baber/WOPTO huggingface dataset:
Patent GB-876020-A (GB)
Title: Prepayment gas meter
Inventor: ALEXANDER ARTHUR
IPC: G07F15/00
Filed: 1957-02-25
Abstract: 876,020. Coin-freed gas meters. PARKINSON COWAN Ltd. Feb. 24,1958 [Feb. 25, 1957], No. 6289/57. Class 27 A prepayment gas meter has a coaxial inlet and outlet member 26, 28, as described in Specification 876,018, of which either the inlet or outlet is connected to one side of a prepayment shut-off valve 44 housed in a gas-tight valve box 34 within the meter casing and the other side of the prepayment valve is connected to a conduit or chamber 22 in communication with the distributing valve or valves 40. The meter shown has a gastight partition 10 extending across the casing and two pairs of enclosed diaphragm pans served by distributing valves 40 are secured to the underside of the partition. The valve box 34 is mounted on the partition 10 and is connected by a short pipe 32 to the inner coaxial member 26 and by a short pipe 38 to the chamber 22 below the valves. The shut-off valve 44 may seat either on the pipe 38 or 32 and is carried by a shaft having a lever 51 engaging the shut-off cam 54, which is connected to the measuring-out gearing and to the coin mechanism.
Patent GB-555268-A (GB)
Title: Improvements in and relating to heat-responsive elements
IPC: G08B17/06
Filed: 1941-05-16
Abstract: 555,268. Fire-detecting elements of linear superpolyamides. SPECIALTIES DEVELOPMENT CORPORATION. May 16, 1941, No. 6346. Convention date, May 22, 1940. [Class 2 (iii)] [Also in Groups XXI and XXXVII] In a fire safeguarding system, the heat-responsive firedetecting element is composed of a synthetic linear superpolyamide adopted to fail structurally when a temperature of 400 ‹F. is exceeded. In Fig. 1, 1 is a strand or filament of the superpolyamide, and when this breaks at 400‹F. or over, the weight 3 actuates the lever 6 which may, for example, close an electric alarm circuit, or may release a larger or remotely operating force for the liberation of a fire extinguishing medium, the closing of doors and other fire safeguarding operations. In Fig. 2, failure of the strand 6 releases the spring- pressed contact ring 5 and bridges the elements 3, 4, thus completing an electric circuit. Fig. 3 shows a fire alarm apparatus wherein circuit closers, in accordance with Fig. 2, are placed at 5. Specifications 461,236 and 461,237 are referred to.
Patent GB-812605-A (GB)
Title: Improvements relating to curve followers
Inventor: JAWOR TADEUSZ BRONISLAW
IPC: G06K11/02
Filed: 1956-02-29
Abstract: 812,605. Electric analogue calculating systems. EVERSHED & VIGNOLES Ltd. May 3, 1957 (Feb. 29, 1956], No. 6351/56. Class 37. [Also in Group XXXVIII] Means for obtaining a current proportional to AB/C where A, B and C are represented by currents, comprises a beam 60 pivoted at its mid point 61 and carrying a coil 62, 63 at each end, co-operating with magnets 64, 65 respectively. The currents A, B and C are fed to coil 62 and the energizing coils 66, 67 of magnets 64, 65 respectively, and coil 63 is supplied with the anode current of a valve 70 whose grid bias is maintained by follow-up switch 73 at the correct value to obtain balance of the beam 60. The current X in coil 63 is then proportional to AB/C. Specification 704,885, [Group XXXVIII], is referred to.
Patent GB-728654-A (GB)
Title: The manufacture of ª‰-(p-nitro-phenyl)-serine alkyl esters and novel esters obtained thereby
IPC: C07C227/16
Filed: 1951-03-16
Abstract: The invention comprises (a) L-threo-b -p-nitrophenylserine alkyl esters; (b) the manufacture thereof by hydrolysing L-threo-2-alkyl-4-carbalkoxy - 5 - (41 - nitrophenyl) - oxazolines (obtainable by nitration of L-threo-2-alkyl-4-carbalkoxy - 5 - phenyloxazolines according to Specification 728,704) with a mineral acid and treating the resulting mineral acid salt with an alkaline agent; and (c) the manufacture of b -p-nitrophenylserine alkyl esters in general by esterifying the carboxyl group of b -phenylserine, acylating the hydroxy and amino groups, nitrating the diacylated b -phenylserine ester, deacylating the nitro compound by hydrolysis, and, if necessary, re-esterifying the product with an aliphatic alcohol. In examples, (1) L-(-)-threo-b -phenylserine ethyl ester hydrochloride is heated with acetic anhydride and pyridine, the diacetyl derivative formed is treated with fuming nitric acid in the cold, the nitrated product is hydrolysed with dilute hydrochloric acid, and the resulting L-threo-b -p-nitrophenylserine is esterified with alcoholic hydrochloric acid; (2) DL-threo-b -phenylserine ethyl ester is similarly converted to its p-nitro derivative (isolated as hydrochloride); (3) L - (+) - threo - 2 - methyl-4- carbethoxy - 5 - (41 - nitrophenyl) - oxazoline is hydrolysed with aqueous alcoholic hydrochloric acid, and the product is dissolved in chloroform and gaseous ammonia is passed in to liberate L-(+)-threo-b -p-nitrophenylserine ethyl ester.  Specifications 728,705 and 728,706 also are referred to.  L - (+) - Threo - 2 - alkyl - 4 - carbalkoxy - 5-phenyloxazolines are obtainable from L-(-)-threo-b -phenylserine by the method described for the corresponding DL-threo compounds in Specification 681,130.
Patent GB-267521-A (GB)
Title: Improved apparatus for balancing pressures in pneumatic tyres of vehicle wheels
IPC: F22B21/00
Filed: 1927-03-08
Abstract: 267,521. Houdaille, M. March 10. 1926, [Convention date]. Means for equalizing pressure in tyres on both sides of vehicle.-The tyres on opposite sides of a vehicle are put into communication, either during or after inflation, by a pipe A connected to screw-caps C, D adapted for attachment to the valve-stems, the pins H, H' of which are actuated to place the tyres in communication by means of threaded plugs G, G<1>. The pipe A may be fitted with a branch B provided with an inflating-valve E and a pressure-gauge F.
Patent GB-702903-A (GB)
Title: Photographic process for making coloured prints, especially multi-coloured paper prints
IPC: G03C7/26
Filed: 1950-03-15
Abstract: 702,903. Coloured photographic prints. MAYER, A., and BUCKHEIM, E. SCHOENBORN-. March 15, 1950 [March 15, 1949], No. 6529/50. Class 98(2) A relief image is formed in an exposed unhardened silver halide emulsion layer on a support such as paper, either by treatment with a tanning developer or with an ordinary developer followed with a hardening bleaching agent and re-development, the layer is transferred to an intermediate support, the original support is removed, the soluble halide emulsion is washed out with warm water and the silver retained in the relief image is converted to a dye substance by a toning process or by converting the silver into a mordant and dyeing the rrordant, and the image or a plurality of such register are transferred onto a permanent base such as paper. In an example a paper support having a bottom layer of easily soluble gelatin and above this a layer of silver halide gelatin emulsion is exposed, developed with catechol or else developed with a non-hardening developer, bleached with a specified hardening bleaching agent and redeveloped; treated in an acid bath and squeezed face down on to a waxed celluloid foil, the paper support is removed with warm water, the image is washed in warm water, fixed if it has the desired intensity or intensified by uniform exposure and re-development, or, alternatively the image may be reduced in intensity as by Farmer's reducer or ammonium persulphate. The image is then toned, in the case of the yellow component of a three-colour image to lead chromate or copper xanthogenate the red component to nickel dimethyl glyoxim and the blue to Prussian or Turnbull's blue; or the image may be converted to a copper thiocyanate mordant and dyed as with auramine, fuchsine or methylene blue respectively for the three colours. The toned or dyed images may be intensified or altered as to graduation or hue by incorporation of metal salt solutions and subsequently treating them with precipitate forming solutions.
Patent GB-1442253-A (GB)
Title: Method of decorating pile fabrics and fabrics produced thereby
IPC: D06B11/00
Filed: 1974-02-13
Abstract: 1442253 Patterning fabrics GIRMESWERKE AG 13 Feb 1974 [29 May 1973 30 June 1973] 6612/74 Headings D1P and D1S A fabric having a pile containing synthetic. or cellulose filaments or fibres, which are glossy or mat, is patterned by printing the hue, tone or shade of the desired pattern onto the pile surface by a tinted printing paste; printing a relief pattern, having a figurative relationship to the pattern previously printed, onto the pile surface using a paste containing a minimum proportion of 60 grams per kilogram of an agent which shrinks or carbonises the filaments or fibres and is not, or only sparingly, volatile during subsequent steaming; and steaming the twice printed fabric. Preferably, the minimum proportion of the shrinking or carbonising agent is 100 grams per kilogram of printing paste. The printing steps are carried out on a roller printing, a rotational template printing or a flat film printing machine. The fibre-shrinking agent may be applied in a printing paste which contains additionally dyestuffs and further additives necessary for the transferring of the dyestuffs, e.g. acetic acid and ammonium sulphate. The relief pattern printed by the paste containing the shrinking or carbonising agent may correspond to the pattern of a sheet of skin made by stitching together a number of small skins. Di-beta-cyanethyl formamide may be used for the swelling and shrinking agent when treating a pile of polyacrylic, modacrylic or poly-as.-dicyanethylene fibres or a mixture thereof. Other specified agents are O-phenylphenol, diphenyl ether, methyl dichlorphenoxy acetate and N-butyl phalimide. Aluminium sulphate, aluminium chloride and benzene sulphonic acid are specified carbonising agents for a pile consisting of cellulose filaments or fibres, e.g. a viscose rayon pile formed on a cotton-polyester-mixed yarn base fabric.
Patent GB-1365072-A (GB)
Title: Rubber vulcanisation assistants
IPC: C08K5/5398
Filed: 1972-03-30
Abstract: 1365072 Dithiophosphoric acid esters IMPERIAL CHEMICAL INDUSTRIES Ltd 30 March 1972 [12 March 1971] 6672/71 Heading C2P [Also in Division C3] Compounds of Formula I: in which R 1  and R 2  represent alkyl, cycloalkyl, aralkyl or aryl groups, any of which may carry non-reactive substituents, X represents a carbonyl group and R 3  and R 4  individually may represent alkyl, cycloalkyl, aralkyl or aryl groups and taken together may represent an alkylene or arylene group, any of which groups may carry non-reactive substituents, may be obtained by reacting a salt of an acid of formula with an N-halo imide of formula in an organic solvent.
Patent GB-178659-A (GB)
Title: Improvements in expansible chain of the kind used as bracelets
IPC: A44C5/08
Filed: 1921-03-01
Abstract: 178,659. Hyde, H. E., and Eccleston, R. H. March 1, 1921. Bracelets.- The springs x, y, in the middle link a of an expanding bracket are arranged side by side either in a space above or below the side slots e, f, each spring lying 'between one end of the link a and the end n<2> of a channel-shaped slide n formed with a tube-like part n<3> to pivot on a pin l<2> passing through the side slots e, f, and soldered or riveted to plate-like outer links l, m. The links a are made in two parts soldered together, and the compartments h, i, housing the springs, are separated by a wall g, each compartment being partly closed at the bottom by the turned-in portion j. The ends of the wall g are inturned at g<2> to form spikes 'to engage the springs. In assembling, the springs may be inserted through the slots e, f, after all the other parts have been soldered together.
Patent GB-1535482-A (GB)
Title: Video signal recording and/or reproducing apparatus
IPC: G11B20/02
Filed: 1977-02-17
Abstract: 1535482 Video recording systems SONY CORP 17 Feb 1977 [1 March 1976] 06746/77 Heading H4F The system records and reproduces video signals in successive parallel tracks on a magnetic tape. There is no guard band between the tracks, and in order to reduce cross-talk the luminance signal is frequency modulated on a first carrier when one track is recorded and on a second carrier when the adjacent tracks are recorded. The carriers are selected to be in frequency interleaved relationship, and preferably differ by (m + ¢)f H , where m is is integral and f H  is the horizontal sync. frequency. The change from the first to the second carrier and vice versa is achieved by changing a bias value which is added to the luminance signal. Timing marks are recorded along the tape to identify alternate tracks, and are used on reproduction to ensure correct phasing of the record/playback heads. The heads have different azimuth angles to reduce cross-talk further. The chrominance signal is down-converted, before being added to the frequency modulated luminance signal, so that it lies in a frequency band lower than that of the frequency modulated luminance signal. The carrier frequency of the converted chrominance signal is preferably 1/4f H  (2m - 1). The phase of the carrier is constant during every other track and is inverted at line frequency during intervening tracks, effectively ensuring that the chrominance carriers in adjacent tracks are of different frequency and in interleaved relationship.
Patent GB-1168021-A (GB)
Title: Water-Soluble, antibiotic Derivatives of Chloramphenicol and Analogous Compounds, and Intermediates thereof
IPC: C07F9/09
Filed: 1968-02-12
Abstract: 1,168,021. Phosphate derivatives of 1-pphenyl - 2 - substituted propane - 1,3 - diol. ROUSSEL-UCLAF. 12 Feb., 1968 [20 Feb., 1967; 18 May, 1967], No. 6760/68. Heading C2C. The invention comprises (a) phosphates of the general formula in which X is NO 2 -, CH 3 CO- or CH 3 SO 2 -, and pharmacologically-acceptable salts thereof, e.g. with amino-acids such as alanine or glycocoll or metals such as Li, Na and K; (b) a dibenzyl phosphate of general formula in which Z is NO 2 -, CH 3 CO- or CH 3 S-; (c) a phosphate of general formula where Z is as above; and (d) a salt of general formula where Z is as above and R is an alkaline-earth metal. The dibenzylphosphates of Formula (III) are prepared by reacting the appropriate D - threo - 1 - p - phenyl - 2 - dichloracetamidopropane - 1,3 - diol with dibenzylchlorophosphonate in the presence of a tertiary base. By subjecting these compounds to acid hydrolysis with, e.g. a mineral acid such as HCl or H 2 SO 4 , the phosphates of Formula (IV) are prepared. These phosphates may be salified with a tertiary base, e.g. a trialkylamine, and the product reacted with an alkyl dichloroacetate (e.g. methyl or ethyl dichloroacetate) and a watersoluble salt of an alkaline-earth metal to give a salt of Formula (V). These salts may be reacted with an appropriate acid to form an 0-3 monophosphate of D - threo - 1 - p - phenyl - 2- dichloroacetamidopropane-1,3-diol. When Z is NO 2 - or CH 3 CO- these phosphates are the compounds of Formula (I) in which X is NO 2 - or CH 3 CO-. The phosphate of Formula (I) in which X is CH 3 SO 2 - is prepared by oxidation (e.g. with a per-acid) of the corresponding methylthio substituted phosphate prepared as above. In a modification of the general process, pharmacologically-acceptable salts of the phosphates of Formula (I) are prepared by first reacting a tertiary base salt of the latter with an alkyl dichloroacetate and then reacting the product with an appropriate organic base or alkaline reagent. The phosphates have antibiotic properties and a pharmaceutical composition for use in human or veterinary medicine comprises one or more of the phosphites of Formula (I) or pharmacologically-acceptable salts thereof and a carrier. The composition can be administered orally, transcutanouesly, topically or rectally.
Patent GB-504588-A (GB)
Title: Improvements in or relating to methods of and apparatus for treating readily oxidizable molten metal to produce a continuous solid strip therefrom
IPC: B22D11/06
Filed: 1938-03-04
Abstract: 504,588. Refining metals. STEELE, H., and GOSS, W. M. March 4, 1938, No. 6807. Convention date, April 10, 1937. [Class 82 (i)] [Also in Group XXII] In a machine for the production of strip copper, aluminium, lead, zinc, nickel, tin, steel, &c. or alloys thereof by rolling direct from molten metal a constant stream of the pure metal or alloy is supplied by a tilting furnace 23 heated by arcs or electric induction units 24, which also circulate the metal. A layer of pure carbon C is maintained on or below the surface of the molten metal, or the furnace is filled with carbon-monoxide containing little carbon-dioxide and no water vapour, or both carbon and reducing gas are used.
Patent GB-799826-A (GB)
Title: Improvements in and relating to a process for the purification of sewage
IPC: C02F3/04
Filed: 1955-03-08
Abstract: 799,826. Treating sewage and waste effluents. EASTERN GAS BOARD, and WEDGWOOD, P. April 23, 1956 [March 8, 1955], No. 6857/55. Class 111. [Also in Group XII] Sewage is fed to a tank 6, Fig. 1, at 16 and pumped thence to a tank 11 whence it flows down an open tower 1, provided with bacterially-activated surfaces 17a, Fig. 3, back into the tank. Some of the liquid overflows from tank 6 to a second tank 7, whence it is pumped to a tank 12 for flow down a second open tower 2 back into tank 7. Three further successive sets of tanks and open towers are provided, the total number depending upon the degree of purification desired. Selected strains of bacteria may be introduced into one or more of the towers. Humus sludge settling in the lower tanks (preferably of inverted conical shape) is removed by hydrostatic head. Reagents may be added (e.g., ammonium phosphate when phenols are present). The #H value in any tower may be controlled by addition of acid or alkali. The towers may be illuminated. They may be heated, e.g. by methane from digestion of the sludge. Clean water may be added at 30 to compensate for water lost by evaporation. The towers have a skeleton framework to admit daylight and the slats 17a may be replaced by spaced columns of horizontal bars, each bar having a flat top with a central longitudinal trough and having a triangular cross-section so that liquid drips from the lower edge into the trough of the bar beneath.
Patent GB-180094-A (GB)
Title: Improvements in apparatus for measuring drift angles on aircraft
Filed: 1921-03-02
Abstract: 180,094. Capon, R. S. March 2, 1921. Angle-measuring instruments.-For measuring the angle of drift of an aircraft, sighting-means are mounted on the craft to define a sighting- line directed forwards and downwards and the leading or trailing edge of the lower main plane or other laterally-projecting member is so graduated that the position at which an object on the ground on the sighting-line is subsequently observed to cross the graduated edge indicates the drift angle. The graduations d on the plane &c. are plotted from observation of a protractor e on the ground when the craft rests on the ground with its fore- and-aft axis parallel to the zero line of the protractor, and with the'sighting line c directed to the centre of the protractor. In plotting such graduations an allowance is made in the case in which the eye position for sighting an object ahead is different from the position for observing the object cross the graduated edge. The positions on the edge corresponding to these eye positions being A and B respectively and the ratio height of edge above ground-height of eye above edge being p, the correct position C for the graduation is such that p BC = AB, B lying between A and C. The ground-speed may be calculated from the drift angle as described in Specification 178,273, [Class 106 (i) Calculating &c.].
Patent GB-793739-A (GB)
Title: Improved catalase composition and method of employing same
IPC: C01B13/02
Filed: 1956-03-05
Abstract: A catalase composition comprises a waterinsoluble complex having a catalase component and a cellulose component that contains chemically bonded anion exchange groups.  The complex is characterized analytically by hydrolysing hydrogen peroxide to evolve oxygen gas. The cellulose component is preferably an a -cellulose material such as cotton, wood pulp, paper or cotton cloth and contains chemically bonded groups that will enter into an exchange reaction with anionic groups of other compounds. Examples of such anionic cellulose exchangers are dimethyl aminoethyl cellulose and diethylaminoethyl cellulose, and these may be prepared by respectively reacting sodium cellulose with a 2-dichlorodimethyl ethyl amine, e.g. 2 - (N,N - dimethyl) aminoethyl chloride hydrochloride, or with a 2-chloro triethylamine, e.g. 2-(N,N-diethyl) aminoethyl chloride hydrochloride.  Any catalase concentrate may be used for forming the complex which may then be used to generate oxygen by reaction with a peroxide, or to generate oxygen and water by reaction with hydrogen peroxide.  In such reactions the process may be carried out in a batch or columnar fashion and in the latter a semi-continuous process for the production of oxygen may be effected by passing a peroxide through the column and when the catalase activity is expended, eluting the spent catalase in a soluble form by means of solutions of sodium chloride or sodium phosphate and passing a fresh catalase concentrate through the column causing the catalase to be absorbed on the cellulose material.  The concentration of peroxide substance in contact with the catalase complex should be such that the catalase activity is not impaired.  If hydrogen peroxide is used, a suitable concentration is about 3 per cent by volume.ALSO:A process for the production of oxygen gas comprises the step of contacting a peroxide substance with a complex formed from catalase and a cellulose material containing chemically bound aminic exchange groups, e.g. dimethyl aminoethyl cellulose or diethyl amino ethyl cellulose.  The process may be carried out in a batch manner or semi-continuously using a column technique.  If the peroxide used is hydrogen peroxide, oxygen gas may be withdrawn from the top of the column and water from the bottom. When the catalase activity is expended the column may be recharged by eluting the spent catalase with sodium chloride solution or sodium phosphate solution and a fresh catalase concentrate run through the column causing the catalase to be absorbed on the cellulose material.ALSO:Dimethylaminoethyl cellulose and diethylaminoethyl cellulose are prepared by reacting the sodium salt of an a -cellulose material, e.g. cotton, wood pulp, paper or cotton cloth, with 2-chlorodimethylethyl amine or 2-chlorotriethyl amine respectively.  The products may be used as anionic exchangers but according to the Specification, are used in the form of a complex with cabalase, which complex will react with a peroxide substance to generate oxygen.