baber/WOPTO huggingface dataset:
Patent GB-657273-A (GB)
Title: Method of printing with sulfuric acid esters of leuco vat dyes of the anthraquinone series
Filed: 1949-02-03
Abstract: Textile fabrics are printed with a paste having as essential ingredients a sulphuric acid ester of a leuco vat dye of the anthraquinone series, a thickener, an oxidizing agent, an oxidation catalyst and an aldehyde bisulphite, an aldehyde sulphoxylate or an alkali metal salt of such aldehyde compounds, and the dyeing is developed by steaming for about five minutes. The aldehyde compound inhibits the development of the dye during the first 1 to 3 minutes, thereby enabling the soluble dye to penetrate the fibre.  In examples: (1) to (3) rayon or cotton is printed with a composition comprising the sulphuric acid ester of leuco Jade Green or dibromo Jade Green, urea, thiodiglycol, starch tragacanth paste, sodium carbonate, sodium bromate, Rongalite C and ammonium vanadate, and then steamed for five minutes; (4) rayon is printed with a paste comprising the sulphuric acid ester of leuco Jade Green, thiodiglycol, starch tragacanth paste, glyoxal bisulphite, ammonia, sodium chlorate and ammonium vanadate, and steamed for five minutes; and (5) the first example is repeated using sodium acetaldehyde bisulphite instead of Rongalite C.
Patent GB-790552-A (GB)
Title: Improvements in household appliances for the preparation of hot beverages
IPC: A47J31/057
Filed: 1955-02-02
Abstract: 790,552. Beverage making appliances. BRANDL, W. Feb. 2,1955 [Feb. 5, 1954], No. 3092/55. Class 129. [Also in Group XI] Tea, coffee and the like are prepared in an appliance comprising a pedestal supporting a cold water container 3 whose lower part is connected by a pipe 4 with an electric flow heater 5 whose other end is connected to a riser pipe 6 which delivers hot water through a conduit 8 to an infusing receptacle 2 mounted on the pedestal, the current feed to the heater being controlled by a membrane 13 subject to the pressure of the cold water in the container so that the heater is energized causing the water to pass through the riser pipe to the infuser when the container is filled and de-energized when the container has emptied. The upper orifice of tube 6 is above the highest water level in container 3 and leads to a rotatable cup 7 with a spout 8 adjustable to deliver hot water to a scalding vessel 9 inserted in the beverage container 2. A branch 4<1> of pipe 4 connects container 3 with membrane 13 which acts on a pivoted counterweighted mercury switch cradle 15. The beverage in container 2 is kept warm by a heater 21. Conductors 17, 18 carry current to terminals 19, 20 and thence to high and low wattage heaters 5 and 21, the circuit to heater 5 including the mercury switch. In operation, tea leaves or coffee grounds are placed in vessel 9 and water is placed in container 3 so that heater 5 is energized. The water is heated and rises in tube 6 and overflows through spout 8 to scalding vessel 9, the beverage dripping through into container 2.
Patent GB-588230-A (GB)
Title: Improvements in or relating to shearing and cutting-off apparatus
IPC: B23D21/00
Filed: 1945-02-07
Abstract: 588,230. Cutting profile bars. METAL TRIM, Ltd., and PENKALA, E. Feb. 7, 1945, No. 3103. [Class 83 (iv)] A shearing sub-press apparatus for profiled bars comprises 'fixed and pivoted apertured cutters, the latter being mounted on an axis offset relatively to the section. The pivoted cutter 12 is secured in a holder 20 mounted on an adjustable eccentric hinge pin 15 and is actuated against an adjustable return spring 45 by pressure on a pad 36 through member 40 and roller 42. A screw 52 adjusts the position of the holder.
Patent GB-113816-A (GB)
Title: Improvements relating to the Application of Coatings or the like to Bars, Rods, Pipes and so forth.
Inventor: COLE WILLIAM LAWES
IPC: B05C3/12
Filed: 1917-03-02
Abstract: 113,816. Cole, W. L. March 2, 1917. Coating - machines. - In applying coatings of paint, varnish, &c. to rods, wires, tubes, laths, &c. or in impregnating ropes &c., the articles f are passed through a fitting e having suitably shaped entrance and exit orifices, and supplied continuously with coating- material by a pipe d, the coating-material being withdrawn through a pipe g by a pump which tends to withdraw it at a quicker rate than it is supplied, so that air is drawn in through the entrance and exit orifices and escape of coating- material is prevented. The material may be supplied to the pipe d by a pump or by gravity. Coatings which react chemically upon the articles may be applied. Rods or wires for making welding-electrodes may be coated with sodium silicate
Patent GB-665209-A (GB)
Title: Heat cast refractory material and process for making the same
IPC: C04B35/44
Filed: 1949-02-04
Abstract: 665,209. Refractory compositions. CORHART REFRACTORIES CO. Feb. 4, 1949 [Feb. 11, 1948], No. 3150/49. Class 22 A refractory comprises, by weight, 12-50 per cent chromic oxide, 5-25 per cent aluminium oxide, 25-78 per cent magnesia, over 5 up to 25 per cent ferrous oxide and exists as at least 15 per cent of a crystalline solid solution of ferrous oxide in magnesia, a spinel phase consisting of the above oxides and a small amount of a siliceous matrix. The silica is less than 5 per cent by weight, and calcium oxide, when present, is less than 10 per cent by weight. As raw materials commercial chrome ore and calcined magnesite are used, the silica being present in the chrome ore and it may even form forsterite. Specification 621.736 is referred to.
Patent GB-752572-A (GB)
Title: Improvements in the production of styrene copolymers
IPC: C08F12/12
Filed: 1954-02-03
Abstract: Transparent copolymers of styrene and a -methyl styrene stable to boiling water are prepared in the presence of an inert gas, if desired at reduced pressure, using a mixture of peroxidic catalysts of different temperature optima, and the copolymers are after-treated to remove low molecular weight constituents.  Bulk or emulsion methods may be used.  In examples the catalyst comprises a mixture of benzoyl and di-t.-butyl peroxides and polymerization is carried out under nitrogen and reduced pressure at 60 DEG  to 180 DEG  C.  The copolymer is ground and heated under vacuum for 30 hours at 120-130 DEG  C. to yield a clear product having a softening-point of 105 DEG C.
Patent GB-1364936-A (GB)
Title: Carrying case for sewing machines
IPC: D05B77/00
Filed: 1972-01-24
Abstract: 1364936 Sewing machine cases SINGER CO 24 Jan 1972 [28 Jan 1971] 3206/72 Heading A4B A carrying case for a sewing machine 14 comprises a downwardly open cover 11 secured by clasps 13 to a base 12, a horizontal partition 22 inter-connecting the side walls 20 of the cover 11 to define an upwardly open accessory compartment 23 which receives a tray 40, non- circular projections 30, 31 projecting upwardly from the partition 22, and a detachable lid 50 with a central depression 51 having an aperture 52 to snugly receive the projections 31 to locate the lid 50 on the cover 11. The projections 31 extend to a carrying handle 32. The lid 50 includes locating lugs 70, 60 and hook formations 61 by which the lid 50 may be hung over the upper edge of a partition side 20 when removed from the cover 11.
Patent GB-866935-A (GB)
Title: Improvements in or relating to pressure exchangers
IPC: F04F13/00
Filed: 1958-01-31
Abstract: 866,935. Pressure exchangers. SPALDING, D. B. Jan. 30, 1959 [Jan. 31, 1958], No. 3244/58. Class 8(1). Rotor cell walls 4 extending between a hub 1 and a shroud 2 have a lowered cross-section in any plane normal to the rotor axis and the median line of any bowed cross-section of each wall, subtends a chord which is normal to a tangent at the point of intersection of the chord and the inner periphery of the shroud 2. The walls may be mounted in slots in the shroud and hub and may be pre-stressed by rotating the hub relative to the shroud before securing the hub and shroud, the faces of the walls may be of different curvature and the walls may be hollow with an internal spacer or be fabricated from tubes. The walls may be internally cooled.
Patent GB-1120917-A (GB)
Title: Improvements in or relating to blast nozzle frames in gas filters
Inventor: SAUERMANN WERNER
IPC: B01D46/04
Filed: 1967-01-23
Abstract: 1,120,917. Gas filter. STANDARD FILTERBAU-G.m.b.H. 23 Jan., 1967, No. 3263/67. Heading B1T. In a gas filter comprising vertical, openended tubular filter elements, enclosed in a filtrate chamber and whose interiors receive dirty gas from upper chamber 2, the elements are enclosed by cleaning gas delivery nozzles incorporated in a vertically reciprocating frame 5, the frame having long guide tubes 4 sliding on guide rods 1 which are accommodated in tunnels 3, extending into chamber 2, so that the frame can travel right up to the top of the filtrate chamber. Tubes 4 extend upwards from frame 5 and carry rollers or sliding bushes 6 which engage rods 1, which are of quadrangular section. Compressed air is delivered to frame 5 through a bellows 7 or a telescopic tube arrangement, which encloses the cable 12 by which the frame is reciprocated. Bellows 7 has spaced internal wheel-like structures, linked by chains 20 and sliding on cable 12 to limit stretching and lateral movement of the bellows. Telescopic tube 13 surrounds and protects bellows 7, and further air supplied by inlet 14 between the tube and bellows excludes the dust therefrom. If the filter has a downstream extractor, inlet 14 is simply open to atmosphere.
Patent GB-1460402-A (GB)
Title: Method of reclaiming nickel values from a ferro-nickel alloy
IPC: C22B3/02
Filed: 1975-01-24
Abstract: 1460402 Reclaiming nickel values IMETAL 24 Jan 1975 [5 Feb 1974] 3290/75 Heading C1A Ferro-nickel alloy is subjected to nitric acid lixiviation and nickel values are recovered from the resulting nickel nitrate solution. The nitric lixiviation is preferably performed at between 80 and 100 C. in the presence of oxygen, using aqueous nitric acid of from 1-4 N, and the alloy is preferably in granule form with an average size of about 1 mm. Concentrated nickel nitrate solutions with greater than 100 gl<SP>-1</SP> of nickel and the ratio of Fe/Ni less than 1/100 are obtained with at least 99À6% yield. The nitrous vapours may be recovered and converted to nitric acid for lixiviation of fresh alloy. The nickel is preferably recovered from the nickel nitrate solution by an initial purification step (e.g. liquid-liquid exchange or cationic solvent treatment) to eliminate metallic impurities, followed either by direct pyrohydrolysis or by crystallization of nickel nitrate hexahydrate and pyrolysis. The resulting nickel oxide may be sintered or may be reduced to form hard nickel which can be converted to pure nickel by electrorefining or it may be dissolved in HCl to give nickel chloride which is subsequently purified and electrolysed to give highly pure nickel.
Patent GB-1078151-A (GB)
Title: Production of ªÏ-chlorocarboxylic acids
Inventor: HAWKINS EDWIN GEORGE EDWARD
IPC: C07C51/285
Filed: 1965-01-26
Abstract: o -Chlorocarboxylic acids are prepared by mixing a cyclic monoketone, in which the keto-group is in a carboxylic ring, with H2O2 in a molar ratio greater than 1:1 and adding the resulting product to a solution of a metal ion reducing agent containing chloride ions and free from any substantial quantity of added ferric ion.  The metal ion reducing agent is an ion of a metal of variable valency which is in its lower, or one of its lower, valency states.  6-Chlorocaproic acid may be reacted with ammonia to give caprolactam, or with KCN to give 6-cyanocaproic acid which may then be reduced to produce oenantholactam.
Patent GB-901362-A (GB)
Title: Improvements in or relating to electrical connection devices
IPC: H01R31/00
Filed: 1961-01-30
Abstract: 901,362. Two-part couplings. VOLKSWAGENWERK A.G. Jan. 30, 1961 [Feb. 23, 1960], No. 3379/61. Class 38 (1). A multi-lead adaptor 2 comprises a push-on connector portion for engaging a fixed lug 1 and forming the adaptor body and at least two lugs 3, 4 extending at an angle from the body and capable of being engaged by push-on connectors such as 7. Holes 6 in the lugs are engaged by portions 5 projecting from the bodies of the push-on connectors. Slots 8 in the adaptor body serve to clean the lug and make the connection resilient. Lugs 3, 4 may be integral with the push-on connector part of adaptor 2 or may be attached, e.g. by soldering.
Patent GB-689072-A (GB)
Title: Improvements in or relating to fountain pens
IPC: B43K5/02
Filed: 1951-02-13
Abstract: 689,072. Reservoir pens. SCRIPTO, Inc. Feb. 13, 1951. [Feb. 14, 1950] No. 3462/51. Class 146 (iii). A fountain pen is provided with a body of absorbent material retained in the reservoir so as to retain a reserve supply of ink for use after depletion of free ink in the reservoir, means being provided to compress the absorbent material to render the reserve supply of ink available. A collapsable sac 36 is collapsed by a presser plate 38 actuated by a lever.39 pivoted on a ring 40 located in a groove 42. A body 46 of sponge rubber is secured within the sac 36 by adhesive at an intermediate or end position of the sac, such that by actuation of the lever 39, ink will be pressed from the body. Instead of sponge rubber, a wad of glass wool may be retained in the closed end of the sac. Capillary slots 22, provided within a liner 20 for a cap 18, serve to accommodate ink escaping from the reservoir due to increases in temperature or pressure of air within the sac; the interior of the cap being vented by holes 29 and 28 in the liner and cap respectively. The cap 18 is retained on the pen barrel by a ring 15 located within a groove in the barrel. The ring 15 comprises two turns of wire formed with a deflection, such that the turns are substantially parallel.
Patent GB-1114875-A (GB)
Title: Composite impact and abrasion resistant plate
IPC: B32B15/01
Filed: 1966-01-26
Abstract: 1,114,875. Brazing. CANADA IRON FOUNDRIES Ltd. 26 Jan., 1966 [3 Feb., 1965], No. 3509/66. Heading B3R. A cast plate of hard material, highly resistant to abrasion, and consisting of a martensiticaustenitic matrix containing any of the carbides of iron, chromium, molybdenum, tungsten, vanadium and titanium in finely dispersed form, is vacuum-brazed using a copper alloy brazing material to a backing layer of a ductile, machinable and weldable ferrous material. The abrasion resistant layer which is from 3 to 15 times the thickness of the backing layer can be fixed by means of the latter, e.g. by studs welded thereto in position, e.g. in machinery in which a wear resistant lining or component is required.
Patent GB-111780-A (GB)
Title: Improvements in or relating to Automatic Pistols and Supports therefor for use in Trench Warfare.
Inventor: COOKE CHARLES JOHN
IPC: F41A23/00
Filed: 1917-03-09
Abstract: 111,780. Cooke, C. J. March 9, 1917. Stocks; attaching bayonets to guns; aiming-rests. - Consists in providing an automatie pistol with a support or auxiliary stock formed with a magazine channel communicating directly with the magazine recess in the handle of the pistol. At the bottom of the support is mounted a bayonet. In the construction shown in Figs. 1 and 4, the support comprises a wooden bar formed with a longidinal channel, shown in cross-section in Fig. 4, for receiving a number of cartridge magazines 5 which are held in place by spring grip pieces 6. Near the top of the channel is a spring trip lever 9 which ejects the empty magazine in a forward direction when it falls from the pistol. The support is removably clamped to the bottom of the pistol handle. A bayonet 7 is secured at the bottom by the ordinary fastening. Specification 102,410 is referred to.
Patent GB-465872-A (GB)
Title: Improvements in and relating to electric welding converter machines
IPC: H02K47/04
Filed: 1937-02-05
Abstract: 465,872. Motor generators; casings. SIEMENS-SCHUCKERTWERKE AKT.-GES. Feb. 5, 1937, No. 3530. Convention date, Feb. 5, 1936. [Class 35] [Also in Group XXVIII] A motor-generator for use in electric welding comprises a motor and a generator. The rotors 1, 2 of which are mounted on a shaft 12 in a casing 3 which also serves as a drum for carrying the current supply cable 4 and the welding leads 5. The slip rings 10 or commutator of the motor and the commutator 20 of the generator are arranged between the rotors and access to them is given by openings 30 in the casing, preferably fitted with removable covers.
Patent GB-1005280-A (GB)
Title: Electron beam microwave amplifier
IPC: H01J25/49
Filed: 1963-01-29
Abstract: 1,005,280. Electron-beam parametric amplifiers. DIRECTOR OF FORSVARETS FORSKNINGS INSTITUTT. Jan. 29, 1963 [March 26, 1962], No. 3602/63. Drawings to Specification. Heading H1D. In a parametric amplifier having a D.C- pumped amplifier structure and an axia magnetic field, the direction of the magnetic field is reversed between the input coupler and the amplifying structure and again between the amplifying structure and the output coupler so that in operation a fast cyclotron wave is coupled on the beam by the input signal and is converted to a synchronous wave which is amplified in the amplifying structure, the resulting synchronous wave being reconverted to a fast cyclotron wave which delivers an output to the output coupler.
Patent GB-104709-A (GB)
Title: Improvements in Apparatus for Providing Hot Water in the Lavatories of Railway Carriages.
Inventor: GONSOULAND HENRY PHILLIP
IPC: B61D35/00
Filed: 1916-03-10
Abstract: 104,709. Gonsouland, H. P. March 10, 1916. Valve-discharge water-waste preventers, automatic.-Apparatus for providing hot water in the lavatory of a railway carriage or the like comprises a steam-heated water-heater 4 having a hotwater outlet pipe 13 discharging into the closet pan 14. When the water-level in the waterheater rises above a certain height, a float 9 closes the inlet valve 17 and opens the discharge valve 16. When the closet pan is flushed by opening the valve 28, the water-level in the heater falls, and the valve 16 is closed.
Patent GB-518704-A (GB)
Title: Improvements in and relating to the production of emulsions and of flexible films
IPC: C08F20/12
Filed: 1938-09-02
Abstract: 518,704. Vinyl polymerization products. RENFREW, A., GATES, W. E. F.,and IMPERIAL CHEMICALINDUSTRIES, Ltd. Sept. 2, 1938, No. 3676/39. Divided out of 50] ,810. [Class 2 (iii)] Emulsions, from which continuous films are obtainable by evaporation, are obtained by subjecting an aqueous emulsion containing one or more monomeric esters of methacrylic acid, the molecular weight or average molecular weight of the alcohol radicle or radicles of which lies between 20 and 80, to polymerizing conditions, i.e., to the action of heat, light, or polymerizing catalysts, or two or more of these agencies, with the introduction before, during or after polymerization of a proportion of plasticizer between 80 per cent. and a minimum lying between 27 and 1 per cent. and varying with the molecular weight or the average molecular weight of the alcohol radicle or radicles substantially in accordance with the ccrve A.F shown on the drawing, the percentages being calculated upon the combined weights of the polymerized ester or esters and the plasticizer. A certain minimum proportion of plasticizer is required to give flexible films by evaporation of the emulsion and the points A to F on the curve correspond to experimental determinations of the minimum amounts of plasticizer in the case of methyl, ethyl, propyl, butyl, amyl and hexyl methacrylates. Suitable plasticizers are dibutyl phthalate, tricresyl phosphate, triphenyl phosphate and cellulose ester lacquer plasticizers. Emulsifying agents may be present, and the emulsion may be thickened by the addition of sodium alginate, a water-soluble cellulose ether, or gum tragacanth. A small amount of a water-miscible solvent, e.g., methyl alcohol, may be added to the ester before polymerization. The emulsions may be used also for treating and binding textiles, dressing leather, paper or wood, coating metal, or in the preparation of water paints. In examples, an aqueous emulsion of (1) and (6) tricresyl phosphate and ethylmethacrylate with or without propyl methacrylate, and (2) to (4) dibutyl phthalate and propyl, butyl or amyl methacrylate, is heated in the presence of ammonium persulphate, and (5) dibutyl phthalate and butylmethacrylate is heated in the presence of benzoyl peroxide. Specifications 358,534, 411,860, 437,446, and 501,810 are referred to.
Patent GB-556166-A (GB)
Title: Improved electrolytic process for the production of quinone and hydroquinone
IPC: C25B3/23
Filed: 1942-03-20
Abstract: 556,166. Manufacture of quinone and hydroquinone. HORROBIN, S., NEW, R. G. A., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. March 20, 1942, No. 3706. [Class 41] Hydroquinone is prepared by the reduction of p-benzoquinone obtained by the anodic oxidation of a solution of benzene in dilute sulphuric acid, the oxidized electrolyte being withdrawn from the cell and the p-benzoquinone extracted therefrom by fresh benzene, the quinone in solution being reduced to hydroquinone, for instance by means of iron and acid as described in Specification 430,572. Lead or lead alloy electrodes are employed in the cell, sheets of cloth being disposed close to the cathodes, which are perforated to facilitate the escape of hydrogen. The anodes are " formed" in dilute H 2 SO 4  solution by the passage of a current first with them positive, then reversed for an hour when the voltage rises, and finally with them positive for a further hour, this operation affording an active coating of lead peroxide on the anodes. In the electrolytic operation proper, a 10 per cent solution of H 2 SO 4  containing dissolved benzene is circulated through the cell at a temperature of 25- 30 C., down a glass column packed with porcelain rings up which benzene from a reservoir rises, and back to the cell. A current of 40 ampÞres is used, corresponding to an anode current density of 2.4 amperes per square decimetre.
Patent GB-1028785-A (GB)
Title: An electric switch
IPC: H01H1/38
Filed: 1965-01-27
Abstract: 1,028,785. Liquid blast switches. SIEMENSSCHUCKERTWERKE A.G. Jan. 27, 1965 [April 24, 1964], No. 3714/65. Addition to 1,018,169. Heading H2B. The liquid blast switch of the parent Specification is modified by the provision of a partition 36 dividing the chamber 19 into two portions interconnected only by a bore through which the moving contact rod 7 extends in the contacts closed position. Since the bore is substantially closed by the contact 7 during most of opening movement, arc gases &c. are prevented from entering the lower portion of the chamber and therefore, when the tip of the contact is withdrawn into this lower portion at the end of its movement it is surrounded by clean oil of high dielectric strength. The partition 36 is thicker at its periphery for strength and its shape is thus such as to assist the flow of oil into the channel 25.