baber/WOPTO huggingface dataset:
Patent GB-453853-A (GB)
Title: The manufacture of vat dyestuffs containing nitrogen
IPC: C09B1/48
Filed: 1935-03-18
Abstract: Vat dyes are prepared by condensation of products of the general formula <FORM:0453853/IV/1> wherein one or more of the radicles signified by X are amino groups, with halogen compounds containing at least one replaceable halogen atom, particularly those of the anthraquinone series.  The products are similar to those described in Specification 410,552 and likewise may be after-treated with caustic alkalies or acid condensing agents.  The aminated starting materials are prepared by nitration and reduction.  In examples: (1) a monamino compound of the above formula derived by nitration and reduction is condensed with 1- and 2-chloranthraquinones, dibromdibenzanthrone (prepared by brominating dibenzanthrone), and dibromanthanthrone (see Specification 260,998, [Class 2 (iii)], examples 3 and 4); (2) a diamine compound of the foregoing formula also prepared by nitration and reduction is condensed with 1-chloro-4-benzoyl-aminoanthraquinone and monobromanthanthrone (see Specification 287,020, [Class 2 (iii)]); (3) a diamino compound prepared by condensing 1-chloranthrone with glyoxal, fusing with alcoholic potash, then with aluminium chloride, condensing with p-toluenesulphonamide and saponifying, is condensed with Bzlbrombenzanthrone; alkali-fusion of the product gives a darkbrown vat dye. Specifications 369,765 and 441,049 also are referred to.
Patent GB-541096-A (GB)
Title: Improvements in or relating to electric condensers
IPC: H01G4/224
Filed: 1940-05-10
Abstract: 541,096. Condensers. STANDARD TELEPHONES & CABLES, Ltd., and LENO, J. A. May 10, 1940, No. 8474. [Class 37] A cylindrical condenser body E with wire leads F is enclosed in a compound-filled metal tube A by porcelain discs C resting on inturned ridges B. The central hole for the passage of the lead F is counter-sunk, and the outer edges chamfered and both are silvered so that the lead F and rim of the casing may be soldered as at G, D to provide hermetic sealing.
Patent GB-896447-A (GB)
Title: Pumps of the axial-flow type suitable for the jet propulsion of waterborne or submarine vessels
Inventor: WALKER ALLEN CHIVERS
IPC: B63H11/00
Filed: 1960-03-10
Abstract: 896,447. Axial-flow pumps. DOWTY MARINE Ltd. March 8, 1961 [March 10, 1960], No. 8524/60. Class 110 (1). In an axial-flow pump the rotor blades or stator blades, or both, have a cross-sectional shape substantially based upon the N.A.C.A. 16 series aerofoil cross-sections (described in Technical Note No. 1546 of the United States National Advisory Committee for Aeronautics). This blade shape reduces cavitation. An axialflow pump for providing a propulsive water jet for a water-borne vessel or submarine vessel comprises two rows of rotor blades, each followed by a row of stator blades. Both rows of rotor blades and the first row of stator blades comprise blades shaped in accordance with any of the N.A.C.A. 16 series aerofoil cross-sections.
Patent GB-560600-A (GB)
Title: Improvement in process of making magnesium oxide
IPC: C01F5/06
Filed: 1942-06-23
Abstract: 560,600. Magnesium oxide. AMERICAN ZINC, LEAD, & SMELTING CO. June 23, 1942, No. 8609. Convention date, Nov. 21, 1941. Drawings to Specification. [Class 1 (iii)] Dolomite is calcined to convert the magnesium content to oxide, the calcine is suspended in - water and carbonated with carbon dioxide evolved in the cycle, the magnesium bicarbonate in solution is filtered off from the calcium carbonate and agitated under reduced pressure to precipitate ;magnesium carbonate, and this is ,dried and lightly calcined, the carbon dioxide being recycled. The filtrate may be used for suspending the dolomite calcine, or it may be treated with dolomite calcine to combine with its carbon dioxide content and the resulting slurry returned for calcination.
Patent GB-110762-A (GB)
Title: Improvements in Explosion Engines.
Inventor: MEYER RICHARD ERNST
IPC: F01L7/04
Filed: 1916-06-20
Abstract: 110,762. Meyer, R. E. June 20, 1916. Valves; valve-gear.-In engines with cylinders en bloc and having rotary sleeve valves working between the pistons and cylinders, each valve 200 is formed separate from its driving-gear 12, Fig. 1, and connected to it by a tongue and socket connexion 19, 20, which has a fixed relation to the ports of the valve. The valves are driven from the crank-shaft 2 by chain-gearing 17, 18 and worm-gearing 12, 15. Each valve is divided longitudinally by sinuous, irregular, or notched portions 21, Fig. 6, and in a four-cylinder engine two of the valves are rotated oppositely to the other two. Each cylinder head 23 has a cylindrical portion 24 which fits into the upper end of the valve 200 and has a central dome-shaped explosion chamber 25 provided with oppositely disposed inlet and exhaust ports 26. The induction pipe passee between the two middle cylinders to branches leading to the inlet ports 26.
Patent GB-1461510-A (GB)
Title: Mechanical pencil
IPC: B43K21/22
Filed: 1974-02-26
Abstract: 1461510 Pencils SAKURA COLOR PRODUCTS CORP 26 Feb 1974 8720/74 Heading B6P A pencil of the type having an expandable chuck 14 to grip the lead 21 further includes a protecting tube 20, 22 located within a sleeve 18. If the chuck moves downwards by only a predetermined amount the lead is fed conventionally. If the chuck is moved further than this amount then it engages groove 25 in the sleeve by means of projections 24 on each jaw of the chuck. When the chuck is withdrawn upwards from the position shown in Fig. 3 the tube 20, 22 and lead 21 are retracted. A user of the pencil can distinguish between lead projection/retraction because the pencil has two springs of different strengths urging the chuck 14 upwards, it being necessary to exert greater pressure to retract the lead than to project it.
Patent GB-1501760-A (GB)
Title: Selective electrical connection device
IPC: H01R13/703
Filed: 1975-03-03
Abstract: 1501760 Two-part couplings SOC D'EXPLOITATION DES PROCEDES MARECHAL SEPM 3 March 1975 [14 March 1974] 8800/75 Heading H2E A plug 22 and socket 21 of a kind similar to that shown in Specification 1,429,574, has on a common circle at least three angularly spaced contacts of which all bar one are equiangularly spaced, an insulating safety disc 23 provided with openings for the plug's contacts and a second insulating disc 30 provided with openings in the same number and location as the socket's contacts, both of the discs being rotatable. The socket contacts may be connected up in such a way that different voltages and a mono or multi-phase supply is available according to the combination of socket contacts entered by the pin contacts. The "correct" set of holes for a particular plug is ensured by the second insulating disc. To allow for any combination of pins, the first insulating disc 23 may have a large number of holes including an arcuate slot (Fig. 3, not shown). The discs are rotatable so that the socket contacts can be covered when not in use. Disc 23 is held in place initially by means 26a, 26b on a sprung washer 27 and cannot be moved until the front 20 of the plug 22 depresses washer 27. The body of plug 22 is linked to the socket body by a bayonet action and at the same time the discs are rotated by the pins to an alignment where the socket contacts are accessible. The socket has a hinged cap 11 which may be secured by a latch 13 and the insulating block 4 carrying the socket contacts is adjustably secured in the casing 16 by means of grooves (19, Fig. 2, not shown).
Patent GB-581324-A (GB)
Title: Improvements in relaxation circuits for producing electrical impulses at regular recurrence frequencies
IPC: H03K3/16
Filed: 1942-06-26
Abstract: 581,324. Valve generating circuits. DODDS, J. M., SCOLES, G. J., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. June 26, 1942, No. 8856. [Class 40 (v)] An impulse generator comprises a relaxation oscillator with the addition of a rectifier effectively in series with an inductance which resonates with a condenser at one-half of the required recurrence frequency. In this way accurate timing of the impulses is obtained since the rectifier prevents current reversal and produces a rapid potential change. Fig. 5 shows a blocking oscillator V timed by the combination RC in which a diode D and an inductance LR are connected in the anode lead. Alternatively they may be connected in the cathode lead, Fig. 3 (not shown) in which case the additional condenser CR is connected between the diode anode and earth and the grid inductance is connected to earth through the inductance LR. In a modification, Fig. 7 (not shown) the inductance is connected in the positive lead and the diode in the negative lead. Fig. 9 shows a grid controlled discharge tube oscillator Vr with the added diode D and inductance LR in the cathode lead and an optional anode inductance LP<1>. Specification 578,510 is referred to.
Patent GB-287570-A (GB)
Title: Improvements in or relating to loud speakers
IPC: H04R7/04
Filed: 1928-03-23
Abstract: 287,570. Etablissements E. Belin. March 24, 1927, [Convention date]. Loud-speakers; diaphragms; magnetic instruments.-A hornless loud-speaker is provided with a carbon diaphragm. The actuating means may either be a moving coil or as shown a small plate 6 of soft iron secured to the diaphragm by glue, resin or cement or by means of a small screw and nut, the plate co-operating with an electromagnet 7. In the latter case, regulation of sensitivity and volume may be obtained (1) by moving the electromagnet towards or away from the diaphragm by means of a micrometer screw 9 (2) by means of a regulatawe shunt across the windings of the electromagnet or (3) by varying the number of turns of the winding 8 in circuit. The diaphragm is maintained at a suitable tension between a circular main support 2 and a U- sectioned ring piece 3 by means of an annular washer or washers 4 of paper, pasteboard &c. and screws 5. Circular or annular interchangeable accessory pieces may be carried either by the main support or ring piece, the pieces serving to diminish the useful diameter of the vibrating surface by coming into contact with the diaphragm and thus creating nodal lines thereon.
Patent GB-250012-A (GB)
Title: An elevator or hoist for building and other purposes
IPC: B66B9/16
Filed: 1925-04-03
Abstract: 250,012. Morgan, F. J. April 3, 1925. Winch-actuated hoists with guided platforms. -A. hoist for raising building material in bulk or in barrows with a labourer in attendance comprises a superstructure mounted on a wheeled base and composed of opposite and vertically disposed side frames, a load carrying platform vertically slidable between the side frames, and winding mechanism for cables attached to the platform disposed in the base. The side-frames 3 are composed of interchangeable sections 20 of L-section each of which is bolted at its upper end to the guide rail 5 and at its lower end to the section immediately below. The lowest sections are bolted to the side frame members 22 of the base 1, and the top sections are connected by a bridge piece 4. Each guide rail 5 is composed of two L- irons spaced apart by distance pieces 6 and bolted together to form a T-shaped member. The load carrying platform 8 is secured to, or pivoted in, a frame having hinged flaps 9 and side members 7 supporting grooved rollers which run on the vertical edges of the guide rails. Cables 11 attached to the members 7 are passed over pulleys 10 and below pulleys 12 and anchored in deeply grooved pulleys 13, a separate pulley being provided for each cable so that each cable winds spirally on itself in a vertical plane. The pulleys 13 are mounted on a shaft 14 which is driven through worm gearing 16, 17 by a shaft 18. An eyed lug 23 on each section of guide rail receives one end 24 of a rod 25, the other end of which is cranked or bent to lie against a horizontal scaffold pole 27 and is lashed thereto. A number of hoists may be mounted on a single wheel base. Safety devices may be provided to lock the platform to the guides when a hoisting cable breaks.
Patent GB-699833-A (GB)
Title: Improvements in or relating to collar studs
IPC: A44B3/02
Filed: 1951-04-18
Abstract: 699,833. Collar studs. BOXBERG, L. G. W. April 18, 1952 [April 18, 1951], No. 9038/51. Class 43. A collar stud comprises a flattened head 1 and a flattened neck 9 disposed in planes at right-angles to one another, the head being also in a plane perpendicular to the plane of the base 3 and projecting from the neck asymmetrically in its own plane. Preferably the head is triangular, with an acute angle at its apex 4 and a substantially straight lower edge 5 parallel with the base of the stud. Preferably also the width of the neck is tapered upwardly from the base, and the base is so disposed relative to the neck that it projects therefrom asymmetrically in the direction of the asymmetry of the head relative to the neck; also the neck may be inclined from the perpendicular with respect to the base in the direction stated. The stud may be made of metal or moulded plastic material. Specification 618,413 is referred to.
Patent GB-1180497-A (GB)
Title: Catalytic Desulfurization of Petroleum
Inventor: HATANO KENSUKE
IPC: C10G31/08
Filed: 1968-02-26
Abstract: 1,180,497. Catalytic desulphurization. K. HATANO. 26 Feb., 1968 [22 May, 1967], No. 9107/68. Heading C5E. The amount of sulphur compounds in petroleum or petroleum distillates is reduced by bringing the vaporized feedstock into contact with a ferric sulphate-aluminium silicate catalyst in the presence of moisture at a temperature below 480‹ C.
Patent GB-377724-A (GB)
Title: Improvements in or relating to sanding sealers
IPC: C09D101/18
Filed: 1931-03-25
Abstract: A coating-composition for use as a sanding sealer on rough surfaces such as wood, which may be applied as a first coat after the stain and filler, comprises a cellulose derivative, a sanding promoter, and an alkyd resin modified with rosin acid and a saturated fatty acid with more than eight carbon atoms in the molecule, with or without dyes, pigments, and flatting agents. Cellulose derivatives specified are the nitrate, and the acetate used in the presence of small quantities of nitrate.  Sanding promoters specified are metal stearates (zinc, calcium, aluminium) and waxes such as carnauba wax. Resin ingredients specified are glycerol, phthalic anhydride, stearic acid, rosin acid, palmitic acid, lauric acid; proportions specified are 20-65 per cent of an ester such as glycerol phthalate, 5-40 per cent of an ester such as glycerol stearate, and 10-60 per cent of an ester such as glycerol rosinate.  Flatting agents specified are aluminium stearate, hydrated alumina, silex.  In an example, the composition consists of low viscosity nitrocellulose, a modified resin as set out above, zinc stearate, ethyl alcohol, butyl acetate, butyl alcohol, ethyl acetate, xylene, and toluene.ALSO:An alkyd resin for use with cellulose derivatives in coating compositions is modified by combination with rosin acid and with a saturated fatty acid having more than eight carbon atoms in the molecule. Ingredients specified in the examples are glycerol, phthalic anhydride, stearic acid, rosin acid, palmitic acid, lauric acid; proportions specified are 20-65 per cent of an ester such as glyceryl phthalate, 5-40 per cent of an ester such as glyceryl stearate, and 10-60 per cent of an ester such as glyceryl rosinate.ALSO:A composition for use as a sanding seater on rough surfaces comprises a cellulose derivative, a sanding promoter, and an alkyd resin modified with rosin acid and a saturated fatty acid having more than eight carbon atoms in the molecule, with or without dyes, pigments, and flatting agents.  Cellulose derivatives specified are the nitrate, and the acetate used in the presence of small quantities of nitrate. Sanding promoters specified are metal stearates (zinc, calcium, aluminium) and waxes such as carnauba wax.  Resin ingredients specified are glycerol, phthalic anhydride, stearic acid, rosin acid, palmitic acid, lauric acid; proportions specified are 20-65 per cent of an ester such as glyceryl phthalate, 5-40 per cent of an ester such as glyceryl stearate, and 10-60 per cent of an ester such as glyceryl rosinate.  Flatting agents specified are aluminium stearate, hydrated alumina, silex.
Patent GB-753549-A (GB)
Title: Improvements in or relating to accelerometers
Inventor: VEEN LOUIS ALFRED GEORGE TER
IPC: G01P15/11
Filed: 1954-03-29
Abstract: 753,549. Accelerometers. BENDIX AVIATION CORPORATION. March 29, 1954, No. 9152/54. Class 40(1) An accelerometer comprises a casing containing a mass supported for linear movement between its ends, a pick-up means responsive to the distance of the mass therefrom dispersed at one end of the casing and a stop means at the opposite end to restrict the amount of linear movement in either direction. A pair of resilient spiders 31, 30 clamped at their peripheries between parts 11, 12 and 12, 13 respectively of the cylindrical casing and at their centres between nut 33 and the mass 28, and between the latter and the disc 21 of magnetic material respectively allow axial motion of mass and disc relative to pole pieces 20 of a pot magnet 19 carried by plug 17 which is screwed into casing part 13. Variation of the gap, between disc 21 and poles 20 alters the inductance of coil 18. Apertured disc 35 screwed into casing part 11 and provided with a lock nut 37 co-operates with nuts 33 and 40 to restrict motion of the mass in either axial direction. The limit of movement away from the poles is set by adjustment of disc 35 and the limit towards the poles by movement of the tight nut 40 with disc 35 locked. The oil-filled casing is completed by a resilient diaphragm 38 and a sealing ring 25.
Patent GB-590120-A (GB)
Title: Improvements in or relating to hose couplings
IPC: F16L33/22
Filed: 1945-04-12
Abstract: 590,120. Hose couplings. BEAZLEY, T. A., and BRITISH TYRE & RUBBER CO., Ltd. April 12, 1945, No. 9191. [Class 99 (i)] A hose coupling has an insert 11 with annular ribs 13, 14, and 15 inserted in the hose 12 until the said hose abuts the shoulder 31 and a tapered ferrule 17 forced on to the outside of the hose, to compress it on the insert, by the nut 20 engaged on the threaded end 16 of the insert. The threaded portion 16, as shown, also accommodates a nipple 22 and a union nut 21 but it may be modified to take any other type of joint. A rib 25 may be formed on the ferrule for additional strength or an. extension 26 may be added to prevent kinking when the hose is bent sharply.
Patent GB-1487995-A (GB)
Title: Filter papers
IPC: B01D39/16
Filed: 1974-11-21
Abstract: 1487995 Filter media TULLIS RUSSELL & CO Ltd 21 Nov 1974 [26 Aug 1973 (2)] 9216/73 and 18742/74 Heading B1D [Also in Division D1] Filter elements may be formed from a sheet material made by a papermaking method from a synthetic fibrous material which is stable at at least 180‹C and a fibrous binder selected from wood pulp, other cellulosic pulp, sodium hydroxycellulose fibre, and polyvinyl alcohol fibres, and subsequently impregnated with a resin which is also stable at at least 180‹C and which is capable of acting as a binder for the synthetic fibrous material in the event of the fibrous binder degrading or burning off in use. The synthetic fibrous material may be made of crystalline poly (2, 6-diphenyl-pphenylene oxide) or a polyamide-imide. The resin impregnant may be a modified phenolic, epoxy, polyimide, epoxy-phenolic, acrylic, or silicone resin. After impregnation, the resin imparts to the sheet the mechanical properties necessary to enable the material to be fluted and formed into an appropriate filter element shape. The filter element may be used for filtering fuels e.g. aviation kerosene and lubricating oils.
Patent GB-1218210-A (GB)
Title: Machine load indicator with adjustment for speed
Inventor: WINTRISS GEORGE
IPC: G01L5/00
Filed: 1968-02-27
Abstract: 1,218,210. Mechanical presses. INDUSTRIONICS CONTROLS Inc. 27 Feb., 1968, No. 9311/68. Heading B5F. [Also in Divisions F2, G1, G2-G3 and G4] The load in the framework of a variable-speed repetitive-action press is indicated by lamps 28 controlled by respective pressure-sensitive switches 121-127 which respond to the pressure in a passage 48, this pressure being controlled by a valve member 52 which in turn is controlled by a rod 30 which moves axially in response to the said load. The passage is supplied through series regulators 72, 114 (see Division F2) and the member 52 controls the escape of fluid. Calibration is effected by varying the effective volume of passage 48 by means of a piston (154) movable in a cylinder communicating with passage 48. A connector (178) indicates the position of the piston. The movements of rod 30 are transmitted to the valve member 52 by magnet 58 and a telescopic temperature compensating device 56 having a spring-biased piston 62 working in a viscous liquid medium. The switches each comprise a diaphragmmounted movable contact (102<SP>1</SP>) adjustably loaded through spring (100<SP>1</SP>) by ball (98<SP>1</SP>).
Patent GB-1381402-A (GB)
Title: Optical notch filter
IPC: G02B5/30
Filed: 1972-02-29
Abstract: 1381402 Liquid crystal compositions XEROX CORP 29 Feb 1972 [5 March 1971] 9319/72 Heading C4X [Also in Divisions G2 and H4] An optical filter (see Division G2) comprises fibres of liquid crystalline material. The following compositions are used in examples :-I 50% cholesteryl iodide (CI) and 50 cholesteryl chloride (CC); 10% CC and 90% cholesteryl bromide (CB); II 25% CC and 75% cholesteryl nonanoate (CN); III 80% CC and 20% cholesteryl oleyl carbonate (COC); IV 20% CC and 80% CB; V 20% anisylidene-p-n-butylaniline and 80% COC; VI 57% cholesteryl formate (CF) and 43% CN; VII 20% cholesterol (C) and 80% COC; VIII 10% C and 90% of a mixture of equal parts of cholesteryl-2-(2-ethoxy)ethyl carbonate and COC; IX 20% cholesteryl-2-(2-butoxyethoxy)ethyl carbonate and 80% CC; X 84% CC and 16% of a mixture of equal parts of cholesteryl propionate and cholesteryl decanoate; XI 74% CC and 26% cholesteryl acetate; XII 80% CC and 20% cholesteryl butyrate; XIII 90% CC and 10% cholesteryl laurate; XIV 68% cholesteryl-2-(2-ethoxyethoxy)ethyl carbonate and 32% cholesteryl-n-propyl carbonate; XV 10% C and 90% CC; XVI 68% CC and 32% cholesteryl valerate; XVII 79% CC and 21% cholesteryl stearate. The percentages are by weight.
Patent GB-892344-A (GB)
Title: Ion source
Inventor: GABOR DENNIS
IPC: H01J27/18
Filed: 1959-03-18
Abstract: 892,344. Mercury switches. NATIONAL RESEARCH DEVELOPMENT CORPORATION. March 17, 1960 [March 18, 1959], No. 9430/59. Class 38 (5). [Also in Group XL (a)] A mercury switch for starting the electrical supplies of a thermo-nuclear reactor (see Group XL (a)) is operated by the passage of a gas bubble through a mercury column 19, the gas bubble providing a dose of gas for the ion source 10 of the reactor. The gas bubble injected, e.g. by a syringe, at the bottom of the mercury column breaks contact between the tubes 21 and 23 as it rises past the insulator 22 and an electrical signal is fed through the lead 24 to the supplies.
Patent GB-1415063-A (GB)
Title: Lever operated switch
IPC: H01H23/20
Filed: 1973-02-27
Abstract: 1415063 Snap-action switches; switch covers; switch handles ARROW-HART Inc 27 Feb 1973 [29 Feb 1972] 9485/73 Heading H1N In an electric switch, an operating lever 40 drives through a snap action coiled compression spring 24 a swingable yoke 21 driving movable contacts 15, spring 24 biasing lever 40 lengthwise to hold it against a pivot seat (in neck 35), lever 40 being lengthwise movable against the bias, means 44 (projections) on lever 40 limiting its anti-bias lengthwise movement. Contacts 15 are mounted on insulating plates 15<SP>1</SP> shoulders 22 on yoke 21. Projections 19, 16a, 16b on terminal plates 16, 16<SP>1</SP> engage recesses in the casing to prevent rotation of plates 16, 16<SP>1</SP> when the terminal screws are tightened to clamp wires. A cover 30 carrying neck 35 fits over the top of the casing, the side walls 32 of cover 30 being a snap fit over projections 17 on the sides of the casing. An insulating flexible shield to cover the terminals fits over the underside of the casing with tongues 54 in its end walls carrying projections 55 which snap into recesses 56 in the casing.