baber/WOPTO huggingface dataset:
Patent GB-814795-A (GB)
Title: Improvements relating to the removal of oxygen from aqueous solution
IPC: B01J39/04
Filed: 1957-09-19
Abstract: A process for the removal of oxygen from an aqueous solution comprises treating the solution with activated carbon or activated coal that has been treated with a neutral or alkaline solution of a dithionite.  The water may be passed through a bed of the dithionite-treated activated carbon or coal and the flow periodically interrupted for regeneration of the bed with dithionite.  As neutral dithionite solutions readily decompose the solutions should be freshly prepared and may be stabilized by the addition of an alkali e.g. NaOH.  The activated carbon or activated coal may be obtained by subjecting carbon or coal to any known activation treatment e.g. charcoal treated with zinc chloride or coal treated with sulphuric acid.  Carbons or coals which have not been subjected to any activation treatment are unsuitable.  In examples 30 g. Na2S2O4, as a 1 per cent solution, is used to treat 1 litre of each of the following materials: (i) 0.2-1.3 mm. grain hard coal activated with oleum; (ii) a commercial activated carbon; (iii) 0.3-1.2 mm. grain lignite activated with sulphuric acid; (iv) unactivated 0.3-1.2 mm. grain hard coal; (v) unactivated 0.3-1.2 mm. grain lignite; (vi) a cation-exchanger obtained by sulphonation of polystyrene cross-linked with divinyl benzene.  The efficiency of (i), (ii) and (iii) for oxygen removal is contrasted with that of (iv), (v) and (vi).  In each case the dithionite treatment is affected by passing the 1 per cent solution through the coal or carbon in a filter for 30 minutes.ALSO:A process for the removal of oxygen from an aqueous solution comprises treating the solution with activated carbon or activated coal that has been treated with a neutral or alkaline solution of a dithionite.  The water may be passed through a bed of the dithionite-treated activated carbon or coal and the flow periodically interrupted for regeneration of the bed with dithionite. As neutral dithionite solutions readily decompose the solutions should be freshly prepared and may be stabilised by the addition of an alkali e.g. NaOH.  The activated carbon or activated coal may be obtained by subjecting carbon or coal to any known activation treatment e.g. charcoal treated with zinc chloride or coal treated with sulphuric acid.  Carbons or coals which have not been subjected to any activation treatment are unsuitable.  In examples 30g. Na2S2O4, as a 1 per cent. solution, is used to treat 1 litre of each of the following materials (i) 0,2-1,3mm. grain hard coal activated with oleum; (ii) a commercial activated carbon; (iii) 0,3-1,2mm. grain lignite activated with sulphuric acid; (iv) unactivated 0,3-1,2mm. grain hard coal; (v) unactivated 0,3-1,2mm. grain lignite; (vi) a cation-exchanger obtained by sulphonation of polystryrene cross-linked with divinyl benzene. The efficiency of (i), (ii) and (iii) for oxygen removal is contrasted with that of (iv), (v) and (vi).  In each case the dithionite treatment is affected by passing the 1 per cent. solution through the coal or carbon in a filter for 30 minutes.
Patent GB-1044184-A (GB)
Title: Improvements in and relating to conveying apparatus
Inventor: SCARPER ERIC WALTER
Filed: 1963-07-26
Abstract: 1,044,184. Endless conveyers. BAKER PERKINS Ltd. July 15, 1964 [July 26, 1963], No. 29658/63. Heading B8A. [Also in Division F4]  A conveyer in a forced draught refrigerated chamber 1 comprises a pair of endless chains 4, 5, joined by cross-bars 15 on each link. Each cross-bar 15 has three upstanding corrugated support arms 16 against which complete wafer sandwiches rest on the upper conveying run. The chains 4, 5 run between guides 12, 13 on the upper run while the wafer sandwiches are supported entirely between the chains 4, 5 by an endless belt 11 to prevent any sticky material from fouling the chains 4, 5.
Patent GB-424329-A (GB)
Title: Improvements in or relating to heat conducting tubes
IPC: F22B37/10
Filed: 1933-08-14
Abstract: 424,329. Tubes for heat-exchangers. ELLIS, R. E., 70, Chancery Lane, London.- (Metropolitan Engineering Co.; 1250, Atlantic Avenue, Brooklyn, New York, U.S.A.) Aug. 14, 1933, No. 29760/34. Divided out of 424,063. [Class 64 (iii)] A heat - exchange tube 1 is provided with a number of twisted rod-like projections 7 united directly to the tube by separate electric resistance welds. A water tube furnace wall may be built up of these tubes, the projections extending across the space between the tubes. The tube may be of the order of four inches in diameter, and the rods may be a “ inch thick and spaced with centres ¢ inch apart. British Specifications 225,810, [Class 123 (ii)], and 386,916, and U.S.A. Specification 1,844,407 are referred to.
Patent GB-1396502-A (GB)
Title: Heat sealing
IPC: B29C65/00
Filed: 1971-06-24
Abstract: 1396502 Seaming non-metallic sheet material DRG PACKAGING Ltd 22 June 1972 [24 June 1971] 29761/71 Heading B5K [Also in Division B8] Prior to heat sealing together two surfaces coated with a heat sealable medium, these surfaces are exposed to a jet of hot air for a sufficient period and at a sufficiently high temperature to evaporate or dissipate greasy contaminents on the surfaces but not sufficient to fully activate the heat sealable medium. A heat-insulated housing 10 contains five electrical cartridge heaters 14 and a sixth similar, but longer, heater 16. An air inlet 18 leads to a transverse manifold passage 22 connected to helical conduits 24 passing around each heater 14 and a helical conduit 26 passing around the heater 16. The conduits 24 open into a chamber 28 leading to a nozzle 30 having an upstanding part 32 with apertures 34 on both sides thereof. The conduit 26 leads to a narrower nozzle 36. A water-cooled anvil 38 is mounted behind the part 32. An infinitely variable-bleeder valve 42 is provided to alter the pressure difference between the air supplied to the conducts 24 and that supplied to the conduit 26. In operation, a heat sealable coating on a carton flap 46 and a carton body 44 is exposed to very hot air, e.g. at 480-500 C., as it passes the nozzle 36 to evaporate or dissipate greasy contaminents on the surfaces to be heat sealed. As the flap 46 passes between the part 32 and the anvil 38, cooler air, e.g. at 350 C., activates the heat sealable coating. As the carton emerges from the end of the nozzle 30, the flap 46 is ploughed against the body 44 to effect the seal.
Patent GB-899474-A (GB)
Title: Improvements in or relating to electroacoustic transducers
IPC: H04R17/10
Filed: 1958-09-17
Abstract: 899,474. Piezo-electric instruments. MASSA, F. Sept. 17, 1958 [Sept. 17, 1957], No. 29824/58. Class 40 (4). [Also in Group XL (b)] A piezo-electric microphone or receiver which operates at audio or ultrasonic frequencies comprises a flat piezo-electric bender element having one face bonded to a flexible biasing plate with a first electrode disposed between the plate and the element, and a pair of further electrodes on the opposite face of the element connected to respective leads, the element being pre-polarized in one sense between the first electrode and one of the pair of electrodes, and in the opposite sense between the first electrode and the other of the pair of electrodes. The piezo-electric element comprises barium titanate or lead metaniobate in the form of a disc 3, and has either a single electrode 28, Figs. 8 and 9, on one face and double electrodes 31, 32 on the other face, or the two faces have two and four electrodes 31, 32 and 34, 35, 36, 37, Figs. 9, 12 and 13, respectively. The electrodes 35, 36 are linked by a conductive portion 38, and the pre-polarization circuits are shown in Figs. 10 and 14. A transducer of the kind shown in Fig. 8 is used in a microphone or receiver T, Fig. 2, the surface of the piezo-electric element associated with a single electrode being secured by cement 2 to a sound-receiving or radiating plate 1, which also functions as a biasing plate. The transducer is enclosed in a housing 13 by securing the plate 1 with cement 14. Electrical connections to the electrode pair 31, 32 are effected by the twin conductors 11 of a screened cable which passes through an opening in the housing and is sealed by waterproofing 15. The transducer shown in Figs. 9, 12 and 13 is used in an alternative embodiment, Fig. 4, in which a biasing plate 30 is secured by cement 2 to the element face having the fewer electrodes 31, 32. The transducer assembly is mounted in a housing 16 between a cork ring 17 and a foam rubber ring 24, the outer edge of the housing base being crimped over an end plate 20. A metallic screen 21 permits the passage of sound waves into the housing. A concentric cable 25 provides connections in this case to two electrodes 34, 37 in the four-electrode groups; and the resonant frequency of the transducer is lowered by a small weight 23 cemented to the biasing plate 30. The biasing plate enables the transducer to operate in a bending mode and is made of aluminium, nickel or copper with a thickness equal to or exceeding that of the piezo-electric element. The Specification refers to known two-electrode piezo-electric elements, Figs. 5 and 6 (not shown), using X-cut quartz, L-cut ammonium dihydrogen phosphate and Y-cut lithium sulphate, and the use of slated or evaporated electrodes of silver, gold and copper.
Patent GB-813893-A (GB)
Title: Improvements in or relating to therapeutic compositions containing calcium acid novobiocin
IPC: A61K33/06
Filed: 1957-09-23
Abstract: A therapeutic composition comprises as its essential active ingredient calcium acid novobiocin (monocalcium novobiocin) and as a primary surfactant therefor, a water-soluble, pharmaceutically acceptable salt of lauryl sulphuric acid, dispersed in an aqueous vehicle.  Specified salts are the aluminium, ammonium, calcium, magnesium, potassium and sodium, the latter being preferred.  A secondary surfactant (long list provided) should be incorporated to reduce foaming.  Examples disclose compositions containing in addition to the antibiotic and primary surfactant, methyl paraben, propyl paraben, sorbitan trioleate, polyoxyethylene sorbitan trioleate, tragacanth and sugar.
Patent GB-514074-A (GB)
Title: Electric filter arrangements
IPC: H04B1/52
Filed: 1938-10-14
Abstract: 514,074. Distributing music etc; impedance networks. LORENZ AKT.-GES., C. Oct. 14, 1938, No. 29841. Convention date, Oct. 19, 1937. [Class 40 (iv)] [Also in Group XL] In a composite high and low pass filter particularly for use in systems for distributing radio-frequency programmes over the telephone network, the high pass filter comprises a transformer with one or more condensers in series with one or both windings. In the arrangement' shown in the Figure, a telephone line A, B is connected over a low pass filter 2 to a telephone subscriber's set 4 and over a high pass filter 1 to a radio frequency receiver 3. The high pass filter comprises a transformer 16 having split windings with interposed condensers 17, 18. In modifications, condensers may be connected at each end of both windings, at one end of each winding or at one end of the primary winding only, the capacity to ground of the condenser or condensers in the asymmetrical arrangements being compensated by the capacity to ground of the winding or windings of the transformer.
Patent GB-723726-A (GB)
Title: Improvements in and relating to air-cooled spark plugs
Inventor: VANRY WILLIAM HENDRICK
IPC: H01T13/16
Filed: 1952-11-26
Abstract: 723,726. Sparking plugs. BOEING AIRPLANE CO. Nov. 26, 1952, No. 29969/52. Class 7 (4). In a sparking plug for a continuous-combustion engine, such as a gas turbine, having a cooling air duct 36 adjacent to its combustion chamber 34, the plug comprising an annular body 10 that extends across the duct 36 to project the electrode end into the chamber 34, a tubular centre-electrode 16 co-acting with an earth electrode 20, an insulator 18, an aperture 40 in the body 10 facing against the air stream in the duct 36, and the electrode 16 having an aperture in alignment with the aperture 40 for entrance of cooling air by ram effect into the centre electrode, the ignition end of the latter is open to enable the air to flow through the electrode into the chamber 34. The plug casing 10, which is secured to the outer combustion-chamber wall 30 by a flange 22 and bolts 26, passes across the duct 36 and terminates level with or just beyond the flame tube 32 whilst the insulator 18 and centre electrode 16 extend into the combustion chamber 34, as does the earth electrode 20. An opening 42, smaller than aperture 40 but in alignment therewith, is incorporated in the insulator 18. Part of the air entering the aperture 40 flows into the chamber 34 through both the hollow electrode 16 and the space 38 between the insulator and casing thus cooling the plug and preventing fuel-laden air from entering space 38. The earthed electrode may be cooled by air from space 38 and electrode 16 or as shown, it may comprise a tubular element communicating with a further opening 44 in the casing 10 ; the electrode 20 may be shortened to enable the cooling air emerging therefrom to impinge upon the centre electrode 16.
Patent GB-520343-A (GB)
Title: Improvements in and relating to the attachment of insulating or like sheets to the purlins or like members of walls, roofs or partitions
IPC: E04B9/24
Filed: 1938-10-18
Abstract: 520,343. Roofs; walls. INKLEY, B. Oct. 18, 1938, No. 30163. [Class 20 (iv)] The roof, wall or partition assembly described in Specification 478,439 is modified by arranging that the metal bars 1 for supporting the sheets 3 between an inner casing 5 and purlins 4 are of H-crosssection to provide channels for receiving the edges of the sheets, as shown in Fig. 1. The metal bar 1 may be built up of two channels bolted together, or it may be.of one-piece form, in which case it may be provided with a medial extension 7. The bar may also be of inverted-T cross-section having lugs 8 punched out at intervals, as shown in Fig. 6. The lower flanges of the bar may be provided with bent-out lugs adapted to engage the purlin. Instead of the purlin 4 being arranged immediately behind the aligned points in the sheets 4, as described in Specification 478,439, metal sections of flat or T-cross-section may be disposed behind these joints and supported by the bars 1.
Patent GB-307527-A (GB)
Title: Improvements in frames for windows, skylights and the like
IPC: E04D13/03
Filed: 1927-11-10
Abstract: 307,527. Feverley, R. St. L. Nov. 10, 1927. Skylights; window frames.-A gutter or channel f is provided on the underside of a window or skylight frame and inside the rib at the bottom of the frame to collect condensed water from the inside or underside of the glass. The gutter is formed integrally with the ribs a and an interior flange e supports the glass, and suitably-shaped exterior flanges b, c rest on the roof. The glass supporting flange may be formed in a plane oblique to the exterior flanges so that the glass may project over the gutter and adjacent flange to form eaves. The ribs a extend across the flange c and are formed with glass retaining lugs h. Holes g in the rib leal the water to the outside flange.
Patent GB-1113329-A (GB)
Title: Hydrostabilizer
Inventor: DOUGLAS DONALD W
IPC: B63B39/06
Filed: 1966-07-05
Abstract: 1,113,329. Stabilizing boats. DOUGLAS AIRCRAFT CO. Inc. 5 July, 1966, No. 30203/66. Headings B7A and B7M. A hydrostabilizer 24 having a body 78 to which is attached a pair of hydrofoils 80 near its forward end and a stabilizing fin assembly 82 near its after end, is suspended from the boom 28 of a boat by two wires 34a and 34b, the directions of which in the vertical position respectively intersect the longitudinal axis of the body 78 forward and aft of the centre of gravity of the hydrostabilizer 24. The stabilizer system for the boat consists of a hydrostabilizer mounted on each side of the boat and each may be wound in or out on reels such as 48a, 48b. The booms are raised to vertical positions when the stabilizer system is not being used.
Patent GB-1311910-A (GB)
Title: Nozzle
IPC: B01J8/00
Filed: 1970-06-22
Abstract: 1311910 Powder treatment nozzle NESTLE'S PRODUCTS Ltd 22 June 1970 [20 June 1969] 30237/70 Heading B2F Powder is agglomerated, the average particle size being increased, by passing the powder through a nozzle in which it is treated with jets of steam supplied from a steam chamber 33 via annular outlets formed between concentric sleeves 36, 37, 38, 39 and 44a and the part 30 of the nozzle housing, these sleeves forming the outwardly flowing outlet of the nozzle, steam being supplied to the annular outlets through holes 42 in collars 36a, 37a, 38a and 39a supporting the sleeves 36, 37, 38 and 39. Steam is also supplied through duct 47. Another embodiment (Fig. 1, not shown) has only one collar and sleeve and two steam jets. Powders to be treated include such as coffee and tea extracts, powdered beverage compositions containing, e.g. sugar, cocoa and optionally milk solids, and flourbased soup and sauce mixes.
Patent GB-1016471-A (GB)
Title: Improved developer for electrostatic images
IPC: G03G9/13
Filed: 1962-08-07
Abstract: 1,016,471. Developer for electrostatic images. RESEARCH LABORATORIES OF AUSTRALIA Ltd. August 7,1962 [Aug. 14,1961], No. 30276/62. Heading G2H. An electrostatic image developer comprises pigment particles and cellulosic polymer particles suspended in a non-polar electrically insulating hydrocarbon or halogenated hydrocarbon carrier liquid which is a non-solvent for the cellulosic polymer and which has a volume resistivity greater than 10 ohm. cm. and a dielectric constant less than 3, the cellulosic polymer particles being present in a proportion of 15-100 parts by weight to 100 parts by weight of pigment. The developer is made by dissolving the cellulosic polymer e.g. ethyl cellulose or ethyl hydroxyethyl cellulose, or a non-polar hydrocarbon solvent having a KB value greater than 90, and miscible with said carrier liquid, mixing this solution with the pigment to form a paste, and then mixing the paste with the said carrier liquid. Specified carrier liquids are perchloroethylene, n-heptane, n-hexane and cyclohexane. The paste may also contain oils, varnishes and resins e.g. silicone resin.
Patent GB-701867-A (GB)
Title: Improvements in or relating to cathode ray tubes
IPC: H01J29/86
Filed: 1951-12-28
Abstract: 701,867. Cathode-ray tubes. RAULAND CORPORATION. Dec. 28, 1951 [Dec. 29, 1950], No. 30284/51. Class 39(1) In a cathode-ray tube of the kind having a metal cone forming part of the envelope, the metal cone member is specially shaped to permit the formation of a metal backing layer for the fluorescent screen by the process described in Specification 645,633. In the embodiment shown the metal cone member 10 is formed at one end with an aperture 11 bounded by an inturned flange 12 which is sealed to a cylindrical glass neck 13 containing the electron gun of the tube. The other end of the cone is formed with an aperture 14 bounded by an outwardly directed flange 15 to which a glass face plate 16 for supporting the fluorescent screen is sealed. The process of forming the metal backing layer for the screen comprises spreading a solution of a synthetic resin and a plasticizer on the surface of a cushioning liquid and allowing a thin volatizable organic film to solidify, after which the cushioning liquid is decanted to permit the solidified film to lay evenly over the fluorescent screen. The metal layer is formed on the organic film and the film then removed by volatilization. The cone member 10 is shaped to provide a cylindrical portion 17 enclosing a transverse area substantially equal to that of the aperture 14. Hence, when the cushioning liquid is placed in the tube the surface of the cushioning liquid will have an area substantially equal to that of the screen surface on which the organic film is to be deposited. The solvent may be allowed to evaporate before decanting the cushioning liquid and the solidified organic film can be deposited directly over the fluorescent screen without tending to tear or stretch. The portion 17 of the cone member need not be exactly cylindrical and in an alternative construction corresponds to a frustum of a cone having an apex angle of not more than 10 degrees. Satisfactory results may also be obtained if the transverse area surrounded by the portion 17 is slightly greater than that of the aperture 14. The invention is also applicable to the so-called rectangular cones.
Patent GB-377856-A (GB)
Title: Improvements in or relating to shuttles for automatic looms
IPC: D03J5/24
Filed: 1931-11-02
Abstract: 377,856. Loom shuttles. PUJOL, A. T., San Feliu de Codinas, Barcelona, Spain. Nov. 2, 1931, No. 30329. [Class 142 (iii).] On the first pick of a self-threading shuttle, the weft passes into a longitudinal guide groove 4 and a contiguous groove 2 extending to the side of the shuttle, rests on guide pins 8, 9 and beneath the curved end of a pin 10 across the groove 4, and passes beneath the curved end of a pin 1 extending into a recess 3 in the groove 2. On the next pick, the weft is guided around the pin 3 into a groove 5 intersecting the groove 2 and leading to the shuttle eye 7, and is retained by the end of a downwardly projecting pin 11. Pins 13, 14 are provided to protect the wood of the shuttle at the eye, and a pin 12 protects the wood at the intersection of the grooves 4, 5. All the guide pins project inwardly into the shuttle body. In modifications, the pin 1 is replaced by a metal plate or wire secured on the curved surface 6 of the shuttle.
Patent GB-617654-A (GB)
Title: Improvements in or relating to high frequency coupling devices
IPC: H01F38/14
Filed: 1946-10-10
Abstract: 617,654. Induction heating. BRITISH INSULATED CALLENDER'S CABLES, Ltd., RADIO GRAMOPHONE DEVELOPMENT CO., Ltd., and COURT, E. T. Oct. 10, 1946, No. 30331. [Class 39 (iii)] [Also in Group XXXV] A high frequency transformer for induction heating plant, such as is used for soldering cans comprises two windings, one an open spiral 1 and the other one or two discs 2, 3 each with a radial slot, lying in planes parallel to the plane of the spiral [see Group XXXV]. The discs may be joined by a metal hub 6 having a slot tallying with the disc slots, and also at the outer edge. A work coil may be connected to upstanding ribs 10, 11 at the edges of the slot in disc 2, and the spiral winding 1 may be connected to the anode and grid of an oscillating valve by terminals 9 passing through the slot in disc 3. To vary the matching characteristic one connection to the spiral may be made through a wheel made to roll along it, Fig. 12 (not shown). Fig. 10 shows a transformer 5, placed horizontally below a table 52 through a hole in which work can be passed into the hub 50 which forms the work coil.
Patent GB-602966-A (GB)
Title: Improvements in or relating to gas blast circuit-breakers having disconnection resistances
IPC: H01H33/16
Filed: 1945-11-13
Abstract: 602,966. Gas-blast circuit-breakers. MASCHINENFABRIK OERLIKON. Nov. 13, 1945, No. 30373. Convention date, Nov. 20, 1944. [Class 38 (v)] In a gas-blast circuitbreaker, a resistance 10 surrounding an insulating cylinder 9 is connected between a main movable contact 1 and a fixed ring contact 6, so as to be in series with the returning- voltage arc between a movable counter-contact 3, and the contact 6. The main contact 1 is opened rapidly against a spring 5 by gas admitted between insulating cylinders 11, 13, and exhausted through the hollow contacts 1, 3. The countercontact 3 is moved more slowly by a piston (not shown) in the cylinder 15, so that it reaches a position 3<1>, where the arc is extinguished, and finally proceeds to position 3<11>in which it remains to provide an isolating break. The contact 1 may alternatively be opened and closed by compressed gas supplied through a special control pipe.