baber/WOPTO huggingface dataset:
Patent GB-263058-A (GB)
Title: Improvements relating to thermostatic control valves
IPC: F16K31/68
Filed: 1926-07-31
Abstract: 263,058. Dale, W. B., Hopkinson, R. A., and Hopkinsons, Ltd. July 31, 1926. Thermostats. - A valve is controlled, through a relay valve, by a thermostat containing expansible fluid which acts on a diaphragm which is protected against excessive distortion. The tube b contains a liquid which is subject to the heat of the fluid passing through the main valve a, and the vapour pressure is transmitted through a tube d to a diaphragm c mounted on a block e. A plate o prevents excessive distortion of the dia, phragm c.
Patent GB-755061-A (GB)
Title: Process for the desulphurisation of petroleum coke
Inventor: NIXON IVOR GRAY
IPC: C10L9/02
Filed: 1954-06-30
Abstract: 755,061. Desulphurization of petroleum coke. NAAMLOOZE VENNOOTSCHAP DE BATAAFSCHE PETROLEUM MAATSCHAPPIJ. May 19, 1955 [June 30, 1954], No. 19187/54. Classes 50 and 55(1). In a process for desulphurizing or reducing the sulphur content of petroleum coke, the coke is first almost entirely freed from volatile components such as hydrocarbons and nitrogen compounds by heating at a temperature, e.g. between 900‹ and 1200‹C., such that not more than a minor proportion of the sulphur present in the coke is removed, the resulting coke is then heated at a temperature, e.g. between 1200‹ and 1600‹C., such that all or a major proportion of the sulphur is expelled from the coke separately from the volatile components removed in the first heating step. The two heating steps may be carried out in two separate heating chambers or in two zones of a single heating chamber, steam and/or inert gas being introduced at a point intermediate of the two zones to prevent the gases present in the two zones from mixing with each other. The heating of the chambers or zones of the chamber may be electrical, or by hot combustion gases, or by the supply of oxygen or oxygencontaining gases to the chamber or chambers. The coke is preferably treated in the presence of steam and in a finely divided state and the fluidized bed technique may be employed. Rotating ovens or tunnel kilns which are connected in series may be employed as the chambers. In an example a petroleum coke initially containing 5À42 per cent of sulphur had its sulphur content reduced to 0À90 per cent, the temperature in the second heating step being 1500‹C.
Patent GB-1328581-A (GB)
Title: Thermoset resin
IPC: C08F299/02
Filed: 1971-06-07
Abstract: 1328581 Interpolymers based on modified diene polymers M H RICHMOND 7 June 1971 [8 June 1970] 19262/71 Heading C3G Thermoset resins are produced by interpolymerization of (1) a macromolecular material having a diene polymer backbone and attached thereto recurring pendant units of formula  where a is 0, 1 or 2, R 1  is H or C 1-2  hydrocarbyl, R 2  is H or OH, R is H or C 1-3  hydrocarbyl and R<SP>1</SP> is H, C 1-6  hydrocarbyl, ester or halogen, the material having a M.W. of 500-100,000, being substantially free of carboxylic acid and having said recurring units present in an amount of 5-70 mole per cent of the diolefin units, and (2) a polymerizable ethylenically unsaturated compound. The material (1) is described and claimed in Specification 1,328,582. In examples, styrene is co-polymerized in the presence of tert-butyl perbenzoate (and in some cases stabilizers) with various macromolecular materials obtained by reaction of acrylic or methacrylic acid or the methyl half-ester of maleic acid or the methyl half-ester of maleic acid with epoxidized polymers selected from liquid polybutadiene, liquid isoprene, liquid hydroxypolybutadiene, liquid butadiene/styrene copolymer and polystyrene/ polybutadiene/polystyrene block copolymer. In Example 11 certain mixtures also include one or more of methyl methacrylate, methyl ethyl ketone peroxide and cobalt naphthenate. Prior to the inter-polymerization, compounding ingredients may be included in the mixture, e.g. asbestos filler and zinc stearate in Example 10.
Patent GB-1450825-A (GB)
Title: Methods of manufacturing semiconductor bodies and to the products of such methods
IPC: H01B1/06
Filed: 1974-05-02
Abstract: 1450825 Sintered semi-conductor SMITHS INDUSTRIES Ltd 17 April 1975 [2 May 1974] 19282/74 Heading C7D A sintered semi-conductor body is made by heating a particulate mixture containing SiC and a silicate or silicate forming material to coat the SiC particles with SiO 2  and then compacting and sintering the mixture. The preferred mixture contains 45-75 wt. per cent of SiC mesh size 400 to 1200 B.S. mesh and balance a SiO 2  glass containing 75-95% SiO 2  and one or more of the oxides of Al, Be, Ba, B, Cs, Ca, Li, Mg, K, Rb, Na, Sr, Ti and Y. The mixture is heated at 1150-1300‹C, then compacted at 50,000 p.s.i. and sintered at 1400-1600‹C in a non-oxidizing atmosphere. The initially heated mixture is preferably milled to -150 mesh, mixed with a binder of wax emulsion, glycerol and water, dried and screened to -30 +60 mesh. The sintered semi-conductor pellet is used in electric surface discharge igniters in gas turbine engines.
Patent GB-596508-A (GB)
Title: Improved device for containing commodities and facilitating selective removal thereof
IPC: A47G19/26
Filed: 1945-07-27
Abstract: 596,508. Table articles. LEMPERT, L., and HARTLEY, R. S. July 27, 1945, No. 19306. [Class 128] [Also in Group XVIII] A device for containing different kinds or qualities of commodities, e.g. sandwiches, cakes, hors d'oeuvres, or the like, has an internal part having radial divisions f to accommodate separate stacks or piles, and a transparent dome or cover d rotatable relatively to the internal part and formed with a gap d<1> to expose any of the compartments to permit removal of an article without contaminating articles in an adjacent compartment.
Patent GB-800733-A (GB)
Title: Improvements in or relating to self-manifolding sheet material
Inventor: FRANCIS FREDERICK GEORGE
IPC: B41M5/155
Filed: 1955-07-04
Abstract: 800,733. Ink. CARIBONUM, Ltd. June 15, 1956 [July 4, 1955], No. 19317/55. Drawings to Specification. Class 146(3) [Also in Groups VIII and XVI] In self manifolding sheet record material of the kind having on one side a colourless dye-stuff coating which is adapted to be transferred to the receptive surface of another sheet containing substances adapted to convert the dye stuff into its coloured form, the colour is prevented from fading or bleaching by providing in the receptive surface a substance which forms a lake with the coloured dye stuff. Lake forming substances specified are phosphotungstic acid, tungstic acid, phosphomolybdic acid, phospho-tungsto-molybdic acid, phosphosilicic acid, and their alkali metal salts. The tungstic acids are preferably applied in admixture with hydroscopic substances, e.g, glycerol, glycols and sorbitol, and in presence of methyl ethyl cellulose mixed if desired with barytes, precipitated calcium carbonate, blanc fixe and like finely divided material. Colourless dye stuff bases specified are bases, lactones or ethers of triphenylmethane dyestuffs. The receptive surface may comprise merely a roll of paper having an acidity of pH5-3.3 and the lake forming coating is applied thereto from rolls immediately before use. In examples, a colour forming solution consisting of nine parts 4, 4<SP>1</SP>-(tetraethyldiamino) benzhydrol, nine parts sextol phthalate and 83 parts mineral oil was mixed with an emulsion consisting of 63 parts gelatine, 50 parts precipitated CaCO 3 , 170 parts water, seven parts anhydrous Na 2 CO 3 and 12 parts TiO 2 , and the mixture applied to a barrier coated paper by spraying, etc.; the ethyl ether of Setoglaucine may replace the benzhydrol. Acid coatings specified are mixtures of the following compositions: (1) 60 parts dextrin, 288 parts blanc fixe, 180 parts water; (2) 30 parts tannic acid, 42 parts dibutyl tartrate; (3) five parts phosphotungstic acid, 10 parts water. Specifications 700,109, 704,061, [both in Group VIII], 712,216 and 198,396 are referred to.
Patent GB-663803-A (GB)
Title: Improvements in or relating to electric frequency modulation systems of communication
Inventor: GRAYSON HARRY
IPC: H03C3/09
Filed: 1949-07-22
Abstract: 663,803. Automatic frequency control systems. STANDARD TELEPHONES & CABLES, Ltd. July 22, 1949, No. 19340/49. Class 38 (iv). [Also in Group XL (c)] The output of a Foster-Seeley discriminator (associated with an electron velocity-modulated oscillator) is applied to potentiometers 10, 11, and voltages tapped therefrom are alternately applied by a change-over relay 9 (operating at mains frequency) to the input of a phase splitter 15. This input signal is effectively an alternating current, the phase sense and amplitude of which depend upon the sign and magnitude of the deviation. This signal is amplified in the push-pull amplifier 18, 19, and applied to one phase 2 of a two-phase motor controlling the frequency of the oscillator, the other phase 1 of the motor is supplied from the mains via a relay 5 which is only closed by a valve 24 when the error signal exceeds the bias at 33.
Patent GB-861324-A (GB)
Title: Improvements in or relating to cathode ray tubes
Inventor: LEWIS DAVID WILLIAM
IPC: H01J29/80
Filed: 1956-06-22
Abstract: 861,324. Cathode-ray tubes. ELECTRIC & MUSICAL INDUSTRIES Ltd. June 24, 1957 [June 22, 1956], No. 19345/56. Class 39(1). A post-deflection acceleration cathode-ray tube has the first and final anodes formed as coatings 12, 13 on the internal wall of the tube and an intermediate anode coating 14 is provided which is at a potential intermediate the potentials of the first and final anodes. The anodes are maintained at a potential ratio greater than two and the distance A the first anode extends in front of the deflection means is short so that the lens field set up between the anodes penetrates the deflection field, the degree of penetration being controlled by the intermediate anode. The coatings are joined by high resistive coatings 18, 19 to prevent wall charging and to provide suitable potential gradients. In a modification the coating 14 can be omitted and an intermediate potential zone formed by employing the two coatings 18, 19 which are then of different values of resistance. The resistive coatings are made from rouge loaded with graphite or carbon and may be applied on top of conductive coatings. Suitable dimensions for the electrodes and for the spacings indicated in the Figure, and suitable voltages for the electrodes are given in an example. Magnetic deflection may be employed instead of electrostatic deflection.
Patent GB-388650-A (GB)
Title: Improvements in or relating to gas supply regulating devices
IPC: G05D16/12
Filed: 1932-07-08
Abstract: 388,650. Pressure-regulating valves. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ, 12, Place des Etats- Unis, Montrouge, Seine, France. July 8, 1932, No. 19399. Convention date, July 20, 1931. [Class 135.] A pressure regulator actuated by a liquidsealed bell has the bell loaded by fluid pressure from the main conduit controlled by a cam clockwork actuated control valve. The main valve 1 is coupled by a rod 3 passing through a stuffing-box 4 with a bell 5 subject to outlet pressure admitted through a pipe 6. Inlet pressure is admitted through a pipe 8 fitted with a constant flow regulator 9 to the chamber 10 over the bell. From this chamber gas passes through a pipe 11 to a control valve 13 shaped so that equal movements of the valve produce equal changes of pressure in the chamber 10. The valve 13 is carried by a spindle mounted in a packing diaphragm 15<1> and carrying a roller 15 engaging a face cam 14 rotated by clockwork. From the control valve 13 the gas passes to an outlet regulator actuated by a counterbalanced liquid-sealed bell 20. This bell carries two valves, one 26 adapted to control the outlet 24 to the extractors whereby atmospheric pressure is maintained in the pipe 18 and the other 29 adapted to connect the pipe 18 to atmosphere in the event of the extractors ceasing to function. When the valve 29 is open a valve integral with the valve 26 closes the entrance to the pipe 24 leading to the extractors.
Patent GB-638854-A (GB)
Title: Improvements in vices
IPC: B25B1/10
Filed: 1948-07-20
Abstract: 638,854. Vices. BRANDSTAD, M. July 20, 1948, No. 19441. [Class 61 (ii)] . In a vice having hollow jaw - members slidably connected by a nut and clamping screw, the stationary and movable jaws 1 and 2 each comprise two trough-shaped halves of sheet-metal welded together at their abutting. edges. The clamping screw 6 is rotatable but non- displaceable axially in a bushing fixed in the wall of the jaw 2 by a washer 10 and a wearplate 9. The nut 5 mounted on the guideway 4 in the fixed jaw 1 has machined surfaces 11 which engage with the inturned edges 12 of the slide portion 14 of the movable jaw 2. Replaceable wear strips 13 of suitable thickness, secured to the bottom of the guide-way by screws, eliminate lateral clearance between the inverted V-shaped upper part 15 of the slide portion and the correspondingly-shaped part 16 of the guide-way. The hardened steel gripping members 17, 18 are of sufficient thickness to prevent dehardening during the welding thereof to the jaws. The vice is bolted to a bench by a fastening plate 3 welded to the under side of the stationary jaw.
Patent GB-196523-A (GB)
Title: Improvements in primary electric batteries
IPC: H01M6/08
Filed: 1922-07-15
Abstract: 196,523. Powell, B. F. S. Baden- July 15, 1922. Electrodes; electrolytes; arrangement.-A dry cell comprises a bent plate of iron or an iron vessel which may have an outer waterproof covering and is lined with paper fabric, or other permeable, non-conducting material. This electrode contains a central electrode consisting of one or more rods or plates of carbon, the space between the carbon electrode and container being filled with crushed carbon with which manganese dioxide may be mixed. The mixture is damped with water or a solution of ammonium chloride or other substance, and the cell sealed with pitch. Specification 158,733 is referred to.
Patent GB-883599-A (GB)
Title: 3-(3-amino-1-alkenyl)-indoles
IPC: C07D209/14
Filed: 1959-06-08
Abstract: The invention comprises compounds of the general formula <FORM:0883599/IV (b)/1> wherein R1 represents hydrogen or a C1-6 alkyl group, R2 represents hydrogen, a C1-6 alkyl or a C7-13 aralkyl, a C6-10 aryl group or a haloaryl group R3 and R4 each represent hydrogen or a C1-6 alkyl group, R5 and R6 each represent a C1-6 alkyl group, a C7-13 aralkyl group or a C6-10 aryl group or R5 and R6 taken together with the adjacent nitrogen atom represent a heterocyclic radical containing 5-7 ring atoms one of which, in addition to the amino-N atom may be nitrogen, oxygen or sulphur, the other ring atoms being carbon, and the 4, 5, 6 and 7-positions in the benzene ring may be substituted by a cyano, carbalkoxy (wherein the alkyl group contains 1-8 carbon atoms), di-(C1-8 alkyl) amino, C7-13-aralkoxy, C1-6 alkoxy, C1-6 alkyl, C1-13 aralkyl, C6-10 aryl; the acid addition salts and the corresponding N-oxides and N-oxide acid addition salts; and the preparation thereof by reacting a compound of the general formula <FORM:0883599/IV (b)/2> with a chloroformate Cl-COOR, wherein R is a C1-6 alkyl group in the presence of a tertiary amine.  The N-oxides are prepared by reacting the base with an oxidising agent. The 3-(3-amino-1-hydroxypropyl) indoles are prepared by reducing the corresponding ketone in turn prepared by reacting a 3-acylindole with an appropriate amine and aldehyde. Specifications 809,795, 834,028 and U.S.A. Speci-fications 1,915,334 and 2,075,359 are referred to.
Patent GB-584919-A (GB)
Title: Improvements in or relating to the forming, grinding and/or polishing of spherical surfaces
IPC: B24B11/00
Filed: 1943-11-24
Abstract: 584,919. Grinding &c. spherical surfaces. HEPWORTH, R. Nov. 24, 1943, No. 19670. [Class 60] In the grinding of spherical surfaces of lenses, the lens or the lap is guided by spherical guide surfaces, distinct from the curved surfaces being formed, with a centre coincident with that of the surface being formed. As shown, the lens or lap holder A is stationary and the lap or lens B is cemented to a holder Q mounted in a part-spherical member H co-operating with a seating J, a self-aligning ball or roller bearing RST being provided for the 'member H, which also carries a spindle K. A drum U with spherical surface having its centre at the centre X of the member H is secured to the member and is driven frictionally by a pinion V ; during grinding, the parts are rotated, the angle of inclination Z being varied as required. The holder Q may be recessed to receive the lens by the formation of two slots, which may be cut to form a cross. The lens or lap may be held on an element having a spherical inner surface movably engaging a stationary ball, or the element H may be hemispherical and fitted with a screwed spindle carrying the lens or lap whereby the radius of curvature may be adjusted.
Patent GB-321944-A (GB)
Title: Improvements in variable speed gearing
IPC: F16D41/08
Filed: 1928-08-21
Abstract: 321,944. Farley, J., and Maina, J. Aug. 21, 1928. Divided on 321,740. Variable-speed gearing is controlled by a lever 18 which has associated with it a cam 24, which, on each movement of the lever, opens a friction clutch 16, such clutch being operative only for the indirect drives. The clutch 16 is shown within the pinion 15 driven from countershaft pinion 14, but it may be associated with the gear which drives the countershaft. This clutch is described as being operated by register-pins 40, which are appropriate to the clutches described in Specifications 290,747 and 321,740, the latter clutch being adapted to grip in both directions, or in one direction, or to be disconnected. During direct drive, the gearing is at rest. Each time control shaft 23 is rocked to operate one of the forks 19, 21. the cam 24 rocks a lever 26 and so moves the pins 40. A guard bar 35 slides with lever 18 and shaft 23 to lock the forks not being operated. Specifications 274,571 and 275,530 also are referred to.
Patent GB-682150-A (GB)
Title: Improved device for removing, separating and collecting dust generated by grinding and other machines
IPC: B01D45/02
Filed: 1951-08-21
Abstract: 682,150. Washing air. BILLAU, J. R., and COOK, E. Aug. 21, 1951, No. 19701/51. Class 55 (ii). In a device for separating dust from air, the air is directed downwardly on to the wetted upper surface of a member floating in the washing liquid so that the dust adheres to the surface. The figure shows a portable air cleaning plant on a trolley 10. Dust laden air, for example from a grinding machine, is drawn by a fan 13 through a pipe 15 and delivered into a primary dust collecting chamber 17. The air flow is broken up, with the separation of the larger dust particles, by baffles 24 which depend from a plate 21, the air then passing over the top of the plate to an outlet 28, past a second series of baffles 29 and into a pipe 45 which directs it downwardly on to the wetted surface of a member 48 floating in a liquid 47 in a tank 36. The member 48, which covers nearly the whole of the liquid surface, is provided with holes 49 through which the liquid wells up as the member is depressed by the flow of air, the liquid continuously washing the top surface free of dust and keeping it wet. The cleaned air escapes through an outlet 50 which is provided with a filter 51 which removes any remaining dust particles.
Patent GB-681552-A (GB)
Title: Improvements in or relating to cast iron and method of producing same
IPC: C21C1/10
Filed: 1949-07-27
Abstract: A process for producing cast iron having a carbon content which is predominantly nodular comprises preparing a molten grey iron mix and adding thereto a predetermined amount of an alloy of Mg and Cu or an alloy of Mg, Cu and misch metal.  An alloy consisting of 90-95 per cent Cu and 5-10 per cent Mg may be added to give 0.1-0.2 per cent of Mg in the iron or 1.0-2.0 per cent of an alloy consisting of 63-90 per cent Cu, 7-30 per cent Mg and 3-7 per cent misch metal may be used.  The iron employed may, for example, have the composition C 3-4.3 per cent, Si 2-4 per cent, Mn 0.4-2 per cent, P 0.01-0.4 per cent, S less than 0.04 per cent.  If more than about 7-13 minutes elapse after the addition before commencement of casting it may be necessary to add a further quantity of the alloy, less than the first addition.  It may also be necessary to add a small proportion of a graphiting agent such as calcium silicide.  The alloy may be prepared by heating Mg to a temperature, e.g. 1200 DEG F, at least sufficient to cause the Mg to soften or partly melt and pouring on to it molten Cu, e.g. at 2000 DEG F, the quantity of Cu being largely in excess of the quantity of Mg.  If an alloy containing misch metal is to be formed the misch metal may be added, e.g. in solid form, or alternatively it may be added to molten Mg before adding the Cu. The temperature of the molten alloy is then rapidly reduced.
Patent GB-376498-A (GB)
Title: Improvements in or relating to television receiving systems and cathode ray devices suitable for use therein
IPC: H04N5/74
Filed: 1931-07-09
Abstract: 376,498. Television receivers ; cathoderay tubes. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London.-(Assignees of Zworykin, V. K. ; 22, Merrick Villa, Collingswood, New Jersey, U.S.A.) July 9, 1931, No. 19797. Convention date, Aug. 15, 1930. [Classes 39 (i) and 40 (iii).] In a television system the picture is reproduced on a screen by a constant light-source in conjunction with a light-valve arrangement controlled by a moving beam of cathode rays. The cathode beam 27 emitted from a gun 20 is controlled in intensity by the received signals through an amplifier 22 and is deflected under the action of coils 25, 26 to scan a control screen or light-valve arrangement 15 interposed between a constant light-source 12 and the viewing screen 11. The control member 15, which is subjected to a high voltage from a source 29, comprises a series of apertures 16 and co-operating plates 17 pivoted to members 18 attached to the structure 15 by a cement 19 of low conductivity. The varying intensity of the cathode beam 27 effects corresponding and sequential variations of the discharge of the plates 17 which, in consequence, change their positions to vary the illumination by the constant source 12 of the corresponding elemental areas of the screen 11. In a modification, Figs. 4 and 5, the screen is illuminated by reflection from the screen 15a which is constructed with a highly reflecting surface 32 whose elemental areas are shielded from the constant light-source 12 to varying extents dependent upon the positions taken up by the plates 33 under control of the cathode beam. The front surfaces of the plates 33 are arranged to be non-reflecting. According to a further modification successive elemental areas of a screen of material normally opaque to the light from the source 12 are rendered variably transparent in accordance with the intensity of the cathode beam. A substance known as " Willemite " is stated to be suitable for such a screen.