baber/WOPTO huggingface dataset:
Patent GB-926775-A (GB)
Title: Porphyrinic and chlorophyllic compositions and process thereof
IPC: C07D487/22
Filed: 1960-11-16
Abstract: Alkali metal salts of mixed porphyrinic and chlorophyllic compounds extracted from legumes or cereal grasses, which are effective in the treatment of hypercholesteremia, arthritis and arteriosclerosis, are obtained by (a) extracting legumes and cereal grasses having a water content of less than 10% with a solvent comprising a liquid aliphatic hydrocarbon containing from 6 to 12 carbon atoms and a monohydric alkanol containing from 2 to 10 carbon atoms in a volume ratio of from 2 : 1 to 8 : 1 (hydrocarbon to alkanol), (b) separating solids and distilling the clarified extract to remove water and alkanol, (c) distilling the extract so formed with an alkanol having a shorter hydrocarbon chain than that used in the initial extraction so as to remove the aliphatic hydrocarbon, (d) treating the alkanol solution with alcoholic alkali metal hydroxide to produce a pH of 11.5 to 11.8 at the boiling point of the solvent, allowing to cool and separating any solids which form, (e) treating the clarified alkanol solution with an aliphatic hydrocarbon having 6 to 12 carbon atoms, separating the alkanol phase and concentrating to remove the solvent therefrom, (f) treating the solid residue with demineralized water sufficient to hydrolyse the salts therein and adjusting the pH to 3.4 to 3.6 with a mineral acid to precipitatate the mixed porphyrinic and chlorophyllic compounds, (g) dissolving the separated solids in a monohydric alkanol of 1-4 carbon atoms and adding an alkali metal hydroxide to produce a pH of 8.4 to 8.6, (h) recovering the alkali metal salts of the porphyrinic and chlorophyllic compounds from the solution.  The legumes and cereal grasses are the green foliage portion of forage crops such as clover, alfalfa, soybeans, sudan, oats, wheat, barley and rye.  In the example, commercial dehydrated alfalfa meal is initially extracted with heptane and isopropanol in the ratio of 4 : 1 and potassium hydroxide is used as the alkali metal hydroxide.
Patent GB-976159-A (GB)
Title: A compressor bar for loose-leaf binders
IPC: B42F13/36
Filed: 1962-10-19
Abstract: 976,159. Filing papers. M. LEITZ, M. LEITZ, C. LEITZ, and H. KLAIBER, [trading as L. LEITZ [Firm of]]. Oct. 19, 1962 [Oct. 25, 1961], No. 39609/62. Heading B6E. A compressor bar 1 is provided with apertures 11 for filing posts, two spring wires 3 engaging seats 15, two apertures 12 and two pairs of slits arranged symmetrically each side of the transverse centre line of the bar, and a rockable member 2 having an operating tongue 24 received in one of the apertures 12 and two depending lugs 23 passing through one pair of slits 13 whereby the member is mounted on the bar. The member 2 may be arranged to co-operate with either set of slits 13 and aperture 12. The lugs are bent outwardly at 231, have embossments 233, or, are hookshaped, to prevent disengagement with the slits 13. The tongue 24 may be replaced by two lateral members 25.
Patent GB-397893-A (GB)
Abstract: 397,893. Ticket marking and issuing machines. HARRIS, W. P., 52, Hornchurch Road, Romford, Essex, and DAVIES, D. T., 14, Strathray Gardens, Hampstead, London. Feb. 29, 1932, No. 18858/33. Divided on 397,889. [Class 106 (iii).] In a ticket printing and issuing machine for vehicles and other purposes, in which tickets of 'variable value are printed and then severed from a roll of paper, a plurality of face or value keys operate an adjustable printing element in such a way that the total value is printed when more than one key is operated. The circular printing - wheel 20 is set by depressing one or more of the value keys 9 .. 12 through the medium of the shaft 19 to which the element 20 is fixed and on which the feed disc 42 is loosely mounted. The fingers 33 .. 36 on the lower end of the keys, when depressed, engage pins 41 and thereby rotate the feed disc 42 from zero position through a corresponding angle against the pull of the tension spring 71. The extent of the downward movement of any one finger is limited so as to give the correct angle of rotation to the reed disc. The feed disc carries, on an arm 47, a pawl 48, which engages a ratchet wheel 49 fixed on the shaft 19, whereby the printing wheel 20 is rotated through the same angle as the disc. A non-return pawl 52 engages the ratchet wheel 50 which is rigid with the ratchet wheel 49 and cam 51. When the keys are released, the spring 71 returns the feed disc 42 to zero position, the arm 43 then engaging stop 44 ; the printing element 20 and ratchet wheels 49, 50 remain set. The non-return pawl 52 is carried by an arm on a tubular spindle 53 from which depends an arm 54 which is moved by reciprocating operating mechanism during the issue stroke so as to lift the pawls 48, 52 and allow the ratchet wheels and printing wheel 20 to return to zero position. Should an incorrect value be set up and the error discovered before the carriage is moved, the printing wheel 20 may be zeroized by the handle 122 connected to the error key 63 which engages the arm 62 carried by the tubular spindle 53 and thereby lifts the pawls 48, 52 and allows the tension spring 71 to rotate the spindle 19. The cam 51 and a groove 70 in the feed disc 42 co-operate with levers 65a, 66, carried by the shaft 64, to lock the operating mechanism until the printing wheel 20 has been set and feed disc 42 returned to zero position. During the printing movement of the operating mechanism the fare or value printing wheel 20, and the other printing elements are locked in position by a sliding plate 163 with lateral fingers, 165 which engage circular series of perforations in the wheels. The plate 163 is held in the engaged position by a lever and spring and is disengaged by the carriage when the latter is in its rest position so that the printing wheels can then be set.
Patent GB-849375-A (GB)
Title: Improved yarn feeding and controlling means for knitting machines
Inventor: JACKSON ARTHUR THOMAS DOUGLAS
IPC: D04B15/48
Filed: 1957-12-23
Abstract: 849,375. Knitting-machines. MELLOR BROMLEY & CO. Ltd. Dec. 15, 1958 [Dec. 23, 1957], No. 39888/57. Class 74 (2). A multi-feeder cylinder and dial machine has a yarn feeding unit for each feeder comprising a wheel 13, around which the yarn is partly lapped on its way to the needles from its supply, and which wheel is frictionally driven from a common driving-wheel 53 secured to the dial driving gear 9. Each wheel 13 is secured to a shaft 19 extending through an opening in a bracket 14 and carried by a bearing-block 21. The end of the shaft 19 carries a friction disc 26, 27 which is resiliently urged into contact with the wheel 53 to constitute the frictional drive for the wheel 13. The bearing-block 21 also receives a vertical screw 33 which may be turned by a knob 40 to raise or lower the block and consequently vary the position of contact between the disc 26, 27 and wheel 53 to alter the speed of rotation of the wheel 13 feeding the yarn. The knob 40 is secured to a sleeve 35 which has a pin-and-slot connection 36, 37 with the screw 33 and which also is formed at its lower end as a spur pinion 45. This pinion 45 engages a ring- gear 46 common to the pinion 45 of each unit so that adjustment of the knob 40 of one unit when the gears 45, 46 are in engagement, to vary the speed of wheel 13 simultaneously adjust the speed of all the yarn feeding wheels 13. If, however, the knob 40 of any unit is raised, the gear 45 is removed from engagement with the gear 46 and the individual adjustment of that unit may be made without affecting the others. A collar 41 is secured beneath the knob 40 and is calibrated to indicate the extent of adjustment made. The back of each wheel 13 is hollow except for vanes 60 which serve to create a stream of air to dissipate fluff or lint. Specification 810,305 is referred to.
Patent GB-825730-A (GB)
Title: Process for the production of melamine
Inventor: ROBINSON JOSEPH NEWTON
Filed: 1957-12-27
Abstract: Melamine is produced by charging urea, guanidine sulphamate, ammonia and sulphur dioxide into a reaction zone maintained above 260 DEG  C. and under a superatmospheric pressure of ammonia, continuing the reaction to produce a product containing melamine, sulphur, ammonium sulphate and guanidine sulphamate, the yield of melamine being 30-55% of the theoretical yield based on the carbon content of the urea and guanidine sulphamate charged, continuously withdrawing the reaction product from the reaction zone as a suspension in molten guanidine sulphamate, and separately recovering melamine, ammonium sulphate and guanidine sulphamate.  Part at least of the recovered guanidine sulphamate may be re-cycled.  The mol. ratio of guanidine sulphamate to urea in the reaction charge is preferably from 0.8:1 to 2.3:1, and of SO2 to urea preferably 3:2.  The ammonium pressure is preferably above 34 atmospheres.  The reaction product is preferably separated into its components by leaching to form an aqueous solution of guanidine sulphamate and ammonium sulphate, treating the residue to obtain melamine, evaporating the leach solution to precipitate ammonium sulphate, cooling to precipitate guanidine sulphamate, returning the solution to the evaporation step, drying the guanidine sulphamate, e.g. in the molten state, and returning at least part of it to the reaction zone.  Reference has been directed by the Comptroller to Specifications 704,593 and 713,223.
Patent GB-1175392-A (GB)
Title: Method of Treating Protective Coatings for Semiconductor Devices
IPC: H01L21/00
Filed: 1967-09-04
Abstract: 1,175,392. Semi-conductor devices. HITACHI Ltd. 4 Sept., 1967 [14 Sept., 1966], No. 40360/67. Heading H1K. In order to expose surface regions of a semiconductor body 51a through apertures 55, 56 in two superposed insulating layers, the upper of which 53 is less etchant-resistant than the lower 52, a first etching mask 54 is used to define the apertures in the upper layer 53 and a second etching mask 57 is then applied so as to protect the exposed edges of the layer 53 around the apertures 55, 56 during a second etch which penetrates the lower layer 52. As shown, the body 51a is of N-type Si having a P-type diffused base region 51b and an N-type diffused emitter region 51c to comprise a transistor. The emitter region 51c is formed by phosphorus-diffusion through an oxide mask 52, a phospho-silicate glass layer 53 being formed simultaneously. The two etching masks 54, 57 are of photoresist materials, the second of which, 57, is applied to the entire surface and subsequently washed free of the bottoms of the apertures 55, 56. The exposed edges of the easily etched glass layer 53 remain protected by the second mask 57 during the second etching stage. After exposure of the semi-conductor surface through the apertures 55, 56, the photoresist layers 54, 57 are removed and electrodes, e.g. of Al, are applied. In an alternative embodiment, the first etching mask may be completely removed from the surface between the first etching stage and the application of the second etching mask.
Patent GB-1154719-A (GB)
Title: Improvements in or relating to Methods of Magneto-Hydrodynamic Production of Electricity
Inventor: PONCELET JACQUES
IPC: H02K44/08
Filed: 1966-09-09
Abstract: 1,154,719. Generators operating by electromagnetic interaction with fluids. INSTITUT FRANCAIS DU PETROLE DES CARBURANTS ET LUBRIFIANTS. 9 Sept., 1966 [9 Sept., 1965], No. 40457/66. Heading H2A. A gaseous fluid of high electrical conductivity for MHD generation of electricity is obtained by the introduction into a combustion zone of a hydrocarbon fuel, an oxidizing gas, and a monatomic element having a low ionization potential lower than 8 electron-volts, the combustion being carried out in the presence of at least one substance capable of forming CN radicals in the combustion gases. The combustion of the hydrocarbon fuel produces positive ions and free electrons of short life. Their life is increased, -by a factor of about 100, in known manner by the addition of the monatomic element of low ionization potential, the change of the positive ions being received by the monatomic element. The addition of a substance capable "of forming CN radicals increases the ionic concentration. The hydrocarbon fuel is preferably a light unsaturated hydrocarbon. The monatomic element may be selected from aluminium, bismuth, calcium, cerium, cesium, chromium, cobalt, copper, dysprosium, europium, gadolinium, gallium, indium, iron, lanthanum, lead, lithium, magnesium, manganese, molybdenum, neodymium, nickel, potassium, praseodymium, radium, subidium, samarium, scandium, silver, sodium, strontium, terbium, tin, titanium, ytterbium, yttrium and zirconium. The substance capable of forming CN radicals may be an inorganic compound, such as a cyanide, particularly a cyanide of any of the above-listed monatomic elements, gaseous ammonia, nitrogen oxides, or an ammonical compound; or may be an organic compound, such as an amine or a nitrile (e.g. tetracyanoethylene or malonic nitriles), or cyanogen, hydrocyanic acid, or ethyl isocyanide. In an example, a mixture of propane and air was introduced into an MHD combustion chamber together with an aqueous solution of potassium carbonate, the combustion temperature being about 2200‹ K. The resultant conic concentration was found to be increased by 50% by the introduction by vaporization into the combustion chamber of 0À3 mole of propene nitrile (CH 2 CH-CN) per mol of propane.
Patent GB-884965-A (GB)
Title: Visual indicator
IPC: G01R19/165
Filed: 1958-12-16
Abstract: 884,965. Transistor switching circuits. INTERNATIONAL BUSINESS MACHINES CORPORATION. Dec. 16, 1958 [Dec. 19, 1957], No. 40540/58. Class 40(6). In a circuit which provides a visual indication of whether a transistor 11 is conducting or non-conducting, the potentials applied at the points 22, 23 are such that in one state of the transistor the potential difference established across the neon discharge tube 17 is insufficient to cause it to ignite while in the other state the potential difference is sufficient to cause the tube 17 to ignite and so provide a visual indication. Owing to the provision of resistor 18 and capacitor 19 the circuit of the neon tube is self-oscillatory when a sufficient potential difference is applied thereto; this ensures a sharp cut-off of the tube when the voltage across the tube is reduced. In a first arrangement the potentials at 22 and 23 are -10 volts and -77 volts respectively. With transistor 11 non-conducting the potential difference of 67 volts is insufficient to ignite the tube 17. When transistor 11 conducts, owing to an input applied over line 15 from a previous stage, the voltage across the tube rises to 77 volts which is sufficient to cause it to ignite. In a second arrangement the potential at 23 is +67 volts and the tube 17 remains ignited only so long as the transistor 11 is non-conductive.
Patent GB-1341954-A (GB)
Title: Dyestuff preparations
IPC: C09B67/42
Filed: 1972-09-01
Abstract: 1341954 Dyestuff preparations; optical brighteners BAYER AG 1 Sept 1972 [2 Sept 1971] 40708/72 Heading D1B and D1P Dyestuff preparations free from water comprise a) a water-soluble or water-dispersible dyestuff as defined which is insoluble or sparingly-soluble (as defined) in phthalic acid C1 to C8-dialkyl ester, b) a phthalic-acid C 1  to C 8  dialkyl ester and c) a non-ionic and/or anionic dispersing agent which has a minimum solubility of 1 gm per litre of tetrachloroethylene, at room temperature and are made by mixing the components together, e.g. by grinding or kneading. The compositions may be diluted with tetrachloroethylene and used as dyebaths for dyeing, e.g. wool, cotton, polyamides and polyesters. Optical brighteners are included in the term "dyestuff". Preferably di-n-butyl esters of phthalic acid are used.
Patent GB-1255770-A (GB)
Title: Improvements in and relating to lapidary machines
Inventor: PARKINSON BRIAN
IPC: B24B55/06
Filed: 1970-08-25
Abstract: 1,255,770. Grinding. P. M. GARLAND, and B. PARKINSON, [trading as LAPIDARY WHOLESALE SUPPLY CO.]. 25 Aug., 1970, No. 40784/70. Heading B3D. A lapidary machine comprises a one-piece moulded base 1, on which is mounted a driving motor 12 and two bearings 5, 6 of a tool shaft 7 and which is shaped to provide two spaced-apart wells 2, 3 each at least partly traversed by the tool shaft, and a cover 17 as a one-piece moulding shaped to enclose the drive between the motor and the tool shaft, the bearings and at least partly a grinding wheel on the shaft and located in one of the wells. The shaft is driven by a belt 13 from the motor and a recess 8 in the base accommodates the belt and pulleys 9, 10. Water may be provided in the wells 2, 3 to moisten the grinding wheels 14, 15 mounted one at each end of the shaft. One end of the shaft may be adapted to receive a buffing or polishing tool and the base have a recess 16 to accommodate the tool. The cover is connected by a hinge 24 to the base and has portions 19, 20 for covering the bearings, portions 21, 22 for covering the grinding wheels, and a portion 23 for covering the buffing tool. Slots formed in the front of the portions 21, 22 are provided with strips of rubber or the like 25 which act as splash guards. In an alternative embodiment, one of the wells is replaced by a slide plate 26 formed with a slot 27, and one of the grinding wheels is replaced by a circular saw 28 which extends through the slot, Fig. 5. The base and cover may be moulded in plastics material or fibre glass, and the underneath of the base filled with expanded polyurethane for damping of noise and vibration.
Patent GB-1275299-A (GB)
Title: A fluid pressure dual braking system for a vehicle
IPC: F16D55/22
Filed: 1969-08-18
Abstract: 1275299 Dual braking systems KELSEYHAYES CO 18 Aug 1969 [26 Aug 1968] 41075/69 Headings F2E and F2F A dual brake system for vehicles has a first system 12 connected to the front wheel brakes 14 and a second system 16 connected to both front and rear wheel brakes 14, 18 at least each front brake being a disc brake comprising a caliper 34 having legs 36, 38, a cup shaped piston 46 reciprocating within a bore 48 of the caliper and slidably engaging aplug 52 screwed slidably to, or integral with leg 38. A pressure chamber 72  communicates through a bore 74 in plug 52 through pipeline 28 with the second system 16, and a pressure chamber 76 communicates through a passage-way 80, and line 22 with the first system 14, the ratio of areas of the piston faces on which pressure fluid from the two systems acts in chambers 72, 76 being preselected so that if pressure is lost in either system 50% of the total braking power is still available in the functioning system. The piston is urged in the same direction by pressure in either of said chambers. The disc brake may be of the floating caliper type (as shown) or of the fixed caliper type and two piston/cylinder arrangements may be then provided on each side of the brake rotor 21.
Patent GB-940316-A (GB)
Title: Plastics composition bag
IPC: B65D30/08
Filed: 1961-11-16
Abstract: 940,316. Laminates. THOMAS BONAR & CO. (CANADA) Ltd. Nov. 16, 1961 [May 31, 1961], No. 41109/61. Heading B5N. [Also in Division B8] A double walled bag comprises two plies of plastics composition, e.g. polyethylene, 2 and 3, one being treated to improve the ink bonding properties. Two sheets 2 and 3 are superposed and folded at 5 with the walls sealed together along their side edges and the edges 9 of the sheets at the mouth being heat sealed together. The treated sheet bears a printed inscription 4 which lies between the sheets 2 and 3 and may be on either the inner or outer sheet. The inner and outer sheets may be formed of different gauge material. Specification 704,665 is referred to.
Patent GB-1066066-A (GB)
Title: Process for the isolation of phosphorus-32 from irradiated sulphur
Inventor: RADICELLS RENATO
IPC: C01B25/02
Filed: 1964-10-08
Abstract: 1,066,066. Separation of phosphorus-32. PRESIDENCY OF COMISION NACIONAL DE ENERGIA ATOMICA. Oct. 8, 1964, No. 41149/64. Heading G6R. Phosphorus-32 is isolated by contacting a solution of neutron-irradiated sulphur with quartz or a silicon-containing glass or ceramic, and recovering the phosphorus-32 retained by the solid material. A solution of irradiated sulphur in carbon disulphide may be passed through a column of powdered soda-lime glass, borosilicate glass, porcelain or quartz. The column is washed with solvent, treated with air to eliminate the solvent, and then with aqueous HCl or water (which may contain orthophosphate carrier) to elute the phosphorus-32 in the form of orthophosphate. Prior art processes are described in which (1) irradiated sulphur is distilled and the residue containing P-32 is treated with HC1; (2) irradiated sulphur is dissolved in hot toluene and the solution passed through an Al 2 O 3  column on which P-32 is retained and eluted with NaOH solution; (3) P-32 in a solution of irradiated MgSO 4  is oxidized to phosphate, ammonia is added, the precipitate dissolved in HC1, and the solution purified by precipitation of BaSO 4  and removal of cations by exchange resins.
Patent GB-1321095-A (GB)
Title: Process for the production of ethylene oxide and a catalyst therefor
IPC: C07D303/04
Filed: 1970-08-26
Abstract: 1321095 Oxidation catalysts SNAM PRO GETTI SpA 26 Aug 1970 [26 Aug 1969 29 July 1970 (3)] 41159/70 Heading B1E [Also in Division C2] Catalysts comprise as active components silver, barium and calcium on an inert support, the amounts of the active components providing 4-15 g-atom Ag per g-atom of Ba+Ca. The active components are precipitated from a solution containing soluble salts of Ag, Ca and Ba and the precipitate is distributed on the support as a suspension.
Patent GB-1197996-A (GB)
Title: Induction Air-Conditioning Apparatus
IPC: F24F1/01
Filed: 1967-09-08
Abstract: 1,197,996. Air-conditioning units. LUWA A.G. 8 Sept., 1967 [9 Sept., 1966; 9 Dec.,1966], No. 41183/67. Heading F4V. An induction air-conditioning unit comprises a casing 102 having a primary air chamber 114 with one or more outlet nozzles 148, supplied with purified air from a central installation and including a heating heat exchanger 126 positioned in a thermally insulated cell 140 controlled by a pivoted flap 132a, 132b, and a secondary air cooling heat exchanger 158 controlled by a pivoted flap 174, each heat exchanger being supplied from a separate water circuit. An air filter 160 and condensate collector 166 are provided and the flap 174 also controls a by-pass duct 176. In two other embodiments (Figs 2, 3, not shown), each heat exchanger is enclosed in a thermal cell having an open inlet or outlet at top or bottom depending whether the heat exchanger is cooling or heating air respectively, and the secondary air by-pass inlet is in the front wall 108 of the casing 102. The heat exchanger 158 may be connected to the hot water conduit system to heat the room by convection.
Patent GB-1468586-A (GB)
Title: 2,3,5-trialkylsubstituted hydroxybenzyl isocyanurates
IPC: C11B5/00
Filed: 1974-09-24
Abstract: 1468586 Lubricants; animal and vegetable oils; fuels CIBA-GEIGY AG 24 Sept 1974 [25 Sept 1973] 41461/74 Headings C5F C5C and C5G [Also in Divisions C2 and C3] Lubricants, animal and vegetable derived oils, gasoline, mineral oil and fuel oil are stabilized against the action of heat by incorporation of a compound of the Formula (Ia)  when R a  is hydrogen or a Group (II) wherein R, R<SP>1</SP> and R<SP>2</SP> are C 1-8  alkyl or C 5-7  cycloalkyl or R<SP>1</SP> and R<SP>2</SP>, together with the benzene ring, form a tetrahydronaphthalene nucleus and R<SP>3</SP> is hydrogen or C 1-7  alkyl, and R b  is a Group (II).