baber/WOPTO huggingface dataset:
Patent GB-1049885-A (GB)
Title: A method of producing projections on heavy wall sections
IPC: B21K21/00
Filed: 1963-08-29
Abstract: 1,049,885. Making pressure vessels. ZAVODY V. I. LENINA PLZEN, NARODNI PODNIK. Aug. 29, 1963 [Aug. 29, 1962], No. 34137/63. Headings B3A and B3H. A large metal component, particularly a pressure vessel, having one or more projections 1, is built up of separate parts secured together as by welding, the part or parts having the projection or projections being formed by forging or rolling. In a pressure vessel the branch connections are formed with part of the vessel wall by forging or rolling and machining.
Patent GB-523151-A (GB)
Title: Improvements relating to biological processes for the purification of liquids
IPC: C02F3/12
Filed: 1938-11-24
Abstract: 523,151. Treating sewage &c. GRIFFIN, J. D. Nov. 24, 1938, No. 34254. [Classes 46 and 111] Activated sludge and liquid to be purified are mixed together by the filtrate from an artificially aerated biological filter falling from above. Raw sewage is supplied through a pipe 2 to a tank 1 where it is mixed with activated sludge. Mixed sludge and sewage are withdrawn through cocks 5 by a pump 6 and delivered through a pipe 13 to a sprinkler 14 which distributes it over a filter 12: The filtrate falls on to 'the surface of the liquid in the tank 1. A fan 11 passes air, which may be mixed with gases to be purified, downward through the filter. There is a gas outlet 18, and an outlet 7 for purified sewage. Excess sludge is discharged through a pipe 16. Raw sewage may be fed to the top of 'the filter. Plant may comprise two or more units as described through which sewage and gases to be puirified may be passed. successively.
Patent GB-1105400-A (GB)
Title: Electromechanical system for controlling the direction of radiation of a reflector
IPC: H01Q3/02
Filed: 1966-07-29
Abstract: 1,105,400. Electric analogue calculating. CSF-COMPAGME GENERALE DE TELEGRAPHIE SANS FIL. 29 July, 1966 [6 Aug., 1965], No. 34304/66, Heading G4G. [Also in Division H4] The Specification describes means for calculating the azimuth g<SP>1</SP>. Fig. 1, and elecration S<SP>1</SP> of the perpendicular OB to a plane reflector at co-ordinate system origon 0 necessary to cause a beam of electromagnetic radiation coming along the X axis, to be reflected along the path OA having azimuth and elevations g and S respectively. The equations connecting the various azimuths &c. are: An analogue computer system for carrying out the above two functions is shown in Fig. 2, and is supplied with an A.C. voltage, of amplitude U proportional to the length OA, the construction of Fig. 1, being such that Aa = Rb, a<SP>1</SP>a = b<SP>1</SP>b, a<SP>1</SP>b<SP>1</SP> = ab, Oa<SP>1</SP> = OA. Also by the laws of reflection, AOB = BOX. Resolvers R 1 , R 2 , R 3  and R 4  comprise-two orthogonally wound stators (1), (2), Fig. 8 (not shown) and two. orthogonally wound rotors (1<SP>1</SP>) (2<SP>1</SP>). Thus if the voltage U is applied to one stator and the rotor is rotated by angle S, the two rotor outputs will be U Sin S and U Cos S. The latter signal is fed to one stator of resolver R 2  which has its rotor rotated by angle g to give rotor outputs of U Cos S. Sin g and U Cos S. Cos g. The latter signal is added in adder Ad to the signal U to give a signal U Gos S. Cos g + U which is applied to one stator of resolver R 3 . The signal U Cos S Sin g is applied to the other stator of resolver R 3 . If the rotor angle of resolver R 3  is #, then the output of the rotors will be (U. Cos S. Sin g. Cos #) + (U Cos S. Cos g + U) Sin # and (U. Cos S. Sin g. Sin #) - (U Cos S: Cos g + U) Cos # respectively. If the latter signal is used via an amplifier A 3  to energize a motor M 3  rotating the rotor, the rotor will turn until Cos S. Sin g. Sin # = (Cos S. Cos g + 1) Cos #,on The rotor of resolver R 3  then assumes the angle g<SP>1</SP>. The output of the other rotor will be U#(Cos S. Cos g+1)<SP>2</SP> + (Sin g. Cos S)<SP>2</SP>, and this is fed to one stator of resolver R 4 . The other stator is fed with the signal U Sin S, and by use of a servo control system similar to that used on resolver R 3 , the rotor of resolver R 4  takes up the angle S<SP>1</SP>. By using the principle that the operation of the resolvers is reversible Fig. 7 (not shown), shows on adaptation of the arrangement of Fig. 6, whereby angles S and g may be obtained from known angles S<SP>1</SP> and g<SP>1</SP>. By mechanically coupling the rotors of respective resolvers in the arrangements of Figs. 6 and 7, having the same rotor angles, the effective angles S 1  and g 1  for assumed theoretical angles S and g may be found. Fig. 13 shows a Cassagrain type antenna using the invention.
Patent GB-639543-A (GB)
Title: Improvements relating to thermionic valve amplifiers utilising electron multiplier valves
Inventor: WHITE ERIC LAWRENCE CASLING
IPC: H01J43/02
Filed: 1946-11-20
Abstract: 639,543. Circuits for electron multipliers. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Nov. 20, 1946, No. 34332. [Class 40 (vi)] In an amplifier circuit comprising an electronmultiplier valve negative feedback is applied by means of a feedback loop including a dynode (i.e. a secondary emission cathode) of the valve. Fig. 1 shows an amplifier circuit for applying an incoming signal at 1 to a low impedance load connected across the output 2. The secondary emission valve 5 has its dynode 9, D.C. coupled to the control grid of a cathode-follower stage 3, negative feedback being obtained by coupling the cathode circuits of the two valves and the dynode being de-coupled by resistor, capacitor network 11, 22. In a modification, Fig. 4 (not shown), the dynode is connected via a resistor to a point of fixed potential and is de-coupled by a capacitor to the anode of the secondary emission-valve. The second valve 3 may be a tetrode or screen grid valve, having its screen electrode decoupled to its cathode and the output taken from the anode thus giving a high impedance output. Fig. 5 shows a modification in which the electron-multiplier is arranged to operate as a cathode-follower stage of low output impedance, the negative feedback being obtained from dynode to cathode over capacitor 27 and resistor 39. In a further modification, Fig. 3 (not shown), the input signal is applied to the cathode of the electron-multiplier valve and the output taken from the control grid, the screen and dynode of the valve both being taken to H.T. positive and the negative feedback circuit coupling the anode to control grid by a resistor and capacitor in parallel. The feedback loop thus comprises the space current path of the valve and therefore includes the dynode. In all of the circuits, the potential of the dynode of the electron-multiplier valve is preferably adjusted to the point at which an increasing potential produces no further current flow to the electrode, a very high impedance thus being obtained at the dynode electrode. Specifications 564,821 and 617,184 are referred to.
Patent GB-450384-A (GB)
Title: Improvements in flexible mountings for carrying rollers on endless track vehicles
IPC: B62D55/108
Filed: 1935-12-12
Abstract: 450,384. Endless - - track vehicles. KEGRESSE, A., 48, Rue du ThÚÔtre, Paris. Dec. 12, 1935, No. 34497. Convention date, Dec. 13, 1934. [Class 79 (i)] The axles 9 of the load-carrying rollers 1 of an endless-track vehicle are mounted in an equalizing lever 2 by means of a flexible resilient sleeve or member 7 which allows limited play in all directions, the lever 2 being itself resiliently mounted at 3 in a support 5. The member 7 comprises a rubber sleeve fixed on a trunnion pin 6 of the lever and compressed into a socket 8 fixed on the roller axle 9. The lever 2 is mounted on the support 5 by rubber blocks 3 spaced by a cross 4 fixed to 5, as described in Specification 413,490. The trunnion pins 6 may be above or below or at the same level as the roller axles. A single equalizing lever may be used with rollers on each side of it.
Patent GB-321838-A (GB)
Title: Improved method of fastening covers to hatchway coamings, and the like
IPC: B63B19/24
Filed: 1928-11-23
Abstract: 321,838. Todd, J. Nov. 23, 1928. Hatch fastenings.-A clamp for hatch cover battens comprises a stand T mounted on the angle G secured to the coaming and provided with a helical surface on the adjacent side. A movable member W is provided with a spindle D working in an orifice in the stand aud has a helical surface similar to that on the stand. Rotations of the screw member W causes it to advance and clamp the batten. bar Hand tarpaulin T against the coaming F.
Patent GB-1199675-A (GB)
Title: Pelletizing Water-Soluble Dyestuffs
Inventor: FOX MAURICE RAYNER
IPC: B01J2/20
Filed: 1968-07-19
Abstract: 1,199,675. Extruding dyestuffs. IMPERIAL CHEMICAL INDUSTRIES Ltd. 28 May, 1969 [19 July, 1968], No. 34540/68. Heading B5A. [Also in Division C4] To reduce the dust hazards of water-soluble dyestuffs, an aqueous paste thereof is extruded through one or more orifices, the extrudate being either dried and broken into pellets or vice versa. The drying may be effected in vacuo and the extrudate may be collected on a moving band which passes through a hot-air drier. In an example, a dyestuff paste comprising 5 parts by weight of the dyestuff with an equal weight of water is extruded on to a plate which is placed in an oven at 60‹ C. for 30 min. After drying, the plate is inverted and tapped, thereby removing the dyestuff which simultaneously breaks into lengths of 10-15 mm.
Patent GB-341181-A (GB)
Title: Improvements in or relating to hasps and staples
IPC: E05C19/08
Filed: 1929-11-13
Abstract: 341,181. Hasp fastenings. PIMLOTT, T. W., Holly Bank, Henbury, Macclesfield, Cheshire. Nov. 13, 1929, No. 34581. [Class 44.] A two-part base for a hasp or staple has one part adapted to engage rotatably the other. As shown in Fig. 1 the part a of the hasp base which is screwed to the door may have segmental flanges which are adapted to engage with similar flanges on the part b. Alternatively, as shown in Fig. 3. the part a is formed with a rectangular gap and the part b takes the form of a parallel sided plate with rounded ends which are adapted to pass behind the part a when part b is given a quarter turn.
Patent GB-309376-A (GB)
Title: Improvements in or relating to electric heating elements
IPC: H05B3/16
Filed: 1928-11-26
Abstract: 309,376. Rhodes, A. J. Nov. 26, 1928. Wire resistances, mounted on frames.- Resistance wire is wound between opposing rows of insulating bobbins 13 mounted on a base plate or frame formed in two parts 5, 6 flexibly connected along a longitudinal axis and capable of separation in such a manner as to tighten the wire by a device which expands with rise in temperature of the wire.. As described, two metal plates are hinged together and have arcuate brass strips 16 at each end which tend to bring the plates into alignment on heating. The resistance wire 11 is passed around twopart bobbins, comprising a sleeve 17 and flanged plug 18 between which the wire is gripped. In a modified form the hinges between the plates are replaced by a fold or rib in a single sheet of metal.
Patent GB-766882-A (GB)
Title: Improvements in or relating to deflecting means for cathode ray tubes
IPC: H01J29/76
Filed: 1953-12-14
Abstract: 766,882. Electromagnets. GENERAL ELECTRIC CO., Ltd., and BIGGS, A. J. Dec. 14, 1954 [Dec. 14, 1953], No. 34768/53. Class 35. [Also in Groups XL (a) and XL (c)] Cathode-ray receiver apparatus in which the maximum beam deflection is limited by the beam striking the envelope at the junction between the neck and cone comprises main deflecting means disposed near the junction of the neck and cone and auxiliary means for deflecting the beam before deflection by the main means, the auxiliary means deflecting the beam through a small angle in a direction opposite to but synchronized with the main deflection. In one form, Fig. 2, the leakage field of two main deflecting coils 12, 13 is used to effect the auxiliary deflection. For this purpose ferromagnetic core 14 leaves the coil ends uncovered and the leakage field is concentrated by ferromagnetic segments 15, 16. By suitable design the leakage fields can be made to occur in one or two deflection directions so that the auxiliary deflection field effects deflection likewise in one or two directions of deflection. One of the main coils gives horizontal deflection and the other vertical deflection. In another embodiment, Fig. 1 (not shown) there are two main deflection coils where the cone and neck join and two auxiliary coils on the gun side thereof, the auxiliary coils each having a smaller number of turns than the main coils. The main and auxiliary coils are supplied with sawtooth currents of the same magnitude but opposite direction from common horizontal and vertical deflection generators. The maximum auxiliary deflection angle is preferably made proportional to the total resultant deflection of the main and auxiliary deflection means. The Provisional Specification states that the deflecting coils can be replaced by an electrostatic deflecting system.
Patent GB-490667-A (GB)
Title: Composite board material and its manufacture
IPC: B28B7/34
Filed: 1936-12-18
Abstract: 490,667. Plaster boards &c. LEFEBURE, V., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Dec. 18, 1936, No. 34909. [Class 87 (i)] Composite board material is made by allowing a layer of water-setting plaster or cement to set while in contact on both sides with relatively thin liners of fibrous material, e.g. pulpboard, one or both liners (a) being treated, on the side which is to contact with the wet plastic, with a water-soluble or water-softening adhesive such as starch, or (b) consisting of two or more plies united by water-soluble or water-softening adhesive or having a plane of weakness between at least two plies due, e.g. to loading between the plies, to compacting the surfaces, or to drying them abnormally before uniting them. Preferably the outer ply is thicker than the inner one. The board may be reinforced with wire gauze or perforated pulpboard. An ordinary board may be secured to one face of the improved board with or without an intermediate liner. The core may be cellular or of coloured, mottled or veined plaster or plaster containing coloured aggregates or formed in two layers with or without an interposed fibrous layer which may be perforated. Specifications 451,112, [Group V], and 490,668 are referred to. According to the Provisional Specification, the watersoftening adhesive may be applied to the core instead of to the liners.
Patent GB-1414060-A (GB)
Title: Semoconductor devices
IPC: C30B19/10
Filed: 1973-07-23
Abstract: 1414060 Manufacture of multilayer semiconductors MATSUSHITA ELECTRONICS CORP 23 July 1973 [28 July 1972 (2)] 34945' 73 Heading B1S A method of manufacturing a multi-layer semiconductor device in which layers are formed from the liquid phase by epitaxial growth includes the steps of: allowing a semiconductor substrate successively to contact at least two different semiconductor solutions chosen to produce subsequent first and second epitaxial growth layers on the substrate; and, between application of said two solutions, applying to the first layer another solution, which is capable of epitaxial growth, which dissolves from the surface of the first layer one or more components of the first solution unnecessary to the second solution and remaining on the surface, and which is substantially saturated with other solute(s) of the first solution, the temperature of the said another solution being controlled to be not lowered during its application to the first layer, whereby said another solution does not form a growth layer. The specification describes the use of GaAs as substrate; of semiconductor solutions containing Ga, Al and GaAs doped with Te, Ga and GaAs doped with Si, Ga, Al and GaAs doped with Zn and Ga and GaAs doped with Zn; and of "dissolving" solutions containing Ga and GaAs. The invention is illustrated with reference, to Figs. 5 and 7A wherein a quartz tube 7' has an electric heater 8' and contains a holder 30 with recess for substrate 1, the holder being in contact with a rotatable rotary boat 20 having seven holes for solution receptacles 70, 80, 90, 100, 110, 120 and 13 (containing semi-conductor solutions A, B, C, and D and "dissolving solutions a, b and c). The products find application in laser devices.
Patent GB-962229-A (GB)
Title: Epoxy resin compositions and their preparation
IPC: C09D5/46
Filed: 1960-10-12
Abstract: A curable composition comprises an epoxy resin, a boron-trifluoride-amine complex curing agent having a decomposition temperature above 130 DEG C., finely divided silica and/or fume silica and a polyvinylal resin.  Curing agents specified are BF3-piperidine complex, and BF3-triethanolamine complex.  The polyvinylal resin may be prepared by combining formaldehyde, acetaldehyde, propionaldehyde, butyraldehyde or benzaldehyde with partially or completely hydrolyzed polyvinyl esters, e.g. the acetate, propionate or butyrate.  The compositions may be prepared by adding the fillers and polyvinylal resin to the heated epoxy resin, cooling to 90-130 DEG C. and adding the curing agent, which may be partially reacted to a stage short of gelation. The mixture may be cooled in liquid nitrogen and pulverized in a hammer mill.  In Example 3, the composition contains 100 grams of "Araldite" 6060 (Registered Trade Mark), 40 grams of polyvinylal resin "Formvar" (Registered Trade Mark), 4 grams of BF3-piperidine complex, 70 grams of 200-mesh silica, and 3 grams of fume silica.  Example 6 is similar but uses a BF3-triethanolamin complex as curing agent.  The compositions may be used for coating steel panels by the fluidized bed method.  Specifications 518,057 and 579,698 are referred to.
Patent GB-1268674-A (GB)
Title: Weldable foam materials based on polyurethane
IPC: C08J9/42
Filed: 1969-07-11
Abstract: 1,268,674. Sized polyurethane foam. RUDOLPH KOEPP & CO. CHEMISCHE FABRIK. A.G. 11 July, 1969 [19 July, 1968], No. 35023/69. Heading B2E. [Also in Division B5] A open pore polyurethane foam structure is sized with a polymer or copolymer of vinylidene chloride to improve the weldability thereof. The polyurethane may be a polyether or polyester polyurethane and the structure may be a board or sheet which may be up to 100 mm. thick. The polymer or copolymer of vinylidene chloride preferably has a heat sealing temperature of at least 100C. The vinylidene chloride may be copolymerised with an acrylic acid ester or vinyl chloride. The vinylidene chloride polymer or copolymer may be applied to the foam contained in a carrier medium by imbibition, spraying, kneading, centrifugal impregnation or by the application of a vacuum, the carrier medium evaporated and the impregnated foam then heated so that the applied polymer flows together and adheres to the foam. The treating composition may be in the form of an aqueous dispersion or of a paste or solution and may also contain plasticizers and hydrogen chloride absorbing additives, 3-30% by weight of vinylidene chloride polymer or copolymer may be applied to the foam.
Patent GB-922330-A (GB)
Title: Internal combustion engine ignition systems
IPC: F02P3/08
Filed: 1960-10-13
Abstract: 922,330. Ignition systems. VILLIERS ENGINEERING CO. Ltd., N. M. CORFIELD, and K. A. SMITH. Oct. 2, 1961 [Oct. 13, 1960], No. 35039/60. Class 7(4) In an ignition system of the condenser discharge type, a rectifier 11 is provided to restrict current flow from the condenser 12 to the generator winding 10 and a second rectifier 15 in series with a resistor 16, if necessary, is connected across the winding 10. A high tension step up transformer may be provided for each sparking plug of a multi-cylinder engine. The generator may be adapted to provide a lighting output.
Patent GB-646219-A (GB)
Title: Improvements in and relating to the dehydration of aqueous solutions of formic acid
IPC: C07C51/44
Filed: 1947-12-31
Abstract: Formic acid is dehydrated in a two-stage distillation system, the aqueous feed-acid being supplied at a point in the system where formic acid of the same concentration is present; one stage comprises the concentration of 77 per cent acid (i.e. the C.B.M. of formic acid and water) to 85-95 per cent by rectification in the presence of a water-entrainer, with reflux of entrainer and also part of the water, which separate in the usual decanter, keeping several plates at the base of the column free of entrainer, and the other stage comprises fractionating without an entrainer, the 85-95 per cent acid from the entrainer-distillation stage to give substantially anhydrous formic acid as head-product, and 77 per cent acid as residue; this residue is passed to the entrainer-distillation stage.  Suitable entrainers are butyl, isobutyl, amyl and isoamyl formates; also butyl oxide and methylpropyl ketone.  In an example 77 per cent formic acid is fed from tank 1 through pipes 2 and 2a into column 3 which is charged with butyl formate.  The base of the column is maintained at 103.5 DEG  C.  The butyl formate/water binary taken off at the head of <PICT:0646219/III/1> the column, is condensed and the condensate is passed to decanter 5.  The formate-layer is completely refluxed through pipe 6; and the water-layer is partly withdrawn from the system through pipe 7, and partly returned to the column through pipe 8.  Formic acid of about 90 per cent strength and almost free from butyl formate, is withdrawn from the base of column 3 and passed through pipe 11 into column 10.  Anhydrous formic acid is withdrawn from column 10 through pipe 12, while the 77 per cent acid which collects at the base, is passed to tank 13 and then pumped to tank 1 through pipe 15.  A draw-off pipe 16 is provided on the reflux vessel of column 10 in order to remove any small quantities of butyl formate and water which may have inadvertently passed into column 10.  The mixture withdrawn through pipe 16 is returned to column 3 through pipe 17.  In another example, the feed is 95 per cent formic acid. This is introduced directly into column 10 through pipes 18 and 18b, and column 3 is charged with butyl oxide.  The whole or any part of the process may be carried out at a pressure different from atmospheric.  Specification 303,742, [Class 32], is referred to.
Patent GB-460270-A (GB)
Title: Improvements in or relating to roentgen-ray tubes
IPC: H01J35/06
Filed: 1935-05-20
Abstract: 460,270. R÷ntgen-ray tubes. AJKAY, F. R., and BITTERA, J. May 20, 1935, No. 35080/36. Divided out of 460,181, under which a Specification was laid open to inspection under Sect. 91 of the Acts, Nov. 20, 1935. [Class 39 (i)] The cathode b of a R÷ntgen-ray tube is heated by induction from a high - frequency coreless induction coil d surrounding the tube. The temperature of the cathode may be regulated by moving an adjustably-mounted coil or by altering the intensity or frequency of the current through the coil. Specification 299,735, [Class 39 (i)], is referred to.