baber/WOPTO huggingface dataset:
Patent GB-1074303-A (GB)
Title: Improvements relating to colour films
IPC: G03C1/76
Filed: 1964-08-14
Abstract: 1,74,303. Photographic sliver halide colour materials. E. I. DU PONT DE NEMOURS & CO. Aug. 14, 1964 [Aug. 14, 1963; Aug. 7, 1964], No. 33303/64. Heading G2C. A photographic multilayer colour film comprises a film support carrying a plurality of photosensitive gelatino silver halide emulsion layers each containing a colour-former, at least one of said colour-formers having colour-forming nuclei attached to structural units of a polymeric chain, there being present in at least one of the emulsion layers or in another gelatine layer (a) 0À01 - 2À5% (based on the weight of gelatine in the layer) of a compound forming bi-sulphite ions or a complex of such a compound with an organic carbonyl compound and (b) a photographic silver halide developing agent. The bi-sulphite ion and developer improve the latent image stability. Bi-sulphiteion-forming compounds and complexes are sodium or potassium sulphite, bi-sulphite or metabisulphite, an alkaline earth metal bi-sulphite, and complexes thereof with acetone, methyl ethyl ketone, formaldehyde and acetaldehyde. Developing agents specified are hydroquinone, catechol, pyrogallol, 2:5-dihydroxy-diphenyl, metol, N- ethyl-p-aminophenol, p-diethylamino-aniline, p-dimethylaminoaniline, p-aminoaniline, 2- amino-5-diethylamino-toluene, 4-amino-N-(# - methanesulphonamidoethyl)-m-toluidine and 4- amino-3-methyl-N-ethyl-N-(#-hydroxyethyl) aniline. Polymeric colour-formers described are those of Specifications 995, 364, 995, 363 and 967, 504.
Patent GB-786994-A (GB)
Title: Electric incandescent lamp
IPC: H01K1/20
Filed: 1955-11-22
Abstract: The leading-in conductors to the filaments of high-wattage electric lamps (see Group XI) are composed of non-ferromagnetic metal such as an alloy of .Ni.63-70 per cent .Cu.29-37 per cent or an alloy of .Ni.63-70 per cent .Fe.2 per cent .Mn.1 per cent .Si.1 per cent .C.0.25 per cent .Al.2-4 per cent or an alloy of .Ni.60.1 per cent .Cu.37.0 per cent .Fe.1.4 per cent .Mn.1 per cent .Si.0.1 per cent .C.0.15 per cent .S.0.01 per cent
Patent GB-521454-A (GB)
Title: Improvements in lighting fittings
IPC: F21V17/00
Filed: 1938-11-18
Abstract: 521,454. Lamp fittings. CAMPBELL, G., and BENJAMIN ELECTRIC, Ltd. Nov. 18, 1938, No. 33559. [Class 75 (ii)] To mount a subsidiary reflector 16, Fig. 1, or 19, Fig. 3, or other element within use is made of a split annular member 12 with projections 12a taking over projections 11a on the main body of the fitting when the ring 12 is expanded by action of the screw 13. Lugs 17 on the ring facilitate the attaching of the subsidiary elements.
Patent GB-1514348-A (GB)
Title: Apparatus for controlling a fuel injection plant
IPC: F02D41/36
Filed: 1976-08-12
Abstract: 1514348 Automatic control of fuel injection WISSENSCHAFTLICH-TECHISCHES ZENTRUM AUTOMOBILBAU-KARL-MARX-STADT VEB 12 Aug 1976 [18 Aug 1975] 33569/76 Heading G3N A fuel injection system for a diesel engine comprises means for generating a first electrical signal of sawtooth waveform having a value changing linearly in dependence on the angular displacement of the engine crank-shaft from a datum position, means to generate two second electrical signals having instantaneous values dependent on the engine loading and engine speed, means to multiply these signals together and produce a product signal which is compared with the first signal such that when the product and first signals are equal a fuel injection pulse commences and is terminated when the first signal equals a reference signal. As shown a cam 11 mounted on the crank-shaft of the engine causes sensor 10 to output a linearly changing waveform shown in Fig. 3a. An accelerator pedal transducer 25 provides an engine load signal which is a linearly rising voltage V α . A speed transducer comprising disc 21 and sensor 20 produce a voltage V #  which rises linearly with speed. Multiplier 30 provides the product Up which is used in comparator 40 to determine when the sawtooth waveform equals the product voltage Up and the reference voltage U b , which is zero in the present case, to produce the injection pulse PO, Fig. 3a. To ensure that the injection pulse terminates a predetermined angle before TDC regardless of speed, a displacement voltage U v  is derived from the engine speed signal and subtracted from the sawtooth waveform voltage U # . Other corrections can be applied by operating on the signals before applying them to the comparator to provide maximum fuel level, temperature compensation and the like.
Patent GB-1361845-A (GB)
Title: Ventilation installations in rooms provided with used air windows and lighted by a number of fittings
IPC: F21V33/00
Filed: 1971-07-16
Abstract: 1361845 Ventilating buildings; lighting fittings; systems of lighting SVENSKA FL€KTFABRIKEN AB 16 July 1971 [21 July 1970] 33578/71 Headings F4V and F4R A ventilation system for a room having fluorescent lamps 5 enclosed in fittings 6 comprises ducts 3, 4 for exhausting air from the room adjacent a window 1 and for passing the air over the lamps 5 to cool the lamps. The duct 3 may serve one or more ducts 4. The exhausted air may be delivered to an air conditioning unit for heat recovery, filtering and recirculation of air to the room. The room is an office or a hospital ward.
Patent GB-1219536-A (GB)
Title: A method of machining an annular end surface of a hollow cylindrical body
IPC: B23B5/16
Filed: 1969-07-04
Abstract: 1,219,536. Chamfering pipe ends; grinding. CRC-CROS INTERNATIONAL Inc. 4 July, 1969 [9 July, 1968], No. 33733/69. Headings B3C and B3D. A rotary cutter or grinding head for chamfering the end of a pipe 11 comprises clamping shoes 13 for gripping the pipe bore, three pivoting arms 50, each carrying a roller 54 for following the contour of the pipe bore, and machining elements 75. Each shoe 13 is supported on a radially extensible rod 15, and the rods are moved by toggles 23 actuated by a bar 21 movable by hydraulic or mechanical means. A plurality of sets of shoes may be provided. Arms 50 are pivoted to a face-plate 34 at 52 and the face-plate is integral or attached to a spider 32. The latter is rotatably mounted on a sleeve 31 keyed to a non-rotary hollow shaft 30, and is rotated by an electric or hydraulic motor 40 through gearing 38, 36. Face-plate 34 is moved into the working position by hydraulic pistons 92, until rollers 54 enter the pipe bore, and secondary rollers 80 abut the end of the pipe.
Patent GB-194663-A (GB)
IPC: C01F5/24
Filed: 1922-12-11
Abstract: Minerals containing magnesium and calcium carbonates or silicates or the products obtained by roasting such minerals are treated with water, carbonic acid, and an alkali carbonate or bicarbonate at 60-70 DEG  C. and the solution of magnesium-alkali carbonate or bicarbonate is separated from the insoluble residue containing the calcium carbonate, silica, alumina, iron &c., all as described in Specification 17311/14.  According to the present invention, the heating of the solution of the double carbonate to cause the separation of magnesium carbonate is effected in a vacuum, the temperature mentioned being 20-35 DEG  C.  The magnesium carbonate precipitates in the form of tri-hydrate, MgCO3.3H2O.
Patent GB-481314-A (GB)
Title: Improvements relating to vacuum brake apparatus for railway and like vehicles
IPC: B60T13/46
Filed: 1936-12-09
Abstract: 481,314. Fluid - pressure brakes. GRESHAM & CRAVEN, Ltd., GRESHAM, J. N., ARNOLD, C., and MARSH, G. C. Dec. 9, 1936, No. 33800. [Class 103 (i)] In an automatic vacuum brake air is admitted directly from the atmosphere to the brake cylinder on brake application in proportion to the increase in train pipe pressure and a reservoir under high vacuum is connected to the brake cylinder in release by a control fitting comprising valves operated by a single diaphragm, acted on by train pipe and brake cylinder pressure. The chamber t is connected to the train pipe and the chambers d, c<1> to the brake cylinder. Rise of pressure in the chamber t, on brake application raises the diaphragm a which opens the atmospheric valve t admitting atmospheric air to the brake cylinder through the chamber d. This air entering the chamber c<1> through a restricted orifice c acts on the other side of the diaphragm a and recloses the valve f at each stage of the increase in train pipe pressure. Decrease of pressure in the chamber t, on brake release depresses the diaphragm a and opens a valve i to connect a vacuum reservoir connected at m to the brake cylinder by means of a reducing valve n which ensures a less vacuum in the brake cylinder than in the vacuum reservoir. The brake cylinder and reservoir are evacuated through the check valves u, v.
Patent GB-507416-A (GB)
Title: Improvements in or relating to refrigerating apparatus
IPC: F25B39/02
Filed: 1937-12-07
Abstract: 507,416. Refrigerating. ELECTROLUX, Ltd. Dec. 7, 1937, No. 33835. Convention date, Dec. 10, 1936. [Classes 29 and 64 (iii)] Absorption systems.-Surfaces of the absorber 13 and of the evaporator 12 over which solution or refrigerant flows, particularly water and brine coils 22, 20 over which the liquid is distributed from troughs 27, 19, are artificially roughened or rendered liquid-retaining by electro-deposition of a porous or spongy metal coating thereon. In the case of steel coils a coating of iron is applied. The system shown is of the known inert gas type including a generator 10, rectifier 17 and condenser 11.
Patent GB-311745-A (GB)
Title: Improvements in and relating to apparatus for and method of positioning members relatively to each other
IPC: B22C11/00
Filed: 1927-12-15
Abstract: 311,745. Marks, E. C. R., (Bohn Aluminum & Brass Corporation). Dec. 15, 1927. Work-holders.-A work-positioning fixture is described with reference to assembling a core member and a metallic insert for use in casting pistons of kind described in Specification 268,399. A side core member 3 is placed by trunnions 14 in V-notches 12 in lugs projecting from the base of the fixture 1. It is then swung from the position shown by dotted lines in Fig. 4 to the full line position. A bevelled flat-sided pin 13 locates the core member axially of the trunnions by engagement with a slotted lug 15 on the core. The insert 4 is located by its formation as shown in Fig. 2 on a support. 5 adjustably clamped to the fixture by a bolt 8 passing through a clearance hole in the flange 6 thereof. Conical ended pins 16 in the core engage holes in the insert and a shoulder 18 engages an edge thereof. The insert is clamped to the core in the located position by a screw 17.
Patent GB-1324199-A (GB)
Title: Herbicidal preparations
IPC: A01N/
Filed: 1971-07-20
Abstract: 1324199 Compositions comprising dalapon PHILIPS GLOEILAMPENFABRIEKEN NV 20 July 1971 [23 July 1970] 34026/71 Heading A5E A method of controlling reeds (Phragmites communis) is characterised in that, on or in the soil which contains young reeds which have not yet emerged, there is dispersed a preparation which contains dichlobenil and/or chlorthiamid and dalapon as active constituents. The compositions for use in the method may contain a binder and a finely-ground carbonaceous mineral.
Patent GB-983845-A (GB)
Title: Omnirange beacon antenna
IPC: H01Q3/14
Filed: 1961-09-22
Abstract: 983,845. Aerials. STANDARD TELEPHONES & CABLES Ltd. Sept. 22, 1961 [Oct. 13, 1960], No. 34044/61. Heading H4A. In an omnirange beacon aerial (for a TACAN beacon) a radiator 2, Fig. 2, illuminates parasitic elements 3, 4 and short-circuited transmission lines 6, 10 only are connected to the parasitic elements such that in one frequency band (Fig. 1, not shown) parasitic element 3 is effective, and element 4 is not and vice-versa in a lower frequency band. Element 3 comprises parts 3A, 3B; length LP is made 0.633 # 2 , where # 2  is the wavelength corresponding to the midfrequency F 2  of the higher band, and mutatis mutandis for length LP<SP>1</SP> of element 4. The parasitic elements may be of conductive or dielectric material. Length L 1  of line 10 is chosen such that terminals 11, 12 of element 4 " see " a substantially short-circuit over the lower frequency band; re-radiation by element 4 is then a maximum, affording an enhancement in the radiation polar diagram. Length L 2  of line 9 is chosen similarly for the higher frequency band. A discussion of the calculation of lengths L 1 , L 2  is given. A parasitic element operable in one band is effectively removed in the other band; preferably L 2  = 1.5# 2  and similarly for L 1 . In a further embodiment, Figs. 3, 4, 5, the parasitic elements 32, 33 are on or embedded in respective dielectric cylinders 26, 27 for rotation bodily about central radiator 18, 19, a dielectric supporting plate 25 being mounted on rotating dielectric cylinder 24. Each parasitic element group comprises nine elements with associated transmission lines 42, 47; R.F. interference between the lines is obviated by equal portions 48A, 48B being parallel and equidistant from line 42. Hence the parasitic elements of the two groups can be placed in line. The calculation of the dimensions of the lines is given; radii R 3 , R 4  are chosen as described in Specification 842,063. In another embodiment different members of parasitic elements are utilized in the two frequency bands, Figs. 6 and 7 (neither shown); six high-band parasitic elements afford sixth harmonic modulation and nine low-band elements afford ninth harmonic modulation.
Patent GB-393331-A (GB)
Title: Process for the manufacture of new sulphonic acids of the anthraquinone series
IPC: C09B5/14
Filed: 1931-12-08
Abstract: 2-sulpho-1 : 9-anthrapyridone, and 2-halogen-1 : 9-anthrapyrimidones, substituted in the 4-position by alkylamino-, arylamino, aralkylamino-, or hydroarylamino are obtained by treatment with neutral sulphites in presence of solvents such as phenol, alcohol, pyridine &c., of the corresponding 2-halogen-compounds.  According to examples, 4-anilido, 2-chloro-1 : 9-anthrapyridone (obtained from 2 : 4-dichloro-1 : 9-anthrapyridone and aniline, 4-anilido-2-homo-1 : 9-anthrapyridone (obtained from 2 : 4-dibromo-1 : 9-anthrapyridone and aniline) or the corresponding 4-m-chloroanilido, hexahydroanilido, 4-methylamino (obtainable by treating 4-methoxy-2-bromo-1 : 9-anthrapyridone with methylamine), 4-anilido-2-bromo-1 : 9 (C-cyano)-anthrapyridone (obtained by treating a -amino-anthraquinone with cyanacetic ester and ring-closing), and 4-anilido2-bromo-1 : 9-anthrapyrimidone (obtained by condensing 1-amino-2-bromo-4-anilido-anthraquinone with urea), or the corresponding 6-chloro and 6-sulpho derivatives, are treated with sodium sulphite in phenol, alcohol, pyridine, &c. to give the 2-sulphoderivatives.
Patent GB-427823-A (GB)
Title: Improvements in and relating to electric generators
IPC: H02K23/12
Filed: 1933-12-05
Abstract: 427,823. Dynamos. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Barry, J. C. ; 628, W. 10 Street, Erie, Pennsylvania, U.S.A.) Dec. 5, 1933, No. 34197. Convention date, Dec. 8, 1932. [Class 35] Exciting.-In a petrol-electric drive or similar arrangement in which the generator 11 must deliver constant power at constant speed with a variable load the poles of the exciter are divided into two parts, 14, 15, both of which are wound with two windings, one, 19, in series with the load and the other, 16, from a source of constant voltage 17. The windings on the portion 14 are cumulative and those on the portion 15 opposed, the arrangement being such that the portion 15 is saturated at no load by the source 17 and reversely saturated at full load by the generator current. The part 14 is not saturated over most of the working range, but may be saturated at full load. The source 17 may be a battery charged from the exciter and be in series with a part 24 of the generatorwinding, an automatic switch 25 being provided to ensure that this circuit is only closed when the exciter current is sufficient. In a modification an arrangement similar to that described is applied to the generator, the exciter being a simple generator. Reference has been directed by the Comptroller to Specification 216,689, [Class 35].
Patent GB-326859-A (GB)
Title: Improvements in thermionic valve circuits
IPC: H04B1/22
Filed: 1928-11-22
Abstract: 326,859. Hayden, H., R. Nov. 22, 1928. Thermionic amplifiers and deteetors.-In a multi-stage thermionicvalve circuit supplied from a source of varying voltage, inter-valve couplings are so constructed and arranged that the effect of the varying voltage on the plate circuit of the last valve 46 is neutralized by the variations applied to its grid by the net effect of the varying voltage of the source on the preceding valves. The source of varying voltage comprises a rectifier 89, which supplies plate current through an impedance 94 and shunt condensers 98, 99 arranged on opposite sides of the impedance and having a combined capacity of less than 7 microfarads. Resistance-capacity coupled amplifying-valves 30, 40, 46 are connected across the output 93, 95 from the filter, and a detecting-valve 16 is connected across a condenser 110 in series with a variable resistance 100. Hum is eliminated by varying the plate voltage of the detector by the resistance 100, and by varying the grid bias of the amplifying-valves by a potentiometer 65 and of the detecting-valve by a variable grid leak 21 and condenser 20. A grid coil 13 is wound on a cylindrical former and spaced from an aerial coil 12 by grooved strips, and a reaction coil 22 is wound on a cylindrical former within the grid coil, and mounted on a rotary spindle (Figs. 2-5, not shown).
Patent GB-312097-A (GB)
Title: Process for the manufacture of chromium compounds
IPC: C22B34/32
Filed: 1927-12-20
Abstract: 312,097. I. G. Farbenindustrie Akt.- Ges., Carpmael, K., and Carpmael, K. S. Dec. 20, 1927. Addition to 259,447. Alkali chromates.-The residue obtained by roasting an alkali carbonate or hydrate with a mixture of coarse and fine grained chromium ore in a mechanical furnace by the process of the. parent Specification, after subjection to the acid treatment described therein, is added to a fresh charge of ore, and the roasting process and extraction and re-use of the residue repeated only until the impurities of iron oxide, alumina, and magnesia have accumulated to a certain extent which should not exceed 70 per cent of the residue. The latter is then mixed with a filler such as dolomite, chalk, or magnesia and roasted with alkali carbonate in a revolving furnace to extract its chromium content. The amount of filler needed is reduced proportionately to the amount of impurities present in the residue.
Patent GB-1076224-A (GB)
Title: Glass articles
IPC: C04B14/24
Filed: 1964-08-24
Abstract: Glass bubbles having diameter of 5-300 m , average true particle density of 0.05-1.2, have composition including by weight at least 40% SiO2, at least 5% alkali metal oxide, and 5-50% of at least all other constituents conventionally present as optional ingredient in glass requiring initial glass forming temperature of melting of 1200-1500 DEG  C.  The bubbles are formed by heating glass particles to a temperature, e.g. 1050-1300 DEG  C., at which the glass becomes plastic and at which gas is formed within the particle, the viscosity at such temperature being 101-104 poises; the temperature is maintained for less than 3 seconds, e.g. by allowing the particles to fall through a heating stack or flame.  The treatment temperature is usually 100-300 DEG  C. lower than the temperature required for initial glass formation. The bubbles are collected by a water spray. They may then be treated, e.g. by application of stearate-chrome complex; or the wall thickness may be reduced by acid treatment, e.g. using 5% HF solution; or the bubbles may be expanded at plastic glass temperatures under vacuum.  The initial glass particles are, if necessary, treated to incorporate gas-forming material, e.g. by allowing the particles, at below melting temperature, to adsorb or absorb materials, e.g. H2O, CO2, SO2 or F2, from surrounding atmosphere; or by incorporating into the glass to be used for the particles a quantity of an inorganic material or complex which will liberate gas during heating, e.g. complexes of fluorides, e.g. sodium or calcium fluoride.  The glass for the particles may be natural or synthetic, and is preferably formed by fusing the raw materials in an oxidizing atmosphere; and the particles are preferably converted to bubbles in a neutral or reducing atmosphere.  The particles may be rough cullet or beads.  The bubbles are generally unicellular, but may contain a plurality of internal voids. The wall thickness may range from less than 1 m  up to e.g. 20% of their diameter.  The preferred glass composition is, in weight per cent: SiO2, 60-80; Na2O, 5-16; K2O + Li2O, 0-10; Na2O + K2O + Li2O, 5-16; CaO, 5-25; RO, 0-15; RO2, 0-10; R2O3, 0-20; R2O5, 0-25; F2, 0-5. RO refers to bivalent metal oxides other than CaO: e.g. ZnO, PbO and alkaline earth oxides, e.g. BaO, MgO and SrO. RO2 refers to quadrivalent metal oxides other than SiO2: e.g. TiO2, MnO2 and ZrO2. R2O3 refers to trivalent oxides, e.g. B2O3, Al2O3, Fe2O3 and Sb2O3.  R2O5 refers to pentavalent oxides, e.g. P2O5 and V2O5. The bubbles may be used as fillers, e.g. in moulded parts, e.g. with resins; or in adhesives, or with oil.
Patent GB-1083040-A (GB)
Title: Foamable vinylaromatic polymers
Inventor: EAGLETON SIDNEY DOUGLAS
IPC: C08J9/224
Filed: 1963-09-02
Abstract: Particles of a foamable resin comprise a vinylaromatic polymer, a volatile blowing agent such as butane or pentane and a liquid aliphatic hydrocarbon additive containing from 7 to 12 carbon atoms and having a boiling point at atmospheric pressure between 95 DEG and 220 DEG  C. Preferably, the hydrocarbon additive has a viscosity not greater than 10 centipoises at 25 DEG  C.  Specified additives are white spirit, n-heptane, octanes, nonanes, decanes and dodecanes and mixtures of these.  A finely-divided inert solid, e.g. silica, in the form of a coating on the surface of the particles may also be included.  The polymer may be polystyrene, poly a -methylstyrene or a copolymer of styrene with 10-20% of methyl methacrylate, acrylonitrile or butadiene.
Patent GB-505386-A (GB)
Title: Improvements in ventilators
IPC: F24F7/00
Filed: 1937-12-14
Abstract: 505,386. Ventilators. GALBRAITH, A. Dec. 14, 1937, No. 34558. [Class 137] An exhaust ventilator comprises at its inlet end a number of convergent passages 10 formed between conical partitions 11, the air passing through a tube 7 to outlets between a series of arched baffles 1 to 4 arranged fanwise, such an arrangement being described in Specification 435,050. The outermost baffle 1 is provided with a wind vane 13, and is pivoted at 5 so that it may rock in a direction depending on that of the wind, so as to increase the extraction effect. The movement is limited by stops 12, and the baffle assembly may be turned about the axis of the ventilator. The baffles may be flattened ellipsoidal segments.