baber/WOPTO huggingface dataset:
Patent GB-1094240-A (GB)
Title: A ramp generator circuit
IPC: H03K4/56
Filed: 1965-11-22
Abstract: 1,094,240. Saw-tooth generating circuits. TEKTRONIX Inc. Nov. 22, 1965 [Nov. 30, 1964], No. 49539/65. Heading H3T. A ramp generator is controlled by a bi-stable circuit to which triggering pulses are applied through a gate, the latter being closed after the start of the sweep and opened again by the end of the flyback. The Figure shows a Miller type integrator comprising interchangeable Miller capacitors 20 and an amplifier 10, 12. In its quiescent state D.C. stability is maintained by negative feedback through a circuit comprising diode 38, transistor 42, comparator transistor 46 and diode 40, the comparator comparing its emitter voltage with the voltage developed at its base by a transistor 56. When a synchronizing pulse is applied at 81 a tunnel diode bi-stable device TD-1 is switched to its high voltage state. This renders a transistor 96 conducting and its collector potential change is passed through transistor 42 to block diode 38 and through a capacitor 100 to block diode 40. The Miller capacitor is then charged through one of the interchangeable resistors 26 to generate the ramp. The combined action of the input pulse and the commencement of the ramp cuts-off transistor 42 and the collector voltage change is passed through the input transformer to block the input diode 74 so that the circuit is now unresponsive to further input pulses. When the ramp output voltage at 16 reaches the desired peak value a further tunnel diode TD-2 is switched to its high voltage state to render transistor 68 conducting and thus to restore the tunnel diode TD-1 to its low voltage state. This, through transistor 96 renders diode 40 conducting so that the fly-back starts. The reducing output voltage at 16 restores tunnel diode TD-2 and at the end of the fly-back, diode 38 becomes conductive. This renders transistor 42 conductive and thus through its collector removes the blocking bias from diode 74. Clamping diodes 82, 84 may be removed from this latter circuit by a switch 88, 90 which also removes a short-circuit from a resistor 120 to make the circuit free-running. It is stated that the tunnel diodes could be replaced by other bi-stable circuits and TD-2 could be omitted.
Patent GB-1117455-A (GB)
Title: Gas-pressurised liquid-dispensing device
Inventor: WILSON JOHN BENSON
IPC: B67D1/04
Filed: 1965-11-22
Abstract: 1,117,455. Compressed gas containers. REYNOLDS METALS CO. 22 Nov., 1965, No. 49543/65. Heading F4P. [Also in Division F1] A liquid carbon dioxide container 20, Fig. 1, is supported within a beer keg 22 by means 24, Fig. 2, detachably secured to one end of the keg and provided with an automatic pressure reducing valve 64 and discharge passages 28, 30 having a tubular extension 32 over which is fitted a non-return discharge valve comprising a closed-ended rubber tube 38, Fig. 3, having one or more slits 44 cut in its cylindrical wall 40. The tube wall is prevented from collapse by a metal plug 46. The pressure reducing valve 64 is of the tyre inflating type having a stem 76 depressed by a stud 78 carried by a spring-biased diaphragm 80 to an extent dependent on the gas pressure in the discharge passage 28, 30. The gas container support 24 is also provided with a valve 88 for relieving excess pressure in the gas space of the keg and is protected by a rupturable plastic cover 90. The support 24 is received within a recess 52 in the peg 22 and is held by an inwardly spring- biased split ring 56 located in an undercut 54, Fig. 7, adjacent recess 52. The split ring 56 is spread by means 60 comprising a ring 98 with radially movable teeth 102, engaging the split ring 56 and having pins 134 extending into eccentric grooves cut in a ring 100 which is rotatable relative to ring 98, e.g. by worm gearing.
Patent GB-1529497-A (GB)
Title: Process for constructing a quay wall for marine and river installations and quay wall thus provided
IPC: E02B3/06
Filed: 1976-11-30
Abstract: A first excavation is carried out transverse to the axis of the finished wall, said excavation having a width of approx. 1 metre which is substantially equal to the width of the bucket and a length of 3 metres, equal to the desired thickness of the finished wall. The first panel (1) of approximately parallelepipedal shape is cast in said first excavation, and then a second excavation is carried out which is identical to the previous one and parallel to it at a distance corresponding to approximately twice the width of said first excavation, the second panel (3) is cast in said second excavation, a third excavation for the panel (2) is carried out which is identical and parallel to the previous ones and which is located between the panel (1) and (3), the panel (2) is then cast in the third excavation and the process is repeated until the entire length of the wall has been filled with panels positioned transversely to the axis of the wall. Using this method, an embankment wall is produced which has a considerable thickness and is simple to construct compared to cement mix bulkheads which have a broken profile in plan view. <IMAGE>
Patent GB-1525027-A (GB)
Title: Cooled turbine vanes
IPC: F02C7/18
Filed: 1975-12-05
Abstract: 1525027 Cooling gas turbine vanes UNITED TECHNOLOGIES CORP 5 Dec 1975 [11 Dec 1974] 50054/75 Heading FIT To facilitate combined film cooling and impingement cooling of gas turbine vanes, film cooling holes 32 are provided at the leading edge of the vane and compressed air fed to the internal cavity 26 in the vane passes through these holes and through impingement cooling holes 86 in a U-shaped insert 78 which seals against sealing ribs 52, 58 on the pressure and suction sides of the blade cavity to effectively isolate the film cooling holes 32 from similar holes 46 in the suction side of the vane. Further film cooling holes 40 may be provided on the pressure side of the vane. Spaced ribs 54, 60 on the internal surface of the cavity hold the insert from the cavity walls when the cavity is pressurized. As shown, two internal cavities are provided in the vane, each with a U-shaped insert.
Patent GB-1184018-A (GB)
Title: Process for the preparation of Polyacyl Oxamidrazones
IPC: C08G73/08
Filed: 1968-10-22
Abstract: 1,184,018. Polyacyloxamidrazones. GLANZSTOFF A.G. 22 Oct., 1968 [31 Oct., 1967], No. 50085/68. Addition to 1,139,279. Heading C3R. In a process for the production of polyacyloxamidrazones having recurring units of formula where R is a direct bond or an aliphatic, cycloaliphatic, araliphatic or aromatic radical, by reacting oxalic acid bisamidrazone with one or more dicarboxylic acid dihalides of formula where X is chlorine or bromine, in a two-phase solvent mixture at 0 to 60 C. in the presence of an acceptor, as described in Specification 1,139,279, the reaction is carried out in a mixture of water and very pure tetrahydrofuran in a ratio by volume of 3 : 1 to 1 : 3 with the addition of 3% to 15% by weight based on the water of sodium chloride or sodium sulphate as a salting-out agent and an alkali metal carbonate or bicarbonate is used as the acid acceptor. The tetrahydrofuran is purified by first contacting it with solid potassium hydroxide and then distilling it over sodium borohydride or potassium permanganate. Examples are given.
Patent GB-1278523-A (GB)
Title: Mobile apparatus for laying and/or picking up railway sleepers
IPC: E01B29/10
Filed: 1969-10-13
Abstract: 1278523 Laying railway sleepers F PLASSER 13 Oct 1969 [16 Oct 1968] 50191/69 Heading E1G The subject matter is substantially the same as that in Specification 1278524 but the claims are directed towards the automatic control of sleeper conveyers in a track-laying train by switches and stops located in the path of and actuated by the conveyed sleepers. Some additional details of construction are illustrated in Figs. 3-5 concerning the actuator 5" of the sleeper-laying fork 5; the switches and stops 30, 31, 32; and the guides 7" for the raised new and old rails 2. Specifications 1278522 and 1278525 are also referred to.
Patent GB-1589333-A (GB)
Title: Fluid-flow pollutant monitoring systems
IPC: G03G21/10
Filed: 1977-12-02
Abstract: In order to monitor a gas flow for particles present therein, e.g. toner particles, a probe (SO) is arranged in the gas flow. The probe (SO) consists of a transparent hollow body (GL), e.g. a small glass tube, of a light source (LQ), which is arranged in the hollow body (GL) and illuminates it on that side of the wall on which the gas flow impinges on the hollow body, and of a photodetector (FO) which is arranged in the hollow body and receives the light reflected on the wall side. The particles contained in the gas flow are deposited on the wall side, resulting in a change in intensity of the reflected light. The photodetector emits a corresponding signal which is analysed by a threshold-value circuit. <IMAGE>
Patent GB-1013710-A (GB)
Title: Improvements relating to alkylaryl isocyanates and their production and purification
IPC: C08G18/76
Filed: 1963-12-19
Abstract: A polyurethane is prepared by reacting purified 3,5-dichloro-2,4-tolylene diisocyanate (see Division C2) containing 0.003% alpha-Cl with polytetramethylene ether glycol, M.W. 1000.ALSO:The invention comprises compounds of formula <FORM:1013710/C2/1> wherin Q is 1 - or 2-naphthyl, X is H, Cl, Br or C1- 4 alkyl, Y is X or -NCO and the naphthyl groups may contain as substituents X or -NCO provided that -NCO groups are not present in two adjacent positions.  Such compounds may be prepared by a more general process for the production or purification of organic isocyanates, wherein an alpha-chloro or -bromo alkyl aromatic compound is reacted at 50-250 DEG  C. in presence of a Friedel-Crafts catalyst with a coreactive aromatic compound to replace the whole of the alpha-halogen, at least one of the aromatic compounds containing one or more -NCO groups.  The coreactive compound may be optionally substituted naphthalene, anthracene, phenyl isocyanate, alkoxybenzene or aryloxybenzene, the latter three compounds being 4-unsubstituted. The preparation of a number of compounds having the above formula is exemplified, as are also 4-isocyanatodiphenylmethane, 3-methyl-4,41-diisocyanatodiphenylmethane, and 5 - chloro - 31- or 51 - methyl - 2,21,4,41 - tetraisocyanatodiphenylmethane; also exemplified is the removal of alpha-halogen by said process from ring - dichlorotolylene diisocyanate, 3,5,6 - trichloro-2,4-tolylene diisocyanate and 2,4-tolylene diisocyanate.
Patent GB-1350309-A (GB)
Title: Acetylsalicylic acid derivative method for its preparation and  therapeutic composition containing same
IPC: C07C69/86
Filed: 1971-10-29
Abstract: 1350309 Arginine acetylsalicylate METABIO 29 Oct 1971 [26 Nov 1970] 50356/71 Heading C2C A novel salt of acetylsalicylate is formed by reacting acetylsalicylate with D, L or DL arginine. The reaction is preferably carried out at a temperature below 10‹ C. using acetylsalicylic acid in alcohol or ketone solution and arginine in aqueous solution. The salt has analgesic and antipyrelic properties and with a suitable carrier forms a pharmaceutical composition which may be administered orally or intravenously.
Patent GB-1136594-A (GB)
Title: Improvements in or relating to aqueous dispersion coating compositions
Inventor: BONDY CLEMENS
IPC: C09D7/47
Filed: 1964-12-10
Abstract: 1,136,594. Polymeric coating compositions. REVERTEX Ltd. 10 Dec., 1965 [10 Dec., 1964], No. 50372/64. Heading C3P. [Also in Division B2] Coating compositions comprise an aqueous dispersion of (a) at least one water-insoluble film-forming resin selected from water-insoluble polymers or copolymers of vinyl acetate and/or an ester of acrylic or methacrylic acid, and water-insoluble copolymers of styrene and/or vinyl toluene with butadiene or isoprene, and (b) a gloss improving agent selected from 2- iminazolidone, 2 - pyrrolidone, 2 - oxazolidone, N - acetyl - 2 - oxazolidone, caprolactam, acetanilide, α - chloro - acetanilide, thiourea, methylene - bis - thiourea and N - phenylthiourea, said agent being present in a concentration of 0À25 to 15% by weight of the coating composition. Component (a) may be a copolymer of an acrylate or methacrylate ester with another such ester, vinyl acetate, styrene, vinyl toluene, vinyl chloride, butadiene or methacrylic acid, or a copolymer of styrene, butadiene and methacrylic acid. Additional components which may be included in the compositions include pigments or fillers such as titanium dioxide, micronized dolomite, montmorillonite and hectorite; alkylene or polyalkylene glycols; thickeners such as hydroxy ethyl cellulose, polyvinyl pyrrolidone and polyvinyl oxazolidone; alkali-soluble resins such as an ethoxy ethyl methacrylate-dimethyl itaconate-acrylic acid copolymer; phenyl mercury hydroxide (preservative); pine oil; and anti-foam agents. The compositions may take the form of a thixotropic gel.
Patent GB-1428295-A (GB)
Title: Apparatus and method for bedning tubing
IPC: B21D11/07
Filed: 1974-03-22
Abstract: 1428295 Bending tubes WELDUN TOOL & ENG CO 22 March 1974 [29 Nov 1973] 50487/74 Divided out of 1428294 Headings B3E and B3A Bending tubular material 10, Fig. 1, comprises feeding a free end portion of material from a reel 12, clamping the free end in a bend head 60, rensioning the clamped material at a feed section 18, cutting the clamped free end portion while under tension, and bending the severed length into a bent form 14, Fig. 2. The bent tubing is suitable for use in refrigeration applications. The apparatus and method of manufacture are disclosed in Specification 1,428,294.
Patent GB-1209775-A (GB)
Title: Laminated non-woven fabric
IPC: D04H13/00
Filed: 1967-11-08
Abstract: 1,209,775. Laminated fabric. JOHNSON & JOHNSON. 8 Nov., 1967 [8 Nov., 1966], No. 50742/67. Heading B5N. A laminated non-woven fabric comprises a layer of overlapping, intersecting fibres bonded to a layer of synthetic polymer fibres, which are mutually interconnected, e.g. a fibrillated film, and are oriented in the transverse direction of the fabric. Preferably the first layer is oriented in the longitudinal direction. The polymer fibre layer may comprise polyethylene, polypropylene, polyamide, e.g. nylon, polyester, polyurethane, polyacrylics, polyvinyl acetate, polyvinyl chloride or copolymers or mixtures thereof, and may be made by orienting a film of polymer by stretching in a tenter frame with heating, and applying forces in the longitudinal direction, e.g. by ultrasonics, brushing, passage between compressed belts or passage over a knife edge, to produce interconnected fibres. The other fibrous layer may be a carded web of staple fibres of cotton, wool, rayon, regenerated cellulose, polyolefin, polyester or polyamide, and may be prebonded before laminating. The layers may be bonded by adhesive, solvent bonding, needle punching or heating to unite thermoplastic fibres, in which case said other layer may include fibres of the same polymer as the polymer fibre layer. Other layers can be present.
Patent GB-1498152-A (GB)
Title: Method of heat recovery in a process for the removal of nitrogen oxides from exhaust gases
IPC: B01D53/86
Filed: 1975-12-16
Abstract: 1498152 Reduction of NO x in presence of SO x  SUMITOMO CHEMICAL CO Ltd 16 Dec 1975 [18 Dec 1974 17 July 1975]51453/75 Heading C1A Nitrogen oxides are removed from combustion gases containing SO x  and NO, by reducing catalytically or non-catalytically with ammonia, and recovering heat from the combustion gases, after the reduction, with a heat exchanger, the molar ratio of ammonia to sulphuric anhydride and the concentration of steam in the gases at the inlet for combustion gases, of the heat exchanger being in the range of O<NH 3 /SO 3 <2 and more than 12% by volume, respectively. The NH 3  may be added as a compound thereof. The operation may be continuous (until the catalyst is deactivated, in the case of catalytic reduction). The resultant ammonium bisulphate can be removed from the reaction system in the molten state. Any necessary increase in the concentration of steam to fall within the required range is effected upstream of the inlet for combustion gases of the heat exchanger.
Patent GB-1116826-A (GB)
Title: Improvements in textile substituting material
Inventor: OLSSON INGEMAR
IPC: D21H17/34
Filed: 1965-12-06
Abstract: A fabric web comprises creped tissue paper impregnated with a polymeric material which incorporates a blowing agent and an organic plasticizer.  The paper may be bleached sulphite cellulose or 40% alpha cellulose and 60% bleached sulphate cellulose or sulphite cellulose.  The polymeric material may be polyvinyl chloride, or a copolymer of vinyl chloride and acetate, benzyl-cellulose, ethylcellulose or polyvinyl butyral. The blowing agent may be benzilmonohydrazone.  The plasticiser may be tricresylphosphate, dialkylphthalate, e.g. dioctylphthalate, dietheneglycol dibenzoate or dibutylsebacate.  Preferably 2-20 wt. parts blowing agent and 10-200 wt. parts plasticiser are used per 100 wt. parts polymer.  The plastic may include heat- or light-stabilisers, pigment, e.g. TiO2, and dyestuff.  The paper may have a surface density of 10 - 100 g/m2. Impregnation may be by rolling or spraying.
Patent GB-1526929-A (GB)
Title: Spring-activated piston pumps
IPC: F04B53/14
Filed: 1975-11-28
Abstract: 1526929 Syringes TRANS EUROPE (PRODUCTION) Ltd and F J TAYLOR 28 Nov 1975 [29 Nov 1974] 51705/74 Heading F1R A pump piston is moved in one direction against biasing means by liquid pressure charging the cylinder, until it is engaged by catch means. The catch means is released by a solenoid so that the biasing means causes the piston to discharge the liquid. As shown liquid from a valved inlet 16 pushes piston 11 back against the spring 22 until fingers 27 engage behind abutment 21. The fingers are released by a cup like member 31 connected to the rod 29 of a solenoid 24. In a modification Fig. 2 (not shown) the piston has a rod extending outwardly and having a head which is engaged by a catch formed at a radially mounted solenoid.
Patent GB-1486156-A (GB)
Title: Increasing sucrose content
IPC: C07F9/40
Filed: 1975-12-18
Abstract: 1486156 Improving sucrose yield of sugar cane MONSANTO CO 18 Dec 1975 [19 Dec 1974] 51796/75 Heading C1B The sucrose content of sugar cane is increased by applying, 2-8 weeks prior to harvest where X and Y are H or lower alkyl, n is 0-3 and m is 0-3, m+n being 3 or the alkali metal, NH 4 <SP>+</SP>, lower alkyl, lower alkanolamine, aniline or substituted aniline salt thereof, lower being C 1 -C 4 . Application is preferably at the rate of 0À11-0À56 kg.per hectare, applied as an aqueous solution or suspension, which may contain 0À1-2À0 wt. per cent surfactant.
Patent GB-1097677-A (GB)
Title: Process for manufacturing moisture-proof films having a base of regenerated cellulose
IPC: C08J7/052
Filed: 1964-12-22
Abstract: A terpolymer for use in coating a film having a base of regenerated cellulose is produced by polymerizing a monomer mixture consisting of 0.5 to 25% by weight of alpha, beta-unsaturated aldehyde, 10 to 94.5% by weight of vinylidene chloride and 5.0 to 89.5% by weight of a different vinyl or vinylidene monomer copolymerizable therewith.  The aldehyde may be acrolein or methacrolein.  The vinyl or vinylidene monomer may be acrylonitrile and/or methylacrylate.  The copolymer may be prepared by emulsion or suspension polymerization in an aqueous medium, or solution polymerization in a mixture of methyl ethyl ketone, methyl isobutyl ketone and toluene. Initiators that may be employed are potassium persulphate, azobisisobutyronitrile, or sodium metabisulphite.  Emulsifying or dispersing agents, e.g. sodium dodecyl benzene sulphate may also be present.ALSO:Moistureproof film having a base of regenerated cellulose is produced by polymerizing a monomer mixture consisting of 0.5 to 25% by weight of alpha, beta-unsaturated aldehyde, 10 to 94.5% by weight of vinylidene chloride and 5.0 to 89.5% by weight of a different vinyl o vinylidene monomer copolymerizable therewith, coating the thus obtained copolymer on the base film and heat-treating the coated film at elevated temperatures.  The aldheyde may be acrolein and alpha- or beta-substituted acrolein in which the substituents are alkyl groups or halogens, e.g. crotonaldehyde, methacrolein and alphachloro-acrolein.  The vinyl or vinylidene monomer may be one or more of acrylonitrile, methacrylonitrile, alkyl-, cycloalkyl- or phenyl esters of acrylic or methacrylic acid, examples of which are given, vinyl acetate, vinyl chloride and alkyl vinyl ether, and may be present in an amount from 5 to 90% by weight based on the total weight of the mixture.  The heat treatment may be carried out between 80 and 150 DEG C.  The copolymer may be prepared by emulsion or suspension polymerization in an aqueous medium, solution polymerization in organic medium, precipitation polymerization, and bulk polymerization without use of any polymerization medium.  The polymerization may be carried out in an atmosphere of nitrogen. Initiators that may be employed include hydrogen peroxide, persulphates, perborates, azo compounds, organo metallic compounds, organic peroxides and hydroperoxides, and organic peracids. Activating agents specified are salts of heavy metals, sulphites, acid sulphites and like substances commonly employed as initiators in conventional redox polymerization.  Emulsifying or dispersing agents, and chain transfer reagents may also be present.
Patent GB-1335206-A (GB)
Title: Method and device for sealing conduits from the inside
IPC: G01M3/28
Filed: 1970-11-03
Abstract: 1335206 Repairing leaks in pipes; cleaning pipes GRANIT OCH BETON AB 3 Nov 1970 [3 Nov 1969] 52181/70 Headings F2P and F2N A device for internally sealing a pipe leak 2 comprises at least two seals 7, situated in circumferential grooves 8 in a body 5 and radially expandable by fluid pressure, which define a chamber 6 into which sealant is discharged under controlled pressure to plug the leak. Sealant enters the chamber 6 via a hose 16, and channels 14, 17, and air is fed to the seals via hose 13 and channel 12. Fluid pressure in chamber 6 is measured by a sensor 18 connected to a gauge 20. The distance from a service opening to the leak 2 is measured and the device is pulled along the prescribed distance. The alignment of the device is checked by the pressure reading at gauge 20 when air is pumped into chamber 6. If the pressure remains low, the device is correctly aligned. Cleaning fluid may be substituted for sealant for pipe cleaning purposes.