baber/WOPTO huggingface dataset:
Patent GB-655575-A (GB)
Title: Improvements in or relating to direction and position finding systems employing radiant wave energy
IPC: G01S1/22
Filed: 1947-12-23
Abstract: 655,575. Frequency measurements. GUANELLA, G. Dec. 23, 1947, No. 34092. Convention date, Oct. 19, 1939. [Class 37] [Also in Group XL (c)] In a means for measuring the beat frequency between two received radio frequencies used in a radio navigation system (see Group XL (c)), the beat frequency produced by heterodyning the two received signals in a detector V8, V9 is converted into a square wave of. limited amplitude by valve V10 and applied in pushpull to valves V11 and V12. During one half cycle of the square wave, V12 conducts and charges condenser C12 and during the next half cycle the condenser is discharged through the meter J so that the average current through the meter is dependent on the beat frequency. In a modification, Fig. 7 (not shown), the beat frequency is applied to a resistance-inductance network giving an output with an amplitude proportional to frequency which is rectified and applied to a voltmeter, and in a further embodiment, Fig. 8 (not shown), the network comprises a series condenser and shunt resistance.
Patent GB-743629-A (GB)
Title: Improvements relating to titanium dioxide pigments
IPC: C09D11/02
Filed: 1953-12-08
Abstract: Titanium dioxide pigments are coated with a resinous reaction product of an alkylated methylol melamine and a saturated alkylamide of chain length from ten to twenty carbon atoms, preferably 16-18, and having an N-alkylol substituent of less than four carbon atoms.  N-alkylol stearamides are preferred though the N-alkylol derivatives of fatty acid amide or thioamide, cyanamides, ureas and thioureas may be used. The weight ratio of the alkylated methylol melamine to the amide is between 1 : 5 and 2 : 1, preferably 1 : 1, and the weight of the coating being between 0.5 and 10 per cent of the weight of the titanium dioxide preferably 3 to 10 per cent.  In an example 30.5 parts stearamide, 9.5 parts of 37 per cent formaldehyde, 38.1 parts dimethylated trimethylol melamine 0.5 parts potassium hydroxide were reacted at 90 DEG  C. in aqueous solution containing a wetting agent to give, after cooling, a stiff paste.  The solution was diluted and an acid curing catalyst consisting of ammonium hydroxide and ammonium sulphate added.  After coating the pigment the resin was cured at 142 DEG  C. for 25 minutes.ALSO:A pigment comprising titanium dioxide particles coated with 0.5-10 per cent of a coating consisting of the reaction product of an alkylated methylol melamine and a saturated alkylamide having a chain length of from 10 to 20 carbonations and an N-alkylol substituent containing fewer than four carbonations is made by slurrying titanium dioxide particles with an aqueous dispersion of the resinous reaction product, dewatering the slurry and heating the substantially dry residue between 100 and 200 DEG C. to cure the coating.
Patent GB-1160199-A (GB)
Title: Process of preparing Phosphors
Inventor: PALUMBO DOMINIC T
IPC: C09K11/82
Filed: 1968-07-18
Abstract: 1,160,199. Luminescent materials. SYLVANIA ELECTRIC PRODUCTS Inc. 18 July, 1968 [3 Aug., 1967], No. 34356/68. Heading C4S. A process of preparing rare earth activated vanadate phosphors comprises firing the starting mix, in air for instance, preferably at a temperature of 850‹ to 1050‹ C., e.g. 950‹ C., cooling, washing in a basic solution, preferably a relatively strong alkali such as KOH, NaOX and/or NH 4 OX, washing, in water for instance, until a neutral pH is reached, and refiring, preferably at a temperature of 850‹ to 1050‹ C., e.g. 950‹ C. The product is then preferably washed again in a strong alkali solution followed by a water wash. Yttrium and/or gadolinium phosphors with di- or trivalent activators are specifically instanced. The starting materials may be oxalates of Y and/or Gd and oxalates of Pr, Sm, Tb and/or Dy and especially Eu and ammonium vanadate. Also bismuth, calcium and/or manganese oxalate may be added to the raw mix. U.V. excitations at wavelengths from 254 to 466 mm. are instanced.
Patent GB-605377-A (GB)
Title: Improvements relating to radio receiver circuits
IPC: H03J5/24
Filed: 1945-12-20
Abstract: 605,377. Radio-receiving apparatus. COSSOR, Ltd., A. C., and WYNN, A. H. A. Dec. 20, 1945, No. 34592. [Class 40 (v)] In a radio receiver with wave-band switching, each tuned circuit comprises a variable condenser 5, a single pre-set inductance 3, a fixed shunt condenser 7 for the lowest frequency band, and pre-set trimmer condensers 9 for the higher frequency bands. The wave-bands are selected by means of push-button switches 1, 2 having L-shaped moving contacts 13, 14 respectively, each of which simultaneously connects corresponding sets of fixed contacts 3<1>, 4<1>, 61 when in the operated position.
Patent GB-461717-A (GB)
Title: Improvements relating to waste fittings or outlet pipes for sinks, washbasins, baths and the like
IPC: E03C1/264
Filed: 1935-12-13
Abstract: 461,717. Strainers. JACKSON, G. A. Dec. 13, 1935, No. 34655. [Class 46] A strainer for the outlet pipe of a sink, wash-basin or bath consists of a perforated bucket a with an axial stem d for lifting it out of the waste fitting b, in which it rests with a flange a<1> supported on the top of the fitting or on an internal flange c. The bucket may have perforations a<2> in the bottom and slots a<3> in the wall.
Patent GB-388516-A (GB)
Title: Improvements in wireless receiving apparatus
IPC: H03J3/14
Filed: 1931-12-15
Abstract: 388,516. Current meters. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, BLIGH, N. R. and HARRIS, N. L., c/o General Electric Co., Wembley, Middlesex. Dec. 15, 1931, No. 34748. [Class 37.] A tuning indicator for wireless receivers consists of a glow-discharge tube 5 of the type having a long cathode 7, the length of the glow along which indicates the anode current of the valve 1. Specifications 344,738 and 380,445, [both in Group XL], are referred to.
Patent GB-208012-A (GB)
Title: Improvements in or relating to safety locks for locking and sealing vehicles, warehouses and the like
IPC: E05B67/36
Filed: 1922-12-20
Abstract: 208,012. Engel, W. Dec. 20, 1922. Portable seal locks; staple and slotted-plate fastenings; locks, pin-key.-Doors of railway vehicles, warehouses, &c., are fastened in the closed position and sealed by the insertion of a headed member carrying a seal into a casing, the headed member securing a hasp between its head and the casing and remaining in the casing until the key is inserted through the seal to release pawls. The hollow casing a is fixed to the door-jamb and has a depression covered by a hinged flap z to receive the hasp f in the door, and also has internal shoulders k, k<1>. A member comprising two hollow tubes b, y carries a seal of paper between the hinged flaps r of a detachable member, and when inserted into the casing pivoted pawls n carried by the inserted member engage under the shoulders k, k' and prevent release, the head t securing the hasp f. To release, a key c, Fig. 6, is inserted down the centre of the inserted member, projections c<1> on it traversing slots s in the member y until they reach the parts x, where the key is turned slightly and pushed further, the projections engaging the tails q of the pawls and releasing them from the projections k, k<1>, whereupon catches w on the key engage behind the flaps r and enable the member to be lifted from the casing. Reference has been directed by the Comptroller to Specifications 12966/99 and 5471/06.
Patent GB-520802-A (GB)
Title: Improvements in or relating to dry shavers
IPC: B26B19/02
Filed: 1938-11-30
Abstract: 520,802. Dry shavers. SCHIFF, H. T. Nov. 30, 1938, No. 34835. [Class 131] In a dry shaver the inner toothed cutter 17, which is reciprocated by an eccentric pin 14 on the driving shaft 13, is pressed against the slotted shear plate 16 by 'spring 28 housed in tapered slots so that the ends of the springs are free to move with the cutter. The slots 21 in the shear plate extend along the top and down the outside flange thereof. The cutter head is secured to the casing 10 by clamping members 32 held by bolts 38 and nuts 30 and having flanges 34, 35.
Patent GB-1463095-A (GB)
Title: Chairs
IPC: A47C27/14
Filed: 1974-08-07
Abstract: 1463095 Seat upholstery ORTHOPEUTIC CHAIR CO Ltd 30 July 1975 [7 Aug 1974] 34885/74 Heading A4M A chair frame is fitted with seat 15 and back 8 or 8a cushions each comprising a body of resilient material, e.g. foamed polyurethane, including a plurality of portions each extending transversely for the full width of the body, wherein the hardness of the material of adjacent portions is different. In one form of back cushion 8, Fig. 3, portions 9, 11  and 13 are relatively soft and portions 10, 12 relatively hard. The portions are joined to a soft facing layer 14 which extends to the top of the back of the chair frame. An alternative back cushion 8a, Fig. 4 has relatively soft portions 9a, 11a, a relatively hard portion 10a, and a soft covering layer 14a. The front face of the cushion 8a has a recess 12a. A seat cushion 15, Fig. 5, has relatively soft portions 16, 18, a relatively hard portion 17, and a soft covering layer 19.
Patent GB-327411-A (GB)
Title: Improvements in carrying out condensation reactions with non-aromatic compounds
IPC: C07C2/86
Filed: 1928-11-27
Abstract: 327,411. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Nov. 27, 1928. Hydrocarbons; ketones.-Non-aromatic hydrocarbons are condensed with organic compounds containing a halogen, ester, or ether group, in the presence of an anhydrous metal halide such as is normally used in the Friedel-Crafts' reaction, and at elevated pressures. The pressures applied vary between 2 and 100 atmospheres depending on the temperature, the reaction being accelerated by heating, if desired. Examples are given of the condensation in the presence of aluminium chloride of (1) petroleum with phosgene, the products being ketones of the aliphatic or cycloaliphatic series; (2) hexane with acetyl chloride, the product containing octanone; (3) hexane with ethyl chloride, to give particularly octane; (4) ethylene with methyl chloride; (5) hexane with benzoyl chloride; and (6) cyclohexane with acetyl chloride. In further examples, n-butane is condensed with the double compound of phosgene and aluminium chloride, and ethylene is condensed with the double compound of ethyl ether and boron fluoride. The products of the reactions are oily liquids, and in some cases a substance resembling petroleum jelly and solid paraffin hydrocarbons can be separated after distilling off the low-boiling constituents. Specifications 307,802 and 313,067 are referred to.
Patent GB-1053485-A (GB)
IPC: C08F8/42
Filed: 1964-08-26
Abstract: 1,053,485. Lubricants; fuels. LUBRIZOL CORPORATION. , Aug. 26, 1964 [Sept. 3. 1963], No. 34961/64. Headings C5F and C5G. [Also in Division C3] A lubricating composition comprises a major proportion of a lubricating oil and a minor proportion of a nitrogen- and boron-containing composition made by the steps of (A) forming an intermediate by the reaction of an alkylene amine with from 0À1 to 10 equivalents of a boronoxide, boron halide, boron acid; ester of a boron acid or ammonium salt of a boron acid and (B) reacting said intermediate with a hydrocarbonsubstituted succinic acid-producing compound having at least 50 aliphatic carbon atoms in the hydrocarbon substituent, the ratio of equivalents of said succinic acid-producing compound to said amine being from 0À2:1 to 2:1. The lubricating oils may be of synthetic, animal, vegetable or mineral origin. Synthetic polyester oils such as didodecyl adipate and di-2-ethylhexyl sebacate are preferred as jet engine lubricants. Oil-soluble neutral and basic salts of alkali or alkaline earth metals with sulphonic acids, carboxylic acids, or organic phosphorus acids may be added as detergents. Metal dithiocarbamates, xanthates, Group II metal phosphorodithioates and their epoxide adducts, hindered phenols, sulphurized cycloalkanes, dialkyl polysulphides, sulphurized fatty esters, phosphosulphurized fatty esters, alkaline earth metal salts of alkylated phenols, dialkyl phosphites, triaryl phosphites and esters of phosphorodithioic acids may also be added. Detailed examples are given which specify, in addition to the above-described types of additives: sulphurized sperm oil, poly-(alkyl methacrylates, poly-(alkyl siloxanes), lard oil, and oleyl amide. The nitrogen- and boron-additives are also useful in gasolines, burner fuel oils, oil-fuel mixtures for two-stroke combustion engines, cutting oils, transformer oils, and gear oils.
Patent GB-897140-A (GB)
Title: Improvements in or relating to battery covers
IPC: H01M50/172
Filed: 1958-10-31
Abstract: 897,140. Moulding inserts in plastic materials. ELECTRIC STORAGE BATTERY CO. Oct. 31, 1958 [Jan. 31, 1958], No. 34972/58. Class 87(2). [Also in Group XXXVI]. A liquid-tight seal between a storage battery post bushing and a battery cover is provided by surrounding the bushing with a compressible material such as soft rubber and then moulding plastic material e.g. hard rubber under pressure around the insert to compress said material and form the battery cores. A ring of soft rubber is fitted between the flanges 2 and 3 of a lead casting 1 forming a bushing in a lead-acid battery and the bushing is placed in a cover mould. A hard rubber cover 5 is then moulded around the bushing under high pressure and the ring of soft rubber is compressed. This compression is maintained when the cover and ring are cured and the boundary between the two members becomes indefinite.
Patent GB-889796-A (GB)
Title: Spark ignition apparatus for internal combustion engines
Inventor: ROBERTS MALDWYN HUGH
IPC: F02P9/00
Filed: 1957-11-11
Abstract: 889,796. Induction coils. LUCAS (INDUSTRIES) Ltd., JOSEPH. Nov. 7, 1958 [Nov. 11, 1957], No. 35031/57. Class 38 (2). [Also in Group XXVII] An ignition coil comprises a primary winding b, a secondary winding d, a pilot winding e, and a control winding f all mounted on an iron core a, the function of the pilot winding being to effect excitation of the control winding by an intermittent current supplied through an interrupter and the function of the control winding being to control a transistor through which energizing current is supplied to the primary winding. The number of turns for the windings is specified (see also Group XXVII).
Patent GB-1338897-A (GB)
Title: Automatic weapon with self locking bolt breech block
IPC: F41A9/37
Filed: 1971-07-27
Abstract: 1338897 Machine guns RHEINMETALL GmbH 27 July 1971 [11 Sept 1970] 35073/71 Heading F3C An automatic weapon has a slidable selflocking breech block 2 which inserts a cartridge 8 into a chamber 3 during its forward movement, the breech block then being locked to the casing of the weapon by three laterally pivotable locking bolts 6, 6<SP>1</SP>, 6<SP>1</SP>. The latter are mounted symmetrically relative to the longitudinal axis of the breech block, the bolt 6 being in the vertical longitudinal central plane. The breech block 2 comprises a head 4 having semi-cylindrical support faces 7 on which the bolts pivot, and a body 5 having inclined faces 9 which, after the head 4 has reached its forward position and a cartridge 8 is in the chamber 3, tilt the bolts so that they enter recesses 10 provided in a casing 1 of the weapon as shown in Fig. 1. The casing 1 has faces 11, 11<SP>1</SP>, 11<SP>1</SP>, Fig. 3, which guide the breech block and is provided with openings 12, 12<SP>1</SP> through which cartridges are supplied via magazines 13, 13<SP>1</SP>. A cartridge case ejector claw v 15, Fig. 1, is provided and moves radially against the force of a spring 16 located in a groove in the breech head 4.
Patent GB-1515271-A (GB)
Title: Variable-speed gear transmission
IPC: B60K17/344
Filed: 1974-08-09
Abstract: 1515271 Change-speed gear NEWAGE ENGINEERS Ltd 8 Aug 1975 [9 Aug 1974] 35204/74 Heading F2D In a two-speed transmission suitable for a four-wheel-drive vehicle an internally splined selector sleeve 22 is movable to couple an input 15 to two coaxial outputs 12, 13 at either of two ratios or to one only of the outputs at one of the two ratios. When the sleeve is positioned as shown to couple splines 12A, 13A on the output shafts to teeth 19A of a gear-wheel 19 low ratio is established through the train 16, 17, 18, 19, and when the sleeve is displaced leftwardly to bridge teeth 20A and the splines 12A, 13A high-ratio is established through the train 16, 17, 20. Further leftward movement of the sleeve releases the splines 12A so that the shaft 13 only is driven at high ratio. The sleeve may also be set at a neutral position in which it engages only the splines 12A, 13A. To provide alternative ratios a second input shaft may be provided with a pinion in permanent mesh with either the wheel 17 or the pinion 18.
Patent GB-1077400-A (GB)
Title: Alloys and capacitors produced therefrom
IPC: H01G9/04
Filed: 1965-08-17
Abstract: An electrode for a capacitor is formed from an alloy consisting of 28-65% by weight of niobium, 10 to 50% by weight of titanium, 20 to 52% by weight of zirconium and less than 0.2% of impurities. The niobium may contain small amounts of tantalum and the zirconium may contain up to 2.3% of hafnium.  Tolerable impurities include up to 700 ppm of oxygen, up to 500 ppm of silicon and up to 500 ppm iron. The alloy material is formed by conventional methods into foils, sheets, wires or sintered porous bodies.  In the manufacture of an electrolytic capacitor, the electrode material, optionally etched, has an anodic oxide film formed using standard techniques.
Patent GB-600540-A (GB)
Title: Hair-drying apparatus
IPC: A45D20/00
Filed: 1945-12-31
Abstract: 600,540. Hair-dryers. HANSEN, P. F. Dec. 31, 1945, No. 35303. Convention date, Feb. 21, 1942. [Class 81(ii)] Hair-drying apparatus for insertion into the hair is provided with cooling-air admission tubes 3, with perforated walls, and mounted on holder 1, formed to the shape of the skull; air inlet is through pipe 4. Another holder 2, also formed to the shape of the skull carries heat conducting members 7; this holder may be heated either by electric element 8 mounted on the inlet pipe 4 by insulating connector 9, or by steam, hot air, or the like heating means passing through passage 10. The heating members, which are not in heat conducting connection with the admission tubes 3, extend along these tubes and are so placed in relation to them that the cooling air sweeps round, and is heated by, the heating members, which may be hollow and provided with additional heating means.
Patent GB-330211-A (GB)
Title: Improvements in and relating to volume control means for radio receivers and the like
IPC: H03G3/16
Filed: 1929-11-19
Abstract: 330,211. British Thomson-Houston Co., Ltd., (Assignees of Bradbury, B.). Nov. 19, 1928, [Convention date]. Thermionic amplifiers.-A volume control for a tuned radio frequency amplifier comprises a coupling circuit including a tuned section and a coupling section, a resistance connected between the two being arranged simultaneously to vary the voltage applied to the coupling section and the resistance of the tuned section so as to maintain constant selectivity of the circuit. The tuned section of the coupling circuit 23 includes the secondary 24 of transformer 10 and condenser 25 and is virtually in series with the variable resistance 28. The coupling section comprises a coil 27 of few turns, connected to the resistance contact arm 30, movement of which increases or decreases the input to the next valve 6. As the resistance across the coil 27 is decreased, the selectivity tends to increase, but the remainder of the resistance is thereby inserted in the tuned circuit, thus broadening the tuning and the two effects counteract each other. The contact arm 30 is mechanically linked with an arm 20 on a second resistance 19 arranged as a volume control across the aerial input.
Patent GB-890719-A (GB)
Title: Improvements in or relating to a spreader for granular or powdery material
IPC: A01C17/00
Filed: 1958-04-08
Abstract: The subject-matter of this Specification is included in that of Specification 890,712 but the claims differ.  Specifications 890,711, 890,714, 890,715, 890,716 and 890,717 also are referred to.
Patent GB-786207-A (GB)
Title: Improvements in or relating to process of preparing carbonaceous material
IPC: C01B32/336
Filed: 1955-12-09
Abstract: 786,207. Coking. GREAT LAKES CARBON CORPORATION. Dec. 9, 1955 [April 18, 1955], No. 35486/55. Class 55 (1). Carbonaceous material, suitable as a filter aid, is produced by heat treatment of a bituminous material which is solid at ordinary temperatures and expands and becomes plastic on heating. The bituminous material is finely ground and is first subjected to a flash-calcination in an atmosphere containing oxygen in such amount that at least 10 per cent of the evolved combustible volatiles remain unburned. The solids are then separated from the gaseous and vaporous products at a temperature not less than that required to maintain substantially all the vaporous products in the vapour state, and, finally, the solids are heated to remove residual volatile matter remaining on the surfaces of the particles. Pulverulent bituminous coal is fed into a pressurized hopper 12 having a rotary agitator 13 and a feed screw 14 which delivers the coal to an entraining airstream for delivery to the top of the flash-calcination chamber 15. By " flash-calcination " is meant a very rapid upheat rate, i.e. in excess of 2000‹ F. at the surfaces of the particles, in a chamber, i.e. the chamber 15, maintained at a temperature sufficient to ignite the particles. A temperature in excess of 1150‹ F., and preferably between 1350‹ and 1650‹ F., is mentioned. A blower 24 supplies air through valves 27, 28. The gaseous and vaporous products are conveyed from the chamber 15 to the cyclone 16, the separated gases and vapours passing to a combustion chamber 26 supplied with air by a blower 25. The solids for the cyclone 16, which is maintained under pressure by a valve 30, are entrained in air from the blower 24 and passed to a chamber 17 supplied with secondary air at 33 to maintain the temperature at 1300-2300‹ F. The products are passed through a cyclone 18, the separated gases being scrubbed at 19. A blower 22 maintains a negative pressure in the chamber 17, and sludge from the scrubber is collected at 20. The final filter aid material is passed through a valve 34 into a drum 21. The plant is brought initially to operating temperatures by. auxiliary burners in the chambers 15, 17 supplied with fuel gas by a blower 23.
Patent GB-930499-A (GB)
Title: Improvements in or relating to catalytic decomposition of hydrazine
IPC: B01J37/02
Filed: 1959-10-20
Abstract: Hydrazine is decomposed into hydrogen, nitrogen and ammonia in the presence of one or more of rhodium, iridium, ruthenium and palladium, as catalyst.  Platinum may also be present.  The catalyst may be supported or unsupported.  Catalyst supports specified are carbon, alumina, silica, silica-alumina, titania, zirconia and asbestos.  The catalyst may constitute 0,01-50%, preferably 0,3-30% of the weight of catalyst plus support.  The hydrazine may be in the liquid or gaseous state and may be in aqueous solution.  The initial reaction temperature may be 0 DEG -250 DEG C., preferably 0 DEG -50 DEG C. The reaction pressure may be up to 750 p.s.i.g., preferably 100-750 p.s.i.g.  The process may be batch-wise or continuous.  The space velocity may be 100-1,000,000, preferably 1,000-10,000lbs. of hydrazine per hour per lb. of catalyst.  Examples are given.