baber/WOPTO huggingface dataset:
Patent GB-1208520-A (GB)
Title: A silenced aircraft jet engine nozzle
Inventor: DUVAL JACQUES GEORGES
IPC: F02K1/38
Filed: 1968-10-14
Abstract: 1,208,520. Jet propulsion nozzles. SOC. NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION. Oct. 14, 1968 [Oct. 19, 1967], No. 48596/68. Heading F1J. The invention relates to a jet propulsion nozzle of the convergent-divergent type in which a series of guide elements are pivotally mounted in the divergent wall of the nozzle, the guide elements being movable between an inoperative position in which they lie in the divergent wall surface and an operative position in which they project into the hot gas jet stream and guide inflow of air into the jet stream so as to effect noise suppression. The jet nozzle assembly shown comprises a primary nozzle 1 which has a series of flaps 2 pivotallymounted at the downstream end, the hot gas flow being indicated by arrow 23. A secondary nozzle is disposed around the primary nozzle and defines a convergent portion 3a, a nozzle throat 3b and a divergent portion 5a, a series of flaps 8 being pivotally-mounted at the downstream end thereof. Openings 4a are provided in the outer wall 3 for inflow of ambient air into the annular space between the nozzles 1 and 3 as indicated by arrow 25. Secondary air-flow between the nozzles 1 and 3 is indicated by arrow 24. A series of guide elements or chutes 9 are pivotally-mounted on the wall of the divergent portion 5 for movement between an inoperative or retracted position shown in Fig. 1a which is the position for normal flight, and an operative or projected position shown in Fig. 1 which is the position for take-off and climb-away flight when noise suppression is required. Each chute comprises inner and outer walls 9a, 9b and side walls 9c Fig. 3, and is open at its ends for air-flow therethrough. Each chute has a cranked lever 11 secured thereto, the lever being pivotally-mounted at 12 on the fixed structure 5a. A lever 15 is pivotally connected to the lever 11 and to a member 17 which may be moved axially by means of an actuator 20. An opening 10 is formed in the divergent wall 5a in line with each chute 9. Each chute is movable between the inoperative position shown in Fig. 1a in which the opening 10 is closed off by the chute and the operative position shown in Fig. 1 in which the chute projects into the jet stream and the opening 10 is open for the inflow of ambient air. In the operative position each chute 9 projects into the jet stream and directs some of the air-flow 24a into the jet stream as indicated by the arrow 29. Each chute may alternatively be of channel section instead of box section. Flexible members may be disposed around each opening 10 so as to provide a seal when the chute is in the retracted position. An opening 26 is provided in the outer wall of the nozzle and is closable by means of a member 27.
Patent GB-1532434-A (GB)
Title: Method and device for regenerating an impure effluent fluid and product obtained thereby
IPC: D06B23/20
Filed: 1975-11-26
Abstract: 1532434 Solvent recovery TECHNIGAZ 26 Nov 1975 [27 Nov 1974] 48612/75 Heading B1B In a solvent recovery plant (e.g. for NH 3  gas and contaminated NA 3  liquid i.e. below -33.4‹C, used to treat textile material to remove oils &c.) vapour of the solvent is passed through a liquid column (11) to absorb the vapour evolved and the resultant liquid + absorbed matter is fractionally distilled in a column (19) with heating to pass solvent vapour (path 28) to condenser 30 and then to a liquid storage tank 34 for 1) re use in an apparatus e.g. textile plant 1, or 2) as a reflux liquid at inlet 40 of first fractional distillation column 19; and in which dirty solvent (e.g. cold liquified NH 3 ) is passed to a second fractional distillation column 53 (by way of pump 50 and heat exchanger 42 in cold inlet, warm outlet path) to remove NH 3  as a gas from a dirt and oil residue through line 62. From line 62 the gas passes to condenser(s) e.g. 64 and to a second storage tank 68. From tank 68 it may be fed back to the textile plant 1 or used as a reflux liquid to inlet 74 of second fractional distillation column 53. The levels of liquid in the textile plant (1), the supply of make up NH 3 , and the operating parameters of the fractional distillation columns 19 and 53 are maintained by servo valves 86, 89, 92 and 95 controlled by sensors.
Patent GB-1292951-A (GB)
Title: Improvements in or relating to calculators
Inventor: BASTOW DONALD
IPC: G06G3/00
Filed: 1968-10-15
Abstract: 1292951 Fixed ratio converter COX'S and D BASTOW and H R MORGAN 13 Jan 1970 [15 Oct 1968] 48747/68 Heading G4B A fixed ratio converter comprises two circular rotatable dials disposed side by side and interconnected. by gearing, the ratio of the gearing being determined by the appropriate conversion factor and each dial being calibrated according to one of the scales between which conversion is to be made, a common indicating mark for both dials, a respective revolution counter associated with each dial, and a hand operated mechanism having both coarse and fine provision for adjusting the position of one of the dials. As shown, wheels 6, 7 bear calibrations which may be viewed via a lens 13, a mark 15 being made on the back of the lens. Wheel 7 has teeth inset behind the calibrated portion and wheel 6 has teeth (not shown) extending beyond the calibrations so that at the point behind line 13 the wheels overlap and no teeth are viewed. Wheel 6 is drivable (a) via hand wheel 23 connected with a wheel 26 (Fig. 2) which in turn meshes with a small gear located on the rear of wheel 6, (b) via a wheel 29 free on shaft 25 and meshing directly with the periphery of wheel 6, the edge of the disc 24 being accessible for fine adjustments. The wheels may be made of moulded plastics material. An indication that the three digit counter has reached the end of its range may be given by incorporating coloured digits on the higher orders of the other counter. As described, the conversion is from inches to millimetres, but a conversion from imperial areas to metric areas is contemplated which uses a gear train of two wheels interconnecting the dial wheels.
Patent GB-1484585-A (GB)
Title: Preparation of copolymers
IPC: C08G18/80
Filed: 1974-11-12
Abstract: 1484585 Modified polymers VIAKOVA KUNSTHARZ AG 12 Nov 1974 [12 Nov 1973] 48931/74 Heading C3P Modified polymers which are water-soluble on neutralization are prepared by (A) copolymerizing in a water-miscible solvent a mixture of (a) 5-25 parts by weight of acrylic acid methacrylic acid or a mono-ester of an unsaturated dicarboxylic acid with a C 1-4  mono- or di-hydric alcohol (b) 20-80 parts by weight of a C 1-5  alkyl ester of acrylic or methacrylic acid and (c) up to 60 parts by weight of a vinyl aromatic monomer, the sum of (a)+(b)+(c) being 100 parts, and then (B) reacting the product with either an equimolar mixture of, or an equimolar reaction product of, 20-35 parts by weight of a diicocyanate in which the two isocyanate groups are not of equal reactivity and 30-50 parts by weight of a C 16-20  unsaturated monocarboxylic acid. In examples, the copolymers are of acrylic acid/n-butyl acrylate/styrene, butylene glycol mono - maleate / ethyl acrylate / isobutyl methacrylate / vinyl toluene or methacrylic acid, ethyl acrylate/methyl methacrylate/ styrene, and are modified by reaction with linolenic acid/isophorone diisocyanate mixture or reaction product, soya oil fatty acid/isophorone diisocyanate mixture or reaction product, or linolenic acid/commercial tolylene diisooyanate mixture. The products may be neutralized with an inorganic or organic base, e.g. triethylamine. Use.-As binders in air-drying paints.
Patent GB-1413473-A (GB)
Title: Regenerative heat exchangers
IPC: F28D17/04
Filed: 1971-10-21
Abstract: 1413473 Thermal regenerators SVENSKA ROTOR MASKINER AB 19 Oct 1972 [21 Oct 1971] 48950/71 Heading F4K In a thermal regenerator in which hoods 12, 16 are provided respectively at each end face of a heat transfer matrix 10 for the conveyance of one of the heat exchanging fluids to and from the matrix, the fluid supplied to the hood 12 is distributed in a uniform manner to the hood outlet adjacent the matrix end face by a group of vanes 22 which direct the fluid in a generally radially outward direction from the inlet 14, and by a group of vanes 26 spaced from the vanes 22 and acting to redirect the fluid in a direction at right angles to the matrix end face. The regenerator shown has a stationary, cylindrical matrix 10, and rotary supply and discharge ducts 12, 16 for one fluid which may be either flue gases, or air to be heated; the other fluid being guided in contra-flow to and from the matrix via conical housing elements 18, 20.
Patent GB-1184208-A (GB)
Title: Securing Windings to Transformer or Reactor Cores
Inventor: PALMER SELWYN
IPC: H01F27/30
Filed: 1967-10-27
Abstract: 1,184,208. Transformers and inductors. BRUCE PEEBLES INDUSTRIES Ltd. 15 Nov., 1968 [27 Oct., 1967], No. 49010/67. Heading H1T. A cylindrical winding, or a cylinder 11 (e.g. of synthetic resin bonded paper) supporting such a winding, is secured on a core leg 12 of a power transformer or reactor by packing pieces 15 cast in position. The packing pieces may comprise flexible walled tubes 14 of material resistant to hot transformer oil (e.g. polyvinyl chloride) and are filled with a mixture of a cold setting resin (such as a polyester resin) and a filler. The tubes 14 are an interference fit so as to be slightly deformed before being filled under pressure from the bottom. Additional preformed packing pieces 13 (e.g. of wood) may also be provided.
Patent GB-1514240-A (GB)
Title: Gunn effect semiconductor device
IPC: H01L47/02
Filed: 1975-11-28
Abstract: 1514240 Gunn effect THOMSON-CSF 28 Nov 1975 [29 Nov 1974] 49124/75 Heading H1K In a Gunn effect device the current between cathode 30 and anode 2 is caused to spread, in the manner indicated by arrows 10, by the presence, at the cathode side of active layer 1, of a mosaic of injecting zones A and blocking zones B. In the preferred arrangement the active layer 1 and anode 2 are of respectively n and n<+> type GaAs. The injecting zones A may comprise n<+> epitaxial zones or metal layers, e.g. of Ge-Au alloy. The blocking zones B may comprise p type material, e.g. formed by epitaxy, diffusion or ion implantation, or a Schottky barrier-forming metal such as Pt or Ni. Various combinations and configurations are disclosed. Separate bias sources may be connected to the zones A and B, but in most embodiments a common bias source suffices connected to a common cathode contact 30.
Patent GB-1353000-A (GB)
Title: Anti-halation layers for photographic silver halide materials
IPC: G03C1/835
Filed: 1970-10-20
Abstract: 1353000 Photographic silver halide materials AGFA-GEVAERT 12 Oct 1971 [20 Oct 1970] 49791/70 Heading G2C Photographic silver halide materials having a hydrophobic film support carry on the opposite side of the support to the emulsion layer an antihalation layer comprising a dye or pigment (e.g. carbon or silver) dispersed in a waterinsoluble, alkali-soluble polymer, and between the support and said antihalation layer an intermediate layer formed from a mixture of 1 to 3 parts by weight of a cellulose ester and 3 to 1 parts by weight of an alkali-soluble polymer. Cellulose esters specified are the di - and triacetate, and alkali-soluble polymers are sulphonated polystyrene, copolymers of styrene with maleic acid, acrylic acid or methacrylic acid, copolymers of vinyl acetate with maleic acid or crotonic acid and nitrated copoly (styrene/maleic acid). The antihalation layer binder may be a copolymer of acrylic acid with styrene or methyl acrylate or copoly (ethyl acrylate/methyl methacrylate/methacrylic acid).
Patent GB-1477726-A (GB)
Title: Preparation of arylene sulphide polymers
IPC: C08G75/02
Filed: 1974-11-19
Abstract: 1477726 Arylene sulphide polymers PHILLIPS PETROLEUM CO 19 Nov 1974 [19 Nov 1973 8 Aug 1974] 50118/74 Heading C3R In the production of p-arylene sulphide polymers, there are reacted together at a temperature in the range 235-450‹ C.: (A) pdihalo aromatic reactant comprising one or more compounds of the formula where each X is Cl, Br or I, and each K<SP>1</SP> is H or a hydrocarbyl group, the total number of carbon atoms in the molecule not exceeding 24 and in at least 50 mole per cent of the p-dihalo aromatic reactant all four R<SP>1</SP> groups are hydrogen; (B) an alkali metal carboxylate of the formula RCO 2 M, where R is a hydrocarbyl group of up to 20 carbon atoms and M is lithium, sodium, potassium, rubidium or cesium, the carboxylate being present in the reaction mixture in an amount of from 0À05-4 moles per mole of the p-dihalo aromatic reactant; (C) an organic amide which is liquid under the reaction conditions; and (D) a source of sulphur selected from the following: (i) lithium, sodium, potassium, rubidium, cesium, magnesium, calcium, strontium or barium thiosulphate; (ii) a thiourea; (iii) a thioamide; (iv) elemental sulphur; (v) carbon disulphide or carbon oxysulphide; (vi) a thiocarbamate; (vii) a mono-, di- or trithiocarbonate; (viii) an organic mercaptan, mercaptide or sulphide having an alpha or beta activating substituent; (ix) phosphorus pentasulphide; and (x) an alkali metal sulphide or bisulphide; when the sulphur source comprises a reactant as specified under items (i)-(ix), the reaction mixture also contains a base and when an alkali metal sulphide or bisulphide, (x), is used a base is optional; also, when R in the carboxylate is aryl the temperature is at least 255‹ C. In examples the dihalo aromatic compounds are 1,4-dichlorobenzene and 2,5-dichloro-p-xylene; the alkali metal carboxylates are sodium acetate, potassium acetate, lithium acetate, sodium propionate, lithium benzoate and sodium benzoate; the organic amide is N-methyl-2-pyrrolidone and the sources of sulphur are sodium sulphide, sodium bisulphide N-methyl-2-pyrrolidinethione, carbon disulphide and elemental sulphur; sodium hydroxide is used as a base. Uses.-Fibres and films.
Patent GB-1523432-A (GB)
Title: Turret gun arrangements
IPC: F41A9/16
Filed: 1971-10-29
Abstract: 1523432 Ordnance loading devices MARCONI CO Ltd 29 June 1972 [29 Oct 1971] 50411/71 Heading F3C A turret gun arrangement comprises within the turret a plurality of concentric annular storage members for storing rounds of ammunition for the gun, there being means for selectively moving a round of ammunition from its position in a storage member to a position in which it may be engaged by means for offering up the round to the breech loading mechanism of the gun. A construction of fighting tank is described in which the turret contains no personnel but houses concentric annular storage members, one for each of a different class of ammunition. A central tube 6 passes from top to bottom of the main body 8 of the turret which has within its outer wall three coaxial walls 9, 10, 11 providing three coaxial chambers 12, 13, 14. These walls are flanged on their upper surfaces to carry rollers 15 supporting three coaxial ammunition storage indexing ring members 16, 17, 18 which may be individually rotated. Each member 16, 17, 18 consists of an upper ring 26 carrying a ring gear and a lower ring 27 connected by sidewalls to define a circumferentially extending space in which individual plates 28 are supported by the lower rings 27. The rounds of ammunition are supported by the plates 28, extending through perforations in the lower rings 27 to hang down within coaxial chambers 12, 13, 14, The rounds are loaded through holes 29 in the upper rings 26. Slots 30 are provided in the sidewalls of ring members 16, 17, 18 so that when the perforations in the lower rings of all three ring members are radially aligned, radially extending slots appear which are of sufficient width to pass the body of a round of ammunition. Slidably mounted on the central tube 6 is a lifting platform 31 which rests in a passageway 32 cut through the walls 9, 10, 11 and which has a cupped end 33 for engaging the end of a round of ammunition positioned immediately beneath the holes in the outer ring member 16. A collar 35 pivotally mounted in a loading gantry 36 of the gun is positioned directly above the cupped end 33. Within passageway 32 is a transfer fork 41 mounted on an actuator 42, this serving to engage a round of ammunition in either of the two inner ring members 17, 18 as these are rotated towards the fork and to move the round into the outer ring member 16.
Patent GB-1275575-A (GB)
Title: Hydraulic storage apparatus with floating piston
Inventor: ELMER ADAM
IPC: F15B1/24
Filed: 1969-10-15
Abstract: 1275575 Hydraulic accumulators A ELMER 15 Oct 1969 [18 Oct 1968] 50692/69 Heading F1P The liquid contacting side of the floating piston 7 of a hydro-pneumatic accumulator has a nose 11 surrounded by a flat annular surface 12 which when the cylinder is nearly empty of liquid and the nose 7 projects into the dished base, abuts a stationary sealing ring 14 and traps residual liquid in a chamber 18, and so prevents leakage of gas past a scraper ring 10, a sealing ring 8 and a guide ring 9 carried by the piston 7. On admitting pressurized liquid through an opening 2 to the nose 7 a check valve 15 opens to admit the liquid to chamber 18 and assist in lifting piston 7. (For Figure see next page)
Patent GB-1063310-A (GB)
Title: Nuclear reactor
IPC: G21C1/08
Filed: 1963-12-23
Abstract: 1,063,310. Reactors. HITACHI Ltd.- Dec. 23, 1963 [Dec. 27, 1962], No. 50791/63. Heading G6C. A reactor core comprises a plurality of separate regions, such as a fast fission region and a thermal fission region, each part being installed in effect in. a separate pressure vessel. A first embodiment (Fig. 1, not shown), comprises a cylindrical pressure vessel containing a fast fission region surrounded by a coaxial annular pressure vessel containing a thermal fission region. In the second embodiment (Fig. 2), the two pressure vessels 7, 8 are integral and are of circular and annular cross-section respectively. The inner fast fission core region 5 includes top and bottom reflectors 13 and control plates 9. The outer thermal fission region contains cruciform section control rods 10. Coolant circulation.-Water enters at 14, is boiled in the thermal fission region, and leaves via 15 to a steam separator. Saturated steam from the separator enters the reactor at 16 passes upwards through ducts 11 and downwards through the fast fission region -5, where it is superheated, and leaves via outlet 17 for delivery to a turbine. The water acts as moderator in the thermal fission region.
Patent GB-1269787-A (GB)
Title: Position transducing system
IPC: H03M1/00
Filed: 1969-10-16
Abstract: 1,269,787. Measuring displacement electrically. INTERNATIONAL BUSINESS MACHINES CORP. 16 Oct., 1969 [31 Oct., 1968], No. 50866/69. Heading G4H. [Also in Division G1] A writing telegraph system comprises a writing tablet represented by a resistance 15 to one end of which is supplied a voltage V 1  sin #t, the other end being connected in cyclic alternation to a point at earth potential and to a point at the supply voltage V 1  so that the magnitude of the voltage V IN , at a detector 31 capacitively coupled 29 to a stylus of which the position coordinate is required, is representative in alternation of that fraction of the supply voltage coupled by the capacitance 27 but independent of stylus position (period T 1 -T 2 , Fig. 3c) and of that fraction of the supply voltage tapped off as a function of stylus position and coupled by the capacitance 29 (period T 2 -T 1 , Fig. 3c). The position-dependent voltage is integrated at 33 for a fixed time T 2 -T 1  and then the integrator is supplied with the inverted positionindependent voltage and the time t 0 , Fig. 3e, measured to restore the zero level at the integrator. Thus t 0 : T 2  - T 1  is as X:L, where X is stylus co-ordinate and L is resistor length. The time to is measured in a register 21 fed with clock 11 pulses via a counter 13, which counter drives the filter 17 to generate the supply voltage. Fig. 4 (not shown) illustrates an embodiment for measuring X and Y coordinates of the stylus.
Patent GB-1494120-A (GB)
Title: Magnetically levitated vehicle
IPC: H02K41/02
Filed: 1975-12-12
Abstract: 1494120 Levitation systems JAPAN AIR LINES CO Ltd 12 Dec 1975 [13 Dec 1974] 50978/75 Heading B7L A magnetically levitated vehicle comprises two rows of modules 4 disposed symmetrically with respect to the longitudinal vertical median plain of the vehicle body 5, each module 4 including a frame 4c supporting attractive electromagnets 4a, and a respective suspension structure connecting each module 4 to the body 5 to allow limited motion of the body relative to each module. Each suspension structure comprises a link system and particularly permits limited vertical, lateral and yawing motion of the body 5 relative to each module while minimizing forward, backward and rolling motion. The link system shown in Figs. 4, 5A and 5B, comprises a respective first pivoted linkage 7a, 8a and a respective second pivoted linkage 10a, 11a, 12a, 13a and 14a at each end of module 4, as well as at least one thrust link 15, disposed between the vehicle body 5 and the module frame 4c. Vertical and lateral air springs 9a, 9b and 16a, 16b respectively are also provided in each suspension structure. Each module 4 further includes a linear induction motor winding 4b for propulsion of the vehicle, the electromagnets 4a and windings 4b cooperating with steel rails 2 and reaction rails 2a, respectively, extending along an elevated track 1.
Patent GB-1070986-A (GB)
Title: Improvements in or relating to method of and apparatus for forming magnetic images
IPC: G03G5/16
Filed: 1963-12-30
Abstract: 1,070,986. Thermo - magnetic images. XEROX CORPORATION. Dec. 30, 1963 [Jan. 2, 1963], No. 51232/63. Heading B6C. Magnetic images are produced by applying a uniform magnetic field to a ferromagnetic layer, exposing the ferromagnetic layer to a heat pattern so that the heated portions are heated above the Curie point temperature of the material and thus forming a latent magnetic image, developing the latent magnetic image with magnetically attractable particles, uniformly heating the image-bearing layer above the curie-point temperature to demagnetize it and transferring the powder image to a receptor sheet. The exposure to a heat pattern may be performed by exposing an original to infra-red radiation or by using metal characters on a heat-insulating backing as a heating platen or by using a series of resistance heaters in rows and columns to produce any desired character. The developed image on the receptor sheet may be fixed by heating or solvent vapour or by spraying with an adhesive overcoat. As shown, a ferromagnetic web 21 is magnetized by magnets 23 and 24 and exposed to original on web 25 by infra-red source 28. The latent image is developed by an iron powder 34 cascaded from buckets 32 and is transferred to copy paper 36 by means of magnet 39, the web being demagnetized by heater 38, and the transferred image being fixed by heater 42. Specified magnetic materials are copper, nickel and manganese zinc ferrite. Alternatively, the latent magnetic image may be contacted with a paper coated with magnetically attractable particles so that an image is obtained on both sheets.