baber/WOPTO huggingface dataset:
Patent GB-1488820-A (GB)
Title: Lactam-lactone-formaldehyde block copolymers
IPC: C08G2/38
Filed: 1974-12-24
Abstract: 1488820 Lactam/lactone/formaldehyde block copolymers SOC ITALIANA RESINE SIR SpA 24 Dec 1974 [28 Dec 1973] 55774/74 Headings C3R and C3P Block copolymers have the structure wherein: A is a polylactone block of recurring units -CO-(CH 2 ) n -O- where n is 2 to 13 and the polymethylene chain may be substituted by alkyl, aryl, alkaryl or cycloalkyl; B is a polylactam block of recurring units and each D is a polyoxymethylene block of recurring units -CH 2 O- constituting 5 to 99À9% of the block copolymer. A process for preparing polymers of such structure comprises (a) copolymerizing appropriate lactam(s) and lactone(s) in the presence of an anionic catalyst to form a block copolymer with catalytically active nuclei at the end of the chains, (b) purifying the copolymer by removing unreacted monomers, homopolymers and free catalytic residues without destroying the catalytically active nuclei, and (c) reacting the purified polymer with an appropriate amount of formaldehyde in the absence of a chain transfer agent in a liquid medium. Polymers obtained by the process of Specification 1,488,171 (which relates to polymerizing formaldehyde in the presence of a chain transfer agent and 0À001 to 5 wt. per cent of the lactone-lactam block copolymers) are disclaimed.
Patent GB-1312097-A (GB)
Title: Coating composition and process
IPC: B05D7/14
Filed: 1970-11-25
Abstract: 1312097 Coated metal surface CELANESE COATINGS CO 25 Nov 1970 [28 Nov 1968 (2)] 56013/70 Heading B2E [Also in Division C3] An adherent coating of an organic polymer is formed on a metal surface by contacting with the metal surface a liquid composition comprising an oxidising mineral acid system which generates ions of the metal when in contact with the metal surface and an emulsion of a film-forming polymer, which emulsion is stabilised by an anionic or nonionic surfactant, stable to the mineral acid system and coagulated by the metal ions. The polymer may be a homopolymer of a C 1-18  alcohol ester of acrylic or methacrylic acid or a copolymer of these esters with acrylic or methacrylic acid, acrylonitrile, methacrylonitrile, methylol acrylamide or methacrylamide, isobornyl acrylate, styrene or vinyl toluene. The mineral acid system may comprise nitric acid where the metal surface is iron, zinc or tin, or a mixture of fluoboric acid, hydrofluoric acid, chromic acid and potassium ferricyanide. The surfactant may be an alkali metal, amine or ammonium salt of a sulphonic, phosphoric or carboxylic acid having sites of polymerisable unsaturation, optionally together with other anionic or nonionic surfactants. The coating may be pigmented, e.g. with barytes, red iron oxide, titanium dioxide, magnesium silicate, calcium silicate and carbon black. The coating can be cured by baking.
Patent GB-1185500-A (GB)
Title: Snap-Action Electric Switch.
IPC: H01H13/28
Filed: 1967-12-12
Abstract: 1,185,500. Retractive switches. CHERRY ELECTRICAL PRODUCTS CORP. 12 Dec., 1967 [12 Jan., 1967], No. 56317/67. Heading H1N. A snap-action switch comprises a switch plate 26 pivoted on posts (22), 23 (see Fig. 4) on a terminal 19, an actuating lever 34 pivoted at one end in a V-groove 36 in the switch housing 10 and with its other end extending between posts (22), 23 for engagement by an actuating button 47, and a tension spring 45 connected between blade 26 and lever 34 and extending between arms (24, 25, Fig. 4) of blade 26 and between the posts. On depression of button 47 lever 34 pivots about 36 and moves spring 45 through the centre line of blade 26 so the latter snaps from contact 32 to contact 33. Lever 34 has a laterally offset portion 38 (Fig. 4) providing clearance for the blade 26. The terminals 19, 14, 15 are mounted in slots in housing 10 and held by a cover (11, Fig. 2).
Patent GB-1372855-A (GB)
Title: Regeneration of alkaline earth loaded cationic exchange resins
IPC: B01J49/00
Filed: 1971-12-06
Abstract: 1372855 Regenerating ion-exchange resins AEROJET-GENERAL CORP 6 Dec 1971 [4 Dec 1970] 56442/71 Heading B1J A method for the regeneration of an acidic ion exchange resin of pK value from 3.0 to 7.0 and loaded with calcium or magnesium ions comprises contacting said resin with a cycloaliphatic #-diketone in a water or organic solvent solution to remove said ions from said resin. The ketone may be 1,3-cyclohexanedione, 1,3-cyclopentanedione, or methyl or ethyl-substituted cycloaliphatic #-diketones. The solvent may be water, methanol, ethanol, propanol, a polyol or a polyether.
Patent GB-1277020-A (GB)
Title: Internal combustion engine installations
Inventor: PARKER KENNETH GEORGE
IPC: F02D1/00
Filed: 1968-12-03
Abstract: 1277020 Engine stop gear C A V Ltd 14 Nov 1969 [3 Dec 1968] 57320/68 Heading F1K In an I. C. engine installation in which the engine 10 receives combustion air from a turbinedriven compressor 11 and fuel from a fuel supply device, e.g. a carburetter or an injection pump 12 as shown, a normally-closed valve 15 is opened automatically when the discharge pressure of the compressor exceeds a predetermined value, e.g. due to excessive engine speed, so that air from the compressor is delivered to the fuel supply device to purge fuel from the inlet region thereof and thereby shut-off the fuel supply to the engine. The purged fuel is forced through a relief valve 17 back into fuel tank 18. The injection pump 12 receives fuel from the tank 18 via a lift pump 13, e, g. of the diaphragm type, and a filter 14. Preferably the valve 16 is designed to remain open so that the fault must be investigated before restarting the engine.
Patent GB-1072572-A (GB)
Title: Improvements in or relating to the treatment of metals
Inventor: GIBSON THOMAS
IPC: C23C8/60
Filed: 1962-11-15
Abstract: 1,072,572. Bobbins and packages. METALGAS CO. Ltd. Nov. 15, 1963 [Nov. 15, 1962], No. 57440/66. Divided out of 1,072,571. Heading B8M.  In the treatment (see Divisions C6-C7) of, e.g. a flexible steel strip, the strip is wound into a coil, the space between the coils packed with a powdered material, and the whole heated. A steel strip is wound together with one or more cords 10 whioh act as spacers, on a bobbin 3 having removable end plates 6 clamped to the core of the bobbin by a nut 8 on a threaded spindle 9.
Patent GB-1218228-A (GB)
Title: Improvements in and relating to ball valves
Inventor: PRONOST JEAN
IPC: F16K15/04
Filed: 1968-12-05
Abstract: 1,218,228. Valves. COMMISSARIAT A L'ENERGIE ATOMIQUE. 5 Dec., 1968 [14 Dec., 1967], No. 57754/68. Heading F2V. A non-return valve comprises a casing 6 having a seat holder 18 in a bore 14, with a seat 24 made from metal, e.g. gold, and a ball 30 made from a material harder than the seat, e.g. stainless steel, the seat having ribs 28 to guide the ball which is loaded on to the seat by a spring 44, and a ring 20 having a spring abutment 46 secured thereto by vanes 48, located in the bore 14 to retain the seat in position, held by plug 36 welded to the casing at 38, and clamped by a plate 40 and screws 42. In Fig. 2, not shown, the spring abutment is formed in a plug (36<SP>1</SP>) disposed on an axis with the seat, located obliquely to the line of flow through the valve.
Patent GB-1416749-A (GB)
Title: Xanthene and thioxanthene derivatives
IPC: C07D311/82
Filed: 1973-12-17
Abstract: 1416749 Xanthene and thioxanthene derivatives RICHARDSON-MERRELL Inc 17 Dec 1973 [21 Dec 1972] 58258/73 Heading C2C Novel compounds of Formula I where Y is oxygen or sulphur; A is a straight or branched alkylene chain having from 1 to 4 carbon atoms; R and R 1  are each hydrogen, lower alkyl having from 1 to 6 carbon atoms, cycloalkyl having from 3 to 6 carbon atoms, alkenyl having from 3 to 6 carbon atoms in which the unsaturation is in a position other than in the 1-position of the alkenyl group, and when R and R 1  are taken together with the nitrogen atom to which they are attached represent the pyrrolidinyl, morpholino or piperidino radical; and the pharmaceutically acceptable acid addition salts thereof are prepared by dehydration of the intermediates of Formula III whose preparation is described in Specification 1,416,750. Antiviral compositions in conventional forms for oral, topical or parenteral administration comprise an above novel compound and a carrier or diluent.
Patent GB-1329379-A (GB)
Title: Programming apparatus for controlling a cycle of operations  automatically
IPC: G05G21/00
Filed: 1971-12-22
Abstract: 1329379 Programming apparatus for valves and switches MECMAN AB 22 Dec 1971 [23 Dec 1970] 59534/71 Heading F2V A programming apparatus for controlling a bank of reversing valves 16, Fig. 1, or a plurality of electric switches, comprises a magazine 5 with a number of spools 10<SP>1</SP> disposed in a vertical channel 9, a number of resilient operating members 27 extending into the channel, each spool having a profiled surface adapted to engage and operate a certain combination of operating members when that spool is in an operative position, and a fluid piston/cylinder arrangement 30, 31 for moving the row of spools 10<SP>1</SP> stepwise along the channel 9 so as to substitute the next spool for the spool disposed in the operative position. The piston/cylinder arrangement is controlled by a manually or mechanically operated valve. The spools comprise a number of interchangeable washer and spacer rings threaded on a spindle. Each spool is held in the operative position by spring- loaded balls 22, Fig. 4. The valves are arranged in two off-set groups 17a-17c and 17d-17f.
Patent GB-1385350-A (GB)
Title: X-ray tube target and x-ray tubes utilising such a target
IPC: H01J35/10
Filed: 1972-12-28
Abstract: 1385350 X-ray tubes THOMSON-CSF 28 Dec 1972 [31 Dec 1971] 59927/72 Heading H1D A rotating target for X-ray tubes includes a graphite carrier 1 and emissive layer 3 of high At. No. (e.g. W), separated by sub-layers 20 and 21 consisting respectively of Ir, Os or Ru and Hf, Ta or Zr. The preferred combination is Ir-Ta-W. Ir may be deposited by cathode sputtering, Ta and W by chemical reactions in the vapour phase, and details of the processes and also layer thicknesses are given. Initially in operation, C diffuses across the Ir and reacts with Ta to form tantalum carbide which inhibits C diffusion and subsequent tungsten carbide formation. Adhesion of the tantalum carbide is assured by the plasticity of the Ir layer which takes up the difference of expansion coefficients.
Patent GB-1338239-A (GB)
Title: Flame-retardant yarns
IPC: D01F8/14
Filed: 1972-02-01
Abstract: 1338239 Fire-proofed conjugate filaments IMPERIAL CHEMICAL INDUSTRIES Ltd 1 Feb 1972 [21 Dec 1970 (3)] 60442/70 60443/70 and 60444/70 Heading B5B The core component of a conjugate sheath/ core filament contains a flame-retardant halogen compound, which, when heated to 200‹ C. or above in the presence of the fibre-forming polymer causes it to discolour or otherwise cause difficulties. As this material is in the core these difficulties are avoided but the fire-retarding is still present. The filaments may be produced by conventional melt-extrusion techniques and are usually stretched at elevated temperatures after solidifying. The preferred polymeric materials are polyamides, such as polymers of nylon 6 and nylon 6À6 and nylon 6À6 homopolymer, polyesters, such as polyethylene terephthalate and polybutylene terephthalate, polycarbonate, and polyolefines such as ethylene/vinyl acetate copolymer and poly-(4-methylpentene-1). Either sheath or core polymers, or both, may contain a metal oxide such as antimony oxide or titanium dioxide delustrant. The fire-retardant compounds disclosed in the examples are 2,7-dibromo-9,9-bis-(#-carboxyethyl) - fluorene, 2,4,6,2<SP>1</SP>,4<SP>1</SP>,6<SP>1 </SP>- hexabromodiphenyl, decabromodiphenyl, tetrabromo - bis - phenol A diacetate and pentabromotoluene.
Patent GB-1262478-A (GB)
Title: Thyristor circuits
Inventor: THOMPSON MICHAEL AINLEY
IPC: H02P7/29
Filed: 1968-12-23
Abstract: 1,262,478. Thyristor commutating circuits. JOSEPH LUCAS (INDUSTRIES) Ltd. 25 June, 1969 [23 Dec., 1968], No. 60989/68. Heading H3T. [Also in Division H2] In operation of a commutating circuit for a thyristor 15 controlling the current through an inductive load 14, for example the traction motor of a road vehicle, an auxiliary thyristor 18 is fired to charge a capacitor 19 to the supply voltage through an inductor 17 which is prevented from storing energy and hence producing an excessive voltage across capacitor 19 by the provision of a diode 23; the voltage across the capacitor is then reversed through a ringing circuit 19, 21, 22 so that when thyristor 15 is fired, it may be quenched by firing thyristor 18 again to apply the reverse voltage to thyristor 15. The inductor 17 protects thyristor 18.
Patent GB-1262570-A (GB)
Title: Improvements in or relating to the coating of surfaces
IPC: C23C4/067
Filed: 1969-12-29
Abstract: 1,262,570. Rotary-piston engines. SOC. ANON. AUTOMOBILES CITROEN. Dec.29, 1969 [Dec.31, 1968], No. 63111/69. Heading F1F. [Also in Division C7 An A1 alloy stator for a rotary piston engine coated with nickel alumindes and oxides and carbon steel as described in Specification 1, 260, 437 is provided with a further coating of chemically or electrolytrically deposited Ni or Co, which may contain wear resistant particles.
Patent GB-696277-A (GB)
Abstract: 696,277. Measuring bridges; A.C. vector voltage measuring; phase angle measuring. LANDIS & GYR A.KT.-GES. April 29, 1952 [May 2, 1951], No. 10781/52. Class 37. In an A.C. energized impedance bridge, the unbalance voltage is indicated by an iron-cored electrodynamic measuring instrument whose moving coil is connected across the unbalance diagonal, and whose field coil is energized. in parallel with one element of a series circuit across the supply, comprising non-inductive resistance and capacitance so proportioned that the instrument indicates one only of the two vector components of the unbalance voltage depending on the element across which the field coil is energized. Fig. 1 shows an impedance bridge energized from A.C. source u comprising non-inductive ratio arms R<SP>3</SP>, R<SP>4</SP>, an unknown impedance X and a standard impedance N in series with an adjustable non-inductive resistance r. The unbalance voltage u across diagonal 1, 2 energizes the parallelled moving coils D<SP>1</SP>, D2 of two electrodynamic detectors whose field coils F<SP>1</SP>, F<SP>2</SP> are energized in parallel respectively with the resistance R and with the capacitance C of two identical resistancecapacitance series circuits across the supply to the bridge, whose constants are chosen according to given formulµ so that the magnetizing currents of the field coils are respectively in phase and in quadrature with the supply voltage, so that the corresponding instruments indicate the real and imaginary components of the unbalance voltage, which are both reduced to zero when the bridge is correctly balanced by adjustment of R<SP>3</SP>, R<SP>4</SP> and r. In a modification, Fig. 3 (not shown), a single instrument is used whose moving coil is connected across the unbalance diagonal and whose field coil is alternatively switchable across the resistance and capacitance elements of a single resistance-capacitance series circuit connected to the bridge supply voltage.
Patent GB-743134-A (GB)
Abstract: 743,134. Curtain rail supports. HARRISON (BIRMINGHAM), Ltd. March 15, 1954 [March 14, 1953], No. 7107/53. Class 52(5). A supporting bracket for a flanged curtain rail comprises an attachment portion of square section with apertures for face or top fixing, the sides engaged by the head of the fixing screw having projecting arms embracing the top portion of the rail and having co-operating faces which engage one another when the fixing screw is tightened and move the arms relatively to grip the rail. As shown, the bracket is bent up from a blank of strip metal and has fixing apertures 16, 17, the fold 18 of the upper rail-engaging arm 13 abutting the downwardly sloping part 23 of the lower rail-engaging arm 14. Tightening of a face or top fixing screw draws the arm 13 inwardly, or the arm 14 upwardly, respectively, with consequential displacement of the other arm to clamp the flange 28 of the rail 21 between one end of T-shaped slots in the arm 13 and the tongues 25 or nose 26 in the arm 14. In a modification the arm 14 has a single tongue 25.
Patent GB-2006528-A (GB)
Title: Combined pushbutton and lever switch
IPC: B60Q1/14
Filed: 1978-08-30
Abstract: A combined pushbutton and lever switch for incorporation in the steering wheel of an automotive vehicle has an actuating lever 5 pivotally mounted in a contact carrier 2, secured to the boss 1, of the steering wheel and engaging a contact spring 6 centrally secured to the contact carrier 2, and acting to retain the lever 5 in equilibrium. The switch is actuated by a push or pull of the lever 5 at one end or by a central pushbutton 17 mounted in the boss cushion 4 of the steering wheel and engaging the lever at its opposite end. <IMAGE>
Patent GB-2005875-A (GB)
Title: Improvements in or relating to electronic chronographs
IPC: G04F10/00
Filed: 1978-10-02
Abstract: A stop watch (Figure 1) comprises a source (22) Figure 3 of first and second clock pulses, a switch operated circuit (23) for producing instruction signals for starting, stopping and re-setting a time measurement operation; a first drive controlling circuit (29) for producing from the first clock pulses first drive pulses which are started and stopped by the instruction signals; a second drive controlling circuit (31) for producing from the second clock pulses second drive pulses which are started and stopped by the instruction signals; and a respective stepping motor in each of display mechanisms (13) and (16) of which one motor is driven by the first drive pulses to drive via a gear train a hand 8 to indicate on a first time unit scale (5) e.g. marked in seconds, and the other is driven by the second drive pulses to drive another hand (10) via a gear train to indicate on a time scale (6) marked in units which are sub-multiples of those in the first scale, eg in 1/100 -seconds. The first motor also drives a minutes hand 9 via gears. <IMAGE>
Patent GB-2031765-A (GB)
Title: Piston ring honing
IPC: B24B19/11
Filed: 1978-10-18
Abstract: A piston ring honing machine and method are disclosed wherein the outer cylindrical face of a stack of piston rings 51 is face finished simultaneously by compressing the rings radially inwardly and into a generally circular configuration and retaining the outside diameter of that circular configuration by confining the compressed rings within a plurality of cylindrical drive rollers 15 disposed about the rings. Honing tools 25 are placed against the ring faces and the rings driven to rotate about the circle center by rotation of the cylindrical rollers. The stack of rings therefore moves relative to the honing tools to finish the ring outer face. The tools 25 are reciprocated independently in the direction of the cylindrical roller axes to more uniformly finish the ring faces. <IMAGE>
Patent GB-2034487-A (GB)
Title: Alternating current measuring devices
IPC: H01F38/28
Filed: 1978-11-14
Abstract: A toroidal winding 11 with uniformly spaced turns 12 is wound on a rigid non-magnetic former 10, the output voltage being applied to a resistive input 14 of an operational amplifier 15 having a capacitive feedback 16 to form an integrator. High accuracy is obtained. By making the ratio of the coil resistance to the sum of the coil resistance and integrating resistance equal to the ratio of the linear coefficient of expansion of the former to the temperature coefficient of resistance of the winding, temperature compensation is achieved over the range for which these coefficients are linear. <IMAGE>
Patent GB-2034085-A (GB)
Title: Measuring instrument
IPC: G01C22/00
Filed: 1978-11-17
Abstract: A measuring instrument suitable for measuring the distance travelled or area covered by agricultural vehicles utilises a pocket calculator of the kind having an automatic constant facility on the plus function. A magnetic switch 12 operated by wheel rotation is connected through pulse lengthening means to the plus function so that by keying in the wheel circumference or unit area covered the calculator accumulates a read out of distance or total area covered. <IMAGE>
Patent GB-2009123-A (GB)
Title: Leaching Manganese Ore
IPC: C22B3/00
Filed: 1978-11-20
Abstract: In a process of leaching manganiferous ocean nodule ores with HCl by controlling the chlorine pressure and the pH of the leaching reaction in order to first leach out the metals other than manganese, as their chlorides, can be recovered in the form of its silicate, aluminate, oxide, or other insoluble forms.
Patent GB-2011311-A (GB)
Title: Moulds Having Linings of Low Thermal Conductivity
IPC: H02G1/14
Filed: 1978-12-11
Abstract: In a two-part mould 1 for use in jointing by the injection moulding technique, e.g. for jointing cables or cables and end caps (Fig. 4 not shown) with thermoplastics sheaths, the mould components 1 are made of a rigid material, e.g. aluminium, and the surface of the mould cavity has a layer 5 of heat-resistant material, e.g. an acrylic resin or ceramic material, of low thermal conductivity. The layer 5 reduces risk of premature solidification of molten thermoplastics material injected into the mould cavity. The layer 5 may be a coating or a lining consisting of preformed extrudate which can readily be replaced. The layer 5 may, in at least the region of the admission port, be provided itself with a stainless steel sleeve 9. <IMAGE>
Patent GB-2015441-A (GB)
Title: Aircraft Runway
IPC: B64F1/36
Filed: 1979-02-16
Abstract: The invention concerns a portable "Ski-Jump" runway for use by Hawker Siddeley Harrier type V/STOL aircraft and other conventional tricycle undercarriage aircraft having suitable performance characteristics. The runway for use by Harrier comprises a main central ramp (10) constructed on or as the chassis of a lorry or trailer (18) along which in use the main undercarriage wheels of the aircraft travel and secondary ramp sections (11) of substantially lighter structural construction collapsibly mounted on support frames (13) cantilevered from the main ramp section (10) along which in use the secondary undercarriage wheels of the aircraft travel. The main ramp section (10) is conveniently divided into at least two, preferably three, lengths (15, 16 and 17) the foremost length (15) being part of the lorry or trailer (18) and with the rearward length or lengths (16) and (17) capable of being stored on top of the foremost length (15) for transportation purposes. <IMAGE>
Patent GB-2016420-A (GB)
Title: Collapsible container
IPC: B65D6/22
Filed: 1979-03-07
Abstract: A container has four hingedly connected walls (10-13), permitting collapsing of the container to bring adjacent walls (10-13) into contact or near contact with each other, a base (18) and a top (15) attachable to the walls when erected, means (16,19) for securing the top (15) and base (18) to the erected walls (10-13) and means (17,20) on the top (15) and the base (18) to maintain the walls erect when the top and the base are secured thereto. The top and base may be hinged to respective opposed walls. <IMAGE>
Patent GB-2018145-A (GB)
Title: A Building Block Set
IPC: F16B5/06
Filed: 1979-04-05
Abstract: A building block set for infants having components of box form with identical or differing geometrical shapes such as square, rectangular or triangular, and being open on at least one side. Connecting elements are provided having slitted cylindrical portions. The slits are of such a width that the elements can be mounted over abutting sides of the building components by a push-fit action with the abutting sides being received in the slits. The structures so constructed can be used for other purposes such as receptacles for decorations to be hung on a room wall. <IMAGE>