baber/WOPTO huggingface dataset:
Patent GB-2454105-A (GB)
Title: Method of controlling the position of a read/write head and apparatus for testing a read/write head
Inventor: MILES MICHAEL ALAN
IPC: G11B5/455
Filed: 2007-06-25
Abstract: A method of controlling the position of a read/write head (4) relative to a disk (2) in a test apparatus (1) is disclosed. The test apparatus (1) has a positioner (7) for positioning the head (4). The positioner (4) has a sensor (12) for measuring the actual position achieved by the positioner (7). The method comprises generating a sensor signal (13) measuring the actual position achieved by the positioner (7); generating a position error signal (20) of the head (4) relative to the disk (2) detected at the head (4); high pass filtering (21) the head position error signal (20) and low pass filtering (14) the sensor signal (13) so that there is substantially no overlap in frequency between them; and, deriving a low frequency head error signal (24) from the head position error signal (20) corresponding to any drift of the head (4).
Patent GB-2453302-A (GB)
Title: Electron beam control method, electron beam generating apparatus, apparatus using the same, and emitter
Inventor: FUJITA SHIN
IPC: H01J1/13
Filed: 2006-06-30
Abstract: Provided is a Schottky emitter having the conical end with a radius of curvature of 2.0 žm on the emission side of an electron beam. Since a radius of curvature is 1 žm or more, a focal length of an electron gun can be longer than in a conventional practice wherein a radius of curvature is in the range of from 0.5 žm to not more than 0.6 žm . The focal length was found to be roughly proportional to the radius of the curvature. Since the angular current intensity (the beam current per unit solid angle) is proportional to square of the electron gun focal length, the former can be improved by an order of magnitude within a practicable increase in the emitter radius. A higher angular current intensity means a larger beam current available from the electron gun and the invention enables the Schottky emitters to be used in applications which require relatively high beam current of microampere regime such as microfocus X-ray tube, electron probe micro-analyzer, and electron beam lithography system.
Patent GB-2468903-A (GB)
Title: Aerofoil tip vortex reducing structure
Inventor: PEARSON RONALD DENZIL
IPC: B64C23/06
Filed: 2009-03-26
Abstract: For reducing wind turbine tip vortices, each blade tip comprises two or more vanes 3,6 or winglets separated by a gap 7 through which flow that would have formed a vortex core is passed from the upwind to the downwind blade sides. The trailing vane trailing edge is close to the main blade trailing edge. The pressure of fluid passing through the gap falls to the downwind side pressure so flow is ejected in a direction opposite that of blade motion to suppress rapidly revolving vortex core formation. A shroud 10 may cover two vane tips to prevent the formation of secondary vortices. The vane stagger at their roots is greater than that of the main foil and reduces along the length of the vane. The leading vane may be tilted towards the suction surface and the same length or shorter than the trailing vane which may tilt towards the pressure surface.
Patent GB-2469650-A (GB)
Title: Reference electrode and combined electrode
Inventor: RUSSELL TIMOTHY HOWARD
IPC: G01N27/30
Filed: 2009-04-21
Abstract: A reference electrode comprises an outside wall which acts as a boundary between electrolyte (6) and sample solution, which outside wall comprises a resin (8) which is ionically conducting, non-porous and salt-loaded, and a barrier (10) through which no electrochemical communication between the electrolyte (6) and sample solution is possible. A window (12) is present in the barrier (10) thereby allowing electrochemical communication between the electrolyte (6) and the sample solution through the resin (8) at the window (12). The reference electrode can be suitable for use with a separate measuring electrode, or can be combined with a measuring electrode in a single unit electrode assembly.
Patent GB-2469663-A (GB)
Title: Isolated DC-DC boost device
Inventor: DUAN ROU-YONG
IPC: H02M3/335
Filed: 2009-04-22
Abstract: A boost device boosts an input voltage (VIN) to an output voltage (V0) across an output capacitor (C0), and includes an output diode (DZ) coupled to the output capacitor (C0), and a transformer (2) coupled to a first switch (S1), a clamp circuit (3) and a boost circuit (4). The clamp circuit (3) is coupled across a first winding (LP) of the transformer (2), and includes a clamp capacitor (CX) coupled in series to a second switch (S2). The first switch and second switch do not have any overlap in the on-time. The output capacitor (C0) is capable of being charged through the output diode (DZ) with an induced voltage (VLS) across a second winding (LS) of the transformer (2). The boost circuit (4) is capable of being charged with the induced voltage (VLs) across the second winding (Ls), and of charging the output capacitor (C0) so as to boost the output voltage (V0) across the output capacitor (C0). The device ensures electrical isolation between the input and output.
Patent GB-2472429-A (GB)
Title: A method of restoring a water-damaged vehicle
Inventor: PECK ADRIAN JAMES
IPC: B60S1/00
Filed: 2009-08-06
Abstract: A method of restoring a water-damaged vehicle is started by identifying and removing interior and exterior water-damaged components and electrical components which have been submerged, treating said removed components in an ultrasonic bath of water-based cleaning solution (possibly to remove corrosion), drying said water / flood-damaged vehicle body chassis from which said components have been removed in a de-humidifying tent, re-assembling said dried, treated components into said vehicle and performing a bacteria test on part of said reassembled vehicle to validate said drying and restoration. Preferably, ozone is passed through the air ducts to kill bacteria. The treated components may be placed in an oven prior to drying. The bacteria test ideally comprises an ATP (adenosine triphosphate) which can detect bacteria and reveal its presence under UV light. The test may also inspect for mould, fungi and microbes.
Patent GB-2461445-A (GB)
Title: System and method for monitoring physical condition of production well equipment and controlling well production
Inventor: THIGPEN BRIAN
IPC: E21B43/12
Filed: 2008-04-18
Abstract: A system and method for producing fluid from a completed well is provided wherein the method in one aspect includes determining a first setting of at least one first device under use for producing the fluid from the well; selecting a first set of input parameters that includes at least one parameter relating to health of at least one second device and a plurality of parameters selected from a group consisting of information relating to flow rate, pressure, temperature, presence of a selected chemical, water content, sand content, and chemical injection rate; and using the selected first set of parameters as an input to a computer model, determining a second setting for the at least one first device that will provide at least one of an increased life of at least one second device and enhanced flow rate for the fluid from the completed well.
Patent GB-2461223-A (GB)
Title: Covert illumination
Inventor: BENTON DAVID MARK
IPC: G01S17/18
Filed: 2009-11-04
Abstract: This invention relates to methods and apparatus for covert illumination. The method involves illuminating the scene with light which is tuned to an absorption resonances of atmospheric oxygen gas. Light tuned to have a wavelength corresponding to an oxygen absorption wavelength travelling through the atmosphere is therefore attenuated by absorption. The method therefore teaches that a low power illumination source can be used to illuminate nearby objects, thus allowing the detail thereof to be resolved, and the illuminating light reflected from the object, or even the light source itself, will be undetectable beyond a certain range due to atmospheric absorption. The illumination may be used in conjunction with the use of low light level imagers to image a scene. Alternatively the illumination could be used for short range optical communication which will be undetectable at much longer range.
Patent GB-2470245-A (GB)
Title: Interactive exercising system
Inventor: DUDGEON TIMOTHY
IPC: A63B22/02
Filed: 2009-03-10
Abstract: The present invention provides an exercising system which allows a user interactive with a virtual environment when exercising using the system. The interactive exercising system comprises an exercising apparatus, a mobile user component means operable to move with at least part of the body of a user as the user uses the exercising apparatus, means for determining a relative movement between the mobile user component means and at least part of the exercising apparatus, and means for enabling the user to interact with a virtual environment based on the determined relative movement between the mobile user component means and the at least part of the exercising apparatus.
Patent GB-399552-A (GB)
Title: Improvements in or relating to television and like apparatus
IPC: H04N3/08
Filed: 1932-04-07
Abstract: 399,552. Television. BAIRD, J. L. and BAIRD TELEVISION, Ltd., 133, Long Acre, London. April 7, 1932, No. 10035. [Class 40 (iii).] An endless band of progressively canted mirrors 16 moves over, and is driven by, a pair of pulleys 18, 20. The diameter of one 18 of the pulleys determines the angle subtended at the effective mirror by the length of the scanned area 24 in the direction of traversal. The pulley is made small to give a great length to the scanned area.
Patent GB-175209-A (GB)
Title: A locking device for covers of port holes of ships or other openings
IPC: B63B19/00
Filed: 1921-04-05
Abstract: 175,209. Clarke, J. H. April 5, 1921. Cabin and deck lights.-A port-hole closure, which is pressed home by the rotation of a ring 5 carrying blocks 6 which become wedged beneath lugs 7 upon a fixed frame 4, is secured in that position by the engagement of a spring latch-bolt 18 with a notch in one of the blocks 6. The bolt is countersunk in the corresponding lug 7 and can only be withdrawn by the proper key 25, which preferably has a screw engagement with the bolt, a multiple thread 24 being employed to secure rapidity of action. A block of the Bramah or pintumbler type may be employed to control the bolt. The general arrangement of the parts shown for operating the closure is described in Specification 8022/13.
Patent GB-616547-A (GB)
Title: Improvements in ignition systems for internal combustion engines
Filed: 1946-04-01
Abstract: 616,547. Ignition systems. EITEL-McCULLOUGH, Inc. April 1, 1946, No. 10063. Convention date, Oct. 11, 1943. [Class 7 (iv)] An ignition system comprises a source of high-frequency electric oscillations, a keying means for the source causing intermittent operation thereof in synchronism with the engine and means conducting the intermittent oscillations thus produced to energize ignition means for producing a spark within the combustion chamber, the ignition means being adapted when energized to resonate at the frequency of the oscillations to produce a spark within the combustion chamber and a potential node adjacent the wall of the chamber. The term high-frequency is intended to denote frequencies of the order of 300 megacycles or higher. Fig. 1 shows a high-frequency oscillator 8 supplying oscillations by a transmission line 14 comprising an inner conductor 17 and tubular conductor 16 to a quarter-wave line comprising two parallel metallic rods 9 in the engine combustion chamber. The oscillator is operated in timed relation to the engine by means of a switch 21 driven by the engine. Each time the switch closes, a condenser 19 is discharged into the oscillator to set it working. The discharge takes place at the potential antinode at the end of the rods 9. The condenser is charged by a suitable D.C. source such as by a full wave rectifier 23. In a modification, a tuned transmission line comprising two parallel insulated conductors in place of the rods 9 is employed. In a further modification, Fig. 4, the combustion chamber is formed as a resonant cavity having a gap 28 therein. The high-frequency oscillations are supplied to a line 16, 17 ending in a loop 29. Specification 583,802 is referred to.
Patent GB-397592-A (GB)
Title: Improvements in or connected with collapsible or occasional tables
IPC: A47B3/12
Filed: 1932-04-08
Abstract: 397,592. Tables. FAZACKERLEY, P., 272, Manchester Street, Oldham. April 8, 1932, No. 10065. [Class 52 (iii).] A collapsable table comprises two frames centrally pivoted together at a<5>, a<6>, each frame being formed of two legs a<1> a<1>, a<2> a<2> joined by two sets of cross rails. The upper parts of the four legs are cut away to provide stepped portions a<x> into which fits the table top, and. pivoted catches b<2>, hinged at b<3> to elements on the legs, clamp the table top c in position by means of rubber or fibre feet b<4>. The top c may be releasedby upward' hinging of the catches and, with the table framework collapsed, can be supported in grooved strips d and on a peg e to form a fire screen.
Patent GB-791933-A (GB)
Title: Improvements in or relating to telecommunication systems
Inventor: CATTERMOLE KENNETH WILLIAM
IPC: H04B14/02
Filed: 1956-04-03
Abstract: 791,933. Automatic exchange equipment. STANDARD TELEPHONES & CABLES, Ltd. April 3, 1956, No. 10123/56. Addition to 753,645, [Group XL (c)]. Class 40 (4). [Also in Group XL (c)] Time division multiplexing of amplitude modulated pulses is obtained by providing a plurality of the combined modulator/demodulators disclosed in the parent Specification and switching them with pulses derived from a corresponding number of the transistor frequency dividers disclosed in Specification 784,379, [Group XL (c)]. Clock pulses applied to the dividers are divided by 25 so that each modulator/demodulator may be triggered to operate in any one of 25 time-phase positions in the multiplexed output. As applied to a telephone switching system, Fig. 4, 200 lines are connected each to a selector 41, of the kind above described, the outputs of the selectors being connected to a multiplex bus-bar 42. Selectors not in use are biased to cut-off. The passage of line current when a caller lifts his handset removes this bias and a starting impulse is applied via a selector 44 (which scans all the lines) from a selector 43 which seeks a vacant channel on the multiplex bus-bar. A further selector 45 acts as a register unit and is set by selector 43 to the same channel as the caller so as to send out dial tone and receive dialling impulses which step it into coincidence with the scanning switch 44 on to the called subscriber's channel selector.
Patent GB-101210-A (GB)
Title: Improvements in Rotary Compressors.
Inventor: ALGRIN RENE
IPC: F04B49/03
Filed: 1916-07-19
Abstract: 101,210. Algrin, R. Aug. 16, 1915, [Convention date]. Revolving-cylinder pumps; controlling compression; valves, arrangement of.-In a rotary compressor having radially-disposed cylinders and a stationary crank-shaft around which the cylinders revolve, the inner ends of the cylinders are rigidly secured in an inner casing enclosing the crank and piston rods and forming a compressed-air receiver while an outer casing encloses the cylinders and their heads. As shown, each cylinder 1, Fig. 3, is provided with a diaphragm inlet valve 6, and the piston 3<1> is provided with a discharge valve 8 communicating with the inner casing or air-tight crank chamber, from which the compressed air passes through a hollow crank-shaft. The centrifugal effect on the valve 8 is approximately counterbalanced by means of pivoted levers 11 operating on the valve stem. When it is desired to let the compressor run idly, the valves 8 are held open by means of sliding cam-members 13, which are connected to an exterior hand-operated rod passing through the crank-shaft, by means of a lever 24, a grooved sleeve 23 sliding on the crank-pin, bent levers 20 pivoted alongside the connecting-rods, sleeves 17 sliding on the small ends of the connecting-rods, levers 14, and compression springs 15. The function of the spring 15 is to allow the operating-rod to be placed in the idle position irrespective of the position of the valve, and to cause the cam-member 13 to move into the holding-open position when the valve is next opened during the cycle of operations. The return movement of the cam-member 13 is effected by its positive engagement with the lever 14. To reduce air resistance, the cylinders and connecting-framework are enclosed in an outer casing provided with holes for the admission of air and preferably having vanes 32, Fig. 9, for directing the air into the casing. In a modified construction, the discharge valves 8 are placed in the heads of the cylinders concentrically with the inlet valves 6, instead of in the pistons, and lead through passages to a cylindrical reservoir rotating with the compressor and communicating with the inner casing to which the inner ends of the cylinders are secured.
Patent GB-301690-A (GB)
Title: Improvements in rotary compressor, pump or motor
IPC: F01C1/46
Filed: 1928-04-04
Abstract: 301,690. Hult, C. A. April 4, 1928. Stuffing-boxes, substitutes for.-Leakage along a shaft 3 of a rotary engine is prevented by a ring 19 carried by a flexible sleeve 18 and pressed on to the end 16 of the engine casing by a spring 20.
Patent GB-724337-A (GB)
Title: High frequency electric conductor
IPC: H01B7/30
Filed: 1953-04-14
Abstract: 724,337. High-frequency conductors. SUMITOMO ELECTRIC INDUSTRIES, Ltd. April 14, 1953 [April 14, 1952], No. 10176/53. Class 36. In a high-frequency conductor built up from a number of conducting strands which do not themselves exhibit any noticeable skin effect at the frequencies employed, the strands are arranged in at least two concentric layers b which are insulated from each other, at least one insulating barrier is positioned in each layer to prevent the flow of circumferential currents, and the stranding pitch of each layer is such that the effective inductances of the individual layers are substantially equal to each other. The strands may be in the form of wires or tapes and may be individually insulated or not. In the latter case each layer b includes a non- conducting thread c and the layers are separated by insulation d. Successive layers b may be arranged with decreasing pitch and the outer layers may be laid up in the opposite direction to the inner layers. The conductor may comprise two layers b, each having the same pitch, but opposite direction. The conductor may be formed around a magnetic or non- metallic core a, and may form the inner conductor of a coaxial cable, the outer conductor being similarly constructed but arranged so that the pitch of the layers b increases towards the outside.
Patent GB-805108-A (GB)
Title: A process for the preparation of a fungicide based on ethylene-dithiocarbamates
IPC: C07C333/16
Filed: 1956-04-03
Abstract: The invention comprises a mixture of zinc salts of dithiocarbamic acids obtainable by treating a mixture of ethyleneamine hydrochlorides derived from ethylene dichloride and ammonia with sufficient base to liberate the amines and also to neutralize dithiocarbamic acids resulting from subsequent reaction with carbon disulphide, which is added in an amount stoichiometrically equivalent to the amine nitrogen present, adding a mineral acid, such as dilute hydrochloric acid, until the reaction mixture is neutral to phenolphthalein, and adding in slight excess an aqueous concentrated solution of a soluble zinc salt.  The ethyleneamine starting mixture preferably consists of 65 to 80 per cent ethylenediamine, 19-29 per cent diethylenetriamine, 1 to 4 per cent triethylene-tetramine and 0 to 2 per cent higher polyethylene-polyamines, which mixture is obtained by reacting anhydrous or 30 to 70 per cent aqueous ammonia with ethylene dichloride in molar ratios of from 40 : 1 to 55 : 1 at temperatures of 100 DEG  to 120 DEG  C.  The initial treatment with a bases is preferably conducted at room temperature using aqueous caustic soda or aqueous milk of lime.  The carbon disulphide addition is preferably carried out at a temperature of 20 DEG  to 35 DEG  C. The soluble zinc salt is preferably derived from an inorganic acid (e.g. hydrochloric) and the addition thereof is preferably carried out at room temperature and with stirring.ALSO:A fungicidal composition comprises a mixture of zinc salts of dithiocarbamic acids obtainable by treating a mixture of ethyleneamine hydrochlorides derived from ethylene dichloride and ammonia with sufficient base to liberate the amines and also to neutralize dithiocarbamic acids resulting from subsequent reaction with carbon disulphide, which is added in an amount stoichiometrically equivalent to the amine nitrogen present, adding a mineral acid, such as dilute hydrochloric acid, until the reaction mixture is neutral to phenolphthalein, and adding in slight excess an aqueous concentrated solution of a soluble zinc salt (e.g. zinc chloride).  The ethyleneamine starting mixture preferably consists of 65 to 80 per cent ethylenediamine, 19 to 29 per cent diethylenetriamine, 1 to 4 per cent triethylene tetramine and 0 to 2 per cent higher polyethylenepolyamines.
Patent GB-986484-A (GB)
Title: Pump for liquids
IPC: F23K5/02
Filed: 1961-03-21
Abstract: 986,484. Forcing liquid by gaseous pressure. BECKMAN INSTRUMENTS Inc. March 21, 1961 [March 21, 1960], No. 10190/61. Heading F1R. Apparatus for providing a slow, uniform flow of liquid by displacement with a gas under pressure comprises a container 34 having a gas inlet 25 and a liquid outlet 18, the gas inlet being provided with a constriction 30 which has an impedance to gas flow providing a flow rate of approximately 0À03 to 0À2 ml/min for 1 p.s.i. drop across said impedance, so that the liquid flow rate is substantially independent of changes in impedance in the outlet and in the viscosity of the liquid. The construction 30 may comprise a palladium wire sealed in a capillary tube, a pinched metal tube, a fine glass capillary or a narrow tube packed with powder. The inlet and outlet conduits are of capillary tubing and a pressure regulator 27 and a pressure gauge 31 are provided in the inlet conduit. The apparatus is described in combination with a burner for use in flame photometry.
Patent GB-508735-A (GB)
Title: An improvements in or relating to hose couplings
IPC: F16L37/084
Filed: 1938-04-06
Abstract: 508,735. Pipe couplings. LEECH, H.C.. and HARRIS. G. W. April 6, 1938, No. 10479. [Class 99 (i)] Spring-urged locking members b mounted in recesses in a, spigot a have a chamfered edge b<3> so that in coupling the members are depressed by the end of a socket f and then spring outwardly into a groove f<1> of the socket. Levers e limit the outward movement of the members and are actuated to release them from engage-, ment with the socket. A gasket h secured in the socket enters a groove g in the spigot.
Patent GB-105762-A (GB)
IPC: B62D21/14
Abstract: 105,762. Hudson, W. F. April 10, 1916, [Convention date]. Frame components, sections and forms of, and applying and combining.-In converting a pleasure car into a commercial car, the wheel base is extended by fitting removable parts to the frame, and the propeller shaft is lengthened by fitting a part between the change-speed gear and the universal joint. The frame is strengthened by cross-members uniting the step hangers. The frame is extended by members 10, Figs. 1, 5 and 6, bolted to the near cross frame member a and formed with tapered parts 12 fitting into and bolted to the channelled side frame members b. The members 10 are provided with lugs 19, 18 bolted to the cross-member a and a lug 17 on the side-member b respectively and with a strengthening-lug 11. The frame is strengthened by cross-bars 42 connecting the step hangers 43. The universal joint 21 is carried in a crossmember 20 and is connected to the change-speed gear by a stub shaft 22.