baber/WOPTO huggingface dataset:
Patent GB-745612-A (GB)
Title: Improvements in or relating to frequency discriminator circuits for ultra-high-frequency oscillations
IPC: H03L7/04
Filed: 1953-12-15
Abstract: 745,612. Automatic frequency control systems. PHILIPS ELECTRICAL INDUSTRIES, Ltd. (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). Dec. 15, 1953, No. 34964/53. Class 38 (4). An oscillator 1 is stabilized at a nominal frequency by a frequency deviation discriminator comprising two cavity resonators 6, 7 excited from a waveguide 4 fed by the oscillator 1, tuned to frequencies symmetrically lying on opposite sides of the nominal frequency, and each resonator comprises a damping member energized in push-pull by an alternating voltage from a source 10 so that the added output of the resonators from a common conductor 13 after detection by a rectifier 14 has the frequency of the source 10 and an amplitude and phase sense dependent on the magnitude and sense of the frequency deviation, and when applied to a phasesensitive discriminator 16 together with a reference voltage from the source 10, a D.C. output is obtained varying in amplitude and polarity with the frequency deviation, which is retroactively applied to a frequency corrector '18 to restore the correct frequency. The damping members may be ferrite rods 21 equally magnetically biased by permanent magnets 20 and differentially magnetized by coils 22 from the source 10, the rods being linked with loops connected by short lines 8, 9 to corresponding loops inside the resonators. The resonators 6, 7 may be arranged on opposite sides of a common partition, and equally coupled with the waveguide 4 by an aperture in the plane of the partition registering with an aperture in the waveguide. The source 10 output may be sinusoidal or a rectangular switching voltage serving alternately to disable the output of each resonator. Alternatively the damping of each resonator 6, 7 may be produced by a rotating disc having a vane periodically passing through a slot in the resonator.
Patent GB-1472645-A (GB)
Title: Method for making fibres
IPC: D01F6/18
Filed: 1974-08-08
Abstract: 1472645 Polyacrylonitrile fibres MONSANTO CO 8 Aug 1974 [9 Aug 1973 10 Aug 1973] 34966/74 Heading B5B [Also in Division C3] Acrylonitrile-containing polymeric material of good dimensional stability under hot-wet conditions is made by forming a mixture of 5-35 % polymer with solvent, heating to dissolve the polymer, wet- or dry-spinning to form fibres, washing and drying the fibres, heat treating at at least 140 C. for 1-10 minutes to effect crosslinking, and crimping either before or after the heat treatment. The polymeric material comprises (A) a polymer selected from polyacrylonitrile, a copolymer comprising at least 35% acrylonitrile, or a blend of polyacrylonitrile or a copolymer thereof and 2-50% of another monomer and (B) a copolymer comprising 50-90% acrylontrile and 10-50% of a N-substituted derivative of an ethylenically unsaturated acid amide, e.g. N-methylolacrylamide, N-methylolmethacrylamide, or N- methoxymethylacrylamide, or mixtures, the amount of (A) being 70-98% and of (B) 2-30%. The fibres may be treated with dilute acid, e.g. 0À001 N to 0À01N sulphuric or phosphoric before heat treatment. The fibres may be used in carpets. The solvent used may be dimethyl-formamide or -acetamide.
Patent GB-1079999-A (GB)
Title: Method of determining the thickness of a coating on a mtal base
IPC: G01N23/223
Filed: 1964-08-26
Abstract: 1,079,999. Thickness gauge using X-rays. UNITED STATES STEEL CORPORATION. Aug.26, 1964 [Sept.10, 1963], No.34986/64. Heading G1A. In a method of determining the thickness of a metal coating on a strip of different metal, X-rays are directed at the strip and the intensity of the resultant secondary radiation, having passed through the coating, is measured and the value compared with the previously obtained reference value of intensity for secondary X-rays received from a flat base of material, having the same radiation characteristics as the metal strip, which have passed through a flat test sheet or sheets of a material different from the coating material, simulating a known coating thickness. In the embodiment described, the ratio recording device or indicator is calibrated using a number of such test sheets which are of material having absorption characteristics which have a linear relationship with those of the coating material, but having a considerably lower density thus allowing testing and evaluation of the test sheets for thickness, imperfections &c., before and after measurement, which is not possible with actual coatings. The measurement of coatings of tin on a steel strip, utilizes test sheets of plastics material e.g. polyethylene terephthalate. In the calibration of the recorder 60, one or a number of test sheets which have been compared with known thicknesses of tin and therefore simulate these known thicknesses are placed on a steel base S, the strip to be coated with tin. X-rays from a tube 2 pass through a steel diaphragm 8. Fluorescent rays characteristic of the steel are received direct from the diaphragm by the radiation counter 26, which may be a scintillation counter, and fluorescent rays from the base S having passed through the test sheet, by counter 12. Signals from each counter pass through the channels shown in Fig 1 and are compared by the recorder 60. If the voltages do not balance, the motor 65 moves the arm 64A to equalize them. The motor also drives the pen associated with the recorder chart. The resistor 66 is so chosen that the ends of the scale 68 will indicate the thickest and the lightest coatings to be measured. The calibration may be checked with a number of tin-coated samples, whose recorded values with the apparatus are checked against value obtained by chemical methods. After calibration of the recorder scale, unknown coated sheets may be measured directly. In the calibration for zinc coatings, the test sheets are of granulated zinc in a plastics binder or in a homogeneous alloy mixture with aluminium.
Patent GB-1366043-A (GB)
Title: Pushing device for enabling a barge to be pushed by a tugboat
IPC: B63B35/70
Filed: 1972-07-26
Abstract: 1366043 Pushing barges WESER AG 26 July 1972 [31 July 1971] 35014/72 Headings B7V and B7S A tug 2 pushes barges 1 by means of a pushing shoulder 5 which may comprise a metal base and a hardwood beam 6 mounted preferably permanently at the bow of the tug and which cooperates, in use, with a relesable beam 7 of U- section which extends vertically at the stern of the barges. The beam 7 may be located between two barges by a web plate 8, the weight of the beam 7 being taken by a projection 9, and fixed securely by ropes attached to the sterns of the barges. In a modification, the beam is in the form of an elongate G-clamp with a screw attachment to the stern of a barge. The tub may pivot about a vertical axis relative to the barges under the control of cables 3, 4 which run from the tug's stern, around pulleys on the barges and back to winches on the tug.
Patent GB-1431845-A (GB)
Title: Pressure equalisation adsorption systems
IPC: B01D53/04
Filed: 1973-07-24
Abstract: 1431845 Pressure-swing absorption W R GRACE & CO 24 July 1973 [26 July 1972] 35128/73 Heading B1L An absorption bed C is used to separate at least one component of gas mixture which enters under pressure by pipe 20 and the non- preferentially absorbed component(s) of the gas mixture are discharged at 23. Prior to "breakthrough" the flow of gas mixture is stopped and absorber C is reduced to a lower pressure by "equalisation" with tank T2 via line 27. Subsequently the absorber is reduced to a still lower pressure by closing valve V14 and pressure equalising with tank T3. Valve V13 is then closed, valve V12 opened and the pressure reduced to atmospheric or below. Stored gas in T3 is now used to purge the absorbent bed and then the bed is partially represented by connection to tank T2. Flow of gas mixture again then repeats the cycle of absorption and regeneration. The repressurisation may use gas derived pressure equalisation or it may use primary product.
Patent GB-1036187-A (GB)
Title: Tungsten-titanium carbide material
Inventor: STAFFORD JEFFREY SAMUEL
IPC: C22C29/06
Filed: 1964-08-27
Abstract: A sintered hard metal has the following composition, by weight:- .Titanium carbide.32-48% .Tungsten carbide.32-48% .Nickel.6-12% .Molybdenum.6-12% .Cobalt.2-6% The material may be used for cutting tools or as a wear resistant material e.g. in rubbing contact with steel.
Patent GB-381785-A (GB)
Title: Improvements in or relating to transformers
IPC: H01F29/14
Filed: 1931-12-19
Abstract: 381,785. Current transformers. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ, 12, Place des Etats-Unis, Montrouge, Seine, France. Dec. 19, 1931, No. 35207. Convention date, Dec. 31, 1930. [Class 38 (ii).] In a current transformer having premagnetizing windings, the laminations forming the core are cut out so that one or more' partial magnetic circuits are formed through which the premagnetizing fluxes flow. A ring shaped core, Fig. 1, has two semicircular slots F1, F2 provided in the laminations and the premagnetizing windings produce fluxes in the partial circuits as shown by arrows so that the net linkage with the primary and secondary windings is zero. In a modification only one slot is used. A similar arrangement may be employed with a rectangular core. Specification 147,047, [Class 38 (ii), Electric currents, Converting &c.] is referred to.
Patent GB-1373158-A (GB)
Title: Thyristors
IPC: H01L29/74
Filed: 1972-07-28
Abstract: 1373158 Thyristors SIEMENS AG 28 July 1972 [16 Aug 1971 23 Aug 1971] 35289/72 Heading H1K The non-contacted base region 8 of a thyristor is provided with a central relatively highly conducting portion 9 situated beneath both the trigger and main electrodes 6, 3 so as not to project beyond the outermost periphery of these electrodes. The portion 9 causes breakdown to occur initially within the bulk of the device, rather than at its surface where under certain conditions it tends to cause damage. If the resistivity of the outer, less conductive portion of the base region 8 is itself inhomogeneous then that of the central portion 9 must be lower than the lowest value occurring in the outer portion. Figs. 4 and 5 (not shown) illustrate a thyristor having an annular auxiliary emitter region and electrode between the central trigger electrode and the outer annular main emitter region and electrode. In this case the portion 9 must lie within the outer periphery of the auxiliary emitter electrode.
Patent GB-1088928-A (GB)
Title: Improvements in and relating to the manufacture of metal eye bolts
Inventor: WALKER NORMAN HAROLD
IPC: B23K13/00
Filed: 1965-08-18
Abstract: 1,088,928. Welding by pressure; making bolts. STEVEN WALKER & SONS Ltd. Aug. 11, 1966 [Aug. 18, 1965], No. 35344/65. Headings B3A and B3R. A metal eye bolt with a threaded shank 12 is produced by the steps of severing a blank from wire stock, threading part of the blank, e.g. by a thread rolling operation, bending the remaining portion of the blank to form a loop 18, heating the free end 20 of the loop and the adjacent portion 22 of the blank by means of a high frequency induction heating field to welding temperature and placing the heated blank in suitably shaped welding dies 26, 28 and forge welding the free end 20 of the loop into the shank to form a closed eye with a neat crotch. The eye bolt is rotated manually while the upper die part 26 is reciprocating to ensure a smooth and uniform weld. The end of the loop may be scarfed (Fig. 5, not shown) or V-shaped; in the latter case a complementary notch is provided in the stem of the blank.
Patent GB-1093858-A (GB)
Title: Disposable applanation tonometer
IPC: A61B3/16
Filed: 1965-08-20
Abstract: 1,093,858. Tonometers. A. POSNER and R. INGLIMA. Aug. 20, 1965 [May 6, 1965], No. 35940/65. Heading A5K. A disposable tonometer comprises a hollow, cylindrical container 10 having an inturned flange 11 at one end and a pull-out ring 13 at the other, and a cylindrical rod 15 provided with a hub 16 intermediate its ends which guides the rod 15 for axial movement within the container 10. The flanges 11 and the ring 13 form limiting stops against which the hub 16 abuts in the two extreme positions of the rod 15 within the container. Before use, the rod 15 is held within the container by a pin 18 which passes through a hole in the container wall and engages an annular groove 17 in the hub 16. A layer of stain is applied to each end of the rod. The tonometer is sterilised and housed in an airtight membrane.
Patent GB-301932-A (GB)
Title: Improvements in or relating to the manufacture of reinforced concrete piles
IPC: E02D5/72
Filed: 1928-12-08
Abstract: 301,932. Grimaud, G. Dec. 9, 1927, [Convention date]. Piles.-Armoured-concrete screw piles, or the tubular preparatory piles in which such piles are cast, are combined with tapering shoes, forming points, provided with helical excavating wings or vanes, and through which water or cement may be forced. Fig. 3 shows a shoe or point consisting of a centering point 5 and screw vanes 4, rods or straps 3 connect it to the body a concrete pile, and passages 6 are provided for the issue of water &c. In a modification, the shoe has an axial hole 7, Fig. 5, with notched or serrated edges, down which passes a rod or tube of similar section provided with a boring-bit also provided with apertures, such as 6, Fig. 3. In the casting of piles in situ, by means of concrete under air pressure, concrete &c. shoes are arranged to close the lower end of a hollow removable casing 10, Fig. 10, being connected to it by teeth 11, such that the shoe is left in the ground when the casing is raised. The armouring of the pile may consist of longitudinal bars 12, horizotal ties 13, and helical windings 14, Fig. 9; the bars 12 at their lower ends are formed into hooks 15, to which the straps 3, Fig. 8, of the shoe are attached.. Water or cement passages 16, leading from the axial passage 17, Fig. 9, are also formed. There may also be used an armoured concrete screw, the length of which is less than the depth of the hole to be made. The Specification as open to inspection under Sect. 91 (3) (a) contains also a description of a basement-carrying " pole " or pile, shown in Fig. 14 (Cancelled). This subject-matter does not appear in the Specification as accepted.
Patent GB-1529607-A (GB)
Title: Medicinal composition
IPC: A61K38/06
Filed: 1976-09-02
Abstract: 1529607 Veterinary compositions TAKEDA YAKUHIN KOGYO KK 2 Sept 1976 [9 Sept 1975 15 March 1976] 36380/76 Heading A5B Veterinary compositions comprise (a) at least one adrenal cortical hormone and (b) at least one thyroid stimulating hormone releasing hormone. The hormone (a) may be 9α-fluro-cortisone, 9α-flurocortisol, prednisone, prednisolone, triamcinolone, medrol, dexamethasone, betamethasone, paramethasone or flumethasone. The hormone (b) may be TRH, L-2-oxooxazolidine-4-carbonyl-L- histidyl-L-prolinamide, L-trans-5-methyl-2-oxooxazolidine-4-carbonyl-L-histidyl -L- prolinamide or L-2-oxothiazolidine-4-carbonyl-L-histidyl-L-prolinamide. The hormones may be present in the form of esters or salts. The compositions may also contain vitamins, sulphonamides, antibiotics and conventional additives. They may be used in the form of injections, powders, tablets, capsules, pills, ointments, topical liquids, sprays and aerosols, and implants.
Patent GB-1104844-A (GB)
Title: Improvements in and relating to multi-phase alternating current apparatus
Inventor: RICHARDSON PHILIP
IPC: H02K3/12
Filed: 1965-08-25
Abstract: 1,104,844. Dynamo-electric machines. C. A. PARSONS & CO. Ltd. 11 July, 1966 [25 Aug., 1965], No. 36453/65. Heading H2A. The terminal voltage of a large A.C. machine, e.g. a synchronous generator, is kept down without the use of parallel paths, by splitting its armature winding into two angularly displaced windings whose outputs are aggregated by means of a suitable phase-displacing transformer. As shown, an alternator winding is split into two three-phase windings A, B, C, and A<SP>1</SP>, B<SP>1</SP>, C<SP>1</SP>, displaced by 30 degrees. This phase displacement is accommodated by connecting them to star and delta-connected transformer primary windings a 1 , b 1 , c 1 , and a<SP>1</SP> 1 , b<SP>1</SP> 1 , c<SP>1</SP> 1 , respectively. Various transformer arrangements are described. The principle may be applied to synchronous motors and to asynehronous machines.
Patent GB-915618-A (GB)
Title: Vitamin k animal feed premix
Inventor: GALLER WILLIAM
IPC: A61K31/355
Filed: 1961-10-11
Abstract: A Vitamin K animal feed premix comprises a menadione bisulphite adduct, a solid carrier and one or more acidic materials capable of inhibiting decomposition of the menadione bisulphite adduct in the premix, the carrier being a material which would normally promote decomposition of the menadione bisulphite adduct in the absence of the acidic material(s) and the acidic material(s) being present in sufficient proportions to inhibit such decomposition. The bisulphite adduct is preferably menadione sodium bisulphite, though other alkali metal, alkaline earth metal, ammonium or amine bisulphite salts may be used.  Carriers mentioned are calcite (preferred), soy bean meal (preferred), maize meal, corn cob meal, milo, soy bean oil meal, alfalfa meal, dried whey, wheat shorts, distillers' dried solubles, salt, meat scraps, butyl fermentation solubles, feather meal, poultry by-product meal, wheat middlings, dextrose, lactose meal, dried kelp, linseed oil meal, oatmeal, dried yeast and wheat bran.  Acidic materials mentioned are monocalcium phosphate; calcium sulphate, nitrate, lactate, stearate and glucuronate; potassium pyrophosphate and pyrosulphate; hemi-sodium phosphate; sodium acid pyrophosphate; ferric pyrophosphate and orthophosphate; trialuminium phosphate; monomagnesium phosphate; ammonium, zinc, iron, aluminium and manganese salts of hydrochloric, nitric and sulphuric acids; dibasic ammonium phosphate; acetyl salicylic acid; terephthalic acid; choline chloride; niacin; 2-furoic acid; and other organic and inorganic salts and organic acids.  Examples disclose that monopotassium phosphate, mono-ammonium phosphate, sodium potassium tartrate and potassium sulphate are unsuitable.  The acidic material should generally be present in an amount sufficient to lower the pH of a water extract of the premix to a value between about 4 and 6,5. Preferred premixes contain at least 4 grams menadione sodium bisulphite per pound and 12 to 36 grams of monocalcium phosphate per pound or, alternatively, at least 12 grams of terephthalic acid per pound and some monocalcium phosphate.  Other feed ingredients may be added to the premix. In certain examples, the comparative effects of coating the menadione bisulphite adduct with vegetable gum is studied.
Patent GB-619566-A (GB)
Title: Improvements in or relating to the treatment of aqueous streptomycin solutions
Filed: 1946-12-11
Abstract: Concentration and recovery of streptomycin from solutions thereof is effected by passing the solution, adjusted to a pH not less than about 3 (preferably 6-9), through a mass of coarse activated carbon maintained in a substantially static condition (preferably in a column or tower), and subsequently eluting the adsorbed streptomycin from the mass by means of a dilute solution of an acid, having a pH not greater than about 2 (preferably 1-2), which is advantageously passed through the carbon in the opposite direction to that of the original solution.  The solution treated is preferably an aqueous solution, e.g. a broth solution with or without previous treatment or processing, but may also be an aqueous-organic solvent or organic solvent solution, e.g. a solution in aqueous-acetone, methanol or ethanol.  The carbon may be a steam-treated activated carbon or a chemically-activated carbon (i.e. one produced by a process which includes the chemical dehydration of a carbohydrate, e.g. by the action of magnesium chloride, silver nitrate, zinc chloride, calcium chloride, calcium oxide or especially phosphoric acid), this latter type having the effect of increasing the total antibiotic activity of the product. This increase may be greater than produced by the process of Specification 616,438, and solutions which have been treated by that process may be further activated by the present process.  As acids for the elution may be employed easily volatilizable acids such as hydrochloric or formic acid (advantageously diluted with organic solvents such as ethanol or methanol), or also trichloracetic acid, or preferably an aqueous solution of an acid forming an insoluble alkaline-earth metal salt, e.g. sulphuric or phosphoric acid, which acids may also be employed in aqueous-organic solvent (e.g. aqueous methanol, ethanol or acetone) or alcoholic (preferably lower aliphatic alcoholic) solution.  Aqueous sulphuric or phosphoric acid eluates may be neutralized by treatment with or passage through an acid-removing resinous material, e.g. "Deacidite," or by the addition of suitable barium or calcium compounds, e.g. the oxide, hydroxide, carbonate or salts with weak organic acids such as acetic acid. Examples illustrate the various features of the invention.
Patent GB-881381-A (GB)
Title: Improvements relating to cladded metals
IPC: C23C4/18
Filed: 1956-11-30
Abstract: 881,381. Coating with metals. BALLARD, W. E., and METALLISATION Ltd. Dec. 2, 1957 [Nov. 30, 1956], No. 36607/56. Class 82(2) [Also in Group XXII] A fused joint between base metal parts is coated by spraying the joint with cladding metal, and by heating the sprayed-on coating. Two members 10, 11 of coated metal having base metal cores 12, 13 are welded together by electric arc using a metal filler 14. The filler is ground down and roughened to form depressions for the reception of cladding metal. The cladding metal, having the same composition as the coatings 17, 18, is sprayed to form the coatings 21, the jet of cladding metal being surrounded by inert gas, such as argon. The coatings 21 are fused to the members and the filler by an electric arc having a shield 24 of argon containing a small quantity of hydrogen. Thecoatings are finally ground or machined flush with the faces of the members. The members may be of aluminium clad aluminium alloy, nickel clad steel, or titanium clad stainless steel.
Patent GB-337642-A (GB)
Title: Improvements relating to apparatus for use in the electrical precipitation of solid or liquid particles from gases
IPC: B03C3/51
Filed: 1929-11-29
Abstract: 337,642. Lodge-Cottrell, Ltd., and Lodge, L. Nov. 29, 1929. Gases, treating electrically.-A hollow collecting electrode comprises a movable frame consisting of vertical bars d of aitch or double channel cross-section, laterally projecting brackets e secured at intervals along the front and back faces of the bars, and sheet metal plates or louvres g, the upper edge of which engages with a ledge f on the bracket while the lower edge fits in a recess h on the bracket immediately beneath. The plates lie close to the bars, except at their upper edges where they project to form an inclined surface, sufficient space being left between adjacent plates to permit the passage of the deposited material. The bars d are attached by links j to a flat crossbar i, which in turn is supported at its ends by a knife-edge, l in a hollow link k. Each link k carries a projecting edge m which engages a recess in a fixed bracket n, thus enabling the bars to be slightly displaced parallel to themselves. The movement, and consequent detachment of the particles is effected by a hammer or other device p, acting on a horizontal rod o, Fig. 2, which interconnects the cross bars i of a series of plates. An alternative method of suspending the crossbars i is shown in Figs. 7 and 8.