baber/WOPTO huggingface dataset:
Patent GB-1462050-A (GB)
Title: Precipitation of metal-containing compounds
IPC: B01J13/00
Filed: 1974-04-24
Abstract: 1462050 Precipitating metal compounds UNITED KINGDOM ATOMIC ENERGY AUTHORITY 13 May 1975 [24 April 1974] 18011/74 Heading C1A Water soluble metal compounds are precipitated from aqueous solutions of their salts by mixing the solution with a water soluble compatible polymer having a plurality of carbonamide groups, and which is capable of forming a complex with the metal ions without bringing about their precipitation, the viscous mixture formed is then treated with a precipitating reagent to precipitate the metal compound from solution. Metal salts exemplified are those of Cu(II), Ni(II), Fe(II), Cr(III), Co(II), Pt(IV), Ag(I), Zn(II), Hg(II), Sn(IV) and Mn(II) all of which except Pt(IV) are precipitated by addition of caustic soda in slight excess to form hydrous oxides or hydroxides bound with the polyacrylamide. Pt(IV) is precipitated as (NH 4 ) 2 PtCl 6  by treatment of a chloroplatinate solution with ammonium chloride in the presence of polyacrylamide. Metals suitable for the process are those which are readily capable of forming cationic complexes with ammonia.
Patent GB-1363724-A (GB)
Title: Colouration machine
IPC: D06B11/00
Filed: 1972-05-10
Abstract: 1363724 Polychromatic dyeing apparatus C NEWTON 10 May 1972 [28 May 1971] 18076/ 71 Heading D1L Polychromatic dyeing apparatus of the type in which a plurality of dye solutions are fed e.g. down an inclined plane 16 onto the surface of a web 11 from one or more dye-nozzle containing carriages 15 reciprocating transversely of the web and the treated web is passed to wind-up via a padding mangle 12 is characterised in that the or each reciprocating carriage 15 is formed from a plurality of manifolds 22 running the length of the carriage each manifold being connected by a single flexible tube 23 to a dye source (not shown) and having a plurality of dye-applying jets 18 distributed in a predetermined arrangement along its length. In a preferred embodiment (Fig. 6) the carriage comprises four tubes 36 comprising the manifolds clamped together by brackets 37, each tube being individually connected to a dye source and having one or more lead tubes 38 with dye-applying jets 39 formed along its length. Two of these carriages may be mounted back-to-back for reciprocation above the inclined plane or web passing therebeneath (Fig. 7, not shown). Transverse reciprocation of the carriage may be achieved by a rotating disc and eccentric pin mechanism (Fig. 4, not shown) or by providing each end of each tube 36 with a piston arrangement (Fig. 8, not shown). The apparatus reduces considerably the number of flexible tubes used to connect the individual dye sources with their dye applying jets. Reference has been directed by the comptroller to Specification 1288681.
Patent GB-121188-A (GB)
Title: Improvements relating to Wood Separators for Secondary Electric Batteries.
IPC: H01M2/16
Filed: 1917-12-06
Abstract: 121,188. Chloride Electrical Storage Co., and Heap, B. Dec. 6, 1917. Separators.-Wood separators are treated in a weak alkaline solution, washed in water, and dried in a steam or other heated vacuum chamber. The alkaline solution may consist of a solution of caustic soda of specific gravity 1.05, the period of immersion being twenty-four hours or less if the solution is heated and used under pressure. The separators are made of American cypress or other wood of the same genus, such as California red wood.
Patent GB-225793-A (GB)
Title: Improvements in bottle topping means
IPC: B67B3/20
Filed: 1924-07-30
Abstract: 225,793. Marks, E. C. R., (Horlick's Malted Milk Co.). July 30, 1924. Labelling.-In a machine for pressing adhesive labels or sealing-discs of paper &c. on to the mouths of bottles, the pressure is applied to the discs 65 by ahead which is divided into sections 64 carried by a series of levers 55 adapted to be operated to withdraw the sections of the presser over and in rubbing contact with the seals before the presser is withdrawn from the bottle. The levers are mounted on a cam-operated plunger 58 and are operated against the action of springs 57 to withdraw the sections 64 from the seal by means of an annular cam 68 adapted to be moved vertically to engage the tails of the levers.
Patent GB-573873-A (GB)
Title: Process for the catalytic conversion of hydrocarbons
IPC: C10G11/18
Filed: 1942-12-22
Abstract: 573,873. Conversion of hydrocarbons. UNIVERSAL OIL PRODUCTS CO. Dec. 22, 1942, No. 18204. Convention date, Nov. 29, 1941. [Classes 1 (i) and 32] In the catalytic conversion of hydrocarbons wherein a fluidized dense mass of catalyst particles is contacted alternately with a fluid reactant in a converter 15 and with a regenerating medium in a regenerator 38, and wherein the bulk of the catalyst settles below a definite level 16, 46 in each vessel while gas containing only a small proportion of suspended catalyst is withdrawn from the upper parts of the vessels, at least one of the gaseous effluents is scrubbed with a portion of liquid hydrocarbon reactant to remove suspended catalyst and the used scrubbing liquid is fed to the conversion zone. The reaction products for example are passed to fractionating column 22 from the bottom of which the heavy fraction containing the residual catalyst is returned by line 6 to the main stream of reactant. The gaseous products of regeneration are treated in scrubber 55 with a portion of reactant which is then returned by line 7 to the main stream. In both converter and regenerator the vapourcatalyst mixture enters at the bottom and flows upwardly. Dense phase catalyst is withdrawn through central standpipes 31, 47 in which it may be maintained fluid by gas admitted at 32, 48 and from which it is distributed into the currents of regeneration gas and reactant vapour respectively. Specification 552,880 is referred to.
Patent GB-575137-A (GB)
Title: Improvements in plasticized natural or synthetic rubber-like compositions
IPC: C08K5/101
Filed: 1943-11-03
Abstract: Natural and synthetic rubbers are plasticised by the addition of b -alkoxy or b -aryloxy propionic acid esters having the structural formula RO-CH2-CH2-COOR1, where R and R1 are the same or different groups.  Numerous esters are mentioned of which butyl b -cyclo hexoxy propionate n-hexyl b -phenoxy propionate and butyl b -phenoxy propionate are typical. These esters may be prepared by reaction of the corresponding nitrile and alcohol in the presence of sulphuric acid at 110-120 DEG  C., the desired nitrile having been prepared by the condensation of acetylonitrile with an alcohol or phenol.  While the esters of the lower boiling alcohols may be too volatile for some purposes, it is preferable that carbon to carbon chains should not exceed six carbon atoms in length.  In general, the amount of plasticiser to be added may be 5-50 per cent by weight of synthetic rubbers and 1-10 per cent of natural rubber.  Specification 531,721 is referred to.ALSO:Natural and synthetic rubbers are plasticized by the addition of b -alkoxy or b -aryloxy propionic acid esters having the structural formula RO-CH2-CH2-COOR1, where R and R1 are the same or different groups.  Numerous esters are mentioned of which butyl b -cyclo hexoxy propionate, n-hexyl b -phenoxy propionate and butyl b -phenoxy propionate are typical. These esters may be prepared by reaction of the corresponding nitrile and alcohol in the presence of sulphuric acid at 110-120 DEG C., the desired nitrile having been prepared by the condensation of acrylonitrile with an alcohol or phenol.  While the esters of the lower boiling alcohols may be too volatile for some purposes, it is preferable that carbon to carbon chains should not exceed six carbon atoms in length.  In general, the amount of plasticizer to be added may be 5-50 per cent by weight of synthetic rubbers and 1-10 per cent of natural rubber. Specification 531,721 is referred to.
Patent GB-895471-A (GB)
Title: Grid system for thermionic beam valves and method of making the same
IPC: H01J19/00
Filed: 1960-05-24
Abstract: 895,471. Making valve grids. TESLA, NARODNI PODNIK. May 24, 1960 [May 25, 1959], No. 18275/60. Class 83 (2). [Also in Group XL (a)] In a grid system for beam valves, the pitch of the turns of one of two grids which are to be in alignment under operating conditions differs, under non-operating conditions, from the pitch of the turns of the other grid by an amount determined by the different thermal expansion of the grid supports 6-9 in operation, the supports of the grids being firmly anchored at one end of the system. The pitch differs by an amount approximately equal to α.l. #t/n, where α is the coefficient of longitudinal thermal expansion of the supports, l is the length of the grids, #t is the temperature difference between the supports of the two grids and n is the number of grid turns. During assembly, the grid system may be fixed in a frame 11 which is rotated relative to the axis of an optical system 12 through an angle # equal to tan<SP>-1</SP>(α.l.#t/d), where d is the spacing between the grids, whilst the turns of one grid, taken in order from one end of the grid to the other, are aligned with the corresponding turns of the other grid by use of the optical system. As shown, the frame 11 is moved with one end sliding along a horizontal plane while the other end slides up a wedge of angle #, the optical system 12 remaining stationary.
Patent GB-1140877-A (GB)
Title: Improvements in or relating to internal combustion engines
IPC: F02B3/06
Filed: 1966-04-26
Abstract: 1,140,877. Supercharged I. C. engines. MASCHINENFABRIK AUGSBURG-NURNBURG A. G. April 26, 1966 [May 13, 1965], No. 18318/66. Heading F1B. The output of an exhaust driven turbo-charger 1, 2, is increased at low speeds by delivering some of the air from the compressor delivery pipe 3 through a by-pass 10 to the exhaust pipes 6, 7, leading to the turbine and also by feeding compressed air to the turbine 1 from an engine-driven compressor 17. The exhaust pipes 6, 7, from separate groups of cylinders lead to separate nozzle chambers 8, 9, and the pipe 18 from compressor 17 leads to a third nozzle chamber 19. The by-pass pipe 10 has separate branches 11, 12, leading to the pipes 7, 6, each branch containing a non-return valve 13, 14, and a control valve 15, 16. If the valves 13, 14 are omitted the pipes 11, 12 are matched so that a pressure peak travelling from point 23 through pipes 11, 12, coincides at point 22 with a pressure peak in pipe 6. The compressor 17, Fig. 3 has an axially adjustable cylinder 31 to vary its output.
Patent GB-424832-A (GB)
Title: Improvements in and relating to the control of grid-controlled valves
IPC: H02M1/04
Filed: 1933-06-27
Abstract: 424,832. Converting; motors. AKT.- GES. BROWN, BOVERI, & CIE, Baden, Switzerland. June 27, 1933, No. 18329. Convention date, June 27, 1932. [Classes 35 and 38 (ii)] Machines with vapour and like rectifiers in place of commutators.-A discharge device used as an inverter, &c. or for operating commutatorless motors is controlled by means of an auxiliary valve so that periodically momentary overriding positive impulses are applied to the grids these grids being normally negatively biassed. In the form shown in Fig. 1, when the auxiliary valve 8 is nonconducting the grid of the valve 1 is negatively biassed from the battery 7, but when the valve 8 is rendered momentarily conductive by grid control, the whole of the battery 7 is connected across the resistance 17 so that a positive bias is applied to the grid 5. Back-ignition and overload protection is secured by means of a relay 15 energized from a current transformer 16, which opens the auxiliary valve circuit so that the grid remains permanently negatively biassed. In a modification the valve 8 and battery 7 are reversed so that the grid 5 is negatively biassed when the valve 8 is conductive and positively biassed when it is nonconductive. In the form shown in Fig. 3, particularly for back-ignition protection, the cathode of the auxiliary valve is connected to the discharge device casing, the grid 10 being connected to the cathode, so that under normal operation the grid of the valve 8 is negative biassed and a positive bias is applied to the grid 5. When back-ignition occurs the casing becomes negative with respect to the cathode 3 so that the valve 8 becomes conductive and the grid 5 is negatively biassed to stop the discharge. Specification 389,722 is referred to.
Patent GB-950082-A (GB)
Title: The manufacture of silicon-iron having cubic texture
IPC: B21B3/02
Filed: 1960-05-24
Abstract: In a process for the development of cubic texture in iron-silicon alloys containing 2.5-4% of silicon, the material is hot-rolled to an intermediate gauge, annealed, e.g. at 1400-1800 DEG F., cold rolled with a reduction of 55-80%, annealed in hydrogen in the temperature range 2200-2350 DEG F. whereby the carbon content is reduced, and then given a cold reduction of 75-90% to final size.  The sheet is then given a primary recrystallization anneal either box or continuously in the range 1300-1700  DEG F. followed by secondary recrystallization at 1900-2300 DEG F.; these two treatments may be combined, primary recrystallization occurring during heating to the secondary recrystallization temperature.  The final heat-treatment is preferably carried out in an atmosphere of hydrogen or a non-reactive gas such as argon or helium, the atmosphere containing a small amount of a highly-polar compound such as hydrogen sulphide, oxides of sulphur or oxides of carbon or mixtures of these.  As exemplified an annealing separator of magnesia containing a small amount of sulphur is used in a hydrogen atmosphere.
Patent GB-1009938-A (GB)
Title: Improvements in or relating to brakes for warp let-off motions
Inventor: SHARPLES JOHN
IPC: D03D49/08
Filed: 1962-05-14
Abstract: 1,009,938. Warp beam brakes. CRAVEN TEXTILE PATENTS Ltd. May 6, 1963 [May 14, 1962], No. 18374/62. Heading D1E. A warp beam brake comprises a section 10 fixed to the loom and a section 12, hinged to the fixed section 10, which may be tightened on to the brake drum by a spindle 44 operated from the front of the loom. Specification 681,559 is referred to.
Patent GB-877789-A (GB)
Title: Aircraft flight control systems
IPC: G05D1/06
Filed: 1957-11-13
Abstract: 877,789. Automatic control systems for aircraft. SPERRY RAND CORPORATION. Nov. 13, 1957 [Nov. 13, 1956], No. 18382/61. Divided out of 877,788. Drawings to Specification. Class 38 (4). The subject-matter of this Specification is substantially the same as that described in Specification 877,788 but the claims are concerned with an aircraft flight control system including airspeed control means, automatic pitch altitude control means adapted to control the pitch-attitude of the aircraft with respect to a reference pitch, means responsive to departure of the airspeed of the aircraft from a reference airspeed for deriving an airspeed-error signal, and means for applying the airspeed-error signal to adjust the air-speed control means in the sense to cause the aircraft to change its speed so as to reduce the signal towards zero and to adjust the pitch-attitude of the aircraft through the automatic control means. Specification 655,172 also is referred to.
Patent GB-1158537-A (GB)
Title: Improvements in or relating to an Expendable Lance
IPC: C21C5/46
Filed: 1968-04-19
Abstract: 1,158,537. Measuring temperature. ELECTRO-NITE CO. April 19, 1968 [May 11, 1967], No. 18554/68. Heading G1D. [Also in Divisions C7 and H1] An expendable lance for measuring the temperature, the liquidus arrest value and for withdrawing a sample of molten metal from a bath comprises an expendable tube 12 e.g. of cardboard, a body structure 14 e.g. of sand at one end of the tube 12 and defining a chamber 16 with a passage 60 leading thereinto to enable a sample to be retained and two thermocouples 20, 22, one, 20 being disposed in the chamber 16 to measure the liquidus arrest value of the sample and the other 22 being located at the end of the tube 12 to measure the temperature of the molten metal bath. The tube 12 is adapted to be telescoped over the end of an elongated pipe 114 which forms a lance holder and in this position projections 74, 76 on the lance and carrying electrical connections for lead wires to the thermocouples 20, 22, engage in a female connector screwed to the end of the pipe 114. The female connector is coupled to recording instruments for the thermocouples. A metallic cap 36 covers the thermocouple 22 to protect the U-shaped tube 26 enclosing the thermocouple wires during passage through slag, after which the cap 36 melts. A heat destructible cover 58 e.g. of copper or lowcarbon steel, also covers the passage 60 until it fuses in the melt and a de-oxidizing material such as aluminium wire 116 is provided in the chamber 16. The thermocouple wires may be platinum and platinum-rhodium. In use, after measurement of the molten metal bath temperature using the thermocouple 22, the lance is withdrawn and the liquidus arrest value measured as the sample solidifies using the thermocouple 20. A solidified specimen within the chamber 16 can subsequently be retrieved by sawing through the lance.
Patent GB-154274-A (GB)
Title: Improvements in the cooling of the cylinders and other parts of internal combustion engines
IPC: F01L1/28
Filed: 1919-07-26
Abstract: 154,274. Auger, E. H. July 26, 1919. Addition to 130,593, [Class 7 (ii), Internalcombustion engines, Arrangement &c. of]. Valves; valve-gear. - The parent Specification describes a method of cooling and scavenging engine cylinders by admitting air tangentially at the head, thus causing it to travel in a helical stream along the cylinder wall and then return inside the stream to an axial exhaust valve in the cylinder head. The invention comprises arrangement of ports and valves for carrying out this method. In Fig. 1, the scavenging-air enters through an annular valve 6 from a valve-chest 3 and passes vanes 4 which give it a helical motion. The axial exhaust valve 9 contains the valve 12 for admitting the combustible. The valves 6, 9, 12 are opened respectively by the levers 17, 24, 31. Another arrangement comprises two passages in the cylinder head directed to give a helical motion to both the scavenging-air and live charges which enter both passages through lateral beat valves. The axial exhaust passage also has a lateral beat valve. Figs. 6 and 8 show a combination of slide and beat admission valves 57 with inclined delivery ports 60 situated in the wall of the cylinder and worked by linkage gear 68, 70, 72, 73; these valves may control both air and mixture, which pass through a three-way valve 65, or the mixture may enter by a valve 75. The axial exhaust valves 47, 49 are moved in opposite directions by the oscillation of a nut 50 with right and left handed threads on its external and internal surfaces respectively, which engage threads on the valves. In a final arrangement, there are a number of inclined air passages in thecylinder head each controlled by a beat valve.
Patent GB-227745-A (GB)
Title: Improvements in white wash for lawn tennis marking & other purposes
IPC: C08L89/00
Filed: 1924-08-05
Abstract: 227,745. Abrey, R. H., Mather, R. R., and Kitchener, R. T. N. Aug. 5, 1924. No Patent granted (Sealing fee not paid). Distempers.-A whitewash for marking tennis courts &c. comprises casein or albumen, glycerine, powdered borax, French chalk, china clay, calcium carbonate, and water.
Patent GB-1095271-A (GB)
Title: Switching elements for railway safety equipment
IPC: H03K17/80
Filed: 1965-05-04
Abstract: 1,095,271. Controlled non-linear inductors. SOC. TECHNIQUE POUR L'INDUSTRIE NOUVELLE S.A. May 4, 1965 [May 14, 1964], No. 18623/65. Heading H3B. Two or more transductors, Fig. 8, each having two cores 81, 82 and 83, 84, having a common control winding 85 which embraces all cores, the arrangement operating as a relay having normally open and normally closed contacts. The impedance of a winding 87 is high in the absence of a control winding current, but drops, due to saturation of cores 81, 82, when a control current flows, so that terminals 871, 872 represent normally open contacts. A resistive winding 86 on cores 83, 84 is A.C. energized and forms the primary of a transformer whose secondary 88 produces an output voltage only when the cores are not saturated by a control current (in 85); this output is rectified (77, Fig. 7, not shown) and used to control a normally open arrangement similar to that on cores 81, 82, which arrangement is thus rendered normally closed with respect to the control current in the control winding 85. A further embodiment (Fig. 9, not shown) provides, on the same principle, two pairs of normally open contacts (981, 982, and 983, 984) and two pairs of normally closed contacts (991, 992 and 993, 994). An extra saturating winding 89 (997) may be provided on both cores of the transformer arrangement.
Patent GB-851624-A (GB)
Title: Improvements in and relating to electric power transformers
Inventor: BEDIL MUSTAFA FAHRETTIN
IPC: H01F27/02
Filed: 1958-06-11
Abstract: 851,624. Transformers. ENGLISH ELECTRIC CO. Ltd. June 11, 1959 [June 11, 1958], No. 18649/58. Class 38 (2). A multi-phase transformer is constructed in a number of pieces such as 11, 12 (Fig. 1) each forming one phase and each in a separate tank portion 15, 16 closed by an insulating diaphragm 20 and mounted on its own base frame 17, 18. The transformer is assembled on site on a main frame 19 with the tank portions bolted together and the corresponding parts of the core portions 13, 14 close together, so that the air gap between them is small. The sealing diaphragms are protected by covers during transit. The filling medium is removed before shipment if it is a liquid but this need not be done if a gaseous filling medium is employed. The ends of the core portions may be supported by suitable packing material between them and the tank securing flanges.
Patent GB-414506-A (GB)
Title: Improvements in multi-grid thermionic valves
IPC: H01J21/20
Filed: 1933-06-30
Abstract: 414,506. Thermionic valves ; circuits. LEIBOVICI, G., 29, Rue de Lisbonne, Paris. June 30, 1933, No. 18665. [Classes 39 (i) and 40 (v).] A suppressor grid and, if desired, also a supplementary screen of a multigrid valve is connected to a cathode or other electrode through a diode. In the form shown in Fig. 1 the suppressor grid 5 of a pentode is connected to the plate 9 of a diode 7, and the cathode 2 is con nected to the cathode 8 of the diode. The cathode of the valve, which may be directly or indirectly heated, or in the latter case the heater, may constitute also the diode cathode. In one construction of this kind, the supports for the suppressor grid and the cathode extend above the electrode system and the supports are interconnected by a nickel strip which passes near the cathode and constitutes the anode of the diode. In another form, the supports for the suppressor grid are bent round and brought towards the base of the valve so that they lie near the filament and constitute the diode anode.
Patent GB-1504365-A (GB)
Title: Method of operating a gas discharge panel display device
IPC: G09G3/288
Filed: 1975-05-05
Abstract: 1504365 Matrix displays INTERNATIONAL BUSINESS MACHINES CORP 5 May 1975 [27 June 1974] 18672/75 Heading G5C Sustain pulses applied to a gas discharge display/memory panel have a frequency of 40-80 kHz and a rise time of 1À8 to 2À2 Á sec. such that the pulses terminate at the same time as the ionization current, and the gas deionizes. A Ne-A filled panel with walls 0 01 inch apart is driven by 40-80 kHz pulses having an amplitude of 110-200 V. The method allows the pulse frequency to be increased thereby increasing the operating margin, i.e. the difference between the sustain voltage at which unwritten cells are turned on and the minimum voltage required to sustain discharges.