baber/WOPTO huggingface dataset:
Patent GB-1138288-A (GB)
Title: Method of flux separation in nuclear reactors and structure therefor
IPC: G21C5/18
Filed: 1966-03-15
Abstract: 1,138,288. Controlling reactors. C. N. KLAHR. 15 March, 1966, No. 11274/66. Heading G6C. In a nuclear reactor having separate fast and thermal regions, a reflector is mounted between the two, in order to limit neutron coupling. The ratio of the thermal fluxes on the two sides of the reflector is defined as a function of the albedo of the reflector material. Control of the reactivity is effected by variation of the reflector thickness. Initially, power is produced mainly in the thermal region and as fuel is consumed there, the reflector thickness is reduced to permit thermal neutron leakage into the fast region to raise the power therein. Simultaneously, an increased diffusion of neutrons from the fast to the thermal region takes place, the whole reaction being maintained by this neutron flow with sufficient excess reactivity for xenon override. The fast region contains high enrichment fuel and has a low power density while the thermal region contains low enrichment fuel and has a high power density. The reflector consists of a metallic oxide clad in stainless steel. The coolant may be light or heavy water, or gas, with the distribution arranged so as to restrict the moderation effect in the fast region. The high enrichment fuel comprises U-233, U-235 and Pn-239.
Patent GB-879594-A (GB)
Title: Manufacture of alkali metal phosphates
Inventor: RODIS FRANZ
IPC: C01B25/39
Filed: 1959-04-02
Abstract: Alkali metal triphosphates, pyrophosphates or mixtures thereof are prepared by spraying a mixture of an alkali metal orthophosphate and water having a P2O5/alkali metal oxide ratio from the range of 1:2 to 3:5 into a spraying tower and heating it therein to a temperature below 800 DEG C. to effect the conversion, the spraying conditions being such that the waste gases leave the tower at a temperature between 200 and 500 DEG C. and with a water content of at least 60 but less than 200 grams per kilogram.  A P2O5/alkali metal oxide ratio of 3:5 gives rise to a triphosphate whilst for pyrophosphates, a ratio of 1:2 is necessary.  According to Examples, (1) disodium phosphate was melted in its own water of crystallization and sprayed into a spray tower fed with gases at 700 to 800 DEG C. passed cocurrent therewith.  Gases left the tower at 400 DEG C. and tetrasodium pyrophosphate was obtained.  (2) A mixture of disodium and monosodium phosphates was mixed with water and the slurry sprayed into a drying tower; sodium tripolyphosphate was produced. Specifications 788,682 and 817,520 also are referred to.
Patent GB-551758-A (GB)
Title: Feeding mechanism for sewing machines
IPC: D05B27/16
Filed: 1941-09-04
Abstract: 551,758. Sewing-machines. FAIRWEATHER, W. C. (Singer Manufacturing Co.). Sept. 4, 1941, No. 11313. [Class 112] [Also in Group XXIV] The work is fed by a laterally vibrating needle and continuously rotating upper and lower feed wheels 90, 42. The upper feed wheel 90 is driven through a flexible cable 75, a worm 85, and toothed wheels 86, 88, Fig. 3. The feed wheel and gears 85, 86, 88 are carried in a bracket 83 which is carried by the presserbar and held in place by a spring, and which can be turned out of the way for needle-threading. Both feed wheels receives continuous rotation through change-speed gear boxes 50, 40 respectively. The gears Fig. 6, comprise three wheels 52, 53, 54 on the driving shaft and three wheels 55, 56, 57 loose on a driven stub shaft 58. The latter wheels are selectively coupled to the stub shaft 58 by means of a spring-pressed latch 64 which can be moved axially by means of a knurled head 69. The driving shafts 47, 39 are driven from a vertical shaft 21, one through skew wheels 48 and the other through a worm 27 and wheel 38. The needle vibration is obtained from an adjustable eccentric 18. The loop-taker is driven through bevel gears 26, 29 at the lower end of the shaft 21.
Patent GB-128612-A (GB)
Title: Improvements in and relating to Presses for the use of Carpenters, Joiners and others.
Inventor: ROCHE BERTRAM VICTOR
IPC: B27D3/00
Filed: 1917-08-07
Abstract: 128,612. Roche, B. V. Aug. 7. 1917. Cramps and clamps.-A press, particularly for securing together the laminµ of aircraft propellers, comprises a number of open boxes each containing a flexible bag provided with means for the admission and exhaust of fluid under pressure, and means for supporting the boxes from a. table on which the work is placed. As shown in its application to a four-bladed propeller, four boxlike bodies d contain flexible bags c which are provided with inlet valves e for air, gas, or liquid under pressure and exhaust valves d<1>. The boxes d are supported from the work table a by cramps f so that the bags c contact with the upper surface of the laminµ b. The overhanging parts of the laminµ are supported by packing-pieces g provided with rubber or other resilient strips on their upper and lower surfaces. Plates freely movable in the boxes d may be interposed between the bags and the work.
Patent GB-113783-A (GB)
Abstract: 113,783. Ges. f³r Chemische Industrie in Basel. Feb 27, 1917, [Convention date]. Anthraquinonehydroazines. - Tri-and tetrachlor derivatives of N - dihydro - 1 : 2 : 2<1> : 1<1> - anthraquinoneazine are obtained by acting with an excess of chlorine on the dyestuff (or its low halogenated derivatives) suspended in an inorganic non-aqueous liquid containing halogen, except chlorsulphonic acid. Suitable liquids are sulphuryl chloride, thionyl chloride, sulphur chloride, phosphorus oxychloride, antimony pentachloride, and bromine. According to examples :- chlorine is passed through a suspension of the dyestuff in either cold or boiling sulphuryl chloride; the dyestuff is first chlorinated by boiling with sulphuryl chloride in benzene, and is then treated with chlorine in boiling phosphorus oxychloride; chlorine is passed through a suspension of the dyestuff in liquid bromine. The products dye blue shades fast to chlorine from a hydrosulphite vat. Specifications 4035/02, 23179/03, and 17242/05 are referred to. The Specification as open to inspection under Sect. 91 (3) (a) describes also the production of a bromochlor derivative by first treating the dyestuff with liquid bromine and then treating the bromo derivative with chlorine in boiling sulphuryl chloride. This subject-matter does not appear in the Specification as accepted.
Patent GB-1091145-A (GB)
Title: Deflecting signal circuit for an electron beam oscillograph
IPC: H03K4/50
Filed: 1965-03-17
Abstract: 1,091,145. Deflection signal generator for an oscillograph. SIEMENS A.G. March 17, 1965 [March 17, 1964], No. 11411/65. Heading H3P. A circuit for producing a deflecting signal for an electron-beam oscillograph, comprises a deflecting signal generator A (Fig. 1, not shown), fed by a multivibrator (S), fed by trigger pulses (T), and locking voltage producing means (V) for applying a locking voltage to the multivibrator to prevent actuation by further trigger pulses until the completion of the deflecting signal, the means comprising electronic switching means 2, having an output 1 connected (a) to the multivibrator, (b) to the tap of a voltage divider and (c) to a diode 6 which is also connected to a control input of the switching means, the conductive directions of the switching means and the diode being opposite with respect to the output, the arrangement being such that when the deflecting signal has commenced the voltage applied to the control input actuates the switching means to apply the locking voltage from the voltage divider, to the voltage applied to the control input having a peak portion of magnitude to reset the multivibrator, the said peak portion of the voltage being applied via the diode to the multivibrator. In Fig. 1 the switching means comprises a transistor which is rendered non- conducting as the output of the cathode follower 8, which is fed by a time delayed output from generator A, increases. As the output of the cathode follower increases further the diode 6 conducts to pass the peak of the delayed integrated waveform to reset the multivibrator. The locking voltage is maintained until the cathode follower output has decreased such that transistor 6 is again conducting. In Fig. 2 (not shown) the single transistor switch is replaced by a bi-stable multivibrator comprising a transistor TS1 and valve RÍ2 coupled together via a diode D3 which protects the transistor against emitter-base punch-through. In the waiting state the transistor is conducting, but as the potential from the cathode follower increases valve RÍ2 is rendered conducting, thus switching TS1 to apply the locking voltage to the multivibrator. The peak waveform is passed by diode 6. The RC combination connected to the grid of RÍ2 serves to delay the trailing edge of the control voltage.
Patent GB-365900-A (GB)
Title: Packing for cigarettes
IPC: B65D75/52
Filed: 1931-04-17
Abstract: 365,900. Coating webs. UNIVERSELLE CIGARETTENMASCHINEN-FAB. RIK J. C. MœLLER & CO., 48, Zwickauerstrasse, Dresden, Germany. April 17, 1931, No. 11453. Convention date, Feb. 27. [Class 140.] In making wrappers with a transparent portion, a web A of paper is fed between a pressure roller d and a roller b of which a portion bl is arranged to dip into a paraffin bath c. The web is then severed into blanks.
Patent GB-142465-A (GB)
Title: Improvements in and relating to the conversion of electric currents
IPC: H02M7/10
Filed: 1920-04-26
Abstract: 142,465. Siemens - Schuckertwerke. Feb. 7, 1917, [Convention date]. Converting alternating and direct currents.- In a method of converting an alternating pressure into a continuous pressure of high voltage, a series of condensers 20 - - 24 is used, each of which is connected in series with a current interrupter which only permits current to pass in one direction. Preferably, vacuum valve tubes 10 - - 14 are used as interrupters. Of the groups of condensers and interrupters thus formed, the first is connected to the alternating current mains 1, 2, the second is connected to a point between the condenser and interrupter of the first group and to the main 2, the third to a point between the condenser and interrupter of the second group and to the main 1, and so on. During the first half period, the condenser 20 is charged to the voltage v of the alternating pressure, and during the next half period the voltage of this condenser is added to the alternating pressure and the condenser 21 is charged to a voltage 2v. The process is repeated at each group, the condenser 24 of the fifth group being charged to a voltage 5v. Each condenser in the series has a larger capacity than that of the succeeding condenser. The invention is applicable for all purposes in which a continuous high voltage with comparatively small current consumption is required-e.g. for cable testing, measuring purposes, or for smoke-precipitating plants.
Patent GB-183255-A (GB)
Title: Improvements in louvred or ventilating windows
IPC: E06B7/082
Filed: 1921-04-21
Abstract: 183,255. Greenwood, T. W. April 21, 1921. Ventilators.-Ventilation of larders, lavatories, stables, &c. is attained by means of a window louvred at top and bottom and glazed at c with a hinged or fixed sash. The frame is preferably of metal, and the louvers may be movable. A fly-screen of perforated metal or gauze &c. may be attached to the frame at the back of the louvers. Specification 2487/75 is referred to.
Patent GB-587404-A (GB)
Title: A new or improved potato planting machine
IPC: A01C9/08
Filed: 1944-06-17
Abstract: 587,404. Potato planters. STEYNOR, R. L. June 17, 1944, No. 11573. [Class 6 (i)] A potato-planting machine comprises a frame supported by wheels 12 formed from three rings-two outer 13 and one inner 14 of less diameter than the other two. The rim of the wheel is thus of concave cross-section allowing it to run on ridges without disturbing the furrows. One or more slides 25 are provided for engaging in the furrows and depositing the potatoes. The feed wheels 18 comprise spaced discs 19 and a drum 32 to which is detachably fixed a flexible band 22 having a number of radial plates 23 forming pockets. Bands having different numbers of plates may be attached so varying the spacing of the potatoes. The potatoes are fed by hand into the pockets and are conveyed downwards and guided into the furrow by means of the side checks 27 on the slides 25. A guard 34 keeps the potatoes in the pocket until they are transferred to the slide. The front portion of the slide is heavy and of boat-like shape so keeping the potatoes spaced along a straight line. The slide is supported by chains 37 ; at the back the support is attached to a lever 38 for lifting or lowering of the slide. A plurality of slides may be held on an adjustable transverse bar, the distance between the slides being variable. Seats 49 are provided behind and above each feed wheel. The potatoes may be supplied from boxes held on the forward part of the frame 42, 43.
Patent GB-180172-A (GB)
Title: Apparatus for transmitting rotary motion from one member to another
IPC: F16H55/10
Filed: 1921-04-22
Abstract: 180,172. Sturgeon, T. R. April 22, 1921. Variable-speed gearing comprises a cam 14 mounted loosely upon an eccentric 13 upon a driving-shaft 6 and connected to an aligned shaft 3, which is driven at reduced speed in the same or in reversed direction. The cam 14 comprises a symmetrical plurality of lobes 15, 16, 17, shaped as circular arcs adapted to coact with rollers 9 - - 12, which are one more in number than the lobes. The rollers 9 - - 12 may be mounted upon a member which is allowed to slip, the shaft 3 being driven at variable speed. The device may alternatively be adapted to yield different speeds by having two or more cams coacting with two or more sets of rollers in revoluble frames which are held against rotation alternatively. The transmission from the eccentricallymoving cam 14 to the shaft 3 may be by an Old. ham coupling, or may take the form of another cam and roller system, the cam differing as to the number of its lobes 18, 19, and the rollers 22, 24 being carried by a frame secured to the shaft 3.
Patent GB-1166401-A (GB)
Title: Improvements relating to Electrodes for High-Pressure Gas and/or Vapour Discharge Lamps
IPC: H01J61/36
Filed: 1967-03-13
Abstract: 1,166,401. Soldering. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 13 March, 1967 [16 March, 1966], No. 11657/67. Heading B3R. [Also in Division H1] A rod-shaped electrode comprises a thoriated tungsten part 1, i.e. containing 0À5 to 5% by weight thorium, joined endto-end to a pure tungsten part 3 solely by means of a soldered joint 2 using a solder consisting of molybdenum or of a molybdenum alloy. The soldered joint is made by placing a molybdenum disc between the adjacent ends of parts 1 and 3 and heating this assembly to above the melting point of molybdenum in a non-oxidizing atmosphere, e.g. argon or a nitrogen hydrogen mixture containing 1-5% by volume of hydrogen, and applying a slight compression between the ends of parts 1 and 3.
Patent GB-1490543-A (GB)
Title: Porous materials
IPC: C04B35/591
Filed: 1975-03-11
Abstract: 1490543 Porous silicon nitride UNITED KINGDOM ATOMIC ENERGY AUTHORITY 11 March 1975 [15 March 1974] 11666/74 Heading ClA [Also in Division C7] Porous silicon nitride is prepared by: (i) preparing a green mixture comprising silicon powder, a binder and an inert, removable additive powder, wherein the additive has a particle size of less than 25 microns; (ii) curing the binder in the mixture; (iii) heating so as to remove the binder; and (iv) firing in a nitriding atmosphere to convert the silicon to silicon nitride and thereby produce the porous silicon nitride; in which method the additive is removed between steps (ii) and (iv). Suitable additives are celluose, amorphous carbon, graphite, and organic plastics. The binder may be a thermoplastic binder or a setting binder or both. Polyvinyl butyral is specified. The mixture may also include a plasticizer (dibutyl phthalate specified) and a solvent for the binder (methyl ethyl ketone specified).
Patent GB-179170-A (GB)
Title: Improvements in or relating to the construction of hollow concrete walls
IPC: E04G11/18
Filed: 1922-04-26
Abstract: 179,170. Eshelby, J'. D. April 26, 1921, [Convention date]. Void [Published under Sect. 91 of the Act]. Moulding walls in situ. - Hollow walls are moulded in situ between shutters supported by crosswires 8 and bolts 13 and distanced by distance-pieces 5 secured by wedges 5<2>. The core shutters 2, 2<1> are lined and have angles 6 at their lower ends through which pass the cross-wires, and distance-pieces 7 at their top ends, and the core is maintained the proper width by steel rods 3 provided with projections or studs 4. To remove the core, the rods are rotated through 90‹, Fig. 4, so that the shutters are freed.
Patent GB-1451104-A (GB)
Title: Polymer dispersions
IPC: C08J5/00
Filed: 1973-03-12
Abstract: 1451104 Heating block or graft copolymer dispersions IMPERIAL CHEMICAL INDUSTRIES Ltd 4 June 1974 [12 March 1973] 11802/73 Addition to 1319448 Headings C3G and C3P A process for converting into a homogenous solid mass a concentrated fluid dispersion of spherical aggregates of an amphipathic block or graft copolymer in a hemi-solvent comprises the steps of (i) heating the concentrated dispersion, without significant charge in the concentration of the copolymer in the hemi-solvent, to a temperature above the environmental glass transition temperature of the components of the copolymer which are insoluble in the hemisolvent and (ii) subsequently cooling the resulting fluid composition to a temperature below the said transition temperature. In step (i) the dispersion is preferably heated to a temperature at least 100‹ C., above the said environmental glass temperature, or at least 100‹ C. above the bulk glass transition temperature of the said insoluble components of the copolymer. Examples are given in which dispersions prepared from a poly(methyl methacrylate)/poly(12- hydroxystearic acid) graft copolymer and aliphatic hydrocarbons are heated and cooled, the heating and cooling, or the cooling only, being carried out in a mould.
Patent GB-871323-A (GB)
Title: Protective clothing comprising a support material coated with silicone rubber
IPC: D06M15/643
Filed: 1959-04-08
Abstract: 871,323. Coated fabrics. DEUTSCHE GOLD-UND SILBER-SCHEIDEANSTALT. April 8, 1959 [April 17, 1958], No. 11876/59. Class 140. A coated fabric suitable for use in protective clothing comprises a support material, e.g. a knitted or woven fabric, a fleece of cotton or staple fibres, or a glass fibre fabric, having a smooth homogeneous coating of silicone rubber of at least 300 gm. per square metre. The side of the support material not carrying the coating of silcone rubber may be vapour coated with metal or may be lined with a resilient heatresistant foam material. The seams of the protective clothing may be protected by covering strips of silicone rubber and other parts of the clothing may be reinforced with glass fibre fabric coated with silicone rubber.
Patent GB-1383211-A (GB)
Title: Antifog and antispot agents and selective desensitizers for use in photography
IPC: G03C1/34
Filed: 1972-03-14
Abstract: 1383211 Azo compounds MINNESOTA MINING & MFG CO 14 March 1972 [16 March 1971] 11901/72 Heading C2C [Also in Division G2] Compounds of general Formula (I) wherein X represents an N atom or a -CR= group and Y and R which may be the same or different, represent H, alkali metal atom, alkyl, alkylene, aryl or substituted aryl or a solubilizing group, are prepared by treating the appropriate aminotriazole or aminotetrazole with KMnO 4  or NaOCl. The compounds may be used in photography as antifog or antispot agents or as selective densensitizers (see Division G2).
Patent GB-781804-A (GB)
Title: Improvements in or relating to therapeutic compositions comprising castle's intrinsic factor and vitamin b
IPC: A61K31/00
Filed: 1955-04-25
Abstract: Vitamin B12 may be isolated from a streptomycin fermentation and purified by addition of an extract of Castle's intrinsic factor, adding a water-miscible organic solvent until its concentration is 40-60 per cent and separating the precipitated complex.  Specified organic solvents are acetone, methyl ethyl ketone, ethyl, n-propyl, isopropyl and tert. - butyl alcohols The procedure is detailed in Example 5.  U.S.A. Specification 2,595,159 is referred to.ALSO:Hog stomach tissue is extracted with water or with water containing a minor proportion of a water-miscible organic solvent, separating the extract of Castle's intrinsic factor from the insoluble residue, mixing the extract with a B12 Vitamin, precipitating the concentrate by addition of a water-miscible organic solvent to a concentration of 40-60 per cent and separating the resultant precipitate.  The starting material may be fresh frozen whole stomach or stomach mucosa and it may be defatted, desiccated and ground prior to extraction. Specified organic solvents include acetone, methyl ethyl ketone, ethyl alcohol, tert.-butyl alcohol, n- and isopropyl alcohol, and these may be used in the initial extraction in concentrations up to 15 per cent.  The B12 Vitamin may be the pure crystalline material or a crude product such as that from a streptomyces griseus fermentation.  In the latter case the formation of the concentrate of the complex purifies the vitamin (see Group IV (b)).  In an example, fresh-frozen whole hog stomach is ground and extracted with aqueous acetone acidified to pH 5 with hydrochloric acid.  The extract is filtered through infusorial earth, and to the filtrate is added Vitamin B12.  The mixture is cooled to 0 DEG  C. and pre-cooled acetone added until the final concentration is 55 per cent.  The precipitate is centrifuged, suspended in water and lyophilized. U.S.A. Specification 2,595,159 is referred to.
Patent GB-1145253-A (GB)
Title: Time-keeping apparatus
IPC: G04C3/16
Filed: 1966-03-18
Abstract: 1,145,253. Electric timepieces. KIENZLE UHRENFABRIKEN G.m.b.H. March 18, 1966 [March 26, 1965], No. 12007/66. Heading G3T. [Also in Division H2] An electromagnetic mechanical oscillator for a timepiece comprises a rotor having rotatable masses 1, 4 connected by a resilient member 3, the mass 1 having a number of magnetic poles of alternate polarity and a stator 2 which encircles the mass 1 and has a limb on which a drive coil 6 and a pick-up coil 7 are mounted. When the rotor is given an initial rotation, pulses induced in the pick-up coil are amplified by a transistor circuit 8 and fed to the drive coil to produce driving pulses for maintaining the rotation of the rotor. Superposed on its rotational motion is a torsional oscillation of the rotor so that when the frequency of the applied driving pulses equals the natural torsional oscillation frequency, the rotor speed stabilizes at the rotational speed corresponding to this frequency. As shown the member 3 comprises a torsion shaft but a hair spring or arrangements of leaf-springs may be used. An output drive pinion 5 is provided. In order to ensure that the rotor has a preferred direction of rotation, a toothed disc of soft iron, which may be the mass 4, is mounted on the rotor and co-operates with a fixed multi-polar permanent magnet, the teeth of the disc being slightly offset with respect to the poles of the magnet.