baber/WOPTO huggingface dataset:
Patent GB-368751-A (GB)
Title: Improvements in or relating to devices for use in the reproduction of sound
IPC: H04R21/04
Filed: 1930-12-03
Abstract: 368,751. Microphones ; gramophone pick-ups. BROWN, S. G., Western Avenue, North Acton, London. Dec. 3, 1930, No. 36480. [Class 40 (iv).] A differential microphone, more particularly for use in a gramophone pick-up, has the fixed plates constructed entirely of metal whilst the vibrating plate arranged therebetween is built up of a main metal disc and one or more superposed metal discs, the edges of any or all of the discs being preferably turned up for stiffening purposes. Fig. 2 shows a construction of pick-up comprising gold-plated brass fixed electrodes 1, 2 spaced apart by a ring 11 having an aperture 12 for the introduction of the granules. The ring is also provided with an insulating lining 15 and is separated from the plates 1, 2 by insulating annular discs 16. The whole is secured together by screws 17 provided with suitable insulating bushes and washers 18. The vibrating plate 3 comprises, as shown in Fig. 3, a phosphor bronze disc 3, 0.02-0.01 inches thick, having its edge turned up for stiffening purposes and strengthened by discs 33, 35 either or both of which may be turned up at the edge. The discs may be corrugated or conical instead of flat and the inner surfaces of the plates 1, 2 may be correspondingly shaped. The plate 3 is carried by a stem 19 which passes through an aperture 20 in the plate 1 and is connected to the upper end of the stylus bar 21 pivoted on knife-edges 25. The whole is supported on an insulating base 28 provided with detachable covers 30, 31 the latter of which is preferably formed with ventilating apertures 32.
Patent GB-362162-A (GB)
Title: Improvements in the production of potassium nitrate
IPC: C01D9/06
Filed: 1930-12-05
Abstract: Solid potassium nitrate is obtained directly from solid potassium chloride by treatment thereof with vaporized nitric acid or nitrous gases at a temperature above the dew point of the vapours.  The escaping gases are freed in the known manner from chlorine and returned to the process.  They may for instance be passed over heated calcium nitrate with formation of calcium chloride and production of nitrogen oxides for use in the process. In carrying out the process the necessary temperature may be realized by heating the reaction chamber or by superheating the reaction gases.  The hot gases obtained by the oxidation of ammonia may however be used directly. Reaction may be effected continuously in shaft or rotary furnaces; whilst when the gases for decomposing the potassium chloride are obtained by passing the exit gases over calcium nitrate several charges both of potassium chloride and calcium nitrate may be arranged in series, so that complete conversion in the one case and complete separation of chlorine from the gases in the other may be ensured.
Patent GB-1317755-A (GB)
Title: Container for blood
IPC: A61M5/14
Filed: 1970-07-30
Abstract: 1317755 Blood transfusion AGA AB 30 July 1970 [11 Aug 1969] 36837/70 Heading A5R [Also in Division B8] A flexible, frusto-conical or toroidal container for use in the centrifuging, freezing and transfusion of blood comprises side walls 1, 2 welded together at their radially inner edges by a wall 5 having at least one tube 4 connected thereto. The walls 1, 2, 5 may comprise an inner layer of P.T.F.E. and an outer layer of nylon. The container may be placed in an outer rigid toroidal casing (8', 8", Fig. 2) for freezing the blood and in a bucket (10, Fig. 3) for transfusion of the blood.
Patent GB-1268202-A (GB)
Title: Composite blade for an elastic fluid flow machine
Inventor: MORLEY JOHN GODFREY
IPC: F01D5/28
Filed: 1968-08-01
Abstract: 1,268,202. Turbomachine blades. ROLLSROYCE Ltd. July 24, 1969 [Aug. 1, 1968], No. 36874/68. Heading F1T. A gas turbine or compressor blade 20 is constructed from carbon fibre reinforced layers 22, Fig. 2, bonded together, the planes of the layers being at an acute angle 6 to the chord 24. The fibres (26), Fig. 3 (not shown), in each layer 22 extend generally along the length of the blade from root to tip, the fibres in adjacent layers being inclined to each other by about 10 degrees in the mid-chord regions. The angle of inclination increases towards the leading edge until some of the fibres are substantially normal to each other, Fig. 4 (not shown). In a modification, Fig. 5, the central portion 30 of a blade is constructed of fibres in the same way as blade 20 but an arch shaped hard impact resistant metal reinforcement member 32 is keyed or chemically bonded to the portion 30 to form leading and trailing edges 36, 38. The portion 30 and reinforcement 32 have matching roots 34, 40.
Patent GB-894484-A (GB)
Title: A container
IPC: B65D3/14
Filed: 1960-10-27
Abstract: 894,484. Portable containers. CONTAINER CORPORATION OF AMERICA. Oct. 27, 1960 [Nov. 9, 1959], No. 36886/60. Class 66. A spirally wound container is formed by winding on to a mandrel 22 inner and outer wall plies 19, 20 which overlap and are adhesively bonded together except where a tear tape 21 prevents their adhesion, the tape 21 being wound simultaneously with the plies 19, 20 and overlying a butt joint between adjacent edges of the ply 19, and the ply 20 being cut at 23 to render a pull tab 16, attached to the tape 21, accessible from the exterior. A patch 24 is bonded between the plies 19, 20 in order to strengthen the area under the pull tab. A liner 18 of metallic foil is bonded to the inner side of the ply 19; and a label ply 13 which is also cut to form the tab 16, is bonded to the exterior of the ply 20. The ply 19 may be of chipboard and the ply 20 of Kraft paper. When the container body is formed, a metal base 11 is crimped on after which the container is filled, e.g. with baking dough, and a cap 12 crimped on the other end. A coloured spot 15 marks the position of the pulling tab; and, when the tear tape is pulled off, the inner ply 19 and liner 18 may be broken by twisting the end closures 11, 12 in opposite directions.
Patent GB-1139934-A (GB)
Title: Cinnamylpiperazine preparations
Inventor: HUGUET GERARD
IPC: C07D295/03
Filed: 1966-08-18
Abstract: 1,139,934. Cinnamylpiperazines. DELALANDE S.A. 10 Aug., 1967 [18 Aug., 1966], No. 36963/66. Heading C2C. Novel compounds (and salts thereof) of the general formula wherein R 1 , R 2  and R 3 , which may be the same or different, each represent a hydrogen or halogen atom, a C 1-4  alkyl group, a hydroxyl or alkoxy group, or an amino or nitro group, R represents an alkyl chain comprising 1 to 6 carbon atoms carrying functional groups and is represented by: -(CH 2 ) n .OH, -(CH 2 ) n . CH(OH) . CH 3 , -(CH 2 ) n  . C(R<SP>1</SP>)(R<SP>11</SP>)OH, -(CH 2 ) n  . COOR<SP>1</SP>, -(CH 2 ) n  . COR<SP>1</SP>, -(CH 2 ) n . CH(OH).CH 2 OH, -(CH 2 ) n  . CH(OR)CR 2 OR<SP>1</SP>, -(CR 2 ) n  .CN, -(CH 2 ) n .CONR<SP>1</SP>R<SP>11</SP>, -CH 2 . CO.NH.NH 2  or -COOR<SP>1</SP>, wherein n is an integer of from 1 to 4 and R<SP>1</SP> and R<SP>11</SP> each represent a hydrogen atom, a C 1-4  aliphatic radical or an aromatic radical, e.g. phenyl or benzyl and when R is -(CH 2 ) n .CONR<SP>1</SP>R<SP>11</SP>, R<SP>1</SP> and R<SP>11</SP> may together with the N-atom constitute a heterocyclic radical, are prepared: (a) by reacting the appropriate cinnamyl halide with a piperazine monosubstituted by the radical R, (b) by the interaction of a substituted or unsubstituted cinnamyl chloride and excess piperazine followed by reaction with a halogenated derivative, R.Halogen, or with an epoxide of the general formula (c) by converting the above novel esters or ketones in which R represents -(CH 2 ) n . COOR<SP>1</SP> or -(CH 2 ) n .CO.R<SP>1</SP> into corresponding derivatives in which R carries a tertiary alcohol group, -(CH 2 ) n .C(R<SP>1</SP>)(R<SP>11</SP>).OH, utilizing an organo-magnesium compound, R<SP>11</SP>Mg.Halogen and (d) by the interaction of a chlorocarbonate Cl.COOR<SP>1</SP> and the appropriate cinnamylpiperazine. Pharmaceutical preparations suitable for improving the blood circulation and the nutrition of the myocardium contain as active ingredient the above novel compounds and administration may be orally, e.g. in the form of a pill, or by injection.
Patent GB-1237875-A (GB)
Title: Improvements in electrochemical machining
Inventor: MAIR JOSEPH
IPC: B23H3/02
Filed: 1967-08-14
Abstract: 1,237,875. Electro-machining. ASSOCIATED ENG. Ltd. Oct. 8, 1968 [Aug. 14, 1967], No.37189/67. Heading C7B. [Also in Division H2] Electro-chemical machining apparatus M, e.g. for deburring metal workpieces or shaping metal workpieces, has a test circuit which is operated prior to starting a machining operation to detect any direct or indirect metallic contact between the tool T and workpice W and to prevent operation if such metallic contact is present. The test circuit comprises a transistor TR1 having its base connected to an intermediate point on a potential divider Dl, R1, R2 connected across the supply lines of a low voltage D. C. supply from a transformer T1 and rectifier X1. Normally the transistor TR1 is in its conducting state so that a relay RL is energized, closing its contacts RL/1 in the power supply circuit to the machining apparatus. The workpiece W and tool T are connected across the diode D1 and resistor R1 so that if before starting a machining operation metallic contact exists between the tool and workpiece, the voltage between the base and emitter of the transistor TR1 is reduced causing the transistor to cut-off and the relay RL to release to prevent operation. If the test is satisfactory the transistor remains conducting and a slow-to-operate relay SC opens its contacts C to interrupt the test circuit to the workpiece. The machining current can then be switched on. An indicator lamp may indicate that a fault exists.
Patent GB-343631-A (GB)
Title: Improvements in or relating to furnaces for central heating boilers
IPC: F24H9/18
Filed: 1929-12-05
Abstract: 343,631. Boiler furnaces. ARNEIL, J. M., 3, Park Terrace, Glasgow. Dec. 5, 1929, Nos. 37269/29 and 26270/30. [Class 51 (i).] Air, supplying.-A portable air supplying structure mounted on the firebars 1 at the back of the grate of a sectional boiler 3 comprises a hollow metal open-bottomed base 4 having fixed in its top wall 9 metal tubes 7 passing through refractoryblocks 5 spaced from the tubes to provide still air spaces 11, air from the ashpit 12 passing through the tubes into the combustion-space. The tubes engage apertures 8 in the plate 9 and pass through apertures 6 in the refractory blocks 5. Bent tubes 71 are fitted into the upper ends of the tubes 7 and project forwardly over the fuel bed, being accommodated in apertures 61 in the uppermost block 5. A perforated rotatable damper plate 13 is arranged beneath the plate 9 to control the amount of air passing upwardly through the tubes. The cover 10 is formed with a recess 14 filled with sand or gravel to prevent fracture of the cover by cool air when the firedoor is opened. An arcuate firebar 16 protects the front of the base 4. Fig. 6 shows a modification in which concentric tubes 72, 73 are surmounted by spaced inclined metal plates 17, 18 defining a passage 19 through which the air passes to the furnace. For use in a Lancashire boiler a row of air supply structures is erected on the firebars along the front of the fire-bridge, each comprising three coaxial tubes rising from a base common to the structures and passing through refractory blocks. The sections of the boiler are shaped as shown in Fig. 3 to form the grate surface.
Patent GB-1249177-A (GB)
Title: Improvements in or relating to valves for pneumatic tyres
IPC: B60C25/18
Filed: 1968-09-20
Abstract: 1,249,177. Valves. SCOVILL MFG. CO. 20 Sept., 1968 [20 Sept., 1967], No. 27354/71. Divided out of 1,249,175. Heading F2V. An inflation valve for a tubeless tyre has a stem provided with an edge to cut or pierce a temporary obstruction means in a valve opening of the wheel rim and is provided with securing means co-operable with complementary means adjacent the opening. The valve is also described in Specification 1,249,175.
Patent GB-1442624-A (GB)
Title: Branch connection on a tube of synthetic material
IPC: F16L41/08
Filed: 1973-08-07
Abstract: 1442624 Pipe couplings NYLOPLAST BV 7 Aug 1973 [11 Aug 1972 3 April 1973] 37442/73 Heading F2G In a branch connection to a main pipe 10 of synthetic material, a connector portion 12 of the branch pipe has abutment portions 17, 18 which are pushed through the main pipe opening 11 and snap back inside the pipe to hold a seal ring 13 between the main pipe wall and a branch pipe flange 20. In one embodiment, as shown, the abutment portions 17, 18 are rendered resilient by incisions 15 in the branch pipe wall. When the connector portion 12 is in the opening 11 a further cylindrical member 22 is screwed into it to prevent inward deflection of the abutment portions resulting in unwanted disconnection of the branch pipe. In another embodiment, the connector portion is held in the main pipe opening by resilient protrusions pressed out of the connector wall (Figs. 1, 2, not shown).
Patent GB-1533420-A (GB)
Title: Melting of aluminium and aluminium alloys
IPC: C22B21/00
Filed: 1977-08-25
Abstract: 1533420 Melting Al in induction loop furnaces ELECTRICITY COUNCIL 25 Aug 1977 [9 Sept 1976] 37451/76 Heading C7D Hydrogen gas is introduced into molten Al (or alloy) in a channel induction furnace before switchoff so that H 2  gas bubbles form in the solidifying melt. This is stated to prevent contraction cracking in the induction loop, whereby electric opencircuits are avoided. H2 gas may be introduced via a porous plug, or the H2 generated in situ from water (from e.g. Na 4 B 2 O 7 . 10H 2 O), steam or a hydrocarbon. N2 or other inert gas may be introduced on remelting to displace the H2.
Patent GB-960749-A (GB)
Title: 4-nitropyridazine compounds
IPC: C07D237/12
Filed: 1962-10-05
Abstract: The invention relates to 3-alkoxy-4-nitro-6-alkylpyridazine-1-oxides (wherein the alkoxy and alkyl groups contain not more than 5 carbon atoms) and the preparation thereof by heating a 3-alkoxy-6-alkylpyridazine-1-oxide with a mixture of nitric acid and sulphuric acid.  3-Alkoxy-6-alkylpyridazine-1-oxides are prepared by oxidation of a 3-alkoxy-6-alkyl-pyridazine with a peroxide or per-acid.
Patent GB-1003146-A (GB)
Title: Ball point writing instrument
IPC: B43K1/08
Filed: 1962-10-08
Abstract: 1,003,146. Reservoir pens. PARKER PEN CO. Oct. 8, 1962 [Oct. 9, 1961], 38032/62. Heading B6P. A ball-point pen comprises a ball 14 housed in a socket member 13, both the ball and socket member being formed of sintered carbide material. The socket member 13 may be moulded from material using 50% tungsten carbide and 50% cobalt binder. The socket member has surfaces 21 separated by grooves 22 which connect an ink feed channel 20 with an annular space 23 formed by moulding. The ball 14 is engaged by a narrow annular surface 26 formed by pressure forming the corner between surfaces 30 and 32. In the pressure forming operation a ball 34 is forced into the socket member 13 with sufficient force to form the surface 26. The balls 14 and 34 may be formed of 10% cobalt binder and 90% tungsten carbide. A lip 28 is formed by swaging with the ball 34 in position, the ball being subsequently removed by a pin inserted through the channel 20. A writing ball 14, of slightly smaller diameter, is then forced into the socket member. The carbide materials may be titanium carbide, tantalum carbide or boron carbide instead of tungsten carbide, while the binder may be iron, chromium, nickel, copper or stainless steel instead of cobalt.
Patent GB-1521579-A (GB)
Title: Process for stretching a thermoplastic material
IPC: D01D5/42
Filed: 1976-09-16
Abstract: 1521579 Stretching film BIAX-FIBERFILM CORP 16 Sept 1976 [17 Sept 1975] 38348/76 Heading B5B A thermoplastic orientable polymer or a blend of a thermoplastic orientable polymer with an incompatible second phase which is an incompatible polymer or inorganic material or polymer matrix having an inorganic filler is longitudinally or biaxially stretched by feeding the film into a nip of interdigitating rollers having grooves parallel to the axis of the rollers; controlling the velocity of introduction of the film into the said nip to maintain a velocity identical to the rotational velocity of the rollers so as, thereby, to stretch longitudinally incremental portions of the film and withdrawing the film from the rollers at a velocity greater than the rotational velocity of the rollers. The longitudinally stretched film may similarly be transversely stretched. The stretched film may cut into strips and subjected to agitation to form fibres or the film may be contacted with a selective solvent to dissolve the incompatible phase or inert filler to give a porous sheet. Preferred thermoplastic materials are polypropylene optionally containing a clay and polyethylene terephthalate mixed with polystyrene which is subsequently removed by boiling toluene.
Patent GB-1511817-A (GB)
Title: X-ray apparatus
IPC: G01N23/04
Filed: 1976-09-17
Abstract: 1511817 Radiography HEIMANN GmbH 17 Sept 1976 [3 Nov 1975] 38529/76 Heading H5R A radiographic apparatus for examining luggage comprises two stationary housing sections 2, 5 containing respectively an X-ray source 3 and a fluorescent screen 6 viewed by a television system 7, 9, and a sliding section 11 which is moved to the closed position during irradiation of an object in space 10, the movement of section 11 being effected by a linear motor 18, 19. Reed switches 22, 23, 24 actuated by a magnet 21 on section 11 control the motor speed.
Patent GB-1369994-A (GB)
Title: Aqueous dispersions
IPC: C09K23/00
Filed: 1971-08-17
Abstract: 1369994 Proofing agent dispersions EI DU PONT DE NEMOURS & CO 17 Aug 1971 [17 Aug 1970] 38627/71 Heading D1P [Also in Divisions Bl Cl and C3] An aqueous dispersion contains at least one water dispersible substance having a water solubility of no more than 20gms/litre at 25C which substance is a halogenated hydrocarbon wax, an inorganic particulate solid or a synthetic polymeric resin which resin is a liquid, has a m.p. below the dispersion temperature, or is soluble in a water-immiscible solvent, said resin being an epoxy resin, a polyamide resin, a phenolic resin, a polyester resin, polyethylene or an ethylene co-polymer, and the dispersion is stabilised by a neutral, water soluble salt of a dimer and/or trimer of an ethylenically unsaturated fatty acid-i.e. an unsaturated carboxylic acid having 10 or more carbon atoms-in an amount of from 0.5 to 50% by weight of the fatty acid salt based on the total weight of dispersed substance. These dispersions may be produced by agitating in water at least one dispersible substance as defined, in the presence of a sufficient quantity of the said neutral salt. The aqueous dispersions particularly those containing metallic oxides may be used for coating and impregnating paper and textiles for fire proofing and water-proofing purposes. Example 4 gives details of a blend of dispersions of the above type containing ammonium phosphate which is used to impart flame retardance to greige canvas. The dispersion may contain 50 to 65% by wt. of the dispersed substances and may contain in addition to the materials specified at least one inorganic material which gives rise to phosphate or borate anions in the dispersion e.g. ammonium borate or an ammonium phosphate. The preferred dispersing agents are salts of dimerised linoleic acid, trimerised linoleic acid, or a neutralised polymer of an ethylenically unsaturated C 16  to C 18  acid e.g. oleic, linoleinic or ricinoleic acid. The salt which is the product of neutralising the acid with a water soluble base, e.g. an alkali metal or ammonium base, may be produced in situ and the salt formed may be insoluble in or incompatible with the dispersible substance at ambient temperature. The wax or resin may be dissolved in a water immiscible solvent prior to dispersion. Many suitable solvents are given. The wax used may be a chlorinated paraffin wax. The inorganic material used may be antimony trioxide, antimony pentoxide, zinc oxide ferric oxide, stannic oxide or manganese oxide. The resin or its solution may have a viscosity below 5000 cps at the temperature of dispersion. A preferred resin is polyethylene or an ethylene copolymer, e.g. with a polar monomer which may be propylene, vinyl acetate, methyl methacrylate or acrylic acid.
Patent GB-949103-A (GB)
Title: Improvements in fuel elements for nuclear reactors
Inventor: SKINNER RICHARD ANTHONY
IPC: G21C3/18
Filed: 1961-10-30
Abstract: 949,103. Nuclear fuel elements. NUCLEAR POWER PLANT CO. Ltd., and A. E. I. - JOHN THOMPSON NUCLEAR ENERGY CO. Ltd., [trading as NUCLEAR POWER GROUP]. Oct. 30, 1961, No. 38774/61. Addition to 947, 715. Heading G6C. A fuel element of the kind described in the parent Specification has a piercing member 9 adjacent the more readily oxidisable member 5 and when, due to leakage of coolant into the container 2, the member 5 is oxidised and increases in volume, it exerts a radial thrust upon the piercing member 9 the stem of which pierces the wall of the container 2. In the embodiment illustrated, it is not possible, in practice, to obtain a perfect seal between the end closure member 3 and the container 2 so that leakage of fission products past member 9 may be sufficient to produce a detectable signal on the leakage detection gear. Such a signal can, however, be ensured by including a small quantity of fissile or fertile material into the material of member 9. Alternatively, the members 5 and 9 are inserted into a radial hole in the fuel member 1.
Patent GB-1103431-A (GB)
Title: Improvements in aircraft
Inventor: SNELL LEONARD STANLEY
IPC: F02K1/00
Filed: 1964-09-23
Abstract: 1,103,431. Jet propelled aircraft. BRISTOL SIDDELEY ENGINES Ltd. 22 Sept., 1965 [23 Sept., 1964], No. 38804/64. Heading B7G. An aircraft has a gas turbine jet engine with front and rear pairs of swivellable propulsion nozzles projecting from opposing sides of the engine, front and rear ducting arranged to supply the nozzles with working fluid from the engine, and operating mechanism by which the nozzles are interconnected and swivelled, and the nozzles and their operating mechanism are mounted on the aircraft to remain operatively connected together when the engine is removed from the aircraft. The front nozzles 12 are rotatably mounted on a duct portion 23 fixed to the aircraft fuselage or wing mounted nacelle and have ring gears 24 through which they are rotated by air motors (53, Figs. 1 and 3, not shown). Stub ducts 20 through which flows compressor air in which fuel may be burnt before discharge, and the ducts 23 have neoprene feather seals 28 or bellows engaging intermediate ducts 22. Each duct 22 is connected to an adjacent duct 20 by an external ball joint 30-33 and when this is released, the duct 20 may be retracted from one of the seals 28 and into the opposite duct, to allow the engine to be moved. The rear nozzles, which are supplied with exhaust gas, may be similarly arranged, or may be connected to a T-duct (14, Fig. 1, not shown) having an expansion joint (7), and connected to the engine casing by a manacle clamp (19). Reference has been directed by the Comptroller to Specification 991,220.
Patent GB-1490599-A (GB)
Title: Process for moulding hollow toroidal articles
IPC: B29D30/00
Filed: 1975-09-23
Abstract: 1490599 Moulding a hollow toroidal article D V VAIDYA 23 Sept 1975 [4 Oct 1974] 39009/75 Heading B5A In a process for moulding a closed hollow toroidal article, e.g. a tyre, a split hollow mould 11 is supplied with fluent material in a quantity substantially less than that required to fill the mould cavity but sufficient to fill completely the entire lowermost radial section thereof when the cavity axis is horizontal, and the mould is slowly rotated about this axis to cause the material to set progressively inwardly from the cavity surface until all the material has solidified. The material may be a polyurethane elastomer heat set by rotating the mould in an oven or by dipping its lower part in a heated bath, or by spaced heaters.