baber/WOPTO huggingface dataset:
Patent GB-538521-A (GB)
Title: Improvements in radio remote control systems
IPC: G08C19/14
Filed: 1940-01-31
Abstract: 538,521. Thermionic modulation. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Jan. 31, 1940, No. 1933. Convention date, Jan. 31, 1939. [Class 40 (v)] [Also in Group XXXVIII] A transmitter for remote control comprises a number of inter-locking keys 1...5, Fig. 1, each of which controls the application of current of one frequency to a modulator 27 and current of a different frequency to a modulator 29. These modulators have output filters covering the upper and lower side frequencies respectively and currents of these frequencies are fed to an antenna through circuits 41, 43 for preventing cross modulation between the component frequencies. A signal impulse may comprise more than two frequencies. At the receiving end, frequencies corresponding to those applied to the modulators 27...29 are separated out with the aid of filters and a modulator 107, Fig. 5. A signal thus causes the application of current of two frequencies to one of a number of circuits 117...121, which respond only when receiving both currents, and as a result the condition of the corresponding one of a number of double-stability circuits 135...139 is changed to effect the necessary control. Keying and modulating circuits.- Oscillations generated by pentodes 51, 53, Fig. 3, with the aid of their twoinner grids and controlled in frequency by a crystal 55 are applied to output circuits by the operation of snap keys 1, 5 which alter the potential of the outer grids. A further key 64 is provided to render the signalling keys temporarily ineffective. The oscillation from the above described circuit are applied in push-pull to the third grids grids of a pair of heptode valves such as 71, 73, Fig. 4, the inner grids of which are fed in push-pull by a crystal-controlled oscillator 69. Modulated currents are obtained from the circuit 79 to which the anodes in parallel are connected. Receiving circuit.-Each of the component oscillations of a.particular signal is fed to a separate grid 140, 142 of a heptode valve 141, Fig. 6, with biasing arrangements and time-constant circuits 138, 146 and 136, 144 such that no response is produced unless both components are present together for a pre-determined time. When a proper signal is received, an impulse is passed on to change the condition of a double stability circuit 143, 145 of known kind controlling a relay.
Patent GB-228172-A (GB)
Title: Improvements in and relating to elastic fluid turbines
IPC: F01D25/28
Filed: 1925-01-22
Abstract: 228,172. British Thomson-Houston Co., Ltd., (Assignees of Doran, J. H.). Jan. 23, 1924, [Convention date]. Mounting and supporting.-The end of of a turbine casing is supported, so as to be free to expand in any radial direction, by two pairs of diametrically disposed members, each pair being flexible in a radial direction and rigid in a transverse direction. In the example, the casing 3 is secured to the bearing and support 6, 7 by two H-section members 9, 10 on a vertical diameter and extensions 16 of the casing are secured to the bearing support 7 by other two H-section members 15. Further, the bearing is secured by L-shaped clamps 17 which permit of axial movement of the bearing.
Patent GB-928736-A (GB)
Title: An improved reciprocating rock drill
IPC: B25D9/04
Filed: 1960-01-20
Abstract: 928,736. Percussive tools. BOHLER & CO. A.G. GEB. Jan. 20, 1960 [Jan. 28, 1959], No. 2037/60. Class 124. A percussive drill comprises a drill piston, and a water duct extending from the back-head, through the piston, to a duct in the steel shank, the end of the tube in the back-head being connected to a piston defining a pressure chamber on the side remote from the drill piston in which water pressure urges the other end of the tube into contact with the steel shank. As shown, water under pressure enters a chamber formed above a piston 5 which is connected to a tube 6 extending through the tool and ending in a flexible portion 14, the end of which enters the water duct in a steel 10. The pressure of water on the piston 5 maintains the end of the tube 14 in water-tight connection with the steel, but, if desired, a spring 9 may be inserted in the chamber to augment the water pressure.
Patent GB-735225-A (GB)
Title: Improvements relating to polymers of compounds containing at least one ethylenic double bond
IPC: C08F20/44
Filed: 1952-01-25
Abstract: Polymers are made by polymerizing, in an acidic aqueous medium, one or more monomers containing at least one ethylenic double bond in an amount such that the weight of the monomer or monomers is less than 20 per cent of the total weight of the monomer and medium, using a catalyst system which may be added portionwise, comprising chloric acid and sulphurous acid and/or hydrosulphuric acid.  If desired the acids may be formed in situ from the corresponding salt and an acid. The polymerization may be effected in aqueous solution or emulsion and may be stopped before complete conversion by rendering the mixture alkaline.  Fillers, dyes, plasticizers, or natural or synthetic resins may be added before or during polymerization. Monomers mentioned are ethylene, styrene, the mono- and di-nuclear substituted methyl-, ethyl-, chloro-, amino- and nitro-styrenes, acrylic and methacrylic acids, ethyl acrylate, acrylo- and methacrylonitrile, vinylacetonitrile, allyl alcohol, vinyl acetate, vinyl chloracetate, vinyl butyrate, vinyl stearate, vinyl chloride and mixtures.  The emulsifying agent may be sulphonated paraffin oil, alkylated naphthalene sulphonates, sodium lignosulphonate, sodium cetyl or sodium lauryl sulphate, alkali metal or amine soaps of long-chain fatty acids, or cetyl trimethylammonium bromide.  The polymer may be made into fibres.
Patent GB-893757-A (GB)
Title: Methods of assembling devices incorporating bushes of rubber-like material
Inventor: CAUNT ALAN
IPC: F16F15/14
Filed: 1958-01-21
Abstract: 893,757. Assembling resilient bushes. METALASTIK Ltd. Jan. 14, 1959 [Jan. 21, 1958], No. 2095/58. Class 108(3). A rubber bush 7, Fig. 1, is assembled between inner and outer sleeves 5, 6, by supporting the outer sleeve 6 and the bush 7 upon a member 8 and a resilient member 9, placing the inner sleeve 5 upon a conical member 10, and forcing the members 5 and 10 down into the bush. The member 9 is resilient and maintains contact with the conical member 10 throughout the assembling movement. Alternatively, the inner shell 5 may be supported upon the members 8 and 9, when the outer member 6 is supported by a conical member 10 and moved downwardly into position outside the bush 7. In a further method of assembly, Fig. 3, the resilient bush 7 is forced between the nested members 5, 6, by being pushed down between a member 12 and a conical member 10 by a member 13 which engages the resilient member 9. Whilst assembly is taking place by any of the described methods relative rotation or oscillation may take place between the bush 7 and one or both of the sleeves. A lubricant may also be supplied to the bush and/or the appropriate sleeve to assist in assembly of the device. Preferably the lubricant has the characteristics of adhesively securing the bush to the sleeve after assembly. The resilient pad 9, may be replaced by a split ring of metal or other rigid material and springs may be used to hold the ring against the conical member. The pad 9 of rubber may be bonded to member 8, Fig. 1, or to member 13, Fig. 3.
Patent GB-375226-A (GB)
Title: Improvements in and relating to the blades of steam and gas turbines
IPC: F01D5/18
Filed: 1932-01-23
Abstract: 375,226. Turbine blades. AKT. GES. BROWN, BOVERI, ET CIE, Baden, Switzerland. Jan. 23, 1932, No. 2156. Convention date, Feb. 26, 1931. Addition to 374,377. [Class 110 (iii).] In a turbine blade as described in the parent Specification, in which the leading and trailing edges are secured to a core rigidly connected to the wheel rim, these edges are made in one piece. In Fig. 1, the cores 1 are integral with the wheel rim, and the joined edges 2 are secured by welding and interlocking parts 5. In Fig. 5, the cores 16 are screwed into the rim, and the blade surfaces 15 consist of sheets secured by welding. Passages for cooling water may be provided.
Patent GB-893529-A (GB)
Title: Improvements in or relating to flexible moulds
IPC: H01F41/12
Filed: 1960-01-21
Abstract: 893,529. Encapsulating electrical components. CONTROLS CO. OF AMERICA. Jan. 21, 1960 [July 28, 1959; Sept. 17, 1959], No. 2183/60. Class 87(2). A plurality of moulds for encapsulating bobbins 130 wound with wire 135 located on a conveyer and each comprises a fixed jaw 28, a jaw 30 rotatably supported on arcuate end members 32 and biased towards jaw 28 by springs 38, and a polytetrafluorethylene liner 50 positioned within the jaws on a silicone rubber backing 51 and secured to the top of each jaw by a clamp 52. A cam actuator along the conveyer maintains the jaws in the open position by forcing follower 48 and arm 40 downwardly so that jaw 30 is moved against springs 38, and flexible end clamps 54 hold the sides of the liner against the jaws. The component 130, 135 is inserted between the jaws and the mould is allowed to close; the tightness of the seal between the flanges of the bobbin and the liner 50 being adjusted by screw 46 (not shown). Encapsulating resin is then poured or injected into the mould. The encapsulated component is then removed and the liner burnished or buffed by pear-shaped felt buffers, Fig. 25 (not shown), rotated at high speed and using a dressing compound to close the pores of the liner and remove any remaining resin particles. The joins of the mould may be closed by a toggle system, Figs. 17-14 (not shown).
Patent GB-392132-A (GB)
Title: Improvements in starting gear for internal combustion engines
IPC: F01L13/00
Filed: 1933-01-24
Abstract: 392,132. Starting; stopping. BELLISS & MORCOM, Ltd., Ledsam Street Works, HOLLIDAY, P. A., 104, Poplar Avenue, Edgbaston, both in Birmingham, and MUCKLEY, H. E., Shaldon, Albert Road, Quinton, Worcestershire. Jan. 24, 1933, No. 2327. [Class 7 (v).] In a compression-ignition oil engine started by compressed air, in which the engine governor a is connected to the control lever h of the fuel pump i through a link c, e of variable length, a hand-wheel y serves to adjust the length of the link c, e to stop the supply of fuel, and also to open the main starting-air valve v whilst the fuel supply is withheld. The link c, e is extensible against the tension of a spring d and is connected to the lever h by a bell-crank f and a link g. The shaft of the hand-wheel i is geared by means of a pinion k and a sector l to a shaft m provided with arms n, o. The arm n serves to engage a collar p on the link c in order to extend the link and to stop the delivery of fuel. The arm o is adapted to open the starting-air valve v when an arm q on a shaft r, normally retracted by a spring t, is interposed by finger pressure on an arm s. The engine is stopped by turn. ing the wheel i into a " stop and start " position in which the link c is lifted and the fuel supply withheld ; starting may then be effected by turning the wheel to a "prepare start " position, interposing the arm q between the arm o and the air valve v by pressure on the arm s, and returning the wheel to the " stop and start " position, so that fuel is again withheld and starting air is supplied to an air timing valve x.
Patent GB-750202-A (GB)
Title: Improvements in or relating to paper feeding devices for typewriters
IPC: B41J13/12
Filed: 1954-01-28
Abstract: 750,202. Typewriters. ADLERWERKE VORM. H. KLEYER AKT.-GES. Jan. 28, 1954 [Jan. 28, 1953], No. 2648/54. Class 100 (4). Paper and card feeding arrangements.-Feeding rollers 12, 13 are mounted in separate groups side-by-side on the typewriter carriage so that each group may be individually or simultaneously moved into feeding engagement with a platen 6. Each group of feeding rollers 12, 13 is mounted on a guide-plate 8 mounted on a spring 9 adjustably secured to the typewriter carriage 2. Individual operation of the feedrollers is effected by the selective rotation of a knob on the side of the carriage which rotates a shaft 17 having angularly spaced cams 18 that press the springs 9 and guide plate with the rollers 12, 13 into feeding engagement with the typewriter platen 6. Simultaneous operation of the rollers is similarly effected by a levershifted shaft 15 with cam 16 which engage all the springs together. The mechanism may be modified so that individual or all groups of rollers are normally engaged with the platen and are disconnected from it by the rotation of shaft 17 or by separate keys.
Patent GB-166157-A (GB)
Title: Improvements in air or gas compressors for divers applications, but particularly for freezing apparatus
IPC: F25B31/00
Filed: 1917-02-23
Abstract: 166,157. Maiuri, G. Feb. 23, 1917. No Patent granted (Sealing fee not paid). Piston pumps; liquids, separating and recovering in compressing-apparatus.-In an air or gas compressor, particularly for freezing-apparatus, having two similar cylinders 1, 2 arranged opposite one another and extending from a central chamber containing the mechanism for driving the pistons 3, 4 and having its lower portion filled with oil, the upper portion of the chamber constitutes a gravity separator for the air or gas and oil discharged from the cylinders into the chamber. The cylinders 1, 2 have inlet valves 7, 8, connected by an inlet pipe 11, and delivery valves 5, 6 from which the compressed fluid flows through passages 9, 10 to the central chamber and the exhaust pipe 13, the separation of the oil from the fluid being effected by the abrupt changes of direction of flow between the ends of the passages 9, 10 and the pipe 13 and by the low velocity of the fluid in the central chamber.
Patent GB-1255134-A (GB)
Title: Improvements relating to pistons
IPC: F16J9/22
Filed: 1970-01-20
Abstract: 1,255,134. Pistons. DAIMLER-BENZ A.G 20 Jan., 1970 [23 Jan., 1969], No. 2751/70. Heading F2T. A wear ring 1 is located in a recess 7 adjoining the piston ring groove 9 adjacent the upper land 3 of the piston and is held under stress between the upper side of the groove and a piston ring 8 with its inner periphery, which is provided with indentations 2, in contact with the piston by the parts 6 between the indentations only. The wear ring 1 may be made of steel and slit at 5 to allow it to pass over the land 3 during assembly.
Patent GB-482773-A (GB)
Title: Improvements in milling or the like cutting tools
IPC: B23C5/24
Filed: 1937-01-30
Abstract: 482,773. Milling-cutters &c. BRAUN, R. Jan. 30, 1937, No. 2770. Convention date, May 7, 1936. [Class 83 (iii)] In a milling, boring, reaming, or like tool, a body 7 is provided with a number of parallel axial grooves which receive the shanks 1 of cutters having off set heads 2 fitted with hard cutting taps 3 which rest against the periphery of the tool body. The heads are recessed at 2a to accommodate chips and the rear ends of the shanks are threaded at 4 and are adjusted by nuts 5 having portions which engage in the body groove 9. Radial screws 6 secure the shanks in adjusted position. Additional grooves 9 may be provided so that cutters which have been shortened by breakage may still be utilized. In a modification (righthand side of Fig. 2) the cutter shanks may be locked by taper keys 11.
Patent GB-501176-A (GB)
Title: Improvements in or relating to the filtration of fluids
IPC: B01D39/08
Filed: 1938-01-28
Abstract: 501,176. Filtering gases. BRITISH CELANESE, Ltd. Jan. 28, 1938, No. 2796. Convention date, Feb. 5, 1937. [Class 8 (ii)] [Also in Groups I and IX] A loose filtering-medium is confined within a filter by a cloth made of yarns, filaments or fibres of glass. Glass wool, charcoal, fuller's earth, diatomaceous earth and zeolites are mentioned as filtering media. The filter is suitable for the treatment of air containing corrosive fumes, gases containing ammonia, acid vapours, chlorine or bromine vapours.
Patent GB-309254-A (GB)
Title: Improved process and plant for treating copal or similar gums
IPC: C09F1/00
Filed: 1928-01-30
Abstract: 309,254. Taelen, J. C. van der, and Soc. Coloniale Anversoise Soc. Anon. Jan. 30, 1928. Natural resins.-Pieces and nodules of copal &c. are scoured by subjecting them to sand blasts inside a turning drum. In a suitable apparatus an inclined drum 1, fitted with internal vanes or baffles to increase the rubbing &c. effects, is rotated by gears 5 and 6. Compressed air is introduced by the pipes 8 and sand from the reservoir 3 by pipes 9. The drum is provided with an internal false bottom 10, perforated to permit the sand fine gum particles and dust to pass through and so be separated from the copal nodules. Dust and fine particles are evacuated from the body of the drum by pipe 15, while the matter which passes through the bottom 10 is evacuated by a connection (not shown) to the sand reservoir 3, and is there subjected to evacuation by pipe 16 to remove copal dust &c. from the sand. The sand feed is regulated by rods 17, and a door 13 may be raised by a rope 12 and hook 14, so that the cleaned copal may be removed.
Patent GB-623362-A (GB)
Title: Improvements in or relating to melamine-formaldehyde condensation product dispersions
IPC: C08J3/03
Filed: 1945-02-06
Abstract: A cationic colloidal dispersion of a partially polymerized melamine-formaldehyde or melamine-urea-formaldehyde condensation product is prepared by forming an acidified solution of the substantially unpolymerized product in water containing 30-95 per cent of water-soluble polyhydric alcohol or partial ether thereof, the pH being 4.0-6.8 when measured at a resin solids concentration of 10-20 per cent, and ageing the solution until the particles of condensation product have dimensions within the colloidal range. Suitable polyhydric alcohol substances are glycols, polyglycols, glycerol, diglycerol and partial ethers thereof, e.g. monoethoxydiethylene glycol, sucrose, glucose, sorbitol, mannitol. As little as 0.01 mol. of strong acid, e.g. hydrochloric acid, or 0.02 mol. of a weaker acid may be used per mol. of melamine. Suitable acids mentioned are hydrochloric, acetic, chloroacetic, a -chlorpropionic, malonic, maleic, phthalic, phosphoric, sulphurous, formic or oxalic.  The solution may be aged rapidly by heating, e.g. to 80 DEG  C. and then may be stored for long periods of time if the polyhydric alcohol concentration is high.  The dispersions are particularly useful for treating paper to increase its wet strength and cellulosic textiles to anchor water-repellent substances, or to improve the ability, e.g. of cellulose fabrics to cling to surface coatings, e.g. to improve the bond between rayon cord and rubber in tyres. In examples 1, 2, 3, the ageing of solutions containing trimethylol melamine, acid and glycerol or ethylene glycol and their behaviour when diluted to 1 per cent solids after various times of ageing are described.  In example 4 a dispersion of polymerized methylol melamine in aqueous sucrose is prepared.  In example 5 diglycerol is employed as the polyhydric alcohol.  In example 6 monoethoxydiethylene glycol is employed.  In example 7 a dispersion is prepared of a melamine-urea-formaldehyde condensation product. Specifications 466,015, 468,677, 477,841, 486,519, 486,577, 527,704, and 623,361 are referred to.
Patent GB-887385-A (GB)
Title: Improvements in or relating to the preparation of carboxylic acids
IPC: C07C51/15
Filed: 1958-01-29
Abstract: A carboxylic acid is obtained by reacting a trialkyl aluminium compound, in which the alkyl groups have at least two carbon atoms, with carbon dioxide, the carbon dioxide being present in excess when the alkyl groups are straight chain alkyl groups having 2 or 3 carbon atoms and then hydrolysing the addition compound consisting of one mole of carbon dioxide and one mole of the trialkyl aluminium compound produced by the reaction.  The trialkyl aluminium compound is preferably used in the absence of a solvent therefor but it may also be used in solution in an inert organic solvent, e.g. a saturated hydrocarbon, which acts as an inert solvent.  In a modification the addition product is submitted to air oxidation or to the action of sulphur prior to the hydrolysis step and hydrolysis is then effected whereby one molecule of the carboxylic acid and two molecules of an alcohol or mercaptan are obtained.  If desired, the alkyl groups attached to the aluminium may be exchanged for other alkyl groups by reacting the trialkyl aluminium compound with an olefin prior to the reaction with carbon dioxide.  It is also possible to achieve such exchange after the carbon dioxide treatment and before submitting the product to air oxidation or to a reaction with sulphur, in order to obtain an alcohol or a mercaptan which is different from those which correspond to the radicals of the initial trialkyl aluminium compound.  Suitable reaction temperatures are between -10 DEG C. and 100 DEG C.  Examples are given for the production of propionic acid from triethyl aluminium; 3-methyl-butanoic acid from tri-isobutyl aluminium; a mixture of C6 to C8 straight chain fatty acids from a mixture of trialkyl aluminium compounds rich in C5, C6 and C7 alkyl groups; 3-methyl-butanoic acid and isobutyl alcohol from triisobutyl aluminium the carbon dioxide addition product being oxidised with air prior to the hydrolysis step; and 3,6-dimethyl-heptanoic acid from tri(2-5-dimethylhexyl)-aluminium, some 2,5-dimethylhexane being so removed as by-products.  In each case hydrolysis is effected by treating with a 10% sodium hydroxide solution followed by acidification, e.g. with hydrochloric acid.