baber/WOPTO huggingface dataset:
Patent GB-543686-A (GB)
Title: Improvements in and relating to apparatus for automatic control of power factor of an electrical circuit
IPC: H02J3/18
Filed: 1940-12-11
Abstract: 543,686. Automatic control systems. NEMET, A. Dec. 11, 1940, No. 17537. [Class 38 (iv)] Power factor.-Two gaseous discharge valves T 1 , T 2  are selectively ignited according to variations in the power factor of a load circuit respectively beyond certain leading and lagging values. The plate current of each valve energizes a relay or coil R 1 , R 2  to effect corrective adjustment of a condenser, inductance or synchronous condenser, for example by controlling a reversible motor. With plate voltages energized in fixed phase relationship to the circuit voltage (or current), control grids of the valves are energized through phase shifting transformers P 1 , P 2  with a voltage and fixed phase relationship to the load current (or voltage) and through phase shifters S 1 , S 2  with a voltage in fixed phase relationship-270 degrees lagging-to the circuit voltage (or current). Separate grids may be used in each valve but by using auxiliary rectifiers V, ... V 4  single grid valves may be employed. The correction is dependent on the load current since current transformers C T provide the ignition voltage. Specification 397,229 is referred to.
Patent GB-807495-A (GB)
Title: Improvements in devices for measuring and checking screw threads
IPC: G01B3/48
Filed: 1957-06-03
Abstract: 807,495. Gauging screw-threads. SVENSKA PRECISIONVERKTYG A.B. June 3, 1957 [June 14, 1956], No. 17548/57. Class 106 (2). A screw-thread gauge comprises two screwthreads 12, 22 formed on mutually rotatable bodies 10, 20 at the end of a tube 10 and spindle 18, the spindle being rotatable within the tube 10 to an initial position in which the two screw threads 12, 22 form a continuation, the one of the other and the spindle being formed with a coniform portion 28 urged by a spring 70 to bear against a coniform seat 30 in the tube 10. A clearance is allowed between the spindle 18 and tube 10 from the conical bearing 30 to a bearing 32 spaced a distance several times the diameter of the spindle. Relative rotation between the spindle 18 and tube 10 is limited by a pin 52 working in two diametricallyopposed notches 50 and is indicated by a main scale 78 on the tube 10 in co-operation with a vernier scale 76 on a hood 56, detachably connected to the spindle 18 by chuck means 61, 62, 64, which can be released to allow a zero adjustment to be made to eliminate errors due to wear.
Patent GB-965202-A (GB)
Title: Cigarette lighter
IPC: F23Q2/00
Filed: 1963-05-06
Abstract: 965,202. Cigarette lighters. H. ZAHN. May 6, 1963 [Feb. 18, 1963], No. 17744/63. Heading F4F. A petrol or gas cigarette lighter comprises an outer ground, electroplated and polished sleeve 14 adapted to be slid over the fuel tank 9 from the top and having an aperture through which the ignition mechanism projects. An inner sleeve 13 carrying the ignition mechanism is interposed between the outer sleeve 14 and the fuel tank 9. A polished bottom sleeve 17 is plugged-in between the sleeves 13, 14 to cover the bottom of the tank. A finger-piece 4 is connected at its rear end 5 to a web 6. When the finger-piece 4 is depressed, a gas outlet valve 11 is lifted via a rocker arm 12, and an extinguishing-cap holder mounted on a pin 2 of a friction wheel 3 is moved together with the friction wheel.
Patent GB-841948-A (GB)
Title: Improvements in or relating to methyl and ethyl mercuric 8-hydroxyquinolates and theproduction thereof
IPC: C07F3/10
Filed: 1956-06-08
Abstract: The invention comprises methyl- and ethyl-8-hydroxy-quinolates of formula:  <FORM:0841948/IV(b)/1> where R is methyl or ethyl.  They may be prepared by reacting a methyl or ethyl mercuric halide, acetate or hydroxide with 8-hydroxyquinoline or a soluble metal salt thereof (the metal salt being employed with the halide.  Reaction may take place in solution (e.g. in water or alcohol), or by grinding together in the dry state.  In the latter case when using 8-hydroxyquinoline itself a halogen acceptor such as sodium bicarbonate, sodium carbonate, sodium hydroxide, potassium bicarbonate, potassium carbonate, potassium hydroxide, magnesium oxide, calcium oxide or an organic base such as pyridine, piperidine, collidine, pipecoline or aniline should be present, an excess of the liquid base being avoided so as to keep the powder dry.  The active compounds may be used in fungicidal seed dressing compositions (see Group VI).ALSO:Fungicidal seed-dressing compositions comprise as active ingredient methyl- or ethyl-8-hydroxy-quinolinate of formula <FORM:0841948/VI/1> when R is methyl or ethyl and a liquid or solid diluent.  Liquid diluents specified include aqueous alcohol, n-propyl alcohol, ethylene glycol, methyl, ethyl and butyl "Cellosolves" (Registered Trade Mark) and their acetates and other esters, methyl, ethyl or butyl carbitols and their acetates, and acetone. If desired the preparation may comprise a methyl or ethyl mercuric halide, acetate or hydroxide mixed with 8-hydroxy-quinoline or a soluble metal salt (especially an alkali-metal or alkaline-earth metal salt) thereof, reaction taking place on adding a solvent (see Group IV(b)).
Patent GB-1385973-A (GB)
Title: Symbol display tube having an auxiliary electrode
IPC: H01J31/15
Filed: 1972-04-18
Abstract: 1385973 Display tubes WAGNER ELECTRIC CORP 18 April 1972 [25 Aug 1971] 17784/72 Addition to 1249935 Heading H1D The display tube of the Specification 1,249,935 is modified by providing an auxiliary electrode 17 insulated from and optically non-interfering with the anode display elements 16 and providing the filamentary cathode 18 in the form of at least first and second filaments or filament segments 18A and 18B spaced apart in a plane substantially parallel to the plane in which the said anode display elements are disposed. The anode elements 16A-16G and an optional decimal point 16H are conductive layers deposited on the inner surface of a dished support member 14 and covered with phosphor coatings. The auxiliary electrode 17 is deposited on the same surface surrounding but spaced from the anode elements, and controls the flow of electrons from the cathode which comprises two filaments 18A and 18B connected between pins 24 and 26 and the ends of a spring 23 attached to a pin 22. The filaments can be energized in series or in parallel. The auxiliary electrode may not be co-planar with the anode display elements, and the filamentary cathode may alternatively be arranged in a V or N- shaped array. The support member 14 is provided with an exhaust tube 30. A circuit for pulsing three tubes is described (Fig. 2, not shown).
Patent GB-545940-A (GB)
Title: Manufacture of polymeric materials
IPC: C08L61/10
Filed: 1940-12-18
Abstract: 545,940. Polyamide compositions. DU PONT DE NEMOURS & CO., E. I. Dec. 18, 1940, No. 17818. Convention date, Dec. 18, 1939. [Class 2 (iii)] A polyamide composition, particularly suitable for melt-spinning into bristles and suitable also for the production of films and for injection moulding, is prepared by incorporating with a fibre-forming synthetic linear polyamide a phenol-formaldehyde resin derived from a phenol containing at least one but not more than two substitutable positions ortho and para to phenolic hydroxyl. Incorporation may be effected by fusion or in a mutual solvent or by preparing the polyamide in presence of the phenol-formaldehyde resin. Plasticizers,- resins, cellulose derivatives, pigments, filters, dyes &c. may be added. Polyamides include interpolymers and ester-amide interpolymers. The phenol-formaldehyde resin is prepared by condensing the phenol with aqueous formaldehyde under reflux at a temperature of 85-90‹ C. for two hours in the presence of an acid catalyst, e.g. hydrochloric acid. As preferred phenols, those containing a para-substituted secondary or tertiary hydrocarbon radical or a substituent containing at least 4 carbon atoms in the ortho or para position to the phenolic hydroxyl are specified, in particular -p-tertiary-butyl phenol, p-hydroxydiphenyl, p-tertiary octyl phenol, p-cyclo-hexylphenol, o-cyclohexylphenol, ptertiary-amylphenol, p-tertiary-hexylpheriol, di(4-hydroxy-alpha-naphthol) methyl-ethylmethane, di(4-hydroxy-3-methylphenyl) dimethyl-methane and di(4-hydroxy-3-methylphenyl)ethylmethane. Examples are given of the preparation of compositions by heating with particular phenolic resins, (a) hexamethylene ammonium adipate or (b) hexamethylene adipamide and also by mixing a hot butyl alcohol solution of an inter-polymer derived from hexamethylene ammonium adipate and decamethylene ammonium sebacate with a hot butyl alcohol solution of a resin derived from p-hydroxydiphenyl. Specifications 461,236, 461,237 and 520,263 and U.S.A. Specifications 2,071,250 and 2,130,948 are referred to.
Patent GB-1337924-A (GB)
Title: Record medium carrying chromogenic material
IPC: B41M5/124
Filed: 1972-04-18
Abstract: 1337924 Pressure-sensitive recording sheet NATIONAL CASH REGISTER CO 18 April 1972 [30 April 1971] 17822/72 Heading D2B A pressure-sensitive record sheet comprises a sheet of paper or plastics material coated with dry water-insoluble, substantially chemically neutral, pigment particles having adsorbed thereon at least one substantially colourless basic chromogenic material capable of forming a coloured dye stuff when reacted with acidic material. Specified pigments include CaCO 3 , nO 2 , BaSO 4 , TiO 2 , BaCO 3 , MgCO 3 , CaO, ZnS, and Mg titanate. Specified dye precursors include Crystal Violet lactone, 3 - 3 - bis (1 - ethyl - 2 - methyl indol - 3 - yl) phthalide, 6' - chloro - 8' - methoxybenzo - indolinopyrylospiran, N - (2,5 - dichlorophenyl) lenc - auramine, N - phenyl - auramine, di - 4, 4' - [(diethylamino) phenyl] ketone, 3 - chloro - 6 - diethylamino - 2 - methyl fluoran, 6 - diethylamino - 1,2 - benzofluoran, and 2' - anilino 6' - diethylamino - 3' - methylfluoran. The acidic material, which may be a phenolic resin, may be encapsulated and carried on the same or a different sheet.
Patent GB-714122-A (GB)
Title: Improvements relating to safety razors
IPC: B26B21/22
Filed: 1952-07-15
Abstract: 714,122. Razors. HULVERSCHEIDT, H. July 15, 1952 [July 17, 1951], No. 17876/52. Class 30 A safety razor comprises three or more blades of the same dimensions disposed between transversely curved cover and guard plates and a transversely curved spacing plate between adjacent blades, the curvatures of the surfaces in contact with the blades increasing from the guard plate towards the cover plate so that the distances apart of the cutting edges of each blade decrease in this direction and the cutting edges are disposed in a plane, the curvature also being such that the edge portions of the blades, when viewed from the side, are parallel to one another on each side of the razor. As shown, blades 5, and interposed spacing plates 8, mounted on pins on a cover plate 2 are clamped against a guard 3 by screwing a handle' 4 on the centre pin of the cover plate. The curvature of greater than that of its lower side and is the upper side of each spacing plate is the same as the curvature of the lower side of the spacing plate next above. Inwardly curved portions 9 on the upper surface of each spacing plate and a corresponding outwardly curved portions 10 on the underside of each spacing plate and of the cover plate 2 render the projecting edge portions of the blades parallel. The invention may be applied to safety razors having hinged retaining members, in which case the spacing plates are also hinged to the razor, and in converting an existing razor when a spacing plate having the required curvature 10 is inserted beneath the cover plate.
Patent GB-786561-A (GB)
Title: Manufacture of terephthalic acid
Inventor: MCINTYRE JAMES ERIC
IPC: C07C51/29
Filed: 1954-06-18
Abstract: A process for the manufacture of terephthalic acid comprises oxidizing para-diacetylbenzene or para-acetylbenzoic acid by heating with an alkaline aqueous solution of a hypochlorite.  When para-diacetylbenzene is the starting material para-acetylbenzoic acid is formed intermediately.  In examples: terephthalic acid containing para-acetylbenzoic acid is obtained by treating para-di-acetylbenzene with warm, aqueous sodium hypochlorite solution, destroying excess hypochlorite with bisulphite, filtering off unchanged di-acetylbenzene and isolating the acidic product. Para-diacetylbenzene may be made from para-di-isopropylbenzene by oxidation with air.  Specification 770,521 is referred to.
Patent GB-1294595-A (GB)
Title: Preparation of polyalkenamers
Inventor: NUETZEL KARL
IPC: C08F4/78
Filed: 1970-04-15
Abstract: 1294595 Cyclomonoolefin polymerization catalyst FARBENFABRIKEN BAYER AG 15 April 1970 [15 April 1969] 17943/70 Heading C3P Cyclomonoolefins are polymerized by ring opening in the presence of a catalyst comprising an organometallic compound together with a further metal compound such as a transition metal halide or a Friedel-Crafts compound, in a solvent and in the presence of an aliphatic or aromatic nitrocompound. In examples, catalysts comprise Al(i-C 4 H 9 ) 3 , Al(i-C 4 H 9 ) 2 H, or W (alkyl)4, WCl 6  or TaCl 5 /various nitro compounds, e.g. nitrobenzene, 3,5-dinitrobenzoylchloride, 4 - nitroanisole, chloromethyl - (4 - chloro - 3- nitrophenyl) - sulphone, 1,5 - dinitronaphthalene, and 4,4 - dichloro - 2 - nitrodiphenyl ether.
Patent GB-126243-A (GB)
Title: Improved Ship Construction.
Inventor: NISBET JAMES
IPC: B63B3/08
Filed: 1918-11-02
Abstract: 126,243. Nisbet, J. Nov. 2, 1918. Sectional vessels.-In a ship built up of a number of transverse sectional floatable parts including a bow section, and a. stern section carrying the propelling machinery, the sections 1, 2, 3, 4, Fig. 1, are detachably connected together by means accessible from the deck, as indicated in Fig. 1, and the decks of all the sections are arranged to form collectively a single deck. The sections are formed with spigot and socket mating-parts 5, 6, Fig. 4, secured by screw-actuated cotters 7, 8. At the deck level, the cotters are driven in horizontally. The small masts and stays 12, Fig. 1, above the deck level constitute an additional means for connecting the sections.
Patent GB-1177138-A (GB)
Title: Saturated-Steam Generator for Steam-Cooled Nuclear Reactor
IPC: F22B1/14
Filed: 1967-04-19
Abstract: 1,177,138. Saturated - steam generators. LICENTIA PATENT - VERWALTUNGS - G.m.b.H. 19 April, 1967 [20 April, 1966], No. 18015/67. Heading F4A. In a saturated steam generator 1 constructed in the manner of a Loffler boiler, for steam cooled nuclear reactors, a plurality of water surfaces 11 are disposed one above the other in the generator. One or more steam outlet sockets 10 may be provided on the drum above each water surface. Plates may be disposed in steam guide channels to dry the steam. Steam outlet holes 9 in superheated steam supply tubes 6 may be provided in the lower surface of the tubes. Other embodiments are described.
Patent GB-463301-A (GB)
Title: Improvements in casting metal spoons, forks and like table ware
IPC: B22C9/06
Filed: 1935-06-24
Abstract: 463,301. Moulds. CELNIK & POWER, Ltd., CELNIK. Z., and POWER, A. E. June 24, 1935, No. 18090. [Class 83 (i)] Casting processes.-A mould for casting a spoon, fork, or the like comprises two parts 1, 2 aligned by lugs 3, 4, 5, at least one part having an adjustable leg 7 so that the mould can be stood at a considerable inclination to the horizontal during pouring. The gate 16 is arranged at the end opposite the thinnest parts of the casting and vents 10<a>, 15 are provided.
Patent GB-985358-A (GB)
Title: Austenitic iron base alloy
IPC: C22C38/54
Filed: 1963-05-08
Abstract: An age hardening austenitic iron base alloy for jet engine parts consists of: .C.up to 0.1%, .Mn.up to 2.0%, .Si.up to 0.25%, .Cr.14.0 -20.0%, .Ni.20.0 -30.0%, .Mo and/or W.1.0 - 3.0%, .Ti.2.75 - 3.75%, .Al.0.75 - 1.75%, .V.0.1 - 1.0%, .B.0.003 - 0.025%, the ratio of Ti to Al being at least 2 so that the gamma prime phase precipitate formed is stable against transformation to eta phase, and the balance of Fe with impurities such as P, S, N and O.  The alloy may be hot worked, solution treated at 1800-1900  DEG F. for 1-2 hours followed by oil or air quenching and ageing or precipitation hardening at 1300-1500  DEG F., e.g. for 16 hours. Specification 965,585 is referred to.
Patent GB-581106-A (GB)
Title: An improved scale graduating device
IPC: G01D13/12
Filed: 1944-09-23
Abstract: 581,106. Dividing engines. BRITISH INSULATED CABLES, Ltd., and THORPE, C. H. M. Sept. 23, 1944, No. 18205. [Class 97 (iii)] A dividing engine for marking graduations on scales comprises two members slidable transversely one of the other, one member having converging lines spaced according to some law and a base line, while the other has, an arm overhanging the first member with a retractable needle engageable with the base line and the converging lines and adapted to impart relative movement to the scale and marker. As shown, a table 2 slidable in a frame 3 is provided with grooves comprising a base line GO and converging lines while a member 4 slidable in guides 5 transverse to the guides 3 is provided with an arm 6 and retractable needle 7 and at its other end carries the scale past a marker 10. In operation, one end of the scale is brought, under the marker and the arm 6 and slide 4 adjusted so that the needle coincides with the base line GO. The slide 4 and scale thereon is moved to a position wherein the marker 10 is at the other end of the scale and the table is now slid along until. the needle 7 will coincide with a groove which represents the number of graduations to be marked on the scale. Movement of the slide 4 so that the needle 7 engages successive grooves on the table 2 enables the appropriate markings to be made on the scale. If the scale is a circular one, it is mounted on a spindle whose rotation is derived from the linear movement of the slide 4.
Patent GB-497958-A (GB)
Title: Improvements in or relating to the manufacture of composite wall board
IPC: C04B28/14
Filed: 1937-06-30
Abstract: 497,958. Composite wall board. SANDFORD, J. B., LEFEBURE, V., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. June 30, 1937, No. 18238. [Class 87 (i)] In the manufacture of composite wall board comprising a layer of water-setting cementitious material such as calcium sulphate plaster covered on both sides with relatively thin fibre liners such as pulp board, thick paper or cardboard, the liners are coated prior to contacting with the wet unset plastic with (a) an aqueous mixture of a water-setting cement or binder such as calcium sulphate plaster and a water soluble adhesive such as starch, dextrin, gum, glue, casein or ureaformaldehyde or thiourea-formaldehyde resin syrup, or (b) an aqueous mixture, with or without fillers such as sand or fine asbestos, of a soluble silicate and a substance capable of reacting therewith such as Portland cement, aluminous cement or zinc carbonate. Accelerators such as mineral acids or a catalyst such as phosphoric acid may be added to the resin syrup.
Patent GB-1016784-A (GB)
Title: Improvements in the measurement of the moisture content of specimens
Inventor: HALL LESLIE EDWIN
IPC: G01N22/04
Filed: 1962-05-11
Abstract: 1, 016, 784. Measuring moisture content. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. April 1, 1963 [May 11, 1962], No.18248/62. Heading G1N . The moisture content of a specimen 11 is measured using a "Magic-T" hybrid waveguide junction by applying short-circuited terminations to two opposed arms 1, 3, placing the specimen in one of these arms, 1, applying radio frequency energy to another arm 7, and varying the effective length and attenuation in arms 1 and 3 until the energy passing into the fourth arm 5 is substantially zero, the attenuation produced by the specimen being deduced from the attenuation applied to arms 1 and 3. Arm 1 has a fixed termination 13 and contains an attenuator 15, which need not be calibrated. Arm 3 has a movable plunger 19 and a calibrated attenuator 17. Arm 5 contains a fixed padding attenuator 23 and a probe 25 connected through diode 27 and amplifier 29 to meter 31. Arm 7 is coupled to a klystron operating in the 3cm. wavelength range. Attenuator 17 is initially set to zero with no specimen 11 in place and 19 is adjusted to give a zero output on meter 31. The attenuator 17 is calibrated using a series of known specimens, or a calibration chart is prepared. During each test, attenuator 17 and plunger 19 are adjusted to give a zero output. The attenuator and plunger may be combined in a single unit by providing a cylindrical waveguide section with an absorbing tapered vane fitted into an axially adjustable plunger. The vane is rotatable through 90 degrees relative to a fixed tapered vane, axial and angular movement being independent. Attenuators 15 and 17 may be interchanged.
Patent GB-265458-A (GB)
Title: Improvements in and relating to liquid brakes
IPC: G01G23/08
Filed: 1926-07-22
Abstract: 265,458. Fitzpatrick, H. D., (Maatschappij tot Vervaardiging van Snijmachines Volgens van Berkel's Patent en van Andere Werktuigen). July 22, 1926. Dash-pots.-In a liquid 'brake a dash-pot of the kind in which a longitudinal passage in the cylinder wall allows liquid to flow from .one side of a piston in the cylinder to the other and is provided with means to control the rate of flow of the liquid, a number of passages d are provided in the wall of the cylinder a and a single regulating member e arranged centrally of the cylinder is adapted to control the liquid flow. As shown, the piston b has a stem c connected at its upper end to an element to be controlled, such as a part of a weighing scale, and the member e is provided with perforations e' adapted to register with the upper ends of the passages d and is secured to a hollow stem g passing freely through a bush j in the cover a<2> of the dash-pot, a spring i pressing the member . e against the top of the cylinder a. By means of a handle h on the stem g, the member e can be rotated to control the openings to the passages d. An upper chamber a<1> is provided of such dimensions that if the dashpot is inverted the liquid will not be of sufficient depth in the chamber to overflow between the bush j and the stem g. Openings in the stem g and the member e ensure constant communication between the chamber a<1> and the cylinder. In a modification, the perforations e<1> in the member e are omitted and the member e and its stem are not rotatable but are raised and lowered for adjustment by co-operating cam surfaces on the handle and the stem.