baber/WOPTO huggingface dataset:
Patent GB-1424804-A (GB)
Title: Porous diaphragms
IPC: H01M50/489
Filed: 1972-02-04
Abstract: 1424804 Porous plastics laminates IMPERIAL CHEMICAL INDUSTRIES Ltd 23 Jan 1973 [4 Feb 1972] 5351/72 Heading B5N [Also in Divisions C3 and C7] Laminates comprise a number of sheets of porous polytetrafluoroethylene calendered to each other and optionally to a sheet of polymer e.g. polypropylene, gauze. In the examples, aqueous dispersions of polytetrafluoroethylene were mixed with water, titanium dioxide and maize and potato starch, and the mixture was stirred with a paddle-mixer to form a paste: the paste was then (i) dried and then mixed with water to form a dough, (ii) mixed at a high shear rate to form a dough, or (iii) mixed with a maleic anhydride/methyl vinyl ether copolymer as thickening agent and NaOH and stirred to form a dough; the dough was then calendered to form a sheet which was cut into pieces and the pieces were laid over each other to form a laminate which was calendered again and the resultant sheet again cut into pieces and laminated; this calendering and laminating was repeated a number of times with and without rotation of the sheet through 90 degrees in the horizontal plane before calendering; finally a polypropylene gauze was laminated on to the above sheet by calendering and the laminate was soaked in aqueous hydrochloric acid to remove the starch and thereby produce a porous sheet suitable for use as a diaphragm in electrolytic cells. Other fillers, removable materials, &c. are mentioned.
Patent GB-1216708-A (GB)
Title: Suspension bridge cable anchorage
IPC: E01D19/14
Filed: 1968-02-02
Abstract: 1,216,708. Anchoring suspension bridge cables. BETHLEHEM STEEL CORP. 2 Feb., 1968 [8 Feb., 1967], No. 5430/68. Heading E1B. An anchorage block 19 for a suspension bridge cable 11 is cast around an assembly of parallel or splayed tubes 23 welded between a perforated rear bearing plate 27 and a perforated front plate 53, each cable strand 17 passing 'through a respective tube 23 and having an end fitting 25. Prior to casting, the assembly is supported on a foundation 21 by frameworks 59. The end portions of adjacent tubes 23 are interconnected by webs, and an intermediate perforated plate 56 may be provided. In a modification the tube and plate assembly are formed in upper and lower halves secured together on site. The end fitting 25, Fig. 8, of each strand 17 may be of pouredzinc type and reacts against the bearing plate 27A through slotted shims 29 and a two-piece locating assembly 35, the tube 23 being filled with grout or plastics foam through tube 48 after its front end has been plugged. Each strand 17 may be of helical- or parallel-wire form and may be positioned in the front end of its tube 23 by nylon or zinc fairleads. Each tube 23 may be keyed in the concrete by welded-on studs.
Patent GB-539983-A (GB)
Title: Improvements in and relating to the casting of metal ingots, and ingot molds for use therein
IPC: B22D7/06
Filed: 1940-03-26
Abstract: 539,983. Ingot moulds. TRIGGS, W. W. (Valley Mould & Iron Corporation). March 26, 1940, No. 5438. [Class 83 (i)] An ingot mould is provided with indentations in its inner surfaces to produce on the ingot quickly freezing projections of such form that they act, during the cooling and shrinking of the ingot 8, to centre it and keep a substantially uniform air space between it and the mould. The projections may take the form of ribs 9, Fig. 3, which also support the solid skin formed during cooling and avoid cracks therein. The ingot may have separate vertical and horizontal ribs or be covered with a trellis-like arrangement of ribs 9, 10 or 6, Fig. 11. The height of the ribs should not exceed 1/15 of the lateral dimension of the ingot at the point in question. In a modification the number of separate projections 30, Fig. 14, are formed. The inclination of the lower side of each rib or projection should be inclined, e.g. at 25 degrees to 35 degrees, to the walls to permit it to leave its groove 31 or indentation easily as the ingot shrinks and this inclination may be greater nearer the base. The central projection 18 in each row on each side of a rectangular ingot 8 has a rectangular section as shown in Fig. 15, while the other projections are inclined laterally as well as vertically to allow both movements relative to the mould 1 during cooling If a corrugated ingot 42, Fig. 20 is desired, projections 18 may be formed on the crests or, preferably, in the valleys of the ingot as shown. U.S.A. Specification 2,018,762 is referred to.
Patent GB-1472250-A (GB)
Title: Quadraphonic sound reproduction
IPC: H04S3/00
Filed: 1974-05-01
Abstract: 1472250 Quadraphonic apparatus PLESSEY CO Ltd 1 May 1974 [3 Feb 1973] 6452/73 Heading H4R In a quadraphonic system, the high frequency components (e.g. above 100-200 Hz) of the rear channel signals are reproduced through respective rear channel equipment whilst the low frequency components are added to the respective front channel signals for reproduction through front channel equipment. In this way the rear channel amplifiers are of lesser power and the loudspeakers of narrower frequency range. The fillers, mixers and rear amplifiers may be incorporated in a turntable plinth or form one unit of a kit also including a pair of loudspeakers and a decoder for connection to a two-channel stereo system.
Patent GB-1196103-A (GB)
Title: Improvements relating to Electron Guns
Inventor: ANDERSON KENNETH
IPC: H01J37/24
Filed: 1968-02-02
Abstract: 1,196,103. Automatic temperature control systems. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. March 26, 1969 [Feb. 2, 1968], No. 5481/68. Heading G3R. An electron beam apparatus has a photosensitive device PD sensitive to light from a filament F reflected at M through a lens L, which device controls the filament current to maintain the filament temperature constant. The device may respond to a wide or a limited range of frequencies such as visible or infrared radiation. Preferably the light from the filament is restricted e.g. by an apertured screen S so that only light from tip region is incident on the device. The reflector M should be located below the anode in a free field space. The apparatus may be an electron microscope.
Patent GB-575583-A (GB)
Title: Improvements in or relating to angle modulated carrier wave receivers
IPC: H03J3/14
Filed: 1944-03-27
Abstract: 575,583. Frequency modulation. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. March 27, 1944, No. 5592. Convention date, March 27, 1943. [Class 40 (v)] A discriminator circuit for frequency modulation receivers is arranged so that a tuning indicator of the cathode ray type may be connected directly to it. The circuit is of the type in which the signal rectifiers are fed with equal voltages from the primary of a pair of coupled timed circuits, and also with equal and opposite voltages from the secondary of the coupled pair. The rectifiers 3, 4, are fed through blocking condensers 10, 11, from the ends of the secondary circuit 9, 9<1>, the centre point 9<11> of the inductance 9 being earthed. The rectifiers 3, 4 are also fed from the primary circuit 8, 8<1>, via the condensers 17, 18. The anode 22 of the tuning indicator tube 20 is connected to the primary circuit 8, 8', and the control electrodes 24, 25, to the ends of the secondary 9, 9<1>. The shadow angles in the two controlled sectors of the tube are equal when in tune, while modulation of the carrier is indicated by " fluttering " of the shadows. Specification 489,094 is referred to.
Patent GB-162268-A (GB)
Title: Improvements in or relating to electric discharge tubes
IPC: H01J17/06
Filed: 1921-02-18
Abstract: 162,268. Naamlooze Vennootschap Philips' Goeilampenfabrieken. April 20, 1920, [Convention date]. Vacuum tubes.-To facilitate the starting of a lamp, magnesium, beryllium, or alloys thereof are combined mechanically with, or alloyed with the usual material of the electrodes, for instance iron or aluminium. Deposition of the magnesium or beryllium on the bulb may be checked by partly surrounding these metals by the other materials of the electrodes. For this purpose the electrodes may be capshaped, or, as shown, may consist of interwound iron-wire helices 5, 6 attached at their free ends to wires 13, 14 supporting pieces 15, 16 of the auxiliary metal. The rare-gas or other filling may be at such a pressure, and the electrode distance of such magnitude, as to require a minimum starting pressure, which may be 110 volts alternating. Specifications 17036/14 and 17646/14 are referred to. According to the Specification as open to inspection under Sect. 91 (3) (a) the scattered metal may be intercepted by a mica screen; also thallium may be used as an auxiliary metal. This subject-matter does not appear in the Specification as accepted.
Patent GB-753033-A (GB)
Title: Improvements in sewing machines
IPC: D05B73/00
Filed: 1954-02-26
Abstract: 753,033. Sewing - machines. UNION SPECIAL MACHINE CO. Feb. 26, 1954 [Feb. 26, 1953], No. 5647/54. Class 112. [Also in Group XXXII] A sewing-machine has torsional - vibration dampers (see Group XXXII), disposed in the driving connections to its stitch-forming and workfeeding elements. A combined hand - wheel and drive-belt pulley 51 embodies a torsional-vibration damper 140, and is rigid with a shaft 44 which is operatively connected to a looper 60 and feed-dog 71. The work-feeding mechanism may be of the construction described in Specification 687,812. A sprocket 42 on the shaft 44 is connected by a toothed belt 43 to a driven sprocket 30 on a shaft 27 which is operatively connected to a needle-bar 33. The shaft carries torsional-vibration dampers 120 and 80 at its right and left-hand ends respectively. As an additional measure in suppressing vibrations, the belt 43 may carry an additional belt (Fig. 16, not shown), overlying it, and in frictional contact therewith. A jockey pulley, adjustable in position, engages the outer belt. Alternatively (Fig. 17, not shown), plain pulleys may be disposed respectively side-by-side with the sprockets and may carry a belt in parallel with the toothed belt. A jockey pulley bears on the plain belt. In a further construction (Fig. 18, not shown), respective jockey pulleys, laterally adjustable, are positioned in contact with the outer surface of the belt 43 at four positions at which antinodes form during the running of the belt. The damper 140 may be replaced by another construction which provides a resilient connection between the pulley 51 and the shaft 44. In a flat-bed sewing-machine of the construction described in Specification 687,812, an oscillating or rock-shaft used to operate a ruffling blade or a cover-thread-laying finger, is provided with a damper of a tubular form which gives added stiffness to the shaft. Specifications 743,637 and 753,032, [Group XXXII], also are referred to.
Patent GB-692743-A (GB)
Title: Improvements in or relating to optical objectives
IPC: G02B17/08
Filed: 1951-03-09
Abstract: 692,743. Optical objectives. WREATHALL, W. M., and TAYLOR, TAYLOR, & HOBSON, Ltd. March 4, 1952 [March 9, 1951], No. 5742/51. Class 97 (i). A corrected objective comprises a front refracting member air-spaced from a meniscus rear member having its spherical outer surfaces concave to the front and its front surface centrally coated and rear surface annularly coated so as to be reflecting, so that light entering the objective through the front member will be refracted at the curved outer zone of the front surface of the rear member, reflected successively by the said annular and control reflecting portions and will emerge by refraction at the curved central zone of the rear surface. Numerical data are given for one example of the objective shown in which all the surfaces of the front member are spherical, for one example in which the surface R<SP>1</SP> is aspherical and of the form x = a 2 y<SP>2</SP> + a 4 y<SP>4</SP> + ... , and for one example in which the two elements of the front member are cemented together, the rear surface of this doublet being aspherical. Specifications 541,650 and 541,652 are referred to.
Patent GB-1149842-A (GB)
Title: Sulphonated diamines and their use
Inventor: BURROWS HAROLD GEORGE
IPC: C08G69/42
Filed: 1966-02-10
Abstract: 1,149,842. Sulphonated diamines. IMPERIAL CHEMICAL INDUSTRIES Ltd. 18 Jan., 1967 [10 Feb., 1966], No. 5898/66. Heading C2C. [Also in Division C3] The invention comprises sulphonated diamines of the formula in which R denotes an alkylene radical of 2-12 carbon atoms, a cycloalkylene radical or a group of the formula R<SP>1</SP> and R<SP>2</SP> denote aromatic nuclei, M denotes hydrogen or a metal atom, m and n denote integers of 1-6, and x, y and z denote 0, 1 or 2, provided that their sum is at least 1. Specific instances of the radicals R, R<SP>1</SP> and R<SP>2</SP> are given. The compounds are prepared from the unsulphonated diamines by standard sulphonation processes. Typical examples describe the sulphonation of N,N<SP>1</SP>-di-(benzyl)-hexamethylenediamine, N,N<SP>1</SP> - di - (benzyl) - m - xylylenediamine and N,N<SP>1</SP> - di - (γ - phenyl - n - propyl)- hexamethylenediarnine. The products are useful as reagents in the manufacture of polyamides (see Division C3).
Patent GB-291519-A (GB)
Title: Improvements in or relating to oil immersed electric fuses
IPC: H01H9/10
Filed: 1927-03-03
Abstract: 291,519. Hope, V. March 3, 1927. Fusible cut-outs.-Two fuses F<1>, F<2> in series between contacts D, E are kept under tension by springs d<6> acting between the fuse terminals d<4> and insulating blocks d<3> supporting the contacts D, E.
Patent GB-981974-A (GB)
Title: Screwdown mechanisms
Inventor: ALLEN LESLIE
IPC: F16H1/16
Filed: 1963-02-14
Abstract: 981,974. Toothed gearing. DAVY & UNITED ENGINEERING CO. Ltd. Jan. 14, 1964 [Feb. 14, 1963], No. 6005/63. Heading F2Q. [Also in Division B3] A rolling mill screwdown mechanism comprises a pair of screw jacks 12 each being drivably connected with a worm-wheel 13 or 14 and a worm gear 16 or 17, the worm gears being driven together to adjust the position of a roll of the mill, and each worm gear being axially adjustable independently of the other gear by means of gear couplings 20 and 22, and having a helical thread varying in thickness along its length. The shaft 18 of worm gear 16 is mounted in bearings 18A and 18B in a casing 15, the bearings being fixed to the shaft against abutments 25 by lockable nuts 26. A sleeve 28 having inwardly and outwardly extending flanges 29 and 30 surrounds the bearing 18A and is held in position by bolts 34. When excessive wear between the worm gear 16 and worm-wheel 13 occurs, the gear 16 is moved axially by altering the number of shims 35 between the sleeve 28 and casing 15, until a portion of the gear 16 where the helical thread is of appropriate thickness engages the wormwheel, the bearing 18B being slidable in a bore 36 to permit such adjustment. The worm gear 17 is similarly adjustable.
Patent GB-1285471-A (GB)
Title: Improvements in two-stroke internal combustion engines for chainsaws
Inventor: DAVISON FRANK
IPC: F02B25/00
Filed: 1969-02-04
Abstract: 1285471 Two-stroke crank-case compression engines F DAVISON 29 April 1970 [4 Feb 1969] 6055/69 Heading F1B When the piston A is at the bottom of its stroke a charge from the crank-case flows between the gudgeon pin bosses F and the piston skirt, and through ports H, J in the skirt opposite the ends of the gudgeon pin E and cylinder ports, to the cylinder B above the piston. Pairs of cylinder ports H, J communicate with each skirt port, Figs. 2 to 4 (not shown). The ports H, J may be circular, rectangular or oval and formed during casting or by drilling or milling.
Patent GB-635191-A (GB)
Title: Improvements in vehicle road wheels
IPC: B60B21/08
Filed: 1947-03-29
Abstract: 635,191. Vehicle wheels. ALVIS, Ltd., KEMP, A., and BRADLEY, L. March 29, 1947, No. 6079/49. Divided out of 621,945. [Class 144 (i)] A truck wheel comprises two flanged rings 19, 20 shaped to receive a pneumatic type, one of the rings being extended laterally to provide an integral brake-drum 27. The rings are formed with flanges 21a bolted to a hubflange 22. Specification 621,945 is referred to.
Patent GB-310607-A (GB)
Title: Improvements in or relating to combined lifting- and trans-porting-jacks
IPC: B64F1/22
Filed: 1928-02-27
Abstract: 310,607. De Havilland Aircratt Co., Ltd., and Brant, A. J. Feb. 27, 1928. Hand-trucks.-A lever lifting and transporting jack for use with aircraft comprises a lever-like frame mounted on or secured to an axle carrying a pair of wheels, the frame having means for engaging an eyebolt &e. on the tail of the aircraft. A pair of wheels 10 are mounted on an axle 11 carrying a lever-like frame having a long arm 13 provided with a handle 16 and a short arm or crutch 12. The frame may be braced uy a cross member 15 and web 14. The crutch is provided with a hook 17 adapted to engage an eyebolt on the aeroplane tail. In operation the appliance is positioned so that the hook engages with the eyebolt and the handle is depressed so that as the crutch swings into the vertical position the tail of the aeroplane is raised.
Patent GB-273655-A (GB)
Title: Improvements in wheels for automobile vehicles and the like
IPC: B60B23/04
Filed: 1927-03-04
Abstract: 273,655. Zipper, E., and Zipper. W. July 1, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Detachable - rim attachments to wheels; tyre attachments to rims.-A detachable tyre-carrying rim i of the split-ring type, is formed of thin metal so that under load it is distorted into jamming engagement with the flanges b, d of the fixed rim a, the flanges j of the rim i being of such shallow depth that the tyre edges are also forced into engagement with the flanges of the fixed rim. The rim i may be formed with a convexity n (or a series of grooves) which becomes flattened when the tvre is under load. The flanges b, d may be recessed to take the flanges j. The flange b is shown secured by a split-ring f co-operating with registering grooves in the rim-parts a, b.
Patent GB-963301-A (GB)
Title: Scaffolding
IPC: E04G1/14
Filed: 1962-02-19
Abstract: 963,301. Scaffolding. J. JANUS. Feb. 19, 1962 [March 9, 1961], No. 6276/62. Heading E1S. Scaffolding comprises two dimensional unit frames e.g. H-frames arranged vertically and horizontally. The ends of the side members 11, Figs. 4 and 5 of the H-frames have offset tongues 13 adapted to be engaged with one another when one frame is mounted on another each tongue 13 engaging an opening in the other upright, formed between the other tongue 13 and an internal radial web 17. The tongues 13 have hooks 14, Fig. 6, so that the vertical frames can be connected by frames arranged horizontally by engaging the hooks with sockets 15 on the sides of the members 11.
Patent GB-981554-A (GB)
Title: Improvements in fuel injection pumps
IPC: F02M41/14
Filed: 1961-02-21
Abstract: 981,554. Fuel injection pumps. V. D. ROOSA. Feb. 21, 1961 [Feb. 29, 1960], No. 6296/61. Heading F1A. The rotary distributing part 26 of a fuel injection pump has diametrically opposite slots 48 which are connected to the pump cylinder and communicate alternately with equiangularly spaced fuel inlet ports 46 and outlet ports 58 leading to the injectors, the ports 58 being angularly arranged so that no two can communicate with the slots 48 at one time and such that they receive fuel alternately from each of the slots 48. The number of pump deliveries is twice the number of outlet ports 58 and the rotor runs at half engine speed (twostroke cycle). Specification 656,906 is referred to.
Patent GB-1030381-A (GB)
Title: Can extrusion machine
IPC: B21C23/03
Filed: 1964-02-14
Abstract: 1,030,381. Extruding; metal working presses. MINSTER MACHINE CO. Feb. 14, 1964 [Nov. 26, 1963] No. 6307/64. Headings B3H and B3P. A press, particularly for forming can bodies by impact extrusion has two or more slides 18, 20 actuated by a crank-shaft 32 whose crankpins 32, 34 are displaced angularly from each other, whereby the slides reach the ends of their working strokes in succession. The crankpins are displaced by 8-10 degrees and the crank-shaft is driven by a motor 38 through clutch 40 and brake 42. Each slide has an anvil 64 adapted to engage the heads 62 of a pair of punches, 44 mounted in a rotary turret 46 which carries eight punches Fig. 3 (not shown), whereby four cans are extruded for each revolution of the crank-shaft whilst four previously extruded cans 79, Fig. 4 (not shown), are stripped from the other punches and discharged into shoots 70. Surrounding each punch is a stripper ring 56 carrying rollers 76 running in a stationary cam track 74 which both effects the stripping operation and returns the punches to their upper positions. Spring-biased portions 80 of the track are yieldable at the extrusion stations to permit the punches 44 to backwardly extrude blanks 92 within die recesses 68. The blanks are fed from a magazine 90, Fig. 5 (not shown), by a reciprocating slide 96 actuated through lever 98, cam groove 102, gearing 106, 108 and Geneva mechanism 110, 112 driven from the crank-shaft. Turret 46, Fig. 1, is indexed through 90 degrees between press strokes by mechanism 50 driven through shaft 52 and gearing 54 from the crank-shaft. Slides 18, 20 are secured to their connecting rods 22, 24 by adjustable eccentric pins 120, Fig. 8 (not shown ), which are rotatable by individual motors 124 for adjusting the end positions of the punches and hence the thickness of the can bottoms. This adjustment may be made manually or automatically by actuation of a feeler contact 126, Fig. 9 (not shown), operating a relay controller timer. The adjustment may also be effected in dependence upon the load on the connecting rods. Instead of a rotary turret 46, a reciprocating type of indexing mechanism may be used.
Patent GB-1000894-A (GB)
Title: Process of elasticizing structures of woollen fibres
IPC: D06M11/55
Filed: 1962-02-19
Abstract: Structures, e.g. yarns and fabrics, made from woollen fibres are elasticised by impregnating them with a reducing agent and then drying, both steps being conducted under conditions such that the structures are free to contract by at least 10% in at least one direction to provide structures having an elasticity in at least one direction of at least 10%.  Suitable reducing agents are metallic formaldehyde sulphoxylates, thioglycollic acid and its water-soluble salts, mercapto ethanol, and alkali metal borohydrides, sulphites, bisulphites, metabisulphites and hydrosulphites.  The reducing agent may be applied as an aqueous solution containing 0.01-5% by weight of the reducing agent and up to 50% by weight of a swelling agent, e.g. urea, guanidine compounds, formamide, acetamide, thiourea, phenol and lithium chloride, bromide and iodide, at temperatures from room temperature to the boiling point of the solution.  Longitudinal and torsional strains introduced into the structures during the manufacturing process, e.g. in picking, carding, drafting, weaving or wet or dry.  Finishing procedures, may be relieved by immersing the structures in water at a temperature between 65 DEG F. and the boil either before or after treatment with the reducing agent.  The structures may be dried under tension-free conditions at room temperature or by working them, e.g. in a tumble dryer, at 120 DEG -180 DEG F.  Yarns may be fixed in a given configuration by treating them while coiled on a rod in such a way as to permit them to contract by at least 10% during the treatments with the reducing agent and to relieve strain and during drying. Jersey-like or puckered effects may be produced on fabrics by treating fabrics containing yarns having differing degrees of strain or containing synthetic or natural fibres, e.g. polyamide, polyester, acrylic, cotton or cellulose ester fibres, in the warp or filling.