baber/WOPTO huggingface dataset:
Patent GB-834360-A (GB)
Title: Uranium recovery process
Inventor: YEAGER JAMES HAROLD
IPC: C22B60/02
Filed: 1957-12-23
Abstract: Uranium values are recovered from uranium-containing solid materials by digesting the materials in a strongly-ionizing acid to form a slurry, and contacting the slurry with a substantially water-immiscible organic solvent, whereby the uranium values are extracted into the organic phase.  The preferred acid is nitric acid. As organic solvent there may be employed an ether, nitromethane, ethyl benzoate, or an alkyl phosphate, and especially tributylphosphate, preferably in an organic diluent, such as naphtha or kerosene.  The solvent may have an acid content up to 5N, but in the case of diethyl ether, the acid content should be from 0 to 1N and the slurry should have an excess acid content ranging from zero to that which will give a pH of 1, with acid-free ether, the addition of iron ions to the slurry improves the extraction.  The uranium values may be recovered from the organic phase by extraction with an aqueous medium, preferably water at 50-100 DEG  C.  The aqueous solution thus obtained may be evaporated to give the solid salt (uranyl nitrate hexahydrate if nitric acid is employed in the digestion), which may be heated to give uranium oxide.  Specification 414,734 is referred to.
Patent GB-1314437-A (GB)
Title: Numerical display systems
IPC: G01D7/00
Filed: 1970-08-21
Abstract: 1314437 Digital displays GENERAL ELECTRIC CO 21 Aug 1970 [21 Aug 1969] 40361/70 Heading G4H  A system for displaying a numerical representation of a variable input comprises a display device, a comparator arranged to periodically compare a selected digit, e.g. the least significant bit, of a coded signal representing the present input with the corresponding bit of the coded signal currently being displayed, a change in the displayed numeral being inhibited when the bits are different and allowed when they are the same, means also being provided to allow a new value to be displayed at regular intervals by an independent updating circuit. The invention is aimed at reducing the flutter of the lowest displayed digit in a system where a variable is being displayed in digital form. Spurious signals often cause the lowest digit to change rapidly from one value to the next and back again. To prevent this the circuit is arranged to allow a new value from converter 3 to enter the display register 10 only when a change of two units (or 4, 6 &c. units) has taken place. Odd valued changes (1, 3 &c.) do not allow a change. Flutter, which is due to rapid changes of 1, is therefore prevented. Update circuit 13 gives regular signals to register 10 allowing the new value to be displayed. The input value from transducer 1 is converted to frecuency and sampled by switch 5 at regular intervals. The samples are converted to binary scale at 3 and appear on four leads 6, 7, 8, 9. Lead 9 has the value "1" and is connected to comparator 12. The register, enabled by a signal at L is connected to a digital-to-numerical converter 11. The "1" output from the register is also connected to the comparator and the output of the comparator is connected to the control input L.
Patent GB-862316-A (GB)
Title: Improvements in or relating to hydraulic shock absorbers
IPC: F16F9/28
Filed: 1958-12-30
Abstract: 862,316. Adjustable shock absorbers. MAY, H., and WOOD, H. C. Dec. 16, 1959 [Dec. 16, 1958], No. 40473/58. Class 108(3). A lever-type shock absorber has two spring- controlled pistons in intercommunicating cylinders flow between which is regulated by spring-controlled valves, the rebound spring having means for manual adjustment. In Fig. 1 a casing 1 contains a pair of pistons 3 provided with bleed valves 9 and control springs 10 in parallel bores operated by round-ended connecting rods 4 and rocker arm 5 connected to an operating lever by shaft 6. Fluid flow between the cylinders is through valve 13, Fig. 2, on the compression stroke and through valve 12 on rebound regulated by springs 15 and 14. Within plug 19 are the adjusting means comprising screw 21 bearing against non- rotatable pin 17 the head 16 of which forms a seat for spring 14. Inter-engaging ridge 26 on pin 17 and recess 27 on 'the screw click into engagement when the screw is rotated to give an indication of the progress of adjustment. A knurled external head to screw 21, visual guide means and/or a removable cover 28 may be provided.
Patent GB-969622-A (GB)
Title: A method and apparatus for crimping, packaging and treating textile fibers
IPC: D06B23/00
Filed: 1960-11-24
Abstract: 969,622. Spinning, finishing and winding yarns. JOSEPH BANCROFT & SONS CO. Nov. 24, 1960 [Dec. 21, 1959], No. 40477/60. Headings D1F and D1J. Fibres in continuous filamentary form e.g. tow or yarn, are crimped and packaged by apparatus comprising rolls feeding the fibres into the inlet end of a tube (constituting a crimping chamber) against a mass of previously crimped fibres held compacted therein and exerting pressure for advancing the mass along the tube to the discharge end where the mass emerges as a continuous core corresponding to the bore of the tube. The core is wound on to a support with, and is held and compacted by, a separating tape in successive convolutions therewith. The package may be processed to set the crimp by the method described in Specification 969,625 and it is then unwound e.g. by the apparatus described in Specification 969,624, to remove or expose the core. The tow or yarn may be pulled from the core and directly wound or packaged. As shown, material 20 to be crimped is advanced through a pretreating tank 22 and a drier 24 thence through a tension device 25 and guide 26 to spring-loaded, adjustably-driven feed rolls 10 and 11 which force the material into a tube 4 removably mounted in a heating and crimping block 2. Tube 4 extends, by means of a pivoted feed tube 33, to a position where the core 40 discharging at the arcuate surface 39 may be wound with a tape 50 on to a package 41. The package is wound on a sock 66 (which also forms a confining cover for the completed package) positioned over a perforated tube 42 carried by a sleeve 43 slidably mounted on, and keyed to a shaft 44 driven from a gearbox 46 through a constant torque clutch: a cam 47 actuates a traversing slide 48 which reciprocates sleeve 43 for laying the core in successive convolutions and layers. The tape 50 supplied from a reel 51 passes through a forked arm 54, to a rough surfaced feed and control roll 55, around a pin 56, over a pivoted lever 57, thence over guide roll 58 to meet the core 40 at the end of tube 33: lever 57 carries an arm 61 which, in the event of a break or failure of the tape supply, actuates a microswitch 62 to stop the entire apparatus, although this operation may be manually suspended during a starting or heating period.
Patent GB-902396-A (GB)
Title: Dyestuffs of the 2:3-phthaloyl-pyrrocoline series and process for their manufacture
IPC: C08K5/3437
Filed: 1960-11-24
Abstract: Viscose, cellulose ethers and esters, polyamides and polyurethanes are spin-dyed, and solutions and products of acetyl-cellulose and nitrocellulose, condensation resins such as aminoplasts and phenoplasts and polymerization resins such as p  polyvinyl chloride, polyethylene, polypropylene and polystyrene and silicone resins are coloured by dyestuffs of the formula:-  <FORM:0902396/IV(a)/1> where R1 and R2 are each hydrogen or halogen, R3 is hydrogen or alkyl, "Aryl" is an aryl residue, X is a bridging atom or group and "Aryl" and X are free from groups imparting solubility in water.  In Examples (4) polyvinyl chloride, dioctyl phthalate, a pigment of the above formula and, optionally, titanium dioxide are mixed and rolled to a ruby foil; and (5) an alkyd-melamine stoving lacquer, titanium dioxide and a pigment of the above formula are ground to obtain a ruby lacquer.ALSO:The invention comprises dyes of the formula:-<FORM:0902396/IV (b)/1> where R1 and R2 are each hydrogen or halogen, R3 is hydrogen or alkyl of at most 4 carbon atoms, "Aryl" is an aryl residue free from groups imparting solubility in water and X is a bridging atom or group free from groups imparting solubility in water.  The dyes are made by condensing at an elevated temperature two mols of a halide of an acid of the formula:- <FORM:0902396/IV (b)/2> with one mol of a diamine of the formula: -H2N-Aryl-X-Aryl-NH2.  Values specified for X are -O-, -S-, -NH-, -N = N-, -NHCO-, -NHCONH-, -SO-, -SO2-, -SO2CH2-, -CH2-, -CO-, -C(CH3)2-, -CH2CH2-, -CH = CH-, -OCH2CH2O-,  <FORM:0902396/IV (b)/3> <FORM:0902396/IV (b)/4> Examples are given.  The dyestuffs vat-dye cellulose, animal and synthetic fibres such as wool, silk and polyamides and polyesters, are used for pigment printing, mass-dyeing and for colouring lacquers and other products (see Groups IV(a) and VIII).  The sulphonated dyes dye animal fibres.  Red to blue shades are obtained.
Patent GB-1429976-A (GB)
Title: Production of an optically active enantiomorph of an amino acid
IPC: C12P13/22
Filed: 1973-08-29
Abstract: 1429976 Preparation of optically active amino acids AJINOMOTO CO Inc 29 Aug 1973 [31 Aug 1972] 40745/73 Heading C2C One optically active enantiomorph of an amino acid is obtained from a salt of an N- acylamino derivative of the amino acid in racemic form by the following steps which may be effected successively or contemporaneously: (a) contacting the said salt dissolved in an aqueous medium with an effective amount of an acylase capable of selectively deacylating the salt of the N-acyl derivative of said one enantiomorph, until said one enantiomorph is formed by said acylase simultaneously with the formation of an equimolar amount of the salt of the N-acyl derivative of the other enantiomorph of the amino acid; (b) contacting the aqueous medium containing the acylase with crystals of the salt of the N-acyl derivative of the amino acid in racemic form, until at least some of the salt of the N-acyl derivative of the one enantiomorph in the crystals is dissolved into the aqueous medium, and the residual crystals are enriched with the salt of the N-acyl derivative of the other enantiomorph; and (c) recovering from the aqueous medium the one enantiomorph in pure form; wherein the solubility in water of the salt of the N-acyl derivative of the amino acid in racemic form is greater than the individual solubilities in water of the salts of the N-acyl derivatives of the optically active enantiomorphs of the amino acid, and wherein the base moiety of the salt of the N-acyl derivative of the amino acid is free of deleterious influence on the deacylating activity of the acylase. Specified amino-acids which may be obtained in this manner are phenylalanine, tryptophan, methionine, valine, phenylglycine and 2,4-(methylenedioxy)-phenylalanine. The base moiety of the salt may be NH 3 , C 2 H 5 NH 2  or cyclohexylamine. In one embodiment, when step (c) is effected after, or contemporaneously with, step (b), the one enantiomorph and the enriched residual crystals are jointly removed from the aqueous medium as a mixture, and the removed enantiomorph thereafter is separated from the remainder of said mixture.
Patent GB-1071461-A (GB)
Title: Improvements in and relating to the toe closing of stockings
Inventor: PARKER WALTER
IPC: D05B23/00
Filed: 1962-05-16
Abstract: 1,071,461. Seaming. BALLITO HOSIERY MILLS Ltd. Aug. 16, 1963 [May 16, 1962], No. 40962/61. Heading B5K. [Also in Division D1] Apparatus for closing the toe of a circularlyknitted stocking comprises a stocking-inspection form, means associated with a free end of said form for presenting the open toe of a stocking tube thereon for seaming, and a seaming unit mounted for movement along a predetermined path adjacent said free end in order to seam the toe of the stocking. Seaming may be effected either by stitching, see Division D, or by welding or gluing.
Patent GB-1166548-A (GB)
Title: Grinding and Screening Installation, more particularly for Cement
IPC: B02C21/00
Filed: 1967-09-07
Abstract: 1,166,548. Grinding cement. ESCHER WYSS A.G. 7 Sept., 1967 i[31 Oct., 1966], No. 41022/67. Heading B2A. A grinding and screening system for cement has at least one mill 1 and at least two screening apparatuses 2, 3, at least one of which is connected into the closed circuit of the or one of the mills. Connecting conduits and operatable shut-off devices or valves 9, 11, make it possible for the fires sides of at least two screening apparatuses to be connected selectively in parallel, Fig. 1, or in series, Fig. 2, relatively to one another. Material is fed from the mill 1 by a bucket elevator 5. Further embodiments include a coarse mill 13. and additional screening apparatus. With valves 11, 29, 49, Fig. 4, in their opposite position to that of Fig. 4, the fires sides of the screens 2, 3, 24 are in parallel and the screens 2, 3 are connected upstream of the mill 1 and the screens 24 in the mill closed circuit. With the valves in the position of Fig. 4 and elevator 11-2 working, the screens 2, 3 and 24, 3 have their fires sides connected in series, the screen 2 being upstream of the mill and the screens 3, 24 in the closed circuit of the mill.
Patent GB-1525123-A (GB)
Title: Food binding agent
IPC: A23L29/231
Filed: 1975-10-08
Abstract: 1525123 Pectinaceous thickening agents MARS Ltd 8 Oct 1975 [8 Oct 1974] 41120/75 Heading A2B Food products having aqueous phases are gelled or thickened by a crude pectinaceous material having a degree of esterification below 20%, the aqueous phase having a pH of 2.5 up to 5.0, or in the case of milk products, up to 7.5, the crude pectinaceous material being untreated and not removed from its cellulose carrier material, save for treatment to reduce its degree of esterification. The food products to which the gelling agent may be applied include pet foods, brawns, yoghurt, ice cream, and ice lollies.
Patent GB-1479710-A (GB)
Title: Electrophoresis slide mounting means
IPC: G01N27/26
Filed: 1975-10-08
Abstract: 1479710 Support for electro-phoresis slides MILLIPORE CORP 8 Oct 1975 [4 Nov 1974]  41158/75 Heading C7B A slide mounting block in electro-phoresis migration apparatus has a concave external surface 13 for receiving and mounting the slide 16, a first slide retaining member 20 of resilient material adjacent one edge of the surface and extending normally therefrom, and a second slide retaining member 26 of rigid material similarly mounted adjacent the opposite edge of the concave surface, whereby a slide may be mounted and held compressed against the surface by the resilient action of the first member. The member 20 may be of silicone elastomer or closed cell rubber. The member 26 and the optional rigid support 24 for member 20 may be glass filled board. The block and overall apparatus may take the form described and claimed in Specification 1479709.
Patent GB-1351691-A (GB)
Title: Electrometallizing gun
IPC: C23C4/131
Filed: 1971-09-03
Abstract: 1351691 Electrometallizing spray gun KOVFINIS NARODNI PODNIK 3 Sept 1971 [4 Sept 1970] 41292/71 Heading B2F An electrometallizing gun has a nozzle with a through hole for a propellant gas stream, two passages communicating with the through hole, each containing a wire to be melted, and two guides outside of the through hole through which the wires are faced in the direction of the passages, the passages being so designed that the wires enter at least partly into the through hole close to its orifice. In the figure, wires 10 are guided through guides 16, which are narrower at the outlet near the orifice than at the inlet, and emerge on paths which intersect in front of the hole 12 near the front head part of the nozzle. The wires partly enter the through hole 12 near the outlet orifice. The wires are supplied with electric voltage at a point not shown and an electric arc thus burns between their ends and melts the metal, which is then sprayed by the stream of propellant gas (air). The air may be supplied as in the figure by a venturi 26.
Patent GB-1047896-A (GB)
Title: Flame-retardant phosphorus compounds
Inventor: WICKINGS JOHN ARTHUR
IPC: C07F9/12
Filed: 1964-10-10
Abstract: Novel adducts are obtained by reacting an halogenated glycidyl ether or ester, e.g. a halogen substituted alkyl, cycloalkyl, aryl or aralkyl glycidyl ether or ester with a phosphorus acid, e.g. orthophosphoric acid.  The reaction may be carried out at a temperature of 50-150 DEG  C. and in the presence of a solvent, e.g. dimethylformamide.  The compounds are useful as flame-retardant components for polyurethane foams (see Division C3) or may be converted into other such components by reacting them with alkylene oxides to give products containing from 1 to 25 moles or more of alkylene oxide per mole of adduct.ALSO:A polymeric composition comprises a rigid or flexible polyurethane foam and a fire retarding additive comprising an adduct obtained by reacting a halogen substituted glycidyl ether or ester, e.g. an alkyl, cycloalkyl, aryl or aralkyl glycidyl ether or ester with a phosphorus acid, e.g. orthophosphoric acid. The additive is stated to be incorporated in the said composition by a reaction involving its hydroxyl groups thus providing a " built in " flame-retarding component.  If desired the adduct may be reacted with an alkylene oxide to give a product having similar fire retarding properties and containing from 1 to 25 moles or more of alkylene oxide per mol. of adduct.
Patent GB-1041240-A (GB)
Title: Improvements in or relating to two-tone colour effects in synthetic fibre fabrics
Inventor: HAWORTH DEREK
IPC: D05C17/02
Filed: 1963-10-22
Abstract: Two-tone effects are produced in piece-dyed woven, knitted, or tufted fabrics by employing synthetic fibres or filaments of two kinds differing in cross-sectional shape and in dye receptivity. The two kinds may be in the same yarn (e.g. plied or core-spun) or in separate yarns.  In an example, a deeper tone is obtained with acid dyestuff on nylon 66 filaments of circular cross-section and higher amine end group content than on trilobal filaments of lower amine end group content.  In another example, the circular filaments are replaced by elliptical filament which are more highly orientated than the trilobal filaments, and the latter are delustered.  In a tufted fabric, higher pile is formed from a yarn where its tone is required to be visible.
Patent GB-928686-A (GB)
Title: Split self-locking washers
IPC: F16B39/24
Filed: 1959-12-08
Abstract: 928,686. Lock-washers. E. JORDAN. Dec. 8, 1959 [Dec. 11, 1958], No. 41630/59. Class 89(1). A lock-washer has twisted locking teeth 26 and two biting edges a<SP>1</SP>, b<SP>1</SP> on opposite sides of gap R and on opposite sides of the washer. The biting edges are inclined relatively to each other and include an angle opening towards the washer centre. The edges may be formed by upsetting the ends adjacent the gap and are stated to prevent spreading of the washer when clamped by a nut. The washer may be made from a straight strip, and may consist of more than a single convolution. Teeth may be provided on only one convolution or on the outside of one and the inside of the next adjacent one.
Patent GB-1194405-A (GB)
Title: Lightweight Inspection Lamp
Inventor: KHAYAT JALAL MICHEL
IPC: F21V21/14
Filed: 1967-09-13
Abstract: 1,194,405. Lamps. J. M. KHAYAT. 13 Sept., 1967 [23 May, 1967; 17 Aug., 1967], No. 41750/67. Heading F4R. A lamp for illuminating the interior of the mouth for dental and like purposes, is supported on a spectacle frame, by a coupling on which the lamp is pivotable. The lamp may consist of a bulb 22 mounted in a reflector 23 which is movably mounted on a threaded cylindrical sleeve 8 into which the bulb 22 is screwed. The rear end of the sleeve is part-spherical and receives a hollow ball having a projecting tail 6 screwed into a plate 4 mounted by hooks 4a on the bridge of a pair of spectacles 1. A twin lead 18 is carried by clips 20 on the sidepiece of the spectacles, one conductor being connected to the plate 4 and the other passing through the tail and ball to contact the base of the bulb, their opposite ends being connected to a plug 21 for making connection to a transformer, e.g. mounted in a dentist's chair, onto a dry battery carried in the pocket. The tail 6 may alternatively be screwed directly into the bridge of the spectacles, the hooks being dispensed with.
Patent GB-1119831-A (GB)
Title: Process for the production of barium hydroxide
Inventor: CLENNETT GEORGE
IPC: B01J47/00
Filed: 1963-10-23
Abstract: A water-soluble barium compound is prepared from an aqueous solution of barium sulphide by a process comprising contacting a strongly acidic cation exchange resin in its sodium or potassium form with an amount of the barium sulphide solution such that some barium sulphide remains unchanged, separating the resin from the resulting solution, which contains barium sulphide and sodium or potassium sulphide, and thereafter regenerating the resin with an aqueous solution of a sodium or potassium compound whose anion corresponds to that of the barium compound desired, separating the resin from the resulting solution and isolating the desired barium from that solution.  The elution with a sodium or potassium compound is preferably effected with the hydroxide, yielding barium hydroxide which may be crystallized out from the eluent which also contains alkali metal hydroxide, or with the chloride yielding barium chloride which may be recovered by crystallization or salting out.  Sodium and potassium acetates and nitrates may be used analogously.  The process may be operated cyclically.  The barium sulphide solution is preferably passed through the exchange resin until barium sulphide appears in the issuing effluent containing sodium or potassium sulphide.  The latter can be recovered from this effluent by precipitating the barium using alkali metal carbonate or by feeding the effluent to one or more exchange columns operated as above and then if desired treating it in accordance with the parent invention to obtain substantially pure alkali metal sulphide.ALSO:Barium acetate is prepared from an aqueous solution of barium sulphide by contacting a strongly acidic cation exchange resin in its sodium or potassium form with an amount of the barium sulphide solution such that some barium sulphide remains unchanged, separating the resin from the resultant solution, thereafter regenerating the resin with an aqueous solution of sodium or potassium acetate and isolating the desired barium acetate from the resultant effluent.
Patent GB-956473-A (GB)
Title: Improvements in or relating to the production of rubber boots
Inventor: SILOMBRA ARMANDO
IPC: B29D35/00
Filed: 1960-12-06
Abstract: 956,473. Vulcanizing boots. SUPERGA S.p.A. Dec. 6, 1960, No. 41958/60. Heading B5A. Rubber boots are manufactured by a process whereby the preformed sole in a mould is connected to the upper in an aligned mould by means of a pressure fluid applied while the said parts are being vulcanized in the moulds. It is preferable to make the upper on a last in one piece in its various thicknesses by calendering with a grooved cylinder. The rubber upper 7 together with the lining 6 and the insole 8 are removed from the last and introduced via the end remote from the sole into the mould 2 of which the inner surface is formed with grooves. The various thicknesses of the upper are achieved by gradual transitions while the inner mould surface comprises a corresponding stepwise transition which is moulded on to the upper when the fluid pressure operates in the hollow mould 2. The apparatus for this process includes a sole mould 1 which can move horizontally to engage with the hollow mould 2 for the upper, which is open at both ends. A matching pressure member 3 can move so that it can either be in line with the sole mould 1 or be moved away to enable the latter to move into engagement with the upper mould 2. The aperture at the end remote from the sole is closed by means of a cover 4 which comprises a means for introducing the pressure fluid such as steam or preheated air after the mould has been sealed tight by the sole mould and the cover. To achieve higher pressures an appropriately shaped air chamber 16 is used and is placed inside the hollow mould for the upper after the upper plus its lining 6 has been inserted.