baber/WOPTO huggingface dataset:
Patent GB-828217-A (GB)
Title: Improvements in or relating to the preparation of photographic silver halide emulsions
Inventor: PAUW ALFONS JOZEF DE
IPC: G03C1/04
Filed: 1956-06-07
Abstract: 828,217. Photographic emulsions. GEVAERT PHOTO-PRODUCTEN N.V. May 22, 1957 [June 7, 1956], No. 17650/56. Class 98(2) In the preparation of photographic emulsions a dispersion is first formed by precipitating silver halide in an aqueous solution of a cellulose sulphate (including mixed ether cellulose sulphates) and then an aqueous binder solution is mixed with the dispersion. Aqueous solutions of a silver salt and a halide may be run simultaneously. into an aqueous solution of the cellulose sulphate to form the dispersion. The binder, such as gelatin or polyvinyl alcohol may then be added to the dispersion and the emulsion gelled (by adding a-naphthol or gallic acid when using polyvinyl alcohol), noodled and washed in the usual manner. Alternatively, the dispersion may be ripened, precipitated by adding an organic solvent such as acetone, methanol, ethanol or methyl or ethyl acetate, or a saturated aqueous solution of sodium sulphate or sodium chloride, the precipitate then being washed' and dispersed in gelatin or polyvinyl alcohol. The cellulose sulphate may be pure sulphate (or its water-soluble salts) or it may be methyl cellulose sulphate, ethyl cellulose sulphate, ethoxy-ethyl cellulose sulphate, hydroxy-ethyl cellulose sulphate, or ethylhydroxy-ethyl cellulose sulphate. The emulsions may be chemically sensitized with allyl isothiocyanate, allylthiourea, sodium thiosulphate, potassium selenocyanide, stannous salts, imino-amino-methane sulphuric acids as in Specification 798,823, or compounds of gold, ruthenium, rhodium, palladium, iridium or platinum.
Patent GB-255464-A (GB)
Title: Improvements in the manufacture of hydrofluoric acid
IPC: C01B7/19
Filed: 1925-06-02
Abstract: 255,464. Buchner, M. June 2, 1924, [Convention date]. Addition to 234,852. Hydrofluoric acid; boron fluoride; silicon fluoride.-In the preparation of pure hydrofluoric acid from materials containing silica besides a fluoride by adding silicon fluoride to the mixed fluorine acids produced by decomposing the material with an acid, and using the resulting pure hydrofluosilicic acid to form hydrofluoric acid by decomposition of a metallic fluoride, other volatile fluorides forming complex acids with hydrofluoric acid are used. For example, boron fluoride may be added to fluorspar in the course of decomposition or to the mixture of hydrofluoric and hydrofluosilicic acids which is liberated. The mixture of hydrofluosilicic and hydrofluoboric acids is then used to decompose an alkali fluoride when pure hydrofluoric acid and a mixture of alkali silicofluoride and borofluoride are obtained. The latter salts, on heating, yield alkali fluoride and a mixture of boron fluoride and silicon fluoride, the, former of which can be separated by liquefaction and fractional distillation for re-use.
Patent GB-184008-A (GB)
Title: Improvements relating to liquid fuel fired furnaces
IPC: F23D11/10
Filed: 1921-06-29
Abstract: 184,008. Burdon, W. M., Burdon, M. M., and Burdens, Ltd. June 29, 1921. Liquid-fuel furnaces.-The compressed air or steam used to atomize the fuel induces atmospheric air into the burner, and is there gyrated together with the induced air. In the form shown, the atomizing-agent, after passing through the heating-pipe 9<a>, enters the burner 7 through the nozzle 8, and induces a large volume of air to flow through the heating-pipe 10<a>, and pipe 10 to the burner. A part of the induced air passes with the compressed air &c. through the carburettor 7<b> and is gyrated in one direction by the spiral retarder 7<a> before mixing with the fuel issuing from the nozzle 7<c>, whilst the remainder passes through the annular space 7d surrounding the carburettor, and is gyrated in an opposite direction by the spiral retarder 7<e>. The heating- pipes 9<a>, 10<a> are shown in the upper part of the furnace, but they may be located in the bottom or in the flues or furnace uptakes, and may be replaced by coils or castings secured to the furnace front plate.
Patent GB-1462467-A (GB)
Title: Cushioned absorbent pads
IPC: A61F13/15
Filed: 1974-04-23
Abstract: 1462467 Laminated pads WEYERHAEUSER CO 23 April 1974 17726/74 Heading B5N [Also in Division A5] An absorbent pad, comprising at least one layer of compressible liquid-absorbent material 3 and one layer of liquid-impervious material 4, has a plurality of spaced-apart, compressionresistant load-bearing members 5 positioned within the absorbent layer 3 such that, when a compressive force is applied to the pad, the load-bearing members will accept a substantial portion of the force thereby allowing the absorbent material to remain in a generally uncompressed state. The load-bearing members 5 are normally produced as air-filled cells projecting from the impervious layer 4 into apertures 7 in the absorbent layer and are preferably the same height as the absorbent layer. The layer 4 may be of polyethylene. The air-filled cells may be replaced by water-filled cells or by a foamed material with a higher resistance to compression than the absorbent material. The body-contacting surface of the absorbent layer 3 and load-bearing members 5 may be covered with a tissue layer 2 which improves the wicking of liquid away from the surface. The pad may be fashioned as a diaper or as a pad for an incontinent person.
Patent GB-1138939-A (GB)
Title: Process for forming connecting pads on a circuit board
Inventor: SHAHEEN JOSEPH MICHAEL
IPC: H05K3/40
Filed: 1967-04-18
Abstract: 1,138,939. Printed circuit boards. NORTH AMERICAN AVIATION Inc. 18 April, 1967 [6 Sept., 1966], No. 17798/67. Heading H1R. Relates to a process for forming electrical connecting pads on a circuit board having a circuit pattern. In Fig. 2(a), a conductive layer 20 is bonded to an epoxy resin insulating layer 21 which is to form the base of a circuit board, Holes in the board 21 are filled with conductive material (e.g. copper by electroplating or liquid gallium alloy which is subsequently hardened) flush with the top surface of the board (Fig. 2(b), not shown). The top surface of the board 21 is then firstly electrolessly copper plated with a layer 25 and secondly electroplated with a layer (26), Fig. 2(c) (not shown) of copper or nickel. Layers 20, 26 are then coated with photo-sensitive material and exposed to ultraviolet light to form circuit patterns (Fig. 2d) on both sides of the board 21, unexposed portions of photo-sensitive material being washed away and the uncovered copper etched away leaving circuit patterns 27, 27<SP>1</SP>. The patterns are interconnected by the conductive fillings 23. To produce the protruding pads, a conductive coating for use as a continuity electrode is formed on the board 21, or there may be a conductive coating at each pad position only. Masks 28, 28<SP>1</SP>, Fig. 2(f), each having a pressure sensitive adhesive layer are then mated with the board surfaces and holes therein are filled by electro-deposition with conductive material such as copper. After filling, the mask and the conductive electrode coating are removed leaving an assembly as shown, Fig. 2(i). Insulating layers similar in form to the masks are then stuck to the board 21 the outer surface of the insulation being flush with the tops of the pads (Fig. 2, not shown). The heights of particular pads may be further increased by deposition to make connection with further circuit board layers, added to form a multi-board laminate.
Patent GB-427688-A (GB)
Title: Improvements in and relating to cloches or seed-bed protectors
IPC: A01G13/04
Filed: 1934-06-16
Abstract: 427,688. Horticultural frames. WADESON, A., 13, Green Street, and MILLER, J., 191, Wigan Street, both in New Springs, near Wigan. June 16, 1934, No. 17870. [Class 20 (i)] A horticultural frame of inverted V-type is collapsable, and comprises a horizontal top rod 1 and metal strips 2, 3 with hookshaped ends 4, 5, to engage over the rod and to support glass sheets 7 with their upper edges abutting. The upper ends of the strips 3 are bifurcated and receive the upper ends of the strips 2 between the bifurcations to constitute a stop to limit the closing position of the strips when in the covering position. The hook-shaped ends of the strips 2 are screwed to the rod so that the other strips rotate about the rod outwardly for closing. The strips may be replaced by bent wires which engage over the rod and are positioned between collars sprung on to the rod. Specification 417,471 is referred to.
Patent GB-1418415-A (GB)
Title: Police sign with sound amplification facilities
IPC: G09F13/04
Filed: 1973-04-13
Abstract: 1418415 Display devices PARKINSON RADIOTELECOMMUNICATIONS Ltd 18 April 1974 [13 April 1973] 17932/73 Heading G5C A roof sign to be mounted on police or similar vehicles has a casing supporting a rotary beacon 1 and containing light sources, twin loudspeakers 7, a solid state control unit to operate the sign, and a solid state amplifying unit to provide various sound effects and speech via a microphone, the casing including front and rear changeable signs for rear illumination by the light sources. The sign may be unplugged from one vehicle and transferred to another, the casing being carried on telescopic tubes with feet which detachably engage a vehicle roof.
Patent GB-615303-A (GB)
Title: Improvements in or relating to building constructions
IPC: E04B1/04
Filed: 1946-04-08
Abstract: 615,303. Building blocks. TARRAN, R. G. April 8, 1946, No, 17945/47. Divided out of 610,026. [Class 87(i)] A stringer block 11 is provided with an inwardly facing recess to receive the end of a joist 18 which is retained by a rod 17 passed through holes in the vertical webs 10. The block is provided with a sloping outer face rebated at 11d. Adjacent wall slabs 12, 14 are positioned by metal tongues 12a, 11c and grooves 11e, 14a and secured by bolts 13, 15.
Patent GB-822460-A (GB)
Title: Improved freezer tray-grid assembly
IPC: F25C1/24
Filed: 1958-06-05
Abstract: 822,460. Ice-making. GENERAL MOTORS CORPORATION. June 5. 1958 [June 24, 1957], No. 17991/58. Class 29 In an ice tray having a grid made of a longitudinal wall 24 on which are mounted inclined transverse walls 26 moved by a hand lever to upright position to release the blocks, walls 26 are bowed convexly in the direction of release movement to reduce the force necessary to break the ice bonds..
Patent GB-832143-A (GB)
Title: Improvements in and relating to the production of gaseous unsaturated hydrocarbons
IPC: C07C4/04
Filed: 1958-06-05
Abstract: Olefines, particularly ethylene and propylene, are produced by the cracking of gaseous or liquid hydrocarbons in a fluidized bed of refractory solids wherein an oxygen-containing gas is introduced below the bed to burn off carbon deposits and so supply at least part of the heat required for cracking the hydrocarbon while the hydrocarbon is introduced into an upper part of the bed. Further heat may be added by introducing an extraneous fuel just above the oxygen inlet, e.g. a condensate or tail gas obtained from the reaction products.  The fluidized bed, in order that it may so be divided into sections, should have a depth 1 1/2 to 6 times its maximum width and may be cylindrical or taper towards one end.  The solid may be quartz sand of 0.1-1 mm. diameter and may also contain a catalyst.  The cracking temperature may be 650-900 DEG  C. and the oxygen-containing gas, which may be air, is preferably preheated to the reaction temperature.  The oxygen-containing gas should be free of water to prevent the water gas reaction occurring.
Patent GB-419096-A (GB)
Title: Improvements in thermionic cathodes
IPC: H01J1/20
Filed: 1933-06-24
Abstract: 419,096. Thermionic valves. M.O. VALVE CO., Ltd., Electra House, Victoria Embankment, London, SMITHELLS, C. J., and TRELOAR, L. R. G., c/o General Electric Co., Wembley, Middlesex. June 24, 1933, No. 18051. [Class 39 (i).] An indirectly heated cathode is formed by coating a tungsten wire 1 of 0.1 m.m. diameter with a layer of alumina 0.1 to 0.2 m.m. thick, winding thereon a spiral of nickel wire 0.1 m.m. diameter and spraying on the spiral a coating of barium and strontium carbonates which coating is afterwards converted to the oxides ; the turns of the spiral are kept apart and after an appropriate length has been cut off a manufactured length, the structure is doubled as shown so that the magnetic fields of adjacent branches compensate each other. The earthed leads 5 are connected to the ends and middle of the cathode. Specifications 209,415, 278,787, 281,262, [all in Class 39 (i)], 360,715, 371,419, and 379,334 are referred to.
Patent GB-239022-A (GB)
Title: Improved foot support for motor cycles and the like
IPC: B62J25/00
Filed: 1924-07-29
Abstract: 239,022. Brookes, F. S. July 29, 1924. Foot - rests, more particularly for pillion riders on motorcycles &c., consist of a longitudinally - extending footboard or platform 7 carried by transverse bars 9 pivoted at 6 to one or more clips 1, 2 secured to the chain stays of the cycle frame, so that the footboard 7 can be swung inwards to an upright position when not in use. The outer member 2 of each clip is formed with side lugs 5 carrying the pivot pin 6, on which are pivotally mounted side lugs on the end of the) bar 3, which mav be of channel section. The footboard is held in the horizontal position by the engagement of the inner ends of the bars 9 with the clip members 2. Springs 11 hold the footboard in the raised position. An upwardly-projecting arm 8 on one of the clip members 1 abuts against the down stay of the machine to prevent the clips from turning on the frame tube.
Patent GB-1401293-A (GB)
Title: Electric discharge lamps
IPC: H01J61/33
Filed: 1972-04-19
Abstract: 1401293 Gas discharge lamps GENERAL ELECTRIC CO Ltd 4 April 1973 [19 April 1972] 18095/72 Heading H1D A high-pressure discharge lamp has a tubular envelope which in transverse cross-section has a configuration on the inside and/or outside such as to provide a non-uniform polar distribution of light. Typical cross-sections are shown in the figures which include the formation of lenses and prisms to direct the light as required. The envelope can be made of fused silica or sintered alumina or preferably crystalline corundum. The ends of the tubes can be sealed by niobium members soldered to the tube with zirconiumtitanium-vanadium alloy. The filling of the lamp can include sodium, mercury and xenon at a pressure of 30 Torr.
Patent GB-920313-A (GB)
Title: A container for storing or transporting liquefied gases at a low temperature
IPC: F17C13/08
Filed: 1961-05-18
Abstract: 920,313. Storing liquefied gas. CONCH INTERNATIONAL METHANE Ltd. May 18, 1961 [Aug. 3, 1960], No. 18162/61. Class 8(2). [Also in Group XXXIII] A container for storing or transporting liquefied gas, comprises a rigid outer shell 1, e.g. the inner hull of a double hull ship, heat insulating material 2 and an inner tank 3 supported by the insulating material 18 adjacent the bottom wall of the shell 1, the vertical side walls of the tank 3 having keys 4 which fit into corresponding keyways 5, each keyway having a length larger than that of the corresponding key and a width substantially equal to that of the keys; alternatively the tank 3 may be provided with the keyways for engagement by the keys. As described with reference to Fig. 1 the keys 4 are secured to the tank 3, e.g. by welding, and the keyways 5 are in hardwood blocks 11 secured to the shell 1. The insulating material may be balsa wood or quippo and the tank 3 may be made of aluminium or stainless steel. Each side wall of the tank 3 may be provided with a pair of keys.
Patent GB-458774-A (GB)
Title: Improvements in or relating to the production of effects in films, sheets and similar materials
IPC: B44F9/08
Filed: 1935-06-25
Abstract: The pattern of a crushed pile fabric is produced on the surface of an artificial film so as to impart a mother-of-pearl or similar effect, by applying a crushed pile fabric to the film, subjecting the assembly to an operation to reproduce on the film the pattern of the fabric, and then separating the film from the fabric.  Instead of using a crushed pile fabric directly, a device on which the pattern has been reproduced by use of a crushed pile fabric may be employed for reproducing the pattern on the film. The film may be softened prior to or while in contact with the impressing means. Thermoplastic films may be heated, or solvents or softeners may be applied for softening the films.  The films may have a basis of cellulose acetate, propionate, butyrate, or stearate, or methyl or ethyl cellulose, or polyvinyl acetate, polyacrylic ester or ether, or other synthetic resin.  The treated films may be used for lamp-shades, decoration of musical instruments, table-tops, and wall-coverings.  Films of cellulose organic derivatives may be used for bathroom decoration on account of their resistance to moisture. The films may be stamped in a press by a stamp having a crushed pile fabric attached thereto or by an embossed die.  A crushed pile fabric and a film travelling from two sources of supply may be passed between a pair of heated rollers, or the film may be passed between two rollers, one or both of which are embossed.  Pile fabrics employed may have a cotton back and silk, regenerated cellulose, or cellulose derivative pile.  The pattern may be reproduced on the film by the intermediary of a printing device such as a plate or roller having a pattern thereon which has been reproduced from a crushed pile fabric.  The printing device may be produced by a process of electro-deposition from a film which has been printed by means of a pile fabric.  If solvents are used, the proportions are such that while the film takes the impression easily it is not so sticky that the pile fabric adheres to it or that subsequent stripping is difficult.  The films may subsequently be treated locally or uniformly on one or both sides with colouring or other decorative material such as ink or coloured powder.  The films may be sprayed with metal by a Schoop pistol or coated by the particle stream produced under high vacuum between metal electrodes. Colour may be applied to the back of the films and then removed from the undepressed portions by a knife or other wiping device.
Patent GB-844718-A (GB)
Title: Improvements in piston packing rings and method of producing same
IPC: F16J9/26
Filed: 1958-06-06
Abstract: 844,718. Piston rings. MARKER, H. F. June 6, 1958, No. 18228/58. Drawings to Specification. Class 122 (1). A piston ring is coated on its working surface first with a layer of hard chromium and then with a layer of relatively soft chromium which, in use, wears more quickly than the hard chromium and thus reduces the running-in period. The base metal of the ring may be cast iron to which the chromium layers may be successively applied by electro-deposition.  Reference has been directed by the Comptroller to Specifccation 632,986.
Patent GB-1349196-A (GB)
Title: Flue gas desulphurization process
IPC: B01D53/50
Filed: 1971-06-01
Abstract: 1349196 Desulphurization of flue gas ESSO RESEARCH & ENG CO 1 June 1971 [1 June 1970] 18237/71 Heading C1A In a process for desulphurizing an SO 2  and O 2  containing flue gas in which a small amount of S<SP>VI</SP> is formed in the course of absorbing SO 2  in an aqueous absorbent containing NH 3  and/ or NH 4 <SP>+</SP> and in which at least a part of the absorber effluent (containing S<SP>IV</SP> and S<SP>VI</SP>) is acidified with NH 4 HSO 4  to form SO 2  and an aqueous mixture of (NH 4 )SO 4  and (NH 4 )HSO 4 , the major portion of the (NH 4 ) 2 SO 4  content of said mixture is decomposed to form (NH 4 )HSO 4  and NH 3  and a major portion of the (NH 4 )HSO 4  thus produced is returned to the acidifier where it is used for acidification of the absorber effluent, a minor portion being returned to the furnace, in which the flue gas is produced, where it is decomposed into a gaseous mixture of N 2 , SO 2  and water thereby reducing the S<SP>VI</SP> content of the system. It is preferred that the amount of bisulphate returned to the furnace is equivalent to the sum of the amount of S<SP>VI</SP> formed and the amount of SO 3  present in the flue gas, that the absorbent contains ammonium sulphite as solute. Liberated SO 2  may be converted into useful products such as S or H 2 SO 4  and ammonia liberated in the decomposition stage may be reacted with a second portion of the absorber effluent which is not acidified, to produce fresh absorbent. In the drawing the flue gas leaving furnace 10 is cooled by exchange with combustion air in heat exchanger 12 before passing up absorber tower 20 against a stream of aqueous ammoniacal absorbent solution. Desulphurized gas containing <10% of the original SO 2  content is vented at 23. The absorbent passes to holding tank 25 and from there a portion is passed to acidifier 30 where it is treated with ammonium bisulphate via 31. The slurry produced on acidification and after liberation of SO 2  via 32 is passed into a stream of hot gas 34 and decomposer 35 where water is evaporated and the ammonium sulphate content of the slurry is decomposed to yield gaseous ammonia and ammonium bisulphate. The ammonium bisulphate is returned in major proportion to acidifier 30 via line 31, the minor proportion being returned via line 50 to furnace 14, either in molten state or as a particulate solid, where it is decomposed to produce SO 2 , N 2  and H 2 O. Ammonia leaving decomposer 35 is returned to ammoniator 40 where it is contacted with absorber effluent taken from line 28 and diluted with water in liner 41-42 to produce fresh absorbent which is recycled via lines 43 and 46 to absorber 20 via holding tank 21. Line 40 and cooler 45 are employed for circulation and cooling of the regenerated absorbent from 40 in order to maintain a desired temperature in said ammoniator.
Patent GB-182792-A (GB)
Title: Anchoring devices for airships
IPC: B64F1/14
Filed: 1922-07-04
Abstract: 182,792. Luftschiffbau Zeppelin Ges. July 8, 1921, [Convention date]. Anchoring; land wheels. -A pyramidal frame a secured beneath an airship has a ball member f adapted to be secured in a socket g on the ground or on a scaffolding so that the airship can swing in the wind. The frame a also carries a beam c, which is adapted to rock within limits about a pivot d and is provided with castor wheels b to enable the airship to be moved into and out of its shed.
Patent GB-763512-A (GB)
Title: Improved method for the preparation of methyl alkyl ketones
Filed: 1954-06-22
Abstract: Methyl alkyl ketones, in which the alkyl group may be saturated or unsaturated, are prepared by passing a vaporous mixture of acetic acid and a long-chain saturated or unsaturated fatty acid having from 8 to 18 carbon atoms, or a mixture of such fatty acids, over a magnesium oxide catalyst at a space velocity of from 0.0014 to 0.0033 grams of reaction mixture per minute per gram of catalyst, the molar ratio being 2.4 to 4 mols. of acetic acid per mol. of fatty acid and the reaction being carried out at a temperature of from 320 DEG  to 370 DEG  C. and at a pressure of from 1 to 150 mm. mercury absolute. The reaction is preferably performed at a temperature of from 335 DEG to 365 DEG  C. and/or at a pressure below 100 mm. mercury absolute, the reaction mixture being advantageously passed downward through a bed of the catalyst, the latter preferably being in the form of pellets having maximum diameters of from 1/8 to 1/2 inch.  In examples: (1) a vaporous mixture of 3 mols. of acetic acid and 1 mol. of lauric acid is passed downward through 720 g. of magnesium oxide pellets at 320-340 DEG  C. and 20-40 mm., over a period of 6 hours to give methyl undecyl ketone and laurone, and (2) this procedure is repeated using a mixture of lauric and myristic acids in place of the lauric acid, the pressure being 90-100 mm., to give an unsymmetrical methyl alkyl ketone product.  Reference is also made to the use of unsaturated acids such as oleic, linoleic and linolenic acids.