baber/WOPTO huggingface dataset:
Patent GB-823360-A (GB)
Title: Iodo-carboxymethyl dextran and method of making it
Inventor: NOVAK LEO J
IPC: C08B37/02
Filed: 1957-08-26
Abstract: The invention comprises iodo-carboxymethyl dextran containing per anhydroglucose unit an average of 0.5 to 2 carboxymethyl groups and in which an average of 1.0 to 2.5 of the hydroxyl groups present initially in the carboxymethyl dextran are replaced by iodine.  The iodo-carboxymethyl dextran may be prepared by dissolving in water the carboxymethyl dextran containing, per anhydroglucose unit, an average of 0.5 to 2 carboxymethyl groups, adding powdered crystalline iodine or Lugol's solution (5% iodine in 10% KI) to the solution with stirring and allowing the mixture to react at room temperature or heating it until the iodo-carboxymethyl dextran is formed. Alternatively the carboxymethyl dextran is dispersed in a solution of a sulphonic acid chloride in an organic solvent which is a chlorine acceptor, such as pyridine, whereby the sulphonyl chloride of carboxymethyl dextran is formed.  A major portion of the solvent is then removed, for example by distillation, the residue is dissolved in alcohol, the solution is neutralized, the alcohol is removed under vacuum and acetone is added, an alkali metal iodide such as sodium or potassium iodide is added to the acetone solution and the mass is heated at 80-120 DEG  C. for 3 to 5 hours until iodo-carboxymethyl dextran is formed.  The carboxymethyl dextran starting material may be derived from native, high molecular weight dextran, or from a partial hydrolyzate of the native dextran, or from clinical dextran. It may be obtained by reacting the selected dextran with a carboxymethylating agent such as chloracetic acid, sodium chloracetate or chloracetamide, in water containing strong alkali metal hydroxide, preferably at 50-100 DEG  C. for 10 minutes to 2 hours, and precipitating the alkali metal salt of the dextran ether by means of a water-miscible aliphatic alcohol or ketone. The salt is dissolved in water, acidified to pH 2.0-3.0 and the free ether is precipitated with a water-miscible alcohol or acetone.  The iodocarboxymethyl dextran may be used as a disinfectant and as X-ray contrast media.ALSO:Aqueous solutions of iodo-carboxymethyl dextran containing per anhydroglucose unit an average of 0.5 to 2 carboxymethyl groups and in which an average of 1 to 2.5 of the hydroxyl groups initially present in the carboxy methyl dextran per anhydroglucose unit are replaced by iodine (for preparation see Group IV (a)), may be used as X-ray contrast media.  The iodo-carboxymethyl dextran may be derived from native dextran, a partial hydrolygate of dextran or clinical dextran.
Patent GB-322266-A (GB)
Title: Improvements relating to table and other lamp shades
IPC: F21V1/00
Filed: 1928-09-20
Abstract: 322,266. Gibson, F., (trading as Gibson & Co., F.). Sept. 20, 1928. Shades, silk, paper, and like.-A table or other r lampshade which can be packed flat for storage or transport comprises flat sections a of imitation parchment, paper, or like translucent or transparent material having a multiplicity of lacing holes b at their edges by which they may be laced together by means of raffia, fibre, or other lacing material c to give the desired shape. All the sections may be of the same shape, and the material may or may not be ornamented. The shade may be supported by means of a ring d laced to the upper edges of the sections and provided with an inner ring for engaging over an electric lamp holder, whilst the lower edge may also be laced at f, with or without a lower ring. Specification 23087/93 is referred to.
Patent GB-735930-A (GB)
Title: Improvements in or relating to sealing of openings in glass
Inventor: D EUSTACHIO DOMINIC
IPC: C03B23/24
Filed: 1953-06-12
Abstract: 735,930. Double glazed units. PITTSBURGH PLATE GLASS CO. June 12, 1953, No. 26993/54. Divided out of 735,926. Drawings to Specification. Class 56. The description in this Specification is the same as that in Specification 735,926, but the claims differ.
Patent GB-779315-A (GB)
Title: Apparatus for indicating and/or recording the formation of paper
IPC: D21G9/00
Filed: 1955-09-22
Abstract: 779,315. Photo-electric control systems. AUSTRALIAN PAPER MANUFACTURERS, Ltd. Sept. 22, 1955 [Sept. 23, 1954], No. 27102/55. Class 40 (3). Apparatus for recording the formation of paper comprises light-sensitive means producing a current representative of variation in the transparency of the paper which then modulates a carrier current, which is automatically maintained at a level such as to compensate for variation not due to the paper formation, and is demodulated to produce a component representative of variation in the transparency due to variation in the formation. A light beam from a lamp, not shown, is projected through a travelling sheet of paper and on to a photoelectric cell 3. A resistor 4 is included in the cathode circuit of the cell and is shunted by a valve 5 amplifying the radio frequency output of a Hartley oscillator 7. Thus a radio frequency carrier modulated by the photo-cell output is applied to a cathode follower 8 followed by a threshold adjuster 9 which passes only signals above a certain magnitude. The output of the threshold adjuster is amplified at 12, 13, 15 and rectified in a circuit 15 having a time constant such as to develop a voltage dependent on transparency variations unrelated to the formation of the paper. The rectifier output is fed to a valve 17 which shunts the screen grid of valve 13 thus acting as an automatic gain control. The output of amplifier 14 is also applied to a demodulator 15, amplifier 18, threshold adjuster 19 and an output valve 21, a rectifier output circuit 22 and meter 24.
Patent GB-941169-A (GB)
Title: Moulding of synthetic plastics
IPC: E04C2/16
Filed: 1962-07-16
Abstract: 941,169. Ornamenting. K. A. OESTERHELD. July 16, 1962 [July 17, 1961], No. 27214/62. Heading B6G. Thermoplastic or other synthetic plastic mouldings, for connection to roof coverings and wall linings formed of asbestos cement plates, are provided on their visible surfaces with a thin layer of asbestos fibres, applied when the mouldings are soft or by means of adhesive or cement.
Patent GB-862323-A (GB)
Title: Improvements relating to sequence control apparatus
Inventor: HALL ANTHONY
IPC: G05B19/04
Filed: 1957-08-29
Abstract: 862,323. Automatic programme control systems for rolling mills. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Aug. 19, 1958 [Aug. 29, 1957], No. 27272/57. Class 38 (6). In a system for automatically adjusting the screw-down setting of a rolling mill before each pass in accordance with a predetermined programme read from a loop of punched tape, five alternative programmes are interleaved on a single tape and. the movement of the tape reader is appropriately selected. Before each of the 20 passes that constitute any one programme, the binary digital code on the punched tape is read by a photo-electric reader, converted to an analogue signal and compared with the actual position of the screw-down (as measured by an inductive potentiometer), in a closed-loop servosystem, Fig. 1 (not shown), which controls the adjustment motor of the screw-down. When the adjustment has been made and the two signals are equal, a relay opens, Fig. 4 (not shown), and the tape is advanced to the next pass position in the selected programme so as to be read when a control switch is closed manually in readiness for the next pass. The servo-system is not disclosed in any detail. Since there are five interleaved programmes on the tape, it has to advance five positions at each pass for any one programme. In order to select a particular programme on the tape, a five-position programme selector switch can be set to energize a particular bank of a five-bank control uniselector. (A seven-bank uniselector is actually used, the remaining two banks being used for starting and stopping circuits.) The bank of contacts representing programme 1 is connected to contacts 0, 5, 10, &c. of a main uniselector; the programme 2 bank to contacts 1, 6, 11, &c. and so forth. The control uniselector moves one step per pass, and the main uniselector by homing on to the selected contact therefore moves the necessary five steps per pass. The main uniselector directly drives the tape loop and also has two additional banks of contacts which control indicator lamps.
Patent GB-338634-A (GB)
Title: Improvements in or relating to pneumatic upholstery
IPC: A47C4/54
Filed: 1929-09-09
Abstract: 338,634. Smith, W. H., and Stanley, H. C. Sept. 9, 1929. Cushions. - Pneumatic cushions with or without back rests have tubular ties of oval section arranged with their major axes in different directions. In the preferred arrangement longitudinal and transverse series of ties c are used and the latter are graduated in length from front to back or top to bottom of the cushion.
Patent GB-191804-A (GB)
Title: Improvements in or relating to holders for incandescent electric lamps
IPC: H01R33/46
Filed: 1921-10-14
Abstract: 191,804. Hunt, A. H. Oct. 14, 1921. Mounting electric lamps in lanterns.-An electric-lamp casing h is fitted with a holder having a body a of insulating material formed at one end with a socket b and bayonet slots b<1> and provided with a metal ring g fixed round the body and adapted to screw into an opening in the lamp casing. The dimensions of the ring g and of the opening are such that the lamp-bulb i can pass through the opening.
Patent GB-533095-A (GB)
Title: Improvements in and relating to resinous compositions
IPC: C08G63/06
Filed: 1939-10-06
Abstract: 533,095. Condensation products. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 6, 1939, No. 27324. Convention date, Oct. 7, 1938. [Class 2 (iii)] Resinous products are prepared by heating cyclohexanol or its homologues with a hydroxybenzoic acid in the presence of a suitable catalyst e.g. sulphuric acid. Specified cyclohexanol homologues are hexahydroalkyl phenols. Specified hydroxybenzoic acids are o-, m- and phydroxy benzoic acids and dihydroxybenzoic acids. In examples cyclohexanol is condensed with (1) p-hydroxybenzoic acid and, if desired in the presence of toluene or (4) with o-hydroxybenzoic acid by heating under reflux in the presence of sulphuric acid. The products may be used in the manufacture of enamels, lacquers, and as adhesives for bonding fibrous materials such as paper, cotton, silk, wool, asbestos and spun glass.
Patent GB-273321-A (GB)
Abstract: 273,321. I.G. Farbenindustrie Akt.- Ges. June 24, 1926, (Convention date]. Samples furnished. ketone-carboxylic acids are produced by condensing maleic anhydride with hydrocarbons having a pair of free positions in peri-position to one another, or their derivatives, other than reduction products of the anthraquinone series containing - oxygen in meso-position, in the presence of acid condensing agents. There are first formed, particularly when operating in a solvent of low boiling point, open chain carboxylic acids which on further condensation yield cyclic ketone-carboxylic acids. The latter can be directly obtained bv fusing the hydrocarbon with maleic anhydride and sodium-aluminium chloride. According to examples (1) naphthalene is treated with mateic anhydride in presence of aluminium chloride and carbon bisulphide at 15‹ C.; the open chain compound so produced is then heated with sodium-aluminium chloride to form a cyclic ketone-carboxylic acid; (2) the same cyclic compound is obtained by heating naphthalene with maleic anhydride and sodiumaluminium chloride; (3) corresponding compounds are produced from acenaphthene and maleic-anhydride. 1-Methylnaphthalene, alpha- or #- naphthol, and anthracene are also specified as parent materials and ferric chloride as an acid condensing agent.
Patent GB-383706-A (GB)
Title: Improvements in or relating to transporter trucks with lifting gear
IPC: B66C23/36
Filed: 1931-10-05
Abstract: 383,706. Load-handling machines. VINCENT, E. E. L., 34, Lee Park, Blackheath, London. ROGERS, W., 4, Druidsville Road, Calderstones, and WINGROVE & ROGERS, Ltd., Mill Lane, Old Swan, both in Liverpool. Oct. 5, 1931, No. 27573. [Class 78 (iii).] In a lifting and transporting appliance for bales, packages, &c., a jib 1, pivoted at 7 on a truck 2, carries a gripping device comprising a fixed jaw 3 and a jaw 4 which is pivoted at 26 on a bracket 25 and connected through a rod 27 with a pulley 30 around which passes a hoisting rope 8, anchored at 31 and operated by an electrically controlled winch 10. The jaws 3, 4 each comprise a pair of spaced arms connected at their lower ends by studded bridgepieces 19, 23 respectively. With the jib locked by a brake wheel 14 having a pinion 13 engaging a sector 11, rotation of the winch effects clockwise rotation of the jaw 4. When the package is gripped, the brake band 15 is released and the jib raised by the winch to the desired height where it is again locked. The rope is then slackened to permit the jaw 4 to be moved counterclockwise by the spring 5 and release the package. In a modification the jaw 4 slides on the jib, whilst in a further modification both of the jaws are movable and are operated simultaneously to grip or release a package.
Patent GB-1008723-A (GB)
Title: Improvements in or relating to a blowing device
IPC: C21C5/46
Filed: 1962-07-18
Abstract: 1,008,723. Blowing lances; feeding granular &c. material. BOT BRASSERT OXYGEN TECHNIK A.G. July 18, 1962 [July 21, 1961], No. 27650/62. Heading F4B. A lance comprises a water-cooled supply tube 2, for additives such as coke, iron ore or quicklime, concentric around a tube 1 for refining gas, such as oxygen, which is movable in a vertical direction within the additive supply tube, the nose portion 4 of the gas supply tube having, internally, a Venturi, and externally, a frusto-conical portion which fits into an internal conical portion 9 on the nose piece 11 of the additive supply tube. This conical portion on the additive supply tube is surmounted by a further conical portion which allows the complete nozzle to act as an adjustable additive valve when the inner nose portion is moved. In a modification, Fig. 2 (not shown) the mating parts of the two nose portions are cylindrical.
Patent GB-339321-A (GB)
Title: Improved dye-printing plate and sensitized-material for producing it, for use in dye-impression color photography
IPC: G03C7/20
Filed: 1929-07-03
Abstract: 339,321. Thornton, J. E. July 3, 1929. Divided on 339,296, [Class 98 (ii), Photographic processes &c.]. Change-boxes, self - contained; roll - film cartridges. - A duplex dye-printing plate for producing two-colour pictures by dye-impression printing, having upon its opposite faces a pair of dye images of complementary character, is produced by exposing in a camera from one side only a sensitive film bearing complementary colour-sensitive emulsions on opposite sides with associated light filters. The film may be sensitized for blue-green, preferably on the side which is to face the camera lens, and for orangered on the other side; but other combinations of complementary colour-sensitive layers may be used. A yellow or orange light-filter in the form of wash-out dye may be applied to the front face of the material or stained right through the front emulsion layer. A filter may also be interposed between the front and back emulsion layers as by dyeing the support, by dyeing the back emulsion layer, or by the provision of a dyed layer between the support and the back emulsion layer. The emulsions are not hardened, and their speed, character, and silver content are adjusted to yield by the single exposure two images of equal printing density. Marks are printed upon each emulsion to indicate the dye subsequently to be used therewith and to indicate the layer which is to face the lens of the camera. The material may be made up in the form of roll film cartridges in which the film is wound on a flanged spool, and is provided with either an opaque backing strip, or with opaque leader strips and an opaque gelatine backing layer which becomes detached in the developing operation; or it may be made up into film packs, in which each film is provided with either an opaque backing strip extended to form a pull-tab, the strip being preferably of single thickness behind the film and of double thickness along the extension, or with an extension of the film itself to form the pull-tab and with an opaque detachable gelatine coating on the back. Specifications 339,296 and 339,319, [both in Class 98 (ii), Photographic processes &c.], are referred to.
Patent GB-1527056-A (GB)
Title: Fluid seals
IPC: G05D16/10
Filed: 1977-05-19
Abstract: 1527056 Valves; seals FLEXIBOX Ltd 19 May 1977 [30 June 1976] 27742/76 Headings F2V and F2B The differential-area spool 31 of a fluid actuated valve has a first drilling 34, 35 which, in the position of the spool, connects the end chambers 32, 33 of the valve housing, and a second drilling 37, 38 which, in a second position of the spool, connects the chamber 33 with a vent 40. The valve is coupled between primary and secondary fluid seals 11, 12, each of which comprises a circulatory fluid system, the valve serving to maintain a desired pressure difference between the two systems. Rotatable seal rings 17, 18 effect circulation in the systems.
Patent GB-224379-A (GB)
Title: Improvements in or relating to shock absorbers
IPC: B60G15/04
Filed: 1923-11-05
Abstract: 224,379. Trier, V. A. Nov. 5, 1923. Vibration-dampers.-In friction shockabsorbers of the kind comprising a pair of fixed friction plates secured to the sprung part of a vehicle and carrying a pivot on which the adjacent ends of a pair of arms are mounted to rotate, the remote ends of the arms being mounted on the axle one at each side of the central portion thereof, the friction discs are clamped against a plate integral with a lug secured to the centre of the spring or to the vehicle frame. In the form shown, the shock-absorber comprises two fixed friction plates E, D, the plate E having an extension E<1> secured to the spring G. Pivoted between the plates E, D are discs carried by the arms A, B, friction washers F being interposed. A variable degree of friction is obtained bv means of the nut C<1> and spring washer C<2> in known manner. The remote ends of the arms A, B are secured by universal joints H, K to the other relatively movable part of the vehicle such as the axle J. The invention is specially applicable to vehicles having transverse springs.
Patent GB-640729-A (GB)
Title: Anti-corrosive paint or varnish
IPC: C09D5/08
Filed: 1947-10-17
Abstract: Amine, e.g. diethanolamine, methylamine, diethylamine, triethanolamine, or morpholine, salts or ammonium salts of nitrophenol, nitrocresol or nitronaphthol are added in a minor amount, e.g. 0.2-2.0 per cent, as anti-corrosive ingredients in paints or varnishes comprising binders, e.g. nitrocellulose, coumarone, urea-formaldehyde, phenol-aldehyde or alkyd resins, in an organic solvent, e.g. benzene, alcohols and their esters, chlorinated hydrocarbons, acetone, cyclohexane or silicanes. Drying agents, e.g. naphthenates or salts of linoleic or resin acids, plasticizers, e.g. phthalyl esters or tri-cresyl phosphate, pigments, e.g. white lead, zinc white or chromates of aluminium, copper or zinc, and organic dyes, may also be present.  The salts may be dissolved directly in the paint or in a diluting agent, e.g. turpentine, heavy benzine, xylene, or water, or mechanically dispersed in a finely-divided state.ALSO:Amine, e.g. diethanolamine, methylamine, diethylamine, triethanolamine, or morpholine salts or ammonium salts of nitrophenol, nitrocresol or nitronaphthol are added in minor amount, e.g. 0.2-2 per cent, as anti-corrosive ingredients to paints or varnishes comprising binders, e.g. chlorinated rubber, shellac, dammar or copal resins, in an organic solvent, e.g. benzene, alcohols and their esters, chlorinated hydrocarbons, acetone, cyclohexane or silicones.  Drying agents, e.g. naphthenates, or salts of linoleic or resin acids, plasticizers, e.g. phthalyl esters or tricresyl phosphate, pigments, e.g. white lead, zinc white, and chromates of aluminium, copper, zinc, and organic dyes may also be present.  The salts may be dissolved directly in the paint, or in a diluting agent, e.g. turpentine, heavy benzine, xylene, or water, or mechanically dispersed in a finely-divided state.
Patent GB-1299257-A (GB)
Title: Titanium-based alloys
IPC: C22C14/00
Filed: 1970-06-09
Abstract: 1299257 Titanium alloys TITANIUM GP and UGINE KUHLMANN 9 June 1970 [9 June 1969] 27852/70 Heading C7A An alloy has a composition in the following range in per cent by weight Al 5 - 6À5 V 5 - 6À5 Sn 1À5 - 2À5 Zr 4À3 - 6À7 one or more beta-eulectoid elements each in amount 0-1% at least one being present in amount not less than 0À1% Ti and impurities the remainder. The alloy may contain one or more of N, C, O, B, H up to 0À2% each. The beta-eutectoid elements may be selected from Cu, Fe, Mu, Ni, Co, Si, W, Be. The alloy may be annealed at 700-900‹C for not less than 30 minutes and cooled at a rate not exceeding 50‹C per minute.
Patent GB-782958-A (GB)
Title: Revolving field for electrical machines with salient poles
IPC: H02K1/28
Filed: 1955-09-30
Abstract: 782,958. Poles for dynamo-electric machines. AKT.-GES. BROWN, BOVERI & CIE. Sept. 30, 1955 [Oct. 1, 1954], No. 27853/55. Class 35. The individual poles of a rotating field consist of several solid parts a which form the actual pole shoe and part of the pole core k, a pole coil b being mounted on the magnet wheel p before the pole is assembled. The magnet wheel has claw-like elements i which project into the pole core and so secure the parts a to the wheel. A transverse slot c is provided for each pole, and the pole parts are inserted successively into the slot and then moved in an axial direction along the magnet wheel into the desired position within the coil b. Filling pieces d for the slot have projections n engaging the slot, and a locking plate e is fitted with keys f. The elements a, d and e are held by bolts g to prevent shift in the circumferential direction. Screws h connect the parts a to the claws i of the magnet wheel. The slots c are preferably situated at the centre of the magnet wheel.
Patent GB-808270-A (GB)
Title: Improvements in and relating to titanium-base alloys
IPC: C22C14/00
Filed: 1957-09-04
Abstract: An alloy for use in introducing boron into steels has a composition within the following range in per cent by weight, Ti 61-90; B 0.005-0.5; Al 0-5.0; Fe and impurities the remainder. The alloy may be added to molten steel in sufficient amount to impart 2-50 parts per million of boron to the resulting steel. In an example an alloy of the composition Ti 66.66, Fe 27.39, Al 3.64, Si 0.04, Cu 0.04, P 0.01, C 0.06, N 0.13, Cr 0.31, Mo 0.04, O 0.60, H 0.014, S 0.011, B 0.06, Mn 0.3 was used in the production of a steel containing C 0.055, Mn 1.57, Si 0.84, Cr 14.85, Ni 25.46, Ti 1.89, Al 0.22, S 0.006, P 0.025, Mo 1.28, V 0.33, O 0.003, H 0.009, B 0.0007 and the balance Fe.  The master alloy of the invention may be made by adding titanium and ferro-boron through an inert atmosphere to a melt of iron and aluminium in an electric furnace.