baber/WOPTO huggingface dataset:
Patent GB-328520-A (GB)
Title: Improvements in the manufacture of glass
IPC: C03C4/08
Filed: 1929-08-02
Abstract: 328,520. Seabrook, H., (Deutsche Spiegelglas-Akt.-Ges.). Aug. 2, 1929. Production of metal.-Glass for absorbing ultra violet and infra red rays is made by adding cobalt oxide and iron oxide to a batch for producing glass which is substantially colourless, and in melting the batch under reducing conditions. The iron oxide is generally in the form of ferrosoferric oxide, and the proportion of each oxide is generally not less than 0.3 per cent of the weight of the finished glass. The absorption of the heat rays is increased by adding arsenic or antimony oxide, the proportion of each being not less than 0.5 per cent of the weight of the finished glass. For reducing purposes, carbon or other organic substances, or a small quantity of tin chloride, is added to the batch. The glass may be used in a screen for viewing incandescent bodies, and the colour of a radiant body when seen through the glass is faintly blue.
Patent GB-305954-A (GB)
Title: Improvements in the manufacture of playing balls having a covering of leather and the like material
IPC: A63B41/08
Filed: 1927-09-10
Abstract: 305,954. Wilson, G. D. Sept. 10, 1927. No Patent granted (Sealing fee not paid). Balls. - In a football, punch-ball, or like inflated ball having a cover formed off a number of pieces of leather, canvas or similar material, the edges of the pieces are joined together by the interlocking of dovetail portions 6 on the one piece with slots 7, of smaller size, on another piece, so that the material overlaps around the edges of the joint. The slits 8 leading to the slots 7 are stitched across after the adjacent pieces have been positioned. Alternatively or additionally the dovetail portions 6 may be connected by serrated strips of leather stitched thereto. The ball shown in Fig. 2 is formed of two circular pieces 1, six annular pieces 4, a rectangular piece 12 and a filling piece 11.
Patent GB-867226-A (GB)
Title: Method of producing n-substituted products of 2,4-diamino-1,3,5-triazine
IPC: C07D251/18
Filed: 1957-07-26
Abstract: Inorganic acid salts of 2:4-diamino-1:3:5-triazines of the formula: <FORM:0867226/IV (b)/1> wherein R1, R2 R3 and R4 are the sam or different and are hydrogen, alkyl, aryl, substituted aryl (e.g. chlorphenyl) or a heterocyclic radical, provided that not more than three of the substituents R1 to R4 are hydrogen, are prepared by heating an inorganic acid salt of a diguanide of the formula: R1R2N-C(NH)-NH-C(NH)-NR3R4  with concentrated formic acid, followed by treatment of the reaction products with water.  Any tendency for the triazine salts to hydrolyse to the free base may be prevented by adding to the treatment water a small amount of acid corresponding to the salt required.  The process is applicable to the preparation of both salts of volatile inorganic acids (e.g. hydrochloric or sulphur acids) and salts of non-volatile inorganic acids.
Patent GB-948745-A (GB)
Title: Improvements in or relating to an electrode for an electric cell or battery
IPC: H01M4/29
Filed: 1960-07-07
Abstract: <PICT:0948745/C3/1> An electrode for a cell or battery is made by depositing a metal in micro-porous form on a carrier and then densifying the adherent layer by mechanical pressure. The microporous layer, e.g. of Zn, Ag or Cd on a metal sheet support of Cu, Ag or Ni, or galvanized iron, is formed using an electrolyte of low concentration in metal ions, e.g. below 10% by weight of metal, but of high conductivity, at temperatures below 50  DEG C., and at a potential to avoid gassing, e.g. 5V with 10 to 15 cms. between the electrodes. The high conductivity is achieved by adding non-plating salts which may "complex" the metal ion or impart "common ion" properties, e.g. using an alkaline zincate electrolyte, cadmium halide and sodium and ammonium chloride, or alkaline silver cyanide. The over-voltage and viscosity of the electrolyte may be usefully increased by adding polysaccharides, proteins, e.g. gelatin, or soluble polymers, e.g. polyvinyl pyrollidone. In a suitable apparatus, perforated or plain strip of Cu, Ag, or Zn is cleaned and may also be etched, and after masking at the edges where electrodes are to be attached, is then fed from a coil 30 into a plating tank containing electrolyte 32, through which it is led over non-conducting guide rolls R, and between anodes 34 of the metal to be deposited. The electrolyte is circulated through filters 35 with minimum agitation of the liquid.  The coated strip then passes through adjustable pressure rollers 37 to compact the coating to the desired density, and is cut to shape at stage 38. Preferably the strips, especially in the case of zinc, are stacked in racks, washed, and fed into an amalgamating tank containing a mercury salt where 0.25-5% by weight of the coating in terms of mercury is absorbed in the coating.  The strips are then rinsed, dried, the masking removed, and lead strip terminals are welded on.  The degree of compaction at stage 37 increases the density of the porous coating of particle size about 1-8 m , to about 35-65% of the solid metal.  The mercury amalgamation step increases the over-potential property of the electrode, and reduces gassing in use.  In a modified apparatus, using sheet cut to size, a bi-metallic electrode is made by mounting a sheet of silver centrally in a two-compartment cell, one side containing a cadmium or zinc electrolyte and anode, and the other silver. After compaction the silver coating may be oxidized anodically.
Patent GB-171481-A (GB)
Title: Improvements in or relating to variable electrical condensers
IPC: H03H5/00
Filed: 1920-08-16
Abstract: 171,481. Sullivan, H. W., and Joseph, J. Aug. 16, 1920. Condensers.-In a combined variable condenser and variable inductance, the movable coil of the inductance is of pancake form, Fig. 3, and is bent to conform to a cylindrical surface coaxial with the axis of rotation of the movable element of the condenser. In the construction shown, the movable coil 10 is mounted on a cylinder 7 carried by a plate 8 which rotates with the movable vanes of the condenser. The cylinder 7 rotates between fixed cylinders 3, 6 which are secured to the housing 4 of the condenser. These cylinders carry respectively the fixed coil 11 of the inductance and a reactance coil 9, which is connected in series with the other coils. The coils extend about halfway around the circumference of the cylinders, and may be duplicated on each cylinder.
Patent GB-1046217-A (GB)
Title: Improvements in or relating to dielectrics for electric cables
IPC: H01B3/00
Filed: 1964-06-10
Abstract: 1,046,217. Cable insulation. PIRELLI S.p.A. June 10, 1964 [Nov. 21, 1963], No. 24043/64. Heading H1A. Antistatic material is added to the impregnant and/or incorporated in the paper tapes of a layered power cable insulation so that the resistivity of the dielectric is in the range 10<SP>15</SP> to 10<SP>16</SP> ohm cm. measured after one minute at 20‹ C. at a potential gradient of 50 v/mm. Suitable antistatic materials are ionisable salts, such as alkali metal carbonates, alkyl phosphates partly modified by amines and metallic soaps (e.g. lead naphthenate) or materials having antistatic properties due to electronic conductivity, such as aniline black, polymers of polyacenequinones, derivatives of poly-vinylanthracene and blown bitumen.
Patent GB-240491-A (GB)
Title: Improvements relating to lubricant compressors
IPC: F16N3/12
Filed: 1925-09-28
Abstract: 240,491. Tecalemit, Ltd., (Assignees of Soc. Anon. des Etablissements TÚcalÚmit). Sept. 26, 1924, [Convention date]. Reciprocating - cylinder pumps; suction reservoirs.-A lubricator comprises a container 1 fitted with a low pressure piston 3 carrying a high pressure cylinder 6 which slides on a piston 8 when the container is pulled away from the delivery nipple 15. Lubricant enters the chamber 6 through porte 9 and isÀ forced through a valve 12 into the discharge tube 14 when the ports 9 are closed by the piston 8. A .spring 19 returns the piston 3 and cylinder 1. In another form, the cylinder 6 is formed in a cap closing the lower end of the container, and the piston 3 is free. Specification 215,024, [Class 102 (ii), Water &c. Raising &c.], is referred to.
Patent GB-487469-A (GB)
Title: Improvements in devices comprising high-pressure metal-vapour discharge tubes
IPC: H05B41/232
Filed: 1937-09-04
Abstract: 487,469. Discharge lamps. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Sept. 4, 1937, No. 24224. Convention date, Sept. 7, 1936. [Class 39 (i)] [Also in Group XXXV] A high-pressure metal-vapour lamp consists of a tube of quartz of internal diameter 5 mm. and external diameter 9 mm. Two incandescent electrodes 2, 18 rnm. apart consist of atungsten core coated with a mixture of barium and strontium oxide heated by the discharge. In addition to mercury the tube contains argon at 5 cm. pressure. The tube is surrounded by a glass bulb 7 cm. in diameter filled with nitrogen at 50 cm. pressure and is supplied with 50 cycle A.C. at 220v. in series with capacity 6 and inductance 7.
Patent GB-665531-A (GB)
Title: Improvements in or relating to ophthalmoscopes and like instruments for inspecting the fundus of the eye
Inventor: KEELER CHARLES HENRY
IPC: A61B3/12
Filed: 1949-09-21
Abstract: 665,531. Sight-testing apparatus. KEELER OPTICAL PRODUCTS, Ltd., and KEELER, C. H. Sept. 21, 1950 [Sept. 21, 1949], No. 24275/49. Class 97 (i). In a hand opthalmascope comprising a handle carrying a source of light throwing a beam on to a mirror which deflects it into the patient's eye, some of the light reflected by the fundus of which is transmitted by or past the mirror to the observer's eye, an objective is provided fixed so that its back focal point is disposed upon the mirror, and a graticule is movable between the light source and the objective whereby an image of the graticule is focused upon the fundus of the patient's eye. As shown in Fig. 5, the arrangement is such that the movable graticule 40 is illuminated by parallel light 47 from a light source 13 and condenser 14 and an image of the graticule is formed on the retina 52 of the patient's eye by an objective 44, a mirror 18 and the lens of the patient's eye, the image being observed through an aperture in the mirror 18. The rear focal point of the objective 44, at which an image of the source 13 is focused, is located on the mirror 18 and coincides with the front focal point of the eye 51. The embodiment shown in Fig. 2 comprises a. tube 22 carrying the source 13 and also supporting a housing member 23 carrying the condenser 14 and slidably supporting a tube 27 having a. graticule 37 fixed to the upper end thereof. The tube slides in guides fixed to a member 15 carried by the housing which member supports the objective 44 and a housing 17 carrying the mirror 18. An aperture 16 in the member 15 permits viewing of the patient's eye and a system of lenses, not shown, may be moved before the aperture 16 by a knob 21. A second graticule 40 is carried by a cylindrical member 38 removably carried by the upper end of the tube 27 to permit of substitution of the graticules. The tube 27 is moved by a knob 31 sliding in a slot 32 in the tube 22 and carries a transparent scale 60 illuminated indirectly by the lamp 13 and viewed through a tube 62 against an index on a plate 65. The scale 60 is calibrated to give the power of spectacle lens necessary to correct the patient's vision when the graticule has been adjusted to bring its image focus on the retina. Specification 333,925, [Class 97 (i)], is referred to.
Patent GB-1153399-A (GB)
Title: Improvements in or relating to Cranes, Hoists or like LoadLifting Devices.
Inventor: FISCHER HERBERT
IPC: B66D1/26
Filed: 1967-05-25
Abstract: 1,153,399. Controlling winches. WELL. MAN MACHINES Ltd. 21 May, 1968 [25 May, 1967], No. 24300/67. Heading B8B. A hoist including four winding drums 11, 12, 13, 14 driven by two motors 15, 16 comprises a differential gear device 17 interposed between the drums and the motors whereby the relative rotation speeds thereof are consolidated normally to produce zero speed of an output shaft of the device 17, a switch being associated with the output shaft to cause application of drum brakes if the shaft does rotate due to a failure in the drive system. The drums 11, 12, 13, 14 are driven synchronously by the motors 15, 16 through gearing 18, 19, 20, 21, 22 and transmissions 24, 28 and 32, 36 from the drums 11, 14 and the motors 15, 16 are coupled to respective differential units of a pair within the device 17. The outputs from the said pair of units are taken from the pinion carriages thereof and mesh with a pair of input gears of a further differential unit having the output shaft secured to the pinion carriages thereof. The motors may or may not rotate synchronously. The device 17 which may be used in conjunction with various numbers of motors and drums may have the differential units replaced by epicyclic units.
Patent GB-169886-A (GB)
Title: Improvements in and relating to locks
IPC: E05B35/10
Filed: 1920-08-21
Abstract: 169,886. Cooper, S., and Kaye, J. V. Aug. 21, 1920. Lock mechanism, master-key; padlocks. -In locks employing two keyholes and two keys, the bolt is operated by a runner plate R which is actuated bv either of the keys and locked bv a lever mechanism. The kevholes are positioned side by side, one for the master key and one for the servant's key. Fig. 1 shows the device applied to a padlock. The servant's key lifts the double-gated levers L directly, allowing a stud R' on the plate R to pass from one gate to the other when the key slides the plate. The master-key operates the ungated levers M, the ends M<x> of which lift the noses Lx of the gated levers L to position these correctly for the operation of the plate R, a projection R' on which engages a shoulder B' on the bolt B to withdraw it. The plate R may be moved in the reverse direction by the master-key to bring its, projection R<1> behind a second shoulder B' on the bolt, blocking the bolt and rendering the servant key inoperative. Specification 100,985 is referred to.
Patent GB-304161-A (GB)
Title: An improved non-refillable bottle
IPC: B65D49/06
Filed: 1927-09-15
Abstract: 304,161. Le Sueur, F. H. Sept. 15, 1937. Bottles, non-refillable.-A device for a non- refillable bottle comprises a sleeve g, apertured at j and having a sleeve valve m sliding thereon and adapted to uncover the aperture when the bottle is inverted. The top of the sleeve is normally closed by a flap valve 12 held in place by a ball 13. The motion of the ball is limited by a projection v on a baffle device s. To fix the sleeve in place, the bottle neck is divided into two parts, held together by a spun metal band z, which may be embossed &c. The parts of the device may be sufficiently opaque to increase the difficulty of tampering.
Patent GB-667169-A (GB)
Title: Improvements in air-heating units
Inventor: BIGGART ROBERT JAMES CARRICK
IPC: F24H3/08
Filed: 1948-09-16
Abstract: 667,169. Air - heating stoves. LEITH CARDLE & CO., Ltd. Sept. 23, 1949 [Sept. 16, 1948], No. 24333/48. Class 64(i) An air heater comprises a stove 10 enclosed by an air jacket 17 for heating air for combustion in the stove, and a heat - exchanger comprising vertical tubes 31 of elongated cross - section through which flow the combustion products from the stove and around which air to be heated and supplied to a building is forced through a surrounding casing 21, e.g. by a fan. The air jacket 17 is open at the top, and air enters the ash-pit through side openings controlled by thermostatically operated lightalloy dampers 15 linked and hung on fine wire. A U-shaped boiler 16 is provided.
Patent GB-760121-A (GB)
Title: Bis-decyl and bis-tridecyl esters of sulfosuccinic acid and preparation thereof
IPC: C07C309/17
Filed: 1953-09-03
Abstract: The invention comprises bis-esters of sulphosuccinic acid, of the general formula <FORM:0760121/IV(b)/1> wherein Me represents an alkali metal or ammonium and R the radical of a primary alcohol having 10-19 (preferably 10-13) carbon atoms in the molecule and having the formula <FORM:0760121/IV(b)/2> wherein one X represents -CH2OH and the other hydrogen, R2 represents hydrogen or methyl, and n is whole number from 1-4 inclusive, and the preparation thereof by esterifying the appropriate alcohol with maleic acid or anhydride or fumaric acid (preferably at 60-190 DEG  C. in the presence of an acidic catalyst), and sulphonating the resulting bis-ester with an alkali metal or ammonium bisulphite (preferably at 50-120 DEG  C.). Suitable alcohols are distillation fractions of the products obtained by the oxo process from polypropylenes, polybutylenes and propylene-butylene copolymers.  Suitable sulphonating agents are sodium and ammonium bisulphite or metabisulphite.  In examples: (1) a C13 alcohol fraction is refluxed with maleic anhydride in toluene in the presence of p-toluenesulphonic acid and the product is refluxed with sodium metabisulphite in aqueous ethanol; (2) a slightly different C13 alcohol fraction is similarly treated, except that concentrated sulphuric acid is used as the esterification catalyst; (3) a C10 alcohol fraction is treated as in (2).  Specification 446,568, [Group IV], is referred to.ALSO:Detergent compositions comprises one or more sulphosuccinic esters of the formula <FORM:0760121/III/1> (wherein Me represents an alkali metal or ammonium and R the radical of a primary alcohol having 10-19 (preferably 10-13) carbon atoms in the molecule and having the formula <FORM:0760121/III/2> wherein one X represents -CH2OH and the other hydrogen, R2 represents hydrogen or methyl, and n is a whole number from 1-4 inclusive) in admixture with one or more alkali metal or ammonium benzoates.  The amount of benzoate is preferably 5-50 per cent of the weight of sulphosuccinate, and the compositions may also contain other ingredients such as sodium phosphate, soap, other detergents and inorganic fillers.  The compositions may be prepared by mixing the ingredients in the presence of water or an aqueous organic solvent (e.g. an aqueous alcohol) and evaporating to dryness, e.g. in a tray-drier or on a revolving drum from which the solid material may be scraped off in thin flakes.  In an example, an aqueous solution of sodium bis-tridecyl sulphosuccinate and sodium benzoate is spray dried by atomizing it in a rising vortex of hot air or hot products of combustion at 600-700 DEG F.  Specification 446,568 is referred to.
Patent GB-885489-A (GB)
Title: Improvements in rocket motors
IPC: F02K9/76
Filed: 1959-07-16
Abstract: 885,489. Deflecting propulsive gases. GENERAL ELECTRIC CO. July 16, 1959 [July 21, 1958], No. 24462/59. Class 4. [Also in Group XXVI] A rocket motor comprising a plurality of peripherally spaced combustion chambers 11 arranged around a single plug 12 so that the combustion gases are deflected into a single jet, has means 18 for controlling the fuel supply to the individual combustion chambers so as to change the direction of the thrust.
Patent GB-479014-A (GB)
Title: A process for the production of metallic tiatnium
IPC: C22B34/12
Filed: 1937-09-08
Abstract: In a method of obtaining titanium from titanium chloride, a bath consisting of fused alkali halide or alkaline earth halide or both, particularly potassium chloride, is covered with a layer of molten alkali metal and maintained at a high temperature, which may be 700-900 DEG  C., and titanium chloride, preferably tetrachloride, is added, for example by introducing it in vapour form into the fused salt bath.  The operation may be carried out in an inert atmosphere such as hydrogen.
Patent GB-871180-A (GB)
Title: Method of production of pigment presscakes
IPC: C09B67/20
Filed: 1959-07-16
Abstract: A pigment presscake of high pigment content is produced by suspending the pigment in water, adding thereto a solution containing not more than 2%, based on the dry weight of pigment, of a methyl cellulose or methyl starch, the said methyl cellulose or methyl starch being soluble in cold water and insoluble in hot water, heating the dispersion so obtained to at least the temperature at which flocculation occurs and separating the pigment from the mother liquors while still hot.  Suitable additives are methyl cellulose having two methoxy groups per anhydro glucose unit, the methyl starch having one methoxy group per anhydro glucose unit.  Examples relate to azo and phthalocyanine dyestuff pigments.  Inorganic pigments such as titanium dioxide and iron oxide, metallized pigments and vat dyestuffs may also be used.  Specification 653,772 is referred to.ALSO:Hot pigment suspension is filtered through a filter press preheated by boiling water or steam to more than 70 DEG C.  The press cake may be washed with water at 80 to 100 DEG C.  Specification 653,772 is referred to.
Patent GB-908944-A (GB)
Title: Improvements relating to combat vehicles
Inventor: BERGE SVEN ERIK
IPC: F41A23/34
Filed: 1961-07-06
Abstract: 908,944. Combat vehicles. BOFORS A.B. July 6, 1961, No. 24542/61. Class 92. In a combat vehicle, e.g. a tank or selfpropelled gun, but particularly those in which the gun is aimed by aiming the whole body of the vehicle, a beam 3, Fig. 1, is fixed to the body 2 and is so arranged as to protect the gun 1 against impact with the ground. In an alternative arrangement, the beam is in the form of a tube encircling the gun to form additionally an armour protection. As shown in Fig. 2, a curved shield 4 is mounted at the end of the beam 3 and has an aperture 6 for passage of projectiles. The shield 4 protects the gun nozzle against impact with the ground and deflects the major part of the powder gases upwardly, thus reducing the amount of dust raised from the ground. The gases exert a reaction force on the shield 4 in a forward and downward direction 8 and produces a torque on the vehicle body in opposition to that applied by the recoil force of the gun in the direction 9 so that the recoil movement of the body is reduced.
Patent GB-331416-A (GB)
Title: Improvements relating to mattresses for bedsteads
IPC: A47C23/28
Filed: 1929-04-23
Abstract: 331,416. Austin, B. April 23, 1929. Divided on 327,869. Mattresses, - Bentmetal clips 6 are used to secure the draw-bar 4 of an adjustably tensioned mattress to the supporting frame 2, the clips being threaded on the tension bolts 3 and hooked around the frame bar. Modified forms are described, one of U-shape with the bolt passing through both limbs and another of inverted L-shape with the bolt located below the frame bar.
Patent GB-901380-A (GB)
Title: Plasticisers
Inventor: GAZZARD EDWARD GEORGE
IPC: C08F18/04
Filed: 1960-07-14
Abstract: Plasticized compositions comprise vinyl ester polymers and oxypropylene polymers containing the repeating unit -CH(CH3)CH2O- in major amount, more than two such units being present, and having a cloud point when dissolved in water of 40 DEG C. or higher.  The vinyl ester polymer comprises a major proportion of units of vinyl esters of aliphatic carboxylic acids having up to six carbon atoms, e.g. vinyl acetate and/or vinyl propionate, and optionally minor amounts of comonomers, e.g. alkyl acrylates, alkyl methacrylates, vinyl 2-ethyl hexoate, maleic esters, fumaric esters and polymerizable acids and amides. The oxypropylene polymer may be polyoxypropylene glycol, oxypropylated trimethylol propane or oxypropylated glycerol.  The compositions may be prepared by dissolving the oxypropylene polymers in the vinyl ester monomer and polymerizing the monomers.  Polymerization may be effected in aqueous emulsion in the presence of ammonium persulphate, hydrolysed polyvinyl acetate, starch ether, hydroxyethyl cellulose and carboxymethyl cellulose.  The products may be admixed with fillers, pigments and thickeners and used in the manufacture of emulsion paints. Specifications 779,557, 829,149, 870,287 and 901,379 are referred to.