baber/WOPTO huggingface dataset:
Patent GB-1465580-A (GB)
Title: Recording tape cartridge
IPC: G11B15/16
Filed: 1974-05-02
Abstract: 1465580 Tape cartridges HEWLETTPACKARD CO 2 May 1974 [17 May 1973] 44840/74 Divided out of 1465579 Heading B8M Part B A recording tape cartridge, for use in a tape recording and/or playback apparatus of the type disclosed in Specification 1,465,579, which has an electro-optical tape detector, comprises a recording tape 21, Fig. 1, provided with at least one aperture 25 therethrough at a location along its length, and a reflector 30 within the cartridge so that, in use, light projected from light emitting means of the detector and received by the reflector, partly via said aperture, is reflected to photodetectors 12 of said detector, the reflector 30 having a dimension parallel to and greater than the width of the tape. The cartridge has a metal, or opaque or transparent plastics base 31, and an opaque or transparent plastics cover (36), Figs. 6 to 9 (not shown), secured together by bonding or screws. The reflecting means is a right-angled prism 30 bonded to the base 31 or integrally formed with the cover (36). A magnetic tape 21 has two closely spaced apertures 25, 26 at each desired location, and at least adjacent each end. A light emitting diode of the detector produces via a lens 13 a collimated annular beam 22, 23 enclosing a beam 24 converging to a focus at the tape. When the tape reaches a position at which aperture 25 is aligned with beam 24 and aperture 26 is aligned with a centre one of three photodetectors 12, light from beam 24 passes through aperture 25 and is collimated by a lens (33), Fig. 3 (not shown), on the face 32 of prism 30 to be reflected through 180 degrees therein and emerge through a centre one of three further lenses (34) on face 32 as a convergent beam passing via aperture 26 to the centre photodetector 12. Upper 22 and lower 23 portions of the annular light beam are partially interrupted by edge portions of the tape and are reflected through 180 degrees in prism 30 to emerge via respective said lenses (34) or beams respectively convergent on top and bottom photodetectors 12. Detection of the lower beam portion 23 indicates the presence of a cartridge, and detection of the centre beam 24 indicates that a particular position on the tape has been reached. The detection of the upper beam portion 22 is intended to indicate that either the tape has information stored thereon or is blank, and the cartridge has a manually movable shutter 40, Fig. 4, selectively locatable to allow or block passage of the upper beam portion from the prism 30 to the top photodetector.
Patent GB-1401790-A (GB)
Title: Presensitised plates and their use in photopolymer printing plates
IPC: G03F1/00
Filed: 1972-09-29
Abstract: 1401790 Photo-resist materials and processes BADISCHE ANILIN-2 SODA-FABRIK AG 29 Sept 1972 [1 Oct 1971] 44980/72 Heading G2C A photo-resist material for producing printing plates comprises a support, a photopolymerizable layer which is polymerized by light between 320 and 450 mÁ and a layer of a binder in which are dispersed conjugated diyne compounds which photopolymerize and change colour on exposure to light of less than 320 mÁ. The material may be imagewise exposed to light less than 320 mÁ to produce a negative, polymeric coloured image which is fixed by heating or solvent treatment to produce an image which absorbs at least 90% of the light between 320 and 450 mÁ, uniformly exposing to light between these wavelengths to polymerize the exposed areas of the photopolymerizable layer and then removing the entire diyne layer and the unexposed areas of the photopolymerizable layer to produce a positive printing plate. Alternatively, the 2 exposures may be of the same wavelength range (e.g. 305-450 mÁ), the imagewise exposure being too short to affect the photopolymerizable layer. Specified diynes are urethanes of hexadiyne-2,4-diol-1,6 and specified photopolymerizable materials are ethylenically unsaturated monomers in polyamide, polyester or styrene/maleic acid copolymer binders. Negative printing plates are produced by imagewise exposure to light between 320 and 450 mÁ.
Patent GB-1447758-A (GB)
Title: Devices for use in deriving power from the sea
IPC: F03B13/18
Filed: 1972-09-29
Abstract: 1447758 Utilizing wave energy J R BICHARD 18 Oct 1973 [29 Sept 1972] 45018/72 Heading F1S A device for deriving power from the sea, which is suspended from a buoyant body (not shown) and submerged in the sea, comprises a hub, 10, Fig. 1 or 21, Fig. 3, rods 12 radiating from the hub and a flap or vane 13 similarly mounted through an edge thereof on each rod for swivelling movement between limits about the rod to present a different one of its two major surfaces at an acute angle to the horizontal to the thrust of the water on relative movement upwards and downwards between the device and the water in the direction of suspension of the device whereby the device rotates unidirectionally. In Fig. 3 an annular frame of the device is indicated at 20. A watertight casing 23 is suspended from the buoyant body (not shown) by two cables 24, 25. Within the casing 23 is a generator 27. In a modification (not shown) the hub is connected to a flexible drive rod which extends through a flexible metal sheath screwed to the underside of a buoy. In a further modification there is a rigid coupling between the buoyant body and the device
Patent GB-1139019-A (GB)
Title: Resolution of racemic steroids
Inventor: HUBNER MICHAEL
IPC: C07J75/00
Filed: 1967-10-04
Abstract: 1,139,019. Resolution of racemic steroid alcohols. JENAPHARM VEB. 4 Oct., 1967, No. 45130/67. Heading C2U. Racemic steroids containing at least one alcoholic hydroxyl group are resolved by esterifying them with an optically active compound of formula (wherein R 1  is acyl, and R 2  is alkyl, cycloalkyl, aralkyl or aryl) or functional derivative thereof, separating by fractional crystallization the obtained diastereoisomeric esters, and hydrolysing them. The examples describe the resolution of dl-3-methoxy-17#-hydroxy-estra-1,3,5- (10)-triene and of dl-17#-hydroxy-estr-4-en-3- one.
Patent GB-1070729-A (GB)
Title: Method of producing permanent magnets
Inventor: BLUME WALTER SCOTT
IPC: H01F1/113
Filed: 1963-11-15
Abstract: 1,070,729. Magnetic structures. LEYMAN CORPORATION. Nov. 15, 1963, No. 45225/63. Heading H1H. In a method of making a permanent magnet somewhat similar to that disclosed in Specification 860,220, anisotropic magnetic particles are admixed or dispersed in a non-magnetic matrix material and the admixture is divided into granules, these granules then being subjected to a shear force to form an elongated body whilst at the same time the particles are moved so that their axes are parallel or coplanar. The magnetic material may be Ba, Sr or Pb ferrite or single domain iron, the former being plate like and the latter elongated. The matrix may be a solid, semi-solid, or viscous liquid, and examples include rubber, resin, plastic elastomer or metal materials. In one example 16.76 1b. of barium ferrite is ground to single domain size, and 1À295 1b. of uncured rubber is softened by rollers. These are mixed at a temperature below 300‹ F., 25.5 gm. of wax and 6.5 gm. of stearic acid are added, and the admixture is granulated to a size which will pass a 20-mesh screen. The material is then passed through rollers providing a shear force and forming an extended sheet in which the particles are orientated. The rollers may rotate at different speeds. The sheets so formed may be stacked to form blocks. The sheets or blocks are then cured by a conventional vulcanizing process, e.g. heating for 12 minutes at 278‹ F., cut to shape, and magnetized to form a permanent magnet.
Patent GB-1522346-A (GB)
Title: Optical read-out system for video disc
IPC: G11B7/09
Filed: 1975-10-31
Abstract: 1522346 Determining and correcting tracking error in a video disc THOMSON-BRANDT 31 Oct 1975 [1 Nov 1974] 45473/75 Heading G1A [ Also in Division G3] In an optical read-out system for a video record using a read beam 18 of light from a laser 19, radiation passing through (or reflected from) the disc is received by a matrix of four photo-receptors a, b, c, d. The photo-detectors are arranged in pairs on either side of a plane containing the beams axis and tangential of the record's track. Photoreceptors a and c have a leading relationship relative to the beam and b and d have a lagging relationship. The outputs of the photo-receptors are processed via a system of transformer windings 28a, b, c, 29a, b, c as shown, to provide signals corresponding to: (a+b)-(c+d), i.e. amplifier 30; a+b+c+d, i.e. amplifier 33; and (a+c)-(b+d) i.e. amplifier 38. Alternatively a larger network of amplifiers, Fig. 3 (not shown), is used to provide the above signal combinations. The amplifier 30 controls a pair of windings 24a of an electromagnetic motor which moves a mirror 23 radially of the disc. Similarly the amplifier 33 causes movement tangentially of the disc. Finally the amplifier 38 provides an output proportional to the frequency modulated carrier signal bearing the video program information that has been stored on the disc.
Patent GB-1081937-A (GB)
Title: Cryogenic surgical probe
IPC: A61B17/00
Filed: 1964-11-09
Abstract: 1,081,937. Surgical probes. WESTING- HOUSE ELECTRIC CORPORATION. Nov. 9, 1964 [Nov. 27, 1963], No. 45582/64. Heading A5R. A cryogenic surgical probe comprises a tip portion 14, a vacuum chamber 12 for containing liquid nitrogen coolant to lower the tip portion to a pre-determined temperature, and an electrical circuit which generates heat in the tip portion for raising the temperature of the tip portion above the particular low temperature when desired. As shown, a switch 30 which is a separate foot switch or is on the probe, completes an electric circuit through a contact 46, a conducting layer 42, the tip portion 14 itself the probe casing, and a lead 28. An insulating layer 40 separates the conducting layer from making electrical contact with the tip portion except at the end 44 of the conducting layer. In an alternative embodiment, the conductive layer 42 does not make direct contact with the tip portion 14 and the electrical circuit is completed through the resistive layer 40 (or 62 Fig. 4, not shown). In a further embodiment, Fig. 5 (not shown), the tip portion is hollow and the conducting layer extends within the tip portion. The hollow tip portion may be open at the remote end or closed (as in Figure 5). In Fig. 1 (not shown), a probe, which is said to comprise prior art, is provided with an electrical heating element wound around the probe tip portion.
Patent GB-1091788-A (GB)
Title: Improvements in electrophotographic processes of information recording
IPC: G03G5/026
Filed: 1964-11-10
Abstract: 1,091,788. Electro-photographic processes. GENERAL ELECTRIC CO. Nov. 10, 1964 [Nov.15, 1963], No. 45723/64. Heading G2H. A method of producing images comprises imagewise exposing to activating radiation an electrically insulating thermoplastic layer containing a photo-sensitive substance to produce electrical forces therein, simultaneously or subsequently applying an electrical field to the layer and then heating the layer to deform it in accordance with the image. The invention also relates to a recording system comprising such a layer in contact with an electrically conductive backing, optical means for projecting an image on to the layer, electrical means for applying an electrical field across the exposed layer and heating means to deform the charged layer imagewise. As shown, a photo-sensitive, thermoplastic layer 4 on an electrically conductive backing 5 is imagewise exposed and then charged using electrode 9 and connecting the battery 10 to the backing 5. The layer is then heated to produce the image 14 preferably while the electrical field is still applied. Preferred photosensitive substances are halogenated hydrocarbons, fluorescein, phthalocyanines and polyvinyl halides. The electrically conductive layer is preferably a metal or a metal salt vacuum deposited on to a thermoplastic support over which the photosensitive, thermoplastic layer is applied. The image may be read out on a Schlieren system or used as a printing plate by inking the image. The image may be erased by further heating and resurrected by a short heat exposure. If the light exposure is conducted through a screen, an image with better resolution is obtained.
Patent GB-1520437-A (GB)
Title: Apparatus for automatically lining vessels expecially casting ladles
IPC: F27D3/00
Filed: 1975-11-17
Abstract: 1520437 Lining vessels SPRIBAG AG 17 Nov 1975 [22 Nov 1974] 45938/77 Divided out of 1520436 Heading F4B Apparatus for automatically lining a vessel as described in U.K. Specification 1,520,436 wherein the claims are directed to the fluid actuated lifting system for the vertically acting ram, which comprises a fixedly mounted piston 65, 66 and a displaceable cylinder 64.
Patent GB-1020514-A (GB)
Title: Reinforced heat resistant alloys
Inventor: TAYLOR TRISTRAM ALLAN
IPC: C22C47/08
Filed: 1962-12-07
Abstract: A metallic article comprising a matrix of a heat resistant alloy reinforced by fibres of another material of higher tensile strength is made by arranging the fibres in a metal container which is connected to a source of suction and closed by a diaphragm, pre-heating the container which is then immersed in the molten matrix alloy so that the diaphragm melts and infiltration takes place.  The fibres may be Mo, Ta, Nb, W, a Mo base alloy containing 0.01-0.04% C, 0.4-0.55% Ti, 0.06-0.09% Zr or ceramic materials such as TiC, SiC, Si3N4 and Al2O3.  The metal fibres may also be coated with SiC, TiC, MoSi2 produced by deposition from the vapour of a hydrocarbon and SiCl4 or TiCl4 or from methyl-trichloro-silane which produces SiC. The ceramic fibres may also be coated with Mo, Tu, Zr, MoSi2 or carbides.  The infiltrant matrix alloy may be a Ni based alloy containing 16-21% Cr, 5% max. Fe, 1% max. Si, 1% max. Mn, 0.5% max. Cu, 0.2-0.6% Ti, 0.08-0.15% C.
Patent GB-1287206-A (GB)
Title: Miniaturized flow control valve
Inventor: RENZI NICHOLAS ALBERT
IPC: F16K31/40
Filed: 1970-09-29
Abstract: 1287206 Valves AVCO CORP 29 Sept 1970 46267/70 Heading F2V  A piston 22 loaded by a spring 35 towards a seat 26 is moved relative thereto by the fluidpressure differential thereon which differential is controlled by a restriction 28 and a spring- loaded solenoid-operated pilot valve member 34 co-operating with aperture 32 in the piston. At low flow rates the differential may not be sufficient to close the piston in which case the solenoid-operated pilot valve positively seats the piston.
Patent GB-961511-A (GB)
Title: Device for detaching the web from the doffer rollers of carding machines
IPC: D01G15/46
Filed: 1962-12-07
Abstract: 961,511. Carding engines. F. REITERER, WINDISCH, and J. NIFENECKER. Dec. 7, 1962 [April 18, 1962], No. 46310/62. Heading D1N. Fibre webs are detached from a carding engine doffer by a combination of three rollers the first of which co-operates with the doffer, the second co-operates with the first roller and the doffer, and the third co-operates with the second roller. Although the second and third rollers are preferably smooth, they may have surfaces formed to bring about adhesion of the web. It is desirable that the first roller has a roughened, grooved or serrated surface or raised portions upon it such as needle-like members, fins or small blades which latter may be rigid, flexible or pivoted. The fins may be caused to set up an air flow that assists in detachment of the web. In the form shown, the first or initiating roller 3 is a perforated tube, the second or conveying roller is indicated at 4 and the third or tensioning roller at 5. The three rollers do not make contact and do not compress the web, their speeds are adjustable and the positioning of rollers 3 and 5 is also adjustable.
Patent GB-1035466-A (GB)
Title: Process for preparing additives for lubricating oils and improved additives preparedthereby
IPC: C08F8/00
Filed: 1964-11-13
Abstract: A lubricating oil additive is prepared by dispersing a basic alkali or alkaline earth metal compound in a solution of an alkali or alkaline earth metal sulphonate in a diluent oil and passing carbon dioxide through the solution which is maintained at a temperature above 100 DEG  C. in the presence of a condensation product of an alkyl or aryl-alkyl phenol, an aldehyde and urea. The condensation product may have the formula R-Ar-(OH)-CHR1-NH-CO-NH-CHR1-Ar(OH)-R where R is an alkyl or aryl-alkyl group, Ar is an aromatic hydrocarbon nucleus and R1 is hydrogen or an alkyl group.  The basic compound may be an oxide, hydroxide or hydrated hydroxide.  The lubricating oil may be a mineral, synthetic, animal or vegetable oil. The composition may contain ash-free dispersant additives which may be (1) obtained by reacting a phosphosulphurized hydrocarbon which has been hydrolysed and neutralized with either an alkylene oxide or a derivative of carbamic acid, e.g. a carbamate, urethane or urea; (2) an alkenyl dicarboxylic acid imide of formula <FORM:1035466/C4-C5/1> where R is an alkenyl radical, e.g. that derived from a C2-C6 mono-olefin polymer, R1 is hydrogen or an alkyl group, R11 is a methylene or ethylene group which may or may not be substituted with C1-C4 alkyl groups, R111 is an alkylene radical and x is an integer from 1 to 6 or (3) obtained by the polymerization of partial or complete esters of alpha-unsaturated mono- or di-carboxylic acids (whose free acid functions may be alkoxylated) and aliphatic, cyclic or aromatic alcohols or a vinyl acetate or styrene; the charge to said polymerization may include other monomers containing polar oxygen or nitrogen atoms, e.g. maleic anhydride or N-vinyl pyrrolidone, or cross linking agents, e.g. divinylbenzene.
Patent GB-1372993-A (GB)
Title: Air or gas venting valve for liquid filled systems
IPC: F16K24/04
Filed: 1971-10-07
Abstract: 1372993 Valves LACREX-BREVETTI SA 7 Oct 1971 [8 Oct 1970] 46641/71 Heading F2V An air or gas venting valve for a liquid filled system, e.g. hot water heating system, comprises a chamber 9 containing rings 14 of a substance which allows air or gas to pass from the system through a passage 3 to vent openings 10, but when contacted by liquid from the system swells to prevent liquid flow to the openings 10. A closure screw 13 has a peg 12 which when in the assembled position shown, forces a ball valve 8 away from its seat and to one side of a bore 6. During replacement of the rings 14, the screw 13 is removed, whereby ball 8 engages its seat and prevents leakage from the system. A cap15, e.g. of plastics material, pressed over hexagonal portion 1<SP>1</SP> of the valve body, prevents accidental movement of the screw 13 and provides protection against dirt. A passage 17 in the cap prevents accumulation of condensed liquid.
Patent GB-1198280-A (GB)
Title: Production of Antibodies
IPC: C07C53/128
Filed: 1967-10-12
Abstract: 1,198,280. Immunising animals. LABORATOIRES J. BERTHIER S.A. 12 Oct., 1967 [14 Oct., 1966; 9 Jan., 1967], No. 46667/67. Heading A5B. A method of producing antibodies in warmblooded animals other than humans comprises administering to the animals an antigen and dipropyl acetic acid or a carboxyl-group-substituted derivative thereof, e.g. the sodium salt, amide, ureide or choline salt. Specified antigens are paratyphoid and pig erythrocytes (in rabbits)
Patent GB-1110108-A (GB)
Title: Improvements relating to vehicle guidance systems
Inventor: CODD HAROLD ADAM
IPC: G05D1/02
Filed: 1964-11-16
Abstract: 1,110,108. Road traffic signals. ELLIOTT BROS. (LONDON) Ltd. 7 Oct., 1965 [16 Nov., 1964], No. 46673/64. Heading G4Q. [Also in Division E1] Guidance lights are arranged in a road surface and energized in sequence to produce the visual effect of a wave of light moving in the same direction as the traffic. In one example, Fig. 2 (not shown), the guidance lights are arranged round a roundabout and controlled by a programme unit supplied with information from traffic detectors at the entrance and exit of each traffic lane in the roads feeding the roundabout. The speed of the wave of light may correspond to a preferred traffic speed or to a speed limit and may vary along a traffic path (e.g. the spacing of the lights may vary).
Patent GB-1361799-A (GB)
Title: Process for purification of phosphoric acids
IPC: C01B25/237
Filed: 1971-10-07
Abstract: 1361799 Purification of phosphoric acid OCCIDENTAL PETROLEUM CORP 7 Oct 1971 [30 Oct 1970] 46769/71 Heading C1A Crude aqueous phosphoric acid solutions containing up to 30% by weight P 2 O 5  and as impurities organic compounds, iron, aluminium, silicon, sulphate and fluoride ions is purified by contacting with at least one water-immiscible primary amine dissolved in a water-immiscible organic solvent and separating the aqueous phase containing the phosphoric acid. Suitable primary amines contain at least 7 carbon atoms in the hydrocarbyl group which may be saturated or unsaturated aliphatic or aromatic in nature. If desired the extractant solution may also contain a water-immiscible secondary amine. Solvents specified include kerosene, mineral spirits, benzene, naphtha, xylene, toluene, nitrobenzene, carbon tetrachloride, chloroform and trichlorethylene. The solubility of the impurities in the amine/solvent mixture may be increased by addition of a C 6 -C 20  monohydric aliphatic alcohol or of tributyl phosphate or 1-fluorohexane. The amine/solvent system may contain up to 50% amine. The loaded amine/solvent may be regenerated by (a) addition of an acidic alkali metal or ammonium halide to form an amine hydrohalide which in turn may be caused to react with a base, e.g. an alkali-metal hydroxide or ammonia to liberate the amine, (b) treatment with a mineral acid such as hydrochloric, sulphuric or nitric acid followed by reaction with a base to liberate the amine from the amine salt, or (c) direct treatment with a bsae, the impurities passing into the aqueous phase. The purification is preferably carried out in counter-current in a multi-cell apparatus, fresh impure acid being brought into contact with impurity laden amine/solvent, and the almost purified acid contacting fresh amine/solvent.
Patent GB-1278356-A (GB)
Title: Grinding machine
IPC: B24B5/307
Filed: 1969-09-24
Abstract: 1278356 Grinding HEALD MACHINE CO 24 Sept 1969 [27 Sept 1968] 46973/69 Heading B3D In a machine for grinding an internal surface of revolution on a workpiece, e.g. the inner race of a ball-bearing, workpieces in a shoot 22 are individually fed to a grinding station by a first support member 24 and an escapement device 37, the member and device being rotatable about axis A when an air cylinder 38 is actuated. A workpiece fed to the grinding station ejects a finished workpiece. At the grinding station, the workpiece is located by the member 24, a further support member 26 and a resilient member 28, and is clamped between the nose 48 of a spindle 12 and a plate 33 by means of the plate being moved by air pressure relative to a ring 34 towards the spindle. The ring 34 is mounted in a bearing 35. The plate and spindle are rotated about the spindle axis by a motor via belt and pulley arrangements. The support member 24 is accurately positioned by a stop member 31 contacting a stop surface 32. A gauge 21 includes two resiliently mounted arms 52, 53 and constantly measures the diameter of the internal surface 14 and causes automatic control of grinding-wheel 16. A dressing apparatus 37a is provided. The shoot is mounted in a housing 11 or locating blocks 39, 41 and 42 and can be replaced by another shoot for different size workpieces. The support members 24, 26, the nose 48, and the clamping plate 33 will then also be changed.