baber/WOPTO huggingface dataset:
Patent GB-1183509-A (GB)
Title: Manufacture of Thermocouples
Inventor: JORDAN FREDERICK JAMES
IPC: G01K7/04
Filed: 1967-11-30
Abstract: 1,183,509. Thermocouples. ENGLISH ELECTRIC CO. Ltd. 29 Nov., 1968 [30 Nov., 1967], No. 54659/67. Heading H1K. A succession of thermocouples are made by forming a series of spaced welded junctions 5-9 between two dissimilar metal wires 1, 2, passing the wires through at least one molten glass bead so as to coat them with molten glass, allowing the glass to solidify and cutting the wires adjacent each junction. As shown wires 1, 2 of 90% Ni/10% Cr and 98% Ni/2% Al respectively, preferably loosely twisted together, are welded together at junctions 5-9 by electrodes 3, 4 and are then directed by means of a guide 10 to a pair of heating loops 11, 12. The first loop 11 is continuously supplied with molten glass from a rod 17, thereby coating the wires 1, 2. The second loop 12, which may be omitted, may likewise be fed continuously from a rod 18, or may be initially supplied from the rod 18 and subsequently replenished by molten glass carried by the wires 1, 2 from the first loop 11. The loops may be open as shown, or closed or may be replaced by heating electrodes. The coated wires 1, 2 are drawn upwards, e.g. by resilient rollers 22. If a devitrifiable glass is used for coating the wires a furnace (not shown) may be provided to devitrify the coating by heating prior to solidification. Finally a shearing device cuts off each separate coated thermocouple 25. The tip of the thermocouple may be dipped into molten glass after cutting to recoat the junction.
Patent GB-1256154-A (GB)
Title: Air-admixed cigarette utilizing restrictive-flow orifice
Inventor: TOMKIN ABRAHAM EMIL
IPC: A24D3/04
Filed: 1969-11-10
Abstract: 1,256,154. Mouthpiece cigarettes. A. E. TOMKIN. 10 Nov., 1969, No. 54934/69. Heading A2C.  A cigarette having a ventilated mouthpiece portion B and a filler portion A, comprises a filter element 18 adjacent a tobacco filler 11 and spaced from a transverse partition 13 provided with an orifice 14, the wall of the cigarette being provided with air ventilating perforations 21 between the filler 11 and the partition 13. A second filter element 17 is also provided and is spaced from the other side of the partition 13.
Patent GB-1405563-A (GB)
Title: Electrochemical machining
IPC: B23H9/16
Filed: 1973-11-30
Abstract: 1405563 Electro-chemical machining holes TRW Inc 30 Nov 1973 55715/73 Heading C7B Material is electrolytically removed from a workpiece 24 without penetrating with a tool by flowing an electrolyte through a dielectric material (e.g. boro-silicate glass) nozzle 20c to impinge as a jet 21 against the workpiece surface 24a, maintaining a fixed gap between the nozzle tip end 20d and the surface, e.g. by providing a glass rod 22 centrally in the nozzle tube 20 using washers or collars 23 to project beyond the tip end and bottom against the surface, applying a potential to cathodically charge the electrolyte in an enlarged zone upstream from the nozzle, e.g. in header (30) Fig. 10 (not shown), provided with electrode (Ti, Pt, Ni, or W wire 41) common to a plurality of nozzles (10), and simultaneously anodically charge the workpiece, controlling the potential and jet flow-rate to remove material from the workpiece (e.g. of alloy steel, Ni, WC, W, Mo, Ti, V, Cr, alloy thereof or Fe) only at the area of impingement of the jet, including maintaining a relatively low potential until a stream directing dimple is formed in the workpiece, then increasing the potential as the cavity deepens until a hole is formed through the workpiece, and then increasing the potential to straighten the hole bore. As shown a large cylindrical hole 25 may be cut leaving a central core 26, but a plurality of small holes (63, 64, 65) Fig. 11 (not shown), may be drilled into jet engine nozzle blades (60). The electrolyte may comprise sulphuric, hydrochloric, nitric or citric acid.
Patent GB-1212749-A (GB)
Title: Improvements in regulation in a transmission line section
IPC: H04B3/10
Filed: 1968-11-26
Abstract: 1,212,749. Repeater systems. C.I.T.-COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS. 26 Nov., 1968 [27 Nov., 1967], No. 56129/68. Addition to 1,109,566. Heading H4R. In a pilot operated automatic volume control and faulty repeater locating system of the type described in Specification 1,109,566 in which each of the sections between adjacent repeaters utilizes a different pilot frequency for gain regulation of the respective sections, and the pilot frequencies of adjacent sections differ by the same amount so that the pilot frequencies vary in arithmetic progression along the line, and at each repeater the incoming pilot is mixed with the outgoing pilot to produce a signal of the same frequency in each station to be detected by a pilot filter of that frequency and used for gain regulation of that repeater, the whole system Fig. 3 is divided into two main sections in the first of which, up to station M, the pilot frequencies increase in arithmetic progression while in the second main section, from station M, the pilot frequencies decrease in arithmetic progression from the same value F 0  as the frequencies in the first main section increased. The respective pilot frequencies (F 0 +if) provide gain regulation over the individual repeater sections while the repeater M using the pilot frequency F 0  provides an overall regulation of the first main section while the pilot signal F p  provides an overall regulation of the link from A to B. All the pilot signals generated are received and monitored at station B to provide a faulty repeater indication arrangement.
Patent GB-1481247-A (GB)
Title: Loss-of-dry inhibitors for surface-coating compositions
IPC: C09D7/12
Filed: 1974-12-31
Abstract: 1481247 Loss-of-dry inhibitors for oxidizable paints TENNECO CHEMICALS Inc 31 Dec 1974 [21 Jan 1974] 56180/74 Heading C3R A loss-of-dry inhibitor for incorporation in a surface-coating composition containing an oxidizable organic vehicle comprises a solution of a mixture of metal salts in an inert organic solvent and contains 0À05 to 1À5 wt. per cent Co, 0À5 to 3À5 wt. per cent Ca and 0À5 to 5À0 wt. per cent Zn and/or Zr present as salts of C 6-14  branched chain aliphatic and/or C 6-10  cycloaliphatic monocarboxylic acids. The surface coating composition may contain 2 to 5% of the solution based on the organic vehicle which may be an alkyd resin, a drying or semi-drying oil, or an oleoresinous varnish which is a reaction product of such an oil with rosin, a modified rosin or a phenolic resin. The solvent is preferably a hydrocarbon or halogenated hydrocarbon. The coating composition may be a paint, varnish enamel or printing ink and may contain conventional ingredients, e.g. metal salt driers, pigments, extenders, solvents, plasticizers and anti-skinning agents. In all the specific examples the oxidizable vehicles are soybean or linseed oil modified alkyds; the salts are 2-ethylhexanoic, isononanoic and/or naphthenic acid; and the solvent is mineral spirits containing about 6% tripropylene glycol.
Patent GB-1208696-A (GB)
Title: Olefin sulfonate detergent compositions
Inventor: SHARMAN SAMUEL HENRY
IPC: C11D1/14
Filed: 1968-11-27
Abstract: 1,208,696. Biodegradable sulphonate detergents. CHEVRON RESEARCH CO. 27 Nov., 1968 [27 Nov., 1967], No. 56346/68. Heading C5D. A biodegradable detergent composition comprising (a) olefin sulphonates and/or hydrogenated olefin sulphonates containing 10 to 24 and preferably 15 to 18 carbon atoms, (b) an alkali metal or ammonium salt of a pentavalent phosphorus acid in an amount of to 3 parts by weight per part of olefin sulphonate, (c) a primary alkanol containing 10 to 15 carbon atoms, which is a normal or 2-methyl isomer, in an amount of from 4 to 40 parts by weight per hundred parts of olefin sulphonate. The phosphate (b) may be a tripolyphosphate, pyrophosphate, metaphosphate or orthophosphate of sodium, potassium or ammonium. The alkanol (c) is preferably a mixture of dodecanol-1 and 2-methyl dodecanol-1. Optional additions are anticorrosion, antiredisposition, bleaching and sequestering agents; optical whiteners and inorganic salts. Specified are sodium silicate, sodium sulphate, carbonates, borates and sodium carboxymethyl cellulose. The sulphonate may be in the form of the sodium, potassium or ammonium salt.
Patent GB-1418886-A (GB)
Title: Variable track wheels
IPC: B60B23/12
Filed: 1972-12-07
Abstract: 1418886 Adjustable track wheels GKN SANKEY Ltd 25 Jan 1974 [7 Dec 1972] 56531/72 Heading B7C In a variable track wheel of the type in which a rim 10 and a disc 11 are relatively adjustable axially by means of guides 14 on the disc slidably engaging rails 13 on the rim, the disc is maintained in an adjusted position by locking means carried by each guide being brought into frictional engagement with the radially inner surfaces of the associated rail and by at least two pairs of stops, each pair being attached to a rail with a stop on each side of, and abutting, an associated guide. One stop of one pair, or of each of at least two pairs, of stops is provided with an adjustable abutment for abutting the associated guide. Preferably a pair of stops is associated with each guide. As illustrated the locking means is a pad 24 which is urged into frictional engagement with a rail by an eccentric portion 23 of a rotatable pin 20. Alternatively the locking means may be a radially movable screw jack, the head of which engages the rail or a double ramp arrangement. The stops include U-shaped members 35, 48 which can each be secured to a rail by a bolt 41 provided with a screw thread which coacts with a threaded bore in part of the stop, the bolt passing through a selected bore in the rail. The abutment is a screw-threaded bolt 51 carried by stop 48.
Patent GB-1389899-A (GB)
Title: Process for the production of extrapure aromatics
IPC: C10G69/08
Filed: 1972-12-07
Abstract: 1389899 Pure aromatic compounds and fractions METALLGESELLSCHAFT AG 7 Dec 1972 [14 Dec 1971] 56594/72 Heading C5E In a process for producing pure aromatic compounds the reaction mixture from a hydroforming operation comprising hydrogen and aromatics is cooled and subjected to hydrogenation at 100-400 C. and at pressure not more than 10 atmospheres different from that under which the hydroforming was' performed. The hydrogenation is suitably performed with a catalyst containing oxides of cobalt and of molybdenum on an alumina carrier and reduces the olefin and diolefin content of the hydroformate. The aromatics can be separated from the hydrogenated hydroformate by solvent extraction, extractive distillation or by distillation of the hydrogenated hydroformate to provide fractions from which p xylenes can be separated from a C 8  fraction using molecular sieves and benzene can be separated from the benzene fraction by crystallization. In an example, a solvent extract is fractionated by distillation into benzene, toluene and xylene fractions.
Patent GB-1162739-A (GB)
Title: Double Bed Knitting Machine
IPC: D04B7/04
Filed: 1967-12-14
Abstract: 1,162,739. Knitting-machines. PALIZ A.G. 14 Dec., 1967 [15 Dec, 1966], No. 56802/67. Addition to 1,053,477. Heading D1C. The sinker operating member 4 of the parent invention has an elongated bearing slot 6 which permits the member to be depressed against the spring 8 in which position it is held by a catch 9 on its [front edge engaging the front edge 10 of the slot through which it projects. It is thereby held inoperative from operation by the cam slide 7.
Patent GB-1279088-A (GB)
Title: Gas liquefaction process
Inventor: LINNETT DAVID THOMAS
IPC: F25J1/02
Filed: 1968-11-29
Abstract: 1279088 Liquefying gases BRITISH OXYGEN CO Ltd 23 Oct 1969 [29 Nov 1968] 56830/68 Heading F4P Liquefaction of a gas is effected by passage through a series of heat exchangers cooled by expanded refrigerating liquid, the composition of which may be varied by addition of liquefied gases. Feed gas, partially liquefied by passage through heat exchangers 52 and 53, is fed to a separator 54, the liquid phase passed to a column separation system, and the gas phase fed via exchangers 55 and 58, the reboiler 56 of a degassing column 57, and an expansion valve 59 into the column 57 wherein it is separated. The resulting liquid is fed via exchangers 58, 61 and 62 to storage, and the top gases are used to cool exchangers 61 and 62. Refrigerant gas is fed through a compressor 70 and cooler 71 to a separator 72 and both resulting phases passed through exchanger 52. Part of the liquid phase is expanded through valve 74 and returned via exchanger 52 to the compressor. The gas phase is partially liquefied and is collected in a separator 73, the separated liquid being used to cool exchanger 53. The gas phase from separator 73, which has been partly liquefied in exchanger 53, is passed into a further separator 59 and the resulting liquid phase expanded to cool exchangers 65 and 55. The gas phase from separator 59, partly liquefied in exchanger 65, is collected in a separator 76, and the liquid phase used to cool exchanger 61, and the condenser 60 of the column and exchanger 58 whilst the gas phase is sub-cooled in exchangers 61 and 62, expanded through valve 80 and recycled to the compressor. The composition of the refrigerant gas may be varied by addition of liquefied pure component gases via lines 82, 89, 97, 98, 99 and 100, or by adding unexpanded refrigerant gas obtained at a higher exchanger. Adjustment may also be made by bleeding off some of the refrigerant at lines 103, 104, 105. In another embodiment (Fig. 1, not shown) the degassification column is omitted from the cycle. In a further embodiment (Fig. 3, not shown), refrigerant gas from the first separator is added to the feed gas at the start of the cooling cycle. The refrigerant gas is provided by mixing components extracted from the feed gas in the column separation system following separator 54.
Patent GB-1191080-A (GB)
Title: Improvements in or relating to Conducting Fluid Wetted Contact Electromagnetic Relays
IPC: H01H51/28
Filed: 1968-12-03
Abstract: 1,191,080. Relays with conducting liquid wetted contacts. SIEMENS A.G. 3 Dec., 1968 [4 Dec., 1967], No. 57302/68. Heading H1N. An electromagnetic relay having conducting liquid (e.g. mercury) wetted contacts has a bridging contact armature in a cavity in a sealed container and arranged so that the armature moves at each relay operation to sweep the cavity. The bi-stable relay of Fig. 1 has an armature 4 rockable in a cavity 1 in a glass enclosure 8 provided with magnetic fixed contacts 2a, 2b, 3a, 3b having polarizing permanent magnets arranged so that the armature bridges either contacts 3a and 2b or 2a and 3b. The armature is moved between its stable positions on appropriate energization of a coil 7. In Fig. 2 the armature 14 is a disc which bridges either contacts 12a and 13a or contacts 12b and 13b and is moved rectilinearly therebetween on appropriate energization of the coil 17. Additional magnets (not shown) may make the relay stable in one position only. Any mercury not on the wetted contact areas of the armature or fixed contacts is " gathered up " during armature movement and the relay can be used in any position. The armature 14 may have a hole 14a along its " axis of symmetry."
Patent GB-1454416-A (GB)
Title: Method and apparatus for the automatic control of a steam generator
IPC: F22G5/16
Filed: 1973-12-19
Abstract: 1454416 Automatic control of steam generator SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 19 Dec 1973 [21 Dec 1972] 58728/73 Heading G3N In the automatic control of a steam generator 1, Fig. 1, with varying load e.g. a steam turbine on a ship, the combustion fuel and air supply are controlled in dependence upon a reference value derived by summing in an adder 14 - an output signal P from a steam pressure controller 13, Fig. 1, a signal A proportional to the rate of steam offtake via a discharge line 8 and measured by a flowmeter 15, and a signal B proportional to the actual or alternatively the anticipated rate of change of the steam offtake. The sum signal from the adder 14 is used as a desired or reference value by a controller 16 for the fuel supply and by a controller 17 for the air supply. These controllers respectively receive signals from a fuel flow-rate meter 18 and air flowrate meter 19 and produce control signals to control fuel and air valves 3, 4 respectively. The fuel/ air flow-ratio can thus be maintained constant. The signal P is produced by the pressure controller 13 as a function of the difference between steam pressure in line 8 measured by a gauge 12 and a set value. The signal B may be produced by a computing element (20) Fig. 2 (not shown) from the derivative of the actual output steam flow-rate measured by a flowmeter 15. Alternatively, where signal B is proportional to expected rate of change, it is set up by one of two signal generators (22, 23) Fig. 3 (not shown) producing signals of opposite sign and which may have the same fixed value. As shown Fig. 1, steam leaves boiler 1 via a line 5 and passes through a super-heater 6 heated by flue gases and via a super-heater 7 and discharge line 8 to the load, e.g. steam turbine. Steam from the super-heater 6 can be selectively passed through a heat exchanger 9 in the boiler. The air line 4 may include a vane pump (25) Fig. 4 (not shown) driven by a motor (26) e.g. electric or steam turbine, and control of this motor is described with reference to Fig. 4.
Patent GB-1237719-A (GB)
Title: High speed catadioptric objective
IPC: G02B17/08
Filed: 1968-12-11
Abstract: 1,237,719. Reflecting objectives. PERHINELMER COPP. Dec.11, 1968 [Dec.18, 1967], No.58959/68. Heading G2J. A high speed catadisptric objective for use particularly in photography and photo-sensing systems comprises a concave spherical mirror 11, a first corrector component 12 consisting of a binconvex lens element A and a negative meniscus lens element B, positioned optically and physically in front of mirror 11 to compensate for spherical aberration thereof, and a second corrector component 13 positioned optically behind and physically in front of mirror 11 to compensate for other aberrations such as coma and astigmatism and consisting of a negative meniscus lens element D concave to the front and either a positive meniscus lens element C convex to the front or a biconvex lens element, both components being a focal and all elements spherical. The image plane I, shown in Fig.1, is optically behind and physically in front of component 13 but in a further embodiment a plane mirror positioned optically behind mirror 11 and in front of component 13 reflects light to an image plane between mirror 11 and component 13, there also being provided a central aperture in mirror 11 to permit insertion of electronic and mechanical equipment. Optical data are provided for two examples in both of which the obstructive ratio is about 7%.
Patent GB-1148660-A (GB)
Title: Method and apparatus for making compound materials
IPC: C01G28/00
Filed: 1966-03-31
Abstract: 1,148,660. Group III-V compounds. TEXAS INSTRUMENTS Inc. 31. March, 1966 [31 March, 1965], No. 58962/68. Divided out of 1,148,659. Heading C1A. [Also in Division B1] A Group III-V compound is prepared by mixing a Group V halide with a Group III halide to form a gaseous mixture in an upper chamber at temperature high enough to maintain the Group III halide in a non-reactive state, passing the mixture through a porous member into a lower chamber and maintaining a temperature gradient between the chambers such that at least part of the lower chamber is at a temperature low enough to cause disproportionation of the Group III halide into the Group III element and. a different valent form of the halide, whereby free Group III and Group V elements may combine (the latter being produced by thermal decomposition of the Group V halide). A preferred method comprises placing in the upper chamber a supply of Group III feed material and introducing a halogen gas to produce the Group III halide. In one example, granulated GaAs was placed on the frit (18) of the reactor shown in the figure. The GaAs (30) was heated to 1010‹ C. and the substrate to 800‹ C. using the heating coils (28). Hydrogen and AsCl 3  were passed in through a tube (20). N-type GaAs was deposited on the substrate surface (15). The chambers - are designated C and A. Mixed compositions may be made. A second example describes the preparation of GaAs 0 . 8 P 0 . 2  by passing both PCl 3  and AsCl 3  over GaAs in the upper chamber. Compounds of Al, In and Sb are also referred to.
Patent GB-1344298-A (GB)
Title: Vacuum working chamber with movable sealing joints
IPC: H01J37/18
Filed: 1971-12-21
Abstract: 1344298 Welding by fusion J-P PEYROT 21 Dec 1971 [21 Dec 1970] 59414/71 Heading B3R [Also in Division H1] An electron beam welding apparatus wherein the electron gun 1 (Fig. 1) is moved relative to a work-table 4, comprises inner and outer evacuated chambers bounded by respective flexible walls 8 and 13 sealed at one end to rigid collars attached to the gun and at their other ends to respective coupling rings 10 and 15 adapted to seal with the work-table and connected to respective jacks 16 and 18. With the inner seal 11 fixed, the gun 1 and the frame 3 move and move the seal 21 until the coupling ring 15 is disposed a distance 21 from ring 10 in the direction of movement of the gun 1; this seal may then remain fixed whilst movement of the gun is accommodated by movement of the ring 10 over the work-table, and in this way one of the seals is always between fixed parts. Ports 7 and 19 allow the inner and outer chambers to be evacuated. Work may be introduced by first lifting the outer wall whilst it is inserted and then lifting the inner wall whilst the outer wall is sealed to the table.
Patent GB-1357778-A (GB)
Title: Polyurethane compositions
IPC: C08G18/00
Filed: 1971-12-22
Abstract: 1357778 Polyurethane foams DOW CHEMICAL CO 22 Dec 1971 59687/71 Heading C3R Polyurethane foams are prepared by reacting, in the presence of a blowing agent, emulsifying agent and catalyst for urethane formation, a polyisocyanate with a diphenyl ether-phenol resin which is the reaction product of a chloromethylated diphenyl ether of the general formula wherein n is 0 or 1, and a phenol having at least one H atom in the ortho or para position and the formula wherein R is H, Cl, Br, cyclohexyl, phenyl or C 1-12  alkyl, which resin has a M.W. of 450 to 1500, the overall NCO/active H ratio being 0À9 to 2À0/1. Most suitably the phenol used to form the resin is phenol itself. Polymeric polyisocyanates are the preferred polyisocyanates. The diphenylether-phenol resins may be blended with polyether or polyester polyols. Aliphatic hydrocarbons or halogenated aliphatic hydrocarbons boiling below 110 C. are the preferred blowing agents. The foams so produced are fire retardant.