baber/WOPTO huggingface dataset:
Patent GB-1002029-A (GB)
Title: Removal of iron from iron minerals and mineral residues containing iron
IPC: C22B1/02
Filed: 1962-03-01
Abstract: Finely-divided iron minerals, e.g. iron ores containing silicates, alumina, aluminates, phosphates, sulphides, vanadates, carbonates, Cr and/or Ni oxides, or Mn, Cr, Ni, Al or Ti ores containing iron compounds, or residues containing iron oxides, such as red slimes or black furnace dusts, are treated with an aqueous caustic soda solution containing more than 300 g./l. Na2O at between 100 DEG  and 200 DEG  C. for between 10 and 180 minutes, the proportion of mineral or residue being between 10 and 500 g./l. of the solution, and separating ferromagnetic iron oxide from the suspension by magnetic means.  Where the mineral or residue is deficient in ferrous iron, a predetermined quantity of ferrous compound such as ferrous sulphide, carbonate or sulphate, or sodium ferrite is added to the caustic soda solution to ensure that as much iron as possible is converted into Fe3O4.
Patent GB-1180233-A (GB)
Title: Modified Spiramycin
Inventor: ASTRUC JEAN
IPC: A61K47/48
Filed: 1966-02-23
Abstract: 1,180,233. Spiramycin-resin preparations. J. ASTRUC and A. SAMBOT. 23 Feb., 1967 [23 Feb., 1966], No. 8043/66. Heading A5B. [Also in Division C3] Antibiotic products are derived from the reaction between an aqueous solution of spiramycin hydrochloride and a polymethacrylic acid ion-exchange resin cross linked with divinyl benzene. The resin is preferably reacted in the sodium salt form. The products have reduced toxicity and are free of the bitter taste associated with the spiramycin free base and conventional salts thereof. The products may take the form of flavoured powders or flavoured dry syrups, and can also be administered parenterally.
Patent GB-214418-A (GB)
Title: Spark arresting device
IPC: F23J15/02
Filed: 1923-03-21
Abstract: 214,418. Cumming, J. B. March 21, 1923. Spark arresters.-Relates to spark arresters for steam wagons of the kind comprising segments 1, 2 of wire netting pivoted at 4, 5 to the outside of the funnel 3 and connected by links 6, 7 to a sliding bar 8 which is operated by the driver to open or close the segments. According to the invention, the bar 8 is secured in any intermediate position by a nut screwed on to a bolt 9 which passes through a slot 10 in the bar. Reference has been directed by the Comptroller to Specification 8783/05.
Patent GB-902471-A (GB)
Title: Improvements in or relating to insulating members for electric contact springs or sets of contact springs
IPC: H01H11/06
Filed: 1959-03-10
Abstract: 902,471. Electric switches. EBERLE, O., and KOHLER, H., [trading as EBERLE & KOHLER KOMM.-GES.]. March 10, 1959 [March 11, 1958], No. 8229/59. Class 38 (5). Switch or relay contacts are supported by insulators having a conical annular groove 1c around the hole, the groove matingly receiving a skirt 1a of the adjacent insulator. A recess may be provided instead of a male member for an insulator to terminate the stack.
Patent GB-477302-A (GB)
Title: Improvements in or relating to electric shaft furnaces
IPC: F27B1/08
Filed: 1936-03-19
Abstract: 477,302. Shaft furnaces. OESTERREICHISCH AMERIKANISCHE MAGNESIT AKT.-GES. March 19, 1936, Nos. 8252 and 8253. Void. Convention dates, Jan. 10 and Feb. 19. [Class 51 (ii)] [Also in Group XI] An electric furnace more particularly adapted for the reduction or distillation of volatile metals such as magnesium, comprises a shaft having an openwork wall 2 in the high temperature zone, which allows the products of distillation to be withdrawn through the surrounding casing 3, 4, and to be passed to a condenser. The shaft is enclosed in an outer casing 13 with an intermediate lagging, and is anchored thereto by the discharge pipe 5, and by supports 14 welded to the casing 4 and bearing on the outer casing through insulating blocks 15. The sections of the shaft and the interposed electrode rings 7 are pressed firmly into contact by springs 10, 11. In a modification, Fig. 6 (not shown), the. casing around the shaft through which the distillation products are withdrawn is of refractory material, and is also spring-loaded, so that it can expand and contract independently of the shaft.
Patent GB-1089464-A (GB)
Title: Improvements in gas-cushion vehicles
Inventor: HUNT ROWLAND DELVILLE
IPC: B60V1/16
Filed: 1965-02-25
Abstract: 1,089,464. Air cushion vehicles. HOVERCRAFT DEVELOPMENT Ltd. March 15, 1966 [Feb. 25, 1965], No. 8255/65. Heading B7K. An air cushion vehicle in which the sides at least of the cushion space 13 are bounded by a segmented flexible skirt is provided at its rear and/or front ends with a transversely extending inflatable skirt portion 16 comprising flexible sheet material 17 attached at 18 and 19 to the underside of the vehicle body and inflated by air bled through a duct 25 from the main cushion, drain holes 26 being provided. To protect the sheet 17 from wear, as when passing over an obstacle 11a, a plurality of laterally spaced strips 27 of flexible wearresistant are attached to the body at 28, the rearward portions extending partially around and spaced from the rear curved portion of the skirt. Alternatively the members 27 may be tubes inflated from a source separate from that which supplies the cushion so that when the vehicle rests on water with skirt 16 deflated, the buoyant members 27 will hold the skirt collapsed against the underside of the vehicle body and thereby prevent the ingress of water.
Patent GB-1540131-A (GB)
Title: Dielectric fluids and electrical devices containing them
IPC: C08L83/00
Filed: 1976-03-02
Abstract: Dielectric fluids are described which contain a relatively large quantity of a fluid polyorganosiloxane and a smaller quantity of a nitro-substituted organic compound which is soluble in the siloxane. This nitro-substituted compound may be a suitable aromatic, aliphatic, cycloaliphatic compound, or a mixture of two or more such compounds. Furthermore, electrical devices, for example transformers or capacitors, are described which contain these dielectric fluids. The dielectric fluids described here do not lead to environmental pollution, which the use of polychlorinated diphenyl compounds results in. In comparison with dielectric fluids based on siloxane, the fluids described here have the advantage that their corona starter voltage and their corona end voltage are high, and the two values are close together.
Patent GB-1455625-A (GB)
Title: Buildings for livestock
IPC: A01K1/00
Filed: 1974-02-23
Abstract: 1455625 Buildings for livestock T A ARCHIBALD 19 Feb 1975 [23 Feb 1974] 8317/74 Heading AIM A part-circular cross-sectional Nissen hut type building for livestock comprises arcuate sheeting strips 10A, made from wood or from corrugated steel, glass-reinforced plastics or asbestos, arranged side by side and overlapping to be joined to similar strips 10B along the buildings summit. Some of the strips 10A, 10B do not quite reach the summit to provide vents 16. One or both of the ends 32, 34 of the building may be removable or may be provided with a doorway 36. The concrete foundations 12 are formed with gutters 20, and it is arranged so that the ground slopes longitudinally of the building to permit drainage. A frame made from either wood 22 or steel tubing 22', comprises bars 24, and post 26 attached to rails 28, 30 and to a concrete central passageway respectively, to define between each a cubicle for one animal, the size of frame 22 being chosen so that animal excreta falls on the central passageway.
Patent GB-214601-A (GB)
Title: Method of winding for the improvement of the commutation in electric machines provided with commutators
IPC: H02K23/38
Filed: 1924-04-02
Abstract: 214,601. Compagnie Electro-Mecanique. April 16, 1923, [Convention date]. Windings.-To improve commutation, armature windings are arranged so that each section under commutation and receding from one of a set of brushes remains shunted by a winding located in different slots and in circuit with brushes of the same set or of different sets, the number of armature slots being indivisible by the number of pairs of parallel circuits, and the number of winding sections per slot being a multiple of the number of parallel circuits divided by the greatest common divisor of the number of slots and number of pairs of circuits. In the arrangement shown in Fig. 1, as the brush B leaves the slot E the section a remains shunted by the sections b, d and c through equipotential connections shown in dotted lines, the sections b and d themselves being short-circuited by the brushes. The shunt circuit may comprise a separate auxiliary winding and in Fig. 7 this winding is shown located in the bottom of the slots and comprises half as many turns in each slot of a pair of windings a as there are in the slot b diametrically opposite. Fig. 8 shows one of the auxiliary windings on a three phase armature with the number of turns per slot and angular distance between the slots as indicated. In this arrangement, the shunt circuit is disposed under brushes of different sets. In armatures where the number of slots per pole is small, or where the current is not sinusoidal, the equipotential connections have a moderate resistance. Reference has been directed by the Comptroller to Specification 9990/03.
Patent GB-612019-A (GB)
Title: Thermosetting cements for optical systems
IPC: G02B1/00
Filed: 1946-03-19
Abstract: Transparent thermosetting resins are prepared by partially polymerizing a mixture of (a) a compound containing a single <FORM:0612019/IV(a)/1> group, (b) a divinylbenzene or acrylic anhydride or an a -alkacrylic anhydride and (c) a diallyl or di-2-alkallyl compound in which the allyl or 2-alkallyl groups are separated by a chain of 11-14 atoms.  (a) May comprise methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl or tert-butyl a -methacrylate, methyl, ethyl, n-propyl or n-butyl acrylate, vinyl acetate, propionate or butyrate, styrene or 1 - ethyl - 4 - vinylbenzene; (b) may be a -methacrylic or a -ethacrylic anhydride; (c) is preferably the bis-allyl or bis-2-methallyl carbonate of diethylene or triethylene glycol.  The polymerization is preferably effected by heating in the presence of peroxides or alkali metal persulphates in an atmosphere of air, nitrogen or carbon dioxide. Prism and lens systems are cemented by applying the resin to a surface of one element, applying a second element to the treated surface, working out excess, trueing and heating to set the cement.
Patent GB-609624-A (GB)
Title: A plastic bituminous material
IPC: C08L95/00
Filed: 1946-03-19
Abstract: A bituminous composition comprises coal-tar pitch mixed with industrial anthracene paste in the approximate proportions of 65:35, together, if required, with small amounts of fillers or anthracene oil.
Patent GB-1143787-A (GB)
Title: Alumina hydrate
Inventor: BASS JOHN HENTON
IPC: C01F7/142
Filed: 1966-02-25
Abstract: 1,143,787. Hydrated alumina. REYNOLDS METAL CO. 25 Feb., 1966, No. 8504/66. Heading C1A. [Also in Divisions C3, C4 and C5] An alumina hydrate has from 1À4 to 1À6 mols. of water by mol. of alumina, an X-ray diffraction pattern similar to boehmite, a specific surface area of 300-600 sq. m/gm. and an average crystallite size in the range from 20-40 . Preferably the hydrate has an average particle diameter of 3-10 millimicrons, contains no more than 0À02% Na 2 O, and the area under the 28À1 2# diffraction peak in the X-ray diffraction pattern is from 40% to 90% of the corresponding area for standard boehmite; the hydrate being able to absorb water even at low relative humidity which water may be desorbed simply by drying at 93À3 to 104À4 C. If the hydrate is decomposed in a bomb in the presence of water at a temperature of 160-200 C., a well crystallized α-alumina monohydrate is produced having a specific surface area in the range from 100-200 m<SP>2</SP>/gm. and a crystallite size in excess of 60. The alumina hydrate of the invention may be produced by a process in which (a) amorphous aluminium hydroxide is precipitated substantially free of crystalline alumina hydrate by reacting alkali metal aluminate solution with at least an approximately stoichiometric amount of an acid at a rate such that the precipitation of aluminium hydroxide is substantially completed by neutralization instead of by hydrolysis of the alkali metal aluminate, at a pH between 10 and 11 while maintaining the reaction temperature between 25 and 60 C, (b) the precipitate is separated from the mother liquor, washed and reslurried in an aqueous medium so that the precipitate is fully dispersed whilst its amorphous condition is retained, and (c) the slurried precipitate is aged at an elevated temperature until the amorphous aluminium hydroxide is converted into the crystalline alumina hydrate specified above. Preferably the alkali metal is sodium, and step (c) is followed by (d) filtering the aged slurry and (e) washing and drying the resulting filter cake. The sodium aluminate solution used may be stabilized by the presence of 0À2 to 1À0 gm. of SiO 2  per litre of solution and preferably have a ratio of Al 2 O 3  to free soda in the solution of from 0À5: 1 to 0À7: 1. The preferred neutralizing acid is CO 2 . The product may be coated, e.g. with stearic acid, surface esterified, e.g. isopropanol or butanol, and may be used as an absorbent, desiccant, a filler, for rubber and plastics, a coagulant for latex, and a pigment particularly when coloured organic dyes e.g. alizarin blue are adsorbed on to its surface. Further uses are as a bleaching agent and a catalyst support material.
Patent GB-381482-A (GB)
Title: Improvements in ozone generators
IPC: C01B13/11
Filed: 1932-03-22
Abstract: In an ozone generator, for example, that described in Specification 128,867, [Class 1 (i), Chemical processes &c.], the rods which carry the current to the electrodes are secured to an insulating baseplate and pass through or into a similar top plate, these plates being connected by bars of similar insulating material which retain the sets of electrodes in position by engaging the adjacent sheets of dielectric material.  In the arrangement shown, three sets of electrodes are arranged in tandem.  Each set consists of electrodes a, b with projecting tongues, alternate electrodes being oppositely arranged and separated by dielectric sheets c preferably of mica. The dielectric sheets are spaced apart by insulating strips d (see Fig. 3) extending the full width of the sheets.  The assembly is clamped together by rods e, f which pass through apertures in the projecting tongues of the electrodes and through spring washers g preferably of aluminium, which maintain the spacing of the electrodes.  The rods e, f are screwed into an insulating baseplate h and over the electrode assembly is placed an insulating top plate m and a metal cover-plate <PICT:0381482/III/1> <PICT:0381482/III/2> <PICT:0381482/III/3> n.  The electrode sets are spaced from each other by bars q of insulating material and side-plates t, t are secured to these bars to retain the distance-pieces d.  The upper ends of some of the rods project through the top plate and are fitted with terminals o, p, the electrodes in the central set being connected by links r.  The assemblage can be inserted in a metal container u provided with inlet and outlet apertures v, w.
Patent GB-1416871-A (GB)
Title: Removal of hydrogen aulphide
IPC: C01B17/06
Filed: 1972-02-24
Abstract: 1416871 Purification of sulphur slurries BRITISH GAS CORP 28 Dec 1972 [24 Feb 1972 14 June 1972 6 July 1972] 8551/72 27765/72 and 31587/72 Heading C1A Aqueous sulphur slurries are treated with gaseous CO 2 , heated and passed to an autoclave in which gaseous CO 2  is present under pressure, the slurry is further heated so as to melt the sulphur and molten sulphur and liquor are withdrawn separately from the autocalve. The sulphur slurry may contain 2 to 10% weight/ weight of sulphur and this may be concentrated in a centrifuge to 30-50% weight/weight prior to autoclaving. A portion of the liquor discharged from the autoclave may be admixed with the concentrated slurry to facilitate flow thereof.
Patent GB-564045-A (GB)
Title: Improvements in and relating to frequency modulation apparatus
IPC: H03C3/40
Filed: 1943-05-28
Abstract: 564,045. Phase and frequency modulation. BRITISH THOMSON-HOUSTON CO., Ltd. May 28, 1943, No. 8573. Convention date, May 28, 1942. [Class 40 (v)] Relates to phase modulation systems in which two or more phase-displaced carrier voltages are amplitude modulated and combined vectorially to produce the phase-modulated wave ; and comprises means for obtaining a linear relation between signal voltage and phase deviation by deriving a voltage proportional to the amplitude modulation of the combined wave and applying it as an additional or correcting phase modulation voltage. As shown, the carrier from a source 10 is applied in phase opposition to the inner grids of the valves 11, 13 and in quadrature to the inner grid of the valve 12. The signal from a microphone 16 is applied in phase opposition to the screen grids of valves 11, 13, but the valve 12 is unmodulated,. The anodes of the three valves are connected to each other and to a tuned output circuit 43, 44 feeding a phase-modulated wave to the aerial 15 through an amplifier 14. Amplitude modulation also present in the carrier is rectified by the diode 71, the load resistance 72 being connected in the grid circuit of an amplifier 81, the anode resistance 50 of which is in the screen lead of the valve 12. A vapour discharge device 82 is connected between the cathode of valve 81 and earth. In this way, as the depth of modulation rises, the screen of valve 12 becomes less positive and the strength of its unmodulated carrier output is reduced. This applies a correction of phase angle to the carrier in the circuit 43, 44, and by adjustment of the resistance 50 a linear relation is obtained between the phase deviation and the modulating signal. The valve 81 may be omitted if the diode 71 is inverted and a portion of its load resistance 72 is included in the screen circuit of the valve 12, Fig. 9 (not shown). A condenser-resistance coupling may replace the direct connection to the.grid of the valve 81, and a resistance may be used in-place of the discharge device 82, Fig. 10 (not shown). A low-pass filter may be inserted between the rectifier 71 and the valve 81 for reducing the effect of the higher frequency components of the modulating signal, Fig. 8 (not shown). The system permits a large phase shift of the carrier wave and reduces the amount of frequency multiplication necessary to produce a suitable frequency deviation. Specification 562,432 is referred to.
Patent GB-493825-A (GB)
Title: Apparatus for operating, locking and controlling switches for railways, tramways and the like
IPC: B61L5/00
Filed: 1938-03-21
Abstract: 493,825. Operating railway points; miniature signals. SOLA, E. March 21, 1938, No. 8689. Convention date, March 25, 1937. [Classes 104 (i) and 105] The point tongues 1, 2, Fig. 3, are rigidly coupled by rods 4, 5, the latter being extended at 6 and connected to a rocker 7 pivoted at its ends to two slides 8, 25 driven differentially and with a dead stroke from an actuator pin 61, locking means being provided. Each slide has two sliding heads 10, 27 each with three parallel faces 11, 12, 13 connected by inclines 14, 15 to coact with the inclined ends 49, 50 of a transversely-sliding lock member 48. Each sliding head also has a rack 24 engaged by a pinion 60 on pin 61, and two cams 16, 17 engaged by pair of slides 54, 55 coupled by a rocker 58 connected to ah indicator in the control room. The slides have extensions 65, 66. Connected by a pin 67 and spring 68. In operation from the position shown, a pull on pin 61 will first move head 10 down so that lock 48 may move to contact face 12, then both heads move together, then head 10 so that lock 48 may contact face 11 and finally head 27 moves down to complete the stroke. Rocker 58 is actuated at the start of this operation and rocker 59 at the finish. A similar series of steps takes place when the points are trailed through pin 61 being allowed to move by friction or other yielding means in the actuation means. To indicate trailing through, extension 66 may carry a, spring latch 71, Fig. 6, engaging extension 65 which is coupled to pin 67 by a shearable pin.
Patent GB-499623-A (GB)
Title: Improvements in and relating to heating conductors for electric furnaces
IPC: H05B3/18
Filed: 1938-03-22
Abstract: 499,623. Electric heating resistances. NAAMLOOZE VENKOOTSCHAP MOLYBDENUM CO. March 22, 1938, No. 8742, Convention date, July 22, 1937. [Class 39 (iii)] A heating element for an electric furnace comprising a metallic or non-metallic conductor surrounded by a sheathing of heat insulating ceramic material impervious to gas is characterized in that the thickness of the sheathing is such that the fall in temperature therein does not exceed 70‹ C. In a concentric arrangement of the heating conductor and sheathing the maximum thickness of the sheathing is dimensioned according to the rule d being the thickness of the envelope in centimetres, r, the conductor radius in cms., A the coefficient of heat conductivity of the sheathing in cal. /cm., q the specific electric load in cal. /cm. In the case of strip-shaped conductors from which heat is emitted on both sides, the maximum thickness of the sheathing is calculated according to the rule b being the width of the conductor in centimetres, and d, #, q q representing the same quantities as above.
Patent GB-1098596-A (GB)
Title: Improvements relating to fluid flow jets, particularly for carburetters
Inventor: SHORROCK CHRISTOPHER
IPC: F02M19/02
Filed: 1965-03-02
Abstract: 1, 098, 596. Spray carburetters. RUBERY, OWEN & CO. Ltd. Dec. 29, 1965 [March 2, 1965], No. 8781/65. Heading F1B. In a carburetter in which a fuel supply conduit 35, Fig. 1 and a throttle 24 are moved together and apart to control fuel supply, flow through mixing chamber 11 is controlled by a variable Venturi throttle 13, 14, Fig. 2, to achieve minimum turbulence. The movement of needle 24 is proportional to the movement of pivoted throttle plates 13, 14. A spring-loaded piston 37 moves spindle 30 in accordance with changes in inlet manifold pressure communicated through opening 34. The fuel enters mixing chamber 11 through the main jet emulsion tube 19. A compensating jet tube 20 is supplied with fuel through a conduit (44), Fig. 3 (not shown) directly from float chamber 40 and incorporates an adjustable air bleed (45).
Patent GB-767651-A (GB)
Title: 4-sulphonyl derivatives of salicylic acid
Filed: 1955-03-25
Abstract: The invention comprises salicylic acid 4-sulphonamide, the N : N-di-(n-propyl)-, N : N-di-(n-butyl)-, N : N-dimethyl- and N-phenyl derivatives thereof and N : N1-bis-(3-hydroxy-4-carboxyphenylsulphonyl)-m- and -p-phenylene diamines; and the preparation of these compounds, the corresponding o-phenylene diamine compound and other N : N-dialkyl salicylic acid 4-sulphonamides, wherein the alkyl groups each contain 1-8 carbon atoms, by diazotizing 4-aminosalicylic acid, reacting the diazo compound formed with a solution of hydrogen chloride and sulphur dioxide in the presence of a catalytic amount of a copper salt and then reacting the resulting salicylic acid 4-sulphochloride with ammonia or an appropriate amine.  Suitable solvents are water and/or organic solvents such as glacial acetic acid, and the diazotization may be effected in the hydrogen chloride-sulphur dioxide solution. Examples describe the preparation of each of the compounds referred to specifically above.  Reference is also made to acylation and esterification of the compounds of the invention.