baber/WOPTO huggingface dataset:
Patent GB-1243402-A (GB)
Title: 0,2,3,4-tetrahydrotetraoxonaphthalene
Inventor: KRAFT MAXIM YAKOLEVICH
IPC: C07C49/67
Filed: 1968-05-19
Abstract: 1,243,402. 1,2,3,4-Tetrahydrotetraoxonaphthalene. VSESOJUZNY NAUCHNO-ISSLEDOVATELSKY INSTITUT KHIMIKOFARMATSEVTICHESKY INSTITUT IM S. ORDSHONIKIDZE. 19 May, 1968, No. 54548/70. Divided out of 1,243,401. Heading C2C. A process for the preparation of 1,2,3,4-tetrahydro tetraoxonaphthalene dihydrate comprises oxidation of 2,3-hydroxynaphthoquinone with chlorine in acetic acid followed by precipitation of the above product by the addition of a water immiscible organic solvent such as methylene chloride, chloroform or dichloroethane and optional cooling to- 8‹ C.
Patent GB-1173729-A (GB)
Title: Plutonium Separation
IPC: G21C19/48
Filed: 1968-11-18
Abstract: 1,173,729. Plutonium separation. UNITED STATES ATOMIC ENERGY COMMISSION. 18 Nov., 1968 [12 March, 1968], No. 54582/68. Heading G6R. Plutonium hexafluoride is separated from a gaseous mixture with fission product fluorides by cooling the mixture to form a solid and then removing PuF 6  by sublimation. In the processing of spent nuclear fuel, the fuel is oxidized in a fluidized bed, treated with BrF 5  to remove UF 6 , and then with fluorine to volatilize PuF 6  and fission product fluorides. The gas mixture is solidified by cooling to - 78‹ C. and then heated to 0‹ C. in a stream of nitrogen or in vacuum to sublime PuF 6  which is contacted at 350‹ C. with a bed of NaF or Al 2 O 3  where it decomposes to form solid PuF 4 . Before heating to 0‹ C., hexafluorides of Mo and Ru may be removed at - 40‹ to - 60‹ C.
Patent GB-1446786-A (GB)
Title: Road-bed
IPC: E01C3/00
Filed: 1973-11-23
Abstract: 1446786 Road foundations NIPPON OIL CO Ltd 23 Nov 1973 [24 Nov 1972] 54597/73 Heading E1G A road surface layer 10 is laid on a foundation which includes or consists of a layer 4 of elemental sulphur, or of a material whose major component by weight is elemental sulphur. The sulphur may be in grain or flake form and provides heat insulation and good drainage above the water level 5, thereby reducing frost damage. The foundation may also comprise a lower sand layer 3 on rolled ground 2 and upper layers 6 of gravel and crushed stone. The surface layer may comprise asphalt, concrete or unspecified blocks.
Patent GB-1276118-A (GB)
Title: Jarring tool
IPC: E21B31/107
Filed: 1969-11-12
Abstract: 1276118 Boring earth COMPAGNIE FRANCAISE DES PETROLES SA 12 Nov 1969 [20 Dec 1968] 55314/69 Heading E1F A jarring tool comprises a sinker member B slidably mounted on jar member A and having a casing 19 of impact resistant metal such as steel enclosing a metallic body 21 having a specific gravity not less than 14. The sinker member has means 3 to connect it to a lowering line and, on tension in the line being released, falls causing shoulder 12 to abut or jar ferrule 14 on the jar member. The sinker member has projections 24a slidable between spaced blades 17 of the jar member. The sinker member may also include a second casing 8 and body 1.
Patent GB-1220770-A (GB)
Title: Process for the purification of lactic acid
IPC: C12P7/56
Filed: 1969-11-13
Abstract: 1,220,770. Purification of lactic acid. RHONE-POULENC S.A. 13 Nov., 1969 [14 Nov., 1968], No. 55727/69. Heading C2C. [Also in Division C7] Lactic acid, obtained by the fermentation of carbohydrates, is purified by (a) introducing the crude lactic acid, in aqueous solution containing 1-80 weight per cent of lactic acid into a dilution compartment while introducing water or an aqueous solution of an acid into a concentration compartment of an electrodialysis cell; and removing from the concentration compartment an aqueous solution containing purified lactic acid, and (b) extracting the purified lactic acid from the said solution with an organic solvent immiscible in water, e.g. diisopropyl ether saturated with water.
Patent GB-1491250-A (GB)
Title: Elastic surface wave device
IPC: H03H3/08
Filed: 1974-12-30
Abstract: 1491250 Surface wave devices NIHON DEMPA KOGYO CO Ltd 30 Dec 1974 [28 Dec 1973] 56006/74 Heading H3U [Also in Division H1] A lithium niobate plate, for use as a piezoelectric substrate in an elastic surface wave device providing a filter or delay line in VHF/UHF bands, is formed as a Y-cut single crystal rotated about the X-axis by an angle lying in the range 125À6 to 130À1 degrees. Where interdigital electrodes of uniform overlap are formed on the surface of the plate, a cutting angle in this range reduces the ratio of spurious component shear waves to the Rayleigh surface waves to at least 40 dB. An angle of cut of 127À86 degrees suppresses spurious components better than 65 dB, Fig. 4. Suppression may also be achieved with devices having non-uniform electrode overlap using the stated angles of cut.
Patent GB-1332597-A (GB)
Title: Vector generator
IPC: G09G1/12
Filed: 1971-11-24
Abstract: 1332597 Cathode-ray tube displays; waveform generators VECTOR GENERAL Inc 24 Nov 1971 [7 Dec 1970] 56086/71 Headings H3T and H4T Vectors are traced on the screen of a cathoderay display tube (10, Fig. 1) by deflecting the beam in X and Y co-ordinate directions under the control of respective deflection generators 44, 42 producing exponential signals having matched time-constants. The beam spot then follows a straight line since the effect of the exponential terms cancel out. This arrangement is stated to be less complex than prior art methods of producing distortion free vector traces utilizing involved computing circuitry. The simplified circuit of Fig. 3, which relates to either the X or the Y axis deflection, operates in response to an input step function voltage at terminal V 1 (t) corresponding to (X2-X1) or (Y2-Y1), i.e. the lengths of the X or Y components of a vector-to produce an output with a similar expression for the Y co-ordinate, where 1/T 1 , is the time constant of the circuit, determined by the values of R23, R24, and R25 and C5. The specification includes a mathematical analysis of the circuit and shows that, if the time constant T 1  is the same for the vertical and horizontal circuits, the exponential terms cancel out and the beam spot follows a straight line. Fig. 4 shows a more detailed circuit in which the operational amplifier A12 of Fig. 3 is replaced by a pair of operational amplifiers A1, A2 and the various time constant determining resistors of Fig. 3 placed by various other resistors which, under the control of field effect transistors and a control circuit 100 may be switched in and out of the circuit to vary the time constant, an identical circuit being employed in respect of the Y axis deflection. By thus varying the time constants during the vector stroke as indicated by T 1 , T 2  and T 3  in Fig. 5, the time required to reach an "acceptable end point error voltage" (e.p.e.), may be reduced from that which the initially employed time constant T 1  would require.
Patent GB-1326044-A (GB)
Title: Frangible safety fluid coupling
IPC: F16L55/10
Filed: 1970-11-25
Abstract: 1326044 Valves; pipe couplings AEROQUIP AG 25 Nov 1970 [2 Jan 1970] 56127/70 Headings F2G and F2V A valve for use in an aircraft fuel system, and which is adapted to close automatically in the event of a crash to prevent leakage, consists of a pair of valve members 37, 38 kept from seating engagement with the ends of flexible liner 43, against the action of springs 42, by rod 44 having aligned parts 45, 46 connected by shear pin 48. The valve body part 12 has a weakened neck 21 which fractures under excess bonding or shear forces to dislodge rod 44 and allow the valve members to engage the liner to prevent leakage from tank 26 and a hose coupled at 31. Excess compressive forces cause the parts 45, 46 to shear the pin 48, due to inclined abutting faces of parts 45, 46 and the valve members are again released. The liner 43 will prevent leakage if the neck 21 is only partially fractured. In a modification, two parts of the valve body are additionally connected by radial shear pins (115) which fracture under tensile forces on the body to dislodge the retaining rod.
Patent GB-1379415-A (GB)
Title: Keepers for sliding bolts
IPC: E05B15/02
Filed: 1972-12-06
Abstract: 1379415 Bolt keepers E V MORGAN 6 Dec 1972 56352/72 Heading E2A  The keeper of a sliding bolt is made of inner and outer telescoping tubes 1, 2 having bayonet connections a, b for the purpose of removing dirt. Ejection of the inner tube 1 may be facilitated by a spring C.
Patent GB-1193566-A (GB)
Title: Mixing Capsule.
Inventor: KULISCHENKO WALTER
IPC: A61C5/06
Filed: 1968-12-02
Abstract: 1,193,566. Portable containers. PENNSALT CHEMICALS CORP. 2 Dec., 1968 [12 Dec., 1967], No. 56983/68. Heading B8D. A capsule for separately storing two ingredients which are to be mixed prior to dispensing comprises a tube A having an integral partition B which has intersecting weakening lines dividing it into segments. A tubular member C telescopically slides into the tube A to form one chamber, and a cap D closes the other end of the tube A to form a second chamber. The member C has a chamfered end 28 and is pushed inwardly to rupture the partition along the weakening lines when the contents are to be mixed. The outer diameter of the inner end of the member C may be reduced to facilitate accommodation of the segments of the partition between the external surface of the member C and the inner surface of the tube A, the chamfered end 28 sealingly engaging the cap D. The ingredients, which may be silver powder 34 and mercury 38 can then be triturated with the aid of a pestle 36 to form a dental amalgam. The cap D is removed to dispense. As shown, the cap is a tight sliding fit on the tube, alternatively it may threadedly engage the tube. The relief afforded by threading the end of the tube permits expansion of the tube to accommodate the ruptured partition.
Patent GB-1241708-A (GB)
Title: Smelting metal in electric arc furnaces
IPC: F27D11/08
Filed: 1968-12-02
Abstract: 1,241,708. Electric arc furnaces. BADISCHE ANILIN- & SODA-FABRIK A.G. 2 Dec., 1968 [2 Dec., 1967], No. 57027/68. Heading F4B. [Also in Divisions C6-C7 and H3-H5] Argon gas is blown into the steel melt 4 in the base 3 of an electric arc furnace 1, through refractory brick nozzles 7 located below the electrodes 5. The gas causes circulation and degassing of the melt and stabilization of the electric arcs 6. The gas may be used as a carrier for powdered calcium fluoride, sand, limestone, or sodium or barium compounds which cause lengthening of the electric arcs to increase the energy transferred to the melt in the initial process stages, and as a carrier for boric acid to shorten the arc length during the later refining stages. It may also act as a carrier for nucleating or alloying components. Further argon gas is supplied through ring tubes 12 surrounding the door openings 9 to prevent ingress of air.
Patent GB-1358468-A (GB)
Title: Plate turn-over mechanism
IPC: B65G47/24
Filed: 1972-12-11
Abstract: 1358468 Plate turning apparatus MOELLER & NEUMANN GmbH 11 Dec 1972 [16 Dec 1971] 57028/72 Heading B3M A plate turning mechanism, Fig. 1, includes a set of arms 1 pivoted on a shaft 3, and a set of arms 2 pivoted on a shaft 4, the arms being pivotable by respective actuators 9 and 10 to the positions shown in Fig. 5. Each actuator is connected to a swinging arm 13 which is movable by an actuator 16 between a right hand and left hand position. Starting from the position in Fig. 1, and extending the actuators 9 and 10, a plate on the roller table 5 is lifted by the arms 1 and supported by the lugs 1a on the arms. By operating the actuator 16, Fig. 5, the two arms swing past a central vertical plane until the plate is supported by the arms 2. When the arms 1 and 2 are subsequently lowered, the plate is positioned on the roller table 6. The actuators 9 and 10 can be de-activated when the arms are in their horizontal positions, for the weight of the arms holds them against stops 21 and 22.
Patent GB-1328287-A (GB)
Title: Multicolour electrophotographic process
IPC: G03G15/01
Filed: 1970-12-03
Abstract: 1328287 Electro-photography RANK ZEROX Ltd 3 Dec 1970 [8 Dec 1969] 57461/70 Heading G2H In the second and subsequent stages of the superimposed multistage process for the production of a multicolour image on a photo-conductive layer which will hold a charge of one polarity only, using toner which will hold a charge of either polarity, a uniform charge of the opposite polarity is first applied whereafter a uniform charge of the first polarity sufficient to neutralise differential charge on existing toner is applied. A zinc oxide layer may be negatively charged and a selenium layer may be positively charged.
Patent GB-1166040-A (GB)
Title: Liquid Pollution Preventing Devices
IPC: D06F39/08
Filed: 1966-12-22
Abstract: 1,166,040. Domestic water supplies. INDUSTRIE A. ZANUSSI S.p.A. 22 Dec., 1966 [22 Dec., 1965], No. 57474/66. Heading E1X. [Also in Division F2] Pollution of potable water in a main is avoided at a draw off position by a device consisting of a nozzle 2 which directs a jet from the main across an air gap 17 in a chamber 6, into a utilization outlet 5 of larger diameter than that of the jet orifice. A diverging nozzle 14 can be fitted, and the device can draw in detergents or mix hot and cold water through another inlet 15. The chamber has a baffle 8 and a drain 9 and is open to atmosphere at 18, the interior being designed to avoid air turbulence.
Patent GB-1285296-A (GB)
Title: Improvements in and relating to pneumatic suction devices for circular knitting machines
Inventor: LINDNER HUGO
IPC: D04B15/92
Filed: 1970-12-04
Abstract: 1285296 Knitting-machines STRUMPFKOMBINAT ESDA VEB 4 Dec 1970 57630/ 70 Heading D1C A pneumatic take-down for a circular machine comprises a rotatable tubular basket 7, mounted in the lower widened portion 1 of a stationary tube 2, and having a perforated funnel portion 9. The portion 9 is adjacent a suction opening 3, and the area of the perforations 9' corresponds to the cross section of the opening. The clearances between the basket and the inner and upper walls of the portion are also similar to the cross-section. Initially suction through the opening tensions the fabric as it depends into the tube 2 and until it enters the funnel portion. Suction through the perforations retains the end of the fabric in the funnel, whose rotation prevents twisting of the fabric but air flow past the top of the basket ensures continued fabric tension, when the article has ben completed it is withdrawn, through the bottom of the basket, by suction through the axial opening 4.
Patent GB-1236580-A (GB)
Title: Improvements in or relating to electrical resistors
Inventor: WORSTER NORMAN GEORGE
IPC: H01C17/23
Filed: 1967-12-20
Abstract: 1,236,580. Resistors. SANGAMO WESTON Ltd. 10 Dec., 1968 [20 Dec., 1967], No. 57820/67. Heading H1S. A resistor comprises a film-like insulating base carrying a resistive line pattern divided into sections by connections to a conductive deposit which initially shunts each resistive section, part of the deposit being broken to bring a resistive section into circuit between terminal portions of the conductive deposit. In the preferred embodiment shown, successive resistive line sections 22, 23 . . . 32, 33 bear an approximately 2: 1 ratio with each other, the smallest resistance being 22 at e.g. 0À25 ohms and the largest, 33 at 512 ohms. The line pattern and conductive deposit may be a copper/nickel alloy printed on to the base 10 which is of flexible plastics material. The conductors 34, 35 . . . 44 and interconnections such as 45 shunt each resistive section so that the terminals 15a, 15b are short-circuited. A section of the line pattern 11 is connected in series with the terminals by punching holes through appropriate portions 45 and the base portions thereunder. When the desired resistance value is obtained the resistor strip is coiled into a cylinder and secured by ties through the slots 21a. In another embodiment (Fig. 1, not shown) the line pattern is arranged into one group of ten sections, each of 10 ohms and a second group of twenty-two sections, each of 0À5 ohms. A conductive strip running along the edges of the base shunts each section and forms terminals at one end of the resistor. A shortcircuit strap dividing the two groups is retained intact if the desired total resistance is less than 10 ohms.
Patent GB-1420098-A (GB)
Title: Electrical circuitry for gas discharge panels
IPC: H03K17/0422
Filed: 1972-12-18
Abstract: 1420098 Matrix displays and circuits therefor OWENS-ILLINOIS Inc 18 Dec 1972 [22 Dec 1971] 58256/72 Heading G5C [Also in Divisions H2 and H3] A display system comprises a gas discharge panel having crossed conductor arrays insulated from the gas and two square wave generators connected respectively to an array, each generator comprising a pair of series connected transistor amplifiers Q 5 , Q 5 <SP>1</SP>, diode circuits D 1 , D 2 , D 1 <SP>1</SP>, D 2 <SP>1</SP> associated with each amplifier for keeping it out of deep saturation and control means 37, 38 which render the amplifiers alternately conducting and non- conducting. The amplifiers comprise switching and load carrying transistors Q 5 , Q 5 <SP>1</SP> to which high potential V cc  is applied via diodes D 4  which prevent transistors turning on in an inverted mode; bypass diodes D 5  provide a path for currents occurring in the panel when the other generator operates. The control means include NPN transistors Q 1 , Q 2 , Q 1 <SP>1</SP>, Q 2 <SP>1</SP> to which control pulses P U , P U , P D , P D  are applied. Transistors Q 1 , Q 2  via transformer T 1  supply pulses to transistor Q 5  to cause it to saturate. Transistors Q 3 , Q 4  supply a potential via transformer T 2  which tends to turn Q 5  off if it is saturated. Similar transistors control transistor Q 5 <SP>1</SP>. Write and erase pulses are applied by row and column conductor diode-resistor selection matrices in series with the sustain generators.
Patent GB-1453618-A (GB)
Title: Injection moulding apparatus
IPC: B29C43/00
Filed: 1973-12-19
Abstract: 1453618 Injection moulding machines SIEMAG SIEGENER MASCHINENBAU GmbH 19 Dec 1973 [27 Dec 1972 2 June 1973] 58810/73 Heading B5A Injection moulding apparatus, e.g. for making foamed plastics articles comprises a screw conveyer 1, Fig. 1, having a housing 3 with heaters 2, an accumulator 17 with heating elements 18 and a piston 20 and an intermediate treatment means 10 having a housing and an element 9 which define an annular passage 11 the width of which is less than four millimetres. A non-return valve 16 is located between the passage 11 and the accumulator 17 which supplies a nozzle 23 having a closure member with a passage to allow nozzle cleaning by compressed air. The motors 5 and 13 for rotating the screw 6 and the element 9 have speed adjusting means 28 and 29 respectively, connected to timers 31 and 34 in circuit with a limit switch actuated by the piston 20. In another embodiment, Fig. 2, the intermediate annular passage 111 is defined by a housing 105 and a conical element 109 rotated by a motor 130 and axially movable for adjustment of the passage 111. An extension of the element 109 has grooves and protrusions 133, 114 which cause additional mixing. The control circuit includes two controllers which receive desired temperature value input signals and measured valve input signals from thermocouples 137, 138, Fig. 2, and which send output signals to means for controlling the motor 130, and the motor for axially displacing the element 109 and the heating elements 127, 132.
Patent GB-1401778-A (GB)
Title: Method for measuring the surface temperature of a metal object
IPC: G01J5/00
Filed: 1972-12-20
Abstract: 1401778 Radiation pyrometry NIPPON KOKAN K K 20 Dec 1972 [27 Dec 1971] 58832/72 Heading G1A The temperature of a surface is measured at a selected point by a radiation pyrometer the reading of which is corrected for the emissivity of the surface this being determined from the reflectance of the surface which is measured by irradiating a point of the surface having a lower temperature than the selected point by means of a hot-plate, measuring the radiant heat reflected from the surface and comparing this with the radiant output of the hot-plate. As shown, Fig. 1, the temperature of point 8b of surface 1 is measured by a radiation pyrometer 8 the output of which is corrected for surface emissivity by means of a variable gain amplifier or potentiometric device 9 and the result applied to a recorder 10. The emissivity of the surface is determined by measurement at a point 1a having a temperature lower than that of point 8b, e.g. ambient temperature. A thermostatically controlled electrically heated hot-plate 2 having an emissivity close to unity is arranged to subtend a solid angle of between # and 2 # at the point 1a and the reflected radiation is detected by a radiation pyrometer 6. The radiant output of the hot-plate 2 is first directly measured by pyrometer 6 and the signal value is stored. The radiation reflected from the surface 1 is then measured and compared with the stored value to determine the reflectance of the surface. The emissivity is then determined using the assumption that the sum of the emissivity and the reflectance is unity. The pyrometer 6 may be mounted so that it views the point through an aperture (2a) in the hot-plate (Fig.2). The use of a PbS detector is mentioned.
Patent GB-1438499-A (GB)
Title: Method for the treatment of flue gases in chimneys
IPC: F23J15/06
Filed: 1972-12-21
Abstract: 1438499 Cooling flue gases in chimneys; boiler chimneys F E BEAUMONT Ltd 19 Dec 1973 [21 Dec 1972] 58998/72 Headings F4S and F4J In a method of removing potentially corrosive constituents from boiler flue gas, the gas is directed upwardly through a chimney 19 comprising a passage 26 in which the gas is cooled by a heat exchanger surrounding the passage, condensate being drained from the passage, e.g. through an outlet duct 28. The heat exchanger may for example comprise a waterjacket 18 and in use, the water may be circulated by a pump 33 through a cooling radiator 34 of arcuate form (see Fig. 5) before being returned to the jacket. Cooling water pipes 36 may extend across the gas passage from the jacket. The gas inlet 24 to the chimney passage is relatively small so that the entering gas is initially cooled somewhat by expansion. The inlet 24 may form part of a cyclone separator 22 for removing solid matter from the gas (entering the separator at 20) via an outlet 23. The chimney passage 26 may contain a conical or disc-shaped baffle 29. A conical deflector (14, Figs. 1 and 2b) having drainage means (15) therein, may be fitted at the upper end of the chimney to prevent the entry of rainwater whilst the chimney is under test. Holes (16, Figs. 2a, 2b) may be provided in the chimney wall to receive temperature probes, also for test purposes.
Patent GB-1146230-A (GB)
Title: Apparatus for causing a rod of crystalline material to grow
IPC: C30B13/20
Filed: 1967-12-29
Abstract: 1,146,230. Zone-melting. SIEMENS A.G. 29 Dec., 1967 [30 Dec., 1966], No. 59230/67. Heading BIS. A rod is grown from a molten zone fed by at least two side-by-side supply rods and heated by induction, the degree of heating being more intense between the axes of the supply rods than outside them and the grown rod being concave at the solid/liquid interface. A molten zone may initially be formed between one supply rod and a thin seed, bridging to the second supply rod being effected as growing proceeds by lateral shifting of the seed. Use of a thick seed obviates need for the lateral shifting. The heating means may comprise two outwardly curving hairpin-like members 7 and 8 between the supply rods, the members being in series (Fig. 3), in parallel, or separate with a pancake coil in between. Alternatively, the heating means may comprise three loops 11, 12 and 13 in series (Fig. 4a) and b; or three separate coils. The rod may be grown downwards (as shown) or upwards.