baber/WOPTO huggingface dataset:
Patent GB-1224718-A (GB)
Title: Separation of neptunium from uranium hexafluoride containing the same
IPC: C22B60/02
Filed: 1970-02-23
Abstract: 1,224,718. Separation of neptunium. UNITED STATES ATOMIC ENERGY COMMISSION. 23 Feb., 1970 [11 March, 1969], No. 8524/70. Heading G6R. Neptunium is removed from uranium hexafluoride derived from the processing of spent nuclear reactor fuels. The uranium hexafluoride, containing neptunium hexafluoride, is passed through a bed of cobaltous fluoride pellets at a temperature of 220‹ to 440‹ F., where the neptunium hexafluoride is reduced to non-volatile neptunium tetrafluoride. The neptunium is removed from the cobaltous fluoride bed by the passage of fluorine gas through the bed at 500‹ to 700‹ F. to reconvert the neptunium to gaseous neptunium hexafluoride.
Patent GB-688638-A (GB)
Title: Improvements in and relating to heat exchange apparatus
IPC: F28F1/02
Filed: 1950-04-05
Abstract: 688,638. Heat-exchangers. AIR PREHEATER CORPORATION. April 5, 1950 [June 25, 1949], No. 8543/50. Classes 64 (i) and 64 (iii) A heat-exchanger comprises tiers of tubular elements 13 for the passage therethrough of a fluid to be heated (e.g. air) spaced apart to form passages 18 between adjacent tiers for a heating fluid (e.g. hot gas), secondary heating surfaces in the form of metallic wires 21 extending between adjacent tiers in contact with the tubular elements and an inlet header 15 and an outlet header for the fluid to be heated being connected with the ends of the tubular elements. The tiers may be parallel to one another as shown in Fig. 1 or they may extend radially from a common axis as shown in Fig. 5. The individual tubular elements may be of rectangular, circular or oval cross section and may have internal fins subdividing the interior of the tube. The individual tubular elements may comprise groups of tubes bonded together Fig. 4 (not shown).
Patent GB-1475490-A (GB)
Title: Filling tube-type electrodes for lead storage batteries
IPC: H01M4/16
Filed: 1976-03-03
Abstract: 1475490 Filling material for tube electrodes for lead batteries VARTA BATTERIE AG 3 March 1976 [7 March 1975] 08545/76 Heading H1B Tube type electrodes containing lead cores for lead storage batteries are filled with a pasty active material comprising a mixture of lead oxides, sulphuric acid and fibres of an electrolyte resistant material so that part of the liquid passes through the tube walls and some of the fibres enter into and cover the pores of the electrode walls to partially close the pores. The pasty active material may comprise 100-600 cc's of water, 5-130 cc's of H 2 SO 4  of density 1À4 grams/cm<SP>3</SP> per kilogram of paste and the fibres may be glass fibre, polyester or polyethylene, may have a rough fissured surface, may be of length 0À5-6 mm and diameter 0À5 Á to 30 Á and may be present in an amount of 0.1 to 2 per cent by wt. based on the weight of lead oxides.
Patent GB-541965-A (GB)
Title: Improvements in the treatment of wool to reduce felting and shrinking
Filed: 1940-05-13
Abstract: 541,965. Treating textiles with liquids. TOOTAL BROADHURST LEE CO., Ltd., CROWDER, N. F., and MARSH, J. T. May 13, 1940, Nos. 8569 and 12834. [Class 15 (ii)] Wool or other animal hair fibre is subjected to vigorous treatment with a reducing agent more powerful than sodium sulphite or bisulphite in such manner that the felting properties are reduced by at least 25 per cent. The wool may be in the form of loose fibres or in yarn or fabric form. It may have been subjected to scouring, bleaching, dyeing, hot pressing, or milling. The vigorous treatment usually involves treatment at a high temperature or prolonged treatment at low temperatures. The reducing agent may be stannous chloride, titanous chloride or sulphate, sodium hydrosulphite, sodium hypophosphite, or hypophosphorous acid. It may be used in solution in water or in an organic liquid or a mixture of organic liquids one of which is a solvent for the reducing agent, the other being a non- solvent diluent. In an example, knitted wool fabric is immersed in a solution of stannous chloride in 2 N hydrochloric -acid for a few hours at 70‹ C. or for one to three days at room temperature. Alternatively, the stannous chloride may be used in solution in water or in aqueous solutions of alcohol, sodium chloride or sodium sulphate, or in non-aqueous solutions, e.g. butyl alcohol or other alcohol in presence if desired of a diluent such as white spirit. In another example titanous chloride solution is shaken with zinc-mercury amalgam until the salt is completely reduced. The titanium trichloride in 2 N hydrochloric acid is used for the treatment of knitted wool fabric. The Provisional Specifications specify also sodium or potassium cyanide as a reducing agent.
Patent GB-1000598-A (GB)
Title: Method and apparatus for producing cast-in-place pile shells
Inventor: PHARES LINSEY JAMES
IPC: E02D5/44
Filed: 1963-03-04
Abstract: 1,000,598. Piles. RAYMOND INTERNATIONAL Inc. March 4, 1963, No. 8626/63. Heading E1H. A method of forming a concrete pile shell comprises driving a casing 10 into the ground, the casing having an internally disposed sealing ring 15 adjacent its base to slidably receive a mandrel 21, withdrawing the casing 10, leaving the mandrel 21 in the ground, injecting liquid concrete through the pipe 18 into the space below the ring 15 voided as the casing is withdrawn, and upon complete withdrawal of the casing 10 and hardening of the concrete withdrawing the mandrel. The shell is then inspected and filled with concrete. The ring 15 has a tube skirt 14 depending from it to define with the casing 10 a chamber 16 into which the concrete is injected, a rubber sleeve 22 sealing the tube 14 to the mandrel 21. The casing 10 has a boot 12 of a greater diameter so as to provide a cavity 26 between the casing 10 and the ground 25 which is filled with concrete. A release casting material is applied to the mandrel for minimizing adherence to the concrete. A further embodiment describes two sealing rings each having tubular skirts extending in opposite directions and welded to the inside of the casing with a gasket of, e.g., rubber interposed between the rings. The liquid concrete feed pipe is also disposed outside the casing. The arrangement can be used to form pile shells having bottom bulbs. The mandrel may be tapered or collapsible. The Specification also describes a pneumatic comparator for indicating the pressure at which the liquid concrete is fed into the casing chamber and also an apparatus for indicating and controlling the volume of liquid concrete fed into the shell. Specifications 862,703 and 954,842 are referred to.
Patent GB-542215-A (GB)
Title: Improvements in or relating to method of coating undesirably pure monocalcium phosphate for heat treatment, and the product resulting therefrom
IPC: E04B2/28
Filed: 1940-05-14
Abstract: 542,215. Anhydrous monocalcium phosphate. STEVENS, A. H. May 14, 1940, No. 8670. Convention date, May 15, 1939. Addition to 518,738. [Class 1 (iii)] [Also in Group VI] Anhydrous heat-treated monocalcium phosphate is made with a thin, glassy, substantially complete and pyrophosphate-free, relatively insoluble coating, by adding to crystalline monocalcium phosphate a thin superficial layer of an alkali metal or ammonium hydroxide, phosphate, carbonate, sulphate, chloride, or other compound capable of re-acting therewith to form such coating, e.g. by adding potassium hydroxide in alcoholic solution or other form such that there is no substantial absorption of water by the monocalcium phosphate, which may be anhydrous, and heating, e.g. after evaporation of the alcohol at 125‹ C. for one hour at 205‹C. to form the coat ing. The amount of potassium hydroxide may be about 0.1 to 1 per cent. and coatings may be treated with 64.8‹ BÚ. phosphoric acid, or free acid may be provided in the monocalcium phosphate and neutralized with potassium carbonate, or the method disclosed in Specification 518,737 may be used and the desired coating-forming impurities added in the water sprayed on the hot re-action mass. Specification 518,738 is referred to.
Patent GB-398879-A (GB)
Title: Improvements in tilting boiling pans and the like
IPC: B01D1/30
Filed: 1932-03-23
Abstract: 398,879. Boiling-pans. KERN, F. B., 36, Revell Road, and FRENCH, T. E., 12, Revell Road, Coombe Lane, Kingston, Surrey, and ALUMINIUM PLANT & VESSEL CO., Ltd., Point Pleasant, Wandsworth, London. March 23, 1932, No. 8676. [Class 64 (i).] A boiling-pan 1 with an open top is fitted with a heater 2 supported therein by trunnions 3 extending through the sides of the pan and connecting with the inlet and outlet pipes 5, 6 of the heating medium, the pan being so mounted on the trunnions as to tilt independently of the heater. The steam heater is formed as one or more plates or may be annular or consist of a closed vessel with top and bottom tube plates 11, 12 to which are attached open-ended tubes 13 which may be inclined or splay-mouthed. The pan is of aluminium and the bearing surfaces 7 are short. A baffle 14 is provided round the condensate outlet of the heater.
Patent GB-268958-A (GB)
Title: Improvements in or relating to electric arc lamps
IPC: H05B31/00
Filed: 1926-03-31
Abstract: 268,958. Boardman, R. V. March 31, 1926. Arc lamps. - A hand - fed or automatic lamp suitable for therapeutic use, &c., is provided with a multi-contact switch that is automatically controlled by the feed - mechanism so as to insert increasing resistance in series with the lamp as the electrodes are brought together. As shown, the switch arm e moving over contact studs f is attached or connected to a pivoted frame c carrying clutches d operating the two upper electrodes. Resistances connected to the studs are arranged in a casing at the foot of the lampstand. The frame c is operated by a spring- controlled plunger l and link k. Alternatively, the switch arm may make direct contact with the resistance. A Bowden or like cable mav connect a remote regulating handle, also forming a switch arm, to the clutch mechanism.
Patent GB-1424039-A (GB)
Title: Novolak filaments
IPC: D01F9/24
Filed: 1973-02-22
Abstract: 1424039 Ion-exchange KANEBO Ltd and NIPPON KYNOL Inc 22 Feb 1973 [22 Feb 1972 24 Feb 1972 26 Feb 1972] 8811/73 Heading B1J [Also in Divisions B5 and C1] A hollow ion-exchange filament comprises an external tubular portion surrounding a hollow core, the tubular portion comprising a fibre-forming polymer containing a major proportion of a cured novolak resin, and having a cross-sectional area occupying from 20 to 90% of the total cross-sectional area of the filament, especially 40 to 70% thereof. The fibre-forming polymer may comprise more than 50% by weight of a novolak resin and less than 50% by weight of a fibre-forming thermoplastic synthetic resin, e.g. a polyamide, polyester, polyesterether, polyolefine or polyurethane. The filaments are made by treating a filament consisting of a fibre-forming polymer containing a major proportion of an uncured novolak resin composition, with a curing reagent in the presence of a curing catalyst to cure the filament from the peripheral portion to a depth of 20-90% especially 40-70% of the cross-sectional area of the filament, and thereafter removing the uncured core portion of said filament by extraction with a solvent, and introducing an ion-exchangeable group e.g. sulphonic acid, carboxyl, ammonium, primary, secondary or tertiary amino, quaternary ammonium, hydroxyl or halogen into the hollow filament so made. Thus the hollow filament may be heat-treated with a sulphonating agent, a carboxyl group introduced by reacting the filament with a carboxyl-group containing halide, lactone or oxyacid, or reacting with an amino acid ester at a temperature of at least 80‹C and then hydrolysing the reaction product with an alkali. Amino groups may be introduced by treatment with a haloalkylation agent followed by treatment with an amination agent, suitably at 100-180‹C. Haloalkylation agents preferred include monohalo-alkyl ethers and dihaloalkyl ethers, each containing a C 1  to C 4  alkyl residue. Amination agents include ammonia, C 1  to C 4  monoalkylamines, C 1  to C 4  monoalkanolamines, C 2  to C 8  dialkylamines, C 2  to C 8  dialkanolamines, C 3  to C 12  trialkylamines, C 3  to C 12  trialkanolamines, C 2  to C 9  polyalkylenepolyamines and N-alkyl substituted products thereof. In Examples, the filaments are packed into vertical glass columns and used for various ion-exchange processes.
Patent GB-925821-A (GB)
Title: Improvements in or relating to optical elements
Inventor: BEECH SAMUEL ROBERT
IPC: B29D11/00
Filed: 1961-03-10
Abstract: A preform for a synthetic resin optical element is cast in a mould having a die with a surface corresponding to one of the surfaces required of the preform and thereafter the other surface of the preform is formed by mechanical working.  The optical element is then obtained by compression moulding the preform between two optically accurate dies.  The material of the preform may be a thermoplastic synthetic resin, or a polymerizable material which, when fully polymerized, has thermosetting properties, but which, when partially polymerized, is solid and can be shaped under heat and pressure; for example, the material may be methyl methacrylate, or a mixture of methyl methacrylate with alkyl methacrylate, die-ethylene glycol bis (allyl carbonate) or tri-allyl cyanurate.  In casting the preform of a bifocal lens an open mould is used having a die with a surface corresponding to that surface of the lens on which the bifocal segment is located.  A flexible cover is floated on a casting solution of methyl methacrylate in dibenzoyl peroxide to prevent evaporation losses.  This cover may be made of the same material as the casting material and hence form an integral part of the moulded element.  Specification 556,743 is referred to.
Patent GB-1447569-A (GB)
Title: Seals
IPC: B63H23/36
Filed: 1974-02-27
Abstract: 1447569 Seals GLACIER METAL CO Ltd 27 Feb 1975 [27 Feb 1974] 8850/74 Heading F2B On tightening split soft iron collet 4, by means of bolts 7, O-ring 5 seals the space 15, between sleeve 2 and the shaft 12 of a ship's propeller, against the ingress of bearing lubricant. A pair of O-rings 3 seal the rearward end of the space 15. The space 15 may be pressurised (Fig. 2, not shown) to test the effectiveness of the seals 3 and 5. Secondary sealing is provided for face seals 35, 36, at 42.
Patent GB-1381046-A (GB)
Title: Hosiery yarns and fabrics
IPC: D02G3/26
Filed: 1972-02-25
Abstract: 1381046 Yarns IMPERIAL CHEMICAL INDUSTRIES Ltd 25 Feb 1972 8864/72 Heading D1W An uncrimped, polyamide, monofilament, hosiery yarn e.g. of 15-35 decitex, is twisted to give a decitex torque time product of not more than 750 e.g. 650-700, and may subsequently be knitted with alternate S and Z twist rows. Torque time is defined as the time in seconds taken by a skim of 10 wraps of the yarn of 150 cms circumference suspended under a load of 100 gms to detwist through 10 revolutions, measured after a lag of 48 hours of the yarn on a wound package. In described examples, undrawn yarn of circular cross section is fed by rollers around a circular 4 inch diameter pin heated to 230‹C and through a friction false twist device rotated at 15,750 r.p.m. (as described in U.K. Patent Specification No 797051) to draw rollers rotating at a peripheral speed of 1750 feet/minute, the draw ratio being 4.0 and some twist running back through the drawing zone to the feed rollers. Yarn is taken-up by conventional ring and traveller and wound under a tension of 1 gm, and may be further heated under controlled tension (to modify its final torque characteristics) before or after winding into a package.
Patent GB-125948-A (GB)
Title: Improvements in Electric Signalling Apparatus for Cars on Electric and other Railways.
Inventor: SCHAUB HANS
IPC: B61L15/00
Filed: 1919-04-08
Abstract: 125,948. Schaub, H., and Kunzli, C. April 23, 1918, [Convention date]. Signalling on trains.-Electric lamps on the driver's platform of a train are energized or extinguished by switches on any vehicle of the train. Fig. 6 shows an arrangement of two-way switches l<1>, l<2>, l<3>, l<4>, controlling lamps e<4>, e<5>, i<3>, i' on the drivers' platforms, and other lamps e<1>, e<2>, e<3>, i<1>, i<2>, i<5> on the cars serving as check lamps. The arrangement enables a signal given by one switch on a car to be cancelled by operating the other switch on the same car. The lamps i<1>, i<2>, i<3>, i<4> may be controlled by switches on any number of cars. In a modified installation, one-way switches are used in parallel on each car. The switches described comprise vessels of mercury mounted on a rocking spindle 3 moved by rods 6 and cranks 4, the rocking spindle passing through the end wall of a vehicle so as to be operable from inside or outside the vehicle. The single-way switch has a cylindrical tube 8 strapped to the end 7 of the spindle 3, and closed by studs 11 forming terminal contacts. The twoway switch consists of an insulating plate 16 with channels 17, 18 partially filled with mercury and closed by studs 11, 11<1>, 11<2> forming terminals. A square slot is provided to fit on to the squared end of the spindle 3.
Patent GB-218008-A (GB)
Title: Improvements in and relating to furnace fire-grates
IPC: F23H13/00
Filed: 1923-03-29
Abstract: 218,008. Kent, C., and Dimelow, J. March 29, 1923. Fire-bars.-The rear ends f<1> of the fire-bars f of a furnace grate are extended upwardly above the fuel surface f<2> of the grate, and are provided with projections f<3> to rest on or engage with the firebridge e. Reference has been directed by the Comptroller to Specifications 4734/82 and 15131/86.
Patent GB-182174-A (GB)
Title: An adjustable stenter clip
IPC: D06C3/04
Filed: 1921-03-23
Abstract: 182,174. Harrap, W. H., Whitehouse, W. R., and Portlock, A. H. March 23, 1921. Tentering.-A tenter clip, comprising a link portion C of a chain, is designed so that the pivoted dropper F can, when it wears a groove in a surface G with which it contacts, be moved to contact with another part of this surface, and so that the dropper can be removed for repair thereof and for renewal of the surface G. The dropper F is carried by a fork A on a plunger B, which is vertically adjustable by a screw H in a bearer J, and is locked after adjustment by a screw D.
Patent GB-955232-A (GB)
Title: Improvements in or relating to the preparation of macromolecular polymethylene terephthalates
IPC: C08G63/87
Filed: 1962-03-08
Abstract: In the manufacture of polymethylene terephthalates by effecting an ester-interchange reaction between an ester of terephthalic acid and a glycol containing 2 to 10 carbon atoms and polymerizing the resulting bis-(hydroxyalkyl) terephthalate, there is used as a catalyst, at least for the ester-interchange reaction, a guanidine compound in which one or more hydrogen atoms of the guanidine molecule have been substituted by alkyl groups containing up to 8 carbon atoms. In an example, polyethylene terephthalate was made by reacting dimethyl terephthalate with ethylene glycol in the presence of tetramethyl guanidine and polymerizing the product after the addition of antimony oxide.
Patent GB-313668-A (GB)
Title: Improvements in or relating to electric plugs
IPC: H01R13/58
Filed: 1928-03-26
Abstract: 313,668. Line, W. J. March 26, 1928. Plug couplings of the type described in Specification 268,433 having relatively adjustable parts between which apertures of various sizes are formed one of more of which can be used for the passage of the conductors, are provided with a shutter that can be moved independently of the other parts to close the apertures that are not in use. The shutter may consist of a spring ring 17, 18 applied inside or outside the annular wall 1 in which the apertures 5 - - 10 are formed. Or the ring may be rigid and formed with a flange so as to be secured by the screws that enter holes 3 and secure the parts of the plug together. In this case the shutter may be made in two segments. A disc against which the wall 1 fits, and which may have corrugations formed thereon to assist in gripping the conductors, carries the terminals that lie in an annular space 11 and are separated by a pillar 12 or by a loose member 30, Fig. 12, having spaces 30a, 30<b> for the terminals and channels 33, 34 for the conductors. The member 30 may be attached to the cover of the fitting, if this is made separate from the wall 1, or to the shutter.
Patent GB-564084-A (GB)
Title: Improvements relating to supply systems operating with mercury arc rectifiers and supplying loads capable of regenerative operation
IPC: H02H7/12
Filed: 1943-06-05
Abstract: 564,084. Rectifying alternating current. HEWITTIC ELECTRIC CO., Ltd., MARTIN, L. J., and WELLS, R. June 5, 1943, No. 9058. [Class 38 (ii)] In a supply system in which a mercury arc rectifier 11 supplies current to a regenerative load and is associated with an absorber resistance 14 rendered operative by a grid-controlled electronic switch 13 under regenerative conditions, the negative grid potential normally effective to block the electronic switch is derived from the interphase transformer 12 of the system. The voltage normally appearing across the interphase transformer is applied through a transformer 23 and rectifier. (which may comprise auxiliary anodes in the main rectifier 13, as shown, or a 'separate auxiliary rectifier) and a potentiometer 17 from which the grid potential is tapped. On cessation of load current prior to reversal at regeneration, the blocking bias fails due to collapse of the interphase transformer voltage and the tube 13 becomes conductive. Reverse current relay 20 subsequently closes energizing relay 19, closing of which short-circuits tube 13. On cessation of regenerative conditions, relay 19 opens, and, as tube 13 has its blocking bias restored, the resistance 14 is disconnected.
Patent GB-221166-A (GB)
Title: Improvements in convertible vehicles
IPC: B62B1/20
Filed: 1924-04-09
Abstract: 221,166. Bethlehem Steel Co., (Assignees of Julstedt, C. J.). Oct. 23, 1923, [Convention date]. Field carriages. - A vehicle convertible from the wheelbarrow to the cart type and vice versa is adapted to serve as a mount for mobile artillery of small calibre. The vehicle comprises a pair of handle members 10 provided with projections 11 pivoted together at 12 and with links 23, 24 which are pivoted to the handle members at 25, 26. The links overlap each other to retain the handle members in the wheelbarrow position of Fig. 1 or cross one another to secure them in the cart position of Fig. 3. The wheeds 14 are mounted on swivel members 13 pivoted at 18 in the forked ends 16 of the handle members 10 to adapt them to be turned from their juxtaposed position of Fig. 1 to the separated position of Fig. 3, pins 21 passing through holes in the forked ends 16 and in the swivel members 13 to secure them in either position. To convert the vehicle to a gun mounting the handle members are opened from the cart position without the wheels being turned. relatively to the handle members.
Patent GB-1184744-A (GB)
Title: A Drip Mat
Inventor: PORTER JOHN DENNIS
IPC: A47G23/03
Filed: 1967-02-24
Abstract: 1,184,744. A drip mat. DENNIS PORTER Ltd. 16 Jan., 1968 [24 Feb., 1967], No. 9075/67. Heading A4A. A drip mat is composed of absorbent material and has an aperture formed therethrough, the aperture being so dimensioned that the tapered neck of a bottle for which the mat is intended may be inserted into the aperture and tightly engaged at some point along the neck by the perimeter of such aperture, whereby any liquid running down the neck of a bottle whilst liquid is being poured from the bottle is intercepted and absorbed by the drip mat. An exemplary drip mat is composed of cardboard and is the form of a disc having a centrally disposed circular aperture.