baber/WOPTO huggingface dataset:
Patent GB-834268-A (GB)
Title: Improvements in hearing aid apparatus
IPC: G02C11/06
Filed: 1956-10-02
Abstract: 834,268. Hearing aids. AMERICAN DANISH OTICON CORPORATION. Oct. 2, 1956 [Nov. 25, 1955; May 31, 1956; July 7, 1956], No. 29939/56. Class 40 (4). [Also in Group XX] A hollow arm 26 of a spectacle frame encases a hearing aid set and is fitted telescopically to a stub 22 on a short arm 20 hinged at 14 to the front of the frame. The length of the arm may be adjusted by cutting off a portion of the arm 26 adjacent the stub 22. The battery 28, microphone 32, receiver 34 and volume control 40 are arranged as shown in Fig. 2. A receiver described in Specification 746,773 is encased in the metal or thermoplastic material of the arm and has a single outlet giving access only to the ear tube 36. This arrangement is stated to be sufficient to avoid acoustic reaction. The arm may be secured to the stub by adhesive or may be releasably secured by means of a spring-pressed ball 120 and socket 122, Fig. 4, by a spring 124 and slot 126, Fig. 5, or by friction, a rubber band 128, Fig. 6, being fitted to the stub. If only one arm includes a hearing aid, it is balanced by an arm of the same weight and shape.
Patent GB-1220502-A (GB)
Title: 3,5 - dimethoxy - 2,4,6,2<1>,4<1>,6<1> - hexanitrodiphenylamine and its alkali and alkaline earth metal salts
IPC: C01D17/00
Filed: 1968-01-10
Abstract: 1,220,502. Diphenylamine derivatives. AMERICAN METAL CLIMAX Inc. 10 Jan., 1968 [1 Feb., 1967], No. 29939/70. Divided out of 1,220,501. Heading C2C. 3,5 - Dimethoxy - 2,4,6,2<SP>1</SP>,4<SP>1</SP>,6<SP>1</SP> -  hexanitrodiphenylamine is claimed per se. The compound is prepared by reacting picryl chloride with an equal quantity of 3,5-dimethoxy aniline to form 3,5 - dimethoxy - 2,4,6 - trinitrodiphenylamine. This intermediate is dissolved in acetic anhydride and nitrated with HNO 3  to form two isomers 3,5 - dimethoxy - 2,6,2<SP>1</SP>,4<SP>1</SP>,6<SP>1</SP> - pentanitrodiphenylamine and 3,5-dimethoxy-2,4,21,41,61- pentanitrodiphenylamine. The latter isomer is further nitrated with nitric acid to form the claimed product.
Patent GB-158223-A (GB)
Title: Improvement in submarine vessels
IPC: B63G8/36
Filed: 1920-10-22
Abstract: 158,223. Electric Boat Co., (Assignees of Doane, L. B.). Jan. 24, 1920, [Convention date]. Submarine vessels.-In a submarine vessel the exhaust passage 11 of the internal combustion engine is closed, for submerging, by a valve 14 disposed outside the hull between the silencer 10 and the exhaust passage. The valve is carried by an arm 15 mounted on a shaft 26 and is counterbalanced by a weight 18. In opening, the valve passes through the open bottom of the casing 12 and is submerged in water in a tank 19, as shown in dotted lines, where it is protected from the exhaust gases and waste matter. In position the casing 12 is closed at the bottom by a cover or shield 20 which is mounted on an arm 21 on a shaft 22 and is interconnected with the valve shaft 26 by links and cranks so as to lift for the passage of the valve 14. A quick closing movement of the valve to its seat is given by a handle 33 operating through bevel gearing 30, 29, 27, 28 a slow and powerful final closing movement is then given by a hand-wheel 42 operating through a worm and worm-wheel 41, 37 and the bevel gearing 27 - - 30.
Patent GB-773135-A (GB)
Title: Saturable reactor control for a polyphase motor
IPC: H02P1/26
Filed: 1955-10-20
Abstract: 773,135. Control of A.C. motors. SQUARE, D., CO. Oct. 20, 1955 [Nov. 22, 1954], No. 29964/55. Class 38(3) [Also in Group XXXIX]  A squirrel-cage induction motor 10 is started in the forward direction by actuating push-button 21 to close contacts 21A and energize relay coil 30. The motor is placed across the power supply lines L1, L2, L3, with the parallel-connected output windings A-A, B-B, of a saturable reactor in series with the line L2 and motor terminal T2 so that the motor is supplied with unbalanced voltage to limit the starting torque. Further depression of the pushbutton closes contacts 23A which energize the control winding C-C of the saturable reactor through bridge rectifier 20 and series resistor 50, causing partial. saturation of the reactor and an increase of torque. The push-button, is then actuated to close contacts. 25A, 27A, which shortcircuit successive parts of, the resistor 50 until the reactor is fully saturated and the motor voltage approaches a balanced condition. Finally, closure of contacts 29A energizes relay coil 60 whereby contacts 62 close to short-circuit the windings A-A, B-B, and contacts 61 open the circuit of the winding C-C. After release of the pushbutton 21, the motor may be operated in the reverse direction by closure of an interlocked push-button 22 to energize relay coil 40. Subsequent operation is similar to that described for forward running. A timedelay effect during starting is obtained by transient current circulating in the loop circuit formed by windings A-A, B-B, and induced by changes in the control current flowing through windings C-C. This retards change in the saturating flux and reduces the value of peak currents to afford a cushioning effect. The saturable reactor comprises a core having three legs, the alternating-current output windings being wound on the outer legs, and the directcurrent control winding on the centre-leg (Fig. 2, not shown).
Patent GB-801382-A (GB)
Title: Improvements in or relating to production of uranium tetrafluoride
Inventor: MARTIN FREDERICK SAMUEL
IPC: C01G43/06
Filed: 1952-11-26
Abstract: Uranium tetrafluoride is prepared by reacting uranium hexafluoride with an organic compound which is capable of being fluorinated. Preferred organic compounds are liquid at ordinary temperature and are preferably unsaturated partially chlorinated hydrocarbons or partially chlorofluorinated hydrocarbons.  The organic compounds may be diluted with organic solvents inert to the reaction components, for example carbon tetrachloride or highly fluorinated organic solvents.  According to an example, uranium hexafluoride vapour was passed into dry trichlorethylene and the resultant suspension was filtered to recover the uranium tetrachloride which was steam distilled and dried in hydrogen. Hexachlorpropylene may be similarly employed.  Uranium dioxide may be obtained by mixing the filtered uranium tetrafluoride with excess ammonium carbonate, heating in the presence of water, followed by steam distillation and drying in hydrogen.
Patent GB-642689-A (GB)
Title: Improvements relating to reaction motors suitable for the jet propulsion of model aircraft or the like
IPC: F02K9/38
Filed: 1947-11-11
Abstract: 642,689. Rocket motors. WILMOT, MANSOUR, & CO., Ltd., WILMOT, C. M., and MANSOUR, J. N. Nov. 11, 1947, No. 30022. [Class 9 (ii)] A reaction motor for propelling model aircraft comprises a casing for a gas-generating charge in which a spring-pressed member containing one or more jet orifices is movable relatively to the casing to allow the combustion gases to escape past it if abnormal pressure builds up in the casing. The motor 3 comprises a cylindrical casing 5 of aluminium closed at the front end 6 and enclosing a solid gas-generating charge 7 with an igniting wick 8 led through a wire gauze disc 9 and a jet member 11 in a removable end cap 10. The end cap comprises an outer plate 12 separated from a backing plate 13 by an annular asbestos washer 14 and held together by the jet member which is screwed into a boss 15 on the outer plate. Wire rods 16 bent into an annular groove 18 in the plate 12 hold the cap in position. These rods pass through holes in a front plate 20 fitting over a boss 21 projecting from the end 6. The rods carry anchorage members 22 against which abut springs 25. The boss 21 has a threaded bore to receive the end of a bolt in a model aircraft. To insert a charge the end cap 10 is removed by applying pressure to the anchorage members. When the charge is ignited combustion gases escape through the jet member. Should the pressure become excessive the end cap moves rearwardly against the action of the springs to allow the gases to escape between the cap and the casing. To prevent overheating of the surface of the charge the casing wall is thickened towards the rear or provided with fins. A model aircraft, vehicle or vessel may be provided with a metal clip in which the motor is placed so that two of the anchorage members 22 enter a channel in the clip and the boss 15 drops into a slot in an upturned lug. Alternatively a lug secured to the boss 21 may enter a slot in the body of the craft, or again the motor may be simply inserted in a socket. Air passages for cooling purposes are left between the wall of the socket and the motor. In a modification, the nozzle or jet member has a cup-like extension and is held in position within an extension of the casing by a spring which yields to allow the nozzle to move outwardly under excess pressure.
Patent GB-1182033-A (GB)
Title: Method of and device for mixing and dispersing gas and liquid
Inventor: KARPACHEVA SUSANNA MIKHAILVNA
IPC: B01F11/00
Filed: 1968-06-25
Abstract: 1,182,033. Dispersing gases in liquids; mixing and agitating liquids. S. M. KARPACHEVA, V. M. MURATOV, L. S. RAGINSKY, V. A. CHERNOV and O. A. KHROKALO. 25 June, 1968, No. 30137/68. Heading B1C. A gas may be dispersed in a liquid by reciprocating a column of the liquid with a surface in contact with the gas, in such a way that the area of the surface is continuously changed during the reciprocation, whereby splashing of the liquid and entrainment of the gas therein takes place. As shown liquid in the stepped cavity 5 is reciprocated by the pulsator 4 acting on the gas B which is in contact with the liquid at D; the portion of liquid so aerated is mixed with that in the reservoir 1 by passage to and fro through the nozzles 8. In modifications, the pulsator 4 may act on the liquid in the reservoir directly or through an intermediate gas (L, Fig. 1 not shown); the cavity 5 may communicate with the reservoir 1 through a perforated distributing partition (9, Fig. 3 not shown); and the aerating vessel may be of uniform cross-section but contain a displacer of stepped crosssection (6, Fig. 4 not shown).
Patent GB-656507-A (GB)
Title: Textile dyeing
IPC: D06P1/12
Filed: 1948-11-19
Abstract: Textile fibres are treated with an aqueous solution of a water-soluble organic dyestuff containing a nitro group in an aromatic nucleus and the dyestuff is then reduced on the fibre to convert the nitro group into an azoxy group, e.g. by means of a hot alkaline solution of a reducing sugar or an arsenite.  The original dyestuff may be an azo dyestuff or a dyestuff of the anthraquinone series containing a nitro group.  If the azoxy dyestuff on the fibre contains an aromatic amino group, it may be diazotized and coupled with a suitable coupling component; similarly, if the azoxy dyestuff can act as a coupling component it may be coupled on the fibre with a diazotized aromatic amine. Other aftertreatments, e.g. treatment with an aldehyde or a metal salt, may also be applied.  In example (1), cotton yarn is immersed in a solution containing the dyestuff 4-nitroaniline-2-sulphonic acid -->2 - amino - 8 - naphthol - 6 - sulphonic acid and also sodium carbonate, heated to 70 DEG  C. and an aqueous solution of glucose then added.  In other examples, the dyestuff is replaced by (2) p - nitroaniline-->2 - benzoylamido - 5-naphthol-7-sulphonic acid; (3) aniline-->2-p-nitrobenzoylamino - 5 - naphthol - 7 - sulphonic acid; (4) p-nitroaniline-->silicylic acid; (5) 4 - nitroaniline - 2 - sulphonic acid-->cresidine and (6) p-nitroaniline-->cresidine. The resulting dyestuff of (5) can be diazotized on the fibre and coupled with b -naphthol.
Patent GB-754810-A (GB)
Title: Improvements in or relating to apparatus for coating the internal surfaces of hollow bodies with adhesive or other substances
Inventor: GEE HERBERT LEONARD
IPC: B05C7/02
Filed: 1954-10-20
Abstract: <PICT:0754810/III/1> Apparatus for coating the internal surfaces of hollow bodies with adhesive or other substance comprises an open tank or container for the substance to be applied and which rotates an applicator dipping into the substance which is discharged as a spray from its upper edge.  A rotary applicator g in the form of an inverted truncated cone is mounted by vanes g1 on a shaft d rotatably mounted between lugs of a bifurcated bracket a.  The applicator rotates in a container e mounted on the bracket and supplied with liquid from a container h through an inlet e1.  A cover k with apertures k1 is mounted on shoulders on inwardly sloping sides of the container.  The liquid ascends the sides of the applicator and is discharged from the upper edge and emerges as a spray through the apertures k1 on to the inner surface of a carton or cup.  The carton or cup may be lowered over the applicator or the applicator raised within the carton or cup. The applicator surface may have grooves and the upper rim have a sharp edge or projecting points.  An external flange g3 below the rim may intercept the liquid and baffles e4 may be provided in the tank or container.  The liquid in the container h is maintained at constant level by any suitable means.
Patent GB-622246-A (GB)
Title: Improvements in and relating to caterers' boilers, coffee-making apparatus and the like
IPC: A47J31/30
Filed: 1946-10-09
Abstract: 622,246. Infusing-machines. CONTI, S. Oct. 9, 1946, No. 30155. [Class 129] In an infusing-machine of the type in which each percolator is connected to the boiler by a dual conduit through which water or steam, selected by a valve, can be supplied to the percolator, the valve casing forms part of a cover detachably connected to the percolator. Tubes 50 and 51, Fig. 2, communicate respectively with the water space and the steam space of the boiler 7, and are connected by separate passages 39, 40 within a conduit 37 to further passages 42, 43, Fig. 4, within a valve body 41. A valve 46 can be turned to bring either of passages 42, 43 into communication with a central passage 47 by way of a U-shaped passage 49, so that either hot water or steam is admitted, by way of a perforated spreader 61, to the percolator 57. The container 54 for the infusion is attached to the holder 52 by a coarse-pitch thread 56 and comprises a gauge glass 66 having a vent valve 65 and an outlet cock 64. The water level in the boiler is controlled by a float valve 24 in which a sliding member 32, Fig. 5, co-operates with a seating 35. The heating of the gas ring 12 is preferably thermostatically controlled in accordance with the temperature in the boiler. The top of the boiler may support hobs for teapots or the like, which may be heated by steam jets. An outlet 21 for the external supply of steam may be connected to an immersion heater for heating milk or the like and comprising a conduit the free end of which has a detachable hollow closed cylindrical nozzle having a number of fine holes. According to the Provisional Specification, the nozzle is surrounded by a cylindrical hood whereby it is spaced from the bottom of the vessel in which it is immersed.
Patent GB-779274-A (GB)
Title: Frequency responsive circuit arrangements
Inventor: GRISDALE GEORGE LAMBERT
IPC: H03L7/02
Filed: 1954-10-20
Abstract: 779,274. Automatic frequency control systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. July 13, 1955 [Oct. 20, 1954], No. 30178/54. Class 38 (4). The sense of the frequency error of an oscillation applied to energize a resonator 4 is detected over a wide frequency error range by using the reversal of phase of the output of the oscillation from the resonator 4 for frequencies on either side of the resonance frequency. To this end the resonator output may be applied through a limiter 12 to a phase reversing switch 5 operated through a phase adjuster 6 by a low-frequency source 8, and the output of the phase reverser 5 additively continued with a larger amplitude of the original oscillation derived through an amplifier 3 and phase adjuster 2 so that both oscillations are in phase and anti-phase alternately and the summation detected at 7 is of same frequency as the switching source 8. Further, the switching source 8 may act through a phase adjuster 6 so that the outputs of detector 7 and the source 8 are in phase quadrature and reversibly control a two-phase motor 9 controlling the frequency of the oscillation. The resonator 4 may be a series resonant piezo electric crystal shunting the oscillation path, or of magneto-strictive type. The phase reverser 5 may be a conventional circuit of two pentodes with common anode and cathode circuits, the input oscillation being applied to the grid of one of the pentodes, and the suppressor grids being energized in push-pull by the switching lowfrequency. The controlled oscillation may be the mark frequency of a frequency shift telegraph system, the limiter 12 being arranged to be biased to cut-off by the apparatus when on " space."
Patent GB-393839-A (GB)
Title: Improvements in or relating to steering gears for motor vehicles
IPC: B62D3/08
Filed: 1932-10-28
Abstract: 393,839. Motor-vehicle screw-and-nut steering-gear. HOLROYD & CO., Ltd., J. and GARTSIDE, V., Harbour Lane, Milnrow, near Rochdale. Oct. 28, 1932, No. 30229. [Class 79 (v).]' Screw-and-nut steering-gear which can be adjusted for wear by a single means operated from outside the gear casing comprises a screw 3, Figs. 1-3, a nut 8 having a groove 9 with tapered sides 11, 12, a slide block or blocks 13 fitting the sides of the groove, a conical pivot pin or pins 15 engaging a conical hole in the block or blocks and fixed to the rocker arm or arms 7 on the rocker shaft 6 which is to be operated, and means such as a set screw 16 for displacing the arm, pin, block and nut in a lateral direction to take up wear. When the set screw is tightened all the parts are moved laterally until all wear is taken up and the nut bears against a face 10 of the gear casing 1. If wear is to be taken up between the nut and the screw, the latter is provided with a V-thread and the nut is formed in two parts having a tongue-andgroove engagement, so that when the set screw 16 is adjusted the two parts of the nut are brought together on to the screw. Instead of the set screw 16 for adjustment purposes a wedge may be employed having one face bearing against the arm 7 and an inclined face bearing against a corresponding face on the casing, the wedge being adjusted endwise by screws. In the construction shown in Fig. 7, the screw 37 is engaged by a two-part nut 38 having grooves 41 for slidable blocks 42 engaged by conical pins 43 carried by arms 36, 34, the arm 36 being fixed on the rocker shaft 32 and the arm 34 being slidably but non-rotatably connected thereto by splines 35. In order to take up wear, a nut 45 screwed on the shaft 32 bears against a boss 33 of the arm 34 and when this nut is tightened all the parts are drawn together by the arms 34, 36 and wear is taken up.
Patent GB-641738-A (GB)
Title: Improvements in or relating to the separation of iron and titanium compounds from ores containing iron and titanium
IPC: C22B1/14
Filed: 1947-11-13
Abstract: In a method of producing iron and a titanium concentrate from an ore containing iron and titanium, 50 to 80 per cent of the iron compounds are converted to iron by dry reduction, the reduced material concentrated by magnetic separation and the concentrate smelted to produce metallic iron and a titanium containing slag. The ore may be reduced without sintering in a rotary kiln of the type described in Specification 636,677 using coke breeze as the reducing agent, or the reduction may be performed by a gaseous reagent, and, after wet magnetic separation, the concentrate, which has low S and P content, may be smelted in a furnace with anthracite or wood charcoal as reducing agent and the addition of sodium carbonate or lime to produce molten iron and a titanium slag which is soluble in acids. The amount of reducing agent used in the smelting may be just enough to reduce the iron to metal or slightly less than that amount, the latter case resulting in the formation of ilmenite (Feo TiO2) in the slag.
Patent GB-723290-A (GB)
Title: Improvements in or relating to barrels or drums
Inventor: MILLERSHIP JOHN FREDERICK
IPC: B65D8/08
Filed: 1952-12-01
Abstract: 723,290. Metal barrels. LONDON ALUMINIUM CO., Ltd. Nov. 30, 1953 [Dec. 1, 1952], No. 30335/52. Class 66. A metal barrel comprising two cup-shaped parts 7 secured together at their abutting edges is provided with swagings 8 formed part of the way around the periphery of each part 7 adjacent to the abutting edges and with a filler opening 10 formed half in one part 7 and half in the other part and with a plate 11 having an aperture 9 located around the filling opening, the plate 11 being located between the termination of the two ends of the swagings and having ribs 12 formed on the outer side to form a continuation of the swagings.
Patent GB-930816-A (GB)
Title: Screw-tightening tool
IPC: B25B21/02
Filed: 1961-08-23
Abstract: 930,816. Screwing-up machine. FORGES ET ATELIERS DE MEUDON. Aug. 23, 1961 [Sept. 1, 1960], No. 30386/61. Class 83 (3). [Also in group XXIV] A screwing-up tool comprises hammers 20, 21 mounted for radial sliding movement between side members 29 of a driving member 19 and carrying two guide rollers 26 engaging cam apertures 28 in the side members. The tool has a pneumatic motor 15 which can be reversed by a knob 16. The hammers carry dogs 22, 23 respectively engaging dogs 34, 35 on the tool driving member 30, 32. In operation, the hammers move outwardly under the centrifugal action of the rotating masses and cause rotation of the tool. When rotation is resisted, the hammers are moved inwardly by the cams 28 until they are released for continued rotation. In a modification, two blows per revolution, instead of one, are given, the single blow of the illustrated embodiment being due to the positioning of the single dog 22 in the circumferential space between the twin dogs 23.
Patent GB-1435460-A (GB)
Title: Process for making high strength cold-rolled steel with good bake-hardening properties
IPC: C21D9/52
Filed: 1974-07-10
Abstract: 1435460 Heat-treating steel sheet NIPPON KOKAN KK 10 July 1974 [12 July 1973] 30470/74 Heading C7A Steel strip containing is hot rolled to finish above 800C followed by coiling at less than 700C and is then continuously and fully annealed by heating to 700-900C for 10 to 120 seconds, followed by quenching with water jets. The strip is finally re-heated to 150-400C for 2 to 300 seconds, the time and temperature lying within the area ABCDEFGHIJ of the drawing whereby the previously dissolved carbon is partially but not completely precipitated. Silicon and aluminium may be present in the steel up to 0.2% and 0.02% respectively.
Patent GB-244101-A (GB)
Title: Apparatus for the horizontal adjustment of the tool of wood grinding and polishing machines with respect to the surface of the work
IPC: B24B7/22
Filed: 1925-12-02
Abstract: 244,101. Rogers, F. H., (Steingõsser & Co.). Dec. 2, 1925. Flat extended surfaces, surfacing and polishing. -In a machine for grinding and polishing wood, the work c is supported on a table a and is ground &c. by a tool g supported on a frame f movable along the work on rollers e running on runways d. The tool is carried by a frame h movable across the work on rollers i resting on bars k and moved, through a chain &c. m, by operation of a handle s which may be coupled at various positons, by a pin and apertures t, to a spur-wheel q. The spur-wheel q drives a spurwheel p connected to one of the sprockets l supporting the chain, the ends of which are secured to members n on the carriage h. The tool also may be adjustable vertically.