baber/WOPTO huggingface dataset:
Patent GB-896563-A (GB)
Title: Improvements in or relating to the graining of lithographic plates
Inventor: ADAMS RONALD ALFRED CHARLES
IPC: C25F3/04
Filed: 1959-12-10
Abstract: 896,563. Etching aluminium strip. ALGRAPHY Ltd. Dec. 6, 1960 [Dec. 10, 1959], No. 42061/59. Class 41. Aluminium or alloys thereof in sheet form are grained or etched by passing two webs of the metal each connected to the two poles of an A.C. source of energy, through an electrolyte, the greater part of each web facing a fixed metal plate acting as electrode mounted in a plane parallel with the web, the two fixed electrodes being connected together electrically, but not to an A.C. source or to the webs except through the electrolyte. No electrolytic action takes place between the webs themselves which may pass through the electrolyte in side-byside position, or may be treated in separate tanks. The etched sheet is suitable for use as lithographic plates. Two webs of aluminium strip 12, 12<1> are spaced apart and pass sideby-side over rollers 16 at the top of a bath 10 and under rollers 17 at the bottom. Fixed metal plate electrodes 13, 13<1> are mounted centrally between the upwardly and downwardly moving webs. Rollers are made of glass or synthetic resin, and the electrode plates 13 are of silver mesh to prevent collection of gas bubbles at the surface. As each plate extends across both faces of the two webs they need not be electrically connected, but may be if desired. The webs are connected, e.g. through feed rollers to the poles of an A.C. source. The electrolyte consists of HCl to which alkali metal or alkaline earth metal chlorides may be added.
Patent GB-953689-A (GB)
Title: Polymerisation of butadiene using monovalent magnesium halide catalysts
IPC: C08F36/16
Filed: 1962-11-07
Abstract: A polymerization catalyst for butadiene comprises the reaction product of a monovalent magnesium compound, and 10 to 50% by weight of the magnesium compound, of TiI4.  The magnesium compounds are preferably prepared by the pyrolyses of aryl magnesium halides e.g. phenyl or naphthalene magnesium bromide. The compound may be magnesium monobromide. The polymerization is generally effected in a hydrocarbon diluent or solvent.  The polybutadiene is recovered by convention techniques, e.g. addition of methanol, and the polymer has a high cis 1:4-configuration.
Patent GB-958533-A (GB)
Title: Improvements relating to automatic vehicle guidance systems
Inventor: LAWSON ROBERT
IPC: G05D1/02
Filed: 1961-11-24
Abstract: 958, 533. Automatic steering control. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Oct. 16, 1962 [Nov. 24, 1961], No. 42145/61. Heading G3R. In a system for automatically steering a vehicle along a selected one of a number of paths parallel to an energized conducting wire, the output of one or other or both of two electrical detector coils, having mutually inclined axes disposed on the vehicle in a plane or planes extending transversely to the fore and aft axis, may be selectively combined with the output of reference means also responsive to the energization of the wire to control steering means restoring the vehicle to the chosen path. As described, six overlapping cable loops A-F, four of which are shown in Fig. 1, are buried below ploughing level in a field and supplied with HF alternating current through a selector switch SS. Initially loop A is energized and a tractor T pulling a plough P carries a three-coil pick-up head SH connected so that the tractor moves parallel to, but displaced to the right of, the right hand side of loop A. When, near point P, a pick-up head PH crosses a transverse cable C 2  energized at a different frequency, means PA are operated to lower the appropriate plough shares. In a similar manner towards the end of the straight run near point T, the effect of a transverse cable C 1  causes the shares to be raised and also changeover of the connection of the coils in pick-up head SH so that the tractor moves to the other side of the cable as shown at X, and returns parallel to, but displaced to the other side of loop A, lowering and raising the plough shares when crossing cables C 1  C 2  as before. Changeover of the connections of pick-up head SH then take place and a further circuit is made directly over loop A followed by a third circuit displaced to the other side of loop A. When, at the end of these three overlapping circuits, cables C 1  C 2  have been crossed 12 times a counter CO operates a H. F. A.C. transmitter TR on the tractor so that a fixed receiver R operates switch SS to transfer energization from loop A to loop B. Three more overlapping circuits are then made in the vicinity of loop B. Loops C-F are eventually energized in turn to produce groups of three overlapping circuits to cover the whole field. Pick-up head SH may be moved, or additional heads provided; if more than three overlapping circuits per loop are desired. Specifications 932,266, 945,075 and 958,532 are referred to.
Patent GB-1199919-A (GB)
Title: Improvements in and relating to Means for Testing Pipes for Leakage
Inventor: MAXFIELD TREVOR WILLIAM FRANK
IPC: G01M3/28
Filed: 1966-09-23
Abstract: 1,199,919. Detecting leaks in pipes. CARVER & CO. (ENGS.) Ltd. Sept. 19, 1967 [Sept. 23, 1966], No. 42623/66. Heading G1S. Apparatus for testing pipes for leakage comprises two sealing members 1, 2 each consisting of a tube 6 to the end flanges 7 of which a sleeve 8 of rubber or plastics material is secured by clamping rings 9. Bearing discs 13, 17, 18 are screwed on to the ends of a supporting tube 10 and a supporting tube or rod 12, the latter having a brush 20 and a ring 19 secured to its leading end. Chains 16 entered between the discs 13 and a fluid supply line is linked to chains 29. The fluid supply line feeds compressed air to a tube 22 connected to the sealing members 1, 2 by tubes 21 and to a tube 23. A cable is connected to the ring 19 and the apparatus is hauled into an underground pipe, for example, compressed air then being fed to the members 1, 2 which expand to seal off the space between them. This space is then supplied with compressed air through the tube 23 and a pressure gauge in the supply line to the tube 23 is observed to see if any leakage occurs. On releasing the pressure, the apparatus is hauled to the next point along the pipe and the test repeated.
Patent GB-944110-A (GB)
Title: Oxidation of organic compounds
IPC: C07D303/04
Filed: 1960-12-12
Abstract: A hydroxyl-group is introduced into a C2-30 organic compound containing a carbon atom attached to oxygen, nitrogen or halogen, or containing an olefinic double bond, an aromatic group, or a carbocyclic group of at least 8 carbons, by contacting the compound in the liquid phase at 100-300 DEG C. with molecular oxygen in the presence of a boric acid compound (see below), and converting the resulting borate ester to the alcohol.  The boric acid compound is defined as H3BO3 or a compound which generates this on contact with water, e.g. B2O3, borate esters and borinic acids and boronic acids and their esters with C1-4 alcohols.  The oxygen may be diluted, e.g. with nitrogen.  Solvents may be used, e.g. benzene, chlorobenzene, dichlorobenzenes, bromobenzene, dibromobenzenes, and carbon tetrachloride. The borate ester may be converted to the alcohols by hydrolysis with water or by esterinterchange with a low molecular weight alcohol. Specified types of reactant are alcohols (e.g. ethanol, propanol, butanol and hexanol and C8-18 alcohols, which give diols or polyols), aromatic alcohols (e.g. tolylcarbinol and alkylphenols, which give aromatic polycarbinols and phenolic alcohols and glycols), glycols, olefines (which give unsaturated alcohols) (e.g. ethylene, propylene, 2-methyl-1-butene, 2-methyl-2-pentene, heptene, 2-butene, isobutene; C5-20 alicylcic olefines, e.g. cyclohexene and cyclododecene and C1-4 alkyl derivatives); polyolefines (e.g. C5-12 non-conjugated di- or polyolefines such as hexadiene-1, 5, 2-methylpentadiene-1, 4, 3- and 4-vinylcyclohexene, 1, 4- and 1, 5-cyclooctadiene and 1, 4, 7-, 1, 4, 8- and 1, 5, 9-cyclododecatriene), acids and esters (e.g. stearic and other C10-30 acids, C8-18 alkanoic acids including lauric octanoic and other acids derived from vegetable and animal fats and oils; caproic acid; methyl esters of p-toluic acid and naphthenic acids; polybasic acids such as glutaric and their esters); saturated and unsaturated C8-20 cyclic aliphatic hydrocarbons, and alkaryl and aralkyl hydrocarbons (e.g. toluene, xylene, diisopropylbenzene, ethylbenzene, durene and pseudocumene).  Examples oxidise: (1)-(4), (6) a C13 monohydric branched chain oxo alcohol borate ester (prepared by esterification) to a glycol; (5) propanol to propanediol; (7) 2-methyl-2-pentene to an unsaturated alcohol; (8) methyl stearate to methyl hydroxystearate; (9) 2-ethylhexanol to a glycol; (10), (22) mixed xylene isomers to tolylcarbinols and aldehydes and p-toluic acid; (11), (14), (24) cyclododecane to cyclododecanol and cyclododecanone; (12), (17) cyclooctene to cyclooctenol; (13) a C13 monohydric alcohol borate (prepared by esterification) to a glycol; (15), (16), (18) cyclododecene to cyclodecenol and cyclododecene oxide; (19) tolylcarbinol to a xylene diol; (20) diisopropylbenzene to side-chain hydroxylated products; (21) p-xylene to alcohols; and (23) pseudocumene to alcohols.
Patent GB-1249993-A (GB)
Title: Improvements in or relating to tools adapted for use in blind-riveting
Inventor: HENSHAW JAMES NORMAN
IPC: B21J15/06
Filed: 1968-09-07
Abstract: 1,249,993. Hydraulic intensifiers. GEORGE TUCKER EYELET CO. Ltd. Sept.8, 1969 [Sept.7, 1968], No.42672/68. Heading F1P. [Also in Division B3] A hydraulic intensifier 12 for a blind riveting tool comprises a sleeve 38 which is slidable relative to a hollow, stepped shaft 20 by air under pressure to cause hydraulic fluid to be forced through the shaft 20 from an annular chamber 46 formed between the sleeve 38 and shaft 20. When a valve spool (98) Fig.1 (not shown) on the riveting tool is depressed, air under pressure is admitted from a hose (100) to a hose 70 causing a piston 60 attached to the sleeve 38 to descend. Hydraulic fluid is thereby forced from the chamber 46, through passageways 47, 48 in the shaft 20, through a hose 90 and into a hydraulic cylinder (not shown) continuing a spring-biased piston which forms part of the pulling device for the rivet mandrel. When the spool (98) is released, the piston 60 is returned to its initial position. The shaft 20 is surrounded by a tube 21 between its one end and a sealing ring 56, and is provided in this area with flats (82) Fig.4 (not shown) so that the portion of the shaft 20 above the sealing ring 56 is open to atmosphere.
Patent GB-1483771-A (GB)
Title: Speed governors
IPC: F02D1/04
Filed: 1974-10-02
Abstract: 1483771 Centrifugal governors ROBERT BOSCH GmbH 2 Oct 1974 [3 Oct 1973] 42676/74 Heading G3B A speed governor for a fuel injection pump comprises a centrifugal governor 20 locatable in a fuel suction chamber 7 of the pump and adapted to adjust the pump metering member 3 against the action of a working chamber 41 whose volume is varied over a predetermined speed range, and which is communicable with chamber 7 by way of throttle opening 42. In operation, as the engine speed increases, centrifugal governor 20 pivots a lever 18 against the force of idling spring 31, so that a sliding valve 16 is displaced downwards on the rotary and reciprocatable pump piston 3 and the flow of fuel to the injection valves via chamber 7 and passages 6, 5, 4, 8, 9, 10, 11, is reduced, due to fuel flowing back to chamber 7 via a transverse passage 17. The fuel is supplied to chamber 7 by a pump 13, and the pressure is controlled by a valve 15. As the speed continues to increase, lever 18 is further deflected, until its abuts a stop 32 and the main control spring 33 is compressed, and as piston 40 moves to reduce the volume of chamber 41 fuel is forced into chamber 7 through throttle opening 42 to provide a damping of any vibrations which may occur. The pre-tensioning of spring assembly 21 can be varied by moving a piston 34 in a bore 35 by a lever and rack and pinion assembly 36, 37, and a full load stop 28 is provided. The part of the speed range which is attenuated may be the idling range, the range controlled by the main spring 33, or a mixture of both, and this is determined by the different forms of spring assemblies, working chamber 41, and throttle openings 42, Figs. 3, 5, 7 (not shown).
Patent GB-968197-A (GB)
Title: Methods of electrolytically producing dye images on image-wise exposed photoconductive material
IPC: G03G17/02
Filed: 1960-12-12
Abstract: 968,197. Developing conductivity images by electrodeposition of dyes. KODAK Ltd. Dec. 12, 1960 [Dec. 11, 1959], No. 42766/60. Drawings to Specification. Heading G2H. [Also in Division C7] An image-wise exposed photoconductive material is developed by electrolytic deposition of dye molecules from an aqueous solution thereof. Typically a photoconductive layer comprising an oxide or sulphide of zinc, bismuth, antimony, lead, cadmium or tellurium on a conductive support of aluminium foil or paper, cellulose ester, glass, ceramic made conductive as by application of a metal foil is exposed to light as by contact printing and the conductivity pattern so formed is developed either simultaneously with or subsequently to exposure by cathodically depositing on the conducting parts of the pattern a water-soluble or aqueous alcohol-soluble dye from a predominantly aqueous solution containing if necessary methanol or ethanol in which the chromogen is a positive ion. Typically the dye solutions contain 0. 5 to 2% by weight of dye and electrolysis is effected with an applied potential of 30 to 100 volts either D.C. or A.C. due to the rectifying action of the photoconductorelectrolyte (dye solution) junction. The electrolyte dye solution which may contain methyl or ethyl , alcohol, weakly ionized compounds and less desirably gelatin or gum may be applied to the exposed photoconductive layer by either a conductive transfer roller or a sponge electrode which is moved progressively over the layer, whereafter excess dye solution may be removed with a damp sponge to leave a deposited dye image. The specified dyes are of the triphenyl methane, azine, thiazine, or oxazine type. Whereas most of the dyes deposited exhibit their normal colours, in the case of depositing Cotton Blue BB (Schultz No. 1026) on a coloursensitized zinc oxide layer on an aluminium foil the resulting image is magenta in colour although moistened dye removed from the image by a sheet of absorbent paper is blue. If anodic deposition is used to effect development the photoconductive material may be cadmium sulphide and the dyes used may be bisazocarboxylate or bisazosulphonate dyes.
Patent GB-1439868-A (GB)
Title: Dust filter
IPC: B01D46/18
Filed: 1973-09-13
Abstract: 1439868 Gas filter TRUTZSCHLER & CO 13 Sept 1973 [20 Sept 1972] 42971/73 Heading B1T Gas is filtered by passage from inlet 2 to outlet 3 through a succession of filter plates 7 which are carried by and periodically moved forwards on an endless belt 4 controlled by a pressure switch 16. The downstream plates are always partly clogged, which assists filtration of small particles. Plates 7 are spring-loaded to the perpendicular position on the belt but are folded back by guides 12 and then allowed to spring back over hopper 15 to shake off the dust, which passes through air lock 19 into removable container 25. Channel 11b is sealed by sealing strips 7a on plates 7 engaging stops 9 of adjacent plates.
Patent GB-1501957-A (GB)
Title: Mixer for kneading and rolling
IPC: B29B7/20
Filed: 1975-10-21
Abstract: 1501957 Mixing apparatus WERNER & PFLEIDERER 21 Oct 1975 [11 Dec 1974] 43204/75 Heading B1C A mixing machine for kneading and rolling material such as rubber or PVC comprises a mixing chamber 6 with two parallel mixing shafts 12, 13 driven in opposite directions at the same speed, the shafts supporting arcuate roller surfaces 21, 22 adapted to confront each other during a part of each cycle of rotation of the shafts leaving a narrow roller gap 26 therebetween, and kneading blades 27, 28 spaced peripherally of the shaft from the roller surfaces so as to provide a simple kneading action to the mix during the remainder of each cycle of rotation of the shafts. The blades 27, 28 are angled to their direction of movement and the outer roller surfaces may be fluted as at 32. The machine has a charging ram 8 and a bottom discharge member 18 pivoted at 16 and forming part of the chamber wall when in the closed position.
Patent GB-897472-A (GB)
Title: Polymerisation process
IPC: C08F136/04
Filed: 1960-12-15
Abstract: Polymers of conjugated diolefinic hydrocarbons having 4 carbon atoms in the unsaturated chain having at least 70% of their units in the trans-1,4 configuration are prepared by polymerizing said hydrocarbons in the presence of an iodine-containing catalyst comprising an admixture of (1) a compound of a heavy metal of Group IVa of the Periodic Table reducible by an organometallic compound of a metal of Group IIIb, (2) an organometallic compound of formula Me R1 R2 R3 in which Me is a metal of Group IIIb, R1 and R2 are hydrocarbon radicals and R3 is hydrogen, halogen, hydrocarbon or oxyhydrocarbon, and (3) a thioether, in which at least one of (1) and (2) contains iodine.  Specified hydrocarbons are butadiene and isoprene.  Many suitable catalyst components are listed including (1) halides, alkyl halides, alkoxides and halo alkoxides of titanium, zirconium, hafnium and thorium, and (2) aryls, alkyls, alkyl hydrides, alkyl halides and alkyl alkoxides of aluminium, gallium, indium and thallium.  Iodine may be present in component (1) or (2) or introduced therein by reacting one or both components with an iodine-releasing compound, e.g. iodine, hydrogen iodide, iodine monochloride and iodine monobromide.  Specified thioethers are dimethyl, di-ethyl, di-n-propyl, di-isopropyl, di-n-butyl, di-octyl, methylethyl, isopropylethyl, isopropylmethyl, isopropylbutyl, phenylmethyl and phenylethyl sulphides. Polymerization may be effected in liquid media, e.g. pentane, hexane, heptane, cyclohexane, benzene, toluene and xylene.  The reaction may be terminated by adding ethanol, and the products treated with ethanol containing phenyl-beta-naphthylamine. Examples describe the polymerization of butadiene in the presence of catalysts comprising titanium tetraiodide, aluminium triisobutyl and (1) dimethyl sulphide, (2, 5, 6 and 7) diethyl sulphide, (3 and 8) di-n-butyl sulphide and (4) dioctyl sulphide; titanium tetraiodide, diethyl sulphide and (9) diethyl aluminium iodide, (10) diethyl aluminium chloride and (11) diisobutyl aluminium hydride; diethyl aluminium iodide, diethyl sulphide and (12 and 13) titanium tetrachloride, (14) titanium dichlorodibutoxide, (16) titanium dichlorodiethyl and (17) titanium dichlorodiacetate; and (15) tetrabutyl titanate, diethyl aluminium iodide and diisopropyl sulphide; and the polymerization of isoprene in the presence of titanium tetraiodide, aluminium triisobutyl and diethyl sulphide.
Patent GB-1021648-A (GB)
Title: Mixing apparatus
IPC: C08J9/30
Filed: 1962-11-15
Abstract: 1,021,648. Mixing apparatus; forming foam. H. GIESEMANN. Nov. 15, 1962 [Nov. 15, 1961; March 3, 1962], No. 43226/62. Heading B1C. In an apparatus for mixing a synthetic resin and a foam forming medium containing the hardener for the resin to make a solid foam plastic material, the foaming medium is admitted by pipe 10 to a tube 13 having a labyrinth comprising movable glass balls 15 and screens 16, and is given a rotary motion by vanes 17a as it is discharged into the mixing chamber 17. The resin is admitted from pipe 11 to tube 14 coaxial with tube 13, and is discharged through an atomizer nozzle 18 having one or more orifices 21 to impinge on an axially adjustable body 23; the impingement body 23 may be rotatable at a controlled speed and its face may be provided with blades. The materials may be supplied by gear or other pumps or by air pressure, and may additionally be propelled by compressed air admitted through pipe 12. Further compressed air (or carbon dioxide) may be admitted direct to the mixing chamber through a tube 28 lying alongside the tube 14. In a modification, Fig. 6 (not shown), the tube 28 is coaxial with and surrounds the tube 14 and discharges across the radial orifices 21a of the nozzle 18a, the closed end 23b of which forms the impingement body. In another embodiment, Fig. 9, the valves 10a, 11a, 12a controlling the admission of the components are connected by links 31, 31a, to move in unison. Compressed air is admitted from pipe 12 through an adjustable orifice 40 to an annular chamber 41 and thence through a circular row or rows of orifices 45, 46 to mix in tube 13 with foam forming medium, which enters the tube 13 through a ring of adjustable orifices 43. Air also passes from chamber 41 through adjustable orifices 50 to a second annular chamber 42 and thence to tube 14, when it forms a cylindrical annular curtain 38 round synthetic resin entering from the tubular member 36.
Patent GB-1244391-A (GB)
Title: Safety device and method of using the same
IPC: E04G21/32
Filed: 1969-08-29
Abstract: 1,244,391. Safety net for workmen. PEDLEY-KNOWLES & CO. 29 Aug., 1969 [6 Sept., 1968], No. 43240/69. Heading E1S. A rectangular safety net for workmen has diamond-shaped meshes 3 and a peripheral rope 7 slidably attached to the projecting corners of the outermost meshes. The peripheral rope is supported at the four corners and tightened at one corner D, and may comprise a single rope with its end connected together by a chain 10, Fig. 7, or two ropes connected together at corner A. The net is suspended either from I-sectioned beams 14, 15, as shown, using clamps 16, 26 or 64, or from I-sectioned columns, using clamps (82), Fig. 20 (not shown). Rings 4 are preferably used for connecting the meshes to the peripheral rope, and extra rings 68, Fig. 14, can be fastened in rows to the net to allow the peripheral rope to be threaded therethrough when a smaller net is required. The peripheral rope 7 can slide relative to the suspending means (e.g. ring 9) at two diagonally-opposite corners (e.g. B and C) to allow the net to be used to cover a number of different rectangular configurations.
Patent GB-1138793-A (GB)
Title: Polymerisation of beta-lactones
Inventor: CUROTTI DARIO PAOLO
IPC: C08G63/82
Filed: 1967-09-22
Abstract: 1,138,793. Polymerizing beta - lactones. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 22 Sept., 1967, No. 43303/67. Heading C3R. Polyesters are made by polymerizing (preferably at 0‹ to 150‹ C.) one or more beta-lactones, at least 50 mole per cent being pivalactone, in a liquid hydrocarbon diluent having a boiling point of below 300‹ C. and in the presence of a solid carboxylate anion-containing initiator at least 80% by weight of which has a particle size of not more than 200 microns but larger than 5 microns. The initiator is substantially insoluble in the diluent, is free from active hydrogen atoms and is either (a) a preformed betaine having a molecular weight below 30,000 and in which the cation may be, e.g. ammonium, pyridinium, morpholinium, phosphonium, arsonium, stibonium or sulphonium, or (b) a " living " prepolymer having a molecular weight of 200 to 30,000 and which has been obtained by reacting a beta-lactone with a nucleophilic agent in a molar ratio of between 20 : 1 and 1 : 40, suitable initiators being phosphines, stibines, arsines, amines, sulphides, sulphoxides, an alkali metal salt, an alkali metal phenolate, thiophenolate, alcoholate or mercaptide, an alkali metal alkyl or aryl, a quaternary phosphonium, stibonium, arsonium, ammonium salt or a tertiary sulphonium compound. Preferably the " living " prepolymers are prepared in an inert fluid diluent and in the presence of a surface-active substance having a hydrocarbon chain with a molecular weight of at least 200 and having one or more hydroxyl, amino, carbonamido or imido groups.