baber/WOPTO huggingface dataset:
Patent GB-822957-A (GB)
Title: Improvements in or relating to steroid compounds
IPC: C07J75/00
Filed: 1957-02-27
Abstract: The invention comprises 5a - and 5b -pregnanes of the general formul\sp <FORM:0822957/IV (a)/1> and <FORM:0822957/IV (a)/2> wherein R represents a keto or hydroxy group or a hydrogen atom; and a process for the preparation thereof by reacting the required 3-keto-5a - or 3-keto-5b -pregnane with acetone cyanohydrin in the presence of a basic catalyst to form a compound of the first general formula, and, when required, brominating this compound in a solution of a halogenated organic solvent with at least the theoretical amount of bromine dissolved in the same solvent to form a compound of the second general formula.  The basic catalyst may be an alkali metal cyanide, ammonia or an organic base such as pyridine, ethanolamine, dimethylamine, trimethylamine or triethylamine.  The reaction with the acetone cyanohydrin may be carried out in the presence of an inert organic solvent, e.g. methanol, ethanol, methylene chloride or chloroform.  The halogenated organic solvent may be methylene chloride or chloroform.  The above process may be extended in that the 21-bromine atom of the compound of the second general formula is replaced by an acyloxy group containing up to 6 carbon atoms and hydrogen cyanide is eliminated from the 3-position by reaction with the required alkali metal acylate, e.g. a potassium acylate, preferably in boiling acetone, to form a 5a - or 5b -pregnane of the general formula <FORM:0822957/IV (a)/3> wherein R has the above significance, and R1 represents an acyl group containing up to 6 carbon atoms.  This additional process may be carried out in two stages by reacting the 21-bromo compound with the required carboxylic acid in a boiling organic solvent, e.g. in boiling acetone, in the presence of an alkali metal or ammonium bicarbonate in an amount stoichiometrically less than the amount of acid and hydrolysing the resulting 3-monocyanohydrin-21-acyloxy compound in the presence of a weak organic or inorganic base such as pyridine or an alkaline earth metal hydroxide to eliminate hydrogen cyanide.  A number of detailed examples are given.
Patent GB-396475-A (GB)
Title: Improvements in and relating to systems of electric motor control
IPC: H02P5/50
Filed: 1932-03-05
Abstract: 396,475. Maintaining proportional speeds of motors. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.-(Assignees of Allgemeine Elektricitõts- Ges.; 2, Friedrich Karl-Ufer, Berlin.) March 5, 1932, No. 6684. Convention date, March 7, 1931. [Class 38 (iii).] In a system in which motors 1 are kept in proper speed relationship by means of electric differentials 3 acting on field regulators 4, a carbon resistance 7 is connected in parallel with the field regulator of a motor while that motor is being started after which the resistance is gradually and continuously increased and finally cut out. To start a particular motor its corresponding pushbutton (not shown) is closed to energize an associated contactor 5 which connects the motor to the supply in series with starting resistance 8. The resistance 8 is excluded in steps by a sequential contactor system to bring the motor up to speed, and during this time the field regulator 4 is short-circuited by the resistance 7. When the last section of resistance 8 is cut out an electromagnet 9 is energized and gradually releases the pressure on the resistance 7 under the control of a dashpot, so that the regulator 4 becomes gradually effective. Contacts 12 are finally closed to energize a self-maintaining contactor 6 which connects the motor directly to the supply, and opens the circuit of the contactor 5. The resistance 7 may be shortcircuited during starting by additional contacts, and a compression resistance controlled by an auxiliary damped relay may be provided in series with the electromagnet 9.
Patent GB-1408925-A (GB)
Title: Medical pad
IPC: A61K9/70
Filed: 1972-02-14
Abstract: 1408925 Dressings IMPERIAL CHEMICAL INDUSTRIES LTD 11 Jan 1973 [14 Feb 1972] 6692/72 Heading A5R [Also in Division Dl] Pad: A pad for administering a medicament comprises a sheet 3 of material provided with fibres 4 in the form of capillary tubes extending through the sheet 3 and projecting from one face thereof for a distance of 20 to 1000 microns. A dressing incorporating the pad comprises a rigid case 1 of metal or plastics material, closed by the sheet 3 so that the fibres 4 projecting outwardly. A reservoir 5 so defined contains the medicament which may be injected through a plug 6. Straps 7 are used to secure the dressing to the skin. The sheet 3 may be intrinsically permeable or be rendered permeable by piercing it in 5 to 10 places. Pressure may be applied to the medicament from a chamber 8 separated from the reservoir 5 by a flexible membrane 9. The chamber 8 may contain polymer-coated sodium bicarbonate granules which liberate carbon dioxide when an acid is injected through a plug 10. Alternatively, the pressure may be applied using a distendible reservoir filled under pressure, a spring-loaded reservoir or a pressure bandage. In an alternative embodiment, the chamber 8 may be omitted. The reservoir may take various forms. For example, it may be a permeable sachet of a plastics material, a foam, a capsule to be pierced before use, a piece of wadding, or a gel. A diffusion layer may be interposed between the reservoir 5 and the pad 3 to control the rate of release of the medication. The diameter of the fibres is 8 to 100 microns and they make an angle of 45 to 90 with the sheet 3. The fibres 4 may be composed of glass, carbon, alumina, zirconia, silicon nitride, nylon, polyparabenzamide or stainless steel. The sheet 3 may be made of plastics or metal although several materials are stated to be suitable. As one example, the medicament may be polypeptides. Method of manufacture: Four methods of forming pads are given. In one example glass capillary tubes 15cm long and 40 microns in diameter are placed 0.5 mm apart, in parallel manner, on a glass plate, with their ends retained on two strips of double sided adhesive tape. A film, 0.5 mm to 1 mm thick, incorporating the tubes is formed by brushing the tubes with a solution in acetone of cellulose acetate containing acetyl triethyl citrate as plasticiser and allowing the solvent to evaporate. Several such films are prepared and cut into 2.5 cm squares whose faces are brushed with acetone and laid on top of each other to form a cube wherein the tubes are aligned in the same direction. The cube is cut with a microtome, transverse to the direction of alignment of the tubes to form sheets about 1 to 2mm thick. One face of the sheet is etched away by brushing it alternately with acetone and water until about 100 microns of the tubes are exposed. Air is blown through the pad during the etching process to avoid blockage of the tubes.
Patent GB-1141707-A (GB)
Title: Improvements in or relating to combating nematodes in soil
IPC: A01N43/40
Filed: 1966-02-16
Abstract: 1,141,707. Nematocidal compositions containing 4-halo-pyridines. PHILIPS GLOEILAMPENFABRIEKEN N.V. 16 Feb., 1966 [18 Feb., 1965; 24 April, 1965], No. 6782/66. Heading A5E. Plant-parasitic nematodes in soil are inactivated by dispersing in the soil a 4-halo-pyridine or an acid addition salt thereof or a 4-halopyridine-N-oxide, above or in admixture with a solid or liquid diluent or carrier. The active substance may be added to the soil as a solution in water or mineral oil, optionally containing a lower aliphatic alcohol as watermiscible solvent. The active substance may also be employed in admixture with solid granular carriers which may be mineral porous granules (e.g. attaclay or pumice), mineral non- porous granules (e.g. sand or ground marl) or granules of organic materials (e.g. coffee grounds or granular particles or stems of tobacco leaves). Alternatively the active substance may be employed in the form of emulsions, water-miscible oils, pastes, wettable powders, water-soluble powders, dusts or aerosols. The active substance may also be used mixed with other pesticidal materials such as soil fungicides (e.g. chloropicrim, tetramethylthiuramdisulphide, pentachloronitrobenzene, zineb; moneb, 8 - hydroxyquinoline, organic tin and mercury compounds, particularly triphenyl tin hydroxide or the acetate or butyrate thereof, or the sodium salt of monomethyl-dithiocarbamic acid); soil insecticides (e.g. dieldrin, endrin, toxaphene or hexachlorocyclohexane) and other nematicides, e.g. a mixture of 1,2 - dichloropropane and 1,3-dichloropropene, sodium N - methyl - dithiocarbamate or 1,2 - dibromo - -3 - chloropropane). In the examples, the active substance employed is 4 - chloro - pyridine - N - oxide or the hydrochloride salt of 4 - chloro - pyridine or of 4 - bromo - pyridine.
Patent GB-163524-A (GB)
Title: A new or improved sealing means for packages
IPC: B65D63/06
Filed: 1920-03-06
Abstract: 163,524. Perin, L. March 6, 1920. Seals. - A seal for the ends of tapes &c. around packages comprises a container with slots to receive the tape ends and with securing devices around which the separate ends are secured, the whole being finally covered with wax or similar sealing-material. In one form, Figs. 1 and 3, the tape ends & are passed through slots 4 in the container 1 and are gripped by tongues 3, formed by slots 2 in the container and bent up and over as shown in Fig. 3. An interrupted flange 5 on the container prevents the wax from spreading. In a second form, Fig. 4, the flange 7 is complete and the tape ends are secured by tongues 8, formed by slots 9 incomplete at 11, the tongues being pressed down into their original positions after being temporarily raised to receive the tape ends and to form the spurs 13 on the tongues and corresponding recesses 12 in the container.
Patent GB-1079980-A (GB)
Title: Improvements in or relating to ice detectors
Inventor: REES PATRICK
IPC: G01M1/22
Filed: 1965-02-17
Abstract: 1,079,980. Icing detectors. ROSEMOUNT ENGINEERING CO. Ltd. Jan. 5, 1966 [Feb.17, 1965], No.6916/65. Headings G1A, G1N and G1X. A shaft 11 is mounted for rotation about a fixed axis, a dynamically balanced rotor 16-18 is connected to the shaft by a flexible member 15 with one portion 17 arranged normally to be heated, and indicator means are responsive to the vibration which occurs when ice forms on the portion 18 from the adjacent environment. The indicator may be determined by a strain gauge in the resilient member, photo-electric or capacitive means and may be calibrated in terms of ice accretion. The portion 18 may be heatable to remove deposited ice.
Patent GB-888823-A (GB)
Title: Improvements in or relating to gas purifiers
IPC: F24F8/108
Filed: 1960-02-26
Abstract: 888,823. Air conditioning. NUTONE Inc. Feb. 26, 1960 [Dec. 22, 1959], No. 6917/60. Class 137 A kitchen air-conditioner comprises a hood 13 incorporating a grease filter 22, an impeller 19 which draws vitiated air through the filter and passes it into a plenum chamber 44 which reduces the velocity of the air before it passes to a smoke filter 45 consisting of glass mat filtering material folded as an accordion, the air then passing through an odour filter 55 comprising activated charcoal. The hood and fan assembly may be made in an integral part separate from the plenum and filter assembly.
Patent GB-768194-A (GB)
Title: O-(phenylsulphonyl)-glycollyl anilides and process of preparing aminoacetyl-anilides therefrom
IPC: C07C237/00
Filed: 1955-03-10
Abstract: The invention comprises O-(phenylsulphonyl)-glycollyl-anilides of formula <FORM:0768194/IV(b)/1> wherein R1, R2 and R3 are hydrogen or alky groups containing not more than four carbon atoms.  They may be reacted with amines to give aminoacetyl-anilides.  In examples, O-(p-toluenesulphonyl or -phenylsulphonyl)-glycollyl-2 : 6-xylidide is prepared by reacting a benzene solution of O-(p-toluenesulphonyl or -phenylsulphonyl)-glycollyl chloride with 2 : 6-xylidine.  O - (p - toluenesulphonyl) - glycollyl - 2 : 6-xylidide is heated with alcohol and diethylamine with the gradual addition of alcoholic sodium hydroxide solution to give N-diethylaminoacetyl-2 : 6-xylidide.  O - (p - toluenesulphonyl and/or -phenylsulphonyl)-glycollyl chlorides are prepared by reacting the corresponding substituted glycollic acids with thionyl chloride.
Patent GB-626389-A (GB)
Title: Improvements in or relating to aircraft
IPC: B64C23/00
Filed: 1947-03-14
Abstract: 626,389. Propelling aircraft. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. March 14, 1947, No. 7100. Convention date, July 21, 1943. [Class 4] [Also in Group XXVI] In a jet-propelled aircraft the jet nozzles include flap members pivoted to the aircraft framework to constitute the discharge opening or openings of the nozzles, the members being relatively movable for varying the size of the discharge opening to control the jet effect and jointly movable for varying the direction of discharge from said openings. One or more jetpropulsion units 11 are installed within the wings 10, the jet being passed between and controlled by hinged flaps 21, 22, normally conforming to the wing profile but capable of movement relative to each other, the upper flap 21 being provided with vertical end plates 25 movable therewith. The flaps 21, 22 on each side of the aircraft may be moved differentially to enable the jet thrust to augment the aileron effect or they may be moved simultaneously downwards to act as flaps and to cause the downwardly directed jet thrust to produce increased lift. The flaps may be hinged divergently to reduce the thrust and to act as dive brakes. Specification 590,799 is referred to.
Patent GB-649819-A (GB)
Title: Improvements in pneumatic tyre
IPC: B60C9/04
Filed: 1949-03-16
Abstract: 649,819. Pneumatic tyres. UNITED STATES RUBBER CO. March 16, 1949, No. 7175. Convention date, May 12, 1948. [Class 144 (ii)] A tyre cover 1 is formed of nylon cord plies anchored to inextensible bead elements 2, 3, the cord parts in the crown region 4 of the tyre being disposed at an angle of 26-31 degrees to the circumferential centre line and being less elastic than the cord parts in the side wall regions 5, 6. The particular angular disposition and physical properties of the cords are obtained by the conventional shaping of the tyre from a flat band A in which the nylon plies have an original cord angle of 55¢-57¢ degrees, the cord parts in the crown region receiving a permanent elongation which reduces their elasticity under inflation stresses, and the cord parts in the side wall regions being crowded together.
Patent GB-549650-A (GB)
Title: An improved device for reducing eddy-current losses in stator end plates of dynamo-electric machines
IPC: H02K3/42
Filed: 1941-06-06
Abstract: 549,650. Dynamo-electric machines. AKT.- GES. BROWN, BOVERI & CIE. June 6, 1941, No. 7212. Convention date, April 6, 1940. [Class 35] To direct leakage fluxes from the end plate b, of a dynamo-electric machine, and so prevent losses due to eddy currents, three sets of laminations f, g, hare arranged on the end plate. Set f lies radial planes, set g circumferentially and set h in planes perpendicular to the axis. Each set deals with a component of the leakage flux. The thickness of set f may be only a small fraction of the thickness of the endplate b. The Specification as open to inspection under Sect. 91 includes also the application of non-laminated magnetic material of high electric resistance to the endplate. Only one set of laminae, such as f, may be used. This subject-matter does not appear in the Specification as accepted.
Patent GB-162874-A (GB)
Title: An improved device for indicating the relative proportions of liquids and gases
IPC: G01F1/28
Filed: 1920-03-10
Abstract: 162,874. Hanson, G. F., and Dreyer, G. March 10, 1920. Addition to 146,778. Measuring - apparatus.- In a modification of the device described in the parent Specification applicable for indicating the relative proportions of gases or liquids prior to their being mixed for instance for ascertaining the proportions of air and petrol supplied to the carburettor of an internal-combustion engine, two independent chambers with inlet and outlet openings are employed instead of a single chamber. The casing a, Figs. 1 and 2, is divided by a partition a<1> into two chambers b, b<1> each having inlets and outlets b<3>, b<2>, the inlets b<3> being fitted with tubular bodies c, c<1> tapered internally from the lower ends upwards. Spheres e, e<1> disposed within the bodies c, c<1> are suspended from arms d<1>, d<2> secured to the end of a spindle d mounted upon the partition a', and a pointer f on the spindle d moves over a graduated scale f<1>. When the device is used with various liquids or gases the densities of which vary, means is provided for varying the taper of the bodies c, c<1>. The bodies may be cut longitudinally at diametrically opposite points x, x<1>, Fig. 3, from their upper ends, to near their lower ends and provided with tapering recesses to receive wedges y, y' the recesses preferably being provided upon the outside with overlapping extensions z, z<1>. By moving the wedges downwards the taper of the bodies c, c<1> can be increased. Fig. 5 shows a modification in which the spindle d carries on opposite sides of the partition discs g from the peripheries of which project arms g<1> carrying at their outer ends the bodies e, e<1> which move within curved and internally tapered bodies h. For indicating the relative proportions of two fluids that are mixed as they pass through the device, a single disc with two arms is employed. The parts are balanced so that the bodies e, e<1> normally occupy a position corresponding to the zero or middle position of the pointer f.
Patent GB-1272536-A (GB)
Title: Electroplating solutions and process for electroplating using such solutions
IPC: C25D3/02
Filed: 1970-02-16
Abstract: 1,272,536. Electro-deposition of metals from non-aqueous solutions. UNITED STATES ATOMIC ENERGY COMMISSION. Feb. 16, 1970 [March 24, 1969], No. 7252/70. Heading C7B. Metal, e.g. Ni; Cu; Ni-Cu alloy; Co; Pb; Zn; Ag; or Cd, is electro-deposited from an electrolyte which is non-aqueous or contains not more than 8% water, and contains dimethyl sulphoxide and a salt of the metal to be deposited. The bath may also contain as solvents ethylene glycol or dimethyl formamide; as complexing agents, ammonium chloride, nitrate or cyanide; and if copper is to be deposited, sodium or ammonium hypophosphite or hypophosphorous acid. The surface to be plated may be of brass, bronze copper, steel, iron zinc or cadmium. The cell used may be constructed of, or coated with, glass, PTFE, or polychlorotrifluoroethylene, and may be provided with heating means. Soluble anodes may be used. Prior to plating, the workpiece may be subjected to vapour degreasing or caustic cleaning, and subsequently to rinsing, e.g. with dimethyl sulphoxide. The bath may be agitated; and when using a bath containing more than one metal salt, e.g. copper and nickel salts, variation of current density will produce variation of the alloy composition deposited.
Patent GB-916196-A (GB)
Title: Oil atomizing apparatus for the treatment of consumption
IPC: A61M15/00
Filed: 1961-02-28
Abstract: 916,196. Respiratory apparatus. IWAT, R. Feb. 28, 1961 [Aug. 16, 1960], No. 7291/61. Class 81 (2). [Also in Group XXIX] An oil atomizer for respiratory use comprises an oil vessel 1 with an air inlet 3, an outlet 9 and a motor rotatable shaft 11 in the vessel, the shaft carrying a bladed agitator 13, bladed atomizers 14, 15 and a propeller 16 which acts as a flywheel. An induction motor 12 is fixed on the vessel 1 so that the shaft 11 projects downwardly into the vessel. Oil is poured into the vessel through a tube 3 having an apertured cover 4. An apertured disc 6 is rotatable beneath the cover so that its aperture 8 registers by a variable amount with the aperture 5 in the cover to regulate the flow of air into the vessel. When the shaft is rotated, the oil is agitated to form droplets by the agitator 13 carried by the lower end of the shaft, the oil droplets being atomized by the atomizers 14, 15 and the propeller 16, which are carried at successively higher levels on the shaft. Atomized oil passes from the vessel to a mouthpiece 10. The propeller has a heavy outer ring 17 so that it acts as a flywheel to prevent the speed of rotation of the shaft changing abruptly.
Patent GB-557762-A (GB)
Title: Improvements in or relating to braking systems
IPC: B60T13/24
Filed: 1942-06-01
Abstract: 557,762. Hydraulic brakes. BENDIX AVIATION CORPORATION. June 1, 1942, No. 7412. Convention date, Aug. 16, 1941. [Class 103 (i)] In power-braking systems, such as that described in Specification 550,450 and containing a check valve 72 in the master cylinder 10 to maintain a slight pressure in the brake line 24, the control valve of the servo-motor is connected by a conduit 34 to the master-cylinder so that the control valve is subject only to the pressure prevailing in the master-cylinder.
Patent GB-952049-A (GB)
Title: Improvements relating to the generation of electricity
Inventor: THRING MEREDITH WOOLDRIDGE
IPC: H02N3/00
Filed: 1959-03-03
Abstract: 952,049. Generators operating by electromagnetic interaction with fluids. NATIONAL RESEARCH DEVELOPMENT CORPORATION. May 30, 1960 [March 3, 1959], No. 7425/59. Heading H2A. Electricity is generated by passing a conductive gas at high velocity through a magnetic field, only a fraction of the total volume of gases passing through the field being heated to the temperature necessary to provide the desired conductivity, this superheated portion being passed as a series of thin layers extending transverse to the flow direction. In Fig. 1, air is drawn through compressor 3 and heat exchanger 4 into a combustion chamber 1 where it mixes with oil fuel from supply pipe 2. Combustion gases at a temperature of about 2000 C. pass through a convergent/divergent nozzle 6, a magnetic field 7, heat exchanger 4 and a further compressor 10 to the atmosphere. A series of high temperature layers are produced, for example by providing a grid of tubes 12 and 13 (Fig. 3) just upstream of the nozzle 6. Tubes 12 and 13 supply liquid fuel and oxygen respectively under control of valves 17 and 20 which are mechanically controlled so that fuel and oxygen are supplied for about <SP>1</SP>/ 20  of the cycle to heat the layers so that the gases are sufficiently conductive to provide an electrical output between electrodes 8 and 9 due to the action of the magnetic field. In place of the grid of tubes for heating the high temperature layers, bursts of nuclear or electrical energy may be used such as for example by providing a coil around the nozzle 6 to effect high-frequency discharges. A readily ionizable compound such as a sodium or potassium salt may be added to fuel or gases to improve the electrical conductivity.