baber/WOPTO huggingface dataset:
Patent GB-1400870-A (GB)
Title: Rotary piston internal combustion engine
IPC: F02B53/00
Filed: 1972-10-05
Abstract: 1400870 Rotary internal-combustion engine DAIMLER-BENZ AG 5 Oct 1972 [7 Oct 1971] 45992/72 Heading F1F A rotary internal-combustion engine comprises a housing having a side wall 1 and a peripheral wall part 2, the peripheral part having an annular groove 5 in which an annular gas seal 6 surrounds an annular liquid seal 7, said seals contacting the face of the side wall 1 and sealingly surrounding a lubrication passage 4 extending through the housing parts. The seals may be located in separate grooves in the same wall part or one groove may be located in one wall part and the other in the other wall part Figs. 2 and 3 (not shown). The gas seal may be located in co-operating grooves in the two wall parts, the liquid seal being held in the peripheral wall Fig. 4 (not shown). The gas seal may alternatively be urged against the side wall by a resilient member in the base of groove in the peripheral wall Figs. 5 to 7 (not shown). The seal 6 may be made of resilient metallic material such as copper and the seal 7 formed by an O-ring of rubber or plastics. In every case the gas seal protects the liquid seal from wear by combustion gases.
Patent GB-1020537-A (GB)
Title: Rotary piston machines
IPC: F01C19/02
Filed: 1962-12-10
Abstract: 1,020,537. Rotary engines, pumps and compressors. NSU MOTORENWERKE A.G. & WANKEL G.m.b.H. Dec. 10, 1962 [Dec. 9, 1961], No. 46540/62. Heading F1F. In a rotary-piston I.C. engine of the trochoidal n and n+1 lobe type, a radial sealing-strip 28 (Fig. 2, not shown) is lodged in a groove 26 at each apex 12 of the piston 10 and a shoe 30 is pivotally mounted in a recess 34 adjacent each strip, one end of the shoe being in sliding contact with the inner peripheralsurface 4 of the engine housing. The strip is biased outwardly by a spring 46 located in an intermediate sealing-body 34 which is situated between lateral sealing-strips 22 on each end face of the piston. Clearance is provided between strip 28 and slot 26 to give gas access to the under side of the strip. Gas enters slot 26 through holes 48 in the shoe (Fig. 3, not shown) or wedge-shaped gaps between end walls 1, 2 of the housing and tapered lateral-edges 31 on the shoe, the shoe being pressed outwardly by a leaf spring 61 and gas pressure exerted on its outer end when the pressure in a working space B exceeds that in an adjacent working space C. The shoe may be modified (Fig. 5, not shown) in that it is pivotally attached to the piston by screws 56. Alternatively, the shoe may be made of flexible material (Figs. 6, 7, not shown) e.g. spring steel, one end of the shoe being attached to the piston by screws (not shown) or lugs 60, 62 lodged in grooves 64, 66. The shoe may be provided with two lobes or crests 68 (Fig. 8, not shown) which slide on the surface 4, or the shoe may comprise two parts 65<SP>1</SP>, 67<SP>1</SP> (Fig. 9, not shown) made of rigid material and pivotally attached to one another. The part of the shoe which is in contact with the sealing strip may be of part-spherical shape (Fig. 4, not shown). The invention is applicable to other kinds of rotary-piston machines e.g. pumps or compressors.
Patent GB-1237858-A (GB)
Title: Process for the production of adenine
Inventor: YAMADA YOSHITAKA
IPC: C07D473/00
Filed: 1969-09-22
Abstract: 1,237,858. Adenine and 4,5-dicyanoimidazole. AJINOMOTO CO. Inc. 22 Sept., 1969 [5 Oct., 1968], No. 46677/69. Addition to 1,010,256. Heading C2C. Adenine is prepared by heating HCN, or a mixture of an alkali metal cyanide with a substantially equivalent amount of the ammonium salt of an acid stronger than HCN, in liquid ammonia in the presence of a carboxylic acid, having at least 3 carbon atoms, which is soluble in liquid ammonia, or the ammonium salt of said carboxylic acid, the quantity of water, if any, present in the reaction system being not greater than 10 mole per cent of the total reaction system. The temperature of the reaction is 60-200‹ C., preferably from 70-150‹ C., employing from 1-10 moles liquid ammonia/ mole HCN or alkali metal cyanide, and suitable carboxylic acids are those of pK a  between 4À0 and 5À1, e.g. propionic, butyric, isobutyric, valeric, trimethylacetic, cyclohexanecarboxylic, lactic, glycollic, valeric, aspartic, glutamic, benzoic, -methylbenzoic, o-, m- and p-aminobenzoic, m- and p-hydroxybenzoic, and phenylacetic acid. 4,5-Dicyano-imidazole is obtained as a by-product, which is separated, e.g. by selective extraction, absorption on a weakly basic anion exchange resin, or by formation of a water-insoluble salt, e.g. with lead or mercury.
Patent GB-1276425-A (GB)
Title: Prosthetic device
IPC: A61L27/08
Filed: 1970-10-01
Abstract: 1276425 Prosthetic device GULF OIL CORP 1 Oct 1970 [6 Oct 1969] 46759/70 Heading A5R A prosthetic device comprises a rod enclosed in a sleeve so proportioned that the combination has a modulus of elasticity similar to that of living bone, i.e. between 2 x 10<SP>6</SP> psi and 4 x 10<SP>6</SP> psi. The rod is made of a stainless alloy such as titanium alloy, stainless steel or more usually a cobalt-chromium alloy. The sleeve, which is bonded or friction fitted to the rod, is made of on of a range of biocompatable carbonaceous materials having a low modulus of elasticity, such as polycrystalline graphite. In Fig. 3 head 27 of the rod 25 is usually conical and the opposite end 29 may be threaded and be provided with a lock nut 31 for prestressing the sleeve. In one modification (Fig. 4) prestressing is produced by direct engagement of front and rear sections, (45) and (46); of the rod. In Fig. 5 the device comprises a frusto-conical sleeve 61, a rod 63 and a nut 67 and is attached to an artificial hip joint.
Patent GB-1326789-A (GB)
Title: Photoconductive compositions
IPC: G03G5/09
Filed: 1970-10-01
Abstract: 1326789 Photoconductive composition EASTMAN KODAK CO 1 Oct 1970 [3 Oct 1969] 46824/70 Heading H1K A photoconductive composition comprising a photoconductor and a sensitizing dye of formula wherein Q 2  represents the atoms necessary to complete a heterocyclic ring having 5 or 6 atoms in the nucleus; R 1  and R 2  are alkyl, COR 5 , H, aryl or heterocyclic or together the atoms necessary to complete a heterocyolic ring: R 5  is alkyl, aryl, alkoxy, amino or heterocyclic; R, and R 8  are H, alkyl or aryl; m is 1 or 2 and L is a methine group. In the specific embodiment a support of polyethylene terephthalate having an organic conducting coating thereon is coated with a mixture of 3-[-(1-N-methylaniline-4,6-dip - tolyl - 2(1H) - pyridylene) - ethylidene] - 2H- pyrido [1,2-a] pyrinridine-2,4-(3H) dione as sensitizer; poly(vinyl-m-bromobenzoate-co-vinyl acetate) or poly (4,41-isopropylidene-bisphenylene oxyethylene-co-ethylene isophthalate) as binder and 3(4-diphenyl aminophenyl) propionic acid or methyl proprionate, 4-carboxy triphenylamine or bis-4-diethylamino tetraphenylmethane. Many other supports, sensitizers, binders and photoconductors are specified. The dye sensitizer may be bleached by exposure to intense light.
Patent GB-983799-A (GB)
Title: Diazotype materials
IPC: G03C1/60
Filed: 1962-12-14
Abstract: 983,799. Heat-developable diazotype paper. CHEMISCHE FABRIEK L. VAN DER GRINTEN N.V. Dec. 14,1962 [Dec. 21,1961],No. 47343/62. Heading G2C. Heat-developable two component diazotype paper comprises a paper support having a water content of 2 to 7% by weight and carrying (a) a lightsensitive layer which contains a diazonium compound, an azo coupling component, and acid reacting compound and 1 to 6 g/m<SP>2</SP> of a finely divided thermoplastic polymer of an olefinically unsaturated monomer having a terminal methylene group which polymer dissolves or swells in a solvent for polyvinylacetate (the fine division being achieved by application from an aqueous dispersion) (b) a thin hydrophobic thermoplastic film  layer comprising a polymer of a monomer having a terminal methylene group or a hydrophobic cellulose derivative and (c) a light-transmitting layer containing a filler and an acid-neutralising organic material melting below 100‹C. and selected from substantially non-volatile non-aromatic amines and their salts with weak acids. Layer (b) acts as a barrier layer at normal temperatures but transmits the amine on heating. The paper may be developed by heating below 120‹C. or by conventional ammonia vapour development, preferably from the paper side. Polyvinyl acetate of molecular weight above 500, 000 is preferred in layer (b) but numerous other polymers and cellulose derivatives are listed. Several examples are given of each of the compounds used and 14 specific examples are provided of its preparation of papers according to the invention. Specification 815,005 is referred to.
Patent GB-1205685-A (GB)
Title: Improvements relating to a battery charging supervisory device
IPC: H02J7/14
Filed: 1968-10-07
Abstract: 1,205,685. Battery charging systems for vehicles. NIPPON DENSO K.K. 7 Oct., 1968 [5 Oct, 1967], No. 47360/68. Heading H2H. In order to provide an indication of the charging of a battery 19 by a generator 11 of a vehicle, an indicating device, such as a lamp 29, is connected in series with a positive temperature coefficient resistor 27 across the battery the resistor being connected to the generator and to the battery by decoupling elements. Closure of an ignition switch 22 connects the lamp 29 and resistor 27 so that current flows therethrough from the battery 19 by way of a diode 28 forming a decoupling element. This current is insufficient to heat the resistor 27 to any appreciable extent and the lamp 29 is brightly illuminated. When the engine of the vehicle is started and the alternator 11 produces an output to charge the battery 19 a heavy current flows through the resistor 27 from the alternator 11 by way of a diode 25 forming a further decoupling element. The concomitant increase in temperature of the resistor then raises its resistance such that the current through the lamp 29 is insufficient to maintain the illumination thereof. In a second embodiment a normal resistor and a capacitor are each connected in parallel with the resistor 27 to enhance the operation of the lamp 29.
Patent GB-1485677-A (GB)
Title: Retrofocus-type wide angle lens system
IPC: G02B13/04
Filed: 1975-11-18
Abstract: 1485677 Wide-angle lenses ASAHI KOGAKU KOGYO KK 18 Nov 1975 [18 Nov 1974] 47382/75 Heading G2J A retrofocus wide-angle lens comprises a first negative group L 1  -L 3  and a second positive group L 4 -L 7 . The first group comprises a negative meniscus L 1  concave to the image; a positive lens L 2  and another negative meniscus L 3  also concave to the image. The second group comprises a positive lens L 4 ; a negative lens L 5  ; a positive meniscus L 6  and a positive lens L 7 . These conditions are satisfied:- (1) F/0.3 < F 1.2  < F/0.05 (2) F/1.2<|F 1.2.3  |< F/0.9, F 1.2.3  < O (3) F/0.85< F 1.2.3.4  < F/0.5 (4) 0À5 F < r 7  < 0À9 F  (5) 0À4F<d 1 +d 2 +d 3 +d 4 +d 5 +d 6 <0À8F (6) F < r 10  < 2F (7) 0À4 F < d 7 +d 8 +d 9  < 0À8F, where the symbols have their usual meanings. Numerical data are given for one Example. Lens L 5  may be made of potassium nitrate.
Patent GB-1084524-A (GB)
Title: Non-hygroscopic ammonium phosphate
Inventor: YOUNG DONALD CLIFFORD
IPC: C01B25/40
Filed: 1964-11-20
Abstract: This Specification relates to a modification of the non-hydroscopic ammonium phosphate claimed in claim 1 of Specification 997,933, wherein in the ammonium phosphate there is a weight ratio of nitrogen to phosphorus (expressed as P2O5) of from 0.14:1 up to, but not including, 0.25:1. The ammonium phosphate is prepared from wet process phosphoric acid, which is heated to expel water and volatile impurities, concentrated, preferably by heating, until its calculated mole ratio of water to P2O5 is 2.0 to 3.5, the resulting anhydrous acid being neutralized with a quantity of ammonia sufficient to form solid ammonium phosphate having the desired nitrogen to phosphorus weight ratio.  Ammoniation techniques are as detailed in the parent application.  Additional ammoniation techniques at lower temperatures involve dissolving or dispersing the anhydrous acid in an organic reaction medium, e.g. a low boiling hydrocarbon, introducing ammonia to neutralize the acid and separating the solid ammonium phosphate. Anhydrous ammoniation can also be achieved by adding the anhydrous acid to liquid ammonia while the latter is under liquefaction pressure.
Patent GB-1404553-A (GB)
Title: Fish feeds
IPC: A23K1/16
Filed: 1973-10-11
Abstract: 1404553 Fish feed F HOFFMANN-LA ROCHE & CO AG 11 Oct 1973 [12 Oct 1972] 47527/73 Heading A5B A fish feed contains a potentiated, antibacterially active sulphonamide, said sulphonamide being a pyrimidine, pyrazine or isoxazole derivative and the potentiator being a 2, 4-diamino-5-benzyl-pyrimidine of the formula: wherein R<SP>1</SP> represents a hydrogen atom or a C 1-6  alkyl group and R<SP>2</SP> represents a phenyl group which carries one or more C 1-6  alkyl, C 1-6  alkoxy, methylene dioxy, amino, nitro, trifluoromethyl, hydroxy and/or halogen substituents. Preferred combinations of sulphonamide and potentiator are 2, 4-dimethoxy-6- sulphanilamido-pyrimidine and 2, 4-diamino-5- (3, 4, 5-trimethoxy benzyl)-pyrimidine, and 4, 5-dimethyl-3-sulphanilamido-isoxazole and 2, 4-diamino-5-(3, 4, 5-trimethoxybenzyl)-pyrimidine.
Patent GB-1040308-A (GB)
Title: Manufacture of 1-cyano-1, 3-butadiene
Inventor: LAMBERT ARTHUR
IPC: B01J23/16
Filed: 1964-11-24
Abstract: A process for producing 1-cyano-1,3-butadiene comprises catalytically dehydrogenating in the vapour phase a cyanobutene at elevated temperatures.  The process is applicable to all isomeric cyanobutenes, but preferred is 1-cyanobutene-2. The catalyst may be any known in the art as being suitable for dehydrogenation; preferred catalysts are bismuth phosphomolybdate supported on silica, mixed ZnO/CuO modified by, e.g. up to 2% by weight of a sodium compound, and cobalt molybdate supported on alumina.  The ZnO/CuO catalyst is preferably in a pelleted form, pelleted, e.g. by the aid of graphite. The dehydrogenation is preferably conducted by leading the gaseous cyanobutenes over the catalyst, preferably mixed with an inert diluent gas such as air or nitrogen, and using a contact time of 1-10 seconds.  The temperature is preferably between 300-550 DEG  C., particularly 350-450 DEG  C.
Patent GB-1441633-A (GB)
Title: Device for varying the vertical separation and the relative longi tudinal inclination of the sitting surfaces of seats
IPC: A47C3/36
Filed: 1973-10-12
Abstract: 1441633 Adjustable seats G GRAMMER [trading as W GRAMMER] 12 Oct 1973 [9 Feb 1973]  47852/73 Heading A4J [Also in Divisions B8 and F2] A seat support 4 which is adjustable in height or inclination is connected to a base plate 3 by two pairs of levers 8 movable about their pivotal connections 7 with the base plate by a rod 14 provided with opposite hand screw threads 15, 16 engaging the pairs of levers, the height of the seat support being adjusted by rotation of the rod with no axial displacement and the inclination of the seat support being adjusted by axial displacement of the rod with no rotation. In a second embodiment a double acting piston and cylinder unit may replace the screw thread rod 14.
Patent GB-1150533-A (GB)
Title: Improvements in or relating to Hydraulic Pumps with Pistons, of the Type having a Cylinder Block
IPC: F04B1/12
Filed: 1967-10-20
Abstract: 1,150,533. Reciprocating pumps. SOC. HISPANO-SUIZA-LALLEMANT. Oct. 20, 1967 [Oct.26, 1966], No.47911/67. Heading F1A. An axial piston pump comprises a stationary cylinder block 5 with bucket pistons 3 reciprocated by a swash-plate member 17 supported by bearings 20 in a drive-shaft member 21, liquid entering the cylinders from the pump casing via piston ports 52 controlled by sleeves 49 slidable on the pistons between abutments 47, 50, and the liquid being delivered through lift valves 12 to a common outlet 9, delivery being regulated by a by-pass valve 13 having a groove 15, Fig.3, controlling by-pass ports 16 in the cylinders. The valve 13 is rotated by the drive-shaft 2 through a rod 29 and a ball and spline coupling 33 to 35, axial movement of the valve being effected manually or by a servopiston 40 responsive to the pump delivery pressure. The groove 15 is located such that in the left hand position of the valve 13, all of the cylinders on the delivery stroke are by-passed to the pump casing via groove 15 and valve ports 36. In the right-hand position of the valve, as shown in Fig.1, none of the cylinders is by-passed.
Patent GB-1498204-A (GB)
Title: Silylation process
IPC: C07F7/18
Filed: 1975-11-21
Abstract: 1498204 Silylating organic hydroxy and amino compounds DOW CORNING Ltd 12 Nov 1976 [21 Nov 1975] 47916/75 Heading C3S Organic compounds having at least one -OH and or -NH- group attached to carbon are silylated by contacting them simultaneously with (i) a silazane (R 3 Si) 2  NH and/or silylamine R 3 SiNR<SP>1</SP> 2 , wherein R is a C 1-8  hydrocarbyl radical and R<SP>1</SP> is H or a C 1-8  alkyl radical, and (ii) a silyl sulphate (R 3 Si) 2 SO 4 . Preferably (i) is in molar excess of (ii): a 2 : 1 molar ratio will be approximately neutral. In the examples butanol, benzoic acid, 2 : 6-di-sec-butyl-phenol, penicillin G and 2-imidazolidinone were mixed, with or without subsequent heating, with (Me 3 Si) 2 NH or Me 3 SiNEt 2  and (Me 3 Si) 2 SO 4 , the molar ratio of substrate to silicon compounds being 2 : 1 or 1 : 1 using (Me 3 Si) 2 NH and 3 : 1 using Me 3 SiNEt 2 , and of (i) : (ii) being 2 : 1, or in later examples up to 1000 : 1.
Patent GB-1409047-A (GB)
Title: Chromone derivatives
IPC: C07D311/24
Filed: 1971-10-16
Abstract: 1409047 Chromone derivatives BEECHAM GROUP Ltd 2 Oct 1972 [16 Oct 1971] 48213/71 Heading C2C The invention comprises compounds of formula and esters and pharmaceutically acceptable salts thereof, wherein B is a straight or branched chain (C 2-10 ) alkyl group or a 2-hydroxy-1,4- phenylene group. These compounds may be prepared by reacting the acid chloride of 2- carboxychromone with a stoichiometric excess of tertiary butyl ester of the appropriate amino acid, followed by deesterification of the resultant tertiary butyl ester of the N-2-(chromonyl)- amino acid. The invention also comprises a pharmaceutical composition comprising a compound according to the invention together with a pharmaceuticaally acceptable carrier.
Patent GB-1020098-A (GB)
Title: Process for the production of smokeless briquettes
IPC: C10L5/04
Filed: 1963-12-06
Abstract: In a process of making smokeless briquettes similar to that described in Specification 1,002,654, the pre-oxidizing step and the thermal oxidation step are performed simultaneously in a turbulent carrier bed, e.g. of sand, in a chamber, while causing the coal to be in turbulent state about the briquettes by feeding the necessary oxygen through the bed in the form of a mixture of air and flue gas.  The coal in the form of slack, and the briquettes, are fed to and withdrawn from the chamber continuously. The sand bed should be maintained at 200 DEG  to 400 DEG  C., preferably 240 DEG  to 360 DEG C., and the treatment time is 1 to 6 hours depending on the temperature.  The chamber may have a fixed or movable porous floor, and the sand bed is made turbulent by a rising current of hot gas, as e.g. in a conventional sand bed furnace.
Patent GB-1365024-A (GB)
Title: Dental impression material
IPC: A61K6/90
Filed: 1972-10-23
Abstract: 1365024 Dental impression material MARRICKVILLE HOLDINGS Ltd 23 Oct 1972 [28 Oct 1971] 48701/72 Headings C3U and C3N A composition for taking dental impressions comprises (1) an alkali metal alginate, (2) pure synthetic calcium sulphate which is a mixture of calcium sulphate dihydrate and calcium sulphate hemihydrate, (3) sodium silicofluoride, (4) sodium meta silicate or tetra sodium pyrophosphate or a mixture thereof and as a filler (5) finely powdered diatomaceous earth. The composition may also contain sodium fluoride, zinc fluoride and magnesium oxide. The preferred alginate is potassium alginate. The composition may be prepared by mixing all the specified materials apart from the diatomaceous earth by grinding in a ball mill and then blending the ground materials with the diatomaceous earth in a ribbon type mixer.
Patent GB-1267724-A (GB)
Title: Improvements in or relating to the manufacture of structural elements
Inventor: DARGIE ROBERT GEORGE
IPC: E04C2/26
Filed: 1969-10-06
Abstract: 1,267,724. Structural laminate. R. G. DARGIE. 6 Oct., 1969, No. 49034/69. Heading B5N. [Also in Division E1]  A structural element comprises a core 12 of structurally weak material, e.g. aerated concrete which is encapsulated by a layer 14 of sheet material, e.g. of fibreglass, applied thereto by means of a polymeric bonding material, e.g. a thermoset polyester resin, the core having a peripheral rebate 16, the sheet material being bonded as a complete covering layer to each face of the rebate. In a preferred embodiment. the layer of sheet material comprises at least two separate pieces of material the edges of which overlap in the rebate and are bonded together.
Patent GB-1123222-A (GB)
Title: Improvements in or relating to the manufacture of flat glass
Inventor: ROBINSON ALBERT SIDNEY
IPC: C03B18/18
Filed: 1965-11-19
Abstract: In the 'float' process for the manufacture of flat glass improved temperature control of the molten glass supported on the bath of molten metal is achieved by controlling the transverse temperature distribution across the bath in a region of the bath where the glass is molten, by inducing transverse flows of molten metal from the centre towards the sides of the bath, said transverse flows of molten metal then being diverted downstream of the bath by the side walls of the tank structure, the resulting flow pattern consisting of two loops extending downstream of the bath.  The establishment of closed circulation loops is enhanced by segregating that region of the bath from the rest of the bath, by having a transverse barrier of the type disclosed in Specification 1,123,223, located at the downstream end of the region of the bath supporting the molten glass and by baffle surfaces projecting inwardly into the bath from the tank side walls just upstream of the means causing the transverse flows of molten metal, such segregation preventing molten metal from the cooler parts of the bath entering the region. The enforced circulation of molten metal may be produced in any known manner such as paddle wheels partially immersed in the molten metal, but preferably a pair of linear induction motors is used.
Patent GB-1494483-A (GB)
Title: Process for making steel ingots
IPC: B22D27/20
Filed: 1974-11-15
Abstract: 1494483 Semi-killing and killing of ingots SACILOR-ACIERIES ET LAMINOIRS DE LORRAINE 15 Nov 1974 [22 Nov 1973] 49534/74 Heading B3F [Also in Division C7] In a process for producing a steel ingot, unkilled or semi-killed steel is poured into the ingot mould, a deoxidizing agent is added to the steel (e.g. Al or Si) a predetermined time after pouring and at least after the addition of the deoxidizer gas, e.g. argon is injected into the steel to homogenize the steel and deoxidizer, the gas injection being carried out for a period of time in minutes equal to at least half the height of the ingot in metres. The process produces an ingot having a skin of the composition of the poured steel and a centre of either semi-killed or killed steel. In disclosed examples, Si may be used to semikill the steel in the ladle with Al used in the mould, or Si in the form of Fe-Si may be used in the mould, and steel semi-killed by Si in the ladle is killed by successive additives of Al, a fluorspar-sodium carbonate mix, and FeSi. The oxygen content of the centre of the ingot may be as low as 0À0032% by weight. The injected gas may be air, N 2  or Ar.