baber/WOPTO huggingface dataset:
Patent GB-694204-A (GB)
Title: Improvements in or relating to the preparation of aldehydes of 1:2:3-trisubstituted pyrazolones
Filed: 1950-12-19
Abstract: In a process for the preparation of 1 : 2 : 3-trisubstituted pyrazolone aldehydes of the formula <FORM:0694204/IV (b)/1> in which R, R1 and R11 are alkyl or aryl radicals, a 1 : 2 : 3-trisubstituted pyrazolone carboxylic acid chloride is reacted with an aryl sulphone hydrazide (R111SO2.NH.NH2) or with hydrazine and subsequently with an aryl sulphonyl chloride to give the aryl sulphone hydrazide of the general formula <FORM:0694204/IV (b)/2> (R111 being an aryl radical) and that hydrazide is decomposed by heating in the presence of an alkali metal carbonate.  As an organic solvent in the reaction of the aryl sulphonyl chloride there may be used a tertiary base, e.g. pyridine.  The heating with alkali metal carbonate may be effected in a solvent e.g. an alcohol such as glycerol.  In examples: 1-phenyl-2,3-dimethylpyrazolone-4-carboxylic acid benzene sulphone hydrazide is heated with sodium carbonate in glycerol solution to give 1-phenyl-2,3-dimethyl pyrazolone aldehyde.  The 1-phenyl-2,3-dimethyl-pyrazolone-4-carboxylic acid benzene sulphone hydrazide is obtained by reacting 1-phenyl-2,3-dimethyl pyrazolone-4-carboxylic acid chloride with hydrazine hydroxide, and reacting the resultant hydrazide with benzene sulphonyl chloride. Alternatively it may be obtained by reacting the 1-phenyl-2,3-dimethyl pyrazolone-4-carboxylic acid chloride with benzene sulphone hydrazide.  Alternative radicals at R, R1 and R11 may be methyl, ethyl, propyl, phenyl or naphthyl radicals.
Patent GB-1274069-A (GB)
Title: Electrophotography and photosensitive elements therefor
IPC: G03G5/08
Filed: 1969-06-19
Abstract: 1,274,069. Electroluminescence. KATSURAGAWA DENKI K.K. 19 June, 1969 [27 June, 1968], No. 30987/69. Heading C4S. A photosensitive element for use in electrophotography comprises a plurality of layers bonded together to form a unitary structure having at least a transparent highly insulative layer 8, a photoconductive layer 7, a first transparent electrode layer 6, a layer of screen structure 5, electroluminescent layer 2, and backing electrode 1 such that luminescence of the EL layer on electric field application effects projection of the screen layer image on the p.c. layer. In Fig. 1, a further highly insulative layer 4 and second transparent electrode 3 may be included. In operation a first field across the insulative and p.c. layer deposits a first charge on the former e.g. from a corona discharge electrode, a second field concurrently with the projection of a light image through the insulative layer effects an electrostatic charge image of opposite charge on the insulator, while the screen image may be projected by luminescence of the EL layer (e.g. by A.C. application), during one or both of the first and second field applications, the screen reducing edge effects, the latent image finally being developed to a visible image. The above also ensures elimination of space charge in the p.c. layer. Fig. 2 (not shown), includes third insulator (9) between electrode 6 and p.c. layer 7; Fig. 3 (not shown) includes thicker insulator (10) substituting layer 4, an also layer (9) of Fig. 2; Fig. 5 (not shown) is as Fig. 1 but with insulator (11) between layers 1 and 2, and may include further insulator (12), Fig. 6 (not shown); Fig. 7 (not shown), is a modification of Fig. 3 with insulator (13), and may include insulator (14), Fig. 8 (not shown). Fig. 9 (not shown) includes the basic elements alone. The EL layer may be ZnS: Cu in epoxy resin, electrodes 3 and 6 of vapour deposited Au; layer 4 of photographic film with screen structure 5 provided by AgCl photography; p.c. layer of Se-Te alloy (15% by wt. Te) and insulator 8 of polycarbonate resin. In Fig. 7, substrate (10) and screen (5) are prepared from a glass photographic plate including baking, and electrode 1 is Al.
Patent GB-711336-A (GB)
Title: Improvements in hydraulic brake system
IPC: F16D65/74
Filed: 1952-12-08
Abstract: 711,336. Hydraulic brakes. DUBOIS, M. O., and DUBOIS, B. M. Dec. 8, 1952 [Dec. 14, 1951], No. 31051/52. Class 103(1) A device for insertion in the conduits of hydraulic braking systems to provide constant shoe drum clearance when the brakes are released comprises a cylinder 18 having a stepped bore within which slides a stepped piston 36. The piston 36 has an axial passage therethrough, flow through which is controlled by a valve member 44 pressed against a seat 46 by a spring 53. The spring 53 acts against a screwed member 54, the axial position of which may be adjusted by the end of a screwdriver in slot 55 while the valve member 44 is held by another screwdriver engaged in slot 52. The strength of the spring 53 is usually adjusted so that the pressure required: in the cylinder part 35 to lift the valve 44 is about 200 grams per square centimetre above the pressure created by the brake shoe return springs through the actuator pistons 10 in their release position. Thus when the master cylinder 5 is actuated the stepped piston 36 moves with valve 44 shut until the tail of the valve 49 engages the cylindrical piston 31 of a screwed plug. member 23 whereupon the valve 44 is lifted and there is a direct pressure transmission to the brake actuator cylinders. The position at which the valve 44 is lifted may be adjusted by rotation of the plug 23 the axis of which is eccentric to the part 31. On release of the brakes, the valve 44 shuts as soon as the piston 36 moves away from part 31. If there is subsequent contraction of the brake drum due to cooling, which is sufficient to take up all the usual shoe drum clearance, the pressure on the shoes cannot be greater than that which would cause the lifting of valve 44.
Patent GB-383410-A (GB)
Title: Improvements in and relating to means of applying advertising and other printed matter to display surfaces
IPC: G09F7/16
Filed: 1931-11-10
Abstract: 383,410. Signs ; transfers. FRENKELS, Ltd., 1, Godliman Street, and WOOLIDGE, A. H., 46, Farringdon Street, both in London. Nov. 10, 1931, No. 31162. [Class 3 (ii).] A method of mounting signs on a surface such as a shop window by a transferring process comprises treating cut-out characters d of paper, foil, fabric or wood veneer with an adhesive, and mounting them in a readily detachable manner on a flat support b, preferably of cardboard, with the treated side outwards. The characters may be attached to the support by means of a weak adhesive such as wax, their outer surfaces being coated with a strong water-soluble gum, and the surface to which they are to be transferred being moistened ; heat may be applied during the transferring operation, which will have the effect of evaporating the moisture and also melting the wax. According to modifications, the characters may be temporarily attached to the support by " cutter-crushing " or by perforating them in such a manner as to cause tongues to project into the support ; in the latter case the perforations may be used to enhance the appearance of the sign when viewed by transmitted light. For larger signs the letters may be mounted-on separate supports provided with engaging means for securing correct alignment.
Patent GB-869039-A (GB)
Title: Self-stepping circuits
IPC: H03K3/45
Filed: 1958-10-01
Abstract: 869,039. Circuits employing bi-stable magrietic elements. NATIONAL CASH REGISTER CO. Oct. 1, 1958 [Oct. 23, 1957], No. 31307/58. Class 40 (9). A shifting register or delay line for a single pulse comprises magnetic cores K1 K2, K3, Fig. 1, having rectangular magnetization characteristics, the transfer of the pulse from core to core as a characteristic remanent state " 1 " being effected by a control circuit consisting of further cores Ll, L2 each continuously biased to the remanent state " 0." Each register core K1-K3 includes an interrogation winding r and a feed-back winding f both acting in the same " 0 "-driving sense, while cores K2 and K3 have " 1 "-driving input windings d each connected in series with the feed-back winding on the preceding core. All the cores have output windings s connected to emitter and base of respective transistors M1-M5. Operation of the register is initiated by a single setting pulse applied to serially-connected windings q whereby core Kl is brought to the " 1 " remanent state and cores K2, K3 to the " 0 " remanent state. Core L1 is also temporarily changed to state " 1 " for the duration of the pulse. When the pulse terminates, core L1 is reset to state " 0 " by a bias potential V2 connected to winding b and transistor M4 is brought into the conductive state by the induced output pulse. The collector current of the transistor is applied to the interrogation winding r, of register core K1, and commences to drive this core to state " 0," but due to the provision of resistor Rc in the base circuit the conduction period is insufficient to complete the flux reversal. A voltage pulse is however induced in the output winding s of core Kl and saturates transistor M1 so that its conduction period is appreciable, and the collector current acts in the feed-back winding f of Kl to complete the flux reversal to the remanent state " 0." The collector current of M1 also acts in the drive windings d of cores K2 and L2 and brings both these cores to the remanent state " 1, " the core K2 completing its flux changeover before K1 due to the loading on the latter core. At the completion of the operation, the termination of collector current permits the bias in winding b to restore core L2 to state " 0," this core then inducing an output pulse which renders transistor Mo conductive. Winding p on core L1 is energized as a result and the core driven to state " 1." Subsequently this core is restored to state " 0 " by the bias and a fresh sequence of operations is commenced during which the " 1 " state is transferred from K2 to K3. At the end of the register, an output pulse is developed across resistor Rf. Alternatively the output pulse may be recirculated by connecting the feed-back winding on K3 to a drive winding d on core K1, as shown in Fig. 3.
Patent GB-1503223-A (GB)
Title: Formation of buried layers in a substrate
IPC: H01L21/761
Filed: 1975-07-26
Abstract: 1503223 Impurity diffusion in semiconductor INTERNATIONAL COMPUTERS Ltd 19 July 1976 [26 July 1975] 31358/75 Heading H1K The invention concerns the manufacture of buried layers in semiconductors. A semiconducting oxide layer 4 containing an impurity having second conductivity characteristic is provided on a semiconducting oxide layer 2 doped with an impurity of first conductivity characteristic, and in openings (3) Fig. 3 (not shown) provided in the layer 2; both the impurities are then diffused simultaneously in the substrate, the layer 2 acting as a diffusion barrier for the impurities in the layer 4; after removing the layers 2, 4, an epitaxial layer (7) is grown on the substrate, and lastly the substrate is subjected to a diffusion step in which the faster diffusing impurity reaches the outer surface of the epitaxial layer. In the particular embodiment, the semiconducting layers 2, 4 are of silicon dioxide doped with arsenic and boron respectively, boron having a higher rate of diffusion in a single crystal silicon substrate 1. After the common diffusion step, typically at 1250 C. for 5 hours, resulting in the formation of deep P+ regions 5, Fig. 5 in the vicinity of the openings (3) and shallow N+ regions 6, the semiconductor layers 2, 4 and also a twin layer of the substrate surface, are removed by chemical etching, this being followed by epitaxial deposition of an N-type layer (7) of silicon. The P+ regions (5) and the N+ regions (6) diffuse into the epitaxial layer during a further diffusion step, the P + regions extending to the free surface of the epitaxial layer.
Patent GB-617710-A (GB)
Title: Improvements in and relating to electro-pneumatic contactors and switches
IPC: H01H33/32
Filed: 1945-10-22
Abstract: 617,710. Gas-blast switches; shock-absorbing. ENGLISH ELECTRIC CO., Ltd., MARDIS, P. L., and SMITH, S. A. Oct. 22, 1945, No. 31368/46. Divided out of 27819/45. [Class 38 (v)] An electro-pneumatic contactor of the type in which the contacts are located in an arcshoot, and closed against spring-pressure by compressed air supplied to an operating cylinder through a magnet-valve, is provided with pneumatic buffering means. When the magnet-valve 26 is de-energized, spring 24 restores the valve 20, closing the air inlet port 33 and opening passage 22 to a reservoir 23 which has an exhaust port 27 constricted by an adjustable needle valve 28, so that as spring 3 forces the piston 2 down to open the switch, pressure builds up in the reservoir to bring the moving parts to rest gradually. The exhaust air which escapes past the needle valve 27 is lead by pipes 29, 31 to a nozzle 32 at the back of the arc-shoot, and directed across the gap between the contacts 7, 13 to assist in blowing out the arc. A magnetic blow-out coil 15 is connected between the fixed contact 13 and the arcing horn 14. In an alternative construction, Fig. 2, buffering pressure is built up in the cylinder of an auxiliary piston attached to the main piston 2.
Patent GB-640956-A (GB)
Title: Improvements in or relating to apparatus for removing flash from gramophone records
Inventor: HEATH HERBERT GERALD
IPC: B29D17/00
Filed: 1947-11-27
Abstract: 640,956. Delivering articles from hoppers. DECCA RECORD CO., Ltd. Nov. 27, 1947, Nos. 31386/47 and 29008/48. [Class 78 (i)] [Also in Groups XXIII and XXXVIII] In apparatus for removing flash from the edges of gramophone records, the records are fed singly from a gravity-hopper by a mechanism comprising reciprocating sets of fingers. The hopper consists of two plates 51, and three sets of fingers 52, 62 separated vertically by the approximate width of a record are provided. The fingers 62 are carried by members 61 and the fingers 52 by members 53. These members are mounted in a stationary member in which they are reciprocated in opposite phase by engagement with cams 65 secured by bolts 70 to rotating drums 10, 11, 12 forming part of the apparatus. Each bolt 70 passes through a slot and a number of tapped holes are provided to receive it, thus enabling relative angular adjustment between each cam and its drum to be effected. The records drop on to a belt conveyer after they leave the apparatus.
Patent GB-466766-A (GB)
Title: Improvements relating to eyebrow tweezers
IPC: A45D26/00
Filed: 1936-11-17
Abstract: 466,766. Pliers. KURLASH CO., Inc., and BELDUE, W. J. Nov. 17, 1936, No. 31391. [Class 61 (ii)] [Also in Group VI] Pliers for plucking eye brows comprise a pai of crossed members pivot ed together at 3 and hav ing loop handles 7, jaws 4 spaced apart at 4a nea: the pivot and converg ing towards the terminal flat gripping parts 5 an( handle shanks 1, bent o: offset at 6 in the plan! of movement.
Patent GB-871544-A (GB)
Title: Improvements in electric analogue integrators
IPC: H03M1/00
Filed: 1957-10-08
Abstract: 871,544. Measuring systems. ELECTRICITE DE FRANCE. Oct. 8, 1957 [Oct. 10, 1956], No. 31482/57. Class 40 (1). [Also in Group XXXVI] Telemeasurement of a gas or water pressure is obtained by mechanically coupling the measuring apparatus with a potentiometer 22, which controls the charging and discharging of a condenser C, the rate being determined in a comparator TR 2  and telemetered by the chopping of waves from an oscillator 52 in integrating apparatus (see Group XXXVI).
Patent GB-488151-A (GB)
Title: Method and apparatus for purifying liquids
IPC: D21F1/66
Filed: 1937-11-17
Abstract: 488,151. Filters. WALLQUIST, I. Nov. 17, 1937, No. 31597. [Class 46] A method of filtering liquids employing an endless filtering cloth running over two or more liquid-pervious rotary drums each in a container, is characterized in that a layer of particles formed upon the portion of the cloth engaging the drum of the first container is used in the passage of the cloth over the second drum to filter liquid supplied to the container of the second drum. As shown in Fig. 1, two basins 1a, 1b contain, respectively, two pervious drums 2a, 2b over which runs an endless filtering cloth 5. Liquid enters the basin 1a through inlet 8a and passes through the cloth 5 and the surface of the drum 2a to the interior of the drum, from which it flows through pipe 9a to the basin 1b. Coarse particles form on the cloth passing over the drum 2a, and act as a filter to catch finer particles as the liquid passes from the basin 1b through the drum 2b. The cloth passes over a roll 6 after which the layer of particles is removed by means of a scraper 18, or by means of a spray pipe 11. In the arrangement shown in Fig. 7, three drums and three containers are provided, the first drum and container being used in connection with an auxiliary supply of liquid with coarse particles, for use when the liquid to be filtered does not contain sufficient coarse particles to form a satisfactory layer on the filtering cloth 5. The auxiliary supply enters the first container at 8a and is discharged through outlet 3a, or may pass through pipe 9a to the second container. The liquid to be filtered enters the second container through pipe 8b and passes through both the second and third drums. Endless cloths 12a, 12b support the layer 10 of particles on the cloth 5 as it passes between the drums.
Patent GB-490839-A (GB)
Title: Improvements in and relating to the conversion of organic substances into fine powder
IPC: F26B5/16
Filed: 1936-11-18
Abstract: Oils, fats, waxes, resins, petroleum products (e.g. paraffins, ceresin, lubricating oils), natural or artificial hydrocarbons, tars, asphalts, or their derivatives are dispersed in water or vice versa, and the dispersion is treated with a pulverulent body, e.g. calcium oxide, capable of binding the water so that the whole mass forms a homogeneous finely-divided powder.  In the cases of (a) petroleum products, the powder obtained may be extracted to obtain various fractions by solvents, e.g. alcohols, ketones (e.g. acetone), acetates (e.g. ethyl or methyl acetate), propane, butane, nitrobenzene, furfural, cresol, chlorax, or sulphur dioxide; (b) asphalts, oils, fats, paraffin, pacura or pitch, the powders may be incorporated in constructional materials, e.g. concrete, mortar, plaster, tiles, road surfacing; (c) natural or artificial hydrocarbons and their derivatives of antiseptic, insecticidal, fungicidal, "aggressive," or toxic character, the powders may be used directly.ALSO:Resins or their derivatives are dispersed in water or vice versa and the dispersion is treated with a pulverulent body, e.g. calcium oxide, capable of binding the water so that the whole mass forms a homogeneous finely-divided powder.ALSO:Oils, fats, waxes, resins, petroleum products, (e.g. paraffins, ceresin, lubricating - oils), natural or artificial hydrocarbons, tars, asphalts, or their derivatives are dispersed in water or vice versa, and the dispersion is treated with a pulverulent body, e.g. calcium oxide, capable of binding the water so that the whole mass forms a homogeneous finely-divided powder.  In the case of asphalts, oils, fats, paraffin, pacura or pitch, the powders may be incorporated in constructional materials, e.g. concrete, mortar, plaster, tiles, or road surfacing.ALSO:Natural or artificial hydrocarbons or their derivatives are dispersed in water or vice versa and the dispersion is treated with a pulverulent body, e.g. calcium oxide, capable of binding the water so that the whole mass forms a homogeneous finely-divided powder.  The powders obtained from natural or artificial hydrocarbons and their derivatives of antiseptic, insecticidal, fungicidal, "aggressive," or toxic character may be used directly.
Patent GB-209067-A (GB)
Title: Improvements in or relating to means for regulating direct current electric machines
IPC: H02P7/26
Filed: 1923-12-18
Abstract: 209,067. Siemens Schuckertwerke Ges. Dec. 23, 1922, [Convention date]. Speed maintaining systems. - A direct-current motor 1 having a field winding 2 is automatically regulated for constant speed by causing the grid 6 of a thermionic valve 4, 5 placed in shunt to the motor field winding to be acted upon by a tachometer dynamo opposing an adjustable battery potential. The dynamo and battery are not shown in the Figure. Specification 234,146 is referred to.
Patent GB-1503808-A (GB)
Title: Process for preparing a zeolitic composition useful as a hydrocarbon conversion catalyst
IPC: B01J20/18
Filed: 1975-07-30
Abstract: 1503808 Zeolitic hydrocarbon conversion catalyst W R GRACE & CO 30 July 1975 [2 Aug 1974] 31948/75 Heading BIE A hydrocarbon conversion catalyst is formed by (a) adding sulphuric acid and aluminium sulphate to aqueous sodium silicate to produce a silica sol of pH 2.0-3.2 and at a rate to avoid gel formation before step (e); (b) adding clay to the silicate solution or sol before, during or after step (a); (c) preparing an aqueous slurry of pH 3 to 5 of a crystalline zeolitic aluminisilicate; (d) mixing the zeolite slurry with the clay-sol slurry to prepare a feed slurry of pH 2.5 to 3.5; and (e) spray drying. The product may be washed and exchanged with rare earth metal to remove sodium. The composition may contain 10-65% wt. clay and 5-60 wt. % of zeolite. The zeolite may be faujasite. The clay may be kaolin, halloysite or montmorillonite and may be acid- or heat-treated and of a particle size such that 60-80% of particles are below two microns.
Patent GB-617743-A (GB)
Title: Overload release mechanism for sewing machines
IPC: D05B69/36
Filed: 1946-10-31
Abstract: 617,743. Overload-release clutches. SINGER MANUFACTURING CO. Oct. 31, 1946, No. 32342. Convention date, Jan. 10. [Class 80 (ii)] [Also in Group VII] The loop-taker shaft 46 of a sewing-machine is driven from a shaft 38, in line with it, through an overload-release clutch almost identical with that of Specification 617,742, the disc 91 of the clutch being notched for engagement by a driving claw member 86 on the shaft 38 and the collar 92 being secured to the shaft 46. A detent 114 can be pressed into engagement with a notched wheel 95 to hold the shaft 46 stationary during resetting of the clutch.
Patent GB-938395-A (GB)
Title: Improvements relating to control rods for use in nuclear reactors
Inventor: BARDEN STANLEY EDGAR
IPC: G21C7/10
Filed: 1959-09-24
Abstract: 938,395. Reactor control rods. A.E.I.-JOHN THOMPSON NUCLEAR ENERGY CO. Ltd. Sept. 12, 1960 [Sept. 24, 1959], No. 32551/59. Class 39 (4). A reactor control rod has a core of neutron moderating material, e.g. graphite, enclosed in a sheath of a material which strongly absorbs neutrons, e.g. a ferrous alloy containing boron.
Patent GB-1032791-A (GB)
Title: Noduled board
Inventor: MORRISON WALTER
Filed: 1962-08-24
Abstract: 1,032,791. Laminates and laminating. FIBREGLASS Ltd. Aug. 1, 1963 [Aug. 24, 1962], No. 32571/62. Heading B5N. A laminate comprises a main layer of mineral fibre nodules such as glass fibre nodules bonded together by a bonding agent and having one or both surfaces covered by a thinner layer of flexible material. The nodules are pieces chopped from a mineral fibre bat, board or sheet whose fibres have been bonded by a bonding agent, and the flexible material may be a glass fibre tissue, a scrim cloth or canvas. Suitable bonding agents are thermosetting resins such as phenol-formaldehyde, thermoplastic resins such as polyvinyl acetate or a bituminous material. The laminate is made by placing the flexible material on an endless foraminous or other conveyer, placing the nodules on the layer, applying a bonding agent, such as a sprayed solution of phenol-aldehyde resin, to the nodules before or after placing them on the layer, adding another flexible layer if required, passing the layers beneath a compressing roller and heating in an oven.