baber/WOPTO huggingface dataset:
Patent GB-596885-A (GB)
Title: Improvements in twisting of strands to form a ply construction
IPC: D01H1/00
Filed: 1945-08-03
Abstract: 596,885. Twisting yarns &c. UNITED STATES RUBBER CO. Aug. 3, 1945, No. 19995. Convention date, Sept. 7, 1944. [Class 120 (ii) ] [Also in Group XXV] Yarns &c. are twisted together by a method comprising advancing them in spaced relationship to each other and to a central axis, rotating them about said axis to twist them together, and deflecting a portion of each yarn inwardly towards the axis in the vicinity of the point where they are twisted together, so as to form floatingly connected sliding loops pulling in contrary directions with the depth of each loop inversely proportional to the relative tension of the yarns whereby their tensions are equalised. Mechanism described, for carrying out the method is substantially as set forth in-Specification 572,026, to which reference is made, the tension equaliser- 36, 44 of that Specification being replaced by an adjustable housing 37 having holes 39 therein which are aligned with holes 36 in the end of the spindle 21 for the passage of the yarns, the loops of the yarns 12, 13 moving, say, to 41<1> when the tension in yarn 12 increases and to, say, 41" when the tension in yarn 13 increases. In a modification, the yarns 12, 13, instead of looping about,each other, are passed through a small guide ring floatingly supported in the housing 37.
Patent GB-1512116-A (GB)
Title: Method for transmitting binary signals by means of self-synchronizing digital data scramblers
IPC: H04L25/48
Filed: 1976-05-14
Abstract: 1512116 Data transmission; synchronizing by bit inversion DE STAAT DER NEDERLANDEN TE DEZEN VERTEGENWOORDIGD DOOR DE DIRECTEUR - GENERAAL DER POSTERIJEN TELEGRAFIE EN TELEFONIE 14 May 1976 [14 May 1975] 20000/76 Heading H4P In a known arrangement whereby to aid receiver clock extraction a long series of transmitted 1's or 0's is avoided by use of a scrambler, to prevent degeneration (i.e. fortuitously, long series of 0's or 1's being transmitted) such condition is detected over a defined number of consecutive clock periods and the degeneration is terminated by inverting one bit of the input signal. The modification at the transmitter comprises components 13-16 of which exclusive OR 13 receives input signals V also the inverted output T or OR gate 16, which in conjunction with another exclusive OR 14 (connected across the input of exclusive OR 6 receiving feedback from output Al) provides a logical sum M=V+T+Z and when M = 0 and WXYZ = 0001 or 0000, inputs to AND gate 15 = 0 hence N = 0 which is clocked through a 4 stage shift register 17. Four 0 inputs to OR 16 give a 0 output which is inverted to give T = 1 hence if next input V = 0 it would be inverted to end the degenerative condition. When PQRS = 0000, register 17 is put into a parallel condition by an input U and in consequence PQRS will become 0001 at next clock period hence inversion of V will only take place for 1 bit period. At the receiver, the modificaion comprises components 18-27. Received words STUV = 1111 or 0000 indicate degenerative condition over 4 clock periods which are compared with the next input signal in exclusive OR's 19-22 and if all 1's or 0's, AND 24 gives a I which is inverted. Over 4 clock periods register 26 will store all 0's hence inverted output of OR 25 = 1 which causes inversion of C2 in exclusive OR 18. As signal C2 can exhibit several transitions per bit period it is sampled at a determined instant by element 27.
Patent GB-517617-A (GB)
Title: Improvements in gas turbine plants and means for their regulation
Filed: 1938-07-07
Abstract: 517,617. Gas turbines TALALMANYKIFEJLESZTO ES ERTEKESITO K. F. T. July 7, 1938, No. 20131. Convention date, July 7, 1937. [Classes 110 (i) and 110 (iii)] In order to regulate, when the load varies, the inlet temperature of the working fluid supply to a gas turbine plant, the quantity of air delivered to the combustion chamber is varied by adjustment of the angularity of the compressor blades with variation of the fuel supply. In the arrangement shown, if the load on the turbine 1 increases, the governor 4 by means of linkwork 11, 12, 13 deflects the compressor blades to increase the air supply thus lowering the temperature at the inlet of the turbine; the thermostat 21 then increases the fuel supply to the combustion chamber 18 until the proper initial temperature is again reached. In a modification the governor 4 controls the fuel supply to the combustion chamber 18 and the thermostat 21 adjusts the compressor blades accordingly. Several thermostats at different places in the turbine may be used and servomotors may be provided in either or both regulations. The angular adjustment of the compressor blades may be limited in the first instance to the low pressure stage. The regulation may affect only the angle of attack of the compressor blades. Specifications 511,645 and 516,438 are referred to.
Patent GB-352725-A (GB)
Title: Improved manufacture of tri-ammonium phosphate
IPC: C01B25/40
Filed: 1930-07-04
Abstract: In obtaining triammonium phosphate by absorption of ammonia in phosphoric acid in two stages, so that in the first stage the first valency is completely saturated, and the second valency partially saturated, and in the second stage, complete neutralization is effected, an absorption tower is used in the first stage, the acid being contained in a lead container.  A well cooled mixing apparatus of iron or steel is then used in the second stage, wherein the solution of mono- and diammonium phosphate is treated with excess of gaseous ammonia.  The salt is obtained in a dry crystalline state by suitably regulating the amount of water in the reactants; thus, using dry ammonia, phosphoric acid solution containing 38 per cent P2O5 must be employed.
Patent GB-669868-A (GB)
Title: Improved method of and apparatus for fractional crystallization
IPC: B01D9/00
Filed: 1949-08-05
Abstract: <PICT:0669868/III/1> A mixture of materials which can be melted or otherwise liquefied and which comprises a component which can be crystallized therefrom and which can be melted, is fractionally crystallized by bringing the mixture to a temperature at which it is a slurry, lifting crystalline material from the slurry through a zone which increases in temperature upwards to cause partial melting of the crystalline material with resultant downflow of the melt and recrystallization of the material above the slurry, and gradually elevating the material undergoing recrystallization through the zone and delivering recrystallized material at the top of the zone.  As described, a mixture which is either a liquid or a slurry is continuously fed from a tank 3 to an intermediate point or to the base of a column 1 containing a pair of rotatable intermeshing elevating screws 18, 19.  Heating or cooling coils 16, 17 or alternative heat control means are provided to bring different parts of the apparatus to such temperatures that a slurry will run in the lower part and solid material elevated from the slurry will be partially melted as it is raised.  The elevator screws fit the column loosely and the solid material spills off the edges of the screws, increasing the effective length of the column.  In addition to the screws rotating on their own axes the system of screws may rotate as a whole.  Solid material emerging at the top spills into a vessel 6 where it is melted by a heater 13 and run off to a vessel 12, if desired, through a heater or cooler 10.  Part of the melted material may be returned to the top of the column as extra reflux.  Residue from the base of the column is collected in vessel 5.  The apparatus may also be used for batch operations.  Solvents or immiscible liquid diluents may, if desired, be added to the initial mixture.  In some instances the top product may be a double or multiple compound.  In examples, the separation of (1) benzene from a liquid C6 cracked-oil fraction; (2) benzene from a mixture of benzene and toluene; (3) benzene from trace impurities; (4) and (5) cyclohexane from a mixture thereof with other hydrocarbons; (6) para-xylene from a xylene mixture; (7) and (8) styrene from a mixture thereof with other hydrocarbons; (9) para-dichlorobenzene from a mixture of isomers; (10) ethylene bromide from a mixture thereof with ethylene chloride; (11) water from a mixture of water and ethylene glycol; (12) calcium chloride hexahydrate from a mixture thereof with other mineral chlorides, is described.  The separation of magnesium chloride hydrate from a solution of magnesium and calcium chlorides is also referred to.  The Specification as open to inspection under Sect. 91, also refers to the separation of salts of rare earth metals from solutions of the salts.  This subject-matter does not appear in the Specification as accepted.
Patent GB-586134-A (GB)
Title: Improvements in or relating to electron discharge devices employing hollow resonators
IPC: H01J25/74
Filed: 1943-12-07
Abstract: 586,134. Velocity-modulated tubes. MAYO, B. J., and BARFORD, N. C. Dec. 7, 1943, No. 20476. [Class 39 (i)] In electron oscillation generators using a single hollow resonator as described in Specification 528,041, the resonator comprises a cylindrical outer conductor 3 and a concentric inner conductor 4 ; the electron beam is generated by an annular cathode 6 opposite a grid 5, or an annular series of apertures, and passes radially through the resonator to the conductor 4. Alternatively, the cathode may be centrally disposed inside a mesh electrode and the electrode 6' may be the collecting electrode. Leakage of high-frequency energy may be minimized by sleeves 7, 8, an odd number of quarter-wavelengths long surrounding the central conductor, or by the means described in Specification 562,674. Tuning means may be provided, for example, an adjustable piston, and energy may be extracted by a concentric line or wave-guide. Reference has been directed by the Comptroller to Specification 516,750.
Patent GB-434451-A (GB)
Title: Improvements in and relating to dynamo electric machines
IPC: H02K17/14
Filed: 1934-07-12
Abstract: 434,451. Controlling induction machines. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. July 12, 1934, No. 20483. Convention date, July 12, 1933. [Class 35] An induction motor is given an increased pole number by energizing it with single phase current supplied at terminals different from those used when the machine operates with three phase current. In the form shown in Fig. 4, the machine operates with four poles when a three phase supply is connected to the delta points and with six poles when single phase current is supplied at the terminals indicated, the phase winding halves then being all in parallel. In a modified form, the phase winding halves are all in series, half of them being reversed for six poles or connected all in the same sense for twelve poles. In the form shown in Fig. 5, three phase connection to the star points gives four poles while single phase current at the points indicated yields six. Other pole numbers may be obtained by using known pole-change methods in addition.
Patent GB-148840-A (GB)
Title: Improvements in signs
IPC: G09F11/29
Filed: 1920-07-10
Abstract: 148,840. Carpquist Signs, Ltd., (Assignees of Carpenter, R. G.). Jan. 10, 1917, [Convention date]. Moving and changing apparatus; reel and web apparatus.-An iiluminated sign of the travelling legend type comprises a front 37 having uniformly sized and spaced translucent portions, an opaque film 1 bearing legends formed by perforations smaller in size and more closely spaced than the translucent portions of the sign front 37, and lighting means 39 arranged so that the light projected through each of said perforations also passes through two adjacent translucent portions These portions may be openings, and may be covered by glass bulbs 40 which simulate electric incandescent lamps. Preferably a lightdiffusing device 38, such as a ground glass screen, is interposed between the film 1 and the lighting means 39. The film 1 is mounted on two spools 2, 3 adapted to be driven in opposite directions by gears operated by a shaft 4. The Specification as open to inspection under Sect. 91 (3) (a) comprises also two forms of reversing mechanism for the spools 2, 3 on which the film is wound. In the form shown in Fig. 3 (Cancelled), a motor 8 is brought into gear with one or the other of spools 2, 3 by an adjustable rod 14 carrying at its ends rollers 15 which bear against the wrapped-up film 1. The rod 14 is thus gradually moved laterally by the increasing thickness of film on one spool, carrying with it a slide 18 which is fitted with a spring-pressed wheel 22 which rides up an incline on a wedge 12 and then snaps past and causes the slide 18 to strike a stop 19 on the clutch shaft 4. In the form shown in Fig. 1, a projection at each end of the film engages one or the other of levers 28 connected by a link 29 which rocks an arm 30 carrying a wedge 31 which engages a companion wedge 32 on a flat spring 33. The arm 30 is thus snapped from one side to the other of the wedge 32, and by engaging a stop 34 on the shaft 4 de-clutches the motor 8 from one spool and connects it with the other. A link 35 connected to the arm 30 actuates a lighting switch 36. The projection at each end of the film is formed as part of means which may be employed for connecting the film to the spool, consisting of a metal strap 23 punched to form a bridge-piece 22 and an aperture through which are looped the film 1 and a piece of leather 25 secured to the spool. This subject-matter does not appear in the Specification as accepted.
Patent GB-865861-A (GB)
Title: Process for the reduction of alumina
IPC: C22B21/02
Filed: 1957-06-28
Abstract: A mixture of aluminium and aluminium carbide is produced by the reduction of alumina with a carbonaceous material in an electric arc furnace, the reduction taking place at a temperature in the range above 2300 DEG C. the reaction conditions being such that deposition of carbon by thermal dissociation of aluminium carbide is substantially avoided and the product has an average alumina content of less than 3% by weight.  Preferably the temperature is in the range 2300 DEG C. to 2600 DEG C.  The starting mixture is fed to the furnace and either falls under gravity into the reaction zone as fast as the reduction takes place or it is stoked to cause it to descend into the reaction zone.  Disturbances in the operation of the furnace may be overcome by addition of carbon alone or alumina alone. Preferably the starting mixture contains about 30% by weight of carbonaceous material and may be a mixture of hollow spherules of corundum with charcoal.ALSO:A mixture of aluminium and aluminium carbide is produced by the reduction of alumina with a carbonaceous material in an electric arc furnace, the reduction taking place at a temperature in the range above 2300 DEG C. the reaction conditions being such that deposition of carbon by thermal dissociation of aluminium carbide is substantially avoided and the product has an average alumina content of less than 3% by weight.  Preferably the temperature is in the range 2300 DEG C. to 2600 DEG C.  The starting mixture is fed to the furnace and either falls under gravity into the reaction zone as fast as the reduction takes place or it is stoked to cause it to descend into the reaction zone Disturbances in the operation of the furnace may be overcome by addition of carbon alone or aluminia alone.  Preferably the starting mixture contains about 30% by weight of carbonaceous material and may be a mixture of hollow spherules of corundum with charcoal.
Patent GB-459897-A (GB)
Title: Improvements in and relating to footwear
IPC: A43B23/24
Filed: 1935-07-20
Abstract: 459,897. Attachments for footwear. JONES, H. E., 14, Greenhill Road, Harlesden, London. July 20, 1935, No. 20700. [Class 17 (ii)] A garter-like device for wear inside a shoe around the instep comprises a thin unornamented piece of coloured material such as soft leather 12 to the ends of which are attached opposite ends of a short length of elastic tape 11. The coloured portion 12 conforms with the general shape of the openwork design 13 of a shoe upper and is visible therethrough. From a number of pairs of such devices of different colours, for wear with a pair of shoes, one which suits the clothing worn may be chosen. Specification 226,591, [Class 17 (ii)], is referred to.
Patent GB-1152663-A (GB)
Title: An Improved Method for Coating a Workpiece with A Coating Material.
Inventor: WALBERG ARVID C
IPC: B05D1/04
Filed: 1966-05-17
Abstract: 1,152,663. Adjusting the resistivity of electrostatic coating compositions. H. G. FISCHER & CO. 17 May, 1966, No.. 20740/68. Divided out of 1,152,661. Heading C4A. The resistivity of coating compositions for electrostatic spraying is adjusted by the addition of a thinner to between 0-60 megohms per inch cube. Increased resistivity is given by toluol or xylol, and decreased resistivity by acetone (or other ketones), acetates, butyl alcohol or an ethylene glycol monoalkyl ether. No specific coating media are disclosed.
Patent GB-1308525-A (GB)
Title: Lamp ballast circuit
IPC: H05B41/391
Filed: 1970-04-30
Abstract: 1308525 Lamp ballast circuit XEROX CORP 30 April 1970 [1 May 1969] 20800/70 Heading H2H  In a lamp ballast circuit of the type in which the series impedance with the lamp is capacitative, the impedance is varied by means of a variable inductor in series with the capacitance, the circuit being characterized in that the total impedance is always effectively capacitative. The voltage supply for a metal vapour gas discharge lamp 3 is provided by an auto transformer 1. The ballast circuit comprises a unit 2 whose impedance is always effectively capacitative. Unit 2 comprises a capacitor 11 in series with a saturable core reactor 16, which is shunted by an inductor 23 which ensures that unit 2 always has a net capacitative impedance. The saturable core reactor 16 may be controlled by means of a photo-cell 21 monitoring the light output of the lamp. Alternatively the lamp may be fed by a fixed output transformer, and the saturable core reactor may be replaced by an ordinary variable inductor.
Patent GB-644256-A (GB)
Title: Improvements in or relating to roofs for buildings
IPC: E04B7/06
Filed: 1948-08-06
Abstract: 644,256. Roofs. BLACKBURN (DUMBARTON), Ltd., HARGREAVES, W. A., and ROSS, G. S. Aug. 6, 1948, No. 20819. [Class 20(iv)] A prefabricated unit forming the hipped end of a building roof comprises a main truss composed of a beam 1, vertical and inclined members 2, 3, 4, with hangers 5 and braces 6, two half trusses having horizontal and inclined members 11, 12, 9, 10 in addition to the common vertical 2 and hangers 13 and braces 14, and a purlin structure composed of horizontals 15, 16, 19, 20, connecting the ends of the central hangers. Another pair of half trusses having horizontal and inclined members 25, 26, 23, 24, meet at their point of contact with a horizontal 31 joining members 11, 12, the unit being completed by members 32, 33 connecting these to the ends of the main truss. Corrugated aluminium sheets &c. forming the covering have sealing strips at the junction with the adjacent unit. Specifications 644,251 and 644,253 are referred to.
Patent GB-1507454-A (GB)
Title: Security paper
IPC: B41M3/14
Filed: 1975-06-19
Abstract: 1507454 Security paper; preventing fraud WIGGINS TEAPE Ltd 19 June 1975 [10 May 1974 24 July 1974] 20826/74 and 32743/74 Headings B6A and B6C Security paper for cheques, passports &c. comprises a paper base coated with a composition containing a leuoodye colour former, a clay and/or CaCO 3  filler and a starch, casein or latex binder. When the paper is stamped with a stamp impregnated with a mixture of an acidic material reactant and a dark ink, the colour formed by contact between the reactant and colour former produces an authenticating coloured halo around the stamped dark ink data. The effect of the filler is said to be to retain the ink in its place of application whilst the reactant spreads to produce the halo. Coatings of different colour formers may be applied to different areas of the paper to give multicoloured haloes. Numerous examples of suitable colour formers and reactants are specified. The paper may additionally bear chemicals which give colours when contacted with fountain pen ink or ballpoint pen ink eradicators.
Patent GB-597361-A (GB)
Title: Improvements in and relating to curved material comprising a laminated skin and a light-weight core
Filed: 1945-08-17
Abstract: 597,361. Compound sheet materials. JABLONSKY, B. Aug. 17, 1945, No. 20979. Drawings to Specification. [Class 140] Curved composite material is made from a cellular body of expanded or foamed material, e.g. rubber which is curved by a pressing process before it is united with a laminated skin. The pre-shaping of the cellular body can take place during the process of making. The layers of the laminated skin consist of wood veneers, textile fabric, paper, pulp, inorganic fibrous material or metal foil and if fibrous laminµ are used they can be densified by pressure. Pliable laminated layers can be pressed to shape whilst they are being united with the pre-shaped cellular body whereas relatively thick layers can be wholly or partly preformed. The adhesives used for bonding the layers can be natural or synthetic and may be water-resisting, thermoplastic, thermosetting or cold setting. Two or more pieces of cellular structure pressed to shape can be cemented to laminated layers sandwiched between them and to a laminated skin at the surface of the composite material. The composite material can be formed with overlapping joints wherein either the laminated skin or the cellular body can project. The material can be used for motor car bodies, hulls, propellers, aeroplane parts, boats, cowling or curved furniture.
Patent GB-482695-A (GB)
Title: Improvements in or relating to the preparation of cellulose ethers
IPC: C08B11/02
Filed: 1937-07-30
Abstract: When making cellulose ethers by reacting alkali cellulose with alkyl halide at an elevated temperature under super-atmospheric pressure, unreacted alkyl halide is separated by adding to the reaction mixture a quantity of cellulose ether solvent at an elevated temperature sufficient to vaporize the alkyl halide; mixing of the solvent and reaction mixture may be carried out in the alkylator or more conveniently in a separate chamber, and the resultant hot mixture is transferred to a further chamber under a lower pressure in which the alkyl halide flash evaporates.  The alkali halide remains as a suspension in the resulting cellulose ether solution; and this and other insoluble matters are removed by filtering the solution.
Patent GB-1530218-A (GB)
Title: Microscope illuminating device
IPC: G02B21/06
Filed: 1977-05-19
Abstract: 1530218 Illuminating arrangements for microscopes ERNST LEITZ WETZLAR GmbH 19 May 1977 [16 June 1976] 21090/77 Heading G2J The variable diaphragm 7 of a transmission microscope illuminator is mounted (by surfaces 5, 5a) for limited transverse movement, thereby allowing the optical axis to be traversed parallel to itself to assist alignment with an objective (not shown). The aperture size is adjusted by ring 11, which also affords a convenient member to push against to effect the transverse motion.