baber/WOPTO huggingface dataset:
Patent GB-1503900-A (GB)
Title: Gas turbine engine
IPC: F02C7/105
Filed: 1975-11-14
Abstract: 1503900 Gas turbine engine with rotary regenerative heat exchanger ROLLS-ROYCE Ltd 14 Nov 1975 [21 Nov 1974] 50407/74 Heading F1G [Also in Division F4] A gas turbine engine comprises a rotary regenerative heat exchanger in the form of a plurality of porous discs mounted for rotation about a common axis, turbine exhaust gases being arranged to flow through the discs in one direction and compressor discharge air being caused to flow through the discs in the opposite direction. In the engine shown, the heat exchanger 15 is disposed downstream of the turbine 14 and air from the compressor 12 is directed through ducts 17 to the heat exchanger, the air after pre-heating passing through ducts 18  to the combustion equipment 13. The exhaust gases from the turbine discharge through ducts 19 to the heat exchanger and discharge therefrom through propulsion nozzle 16. The heat exchanger comprises a series of porous discs 20 spaced apart axially and connected together for rotation being supported in bearings 21, 22 and rotated by means not shown. The discs are of annular form to provide a central opening for exhaust gas discharge. Plates 25 are associated with the discs as shown at the lower part of Fig. 2 so as to provide chambers to which exhaust gases from duct 19 flow in parallel paths, the gases passing through the discs in a downstream direction whereby the disc is heated, the gases being received within the downstream chambers formed by the plates 25 then discharging through the central opening. The compressor discharge air in duct 17 enters chambers 23 disposed adjacent the downstream sides of the discs 20, flows through the discs in an upstream direction being thereby heated and is received in the chambers 24 adjacent the upstream sides of the discs; the pre-heated air then flows through ducts 18 to the combustion equipment.
Patent GB-1402997-A (GB)
Title: Herbicidal composition
IPC: A01N/
Filed: 1971-10-30
Abstract: 1402997 Mixed herbicides FISONS Ltd 19 Oct 1972 [30 Oct 1971 10 Feb 1972] 50565/71 and 6228/72 Heading A5E A herbicidal composition comprises (A) 3,6- dichloro-2-methoxybenzoic acid (dicamba) and/ or salt and'or functional derivative thereof. (B) (4-chloro-2-methylphenoxy) acetic acid (MCPA) and/or salt and/or functional derivative thereof, and (C) 2-(4-chloro-2-methylphenoxy)propionic acid (mecoprop). and/or salt and/or functional derivative thereof, the proportions of ingredients being such that there are from 16 to 24 parts of (B) per part of (A) and from 32 to 48 parts of (C) per part of (A), all by weight and calculated as acid itself. The compositions find application in combatting weeds in cereal crops. Specification 1058314 is referred to.
Patent GB-1508000-A (GB)
Title: Rolls of rolling mills
IPC: F16C13/00
Filed: 1975-12-12
Abstract: 1508000 Bearings SKF INDUSTRIAL TRADING & DEVELOPMENT CO BV 12 Dec 1975 [14 Dec 1974] 51075/75 Heading F2A [Also in Division B3] The neck 1 of a rolling mill roll is journalled in a chock 4 by a multi-row cylindrical roller bearing 2, and by a double-row taper thrust roller bearing 3 located between the end face of the journal and an end housing 11 secured to the chock. The bearing 3 has two axially spaced outer races 12 and 13 supported in the boss part 14 of a cover 16 secured to the end face. An intermediate race 5, on which the rollers of both rows bear, is carried on a central boss 6 mounted on the housing 11. The cover 16 and thrust bearing can be removed as a unit with the housing 11, after releasing the screws 15. Radial fins 29 on the cover promote a cooling flow of air through openings 19 in the housing 11. Ducts 34 and 33 in the cover and boss 6 act as entry ports for the air. Seals 21, 24 and 25 protect the two bearings from dirt.
Patent GB-1275966-A (GB)
Title: Improvements in or relating to railway track
Inventor: JENNINGS BRIAN MICHAEL
IPC: E01B9/30
Filed: 1969-10-17
Abstract: 1275966 Rail fastenings COSTAIN CONCRETE CO Ltd 16 Oct 1970 [17 Oct 1969] 51227/69 Heading E1G To enable shims 16, of total thickness sufficient to raise a rail 1 to a height of about 1¢ inches, to be fitted under the rail, while ensuring a secure fastening of the rail by a known fastening arrangement comprising housings 3, embedded in a concrete tie 2, and spring clips 18 adapted to be slid axially into bores in the housings and to bear on the housings and rail foot 9, the latter being if desired provided with insulators 10, a channelshaped member 12 is positioned under the rail with its base 13 in contact with the tie and its flanges 14 between the rail foot and the housings 3, the shims together with a resilient pad 7 being fitted within the channel-shaped member. Short lengths of rod 15 are welded to the outer walls of the flanges and bear against the housings 3 to enable the flanges 14 to absorb lateral loads from the rail which, as shown, are transmitted through the insulators 10, longitudinal movement of the insulators 10 being prevented by end flanges 11 of the insulators engaging around the ends of the flanges 14. In order to allow fastening to be accomplished securely and with the correct tension over a range of shim thicknesses down to zero, i.e. including the case where the channel-shaped member 12 is omitted, the spring clips 18 are made in a range of sizes, and the insulators 10 are made in two sizes, i.e. that shown and a larger size such that its flanges 11 can embrace the housing 3 as in a conventional fastening of this type (Fig. 1, not shown).
Patent GB-1486929-A (GB)
Title: Analogue-to-digital signal converters
IPC: H03M1/00
Filed: 1974-11-27
Abstract: 1486929 Analogue - to - digital conversion SUWA SEIKOSHA KK 27 Nov 1974 [28 Nov 1973 10 Dec 1973] 51387/74 Heading H3H In a dual ramp analogue-to-digital converter, the time period over which the input analogue V x  is integrated by integrator 1 is determined by a digital number set at 10 and compared by comparator 11 with the state of stages 13-16 of a counter 4 counting clock pulses from a crystal oscillator 5. Upon detection of equality by comparator 11, V x  is disconnected. Counter 4 may be immediately reset and a reference voltage V s  integrated, the time taken for the output of the integrator 1 to drop to a given level, detected at 2, being measured by strobing counter 4 into a memory 12. Alternatively, counter 4 may be allowed to overflow, integration of V s  being delayed till then. Counter 4 has three decade stages 13, 14, 15 and three binary stages 16, 17, 18. The A-to-D converter may be in a time-piece, sharing the crystal oscillator and a liquid crystal display.
Patent GB-1283245-A (GB)
Title: Improvements in control circuits for electric hoist blocks
Inventor: PHIPPS STANLEY JACK
IPC: B66C15/00
Filed: 1969-10-21
Abstract: 1283245 Control of A.C. motors HERBERT MORRIS Ltd 15 Oct 1970 [21 Oct 1969] 51459/69 Heading H2J A hoist block is driven by a motor M associated with a brake B which is applied when its coil is de-energized. During hoisting operation, relays m and D operate to energize the brake and the motor simultaneously over contacts B<SP>1</SP> and c<SP>1</SP>. When the load is to be lowered, relay D is initially energized to release the brake and contacts d close after a time delay to energize relay m<SP>1</SP> and energize the motor over contacts c<SP>2</SP>.
Patent GB-1441024-A (GB)
Title: Recording and reproducing apparatus using flexible recording media
IPC: G11B17/03
Filed: 1973-11-06
Abstract: 1441024 Flexible-disc recording and playback MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 6 Nov 1973 [17 Nov 1972 7 June 1973 15 June 1973 20 June 1973 24 July 1973] 51539/73 Heading G5R A flexible record disc 2 rotates on an air cushion over a stationary stabilizing surface 1<SP>1</SP> formed with a central convex ridge between two concave valleys. At least one inner surface of a cartridge containing a flexible record disc may be formed into such a stabilizing surface, Figs. 12 and 13 (not shown).
Patent GB-1376722-A (GB)
Title: Spraying device for a liquid distributing system for agricultural use
IPC: A01M7/00
Filed: 1971-11-09
Abstract: 1376722 Liquid spraying system ETABS ROFFO 9 Nov 1971 [23 Nov 1970 27 Sept 1971] 51931/71 Heading AID [Also in Division B2] In a spraying device on a distributor liquid is sprayed through either both or possibly neither of nozzles 39, 41 according to the setting of a manually rotatable cam 33 which bears on the heads 24 of vertically slideable valve members 23 to selectively displace them downwardly out of their closed positions against springs 32. The nozzles 39, 41 may spray at different rates and with different distributions. In Fig. 3 one valve member 23 is open and liquid from the corresponding distributing chamber 14 can flow through ports 28 to the nozzle 39 but the other valve member is closed with its ports 28 sealed from the distributing chamber 16 by the engagement of a sealing ring 29 with a frusto-conical seat on a plug 19 and nozzle 41 is not supplied with liquid. Diaphragm valves 40 prevent dripping from nozzles not supplied with liquid.
Patent GB-1224783-A (GB)
Title: Processes for preparing dehydrated potatoes
IPC: A23L19/12
Filed: 1968-11-05
Abstract: 1,224,783. Dehydrated potato pieces. UNCLE BEN'S Inc. 5 Nov., 1968 [9 Nov., 1967], No. 52272/68. Heading A2D. A quick-rehydratable dehydrated potato product is produced by cutting white potatoes into discrete pieces and, under substantially non-drying conditions, cooking so as to gelatinize the starch therewithin, cooling and freezing the pieces, and then maintaining the pieces in a frozen condition and removing moisture therefrom by sublimation such that the total concentration of moisture is not greater than 70% by weight, and finally drying the pieces so as to remove additional moisture therefrom. The cut potatoes are rinsed in a sulphite solution before cooking at a temperature of at least 150F. Cooling may be effected by quenching in cold water which may contain glycine, glucose, alkaline buffers and sulphites. Freezing may be effected by contacting the potato pieces with cold saturated air, by sealing in containers exposed to a cold atmosphere, or by immersion in a cold liquid such as a hydrocarbon or Freon (Trade Mark). Sublimation of moisture may be effected by means of a cold, e.g. 27-32F., dehumidified air stream. Final drying may be effected by conventional hot air drying to a moisture content of 15% by weight, the temperature of the pieces being maintained below 130F. until the moisture content has been reduced to 20% or less by weight.
Patent GB-1127617-A (GB)
Title: A process for the production of powders from plastics materials or synthetic waxes
Inventor: RATZSCH MANFRED
IPC: A23B7/148
Filed: 1965-12-09
Abstract: 1,127,617. Making powdered plastics and wax. LEUNA - WERKE WALTER ULBRICHT VEB. 9 Dec., 1965, No. 52417/65. Heading B5A. [Also in Division C3] Finely powdered plastics material, e.g. polyethylene, or synthetic wax is made by mixing the working material in a molten state with super-heated water at super-atmospheric pressure, agitating the mixture, and then passing it through a valve into a vessel containing a fluid cooling medium at a lower pressure. As the mixture flows through the valve, a spray of molten droplets is formed together with superheated steam, the cooling medium being effective to cool and harden the droplets and to condense the steam to water. The resultant wet mass of powder is removed from the vessel, passed over a filter and then flow-dried.
Patent GB-1327138-A (GB)
Title: Apparatus for cutting through a block of light-weight concrete  or other semi-plastic material
IPC: B28B11/14
Filed: 1971-11-15
Abstract: 1327138 Cutting concrete blocks HENRIKSEN OG HENRIKSEN INDUSTRI AS 15 Nov 1971 [16 Nov 1970] 52932/71 Heading B5A A concrete block in a plastic state is supported on transversely spaced parallel slats 5 and conveyed on a carriage 1 to a cutting station where the carriage is lowered so that the slat ends are received on and supported by transversely spaced brackets 10 extending from U- shaped frameworks 8, 9. Thus each bracket receives one end of a slat from which depends a recessed boss 11 to receive a spigot 12 on the bracket. With the carriage spaced from the cutting station a rigid frame 13 with vertical cutting wires 14 is moved longitudinally of the slats, with the wires passing therebetween, from one end of the slats to the other. During this movement the cutting frame may be vertically vibrated or oscillated. After cutting, the carriage is introduced laterally under the slats and then raised until the slats rest on transverse beams 4 provided with slat spacers 6. Blocks 7 on the slats provide positioning stops to engage the beams. Alternatively the frameworks 8, 9 may be mounted on a carriage movable longitudinally of a stationary cutter frame.
Patent GB-1331114-A (GB)
Title: Purification of sulphurous gaseous effluents
IPC: B01D53/50
Filed: 1970-11-10
Abstract: 1331114 Treatment of effluent gases SHALE CORP 10 Nov 1970 [12 Nov 1969] 53504/70 Heading C1A SO 2  is removed from a hot gas stream (>250‹ C.) by mixing with water followed by NH 3  gas (1-3 moles per mole of SO 2 ) at a temperature above the decomposition temperature of (NH 4 ) 2 SO 3 , then cooling to below said decomposition temperature to form NH 4 <SP>+</SP> salt particles, and removing said particles. NO 2  in the gas stream is also removed as NH 4 NO 2  or NH 4 NO 2  and SO 3  is removed as (NH 4 ) 2 SO 4 . The temperature of the gas mixture during NH 3  addition is preferably at least 160‹ F. Entrained salt particles may be removed by scrubbing, and NH 3  regenerated from the scrubbing solution by (a) heating to at least 250‹ F. to form NH 3  and SO 2  which is passed over hot ZnO, CaO, PbO, MnO, MgO or calcined dolomite to absorb SO 2 , (b) by precipitating Ca salts from the liquor and heating to drive off NH 3 , or (c) by recycling the liquor to concentrate it, then cooling to crystallize NH 4  salts which may be decomposed and the gases separated as in (a).
Patent GB-1475558-A (GB)
Title: Catalytic hydrodealkylation of alkylaromatic hydrocarbons
IPC: B01J23/56
Filed: 1974-12-12
Abstract: 1475558 Catalytic hydrodealkylation INSTITUT FRANCAIS DU PETROLE 12 Dec 1974 [13 Dec 1973] 53784/74 Heading C5E Alkylaromatic hydrocarbons are dealkylated by contact with H 2  and a catalyst comprising (a) at least one metal selected from Ru, Os, Pd, Rh, Ir, Pt and Mn and (b) alumina, but not containing a non-noble metal Group VIII element, and having a metal content of 0À05-5 wt. per cent and a specific surface of 1-100 m.<SP>2</SP>/g.; the process being carried our at 400-650 C., 1-3 kg./cm.<SP>2</SP>, a space velocity of 1-10 and a H 2 / hydrocarbon molar ratio at the outlet of 71-10. The catalyst may also contain Mo, Re and/or W. Preferred catalysts contain 2 metals. The examples describe the preparation of benzene from a feed comprising mainly toluene.
Patent GB-1460120-A (GB)
Title: Electric circuit arrangements incorporating cathode ray tubes
IPC: H01J29/48
Filed: 1974-12-13
Abstract: 1460120 Cathode-ray tubes MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 13 Dec 1974 [20 May 1974] 54020/74 Heading H1D An electron gun producing a finely focused spot on a phosphor screen-e.g. of a shadowmask colour television tube-includes, in order from the cathode, a modulator electrode for controlling the beam intensity, a first anode, a second anode, and a third cylindrical focusing anode, arranged in operation to produce a beam cross-over between the modulator electrode and the first anode, and the second anode being maintained at a potential sufficiently lower than those of the first and third anodes to ensure that the beam enters the third anode at only a small angle of beam spread. The ratio of the second to first anode voltages is in the range 1 : 1À5 to 1 : 6, and of the third to second anode voltages in the range 1 : 0À03 to 1 : 0À1. As shown, the third anode is a bipotential assembly 11, 12, the first anode 8 being held at 600 to 1200 volts, the second anode at 200 to 400 volts, anode 11 at 4000 to 7000 volts, and anode 12 at 20,000 to 30,000 volts. Since the angle # is small, the area of cross-section of the anode occupied by the beam is small, reducing the effect of spherical aberration on the final spot size. Many examples are given, and an arrangement in which the focusing anode 10 is of unipotential type is described (Fig. 9, not shown).
Patent GB-1130959-A (GB)
Title: Building blocks for electrical assemblies
IPC: G09B23/18
Filed: 1966-12-06
Abstract: 1,130,959. Building blocks. INTERNATIONAL STANDARD ELECTRIC CORP. 6 Dec., 1966 [9 Dec., 1965], No. 54467/66. Heading A6S. [Also in Divisions G5 and H1] A building block of the type having spigots and sockets which are sufficiently resilient to remain interlocked with similar blocks when assembled, each block being equipped with one or more electrical components, includes a switch comprising a plurality of leaf-type spring contacts and an actuating knob, the springs being attached to conducting spigots on the block and being mounted within the block, and the knob being attached to a rectangular slide plate trapped between a surface of the block and the springs, the slide being capable of longitudinal sliding movement over said springs to actuate them, and the knob projecting through an aperture in said surface. As illustrated the knob 7 causes leaf-type spring contact plates 2a or 2b to engage with contact plates 3a or 3 respectively. The contact plates are connected to the spigots 4 and include tags 5. The block includes a bottom plate (6) (Fig. 2 not shown). The knob 7 of a make-break switch (Fig. 3 not shown) includes a push button (1) so arranged that upon actuation, when the switch is in its break position, the switch can be momentarily closed.
Patent GB-1261487-A (GB)
Title: Gas discharge display device
IPC: H01J11/00
Filed: 1970-11-17
Abstract: 1,261,487. Glow - discharge lamps. NATIONAL CASH REGISTER CO. 17 Nov., 1970 [24 Nov., 1969], No. 54586/70. Heading H1D. Gas-filled character cells 13, 15, 17 stacked between end plates 21 and 27 are energized by voltages applied between a transparent common electrode 28 carried on end wall 21 and overlying all the cells and individual electrodes 32, 34, 36 carried on end wall 27 and each overlying part only of one cell. In the embodiment shown the cells 13, 15, 17 are formed by apertures cut through glass plates 22, 24, 26 and closed by the end plates 21 and 27 and intermediate plates 23 and 25. Electrode 28 is a transparent coating of tin oxide, cadmium oxide or gold. Electrodes 32, 34 and 36 may be similar coatings. Holes 29 in the plates form a passageway leading to a conduit 30 used to evacuate the assembly and to introduce a filling of neon and argon at a pressure of 15-30 mm. Hg with the optional addition of nitrogen. Communication from the passageway 29 to the character cells may be by way of a channel cut in each plate (Fig. 4, not shown), or by mounting each character plate on an insulating plate provided with a network of passages (Fig. 2, not shown) or by relying on natural or artificially provided irregularities in the surfaces of the plates. Two or more cells may be provided in each character plate to form a multi-character display (Fig. 6, not shown). In alternative embodiments (Figs. 7 and 8, not shown), channels representing different characters are cut in opposite faces of each character plate and are closed either by an intermediate plate or by a mirror image channel in an adjacent character plate, the intermediate plate being omitted.
Patent GB-1496765-A (GB)
Title: Examining sheet material photoelectrically
IPC: G01N21/89
Filed: 1974-12-19
Abstract: 1496765 Examining sheet material CIBAGEIGY A G 21 Nov 1975 [19 Dec 1974] 54869/74 Heading G1A A method of detecting faults comprises scanning the surface by a beam of electromagnetic radiation, which thereafter is directed to a photo-cell to produce a wideband electrical signal, which is electronically processed into a quotient signal corresponding to the high frequency component divided by the low frequency component, applying this to an amplitude discriminator, an excessive output from which indicates a fault as a digital signal. A beam from a rotating polygonal mirror drum scans a travelling web, light transmitted from which is directed to a photo-multiplier. In a second embodiment the beam from the polygonal mirror reaches the web as it bends round a roller, via a mirror. Reflected light reaches the photo-multiplier via a curved mirror. In a circuit embodiment the photo-multiplier output is fed via high-pass and low-pass filters to the numerator and denominator inputs respectively of an analogue dividing circuit feeding an amplitude discriminator with a digital output. In another embodiment the high-pass filter is in the output of the dividing circuit instead.
Patent GB-1263366-A (GB)
Title: Carboxylic acids
IPC: C07C51/14
Filed: 1969-11-10
Abstract: 1,263,366. Carboxylic acids. ETHY CORP. 10 Nov., 1969 [18 Nov., 1968], No. 54965/69. Heading C2C. Carboxylic acids are obtained by reacting an α-olefine having 2 to 30 carbon atoms with carbon monoxide and water in a liquid medium in the presence of a catalyst comprising a salt of tin or germanium together with a platinum salt. The reaction may be effected at 75-150‹C. under a pressure of 1000-5000 p.s.i. Suitable reaction media include ketones of up to 11 carbon atoms and alkyl ethers. A number of tin, germanium and platinum salts are specified, and examples are given of the manufacture of ntridecanoic and n-heptanoic acids from dodecene-1 and hexene-1, respectively.
Patent GB-1358365-A (GB)
Title: Lead-through members
IPC: C04B37/02
Filed: 1972-11-29
Abstract: 1358365 Ceramic-metal seals PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 29 Nov 1972 [1 Dec 1971] 55137/72 Heading B3V [Also in Division C1] A metal conductor 2 is sealed in a stepped bore 3, 4 in a ceramic wall 1 exceeding 2 mm. in thickness by a vitreous material 5 which fills the part 3 and forms in the bottom of the part 4 a layer 6 of 100-1000 Ám thickness, forming a meniscus on the conductor and the wall 8, the length of part 3 of the bore being not more than 2 mm. A molybdenum conductor 2 in a digital light deflection system is sealed in an alumina wall 1 using the following vitreous material, percentages by weight: MnO 37%, SiO 2  50% and Al 2 O 3  13%. The conductor is positioned in the bore and a suspension of the vitreous material in a 3% solution of nitrocellulose in butyl acetate painted on to the conductor and the bottom of part 4. The vitreous material is fused at 1300 C. for 10 minutes in a wet mixture of hydrogen and nitrogen.
Patent GB-1365887-A (GB)
Title: Electroluminescent panel
IPC: H05B33/06
Filed: 1971-11-12
Abstract: 1365887 Matrix displays ROTAX Ltd 12 Nov 1971 [21 Nov 1970] 55496/70 Heading G5C [Also in Division H2] An electroluminescent panel includes a multi-lead electric cable, 13, a first electrode 10 defined by an axial end region of the cable, the cable comprising a plurality of elongate leads each having a conductive core in an electrically insulating coating whereby the cores are mutually isolated, a second translucent electrode 11 and a layer of electroluminescent material 12. The leads at the axial end are bonded together. Preferably a transparent conductive coating is applied to the second electrode on the face remote from the EL material. The axial end of cable 13 is ground flat so that the electrode 10 consists of separated areas of conductor, and also of insulator. Material 12 may be a phosphor layer and a dielectric layer (e.g. barium titanate), the latter applied to electrode 10 by inter alia, a silk screening process, and similarly the phosphor. The assembly is then cured, e.g. in a vacuum oven. Electrode 11 (e.g. Ni/Cr alloy) may be applied by vacuum deposition to 75% transparency. Transparent protective layer 16 may be glass or synthetic resin. In operation, A.C. is applied between electrode 11 and a predetermined number of cores 14 of the cable. Digital readouts are exemplified.