baber/WOPTO huggingface dataset:
Patent GB-454923-A (GB)
Title: Electrical insulating material
IPC: H01B3/44
Filed: 1935-03-08
Abstract: Paper, fabric, yarn, &c., in wound form, is impregnated with monomeric styrene, with or without a plasticizer, the styrene is polymerized in a closed vessel and the material is unwound while hot, subjected to treatment for removal of surplus polystyrene and rewound, preferably after calendering.  For example, a roll of paper &c., preferably partially acetylated, is impregnated with a mixture of styrene and chlorinated diphenyl which is polymerized in a closed vessel filled with the mixture.  Polymerization is effected gradually at 120 DEG  and the material is unwound while hot and passed through a bath of solvent, e.g. monomeric styrene, chlorinated diphenyl, benzene, &c. to remove surplus polystyrene and to restore the fibrous nature of the material.  On its way to the impregnating-bath, the paper &c. is preferably passed through an atmosphere of styrene vapour which is continuously pumped off and condensed. Specifications 429,611, [Group XXXVI], 436,084; and 449,868, [Group XXXVI], are referred to.
Patent GB-248188-A (GB)
Title: Improvements in or relating to open domestic fireplaces
IPC: F24B1/193
Filed: 1925-03-18
Abstract: 248,188. Hodsman, H. J. March 18, 1925. Burners, applications of. - In an open fireplace for burning gas coke and similar fuels a removable tubular bunsen burner 4 is arranged to direct flames horizontally into the bottom of the fuel for lighting purposes.
Patent GB-1023732-A (GB)
Title: Improvements in cooking appliance or toaster
IPC: A47J37/06
Filed: 1964-02-21
Abstract: 1,023,732. Electric toasters. GENERAL ELECTRIC CO. Feb. 21, 1964 [Feb. 25, 1963], No. 7317/64. Heading A4D. [Also in Division H5] In a toaster, a flat narrow electric heating element 32 emits radiant heat which is reflected on to either side of a bread supporting rack 24, having a shield 28, to prevent direct radiation from reaching the rack. Heater 32 is supported at its middle and ends so that its upper median line lies at the focus of parabolic curve 46d. Mirror 46 is of bright aluminium and the section 46d has plane extensions 46a, b, c, e and f. Further plane mirrors 8, 38 and 40, the latter being of low reflectivity and acting as a crumb-tray, are positioned beneath rack 24.
Patent GB-673424-A (GB)
Title: Improvements in methods of tracing leaks in vacuum vessels and in devices therefor
IPC: G01M3/20
Filed: 1950-03-24
Abstract: 673,424. Detecting leaks in evacuated enclosures. PHILIPS ELECTRICAL INDUSTRIES, Ltd. March 24, 1950 [March 29, 1949], No. 7424/50. Class 37. [Also in Group XL (a)] Relates to apparatus for detecting leaks in an evacuated enclosure, for example a radio transmitting tube 1, 2, and comprising in known manner an ionization monometer opening into a palladium tube 4 which when heated is permeable only by hydrogen. The invention resides in providing the ionization manometer as a glow discharge tube 6 associated with magnet poles 8 producing a beam of magnetic flux which intersects spaced cathodes but does not intersect the anode. As shown, the flux beam between poles 8 is intercepted by spaced coaxial cathode plates 9 but not by the central cylindrical anode 10 which lies outside and surrounds the beam. In use the palladium tube 4 is heated by passing a current through it and the hydrogen spray 11 explores the radio tube 1, 2 and if there should be a leak the hydrogen will pass via connecting tube 3 and palladium tube 4 into the glow discharge tube 6. The walls of the discharge tube 6 are flattened to match the shape of the poles 8. Specification 619,133 is referred to.
Patent GB-453164-A (GB)
Title: Improvements in or relating to methods of echo sounding
IPC: G01S15/12
Filed: 1935-03-09
Abstract: 453,164. Indicating proximity of earth or other bodies. ASKENASY, A., 27, Keizersgracht, Amsterdam. March 9, 1935, No. 7448. Convention date, March 21, 1934. [Class 37] [See also Group XXXVIII] In echo-sounding apparatus in which the echo reacts on the transmitter to cause a periodic transmission, the frequency of which indicates the height, delayed automatic volume control apparatus is provided to ensure that a standard effect is made on the transmitter by waves which have varied in intensity due to alterations in reflecting power of the reflecting surface or in the height. The nature of the reflecting surface can be determined by comparing readings of the height indicator and the current flow meter of the volume control. The invention is described as applied to sound waves, but it is stated that electromagnetic waves could be used. The circuit between the receiver and the transmitter is arranged so that the modulating wave is of sinusoidal form. As shown in the Figure, the transmitter 1 is fed from oscillator 2 through amplifying valves 3 and 4. The echo signal is received by receiver 5, is amplified by valves 6, 6a, is rectified by valve 7 and is fed onto the grid of valve 3 through resistance w. The amplification factor of valve 3 is reduced so that the transmitted signal weakens. When the received signal weakens, the effect of valve 7 on valve 3 falls off so that the strength of the transmitted signal is restored. Frequency meters 10a and 10b indicate the frequency of the weakenings and so indicate the distance through which the sound waves have travelled. The plate current of valve 7 is also fed to valve 9 of the automatic volume control which is arranged to vary the grid current, and so the amplification factor, of the valve 6 inversely with the strength of the received signal. The automatic volume control is delayed so that it is effective only on slow fluctuations due to variations in height or in the reflecting surface. The plate current of valve 9 is indicated on instrument 10c and by comparing the readings of this instrument with those of instruments 10a and 10b an indication of the reflecting surface is obtained. The pointer of instrument 10c may move over the same dial as that of instrument 10a or 10b.
Patent GB-1174583-A (GB)
Title: Vaporisation and further chlorination of Chlorinated Residues
Inventor: BASHFORTH ERIC QUALTROUGH
IPC: C07C17/00
Filed: 1966-02-21
Abstract: 1,174,583. Chlorination. IMPERIAL CHEMICAL INDUSTRIES Ltd. 30 Jan., 1967 [21 Feb., 1966], No. 7491/66. Heading C2C. Chlorinated residues obtained in the production of chlorinated aliphatic hydrocarbons are vaporized and further chlorinated by introduction of the residues in the liquid state into a fluidized bed of particulate material and interaction of the residues with molecular chlorine within the bed at a temperature of 200-700‹ C. The residues comprise one or more partially chlorinated C 1-4  aliphatic hydrocarbons containing at least one hydrogen atom attached to carbon and provide at least a major proportion by weight of the said partially chlorinated hydrocarbons fed to the bed. The fluidized particulate material may be inert or be a catalyst for the reaction.
Patent GB-488413-A (GB)
Title: Improvements in or relating to resistance-capacity coupling circuits for electric amplifiers
IPC: H03F3/02
Filed: 1938-03-10
Abstract: 488,413. Valve amplifying circuits. ELMQVIST, R. March 10, 1938, No. 7496. Convention date, March 10, 1937. [Class 40 (v)] In a resistance-capacity coupled amplifier switches are provided to short-circuit the grid leaks to reduce the charging period of the coupling condensers. The grid leak has a value preferably 10 times that of the resistance in the anode circuit. The switches 18, 19 may be coupled for simultaneous actuation and may be opened in succession. The switches may be conjointly operated with the switch initiating the operation of the amplifier and may be re-opened by a time switch. The amplifier may be used in electro-cardiograph apparatus which may utilize a plurality of parallel connected amplifiers.
Patent GB-748172-A (GB)
Title: Improved method of producing photographic images
IPC: G03C1/62
Filed: 1952-03-24
Abstract: 748,172. Diazosulphonate sensitized materials. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. March 24, 1952 [March 27, 1951], No. 7512/52. Class 98 (2). When diazosulphonates are used as lightsensitive compounds and the sensitized material is treated after exposure with a mercurous salt to yield a metal image which is thereafter physically developed, the developability of the material decreases with increasing time interval between exposure and treatment with the mercurous salt. To combat this regression antiregression agents are included in the sensitized material these agents serving to oppose the reconversion into diazosulphonate from the sulphite form but not themselves causing precipitation of mercury or mercury salts. A substance is regarded as an anti-regression agent if after a lapse of 15 minutes from exposure it decreases the normal loss in maximum density by 0.1. Chemical properties of classes of materials which may be used as anti-regression agents are stated in the Specification. Suitable anti-regression agents are lead acetate, lanthanum nitrate, thorium nitrate, uranyl acetate, chromium acetate, copper acetate, cobalt acetate; lactic acid, citric acid, and their alkali metal salts or salts with the above mentioned cations or zinc or cadmium; #-naphthol, 1-amino 8-naphthol 3.6 - disulphonic acid; m - sulphobenzoic acid; and α-naphthylamine sulphonic acid cadmium salt. The diazosulphonate may itself include the anti-regression agent as by employing the lead salts of 1-methyl-3-chloro benzene-4-diazosulphonic acid or of p-methoxy benzene diazosulphonic acid. To avoid fog the sensitizing solution must be of pH < 7 and may if necessary contain free acid. In specific examples, superficially saponified cellulose acetate foils are sensitized with solutions containing pmethoxybenzene sodium diazosulphonate, with, as anti-regression agent, citric acid, resorcinol, naphthalene trisulphonic acid, cadmium lactate. In further examples the benzene diazosulphonate may be the sodium salts of pethoxy-, 3.4-dimethoxy or 2-chloro-4-methyl derivatives and the anti-regression agents may be zinc acetate, lead benzene sulphonate, or ammonium tungstate respectively. In all the examples, the exposed material after treatment with mercurous nitrate is physically developed with a metalcitric acid-silver nitrate solution. Specifications 518,129, 518,162, 544,702, 735,424 and 737,874 are referred to.
Patent GB-1063860-A (GB)
Title: Method and apparatus for atomizing fluent materials
IPC: B05B17/06
Filed: 1964-02-24
Abstract: 1,063,860. Spray-producers. SONIC DEVELOPMENT CORPORATION OF AMERICA. Feb. 24, 1964 [Feb. 25, 1963], No. 7570/64. Addition to 1,034,560. Heading B2F. [Also in Divisions F4 and G5] In a liquid atomizer, which is based upon the Hartmann type whistle, jets of liquid are directed into the path of sonic pressure waves which effect the liquid atomization. The convergent-divergent nozzle 20 produces a supersonic gas jet having a region where the pressure is less than ambient pressure and which is directed into a cavity 18 where the alternate build up and release of pressure produces sonic pressure waves. Liquid emitted from feed holes 35 is directed into the path of the pressure waves and atomized and the resulting particles then drift out into the medium. The low pressure region in the gas stream produces periodic inrushes of gas which help to draw the liquid into the region where the pressure waves are most concentrated. In further embodiments Fig. 7 and 8 (not shown) the liquid is fed to an anulus surrounding the nozzle and connecting with the exit of the nozzle by spaced apart peripheral channels also a further jet of gas is provided for driving the cloud of particles away from the atomizer. The atomizer can be used as a liquid fuel inlet jet for a furnace.
Patent GB-374923-A (GB)
Title: Improvements in or relating to a method of and means for effecting the distillation of solid fuels
IPC: C10B49/02
Filed: 1931-03-12
Abstract: 374,923. Heating granular material. SOC. DE RECHERCHES ET DE PERFECTIONNEMENTS INDUSTRIELS, 87, Avenue Wilson, Puteaux, Seine, France. March 12, 1931, No. 7686. Convention date, April 4, 1930. [Class 64 (ii).] The Specification as open to inspection under Sect. 91 (3) (a) describes the use of heat exchange apparatus containing solid material, in which the material in relatively large and immovable pieces is traversed by a stream of fluid, the velocity of the fluid stream being increased to prevent the formation of stagnant films about the surfaces of the solid materials. The velocity of the fluid stream is about 30 metres per second when the solid is in pieces of between 20 and 60 mm. diameter. The apparatus comprises chambers 1 .. 4, the heating fluid entering by a pipe a, and being conducted either upwards or downwards through chambers 1, 2 by suitable adjustment of valves v<1> .. v<4>, and upwards only through chambers 3, 4, to an outlet b. The application to heat-exchange apparatus does not appear in the Specification as accepted.
Patent GB-1334985-A (GB)
Title: Hatch cover
IPC: B63B19/203
Filed: 1972-02-18
Abstract: 1334985 Hatch covers NAVIRE CARGO GEAR AB 18 Feb 1972 [18 Feb 1971] 7693/72 Heading B7S A hatch cover comprises at least three pivotally interconnected sections 10, 11, 12 one end of a first, 10, of these sections being pivotally connected to the end of the coaming at 15 and a pair of wheels 26 are attached to the cover at the junction between the second and third of the sections, 11 and 12 respectively. Arm 19 is pivotally connected at one end to a side of the second section 11 and the arm is slidably connected at its other end to a side of the first section by a guided member 21 mounted in slot 20. A first pulley 22 is mounted on the guided member and a second pulley 23 is mounted on the first section adjacent the pivotal connection between the first and second sections. Wire 17 is guided over the first and second pulleys from point 25 between the pulleys on the first section to point 24 on the third section so that when the first and second sections are folded together movement of the guided member 21 in the slot causes the wire to fold the third section against the second section.
Patent GB-756086-A (GB)
Title: Improvements in or relating to dough making
Inventor: JONES DAVID AYRES
IPC: A21C1/14
Filed: 1954-03-17
Abstract: 756,086. Automatically controlling dough mixing apparatus. JONES & CO., Ltd., D. A. April 15, 1955 [March 17, 1954], No. 7707/54. Class 86. Apparatus for making dough comprises a reservoir for water having an immersion heater element 9 to maintain the water temperature at a desired value and time switching means adapted, first to initiate delivery of a predetermined quantity of water from the reservoir to a mixing bowl and to start an electric motor 1 which is arranged to drive the mixing machine and, after a predetermined time, to stop the motor 1 and mixing mechanism. The immersion heater element 9 is controlled by a thermostatic switch 10 when a manually operable switch 29 in the circuit is closed. Another thermostatic switch 11 is disposed in the circuit of a heating element 12 disposed on or adjacent the dough mixer. A link 13 is connected at one end to a discharge valve in the water tank and is connected at the other end to a link 13a centrally pivoted at 14 and carrying a mercury switch 15. Link 13a is connected to the armature 18 of a solenoid 19 having a winding 20 which is connected in series with a time switch 21 and a manually adjustable switch 22. For automatic operation of the apparatus switch 22 is set so that it bridges contacts 22a, 22b. At a preselected time the switch 21 operates to energise the solenoid 19 causing actuation of the linkage 13 and opening the discharge valve of the water tank. As link 13a tilts, the mercury switch 15 closes the circuit of a contact operating coil 2 to energise the motor 1 and start the operation of the mixing mechanism. When the time switch 21 operates to de-energize the solenoid winding 20, the switch 15 will be tilted to open the circuit of the contact operating coil 2 and stop the motor 1. The motor can also be stopped by opening a switch 23. The mixing machine may be operated independently of time switch 21 by setting switch 22 to bridge contacts 22e, 22f and operating a push button switch 28. A signal lamp 30 is arranged to indicate when the switch 22 is in position to control operation of the motor 1, and another signal lamp 31 indicates when the heater element 9 is energized.
Patent GB-494882-A (GB)
Title: Improvements in or relating to apparatus for detecting the presence of poisonous gases or vapours in the atmosphere
IPC: G01N31/22
Filed: 1938-03-12
Abstract: <PICT:0494882/III/1> A device for detecting poisonous gases &c. in the atmosphere comprises a combustion chamber 3 in which the air is subjected to heat by an electric filament 6 or a spirit lamp, and a test chamber 2 in which the products of combustion act on a test paper 18 or like indicator.  A suitable test paper is treated with starch, potassium iodide, and potassium iodate, and is capable of indicating the presence of all gases yielding chlorine or sulphur dioxide as combustion products.  The atmosphere enters by way of a filter chamber 14 containing absorbents to remove any impurity which might vitiate the test.  To enable a poisonous gas to be identified a number of such chambers 14 containing absorbents for different gases may be connected in parallel and utilized in turn. Alternatively a series of different test papers may be used.  The tube 1 connecting the combustion and test chambers may be lined with pure Para rubber to absorb any ozone formed by the combustion.
Patent GB-713075-A (GB)
Title: Apparatus for soil-less plant cultivation
IPC: A01C1/02
Filed: 1951-04-04
Abstract: 713,075. Soil-less plant cultivation. PERIN, G. April 4, 1951, No. 7833/51. Class 6 (2) Soil-less cultivation of plants is effected in apparatus wherein warm air, at super-atmospheric pressure and charged with carbon dioxide, is circulated, preferably with a pressure of 1-3 atmospheres and a concentration of 8 per cent of carbon dioxide. The apparatus comprises a cabinet 1 in which are arranged two tiers of trays 3 containing a soil-less cultivating-medium, and surmounted by water containers 4. A fan 8 in a chamber on the top of the cabinet draws fresh air from a pipe 10 and forces it down through a heat-exchanger 7 into the cabinet, the exchanger 7 being heated by combustion gases from a stove 15. A part of the gases is drawn off and mixed with the air passing into the cabinet, the remainder being returned to the stove by the pipe 13. The air and gases after circulating round the cabinet are withdrawn through pipes 11, mixed with further air and gases, and recirculated, A valve 16 regulates the circulation, and a thermostat 19 controls the operation of the fan according to the temperature of the cabinet.
Patent GB-709723-A (GB)
Title: Improvements in or relating to machines for washing clothes and other articles
IPC: D06F17/10
Filed: 1951-04-05
Abstract: 709,723. Washing-machines. LIGHTBOURNE, R. C. April 29, 1952 [April 5, 1951], No. 7881/51. Class 138(2) The invention relates to alternative forms of impeller for the washing machine described in Specification 683,909. Thus the impeller 10 is provided on its working face with a plurality of circumferentially spaced open-ended ducts extending outwardly from a position between its axis of rotation and its periphery. The ducts are preferably of diverging channel or concave form in cross-section and some may have a cross-sectional area substantially less than that of the remaining ducts. The impeller in Fig. 2 has five similar ducts 14, while that in Fig. 5 has two deep ducts 14a and three shallow ones 14b. The impeller may be driven by lugs engaging the sides of webs 13 on the lower side of the impeller or through a clutch facing 19 on a plate 18 screwed to the impeller According to the Provisional Specification the ducts may be of curved form, or arranged at an inclination to the radius. Specification 683,910 also is referred to.
Patent GB-558152-A (GB)
Title: Improvements in fastening devices
IPC: B64C1/00
Filed: 1942-06-10
Abstract: 558,152. Cowling &c. fastenings. ILLINOIS TOOL WORKS. June 10, 1942, No. 7963. Convention date, Jan. 30. [Class 44] In a stud fastening for aircraft cowlings and the like in which projections 24 on the stud engage bayonet-fashion with cam surfaces on a resilient member 14, the aperture in said member surrounds the stud, as distinct from being a slot liable to lateral separation, and edge abutments are provided to space the resilient member from a base plate and to limit distortion of the member under strain. As shown, member 14 is integral with a base plate 12 having perforated lugs for connection to the frame member 36 by rivets 38 and is formed by bending a blank, the edges 30, 32 opposite the fold 16 being curved to interengage as shown so as to prevent separation of parts 12, 14 but allow limited approximation in use. The edge 46 of the aperture in the base plate is also flanged as shown to provide an abutment to limit distortion of part 14. A thin aluminium pad 44 may be interposed between parts 12, 36.
Patent GB-1522044-A (GB)
Title: Electro-hydraulic drive arrangement for a lift or hoist
IPC: B66B1/24
Filed: 1976-03-01
Abstract: 1522044 Propelling elevators MASCHINENFABRIK AUGSBURG-NURNBERG AG 1 March 1976 [4 March 1975] 07985/76 Heading B8L An electro-hydraulic drive for a lift cage 1 mounted on a piston 3 in an hydraulic cylinder 2 comprises an electric motor driven pump 7 for delivering hydraulic fluid to the cylinder 2 through a controllable non-return valve 5, the upwards and downwards velocity of the cage 1 being effected solely by regulation of the rotational speed of the pump 7 and by substantially all the working fluid being passed through the pump during both directions of travel of the cage. An electrical signal representing the desired velocity of the cage 1 is fed through a switch 17 into a desired valve setter 16 and is added to an electrical signal relating to the actual velocity of the cage 1, this being derived either from a tachogenerator 18 coupled through a rope 19 to the cage or from a flow meter generator 24 between the pump 7 and the valve 5 the added signals forming a deviation signal which controls the speed of the pump motor 10 through a high amplification controller 22 and a motor controller 23. For elevation of the cage the desired valve setter is energized and the pump 7 elevates the cage in response to the deviation signal fed to the motor 10, the setter being settable for any desired velocities. For lowering the cage initially the pump 7 is driven in a direction to open the non-return valve 5 whereafter a magnet 14c of a magnetic relay valve 14 is excited and a control unit 14b is actuated so that fluid from the cylinder feed line 4 flows through a control line 13 into the valve 5 to maintain the valve open. After deenergizing the pump motor 10, fluid from the cylinder drives the pump 7 and therefore motor 10 providing a signal for addition to the actual cage velocity signal for comparison with the desired valve setter signal whereupon a braking action of the motor and pump can be applied as the cage reaches its lowest position. The magnetic relay is then returned to rest.