baber/WOPTO huggingface dataset:
Patent GB-483776-A (GB)
Title: Improvements in or relating to the production of coloured effects on aluminium and aluminium alloys
IPC: C25D11/24
Filed: 1937-03-12
Abstract: 483,776. Colouring aluminium; printing processes. SHEPPARD, S. R. March 12, 1937, No. 7322. [Class 93] [Also in Group XVI] Multi - coloured designs are produced on aluminium or aluminium alloys provided with an oxide film, e.g. by anodic treatment, by colouring the whole or a part of the oxidecoated article, coating that part of the coloured surface which is to retain the colour with a resist, e.g. by means of a brush, by offset printing, or by means of a stencil screen, removing the colour from the unprotected surface, and recolouring the unprotected surface in another colour. The exposed colour may be destroyed by immersing the article in sulphuric acid or in a reducing-agent such as titanous chloride or sulphate. The resist may be (1) a solution of an acid-resisting varnish of melting point above 100‹ C., such as solutions of celluloid or "Bakelite" (Registered Trade Mark) in non-greasy volatile solvents such as amyl or butyl acetates ; (2) a dispersion of inert oxides in drying oil, with driers; or (3) a dispersion of pigments insoluble in aqueous solutions, such as carbon, in heavy oils of high viscosity at temperatures up to 100‹ C., thinners such as benzole or toluol being added. After applying the resist, the oxide film may be revitalized by treatment with sulphuric or nitric acid. Parts of the original surface may be protected from oxidation, and, after colouring the unprotected parts, the resist may be removed and the aluminium surface matted by a scratch brush or by scouring, the coloured part then protected, and the metal oxidized and coloured or left uncoloured. The resist in this case may be a dispersion of an oil-soluble pigment, such as Brunswick black, in a drying oil and turpentine. In a particular example for producing effects in silver, pink, gold, green, and crimson on a black background, an aluminium plate is buffed and cleaned in boiling caustic soda solution, an anodic film is produced in a bath of glycerine and sulphuric acid as described in Specification 359,494, [Group XXXVI], the parts to remain silver are coated with a resist such as a cellulose varnish or lithographic ink, the whole unprotected part is dyed pink in a solution of Alizarine Red SW, the parts to remain pink are protected and the remaining pink is removed, and the process is repeated using, in succession, Benzo Fast Orange 2RL; Acid Blue 7218 and Quinoline Yellow; Chlorazol Fast Pink BKS; and Eriochrome Black ST with Gallazol Green Bluish FD powder. Specifications 439,403 and 445,242, [both in Group XVI], also are referred to.
Patent GB-740324-A (GB)
Title: Centrifugal separator
IPC: B04C7/00
Filed: 1954-03-12
Abstract: 740,324. Centrifugal separators. NATIONAL RESEARCH COUNCIL. March 12, 1954 [March 20, 1953], No. 7330/54. Class 23. A dust separator comprises a cylindrical body 10, a scroll chamber 11-forming an inlet to the bottom of the body, an opening 19 at the top end of the body discharging into a dust collecting chamber 20, a clean gas outlet 15 coaxial with the body, a dust collecting hopper 13 below the scroll chamber, and a narrow passage 24 of which part at least is an annulus having a greater radius than the body. The dust collectors 13, 20 are provided with valves 17, 22 for the discharge of the dust. In modifications a circular baffle which may be rotary is disposed between the outlet 19 and the top wall 27 of the chamber 20. The Specification gives proportions of the apparatus.
Patent GB-729299-A (GB)
Title: Improvements in and relating to insecticide spraying machines
IPC: A01M11/00
Filed: 1951-12-04
Abstract: The subject-matter of this Specification is substantially the same as that described in Specification 729,209 but the claims differ.
Patent GB-318938-A (GB)
Title: Improvements in or relating to variable-speed gears
IPC: F16H33/08
Filed: 1928-03-13
Abstract: 318,938. Barrington, T. B., and Sandberg, C. P. March 13, 1928. Variable-speed gearing comprises a freely-rotatable balanced member or wheel such as H, Figs. 1 and 2, which by means of a universal joint produces alternations of torque, which by a detent V<1> and ratchet V<2> produces continuous rotation in a driven shaft E which varies automatically with the load. The engine flywheel B carries freely in bearings an in clined shaft C with a cup-shaped end 0'. The cup C' has two pairs of gimbal bearings c1, c2, and c3, c,. The pair c3, c4 makes connection with the free flywheel H which supplies impulsive reactions, and the pair c1, c2 makes connection with a central shaft D to which alternating torques are imparted. The detent V<1> renders reverse impulses ineffective, while the ratchet V<2> transmits forward impulses to shaft E which are made into uniform motion by flywheel V'. In a modification as shown in Fig. 3, the impulsive torque driving flywheel H is supported on a crank C upon the flywheel B, such crank being parallel to the axis of the gearing. The double universal joint is shown at G1. In another modification, the flywheel H is supported on an inclined crank C in a manner similar to that shown in Fig. 6. Differential or balance gearing.-The alternating impulses produced by the flywheel H and universal joint 0, Fig. 6, may both be utilized by connecting the shaft D to which the impulses are imparted through two oppositely-acting ratchets V<1>, V<2> to two flywheels V, V<3> connected to nested shafts E<1>, E, which are thus differentially driven in a yielding or balanced manner.
Patent GB-676724-A (GB)
Title: Improvements relating to image-conversion apparatus comprising an optical system and an electron-optical system
IPC: H01J31/50
Filed: 1950-03-28
Abstract: 676,724. Image convertor tubes. NAAMLOOZE VENNOOTSCHAP. OPTISCHE INDUSTRIE DE OUDE DELFT. March 28, 1950 [March 31, 1949], No. 7787/50. Class 39 (i). The optical system of an image conversion apparatus comprises a spherical concave mirror and a correcting element which produce an image on a photo-cathode provided between the mirror and the correcting element, the fluorescent screen being provided on that side of the photo-cathode which faces the mirror. Either the mirror or the element or both may be outside the vacuous space of the electron system. A spherical mirror 1 and a correcting element 2 adjoin the curved end walls 4, 5 of a vaccum tube 3. A photo-cathode 6 surrounded by a conductive body 7 is mounted concentrically with the mirror 1 and the element 2, and is connected to a conductive cylinder 9. The electron lens is a conductive ball 10 with an aperture 11 and supported on an obturating body 12 of conductive or insulating material, the latter enclosing the fluorescent screen on the end wall 5. The ball 10 is connected by wire 14 to a potential of 12,000 volts. An eyepiece 17 lies adjacent an aperture 16 in the mirror and the fluorescent screen 13. Either the mirror or the correcting element or both may be wholly outside the tube 3, the closure glasses being of adequate optical quality.
Patent GB-268338-A (GB)
Title: Loud speaker
IPC: H04R7/12
Filed: 1927-03-21
Abstract: 268,338. Hopkins Corporation, (Assignees of Hopkins, M. C.). March 23, 1926, [Convention date]. Loud-speakers; diaphragms. - Relates to loudspeakers having resonators or sound boards and more particularly to the kind described in Specification 263,481 comprising a central relatively light and stiff diaphragm 1, which is preferably conical, and a surrounding sound board 2 having a greater mass than that of the diaphragm 1, the coupling between the two parts being such that the portion 1 responds to the higher frequencies whilst the lower frequencies are transmitted to and reproduced by the outer portion 2 and consists in reinforcing the peripheral edge of the sound board, preferably by means of sections of wooden moulding 10. The device shown is of a large size, being preferably suspended by cords or chains. The diaphragm 1 may be made of paper and the sound board 2 of three-ply wood such as fir or spruce, or of balsa wood or " synthetic lumber," as described in Specifications 258,502 and 265,908 respectively. The paper of the diaphragm 1 is creased near its outer edge and folded to form a flared brim 3 which is glued to the bevelled inner edge of the board 2. The diaphragm is vibrated by electromagnetic mechanism connected by a rod 5 to the apex, the magnet structure being housed in a casing 7. This is mounted on a spider 8 secured to the sound board. A smaller instrument, especially intended for use on a table, is described, being formed with feet which are preferably made integral with the lowermost section of the moulding. Specification 263,479 also is referred to.
Patent GB-1003276-A (GB)
Title: Optical elements
IPC: G02B1/02
Filed: 1964-02-25
Abstract: <PICT:1003276/C1/1> <PICT:1003276/C1/2> <PICT:1003276/C1/3> A composite optical element is made by placing two or more solid polycrystalline elements in adjacent relationship, heating the elements to a temperature of between 650 DEG  and 900 DEG  C., preferably between 800 DEG  and 900 DEG  C., exerting such a pressure on the elements that a pressure of at least 12,000, preferably between 20,000 and 40,000 pounds per square inch occurs normal to or parallel to the interface or interfaces between the elements, and maintaining the temperature and pressure for sufficient time, preferably at least five minutes, to bond the elements together.  The elements, which may be of zinc sulphide or magnesium fluoride, may be heated and pressed together in an inert atmosphere, in vacuum or in air. Elements may be bonded using the apparatus of Fig. 1, with the elements 2 either as shown with the bonding pressure normal to the interface or placed side by side with the bonding pressure parallel to the plane of joinder.  The elements may also be bonded without employing an external pressure mechanism by placing the elements 2 in adjacent relationship within a frame 16, Fig. 5, having a coefficient of thermal expansion lower than that of the elements, preferably less than 6.10-6 per  DEG C., and heating the assembly, preferably to a temperature between 760 DEG  and 900 DEG  C., until a pressure of at least 12,000 pounds per square inch occurs across the interface or interfaces between the elements, this bonding pressure being produced by the expansion of the elements 2 against the frame 16. When the coefficients of expansion of the elements and the frame are of similar magnitude, the frame 16 may also contain one or more filler blocks 23, Fig. 6, of a material with a coefficient of expansion greater than that of the elements and preferably greater than 15.10-6 per  DEG C. Specifications 934,421 and 972,812 are referred to.
Patent GB-742668-A (GB)
Title: Nozzles for supplying fuel to the tanks of motor-vehicles
IPC: B60K15/04
Filed: 1953-03-21
Abstract: 742,668. Dispensing liquids. CHUBB, C. L. June 17, 1954 [March 21, 1953], No. 7851/53. Class 116 [Also in Group XVII] Means for supplying fuel to a tank comprises a main supply nozzle 10, and a tube 12 having one end 20 within the nozzle and acted upon by the passing fuel to reduce the pressure therein, the other end of the tube 12 being at the desired maximum level of the fuel in the tank so that when the fuel reaches this level it is sucked into the tube 12 to indicate to the operator that he should stop the fuel supply. The nozzle has a lateral extension 22 to be positioned within the tank and engaged against the top inner surface thereof, and a manually-slidable plate 23 to be engaged with the mouth of the neck of the tank, whereby the nozzle can be detachably secured in positition in the neck.
Patent GB-624192-A (GB)
Title: Improvements in coil-winding machines
IPC: B65H54/58
Filed: 1947-03-22
Abstract: 624,192. Winding hanks. PORTER, D. March 22, 1947, No. 7907. (Class.120 (ii)] In a coil winding machine of the kind equipped with one or more flyers comprising a disc fitted with a pair of spaced parallel rods around which a hank is formed, the thread to be wound is passed from a stationary supply to the rods through a thread guide mounted on a member adapted to be driven step by step through intermittent gearing from a power source employed to drive the flyers, and there is provided on this member a pin &c. arranged for action upon a movable trip or switch for interrupting the drive so automatically stopping the machine when a full complement of coils (a hank) has been wound. Yarn, &c. from supply bobbins 8, is wound into hanks on a number of constantly rotating flyers 6, 7 driven by common belt and chain gearing from an adjustable electric motor. This motor also drives a shaft 56 which through opposed cones 54, 55 and. an adjustable belt 60 drives, through a worm and wormwheel, the driving disc and pin of a Geneva intermittent motion attached to the shaft 42 which, in turn, intermittently drives a chain 26 furnished with guide eyes &c. 25 for the yarn and also with a knock-off pin &c. 27 which contacts a micro-switch &c. and stops the machine when a given number of winds have been effected. In order that the disposition of'the guides 25 with respect to the length of the flyer rods 7 may be effective, a manually operated clutch is disposed between the Geneva gear and the gear 30 of the transverse chain 26. A hand wheel 24 permits the disposition of the flyer arms, at the start of a wind, to be adjusted with respect to the position of the Geneva gear, so to ensure uniformity in lengths wound.
Patent GB-638338-A (GB)
Title: Improvements in the production of textile fabrics
IPC: D06Q1/02
Filed: 1948-03-17
Abstract: Fabrics comprising alkali-resistant yarn and yarn composed of a highly polymerized polymethylene terephthalate, wherein the polymethylene group contains 2-10 carbon atoms, are treated with caustic soda solution to remove at least some of the terephthalate yarn.  The alkali-resistant yarn may be a twistless yarn and may be supported by the terephthalate yarn during the manufacture of the fabric, e.g. it may be supported by twisting the terephthalate yarn or filament round it.  Cotton or regenerated cellulose yarn may be used as the alkali-resistant yarn.  The terephthalate yarn or filament may be of a denier as fine as 10-15 and still have sufficient strength to support the twistless yarn.  In the case of cotton fabrics containing terephthalate yarn, the latter may be removed by the caustic soda solution used in the usual kier boiling treatment, e.g. with a 0.8-2.0 per cent caustic soda solution under a pressure of 5-60 lbs. per sq. inch. Alternatively, an immersion of the fabric in a hot 4 per cent caustic soda solution may effect removal of the terephthalate yarn.  The process may be used for producing cotton fabrics composed of twistless yarn, or decorative effects may be produced in woven, knitted or braided fabrics. Fabrics with twistless yarn in warp or weft or both may be obtained. The supporting yarn of terephthalate may be so fine that after it has been removed the yarns in the resulting fabric are still closely packed.  In an example, a 10 denier yarn of polyethylene terephthalate is twisted round a 1/30 cotton thread so that the thread remains twistless.  The yarn is woven to form a fabric which is then treated with 2 per cent caustic soda under heat and pressure for one hour.  The terephthalate yarn is dissolved, leaving a fine, soft fabric of high strength.  In another example, a fabric is obtained by weaving cotton thread, polyethylene terephthalate yarn being introduced as alternate weft threads over a portion of the fabric.  The terephthalate threads are dissolved in caustic soda solution, and a fabric with a stripe of more loosely woven material is obtained.  In another example, a similar fabric is treated with caustic soda under milder conditions so that the terephthalate threads are only partially removed.  The resultant fabric has a stripe where some of the weft yarns are finer than others. Specifications 550,525, 578,079 and 590,451 are referred to.
Patent GB-392708-A (GB)
Title: Method of and apparatus for preparing fuel gas for combustion in coke ovens
IPC: C10B21/00
Filed: 1932-03-18
Abstract: 392,708. Firing coke ovens. JACKSON, L. MELLERSH-, 28, Southampton Buildings, London.-(Koppers Co. of Delaware ; Koppers Building, Pittsburg, U.S.A.) March 18, 1932, No. 8102. Drawings to Specification. [Classes 51 (i) and 55 (ii).] Naphthalene, preventing deposits of.-In the firing of coke ovens by purified oven gas, or by other relatively cool fuel gas containing naphthalene, water vapour, or other constituent which tends to deposit in the supply conduits, hot gas, such as waste combustion products, is mixed with the fuel gas to raise its temperature above the temperature of deposition of the naphthalene &c., the volume of added gas being small so that the fuel gas is not substantially diluted. The waste gas may be withdrawn from a flue by a fan, and the quantity added may be controlled by a damper actuated by a thermostat in a fuel gas main.
Patent GB-1536069-A (GB)
Title: Charging of a coke oven
IPC: C10B31/02
Filed: 1977-02-25
Abstract: 1536069 Charging a coke oven HUTNI PROJEKT PRAHA 25 Feb 1977 [26 March 1976] 8126/77 Heading F4B A method of supplying a preheated coal charge to a coking chamber 6, Fig. 2, of a coke oven comprises the steps of pneumatically transporting the coal charge from a metering container 81 through a conduit 42 by means of a pressurized neutral carrier medium (such as nitrogen), separating the carrier medium from the coal charge in a degassing separator 46, dividing the separated coal charge into two streams, and distributing the coal charge by gravity through shoots 49, 50 to the coking chamber. The container 81 has closure valves 71, 73 and is supplied with the pressurized carrier gas by a device 75, Fig. 1. By appropriate positioning of valve means 44, Fig. 1, container 81 can supply any of chambers 6-10. Similarly, container 80 (which has closure valves 70, 72 and a carrier medium supply 74) can supply any of chambers 1-5 or 11-15 via conduit 41, degassing separator 45 and shoots 47, 48. The valve means 44 direct the pneumatically transported coal to a required coking chamber via a bent conduit 61, Fig. 3. The coal follows the outer part of the bend and the carrier medium follows the inside of the bend from where it is removed through a pipe 33 and suction conduit 43, Fig. 1.
Patent GB-352965-A (GB)
Title: Improvements in carburettors
IPC: F02M9/00
Filed: 1930-03-13
Abstract: 352,965. Spray carburetters. PEPINSTER, E. L. H., 24, Rue du Champ de Mars, and GENEVE, F., 39, Rue de Chateaudun, both in Paris. March 13, 1930, No. 8153. Convention date, March 29, 1929. [Class 7 (iii).] A plunger-tube forming the nozzle dips into a well which is fed through a fixed calibrated orifice, and receives air under reduced pressure, the amount of dipping of the tube increasing with the throttle opening and vice versa. A valve 7, Fig. 7, serving as the throttle valve, is secured by screws 24 and distance-pieces 25 to a plunger-tube 4 dipping into a well 13 fed from the float chamber 29 through a restricted orifice 3. The throttle is screwed to a sleeve 5 which slides over the wall 1 of the well 13 and has collars adapted to be engaged by a fork 26 of a lever mounted on an axle 27. Air, which enters the well through calibrated apertures 12<2>, is controlled by a flared portion 18 of the tube 4 in conjunction with the upper part of wall 1, and the resulting emulsion is discharged through an annular orifice 6. A byepass is provided at 33. A shaft 28 actuated from the accelerator pedal carries an arm 36, Fig. 9, a pin 35 on which engages a slot in an arm 34 on the shaft 27. When the throttle 7 is in or near its closed position, the arms 36, 34 are at right-angles and therefore the maximum force can be exerted on the valve to overcome the effect of engine suction thereon. The movements of the valve and tube become relatively more rapid as the valve is opened. The dipping of the tube increases the fuel supply and facilitates acceleration. The tube may be perforated in its wall and base as at 15, 16, Fig. 7, or in either of these alone, or its lower end may be open and the perforations dispensed with. In a modification, the valve 7, of butterfly type, is connected to the tube by a link. In a further modification the tube 4 is connected to a spring-loaded suction-actuated piston the movement of which is dependent upon the opening of the throttle valve.
Patent GB-1006799-A (GB)
Title: Improvements in magnetohydrodynamic generators
Inventor: CROITORU ZICU
IPC: H02K44/10
Filed: 1963-02-28
Abstract: 1,006,799. Generators operating by electromagnetic interaction with fluids. ELECTRITE DE FRANCE. Feb. 28, 1963 [March 13, 1962], No. 8166/63. Drawings to Specification. Heading H2A. At least one electrode of a magnetohydrodynamic generator is designed to have an increased area of contact with the plasma and furthermore a surface shape to increase its power to inject electrons into the plasma. The electrode surface is provided with parallel grooves, the direction of the grooves being perpendicular to that of the magnetic field, i.e. they lie in the direction of flow of the gas. The grooves may be rectangular, semi-circular or hexagonal.
Patent GB-1173506-A (GB)
Title: Metallic Frame Member for Fabrication of Semiconductor Devices.
Inventor: SEGERSON EUGENE EDWARD
IPC: H01L23/495
Filed: 1967-02-21
Abstract: 1,173,506. Semi-conductor devices. MOTOROLA Inc. 21 Feb., 1967 [16 March, 1966], No. 8225/67. Heading H1K. A metal strip, e.g. of gold-plated nickel, for use in the manufacture of a plurality of multilead semi-conductor devices consists of two spaced parallel bands, e.g. 14 in Fig. 1, extending the full length of the strip, a plurality of spaced parallel lead connecting portions 16 integral with the bands and perpendicular thereto defining the lateral extremities of a single device, lead spacers 17 between the lead connecting portions, and a number of leads 19 extending outwardly therefrom, each associated with an electrode section 21 extending inwardly. The inward ends of electrodes 21 apart from one, 23, used as a mounting for the semi-conductor body, are arranged in parallel lines on opposite sides of the mounting. This arrangement facilitates thermocompression bonding of wires to the electrodes by machine and subsequent trimming of the bonded wires. In the embodiment indexing holes 29 are provided in the strip to enable it to be accurately located during mounting of an integrated circuit silicon body, attachment of lead wires, and encapsulation in epoxy or silicone resin, which is effected in a transfer mould. After encapsulation the device assembly is severed from the strip, the individual electrodes separated by a shearing operation and those not required are cut off. In a modified arrangement electrode assemblies of two bodies to be disposed in a common encapsulation are provided side by side in each section of the strip. In another arrangement (Fig. 9, not shown) each strip section includes the electrode assemblies of three bodies arranged in line along the strip on a common mounting, which may if desired be divided subsequently. In yet another arrangement (Fig. 7, not shown) the lead spacers are in the form of rings with the leads and electrode sections extending therefrom in a generally radial direction. In all eases the strip may be formed by stamping, etching or machining and the leads coined to facilitate insertion in conventional sockets. Instead of an integrated circuit a ceramic or laminated plastic plate carrying individual diode and transistor bodies and other circuit elements may be mounted in the package.