baber/WOPTO huggingface dataset:
Patent GB-1406431-A (GB)
Title: Filter material
IPC: D04H1/74
Filed: 1971-11-04
Abstract: 1406431 Non-woven fabrics MYSON BROOKS LTD 27 Oct 1972 [4 Nov 1971] 51278/71 Heading D1R A non-woven filter comprises at least 50% halofibres i.e. synthetic polymer fibres in which at least 85% of the monomer units are vinyl halide, the fibres being further characterised by a tenacity of at least 2.5 gms/denier, preferably 2.9 gms/denier, an elongation at break of at least 30% and not more than 5% shrinkage at 110C. Specified fibres are syndiotactic polyvinyl chloride, a vinyl bromide copolymer and a vinyl chloride-acrylonitrile copolymer. Up to 50% polyester or modacrylic fibres may be used. The fibres preferably have a zig-zag or helical crimp and are 70-100 mm long and of 10 to 60 denier. The fibres are airlaid or carded to form a lofted i.e. non dense web. The web is sprayed or impregnated with a resin e.g. styrene-butadiene, styrene-butadiene-acrylonitrile, ureaformaldehyde or melamine formaldehyde. Preferably the resin is applied as an aqueous dispersion and crosslinked by curing at a temperature e.g. 94C below the shrinkage point of the fibres. Antimony trioxide may be added to the resin to flame proof the product.
Patent GB-1143024-A (GB)
Title: Improvements in or relating to hinge means
Inventor: IDE DEREK GARWOOD
IPC: E05D1/04
Filed: 1967-11-13
Abstract: 1,143,024. Hinges; roof lights. T. & W. IDE Ltd. 13 Nov., 1967, No. 51539/67. Headings E1R and E2F. A hinge,particularly for use on rooflights provided with vertical side shutters, comprises a guide rail 11 carried by or formed integrally with a first member 8, a pivot element 13 mounted on the guide rail and presenting a rounded bearing surface 14 which cooperates in sliding contact with one face of a projection 16 carried by or formed integrally with a second member 6, the second member theseby 'being pivotable about the pivot element. The first member 8 may be provided with a wall 15 so spaced that, during pivotable movement, the other face of the projection 16 cooperates in sliding contact therewith. The first member may comprise an upper horizontal frame element of an open rectangular framework forming, or incorporated in, a vertical side of a rooflight and may be formed with two flat horizontal surfaces 19, 20 arranged to support sheets of glass or other glazing material 1, 2; the second member comprising a shutter or other member of obturating the opening defined by the framework. The first and second members may be made of aluminium.
Patent GB-1293829-A (GB)
Title: Production of 5-benzyl-3-furanmethanol and intermediate compounds used therein
Inventor: TREVES GINO ROBERT
IPC: C07C29/42
Filed: 1970-10-30
Abstract: 1293829 2 - Benzylidene - 4 - hydroxy - 4- hydroxymethyl - tetrahydrofuran and benzylfuranmethanol therefrom FMC CORP 30 Oct 1970 [31 Oct 1969] 51747/70 Heading C2C The invention comprises 2-benzylidene-4- hydroxy - 4 - hydroxymethyltetrahydrofuran, its conversion into 5-benzyl-3-hydroxymethylfuran by heating preferably in the presence of a strong base to a sufficiently high temperature to eliminate water and its preparation by cyclizing 5 - phenyl - 2 - hydroxymethylpent-4- yne - 1,2 - diol or 5 - phenyl - 2 - hydroxymethyl- 3-yne-1,2-diol.
Patent GB-1432867-A (GB)
Title: Centrifugal pump
IPC: F04D29/42
Filed: 1973-11-07
Abstract: 1432867 Centrifugal pumps KLEIN SCHANZLIN & BECKER AG 7 Nov 1973 [8 Nov 1972] 51774/73 Heading F1C A centrifugal pump comprises an annular or volute delivery casing 5 encircling the impeller 2 and disposed within an outer casing 1, the interior of the delivery casing defining a delivery chamber communicating with the output zone of the impeller, and the exterior of the delivery casing defining with the interior of the outer casing an inlet chamber 12 including a generally conical inlet portion 6 leading to the impeller eye. The outer casing 1 has inlet and outlet branches 3, 4 whose axes lie in a common plane normal to the impeller axis, the inlet branch 3 communicating with the inlet chamber 12 and the outlet branch 4 being connected to the delivery chamber via a conduit 8 extending through the inlet chamber. Sealing rings such as 10 are provided at each end of the conduit 8. The branches 3, 4, which may be at 180 degrees to one another as shown or at any other angle within the common plane, are interchangeable in function. More than two branches may be provided, to allow a choice of alternative positions for the inlet and outlet branches, unused branches being blanked off, or to allow the use of a plurality of inlet branches or outlet branches, additional conduits 8 and co-operating delivery openings in the delivery casing 5 being provided in the latter case. The outer casing 1 is of generally spherical or spheroidal form.
Patent GB-1364739-A (GB)
Title: Method of producing anhydrous hydrofluoric acid
IPC: C01B7/19
Filed: 1971-11-08
Abstract: 1364739 Anhydrous hydrofluoric acid; metal ammonium fluorides UGINE KUHLMANN 8 Nov 1971 51831/71 Addition to 1235512 Heading C1A Anhydrous hydrofluoric acid is produced by reacting ammonium difluoride with a fluoride of one of the metals Cd, Be, Ga, Pb, Sc, Hf and Sb to produce hydrofluoric acid and ammonium fluometallate and decomposing the latter into ammonium fluoride and the metal fluoride which is recycled. The process is otherwise as described in Specification 1,235,512.
Patent GB-1200114-A (GB)
Title: Electrical circuit arrangement for ascertaining the ratio between the amplitude of two analog signals
IPC: G06J1/00
Filed: 1967-11-15
Abstract: 1,200,114. Ratio circuit; selectric signalling. AMERICAN OPTICAL CORP. 15 Nov., 1967 [18 Nov., 1966], No. 52096/67. Headings G4G and G4H. [Also in Division G1] A dual beam spectro-photometer comprises a monochromatic source 14 directing light 76 through a motor driven chopper to a semitransparent mirror dividing it into beams 16a, 166 traversing cells 24, 28 containing reference and test materials to impinge on photo-cells 26, 30 whose periodic cophased output signals ER, ET are amplified and respectively applied to null detector 32 direct, and through amplifier 40 with feedback over variable stepped attenuator 42, and zero adjustment potentiometer 38. The detector output represents the amplitude difference ER #Eo of the inputs in magnitude and polarity, and is converted to frequency at 46 to operate reversible counter 44 (which may be e.g. binary digital or quinary-binary digital) operating the variable attenuator. The converter may comprise two voltage/frequency converters in parallel responsive to positive and negative signals respectively, to develop outputs varying in repetition rate with the input magnitudes (Figs. 2A, 2B, not shown). The amplifier and attenuator gain varies exponentially with the state of the counter and at balance it is shown that the count is a logarithmic function of ER/ET so that by Beer's law the test concentration is proportional to the registered count, which may operate a visual display 54 and printout 56. The comparison device may be applied to other voltage sources. The Attenuator may comprise (Fig. 3, not shown) plural serial binary resistive L-sections and quinary resistive # sections separated by unity gain isolating amplifiers of infinite input, and zero output impedances, switchable by mechanical or transistorized switches under control of corresponding binary/quinary counter sections representing in sequence units, tenths, hundredths, and thousandths. A modified attenuator (Fig. 4, not shown) comprises plural serially connected quinary and binary switchable sections comprising resistive # sections with complementary transistorized switching, the sections having constant input resistances for all switch conditions, controlled by a binary/quinary counter as before. In a further modification (Fig. 6, not shown) the thousandths, hundredths, and tenths sections comprise each a quinary and binary section, and the units a binary section, while each section has a higher load resistance than input resistance, while the input resistance of each section equals the load resistance of the preceding section. A mathematical analysis and design data for the attenuator are given.
Patent GB-1269648-A (GB)
Title: Hot reversing strip mill method and apparatus
Inventor: ADAIR JAMES RICHARD
IPC: B21B1/34
Filed: 1968-11-04
Abstract: 1,269,648. Making strip; rolling. UNITED ENG. & FOUNDRY CO. 27 Oct., 1969 [4 Nov., 1968], No. 52101/68. Headings B3A and B3M. Roughing and finishing passes are made on a workpiece in a single reversing rolling mill 10, the workpiece being coiled on one of two coilers 28 after the roughing passes so that the rolls of the mill can be changed and the finishing passes performed. Each coiler is housed in a furnace 26 so that the workpiece can be maintained at its rolling temperature during the roll-changing operation.  In operation, a heated slab is given several roughing passes in the mill, with the roller tables 35 and 46 level. When the slab is sufficiently reduced, it is coiled in strip form on one coiler 28 by tilting a roller table 35 upwardly. The work rolls of the mill are changed, in as little as three minutes, while the strip remains heated. The rolls are shifted on to rails on a movable trolley (Fig. 2, not shown) or turntable and are replaced by a set of finishing rolls. The strip is then uncoiled and subjected to a desired number of finishing passes, the strip being coiled on one or other coiler after each pass. A pinch roll assembly 41, a stripper 43, and a tilting roller 32 is associated with each coiler.
Patent GB-1124400-A (GB)
Title: Tire building machine
IPC: B29D30/24
Filed: 1966-11-22
Abstract: 1,124,400. Tyre building drums. GOODYEAR TIRE & RUBBER CO. 22 Nov., 1966 [23 Dec., 1965], No. 52241/66. Heading B7C. A tyre building drum substantially as disclosed in Specification 906,793 is modified in that the rigid segments 16 are positively locked in their radially outer position by cammed pins 60 in piston rings 58 engaging with cam surfaces 67 of the segments, the rings 58 being moved against springs 70 in response to, and only after, application of air pressure to the associated air bag 42 sufficient to move the segments substantially into their outer position.
Patent GB-1487339-A (GB)
Title: Methods of and apparatus for automatic yarn piecing
IPC: D01H13/00
Filed: 1974-12-03
Abstract: 1487339 Yarn piecing apparatus SACO LOWELL CORP 3 Dec 1974 [23 Jan 1974] 52312/74 Heading DID Yarn piecing apparatus comprises an auxiliary yarn supply, a yarn feeding tube for conveying yarn from the supply, an air suction storage tube for storing an end of the auxiliary yarn, the end when stored extending across an unenclosed space between the tubes, and yarn release air jet means adjacent the position of a portion of the end when extending across the space for imping- ing a jet of air against the extending yarn to remove the yarn from the storage tube and propel it towards a winding station. As shown, Fig. 1, mobile yarn piecing carriage 38 mounted on ring spinning frame 10 carries auxilliary yarn Y, spindle rotator 54, and means 56 for supplying an end of the auxilliary yarn, wrapping it about a bobbin 26, threading it through a traveller and extending it upwards to means 58 for joining it to roving issuing from rolls 14. Means 56 is lowered on and rotated by shaft 102. Fig. 4, until lever 112 abuts ring rail 34 and stop 88 abuts ring base 23. Yarn Y, threaded through tube 60 and sucked into tube 62, is removed from tube 62 and wrapped around bobbin 26 by an air jet from horizontal nozzle 64 which passes tangential to the bobbin. Yarn wrapping is assisted by a deflecting air jet from nozzle 66. Means 56 is retracted, so that depressor 68 held by a cam above the wrapped yarn is allowed to fall, and is then advanced so that depressor 68 abuts the ring and holds the yarn on the ring. An air jet from nozzle 70 then moves traveller 20 onto the yarn. Means 56 is raised, yarn running from tube 60, and means 58 joins the yarn to roving at rolls 14 and cuts the yarn, the end of yarn Y being re-sucked into tube 62.
Patent GB-1190259-A (GB)
Title: Improvements in Rotor Assemblies for a Rotor Craft
IPC: B64C27/32
Filed: 1967-11-22
Abstract: 1,190,259. Rotors for rotorcraft. BOLKOW G.m.b.H. 22 Nov., 1967 [1 July, 1967], No. 53255/67. Heading B7W. A rigid rotor for a rotorcraft comprises a rotor head 1 having bearing sleeves 4 in each of which is mounted rotatably for pitch change a rotor shank sleeve 5 rigidly attached to a rotor blade 8, the sleeve 5 having an outwardly facing shoulder 10 against which rests a clamping device 9 which undergoes pitch change movement with the sleeve 5, and to which is secured a laminated tension bar 11, the other end of which is secured to an element 12 mounted in the rotor head coaxial with the axis of rotation of the rotor. Where there are an even number of blades, at least four, the laminations of the tension bar from one blade may extend to the clamping unit of the opposite blade. The laminations of one tension bar may alternate with those of the other bars at the centre of the rotor head, where each lamination may be separated from the next by a low friction layer, e.g. a foil of P.T.F.E. Each blade may have a pitch change horn 18 for attachment to a known control rod and swash plate pitch change mechanism.
Patent GB-1137577-A (GB)
Title: Improvements in and relating to semiconductor devices
IPC: H01L21/762
Filed: 1966-11-29
Abstract: 1,137,577. Semi-conductor devices. INTERNATIONAL BUSINESS MACHINES CORP. 29 Nov., 1966 [12 Jan., 1966], No. 53268/66. Heading H1K. In a method of producing electrically isolated islands of monocrystalline semi-conductor material in a wafer by forming grooves, covering with an oxide layer, depositing a support layer of semi - conductor material, and reducing the thickness of the monocrystalline layer, an aperture is formed in the oxide layer before depositing the support layer to provide an electrical connection between the semi-conductor layer, and the thickness of the monocrystalline layer is reduced by electropolishing, which process stops automatically when the oxide layer in the channels is exposed. The grooves are formed in the surface of a wafer of monocrystalline silicon using a silicon dioxide and photo-resist masking and etching technique to surround the areas in which devices are to be formed. The oxide mask is removed and a new layer of oxide is formed over the surface including the grooves. One or more apertures are formed in the oxide layer at positions outside the device areas, and a support layer of polycrystalline silicon is grown on the surface, the support layer contacting the monocrystalline wafer at the apertures to form electrical connections. The monocrystalline layer is reduced in thickness by electropolishing, the current being passed from an electrode applied to the polycrystalline layer to the monocrystalline wafer via the electrical connections at the apertures. The electropolishing is continued until the oxide layer lying in the grooves is exposed. This isolates the device areas from each other and from the remainder of the wafer, thus stopping the electropolishing process. Transistors or diodes can be formed in the device areas by diffusion techniques using oxide masks, and conductive connections can be formed on an oxide layer.
Patent GB-1267948-A (GB)
Title: Improvements in blankets for protecting patients during transport
IPC: A61G1/01
Filed: 1969-10-31
Abstract: 1,267,948. Stretchers. P. A. A. MERIKALLIO. 31 Oct., 1969 [7 Nov., 1968], No. 53377/ 69. Heading A5X. [Also in Divisions A4, Bl, B2, El and E2] A blanket, for wrapping round an injured person, comprises a sheet of flexible material which is impermeable to wind and moisture and has a surface made to reflect thermal radiation, e.g. by metallic pigment, straps 5, having loops for the reception of two carrying poles, and ties 3 being secured to the sheet e.g. by two lines of stitching 4. The sheet may consist of one or several layers of woven or non-woven material e.g. of polyamide filament treated with dressing agents based on polyurethane or polyethylene and silicon and coated on one surface with aluminium pigment. A flexible head support is stitched to the sheet near a slit 1 which provides shouldercovering portions. The sheet may be used to form a wind-break or a ridge tent, tent pegs being inserted through apertures 7 and a ridge pole through the central part of the straps 5.
Patent GB-1305970-A (GB)
IPC: C09B1/54
Filed: 1970-11-12
Abstract: 1305970 Anthraquinone dyestuffs BAYER AG 12 Nov 1970 [12 Nov 1969] 53903/70 Heading C4P [Also in Division D1] Dyes having the general formula wherein A is alkylene optionally substituted by one or more oxygen atoms, B is an unsubstituted alkyl radical and X is a hetero atom, e.g. Q or S are specified and are used to dye synthetic and semi-synthetic fibre materials.
Patent GB-1212678-A (GB)
Title: Improvements in and relating to oil burners
Inventor: HODDINOTT PETER FROST
IPC: F23K5/04
Filed: 1966-12-02
Abstract: 1,212,678. Oil burner fuel supply systems. DAVEY, PAXMAN & CO. Ltd. 21 Nov., 1967 [2 Dec., 1966], No. 54007/66. Heading F4T. The fuel oil supply system for a burner 13 of the spill-jet type comprises a pump 1 supplying oil to the burner and a spill line 17 having in it non-return valves 19 which open at a pressure greater than is required to keep them open so as to ensure a pressure in the spill line at start-up higher than when the burner is operating normally, this giving an increased fuel/air ratio. Between the pump and the burner there are a thermostat 5, non-return valve 6, heater 7, thermometer 9, pressure gauge 10 and pressure control valve 11. A surplus fuel line 14 extends between valve 11 and the suction side of the pump. In the spill line 17 there is a pressure gauge 20 and a spill valve 18.
Patent GB-1249989-A (GB)
Title: Improvements in or relating to rotary magazines for holding photographic slides
Inventor: JONES ROBERT MERVYN
IPC: G03B23/06
Filed: 1967-12-06
Abstract: 1,249,989. Rotatable slide magazine. GNOME PHOTOGRAPHIC PRODUCTS Ltd. Feb.27, 1969 [Dec.6, 1967], No.55395/67. Heading G2A. A rotatable slide magazine 10 has a plurality of radially extending partition walls 9 forming slots and flexible slide holding means at the rear of the slots. The outer end of the slots is formed by outer wall 12 and the inner end is partly formed by rigid annular ring 17 and partly (as shown) by resilient fingers 21, projecting from an annular flange 19, which are engaged by slide 22 when inserted thus holding the slide in the slot. Preferably the walls 9 are provided with tapered ribs 23 to assist in locating the slide in the slot. Alternatively the flexible holding means may be a continuous elastic ring (30) Fig. 3 (not shown) around the free end of wall 17, or a corrugated thin metal ring. The following abridgments are included in this series since the Specifications were, through an error, not allotted to this Group. References to them will be found in the indexes to this volume.
Patent GB-1417119-A (GB)
Title: Process for treating bones
IPC: A61K31/20
Filed: 1972-11-30
Abstract: 1417119 Treating bone fractures G H THIELE 30 Nov 1972 55444/72 Heading ASB Bone fractures may be healed by local injection of a liquid of pH 8-11 comprising (a) a salt or ester of formic acid, an alkane carboxylic acid, an unsaturated fatty acid, a hydroxy-substituted fatty acid, a hydrogenated fatty acid or a polymerised fatty acid and (b) a liquid carrier. Salts specified include sodium morrhuate, ethylammonium oleate, sodium psyllicate and sodium ricinoleate. The carrier is usually water and may also contain ethanol, benzyl alcohol and sodium hydroxide. Where necessary, the bones are aligned before treatment and several doses of the composition may be administered over a period. The treatment is applied to the coffin 'bone of a horse.
Patent GB-1451488-A (GB)
Title: Powder coating composition
IPC: C09D175/00
Filed: 1973-11-30
Abstract: 1451488 Powder coating composition NIPPON PAINT CO Ltd 30 Nov 1973 [30 Nov 1972] 55656/73 Headings C3R C3P and C3B A powder coating composition comprises at least one solid resin and at least one polyisocyanate having an average of at least two isocyanate groups in each molecule. The solid resin is preferably one containing active hydrogen atoms which react with isocyanate groups and is, in particular an acrylic resin containing hydroxyl groups, a polyester or an acrylicmodified polyester resin. Other suitable resins are epoxy resins, polyethers and amino resins. The polyisocyanate is preferably solid at room temperature and may be one which contains biuret or allophanate groups or one prepared by reacting a di- or tri-isocyanate with a chain extender. The composition may be uniformly blended, e.g. by dry blending, semi-dry blending or melt-blending, followed by pulverization to form a powdery paint. Substrates may be coated with the paints by techniques such as electrostatic coating or fluidized bed coating, followed by heating to temperatures of from 140‹ to 240‹ C. Pigments and other conventional additives may be incorporated in the compositions.
Patent GB-1373946-A (GB)
Title: Optically transparent acoustic wave transducer
IPC: B06B1/06
Filed: 1971-12-02
Abstract: 1373946 Modulating light HEWLETTPACKARD CO 2 Dec 1971 [28 Dec 1970] 56037/71 Heading H4F An acoustic transducer, suitable for use in a tunable optical filter of the type wherein a light beam is plane polarized 17 and transmitted collinearly with the acoustic (shear) wave through an optically anisotropic medium 11 so that a narrow band of wavelengths is cumulatively diffracted into the orthogonal polarization and selectively blocked or transmitted by analyser 21, comprises a transparent crystal 14 with parallel input and output optical faces, and electrodes disposed so that an electric field at the desired acoustic frequency may be applied to the crystal in a direction parallel to the plane of the optical faces. The electrodes may be a single pair 22, 23 disposed on either optical face, or a pair on each face connected in parallel, Fig. 4 (not shown). Alternatively the electrodes may be interdigitated, Fig. 3 (not shown). Electrodes may be formed on the input surface of medium 11 rather than the output face of crystal 14. As described the crystal 14 is a rotated Y cut of lithium niobate, the surface normal being rotated 58À6 degrees from the positive Y axis towards the negative Z axis, or of lithium tantalate. Medium 11 is birefringent and of CaMoO 4 , quartz or PbMoO 4 .
Patent GB-1214610-A (GB)
Title: Transmission mechanism
IPC: F16H45/00
Filed: 1969-11-17
Abstract: 1,214,610. Clutch combinations. BORGWARNER CORP. 17 Nov., 1969 [26 Feb., 1969], No. 56212/69. Heading F2C. A multi-plate friction clutch 17 connecting the impeller 61 of a torque converter 16 to the normal driving housing 14 is engaged by a piston 96 acting through a plunger 104 and moved axially by apply pressure fluid 113, the movement being smoothed by pressure fluid on the other side of the piston escaping from the cylinder 51 through a restricted outlet 106, 107. The smoothing fluid enters the cylinder 51 around the plunger 104 from the housing 14, the plunger having a predetermined clearance into the housing. A spring 92 releases the clutch on removing the apply pressure. The housing also carries a gear-wheel 52 driving a pump 33 through a gear-wheel 54, and a power take-off 34 through a gear-wheel 56. The torque converter working fluid in the housing also cools the clutch discs 87, 89.