baber/WOPTO huggingface dataset:
Patent GB-1080253-A (GB)
Title: Method of production of active beryllium oxide powders
IPC: C01F3/00
Filed: 1964-12-23
Abstract: Beryllium oxide powder is prepared by dissolving beryllium sulphate, carbonate, acetate, nitrate, chloride, oxalate or hydroxide in an aqueous solution containing sulphuric acid, nitric acid, hydrochloric acid or ammonium hydroxide to give a beryllium salt solution, adjusting the pH of the solution to between 1.5 and 5.0, evaporating the aqueous solution so as to produce a viscous beryllium complex and thermally decomposing the complex at a temperature of from 300 DEG to 1200 DEG  C.  An addition agent, i.e. oxalic acid, urea, ammonium chloride, sulphate, carbonate, nitrate, acetate or oxalate may be added to the viscous beryllium complex and the mixture then decomposed at a temperature of from 300 DEG  to 1200 DEG  C. Alternatively, beryllium sulphate, carbonate, acetate, nitrate, chloride, oxalate or hydroxide is added to the viscous beryllium complex and the mixture then decomposed at a temperature of from 300 DEG  to 1200 DEG  C. or the original beryllium salt solution may be first concentrated by heating and oxalic acid added prior to evaporating the solution to give the viscous beryllium complex.
Patent GB-1213244-A (GB)
Title: Photographic cameras
Inventor: HENNIG WALTER
IPC: G03B7/16
Filed: 1968-11-05
Abstract: 1,213,244. Photographic cameras. PENTACON DRESDEN KAMERA-UNDKINOWERKE VEB. Nov.5, 1968, No.52394/68. Heading G2A. [Also in Division G1] A photographic camera having a photo-cell 4 receiving light through the camera lens is provided with a built in photometer 2 and with a quantitative light meter 3, which may or may not be in the camera housing 1, there being a changeover switch 5 for alternatively connecting the photometer or the meter 3 to the photo-cell 4, as desired. As illustrated, the light meter 3 is built in, and is connected through a thyratron 6 with connecting contacts 7 on the camera housing, into which contacts a flash apparatus 13 is plugged. A switch 20 is operated by the camera shutter mechanism to ignite the flash-bulbs 12 in the apparatus 13. When a condenser 19 of the meter 3 has been sufficiently charged, the thyratron 6 is ignited to act as a switching element thereby cutting off the operating voltage to the bulb 12. In another embodiment Fig. 2 (not shown), the light meter (3) is mounted in an adaptor (15) which is connected to the changeover switch (5) by plug contacts (16) and conductors (17). The thyratron (6) is connected to the flash apparatus (13) by conductors (9) which plug into the adaptor, and the flash-bulb is controlled as described above. In a third embodiment Fig. 3 (not shown), the light meter (3) is mounted in the flash apparatus (13), which apparatus is connected to the switch (5) by the plug contacts (16) and is controlled as described above.
Patent GB-1504639-A (GB)
Title: Mobile underwater device for excavating materials on the sea bed
IPC: E02F9/02
Filed: 1976-01-19
Abstract: 1504639 Dredges O & K ORENSTEIN & KOPPEL AG WERK LUBECK 19 Jan 1976 [5 Feb 1975] 52476/75 Heading E1F [Also in Division B7] A mobile underwater excavator comprises a cutting tool 6, an inclined conveyor trough 4 for receiving material excavated by the cutting tool, and an endless scraper chain 7 cooperable with the conveyor trough for transporting the material to a discharge location. In the embodiment shown in Figs. 1 and 3, six conveyor troughs are provided in a side-by-side arrangement and each conveyor trough is pivotally movable about a horizontal axis 5 by rams 3. In another embodiment (Fig. 5 not shown) the horizontal pivot axis is disposed above the cutting tool by a cantilever arm so that the vertical position of the cutting tool adapts itself automatically as a function of the firmness of the sea bottom. A transverse conveyor 11 is arranged below the discharge end of the conveyor troughs to pass the material to an elevator 12 having a rotating cover belt 13. The material then passes to a sorting screen 15 having juxtaposed water spraying nozzles after which the graded material passes into a hopper 17. An initial grading of the material may be effected by making the base of each conveyor trough in the form of a sieve. The excavator is advanced by pairs of oppositely rotating vertically adjustable worms 18a, 18b, 19a, 19b. A display or control device may be included to provide a warning signal or to control the operation of the excavator when the discharge end of the conveyor troughs pivots upwardly beyond a predetermined, adjustable threshold angle.
Patent GB-1176509-A (GB)
Title: An Improved Engine Square Piston
Inventor: HARRIES LESLIE DESMOND
IPC: F02F3/28
Filed: 1967-11-18
Abstract: 1,176,509. Pistons. L. D. HARRIES. 4 March, 1968 [18 Nov., 1967], No. 52547/67. Heading F2T. A square cross-section piston, particularly for internal combustion engines, comprises a body 1, a head 2 detachably secured by screws 6 to the body, and sealing bars 3, 4 urged outwardly by an internal circular spring 5. The bars 3, 4, which are chamfered at 45 degrees at their ends, are housed in slots in the piston walls and have central portions extending through apertures in the walls to fit corrugations in the spring 5. The bars are of stainless steel.
Patent GB-1122850-A (GB)
Title: Detection of defects in the fuel assemblies of nuclear reactors
IPC: G21C17/04
Filed: 1965-12-15
Abstract: 1,122,850. Monitoring reactors. ALLMANNA SVENSKA ELEKTRISKA A.B. 15 Dec., 1965 [16 Dec., 1964], No. 53171/65. Heading G6C. A defect in a fuel assembly (not shown) situated at the lower end of a tube 1 within a reactor is detected by monitoring the coolant flowing over the assembly, this coolant passing through ducts 11 in a shield plug 2 attached to the upper end of the assembly. A sample of this coolant passes through openings 4 into a chamber 5 formed at the lower end of a tube 3 forming part of a fuel element handling machine situated within the reactor. The sample is led to a monitoring system outside the reactor by means of a flexible conduit 6 carried by the handling machine. In operation, the tube 3 is simply connected to the tube 1 of the selected fuel assembly, the tube 3 being sealed by a plug 7 supported by the grab 8 of the handling machine.
Patent GB-1441229-A (GB)
Title: Humidifier for inhalation therapy
IPC: F24F6/12
Filed: 1974-12-09
Abstract: 1441229 Dispersing gases in liquids HUDSON OXYGEN THERAPY SALES CO 9 Dec 1974 [11 Dec 1973] 53200/74 Heading B1C [Also in Division A5] A diffuser comprises a base plate 16, a perforated gas-impermeable membrane 40 secured to the periphery of the base plate and forming a gas chamber 30 between them, and a gas supplying member 32 having an upper end 36 outside the gas chamber and a lower end 34 within it; the member 32 is located in the upper surface 23 of bosses having gas passages (24, Figs. 1, 2 and 6 not shown) between them. The base plate may have an upstanding peripheral wall (14) or be dished. The membrane may consist of a synthetic plastics (e.g. pvc) sheet 46, a layer of foamed or expanded pvc 44, and a fabric covering 42. There may be between 100 and 1000 perforations per square inch, of diameter between 0.001 and 0.002 inch. The diffuser may be used in a humidifier for inhalation gas, see Fig. 9 (not shown).
Patent GB-1186199-A (GB)
Title: Improvements in and relating to Alternating Current Power Networks.
Inventor: JONES KENNETH MEIRIG
IPC: H02H9/02
Filed: 1967-11-22
Abstract: 1,186,199. Connecting A.C. networks. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 11 Feb., 1969 [22 Nov., 1967], No. 53222/67. Heading H2H. An A.C. network includes a series-resonant inductance-capacitance link, the centre point of which is connected by way of a switch to a point external of the link. As shown in Fig. 1, a link 1, comprising an inductance L and a capacitance C, connects two terminals T1, T2 of an A.C. system. The point P is connected to earth by way of a normally open switch S which is automatically closed to disturb the resonance condition if current in the link tends to become excessive. The switch may alternatively be connected to a point Pa in another phase of a polyphase system, and may consist of a pair of anti-parallel controlled rectifiers. In a modification, the link may comprise two inductances with a capacitor between them, when switches are connected at both sides of the capacitor, Fig. 2 (not shown). Also, a shunt, such as a sparkgap, may be connected across the capacitor to protect it from voltage surges, Fig. 3 (not shown).
Patent GB-1305160-A (GB)
IPC: D06M101/16
Filed: 1971-11-17
Abstract: 1305160 Treating acrylonitrile copolymer fibres AMERICAN CYANAMID CO 17 Nov 1971 [29 Dec 1970] 53478/71 Heading B5B [Also in Division C3] A process for preparing lactonized acrylonitrile copolymer fibres comprises treating fibres comprising a copolymer of acrylonitrile and a monomer having an hydroxyl group or a group which acts as a source of an hydroxyl group under the treatment conditions with an aqueous acid solution having an acid concentration of not more than 40 wt. per cent and a pH of not more than 2 under conditions of temperature and time such that the fibres produced contain lactone units having one of the formulµ wherein R = CH 3 - or H-. Suitable comonomers for polymerization with acrylonitrile include those containing an hydroxyl group, e.g. allyl alcohol, vinyl and vinylidene esters and allyl esters. The fibres may be treated in the "aquagel" condition, after coagulation or after the fibres have been knitted or woven into fibre products. The time and temperature of treatment are selected to minimize discoloration and denaturation of the fibres, the preferred temperature of treatment being above the second order transitiontemperature of the copolymer but below 200 C. The fibres may in addition contain monomer units which do not participate in or interfere with the lactonization reaction, e.g. styrene, vinyl halides and allylsulphonic acids or salts, as well as minor amounts of other monomer units which contain groups which are hydrolysed under the treatment conditions to form carboxyl groups which can be utilized to form lactone rings, e.g. acrylates and acrylamides. Examples describe the wet spinning of aqueous NaSCN solutions of copolymers of acrylonitrile and vinyl acetate (Example 1), acrylonitrile, vinyl acetate and methallylsul. phonic acid (Example 4) and acrylonitrile, methyl acrylate, allyl alcohol and methallylsulphonic acid (Example 5) into aqueous thiocyanate solutions maintained at -3 to 0 C. The fibres obtained are then stretched in the coagulation bath, washed and further stretched in boiling water and are dried and heat relaxed either before or after immersion in an acid bath containing H 2 SO 4 , HNO 3 , HClO 4  or p-toluenesulphonic acid. Example 3 relates to the lactonization treatment of a conjugate fibre prepared from a copolymer of acrylonitrile and vinyl acetate in side-by-side relationship with an acrylonitrile/methyl acrylate copolymer.
Patent GB-1162030-A (GB)
Title: Belt Driving Device
IPC: F16H7/02
Filed: 1966-11-30
Abstract: 1,162,030. Belt tensioning devices. PALITEX PROJECT-Co. G.m.b.H. 30 Nov., 1966 [2 Dec., 1965], No. 53605/66. Heading F2Q. A pulley 7 is carried on a slide 3 and is moved automatically in a direction to tension a belt 35 in accordance with the magnitude of the torque transmitted by means comprising a pulley 4 coupled to the pulley 7 by a cylinder 15 and piston 16. The cylinder 15 is pivotally mounted on pulley 4 and a piston rod 17 has a spherical end 18 which engages a recess 19 in the periphery of pulley 7. On clockwise rotation of pulley 4 by a belt 5, fluid is expelled from cylinder 15 and passes through a pipe 26 to a cylinder 28 attached to slide 3 and containing a piston 30 secured to the machine frame. This results in movement of the frame 3 and consequent tensioning of belt 35. In a modification shown in Fig. 3, slide 2 is adjustably fixed by a supporting member 36, and cylinder 28 is also fixed and houses a piston 30 which is connected to a toggle lever system supporting guide pulleys 44. In addition, belt tensioning rollers 45, Fig. 4, may co-operate with guide rollers 46, which may also form the whorls of spinning or twisting spindles. The rollers 45 are mounted on levers 48 which are pivoted at ends 47 and are hinged to piston rods 50 of pistons 51 in cylinders 52 connected to pipe 26. In another modification, a disc 59 is connected to a driven shaft 55 of a motor 56 by a spring 57 and carries a cylinder 15 which is connected to a belt drive pulley 7 rotatably mounted on a boss 58 of the disc 59. Double-acting piston and cylinder arrangements are also described.
Patent GB-1442555-A (GB)
Title: Machine for slitting and winding up material in web form
IPC: B65H19/30
Filed: 1974-12-11
Abstract: 1442555 Winding webs JAGENBERG-WERKE AG 11 Dec 1974 [11 Dec 1973] 53669/74 Heading B8R [Also in Division B4] A machine for slitting and winding up material 1, e.g.: of paper, in web form comprises a plurality of winding spindles 8, 9 located opposite a backing roller 7 and journalled in bearings 10 which are movable outwards on substantially horizontal guides 11 as the diameter of the winding rolls increases, the guides being movable to effect lowering of the finished wound rolls. The guides 11 are mounted on brackets 12 which are pivotally mounted on supports 14; the brackets are adjustably mounted on shafts 15 in order to suit different widths of web. The web 1 is fed over guide rollers 2, 3 and a width stretching roller 4, past cooperating disc cutters 5, 6 and over the backing roller 7, one portion of the slit web then being wound onto the roller 8 and the other slit portion wound onto the roller 9. When either roll reaches the required diameter, the respective bracket 12 is lowered by means of a ram 16 to bring the roll into its lowered position for removal.
Patent GB-1168276-A (GB)
Title: Jack-in-the-Box Toy
Inventor: CHOI WONG CHIK
IPC: A63H13/16
Filed: 1966-12-01
Abstract: 1,168,276. Jack-in-the-box toy. GRAND INDUSTRIAL CO. Ltd. 17 Nov., 1967 [1 Dec.; 1966], No. 53788/6. Heading A6S. A jack-in-the-box toy comprises a container with a hinged lid, a spring-influenced figure which protrudes from the mouth of the container when the lid is opened, and a lever effective to keep the lid closed when the figure is within the container, but permits the lid to be flung open by the figure when opening of the lid is commenced manually. In the example shown a lever 17 is attached to the lid 14 at right-angles to the rim thereof at the hinge 7. When the lid is closed the lever 17 acts on the rim surrounding the figure 19, causing the figure to be depressed into the body of the toy. When the lid is fully closed, the end of the lever 17 presses vertically downwards on the rim thus keeping the figure in its lower position against the action of a spring (not shown) which tends to force it up. When the lid is partially opened, the lever no longer restrains the rim and the figure is thrust upwards by the spring and the lid is simultaneously thrown open by the action of the rim on the lever 17. Guide ribs are preferably formed within the body which may be made of plastics material to restrict movement of the figure unit to the vertical plane. A bellows and squeaker may be incorporated around the spring.
Patent GB-1217755-A (GB)
Title: Otto-cycle engine
Inventor: VENYGR KAREL
IPC: F02B75/02
Filed: 1968-11-14
Abstract: 1,217,755. Combustion chambers; valve gear. USTAV PRO VYZKUM MOTORVYCH VOZIDEL. Nov. 14, 1968 [Nov. 17, 1967], No.54017/68. Heading F1B In an overhead cam-shaft Otto-cycle engine receiving fuel mixture through each inlet passage 12, Fig. 1, in a manner producing swirl within the associated cylinder, the combustion space is formed by a cylindrical cavity 10 within the piston crown and by a portion 11 of a part-spherical cavity 2 formed in the cylinder head 1. Moreover, in a section taken in a central vertical plane containing the spark plug, Fig. 2 (not shown) the cavity 10 decreases in depth across its width towards the spark plug which is arranged adjacent the circumference of the cavity 10. This produces an acceleration of the mixture at the position of the spark plug. The inlet and exhaust valves may be dished as shown. The valves may be sunk into the cylinder head, or they may co-operate with suitable depressions in the piston crown. The engine may comprise two overhead cam-shafts.
Patent GB-1408408-A (GB)
Title: Benzimidazole derivatives
IPC: C07D235/30
Filed: 1971-11-24
Abstract: 1408408 Antihypertensive medicines BEECHAM GROUP Ltd 24 Nov 1972 [24 Nov 1971] 54537/72 Divided out of 1366513 Heading A5B [Also in Division C2] Pharmaceutical compositions having antihypertensive activity comprise, as active ingredient, a 2-benzimidazolylcarbamonitrile of the general formula: wherein R 1  is a hydrogen atom or C 1-7  hydrocarbon group; and R 2 , R 3 , R 4  and R 5 , which may be the same or different and at least two of which must be hydrogen atoms, are each selected from hydrogen and halogen atoms and nitro, trifluoromethyl, C 1-7  alkyl, carboxyl, C 1-7  esterified carboxyl, hydroxyl, C 1-7  etherified hydroxyl, C 2-8  acylated hydroxyl, amino, di- C 1-7  alkylamino, C 2-8  acyl-amino and C 2-8  alkoxycarbonylamino groups, or a salt or solvate thereof, together with a pharmaceutically acceptable carrier and optionally further active ingredients such as known diuretic, tranquillizing and anti-hypertensive agents. They may be administered in the form of tablets, pills, capsules, sachets, granules, powders, chewing gum, suspensions, emulsions, solutions and suppositories.
Patent GB-1269789-A (GB)
Title: Improvements in or relating to television camera and like cathode ray tubes
Inventor: WILD HUBERT BRYAN
IPC: H01J29/44
Filed: 1969-11-07
Abstract: 1,269,789. Image pick-up tubes. ENGLISH ELECTRIC VALVE CO. Ltd. 20 Aug., 1970 [7 Nov., 1969], No. 54562/69. Heading HID. A target of the SEC (secondary-electron conduction) type comprises a conducting layer, a porous SEC layer, and a thin top layer which is substantially less porous. The top layer may be of the same or of a different material from the SEC layer and should have a density relative to the solid state of at least 50% and preferably nearly 100%. In one example a support layer of aluminium oxide 500 Š thick carries an aluminium layer 500 Š thick on which a porous layer of potassium chloride is evaporated to a thickness of 25 microns in an inert gas atmosphere to form a layer of 2% relative density; finally a top layer of potassium chloride is evaporated in vacuo to a thickness of 4000 Š to form a layer of nearly 100% relative density. The top layer may alternatively comprise sodium chloride or magnesium oxide. The target may be used in a tube of the vidicon type, with the output taken from the conductive layer, or of the image orthicon type, with the output taken from a return beam, or of the isocon type, with the output derived from scattered electrons.
Patent GB-1441798-A (GB)
Title: Nozzles for liquid plastics material
IPC: B29C45/46
Filed: 1973-11-27
Abstract: 1441798 Nozzles SAINT-GOBAIN INDUSTRIES 27 Nov 1973 [29 Nov 1972] 54878/ 73 Heading B2F A device for ejecting liquids e.g. plastics through a nozzle 1, comprises a duct 11 to direct liquid to the nozzle, means associated with the duct for interrupting liquid flow therethrough, downstream of which and upstream of the nozzle is located means for varying the pressure in the duct. Means are also provided for synchronising these operations. The means for varying pressure comprises a ram 13 actuable by a double-acting piston 14 and movable by means of compressed air introduced via orifices 15 and 16, in a cylinder 12 communicating with the duct and coaxial with it. The means for interrupting liquid flow comprises a double acting piston 7 actuated by compressed air entering the system via inlets 9 and 10, having a needle 4 on both sides thereof, one end of the needle obturating. the duct at one piston. position the other end obturating at another piston position a branch of a passage 5 which communicates with a return duct 3 leading to a pump. Simultaneously with the ceasing of the plastics supply to the nozzle, the pressures in ducts 15 and 16 are reversed and piston 14 releases ram 13, the return motion resulting in a dapressurisation in duct 11 causing interruption of the injection. The nozzle, having two liquid ejecting orifices 27, can move in its housing 17 along an axis parallel to the direction of liquid flow towards a pane of glass 18. At least one lug 19, two in this embodiment, cooperable with a corresponding slot 20 in the nozzle, limits outward movement of the nozzle under pressure within the duct. Alternatively two needles 4 are provided, one obturating the duct and the other a branch of the duct at specified piston postions. In the embodiment of Fig. 3 (not shown) a washer 31 of resilient material provided between the nozzle and the dust allows the nozzle to be tilted relative to the duct, as shown by dotted lines in Fig. 3. In the embodiment of Figs. 4, 5 (not shown) plastics materials to form a composite band are supplied to the injection nozzle (43) by ducts (44), (45) respectively. Plungers (46), (47) emerge into the ducts and a band cutter (50), governed by a piston (51), is provided at the nozzle (43) outlet. The device of Fig. 1 may be used in a method of applying a plastics material to a solid surface by ejecting the material on to the surface from the device. The device described with reference to Figs. 1-3 may be used in a method of assembling a multiple pane by depositing a layer of plastics sealing material between the edges of glass sheets of the pane. Alternatively a multiple pane may be assembled by depositing plastics material on a surface of one of the sheets by a device as described with reference to Figs. 4, 5.
Patent GB-1394659-A (GB)
Title: Silver halide photographic materials
IPC: G03C1/06
Filed: 1973-11-27
Abstract: 1394659 Photographic silver halide materials FUJI PHOTO FILM CO Ltd 27 Nov 1973 [28 Nov 1972] 55045/73 Heading G2C Photographic silver halide materials, especially lith materials, contain as a hardening combination in the same layer or in different layers (i) glyoxal, (ii) a water-soluble salt of 2:4-dichloro-6-hydroxys-triazine and (iii) a polyhydric alcohol e.g. ethylene glycol, 1:2-propanediol, 2:3-butanediol and 1:2-cyclohexanediol. Other polyhydric alcohols are listed. The water-soluble salt of the triazine compound may be the Na, K, Li, Ca, Ba or Sr salt, or the ammonium or a quaternary ammonium salt.
Patent GB-1434700-A (GB)
Title: Device for profiling grinding wheels
IPC: B24B53/08
Filed: 1974-12-20
Abstract: 1434700 Trueing grinding wheels SPOJENE OCELARNY NARODNI PODNIK 20 Dec 1974 [19 Feb 1974] 55215/74 Heading B3D A device for profiling a grinding wheel 11 comprises a frame 1 for attachment to the head stock of a grinding machine, a slide rest 2 on the frame for a template 3, a first link 4 pivoted to the frame and connected by means of a pivot 12 to a second link 5 provided with clamping centrics 9, 10 an exchangeable holder 6 for a template follower 7 and a profiling tool 8 mounted between the centrics, and an operating handle 10 for controlling movements of the holder. The link 4 is connected by a pivot 13 to the frame 1 and, together with the link 5 permits manipulation of the diamond tool 8 in any direction as the follower is moved over the template. The holder 6 is removable from the centrics for matching the tool with the follower.