baber/WOPTO huggingface dataset:
Patent GB-1184875-A (GB)
Title: Improvements in Reducing Leakage of Liquids
Inventor: PREVOST EMILE
IPC: C09K3/12
Filed: 1968-05-30
Abstract: 1,184,875. Sealing leaks in pipes. ESSO STANDARD FRANCAISE S.A. 30 May, 1968 [5 June, 1967; 9 April, 1968], No. 26026/68. Heading F2P. [Also in Division E1] In a method of sealing leaks in a water containing structure, e.g. a reservoir or pipe, a high molecular weight, substantially water insoluble, hydrocarbon having sufficient adhesivity to be self-adhesive and to adhere to material forming the said structures, and which is capable of being extruded, or flowed, through an orifice to form a filament, is melted and then extruded, or flowed, through one or more orifices to form filaments of said hydrocarbon, the thus formed filaments being introduced into said water containing structure to be attracted by a seepage of water through a leak, or leaks, in the structure to the position of to seal said leak, or leaks. As shown, filament forming material, 1 formed e.g. of petroleum resins, steam cracking tars, high viscosity bitumens or, coal tar and having a molecular weight of at least 1000, is placed in a container 2 and preferably subjected to heat and pressure to flow, in filament form, preferably of a diameter not exceeding 1À0 mm. e.g. 0À1 mm., through the orifice 4 of a tube 3 made e.g. of a material such as glass, copper or steel. In an arrangement, Figs. 2a, 2b, not shown, a distributer (6) with a row of nozzles (9) has a heater pipe (8) carrying a hot fluid, e.g. steam or hot oil, and, in order to facilitate the descent of the filaments to the bottom e.g. of a reservoir, a Venturi (14), Fig. 3, not shown, may be employed. In a modification, Fig. 4, filament forming material in a container 21 is fed to distributers 22 which deliver filaments 27 to a ramp 24 which has jets of water 30 delivered to it by means of a pump 32, a conduit 31, and a distributer 26, the filaments being cut to the desired length by a laterally traversable blowpipe, or torch 33. The slope of the ramp 24 can be adjusted by a movable rest 28, and each distributer 22, and its feed conduit 23, is heated by a pipe (34), Figs. 5a, 5b, not shown, which carry e.g. hot oil, the orifices (36) of the distributers each being of triangular cross-sectional shape and adjustable in size by means of a shutter (37), Fig. 6, not shown. In a further modification, Fig. 8, not shown, the material in a lagged container (41), feed pipes (35), and distributers (22), is heated by hot liquid, e.g. oil regulated by a thermostat 48, in a closed pipe system (34) having a circulating pump (47) and a reservoir (45), the material in the container (41) being circulated by a pump (44) and pipes (43). The pumps (44), (47) may be powered by an electric generating unit (49). An independent installation for producing filaments may be installed on a boat, Fig. 9, not shown. The filaments preferably have a diameter ranging from 0À02 to 1À0 mm. and may be provided with a longitudinal core e.g. of plastics or glass fibre.
Patent GB-371272-A (GB)
Title: Improvements relating to the manufacture of refractory blocks
Filed: 1931-09-17
Abstract: Refractory blocks, particularly for use in glass furnaces, are made by fusing in an electric furnace, quicklime (free from magnesia) with silica in such proportions that the resultant compounds approximates to CaO.SiO2 (Wollastonite).  The fixed material is poured into a mould, and when a crust has formed, annealed in a bed of material such as kieselguhr.  An admixture of up to 5 per cent of fluorspar may be made to the mix to assist crystallization.
Patent GB-888830-A (GB)
Title: Flange for multiple bobbins
IPC: B65H75/22
Filed: 1960-07-27
Abstract: 888,830. Bobbins. AYMERICH, J. C. July 27, 1960 [Aug. 21, 1959], No. 26143/60. Class 120(3) When the winding of slubbings 6 into a multiple bobbin reaches a stage beyond which there is risk of disturbance of unsupported side convolutions, at each end of the bobbin an annular plate or flange 7 is passed by means of a radial aperture 8 over the shaft 4 between supporting guide 3 and the end of the bobbin until it is coaxial with the core 5 and is then positioned so that adjustably anchored resilient elements, e.g. springs 10, flat springs or resilient cords, embrace the core (occupying recesses 9 if necessary) and detachably secure the flange thereon. In the modification shown in Fig. 4, disproportion between flange 7 and core 5<SP>1</SP> is overcome by addition of spring 10<SP>1</SP> and adjusted anchorage of springs 10.
Patent GB-532780-A (GB)
Title: Improvements in or relating to manufacture of glazed ceramic bodies
IPC: B28B11/04
Filed: 1939-09-20
Abstract: 532,780. Glass manufacture ; artificial stone. GARBISCH, N. S. Sept. 20. 1939, No. 26217. Convention date, Nov. 29, 1938. [Class 56] [Also in Group V] Waste sand from the grinding and polishing of plate glass is formed into glazed ceramic bodies, such as tiles, by heating the material to a temperature above the sintering-point of the glass but below the point of complete fusion, pressing the softened material to form coherent ceramic bodies, applying a coating of glaze to the bodies while they are still hot, and then annealing the glazed bodies. Specification 529,930 is referred to. The material is pressed in moulds 21, Fig. 1, supported on an annular platform 20 which is rotated step-by-step by a fluid-pressure cylinder 26 and carries the moulds through a tunnel kiln 33. Before entering the tunnel, a mould is filled with waste sand by the shoot 32 of a feeding- device, the sand being either in a loose state or formed into briquettes with a binder such as tar or water glass. When the mould emerges from the tunnel 33, the hot sintered material is pressed in the mould by the plunger 39, Fig. 3, of a fluid-operated press 37. After pressing, the mould moves to a position in front of a tunnel kiln 51, and during the movement the mould bottom 22 is raised by a fixed cam 35. The pressed article 41 is pushed off the mould bottom into the kiln 51 by a fluid-pressure cylinder 43 and comes to rest on a conveyer 48. The article is carried on to a grid 53, Fig. 1, where powdered glaze is shaken on to it from a supply hopper. The coated article is then carried through another tunnel kiln 77 where the glaze is fused and the glazed article is allowed to anneal. In a modification, briquettes of the material are fed through a preheating furnace to a single mould in which the sintered material is compacted by a press. The pressed article may be heated again if necessary, and is glazed and annealed as before. A suitable glaze is composed of 32 parts by weight of silica, 6.0 parts of saltpeter, 7.5 parts of soda ash, 9.5 parts of borax, 39.5 parts of red lead, and 5.5 parts of colouring matter.
Patent GB-403426-A (GB)
Title: Improvements in or relating to magnetic cores for high frequency inductance coils and transformers
IPC: H01F41/02
Filed: 1932-03-16
Abstract: 403,426. Main inductances. JOHNSON LABORATORIES, Inc., 609, West Lake Street, Chicago, U.S.A.-(Assignees of Polydoroff, W. J. ; 420, Fullerton Parkway, Chicago, U.S.A.) March 16, 1932, No. 26229/33. Convention date, March 16, 1931. Divided on 403,368. [Class 37.] A compressed magnetic core for an inductance or transformer for radio frequency circuits is mounted for movement relatively to the coil to vary the inductance, as described in Specification 366,475, and is constructed so that the core losses per unit volume of core material are different for different parts of the core in order to maintain a uniform ratio of inductance to core losses throughout the tuning range. The core is constructed of finely divided magnetic material, the particles of which are insulated from one another so that the core losses at frequencies of 150 to 1500 kilo-cycles are comparable with the copper losses of an air core coil, as described in Specification 403,368. Those parts of the core which first enter the region of maximum magnetic field intensity are so arranged as to have a lower permeability than the portions that enter this region subsequently, in order to compensate for the relatively high losses at the higher frequencies. As shown in Fig. 3, the core may be made of varying density by subjecting separate sections 3, 4, 5 to different pressures. Alternatively the core may be shaped as shown in Fig. 4 so that the section 6 is of smaller diameter than the sections 7, 8. In a modified method of producing a core of variable density, the core is pressed in a mould of such a shape that the pressure is not evenly distributed throughout the core. Such a core is shown in Fig. 5, in which the portions 9, 10 of the centre core, due to frictional losses on the wall of the mould, have a lower density than the portions 11. Alternatively the mould may be charged with two or three different mixtures in which the insulating coatings are of different thicknesses or the particles of magnetic material are of different sizes. In order to facilitate the matching of ganged variable inductances, the core is formed with a cavity 13 to receive a pellet 12, or a quantity of loose insulated powdered material which is sealed in after adjustment. Alternatively a hole may be bored into the core until the core matches the standard.
Patent GB-776331-A (GB)
Title: Improvements in the production of anhydrous alkali metal carbonates in granular form
IPC: C01D7/07
Filed: 1955-09-14
Abstract: <PICT:0776331/III/1> Anhydrous alkali metal carbonates are produced in granular form in a layer of substantially granular alkali metal carbonate, which is fluidized by combustion gases containing carbon dioxide, by continuously or periodically sprinkling or spraying the caustic alkali solution corresponding to the alkali metal carbonate to be produced into the fluidized layer.  Coal, coal dust, coke, fuel, or waste oil, or fuel gas is burnt in furnace 1 with fresh air introduced through pipe 2, heat-exchanger 3 and pipe 4, and the resulting combustion gases containing CO2 pass through grate 6 into fluidized bed 8 of alkali metal carbonate in reactor 7, while caustic alkali solution of 50 per cent or more concentration is sprayed in through nozzle 9.  For K2CO3 the bed should be at 250-400 DEG C. and for Na2CO3 at 300-450 DEG C.  Anhydrous carbonate is withdrawn through 12 to 13a.  Steam and waste gases pass out through separator 10, whenc carbonate dust passes to 13b, and heat-exchanger 3. Alternatively, the bulk of the hot waste gases may be returned to furnace 1 and the remainder used to preheat fresh air for the fuel combustion.  CO2 may be added where the carbon content of the fuel is too low.
Patent GB-503225-A (GB)
Title: Improved process of producing a cement-forming material
IPC: C04B7/32
Filed: 1937-09-28
Abstract: 503,225. Manufacture of iron. FOX, C. S. Sept. 28, 1937, No. 26280. Drawings to Specification. [Class 72] [Also in Group V] Iron is obtained in a two-stage process for the manufacture of aluminous cement. Bauxite, laterite or like alumina and iron-containing material of low silica content is intimately mixed with limestone, chalk or the like in such proportions as will yield an eutectic slag of approximately 49À5 per cent lime, 43À7 per cent alumina, and 6À8 per cent silica. This is briquetted with an aluminous cement to resist crushing and abrasion, and smelted in a blast furnace. The yield of iron may be increased by the addition of iron ore. The slag is run off and fused with adjusting material to give a cement of approximately 42 parts lime, 48 parts alumina, and 7 parts silica.
Patent GB-374726-A (GB)
Title: Improvements in or applicable to trolleys such as are used on railway platforms and such like and also for heavy vehicles
IPC: B62B3/00
Filed: 1931-09-21
Abstract: 374,726. Steering trolleys and other vehicles. MURDOCH, F. T., 29, Ardenlee Parade, Cregagh, Belfast. Sept. 21, 1931, No. 26322. [Class 79 (v).] Comprises means for steering trolleys and heavy vehicles in which front and rear centrallypivoted axles are so connected together that the front axle turns through a greater angle than the rear axle, and preferably through twice as great an angle, either in the same or the opposite direction. In the construction shown in Figs. 1 and 2 the vehicle platform 1 is carried by rubbing plates 5, 6 on turntables 15, 13 of front and rear axles 26, 27. The front turntable is formed with teeth 7 gearing with a wheel 8 carrying a smaller wheel 9 of half the size, the wheel 9 gearing with a pivoted sector 10 connected by links 12 to the rear turntable 13. Thus when the front axle turns through 90‹ clockwise the rear axle turns through 43‹ counterclockwise. In a modification the axles are made to turn in the same direction, either by inserting an idle wheel between the gears 9, 10 or by omitting the gears 8, 9 and making a larger sector 10 gear direct with the teeth 7. In the construction shown in Fig. 9 rings 23, 24 on the front and rear turntables are connected together by two ropes or chains 25, which may be crossed as shown or straight, each rope being secured to the front turntable and adjustably connected at 28 to the rear turntable. In both constructions the ratio of the turning angles of the two axles may be varied by altering the gear ratio or by varying the sizes of the rings 23, 24.
Patent GB-684764-A (GB)
Title: Improvements in or relating to magnetic coating material adapted to be applied to sheet material and magnetic recording sheet material made therefrom
IPC: G11B5/702
Filed: 1949-10-14
Abstract: Acrylic acid esters of alcohols having a chain length of 2-8 carbon atoms such as ethyl acrylate, butyl acrylate, ethylene glycol monoethylether acrylate or octyl acrylate are copolymerized with a monomer selected from vinyl acetate, vinyl chloride, acrylonitrile, styrene and methyl methacrylate.  More than two monomers may be used, e.g. vinylidene chloride, vinyl acetate and ethyl acrylate.  In example 1 an ethyl acrylate-methyl methacrylate copolymer is prepared by introducing ethyl acrylate, methyl methacrylate, benzoyl peroxide and tertiary dodecyl mercaptan into a solution of sodium polyacrylate in water and heating the mixture.  During the heating process sodium alkyl benzene sulphonate is added.  In example 2 a copolymer of n-butyl acrylate and methyl methacrylate is prepared by heating a mixture of n-butyl acrylate, methyl methacrylate, water, sodium alkyl benzene sulphonate, sodium bicarbonate, ammonium persulphate and dodecyl mercaptan and coagulating with a barium chloride solution.
Patent GB-1000543-A (GB)
Title: Improvements relating to delivery valve arrangements of fuel injection pumps
IPC: F02M59/46
Filed: 1964-06-26
Abstract: 1,000,543. Fuel-injection pumps. SULZER BROS. Ltd. June 26, 1964 [June 28, 1963], No. 26568/64. Heading F1A. A delivery valve for a fuel-injection pump comprises a valve member 15 having a constricted by-pass 20, 21, 22 and a valve member 17 having a suck-back flange 23. To prevent drip from the injection nozzle the spring- loading of members 15 and 17 is arranged to cause member 15 to close before member 17 on termination of injection. In a further embodiment the by-pass is provided by a constricted passage through valve member 15.
Patent GB-246927-A (GB)
Title: Improvements in rubber or rubber-like floor coverings
IPC: B29C67/24
Filed: 1924-11-07
Abstract: 246,927. Salmon, A. E. Nov. 7, 1924. Compound sheet materials.-A floor covering consists of a sheet of paper impregnated with bitumen, pitch, tar, colophony, or condensation products, to one or both sides of which is attached a vulcanized rubber sheet by an adhesive.
Patent GB-1390427-A (GB)
Title: Multiplexing arrangements
IPC: H04J3/04
Filed: 1972-06-07
Abstract: 1390427 Multiplex pulse signalling SIEMENS AG 7 June 1972 [29 June 1971] 26645/72 Heading H4L In a time division multiplexing arrangement a plurality of distributers each having an output and a plurality of inputs are connected in series in such a manner that the output of each distributer excepting the last in the series is connected to an input of the succeeding distributer. The distributers may be sequentially controlled in the normal manner or may be "priority controlled", i.e. whenever a signal or group of signals is passed from an input to the output the distributer returns to its initial state. The remaining inputs are connected to measuring instruments which also transmit address signals, the final output being supplied to a data processing installation.
Patent GB-985676-A (GB)
Title: Improvements in and relating to a method of machining a flanging punch and die
Inventor: BUCKLEY KENNETH HIBBERT
IPC: B23H9/12
Filed: 1962-07-11
Abstract: <PICT:0985676/C6-C7/1> A flanging punch and die are made simultaneously by electrochemically machining a single metal blank using an electrolyte and an electrode formed by a thin strip of metal 11, 12 bent to the required peripheral outline.  The strip may be of copper, aluminium or brass and comprises inner and outer parts 11, 12 secured together by a corrugated inner section to provide an electrolyte passageway 13. A cast white metal alloy 16 is used to secure the electrode to a manifold plate 14 which is bolted to the ram 18 of an electrochemical machine.  Both sides of the electrode are coated with insulating material 20 so that only the edges 22 are used for machining.
Patent GB-426208-A (GB)
Title: Improvements in or relating to motion picture cameras
IPC: G03B21/32
Filed: 1933-09-29
Abstract: 426,208. Kinematograph cameras. KODAK, Ltd., Kodak House, Kingsway, London.-(Assignees of Mihalyi, J. ; 333, State Street, Rochester, New York, U.S.A.) Sept. 29, 1933, No. 26819. Convention date, Oct. 1, 1932. [Class 97 (i)] A kinematograph camera comprises a curved gate member and means for feeding the film in an arc of determined curvature past the gate member which bears against and indents with oppositely directed curvature the convex side of the film arc so that the natural resilience of the film arc acting against this curved indentation tends to maintain the film against the surface of the gate member. As shown, the camera comprises a casing 1 with an objective 2 and divided by a plate 3 into mechanism and magazine chambers. A spring motor 6 drives a gear 8 meshing with a gear 9 on a shaft 10 carrying a gear 11 meshing with a gear 12 on a shaft 13 carrying a crank 19 pivoted to a link 18 pivoted to a link 17 carrying a pin 16 carrying a shutter 15 inside an arcuate gate member 14 having two ribs 21. The magazine comprises a casing with a base 22 and outer wall 23 and inner wall 25, the curved gate member 14 bearing against the arc of the film passing across the opening 24. The film F is fed from a spool 26 on a core 27 on a spindle 28, and is wound on spool 29 on a core 30 rotated by a square spindle 31. A sprocket 32 driven by the square spindle 33 carries a gear 34 meshing with a gear 11. A belt 35 passes round a pulley 36 on the spindle 33 and round a pulley 37 on the spindle 31. In the inner wall 25 are recesses 38, 39. A spring-biassed trigger 40 carries a claw 44 passing through an aperture 45 in the plate 3 and a slot in the wall 23 to engage the film perforations. The gear 34 carries a series of cams 47 successively engaging the end of the arm 43 to disengage the claw 44 periodically from the film whereby the loops of film formed in the recess 39 straighten and advance the film past the aperture 20. In a reversible magazine of the kind in which one half of the width of the film is exposed, the magazine reversed, and the other half of the film exposed, the exposure aperture is offset laterally with respect to the film, and two openings 24 and two pairs of recesses 38, 39 are arranged symmetrically with respect to the spindle 33 of the sprocket 32. Driving connection between the spindle 31 and one core is established through one wall of the magazine, and between the spindle 31 and the other core through the other wall of the magazine. Specifications 426,239 and 426,240 are referred to.
Patent GB-1358242-A (GB)
Title: Focusing screen camera
IPC: G03B19/10
Filed: 1972-06-08
Abstract: 1358242 Focusing screen cameras STUDIO GES FUR INDUSTRIE-UND MODEPHOTOGRAPHIE ANSTALT 8 June 1972 26877/72 Heading G2A The screen carrier in a focusing screen camera is pivotable about two mutually perpendicular axes, and can also be displaced linearly along each of these axes. As shown, the frame 11 of the focusing screen can slide in a guide 28 secured to a pivoting plate 6", and can be locked in any position along this guide by a clamping handle 14. The plate 6" (and hence the guide 28 and frame 11) can be pivoted about the common axis of the plate 6" and a supporting joint 6', and can then be locked in any angular position by another clamping handle 15. The angle can be adjusted accurately by a micrometer screw. The whole of the frame and the joint 6', 6" is carried on a vertical post supported by an arm 6, the arm 6 itself being pivotable about both vertical and horizontal axes through a support structure 3, 4. Arm 6 can also be moved laterally from left to right, and the whole assembly so far described can slide along an optical bench 1. In the position of Fig. 1, the frame 11 can pivot about the horizontal axis 12 or the vertical axis 12'. By sliding the frame horizontally (by horizontal movement of arm 6) or vertically (by movement along guide 28) the axes of rotation can be brought to the top edge 13 or the bottom edge 13', or to either extreme side edge 5' or 5", of the particular format being used. The objective can also be mounted in a manner similar to the focusing screen frame.
Patent GB-716201-A (GB)
Title: Electric discharge tube for emission of visible light
IPC: H01J61/04
Filed: 1951-11-16
Abstract: 716,201. Discharge lamps; luminescent materials. LOEWE OPTA AKT.-GES. Nov. 16, 1951 [Nov. 17, 1950], No. 27001/51. Addition to 701,589. Class 39(1) A mercury vapour discharge tube 1 as claimed in the parent Specification contains one or more transparent or translucent plates 4 each having its rear surface coated with fluorescent material, for example zinc sulphide, forming or outlining signs or characters, the discharge between the electrodes 2 and 3 taking place behind the plates, and each having a light filter 5 interposed between the discharge and the fluorescent signs. Each plate can be covered on its rear side facing the discharge by a plate of blue glass pervious to ultra-violet light, for example cobalt glass. In addition the plates 4 and/or the tube 1 can be made of coloured glass, for example yellow in the case of signs fluorescing yellow.
Patent GB-385041-A (GB)
Title: Process for the concentration of sexual hormones in body fluids
Filed: 1931-09-28
Abstract: Sexual hormones are obtained from body fluids, such as urine, follicle liquid, and amniotic fluid, by saturating these with water-soluble alkali, alkaline earth or ammonium salts, whereupon, on standing, the liquid separates into two visibly distinct layers the upper of which contains the hormone and is separated and worked up in known manner.  The fluids may be acidified before addition of the salt.  Examples relate to the treatment of the urine of pregnant women with ammonium sulphate and to the treatment of man's urine with sodium hydrogen sulphate. Specification 368,928 is referred to.
Patent GB-510930-A (GB)
Title: Improved magnesium alloys
IPC: C22C23/00
Filed: 1938-09-15
Abstract: 510,930. Alloys. VON GIESCHE'S ERBEN, G. Sept. 15, 1938, No. 27010. Convention date Sept. 29, 1937. Addition to 504,602. [Class 82 (i)] The alloys of the parent Specification are modified in that the lower limit of the cadmium content is 3.1 per cent. and up to 3 per cent. in all of one or more of the metals silver, beryllium, cerium and lithium are added. Specification 477,721 is referred to.
Patent GB-1314319-A (GB)
Title: Process for preparing aromatic hydroxyamines
IPC: C07C215/76
Filed: 1971-04-19
Abstract: 1314319 Preparation of aromatic hydroxyamines ENGELHARD MINERALS & CHEMICALS CORP 19 April 1971 [16 April 1970] 27149/71 Heading C2C In a process for preparing aromatic hydroxy amines by selective hydrogenation and rearrangement of an aromatic nitro compound, the nitro compound is hydrogenated in a dilute acid in the presence of a platinum group metal catalyst and dimethylsulphoxide.