baber/WOPTO huggingface dataset:
Patent GB-516247-A (GB)
Title: Improvements in or relating to television systems
IPC: H04N3/08
Filed: 1938-06-24
Abstract: 516,247. Television receivers. SCOPHONY, Ltd., THOMSON, A. F. H., and ROSENTHAL, A. H. June 24, 1938, Nos. 18811, 18812, and 20276. [Class 40 (iii)] An intermediate record is formed by the received signals, and this record is scanned to produce picture signals at a line frequency, which may differ slightly from the line frequency of the received signals, and these new picture signals modulate a scanning beam to form the received picture. The invention is designed to eliminate the difficulty of causing a mechanical scanning device to follow small variations of line frequency at a transmitter. As shown in Fig. 1, the received picture signals are applied to a supersonic modulating device 4 having a length equal to one picture line ; the line synchronizing signals are applied to a similar device 6 to produce a scanning beam which is directed on to the line produced in the device 5 by a rotating mirror drum ; this scanning beam is modulated by the line in the device 5 to produce picture signals in a cell 10 which are applied to modulate light from a source 25, the modulated light being scanned over the viewing screen by the drum 9 and drum 14. The picture signals in 10 have a line frequency that is dependent only on the rotation of the drum 9 and is independent of the line frequency of the received signals or any variation in the received line frequency. In a modification, the scanning beam from 6 is produced by a cathode-ray beam traversing a fluorescent screen, Fig. 2 (not shown). The received signals may produce a stationary record of each line at 22, Fig. 3, and this record is scanned by the drum 9 over an aperture 24 to produce picture signals at the new line frequency in cell 10. In a further modification, Fig. 4, the received signals reproduce a line in 5 which is scanned by light produced by the cathode-ray tube 30 to produce the new line frequency signals in the cell 10 ; the line synchronizing signals produce light impulses in a lamp 35 and these light impulses are reflected from drum 9 through a wedge-shaped slot 36 (or a slot of progressively increasing transparency) to produce pulses in a cell 38 ; these pulses are fed to an amplifier 39 which produces in the output a wave corresponding to the envelope of the pulses, and this wave is used to deflect the cathode-ray beam. Alternatively, the slot 36 may be replaced by a prism distributing the light to two cells whose outputs are combined, Fig. 5 (not shown). The received signals may be recorded on the storage electrode of a cathode-ray tube, and the storage electrode scanned at the new frequency to produce the desired signals, Fig. 6 (not shown). The received signals may be applied to a cathode-ray tube whose fluorescent screen has an after-glow, and the screen scanned at the new line frequency Fig. 7 (not shown). Specifications 439,236, 474,970, and 511,796, are referred to.
Patent GB-569031-A (GB)
Title: Improvements in or relating to electric amplifiers
IPC: H04R3/10
Filed: 1943-11-12
Abstract: 569,031. Public address systems. HOULGATE, H. J., WHEELER, G. C., and FOUNTAIN, Ltd., G. R. Nov. 12, 1943, No. 18826. [Class 40 (iv)] In a public address system, the microphone, which is preferably of the type described in Specifications 507,183, 537,524 and 553,030, is fed from a resistance R4 in the negative lead of the amplifier through a smoothing circuit C1, L1 and a switch S. When the latter is open, the voltage drop across R4 paralyses the amplifier. The latter comprises three pushpull pairs in parallel and includes feed-back potential dividers to which are connected a neon-tube indicator N.
Patent GB-154659-A (GB)
Title: Process of manufacturing electric steel
IPC: C21C5/52
Filed: 1919-07-30
Abstract: 154,659. McConnell, J. July 30, 1919. Purifying and refining.-The charge from a con-- verter, or open-hearth furnace, is finished in an electric furnace, and alloying additions are made during the pouring of the product into the electric furnace. The charge is run from the converter 4 into a large ladle 1 located beneath movable electrodes 3, and provided with a movable cover 5 to which the electrodes may be secured. The electrodes may be introduced into the charge after pouring; or they may be introduced first and gradually withdrawn during the pouring. The alloying additions, such as ferrochrome, are supplied from a container 6 in a cold and powdered state, and contact with the stream of molten metal while it is falling freely and unsupported. If it be desired to remove traces of sulphur in the electric furnace, lime, fluorspar, and calcium chloride may be added to increase the fluidity of the slag.
Patent GB-570055-A (GB)
Title: Improvements in retainers or separators for electric accumulators
IPC: H01M4/76
Filed: 1943-11-12
Abstract: 570,055. Battery separators. CHLORIDE ELECTRICAL STORAGE CO., Ltd. (White, C. C.). Nov. 12, 1943, No. 18896. [Class 53] In batteries of which the plates are formed of pencils of active material 14 on conducting spines 12, the retainer or separator for each pencil comprises a sleeve 16 formed of mutually unattached threads of synthetic resin made, for example, by knitting or weaving, shrunk on the pencil. The resin may be of the CH3: C< type, which includes solid polymerized vinyl esters such as polyvinyl chloride, polyvinyl acetate and their co-polymers: the acrylic resins, such as polymerized methyl-methacrylate and ethyl-methacrylate: and polystyrene, the thread being-treated to orientate its molecules lengthwise of the thread so that the fabric shrinks upon being heated to a temperature insufficient to soften the thread. A sleeve may be provided for each pencil or the pencils may be inserted in pockets formed :by uniting the opposite sides of a single sleeve, e.g. by vertical seams as shown at a in Fig. 5 and as described in Specification 542,298 or by interlacing threads as described in Specification 560,519, between the pencils. The upper and lower ends of the sleeve or sleeves extend beyond the pencils, and when shrunk thereon close over shoulders 13 on the spines, as shown at 17 and 18 in Fig. 1. The upper ends of the spines are inserted in a top-bar 10 having a terminal lug 11 and the lower ends of the spines with the surrounding portions of sleeve or sleeves 16 are embedded in a bottom bar 15 formed by moulding plastic in situ. In a modification, sleeves are employed having only their ends formed of shrinkable material, the main portion of the sleeve being formed of glass thread. This is heated to shrink the ends thus securing the sleeve firmly in position on the pencil or plate. Specification 542,405 also is referred to.
Patent GB-1455478-A (GB)
Title: Stabilised copolyesters
IPC: C08G63/78
Filed: 1974-04-30
Abstract: 1455478 Stabilized copolyetheresters E I DU PONT DE NEMOURS & CO 30 April 1974 [30 April 1973] 18937/74 Heading C3R A stabilized copolyetherester composition comprises (a) a copolyetherester in admixture with (b) a diaryl amine antioxidant and (c) a nickel salt of a Schiff's base derived from salicylaldehyde and an aromatic amine, the copolyetherester being derived from (i) a poly(alkylene oxide) glycol of molecular weight 400-6000 and a carbon to oxygen ratio of from 2À0 : 1 to 4À3 : 1, (ii) a dicarboxylic acid of molecular weight less than 300 and (iii) a diol of molecular weight less than 250, and containing from 15-95% by weight of units derived from (ii) and (iii). The composition preferably contains from 0À2 to 5À0 weight per cent of the diaryl amine and from 0À1 to 3À0 weight per cent of the nickel salt, the percentages based on the copolyetherester. The composition may also contain carbon black, silica gel, alumina, clay or glass fibres. The examples describe compositions comprising (1) a copolyetherester derived from polytetramethylene ether glycol (molecular weight about 975), 1,4-butanediol and dimethyl terephthalate, optionally with dimethyl phthalate, (2) the following diaryl amine antioxidants: 4,4<SP>1</SP> - bis(α,2 - dimethylbenzyl)diphenylamine, phenyl - α - naphthylamine, phenyl - # - naphthylamine, dioctyl diphenylamine, N,N<SP>1</SP>- diphenyl - p - phenylene diamine and symdi - # - naphthylphenylene diamine, and (3) the nickel salt of the Schiff's base derived from salicylaldehyde and 2-chloroaniline.
Patent GB-1457569-A (GB)
Title: Method for the preparation of esters of polyalcohols
IPC: C09K23/34
Filed: 1974-04-30
Abstract: 1457569 Fatty acid esters of polyalcohols CHEMIE COMBINATIE AMSTERDAM BV 30 April 1974 [15 May 1973] 18941/74 Heading C2C Esters of aliphatic carboxylic acids containing 10-22 carbon atoms with linear aliphatic polyalcohols of formula (where n = 4 or more) or with glycosides of such polyalcohols are obtained by reacting the acid with the polyalcohol or glycoside in the presence of at least 10% by weight, calculated on the weight of polyalcohol or glycoside of an alkali metal soap of an aliphatic acid containing 10- 22 carbon atoms at 100-190 C. with simultaneous elimination of the water formed during the reaction. The soap may be added as such, or formed in situ by adding for example an alkali metal hydroxide, bicarbonate or carbonate or salt of a volatile acid. The acid is for example palmitic, stearic, oleic or lauric acid or mixtures thereof. Suitable polyalcohols are erythritol, arabitol, xylitol, sorbitol, mannitol, dulcitol, threitol, ribitol, talitol, allitol, glucoheptitol and perseitol; suitable glycosides are obtained by hydrogenating di- or oligo-saccharides, e.g. maltose, lactose, cellobiose, isomaltose, melibiose, turanose or gentiobiose. Products obtained are mono, di and higher esters of the polyalcohols. These products may be modified by further reaction, with for example a water-soluble organic acid of 2-6 carbon atoms (e.g. acetic, propionic, lactic, glycolic, succinic, fumaric, maleic, malic, tartaric or citric acid, or a hydroxy acid entirely or partially esterified with acetic and/or propionic acid) or an anhydride or ester thereof (e.g. the ester of a C 1 -C 18  aliphatic alcohol, the alcohol being partially or completely eliminated during the reaction); where the acid contains more than one carboxylic group, free carboxylic groups in the product may be neutralized, e.g. with sodium hydroxide. The products are emulsifiers.
Patent GB-516543-A (GB)
Title: Improvements in or relating to electron discharge devices and grid structures therefor
IPC: H01J19/42
Filed: 1938-06-28
Abstract: 516,543. Thermionic valves. STANDARD TELEPHONES & CABLES, Ltd., and GOODCHILD, F. D. June 28, 1938, No. 19144. [Class 39 (i)] The grid of a discharge device is in the form of a plurality of lengths of wire or ribbon each tensioned by attachment to a point in a transverse resilient strip fixed at points on each side of said points of attachment. In the form shown, the grid 2 is formed by passing a wire to and fro between apertured mica bridges 6, 7 reinforced with nickel plates 10 the lower bridge being fixed to the supports 4. When the grid wire is in position it is tensioned by sliding the upper bridge 6 along the supports 4 and welding it in position. The flanges of the anode 1 are also welded to the supports 4. Additional grids may be provided on the same or on additional bridges or otherwise arranged.
Patent GB-445175-A (GB)
Title: Improvements in electromagnetic wave receiving apparatus
IPC: H03G11/00
Filed: 1934-06-29
Abstract: 445,175. Wireless receiving-apparatus. MONGE, G. DE, Flostoy, Namur, Belgium. June 29, 1934, No. 19202. Void [Abridged as open to inspection under Sect. 91 of the Acts, Jan. 15, 1935]. [Class 40 (v)] A limiting arrangement connected in parallel with the receiver to remove parasitic disturbances consists of a triode valve with the grid-cathode space forming the limiting means. The Figure shows a pair of valves A, B arranged to serve as a full wave limiter with the grids and anodes connected by small impedances 6, 7 respectively. Rheostat 9 is provided to control the bias of the grid 5a which is connected to the grid 5b by high resistance 12. A choke 12a and resistance 13 are provided in the connection to the grid of the first valve of the receiver. In a modification (Fig. 2, not shown), space charge or electron accelerating grids are additionally provided in the valves.
Patent GB-242710-A (GB)
Title: Improvements in or relating to electric relays
IPC: H01H51/32
Filed: 1924-08-14
Abstract: 242,710. Reyrolle & Co., Ltd., A.. Leeson, B. H., and Minton, R. C. Aug. 14,1924. Electromagnetic interrupters and switches; electrically-released switches; relays.-In a frequency selector each unit consists of three vibratory contact-makers mounted on tuned reeds D, Figs. 2 and 3, which vibrate under the action of a polarizing permanent magnet D<3> and windings D<6> carrying the alternating current. The periods of the three reeds differ slightly among themselves in order to allow a little latitude in the frequency determining vibration, and differ considerably from the periods of the other similar units in order that only one unit shall respond at a time. Instead of the permanent magnet, a direct current coil on a soft iron core may be used. An instrument in which twelve units, each comprising three tuned contact-makers, are combined with a common polarizing and controlling magnet is described. A selective contact maker for the closure of any one of a large number of local circuits is operated successively along two co-ordinates by two successive actions of the frequency selector. A third co-ordinate may be added, allowing 1728 local circuits to be controlled with a frequency selector of twelve units. The vibrating reeds, instead of carrying current themselves, may serve, when vibrated at the necessary amplitude, to trip a latched contactmember, or at a certain amplitude, the reed may come under the influence of an electromagnet which holds it in position to close a circuit. Specifications 23319/07, [Class 40, Electric telegraphs &c.], and 229,388 are referred to.
Patent GB-848102-A (GB)
Title: Improved gas mixing device
Inventor: BINKS HAROLD
IPC: F23D14/60
Filed: 1957-06-19
Abstract: 848,102. Gas burners. AMAL Ltd. June 18, 1958 [June 19, 1957], No. 19281/57. Class 75(1). [Also in Group XXIX] In a gas mixing apparatus comprising an air jet 3 supplying air into a mixing chamber 2 and inducing therein combustible gas through apertures 4, the supply of combustible gas to the mixing chamber is supplemented by an additional supply controlled by pressure sensitive means operated by the pressure of the air supply. The gas apertures 4 are formed in an annular chamber 5 which is fed with a first supply of gas by a jet 6 and with a second supply of gas through a pipe 7 extending from a lower chamber 15 in a body 12 divided by a flexible diaphragm 16. The lower chamber 15 is connected by pipes 14, 14a to the gas jet 6 and an upper chamber 21 in the body 12 is connected by pipes 9, 10 to the air jet 3. The diaphragm operates a piston valve 18 controlling the flow of gas into the pipe 7 and comprising a piston 24 having an axial passage 23 and radial passages 26 and a cylinder having radial passages 27, 28. When the air pressure in the upper chamber 21 drops the piston rises to open first the lower radial cylinder passages 27 to the pipe 7 and then to open the upper radial cylinder passages 28 to the radial piston passages 26. The device maintains the gas/air ratio constant over a wide range of air pressures. The mixture passes from the mixing chamber 2 to a burner tube 1. The lower chamber 15 may be fed with gas which is different from and/or at a different pressure from the gas supplied to the jet 6. The piston valve may be replaced by a needle valve or a combination needle and piston valve. A needle may rest on the upper end of the piston valve and slide in a closed transparent tube fitted to the body 12, the arrangement serving to indicate the pressure of the air above the diaphragm. A by-pass gas supply for a pilot flame is provided by radial ports 29 located in a part of the piston clear of the cylinder and communicating with an extension 23a of the axial passage 23.
Patent GB-1134225-A (GB)
Title: Process for the production of laminated materials
Inventor: FINLAY-BROADBELT DAVID
IPC: D06N3/06
Filed: 1965-05-07
Abstract: 1,134,225. Foamed plastics laminates. FISONS INDUSTRIAL CHEMICALS Ltd. 21 April, 1966 [7 May, 1965], No. 19292/65. Heading B5N. [Also in Division B2] A process for forming cellular polymeric material laminated to a woven or felted material comprises forming a layer of a gelled plastisol containing a polymeric material and a blowing agent and laminating this on to the plastisol layer of a plastisol-backed woven or felted material and heating the gelled layer of plastisol and the plastisol layer of the plastisolbacked woven or felted material to a temperature at which the blowing agent is decomposed and the plastisols are cured the heating being effected by the use of electrostatic vibrations having a frequency in the radio range. The layer of gelled plastisol may be formed by a process comprising applying a plastisol containing a blowing agent to a carrier material such as an endless silicone rubber-glass reinforced belt and heating the plastisol to a temperature at which it gells, but below the temperature at which the blowing agent decomposes, the heating being effected in an oven or by the use of electrostatic vibrations in the radio range. The layer is then laminated to a plastisolbacked fabric, such as a carpet, the polymers may comprise polymers and copolymers of vinyl chloride, vinyl acetate, vinyl alcohol, and vinylidene chloride. Numerous blowing agents are specified.
Patent GB-966725-A (GB)
Title: Improvement in separating residual gases of an ammonia synthesis process
Inventor: KOBERT GUNTER
IPC: F25J3/02
Filed: 1963-05-15
Abstract: 966,725. Cold separation of gas mixtures. LEUNA-WERKE WALTER ULBRICHT VEB. May 15, 1963, No. 19323/63. Heading F4P. In a process for separating the residual gases of an ammonia synthesis process into crude liquid argon which is discharged from the separating column 6 through a line 15, liquid methane containing krypton and xenon through a line 18, crude gaseous argon, nitrogen gas containing a trace of argon and a mixture of hydrogen and methane through lines 14, 13, 8, respectively, the cold requirements are met in part by expansion with external work of a portion of feed gas in an engine 3 after cooling in an exchanger 1 traversed by reverse flowing gaseous products and in part by an auxiliary refrigeration cycle, e.g. nitrogen, forced by a compressor 32 through exchangers 25, 23 cooled in part by a reverse flow of a portion of compressed nitrogen after expansion in an engine 37 and in part by liquid methane withdrawn from column 6 through line 22. The hydrogen-nitrogen mixture leaving exchanger 5 is cooled by expansion in an engine 10 and is recirculated through the exchanger.
Patent GB-1269862-A (GB)
Title: Process for regenerating a hydrogenation catalyst
Inventor: BAADER H
IPC: G21C1/12
Filed: 1970-04-22
Abstract: 1,269,862. Regeneration of palladium catalysts. KNAPSACK A.G. 22 April, 1970, [24 April, 1969], No. 19326/70. Heading B1E. [Also in Division C2] Catalyst comprising metallic palladium supported on silica gel or active carbon for use in the production of acetic acid and/or monochloroacetic acid by hydrogenative dechlorination of dichloroacetic acid and/or trichloroacetic acid is regenerated in the hydrogenation zone of the reactor by treatment at a temperture of from 50 to 200C with dry chlorine gas, the hydrogenation zone being exhausted to a pressure of from 500 to 750 mm. Hg either simultaneous with or subsequent to the treatment of the catalyst with chlorine gas. The hydrogenation zone, which may be made of or lined with silver, may be scavenged with nitrogen prior to and after catalyst regeneration.
Patent GB-1409462-A (GB)
Title: Building construction
IPC: E04B1/348
Filed: 1973-04-24
Abstract: 1409462 Prefabricated room units H H BOOT & SONS PTY Ltd 24 April 1973 [10 May 1972] 19363/73 Heading E1A A prefabricated room unit consists of a unitary roof/wall component to which a floor is attached, the roof/floor component being constructed of concrete having a thickness in the range from " to 2" except in areas of localised thickening and the roof 15 being in the form of a dome. The roof/floor component is preferably a monolithic component re-inforced by steel mesh and provided with a thickened cornice, the component being moulded. The room unit is provided with service fittings and suitable finishes and for details thereof together with moulding details of the floor and roof/wall component, the Specification and remaining drawings (not shown), should be referred to.
Patent GB-601211-A (GB)
Title: Improvements in or relating to the manufacture of alpha-chloroacrolein
IPC: C07C45/66
Filed: 1943-11-19
Abstract: a -Chloroacrolein is prepared by distilling an aqueous solution, containing free inorganic acid, of a  - chloro - b  - hydroxy - propionaldehyde.  In example 1, chlorine is passed through an aqueous solution of acrolein at 10 DEG  C. until a persistent yellow green colour is obtained.  The excess chlorine is destroyed by means of sulphur dioxide and the a -chloro-b -hydroxy propionaldehyde salted out with sodium sulphate.  The remaining solution which contains mineral acid and some of the aldehyde is steam distilled and a -chloroacrolein is obtained.  In example 2, the yield of a -chloroacrolein obtained by merely steam distilling the dilute solution of a -chloro-b -hydroxy propionaldehyde prepared as above, is compared with that obtained when the solution is treated by one of the following methods before distillation: (a) adding more hydrochloric acid; (b) neutralising the solution; (c) extracting the aldehyde and diluting it with water; (d) adding sulphuric acid to a solution obtained as (c); (e) carrying out the chlorination in the presence of excess calcium carbonate and distilling the resultant solution.  Reference has been directed by the Comptroller to Specification 573,720.
Patent GB-1332450-A (GB)
Title: Ion exchange resin regeneration
IPC: B01J49/00
Filed: 1970-04-23
Abstract: 1332450 Regenerating ion-exchange resin ECODYNE CORP 22 Oct 1970 [24 Oct 1969] 19429/73 Divided out of 1331273 Heading B1J Ion-exchange resin is regenerated in a column 10 by passing regenerant into the column through an inlet 22 and rinse water through an inlet 30 below the inlet 22, the through an outlet 34. The water forms a gap in the resin as shown and at the end of a regeneration period, firstly, a valve 34 is shut to cut off the supply of regenerant and later a valve 32 is shut to cut off the supply of rinse water. The delay is such that the lowest level of regenerant entrained in the resin will have resin from the level of the inlet 22 to a level B such that, when a valve 38 in a drain-pipe 36 is opened to de-pressurise the column so that the gap in the resin is filled and a new batch of exhausted resin is fed from a hopper 12 through a non-return valve 16, the lowest level of entrained regenerant will not fall below the level of the inlet 22. Thus, the resin is not subjected to an over-dose of regenerant. When the valve 38 is closed and the valves 24 and 32 opened, the gap in the resin is reformed and a batch of regenerated and rinsed resin is forced out of the bottom of the column through a pipe 20 into a metering hopper. The valves 38, 24, 32 and a valve 28 controlling the supply of dilution water may be controlled automatically by a device 40. The method is particularly applicable to the regeneration of cation exchange resin using sulphuric acid.