baber/WOPTO huggingface dataset:
Patent GB-1374614-A (GB)
Title: Driver circuits
IPC: G09G3/28
Filed: 1971-12-15
Abstract: 1374614 Matrix displays WESTERN ELECTRIC CO Inc 15 Dec 1971 [16 Dec 1970] 58215/71 Headings G5C and G4H A driver circuit is connected to each conductor of a gas discharge panel with crossed conductor arrays the circuit comprising a charge storage diode 301 for applying alternating polarity signals and a semi-conductor device 302 for selectively addressing the conductor. Sustain pulses are applied periodically to all conductors. The positive portion of the signal is passed via diode 301 and charges it such that it remains conducting during the negative portion and until the charge is dissipated, when it reverts to a high impedance reverse biased state. This allows write or erase pulses to be applied which are isolated by the diode from other conductors. The time that the diode passes the negative signal is preferably the same as the duration of the positive signal. To keep the times the same two resistances and a diode may be used instead of load resistor 303. The write and erase pulses are applied between sustain pulses by circuits 81, 82 in response to TV or other display input signals. These pulses render selected transistors 302 conductive to pass pulses from sources 305. In another embodiment each driver circuit comprises a charge storage diode 312 and diodes 310, 311. The drivers are arranged in a matrix connected between conductor arrays RX1,2 ... RY1,2 ... Each diode 310, 311 is connected to a positive or negative sustaining pulse source respectively. All diodes 312 are normally positively biased and connected to a write, erase pulse generator 500. A write or erase pulse is applied by first energizing selected row and column conductors RX, RY and passing current through diode 312, then applying a positive pulse to all the drivers. This passes only to the conductor of the selected driver, which has been rendered conductive by the charge stored.
Patent GB-1410173-A (GB)
Title: Electric pulse generating apparatus
IPC: F02P7/067
Filed: 1971-12-15
Abstract: 1410173 Ignition systems MOBELEC INTERNATIONAL Ltd 13 Dec 1972 [15 Dec 1971 8 June 1972] 58258/71 and 26783/72 Heading F1B [Also in Division H3] An ignition circuit for an internal combustion engine or a timer for an engine having a fuel injection system comprises a laminated U-shaped magnetic core 10, Fig. 1, which is magnetized by direct current through a coil 11 and is mounted in proximity to a timing cam, Fig. 3 (not shown), of magnetizable material, each cam peak when in close proximity of the core causing magnetic saturation and a change of voltage across the coil. The core and coil assembly may replace the contact set in the distributer of an internal combustion engine. Coil voltage changes due to core saturation are converted into pulses for an ignition coil by the circuit shown in Fig. 4, the direct current through the coil 11 being applied from a D.C. supply Vi through a filter Rl, Cl and regulated by the combination of a transistor TR1 and a Zener diode Z 1. Such voltage changes are applied from terminal A to a stabilized transistor TR2 through a filter R5, R6, C3, C4, C5 and a capacitor C6, and then through monostable transistor stages TR3, TR4 and an output transistor TR5 to an output terminal B. A modified core structure, Fig. 5 (not shown), has a coil on each core limb, the two coils being either connected in series so as to minimize the effect of stray external magnetic field, or be so connected to the associated circuit that one coil is excited by direct current and the other acts as a transformer winding for induced pulses. The arrangement may be applied to a capacitor discharge ignition system.
Patent GB-1287408-A (GB)
Title: Improvements in or relating to band type hose clamps
Inventor: TURNER DAVID LILLEY
IPC: F16L33/08
Filed: 1968-12-11
Abstract: 1287408 Clamps NATIONAL RESEARCH DEVELOPMENT CORP 11 Dec 1969 [11  Dec 1968] 58799/68 Heading E2B A screw-operated band clamp is made by bending the band at 45 at 12, then upwardly to form a wall 13, then transversely to form an abutment wall 14 of the screw, and then back down under the band at 16 where it is secured by spot-welding or riveting. The wall 14 is inclined so as to press down on to the thread 11 of the band. In a modification (Fig. 4, not shown), the spigot 22 is replaced by a slotted head, the neck joining it to the screwbody being recieved in a slot, in this case, the screw being left-handed. In either case, the screw may be rocked upwardly to allow rapid passage of the band before tightening. The band may be plain and the screw self-tapping. In a further modification, the screw-mounting is formed by slitting the band to form two tongues which are bent up to form a V- shaped screw-housing
Patent GB-1381509-A (GB)
Title: Thermosetting moulding compositions
IPC: C08J3/24
Filed: 1971-12-20
Abstract: 1381509 Thermosetting moulding compositions FORD MOTOR CO Ltd 20 Dec 1971 [21 Dec 1970] 58978/71, Heading C3P Thermosetting moulding compositions comprise a vinyl copolymer containing ethylenic unsaturation and a crosslinking agent prepared by reacting an α,#-olefinically unsaturated monocarboxylic acid with graded rubber particles comprising (a) a core of a crosslinked acrylic polymer derived from a major proportion of an acrylate or methacrylate monomer and a minor proportion of an ethylenically unsaturated monomer containing at least two non-conjugated terminal ethylenic groups; (b) an outer shell of a polymer derived from a mixture of an alkyl acrylate or methacrylate and one or more ethylenically unsaturated copolymerizable monomers, at least one of which is an acrylate or methacrylate containing an epoxy group; and (c) an intermediate layer of a polymer derived from the monomer components of (a) and (b). The graded rubber particles are described and claimed in Specification 1,332,070. In the examples the unsaturated vinyl copolymer is prepared by reacting glycidyl methacrylate/ methyl methacrylate copolymer or glycidy methacrylate/methyl methacrylate/methacrylonitrile copolymer with methacrylic acid; or byreacting methacrylic (or acrylic) acid/methyl methacrylate/methacrylonitrile copolymer with glycidyl methacrylate. The copolymers are mixed with graded rubber particles containing epoxy groups (derived from glycidyl methacrylate) modified by reaction with acrylic or methacrylic acid, and the resultant composition is cured by heating and moulding in the presence of di-t.-butyl peroxide or t.-butyl perbenzoate, or by coating on a substrate and curing with electron beam radiation. In the latter case monomeric methyl methacrylate is also present in the coating composition. The compositions of the invention are useful in such moulding applications as automobile panels, electrical appliance housings, boat constructions and conduits.
Patent GB-1248015-A (GB)
Title: Light fixture
Inventor: MOORE BUELL
IPC: F21V29/15
Filed: 1969-05-30
Abstract: 1,248,015. Floodlamps. ESQUIRE Inc. 30 May, 1969, No. 60368/69. Divided out of 1,248,011. Heading F4R. The subject matter of this Specification is substantially the same as that disclosed in Specification 1,248,011 but the claims relate to the construction of the lamp housing.
Patent GB-1300790-A (GB)
Title: Magnetic recording and reproducing apparatus
Inventor: SUGAYA HIROSHI
IPC: G11B5/02
Filed: 1970-12-29
Abstract: 1300790 Magnetic recording and playback MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 29 Dec 1970 [29 Dec 1969] 61500/70 Heading G5R Successive straight tracks running obliquely across a moving tape 3 are scanned by a plurality of heads 29 carried on an endless belt 25 driven at a constant speed by a motor 36. The heads 29 may be embedded in a ridge 40 projecting from the outer face of the belt 25 and engage the tape 3 through an oblique slot 37 in a guide plate 31. Electrical connection to the heads 29 is made through slip loops 39 on the inner face of the belt 25 and either brushes 28, Fig. 1, or slip rings (48, 50), Fig. 7 (not shown), in one of the belt pulleys 26, 27.
Patent GB-774166-A (GB)
Abstract: 774,166. Magnetic amplifiers; circuits employing bi-stabte magnetic elements. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Aug. 18, 1955 [Aug. 19, 1954], No. 23837/55. Class 40 (4). A toroidal magnetic element is simulated by two separate plates of magnetic material, each having a hole, input windings for the two holes being connected in series, and output windings being connected in opposition. As shown, Fig. 1, the holes in the two equally thick plates 1, 2 are of different diameters d0, d1, with d1>d0, so that the output is equivalent to that of a toroid having internal and external diameters of d0 and d1 respectively. If the magnetic material is of the high resonance type having a characteristic shown in Fig. 3a, the device may be used for data-storage. In this case the undesirable slope of the characteristic at the points #1, #2 may be removed by including a further plate 12, Fig. 4, arranged to be unsaturated and having a characteristic as shown in Fig. 3b, the output due to the flux change in the plate being in opposition to that due to plate 1. The same effect may be produced merely by thickening the plate 2. Fig. 9 illustrates a matrix operating on this principle, the upper and lower elements being respectively combined to form two dimensional arrays of holes in upper and lower plates 41, 42. Storage is effected by pulsing one out of each of the pairs of leads e, f and g, h, and read-out is effected over lead n. A further embodiment, Fig. 7, using material having a characteristic shown in Fig. 6a operates as a switching arrangement comprising an A.C. input winding 19 and an A.C. output winding 22 arranged not to deliver or to deliver an output according as a saturating current is or is not delivered to winding 26. In this case the undesirable slope of the characteristic at saturation is eliminated by means of a further plate 23 having a characteristic as shown in Fig. 6c, and arranged so that the output due to its flux changes opposes that due to the plate 17. The characteristic of Fig. 6c may conveniently be produced by using a plate 23 of the same material as plates 17, 18 sandwiched between two plates 24, 25 permanently magnetized in the direction of their thickness.
Patent GB-2001844-A (GB)
Title: Shoe component manufacture
IPC: A43B13/41
Filed: 1978-06-13
Abstract: The invention relates to a method of producing insoles for shoes of the veldschoen type having outflanged margins of the upper in at least the heel end region. The insole produced has a transverse slit forming two initially separable laminae 6, 8 at least in the heel end region and an insitu moulded insert of plastics material formed between said laminae to shape and reinforce the same, marginal portions 10 of the laminae in said region remaining in contact with one another, so as to be capable of receiving stitches or like fastening means. <IMAGE>
Patent GB-2005025-A (GB)
Title: Temperature compensated oxygen sensor
IPC: G01N27/12
Filed: 1978-08-02
Abstract: A sensor 100 for measuring the O2 content in the exhaust gas of an internal combustion engine is comprised of a titania resistor 101 and a zirconia resistor 102 mounted in a ceramic insulator 10 which is mounted in a metal housing 20 adapted to be connected to the exhaust system of an internal combustion engine. The resistance of the zirconia resistor 102 varies only as a function of the temperature of the gas while the resistance of the titania resistor 101 varies as a function of both the temperature of the gas, and the oxygen in the exhaust gas to which it is exposed; accordingly, the effect of the temperature of the exhaust gas on the sensor is minimized and/or eliminated over its range of operation. <IMAGE>
Patent GB-2005768-A (GB)
Title: A centrifugal pump
IPC: F04D29/22
Filed: 1978-09-14
Abstract: The impeller blades 10 are curved and face forwardly at their outer end portions with respect to the direction of rotation of the impeller. Preferably, as shown, they face backwardly at their inner end portions. In addition to the main inlet 14, a secondary inlet 16 may be provided, liquid being drawn into the secondary inlet by the ejector effect of the main flow. <IMAGE>
Patent GB-2030451-A (GB)
Title: Anti-clostridium vaccine
IPC: A61K39/08
Filed: 1978-09-29
Abstract: An anti-clostridium vaccine comprises cell-free toxoids of Clostridium perfringens types A, B, and D, Cl. oedematiens, and Cl.septicum, and an adsorbent adjuvant (e.g. alumina gel), in a physiologically acceptable injectable aqueous carrier. The antigenic activity of the toxoids, expressed in combining units per ml of the vaccine, is as follows:-  toxoid of Cl.perfringens     2-100  type A  toxoid of Cl.perfringens     2-100  type B  toxoid of Cl.perfringens     1-80  type D  toxoid of Cl.oedematiens     1-80  toxoid of Cl.septicum      2-100. Suitably there is 1-10 mg of adsorbent adjuvant per ml of vaccine.
Patent GB-2006356-A (GB)
Title: Sliding Caliper Disc Brakes
IPC: F16D55/226
Filed: 1978-10-05
Abstract: The caliper 9 is disposed in an opening E of the support and is slidably guided on the support 7 by shoes 18 connected to the caliper and engaging in respective grooves 16 in the support. The shoes are preferably formed from hard plastics and fixed to the caliper by a stud 19 which may be hollow to house a spring biassing the shoe into the recess. Lubricant reservoirs may be formed in the shoe. The support 7 is located on one side only of the disc, pins 5, 6 secured to the support serving to guide pads 3, 4. <IMAGE>
Patent GB-2011926-A (GB)
Title: Inorganic-organic combined material and preparation thereof
IPC: C08J9/04
Filed: 1978-12-21
Abstract: An inorganic-organic combined material constituted of co-hardened inorganic and organic components is prepared by mixing a polyvalent metal salt of phosphoric acid, a hardening agent and a thermosetting resin curable with an acid catalyst and subjecting the resultant mixture to co- hardening, optionally in the presence of a blowing agent. This material has excellent nonflammability and water resistance as well as in other properties such as mechanical strength. In particular, expanded products having cell walls made of this material are suitable for various purposes, e.g. construction materials and lagging materials.
Patent GB-2012653-A (GB)
Title: Handles for pivoted lever hand tools
IPC: B67B/
Filed: 1979-01-11
Abstract: Each lever (11, 12) of a tool such as a tin opener or garlic press is provided with a handle (34) having an opening (59) to receive the lever end in form- locked or force-locked manner. Each handle (34) may be a plastics moulding and have the opening (59) formed as a groove between two spaced parallel limbs, a detent projection (38) being formed at one end of the handle to engage a hook on the lever end (33) and claws (40) being formed on the lever end (33) to engage the facing surfaces of the limbs handle. <IMAGE>
Patent GB-2012577-A (GB)
Title: A shield for a paint brush
IPC: A46B17/08
Filed: 1979-03-02
Abstract: A shield for a paint brush comprises a securing part 1 for attaching the shield to a shank of a paint brush, and a shield member 8 pivotally mounted on hooks 4. The shield member 8 protects surfaces from the bristles of the paint brush, and is pivotal upwards and away from the bristles to allow them to be loaded with paint. <IMAGE>
Patent GB-2049655-A (GB)
Title: Process for making uniform short inorganic fibres
IPC: C03C25/10
Filed: 1978-11-02
Abstract: A method of producing short silane-treated glass or mineral wool fibers with a very low shot content. The method comprises the steps of making a mass of the individual fibers and associated shot wherein the fiber diameters are in a prescribed range, but the fiber lengths and weight percent shot are greater than desired; putting the fiber mass and shot through a refiner to reduce the length of the fibers; subjecting the refined fibers and the shot to the action of a seperator to reduce the weight percent shot; and then reacting the separated short fibers with a silane. The resultant fibers are an effective reinforcing agent when incorporated into a general purpose resin.
Patent GB-2019605-A (GB)
Title: Forming relief images
IPC: G03F7/00
Filed: 1979-05-11
Abstract: A method for producing relief images, for example of monumental brasses. Brass rubbings can then be taken from the relief image, to save wear and tear on the original brass. The image is photographically reproduced on a plate having a photopolymerisable polyamide layer. This layer is then selectively etched (developed) to produce a first relief image, which can be used directly, after coating with a metal layer. Alternatively, it can be used as a mold, to produce either the desired final image, or in a preferred embodiment to produce an intermediate mould e.g. of silicone rubber or glass fibre reinforced plastics, from which the final relief image is cold cast or moulded, e.g. using an epoxy or polyester resin which optionally contains metal dust.
Patent GB-2028513-A (GB)
Title: Vehicle level detector
IPC: G01D5/14
Filed: 1979-06-19
Abstract: A vehicle level detector 6 detects a change in the elevation of a vehicle body 1 as reflected in a change in the relative distance between a suspension member 3 for wheels 2 of the vehicle and the vehicle body 1. The detector 6 comprises a magnet 17 and a magnetelectric transducer element 10, 11 disposed in opposing relationship. One of the magnet 17 and the transducer element 10, 11 is disposed for displacement relative to the other in accordance with a varying elevation of the vehicle body 1, thus permitting a change in the elevation of the vehicle body 1 to be detected by sensing the displacement. <IMAGE>
Patent GB-2053711-A (GB)
Title: Catalyst for method of preparing naphthenic acids
IPC: B01J31/04
Filed: 1979-07-10
Abstract: Catalysts for use in a method of preparing naphthenic acids, which comprises oxidising a petroleum fraction boiling in the temperature range 250-350 DEG C with oxygen in a quantity of 0.06-0.065 kg/kg per hour at a temperature of 135-140 DEG C comprise a mixture of 30-40 per cent by weight of manganese naphthenate and 60-70 per cent by weight of potassium naphthenate and are used in a quantity of 1.5-2.5 per cent of the weight of the fraction. The hydroxynaphthenic acids formed are separated off and the naphthenic acids are purified. Naphthenic acids obtained by the method are of high purity and are useful for the manufacture of naphthenic siccatives (salts of metals of variable valency) which are used as additives to lacquers and paints, and for the manufacture of alkyd resins which are the starting material for the manufacture of nitro paints and enamels.
Patent GB-2029570-A (GB)
Title: Improvements in and relating to image analysis system
IPC: G06V10/40
Filed: 1979-08-20
Abstract: In a method and apparatus for image analysis of a field of objects processor 28 generates a threshold value for characteristic parameters of the objects, e.g. their areas, dependent on information previously supplied to the apparatus, e.g. by operator interactions (using a light pen 19 or other identifying device) with an image derived from scanner 10 and displayed at 18. Selected objects falling within a given class are indicated on the display and memory 32 stores classifying decisions for the objects together with characteristic parameter values for them. These values are derived from the video signal and calculated by function computers 22, 24, etc. The threshold value is updated by each classifying decision made by the operator and once a given level of consistency is achieved, the threshold value is frozen and used for classifying future fields of objects by making the same parameter measurements and applying the same threshold criteria to the measured parameter values. Parameters measurements from a number of selected features may be stored and applied to algorithms in arithmetic unit 30 to reduce spurious parameters for determining object classification. The different algorithm decisions are then compared for consistency and the best algorithm used to determine the classification of objects in future fields. <IMAGE>
Patent GB-2032460-A (GB)
Title: Surface Treated Electrically Resistive Metal Foil for Production of Printed Electrical Resistors
IPC: C25D3/58
Filed: 1979-09-06
Abstract: A cupronickel foil of high resistivity has a micro-rough codeposit containing copper and nickel electrodeposited on a surface thereof to produce a foil which can be strongly bonded to a resinous substrate by heat-bonding or by means of an adhesive. The cupronickel foil is conveniently of 55% copper and 45% nickel. A laminate of the foil on a substrate finds particular application where the laminate is to be used in an agressive environment which can cause delamination of conventional laminates of resistor foil.
Patent GB-2034990-A (GB)
Title: Phase sensitive product detector
IPC: B61L21/06
Filed: 1979-10-09
Abstract: A phase sensitive detector receives two a.c. signals VL1, VT1 and actuates a relay TR if both signals are present at the same time and are in phase. The detector may include an optocoupler D2, PRC as shown to effect multiplication of the two signals. Alternatively a Hall Effect Device or varistor may be used. The detector is used for detecting the occupancy of a railway insulated track section, the first signal being received directly from an a.c. source, and the second being received from the same source via the track section rails. <IMAGE>
Patent GB-2035248-A (GB)
Title: Apparatus for handling rod-like articles
IPC: A24C5/352
Filed: 1979-10-31
Abstract: In a mobile reservoir system for rod-like articles such as cigarettes, trays (10) are moved in trolleys (12) and each tray is capable of receiving articles in stack formation from an overhead mass flow outlet at a combined loading/ unloading station (6, 8). The mass flow outlet is closable by a rolling gate closure device (16). Each tray (10) has parallel compartments for simultaneously receiving batches from streams (2, 4) passing from a producing machine (1) and contains captive platforms movable by drive means at the loading/unloading station to progressively lower the articles into each compartment. Articles may be returned through the mass flow outlet by reversal of the drive means and upward movement of the platform; side bands (18) may engage the articles through slots in the trays (10) to aid this upward movement. <IMAGE>
Patent GB-2037806-A (GB)
Title: Light lubricating base oils
IPC: C10G67/02
Filed: 1979-11-07
Abstract: Vacuum gas oil alone or in admixture with deasphalted oil produced from vacuum residue is hydrodesulphurized and then subjected to at least one solvent dewaxing and vacuum distillation to obtain lubricating oil fractions and then solvent extracted. Alternatively the vacuum distillation and solvent dewaxing steps may be interchanged or the vacuum distillation may be carried out after solvent dewaxing and solvent extraction. The preferred dewaxing solvent is a mixture of methyl ethyl ketone and toluene and the preferred extraction solvent is phenol, perfural or N-methyl-2- pyrrolidone.
Patent GB-2063584-A (GB)
Title: Electrical accessories
IPC: H01R33/46
Filed: 1979-11-08
Abstract: A lampholder (Fig. 2) comprises an inner moulded part (10) for carrying connection terminals and lamp contacts and having an outwardly directed flange (12). An outer part 11, and also a metal liner 30, have an inwardly directed flanges (13, 31) and lamp cap anchorages. Spring loading of lamp contacts means that a fitted lamp cap tends to hold the parts together. Other features include connection terminal blocks (17) retained in housing slots of the inner part partly by their connection screws (21) that intersect inclined wire-loading bores (20), a removable loop-in terminal unit (50 in Fig. 11) located on the inner part, and aperturing of the outer part (11) to overfit the inner part (10) with complementary configurations that ensure non-rotatable relative location. <IMAGE>