baber/WOPTO huggingface dataset:
Patent GB-840880-A (GB)
Title: Improvements in or relating to the synthesis of acrylonitrile
Filed: 1958-11-10
Abstract: Acrylonitrile is prepared by passing hydrogen cyanide and acetylene into a substantially nonaqueous catalytic system maintained at a temperature between 70 DEG  and 150 DEG  C. comprising a solution of cuprous chloride in an organic nitrile solvent which is substantially stable under the reaction conditions, said solution also containing an amide serving to increase the catalytic activity of the cuprous chloride.  The term "amide" is intended to include cyclic amides and hydantoins.  The amide hydrohalides where these are formed may also be used.  The nitrile solvent preferably dissolves at least 30% by weight of the solution of cuprous chloride, preferably 35-50% or more and an inorganic solubilizer such as ammonium or alkali metal halide should preferably not be required or used.  Superatmospheric pressures may be used.  The catalyst system preferably comprises at least 30% by weight of cuprous chloride, advantageously up to about 65%, 30-60% of organic nitrile solvent and 2-30% of amide promoter. Hydrogen chloride is preferably added to the catalyst, e.g. by including 1-20% by weight of HCl in the HCN feed; the concentration of HCl in the catalyst may be between 0.01 to 10% by weight.  The nitriles and amides preferably boil above about 100 DEG  C.  Ratios of acetylene to HCN of 25:1 to 2:1 are mentioned.ALSO:A substantially non-aqueous catalyst system for the preparation of acrylonitrile from acetylene and hydrogen cyanide comprises a solution of cuprous chloride in an organic nitrile, said solution also containing an amide promoter.  The term "amide" is intended to cover cyclic amides and hydantoins.  Many nitriles and amides are specified.  The amine hydrohalides may be used where they are formed.  The system preferably comprises at least 30% by weight, advantageously up to about 65%, of cuprous chloride, 30-60% of organic nitrile and 2-30% of amide.  Hydrogen chloride is preferably present, e.g. 0.01 to 10% by weight.
Patent GB-1373862-A (GB)
Title: Method of fabricating a temporary apertured mask electrode for  a colour television tube
IPC: H01J9/14
Filed: 1972-08-02
Abstract: 1373862 Luminescent screens RCA CORPORATION 2 Aug 1972 [2 Aug 1971] 36109/72 Addition to 1311313 Heading HID In the manufacture of a colour television screen by exposure of a photo-resist through a shadow mask which is used in the completed tube the apertures in the shadow mask are made smaller for the photo-resist process by coating at least one surface of the mask with a film material having a thermally reversible viscosity that is lowered by heating and then heating the coated surface until the lower viscosity of the film causes the film to break and to collect in annular deposits around the inner periphery of each mask aperture. The film material may comprise polyvinyl alcohol, an aromatic compound, water, and a plasticizer selected from the groups of glycerines, ethers, ethanolamine salts, thiocyanates, glycols, and formamides. One suitable composition comprises 3% polyvinyl alcohol, 1% red dye, 0À4% wetting agent and the balance water. This has a viscosity/temperature curve as shown at 77 in Fig. 6, as compared with that shown at 80 for a known thermally irreversible composition. When a mask coated with the material is heated, the viscosity drops rapidly down to the point 82 where the film breaks due to surface tension; with continued heating the viscosity increases as shown at 83 and the peripheral regions of the coating on the wall of the apertures harden. It is preferable to heat the mask in a closed chamber so that the vapour pressure increases and the viscosity follows the curve 84. This has a relatively flat minimum region 85 so that differences in temperature over the surface of the mask make little difference to the reduction in size of the apertures by the coating. When 5% ethylene glycol is added to the above composition and the mask is heated in a closed chamber the viscosity follows the curve 79. Two other suitable compositions comprise 5% polyvinyl alcohol, 1% dye, 44% water, and 50% ethylene glycol or glycerine. A convex mask may be rotated slowly about its centre whilst its convex surface extends down into a tank holding the liquid film-forming material, and then tilted to spread the liquid over the surface without forcing it through the apertures. Alternatively the mask may be rotated with its convex surface upwards whilst the material is flowed over the mask, and then rotated more rapidly to remove excess liquid. After the screen has been made the temporary coating may be removed by baking or chemical dissolution to restore the mask to its original condition. This process may be carried out at the same time as a similar process is used to remove resist material from the screen, by baking both at once or by applying dissolution techniques to both at once.
Patent GB-1146277-A (GB)
Title: Benzothioxanthene dyestuffs and process for their preparation
IPC: C09B57/14
Filed: 1966-08-12
Abstract: 1,146,277. Benzothioxanthene dyes. FARBWERKE HOECHST A.G. 12 Aug., 1966 [12 Aug., 1965], No. 36259/66. Heading C4P. The invention comprises dyestuffs of the formula wherein R represents a hydrogen atom, an alkyl, aralkyl, cycloalkyl or aryl group which may be substituted, a heterocyclic ring or a hydroxy or amino group, R 1  and R 2  each represent a hydrogen or halogen atom, or an alkyl, alkoxy, hydroxyalkoxy, CN or carbalkoxy group and R 3  represents an alkyl group which may be substituted. They may be obtained by (a) nitrating a compound of the formula (b) first nitrating a compound of the formula wherein R 4  represents an acyl group which may be substituted, saponifying the acyloxy compound obtained to give the corresponding hydroxy compound and subsequently alkylating this compound; or (c) nitrating a compound of one of the formulµ and condensing the nitro compound thus obtained with a compound of the formula Examples are given for the production of the dyes. They are useful for dyeing synthetic materials. A specified material is polyethylene glycol terephthalate.
Patent GB-1044943-A (GB)
Title: Improvements relating to incandescent gas fires
Inventor: OATLEY ARTHUR FREDERICK
IPC: F24C3/04
Filed: 1961-10-11
Abstract: 1,044,943. Air heaters. OATLEY TECHNICAL DEVELOPMENTS Ltd. Oct. 11, 1962 [Oct. 11, 1961], No. 36432/61. Heading F4S. An incandescent gas fire has a convection air heater 21, the front wall 22 of which is apertured opposite the backs of the radiants 10 which rest against this wall. The gas fire comprises a frame 4 within a casing 5. The radiants 10 are mounted above a double row of burner jets 9 on the burner tube 8 which is mounted on a flange 7. A heat exchanger 13 leads to a flue outlet 15, and the air heater 21 fitted behind the radiants. The air heater is mounted in a duct 16 having integral sides 17 and a back plate 18. A corrugated partition 23 is secured behind the front wall 22. Air enters through the grille 28, passes through and around the air heater and issues from the grille 29.
Patent GB-1357428-A (GB)
Title: Fluid control valves
IPC: F16K1/38
Filed: 1971-08-03
Abstract: 1357428 Valves ALENCO INDUSTRIAL COMPONENTS Ltd 3 Aug 1972 [3 Aug 1971] 36484/71 Heading F2V A valve for use with high temperature corrosive gases and liquids in gas chromatography comprises an axially movable, screwed spindle 15 with a tapered end part 15a formed with a flat for controlling the rate of flow from an inlet 11 to an outlet 12 through an annular, P.T.F.E. seat 16, the maximum flow rate being determined by the pre-setting of a secondary valve 22 at the outlet. The latter valve is in the form of a bolt.
Patent GB-794727-A (GB)
Title: Improvements relating to electrical timing systems
IPC: B61L17/00
Filed: 1954-12-17
Abstract: 794,727. Indicating train speeds. WESTING- HOUSE BRAKE & SIGNAL CO., Ltd., and DUCKITT, H. Dec. 9,1955 [Dec. 17, 1954], No. 36558/54. Class 105. [Also in Groups XXXV and XXXVIII] In order to check that the speed of a vehicle passing over a section of track is below a predetermined value, the vehicle starts a time interval by closing a switch 9 as it enters the section, the duration of the time interval being compared with a standard value by charging a condenser 19 during that time at a predetermined rate, and allowing it to discharge through a relay winding 16 whereby if the charge exceeds a predetermined value the discharge current is large enough to energize the relay and operate an indicator citcuit. On closing of the switch 9, the relay 10 operates, contact 13 changes over and condenser 19 is charged from a stabilized D.C. supply through rectifier 15. At the end of the time interval, when the vehicle leaves the track section, switch 9 is opened, relay 10 falls and change-over contact 13 completes the discharge circuit for condenser 19 through winding 17 of the relay 16. If the discharge current is sufficiently high, relay 16 is energized, closing a holding circuit via contact 21, and an indicating or control circuit via contact 23.
Patent GB-1284082-A (GB)
Title: Improvements in and relating to polymer compositions
Inventor: PENNECK RICHARD JOHN
IPC: H01B3/30
Filed: 1968-08-01
Abstract: 1284082 Filled non-silicone/silicone polymer mixtures RAYCHEM Ltd 31 July 1969 [1 Aug 1968] 36758/68 Headings C3P and C3T A new composition comprises a thermoplastic or elastomeric non-silicone polymer, a treated filler, and a thermoplastic or elastomeric silicone polymer. The treated fillers are defined as inorganic compounds containing SiOSi bonds and having a BET surface area of at least 40 m.<SP>2</SP>/g., treated with one or more silanes having bonded to the or each Si atom by a C-Si bond at least one organic group; they are silicas or silicates treated with a silane R n SiX 4-n , wherein R is a C-Si bonded organic group, X is an atom or group connected to Si other than by a CSi link, e.g. halogen, OH or C 1-4  alkoxy groups, and n is 1, 2 or 3. Suitable non-silicone polymers are listed, being polymers and copolymers of olefins, halo-olefins and acrylic monomers. The silicone may contain methyl, vinyl, phenyl, trifluoropropyl, cyanoethyl or cyanopropyl groups, or carborane or silphenylene groups. Suitable peroxide catalysts are listed. Allyl esters may be co-cured with the silicone. Preferably the non-silicone polymer and the filler are mixed first. In the examples compositions are prepared containing 20-60 gms. of a non-silicone polymer which is low- or high-density polyethylene, a low-density polyethylene/ethyleneethyl acrylate copolymer mixture, an ethyleneethyl acrylate / ethylene-propylene-ethylidene norbornene mixture, or a copolymer of vinylidene fluoride with hexafluoropropene, with hexafluoropropene and tetrafluoroethylene, or with 3-hydro-pentafluoropropene; 30-70 gms. of a silicone which is a methyl phenyl vinyl polysiloxane, a dimethyl polysiloxane or a methyl phenyl polysiloxane; 10-30 gms. of a filler which is silica aerogel or a hydrated silica treated with dimethyl dichlorosilane, vinyl trimethoxysilane, methacryloxypropyl trimethoxysilane, vinyl triethoxysilane, trimethyl chlorosilane, glycidoxypropyl trimethoxysilane, diethanolaminopropyl triethoxysilane or 3 : 4- epoxy-cyclohexylethyl trimethoxysilane, or a calcium silicate or a calcium aluminium silicate treated with this last silane; 0À2-2 gms. of triallyl cyanurate; 0À1-5 gms. of 2 : 5-dimethyl-2 : 5-bis-(tertiary butyl peroxy)-hexyne- 3, as curing agent; usually 0À5-5 gms. of calcined Fe 2 O 3  and 2 gms of poly-(trihydroquinoline); and in one instance 5 gms. each of dibasic lead fumarate and calcined MgO. In one example the filler is treated with silane after being mixed with the polyethylene.
Patent GB-797704-A (GB)
Title: Improvements in jewellery for personal wear
IPC: A44C11/00
Filed: 1955-12-24
Abstract: 797,704. Beads for necklaces, bracelets &c. PRIOR, J. Dec. 24, 1955, No. 37026/55. Class 43 Moulded beads A for the formation of necklaces, bracelets &c. of the kind wherein a projection on one bead is sprung into a recess in an adjacent bead, are prevented from relative rotary movement when thus coupled, by forming each projection with a head a<SP>1</SP> of non-spherical shape and non- circular cross-section in the transverse plane at right angles to the common axis of bead and projection, the recess b'in the adjacent bead with which the head a<SP>1</SP> is to be interengaged being of corresponding shape and cross-section in a transverse plane at right-angles to the axis thereof. At least one of each pair of interengaged beads is made of resilient material, and the recesses b are entered through a mouth formed with a rib or restriction b<SP>1</SP> making it of smaller cross-section than the interior of the recess. The head a<SP>1</SP> is connected to the bead A by a shank a which may be of the same cross-sectional contour as the head. As shown the heads a<SP>1</SP> are ellipsoidal with their major axis at right-angles to the longitudinal axis through the bead, recess b and shank a. Alternatively the headis a<SP>1</SP> may be of other non-spherical shape, e.g. of rectangular cross-section, the recesses b being shaped accordingly. In a modification, Fig. 7, a bead A' is formed with two diametrically opposite projections each comprising a shank a and an ellipsoidal head a<SP>1</SP> for engagement with a bead wherein two diametrically opposite recesses together form an axial bore of cross-section such that relative rotary motion between two coupled beads is prevented.
Patent GB-863251-A (GB)
Title: Ram device or coal plough or scraper box which is pulled along the coal face by a draw chain
IPC: E21C27/34
Filed: 1959-11-02
Abstract: 863,251. Mining machinery. GEWERKSCHAFT EISENHUTTE WESTFALIA. Nov. 2, 1959 [Nov. 12, 1958], No. 37135/59. Class 68(1). In a plough, drawn by a chain 13 along a coal face 24, the point 21, at which the chain is attached to the plough, is movable between limits so that the said point is always near the end 11 or 12 of the plough which is, at the moment, cutting, whereby the cutting pressure against the coal face is increased and the pressure of the trailing end of the plough on the face is relieved. The chain 13 is endless and reversible and is attached to a block 19 by a shear pin 21. The chain passes through a duct 20 in the block 19 which is slidable between shoulders 17, 18. The return run 15 of the chain may pass through the plough and preferably passes through a duct 22 in the block 19. The feed pressure of the plough on the coal face results from the change in direction of the taut chain 13 at the point 21 and is augmented by the return run of the chain.
Patent GB-1444412-A (GB)
Title: Process for curing a radiation-curable resin
IPC: B29C71/04
Filed: 1973-08-06
Abstract: 1444412 Radiation curing unsaturated polyester resins NITTO BOSEKI CO Ltd 6 Aug 1973 [4 Aug 1972] 37175/73 Heading C3P A process for rapidly curing an unsaturated polyester resin composition comprises irradiating the resin composition with ionizing radiation, the resin composition containing at least 50 parts by weight, per 100 parts by weight of resin, of one or more powdered filler materials composed of a compound of an element having an atomic number of 11 or more (excluding materials other than CaCO 3  comprising a basic compound of a metal selected from Groups I and II of the Periodic Table). The filler material may be gypsum, cement, quartz, calcium carbonate, mica, glass, diatomaceous earth, clay, talc, asbestos, or red mud of bauxite. Suitable forms of radiation include α-rays, #- rays, γ-rays, X-rays, proton rays and/or accelerated electron beams. In an example the resin is derived from phthalic anhydride, maleic anhydride and propylene glycol and is dissolved in styrene monomer. Applications include paints, decorative sheets, adhesives and binders.
Patent GB-433359-A (GB)
Title: Improvements in fuel injection pumps for internal combustion engines
IPC: F02M57/02
Filed: 1934-12-28
Abstract: 433,359. Fuel - injection pumps. KOCKUMS MEKANISKA VERKSTADS AKTIEBOLAG, Malm÷, Sweden. Dec. 28, 1934, No. 37183. Convention date, Nov. 13. [Class 102 (i)] In a fuel-injection pump, in which the plunger is operated by a piston 1 acted on by fluid pressure supplied by a pipe 12, the plunger carries a valve 6 by means of a helical spring 9. The valve 6 closes the discharge passage 7 at the end of the discharge stroke, thus terminating injection and cushioning the plunger. The nozzle 4 is controlled by a needle valve 2. The fuel is supplied to the pump under pressure through a passage 11 provided with a check valve.
Patent GB-929100-A (GB)
Title: Improvements in or relating to synchronous motors
IPC: G04C15/00
Filed: 1961-10-17
Abstract: 929,100. Motor driving arrangements. W. KOHLHAGEN. Oct. 17, 1961 [Oct. 19, 1960], No. 37214/61. Class 35. [Also in Group XXIV] Noise from a synchronous motor having a toothed gear drive is reduced by forming the first or second gears of the drive from resilient rubber-like material. Figs. 1 and 2 show a synchronous clock-type motor comprising a coil 22 wound on a ferromagnetic core 20 attached to a ferromagnetic housing 16. Pole plates 24, 26 are respectively attached to the housing 16 and the core 20. Polepieces 30, 32 formed in the plates 24, 26 form an interdigitated field structure. A permanent magnet rotor 14 housing polepieces f1, f2 is carried by a shaft 34 journalled in bearings 38 and supported by a plug 40. The space 36 is filled with lubricant. A Neoprene pinion 46 is forced over the end of shaft 34 and engages a metallic gear 48. The positions of gears 46, 48 may be interchanged. In Fig. 4, the shank 56b of the Neoprene pinion 46b forms a bush attaching the rotor 14b to the shaft 34b. The axis of shaft 34b is preferably so close to that of the gear 48b that the toothed end 58b of the pinion becomes axially flexed when the gears are meshed. This reduces operating noise. In Fig. 6 (not shown) the rotor is pivoted on a fixed stub shaft projecting from the core 20. Preventing incorrect rotation.-In Fig. 7, the Neoprene pinion 46e carries a lug 111 arranged to engage a spring finger 114. If the motor rotates in the wrong (clockwise) direction, the shoulder 112 runs up against the end of the spring finger 114, the rebound correcting the direction of rotation.
Patent GB-1337527-A (GB)
Title: Dithiophosphoric acid ester amides and their use as insecticides acaricides and nematocides
IPC: C07F9/24
Filed: 1972-08-11
Abstract: 1337527 Pesticidal dithiophosphoric acid esteramides BAYER AG 10 Aug 1972 [11 Aug 1971] 37369/72 Heading C2P Novel compounds of Formula I where R is C 1-4  alkyl, a is 0, 1 or 2 and X is halogen, C 1-4  alkyl or methylmercapto, the X's being identical or different when a is 2, may be prepared (a) by reacting n-propylmercaptan in the form of a metal salt or in the presence of an acid-binding agent, with a compound of Formula III  or (b) by reacting a salt of Formula IV where M is ammonium or metal with an npropyl halide. The compounds of Formula I have insecticidal, acaricidal and nematocidal properties and may be used as the active ingredients in conventional pesticidal compositions, optionally together with other active ingredients.
Patent GB-1483438-A (GB)
Title: Blowdown arrangement
IPC: F22B1/02
Filed: 1975-09-15
Abstract: 1483438 Blowdown in shell and tube steam generators WESTINGHOUSE ELECTRIC CORP 15 Sept 1975 [18 Sept 1974] 37805/75 Heading F4A A steam generator, of the kind employed in nuclear power plants in which a U-tube bundle 3 containing heating fluid is disposed within a shell 7 into which feed water is passed (at 27] and water return path is defined adjacent the shell and a tube sheet 13 by a member 31 and a distribution plate 45, is provided with a blowdown tube 51 which is disposed between plate 45 and tube sheet 13 beneath an opening 49 formed in the plate 45 in the hot leg region of the tube bundle; the blowdown tube having an apertured portion 55 that extends across the opening 49. A preheater arrangement 35 is arranged at the feed water inlet 27 about the cold leg of the U- tube bundle.
Patent GB-1196937-A (GB)
Title: Baking Enamels Based on Aqueous Synthetic Resin Binder Formulations
IPC: C09D161/06
Filed: 1967-08-17
Abstract: 1,196,937. Aqueous synthetic resin baking enamel. BADISCHE ANILIN- & SODAFABRIK A.G. 17 Aug., 1967 [18 Aug., 1966], No. 37846/67. Heading C3R. [Also in Division B2] An aqueous baking enamel contains (a) 4.5 to 70 p.b.w. water-compatible aminoplast or phenolic resole precondensate, (b) 95 to 30 p.b.w. incompletely condensed alkyd resin having unesterified COOH and OH groups which has been rendered water-compatible with ammonia or a nitrogenous organic base, and, as a flow improver, (c) 0.5 to 5 p.b.w. of an ether of boiling point between 100‹ and 300‹ C. and formula R<SP>1</SP>-O-R<SP>2</SP> where R<SP>1</SP> and R<SP>2</SP> are hydrocarbon radicals, the total number of C atoms in the hydrocarbon radicals being 9 to 20; (a) + (b) + (c) total 100 p.b.w. Several ethers are mentioned. The enamels may be coated on sheet iron and baked at 120‹ to 190‹ C. for 10 to 100 minutes. In the examples : (a) is 25 p.b.w. of a commercial 70% solution of hexamethoxymelamine in propanol/water, and (b) 73 p.b.w. of a commercial 55% solution in glycol ether/water of a dehydrated castor oil modified phthalic anhydride/trimethylol propane alkyd brought to pH 7 to 8 with triethylamine, (c) is di-2-ethylhexyl, dinonyl, or 2-ethylhexen-(1)-yl 2-ethylhexyl ether and the enamels also contain 40 or 50 p.b.w. of water.
Patent GB-1361732-A (GB)
Title: Cleaning of gramophone records
IPC: G11B3/58
Filed: 1972-08-15
Abstract: 1361732 Cleaning gramophone records MULTICORE SOLDERS Ltd 15 Aug 1972 38099/72 Heading G5R A device for cleaning gramophone records comprises a first part 1 secured by adhesive to a pick-up cartridge 3 mounted on arm 4 and second and third parts 10, 11 and 16, 17 carrying, respectively, a brush 14 and cleaning pad 23. The second and third parts are separately mounted on a pivot pin formed on the first part 1 and stops are provided for preventing the brush and pad moving by anti-clockwise movement to a position directly below the pivot pin axis. The brush and pad can be moistened by water, or an anti-static or cleaning fluid.
Patent GB-1112722-A (GB)
Title: Alkyl aminochloropyrazinoates
IPC: C07D475/04
Filed: 1965-09-07
Abstract: The invention comprises C1- 5 alkyl-3-amino-5 -chloro-6-bromopyrazinoates and a general process for making C1- 5 alkyl pyrazinoates of the formula <FORM:1112722/C2/1> wherein R is an alkyl group and X is hydrogen, chlorine or bromine, or a C3- 6 cycloalkyl, mononuclear aryl, trifluoromethyl or mononuclear haloaryl group, by treating the N-oxide of the formula <FORM:1112722/C2/2> with phosphorus oxychloride.  Suitable reaction temperatures are 50-105 DEG  C.  An inert solvent may be added, e.g. hydrocarbons, halogenated hydrocarbons or dimethyl formamide, or excess phosphorus oxychloride may serve as the solvent.  The compounds of the Formula (I) are used as intermediates in the preparation of pyrazinoyl-guanidines.  Examples relate to the methyl pyrazinoates wherein X is chlorine, bromine, cyclohexyl, phenyl, and p-chlorophenyl. Compounds of the Formula (1) are made by treating the alkyl 3-aminopyrazinoate with m-chloroperbenzoic acid.