baber/WOPTO huggingface dataset:
Patent GB-953940-A (GB)
Title: Improved electrical inverting circuit
IPC: H02M7/515
Filed: 1962-01-31
Abstract: 953,940. Converting; control of A.C. motors. AMPEX CORPORATION. Jan. 31, 1962 [March 14, 1961], No. 3710/62. Headings H2F and H2J. [Also in Division H3] An inverter consists of a bridge of S.C.R.'s whose conduction periods are controlled by a pulse generator to produce an output waveform of predetermined frequency and harmonic content. As shown, Fig. 2, four S.C.R.'s 13, 14, 15, 16 are connected in a bridge circuit 27 and are controlled to produce the output waveform 40 across the load 17 from a D.C. source AB which may be the output of a rectifier 10 supplied from an A.C. source 11. Diagonally opposite pairs of S.C.R.'s 13, 15, and 14, 16 are alternately triggered into condition by pulses from a pulse generator, 19. Another S.C.R., 22, is arranged in a circuit with inductors 23, 24 and capacitors 12, 25, across the D.C. input to the bridge to provide a reverse transient to switch off the conducting elements of the bridge when S.C.R. 22 is triggered by a pulse from generator 19. In an alternative form, Fig. 3 (not shown), opposite pairs of rectifiers are controlled by alternate trains of three pulses supplied through transformers 68, 69, from a gating circuit 76 fed from a variable frequency pulse generator 78. When one pair of S.C.R.'s is conducting the first pulse of the next train fires the second pair of elements, thus short-circuiting the supply. A self-quenching circuit across the bridge input terminals, comprising inductors 51, 57, capacitor 58 and a diode 52, responds to this short-circuit by providing a reverse voltage to extinguish all bridge elements. The second pulse of the train fires the second pair of S.C.R's again and the third pulse is a timing pulse. D.C. may be applied to the load, e.g. to stop an A.C. motor, by operating a switch 79, which applies the generator pulses to S.C.R.'s 56, 62 only. The output waveform in both oases described is chosen such that it has no second or third harmonics or multiples of these. A gate circuit is described by means of which the alternate trains of three pulses can be obtained from the pulses supplied by the pulse generator, Fig. 4 (not shown).
Patent GB-1142575-A (GB)
Title: 1-[m-hydroxyphenyl]-2-[1-methyl-3-phenylpropyl-(1)-amino]-ethanol-(1) p-amino benzoate and methods for its preparation
IPC: A61K31/135
Filed: 1967-01-25
Abstract: 1,142,575. Basic alcohol and salt. TROPON G.m.b.H., [trading as TROPONWERKE DINKLAGE & CO.]. 25 Jan., 1967 [28 Jan., 1966], No. 3725/67. Heading C2C. 1 - [m - Hydroxyphenyl] - 2 - [1 - methyl - 3 - phenylpropyl - (1) - amino]ethanol - (1) p - aminobenzoate is prepared by synthesising the base by standard methods and converting it to the salt; the salt may be reconverted to the base. Fractional crystallization of the salt yields a higher melting and a lower melting form. The base and salt increase the flow rate in the coronary sinus with only a slight increase in the flow rate in the peripheral vascular region; they may be administered in the form of pharmaceutical preparations.
Patent GB-695045-A (GB)
Title: Improvements in or relating to electron discharge devices
IPC: H01J21/14
Filed: 1951-02-15
Abstract: 695,045. Electron beam apparatus. BALLANTYNE, N.Z. Feb. 15, 1951 [Feb. 15, 1950], No. 3754/51. Class 39(i) An electron discharge device comprises a cathode, a focussing electrode partially surrounding the cathode, an accelerating electrode formed as a flat plate and arranged wholly at one side of the aperture in the focussing electrode, a deflection plate or plates and a target plate curved concavely towards the beam, and a target anode, the device being so designed that in operation the beam can be brought to a focus in the vicinity of the target electrodes. In one form, Fig. 1, the device has indirectly heated cathode 3 focussing electrode 4, accelerating electrode 6, negatively biased deflecting electrode 8 curved concavely towards the beam and to which the input signal is applied, positive deflecting plate 7 also concave with respect to the beam, target plate 9 and target anode 10 the amplified output being taken from a circuit connected between the targets 9, 10. The beam is normally focussed on separating plate 11 and the input signals cause it to be deflected alternately over targets 9, 10. The electrode potentials are such that the beam is brought to a focus at the targets, and the beam path may be controlled generally by varying potentials of electrodes 7, 8, 9. The deflecting plate 7 and target plate 9 are connected and provide a negative resistance balanced by the positive resistance of target anode 10, so that the device can be used as a zero resistance audio amplifier. The devices may be used as voltage amplifiers by making the target plate resistance very high as indicated in the modification of Fig. 2 (not shown) where electrodes 7, 9 are combined in a single electrode. In another form, Fig. 3 (not shown) the separator 11 is omitted and the targets are semi-cylinders; this device may be used as a power amplifier. In a modification, Fig. 4, the device has two electrode units fed by a common cathode and serves as a push-pull amplifier if the units are connected in parallel, or as a two stage amplifier if connected as shown in the drawing. The devices may also be used as phase inverters.
Patent GB-1042857-A (GB)
Title: Seco-steroid-guanyl-hydrazones
IPC: C07C281/18
Filed: 1965-01-28
Abstract: The invention comprises guanylhydrazones of seco-steroids, including seco-nor- and seco-homo-steroids, pharmaceutically acceptable acid addition salts thereof, and their preparation by reaction of an aldehydo- or keto-steroid with (a) aminoguanidine or an acid addition salt thereof, (b) thiosemicarbazide, followed by reaction with ammonia, optionally after conversion to an S-alkyl-isothiosemicarbazone, (c) an S-alkyl-isothiosemicarbazide, followed by reaction with ammonia, or (d) hydrazine, followed by reaction with cyanamide.  The compounds of the invention have cardio-active properties.
Patent GB-970990-A (GB)
Title: Process and apparatus for the refining of metals such as steel and cast iron
IPC: C21C7/00
Filed: 1961-02-01
Abstract: <PICT:0970990/C6-C7/1> Metals such as steel or cast iron are refined by blowing into a bath of the molten metal powdered additives which are discharged with a gaseous carrier medium from a reservoir 1 through an injection chamber 24, where the powder-gaseous carrier mixture undergoes turbulence, e.g. by means of compressed air supplied through a detachable injector 28, and through an atomizing chamber 31, where the flow of the mixture is accelerated by a stream of gas injected thereinto, e.g. through an orifice 32, to a velocity enabling the mixture to be injected by a lance (not shown) into the bath of molten metal, the gas feeding the reservoir and atomizing chamber, and preferably also the injection chamber, being provided by a single source at a uniform pressure, e.g. compressed air or other non-reactive gas through a duct 14 supplying a manifold 15 connected to a circular distributer 16 for the reservoir 1 and pipes 38 and 39 for chambers 24 and 31.  As shown, the lower conical portion 2 of the reservoir, provided therein with material distributing cones 20, 21 and 22, is vibrated by a pneumatic vibrator 23, operated by the same gas supplied through a pipe 37 also connected with manifold 15. Pipes 17 and 18, terminating at different levels inside the reservoir, and perforated central column 19, connected to the cones 20, 21 and 22, are connected to the distributer 16.  The discharge of the mixture from the reservoir is controlled by a disc 25 operated by a handwheel 26, the spindle of which bears a perforated baffle 27. The charging aperture of the reservoir is closed by a cover 5 secured by a handwheel 7 mounted on a hingeable yoke 6.  The powdered additives may be injected into the molten metal in a melting furnace or being cast in ladles, and may be of a type effecting an initial deoxidizing and desulphurizing of the metal or a final desulphurizing respectively.  With steel manufacture, iron-containing additives may be used, e.g. iron ore, pyrites ash, mill scale or other ferrous products, in a quantity which replaces that of externally supplied molten steel or scrap iron.  The melting may be effected in an electric furnace, acid-lined converter or rotary kiln.
Patent GB-1367246-A (GB)
Title: Repair of punctures in tubeless tyres
IPC: B29C73/08
Filed: 1972-01-27
Abstract: 1367246 Repairing punctures in tubeless tyres T NISHINO 27 Jan 1972 [28 Jan 1971 10 Feb 1971 26 Oct 1971] 3882/72 Heading B7C A repair plug 31, Fig. 13 comprising a body 33 of vulcanized rubber surrounded by a sleeve 34 of unvulcanized rubber is applied by a tool combination in the following sequence:-First, a tool 11, Fig. 1, having a probe 12 carrying an adhesive or vulcanizing agent in grooves 14 and carrying a sleeve 17 is pushed through the puncture hole until the leading end of the sleeve protrudes on the inside of the tyre, the sleeve being then uncoupled from the tool via screwthreads 16 and left as tool 11 is withdrawn. Second, a plug 31 is inerted into the sleeve with the larger vulcanised-rubber end leading, and a tool 21 having a shank 22 is used to push the plug until it protrudes beyond the sleeve and the tool is engaged with the screwed end of the sleeve. The tool is then withdrawn bringing the sleeve with it and leaving the plug in the condition shown in Fig. 15 where the unvulcanized rubber 34 vulcanizes to the walls of the puncture hole aided by heat generated in use of the tyre on a moving vehicle. Tools 11 and 21 may be combined in a single handle. The plug may have a core 35, e.g. of tyre cord.
Patent GB-891560-A (GB)
Title: Improvements relating to coated fabrics
IPC: D06N3/04
Filed: 1960-02-04
Abstract: 891,560. Coated fabrics. DU PONT DE NEMOURS & CO., E.I. Feb. 4, 1960 [March 12, 1959], No. 4048/60. Class 140. A printable coated material, e.g. a bookcloth, comprises a fabric substrate coated with a composition comprising (A) a mixture of 25- 75% of a vinyl chloride polymer (which may contain up to 50% of another ethylenically unsaturated monomer copolymerized therewith), 75-25% of an acrylic copolymer comprising 94-99% of one or more of methyl, ethyl, propyl and butyl esters of acrylic and methacrylic acids, 1 to 6% of one or more of acrylic, methacrylic and itaconic acids and 0-35% of butadiene-acrylonitrile, and (B) 10-100% of the weight of (A) of a finely-divided inert material including at least one pigment. Vinyl acetate, vinylidene chloride, ethyl fumarate and diethyl maleate are specified as monomers to be copolymerized with the vinyl chloride. If desired the fabric may be coated with a back-size composition comprising, for example, polyvinyl acetate, china clay, starch, sodium carboxymethyl cellulose and animal glue. A top coating of cellulose nitrate may be applied to the vinyl coating if desired.
Patent GB-963352-A (GB)
Title: Production of uranous oxide
IPC: G21C3/48
Filed: 1963-01-31
Abstract: Uranous oxide in a form suitable for dispersion as a sol is obtained by autoclaving a solution of uranous oxychloride, oxybromide, oxyacetate, oxyformate, or mixtures thereof, at 100 DEG  to 200 DEG C., preferably for 2 to 40 hours. The solution preferably contains the equivalent of 0.1 to 20 grams of uranous oxide per 100 ml.  The uranous oxychloride may have been prepared by the reduction of a solution of uranyl chloride, for example by electrodialysis or by reduction with hydrogen in the presence of a suitable catalyst.  The solution thus obtained may be treated with ammonia or other basic precipitant to produce uranous hydroxide which is then redissolved in hydrochloric acid to obtain purified oxychloride.
Patent GB-763052-A (GB)
Title: Improvements relating to gas shielded electric arc welding
IPC: B23K35/38
Filed: 1953-02-13
Abstract: 763,052. Welding by fusion. BABCOCK & WILCOX, Ltd. Feb. 13, 1953 [Feb. 14, 1952], No. 4148/53. Class 83 (4). In the method of gas shielded arc welding claimed in Claim 4 of Specification 736,241 including feeding a low carbon steel electrode under automatic control responsive to arc length fluctuation and using a current density of at least 100,000 amps/square inch the shielding gas is instead a mixture of an inert monatonic gas preferably argon with oxygen, the latter forming 1-20 per cent of the mixture. The oxygen percentage is preferably 3-10. An electric motor 10 controlled by means 12 sensitive to the arc voltage or current dependent on arc length drives rollers 11 to feed a wire 15 through a guide 16 within a manifold 17. Argon or helium from containers 26 or 26<SP>1</SP> and oxygen from container 32 are fed to a mixing chamber 21 and thence into the manifold wherein a screen diffuser 23 breaks up the stream into a non-turbulent envelope. The argon or helium and oxygen need not be premixed but may be fed separately to the manifold. The oxygen is dried before mixing in a chamber 35.
Patent GB-1413444-A (GB)
Title: Plugging apparatus
IPC: F16L55/105
Filed: 1974-01-29
Abstract: 1413444 Plugging apparatus T D WILLIAMSON Inc 29 Jan 1974 [16 Feb 1973] 04154/74 Heading F2P A plugging apparatus for sealing a side opening in a pipe-line or vessel comprises in combination; a fluid tight housing 14, Fig. 1, adapted, e.g. by means of a split tee 11 with a valve mounted thereon, to surround an opening 12 in a pipe 10; a plug carrier 15 movable in the housing; a plug assembly 17 carried by the carrier and including a seal support 20 and a cylindrical seal expander 18 movable toward and away from each other and a hollow, cylindrical, resilient seal member 27 betweeen the support and the expander head 18; the expander having an outside diameter larger than the inside diameter of the seal member when the latter is in the relaxed state. In use the expander is moved by the downward movement of carrier 15, into the resilient seal expanding it radially outwardly into engagement with the walls of the side opening 12. By making the seal member and the cylindrical part of the expander of sufficient length an effective seal can be formed even when the side opening has a diameter approaching that of the inside of the pipe. The expander head being imperforate acts as a unitary fluid barrier across the interior of the seal member. In one embodiment the expander head may be attached, e.g. by bolts 19 to the carrier 15 and have an extension 21 which is slidably connected to the seal support. The seal support may include a portion 24 adapted to engage an inner wall of the pipe or vessel when the plug is in position. To remove the plug assembly from the opening, carrier 15 is moved upwardly pulling the expander from the interior of the seal thus allowing the seal member and its support to be withdrawn into the housing 14, Fig. 1.
Patent GB-137649-A (GB)
Title: Improvements relating to the lubrication of engines
IPC: F16N39/00
Filed: 1919-02-20
Abstract: 137,649. Morton, T. Feb. 20, 1919. Cooling lubricant.-Oil is caused to circulate through the crank chamber of an internal-cornbustion engine by forming at one end a raised trough b which collects splashed oil and delivers it by a channel c to the other end of the crank chamber. At the same time, the oil is cooled by the flow of water through a jacket e at one or both sides of the crank chamber. The crank compartments are separated by ridges i which retain sufficient oil for splash lubrication when the engine is tilted. In the case of marine engines, the cooling-water is drawn from the sea.
Patent GB-1132245-A (GB)
Title: A reactor in which a polymerisation can be continuously effected
IPC: B01F27/94
Filed: 1966-01-31
Abstract: 1,132,245. Polymerisation apparatus; mixers. MICHELIN & CIE (COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN). 31 Jan., 1966 [1 Feb., 1965], No. 4250/66. Headings BIC and B1X. A vertical reactor I suitable for polymerisation has blades 18 and 19 extending the length of the reactor which each have an axis of symmetry offset but parallel to the reactor axis about which the blades rotate, the axes themselves being rotatable about an axis parallel to but not coincident with the reactor axis such that the blades sweep past the inner surface of the reactor with approximately constant clearance. The identical blades are oval in cross section and are mounted between and are driven by pinions 13-16. The pinions 13-16 engage with pinions 9-12 whose shafts are rotatably mounted on plates 4 and 7 which themselves rotate about pins 5 and 8 eccentric with respect to the reactor axis, teeth 5a and 8a on the pins engaging the pinions 9-12. Each of the blades 18 and 19 rotates one half revolution upon one complete revolution of the plates 4 and 7. A fixed hollow cylinder 17, through which heating fluid flows, may be fixed between the ends of pins 5 and 8, the blades also scraping the walls of the cylinder. Mixture to be treated enters continuously through line 22 and is withdrawn continuously through line 23.
Patent GB-190059-A (GB)
Title: Improvements in or relating to carburettors
IPC: F02M9/14
Filed: 1922-02-14
Abstract: 190,059. Pickard, W. Feb. 14, 1922. Spray carburettors.-The fuel nozzle is adjustable axially to vary the proportion of air to fuel. The nozzle b with spraying orifice b<1> slides in a central boring in the carburettor body and has at its lower end a flange d enclosed in a casing e screwed to the body at f. Extending across the casing is a spindle g with an intermediate portion of square section over which fits a sleeve h carrying crank arms i adapted to engage the flange d. The spindle is actuated through an arm j and Bowden wire k. The nozzle b extends through the casing at b<2>, is connected to the float chamber by a flexible pipe l and is provided with a cock m, and a flange n against which presses a spring o. In a modification, the pipe l is connected rigidly to the casing e and the spring bears on the disc d. The nozzle is readilv withdrawn for cleaning by removing the casing e.
Patent GB-905987-A (GB)
Title: Improvements in or relating to travelling wave tubes
Inventor: TOMPSETT JOHN MERVYN
IPC: H01J23/26
Filed: 1960-02-08
Abstract: 905,987. Travelling-wave tubes. ENGLISH ELECTRIC VALVE CO. Ltd. Sept. 23, 1960 [Feb. 8, 1960], No. 4337/60. Class 39 (1). In a travelling wave tube in which the delay line, preferably a helix is supported by a plurality of insulating rods which extend beyond the line at least at one end thereof, the end or ends of the rods have a coating of conductive material connected to a choke or chokes, whereby a discharge path is formed for static charges picked up by the coating, the coating having one or more small gaps. The wire helix 3 is held by three insulating support rods 4 and has straight ends 5, 6 terminating in cylindrical chokes 7, 8 carried on rods 4 and in contact with helical conductive coatings 9 on the rods. The coatings 9 are of colloidal graphite and are made by putting a mesh of two collinear cylindrical tubes with a wire helix between them over the end of a support rod to be coated, rotating the rod and mesh in a chuck and spraying the rod with a suspension of colloidal graphite in a mixture of water and potassium silicate and baking.
Patent GB-410576-A (GB)
Title: Improvements in or relating to cellulose ester compositions
IPC: C08K5/02
Filed: 1933-02-14
Abstract: A cellulose ester composition consists of 10 parts by weight of cellulose acetate, 100 parts of tetrachlorethane, 20 parts of alcohol, and 3 parts of triacetin.  The solution may be brushed, sprayed, or coated upon articles.  The coating has a high degree of hardness, impermeability, elasticity, and resistance to the corrosive action of sea-water.  The adhesiveness of the coating may be increased by addition of talc to the varnish.  Wires and other conductors may be coated by repeatedly passing them through the solution until a coating of the desired thickness has been obtained. Zinc oxide may be added to the varnish to produce opacity.  The solution may be coloured by the addition of aniline dyes, or a marbled effect may be obtained by allowing dyes to fall on to the semi-solidified mass.ALSO:A cellulose ester composition is obtained by mixing 10 parts by weight of cellulose acetate with 100 parts of tetrachlorethane and 20 parts of alcohol and then adding to the viscous solution about 3 parts of triacetin.  The solution may be used as a varnish and brushed, sprayed, or coated upon articles.  The coating has a high degree of hardness, impermeability, elasticity, and resistance to the corrosive action of sea-water.  The adhesiveness of the coating may be increased by addition of talc to the varnish. Wires and other conductors may be coated by repeatedly drawing them through the solution until a coating of the desired thickness has been obtained.  The coatings have a high electric break-down resistance.  Films may be obtained by pouring the solution on to glass, marble, vitrified earthenware, or similar plain or patterned surface.  Translucent films may be obtained by pouring the solution on to a ground glass table.  Zinc oxide may be added to the solution to produce opacity.  The solution may be poured into moulds, or sheets made from the solution may be formed into shaped articles by dies under pressure.  Aniline dyes may be added to the solution or a marbled effect may be obtained by allowing dyes to fall on to the semi-solidified mass.  Films for photographic purposes or in the form of thin transparent paper may be obtained.  Vessels of various types may be obtained by using the solution for uniting sheets made from the solution.
Patent GB-764781-A (GB)
Title: Improvements in or relating to excavators
Inventor: LATHWELL HARRY GEORGE
IPC: E02F9/24
Filed: 1955-02-16
Abstract: 764,781. Earth-excavating apparatus. DELAFIELD, H. F., DELAFIELD, V. M., and DELAFIELD, J. G. Feb. 16, 1955, No. 4637/55. Class 68 (1). In an excavator there is provided a link 4 which is pivoted at one end to a boom 1 and engages and swings by the other end a linkage 7, 8, 9 and 10 that co-acts with a clutch lever 11 of the clutch of a boom-raising means to declutch said clutch when the boom passes a predetermined raised position.
Patent GB-231636-A (GB)
Title: Improvements in or relating to machines and processes for electrically seam brazing or welding together strips of material
IPC: B23K11/06
Filed: 1924-02-23
Abstract: 231,636. Warwick, G. Feb. 23, 1924. Hoops and rings.-In a machine for electrically seam-brazing or welding strips of metal A, A1 of any length, the weld is made by the rollers B, B1 above and below the seam. The top roller swings freely on a fulcrum F parallel to the roller spindle B2 and thus automatically takes up its position on the metal to be welded. The primary current is automatically switched on and off as the weld is being made by carrying the current through an eccentric on which are the contact points M, M1 which, as the eccentric sheave K is revolved, touch the corresponding contacts N, N1 connected to the transformer in the machine. The two overturned edges of a cycle rim may be united to the body of the rim in a similar manner. Two transformers are connected to two pairs of rolls and are energized in turn through the contacts.