baber/WOPTO huggingface dataset:
Patent GB-1399856-A (GB)
Title: Method of producing photochromic multifocal spectacle lenses
IPC: C03B23/22
Filed: 1973-04-16
Abstract: 1399856 Multifocal glass lenses CARL ZIESS-STIFTUNG (trading as CARL ZEISS] 16 April 1973 [2 May 1972] 42936/74 Heading C1M [Also in Division G2] Photochromic-multifocal glass lenses are produced by fusing a reading glass segment 3 to a photochromic major glass lens 1, the major lens being heated rapidly to a range of turbidity between 650 and 900 C., the reading segment being heated to a temperature below the range of turbidity, preferably below the range of heat treatment, 550 to 650 C., at which the photochromic properties of the glass are developed, the heating then being stopped, the reading segment 3 being pressed, as by a ram 2, into the hot major lens 1 to fuse them together and cooling the fused parts such that the time of the fused parts in the ranges of turbidity and heat treatment is less than the time sufficient to produce turbidity in the glass, a period of less than 10 hours, preferably 3 hours. The reading segment may be of non-photochromic glass. The major lens 1 is shaped by the convex ram 2 to a concave surface. Alternatively a concave ram may be used.
Patent GB-1474305-A (GB)
Title: Benzodiazepine derivatives
IPC: C07D243/18
Filed: 1975-10-20
Abstract: 1474305 Benzodiazepines F HOFFMANNLA ROCHE & CO AG 20 Oct 1975 [21 Oct 1974] 42981/75 Heading C2C 3S-Compounds of the general formula (R=H, C 1-6  alkyl; R 1 =H, halogen, CF 3 ) are prepared by sulphurizing the corresponding lactam. These compounds are anthelmintics, muscle relaxants, anticonvulsants and sedatives, and may be administered in the form of pharmaceutical preparations containing them in association with a carrier.
Patent GB-1320025-A (GB)
Title: Pilgrimming mills
IPC: B21B21/04
Filed: 1970-09-09
Abstract: 1320025 Rolling mills MANNESMANN AG 9 Sept 1970 [10 Sept 1969] 43094/70 Heading B3M A pilgrim rolling mill includes a stand 3 for rolling a workpiece, a link 4 connecting to workpiece to a recoil assembly which moves the workpiece to the left (in the drawing) after each rolling step. The assembly incorporates a main piston 2 which is biased to the left by compressed air, supplied by a pipe 7, in a cylinder 5. The portion 16 of the piston 2 is arranged to displace liquid from a cylinder space 6 during movement of the piston to the left, in order to apply a braking force to the piston. The liquid is forced into a cylinder 10 where it acts on the end of a differential piston 11. The upper face of the piston is acted on by the air pressure existing in the cylinder 5. During the first rolling steps on a workpiece, liquid is drawn into the space 6 from a tank 8, the liquid passing through a passage 15 and valve 14. The flow of liquid through the valve is then blocked, the braking force acting on the piston during a recoil stroke thus being determined by the load on the piston 11.
Patent GB-1390418-A (GB)
Title: Reverse osmosis process using cross-linked aromatic polyamide membranes
IPC: B01D71/56
Filed: 1972-09-18
Abstract: 1390418 Polyamide membranes USA DEPARTMENT OF INTERIOR 18 Sept 1972 [19 Oct 1971] 43131/72 Heading B5B [Also in Divisions B1 and C3] Linear aromatic polyamide asymmetric membranes are formed by casting a solution of the polymer in, e.g. dimethyl formamide, dimethylacetamide, dimethylsulphoxide, hexamethyl phosphoramide or tetramethyl urea, which may also contain calcium or lithium chloride, to a depth of 5 to 35 mils. on a glass plate, evaporating at a rate sufficient to establish a concentration gradient, and fixing the gradient by coagulation with water. The membrane may then be cross-linked by means of an aldehyde, or by irradiation, or, where the polymer contains active groups, by means of a polyfunctional cross-linking agent. Alternatively, di-siocyanates or free radical initiators may be used for cross-linking.
Patent GB-1055578-A (GB)
Title: Improvements in rotors for cell-wheel feeders
Inventor: HOWARTH PERCY
IPC: B65G53/46
Filed: 1963-11-01
Abstract: 1,055,578. Making rotary cell-wheel feeders. HENRY SIMON Ltd. Oct. 21, 1964 [Nov. 1, 1963]. No. 43176/63. Heading B3A. In a rotary cell-wheel feeder of the type for transferring granulate or particulate materials from a store to a conveying duct, or the like, two flanges 6 are secured to a shaft 6 and sheet metal channel section units 7 are welded thereto so that the upstanding adjacent channel flanges 9, 10 are abutting. The flanges 9 are slightly shorter than the flanges 10 to provide a rebate for weld fillets 11. The length of the units 7 is equal to the spacing of the outer faces of the flanges 6.
Patent GB-914556-A (GB)
Title: Article dispensing apparatus
IPC: G07F5/26
Filed: 1959-04-17
Abstract: 914,556. Coin-freed vending apparatus. NATIONAL VENDORS Inc. April 17, 1959 [May 12, 1958], No. 43367/61. Divided out of 914,555. Drawings to Specification. Class 27. The subject-matter is the same as that described in the original Specification 914,555, but the claims relate mainly to the functioning of the selector push-buttons. Specification 749,666 also is referred to.
Patent GB-1430635-A (GB)
Title: Heat treatment of non-ferrous metals and alloys
IPC: C22F1/08
Filed: 1974-10-08
Abstract: 1430635 Recrystallization heat-treatment BUSCH-JAEGER LUDENSCHEIDER METALLWERK GmbH 8 Oct 1974 [9 Oct 1973] 43632/74 Heading C7N In the bright annealing and recrystallization of a non-ferrous metal or alloy, the metal or alloy surface is coated with a synthetic resin and then heated to its recrystallization temperature. Preferred resins are phenolic, polyester, epoxy, acrylic, amino-, silicone, maleic, and ketone resins, chlorinated or cyclized rubber, and colophony resins modified with phenol. The surface, which may be of Cu, Zn or alloys, e.g. brass, containing 37% Zn, may be subsequently electro-plated, e.g. with Ni. The recrystallization temperature is in the range 200-650‹C, and the annealing may be effected in an electrical furnace.
Patent GB-1180268-A (GB)
Title: Pharmaceutically Active Phenyl-Heterocyclic-Alkanol Derivatives
Inventor: HUTTON JONATHAN
IPC: C07D263/32
Filed: 1967-09-26
Abstract: 1,180,268. Anti-inflammatory &c. compositions. IMPERIAL CHEMICAL INDUSTRIES Ltd. 23 Aug., 1968 [26 Sept., 1967], No. 43677/67. Heading A5B. [Also in Division C2] Pharmaceutical compositions having antiinflammatory analgesic and antipyretic activity comprise compounds of formula and their pharmaceutically acceptable salts, wherein Het is a thiazole, isothiazole, oxazole, isoxazole, pyrrole, thiophene, furan, pyridine or pyrimidine ring, X is H or C 1-3  alkyl or alkoxy, Y is Ph optionally mono- or di-halogenated or p-CF 3 -substituted, and Z, which is attached to a ring-position non-adjacent to Y, is CR<SP>1</SP>R<SP>2</SP>CH 2 OR<SP>3</SP>, wherein R<SP>1</SP> and R<SP>2</SP> are each H or C 1-3  alkyl, and R<SP>3</SP> is H, C 1-4  alkyl, C 1-5  alkenoyl, benzoyl, carboxybenzoyl, alkanoyloxybenzoyl, dialkylcyclohexyloxyalkanoyl (up to C 12 ), PhNHCO or Y-Het<SP>1</SP>-CR<SP>1</SP>R<SP>2</SP>CO (where Het<SP>1</SP> is methylpyridyl, methoxypyrimidyl or Het, and CR<SP>1</SP>R<SP>2</SP>CO is attached to a ring- position of Het<SP>1</SP> non-adjacent to Y), but excluding 5-(2-hydroxyethyl)-4-methyl-2-phenylthiazole, 3-(2-hydroxyethyl)-5-phenylisoxazole and 5-(2-hydroxyethyl)-4-methyl-2-phenyloxazole and their salts. The compositions, which may be administered orally, rectally, topically or by injection, may contain additionally (i) in general, aspirin, paracetamol; codeine, chloroquine, phenylbutazone, oxyphenbutazone, indomethacin, mefenamic acid, flufenamic acid, ibufenac or predrisolone, (ii) for oral administration, homatropine methyl bromide or Al (OH) 3 , and (iii) for topical application, toluzoline, adrenaline, amethocaine, copsicum, sulphoamide, neomycin, hydroxyquinoline, promethazine or methyl nicotinate.
Patent GB-943548-A (GB)
Title: Improvements in or relating to the production of thermistors
IPC: H01C7/04
Filed: 1960-12-28
Abstract: 943,548. Temperature dependent resistors. A. ARGAMAKOFF. Dec. 28, 1960 [Dec. 28, 1959], No. 44456/60. Heading H1K. [Also in Division G1] In a process for producing a thermistor of very small dimensions, e.g. a sphere with a diameter of 0.0004 in. two electrodes are arranged a small distance apart, a drop of a dispersion of a semi-conductor material is deposited on the adjacent ends of the electrodes, and the said ends and the semi-conductor material thereon are subjected to the action of a flame. As shown, Fig. 1a a wire 6 of Pt-Ir or Pt is clamped in bores 4 in the jaws 3 of tongs, the wire is tautened by manipulation of a screw 2 and cut to provide two electrodes close together. A drop 7, Fig. 1c of a semi-conductor material such as oxides of U, A1, Mg, Ti, Ni, V, ground to a fine powder and suspended in a carrier liquid such as distilled water, glycerine, or a mineral or vegetable oil, is deposited on the adjacent ends of these electrodes. When the carrier liquid has evaporated, the ends of the electrodes and the semi-conductor deposit on them are placed in a flame the temperature of which is higher than the melting-point of the semi-conductor material to fuse the latter into a spherical or oval pellet. The distance between the ends of the electrodes may be determined by a micrometer 1, Fig. la, or by measuring the resistance of the molten semi-conductor between the said ends. To avoid tensions in the recrystallized semi-conductor material, the process may be accompanied by ultra-sonic vibrations. To enable oxides having high melting-points to be used, the melting-point may be reduced by the addition of a small proportion of a different oxide, e.g. of an oxide of Fe or Ti to U0 2 . Fig. 6 shows a temperature probe comprising a metal tube 15 having at one end a Ag cap 16, to the interior wall of which a thermistor 17, made by the process of the invention, is secured by means of a glass bead; leads 18, 18<SP>1</SP> from the thermistor are soldered to conductors 19, 19<SP>1</SP>, which are supported by an insulator 20. Fig. 7 shows apparatus for manufacturing such a probe; the Ag cap is kept in contact with a heating resistor 22, and an assembly of conductors, leads and a thermistor to which the glass bead has already been attached is inserted by a ratchet and pawl device 23 into the tube 15 until the glass bead contacts the heated Ag cap and is flattened against, and fused to, it. The thickness of glass in the finished probe is determined by a meter 26 whose reading depends, inter alia, upon the resistance of the glass.
Patent GB-1040168-A (GB)
Title: High molecular weight polylactides and a process for their preparation
IPC: A61L17/12
Filed: 1964-11-03
Abstract: The invention comprises a polylactide of the formula <FORM:1040168/C3/1> where M is a divalent metal of Group II of the Periodic Table, R1 and R2 are hydrocarbon residues of 1-12 carbon atoms and d1+d2 is the degree of polymerization, which is such that the inherent viscosity is at least 0.4.  It is prepared by reacting a lactide <FORM:1040168/C3/2> of at least 90% purity with respect to hydroxy-containing compounds, with a compound of the formula MRX, where R is a 1-12 carbon atom hydrocarbon group and X is a similar group or a hydroxy, alkoxy, aryloxy, or acyloxy group, under anhydrous conditions at 20 DEG  to 200 DEG  C. The lactide is molten, or an inert solvent may be used, e.g. benzene, toluene, n-decane, or tetrahydronaphthalene.  The compound MRX may be used in an amount of 0.001 to 1 weight per cent of the lactide.  The lactide may be L(-) or D(+) or inactive, or a mixture, and may be copolymerized with other cyclic esters containing 6-8 carbon atoms in the ring, e.g. glycolide, tetramethylglycolide, sym-diethylglycolide, diphenylglycolide, 2-hydroxy-4,6,6-trimethylpeptanoic lactide, d -valerolactone, trimethylene carbonate, ethylene oxalate, propylene oxalate and disalicylide.  In Examples, L(-) lactide (containing 10% meso-lactide in Example 2) or meso-lactide (in Example 6) or a 5: 1 mixture of L(-) lactide and glycolide (Example 8) are polymerized with diethylzinc or dibutylzinc or diethylmagnesium, in the molten state or in hydrocarbon solution.
Patent GB-1068585-A (GB)
Title: Metallizing oxymethylene polymers
IPC: B32B15/08
Filed: 1963-11-13
Abstract: An adherent metallic coating is produced on an oxymethylene polymer surface by applying to the surface, e.g. by spraying, painting or dipping, a primer coating comprising a thermally decomposable organic material, e.g. nitrocellulose, cellulose acetate, polyvinyl acetate or chloride, which produces an acidic substance, e.g. HNO3, acetic acid or HCl, effecting thermal decomposition of the material in the coating, e.g. by heating coating at between 93 and 160 DEG C. for 10 to 180 minutes, and then applying a metallic coating to the treated surface, e.g. by vapour deposition, cathode sputtering, metal spraying, chemical reduction or electrodeposition.  The decomposable material may be applied in a solvent such as ethyl, iso - or n-propyl, n-butyl alcohol, ethyl acetate, methyl ethyl or isobutyl ketone, toluene and/or xylene. A catalyst such as tris-beta-chloroethyl phosphate which generates HCl to assist decomposition may be included in the primer coating, which may also contain a mineral acid e.g. nitric and/or an organic acid e.g. acetic, to assist the decomposition of the catalyst, in a solvent similar to above also including isopropyl or n-butyl acetate, 2-methyl-pentanol-4, benzene.  Additionally, the primer coating may include pigments such as Ti O2, carbon and/or iron oxide.  A fire retardant such as an organo (e.g. alkyl) borate, and a conductive powder such as bronze, brass, Cu, Ag, Ni or graphite may also be included.  The thickness of the primer coating after decomposition is preferably between 1 x 10-4 and 4 x 10-3 inch, and that of the metallic layer between 5 x 10-7 and 25 x 10-3 inch.  The latter may be deposited in two stages using similar or different methods. The polymer surface may contain oxyethylene groups distributed along the oxymethylene chains, e.g. obtained by copolymerizing trioxane with ethylene oxide or dioxolane, and stabilized by hydrolytic degradation.  Examples are given of metallizing on a baked primer coating: (a) dipping in an aqueous solution of AgCN, KCN and K2CO3, rinsing, and Cu plating in a CuSO4-H2SO4 bath followed by Ni and Cr plating; (b) sensitizing in aqueous solution of SnCl2-HCl or Sn2SO4-H2SO4-ethyl alcohol-quinol or H2SO4-KCl, activating in PdCl2-HCl solution, and chemical plating from solution of CuSO4, NiCl2, hydrazine sulphate, Rochelle salt, NaCl and Na2CO3; (c) after sensitizing and activating as above, Ni coating from an aqueous bath of NiSO4, Na citrate and acetate, Na2H2PO2, MgSO4 and an alcohol sulphate; (d) applying Ag film by immersing sensitized coating in solution of AgNO3, NH4OH, and HCHO or glyoxal and triethanolamine.
Patent GB-1366123-A (GB)
Title: Method for making carbon fibres
IPC: D01F9/21
Filed: 1971-09-29
Abstract: 1366123 Carbon fibres GENERAL ELECTRIC CO 29 Sept 1971 [2 Nov 1970] 45425/71 Heading C1A Carbon or graphite fibres are made (i) by extruding into fibres at a temperature up to 180‹ C. a polyacetylene formed by oxidative coupling of a diethynyl compound and containing recurring units of the formula -C#C-, (ii) heating the fibres to from 100‹ to 1000‹ C. for a time sufficient to effect an increase of at least 1 x 10<6> p.s.i. in the elasticity of the fibre, and (iii) heating the fibre of (ii) to a temperature of from 2000‹ to 3300‹ C. under non-oxidizing conditions whilst subjecting the fibres to a tension of from 3 x 10<3> to 1 x 10<5> p.s.i. until a stress graphitized fibre having an elasticity of at least 20 x 10<6> p.s.i. is obtained. If desired the fibre from (ii) may be carbonized before step (iii). The polyacetylene may be a terpolymer consisting essentially of combined units ofparadiethynylbenzene, meta-diethynylbenzene and organoethers having terminal ethynyl radicals or a copolymer of para- and meta-diethynylbenzene units. The fibres may be incorporated in curable organic resins and formed by pressure and hardening into moulded articles.
Patent GB-1160784-A (GB)
Title: Thermoelectric Arrangement
IPC: F25B21/02
Filed: 1967-10-05
Abstract: 1,160,784. Thermoelectric devices. SIEMENS A.G. 5 Oct., 1967 [6 Dec., l966], No. 45584/67. Heading H1K. Thermocouple limbs 1 are connected together electrically by bridges 2, 3 and are disposed between two heat exchangers, one of which comprises a flow tube 4 of a heat-conducting, resilient material such as spring steel, spring bronze or copper/zinc alloy, which is elastically deformable to allow for thermal expansion or manufacturing tolerances of the limbs 1. Inelastic heat-conducting plates 6, e.g. of Cu or Ag, may be situated between each bridge 3 and the tube 4. In the thermoelectric generator shown the warm heat exchanger comprises a large rigid tube 5 carrying several parallel axially-extending rows of thermocouples, each row having a corresponding cold exchanger 4, round its perimeter. The limbs 1 are of Si/Ge alloy, adjacent couples being joined by flexible Ag conductors. Electrically insulating, heatconducting layers 7, 9 of a ceramic such as aluminium oxide or beryllium oxide separate the bridges 2, 3 from the heat exchangers. Heat-retaining material 11 is provided around the warm ends of the limbs 1. In an alternative arrangement parallel rows of thermocouples are situated in layers spaced by alternate rigid and resilient hot and cold heat exchangers.
Patent GB-1072870-A (GB)
Title: Improvements in or relating to photodiodes and circuit assembly comprising the same
IPC: H01L27/00
Filed: 1965-10-29
Abstract: 1,072,870. Photodiodes. OLIVETTI GENERAL ELECTRIC S.p.A. Oct. 29, 1965 [Oct. 30, 1964], No. 45804/65. Heading H1K. [Also in Division G4] A diode whose resistance and/or capacitance is sensitive to light according to a threshold applied inverse voltage, comprises a semiconductor layer and a metallic layer with a dielectric layer interposed therebetween of sufficient thickness to give a tunnel or Schottky effect. It is preferred that the height of. the forbidden energy band of the semi-conductor is smaller than the energy of incident photons. A matrix of diodes for use in decoding or semipermanent memory matrices is shown in Fig. 7f, comprising polycrystalline epitaxial Si 8 having rectangular grooves coated with SiO 2 , 2, 3 and 4 with monocrystalline n-Si 9, 10 and 11 thereon and covered by a silicon dioxide layer 12. Strips of SiO 2 , 13, 14 and 15 are deposited on the layer 12 whilst strips of Al, 16 and 17 are formed by vacuum deposition. The two sets of strips together with the layer 12 constitute a diode as disclosed. The matrix is made from a block of monocrystalline N-type Si by growing SiO 2  strips 2, 3 and 4 on one surface thereof, etching between the strips with gaseous HCl or pyrocatechine and hydrazine hydrate to give grooves, coating the grooves with SiO 2 , growing an epitaxial polycrystalline Si layer in and around the grooves, and then cutting away the monocrystalline material to give insulated islands of monocrystalline material in a polycrystalline substrate (Figs. 7a to 7e, not shown). In an alternative embodiment (Fig. 8, not shown) epitaxial monocrystalline Si strips are deposited on a sapphire substrate, and overlaid with SiO 2  strips, the gaps between strips being covered with monoxide. Transverse Al strips are then deposited. The theory of the device is discussed with the aid of graphs showing the variation of energy of the conduction, valance and ferric levels of the semi-conductor, dielectric and metal layers.
Patent GB-1121829-A (GB)
Title: Apparatus for producing and utilising electrical energy for use in drilling operations
IPC: E21B47/18
Filed: 1966-10-13
Abstract: 1,121,829. Reciprocating generators. SOC. NATIONALE DES PETROLES D'AQUITAINE. 13 Oct., 1966 [14 Oct., 1965], No. 45879/66. Heading H2A. [Also in Divisions E1 and G1] The axial vibrations of a drilling tool are measured by the voltage induced in a winding attached to the tool as it moves relative to a series of magnetic poles on the housing. As shown (Fig. 1), a hollow cylindrical body 1 is secured at 2 to the lower end of a set of rods and is coupled to a hollow rod 3 carrying the drilling tool 5 by matching grooves 7, 8 which produce positive rotational coupling but allow limited relative axial movement against springs 14 and limiting shoulders 12, 13. The space between body 1 and rod 3 is filled with a fluid whose pressure is made equal to that of the fluid in the hollow rod 3 by a bellows 29. The body 1 carries a magnet assembly 17 on its internal surface, consisting of a series of ring magnets (19, Fig. 2, not shown), with alternate polarity. The corresponding portion of the outer surface of the rod 3 carries a coil winding 22, in which a voltage is induced by the axial vibration of the tool 5 and rod 3 relative to the body 1 during rotation and drilling. This voltage may be fed to a measuring system, or to a low impedance load to act as a brake, or converted to D.C. or sinusoidal A.C. to energize other local measuring equipment, e.g. strain gauges.
Patent GB-1108007-A (GB)
Title: Improvements in electric cables
Inventor: SIMMONDS GEORGE HERBERT
IPC: H01B9/06
Filed: 1965-10-29
Abstract: 1,108,007. Electric cables. BRITISH INSULATED CALLENDER'S CABLES Ltd. 28 Oct., 1966 [29 Oct., 1965], No. 45911/65. Heading H1A. In a high tension electric cable, designed to allow the easier removal of moisture and flow of oil, screening is provided by one or more helically lapped layers of conductive or semiconductive paper tape 1 metallized, 2 (e.g. by foil bonded thereon) on one or both faces. At least one surface of this composite screening tape is embossed, 5, 6, or otherwise adapted to reduce its area of contact with neighbouring insulating or conducting surfaces so that a flow of oil and moisture extraction are facilitated. The cable has at least one conducting core surrounded by a dielectric of oil-impregnated paper tapes, some or all of which may also be embossed and screening is provided on one or both surfaces of this dielectric. The composite tape may contain carbon and be bonded to an aluminium foil. Two tapes with their unmetallized surfaces in contact may be used. Dimensions of the tape and details of the embossing process are given.
Patent GB-1536087-A (GB)
Title: Water craft eg tugs
IPC: B63B35/66
Filed: 1977-11-04
Abstract: 1536087 Propelling vessels SCHOTTEL-WERFT JOSEF BECKER GmbH & CO KG 4 Nov 1977 [8 Dec 1976] 45928/77 Heading B7V A vessel has a steerable thrust generator e.g. a steerable propeller located forward of amidships and the generator is mounted on an inner support wall 17 which is raisable into and is detachably connected to an outer peripheral well wall 16 forming part of the vessel's structure. Thrust blocks 20 are located between the two walls 16, 17. The drive transmission as described includes a brake (not shown) which operates when a clutch 9 is disengaged.
Patent GB-1260069-A (GB)
Title: Improvements in or relating to insulation systems
Inventor: MILLS BONNIE EDGAR JR
IPC: F23M5/04
Filed: 1970-09-29
Abstract: 1,260,069. Thermal insulation. BABCOCK & WILCOX CO. 29 Sept., 1970, No. 46308/70. Heading F2X. [Also in Divisions F3-F4] A furnace lining includes a flexible refractory fibre blanket 14, portions of which are inserted within vertically extending generally channel section steel retainers 12, which are welded to the furnace casing walls 11A-11D and serve to anchor the blanket in position. Compressible refractory fibre wads 16 help retain the anchored portions in place. Corner retainers 12A formed from co-operating angle sections 21 are also provided, together with insulating blocks 19 and fibrous insulation 20. A single blanket extending the height and the perimeter of the furnace may be used, or a plurality of parallel blanket strips laid side by side and end to end to cover all the furnace interior (Fig. 2, not shown). In the latter case the retainers may be in staggered rows (Fig. 3, not shown). Insulating slabs may be mounted within and adjacent the webs of the retainers (Fig. 7, not shown), which may be of composite form (Fig. 9, not shown).