baber/WOPTO huggingface dataset:
Patent GB-1385224-A (GB)
Title: Electric transformer
IPC: G05F3/06
Filed: 1972-03-03
Abstract: 1385224 Voltage regulating transformers WESTINGHOUSE ELECTRIC CORP 3 March 1972 [23 April 1971] 10080/72 Heading H3X [Also in Divisions H1 and G3] The invention provides a readily adjustable core construction for a parametric voltage regulating transformer. A known device whose manner of operation is described in patent Specification 1,308,966 is shown in Fig. 1, and has input and output windings 46, 52, the latter being connected to a capacitor 54 to form a resonant circuit. The core leg 26 normally prevents interaction between the input and output windings, but during a small part of the input waveform cycle, say 15 degrees, this leg saturates and energy is coupled from the input to the output. Because the input and output are isolated except for this small part of the cycle the voltage stabilization and filtering are high. The present invention provides core structures in which the air gap 60 is readily adjusted to optimize the waveform and stability of the output.  One embodiment is shown in Fig. 4, and has the air gap defined by non-magnetic spacers at 96 and 98, these spacers being replaceable by ones of different thickness. The core is made by winding a length of suitable material, e.g. grain oriented silicon steel, to form a region which encircles the input winding, a region which encircles the output winding and a region which surrounds the first two regions; the structure is cut to separate the central region 72 from the input and output regions 64, 68, the windings being slid on to these latter regions before reassembly. The spacers 96, 98 may then be chosen as required. In another embodiment, Figs. 5, 6, 7 (not shown), two C cores are made by winding and cutting an oval core; these cores carry the input and output windings, and are butted against a magnetic shunt and spacers which act in a manner similar to the central region of Fig. 3. Fig. 8 shows an alternative where the C cores are replaced by wound E cores separated by a laminated plate 154 and spacers 160. The windings (not shown) are on limbs 170, 176. These E cores may be laminated structures, Fig. 9 (not shown). The central limbs carrying the windings may be of twice the area of the other limbs, Figs. 11, 12 (not shown). In Fig. 14 a laminated structure is shown, using modified E laminations with L laminations. It will be seen that the laminations alternate so that one E lamination overlies an L lamination and vice-versa. The assembly is clamped by bolts through the holes 290, leaving a gap between the lamination ends at 276. By making the bolt holes oversize or elongate the laminations can be moved to adjust the gap size. The capacitor may be tapped into the output winding, or may have a separate output winding, Figs. 7, 10, 13 (not shown).
Patent GB-1288192-A (GB)
IPC: C07D501/06
Filed: 1971-04-20
Abstract: 1288192 Preparation of penicillins and cephalosporins TAKEDA YAKUHIN KOGYO KK 20 April 1972 [20 April 1970 18 Aug 1970] 10133/71 Heading C2A A process for the preparation of penicillins and cephalosporins comprises reacting an amino acid of general formula: NH 2 -A, wherein A represents 2,2-dimethyl-3-carboxy-penam (6) group or a 3-substituted-4-carboxy-3-cephem (7) group, or a salt thereof, with a dialkoxydihalogenosilane or an alkylenedioxy-dihalogenosilane; reacting the resulting product with an acylating agent; and subjecting the thusacylated product to hydrolysis. The amino acid may be 6-aminopenicillanic acid, 7-aminocephalosporanic acid or 7-aminodesacetoxycephalosporanic acid. The 3-substituent may be methyl, alkoxymethyl, acyloxymethyl, acylthiomethyl, quaternary ammonium methyl or a heteroaryl-thiomethyl group. Examples of dihalosilanes which may be used are dimethoxydichlorosilane, diethoxydichlorosilane, ethylenedioxydichlorosilane or propylenedioxydichlorosilane.
Patent GB-546587-A (GB)
Title: Improvements in or relating to heavier-than-air aircraft
IPC: B64D5/00
Filed: 1941-08-09
Abstract: 546,587. Aircraft carrying auxiliary aircraft. BURNEY, Sir C. D. Aug. 9, 1941, No. 10155. [Class 4] An aircraft, which may be an amphibian or an aeroplane solely for use over sea or land, carries within its main plane a series of auxiliary aircraft which can be launched or re-secured during the flight of the main machine, the auxiliary aircraft having rear propellers as described in Specification 546,588 which remain outside the trailing edge of the wing and may assist in the propulsion of the carrier machine when necessary. As shown, the aircraft comprises a main wing upon a D-shaped spar 2 at the leading edge extending from tip to tip. Two booms 4, secured to the spar 2, support the tail planes, and beneath each boom is pivoted at 29 a float 12 connected to the machine by a shock-absorber 27. Compartments 14 in each float accommodate retractable wheels 13. The upper ends of the compartments are closed, and means for admitting compressed air to drive out any water that may enter may be provided. A structure 25 at the top of the float moves within a fairing 26 beneath the wing. The floats contain the crew's quarters and companion ladders 30, 31 give access to the wing. The pilot's cabin 10 is at the centre of the wing, and engine nacelles 3 are built on to the spar 2. Gun turrets 27, 32 are provided at opposite ends of each float, two further turrets 34 at the ends of the, booms, and a turret 35 behind the pilot's cabin. Four auxiliary aeroplanes are shown with low wings 40, Fig. 8, fitting into recesses shaped to receive them beneath the main wings. Each auxiliary aeroplane has a hook 49, Fig. 14, adapted to engage a trapeze 48 carried by a braced structure 43-movable into and out of the wing by a jack 45. When the hook has engaged the trapeze, two steadying frames 51 are moved by a jack 50 to engage the upper surface of the auxiliary aircraft, after which it is drawn up into the wing. Instead of engaging the trapeze directly, a cable carrying a ring may be paid out, a paravane holding the ring at a fixed depth below the aircraft. When the hook of the auxiliary aircraft has engaged the ring it is drawn up by the cable into engagement with the trapeze. Bombs and torpedoes are carried in the central portion of the wing.
Patent GB-1522784-A (GB)
Title: Foamed printing pastes
IPC: C09D11/03
Filed: 1977-03-10
Abstract: A printed paper is produced by applying aqueous printing pastes, in a foamed form, onto the paper to be printed. As the colorant, these printing pastes contain a pigment dye or a disperse dye, but may also contain thickeners and surfactants. The present novel process permits application of aqueous printing pastes which are free from organic solvents, and consequently uniform coatings and prints which are very level (even) are obtained.
Patent GB-1276762-A (GB)
Title: Memory devices
IPC: G11C17/02
Filed: 1970-03-03
Abstract: 1276762 Read only memory SOC ALSACIENNE DE CONSTRUCTIONS ATOMIQUES DE TELECOMMUNICATIONS ET D'ELECTRONIQUE 3 March 1970 [3 March 1969] 10179/70 Heading G4A Read only memory has a common support having a base 20 of a magnetic material such as a ferrite one face 20<SP>1</SP> of which carries a matrix array of electro-magnetic field generating regions 21 substantially surrounded by conductor interrogation loops 24 each having a pair of half loops. The loops in each column are connected in series and are coupled to a diode 23 at one end and to column amplifiers 26, 26<SP>1</SP>, 26<SP>11</SP>, 26<SP>111</SP> and to row amplifier 27. The opposite face of the base is covered with a metallic layer acting as a screen. A matrix array of electro-magnetic field sensing regions substantially surrounded by read-out loops 24 similarly to the interrogation loops is mounted on the face 20<SP>1</SP> and separated from the other matrix by an insulator. The loops of the read out columns are connected in series and the columns extend perpendicular to the rows of the interrogation matrix. A coupling sheet 3 having a ferrite base 28 has one face 28<SP>1</SP> entirely metallized and has the other face 28<SP>11</SP> contiguous with base 20 during read out. Face 28<SP>11</SP> is metallized but has openings 29 in the metallization, the openings representing binary 1 and being aligned with and having slightly larger dimensions than the regions. The coupling sheet may be split into elements each representing a binary word and may be marked to indicate the nature of the word and each plate may have a metallic screening layer on all four edges. A further embodiment (Fig. 4, not shown) has conductors on flexible sheets folded in zig-zag fashion arranged on supports and having coupling plates held on the supports and inserted in the folds of the sheets. The coupling plates may be marked to indicate their contents.
Patent GB-288218-A (GB)
Title: Improvements in electric current distributing and reversing devices for ringing swinging bells
IPC: G10K1/34
Filed: 1928-04-04
Abstract: 288,218. Piton, A. April 4, 1927, [Convention date]. Reversing-arrangements.-Electric apparatus for swinging bells comprises a switching arrangement adapted to reverse the direction of rotation of the driving motor each time the direction of swing changes, and controlling-mechanism to limit the amplitude of swing. On the shaft 1. which is either the bell shaft or a shaft connected or geared thereto, is frictionally mounted an arm 2 carrying a contact 14 adapted to engage one or other of two fixed contacts 3, 4 according to the direction in which the bell is swinging. When the contact 3 is engaged, the circuit of an electromagnetic switch, Fig. 3, is closed and the motor is operated in one direction. When the other contact 4 is engaged, a second electro-magnetic switch is operated and the direction of rotation of the motor is reversed. The mechanism for controlling the amplitude of swing comprises two cam-actuated levers 7, 8, Fig. 1, adapted to control the switch arm 2 to break the contact when the angle of swing exceeds a predetermined limit. The levers are connected so that they move in unison, and a pin 6 on one of them mounted on the shaft 1 and is oscillated by studs engages a cam 13, Fig. 2, which is loosely 17 projecting from a disc 27 fixed to the shaft. When the angle of swing exceeds a predetermined angle, the bevelled end 10 of one or other of the levers engages a pin 5 on the contact arm 2 and moves the arm to break contact. If the swing is so great that the levers are raised to the horizontal position shown in Fig. 1, the pin 5 engages alternately in notches 9 in the levers and is prevented from making contact during any part of the swing.
Patent GB-826024-A (GB)
Title: Improvements in or relating to separators for galvanic dry cells
IPC: H01M2/16
Filed: 1956-04-04
Abstract: 826,024. Separators for galvanic dry cells. UNION CARBIDE CORPORATION. April 4, 1956 [April 18, 1955], No. 10249/56. Class 96. [Also in Group XXXVI] A separator for a primary galvanic dry cell comprises a bibulous anode-contacting film, of the kind described in Specification 603,927, [Group XXXVI], applied to a relatively smooth, ionically permeable, high-density, super-calendered supporting sheet of paper containing between 60 and 100, e.g. 80%, by weight, of mechanically defibrillated cellulosic fibres, e.g. kraft, alpha cellulose or rag fibres, and between 0 and 40%, e.g. 20%, of an alkaline-soluble, partially water-soluble cellulose ether, e.g. methyl-, hydroxyethyl- or carboxymethylcellulose. Methyl-cellulose ethers having methoxy contents ranging between 12 and 29% by weight are suitable. The supporting paper may have a density between 0.6 and 1.4 g. per c.c. and an air-permeability between 5 and 1,000 seconds, Gurley.
Patent GB-251959-A (GB)
Title: Improvements in beneficiation of ores
IPC: C22B3/00
Filed: 1926-04-19
Abstract: 251,959. Crowell & Murray Co., (Assignees of McCormack, C. P). May 5, 1925, [Convention date]. Roasting and calcining furnaces. - Iron ores containing alumina, chromium, and nickel, such as the soft ores of the north of Cuba, are treated to produce an iron oxide ore suitable for blast furnace treatment by roasting with sodium carbonate under oxidizing conditions and leaching to remove sodium aluminate and chromate and subsequently roasting with pyrites to sulphatize the nickel, which is dissolved by a second leaching operation. The manganese present may be left in the residue. The finely-ground washed ore is mixed wet with sodium carbonate in a mixer 3 and fed on to a perforated pan conveyer 5 passing under a drying-hood 6 and roasting-hood 7 and over suction-hoods 8, 9, 10. The hood 7 is heated by coal or oil burners or electric heaters and the hot oxidizing gas is drawn downwards through the ore to the hood below. The drying- hood 6 is fed with waste gases from the roasting- hood, and acts in a similar manner. The dried ore is roasted at 750-900‹ C., and then passes on to the cooling zone where cold air is drawn through it by the suction-hood 10. Specification 112,615, [Class 82 (i), Metals, Extracting &c.], is referred to.
Patent GB-1175332-A (GB)
Title: Improvements in or relating to Internal Combustion Engines.
IPC: B24B15/08
Filed: 1968-03-04
Abstract: 1,175,332. Valves. KLOCKNER-HUMBOLDT-DEUTZ A.G. 4 March, 1968 [11 March, 1967], No. 10311/68. Heading F2V. [Also in Division F1] A poppet valve 4 is rotated during closing by a cap 9 connected to the valve stem through a universal joint 10 and through a free wheel device 11 of a member 13 engaging an inclined slot 14 in a stationary member 15. Movement of member 13 in the slot 14 as the valve closes produces rotation of the valve whereas movement in the opposite direction as the valve opens does not transmit rotation to the valve because of the free wheel 11. The inclination of the slot 14 in relation to the valve axis is adjustable manually by a lever 16.
Patent GB-473073-A (GB)
Title: Improvements in connection with mechanically operated sun blinds or awnings
IPC: E04F10/06
Filed: 1936-04-08
Abstract: 473,073. Sun - blinds. PAGE, A. C. April 8, 1936, No. 10329. [Class 20 (iii)] A sun-blind or awning of the kind described in Specification 416,741, [Group XIV], has the outer and inner members A, B of each telescopic arm coupled by chains so that on the opening or closing of the blind the outer member of each arm moves and simultaneously the inner member moves relatively to the outer member. The outer member A is adjustably coupled to a runner d<3> which is guided on a track D and is moved therealong by an endless chain d<2> running over sprockets d<1> at the ends of the track. The outer member is supported by an anti-friction grooved guiding roller e<1> mounted on a fixed plate E and is provided with sprockets a<1>, b3. One chain a2 is coupled at a3 to the plate E and passes over the sprocket a<1>, then along the inside of the outer part A, the other end of the chain being coupled at a<4> to the inner end of the part B of the arm. A second chain b<1> is coupled at b<2> to the inner end of the part B and passes over the sprocket b<3>, along the outside of the part A, the other end of the chain being anchored to the plate E.
Patent GB-1039902-A (GB)
Title: Lubricant for aluminium surfaces
Filed: 1964-03-11
Abstract: Lubricants for aluminium surfaces comprise a mineral lubricating oil containing (1) 1-25 wt. per cent of a copolymer of a vinyl pyridine and a methacrylate ester, and (2) 0.5-5 wt. per cent of a long-chain aliphatic polar oxygen-containing compound selected from C12-22 aliphatic alcohols, ketones, and epoxides, the polar oxygen-containing group being attached to the alpha and/or beta carbon atoms of the aliphatic chain. Suitable additives (1) are copolymers of (a) 2 - methyl - 5 - vinyl pyridine, 2 - ethyl - 5 - vinyl pyridine, 4 - methyl - 2 - vinyl pyridine, 2-butyl-5-vinyl pyridine or 3-vinyl pyridine, with (b) C12-18 alkyl methacrylates such as lauryl and/or stearyl methacrylates.  Suitable additives (2) are dodecanol, tetradecanol, heptadecanol, octadecanol, eicosanol, dodecyl methyl ketone, hexadecyl methyl ketone, heptadecyl methyl ketone, octadecyl methyl ketone, dodecene - 1,2 - epoxide, tetradecene-1,2 - epoxide, hexadecene - 1,2 - epoxide, and octadecene-1,2-epoxide.
Patent GB-1184507-A (GB)
Title: Process for Fixing Reactive Dyestuffs on Fabrics Made of Cellulose or of Mixtures of Cellulosic Fibres and Synthetic Fibrous Materials
IPC: D06P3/66
Filed: 1968-03-04
Abstract: 1,184,507. Printing cellulosic materials with reactive dyes. FARBWERKE HOEGHST A.G. 4 March, 1968 [7 March, 1967], No. 10360/68. Heading D1B. A process for producing reactive dye prints on fabric made of natural or regenerated cellulose fibres or a mixture of natural or regenerated cellulose fabric and synthetic fibres comprises printing with a reactive dye followed by drying and padding up nip-padding with an aqueous solution of inorganic alkali at pH 9-14 and then exposing the fabric to radiation for at least one second, by short or long-wave infra red radiation, preferably the padding solution is of pH 11-14 and irradiation takes 2-20 seconds.
Patent GB-566524-A (GB)
Title: Improvements in or relating to testing arrangements for variable gain amplifiers
IPC: H03F1/54
Filed: 1943-06-26
Abstract: 566,524. Testing thermionic valve circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. June 26, 1943, No. 10363. Convention date, June 26, 1942. [Class 40 (v)] A test system for a push-pull amplifier comprises a pair of vacuum tubes connected in push-pull relationship, means in the common grid circuit for varying the grid bias of the tubes, means for generating and rectifying a relatively high frequency current and impressing it together with a low frequency current on the means in the common grid circuit, and means for measuring the amount of low frequency current in the output of the vacuum tubes. The invention is described as applied to a balanced compressor circuit comprising an input transformer 8, variable gain amplifiers 6, fixed gain amplifiers 10 and output transformer 14. Part of the output energy is fed by lines 16, switch 17 and transformer 20 to a rectifier 23 which provides a voltage which is fed by line 25 to resistance 26, where it is applied as gain control bias for amplifiers 6. For the purposes of testing, the output is connected through a low pass filter 40 and high gain amplifier 41 to a measuring instrument 42. A variable amplitude 9000 cycle voltage is applied at 30 to the input and a 60 cycle fixed amplitude voltage at 36 is superposed on the grid bias resistor 26. The meter then records the amount of 60-cycle current appearing in the output die to unbalance in the push-pull amplifier circuit. A potentiometer 45 is used to effect a balance, but when this fails, one or more of the valves must be changed for valves having more nearly identical characteristics. A modified test consists in feeding the variable amplitude 9000 cycle voltage direct to the transformer 20 to provide the rectified compressor voltage without first passing through the amplifiers. The rest of the test remains the same.
Patent GB-723035-A (GB)
Title: Improvements relating to curtain heading tape
IPC: A47H13/16
Filed: 1952-04-25
Abstract: 723,035. Curtain heading tapes. JOHNSON, F. D. April 27, 1953 [April 25, 1952], No. 10406/52. Class 52 (5). A heading tape 1 woven with a succession of spaced straps 2 lying in front of openings 3 in the tape, has draw cords 4 running into and out of the tape and passing through the straps running' diametrically across the hook tubes formed by the straps when the tape is gathered on the cords.
Patent GB-1013370-A (GB)
Title: Process for the production of highly halogenated copper phthalocyanines
IPC: C09B47/067
Filed: 1964-03-12
Abstract: Copper phthalocyanines containing 14 or more chlorine or bromine atoms per molecule are made by heating to 160-260 DEG  C., 4 mols. of tetra-chloro- or -bromo-phthalodinitrile with a copper donor containing at least one gram-atom of copper in the presence of at least 0.25 mol. of ammonia introduced as ammonia or an ammonia donor and optionally in the presence of an inert aromatic solvent boiling between 100 DEG  and 350 DEG  C.  Copper donors are copper oxides, copper salts of organic and inorganic acids and copper tetrammine-complexes.  Ammonia donors are urea, ammonium chloride, bromide, sulphate, nitrate, carbamate, and carbonate, ammonium hydrogen carbonate, guanidine and its water-soluble salts with acids, cyanamide, dicyandiamide and biuret.
Patent GB-734274-A (GB)
Title: An improved fastener
IPC: F16B5/12
Filed: 1952-04-25
Abstract: 734,274. Clips. FERNBERG, E. B., and FERNTOL PATENTS, Ltd. April 27, 1953 [April 25, 1952]. No. 10526/52. Class 44. A resilient metal fastener comprises a plate-like body having means extending from one side for engaging one of the members to be secured, and extending from the other side, a pair of lugs arranged in spaced staggered formation on the body for engaging the other member, each lug being sheared and bent out of the general plane of the body so as to have a " land " which is obliquely inclined, with respect to the body both longitudinally and transversely with respect to the length of the lug. In the arrangement shown as applied to a fastener for attaching C-section beading to a panel, the fastener comprises a plate 21 bowed about a longitudinal axis and having upturned side edges or arms 24 for gripping the beading. The plate is attached to the panel by means of a pair of spaced lugs 27, 28 sheared and bent from the plate, the lugs being engaged in corresponding holes in the panel by passing the lugs downwardly through the holes and then twisting the plate so that the lugs engage the underside of the edges of the hole, the flat part or land of each lug being inclined both longitudinally and transversely with respect to the lug. In a modification Figs. 11 to 13, (not shown) the lugs are sheared and bent from opposite edges of the plate. In another arrangement Fig. 14 (not shown) having lugs similar to those of Fig. 2, the plate is extended and bent over to form a resilient arm for holding electric cables the part of the plate carrying the lugs being bowed about a transverse axis. In modifications Figs. 15 and 16 (not shown) the lugs engage respectively a pair of round and elongated holes in the panel.
Patent GB-316287-A (GB)
Title: Improvements in and relating to the manufacture of acetic acid and lactic acid by fermentation
IPC: C12P7/56
Filed: 1929-04-05
Abstract: 316,287. Soc. Anon. des Distilleries des Deux-Sevres. July 27, 1928, [Convention date]. Drawings to Specification. Bacteria, cultivating. - A species of bacteria named lacto-bacillus acidophilus B which ferments worts rich in sugar and occurs naturally in milk, is selected by starting with a culture medium containing 10 per cent sugar and testing samples taken therefrom on natural sugar worts at a temperature of 38‹ C. and with a lactic acid content of 25 to 30 grams per litre until the species of bacteria is found evolving rapidly in such a medium.
Patent GB-577181-A (GB)
Title: Improvements in crystal contacts of which one element is mainly silicon
IPC: H01L21/00
Filed: 1941-08-20
Abstract: 577,181. Silicon crystal contacts. GENERAL ELECTRIC CO., Ltd., JONES, D. E., RANSLEY, C. E., RYDE, J. W., and WILLIAMS, S. V. Aug. 20, 1941, Nos. 10624 and 13432. [Class 90] A crystal contact consists of silicon freed from the usual impurities, in which is incorporated a small amount of metal forming a solid solution with silicon and having a stable oxide. Aluminium and beryllium are suitable. The mixture is preferably melted in a crucible of pure beryllia. The surface is polished, oxidised under controlled conditions, and treated with hydrofluoric acid to remove most of the oxide. Part of the surface is then coated with metal to facilitate soldering the crystal into a cup. A plurality of metal points connected in parallel may be used in contact with the crystal. Specification 589,592 is referred to.