baber/WOPTO huggingface dataset:
Patent GB-1356116-A (GB)
Title: Photographic slide projectors
IPC: G03B23/02
Filed: 1970-10-14
Abstract: 1356116 Optical projection apparatus GNOME PHOTOGRAPHIC PRODUCTS Ltd 6 Oct 1971 [14 Oct 1970] 48766/70 Heading G2J The body of a slide projector includes a cast or moulded cover extending over the top and four sides of the projector and a base. The cover is formed with mounting or supports for the major components viz optics and slide indexing mechanism and is formed with a guide for a slide magazine. The base may be a plain panel. The cover may be of die cast light alloy or moulded plastics.
Patent GB-1006728-A (GB)
Title: Amine salts of pyrrolidone carboxylic acid
Inventor: BROH-KAHN ROBERT HENRY
IPC: C07D207/28
Filed: 1962-12-28
Abstract: The invention comprises amine salts, especially betaine, choline, methenamine, morpholine and piperazine salts, of pyrrolidone carboxylic acid, and this preparation thereof by reacting the acid with the amine or a salt of the acid with an amine salt in an inert solvent consisting of water, a liquid C1-6-alkanol or a mixture of these, and recovering the amine salt of the carboxylic acid. Pyrrolidone carboxylic acid is prepared by autoclaving glutamic acid and water.  Pharmaceutical compositions, used to increase the blood serum level of pyrrolidone carboxylic acid to produce a psychotonic effect or to produce a reduction in the blood level of serum gamma-globulin, comprise an amine salt of pyrrolidone carboxylic acid and a pharmaceutically acceptable carrier.  The compositions may be formulated as tablets, capsules, powders, granules or solutions for oral administration or as solutions for parenteral administration.
Patent GB-1116169-A (GB)
Title: Improvements in or relating to gunn effect apparatus
IPC: H01L47/02
Filed: 1966-11-02
Abstract: 1,116,169. Digital light measurement. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 2 Nov., 1966 [11 Nov., 1965; 16 Dec., 1965; 24 Dec., 1965; 18 Feb., 1966], No. 49213/66. Heading G4H. [Also in Divisions G1 and H1] In a Gunn effect oscillator or amplifier apparatus including a semi-conductor element adapted to exhibit negative resistance when an electric field in excess of a certain critical value is applied, light is employed to produce a photocurrent which is superimposed on the current already present in the element to control its operation. The light may be applied directly to the element or to a separate light sensitive device connected in circuit with the element. In a Gunn effect oscillator adapted to oscillate when biased by an electric field exceeding a critical value U k , the oscillations may be initiated or stopped by means of the photocurrent which causes the actual bias U applied to the element to rise above or fall below U k , the photo-current being a function of the light intensity E. Consequently, by employing a number of Gunn elements biased to different extents above U k , the intensity of the light may be determined by noting which of the elements cease to oscillate. The elements preferably have the same oscillating frequency and are parts of the same semi-conductor body, although different frequencies and materials may be used. The invention may also be used to demodulate light of modulated intensity providing the period of the modulation is greater than the period of the oscillations but not more than twice this period. If the photo-current is produced by a separate light-sensitive device, this may be a photo-diode, photo-transistor or photo-resistor. In Gunn effect amplifier apparatus, the invention provides means to modify the gain or the frequency at which maximum gain is exhibited. The light employed may be a laser beam.
Patent GB-1474357-A (GB)
Title: Process for the production of molten iron and simultaneous recovery of reducing gas
IPC: C21B11/08
Filed: 1975-12-01
Abstract: 1474357 Reducing gas production ACIERIES REUNIES DE BURBACH EICH DUDELANGE SA 1 Dec 1975 [6 Dec 1974] 49304/75 Heading C5E [Also in Divisions C7 and F4] In the production of molten pig iron with simultaneous recovery of a reducing gas; carbonaceous material is introduced into one zone of a molten bath to cause supersaturation, while in a second zone adjacent to the first zone oxygen is introduced and evolves carbon monoxide with the excess carbon, pre-reduced iron ore also being introduced to, or close to, the second zone where it is melted and finally reduced by the bath carbon. The evolved gases may be used to pre-reduce iron ore. As particularly described carbonaceous material, e.g. coal in a stream of exhaust gas is injected into the bath through lance 70, while pro-reduced ore is fed by gravity through the central channel of a multi-channel lance 80 whereby it is surrounded by a stream of oxygen which agitates the bath. The composition of the gas evolved, and of the bath, may be controlled by adjustment of the inputs preferably so that the CO : H 2  volume ratio of the former does not exceed 3. The preferred fuel is anthracite, lignites or other coal unsuitable for coking, and it is injected in a stream of steam, CO 2 , hydrocarbon or CO 2 -rich waste gas.
Patent GB-1485312-A (GB)
Title: Device for measuring carbon monoxide content in air at or below atmospheric pressure
IPC: G01N21/64
Filed: 1974-11-15
Abstract: 1485312 Determining carbon monoxide photo-electrically R A YOUNG 15 Nov 1974 [20 March 1974] 49477/74 Heading G1A [Also in Division H1] Carbon monoxide in air is detected by illumination with deuterium lymon alpha radiation, 1215Š, and detecting fluorescentradiation. preferably in the band 1600-2500Š. Determination may be continuous or of discrete samples. Measuring chamber 13 has two inlet windows 36, 38, preferably of radiation damaged lithium fluoride through which two RF fed deuterium lymon alpha sources 31, 33 feed via collimators 32, 34 and filters 28, 30 when windows 36, 38 are non selective. Detector 15 is mounted in a projector 44 so that it does not receive direct light from the sources. It is mounted behind window 42, filter 44, pass band 1600-2900Š, and collimator 40 and is preferably a photo-multiplier with a TeCs photocathode. Its output feeds counter 17. The unknown CO content gas is supplied from 19 and a reference may be supplied from 25. For continuous measurement, the gas may be evacuated via pipe 29. Measurements at different temperatures may be made using temperature controller 20. The chamber dimensions are such that the ultraviolet radiation from the sources is absorbed by air present before reaching the walls, thus preventing surface fluorescence. A construction of deuterium lymon alpha source is described, see Division H1.
Patent GB-978678-A (GB)
Title: Triangulation tower
IPC: E04H12/00
Filed: 1963-12-17
Abstract: 978,678. Triangulation towers. W. S. PARK. Dec. 17, 1963, No. 49728/63. Heading E1B. In a tower used as a surveying station comprising inner and outer lattice structures which are independent of each other, the outer structure 21 supports a tubular member 46 and receives surveying instruments, the member 46 extending through a tubular windshield 75 supported on a working platform 68 that is fixed to the inner structure. The structures are each of triangular section, the outer structure being wider at its base and being built up in sections which are clamped together. The inner structure is supported by wire stays 43 extending to the ground. Both the windshield 75 and the tubular member 46 are adjustably clamped in position.
Patent GB-1291057-A (GB)
Title: Improvements in or relating to the manufacture of thermal storage materials
Inventor: SPIKINS PAUL
IPC: C08L1/28
Filed: 1968-10-22
Abstract: 1291057 Carboxymethyl cellulose gels P SPIKINS 17 Oct 1969 [22 Oct 1968] 50026/68 Heading C3F [Also in Divisions F3-F4] A gel material for use as a heat store or a heat sink is prepared by flowing powdered carboxymethyl cellulose into the path of a plurality of jets or streams of water to form a gel. The water may contain a preservative such as sodium orthophenylphenol or 1 : 2-benzisothiazolone. The carboxy methyl cellulose may be mixed with sodium.benzoate and urea. Apparatus for carrying out the above process comprises a vertical passage of substantially circular cross-section 2, means 11, 12 for supplying the powdered carboxy methyl cellulose to said passage to flow downwards therefrom in a stream, and means 3, 4, 8 for supplying water in a plurality of jets or streams to mix with said powder beneath said passage at 5, 6.
Patent GB-1473832-A (GB)
Title: Circuit for the dynamic range of a signal
IPC: H04B1/64
Filed: 1974-05-13
Abstract: 1473832 Companders DOLBY LABORATORIES Inc 13 May 1974 [17 May 1973] 50143/76 Divided out of 1473831 Heading H4R The Specification repeats the description in the parent Specification 1,473,831 but relates to a circuit for modifying the dynamic range of an input signal comprising a series connection of a dynamic range linear impedance including a resistor, and a two terminal variable impedance (Fig. 9) including a frequency selective circuit responsive to the current in that impedance to introduce a voltage across it, the frequency selective circuit comprising a fixed high pass filter (C 1 R 1 ) and a variable high pass filter (C 2 R v ) and the variable characteristics operating so as to restrict the introduced voltage to one tenth of the voltage across the dynamic range linear impedance at maximum input signal level. A limiter in the form of antiparallel diodes may be included in the control loop to limit overshoot.
Patent GB-1193499-A (GB)
Title: Top Roller Mounting in Drafting Systems of Textile Machines
IPC: D01H5/50
Filed: 1967-11-06
Abstract: 1,193,499. Mounting textile rollers. N. SCHLUMBERGER & CIE. 6 Nov., 1967 [7 Nov., 1966], No. 50275/67. Heading D1D. A top roller weighting and mounting device for a textile roller 2 e.g. a drafting roller comprises a two-armed lever 4a, 4b carrying the top roller and pivoted at 7 on a stationary support 9, an operating lever 11a pivoted at 10 to the free end of arm 4b, a connecting lever 14 pivoted at 13 on lever 11 a and engaging at its other end 15 on a slide 16 resiliently biassed by a spring 18. As shown lever 11a is biassed in an anticlockwise direction by spring 18 via lever 14 and bears against the arm 4a carrying roller shaft 3 and thus biassing roller 2 against lower roller 1. To relieve the weighting, lever 11a is rotated in a clockwise direction by knob 12 until the pivoted end of lever 14 engages arm 4b, see Fig. 2 not shown. This gives a second stable position in which the rollers 1, 2 are in contact but have little contact pressure. If lever 11a is rotated further in a clockwise direction roller 2 is lifted clear of roller 1 until a surface of lever 14 contacts the lower surface of arm 4b. This gives a third stable position in which the roller is raised. The support 9 is adjustable about a bar 20 and the weighting effect of spring can be adjusted by a grub screw which locates the lower end of the spring.
Patent GB-1096378-A (GB)
Title: Improvements in or relating to the treatment of fruit and vegetable crops
Inventor: PARSONS LESLIE ARTHUR
IPC: A23N15/08
Filed: 1965-11-26
Abstract: 1,096,378. Preparing onions &c. LES PARSONS & SONS (ENGINEERS) Ltd. Nov. 4, 1966 [Nov. 26, 1965], No. 50302/65. Heading A4C. [Also in Division B8] The claims relate to the article carrier forming part of the onion &c. preparing machine described in Specification 1,096,377.
Patent GB-1533249-A (GB)
Title: Processing an elongate web of material
IPC: G03B27/58
Filed: 1975-12-09
Abstract: 1533249 Removing curl from webs H F HOPE & S F HOPE 9 Dec 1975 [9 Dec 1974] 50503/75 Heading B8R Apparatus for removing the curl from the leading end of a photographic film comprises a pair of rollers 60, 62, Fig. 1, provided with peripheral grooves 68, 70 which are interdigited with teeth 64, 66 to impart longitudinally extending corrugations to the leading end of the film 20 to stiffen the end as it is being fed into the cup of feed rollers 54, 56, Fig. 2. The rollers 60, 62, are driven by a one-revolution clutch drive and the roller 60 is semi-cylindrical. In a modification the rollers 60, 62 are cylindrical and moved towards and away from each other during the single revolution by a cam (104, Fig. 5). In a further modification the rollers may be replaced by platens (108, 110, Fig. 8) or one roller may be replaced by a resilient roller.
Patent GB-1412612-A (GB)
Title: Sensitive print-out materials
IPC: B41M5/20
Filed: 1972-11-03
Abstract: 1412612 Electro-photography EASTMAN KODAK CO 3 Nov 1972 [4 Nov 1971 20 Dec 1971] 50700/72 Heading G2H [Also in Division D2] A method of forming a print-out image comprises applying an electrical potential across a sensitive material comprising an electrically conductive support bearing a layer comprising a photo-sensitive crystalline compound containing at least two conjugated acetylenic groups and causing current to flow in the image areas. The invention also comprises sensitive print-out materials comprising an electrically conductive support and a layer comprising a photo-sensitive crystalline compound containing at least two conjugated acetylenic groups, and in said layer or in a layer contiguous thereto, a photo-conductive composition. A thin protective layer e.g. of gelatine or polyvinyl alcohol may be applied over the electrosensitive layer of the print-out materials, and the photosensitivity of the polyyne compound may be reduced by incorporating a U.V absorbent in the polyyne layer, or as a separate overcoat. Where the sensitive print-out material includes a photoconductive composition, image formation may be effected by application of an electrical potential across the polyyne compound and photoconductive layer(s) while exposing the material imagewise to radiation to which the photoconductive composition is sensitive. In a further embodiment of the invention, a print-out image is formed by (a) placing an element comprising an electrically conductive support bearing a layer of a photo-sensitive crystalline compound containing at least two conjugated acetylenic groups in faceto-face contact with an element comprising an electrically conductive support bearing a layer of a photo-conductive composition; (b) imagewise exposing the photo-conductive layer to radiation to which it is sensitive while applying an electrical potential across the photo-conductive and polyacetylenic compound layers, and (c) separating the two elements. Many examples of suitable polyyne compounds, photo-conductors, binders and sensitizers for use therewith, and electrically conductive supports are given.
Patent GB-1445983-A (GB)
Title: Pharmaceutical formulations
IPC: A61K31/505
Filed: 1972-11-06
Abstract: 1445983 Compositions containing allopurinol WELLCOME FOUNDATION Ltd 5 Nov 1973 [6 Nov 1972] 51050/72 Heading A5B A tablet formulation comprises from 55 % to 79% (w/w) of allopurinol having a particle size, as defined, less than 40Ám, from 15 to 35% (w/w) of an inert filler, from 5 to 15% (w/w) of a disintegrating agent and from 1 to 10% w/w of a granulating agent.
Patent GB-1526296-A (GB)
Title: Means and method for detecting cracks in the heat-insulating lining of a container for cold liquids
IPC: G01M3/18
Filed: 1975-12-15
Abstract: 1526296 Detecting faults SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 15 Dec 1975 [22 Jan 1975] 51247/75 Heading G1N To detect cracks in the rigid foam insulation (preferably polyurethane) lining a rigid wall of a liquefied gas storage container a plurality of electrical conductors are located in the lining and connected to electrical equipment sensitive to a breakage of one of the conductors. The conductors may be in the form of copper wires incorporated in fibreglass mats which are bonded with an epoxy resin to form a barrier in the lining. Alternatively the conductors may be in the form of stripes of conductive paint. At least one end of each conductor is preferably connected to the electrical sensing equipment via a rotary switch which provides a scan of each conductor successively.
Patent GB-1494020-A (GB)
Title: Production of light-sensitive material
IPC: G03C1/675
Filed: 1975-12-15
Abstract: 1494020 Photo-sensitive materials FUJI PHOTO FILM CO Ltd 15 Dec 1975 [16 Dec 1974] 51339/75 Heading G2C A process for producing a heat-developable light-sensitive material comprises coating on a support a layer which comprises a tellurium halide and/or a selenium halide, an organic base, a binding agent and a solvent and then drying the coated layer. The organic base may be an aliphatic amine, aralkylamine, aromatic amine, N-hetero-cyclic compound or a diazonium compound. The layer may in addition contain a sensitizer which is a quinone, an arylketone, a tetracyano-quinodimethane, a benzene or naphthalene substituted by a hydroxyl group or a C 1-7  alkoxyl group, an arylamine, a diazonium salt, a metal acetylacetonate or a metal salt. Alternatively, the sensitizer may be present in a second layer which further comprises a binding agent, which may or may not be the same as that referred to above, and a solvent. The material may be imagewise exposed to light and developed by heating to leave a red or black image of Se or Te. Exemplified compositions are TeCl 4  with aniline, o-phenylenediamine, stearylamine, n-laurylamine and SeCl 4  with ethylenediamine. Exemplary binders are polyvinyl formal and polyvinyl butyral. Specifications 1467786 and 1487874 are referred to and relate to coating composition prepared from a complex of the Te and/or Se halide and the base.
Patent GB-1421399-A (GB)
Title: Fuel injectors
IPC: F23R3/14
Filed: 1973-11-07
Abstract: 1421399 Burners SOC NATIONALE D'- ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION 7 Nov 1973 [13 Nov 1972 26 Oct 1973] 51579/73 Heading F4T A fuel injector, e.g. for a jet propulsion engine, comprises a tubular duct 103 closed at its upstream end by a plate 105, and an annular passage 104 directing a swirling annular stream of fuel 125 into duct 103 such that the fuel stream is sandwiched between inner and outer airstreams 124, 115 directed through centripetal and further swirl blades 107, 32 respectively. The latter blades 32 may be centripetal, as shown, or axial. An additional annular stream of fuel 45 may be supplied through passage 38 as well as a third air stream 44 from swirlers 106. The fuel is supplied to the injector via a fitting 43 having a first duct 121 leading to the interior 120 of plate 105 which connects with annular chamber 116 via ducts 122 passing through swirler 107. The fuel cools plate 105. A second duct 42 in fitting 43 supplies fuel to annular chambers 40 via ducts 41. The flows through ducts 42, 121 can be independently controlled, duct 42 being closed at low speed engine operation. The airstreams may be arranged to swirl in the same or opposite directions. In modifications (Figs. 2, 4, not shown) the additional fuel stream and the third airstream are not provided. The constructions reduce coking of end plate 105 and formation of nitrogen oxides whilst improving atomization and combustion of the fuel.
Patent GB-1134660-A (GB)
Title: Alpha olefin block copolymers and their preparation
Inventor: HASSELL HOWARD LOVELACE
IPC: C08F297/08
Filed: 1967-11-14
Abstract: 1,134,660. α-Olefin three-block copolymers. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 14 Nov., 1967 [16 Nov., 1966], No. 51697/67. Heading C3P. A block copolymer has the configuration A-B-A, wherein each A is a block of an isotactic homopolymer of an α-olefin which is propylene or a C 5 -C 12  α-olefin, said polymer having a crystallization temperature above 125 C., and B is a random copolymer block of ethylene and at least one α-olefin have 3 to 12 carbon atoms per molecule, said copolymer block showing essentially only a single absorbence in the infra-red wave length region associated with crystallinity (13À4 to 14À2 microns), the block copolymer being substantially insoluble in n-heptane at 20 C. The block copolymers may be obtained by sequential polymerization in the presence of a catalyst comprising gamma titanium trichloride and a dialkyl hydrocarbyloxy aluminium in a Ti : Al mole ratio between 1 : 1 and 1 : 8. In the examples, polypropylene-ethylene/propylene copolymer-polypropylene block copolymers are prepared using a Ti Cl 3 /(C 2 H 5 ) 2  = (C 2 H 5 O) Al catalyst in heptane as solvent.
Patent GB-1376294-A (GB)
Title: Electric switching circuits
IPC: H03K17/14
Filed: 1971-11-08
Abstract: 1376294 Photo-detector circuits; proximity switches DENKI ONKYO CO Ltd 8 Nov 1971 [9 Nov 1970] 51823/71 Headings G1A and G1N [ Also in Division G4] A switch control circuit controlling a number of switches, 4, comprises, for each switch, two resistors 311, 312 connected in series with their junction connected to the switch control electrode, and the series arrangements being connected in parallel, and in series with a common current control element, one of the resistors of each series, e.g. 311, being variable to operate the switch in dependence on change in, for example, pressure, light, or magnetic field. The current control element 7 varies the current through the resistors to compensate for changes in the sensing resistance with temperature. The sensing resistors may be either positive or negative temperature coefficient type, and the portions of the resistors 311, 312 may be interchanged Figs. 6 , 7 (not shown). The current control element 7 may be, as shown, a transistor, and its base bias may be stabilized by a Zener diode, Fig. 9 (not shown), alternatively a resistor (2) may be used as the current control element Fig. 1 (not shown). The circuit may be operated from an A.C. supply Fig. 10 (not shown), and the magnetic field responsive elemeny may be in the form of a push button, Fig. 3 (not shown).
Patent GB-1243524-A (GB)
Title: Improvements in or relating to adhesive applying apparatus
Inventor: MALTBY ROBERT WILLIAMS
IPC: B05C1/08
Filed: 1968-11-02
Abstract: 1,243,524. Rollers. RALPHS UNIFIED Ltd. 3 Nov., 1969 [2 Nov., 1968], No. 52046/68. Heading F2U. [Also in Division B2] A roller is built up from a plurality of elements each comprising a rim 10 and a hub 11 and a plurality of deformable spokes 12. The roller may have a notched surface. The spokes may be of plastics material such as polypropylene and the hub and the rim may be of the same material or of metal. A projection 13 may be provided on the interior of the hub to key each element to the shaft and these projections or their equivalent slots may be arranged at different positions for each element.
Patent GB-1260049-A (GB)
Title: Weather strip for prefabricated elements of an outer wall
Inventor: RAMBERG JOHN
IPC: E04B1/68
Filed: 1969-10-23
Abstract: 1,260,049. Joint covering strips. DEN NORSKE REMFABRIK A.S. 23 Oct., 1969, No. 52056/69. Heading E1B. A weather strip 1 of rubber is positioned in a vertical joint between concrete wall slabs 4 by holding a rib 3 with pliers.