baber/WOPTO huggingface dataset:
Patent GB-911936-A (GB)
Title: Improvements in the purification of hydrogen peroxide
IPC: C01B15/023
Filed: 1961-03-08
Abstract: Hydrogen peroxide obtained from the anthraquinone process is purified by extraction with water, separating the aqueous solution from entrained working solution in a primary extraction zone using a quinone solvent, digesting at 150 DEG -50 DEG C. for 1-10 hours, preferably in the presence of a stabilizer, e.g. sodium stannate or dipicolinic acid, to increase the colour, extracting any further anthraquinone in a secondary extraction zone with a quinone solvent, evaporating hydrogen peroxide, water, and impurities having boiling points lower than hydrogen peroxide to remove from high boiling coloured constituents and condensing the hydrogen peroxide.  Working solution enters <PICT:0911936/III/1> tower 10 through inlet 12 and water through inlet 16.  Aqueous hydrogen peroxide enters primary extraction tower 22 via conduits 18 and 20, while anthraquinone goes back to the producing process in conduit 14.  A quinone solvent enters towers 22 and 40 via conduits 30, 26, 28 and may be toluene, alkylated naphthalene, mixtures of alkylated naphthalenes with paraffin, dichlorbenzene, trichlorbenzene, trichlormethane, tetrachlormethane, dichlormethane, trichlorethane.  Hydrogen peroxide passes through packed towers 22 and 40 in series in conduits 24 and 34, while the quinone solvent plus dissolved impurities leave via conduits 32, 36, 38.  The hydrogen peroxide enters the digestion zone consisting of towers 50, 58, 66 via conduits 42 and 44 and a stabilizer is added from container 46.  The digestion towers are heated by coils 54, 62, 70, preferably at 100 DEG -80 DEG C. for 1-2 hours, e.g. 90 DEG C.  The solution is then led to the secondary extraction zone consisting of packed towers 74, 88.  A quinone solvent enters through conduits 78, 80, 82 and leaves through conduits 84, 90, 92.  Hydrogen peroxide leaves tower 88 through conduit 94 to heater 96.  Hydrogen peroxide, water, and other volatiles are vapourized and pass into separating zone 100. Entrained non-volatiles pass back through conduit 104 and are discharged with other non-volatiles through outlet 106.  The volatile compounds then pass to fractionator 108, aqueous hydrogen peroxide removed via conduit 118 to heater 120.  A stabilizer is added from container 122 and very pure hydrogen peroxide removed through outlet 126.  Some water and other volatiles are removed through conduit 110 to cooler 112 and then through outlet 116. Specifications 465,070, 719,523 and U.S.A.  Specifications 2,215,883 and 2,768,065 are referred to.
Patent GB-996715-A (GB)
Title: Improvements in or relating to space heaters
Inventor: KRAUSZ ALLAN ELMER
IPC: F24C3/04
Filed: 1964-02-28
Abstract: 996,715. Incandescent gas fires. LEAR SIEGLER Inc. Feb. 28, 1964, No. 8504/64. Heading F4W. A space heater comprises a casing 17, Fig. 1, enclosing a combustion chamber 15, Fig. 3, an elongated burner 25 operable to provide a flame over substantially the entire length of its upper surface 27, an elongated metallic wire 31 disposed above and parallel to the burner so as to be enveloped by the burner flame, and a translucent panel 19 provided in the forward wall 39 of the casing 17 so that some gases from the burner pass between the wire 31 and said panel to produce a visual impression of warmth when the light emitted from the wire 31 is viewed through the translucent panel 19. A housing 23 surrounds the casing 17 and is provided with an aperture 55 registering with the translucent panel. The wire 31, which has greater length than the burner 25, has one end secured to a lug 33 on one side wall of the casing 17 whilst the other end extends through a hole 38 in the other side wall and is attached to a lug 35 on the housing 23 through a spring 36. The translucent panel 19 comprises a number of plates 43 having plane rearward surfaces 45 and forward surfaces 47 provided with projections 49 in the form of a hexagonal pyramids. The casing 17 may be of iron or aluminium and the wire 31 may be of a nickelchromium alloy.
Patent GB-1213673-A (GB)
Title: Electromagnetic device
Inventor: KUNZEK DIETER
IPC: H02K33/16
Filed: 1968-02-21
Abstract: 1,213,673. Bells. FERNMELDEWERK NORDHAUSEN VEB. 21 Feb., 1698, No. 8514/68. Heading G5J. [Also in Division H2] A two-pole A.C. electromagnet system, particularly for an alarm, has a pair of permanent magnets 4, 5 mounted between the ends of the yoke arms 12, 13 respectively and a supporting bar 6 for the central pivot 7 of an armature 1 whereby in the symmetrical position of the armature shown, the flux circulates round the short path provided by the armature and its support. When forming part of an alarm, the armature carries the striker (18) thereof.
Patent GB-462783-A (GB)
Title: Method of manufacturing a permeable imitation leather
IPC: D04H1/74
Filed: 1936-03-23
Abstract: Permeable artificial leather is produced by wetting a sheet of carded fibre on a smooth surface with a naturally or artificially produced aqueous rubber dispersion containing a finely-divided alkaline earth metal carbonate, passing the sheet through acid which coagulates the rubber and simultaneously liberates carbon dioxide from the carbonate to form pores, and vulcanizing the coagulated rubber.  A carded sheet of cotton, hemp, or tussore silk is laid on a chromium plated surface, an aluminium plate having an oxidized or stainless steel surface, or a stainless steel plate, and sprinkled with a composition containing latex, magnesium carbonate, soap, sulphur, and a vulcanizing accelerator, e.g. ethyl-aniline phenyl biguanide.  The wet sheet is passed through an organic acid, e.g. acetic or formic, and vulcanized by heat.  Alternatively, a thin sheet cut from a block of superimposed carded webs at right angles to the fibres is wetted on a smooth surface with a rubber dispersion made by mixing a benzol rubber solution containing calcium carbonate, sulphur, and an accelerator with a mixture of soap, ammonium carbonate, water, and an emulsifying agent such as a sulphate of a higher alcohol or sulphonated naphthalene.  The wetted sheet is drained, placed in a supporting frame, passed through acid, and vulcanized by passage over a heated chromium plated or stainless metal roll.
Patent GB-741433-A (GB)
Title: Improvements relating to gas turbine engine fuel systems
Inventor: JUBB ALBERT
IPC: F02C7/224
Filed: 1953-03-27
Abstract: 741,433. Supplying liquid fuel to burners. ROLLS-ROYCE, Ltd. March 26, 1954 [March 27, 1953], No. 8605/53. Class 75(1). [Also in Group XXVI] In a gas turbine fuel system in which fuel from a tank is supplied by a booster pump to a main fuel pump through a heat exchanger where it is heated by compressed air bled from the gas turbine engine, the quantity of fuel supplied by the booster pump is in excess of engine requirements and the excess is returned to the tank after it has passed through the heat exchanger.. Fuel from a tank 14 is supplied by a booster pump 15 to the main engine driven fuel pump 16 through a heat-exchanger 21 where the fuel is heated by air bled from the discharge 24 of the gas turbine air compressor 10 through a pipeline 23 and control valve 25A. The quantity of fuel supplied by the booster pump is in excess of engine requirements and the excess is returned to the fuel tank through a pipeline 25. The flow through the pipeline 25 may be controlled by the resistance of the pipeline to a fixed or variable orifice 26 may be used. In a modification, the booster pump is driven by a turbine supplied with air from the outlet of the heat exchanger. In this arrangement an air bypass around the 'heat exchanger may be provided together with a control valve controlling the flow of air through the by-pass.
Patent GB-726109-A (GB)
Title: Gear pump
Inventor: LEVERINGTON VICTOR
IPC: F04C15/00
Filed: 1953-03-30
Abstract: 726,109. Rotary pumps. LONGMATE, Ltd., E. C. March 30, 1953, No. 8658/53. Class 110(2). A gear pump comprises a central chamber housing the gear mechanism and end chambers which carry the sealing means C for the shafts and in which the shafts are journalled. Plates A are disposed between the chambers and are coated with an acid-resistant material. The shafts are reduced in diameter externally of the central chamber and the shaft sealing means are adapted to be urged against the shoulders of the shafts and the plates A.
Patent GB-447158-A (GB)
Title: An attachment for baths to support a headrest
IPC: A47K3/12
Filed: 1935-03-20
Abstract: 447,158. Baths. WRIGHT, C. M., 12, York Buildings, Adelphi, London. March 20, 1935, No. 8743. [Class 26] A device to permit the rise of a head-rest such as that described in Specific ation 425,184 in a bath o! the " built-in " type, com prises two members A held by a tensioning-de vice M in contact with the bath sides, each member comprising a portion B resting on top of the bath edge and a bar D 'for receiving the hooks or loops of the rest. The bar D has stops E and may have squared portions and each member A may be thickened or splayed at F. Rubber stops G are provided where shown. The tensioning device comprises a hollow rod receiving oppositelythreaded members J and having a rubber grip, a squared portion, or apertures to receive a turning-bar.
Patent GB-999339-A (GB)
Title: Improvements in or relating to doors
Inventor: HALLET FRANK EDWARD JOHN
IPC: E05D15/44
Filed: 1963-03-06
Abstract: 999,339. Counterbalanced doors. WESTLAND ENGINEERS Ltd. Feb. 13, 1964 [March 6, 1963], No. 8853/63. Heading E2M. A tension spring counterbalance system for an "up-and-over" door incorporates a pulley system for reducing movement of the spring, the spring system being assembled above and parallel to the lintel of the door opening and connected by a cable to the door via the pulley system. In one embodiment, Figs. 1, 2, the door is counterbalanced by means of two tension springs 15, 12, each anchored at one end 14 and at the other connected to a spring pulley 11. Two flexible cables, one for each spring, are each secured at 13 and pass over one spring pulley 11 and over one guide pulley 8, the other end being secured to one stub axle 2 of the door. In operation when the door is closed the tension springs 12, 15 are extended but as the door 1 is opened the springs 12, 15 contract and the stub axles 2 rise in the vertical tracks 3 causing the door, with the aid of the radius arm 5, to tilt about an axis through the stub axles. The movement of the free ends of the spring during the opening and closing motion is reduced in comparison to the cable 9 in the ratio of 1:2, by incorporating the spring pulley 11 in the system. In a further embodiment, Fig. 3 (not shown), the counterbalance system may have one spring 23 and one continuous flexible cable 9 passing over two movable pulleys 11a, 11b connected to the spring, two fixed guide pulleys and a compensating pulley 25, the ends of the cord being each secured to one stub axle 2.
Patent GB-127940-A (GB)
Title: Improvements relating to the Preparation of Fuel in Briquetted Form for Utilisation in Carbonisation, Gasification, and the like.
Inventor: DAVIES WILLIAM EVERARD
IPC: C10L5/14
Filed: 1918-05-31
Abstract: 127,940. Davies, W. E. May 31,1918. Composition fuel.-Coal, preferably containing from 10 to 40 per cent of volatile matter, is mixed with a resinous binder and moulded under known conditions into briquettes, which are perforated, bored, or otherwise formed to increase the area of their free surfaces. The amount of binder to be added is not greater than 10 per cent of the weight of the coal, and varies with the nature of the coal; some coals contain bituminous matter which serves as a resinous binder, and this, together with the added binder, which may be a true resin or bituminous matter similar to that in the coal, should amount to 6 to 18 per. cent of the weight of the coal. The Provisional Specification states also that shale, peat, or the like are formed into briquettes, and a small percentage of lime may be added.
Patent GB-186082-A (GB)
Title: Improvements in the construction of steam and gas turbines
Inventor: TESLA NIKOLA
Filed: 1921-03-24
Abstract: 186,082. Tesla, N. March 24, 1921. Operated by fluid friction.-In a turbine of the type described in Specification 24001/10, the rotor is made up of a number of parallel discs 2 perforated at 3 to provide exhaust passages, spaced apart by star-shaped plates 4 or circular washers not extending beyond the perforations 3, and clamped between stout end discs 1. The discs 2 are held separate at their outer portions by spacing pins 6 or by projections pressed out on one side of each plate.
Patent GB-570588-A (GB)
Title: Improvements in or relating to the treatment of yarns, foils and similar materials made of organic derivatives of cellulose
IPC: D01F2/28
Filed: 1943-07-07
Abstract: <PICT:0570588/IV/1> Artificial yarns, foils and like materials of an organic derivative of cellulose, e.g. cellulose acetate, acetate-propionate, acetate-butyrate and ethyl cellulose, are stretched during their passage through wet steam or hot water under pressure, by passing them over a positively driven feed device into an end chamber containing water under pressure, and at a temperature at which it is inert to the cellulose derivative, then directly into a stretching chamber containing steam or hot water under pressure and over a second positively-driven feed device which withdraws the materials from the chamber at a greater rate than that at which they enter the end chamber.  The pressure of the water in the end chamber is higher than that of the wet steam or hot water in the stretching chamber.  Yarn is fed by nip-rollers 2 through the orifice 3 to the end chamber 5 containing water under pressure.  It then is passed through orifice 7 into the stretching chamber 6 containing wet steam or hot water under pressure.  It leaves the chamber through outlet orifice 11 and is collected on conical roller 15 from which it passes to a take-up device (not shown).  Any change in degree of stretch is effected by traversing the yarn along the roller 15.  Chamber 6 is provided with baffles 9 and 10.  The cross-sectional area and length of the inlet orifice 3 are preferably smaller than those of the intermediate orifice 7, and the dimensions of the outlet orifice 11 may vary from slightly more than those of the inlet orifice to several times those of the intermediate orifice.  In order to treat several ends of yarn simultaneously, a plurality of orifices may be employed.  The temperature of the end chamber water may be as high as 70 DEG  C., and the wet steam temperature is preferably higher than 105 DEG  C. The apparatus may also be employed in other treatments of yarns, foils and the like.  Thus, it may be used in a saponification process effected with the vapour of ammonia or a volatile organic base, or with a solution of sodium hydroxide or other base; or it may be used in a shrinking process employing methylene dichloride as the treating fluid.  The end chamber liquid in the latter process may be an organic liquid such as benzene.  In the Provisional Specification it is stated that the process is also applicable to yarns or foils of other thermoplastic materials, e.g. an interpolymer of polyvinyl chloridepolyvinyl acetate. Specifications 443,707, 443,773, 537,962, 558,958 and 569,669 are referred to.
Patent GB-1006922-A (GB)
Title: Improvements relating to yarn heating
IPC: D02J13/00
Filed: 1964-03-05
Abstract: 1,006,922. Finishing yarns. MOULINAGE ET RETORDERIE DE CHAVONOZ. March 5, 1964 [March 5,1963], No. 9380/64. Heading D1F. A travelling yarn is heated e.g. to set temporary twist therein during a false-twist crimping process, by passage through a tube 1 which is insulated by a casing 2 housing an electric heater element 3 and is connected (at its "upstream" end) to a chamber 4 for the admission of compressed air. A suction chamber 6, wherein fumes are extracted and the condensate is available for recovery or discharge, houses a fan (not shown) which inhales atmospheric air, together with fumes leaving the heater, through an orifice 7 and delivers it through an outlet 10. A calibrated, manually or electromagnetically-operated valve 8 in the discharge orifice (or in chamber 4) permits escape of excess air and regulates the flow of purified air (through duct 9) to the chamber. A single chamber may supply air to two or more heaters to which yarns pass separately through a corresponding number of origices, as at 5.
Patent GB-743673-A (GB)
Title: Improvements in or relating to poppet-valve operating mechanism
IPC: F01L1/18
Filed: 1953-04-08
Abstract: 743,673. Valve. gear. ALBION MOTORS, Ltd., and LEE, G. H. April 1, 1954 [April 8,1953], No. 9496/53. Class 7(6) An eccentric bush 3, interposed between a valve rocker 1 and the rocker shaft 5, is urged to rotate by a spring 8 in a direction which moves the rocker to take up any clearance in the valve gear and one of the co-operating cylindrical surfaces of the rocker 1, eccentric 3 or shaft 5 is relieved over a portion extending over less than half its circumference. In Fig. 2 the rocker bore is relieved at B so that when the rocker is rotated by a push rod the relieved part causes the rocker to bind on the eccentric 3 and cause rotation thereof through the remainder of the valve opening period. In Fig. 1 the eccentric 3 of an inlet valve 1 is provided with a projection 6 co-i operating with a slot in a projection 7 of an eccentric 4 on which an adjacent exhaust valve rocker 2 is mounted. When the eccentric 3 is rotated during opening of the inlet valve by the rocker 1, the projection 6 causes rotation of the eccentric 4 against its loading spring 9 to produce clearance in the exhaust valve gear, the clearance being eliminated when the inlet valve is closed by rotation of the eccentric 4 in the opposite direction by the spring 9. Similarly, opening of the exhaust valve by the rocker 2 produces through the projections 7, 6, clearance in the inlet valve gear, which clearance is eliminated by rotation of the eccentric 3 by the spring 8. In a modification the rotation of the eccentrics is derived from a cam. The Provisional Specification describes a clearance adjusting mechanism comprising a wedge member interposed between a cam and a tappet, the wedge being withdrawn when the valve is closed to introduce clearance which clearance is subsequently taken up when the wedge is replaced.
Patent GB-195273-A (GB)
Title: Improvements in telephone repeater systems
IPC: H04B3/30
Filed: 1922-04-03
Abstract: 195,273. Western Electric Co., Ltd., (Western. Electric Co., Inc.). April 3, 1922. Repeating and amplifying systems.-In a telephone repeater system in which each line 11, 13 is balanced by a corresponding network 22, 22<1>, the single repeating element 19 has both its input and output circuits connected to both lines. Both input circuits 17, 17<1> are connected across the mid-points of balanced transformers 15, 15<1>, and both output circuits 21, 21<1> are connected inductively to the respective lines 11, 13 by the transformer coils 16, 16<1>. The common portion of the output circuits includes a wave filter 20, by which the amplified currents are restricted to the useful frequency range. The lines 11, 13 may have different characteristic impedances, the lines 11 being shown as a loaded line, and the line 13 as unloaded.
Patent GB-1042762-A (GB)
Title: Flame-proof multilayer sandwich panel
IPC: B31D3/02
Filed: 1963-03-11
Abstract: In a "sandwich" panel comprising outer layers of plastics, wood or metal and a core of tubular cells of impregnated or unimpregnated paper, the core is treated with a foam-forming flame proofing agent. Suitable agents comprise a binder, flame-proofing salt, a resin-forming substance producing a foaming layer and if desired a pigment and a filler; a composition given as an example comprises a polyvinyl acetate aqueous dispersion containing 10% of trichlorethyl phosphate, monoammonium phosphate, dicyandiamide and pentaerythritol which react to form a resin, starch, TiO2, water and ethylene glycol mono ethyl ether.
Patent GB-199180-A (GB)
Title: Improvements in and relating to methods of manufacturing turbine elements
IPC: B23P15/00
Filed: 1922-04-04
Abstract: 199,180. British Thomson - Houston Co., Ltd., (General Electric Co.). April 4, 1922. Blades and spacing blocks are tightly assembled in a groove in a member which is subsequently mounted on the rotor and the edges of thte groove are turned over the spacing blocks. The blades 14, Fig. 3, are formed with tenons 16 to enter holes in the shrouding strtips and have projections 14<a> formed with a suitable tool and adapted to bite into the edges of adjacent spacing members 15, Fig. 4, when these are hammered tightly into place in a groove. 11 in a member 10 adapted subsequently to be finished to a T-section and secured to a rotor as shown in Fig. 9. The edges 13, Fig. 2, of the groove 11 are turned over the spacing blocks and the whole united by fusion of metal preferably by the method described in Specification 158,565 or by any other method. A shrouding strip 32, Fig. 9, is mounted by turning over the tenons on the blades or by welding shorter tenons in the holes in the shrouding strip. The grooved member 10, Fig. 2, and the assembled blades may be in segmental form or in complete ring form for attachment to a rotor.
Patent GB-951768-A (GB)
Title: Producing films having mat surfaces
IPC: B29D7/00
Filed: 1960-03-18
Abstract: 951,768. Mat surface films and filaments. MINNESOTA MINING & MANUFACTURING CO. March 18. 1960 [March 19, 1959], No. 9735/60. Drawings to Specification. Heading B5B. Films and filaments having a mat surface are produced by forming into a film or a filament a synthetic organic thermoplastic transparent high polymer having dispersed in it 1-25% by weight, based on the polymer, of a solid which is insoluble in the polymer at the temperature at which it is formed and which has a particle size range of 0.3 to 20 microns, and the filament is stretched or the film is stretched longitudinally or in both the longitudinal and transverse directions to the extent required to impart to the filament or film a mat surface. The filament or film may be heated as its is stretched. The dispersed material may be transparent and may have a refractive index of the same order of magnitude as that of the polymer. The polymer may be polyethylene terephthalate, polycaprolactam, polypropylene or polyvinyl chloride. The dispsrsed material may be calcium carbonate, mica, silica, calcium silicate, glass, clay or titanium dioxide. The dispersed material and the polymer may be such that the dispersed particles remain .unbonded to the polymer matrix or may be such that if a bond is formed between them, it is rupturable by uniaxially or biaxially stretching the film or filament to 2.5 or more times its initial dimension and the filament or film may be further stretched to form voids around the particles which render the filament or film opaque. The mat surface films of the invention are pencil or ink receptive. If the dispersed material in a film which has been rendered opaque by stretching is transparent, the film may be rendered locally transparent by the subjecting it to pressure as by writing on the film with a stylus.