baber/WOPTO huggingface dataset:
Patent GB-1015865-A (GB)
Title: Process and apparatus for specific gravity separation of mixtures of solid particles
IPC: B04C5/081
Filed: 1962-09-28
Abstract: 1,015,865. Hydrocyclones ; washing granular materials. MINISTER OF MINES AND TECHNICAL SURVEYS. Sept. 28, 1962 [Oct. 16, 1961], No. 36953/62. Headings B2H and B2P. Coal or ore pulp containing multi-size particles is cleaned by feeding an unstable aqueous suspension thereof into a hydrocyclone, Fig. 1, in which it passes successively first into a frusto-conical zone 19, Fig. 3, where the particles are stratified forming a gyrating, shifting bed from which coarse particles 22 of low specific gravity are discharged via the central upward current around the air core through a vortex finder 4, secondly into a zone 20 where coarse particles of intermediate specific gravity are separated by centrifugal force into two fractions of which the fraction 24 of lower specific gravity is first discharged from that zone through the vortex finder followed by the fraction 25 of higher specific gravity after it has been recirculated into the zone 19, and finally into a zone 21 where fine particles 23 of low specific gravity are separated and discharged through the vortex finder while the remaining suspension containing particles 26 of higher specific gravity are discharged through the outlet orifice 10. The particles 26 constitute the refuse or the ore concentrate depending on whether coal or ore pulp is being cleaned. The zones 19, 20, 21 are defined by successive frusto-conical surfaces 16, 17, 18 of decreasing included angle forming the lower portion of a vortex chamber 8 into the upper cylindrical portion 8b of which the suspension is fed by a tangential inlet 14. The surfaces 16, 17, 18 may be flat, as shown, or slightly curved to form a continuous convex taper. The vortex finder 4 is adjustable by means of screws 7 in the chamber upper portion 8b above which is provided a discharge chamber 5 having an outlet pipe 15. In Fig. 7 (not shown), a number of hydrocyclones 28, 29, 30 are connected in series, the raw material and water being fed to cyclone 28 at 31, 32. The underflow from cyclones 28, 29 is respectively fed to cyclones 29, 30, while the overflow from the latter are recirculated to the raw feed and that from cyclone 28 is fed to a dewatering device 34 from which clean material is discharged at 35. The overflow from device 34 is recirculated through the cyclones and the refuse is discharged from cyclone 30 at 38. The cyclones are operated under pressure by (a) providing a separate tank and surge tank assembly for each cyclone, or (b) feeding the secondary cyclones 29, 30 by gravity, or (c) introducing compressed air into the vortex of the primary cyclone 28 to maintain an air core therein. Relative dimensions and performance figures are given.
Patent GB-905120-A (GB)
Title: Improvements in and relating to barium compounds of alkyl phenols
IPC: C07C37/66
Filed: 1960-10-28
Abstract: A process of preparing a barium alkyl phenate comprises reacting barium phenate with an alkyl phenol, the barium phenate being optionally formed by reacting barium sulphide, phenol and alkyl phenol in the presence of water.  The examples relate to the preparation of barium salts of nonyl-, diononyl-, octyl- and tertiary butyl phenols.  The products are employed as antioxidants.
Patent GB-1456593-A (GB)
Title: Transfer printing process
IPC: C09B51/00
Filed: 1974-08-23
Abstract: 1456593 Transfer printing BAYER AG 23 Aug 1974 [24 Aug 1973] 37137/74 Heading D1B Textiles of synthetic or part synthetic material or non-textile plastic articles are transfer printed with dyes of formula in which the benzene rings may be substituted by one or more non-ionic substituents, e.g. F, Cl, Br, NH 2 , C 1  to C 6  alkyl, C 2  to C 6  alkenyl, C 1  to C 6  alkoxy, C 1  to C 6  alkylamino C 1  to C 6  dialkylamino, acylamino, cyano, or carboxylic acid ester group. Substrates printed are polyacrylonitrile, polyesters, polyamides, cellulose triacetate, cellulose 2¢-acetate.
Patent GB-358363-A (GB)
Title: A method of and apparatus for casting metals and ceramic masses and other suitable materials by the centrifugal process
IPC: B22D13/06
Filed: 1930-12-09
Abstract: 358,363. Casting machines. FRITZSCHE, P. C., 51, Sidonienstrasse, Leipsic, Germany. Dec. 9, 1930, No. 37172. Addition to 342,861. [Class 83 (i).] In a centrifugal casting machine as set out in the parent Specification, in which electrical heating elements are provided inside the melting chamber, means are now described for the supply of a neutral gas to the furnace to prevent oxidation of the material being cast or of any parts of the furnace subject to heat. The neutral gas such as nitrogen or hydrogen is supplied to the furnace by piping 14, a slip joint 13, further piping 12, part of which is flexible, and a refractory tube 11. The material 4 to be cast is placed at the mouth of a mould 7 in the melting chamber which is rendered airtight by a cover 9; neutral gas is supplied prior to melting the material at a pressure slightly above atmospheric so that the oxygen in the chamber is sufficiently rarefied, the material is then melted and rotation of the machine commenced. The oxygen in the melting chamber may be further eliminated by burning in it a suitable material or liquid such as a candle or spirit, either as the cover 9 is being sealed, or by igniting electrically after sealing ; a pressure gauge 15, which also acts as a safety-valve, is inserted in the supply pipe for the neutral gas. The counterweight 3, shown in the Figure, may be replaced by an extra furnace of equal weight.
Patent GB-447513-A (GB)
Title: Improvements in the manufacture of thermionic valves
IPC: B21J7/14
Filed: 1934-12-31
Abstract: An alloy for a tube serving as a core for an indirectly heated cathode of a thermionic valve comprises 98 per cent of nickel and 2 per cent of aluminium.
Patent GB-302663-A (GB)
Title: Projection process, particularly stage projection and means for carrying out the projection
IPC: G09F19/18
Filed: 1928-12-18
Abstract: 302,663. Geyling, R., and Planer, P. Dec. 19,1927, [Convention date]. Optical-projection apparatus comprises a plurality of projection systems 1 - - 3 with a single light source 4, one system receiving light directly and the others by means of reflectors 5 - - 8 or refractors; the slides used bear similar images, parts of which are obscured, and the images are projected into register on the screen. The reflectors 5, 6 are concave and may be replaced by condensers. The casings for the optical systems may be arranged in a triangle, and may be octagonal with faces in contact as shown, or cylindrical, &c. and connected by light passages.
Patent GB-619662-A (GB)
Title: Improvements in paper clips
IPC: B42F1/08
Filed: 1946-12-19
Abstract: 619,662. Making paper clips. KRAFT, L. H. Dec. 19, 1946, No. 37411. [Class 83 (ii)] [Also in Group XXV] A paper clip comprises a springing wire of constant cross-section bent substantially to U-form but with crossing shanks 1, lying resiliently close to each other between the middle of the shanks and their ball-shaped outer ends 2. In manufacture the shanks are firstly bent to cross each other, two sides being directed towards each other at the crossing point and then bent apart and turned, as shown in Fig. 3, so that the other sides are directed towards each other at the crossing point.
Patent GB-1046626-A (GB)
Title: Stove
IPC: F23C99/00
Filed: 1963-09-24
Abstract: 1,046,626. Burners; portable stoves. L. L. PALMER. Sept. 24, 1963 [Sept. 28, 1962]. No. 37461/63. Headings F4T and F4W. A stove comprises a rock wool fibre block 20 capable of absorbing liquid fuel and mounted in a cylindrical container 30, a mixing chamber 40 adjacent the bottom of the container 30, a vapour pervious firebrick chimney 50 between the mixing chamber 40 and an aperture 34 in the top of the container 30, a screen 60 between the mixing chamber 40 and the chimney, an air passage 70 between the mixing chamber 40 and an air vent aperture 35 in the side of the container 30 and a tapered plug for controlling the flow of air into the air passage 70. An upper element 90, Fig. 1 (not shown), for supporting an item to be heated is mounted on the container 30 by means of indentations 96 in a cylindrical slotted wall 91 resting on the top of the container 30. A perforated flue 93 is attached to the cylindrical wall 91 by ridged brackets 94 and is disposed with its bottom spaced from the aperture 34 in the top of the container 30.
Patent GB-967509-A (GB)
Title: Improvements in and relating to magnetic core structures
Inventor: ROSE KENNETH
IPC: H01F17/04
Filed: 1961-10-19
Abstract: 967,509. Transformers and inductors. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Oct. 19, 1962 [Oct. 19. 1961], No. 37560/61. Heading H1T. A hollow cylindrical core structure closed at both ends has two parts each having a plate portion 3, 6 and at least two wall portions 4, 13, the latter fitting together to form the curved surface of the cylinder, and from one of the ends 3, 6 a core member 8 extends along the axis of cylinder and on assembly touches the opposite end or leaves a small air gap. An axial hole (10, 9) is provided in each part, and these align on assembly to carry a bolt for fixing the structure together and to a base board. At least one of the wall portions 4 may be shortened to permit egress of the coil ends between part 4 and part 6. The structure may be of ferrite, and acts as an electromagnetic shield as well as forming a magnetic circuit. The coil may be wound on the former 11, whose top flange 11a is less in diameter than the distance between walls 7, or may be omitted, or it may be wound on the member 8 or on an insulating sleeve on member 8, the winding being carried out in situ in an electrical apparatus as described in Specification 967,510.
Patent GB-1038635-A (GB)
Title: Improvements relating to automatic guidance systems
Inventor: MONK MURRAY
IPC: G05D1/02
Filed: 1963-09-24
Abstract: 1,038,635. Inductive control of vehicles. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Sept. 14, 1964 [Sept. 24, 1963], No. 37573/63. Heading H4U. In a system for automatically guiding a selfpropelled machine, e,g. a moving-machine, under the control of a sensing head responsive to signal currents in a buried leader cable, the machine itself also carries an exciter energized by an A.C. generator driven by the machine engine for inducing the signal currents into the leader cable.
Patent GB-1505780-A (GB)
Title: Transmission overspeed inhibitor
IPC: G01P3/18
Filed: 1976-09-10
Abstract: 1505780 Change-speed gear; linkwork CATERPILLAR TRACTOR CO 10 Sept 1976 [25 Feb 1976] 37609/76 Headings F2D and F2K A drive transmission comprises a change-gear section 12, an input clutch-brake combination 23 and an output clutch-brake combination 24, the clutches 31, 48 being disengaged and the brakes 42, 50 engaged before change of gear under the control of a pneumatic circuit 22 and an input speed responsive device (Figs. 3 and 4) causes the clutch 48 to be disengaged when the speed of input shaft 13 exceeds a predetermined value (t) due to the selection of too low a gear for the vehicle speed. The speed responsive device has arcuate members 82 which move radially to slide a non-rotating member 66 and cause a pin 60 to engage in a notch 70 instead of a notch 68 to cause a ball 130 to close off the supply to clutch 48 and open an exhaust passage 122. The clutch 31 is engaged and disengaged by centrifugal effects in oil 36 to disengage the clutch at idle. The gear section 12 has sixteen forward gears and two reverse and its construction and control are substantially as described in Specifications 1,249,701, 1,249,702 and 1,249,703.
Patent GB-326568-A (GB)
Title: Apparatus for developing photographic papers or the like
IPC: G03D5/06
Filed: 1928-12-20
Abstract: 326,568. Norton & Gregory, Ltd., and Hickman, G. G. Dec. 20, 1928. Continuous apparatus for developing.-Developing solutions are applied to the print by a drum having a polished, non-absorbent surface and driven at a surface speed greater than the speed of the print. The print enters the machine at 3 and is fed by the conveyer band 4 to a steadying roller 13, and is then guided by fingers 14 and 15 under the developer-applying drum 16. The developer is led to the drum 18 through a conduit 21 connected by a pipe 22 to a pump (not shown), and is spread on the drum by an idle roller 23 having on its surface helical grooves of opposite sense. Excess developer falls into the sump 241 and is returned to the pump. The print is stripped from the drum 16 by spring fingers 27, the ends of which enter circumferential oblique but endless grooves on the drum, and is laid on to the conveyer 9 by a roller 29 having flexible wings 30. From a conveyer 9 the print passes between adjustable pressure applying rollers 34 which remove moisture, and is stripped therefrom by brush rollers 36.
Patent GB-1437122-A (GB)
Title: System for quenching hot coke
IPC: C10B39/12
Filed: 1973-08-09
Abstract: 1437122 Quenching coke KOPPERS CO Inc 9 Aug 1973 [5 Sept 1972] 37888/73 Heading F4B A coke quenching system comprises a track 19 alongside the battery 11 leading to a quenching station, an enclosed transfer car 15, enclosed conveyers 29, 31 and 33 at said station incorporating water sprays, connections 37 for vapours from each conveyer to a main 39 leading to a stack 41 and connections 49, 51 and 53 from the cars to a main 45 which is also connected to stack 41 via a scrubber 43 and fan 47. Sleeves 35 connect the conveyers to the bottom of each car and quenched coke is discharged via conveyers 55 and 57. The transfer car 15 is associated with a driven gas scrubber car 17 is disclosed in co-pending Application 31718/73. In a modification (Figs. 2 and 3) the transfer cars have removable hoppers which are lifted off at the quenching station and disposed on stands above enclosed vibratory quench conveyers. Another similar modification (Figs. 4 and 5) has a main running alongside the track associated with a coke guide and apparatus for collecting effluent evolved during coke pushing as disclosed in Specification No. 1,378,441. The coke transfer car is propelled by a locomotive. Yet another modification (Figs. 6 and 7) has the coke transfer car and self-propelled gas scrubber car with a turntable at the quenching station serving four radial tracks. The modification shown in (Figs. 8 and 9) has a lateral transfer table for the coke laden cars at the quenching station. A final modification (Figs. 10 and 11) has the transfer cars with removable hoppers which are lifted off by a crane at the quenching station on to one of four parallel tracks over quench conveyers. Each modification has the main removing vapours from the conveyers and a main removing fumes from the unloading cars or car hoppers via a scrubber.
Patent GB-1373726-A (GB)
Title: Production of flame-resistant laminates
IPC: G01M99/00
Filed: 1972-08-14
Abstract: 1373726 Flame retarded paper DYNAMIT NOBEL AG 14 Aug 1972 [27 Aug 1971 26 May 1972] 37904/72 Heading D1P [Also in Divisions B5 and C3] A flame-inhibited paper comprises a fibrous sheet impregnated with phenol-aldehyde resin, plasticiser and pentabromodiphenyl ether. Tri-, tetra-, hexa- and octa-brominated diphenyl ethers may also be present. The fibres may be of cotton, sulphited or sulphated cellulose of conifer origin, polyamide, polyester, mineral wool asbestos or glass and may be formed into a non-woven or woven fabric. Straw and sawdust may be present with the fibres. The plasticiser may be tributyl phosphate, tri (2- ethyl hexyl) phosphate, triphenyl-, tricresyl- or diphenylcresylphosphate, an acetal of formaldehyle, acetaldehyde, propionaldehyde with C 1 -C 18  saturated alcohol or phenol, diethoxymethane, diphenoxymethane diethoxy or diphenoxypropane. The brominated diphenyl ether may be in a specified solution with the resin. A plurality of layers of the impregnated paper can be laminated by pressing at 70-80 kp/cm<SP>2</SP> at 130-180‹ C for 30-90 mins. The laminate may comprise a copper foil electric circuit or cellulose fibres impregnated with melamine or epoxide resin on one or both sides. The laminate may be used as building material.
Patent GB-380179-A (GB)
Abstract: 380,179. Two-stroke engines. WILKINS, T., 19, St. David's Road, South, St. Annes-on-Sea. June 30,1931, No. 18823. [Classes 7 (ii) and 7 (vi).] Valves.-In two-stroke engines having cylinders of two diameters with the pump chambers and cylinders cross-connected, and in which rotary valves control the pump inlets as described in Specification 185,490, [Class 7 (ii), Internal-combustion engines, Arrangement &c. of], the rotary sleeve valve v<1> of each cylinder is formed with a byepass m<2> through its core, which, after the transfer ports w<2> are covered by the working piston w<1>, connects the chamber m<1> leading to the transfer ports to the mixture-inlet passage c<1> of the pump chamber p<1>, whereby the mixture remaining in the chamber m<1> is withdrawn. As described in the above-mentioned Specification, scavenging air is admitted by a passage c<3> to the chamber m<1> prior to the pumping of the charge through the passage t<1> leading from the connected pump chamber. The invention is described as applied to a three-cylinder radial engine.
Patent GB-1141186-A (GB)
Title: Dual walled capsules and method of manufacturing them
IPC: A01N25/28
Filed: 1967-08-18
Abstract: 1,141,186. Double-walled microcapsules. NATIONAL CASH REGISTER CO. 18 Aug., 1967 [23 Nov., 1966], No. 38067/67. Heading B8C. [Also in Division C1] Double-walled capsules are produced by dispersing particles or droplets comprising core material in an aqueous vehicle, the disperse and continuous phases each containing one of a pair of reactants which react together at the interfaces of the two phases to form a continuous protective polymeric coating around the droplets or particles, and subsequently encapsulating the coated discrete particles or droplets in a coacervate of hydrophilic polymeric material either whilst still present in the reaction system or in a separate system. Examples relate to the encapsulation of toluene diisocyanate, sodium fluoroescein and sodium dichromate which are coated in a silicone polymer produced by reaction of monosodium trimethyl silanolate (in the continuous phase) with a liquid silicone polymer or monomer dissolved in or coated upon the core material and then with a gelatine/gum arabic coacervate.
Patent GB-356062-A (GB)
Title: Improvements in obturating devices for lubricating boxes
IPC: F16N31/02
Filed: 1930-12-18
Abstract: 356,062. Retaining lubricant in bearings. BRITISH ISOTHERMOS CO., Ltd., Scotswood Works, Newcastle-on-Tyne.- (Assignees of Soc. Internationale Isothermos Soc. Anon.; 1, Rue du Rhone, Geneva, Switzerland.) Dec. 18, 1930, No. 38175. Convention date, Jan. 10. [Class 12 (i).] Lubricant leakage along a shaft C is prevented by a disc D and a smaller disc E rotating with the shaft and providing an oil collecting space 18 between them, the arrangement of the parts being such that at high speeds of rotation leakage oil is thrown off the perimeter 16 of the larger disc D under centrifugal force and at low rotary speeds the oil drips from the perimeter 16 under gravity. The disc D may be plane and the disc E conical, or both discs may be plane and spaced apart.
Patent GB-999224-A (GB)
Title: Coated polyolefin articles and processes
IPC: C08J7/052
Filed: 1963-09-27
Abstract: A heat sealable coating composition comprises the reaction product of at least one polyepoxide and at least one copolymer of vinylidene chloride with at least one a -b -unsaturated aliphatic carboxylic acid or anhydride of such acid.  The polyepoxide and copolymer may be applied as a solution to a polyolefin, steel or glass substrate, the solvent medium removed, and cross-linked in situ to form a coating on the substrate. The copolymer may be formed by suspension or emulsion polymerization technique, or by means of a free radical polymerization reaction, using 0.1 to 4% by weight of a catalyst, e.g. azo-bis-iso-butyronitrile or benzoyl peroxide, in solution in a solvent, e.g. methyl isobutyl ketone, methyl ethyl ketone, acetone or 50/50 (by volume) acetone/toluene, hexane, methanol or isopropanol. The copolymer may contain 75 to 95 mol. per cent vinylidene chloride and 5 to 25 mol. per cent acrylic, methacrylic, itaconic and crotonic acid or anhydride.  The polyepoxide may contain an average of more than one epoxide group per molecule and may be essentially linear materials, bisphenol A/epichlorohydrin materials, cyclo aliphatic materials, resorcinol diglycidyl ether materials, epoxy novalak materials, epoxidized fatty acid resins, and epoxidized silicone oil materials, specific examples being given.  Catalysts, e.g. tertiary amines, BF3 and BF3 complexes may be used to facilitate the cross-linking reaction.ALSO:A polyolefin substrate, which may be in the form of a film, is coated on at least one surface with the reaction product of at least one polyepoxide and at least one copolymer of vinylidene chloride with at least one a ,b -unsaturated aliphatic carboxylic acid or anhydride of such acid.  The film may have been roughed or etched by physical, electrical or chemical means prior to coating. The polyepoxide may contain an average of more than one epoxide group per molecule, examples being given.  The acid may be acrylic, methacrylic, itaconic or crotonic acid.  The polyolefin may be a homopolymer or copolymer of ethylene and propylene.  The coated polyolefin substrate may be produced by applying to at least one surface of the substrate a solution containing at least one polyepoxide and at least one copolymer of vinylidene chloride with at least one a ,b -unsaturated aliphatic carboxylic acid or anhydride thereof, removing the solvent medium from the solution and cross-linking the copolymer with the polyepoxide whereby the cross-linked copolymer forms a coating on the substrate.  The coating may be applied by dipping, brushing and roller-coating.  The coating of steel panels and glass fabric is also disclosed.
Patent GB-867610-A (GB)
Title: Improvements relating to fluid valves of plug cock type
Inventor: WILKINSON SAMUEL CLIFFORD WALT
IPC: F16K5/04
Filed: 1957-12-09
Abstract: 867,610. Valves. CRANE PACKING Ltd. Dec. 4, 1958 [Dec. 9, 1957], No. 38178/57. Class 135. The body of a cylindrical plug valve is split at 14, Fig. 4, so that the clamping means 9 serve to tighten the body on to the liner which surrounds the plug. The body may be made of several parts, Fig. 3, clamped together by screws 9 to tighten on to the liner 6 which surrounds the plug 7 and is received in body recesses 5 the walls of which are knurled or otherwise roughened at 5a so that the liner is held against rotation. The liner 6 is made of a low-friction material, e.g. a synthetic plastic such as nylon or polytetrafluorethylene. The screws 9 may be spring loaded so that any expansion or contraction of the body parts caused by temperature changes is automatically compensated for. A spring clip 17, Fig. 4, biases the bottom of the liner 6 against an internal body shoulder.
Patent GB-962855-A (GB)
Title: Process for the manufacture of ª‡-keto-aldehydes
IPC: C07D233/02
Filed: 1960-11-07
Abstract: a -Keto-aldehydes are obtained by reacting an a -keto triphenylphosphazine or the corresponding a -keto aldehyde-al-hydrazone with nitrous acid or an alkyl nitrite. In particular, compounds of the formula RCOCH=N-N=X where X is two H atoms or the group P Ph3 and R is a substituted or unsubstituted alkyl, aryl or heterocyclic radicle. Specifically R can be alkyl, hydroxyalkyl, methoxyalkyl, ethoxyalkyl, phenyl, nitrophenyl, tolyl, hydroxyphenyl, methoxyphenyl, acetylaminophenyl, carboxy and carbomethoxyphenyl, chloro and bromophenyl, naphthyl, furyl or thienyl.  A solvent may be present,and the keto aldehydes can be isolated as their 1:3 diphenyltetrahydroimidazole derivatives by precipitation with N,N1, diphenyl 1,2, diamino ethane. Examples describe the preparation of phenylglyoxal, p-nitro phenyl glyoxal, naphthyl glyoxal, their reaction products with N,N1-diphenyl-1, 2-diamino ethane, and the bis-2, 4-dinitrophenylhydrazone of methylglyoxal.