baber/WOPTO huggingface dataset:
Patent GB-1367956-A (GB)
Title: Method of extracting phosphoric acid from solutions obtained by the attack of nitric acid on natural phosphate-bearing rocks
IPC: C01B25/234
Filed: 1971-10-28
Abstract: 1367956 Monoammonium phosphate, monoalkafi metal phosphate; phosphoric acid RHONE PROGIL 28 Oct 1971 [29 Oct 1970] 50215/71 Heading C1A Phosphoric acid together with nitric acid are extracted from a solution obtained by the attack of nitric acid on phosphate containing rock into a substantially water immiscible polar organic solvent, the phosphoric acid being reextracted into an aqueous medium in 2 successive stages. In the first stage the medium contains ammonium nitrate or alkali metal nitrate either added per se or produced in situ from initially added NH3 or another alkali and extracted nitric acid and also during this stage a major proportion of the phosphoric acid is converted into monoammonium phosphate or a monoalkali metal phosphate and re-extracted from the organic solvent. In a first embodiment phosphoric acid in the organic solvent is converted into monoammonium or a monoalkali metal phosphate which is separated off as an aqueous slurry and then the organic solvent in a second re-extraction stage is contacted with an aqueous solution of ammonium nitrate or an alkali metal nitrate. In a second embodiment phosphoric acid contained in the organic solvent (3) is re-extracted in a first stage (1) into an aqueous ammonium nitrate or alkali metal nitrate solution (4, 12) and converted to monoalkali metal phosphate or monoammonium phosphate (in 6), the organic solvent (14) being then contacted in a second re-extraction stage (2) with an aqueous solution of ammonium nitrate or alkali metal nitrate (13). The organic solvent may be iso-butanol, iso-amyl alcohol, or Cellosolve (Registered Trade Mark).
Patent GB-1446980-A (GB)
Title: A-aminooxy-carboxylic acid hydrazides
IPC: A61P31/04
Filed: 1974-11-20
Abstract: Substituted  alpha -aminooxycarbohydrazide derivatives of the formula I <IMAGE> are obtained by reacting an  alpha -aminooxycarbohydrazide with a compound of the general formula X = O. The substituents have the following meaning:   X is a cycloalkylidene radical or a methylene group which is substituted by an alkyl radical with 1-5 carbon atoms and/or phenyl or furyl radical which is optionally substituted by halogen, hydroxyl, nitro and/or amino groups;   R is hydrogen or a benzyl radical   Y is hydrogen   Z is an acyl radical derived from a pyridinecarboxylic acid or Y and Z together are one of the substituents which X can represent.     The compounds are valuable tuberculostatics. Compounds substituted on the hydrazide group by isonicotinoyl or 5-nitrofurfurylidene group are particularly effective.
Patent GB-1507529-A (GB)
Title: Combustion apparatus
IPC: F23R3/16
Filed: 1975-12-10
Abstract: 1507529 Gas turbine combustion apparatus GENERAL MOTORS CORP 10 Dec 1975 [12 Dec 1974] 50581/75 Heading F1L The subject matter is the same as that disclosed in Specification 1507530 but the claims are concerned with the barrier disposed between the combustion and dilution zones of the combustion apparatus.
Patent GB-1240215-A (GB)
Title: Process for dyeing acetate fibres
IPC: D06P1/41
Filed: 1969-10-17
Abstract: 1,240,215. Dyeing cellulose diacetate with basic dyes. HODOGAYA KAGAKU KOGYO, K.K. 17 Oct., 1969 [17 Oct., 1968], No. 51039/69. Heading D1B. Cellulose diacetate fibres are dyed with a solution of a basic dye in water in presence of a salt of a sulphuric ester of formula: in which R 1  is a straight chain alkyl radical and R 2  is hydrogen or a straight chain alkyl radical the groups R 1  and R 2  together containing a total of 9 carbon atoms, M is Na. K. or NH 4 . Preferably the ester is sodium ndecyl sulphate or sodium 1-methylnonyl sulphate 1 to 10 moles of ester being used per mole of basic dye. The pH of the dyebath is preferably 3 to 5 and non-ionic surfactants are used.
Patent GB-1517938-A (GB)
Title: Headphone system
IPC: H04S1/00
Filed: 1975-12-12
Abstract: 1517938 Stereophonic circuits MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 12 Dec 1975 [25 Dec 1974] 51050/75 Heading H4R In a stereophonic headphone system which simulates listening to stereophonic loudspeakers, each earphone receives, in addition to its own signal, a portion of the other signal of the stereophonically related signals after delay and filtering of said other signal. Stereophonically related signals from a source 1 are applied through adders 14, 15 and notch filters 16, 17 to earphones 8, 9 of a pair of headphones 7. Delay circuits 10,11 provide a delay (e.g. about 400 ÁS) and low pass filters 12, 13 have a cut-off frequency of 400 Hz or below and an attenuation characteristic of - 1À5 to - dB/oct. The notch filters compensate for a resonance effect due to the air volume in the user's auricle between the earphone and the eardrum.
Patent GB-1245353-A (GB)
Title: Improvements in or relating to magnetic core shift registers
Inventor: BITRAN MUNIR
IPC: G11C19/04
Filed: 1969-10-22
Abstract: 1,245,353. Counters ; shift registers; electrical digital data-storage. PATELHOLD PATENTVERWERTUNGS-UND ELEKTRO-HOLDING A.G. 22 Oct., 1969 [24 Oct., 1968], No. 51694/69. Headings G4A and G4C. [Also in Division H3] In a magnetic shift register or twisted loop ring counter with shift between stages in either direction, each stage consists of a main core K n-1  to K n+1 , Fig. 1, and an auxiliary core K<SP>1</SP> n-1  to K<SP>1</SP>n+1 switched in turn by two phase pulses I p1 , I P2  applied to respective exciting windings R, the signal induced in an output winding S by a switched core being applied through a diode D 1+  or D 1-  to an input winding E on the succeeding or preceding core, depending on the selective closure of a switch S 1+,  S 1- , S 2+ , S 2-  at the time the associated core was pulsed by Ip 1  or Ip 2 . By alternate closure of switches S 1+,  S 2+  in phase with pulses I p1 , I p2,  respectively, stored data is transmitted forwardly from stage to stage, while alternate closure of switches S 1- , S 2-  transmits data in the backward direction. Information in a stage may be read-out non-destructively by closing a switch S 1+ , S 2-  in turn so that data is transferred from a main core to an auxiliary core in a stage and back again, an additional read-out winding U being provided, Fig. 3. This Figure shows the modifications necessary to convert the shift register of Fig. 1 to a twisted loop ring counter, the final auxiliary core K 5 <SP>1</SP> being coupled to the first main core K 1 . Additional two-phase pulses I v1 , I v2  applied to the final auxiliary core and the first main core, respectively are used for inversion of fed-back data; the pulse I v2  resetting the first main core K 1  to state " 1 " in preparation for the transfer of stored data from the final auxiliary core K 6 <SP>1</SP>, which data if a " 1 " switches core K 1  to the " 0 " state. Pulse I v1  is used similarly to rest the final auxiliary core to state " 1 " in preparation for data transfer in the reverse direction.
Patent GB-1288087-A (GB)
IPC: F16H1/28
Filed: 1969-10-22
Abstract: 1288087 Toothed gearing DEMAG AG 22 Oct 1969 [25 Nov 1968] 51792/69 Heading F2Q In epicyclic gearing comprising a floating sun gear 12 meshing planet gears 3 on a carrier 4 secured to an output shaft 7, a driving shaft 8 passes through a bore in the sun gear 12 with radial clearance, and is coupled to the sun gear by a coupling sleeve 11. The planet carrier 4 is mounted in a housing 1 by ball bearings 5, 6, and the driving shaft 8 is carried in bearings 9, 10. The coupling sleeve 11 is located axially by a radial web 14 disposed between shaft collars 8<SP>1</SP>, 13. A similar arrangement may be used for countershaft gearing.
Patent GB-1130451-A (GB)
Title: Peroxy compositions
IPC: C07C63/24
Filed: 1965-12-07
Abstract: 1,130,451. Bleaching and detergent compositions. FMC CORP. 7 Dec., 1965 [28 Dec., 1964], No. 51889/65. Heading C5D. [Also in Division D1] Peroxy bleaching compounds in aqueous bleaching and detergent solutions are activated by the addition thereto of an activator which is either (a) a mixed carboxylic acid anhydride having the formula in which R<SP>1</SP> is an aliphatic group and is derived from an aliphatic monocarboxylic acid having 2-19 carbon atoms and R<SP>2</SP> is an aromatic group and is derived from an aromatic monocarboxylic acid or an aromatic polycarboxylic acid in which none of the carboxylic acid groups are attached to adjoining carbon atoms of the aromatic ring, or (b) a mixture of an aliphatic monocarboxylic acid anhydride derived from an aliphatic monocarboxylic acid having 2-19 carbon atoms and an aromatic carboxylic acid anhydride derived from an aromatic monocarboxylic acid or an aromatic polycarboxylic acid in which none of the carboxylic acid groups are attached to adjoining carbon atoms of the aromatic ring, the activator being soluble in the aqueous bleaching solution in amounts of at least 100 p.p.m. The activator is preferably used in an amount such that one mole of anhydride is present for every atom of available oxygen. The activator may be coated with a water-soluble or dispersible coating and then mixed with a solid peroxy compound, e.g. an alkali metal perborate, percarbonate, persilicate, perphosphate or perpyrophosphate or sodium, zinc, calcium, magnesium or urea peroxide or the solid peroxy compound and the activator may be packaged separately so that they are physically out of contact with one another. The peroxy compound and activator may be incorporated into detergent compositions containing sodium tripolyphosphate, sodium carboxymethyl cellulose, anionic or nonionic surfactants and sodium silicate. The peroxy compound may also be hydrogen peroxide. The aromatic groups of the anhydrides may be substituted by chlorine, bromine, nitro, cyano or methyl groups and the aliphatic groups of the anhydrides may be substituted by chlorine, bromine, methyl, ethyl, nitro or cyano groups. Specified anhydrides are acetic-benzoic anhydride, acetic-m-chlorobenzoic anhydride, diacetic anhydride of isophthalic acid and a mixture of benzoic anhydride and acetic anhydride. When the activator is a mixture of aromatic and aliphatic anhydrides they are preferably present in substantially equal molar amounts.
Patent GB-1495952-A (GB)
Title: Apparatus for the production of wort
IPC: C12C7/14
Filed: 1974-11-29
Abstract: 1495952 Heat exchangers CENTRE DE RECHERCHES ET DE DEVELOPPEMENT TECHNIQUES PRODUITS ALIMENTAIRES DIT-TEPRAL-GROUPEMENT D'INTERET ECONOMIQUE 29 Nov 1974 [29 Nov 1973 16 Oct 1974] 51901/74 Heading F4S [Also in Divisions B1 and C6] In the production of wort, a mash of malt, grains and water is passed through a heating vessel 15, Fig. 3, from an inlet 14 upwardly through a series of cells 55 to an outlet 16, and the cells are equipped with internal heating chambers 56, 57 of triangular cross-section which are supplied separately, or in series, from one or more sources (e.g. 63 or 66) of hot fluid whereby to establish different temperature profiles along the heating vessel. The temperatures maintained at the inlet and outlet of the sections 24, 30 and 38 are typically 35-50‹ C., 50-65‹ C. and 65-80‹ C., respectively. This results in the mash undergoing a progressive increase in temperature from about 30‹ C. to about 80‹ C. over a period of an hour. Backmixing of the mash between cells may be prevented by the imposition of a screw or helix 92, Fig. 4, a non-return valve 93, Fig. 5, or blades 52, Fig. 6. The non-return valve consists of a rubber disc 94 which rests on the periphery of an electro magnet 91 and is held in position by a ring 96. A mash of grains and water including a small propertion of malt mash, e.g. 5-25% by weight, may receive a preliminary heat treatment up to about 100‹ C. in a similar heating vessel before being associated with the main mash, of malt, grains and water.
Patent GB-1187118-A (GB)
Title: Electrodeposition of Synthetic Resin Coatings
Inventor: NIEUWENHUIS WILLEM HENDRIK MAR
IPC: C09D5/44
Filed: 1967-07-06
Abstract: 1,187,118. Coating compositions. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 4 July, 1968 [6 July, 1967; 15 Nov., 1967], Nos. 31116/67 and 51940/67. Heading C3R. [Also in Division C7] A coating is electrodeposited on a metallic or other conductive object, e.g. steel sheet forming the anode in an aqueous bath of pH 6-11 containing a solution or dispersion of (a) a neutralized alkyd resin having an acid number (in the unneutralized state) 10-300 and containing an α-substituted alkanoic acid having at least 5 C atoms per molecule bound through ester groups to the resin, and (b) a formaldehyde condensate. The alkyd resin is preferably prepared in two stages by first reacting a polyol (e.g. glycerol, pentaerythritol or a polyalkylene glycol), a polycarboxylic acid and/or anhydride (e.g. phthalic anhydride with or without an aliphatic dicarboxylic acid) and a glycidyl ester of the α-substituted alkanoic acid, then further reacting the first-stage reaction product with a polycarboxylic acid anhydride, preferably using an amine esterification catalyst, e.g. a trialkylamine. The neutralized resin may be diluted with an alcoholic solvent. The α-substituted alkanoic acid used may have been obtained by the Koch method of reacting CO and water with α-olefins having at least 7 C atoms per molecule under the influence of H 2 SO 4 , H 3 PO 4 , complex compounds of H 3 PO 4  and BF 3 , or Ni carbonyl as a catalyst. The formaldehyde condensate may be a melamine resin or hexamethoxymethyl melamine. Many solvents and other reactants for the alkyd resin are specified. The bath may contain inorganic and organic pigments, e.g. TiO 2 , fillers, metal powders, particulate synthetic resins, e.g. polyethylene. Prior to neutralization, the non-neutralized alkyd resin and formaldehyde condensate may be subjected to precondensation at between 70‹ and 100‹ C. The coated object may be heated at between 80‹ and 220‹ C.
Patent GB-1195229-A (GB)
Title: Improvements in or relating to Flow Measurements
Inventor: CLAYTON COLIN GEOFFREY
IPC: G21H5/02
Filed: 1966-11-21
Abstract: 1, 195,229. Measuring fluid-flow velocity. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Nov. 13, 1967 [Nov. 21, 1966], No. 52101/66. Heading G1A. In a method of measuring the velocity of a flowing stream of fluid by injecting a radioactive tracer into the fluid and measuring its transit time between two spaced points an inte - grating ratemeter is employed to determine the instants of transit. As described the fluid is water flowing through a conduit. A fluid pulse of a radio-active isotope in aqueous solution is injected into the water at a first point and the passage of this pulse is detected by geiger counters or scintillation detectors at two spaced downstream points. The pulse becomes asymmetric and spreads out as it progresses downstream and it becomes difficult to determine the mid point of the pulse as it passes the measuring points. By feeding the outputs of the geiger counters or scintillation detectors in integrating ratemeters controlling pen recorders each mid point is the point corres - ponding to half the amplitude change in the recorded curve due to the passage of the pulse. A backing off count may be applied to each ratemeter of compensate for background radiation.
Patent GB-1254101-A (GB)
Title: Improvements in or relating to microcircuit insulation
Inventor: DAVEY NORMAN
IPC: H01B3/08
Filed: 1967-11-17
Abstract: 1,254,101. Printed circuits. NATIONAL RESEARCH DEVELOPMENT CORP. 15 Nov., 1968 [17 Nov., 1967], No. 52519/67. Heading H1R. [Also in Division C1] A plurality of insulating layers (3, 5, 7) are formed in the construction of a multilayer microelectronic circuit by (i) depositing on a substrate (1-e.g. alumina) an insulating matarial dispersed in an organic carrier liquid, the insulating material consisting of a powdered glaze and at least one particulate refractory oxide having a melting point higher than the working temperature of the glaze, (ii) removing the organic carrier by evaporation, (iii) heating the coated substrate to the working temperature of the glaze to form a glaze layer into which the refractory oxide diffuses, thereby raising the glaze softening temperature, and (iv) repeating steps (i) to (iii) until the desired number of layers are formed. Preferably the heat treatments of all the layers are at substantially the same temperature. The refractory oxide may be Al 2 O 3 , TiO 2 , BeO, ZO 2 , CaO or MgO, and preferably comprises 10-40% by weight of the insulating material. The oxide may have a particle size of 2-30Á. The dispersion may be applied by screen-printing or spraying. The glaze used preferably fuses at 600-1300 C. Conductive layers (2, 4, 6) may be applied by conventional methods using, e.g. gold metallizing paste.
Patent GB-1236988-A (GB)
Title: Constructional unit for electrical or electronic construction kits
IPC: A63H33/08
Filed: 1968-11-06
Abstract: 1,236,988. Educational appliances. R. & E. HOPT K.G. 6 Nov., 1968 [1 June, 1968; 29 Oct., 1968], No. 52661/68. Heading G5G. [Also in Divisions H1 and H2] A building block for electrical or electronic construction kits comprises a small box containing the electric or electronic component such as a resistance, which box is provided with retaining webs 4 which make a sliding connection with slots 8, 9 of an adjacent box to enable the box to be connected with further identical boxes in such a manner that contacts 15, 16 disposed on mating sides of the boxes are brought into contact with each other. A lid 3 is provided and shows a diagram of the electrical component 19 and its wiring 20. In a modification the lid may be provided with holes through which wires may be inserted into sockets in the box.
Patent GB-1141516-A (GB)
Title: Improvements in or relating to electronic distance measurement
IPC: G01S13/84
Filed: 1966-11-29
Abstract: 1,141,516. Radar. SOUTH AFRICAN INVENTIONS DEVELOPMENT CORP. 29 Nov., 1966 [14 Dec. 1965], No. 53471/66. Heading H4D. The Specification describes an improvement in secondary radars of the Tellurometer type in that, instead of varying the carrier frequency of the signal transmitted between the two antennae of the points, the distance between which is to be measured, in order that variations in the measured distance at various carrier frequencies caused by ground wave reflections may be averaged out, said carrier frequency remains constant and distance measurements are made with at least one of the antennae at various heights above the ground. The variation of the measured distance with antenna, height is shown for an actual distance of 88À57 metres in Fig. 2. Figs. 3 and 4 show that whereas the measured distance may appear to remain nearly constant for various carrier frequencies, Fig. 4, measurements for various antenna heights, Fig. 3, show large variations, indicating that, opposite to theory, the predominant wave between the antennae is the ground reflected wave.
Patent GB-1373102-A (GB)
Title: Head up display equipment
IPC: G02B27/01
Filed: 1971-11-18
Abstract: 1373102 Head-up displays GENERAL ELECTRIC CO 18 Nov 1971 [14 Dec 1970] 53704/71 Heading G2J In a head-up display system, a plate 1 in the form of a diffraction grating or zone plate is interposed between the observer and his view and light means 4 projects information on to the plate 1 to superimpose an image of that information on the view. The plate 1 may be spherically curved andthe light means 4 a cathode ray tube with a parabolic face concave to the plate 1. Preferably the plate 1 utilizes the first order diffraction which is directed to the observer as collimated light. The plate 1 may be a hologram.
Patent GB-1390213-A (GB)
Title: Absorber-crystallizer
IPC: C01D5/14
Filed: 1972-11-21
Abstract: 1390213 Combined crystallizer and classifier OLIN CORP 21 Nov 1972 [29 Dec 1971] 53773/72 Heading B1G An absorber-crystallizer for example as shown, comprises (a) a vertical cylinder 12, surmounted by a conical top 11, with at its base a frustoconical bottom 29, and a gas inlet 28, e.g. for CO 2 , in the wall of the cylinder and a gas outlet 13, in the conical top (b) external of the cylinder a group of tapered circumferential manifolds 14, 15, 16, at a level intermediate sand top and bottom with means to supply liquid to the group of manifolds (c) a group of spray headers 19 inside cylinder 12 which deliver liquid upwardly and inwardly therein and liquid-conducting means 18, between each member of the spray headers and a member of the group of manifolds, (d) a spray header in the conical section of the top arranged to direct liquid upwardly against the inner surface of the top (e) a false bottom 30, open at its ends and sealed at its upper end to the walls of the cylinder, which extends downwardly and is spaced inwardly from the frusto conical bottom and which functions to separate the crystallization zone 2 above from a classification zone 3, formed between the false bottom and the walls of the frustoconical bottom, and means e.g. a foraminous screen 32, to permit passage of liquid from the crystallization zone into the classification zone while restricting passage of oversized crystalline material and (f) means for removing liquid from the classification zone e.g. outlet 36 for removing fine entrained crystals and outlet 37 for removing mother liquor. Trough 26 immediately below the header ports serves to collect spillage while the header port is open. Access ports 27 are provided in the conical roof. The crystallization and classification zones are connected by trapezoidal linkages 24. These linkages also assist in support and guidances during assembly and disassembly of connections 18 and alignment of the spray headers 19. An example is given of the production of sodium bicarbonate by carbonization of soda ash solutions. The apparatus may also be used for producing sodium bicarbonate from CO 2  and NaOH, potassium bicarbonate from KOH and CO 2 , sodium bisulphite from sodium sulphite and SO 2 , sodium bifluoride from NaF and HF, and diammonium phosphate from phosphoric acid or monoammonium phosphate and ammonia.
Patent GB-1519150-A (GB)
Title: Lamp assembly
IPC: F21V19/00
Filed: 1974-12-14
Abstract: 1519150 Lamp assembly LUCAS ELECTRICAL Ltd 26 Nov 1975 [14 Dec 1974] 54150/74 Heading F4R [Also in Division H2] A lamp assembly, e.g. for a vehicle, comprises an apertured body 12 and an electrically insulating bulbholder 14 carrying at least one terminal 22, 23 wherein the or each terminal is in electrical contact with at least one connector 47 trapped between the terminal and the body 12. As shown, power is supplied to the connector 47 from a flexible printed circuit board 43 apertured to receive the bulbholder 14. The terminals 22, 23 (24) (Fig. 2, not shown) are held in slots in the bulbholder wall, which includes tangential arm portions 19, 20, (21), and provide a bayonet-type connector for the lamp bulb. A hooked portion 30 integral with terminal 22 provides a spring centre contact for the bulb. The bulbholder 14 is welded around the body aperture after the connectors 47, (49) have been placed across recesses in the body 12 thereby trapping each connector in contact with the respective terminal 23, (24). The body 12 may have a double enclosure with a reflective interior surface intended as a vehicle lamp, (Fig. 1, not shown).