baber/WOPTO huggingface dataset:
Patent GB-1456457-A (GB)
Title: Method of prolonging the activity of organic extracting agents
IPC: G21C19/46
Filed: 1974-11-22
Abstract: 1456457 Reprocessing nuclear fuel KERNFORSCHUNG mbH GES FUR 22 Nov 1974 [24 Nov 1973] 50626/74 Heading G6R A mixture of an organophosphoric acid ester and a hydrocarbon, which has been used in the processing of spent nuclear fuel, is purified by bringing the mixture into contact with a quadrivalent lead compound. A mixture of tributyl phosphate and an alkane may be contacted with lead dioxide or lead tetra-acetate, for example by passing the mixture through a column heated to 50‹ C. and containing a mixture of silica gel and lead dioxide. A preliminary treatment may comprise washing with sodium carbonate solution and equilibration with nitric acid. Tests are described in which the treated organic mixture is contacted with a nitric acid solution containing radioactive Zr or Hf.
Patent GB-1176870-A (GB)
Title: Motor Control System.
Inventor: KILLORAN BRIAN
IPC: G05D3/18
Filed: 1967-11-07
Abstract: 1,176,870. Control of A.C. motors. ENGLISH ELECTRIC CO. Ltd. 5 Nov., 1968 [7 Nov., 1967], No. 50652/67. Heading H2J. A three-phase A.C. motor 10 is rotated in one direction or the other to maintain its shaft in a desired angular position by means of the circuit shown, in which the terminals 11, 12, 13 of the delta-connected motor windings W1, W2, W3 are connected to the terminals 16, 18 of a single phase A.C. supply 17, the terminals 11, 12 being shunted by a resistorcapacitor circuit R1, C1 and being connected to the terminal 16 through triacs 14, 15, one or other of which is fired when rotation of the motor in a particular direction is required. The triacs 14, 15 are respectively controlled by oscillators 20, 21 whose frequency is much greater than the frequency of the supply 17. These oscillators are controlled by a signal from an amplifier 28 representative of the error between the desired and sensed shaft positions and of the speed of the motor. To this end a gear-box 24 and position sensing device 25 supply an " actual shaft position " signal to a comparator also supplied with a reference position signal 23, the output of the comparator being fed to an amplifier 26 whose output is combined with a signal from a tachogenerator 27 responsive to the motor speed, the combined signal then being fed to the amplifier 28. It is stated that the invention may be applied to a motor with star-connected windings.
Patent GB-1322562-A (GB)
Title: Vehicle suspension units and suspension level control circuitry associated therewith
IPC: B60G17/015
Filed: 1970-10-26
Abstract: 1322562 Controlling suspension height HOESCH AG 26 Oct 1970 [5 Nov 1969] 50690/70 Heading B7D [Also in Division F2] A pneumatic or hydropneumatic suspension unit for a vehicle comprises a piston 3 displaceable in a cylinder 4, and level sensing means which are disposed in the unit for controlling supply of pressure fluid thereto from an external source and are responsive to a magnetic field which is created within the unit and influences the sensing means in dependence on the position of the piston 3 in the cylinder 4. As shown a permanent magnet 2 which is spaced a constant distance from a magnetoresistive element 1 when the piston 3 moves within a predetermined range is brought into contact with the element 1 when the unit contracts beyond that range and is moved further away from the element 1 when the unit expands. A resistance 48 located in the unit adjacent the magnetoresistive element 1 is connected to the element to provide temperature compensation. In Fig. 7, the magnetoresistive elements of two suspension unit 78, 79 at opposite ends of an axle are connected to electronic control means EL which controls operation of solenoid valves 80, 81 for releasing fluid from the units 78, 79 and solenoid valves 76, 77 for supplying fluid to the units 78, 79 from an accumulator 75 charged by a pump 74. The electronic control means EL effects either of two different time delays according to the relationship between the level signals from the units 78, 79. If both signals are of the same sense a short delay is effective but if the signals are of opposite sense a long delay prevents level adjustment in response to roll on bends. The accumulator 75 may be omitted and means provided to operate the pump whenever one of valves 76, 77 is open. In a modification, Fig. 2 (not shown), the magnetoresistive element and the magnet are located within the piston rod of. the suspension unit. In another embodiment, Fig. 3 (not shown), the level sensing means comprises a pair of reed switches actuated in accordance with the effective field strength of a magnet moving therebetween. In a further embodiment, Fig. 4 (not shown), the level sensing means is in the form of a switch having a moving contact which carries a bar magnet arranged to be influenced by either of two oppositely radiallymagnetized ring magnets.
Patent GB-1087980-A (GB)
Title: Improvements in and relating to magnetic fluid measuring devices
IPC: G01R33/04
Filed: 1964-12-14
Abstract: 1,087,980. Magnetic tests. COMPAGNIE DES COMPTEURS. Dec. 14, 1964 [Dec.31, 1963], No. 50885/64. Heading G1N. In a flux gate magnetometer (Fig. 1) the probe is connected to a symmetrical transistor oscillator 10 through a transformer 13 and a symmetrical matching circuit 20 of low internal impedance whereby rapid saturation of the probe core by winding 17 is achieved. Pulses resulting from saturation of the core during each half cycle are reproduced across resistors 21, 22 and applied by transistors T5, T6 to symmetrical integrating circuits 23, 24, the output at 28, 29 being indicative of the field strength at the probe. The oscillator output is automatically controlled by the mean value of the sum of the outputs across resistors 26, 27 by means of a transistor amplifier T7 and time constant circuit 30, 31. A field gradient and average field strength determining arrangement, Fig. 4, comprises a pair of probes 19, 19', separated by a known distance and connected in a bridge circuit with the secondary winding of transformer 16. A signal indicative of the mean field strength is produced at T5, T6, as before, and a signal indicative of the gradient is developed in a circuit 32 responsive to the second harmonic of the oscillator frequency. The sign and amplitude of the signal obtained by demodulation with the oscillator frequency is indicative of the sign and amplitude of the field gradient. In a modified magnetometer Fig. 5 (not shown) the collectors of transistors T3, T4 are connected to a single load resistor and the phase sense of the output relative to the oscillator output is determined by means of a phase detector to provide a compensating negative feedback across a capacitor in series with the probe winding. The feedback current through a series resistor is measured to indicate the field strength. Alternatively the feedback current may be supplied to an additional winding on the probe. A final embodiment Fig. 8 (not shown) for measuring both mean field strength and field gradient includes a pair of probes in a field measuring arrangement similar to that in Fig. 5 (not shown), together with a bridge arrangement as in Fig. 4 in which feedback is provided by further coils around the probes, the current in these coils being indicative of the field gradient.
Patent GB-1571189-A (GB)
Title: Seals for the bearings of hookes joints
IPC: F16J15/3236
Filed: 1976-12-07
Abstract: In a universal joint there is provided a sealing ring for sealing relative to a trunnion and a bearing element surrounding a trunnion pin having roller bearings adjacent thereto. The sealing ring has an axial portion projecting between the bearing element and the trunnion pin toward the roller bearings. A chamber is formed between the sealing ring and the bearing element. A sealing lip on the axial portion engages the inner wall of the bearing element and defines an angle of less than 90 DEG . The sealing lip is thin and resilient to define an annular membrane.
Patent GB-1485295-A (GB)
Title: Orthopaedic prosthetic implant devices
IPC: A61F2/00
Filed: 1974-11-26
Abstract: 1485295 Hip joint prosthesis MINNESOTA MINING & MFG CO 26 Nov 1974 51215/74 Heading A5R A implantable prosthetic joint comprises a head 22 for insertion into the socket member of the biological joint, a bearing insert 24 for insertion in said head, the insert having a spherical seat 44, a ball shaped member 70 for seating in said spherical seat 44 and means 72 for attaching said ball shaped member to the second anatomical member of the joint being partially replaced; the bearing insert includes attaching means 60 for retaining it in said head and is of one piece having a plurality of arcuate sections at its open edge, which when said head is removed are flexible outwardly to allow said ball shaped member to be inserted into said bearing insert and which, when said ball shaped member is in the spherical seat and the head is placed over the bearing insert, are engaged by said head for retaining said ball shaped member in the bearing insert. The bearing insert may be formed of ultra-high molecular weight polyethylene and all the other parts of cobalt chrome molybdenum alloy or of stainless steel. As shown the means 72 for attaching the ball shaped member to the second anatomical member of the joint is an intramedullary shaft. The diameter of the ball shaped member is not more than 65% of the diameter of the head resulting in a difference in torque which means that the head normally remains stationary in the socket member of the biological joint. As described, the joint is a hip prosthesis but it is stated that the joint may be used in a shoulder.
Patent GB-1444733-A (GB)
Title: Gentlamicin derivatives and process for their production
IPC: A61P31/04
Filed: 1973-11-06
Abstract: 1444733 N-Acylated gentamicin C 1a  derivatives BRISTOL-MYERS CO 6 Nov 1973 [6 Nov 1972] 51505/73 Heading C2C Novel gentamicin C 1a  having at least one amino group acylated with an L-(-)-γ-amino-α- hydroxybutyryl group, and pharmaceutically acceptable acid addition salts and hydrates thereof are prepared by blocking the amino group on the 6<SP>1</SP>-carbon atom of gentamicin C 1a  with an amino-protective group Y, acylating the resulting novel amino-protected gentamicin C 1a  with an L-(-)WNH(CH 2 ) 2 CH(OH)CO- group, wherein W is an amino-protective group and removing Y and W from the resulting amino-protected acylated gentamicin C 1a  (also novel when the 1-amino function only of the amino-protected gentamicin C 1a  is acylated), and optionally converting the product to a pharmaceutically acceptable acid addition salt or hydrate thereof. Pharmaceutical compositions having antibacterial activity comprise, as active ingredient, gentamicin C 1a  the 1-amino function of which is monoacylated with an L-(-)-γ-amino-α-hydroxybutyryl group or a pharmaceutically acceptable acid addition salt or hydrate thereof, together with a pharmaceutically acceptable carrier.
Patent GB-1180760-A (GB)
Title: Textile Yarn Core
IPC: B65H75/26
Filed: 1967-11-13
Abstract: 1,180,760. Yarn cores; coated. E. I. DU PONT DE NEMOURS & CO. 13 Nov., 1967 [14 Nov., 1966], No. 51520/67. Heading B8M. A textile yarn core is provided on its winding surface with a continuous or discontinuous layer of discrete particles of colloidal silica. A process for treating a yarn core to provide a yarn winding surface having a coefficient of friction in the range 0À4-0À6 is characterized by coating the surface with a colloidal silica dispersion to form a dry coating having 0À05-0À5 1b of silica/1000 ft.<SP>2</SP>, the dispersion having a colloidal silica concentration in the range 1-10% by weight, and the silica particles being of such a size that their surface area is 100-500 sq. m/gm. The core is preferably made of paper and the concentration of colloidal silica is preferably in the range 0À15-0À25 lb/1000 ft.<SP>2</SP>.
Patent GB-1334692-A (GB)
Title: Alternating voltage excitation of liquid crystal display matrix
IPC: G02F1/1368
Filed: 1970-10-29
Abstract: 1334692 Television RCA CORPORATION 29 Oct 1970 [6 Nov 1969] 51577/70 Heading H4F [Also in Division G5] A matrix of display elements each comprising a liquid crystal cell 10 and a capacitor 12 in a parallel circuit is scanned bit by bit or line by line to apply a D.C. potential, corresponding in magnitude to the instantaneous value of a video signal, across each parallel circuit, and is characterized in that at any one element the applied D.C. potential is reversed in polarity in alternate frames. As shown, each element 10, 12 is provided with a single Y address line 28 to which potentials - V n , +V n+1  are supplied corresponding to the instantaneous video signal at the points Y and alternating in polarity from frame to frame, and with two X address lines 24, 26 normally at - 2 V max  and +2 V max , where V max  is the maximum value of the video signal V n . Back biased diodes 20, 22 normally isolate the element. To address a row X of the elements, e.g. when the lines 28 have potentials + V n  the line 26 is switched to earth potential to allow capacitor 12 to charge via diode 22 and then returned to + 2 V. During the rest of the frame the capacitor can only discharge via the liquid crystal cell 10 which is therefore continuously activated. In the next frame, with a video signal - V n , line 24 is switched to earth to discharge capacitor 12 and charge it in the opposite sense. In a second embodiment, Fig. 3 (not shown), the diodes 20, 22 are replaced by a metal oxide semi-conductor field effect transistor (MOSFET) of the enhancement type.
Patent GB-1459356-A (GB)
Title: Preparation of vinyl chloride polymers variable capacitor
IPC: C08F2/22
Filed: 1974-11-29
Abstract: 1459356 Production of vinyl chloride polymers KANEGAFUCHI CHEMICAL INDUSTRIES CO Ltd and LION FAT & OIL CO Ltd 29 Nov 1974 [18 Dec 1973] 51913/74 Addition to 1398216 Heading C3P A paste-forming vinyl chloride polymer is prepared by polymerizing vinyl chloride or a mixture of vinyl chloride and a minor amount of one or more copolymerizable monomers, in the presence of water and one or more emulsifying agents obtained by sulphonating a C 8  to C 20  alpha-olefin, followed by hydrolysing under alkaline conditions. In the examples, vinyl chloride is homopolymerized and copolymerized with vinyl acetate using emulsifiers comprising the sodium salts of a C 12 - and a C 14 -alpha olefin which has been sulphonated. The polymers produced may be formed into pastes and plastisols in the usual manner, by mixing with plasticizers and other conventional materials.
Patent GB-1071029-A (GB)
Title: An electrostatic printer
IPC: G03B27/58
Filed: 1963-12-12
Abstract: 1,071,029. Electrophotographic printing and developing apparatus. SCM CORPORATION. Dec. 12, 1963 [Jan. 3, 1963], No. 51918/65. Divided out of 1, 071, 028. Heading G2H. In a document copying apparatus, a feed conveyer for a stack of copy sheets is actuated in response to the movement of a document towards a projection station to deliver a single copy sheet to a further conveyer (for moving it through an exposure station), when the document reaches a predetermined position along its path of travel. As shown, on actuating a start switch, a sheet of copy material, having a zinc oxide photo-conductive insulating layer on a paper base, is fed from a stack 103 by roller 80, 82 until its leading end operates switches # 3 and # 6, which de-energize electromagnetic clutch 128 and light an indicator lamp to show that the printer is ready to receive an original between rollers 273 and 274 which, together with all the other rollers (except 80, 82, 118, 120 and idler roller 140), are continuously driven by chain 132 from motor 138. The leading end of the original operates a group of switches, two of which have the effect of momentarily energizing electromagnetic clutch 128 so that the copy sheet is brought into the hip of rollers 147, 148. A further switch energizes lamp 36 and corona discharge unit 27 (see Specification 1, 71, 028). The photo-conductive layer of the copy sheet is negatively charged as it is fed through the corona unit 27. As soon as the trailing end of the copy sheet clears switches # 3 and # 6, the clutch 128 is again energized to bring a further sheet of copy material into the ready position. The image of the original is projected on to the copy sheet while both are advanced by band conveyers 300 and 160, respectively. The original passes beneath illuminated aperture 342 and its image is formed at gate 268 by projection objective 40 and plane mirror 38. The arrival of the leading end of the copy sheet at development tank 44 operates a holding switch # 2 which maintains unit 27 and lamp 36 energized until the trailing end of the original has cleared aperture 342. The circulation of air, by fan 139, assists in the drying and fixing of the developed image.
Patent GB-1261524-A (GB)
Title: New or improved golfing aid
Inventor: CALDWELL STANLEY BENSON
IPC: A63B69/36
Filed: 1968-11-02
Abstract: 1,261,524. Golfing aid. S. B. CALDWELL. 26 Jan., 1970 [2 Nov., 1968], No. 52050/68. Heading A6D. A golf-practising aid comprises two similar guides A, B adjustably connected across and at right angles to one another, with a third guide D pivotally attached to one of the guides. Guides A, B are connected at C by a base piece which is slotted to receive the guides, and the guides are held in position therein by a cap containing a spigot. Guide D is pivoted to guide B by pin 10, sleeve 20 locating guide D at right angles to guide B.
Patent GB-525960-A (GB)
Abstract: 525,960. Boiler furnaces. CERAC, Ltd., and BINGHAM, A. E. Feb. 3, 1939, No. 3666. [Class 51 (i)] [Also in Group XIII] A forced draught furnace for heating water or generating steam comprises a watercooled fuel support 15, Fig. 1, fed with fuel from a hopper 25 and shoot 22, a water cooled air duct 18 arranged above the fuel support and delivering air in a downward direction, a water cooled jacket 12 and a flue outlet 28 arranged so that the products of combustion sweep over the lower surface of the fuel support and over the inner surface of the jacket. Air is blown by a fan into a chamber adjacent to a water jacket at the rear of the combustion chamber and passes to the duct 18 and to a passage surrounding the shoot 22 from which it issues through openings 30 to the top of the combustion chamber. Air may also pass through a pipe 121 to the hopper 25 to equalize the pressure in the hopper and combustion chamber. The fuel duct 22 may be provided at its lower end with an extensible sleeve. The fuel support may be shaped as shown in Figs. 5 and 7. In a modification the jacket 12 may be surrounded by another jacket, the two jackets being connected to separate water supply and delivery pipes. Baffles may be arranged in the combustion chamber to direct the course of the gases. Specifications 403,821, 415,290, 454,578 and 518,177 are referred to.
Patent GB-1192118-A (GB)
Title: Directional Coupler
IPC: H01P5/18
Filed: 1968-11-06
Abstract: 1,192,118. Directional couplers. CO. EL COMPLEMENTI ELETTRONICI S.p.A. 6 Nov., 1968 [6 April, 1968], No. 52610/68. Heading H1W. A 3 db directional coupler comprises a casing 10 having four terminals A, B, C, D and containing coupled, parallel conductors 11, 12 which have a major cross-sectional dimension parallel to their opposed faces. As shown, the conductors have a rectangular cross-section. The characteristic impedance existing between the conductors and that between each conductor and the casing are such that the input applied to terminal A is equally divided between outputs C and D.
Patent GB-1291150-A (GB)
Title: Steroid esters
IPC: C07J1/00
Filed: 1970-11-06
Abstract: 1291150 6,6-Difluorosteroids E I DU PONT DE NEMOURS & CO 6 Nov 1970 [17 Nov 1969] 53042/70 Heading C2U The invention comprises d-, l- and dl-steroids of formula (wherein R<SP>1</SP> is Me, Et, Pr<SP>n</SP> or Pr<SP>i</SP>; R<SP>2</SP> is an alkyl, alkoxy, cycloalkyloxy or (cycloalkyl)alkoxy group of 4 to 15 carbon atoms or a cycloalkyl or (cycloalkyl)alkyl group of 6 to 11 carbon atoms; and R<SP>3</SP> is H, Me or CF 3 ) and their preparation from the corresponding free 17#-ols by reaction with an appropriate carboxylic anhydride in the presence of a catalyst, preferably 4-(N,N-dimethylamino) pyridine, or by reaction with an appropriate chloroformate in the presence of a tertiary amine. dl - 6,6 - Difluoro - 13# - ethyl - 17α - ethynyl- 17# - hydroxygon - 4 - en - 3 - one (IV) is prepared from dl - 13# - ethyl - 17# -hydroxygon-4- en-3-one (III) by the sequence: III # dl- 3,17# - diacetoxy - 13# - ethylgona - 3,5 - diene # dl - 13# - ethyl - 17# - acetoxygon - 5 - en- 3#-ol # dl-3#, 17#-diacetory- 13#-ethylgon- 5 - ene # dl - 3#,17# - diacetoxy - 5 - fluoro- 6 - nitroimino - 13# - ethyl - 5α - gonane # dl- 3#, 17# - diacetoxy - 5 - fluoro - 13# - ethyl - 5#- gonan - 6 - one # dl - 3#, 17# - diacetoxy- 5,6,6 - trifluoro - 13# - ethyl - 5α - gonane # dl- 5,6,6 - trifluoro - 13# - ethyl - 5α - gonane - 3#, 17#- diol # dl - 5,6,6 - trifluoro - 13# - ethyl - 5α- gonane - 3,17 - dione # dl - 6,6 - difluoro- 13# - ethylgon - 4 - ene - 3,17 - dione # dl- 3,3 - ethylenedioxy - 6,6 - difluoro - 13# - ethylgon- 4 - en - 17 - one # dl - 3,3 - ethylenedioxy- 6,6 - difluoro - 13# - ethyl - 17α - ethynylgon - 4- en-17#-ol # IV. The inventive compounds are stated to possess progestational and antiestrogenic activities and may be made up with carriers into pharmaceutical compositions for oral and parenteral administration.
Patent GB-1221309-A (GB)
Title: Nuclear reactors
Inventor: GILBERT CHARLES PHILIP
IPC: G21C7/22
Filed: 1967-11-22
Abstract: 1,221,309. Controlling reactors. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 18 Nov., 1968 [22 Nov., 1967], No. 53061/67. Heading G6C. In a nuclear reactor, having a heavy water moderator 5, contained in a calandria tank 4, control is effected by the flow of a neutronabsorbing gas in the calandria tubes, 3. The gas passes along the annular spaces 7, between the coolant conducting tubes 1 and tubes 3. The absorbing gas, krypton, is mixed with a carrier gas CO 2  and reactivity control is effected by variation of the gas mixture. Continuous separation out of the CO 2  is effected by condensation at 14. In a further embodiment, the valve admitting the absorbing gas, boron trifluoride, to the reactor is controlled in response to a signal indicating a reactor fault condition whilst during normal operation, a gas coolant, CO 2  is circulated through spaces 7.
Patent GB-1326269-A (GB)
Title: Basic aminoacid salts of tocopherylsuccinate and method of making same
IPC: C07D311/72
Filed: 1970-11-09
Abstract: 1326269 Tocopheryl salts EISAI CO Ltd 9 Nov 1970 [l3Nov 1969] 53102/70 Heading C2V The invention comprises water-soluble basic amino-acid salts of tocopheryl succinates which are obtained by reacting tocopheryl succinates dissolved in alcohols with aqueous solutions of basic amino-acids, with heating, and recovering the precipitated salts. In examples compounds of the invention are obtained by reacting d-α- tocopheryl succinate and dl-α-tocopheryl succinate with L-ornithine, L-arginine and L- lysine. Compositions of the above salts may be utilized as medicines in the form of aqueous solutions and tablets.