baber/WOPTO huggingface dataset:
Patent GB-349115-A (GB)
Title: Improvements in or relating to the manufacture of vat dyestuffs
IPC: C09B5/40
Filed: 1930-02-13
Abstract: Benzanthrone derivatives.-Products obtained by the action of chlorine or bromine on (2-benzanthronyl)-1-aminoanthraquinone, which may already contain halogen in a position other than the 2-position of the anthraquinone residue, are treated with an acid condensing agent to yield dyestuffs which apparently have the same ring structure as the products of Specifications 305,679, [Class 2 (iii), Dyes &c.], and 341,400.  Thus greenish dyeings are obtained which are distinct from those of the products of Specification 273,656, [Class 2 (iii), Dyes &c.].  The acid condensing agents may introduce further substituents into the molecule; thus fuming sulphuric acid may introduce hydroxy and sulpho groups.  In examples: (1), tribromo - (2 - benzanthronyl) - 1 - aminoanthraquinone (prepared by treating the unhalogenated material with an excess of bromine) is treated with chlorsulphonic acid; it dyes green shades; probably the same dyestuff is obtained by treating (2-benzanthronyl)-1-aminoanthraquinone with a solution of bromine in chlorsulphonic acid; (2) dibromo-(2 - benzanthronyl) - 1 - aminoanthraquinone (prepared by brominating the unhalogenated substance in nitrobenzene) is condensed with chlorsulphonic acid; it dyes blueish-green shades; (3) the dichloro derivative obtained by chlorination in dichloracetic acid is condensed with chlorsulphonic acid; it dyes blueish-green: (4) the dibromo-monochloro-(2-benzanthronyl)-1-aminoanthraquinone (prepared by brominating the condensation product of 1 mol. of 2.6-dichlorobenzanthrone and 1 mol. of 1-aminoanthraquinone with an excess of bromine) is treated with chlorsulphonic acid; it dyes green, but if fuming sulphuric acid is employed instead, a blue-grey dye is obtained.  The Specification as open to inspection under Sect. 91 (3) (a) covers the treatment of the halogenation products of (2-benzanthronyl)-1-aminoanthraquinone or its substitution products with acid condensing agents or with dehydrogenating agents having a mild action, and contains an additional example in which mono-(2-benzanthronyl)-1.4-diaminoanthraquinone is treated with benzoyl chloride and bromine, and the resulting dibromo-monobenzoylaminoderivative boiled in nitrobenzene to give a yellow-green dye.  The additional subject-matter does not appear in the Specification as accepted.  Reference has been directed by the Comptroller to Specification 273,656.
Patent GB-1072709-A (GB)
Title: Improvements relating to television receivers
IPC: H04N9/27
Filed: 1965-02-04
Abstract: 1,072,709. Colour television tubes. INTERNATIONAL POLAROID CORPORATION. Feb. 4, 1965 [Feb. 14, 1964], No. 4932/65. Heading H1D. [Also in Division H4] In a colour television receiver of the kind in which the colour reproduced by the tube 17 (Fig. 1) is dependent on the energy of the electron beam impinging the screen 23 such energy being determined by the potential relative to the gun 24, of the screen which (in the case of a two-colour system) is switched between two values by means of a switch 27 synchronously with the sequential application of colour signals to the gun. 24 by a switch 26, misregistration between the different colour images due to the dependence of the scanning deflection angle on the beam energy is reduced by means of a grid 28 positioned close to the screen and supplied via a switch 30 operating synchronously with switches 26 and 27 with a potential which, relative to the gun, is high when that of the screen is low and vice versa, the grid voltage always being lower than the screen voltage. This operation is described with reference to Fig. 5 (not shown), and the steps leading to the solution are described with reference to Figs. 2 to 4 (not shown). The system may operate in dot, line, field or frame sequential fashion.
Patent GB-696745-A (GB)
Title: Improved wired broadcasting systems and apparatus
Inventor: GABRIEL RALPH PARTON
IPC: H04N7/10
Filed: 1952-02-26
Abstract: 696,745. Distributing music &c. COMMUNICATIONS PATENTS, Ltd. Feb. 26, 1952, No. 4968/52. Drawings to Specification. Class 40 (iv). In a wired broadcasting system a control signal different from the signals pertaining to programme matter is distributed, a first means is provided in each subscriber's equipment which in response to the control signal restricts the use of at least one expendable component thereof, e.g. a C.R.T., and further means at a subscriber's equipment permits the action of the first means to be prevented to enable the equipment to be serviced. As described the control signal is a D.C. potential across the line wires which operates a relay at each subscriber's equipment to disconnect the desired components from the mains. The relay at any equipment may be disconnected from the line by a maintenance engineer operating a manual switch thereat prior to testing the equipment. The system may be a single or multi-programme one for sound and/or television.
Patent GB-1110148-A (GB)
Title: Rotatable knobs of the kind wherein rotation of the knob serves to display by means of light spots various numerals, letters or other patterns, or a pattern in differentcolours, on the front face of the knob
IPC: G09F9/46
Filed: 1967-02-01
Abstract: 1,110,148. Edge illuminated rotatable indicator. TAKAGI INDUSTRIAL CO. Ltd. 1 Feb., 1967 [8 Feb., 1966; 30 March, 1966], No. 4984/67. Heading G5C. A manually operable indicator or display device comprises an open fronted rotatable knob 1 in association with a single stationary light source 7, there being fixed within the knob casing at least one optically transparent plastics plate 2 bearing display dimples and having at least one integral tab portion 3 such that upon rotation of the knob the tab portions are brought to face end onwards to the light source for edge illumination of the dimples. When a plurality of plates are contained within the knob casing each plate bears a numeral depicted by dimples and each plate has one tab portion so that the numeral of a plate is illuminated when the tab portion of that plate is rotated to face the light source. A central boss within the casing and a retaining ring keep the plates in position. The embodiment of Fig. 5, which allows for illumination of a pattern with varying colours as the knob is turned, has one plate 2 with several rearwardly extending tabs 3 associated with different colour filters. A hood 8 and reflective coating provided on the plates ensures isolation of light passing through one plate from other plates.
Patent GB-525088-A (GB)
Title: Improvements in and relating to rotary pumps, compressors and exhausters having radially sliding vanes
IPC: F04C15/06
Filed: 1939-02-15
Abstract: 525,088. Rotary pumps. RUBURY, J. M., HAMMOND, W. R., and HAMMOND ENGINEERING CO., Ltd. Feb. 15, 1939, No. 4986. [Class 110 (ii)] Rotary pumps are arranged for running in either direction by providing that the effective arcuate length of the port on the suction, side is longer than that of the port on the delivery side. Auxiliary ports n, p, in advance of the main ports l<1>, m<1>, are controlled by spring- urged valves r and, when the pump is running, that one is opened which is on the suction side.
Patent GB-184207-A (GB)
Title: Improvements in or relating to coils for electrical transformers
IPC: H01F27/30
Filed: 1921-02-12
Abstract: 184,207. British Electric Transformer Co., Ltd., and Roothaan, J. Feb. 12, 1921. Transformers.-A transformer comprises adjacent sets a, b of convolutions of bare conductor spaced apart by radial separators c, the convolu. tions in each set being separated by interposed distances-pieces d and held together by radial binders e. The separators, distance-pieces and binders are formed of homogeneous insulating- material, and are arranged at intervals around the convolutions in such a manner that the convolutions are mainly insulated by air, previous to the immersion of the winding in oil. The coil is wound with the aid of a former comprising rings g, g<1>, Fig. 2. which are provided with recesses on their peripheries to hold the radial separators in position. The rings carry lateral guide-bars i and are clamped together by set-screws h. The distance-pieces d, which may be provided with notches engaging the separators c and binders c, are inserted in position as the winding proceeds. In a modification, the distance-pieces are provided on one side with 4 dovetail notches through which pass the radial separators, which are of corresponding shape in cross-section. When strip conductors are employed the ends a<1>, b<1>, of the strips may be joined together by means of a short strip of copper f. Fig. 7<a>, which is formed with an expansion bend f<1> and riveted to the ends of the strips. The edges of the conductors, separators, distance-pieces, and binders may be curved to conform to the lines of force of the electrostatic field set an when the coil is in use. When round conductors are used, the distance-pieces d may have rounded inner and outer edges, with intermediate concave recesses to receive the conductors, as shown in Fig. 16. The separators c are displaced angularly with reference to the distance-pieces, and are formed on opposite sides with recesses c<2> to receive the convolutions of the adjacent coils a, b. The binders (not shown) may be similarly recessed to receive the convolutions.
Patent GB-1126222-A (GB)
Title: Improvements in or relating to drafting machines
Inventor: DARGUE ERIC LEWIN
IPC: B43L13/04
Filed: 1965-02-05
Abstract: 1,126,222. Draughting machines. DARGUE BROS. Ltd. Feb.7, 1966 [Feb. 5, 1965], No. 5009/65. Heading G1X. A straight edge 11 which is constrained to move parallel to itself over a drawing board 10 by means of a wire 12 and pulley arrangement or by rack and pinion gearing, is secured at each end to a bracket 13 sliding along an edge of the board, the bracket being adjustable relative to the wire 12 or other arrangement by the provision of a slot 18 so that the angle of the straight edge 11 relative to the edges of the board may be varied e.g. by Œ 5 degrees from the normal 90 degrees. The wire 12 is secured to the head of a screw 19 and a butterfly nut 21 is used to adjust the position of the screw in the slot 18. The straight edge 11 pivots on a screw 16 during this adjustment and a nut on this screw is used to lock the straight edge to the bracket 13.
Patent GB-572092-A (GB)
Title: Improved means for the water lubrication of shaft bearings
IPC: F16C33/22
Filed: 1944-03-17
Abstract: 572,092. Lubricating ; bearings. AKER, E. S. March 17, 1944, No. 5017. Convention date, July 28, 1943. [Classes 12 (i) and 12 (iii)] A non-metallic bearing sleeve 12 rotating with the shaft 15 has radial passages 18 through which lubricating water is forced centrifugally from axial channels 17 in a corrugated metal sleeve 11 between the sleeve 12 and the shaft. The sleeve 12 consists of rubber moulded or forced onto the sleeve 11 which extends beyond the rubber to receive metal end collars secured by set-screws, the collars being of smaller diameter than the sleeve 12. One or more external grooves 19 may be formed in the sleeve 12 to assist in spreading the lubricating water and to provide clearance spaces for sand and grit. The bearing may be applied to the submerged shafts of boats or machinery.
Patent GB-490936-A (GB)
Title: Improvements in or relating to electrical signalling systems
IPC: H02J13/00
Filed: 1937-02-19
Abstract: 490,936. Electric control systems. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd., ROSEBY, P. N., and MACKENZIE, J. F. Feb. 19, 1937, No. 5068. [Class 40 (i)] [Also in Group XXXV] In a system for controlling remote apparatus over power mains, high-frequency control currents are injected into the low-tension network between the neutral and one phase conductor and are transmitted over the high-tension mains for the operation of apparatus connected to other low-tension networks. As shown, spark-gap apparatus G supplied from the L.T. network at substation 1, is operated by switch CN to transmit H.F. current via the power transformer, one winding of which is tuned by condenser VC1, and H.T. network to operate a relay J at substation 2 through the intermediary of a valve V1 and tuned circuit VC2, VC3, H, I connected to the L.T. network. Valve V1 is operated by positive grid swing produced by condenser FC and rectifier MR. The coils H, I are loosely coupled to prevent interference by parasitic H.F. currents, the coil H being wound with two windings to produce a diametral field and being rotatable in the plane of the coil I which is of solenoid type. This coil arrangement facilitates adjust. ment of the coupling without affecting the tuning. Upon operation of the relay J in response to a transmitted signal a further spark generator N is operated to effect control of responding devices connected between the neutral wire and earth at substation 2. To prevent interference with the operation of relay J, generator N produces a frequency which is higher than that of generator G ; additionally, relay J may be arranged to cut off after a predetermined period. A gas discharge tube biassed to almost its flash voltage may be used instead of the valve VI ; alternatively a sensitive relay may be operated directly by the signal voltage.
Patent GB-1465542-A (GB)
Title: Process for 11a-chlorination of oxytetracycline
IPC: C07C67/00
Filed: 1974-02-04
Abstract: 1465542 11a-Chloro-5-oxytetracycline-6,12- hemiketal PFIZER Inc 4 Feb 1974 [2 Aug 1973] 05124/74 Heading C2C 11a - Chloro - 5 - oxytetracycline - 6,12 - hemiketal is obtained in the form of a strong mineral acid addition salt by chlorinating 5-oxytetracycline or an acid addition salt thereof at - 10 to - 40 C. and pH 6À5-7À7 in a water-miscible reaction-inert solvent or its mixture with water and then adding a strong mineral acid to lower the pH of the reaction mixture thus obtained to <1À0. Reference has been directed by the Comptroller to Specification 998,294.
Patent GB-1063631-A (GB)
Title: Improvements in or relating to nuclear reactor fuel elements
Inventor: EDGE THOMAS
IPC: G21C3/20
Filed: 1964-02-06
Abstract: 1,063,631. Fuel elements. UNITED KING- DOM ATOMIC ENERGY AUTHORITY. Jan. 21, 1965 [Feb. 6, 1964], No. 5172/64. Heading G6C. A fuel element, comprising a uranium or uranium base alloy in a sheath of a magnesium base alloy also containing zirconium, has a substance diffused through at least part of the sheath wall thickness which prevents diffusion of plutonium through the sheath by forming an intermetallic compound with the plutonium. The substance is preferably aluminium, although it may alternatively be aluminium-silicon, copper, nickel, or copper and nickel based alloys. The substance is preferably applied initially to the fuel body in the form of a wrapping of foil, although it can be applied to the sheath interior, and may in both cases be applied alternatively by vacuum deposition, electro deposition, spraying or dipping. The fuel and sheath are assembled with a layer of the substance between them, and heat and pressure applied. In the case of aluminium, it forms an intermetallic compound with the sheath zirconium, and consequently sufficient aluminium must be used to ensure that an uncompounded layer has diffused into the can which will combine with the plutonium as it is formed during fission of the fuel element. The diffusion is not necessarily completed during manufacture ; it may continue to take place from the remaining layer between the fuel and sheath during use in the reactor.
Patent GB-587445-A (GB)
Title: Improvements in and relating to inter-polymerization products
IPC: C08F214/06
Filed: 1943-04-02
Abstract: A mixture of more than 90 per cent of vinyl chloride and 0.1 to 10 per cent of an itaconic ester having the formula <FORM:0587445/IV/1> where X is R or CH2.CH2.O.R1 and R is an alkyl radical having from 2 to 10 carbon atoms and R1 is an alkyl radical having not more than 8 carbon atoms is polymerized. Esters specified are diethyl-, di-n-propyl-, di-isopropyl-, di-n-butyl-, di-isobutyl-, di-isoamyl-, di-octyl-, di-decyl-, di-(ethoxy-ethyl)-and di-(butoxy-ethyl)-itaconates. Polymerization may be effected by heat and/or light and may be accelerated by catalysts, e.g. oxygen, ozone, hydrogen peroxide or benzoyl peroxide.  There may be present solvents for the monomer mixture or for the interpolymer.  The product may be spongy or granular.  There may be added before, during or after polymerization vinyl chlorobenzoate or chlorobenzyl acrylate, wood flour, a -cellulose flock, sand, asbestos, mica, paper, cloth, regenerated cellulose, cellulose esters or ethers, natural and synthetic fibres, pigments, dyes, plasticizers, e.g. dibutyl phthalate, synthetic and natural resins, gums, oils, waxes, polyhalogenated aryl compounds, esters of aliphatic or aromatic monobasic or polybasic acids, stabilizers, e.g. these described in Specification 587,444.  The products may be used as adhesives, coating compositions and impregnants for porous bodies. Specifications 13817/40, 13818/40, 13819/40 and 13822/40 (all as open to inspection under Sect. 91) also are referred to.
Patent GB-667288-A (GB)
Title: Improvements in or relating to method of preparing copolymers of styrene and the emulsion copolymer resulting from said method
IPC: C08F212/08
Filed: 1949-02-28
Abstract: Styrene-a -methyl styrene copolymers are prepared by reacting from 30 to 45 per cent by weight of a -methyl styrene and 55 to 70 per cent by weight of styrene in an aqueous emulsion in which the ratio of monomer weight to weight of water is maintained between 0.1 and 0.5, and in the presence of from 0.1 to 5 per cent by weight of the total monomers of an emulsion stabilizer, preferably a sodium salt of a sulphonated alkyl or aromatic hydrocarbon, a rosin soap or a sodium or potassium fatty acid soap, maintaining the temperature between 80 DEG  and 110 DEG  C. throughout the reaction period of 4 to 12 hours, adding from 0.02 to 0.10 gram molecular weights of a water-soluble peroxy compound, preferably potassium persulphate, per hour for each 100 pounds of total monomers and recovering the copolymer, preferably by agitation, freezing, or precipitation by the addition of alcohol or an aqueous solution of alum or other salt.  The reaction may take place at the reflux temperature of the mixture.
Patent GB-163145-A (GB)
Title: Improved collapsible cot
IPC: A47D13/02
Filed: 1920-02-23
Abstract: 163,145. Hunt, E. Feb. 23, 1920. Bags.-A cot convertible into a hand-bag comprises the folding frame A with pivoted legs D and a canvas member B. When in use as a cot, the parts are held in extended positions by catches G, and when folded for use as a handbag, the device is carried by the handle H.
Patent GB-1451842-A (GB)
Title: Electric transformers
IPC: H01F38/42
Filed: 1974-02-06
Abstract: 1451842 Transformer or inductor SIEMENS AG 6 Feb 1974 [7 Feb 1973] 05412/74 Heading H1T A transformer comprises a ferromagnetic multilimbed core with at least one limb bearing a winding, and only such winding-bearing limbs having an air-gap, said winding having at least one inner layer of litz wire. One embodiment comprises two end-opposed E-shaped ferrite core members the centre arms of which, being shorter than the outer arms, result in the centre limb having an air-gap 2. A winding 3 surrounds this gap, said winding having its inner layers 4 of litz wire, the outer layers being of solid wire. A further embodiment comprises two U-shaped ferrite core members Fig. 2 (not shown) spaced apart by a ferrite plate (5). The width of the gap 2 may be between 1À5 and 3À5 mm. The or each winding may embrace more than one air-gap.
Patent GB-747344-A (GB)
Title: Improvements in or relating to oil sealed rotary vacuum pumps
Inventor: HOLLAND LESLIE ARTHUR
IPC: F04C27/02
Filed: 1952-02-29
Abstract: The oil of an oil-sealed rotary vacuum pump is freed from contaminants by discharging the exhaust oil from the pump into a reservoir, aerating the oil therein with dry air to vaporize and remove contaminants, and recirculating the purified oil to the pump. In Fig. 1, sealing oil from a water-cooled rotary pump 4 flows through discharge pipe 17 into the bottom of reservoir <PICT:0747344/III/1> 5, which is surrounded by heating element 6. Oil discharged from pipe 17 is deflected by electrically heated baffle 23 on to tray 19, overflows from the tray, and flows through the annular passage 21 formed between the tray and the wall of the reservoir on to tray 20, and thence through a central aperture 22 to the bottom of the reservoir.  Volatile vapours from the oil are removed by pipe 8.  Dried compressed air, which may be preheated, from container 5 is bubbled through the oil via pipe 26 and perforated pipes 27. Purified oil is returned to the pump through pipe 18 and magnetic valve 11.
Patent GB-181772-A (GB)
Title: An improved heat retaining cover for cooking purposes
IPC: A47J36/36
Filed: 1921-02-17
Abstract: 181,772. Cruickshank, A. B. Feb. 17, 1921. Covers; suppers for articles to be treated.-A heat-retaining cover for cooking purposes, for use especially with a heat distributing plate such as is described in Specification 149,845, comprises an outer casing 1, Fig. 4, perforated at 6, fitted with a heat-deflector lining 2 in its upper part, and provided with a stand 7 for a dish or other vessel, which is formed of radial ribs secured to the cover and slotted at 10 to take the handle 8 when it is not in use. 'The lining is attached to the cover permanently by rivets 3, or removably as in Fig. 8, and is spaced away from it by studs 5. and has a vent 13. A detachable stand Z supports the food to be cooked within the cover.
Patent GB-511687-A (GB)
Title: Improvements in or relating to head lamps for vehicles
IPC: B60Q1/068
Filed: 1938-02-22
Abstract: 511,687. Vehicle lamp mountings. BOSCH GES., R., (formerly BOSCH AKT.-GES., R.). Feb. 22, 1938, No. 5486. Convention date, Feb. 22, 1937. [Classes 75 (ii) and 75 (iii)] In a headlamp, adapted to be installed flush in an opening in the vehicle body 1 and having a detachable cover glass 2 continuous with the curved form of the body, the glass 2 has an annular extension 3 with a flange 4 secured by springs 6 in a holding ring 5, having an extension 7 provided with three spaced apertured brackets 8 mounted on stay bolts 9 on the interior of the body 1, a spacing ring 11 and a packing ring 12 being provided. The reflector 13 is mounted in a tubular casing 14 adjustably held in the extension 7 by screw bolts 16, inserted through lugs 15 on the casing 14 into the brackets 8, and springs 17 thereon. The ring 11 may extend into the opening in the body so as to be visible from the front or it may be dispensed wdth and the brackets 8 be held against collars on the stay bolts 9.
Patent GB-1161106-A (GB)
Title: An Electroinductive Sensing Device.
IPC: G01N27/90
Filed: 1967-02-06
Abstract: 1,161,106. Inductive flaw detectors. ESSEM METOTEST AB. Feb.6, 1967 [Feb.24, 1966], No.5528/67. Heading G1N. In an inductive flaw tester for moving strip material, the coils are arranged across the strip and connected as the arms of an A. C. energized bridge. The output may be arranged to operate a marker when a flaw is detected.