baber/WOPTO huggingface dataset:
Patent GB-1355392-A (GB)
Title: Surface wave frequency discriminator
IPC: H03D3/16
Filed: 1971-07-16
Abstract: 1355392 Frequency discriminators; acoustic surface wave transducers TEXAS INSTRUMENTS Inc 16 July 1971 [12 Aug 1970] 33486/71 Headings H3A and H3U A surface wave FM discriminator comprises a piezoelectric substrate 19, an input interdigitated transducer 20, at least one output interdigitated transducer 22, 24 placed in the path of the surface wave generated by 20, rectifiers D1, D2, filters R, C connecting the output transducer to a load. The output transducers 22, 24 are designed to have centre frequencies above and below that of the input transducer 20 so that the resultant demodulated signal has a zero voltage level at the centre frequency of 20. Figs. 4-7 (not shown) involve tuning arrangements, e.g. inductors, for suitably matching the output transducers to the discriminator load or the input transducer to an input source to minimize insertion losses. The discriminator may involve two separate channels (Fig. 11, not shown) for portions above and below the centre frequency with each channel including one input and one output transducers and formed on the same or different faces of the same substrate. The discriminator may include as a unidirectional input transducer two identical transducers (Fig. 12, not shown) connected by a quarter wave transmission line which radiate in one of two directions for frequencies lying above and below the centre frequency respectively. Fig. 13a (not shown) relates to a slope frequency discriminator involving just one input and one output transducers which produces a non-zero level at the centre frequency. The linearity of the frequency response may be controlled by modifying the impulse responses of the separate transducers, e.g. by suitable weighting. Surface wave transducers 20, 22, 24 formed on a piezoelectric substrate 19 are designed to have adjacent electrodes spaced apart by onehalf of a wavelength of the centre frequency desired for that transducer. The frequency response of the surface wave generated by a transducer has a fractional bandwidth determined by the total number of pairs of electrodes. The impulse response and hence the frequence response of a transducer may be modified by amplitude weighting, i.e. varying the interaction length of adjacent electrodes, the periodicity and the width of selected electrodes.
Patent GB-994730-A (GB)
Title: Treatment of leather
IPC: C14C9/00
Filed: 1963-08-23
Abstract: An aqueous dispersion is made which contains a graft polymer of butyl acrylate and methacrylic acid on a substrate copolymer of vinylidene chloride, butyl acrylate and ethyl acrylate.ALSO:In improving the break and resistance to abrasion of dry, fully tanned, fat-liquored leather, the leather is impregnated, on one side only, with an aqueous dispersion, having a pH value between 2 and 6.5, containing between 0.5% and 8.0% by weight, of a surface-active agent and between 5% and 20% of a dispersed, water-insoluble linear addition polymer, e.g. a homopolymer or a copolymer, having a Ti value not exceeding 30  DEG C.  The particles of the dispersed polymer have a surface-average radius between 250 and 1300 Angstrom units and impregnation is effected so that at least 90% by weight of the deposited polymer is distributed through at least 15%, but not more than 40%, of the thickness of the leather.  The dispersion may be applied, as by repeated swabbing, to the grain side of the leather to impregnate it through the corium minor to its junction with the corium major. The dispersion may be applied, as by spraying, to the flesh side of a shearling to impregnate it through the corium major to its junction with the corium minor. The leather may be split leather. The polymer may be a polymer of monoethylenically unsaturated monomer molecules, such as those of esters obtained by reacting acrylic or methacrylic acid with one or more than one saturated aliphatic or cycloaliphatic monohydric alcohol having 1-18 carbon atoms per molecule. The polymer may be a copolymer containing 0.5-4.0% by weight of acrylic, methacrylic or itaconic acid and 99.5-96.0% of (a) ethyl acrylate, (b) methyl acrylate and 2-ethylhexyl acrylate, (c) ethyl acrylate and n-butyl methacrylate, (d) n-butyl acrylate, (e) ethyl acrylate and vinylidene chloride, or (f) ethyl acrylate and methyl methacrylate.  Suitable anionic, non-ionic and cationic surface-active agents are specified.  In order to accelerate impregnation, the aqueous dispersion may contain 0.5-35% by weight of ethyl, methyl, isopropyl or tertiary-butyl alcohol, acetone or methyl ethyl ketone, dioxane or diethyl ether, ethyl or methyl acetate, diethylene glycol or its monoethyl or monomethyl ether.  After being impregnated, the leather may be hung and dried for 3 hours in a slowly moving current of dry air at 55 DEG C.  The dried, impregnated leather may be plated with a stndblasted plate in a press at a temperature of 150  DEG F. and a pressure of 2,500 p.s.i.  The resulting leather may be finished with one or more than one coating of nitrocellulose lacquer or a vinyl or acrylic polymer.
Patent GB-486320-A (GB)
Title: Improvements in low pressure metallic-vapour current converter discharge tubes
IPC: H01J17/58
Filed: 1936-12-07
Abstract: 486,320. Metal - vapour converters. BARUCH, S. N. Dec. 7, 1936. No. 33511. [Class 39 (i)] A vapour converter comprises thermionic and liquid cathodes which are separated by means formed with an opening which accommodates the thermionic cathode. An insulating partition 2, Fig. 1, carries a cone-shaped cathode 3 which is solid or of gauze and is coated with barium oxide. The mercury cathode 4 is provided with auxiliary anodes 6, 7. A discharge between the electrodes 4, 10 heats the cathode 3 to electron-emitting temperature ; condensate returns through a vertical or inclined capillary 5. The anode 10, with wire projections 11 preventing back arcing, is completely surrounded by the screen grid 12 which is provided with holes for the discharge and is mounted on a member 14 of lava or of the material known under the Registered Trade Mark " Isolantite." The control grid 19, which may have solid sides, encloses the tip of the cathode 3. The nickel wires 11 may be such that a potential difference exists between the ends thereof during operation ; some of the wires may be inclined towards the walls of the grid 12. The cathodes may be connected together through a resistance. In another form, a starting anode is connected to the terminal 8 by a heating wire which evaporates the mercury. A stem 34, Fig. 4, may support the anode 41, screen grid 40, and a glass or nickel member 35 which carries the cathode 38 through the disc 36. The cathode may be further heated by a filament 47. To reduce back-ignition, the primary and secondary of a transformer are connected in circuit with the anode and screen grid.
Patent GB-1477197-A (GB)
Title: Railway track-testing vehicles
IPC: G01G5/00
Filed: 1974-07-30
Abstract: 1477197 Measuring railway track level FRANZ PLASSER BAHNBAUMASCHINENINDUSTRIE GmbH 30 July 1974 [30 July 1973] 33665/74 Heading G1N [Also in Division B7]  In a railway track measuring vehicle for measuring track level the vehicle is supported on two, two-axle bogies 2, 3, the first bogie carrying sensors 4, 5 for sensing variations in distance between the body of the vehicle 1 and the two axles respectively and the second bogie either carrying sensor 6 for sensing the distance between one of its axles and the body or carrying sensors 6 and 8 which sense the distance variations between the respective axles of the bogie and the body and a circuit 9 for providing the mean of the readings of sensors 6 and 8. The sensors are connected in a measuring circuit which provides an output indicating the variation in the vertical movement of the axle associated with sensor 5 with reference to a datum defined by the axles associated with sensors 4 and 6 or with sensors 4, 6 and 8. The sensors are differential inductors D1-D3 and provide signals to a bridge circuit 11 which supplies an output signal to a printer 12.
Patent GB-733409-A (GB)
Title: Light-sensitive material for photomechanical reproduction and process of making images
IPC: G03F7/022
Filed: 1953-12-04
Abstract: Bis - (3 - formyl - 4 - nitro - phenyl) - phthalate (example 1) is prepared by shaking equivalent quantities of 2-nitro-5-hydroxy-benzaldehyde, phthalyl chloride and 5 per cent soda solution and recrystallizing the resultant precipitate from glacial acetic acid.  Bis - (3 - formyl - 4 - nitro - phenyl) - terephthalate (example 3) is prepared analogously from terephthalic acid chloride. Bis - (2 - methoxy - 3 - nitro - 4 - formyl-phenyl)-carbonate (example 4) is prepared by reaction of phosgene with 2 nitro-vanillin in presence of sodium carbonate and recrystallization of the product from benzene.  Bis - (2,4 - dinitro - 3 - formyl - 6 - methoxy-phenyl)-terephthalate (example 5) is prepared from dinitro-iso-vanillin and terephthalic acid chloride analogously to the method of example 1.  3 - Formyl - 4 - nitro - phenyl - 1-a -naphthoic acid ester (example 6) is prepared by shaking 2-nitro-5-hydroxybenzaldehyde with a -naphthoylchloride in the presence of pyridine, solution of the product with soda and recrystallization from mixed dioxane and alcohol.  3 - Formyl - 4 - nitro - phenyl - p - chloro benzoic acid ester (example 7) is prepared analogously by condensation in presence of soda and recrystallization from ligroin.  Naphthalene - 2.6 - bis - [31 - formyl - 41 - nitro-phenyl - (1) - sulphonic acid ester] (example 8) is prepared by dissolving 2-nitro-5-hydroxybenzaldehyde in caustic lye, suspending naphthalene - 2.6 - disulphonic acid therein, washing the resulting ester and recrystallizing it from glacial acetic acid. Naphthalene - b  - [3 - formyl - 4 - nitro - phenyl-(1)]-sulphonic acid ester (example 9) is prepared by alkaline condensation of 2-nitro-5-hydroxybenzaldehyde and b -naphthoyl chloride with recrystallization from benzene.  3.31 - Dinitro - 4 - formyl - 41 - methyl - diphenylsulphone (example 10) is made by condensing 4.41 - dimethyl - 3.31 - dinitro - diphenyl - sulphone and p-nitroso-dimethyl-aniline and saponifying the resulting anil with hydrochloric acid.  3.31 - Dinitro - 4 - formyl - benzophenone (example 15) is prepared by splitting the azomethine compound from 3.31-dinitro-4-methyl benzophenone and p-nitroso-dimethylaminobenzene in benzene solution with hydrochloric acid and recrystallizing the product from glacial acetic acid.  Bis - (3 - formyl - 4 - nitro - phenyl) - 1.4 - dinaphthoic acid ester (example 18) is prepared by condensing 2 - nitro - 5 - hydroxy - benzaldehyde with naphthalene-1.4-dicarboxylic acid-dichloride in dioxane in presence of pyridine and purifying the product by solution in dimethylformamide and then precipitation by adding water. Specification 633,746, [Group XVI], is referred to.
Patent GB-320267-A (GB)
Title: Improvements relating to shafts for golf clubs
IPC: A63B53/14
Filed: 1928-11-19
Abstract: 320,267. Barrett, H. G. Nov. 19, 1928. Handles.-The grip of a golfclub shaft comprises a sleeve of comparatively hard, inherently resilient material arranged for torsional distortion, its resilience returning it to normal position after distortion. A sleeve 13 of pyroxylin or other material is secured at its inner end to a collar 11 surrounding a tubular metallic shaft 10, the material of the sleeve being pressed into recesses 12 in the collar. The outer end of the sleeve is secured to a cap 16 that covers the end of the shaft and has a bearing member 19 freely mounted on the outer surface of the shaft. The sleeve is maintained out of contact with the surface of the shaft by collars 21 of felt or other comparatively soft material and a filling 22 also of soft material. The contour of the sleeve conforms to that of the shaft.
Patent GB-1044007-A (GB)
Title: Improvements in and relating to thermally insulated reaction vessels
Inventor: SPRINIVASA PANCHAGNULA
IPC: B01J3/04
Filed: 1962-09-04
Abstract: <PICT:1044007/C4-C5/1> A thermally insulated reaction vessel used for the vapour phase hydrogenation of a hydrocarbon distillate oil (of Specification 1,031,717) comprises an inner wall enclosing the reaction zone, a pressure resistant outer wall in contact with the atmosphere, a space between the inner and outer wall, said space being divided into compartments by one or more partitions extending in a direction transversely of the width of the space and preventing substantially the flow of gas between the compartments they separate, the inner wall and each partition being so constructed or arranged that restricted communication exists between the reaction zone and all the compartments, each compartment being charged with a solid thermally insulating material that is permeable to gas. The words "permeable to gas" denote thermally insulating material in which there are present, or are formed during use, voids or fissures that permit gas to flow through the material by convection.  Fig. 2 indicates a preferred embodiment wherein the restricted communication exists by connecting the compartments in parallel at the top, the compartments optionally having inlet pipes 14, 15 and 16 for a gas of low heat transfer, e.g. carbon dioxide which prevents loss of high heat transfer gas, e.g. hydrogen from the reaction zone and Figs. 3 and 4 (not shown) indicate how the compartments may be connected in series to provide restricted communication along the length of each compartment.  The reactor is preferably made of steel and the thermally insulating material may be brick or a free flowing particulate material, e.g. alumina.
Patent GB-1506351-A (GB)
Title: Writing instrument
IPC: B43K5/04
Filed: 1976-08-16
Abstract: 1506351 Felt tipped pens T FUNAHASHI 16 Aug 1976 [22 Sept 1975] 34046/76 Heading A4K [Also in Division B6] When ink-absorbing writing tip 35 exhausts the ink contained in the ink chambers 40 and 41 pressure on sliding cylinder 37, or on a push-button in the pen end, compresses a bellows portion of reservior 10 and opens valve 31 by movement of rod 33. Ink then flows into chamber 40. The connection between the chambers 40 and 41 is broken by a projection 32 from the valve while the valve is' open, so that ink cannot flow continuously from the reservoir 10 to the tip 35.
Patent GB-937692-A (GB)
Title: Improved flexible coupling means for stanchions
IPC: B60N3/02
Filed: 1961-09-22
Abstract: 937,692. Omnibuses. G. BEATON & SON Ltd., and R. W. CREBER. Aug. 14, 1962 [Sept. 22, 1961], No. 34079/61. Class 108(1). The upper end of a stanchion 12 is secured to the roof by means of a sythetic resin sleeve 10 which grips the stanchion 12 at its narrowest part 11, slots 13 being provided to increase the resilience of the sleeve. An outer metal casing 15 retains the sleeve in position.
Patent GB-452694-A (GB)
Title: Improvements in and relating to drills
IPC: E21B17/046
Filed: 1935-12-10
Abstract: 452,694. Percussive drills. NORLEY, H. C., 551, Reid Street, Peterborough. Dec. 10, 1935, No. 34151. Convention date, July 17. [Class 124] A. detachable cutter 4 is attached to the shank 1 by lugs 6, 7 entering an annular recess 11. The shank bears wedge lugs 8 which engage corresponding recesses in the cutter and transmit rotary motion. The end of the shank 2 is formed of two circular portions of differing diameters. Specifications 392,788 and 426,470 arc referred to.
Patent GB-500504-A (GB)
Title: Improvements in or relating to the manufacture of metallurgical products of rod like form
IPC: B22F3/18
Filed: 1937-12-11
Abstract: 500,504. Alloys. MAUTSCH, R. Dec. 11, 1937, No. 34373. Convention date, Dec. 24. 1936. [Class 82 (i)] [Also in Groups XXII and XI] A metallurgical product of rodlike form for use as a charge for melting metals or forming alloys in a melting furnace, consists of a bundle of metallic fibres united by compression, the fibres having substantially the same crosssection throughout their entire length and being distributed in a substantially uniform manner throughout the entire length of the rod. The fibres may be of different metals. Long fine fibres, which may be formed by flaring metal plates, are introduced into a hopper 2 from which they may be drawn and preliminarily compressed by rolls 4. They are then led through rolls 7, 8 which unite the fibres by compression preferably in the cold without any binding agent. Binding agents or chemical or physical means such as heat may be used to facilitate uniting. The rolls 7, 8 may be on axes inclined to each other so as to twist the whole of the fibres during compression. Powdered metals or other substances may be blown between the fibres through nozzle 10 or may be localized on the surface by application thereto just before entering the rolls 7, 8. One or more wires 23, or a ribbon or a rod of metallic fibres previously subjected to preliminary compression may be guided by a hopper 24 through the centre of the fibres. The products may be used as welding-rods. When used as a charge in a metting-furnace the rod may be fed from the compressing apparatus directly into the funnel. Specification 500,455, [Group XI], is referred to. The Specification as open to inspection under Sect. 91 states that the rod may form a charge for a gas heated melting furnace. This subject-matter does not appear in the Specification as accepted.
Patent GB-892170-A (GB)
Title: New a-nor-steroid compounds
IPC: C07J75/00
Filed: 1960-10-07
Abstract: The invention comprises A-nor-pregnane compounds of the general formula <FORM:0892170/IV (b)/1> wherein X represents a H, b H or b Br or there is a double bond in the 5(6) position, Y represents a group of the formula <FORM:0892170/IV (b)/2> R represents O or a OH,b COOH, R1 represents O or a H,b OH, and R11 represents H or an acyl radical, and a process for the preparation of 3a -hydroxy-3b -carboxy-A-nor-5a -pregnane of the above general formula by rearranging the corresponding 3-keto-4-hydroxy-D 4-pregnene with an inorganic base catalyst such as potassium hydroxide, a process for the preparation of a 3-keto-A-nor-5a -pregnane of the above general formula by oxidising with sodium bismuthate the corresponding 3a -hydroxy-3b - carboxy- A - nor-5a -pregnane, a process for the preparation of a 3-keto-5b -A-nor-pregnane of the above general formula by isomerising the corresponding 5a -pregnane with alkali, a process for preparing a 3-keto-5b -bromo-A-nor-pregnane of the above general formula by brominating the corresponding 3-keto-A-nor-5a -pregnane, a process for preparing a 3-keto-D 5-A-nor-pregnene of the above general formula by dehydrobrominating the corresponding 3-keto-5b -bromo-A-nor-pregnane, a process for the preparation of 3-keto-A-nor-pregnane (or 5-pregnene)-20-one-21-ester of the above general formula by hydrolysing the corresponding 17a ,20; 20,21-bis-methylenedioxy compound with aqueous formic acid and esterifying the resulting 21-hydroxy compound with a carboxylic acid chloride or anhydride in the presence of a tertiary amine, and a process for the preparation of a 3a -hydroxy-3b -carboxy-11-hydroxy-A-nor-5a -pregnane of the above general formula by reducing the corresponding 11-keto compound with sodium borohydride.  Detailed examples are given.  4- Hydroxy - cortisone - 17a ,20,20,21 - bis - methylene-dioxy compound is prepared either by treating the cortisone-17a ,20,20,21-bis-methylene-dioxy compound with osmium tetroxide and aqueous hydrogen peroxide and dehydrating the resulting 4,5-diol compound with alkali, or by treating the cortisone-17a ,20,20,21-bis-methylene-dioxy compound with hydrogen peroxide and alkali and subsequently rearranging the resulting 4,5-epoxy compound with sulphuric acid in acetic acid.ALSO:A therapeutic composition contains as the active ingredient at least one A-nor-pregnane compound of the general formula <FORM:0892170/VI/1> wherein X represents an H, b H or b Br or there is a double bond in the 5(6) position, Y represents a group of the formula <FORM:0892170/VI/2> R represents O or a OH, b COOH, R1 represents O or a H, b OH, and R11 represents H or an acyl and a pharmaceutically acceptable carrier.  The composition may be in the form of a tablet, powder or pill, or in the form of a solution or suspension for use parenterally.
Patent GB-769692-A (GB)
Title: Improvements in or relating to the manufacture of flat glass
Inventor: PILKINGTON LIONEL ALEXANDER BE
IPC: C03B13/04
Filed: 1953-12-10
Abstract: 769,692. Glass manufacture. PILKING- TON BROS., Ltd. Nov. 8, 1954 [Dec. 10, 1953], No. 34469/53. Class 56. In a process and apparatus for controlling the cooling of a continuous ribbon of flat glass and for giving a finish to its surface or surfaces, the ribbon 16 in its passage fromthe sizing rollers 13, 14 to the conveyer 17, to the annealing lehr is floated along a thermally-regulated bath of molten metal 2, particularly molten tin, under a non-oxidizing and thermally regulated atmosphere 7 confined above the bath. There may be "lanes" through.the bath formed by tunnel like structures and means may be provided for protecting the molten metal of the bath from the effects of the atmosphere above the bath. Burners for sweeping the upper surface of the newly formed ribbon with sheets of flame may be provided under a hood structure at the front of the bath. A single bath chamber, the floor of which may be stepped, may be provided or two separate baths with a connecting transfer bath may be'used, one bath heating and the other cooling the ribbon. Specification 746,286 is referred to.
Patent GB-1421950-A (GB)
Title: Discharge from hoppers
IPC: B65D88/28
Filed: 1973-07-20
Abstract: 1421950 Facilitating the discharge of hoppers SIMON-CARVES Ltd 18 June 1974 [20 July 1973] 34814/73 Heading B8S A device for facilitating the discharge of material under the influence of gravity from a hopper 10 whose cross-sectional area in the horizontal plane reduces gradually at least over the lower part towards an outlet 11 thereof, comprises a helical blade 12 rigidly secured to and within the hopper 10 and so dimensioned and arranged to impart a circular component of motion to material as it runs through the lower regions of the hopper 10 towards the outlet 11. The inner edge of the blade 12 lies on the surface of a cylinder whose axis is parallel to the vertical axis of the hopper 10 and is offset therefrom, Fig. 2 (not shown), the embodiment illustrated.
Patent GB-864537-A (GB)
Title: Method of bonding fluorine-containing plastics
IPC: C08J7/12
Filed: 1957-11-08
Abstract: 864,537. Laminates. FARBWERKE HOECHST A.G. Nov. 8, 1957 [Nov. 8, 1956], No. 34964/57. Class 140. The bonding of fluorine-containing polymers to each other or to other materials by means of a bonding agent is facilitated by pretreatment of the polymers with a solution or suspension in liquid ammonia of an amide and/or an acetylide of an alkali or alkaline earth metal, or with an organo-metal compound of aluminium, magnesium, or zinc, preferably in inert organic solution. The materials treated include polymers and copolymers of fluoro- or fluoro-chloroethylenes substituted with 1, 2 or 3 fluorine atoms and 1 or 2 chlorine atoms, and tetrafluoroethylene alone or as a co-component. Bonding agents include organic solutions of epoxy resins containing amines or anhydrides as hardeners. Treating agents specified include the amides of lithium, sodium, potassium and calcium, the acetylides of sodium and lithium, and the following organo-alkyl compounds, viz. triethyl- and tripropyl aluminium, ethyl aluminium chloride, mono- and di-alkyl aluminium chlorides in admixture, ethyl magnesium chloride, and zinc diethyl. The polymers may be bonded to metals, wood, ceramic materials, concrete, leather or glass fabrics. Examples describe (1) treating a film of polytrifluoro-chloroethylene with sodamide in liquid ammonia and bonding it to sheet-iron with a diphenylolpropane epoxy resin, (2) treating a film of a trifluorochloroethylene-vinylidene fluoride copolymer (98%/2%) with sodium acetylide in liquid ammonia and bonding it to iron as in (1), (3) replacing the treating agent in (2) by triethyl aluminium. Specification 791,092 is referred to,