baber/WOPTO huggingface dataset:
Patent GB-947514-A (GB)
Title: Improvements relating to fluid control valves
IPC: F16K31/06
Filed: 1959-10-29
Abstract: 947,514. Valves. D. A. LARNER. Jan. 30, 1961 [Oct. 29, 1959], No. 36803/59. Heading F2V. A fluid control valve comprises a spool 6 reciprocable in a bore 5 formed in a housing 1, an electro-magnet 52 secured to the housing and including an armature 59 linearly movable within a passage 49 and co-operating with the spool through the intermediary of a rod 64 slidable in a guide 40 and means, such as a bore 66 and grooves 63, for maintaining the end of the rod adjacent the spool in permanent communication with each end of the armature 59, the bore, guide and passage constituting a single sealed envelope communicating with the valve exterior only through fluid ports in the housing. In the preferred embodiment, the spool 6 is located in either of two positions to which it is moved by one of a pair of solenoids by balls 35 and annular grooves 31, 32. Each solenoid has a winding 52 supplied through rectifier 53 and an armature 59 mounted in a thin walled tube 49 secured to the guide 40 for a slidable rod 64. A port 29 communicates with end chambers 26, 27 for the exhaust of any pressure fluid which may have leaked past the spool while the bores and passages 63, 66, 67 and 68 allow'fluid to flow into cups 62 which may be deformable to provide an over-riding manual control. The spool locating mechanism may be replaced by a centring spring to give three positions of the valve, one of the solenoids may be replaced by a return spring, a push button sealed by an O ring may be provided for manual actuation and the solenoid windings may be " potted."
Patent GB-910092-A (GB)
Title: Gold-boron alloy and a method for producing the same particularly for semiconductor devices
IPC: C22C5/02
Filed: 1960-10-26
Abstract: 910,092. Semi-conductor devices. HUGHES AIRCRAFT CO. Oct. 26, 1960 [Nov. 2, 1959], No. 36816/60. Class 37. [Also in Group II] A gold-boron alloy for use in the manufacture of semi - conductor devices is made by heating a powdered mixture of gold and boron to above the melting - point of boron in an inert atmosphere to dissolve the boron in the gold and then quenching to prevent precipitation of the boron phase. In an example, layers of boron powder are disposed within a mass of gold powder in a cylinder and compressed by a plunger to form a pellet which is then mounted in a water-cooled crucible 17 (Fig. 3), in chamber 21. After evacuation the chamber is filled with dry helium and an arc struck between a water-cooled electrode 26 and the pellet. The electrode is pivotally mounted at 27 so that the entire area of the pellet can be scanned by the arc. Preferably the pellet is then inverted and the process repeated to ensure that at some stage each part of the pellet is raised to above the melting-point of boron. As an alternative, the pellet is heated by an electron beam. After cooling the pellet is removed and photo-micrographs show it to consist of boron particles of about 1 mil. diameter uniformly dispersed in a matrix of gold. The alloy preferably contains 1 part by weight boron to 100 parts gold. The uniformity of dispersion of the boron may be improved and its particle size reduced by adding <SP>1</SP>/ 10  part of cerium to the powder compact either as cerium powder or by incorporating cerium into the gold before powdering. Replacement of cerium by yttrium yields a further improvement. In spite of the brittle nature of the boron phase the alloy may be rolled into foil about 1 mil. thick. Ohmic contacts to P-type silicon wafers 52 (Fig. 4), may be made by rolling the foil on a nickel-iron alloy sheet to form coated tabs 50, which are then fused to the wafers by heating to melt the alloy coating 51. Alternatively, a PN junction contact is made between a wire and an N-type silicon wafer by melting a disc of the alloy between them.
Patent GB-788342-A (GB)
Title: Improvements in or relating to methods of providing an electrically conductive network on a support of insulating material
IPC: H01J9/14
Filed: 1955-12-23
Abstract: 788,342. Electrode materials and processing. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Dec. 23, 1955 [Dec. 30, 1954], No. 36887/55. Drawings to Specification. Class 39(1). In making charge storage or other electrodes an electrically-conductive fine-meshed network is formed on an insulating support, e.g., mica glass oxidized aluminium, by the successive operations of placing a grid on the insulator surface, covering the assembly, e.g., by oblique vaporization, with a soluble layer of fine crystalline material, e.g., water soluble barium chloride or other alkaline earth halide, removing the grid covering the assembly with a metal layer, e.g., gold, silver, platinum, palladium or iridium applied by cathode disintegration, immersing in a solvent, e.g. water, to dissolve away the crystalline material, and removing the metal not adhering to the surface. In an example approximately 72 per cent of insulator surface is uncovered, the elemental areas are 34Á across, the width of the strips 6Á and their thickness 0À01Á. The grid may be thickened by electrolysis in a copper bath, detached from the support and used as a selfsupporting electrode.
Patent GB-942820-A (GB)
Title: Machines for automatically feeding strip material
Inventor: LLOYD REGINALD JOSEPH
IPC: D06H7/02
Filed: 1960-10-27
Abstract: 942,820. Electric control systems. HUMPHRIS & SONS Ltd. Sept. 28,1961 [Oct, 27,1960], No. 36920/60. Heading G1N. In a strip feed a measuring device responsive to the amount of strip passing controls the strip feed so as to pass an exact length of material The invention is described with reference to feeding a strip by rollers 10,12 driven by a speed controlled motor 14 to a shear 68. The amount of strip passing a pair of measuring rollers 11 driven by the strip is determined by a pair of cams 31, 32 carried on a disc 29 rotated through gearing. The cams rock the rotor of a magslip 33 supplied with a reference voltage 34 to provide an output which is converted into a D.C. signal by a phasesensitive device 36 and compared in an adding circuit 37 with the output of a tacho-generator 38 driven by the feed motor 14. Any difference controls an amplifier 23 which unbalances the fields of a generator 18 to provide an armature supply to the motor. In operation the shear closes switch 25 after cutting to cause a relay unit 26 to put the amplifier under the control of the magslip output. The cam follower runs down one cam and up the other and during this period controls the motor speed so that it stops when precisely the correct amount of material has proceeded to the shear. The device is provided with a fine adjustment consisting of further magslip devices initially set up by dials 47, 49 to give the final adjustment of length. Fine magslip receivers 42, 50 used alternately are mounted in the measuring unit and driven from the strip through gearing 43. When the strip is within a short distance of its final position a microswitch 44 is operated to actuate a changeover relay 45 to put amplifier 23 under control of say fine magslip 42. The output of the device is compared with the setting of magslip 46 via follow through magslips 59, 60 so that the strip feeds stop when they are equal. At this time the other magslip is brought into action by means of the output from relay unit 51. The output from the fine magslip in use is converted into a D.C. voltage in phase-sensitive rectifier 54, compared at 55 with the output of tacho-generator 58 driven by a servo 56 and used to control a split field motor to reposition the magslip just used via the appropriate follow through. At the same time relay unit 65 also changes over the reference signal to the other follow through magslip. Specification 942, 819 is referred to.
Patent GB-814937-A (GB)
Title: Improvements in or relating to burners for liquid fuel
IPC: F23D5/00
Filed: 1957-11-27
Abstract: 814,937. Liquid fuel burners. HANSEN, L. S. Nov. 27, 1957, No. 36967/57. Addition to 812,454. Class 75(1) A burner for liquid fuel comprises a cylindrical burner pot 4 open at its upper part and having a plurality of air inlet holes 6 extending substantially all round the cylindrical wall, the axes of the holes being inclined to the radii of the pot so as to cause the air to follow a circular path, means for supplying air at greater than atmospheric pressure and a separate fuel inlet 5. The pot 4 is surrounded by a casing 1 connected to the air supply by a pipe 3. A heavy gauge metal ring 8 is mounted on the top of the pot 4 and serves to concentrate the flames into the smaller area 9 in the centre of the ring. The holes 6 in the pot 4 may be made by drilling and then inserting a broaching tool and forcibly displacing it laterally.
Patent GB-1188614-A (GB)
Title: Process for the Production of Trehalose, Raffinose and Sucrose Esters
Inventor: BRACHEL HANSWILLI VON
IPC: C07H13/06
Filed: 1968-08-02
Abstract: 1,188,614. Sugar esters. CASSELLA FARBWERKE MAINKUR AG. 2 Aug., 1968 [4 Aug., 1967], No. 37034/68. Heading C2C. Trehalose, raffinose and sucrose esters are prepared by heating trehalose, raffinose or sucrose to a temperature of 100‹ to 170‹ C. with a fatty acid ester which may contain a hydroxy group, and 0À5 to 20% by wt. of a basic transesterification catalyst referred to the weight of fatty acid ester employed. The alcohol that is liberated is distilled off. The heating is carried out at reduced pressure and in the absence of solvents.
Patent GB-943237-A (GB)
Title: Improvements relating to the treatment of hydrocarbon fractions
IPC: C10G45/62
Filed: 1960-10-28
Abstract: Hydrocarbon fractions boiling above 150 DEG C., e.g. a petroleum fraction or a distillate fraction boiling within the range 150-450 DEG  C. and which may contain sulphur, are contacted with a catalyst comprising a platinum group metal or a refractory oxide support in the presence of hydrogen and added halogen at a temperature of at least 600 DEG  F. and a pressure of at least 100 p.s.i.g., the temperature and space velocity used being so correlated to give a product boiling above 150 DEG  C. having a pour point at least 5 DEG F. lower than the pour point of the feedstock. The halogen, e.g. F, Cl, or Br, may be introduced either as such or as a compound which is decomposable to halogen under the reaction conditions, such as compounds with carbon, oxygen or hydrogen, e.g. hydrogen halides or halogen derivatives of aliphatic hydrocarbons having 1-4 carbon atoms.  The halogen material may be injected directly into the reaction zone, or introduced with the hydrogen or the feedstock.  The catalyst is preferably platinum or palladium. The refractory oxide support may be selected from one or more of the oxides of metals of Groups II, III and IV of the Periodic Table, preferably alumine.  It may also include compounds of non-metallic elements of Groups III, IV and V, e.g. boron or phosphorus, for example in combination with the aforesaid metals, preferably in an amount of 5-25% wt. Suitable reaction conditions are: .Temperature.600 DEG -950 DEG  F .Pressure.100-1500 p.s.i.g .Space velocity.0.1-8 v/v/hr .Hydrogen:hydrocarbon mole ratio 1;1.. .-20 : 1.. Specifications 928,460, 943,238 and 943,239 are referred to
Patent GB-899169-A (GB)
Title: Mechanical seals
Inventor: TURNER ROBERT STANLEY
IPC: F16J15/36
Filed: 1958-11-20
Abstract: 899,169. Stuffing-box substitutes. WALKER & CO. Ltd., JAMES. Nov. 16, 1959 [Nov. 20, 1958], No. 37360/58. Class 122 (5). In a mechanical seal for a rotary shaft 5, a rotary sealing ring 2 is urged into facial sealing contacts with a fixed ring 1 by an annular bellows 3 expanded by pressure air therein. The bellows is connected at one end to a collar 4 adjustably fixed to the shaft by a set-screw 10 and at the other end to a carrier 9 for the carbon ring 2. Air under pressure is supplied to the interior of the bellows through a valvecontrolled inlet 6 and the facial sealing pressure may be varied by varying the air pressure by either pumping air into or releasing it from the bellows or by moving the collar 4 along the shaft.
Patent GB-1517853-A (GB)
Title: Self-erecting mast assembly
IPC: B63B22/00
Filed: 1976-09-10
Abstract: 1517853 Linkwork FRANCE ARMED FORCES MINISTER OF 10 Sept 1976 [22 Oct 1975] 37608/76 Heading F2K A self-erecting mast assembly for underwater use comprises a set of tubular mast elements 3 which can fit together and are threaded on to a flexible band 4 attached at one end to a band tensioner 5 and at the other end to a ballast weight 2. Prior to deployment, the tubular elements are packed side-by-side (Fig. 1, not shown) within a casing 1. When the assembly is deployed under water by paying out a suspension cable 8, the casing 1 falls away and, under descent of the ballast weight 2 the band 4 is drawn out so that the tubular elements 3 become aligned along it. Thereafter the band 4 is tensioned by operation of the tensioner 5 so as to cause the tubular elements 3 to fix together and to tension support stays 29, 30. Finally, the weight 2 is released. Various parts of the assembly are described in detail.
Patent GB-1020275-A (GB)
Title: Improvements relating to copolymers
IPC: C08K3/30
Filed: 1964-09-16
Abstract: A process for improving the colour stability of an elastomeric copolymer of vinylidene fluoride and hexafluoropropene, and optionally tetrafluoroethylene, comprise incorporating therein, after it has been isolated from its polymerization medium, a colour stabilizing amount of sodium bisulphite or ammonium bisulphite. In examples, a vinylidene fluoride/hexafluoropropene copolymer is stabilized with (I) sodium bisulphite and (II) ammonium bisulphite, and a vinylidene fluoride/hexafluoropropene/tetra -fluoroethylene copolymer is stabilized with (III) ammonium bisulphite.
Patent GB-324777-A (GB)
Title: Improvements in and in connection with heating and ventilating systems
IPC: F24C1/14
Filed: 1928-12-24
Abstract: 324,777. Burnside, G. B. Dec. 24, 1928. Electric stoves.- A heating and ventilating system comprises a tubular member A provided internally with electrical heating means 4, and means for conserving the heat of the air passing through the member, and such member is disposed with its inlet 2 in communication with fresh air and its outlet extends upwards into communication with the room. The part of the tube in which the heating means is located is of hollow formation comprising inner and outer shells 5, 6 closed at the parts 7, 8 as shown in Fig. 1. The space between the shells may be filled with heat-insulating material, and if desired the double wall formation of the tube may be extended to the outlet 3 and also the inlet 2. A structure B of coal-grate appearance, which may be disposed in front of the tube A, is provided with transparent material C, representing fuel, illuminated from behind by a lamp 10.
Patent GB-1103710-A (GB)
Title: Improvements in or relating to portable power drive assemblies
IPC: B23G1/22
Filed: 1966-08-25
Abstract: 1,103,710. Machine tool details. COLLINS MACHINERY CORPORATION. 25 Aug., 1966 [1 Aug., 1966], No. 38119/66. Headings B3B, B3C and B3N. Apparatus for gripping and rotating an elongated workpiece, e.g. a length of pipe 23 to be screw-threaded, comprises a set of jaws 37 mounted around a central axis 21 and arranged to pivot on spindles 26, each jaw having a workgripping face 42 which is convex towards the axis 21 and shaped so that the workpiece can be gripped and driven in either direction and so that each jaw 37 can adopt a work-release position in which the jaw lies generally perpendicular to a radial plane through the central axis and pivot axis. The spindles 26 are carried by a rotatable carrier 18 mounted in a housing 10 but are connected by a pair of linked levers (30, 32), Figs. 4, 5 and 8, not shown) to a drivering 31 driven by a reversible motor 35 through pinion 36. Rotation of the drive-ring causes, in the first place, pivoting of the jaws 37 to grip the workpiece and then rotation of the carrier 18 together with the jaws 37 and workpiece 23. To ensure that pivotal movement of the jaws to the gripping position precedes rotation the carrier 18 is braked by a spring-tensioned brake-band 53 and brake-shoe 50. The apparatus may be supported, Fig. 1, on a portable stand 13, while the housing 10 supports two parallel slide-bars 54 which carry pipe-threading means 56 of the type described in Specification 1,038,310 and a tapered pipe end reamer 60 which may be manually pressed against the pipe end by means of a pusher 62.
Patent GB-941152-A (GB)
Title: Improvements in and relating to synchronous motors
Inventor: BEHAGUE JACK RUSSELL
IPC: H02K19/12
Filed: 1961-10-25
Abstract: 941,152. Synchronous motors; converting; distributers. LODGE-COTTREL Ltd. Oct. 1, 1962 [Oct. 25, 1961], No. 38140/61. Headings H2A, H2B and H2F. In a synchronous motor-driven rotary rectifying switch the required output polarity is obtained by supplying both the motor and switch from the same A.C. source and making the motor self-synchronizing by supplying D.C. to its rotor from an alternator rotor through a bridge rectifier where both rotors and rectifiers are mounted on the rotating shaft. The motor stator winding 26 is supplied from a 3-phase supply and salient pole rotor 16 is supplied with a D.C. synchronizing supply from rectifier bridge 12 which is supplied with A.C. from winding 27 on rotor 18 of the exciter alternator 13. The rotor 16 also has a squirrelcage starting winding and the alternator may be permanent magnet excited or have a wound stator 17. The device may be used to supply high voltage D.C. to an electrostatic dust precipitator. The switch comprises a rotor disc 24 of insulating material with four discharge points 37-40 spaced around the periphery at 90 degrees from each other, with adjacent pairs being connected together by wires 41, 42. Four stationary collector shoes 43-46 are spaced to clear the discharge points when the disc rotates. The high voltage A.C. supply to the rotary switch is derived through transformer 53 from one phase of the motor supply and is applied to shoes 44, 46 and passes across the respective gaps to shoes 45, 43 and the external circuit: shoe 46 being more negative than shoe 44, say, so that the D.C. polarity is as shown. When the disc has rotated clockwise through 90 degrees, point 40 will now lie under shoe 44, which is now more negative than shoe 46, and shoe 43 will again collect a voltage which is negative with respect to earth so the disc rotating at synchronous speed will act as a rectifier.
Patent GB-933701-A (GB)
Title: Method for inspection of autogenous welds
IPC: G01N3/00
Filed: 1959-11-11
Abstract: 933,701. Detecting flaws. M. PEVAR. Nov. 11, 1959 [Nov. 12, 1958], No. 38179/59. Class 37. In a process for the examination of an autogenously welded workpiece in order to determine the areal extent of weld, magnetic particles are applied to its surface and the workpiece is magnetized, a permanent record being obtained by using the particles in a dispersion which will subsequently harden or can be hardened to freeze the magnetic pattern. The core components 10, 12 of a sandwich structure are spotresistance welded along surfaces 18 by rollers 28, 30, Fig. 2, and skins 14, 16 are similarly attached along surfaces 20, 22. The granular micro-structure of the metal which varies over the area of the weld nugget bond and results in changes in the magnetic permeability enables the areal extent of the bond to be determined. The dispersion may be iron oxide powder in a solution of polyvinyl alcohol and ethyl alcohol, or may include thermosetting or thermoplastic plastics. In a continuous system, Fig. 5, the sheets pass roller welding electrodes 28, 30, magnetic field producing coils 50, and aerosol dispensers 54, 56 for the application of the dispersion, the rate of movement of the workpiece being such that the film has time to harden before reaching the stripper knives 66, 68. The film is examined by photometric apparatus, and stored on spools 82. The inclusion of glycerine in the dispersion to facilitate film removal, and the strengthening of the film by the application of additional transparent layers are described.
Patent GB-334468-A (GB)
Title: An improved direction indicator for use on motor and other road vehicles
IPC: B60Q1/34
Filed: 1929-12-13
Abstract: 334,468. L³ders, W. Dec. 13, 1929. Road-traffic signals on vehicles. - Directionsignalling arms c, arranged one on each side of a road-vehicle, are actuated by a handle m rotating a toothed segment n into engagement with one or other of two bevel gears o connected by clutch couplings q and flexible cable i with crank mechanism h, g, f for rotating the arms c about pivots b. The arm c is held locked in the extended and folded positions by reason of the dead centre of the crank mechanism. The handle m is spring-pressed so that a projection thereon engages suitable recesses to retain the handle in the neutral and operative positions.
Patent GB-1437416-A (GB)
Title: Electric knife
IPC: B26B7/00
Filed: 1973-08-14
Abstract: 1437416 Electric actuated knives MOULINEX SA 14 Aug 1973 [3 Nov 1972] 38404/73 Heading B4B [Also in Division E2] An electrically-actuated knife comprises a housing 10 in which a drive unit 12 is arranged to reciprocate a pair of slides 14, 16, a pair of blades each having a tang releasably secured in its respective slide by means of a catch 22. Each catch comprises a plate having a lug 32. adapted, in the locked position of the blade, to be urged by a spring 30 into engagement with a notch 34 in the tang. The lugs are disengaged by depressing a spring-loaded button 50.
Patent GB-1090702-A (GB)
Title: Improvements in detector circuits
Inventor: MEHRTENS DAVID HENRY
IPC: H03D1/18
Filed: 1965-09-09
Abstract: 1,090,702. Transistors or valve detector circuits. A. C. COSSOR Ltd. Sept. 1, 1966 [Sept. 9, 1965], No. 38587/65. Headings H3Q and H3T. A long-tailed pair or the valve equivalent circuit is used as a detector. In Fig. 1 the input is applied to the base of the first transistor 13 through a tuned transformer winding, and the two emitters are connected through low resistances 18 and 19 to a large resistance 17 acting as a constant current source. With no input the capacitor 21 is charged so that the output terminal 22 is slightly negative. A positive input half-cycle charges the capacitor in the opposite sense making the terminal 22 positive, and this reverse biasses the transistor 13 on the next half-cycle. In a modification, Fig. 2, the input is supplied from an I.F. amplifier (26) via a coupling capacitor (25), and the base of transistor 13 is connected to earth by a radiofrequency choke (28) which provides a low resistance D.C. path, and the capacitor 21 is connected to the collector power supply instead of to earth. The output may be taken from a load resistance connected between the collector of either transistor and the battery. The circuit can be used for detecting pulses of carrier wave or for detecting amplitude modulation.