baber/WOPTO huggingface dataset:
Patent GB-1399614-A (GB)
Title: Separation of solids
IPC: B03D1/00
Filed: 1972-06-12
Abstract: 1399614 Separating solids CANADIAN INDUSTRIES LTD 8 June 1973 [12 June 1972] 27251/72 Heading B2H Hydrophobic solid particles are separated from other solid particles in a mixture of the solid particles by (1) preparing an aqueous suspension of the mixture of the particles, (2) adding a hydrophobic liquid to the aqueous suspension; (3) contacting the aqueous suspension containing the hydrophobic liquid with a hydrophobic solid substrate that is wetted by said liquid so that the hydrophobic particles adhere to the liquid on the surface of the solid substrate; (4) removing the hydrophobic liquid holding the hyrophobic particles from the surface of the solid substrate and (5) recovering the hydrophobic particles. The solids, e.g. ore particles (examples of which are given) to be separated may be inherently hydrophobic or can be made hydrophobic, e.g. through absorption of a surface conditioner, or, e.g. in the case of oxidised ore particles, by sulphidisation with a water soluble sulphide. The surface conditioner may be .a flotation agent selected from xanthates, thiocarbonates, thiophosphates, long chain aliphatic acids and aliphatic amines. The solid substrate employed may be in the form of films, fibres, filaments, helices, pellets, discs or cores made of polyethylene, polypropylene, polyvinyl chloride, polyvinylidene chloride, polystyrene, polyethylene terephthalate or a polyamide (examples of which are given). Alternatively the substrate may consists of metal or ceramic particulates. The hydrophobic liquid may be an aliphatic or aromatic hydrocarbon, e.g. fuel oil, petroleum ether, benzene, nitrobenzene, toluene or xylene. The hydrophobic particles may be removed from the liquid covered substrate by the use of mechanical means; by treating the substrate with steam to volatilise the liquid and flush off the particles; by treating the substrate with a surface active agent; or by washing the substrate with a solvent (e.g. methanol) for the liquid.  In an illustrated embodiment the suspension of particles to be separated and to which hydrophobic liquid has been added is passed through a column which is packed with poly-, mer fibres and/or helices. A number of columns may 'be 'arranged in parallel.
Patent GB-466636-A (GB)
Title: Improvements in or relating to sliding roofs for vehicles
IPC: B60J7/053
Filed: 1935-10-03
Abstract: 466,636. Vehicle opening - tops. BISHOP, W. H. Oct. 3, 1935, Nos. 27253 and 30637. [Class 108 (i)] In sliding roofs for vehicles in which a fixed canopy closes the rear part of the roof opening and over or under which the sliding panel is adapted to slide, the side edges of the fixed panel are spaced from the roof side members and supported by members which permit free passage of air to and from the interior of the vehicle. The roof opening is closed at the rear by a fixed canopy a over which a sliding panel b slides and arranged around'the roof opening is a water-check tray c having an exterior upstanding flange d by which it is connected to the roof sides and an interior flange h, the tray being supported on a wooden fillet l to which upstanding members k having ventilation holes s are secured and which support the fixed canopy. A space r is provided between the margins j of the fixed canopy and the side edges of the roof. The sliding panel has turned down flanges t and provided with runners u. In another form the canopy is connected by spaced brackets to the flange d and the sliding panel slides under the canopy on the flanges h. Fig. 7 shows the fixed canopy 2 secured to fillets 4 by flanges 3 and the fillets are secured to the tray c by screws 5 and rubber washers 7. Guides 9 for the sliding panel are provided.
Patent GB-469295-A (GB)
Title: Improvements in or relating to signal amplifiers and repeaters
IPC: H01J25/34
Filed: 1936-10-07
Abstract: 469,295. Modifying circuits to improve transmission. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Oct. 7, 1936, No. 27275. Convention date, Oct. 7, 1935. [Class 40 (iv)] [Also in Group XL] Signal attenuation in a line transmission system is overcome by negative-conductance electron-discharge elements connected across the line either at intervals or continuously along the line. As shown in Fig. 3, the negativeconductance element comprises a pair of valves T with their plates connected to opposite sides of the line and their cathodes joined to each other. Each plate is cross-coupled through condensers C<1> to the opposite grid, and the grids are biassed by a resistance r" placed between the plate battery B and the cathodes. The element is connected between equal resistances and inductances on each side of the line, which match the line impedance so that reflections are not produced. In another arrangement, Fig. 5, the plates A and grids G<1> are elongated in the direction of the length of the line, which extends perpendicular to the plane of the paper. The electrodes are arranged round a common cathode CA<1> in a common envelope. The cross-coupling capacities K<1> may be provided at intervals along the electrodes, or may be constituted by continuous members adjacent the electrodes. Grounded strips P may be used to shield each plate from the control of the opposite grid. In Fig. 4, the negative conductance is a dynatron with its plate A and grid S formed as extended cylinders around an axial cathode CA, and connected either directly or through condensers N, N<1> to the inner and outer conductors of concentric transmission lines 0. The grid and plate regarded as a transmission line have the same characteristic impedance as the lines 0. They may be of the same diameters as the conductors, or their diameters may be different provided they are in the same ratio. Distributed capacities K<1> connect the grid to the cathodes. The entire line may operate as a negative conductance throughout its length. Fig. 6 shows a negative conductance in. the form of an electron multiplier. Oppositely-disposed metallic strips D primed by an oscillator 0 are enclosed in an envelope E and subjected to a magnetic field produced by a. coil M. Anodes F are held at positive potential by a source B<1>, the voltage of which is raised until a negative conductance exists between the plates D. These plates are elongated to any convenient length in a direction perpendicular to the paper to form a portion of a transmission line as in Fig. 4. An advantage of the arrangements is that signals may continue to pass along the line even though the negative conductance elements cease to function as amplifiers. In a re-diffusion system for supplying several radio receivers from a single aerial, the amplifier may form a section of the radio-frequency distributing-line, Fig. 7 (not shown). The transmission of television signals is also referred to.
Patent GB-208830-A (GB)
Title: Improvements in or relating to oil cooking stoves and the like
IPC: F24C5/06
Filed: 1922-10-09
Abstract: 208,830. Sepulchre, L., and Soc. Anon. Chauffage et Eclairage Sepulchre. Oct. 9, 1922. Portable oil-stoves; hot-plates.-An oil cooking- stove comprises a base having a lower platform b9 which supports an independent lamp c, and an upper part d<1> which carries both an air diffuser d or a flame-spreader or the like, and a detachable smoke-box or chamber e of large size, which supports the vessels to be heated. In the stove shown, the rectangular chamber e, which is hinged at one edge by a pin e<1> to the base, is provided with a lower coned rim which fits within the upturned edges of the part d<1>; at the top it carries a hot-plate f, having oblique edges f<3> making a tight joint. The lamp is positioned by guides c<1> and by a depending cross-bar d which engages the wick-tube. Fig. 10 shows a modification in which the hot-plate g overhangs the sides of the chamber e and is provided with an elongated opening g<1> which may be divided into two or three openings by sliding plates g<3>.
Patent GB-1473176-A (GB)
Title: Calibrating device for light scatter photometering instrument
IPC: G01N21/51
Filed: 1974-06-19
Abstract: 1473176 Photometer calibration PFIZER Inc 19 June 1974 [19 June 1973] 27285/74 Heading G1A [Also in Divisions G2-3] A filter for calibrating a light-scatter photometer, e.g. that described in Specification 1436182, comprises an elongate plate 202 made up from two wedges 204, 206 of highly transparent and neutral density glass respectively, the surface 210 being matte to scatter light passing through the plate. An additional flat section 212 of neutral density glass may be provided at one end of the filter, in front of which a variable leaf (242), Fig. 10 (not shown) is rotatably mounted to adjust the amount of scattering light passing through section 212 to a standard reading. In use, the plate 202 is traversed in a series of steps over its length past the photometering station; this provides a series of readings which may be compared with a standard set of readings obtained by an accurately functioning standard instrument.
Patent GB-1441714-A (GB)
Title: Substituted triazines
IPC: C07D251/50
Filed: 1974-06-19
Abstract: 1441714 Carbamyloxy- and carbamylthio alkylamino - s - triazines CHEVRON RESEARCH CO 19 June 1974 27288/74 Heading C2C Novel compounds have the Formula I wherein R is chlorine, methoxy or methylthio; R<SP>1</SP> is alkyl of from 1 to 6 carbon atoms, alkenyl of from 3 to 6 carbon atoms, or alkoxyalkyl of from 2 to 6 carbon atoms; R<SP>2</SP>, R<SP>3</SP>, R<SP>4</SP> and R<SP>5</SP>, which may be the same or different, are hydrogen or alkyl of from 1 to 6 carbon atoms; R<SP>6</SP> is alkyl of from 1 to 6 carbon atoms, or a phenyl, alkylphenyl or phenylalkyl group containing up to 10 carbon atoms optionally substituted by from 1 to 3 fluorine, chlorine or bromine atoms; and Y is oxygen or sulfur. The compounds of Formula I are obtained (1) by reacting a chloro-s-triazine of Formula III with a substituted amine of formula in substantially equimolar amounts in an inert solvent at 25-100‹ C. and in the presence of a strong base; or (2) by reacting a compound of Formula VI with a carbamyl chloride of formula, Cl-CO-NR<SP>5</SP>R<SP>6</SP> under the same conditions as (1); or (3) [when R<SP>5</SP>=H] by reacting an isocyanate of formula R<SP>6</SP>-N=C=O with a triazine of Formula VI. The intermediate, 2-chloro-4-isopropylamino- 6 - (2 - mercaptoethylamino)- s - triazine, is obtained from cyanuric chloride by reaction with isopropylamine and then with 2-mercaptoethylamine. The substituted triazines of Formula I possess herbicidal, bactericidal and fungicidal properties.
Patent GB-1310918-A (GB)
Title: Indoline-2-spiro-2,-benzo-b-pyrans
IPC: G03C1/685
Filed: 1970-06-05
Abstract: 1310918 Indoline- 2 - spiro - 2<SP>1</SP> - benzo- (b)- pyrans COMPAGNIE DE SAINT-GOBAIN 5 June 1970 [6 June 1969] 27289/70 Heading C2C Novel 1 - benzyl and 1 - cyclohexyl - 3,3- dimethyl - indoline- 2- spiro- 21 - (61 - nitro - 8<SP>1</SP>- methoxy benzo-(b)-pyrans) having the formulae are prepared by condensing 5-nitro-3-methoxysalicylaldehyde with a 2-methylene-indoline base. The novel compounds are photochromatic.
Patent GB-426407-A (GB)
Title: Improvements in or relating to friction clutches
IPC: F16D43/12
Filed: 1933-10-04
Abstract: 426,407. Friction clutches. NEW CONSOLIDATED GOLD FIELDS, Ltd., FREEBORN, J. E., DEGENHARDT, W. R., and FRAINE, A. F. DE, 49, Moorgate, London. Oct. 4, 1933, No. 27355. [Class 80 (ii)] A plate clutch comprises sets of discs 34 rotatably mounted on eccentric pins 32 secured to the driven shaft 24, the discs co-operating with plates 16 slidably carried by a flange 12 formed on the driving shaft 10. Engagement may be normally maintained by a presser plate 20, Figs. 1 and 2, acted on by springs 26 and adapted to be withdrawn by a sleeve 44, or engagement may be effected centrifugally by weighted arms 64, Fig. 3, pivotally carried by the flange 12 and acting on a presser plate 62 through bell-crank levers 60. In a modification, the pins 32 are situated outside the periphery of the plates 16 and are secured to the shaft 10, the plates 16 being slidably carried by the shaft 24. More than half the surface of each disc is always out of contact with the co-operating plates, whereby cooling is facilitated.
Patent GB-737100-A (GB)
Title: A method and a shuttering device for casting buildings en situ
IPC: E04G11/22
Filed: 1952-10-31
Abstract: 737,100. Shuttering for casting walls. HEIDENSTAM, E. J. VON. Oct. 31, 1952 [April 23, 1952], No. 27384/52. Class 20 (2). A concrete wall is cast by a sliding mould 4a, 4b to storey height and then one or both sides of the mould are raised above the cast wall and moulds 21 inserted below it, around which further concrete is cast for shaping recesses for supporting floors. The moulds 21 are fixed or horizontally slidable on a beam 26 connected by a wire 24 to the mould so that the moulds 21 may be removed automatically by upward movement of the mould or by hand. The moulds 21 are placed in position by workmen on a platform 22 suspended from the mould which is mounted on a yoke 14 adapted to be raised on a rod 17 by a jack 16. For a partition wall the moulds 21 are inserted from both sides and abut in the middle, Fig. 10 (not shown). The moulds 21 may be slidable in vertical slots in the mould, Figs. 11 and 12 (not shown), or may be rotated by the wire 24 to loosen it, Fig. 14 (not shown), or may be left in the concrete, Figs. 15, 16 (not shown).
Patent GB-1465529-A (GB)
Title: Adherent film forming high internal phase ratio emulsions
IPC: A23L35/00
Filed: 1974-02-19
Abstract: 1465529 Thixotropic emulsion PETROLITE CORP 19 Feb 1974 27393/76 Divided out of 1465528 Heading C5C [Also in Division A2] A nutritive formulation comprises a thixotropic emulsion free of thickening agents containing an emulsifying agent, an emulsifiable oil and a non-oil which is an oil-in-non-oil or a non-oil-in-oil emulsion, the internal phase of the emulsion being present in an amount of at least 80 mol per cent of the emulsion, the emulsion containing at least one nutritive acceptable flavouring agent. Preferably water is the non-oil and is the internal phase. The oil may be corn oil or salad oil. Suitable emulsifiers are polyoxyethylene fatty alcohol ethers and esters, ethoxylated sorbitan fatty acid esters and polyol fatty acid esters.
Patent GB-695977-A (GB)
Title: Improvements in fabric measuring machines
IPC: G01B5/04
Filed: 1950-11-09
Abstract: 695,977. Fabric measuring machines. OLIVER, W. T. Feb. 5, 1952. [Nov. 9, 1950] No. 27433/50. Class 42 (ii). In a fabric measuring machine of the kind in which a pressure roller mounted in a movable frame is spring-pressed against a measuring roller mounted in fixed bearings, clearances between side members of the frame 12 and the cheeks 2 of the pressure roller are surrounded by loose sleeves 7 the edges of which enter annular grooves 5, 11 formed respectively in the cheeks 2 and in the frame side members, so as to prevent lapping of the ends of the roller spindle 13 by loose fibres. The arrangement may be used in machines such as described in Specifications 387,358, 396,777, 396,812 and 426,196.
Patent GB-246610-A (GB)
Title: Improvements in, or relating to, apparatus for feeding articles to machines
IPC: B65B35/20
Filed: 1924-11-18
Abstract: 246,610. Rose, W., and Rose Bros. (Gainsborough), Ltd. Nov. 18, 1924. Discharging, throw-off, and feeding devices for endless belt, chain, and rope conveyers and elevators.- In apparatus of the kind in which a succession of articles 3 is carried along a channel between side walls 4, 4a and each is successively delivered through an opening 6 by reciprocating pushers 12. in order to prevent the normal operation of the pushers until the leading article is in the correct position opposite the opening 6, the pushers 12 are pivotally mounted on a reciprocating carriage which is raised above the normal position when the leading article is incorrectly positioned. The carriage runs on a roller 14 on a supporting rail 16 which is carried on an arm 17 of a lever 21 pivoted at 19 and controlled by a cam 24 and spring 23. A second arm 26 on the lever 21 carries a stop piece 27, which determines the position of the supporting rail. A spring pressed bell crank lever 31, 32 is movable by the leading article in the series when in the correct position for delivery so as to interpose a stop 34 between the stop piece 27 and a fixed stop 29 and limit the upward movement of the rail to a position in which the reciprocation of the pushers engages the article. If the leading article is not in the correct end position, the spring 37 withdraws the stop 34 and allows the rail to raise the pushers so that they will pass over the articles in their reciprocating movement.
Patent GB-361043-A (GB)
Title: Improvements in head-lamps for vehicles
IPC: F21V7/04
Filed: 1930-09-15
Abstract: 361,043. Vehicle headlamps. LEGGATT, W., 240, Edgware Road, London. Sept. 15, 1930, No. 27556. [Class 75 (iv).] In a head-lamp having two paraboloid reflecting surfaces with a source of light situated above or below the common axis of the reflector which common axis is located above or below the centre of the lamp casing, the lamp bulb is supported from the front of the lamp. Radial arms c connected to an outer ring member e carry a socket member, in which slides a movable socket carrying the lamp bulb f, the rotation of which is prevented by a pin-andslot device. The bulb is adjusted by a screw j located within an insulating bush k and anchored in a segmental piece l fixed to the framework. Specification 342,652 is referred to.
Patent GB-1156532-A (GB)
Title: Catalyst and Catalytic Process
IPC: C10G49/02
Filed: 1966-06-21
Abstract: 1,156,532. Conversion catalysts. MONSANTO CO. 21 June, 1966 [21 June, 1965], No. 27616/66. Heading B1E. [Also in Divisions C2 and C5] A hydrocarbon conversion catalyst comprises carbon deposited on a porous carrier which has an acidity factor of no more than 2.0., the carbon being produced by carbonisation of an organic compound containing carbon, hydrogen and optionally other non- metallic elements e.g. O, N, S, halides. The organic compound is contacted with the carrier, which may be part of the inner wall of a reactor, at a temperature of 200 to 1400C. The catalyst may contain 0.1% to 30% carbon, and optionally a promoter, and for use in hydrogenation includes 0.1% to 2% noble metal. For use in reforming, isomerizing and bydrocracking, the catalyst as above is mixed with 10% to 90% of a support having an acidity factor of no less than 3.0. Acidity factor is measured by a process comprasing passing a mixture of 92% n-dodecane, 8% n alpha dodecene and hydrogen over the support material at 435 - 440C., and analysing the products by gas chromatography.
Patent GB-813517-A (GB)
Title: Improvements in or relating to methods of producing vitamin a
Filed: 1956-09-11
Abstract: In a process for the preparation of Vitamin A, b -ionone is condensed by the Knoevengeal method, with cyano-acetic acid or an ester thereof, the condensate, after the hydrolysis of any b -ionylidene cyano-acetic acid ester formed, being decarboxylated, the b -ionyl-idene acetonitrile formed being converted by means of a di-alkyl-aluminium hydride into the corresponding aldimine complex which is hydrolysed in an aqueous medium to obtain b -ionylidene acetaldehyde, followed by the condensation of the aldehyde obtained by means of acetone to obtain the "C18-ketone," which ketone is condensed by the Knoevenagel method with cyanoacetic acid or an ester thereof, the condensate, after hydrolysis of any ester formed, being converted by means of a di-alkyl-aluminium hydride into the corresponding aldimine complex which is hydrolysed in an aqueous medium to obtain Vitamin A aldehyde, which aldehyde is reduced to Vitamin A by means of di-alkyl-aluminium hydride, a trialkyl-aluminium compound, a complex metal-hydride containing two different metal atoms or any other reducing agent which reduces the aldehyde group to an alcohol and does not affect the double bonds. Preferably the condensation between the C18 ketone and/or the b -ionone with cyano-acetic acid or ester thereof takes place in the presence of acetamide, ammonium acetate or mixtures thereof with acetic acid, toluene, benzene or mixtures thereof; the reduction of b -ionylidene acetonitrile and/or of Vitamin A acid nitrile or of Vitamin A aldehyde is effected by means of a dialkyl-aluminium hydride or a trialkyl aluminium compound the alkyl groups of which contain 1-6 carbon atoms, under anhydrous conditions, with the exclusion of oxygen, preferably in a nitrogen atmosphere, at a temperature between - 50 DEG  and + 50 DEG  C., and in the presence of an inert solvent, preferably an aliphatic or aromatic hydrocarbon or an aliphatic or alicyclic ether.  The reduction of b -ionylidene acetonitrile or Vitamin A acid nitrile is preferably effected between equimolar quantities of the reactants. An example of the preparation of Vitamin A by the process of the invention is given.  The preparation of the semicarbazone of Vitamin A aldehyde is also described.  Specifications 801,417 and 811,527 are referred to.
Patent GB-1025729-A (GB)
Title: Rock bolt assembly
IPC: E21D21/02
Filed: 1964-10-27
Abstract: 1,025,729. Anchor-bolts; determining tension in rock bolts; washers. C. I. WILLIAMS. Oct. 27, 1964 [Nov. 6, 1963], No. 27799/65. Divided out of 1,025,728. Heading F2H. The description is the same as that of the original Specification but the claims are directed to the rock bolt assembly including the bearing plate and excluding the detector rod.
Patent GB-1153287-A (GB)
Title: Sliding Bearings
Inventor: ORLT RUDOLF
IPC: C23C4/18
Filed: 1966-06-22
Abstract: 1,153,287. Bearings. R. ORLT. 22 June, 1966 [8 July, 1965], No. 27804/66. Heading F2A. A sliding bearing element comprises a backing of steel or iron, a lead-based bearing layer, and a Cu-Zn alloy intermediate layer. The Zn comprises 5-50% and preferably 20-40% by weight of the alloy. The intermediate layer is applied to the backing by electro-plating or spraying. The backing and intermediate layer are then annealed in a reducing or inert atmosphere, or enclosed in a material which releases reducing gases at annealing temperatures. Alternatively, the intermediate layer is applied when molten by a foundry method or is welded on to the backing. The intermediate layer is then covered with a Sn-Pb solder and the bearing metal applied.
Patent GB-402915-A (GB)
Title: Improved arrangement of drawing rollers for use in spinning
IPC: D01H5/22
Filed: 1932-10-06
Abstract: 402,915. Drawing-rollers for use in spinning. LEFEBVRE, H., 262, Rue Jouffroy, Roubaix, Nord, France. Oct. 6, 1932, No. 27847. [A Specification was laid open to inspection under Sect. 91 of the Acts, Oct. 11, 1932.] [Class 120 (ii).] An arrangement of drawing rollers for drawing slivers or rovings of large cross section comprises a group of pairs of fluted top and bottom drawing rollers A<1>-E<1>, A-E so arranged that the ribs on each pair of rollers make contact with the base of the corresponding grooves, the fibres being subjected to a gradually increasing refining and the top rollers exerting a pressure by their own weight or by an additional applied pressure. The top front delivery roller D<1> may alternatively be a smooth leather covered roller. Guides G, g are @so provided.