baber/WOPTO huggingface dataset:
Patent GB-1477795-A (GB)
Title: Electrolytically removing metal ions from a solution
IPC: C02F1/28
Filed: 1975-02-25
Abstract: 1477795 Removing metal ions electrolytically; electrolytic cells INDUSTRIAL FILTER & PUMP Mfg CO 25 Feb 1975 [25 Feb 1974] 7826/75 Heading C7B Metallic ions in a solution are removed by passage thereof through a cathode which comprises carbon particles which have been caked porously on a conductive foraminous support by passage through the support of a liquid entraining the particles. Steam-activated C powder may be used whereby phosphates and organic materials are also removed, by adsorption. The cell used may comprise planar hollow perforated screens 18 each surrounded by a carbon fibre bag (23), Fig. 2 (not shown) and communicating internally with outlet pipe 15. Bar 19 supports these and the anodes 24, which are also attached to 15. Bar 19 is cathodic and pipe 15 and the cell are anodic, the electrode supports being suitably insulating. A vibratory device 22 serves for removing deposited carbon. Further carbon may be deposited to build the layer up during electrolysis, there being then a time-controlled potentiometer 33 in the D.C. supply to maintain constant cell voltage. The recovered carbon may be burned to recover metal values. Alternatively, concentric electrodes are used, the inner of which are hollow cathodes.
Patent GB-932425-A (GB)
Title: Improvements in or relating to pneumatic tyres
Inventor: GOUGH VERNON ERIC
IPC: B60C9/22
Filed: 1959-03-06
Abstract: 932,425. Pneumatic tyres. DUNLOP RUBBER CO. Ltd. Jan. 14, 1960 [March 6, 1959], No. 7841/59. Class 144 (2). A pneumatic tyre has a tread reinforcement comprised of a layer of inextensible parallel circumferential cords and a separate layer of inextensible parallel cords which extend in a sinuous or zig-zag fashion generally either transversely or circumferentially of the tread. The reinforcement may include an additional layer of parallel inextensible cords, either sinuous or non-sinuous and extending either transversely or circumferentially. The cords may be of steel and the tyre carcase may comprise a layer of parallel radial steel cords, or a plurality of symmetrically cross-laid parallel textile cord plies. The sinuous or zig-zag cords may have a wavelength of between 1 and 3 ems. and a double amplitude in the range 1 to “ the wavelength.
Patent GB-1430503-A (GB)
Title: Automatic telephone systems
IPC: H04Q3/00
Filed: 1974-02-21
Abstract: 1430503 Automatc exchange systems PLESSEY CO Ltd 7 Jan 1975 [21 Feb 1974] 7855/74 Heading H4K In a telecommunication exchange employing a relay switching network each subscriber's line circuit includes a transistor which over its emitter base path supplies holding current for the cross-point relays providing a connection thereto and which controls in its collector circuit a relay arranged to clear local potentials, applied at the line circuit to the speech wires, when any normal incoming or outgoing subscriber-connection is established. As described, the switching network SSN is as in Specification 1,386,321. A connection is established from a subscriber SL through network SSN to a supervisory unit SV then through a route switching network RSN to a further supervisory unit thence through a subscriber switching network to the called subscriber. The network is controlled as in Specification 1,383,107 by a stored program control unit incorporating a memory map. A selected path is set up through the network by progressively less negative markings applied via contacts HMC, 1M, 2M and 3M to the hold wire H. A transistor TR2 responds providing holding current via its emitter base path, the hold wire and diode DH to the cross-point relays A, B and C. TR2 also enables cut-off relay K which opens its contacts K1 and K2, removing potentials applied to the line at the line circuit. These potentials are used for example prior to establishment of a connection for off-hook detection. A scanner operating as in Specification 1,325,194 scans collector terminals SP of line circuit transistors TR1 each of which is normally non- conductive but is switched to conduction if the line is looped by earth bias applied via K1 and that loops C1, R3 and R4 constituting a filter to prevent false operation due to mains frequency noise on the line. As described in Specification 1,393,156 the supervisory units may be used for incoming or outgoing calls, battery feed during a connection is provided via contacts AN1, AN2 and line split contacts CA1, CA2, auxiliary access network ASS and auxiliary circuits connected to the latter perform various tests &c. Some tests require the A, B and C cross-point relays of a path through network SSN to be held while the relay K of the involved line circuit is released. To enable this the marker MKR includes a test access circuit TA with individual contacts RK for each line circuit, the latter providing holding potential to the hold wire and releasing TR2 and relay K.
Patent GB-978633-A (GB)
Title: Polyolefin blends
IPC: C08L23/12
Filed: 1962-02-28
Abstract: Blends of normally solid branched chain polymers of ethylene of density 0.910 to 0.970, which have been made by free-radical polymerization techniques, and polypropylene in an amount of 3 to 5% by weight of the blend, wherein the polypropylene has a melting point of at least 135 DEG C., a density of 0.870 to 0.920, and a heptane insoluble fraction of at least 70%, are used for coating wire and cables, and making shaped articles such as films and bottles.  The polypropylene is made by using Ziegler-Natta type catalysts.  The ethylene polymer may be polyethylene, or a copolymer of ethylene with the comonomers mentioned in Specifications 497,643, and 579,844, in particular copolymers of ethylene and vinyl acetate.  Specifications 471,590 and 626,155 also are referred to.
Patent GB-854331-A (GB)
Title: Improvements in oil well derrick structures and methods of erection thereof
IPC: E21B15/00
Filed: 1958-03-11
Abstract: 854,331. Raising derrick masts. MOORE CORPORATION, L. C. March 11, 1958 [July 30, 1957], No. 7880/58. Class 78 (4). The mast 3 of an oil well derrick is raised about a hinged connection with a base 2 by means of a cable 8, secured at one end to a ginpole 1 and at the other end to a travelling- block 7 and passing over sheaves 9, 10, 11, the block 7 being drawn up the mast by means of a cable 5 and draw-works 4. When the block 7 reaches the top of the mast, a link 12 is connected between the gin-pole and the mast to support the mast in an inclined position while the block 7 is returned to the lower end of the mast and the cable 8 is shortened, when the cycle is repeated to bring the mast to its erected position. The block 7 is suported from a carriage 20, while it is being lowered, to prevent its swinging out of the mast.
Patent GB-1023016-A (GB)
Title: Manufacture of tubes
Inventor: WAKAR ROMUALD
IPC: G01M3/18
Filed: 1963-02-27
Abstract: 1,023,016. Testing for leaks in tubes and cables. STANDARD TELEPHONES & CABLES Ltd. Feb. 27, 1963, No. 7900/63. Headings G1N and G1S. Testing for leaks in tubes and cables during manufacture comprises submerging a portion of a tube containing a gas in a liquid which partially fills a closed vessel reducing the pressure of gas in the remainder of the vessel below that of the tube gas and moving the tube longitudinally so as to submerge successive portions of the tube. The tube 1 is passed through a closed vessel 2 partially filled with a liquid 8 e.g. trichlorethylene. A tubular electrode 3 with a tapered bore surrounds the tube and is connected by a lead 9 to a resistance bridge another lead 11 from which is connected to a contact roller 10 bearing on the tube. An air pump 4 reduces the pressure in the space above the liquid 8. On a modification the electrode 3 is close, except for holes to allow the tube to slide through and a nozzle above the level of the liquid 8. Air bubbles leaking from the tube pass through a restriction in the nozzle to vary the electrical resistance thereof.
Patent GB-546228-A (GB)
Title: Improvements in and relating to elastic fluid turbines
IPC: F01D25/00
Filed: 1941-06-24
Abstract: 546,228. Valves. BRITISH THOMSONHOUSTON CO., Ltd. June 24, 1941, No. 7943. Convention date, June 28, 1940. [Class 135] [Also in Group XXVI] The inner casing of the high pressure part of a turbine is separated from the outer casing by an intermediate pressure steam space and the parts are arranged so that the outer casing can be removed without dismantling the admission valves 30 and byepass valve 23. Each operating rod 43 is detachably coupled to the valve stem 42 by a split cylinder 57 embracing a head 65 on the valve stem and enclosed by a sleeve 61. The split cylinder is coupled to the operating rod by a cross pin 62. The whole is enclosed in a casing 54 bolted to the outer turbine casing. The valve stem and the operating rod slide in long guides each provided by two bushes entered from opposite ends in their mountings 47 and 53. Prior to removing the outer turbine casing, the pin 62 is exposed by removing screw plugs 63, 64 and is knocked out. The operating rod with the parts 53, 54 can then be removed and the valves remain free of the outer casing. Steam is admitted to the chest 16 by a pipe welded to a thin conical disc on the outer casing and entering a packed gland in the inner casing.
Patent GB-990690-A (GB)
Title: Cathode structure for use in electron discharge devices
IPC: H01J23/04
Filed: 1962-03-01
Abstract: 990,690. Discharge tubes. WESTERN ELECTRIC CO. Inc. March 1, 1962 [March 14, 1961], No. 7962/62. Heading H1D. A cathode structure, particularly for use in a travelling-wave tube, comprises a slotted annular support 61 surrounding, but spaced from, a tube 31 which contains a heater 43 and is closed at one end by an electron-emissive cap 32, a plurality of stressed wires extending from the slots in support 61 to both ends of tube 31. The wires may be of a low-thermal-conductivity alloy to minimize cathode heat-loss. As shown, emissive cap 32, the enlarged ends 34 of tube 31 and support 61 are each formed with two pairs of diametrically-opposed slots, each pair of slots receiving one of two wires which are looped around tube 31 and support 61. The tension in these wires may be adjusted by winding a further wire circumferentially around support 61. The wires may be brazed to support 61 and are secured to tube 31 by washers 48, 51. The assembly of support 61 within outer cylindrical shell 52 is also described in detail.
Patent GB-391086-A (GB)
Title: Improvements in and relating to india-rubber springs
IPC: F16F1/44
Filed: 1931-10-29
Abstract: 391,086. Indiarubber springs. SPENCER, MOULTON, & CO., Ltd., G. and SPENCER, A., 2, Central Buildings, Westminster. Oct. 29, 1931, No. 8016/33. Divided on 390,555. [Class 108 (iii).] In spring units comprising metal foundation or supporting plates with indiarubber elements projecting from the opposite faces thereof and united through perforations in the plate the rubber elements 3 are of general sector shape and are disposed radially around a circular supporting plate 1, the elements 3 having side walls so shaped that on compression to a predetermined degree the said side walls 14 assume a radial disposition and the side walls of adjacent elements may mutually support each other. The elements 3, as shown, have their side walls curved inwardly and their ends are provided with rounded corners. Reference is made to Specification 390,555 in the Complete Specification and to Specification 326,376, [Class 108 (iii), Springs &c.], in the Provisional Specification.
Patent GB-1511435-A (GB)
Title: Vehicle braking system
IPC: B60T11/224
Filed: 1976-03-01
Abstract: 1511435 Brake booster arrangements DAIMLER-BENZ AG 1 March 1976 [1 March 1975] 08083/76 Heading F2F  To increase the hydraulic transmission ratio on failure of servo pressure in a hydraulic braking system a device 20 has control piston 2 biased by a spring 3 in opposition to servopressure (at 1) to direct fluid from a master cylinder port 9 to an actuator outlet 12 either by way of an interposed stepped piston 19 on failure of the servo-pressure (as shown) to increase the transmission ratio or by way of a by-pass passage 10, 4, normally. In Fig. 1 displacement of the control piston 2 rightwards by servo pressure actuates pushrods 4 and 5 to open valve 6 and close valve 7, bypassing the stepped piston. In an alternative construction (Fig. 2) normally fluid passes from an inlet port 35 by passages 36, 37, 38 and past a one-way seal 41 to an outlet 43. On servo-pressure failure the valve 34 is closed and fluid enters the cylinder chamber 29, but on initial displacement of the piston 44 the transmission ratio is unchanged as fluid from the chamber 39 passes round the seal 41 as its volume decreases. When the piston seal 48 passes an orifice 49 into the passage 38 the chamber 39 is vented around annular chamber 50 and through a port 52 to a reservoir and the transmission ratio is determined by the piston end areas.
Patent GB-1132495-A (GB)
Title: Photographic camera
IPC: G03B15/04
Filed: 1966-02-24
Abstract: 1,132,495. Photographic cameras. EASTMAN KODAK CO. Feb.24, 1966 [July 12, 1965], No. 8105/66. Heading G2A. A photographic camera has a socket assembly 9, Fig. 3 for use with a multi-flash lamp attachment 18, Fig.1, the assembly being movable from an inoperative position within the camera housing to an operative position which is accessible for insertion or removal of an attachment 18. The assembly, 9, Fig.3, is vertically slidable along ribs (19) Fig.2 (not shown) and a slot 6, Fig.1.
Patent GB-595429-A (GB)
Title: Compound nail
IPC: F16B13/12
Filed: 1945-03-31
Abstract: 595,429. Wall &c. plugs. WARDMAN. C.B. March 31, 1945, No. 8139. [Class 89 (i)] A compound nail and wall &c. plug comprises a tubular member 10 with a head 18 to engage the part 15 to be secured and a solid point with saw cuts 11. An inner member 12 with a head 13 and tapered end 14 serves, on driving into place, to expand the point of the part 10 and prevent withdrawal. The part 10 may be serrated externally.
Patent GB-1152009-A (GB)
Title: Process for Preparing Methane-Containing Gases
Inventor: HUMPHRIES KELVIN JAMES
IPC: C07C1/02
Filed: 1966-02-24
Abstract: 1,152,009. Making combustible gas. GAS COUNCIL. 21 Feb., 1967 [24 Feb., 1966], No. 8257/66. Heading C5E. A gas containing a high proportion of CH 4  is made by passing a gas mixture containing H 2 , CO, CO 2 , steam and at least 25 vol. per cent CH 4  over two methanation catalysts in series, part at least of the steam being removed from the gases between the two catalyst stages. The first catalyst is at 200‹ to 450‹ C., and the second is in a temperature range which is lower than the exit temperature of the gases leaving the first stage. The original gas mixture may be one made by the catalytic steam reforming of light hydrocarbons, e.g. as described in Specification 820,257. The gases are cooled between the stages and condensate is removed, only enough steam being left in to prevent carbon deposition on the second catalyst. Further cooling and methanation stages may succeed the second stage. A suitable catalyst is active nickel-alumina, e.g. as described in Specification 969,637, and the process may be operated at up to 100 atmospheres pressure. The catalysts may be fluidized beds, and one or both may be cooled, e.g. as described in Specification 1,152,008.
Patent GB-548427-A (GB)
Title: Improvements in surgical bandages, binders for babies, and the like
IPC: A61F13/00
Filed: 1941-07-01
Abstract: 548,427. Abdominal belts &c. ANDREWS, M. B. July 1, 1941. No. 8265. Addition to 538,854. [Class 141] [Also in Group VI] The ends of the surgical bandage, babies binder, and the like of the parent Specification are adjustably fastened together by one or more straps connected to one end, threaded through one or more loops at the other end and folded back and retained in that position, both folds of the strap or straps lying entirely on the outside of the bandage where it or they pass through both loops; the loops are formed by strips of material stitched to the bandage. As shown two strips 5 on the end 2 are passed through loops 6, 7 on the end 4 and folded back and retained by engaging them in loops 8, 9 and the end 2.
Patent GB-1093743-A (GB)
Title: Improvements in or relating to sealing strips
IPC: E06B3/40
Filed: 1966-02-24
Abstract: 1,093,743. Seal strips. GLACES DE BOUSSOIS. Feb. 24, 1966 [Feb. 26, 1965], No. 8269/66. Heading E1J. A sealing strip particularly for the pivot carrying sides of a reversible sashless window 1 comprises a base length 11 having a tenon strip 10 extending therefrom and secured in a groove in a frame by ribs 10 and one or more tongues 12 extending centrally from the base length away from the tenon 10 and a sealing lip 13a, 13b, extending from one or both edges of the base towards the tongue or tongues 12, so that when the strip is secured in the window frame and the window is closed, the tongue(s) 12 is bent over resiliently in the closing direction of the window in sealing contact with the entire edge surface of the window and the lip 13a, or 13b is resiliently in contact with the confronting surface of the window. The lips 13a, 13b extend from continuous elbows 14 at the edges of the base and each of the elbows has a groove 15 along the outer corner for facilitating detachment of a portion at a cut 16, 17 of the strip to accommodate the hinges 2 of the window 1.
Patent GB-312728-A (GB)
Title: Improvements relating to glass
IPC: C03C1/00
Filed: 1928-03-19
Abstract: 312,728. Chance Bros. & Co., Ltd., Gould, C. E., Hampton, W. M., and Martin, H. S. March 19, 1928. Production of metal.-Relates to glass of the kind that is transparent to ultraviolet rays, and to the tendency of such glass to lose part of its power of transmitting the rays. The invention consists in making a glass which is less subject to the defect in question by using ingredients which substantially avoid the occurrence in the finished glass of dissolved gaseous oxides. For this purpose, a batch may consist of silica, borax, and a powdered metal, such as zinc, aluminium, or tin, which combines readily with oxygen and acts as a reducing agent. Specification 8704/07 is referred to.
Patent GB-1263730-A (GB)
Title: Improvements in or relating to valves
IPC: F16K27/04
Filed: 1969-02-17
Abstract: 1,263,730. Valves. AMOT CONTROLS CORP. 17 Feb., 1969 [21 Feb., 1968], No. 8391/69. Heading F2V. [Also in Division G4] Valve comprises a modular assembly of at least two body sections such as intermediate sections 10a and end sections 10b assembled in end-to-end relation about a longitudinal axis and providing an internal axially extending valve chamber. Each section has radial openings such as 119 to 719 from the chamber to the exterior adapted to form flow passages, e.g. by receiving connectors 14, or to be plugged as by plugs 13. Each section also is recessed externally to provide opposed shoulders perpendicular to the axis. The sections are clamped together by spring clips 15 engaged over the shoulders.  As disclosed, these parts are adapted to be made up into different valve assemblies, in conjunction with other interchangeable parts. As shown in Fig. 4, a seven-section assembly operating a double-acting jack, has a pressure inlet 419, work ports 319, 519, exhaust ports 219, 619, and pilot pressure ports 119, 719. The sections are sealingly assembled over rings 131- 631, e.g. of injection moulded resiliently compressible wear resistant low friction thermoplastic. Tapered peripheral surfaces 29, 30 of the rings are engaged by tapered surfaces 27, 28, preferably of greater angle, of recesses 25. The valve member comprises similar interfitting sections 63-67 as shown, carrying resilient sealing washers 116-616. Flexure of these washers is allowed by tapered grooves 38 in the sections, Fig. 7 (not shown). The connectors 14 and plugs 13 have tapered ends 48, 49 constituted by annular walls and are mountable in pressed sealed engagement with correspondingly tapered bores in the body sections. The connectors and plugs are interchangeable. Each has an annular flange 53 providing two shoulders such that the connector or plug can be knocked in with a predetermined force by a punch tool (56), Figs. 8 and 9 (not shown), having a claw 58 to engage the outer shoulder. The flange 53 is also arranged so that the claw can be engaged under it and the connector or plug levered out of the hole by the tool. Fluid logic applications.-In addition to actuation by pilot pressure at opposite ends, the valve is manually operable by actuators 32, 33 in the end sections 10b. It is stated that the control arrangements provide the facility for logical, e.g. AND/OR operations, where the separate actuations represent separate signals.
Patent GB-769243-A (GB)
Title: Process for the manufacture of non-dusting and non-caking fertilizers containing potassium potassium salts
IPC: C05D1/00
Filed: 1955-03-23
Abstract: Non-dusting fertilizers, capable of storage and pourable, are prepared by mixing a dry fine-grained or dusty fertilizer with a moist potassium salt obtained by purifying a naturally occurring potassium salt by flotation with a flotation agent which comprises one or more aliphatic amines derived from natural fats, the moist potassium salt being still contaminated with traces of the flotation agent.  According to examples (1) a crude potassium salt containing 19,5 per cent sylvite, 52,2 per cent rock salt, 27,3 per cent kieserite and 1 per cent anhydrite, is purified by flotation with fatty acid amines such as octadecylamine whereby a crude potassium chloride fertiliser containing about 50 per cent K2O, made up of 82 per cent sylvite, 2 per cent kieserite and 6 per cent rock salt is obtained.  This is dehydrated by centrifuging to a 4-5 per cent moisture content and this moist salt is added to dry potassium fertiliser salt obtained from the same crude potassium salt in the flotation process, the dry and moist salts being mixed in a 1 to 1 ratio so that the final product has a 2-2 1/2 per cent moisture content.  (2) A crude potassium chloride fertiliser salt obtained by flotation as in example (1) and dehydrated by centrifuging to about 3-5 per cent moisture content is mixed with dry finely ground potassium fertiliser salt also obtained as in (1) in a ratio of 3 to 1 to produce a fertiliser containing 40 per cent K2O and 2-3,5 per cent moisture.  (3) A moist potassium chloride fertiliser salt obtained by flotation as in (1) and dehydrated to a 4-5 per cent moisture content is mixed in a ratio of 4 to 6 with dry Thomas meal containing 15-16 per cent citrate soluble phosphoric acid, so p  that a potassium salt-Thomas meal mixed fertiliser with 18-20 per cent K2O and about 10 per cent citrate soluble phosphoric acid and 1,5-2 per cent moisture content is obtained.