baber/WOPTO huggingface dataset:
Patent GB-463747-A (GB)
Title: A combined firescreen and folding table
IPC: A47G5/04
Filed: 1935-11-27
Abstract: 463,747. Convertible furniture. HIGGS, W. E. Nov. 27, 1935, No. 32808. [Classes 52 (iii) and 52 (iv)] A combination fire-screen and table comprises behind the screen proper, a pair of grooves or channels a, in which move vertically two runners b, which are connected by hinges e to the underside of the table d. When the runners reach the top of the channels a, the table may be turned to the horizontal position shown; in this position it is supported by brackets f, g hinged to the screen and to the underside of the table d respectively. The edging rail h is wide enough to form a capping for the screen when the table is turned down behind it.
Patent GB-537546-A (GB)
Title: Crystal controlled oscillator particularly for ultra-high frequencies
IPC: H03B5/34
Filed: 1939-12-22
Abstract: 537,546. Valve generating circuits. STANDARD TELEPHONES & CABLES, Ltd. Dec. 22, 1939, No. 32818. Convention date, Jan. 5. [Classes 40 (iii) and 40 (v)] A crystal-controlled oscillator, particularly for ultra-high frequencies, has a feed-back circuit in which the tuned grid and plate circuits are conjugality coupled to a bridge circuit of which one or two arms are formed by a crystal Q1, Fig. 3, the remaining arms comprising capacitances CB of such values as as to form with the static capacitances of the crystals a balanced capacity bridge, thereby annulling the effect of the static capacity in the feed-back circuits so as to make its reactance positive for all harmonic frequencies of the fundamental. Frequencies up to the twenty-third harmonic may be produced. The same principal may be used in generators having two pentode valves using circuits balanced as regards earth potential. Thus in Fig. 7, the output circuits include two ganged condensers and a coil L4 coupled by a feed-back coil L5 to a bridge circuit comprising a crystal Q2, condenser C3, and two ganged condensers connected to the grids of the pentodes. In an alternative circuit, the output circuits of the balanced pentodes are connected to the input grids directly, Fig. 8 (not shown), or inductively, Fig. 9 (not shown), by a bridge circuit comprising the crystal and three condensers. Specification 475,275 is referred to. The Specification as open to inspection under Sect. 91 also shows in Figs. 14, 15 (not shown) the application of the bridge circuit to generators using single pentodes. This subject-matter does not appear in the Specification as accepted.
Patent GB-900790-A (GB)
Title: Improvements in or relating to crystalline synthetic cryolite
IPC: C01F7/765
Filed: 1960-09-23
Abstract: <PICT:0900790/III/1> Crystal agglomerates of cryolite are produced by maintaining fine cryolite crystals as a fluidized suspension in an up-flowing super-saturated cryolite solution, whereby agglomerates form and are withdrawn from the suspension.  The initial cryolite particles are generally of less than micron size, whilst the agglomerates have a size from 60 to 450 microns and an apparent density from 0,9 to 1,29 grams/c.c.  The super-saturated cryolite solution employed may be formed in situ by reaction between sodium aluminate and hydrofluoric acid, sodium fluoride and aluminium fluoride or sulphate, or between ammonium fluoride and sodium aluminate, either in the fluidized bed or in lines leading thereto, for example in the saturated cryolite solution withdrawn from the bed and recycled.  As shown in Fig. 1, cryolite crystals of 5 to 20 micron size are introduced from a hopper 5 into a crystallizer 1 through which a recirculated saturated cryolite solution is passed upwardly.  Sodium aluminate solution is added to this cryolite solution from a vessel 3 and ammonium fluoride or hydrogen fluoride is passed directly to the crystallizer from a vessel 2.  The cryolite crystals are fluidized in the crystallizer 1 and the agglomerates formed are withdrawn through line 7 whilst the supernatant cryolite solution passes through a vessel 6 and cooler 4 for recycle. Cryolite of composition from 5,5 NaF.2AIF3 to 6,87 NaF.2AIF3 may be obtained from sodium aluminate and hydrofluoric acid at pH 2 to 8, or from sodium fluoride and aluminium sulphate at pH 4 to 6, or from ammonium fluoride and sodium aluminate at pH 9,5 to 10,5.
Patent GB-675230-A (GB)
Title: Fire-bar mounting for grates
IPC: F23H13/00
Filed: 1949-12-23
Abstract: 675,230. Firebars. CARRON CO., and PAYNE, B. W. Dec. 27, 1950 [Dec. 23, 1949], No. 32903/49. Class 51 (i). In a fire-bar mounting for a grate in which the ends of each fire-bar rests in arcuate recesses, each recess has the form of part of a surface of revolution and is partly closed by a tongue forming part of a chord of the surface of revolution. The segmental ends 7 of rocking fire-bars 6 rest in recesses 3 which may be conical or cylindrical in shape. Tongues 8 depending from the fire-bars engage notches in a reciprocating bar 10 to rock the fire-bars. Tongues 5, forming part of chords of the surfaces of the recesses 3 partly close the recesses so that the bars cannot be accidentally dislodged. The bars can be removed by turning them through 90 degrees.
Patent GB-989072-A (GB)
Title: Method of separating gas mixtures
IPC: C01B13/02
Filed: 1961-09-14
Abstract: 989,072. Separating gases using zeolites. UNION CARBIDE CORPORATION. Sept. 14, 1961 [Sept. 16, 1960], No. 32932/61. Heading B1L. In a process for the adsorption of impurities from a feed gas stream containing impurities and product gas by passing the feed gas stream through an adsorption zone containing a bed of zeolitic molecular sieves having a pore size of at least 4Š the zeolitic bed is at least partially preloaded with prduct gas by passing a gas containing product gas through the adsorption zone in a cocurrent direction to the feed stream and then in successive stages passing the feed gas stream through the adsorption zone to adsorb impurities until breakthrough occurs, depressurizing the adsorption zone to recover product gas, desorbing the zeolitic bed by cocurrently passing a hot inert purge gas through the adsorption zone to remove impurities and finally cooling and at least partially preloading the zeolitic bed with product gas by cocurrently passing through the adsorption zone a gas containing product gas having a lower temperature than the purge gas, the amount of product gas in said gas being sufficient to at least partially preload the zeolitic bed with product gas. As shown in Fig. 1, an ethylene stream containing carbon dioxide as impurity is introduced at 10 into bed A and a gas stream rich in ethylene is removed therefrom through valve 18. After adsorption valves 12 and 18 are closed and bed A is blown-down. While bed A is in adsorption bed B is blown-down by opening valve 19, ethylene thus recovered is collected in surge tank S and the latter part thereof is passed to atmosphere. A gas stream at 290 ‹C. is passed via conduit 35 and valve 36 to regenerate the bed B and then to guard bed E. Bed D, previously cooled, is preloaded with ethylene by passing purified demethanizer, overhead gas, supplied from guard bed F therethrough, the outgoing gases subsequently pass into bed C which is thus cooled from 290 ‹C. to 38 ‹C. In Fig. 2 (not shown), only three beds are used, one of which at any given time is being both cooled and preloaded. Demethanizer purge gas. free from carbon dioxide and acetylene is used and no guard beds are employed. Molecular sieves used are chabazite, erionite, mordenite fanjasite and synthetic zeolites A, D, R, S, T, X, Y and L. The adsorption pressure ranges from 1-100 atmospheres and the temperature from 5-120 ‹C.
Patent GB-1410456-A (GB)
Title: Plated metal sheet
IPC: B32B15/01
Filed: 1973-07-10
Abstract: 1410456 Copper-lead laminates BLEIINDUSTRIE KG 10 July 1973 [14 July 1972] 32933/73 Heading B5N [Also in Divisions B3 C7 and E1] Copper-plated lead sheet material is made by applying a copper layer on one or both sides of a lead sheet with or without the use of bonding means. Bonding may be effected by the use of an organic or inorganic adhesive such as waterglass, by hot-sealing of a copper foil on to a polyethylene-coated lead sheet (optionally after cooling of the copper foil with an ethylene copolymer) or by soldering using an intermediate layer of soldering tin (particularly 60% tin-40% lead alloy) of 50-80 microns in thickness. In the latter case, the facing surfaces of the foil and lead sheet may first be plated with an alloy of 60% by weight tin and 40% lead.
Patent GB-175761-A (GB)
Title: Improvements relating to the mercerising of cotton
IPC: D06B7/02
Filed: 1920-11-24
Abstract: 175,761. Nelson, A. Nov. 24, 1920. Slubbings and rovings, mercerizing.-cotton is. mercerized in the form of a rope or chain comprising a number of slightly twisted slubber or intermediate rovings laid alongside cne another. Each roving contains only sufficient twist to enable it to withstand the subsequent tension. The Specification states that the fibres thus treated are all mercerized. Sliver, slightly twisted in the slubbing frame, or roving from au intermediate or jack frame and preferably with a slight left-hand twist, is taken in bobbin, form to a chaining-machine, coiled into a can, or wound on a cheese or beam, mercerized, washed, dried, re-wound on bobbins, and then drawn ir. the ordinary way.
Patent GB-1434384-A (GB)
Title: Gas-cooled nuclear reactor installations
IPC: G21C9/016
Filed: 1973-07-11
Abstract: 1434384 Nuclear reactors SIEMENS AG 11 July 1973 [14 July 1972] 33134/73 Heading G6C In a nuclear reactor installation, a spray system has outlets within the reactor pressure vessel for the purpose of cooling melted core material. The reactor is a gas- (e.g. helium) cooled fast breeder. In one embodiment (Fig. 1) fuel elements are secured by means of a holding device 10 comprising tubes 12 through which coolant gas normally is fed towards the core 4. The coolant circulates within the concrete pressure vessel 2, as indicated by arrows 16, so as to pass in heatexchange relation with a steam-generator 15. The lower part of the shield 3 within the vessel 2 forms a tank 20 which receives core material, should this fuse, and prevents accumulation of a critical size. Water is sprayed into the vessel 2 via the tubes 12 in the event of core meltdown, the steam generated passing to the generator 15; a one-way valve ensures continuance of the (arrowed) flow pattern. A larger tank 25 is provided to receive debris should the core melt its way through the base of tank 20 and the vessel wall supporting the latter; additional cooling means may be provided in tank 25. Should steam not be routed through the steamgenerator 15 as described, it may be released into the interior of the steel containment 1 and heat removed therefrom by water emanating from an external sprinkler system 28. In another embodiment (Fig. 2) water can be sprayed into tank 20 from lines 30, 31 within the vessel 2. After passing through the steamgenerator 15, excess steam can pass to the exterior of the vessel 2 via an aperture 36 to give up heat to the surrounding steel containment.
Patent GB-691296-A (GB)
Title: Improvements in or relating to method of pelleting finely divided solid substances
IPC: B01J2/12
Filed: 1948-12-23
Abstract: <PICT:0691296/IV (a)/1> Pellets of one or more finely-divided solid substances, e.g. phenol formaldehyde moulding powder, are formed and coated with another solid substance, e.g. carnauba wax or polystyrene, which melts at a lower temperature than the other substance or substances by initially supplying a mass of the moulding powder to a rotary drum 10, not inclined at more than 30 degrees from the horizontal, continuously rotating the drum, continuously supplying additional finely-divided powder through a conveyer 18, continuously supplying solid carnauba wax or polystyrene through a conveyer 20 into the drum at a point below the surface of the rotating mass of material in the drum, and simultaneously heating the wax or polystyrene to form a liquid which coats the powder. The wax or polystyrene may be heated by heating the additional powder.  The pellets are removed by conveyers 22, 23 which may be cooled by jackets 24, to screens 27, 28 which separate the pellets from the fines.  The pellets in the barrel 30 may be ground and returned to the drum with the fines by the conveyer 18.  The pellets may be cooled, heated or dried by using a jacketed drum to which a cooling or heating medium is supplied or by circulating air through the drum. The Specification as open to inspection under Sect. 91 comprises also the subject-matter of Specification 654,272, [Group V], which is referred to.  This subject-matter does not appear in the Specification as accepted.ALSO:<PICT:0691296/III/1> Pellets of one or more finely divided solid substances, e.g. phenol formaldehyde moulding powder, are formed and coated with another solid substance, e.g. carnauba wax or polystyrene, which melts at a lower temperature than the other substance or substances by initially supplying a mass of the phenol formaldehyde to a rotary drum 10, not inclined at more than 30 degrees from the horizontal, continuously rotating the drum, continuously supplying additional finely divided phenol formaldehyde through a conveyer 18, continuously supplying solid carnauba wax or polystyrene through a conveyer 20 into the drum at a point below the surface of the rotating mass of material in the drum, and simultaneously heating the wax or polystyrene to form a liquid which coats the phenol formaldehyde.  The wax or polystyrene may be heated by heating the additional phenol formaldehyde.  The pellets are removed by conveyers 22, 23 which may be cooled by jackets 24, to screens 27, 28 which separate the pellets from the fines.  The pellets in the barrel 30 may be ground and returned to the drum with the fines by the conveyer 18. The pellets may be cooled, heated or dried by using a jacketed drum to which a cooling or heating medium is supplied or by circulating air through the drum.  The Specification as open to inspection under Sect. 91 comprises p  also the subject-matter of Specification 654,272, [Group V], which is referred to.  This subject-matter does not appear in Specification as accepted.
Patent GB-871250-A (GB)
Title: Improvements in fluid flow control device
IPC: G05D7/01
Filed: 1957-10-24
Abstract: 871,250. Fluid-pressure servomotor control systems; valves. FARRIS FLEXIBLE VALVE CORPORATION. Oct. 24, 1957 [May 29, 1957], No. 33268/57. Class 135. A fluid flow-control valve comprises a flowcontrolling mechanism and a throttling mechanism for actuating the first mechanism interconnected by a first light and second heavy prestressed loading means, wherein the first loading means is effective for a preselected valve flow capacity range and is ineffective when the second loading means becomes effective for valve capacities outside the range. The pinchcock 25 is compressed between plates 27, 28 connected by chains 31, 32 passing over sprockets 33, 34, plate 27 being moved by pressure in chamber 36 above a diaphragm 16. The valve capacity or that fluid flow through the valve is to be kept constant for a valve opening within a range of 10% to 40% of the full opening stroke of the valve which range corresponds to 10% to 90% of the valve capacity. Air under a pressure setting a given valve capacity is supplied to passage 61 up to closed valve 60, the stem 62 of which forms a seat closed by a valve member 56 in diaphragm 24 controlling flow to atmospheric port 55, while a control air pressure responsive fluid flow through the valve is fed to passage 66 and chamber 51 between large diaphragm 22 and small diaphragm 23, both connected to valve member 56. Member 56 is connected to the valve operating diaphragm 16 via a first spring 45 in series with a heavier spring 43 prestressed between cup 42 and cup 44 abutting operating stem 29 and plunger 40 slidable in the stem. If control pressure at 66 increases, due to increased flow detected by e.g. an electric flow meter, diaphragms 22-24 move upward with stem 62 to open valve 60 allowing pressure air at 61 to pass via passage 54 to chamber 36 and act on diaphragm 16 to close valve 25, this pressure also acting downward on diaphragm 24 against spring 45 to reseat valve 60. A decrease in control pressure opens the exhaust valve 62, 56 to vent pressure in chamber 36 to atmosphere at 55 so that valve 25 opens and spring 45 recloses the exhaust valve. When diaphragm 16 is moved in an opening direction more than 40% of its maximum stroke, cup 42 abuts housing 14 so that spring 45 is compressed a maximum amount and no longer exerts any control and pressure in valve 25 opens the valve against the loading of spring 43, stem 29 and cup 44 sliding upward over plunger 40. The control part of the device is thus protected from overloading. Manual adjustment is effected via screw 63 acting on spring 57.
Patent GB-1475102-A (GB)
Title: Braided packing for a stuffing-box and method and machine for  its production
IPC: D04C3/08
Filed: 1974-07-27
Abstract: 1475102 Braiding; braiding machines H MERKEL 27 July 1974 33270/74 Headings D1C and D1K [Also in Division F2] A braided stuffing-box packing has filaments of a different material secured to the basic material of the braid solely in the region of that surface which forms the friction surface of the packing in use. Suitably the different, additional material is a low friction, high wear- and heat-resistant material such as P.T.F.E. or graphite fibres and the basic material may be asbestos filaments. Preferably the additional filaments are braided with the strands of basic material by confining the additional filament carriers 5.1 to 5.4 to driving wheels A to D associated with the surface of the packing in question. The basic strand carriers 1.1 to 4.8 have conventional single driving pins while the carriers 5.1 to 5.4 have double pins engaging in concentric tracking. A tubular braiding method may also be used.
Patent GB-1249967-A (GB)
Title: Improvements in or relating to waste gas burners
Inventor: SWITHENBANK JOSHUA
IPC: F23G7/08
Filed: 1970-07-09
Abstract: 1,249,967. Waste gas burner. J. SWITHENBANK. 9 July, 1970, No. 33306/70. Heading F4T. A waste gas burner 1 comprises an elongated tube 2, the lower end of which is provided with a flared air inlet 3 and with two rings of jets 4, 5 for injecting waste gases and steam respectively into the tube; the cross-section of the upper end of the tube is filled with a turbulence controlling matrix 6 and is surrounded by a cowl 7, a series of by-pass holes 8 being provided in the wall of the tube below the matrix. The matrix comprises concentric rings formed alternately of corrugated and plain strip metal, Fig. 2, and the cowl 7 is of truncated conical form with the smaller end sealed round the tube 2 below the by-pass holes 8. The mixture of waste gases, steam and entrained air pass up the tube 2, a fraction of the mixture passing through the holes 8 to burn on the rim of the cowl, thus providing a pilot flame, while most of the gases pass through the matrix and burn quietly. In alternative embodiments each ring of jets may be replaced by one jet, and/or the steam jet may be omitted. The waste gas burner may be supported from the ground on a stand, Fig. 3 (not shown), or alternatively it may be mounted on top of a flare stack burner, the air inlet being formed by a substantially annular gap between the burner and the stack, Fig. 4 (not shown).
Patent GB-410530-A (GB)
Title: Improvements in devices for carrying golf tees
IPC: A63B57/00
Filed: 1932-11-25
Abstract: 410,530. Brooches; attaching golftees to wearing-apparel &c. PHILLIPS, C. L. E. O. H. T., Clanwilliam House, Walmer, Kent. Nov. 25, 1932, No. 33390. [Class 43.] A device for carrying golf tees comprises a support a fitted with a safety pin fastener a<1> and carrying a plurality of sockets or tubes b, arranged parallelly or in fan shape, into which the tees c can be inserted. A pair of miniature golf sticks e or other ornament may be secured to the tubes.
Patent GB-176095-A (GB)
Title: Improvements in or relating to indicators for theatre and like seats
IPC: A47C1/13
Filed: 1920-11-26
Abstract: 176,095. Sharrocks, E. Nov. 26, 1920. Seats.-The back of a theatre or like seat is formed with a slot or pocket in which a label can be placed to indicate that the seat is engaged. 'The label when in use protrudes so as to be legible, two arrangements of slit and label being shown, and can be thrust into the pocket when not in use. A clip or the like may be fixed at the mouth of the pocket to hold the label in position.
Patent GB-874761-A (GB)
Title: Process for the production of a porous body of polypropylene
IPC: C08J9/24
Filed: 1957-10-28
Abstract: A process for the production of a porous body of polypropylene comprises subjecting polypropylene to solvent extraction and thereafter sintering the polypropylene.  The extraction can be effected in separate steps with at least two different solvents, e.g. acetone, ether, saturated aliphatic hydrocarbons and alcohols, used successively.  The process is particularly applicable to polypropylenes produced by the Ziegler process. Preferably the polypropylene, after extraction, has a molecular weight above 40,000. The sintering may be effected at temperatures up to 170 DEG C. and is preferably carried out in an inert or reducing atmosphere.  The material to be sintered may be used in a loose state or may first be shaped under pressure. Pressure may also be applied during the sintering.  In an example a polypropylene produced by the Ziegler process, and having a molecular weight of 75,000 is refluxed successively with acetone, ether and heptane, solvent being removed by heating after each stage.  The product is moulded and sintered at 100 DEG C. under 20 atmospheres pressure of hydrogen.  Reference has been directed by the Comptroller to Specification 856,735.ALSO:A process for the production of a porous body of polypropylene comprises subjecting polypropylene to solvent extraction and thereafter sintering the polypropylene.  The extraction can be effected in separate steps with at least two different solvents, e.g. acetone, ether, saturated aliphatic hydro carbons and alcohols, successively.  The process is particularly applicable to polypropylenes produced by the Ziegler process.  Preferably the polypropylene, after extraction, has a molecular weight above 40,000. The sintering may be effected at temperatures up to 170 DEG C. and is preferably carried out in an inert or reducing atmosphere.  The material to be sintered may be in a loose state or may first be shaped under pressure.  Pressure may also be applied during the sintering.  In an example a polypropylene produced by the Ziegler process, and having a molecular weight of 75,000, is refluxed successively with acetone, ether and heptane, solvent being removed by heating after each stage.  The product is moulded and sintered at 100 DEG C. under 20 atmospheres pressure of hydrogen.  Reference has been directed by the Comptroller to Specification 856,735.
Patent GB-446410-A (GB)
Title: Improvements in or relating to electric hot-plates
IPC: H05B3/70
Filed: 1935-12-04
Abstract: 446,410. Electric hot-plates. ELEKTRO-GERATEBAU GES., and FISCHER, K., Oberderdingen, W³rtemberg, Germany. Dec. 4, 1935, No. 33564. [Class 39 (iii)] In an electric hot-plate provided with heating resistances c embedded in grooves therein, the central zone of one third to one half of the external diameter of the plate is depressed so that it does not act as a supporting surface for a utensil on the plate and also is made thinner than the rest of the plate. The central zone may be formed by a disc i cast in the metal of the plate. The hot-plate may be formed of two concentric sections a and a<1> joined by a ring m of sheet metal cast in both of the sections. A ring o forming a support for the plate is cast in section a<1>. In an alternative construction, the whole of the plate is made in a single casting.