baber/WOPTO huggingface dataset:
Patent GB-253412-A (GB)
Title: Improvements in or relating to foundry moulding machines
IPC: B22C15/10
Filed: 1925-10-29
Abstract: 253,412. Lewis, W. Oct. 29, 1925. Moulding-machines. -A moulding-machine is provided with a pair of spaced lifting plungers 1 at each end carrying the lifting head 5 to which is detachably connected the mould table 17. The lifting head 5 is provided with a crank 6 to which is connected the roll-over cylinder 11. The mould flask a with its pattern in place is clamped on the table 17, and is filled with sand. The head 22 of a jar-ramming machine rises to free the locking pins 27, Fig. 4, from the slotted pins 10 and thus to disconnect the table 17 from the lifting head or mechanism while. ramming is in progress. When ramming is finished the lifting plungers 1, 2 under control of the parallel-motion cable gear 13, 16 lift the table 17 above the head 22 so that the spring lever gear 24, 27 re-locks the table 17 to the lifting head 5 and the roll-over mechanism. A car on rails is run into the machine, the mould is rolled over by cylinders 11 and lowered on to the car. Plungers 1 and 2 then lift the table 17 and pattern or pattern plate thus drawing the pattern. The car with finished mould is then run out. In a modification, the jar ramming mechanism and the flask receiver are both mounted on a car. Fig. 13 shows a drag and cope machine in one unit, the cope machine 33 having no roll-over mechanism. The car 38 has two jar-rammers 39, 40 with a flask receiver between.
Patent GB-206831-A (GB)
IPC: C09B35/21
Filed: 1923-10-30
Abstract: Disazo dyes are prepared by coupling the tetrazo compounds of the diaminodiaryldialkylmethanes described in Specification 204,722, with any components, for example, naphthol- or aminonaphthol-sulphonic acids or pyrazolone sulphonic acids.  The products dye wool from an acid bath in red, violet, yellow, &c. shades fast to washing, fulling, and light.  Examples are given of the production of dyestuffs from diamino-di-o-tolyldimethylmethane and 1-naphthol-5-sulphonic acid, diaminodiphenyldimethylmethane and 1-(2-chlor-5-sulphophenyl)-3-methyl-5-pyrazolone, diaminodiphenylmethylethylmethane and 1-amino-8-naphthol-4-sulphonic acid.
Patent GB-671647-A (GB)
Title: Improvements in and relating to compositions containing chlorine-containing polymeric substances
IPC: C08K5/26
Filed: 1948-10-20
Abstract: Chlorine-containing polymers are heat-stabilized by addition of minor amounts of semicarbazide or a condensation product thereof. After-chlorinated polymers or copolymers of compounds which may contain chlorine are included.  Specified examples are polymers of vinyl chloride, vinylidene chloride and chlorotrifluoroethylene and copolymers of these with each other and with vinyl esters, e.g. vinyl acetate, and dialkyl fumarates; polymers and copolymers of 2 - chloro - butadiene; after-chlorinated polymers and copolymers of vinyl esters and ethers and of methyl methacrylate and acrylonitrile. Suitable condensation derivatives of semicarbazide are the semicarbazones of acetaldehyde, benzaldehyde, acetone and acetophenone.  The stabilizers may be mixed with the resins on rolls, or by dissolving or suspending in solutions or dispersions and evaporating off the liquid media or precipitating the polymers in admixture with the stabilizers.  When adding a water-soluble stabilizer to an aqueous dispersion of the polymer, an emulsifying agent may be simultaneously added as described in Specification 671,648, and the polymer isolated by spray-drying, using, for example, a rotating disc dryer or one employing an atomiser. Other heat-stabilizers may be added, including alkali metal carbonates, bicarbonates, hydroxides, borates, sulphides, phosphates, acetates and stearates, alkaline earth metal carbonates, oxides, hydroxides and salts of weak organic acids, basic organic substances, mercaptides, urea, thiourea and diphenylthiourea.  Plasticizers and fillers such as dibutyl, dinonyl and di-2-ethylhexylphthalates, tricresyl phosphate, dibutyl sebacate, chlorinated paraffin waxes, lampblack, chalk, asbestos, bentonite and cork meal may also be added. Specifications 388,309, 410,837, 418,230, 450,856, 451,723, 454,232, 500,298, 526,345, 531,093, [Group VI], 536,297, 540,127, 542,141, 543,505, 570,330, 580,078, 591,611, 600,270, [Group V], and 602,312 also are referred to.
Patent GB-788545-A (GB)
Title: Improvements in or relating to electro-forming
Inventor: FYNN GEOFFREY WILFRED
IPC: C25D1/00
Filed: 1954-09-21
Abstract: 788,545. Electrodeposition. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Dec. 12, 1955 [Sept. 21, 1954], No. 27258/54. Class 41. A method of electroforming, e.g., a waveguide bend, comprises fixing an extension 7, e.g. of stainless steel, Fig. 5(a), to a body 1, 6 without introducing an internal angle, electrodepositing metal 10, e.g. copper, at least on the contiguous areas of the body 1, 6 and the extension 7, and removing the extension 7. A shoulder 12 is thereby formed in the body. The body may be initially formed by electrodepositing copper 6 on a stainless steel mandrel 1, Fig. 2a, removable insulating masks 2 preventing end-wise deposition. The surface 6 is then machined, the masks 2 replaced by the extensions 7, and masks 8 attached as shown, Fig. 5a, for the second electrodepositing operation, after which the mandrel 1 is removed with the extensions 7. Electrodeposition is carried out by rotating the mandrel assembly in a solution of 200 gms. per litre copper sulphate and 40 gms. per litre sulphuric acid. The masks 2, 8 and extensions 7 are 'secured by locating pins and screws, which may have insulating heads, and electrical connection is by screwing a terminal in a central tapped hole in the mandrel 1. In another embodiment, a waveguide slot directional coupler is made by electrodepositing copper as described above on a mandrel comprising alternate copper and stainless steel blocks 23, 30 ... 34 and 25 ... 29 respectively sandwiched between insulating masks 24, 37 secured by screws 38 having insulating heads. Insulating masks 35, 36 cover opposite sides of the mandrel, and a shaft 15 screwing into a central hole in the block 23 serves both as a support and an electrical connection during electrodeposition. Copper is deposited on the unprotected sides of the mandrel to a depth to form small fillets 39, Fig. 12d. Masks 24, 35 ... 37 and the blocks 25 ... 29 are removed to leave a copper member having slots corresponding to the blocks 25 ... 29 and small edge flanges 39 on two sides. In both embodiments, stainless steel may be replaced by a plastic material with a conducting coating. Specification 691,128, [Group XL (b)], is referred to.
Patent GB-1344085-A (GB)
Title: Benzoxanthene and benzothioxanthene dicarboxylic acid imide dyestuffs and process for their manufacture
IPC: C09B57/14
Filed: 1971-04-19
Abstract: 1344085 Benzoxanthene and benzothioxanthene dyes FARBWERKE HOECHST AG 19 April 1971 [14 April 1970] 27272/71 Heading C4P Benzoxanthene or benzothioxanthene dicarboxylic acid imide dyes have the formula wherein X is an oxygen or sulphur atom; R is an amino group substituted by an optionally substituted alkyl, cycloalkyl, aralkyl, or aryl group or a heterocyclic radical or by one or two acyl groups, or R is a 1,3,5-triazinyl radical substituted by one or two substituents selected from optionally substituted amino, alkyl, hydroxyalkyl, alkoxyalkyl, halogenoalkyl, aralkyl, aryl or heterocyclic radicals; R 1  and R 2  independently represent hydrogen, halogen, cyano, alkoxycarbonyl, C 1 -C 4  alkyl or alkoxy or aryl; R 3  is hydrogen or an optionally substituted alkoxy group; and R 4  is H, or an optionally substituted alkoxy group identical to R 3 . The dyes may be prepared by condensing a benzoxanthene or benzothioxanthene 3,4-dicarboxylic anhydride of formula with at least an equimolar amount of an amine of formula H 2 N-R, under pressure at 100- 280 C. Dyes of Formula 1 where R is an optionally substituted acylamino group may be prepared by acylating a hydrazide of formula with a compound of formula R<SP>1</SP>COY, (R<SP>1</SP>CO) 2 O or R<SP>1</SP>SO 2 Y, where R<SP>1</SP> is alkyl, cycloalkyl, aralkyl or aryl and Y is a halogen atom. The dyes give greenish yellow to orange fluorescent shades on condensate resins and synthetic polymers.
Patent GB-1113913-A (GB)
Title: Automatic bobbin supply system
IPC: B65H67/06
Filed: 1965-06-28
Abstract: 1,113,913. Endless conveyers. DEERING MILLIKEN RESEARCH CORPORATION. 28 June, 1965 [26 June, 1964], No. 27341/65. Heading B8A. [Also in Divisions D1 and G3] Bobbins B (see also Figs. 1, 2, not shown) are conveyed from a hopper or bin (10) to a plurality of discharge stations (22) by an endless belt having bobbin receiving pockets 28 formed between cleats 24. The belt has an upper run (14), is reversed, and then runs above a guiding table (20) which retains the bobbins in the pockets. An opening 76 is formed in the table (20) above the shoot (32) of each discharge station (22), but the bobbins are normally prevented from falling therethrough by blades 72, 74 on gate member 60, 61. When the level of bobbins in a shoot (32) falls below a certain level, a microswitch (58) is actuated and in conjunction with pulses from a photo-cell (98) produced by light from a source (100) passing through apertures (26) in some cleats 24, causes a motor (68) to be switched on and rotate the gate member 60, 61, thus allowing a predetermined number of bobbins to drop into the shoot (32). Some of the pockets are filled with extra cleats 30 to produce portions of the belt containing no bobbins and it is arranged that blades 72, 74 rotate with one of these portions adjacent. Should the bobbin level in shoot (32) fall below a lower level, a second microswitch (56) is operated to stop bobbins being delivered from the lower end of the shoot.
Patent GB-650602-A (GB)
Title: Improvements in mail chutes
IPC: A47G29/126
Filed: 1948-10-21
Abstract: 650,602. Letterboxes and the like. AKTIEBOLAGET SANDINS METALLFABRIK. Oct. 21, 1948, No. 27393. Convention date, Nov. 1, 1947. [Class 18]  A mail shoot mounted in an inwardly sloping aperture in a door or the like comprises inner and outer closure flaps 2, 3 connected to each other by lateral walls 17 to form a unitary assembly that can be swung about an axis 7 to move the flaps away from  the door. The plate or flap 2 is adjustably secured to the walls 17 to accommodate doors of different thicknesses and the flap 3 ,and walls 17 are carried by a frame 12 secured to the door by screws 22. The Specification as open to inspection under Sect. 91, states also that the mail shoot may be closed by means of springs. This subject-matter does not appear in the Specification as accepted.
Patent GB-649891-A (GB)
Title: Tubeless tires
IPC: B60C5/16
Filed: 1948-10-22
Abstract: 649,891. Tubeless tyres. SUTTON, R. R. Oct. 22, 1948, No. 27455. [Class 144 (ii)] A tubeless beaded tyre has an annular flap 17, of rubber or the like, one side edge 20 of which is disposed against one (21) of the two tyre beads 13, 21, so that when the tyre is inflated on a wheel rim 14 the central portion of the flap is forced against said rim, and the other side edge 18 of which is arranged to overlap part of, and interlock with an annular member 10 which is integral with, or vulcanized to, the inside of the other bead 13 and bears on the rim. As shown, the flap edge 18 is formed as an enlarged portion which engages in a groove 15 in a rubber reinforcing ring forming the annular member 10, a helical spring 19 being embedded in the enlargement 18 to ensure a firm engagement with the groove 15. The flap edge 20 is vulcanized or cemented to the inside of bead 21.
Patent GB-1494934-A (GB)
Title: Platforms for resting on the bed of a body of water
IPC: E21B43/017
Filed: 1975-06-30
Abstract: 1494934 Marine platforms C G DORIS (COMPAGNIE GENERALE POUR LES DEVELOPPEMENTS OPERATIONNELS DES RICHESSES SOUS-MARINES) 30 June 1975 [12 July 1974] 27464/75 Heading E1H A marine platform has underwater structure 1 equipped with base 3 which rests upon sea bed 2 and the structure supports a bridge 5 above the water. The base includes tunnels or working chambers 16, 17 which can be kept dry and can be isolated from one another by watertight partitions and doors 29, 30 and are bounded by watertight walls 26. Access to the chambers is from shaft B of the structure through watertight doors 27 and the chambers contain fluid handling equipment 36, 37, 38 and an internal piping system. Seals 34, 35 across the watertight walls 26 connect the internal piping system to parts 33 of an external piping system 6 located on the sea bed.
Patent GB-508448-A (GB)
Title: Improvements in soft effect attachments for use with photographic objectives
IPC: G02B13/20
Filed: 1938-09-22
Abstract: 508,448. Lenses. DULO. VITS, J. Sept. 22, 1938, No 27609. Convention date, Sept 24, 1937. [Class 97 (i)] A lens to be placed in front of a photographic objective tc produce a soft-focus effect has one surface D spherical and the other surface divided intc zones A, B, C, of which the intermediate zone A is spherical and concentric with the surface D, while the axial zone C is less strongly and the peripheral zone B is more strongly curved than the zone A, or vice versa.
Patent GB-160211-A (GB)
Title: Improvements in, or relating to, ammeters, voltmeters and other recording and indicating instruments
IPC: G01R11/10
Filed: 1919-11-08
Abstract: 160,211. Smith, W. F., and Healey, T. G. P. Nov. 8, 1919. Vibration-dampers.-In a voltmeter, ammeter, or other recording or indicating device of the oscillating-needle type, a light rider in the form of a ring is loosely mounted on the pivot pin, which oscillates with the needle, in order to damp the needle oscillations and render the instrument dead-beat. The ring may be mounted on the coned end of the pivot pin to contact with the fixed bearing, or it may contact with any other fixed part.
Patent GB-483153-A (GB)
Title: Improvements in electrical spark gaps
IPC: H01H29/22
Filed: 1936-10-12
Abstract: 483,153. Spark - gaps. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd.. and SAXBY, R. N. Oct. 12, 1936, No. 27687. [Class 39 (i)] A mercury spark-gap for use in high-frequency generating apparatus. e.g. as described in Specification 435,564, [Group XXXVIII], comprises a hermetically sealed container which is adapted to be moved to adjust the length of the gap. An electrode 14 is pivoted to an iron leading in wire 11 at a point 15 which is displaced from the centre. An iron leading-in wire 12 is connected to the mercury 13. The filling consists of hydrogen at atmospheric pressure. The length of the gap is adjusted by rotating the spherical glass container. In another form, the length of the gap in a cylindrical container is adjusted by tilting or shaking the container to increase or decrease the amount of mercury in the pool from a separate supply which may be contained within a trough in the upper part of the container or within an auxiliary vessel sealed to the container.
Patent GB-261008-A (GB)
Title: Improvements in and relating to vapour burners
IPC: F23D11/44
Filed: 1926-11-04
Abstract: 261,008. Lokomotivfabrik Krauss & Co., in Linz. Nov. 7, 1925, [Convention date]. Atmospheric vapour burners; vaporizing- apparatus; fuel reservoirs; burners. mounting.- The mixing-chamber comprises two superposed cylindrical parts 11, 13 and a contracted part 12, the part 11 carrying a perforated burner-plate 6, and the part 13 being provided with a central upstanding part 14 of substantially the same diameter as the part 12 so as to form a substantially annular chamber communicating with a telescopic mixing-tube 10. The burner-plate 6 rests on the rim of the part 11 and is guided by a bolt 16. The top of the annular chamber is provided with burner outlets 15 for heating an annular vaporizing-tube 7 communicating with a nipple 9 arranged above a cleaning opening 8. The tube 7 is supplied through a tube 5 from a fuel reservoir 2, having a pump 3 and an airvalve 4 and attached to a hot-plate 1. The annular chamber is connected by a tube 17 with a second burner-head 18, controlled by a valve 19, the tube 17 being connected with the hotplate 1 for supporting the burners. Further branch pipes may be provided for additional burners.
Patent GB-1125923-A (GB)
Title: Improvements relating to molecular sieves
IPC: C10G25/03
Filed: 1966-06-21
Abstract: 1,125,923. Separating hydrocarbons. ALLIED CHEMICAL CORP. 21. June, 1966 [21 June, 1965], No. 27727/66. Heading C5E. A process for, separating straight chain paraffin, hydrocarbons; from mixtures thereof with other hydrocarbons comprises contacting the mixtures with a zeolitic molecular sieve adsorbent which selectively adsorbs the straightchain paraffins, subsequently desorbing the adsorbed straight-chain paraffins by contacting the adsorbent. with a desorbing material, cyclically repeating the adsorption and desorption until the capacity of the adsorbent for adsorbing the paraffins is substantially but only partly depleted, restoring the capacity of the adsorbent for adsorbing the paraffins to substantially its original value by passing water substantially free from hydrocarbons at a temperature of 60‹ to 300‹ C. through it and dehydrating the adsorbent and repeating the cyclical adsorption and desorption. The water may be in the form of steam. In an example the process is applied to a 5Š calcium aluminosilicate molecular sieve:
Patent GB-339011-A (GB)
Title: Improvements in and relating to the refining of vegetable oils to be used for medical purposes
IPC: A61K47/44
Filed: 1929-09-12
Abstract: 339,011. Hatakeyama, H., and Watanabe, H. Sept. 12, 1929. Hypodermic injections.-Refined vegetable oils for use as solvents for medical purposes, e.g. injections are prepared by removing the bulk of free fatty acids and glycerine from the oil, and esterifying the traces of fatty acids remaining by an aromatic alcohol. For example, olive oil is heated and agitated with water to form an emulsion, and after standing the oil layer is removed, washed with water and is dehydrated e.g. by table salt which has been heated to redness. The dry oil is then heated on a water bath with about 3 per cent by volume of benzyl alcohol, and when esterification is complete, the oil is distilled under reduced pressure to remove excess of benzyl alcohol. The water produced during esterification is removed by passing through the mixture a current of carbon dioxde which has been dried with sulphuric acid. Benzyl alcohol may be replaced by phenylethyl-, oxybenzyl-, or cinnamic alcohol. The oil may be pre-treated with a decolorizing agent e.g. a mixture of acidic white clay and animal charcoal. The esters of higher fatty acids with aromatic alcohols are said to have a local narcotic action.
Patent GB-463966-A (GB)
Title: Improvements in and relating to the manufacture of titanium dioxide and products containing titanium dioxide
IPC: C01G23/053
Filed: 1935-10-08
Abstract: Aqueous solutions of titanium compounds such as titanic sulphate or chloride are hydrolyzed by heat with or without pressure in the presence of tin compounds and the precipitated hydrated titanium oxide washed and calcined to obtain pigment titanium oxide.  From 0,001 to 0,1 mols. SnO2 may be used per mol. TiO2.  The tin compound may be a soluble tin salt such as stannic chloride or sulphate or dispersed ortho- or meta-stannic acid; or an alkali metal stannate which may be added directly to the main solution, or to a port thereof and the resulting mixture be added to the remainder of the solution; or a solution of a titanic salt containing ferric salt may be reduced with metallic tin or a stannous salt, and the resulting solution containing ferrous and it may be some titanous salt and also tin in solution be hydrolyzed.  By effecting hydrolysis in the presence of carriers such as barium sulphate, light spar, or asbestin composite products may be obtained.
Patent GB-279461-A (GB)
Title: Improvements in or relating to current rectifiers
IPC: H01L29/24
Filed: 1927-10-19
Abstract: 279,461. Levy, L. Oct. 20, 1926, [Convention date]. Addition to 265,652. Contacting-solid resistances.- Relates to rectifiers of the type comprising aluminium and cuprous sulphide electrodes in a suphuretting atmosphere as described in the parent Specification, and consists in enclosing the rectifier elements in an aluminium casing comprising two screw-connected parts 11, 14 with an india-rubber packing disc 17 inserted between them to provide a gas-tight joint. The aluminium electrode 2 is carried by an insulating plug in the part 11 and surrounded by ammonium hydrosulphide 6. A layer of copper sulphide 4 is formed between the electrode 2 and a copper element 3 by passing a current through the valve. The element 3 is carried by a spring-urged aluminium rod 20, the packing disc 17 being inserted between them to render the casing gas-tight.
Patent GB-831089-A (GB)
Title: Polymerization process for olefins
IPC: C08F10/00
Filed: 1956-09-12
Abstract: 1-Olefins are polymerized in the presence of a hydrocarbon diluent and a catalyst consisting of chromium oxide associated with at least one of silica, alumina, zirconia or thoria, the diluent having been hydrogenated.  Specified olefins are ethylene, propylene, their mixtures, butadiene, isoprene and diolefin-olefin mixtures. Specified diluents are propane, isobutane, n-pentane, isopentane, iso-octane, cyclohexane and methylcyclohexane.  The diluent may be treated with hydrogen in the presence of a hydrogenation catalyst.
Patent GB-1112275-A (GB)
Title: Improvements in or relating to the manufacture of fire polished flat glass on a liquid support
IPC: C03B18/06
Filed: 1965-07-01
Abstract: <PICT:1112275/C1/1> In a method of manufacturing fire polished flat glass in ribbon form 5 on a liquid support 4 (e.g. molten metal) the marginal areas of the ribbon 5 are supported upon a series of independent and individually movable rafts 7a, 7b aligned edgewise along each side wall of the liquid support tank, the rafts being spaced from each other and from the side walls by such an amount that the level of the liquid support is lower in these spaces than the meniscus of the liquid support between the two opposed series of rafts.  Each raft is adjusted by a pair of levers 11a or 11b having a fulcrum nearer the end not attached to the raft, said end being fixed to a screw 13a or 13b. Each pair of levers is used for the circulation of cooling water through a box 16 in each raft. The marginal edge of the glass ribbon rests on the surface of the cooling box 16.  A small portion of the box 16 may contact the liquid support and the rest is insulated therefrom by a refractory housing, but other designs of rafts are shown in Figs. 3 to 6. The cooling box 16 may be metal having two wings which form the whole of the upper surface of the raft, or the cooling box 16 may be surrounded by graphite itself surrounded by a refractory housing, or the raft may have a step in that side in contact with the main body of liquid support the upper surface of this step having a graphite covering.