baber/WOPTO huggingface dataset:
Patent GB-837838-A (GB)
Title: New imidazole derivatives and processes for their preparation
IPC: A61K31/00
Filed: 1958-08-14
Abstract: The invention comprises compounds of the general formula <FORM:0837838/IV (b)/1> p  and their acid addition salts (wherein R1 is methyl or ethyl and R2 is an alkyl group with not more than six carbon atoms, such that the total number of carbon atoms in R1 and R2 is at least 3), and the preparation thereof by (1) alkylating a nitroimidazole of the general formula <FORM:0837838/IV (b)/2> or (2) nitrating an imidazole of the general formula <FORM:0837838/IV (b)/3> and separating from the reaction product the desired nitroimidazole. 2-Ethyl-4(5)-nitroimidazole is made by nitrating the acid sulphate of 2-ethylimidazole.ALSO:Pharmaceutical compositions comprise one or more compounds of the general formula <FORM:0837838/VI/1> or an acid addition salt thereof (wherein R1 is methyl or ethyl and R2 is an alkyl group with not more than six carbon atoms, such that the total number of carbon atoms in R1 and R2 is at least 3) and a significant amount of a pharmaceutical carrier which may be a solid or liquid. They may be administered orally (e.g. as emulsions, elixirs, powders, solutions, suspensions, syrups or tablets), parenterally (e.g. as sterile solutions or suspensions in water or other liquids, with or without the addition of soluble or insoluble diluents and/or solid or liquid excipients) or topically (e.g. by incorporation in a suitable vehicle such as a cream, lotion, ointment, ovule, pessary or suspension).  Unit dose forms may be compressed powders (or tablets) or powders enclosed in suitable capsules of absorbable material such as gelatin.  The compressed powders (or tablets) can take the form of the active materials admixed with suitable excipients and/or diluents such as dextrin, lactose, magnesium stearate, starch or stearic acid. Generally, the compositions should contain at least 0.025% by weight of active substance in the case of injectable solutions and at least 0.1% by weight of such substance in the case of oral preparations. The active material may, as such or in the form of a diluted composition, be put up in powder packets and employed as such. The compositions are particularly of value in the treatment of infections due to pathogenic protozoa such as certain species of amaeba or of trichomonas.
Patent GB-616432-A (GB)
Title: Improvements relating to turbine rotors and the like bladed structures
IPC: F01D5/28
Filed: 1946-08-30
Abstract: The outer periphery of a turbine or compressor rotor is of material of a high creep strength and the central portion is of a different material of high proof stress.  For the outer periphery, a suitable alloy contains: chromium 10-20 per cent (15); nickel 15-20 per cent (18); titanium 0-3 per cent (0.7); molybdenum 0-5 per cent (4); copper 0-5 per cent (4); cobalt 0-20 per cent (8); carbon 0-5 per cent (0.2); the remainder being iron.  For the centre, a suitable alloy contains: chromium 0-14 per cent (2.8); molybdenum 0-1.5 per cent (0.4); vanadium 0-1.5 per cent (0.8); tungsten 0-1.5 per cent (0.4); silicon 0-8 per cent (0.4); carbon 0-0.6 per cent (0.2); the remainder being iron.  The figures in brackets indicate the per centage composition of preferred alloys in the above ranges.  The two alloys may be such that their respective properties are induced by heat treatment of the composite rotor.  Reference has been directed by the Comptroller to Specification 608,476.
Patent GB-172728-A (GB)
Title: Improvements relating to electrode holders
IPC: B23K9/28
Filed: 1920-09-13
Abstract: 172,728. Heasman, R. W. Sept. 13, 1920. Heating by electricity.-A holder for an arc welding electrode comprises a tongs-like device of two parts a, b of steel, copper alloy or other metal connected by a pivot c<1>. The part b is slotted to receive the sharply bent portion e of the part a the electrode f being gripped at the end of the slot by the end surface of the part e. One or both of the opposing gripping surfaces may be V-shaped or otherwise irregularly formed to grip the electrode on more than two contact lines. Insulated sleeves cover the handle portions of the parts a, b the welding current being supplied to a rod a' passing through the member a. A shield to protect the hand may be fitted. The holder may be formed with an open slot so that the electrode may be introduced from the side. In a modification the portion e is only slightly inclined from the axis of the handle a.
Patent GB-1507115-A (GB)
Title: Transistor having integrated protection
IPC: H01L29/73
Filed: 1976-06-24
Abstract: 1507115 Bipolar transistors RCA CORPORATION 24 June 1976 [3 July 1975] 26343/76 Heading H1K A planar bipolar transistor as illustrated is protected against damage due to localized hot spots arising from breakdown of the collector junction 14 by the highly doped region 30 forming an annular low breakdown voltage PN junction with the highly doped portion 22 of the base zone. In operation before the collectorbase voltage exceeds the breakdown voltage of junction 14 the collector depletion region punches through to region 30 to cause avalanche breakdown of junction 32. The resultant high current is uniformly distributed thus avoiding destructive high spots.
Patent GB-468136-A (GB)
Title: Illuminated sign
IPC: G09F13/26
Filed: 1935-09-24
Abstract: 468,136. Discharge lamps. PIPER, W. B. Sept. 24, 1935, No. 26431. Convention date, Sept. 27, 1934. [Class 39 (i)] [Also in Group XVIII] A sign comprises a front sheet of glass having moulded in its rear face a gas discharge channel shaped to the outline of a character and provided with one or more integral transverse partitions, and a rear glass sheet secured to the front sheet by fusion, these partitions forming by themselves or in conjunction with jumper channels in the rear sheet a single path for the gas discharge between two electrodes. As shown in Figs. 3 and 5, a sign unit mounted in a box 5, comprises a plate 19 with raised portions 20 shaped as a letter E, and a channel 13 of corresponding outline provided with a transverse partition 15, and a plate 21 formed with a jumper channel 18. This channel 18 together with the partition 15 permits of a single path for the gas-discharge between electrodes 12, 17, Fig. 6. Each electrode shell 24 is housed in a tube 23 moulded in an aperture in the plate 21 communicating with the channel 13. The plate 19 fits loosely between flanges 22 on the plate 21 and is positioned before fusing by a bead 41. The parts of the plate 19 around the raised portions 20 are covered by opaque sheets 29 secured by metal strips 28. The channel 13 may be formed with a longitudinal partition throughout its length to provide two separate channels into which gases producing differently coloured discharges may be introduced. The rear of the plate 21 may be silvered and the face of the letter coated with translucent enamel. Specification 468,134 is referred to. The Specification as open to inspection under Sect. 91 comprises also an arrangement in which an illuminated plaque comprises two superposed sheets, closely spaced parallel channels forming a continuous path for the gas discharge being provided in the rear face of the front sheet. In a modification, two sheets provided with channels in their rear face as above, are secured on opposite faces of a plain sheet, the channels of the two sheets being echelon. This subject-matter does not appear in the Specification as accepted. Reference has been directed by the Comptroller to British Specification 325,592, [Class 39 (i)], and U.S.A. Specifications 1,825,399 and 1,908,393.
Patent GB-629201-A (GB)
Title: Planographic printing plate
IPC: C25D3/04
Filed: 1947-10-01
Abstract: 629,201. Electroplating printing plates. TIME, Inc. Oct. 1, 1947, No. 26535. Convention date, Oct. 4, 1946. [Class 41] [Also in Group XVI] A process of preparing a planographic printing plate (see also Group XVI) comprises immersing the surface of a metallic plate in a plating bath containing an aqueous solution of chromium trioxide and sulphuric acid substantially in the proportions of 40 ozs. of chromium trioxide and .37 ozs. of sulphuric acid per United States gallon of water, electroplating the plate with chromium at a current density of substantially 1.5 amps per sq. inch and a potential of substantially 4.5 to 5 volts for a period of substantially 1.5 to 3 minutes, interrupting the current for substantially 15 seconds, and resuming the plating operation for substantially a further minute while maintaining the bath at a temperature of substantially 105 to 108 F. Before the plate is immersed in the bath a resist image is applied to and baked on the surface, the exposed part of which is then cleaned, for example, by a solution of glacial acetic acid and common salt, and afterwards etched. The image is removed on completion of the chromium plating. Alternatively the resist image is applied to the plate before it is chromiumplated.
Patent GB-808011-A (GB)
Title: Transfer apparatus for a press
IPC: B21D43/05
Filed: 1956-08-31
Abstract: 808,011. Metal-working presses. SHEFFIELD CORPORATION. Aug. 31,1956 [Sept. 6, 1955], No. 26662/56. Class 83 (4). A mechanism for transferring workpieces between stations in a press 30 having at each station a die 36 on the press bed 32 co-operating with a punch 35 on the press ram 31, comprises a unitary detachable structure 50 having a workpiece engaging jaw 68 supported for movement on the press bed relatively to the work stations by means of an actuator 52 driven from the press ram. The mechanism is used for transferring workpieces 37, Fig. 2, formed from sheet metal 41, Fig. 1, drawn by feed rollers 43 from a supply roll 42, between successive die stations in the press. At each station there is an upper punch 35 and a lower die 36, Fig. 2; alternatively a plurality of punches and dies may be provided at each station to enable a plurality of workpieces to be pressed simultaneously. The transfer mechanism preferably comprises two similar detachable transfer units 50, 51 disposed on opposite sides of the dies and having jaws 68, 69 mounted on slides 66, 67 movable in the transfer direction 40 on carriages 64, 65 which are movable inwardly along rails 60-63. During the upstroke of the press the jaws move inwardly to grip workpieces, raised from their dies by spring pads, and then transfer them to the right; during the subsequent downstroke the jaws are withdrawn and-the slides then return to the left. Each transfer unit is actuated from the press ram 31 by a connecting rod 54, 55 adjustably connected at 80 to the actuator which comprises a cam arm 78 oscillatable through 90 degrees about a horizontal shaft. The cam arm has a cam groove 85, Fig. 12, engaged by a follower 86 on a rocker plate 87 pivoted at 88 and adjustably connected by a screw-operated slide 89 with a connecting-rod 92 connected to a reciprocable carriage 94, Fig. 7. The latter actuates the slide 66 through a lever 105 and lazy-tongs linkage 155 connected to the slide 66 by a rack-and-pinion mechanism 156, Fig. 9 (not shown), which amplifies the movement of the slide. A spring arm 180 on slide 66 engages a fixed detent at the end of its stroke to ensure correct location of the jaws. The caxriage 64 is guided for movement along its rails 60, 61 by rollers 144, 145 and is actuated by a lazy-tongs linkage 136 connected to the carriage at 138 and having a roller follower 125 engaging in a peripheral cam groove 113 in an oscillating cam 110 fixed to the same shaft as the cam arm 78. An index 81, 82 on the latter enables its oscillation of 90 degrees to be adjusted correctly by movement of the connection 80, Fig. 1. The stroke of the slide 66 is adjusted by movement of the block 89, Fig. 12. The jaws have fingers 70, 71 of unequal length to facilitate quick retraction of the jaws during the pressing stroke.
Patent GB-343989-A (GB)
Title: The manufacture of esters of sulphonated fatty acids
IPC: C11C3/00
Filed: 1929-09-02
Abstract: Esters of sulphonated hydroxy or sulphonated unsaturated fatty acids are obtained by treating the latter after neutralization with an ester of an aliphatic or aromatic-aliphatic alcohol with an inorganic acid or an arylsulphonic acid.  In examples: (1) oleic acid is sulphonated, made alkaline with sodium carbonate and then treated with diethylsulphate; (2) the sulphuric ester of ricinoleic acid is made alkaline with borax and treated with p-toluenesulphonic methyl ester; (3) sulphonated oleic acid is made alkaline with sodium carbonate and then treated with benzylchloride.  According to the Provisional Specification monohydric alcohols may be used for the esterification and fats and oils in place of the free fatty acids.
Patent GB-877025-A (GB)
Title: Method of making calcareous-silicious insulating material
Inventor: HOOPES HARRY PAUL
IPC: C04B28/18
Filed: 1959-08-05
Abstract: 877,025. Moulding insulating materials plastic compositions. FIBREBOARD PAPER PRODUCTS CORPORATION. Aug. 5, 1959, No. 26690/59. Classes 22 and 87(2). Relates to a method of making a light weight mass of heat insulating material by setting, in a mould, an aqueous slurry containing reactable calcaceous and silicious materials and reinforcing fibre and subjecting it to indurating treatment and consists in incorporating in the slurry an anhydrous alkali metal silicate accelerator selected from the group consisting of anhydrous sodium silicate and anhydrous potassium silicate. The proportion of accelerator is from 1% to 20% by weight based on the total solids in the slurry, and it has a mol ratio of alkali metal oxide to silica between 1 to 2 and 1 to 3À5. The use of anhydrous alkali metal silicate for an accelerator is stated to be an improvement on that of an alkali metal such as sodium hydroxide or liquid sodium silicate especially in reducing shrinkage in the mould. A preferred range of preparations of solid ingredients in the slurry, by weight is: Diatomaceous earth 40-65 Lime hydrate or quicklime 20-45 Asbestos fibre 10-20 Anhydrous sodium or potassium silicate 1-20 Sugar retarding agent 0À1-3 In operation, asbestos fibres 2 are mixed with water in a vessel 6 and the other solids are mixed with water in a vessel 7; then the contents of the vessels 6, 7 are mixed in a mixer 8 to form the slurry. The slurry is transferred by a travelling hopper 9 to a container 11 in which it is preheated by live steam to about the boiling point of water. The preheated slurry is then transferred to a heated mould 12. Reciprocating fingers 13 orient the reinforcing fibres and enable trapped air to escape and are gradually withdrawn, leaving the set material to be discharged from the mould by an ejector 14. The moulded light weight insulating material 16 is indurated at 17 under steam pressure and finally dried in an oven 18. Specific examples are given of the application of the invention and data regarding gelling and pre-heating times and temperatures, and shrinkage amounts.
Patent GB-407412-A (GB)
Title: Improved means for tuning wireless receiving apparatus
IPC: H03J5/08
Filed: 1932-09-27
Abstract: 407,412. Adjusting wireless apparatus. ALLDRIDGE, S. W. A., 24, Stokewood Road, Bournemouth. Sept. 27, 1932, Nos. 26743/32 and 18031 /33. [Class 37.] A tuning-control member selectively cooperates with stops to set the tuning element and comprises an arm which operates the shaft of the tuning element and engages with one or other of the stops. In one construction, Fig. 4, an arm 9 is pivotally mounted on a sleeve 6 connected with the condenser spindle and is rotatable in the space between a cover-plate 12 and stationary drum 3. The drum has inclined slots 10 along which the arm 9 can slide and engage the heads of adjustable screw stops 16. The part 18 of the arm 9 may be provided with an aperture to permit adjustment of the stops by a screwdriver. In another construction, Fig. 7, series of vertical and horizontal screw stops 25, 25<a> are selectively engaged by a stop on a sleeve 21 operatively connected with the control lever 20, the control shaft 19 being of square or like cross-section.
Patent GB-1043886-A (GB)
Title: Improvements in electro-magnetic coils
IPC: H01J29/66
Filed: 1963-07-05
Abstract: 1,043,886. Discharge tubes; electric coils. PHILIPS ELECTRONICS & PHARMACEUTICAL INDUSTRIES CORPORATION. July 5, 1963 [July 5, 1962], No. 26758/63. Headings H1D and H1P. An electromagnet coil, e.g. for use in an electron microscope or a travelling wave tube is built up from a stack of layers, each layer comprising a conductive sheet, e.g. copper 2 mil. thick, having several radial slots, one of which extends to a central aperture; current flows round each layer from an electrode adjacent -one edge of the extended slot to an electrode adjacent the other side of the slot, one electrode of each layer being connected to an adjacent layer, but the layers being otherwise insulated, e.g. by a 10 mil. layer of silicon dioxide and the layers staggered so as not to short out the path round each layer. The segments of each layer serve as cooling fins. The electrodes may be solder spots, and the device may be assembled by stacking the layers, and then heating to fuse the solder.
Patent GB-1157011-A (GB)
Title: Monoazo Dyes containing a Diacylamido Group
Inventor: WALLACE DAVID JEFFERSON
IPC: C09B43/12
Filed: 1966-06-16
Abstract: 1,157,011. Monoazo dyes. EASTMAN KODAK CO. 16 June, 1966 [16 June, 1965], No. 26920/66. Addition to 1,155,553. Heading C4P. The invention comprises dyes of the formula wherein R and R 1  each represent an unsubstituted or substituted carbocyclic aromatic group; R 2  represents H, alkyl or a carbocyclic aromatic group; R 3  represents alkylene; and X and Y represent the same or different acyl groups. They may be obtained by coupling a  diazotized amine of the formula RNH 2  with a coupling component of the formula Examples are given for the production of the dyes. They are useful for dyeing synthetic polymer fibres, yarns and fabrics.
Patent GB-407626-A (GB)
Title: Improvements in or relating to jacking attachments for two-wheeled trailers and other road vehicles
IPC: B60S9/04
Filed: 1933-09-30
Abstract: 407,626. Jacking-attachments on road vehicles. COX, N. W., 2, Ravenscourt Square, Hammersmith, London. Sept. 30, 1933, No. 26924. [Class 79 (iii).] A jacking-attachment for two-wheeled trailers and other road vehicles comprises a lever L pivoted at one end to a channel casing E which houses a rod B with a hexagonal head for rotation by a hand brace and opposite screw threads, one engaging a fixed nut D giving aggregate motion to a slidable nut F, a pair of parallel links K from the nut F serving to depress or raise the lever L. A guard rail H forms a closure member for the casing and a bearing for the nut F. To provide lateral stability, the lever carries an inclined stay extending from its lower end to a pivot co-axial with and some distance behind the lever fulcrum G, the pivot being carried by a rearwardly extending bar welded to the casing E at X<1>. The pivoted ground-plate or foot M is so weighted as to tilt into alignment with the lever L when off the ground.
Patent GB-293844-A (GB)
Title: Improvements in or relating to audible signalling devices
IPC: G10K9/18
Filed: 1927-10-11
Abstract: 293,844. Sparks-Withington Co., (Assignees of Sparks, W., Scofield, T. J., Johnson, L. E., and Billig, F. W.). July 15, 1927, [Convention date]. Fixed abutment type. - Air under pressure for sounding warning horns 60 is supplied to a chamber 17 by a motor 1 mounted at its lower end in an adjustable bearing 5 and connected at its upper end through a key 50 to a rotor 13 in an eccentrically-arranged casing 14. The rotor is fitted with blades 19 slidably mounted in recesses and moving outward under centrifugal force so that air drawn in through an aperture at the top of the casing 51 and passing through a passage 20 is driven into the chamber 17 through a slot 18.
Patent GB-957864-A (GB)
Title: Improvements in or relating to screw-threaded fastenings
Inventor: BALLARD ALFRED GEORGE
IPC: F16B39/34
Filed: 1960-08-04
Abstract: A locking insert for a screw fastener consists primarily of a polymeric condensation product of a diamine and a dibasic acid in which is dispersed a solid mineral lubricant in particle form. The polymer may be polyhexamethylene adipamide or polyhexamethylene sebacamide.  The lubricant may be molybdenum disulphide, tungsten disulphide, boron nitride, cadmium iodide, copper bromide and graphite.  Molybdenum disulphide of not more than 5% by weight may be used.
Patent GB-1105325-A (GB)
Title: Improvements in or relating to the production of fuel for nuclear reactors
Inventor: WILKINSON WILLIAM LIONEL
IPC: B01J2/04
Filed: 1964-06-30
Abstract: A ceramic nuclear fuel powder is mixed with a solution of a binder in an excess of an organic chlorinated hydrocarbon solvent to form a slurry which is spray-dried to produce granules of the fuel and binder.  The nuclear fuel may be UO2, UO2-PuO2, or uranium carbide. The binder solution may comprise polybutylmethacrylate and dibutyl phthalate dissolved in excess trichlorethylene. Another suitable solvent is carbon tetrachloride.  Suitable apparatus is described with reference to a drawing in which a slurry of UO2 powder and the binder solution is fed to a rotating disc type spray dryer and contacted with heated air.  The granules formed are collected, the air and solvent vapour filtered, and the solvent recovered.  A perforated tube acts as an air rake to remove product from the walls of the dryer.  Alternatively a nozzle atomizer type of spray dryer may be used.  The granules may be compacted, sintered, and the binder removed to form fuel elements.
Patent GB-1423467-A (GB)
Title: Nail for piercing sheet metal
IPC: F16B15/00
Filed: 1974-06-18
Abstract: 1423467 Nails MAX KK 18 June 1974 [19 June 1973] 27063/74 Heading F2H A nail, to be driven by a pneumatic tool through two sheets of material such as steel to join them, comprises a disc-like head 1 and a shank 2, the shank having a minor diameter circular-section portion 4 for shear forming an initial hole in the sheets 7, 8, a conically tapered portion 5 for smoothly enlarging the hole, and a major diameter circular-section portion 3 which is a tight press fit in the enlarged hole, the leading end of the nail having an annular shearing edge. The leading end is non-pointed and may be flat (as shown) or may have a notch, an arched notch, a conical recess or a semi-spherical recess (Figs. 4-7, not shown). The major diameter portion 3 may have an irregular surface provided by knurling (Fig. 8, not shown) or screwthreading (Fig. 9, not shown).