baber/WOPTO huggingface dataset:
Patent GB-718032-A (GB)
Title: Improvements in or relating to the purification of oxytetracycline
IPC: C07C233/00
Filed: 1951-11-01
Abstract: A process of purifying oxytetracycline comprises treating an aqueous oxytetracycline solution (e.g. an oxytetracycline fermentation broth) in the presence of polyvalent metallic ions with an amine or quaternary ammonium salt containing at least 8 carbon atoms, which are preferably at least somewhat water-soluble, at a pH of at least 5.5 and recovering the resulting complex basic metallo-organic oxytetracycline salt precipitate.  The organic base precipitant is added to an acidified filtered broth, which is then adjusted to a pH of 6 to 10, and preferably 8.0-9.5, by the addition of a soluble alkali such as sodium or potassium hydroxide.  The complex oxytetracycline precipitate is dissolved in an alcohol or ketone containing 1 to 4 carbon atoms per molecule by the addition of acid to pH 2-2.5, or calcium chloride, and a crystalline hydrochloride formed by the addition of hydrochloric acid. Amphoteric oxytetracycline is obtained by adjusting the pH of the methanol solution to 5 to 7.  Excess metallic ions in the broth may be removed by the sequestration method of copending Application 718,027.  If insufficient ions are present in the broth, ions are added.  The organic precipitant is used in excess, p  preferably three-fold molar excess.  The organic precipitants are primary, secondary and tertiary amines and quaternary ammonium salts.  Specified are aliphatic amines of 8-18 C atoms, e.g. octylamine, nonylamine, decylamine and technical mixtures thereof; Alkyl (C=8-18) trimethyl ammonium chlorides, especially dodecyl trimethyl ammonium chloride in the form of its technical mixture "Arquad C" (Registered Trade Mark); a substituted stearyl imidazolinium chloride; alkylbenzyl trimethyl ammonium chloride; p-di-isobutyl phenoxyethoxy ethyl dimethyl benzyl ammonium chloride; cycloalkylamines and heterocyclic chloride; cycloalkylamines and heterocyclic compounds.  Specification 684,417 also is referred to.
Patent GB-411338-A (GB)
Title: Improvements in dark-field condensers for microscopes
IPC: G02B21/10
Filed: 1933-09-16
Abstract: 411,338. Microscopes. ZEISS, C., [Firm of], Carl-Zeiss-Strasse, Jena, Germany. Sept. 16, 1933, No. 25671. Convention date, Sept. 19, 1932. Addition to 378,344. [Class 97 (i).] In a dark-field condenser according to the parent Specification comprising a single reflecting surface of approximately ellipsoidal form, the reflecting body consists of a metal ring a and the support for the object is a transparent plate g lying against the ring. To the lower surface of the plate g is cemented a plano-convex lens m, the spherical convex surface n of which has its centre of curvature at the focus of the ellipsoidal reflecting surface b so that the reflected rays proceed to the focus without refraction. The portion of the surface n which is not traversed by the reflected rays is covered with a layer o of varnish to cut off the direct rays from the lamp f. The plate g is preferably in the form of a frustum of a cone to facilitate displacement or removal of the object carrier k when an immersion liquid is used.
Patent GB-691287-A (GB)
Title: Improvements in or relating to alumina
IPC: B01J21/16
Filed: 1951-11-02
Abstract: Aluminiferous material contaminated with soda, e.g. Gibbsite and synthetic aluminium hydrates of the same composition, and other hydrates of alumina and their dehydrated forms, are treated for the removal of soda by slurrying with water an an acidic material, e.g. nitric, hydrochloric or acetic acid, or aluminium chloride, nitrate, or acetate, or mixtures thereof, autoclaving the slurry, say at 350-600 DEG F, in the liquid phase until the alumina is substantially freed of soda, and separating the water soluble constituents.  The quantities of the constituents of the slurry may vary within wide limits.  The separated material may be repulped, preferably after washing with water at pH8, and filtered.  The product has a soda content of 0.05 per cent or less, and may be used as a filler, abrasive, polishing agent &c. or as a support for catalytic materials, particularly for hydroforming reactions.  Thus 0.5-50 per cent, reckoned on the final catalyst, of oxides, chromites, chromates, molybdates, vanadates and sulphides of the metals of Groups 5 to 8 of the periodic system, or 2-20 per cent molybdena or chromia may be deposited thereon.  Alumina - molybdena - magnesia, aluminamolybdena-zincoxide, and alumina-chromia magnesia catalysts are also referred to.  The catalysts may be pelleted with polyvinyl alcohol or graphite which may be later removed.
Patent GB-468731-A (GB)
Title: Plant package and watering same
IPC: B65D85/52
Filed: 1936-09-22
Abstract: 468,731. Treatment of, and receptacles for, growing plants; packages. GARDNER, C. E. Sept. 22, 1936, No. 25773. Convention date, March 4. [Class 6 (ii)] [Also in Group XVII] A plant package comprises one or more plants having their roots embedded in soil, peat, or the like, a dry collar around the stems of the plants, and a tube passing through the collar into the soil, the plants, soil, and tube being arranged within a pliable container which is placed within an outer bag deep enough to enclose the whole, or a considerable amount, of the stems of the plants, and the completed package being such that water can be injected through the tube into the soil. The dry collar is made by folding cypress wool, excelsior, or other packing material 13<1>, Fig. 2, into a sheet of wax paper 12<1> or other moisture-proof paper, to form a flat and flexible tubular body which is then wrapped closely around the plant stems, with the watering-tube 14<1> and a marker in place. The roots, the lower end of the tube 14<1>, and the soil or peat are rolled in moisture proof paper 15<1> to form an inner package, the bottom edge of the paper being folded up and rolled into the package to prevent escape of water. A printed tape 17<1> is passed round the inner package and a rip cord 18<1> provided for freeing the upper part for removal before planting the lower part in the ground. The outer container is made of box-board or other material 19<1> and extends below the inner package so that the finished article may stand upright. It may have directions &c. printed on it. The edges of the material 19<1> are secured by adhesive paper tape ; or string, rubber bands, &c. may be used. For bulbs &c. the dry collar is wound around a tube 241, Fig. 7, placed over the growing part of the bulb, the watering tube 251 being located towards the outside of the package, and the outside wrapper 19<1> being made high enough to allow for growth. Specification 468,725 is referred to.
Patent GB-1333467-A (GB)
Title: Acrylate or methacrylate polymer latex compositions
IPC: C08K5/053
Filed: 1971-04-19
Abstract: 1333467 Laminated fabrics B F GOODRICH CO 19 April 1971 [1 April 1970] 25817/71 Heading B5N [Also in Divisions C3 and B2] Wool and nylon or acetate fabrics are bonded together by coating the surfaces with a 40% solids latex containing a copolymer of ethyl acrylate / methyl methacrylate / acrylic acid (54/36/10), together with 30 parts of ethylene glycol and 25 parts of propylene glycol per 100 parts of copolymer, pressing the fabrics together and heating at 300‹ F. for 3 to 5 minutes.
Patent GB-322534-A (GB)
Title: Improvements in or relating to oil tanks for oil-immersed electrical apparatus such as transformers
IPC: H01F27/14
Filed: 1928-09-08
Abstract: 322,534. Hansell, J. B., and Associated Electrical Industries, Ltd. Sept. 8, 1928. Transformers. - Excessive increase in pressure of the gas above the oil in transformer, switch, and like tanks is avoided by providing material, such as coke, charcoal, or a liquid that will reversibly absorb or give off the gas under changes of pressure, the material being disposed in a sealed expansion space in or communicating with the tank. The material 7 may be disposed in a chamber 6 communicating either with a space above the oil level in the tank or with a space 8 formed by a partition 9 in a tank 2 that is completely filled with oil. In the latter case, where the gas does not come into contact with the copper parts of the apparatus, a gas such as ammonia may be used. Otherwise, inert gases such as carbon-dioxide or nitrogen are employed. Alternatively, a liquid may be provided in the chamber 6, the space between this liquid and the oil being filled with the vapour of the former. Provision may be made for cooling the material 7, the transformer cooling system being utilized for this purpose if desired.
Patent GB-802871-A (GB)
Title: Improvements in turbine rotors for gas or steam turbines
IPC: F01D11/00
Filed: 1955-09-12
Abstract: 802,871. Making turbines. HENSCHEL & SOHN G.m.b.H. Sept. 12, 1955 [Sept. 10, 1954], No. 26014/55. Class 83 (2). [Also in Group XXVI] In a bladed rotor for a steam or gas turbine, each blade 1 is formed with a straight root portion 2 of rectangular cross-section, and the rotor 3 is formed with projections 4 of corresponding cross-section, a blade root portion 2 being butt-welded on each projection 4. In Figs. 1 and 2 each blade is formed with a platform 6 between the aerofoil and root portions, the platforms of adjacent blades abutting to form the inner wall of the working fluid passage. The spaces 7 between adjacent blade roots 2 and projections 4 are closed by a ring 8 welded at 9 to the rotor ; rings such as 8 may be provided at both sides. Alternatively each blade platform 6 may be formed either at its upstream edge or at both its upstream and downstream edges with a plate-like projection at right-angles to the rotor axis, which projections close the spaces between the blade roots 2 and projections 4 on the rotor. In a third embodiment a continuous ring is formed integrally with the rotor on the upstream sides of the projections 4, the ring extending to the blade platforms 6 and closing the spaces between the blade roots 2 and projections 4; such rings may be provided both upstream and downstream of the projections 4. The axes of the projections 4 on the rotor may be disposed so that they are inclined to the axis of the rotor whereby they act as fan blades and cause cooling air to flow over the blade roots and rotor.
Patent GB-298360-A (GB)
Title: Improvements relating to gas scrubbers
IPC: B01D47/02
Filed: 1927-10-03
Abstract: 298,360. Spencer, S. E. Oct. 3, 1927. Scrubbers.-Lower gas scrubbers are filled with superposed layers comprising spaced battens or thick boards D with intervening separate bundles of scrubber boards E and each layer rests on the battens of the next lower layer. Annular flanges B are secured at intervals to the shell A of larger towers and carry main support battens C upon which a number of layers are mounted. The longest bundles of scrubber boards lying along the diameter of the tower may be divided into equal parts.
Patent GB-671027-A (GB)
Title: Improvements in and relating to thermostats
IPC: G05D23/275
Filed: 1950-10-25
Abstract: 671,027. Automatic temperature control systems. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 25, 1950 [Oct. 29, 1949], No. 26019/50. Class 38 (iv). In an automatic control system for maintaining the temperature in a space 14 between predetermined limits, a thermostat 17 responsive to space temperature comprises a bimetal strip 22 which carries at its upper end an armature 40 arranged to move. in the air gap between two C-shaped magnets 37 and 38, spaced apart with their poles in opposition, the planes of the two magnets being slightly displaced so that the armature may be moved from one position across the poles of one of the magnets to a second position across the other. Two windings 23, 24 are associated with the magnets, movement of the armature causing variation in the reactance of the windings which are connected in a normally balanced bridge circuit fed from a transformer 28 and feeding an electronic amplifier 32 or a magnetic amplifier, e.g. as described in Specification 592,766, [Group XXXVIII]. The output of the amplifier causes energization of a relay 18 in proportion to the degree of bridge unbalance (and consequently of temperature deviation from the predetermined value), the relay 18 positioning a valve 16 controlling a furnace 10 to alter the heating of the room in a corrective sense.
Patent GB-535894-A (GB)
Title: Improvements in or relating to the manufacture of artificial filaments, foils and other materials having a basis of organic derivatives of cellulose
IPC: D06M13/192
Filed: 1939-09-18
Abstract: 535,894. Cellulose esters ; treating artificial filaments &c. MONCRIEFF, R. W., and BATES, H. Sept. 18, 1939, No. 26057. [Class 2 (ii)] Artificial filaments, fabrics, foils, and similar materials made of an organic derivative of cellulose which is insoluble in organic solvents and which contains a substantial proportion of the radical of a mono-carboxylic acid, and a lower proportion of a polybasic acid radical, are subjected to partial saponification treatment. Products of high ironing temperature, high temperature of fusion, and high breaking strength are obtained. The polybasic acid radical may be that of adipic, phthalic, tartaric, citric, or succinic acid. The properties of cellulose acetate, aceto-propionate, acetobutyrate, propionate, butyrate, or other cellulose ester materials may be improved by esterifying them with retention of their structure by means of a dicarboxylic acid derivative containing at least two esterifying groups and then subjecting them to partial saponification. Introduction of the adipyl radical may be effected by means of adipyl chloride or a mixed anhydride of adipic and acetic acids. Preferably the conditions are such that all the acid radicals of the polybasic acid become attached to the cellulose nucleus. Esterification may be effected at temperatures above 100C. Saponification may be effected with an organic base, e.g. methylamine or ethylene diamine dissolved in water or an organic solvent, or an inorganic base such as dilute solution of caustic soda or potash containing sodium acetate or other buffer salt may be used. In an example, cellulose acetate fabric is heated with a mixed anhydride of adipic acid and acetic acid. The fabric so treated is washed with carbon tetrachloride, dried, boiled with water, and then subjected to partial saponification with a dilute solution of caustic soda containing sodium acetate. The fabric is washed, boiled with a very dilute solution of oxalic acid, washed, and dried. The fabric has a high safe-ironing temperature, good tenacity, affinity for both direct cotton dyes and waterinsoluble dyes, and it is insoluble in most organic solvents. Specifications 532,673 and 532,674 are referred to. The Provisional Specification refers also to the introduction of polybasic inorganic radicals, such as those of sulphuric, sulphurous, or carbonic acids, into materials made of an organic derivative of cellulose, and the subsequent saponification of these materials. Specifications 417,220 and 429,103 also are referred to.
Patent GB-376091-A (GB)
Title: Casting machine for the manufacture of stereotype plates
IPC: B41D3/00
Filed: 1931-09-17
Abstract: 376,091. Regulating exhaustion. MASCHINENFABRIK AUGSBURGNRNBERG AKT.-GES., 7, Stadtbachstrasse, Augsburg, Germany. Sept. 17, 1931, No. 26082. Convention date, Oct. 3, 1930. [Class 8 (i).] In a machine for casting stereotype plates the molten metal is raised from the melting pot 1 into a closed riser 6 by suction produced in an apparatus 9 acting through pipes 7, 8. A float 16 in the pot 1 regulates the pressure of a spring 20 acting on a valve 15 controlling an air port in the conduit 7, 8 whereby the degree of vacuum therein is controlled in accordance with the height of metal in the pot, and the head of metal in the riser is maintained constant.
Patent GB-1467989-A (GB)
Title: Overhead contact line for rail-cars
IPC: B60M1/22
Filed: 1974-06-12
Abstract: 1467989 Supporting overhead conductors CENTRALNE BIURO STUDIOW I PROJEKTOW BUDOWNICTWA KOLEJOWEGO 12 June 1974 [14 June 1973] 26108/74 Heading H2C Supporting cables for an overhead conductor for electrically propelled transport are joined together as a single cable for most of the distance between supports and separate into two near the supports. One (1) is fixed to a cantilever (2) on the support (6) while the other hangs in a loop. The conductor is hung from a lower cantilever (5, Fig. 2, not shown), on the support (6) and from the loop and joined cable by hangers (7).
Patent GB-953273-A (GB)
Title: Illuminated display or advertising casing
IPC: G09F11/26
Filed: 1962-07-06
Abstract: 953,273. Moving advertising apparatus. J. BRUN. July 6, 1962 [July 25, 1961], No. 26116/62. Heading G5C. An illuminated advertising apparatus comprises an'endless belt driven by an electric motor and guided by pulleys, the belt having spaced perforations into which the studs of letter carrying plates fit to move any desired caption in front of a viewing position. Fig. 1 shows a display device in which an article to be displayed is mounted on a rotating platform 11 which is driven by an endless nylon belt 24 from an electric motor 2. As shown in Fig. 2 the belt has perforations 25 into which may be placed letter carriers 26 which have cylindroconical securing studs 30, Fig. 4, into slots 27 of which are placed plastic members 31 which are either opaque except for a letter defining symbol or have perforations 32 in them which define the letter or symbol. The belt moves in front of a discharge lamp 22, backed by reflector 23 so that the desired caption may be viewed from in front of the display device.. Coloured transparent screens may be provided between the lamp and viewer. The tension in the web may be adjusted by means of a spring-loaded pulley 13 having the spindle bearing eccentrically on a plate 17.
Patent GB-854124-A (GB)
Title: Improvements in steamers
IPC: A47J27/04
Filed: 1956-08-27
Abstract: 854,124. Kitchen utensils. BRIERLEY, C. July 30, 1957 [Aug. 27, 1956], No. 26146/56. Class 66. A steamer for extracting juice or other liquids comprises a base pan A, an upper pan C fitting on the base pan and having an upward pro. jection F in its base apertured at G. a perforated receptacle D having a corresponding projection H in its base, a lid E, and a valved outlet adjacent to the base of the upper pan. An outlet pipe J from the upper pan C is joined to a rubber tube K, fitted for observation purposes with a glass tube N, the pipe J being opened or closed by a spring clamp member L.
Patent GB-1383184-A (GB)
Title: Polyisocyanates containing suphonic acid and or sulphonate groups
IPC: C07C309/45
Filed: 1973-06-01
Abstract: 1383184 Polyisocyanates containing sulphonic acid and/or sulphonate groups BAYER AG 1 June 1973 [3 June 1972] 26221/73 Heading C2C Liquid aromatic polyisocyanates which contain sulphonic acid and/or sulphonate groups are prepared by reacting a liquid multicomponent mixture of aromatic polyisocyanates with sulphur trioxide, oleum, sulphuric acid or chlorosulphonic acid and optionally completely or partly neutralizing the sulphonation product with a basic compound.
Patent GB-865748-A (GB)
Title: Metallisable tetrakisazo dyestuffs
IPC: C09B33/26
Filed: 1959-07-30
Abstract: The invention comprises tetrakisazo dyes of formula:- <FORM:0865748/IV(c)/1> wherein R is hydrogen or a methyl group, R1 is hydrogen or a sulphonic acid group, R2 is a methoxy or carboxylic acid group, R3 is hydrogen or a methyl or methoxy group, and R4 is hydrogen or a methyl group, with the proviso that R2 is a methoxy group when R1 is a sulphonic acid group; and the copper complexes thereof.  They are prepared by coupling a diazotized 7-aminobenztriazole, which may contain a methyl group in the benzene nucleus, in an acid medium with 2-amino-5-naphthol-7-sulphonic acid and coupling the monoazo compound so obtained in alkaline medium with the diazo compound of an aminodisazo dye of formula:- <FORM:0865748/IV(c)/2> The tetrakisazo dyes may be coppered in substance or on the fibre.  They give black shades on cellulose fibres.  In Examples: (1) the aminodisazo dye 4-amino-41-hydroxy-31-carboxybenzeneazo-(1 : 11)-benzene-2-sulphonic acid --> 3-amino-4-methoxy-1-methylbenzene is prepared and then is diazotized and coupled in the presence of pyridine with 7-aminobenzriazole --> 2-amino-5-naphthol-7-sulphonic acid and alternative reactants specified are 4-amino-41-hydroxy-31-carboxy-51- or -61-methyl-azo-(1 : 11)-benzene-2-sulphonic acid, 2-amino-1 : 4-dimethoxybenzene and 7-amino-4-methyl-benztriazole; (2) the disazo dye 4-amino-3-carboxybenzene-azo-(1 : 41)-benzene-azo-(11 : 111)-41-hydroxybenzene-311-carboxylic acid, obtainable by the condensation of 4-nitro-41-hydroxyazobenzene-31-carboxylic acid with 2 : 5-diaminobenzoic acid, is diazotized and coupled with 7-aminobenztriazole --> 2-amino-5-naphthol-7-sulphonic acid. Specification 451,673 is referred to.
Patent GB-894040-A (GB)
Title: Salts of kanamycin and therapeutic compositions containing the same
Filed: 1959-07-30
Abstract: Kanamycin salts, which give prolonged therapeutically useful blood levels and/or urine levels of the antibiotic, are obtained by reacting kanamycin base or a salt thereof with riboflavin-51-phosphoric acid or one or more bile acids. The kanamycin may be kanamycin A or B or a mixture thereof.  The bile acids may be a single bile acid, e.g. glycocholic acid, taurocholic acid, cholic acid, dehydrocholic acid, desoxycholic acid, cholanic acid, dehydrodesoxycholic acid, lithocholic acid, chenodesoxycholic acid and dehydrodesoxycholic acid, or a mixture thereof, particularly the mixture present in ox bile extract. Certain salts are put up in therapeutic compositions (see Group VI).ALSO:An aqueous injectable therapeutic composition comprises 50 to 300 mgm. karamycin riboflavin-51-phosphate (see Group IV (b)) per ml. of injection and at least one pharmaceutically-acceptable suspending agent, e.g. a mixture of sorbitan monopalmitate and a polyoxyalkylene derivative thereof. A similar karamycin composition giving prolonged blood levels and/or urine levels of karamycin is obtained by mixing karamycin desoxycholate (see Group IV (b)) with a diluent for oral use.
Patent GB-1153713-A (GB)
Title: Novel 1-(2-Cycloalkylidene-Ethyl)-4-Phenyl-Piperidines and process for the manufacture thereof
IPC: C07D211/64
Filed: 1966-06-13
Abstract: 1,153,713. Analgesics. BOBHRINGER INGELHEIM G.m.b.H. 13 June, 1966 [16 June, 1965], No. 26301/66. Heading A5B. [Also in Division C2] 1-(2-cycloalkylidene-ethyl)- 4 - phenyl - piperidines of the general formula wherein R 1  represents a m- or p-hydroxy or a m- or p-methoxy group, R 2  represents a methyl, ethyl, propyl, methoxy, ethoxy or propoxy group, R 3  represents a hydrogen atom or a methyl group and n represents 1, 2, 3 or 4, and non-toxic acid addition salts thereof, having marked analgesic activity, may be used as non-habit-forming analgesics or as additives to habit-forming analgesics, such as morphine, pethidine and ketobemidone and/or a pharmaceutical carrier, the compositions being presented in a form suitable for oral, rectal, parental or topical administration.
Patent GB-287799-A (GB)
Title: Improvements in the manufacture of pavements
IPC: C08L95/00
Filed: 1927-10-05
Abstract: 287,799. Haddan, R., (West Process Pavement Co., Inc.). Oct. 5, 1927. Compositions containing bituminous and siliceous, calcareous, and like materials. -An asphaltic paving composition which will not set into a coherent mass during storage or transit but requires to be heated and blended before laying, is prepared by heating a mixture of mineral aggregate and a powdered hard asphalt to a temperature below that at which the hard asphalt can blend with a soft or semi-liquid asphalt or asphaltic flux, the latter being separately heated to a tamperaure below that at which it will blend with the hard asphalt and then mixed with the former composition. The quantity of soft asphalt added is just sufficient to give the required total proportions of asphalt to aggregate in the final road material. As an example, 60 lbs. of powdered Gilsonite and 1800 lbs. of sand and filler are heated, and 140 lbs. of flux is added, The hard asphalt may be natural or artificial, such as refinery asphalt-residuals which may be sulphonated.