baber/WOPTO huggingface dataset:
Patent GB-521883-A (GB)
Title: Improvements in or relating to the isolation of minerals
IPC: B03B1/04
Filed: 1938-11-30
Abstract: 521,883. Separating solid materials. DU PONT DE NEMOURS & CO., E. I. Nov. 30, 1938, No. 34919. Convention date, Nov. 30, 1937. Addition to 501,655. [Class 82 (ii)] In separating mineral, such as coal, from gangue, the material is first wetted with an aqueous solution of an active agent such as an emulsoid colloid or a glucoside, then washed with water, if desired, and the components are finally separated by immersion in a parting liquid which is immiscible' with water and has a specific gravity between that of the mineral and that of the gangue. The aqueous solution may contain 0À05 to 1À0 per cent. of active agent. The washing water may be collected and solids separated therefrom, additional active agents being then added to the water for use in wetting further mineral. The parting liquid, such as a halogenated aliphatic hydrocarbon, may be covered with water into which the mineral and gangue are introduced. Long lists of alternative active agents and parting liquids are given.
Patent GB-878721-A (GB)
Title: Helicopters
Inventor: SHAW RONALD ANDREW
IPC: B64C27/18
Filed: 1958-10-31
Abstract: 878,721. Convertible aircraft. POWER JETS (RESEARCH & DEVELOPMENT) Ltd. Jan. 12, 1960 [Oct. 31, 1958], No. 34961/58. Class 4. A helicopter comprises a lifting rotor 2 with tip jet propulsion units 5, a ducted fan jet propulsion system 7 for forward thrust, and a gas producer 36, which may supply compressed gas either to the rotor jet units 5 or to drive the ducted fan 7. An auxiliary compressor constituting the gas producer 36 is driven by a gas turbine 34 and directs gas through a duct 37 to the rotor pylon where a valve 41 is provided to direct the compressed gas either to the rotor jet units 5 for lift or to the volute 21 of the ducted fan for forward flight. The volute 21, which encircles the open-ended duct 6, directs the compressed gas past the turbine nozzle vanes 22 into the turbine rotor blades 20, which are fast with the ducted fan rotor blades 12. Air is drawn in from the forward end of the duct 6 around a fairing 15, and is discharged rearwardly past the ducted fan stator blades 13 after which it combines with the gas from the turbine blades and produces forward thrust on the helicopter. On take-off and landing and in hovering flight, the valve 41 is set so that the compressed gas is supplied only to the tip jet units 5. A further rotor or a ducted fan, driven by gas supplied through a branch pipe 42 from the auxiliary compressor 36, may be mounted in the tail to effect directional control of the helicopter. In an alternative arrangement, Fig. 3 (not shown), two auxiliary compressors may be used to supply compressed gas to two ducted fans, the latter being mounted either side-by-side in parallel ducts in the rotor pylon or on the stub wings 4.
Patent GB-941098-A (GB)
Title: Improvements in relating to overshoes
IPC: A43B3/16
Filed: 1961-09-29
Abstract: 941,098. Overshoes. R. K. MATTHEWS. Sept. 29, 1961, No. 35001/61. Heading A3B. An overshoe comprises inner and outer walls 3, 1 of rubber or plastics material defining an inflatable airspace 4 therebetween, and has a recess 12 to accommodate t h e heel 13 of the wearer's shoe 14. Walls 1 and 3 are secured together at the top, to form a strap 7 which constricts the upper end of the overshoe, and below the ankle. The overs h o e is inflated through valve 6, and may then be constricted by cords 10. The space 4 may be annular as in Fig. 3, or walls 1 and 3 may be connected by a flexible strip 2 and the edges of the outer wall drawn together by fastening means 15. The parts of the overshoe are joined by welding or by adhesive. The outer wall may be moulded and have elastic bands for stiffening. The fastener may comprise a sliding clasp fastener.
Patent GB-779864-A (GB)
Title: Improvements relating to control means for electric flatirons
IPC: D06F75/26
Filed: 1953-12-17
Abstract: 779,864. Steam irons. GENERAL ELECTRIC CO. Dec. 17, 1953 [Dec. 17, 1952], No. 35202/53. Class 138 (2). An electric steam iron comprises a control lever 30 for turning a control shaft 25 whose lower end is connected to a temperature-adjusting member (Fig. 1, not shown), the lever 30 projecting through an opening 35 in a tubular front handle post 5, a control knob 57 for moving a valve stem 20 for a water control valve (not shown), the knob 57 being positioned in an opening 58 in the top wall 6 of the post 5, a yoke 50 having an arm 49 connected to the knob 57 and an arm 48 connected to the valve stem 20, spring means biasing the valve towards one position, and means 59 carried by the yoke adapted to engage a wall 60 of the tubular post for holding the valve in another position. The arm 48 has a boss 52 engaging a washer 44 on the stem 20, this washer being biased upwardly by two springs 45, 54 and the stem 20 being provided with retaining rings 46, 56 for the washer 44 and spring 54 respectively. The shaft 25 passes through an opening 51 in the arm 48 and engages a slot 34 in a flat circular boss portion 32 of the lever 30. The boss 32 is surrounded by a flange 33 and engages in an opening 40 in a temperature indicating plate 38. A slot 61 in the flange 33 co-operates with a lug 62 on the yoke 50 to prevent raising of the knob 57 to open the water valve unless the lever 30 is at the correct temperature setting for steam ironing and to lock the lever 30 at this setting when the valve is opened (Fig. 1, not shown). In a modification (Fig. 7, not shown) the lower arm of the yoke is in the form of a spring arm and bears directly on the upper end of the valve stem. Specifications 628,090 and 637,458, [Group XXXVII], are referred to. Reference has been directed by the Comptroller to Specification 718,861.
Patent GB-387087-A (GB)
Title: Improvements in television
IPC: H04N3/34
Filed: 1931-12-21
Abstract: 387,087. Television. ARDENNE, M. VON, 19, Jungfernstieg, Lichterfelde-Ost, Berlin. Dec. 21, 1931, No. 35262. Convention date, Dec. 22, 1930. [Class 40 (iii).] In television employing cathode ray scanning, the frequency applied to the deflecting condensers to produce a line is not an integral multiple of the frequency applied to the other deflecting condensers to traverse the lines over the picture. As a result, the elemental lines A, into which the picture is divided, are displaced in successive scannings 1, 2.
Patent GB-155279-A (GB)
Title: Improvements in and relating to laying gears in particular for ordnance
IPC: F41A27/26
Filed: 1920-12-15
Abstract: 155,279. Krupp Akt.-Ges., F. Aug. 18, 1916, [Convention date]. Void [Published under Sect. 91 of the Act]. Mountings. - Relates to hydraulic gun-laying apparatus, and consists in actuating the controlling s l i d e - valves C, D by a member P which, after being displaced to start the laying movement, is automatically returned to inoperative position whilst the laying movement is being carried out. When the invention is applied to elevating-gear, the gun cradle A<1> trunnioned at a<2> in a carriage B carries a distantly-controlled range receiver T, and an electric motor R started by hand but automatically stopped by the receiver T when the desired movement has been made. To lower the breech end of the gun, the motor R, driving through a toothed sector Q loosely mounted on the gun trunnion a<2>, raises the member P and permits a spring J to open the valve C and thereby admit pressure to the hydraulic apparatus (not shown) which moves the gun. The movement of the gun tends to cause the return of the member P which return however is not effected until the motor R stops. The return of the gun to the horizontal or loading position is effected by starting the motor R in the opposite direction the member P being then lowered so as to permit a spring K to open the valve D. The motor R is stopped just before the loading position is reached, the subsequent movement of the gun acting to restore the sector Q and member P to the position shown.
Patent GB-762158-A (GB)
Title: Production of terpolymers
IPC: C08F212/06
Filed: 1954-12-07
Abstract: Clear terpolymers of (a) styrene, vinyl toluene or vinylxylene and (b) two different monomers selected from acrylic and methacrylic acids, methacrylonitrile, the mono- and dialkyl fumarates and the monoalkyl maleates, are prepared by a free-radical-initiated batch polymerization, to at least a 20 per cent conversion, of a monomer mixture selected from the area that gives clear terpolymers lying on or about (i.e. within 5 per cent of) the line joining the polymerization azeotrope composition of (a) and the first selected monomer to the polymerization azeotrope composition of (a) and the second selected monomer as plotted upon an equilateral triangular co-ordinate graph.  The polymerization azeotrope compositions are those which give interpolymers containing the same relative proportions as the initial monomer mixtures.  The alkyl groups referred to may be methyl, ethyl, n-propyl, iso-propyl, n-, sec.-, and tert.- butyl and monomers selected from (b) may be esters of the same acid differing only in the alkyl group.  In examples: mixtures of styrene methacrylic acid and diethyl fumarate or methacrylonitrile are polymerized by heating in three stages. Graphs are given.  The polymerization may be carried out in mass, in suspension in water, using suspending agents such as tricalcium phosphate and carboxymethylcellulose (which may yield pearls), or in emulsion using a redox-catalyst and an emulsifying agent such as a salt of a sulphonated longchain alkyl aromatic compound or a condensation product of ethylene oxide and a longchain aliphatic alcohol or mercaptan.  The term batch polymerization includes the addition of the monomers in fixed proportions to a continuous system, e.g. a series of vessels.  Catalysts mentioned are hydrogen, benzoyl, di-t-butyl, and diacetyl peroxides; t.-butyl and cumene hydroperoxides; diethyl peroxycarbonate, potassium persulphate and perborate; a ,a 1 - azodiisobutyronitrile, p - bromobenzenediazonium fluorborate, N-nitroso-p-bromoacetanilide, azomethane, phenyldiazonium halides, diazoaminobenzene, p-bromobenzenediazonium hydroxide and p-tolyldiazoaminobenzene.  Heat alone or ultra-violet light, if desired in the presence of a photo-sensitizer such as an organic disulphide, may also be used.
Patent GB-1357852-A (GB)
Title: Process for the preparation of 1,2,4-triazin-5-ones
IPC: C07D253/07
Filed: 1972-07-28
Abstract: 1357852 1,2,4-Triazin-5-ones BAYER AG 28 July 1972 [29 July 1971] 35412/72 Heading C2C  Novel 1,2,4-triazin-5-ones having the general formula wherein R<SP>1</SP> is hydrogen, optionally substituted alkyl, alkenyl, alkynyl, cycloalkyl, hydroxyl, alkoxy, aryl or optionally substituted aralkyl; R<SP>2</SP> is hydrogen, optionally substituted alkyl, alkenyl, cycloalkyl, optionally substituted aryl, optionally substituted aralkyl or a C-bonded heterocyclic ring and R<SP>3</SP> is optionally substituted alkyl, alkenyl, cycloalkyl, optionally substituted aryl or optionally substituted aralkyl, are prepared by a process for the production of such triazine-5-ones wherein R<SP>1</SP> may additionally represent a group of the formula wherein R<SP>4</SP> is hydrogen, or (C 1 -C 4 ) alkyl and R<SP>5</SP> is hydrogen, alkyl, haloalkyl, phenyl, alkylphenyl, alkoxyphenyl, alkylmercaptophenyl or optionally substituted phenylalkyl, or R<SP>4</SP> and R<SP>5</SP>, together with the nitrogen atom to which they are attached, form a 5- or 6-membered heterocyclic ring, and which comprises reacting a diazabutadiene of the general formula in which R<SP>6</SP> is chlorine or alkoxy, with a compound of the formula at a temperature of from 0 to 150 C. in the presence of an acid-binding agent and optionally in the presence of a diluent. The diazabutadienes may be prepared by reacting a glyoxylic acid ester 2-acylhydrazone of the general formula  wherein R<SP>7</SP> is hydrogen or (C 1 -C 4 ) alkyl, with a chlorinating agent at a temperature of from 0 to 100 C. and optionally in the presence of a solvent. The glyoxylic acid ester 2-acylhydrazone may in turn be obtained by reacting a glyoxylic acid ester of the formula with an acylhydrazine of the formula in the presence of an organic solvent and an acid catalyst at a temperature of from 50 to 130 C. The novel compounds possess biocidal properties.
Patent GB-1184186-A (GB)
Title: Improvements relating to the manufacture of Electrical Circuit Components
Inventor: FERN WALTER JAMES
IPC: H01G4/224
Filed: 1966-08-09
Abstract: 1,184,186. Capacitors; resistors. ELECTRIC & MUSICAL INDUSTRIES Ltd. 8 Aug., 1967 [9 Aug., 1966], No. 35512/66. Headings H1M and H1S. Stoppers 4, 5 are threaded on to leads 2, 3 extending from opposite ends of rolled capacitor (or resistor) body 1 until they abut the body, and sheath 6 is then heat-shrunk on to the body to grip the stoppers. The sheath may be P.V.C. and the stoppers P.V.C., P.T.F.E. or nylon. The stoppers may have grooves or dimples to improve the grip of the sheath, or may be tapered or heat-welded to the sheath. The sheath may cover the ends of the stoppers, and may be coloured to indicate capacity. The capacitor may be wax-impregnated.
Patent GB-1335337-A (GB)
Title: Windscreen wiper installation
IPC: B60S1/24
Filed: 1972-07-31
Abstract: 1335337 Windscreen wipers SWF-SPEZIALFABRIK FUER AUTOZUBEHOER GUSTAV RAU GmbH 31 July 1972 [31 July 1971] 35661/72 Heading A4F A vehicle windscreen wiper installation comprises a trough 10 mounting and accommodating a wiper motor 11, end parts of wiper shaft bearings 13, 14, and a wiper linkage 15 to 20 Figs. 1 and 3 (not shown) in its interior, the trough being mounted on a vehicle body 24 with the interposition of a sealing member, e.g. a grooved rubber ring 23. The trough 10 has brackets 25 Fig.1, (not shown) welded thereto and attached by bolts to the body 24.
Patent GB-746677-A (GB)
Title: Die arrangement for extrusion presses
IPC: B21C25/08
Filed: 1953-12-23
Abstract: 746,677. Extruding. HYDROPRESS, Inc. Dec. 23, 1953 [Jan. 2, 1953], No. 35688/53. Class 83 (4). An extrusion press for producing articles having different outside shapes along predetermined longitudinal sections has at least two extrusion dies 30, 31, 32 nested inside one another, the die or dies other than the outermost die being releasable and being held each in their operative positions by a set of locking plates 40, 42, each set comprising two groups of co-operating recessed locking plates arranged to be moved alternately into and out of their locking positions, the recesses in the plates of each group being complementary to each other to define a central opening, the plates of one group having deeper recesses than those of the other group whereby the former group when in locking position support their respective die whilst the other group when in locking position permit release of this die but form a support for the next outer die or dies. A billet 12 in a container 11 is first extruded by a ram 10 between a mandrel 22 and the inner die 30. The latter is supported by a sleeve 33 which abuts against a pair of vertically slidable plates 40 defining a central opening 50. For releasing the die 30, the plates 40 are withdrawn by hydraulic rams 61 and are replaced by a pair of horizontally slidable plates 41, Fig. 5A, providing a larger opening 51, whereby the die and its sleeve are released and carried to the left by the extruded product 25. Extrusion then takes place through the intermediate die 31 which is supported by a sleeve 34 abutting against a pair of vertically slidable locking-plates 42 defining a central opening 52, which are subsequently withdrawn by further ram 61 and are replaced by a pair of horizontally slidable plates 43, Fig. 5B, providing a larger opening 53. The final extrusion takes place through the outer die 32.
Patent GB-838279-A (GB)
Title: Improvements in electromagnetic flow meters
IPC: G01F1/60
Filed: 1958-11-06
Abstract: 838,279. Measuring fluid flow. KABUSHIKI KAISHA HOKUSHIN DENKI SEISAKUSHO. Nov. 6, 1958 [Nov. 16, 1957], No. 35695/58. Class 37. In an induction flowmeter of the type in which the flow of the fluid 1 through a transverse magnetic field produces a voltage at 2, 3 across the fluid, the measuring circuit is responsive to the ratio between the induced voltage at 2, 3 and a reference voltage developed across a resistor 6 connected in series with the coils 4, 5 producing the field. By this means the reference voltage automatically varies to compensate for changes in the coil current due to changes in the voltage or frequency of the supply source 7 or the resistance of the field coils. The comparison device may be in the form of a self-balancing bridge (Fig. 2, not shown), or a crossed coil ratiometer.
Patent GB-1267981-A (GB)
Title: A method of polymerizing vinylchloride
Inventor: BJERKE ODD JOSTEIN
IPC: C08F114/06
Filed: 1969-07-16
Abstract: 1,267,981. Polymerizing vinyl chloride. FOSTFATBOLAGET A.B. 16 July, 1969, No. 35787/69. Heading C3P. In the aqueous suspension polymerization of vinyl chloride, aluminium hydroxide is precipitated in the reactor during or after the polymerization. The polymer product has improved insulating properties, 0.001-0.05% of aluminium hydroxide (calculated as aluminium) based on the monomer is precipitated.
Patent GB-329816-A (GB)
Title: Improved apparatus for enabling the imprisoned crew of a sunken submarine to reach the surface of the water
IPC: B63G8/41
Filed: 1929-08-21
Abstract: 329,816. Griebenow, W. Aug. 21, 1929. Buoyant lifesaving g chambers.-In lifesaving means for submarines of the type in which a detachable buoyant chamber is arranged in a rigid chamber built into the submarine, guiding means are provided comprising plungers 20 on the buoyant chamber 4 and cylinders 21 in the rigid chamber 1; compressed air may be admitted to the cylinders to eject the chamber 4, and such air may be automatically supplied through valves 22 operated by spring-pressed rods 24 when sufficient water has been admitted to the chamber 1 through a pipe 12 to float the chamber 4. The chamber 1 has a detachable cover 3 held by hooks 10 controlled by handles 11; an air escape valve 29 is also provided and is operated by hand, or automatically after a given amount of water has entered the chamber 1. The chamber 4 has an air inlet valve 31 and is provided with oxygen cylinders, drinking water and a supply of foods.
Patent GB-1445659-A (GB)
Title: Method of etching silicon oxide to produce a tapered edge thereon
IPC: H01L23/485
Filed: 1974-08-15
Abstract: 1445659 Etching RCA CORPORATION 15 Aug 1974 [20 Aug 1973] 35976/74 Heading B6J [Also in Division H1] A selected portion of a layer 18 of silicon dioxide on a substrate 12 of silicon having a doped area 14 is etched away so as to delineate the area 14 by (a) applying a layer 20 of photoresist to the layer 18, (b) exposing and developing the layer 20 and removing it from the delineated area, (c) etching with a liquid comprising an etchant such as hydrofluoric acid and ammonium fluoride and an agent for raising the layer 20 at its interface with the layer 18 such as sulphuric acid, nitric acid, phosphoric acid or acetic acid, (d) stripping away the remaining resist. The effect is to produce a tapered formation 28.
Patent GB-505686-A (GB)
Title: Improvements in or relating to television transmitter cathode ray tubes
IPC: H01J29/45
Filed: 1937-12-30
Abstract: 505,686. Cathode-ray tubes. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Dec. 30, 1937, No. 36153. Convention date, Dec. 30, 1936. [Class 39 (i)] A screen for television transmission consists of a thin film of germanium or other material of high positive or negative thermo-electric power such as antimony or, bismuth; the apparatus is especially designed for the transmission of infra-red images, which are projected on the screen and scanned by a cathode ray ; the image signals are derived from a conductor connected to the metal film. In the arrangement shown the screen 2 consists of a film of germanium, transmitting about 1 per cent of the incident light, on a backing of mica. The border of the mica is platinized, or similarly coated, and enclosed in a metal frame connected by a conductor 23 to ordinary amplifying and transmitting means. The image to be transmitted is projected on to the screen 2 through a window 3 in the bulb 1 consisting of potassium chloride, quartz, rocksalt or some fluoride transparent to infra-red rays, the projecting system. 4 being of similar material. The screen is scanned by a projected ray from a cathode 5 with modulating electrodes and anodes of ordinary' type, including an anode costing 8 on the bulb.
Patent GB-1479974-A (GB)
Title: Semiconductor device manufacture
IPC: H01L29/808
Filed: 1974-08-16
Abstract: 1479974 Semi-conductor devices PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 16 Aug 1974 [21 Aug 1973] 36189/74 Heading H1K In a method of making a semi-conductor device such as a vertical FET, at least one dopant is introduced into a body 11 through a masking layer 10 having at least two apertures 12, 15 formed in the layer by the successive steps of forming at least one aperture 12, isotropically growing islands 14 within the aperture 12 to extend over the edge to form a collar 14B, removing the masking layer areas not covered by the collar 14B to form at least one other aperture 15 and then removing the islands 14. The resulting dams 16 may be less than 1 micron wide at the base when the masking layer areas are removed by plasma sputtering. For larger dimensions, chemical etching is used. As shown in Fig. 2h, a vertical structure FET includes buried gate regions 30 formed by ion implantation through a mask having frame-shaped apertures produced by the above method. The islands 14 may be of Ni grown by electroplating, the body 11 is of Si and the masking layer 10 is of SiO 2 . The FET is completed by providing electrodes 35-37 for the gate, source and drain respectively.
Patent GB-339770-A (GB)
Title: Silencers for fluid-pressure engines
IPC: G01C13/00
Filed: 1929-11-26
Abstract: 339,770. Bentley Motors, Ltd., and Tomlins, R. Nov. 26, 1929. Exhaust silencers.-Exhaust gases entering the silencer through pipe 5 pass into an expansion chamber 4 strike a conical spreader 8, and then return through pipes 10 with perforations 11 to a second expansion chamber 9. From this chamber they flow forward again through pipes 13 to a third expansion chamber 12 whence they are discharged through an outlet 15. The areas of the pipes and their perforations are such that no throttling of the gases occurs. The inlet ends of the pipes 13 may be open, or may be closed and the wall perforated.