baber/WOPTO huggingface dataset:
Patent GB-770063-A (GB)
Title: New compounds for the combating of weeds
IPC: A01N39/00
Filed: 1954-09-20
Abstract: Thio carboxylic acids of the general formula (ArO(CnH2n)COSH in which n = 1-9 and Ar is a naphthyl or phenyl group or residue having one or more substituents selected from alkyl groups having not more than 4 C atoms, the halogens and the nitro group, or the salts and esters of such compounds are prepared by reacting the corresponding acid chloride with an alkali metal hydrogen sulphide.  Specified acids include 4-chloro-2-methyl-phenoxy thioacetic; 2,4 - dichlorophenoxy thioacetic; 2,4,5 - trichloro - phenoxy thioacetic; 2,4-dichloro - phenoxy - 2 - thio - propionic and 2,4 - dichloro - phenoxy - 4 - thiobutyric.ALSO:A weed combating agent contains a thioacid of the general formula Ar O(CH2)n COSH, which may be in the form of a salt or an ester, in which n is an integer from 1 to 9 and Ar is a naphthyl or phenyl group or naphthyl or phenyl residue having one or more substituents selected from ethyl groups having not more than 4 C atoms the halogens and the nitro group and salts and esters of such compounds.  Emulsifying, wetting, diluting or dissolving agents may also be included.
Patent GB-879340-A (GB)
Title: Stabilising means for transportable apparatus such as mobile cranes
Filed: 1959-08-07
Abstract: 879,340. Stabilizing mobile cranes; balancing loads. DEMAG-ZUG G.m.b.H. Aug. 7, 1959 [Aug. 21, 1958], No. 27168/59. Classes 78 (2) and 78 (4). A platform 1 which supports a portable crane on an axle 2 to which the platform is pivoted at 3, is stabilized by hydraulic pistons and cylinders 4a, 4b, 7a and 7b. Chambers 4a, 4b are interconnected by a pipe 5 which is interrupted by a slide valve 6. Chambers 7a, 7b are interconnected by pipes 9, 10. The slide valve 6 is held in its mid position by springs. A connecting rod of the slide valve is connected to a lever 11 pivoted at 12 which acts on a further slide valve 14 through a rod 13. Yet another slide valve 16 is displaced by means of a magnet 19 which receives current through contacts 20, 21 when the slide valve 6 is moved from its mid position. If the platform 1 is overloaded in the direction A, fluid is forced out of the cylinder 4a and displaces the slide valve 6 to the right. Thus, through the two-armed lever 11 and the rod 13, the slide valve 14, and by a magnet 19, the slide valves 16 are simultaneously displaced, so that pressure fluid is passed through pipe 10 to the chamber located under the piston of cylinder 7a. In this way a counter pressure develops by means of which the platform 1 is levelled. Simultaneously, pressure fluid acts from above upon the piston of the cylinder 7b, and thus contributes to the stabilization. Measuring devices 24, 25 are connected to the pipes 5a, 5b. Membranes in these devices hold spring-loaded rods in a position which leaves switches 26. 27 open. When the platform 1 is overloaded and the pressure on the measuring device on the side opposite to the load is caused to fall below a certain value, the circuit is closed by switch 26 or 27 which actuates a further switch 28 which locks the hoisting movement and/or the luffing mechanism of the jib. The platform may be set horizontal before work begins by a control slide valve 23 operated by a hand-lever 22.
Patent GB-718580-A (GB)
Title: Process for preparing aromatic n-acylated hydroxy-amino compounds
Filed: 1952-10-29
Abstract: Compounds of the formula <FORM:0718580/IV (b)/1> wherein R1 and R2 are the same or different and represent hydrogen, halogen, alkyl or alkoxy radicals with up to 8 carbon atoms, Y is hydrogen or a nitro group, X is carboxyl or a carboalkoxy group or may represent a hydroxymethyl group and Ac stands for lower aliphatic acyl, halogen-substituted lower aliphatic acyl (the term lower aliphatic acyl meaning acyl groups the alkyl residue of which has up to 8 carbon atoms) and benzoyl radicals, are prepared by reacting at a temperature between 70 DEG  and 120 DEG  C. a compound of the formula <FORM:0718580/IV (b)/2> with an acylamide of the formula Ac-NH2 until no more ammonia is formed, and isolating the N-acylated product from the reaction mixture.  The reaction is carried out by melting together the two starting compounds without any solvent or by heating the two reactants together in a suitable anhydrous organic solvent such as an aliphatic alcohol containing 2-4 carbon atoms in the molecule (e.g. absolute ethyl alcohol or anhydrous butyl alcohol). The product may be isolated from the reaction mixture by known methods, e.g. by extraction with an organic solvent immiscible with water or by fractional crystallization from a suitable solvent. Suitable starting materials are (-) - threo - 1 - para - nitrophenyl - 2 - amino - 1,3 - propandiol, esters of phenylserine, racemic threo-phenylserine and the ethyl ester of racemic threo-phenylserine. A suitable acylating agent is dichloroacetamide.  The examples describe the preparation of racemic and (-)-threo-1-para-nitrophenyl-2-dichloroacetamino - 1,3 - propandiol, racemic threo - N - dichloroacetylphenylserine ethyl ester, racemic erythro - 1 - para - methoxyphenyl - 2 - propion - amino - 1,3 - propandiol, racemic threo - 1 - phenyl - 2 - benzamido - 1,3 - propandiol and racemic threo-N-acetyl-phenylserine.  Specification 652,273 is referred to.
Patent GB-744235-A (GB)
Title: Improvements relating to the purification of quinoline
Inventor: ARNALL PAUL
IPC: C07D215/04
Filed: 1951-11-20
Abstract: Quinoline is separated from a mixture thereof with other nitrogenous bases of similar boiling point, that is within 5 DEG  C. of that of quinoline, such as primary amines, isoquinoline and polyalkyl pyridines, by adding an aqueous solution of tartaric acid to the mixture, the amount of acid being at least enough to precipitate all the quinoline as the acid tartrate, removing the acid tartrate and decomposing it to yield substantially pure quinoline.  The decomposition may be effected by means of sodium hydroxide or other alkali at room or elevated temperature; preferably toluene or other water-insoluble solvent for quinoline is added before or after the decomposition whereby the quinoline is recovered as a solution from which the solvent may be removed by fractionation.  Still purer quinoline is obtained if the acid tartrate is recrystallized from hot water before the decomposition.  The process is especially applicable to the recovery of quinoline from a mixture boiling between 235 DEG and 242 DEG  C. obtained by fractionation of a 235-250 DEG  C. coal tar base fraction, the mixture boiling between 242 DEG  C. and 250 DEG  C. being treated for recovery of quinaldine as described in Specification 736,589.  An example describes the treatment of a fraction B.P. 232-242 DEG  C.
Patent GB-819632-A (GB)
Title: Improvements in or relating to frequency modulated or controlled electronic oscillators
Inventor: CLIFFORD FREDERICK GEORGE
IPC: H03C3/16
Filed: 1954-09-21
Abstract: 819,632. Frequency modulation. POSTMASTER GENERAL. Nov. 15, 1955 [Sept. 21, 1954], No. 27316/54. Class 40 (5). An oscillator formed from the screen grid, control grid and cathode of a pentode valve V4 is frequency modulated or stabilized by injecting across a resistance R in series with the frequency determining tuned circuit of the oscillator a phase quadrature voltage derived from the oscillator through a cathode follower valve V5, and of amplitude varied by a voltage applied to the suppressor grid. As shown the cathode is connected to the junction of two capacitive reactances C41, C42, and isolated from earth at the oscillator frequency by a choke H.F.C. and the tuned circuit com. pleted by inductance L43 and series resistance R = (R1 + R2). Alternatively the resistance R may be in series with the reactances C41, C42. Also the inductance L43 may be replaced by a piezo-electric crystal. In a modification two pentodes respectively having inductive and capacitive reactants in the position of C41, C42 are employed to form an oscillator and feedback applied to separate resistors in series with each type of reactance through cathode followers. The oscillator may also be used (with a crystal) for frequency shift telegraphy.
Patent GB-407111-A (GB)
Title: Improvements relating to caissons
IPC: E02D7/30
Filed: 1932-10-01
Abstract: 407,111. Driving caissons. ROTINOFF, A. G., Regent House, Kingsway, London. Oct. 1, 1932, No. 27328. [Class 68 (ii).] Caissons of the type consisting of a hollow open-ended cylinder, from the interior of which earth is excavated, are driven by raising and dropping the kentledge on its upper end. Fig. 1 shows a caisson with an outer casing a of steel or concrete and a cutting- edge b; in it is a doublewalled mandrel c, forming a hollow annulus m, which has at its lower end a ring d flanged to rest on the lower part e of the casing a. The upper end of the mandrel has a head f which forms an air-inlet manifold for a number of cylinders g which rise and fall over stationary hollow pistons h. Between these are dollies i which support weights j forming kentledge for the caisson. In operation, the caisson, as it sinks, forces soil up the mandrel c until it passes the orifices o at the base of the annulus m, where a supply of compressed air cuts and raises the soil up the mandrel and ejects it through the delivery pipe c<1>. As the downward movement of the caisson becomes slower, compressed air is supplied intermittently to the cylinders g so as to lift the kentledge j; the air is then released, and the kentledge falling imparts a blow to the caisson, driving it down further until the desired load-carrying capacity is attained. The mandrel c may be used as a pilot cutter, being sunk lower than the caisson a. The kentledge consists of metal rings, each comprising two half rings bolted together ; the superposed rings are connected by bolts and cotter pins.
Patent GB-1493340-A (GB)
Title: Connector assembly for printed wiring board
IPC: H01R12/72
Filed: 1975-06-30
Abstract: 1493340 Making electric connectors MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 30 June 1975 [28 June 1974 19 May 1975] 27453/75 Heading B3A [Also in Division H2] A method of making an edge connector comprises forming two separate housing parts 52, 52<SP>1</SP>, mounting contacts 68 on at least one of the parts and inseparably joining the parts together. A blank 130 comprising contacts 68 interconnected by strips 134, 136 is mounted on the part 52 with the contacts in grooves 66 and apertures (140, Fig. 15, not shown) in the contacts fitting over projections 142; the two parts are joined by adhesive or welding and the strips 134, 136 are severed from the contacts, leaving portions projecting from the base of the connector.
Patent GB-505653-A (GB)
Title: Improvements in or relating to television and the like systems
IPC: H04N3/34
Filed: 1937-10-11
Abstract: 505,653. Television. SCOPHONY, Ltd., and OKOLICSANYI, F. Oct. 11, 1937, No. 27561. [Classes 39 (i) and 40 (iii)] The amplitude of a signal at any instant represents more than one optical property, of the area scanned at that instant. The properties may be the brightnesses of a plurality of elements or the colour components of one element of the picture. The signal can be represented by the formula A(xa<-1>+ya<-2> ... +ka<-n>), where a is the number of tone gradations in which the brightness of each element or colour is transmitted and x, y, k are the tonegradation integers for the brightnesses of the separate eleinents or colours at that instant. At least n-1 of the outputs of the scanning of the n elements or colours are individually limited to one of a values, and are then so modified that the respective, ranges of amplitude are a, a<2> ... a<n-1> times that of the remaining output. When the amplitudes are combined the resultant amplitude has the above formula. When an iconoscope is used, each of a plurality of cathode ray beams, which are produced by separate guns to scan the mosaic, is modulated by a different frequency and filters separate the signals which correspond to the respective simultaneously scanned areas. Fig. 1 (not shown). Alternatively an imagedissector tube has a plurality of anode targets, each of which scans one of the areas. For colour television images of the object are projected through differently coloured filters on the screens of a plurality of iconoscopes, Fig. 5 (not shown). The amplitudes of the outputs are limited to a gradations by deflecting an electronic beam to an extent dependent on the amplitude of the output. In the case of two outputs, they operate at right angles on the beam, which is incident on a composite electrode divided in a separate insulated fractions 19 in each direction (three as shown). Each part 19 is connected to a separate tapping on a resistance 21 which is in series with a resistance 23 of the same order as the internal resistance of the tube. The tappings are so arranged that the current through the tube, which varies according to the degree of deflection, complies with the above formula. To limit individual outputs to a gradations, one or more deflected beams are incident on one or more electrodes with a steps, Fig. 1, Provisional Specification (not shown). For reception a strip of light is deflected, according to the amplitude of the signals, over a composite filter which consists of parallel strips, each of which corresponds to one of the optical properties and is subdivided in accordance with the representation of that property by the corresponding amplitude ranges of the signal. Specification 439,236 is referred to.
Patent GB-699906-A (GB)
Title: Improvements in or relating to heat exchange apparatus
IPC: F25D17/00
Filed: 1949-10-27
Abstract: 699,906. Refrigerators; tubular heat-exchange elements. FRESH FROZEN FOODS, Ltd., and SCHOFIELD, F. H. Sept. 20, 1950 [Oct. 27, 1949 No. 27604/49. Classes 29 and 64 (iii) A heat-exchanger tube 4 is provided internally with spaced longitudinal fins 5 and externally with parallel longitudinal fins 6, 7 the fins 6, 7 all being disposed on the same side of and at right angles to an axial plane of the tube. In the form shown the outer external fins 6 are tangential to the tube wall and the tips of the fins 6, 7 line in a plane parallel to the tube axis. The internal and external fins 5, 7 are aligned. Alternatively the fins 5, 7 may be relatively staggered or the fins 5 may extend radially from the tube wall. The cross-sectional shape of the tubes may be square, rectangular, circular, triangular or elliptical and a number of tubes may be cast as a single unit. Apparatus incorporating the above tubes is shown in Fig. 2. Shelves are formed in a cabinet 11 by arranging tubes in closely spaced or abutting parallel relationship with the fins, 6, 7 of each tube depending downwardly. Metal trays 10 containing goods to be frozen are placed on the shelves and a liquid or gaseous cooling medium is passed through the tubes. The air within the cabinet is circulated by a fan 12 and the goods in the trays are cooled, partly by conduction through the tube walls but mainly the air which is cooled by contact with the tubes. Specification 627,465 is referred to.
Patent GB-679000-A (GB)
Title: Improvements relating to the electrodeposition of copper
IPC: C25D3/38
Filed: 1950-11-13
Abstract: 679,000. Electro - deposition of copper. GENERAL MOTORS CORPORATION. Nov. 13, 1950 [Nov. 15, 1949], No. 27610/50. Class 41. An electrolyte for the electro-deposition of copper contains thiourea and an anionic wetting- agent of the alkyl aryl sulphonate type having from 10 to 15 carbon atoms in the alkyl chain. The electrolyte may also contain a " spreader " (which permits the use of a wide range of current densities) such as O-benzoic sulphimide, sodium O-benzoic sulphimide, beta-naphthol, alpha-naphthol, itaconic acid, citraconic acid, mesaconic acid, molasses, or a trace of hydrochloric acid. The bath should be agitated, which may be done by forcing air through the solution, by rapid movement of the cathode, or by pumping solution from the bath and returning it back adjacent the cathode. The copper may be deposited on steel as an initial coating on which is electro-deposited nickel and then chromium. Specifications 560,046 and 633,780 are referred to.
Patent GB-439709-A (GB)
Title: Improvements in or relating to machines for cutting up paper and similar material
IPC: B26D3/02
Filed: 1934-09-27
Abstract: 439,709. Perforating webs. LEGG, O., 21, Goswell Terrace, Goswell Road, London. Sept. 27, 1934, No. 27732. [Class 31 (ii)] Short transverse slits arranged in staggered order are formed in a web of paper &c. by blades 5 on a roller 4 under or over which the web is passed to a machine for slitting it longitudinally. The web may pass over a table 2 having guides 3, and a slot 11 to receive the blades 5. The roller 4 has axles 8 which may be freely rotatable in slots 9 of brackets 10 or may be positively driven.
Patent GB-523591-A (GB)
Title: Improvements relating to a method of producing a fibre can body and apparatus for carrying out the same
IPC: B31C1/00
Filed: 1938-09-23
Abstract: 523,591. Labelling. FIBRE CAN MACHINERY CORPORATION. Sept. 23, 1938, Nos. 27751 and 27752. Convention dates, Sept. 30, 1937, and July 21, 1938. [Class 73] [Also in Groups XXVIII, VIII, XVI and XVII] In a turret machine for producing fibre can bodies by winding strip material on a mandrel a label container 270 for each can body is pivoted on a shaft 278. A stack of labels 273 is arranged on an inclined plate 272 so that they are stepped, a spring urged slide 274 pressing the uppermost label on to the mandrel 17 to which it is transferred by a roll 400. The label containers are rocked out of the path of the mandrel by a cam 294 and lever 286.
Patent GB-1157143-A (GB)
Title: Adamantane Derivatives
IPC: C07C217/08
Filed: 1966-06-21
Abstract: 1,157,143. 2-Adamantanamine and derivatives thereof. E. I. DU PONT DE NEMOURS & CO. 21 June, 1966, No. 27754/66. Heading C2C. [Also in Division A5] 2-Adamantanamine is prepared by oxidizing adamantane with air in the presence of benzoyl peroxide and cobalt acetate tetrahydrate to give 1-adamantanol and 2-adamantanone (which is identified by its oxime and 2,4-dinitrophenylhydrazone) and contacting the 2-adamantanone with hydrogen and ammonia in the presence of a palladium-on-alumina catalyst. N-methyl-, N-ethyl-, N-hexyl-, N-(3-methoxypropyl)-, N,N- dimethyl-, N-ethyl-N-methyl-, N-allyl-, N,N- diallyl-, N-propargyl-, N,N-dipropargyl-, N-(2- diethylaminoethyl)-, N - hydroxymethyl-, N - hydroxymethyl - N - methyl-, N - (diethylaminomethyl) - N - methyl-, N - (2 - hydroxyethyl)-, N,N - di - (2 - hydroxyethyl)-, N - formyl- and N - chloro - 2 - adamantanamine and N - (2 - adamantyl) pyrrolidine, N - (2 - adamantyl) glycine ethyl ester, 2-adamantyl azomethine and 2- benzaldiminoadamantane, and their salts, are prepared from 2-adamantanamine by usual methods via the intermediates ethyl adamant-2- ylurethane, N - caproyl - 2 - adamantamine, N - acetyl - N - methyl - 2 - adamantanamine and N-(2-adamantanyl) succinimide.
Patent GB-891670-A (GB)
Title: Improvements in and relating to the removing of scale from silicon iron and other metals
Inventor: POPPLE ROBERT GEOFFREY
IPC: C23G1/08
Filed: 1957-09-04
Abstract: Metals (particularly silicon iron) are descaled by treatment with an aqueous solution having a pH of 3-9 and containing a fluoborate which on hydrolysis gives off hydrofluoric acid and boric acid.  The solution preferably contains a cation which forms a readily soluble fluoborate and a less soluble fluosilicate: the preferred fluoborate is thus potassium fluoborate.  The solution may also contain ammonium fluoride; a wetting agent such as cetyl pyridinium bromide, the sodium salt of an alkylated naphthalene sulphonate or the sodium salt of secondary dodecyl sulphate; and an inhibitor such as thiourea. Treatment is preferably effected by boiling with air or steam agitation.
Patent GB-279488-A (GB)
Title: Process of obtaining light hydrocarbons
Filed: 1927-10-20
Abstract: 279,488. Florentin, J. M. F. D., Kling, A. J., and Matignon, C. Oct. 23, 1926, [Convention date]. Cyclic hydrocarbons.-The Specification as open to inspection under Sect. 91 (3) (a) describes a process similar to that described in Specification 276,007, [Class 32, Distilling &c.], applied to phenolic oils and tars such as low temperature carbonization tars, phenol being converted into benzene and cresols into toluene by the action of a dehydrating catalyst and hydrogen under pressure. In an example a phenolic oil from coke is treated with hydrogen and dried alumina at 450-460‹ C. at 80 kilos/cm<2>, yielding 75-80 per cent of a mobile liquid of which 65 per cent boils between 70‹ and 180‹ C., consisting mainly of benzene hydrocarbons. This subject-matter does not appear in the Specification as accepted.
Patent GB-358244-A (GB)
Title: Improvements in variable speed gears
IPC: F16H13/14
Filed: 1930-09-19
Abstract: 358,244. Variable speed gearing. BENN, H. H., Electricity Works, Lynton, Devon. Sept. 19, 1930, No. 28013. [Class 80 (ii).] Variable-speed friction gearing comprises two cones a, b connected by a movable roller c which is only slightly larger in diameter than the width of the space between the cones. Driving cone a draws the roller c down between the cones so that a toggle action is set up and the force producing frictional adhesion of the gear surfaces is a function of the load. Springs f may produce initial adhesion.
Patent GB-282947-A (GB)
Title: Method of preparing mercaptothiazoles
IPC: C07D277/72
Filed: 1926-11-09
Abstract: 282,947. Sebrell, L. B., and Teppema, J. Nov. 9, 1926. Mercaptothiazoles are made by reducing onitrohalogen aryl compounds with a soluble basic hydrosulphide in the presence of carbon bisulphide and hydrogen sulphide. In an example, 2-mercaptobenzothiazole is prepared by suspending o-nitrochlorbenzene in an aqueous solution of sodium sulphide saturated with hydrogen sulphide. The mixture is warmed and hydrogen sulphide and carbon bisulphide are passed through, or the reaction is carried out under pressure; o-nitrothiophenol and o-aminothiophenol are probably formed as intermediate products. In a modification, di-o-dinitrodiphenyldisulphide, prepared from o-nitrochlorbenzene and sodium polysulphide, may be used as starting material.