baber/WOPTO huggingface dataset:
Patent GB-1470207-A (GB)
Title: Method and apparatus for drying lead accumulator plates
IPC: F26B3/34
Filed: 1974-09-23
Abstract: 1470207 Drying accumulator plates VARTA BATTERIE AG 23 Sept 1974 [24 Sept 1973] 41348/74 Heading F4G [Also in Divisions H1 and H5] Accumulator plates are dried by passing them continuously through a drying tunnel provided with a heating inductor arranged to produce magnetic flux at right angles to the plate surfaces. The accumulator plate grid is inductively heated and in turn heats the active mass. The surface of the plates may be additionally heated by hot air or gas introduced to the tunnel. The tunnel may be of rectangular cross-section or of U or inverted U-section. A plurality of C-shaped heating inductors spaced longitudinally of the tunnel produce flux transverse to the direction of conveyance and the electrode plates are mounted on holders to extend parallel to the direction of conveyance. In an alternative arrangement (Fig. 6 not shown), magnetic inductors on opposite sides of the tunnel cooperate to produce a transverse flux through the tunnel. Alternatively their poles are arranged to produce an axial flux in the tunnel (Fig. 7 not shown) in which case the plates are arranged transversely of the tunnel during conveyance therethrough. In another arrangement two axially distributed three phase windings or inductors on opposite sides of the tunnel produce linearly moving axial (Fig. 9 not shown) or transverse flux (Fig. 8 not shown) in the tunnel. In Fig. 10 (not shown) the inductor comprises a helical winding about the tunnel with a pair of magnetic flux return members. Duplex electrodes may be suspended by lugs between a pair of conveyers passing axially through the furnace. Alternatively a holder vertically rotatable between a position in which electrodes mounted thereon are parallel to the tunnel and a position in which they are transverse to the tunnel, is mounted on a conveyer belt. Alternatively a holder may be suspended from a conveyer and may pendantly support electrode plates.
Patent GB-924775-A (GB)
Title: Improvements in or relating to impregnated tungsten cathode structures and methods for fabricating same
Inventor: KOPPIUS OTTO GUSTAV
IPC: H01J9/04
Filed: 1961-11-21
Abstract: A method of producing a dispenser cathode comprises the steps of compacting tungsten particles, e.g. at 2000 p.s.i., sintering, e.g. to 80-88% theoretical density, impregnating the porous body with a plastic which is readily polymerizable and depolymerizable, e.g. methyl methacrylate or polystyrene, machining the body so formed, depolymerizing the plastic filler at a temperature below the sintering temperature, e.g. 1000 DEG  C., and then impregnating the blank with the emissive material.  Prior to impregnation with the plastic monomer the body is placed in a vacuum, e.g. 10-6 mm. Hg, the body being outgassed by inductive heating. The depolymerization is carried out at a pressure of 10-5-10-6 mm. Hg.  The emissive material may be .CaO.BaO.Al2O3 .3.5.2  or .1.4.1  or 5 BaO, 2 Al2O3.  These materials may be applied from fused mixtures.  U.S.A. Specification 2,669,008 is referred to.
Patent GB-1277403-A (GB)
Title: Improvements in or relating to transducers suitable for use in measuring the density of or the pressure or a pressure difference in fluids
Inventor: CURTIS IAN FRANCIS MALCOLM
IPC: G01N9/00
Filed: 1968-08-30
Abstract: 1277403 Measuring fluid density electrically SOLARTRON ELECTRONIC GROUP Ltd 25 Aug 1969 [30 Aug 1968] 41645/68 Heading G1N [Also in Divisions G5 and H4] Apparatus for measuring the density of a fluid comprises a hollow, thin-walled ferromagnetic cylinder located in the fluid with its lower edge clamped, and means for causing the wall to vibrate radially like a bell at its natural resonant frequency, which is indicative of the fluid density. As shown Fig. 1 the cylinder 11 has a stepped flange 19, 20 at its lower end which is clamped to a base member 12, in turn clamped to a base flange 15. Inside the cylinder are drive coil 16 and pick-up coil 17 embedded in perpendicular relationship in a block 27 of epoxy resin and supported on base members 12 so that the coils are located at antinodal positions of the cylinder vibrations. The cylinder 11 has a thickened ring 26 at its upper end to define a nodal position and is surrounded by a magnetic shield 25. The small overlap between flanged parts 19, 20 is basically flexible and forms a circular hinge for the transducer assembly. The test fluid enters via inlet 23, flows over both sides of the wall 18 and exits via outlet 24. The coils 16, 17 are connected via a plug and socket arrangement 29 to a transistor amplifier which maintains oscillation at the natural resonant frequency, measured and indicated on external apparatus. In a modification Fig. 2 (not shown), an inlet and outlet filter are assembled in the fluid-flow path. In another embodiment Fig.5 (not shown) the upper end of the cylinder 11 is closed by a solid plate, enabling the transducer to measure fluid pressure or pressure difference.
Patent GB-1406839-A (GB)
Title: Method for eliminating organic and inorganic bound nitrogen from domestic and industrial waste water
Inventor: DUBACH M
IPC: C02F3/30
Filed: 1972-09-08
Abstract: 1406839 Biological purification process CELLULOSE ATTISHOLZ AG 8 Sept 1972 [23 Nov 1971] 41687/72 Heading C1C In an activated sludge process in a plant comprising, as a first stage, an aeration tank 1 and a settling tank 3 and, as a second stage, an aeration tank 6 and a settling tank 7, and in which nitrified liquid is recycled from the settling tank 7 to the first stage, the liquid fed to the first stage by supply line 12 and recycling line 17 is subjected to ammonification and denitrification, and the liquid fed to the second stage by line 5 and which is free of oxygen, is subjected to nitrification. The recycled liquid may be returned to tank 1 or 2, or conduit 2. Settled sludge is returned from tanks 3, 7 to tanks 1, 6 respectively by respective lines 13, 14. Floating sludge may be returned by line 19 from tank 3 to tank 1. The sludge discharged from tank 3 may be degassed and concentrated (e.g. by flotation). Aluminium and iron salts may be added through line 20 to remove phosphates. Flocculants such as bentonite and cellulose may be added to the second stage to aid settling.
Patent GB-1006413-A (GB)
Title: Salts of vinyl pentafluorosilicic acid
Inventor: MULLER RICHARD
IPC: C07F7/12
Filed: 1963-10-23
Abstract: Alkate-metal and ammonium salts of vinyl pentafluorosilicic acid are prepared by reacting vinyl trifluorosilane with the corresponding metal fluoride in aqueous solution.  The vinyltrifluorosilane may be generated by reacting vinyl trichlorosilane with either hydrofluoric acid or a fluoride.  In the latter case the vinyltrifluorosilane reacts with excess fluoride in situ to form the required salt. Examples (1) to (3) describe the preparation of diammonium vinyl pentafluorosilicate which is precipatated from aqeeous solution by addition of methanol or ethanol.  Examples (4) and (5) describe the preparation of dipotassium pentafluorosilicate. Uses.-Finishing and polishing glass fibres.
Patent GB-1075744-A (GB)
Title: Improvements in or relating to apparatus adapted for use in handling adhesive composition
IPC: F04C2/18
Filed: 1964-10-14
Abstract: 1,075,744. Coating apparatus. BOSTIK Ltd. Oct. 14, 1964 [Oct. 15, 1963], No. 41851/64. Addition to 980,432. Heading B2L. Apparatus for handling adhesive composition comprises a supplying device, a dispensing device, a passage extending from the supplying device to the dispensing device, and a flow control device in communication with the passage, which, when the apparatus is in use maintains the pressure of fluid adhesive composition in the passage adjacent the dispensing device substantially constant, the dispensing device being adapted to feed adhesive composition from the passage at an adjustable rate variable between a maximum and a minimum value. Preferably the maximum feed rate of the dispensing device is slightly less that the rate at which the supplying device operates. In the embodiment shown rod R of thermoplastic adhesive composition is fed by gear wheels 36, 38 from a supply reel (not shown) into inlet bore 33 of casing 34 of the supplying device 38. The rod R is drawn in by rotation of disc 30 and the casing 34 is heated so that the adhesive composition is melted and is then fed by a pumping action of disc 30 through discharge bore 59 into passage 60 where it flows past a one-way valve 80. The bore 60 is in an extension piece 78 and has communicating therewith a further bore 76 in which operates a piston 102 loaded by a weight 112 (not shown). This arrangement provides a flow control device in that the piston 102 maintains the adhesive in bore 76 under a constant pressure and the piston moves in response to supply and demand of adhesive between an upper position when the arm 105 on the piston rod engages the plunger 120 of a micro-switch 116 to thereby disengage the supplying device 28 from its driving means, and a lower position in which arm 106 engages plunger 122 to re-engage the motor drive to supplying device 28. The said control device ensures that the adhesive composition in the passage 60 is maintained at a substantially constant, in excess of atmospheric, pressure as determined by the weight on piston 102. The liquid adhesive composition is dispensed from the passage 60 by gear wheels 82 and 84 driven from a motor the speed of which can be adjusted by the setting of a resistance in the motor circuit either by hand or automatically from a parent machine thereby correlating the rate of dispensing adhesive with the speed of operation of the machine. The adhesive is thus fed via pipe 26 to a suitable applying nozzle. The casing 34, extension piece 78, the pump housing and the pipe 26 are all heated and thermostatically controlled to maintain the adhesive at the required temperature.
Patent GB-964600-A (GB)
Title: Frequency discriminator
IPC: H03D13/00
Filed: 1961-11-23
Abstract: 964,600. Frequency and phase discriminators. BENDIX CORPORATION. Nov. 23, 1961 [Dec. 1, 1960], No. 42005/61. Drawings to Specification. Heading H3A. A sine wave or relaxation oscillator locks in with and follows the frequency variations of an incoming signal due to a retro-active loop extracting any D.C. component in the oscillator output waveform and after amplifying, applying it through a purely resistive path to the oscillator input along with the incoming signal. The D.C. component output is therefore a measure of the frequency deviation of the input from the natural frequency of the oscillator; or, if the incoming frequency is equal to the natural frequency of the oscillator, of the phase difference between the oscillations. The oscillator may be a transistor multivibrator whose opposite polarity half-cycles are made unequal by the incoming signal and detected by a collector circuit low-pass filter, and after amplifying in a D.C. amplifier applied through a resistor to the base of one transistor to which also through a resistor the incoming signal is applied. Alternatively it may be a transistor sine wave oscillator.
Patent GB-865130-A (GB)
Title: Screw jack
Inventor: WALFORD JOHN ARNOLD
IPC: B66F3/08
Filed: 1958-12-30
Abstract: 865,130. Screw-jacks. SHELLLY Ltd., R. T. Dec. 8, 1959 [Dec. 30, 1958; Feb. 24, 1959], Nos. 42033/58 and 6276/59. Class 78 (3). A lifting-jack for vehicles comprises a screw 12 rotatably mounted in a pillar 10 provided with guide-channels 11 for rollers 27 journalled on trunnions on a nut 23 to which is pivoted a load-engaging arm 24 adapted to engage in a socket on the vehicle. The lower end of the screw is supported by a rotatable ball 21. A plate 19 is formed with a cranked extension 28 to hold the load-engaging arm parallel to the pillar for storing the jack. The screw is rotated by means of a handle 20 through bevel-wheels 13, 14. In a modification (not shown), the rollers 27 are omitted and the guide-channels 11 engage the trunnions. Pips (not shown) are provided on the base of the jack to prevent slipping.
Patent GB-1516010-A (GB)
Title: Flash and camera device
IPC: G03B7/16
Filed: 1976-10-11
Abstract: 1516010 Camera shutter and flash control WEST ELECTRIC CO Ltd 11 Oct 1976 [15 Oct 1975] 42134/76 Heading G2A A camera shutter and flash control circuit comprises (a) a flash tube 4 having a storage capacitor 3 chargeable by a D.C.-D.C. converter 2 connectable to a battery 1 by a switch 20 (b) a photosensing circuit 11 for daylight exposure and a photosensing circuit 15 for flash exposure (c) a switching circuit 10 selectively connectable to the photosensing circuits by a switch 21 (d) a shutter closing electromagnet 9 and a flash tube quenching element 7 operated by the switching circuit 10 (e) a coupling between switches 20 to 21 so that when the D.C.-D.C. converter 2 is connected to the battery 1 by switch 20, the flash photosensing circuit 15 is connected to the switching circuit 10 by switch 21; and when the D.C.-D.C. converter is disconnected from the battery, the daylight photosensing circuit 11 is connected to the switching circuit 10. Daylight circuit 11 comprises a slow response photo-conductor 12 and an integrating capacitor 13; flash circuit 15 comprises a fast response photo-transistor 16 and an integrating capacitor 17. The quench element 7 may be in series or parallel with tube 4.
Patent GB-422095-A (GB)
Abstract: 422,095. Cooling rear engines on motor vehicles. DAIMLER-BENZ AKT.- GES., 50, Unter den Linden, Berlin. March 22, 1934, No. 9056. Convention date, March 22, 1933. [Class 79 (iii)] An engine-cooling arrangement for a motorvehicle with a rearwardly disposed engine c, comprises air admission louvres or openings d in the side walls of the body in front of the engine space and laterally of the interior of the body, passages e, f being provided leading the air to the engine, either through a radiator g or directly to an air-cooled engine enclosed by a jacket &c. The louvres d are located beneath the rear side windows leading into passages embodied in the construction of the arm rests of the rear seats b, the walls between the cooling passages e, f, and the interior of the vehicle being double and heated from the engine or rendered heat insulating. The engine space is covered by a bonnet i formed with a strong central rib k by which it is hinged to the body. Air outlet slits m, n may be provided in the bonnet and body part respectively.
Patent GB-1064327-A (GB)
Title: Improvements relating to an electric meter
Inventor: ECKETT SIDNEY WALLACE
IPC: G01R1/38
Filed: 1962-11-09
Abstract: 1,064,327. Moving coil meters. NALDER BROS. and THOMPSON Ltd. Oct.24, 1963 [Nov. 9, 1962], No.42450/62. Heading G1Q. In a moving coil meter, an auxiliary polepiece modifies the air gap in which the coil moves. As shown, Fig. 1, in a long-scale moving coil meter of the kind disclosed in Specification 1, 001, 792, comprising a cylindrical permanent magnet 1, a generally cup-shaped polepiece 4 adhering to one flat face 5 of the magnet, and a second polepiece 2 adhering to the other flat face 3 thereof, polepiece 2 having an axially and radially extending slot 9 therein to permit the excursion of an asymmetrically pivoted coil 18 around a partannular portion 12 of polepiece 2, an auxiliary polepiece in the form of a part-annular Mumetal (R.T.M) collar 26 having a plurality of inwardly projecting teeth 27 is clamped to face 17 of polepiece 4. In use, a Mumetal element 28 on coil 18 lines up with one of teeth 27, so giving the coil a number of discrete angular positions and preventing ambiguity when a digital indicator is used, e.g. when a cup-shaped member (not shown) secured concentrically to the coil staff 19 having digits on its periphery co-operates with a window in an adjacent vertical sheet. In a modification, Figs.3 and 4 (not shown), the coil (42) pivots around the part circular head (36) of a laminated core (31) located between two magnets (29, 30), and one of two polepieces (32, 33) carries the toothed collar (26). If instead of providing discrete steps it is desired to modify the scale characteristic of the meter, a smooth collar is used to vary the spacing between itself and the element on the coil to give the required law. The coil bearings may incorporate liquid damping as disclosed in Specification 805,851, and the permanent magnets may be replaced by iron-cored electromagnets. In some cases, one or both polepieces may be stepped.
Patent GB-1234904-A (GB)
Title: Apparatus for separating aqueous suspensions of solid particles
IPC: B04C1/00
Filed: 1969-08-27
Abstract: 1,234,904. Centrifugal separators. CANADIAN PATENTS & DEVELOPMENT Ltd. 27 Aug., 1969 [28 Aug., 1968], No. 42757/69. Heading B2P. A vortex separator, Fig. 1, has a cylindrical chamber 14 having an axial length less than its diameter and bounded by a cylindrical side wall 11 and two end walls 12, 13, a vortex finder 17 extending axially through the end wall 12 and a tangential inlet 18 and a tangential outlet 19 being located adjacent the end walls 12, 13 respectively. In a plant, Fig. 3, for separating mixtures of solid particles e.g. of fine coal or ore, contained in an aqueous slurry, the slurry is pumped from a hopper 32 by a pump 33 through the inlet of the vortex separator 10. Concentrated slurry is discharged through the outlet 19 and fed to a first hydrocyclone 20 while clean water is discharged through the vortex finder 17 and is fed to a second hydrocyclone 26 with the heavy fraction discharged from the first hydrocyclone 20 from which heavies and middlings are recovered. The light fraction from the first hydrocyclone 20 is fed to a third hydrocyclone 37 for the recovery of lights and effluent. The latter, after filtering at 39, is returned with make-up water to the hopper 32. Compressed air may be supplied to the vortex of hydrocyclone 20 as indicated at 36.
Patent GB-931598-A (GB)
Title: Improvements relating to red pigmented high molecular compounds
IPC: C08K5/1545
Filed: 1959-12-17
Abstract: Perylene-3,4,9,10-tetracarboxylic acid dianhydride is used as a red pigment in drying oils, paints, lacquers, natural resins, cellulose derivatives, rubber, and synthetic plastics.  Various such materials are mentioned generally.  In specific examples it is used to pigment the following compositions:- (1) and (4) polyvinyl chloride containing dioctylphthalate, dibutyl tin dilaurate, sodium pentaoctyl tripolyphosphate and (1) titanium dioxide or (4) whiting and mineral spirits; (2) polystyrene; (3) polyethylene containing titanium dioxide; (5) a proprietary raw rubber latex crepe containing barium sulphate, whiting, lithopone, zinc oxide, paraffin wax, sulphur, a vulcanizing agent (piperidino salts of pentamethylene dithiocarbamic acid) and 2-mercapto benzimidazole; (6) urea-formaldehyde resin moulding powder; (7) a mixture of solutions of an alkyd resin derived from phthalic anhydride, glycerol and coconut oil fatty acid in xylene and of a butylated melamine-formaldehyde resin in butanol; (8) a butanol solution of a urea-formaldehyde lacquer resin diluted with chlorodiphenyl and xylene; (9) a lacquer comprising butanol, butyl acetate, a proprietary glycol ether, toluene, alcohol, nitrocellulose, a proprietary castor oil modified phthalate resin and titanium dioxide; (10) a proprietary unsaturated polyester in styrene containing a proprietary cobalt siccative which is subsequently polymerized by adding cumene hydroperoxide and ethyl and butyl acetates; and (11) a mixture of a proprietary unesterified epoxy resin and a proprietary "oil-reactive" alkyl phenol resin in xylene and diacetone alcohol.ALSO:Fine dispersions of perylene -3,4,9,10-tetracarboxylic acid dianhydride, for use as a pigment for high molecular weight organic materials are obtained (a) by precipitation from solution in sulphuric acid monohydrate, oleum, or chlorsulphonic acid by pouring into water; (b) by recrystallization from sulphuric acid or nitrobenzene; or (c) by milling in the presence of an inert salt that can be removed by solvents and, optionally, an inert organic solvent.
Patent GB-1087388-A (GB)
Title: Isocyanate containing compositions and processes for their preparation
IPC: C08G18/70
Filed: 1966-09-27
Abstract: An isocyanate composition, said to be a storage-stable liquid at above 15 DEG  C., is made by heating at 40-110 DEG  C. a mixture of a methylenebis (phenyl isocyanate), which is normally solid at 15 DEG C., with 2-10 weight percent of dipropylene glycol, and the prior or subsequent addition of 0.001-0.1 weight per cent of phosphoric acid.
Patent GB-1191708-A (GB)
Title: Process for Coupling Lower Olefins
IPC: B01J23/18
Filed: 1967-09-22
Abstract: 1,191,708. Oxydekydrocoupling catalysts. GULF RESEARCH & DEVELOPMENT CO. 22 Sept., 1967 [21 Oct., 1966; 16 Aug., 1967], No. 43246/67. Heading B1E. [Also in Divisions C1, C2 and C5] Catalysts for use in oxydehydrocoupling reactions comprise mixed or complex oxides of bismuth with one or more other oxides of metals, e.g. Ti, Nb, Ta, Zn, Si, W, Mo, Fe, Sn, Zr, V or Cr, and may be supported, e.g. on silica, silicon carbide or alpha-alumina.
Patent GB-1527003-A (GB)
Title: Equipment for testing smoke detectors
IPC: G01N21/27
Filed: 1977-10-18
Abstract: 1527003 Smoke detection test device UNITED KINGDOM ATOMIC ENERGY AUTHORITY 18 Oct 1977 [19 Oct 1976] 43360/76 Heading G1B A device for use in testing a smoke detector comprises nebulizer for producing an aerosol, means 15, 17 for introducing into the nebulizer compressed gas and a liquid 16 such as dioctyl phthalate to be nebulized, impactor 12 which may comprise metal balls 13 trapped between wire gauges 14 for removing large droplets from the aerosol, extraction means 22, 23, 24 for removing a proportion of the aerosol from the stream leaving impactor 12 and means for introducing the remainder of the aerosol into a gas stream in line 19 which in use leads to the smoke detector.
Patent GB-1059945-A (GB)
Title: Improvements in method and apparatus for gas separation by thin films or membranes
IPC: B01D19/00
Filed: 1963-11-05
Abstract: Gas mixtures are separated by diffusion through a permeable membrane consisting of a polycarbonate resin film (see Division B1), whereby an enriched gaseous product is obtained.  He or O2 may be removed from mixtures containing N2, CO2, air, natural gas and hydrocarbons, e.g. ethane and propane.  In the apparatus of the invention (Fig. 1) gas is fed in at 16 to chamber 11, which contains a permeable membrane 12 resting on a porous support 13. Feed gas is removed through 17 while gas permeating through the membrane into chamber 15 is removed by pump 18.  Multiple diffusion systems are also disclosed with means for recycling the gas to various points of the inflowing system.  In particular (Fig. 3, not shown), He is separated from natural gas using an apparatus having 9 diffusion membranes and where the diffused gas from the later diffusion stages is recycled to <FORM:1059945/C1/1> the earlier stages.  In another embodiment (Fig. 4, not shown), a mixture of He, CO2 and natural gas is separated using 8 diffusion stages two of which have silicone rubber membranes to remove CO2 from the mixture.  The membrane may be 0.03 to 1.0 mil. thick while the operating pressures may vary from 2,000 p.s.i.a. to 0.05 atmos.