baber/WOPTO huggingface dataset:
Patent GB-515573-A (GB)
Title: Improvements in and relating to artificial filaments derived from nitro-cellulose
IPC: D01F2/26
Filed: 1938-06-03
Abstract: 515,573. Artificial silk &c. WALLACH, R. June 3, 1938, No. 16727. [Class 2 (ii)] Cellulose nitrate solutions are formed into filaments and the latter, after substantially complete coagulation and after being rendered plastic by treatment with softening agents, are stretched not more than 200 per cent. while in a uniformly plastic condition by positive stretching means and then subjected to partial or complete denitration. Dry or wet spinning methods may be used. Ethyl alcohol, diethylene glycol, tricresyl phosphate, dibutyl phthalate, aqueous solutions of ethanolamine, acetone, isopropyl ether, acetic acid, methyl alcohol, or ethyl alcohol and ethyl acetate, may be used as softening agent. Instead of water, glycerine, ethylene glycol, or a hydrocarbon may be used as diluent. The softening agent may be added to a dry spinning chamber in the form of a vapour or mist, or may be added to a coagulating bath, or the filaments may be passed from the dry spinning chamber or the coagulating bath into a bath of softening liquid or into a chamber containing vapours of softening liquid. Stretching may be facilitated by heating. Stretching may be carried out on a single filament or on a bundle of filaments before or after or during twisting, dyeing, or other treatments. Denitration may be effected by means of sodium, potassium, or calcium hydrosulphide. Denitration may be carried out while the filament is in a plastic state. After the stretching, the softening agent may be removed. In examples, cellulose nitrate solutions are extruded into air or into a bath of alcohol and water, and the filaments are rendered plastic by being passed into alcohol containing a little water, or through a vapour containing ether, ethyl alcohol, and water. The filaments are then stretched and subsequently denitrated. Filaments which have been made by casting cellulose nitrate solution into grooves of a grooved roller and coagulating by heat or by a coagulating liquid, may be subjected to the process. Specifications 375,425 and 432,029 are referred to.
Patent GB-581308-A (GB)
Title: Improvements in or relating to the manufacture of foundry sands
IPC: B22C1/18
Filed: 1944-09-01
Abstract: 581,308. Mould and core materials. BERK & CO., Ltd., F. W., and DUGAN, B. B. Sept. 1, 1944, No. 16728. [Class 83 (i)] Instead of adding Fuller's Earth to foundry sand in the form of a ground powder, the unground earth is added to water and the resultant slurry to the sand. 0.1 to 2 per cent of the earth is usually sufficient to increase the content of argillaceous material in the sand to between 5 and 10 per cent by weight. One part of the earth in lump form may be mixed with 4 parts of water to form a slurry, which without, agitation is mixed with 100 parts of sand.
Patent GB-139095-A (GB)
Title: Improvements in or relating to ball and float valves
IPC: G05D16/12
Filed: 1919-07-04
Abstract: 139,095. George, E. A. July 4, 1919. Ball and float valves.-A ball and float valve of the lever-operated slotted-plunger type is arranged so that the end of the lever e can be disengaged from the slot so that the plunger a can be removed endways for re-washering without dismounting the pivot. The slot c in the casing is extended for this purpose. The plunger is formed with a key b sliding in a keyway extension of the slot c, so that the plunger can only be re-inserted in correct position. To prevent the plunger from being ejected in normal use, a cap is screwed on the casing at d' to act as a stop. For a shallow cistern, the lever e is jointed at i and kept normally rigid by a sleeve j and screw nut k. By releasing the nut and sleeve, the lever can be bent so as to disengage the plunger.
Patent GB-665667-A (GB)
Title: Improvements in the manufacture of imidazolidines and hexahydropyrimidines
Filed: 1949-06-24
Abstract: Imidazolidines and hexahydropyrimidines of formula <FORM:0665667/IV (b)/1> where R is hydrogen, alkyl or aryl, R1 and R2 are aryl which may be substituted, or aralkyl, and X is ethylene or propylene, are prepared by heating an aldehyde RCHO with the diamine R1NH,X,NHR2, the latter being in the form of an aqueous dispersion containing a dispersing agent.  R may be methyl, ethyl, propyl, butyl, amyl, phenyl or tolyl; R1 and R2 may be phenyl, tolyl, ethylphenyl, chlorophenyl, methoxyphenyl, ethoxyphenyl, acetaminophenyl, cyclohexyl, or benzyl.  A preferred dispersing agent is sodium lignosulphonate; a stabilizing agent, e.g. potassium pyrophosphate, is also preferably present.  In the examples (1-3), N,N1-diphenylethylenediamine is treated with formaldehyde, acetaldehyde, and benzaldehyde to give the imidazolidines, and 1 : 3-diphenylhexahydropyrimidine is also prepared similarly. Specification 664,204 is referred to.
Patent GB-687642-A (GB)
Title: Improvements in bag-type containers and closures therefor
IPC: A61H37/00
Filed: 1951-07-16
Abstract: 687,642. Stoppers &c. LOBL, F. July 16, 1951, No. 16839/51. Class 125(iii) A rubber hot water bottle with walls 10, 12 one of which 10 has a mouth opening 14 has a closure plug 20. suspended inside the container by a flexible member 22 and having a circular end portion 26 greater in diameter than the opening 14 but which can be forced therethrough and which regains its natural diameter when passed through the opening, a flange 28 being distorted against the inner wall to seal the aperture. The mouth 14 is reinforced by an annular member 18 of metal or other stiff material which may have flanges 19, 19<SP>1</SP> and which is embedded in a thicker portion 16 of the wall 10. In a modification, Fig. 5, the closure plug 21 has a suspension flap 32 removably secured in the container to allow of replacement of a worn plug and the plug has annular grooves 38 to increase flexibility.
Patent GB-1094519-A (GB)
Title: Process for the production of alkaline earth metal salts of tocopherol dibasic acid hemiesters
IPC: C07D311/72
Filed: 1966-04-18
Abstract: Alkaline earth metal (including magnesium) salts of tocopherol dibasic acid hemiesters are prepared by neutralizing a tocopherol dibasic acid hemiester with lithium hydroxide solution, and then reacting the neutralized product with an alkaline earth metal chloride or nitrate.  The neutralization and the following reaction preferably are carried out in methanol or ethanol. In examples, there are obtained calcium, magnesium and barium salts of d-a -tocopherol and dl-a -tocopherol succinic acid and phthalic acid hemiesters in methanol solutions.
Patent GB-168905-A (GB)
Abstract: 168,905. Sleeman, L. V., Schmidt, F. A., and Houston, C. F. S. Sept. 7, 1921. No Patent granted ( Sealing fee not paid). Magneto-electric machines.-Battery current is supplied at starting to the primary circuit 5 of a stationary magneto so that it does not oppose the magnetic field in the H-armature. One end 13 of the primary winding 5 may be passed axially through the condenser screw 9 to a commutator 11 in circuit with a two-way switch 22 and battery 23. The contacts 15, 12 on the commutator are engaged by brushes 19 carried by the ebonite case of the contact-breaker, the length of the segments 12, 15 being such that, at the instant of reversal, the gaps between them are spanned by brushes 19.
Patent GB-140130-A (GB)
Title: Process and apparatus for determining the position of an inaccessible point
IPC: G01C3/00
Filed: 1918-10-16
Abstract: 140,130. Schultz, E. J. A. Oct. 29, 1917, [Convention date]. Range-finders.-In apparatus for determining primarily the height of an inaccessible point such as an aeroplane, the lines of sight from two stations are projected on to the vertical plane containing the stations, and the triangle formed by the traces of these lines and the base (the height of which gives the height of the aeroplane) is reproduced to scale. Fig. 2 shows the apparatus at the distant station. A disk D is mounted on an horizontal axle a which is perpendicular to the base, about which the disk may be rotated by a handle E through gearing r<1>, r<2>, r<3>, c. The disk D has projections b round which is stretched a thread. The disk D is inclined until the aeroplane is in line with two opposite portions of the thread, and the inclination of the disk is transferred to a pointer at the other station by a series of electric imputes. The handle E carries a crank d with two contacts g<1>, g<2>, one of which engages a contact g on a depending arm c to energize one of two circuits, according to the direction of rotation of the handle. A wheel J with undulating perimeter causes an interrupter k to oscillate and produce an intermittent current. Condensers k, k<1> discharge the line at each break of contact. Included in the respective circuits are electro-magnets G, G<1>, Fig. 3, at the receiving- station, the armatures m, m<1> of which actuate pallets i, j<1> to rotate a bar OP. The magnets G, G<1> also carry armatures r, r<1> of greater retentivity to throw the pallets j, j<1> in and out of action as the direction of rotation alters. The bar OP thus moves parallel to the plane of the disk D, over a sheet MN<1> cscaled in heights. Pivoted at o<1> is a second bar o<1>p<2> constrained to move parallel to the trace of the line of sight at the receiving-station, by a link p't. The distance Oo<1> represents the distance between the stations on the same scale as that of heights. At the receiving-station, an alidade ST is hinged to a disk q which is keyed at its centre to a disk q<1> turning on a pivot z perpendicular to the plane M<1>N and carrying the link p't pivoted at t. The intersection p<2> of the movable bars gives the height required. To find the range, a second graph N<1>U on a vertical hinge NN<1> marked with ranges turns with the alidade. The range is given by the curve at the point at which the alidade cuts the height p<2>.
Patent GB-624812-A (GB)
Title: A process and apparatus for drying pasty materials
IPC: F26B17/02
Filed: 1947-06-26
Abstract: 624,812. Drying apparatus. BARR, P. J. June 26, 1947, No. 16927. [Class 34(ii)] Sticky plastic material is dried by expressing it through perforations in a travelling belt or drum 1 to form short protruding rods which are carried through a hot gaseous drying medium until the material is no longer sticky and can be removed from the belt or drum by a scraper 9. In the form shown the drum I is rotatably supported at its ends by rollers 2 and material from a hopper 4 is fed to a roller 3 which squeezes it through the perforations. As the drum rotates the extruded rods 10, Fig. 2, are carried through a current of hot gas within the jacket 6 and after severance are blown down the discharge duct 11 which may lead to a further drying apparatus such as that described in Specification 546,088.
Patent GB-258377-A (GB)
Title: Improvements in or relating to collapsible reels for winding filaments, yarns, threads, silks, and the like
IPC: B65H49/30
Filed: 1925-07-02
Abstract: 258,377. Brysilka, Ltd., and Schubert, F. W. July 2, 1925. Skein holders and swifts. - In a collapsable reel for winding yarns &c., the filament-supporting bars 8 are carried on three segmental portions 29, 31, the two portions 31 being pivoted at 30 on the third portion 29, which latter is provided with a radial arm 32 carrying a crossmember 33 adapted to hold the segments 31 in their outer positions through the medium of catches 34. A pin 35 is adapted when depressed to disengage the catches 34.
Patent GB-787480-A (GB)
Title: Improvements in or relating to photographic film elements
Inventor: CHALLIS KENNETH JOHN
IPC: G03C1/93
Filed: 1955-06-13
Abstract: 787,480. Coated fabrics. ILFORD, Ltd. May 16, 1956 [June 13, 1955; Nov. 11, 1955], Nos. 17019/55 and 32348/55. Class 140. [Also in Group XX] An oriented polystyrene sheet is coated with a first coating of polyalkyl acrylate, polyalkyl methacrylate or copolymers of alkyl acrylates or alkyl methacrylates with themselves or each other or of either with methacrylic acid, vinyl acetate, 4-vinyl pyridine or acrylonitrile, the alkyl groups containing not more than 5 carbon atoms and the polymers or copolymers having an acid value not exceeding 120, followed by a second coating of cellulose nitrate and a third coating of gelatin, or by a second coating of cellulose nitrate mixed with gelatin. The first coating may be polymethyl methacrylate, methyl methacrylate/methacrylic acid copolymer, methyl methacrylate/methyl acrylate copolymer, or methyl methacrylate/acrylic acid copolymer. The polymer or copolymer is applied as a solution in acetone, a lower aliphatic alcohol such as methanol, ethanol or isopropanol and a high boiling solvent such as cyclohexanone or ethyl lactate. Other ketones such as methyl ethyl ketone and methyl isopropyl ketone may be included. The cellulose nitrate may be applied to the dried first coating as a solution in methanol with methyl acetate or with butyl acetate and methyl ethyl ketone. The gelatin is dispersed in an acid aqueous/alcohol medium such as aqueous methanol/salicylic acid and coated over the dried cellulose nitrate layer. Alternatively, the gelatine coat may contain a minor proportion of cellulose nitrate and the second coat may then be omitted.
Patent GB-300104-A (GB)
Title: Improvements in tobacco pipes
IPC: A24F1/16
Filed: 1928-06-14
Abstract: 300,104. M÷st, A. June 14, 1928. Tobacco.-In a pipe having a sinuous bore b formed by a cylindrical member a in the stem having on its surface circumferential ribs d extending alternately in opposite directions from a longitudinal rib c, the free end f of each rib d is extended to form baffles contracting the smoke passage. The member a may be recessed at e for the reception of wadding or other absorbent material.
Patent GB-1010163-A (GB)
Title: Improvements in or relating to accelerometer utilizing electron beams
Inventor: BOLDRIGE AUSTIN GALLATIN
IPC: H01S3/06
Filed: 1963-05-01
Abstract: 1,010,163. Accelerometers; generating waveforms photo-electrically. J. J. MASCUCH. May 1, 1963, No. 17255/63. Headings G1A and G1N. [Also in Divisions H1 and H3] Apparatus for determining the acceleration of a moving body comprises an electron discharge tube in which a bunched electron beam follows a helical path in a longitudinal magnetic field along a drift tube to generate, in virtue of the inertia of the helical beam, a signal whose frequency is dependent upon the movement of the tube. This signal is combined with the modulating signal bunching the beam and, as the frequency of the modulating signal is unaffected by the movement of the tube, the difference frequency gives an indication of the acceleration. In Fig. 1 where 22 is the drift tube, 24 a magnet coil, 30 an annular output electrode and 26 the helical electron beam, the beam is generated in bunches at a photocathode 20 by the coherent light beam of a laser 15. The laser beam passes through the photocathode where it is modulated when the bunches of electrons are emitted, and is reflected by mirror 33 along the drift tube 22 to a photocathode 34, Fig. 2, at the centre of the electron beam output target 30. Signal currents due to the electron and light beams then flow in the conductive cap 31 and conductor 32. The photocathodes 20, 34 each comprise a one molecule thick monolithic silver backing layer deposited on a thin quartz disc and a one molecule thick caesium layer. The drift tube 22 is of quartz and with the magnet coil 24 is encased in a grounded metallic shield 25. In Fig. 3 the electron beam 26 generated by gun 45 is velocity modulated by cavity resonator 50, the resonator being fed by ammonia gas maser 15. The outputs of the drift tube anode 30 and the gas maser 51 are rectified at 38, 38a and combined to produce a difference frequency. An axial electric field is also produced in the drift tube between electrode 49 and 30. With suitable integrating output circuits velocity and distance travelled may be determined as well as the acceleration.
Patent GB-751429-A (GB)
Title: Nuclear reactor
IPC: G21C15/20
Filed: 1954-06-11
Abstract: 751,429. Nuclear reactors. STICHTING VOOR FUNDAMENTEEL ONDERZOEK DER MATERIE. June 11, 1954 [June 12, 1953], No. 17265/54. Class 39 (4). A nuclear reactor for producing thermal energy and employing heavy water as a moderator is enclosed in a pressure-proof steel vessel. Nuclear fuel is supplied as a suspension in heavy water and a second circuit may be added to carry a separate supply of heavy water to act as a moderator. A sintered BeO layer is used as a partition wall. Electric or pneumatic pressure controls maintain the pressure difference across the walls within limits. Control is effected by varying the level of the heavy water or by the insertion of neutron absorbing rods.
Patent GB-1168494-A (GB)
Title: Production of Fluorine-Containing Polymers
Inventor: LYNCH ERIC ROYLE
IPC: C08G73/10
Filed: 1967-04-14
Abstract: 1,168,494. Fluorinated aromatic polyimides. MONSANTO CHEMICALS Ltd. 19 March, 1968 [14 April, 1967], No. 17269/67. Addition No. 1,077,243. Heading C3R. The polyimides defined in Specification 1,077,243 are prepared by dissolving the appropriate aromatic dianhydride and aromatic diamine (at least one of which must contain fluorine as a nuclear substituent) in a solvent containing at least 40 volume per cent of an ether, ketone or C 1-6  alkanoic acid, any balance being an inert organic liquid, isolating an intermediate product, and dehydrating such product to form the polyimide.
Patent GB-1497230-A (GB)
Title: Electric smelting furnaces
IPC: F27B3/08
Filed: 1975-04-25
Abstract: 1497230 Electric smelting furnace ELKEMSPIGERVERKET AS 25 April 1975 [25 April 1974] 17293/75 Heading F4B An electric smelting furnace having a fixed electrode structure 3 has a furnace pot which is divided horizontally at a plane above the highest slag level reached in operation of the furnace into an upper and a lower portion one of which is rotatable in relation to the other. A sand seal or similar gas tight arrangement 8 acts as a gas seal between the two portions. The upper portion of the furnace may be triangular or clover leaf in plan with a circular part at the join to the lower portion.
Patent GB-1098590-A (GB)
Title: Method of producing tube plates, more particularly for nuclear reactor pressure vessels
IPC: G21C13/02
Filed: 1966-04-21
Abstract: 1,098,590. Welding by fusion; making heat exchangers. COMMISSARIAT A L'ENERGIE ATOMIQUE. April 21, 1966 [April 21, 1965]. No. 17563/66. Headings B3A and B3R. A tube plate is formed by welding the shoulders of shouldered tubes to form groups, correcting the peripheral dimensions of the group, e.g. by machining, and welding the groups together. Each tube or blank has two shoulders to form a multiple-walled tube plate. The tubes or blanks are forgings. The bores may be formed prior to welding and finishmachined after the groups have been formed. Alternatively, the whole of the bore machining may be effected at this stage. The peripheries of the shoulders and the groups are of lozenge, square, triangular, hexagonal or other polygonal shape.
Patent GB-834314-A (GB)
Title: Improvements in or relating to glazing apparatus for photographic prints
Inventor: JONES GEORGE ALAN
IPC: G03C11/16
Filed: 1957-06-03
Abstract: 834,314. Glazing photographic prints. ILFORD Ltd. May 29, 1958 [June 3, 1957], No. 17615/57. Class 98(2) A hot or cold glazing surface consists of a high gloss sheet or film of polyethylene terephthalate. Preferably, high gloss oriented film is used, such as " Melinex," " Cronon " and " Mylar " (Registered Trade Marks). The surface is repolishable.
Patent GB-595956-A (GB)
Title: Improvements in or relating to centrifugal pumps
IPC: F04D29/58
Filed: 1945-07-11
Abstract: 595,956. Centrifugal pumps. HAYWARD-TYLER & CO., Ltd., HOWARD, G. P. E., and IVANOFF, A. July 11, 1945, No. 17699. [Class 110 (i)] A centrifugal pump has a series of baffles 11 located in the casing 3a on the side of the impeller remote from the inlet conduit 7 for the purpose of creating a number of layers of relatively stagnant liquid thereby reducing the rate of flow of-heat through the back cavity to the pump bearing 22 and casing joint 16. Baffles may be mounted on a flanged sleeve 13, 14 bolted to the pump casing or they may be free to rotate. Specifications 544,930, 562,230, [Group XXXIV], and 595,957 are referred to. -
Patent GB-113983-A (GB)
Title: Manufacture of New Derivatives of Isovaleric Acid.
Inventor: ELLIS GEORGE BELOE
Filed: 1916-12-09
Abstract: 113,983. Ellis, G. B., (Chemische Fabrik von Heyden Akt.-Ges.). Dec. 9, 1916. Isovaleric esters of hydroxyfatty acids or arylhydroxyfa.tty acids, such as glycollic, lactic, or mandelic acids, are prepared by condensing the hydroxy acids with isovaleric acid or its chloride or anhydride, or by condensing salts of isovaleric acid with halogenfatty acids or their salts. Instead of isovaleric acid, the halogenisovaleric acids, particularly a - bromisovaleric acid, and their corresponding derivatives, may be employed in the above-described processes. The esters so obtained may be converted into their salts with inorganic bases, such as soda or lime, or organic bases, such as morphine or quinine. According to examples :-isovalerylmandelic acid is prepared by heating isovaleric chloride with inactive mandelic acid in benzene; isovalerylglycollic acid is prepared by heating isovaleric chloride with glycollic acid; the calcium salts of these acids are obtained by treating them with calcium carbonate; isovalerylmandelic acid is prepared by mixing isovaleric acid, pyridine, phosgene, and benzene, then adding a mixture of inactive mandelic acid, pyridine, and benzene, and then heating; isovalerylglycollic acid is prepared by heating sodium chloracetate and sodium isovalerate in xylene; alpha - bromisovalerylmandelic acid is prepared by heating alpha - bromisovaleric chloride or anhydride with inactive mandelic acid in benzene; the quinine salt of isovalerylmandelic acid is obtained by treating the acid with quinine in chloroform solution. The products have therapeutic properties. a - Bromisovaleric anhydride is prepared by heating alpha - bromisovaleric acid with acetic anhydride.
Patent GB-1037323-A (GB)
Title: Polyurethane foams
Inventor: WAKEFIELD BASIL JOHN
IPC: C08G18/38
Filed: 1962-05-09
Abstract: One or more of the hydroxy groups of a polyol are converted to hemiacetal groups by treatment with a halogen containing aldehyde. Polyols specified are glycerol and sorbitol. Aldehydes specified are the mono-, di- and tribromo- and chloro-derivatives of acetaldehyde.ALSO:A polyurethane foam is made from a polyol in which one or more of the terminal hydroxyl groups has been converted into a hemiacetal by reaction with a halogen containing aldehyde. Polyols specified are glycerol, sorbitol and poly-(propylene oxide). Aldehydes specified are the mono-, di-and tri-chloro- and bromo-derivatives of acetaldehyde.  All the polyol used in preparing the polyurethane may be so treated or only 10-30% may be treated. The products may be flame-resistant.  In Example (1) a reaction product of glycerol and chloral is mixed with polypropylene oxide and used to prepare a polyurethane foam by reaction with water, triethylene diamine, stannous octoate and tolylene diisocyanate in the presence of a silicone oil. In Example (2), polypropylene oxide/glycerol adduct is reacted with chloral.
Patent GB-793804-A (GB)
Title: Improvements relating to hackling machines for long staple fibres
Inventor: MACKIE JOHN PRINGLE
IPC: D01B5/00
Filed: 1955-06-22
Abstract: 793,804. Preparing fibres for spinning. MACKIE & SONS, Ltd., J. June 8. 1956 [June 22, 1955], No. 17792/55. Class 120(1) A hackling machine for long staple fibres has a lantern roller 1 turned by engagement with successive rows of hackle pins 6, the bars 2 of which press down the fibres on to the pins 6, the bearings 5 at the ends of the roller being arranged to move together, preferably by being mounted in arms 11 rigidly secured to a rocker shaft mounted in bearings 14, so that the axis of the roller 1 remains substantially parallel to the hackle bars 7. According to the Provisional Specification the arms 11 may be spring-controlled to augment the weight of the roller 1 pressing on the fibres 8. Specification 669,323 is referred to in the Provisional Specification.