baber/WOPTO huggingface dataset:
Patent GB-1371777-A (GB)
Title: Reaction of aluminium oxide with fluorides
IPC: C01F7/50
Filed: 1971-12-30
Abstract: 1371777 Reaction of fluorides with alumina BAYER AG 30 Dec 1971 [31 Dec 1970] 60711/71 Heading C1A HF, NH4F and/or an alkali metal fluoride, which may be present in a waste gas stream, is contacted with Al2O3 having a surface area of at least 250 m.<2>/g., a residual water content of 2-15% by wt. and a water absorption capacity at 50% R.H. of more than 10% and prepared by flash heating Bayer Al(OH)3 (hydrar gillite), the contact being carried out at 20-700‹ C. when AlF3 and/or cryolite is being prepared and at 20-100‹ C. when ammonium cryolite is being prepared. Fluorides may be separated from gases by passing the stream upwardly into the U-shaped tube 1 whilst Al2O3 particles are introduced via side tube 3. The solids are separated in cyclone 4 and the purified stream vented via 5 and wet-scrubbed to remove SiF4. Ammonium cryolite may be prepared from an aqueous solution of NH4F obtained by ammoniating H2SiF6 solution to a pH of 8-9.
Patent GB-1223039-A (GB)
Title: Process for the manufacture of methylene bridged polyarylamines
IPC: C08G18/76
Filed: 1968-12-20
Abstract: 1,223,039. Polymethylene-bridged arylamines. IMPERIAL CHEMICAL INDUSTRIES Ltd. 10 Dec., 1969 [20 Dec., 1968]. No. 60718/68. Heading C2C. Methylene bridged polyarylamines are produced by reacting a primary arylamine with formaldehyde at an elevated temperature in the presence of a neutral ammonium salt as catalyst. A neutral salt of a metal, e.g. an alkali or alkaline earth metal halide may also be present. The reaction of formaldehyde with aniline and o-toluidine is exemplified. Suitable primary arylamines include the nitro-anilines, anisidines, phenetidines, naphthylamine, 1,5- naphthylene diamine, alkyl anilines, chloro- and bromo-anilines, benzyl aniline, tolylene diamines and phenylene diamines.
Patent GB-1205350-A (GB)
Title: Nuclear reactor fuel element
IPC: G21C3/17
Filed: 1969-12-16
Abstract: 1,205,350. Fuel elements. KERNFORSCHUNG m.b.H. GES. FUER. 16 Dec., 1969 [23 Dec., 1968], No.61170/69. Heading G6C. The cam 1 of a rod-type fuel element is extended beyond the fuel zone 2 to form a fission gas plenum 3 which is subdivided into two regions, a fission gas collection space 4 and a vapour-containing space 5. The space 4 is provided by a tube 6, the upper end of which is connected to the fuel zone 2 and the lower end of which is open and extends into the bottom of the plenum 3. The space 5 is formed by the cam 1, a separating disc 7 adjacent the fuel zone 2, the tube 6 and a sealing plug 8. The plug 8 may be of lead which is liquid at the operating temperature and assumes a position which depends upon the relative quantities of gas and vapour, respectively, in the two spaces 4 and 5. Before use, space 5 is filled with a specific liquid and space 4 with an inert gas, e.g. helium. The quantity of liquid may be such that the vapour pressure at the operating temperature is about the same as the coolant pressure. However, it is also possible to keep the internal pressure slightly lower at the beginning of the service life so that the cam is first relieved from stress with increasing fission gas pressure. With the further increase in the fission gas pressure, the internal pressure in spaces 4 and 5 increases until the vapour in space 5 has reached the dry saturated condition. From then on, the internal pressure in spaces 4 and 5 remains constant as the vapour condenses and the volume this releases is taken up by the fission gases. Only after all the vapour has condensed does the internal pressure rise again. In an alternative embodiment (Fig. 2, not shown), several thin tubes are arranged in the plenum with their upper ends closed and their lower ends open and extending into the bottom of the plenum. The tubes contain the liquid to be evaporated which is separated from the fission gases by a plug which liquefies upon heating.
Patent GB-1207038-A (GB)
Title: Improvements in a machine for filling and closing of collapsible tubes, ampoules and similar containers
IPC: B65B7/14
Filed: 1968-12-30
Abstract: 1,207,038. Packaging. ARENCO A.B. 30 Dec., 1968 [12 Jan., 1968], No. 61613/68. Heading B8C. A device in a machine for filling and closing of collapsible tubes and similar containers, which prior to the closing operation thereof have to take a predetermined position of turn in relation to a vertical axis in dependency of a readable marking 4 provided on the container 3, the latter being brought to rotational movement by a rotatable spindle (7) driven by an electric motor 6 and displaceable into engagement with the bottom of the container or a retainer (1) for the container and rotated by said spindle into the predetermined position, which is indicated by a photo-electric scanner (5) when scanning the marking, is characterized in that the spindle (7) is coupled to a multi-polar electric step motor (6) having a number of poles corresponding to the desired angular turn per step and devised to be driven one step for each pulse in a pulsetrain from an oscillator (9) having varying pulse frequency, said pulse-train during a first time interval having a relatively low pulse frequency which during a second time interval is increased to a maximum value, said first time interval corresponding to the time consumed by the spindle to cause it without any substantial slip relative the container or retainer to accelerate the same from zero to the predetermined rotational speed, which is determined by the frequency of the pulses emitted from the oscillator during said second time interval. As shown, a conical mandrel 8 is suitably kept pressed down against the upper open end of the tube 3, and the amplifier 9 is operative on the closing of a contact 14 by a cam 13 and in conjunction with the photo-cell 5.
Patent GB-1279110-A (GB)
Title: Electric railway lines
Inventor: TEICHMANN GORDON ALGER
IPC: B60M5/00
Filed: 1969-12-29
Abstract: 1279110 Welding by pressure IMPERIAL CHEMICAL INDUSTRIES Ltd 19 April 1971 [29 Dec 1969] 63037/69 Heading B3R [Also in Division H2] An aluminium or aluminium alloy conductor 10 is welded to aluminium or aluminium alloy 11, 11<SP>1</SP> to steel 12, 121 transition joints which are in turn welded to two lengths of steel rail. The transition joints can be formed by either friction welding or explosive bonding techniques and may have a bond area of 5 to 25 cm.<SP>2</SP> the aluminium or alloy portion of the joints preferably being more than 10 mm. thick and the steel portion more than 30 mm. thick. The transition joints may be made by welding or bonding two large area plates and then dividing the bonded plates into a number of small area portions to provide a number of the joints.
Patent GB-1278340-A (GB)
Title: New elastic filaments and bristles and their production
Inventor: COUCHOUD PAUL
IPC: D01F6/76
Filed: 1969-12-29
Abstract: 1278340 Diorganopolysiloxane fibres SOC RHODIACETA 29 Dec 1969 [30 Dec 1968 14 Oct 1969] 63149/69 Heading B5B [Also in Division C3] Filaments and bristles having a vulcanized diorganopolysiloxane as the filament-forming material and which possess both a kilometric breaking strength above 1À25 and an elongation at break of at least 300% are disclosed. The filaments may be made from a mixture comprising essentially: (a) 1000 parts by weight of an unvulcanized diorganopolysiloxane of formula where R represents monovalent unsubstituted or substituted hydrocarbon radicals, of which at least 60% are methyl and 0À03-2% are vinyl and which are free from substituents liable to interfere with the vulcanization process or to impair the long-term stability of the filaments or bristles, and where R<SP>1</SP> and R<SP>11</SP>, which may have the same or different meanings, represent H or an -SiR 3  group, and where n represents a number from 2,000 to 20,000. (b) 300 to 1000 parts by weight of a filler. This may be a form of silica having a high surface area (and may or may not have been treated with an organosilicon compound) such as pyrogenic silicas and silicas produced by precipitation, diatomaceous silicas, ground quartz, talc, mica, clay or sand. Also usable are lampblack, graphite, titanium oxides, iron, magnesium, zinc, antimony and aluminium oxides, calcium, magnesium and zinc carbonates, fibrous fillers such as asbestos or glass fibre and metallic powders, e.g. those based on aluminium, tin, zinc or iron. Other filters or adjuvants may also be added.  (c) 3 to 30 parts by weight of a vulcanization catalyst. Many known producers of free-radicals may be used, such as organic peroxides and percarbonates and the oxaziridines, or catalysts based on platinum, in particular mixtures of a hydrogenopolysiloxane and platinum. (d) A plasticizer may also be added, generally no more than 50 parts by weight. Amongst such compounds are (tetramethylethylene dioxy)- dimethylsilane, diphenylsilanediol and hydroxylated or alkoxylated oils. In apparatus as shown, the composition is extruded through a spinneret (3) and the resulting filaments stretched by rollers (4) and (5) at a stretch ratio between 1 and 1À5 whilst being heated to 140-320 ‹ C. for a duration of 0À1 seconds to 5 minutes. The filaments receive a second stretch on rollers (6) and (7) or wind-up roller (8) with or without heating at stretch rates such that the overall stretch ratio is from 1À2-4À0. The heating and stretching is readily accomplished by using heated rollers after the extrusion. The stretch ratio is then governed by the relative speeds of the rollers. The extrusion and the first and second stretching are notwithstanding the heating, performed at a temperature in the neighbourhood of room temperature.
Patent GB-664365-A (GB)
IPC: D21F1/02
Abstract: 664,365. Paper-making machines. BLACKCLAWSON CO. July 23, 1948 [July 23, 1947], No. 19737/48. Class 96. In supplying pulp to the wire 10 of a Fourdrinier paper-making machine, the pulp is passed at low velocity and in opposite streams through transverse conduits 20 and 21 and then through a slot 25 along and common to them so that the streams are merged, accelerated and diverted along the travelling direction of the wire, the direction of the flow being preserved and its velocity maintained or accelerated by conducting the resulting stream along a passage 30, Fig. 1. The conduits 20 and 21 may lie at right angles to the latter which may be throttled continuously, as by converging its walls 31 and 32 at an angle of not more than 5 degrees. The pulp may be supplied to the conduits 20 and 21 in streams flowing at right angles to them, e.g. through pipes 15 and 16, Fig. 3, joining extensions 28 and 29 on the conduits. The latter may taper in the direction of flow through them and may be constructed as disclosed in Specification 646,435.
Patent GB-708969-A (GB)
Abstract: 708,969. Gyroscopic apparatus. KELVIN & HUGHES, Ltd. Dec. 12, 1952 [Dec. 18, 1951], No. 29616/52. Class 97(3) Gyroscopic apparatus comprises a gimbal ring, a rotor mounted for rotation with respect to said ring about an axis, an eddy current member attached to the rotor and symmetrical about said axis, a member pivotally mounted on the' gimbal ring about an axis, a permanently magnetized body carried by the pivotally mounted member and situated adjacent to the eddy current member so that a torque varying with 'the angular velocity of the rotor is applied in one direction to the pivotally mounted member, means urging the pivotally mounted member in the opposite direction, an indicator and actuating means enabling the pivotally mounted member to actuate the indicator to indicate when the rotor angular velocity attains a pre-determined value (e.g. zero). The rate of turn and slip indicator shown comprises a case 50, Fig. 1, in which a gimbal 11 is journaled in bearings 52, 53, this gimbal mounting a spindle 56 for a rotor 10. The spindle is journaled in bearings 57, 58, Fig. 4, of which bearing 57 is mounted in a cap 63 and has pressure applied thereto by a spring 64 to take up any slack. A sleeve 66 on spindle 56, carries the armature laminations of the rotor motor 67 and the armature winding 68, and the rotor 10 is threaded thereon, this rotor carrying at one side an eddy current ring 77 of copper and on the other side a plate 75 supporting the usual speed governor elements. Bolts 80, 81, in.gimbal 11 carry the brushes of a commutator 71 and also a permanent magnet 84 providing the motor field. The North Pole of this magnet lies nearer an indicator plate 18 Fig. 1, on the front of the case. Pivoted to gimbal 11 is a U-shaped stirrup 27, Figs. 1 and 5, which embraces the rotor and is held in balanced position by a weighted arm 30 so that each leg makes an angle (e.g. 45 degrees) with the plane passing through the rotor axis and the North Pole of magnet 84. Attached to the base of the stirrup so as to be adjacent the eddy current ring. 77 and have its South Pole nearer the North Pole of the magnet 84 is a permanent magnet 29, Fig. 5. Stirrup 27 also carries an arm 34 adapted to engage a projection from the upper edge of a flag 23 pivoted to the indicator plate 18 and restrained by a spring to a position in which the word "OFF" on the flag does not appear in an aperture 26 in a plate 18. When the rotor is not spinning at its' proper speed, inter-action of magnets 29, 84, causes movement of the stirrup so that arm 34 strikes flag and moves it to its " OFF " position. But the interaction during normal spinning between magnet 29 and the eddy current ring 77 is such as to cause the stirrup to move rearwardly causing disconnection of arm 34 and flag 23 and thus allowing movement of this flag to its normal " ON " position under the action of spring 25. Rate of turn is indicated by a pointer geared to the gimbal and moving over a scale on plate 18, and slip is indicated by a ball mounted in a glass tube housed in a recess in plate 18.
Patent GB-2000256-A (GB)
Title: Sifting machine
IPC: B07B1/42
Filed: 1978-06-06
Abstract: A sifting machine in which the screen is supported on leaf springs to which oscillation is applied at two points spaced symmetrically with respect to the centre of the screen so as to obtain a uniform sifting action.
Patent GB-2025817-A (GB)
Title: Rolling Mill Drive Shaft Arrangement
IPC: B21B35/14
Filed: 1978-07-25
Abstract: A rolling mill for rolling solids of revolution, e.g. a ball rolling mill, comprises a working stand (1) with rolls (6) arranged at a preset angle of rolling, and a pinion stand (3) the output shafts (13, 14) of which are connected with the rolls (6) of the working stand (1) by means of spindles (2) whose ends are provided with universal joints (17, 18). The angles of obliquity (???) of the spindles (2) are similar for all the joints of the spindles. The axes of the output shafts (13, 14) of the pinion stand (3) are equidistant from the axis of rolling (II-II). There is provided a formula to determine the relationship of the pinion stand (3) with the working stand. <IMAGE>
Patent GB-2006255-A (GB)
Title: Solutions of cleaning agents containing alkyl oxyethylene sulphate
IPC: C11D1/29
Filed: 1978-09-27
Abstract: Aqueous solutions of cleaning agents contain at least 5% by weight of electrolyte and also an alkylglycol sulphate of the formula  R-O-CH2-CH2-O-SO3M in which R denotes an alkyl radical having 3 to 7 carbon atoms and M denotes Na or K, and optionally from 0.1 to 7% by weight of a surface active agent. The solutions are principally used as industrial cleaners. The sulphates replace conventional hydrotropes, for high electrolyte concentrations.
Patent GB-2010298-A (GB)
Title: Improved gum composition for lithographic plates
IPC: C08L5/04
Filed: 1978-10-18
Abstract: An aqueous gum composition for lithographic printing plates contains (a) water, (b) dextrine, sterabic, stractan, alginate, polyacrylic acid, hydroxyethyl cellulose, polyvinylpyrollidene, polyacrylamide, methyl cellulose, hydroxypropyl cellulose, hydroxymethyl cellulose or carboxyalkyl cellulose salt, (c) citric, oxalic or phosphoric acid or sodium monobasic phosphate, (d) sodium lauryl sulphate and (e) as solvent ethylene glycol, n-butyl acetate, glycerine or polyethylene oxide.
Patent GB-2007567-A (GB)
Title: Unidirectionally Torque- Applying Wrench
IPC: B25B21/00
Filed: 1978-11-02
Abstract: A unidirectionally torque- applying wrench includes a holder 12 which may be in the form of a ring spanner or an open-ended spanner. A lever 13 is pivoted to the holder and when moved in one direction engages an object to be turned either directly or via a slide 18. The object is released when the lever is moved in the opposite direction. The holder 12 and the lever 13 with or without the slide 18 may be used as a hand tool or a drive unit 27,28 may be used to apply torque to the object and the drive unit may be hydraulically operable. A reaction lever 15 is pivoted to the holder 12 or to the lever 13 radially inward of the pivot 14 between the lever and the holder. The space between the drive unit and the reaction lever 15 is taken up by elastomeric material for safety. <IMAGE>
Patent GB-2012626-A (GB)
Title: Oil separator
IPC: F25B43/02
Filed: 1978-12-19
Abstract: The oil separator (4) comprises at least one cylindrical separation chamber (8) having an open end which is closed by gas permeable means (12), a gas conduit (9) which communicates with the interior of the or each separation chamber (8) and which extends tangentially of the internal cylindrical wall of the latter, and an exhaust passage (11) which communicates with the or each said interior. In operation, an oil-containing gas, e.g. gaseous refrigerant from a compressor, supplied to the or each chamber (8) by way of the tangential conduit (9) is subjected to centrifugal force, so that oil passes out of the or each chamber (8) through the gas-permeable means (12) and gas is exhausted through the passage (11). In a modification, oil is discharged through a pipe extending from a lower closed end of the separation chamber and gas with entrained oil is exhausted through gas permeable means at an open top end of the chamber. <IMAGE>
Patent GB-2012411-A (GB)
Title: Gas Operable Water Heater
IPC: F23N3/04
Filed: 1979-01-19
Abstract: A gas operable water heater, such as a central heating boiler, has a heat exchanger 11 mounted in a flue 12 and a damper 13 positioned in the flue downstream of the exchanger is displaceable to close the flue except when the main burner 10 is to be ignited. In one embodiment Fig. 1, the damper is opened in response to a demand for heat from thermostat 1, so that gas is supplied to a pilot burner 6 and, when a flame is detected by means 8, to a main burner. In an alternative embodiment, Fig. 2 (not shown) in response to a demand for heat gas is supplied to the pilot burner and a temperature responsive means such as bimetallic strip 25, heated by the ignited pilot burner causes the damper to open the flue causing gas valve 28 to be unheated, and when a pilot flame is detected valve 9 is opened and gas is supplied to the main burner. <IMAGE>
Patent GB-2029132-A (GB)
Title: Vehicle with means for indicating brake operation
IPC: B60Q1/44
Filed: 1979-03-05
Abstract: A motor road vehicle has front and rear brake lights 13, 14 which radiate visual signals forwardly and rearwardly from the vehicle whenever a brake of the vehicle is actuated. <IMAGE>
Patent GB-2016414-A (GB)
Title: Magnetic tape reel holder or cassette
IPC: G11B27/34
Filed: 1979-03-05
Abstract: A magnetic tape holder or cassette (1) has a window 3 for observing the winding of the tape on a pair of spindles mounted in holes (2), wherein the window (3) is covered by a transparent screen 4 which has a graduated scale (5) thereon in the form of a series of curvilinear indices (6), the distance between which decreases and whose radii of curvature increase outwardly from one of the spindles. <IMAGE>
Patent GB-2022861-A (GB)
Title: Rear Projection Screen
IPC: G03B21/60
Filed: 1979-03-09
Abstract: A rear projection screen 12 comprises a lens formation 14 for refracting light projected onto the rear of the screen and displaying the refracted light as an image on the front of the screen, mask 16 provided on the screen for reducing reflection of ambient light and a diffusing layer 15 for diffusely transmitting the light projected through the screen via the openings of the mask. The diffuser may be applied to the lens formation or be on a separate sheet secured to the formation. There may be two lens formations at right angles. The diffuser increases the angle of viewing and reduces reflection of ambient light. <IMAGE>
Patent GB-2017557-A (GB)
Title: Tool for Rotation of Objects
IPC: B25B13/10
Filed: 1979-04-06
Abstract: Pins 4 which conform to the shape and size of the object when the tool is placed over the object, e.g. a knob, handle, key, nut or bottle top, are urged outwardly through a plate 3 by a resilient body 6. <IMAGE>
Patent GB-2018601-A (GB)
Title: Surgical cutting apparatus
IPC: A61B17/00
Filed: 1979-04-25
Abstract: An instrument for the cutting of material, particularly vitreous material comprises a first elongate hollow member 23 having a lateral aperture 25 delimited by a first cutting edge 26, and a second elongate hollow member 24 having a second cutting edge 27, the second member being situated in the first member and being longitudinally displaceable relative thereto so as to cause the edges to cut material positioned between them. The instrument may include a controllable vacuum inlet 29 so that the portion of the material to be cut off may be sucked into the instrument before cutting, may include a purging fluid inlet 33 and may also include an infusion fluid inlet 31. <IMAGE>
Patent GB-2032410-A (GB)
Title: Plant Growing System
IPC: A01G31/00
Filed: 1979-07-25
Abstract: A process and apparatus for growing crops using a nutrient film technique in which a permeable mass of resilient elements is used as a plant support medium. The elements may be formed by shredding or sitting plastics film or sheet, the film or sheet preferably being metallised.
Patent GB-2033534-A (GB)
Title: Combined elastomeric spring and fluid damper
IPC: F16F13/26
Filed: 1979-10-08
Abstract: A spring/damper comprises inner and outer members (12, 14) connected by an elastomeric shear spring (16) and having a main fluid chamber (26) defined therebetween which communicates with a second fluid chamber (36) in the inner member through a restricted orifice (40). There is an elastomeric bladder (42) within the second fluid chamber which is chargeable with gas. There may also be axially-spaced circumferential wear rings (60) on the bladder (42) to minimize bladder abrasion against the inner wall of the inner member (12). An elastomeric ring (64) attached to the inner member (12) within the main fluid chamber engages the outer member when the damper bottoms out and this seals the restricted orifice (40) against flow of fluid therethrough from the main fluid chamber (26) to the second fluid chamber (36). The restricted orifice (40) includes an elastomeric restrictor having a yieldable flap (130) covering a passage (112) for blocking flow therethrough in one direction while providing flow in a reverse direction. <IMAGE>
Patent GB-2062643-A (GB)
Title: Contraceptive Polypeptides
IPC: A61K38/00
Filed: 1979-11-07
Abstract: A compound of the formula       R1-R2-R3  or       R1-R12-R13-Pro-R14 or a pharmacologically acceptable salt thereof, wherein R1 is selected from D- Ser-Arg, Ser-Arg and Arg; R2 is selected from Tyr-Gly-Lys-Pro-Val-Gly-Lys- Lys, Ala-Tyr-Pro-Thr-Pro-Ala-Arg-Ser- Lys, Tyr-Gly-Lys-Pro-Val-Gly-Lys-Lys- Lys, Tyr-Gly-Lys-Pro-Val-Arg-Ser-Lys- Tyr-Gly-Pro, Tyr-Gly-Pro-Val-Gly, Val- Leu-Pro, Val-Leu-Val-Gly, Ala-Tyr-Pro, Leu-Pro-Gly-Pro, Val-Leu-Gln-Gly, Ala- Tyr-Pro-Arg-Leu-Pro-Gly, Ala-Tyr-Pro- Arg-Val-Leu-Gln-Gly and Ala-Tyr-Pro- Arg-Val-Leu-Pro; R3 is selected from Val-NH2, Val, Lys-NH2, Lys, Thr, Thr-NH2, Ser, Ser-NH2, Pro and Pro- NH2; R12 is selected from Tyr, Ala, Val and Leu; R13 is selected from Gly, Tyr, Leu and Pro; and R14 is selected from Val, Val-NH2, Pro-NH2, Gly, Thr, Thr- NH2, Val-Gly-Val, Val-Gly-Val-NH2, Val- Gly-Pro-NH2, Val-Gly-Gly, Val-Gly-Thr and Val-Gly-Thr-NH2.