baber/WOPTO huggingface dataset:
Patent GB-1274856-A (GB)
Title: Improvements in capacitive displacement transducers
Inventor: WOLFENDALE PETER CALEB FREDERI
IPC: G01D5/241
Filed: 1968-10-17
Abstract: 1,274,856. Displacement transducers. P. C. F. WOLFENDALE. Oct. 17, 1969 [Oct. 17, 1968], No.49181/68. Heading G1N. In a capacitive displacement transducer comprising two fixed cylindrical electrodes 1, 2 Fig. 1 and an internal coaxial cylindrical, movable electrode 3 having flanges 4, 5 at the ends forming guard rings. The coupling between the movable electrode and the fixed electrodes is adjustable by a screw 6 which is subsequently locked in position by a plug 7 pressed down by a cam 8 driven by a screw 9 located inside a shaft 10 carrying the movable electrode 3. In use, the shaft 10, the guard rings 4, 5 and a surrounding housing 11 are earthed, an A. C. voltage is fed to electrodes 1, 2 and the potential of electrode 3 is indicative of its axial position, the electrodes being insulated by sapphire balls 19. The adjusting screw 6 may be made of conducting or insulating material: the electrodes may have other shapes and number: the transducer may be made to measure angular displacements.
Patent GB-1536316-A (GB)
Title: Peripheral vision horizon device
IPC: G01C23/00
Filed: 1976-11-29
Abstract: 1536316 Artificial horizons CANADIAN NATIONAL DEFENCE MINISTER OF 29 Nov 1976 [1 Dec 1975] 49659/76 Heading G1F A device for indicating horizon by way of a projected bar of light comprises a housing 30 having a first part 32 attachable to e.g. a cockpit and second part 34 rotatably coupled to the second part for movement about a first axis 36, a cylindrical lens in a carrier 38 which is coupled to the second part 34 for rotation about a second axis 40, a light source and optical system for producing a beam of light along the second axis, and a control means coupled to the housing and operable to rotate the second part and the carrier in response to deviation of the second and first axes respectively from the horizontal. The device shown is installed in a cockpit with the axis 40 in fore-aft direction. The housing part 32 has attached a pitch control motor 42 for moving the part 34, a lamp holder 52, a light baffle 50, a cooling fan 54 and a reader 46 which produces signals dependent on the rotation of the motor 42. The housing part 34 has attached a roll control motor 44 with a gear and shaft assembly 64-80 for rotating the lens carrier 38, and a reader 48 which produces signals dependent on the rotation of the motor 44. A gyroscopic device (not shown) is within the housing part 32 and develops two signals corresponding to pitch and roll. Signals from the gyroscopic device are compared with those from the reader in null measurement circuits (102, 105, 114), Fig. 7 (not shown) to produce signals for servo-amplifiers (110, 117) for driving the control motors 44, 42 to produce deflection of the light bars (31, 33) Fig. 1, (not shown). The light bar may be split into two bars and may comprise a coloured or shaped portion. The light source may be a xenon lamp or a ruby laser.
Patent GB-1081673-A (GB)
Title: Improvements in or relating to pressurised nuclear reactor installations
Inventor: WINDLE GEOFFREY VINCENT
IPC: G21C1/20
Filed: 1963-12-16
Abstract: 1,081,673. Reactor pressure vessels. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Dec. 8, 1964 [Dec. 16, 1963], No. 49660/63. Heading G6C. In a superheated steam generating, heavy water moderated, nuclear reactor power plant, provision is made to prevent the escape of radio-active contaminated coolant into the atmosphere following a fault in the coolant circuit. The fault is considered to have two separate phases, in the first, a large column of uncontaminated coolant high pressure is permitted to escape, in the second phase, the reactor fuel element sheaths fail, due to loss of coolant, and fission products are released with a small volume of low pressure coolant which is prevented from escaping. Steam may escape from the coolant circuit through condensing water pools for a period of 20 seconds, following this, pressure-sensitive elements close vents to the atmosphere and steam and fission products, subsequently discharged from the reactor are retained in the turbine hold, designed to withstand low pressures. A relief valve is mounted at the end of the turbine hold remote from the reactor from which steam and air may escape initially. The resulting reduction in pressure is such that the valve closes before contaminated vapour reaches it. If a failure occurs within the core it is considered that fission products will be released immediately as low pressure. To prevent escape in this instance, burstable panels are mounted over the vents which retain the contaminated vapours. High pressure faults of the first type would remove the panels to permit the pressure controlled vents to operate.
Patent GB-1365695-A (GB)
Title: Stable solutions of calcium salts of carboxylic acids
IPC: C09F9/00
Filed: 1971-10-26
Abstract: 1365695 Mixed calcium salts TENNECO CHEMICALS Inc 26 Oct 1971 [1 Dec 1970] 49670/71 Heading C2C [Also in Division C4] Mixed calcium salts of at least one branchedchain olefinically-unsaturated or saturated aliphatic monocarboxylic acid (6-18 C), all of the acid being branched at the same chain position, and a minor molar proportion of calcium salt of at least one olefinically unsaturated or saturated aliphatic monocarboxylic acid dissolved in an organic solvent may be used as stable drying agents for paints or stabilizers for synthetic resins. The acid forming the second salt when aliphatic is branched at a different chain position from the first salt and such different chain position is either a branch in the α-position, two branches in the α-position, or a branch at #- or a further removed position relative to the carboxylic group. The salts may be of 2-ethylbutanoic, 2-methylpentanoic, 2-ethyl-4-methylpentanoic, 2-propyl heptanoic acids and 2- ethyl-hexenoic acids, mixed trialkyl acetic acids with 9-11 C, and 10 C atoms, 2,2-dimethylpentanoic, 3,5,5-trimethyl hexanoic, 3-ethyloctanoic, 3-methylhexanoic, 4,5-dimethyl hexanoic, 4-ethylnonanoic and the C 8 , C 10  and C 13  oxo acids. Inert organic solvents are listed, and the salts may be prepared separately and mixed or prepared in situ. Additives such as alkyl and phosphates and polyoxyalkylene glycols may be present. Examples describe mixtures of calcium salts of 2-ethyl hexanoic acid and naphthenic acid, oxo C 8  acid and naphthenic acid, mixed trialkyl acetic acids and oxo C 8  acid, 2-ethylhexanoic and 3,5,5-trimethyl hexanoic acid, 2-ethyl hexanoic and mixed trialkyl acetic acid, trialkyl acetic acid and napthenic acid, and 2-ethylhexenoic and naphthenic acid in solvents.
Patent GB-497175-A (GB)
IPC: C08F299/04
Abstract: Moulding compositions comprise a polyhydric alcohol polyester of an olefine a-b-dicarboxylic acid and a polymerizable a-substituted ethylene compound of the formula CH2=CR1R2 miscible therewith.  R1 is an acyl, aryl, carboxyl, halogeno, acyloxy, carbalkoxy, alkoxy, aldehydo, or nitrilo group, and R2 is hydrogen or an alkyl group. Preferred compositions comprise a vinyl ester, an acrylic or methacrylic ester, styrene, or a vinyl ketone together with a polyester from a dihydric alcohol (e.g. mono-, di-, or triethyleneglycol, 1 : 2- or 1 : 3-propyleneglycol, monoethylin, or mixtures thereof) and maleic, fumaric, citraconic, or itaconic acid; part of the acid may be replaced by phthalic or succinic acid.  There may also be incorporated catalysts, e.g. per-compounds such as benzoyl, acetyl, acetyl-benzoyl, and phthalyl peroxides; fillers, e.g. cellulose, asbestos, chalk, ground glass, barytes; dyes, pigments, and plasticizers.  Air and oxygen may be used as catalysts. The products may be used for moulding, e.g. by injection, or for impregnation, e.g. of cloth and paper.  In examples: (1) diethylene glycol and maleic acid are condensed in illuminating gas, and the product mixed with vinyl acetate and benzoyl peroxide with or without a-cellulose flock; (2) diethyleneglycol and maleic acid are condensed in carbon monoxide, the product mixed with vinyl acetate and benzoyl peroxide, and moulded into knife handles; (3) triethyleneglycol and maleic anhydride are condensed in carbon monoxide, and the product mixed with vinyl acetate, benzoyl peroxide, and a-cellulose flock; (4), (5) ethyleneglycol and (4) maleic anhydride or (5) fumaric acid are condensed in carbon dioxide, and the products mixed with vinyl acetate and benzoyl peroxide; (6) propyleneglycol and maleic anhydride are condensed in carbon dioxide and the product mixed with vinyl acetate and benzoyl peroxide; (7)-(9) diethyleneglycol maleate polyester is mixed with benzoyl peroxide and (7) styrene, (8) methyl acrylate, (9) methyl methacrylate; (10) diethyleneglycol maleate polyester is dissolved in isopropenyl methyl ketone; (11) paper or canvas is soaked in a mixture of diethyleneglycol maleate polyester, vinyl acetate, and benzoyl peroxide, and then laminated by heat and pressure.
Patent GB-1187186-A (GB)
Title: Improvements relating to Float Controlled Valves of Flushing Cisterns or Tanks.
Inventor: FOGG CLIFFORD CYRIL
IPC: E03D1/33
Filed: 1968-10-21
Abstract: 1,187,186. Valves. C. C. FOGG. 21 Oct., 1968, No. 49754/68. Heading F2V. The valve actuating float 5 of a flushing cistern operates in an open-topped chamber 14 under the action of water which flows over lip 14a when the cistern is almost full, thus the valve (v) remains fully open during most of the filling cycle and is finally closed rapidly. A non-return valve 28 effects discharge of the chamber when the water level in the cistern falls below the level of this valve. In a modification (Fig. 4, not shown), a syphon tube re places valve 28. Float 5 has an open bottom.
Patent GB-1173678-A (GB)
Title: Circuit Arrangement for Turning Off A.C. Operated Controlled Rectifiers.
IPC: H02M5/257
Filed: 1967-11-02
Abstract: 1,173,678. Control systems for consuming apparatus. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 2 Nov., 1967 [5 Not., 1966], No. 49911/67. Heading H2H. [Also in Division H3] A circuit arrangement for turning off controlled rectifiers when used in an alternating current system comprises a turn off circuit for each controlled rectifier, each turn off circuit including an auxiliary controlled rectifier and all the turn off circuits sharing a common capacitor. A load 2 is supplied from an A.C. source 1 by way of a pair of back-to-back connected thyristors 3, 4. In a half-cycle of the supply when, say, the thyristor 4 is non-conductive, the common turn off capacitor 53 will be charged by way of an auxiliary thyristor 34 associated with the turn off circuit for the thyristor 3. In the following half-cycle, when the anode of the thyristor 4 is positive to its cathode, the application of a gating signal to the thyristor will render it conductive, thereby energizing the load 2. If, in the positive halfcycle, it is desired to turn off the thyristor 4, a gating signal is applied to thyristor 44 to render it conductive. The capacitor 53 then discharges through the turn off thyristor 44 and through the main thyristor 4, the discharge current flowing through the thyristor 4 in the opposite direction to the load current. The thyristor is thus restored to its non-conductive state. Similar operation occurs in opposite half-cycles of the A.C. in the part of the circuit using thyristors 3, 34.
Patent GB-1325586-A (GB)
Title: Apparatus for hot pressing materials
IPC: B28B3/02
Filed: 1970-10-21
Abstract: 1325586 Tunnel furnaces MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 21 Oct 1970 [21 Oct 1969] 50048/70 Heading F4B Pre-shaped bodies 48, Fig. 3, mounted in die assembles 12 carried on roller mounted supports 13, are sintered and hot pressed whilst passing through a tunnel furnace 10 including one or more presses 11, 11<SP>1</SP>, Fig. 1, within its firebrick lined heating chambers 21. The temperature in each heating chamber 21 is independently controllable, and the length of each chamber is the same as the length of each support. A ram 15 moves an abutting line of supports intermittently through the chambers, each stroke of the ram being equal to or an integral multiple of the length of a chamber. Rail means 33 allow the presses to be moved from one chamber to another. Each press has a fixed upper ram 20, 20<SP>1</SP> and a retractable lower ram which on actuation urges upwardly movable plunger assembly blocks 39, 40, see Fig. 3, carried by that support 13 positioned above it, which in turn urge the punches 38, 44 of its associated die assembly 12 against the pre-shaped body 48 which is surrounded by inert alumina or zirconia powder. Each block 40 is made of heat resistant steel and each block 39 of silicon carbide, silicon nitride, mixtures thereof, or alumina. The die 43, punches 38, 44 and other die assembly parts 45, 47 are also made of this or of zirconia. The preshaped bodies may be of ferromagnetic or ferroelectric materials such as ferrites, barium titanate or lead-zirconate titanate. Specific values of the furnace and press operating conditions and the die dimensions are quoted.
Patent GB-1086359-A (GB)
Title: Improvements in or relating to a mixer for solid, liquid or pasty products
IPC: B01F27/75
Filed: 1964-12-09
Abstract: 1,086,359. Mixing appliances. SOCIETE FIVES LILLE-CAIL. Dec. 9, 1964 [Dec. 10, 1963], No. 50080/64. Heading B1C. A batch or continuous discharge mixer for pasty material has two or more rotors 6 which additionally rotate about a common axis co-axial with the chamber 3. The rotors have paddle-like radial blades 8 arranged on one or more helices around their shafts 5 at an angle thereto, and interdigitating. The rotors are journalled in rotatable body ends 9 supported on the chamber 3 by rollers 13 and rotated by a ring gear 12 driven through a pinion by a variable speed motor which may be controlled by the rate of flow of the material; the rotors are rotated by engagement of gears as at 10, 11 with an internally toothed fixed ring gear 18. A heat exchange fluid may be circulated through the hollow shafts 5 and a jacket 4 round the body 3, and there may be heat-exchange tubes passing through the mixing chamber and rotating with the body ends 9. An embodiment having three rotors of which one is coaxial with the chamber and is keyed to and rotates with the ends 9 is described (see Figs. 4 and 5, not shown).
Patent GB-1041378-A (GB)
Title: Haymaking or like machines
Inventor: GOODALL CHARLES
IPC: A01D78/00
Filed: 1963-12-19
Abstract: 1,041,378. Haymaking machines. GOODALL'S PATENTS Ltd. Dec. 4, 1964 [Dec 19, 1963; Jan. 23, 1964], Nos. 50129/63 and 2921/64. Heading A1F. A rake-wheel type of haymaking machine comprises two or more juxtaposed frames 10, 11 one of which is attached to the power-lift links 13 of a tractor 14, the other frame or frames being hinged to the first about longitudinal hinges 15, whereby the side frame(s) can be folded upwardly to reduce the travelling width during transport. In Figs. 2 and 3, the side-frame 11 is folded up as an incident to lifting the main frame 10 by providing a pulley 18 mounted on a structure 16 carried by the frame 10, the pulley being entrained by a cable 19 connected between a fixed point 20 on the tractor and a point on the frame 11. The pulley 18 is adjustable by a screwjack 17 to ensure that the cable is slack when the frame 11 is lowered, the restposition of the frame 11 being controlled by a stop 20a. In a modification the side frames are raisable by hydraulic jacks connected between the structure 16 and the frames and supplied with fluid from the tractor hydraulic system.
Patent GB-1324385-A (GB)
Title: Supporting and angular adjusting structure for axially loaded  shafts and variable blade angle bladed rotor structures
IPC: F01D7/00
Filed: 1970-10-22
Abstract: 1324385 Axial-flow fans and compressors; gas turbine ducted fan engines GENERAL ELECTRIC CO 22 Oct 1970 [23 Oct 1969] 50143/70 Headings F1C F1J and FIT A variable pitch bladed rotor assembly, e.g. for the fan (as shown) or the fan turbine of a turbofan engine or for the compressor or turbine of a gas generator, comprises a disc 28, Figs.1 and 4, fixed to shaft 24, and a disc 30 rotatably mounted on the shaft. Each disc includes a respective surface of revolution 70, 72 about rotor axis 74, which co-operates with a respective surface of revolution 76, 78 formed on the blade root about blade axis 88. The curvature of surfaces 76, 78 is less than that of surfaces 70, 72 so that point contact is established therebetween. The surfaces 70, 72, 76, 78 are part spherical, but the surfaces 70, 72 instead may be frusto-conical and the surfaces 76, 78 segments of other surfaces of revolution about the blade axis. Annular ledges 110 maintain the radial position of the blades when the rotor is at rest. Each blade root carries a respective pinion 90 in mesh with gear rings 92, 94 on discs 28, 30. The blade root is connected to the pinion by a member 100 which has radial arms 102 engaging a recess in the pinion and which is adequately flexible to isolate the pinion from blade loadings. Moreover, the blade root has a pair of lugs (96), Fig. 5 (not shown), received in slots (98) in the pinion. Pitch adjustment of the blade is effected by angularly moving the disc 30 about the shaft 24 by means 38 comprising a series of circumferentially-spaced fluid-actuated adjustors (113), Fig.6 (not shown). Blade platforms 50 have curved upstream and downstream ends (58), Fig.2 (not shown), located in complementary scollops formed in a ring 52 movable relative to disc 28. The blades are retained in either of their two pitch limit positions by a mechanism 40, Figs. 1 and 7, having weighted links 120 which, due to centrifugal effects, maintain rings 117, 122, connected to disc 30 and shaft 24 respectively, in their chosen relative angular position. The mechanism may instead be arranged to operate unilaterally to bias the blades towards only one of the limit positions.
Patent GB-1154902-A (GB)
Title: Improvements in or relating to a process of Thermographic Copying
Inventor: VRANCKEN MARCEL NICOLAS
IPC: B41N1/24
Filed: 1965-06-22
Abstract: 1,154,902. Thermographic reflex processes. GEVAERT-AGFA N. V. June 22, 1966 [June 22, 1965; Nov.26, 1965], Nos.26467/65 and 50442/65. Heading G2C. A thermographic reflex proeess which comprises reflex exposing a heat-sensitive material comprising a layer of gelatine or a gelatine derivative and a substance which absorbs radiation and converts it into heat to an original which imagewise reflects radiation used in the exposure so that the gelatine is heated imagewise heated and becomes more water-absorptive or water-soluble in the heated areas. The exposure used is preferably a flush exposure of less than 10<SP>-1</SP> seconds consisting mainly of visible light and this light is absorbed by the substance preferably carbon black or colloidal silver, in the gelatine layer. The exposed material may be developed by (i) rubbing with water to remove the heated areas, contacting the developed material with a dye layer which adheres to the remaining gelatine to produce a spirit duplicating master. (ii) dipping in water and transferring the heated gelatine areas on to Japan paper to form a stencil (iii) transferring the heated gelatine areas to a receptor sheet and then contacting this transfer sheet with a dye layer to produce a spirit duplicating master. Multi-colour originals may be produced by using materials containing cyan, magenta and yellow dyes in the gelatine layers. Preferably the gelatine used is that disclosed in Specification 985,933.
Patent GB-1361009-A (GB)
Title: Data storage system
IPC: G11C29/00
Filed: 1971-11-01
Abstract: 1361009 Data storage LICENTIA PATENTVERWALTUNGS GmbH 1 Nov 1971 [30 Oct 1970 28 Nov 1970 (2)] 50717/71 Addition to 1307418 Heading G4C A digital electric data storage system in which a large number of storage cells include some defective cells owing to the manufacturing process, has switching means which ensure that nothing is written into or read from the defective cells. This patent is a patent of Addition to Specification 1,307,418. The system may be formed of integrated semi-conductors and in Fig. 1 a word is formed of seven cells E11-E17, E21-E27, each cell having up to three standby cells ZE11 - 13, ZE21-23 to compensate for faults. Each cell is connected to a switching device S (shown in detail in Fig. 2) which is connected to a read in/ read out register R. If a cell is defective it gives a special signal on its lines al, a1-a7, a7, e.g. both read binary 1, on being triggered by circuit D. Alternatively a defective cell could carry a potential differing from 0 and 1 or deliver a signal on another lead. The switching device blocks the output from the defective cell and replaces it in the register R by the data from the standby cell. Writing into the cells is effected in a similar manner using a special circuit (Fig. 3, not shown). In another embodiment (Fig. 6, not shown) each word is divided into sub words each having its own standby cell and in a further embodiment (Figs. 7 and 8, not shown) the positions of the defective cells are stored in further cells. These positions may be detected by a test program after manufacture and the further cells may be read only memories. Parity checks are mentioned.
Patent GB-1044190-A (GB)
Title: Improvements in and relating to electromagnetic contactors
IPC: H01H50/20
Filed: 1963-12-24
Abstract: 1,044,190. Electromagnetic contactors. CUTLER-HAMMER Inc. Dec. 24, 1963 [Dec. 24, 1962], No. 51020/63. Heading H2B. The subject matter of this Specification is identical with that of Specification 1,044,207 but the claims differ.
Patent GB-1275582-A (GB)
Title: Improvements relating to twine tying machines
IPC: B65B13/18
Filed: 1969-10-21
Abstract: 1275582 Cams B H BUNN CO 21 Oct 1969 [25 Nov 1968] 51621/69 Heading F2K [Also in Division B8] The twine arm 16 of a twine tying machine (see Division B8) is mounted on a shaft 15 connected by gears and sprockets to a drive transmitting wheel 38 having rollers 40, 41 projecting from opposite sides thereof, which rollers are positively engaged by rises and falls 30, 31 on continuously rotated plate cams 25, 26 to rotate the wheel 32 and are engaged by dwell portions 29 on the cams to hold the wheel 38 against rotation, thus intermittently rotating the shaft 15.
Patent GB-1451050-A (GB)
Title: Insulation of electrical conductors
IPC: H01B13/06
Filed: 1972-11-09
Abstract: 1451050 Insulated conductors REYROLLE PARSONS Ltd 1 Nov 1973 [9 Nov 1972] 51749/72 Heading H1A [Also in Division H2] An assembly of conductors 1 each with its own insulation 2 is surrounded by resin-bonded type insulation 3, heat expansible sections 5 and optionally, a heat shrinkable layer 4, and a heat-shrinkable or non-heat-stretchable layer 6. The application of heat causes the insulation 3 to be consolidated and moulded around the conductors. The heat-expansible elements may be removed after the heating step. Fig. 2 (not shown) shows several layers of heat-shrinkable material (4) disposed within the resin-bonded insulation (3) in addition to the outer layer 4 of Fig. 1. The insulation 3 may be of resin-bonded mica, the heat-shrinkable layers 4, 6, of prestretched ethylene terephthalate tape; the heatexpansible material may be silicone rubber, and non-heat-stretchable material, if used, may be woven glass tape. The insulated windings, or portions thereof, or the end . windings of dynamo - electric machines, e.g. large turbo-alternators may have insulation applied by one of the methods described, which may also be used in applying interstrip insulation 2 about the conductors 1 in Fig. 1.