baber/WOPTO huggingface dataset:
Patent GB-923343-A (GB)
Title: Improvements in or relating to nuclear reactor fuel elements
Inventor: BLAKE LESLIE REGINALD
IPC: G21C3/33
Filed: 1959-08-17
Abstract: 923,343. Nuclear fuel elements. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Aug. 9, 1960 [Aug. 17, 1959], No. 28021/59. Class 39 (4). A fast reactor fuel element has a cylindrical protective sheath with an outer diameter of 0.1 to 0.4 inch and of metal of high creep strength, which sheath has a wall thickness of at least 1/10 of the outer diameter and capable of withstanding an internal pressure of at least 10,000 p.s.i. at a temperature of 600 C., and nuclear fuel enclosed within the sheath having a cross-sectional shape to provide intimate contact of the fuel with the sheath over at least a major portion of the periphery of such shape, there being left unoccupied by the fuel between 10 and 30% of the interior of the sheath to serve as expansion spaces for the fuel and also space for accommodation of fission products on irradiation of the fuel. The nuclear fuel is uranium or plutonium metal without any alloying additions of non-fissile material and not of oxide or carbide form. The 10 to 30% unoccupied volume may be obtained by providing the fuel with an axial cavity, enclosing a number of fuel discs within the sheath and spacing them apart by interposed pins, or by a combination as shown in Fig. 3 of an axial cavity 9 and discs 7 spaced apart by pins 7a. Alternatively, the discs may be recessed on opposite faces to provide voids in which case interposed pins are not required, the fuel may have longitudinally extending radial slots of narrow width around its surface, or a porous fuel may be used. In Fig. 7, a fuel element capsule 28 is shown comprising two tubular fuel members 23 enclosed within a sheath 24 formed from two halves welded together at line 25. The fuel has axial voids 26 and the two members 23 are spaced apart by pins 23a to provide an intermediate void 27. Fig. 8 shows an assembly of such capsules 28 in an open-ended flat can 29. A specimen fuel element is shown in its entirety in Fig. 10, four pellets 1 with axial voids 3 being enclosed within a cylindrical sheath 2 closed by cavitied plugs 37, 38 of the same material as the sheath. The plugs have rounded ends and the sheath is swaged over these ends for the relief during operation of stresses imposed on joins effected by spot welding between the plugs and the sheath. Helium or argon gas fills the unoccupied space within the element. The sheaths and end plugs may be of Ni-Cr, Ni-Cr-Co or Ni-Cr-Fe type alloys. These alloys are suitable for use in liquid sodium at 400 to 600 C. when used in conjunction with a refractory interlayer of niobium, vanadium, molybdenum or tantalum provided as a coating on the inside of the sheath, the outside of the fuel, or both. The sheath may alternatively be of molybdenum, no interlayer then being required.
Patent GB-1315875-A (GB)
Title: Method and device for loading nuclear fuel cans
IPC: G21C21/08
Filed: 1971-06-16
Abstract: 1315875 Fuel elements COMMISSARIAT A L'ENERGIE ATOMIQUE 16 June 1971 [18 June 1970] 28109/71 Heading G6C In a method of loading a nuclear fuel can with a stack of fuel pellets having a weight between two predetermined values P and P + dP, a stack of a predetermined number m of pellets is formed and weighed, then rejected if its weight is greater than P+dP or inserted into the can after the addition, if necessary, of a sufficient number of pellets to bring the weight up to a value between P and P+dP, the operations being carried out automatically in sequence. The stack of m pellets is rejected when its weight is smaller than P by an amount such that the necessary number of pellets which would have to be added exceeds a predetermined value m. The method advantageously comprises prior to the insertion of the stack into the can an additional step of length control in which the stack is rejected if its length is smaller than a predetermined value l or exceeds a predetermined value l+dl, after which there is added prior to insertion into the can a number of packing-pieces formed of fuel having low fission capture cross-section (non-enriched UO 2 , for example) or of non-fissile material, e.g. steel, such that the total length lies within a second predetermined range. Where a spring is disposed in the void space between one end of the stack and the adjacent end-cap of the cans, at least one such packing-piece should be inserted between the stack and the spring to serve as a bearing member for the spring.
Patent GB-816315-A (GB)
Title: Improvements in air blast electric circuit breakers in which drying air is deliveredto the control air pipe
IPC: H01H33/56
Filed: 1957-09-06
Abstract: 816,315. Air-blast switches. ALLMANNA SVENSKA ELEKTRISKA A.B. Sept. 6, 1957 [Oct. 11, 1956], No. 28166/57. Class 38 (5). To prevent condensation in the control pipe 7 of an air-blast switch, drying air is delivered to the pipe 7 through a capillary tube 26 and leaves the pipe through a restricted outlet opening 9, pressure-responsive means being connected to the pipe to give a signal when the pressure in the pipe exceeds a predetermined value due to leakage through a main control valve 15 or from the normally pressurized channel 5 within a pillar insulator 2; In the arrangement shown the pressure-responsive means comprise a piston 35 which is moved against the bias of a spring 36 to close contacts 32, 34 in a signal circuit 33 when excess pressure occurs in the pipe 7. The outlet 9 may be provided with a valve 10 which closes when compressed air enters the pipe 7 from a container 1 when the valve 15 opened to effect circuitbreaker operation. The drying air issuing from the capillary tube 26 rotates a pivotallymounted vane 27 to open contacts 28, 29 in a signal circuit 30. When the valve 15 is opened, contacts 37 in the supply to the signal circuits 30, 33 are opened to prevent incorrect signals being given.
Patent GB-859487-A (GB)
Title: Improvements in two-stroke cycle internal combustion engines
IPC: F02B25/00
Filed: 1958-09-02
Abstract: 859,487. Two-stroke engines. STUMPFIG, F. Sept. 2, 1958, No. 28173/58. Class 7(2). [Also in Group XXVI] For crankcase compression, air is admitted by a duct d and rich mixture from a duct e via a piston conduit p opening tangentially into a fuelevaporation and piston-cooling cavity o shaped as a body of revolution, and which may have ribs extending thereinto from the piston head and be of heat-resistant material. The air is transferred to the cylinder space via one, or two diametrically opposed, ducts f, and the rich mixture via a port n and duct g, a deflector m directing the mixture into a chamber 1 and preventing its dilution with air until scavanging is effected, complete admixture not occurring until after ignition by a spark plug k. The engine may operate with benzine or higher boiling point fuels. The duct may house a carburetter, or air into which fuel has been injected may be led to the conduit p. Mixture may be kept from the piston skirt by an annular groove q, and a communicating axial piston groove (not shown) beneath it, leading combustion gases to the duct e during downward piston movement. The compression space may be small enough to effect self-ignition.
Patent GB-922779-A (GB)
Title: Infrared scanning and electronic processing means
IPC: H04N3/02
Filed: 1961-08-03
Abstract: 922,779. Television. H. G. C. FAIRWEATHER (Barnes Engineering Co.). Aug. 3, 1961, No. 28250/61. Class 40 (3). An infra-red scanning system comprises means for imageing a beam on to an infra-red detector, means for chopping part of the beam, means for producing relative motion of the detector and image and a circuit comprising a band-pass filter for detecting the higher frequency component of the video signal, a synchronous detector for detecting the lower frequency component and means for combining the output of the filter and synchrous detector to produce a composite video signal. An infra-red beam is partly chopped at a frequency of 800 c/s. by a chopper 3 before being focused on to a detector 7 by a mirror 1. The image is scanned relative to the detector (see below) so that the output of the cell 7 is a 800 c/s. carrier modulated by the video signal, occupying a frequency band 0-400 c/s. After amplification the output is fed to a band-pass filter 12 which demodulates the 50-400 c/s. component of the video signal and to a detector 13, synchronized with the carrier by a pick-up 11, which detects the 0-450 c/s. component of the video signal. The two components are mixed in an adder 14. Mechanical scanning.-Detector 7, Fig. 3, is placed behind a germanium correcting plate 8 in a tube which is moved by a motor 26 by means of a crank-arm for line scanning. At the end of a line scan, a potentiometer 35 blanks the detector output and a lug 38 contacts with a gear-wheel 39 to shift to the next line. The centre 21 of the sphere on which detector 7 moves is the centre of curvature of lens 1 and a micrometer 19 is provided for focusing. In a modification, Fig. 7 (not shown), a plane mirror placed before chopper 3 is rotated to perform the scanning.
Patent GB-704769-A (GB)
Title: Improvements in or relating to a paper rolling or packaging mechanism
IPC: B31C1/00
Filed: 1950-11-20
Abstract: 704,769. Packaging paper sheets. NOYES, H. B., and FIES, E. E., [trading as NOYES & FIES]. Nov. 20, 1950 [July 3, 1950], No. 28298/50. Class 94 (1) Paper sheets are rolled and inserted into a container such as a postal tube in a machine comprising an elongated forked member, which is rotated to wind up paper sheets positioned between the forks thereof, and ejecting means movable along the axis of the forked member for inserting the rolled sheets into the container. The machine shown comprises a base member 11 formed with a semi-cylindrical trough having a forward position 13 of greater diameter than the rearward portion 14, the junction of the two portions being undercut to form a lip 16. A semi-cylindrical shield 18 is mounted over the portion 14 and defines therewith a pair of diametrically-opposed slots 19, 21. An elongated member 22 comprising forks 23, 24 is mounted for rotation within the portion 14 and shield 18 and is driven through gearing 31, 32 by a rotary solenoid 33 which is biassed by a spring 40 to a position such that the slot between the forks 23, 24 is normally aligned with the slots 19, 21. Paper sheets 28 to be rolled are slid through the slots 19, 21 and between the forks 23, 24, and a tubular container 39 is positioned in the trough 13 with its end underlying the lip 16. The latter operation depresses a plunger 38 operating a micro-switch 36 controlling the solenoid 33, whereby the member 22 is rotated to wind up the paper sheets as illustrated in Figs. 5-8 (not shown). At the end of the winding operation, a cam 56 on the shaft of the solenoid 33 operates the plunger 58 of a switch 53 controlling a second rotary solenoid 48, Figs. 2 and 10, which operates against a spring 52 to swing a lever arm 46 from the full to the dotted-line position. The arm 46 has a pin and slot connection with an annular member 41 slidable within the trough portion 14 and shield 18, which member operates to eject the rolled sheets from the forked member into the container. At the end of its movement, a portion of the member 41 engages the end of the container 39 and moves it clear of' the lip 16, whereby the plunger 38 is released, the solenoid 33 is de-energised and the parts return to their inoperative positions.
Patent GB-1224650-A (GB)
Title: Improvements in the regulating of rolled stock for constant cross-section
IPC: B21B1/18
Filed: 1968-06-14
Abstract: 1,224,650. Automatic control of rolling. SCHLOEMANN A. G. June 14, 1968 [June 20, 1967], No. 28335/68. Heading G3R. The difference between a desired and actual cross-section, computed from thickness and width, of metal issuing from the first roll stand of a mill, causes automatic adjustment of the rolls of that stand to eliminate the error. In Fig. 3, metal W is reduced in section by rolls 1. The velocity of entry of the metal is measured by a transducer 20 e. g. responsive to light radiated from the metal, and the roll gap is measured by a transducer 27 operated by roll gap adjuster 24. From these two signals a computer 21 produces a signal representative of the cross-section of the metal supplied to the rolls assuming a constant flow of material. This signal is compared at 22 with a signal representative of the desired input cross-section produced by a computer 33 from signals representing desired input velocity and roll gap. Any difference is applied through a converter 23 to operate roll gap adjuster 24 and thereby eliminate the error. Under the control of a pulse generator 14 driven by the rolls, the signal representing roll gap is periodically stored at 28 for periods equal to that required for the measured portions of the material to reach a width gauge 25. A computer 29 then produces from the width and stored gap measurements signals representative of cross-sectional areas of the metal leaving the rolls which are compared with a signal representative of a desired cross-section so that any differences are effective to vary the desired value of input velocity at 32 to maintain output cross-section constant.
Patent GB-891643-A (GB)
Title: Pressure sensitive adhesives
IPC: C09J7/38
Filed: 1960-08-17
Abstract: A pressure-sensitive adhesive includes a rubbery elastomer and a thermoplastic copolymer of at least one C10H16 terpene and an endo-diene bicyclohydrocarbon.  Specified elastomers are natural rubber, polyisobutylene, polyisoprene, polybutadiene, polymethylisoprene, polymethylpentadiene, polychloroprene, polyvinyl ether, polyacrylates, butadiene-styrene, butyl and butadiene-acrylonitrile.  Specified terpenes are turpentine, alpha and beta-pinene and dipentene while bicyclo-(2.2.1)-2.5-heptadiene is the specified hydrocarbon.  The copolymers are described in Specification 891,642.  Fillers, stabilizers, plasticizers, curing agents and other tackifying resins may also be present.  Solvents such as benzene, toluene and chloroform may be used.
Patent GB-758896-A (GB)
Title: Improvements in flower pots
IPC: A01G9/02
Filed: 1954-10-05
Abstract: 758,896. Flower pots. GROSFILLEX FRERES. Oct. 5, 1954 [Oct. 5, 1953], No. 28645/54. Class 6 (2). A flower pot p is formed from a synthetic resinous material such as polythene and has a dish s attached thereto by means of a bead b, Fig. 2, or flange d, Fig. 1, and a groove. The pot may be provided near the bottom with holes t to allow for drainage. The pot may be formed without a bottom and be closed by a part of the dish, Fig. 2; alternatively, a pot of conventional shape may be secured to an annular ridge in the dish, the ridge being gapped to permit the escape of water draining through the usual hole in the bottom of the pot.
Patent GB-339694-A (GB)
Title: Improvements in and relating to variable transmission gears
IPC: F16H3/16
Filed: 1929-09-21
Abstract: 339,694. Thomson, B. Sept. 21, 1929. Variable-speed gearing comprises two or more sliding elements which are moved in groups for some speeds and singly for others, at least one such element comprising a claw clutch member prevented from engaging while its speed is asynchronous. Thus a sleeve 13, Fig. 1, with a toothed gear 21 has dog clutch ends 12, 22 coacting with friction members 15, 27, respectively, which prevent asynchronous engagement as described in Specification 332,302. The sleeve 13 splined on driven shaft 8 and a sleeve 37 splined on lay shaft 34 are moved simultaneously to left and right of Fig. 1 to engage a clutch 11 on driving-shaft 5 directly, for high speed, and to engage a clutch 25 on a loose gear 26, for middle speed, respectively. For low speed, the sleeve 37 is moved independently to the left to engage pinion 38 with gear 21, and, to effect reversal, the sleeve 37 is moved to the right to entrain an idler 40. A control lever 46 is adapted to engage either two selectors simultaneously, or one selector only, the other being locked. A four-speed form is described having an additional synchronized clutch and a reversing idler brought in by eccentric movement in its own plane. A modified form of synchronized clutch is shown in Figs. 11 and 12. Dog members 154, which pass through shaped apertures in the synchronizing friction members 153, carry the actual clutch claws 156 in groups. The claws 156, which have sharpened ends, engage similar internal claws 149.
Patent GB-783097-A (GB)
Title: Improvements to immersion heaters
IPC: H05B3/56
Filed: 1954-10-05
Abstract: 783,097. Electric immersion heaters. SINGLETON, S. A. Sept. 20, 1955 [Oct. 5, 1954], No. 28678/54. Class 39(3) An immersion heater intended primarily for use in aquariums but which may be used for boiling liquids or heating photographic developer solutions in dishes comprises a heat resisting flexible tube and a coiled heating element made from an alloy such as 80/20 per cent of nickel chrome wire drawn through and housed within the tube. As shown, a flexible tube 4 of a silicone elastomer houses a heating element 5 and electrical insulating powder 11, e.g. magnesium oxide. The element 5 is connected, e.g. spot-welded, at each end to a wire 8 crimped at 10 for securing in a plug 9 of polythene or P.V.C. moulded around the wire, the plug being pushed into the end of the tube 4. The portions of the tube 4 containing the wires 8 are secured together by a sleeve 6 and the wires 8 terminate in a two-pin plug 7. The heating element may be enclosed in a tube of woven glass fibre over which is extruded a sheath of silicone elastomer.
Patent GB-391130-A (GB)
Title: Improvements in or relating to breathing appliances
IPC: B63C11/22
Filed: 1931-10-15
Abstract: 391,130. Respiratory appliances. DAVIS, R. H., 187, Westminster Bridge Road, London. Oct. 15, 1931, No. 28682. [Class 81 (ii).] In self - contained breathing - appliances, especially for submarine use, comprising a breathing-bag 10 connected by a flexible tube 12 with a mouthpiece and provided with an oxygen cylinder 14 communicating with a frangible oxygen capsule within the bag, an additional chamber 20 is formed integral with the bag 10 and communicates with it through a non-return valve 26. The chamber 20 is inflated by the user's breath and increases the buoyancy of the apparatus or compensates for loss of buoyancy due to exhaustion of the breathing - bag. Additional inflating means may also be provided comprising a cockcontrolled tube 21 or a frangible capsule of compressed gas within the chamber, or both such means. In modifications the chamber is formed by partitioning off the lower portion of the breathing-bag or is formed as a pair of chambers arranged symmetrically on the outside of the breathing-bag and connected by a conduit containing the valve 26. The outer wall of the chamber may be provided with a relief valve 22. The valve 26 may comprise a sheet of rubber 26a secured at the corners only to a ring 26b. Specification 379,131 is referred to.
Patent GB-1385432-A (GB)
Title: Process for treating two gas streams
IPC: C01B17/05
Filed: 1972-06-20
Abstract: 1385432 Sulphur: purifying waste gas UNIVERSAL OIL PRODUCTS CO 20 June 1972 28741/72 Heading C1A Sulphur is produced from two gas streams, one containing H 2 S and the other SO 2  by: (a) contacting the first (H 2 S) stream with an aqueous absorbent containing an alkaline reagent, a gas stream containing a smaller amount of H 2 S and an aqueous effluent containing a water-soluble sulphide, (b) contacting the second (SO 2 ) stream with the aqueous absorbent and finely divided sulphur, a polysulphide or a water soluble sulphide as reducing agent to produce a gas stream containing a smaller amount of SO 2  and an aqueous effluent containing a water-soluble thiosulphate, (c) reacting the effluents from (a) and (b) together to produce an effluent containing a polysulphide, (d) decomposing at least part of the polysulphide from (c) to form sulphur, hydrogen sulphide and a regenerated absorbent, (e) recycling at least part of the H 2 S from (d) to step (a), and (f) passing separate portions of the regenerated absorbent solution to steps (a)- (b). The alkaline reagent may be a carbonate or hydroxide of ammonia, an alkali metal or an alkaline-earth metal. If desired the sulphur used in step (b) may be that produced in step (d), and the polysulphide produced in step (c) may form part of the reducing agent in step (b); also part of the H 2 S produced in step (a) may be recycled to step (b). The SO 2  reduction may be conducted at a temperature of 20‹ to 150‹ C. and at a pressure sufficient to maintain the absorbent in the liquid phase. The reaction between the effluents from steps (a)-(b) may be carried out at a temperature of 125‹ to 250‹ C. The H 2 S stream may be derived from coal gas, oil gas, water gas, natural gas or refinery gas, and it may typically be present in amounts from 1 to 15 volume per cent. The SO 2  may be derived from stack gas. A wetting agent may be present in step (b) in order to ensure good contact between the elemental sulphur and the absorbed SO 2 .
Patent GB-1274669-A (GB)
Title: Heating panels
Inventor: BLEWITT RONALD HARRY
IPC: F24D13/02
Filed: 1968-06-17
Abstract: 1,274,669. Laminates. H. D. SYMONS & CO. Ltd. 17 Sept., 1969 [17 June, 1968], No. 28808/68. Heading B5N. [Also in Division H5] In a method of making an electric heating panel a flexible lamina of insulating material is given a substantially continuous coating of electrically conductive material, such as a conductive silicone elastomer, and then placed between two sheets of woven or non-woven base carrier coated with a partially cured thermo-setting resin, for example of polyester or epoxy type. This assembly is placed between two metal plates and the whole is subjected to heat and pressure to complete the curing of the thermosetting resin and cause it to fill any voids and bond the whole assembly together.
Patent GB-508760-A (GB)
Title: Improvements relating to screw propellers
IPC: B64C11/34
Filed: 1938-10-05
Abstract: 508,760. Screw propellers. RUPP, A. Oct. 5, 1938, No. 28870. Convention date, Oct. 13, 1937. [Class 114] In a screw propeller of the kind in which the blades are mounted so as to be movable outwardly in the hub under centrifugal force, restraint thereto is provided by levers which are pivoted to the boss and which project from the hub in a direction transverse to the length of the blades, and all the levers are connected to ensure equal movement. The hub 2 has pivoted thereto at 12 levers 11 which carry rollers 13 bearing on an external flange on the blade roots 1. The outer ends of the levers are connected by spring 9 and at intermediate parts connections are made by rods 10 with a pivoted piece 7 mounted on an extension 8 of the hub; motion of the levers 11 is thereby equalized. In an alternative form, the levers act upon flanges inside the hub which flanges carry respectively a screw and nut whereby motion of the levers is equalized. In another form, the levers 16 are connected by links 18 with a slot 20 in a bracket upon the hub. In another modification, on the pivot points of the levers are mounted sectors which gear with each other to provide equal motion and as a variant of this, where more than two blades are employed, the sectors of each of the pivots gear with a common central gear wheel.