baber/WOPTO huggingface dataset:
Patent GB-715833-A (GB)
Title: Improvements in dry cleaning machines
Inventor: GRAY FREDERICK THOMAS
IPC: D06F43/08
Filed: 1951-11-15
Abstract: In a dry-cleaning machine of the type including an air circulation system having an air cooler and an air heater for p  introducing purified hot air into the cleaning drum for drying its contents, the air cooler is refrigerated.  The air cooler condenses out the solvent vapour in the drying air before it is re-heated and recirculated to the drying drum.  A more complete removal of the solvent vapour is achieved in the refrigerated air cooler than with one using water-cooling.  Since the re-circulated air is purer its re-heating temperature may be reduced.  In the form shown, the casing 1 of the machine wherein the articles are subjected to the usual cleaning and drying, is connected to <PICT:0715833/III/1> an air circulating system for the drying step containing a fan 2 driving air through a heater 3.  The heated air passes through a duct 4 and enters the casing near the bottom through a slot 5. The air flows through the usual perforated drum containing the articles under treatment in the casing 1 and leaves the latter by an outlet duct 6.  The air then flows through a filter to a cooler 7 and returns to the fan through ducts 8 and 9.  The cooler 7 is provided with tubes or surfaces through which brine is circulated from a refrigerator 10. Specification 597,167, [Group VIII], is referred to.
Patent GB-934477-A (GB)
Title: Improvements in or relating to cable bucket conveyors
IPC: E21F13/02
Filed: 1962-07-13
Abstract: 934,477. Rope railways; terminals and stations for overhead ways. F. W. MIDGLEY. July 13, 1962, No. 27078/62. Addition to 920,114. Classes 78 (4) and 104 (2). In an improvement in or modification of the cable conveyer of the parent Specification the endless cable 1 is supported by sheaves 2, 3, 4 and 5 to form two vertically spaced, parallel, twin cable tracks A, C and B, D, which extend between two terminal stations and move in opposite directions upon rotation of the sheaves. Cross-over cable guide sheaves 6, 7, 8 and 9 rotatably mounted on vertical spindles are provided at one of the terminal stations. The rope tensioning arrangement, load carrying buckets, means for loading and unloading the buckets and the arrangements for transferring the buckets from one track to the other are identical to that described in the parent Specification.
Patent GB-503526-A (GB)
Title: Improvements in circuit arrangements for electric heating apparatus
IPC: F24C15/10
Filed: 1937-10-06
Abstract: 503,526. Two-part couplings. ROGERS, R. H. Oct. 6, 1937, No. 27090. [Class 38 (i)] A plug-and-socket or like coupling for connecting a heating unit e to supply terminals mounted in a base a is fitted with a switch that opens when the coupling is disconnected so that the exposed terminals are not live. A socket g for an earthing pin s has a lateral opening r through which a lever o pivoted at p projects into the path of the pin s. The lever carries an insulated contact u that bridges a pair of spring contacts v when the lever is depressed by the pin e, the tip of which may be resilient. The contacts v are connected in the supply conductor by terminals w that are out of line so as to receive parallel leads. When the pin s is withdrawn the switch drops into open position before the earthing connection is broken. The device may be applied to heaters of the kind described in Specifications 475,038, [Group XI], and 492,898.
Patent GB-1490022-A (GB)
Title: Cake drum or board
IPC: A47G19/30
Filed: 1976-05-14
Abstract: 1490022 Cake boards ANNIVERSARY HOUSE Ltd 14 May 1976 [26 June 1975] 27171/75 Heading A4A [Also in Division B5] A cake board comprises a core of polystyrene sandwiched between two cards and held thereto by adhesive, the perimeter of the board being covered by an edging strip attached thereto by adhesive. As described the core (1) is of expanded polystyrene and the cards (2, 3) are held to the two opposite faces of the core by a p.v.a. or acetate adhesive (4). The edges of the board may also be covered with card (5) and the whole may have an outer covering of silver foil (6), paper, or plastics. In manufacture, the core is cut from a large sheet of polystyrene to have a square,  rectangular, circular, or heart shape, the adhesive and cards are applied and the board is pressed between heated rollers or pressure plates. The foil or external plastics covering is applied in one with the cards or at a later stage. The core may be cut from the polystyrene sheet using a hot wire or a cutting blade shaped to the finished core and containing within its whole area rubber or a spring-loaded plate which presses the core away from the blade after cutting.
Patent GB-974911-A (GB)
Title: Fabricated ball valve
Inventor: MAGOS JOHN PETER
IPC: F16K27/06
Filed: 1962-07-16
Abstract: 974,911. Valves. CRANE CO. July 16, 1962, No. 27206/62. Heading F2V. A fluid control ball valve comprises a casing formed of a cylindrical tube 2, Fig. 1, a tubular member 7 attached transversely to the casing, a spherical closure member 29 having a fluid passage 31 therethrough and a diameter such that it may be passed into the casing tube from one end thereof, means 13 in the member 7 to rotate the closure member, back-up members 35 disposed in the ends of the casing, seat rings 42 carried on the back-up members, and resilient fluid seals 45 around the seat rings in contact with the closure member. The means 13 consists of a steam which is connected to a handle 22 limited to 90 degrees rotation by a slot 19 and pin 18 and has flats 27 to engage a slot in the closure member. Each member 35 is screwed into the casing and is fitted with 0-rings 37, 44, a slight radial clearance being left between it and the seat ring to enable fluid pressure to hold the seals 45 against the closure member. In Fig. 3, each back-up ring has a flange 51 engaged by a flange 53 slipped over the tubular casing 48 and by a flange 56 welded, brazed or soldered to a pipe section 62. In Fig. 4, each back-up ring is secured by a series of set-screws 73 permitting limited axial movement and engages a pipe flange 78 through a gasket 76, studs 81 connecting the pipe flanges together. Fig. 5 shows a back-up ring 82 located between a shoulder 84 in the casing and a split ring 87. A weld 92 and a weld 95, having a ground face to engage a gasket 96, secure a flange 91 to the casing. In a further modification, one of the back-up members is integral with the casing.
Patent GB-1370855-A (GB)
Title: Electrical capacitors
IPC: H01G4/12
Filed: 1972-06-12
Abstract: 1370855 Capacitors ELECTRICAL RESEARCH ASSOCIATION Ltd 1 June 1973 [12 June 1972] 27298/72 Heading H1M A method of manufacturing an electrical capacitor comprises printing on a ceramic substrate a film comprising finely divided metal and powdered glass and firing to form a base electrode, printing on the base electrode a film of a glass-ceramic paste which will recystallize on subsequent firing to produce a dispersion of ferroelectric crystals throughout the layer, and printing on top a film comprising finely divided metal and powdered glass and firing to form a second electrode, the glass in the top layer being of a composition such that it softens in the range 700-850 C. and recrystallizes on further heating at below 1000 C. to form a glass ceramic having a minimum permittivity of 50 at 25 C. The electrode metal may be Pt, Au, Ag or Pd. The glass in the top and dielectric layers may be the same or similar and may comprise 30 to 90 weight per cent of NaNbO 3 , CdNb 2 O 6 , SrNb 2 O 6 , PbNb 2 O 6 , BaNb 2 O 6 , Cd 2 Nb 2 O 7 , Sr 2 Nb 2 O 7 , Ba 2 Nb 2 O 7  and a glass-forming oxide which may be B 2 O 3  and/or SiO 2 .
Patent GB-1172863-A (GB)
Title: Improvements in or relating to Melting Furnaces
Inventor: HIGGS ARTHUR
IPC: F27B19/00
Filed: 1966-01-27
Abstract: 1,172,863. Metal melting furnaces. GAS COUNCIL. 2 Jan., 1967 [27 Jan., 1966; 18 June, 1966], Nos. 3634/66 and 27330/66. Heading F4B. A metal melting furnace, particularly for Al alloys, comprises a preheating shaft 19 with feed hopper 35 and lower heat-resisting metal rams 32 feeding semi-molten charge on to the hearth 26 of a melting chamber 13 with gas burners 34 and a roof 17 curving downwardly to a dividing wall 14 formed at its base with a jack arch 24 of spall-resistant refractory cooled by an air casing 25. Waste gases ascend the shaft 19 and operation of the rams 32 is intermittent being controlled by a thermostat set to operate when metal on slope 27 is softened. The furnace walls comprise an outer metal shell 20 enclosing layers 21, 22 of insulation and a lining 23 of refractory. The hearth 26 slopes downwardly to a taphole feeding a rotary holding furnace, Fig. 2 (not shown), heated by a radiant tube. Waste gases from this tube are cooled and fed back to the holding furnace as a neutral atmosphere. Weight-responsive cells in a support for the holding furnace control the gas and air lines of the melting furnace through an electric switch and motorized valves.
Patent GB-482898-A (GB)
Title: Improvements in road paving blocks for bridges and like structures
IPC: E01D19/08
Filed: 1936-10-09
Abstract: 482,898. Paving-units. UNIVERSAL RUBBER PAVIORS, Ltd., and GAISMAN, L. Oct. 9, 1936, Nos. 27381/36 and 22839/37. [Classes 20 (ii), 20 (iv), and 87 (i)] A carriage-way unit to span a space between supporting members of a bridge or like structure consists of a rubber face keyed to a base comprising a load-carrying built-up assembly of rolled steel members. In one form, Fig. 1, the base comprises plates a, e spaced apart by rings c, d, part rings b and edge strips h, the various parts being welded together. The lower parts of the rings may. be filled with concrete i<1> and the upper parts receive undercut projections i of a layer of hard rubber on top of which is softer rubber j. Holes i2 may be provided in the lower steel plate a for keying the concrete. In another form, Fig. 2, the base comprises a plate k, three parallel channel members l welded or riveted thereto and a concrete filling m which may be formed with undercut recesses o by a flexible rubber negative as described in Specification 377,269, [Group V], to key with the rubber face p, q. Twisted steel reinforcing rods n are provided. In a modification, the back plate k is omitted and the channel members are secured together with or without spacing pieces by bolts, rods, rivets or welding. In a further form, Fig. 4, the base comprises I-section steel members r welded together at s and provided with transverse rods t carrying distance pieces u and with a concrete filling w in which keying recesses x are formed by temporary rubber plugs in alignment with holes v. The unit may be secured to the bridge framework by bolting or riveting. Specifications 194,618, 198,618, and 214,433, [all in Class 87 (i)], also are referred to. According to the first Provisional Specification, the construction shown in Fig. 1 may be modified by replacing the rings by a single stamping from a sheet or by arranging a second layer of larger rings on the first layer.
Patent GB-873647-A (GB)
Title: Improvements in or relating to apparatus for saturating webs of felted fibres
IPC: D04H1/64
Filed: 1959-08-12
Abstract: 873,647. Impregnating webs. TEXON Inc. Aug. 12, 1959 [Aug. 13, 1958], No. 27581/59. Class 140. An apparatus for impregnating a wet web W of felted fibres, e.g. with liquid rubber latex, comprises a container 12 for the liquid 13, a roll 9 mounted above the container 12 for rotation about a horizontal axis 10, the roll 9 having an imperforate cylindrical surface 9a and being mounted so that it dips into the liquid 13, an endless screen 3 having a websupporting reach 3a which passes through the container 12 below the roll 9 so as to confine the web W under pressure between the roll 9 and the screen 3, means, e.g. driven rolls, for moving the screw 3 to carry the web through the container 12 beneath the roll 9, and means, e.g. a trough 16a, for delivering impregnating liquid to the upper surface of the web as the web moves away from the roll 9. Liquid may also be delivered from the trough 16a to the upper surface of the web where it approaches the roll 9, as shown. A doctor blade 15 is provided.
Patent GB-814759-A (GB)
Title: Separation of hydrogen-methane mixtures
IPC: F25J3/02
Filed: 1956-09-10
Abstract: <PICT:0814759/III/1> Mixtures of methane and hydrogen are separated by absorbing the methane in a liquefied normally gaseous hydrocarbon, e.g. propane, propylene, ethane or ethylene.  The process may be applied to naphtha reforming gas containing in addition to hydrogen and methane, smaller amounts of heavier hydrocarbons, water vapour and a minor amount of sulphuretted hydrogen, all of which may be removed in one or more preliminary cooling stages.  Naphtha reforming gas enters a reversing heat exchanger 13 through pipes 11 and 14 to a passage 29.  Where the gas is cooled to - 55 DEG  F. by indirect heat exchange with waste gas (methane and some hydrogen and heavier hydrocarbons produced in later stages) in passage 31 and product hydrogen in passage 32.  Water vapour is condensed to ice, and to prevent blockage, the flow of feed gas is at intervals diverted to passage 31, and waste gas to passage 13 which evaporates the ice. The water-free gas then enters heat exchanger 33 where it is cooled to - 200 DEG  F., to condense heavy hydrocarbons which flow into the separator drum 36 and are combined with the waste gas circuit in pipe 38.  The feed gas is then cooled to - 290 DEG  F. in heat exchanger 41 where any residue of heavy hydrocarbons and most of the methane is separated, and flow into a separator 43.  This condensate is also added to the waste gas circuit 38.  The hydrogen feed gas now containing about 5 per cent of residual methane passes to an absorption tower 47 where it is extracted with counter-flowing liquid propane admitted through pipe 48.  The final hydrogen product is removed at 49, cooled in heat exchanger 51 to - 295 DEG  F., and passes to heat exchanger 41, is self-cooled in an expander 56 reducing its temperature to - 312 DEG  F. and used to cool propane in heat exchanger 58 before it enters the absorption tower 47.  The substantially pure hydrogen is then used in the earlier heat exchanger stages, except a small amount diverted from the exit 67 from heat exchanger 54 and this passes through pipe 68 and is used to strip absorbed methane from liquid propane which flows into the tower 77, the resulting hydrogen/methane mixture being used as coolant in the earlier stages as waste gas.  Temperatures and pressures at each stage are specified, also the composition of the feed gas, separated hydrocarbons and waste gas.  Specification 431,970 is referred to.
Patent GB-1115262-A (GB)
Title: Preparation of wax emulsions
IPC: C08J3/03
Filed: 1965-06-30
Abstract: 1,115,262. Polyolefin dispersions. UNION CARBIDE CORPORATION. 30 June, 1965 [1 July, 1964], No. 27625/65. Heading C3P. Chemically modified polyolefins, optionally together with rosin, shellac, casein or phenolformaldehyde resin are emulsified in water by a process comprising combining molten polyolefin, an emulsifier and water in a first blending stage, agitating the resulting mixture so as to form a water-in-polyolefin dispersion preferably having a solids content of at least 70% by weight while maintaining the mixture at a temperature above the melting temperature of the polyolefin and at a pressure sufficient to keep substantially all the water in a liquid state, transferring the water-in-polyolefin dispersion to a second blending stage, adding sufficient water to bring about a phase inversion while maintaining the temperature and pressure as above, and cooling the resultant polyolefin-inwater emulsion. The polyolefins may be homo- and co-polymers of ethylene, propylene and butene-1, copolymers of these olefins with ethylene acrylate, styrene, bicycloheptene, vinyl acetate, acrylic acid and may be modified by air oxidation or by reaction with thioglycolic acid or maleic anhydride. The emulsifier may be cationic, anionic or non-ionic and is preferably used in amounts giving a weight ratio of 0À5 to 3 emulsifier to water and at least 15 parts by weight emulsifier to 100 parts by weight polyolefin in the first blending stage.
Patent GB-1416650-A (GB)
Title: Method of depositing electrode leads
IPC: H01L21/60
Filed: 1973-06-11
Abstract: 1416650 Semiconductor devices RCA CORPORATION 11 June 1973 [23 June 1972] 27665/73 Heading H1K A method of manufacturing conductive tracks on two levels bridging a transition wall between the levels comprises: depositing a conductive layer 18 over a semi-conductor chip 4, coated with insulating material 6, and a substrate 2 supporting the chip, so as to contact desired areas of the chip; masking the-layer 18 with photoresist so as to expose only those areas of 18 where tracks are desired; electrolytically depositing conductive material through the mask using layer 18 as a cathode, to build up tracks 12 and 14 to a desired thickness; removing the photoresist and etching the exposed areas of layer 18 to leave only tracks 12 and 14 upon the insulating layer 6 as shown in Fig. 1. The chip may form a diode and be of germanium, silicon or a III-V compound. The insulating layer 6 may be of silicon dioxide, silicon nitride, aluminium oxide or organic material. Layer 18 may be of aluminium, leads 12, 14 being of copper topped with gold or palladium, platinum or ruthenium. Alternatively the lower parts of leads 12, 14 may be of a material exhibiting magnetic properties, e.g. nickel, iron, or an alloy of these, or of a material exhibiting resistive properties, e.g. chromium. The substrate may be a ceramic material.
Patent GB-1392417-A (GB)
Title: Process for the separation of sugars and sugar alcohols
IPC: C13K13/00
Filed: 1973-06-11
Abstract: 1392417 Separating sugars; chromatography on boron-containing resins BOEHRINGER MANNHEIM GmbH 11 June 1973 [15 June 1972] 27693/73 Heading C2S [Also in Divisions B1 and C3] Sugars and sugar alcohols are separated by chromatography of the aqueous solutions on insoluble polymers of 4-vinylphenyl boric acid or its derivatives or copolymers thereof, e.g. with, e.g. styrene and/or divinylbenzene. Sugars used in examples include D-glucose, D-fructose, D-mannose, D-galactose, D-lyxose, L-arabinose, D-xylose, D-ribose and maltose.
Patent GB-461446-A (GB)
Title: Improvements in or relating to electrically driven compressors for air and other gases
IPC: F25B31/00
Filed: 1935-10-09
Abstract: 461,446. Starting and stopping compressors. WARD, Ltd., T. W., and CHAR- . LESWORTH, T. R. Oct. 9, 1935, No. 27838. [Class 8 (i)] An electrically driven compressor B is driven from a motor A through a rotary connection K and delivers air &c. to a receiver F through a non-return valve D by a pipe having a relief valve G held open at starting and closed by the connection K when the motor is working at full power. The driving connection K comprises a bush 10 keyed to the motor shaft and having a flange 14 with helically formed interrupted faces adapted to be engaged by axial projections on the drive pulley 11 which bears on the bush 10 and a sleeve 21 thereon. The pulley is pushed towards the flange by a spring 24 and the flange is thus made to engage a lever L to push the valve G open. The pulley is pushed back against the spring under the influence of transmitted torque. Between the sleeve 21 and the pulley an air space constituting a dashpot is formed.
Patent GB-533142-A (GB)
Title: Preparation of copolymers of butadiene and vinylidene chloride
IPC: C08F236/04
Filed: 1939-10-13
Abstract: 533,142. Synthetic rubber. WINGFOOT CORPORATION. Oct. 13, 1939, No. 27841. Convention date, Nov. 25, 1938. [Class 2 (iii)] Plastic rubbery and resinous materials are made by heating to about 50C. mixtures of butadiene or its homologues and vinylidene chloride, preferably in aqueous emulsion with sodium oleate and if desired in the presence of catalysts such as benzoyl peroxide and sodium perborate and promoters such as carbon tetrachloride and trichloropropionitriles. The quantity of butadiene or its homologue is 50-65 per cent. of the monomer mixture.
Patent GB-271334-A (GB)
Title: Improvements in garment presses
IPC: D06F71/02
Filed: 1926-11-06
Abstract: 271,334. Zeidler Corporation, (Assignees of Sutton, H. G.). Sept. 23, 1926, [Convention date]. Addition to 230,801- Ironing-presses.-In the type of press described in the parent Specification in which the head 7 is first moved horizontally over the buck 6 and is subsequently depressed to contact therewith, the head is carried by a pair of substantially L- shaped members 8, the two arms of each of which enclose an acute angle. Each member 8 is provided with a pair of bowls 19, 23 which ride in cam slots 12, 14 formed in the side frames 3 of the stationary frame. A pedal 45 is linked to bell-cranks 40, the arm 32, of each of which forms a toggle with one of a pair of links 35 adjustably secured to brackets on the lower ends of the head carrying members 8. Return springs 53 are secured to the frame and to the lower ends of the head carriers 8.
Patent GB-413263-A (GB)
Title: Improvements in and relating to methods of manufacturing electrical insulating material
IPC: H01B3/06
Filed: 1932-10-07
Abstract: An electric insulating-composition is prepared by heating asbestos, freeing if from air, and impregnating it with "nitro-lacquer, highgrade oil lacquer, hydrocarbon mixtures" or synthetic resins, which may be glyptal resins, phenol resins or aniline resins. Insulating sheets or tapes may be obtained by treating asbestos paper and tape in this manner.
Patent GB-1374642-A (GB)
Title: Apparatus for internally coating metal tubes with resin
IPC: B05D7/22
Filed: 1972-06-15
Abstract: 1374642 Coating inside tubes JAPAN PROVAC CO Ltd 15 June 1972 [16 June 1971] 28018/72 Headings B2E and B2L Apparatus for coating the inside of tubes with a powdered resin material comprises means for sealing the ends, evacuating the air from the tube, heating rotating, restoring the air to and cooling the tube. Tubes 7 are fed on a conveyor 14 to a station 2 where an arm 8 having a trough like end and mounted on a pneumatic ram carries powder from a fluidised bed to the tube. A second arm then enters the tube and has an end which levels out the powder in the tube. End caps are then placed on the tube, one having an electromagnetic valve. The valve is opened and the tubes atmosphere removed by a vacuum pump 26. The valve is closed and the tube is carried on one conveyor and caused to rotate by contact with a second conveyor as it passes through a furnace 4 which fuses the resin powder. The valve in the tube end cap is then opened and the atmosphere allowed in to apply pressure to the coating whilst the tube is cooled by a water spray 5, in one example 363 g of vinyl chloride resin was put in a 50 mm diameter steel tube having an outer diameter of 58 mm. and a length of 5.5 m. The tube was heated for 12 minutes at 220‹C. This produced a coating 0.3 mm. thick.