baber/WOPTO huggingface dataset:
Patent GB-1345915-A (GB)
Title: High conductivity high strength copper alloys
IPC: C22C9/02
Filed: 1971-04-19
Abstract: 1345915 Copper based alloys OLIN CORP 19 April 1971 [13 April 1970] 23624/71 Heading C7A A high conductivity high strength Cu base alloy contains in wt per cent:- 0À2-4À0% Fe 0À2-2À5% Co 0À01-0À5% P 0À1-1À0% Sn and/or 0À1-1À0% Mg the balance being essentially Cu and the Fe + Co content being from 1-5%. Ingots of the alloy after casting are either hot rolled at a temperature between 700 and 1000‹C., preferably being held for at least 30 minutes at this temperature, or heat-treated at a temperature in this range. Afte: this, as described, cooling to room temperature takes place at any desired rate owing to the alloy's insensitivity to cooling rates, followed by cold rolling to a reduction up to 96% in one or more passes. According to the invention, the alloy is, after the hot rolling or heat treatment, thermally aged at 250-575‹C for between 1 hour and 50 hours this ageing possibly also serving as interanneal or final anneal when cold rolling is used. Strip or batch annealing techniques may be used.
Patent GB-283443-A (GB)
IPC: D01H5/74
Filed: 1927-09-08
Abstract: 283,443. Etablissements Motte- Dewavrin Soc. Anon. June 2, 1927, [Convention date]. Rollers and roller heads.-In a spinning or like machine having top rollers comprising loose bosses 1, Fig. 1, mounted on self-aligning bearings 4, the rollers are guided to limit their oscillations to displacements in the common plane of the axis of the shaft 2 and that of the bottom rollers. A coaxial sleeve 5 is mounted within each boss 1 by a rigid ball-bearing 6 and is formed with guiding notches or grooves 7 engaging a tongue 8, Fig. 2, in the shaft head 3, which latter is set in the usual guide in the machine frame, Fig. 3.
Patent GB-532087-A (GB)
Title: Improvements in brackets for supporting curtain rails
IPC: A47H1/144
Filed: 1939-08-17
Abstract: 532,087. Curtain-rail supports. JOHNSON, F. A. L. Aug. 17, 1939, No. 23697. [Class 52 (v)] A support for a runner rail 2 comprises a forked member 6 secured to the window frame &c. and provided with an open sided slot 10 to receive one side of the rail flange, and a catch member 9 with side arms 15 pivoted to the fork by bent tongues 17 and formed with stops 20 to engage and hold the other side of the rail flange. The catch member preferably has a finger piece 19 adapted to snap below the rail flange, the arms of the catch being bent to give them resilience. The parts may be made from stamped blanks. As a modification the forked member may have projections engaging grooves in the rail.
Patent GB-1452978-A (GB)
Title: Process for making stetched polymeric film
IPC: B29C55/00
Filed: 1974-03-29
Abstract: 1452978 Stretching multi-ply film webs CELANESE CORP 29 May 1974 [30 May 1973] 23745/74 Heading B5B More than two plies of unstretched thermoplastic polymeric film are simultaneously stretched to form the same number of plies of stretched unruptured thermoplastic polymeric film. Suitably the film is a non-open-celled film which is first cold stretched and then hot stretched to make the film mioroporous. Polypropylene film is exemplified.
Patent GB-342739-A (GB)
Title: Improvements in or relating to the production of cellulose esters and cellulose ester products therefrom
IPC: C08B3/00
Filed: 1929-08-02
Abstract: The process of the parent Specification is modified by treating cellulosic material prior to esterification with hydro-halide acid in quantity less than 2 per cent on the weight of the cellulose. The treatment may be carried out simultaneously or separately with acetic acid or other organic acid or ferric, stannic, cobalt, nickel, manganese, or copper halide treatment.  As initial materials, cotton or wood pulp, bamboo, esparto, and other material from which lignin, pentosan, and resin have been removed, as in sulphite-, soda-, or sulphate pulp, may be used. It is preferable to subject these materials to an alkaline purification as described in Specification 249,173, [Class 2 (ii), Cellulose &c.].  The pretreatment with hydro-halide acid is preferably carried out at ordinary temperature or with cooling. When this pretreatment is associated with a pretreatment with halide salt, the latter may be carried out in the presence of acetic acid or other organic acid and at raised temperature.  For the subsequent acetylation, processes employing metallic halides are particularly suitable especially when a catalyst containing iron in the ferric state in excess of that equivalent to the chloride or bromide combined with iron is employed.  The excess of ferric iron may be introduced by adding ferric oxide or hydroxide to the esterifying mixture preferably already containing ferric chloride or bromide; or the iron may be introduced in the form of a basic salt; or alkali may be added to the mixture containing ferric chloride or bromide.  The excess of iron may be present only during a part of the esterification and if the acidity of the esterifying mixture is reduced at different stages of the esterification, the temperature may be successively raised.  The esterification may be carried out so that the ester is produced in solution, or it may be carried out in suspension in liquid diluents, or effected with the aid of esterifying agents in vapour form.  The cellulose esters obtained may be subjected to ripening at ordinary or raised temperatures.  They may be utilized in their primary esterification or ripening solutions or after separation therefrom, for the production of artificial silk, films, plastic masses, moulding powders, and moulded articles.  In an example, cotton linters are sprayed with 1 per cent by weight of hydrochloric acid dissolved in acetic acid, and are stirred at intervals for 2 hours at ordinary temperature.  The pretreated material is then mixed with glacial acetic acid, acetic anhydride, and ferric chloride, the temperature being allowed to rise gradually to 40 DEG  C. at which stage freshly precipitated ferric hydroxide is added and the acetylation is continued at 40-60 DEG  C. until solution is complete. Specifications 309,201, 312,095, 312,096, [all in Class 2 (ii), Cellulose &c.], 342,738, and 342,740 also are referred to.
Patent GB-859494-A (GB)
Title: Improvements in or relating to nuclear reactors
IPC: G21C3/36
Filed: 1947-08-28
Abstract: 859,494. Nuclear reactors. GRIFFITH' A. A. Aug. 30, 1948 [Aug. 28, 1947], No. 23855/47. Class 39(4). The fuel of a nuclear reactor comprises permeable cellular bodies fabricated of metal in sheet form. In one example, Fig. 1, the fuel comprises ribbons of uranium 235, the ribbons being 5 cm. wide and 0À005 cm. thick and corrugated transversely, lengths of the corrugated ribbons being laid upon one another and brazed, welded, or sintered into a rigid block of a height of several feet. These blocks may be used in the fast reactor shown in Fig. 2, the blocks being connected together in pairs by cover plates 15 formed with eyes 16 for inserting and removing them from the reactor. Stiffening webs of corrugated sheet metal extend across the reactor, parallel to the plane of Fig. 2 to subdivide the space within the reactor and to give edge support to the blocks ; apertures 14 in the webs equalise the pressure in the reactor. The reactor is cooled by helium which passes from apertures 19 in a base flange past the outside of the reactor, through an aperture 5 in the top of the reactor to the reactor core and thence through an outlet at the bottom. The fuel elements should be designed to secure laminar flow of the gas coolant. The fuel need not be for a fast reactor and need not be of enriched uranium. The fissile material need not be the main or sole constituent of the fuel but may be contained as metal or compound within sheet metal or supported as a coating.
Patent GB-990516-A (GB)
Title: Improvements in electron tunnel emission devices
IPC: H01L27/00
Filed: 1961-07-03
Abstract: An electroluminescent device producing infra-red radiation comprises non-superconductor and superconductor layers spaced 2 to 1000 <\>rA apart by an insulating layer.  At temperatures below the superconductor transition temperature with suitable bias electrons tunnel from the nonsuper conductor to the excited level of the superconductor and then fall to the filled band with emission of a photon of infra-red radiation. The radiation frequency is determined by the forbidden energy gap which is a function of temperature and magnetic field in the region of the transition temperature.
Patent GB-168910-A (GB)
Title: Sound-conducting tubes
IPC: G10K11/22
Filed: 1921-09-08
Abstract: 168,910. Baron, H., (Signal Ges.). Sept. 8, 1921. Speaking-tubes-Tubes of considerable length and large diameter for the conduction of sound, have a tapered portion 2, Fig. 1, at the ear end the length of this portion being of the order cf three times the wave length of the sound used. In an alternative arrangement, Fig. 3, a small flat sound-box 5, forming a resonating chamber with its internal space turned to the sound frequency, is connected to the main tube. There may be a diaphragm 6 also tuned to the sound frequency, or the chamber may be connected to the main tube by a rigid wall having a small opening. The sound is conducted to the ear by means of a flexible pipe 3 or by an opening in the chamber.
Patent GB-1513214-A (GB)
Title: Gas turbine engine geometry control
IPC: F02C9/16
Filed: 1976-06-10
Abstract: 1513214 Gas turbine engines; controlling turbines; centrifugal compressors GENERAL MOTORS CORP 10 June 1976 [23 June 1975]  23992/76 Headings F1C, FIG and FIT A gas turbine engine for propelling a vehicle has variable compressor and turbine geometry and includes provision for varying concurrently the flow areas through the compressor and turbine as a function of engine power level request during normal load-powering operation of the engine and for maintaining the flow area through the compressor at a minimum while increasing the flow area through the turbine to obtain load-braking operation of the engine. In the single shaft engine shown, a radial flow compressor 8 receives air via vanes 19 which are adjustable to vary the effective flow area and the degree of swirl imparted to the air. From the compressor, the air passes via a diffuser 20 with adjustable vanes 24 to a scroll 22 and thence via a recuperator to combustion apparatus 23 which supplies combustion gases to plenum 26 for flow to turbine 12 via a nozzle 27 equipped with adjustable guide vanes 30, see Fig. 2. The vanes 19, 24 are controlled by interconnected rings 35, 43 of which ring 35 is coupled to control ram 48 via arm 61, a link 59 including a disengageable coupling 64, and arms 52-56. A bias spring 62 moves the rings 35, 43 to positions closing vanes 19, 24 when the coupling is disengaged. The vanes 30 are controlled via arms 78 by a ring 67 coupled via arm 66 to a shaft 55 rotatable with arms 54, 56. The coupling 64 is controlled by a solenoid 118 and its condition is monitored by a switch 112. The position of the ram piston is monitored by a transducer 63. Control system: A power request transmitter 122 supplies an engine control signal to a fuel controller 124 and to an engine variable geometry (EVG) scheduling device 127 whose output is related to the engine control signal as shown in Fig. 5 and normally applied via low-wins gate 155 to the ram 48. The coupling 64 is disengaged upon solenoid 118 being energized via AND gate 160 when the control signal calls for less than 12À5% full power and the EVG is below 10% full travel. The coupling is re-engaged, when the control signal subsequently calls for more than 12À5% full power, only after the ram has been fully retracted by virtue of receiving a signal from AND gate 148 via NOR gate 156 and low-wins gate 155. If the control signal calls for less than 12À5% full power and coupling 64 is still engaged, the ram is fully retracted by virtue of receiving a signal from AND gate 152 via gates 156, 155 so that the load is taken off the latch to facilitate its disengagement by the solenoid.
Patent GB-223382-A (GB)
Title: Improvements in screening and grading apparatus
IPC: B07B1/54
Filed: 1923-09-26
Abstract: 223,382. Raahauge, S. A. Sept. 26, 1923. Feeding-devices for granular and like materials. -In sifting-apparatus for granular material, the feed-hopper J is provided with a hinged adjustable discharge tray K which is adapted to be vibrated by rollers C loosely mounted in brackets b on a rotating shaft B. The rollers may act on bars k carried by the tray. In a modification, the device shown in Fig. 3 for vibrating the screen may be adapted for shaking the tray. This device consists of a number of plates H loosely mounted between guide-bars G, G<1> and acted on by the rollers C. Separate devices may be used to vibrate the screen and feed-tray, or both may be actuated by the same device.
Patent GB-627941-A (GB)
Title: Improvements in or relating to supporting and control surfaces for aircraft
IPC: B64C13/00
Filed: 1947-08-29
Abstract: 627,941. Controlling aircraft. PIATTI, S. V. Aug. 29, 1947, No. 24011. Convention date, Dec. 27, 1939. [Class 4] The area of an aircraft supporting or control surface is increased by an extension flap hinged adjacent to the trailing edge of the surface and rotatable from a retracted position in which it is folded forwardly under the surface to an operative position in which it is unfolded rearwardly, the extension flap being sheltered in its movement by a downwardly and rearwardly inclined screening flap pivoted forward of the extension flap and normally folded rearwardly under the surface. The extension flap 2, Fig. 1, hinged at 3 to the wing 1 is in contact with an overlapping screening flap 4 hinged to the wing at 5. Simultaneous movement of both flaps to the positions shown in Figs. 3 and 5 is obtained by linking them by rods 10, 13, to a common pilot's control lever 6. In a second embodiment (Fig. 7, not shown) the extension flap only is connected to the pilot's control lever, the screening flap being held in contact with the extension flap by a spring. In a third embodiment (Fig. 8, not shown) the extension flap is mounted on a plurality of arms pivoted to the trailing edge of the wing to enable the flap to act as a slotted flap when in the extended position. In a fourth embodiment (Figs. 9, 10, 11, not shown) the extension flap is increased in area by forming it from two pivoted overlapping sections in the form of an overlapping screen. To counteract the pitching effect caused by the additional increase in area at the trailing edge of the wing two leading edge overlapping slotted flaps mounted on spanwise tubular members actuated by a number of substantially horizontal bellcranks and control rods. In a fifth embodiment (Figs. 12, 13, not shown) the extension flap consists of two component flaps, the hinge points of which are set close together at the trailing edge of the wing. When unfolded rearwardly they can be located at close together or spaced-apart positions for take-off or landing respectively. When applied to control surfaces such as ailerons (Figs. 14, 15, not shown), the screening flap is spring-loaded and the extension flap is actuated by a cable control mechanism coupled to the control mechanism for the wing extension flaps to effect simultaneous actuation. When separately mounted on each side of the fuselage, each flap is mounted on a torque tube coupled to a central torque tube to which are connected the control rods or cables.
Patent GB-475442-A (GB)
Title: Improvements in or relating to synchronous alternating current machines
IPC: H02P9/14
Filed: 1936-09-02
Abstract: 475,442. Synchronous dynamo-electric machines. TIMBERLAKE, E. J. Sept. 2, 1936, No. 24023. [Class 35] A synchronous machine is compounded by means of a field winding energized through a rectifier in parallel with a choke carrying the main current. In the form shown, the field winding F is energized partly from the commutator C on the main machine and partly through the rectifier V in parallel with the choke K in series with the slip rings S of the machine and resistances R, R1, R2, R3 may be provided. The winding energized through the rectifier and choke may, however, be an additional field winding.
Patent GB-383251-A (GB)
Title: Improvements in cups, basins, jugs and like articles or receptacles
IPC: A47G19/22
Filed: 1932-08-29
Abstract: 383,251. Basins &c. POLLOPAS, Ltd., 2, Charterhouse Square, London, and EATON, M. M., 18, Brearley Street, Birmingham. Aug. 29, 1932, No. 24046. [Class 66.] A basin or similar article of hollow-ware formed of translucent synthetic resin has one or more portions of its wall made thinner than the remaining part or parts so as to impart a varying degree of translucency to the wall and to create a scintillating effect. A cup may be formed, as shown, from urea moulding powder with a smooth curved inner surface and an outer surface formed with diamond or other shaped facets 2. The thinnest central portions of the facets may be a little less than 1/16 of an inch in thickness.
Patent GB-971433-A (GB)
Title: Process for improving the adhesion of backings for photographic emulsions
IPC: B05D5/08
Filed: 1963-06-17
Abstract: A process for substrating film backings made of polyethylene terephthalate by an application of one or more adherent layers containing a solvent for the polyester film backing, is characterized in that the backing is given high-frequency treatment before the application of the or each layer.  The high frequency treatment may be in the frequency range of from 10 to 500 kc./s. and may be given immediately before the application of the or each layer.  Suitable solvents are phenols, halogenated phenols e.g. p-chlorophenol, chloral, chloral hydrate and halogenated fatty acids and trichloroacetic acid.  The film backing may be run over an earthed roller and experience an electric discharge from a high frequency electrode.  The substrating solution may contain gelatine, nitrocellulose, the copolymer of maleic acid anhydride and styrene, and the copolymer of maleic acid anhydride and vinyl methyl ether.
Patent GB-1153560-A (GB)
Title: Improved Cellulose Triacetate and process for its production
IPC: C08B3/22
Filed: 1968-05-21
Abstract: 1,153,560. Precipitating cellulose triacetate. SOC RHODIACETA. 21 May, 1968 [22 May, 1967; 5 April, 1968], No. 24138/68. Heading C3A. Cellulose triacetate which contains at most 150 p.p.m. by wt. of combined sulphuric acid and which has a dissolution factor, measured as described in the Specification, of at least 90 in 10 minutes, is obtained by precipitation from an acetic gum produced with sulphuric acid as catalyst, using as precipitant water or dilute acetic acid under conditions such that the liquid phase at the end of the precipitation has an acetic acid content of not more than 65% by wt., displacing with an aliphatic ether the impregnation liquid of the precipitated triacetate, and drying the resulting product. The " dissolution factor " is a measure of solubility in a 90/10 (by wt.) methylene chloride/methanol mixture. The water or aqueous acetic acid may be displaced by an intermediate liquid, soluble in the said ether, prior to treatment therewith, e.g. MeOH, or an aqueous acetic acid of appropriate concentration. Advantageously the precipitated triacetate is washed with aqueous acetic acid to remove all sulphuric acid prior to further treatment. Specified ethers are ethyl and isopropyl ethers.
Patent GB-1142850-A (GB)
Title: Mining machines
Inventor: MELLOR GORDON
IPC: E21D9/00
Filed: 1965-06-08
Abstract: 1,142,850. Mine roadway-excavating machine. COAL INDUSTRY (PATENTS) Ltd. 3 June, 1966 [8 June, 1965], No. 24208/65. Heading E1F. In a mine roadway-excavating machine having pick-armed, endless chains 10 circulating about a boom 2 projecting beyond the chassis 1 of the machine the vertical swing of the boom 2 about a horizontal axis 15 on the chassis is such that free end of the boom can be brought below the level on which the machine stands for cutting away of mineral from said level down to the required floor of a roadway being formed by the machine.
Patent GB-1074381-A (GB)
Title: Method of protecting inflammable materials spread over water against fire and of purifying water polluted by organic materials
IPC: C02F1/68
Filed: 1964-06-11
Abstract: Combustible and non-combustible oils on the surface of water are submerged by applying a composition of a surface-active agent and a halogenated organic liquid of SG greater than 1.3 and a BP of greater than 100 DEG  C. selected from halogenated butadienes, bromochlorinated, brominated or chlorinated derivatives of butanes pentanes, pentenes, cyclopentene, cyclopentane and cyclopentadiene, perchloroethylene, and 1,2,4-trichlorobenzene, mixtures of same and mixtures with solid trichlorobenzenes.  Reference has been directed by the Comptroller to Specification 954,797.ALSO:A liquid fire-prevention composition for spreading on combustible materials on the surface of water comprises a surface active agent and a halogenated derivative of butadiene or brominated, chlorinated, or bromochlorinated derivatives of butanes, pentanes, pentenes, cyclopentane, cyclopentene and cyclopentadiene, perchloroethylene or 1,2,4-trichlorobenzene or mixtures of or with solid trichlorobenzenes with SG exceeding 1.3 and BP greater than 100 DEG C.  Other known extinguishing agents may be added as may perfumes.  Reference has been directed by the Comptroller to Specification 954,797.
Patent GB-534973-A (GB)
Title: Improvements in or relating to television receivers
IPC: H04N5/64
Filed: 1939-08-24
Abstract: 534,973. Television. COOPER, A. H. Aug. 24, 1939, No. 24326. [Class 40 (iii)] [Also in Group XX] Ambient illumination is provided around a television receiver comprising a cathode-ray tube viewed directly or through a mirror to prevent eye-strain without detrimentally illuminating the cathode-ray screen. For this purpose lamps are provided behind the receiver and the switching of these lamps may dim lamps in the room, or lamps are provided in the receiver and louvres provided for controlling the illumination. In another arrangement, Fig. 2, glass rods 6, 7, 8 scored with lines 4 are arranged around the screen 2 and lighted by lamps 9, 10 11 at their ends to produce a circular gleam. In still another arrangement, Fig. 3, a glass plate 12 with a circular hole 13 for the screen has a ground front face and a silvered and blackened inner edge 16 and is lighted by lamps 14, 15 at the outer edges. Specification 460,508, [Group XX], is referred to as a device for producing an illumination surround for a screen on which an image is projected.
Patent GB-822775-A (GB)
Title: New derivatives of phosphoric acid triamide and thiophosphoric acid triamide, and the production thereof
Inventor: ARNOLD HERBERT
IPC: C07F9/564
Filed: 1957-07-31
Abstract: The invention comprises compounds of the general formula <FORM:0822775/IV (a)/1> wherein X is an oxygen atom or a sulphur atom.  They may be obtained by reacting a phosphoric acid or thiophosphoric acid compound which contains an N-bis(b -chloroethyl) radical and two halogen atoms, e.g. chlorine, attached to the phosphorus atom with twice the molar quantity of ethyleneimine in the presence of an agent, e.g. triethylamine, which combines with hydrohalic acid. Examples are given for the production of compounds in which X is p  oxygen and sulphur respectively.  The products are stated to have cytostatic effects.  The bis - (b  - chloroethyl) - phosphoric acid amide dichloride used as starting material may be obtained from phosphorus oxychloride and bis (b -chloroethyl)-amine hydrochloride.