baber/WOPTO huggingface dataset:
Patent GB-1470866-A (GB)
Title: Circuit arrangement for measuring quantities of light
IPC: G03B27/72
Filed: 1974-12-09
Abstract: 1470866 Photo-detector circuits ELEKTROMAT VEB 9 Dec 1974 [27 Dec 1974] 53112/74 Heading G1A [Also in Division G2]  A bridge circuit including a photo-detector Fd, Fig. 1, also has a capacitor Cm which integrates the detector current so as to measure the quantity of light falling on the detector. By choosing resistors R B1  and R B2  appropriately, the voltages E1 and E2 on the bridge can be made to become equal after a desired amount of light has fallen on the detector, and this equality can be used to control a photographic or printing process, alternatively the difference between El and E2 may be measured by a meter calibrated in lumenhours. To avoid loading the bridge, it is preferably connected to a further bridge incorporating MOSFETS T1, T2, Fig. 3. Here the detector is a cell FZ, and the output of the bridge Br1 is measured by Br 2 and appears at El, E2. Brl is set up so that E1 is larger than E2, so that once measuring starts amplifiers OV and SV activate a relay d. To commence measuring, contact D is closed and the relay is activated; the relay is held on by d1. The relay activation passes power to a load YE by contact d3, and also opens d2 which removes a resistor R 3  from the capacitor Cm 1 and allows the integration to start. Once the desired amount of light, pre-set by RD1-3 and Cm1, Cm2, has been received, voltages El and E2 become equal, the relay drops out, and the load VE, e.g. a shutter for exposure control, is de-activated. Two detectors in parallel may be used in Brl to extend the wavelengths to which the apparatus is sensitive. For photo-diodes or resistors a constant current source is preferable in Br1.
Patent GB-1105739-A (GB)
Title: Improvements in and relating to new oxadiazole derivatives and process for preparing same
IPC: A61K31/41
Filed: 1966-11-29
Abstract: 1,105,739. 2 - Dialkylaminoalkyloxadiazoles. CHIMIE ET SYNTHESE DE PICARDIE. 29 Nov., 1966 [14 Dec., 1965; 14 March, 1966], No. 53386/66. Heading C2C. Novel compounds of general formula wherein R is H or C 1-6  alkyl, R 1  and R 2  are each alkyl or cycloalkyl and R 3  is H or C 1-6 alkyl, and acid addition and quaternary ammonium salts thereof, are prepared by heating together a hydrazide of formula and an orthoester of formula R 3 -C(OR 4 ) 3 , where R 4  is C 1-6  alkyl, optionally followed by salt formation.  α - Diethylaminopropionylhydrazide is piepared by reaction of ethyl diethylaminopropionate and hydrazine hydrate. Therapeutic compositions in conventional forms for oral, rectal, parenteral and topical administration and having central nervous system depressant, anti-inflammatory and cardio-vascular activity comprise an above novel oxadiazole and a suitable pharmaceutioally acceptable vehicle.
Patent GB-1167727-A (GB)
Title: Photostorage of items of information in superposition for subsequent individual retrieval
IPC: G03B33/10
Filed: 1966-11-29
Abstract: 1,167,727. Spatial filtering. TECHNICAL OPERATIONS Inc. Nov.29, 1966 [Dec. 1, 1965], No. 53482/66. Headings G2J and G2M. The image of an object 12 multiplied with that of a diffraction grating 13 is photographed on to a plate 11 in a camera 10. The grating may be positioned immediately adjacent the object when this is a printed page or similar two dimensional article, and the spatial frequency of the grating is at least twice the highest spatial frequency resolved in the object image. A plurality of object images are recorded in superposition on the plate 11, each image being multiplied with the image of the diffraction grating the orientation of which is varied for each object. The plate is then processed to give a transparency 24. To reconstruct the image of one particular object, the transparency is illuminated with collimated partially coherent light. The transparency is positioned in the front focal plane of a lens 23, hence the diffraction patterns corresponding to the different orientations of the grating 13 combined with the associated object spectra will appear in the Fourier transform plane of the lens 23. A spatial filter 28 passing e. g. one third diffraction order allows the image of one object only to be focused on a screen 27. The filter may be rotated so as to obtain images of other objects, the amount of rotation from an initial position required to obtain a particular image depending on the orientation of the diffraction grating when exposing the plate to form that particular image. In the case when continuous tone objects are to be recorded, it is arranged for the amplitude transmission of the object transparency to be linearly proportional to the input intensity by which the exposures are made. A liquid with an index of refraction closely matching that of the recording medium is coated over one or both sides of the transparency 24 to overcome image degradation caused by optical thickness variations in the plate 11. Suitable liquids are n-Dibutyl Phthalate and Xylene.
Patent GB-1560140-A (GB)
Title: Photoimaging process and photosensitive films useful in such process
IPC: H05K3/00
Filed: 1977-12-29
Abstract: A polymeric substrate containing photooxidisable sulphur functional groups is selectively exposed. The exposure is carried out in the presence of oxygen and of a photooxidation sensitiser. A latent image is then generated by oxidation of the exposed areas. The latent image is developed. The polymeric substrate contains sulphur functional groups and a photooxidation catalyst. The quantity of the sulphur functional groups and of the photooxidation catalyst is sufficient to generate a developable latent image in the polymeric substrate, if the substrate is exposed in the presence of oxygen, even though the intensity of the exposure is insufficient to generate a latent image in the absence of sulphur functional groups.
Patent GB-1235817-A (GB)
Title: Production of naphthalene
IPC: C07C5/387
Filed: 1969-11-05
Abstract: 1,235,817. Pyrolysis of indene homologues. RUTGERSWERKE A.G. 5 Nov., 1969 [7 Nov., 1968], No. 54138/69. Heading C5E. Naphthalene and by-products are produced by pyrolysing indene homologues at 550-800 C., optionally in the presence of a catalyst, e.g. nickel, zinc oxide-chromium oxide, or tin on broken pottery. The feed is suitably an oil fraction rich in indenes and having a boiling range from 180-250 C., preferably 205- 235 C. By-products, from which product naphthalene can be easily separated, include the following: (1) indene and methylindenes produced by dealkylation of higher indenes; (2) chrysenes produced by condensation; (3) methylnaphthalenes, produced either by ring extension of dimethylindenes or by transalkylation. At least part of the methylnaphthalene may undergo simultaneous dealkylation to yield further naphthalene.
Patent GB-1438220-A (GB)
IPC: B30B11/02
Filed: 1974-12-18
Abstract: 1438220 Forging gears BAYERISCHES LEICHTMETALLWERK GRAF BLUCHER VON WAHLSTATT KG 18 Dec 1974 [20 June 1974] 54598/74 Heading B3H An apparatus for forging helically toothed gears, especially bevel gears, has an ejector 10 to which a rotational movement is applied during its axial movement. The ejector has a projection 16 at its leading end to key it to the forged blank which is thus rotated during ejection. The rotation is produced by a transverse pin 14 on the ejector engaged with helical slots 15 in a fixed guide bush 12. Alternatively the ejector may have a threaded configuration at its lower part. The forging is effected between dies 1, 6 of which the upper die has a cavity 2 to form a boss (3), Fig. 4 (not shown), on the gear.
Patent GB-1460958-A (GB)
Title: Apparatus and method of checking the planarity of cold-rolled ferromagnetic strip
IPC: G01B7/28
Filed: 1974-12-18
Abstract: 1460958 Checking planarity of cold-rolled ferromagnetic strip VEREINIGTE OSTERREICHISCHE EISEN-UND STAHLWERKE ALPINE MONTAN AG 18 Dec 1974 [15 Jan 1974] 54791/74 Heading G1N The planarity of cold-rolled ferromagnetic strip 1 is checked by pulling the strip over a pair of spaced supports 2, 4 (or 3, 2), subjecting the strip to magnetic forces by means of a plurality of solenoids 5 distributed across the width of the strip and energized by a predetermined A.C. current, and measuring the resultant deflection of the strip by measuring the voltages across the solenoids. The voltages across the solenoids 5 are rectified by full wave rectifiers 13. Each voltage is divided at 10 by the mean or sum of the voltages derived at 11, and the respective quotient is displayed at 16, the mean or sum being displayed at 14. The outputs of the quotient forming means 10 may also used for control of the cold-rolling rolls. The solenoids are mounted on a member 19 which can be moved towards and away from the strip 1 by a hydraulic actuator 21 which is controlled by the controller 28 to maintain a constant mean distance as measured by device 11 between the solenoids and the strip. If the voltage across any solenoid exceeds a predetermined value, indicating that the solenoid is too near the strip, a device 31 causes controller 28 to lower the member 19 to its lowermost position. Each solenoid is movable along member 19 and carries a pointer 35 co-operating with a scale on the member. Each solenoid may comprise a further winding energized from a D.C. source to increase the strip deflection. To overcome difficulties arising from non-linearity of the solenoid voltages due to saturation of the strip, the output voltages are preferably sampled for a part only of each voltage half cycle, the part including the time corresponding to the cross-over of the energizing current Figs. 7 to 11, (not shown).
Patent GB-1283985-A (GB)
Title: Hologram storage
IPC: G03H1/04
Filed: 1969-11-10
Abstract: 1283985 Magneto-optical data storage arrangements RCA CORPORATION 10 Nov 1969 [12 Nov 1968] 54923/69 Heading H3B [Also in Divisions C7 and H1] In an optically accessible data store, information is written as a magnetic hologram and is read out by reconstruction of the hologram. Writing.-Fig. 3 shows a laser 12 whose output is split by partially transmitting mirror 14 into two beams, one passing through a deflection system 16 and the other being enlarged and passed through a sheet 26 having an array of opaque and dark areas corresponding to the data to be stored, Fig. 5 (not shown). Areas of a thin film 10 of uniformly magnetized manganese bismuth are exposed to the deflected beam 32 and the data carrying beam 34, the areas being selected by the position of a mask 28 having an aperture 30. To avoid the time delays required to position the mask, a second deflection system may be used in beam 34, the area of the film being selected by appropriate control of the two deflection systems instead of by the mask. The intensity of the hologram heats parts of the film above its Curie temperature, 360‹ C., thus destroying the uniform magnetization and recording the hologram. A method of manufacturing the film is described (see Division C7), the magnetization produced being normal to the film surface. With films whose magnetization is parallel to the surface, the reconstructed image is stated to be weaker. The film may be heat biased to near its Curie temperature during writing by use of an oven, or by incident non-coherent infra-red radiation. Readout.-Readout may be by transmitted or reflected light from the same or a different laser, the reconstructed data being detected by an array of photocells, Figs. 4, 6 (not shown). Plane polarized light may be used, but it is stated that the hologram may be reconstructed using non-polarized monochromatic light. For readout by transmitted light, the thickness of the film is preferably 2/α, where α is the absorbtion coefficient of the film, giving a value of 700 Š for manganese bismuth. For reflected light readout, a thinner film may be used. Because the film is thin, transmitted light readout is possible using a wavelength different from that used in writing, and hence a pulsed ruby laser may be used in writing and a c-w helium neon laser used in readout. Erasure.-Data may be erased by saturating the film 10 using electromagnet 56, Fig. 3. Alternatively, parts of the film may be heated above the Curie temperature to render the magnetization random, and a subsequent writing operation is accompanied by a weak field so that areas heated above the Curie temperature by writing are aligned with the field. Erasure may also be achieved by a decaying alternating magnetic field.
Patent GB-1148228-A (GB)
Title: Improved urania sol forming method
IPC: C01G43/025
Filed: 1967-12-04
Abstract: 1,148,228. Urania sol. UNITED STATES ATOMIC ENERGY COMMISSION. 4 Dec., 1967 [10 Feb., 1967], No. 55030/67. Heading C1A. A stable urania (UO 2 ) sol is made by forming a basic uranyl formate slurry in the presence of formic acid and a dispersant acid, said slurry being 0À15 molar in U and having a formate/U ratio of 1À0 to 1À5, reducing the uranium (VI) to uranium (IV) by bubbling hydrogen, in the presence of a palladium-on-thoria catalyst, through said slurry and then removing the catalyst. The basic uranyl formate slurry is preferably made by slurrying UO 3 .H 2 O with formic acid and nitric acid, the preferred nitrate/ uranium ratio being about 0À25, the reaction being carried out at room temperature and one atmosphere pressure. The sol may be used to form UO 2  fragments or microspheres as given in Examples V and VI.
Patent GB-1149208-A (GB)
Title: Horizontal spinning ring and traveller
Inventor: WAYSON ANDREW JOHN
IPC: D01H7/60
Filed: 1966-12-09
Abstract: 1,149,208. Spinning ring and traveller. MERRIMAN, Inc. 9 Dec., 1966, No. 55234/66. Heading D1D. In a ring and traveller combination the ring comprises a vertical web 4 carrying a horizontal ring 6, the surface 30 between the underside 28 of the interior of the ring and the interior surface 32 of the web being smoothly curved at 30 and the traveller is provided with a covering of synthetic, low friction material such as nylon. In use the traveller ball 19 of low friction material runs on the curved surface 30, and is the only portion of the traveller touching the ring. The position of ball 19 on surface 30 depends upon the particular forces acting on the traveller. If the inner end of the traveller is pulled off the ring the outer end 18 of the traveller also covered with antifriction material engages the outer vertical surface of the web 4. The ring may be of steel or sintered metal and is lubricated by wicks 12, 14 from a felt filled reservoir 8.
Patent GB-1360076-A (GB)
Title: Composite materials containing treated carbon
IPC: C04B20/02
Filed: 1971-12-01
Abstract: 1360076 Surface modified carbon composites PROGIL 1 Dec 1971 [31 Dec 1970] 55826/71 Heading B2E [Also in Division Cl]  A composite material, e.g. a laminate, consists of a heterogeneous assembly of two or more material of which at least one forms a continuous medium (the matrix) and the other serves as a reinforcement and consists of or comprises carbon in which at least a part of the surface has been subjected to cathodic sputtering caused by ionic bombardment. The treated carbon may be in the form of fibres, fibrils, films, tapes or sheets. The matrix is preferably a thermosetting resin such as a bisphenol A diepoxide resin or a triehoxidized trimethylolpropane cured with diethylenetriamine. The treatment of the carbon is effected by using the carbon article as the cathode in the presence of a discharge gas and a direct current voltage of from 500 to 10,000 volts. The discharge gas may be a rare gas such as argon or krypton or a reactive gas, e.g. oxygen or nitrogen, or water vapour. Exemplified composites are carbon sheets treated by bombardment and united with a thin layer of bisphenol A diepoxide resin cured with diethylenetriamine at room temperature and 80C, and carbon fibres treated by bombardment admixed with triepoxidised trimethylolpropane and cured with diethylenetriamine.
Patent GB-1497672-A (GB)
Title: Bottle racks particularly racks for wine bottles
IPC: A47B73/00
Filed: 1974-12-31
Abstract: 1497672 Bottle racks NEWTON & TAYLOR (PTY) Ltd 31 Dec 1974 [22 Jan 1974 4 Sept 1974] 56243/74 Heading A4H A rack for wine bottles is formed from interengageable elements 1, each element 1 having concave formations 2 in its periphery that co-operate with formations in adjacent elements to define an apertured panel 3, the panels 3 being spanned by at least one terminal lateral or base element 11 having at least one concave formation 12 to complete the end apertures. Elements I have interengaging dovetail formations 7, 8 and interengaging lugs 9 and slots 10. Two panels 3 are connected transversely by spigots 4 and sockets 5. Elements 11 may include further apertures.
Patent GB-1273833-A (GB)
Title: Improvements in and relating to organs
Inventor: JONES JOHN ROBERT
IPC: G10B3/10
Filed: 1969-11-19
Abstract: 1,273,833. Organs. RUSHWORTH & DREAPER Ltd. 19 April, 1971 [19 Nov., 1969], No. 56618/69. Heading G5J. In a soundboard of a pipe organ comprising a table 10, a top board 12 and a slider 14 provided with alignable holes 16, 15, 20, respectively and in which each channel 18 corresponds to one note and the holes correspond to different stops, each of the holes 15 in the top board 12 is provided with a lead washer 26 which, by virtue of its weight, establishes a substantially leak free connection between the slider and the top board. The washer is secured to the hole 15 by a diaphragm 24 of thin leather or plastics material. A plastics washer 28 may be attached to the underside of the washer 26 to reduce friction with the slider. Plastics or felt washers 22 surround the holes 16 in the table to provide a support for the slider. The slider may be a plastics or smooth hardboard sheet.
Patent GB-1208117-A (GB)
Title: Coupling components for azo dyestuffs
IPC: C07C237/00
Filed: 1967-12-15
Abstract: 1,208,117. Amines. KEWANEE OIL CO. 15 Dec., 1967 [19 Dec., 1966], No. 57051/67. Heading C2C. [Also in Division C4] The invention comprises compounds of the formula where R 1  is hydrogen or a methyl radical, R 2  is and alkyl radical having 1-6 carbon atoms, R 3  is hydrogen, an alkyl radical having 1-6 carbon atoms or a hydroxy - terminated alkyl radical of from 2-6 carbon atoms and n is an integer having a value from 2 to 6. In an example N - ethyl - N - #[N<SP>1</SP> - (#<SP>1</SP> - hydroxyethyl)] carbamylethyl aniline is obtained by heating N - ethylamine with methyl acrylate in the presence of acetic acid and heating the product N - ethyl - N - # - carbomethoxy - ethylaniline with ethanolamine.
Patent GB-1204687-A (GB)
Title: Method of cooling granular material by means of fluidization and equipment for carrying out this method
Inventor: KOUCKY KOSEF
IPC: C04B5/00
Filed: 1967-12-19
Abstract: 1,204,687. Cooling particulate material. VYZKUMNY USTAV ANORGANICKE CHEMIE. 19 Dec., 1967 [19 Dec., 1966], No. 58174/67. Heading F4U. In apparatus for cooling particulate material, e.g. sand, the material is fed through an inlet 1 at one end of a trough 2 wherein substantially all the material forms a fluidized layer moving longitudinally to an outlet 6 at or near the floor level, and a vaporizable cooling liquid is sprayed on to the surface of the layer through a pipe 4 to augment its humidity. The pipe 4 may be situated in the upstream half of the trough and the permeable floor 7 of the apparatus comprises two superposed, perforated sheets of differing sized perforations. The trough is at least 2À5 longer than wide and the floor is downwardly inclined towards the material outlet 6. The inlet 1 may be replaced by a circular unit for the removal of fines.
Patent GB-1411610-A (GB)
IPC: A61L15/07
Filed: 1972-12-18
Abstract: 1411610 Laminated binding material H G KUHN 18 Dec 1972 [28 Dec 1971] 58238/72 Heading B5N [Also in Divisions A5 and E2] A flexible binding material comprises a tubular envelope of generally flat cross-sectional configuration formed with opposed, longitudinally extending walls and having an inner surface carrying the first of a pair of reactive materials which when they combine react to harden, this first reactive material being longitudinally distributed over the inner surface of said envelope, and having the second reactive material longitudinally distributed in the interior of the envelope but separated from the first reactive material by longitudinally extending separating layers which suffice to prevent combination of the reactive materials when said envelope is in an unstretched state, but which respond to stretching of the envelope when the latter is wrapped around a body by rupturing, thus permitting the reactive materials to contact each other and harden. In the embodiment shown, 1 is a glass fibre retaining means saturated with a curableresin, e.g. an unsaturated polyester resin and situated in an envelope 10 made up of an inner layer 12 of plastics foil and an outer layer 14 of a woven elastic material, the plastics foil layer 12 being made up of a pair of strips 2 joined together at their side edges, e.g. by welding, the elastic layer 10 being made up of a pair of layers 4, secured to the strips by adhesive coatings 3. The inner surfaces of the strips 2 are coated with hardener 5 for the curable resin, e.g. a peroxide for the curable resin and are separated from the retaining means 1 by separating means 6 composed of a pair of apertured strips of sheet material 6 joined by an adhesive layer 7 to a covering sheet material 8 which is rupturable upon stretching of the envelope. The glass fibre reinforcing means is made up of monofilaments elastically connected to each other by a binder and the polyester may be derived by esterifying diols having up to six carbon atoms with a mixture of maleic and phthalic anhydrides and may be admixed with an acrylic or methacrylic acid ester or an epoxy resin. The plastics foil layer 12 may be a polyester optionally coated with a polyethylene foil. The elastic layer 10 may comprise a warp of polyurethane fibres or multi- or mono-filaments of polyamide or polyester and a welt of polyester or polyamide monofilaments. The adhesive layer 3 is a transparent, high molecular, physiologically compatible and biologically stable adhesive, e.g. polyvinyl isobutyl ether applied in dissolved or dispersed form. The hardener layer 5 may comprise a peroxide, e.g. benzoyl peroxide and a binder therefore, e.g. polyvinyl acetate. The apertured sheet material 6 may be a transparent, saturated, polyester and the covering sheet material 8 a urea-formaldehyde resin, the adhesive 7 being preferably a polyurethane. In a preferred embodiment, an additional layer 20 of plastics is provided.
Patent GB-1454263-A (GB)
Title: Manufacture of ceramic articles
IPC: C04B41/89
Filed: 1972-12-19
Abstract: 1454263 Glazing ceramics K W HILTON 13 Dec 1973 [19 Dec 1972] 58652/72 Heading C1M In a method of manufacturing a ceramic article, an unfired ceramic article is formed (A) and then subjected to a drying operation C in which the moisture content in the unfired article is reduced, the dried but still unfired article is decorated (D), the decorated article is coated with a glaze medium (E), and finally the decorated and glaze-coated article is fired (F) in a kiln to fire the ceramic and fuse the glaze in a single operation. The article may be tableware, for example a mug or cup (the handle being attached (B) before the drying). In the drying operation the moisture content is preferably reduced to not more than 10%, e.g. by warm air jets. The decoration may be by screen printing (Fig. 2, not shown), and the glaze, in aqueous form, applied by dipping or spraying.