baber/WOPTO huggingface dataset:
Patent GB-2027962-A (GB)
Title: Automatic mark recognition
IPC: G06K7/10
Filed: 1979-08-01
Abstract: Information is encoded upon a document (BE) by handwritten marking (M) at one or more positions of a matrix. The matrix is notionally divided into sections each of which should, according to the encoding used, contain a known number of markings. The reading apparatus has a photo- electric scanning unit (OP, SC) which scans the document and supplies video signals (VS) to signal conversion units (SW1, 2, 3) where they are quantised with different threshold values. Scan data (AD1, 2, 3) obtained in this way are further processed in mark recognition units (MSS1 to MSS3) to obtain mark data (MD1, 2, 3). The items of mark data which correspond to differing degrees of density of the mark are subjected to a plausibility check in a plausibility checking unit (PCE), in which the actual number of marks (M) within a mark section, as determined from the sets of mark data (MD) obtained using different thresholds, is in each case compared with the theoretical number in a mark data calculating unit (MIP). That set of mark data (MD1, MD2, MD3) which result in uniformity is output as a plausible read-out result. <IMAGE>
Patent GB-2028496-A (GB)
Title: Interferometer gyro
IPC: H01S3/083
Filed: 1979-08-02
Abstract: The interferometer gyro includes a signal source 36 of light which is divided and introduced into a light path 34 in counter-rotating directions by a beam splitter 35. The light is removed from both counter-rotating directions after it has traversed the path by splitters 42 and 43 and the removed beams combined with a reference signal provided by a reference light source 50 and a beam splitter 51. The phase difference between the two combined signals is determined by detection at photodiodes 56 and 57 and a phase detector 61, to indicate the rotation of the optical path about which the light traversed. The signal and reference light beams can be produced from a single source by modulating with two frequencies, the difference between which is a frequency which is easily handled by the electronic circuitry. The path 34 can be formed by a coiled optical fibre instead of by mirrors 31, 32, 33. The apparatus may be constructed using integrated optics and electronics, Fig. 3. <IMAGE>
Patent GB-2055520-A (GB)
Title: Pulse Rate Discriminator
IPC: G01R23/15
Filed: 1979-08-04
Abstract: A pulse rate discriminator has a first capacitor (C1) which is charged from a constant current source (2) between pulses and a switch (S1) which is closed to short circuit the capacitor (C1) for time intervals equal to the duration of the pulses. A second switch (S2) is closed momentarily by pulses derived from a differentiating circuit (3) to transfer to a second capacitor (C2) the voltage across the first capacitor, so that the size of the resulting voltage across the second capacitor is proportional to the time interval for which the first capacitor has charged. The voltage across the second capacitor is applied to threshold switches (4, 5) which detect when the incoming pulse rate is outside predetermined limits. <IMAGE>
Patent GB-2035389-A (GB)
Title: Improvements in or relating to knitting
IPC: D04B15/48
Filed: 1979-09-25
Abstract: The present invention relates to the knitting an item of fabric on a knitting machine requiring interrupted or intermittent yarn feed, wherein the yarn is positively fed at least during a part of the knitting process and said positive feed is removed prior to a change in the yarn feed while said yarn feed ceases or knitting continues without interruption through said change after said positive feed is removed. <IMAGE>
Patent GB-2063328-A (GB)
Title: Floor covering slabs
IPC: E01C13/04
Filed: 1979-09-25
Abstract: A surface covering for games arenas such as tennis courts comprising a slab shown inverted formed of a plurality of regular polygon shaped regions (1), e.g. squares, delimited by ribs (5) which depend from the upper load bearing surface of the slab and which abut the surface to be covered and by grooves (2) in the upper surface. Further ribs (3, 4) which depend from the upper surfaces are arranged to abut the surface to be covered, and radiate from the centre of each region. The grooves (2), ribs (3, 4) and apertures 6 allow small expansions or contractions of regions (1) due to temperature differentials to be absorbed by the individual regions (1) and allow larger changes to take place substantially in the plane of the covering, thus avoiding ridges and cavities which occur with known coverings. The outer edges are supported by semi-circular 11 or quarter-circular 13 pegs. <IMAGE>
Patent GB-2033463-A (GB)
Title: Method and apparatus for releasably connecting together two objects
IPC: E21B41/10
Filed: 1979-09-26
Abstract: A connector, for interconnecting two elements which fit one within the other, such as inner and outer tubes in a subsea oil installation, comprises an annular snap spring (56) carried by the inner element (13) and capable of snapping into an annular groove (32) in the outer element (12) as the inner element is urged in one direction into the outer element. The groove (32) is chamfered on one side to cause the snap spring to be compressed by further movement of the inner element in the said direction and locked in its compressed state to enable the inner element to be withdrawn. The inner element is connected to cables to enable it to be hauled into and out of the outer element from a remote location. <IMAGE>
Patent GB-2041427-A (GB)
Title: Insert for tool wear surfaces and method of manufacture
IPC: B23P5/00
Filed: 1979-10-10
Abstract: Abrasion resistant inserts incorporating hard particles, particularly diamonds, for use in the wear surfaces of a tool body, e.g. a drill string stabilizer, have generally been relatively costly to manufacture. This invention provides an insert (10) including a body portion having pockets (40, 44) in its exposed face (12) and a solid matrix (50) formed into each pocket by powder metallurgy. Each matrix includes at least one hard, abrasion resistant particle (52), for example, a diamond. A method of manufacturing an insert includes the steps of filling the pockets in the body portion with carbide matrix powder (50) having a hard particle (52) disposed therein, placing a binder on the matrix powder and heating the matrix powder and binder to a temperature sufficient to melt the binder so that the binder infiltrates the matrix powder to form the solid matrix. <IMAGE>
Patent GB-2064978-A (GB)
Title: Filter bag with removable shaping members
IPC: B01D46/02
Filed: 1979-12-07
Abstract: A filter structure supporting a series of tubular filter bags 3 for filtering a dust-laden airflow DA. The filter bags 3 are subjected to a momentary reverse flow for purging collected particles from the bag walls. The filter bags 3 are supported against pressure drops across the bag walls by bag shaping members 10 spaced at intervals along each filter bag. Each bag shaping member 10 is retained in an adjustable annular pocket formed by a cuff 11 secured to the bag wall. The cuff 11 is provided with size adjusting means, e.g. a drawstring 14, which permits contraction of the pocket to confine the shaping member therein and also expansion of the cuff 11 to permit convenient removal of the shaping member 10. <IMAGE>
Patent GB-2039020-A (GB)
Title: Tubular structure particularly for heat exchangers
IPC: F28D7/10
Filed: 1979-12-18
Abstract: A tubular structure particularly for heat exchangers comprises a first circular cross-section tube 1 and a second multi-lobe cross-section tube 2 forcibly fitted therewithin. The tube 2 is obtained by rolling along the generatrix lines (7, 8, 9) a tube having originally the same cylindrical cross- sectional shape as the tube 1. <IMAGE>
Patent GB-2072010-A (GB)
Title: Plant-like chemical growths and apparatus to display same
IPC: A41G1/00
Filed: 1979-12-31
Abstract: The invention provides means by which plant-like decorative chemical growths are caused to form for display on means such as artificial vegetation. In one form of the invention, two interfitting sheets 10 and 11 of absorbent material are shaped to form an evergreen tree and are stood in a shallow receptacle 16 filled with a solution capable of forming the chemical growths when dried. The intermediate portions of the sheets 10 and 11 draw the solution upwardly by capillary action and the chemical growths 22 are formed at the tips of the tree-like display. The growths 22 which form at the tips are coloured by dyes impregnating the sheets in the areas of the tips. <IMAGE>
Patent GB-2068109-A (GB)
Title: Monitoring strip temperature
IPC: G01J5/00
Filed: 1980-01-21
Abstract: A system for monitoring the temperature of a strip comprises a scanning photodiode array illuminated by an image of the strip, and a computation means, in particular a microprocessor having a memory in which one or more look-up tables are stored, for converting the signals from each photodiode of the array into a measurement of the temperature at a corresponding point on the surface of the strip.
Patent GB-2070070-A (GB)
Title: Improved Adhesion of Metal Coatings to Solid Substrates
IPC: C25D5/34
Filed: 1980-04-17
Abstract: A method of forming an adherent metal surface on a substrate comprises:   (i) treating a solid substrate with at least one organofunctionalsilane, or a partial hydrolysate(s) thereof, having the general formula (I):   <IMAGE> or a mixture of such an organofunctional silane or the partial hydrolysate(s) thereof with a second silane, or a partial hydrolysate(s) thereof, which has the general formula (II): (RO)bSiR_4-b   (II> in which formulae R is an alkyl radical of 1-4 carbon atoms, R% is a difunctional hydrocarbon radical having from 1-12 carbon atoms or a -CH2CH2CH2NHCH2CH2- radical, X is an -NH2   <IMAGE> -SH, OH or Cl radical, R_ is a phenyl radical, or an alkyl radical of 1-4 carbon atoms, and a and b each have a value of 2 or 3, c has a value of 0 or 1 and a+c=3; (ii) drying the silane treated surface until the majority of volatile materials have been removed; and, thereafter, (iii) depositing a metal on the silane treated surface to form a thin continuous film or coating thereon.
Patent GB-2075060-A (GB)
Title: Electrode for Electrochemical Processes and Process for Producing Same
IPC: C25B11/14
Filed: 1980-04-23
Abstract: The electrode comprises a graphite base having, in its pores, metals or compounds of metals possessing electrocatalytical properties and being in an electric contact with graphite; and electrochemically inert organic compound insoluble in the electrolyte and having its dropping point and/or the temperature of transition to the gas state exceeding the electrode temperature during electrolysis. The electrode is produced by introducing into the graphite base pores firstly the electrocatalytic material and then the organic compound. The electrodes are used in the electrochemical production of chlorine, chlorates, hyperchlorite, possessing long service life and capable of operating at commercial current density values.
Patent GB-2074852-A (GB)
Title: Elevating swivel table
IPC: A47B13/08
Filed: 1980-05-02
Abstract: A dining table comprises a swivel plate (10) mounted on a device (16, 15, 14) for receiving bottles which can be elevated through a central opening (40) of the table top (1). The bottle receiving device (16, 15, 14) is raised and lowered by screwing a bolt 19 out of and into a threaded recess (21). The table top includes covered (24) tray- receiving cavities. <IMAGE>
Patent GB-2050658-A (GB)
Title: Method and apparatus for the design and manufacture of footwear
IPC: A43D1/00
Filed: 1980-05-14
Abstract: A method of deriving patterns for shoe manufacture, whereby leather pieces can be cut in accordance with the derived patterns for making the shoes. The method consists in using a computer to operate on three-dimensional co-ordinate information concerning (a) the shape of the shoe last and (b) the shape of style lines to produce three-dimensional co-ordinate information which is subjected to a grading program. The grading program produces three-dimensional co-ordinate information for different sizes which may be displayed in three-dimensional form and possibly modified. The individual graded co-ordinate information for each size is subjected to a flattening program to produce respective patterns.
Patent GB-2079990-A (GB)
Title: Quartz wrist-watch with sealed unit snapped into a casing
IPC: G04B37/11
Filed: 1980-07-11
Abstract: A quartz crystal wrist-watch is made up of a sealed unit containing the pilot quartz crystal 1, printed circuit board 2 complete with integrated circuit, connector 3, (liquid crystal) display 4, battery (5), watch- glass 11 and rear cover 7, the said unit being removably snapped into a casing 20. The casing 20 is adapted for the attachment thereto of a watch strap, and has an inwardly extending peripheral rim 24 to surround the glass 11, the rim 24 thus having the appearance of a bezel. The watch may have an alarm vibrator plate held by the rear sealing gasket 10. The parts of the unit are supported in a plastics holder 12 injected in a metal sleeve 13, or alternatively in a support which is entirely of plastics. The unit also carries the push-buttons used to control the circuitry and can be rapidly replaced in case of failure. <IMAGE>
Patent GB-2056027-A (GB)
Title: A Valve
IPC: F16K47/04
Filed: 1980-07-30
Abstract: A valve for fluid conduits including two cylinders 24, 26 arranged parallel to each other with their circumferential surfaces in contact, each of said cylinders having a circumferentially extending semi- circular groove 48 formed in the surface thereof the depth of which varies along its length, said grooves defining an aperture through which, in use, fluid is constrained to pass, whereby upon rotation of said cylinders relative to each other the size of said aperture varies to vary the rate of flow of fluid through said valve. The cylinders are rotated in unison in opposite directions by a pair of identical intermeshing pinion gears, one of which is caused to rotate by means of a rack. <IMAGE>
Patent GB-2083419-A (GB)
Title: Restraining V/STOL aircraft
IPC: B64F1/12
Filed: 1980-08-12
Abstract: Hold back apparatus for use with V/STOL aircraft on ships and comprising a mobile platform 10 for receiving a taxying aircraft, an aircraft wheel operated lever 13 incorporated in the platform, a detent arm 11 erectable from the platform by the lever 13, an energy storage unit 12 associated with the detent arm, and a hold back arm 20 having at one end a remotely controlled quick release device 21 for attachment to an aircraft and at the other a detent catch 22 for energizing the detent arm, the arrangement being such that an aircraft trailing the hold back arm 20 and taxying over the platform erects the detent arm 11 which catches the hold back arm and brings the aircraft to rest storing energy in the storage unit 12, so that upon quick release of the hold back arm from the aircraft the stored energy is employed to convey the hold back arm to a configuration in which it cannot normally deleteriously strike any part of the aircraft. <IMAGE>
Patent GB-2057535-A (GB)
Title: Recovery of ground drilling equipment
IPC: E21B17/042
Filed: 1980-08-21
Abstract: Drilling tubes 3 are provided with a threaded central bore 13, 14 in coupling fittings 4, 5. An extractor 16 is provided with a complementarily thread elongate member 17 which is engageable in the bores 13 or 14 for recovery of the tubes in the event of them becoming lost under ground during drilling. <IMAGE>
Patent GB-2059350-A (GB)
Title: Inking system for a printing machine
IPC: B41F31/04
Filed: 1980-09-22
Abstract: An inking system for a printing machine comprises colour zone adjusting screws 18 distributed across the width of an ink knife. A respective electric motor 6 is operable to adjust each screw 18, via a reducer 5. A respective rotary knob 23 is also provided for manual adjustment of each screw 18. To prevent damage to the motor 6 and/or reducer 5 by overdriving during manual adjustment, a torque- limiting coupling is provided between the reducer 5 and knob 23. <IMAGE>
Patent GB-2064371-A (GB)
Title: Magnetic Recording Medium
IPC: G11B5/706
Filed: 1980-11-05
Abstract: A master tape consists of a high polymer film support and a magnetic coating thereon comprising in a binder resin ferromagnetic metal powder formed by wet reduction and having a saturated magnetization of at least 90 emu/g, a coercive force of at least 1,800 Oe and a square ratio of at least 0.5. The ratio of metal powder to the binder resin is in the range 100:15 to 100:33, and the surface roughness of the magnetic coating is at most 0.10  mu m. The master tape has superior properties suiting it for magnetic printing or magnetic transfer, particularly for reproducing video tapes.
Patent GB-2063918-A (GB)
Title: Solid polymer electrolyte chlor-alkali process and electrolytic cell
IPC: C25B9/19
Filed: 1980-11-10
Abstract: Disclosed is a solid polymer electrolyte electrolytic cell, e.g., for chlorine production, where the electrodes are in compressive contact with and removable from the permionic membrane. For a preferred exemplification the anode is in compressive contact with and removable from the permionic membrane, and the cathode is bonded to the permionic membrane.
Patent GB-2064409-A (GB)
Title: Razor Blade Assembly
IPC: B26B21/22
Filed: 1980-11-28
Abstract: A razor blade assembly comprises an elongate body member including a guard portion (4) blade means support portions (6, 8) a cap portion (10), and first and second slide structures (16, 32) spaced from the center of the body member and extending transversely to the length of the body member, the slide axes of the slide structures being substantially parallel with each other, to perm it ready coupling of the assembly with a co- operating razor handle. <IMAGE>
Patent GB-2091072-A (GB)
Title: Stable fork
IPC: A01D9/00
Filed: 1981-01-16
Abstract: A stable fork for mucking out in which the fork head includes a bridge section (16) from which nine parallel tines depend (1 8). The bridge is bent in a rearward direction so that although the upper region (20) of each tine extends in a direction generally parallel to the axis of the shank (10) of the handle, these parts of the tool are laterally displaced relative to the axis of the shank through a distance typically in the range 2-4 cms. The tines are all bent at a similar position along their length between one third and one half the distance between the bridge (16) and the pointed ends (24) of the tines. The tines are bent through an angle in the range 20-40 DEG . <IMAGE>
Patent GB-2069476-A (GB)
Title: Improvements in water sterilization plants
IPC: C02F1/68
Filed: 1981-01-29
Abstract: A water sterilization plant in which a flow restrictor (16) is used in the mains water pipe to provide a pressure difference, for operating the plant. A pressure vessel (10) is filled with a reagent from a tank (12). The upper part of the vessel (10) is connected to the mains water pipe (36) at the upstream end of the flow restrictor (16). The reagent is supplied to the mains water pipe at the downstream end of the flow restrictor through a capillary tube (14), by means of the pressure difference set up. A diaphragm (50) consisting of particulate material having a specific gravity between that of the water and reagent separates the two liquids in the pressure vessel. A by-pass valve (18) acts as a means to control the pressure applied to the pressure vessel. <IMAGE>
Patent GB-2092620-A (GB)
Title: Vapour degreasing apparatus
IPC: C23G5/04
Filed: 1981-02-10
Abstract: A housing (12) contains a sump (16) located below a partition wall (18) having an opening (20) which communicates the sump with a work receiving chamber above the partition wall. An upper condenser (28) is provided in said chamber and a lower condenser (26) in said sump. A chilled coil (34) is located in the chamber above the elevation of the upper condenser (28) but below the upper lip of the housing. This serves to create an inversion blanket over the vapour zone. Between the upper lip of the housing and the chilled coil there is provided a vapour discharge port (36). <IMAGE>
Patent GB-2092754-A (GB)
Title: Sensing tilt
IPC: G01C9/06
Filed: 1981-02-10
Abstract: A system for sensing tilt relative to a reference axis uses a tilt sensitive transducer having two impedances SR1, SR2 the values of which vary differentially according to the angle and direction of tilt. Two equal but antiphase A.C. voltages are applied, respectively, to the two impedances and the current derived in each impedance is used to generate a D.C. voltage. The two D.C. voltages are of opposite polarity and are added (at R12, R13) to derive a D.C. voltage the magnitude and sign of which are dependent on the angle and direction, respectively, of tilt. R4 sets the reference axis. R14 calibrates display 17. A threshold alarm is provided. Similar arrangements can be provided for an orthogonal axis. <IMAGE>
Patent GB-2088080-A (GB)
Title: Retroreflective articles
IPC: G02B5/128
Filed: 1981-03-18
Abstract: A retroreflective article comprises two opposed support layers (1, 2) of light transmitting material. Each opposed face carries retroreflective beads (5, 6), a substantial proportion of the beads on one support layer being opposite bead free areas of the other layer. <IMAGE>
Patent GB-2075587-A (GB)
Title: Clamp for structural members
IPC: F16B2/06
Filed: 1981-03-24
Abstract: A scaffold tube (3) is secured to a flanged joist or beam (2) with a fitting (1) having a first clamp (14) which fits around the tube and a second clamp (8, 9, 30) which fits over an edge of a flange (5, 6) of the joist or beam. The second clamp of the fitting includes a projection (30) which fits between the joist or beam (2) and the tube (3) so that the fitting can be attached to the joist or beam before the scaffold tube is brought into position. <IMAGE>
Patent GB-2095701-A (GB)
Title: Preheating of steel scrap
IPC: C21C5/35
Filed: 1981-03-27
Abstract: The preheating of a scrap steel charge prior to refining in a converter is carried out by injecting fossil fuel and oxygen at sub-stoichiometric ratios into the scrap charge through basal tuyeres of the vessel and simultaneously injecting the balance of oxygen required into the vessel from an overhead lance. <IMAGE>
Patent GB-2073489-A (GB)
Title: Semiconductor integrated circuit power amplifier device
IPC: H01L27/02
Filed: 1981-04-03
Abstract: To reduce feedback and heating effects in a power integrated circuit device wherein power amplifier circuits A1, A2 of a plurality of channels are formed on a single semiconductor substrate, output amplifier circuits with a plurality of sets of power transistors Q25, Q27, Q25%, Q27% are formed at one end of the substrate, while input amplifier circuits with a plurality of sets of first-stage input transistors Q10, Q11, Q10%, Q11% are formed at the other end, and interconnections W2, W3, W2%, W3% between the output amplifier circuits and the input amplifier circuits are achieved by multi-layer conductive films 9,10 of relatively large width and thickness and thus relatively low resistance. An insulating film 11 separates these films. <IMAGE>
Patent GB-2074828-A (GB)
Title: Electric heater
IPC: H05B3/44
Filed: 1981-04-21
Abstract: An electric heater for use in an electric fire or the like, includes an insulating tube 4 such as a quartz tube, and a coiled resistance wire 5 enclosed in the insulating tube, in which the individual turns of the coiled wire 5 have a non-circular, e.g. elliptical, shape and are radially displaced from adjacent turns by spirally twisting the coil about the axis of the heater so as to decrease the time required for heating the wire to a specified temperature and improve the efficiency of heat radiation. The resistance wire 5 is made of iron- chrome-aluminium alloy so as to lengthen the life of the wire. <IMAGE>