baber/WOPTO huggingface dataset:
Patent GB-1024751-A (GB)
Title: Recovery of uranium
IPC: G21C19/46
Filed: 1962-11-20
Abstract: Uranium is recovered from uranium-aluminium alloy fuels by dissolving in HNO3 at boiling point in the presence of mercuric ions, e.g. Hg(NO3)2, cooling the solution to ambient temperature, removing SlO2 if necessary, and extracting in countercurrent with a solution of an amine base diluted in a hydrocarbon.  The amine may be aliphatic primary (molecular weight >200), secondary (M.W. >250) or tertiary (M.W. >300), or may be secondary or tertiary aromatic-aliphatic (M.W. >250).  Examples are tri-n-octylamine and tri-n-dodecylamine. The hydrocarbon may be aliphatic or aromatic, or a mixture, e.g. solvent naphthas, and may contain 1-5% of a long-chain aliphatic alcohol. After washing with an aqueous solution of Al2(NO3)3 and HNO3, uranium ma be re-extracted in a countercurrent of 0.1 M.HNO3.  The cycle may be repeated, after addition of Al2(NO3)3, and the product aqueous solution is concentrated and filtered on silica gel.  Plutonium remains in the starting solution if a reducing agent, e.g. 10-2 M. ferrous sulphamate, is added, or it may be extracted in the IV-valent state by adding sodium nitrite (to give at least 10-2 M. nitrous acid), and then isolated in the second cycle by addition of reducing agent.
Patent GB-1411421-A (GB)
Title: Urokinaseheparin complex
IPC: A61K38/00
Filed: 1972-09-22
Abstract: 1411421 Urokinase-heparin complex CHOAY SA 22 Sept 1972 [24 Sept 1971 30 June 1972 (2)] 44003/72 Heading C3H [Also in Division A5] A complex of urokinase and heparin is prepared by admixing a solution of urokinase and a solution of heparin, adjusting the pH of the mixed solutions, e.g. with phosphoric acid, to from 1 to 5, preferably about 4.2, for formation and precipitation of the complex and, if desired, freeze-drying the complex. The complex may have typical relative activities of 30,000-100,000 CTA units of -urokinase per 100 IU of heparin. A solution for perfusion comprises the complex dissolved in a pharmaceutically acceptable, isotonic solution, e.g. 5% glucose serum, which is compatible with urokinase, does not form a precipitate with heparin and is free of mineral salts. The solutions may have urokinase concentrations of the order 300,000-900,000 CTA units/250 ml. Methods for obtaining a pyrogenic urokinase as starting material for the complex formation are described in detail. They may involve extracting crude urokinase from human urine by absorption on diatomaceous earth and elution of urokinase therefrom, elimination of viral contamination as by heating to 60C. under slightly acid conditions and cooling and separating off the solid residue, and two steps of fractionation using diethylaminoethyl cellulose employing in the first step suspensions of pH 4-6 and conductivity 15,000-25,000 micromhos/cm. with 15-40 g. of resin per 14 million CTA units of urokinase, and in the second step suspensions of pH 6-7 and conductivity 15,000-18,000 micromhos/cm. with 30-60 g. of resin per 10 million CTA units of the enzyme. The resulting urokinase-containing medium is diluted with quantities of water sufficient to lower the conductivity by about 1000 microinhos/cm. at each successive dilution until a suspension having a conductivity of about 9,000 micromhos/cm. is obtained.
Patent GB-895936-A (GB)
Title: Improved pickling of magnesium alloys
IPC: C23G1/12
Filed: 1960-12-22
Abstract: Articles of magnesium and alloys containing at least 85% of magnesium are cleaned by treatment with an aqueous solution containing glycollic acid and a nitrate of an alkali or alkaline earth metal or ammonium.  The solution preferably contains 10-40% by weight of glycollic acid and an amount of nitrate ion corresponding to 1/3 rd to 1/10 th of the weight of glycollic acid.  The nitrate may be added to the solution as such or by adding nitric acid together with a hydroxide or carbonate or metal (e.g. magnesium) to the solution. Glycollic acid may be recovered from the used solution by passing the solution through an ion exchange resin.
Patent GB-1450349-A (GB)
Title: Process for the preparation of optically active p-hydroxyphenyl glycine
IPC: C07C233/47
Filed: 1974-10-11
Abstract: 1450349 Hydroxyphenylglycine salts NIPPON KAYAKU KK 11 Oct 1974 [23 Oct 1973] 44242/74 Heading C2C The invention comprises the compounds: d - (+) - α - phenylethylamine - D - N,O - diacetyl - p - hydroxyphenylglycinate, 1 - (-). α - phenylethylamine - D - N - acetyl - pmethoxyphenylglycinate, d - (+) - α - phenylethylamine - D - N - benzoyl - p - hydroxyphenylglycinate, and d - (+ ) - α - phenylethylamino - D - N - benzoycarbonyl - p - hydroxyphenylglycinate. The invention further comprises a process for the production of optically active, α-phenylethylamine derivatives of phydroxyphenylglycine comprising reacting a racemic compound having the formula where R<SP>1</SP> is hydrogen, C 1-5  alkyl or acyl and R<SP>2</SP> is hydrogen, C 1-5  alkyl, phenyl or benzoyl with an optically active α-phenylethylamine in a solvent to form the corresponding salt, and subjecting the salt to fractional crystallization to effect optical resolution. The resulting optically active salt may be decomposed with acid or alkali to give the corresponding optically active p-hydroxyphenylglycine derivative which may be subjected to acid hydrolysis to give optically active p-hydroxyphenylglycine.
Patent GB-1072904-A (GB)
Title: Heat recovery silencer
IPC: F01N5/02
Filed: 1964-11-02
Abstract: 1,072,904. Heat exchanges. AMERICAN MACHINE & FOUNDRY CO. Nov. 2, 1964 [Nov. 26, 1963], No. 44598/64. Heading F4S. [Also in Divisions F1 and F2] An exhaust gas heat recovery silencer comprises a easing formed as two detachable parts 1, 2, having its interior space divided by a baffle 10 into two chambers interconnected only by an annular array of shroud tubes 15 (see also Fig. 6) which are either closely spaced or touch another and which extend through the baffle. The casing is connected into the exhaust gas line of an I.C. engine, furnace or other hot gas generator by way of ducts 6, 7 at each end of the casing, and heat is recovered from the gases by a liquid passing through longitudinally finned tubes 17 which extend through the shroud tubes and are joined at their opposite ends respectively to a return header 19 and a partitioned header 20 (see also Fig. 11) having inlet and outlet connections 22, 23 which extend through stuffing box glands (see also Fig. 9) in an end wall 4 of the casing. The connection 6 is elongated as shown to extend into the tube annulus thereby providing a tortuous path for the gases. Either of the connections 6 or 7 may comprise the exhaust gas inlet and similarly the liquid may enter the tubes through either of the connections 22 or 23. By removing the bolts 3 holding the casing sections together, the subassembly of tubes 15 and 17 and the baffle 10 may be withdrawn enabling relative axial movement between the tubes 15 and 17 to be effected to break up deposits of ash &c. from the gases. Such deposits may be removed by injecting air or steam and by using swabs or brushes between the fins 18 of the tubes 17.
Patent GB-937027-A (GB)
Title: Improvements in spring suspension for vehicles
IPC: B60G11/42
Filed: 1961-12-14
Abstract: 937,027. Laminated spring suspensions. A. L. NILSSON. Dec. 14, 1961 [Dec. 14, 1960], No. 44861/61. Class 108(3). A spring suspension for vehicles comprising a leaf spring 13 is characterized in that at least one end of the leaf spring is connected to the vehicle frame 1 by means of a torsion spring of the type which comprises a core element 6 of polygonal cross-section, which is surrounded by a sleeve element 4 of corresponding cross-section with the interposition of resilient rollers 5, the latter being deformed upon relative rotational movement between the two elements, and in that the leaf spring is rigidly connected to one of the elements, preferably to the sleeve element, in such a manner that it is tangential to the cylinder surface coaxial with the axis of the torsion spring. As shown in Figs 1-3 the rear end of the leaf spring 13 is connected by a link to a lever the arms 2 of which are fast with the ends of the core element 6 of the torsion spring, the sleeve element 4 being supported by a bracket 3 secured to the frame 1. The front end of the spring 13 is rigidly secured to the sleeve element 12 of a torsion spring of the same type, the sleeve element being provided with a pair of brackets for a pin 15 beneath which the corresponding end of the spring is clamped by a wedge 14. The core element is supported from the frame 1 by means of a bracket 3. In a modification both ends of the leaf spring are rigidly connected to the sleeve elements 12 as shown in Fig, 6 the resilient elements 5 allowing for any longitudinal thrust. If desired one of the torsion springs, preferably the rear spring, may be mounted on a swingable link.
Patent GB-1485264-A (GB)
Title: Calculating measuring and dispensing control apparatus
IPC: B67D7/30
Filed: 1973-09-25
Abstract: 1485264 Dispensing liquids  AVERY-HARDOLL Ltd 23 Sept 1974 [25 Sept 1973] 44950/73 Heading A4T Calculating, measuring and dispensing control apparatus in particular for petrol comprises means 14, 15 for producing electrical signals indicative of the quantity dispensed, means for producing signals indicative e.g. of unit price, integrated circuit means 24 for calculating data dependent on both signals, means 5 for pre-setting data indicative of a required value or quantity of petrol, &c., and control means responsive to the calculated and pre-set data for dispensing the required value or quantity by comparing the data. Two grades of petrol are preferably blended, grade selector buttons 16 being connected to a drive motor 20 of a blend proportioning meter 21. Dispensing may be initiated by actuating the pre-setting means 5 via a coin, note or credit card accepter 6, 7 or 2, and setting the buttons 16 to the required grade, the means 5 recording either the price or the volume of fuel to be delivered. Corresponding signals are fed to a large scale integration clip 8, and a visual indication of the data set is provided by a unit 43. As the two grades of fuel are dispensed in accordance with the setting of the meter 21, signals from respective high and low octane flowmeters 14, 15 are fed by pulse transmitters 10, 11; 12, 13 to a multiplying chip 9. Dispensing is effected under the control of the calculating circuit 23, which receives an output from the chip 9 in accordance with the output of the chip 8 and the signal producing means 14, 15. Outputs from the circuit 23, via the circuit means 24, may be employed to operate a printer 40, a cash register 46, change giving means 47 or other peripheral devices.
Patent GB-1129841-A (GB)
Title: Rotary sliding blade machine
IPC: F01L13/02
Filed: 1965-10-25
Abstract: 1,129,841. Rotary pumps and engines. SVEDIA DENTAL - INDUSTRI A. B. Oct. 25, 1965 [Oct. 23, 1964], No. 45007/65. Heading F1F. A rotary pump or engine, comprises a housing 41, Figs. 1 and 2 formed integral with a guide body 50 and centrally mounting a rotatable shaft 42 formed with an eccentric 45 which through a roller bearing 46 co-operates with a sleeve 47. The guide body 50 is formed with a plurality of radial axially-extending slots within which are slidably mounted blades 48 abutting at their inner ends the sleeve 47 and at their outer ends a cylinder barrel 49 which on rotation of the shaft 42 and gyration of the sleeve 47 gyrates within the housing with its inner peripheral surface in close proximity to the outer peripheral surface of the guide body. Operating as an I. C. engine, gaseous combustion mixture from a carburetter (not shown) enters one of a ring of inlet ports 53 which opens into a working space 54a between adjacent blades giving the largest volume. Gyration of the cylinder barrel 49 in the direction of the arrow compresses the gas which is transferred from a working space 54d of smallest volume through ducts 51 in the blades 48 and body 50 into a working space 55b between the sleeve 47 and body 50 and a pair of adjacent blades. The mixture is then ignited to gyrate the sleeve 47 which through the blades 48 gyrates the cylinder barrel. Spent gases from, e.g., working chamber 55a are expelled through ducts 52 in the blades and body and side ports 56 which may open into an exhaust manifold (not shown) before exhausting to atmosphere. The blades are preferably made from circular bar with plane parallel faces extending axially of the engine and occupy up to 50% of the working spaces of the engine.
Patent GB-1505231-A (GB)
Title: Feedhead device for mixing plastics constituents
IPC: B29C44/42
Filed: 1976-10-29
Abstract: 1505231 Mixing plastics constituents DEMAG KUNSTSTOFFTECHNIK ZWEIGNIEDERLASSUNG DER DEMAG AG 29 Oct 1976 [8 Nov 1975] 45144/76 Heading B1C A device for mixing a plurality of liquid constituents of a plastics material and feeding the mixture e.g. to a mould comprises a mixing chamber 6 opening to a sprue channel 5 through an opening 5' providing a flow restriction, the end wall 6' having the opening being convergent or inclined to the opening and the opposite end wall being the end of a piston 15 in which is slidably mounted a cleaning pin 22 slidable into the opening 5'. The piston 15 is advanced by pressure fluid supplied through line 24 and acting on a working piston 3; at the end of the forward stroke the pin 32 abuts the end wall of the cylinder 2 and opens a valve 31 to admit pressure fluid behind the piston 21 whereby the cleaning pin 22 is then advanced. The position of the cleaning pin may be monitored by a device 40. The mixing chamber 6 may be of prismatic cross-section (Fig. 2, not shown); the end wall 6' may be of truncated prismatic or truncated conical shape, and its inclination is preferably 45‹-60‹ to the axis of the sprue channel, which may be of polygonal or circular cross-section. The mixture constituents are injected by lever-controlled valves (8) through orifices 7.
Patent GB-1490746-A (GB)
Title: Method of and a system for reducing the quantities of noxious gases emitted into the atmosphere from an internal combustion engine
IPC: F02D41/14
Filed: 1974-10-18
Abstract: 1490746 Controlling air-fuel mixture ratios in IC engines NISSAN MOTOR CO Ltd 18 Oct 1974 [8 Nov 1973 21 Dec 1973] 45188/74 Heading F1B To reduce the quantity of noxious gases emitted by an I.C. engine in which the exhaust gases are fed into a thermal reactor to effect secondary combustion, a first group of combustion chambers is supplied with a relatively rich mixture and a second group with a relatively lean mixture, the mixture strength of the first group and/or the second group being controlled by a signal representative of engine load. In one embodiment, Fig. 3, the chambers are fed by a carburetter 20, the first group 1, 4 receiving extra fuel from solenoid operated injectors 24 controlled by a pulse generator 14 and a function generator 10 responsive to signals indicative of engine load from an exhaust gas temperature sensor 70 in the thermal reactor B. In a second embodiment, Fig. 4 (not shown), all the combustion chambers are fed by injectors, the injectors feeding the first group being controlled by a function generator (12) responsive to signals from an exhaust gas temperature sensor. According to a third embodiment, Fig. 5A, each group is fed by a separate carburetter 20, 20, carburetter 20 supplying a rich mixture and carburetter 20 having a solenoid operated air bleed valve or a restriction in the main jet with a solenoid controlled by-pass to provide a lean mixture, the strength of which is dependent upon engine load. In a modification, Fig. 6 (not shown), both carburetters are independently adjustable by means of solenoid valves to provide, a variation in mixture strength dependent upon engine load. A solenoid valve is also provided to supply secondary combustion air to the thermal reactor.
Patent GB-1274053-A (GB)
Title: 3-amino and 3-acylamino-isothiazoles
Inventor: BOSHAGEN HORST
IPC: C07D275/03
Filed: 1969-09-15
Abstract: 1,274,053. 3-Amino- or acylamino-isothiazoles. FARBENFABRIKEN BAYER A.G. 15 Sept., 1969 [17 Sept., 1968], No. 45340/69. Heading C2C. The invention comprises isothiazoles of the formula in which X represents hydrogen or an acyl group -COR<SP>1</SP>, where R<SP>1</SP> is an optionally substituted aliphatic, aralkyl or aryl radical, R<SP>2</SP> and R<SP>3</SP> are hydrogen or optionally substituted aliphatic, aralkyl or aryl radicals or together form an optionally substituted, saturated or unsaturated, 5-7-membered fused ring, provided that R 2  and R 3  are not both hydrogen or one is hydrogen and the other is unsubstituted aryl and when R 2  and R 3  form a fused benzene ring, that ring is substituted, and a general process for preparing the above compound, including the known isothiazoles, wherein a compound of the formula is reacted with at least 2 molar equivalents of hydroxylamine at an elevated temperature in the presence of a water-miscible solvent and, if required, hydrolysing the resultant 3-acylaminoisothiazole to the amine. The hydroxylamine is preferably used in the form of a salt from which the free base is released in the reaction mixture by the addition of a base. Examples relate to the preparation of isothiazoles, benz[4,5]isothiazoles, tetrahydrobenz[4,5]isothiazoles and 5,6- dihydro-4H-cyclopenta-[d]isothiazoles in which the optional substituents are halogen, alkyl, alkoxy or nitro groups.
Patent GB-1368602-A (GB)
Title: Manufacture of copper oxide
IPC: C01G9/02
Filed: 1970-09-24
Abstract: 1368602 Copper oxide; zinc hydroxide ALBRIGHT & WILSON Ltd 22 Sept 1971 [24 Sept 1970] 45497/70 Heading C1A [Also in Division C2] Copper oxide and/or zinc hydroxide is produced by contacting metallic copper and/or zinc respectively with oxygen and an aqueous solution of ammonia and an ammonium salt sufficient to dissolve the metal as a copper and/ or zinc ammine salt, the solution of metal ammine salt being then separated from undissolved metal and heated to precipitate copper oxide and/or zinc hydroxide. The ammonium salt may be the chloride, sulphate, carbonate or nitrate. The ammine salt solution may in the second stage have a purging gas (e.g. air or air enriched with O2) passed through to help remove NH3. The copper oxide produced may be dissolved in various acids to give salts, e.g. cupric chloride, chromate. In Example 1 Cu rings were contacted with a solution containing NH3 and NH4NO3, air being bubbled through. The resulting solution is separated off and then steam and air is passed through whereby CuO is precipitated. In Example 4 Zn sheet was used in place of the Cu rings.
Patent GB-960282-A (GB)
Title: Fastener for securing webbing to a tubular support
IPC: A47C31/04
Filed: 1961-12-19
Abstract: 960,282. Strap fastenings. UNITEDCARR FASTENER CORPORATION. Dec. 19, 1961 [Dec. 30, 1960], No. 45513/61. Heading A4M. A fastener 10 for securing webbing to a tubular support 38 comprises a curved base plate 12 round which the webbing 30 is wrapped, and from whose concave face projects normally a hollow prong 24 for piercing the webbing as in Fig. 4 and for insertion into an aperture 36 which is engaged over its inner edge by a shoulder 27 which secures the fastener to the support. An awl 34 is pushed through the fold of the webbing 32 and through the prong 24 so that its point 35 engages aperture 36; the awl is then used as a lever to tension the webbing and to pass the prong into the aperture where it locks. Serrations 22 in the longitudinal edge 20 of the fastener engage portion 40 of the webbing and prevent slipping. The webbing may be of synthetic plastic material such as polypropylene.
Patent GB-1451854-A (GB)
Title: Bearing assemblies for bridges and like structures
IPC: E01D19/04
Filed: 1974-10-17
Abstract: 1451854 Deformable mountings for bridge bearings; bearings GUTEHOFFNUNGSHUTTE STERKRADE AG 17 Oct 1974 [26 Oct 1973] 45576/74 Headings F2A and F2S A deformable mounting for a bearing for bridges comprises a housing base 2 carrying a deformable pressure cushion 1 confined peripherally by a housing ring 6, the housing ring 6 being spaced vertically from a peripheral flange 19 of the base and the gap being sealed by a foamed elastomer layer 18, and the housing ring 6 also being spaced from a vertical surface of the base 2 by a vertically extending gap 14 containing a guide or centering ring 17 of plastics material, and a cover plate 10 of low friction plastics material covering the upper face of the pressure cushion and being engaged at its periphery in a recess in the housing ring 6. The cushion 1 may be of elastomer, and may be elastically or plastically deformable. A shoulder 13 on the housing ring 6 ensures that the base of the cushion is larger than its upper surface. The guide or centering ring 17 is made of carbon-filled PTFE. The gap 14 is sealed by a seal ring 11 embedded in the cushion 1. The foamed elastomer layer 18 is not required to withstand pressure. A bearing plate 3 carries a slide plate of austenitic steel which rests on the cover plate 10, which is made of PTFE and has grooves or recesses 5 for lubricant. Tilting loads are accommodated by rocking of the ring 6 on the base 2.
Patent GB-1275935-A (GB)
Title: Analog-to-digital converter
Inventor: KAVALEROV GENY IVANOVICH
IPC: G06J1/00
Filed: 1969-09-17
Abstract: 1275935 Analogue/digital converters G I KAVALEROV V M NECHUIKIN V V OSTROVERKHOV A V PETROV and E P TIKHONOV 17 Sept 1969 45794/69 Heading G4H An input signal U t  is digitized at intervals determined by the quantization interval # stored in an accumulator, this interval being shortened or lengthened in dependence on whether the difference #U between the input U t  and an analogue signal # computed from the previous digital signal is greater than or less than a preset allowable error #U 0 . As described, the quantization interval after n+1 samples is given by # n+1 =# n +#t sign (#U - #U 0 ), where #t is a fixed increment. The same comparison circuit is used (a) for the analogue-to-digital conversion, (b) for the comparison of the input signal with the reconstituted signal # and (c) the comparison between the difference #U between the input signal and the reconstituted signal and the preset value #U 0 .
Patent GB-1501100-A (GB)
Title: Testing printed circuit boards
IPC: G01R31/28
Filed: 1975-10-17
Abstract: 1501100 Testing printed circuit boards FERRANTI Ltd 17 Oct 1975 [23 Oct 1974] 46886/74 Heading G1U A method of testing a printed circuit board including a number of integrated circuits interconnected by conductive tracks comprises, applying a constant current insufficient to damage any integrated circuit to a selected point on one of the conductive tracks inter-connecting, through a common point, a suspect group of integrated circuits and measuring voltage drops along the tracks from the selected position. To confirm a fault in a particular integrated circuit, the selected position may be changed.
Patent GB-1363489-A (GB)
Title: Waterlaid nonwoven web material incorporating man-made staple fibres
IPC: D04H1/42
Filed: 1971-10-08
Abstract: 1363489 Non - woven fabric DEXTER CORP 8 Oct 1971 [29 Oct 1970] 46966/71 Heading D2B A waterlaid non woven fabric having substantially uniform entanglement-free fibre distribution is made from crimped man-made staple fibres having a length of at least ¥ inch and a denier of up to 6 dpf. The man-made fibres may be made of regenerated cellulose e.g. viscose rayon, cellulose ester e.g. cellulose acetate, polyamide, polyester, vinyl polymers e.g. polyvinyl alcohol, acrylic polymers, or polyolefins. Uncrimped papermaking fibres may be incorporated in the fabric. The fabric may be formed by wet-laying a dispersion of the fibres in a medium having a viscosity of 15-90cp. The latter may be an aqueous solution of an acrylamide polymer.