baber/WOPTO huggingface dataset:
Patent GB-211624-A (GB)
Title: Improvements in or relating to devices for delivering a predetermined quantity of liquid or pulverulent material
IPC: G01F11/16
Filed: 1922-12-12
Abstract: 211,624. Cividanes, C. Dec. 12, 1922. Tilting or inverting bottle or vessel apparatus; moving - chamber apparatus.-A stopper for a receptacle is provided with a chambered member adapted to be moved transversely relatively to the stopper and provided with ports adapted to register with ports in the stopper so that in one position of the member the chamber may be filled with powder or liquid from the receptacle, and in the other position may discharge its contents. The head c of a stopper or cap b is slotted to accommodate a sliding member e provided with a measuring-chamber e<1> which is formed with ports adapted to register with inlet and outlet ports f, g in the stopper. In a modification, Figs. 10 and 11, the cap b is adapted to be screwed on to the neck of the receptacle and the movable member c has two flanges which engage guides e on the flat surface of the cap, small projections g, h on each serving as stops to limit the movement of the member. The inner face of the movable member is recessed and provided at this portion with a cork washer k to close the aperture d<1> in the cap. The discharge in this form is through the open top of the sliding member.
Patent GB-605121-A (GB)
Title: Improvements in or relating to electrical devices for use in checking the equality of two frequencies
IPC: H04H20/67
Filed: 1945-12-14
Abstract: 605,121. Frequency measurements. PHILIPS LAMPS, Ltd. Dec. 14, 1945, No. 3393]. Convention date, Sept. 17, 1940. [Class 37] In a device for checking the equality of two frequencies by means of a " magic eye " the control electrode is decoupled for any frequencies higher 'than those that can be seen by the eye. Two oscillators 1, 2 generate frequencies f1, f2, at least one of which is variable. At a mixing stage 3 the difference frequency f1-f2 is produced and applied between the control grid 4 and cathode 5 of the amplifier part of a " magic eye," this part comprising a pentode. The screen grid 6 of this pentode is directly connected within the tube to the control electrode 8 of the " eye " proper, which also has a fluorescent screen 9. The screen grid 6 is supplied across a resistance 10 and is also connected through a condenser 11 to an earthed point 12, which is connected to the cathode 5 through a resistance 13 shunted by a large condenser 14. The condenser 11 forms a byepass for frequencies above 20 cycles per second so that appreciable potential fluctuations above this frequency cannot arise between the control electrode 8 and the cathode 5, consequently variations in the luminous image are not seen on the screen 9. If the difference frequency is below 20 cycles per second the luminous image flickers, and when the frequency of this flickering falls to zero the frequencies f1, f2 are equal.
Patent GB-800517-A (GB)
Title: Improvements in or relating to gas turbines
Inventor: HAWORTH LIONEL
IPC: F01D5/18
Filed: 1955-11-28
Abstract: 800,517. Gas turbine bladed rotors. ROLLSROYCE, Ltd. Nov. 16, 1956 [Nov. 28, 1955], No. 34080/55. Class 110 (3). In a gas turbine bladed rotor, the blades each comprise a vane portion 18, a root portion 19 which is mounted on the rotor disc 16, and a stem portion 21 extending between the vane and root portions, each blade being formed with a closed internal cavity 22 extending lengthwise of the vane portion and into the stem portion and containing a substance such as sodium which is at least in part in the liquid phase at the temperature attained by the blade in operation. Radially-extending passages are formed in the annulus constituted by the assembly of stem portions and means are provided to supply cooling fluid to flow outwardly through the radially-extending passages. In a first embodiment, two closed cavities 22 are formed in the blade. Radially-extending fins 23 are provided on the circumferentially-facing surfaces of the blade stem 21, the fins extending from a point radially-spaced from the root portion 19 to the blade platform 21a and the fins on adjacent stem portions co-operate to form the cooling fluid passages. An axially-extending manifold 24 is formed between the root portions 19 and fins 23 and is supplied with cooling fluid such as air tapped from the compressor of the engine, the cooling air flowing outwardly through the passages formed between the fins 23 and escaping into the working fluid passage as indicated by the arrows 30. Circumferentially-extending cooling fins 27 are formed on the upstream axially-facing surfaces of the blade stems 21. An annular blanking plate 25 is provided at the downstream side of the blade stem and root portions, the plate 25 engaging the rotor disc 16 also the blade platforms 21a thereby serving to prevent axial disengagement of the blades. In a second embodiment, Fig. 4, further passages 125 are provided extending through the vane portion 18. Cooling air flows through the passages between the fins 23 from a manifold 24 as in the first embodiment, but discharges from the passages into a second manifold 124 formed beneath the blade platforms 21a, the cooling air flowing from the manifold 124 into the passages 125 extending through the vane portion and discharging at the blade tip as indicated by the arrows 130. In the first embodiment, the passages between the fins 23 may discharge into an axially-extending channel, a single outlet leading from the channel to the working fluid passage, uniform flow through the passages being achieved thereby. This result may also be achieved by varying the sizes of the cooling fluid passages or the outlets therefrom. The cooling air may have a liquid sprayed into it; alternatively the cooling fluid may be a liquid.
Patent GB-1242938-A (GB)
Title: Purification of iron pyrites cinders
Inventor: COLOMBINI ARIANO
IPC: C22B1/10
Filed: 1969-07-07
Abstract: 1,242,938. Purifying roasted iron pyrites. MONTECATINI EDISON S.p.A. 7 July, 1969 [8 July, 1968], No. 34115/69. Heading C1A. Iron pyrites cinders (haematite) is freed from arsenic and non-ferrous metals by reducing the cinders, using air and a carbonaceous fuel, at 850-950‹ C. with a contact time of 30-90 minutes to effect a 10-50% reduction of haematite to magnetite; chlorinating the partially reduced cinders in a fluidized bed at 650-950‹ C. with a contact time of 30-120 minutes in an oxidizing atmosphere such that the oxygen content of the exhaust gases is at least 3% by volume; and then leaching the chlorinated product with a 0À2-2% by wt. aqueous solution of a mineral acid, e.g. HC1 and/or H 2 SO 4  using a liquid/solid weight ratio of at least 2 : 1 and a contact time of 15-30 minutes. The fluidized bed chlorination may be effected in 2 or more stages. If the iron content of the chlorinated cinders is low, they may be subjected to a magnetizing reduction and magnetic concentration before the acid leach. The purified cinders may be pelleted.
Patent GB-951179-A (GB)
Title: Thermally insulated containers
IPC: F17C3/02
Filed: 1962-09-07
Abstract: 951,179. Storing liquefied gases. CONCH INTERNATIONAL METHANE Ltd. Sept. 7, 1962 [Oct. 30, 1961], No. 34283/62. Heading F4P. The inner shell of a double-walled liquefied gas storage container 22, Fig. 4, having heat insulation material e.g., balsa wood or quippo between the shells is formed of a plurality of panels 10 of sheet material e.g. stainless steel, copper, brass, aluminium or glass fibre-reinforced plastic material bonded together along overlapping portions of their edges 18, Fig. 3, to form an impermiable membrane and each panel is provided with a central annular embossment 14 from which radiate linear embossments 16 extending to the edges 18 and serving to accommodate thermal expansion stresses. Each vertical membrane is supported by studs 21 embedded in the insulation 24 and by rods 23 welded to the inner face of the outer shell 26. In a modification the upper end of each vertical membrane is bent over and is supported by the upper portion of the insulation.
Patent GB-325578-A (GB)
Title: Improvements in apparatus for closing collapsible tubes
IPC: B21D51/36
Filed: 1928-11-22
Abstract: 325,578. Day, W. H. Nov. 22, 1928. Tubes or containers, collapsable.-In apparatus for closing the ends of collapsable tubes or containers of the kind having a pair of co-operating closing jaws, a wiping-device is provided, to remove from the jaws any of the contents of the tube which are expressed therefrom during the closing. The jaws 1, 2, which have projections 4, 5 adapted to shape the end of the tube 6, are operated by a cam 3 and a lever 8, which is connected by a link 11 to a two-armed lever 12, connected by links 15, 17 to the jaws. The wiping- device is in the form of a bell-crank lever 23, the head 21 of which is adapted to pass through apertures in the jaws, and to rest on the lower walls of the apertures, on which the material expressed from the tube collects. The other end of the lever 23 is guided in a slotted arm 26, attached to the link 15. The wiper is operated by a cam 27 and a lever 29, connected by links 31, 32 to the angle of the lever 23. The extruded material is scraped from the head 21 of the wiper by a scraper 36, and falls into a shoot 37. Specification 196,764 is referred to.
Patent GB-619099-A (GB)
Title: Improvements relating to fluid pressure braking apparatus for railway and other vehicles
IPC: B60T17/18
Filed: 1946-11-20
Abstract: 619,099. Brake signals. WESTINGHOUSE BRAKE & SIGNAL CO., Ltd. Nov. 20, 1946, No. 34362. Convention date, Dec. 22, 1943. [Class 105] To give in the running position of the driver's brake valve an immediate warning of an excessive leakage in the brake pipe system of a long train, the feed valve of which must be of considerable capacity and where consequently some time would elapse before the driver would become aware of extra leakage due for example to a break in the pipe on one vehicle, there is provided a warning device comprising a spring-loaded piston 7 with a port 18 therethrough through which the air passes, when the driver's valve 15 is in running position, to the brake pipe system 20. With leakage normal the quantity passing through the piston port 18 is such that the pressure difference does not overcome the spring 17. At excessive leakage however, the piston 7 moves and, for example, opens a whistle valve 9. If the driver's valve is in any other position than " running " the warning device is shut-off from the driver's valve and as there is then no flow through the warning device and no differential air pressure the spring closes the whistle valve 9 and no signal arises. The spring pressure may be adjusted by screwing up an abutment and then sealing the same to prevent unauthorized alteration. With bigger pressure differentials the piston in its further downward movement uncovers successive ports 6 helically arranged in a sleeve 2 which give a parallel flow.
Patent GB-984132-A (GB)
Title: A new or improved hinge connection
IPC: A24F19/00
Filed: 1960-10-07
Abstract: 984,132. Hinges. G. M. F. PUCKERTMONEY. Oct. 6, 1961 [Oct. 7, 1960], No. 34495/60. Heading E2F. A hinge connection between two parts, such as the lid 5 and bowl 1 of an ashtray, comprises on the one part spaced opposed projections 9 and on the other part a housing 6 containing a length of compressible material 7 into the ends of which the projections are entered, the natural length of the material being greater than the distance between the projections so that the reaction between the ends of the material and the projections provides friction in the hinge The material may be a plastic, for example nylon.
Patent GB-1149729-A (GB)
Title: Isotope exchange process
Inventor: ROTH ETIENNE
IPC: C01B4/00
Filed: 1967-07-27
Abstract: 1,149,729. Deuterium exchange. HOUILLERES DU BASSIN DU NORD ET DU PAS - DE - CALAIS, COMMISSARIAT A L'ENERGIE ATOMIQUE, L'AIR LIQUIDE SOC. POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE and COMPAGNIE DE CONSTRUCTION MECANIQUE PROCEDES SULZER. 27 July, 1967 [27 July, 1966, 16 June, 1967], No. 34506/67. Heading C1A. In a process for deuterium exchange between NH 3  and H 2  wherein liquid NH 3  is enriched in D by countercurrent contact with gaseous N 2  + H 2  in 2 towers (T 1  and T 2 ) then cracked (at C) to give N 2  + H 2  for passing through T 2 , and the gases from T 1  are synthesized (at S) to give NH 3  for passing to T 1 , product low-D NH 3  being withdrawn after S and high-D NH 3  after T 2 , and N 2  + H 2  feed being introduced between T 1  and T 2 ; T 2  and optionally also T 1  is operated at a pressure at most equal to that of the gases leaving C. Where only T 2  is at a low pressure, the gases may leave C at 50-60 bars, leave T 2  at 40- 50 bars, be compressed to 360-410 bars between T 2  and T 1 , and leave T 1  at 350-400 bars; then after synthesis, the NH 3  is expanded between T 1  and T 2  (Fig. 2). Where T 1  and T 2  are both at a low pressure, the gases may leave T 1  at 30-10 bars and be compressed to 350-400 bars between T 1  and S. Alternatively, T 1 , T 2  and C may each operate at 100 bars and part of the gases leaving T 1  may be synthesized at 100 bars (in S 1 ) and recycled to T 1 , the remainder being compressed to 250-500 bars, synthesized (in S 2 ) and withdrawn (Fig. 4). S 1  and C may operate in heat exchange relationship (Fig. 5). The use of an amide catalyst is referred to.
Patent GB-334448-A (GB)
IPC: C01B21/26
Filed: 1929-11-12
Abstract: 334,448. Pauling, H. Jan. 7, 1929, [Convention date]. Gas-mixing appliances.-A mixture of air and ammonia, under pressure, is obtained by passing a stream of compressed air in counter current with a strong solution of ammonia. In the apparatus shown, the air, supplied by a pump 1, is passed into the bottom of a baffled and jacketed chamber 2, the solution, supplied by a doubleacting pump 3, being led from a supply 5 to the top of the chamber 2. The spent solution is recharged with ammonia in a second baffled chamber 4 to the bottom of which ammonia under pressure is supplied, the solution being passed to the chamber 4 by the pump 3.
Patent GB-1208938-A (GB)
Title: Camera tube regeneration
IPC: H01J9/233
Filed: 1968-07-19
Abstract: 1,208,938. Image pick-up tubes. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 19 July, 1968 [22 July, 1967], No. 34542/68. Heading H1D. The performance of a vidicon tube using an oxide target deteriorates in use due to loss of oxygen and/or water vapour from the target, and this is remedied by supplying oxygen and/or water vapour to the target. In one process the exhaust tube is connected to a pump system and opened, e.g. by magnetically moving a piece of magnetic material inside the pump duct, and oxygen and/or water vapour together with an inert gas such as helium or nitrogen is admitted for a suitable time, after which the tube is exhausted, sealed and gettered. The time depends on the partial pressures which may be between 100-500 Î 10<SP>-5</SP> Torr for the oxygen and about 1000 Î 10<SP>-5</SP> Torr for the water vapour to give a reaction time of a few minutes. In another process (Fig. 1, not shown), the tube is provided with metal rings or plates on which are disposed preparations which evolve oxygen and water vapour on heating; lead dioxide is a suitable source of oxygen and dried magnesium or calcium hydroxides are suitable sources of water vapour. When the target is to be re-activated the supports are heated by highfrequency or by a laser beam for a suitable time after which the tube is gettered by heating a getter ring. In a modification of this process (Fig. 2, not shown) the supports are disposed near thermionic cathode so as to be heated by conduction or radiation from it so that an oxygen and/or water vapour atmosphere is maintained continuously in the tube at a pressure of not more than about 10<SP>-5</SP> Torr. The target may be of lead monoxide, zinc oxide, or bismuth trioxide and may have P-type conductivity over a small depth on the surface to be scanned by the electron beam in order to reduce dark current. The P-conductivity may be provided by excess oxygen or by local doping of thallium in the lead oxide.
Patent GB-190497-A (GB)
Title: Rotor blade regulation for rapidly rotating water turbines or turbine pumps
IPC: F03B3/14
Filed: 1922-12-19
Abstract: 190,497. Kaplan, V. Dec. 19, 1921, [Convention date]. Regulating. - In water turbines or pumps wherein the angularity cf the rotor blades may be adjusted, means are provided for facilitating the turning of the rotor blades during running. Referring to the left-hand side of the Figure, which shows one form of the invention, the journal of each blade S mounted in the rotor Z bears on the conical surface of a ring r, which is mounted on ball bearings K and turns freely under the friction drive of the adjustable blade. In the construction shown on the right-hand side of the Figure, the flat surface b of the blade journal turns upon the cylindrical surface a of the supporting ring r, which may be mounted with or without ball or roller bearings.
Patent GB-956609-A (GB)
Title: Process for heating up crude benzole and other light oils rich in aromatics and olefines
Inventor: REITZ ORTWIN
IPC: C23F14/02
Filed: 1961-09-27
Abstract: The soiling of heat transfer surfaces in processes where crude benzole and light oils rich in aromatics and/or olefines are heated, is prevented by adding 1 - 1000 gms./metric ton of oil soluble copolymers having inside chains polar groups containing oxygen and nitrogen, and, if desired, sulphur, and having an average molecular weight greater than 5000.  An example describes a copolymer of styrene, tridecylacrylate and vinyl benzimidazole. Lists of suitable monomers for the polymers are given.
Patent GB-435027-A (GB)
Title: Improvements in or relating to electric conductors
IPC: H01B3/28
Filed: 1933-12-08
Abstract: An electric conductor has an insulation consisting of a mixture of unvulcanized rubber and waxes falling into the following classes: montan waxes freed from resin and bleached and hardened by oxidation, chlorinated naphthalene and wax obtained from the higher alcohols of the fat series, wax acid and vegetable oils hardened by hydrogenation.  The proportions are preferably 60 rubber and 40 wax. The rubber may be natural (preferably protein-free), depolymerized, hydrogenated or synthetic.  Balata and guttapercha may be added, as may other waxes such as carnauba, ceresin and "Superla" (Registered Trade Mark).
Patent GB-1438686-A (GB)
Title: Method for controlling quenching in a hardening process and a device for carrying out said method
IPC: C21D1/63
Filed: 1973-07-20
Abstract: 1438686 Controlled quenching VOLVO AB 20 July 1973 [28 July 1972] 34688/73 Heading C7N Quenching of a hot object in a liquid medium is regulated by varying the rate of cooling of the object by varying the pressure in the liquid medium during cooling of the object. The pressure may vary continuously throughout the cooling sequence, or a single change of pressure may take place at a given point in the cooling sequence; the initial pressure being either above or below atmospheric pressure. Cooling may take place, as shown, within a shaft 6 in a quenching bath 2; means for controlling the pressure in the shaft including a pump 4; pressure controlled lid 7; pressure dependent inlet valves 9 via which coolant may enter the shaft; and means for supplying to the shaft a liquid having a boiling point below the temperature of the shaft. Using a closed container, the pressure is controlled by raising or lowering the gas-pressure above the bath 2.
Patent GB-1396195-A (GB)
Title: Process for the heat stability of dyeings on textile substrates
IPC: D06M15/55
Filed: 1972-07-25
Abstract: 1396195 Dyeing polyester/cellulosic fibre mixtures SANDOZ LTD 25 July 1972 [27 July 1971] 34705/72 Heading D1B Blends of polyester and cellulosic fibres which have been dyed especially with disperse dyes are treated with a water-soluble polycondensate of a dialkylamine and epichlorohydrin havng a M.W. of 500 to 10,000. Preferably the polycondensate is appled in a 1 to 25% by weight aqueous solution by padding followed by drying. The preferred polycondensate is of formula in which n is about 25. Application of the polycondensate prevents migration of the dyes during subsequent heat treatments.
Patent GB-1104122-A (GB)
Title: Improvements in or relating to capacitor microphone and amplifier combinations
Inventor: GAYFORD MICHAEL LAWRENCE
IPC: H03F3/183
Filed: 1965-08-13
Abstract: 1,104,122. Converting. STANDARD TELEPHONES & CABLES Ltd. 13 Aug., 1965, No. 34728/65. Heading H2F. [Also in Divisions H3-H5] A capacitor microphone and amplifier combination has an amplifying stage for amplifying audio-frequency signals derived from the capacitor microphone and the amplifying stage is arranged to self-oscillate at an ultrasonic frequency. Such self-oscillatory signal is rectified to provide a unidirectional voltage output for polarizing the microphone. The amplifier comprises a field effect transistor stage 10, a grounded emitter stage 11 and an emitter follower output stage 12. The collector of output stage 12 is connected to the + voltage supply through a transformer winding 26. Winding 26, together with a winding 28, provides positive feedback between the collector and base circuits of stage 12. The transformer secondary 29 and a shunt capacitor 31 are such that the stage 12 selfoscillates at a frequency determined by capacitor 31. The frequency is preferably in the range 200 to 500 kc/s. The oscillatory voltage is rectified by a diode 34 and smoothed by a capacitor 32 and resistor 33. The output voltage, stabilized by a Zener diode 35, is applied to polarize a capacitor microphone 13, a resistor 15 completing the polarizing path.
Patent GB-1217567-A (GB)
Title: Thermoplastic polyester moulding compositions
IPC: C08L67/02
Filed: 1968-07-22
Abstract: 1,217,567. Thermoplastic polyester moulding compositions. FARBWERKE HOECHST A.G. 22 July, 1968 [20 July, 1967], No. 34761/68. Heading C3R. A thermoplastic moulding composition comprises a mixture of (a) a linear saturated polyester of an aromatic dicarboxylic acid and a dihydric alcohol and (b) from 0À1 to 25% by weight of the mixture of a copolymer of ethylene and an alkyl ester of acrylic, methacrylic or ethacrylic acid, preferably of molecular weight 2000 to 1,000,000. The composition may also contain a nucleating agent, e.g. aluminium silicate of particle size less than 2 Á, calcium carbonate or talc. The granulated composition may be coated with paraffin wax or other wax. Specified polyesters are polyethylene terephthalate which may be modified by 2: 6 - naphthaledicarboxylic acid, adipic acid, 1: 4 - butanediol or neopentylene glycol and poly( 1: 4 - dimethylolcyclohexane terephthalate). The ingredients (a) and (b) may be mixed together in powder or molten form or granules of (a) may be treated with a solution of (b) and the solvent then evaporated. Examples disclose compositions of polyethylene terephthalate and copolymers of ethylene and ethyl or butyl acrylate.