baber/WOPTO huggingface dataset:
Patent GB-452647-A (GB)
Title: Improved diaphgram for use in autotype copying processes
IPC: G03F5/12
Filed: 1935-02-25
Abstract: 452,647. Photographic diaphragms. GROVES, W. W., 30, Southampton Buildings, Chancery Lane, London.-(I. G. Farbenindustrie Akt.-Ges.; Frankfort-on-Main, Germany) Feb. 25, 1935, No. 21789/36. Divided out of 452,578. [Class 98 (i)] A diaphragm for use in the autotype copying process con sists of annular zones of different light trans missions, having one maximum of transmission at the centre and a second maximum nearer the periphery. In the form shown in Fig. 1, the diaphragm consists of concentric rings of different transparency and, in the form shown in Fig. 2, of concentric rings of apertures of different diameter. The diaphragms may be used in the process described in Specification 452,578.
Patent GB-439030-A (GB)
Title: Improvements in spring contacts for electrical fittings specially applicable to fuse fittings
IPC: H01H85/20
Filed: 1935-08-01
Abstract: 439,030. Switch contacts. DENNIS, G. P., Hooton Park, Wirral, Cheshire. Aug. 1, 1935, No. 21798. [Class 38 (v)] [See also Group XXXVI] A socket for a plug coupling comprises a rigid part A and a spring bridge piece B. Members 4<1> are formed on the bridge to prevent its leaving the rigid member.
Patent GB-1497575-A (GB)
Title: Magnetic heads
IPC: G11B5/33
Filed: 1975-05-21
Abstract: 1497575 Magnetic heads PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 21 May 1975 [24 May 1974] 21801/75 Heading G5R A playback magnetic head comprises a substrate 1, Fig. 3, bearing a magnetic flux-sensitive element in the form of a thin film 4, on only one side-wall 6, Fig. 4 (not shown), of a groove 2 extending in a major surface of the substrate, and electrical leads (not shown) connected to the flux-sensitive element. The head is made by etching the groove 2 in a substrate 1 of sapphire or a carbide, or silicon, the latter allowing the groove side-walls to be normal to the major surface. An auxiliary layer 3 of Al or Cu, 500 to 10,000 Angstroms thick is then vapour deposited at a first angle (α), Fig. 2 (not shown), to the substrate major surface onto areas thereof at both sides of groove 2 and onto a first sidewall 5 thereof, a 1000 Angstrom thick layer 4 of magnetic flux-sensitive material, such as magnetoresistive Ni-Fe, being thereafter vapour deposited at a second angle # to the substrate onto the areas shown in Fig. 3. The auxiliary layer 3, and the parts of layer 4 thereon, are then removed by etching leaving only the part of layer 4 on a second side-wall 6 of groove 2, to which layer 4 electrical leads are then connected. This method produces a magnetoresistive element 4 with an accurately defined height (h), Fig. 4 (not shown), e.g. of 5Œ 0À5 microns, without the need for grinding the substrate major surface, height (h) being dependent on the angle # and the location of edge 7. The method may be used to form a magnetoresistive element on the outer side-wall 11, Fig. 5, of the central web of a generally U-shaped groove 8, a lacquer layer 10 then being provided to cover the groove part between lines C and D. The remaining part of the groove 8 outward of lines C and D is then filled up to the major surface of the substrate with Au which contacts the magnetoresistive element and which is connected at E and F to an external circuit by "bean leads" or a "plated through hole" technique. The part of groove 8 between C and D may be filled with SiO.
Patent GB-1372025-A (GB)
Title: Lamp assembly
IPC: H01R33/06
Filed: 1971-10-01
Abstract: 1372025 Lighting device J A ORAM 1 Oct 1971 [7 Oct 1970 15 Dec 1970] 21837/74 and 21838/74 Heading F4R [Also in Division H2] The description is similar to that of the parent Specification 1,372,024, but the claims relate to a plug-in lamp assembly.
Patent GB-532882-A (GB)
Title: Improvements in or relating to the purification of electrolyte solutions and the preparation of pure salts therefrom
IPC: B01D15/04
Filed: 1939-07-27
Abstract: 532,882. Purifying metal salt solutions. OCEAN SALTS (PRODUCTS). Ltd., and ADAMS, B. A. July 27, 1939, No. 21847. [Class 1 (iii)] [Also in Group I] In a process for purifying electrolyte solutions and preparing pure salts therefrom comprising contact of the solution with an organic ionexchange material, the activity of co-efficients of the electrolytes in the solution are previously adjusted so that either the ions constituting the impurity or the ions to be isolated are absorbed by the base-exchange material to the exclusion of the others. The adjustment may be made by diluting the solution or concentrating it by evaporation, by treating it chemically to remove some of the ions constituting the impurities, or by the addition of a concentrated solution or a solid containing the same ions as those to be isolated. Organic ion-exchange materials as described in Specifications 450,308 and 450,309 may be used. An example is described in which a solution containing sodium, magnesium and calcium ions is diluted and passed through a hydrogen-exchange material, the magnesium and calcium ions being absorbed so that a pure sodium salt can be prepared from the effluent. When, however, the solution is concentrated or a sodium salt added the magnesium and calcium ions are in the effluent and a pure sodium salt can be prepared from the exchange material. In another example, a solution containing magnesium and calcium ions is diluted and passed through material containing exchangeable magnesium ions, an effluent being obtained which contains only magnesium ions.
Patent GB-1464058-A (GB)
Title: Coin telephone sets
IPC: H04M17/02
Filed: 1975-05-21
Abstract: 1464058 Coin box telephones SOC ANON FRANCAISE DES APPAREILS AUTOMATIQUES TAXIMETRES - TAXIPHONES 21 May 1975 [24 May 1974] 21848/75 Heading H4K A coin set utilizes a series of D-type flip-flops and a corresponding series of adders interconnected therewith for producing coin collect signals in accordance with metering pulses received over the line during a call. The set may be programmed to produce a different coinvalve-collect signal in respect of the initial linepolarity reversal indicative of reply by the called party. Coins are collected in reverse order to their denominational value up to an amount sufficient to cover the current call charge. Warning tones to an operator indicative of the fact that a coin box is being used are provided, these tones being inaudible to the user of the set. Further tones may be provided to the user to indicate that further coins must be deposited. Details of the various logic circuits and of the particular binary code used thereby are claimed.
Patent GB-775028-A (GB)
Title: Improvements in connector devices for connection to articles or for connecting articles together
IPC: F16L41/14
Filed: 1954-07-27
Abstract: 775,028. Cotters etc.; stud-and-socket fastenings. TAYLOR, W. J. July 27, 1954 [July 29, 1953], No. 21867/54. Classes 44. 89 (1) and 89 (2). [Also in Groups X, XIV, XXIII and XXVIII] A connector-device comprises a member 29, Fig. 5, having locking- elements 21 slidable transversely thereof and urged to project out of the member by a spring 22 or a rubber-element. Means such as a pin 28 engage the spring to prevent loss of the parts. The member may be screwed to receive a nut, and may be hollow to form a pipe-connection (see Group XXVIII), in which case the locking- elements slide in a transverse tube. An article is connected to the device by passing the member through a hole in the article, the elements retracting into the member and then extending therefrom to engage the rear face of the article, and subsequently tightening the nut against the article, a washer being interposed where a liquid-tight joint is required. The member may have a pointed end 40, Fig. 12, for piercing the article. Elements may be provided at both ends of a member 30, Fig. 7, which may be used to connect tubes &c. together. In other arrangements the member is an eye-bolt, a handle (see Group XXIII) or a water-spraying nozzle. Furniture tubes 45, Fig. 17, are interconnected by member 29 having two sets of elements 21, there being a rubber grommet 46 between the tubes.
Patent GB-442012-A (GB)
Title: Improvements in and relating to methods of producing cellulose masses
IPC: H01B3/18
Filed: 1934-07-26
Abstract: Cellulosic material, particularly regenerated cellulose, is subjected to treatment with an aqueous dispersion of a polymerized acrylic acid compound to bring it into a swollen condition, and is then dried.  In an example, a sheet of paper is caused to absorb a 20 per cent aqueous colloidal solution of a polymerized acrylic acid compound and dried.  The dried products are non-brittle and are particularly suitable as carriers for impregnating media (oils and compounds) in the building up of insulating-materials.  Reference has been directed by the Comptroller to Specification 387,736.
Patent GB-642923-A (GB)
Title: Improvements in trip-free electric circuit breakers
IPC: H01H71/10
Filed: 1947-08-08
Abstract: 642,923. Automatic circuit - breakers. HEINEMANN ELECTRIC CO. Aug. 8, 1947, No. 21964. Convention date, March 27, 1942. [Class 38 (v)] In a trip-free circuit-breaker the tripping mechanism is counterweighted to prevent accidental tripping due to shocks or dynamic action when the circuitbreaker is mounted in or on a moving vehicle or object. The figures show the application of the invention to a circuitbreaker of the construction described in Specifications 21963/47 and 22246/49, (both open to inspection under Sect. 91) in which the contacts 1, 6 are closed by means of a handle 9 acting through latched toggle links 10, 11, and may be tripped open by the armature 24 of an electromagnet 29, 30 acting by means of a finger 25 on the latch. The armature 24 with its finger 25 is dynamically balanced by means of counterweights 28, Fig. 3, which are rigidly fixed to the shaft 27 on which the armature is fixed. The latch has a counterweight 18, Fig. 5, to balance the weight of the latch arm 20 which is engaged by the finger 25.
Patent GB-1500057-A (GB)
Title: Ultracentrifuge
IPC: B01D59/20
Filed: 1975-05-22
Abstract: 1500057 Gas centrifuge ASEA AB 22 May 1975 [23 July 1974] 22083/75 Heading B2P An ultracentrifuge for separating a gaseous, e.g. isotope, mixture into its components comprises a rotor in the form of a hollow cylindrical body 11, Fig. 1, provided at each of its ends with an end closure member 13, 14 having a plurality of gas outlet holes 18, 19 which open into the interior of the rotor at locations radially spaced from the rotor axis 20, one of the closure members, 13 as shown, having at least one gas inlet hole 21 which opens into the rotor interior at a location radially spaced from the rotor axis and radially inwardly of the gas outlet holes 19, drive means 15, e.g. an electric motor, for the rotor means 24 for feeding a gaseous mixture to the gas inlet hole or holes 21, and means, e.g. 23, for collecting from the gas outlet holes separated components of the gaseous mixture. The wall 12 of the rotor body 11 consists of a metal, e.g. aluminium or aluminium alloy, frame 16 clad with polyester-or epoxy-impregnated carbon fibres 17. A tube 22 is provided to separate an outgoing gaseous component from the incoming gaseous mixture. The lower and upper ends of the rotor are respectively cooled and heated. A vacuum is maintained in the space 26 between the rotor body 11 and a surrounding stationary housing 25. Seals are provided at 27, 28 and 29. The rotor upper bearing consists of a thin pivot 30 for journalling, a folded band of rubber or other damping agent being inserted between the pivot and a sleeve 31. When separating UF 6 , a U 235  enriched fraction is discharged through the holes 18 and withdrawn at 23 and a U 235  depleted fraction is discharged through the holes 19, e.g. for enrichment in the next centrifuge of a cascade arrangement of similar centrifuges. In a modification, Fig. 2 (not shown), the inlet holes (33) in the end piece (13) are at an angle to the rotor axis and the tube (22) is integral with this end piece. In another embodiment, Fig. 3, a tube 38 is attached to the end members 36 and 37 and is provided with perforations 42, 43, 44. A scooping tube 45, 46 is provided for discharging a separated gas component under pressure. Further modifications are described and illustrated.
Patent GB-1116027-A (GB)
Title: Formation of insulating phosphate layer on copper
Inventor: DRAKE CYRIL FRANCIS
IPC: C23C8/28
Filed: 1967-05-12
Abstract: <PICT:1116027/C6-C7/1> An electrically insulating glassy phosphate layer is produced on a copper surface by heating the copper in an atmosphere comprising phosphorus pentoxide vapour and water vapour entrained in a carrier gas.  The process may be employed to coat single articles Fig. 2 (not shown), or wire or strip 36 may be passed continuously through a T-shaped reaction tube 20.  Fused phosphorus pentoxide is evaporated from silica boat 28 and nitrogen and water vapour are circulated by way of openings 31 and 32.  Heating is carried out by furnace 29 and auxiliary coil 30.  The coated wire is allowed to cool in that part of the longer arm of tube 20 which is outside furnace 29 before being exposed to air on passing through gland 38.  Preferably furnace 29 heats the copper to about 900 DEG C. and the reaction takes place at that temperature.  If desired the coated wire may be passed through a tube filled with dry non-reactive gas immediately after coating so that coating takes place in an atmosphere free of phosphorus pentoxide and no condensation of phosphorus pentoxide on the coating takes place Fig.4 (not shown).ALSO:<PICT:1116027/C1/1> An electrically insulating glassy phosphate layer is produced on a copper surface by heating the copper in an atmosphere comprising phosphorus pentoxide vapour and water vapour entrained in a carrier gas.  The process may be employed to coat single articles (Fig. 2, not shown), or wire or strip 36 may be passed continuously through a T-shaped reaction tube 20. Fused phosphorus pentoxide is evaporated from silica boat 28 and nitrogen and water vapour are circulated by way of openings 31 and 32. Heating is carried out by furnace 29 and auxiliary coil 30. The coated wire is allowed to cool in that part of the longer arm of tube 20 which is outside furnace 29 before being exposed to air on passing through gland 38. Preferably furnace 29 heats the copper to about 900 DEG  C. and the reaction takes place at that temperature.  If desired the coated wire may be passed through a tube filled with dry non-reactive gas immediately after coating so that coating takes place in an atmosphere free of phosphorus pentoxide and no condensation of phosphorus pentoxide on the coating takes place (Fig. 4, not shown).
Patent GB-1074020-A (GB)
Title: Gaseous diffusion electrodes and fuel cells or piles based on these electrodes
IPC: H01M4/86
Filed: 1964-05-28
Abstract: A process for producing sintered fuel cell electrodes comprises forming at least two layers of uncompacted metal powders e.g. Ni, Co, Au, Ag, Pt group metal or alloys in a die, one layer forming a coarse pore layer and the other a fine pore layer and at least one layer containing an expanding agent, compacting the layers together and then sintering.  The metal powder has a particle size of 1 to 10 microns, the expanding agent in the fine pore layer has a particle size of less than 40 microns and a particle size of 100 to 150 microns in the coarse layer.  The expanding agent may be ammonium bicarbonate or a compound which thermally decomposes to form an oxide of B, Al or Li e.g. a carbonate or oxalate of Al or Li.  The sintered electrodes may be heated to 600 DEG -1000 DEG  C., impregnated with a Li, B or Al compound and then heat treated at 400 DEG -1000 DEG  C in an oxidizing atmosphere to form the oxide of Li B or Al.  Oxidation catalysts such as nickel oxide, Ag or Pt may also be formed in the sintered electrode by impregnating with a decomposable metal salt such as chloroplatinic acid and nickel nitrate.  The sintered electrodes may also be coated with Ni or Pt by chemical or electrolytic means.  In an alternative embodiment the coarse and fine powder layers may be separated by a layer of expanding agent such as ammonium bicarbonate.  Double planar electrodes may also be made by forming the following layers in a die;  1) Fine pore powder layer  2) Coarse pore powder layer  3) A series of metal compacts placed on layer (2)  4) Spaces between the compacts filled with expanding agent 5) Coarse pore powder layer  6) Fine pore powder layer  The assembly of layers is then compacted and sintered.
Patent GB-1428675-A (GB)
Title: Distribution members for prestressed reinforcing elements in  prestressed structures
IPC: E04C5/12
Filed: 1972-05-11
Abstract: 1428675 End anchorage devices STRESSED CONCRETE DESIGN Ltd 2 May 1973 [11 May 1972] 22251/72 Heading E1W A distribution member 1 of an end anchorage for reinforcement cables 6 has a central passage for accommodating the cables and is provided with a plurality of shoulders 5, at or adjacent one end, distributed around and extending towards the longitudinal axis of the passage. The shoulders 5 define channels 5a in which may be accommodated cables 6. The shoulders 5 provide a greater bearing surface and a lesser span for a bearing plate 7 through apertures of which the cables are anchored. The element may be formed of cast iron and be of frusto conical form.
Patent GB-136788-A (GB)
Title: Improvements in and relating to Neckbands for Shirts and Shirt Blouses.
Inventor: THORP HENRY
IPC: A41B1/12
Filed: 1919-09-10
Abstract: 136,788. Thorp, H. Sept. 10, 1919. Shirts.-The neckbands are cut away as at B, Fig. 1, to render the back portion more flexible to accommodate movement of the collar and neck. In one modification, Fig. 3, the back portion is cut away as shown, and in another, Fig. 4, V- shaped grooves B' are made.
Patent GB-918956-A (GB)
Title: Improvements in and relating to the sorting of bottles or like articles
Inventor: WEBSTER ALEXANDER HYDE
IPC: B07C5/12
Filed: 1960-06-24
Abstract: 918,956. Gauging and sorting apparatus. WEBSTER & CO. Ltd., R. W. May 12, 1961 [June 24, 1960], No. 22269/60. Class 106 (2). [Also in Group XXX] Cylindrical objects such as bottles are guided off a conveyer 1 by means of a worm 2 and starwheel 3 and fed to converging recesses 6 in a rotating disc 5, where they are firmly held by a resilient belt 8. Bottles of non-standard diameter enter the recess too deeply, or not deeply enough and operate microswitches 11 or 12 to energize a solenoid depressing a plunger 13 associated with each recess. This plunger, in its depressed position, will trip a switch 17 at a rejection station to cause a blast of air from nozzle 19 (or operation of a mechanical member) to displace the bottle into the path of a " reject " star-wheel 20. Standard bottles are fed by star-wheel 4 back on to the conveyer 4. Bottles of non-standard height may be rejected using a microswitch 22 that also operates the plungers 13 if, as shown, bottles are too high. By using a switch having two " closed " positions bottles that are either too high or too low may be rejected. Caps remaining on the bottles may be detected by means of a magnetic impulse provided by ferrous caps, or in the case of non-ferrous caps, by a photo-cell receiving light reflected from the cap.
Patent GB-150905-A (GB)
Title: An improved clamp securing device for ropes
IPC: F16G11/04
Filed: 1919-09-11
Abstract: 150,905. White, J. W. Sept. 11, 1919. Coupling.-A clamp for securing ropes particularly in connexion with aerial ropeways comprises a block 3 grooved to receive the rope 1, and clamped to the rope by a series of U-bolts 4 on which are fitted bridge-pieces 5 preferably also grooved to fit the rope. The block may be formed with an eye 8 for the connexion of a tension or other desired part and is formed tapering so that the tension of the rcpe increases the clamping pressure. A lip 7 may be provided at the inner end of the block. A block tapering from each end towards the middle may be used for connecting the ends of two ropes.
Patent GB-1087927-A (GB)
Title: Bag filling machine
IPC: B65B1/18
Filed: 1966-05-19
Abstract: 1,087,927. Packaging-machines. NATRONZELLSTOFF - UND PAPIERFABRIKEN A.G. May 19, 1966 [May 20, 1965], No. 22334/66. Addition to 1,081,396. Heading B8C. The valve-bag filling machine described in Specification 1,081,396 is modified in that two filling nozzles (11a), (11b), Figs. 1, 2 (not shown), are connected to the fluidizing chamber (8). Each filling nozzle may have a weighing device and a shut-off valve (10a), (10b) associated therewith but a common weighing device could be provided. Feeler members 36, 37, which may be photo-electric sensing devices, stop the machine if an empty bag is not attached to the filler nozzle just prior to the filling operation.
Patent GB-865717-A (GB)
Title: Improvements in or relating to liquid storage tanks
Inventor: DASHWOOD ROBERT GORDON
IPC: B65D90/04
Filed: 1957-07-15
Abstract: 865,717. Tanks. PLASTIC LINERS Ltd. Oct. 13, 1958 [July 15, 1957], No. 22335/57. Class 69 (1). A galvanized iron water storage tank is provided with a pre-formed internal liquid-tight and corrosion-resistant lining of a flexible plastic material, shaped to fit within the tank, so as to be supported by contact with the walls and base of the tank. The lining may be secured, at least along its upper surface, to the internal surface of the tank. The lining may be made of thermoplastic such as P.V.C. or polythene, the joints in the lining being heat-sealed or welded. Thermal insulating material may be provided between the lining and the internal surface of the tank. The thermal insulating material may be included as a layer between two layers of flexible plastic material, at least the inner layer of which is adapted to form a liquidtight bag. Inlet and outlet connections to the tank are sealed to the lining of plastic material by means of grommets. A used galvanized iron water storage tank may be rehabilitated and provided with a lining of flexible plastic material as described in Specification 865,719.
Patent GB-162980-A (GB)
Title: Improvements in electric light sconce fittings
IPC: H02G3/20
Filed: 1920-07-27
Abstract: 162,980. Hamlyn, S. W. July 27, 1920. Supporting, -For mounting an electric lamp bulb in the socket of a candle sconce, a tubular support a screwed at the top to take the usual lampholder is provided at its bottom with two sets of spring-fingers g which may be expanded to grip the internal surface of the socket. The spring-fingers are mounted on two discs e, f, having respectively right and left hand screw - threads which engage w i t h corresponding screwed portions b, c of the support a, so that by rotating the support the two discs may be moved towards each other, thus causing the spring fingers g which ride over a loose disc d to be expanded so as to grip the internal surface of the socket.
Patent GB-1464304-A (GB)
Title: Manufacture of  telecommunication cables and paper-covered  electrical conductors therefor
IPC: H01B13/10
Filed: 1975-05-20
Abstract: 1464304 Paper insulated conductor RELIANCE CORDS & CABLES Ltd 20 May 1975 [20 May 1974] 22383/74 Heading H1A [Also in Division B8] An electrical conductor is wrapped with an insulating paper ribbon such that an exposed edge of the ribbon extends longitudinally of the conductor, the ribbon adjacent the edge being bonded to a further part of the ribbon. The overlap of the ribbon may subtend an angle of at least 110 degrees at the conductor's centre. The paper may have a moisture content of at least 4%. The bonding adhesive may be a hot melt adhesive comprising a polyolefine or a polyamide-based compound.