baber/WOPTO huggingface dataset:
Patent GB-571276-A (GB)
Title: Improvements in or relating to the manufacture of magnesium hydroxide
IPC: C01F5/22
Filed: 1943-03-17
Abstract: 571,276. Magnesium hydroxide, CLARK, L. M., ROBINSON, J. G., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. March 17, 1943, No. 4319. [Classes 1 (iii) and 32] Magnesium hydroxide is obtained in coarse crystals and crystal aggregates, e.g., exceeding 30 microns in diameter, by the reaction of an aqueous solution of a magnesium salt with an aqueous suspension or solution of a hydroxide in the presence of a vigorously agitated aqueous suspension of magnesium hydroxide crystals the weight of which is at least 20 times and preferably between 30 and 100 times the weight of magnesium hydroxide precipitated per hour, the volume of the reaction zone and the rates of feed and outflow being so adjusted that the average agitation time of the reaction mixture is not less than half an hour and preferably between 1 and 10 hours. Advantageously the solution of a magnesium salt and the solution or suspension of a hydroxide are added continuously to different points of the vigorously stirred suspension of magnesium hydroxide. The aqueous suspension or solution of the hydroxide and/or the aqueous .solution of magnesium salt may each conveniently contain 0.2-5.0 per cent. by weight of reactant. Sea-water, from which all the calcium bicarbonate has been precipitated may be used as the aqueous solution of the magnesium salt. Examples relate to the reaction of: (1) magnesium chloride with sodium hydroxide; (2) sea-water, freed from bicarbonates, with milk of lime. Specification 482,339 is referred to.
Patent GB-306279-A (GB)
Title: Improvements in strengthened glass sheets or plates
IPC: B32B17/10
Filed: 1928-02-13
Abstract: 306,279. Head, P. H. Feb. 13, 1928. Compound transparent sheets formed of united sheets of glass and celluloid or the like are sealed at the edges by heating the intermediate sheet with a wire or by the action of acid or caustic soda thereon. When dry, the edges are coated with lacquer or varnish with or without any desired colouring material. Nitric acid is stated to be suitable for cellulose acetate as the intermediate sheet and phenol for acetyl cellulose. When caustic soda is used the action is stopped by applying diacetone alcohol. When a heated wife is used, excessive burning is prevented by following with a cold wire. The acid &c. is preferably applied by means of a glass brush.
Patent GB-247955-A (GB)
Title: Improved process for the manufacture of horn-like materials from albuminous substances
Filed: 1926-02-16
Abstract: 247,955. Deutsche Kunsthorn Ges. Feb. 21, 1925, [Convention date]. Albumens; formaldehyde.-In the manufacture of a horn-like substance from albuminous materials, a hardening medium is added to the moistened albuminous material before or during plastification, the hardening medium being such that its action is developed only after plastification and moulding are completed. Such a medium is paraformaldehyde which has been treated with an acid. According to an example, paraformaldehyde is dissolved at 95‹ C. in 35-40 per cent sulphuric acid, and the product is separated by cooling, and washed. This is mixed with moist casein, and the mixture is treated in the usual way. Formic acid is also specified as a suitable acid for treating the paraformaldehyde.
Patent GB-1535612-A (GB)
Title: Protective coatings by electrostatic powder deposition
IPC: B05D1/38
Filed: 1977-02-03
Abstract: 1535612 Electrostatic powder coatings CANADA WIRE & CABLE Ltd 3 Feb 1977 [5 Feb 1976] 4488/77 Heading B2E Continuous elongated substrates, e.g. glass or copper wire are coated by electrostatic application of powdered material. A first layer of powder is applied and at least partially fused. The coating is held at a temperature below the full fusion temperature of the powder to be applied as the second layer, the second layer is applied and the two layers fused. Two coatings of nylon, polyester or polyurethane may be applied, an epoxy layer followed by a nylon layer or a PVC layer followed by a nylon layer. Other suitable resins are specified.,
Patent GB-1186991-A (GB)
Title: Process for the Production of Hydroxyphenyl-Alkyl Phosphoryl or Thiophosphoryl Compounds
IPC: C07F9/30
Filed: 1968-01-29
Abstract: 1,186,991. Hydroxyphenylalkyl phosphonyl or thiophosponyl compounds. J. R. GEIGY A.G. 29 Jan., 1968 [30 Jan., 1967; 27 Feb., 1967], No. 4507/68. Heading C2C. Phosphorus compounds of the Formula I wherein each of R<SP>4</SP> and R<SP>5</SP> is a chlorine, bromine or iodine atom or an alkyl, aryl, alkoxy or aryloxy group, R<SP>1</SP> is a hydrogen atom or an alkyl group, A is an oxygen or sulphur atom and y is 1 to 18, are obtained by reacting the appropriate 3 - alkyl - 4 - hydroxy - phenylalkyl halides of the formula alkyl(HO)C 6 H 3 R<SP>1</SP>-C y H 2y X<SP>1</SP> with phosphorus halides, X<SP>2</SP>-PR<SP>2</SP>R<SP>3</SP>, wherein X<SP>1</SP> and X<SP>2</SP> are chlorine, bromine or iodine atoms and each of R<SP>2</SP> and R<SP>3</SP> is a chlorine, bromine or iodine atom or an alkyl, alkoxy, aryl or aryloxy group, in the presence of Lewis acids and non- aqueous inert aprotic solvents and adding sufficient water or hydrogen sulphide to decompose the complexes so formed. Reference has been directed by the Comptroller to Specification 948,880.
Patent GB-939303-A (GB)
Title: A process for the manufacture of notched metal ingots
IPC: B21B15/00
Filed: 1960-02-09
Abstract: 939,303. Making ingots; forging. PECHINEY COMPAGNIE DE PRODUITS CHIMIQUES ET METALLURGIQUES. Feb. 9, 1960 [Feb. 10, 1959], No. 4612/60. Classes 83 (2) arid 83 (4). A process for making notched ingots comprises continuously casting an ingot of trapezoidal section 2 and then forging notches therein by a press 4 fitted with a die 5 which has uniformly spaced serrations. The ingot is led into the press by guide rollers 3 and is cut into lengths 8 by shears 7. The continuous casting apparatus 1 comprises a rotating cylinder which has a groove in its circumference and a band which retains the ingot in the groove.
Patent GB-651395-A (GB)
Title: Improvements relating to electron discharge devices such as television transmission tubes
Inventor: HENSON ALEC FRANK
IPC: H01J31/48
Filed: 1947-02-18
Abstract: 651,395. Electric discharge tubes. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Feb. 18, 1947, No. 4624. [Class 39 (i)] Electric discharge device, particularly a television transmission tube, of the kind comprising a mosaic target electrode, an electron gun for producing a beam of electrons which can be caused to scan the target electrode and an electron multiplier disposed round the axis of the gun, has the electron multiplier composed of a plurality of electrodes separate from the anode of the gun and angularly spaced from each other about the axis of the gun and means for directing electrons returning from the target electrode to the first of the multiplier electrodes without impinging on the anode of the gun. The tube 1, Fig. 1, contains an off-set electron gun 4 and a beam 5 of electrons therefrom is deflected by the plates 6 through an aperture in a shield 7 and along the axis of the tube. The tube has a wall anode 8 and an axial focusing solenoid 3 and horizontal and vertical scanning deflections are imparted to the beam by magnetic deflecting coils 9. An annular decelerating electrode 10 causes the mosaic screen 2 to be scanned by a low velocity beam, reflected electrons forming a modulated return beam which is deflected by the plates 6 along the path 11 and strikes the first multiplying electrode 12 and then the multiplying electrodes 13 and 14 and the collector electrode 15, Fig. 2, under the influence of the mutually perpendicular electrostatic and magnetic fields produced by the cylindrical accelerating electrode 16 and the solenoid 3. In a modification the electrode 16 acts as the collector electrode. The electrodes 12-15 are located at equal radial distances from the electrode 16, the first electrode 12 being inclined to the axis of the gun 4 and the electrodes 13, 14 and 15 comprising segments of a cylindrical surface coaxial with the gun 4. In the modification shown in Fig. 3 the accelerating electrode 16 is replaced by separate electrodes 19, 20 and 21 and the multiplying electrodes 12, 13 and 14 and the collecting electrode 15 are arranged in a spiral. The decelerating electrode 10 may be dispensed with and the wall anode 8 extended to the plane of the target electrode 2, or several axially spaced annular electrodes 10 may be used maintained at progressively decreasing potentials towards the target electrode 2. In a further modification the electrode 10 may be replaced by a mesh electrode arranged parallel to and a short distance in front of the target electrode 2. The electrodes 12, 13 and 14 can be treated to give a uniform high secondary electron emission by polishing their surfaces and evaporating layers of secondary electronemitting material such as antimony on to them from an evaporator on the electrode 16. Specification 626,141 is referred to.
Patent GB-562525-A (GB)
Title: Improvements in or relating to the method of and apparatus for conditioning ink on aprinting press inking mechanism
IPC: B41F31/28
Filed: 1943-03-22
Abstract: 562,525. Printing machines. GOSS PRINTING PRESS CO., Ltd. March 22, 1943, No. 4649. Convention date, April 21, 1942. [Class 100 (ii)] Apparatus for conditioning ink on the inking mechanism of a printing press comprises means for applying a liquid spray to the mechanism, means for actuating the spray-applying means automatically when the press is operating at a certain speed, and means for maintaining the spray for a period of time following a change in the speed of the press. As shown, a number of spraying nozzles 30 are arranged along and adjacent to the distributing rollers contacting the ink distributing drum of the inking mechanism. Compressed air is supplied to the nozzles from a pipe 31 and draws the liquid to be sprayed through needle valves 42 connected to a liquid supply pipe 41 through which the liquid is forced from a reservoir 37 by air admitted thereto by a pipe 38 from the pipe 31. A valve 45 controlling the operation of the nozzles is actuated by a solenoid 46 which is energized when the press is operating at a slow speed by the closing of a switch 47 by contact therewith of the switch arm 49 of the press speed control switch 48. The closure of the switch 47 actuates a relay 56 to close a switch 60 which thereupon closes a circuit of a second relay 63 which closes the circuit of the solenoid 46. The relay 56 is of the quick make and slow break type so that after a change of speed of the press by moving the switch arm 49 which allows the switch 47 to open, the spray is maintained for a period of time until the relay 56 opens the switch 60. A push-button switch 70 enables the operator to actuate the valve at any time independently of the switch 47. The liquid sprayed may be water, or a hygroscopic liquid such as glycerine or diethylene glycol in water, in the case of water base inks, or kerosine in the case of petroleum oil base inks, the action of the liquid being to prevent caking of the inks on the inking mechanism or other parts of the press.
Patent GB-696242-A (GB)
Title: Improvements in or relating to a mixing arrangement for alternating currents
Inventor: HACK ERNST
IPC: H04H60/04
Filed: 1951-02-26
Abstract: 696,242. Sound recording or reproducing circuits. KLANGFILM GES. Feb. 26, 1951, No. 4669/51. Class 40 (iv). The input channels K1, K2 to a mixing circuit MR1, MR2 each have an equalizer E1, E2 and a switch Ss on the input side of the equalizer, the switches Ss being interconnected so that each input is connected to its own equalizer or all the inputs are connected to one of the equalizers. A second switch Sw may be provided in each channel to give extra combinations of connections between the inputs K1, K2 and the equalizers E1, E2.
Patent GB-792649-A (GB)
Title: Improvements in or relating to the heat hardening of fluid coke compactions
IPC: C10L5/28
Filed: 1956-02-15
Abstract: 792,649. Heat-hardening briquettes. ESSO RESEARCH & ENGINEERING CO. Feb. 15, 1956 [Feb. 24, 1955; June 29, 1955; July 27, 1955], No: 4735/56. Class 55 (1): In a method of heat-hardening briquettes of fluid coke obtained by coking heavy hydrocarbons and an agglutinating carbonaceous binder at temperatures at which the briquettes tend to deform or oxidize, the briquettes are contacted with a gaseous suspension of fluid coke and separated therefrom when they have been heat-hardened. In the arrangement shown in Fig. 1, the briquettes are fed through line 1 into a chamber 2 and fall countercurrently through an upwardly moving dense fluidized bed of fluid coke maintained by circulation through a heater 8 at a temperature above 700‹ F., preferably between 1200‹ and 1800‹ F., the time of the treatment being between 15 minutes and 2 hours. Fuidizing gas is admitted in quantities sufficient to fluidize the fluid coke but not the briquettes. In an example, the temperature of the fluidized bed is 1200‹ F. and the treatment time 30 minutes. In a modification the treatment chamber consists of a multi-stage elongated vessel in which a series of fluidized beds of fluid coke are maintained at different temperatures so that the briquettes pass downwardly through the beds of fluid coke at successively higher temperatures. In the modification shown in Fig. 3, the briquettes from a conveyer 201 are fed together with fluid coke at 800‹ F. from a hopper 203 on to a moving grate 202. After 10 minutes the briquettes are fed into a hopper 207 and thence into an elongated healing zone 206 supplied with hot flue gases through line 209. The fluid coke is separated from the briquettes, reheated and passed back to the hopper 203 by line 211, while the briquettes pass downwardly through the zone and are heated to 1600‹ F. Cooling gas may be injected through line 216 and the heat-hardened briquettes are withdrawn through line 210. The treatment temperature and the treatment time on the moving grate may be between 600-1200‹ F. and 5-20 minutes respectively and in the elongated healing zone between 1200-2000‹ F. and 1-12 hours respectively.
Patent GB-559448-A (GB)
Title: Improvements in arrangements for towing aircraft
IPC: B64D5/00
Filed: 1941-04-22
Abstract: 559,448. Aeroplanes. GENERAL AIRCRAFT Ltd., and WILLIAMS, D. L. H. April 22, 1941, No. 4740. [Class 4] A glider, initially towed by another aircraft, is fitted with a power plant which is insufficient by itself for take off or climb when the glider is fully loaded but is available to assist the take off, extend the range of the towed flight and assist in maintaining station, or to extend and control the glide after casting off, and to take off and maintain flight after the load has been discharged. The product of wing loading and power loading exceeds 350.
Patent GB-391283-A (GB)
Title: Improvements in the refining of hydrocarbons produced by destructive hydrogenation
Filed: 1932-02-19
Abstract: Hydrocarbons produced by destructivehydrogenization, e.g benzine, and illuminating, Diesel, and lubricating oils, are purified by washing with aqueous alkaline solutions under pressure after the hydrogen has been separated off but before the oils contact with air or oxygen. Caustic soda, caustic potash, ammonia, sodium carbonate, and sodium plumbite with or without added sodium hydrate or carbonate are specified reagents; 2-15 per cent is a suitable strength.  For example, middle oil obtained by the low-temperature carbonization of brown coal is led with hydrogen at 200 atmospheres and 425 DEG  C. over a tungsten sulphide catalyst; the product, 70 per cent of which boils below 180 DEG  C., is stripped of middle oil and condensed, the pressure reduced to 20 atmospheres, and the product passed upwards over Raschig rings against a descending 5 per cent solution of caustic soda.  The benzine is finally passed into a second tower in which it is washed with water at atmospheric pressure.  The fractionation may take place after the refining of the destructivehydrogenation products, and the pressure may be that of the destructive-hydrogenation process.  Specifications 135,855 and 315,439, [both in Class 91, Oils &c.], are referred to.
Patent GB-1435741-A (GB)
Title: Mirror assembly
IPC: B60R1/02
Filed: 1973-02-01
Abstract: 1435741 Rear view mirrors W R PARISH 1 Feb 1974 [1 Feb 1973] 4989/73 Heading B7J [Also in Division G2] A mirror assembly for a motor car comprises a first plate 1 having a reflective front surface to constitute a mirror, a second plate 3 hinged to plate 1 along respective edges 2 for tilting about a first axis, and a third plate 5 hinged to plate 3 along respective edges 4 for tilting about a second axis; the third plate 5 being mounted on a ball joint 6 for coarse adjustment of the mirror position whereafter fine adjustment can be effected by tilting about the first and second axes which are mutually transverse. Adjuster means 7 and 8 for effecting the tilting movement comprise screw-threaded members 9 and 10 extending through extensions 12 and 11 on the plates 3 and 1 respectively to engage against extensions 14 and 13 on the plates 5 and 3 respectively. The three plates 1, 3 and 5 may be separate members joined by additional hinges, or alternatively the three plates may be integrally moulded with their hinges from plastics material such as polypropylene.
Patent GB-1078044-A (GB)
Title: A method for producing the meso-form of 2,3-dibromosuccinic acid
IPC: C07C51/363
Filed: 1966-02-04
Abstract: Meso-2,3-dibromo succinic acid is prepared by heating a suspension of fumaric or maleic acid, or a mixture thereof, in an aqueous solution containing 10-48% by wt. dissolved HBr to 50-90 DEG  C. and introducing bromine into the suspension while maintaining it at 60-90 DEG  C., the molar ratio of acid to bromine being from 1:1 to 1:1.1. It is preferred to use a solution containing 20-35% by wt. of HBr and in such amount that there are 2-3 parts by wt. of solution to each part of acid.  Examples are provided.
Patent GB-883299-A (GB)
Title: A process for the manufacture of nitrogen-containing organic phosphorus compounds
IPC: C07F9/6587
Filed: 1958-02-17
Abstract: Compounds of the formula <FORM:0883299/IV (b)/1> or of formula <FORM:0883299/IV (b)/2> or <FORM:0883299/IV (b)/3> where Q is R or R1O, R being a hydrocarbon radical and R1 being an aromatic or hydroaromatic radical, Z is a monovalent hydrocarbon radical and ZZ is a divalent hydrocarbon radical, are prepared by reacting three moles of monoamine ZNH2 or 1.5 moles of diamine NH2ZZNH2 with one mole of the dichloride QPOCl2, both reagents being dissolved in a neutral inert solvent free from water.  In a modification, two moles of the monoamine or one mole of the diamine is replaced by at least two moles of a tertiary monoamine for binding the HCl formed; e.g. pyridine.  In examples, Q is variously ethyl, phenyl, benzyl, cyclohexyl, phenoxy and cyclohexyloxy; Z is methyl, phenyl, benzyl and cyclohexyl; and ZZ is -(CH2)6-.  Phosphoric acid cyclohexyl ester dichloride is prepared by reacting cyclohexanol with PCl3 under nitrogen to produce phosphorous acid cyclohexyl ester dichloride, which is then oxidised with molecular oxygen.
Patent GB-395796-A (GB)
Title: Improvements relating to display devices
IPC: A47F5/025
Filed: 1932-02-20
Abstract: 395,796. Changing display. GILL, S. C., 27, Gos well Road, and DALLAWAY, S., 102, Shoe Lane, both in London. Feb. 20, 1932, No. 5141. [Class 3 (i).] Two or more mirrors 1, arranged to reflect kaleidoscopically colours or goods on a rotary platform 3 disposed within a collapsible casing 9 having a viewing aperture 10, are inclined to one another and have their joining line inclined from the perpendicular to the platform 3. The platform may be turned by a motor 5 about a fixed shaft 7, on which may be mounted a table 4 which supports a stationary article for display. A lamp 12 may be disposed above or below the platform 3. When beneath the platform the latter is a transparent or translucent disc supported on radial bars having vanes on a circular rim whereby the platform rotates by convection currents rising from the lamp. Adjustable triangularly-disposed feet support the device. The mirrors 1 may be of metal hinged one to another, and secured by pins &c. to the casing.
Patent GB-733668-A (GB)
Title: Improvements in or relating to the cold separation of gas-mixtures
IPC: F25J3/04
Filed: 1953-02-25
Abstract: 733,668. Cylinders. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Feb. 25, 1953 [Feb. 29, 1952], No. 5268/53. Class 122 (1). [Also in Groups XIII and XXVIII] A compressor cylinder comprises a waterjacketed piston portion 102 and a compression space portion 100 insulated therefrom by a ring insert 115 of material, e.g. steel, having a thermal conductance of less than 0.1 cal./cms. sec.  C. The cylinder portion 100 is insulated by a layer 114 of conventional material.
Patent GB-324548-A (GB)
Title: Improvements in or relating to means for indicating telephone numbers
IPC: B42F17/28
Filed: 1929-02-16
Abstract: 324,548. Hicks, A. F. M. Feb. 16, 1929. Indicators directly operated by hand for displaying variable information. - A disc 10 for displaying telephone numbers and names adapted to be rotatably mounted behind the usual telephone mouthpiece is provided with a milled or serrated edge 22 to facilitate turning and with a smooth rear surface such as celluloid. An aperture 23 in the disc exposes the owner's telephone number.
Patent GB-1467263-A (GB)
Title: Semiconductor device
IPC: H01L23/485
Filed: 1974-02-05
Abstract: 1467263 Semi-conductor devices HONEYWELL Inc 5 Feb 1974 [5 Feb 1973] 5321/74 Heading H1K In a method of making a semi-conductor device, as shown a bipolar transistor, a diffused P+ region 11, Fig. 3, is formed below a major surface of an isolated portion of an N- type epitaxial silicon layer 10, an apertured insulating layer 12 is formed thereover, and the surface exposed by the aperture is covered by a layer 14 of N-doped polycrystalline silicon. The structure is then heated to effect diffusion of acceptor impurities from region 11 further into layer 10, and of donor impurities from layer 14 into the central part of region 11 to form a N ++ emitter region 15, Fig. 6. The donor impurity is preferably arsenic, which locally reduces the diffusion rate of the preferred acceptor impurity, boron, to form a narrow necked base region 11<SP>11</SP>. Layer 14 is then etched to leave an emitter contact 14<SP>1</SP>; a layer 17 of phosphorus-doped SiO 2  is deposited overall, melted, resolidified, and photo-etched to expose contact 14<SP>1</SP>, a base contact region 11<SP>1</SP>, and an N-type sinker to a buried collector layer (not shown); and metallization (e.g. Al) follows to form emitter, base and collector electrodes 18, 19. An additional metal contact 21 is provided to a doped polysilicon layer 20 which acts as a cross-under path or resistor. A pinch resistor may be made by the inventive method. -