baber/WOPTO huggingface dataset:
Patent GB-1528609-A (GB)
Title: Manufacture of 2-hydroxynaphthalene-3-carboxylic acid
IPC: C07C51/15
Filed: 1975-12-18
Abstract: 1528609 Preparation of 2-hydroxynaphthalene-3-carboxylic acid BASF AG 18 Dec 1975 [20 Dec 1974] 51794/75 Heading C2C A process for the manufacture of 2-hydroxynaphthalene-3-carboxylic acid comprises carboxylating an anhydrous alkali metal salt of #-naphthol by reaction with carbon dioxide at a temperature of from 180 to 300‹ C., adding after said carboxylation an alkali metal hydroxide in an amount of from 0À6 to 1 mole per mole of bis-alkali metal salt of 2-hydroxynaphthalene-3-carboxylic acid formed as a result of the carboxylation, dehydrating the resulting mixture and thereafter effecting further carboxylation by reaction with carbon dioxide, the process optionally including one or more further stages each comprising the steps of adding alkali metal hydroxide, dehydration and carboxylation in which case the amount of alkali metal hydroxide added in each repetition is based on the amount of bis-alkali metal salt of 2-hydroxynaphthalene-3-carboxylic acid formed in the immediately preceding carboxylation stage.
Patent GB-1169040-A (GB)
Title: Wall Plug for Securing a Facing Plate to a Wall
Inventor: FISCHER ARTUR
IPC: F16B5/00
Filed: 1966-11-18
Abstract: 1,169,040. Wall plugs. A. FISCHER. 18 Nov., 1966 [8 Dec., 1965], No. 51836/66. Heading F2H. Wall plug for securing a facing plate 15 to a wall 14 comprising a cylindrical sleeve composed of semi-cylindrical shells 4 and 5 which, by means of projections 6, 7 and recesses 8, 9 are detachably press-fitted to one another, one only of the shells being extended at 2a and provided with transverse facing plate retaining means 16; and a wedge which is drawn into the sleeve to expand it. The retaining means may be a pin which can be widened at points 18 to prevent it slipping out of an aperture in the extension 2a in one direction, a metal strip inserted through a slot in the extension, or anchoring lugs formed by bending the extension outwards. The plug is secured against rotation in a bore by outwardly extending lugs, and is provided with a washer secured by inwardly directed lugs for supporting the head of the screw. The sleeve is formed of steel or brass.
Patent GB-1244026-A (GB)
Title: Antibacterial agents and process for their preparation
Inventor: CRON MARTIN JOHN
IPC: C07H15/207
Filed: 1968-11-01
Abstract: 1,244,026. Kasugamycin derivatives; imidates. BRISTOL-MYERS CO. 1 Nov., 1968 [1 Nov., 1967], No. 51855/68. Headings C2A and C2C. Novel derivatives of the antibiotic kasugamycin having the formula wherein R is hydrogen or C 1-10  alkyi and non- toxic pharmaceutically acceptable acid addition salts thereof may be prepared by (A) reacting kasugamycin, or a pharmaceutically acceptable non-toxic salt thereof with an appropriate [3- diketone in a solvent system consisting of water or an aqueous solution of an inert organic solvent at a pH below 7.5 to produce a novel first intermediate product of the formula wherein Z is the ketonic residue of a Schiff base derived from a #-diketone having the formula in which R<SP>1</SP>, R<SP>2</SP> ,  R<SP>3</SP> and R<SP>4</SP> are alike or different and each is hydrogen or C 1-10 alkyl; (B) reacting the first intermediate product with an aqueous solution of an alkaline earth metal hydroxide, with heating, to produce a novel second intermediate having the formula wherein Z is as defined above; (C) reacting the second intermediate compound with an imidate ester of the formula in which R and R<SP>5</SP> are hydrogen or C 1-10 alkyl, or with a mineral acid salt thereof, in a C 1-10  aliphatic alcohol, at a pH of 6.5 to 8.0 to produce a novel third intermediate compound of the formula wherein R is hydrogen or C 1-10 alkyl and Z is as defined above; and (D) reacting an aqueous solution of the third intermediate with bromine water or nitrous acid at 0 to 40 C. Step (A) may be conducted at pH 6 to 7 in aqueous methanol, step (B) in an aqueous solution of barium or calcium hydroxide and step (C) at pH 7À0 to 7À4 in methanol or ethanol. The hydrochloride, hydrobromide, hydroiodide, C 1-10  alkyl sulphate, C 1-10 alkyl and aryl sulphonate, phosphate, sulphate, maleate, fumarate, succinate, tartrate, citrate and amine salts are referred to. The compounds may be purified by crystallization and chromatography. Pharmaceutical compositions having antibacterial activity for topical, oral or parenteral administration comprise compounds of Formula I or a pharmaceutically acceptable non-toxic acid addition salt thereof and a diluent or carrier. Methyl acetimidate, propionimidate and butyr. imidate hydrochlorides are prepared by reacting acetonitrile, propionitrile or butyronitrile respectively with methanol and hydrogen chloride. Isobutyl formimidate hydrochloride is prepared by the reaction of formamide and isobutylchloroformate.
Patent GB-1100518-A (GB)
Title: Improvements in or relating to marine anchors
IPC: B63B21/46
Filed: 1966-11-21
Abstract: 1,100,518. Anchors. G. E. DIAL. 1 Dec., 1966 [21 Nov., 1966], No. 51996/66. Heading B7S. An anchor comprises a main plate shaped to V-formation about a longitudinal axis so as to define two side-plates 1, 2 which define a fluke at each end of said longitudinal axis (a sharp fluke 3 at one end and a blunt fluke at the other) and a shank 7 pivotally mounted (at 6) between, the side-plates to pivot in a plane bisecting said V-formation, the pivotal range of the shaft being limited to an acute angle one limit of which permits the shank to extend substantially parallel to said longitudinal axis. One of the side plates has an edge 5 bent outwardly (as in Fig. 1), or inwardly. The shank has an elongated aperture permitting a shackle 9 to slide to settings on either side of the pivotal axis 6, the aperture being formed by a slide-bar 8 secured at its ends to the shank 7.
Patent GB-1277601-A (GB)
Title: An injectable local anaesthetic
IPC: A61K31/445
Filed: 1969-10-24
Abstract: 1277601 Injectable local anaesthetics ESPE FABRIK PHARMAZEUTISCHER PRAPARATE GmbH 24 Oct 1969 [31 Oct 1968] 52143/69 Heading A5B Injectable local anaesthetics contain in aqueous solution a local anaesthetic active agent, a vasoconstrictor and a beta-receptor blocking agent. The solution preferably contains 0.2 to 4% by weight of the local anaesthetic, 10 to 100 ppm of the vasoconstrictor and at least 50 ppm of the beta receptor blocking agent. The local anaesthetic active agent may be #-diethylamino-2, 6-dimethylacetanilide (lidocaine), #-butylamino-2-methyl-6-chloroacetanilide, rac N-methylhexahydropicolinyl-2, 6-dimethylanilide and/or 3-methyl-2-(diethylamino)-acetylamino benzoic acid methyl ester in free base or acid addition salt form such as a hydrochloride, phosphate or bitartrate and the vasoconstrictor may be adrenalin, nor adrenalin and/or p-(2- amino-1-hydroxy-propyl)-pyrocatechol (Corbadrin). The beta-receptor blocking agent may be one or more substances of the general formulae: wherein Ar is an unsubstituted or methyl-, allyl-, or allyloxy-substituted phenyl or naphthyl radical or a heterocyclic radical of aromatic character e.g. indolyl and Ar is an unsubstituted or chloro-substituted phenyl or naphthyl radical, in particular propranolol, 1- isopropylamino-3-[o-allyl oxy (or allyl) phenoxy]-2-propanol, 1-isopropylamino-3-[m-methylphenoxy]-2-propanol and/or 1-isopropylamino-3-indolyl-2-propanol.
Patent GB-1358138-A (GB)
Title: Multi vibrator circuit
IPC: H03K3/017
Filed: 1972-11-14
Abstract: 1358138 Pulse modulation circuits; pulse and triangular wave oscillators PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 14 Nov 1972 [17 Nov 1971] 52506/72 Headings H3T and H4L A variable frequency multivibrator includes first and second transistors T11, T12, Fig. 2 respectively, having supply electrodes intercoupled by a capacitor C, whilst the control electrode of at least one, i.e. T12 is coupled to the output of the other T11- as shown via emitterfollower T19-first and second output currents of a current source circuit being supplied to either end of the capacitor C, the magnitudes of these currents depending upon a control signal V f  applied to the current source circuit. The arrangement is characterized in that the current source circuit includes a differential stage T13, T14 having a sum terminal to which a constant current I 0  is supplied, and two output terminals between which the current I 0  is divided in accordance with the control signal V f . The current source circuit further includes a four quadrant multiplier circuit, comprising transistors T15, T16, T17, T18, having two input terminals connected to the output terminals of the differential stage T13, T14, two output terminals which supply the output currents of the current source circuit, and two input control terminals, to at least one of which-i.e. the base of transistor T18-a switching signal depending upon the state of the multivibrator is applied, so that the output currents of the current source circuit are alternately equal to the respective currents at the input current terminals of the multiplier circuit. A second embodiment, which is largely independent of supply voltage, is symmetrical the bases of each of the transistors T21, T22, Fig. 3 being coupled to the collector of the other via emitter-followers T29, T30 respectively: in addition, each of the two input terminals of the four quadrant multiplier circuit comprising transistors T25, T26, T27, T28, is coupled to the base of the corresponding transistor T21, T22, via diodes D24, D25, D26 and D21, D22, D23 respectively. A further modification comprises the replacement of the differential stage T23, T24 and current source S21 by two intercoupled current inverter circuits. While as described a rectangular waveform V 0  may be obtained from the collector circuit of transistor T12 or T22, the output may be taken across capacitor C and is then triangular. The specification also describes a known circuit, comprising transitors T1,T2, Fig. 1 with emitters coupled by capacitor C and the base of transistor T2 connected to the collector of transistor T1, the currents to the capacitor C being determined by a differential circuit comprising transistors T3, T4, the control voltage V f  being applied over emitter-follower T5: the limits to which the base potential of transistor T2 can be driven are determined by diodes D1, D2 in conjunction with Zener diode chain Z1, Z2, Z3.
Patent GB-1475555-A (GB)
Title: Feeding of electrolyte to electrochemical cells
IPC: H01M50/77
Filed: 1974-12-09
Abstract: 1475555 Electrolyte circulation in zinc-air batteries COMPAGNIE GENERALE D' ELECTRICITE 9 Dec 1974 [11 Dec 1973] 53077/74 Heading H1B A method of supplying electrolyte to cells grouped in modules l 1 , l 2 , l 3  ... l m  comprises locating first pumps 8 1 , 8 2  ... 8 m-1  in the flow circuit between each pair of modules, locating a second pump 9 downstream of the last module and locating a further pump 10 upstream of the modules. The cells are of the zinc-air type as described in co-pending application 52403/74 and the electrolyte comprises potassium hydroxide solution containing zinc powder in sussuspension. The arrangement of the pumps ensures that the average pressure of the electrolyte in each module remains slightly below atmospheric pressure to enable the efficient operation of the catalyst in the cells. The pumps 8 compensate for the pressure drop in each preceding module whilst the pumps 10 and 9 maintain the input and output pressures at values which ensure suitable average pressures in the modules.
Patent GB-1440670-A (GB)
Title: Lactam derivatives
IPC: C07D211/78
Filed: 1973-11-16
Abstract: 1440670 D-Glucaro-1,5-lactam esters MEIJI SEIKA KK 16 Nov 1973 [17 Nov 1972 29 Nov 1972] 53406/73 Heading C2C Novel esters of Formula (I) in which R is alkyl, are prepared by reacting the corresponding acid, or an inorganic salt or organic amine salt thereof, with an alkyl iodide, bromide or chloride, or by reacting the acid, or equal equivalents of a salt of the acid and a mineral acid, with a diazoalkane in an organic solvent. The reactions are carried out in a solvent capable of dissolving the starting materials. Pharmaceutical compositions having a #- glucuronidase inhibitory activity comprise a compound (I) together with a suitable diluent and/or carrier. The compositions may be administered orally.
Patent GB-1173400-A (GB)
Title: A Process for Preparing 1-methyl-2, 3, 5, 6-tetrahydro-5-semicarbazido-6-hydroxy-indole-3-sulphonic acid and alkali metal salts thereof
IPC: C07D209/30
Filed: 1968-11-13
Abstract: 1,173,400. Indole-sulphonic acid derivative. ARCHIFAR S.p.A. 13 Nov., 1968 [25 June, 1968], No. 53722/68. Heading C2C. A process for preparing 1-methyl-2,3,5,6- tetrahydro - 5 - semicarbazido - 6 - hydroxyindole - 3 - sulphonic acid and alkali metal salts thereof comprises treating adrenaline with an aqueous solution of alkali metal sulphite or bisulphite to give 1 -(3,4-dihydroxyphenyl)-2- methylamino - ethanesulphonic acid, treating said acid in aqueous solution at substantially neutral pH and at a temperature of from 0‹ to 40‹ C. with a moderate oxidizing agent, e.g., potassium ferricyanide, and semicarbazide and isolating the product in the form of the salt; the free acid is obtained by acidifying an aqueous solution of said salt. Preferably, the adrenaline is prepared in situ from adrenalone hydrochloride utilizing hydrogenation.
Patent GB-1487947-A (GB)
Title: Carbon fibres
IPC: D01F11/14
Filed: 1974-12-13
Abstract: 1487947 Carbon fibres DOW CHEMICAL CO 13 Dec 1974 53997/74 Heading ClA [Also in Division C3] A carbon fibre having a Young's modulus (parallel to the fibre axis) of at least 12 Î 10<SP>6</SP> p.s.i. (8À4 Î 10<SP>5</SP> kg./sq. cm.)m and characterized in its surface being coated with a substantially continuous coating of amorphous carbon, is claimed per se. It may be prepared by depositing a thermally carbonizable organic precursor on to the outer surface of a preformed carbon fibre (with the appropriate Young's modulus), and thereafter thermally carbonizing the precursor to amorphous carbon at a temperature less than 1200‹ C. The precursor may be dissolved in a suitably volatile solvent. Examples are polyvinylidene chloride in hexamethylphosphoramide, polyacrylonitrile in dimethylformamide polyvinylchloride in methylethylketone, as well as asphalt, petroleum pitch and phenolic polyimide polybenzimidazol and cured epoxy resins. Composites are prepared from the fibres using epoxy (Examples I-X) and polyester (Examples XI and XII) resins.
Patent GB-1249138-A (GB)
Title: Photocomposing apparatus or the like
IPC: B41B21/16
Filed: 1968-11-18
Abstract: 1,249,138. Photographic type-composing. RCA CORPORATION. 18 Nov., 1968 [20 Dec., 1967], No. 54587/68. Heading B6W. [Also in Division G2] Apparatus for successively projecting images 46 along a line on a recording surface 30, e.g. in a photocomposing apparatus, comprises a matrix of holograms 36 having recorded graphic images which are mounted for movement in a direction parallel to the recording surface 30, and a collimated light beam which can be deflected along a selected one of a plurality of paths parallel to direction of motion of the matrix and thus to a selected one of the holograms of the matrix. The hologram matrix is mounted in a carriage 24 reciprocably movable along a track 28. Light from a laser 10 is directed into its desired path to its selected hologram by galvanometer mirrors 14, 18. If desired a further mirror 34 may be mounted in the carriage in controlled angular relation with the matrix 36. Alternatively the matrix may be illuminated direct. The holograms are so constructed that when any one is illuminated at a given position of the matrix over the record an image is formed on the record at that position. In photo-composing when all desired holograms have been illuminated to fill a desired line on record 30, the carriage 24 is returned to an initial position and the record 30 is moved transverse to the direction of movement of the matrix.
Patent GB-1123840-A (GB)
Title: Electro-optic apparatus
IPC: G11C13/04
Filed: 1966-12-07
Abstract: 1,123,840. Light modulators. INTERNATIONAL BUSINESS MACHINES CORP. 7 Dec., 1966 [3 Jan., 1966], No. 54705/66. Heading H4F. [Also in Division H1] Relates to electro-optic apparatus for controlling the direction of emission of laser light comprising a body of material exhibiting electro-optic and photoconductive effects on which a charge pattern is deposited to produce the electro-optic effect which alters the polarization of an incident polarized light beam, the charge pattern being erased by means of a source of light having a frequency within the range of frequencies which cause the body of material to become conductive. The frequency range of the incident polarized light is selected to be outside the range of frequencies capable of producing a photoconductive effect. The direction of emission of laser light from a ruby 10 is controlled by a cathode-ray tube 12, the face of which comprises a crystal 18 of material selected to exhibit the electro-optic effect at the location where the electron beam 14 strikes and thus cause laser emission along a particular mode of oscillation 16. To discharge the field set up across the crystal the material of the crystal is selected to exhibit a photoconductive effect in response to the light from lamp 20. The laser cavity is formed by a mirror 28 and a dielectric mirror coating 26 applied to the inner surface of crystal 18. A transparent coating 24 of stannous oxide provides a ground reference for the electron beam. In operation light in a plurality of angularly oriented modes of oscillation from ruby 10 is plane polarized 32 and passed via phase plate 34 to the crystal 18. Plate 34 introduces a relative phase delay between the two othogonal components of light and is oriented at 45 degrees with respect to polarizer 32. The phase delay introduced by plate 34 is selected so that the intensity of the light returning to laser 10 is insufficient to cause the laser to oscillate. To obtain laser emission, the phase delay introduced by plate 34 must be compensated for by an opposite phase delay introduced by crystal 18 due to the deposition of charge by electron beam 14 producing a field across the crystal. Laser emission along other modes of oscillation may be achieved by moving the position of electron beam 14. Crystal 18 may comprise ZnS, GaAs, GaP, SiC or ZnTe. When illuminated by lamp 20 the charge is conducted through to coating 24 or a battery 40 connected by an electrode 41 to the upper portion of the crystal and another electrode 43 connected to ground may be employed to drain off the charge when the crystal becomes conductive. The charge pattern may be erased by a pulse of illumination from lamp 20 and in addition the lamp may provide a constant illumination, battery 44 and resistor 46, to increase the inherent conductivity built into the crystal during manufacture.
Patent GB-1161570-A (GB)
Title: Device for the Application of a Regular Graphite Mark to a Surface
IPC: G03B17/26
Filed: 1966-12-07
Abstract: 1,161,570. Marking-out tools. AGFAGEVAERT A.G. 7 Dec., 1966 [10 Dec., 1965], No. 54806/66. Heading B4X. [Also in Division B6] A device for regularly applying a graphite mark to a surface includes electromagnetic means variously controllable to bring a marker wheel into contact with the surface by means of a spring, to increase the pressure of the marker wheel on the surface by further stressing the spring and to actuate means for making the mark on the surface. Fig. 2 illustrates a form of the invention in which a graphite marker wheel 11 applies a marking to a photographic layer support web 3. To the apparatus frame 1 of a printing machine for use with lightsensitive material is attached a bracket arm 4 on which the armature 6 of a rotary electromagnet 5 is held; the armature 6 is attached to a lever 7 which carries a bearing for a drive pawl 9. An arm 10 carrying a graphite wheel 11 is rotatably supported on the bracket arm 4; a ratchet wheel 13 is fixed to graphite wheel 11 on spindle 12 and co-operates with the pawl 9. A compression spring 15 is wound round a screw 14 attached to the arm 10 and bearing on a projection 7a on the lever 7. When the electromagnet 5 is energized by a switching circuit (Figs. 3, 4, not shown) pressure is exerted on spring 15 by lever 7 and the arm 10 pivots downwards against the force of weak hairpin spring 16 until the wheel 11 meets layer support 3; the magnet is then provided with further current, the spring 15 becomes further compressed, and wheel 11 exerts greater pressures at the same time, by means of pawl 9, the ratchet wheel 13 rotates the graphite wheel 11 to provide a sharp rectangular mark on the layer support 3. The magnet is then de-energized, and spring 16 returns arm 10 to its original position (Fig. 1, not shown). The electromagnet may be controlled by a switch circuit which includes a series resistor which can be bridged by a further switch to increase the current flowing through the magnet (Fig. 3, not shown), or the bridging can be carried out by an electrical trim circuit which is energized only when the wheel 11 impinges on surface 3 (Fig. 4, not shown).
Patent GB-1098820-A (GB)
Title: Improvements in or relating to composite yarns
IPC: D02G3/32
Filed: 1965-12-29
Abstract: An elastic composite yarn comprises a first synthetic multifilament yarn, the filaments of which have a denier greater than 6 and which has been crimped by twisting, heat setting, and untwisting the yarn-e.g. by false-twisting the yarn-, plied with a further synthetic multifilament yarn which has been similarly crimped.  Polyamide, polyester, or polypropylene yarns may be used.  In examples the first yarn is plied either with one or two yarns having filaments of a denier of between 2 and 3.5, or with a yarn having filaments greater than 6.  The thick-filament yarns and also possibly the thin-filament yarns may be covered-e.g. by wrapping or core-spinning-with staple fibres of wool, cotton, regenerated cellulose, or polyacrylonitrile. Ring-twisters-for example as in Specification 1,032,896-or uptwisters with or without hollow spindles can be used for the plying and covering steps.