baber/WOPTO huggingface dataset:
Patent GB-424803-A (GB)
Title: An improved construction of ring or rose for a cylinder lock
IPC: E05B15/02
Filed: 1933-12-29
Abstract: 424,803. Locks. PARKES & SONS, Ltd., J., JAMES, E. G., and PARKES, H. G., Union Works, Willenhall, Staffordshire. Dec. 29, 1933, No. 36574. [Class 44] A sheet-metal rose of the type employed with cylinder locks has an inturned flange g at its periphery and has the usual internal rabbet d to receive the flange of the lock casing. The metal extends from this rabbet in the form of a shallow tube e, the end of which has an out-turned flange f.
Patent GB-1511058-A (GB)
Title: Manufacture of tetrahydrofuran
IPC: B01J31/00
Filed: 1975-09-05
Abstract: 1511058 Manufacture of tetrahydrofuran BASF AG 5 Sept 1975 [7 Sept 1974] 36604/75 Heading C2C The invention comprises a process for the manufacture of tetrahydrofuran wherein an ester of butanediol-1,4 is reacted with countercurrently flowing steam in the presence of an acid catalyst in a reaction chamber having the form of a distillation column. Generally the process is carried out at a temperature of from 80‹ to 200‹ C. Preferably the reaction chamber is either a packed column in which the catalyst is present in the form of a fixed bed and consists of an acid ion exchanger or a plate column and the catalyst is a mineral acid or a mineral acid or an organic acid having a pKa value of 2 or less at 25‹ C.
Patent GB-432484-A (GB)
Title: Improvements relating to electrodes for sparking plugs and other electrical contacts
IPC: H01T13/39
Filed: 1933-12-29
Abstract: Electrical contacts and electrodes particularly for sparking plugs are made from an alloy of aluminium (0,1 to 8 per cent) with nickel, or nickel and one or more of the metals, chromium, manganese or iron. A low nickel content e.g. 15 per cent should correspond with a low aluminium content, e.g. 4 per cent. Suitable proportions are nickel 93 per cent, manganese 4 per cent, aluminium 3 per cent; and nickel 77 per cent, chromium 20 per cent, aluminium 3 per cent.  Alloys containing 80 per cent iron may be used, the aluminium in the case of ferrous alloys being partly replaced by silicon.  Small quantities of molybdenum, titanium, zirconium, tungsten, vanadium, tantalum, copper, beryllium, carbon, calcium, barium, strontium and lithium may be used.  The alloys may also contain up to 0,25 per cent of carbon.
Patent GB-447211-A (GB)
Title: Improvements in or relating to the manufacture of unchilled metallic castings by thecentrifugal casting process
IPC: B22D13/02
Filed: 1934-12-24
Abstract: 447,211. Coating and lining moulds. RIDLEY, W., 18, Cromwell Road, Beeston, and WILSON, P. H., 21, Trevose Gardens, both in Nottingham, and COCHRANES (MIDDLESBRO') FOUNDRY, Ltd., Middlesbrough-on-Tees. Dec. 24, 1934, No. 36933. [Class 83 (i)] Powder such as ferro-silicon, is distributed on the inner surface of a centrifugal mould by a tube a, connected to a supply h and reciprocated axially, the forward movement into the mould being suddenly arrested and reversed. The tube a is preferably arranged with a perforated end a<1>, projecting from a support tube b carried by the runner d. The movement of the tube a is effected mechanically or by direct or alternating current supplied, to a solenoid or electromagnet m<1> respectively, through an interruptor, a spring s giving the forward movement which is suddenly arrested by an adjustable stop t. The end of the return and start of the forward movement are regulated by a dashpot or by the spring s. To avoid a jerk at the beginning of the forward movement the armature n is connected to a parallel motion device o<1> through a yielding connection o<2>.
Patent GB-1508070-A (GB)
Title: Film inspection device
IPC: G01N21/89
Filed: 1975-09-09
Abstract: 1508070 Photo-electric detection of surface flaws in film RESEARCH TECHNOLOGY Inc 9 Sept 1975 [11 Sept 1974] 36986/75 Heading G1A Surface profile variations in motion picture film above an unacceptable value are detected by photo-electrically monitoring the position of a movable attenuator a part of which contacts the film surface. Detection of a fault initiates braking. In the embodiment described means are provided for monitoring the surface at both edges of the film. A lamp 44 which projects into throughbore 40 in housing 34 illuminates photo diodes 50, 52 mounted at either end of the bore. The light paths are partially obstructed by vanes 60, 62 to each of which is attached a jewel which projects partially through an aperture in resilient arm 66 and is cemented into place. The other side of the jewel contacts the film. The resilient arm is clamped at 68 and damped by cylinder 80. Each photodiode circuit includes a coupling capacitor and operational amplifiers in cascade. The second amplifier is provided with a threshold reference above which the brakes are operated.
Patent GB-1130058-A (GB)
Title: Thin film space-charge-limited current triode
IPC: H01L29/00
Filed: 1967-08-11
Abstract: 1,130,058. Semi-conductor devices. HUGHES AIRCRAFT CO. 11 Aug., 1967 [3 Oct., 1966], No. 37035/67. Heading H1K. A space-charge limited current triode comprises a thin film of semi-conductor material disposed on an insulating substrate 6 and having a first region 12 of one conductivity type between second regions 8, 10 of opposite type, the second regions being provided with respective source and drain electrodes 16, 18, the first region having an insulated gate electrode 20 overlying a portion of its surface, and protective means being provided for preventing the formation of a surface inducted conduction channel or inversion layer in the first region. The protective means may consist of a layer 32 of silicon nitride on the portion of the surface of the first region not covered by the gate electrode, or a container 30 which is evacuated or filled with an inert gas to prevent the formation on the exposed surface of the region of an oxide or other undesired layer which would induce an inversion layer. In the preferred embodiment the thin film is a 1 or 2Á silicon layer epitaxially deposited on a sapphire substrate, and the electrodes consist of aluminium. The gate electrode is insulated by a silicon oxide or nitride layer 14 which includes a thin strip 28 covering the junction between the regions 10 and 12.
Patent GB-372602-A (GB)
Abstract: 372,602. Impregnating machines for match splints &c. DIETMANN, P. W., Villa Annero, J÷nk÷ping, Sweden. June 19, 1931, No. 17835. [Class 140.] A machine for impregnating match splints and similar material consists of a container 1 for the impregnating liquid and a rotary member 9 in the container having blades or like projections 10 to immerse the material in and lift it from the liquid, the blades being arranged to slope downwards towards the outlet 2 when they reach the delivery position to allow the material to slide down to the outlet. The member 9 dips below the surface of the liquid to ensure the immersion of the splints. The projections 10 may be wooden bars or arms or perforated plates. In a modification, the outlet for the splints is arranged in a longitudinal extension of the rotary member which may be shaped as the frustrum of a cone or pyramid, and the blades may be disposed askew, e.g. spirally thereon.
Patent GB-1070385-A (GB)
Title: Method of continuous casting
IPC: B22D11/11
Filed: 1963-09-24
Abstract: 1,070,385. Continous casting processes. MANNESMANN A.G. Sept. 24, 1963 [Oct. 4, 1962; June 18, 1963], No. 37500/63. Heading B3F. In a method of continuous casting, a powdery covering material containing at least one highmelting oxide of an alkaline earth metal or rare earth, some of which material remains powdery and some of which melts and forms a slag, is applied to the bath surface at the rate of 3-10 grams per sq. cm. of bath surface. Examples of covering powders are given.
Patent GB-1280315-A (GB)
Title: Process for the production of liquids mixtures of dicarboxylic acid anhydrides from citraconic acid anhydride
Inventor: IBING GUNTHER
IPC: C08G59/42
Filed: 1969-07-28
Abstract: 1280315 Curing epoxy resins VEBACHEMIE AG 28 July 1969 37816/69 Heading C3B [Also in Division C2] Epoxy compounds are mixed with or cured with a mixture of dimethyltetrahydrophthalic anhydrides of the formulae or of the corresponding hexahydro compounds.
Patent GB-971453-A (GB)
Title: Method of drilling an underwater well
IPC: E21B7/12
Filed: 1963-09-26
Abstract: 971,453. Boring earth &c. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. Sept. 26, 1963 [Sept. 28, 1962], No. 37994/63. Heading E1F. A method of drilling an underwater well from a platform 11 comprises lowering a bit 32 on a drill string 21 into contact with the formation to be drilled,  inserting into the drill string a reamer bit 36 of larger diameter than that of the bit 32 and spaced therefrom by a distance greater than the depth of water at the well location, drilling into the formation until the reamer bit has penetrated the formation sufficient to receive a well conductor pipe 35, raising the drill string to bring the reamer bit to the platform, removing the reamer bit from the drill string, and lowering the conductor pipe over the drill string into the hole 38 drilled by the reamer bit. To ensure that the drill string is not completely removed from the formation during drilling the hole 33 the string is supported by slips 28 on a spider 27 below the rotary table 24 during the addition of drill pipe sections, and these sections may be shorter than usual. The drill string contains a telescopic joint 31, and has additionally a centralizer 37 when the bit 36 is added. The joints in the drill string between the bits are locked with a thermoplastic material. The conductor may have a base 40 provided with guide lines 41, 42 and is connected to a running string 44 during installation. Drilling is carried out during a falling tide or during a period where the drop in tide is greater than any rise in tide.
Patent GB-1010393-A (GB)
Title: Double cone friction clutch
IPC: F16D3/76
Filed: 1963-09-27
Abstract: 1,010,393. Friction clutches. LOHMAN & STOLTERFOHT A.G. Sept. 27, 1963 [Nov. 30, 1962], 38134/63. Addition to 954,882. Heading F2C. The double cone friction clutch described in the parent Specification is modified by forming either or both of the preloaded resilient annular members connecting the friction cones 4 with the hub 3 as a number of axially separated elements 6<SP>1</SP>, thereby reducing their thickness and the risk of overheating. Cooling may also be augmented by providing radial openings 17, 18 through the hub between the elements 6<SP>1</SP> to allow the outward flow of air from the centre of the clutch. The resilient elements 6<SP>1</SP> are secured to rigid core and rim members 6<SP>1</SP>a, 6<SP>1</SP>c by conical surfaces tapering towards the middle of the clutch.
Patent GB-842489-A (GB)
Title: An impregnating machine for materials having low permeability
IPC: D21J1/00
Filed: 1957-12-09
Abstract: <PICT:0842489/III/1> A machine for wetting and for impregnating with liquid materials wood fibre hardboards in plate, sheet or strip form, comprises, as shown, two pairs of impregnating rollers 4, 5 and 6, 7 and a pair of cleaning rollers 8, 9 located in sequence, the lower rollers being slightly displaced, in the direction of feed, from the upper rollers.  The upper rollers, which are plain steel cylinders, are journalled in bearings rigid with the frame 1, and the lower rollers in bearings carried by swinging arms 34, which are pivoted to the frame at 35 and connected at their other ends to the pistons of pneumatic cylinders 65, which are pivoted on the frame 1.  The sloping ends of the arms 34 abut against wedges 70 carried by rods 71 which may be adjusted axially by the rotation of worm wheels 73, threaded thereon, by worms on shafts 76 carrying hand-wheels 77. Each such shaft is connected to the corresponding one on the other side of the machine through a dogclutch which is disengaged by a lever 84 connected to a handle (not shown) when the hand-wheels 77 are to be operated, for varying the gap between the rollers independently of the pressure exerted by the pistons 65.  The lower rollers 5 and 7 dip into constant-level water troughs 112, and each is formed by a cylindrical tube 36 (Fig. 7B) having an ebonite mantle 37 and an outer layer of rubber 38 having parallelopiped recesses 39 arranged in staggered rows with their long axes parallel with the axis of the cylinder.  The roller 9 is similar, except that the outer rubber layer is smooth. The upper rollers are driven by chainand-sprocket gearing from an electric motor (not shown) and the lower rollers are friction-driven by spring-pressed rollers 40 which are driven by chains 43 trained around sprockets on the shafts of the upper rollers.  Adjustable guides 12 are placed in front of the rollers to support the sheets, and a spring-pressed scraper 126 removes water etc. from the finishing roller 8.  A control system is provided for adjusting the air-pressure in the cylinders 65.
Patent GB-367968-A (GB)
Title: Improvements in and relating to headlights of motor vehicles
IPC: F21V11/16
Filed: 1930-12-22
Abstract: 367,968. Vehicle headlamps. LIEDTKE, A., 45, Feldbergstrasse, and BECKER, W., 37, Myliusstrasse, both in Frankfort-on-Main, Germany. Dec. 22, 1930, No. 38523. Convention date, Jan. 11. [Classes 75 (ii) and 75 (iv).] Systems of lighting; lantern fronts.-The near side headlight d of a motor vehicle is screened by a diffuser so as to' give a diffuse light, and the offside headlight e projects a far reaching light. The screen comprises a transparent disc with superposed pieces of fabric, such as silks and tulles, the meshes in the lower half a<1> being finer than those in the upper half a. The filter a, a<1> is stretched in a metal frame b, and is attached to the headlight by a cloth hood. The fabric may be in several layers, or may be embedded in the transparent disc instead of being stretched over its surface.
Patent GB-999990-A (GB)
Title: Improvements in two-stage control mechanism
IPC: G05D13/10
Filed: 1962-10-11
Abstract: 999,990. Coupling flywheels to casings. ZAVODY V.I. LENINA PLZEN NARODNI PODNIK. Oct. 11, 1962 [Oct. 11, 1961], No. 38554/62. Heading F2U. [Also in Division G3] A two-stage control mechanism comprises a flywheel 11 enclosed in a housing and rotatably supported on a shaft 12 which shaft 12 is driven through gears 42, 32 by a control shaft 43, the housing having first and second end covers 27, 26 secured to shaft 12, two diametrically arranged cranks 14 pivotally supported on the first end cover 27 to ensure the position of the flywheel 11 at a first stop point and two diametrically arranged cranks 22 pivotally mounted on the second end cover 26 to ensure the position of the flywheel at a second stop position. The flywheel 11 is attached by pins 18, passing through slots 45 in the shaft 12, to a sleeve 19 rotatably mounted in the shaft 12. During normal rotation of the shaft 12, rollers 15 on the ends of the spring-loaded cranks 14 bear on a flat surface of a cam 17 attached to the flywheel 11 and return the flywheel 11 in a first stop position in which a bore 34 in the sleeve 19 is out of alignment with a bore 35 in the shaft 12. The non-alignment of the bore 34, 35 prevents oil flow through pipe 29, Fig. 5, with the result that the oil pressures behind and in front of a throttle 39 and a pipe 40 are equal and are the same as that which acts on a regulating member connected to the outlet of a pipe 41. If the speed of the shaft 12 increases, the rollers 15 move on the circular portion of the cam 17 and the flywheel 11 moves to a second stop position in which the bores 34, 35 are aligned, thereby allowing the passage of oil through the pipe 29 with a resultant pressure drop in the oil acting on the regulating member of the outlet of pipe 41. The flywheel 11 is held in the second stop position by rollers 23, on the cranks 22, running on to the inclined positions of the cam segments 24 attached to the flywheel 11. Springs 20, secured to the hub on the second cover 26, bearing on rollers 21 attached to the flywheel 11 prevent the flywheel 11 rotating to its first stop position.
Patent GB-1241569-A (GB)
Title: Reduction of aromatic nitrosocompounds to aromatic secondary amines
Inventor: DODMAN DAVID
Filed: 1968-08-13
Abstract: 1,241,569. Heavy metal compounds. IMPERIAL CHEMICAL INDUSTRIES Ltd. 15 July, 1969 [13 Aug., 1968], No. 38709/68. Heading C1A. [Also in Divisions B1 and C2] A combination of two or more of the heavy metals iron, manganese, cobalt, copper, nickel, silver, cerium and lead as their oxides, hydroxides or carbonates or mixtures thereof or a partial reduction product thereof is prepared by a process including as a step either a coprecipitation from solution or a heating together of said heavy metals as their hydroxides or heat unstable salts. In examples: (1) manganese acetate and silver nitrate in solution were treated with sodium hydroxide, the precipitate adsorbed on pumice and partially reduced with carbon monoxide; (2) a cupric and manganous nitrate solution was treated with sodium hydroxide and the precipitate adsorbed on charcoal; (3) cerous nitrate and cupric nitrate in solution were treated with sodium carbonate, the precipitate adsorbed on pumice and then partially reduced with carbon monoxide. The combinations are used as catalysts for the production of aromatic secondary amines from aromatic nitroso compounds hydrogen and an aldehyde or ketone.
Patent GB-1134736-A (GB)
Title: Tropylium salts
Inventor: BOULTON JEFFERY JOHN KENDALL
IPC: C08F4/00
Filed: 1966-08-31
Abstract: 1,134,736. Tropylium salts as polymerization catalysts. BP CHEMICALS (U.K.) Ltd. 18 Aug., 1967 [31 Aug., 1966], No. 38740/66. Heading C3P. [Also in Division C5] Tropylium salts of the formula Tr<SP>+</SP>XF 6 - wherein Tr<SP>+</SP> represents a tropylium ion and X is phosphorus arsenic or antimony, are used as catalysts in the polymerization or copolymerization of a vinyl ether or N-vinyl carbazole. Monomeric materials may be polymerized in bulk, in solution or in dispersion at - 70‹ to 100‹ C. in the absence of air and water. Solvents which may be used include benzene, nitromethane, nitroethane, acetonitrile, acrylonitrile and methylene chloride. The tropylium salt catalyst may be present in amount 0À01- 0À5% by wt. of the monomers present. Examples describe the polymerization of isobutyl vinyl ether and of N-vinyl carbazole and the copolymerization of isobutyl vinyl ether and N-vinyl carbazole.
Patent GB-1462358-A (GB)
Title: Internal combustion engines and  pistons therefor
IPC: F16J9/12
Filed: 1973-08-16
Abstract: 1462358 Piston rings DOXFORD HAWTHORN RESEARCH SERVICES Ltd J F BUTLER and E P CROWDY 9 July 1974 [16 Aug 1973] 38755/73 Heading F2T In an I.C. engine piston 10, unidirectional rotation of a piston ring 12 is assisted by a coil spring 14, having an end 15 fixed in relation to the ring 12. The spring 14 preferably engages a groove 13. Two piston rings may have springs arranged to cause counter-rotation. The spring 14 may be of circular, trapezoidal or rectangular section material. The plane of the piston ring groove 11 may be inclined to the plane normal to the piston axis.
Patent GB-1067649-A (GB)
Title: Process and apparatus for rendering oils and fats from solid oil-bearing materials
Inventor: LING THOMAS SYDNEY
IPC: C11B1/00
Filed: 1964-09-23
Abstract: Oils and fats are obtained from solid animal and vegetable materials by passing the materials in sequence through a crusher (10, 11) a heat exchanger (19), where water is preferably added to the materials, a disintegrator (23), a second heat exchanger (27), and a centrifuge (30). Each heat exchanger comprises a jacketed trough enclosing a variable speed, hollow, heated screw conveyer, and may be of the kind described in Specification 883,051.  The disintegrator (23) utilizes steam impingement, and is followed by a centrifuge (24) which separates water, fats and oils.  The pressure in the exchanger (27) is controlled by an open impeller centrifugal pump which delivers the material to a flash vessel (29), followed by the centrifuge (30), dryer (31) and a second disintegrator (33).  The centrifuges (24, 30) deliver separated liquids to a tank (26) which is followed by a centrifuge (35) from which separated water may be pumped to the exchanger (19).
Patent GB-1039121-A (GB)
Title: Improvements in or relating to tubular furniture frames
Inventor: WELTON THOMAS SPEIR
IPC: A47B47/00
Filed: 1961-10-31
Abstract: 1,039,121. Tubular furniture frames; seats. BRITISH ALUMINIUM CO. Ltd. Jan. 14, 1963 [Oct. 31, 1961], No. 38924/61. Headings A4H and A4J. Aluminium tubular furniture frames of internal rectangular section are interconnected by using synthetic resin plugs 10 which have a central portion 2; of the same cross-section as that of the frames, and arms 1, which are a close fit within the ends of the frames and can be made with several arms 1 extending in any predetermined direction. A chair so constructed is shown in Fig. 5 which also has flexible webbing 12 stretched between the rails 7, 8, 9 to support cushions. The webbing is attached to the frames by using wire clips which spring into apertures in the rails.
Patent GB-1162587-A (GB)
Title: Improvements in or relating to Self-Locking Retaining Rings
Inventor: WURZEL HUGO
IPC: F16B21/20
Filed: 1967-08-24
Abstract: 1,162,587. Circlips &c. WALDES KOHl- NOOK Inc. 24 Aug., 1967, No. 39047/67. Heading F2H. A self-locking retaining ring for insertion in a circular bore of a housing 12 comprises a plane, closed ring 10, the external diameter of which is greater than the bore diameter and the ring being deformable to the shape of a Belleville spring washer having an external diameter equal to the diameter of the bore. When the ring is forced into the bore it deforms into a truncated conical shape, the deformation being assisted by recesses 16 cut in the outer edge of the ring. Recesses may also be formed on the inner edge of the ring.
Patent GB-344111-A (GB)
Title: Improvements in display stands for hats
IPC: A47F7/06
Filed: 1929-12-24
Abstract: 344,111. Stands. BATTERSBY, F., 21, Nicholl Square, London. Dec. 24, 1929, No. 39431. [Class 52 (v).] A display stand for a hat is formed with a channel or groove to receive the brim of the hat and a cradle to receive its crown. In the construction shown the stand is formed of a sheet metal blank bent to form a groove d for the brim of the hat and legs e, f. Upwardly bent and curved portions b, c form the cradle for the crown of the hat. The outer part d<1> of the brim groove d may form a name plate. The inclination of the stand may be varied by bending the legs. The stand may be formed of wood &c. or partly wood and partly rubber &c. covered wire and the legs may be pivoted to adjust the inclination.