baber/WOPTO huggingface dataset:
Patent GB-409546-A (GB)
Title: Improvements relating to wire-wound grids for electron discharge tubes
IPC: H01J19/38
Filed: 1933-08-12
Abstract: 409,546. Making electric discharge apparatus. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. Aug. 12, 1933, No. 22588. Convention date, Nov. 17, 1932. [Classes 83 (ii) and 83 (iv).] Destructible cores.-Wire-wound grids for electron discharge tubes are made by placing one or more supporting members upon a core, winding the grid wire upon the core over the supporting members, and removing the core wholly or partially by chemical action after the grid has been secured to the supporting members. Alternatively, the grid may be first wound upon the core, one or more securing or supporting members fixed to the grid and the core removed wholly or partially by chemical action. Wire of 100 microns or less may be used and the grid may be annealed at a temperature of 700‹-1000‹ C. before the core is removed. In an example, one or more supporting wires 80 microns thick are secured to a core of iron 2.5 mm. thick either by welding or by means of a retaining ring which is slipped over the core. The grid wire, 40 microns thick, is wound on the core and welded to the supporting members. After annealing, the core is wholly or partially dissolved in dilute hydrochloric acid, the remainder if any being removed mechanically.
Patent GB-300720-A (GB)
Title: Improvements in or relating to photographic roll films
IPC: G03C3/02
Filed: 1927-08-29
Abstract: 300,720. French, A. L. Aug. 29, 1927. Roll-film cartridges. In a cartridge having a film backing- paper bearing exposure indicating numbers which are viewed through an aperture in the camera back, the paper is provided with series of marks or spaces bounded by gradually converging or diverging lines which are not parallel to the edges of the paper to warn the operator of the approach of a number during winding. The bounding lines areonly slightly inclined to the edges of the paper in order that the marks may be observed through a viewing aperture of the usual size and shape. As shown in Fig. 1, relatively inclined lines b may extend between the numbers, converging to or diverging from a point, and more than one pair of such lines may be provided between two numbers. Alternatively a series of transverse lines of gradually diminishing or increasing length, or a series of circles or dots of gradually diminishing or increasing diameter, may extend in wedge formation between the numbers.
Patent GB-1506635-A (GB)
Title: Curing resin-impregnated porous material
IPC: B27N7/00
Filed: 1975-05-23
Abstract: 1506635 Curing resin-impregnated material KEMI OY 23 May 1975 [24 May 1974] 22716/75 Heading F4G A resin-impregnated porous material (pine or birch wood) is cured by introducing steam into a vessel containing the wood to initiate curing, and interrupting the steam supply and maintaining a pressure in the vessel greater than the vapour pressure of the components of the resin but not high enough to prevent evaporation of steam condensate should the temperature increase.
Patent GB-501898-A (GB)
Title: Dead beat cylinder escapement for clockwork time fuses
IPC: G04B15/04
Filed: 1938-07-30
Abstract: 501,898. Clockwork escapements. RECHERCHES ETUDES APPLICATIONS TECHNIQUES, R.E.A.T., SOC. ANON. July 30, 1938, No. 22767. Convention date, July 31, 1937: [Class 139] A dead beat cylinder escapement for clockwork actuated time fuses, of the type in which the cylinder 12 has a single notch 16 coacting with a flat scape wheel 22, is characterized in that the closed curve defining the notch is of rounded form and that safety means (15 and 20, 21 respectively) are provided to prevent displacement of the cylinder with respect (1) to the hairspring and (2) to the balance wheel. A ring, fixed tightly over the integral pin 14 by means of grooves or ribs 15, has attached. to it the hairspring or torsion blade of the balance and the balance wheel 17 is fastened to the separate plug 18 having a pin 23 and a stem 19 which is adjustable without play in the bore of the cylinder and has a Hat 21 coacting with a flat 20 on the cylinder to prevent relative rotation between cylinder and plug. The cylinder has a half oscillation of 85‹ to 95‹, and the notch 16 is formed by a profiled milling cutter. The profile is preferably the intersection of a sphere with the cylinder 12.
Patent GB-322507-A (GB)
Title: Improvements in or relating to lifting jacks
IPC: B66F3/42
Filed: 1928-08-07
Abstract: 322,507. Lake & Elliot, Ltd., and Rubury, J. M. Aug. 7, 1928. Jacks.-A fluid-pressure jack comprises a casing enclosing a reservoir and pump cylinders, the pump plungers being operated by means of a handle shaft which is rocked on its longitudinal axis to reciprocate the pump plungers by means of an angular boss and a sleeve mounted on the shaft and carrying plunger-engaging projections, the shaft being also capable of an axial movement to cause the angular boss to engage a release plunger to operate the lowering valve. The crutch 16 is carried by a screwed stem 15 mounted in the inner ram 12. The casing 1 encloses the ram cylinder 9, the reservoir 8 and the pump cylinders 26. The operating handle 7 has a shaft 6 having a universal joint connection 5 to an extension shaft 4 slidably and rotatably mounted in a boss 2 on the casing. The .shaft 4 has an angular boss 19 engaging jaws 22 on a rotatable sleeve 20 having pins 23 adapted to engage slots in the pump plungers 24, so that by rocking the shaft the pump plungers .are reciprocated to cause pressure fluid to be drawn from the reservoir through valved ports 28 and forced into the ram cylinder through valved ports 33, 37. To lower the load, the shaft 6 is slid inwardly, thus disengaging the angular boss from the sleeve and positioning it above a release plunger 40. By again rocking the shaft the release plunger is depressed so as to unseat a valve 38 and allow the prssure fluid to return to the reservoir through a port 42. A stop 43 is provided on the pump cylinder housing to allow the angular boss to be pressed against it to rock the jack bodily after lowering the load so as to cause a further lowering of the crutch to facilitate removal of the jack.
Patent GB-633478-A (GB)
Title: Manufacture of new dyestuffs of the phthalocyanine series
IPC: C09B47/08
Filed: 1946-07-31
Abstract: Vat dyes of the formula P(AV)x, where P is the residue of a phthalocyanine compound, A is a linking group, V is the residue of a vattable compound, and #c is 1, 2, 3 or 4, are treated in the presence of a metal and an organic base with sulphur trioxide or with an addition compound of sulphur trioxide and an organic amide or tertiary base or with any substance known to be capable of forming sulphuric esters from vat dyestuffs in the presence of metals, or from leuco compounds, or metal salts thereof, or complex compounds comprising the metal salts thereof, or the leuco derivative of the dyestuff is treated in presence of an organic base with sulphur trioxide or equivalent body as defined above.  The vat-table residue may be of the benzoquinone, naphthoquinone, or anthraquinone series, and the linking groups may be -CH2-S-, -NH-CO-, -CO-, -S-, and the oxazole ring.  The leuco compound may be prepared by hydrogenation in presence of nickel.  Examples describe the treatment with copper powder and sodium pyrosulphate in pyridine of the following dyestuffs: (1) the product obtained by heating copper trichlormethyl phthalocyanine or metal-free trichlormethyl phthalocyanine with sodium anthraquinone-2-mercaptide; (2) the product obtained by heating copper phthalocyanine with 1-chloranthraquinone-2-carboxylic acid chloride or 2-chloroanthraquinone-3-carboxylic acid chloride in presence of ferric chloride; (3) copper tetra - 4 - (b  - anthraquinonylmercapto)-phthalocyanine (obtained by heating 2-(31 : 41-dibromophenyl)-mercapto anthraquinone with cuprous cyanide and cuprous bromide in quinoline); (4) the product obtained by heating phthalonitrile with the amide from 1-chloranthraquinone-2-carboxylic acid and 4-aminophthalonitrile and with cuprous chloride and pyridine in nitrobenzene; (5) copper tetra - 4 - (5 : 61 - phthaloylbenzoxazolyl (2))-phthalocyanine, (obtained by heating 2-(31 : 41-dibromophenyl) - 5 : 6 - phthaloyl - benzoxazole with cuprous cyanide and cuprous bromide in quinoline).  Also in examples (6) the product from heating copper phthalocyanine and 2-chloranthraquinone-3-carboxylic acid chloride in presence of ferric chloride is reacted with methyl chlorosulphonate in presence of dimethylformamide, acetone, and iron powder. Specifications 490,017 and 610,117 are referred to.
Patent GB-1188621-A (GB)
Title: An Internal Combustion Engine with a Crankcase Ventilation Valve
Inventor: MILLER ROGER GENE
IPC: F01M13/02
Filed: 1968-05-14
Abstract: 1,188,621. Crank-case ventilation; treating charge. EATON, YALE & TOWNE Inc. May 14, 1968 [June 19, 1967], No.22912/68. Heading F1B. [Also in Division G3] A flow control device connected between the crank-case and inlet manifold of an I.C. engine to regulate the rate of crank-case ventilation in response to both the manifold depression and the crank-case pressure comprises a spring-loaded ball 94 mounted in the tapered flow passage 68 of a pipe 66 connected at 67, 70 to the manifold and crank-case respectively. The movement of the ball and spring during operation of the device renders it self-cleaning. Fig.6 (not shown) illustrates the operation of the device under varying engine conditions.
Patent GB-763295-A (GB)
Title: Improvements in or relating to photographic cameras
IPC: G03B13/20
Filed: 1954-08-06
Abstract: 763,295. Photographic cameras. ROYET. P. F. Aug. 6, 1954, No. 22949/54. Class 98(1) In a twin lens camera combined with a light source, the amount of light falling on to the film is kept constant for a given shutter setting for any correctly focused position of the objective by adjustment of the diaphragm either, so that the reading on diaphragm scale 5 is the same as that on scale 8 of the focusing knob 6 or, by a coupling between the focusing means and the diaphragm adjusting means. Preferably, a cam 22 on the focusing knob shaft 21 co-operates with a lever 25 pivoted at 24 and passing through a slot in the diaphragm actuating lever 35. The tip 31 of lever 25 and the position of index 9 may be adjusted according to the film sensitivity. Specification 523,129 is referred to.
Patent GB-844404-A (GB)
Title: Improvements relating to electrical pulse generating apparatus
Inventor: SCOLES GRAHAM JOHN
IPC: H03K3/55
Filed: 1957-07-19
Abstract: 844,404. Pulse-generating circuits. METROPOLITAN-VICKERS ELECTRICAL CO. Ltd. July 24, 1958 [July 19, 1957], No. 22965/57. Class 40(6). A pulse generator comprises a pulse forming network charged via a rectifier from an alternating voltage source in series with a direct voltage source of the order of the peak value of the alternating voltage and means for discharging the PFN into a load when the alternating voltage is in the neighbourhood of its maximum value opposing the direct voltage. As shown, an A.C. source is fed via a transformer T in series with a D.C. source via a grid controlled rectifier R to charge a pulse forming network PFN. The direct voltage is equal to the peak value of the alternating voltage or, as shown in Fig. 3, the alternating voltage may be somewhat greater. The rectifier R holds the charge on the PFN when a positive peak is reached as shown at H. The PFN is discharged through the load L by triggering a thyratron or ignitron, represented by S at time t. Continuous ionisation or "firing through" of the switching tube S is prevented by arranging that triggering time t occurs when the voltage across the rectifier R is zero or, as shown, reversed. The triggering is derived from the A.C. supply via a control circuit C. The PFN may alternatively be discharged at a submultiple of the supply frequency. As an added precaution a gating circuit D is provided to prevent the rectifier R conducting when the switching tube S is being triggered. In Fig. 1, (not shown), the gate D is omitted and a two-electrode rectifier is employed. Negative charging may alternatively be used. The A.C. and D.C. supplies may have separate or common voltage stabilization. The D.C. may be obtained from a stabilized A.C. supply or from one or more rotary or other generators in series having excitations provided by grid controlled rectifiers or transductors.
Patent GB-339251-A (GB)
Title: Improvements in or relating to catalysing devices, particularly for internal combustion engines
IPC: F02M27/02
Filed: 1929-07-26
Abstract: 339,251. Balachowsky, D., Caire, P., and Levy, M. July 26. 1929. Vaporizers, external.-A vaporizing-device for effecting a catalytic decomposition or cracking of liquid fuel, particularly for use on motor vehicles, comprises a vaporizing chamber 5, Figs. 1 and 2, constructed of a material which will produce the required reaction. The rear wall of the chamber 5 is provided with fins 20 which project into a passage through which the exhaust gases, or a proportion thereof, are conducted. A rich mixture, with or without the addition of exhaust gas, is produced in the lower portion of the chamber 5 and is drawn up by the engine suction through a number of sinuous passages, the catalyzed mixture passing through a Venturi 6 to a mixing chamber to which secondary air is admitted by a control valve 9, the combustible mixture passing to the engine through a manifold 16. A suction-actuated valve 7 automatically admits additional air to the mixing chamber. The exhaust gases entering at 17 may be bye-passed through a conduit controlled by a throttle 13 to vary the heating of the catalyzing chamber 5. A mixture-controlling throttle 11 is connected to the throttle 13 to provide simultaneous control. Catalysis is stated to take place on both sides of the heated, partition wall, the effect, on the exhaust gases being to render them innocuous. Fig. 6 shows a modified form of catalyzing chamber in which a rich mixture is sprayed by the engine suction or a pump on to the lower portion of a corrugated partition wall. Sinuous passages 22 are formed in the upper portion by projecting ribs which are heated by conduction only. In each construction the front wall of the catalyzing chamber is formed by a detachable heat-insulated lid 14. In place of the mixing chamber arrangement shown in Fig. 1, a series of convergentdivergent atomizers 24, 25. 26, Fig. 7, may be employed, the catalyzed rich mixture. issuing from perforations in the throats of the Venturi passage to mix with the secondary air drawn through the concentric annular spaces 28 29 and a central orifice 27.
Patent GB-441888-A (GB)
Title: Improvements in electric lighting devices
IPC: F21S13/00
Filed: 1934-08-09
Abstract: 441,888. Discharge lamps. GREETHAM, E., 29, Hillside Court, Finchley Road, London. Aug. 9, 1934, No. 22995. [Class 39 (i)] [See also Group XI] An electric, gaseous or vapour arc discharge lamp has two envelopes transparent to ultra-violet radiations and a surrounding transparent or translucent element containing or coated with fluorescent material. In the form shown in Fig. 1, the lamp comprises a discharge device 1, the double walls 4, 5 of which are made of quartz, a hood 2, and a fluorescent screen 3. The space between the walls 4, 5 may be evacuated or sealed to prevent the circulation of air. If the screen 3 is coated on its inner surface with the fluorescent material it is not transparent to ultra-violet radiations, particularly those of short-wave length, but if it contains the fluorescent material it is transparent to ultra-violet radiations and is preferably surrounded by a further screen which is not transparent to ultra-violet radiations, particularly those of short wave-length. The screen 3 may comprise a two-ply structure, the inner ply being transparent to ultra-violet radiations and containing the fluorescent material and the outer ply of opal or translucent glass. Alternatively, the outer wall 5 may contain or be coated with the fluorescent material, and the screen 3 made of plain or opal, ribbed or prismatic glass, preferably not transparent to short-wave ultra-violet radiations. In the form shown in Fig. 2, the diffusing element 3 is made prismatic and the discharge device 1 is surrounded by a separate fluorescent screen 6 which seats against a packing ring 7 on the hood 2 so as to prevent the circulation of air. Alternatively, the screen 6 may be sealed to the discharge device 1 and the space therebetween evacuated.
Patent GB-758493-A (GB)
Title: Grease compositions
Filed: 1954-08-09
Abstract: A grease composition, suitable for lubrication under humid atmospheric conditions, comprises a major proportion of a water-immiscible lubricating oil thickened to grease consistency with a mixture of a substantially water-insoluble soap and a water water-soluble soap, the latter soap constituting not more than 25 per cent by weight of the soap mixture, and a minor proportion of a water-soluble corrosion inhibitor of a specified type.  The lubricating oil may be a mineral oil, a synthetic hydrocarbon oil, an oxygenated oil or mixtures of hydrocarbon oil and oxygenated oil. Examples of oxygenated oils are polyalkylene glycols and their partial or complete ethers and esters, polyalkyl silicone polymers, and esters such as 2-ethylhexyl sebacate, dioctyl phthalate and triethylhexyl phosphate.  Fatty oils such as lard oil or castor oil may be added to the lubricating oil. The substantially water-insoluble soap may be an alkaline earth metal, zinc, lead, cobalt, aluminium or other polyvalent metal or lithium soap of fatty acids, resin acids or naphthenic acids, while the water-soluble soap may be a sodium, potassium, amine or alkanolamine soap of such acids. The water-soluble corrosion inhibitors used are alkali metal, amine, or quaternary ammonium nitrites, chromates, molybdates, tungstates, rodates, phosphates, borates, salicylates, citrates, oxalates, tartrates, phthalates, acetates, benzoates, sulphites, tannates or lactates.  In addition to the ordinary alkali metal chromates, the dichromates may be employed as well.  Moreover, the borates may be the meta-or tetra-borate and the phosphates may comprise ortho-, meta-, pyro- and poly-phosphates.  The grease composition may also contain metal-containing detergents such as metal salts of sulphonic acids, phenol-aldehyde condensation products, naphthenic acids, cyclo-aliphatic carboxylic acids or rosin acids, particularly lead naphthenate or sodium or calcium petroleum-sulphonate.  In the examples, grease compositions are described consisting of mineral lubricating oil and (a) sodium and lithium (or calcium) soaps of hydrogenated castor oil and sodium nitrite, (b) barium 12-hydroxy stearate, sodium stearate and dicylclohexyl ammonium nitrite, (c) aluminium stearate, sodium 12-hydroxy stearate and sodium chromate or (d) sodium and lead stearates and potassium iodate.  Methods of preparing the grease compositions are described.
Patent GB-716721-A (GB)
Title: Improvements in electrical measuring instruments
Inventor: BAXTER PHILIP
IPC: G01R11/36
Filed: 1951-10-03
Abstract: 716,721. Supply meters. METROPOLITANVICKERS ELECTRICAL CO., Ltd. Oct. 2, 1952, [Oct. 3, 1951.] No. 23079/51. Class 37. An induction type electricity meter has a disc or rotor provided with a series of anti-creep holes of such number and size as to provide a braking torque of the magnitude required to prevent excess running of the disc at above normal (e.g. +10 per cent) system voltages.
Patent GB-996749-A (GB)
Title: Protective coatings for steel and other metal
Inventor: SALT FREDERICK WILLIAM
IPC: C23C8/06
Filed: 1962-06-15
Abstract: A method of forming a corrosion-resistant coating on a metal such as steel, Cu, Ni or Cr comprises contacting the metal at elevated temperature with one or more compounds which react with the metal to form an adherent coating of either (1) a chelate compound of the metal, or (2) an organo-metallic compound including a carbon-metal chemical bond, the temperature being above the melting point of the reacting compounds which may be in the liquid or vapour state but below the volatilization or decomposition temperature of the reaction product.  Examples of (1) are iron ethylenediamine bis-acetylacetonate and iron 1:2:4 trihydroxyanthraquinonate, and examples of (2) are bis-cyclopentadienyl iron, enneacarbonyl iron disulphide, cyclooctatetraene hexacarbonyl iron, tricarbonyl phenyl mercaptide of iron and the reaction product of Fe and phthalimide. The enneacarbonyl iron disulphide is formed by the reaction of CO and H2S with steel.  In an example, steel is exposed to an atmosphere of phthalimide vapour at a pressure of 1.25-2 atmospheres and temperature of 300-500  DEG C.  The cut edges of steel sheet coated with Al may be protected in this way. Instead of forming the coating on a steel surface itself the latter may be provided with a thin layer of a metal such as Cu, Ni and Cr, e.g. by electroplating, and the coating of the second metal subjected to the action of the vaporized or molten organic compound.
Patent GB-1083832-A (GB)
Title: High green-strength foundry mix and method of using same
IPC: B22C1/16
Filed: 1965-05-31
Abstract: A refractory mix comprises sand, a polymerizable organic binder, a polymerization catalyst, and either kaolinite or attapulgite, the binder being in an amount 1.5-5.0 parts by weight and the kaolinite or attapulgite clay 10-100 parts per 100 parts by weight of sand. The polymerizable organic binder may be derived from furfural or furfuryl alcohol or from urea and/or a phenol and formaldehyde. In examples the polymerization catalyst is aqueous phosphoric acid.
Patent GB-1012934-A (GB)
Title: Improvements in and relating to a flexible belt drive
Inventor: CHALK RONALD THOMAS HENRY
IPC: F16H7/02
Filed: 1963-06-11
Abstract: 1,012,934. Belt gearing. NORTH BRITISH RUBBER CO. Ltd. March 20, 1964 [June 11, 1963], No. 23170/63. Heading F2Q. In an internally toothed belt drive, a tensioner comprises a metal blade or leaf-spring 10 of arcuate formation having a surface engaging the slack side of the belt 13 coated with polytetrafluoroethylene, graphite or molybdenum disulphide. One end of the blade is formed as a closed loop 11 which is mounted on an adjustable pivot pin 16. The other end of the blade engages a fixed abutment block 19.