)- coumarin, 4-methyl-5, 7-bis-(b -piperidine-ethoxy)- coumarin and 4-methyl-5, 7-bis-(g -piperidine-propoxy)- coumarin.ALSO:A pharmaceutical preparation comprises an ether of the formula <FORM:0865313/VI/1> (in which R represents a straight or branched alkylene chain having 1-4 carbon atoms and Y represents a nitrogen atom forming part of a ring system) or an acid addition salt thereof, together with a pharmaceutical carrier.  The preparation may be in the form of tablets, linctuses, syrups, capsules or lozenges.  Specified salts are hydrobromides, hydriodides, methosulphates, neutral sulphates, acetates, tartrates, benzoates and salicylates.
Patent GB-537538-A (GB)
Title: Improvements in machines for use in the froth flotation of minerals
IPC: B03B11/00
Filed: 1938-12-05
Abstract: 537,538. Concentrating ores. PETERSEN, L, S. Dec. 5, 1938, No. 35425. [Class 82 (ii)] A flotation cell which is substantially circular in plan is provided with means for removing the froth consisting of one or more skimmers each comprising a number of blades spaced apart on an arm which is mounted to rotate in a horizontal plane about a central vertical axis. In the form shown, the skimmers consist of arms 9 carrying adjustable blades 10 and mounted on a hub 14 driven by gearing from the motor 19 which drives the impeller 2. The skimmers pass the froth to an annular trough 22 wherein plates 23 pass it to outlets 24. In a modification the blades are mounted on endless conveyers carried by the arms 9.
Patent GB-368679-A (GB)
Title: Improvements in or relating to cold rolling mills
IPC: B21B13/02
Filed: 1931-12-22
Abstract: 368,679. Cold rolling. MASCHINENBAU AKT.-GES. VORM. EHRHARDT & SEHMER, Saarbr³cken, Germany. Dec. 22, 1931, No. 35486. Convention date, Dec. 27, 1930. [Class 83 (iv).] In a cold rolling mill in which the rolls a are displaced laterally from the axial plane of the support rollers b and provided with bearings f to take the thrust, internally cooled rollers e are interposed between the thrust bearings and the internally cooled rolls a.
Patent GB-1083130-A (GB)
Title: Process for vulcanisation of elastomers with a small amount of unsaturation
Inventor: ALICOT MICHEL JEAN CAMILLE
IPC: C08K5/39
Filed: 1966-08-09
Abstract: Butyl rubber and EPT rubber are vulcanized in the presence of a vulcanization accelerator of formula <FORM:1083130/C3/1> wherein R and R1 are alkyl, cycloalkyl or aryl groups which may be linked together so as to form a N-containing heterocyclic ring, and n is 2 or 4.
Patent GB-469391-A (GB)
Title: Improvements in or relating to the manufacture of cellulose ethers
IPC: C08B11/02
Filed: 1935-12-23
Abstract: Water-soluble methyl ethers of cellulose are obtained by a two stage process comprising the treatment of cellulosic material in the presence of aqueous alkali with a restricted proportion of dimethyl sulphate in such manner as to form a simple methyl ether insoluble in water but capable of being brought into solution in dilute caustic soda, and the subsequent treatment of the intermediate product with a lower alkyl chloride at a raised temperature.  If desired, a further proportion of aqueous alkali may be added to assist the second etherification step.  If a simple methyl ether of cellulose is required, methyl chloride is used for the second etherification step. Mixed cellulose ethers are obtained if other alkyl chlorides such as ethyl chloride are used.  The etherification with dimethyl sulphate may be carried out in an incorporating machine of the kind used for kneading soda cellulose.  It may be carried out at raised temperature and in the presence of not more than 3 parts by weight of caustic soda for every 4 parts of dimethyl sulphate, and the latter may be mixed with a volatile diluent such as benzene.  Dispersing agents may be added to assist penetration of the cellulose by the reagents.  The methyl cellulose obtained in the first step of the process may contain 4--10 per cent of methoxyl per glucose unit of the cellulose. The second stage of the process is carried out in a pressure vessel such as an autoclave with stirring devices. Aqueous solutions of the cellulose methyl ethers may be used as adhesives, or sizes for paper, cloth, or leather.  They may be used as thickening or emulsifying agents in aqueous coating compositions such as distempers.  In examples, wood cellulose pulp is mixed with caustic soda solution and shredded.  Dimethyl sulphate is added gradually and incorporation continued for some time, the temperature being maintained at 60 DEG C. or at room temperature.  A further amount of caustic soda may then be incorporated.  The mass is then placed in an autoclave and methylated at 80--100 DEG  C. with methyl chloride.  The product is purified by steaming and washing with hot water.  In another example, wood cellulose pulp is mixed with caustic soda solution and shredded. A solution of dimethyl sulphate in benzene containing a dispersing agent known under the Registered Trade Mark "Perminal W" is added gradually.  The mass is transferred to an autoclave and treated with ethyl chloride at 110--120 DEG  C.
Patent GB-745505-A (GB)
Title: Improvements in and relating to the separation of germanium from materials containing it
Inventor: MERRE MARCEL DE
Filed: 1953-12-23
Abstract: In the recovery of germanium sub-oxide or sulphide by volatilization from germanium containing material such as copper-lead ores, the volatilization is effected by heating at 800-1000 DEG C. in a reducing or neutral atmosphere, lignettes, nodules or pastilles of a mixture of the germanium - containing material and carbon, the latter being present in an amount sufficient to avoid fusing at the temperature chosen.  Suitably 5-20 per cent of carbon in the form of lignite, turf, peat or fossil wood is employed.  The reaction may be effected in a vertical retort, suitably lined with carborundum and the formed nodules may be mixed with 10-15 per cent of coke or charcoal of similar size to the nodules, to facilitate gas passage and movement of the charge.  The reducing or neutral gases may be fed at the top or bottom or both, of the furnace and the reaction products are preferably withdrawn laterally at the level of maximum temperature.  Horizontal retorts or rotary furnaces may be used. According to an example an ore concentrate containing Pb, Cu, As, Sb, Zn, Fe, Cd, S, SiO2, GaO and Al2O3 in addition to germanium is ground to 300 mesh (A.S.T.M.) and mixed with 12 per cent of lignite of the same size and the mixture formed into cylinders of 2 cm. diameter and 3 cms. height.  These cylinders are mixed with 12 per cent charcoal and fed to a continuous vertical retort supplied at the top and bottom with a carbon monoxide-containing gas.  A germanium enriched dust is recovered in condensers and refined to obtain germanium dioxide.
Patent GB-927612-A (GB)
Title: High-energy, solid propellant compositions and method for preparing the same
IPC: C06B45/10
Filed: 1959-10-21
Abstract: A high-energy solid propellent composition is formed by curing a mixture of (a) a minor quantity by weight of a fuel binder comprising an acetylenic polyurethane and a cross-linking agent and (b) a major quantity by weight of a solid oxidizer.  The polyurethane may result from the reaction of an acetylenic polyacetal with an organic diisocyanate. Poly(2-butyne-1,4-dioxymethylene), poly(2-butyne-1,4-dioxyethylidene), and poly(2,4-hexadiyne-1,6-dioxymethylene) are suitable polyacetals and may be prepared by condensing an acetylenic glycol with an aldehyde. Organic diisocyanates specified are toluene diisocyanate, dianisidine diisocyanate, hexamethylene-1,6-diisoyanate, 4,41-diisocyanatodiphenylmethane, and 3,31-bitolylene-4,41-diisocyanate.  Suitable cross-linking agents are dihydroxyethylethylenediamine, ethanolamine, hexamethylenediamine, 1,2,6-hexanetriol, 4,41-methylene-bis(2-chloroaniline), triethylamine, trimethylolpropane, tris(hydroxymethyl)-nitromethane, and castor oil.  Oxidizers referred to are ammonium perchlorate, ammonium nitrate, aluminium chlorate and perchlorate, and the chlorates, nitrates, and perchlorates of alkali and alkaline earth metals. The composition may also include an antioxidant, e.g. 2,6-di-tertiary-butylparacresol, a plasticizer, e.g. isodecyl pelargonate or butylcarbitol pelargonate, and a wetting agent, e.g. a polyethylene glycol alkyl aryl ether.  A small amount of ferric acetylacetonate overcomes the inhibiting action of ammonium perchlorate on the cross-linking.  In examples, a small quantity of copper chromite is mixed with the ammonium perchlorate.
Patent GB-434862-A (GB)
Title: Improvements in or relating to track brake magnets
IPC: B61H7/08
Filed: 1934-12-13
Abstract: 434,862. Track brakes. KNORRBREMSE AKT.-GES., 9, Neue Bahnhofstrasse, Lichtenberg, Berlin. Dec. 13, 1934, No. 35846. Convention date, Oct. 22. [Class 103 (i)] A track brake magnet carried by a railway vehicle is provided with a device which guides it out of the gap in the rail situated between the guard rails when braking takes place over a frog. As shown in Fig. 1, the device comprises hard steel plates 4 which extend from the sides of the rail shoes 1 of the brake to its cheeks 2. In a second form, Fig. 3, the end surfaces of the shoes 1 and cheeks 2 are bevelled and covered with hard steel plates 5, 6 which in the event of braking occurring over a frog, cut their way out of the guard rails. Fig. 5 shows a third construction in which a plate having a hard surface 7 is slidably connected between the shoes 1 so that if the brake is wedged in the rail gap the shoes move obliquely upwardly over the surface 7 and then extricate the plate.
Patent GB-319545-A (GB)
Title: Improvements in humidors or means for maintaining tobacco in a moist state
IPC: A24F25/02
Filed: 1928-12-05
Abstract: 319,545. White, A. E., (Rumidor Corporation). Dec. 5, 1928. Internal fittings. - A receptacle, in which tobacco is maintained in a moist condition is fitted with a cover 2 formed at the centre with a cup-shaped member 3, in which is placed a humidifying-element 7, the member 3 having openings 4 communicating with the interior of the receptacle. These openings may be opened or closed by turning an inverted cup member 5 which is also formed with openings 6 and is secured by a bayonet joint at 8. Indicating-means may be provided to show whether the openings are in register or not.
Patent GB-996914-A (GB)
Title: Acrylate polymer compositions
IPC: C08F20/12
Filed: 1961-10-05
Abstract: Acrylic polymer compositions of reduced inflammability are prepared by incorporating in the monomer or monomers from which the said acrylate polymer is derived, before or during polymerization, an acid ester of a phosphorus acid.  The acrylic polymer may be derived from an acrylic acid or a -alkyl acrylic acid derivative.  The phosphorus ester may be a mono- or diester of orthophosphoric acid, phosphorous acid, a monoester of hypophosphoric acid or an acid ester of pyrophosphoric acid.  A free phosphorus acid and/or neutral ester thereof may also be incorporated.  In comparative examples methyl methacrylate is polymerized in the presence of orthophosphoric acid, orthophosphoric acid and trichlorethyl phosphate, primary butyl phosphate, secondary lauryl phosphate and primary methyl phosphate. The products are said to have reduced water sensitivity, and to be suitable for exterior use, e.g. glazing.
Patent GB-1525472-A (GB)
Title: Teaching aid
IPC: G09B23/24
Filed: 1975-09-01
Abstract: 1525472 Educational appliances S S O'RIOR. DAN 1 Sept 1975 [17 Sept 1974] 35940/75 Heading G5G A teaching aid for demonstrating atomic structure comprises a ferromagnetic board, discs each having a chemical symbol thereon and provided with a magnet for attachment to the board, at least one ring having holes therein to be placed around a disc, and pins to be inserted in said holes to indicate electron positions.
Patent GB-1116108-A (GB)
Title: Compacting siliceous pigments
IPC: C09C3/04
Filed: 1966-08-11
Abstract: Siliceous pigments containing at least 50% SiO2 and having a particle size of less than 1 m  are compacted by deaerating, e.g. by passage through a tapering screw or between countercurrently rotating drums, one of which contains a vacuum, until the bulk density increases by at least one pound per cubic foot, and then compacting by mechanical means such as interlocking countercurrently rotating drums with corrugated surfaces.  The pigments may be SiO2 prepared by reacting Na silicate with HCl or Al2(SO4)3, and may contain Ca, Al, Fe, or Na, and preferably have a particle size of 0.005-0.05 m .  The product may be in the form of pellets with a friability of below 25%.
Patent GB-1215290-A (GB)
Title: An improved process for heating hydrogen gas
IPC: F28C3/00
Filed: 1969-07-17
Abstract: 1,215,290. Direct contact heating of gases. REYNOLDS METALS CO. 17 July, 1969 [11 Oct., 1968], No. 35990/69. Heading F4K. In a process in which hydrogen gas is heated by contact with a tubular or planar, refractory carbide wall maintained at a temperature of at least 1500 K. (e.g. 2000 to 5000 K.), the gas is heated in admixture with a hydrocarbon the amount of hydrocarbon added varying from about 0À1% to about 10% by volume of the hydrogen. The process is said to reduce or eliminate degradation of the refractory carbide, e.g. by chemical changes or by depletion of its carbon content. The contacted wall surface may be solid or molten. Examples of suitable refractory carbides and hydrocarbons are given in the Specification.
Patent GB-410438-A (GB)
Title: Improvements in or relating to milk boiling vessels provided with means for preventing boiling over
IPC: A47J27/56
Filed: 1933-12-21
Abstract: 410,438. Milk-boiling vessels. BUUREN, T. VAN, 9, Hoogeweg, Amsterdam. Dec. 21, 1933, No. 36049. Convention date, April 10. Addition to 391,301. [Class 66.] The milk-boiling vessel described in the parent Specification which comprises an upwardly inclined spout or channel member 2 in which the rising milk is cooled and down which it flows back into the vessel, is now provided with a loose plate 4 arranged in an inclined position so that it divides the vessel into two parts, the bottom of the vessel forming part of that compartment which is located at the greater distance from the channel member, and with several supporting members 5, which prevent tipping over of the plate in the direction of the channel member.
Patent GB-1379217-A (GB)
Title: Device for loading gas-conveyed particulate solids into a void partially filled with liquid
IPC: F42D1/00
Filed: 1973-07-31
Abstract: 1379217 Spray producers ICI AUSTRALIA Ltd 31 July 1973 [17 Aug 1972]] 36290/73 Heading B2F [Also in Division E1] For loading gas-conveyed, particulate solid, e.g. explosives, into a void, e.g. a borehole, partially filled with liquid in a manner that prevents contact of the solids by the liquid, there is provided a device comprising a perforated mantle 2 secured co-axially about the discharge end of a tube 1, the mantle being of a size and configuration as to form a seal with the sides of the void during use of the device in the filling of the void and the perforations 5 being of a size small enough to cause the solids-conveying gas to form small bubbles as it leaves the device and yet be large enough to allow of the passage therethrough of fines of the solid material. In an alternative embodiment the mantle has an upper cylindrical gauze section secured at its upper end to the tube and a truncated skirt secured to the lower end of the gauze cylinder. The mesh range of the gauze is from 300-3000 mesh per sq. in. and is preferably in the range from 400-700 mesh per sq. in. The tube may be constricted at its discharge end to cause an increase in the terminal velocity of solids as they pass through the tube.
Patent GB-902916-A (GB)
Title: Improvements in gas making apparatus
IPC: C10J3/08
Filed: 1959-10-27
Abstract: 902,916. Slag tap furnaces; gas producers. FALLON, J. Oct. 24, 1960 [Oct.27, 1959], No. 36319/59. Classes 51 (1) and 55 (1). In a water gas producer comprising a shaft furnace with a gas-off-take b at the top, a coking chamber above a reaction chamber, tuyeres a<SP>2</SP> for horizontal air blast supply to the reaction chamber during blow periods and tuyeres a<SP>4</SP> for steam supply during make periods, molten slag is withdrawn from the base of the furnace through a vertical passage g<SP>1</SP>, the slag forming an hydraulic seal between the passage g<SP>1</SP> and the reaction chamber. The passage g<SP>1</SP> extends through a saucer-shaped member g forming a slag reservoir, and a dome g<SP>2</SP> with notches g<SP>3</SP> at its edge covers the top of the passage g<SP>1</SP> to form a seal with the slag in the reservoir g. Shaped passages g<SP>5</SP> through the lower part of the wall of passage g<SP>1</SP> prevent molten iron blocking the free flow of slag to the outlet. The passage g<SP>1</SP> delivers to a chamber g<SP>4</SP> below the furnace which is heated by an independent burner i. Air supply tuyeres h below the reaction zone maintain a hot bed of coke at the base of the shaft and prevent the slag solidifying. The steam for the make periods is heated in a regenerator c through which the waste gases pass during the blow periods, the hot gases from the regenerator being used to preheat the air blast.
Patent GB-979127-A (GB)
Title: Improvements in and relating to control devices in machine tools
IPC: G05B19/16
Filed: 1963-09-16
Abstract: 979,127. Control of motors. ARENCO ELECTRONICS A.B. Sept. 16, 1963 [Sept. 28, 1962], No. 36385/63. Heading H2J. [Also in Division.G3]  A motor driving a lead-screw for a co-ordinate table, under the control of a programmed control system (see Division G3), is arranged to automatically run for a short period in reverse after being braked to a standstill in order to correct for overshoot due to the inertia of the motor and co-ordinate table. As shown, the motor 6 is braked by a relay 16 opening a switch ab, to isolate a forward movement field winding 15, and closing a switch ef to apply the output of a tachogenerator 14 to an integrating device 19. When the integrated output of device 19 is a maximum the motor 6 is stopped. The device 19 then energizes a relay 18 to close a switch cd to energize a reverse movement field winding 17. The output of the tachogenerator causes the output of the integrating device 19 to slowly fall to zero at which the relay 18 is de-energized to open switch cd to stop the motor at the desired position.
Patent GB-1441921-A (GB)
Title: Machine for reeling and unreeling wire
IPC: E01D19/16
Filed: 1972-08-04
Abstract: 1441921 Reeling and unreeling wire CLEVELAND BRIDGE & ENG CO Ltd 24 July 1973 [4 Aug 1972] 36617/72 Heading B8M A machine for reeling and unreeling wire, particularly for use in suspension bridge construction, comprises a frame 1 including a non- rotatable shaft 3, two permanently mounted reels 4, 5 for reeling and unreeling said wire, each reel being mounted on the shaft 3 for rotation in each direction, and variable speed drive means, e.g. pneumatic motors 9, 10 positively connected to each reel for driving each reel in either direction independent of each other. The motors 9, 10 may be connected to a common compressor and air reservoir. The frame 1 also includes wire traversing means 7, 8 driven from motors 9, 10 via chains and sprockets. The motors 9, 10 preferably also include automatic braking systems for stopping rotation of the reels, e.g. actuated when the air supply ceases.
Patent GB-986953-A (GB)
Title: An apparatus for removing, loosening, and mixing leaf-like or fibrous material, such as tobacco
Inventor: RABE ERHARD
IPC: A24B3/06
Filed: 1963-09-17
Abstract: 986,953. Mixing tobacco. TABAKUND INDUSTRIEMASCHINEN DRESDEN VEB. Sept. 17, 1963, No. 36633/63. Heading B1C. In apparatus for mixing fibrous material such as tobacco the material is placed in layers 3 in a trough having a bottom formed as an endless belt conveyer 2 by which the mass is urged into contact with rotating rakes 4 arranged in counter-rotating pairs ; the rakes may be vertical or inclined towards the trough. There may be additional counter-rotating pairs of rakes placed behind the gaps between the first pairs to loosen any lumps (see Fig. 3, not shown). The mixture is discharged on to a belt conveyer 6.
Patent GB-169947-A (GB)
Title: Improvements in or relating to prosceniums for theatres or the like
IPC: A63J1/00
Filed: 1920-12-31
Abstract: 169,947. AndrÚ, H. Oct. 2, 1920, [Convention date]. Theatrical appliances.-The proscenium opening of a theatre is made adjustable in size by arranging the sides 11 to slide inwards, as indicated by the arrow h, and the top 4 to drop, to the position shown by broken lines. Footlights are arranged in a box-like structure 17.