baber/WOPTO huggingface dataset:
Patent GB-1262319-A (GB)
Title: Thin film capacitor
IPC: C23C14/08
Filed: 1969-03-24
Abstract: 1,262,319. Thin film capacitors. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. 24 March, 1969 [25 March, 1968; 13 Sept., 1968 (3)], No. 15337/69. Heading H1M. [Also in Division C7] A thin film capacitor comprises a vacuum evaporated titanium electrode 2 on a substrate 1, a dielectric layer 4 consisting of lead oxide, titanium dioxide and lead titanate, the surface of the titanium electrode 2 being oxidized, and a vacuum evaporated counter-electrode 5. Layer 4 may be formed by sputtering in an oxygen atmosphere, preferably at 100‹ to 300‹ C. from a cathode comprising a mixture of lead and titanium, the surface of electrode 2 being oxidized simultaneously. A magnetron type sputtering apparatus may be employed (Figs. 2, 3, not shown). The counter-electrode may be gold.
Patent GB-344724-A (GB)
Title: Improvements in or relating to furnace roofs
IPC: F27D1/02
Filed: 1930-05-19
Abstract: 344,724. Bricks for furnaces. BLOCK, E., 93, Benderstrasse, D³sseldorf, Germany. May 19, 1930, No. 15374. [Class 87 (i).] Refractory blocks 4 suspended between hollow bars 1 are formed in their upper parts with convex faces 5 which bear on the corresponding concave side faces 2 of the bars so that some degree of rotative movement of the blocks is possible.
Patent GB-1248709-A (GB)
Title: A process for epoxidizing olefins with organic hydroperoxides
IPC: B01J23/22
Filed: 1970-04-01
Abstract: 1,248,709. Epoxides. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 1 April, 1970 [2 April,-1969], No. 15375/70. Heading C2C. Epoxides are produced by reacting one or more olefinic compounds with one or more organic hydroperoxides using a catalyst which is insoluble in the reaction mixture and comprising vanadium in chemical combination with a solid silica and/or inorganic silicate. The preferred olefinic starting materials are olefinic hydrocarbons having 2-10 carbon atoms, butadiene, and olefinic compounds substituted by hydroxy groups or halogens, e.g. allyl alcohol, crotyl alcohol and allyl chloride. Suitable organic hydroperoxides are those of formula ROOH in which R is a C 3 -C 20  hydrocarbon group, in particular a secondary or tertiary alkyl or an aralkyl group of 3-10 carbon atoms. Examples describe the preparation of 1-octene oxide from 1-octene and t-butylhydroperoxide.
Patent GB-402446-A (GB)
Title: Improvements in or relating to automatic burglar alarms
IPC: H01H3/14
Filed: 1932-05-31
Abstract: 402,446. Retractive switches. OLLERENSHAW, R. E., 81, Blackfriars Road, London. May 31, 1932, No. 15402. [Class 38 (v).] An electric switch particularly adapted for use in an automatic burglar alarm comprises a number of pairs of contact strips 14, 15, spaced apart in a mat 10, the strip 15 being arched between its opposite longitudinal edges. The strip 14 has a row of raised contact elements 18 with which the resilient arched contact strip 15 is forced to engage when a suitable pressure is applied at any point along its length, thus closing the alarm circuit. The edges of the strips 14, 15 are insulated from one another by adhesive tape 16, 17, or by a layer of paper having apertures registering with the projections 18. The series of strips 14 may be replaced by a single sheet of metal having spaced projections 18.
Patent GB-632967-A (GB)
Title: Improvements in bleaching of ground wood pulp
IPC: D21C9/16
Filed: 1947-06-11
Abstract: Ground wood pulp is bleached by means of a solution containing a peroxide at a temperature within the range of 26 DEG  to 49 DEG  C. and, during the major portion of the process, the pH value is maintained within the range 10 to 11.  The solution preferably contains from 0.25 to 10 parts of alkali metal peroxide per 100 parts of dry pulp.  Sodium silicate may also be present in the proportion 6 to 10 parts per 100 parts of dry pulp.  In example (1), ground wood pulp slurry of consistency 5 to 10 per cent is bleached at 38 DEG  C. with a solution containing 1.5 per cent of sodium peroxide and 6 per cent of sodium silicate based on the dry weight of the pulp, at a pH of 10.0 to 10.5.  In example (2), the ground wood pulp is bleached at 38 DEG  C. with a solution containing 4 per cent of sodium peroxide and 10 per cent of sodium silicate based on the dry weight of the pulp, at a pH of 10.5.  In example (3), the pulp is bleached at 32 DEG  C. with 2 per cent of sodium peroxide and 6 per cent of sodium silicate at a pH of 10.2.
Patent GB-612447-A (GB)
Title: Improvements in corsets and wearing apparel of a similar character
IPC: A41C1/00
Filed: 1946-05-21
Abstract: 612,447. Corsets. LEVY, S., and CAPRICE, Ltd. May 21, 1946, No. 15430. [Class 141] A corset or the like is made of two-way stretch material reinforced at the front and back by strips 7, 8 which are stretchable only longitudinally. The strips 7 are arranged chevron fashion at the upperpart of the front, and the strips 8 horizontally at the lower part of the back. Similar strips 3, 4, 5 are arranged vertically at the front, back and sides. The corset is of the closed type and may be combined with a brassiere or leg portions.
Patent GB-644915-A (GB)
Title: Lower alkyl esters of n-acylamino aliphatic carboxylic acids
IPC: C07C233/45
Filed: 1947-06-12
Abstract: Lower alkyl esters, i.e. methyl, ethyl and propyl esters, of N-acylamino aliphatic carboxylic acids are prepared by heating the N-acylamino acid with about one molar equivalent of dialkyl sulphite in presence of an acidic catalyst and an alcohol having the same alkyl group as the sulphite.  The quantity of acid and of alcohol required is small.  N-acylglycines are prepared by treating glycines with an acyl chloride.  In the examples: (1) N-n-butyrylglycine is prepared from glycine and butyryl chloride and then refluxed with dimethyl sulphite in methanolic hydrogen chloride to give the methyl ester; (2) n-caproylglycine; and (3) iso-valerylglycine are both prepared and then esterified as in example (1).  The Specification as open to inspection under Sect. 91 comprises a general method for the esterification of any carboxylic acid by the method above described. This subject-matter does not appear in the Specification as accepted.
Patent GB-756046-A (GB)
Title: Improvements in boiler furnaces
IPC: F23J1/00
Filed: 1953-06-04
Abstract: 756,046. Boiler furnaces; SMITH, W. H: Sept. 3, 1954 [June 4, 1953], No. 15476/53. Class 51(1). A boiler furnace has a fan operated to supply forced draught thereto, mechanical means to eject clinker from the fire-box, power operated means for transporting the clinker after ejection from the firebox away from the furnace and means for operating the clinker ejecting means and clinker transporting means at intervals determined by the total time for which the fan has operated since the previous removal of the clinker. In the boiler furnace shown a fan 3 supplies air to a fire-box 2 from which ashes are moved by power operated ejecting means (not shown) into a space 4' below the tire bars. The fan is operated intermittently and after predetermined total running times thereof the ejecting means are operated. The bottom of the space 4 is normally closed by a plate 5 adapted to be slidingly operated by a motor 12. Ashes from the space 4 are dropped on a conveyer 6 which is driven by a motor 11 and deposits the ashes in a receptacle 9. Both motors 11, 12, are controlled by the same electric switch which summates the time the fan 3 is operated and then, through automatic control switches, operates the motors such that the following operations take place cyclically, the fan 3 runs for a total predetermined time then the motors 11, 12 operate, the plate 5 withdraws allowing the ashes to drop onto the conveyer and then it re-closes the ash space 4 the conveyer 6 meanwhile runs for a predetermined time in order to transport the ashes to the space 9.
Patent GB-612268-A (GB)
Title: A process for improving the stitch-closeness of regenerated cellulose stockinet
IPC: D06M11/56
Filed: 1946-05-22
Abstract: A process for improving the stitch closeness of regenerated cellulose stockinette by treatment with alkali is characterized by carrying out the treatment at or slightly above room temperature with a solution of alkali hydroxide of strength above 5 per cent to which sodium sulphate or a similarly acting salt has been added, rinsing with an aqueous solution of sodium sulphate or the similarly acting salt, washing and drying.  The dyeing properties of the fabric are improved.  Satisfactory solutions are a 8 per cent solution of sodium hydroxide containing 10 per cent sodium sulphate, and for rinsing a 10 per cent solution of sodium sulphate.  In an example a regenerated cellulose stockinette is soap washed, dried and immersed for 15 minutes at room temperature in a bath containing 8 per cent sodium hydroxide and 10 per cent sodium sulphate.  After treatment it is centrifuged, rinsed at room temperature with 10 per cent sodium sulphate, washed with water and dried.
Patent GB-544741-A (GB)
Title: Improvements in or relating to the treatment of siliceous material and the manufacture of glass
IPC: C03C1/00
Filed: 1940-10-21
Abstract: 544,741. Glass manufacture. GARBISCH, N. S. Oct. 21, 1940, No. 15518. Convention date, Nov. 29, 1939. [Class 56] A batch for use in the manufacture of glass comprises 65-80 per cent. of silica, 12-20 per cent. of calcium oxide, and 10-20 per cent. of alkali metal compound, at least 50 per cent. of the silica being derived from sand which has been used for grinding plate glass and been freed from iron, as described in Specification 510,241. Reference has been directed by the Comptroller to Specification 532,061.
Patent GB-459028-A (GB)
Title: Improvements in means for fixing grids in the anode protecting tubes of metal vapour converters
IPC: H01J13/20
Filed: 1936-06-03
Abstract: 459,028. Metallic-vapour apparatus. SIEMENS - SCHUCKERTWERKE AKT.- GES., Siemensstadt, Berlin. June 3, 1936, No. 15562. Convention date, June 3, 1935. Addition to 367,648. [Class 39 (i)] A grid is mounted in an anode-protecting tube by means of a single insulator resting in a cage outside the tube, and a shield screening the insulator is mounted on the stem extending from the insulator to the grid. In one form, the shield is a cylinder surrounding and loosely holding a tubular insulator parallel to the tube. In a modification, the shield 9 is of bell-shape and encloses the insulator 8 secured to the cage 2. The shield may be moulded on to the insulator and more shields than one may be employed.
Patent GB-306805-A (GB)
Title: An improved liquid fuel burner apparatus or heat generator
IPC: F23C99/00
Filed: 1928-05-29
Abstract: 306,805. Sloyan, J. J. Feb. 25, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Spray burners; liquid fuel supply.-A burner apparatus or heat generator comprises a blower 3, Fig. 2 supplying air through a pipe 10 passing through the furnace to a carburettor 4 which is connected by a pipe 12 to the burner nozzle 5, the float chamber, well, and intermediate passages being maintained at the same pressure as the pressure in the pipe 10 by a pipe connection 11. The liquid fuel is supplied to the carburettor 4 from a reservoir 1 by a pump 2. The flame burner nozzle 5, Fig. 3, is welded at several points 17 to a sheath 16 carrying a spark plug 7 projecting into the nozzle for ignition purposes. Air entering through ports 13 in the burner flange 14 passes through ports 15<1> and around the mouth of the nozzle 5 to the flamewhich burns beyond the nozzle. Two or more safety fire screens 18 are provided between the carburettor and the nozzle. A primer 6 comprising a fuel supply pipe 20 controlled by a needle 22 may be provided for spraying fuel on to one screen 18 located at the base of the nozzle for obtaining a rich mixture at starting. The nozzle and sheath are tilted slightly to cause condensed fuel to draw away and become ignited. In a modified apparatus the blower 3 is arranged between the carburettor 4 and nozzle 5.
Patent GB-405625-A (GB)
Title: Improvements in or relating to methods of making welted boots and shoes
IPC: A43B9/06
Filed: 1932-06-02
Abstract: 405,625. Welted footwear. WRAGGE, F., 164, Haverstock Hill, London.-(Hurlbut, C. ; 51, Rose Street, Calt, Ontario, Canada.) June 2, 1932, No. 15662. [Class 17 (ii).] A method of making welted footwear comprises securing a welt 10 to an unshaped upper 12 by tacking stitches 18, and then stitching a one-piece insole 20 to the welt upper unit by a straight-needle sewing machine, this operation being performed without the aid of a last. The lip 24 formed by the welt, upper, and insole is then turned inwardly, Fig. 4, and an outer sole 28 stitched to the welt 10 after the insertion of a filler 26.
Patent GB-1015655-A (GB)
Title: Hexathiocyanatoplatinic acid
IPC: C01C3/20
Filed: 1964-04-15
Abstract: A platinum-alumina catalyst free from chlorne prepared from hexathiocyanato platinic acid (see Division B1) may be used for hydrogenating unsaturated compounds to produce saturated compounds, e.g. benzene to cyclohexane and ethylbenzene to ethylcyclohexane. The catalyst may also be used in dehydrogenating paraffins, e.g. normal butane to butylenes, and in reforming straight run petroleum naphthas to improve their octane number.ALSO:Hexathiocyanato platinic acid may be prepared by contacting an aqueous solution of M2 Pt(SCN)6, where M is ammonium or an alkali metal with a strongly acidic cation exchange resin. Specified resins contain the SO3H group such as sulphonated coals, sulphonated phenolformaldehyde resins, sulphonated polymers of coumarone-indene with cyclopentadiene, coumarone-indene with cyclopentadiene and furfural and of cyclopentadiene with furfural. The preferred cation exchange resin is a sulphonated polystyrene e.g. a divinyl benzene cross-linked polystyrene-bearing ionisable or functional nuclear sulphonic acid groups.  The hexathiocyanato platinic acid may be used to prepare a platinum-alumina catalyst uncontaminated by chlorine (see Division B1).ALSO:A platinum catalyst free from chlorine and supported on alumina may be made by stirring a solution of hexathiocyanato platinic acid into an aqueous alumina gel slurry, adding water saturated with H2S, adjusting the pH to 7,0 by addition to ammonia, drum drying and calcining.
Patent GB-689086-A (GB)
Title: Machine for grinding gears
IPC: B23F23/12
Filed: 1949-10-11
Abstract: 689,086. Gear -- grinding. GLEASON WORKS. Oct. 11, 1949 [Oct. 23, 1948], No. 15699/51. Divided out of 689,037. Drawings to Specification. Class 83 (iii). [Also in Group XXIII] A machine for grinding gears. comprises a dresser for dressing the grinding-wheel, means for relatively moving the work and the wheel to grind the tooth surfaces of the work, means for stopping the grinding operation when all the teeth have been ground, and means movable step-by-step to vary the depth of grinding. The machine described is identical with that of Specification 689,037.
Patent GB-715037-A (GB)
Title: Polymeric compositions
Inventor: VAUGHAN MERVYN FRANCIS
IPC: C08K5/14
Filed: 1951-07-03
Abstract: Insoluble and infusible polymers of 2, 4-dimethyl styrene are obtained by curing above 40 DEG  C. in the presence of a peroxide of the general formula C(CH3)3-O-O-R (where R is a monovalent radical, such as alkyl, hydroxy-alkyl, acyl, aralkyl, cycloalkyl or alkenyl or their substituted derivatives).  Peroxide compounds mentioned are, t-butyl-methyl, -ethyl, -propyl, -alkyl, -crotyl, -1-hydroxy-methyl, -1-hydroxy-ethyl, -pentamethyl-ethyl, -ethyl -benzyl, -a -hydroxy-benzyl, and -1-methyl-cyclohexyl peroxides, di-t-butyl peroxide, and t-butyl peracetate, perpropionate, perstearate, peradipate, persuccinate, percrotonate, perundecenoate, perbenzoate, perphthalate, perchlorobenzoate, peranisoate and perdinitrobenzoate. The peroxide may be mixed with the powdered polymer, or with a solution of the polymer, e.g. in benzene, toluene, xylene or chloroform, which is then evaporated, or with a solution of the polymer in the monomer.  In a modification the peroxide is admixed with the monomer, which is then polymerized by heat and cured by a further heating step.  Glass cloth may be impregnated with a polymer-monomer solution which may be cured by heat to produce a rigid product.  Plasticizers, fillers, lubricants, pigments and dyes may be included in compositions which may be cured to form mouldings, coatings or ion-exchange resins.
Patent GB-508563-A (GB)
Title: Improvements relating to lawn mowers
IPC: A01D57/01
Filed: 1937-12-30
Abstract: 508,563. Lown-mowers. BARNETT, C., and BARNETT, W. Dec. 30, 1937, No. 15728/39. Divided out of 522,146. [Class 6 (ii)] The rotary cutter of a mower is enclosed in a casing which at the front extends close to the level of the grass so that the suction produced by the rotating blades prevents the grass in front of the cutter from being blown downwards. The front of the casing may be provided with louvres through which air expelled by the blades is directed to raise the grass in front of the cutter. Figs. 1 and 3 show a motor-driven mower in which the cutter 1 is enclosed in a casing 18 which is open at the bottom and provided with louvres 18<1>. A channel 19 carries the cut grass to a box 55. The cutter blades co-operate with a fixed blade 7. The invention is shown applied to a mower in which the rotary cutter is driven by a belt 34 from an engine 2 mounted between the side members of the machine and on a plate 40 welded to tubes 27, 28 which constitute the petrol tank and exhaust manifold. A magneto and spring starter are also mounted on the plate 30. The tension of the belt 34 can be adjusted by a roller 51. The mower may be manually propelled, the engine being used for rotating the cutter, or the engine may be used for propelling the mower in which case the front roller 3 is provided with internal teeth engaged by a pinion 58 driven by a belt from the cutter shaft 6. The cutter shaft 6 is mounted in bearings in blocks 8 supported in a frame 9 shown in Fig. 4. The frame is made in one. piece, the ledger blade 7 being, screwed to the lower member 12. The side members 10 are formed with recesses 13 to receive the blocks 8 which are pressed upwards by springs 14 against an adjustable bolt 15. The distance between the rotary cutter and ledger blade 7 can thus be adjusted. The recesses are closed in front by a bracket member 22 and grooves 20 on the blocks 8 engage corresponding projections 21 on the member 22 and on the walls of the recesses 13. The cutter is removed by first removing the brackets 22 with the roller 3 and then sliding the blocks 8 out of the recesses 13. The rear and side walls of the casing 18 are formed by a curved plate 16 fixed to the frame 9 and plates 17 fixed to the blocks 8. The handle 41 is pivoted at 43 and can be adjusted by a, bolt 44 and slot 44<1>. The height of the back roller 4 can be adjusted by moving arms 46 pivoted at 47 and carrying the axle 45 by means of a rod 48 carrying a screw knob 50. Specifications 508,564 and 522,146 are referred to.
Patent GB-251795-A (GB)
Title: Improvements in or relating to the suction valves of air and gas compressors
IPC: F04B39/00
Filed: 1925-06-18
Abstract: 251,795. Prestage, E. June 18, 1925. Valve gear. - A mushroom valve b in the trunk piston of a compressor is held down by a spring c and lifted by a rocking arm d having a projection g engaged by a roller f carried between lugs on the connecting-rod. Owing to the lost motion of the roller at the end of its travel, the closing of the valve is delayed.
Patent GB-301283-A (GB)
Title: Improvements in or relating to kedge anchors
IPC: A01K75/06
Filed: 1928-05-30
Abstract: 301,283. Mansell, C. A. May 30, 1928. Anchors. - A kedge anchor which may also be employed as an anchorage for fishing traps comprises a hollow body 3 preferably pyramidal in shape and closed by a weighted base 1 furnished with prongs 2. The body is filled with weighty material such as sand or gravel and is lowered by the line 9 secured to the rod 7 embedded in the base 1. When the anchor is to be raised, one side 4 of the body, which works in suitable guides, is removed by hauling on the line 6 and allows the sand &c. to escape.
Patent GB-1032337-A (GB)
Title: Root crop harvester
IPC: A01D19/16
Filed: 1965-04-13
Abstract: 1,032,337. Root crop harvesters. SOC. D'ETUDES ET DE CONSTRUCTIONS MECANIQUES DE CORBELL. April 13, 1965 No. 15830/65. Addition to 1,022,019. Heading A1F. A root crop harvester similar to that described in Specification 1,022,019 includes two gate members, each comprising a vertical rod 42 (Figs 1 and 3, not shown) and horizontal bars 44, and each journalled in lugs 40 of sleeves 8. The members are urged by springs 49 to the positions shown, but, when engaged by root crops, pivot about vertical axes to allow the root crops to pass to the discharge-opening 37. The grid 4 may be of larger diameter and may be driven at a greater speed than the grid 5.
Patent GB-568960-A (GB)
Title: Improvements in and relating to high pressure mercury vapour discharge tubes
IPC: H01J61/34
Filed: 1943-09-28
Abstract: 568,960. Discharge lamps. HANOVIA, Ltd., and KOLBERT, J. W. Sept. 28, 1943, No. 15918. [Class 39 (i)] [Also in Group VI] An ultra-violet irradiator comprises a mercury vapour discharge lamp I having solid electrodes 2 and 3 and disposed within a surrounding double-walled transparent jacket 12 made of a substance permeable to ultraviolet radiation and adapted for the flow through it of a cooling medium and enclosed within an outer casing from which the jacket projects. The electrodes may be formed of molybdenum or tungsten activated with barium oxide and the jacket 12 may be formed of quartz. The seals 6 of the discharge tube are disposed in bores in a metal cylinder 8 which aid in dissipating the heat emitted from the tube. The cooling medium -may be conducted to and from connections 17 to the jacket by rubber tubes 14. The casing 21 may be made of metal, glass, silica, transparent quartz or phenol-formaldehyde condensation products. Specifications 474,982, [Group XXXVI], and 488,516 are referred to.
Patent GB-239956-A (GB)
Title: Improvements in and relating to vapour generators, intended particularly for vaporising mercury
IPC: F22B27/12
Filed: 1924-07-02
Abstract: 239,956. British Thomson-Houston Co., Ltd., and Collingham, R. H. July 2, 1924. Vapour engines.-In a mercury vapour generator of the rotating tube type, to prevent the escape of fluid from the generating tubes, their ends are provided with sealing devices in each of which a static head of liquid mercury forming a seal is counterbalanced by the pressure created by a set of rotating impellers. The casings 5 of the sealing devices at the ends of a rotating tube 1 are divided internally by partitions 6 forming compartments in which rotate vaned members 7 secured to the .liquid inlet and vapour outlet tubes 2, 3. Carbon rings 9 are pressed against collars 8 on the inlet and outlet pipes by flexible metallic bellows 10 secured to the casings 5. Mercury is supplied from the condenser sump 17 through a pipe 16. A branch pipe 24 supplies mercury to the casing around the outlet pipe, the mercury entering between walls 12 separated by radial ribs. Vaned members 11 in this casing create a pressure in opposition to that created by the members 7. Spaces around the bellows are connected to the condenser by pipes 18, 19 containing traps 20, 21 fitted with baffles 22.
Patent GB-211776-A (GB)
Title: Improvements in and relating to dynamo-electric machines
IPC: H02K5/124
Filed: 1923-06-20
Abstract: 211,776. British Thomson-Houston Co., Ltd., (General Electric Co.). June 20, 1923. Joint-making packing.-In a dynamo-electric machine which is cooled by the circulation of a gas lighter than air, the joints of the casing. especially at the bearings, are sealed by liquid such as oil under pressure. The bearing- housing 10 is attached to the end wall 11 of the casing by a flange 13 in which is formed a groove 12 to which oil under pressure greater than that obtaining in the casing is supplied by a pipe 8 and a passage 14 in the wall of the housing.