baber/WOPTO huggingface dataset:
Patent GB-318232-A (GB)
Abstract: 318,232. Mond, A. L., (Metallges. Akt.- Ges., and Hochofenwerk L³beck Akt.-Ges.). June 26, 1929. [A Specification was laid open to inspection under Sect. 91 of the Acts, Sept. 2, 1929]. Copper and zinc chlorides and salts thereof in general. - In the fractional leaching of cooled roasted materials containing copper and zinc, for instance chlorinated roasted pyrites, the material is so far cooled that the temperature of the first fraction of the extract measured, at the outflow is below 75‹ C. and preferably about 50‹ C., whereby the first fraction contains the bulk of the zinc, and the second the bulk of the copper. Cooling of the material may be effected on air-cooled conveyer belts or by means of water-cooled tubes; or the material be first sprayed with liquid in known manner and cooling be completed in the absence of liquid. The water or extract liquor used for leaching may also be cooled. In an example the first fraction contained 90 per cent of the zinc and only 15 per cent of the copper. The Specification as open to inspection under Sect. 91 (3) (a) states that the first fraction of the extract may have a temperature up to 85‹ C. This statement does not appear in the Specification as accepted.
Patent GB-1221545-A (GB)
Title: A method of and apparatus for protecting and purging metal melts in continuous casting plant
IPC: B22D11/106
Filed: 1968-07-04
Abstract: 1,221,545. Continuous casting. BADISCHE ANILIN- & SODA-FABRIK A.G. 4 July, 1968 [6 July, 1967], No. 31866/68. Heading B3F. [Also in Divisions C7 and F4] Inert gas (such as argon) passes from a pipe 19 through permeable bricks 17 on the bottom 16 of a tundish 6 to remove gas from molten metal 21 and to holes in a pipe 12 to blanket the metal stream passing through a sealed shroud 9 and bellows to a mould 11. Some of the gas from the pipe 12 is directed on to the metal stream and some towards the shroud 9. Argon is also passed to a shroud around the stream which passes into the tundish 6 from a ladle above it. The tundish and mould are purged with argon before casting.
Patent GB-1023356-A (GB)
Title: Two-speed transmission hub
IPC: B62M25/00
Filed: 1963-08-13
Abstract: 1,023,356. Change-speed gear. FICHTEL & SACHS A.G. Aug. 13, 1963 [Aug. 18, 1962], No. 31935/63. Heading F2D. Direct drive in a two-speed planetary hub for bicycles is obtained from an input sprocket 3 connected through a planet carrier 2 and a ratchet clutch 5, 6 to a driven hub 7, increasing speed of rotation driving through a non- planetary step-up ratio reverse gear train 19, 21, 23 to centrifugal weights 25 which fly radially outwards into engagement with a sleeve 16 to turn it backwards against a light friction engagement with the hub, a screw connection 15 between the sleeve and a ring 13 sliding the latter axially so that its coned inner face 18 releases the pawls 12 of a second ratchet clutch for engagement with teeth 28 in the hub 7. A step-up drive from the input sprocket 3 and the carrier 2 is then obtained, planets 4 on the carrier meshing a fixed sun gear 10 and a ring gear 11 driving through the ratchet clutch 12, 28 to the hub 7, while the ratchet clutch 5, 6 over-rung. The sleeve 16 is provided with a friction spring 17 sliding over the inner face of the hub 7, and the ring 13 is restrained against rotation by its slotted engagement with a friction spring 14 on a fixed axle 1. The step-up ratio train comprises a ring gear 19 in the hub 7 meshing idle pinions 21 in turn meshing an inner gear 23 connected to a carrier 24 on which are pivoted the centrifugal masses 25, biased radially inwards by springs 27. The centrifugal weights 25 engage positively in slots 26 in the sleeve 16. In a modified form, the carrier 24, Fig. 3 (not shown), of the centrifugal weights is made of a synthetic plastics material, and the centrifugal weights 25 slide radially outwards, along arms on the carrier, to engage frictionally with the hub 7.
Patent GB-263618-A (GB)
Title: Improvements in apparatus for filtering beer
IPC: B01D37/00
Filed: 1925-12-18
Abstract: 263,618. Worssam & Son, Ltd., G. J., and Fox, D. P. S. Dec. 18, 1925. Block filters.-A beer filter A is provided with a jacket E through which brine or other cooling liquid is passed from an inlet F to an outlet G. The filter cells H are of slightly less diameter than the chambers so that there is a thin sheet of liquid flowing along the inner wall. The liquid is supplied through an inlet C and filtered liquid is discharged through a central outlet at the bottom.
Patent GB-1114331-A (GB)
Title: X-ray film pack
IPC: G03B21/18
Filed: 1966-07-18
Abstract: 1,114,331. X-ray film pack. EASTMAN KODAK CO. 18 July, 1966 [19 July, 1965], No. 32110/66. Heading H5B. An X-ray film pack comprises a sheet of material for photographically recording X- radiation, at least one X-ray intensifying screen adjacent the sheet both or all being enclosed in a sealed flexible envelope which is filled with gas, said envelope being transparent to X-radiation but substantially opaque to other radiation to which the sheet may be sensitive, substantially impervious to ambient gases, and also containing a rupturable container holding an absorbent for the gas. Figs. 2 and 3 show an envelope 12, containing film 14 and screens 16 and 21 together with the absorbent 25 e.g. Li, Ba, or Ca(OH) 2  in frangible tube 18, the envelope being filled with a suitable gas e.g. CO 2 . Breaking the tube as shown in Fig. 3 causes the gas to be absorbed and the film and screens to be pressed into a desirably close contact. The enclosure may be formed from synthetic plastics sheet material or paper coated or laminated with a polyolefin. The intensifying screens comprise lead foil or phosphor, e.g. BaPb(SO 4 ) 2 , CaWO 4 , or Pb powder coated supports, the phosphor being dispersed in a suitable binder.
Patent GB-1384926-A (GB)
Title: Arc welding method and apparatus therefor
IPC: B23K9/09
Filed: 1972-07-10
Abstract: 1384926 Welding by fusion KOBE STEEL Ltd 10 July 1972 32117/72 Heading B3R In fillet or V-groove butt, horizontal or vertical position, consumable electrode arc seam welding, wherein a torch, and hence the electrode tip, is oscillated transversely of the seam, welding current, and hence arc form is changed in dependence on the position of the torch in its oscillation path.  As shown in vertical position V-groove butt welding together workpiece members 21, 21<SP>1</SP>, a torch 22 pivoted at 23 is oscillated by an electric motor driven crank disc 27 via a connecting rod 26. The disc 27 carries a permanent magnet 28 which, when the electrode tip approaches either of the workpiece members, actuates a corresponding reed switch 29 or 29<SP>1</SP> to change over, via a relay 31, electrode current feed from a low current supply Sh, providing a short circuit arc between the oscillating path ends, to a high current supply Sp, providing a spray transfer arc at the oscillation path ends. The apparatus may include more than two reed switches to introduce more than two current sources. In Figs. 5, 6 (not shown), in an apparatus also for vertical position V-groove butt welding, a pulse generator controls simultaneously a torch oscillation, synchronous or pulse, timing motor (in respect of both rotational direction and angle of said motor), a torch travel mechanism timing motor, and, through counters, welding current selection. In operation, the electrode receives spray transfer arc current at the oscillation path ends, no current at the center of the path, and short circuit arc current for the intermediate parts of the path. In a method of horizontal position fillet welding, high current is supplied at the horizontal plate end of the oscillation path, low current being supplied for the remainder of the path. In a further method of vertical position V- groove welding, spray transfer current is supplied at each end of the oscillation path, short circuit current is supplied at the path centre, the current is cut in the intermediate parts of the path.  In a further method of welding, high and low currents are supplied at the oscillation path centre and at other times respectively.  The use of A+CO 2  shielding gas is referred to The current sources used may be constant potential D.C. or pulsed current.
Patent GB-1073238-A (GB)
Title: Photographic silver halide emulsions and sensitive materials prepared therefrom
Inventor: ALLENRTOFF NORMAN
IPC: G03C1/043
Filed: 1964-08-07
Abstract: 1,073,238. Silver halide emulsions giving images of improved density. EASTMAN KODAK CO. Aug.7, 1964 [Aug. 9, 1963], No.32159/64. Heading G2C. A light-sensitive gelatino-silver halide emulsion of which the silver halide comprises silver bromoiodide containing from 0À5 to 10 mole % of silver iodide and having a means grain size of at least 0À4Á contains a polyacrylamide having an inherent viscosity (#i = 2À3 logic nr/c where nr is the ratio of a viscosity of a solution of the substance to the solvent and c is the concentration in the solvent) in 0À25% w/v aqueous solution at 25‹C. of from 0À1 - 0À6 the weight of the polyacrylamide being from 5-50% of the weight of the gelatine.
Patent GB-324915-A (GB)
Title: Improvements in or relating to means for packing eggs
IPC: B65D85/32
Filed: 1928-11-05
Abstract: 324,915. Lane, S. D. Nov. 5, 1928 Boxes made from special blanks; fittings, internal.-In a box for packing eggs of the kind in which internal supporting means is arranged so as to provide apertures arranged in a row to support the lower ends of the eggs above the bottom and separating means is arranged above the supporting means to space the eggs from each other, the supporting means has the form of an apertured channel of V- section. In one form, a foldable box as shown in Figs. 1 and 2 is provided with supporting means consisting of a blank a.pertured and folded to form a channel 29. The separating means is constituted by the parts 28 of the blank. A further supporting means consisting of a blank 22 apertured at 33 is also provided. Alternative forms are shown in Figs. 7, 10, 14, 17 and 19. The apertures may be of various shapes.
Patent GB-646585-A (GB)
Title: Improvements in or relating to electromagnetic indicating or warning apparatus
Inventor: HUDSON CHARLES STANLEY
IPC: B64D45/00
Filed: 1947-12-06
Abstract: 646,585. Aircraft controls. MINISTER OF SUPPLY. Dec. 6, 1947, No. 32243. [Class 4] [Also in Group XIX] In a multi-winding D.C. energized relay or magnetic amplifier system used for indicating the change in one variable with respect to the mean of several others, the field due to the one variable opposes that of the several others. Four D.C. pick-up devices 21 ... 24 having outputs proportional, e.g. to the torques o powers developed by a four-engined aircraft are connected to four series-connected magnetic amplifiers 31, 41, 51, 61, controlling indicator relays such as 32. Each amplifier has a main winding 33, 44, 55, 66, and three opposing windings such as 34, 35, 36 each having an equal but smaller number of turns. Each amplifier is arranged to operate its relay when a predetermined opposing field is set up, i.e. when the engine associated with its main winding fails. The output from the amplifier may be peaked at the predetermined position when a simple warning, and not continuous indication, is required. Tappings on all the windings and/or variable shunts may be used for adjustment. A bias winding energized from an independent source may be used for checking. Alternatively a multiwinding relay may be used instead of the magnetic amplifier, Fig. 1, not shown.
Patent GB-1421639-A (GB)
Title: Recording materials for the production of deformation images
IPC: G03G16/00
Filed: 1973-07-06
Abstract: 1421639 Thermoplastic electro-photographic element HOECHST A G 6 July 1973 [10 July 1972] 32262/73 Heading G2C A thermoplastic recording material for frost imaging comprises a carrier having a layer of thermoplastic photo-conductive polymer, the polymer comprising at least one non-cross-linked oligomeric condensation product of formaldehyde or paraformaldehyde with at least one multinuclear carbocyclic aromatic compound and containing 6 to 10 units of one of the following Formulae.  wherein X 1  and X 2  are H, halogen, alkoxy (C 1  -4 ) or alkyl (C 1-4 ); X 3 , X 4 , X 5  and X 6  are halogen, alkyl (C 1  -4 ) or alkoxy (C 1-4 ). The condensation product is soluble in tetrahydrofuran at room temperature. The aromatic compound is preferably 3-bromo or chloro pyrene, mono or ditetriary butyl pyrene, isopropyl-pyrene or dichloroperylene. The layer may also include as a binder chlorinated diphenyl, low M.W. polystyrene, a polyester, a hydrocarbon resin, or a glycol ester of hydrogenated colophonium, and as an electron acceptor 2, 4, 7-trinitro-fluorenone or 9- dicyanomethylene-2, 7-dinitro fluorene. Mixtures of condensation products may be used. The carrier may be a polyester film with or without a layer of aluminium or glass coated with tin oxide. The material gives high resolution and may be used with lasers to give holograms. Specification 1404829 is referred to.
Patent GB-432478-A (GB)
Title: Improvements in or relating to methods of treating hydrocarbon oils, and the improved oils resulting therefrom
IPC: C10G21/00
Filed: 1933-11-20
Abstract: <PICT:0432478/III/1> Mineral oils such as lubricating-oils are treated with one or more solvents which remove naphthenic constituents consisting of phenols, xylidine, furfural, pyridine, ethyl chlor-acetate, cellosolve acetate, a -naphthol, ethylene diamine, glycol diacetate or benzonitrile and also with a solvent for the paraffinic constituents, and the resulting paraffinic and naphthenic layers are then separated.  Paraffinic solvents specified are, propane, ethane, butane, pentane, hexane, iso-butane, isopentane, butylene, propylene, ethylene, methyl chloride, di-chlor di-fluor methane, petroleum ether or naphtha, or gasoline. Lubricating oil which may be pretreated with sulphuric acid is fed from a tank 7 to a mixer 4 together with liquefied propane from a tank 1 and an extraction solvent such as cresylic acid, wood tar acid or xylenol from a tank 5.  The mixture passes to a chiller 10 in which the pressure is reduced, whereby the mixture separates into an upper layer of oil containing wax in suspension, and a lower naphthenic layer.  The extraction solvent acts as an antisolvent for the wax.  The propane vapours pass through a pipe 12 to a compressor 23 and condenser 20 to the storage tank 1.  The lower naphthenic layer is drawn off at intervals during the chilling into a stripper 16 in which propane is removed by a heating coil 17.  The extract then passes to a still 26 in which the phenol is removed by a stripping gas, e.g. propane, and is condensed and returns from a receiving tank 29 to storage 5.  The naphthenic oil is drawn off into a tank 26d.  The raffinate layer containing wax at a temperature about 0 to -50 DEG  F., is pumped through a filter press 37 in which wax is removed, washed with propane to remove oil, and is then freed from propane in a stripper 39.  The filtrate passes to a stripper 46 to remove propane and then to a settler 52 in which it is chilled to separate extraction solvent and some naphthenic oil which is withdrawn into a tank 54 and returned to the main extraction process or distilled in a still 55.  The upper layer oil of passes from the settler 52 into a still 55 to remove the extraction solvent.  A stripping gas such as propane may be used. The resulting lubricating oil is then withdrawn through a cooler 69 into storage tank 72, and may be further treated with clay or a small amount of concentrated sulphuric acid.  For the first extraction stage, the oil may be first mixed with propane and then contacted with the extraction solvent or vice versa.  The extraction solvent may be mixed with nitrobenzene, aniline or acetone.  Specification 413,307 is referred to.
Patent GB-937448-A (GB)
Title: Improvements in or relating to ultra-violet radiators and envelopes therefor
IPC: G02B5/20
Filed: 1961-09-08
Abstract: 937,448. Coating quartz glass. PHILIPS ELECTRICAL INDUSTRIES Ltd. Sept. 8, 1961 [Sept. 13, 1960], No. 32331/61. Class 56. A quartz glass envelope of an ultra-violet radiator, capable of passing radiation above 2100‹ A. while absorbing ozone forming radiation below 1900‹ A. is provided with a surface layer approximately 0.01 to 1 micron thick, consisting substantially of SiO 2  and ZnO at a content of from 0.01 to 0.5 mgm. of ZnO per square cm. The ZnO-SiO 2  layer may also contain B 2 O 3 , Ca ions, which do not influence the transmission for a wavelength above 2100‹ A. The envelope is dipped or sprayed by an alcoholic (e.g. methanol) solution of compounds which yield SiO 2  and ZnO on hydrolysis and/or pyrolysis. Such compounds may be selected from zinc chloride, nitrate or acetate, esters of silicic acid, silicon halides, silicones and siloxanes. The radiator is turned on to heat the layer to a temperature of 400-700‹ C. The dipping or spraying process may be repeated several times.
Patent GB-283718-A (GB)
Title: Improvements in and relating to steering road wheel axles
IPC: B60B35/08
Filed: 1926-12-21
Abstract: 283,718. Daimler Co., Ltd., and Compton, F. W. Dec. 21, 1926., Axles.-Two hollow cranked pieces a of the form shown are connected by a, tube h which forms the. centre portion of the axle, or they may be prolonged to meet in the centre line of the vehicle, in which case the joint is surrounded by a tube. The pieces a are formed with facings e for the reception of springs f. The meeting ends of the pieces a may be joined by welding &c. with or without a piece h
Patent GB-409611-A (GB)
Title: Improvements in grinding mills for volatile materials
IPC: B02C4/28
Filed: 1933-11-20
Abstract: 409,611. Roller - and - breast mills. ATELIERS J. HANREZ SOC. ANON., Monceau-sur-Sambre, Belgium. Nov. 20, 1933, No. 32340. Convention date, Nov. 22, 1932. [Class 59.] In a grinding mill having one or more cylinders and grinding and scraping bars arranged in a closed casing, the scraping bar is arranged at the lower part of the grinding cylinder above a collecting device housed in an airtight chamber. As shown the casing c and hopper s enclose the roller a which is vertically adjustable, the bearings being provided with side plates to form an airseal with the pedestal. The grinding bar g is inserted in a recess formed by the junction of the casing c and hopper s and is adjustable externally of the casing. A vertical scraper m is pivoted on a bar o and is pressed against the roller by a spring p. A partition c<2> reduces the air space inside the main casing and is provided with a door q for the insertion of a container. A window r is formed in the casing and the hopper is closed by a cover t. The roller and/or scraper may be reciprocated.
Patent GB-1408063-A (GB)
Title: Silicon-based semiconductor devices
IPC: H01L21/00
Filed: 1973-06-06
Abstract: 1408063 Transistors SIEMENS AG 6 July 1973 [17 July 1972] 32355/73 Addition to 1310449 Heading H1K In manufacture, in order to improve the radiation resistance and stability of a transistor comprising a body of silicon oxide coated silicon, the body is irradiated with electrons of energy less than 150 keV for a sufficient time to give a dosage at the oxide silicon interface of 10<SP>9</SP> to 10<SP>10</SP> rads while maintained between 200‹ and 300‹ C. The body is then subjected to heat treatment at 200-300‹ C. for at least ten hours without further irradiation but with a forward bias of at least 0À3 volt maintained between its emitter and base connections. Typically an NPN planar transistor without, or with an unsealed housing is irradiated in an evacuated chamber on a heated copper plate. The housing may be evacuated or filled with dry protective  gas and sealed either before or immediately after the following heat treatment, during which the collector junction is preferably also forward biased. Alternatively protection of the device is afforded by covering the body with silicone or polyimide resin before sealing the casing, or by merely coating the body with moisture repellent silicone resin. Where several transistor configurations are formed in the same body division into single components and electroding may be effected after irradiation, but if the body is to constitute an integrated circuit electroding is done before irradiation.
Patent GB-452129-A (GB)
Title: Improvements in or relating to the production of cemented articles
IPC: C08L1/18
Filed: 1934-11-09
Abstract: A process for the production of cemented articles, for example, shoes, leather belts, and fabrics, consists in rendering one or both of the cement layers adhesive by applying thereto the vapour of an organic solvent and uniting the surfaces by pressure.  The cement may comprise a cellulose derivative, a soluble organic resin, or rubber, and acetone may be used as the solvent.
Patent GB-175726-A (GB)
Title: Improvements in or applicable to mowing machines, reaping machines and reaping and binding machines
IPC: A01D57/04
Filed: 1920-11-17
Abstract: 175,726. Abell, J. E. A. Nov. 17, 1920. Reaping, mowing, and harvesting machines are provided with raking or combing mechanism for raising fallen crops &c. comprising rakes or combs mounted in rotary carriers and connected by radius-rods to eccentrically-mounted pulleys or the like so that their tines remain parallel to themselves as they are carried round, the arrangement being such that the combs pass through the crop being cut and move towards the cutting-apparatus from in front of it and then upwards away from it. In the form shown, cane or like prongs w are secured in sockets on rods u which are mounted in spiders t and are connected by radiusrods x to an eccentrically-mounted pulley n driven from the wheel k. The pulley n and the cranked rod o carrying the spiders t are mounted on a detachably pivoted frame or lever a which may be adjusted within limits by means of a lever b and locking quadrant e. The angle of the tines is adjusted within limits by moving the cranked rod o by means of a lever p provided with a locking quadrant r. The pulley n is driven by belt gearing from a friction wheel j held in contact with the wheel k by a spring-controlled lever f pivoted on the lever b.