baber/WOPTO huggingface dataset:
Patent GB-1447075-A (GB)
Title: Printed circuit boards
IPC: H05K3/34
Filed: 1973-11-07
Abstract: 1447075 Printed circuit boards ACCRAPOINT ARRAYS 7 Nov 1973 [7 Dec 1972] 51708/73 Heading H1R Contact regions in a printed circuit board comprise layers 28 of metal suitable for resistance welding, i.e. having a resistivity at least ten times that of copper, and layers 26 of solderable metal partially covering layers 28 so that the contact regions have solderable portions and resistance weldable portions. The resistance weldable material may be stainless steel originally applied to glass-epoxy substrate 32 as adhesively bound steel sheets. Through holes are then punched, back-etched and sensitized, and copper plated on to the steel layers and walls of the holes, optionally after a thin nickel layer has been applied to the stainless steel layer (Figs. 4, 5, 7, not shown). By masking and selective etching, the illustrated arrangement is obtained. As shown terminals 22 of component 20 are soldered into the through holes, and insulated nickel wire 24 for interconnecting contact regions is resistance welded to the steel part of the contact region. To provide more uniform resistance during welding, a layer (84) of copper under the steel layer may be provided (Fig. 11, not shown).
Patent GB-1126588-A (GB)
Title: Fetal heart transducer and method of manufacture
IPC: A61B8/00
Filed: 1965-12-07
Abstract: 1,126,588. Heart beat and bloodpressure measurement using ultrasonic doppler-transducers. J. R. RICHARDS. 7 Dec., 1965 [8 Jan., 1965], No. 51815/65. Headings A5K and A5R. [Also in Division H4] An ultrasonic doppler transducer, for use at a frequency above 3 Mc/s and responsive to reflected signals having an amplitude relative to transmitted signals of 3 x 10<SP>-7</SP>, comprises a pair of coaxial, x-cut, quartz crystals 12, 13 which are coated on both sides with gold or silver and which have respective co-axial cables 15, 14 connected to 'the rear sides thereof, a conductive support 11 for the crystals and a low-resistivity, low melting point material 10 which electrically connects the support and screens of the cables so as to electromagnetically screen the circuits of the two crystals from each other. The low m.p. material is applied as a melt during manufacture of the transducer and it may comprise a metal or a conductive epoxy resin. A silicon rubber "diaphragm" 28 protects the crystals and serves to couple the transmitting 13 and receiving 14 crystals whereby acoustic beat signals may be obtained. The leads are connected via helical springs 18, 19 to the electrodes and soldered or pressure connections may be utilised. The rear faces of the crystals and the springs are insulated from the support. The crystals are clamped only at their edges and vibrate in the thickness mode. The following clinical applications are mentioned:- detection of foetal heart beat, blood vessel movement, ballistic cardiography (two such transducers being required), remote monitoring of blood pressure e.g. an astronaut's, and drug testing using chicken embryo.
Patent GB-1386466-A (GB)
Title: Equalizer for a transmission channel
IPC: H04B3/06
Filed: 1972-11-10
Abstract: 1386466 Automatic transversal equalizers INTERNATIONAL BUSINESS MACHINES CORP 10 Nov 1972 [27 Dec 1971] 51964/72 Heading H4R  In a transversal equalizer for a transmission channel the signal incoming to the receiver is analysed to determine the unwanted interference terms and corresponding adjustments are made to the multipliers on the taps of cascaded time domain filters, each of which has as many taps as there are interference terms to be equalized. Corresponding taps in each of the cascaded time domain filters are adjusted identically in response to analysis of the incoming signal with possibly adaptive adjustment subsequent to the initial setting up. As described each time domain filter module may comprise equalizer modules as shown in Fig. 2 in cascade, with the two inputs fed in parallel with the equalizer input in the first module and the output from the adding network 14 of the last module providing the equalized output. In Fig. 2 the block 16 is a delay equal to the time period of interference preceding the main or desired pulse, e.g. extending over M sampling periods T while the block 12 represents a transversal filter with M+N delay sections, M equal the number of prepulse interference terms and N the number of post pulse interference terms, with multipliers and adding networks DF. Alternatively the positions of the delay 16 and transversal filter 12 can be interchanged Fig. 3 (not shown). Further alternative forms of the equalizer according to the invention include a recursive transversal filter module Fig. 4A followed by a number of modules of the form shown in Fig. 4B, or of similar form with the filter 18 and the plain delay 16 interchanged, Fig. 5 (not shown). The filter 18 is a combination recursive filter, including multipliers and adder T, and a non-recursive filter using multipliers and adder DP. The settings of the tap multipliers are derived initially by transmitting a series of isolated test pulses and averaging the received signal in the summing and control register of Fig. 6 from which the average system response is determined to provide the tap multiplier settings for all the stages of the equalizer. Subsequently the multiplier settings can be derived adaptively, using a correlation technique by comparison of a synthesized received signal provided by the transversal filter 28 Fig. 7 with the actual received signal, suitably delayed, in error detector 30, and correlation of the error with the filter 28 tap signals.
Patent GB-1137663-A (GB)
Title: Oxidation catalysts and methods for their preparation
Inventor: BRESSAT RENE
IPC: B01J31/04
Filed: 1965-12-08
Abstract: 1,137,663. U-Th oxide catalyst for CO combustion. COMMISSARIAT A L'ENERGIE ATOMIQUE. 8 Dec., 1965 [8 Dec., 1964; 8 Jan., 1965], No. 51985/65. Heading C1A. [Also in Divisions B1 and F1] An oxidation catalyst consists of a mixed oxide of thorium and of uranium of formula U x TH 1-x O 2+y  where x is less than 0À35, y is 0 to 0À3, and has surface area 20 to 30 sq. metres/g., and a facecentred cubic lattice parameter in the range 5À55A to 5À59A. The catalyst is made by forming either a complex oxalate of ammonium, uranium and thorium or a mixed oxalate of uranium and thorium and heating the complex or mixed oxalate at a temperature in the range 400‹ to 500‹ C. The catalyst is used to oxidize CO with O 2  to CO 2 .
Patent GB-1532438-A (GB)
Title: Process for heating steel powder compacts
IPC: C21D3/00
Filed: 1975-12-22
Abstract: 1532438 Sintering steel compacts KOBE STEEL Ltd 22 Dec 1975 [28 Dec 1974]  52387/75 Heading C7D Steel powder compacts are sintered in an atmosphere comprising a primary gas containing # 80 vol % inert gas (e.g. N 2 ), the remainder reducing gas (e.g. H 2 , CO) and impurities, and a secondary gas comprising a paraffin of 0À1-5À0% by volume of the volume of the primary gas, to decrease the residual oxygen concentration without decarburizing the compacts. Preferred paraffins are methane, ethane, propane and butane. In the Example, an atomized alloy steel powder (2% Ni, 0À5% Mo, bal Fe) is mixed with 0À32% graphite powder, compacted, and sintered in an atmosphere containing N 2 , CO, H 2  and CH 4 . The compact was then forged to 99À8% density.
Patent GB-1392428-A (GB)
Title: Vehicle position-deterining systems
IPC: G01S5/06
Filed: 1973-11-13
Abstract: 1392428 Radio navigation SIEMENS AG 13 Nov 1973 [20 Nov 1972] 52556/73 Addition to 1362343 Heading H4D If the vehicle FZ in the vehicle position determined system described in Specification 1,362,343 is substantially outside the area approximately bounded by the receiving stations E1, E2, E3, &c. the isophase hyperboli will intercept at such acute angles that a large position error will be possible. To obviate this state the present Specification proposes that the area in which the vehicle may be found shall be well defined and that the receiving stations shall be arranged substantially on the perimeter of this area. The three receiving stations may be arranged as an equilateral triangle, Fig. 1 (not shown), or six receiver stations may be arranged in a circle, Fig. 2 (not shown). In each of these cases the area of surveillance is circular within the triangle or circle. If the area to be covered is elongated, e.g. Gl, Fig. 3, the area can be divided up into a plurality of hexagonal areas abutting in honeycomb fashion. Each cell of the honeycomb being formed by a hexagonal arrangement of six receiver stations with adjacent cells, e.g. A21, A22 sharing receiver stations, e.g. E22, E23. Each cell has its own central station S1-S5. If the vehicle FZ is on the boundary between two adjacent cells, a suitable new area, e.g. A26, may be synthesized by using the signals as received by a set of receiving stations taken from adjacent cells, e.g. E28, E37, E39, E40 and E32. To overcome reflections from aircraft or rooftops the receiving aerials may be highly directional in the vertical plane, Fig. 4 (not shown). Said directivity also increases the sensitivity of the receiver without having to increase the power of the transmitter on the vehicle. Each receiving station may have three receivers R11, R12, R13, Fig. 5, receiving on respective differently directed and overlapping lobes EB11, EB12, EB13 together extending over 180 degrees in azimuth. To extend the diameter D<SP>1</SP> of the area to beyond the range D of any single one receiving station, a plurality, e.g. three, receiving stations E49, E50, E51, Fig. 6, may be arranged substantially in the middle of a circular array of, e.g. eight receiving stations E41-E48 whereby the vehicle FZ is always within receiving range of at least three of the receiving stations. The calling station may have an omnidirectional dual dipole aerial, Fig. 8 (not shown).
Patent GB-1248643-A (GB)
Title: Improvements in or relating to double-walled transport containers
IPC: F17C13/08
Filed: 1969-10-28
Abstract: 1,248,643. Liquefied gas storage containers. MESSER GRIESHEIM G.m.b.H. 28 Oct., 1969 [29 Oct., 1968], No. 52810/69. Heading F4P. A double walled transport container for liquefied gases has a cylindrical inner vessel 1 enclosed by a part cylindrical shell 2 and a support plate 3, the vessel being supported on the plate by tubular members 6. A reinforcing ring 7 is welded on to the vessel 1 at the point of contact of the members, and cross bars 8 extend across the tank to further support the points of contact. The vessel is vacuum insulated, and the members 6 are packed with insulating material.
Patent GB-1128810-A (GB)
Title: Improvements in and relating to electric brush holders
IPC: H01R39/40
Filed: 1965-12-14
Abstract: 1,128,810. Brush-holders for dynamo-electric machines. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 14 Dec., 1965 [17 Dec., 1964], No. 53017/65. Heading H2A. A brush-holder comprises an insulating casing 1 carrying a brush 4 biased by two opposed torsional springs 19, 20 each comprising a number of coaxial turns and having adjacent free ends 24, 25, their other ends being secured together and arranged so that the free ends 24, 25 of the springs are aligned with the brush axis. As described, the free end 24 of spring 19 engages a rectangular plate 6 having a tag 7 located in a recess 12 in the housing 1 for engagement with a socket (13) on the end of the connecting lead which is passed through an aperture (not shown) in the side of the casing 1.
Patent GB-1520840-A (GB)
Title: Gas discharge lasers and control circuits therefor
IPC: H01S3/097
Filed: 1976-12-22
Abstract: 1520840 Gas lasers COHERENT Inc 22 Dec 1976 [2 Jan 1976] 53540/76 Heading H1C A gas laser is supplied by the series combination of a first D.C. power source 24 and a second, low current, D.C. source 28, the latter being in parallel with a diode circuit arrangement 32-36. The high voltage (35 KV) and low current required for initiating operation of the laser are provided by the series combination of 24 and 28, diode 32 at this stage being non- conductive. Once laser action starts, the high current drawn (50 mA) reduces the voltage across terminals 26 and 30 to virtually zero. Hence diode 32 becomes conductive, source 28 is bypassed and the lower voltage (25 kV) needed to maintain laser action is provided solely by source 24.
Patent GB-1069820-A (GB)
Title: Tuberculostatic compounds
Inventor: GABERT ANTON
IPC: C08B37/02
Filed: 1965-12-21
Abstract: Water-soluble salts of oxydextran isonicotinoyl hydrazone are made by reacting oxydextran (dialdehyde dextran) in an aqueous medium with isoniazide in a molar ratio of 1:1 to 1:6 (basic mol. of oxydextran:mol. isoniazide) and dissolving the resulting water-insoluble hydrazone in a not dilute mineral acid at about 30 DEG  C. to give a water-soluble salt. Specified salts are hydrochloride and sulphate. Hydrazone formation may be carried out at ambient temperature, and the product may be purified by precipitation and washing with methanol before dissolving in dilute acid hydrochloric or sulphuric acid to form the salt, which may be isolated by precipitation from the reaction mixture with acetone or methanol. The compounds are used as tuberculostatics.ALSO:Parenterally-administered tuberculostatics of low toxicity which provide an isoniazide blood level lying within the therapeutic range over a long period of time comprise water-soluble salts of oxydextran isonicotinoyl hydrazone.  The salts may be hydrochloride or sulphate.
Patent GB-1320743-A (GB)
Title: Bank-note validator and the like
IPC: G07D7/00
Filed: 1970-11-17
Abstract: 1320743 Banknote validator ALLMANNA SVENSKA ELEKTRISKA AB 17 Nov 1970 [18 Nov 1969] 54539/70 Heading G4X [Also in Division G1] A validator for checking the authenticity of banknotes, cheques or like documents which have an ornamented surface i.e. areas of differing thickness, comprises two measuring members 17, 18 movable in relation to each other, between which at least a part 20 of the document 19 may be clamped, and a measuring device 21, 22 carried on one of the measuring members which gives an output signal representative of the height D of the ornamentation. The signal is preferably taken out through a single contact arm 23 movable between a pair of adjustable contacts. A second measuring device 24 may be provided for measuring the actual thickness t of the clamped part 20 of the document, the document being fed to a collection point when signals from both measuring devices fall within certain respective limits. A closure member may be provided in the inlet slot and arranged to block the measuring functions when in an open position. Several measuring devices 21, 22 may be provided for different areas of a document and the validator may also incorporate optical detectors.
Patent GB-1336855-A (GB)
Title: Apparatus for carrying out gas phase processes
IPC: C01C1/04
Filed: 1970-11-18
Abstract: 1336855 Expansible pipe joints FRIEDRICH UHDE GmbH 18 Nov 1970 [18 Nov 1969] 54824/70 Heading F2G [Also in Division B1] A first pipe, central of a catalyst bed, is coupled to a second pipe, extending freely through the base of a heat exchanger above the bed, by a bellows section under a longitudinal compressive stress, the expansion of the section being limited and a gas-tight seal being provided between the exterior of the second pipe and the base of the heat-exchanger. Successive heat exchangers 3, 13 of a gas phase reactor are connected by the pipes 1 and 8 passing through the catalyst bed 4 and the upper exchanger baseplate 12. The bellows section 5 is enclosed by a shell 6 welded to the first pipe 1, a flange 7 being welded to the second pipe 8 to limit expansion. A screw-threadedly-adjustable flange 16 compresses packing 15 in the base-plate 12, and the prestress of the bellows section 5 compresses a gasket 11 by means of a collar 9.
Patent GB-1196299-A (GB)
Title: Freeze-Drying Apparatus
IPC: F26B5/06
Filed: 1967-12-01
Abstract: 1,196,299. Freeze - drying apparatus. NESTLE'S PRODUCTS Ltd. 1 Dec, 1967 [23 Dec, 1966], No. 54846/67. Heading F4G. A freeze - drying apparatus comprises a vacuum chamber, a vibrating support for the material, means for heating the frozen material, at least one filter for removing material particles entrained in the sublimed vapours and at least one outlet for removing the sublimed vapours from the chamber. In one embodiment the apparatus comprises a vacuum chamber 1 through which the material is conveyed on vibrating trays 4 from an inlet airlock to an outlet airlock. The chamber 1 is connected to a vacuum pump and condensers 2. The trays 4 are ribbed, have heating fluid channels 9, and are mounted on supports 7 supported on springs 5, vibrated by vibrator means 8 and heated by heating tubes 11. Filters 12 comprising one or more parts, are rigidly connected to perforated chassis 13 supported by vibrators 15. The filters 12 and trays 4 are connected through flexible seals 16. In another embodiment, the tray forms the lower surface of a vacuum chamber and is connected to an upper part of the chamber by flexible seals. The heating means may comprise steam, mineral oil, infra-red, electric or gas heaters. The vibrator means may be pneumatically or electromagnetically operated.
Patent GB-1491230-A (GB)
Title: Fluid-cushion supported devices
IPC: B60V1/16
Filed: 1974-12-23
Abstract: 1491230 Fluid-cushion vehicles AIR CUSHION EQUIPMENT (1976) Ltd 5 Dec 1975 [23 Dec 1974] 55492/74 Heading B7K A fluid-cushion vehicle has a flexible skirt 5 which is formed of contiguous elements 25, Fig. 15, each having a bottom horizontal wall 30, and the contiguous side portions of adjacent elements are secured together to restrict the escape of cushion fluid. Each element is formed from a blank (26), Fig. 3 (not shown), and may be covered with an additional flexible material 58. The additional covering may be in the form of a shroud enclosing the skirt as shown in Fig. 15, the shroud being provided with nozzle-forming apertures 59b and smaller pressure-relieving apertures 59a. Alternatively, the additional covering may be in the form of a wear-resistant patch (33), Fig. 8 (not shown), provided at the bottom of each element, or in the form of a wear-resistant sheet (56), Fig. 14 (not shown), which is loosely folded over each element and covers both the inner and outer faces of the element. The skirt 5 is clamped to the platform 4, Fig. 2, of the vehicle by means of inner and outer clamping plates 15, 16, and a central manifold 8 directs the fluid outwardly towards the skirt (as shown at 9). The fluid may alternatively be directed downwardly into the skirt from an annular manifold (45), Fig. 13 (not shown).
Patent GB-1263467-A (GB)
Title: Improvements in and relating to porous metal structures
Inventor: ARMSTRONG EDWARD
IPC: E04B1/84
Filed: 1968-05-01
Abstract: 1,263,467. Making filters. DARCHEM ENG. Ltd. 11 April, 1969 [1 May, 1968; 17 May, 1968; 25 Nov., 1968], Nos. 20649/68, 23572/68 and 55739/68. Heading B3A. [Also in Divisions C7 and D1] A porous shaped metal structure suitable for filters and sound insulation comprises a random mass of helically wound wire or wires, e.g. stainless steel, 0À0005-0À125 inch diameter, compacted to the required shape. Preferably a Ni based brazing alloy powder is mixed with the wires and the mixture is compacted to sheet form which is then sintered in vacuum above the melting temperature of the brazing alloy. Alternatively the brazing powder may be dusted on one or both faces of the partially compacted or fully compacted mass of wires and then sintered.
Patent GB-1452759-A (GB)
Title: Telescopic support
IPC: F16M11/28
Filed: 1973-12-04
Abstract: 1452759 Lamp supports PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 4 Dec 1973 [7 Dec 1972] 56172/73 Heading F4R [Also in Division F2]  A telescopic support for lamps comprises a plurality of coaxial tubular sections, 1, 2, 3 of substantially square cross-section having between each immediately coaxial pair of sections, e.g. 1, 2 an assembly e.g. 16 of an L shaped cage and two sets of bearing rollers in each of two diagonally opposite corner spaces 16, 17, at one corner 17 the roller being in contact with both sections 1 (via fixed races 23, 24) and 2, and at the other corner each set of rollers, e.g. 18 being in contact with the inner section 2 and also with a separate raceway e.g. 25 which is loaded by a spring 27 towards its opposite rolling surface.
Patent GB-1174920-A (GB)
Title: Method of Making High Purity and Non-Melting Filaments
Inventor: TURKAT MICHAEL
IPC: C23C16/01
Filed: 1966-12-20
Abstract: 1,174,920. Coating with carbon &c. SPACE AGE MATERIALS CORP. Dec. 20 1966, No. 57054/66. Heading C7F. [Also in Division C1] A refractory filament is formed by cracking a hydrocarbon gas at a temperature of 3450 to 5000‹ F. to deposit a vapour on a grooved mandrel, removing the deposited material from the surface at the sides of the groove to leave a filament, and than removing the filament from the groove. The gas may be methane, propane, benzene, butane, acetylene, ethane or toluene. The material deposited may be pyrolytic graphite or by incorporating halides, oxides, carbonyls and dicumene compounds, the material may include B, W, Ta, Nb, Mo, Zr, V, Ti, Re, Cr or Th. Alternatively carbides of e.g. B, Nb, Ta or W may be formed. The filaments may be coated by flame spraying with ceramics, silicides or refractory metals. The filaments may be subsequently stretched at high temperatures.
Patent GB-1288280-A (GB)
IPC: B61G3/04
Filed: 1969-11-25
Abstract: 1288280 Railway couplings AMSTED INDUSTRIES Inc 25 Nov 1969 [16 Dec 1968] 57663/69 Heading B7T A bottom operating Janney-type railway coupling comprises a head 16 enclosing unlocking means for the pivoted knuckle 46, the unlocking means being actuatable by rotation of a rotor 66 mounted in the head between walls 74, 76, the rotation being operable by movement of a rotor arm 40 mounted on the rotor from a depending inactive position, shown in full lines in Fig. 2, to an unlocking position, shown in dot-dash lines, this movement being carried out by section 24 of a U-shaped member 18 pivoted to railway car 12 and operable from the periphery of the car by means of a lever 14, The unlocking means is operable by a projection 64 of the rotor which engages in a jaw 60 of a lever 58. The lever 58 is pivoted to a toggle 54 and having a trunnion thereof 52 engaging a leg 48 of the unlocking means. The centre of gravity of the rotor arm 40 is always such as to bias the arm in the clockwise position, Fig. 2, i.e. into the inactive position thereof. The Specification discloses the manner in which the contour of an A.A.R. type "F" coupler head may be modified for adaption of the coupler to one according to the invention.