baber/WOPTO huggingface dataset:
Patent GB-1456438-A (GB)
Title: Measurement of pressure in liquids
IPC: A61B5/021
Filed: 1974-02-08
Abstract: 1456438 Measuring fluid pressure electrically SIEMENS AG 8 Feb 1974 [9 Feb 1973] 05976/74 Heading G1N [Also in Division F2]  Fluid pressure, e.g. the blood pressure of a patient 1 Fig. 1, is measured by an electrical transducer 7, selectively connectible by a manually operated valve and switch assembly 2 to atmospheric pressure via inlet 4 or a reference pressure source 18, for calibration purposes. The changeover is effected by a control member 11 which connects output union 5 to input union 3, 4 or 6 and also controls reed switches 14, 19. The fluid pressure transmitting elements, including interconnecting tubes 9, 10, 17, are filled with salt solution.
Patent GB-1470916-A (GB)
Title: Catalyticoxidation of calcium sulphite
IPC: C04B11/26
Filed: 1975-02-12
Abstract: 1470916 Calcium sulphate hemihydrate FELS - WERKE PEINE - SALZGITTER GmbH 12 Feb 1975 6025/75 Heading C1A CaSO 3  is oxidized to alpha-CaSO 4  . ¢HO 2  using oxygen or air as the oxidizing agent using as catalyst an iron II or iron III sulphate (or mixture thereof); the oxidation is performed either hydrothermally at 100-180‹ C. or in CaCl 2  solution at #75‹ C., with suitable adjustment of the pH to ensure the presence of HSO 3 - ions.
Patent GB-1246860-A (GB)
Title: Direct current converter
IPC: H02M7/5383
Filed: 1969-02-05
Abstract: 1,246,860. Transistor oscillator circuits. WANDEL U. GOLTERMANN. 5 Feb., 1969 [10 Feb., 1968], No. 6081/69. Heading H3T. [Also in Division H2] A D.C.-D.C. converter comprises a pair of switching transistors arranged to connect the primary of a transformer alternately to the positive and negative terminals of a D.C. supply and including a series resonant circuit, tuned to the operating frequency, connected on the primary side of said transformer. As shown in Fig. 1, transistors 42, 43 alternately connect the primary 40 of a transformer to the positive and negative terminals of D.C. supply 44 under control of regenerative feedback from a further transformer 41. A series resonant circuit comprising capacitor 45 and inductor 40a is included in the primary circuit. The peak-peak voltage is limited by a pair of diodes (Figs. 2-7, not shown) having their centre tap connected to the mid point of circuit 40a, 45. Inductor 40a may be wholly or partly formed by the transformer leakage inductance. The secondary voltages are rectified to provide D.C. supply 48, 49. In Fig. 6 (not shown) and Fig. 7, the D.C. output voltage is rectified by a pulsewidth modulating transistor 101 controlled by a circuit 104. In Fig. 4 (not shown) the tuning is adjustable by means of a transductor (72), connected across capacitor 45, variation of which determines the maximum short-circuit current. In Fig. 8 (not shown) the series resonant circuit 45, 40a is formed by a T-network of specified parameters so that the circuit has a constant current characteristic (Fig. 10, not shown); the inductances of the T-network or the tuning of the control transformer may be such as to minimize the effective storage time in the switching transistors.
Patent GB-540138-A (GB)
Title: Improvement in mechanism for drawing cast fibres
IPC: D01H5/22
Filed: 1940-04-04
Abstract: 540,138. Drawing bast fibres. HAIN, M. April 4, 1940, No. 6112. Convention date, July 12, 1939. [Class 120 (ii)]. In mechanism for drawing bast fibres, a driven pressure roller and two coacting freely rotating rollers yieldingly urged against the driven roller are mounted between the drawing and retaining rollers to impose pressure on the sliver the speed of the driven pressure roller being between the speeds of the drawing and retaining rollers and the zone of pressure exerted on the sliver by the freely rotating rollers being closer to the nip of the retaining rollers than to the nip of the drawing rollers; the nip between the pressure roller and one of the freely rotating rollers is preferably nearer the nip of the retaining rollers than the nip between the pressure roller and the other freely rotating roller is to the nip of the drawing rollers. As shown the freely rotating rollers 11 coacting with the driven roller 10, disposed between the drawing rollers 1, 1a and the retaining rollers 6, 6a are mounted in a carrier 12 pivoted in the end of a lever 13 pivoted on the frame 4 and carrying a weight 14; the roller 10 is driven by gearing at a speed between the speed's of the retaining and drawing rollers and the distance between the nips x, x<SP>1</SP> of the rollers 11 with the roller 10 is less than the length of substantially any fibre in the sliver. A hand lever 22, pivoted in a fixed bracket 20, has a cam surface 22a which engages a member 21 on the bracket to clamp the sliver and stop delivery when the lever is depressed on the breakage of the sliver between the drawing rollers and the spinning spindle; the lever is connected by a link 24 to a bell crank fever 23 carrying a depending link 25 pivoted to the lever 13 and having a projection 25a under the lever 8 carrying the retaining roller 6a so that when the lever is moved to clamp the sliver the roller 6a is moved away from the roller 6 and the lower roller 11 from the roller 10. Specification 407,690, is referred to.
Patent GB-492143-A (GB)
Title: Improvements relating to paper-making machines
IPC: D21F3/10
Filed: 1938-02-26
Abstract: 492,143. Suction rolls of paper-making machines. RUSSELL, D., and HAPPER, J. R. Feb. 26, 1938, No. 6123. [Class 96] A suction roll of a paper-making machine has a stationary shaft 1 connected with a suction pump &c., and perforations 2 between walls 6 of a suction compartment opposite that part of the shell 3 embraced by the felts 5, and is wound with two opposed wire-helices 10 lying partly in grooves of the shell 3, to spread the felt 5 and allow some air to enter between the shell and felt to aid in drying the felt. Packing may be interposed between the walls 6 and the shell 3.
Patent GB-197767-A (GB)
Title: Posts for attachment to tables, shelves and the like
IPC: A47G29/093
Filed: 1922-03-02
Abstract: 197,767. Honey, J. March 2, 1922. Table games.-Posts 1 for use in connection with table tennis or for other purposes are detachably secured t o tables or shelves by means of rubber-cased clamps 9 the upper ends of which are held in slots 10 bv a tension spring 6 while the lower ends 11 engage perforations in a distance piece 12. The spring 6 is housed in a boring 5 and the upper end may be attached to an ad justing screw 15.
Patent GB-851551-A (GB)
Title: Improvements in method of adhering butyl rubber to metal
IPC: C08J5/12
Filed: 1958-02-26
Abstract: Butyl rubber is cured on, and thus adhered to, a cuprous metal base by vulcanizing with a resinous 2,6-dimethylol-4-hydrocarbyl phenol and sulphur.  Optional ingredients are accelerators for the phenol curative, such as metal halides, polychloroprene, chlorosulphonated polyethylene and chlorinated paraffin wax, and fillers such as carbon black, cellulose flock and zinc oxide.  The butyl rubber may be unmodified or may be modified by the inclusion of other monomers (e.g. chloroprene, allyl chloride or methallyl chloride) or by halogenation.  The butyl rubber composition may be wrapped round a wire or applied to other metal shapes in the form of a sheet and, if desired, may be reinforced with fabric.  The layer formed may act as an intermediate layer for bonding conventionally compounded rubber. Applications specified are laminates, wire reinforcements in manufactured articles, tyres, conveyer belts, inner tubes, footwear, and lined pipes and tanks.  Specifications 718,768, 727,717, 733,134 and 733,138 are referred to.
Patent GB-370140-A (GB)
Title: Improvements in and relating to deep-sea electric telephone cables
IPC: H01B7/14
Filed: 1931-02-27
Abstract: 370,140. Submarine cables. SICHTERMANN, E., Rodenkirchen, Rhineland, Germany. Feb. 27, 1931, No. 6259. Convention date, Feb. 27, 1930. [Class 36.] A deep sea telephone cable comprises a rope formed of wedge-shaped rubber or guttapercha strands b, c having paperair insulated conductors a, preferably arranged in quads, accommodated in grooves formed between adjacent strands, as shown. A lead sheath d and armouring e complete the cable.
Patent GB-280085-A (GB)
Title: A process for preparing an artificial asphalt material from the natural constituentsof mineral asphalt
IPC: C04B26/26
Filed: 1927-03-07
Abstract: 280,085. Dicker, S. G. S., (Naamlooze Vennootschap Nederlandsche Bims-Cement-en Asphaltindustrie). March 7, 1927. Artificial asphalts. - Liquated bitumen is mixed with a porous filler under heat and at a pressure above that of the atmosphere. Ground natural limestone with or without burnt limestone is heated in a mixer at about 80‹ C. and under a pressure of 3-5 atmospheres with 9-12 per cent bitumen dissolved in benzol, carbon disulphide, ligroin or carbon tetrachloride. Stilllime, tuff, infusorial earth, trass, or dolomite may be used instead of limestone.
Patent GB-305840-A (GB)
Title: Improvements in or relating to gramophone cabinets
IPC: G11B33/02
Filed: 1928-02-29
Abstract: 305,840. Hibbard, C. G. Feb. 29, 1928. Lamp in gramophone cabinet. - A switch whereby an electric lamp located in a gramophone cabinet is switched on or off automatically by opening or closing the lid of the cabinet comprises a spring- pressed contact finger f and a lever arm e, both fixed on the same pivot pin h, the arm e being disposed in a recess b in the wall c of the casing to which the lid d is hinged. The finger f is moved by the spring i against a fixed contact j in the lamp circuit when the arm e is allowed to rise by the opening of the lid, and the circuit is broken when the lid is closed and presses down the arm e.
Patent GB-591488-A (GB)
Title: A new or improved varnishing process
IPC: B29D7/01
Filed: 1940-04-08
Abstract: A continuous film is made by applying to a rigid surface, e.g of wood or metal, a fabric made of threads or ribbons of artificial material, e.g. celluloid, viscose or synthetic resin, liquefying the fabric by the action of heat or a solvent and separating the film from the surface.
Patent GB-159414-A (GB)
Title: Improvements in or connected with acetylene generators
IPC: C10H15/12
Filed: 1920-03-02
Abstract: 159,414. Rushen, P. C., (Air Reduction Co., Inc.). March 2, 1920. Solid supply to liquid; preventing entry of air or gas into or escape of gas from generator during charging; gas-relief valve of generator, maintaining in an operative condition. -In a carbide-to-water acetylene-generator, the connection 19 between the gas motor 27 and the mechanism 8, 9, 10 for delivering carbide from the feed-table (not shown) is wholly enclosed within a casing 14 open to the pressure of the generated gas in order that leakage of water or gas between the casing 27<1> containing the motor and the generating-chamber 5 may be obviated without the employment of stuffing-boxes. As shown, the motor drives through spur gearing 22, 23, and the driving- shaft 19 is brought into or out of engagement with the driving-mechanism 8, 9, 10 by a clutchsleeve 12 operated by a handle on the exterior of the generator. For starting the generator initially, the impeller wheel 27 is arranged to be turned by a hand wheel 28 which can be pressed inwards so that its clutch-part 30 engages a clutch-member 31 on the wheel. The gas is delivered to the lower part of the motor-casing, and the rate of generation is controlled as heretofore by by-passing a portion of the gas round the motor, according as the pressure increases; but in the present construction the pressure acts on a diaphragm 37 connected by multiplying-lever gear 46 to a valve 51, the tension on the diaphragm being controlled by a spring 39, adjusted by a screw 42; on opening of the valve, due to an increase of pressure, a portion of the gas escapes between the casing 27<1> and a partition 54<1>. The gas passes from the upper part of the casing through a non-return valve 56, and above this, passes through separator plates 61, 62 for removing water spray; and from here the gas passes through a main plug-valve 67, and then through a purifier 70. The securing-means 90, 91 for the cover 98 of the purifier are connected by means of an arm 97, link 96, and shield 94, in such a manner that the holding-down nut 93 is not exposed-and therefore the cover can not be removed-except when the plug-valve 67 is closed. At the outlet the generator is provided with an automatic valve 81, which opens to relieve excess pressure, and is under the control of a spring-pressed diaphragm 75; and in order that this valve shall not adhere to its seating, a cam 87 forming part of the handle for actuating the valve 67, is arranged to engage the projecting end of the valve stem 84 so as to lift the valve 81 off its seating each time the main valve 67 is actuated.
Patent GB-397914-A (GB)
Title: Improvements in or relating to the stabilisation of chlorinated hydrocarbons
IPC: C07C17/42
Filed: 1932-03-03
Abstract: The decomposition of chlorinated hydrocarbons with the production of substances of acid character is checked by the addition of amylene in such proportions as 0,001-0,1 per cent by weight to the chlorinated hydrocarbon.  It is preferred to apply the stabilizer in the form of a strong stock solution in the particular chlorinated hydrocarbon to be stabilized, a suitable volume of this solution being diluted with the bulk of the material to be stabilized.
Patent GB-775879-A (GB)
Title: Coated polyester fibre fabrics
Inventor: ABBOTSON WILLIAM
IPC: D06M15/564
Filed: 1954-03-05
Abstract: 775,879. Coated polyester fabrics. IMPERIAL CHEMICAL INDUSTRIES, Ltd. Feb. 23, 1955 [March 5, 1954], No. 6474/54. Class 140. Polyester textile fabric is coated as described in Specification 775,878 according to which there is applied to a textile fabric a composition comprising a polyester (a polyhydric alcoholpolybasic acid condensation product) a " mixed " polymer (a polyhydric alcoholaliphatic dicarboxylic acid-aromatic monocarboxylic acid condensation product) and an organic polyisocyanate, said fabric thereafter being subjected to a heat treatment.
Patent GB-445603-A (GB)
Title: Improvements in or relating to sheet metal buckets, drums or like containers
IPC: B65D25/46
Filed: 1935-03-01
Abstract: 445,603. Metal drums. FRANCIS, J. H. E., Thames Ironworks, John Penn Street, Lewisham, London. March 1, 1935, No. 6477. [Classes 21 and 66] A sheet-metal drum adapted when empty to serve as a pail is formed with an upper part or neck of reduced diameter provided with a flanged head c of dished form, the flange being grooved at c<1> to receive a gasket ring and the upper edge c<3> being adapted to seat on the mouth curl a<4>. After insertion the neck is annularly indented at a<5> to spread the gasket and afford a hermetic joint, the lower edge coming beneath the indentation a<5>. The head is formed with an inwardly inclined flanged opening fitted with a revoluble spout e which may have a removable cover e<1>, the opening being sealed by a tagger closure f which may be annularly weakened at f<3>. A boss c<5> is formed with a central depression adapted to be pierced to afford a vent opening. In the case of drums for holding grease a central flanged opening provided with a lever-lid may be substituted for the opening shown.
Patent GB-1004934-A (GB)
Title: Automatic pipe cutting apparatus
IPC: B23K7/00
Filed: 1964-02-17
Abstract: 1,004,934. Cutting by fusion. VASKAWA DENKI SEISAKUSHO KABUSHIKI KAISHA. Feb. 17, 1964, No. 6485/64. Heading B3V. Apparatus for cutting pipes 1 along a joint line comprises means 2 for supporting and rotating the pipe, a cutting means such as a gas torch movable axially of the pipe during its rotation and an electrical circuit C for controlling the axial movement during this rotation in dependence upon the radii of the two pipes and the joint angle. A chuck 2 is driven by motor M 1  which also drives a detector 4 whose output corresponding to the angular displace ment #t controls the slider of a resistor P 2 . A slide 6 for the cutting torch is driven by screw 8 and gearing 7 from a motor M 2  which also drives a detector 9 whose output corresponding to the actual axial displacement is passed through transducer 10 to amplifier A 1 . A knob 12 is used to pre-set a potentiometer VR 1  according to the smaller pipe radius r; a knob 13 pre-sets a potentiometer VR 2  according to the larger pipe radius R; a knob 11 selects whether the end of a branch pipe or a hole in a main pipe is to be cut; a knob 14 pre-sets potentiometers P 3 , P 6  according to the joint angle # and a knob 15 determines the cutting speed. The amplifier A 1  thus receives voltage signals V 1  and V 2  corresponding to the setting of the various parameters and its output drives the motor M 2  and hence the cutting torch. The edges of the pipe end or of the hole in the main pipe may be bevelled by varying the angle of the torch, Figs. 2, 3 (not shown), by means of a selsyn transmitter system S 1 , S 2 . The cutting speed is maintained constant by a detector B and control means F.
Patent GB-1467789-A (GB)
Title: Granulate containing red phosphorus and a binder for the flame proofing of plastics
IPC: C09K21/14
Filed: 1975-02-17
Abstract: Safe handling of red phosphorus when used as a flameproofing agent for flameproofing plastics is improved if the pulverulent red phosphorus is granulated together with a binder in the form of waxes or similar substances and optionally further additives which favour the flameproofing action of red phosphorus, and the granules are incorporated into the plastic.
Patent GB-393383-A (GB)
Title: Improvements in spool-holders
IPC: A47F13/04
Filed: 1932-03-04
Abstract: 393,383. Holders for spools of twine, thread, &c. EAST, F. H., 1, Marshall Street, and EAST, V. K., 12, Blackfriars Road, both in King's Lynn, Norfolk. March 4, 1932, No. 6621. [Class 18.] A spool-holder comprises a closed rectangular frame a formed of metal strip with openended slots b in its side members to receive the ends c of the spool spindle, and with an aperture h in its lower member through which the twine, thread, tape, wire or the like on the spool may be withdrawn, and a spring-controlled member d bearing on the surface of the spool maintaining the spindle in the slots. The holder may be suspended from a hook g or screwed to a wall or other surface, or a number of holders may be secured together in one framework. The member d may be a plate substantially the width of the spool mounted on a rod e and governed by a spring f. The sides of the member d may be out away to prevent contact with the sides of the spool when the device is used for a spool of tape. The member d governs the rotation of the spool and prevents over-running. More than one spring f may be employed.
Patent GB-871580-A (GB)
Title: Solutions of nitrogen-containing high linear condensation polymers
IPC: C08J3/09
Filed: 1958-02-28
Abstract: A high linear condensation polymer containing nitrogen atoms in the chain, in which polymer at least 50% of the structures joining the nitrogen atoms (other than:  <FORM:0871580/IV (a)/1> groups) are structures which contain one or more arylene nuclei to which the nitrogen atoms are directly attached, is dissolved in a solvent which contains in solution an inorganic salt which dissociates to form chloride or bromide ions, a solution of 1/100 of an equivalent of said salt in one litre of said solvent having a specific resistance of less than 5,000 ohm-centimetres at 20 DEG C., and said polymer being capable of forming a solution of concentration of at least 0,5% by weight in the solvent at 20 DEG C. in the absence of the salt. Polymers specified are the polyamides formed from m-phenylene diamine and adipyl, sebacyl or isophthaloyl chlorides or from bis (p-aminophenyl) methane and isophthaloyl chloride: the polyurethanes formed from bis (p-aminophenyl) methane, 2, 2-bis(p-aminophenyl) propane or p-phenylene diamine and the bischloroformates of 4, 41-diphenylolpropane, 2, 2-dimethyl-1, 3-propanediol or ethylene glycol: the polyureas formed from 2, 5-dimethyl piperazine, p-phenylene diamine or m-phenylene diamine and 2, 6-toluene diisocyanate or 1, 6-hexamethylene diisocyanate: and the polyureylenes, e.g. prepared by reacting 2 moles polytetramethylene oxide (M.W. 1000) with 1 mole of toluene-2, 6-diisocyanate followed by reacting 1 mole of the reaction product with 2 moles of bis(4-isocyanatophenyl) methane and finally reacting 1 mole of this reaction product with 1 mole of hydrazine.  Particularly suitable solvents are dimethylformamide, dimethylacetamide, N-methyl-2-pyrrolidone and dimethylsulphoxide.  The salts mentioned, including those used in the non-comparative examples, are LiCl, LiBr, CaCl2, CaBr2, NaBr, NH4 Br, MgCl2 an SrCl2.  The presence of the salt results in increased solubility of the polymer in the solvent, due to complex formation between the polymer and the salt in the presence of the solvent.  The polymer solutions possess film- and fibre-forming properties. Specifications 871,578 and 871,581 are referred to.
Patent GB-433479-A (GB)
Title: Improvements in and relating to door locks
IPC: E05C1/16
Filed: 1934-03-07
Abstract: 433,479. Latches. PARKES, S. R., Pretoria Works, New Road, Willenhall, Staffordshire. March 7, 1934, No. 7189. [Class 44] A latch particularly adapted for use on either right-hand or left-hand doors of vehicles comprises a casing 1 pressed up in box form for surface attachment, a latch bolt 2 urged to shut position by a pair of springs 5, and a horizontal pivoted inside handle 4 operating a follower to retract the bolt when moved in either direction, the whole being symmetrical about a horizontal central line. The follower may also be operated by an outside handle and means are provided, engaging the inside handle, to hold both handles against operation. As shown, said means comprises a plate 7 extending out of the casing at both ends to provide finger-pieces by which it may be moved upwards or downwards, plate 7 having pins 11 engaging inclined slots 9 in a second plate 6 which thus receives horizontal movement by operation of plate 7, causing a recess 10 in the edge of plate 6 to embrace, or be released from, the shank of handle 4. The plates 6, 7 are guided by pins engaging slots 8, 12. According to the Provisional Specification, locking may be effected by a rotatable vertical spindle, at the rear of the casing, having projections which engage the internal handle, or by a horizontal plunger. As the bolt head can move inwards without affecting the follower, the handles may be locked against movement before the door is closed.
Patent GB-249521-A (GB)
Title: An electrically or otherwise illuminated reading glass
IPC: G02B25/02
Filed: 1926-03-16
Abstract: 249,521. Schaaff, E. March 20, 1925, [Convention date]. Magnifying - appliances; microscopes.-A reading glass is provided with illuminating means placed between the glass and the object viewed or at a distance therefrom, optical systems being provided in the latter case to direct the light so that an effective light source is between the glass and the object. The glass may comprise a lens or lenses and a frame of any desired shape, and the frame may carry electric lamps, or electric lamps 3, Fig. 2, and reflectors 6. The handles of the glass may accommodate leads for the lamps, or a dry battery 7 supplying the lamp current. Fig. 3 shows a light source at the centre of a system of tubes 8 each carrying a reading glass provided with a reflector 6, the ends of the tubes constituting the effective source of light. Lenses 9, or lenses and prisms, may be provided in the tubes. The framework may comprise parts 2, 2<1>, Fig. 6, relatively adjustable by micrometer screws 10. The illumination may be effected by daylight. The invention is stated to be. applicable to microscopes.