baber/WOPTO huggingface dataset:
Patent GB-1218139-A (GB)
Title: Fibrous materials
IPC: D01F9/21
Filed: 1968-08-13
Abstract: 1,218,139. Oxidizing PVA filaments. UNION CARBIDE CORP. 13 Aug., 1968 [1 Sept., 1967], No. 38591/68. Heading B5B. [Also in Division C1] Water-insolubilized fibrous polyvinyl alcohol is oxidized with an O-containing compound of a transition metal, e.g. in solution at 85 C., for a time, e.g. 5-10 minutes, sufficient to convert it to an essentially thermoset non-fusible product. In examples PVA yarn is treated with Cr 2 O 3  (in solution in H 2 SO 4  or HNO 3 ), acid K 2 Cr 2 O 7  or the vapour of CrOCl 2 . The product may be carbonized (see Division C1).
Patent GB-933197-A (GB)
Title: Improvements in and relating to the production of tantalum powder
IPC: B22F9/02
Filed: 1961-10-30
Abstract: Tantalum hydride is produced by (1) heating a mixture of powdered carbonaceous reducing agent and up to 15% excess powdered tantalum oxide under vacuum to a temperature between 2000 DEG C. and the melting point of the tantalum oxide, (2) maintaining the temperature until gaseous evolution ceases and (3) cooling the furnaced mixture in hydrogen at sub-atmospheric pressure.  The hydride is then comminuted and heated under vacuum to produce tantalum powder (see Group II).  The starting material is preferably tantalum pentoxide and the reducing agent graphite, lampblack, acetylene black or thermatomic carbon.ALSO:A tantalum powder having a surface area per unit mass of 1000-6000 cm.2/gram, has a particle size of less than 40m  and contains less than 0.02% C and less than 0.01% Fe (by weight). The powder is produced by (1) heating a mixture of powdered carbonaceous reducing agent and up to 15% excess powdered tantalum oxide under vacuum to a temperature between 2000 DEG  C. and the melting-point of the tantalum oxide, (2) maintaining the temperature until gaseous evolution ceases, (3) cooling the furnaced mixture in hydrogen at sub-atmospheric pressure, (5) comminuting the resultant tantalum hydride, and (6) heating the hydride under vacuum to produce the tantalum powder.  The starting material is preferably tantalum pentoxide and the reducing agent graphite, lampblack, acetylene black or thermatomic carbon.
Patent GB-1074458-A (GB)
Title: Improvements in and relating to lamps with reflectors
IPC: F21V7/00
Filed: 1964-09-22
Abstract: 1,074,458. Lamps. P. CIBIE. Sept. 22, 1964 [Oct. 11, 1963], No. 38680/64. Heading F4R. A motor vehicle headlamp has an oblong front opening the perimeter of which is formed by two parallel lines and two symmetrical circular arcs whose centres are not at the centre of symmetry of the opening, and a reflector which comprises a portion of a parabolic surface of revolution joined to the opening by a cylindrical surface described by a generating line which moves parallel to the axis of the parabolic surface and traces the perimeter of the opening, the parabolic surface being such that it intersects the plane of the opening in a circle having a diameter at least equal to the greatest dimension of the opening.
Patent GB-1279242-A (GB)
Title: Nuclar reactor fuel element assemblies
Inventor: HYNE MICHAEL GEORGE
IPC: G21C3/32
Filed: 1968-08-13
Abstract: 1279242 Fuel elements BRITISH NUCLEAR DESIGN CONSTRUCTION Ltd 12 Aug 1969 [13 Aug 1968] 38696/68 Heading G6C A fuel element assembly for a reactor core of the kind comprising vertical columns of moderator material through which coolant channels extend, includes a number of layers of fuel pins, each layer comprising a number of rodlike fuel pins which are held in spaced relationship in a coolant channel and are supported by the wall of the channel, and support grids disposed between the layers of fuel pins and each provided with ribs arranged to engage the wall of the channel so as to centre the grid in the channel. In the embodiment shown in Figs. 1 and 2, each column is formed from a number of aligned graphite bricks 1A and has a number of parallel spaced coolant channels 2 extending through it. That part of each coolant channel 2 extending through each brick 1A contains two layers of fuel pins, there being four fuel pins 3 to each layer. Each fuel pin 3 comprises an outer tube 4 of silicon carbide closed by end fittings 5, 6, also of silicon carbide, and filled with pyrocarbon coated fuel particles. The pins 3 of the upper layer are held in spaced relationship at their upper ends by radially extending ribs 8 integral with the end fittings 5 and engaging at their outer ends with the surface of the coolant channel 2, and by radially extending ribs 9 engaging with co-operating ribs 9 on adjacent fuel pins. The shaped ribs 9 also act to hold the fuel pins substantially against relative rotation. The bottom ends of these pins are held in spaced relationship by means of end fittings 6, in the form of spigots, engaging in spaced holes in a ceramic grid 11, and are supported axially by offset seating surfaces 12 provided on the upper surface of the grid. The grid 11 is centred in the channel 2 by radial ribs 13. The weight of the upper layer of pins is transmitted to the lower layer through offset bearing surfaces 14 formed on the lower surface of the grid 11 in axial alignment with the corresponding offset seating surfaces 12. The adjacent ends of the two layers of pins are therefore urged laterally towards the wall of the channel 2. The radial ribs 8 of the end fittings 5 of the lower layer of pins engage with an annular seating 15 in the channel wall. In an alternative embodiment (Fig. 7, not shown), the layers of fuel pins are stacked continuously through the coolant channel, only the lowermost layer of pins being located on an annular seating. The support grids are orientated 180 degrees relative to each immediately vertically adjacent grid so that the offset casting and bearing surfaces of the grids act on the layers of pins to cause them to lie in zig-zag formation within the coolant channel.
Patent GB-908575-A (GB)
Title: Improvements relating to centrifuges
Inventor: PICK GERALD WHITELAW
IPC: B04B5/04
Filed: 1960-11-10
Abstract: 908,575. Centrifugal separators. BAIRD & TATLOCK (LONDON) Ltd. July 11, 1961 [Nov. 10, 1960], No. 38704/60. Class 23. A centrifuge head comprises a member 11, Fig. 1, pivotable about an axis normal to a plane passing through the axis of rotation of the head and in which is received at least one container 13, Fig. 4, with its longitudinal axis offset from the plane. The head consists of a boss 4 driven by a vertical shaft 2 of an electric motor 3, and having radial arms 5 at the extremity of each of which is pivotally mounted a shaft 10 carrying at its ends members 11 formed with apertures 12 to accommodate test-tube holders 13 which hang vertically when the centrifuge is at rest. When the head is rotated the holders 13 swing from the vertical to the horizontal position as shown in Fig. 4. In a modification, Fig. 5, the boss 4 has two pairs of oppositely projecting arms 15, each carrying a pivotable member 11 in trunnions 16.
Patent GB-1449058-A (GB)
Title: Speed-controlled brushless motors
IPC: H02P6/16
Filed: 1973-08-16
Abstract: 1449058 Automatic control of speed CANON KK and CANON SEIKI KK 16 Aug 1973 [16 Aug 1972] 38867/73 Heading G3R [Also in Division H2] In a rectroactive speed control system for a brushless D.C. motor, wherein the speed of the motor is detected by Hall generators which produce pulses the frequency of which represents the motor speed, a voltage representative of this frequency being compared with a reference signal, any difference being used to vary the gain of a control circuit for the motor drive. As shown, the outputs of the Hall generators H 1  H 2  pass via a converter 5 to comparator 6 where they are compared with a fixed speed referance as determined by potentiometer R14 and Zener diode ZD1. The comparator output via amplifier 6' is used to control, in accordance with the output, the gain of amplifiers A 1  to A 4 , which amplify the Hall generator outputs to sequentially energize the motor stator windings L1-L4. The system may also include means to apply braking current to the stator windings, if the detected speed is in excess of the reference speed by more than a predetermined amount. Thus, the output from the comparator may be switched to amplifiers A 1  to A 4 , to braking control tranistors (Tr 21  to Tr 24  or to both, Fig. 6 (not shown). Braking is caused by reverse current flow through the stator winding.
Patent GB-1262608-A (GB)
Title: Hollow aerofoils
Inventor: LENTZ JEROME VICTOR
IPC: B21D53/78
Filed: 1970-08-13
Abstract: 1,262,608. Making turbine blades. GENERAL MOTORS CORP. 13 Aug., 1970 [24 Nov., 1969], No. 39059/70. Headings B3A and B3Q. [Also in Division F1] A hollow turbine blade having a nickel based sheet metal outer wall 19 and a capillary lining 22 of metal wool like stainless steel is made by chemically milling the metal sheet 19 to form elongated bosses 20, electric discharge machining holes in the lining 22 corresponding to the bosses 20, fitting the lining over the bosses and furnace brazing them together. The lining 22 and bosses 20 are then chemically milled to give a desired variation in lining thickness. The resulting blank 18 is shaped using a die and punch such as 28, 30 and a rubber sheet 26 to prevent damaging lining 22. The partially shaped blank 18 is then folded around a punch 32 to form the blade shape and welded or brazed at trailing edge 16 before hot creep dies are used to give the blade a desired twist. In a modification bosses 20 are constituted by small pieces of metal brazed or welded to sheet 19.
Patent GB-854666-A (GB)
Title: Improvements in or relating to ornamental beads and like bodies
IPC: A44C11/00
Filed: 1958-12-04
Abstract: 854,666. Jewellery. CHELTON (POPPITS) Ltd., CHARLES, G. R. S., and SANDERSON, W. T. Sept. 1, 1959 [Dec. 4, 1958], No. 39189/58. Class 43 [Also in Group XXV] A bead 10 of rigid material has an insert of resilient material forming either a protruding head 22 and neck 23 or at least the mouth 17 of a lipped socket 16 which engages either a socket or head of another bead. A bead may have two opposed heads either integral with the bead or forming a resilient insert and be combined with a bead having one insert comprising two resilient sockets or two inserts each insert comprising a resilient socket. The insert comprises a split socket alone or combined with a head 52 and be made of rigid material such as metal, or hard plastic, the bead being slidable over the insert to allow the socket to open slightly and engage a head of a bead and then returnable to engage a shoulder 55 with the insert. Instead of a split socket a resilient washer may be inserted between the end of the socket and a step at the end of the box in the bead. A bead, Fig. 11, has a cylindrical cavity with lips 82 at one end retaining a head 86 with a neck 85 which engages in a resilient socket 83 with a tapered bore of another bead. The socket may be secured to the bead by adhesive. The mouth of the socket may have a continuous lip or several lips. Specifications 750,737 and 871,074 are referred to.
Patent GB-836101-A (GB)
Title: Improvements in or relating to suction dredgers
IPC: E02F3/94
Filed: 1958-12-05
Abstract: 836,101. Suction dredgers. BOS, W. A. Dec. 5, 1958 [Dec. 7, 1957], No. 39341/58. Class 68(1) Between the suction pump 1 and the delivery pump 2 of a suction dredger is positioned a reservoir 7 that is provided with an overflow 10 leading to an overflow tank 11. From the tank 11 a conduit 12 leads to a pump 4 that discharges in and at the base of the reservoir 7 to both agitate the material in the bottom of the reservoir 4 to maintain, by regulation of the output of pump 4, optimum mixture conditions at the intake of pump 2. Similarly optimum mixture conditions are maintained at the mouth of the suction pipe 5 leading to pump 1 by a pump 3, the intake of which is connected by a pipe 14 to the tank 11.
Patent GB-939831-A (GB)
Title: Clarifying liquids
IPC: B01D21/00
Filed: 1961-11-03
Abstract: 939,831. Gravity separation apparatus. UNION TANK CAR CO. Nov. 3, 1961 [Nov. 7, 1960], No. 39414/61. Class 46. Liquid, e.g. sugar juice containing impurities, is introduced at 30 to a deflection plate 32. Foam is directed by skimmers 44 into a canal 47. Heavy solids collect on a tray 48, are moved by scrapers 56 to a central sump 51 and are discharged at 52. Thickening pickets 58 are mounted on the scraper structure. Lighter solids settle on trays 60a to 60d and are scraped to the bottom of the tank, which itself constitutes a further tray having a sump 74, whence solids are removed at 85. Clarified liquid is removed by pipes 42, which communicate with a draw-off box 70.
Patent GB-1076934-A (GB)
Title: A process for producing cyanuric acid
Filed: 1964-09-28
Abstract: Cyanuric acid is prepared by heating urea or biuret or a mixture thereof below 400 DEG  C. on the surface of a molten metal inert to urea, biuret and organic acid.  The metal having melting-point not exceeding 350 DEG  C. until a solid mass is formed and thereafter further heating the solid mass to obtain a solid cyanuric acid-containing product.  The metal may be, tin, bismuth, and lead and alloys such as of tin, antimony and lead and of lead and tin, e.g. 60 parts tin and 40 parts lead.  The starting material may be added to the molten metal as a melt, e.g. preheated to 180 DEG  C. After the melt solidifies the heating may be continued or alternatively the solid intermediate product may be removed, granulated and heated in a heating tank.  The product from the second heating is hydrolysed by heating with 5-30% mineral acid.  Layers of about 1.5 cm. of starting material are usually used, thicker layers may be heated by heat radiated downwards on to the upper surface. In a continuous mode of operation molten starting material is fed on to the surface of the molten metal forming a layer 1.5 cm. thick and drawn over the surface by means of parallel wire ropes, delivered to a grinder and ground to less than 30 mesh (U.S. Series).  The intermediate is then heated at 280 DEG  C. in a stainless steel ribbon mixer and then hydrolysed continually by boiling in 15% aqueous sulphuric acid.  The urea entrained in the ammonia evolved during the heating of the urea and/or biuret and of the solid intermediate product may be recovered by passing the emergent gases into water, an aqueous solution of urea, molten urea or by condensing on a surface maintained at 100-130 DEG  C. and subsequently recycled.
Patent GB-1028863-A (GB)
Title: Water cooled continuous chill for continuous casting made of copper plates
IPC: B22D11/059
Filed: 1963-10-08
Abstract: 1,028,863. Continuous casting - machines. MANNESMANN A.G. Oct. 8, 1963 [Oct. 18, 1962], No. 39564/63. Heading B3F. A water-cooled continuous casting mould is made of Cu plates with a sprayed-on Mo coating.
Patent GB-888249-A (GB)
Title: Improvements relating to diffusion pumps
IPC: F04F9/00
Filed: 1960-11-18
Abstract: 888,249. Diffusion pumps. COMPAGNIE FRANCAISE THOMSON-HOUSTON. Nov. 18, 1960 [Nov. 18, 1959; Nov. 26, 1959], No. 39738/60. Class 71. A diffusion pump has one or more downwardly-flaring ejector cowls 9, formed at their lower edge with a plurality of salients 10 from which resilient wires 11 e.g. of stainless steel extend into contact with an internal wall face 4 so that drops of condensate are directed from the cowl towards the internal face. The pump may be surmounted by a baffle assembly 12 containing two superposed baffles 13, each in the form of a spiral which includes a coil 14 through which a cooling liquid e.g. water or " Freon " (Registered Trade Mark), may be circulated.
Patent GB-880029-A (GB)
Title: Production of trans-1,4-dichlorobutene-2
IPC: C07C17/358
Filed: 1958-12-10
Abstract: Trans-1,4-dichlorobutene-2 is prepared by contacting one or more of 3,4-dichlorobutaene-1 and cis-1,4-dichlorobutene-2 in an oxygen-free atmosphere with aqueous hydrochloric acid containing a cuprous salt, and separating from the resulting mixture the organic phase comprising trans-1,4-dichlorobutene-2.  The initial reaction mixture may also contain trans-1,4-dichlorobutene-2, and may be that obtained by the chlorination of butadiene.  The reaction temperature may be 25-100 DEG C, and the ratio by volume of the aqueous to the organic phase is preferably between 10 : 1 and 1 : 10.  The cuprous salt may be the chloride, and the hydrochloric acid concentration in the isomerisation catalyst is preferably at least 10% by weight.  The reaction product can be nitrilated to produce 1,4-dicyanobutene-2. Specifications 639,438, 646,964 and 646,965 are referred to.
Patent GB-1270608-A (GB)
Title: Electrophoretic deposition
IPC: C25D13/00
Filed: 1970-08-18
Abstract: 1,270,608. Electro-phoretic deposition. FUJI PHOTO FILM CO. Ltd. Aug. 18, 1970 [Aug. 18, 1969J, No.39790/70. Heading C7B. A material, such as pigment particles with resin binder, is electro-photically deposited on one or both sides of an article, e.g. a metal plate or vessel 50, by partially or wholly immersing the article in an electro-deposition bath comprising particles (e.g. in solid, emulsoid, colloid or macromolecular form) of the material dispersed in an insulating liquid, and applying an electric potential e.g. 1-100 KV between a needle-shaped corona discharge electrode 20 disposed outside the bath and a counter-electrode, the article being placed between the electrodes and insulated therefrom. The bath vessel 21 may be conductive and used as the counter-electrode, or insulating with the counter-electrode disposed inside or outside the vessel Fig. 9 (not shown). As shown, the article may be floated on the bath. For simultaneously coating both sides of a vessel, the inside and outside thereof may be in respective contact with baths containing particles of opposite polarity. Examples of materials deposited are mixtures of (1) vinyl acetate resin, ZnO powder and acetone, and (2) nitrocellulose, C black, Soybean oil-modified alkyd resin and butyl acetate, each dispersed in kerosine having dispersed therein linseed oil by applying ultrasonic waves. The coating (e.g. of paint or ink) formed may be fixed by solvent vapour e.g. acetone or heating, and hardened by condensation polymerizing.
Patent GB-968329-A (GB)
Title: Improvements in or relating to self sealing materials
Inventor: WELCH PATRICK PALLES LORNE ELP
IPC: B65D81/00
Filed: 1960-11-21
Abstract: 968,329. Laminates. MICROCELL Ltd. Nov. 21, 1961 [Nov. 21, 1960], No. 39911/60. Heading B5N. [Also in Division E1] An article of sheet or hollow form comprises a rigid sheet or wall provided with a lining of foamed resilient material, such as natural or synthetic rubber, polyurethane, polyester, polyvinyl chloride or polythene, which has communicating or non-communicating cells and is under compression in at least one direction other than its thickness to such an extent that when a hole is made in the foam, the foam expands to seal the hole. The lining may comprise two layers of foamed resilient material with a non-porous membrane of polyvinyl chloride or polyethylene between them, at least one layer of the resilient material being under compression. The resilient material may be placed between two structural sheets of steel and laterally compressed in two directions at right angles; alternatively it may be placed in a polyethylene bag and compressed by extracting the air therefrom. A vessel of glass fibre reinforced resin having cavity walls may have the cavities filled with polyester foam material having intercommunicating cells and precompressed in a vacuum bag.
Patent GB-1515006-A (GB)
Title: Method and apparatus for seismic geophysical exploration
IPC: G01V1/22
Filed: 1975-09-30
Abstract: 1515006 Seismic exploration SUPERIOR OIL CO 30 Sept 1975 [23 Dec 1974] 39971/75 Heading G1G In seismic exploration, a control station 16 transmits commands to a seismic generator station 12 and to a plurality of monitoring stations 14 each connected to one or more geophones 13 for sampling and storing data obtained from the geophones in response to a particular shot from the generator and summing this data with the data, if any, obtained in response to a previous shot or shots and for transferring the summed data to a cassette recorder. The cassette recorders are collected from the monitor stations for further, conventional, processing by computer. Individual commands for shot firing, sampling, transfer of data to cassette may be transmitted by cable or, preferably, by radio as a series of frequency-shift-keyed binary pulses, the various commands being carried out immediately they are received. Preferably, the control station 16, generator station 12 and monitor stations 14 have their own internal time-of-day clocks which can be synchronized on command from the control station and "time of first shot", "time of next shot" and "time to write sum" signals are sent repeatedly, in advance of the times when the commands are to be carried out, thereby reducing the risk of communication error. In another system, the generator station and monitor stations have internal pre-selected programmes, related to the time-of-day clocks, which can be synchronized when all the stations are in good radio contact, the stations then being deployed before the first shot is due. The generator station and monitoring stations preferably include means for checking whether the length and rate of the command signals are correct.
Patent GB-1503439-A (GB)
Title: Compositions for use in the production of 99m technetium radio-diagnostics
IPC: G21H5/02
Filed: 1976-09-28
Abstract: 1503439 Radio-diagnostic compositions HENKEL & CIE GmbH 28 Sent 1976 [29 Sept 1975] 40124/76 Heading A5B A composition for use in the production of <SP>99m</SP> technetium radio-diagnostics for the scintography of bones and calcareous tumours comprises a mixture of (a) one or more aminophosphonic acids and/or aminophosphonates of the general formulae: in which n=1 to 3 and R=H or C 1  to C 6  alkyl. in which n=4 to 8 and R=H or C 1  to C 4  alkyl,  in which R=H or C 1  to C 6  alkyl, in which R=H or C 1  to C 6  alkyl, in which n=3 to 6 and R=H or C 1  to C 4  alkyl,  in which R 1  and R 2  are H or C 1  to C 3  alkyl, or the pharmaceutically acceptable water-soluble salts of the above-mentioned phosphonic acids, and (B) a pharmaceutically acceptable tin (II), iron (III) or chromium (II) salt in less than stoichiometric quantities relative to component (a).
Patent GB-1487398-A (GB)
Title: Method of supervising rotational speed and circuit for carrying out this method
IPC: G01P1/10
Filed: 1974-09-17
Abstract: 1487398 Measuring rotary speed electrically R BUCK 17 Sept 1974 [17 Sept 1973] 40584/74 Heading G1N A method of monitoring rotary speed in which an A.C. signal a of frequency representative of speed is provided by e.g. a tachogenerator includes the steps of; using the pulses of a pulse train c, derived from the signal a, to reset repetitively to zero the output e of an integrator 1, using the pulses of the pulse train c repetitively to set or reset a bi-stable circuit 2, comparing the integral with a reference voltage in a comparator 4 and producing a response pulse f if the reference voltage is exceeded; passing the response pulse to reset or set the bi-stable circuit and deriving an output signal from the change of state of the bi-stable circuit, produced by the response pulse, to indicate overspeeding. Preferably the A.C. signal a is squared up in a Schmitt trigger 5 and differentiated 6 to produce spikes for resetting the integrator which integrates a constant current from a generator 10. To avoid problems arising from simultaneous provision of a set and a reset pulse to the bi-stable it has a dominant set (or reset)-input. By means of a storage element 7 e.g. a capacitor the duration of the response pulse is greater than the time for which the integral exceeds the reference voltage.