baber/WOPTO huggingface dataset:
Patent GB-1466253-A (GB)
Title: Control circuits for manifold heaters
IPC: F02N19/04
Filed: 1973-05-11
Abstract: 1466253 Engine starting systems CAV Ltd 12 March 1974 [11 May 1973] 22474/73 Heading H2H A circuit for supplying a manifold heater 22 in a compression ignition engine comprises a switch 14 which when closed completes a circuit to the heater and a circuit to a delay device 18, and a further switch 21 operated by the delay device after a first delay period for completing a circuit to the heater independently of the switch 14, the delay device serving when the switch 14 is opened to maintain the further switch 21 operated for a second delay period after which the circuit to the heater is broken. The circuit is supplied by a battery 11 and when the movable contact of the switch 14 is engaged with a contact 16, the delay device 18 in the form of a heater begins to heat up. At the end of the first delay period, the heater causes both the switch 21 to changeover so that the manifold heater remains energized directly from the battery and a switch 19 to close so that a starter motor 17 is energized. When the engine starts the switch 14 is returned to its central position thus de-energizing the heater 18. At the end of the second delay period the heater 18 has cooled sufficiently to enable the switches 19, 21 to open thereby de-energizing the manifold heater. A contact 15 enables a warm engine to be started without energizing the manifold heater. In a modification, the switch 19 is replaced by a thyristor and the switch 21 controls a transistor which supplies current to the manifold heater.
Patent GB-679589-A (GB)
Title: Anthraquinone dyestuffs
IPC: C09B1/28
Filed: 1950-09-13
Abstract: Dyes of the formula <FORM:0679589/IV (c)/1> where n is an integer up to 5, and X is alkyl or hydroxyalkyl, are obtained from anthraquinones of the formula <FORM:0679589/IV (c)/2> by action of an alkali metal cyanide in an aqueous medium.  The starting materials are prepared by condensation of 1-amino-4-bromanthraquinone-2-sulphonic acid with an amine of the formula NH2.(CH2)n-O-X.  The cyanation may be effected at 65-100 DEG C., and in presence of a buffer salt to maintain the pH at 9.2-10.1. The products dye cellulose derivatives blue shades, such derivatives being the acetate, propionate, butyrate, acetate-propionate, acetate-butyrate, and the ethyl or benzyl ethers.  Also dyed are nylon and polyurethanes.  X may be methyl, ethyl, propyl, isopropyl, hydroxyethyl, hydroxypropyl, or hydroxy-isopropyl.  In examples, 1-amino-2-sulpho-4-bromanthraquinone is condensed with b -methoxy ethylamine to give the 4-b -methoxyethylamino body which is reacted with sodium cyanide to give the 2,3-dicyano body.
Patent GB-1316666-A (GB)
Title: Treatment of refractory particles
IPC: B22C1/18
Filed: 1970-05-11
Abstract: 1316666 Coated refractory particles MITSUBISHI JUKOGYO KK 11 May 1970 [27 May 1969 7 Nov 1969] 22746/70 Heading B2E [Also in Division C3] A method of treating refractory particles to render them free flowing and suitable for use in the manufacture of moulds and cores for casting comprising mixing the refractory particles with an aqueous solution of an alkali metal silicate, in which the molar ratio of silica to alkali metal oxide is in the range 0.7 to 1.1, and a monohydric alcohol to deposit crystalline alkali metal silicate on the surface of the refractory particles. The preferred monohydric alcohol is methanol and the refractory particles may be metal particles or preferably siliceous sand. Optionally an inorganic salt is added to the mixture of aqueous solution of alkali metal silicate and refractory particles to assist deposition of the alkali metal silicate. The inorganic salt may be sodium chloride, potassium chloride, sodium aluminate, manganese sulphate, ammonium ferrous sulphate, potassium nitrate, potassium sulphate, aluminium sulphate, cadmium chloride, cupric chloride, ferrous chloride, chromium chloride, sodium sulphate, ferric chloride, soda lime, barium chloride, sodium bicarbonate, sodium dihydrogen phosphate, sodium nitrate or zinc chloride. The alkali metal silicate may be sodium metasilicate. The aqueous solution of alkali metal silicate may be obtained by using a water glass to which alkali is added to adjust the molar ratio to the desired value.
Patent GB-373015-A (GB)
Title: Method of locally reinforcing the plating of plated metal articles
IPC: B21D53/62
Filed: 1931-08-12
Abstract: 373,015. Table cutlery; spoons. HANSEATEN-BINDERWERK GES., 241, Osterdeich, Bremen, Germany. Aug. 12, 1931, No. 22783. Convention date, Aug. 14, 1930. Drawings to Specification. [Classes 30 and 128.] Spoons and table cutlery are provided during manufacture with recesses at parts subject to wear ; before plating of the whole article, the recesses are filled with the plating metal by electro-deposition the remaining surfaces being protected by a coating of rubber, lacquer, or the like. The filling metal may be built up beyond the normal level so as to be flush after compression. Filling may be done in two stages with compression after each. The filling may be applied to a flat blank or to the shaped article.
Patent GB-696025-A (GB)
Title: Improvements in and relating to duplicated fluid operated power systems
IPC: F15B18/00
Filed: 1949-09-02
Abstract: 696,025. Rotary motors. BOULTON PAUL AIRCRAFT, Ltd., and MILLARD, D. J. Sept. 4, 1950 [Sept. 2, 1949], No. 22808/49. Class 110(ii) [Also in Groups XXIX and XXXIII] A duplicated fluid operated power system comprises a pair of jacks 16, 19 or rotary motors each having its own fluid supply source a by-pass valve 25, which is normally closed, associated with one jack 16 which is normally operative and a by-pass valve 27, which is normally open, associated with the other jack 19 which is normally inoperative, and means are provided for rapidly closing the open valve and subsequently opening the closed valve in the event of failure of the fluid supply to the normally operative jack. The system is used for aircraft controls in which the pilots control column 1 is connected to a floating lever 3 pivoted on a supporting lever 5 which is pivoted about a fixed pin 6. An aircraft control surface 8 is connected at 9 to the floating lever and is also coupled to the jacks 16, 19. The lever 5 is connected through a link 13 and bell cranks 14, 15 to the delivery regulating members of a pair of electrically driven reversible hydraulic pumps 10, 11 which supply the jacks 16, 19 respectively. The by-pass valve 27, Fig. 3, comprises a pair of spring-loaded balls 31 which are normally held open from their seats 33 by plungers 44 to allow communication, through a passage 40, between valve bores 38 which are-connected to opposite ends of the jack cylinder 23. The by-pass valve 25 comprises a pair of balls 31a which are normally closed against their seats by springs. The plungers 44 are connected to a pivoted lever 46 which is retained in one position, against a pair of loading springs, by pressure liquid from the pump 10 and also by a solenoid operated trigger. The latter is tripped when either of switches 76, 77, Fig. 1, are closed by a predetermined pressure drop in pipes 17, 18, whereby the plungers 44 are moved to the right to first close the valves 31 and then open the valves 31a. The change-over may also be effected by stopping the pump 10 in which event a switch may be used to prevent actuation of the solenoid thus avoiding the necessity, of subsequently resetting the trigger. Rotary motors in combination with a gear type differential may be employed in place of the arrangement shown.
Patent GB-726506-A (GB)
Title: Modified polytetrafluoroethylene compositions and products related thereto
IPC: B29C48/04
Filed: 1953-08-19
Abstract: A synthetic resin composition comprises colloidal particles of a tetrafluorethylene or chlortrifluorethylene polymer intimately admixed with an inert solid filler, particularly graphite, coke flour or zircon, the quantity of filler being preferably from 1 to 9 parts by weight per part of polymer, and the minimum sintering temperature of the polymer being within the range of 300 DEG  to 327 DEG  C.  The polymer may be a homopolymer of tetrafluorethylene or chlortrifluorethylene or a mixture thereof, a copolymer of tetrafluorethylene and ethylene or chlortrifluorethylene, or a methanol-tetrafluorethylene telomer.  The composition may be prepared by mixing an aqueous polymer dispersion with finely-divided filler and drying the resulting mixture.  The compositions may be used for the production of pipes, tubes, pipe liners, bushings, seals, reaction vessels, valves, crucibles, electric insulators and decorative articles.  Methanol-tetrafluorethylene telomers may be obtained in colloidal form by polymerizing tetrafluorethylene in aqueous methanol containing a water-soluble polymerization catalyst and an alkali metal or ammonium salt of an acid of the formula H(CF2CF2)3-10COOH as dispersing agent.
Patent GB-168879-A (GB)
Title: Improvements in locks
IPC: E05B67/32
Filed: 1921-08-29
Abstract: 168,879. Keitner, S. Aug. 30, 1920, [Convention date]. Padlocks; portable locks. -A pair of arms 2, 3 pivoted together at 1 are held with one extremity in contact by the insertion between the other ends of a locking-device, which is either separate from or attached to the other parts by links 8, or by a chain. The ends forming the staple preferably have cores 4, 5 of steel, arranged as shown. The locking-mechanism comprises a number of spring sliders 10 adapted to engage behind shoulders 2b, 3<b>, and are released by a flat key 14.
Patent GB-650797-A (GB)
Title: Spark plug construction
IPC: H01T13/39
Filed: 1947-08-18
Abstract: 650,797. Glass. BENDIX AVIATION CORPORATION. Aug. 18. 1947, No. 22861. Convention date, Sept. 12, 1946. [Class 56] [Also in Group XXVII] A connector 19 is rigidly held in the bore of the centre electrode insulator 11 of a sparking-plug (see Group XXVII), by a mixture of lead oxide and lead boro-silicate glass, the composition of the latter being 80.5 parts by weight of silicon dioxide, 12.3 parts of sodium tetraborate, 7.8 parts of boric acid, 2.2 parts of aluminium oxide and '0.6 parts of potassium carbonate. The fusing temperatures employed are of the order of 1400-1800‹ F.
Patent GB-697327-A (GB)
Title: Process for cooling and purifying gas mixtures
IPC: F25J5/00
Filed: 1950-09-18
Abstract: 697,327. Separation of air. GES. FUR LINDE'S EISMASCHINEN AKT.-GES. Sept. 18, 1950 [Nov. 10, 1949; Nov. 10, 1949; March 9, 1950; March 25, 1950], No. 22862/50. Class 8 (ii). Cooling of a gas mixture, e.g., air and removal of readily condensible impurities therefrom, e.g. carbon dioxide and ethylene, prior to separation in a double column 8, Fig. 1, is effected by dividing the air into main currents which are cooled and purified by passage throughout the whole length of alternating heat exchangers or cold accumulators 1..4 traversed also throughout their lengths by reversely flowing cold separated nitrogen and oxygen and into a subsidiary current or currents from which impurities are absorbed. e.g., by passage through alternating silica-gel containers 6a, 6b. The subsidiary current comprises a smali percentage of the mixture entering an inlet 10, and after compression to 15 atmospheres at a compressor 80 is cooled in alternating driers 5a, 5b, which together with the adsorbers 6a, 6b are cooled by an ammonia circuit: the current traverses a liquefier 7 before entering a high pressure column 21. A major portion of the cold main current enters the column 21 and the remainder traverses the liquefier 7 and an expansion turbine 24 before entering the low-pressure column 25. In a modification the subsidiary current branches from part way down the cold accumulators before traversing the adsorbers, and the latter are regenerated by warmed returning nitrogen. In a further modification the adsorbers 13 ... 16, Fig. 5, are embedded in the accumulators and the subsidiary currents leaving by pipes 17, 70, and joined if desired by a portion of the main streams in a pipe 46 are heated in an exchanger 39, compressed at a compressor 40, cooled in exchangers 39, 42, traversed by cold main air, and fed in the liquid state to the column 21; the main current from exchanger 42 being expanded in the turbine 24 and fed to the column 25. In a further modification the subsidiary current branched from the nitrogen regenerators 1, 2, Fig. 6, at pipes 30, 30a, and traversing adsorbers 33, 37, and the compressor 40 heats nitrogen from the column 21 in the exchanger 42, the nitrogen being expanded in the turbine 24 before traversing the regenerators.
Patent GB-442446-A (GB)
Title: Improvements relating to high frequency transmission systems for the transmission ofsignals along high potential lines
IPC: H04B3/54
Filed: 1934-08-07
Abstract: 442,446. Electric signalling systems. SIEMENS - SCHUCKERTWERKE AKT.- GES., Siemensstadt, Berlin. Aug. 7, 1934, Nos. 22899 and 22900. Convention dates, Aug. 21, 1933 and Sept. 8, 1933. [Class 40 (i)] [See also Group XXXIX] In a system for carrier signalling over a power network comprising a number of lines which meet or approach each othei at a point, a common high-fre. quency generator H.F. is provided for all the lines, each of which, however has an individual modulator M1 .. M6. The note frequencies which are different for each line are supplied to the modulators by individual generators or as shown by common apparatus TF. Blocking circuits S are provided in each line to enable signalling to be carried on over the remaining lines in spite of a short circuit on one of the lines of the network. In two-way signalling, the carrier generators at the distant ends of the lines may be synchronized in known manner with that at the junction point.
Patent GB-501205-A (GB)
Title: Improvements relating to water waste preventors
IPC: E03D5/094
Filed: 1937-08-23
Abstract: 501,205. Valve. - discharge water - waste-preventers. BARCLAY, J. A. Aug. 23, 1937, No. 23031. [Class 26] In a valve-discharge water-waste-preventer the valve is raised by a chain &c. A passing over two pulleys C and through a vertical tube F to the outside of the cistern. A counterweight B for the valve is provided within the tube. The valve vent tube E passes through the cover of the cistern.
Patent GB-1210162-A (GB)
Title: Semiconductor devices
IPC: H01L23/29
Filed: 1968-05-15
Abstract: 1,210,162. Semi-conductor devices. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 15 May, 1968 [18 May, 1967], No. 23120/68. Heading H1K. In a semi-conductor device an electrode or lead consists of a layer of titanium sandwiched between upper and lower layers of aluminium carried by a layer of insulation. An electrode structure of this type is formed on a wafer containing a plurality of planar diffused silicon transistors by first forming apertures in the silicon oxide layer 5 (Fig. 3) overlying the base emitter and collector regions using photoresist and etching techniques. The wafer is then heated to 300‹ C. in vacuum and successive layers of aluminium, titanium and aluminium vapour deposited overall from separate sources. Suitable thicknesses for the layers are 1Á, À02Á. and À2Á respectively. Separate contacts 21, 22, 23 are then formed by etching away the unwanted parts through a photo-resist mask. The upper layer of A1 is removed by caustic soda, the titanium by a nitric-hydrofluoric acid mix and the underlying aluminium with a phosphoric-nitric-acetic acid mix. The contacts are then consolidated by heating at 530‹ C. and a protective layer of borosilicate glass deposited by reacting triethyl borate and tetraethylorthosilicate with oxygen in an argon carrier gas. Openings are subsequently formed in this to enable contact to be made to the electrode structure.
Patent GB-461675-A (GB)
Title: Production of solutions of polymeric acrylic acid nitrile
IPC: C08K5/3432
Filed: 1935-08-19
Abstract: Solutions of polyacrylic nitrile suitable for the manufacture of shaped bodies, films, and threads, are prepared by treating the nitrile with a molten quaternary ammonium compound, which may be formed in the presence of the polynitrile by the interaction of an alkyl, aryl or aralkyl halide and an amine.  The solution may contain free amine, and a polypeptide, e.g. casein, hydrated cellulose, and an organic solvent may be added.  The polynitrile may be precipitated by the addition of water or an organic liquid, e.g. alcohol.  In examples: (1) the polynitrile is heated with a mixture of benzyl chloride and pyridine; (2) the polynitrile, casein, and hydrated cellulose in equal quantities are heated with benzyl chloride and pyridine; and (3) the same substances are heated with pyridine and chloracetic ethyl ester.
Patent GB-1105143-A (GB)
Title: Improvements in or relating to processing garbage and/or industrial waste
Inventor: CONRAD EUGEN VON
IPC: B03B9/06
Filed: 1965-06-01
Abstract: 1,105,143. Impact pulverizers; reducing refuse. HAZEMAG HARTZERKLEINERUNGS - UND ZEMENT - MASCHINENBAUG.m.b.H. 1 June, 1965, No. 23271/65. Heading B2A. Apparatus for processing garbage and/or industrial waste comprises an impact pulverizer 1 for coarse comminution of both hard and soft constituents, followed by a coarse intermediate screen 2 followed by a single or double rotor hammer mill 3. A magnetic separator may be provided before and a further screen 4 after the hammer mill. Fine material from the screen 2 is conveyed to a point F and coarse material further reduced in the mill 3. Fine material from the screen 4 is conveyed to the point F and coarser material recycled at G to the mill 3 for further reduction.
Patent GB-408137-A (GB)
Title: Improvements in and relating to gas meters
IPC: G01F3/22
Filed: 1933-08-21
Abstract: 408,137. Gas meters. NAAMLOOZE VENNOOTSCHAP MACHINERIEEN - EN APPARATEN FABRIEKEN, 30, Croeselaan, Utrecht, Holland. Aug. 21, 1933, No. 23298. Convention date, Oct. 10, 1932. [Class 54.] In a gas meter of the single bellows type the casings 13 of double-seated inlet and outlet valves 20 are secured in sheet metal plates 4 which are soldered to the circular meter casing 1 so as to form segmental chambers 5 communicating through openings 16 in the meter casing with caps 17 carrying the inlet and outlet pipe connections 2. The diaphragm 12 is secured to a sheet metal ring 9 having a flange 10 fitting to the meter casing. The flange 10 is cut away opposite the chambers 5 and is soldered to the upturned edges 7 of the plates 4. Where the openings 16 are formed the metal of the casing is bent to form two tongues which arc soldered to the casing 13 and plate 4 to prevent gas passing into and out of the measuring chambers except through a lateral opening 15 in the casing 13.
Patent GB-183739-A (GB)
Title: Improvements in and connected with axle box guides for railway waggons and like vehicles
IPC: B61F5/32
Filed: 1921-09-02
Abstract: 183,739. Adams, C. E. Sept. 2, 1921. Axle - bearing guiding - arrangements. - In a construction of axle-box guide in which a guide-bar can be displaced to permit removal of the axle, the upper end of the stay bar is detachably connected to the vehicle body and its lower end is pivoted to the guide-bar. The guidebar a<2> is bolted at c, c' to the sole-bar b and carries a bolt or rivet a<4> at its lower end by which a stay-bar a<3> is pivoted. the other end of the stay-bar being bolted to the sole-bar or secured by the bolt f<1> that secures the spring f. When removing the axle, the stay-bar a<3> and guide a<2> are displaced as shown in dotted lines.
Patent GB-1129535-A (GB)
Title: Treatment of steel before enamelling
Inventor: COOKE FREDERICK
IPC: C23C8/80
Filed: 1966-05-25
Abstract: 1,129,535. Sulphurising steel. RICHARD THOMAS & BALDWINS Ltd. Aug. 16, 1967 [May 25, 1966], No.23421/66. Heading C7U. Prior to coating steel strip or sheet with a one coat enamel, the steel surface is decarburised then sulphurised and finally pickled. Decarburisation is carried out by heating in a hydrogen atmosphere so that the total carbon content does not exceed 0.006% and sulphurisation is carried out by adding H 2  S to the hydrogen towards the end of the decarburisation cycle. Pickling is carried out in a 9% w/v solution of H 2 SO 4 . Prior to pickling, the steel surface may be broken up by light abrasion.
Patent GB-483628-A (GB)
Title: Improvements in and relating to miners' picks
IPC: B25D7/00
Filed: 1937-08-26
Abstract: 483,628. Handles. SPARKS, J. G., and BRANHAM, M. Aug. 26, 1937, No. 23435. [Class 61 (i)] A miner's pick 5 has an integral socket 7 not substantially shorter than the length of the picking arm or arms, the inner and outer surfaces of the socket tapering away from the head and the outer to a greater degree than the inner so that the socket is of diminishing wall thickness ; the taper end 9 of the handle 12 is of the same length as the socket.
Patent GB-258884-A (GB)
Title: Ink-feed device for printing machines
IPC: B41F31/02
Filed: 1926-09-23
Abstract: 258,884. Schl÷tter, M. Sept. 24, 1925, [Convention date]. Inking - apparatus.- Apparatus for feeding ink to printing- machines is provided with a pump consisting of meshing toothed wheels for causing the ink to flow evenly from a supply passage to a chamber furnished with a cylindrical cock for regulating the feed. In the apparatus shown in Figs. 1 and 2 the toothed wheels 4 are arranged between chambers 3, 5, the chamber 3 being supplied with ink from a passage 2, and the chamber 5 being furnished with a cylindrical cock 6 for regulating the flow of ink to an inking- roller 1. When the cock is closed the ink returns from the chamber 5 to the chamber 3 through passages 22, 25 and a spring valve 24; in modification, the valve opens into a lead-off pipe. The cock is adjusted by turning a hand-wheel 26 connected by worm gears 10, 11 to a threaded shaft 9 carrying a nut 14 which engages a pin 15 on the cock. The cock is formed with an inlet 7 and outlet 8 consisting of slots extending across the cock. To permit free regulation, the outlet slot may be replaced by a line of triangular holes. The cock is shut to stop the feed by turning an eccentric 21 engaging a. sliding frame 18 supporting the shaft 9. The worm 10 is feathered on the shaft. For use with machines printing a number of columns, one of the above-described apparatus is provided for each column, the casings 30 of the apparatus being as shown in Fig. 2 secured side by side. The lower toothed wheels 4 are formed with inter-engaging recesses and projections 31, 32 and are driven by a shaft 29. The eccentrics 21 are secured to a common shaft 20. To permit independent adjustment of the cocks, the worms 11 are secured to telescopic spindles 12 - - 12<3> provided with separate handwheels 26. For multi-colour work the passages 2 are separated and are supplied with inks of different colours.