baber/WOPTO huggingface dataset:
Patent FI-20061027-A (FI)
Inventor: RINNE ANTTI
IPC: B03D1/14
Filed: 2006-11-22
Abstract: The invention relates to a rotor (1) for a flotation machine for dispersing air into slurry around the ro- tor, the rotor comprising a body (2) equipped with a set of blades (3). The body (2) is assembled from ra- dial sector modules (9). The rotor comprises fastening means (10) for joining the sector modules (9) to each other. In the method for forming a rotor, radial sec- tor modules (9) are produced, and the rotor body (2) is assembled from a number of sector modules (9). Fi- nally, in the method for maintenance of a rotor, a damaged sector module (9) is detached from the body (2) and replaced by a defect-free sector module.
Patent FR-1592851-A (FR)
IPC: H01L27/00
Filed: 1968-11-22
Granted: 1970-05-19
Abstract: 1,201,428. Electroluminescence. GENERAL ELECTRIC CO. 22 Oct., 1968 [24 Nov., 1967], No. 50128/68. Heading C4S. [Also in Divisions H1 and H5] A SiC electroluminescent PN junction diode comprises a SiC crystal the bulk of which is N-type containing a donor; the crystal has a diffused region next to one surface in which the donor concentration decreases towards the surface and an acceptor concentration which is greater than the donor concentration at the surface decreases inwardly from the surface, the concentrations being such that at the junction the donor and acceptor concentrations have substantial gradients in opposite directions. The diodes are grown by diffusing B and Al into N-doped α-SiC crystals. Concentrations and gradients are specified. Polished crystals 1b separated by porous graphite spacers 15 are placed in a graphite crucible 7 having dense and porous outer and inner walls 12, 13. The space between the walls is filled with a protective charge 14 of Si and C powder mixed with Al and B dopants, the B dopant may be boric acid. The crucible is heated in a graphite resistance furnace (see Division H5) in an argon stream at 1300‹, 1450‹ and 1600‹ C., each for 1 hour, then at the diffusion temperature, preferably 2200‹ C. At 1300‹ C. N diffuses out of the crystals, at 1450‹ C. the protective charge reacts to form SiC containing uniformly distributed B and Al. At 1600‹ C. further outgassing of the furnace and charge occurs. At 2200‹ C. the protective charge maintains a vapour pressure in the inner chamber which prevents dissociation of the SiC crytals whilst allowing B and Al to diffuse in and N to diffuse out, the surface concentrations of N, B and Al becoming equal to that in the charge. The charge may be reused and be of SiC initially. The crystals have a P-type layer on both sides, one of which is removed by grinding, then they are cut into square elements. A dispersion of Al in an organic solution containing Si is applied to the P-layer and heated to form a layer of Al-Si eutectic whilst a Au-Ta alloy contact is fused to the N-layer. The P-layer of the element is soldered or cemented using a Au-epoxy resin to a Au-plated metal base-plate of a transistor type header. A gold wire is bonded to the Au-Ta contact, alternatively Fe or NiCr alloy wire is fused to the N-layer. The header is enclosed by a metal cover with a lens or an all glass cap.
Patent GB-1051980-A (GB)
IPC: F22B7/06
Abstract: 1,051,980. Arrangements of water tubes in boiler flues; concentric heat exchanger tubes. SVENSKA MASKINVERKEN A.B. Aug. 4. 1964 [Aug. 2, 1963], No. 31242/64. Headings F4A and F4S. A steam or hot water boiler includes a plurality of heat exchanger units each comprising a water tube within a fire tube. In the embodiment shown a heat exchanger unit includes an outer fire tube 22 and a concentric water tube 21. Combustion gases flow through the annular space 25, and heat transfer is improved by pins 28 attached to the water tubes and arranged to be a close fit in the fire tube. Water passes to and from the water tube 21 from a water space surrounding the fire tube through tubes 26, 27. In a modified heatexchanger unit, Fig. 9 (not shown), pins 48 are fixed to the inside of the fire tube. In another modification, Fig. 10 (not shown), a ceramic plug 49 closes the space inside the pins 48 at the ends of the fire tube. A steam boiler incorporating the heat exchanger units, Fig. 1 (not shown), has a burner nozzle 17 which projects a flame into a chamber 14 from which combustion gases pass through the heat exchange units 20 to a smoke box 18. Steam is taken off from an outlet 30 and the entire boiler is tilted with the smoke box highest to improve circulation through the heat exchange units. In a hot water boiler, Fig. 5 (not shown), the boiler is tilted with the front end highest to cause water to circulate through the heat exchange units in the opposite direction to the gas flow.
Patent GB-1052211-A (GB)
IPC: F04B49/00
Abstract: 1,052,211. Reciprocating pumps. MASSEYFERGUSON Inc. July 25, 1963 [Aug. 3, 1962], No.29417/63. Heading F1A. A radial multi-cylinder pump is supplied with hydraulic fluid by a gear pump 14 and delivers to a variable demand 60 such as an automatic transmission for road vehicles. The inlet pressure is governed by an adjustable spring loaded valve 22 and the outlet pressure acts upon a piston 46 in a chamber 52. The piston 46 bears on a valve member 40 and an increase in delivery pressure will move the member 40 so as to throttle the pump inlet valve port 64. An excessive build up of delivery pressure opens a valve 86 and pressure liquid flows into a chamber 82 to move the member 42 so as to close the valve port 64. The chamber 82 is connected to a sump 10 through a connection 88 and a valve 90 which includes a restricted orifice 92 to damp any tendency of the member 40 to oscillate during rapid pressure changes. The demand 60 may represent closed circuit hydraulic devices exhausting through a connection 62, open circuit devices exhausting through a connection 63 or a combination of both types of devices.
Patent GB-1052280-A (GB)
IPC: F26B5/06
Abstract: 1,052,280. Freeze drying. MITCHELL ENGINEERING Ltd., and P. B. MASON. Nov. 23, 1964 [Nov. 22, 1963], No. 46271/63. Heading F4G. In apparatus for freeze-drying fluids, the fluid is frozen in a drying chamber 10, Fig. 1A, in layers of predetermined thickness on tubes 11, which have refrigerant passed therethrough from an inlet header 12 to an outlet header 13, and the chamber is then exhausted through a duct 14 connecting the chamber 10 to a condenser chamber and vacuum pump (not shown) to effect sublimation of at least one constituent of the fluid, whilst maintaining the flow of refrigerant at a temperature below the fusion or melting point of the frozen liquid at least until substantial drying has been effected. The fluid is frozen on the tubes 11 by immersing them in a tank 27 of the fluid, which tank is thereafter removed and a removable bottom closure and valve is substituted for the drying portion of the process, and a scraper 21 in the fan of a perforated plate on a rotating shaft 22 is centrally mounted in the chamber 10. The tubes 11 are cooled by a liquid heat transfer medium, e.g. brine, in a circuit which is cooled by a primary gas heat transfer circuit which itself is cooled in stages. The brine from the pipes passes to heaters which absorb the heat therefrom and temperature controlled actuating throttle means control the brine temperature at least during sublimation. In a modification, wherein continuous operation is achieved, a closed loop tubular element 81 through a heat transfer medium is circulated, moves in a closed path in the direction A through a chamber 80a wherein a liquid to be dried surrounds the element and is frozen thereto as at 87. The element thereafter passes into a vacuum drying chamber 80, about which a heating jacket may be positioned, and connected to a source of vacuum, the dried material 87 being scraped off the element by a device 88 into a hopper 89 and container 90 through a vacuum seal valve 91.
Patent GB-1052420-A (GB)
IPC: H04Q11/04
Abstract: 1,052,420. Automatic-exchange systems. WESTERN ELECTRIC CO. Inc. May 28, 1964 [June 4. 1963], No. 22046/64. Heading H4K. In a time division telephone system ringing control signals are fed through the time division switching network, and the ringing signal is returned to the switching network when the call is answered. The invention is described with reference to a party line system and the circuitry, in addition to ringing the right party for incoming calls, identifies the party originating an outgoing call for metering purposes. Incoming calls.-Positive or negative ringing control pulses, according as tip T or ring R parties are to be rung, are applied by signal source 65 via the sampling switch 42 every other time it is opened and are smoothed by filter 41. One of transistors 45, 46 conducts to operate relay 10 or 20 and connect ringing current from a source 21 to T1 or R1 respectively and disconnect the line relay 30. The corresponding bell 6, 11 is thus rung. When the called party goes "off-hook" 7-1 and 7-2 close and ringing current is connected to one of primaries 27-2; 27-1, but does not energize the second bell because of the impedance 8 of the switch-hook. Ringing current thus induced in secondary 27-3 and limited by Zener diodes 12, 13 is returned to bus 81 and is detected by 66 every other opening of switch 42 (i.e. those when ringing control pulses are not being applied) to indicate that the call has been answered. Since either 45 or 46 only conducts during the ringing interval and not during the silent interval, ringing current cannot be returned if the called party goes off-hook in a silent period. If this happens relay 30 operates and bias source 51 overcomes source 58 to forward bias diode 57 and return pulses 60 from control 43 over condenser 56 and an auxiliary bus 91 to the scanner 64, which, knowing that a party is being rung realises that the party has answered. For a four-party line either positive or negative ringing current may be applied to either conductor T1 or R1. Outgoing calls.-Idle condition of the line is sensed once every 500 cycles of the time division switching network by pulses 60 from control 43 closing sampling switch 42. When either party goes off-hook contacts 7-1, 7-2 are closed, completing the line loop and operating line relay 30 to return pulses 60 to the control via bus 91. A time slot is allotted to the line and corresponding pulses 60 are applied to sampling switch 42 every cycle and returned via bus 91 for the call duration. Capacitor 54 forward biases 57 during dialling. Identification of calling party.-Return of pulses 60 over bus 91 causes control signal source 65 to apply positive control pulses via bus 81 to the line circuit. Transistor 45 conducts to operate relay 10 to hold relay 30 over 10-7 whilst breaking the calling loop. If R initiates the call this prevents return of pulses 60 to control 43. If T initiates the call 7-3 is closed and relay 20 is operated and the pulses 60 are returned. When the called party is identified the control pulses cease, 10 and 20 drop out and the calling loop is re-established.
Patent GB-1054117-A (GB)
IPC: G21C3/64
Abstract: 1,054,117. Carbonaceous artefact. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Nov. 5, 1963 [Nov. 6, 1962], No. 41924/62. Heading C1A. [Also in Division C6] A carbonaceous artefact comprises dispersed inclusions such as nuclear fuel particles within a matrix formed by particles of carbon smaller in size than the inclusions and cemented to each other and to the inclusions by carbon formed by decomposition of a carbonaceous material, e.g. by pyrolytic decomposition. The inclusions may each have at least one protective outer skin of carbon or a refractory carbide, e.g. SiC, and each inclusion may have an outer skin of refractory carbide spaced from the core by a carbon skin. An additional skin of carbon may surround the carbide skin. The particles of carbon are preferably of petroleum coke of a size less than 150 mesh (B.S.S.). The manufacture of a fuel element containing 93% enriched UC 2  fuel particles coated with pyrolytic carbon is described by way of example. UC 2  spheres, 178 to 211 microns in diameter, were coated at 1850‹ C. in a fluidized bed with a carbon deposit 100 microns thick and mixed with a graphite powder containing 14% by weight of a phenolformaldehyde resin. This powder was made by heating a 20 to 30 micron petroleum coke powder to 2800‹ C., cooling it, mixing subsequently with the resin, and crushing to pass - 300 mesh. The mixture was pressed in a die at 250 p.s.i. and the resin cured at 180‹ C. whilst the pressure was maintained. After removing the element from the die, it was heated to 900‹ C. in a stream of nitrogen and benzene, the benzene partial pressure being 266 mm. In this operation, the resin was carbonised and pyrocarbon deposited in the pores between the fuel particles and the carbon particles. The finished element contained 62% by volume of composite particles and had a density of 1.89 g/c.c. The invention is also applicable to fuel elements for Th-fuelled reactors in which it is necessary for the fuel elements to have a high metal concentration and for the coated fuel inclusions to be in close contact with one another.
Patent GB-1054888-A (GB)
IPC: D21F3/02
Abstract: 1,054,888. Drying apparatus. J. P. MAUPAS. June 18, 1965 [June 19, 1964], No. 25967/65. Heading F4G. [Also in Division D2] A wet press comprises spaced rollers 16, 18, a press roller 48 in tangential rolling fluid-tight contact with rollers 16, 18, the gap 22 between the three rollers being enclosed at the ends and connected to a suction pump to draw water out of the felt and paper web running over the top of the gap, and a press roller 50 pressing against the paper web and felt, the axes of rollers 16, 48 and 50 lying in one plane. The gap 22 is enclosed at the ends by chambers 24, Fig. 2 (not shown), the rollers 16, 18 being of reduced diameter at the ends so that sealing belts 30 may run over chamber 24 and rollers 16 and 18. In modifications there may be a press roller pressing against roller 18, a further roller 19 spaced from roller 16 and with a suction compartment in between, or a felt above the paper web with two spaced rollers between the felt and roller 50, one of the spaced rollers lying in the same plane as that of rollers 16, 48 and 50.
Patent GB-1086203-A (GB)
Abstract: 1,086,203. Manufacturing resistors. CORNING GLASS WORKS. Sept. 28, 1964 [Oct. 3, 1963], No. 39401/64. Heading H1S. The Specification describes with reference to drawings (Figs. 5-28, not shown), a machine for manufacturing fixed resistors. The resistor is assembled from three parts, Fig. 2, comprising two leads 110 each having a conducting disc 116 coated with a glass film 120 and a resistor blank 114 formed of a cylindrical glass substrate on which a conductive film 122 of metallic oxide is deposited. This film may be spiralled. Electrical continuity between the blank 114 and leads 110 is obtained by applying bands 124 of conductive material, Fig. 3, the preferred method being to spray silver powder by means of a plasma jet torch. The resistor is hermetically sealed by applying glass powder by a plasma jet torch to form a coating 126, Fig. 4, sufficient heat being applied to fuse the silver frit of bands 124 and also to fuse the glass films 120 to the glass blank 114. The machine includes a disc rotatable about a horizontal axis and stepped round through eight operating stations having a dwell period at each station. Eight rotatable spindles are disposed equi-angularly on the disc and parallel to the axis of the disc rotation, each spindle driving a pair of chucks. Each pair of chucks holds a pair of leads 110 with a blank 114 therebetween. The eight stations correspond to eight manufacturing operations, viz. component parts loading station, pre-heating station, conductive material application station, encapsulating material application station, three encapsulating material annealing stations and a component unloading station. The annealing stations may concurrently serve as testing, marking, and sorting stations. Except when a resistor is at the loading or unloading station it is continuously rotated by the pair of chucks.
Patent GB-1121670-A (GB)
Abstract: 1,121,670. Spinning machines. J. J. KEYSER. 9 Dec., 1965 [15 Jan., 1965], No. 52216/ 65. Headings DID and D1F. In a spinning machine the drafting rollers 8, 4, 9 of each drafting head are mounted at one end on an assembly plate 1 with their axes at right angles to the length of the machine. Thus by clutches the drive to individual heads can be disconnected and roving can be threaded through without dismantling any of the drafting elements. The roller axes may extend horizontally or vertically on any position between. In Fig. 4 (not shown) a number of drafting heads are arranged in fan shaped manner so that the rovings issuing therefrom travel the same distance to a common guide where they are combined. Each drafting head is made up on an individual assembly plate 1 (see also Fig. 11 not shown) in which are a series of mounting positions for rollers, sliver guides &c. Thus any required drafting arrangement can be assembled on a plate, see Figs. 1, 2, 3 not shown. The rollers comprise axles 18, chain driven behind the assembly plate and roller shells 4, mounted on the axles; thus the roller shells can be exchanged to provide different types of roller, see also Figs. 6, 7, 8 not shown. In Fig. 1, not shown, a fluted roller (4) is provided with a jacket (5) of flexible, high friction material. A roving condenser and traversing guide (6), see also Fig. 5 not shown, is mounted by rods 7 on a plate 40 which is reciprocated by a cam 47 associated with the drive to one of the rollers. In Fig. 10 the assembly plate 1 is mounted on a suction duct 26 and tubes 49 connect the duct with the drafting area which is covered by a hood 13 so as to clean the drafting elements. Hood 13 is split along its length so that roving may be threaded therethrough and so that the portions thereof may be hinged back; it is of transparent material. A suction nozzle 30 is provided with slits 43 through which the roving runs. Blowing as well as suction means may be provided in the drafting zone. The roller bearings may be mounted in blocks slidable in slot in the plate 1, see Fig. 12 not shown, and may be adjustably weighted by screw and spring means as shown in Fig. 12 or pneumatically or hydraulically. In Fig. 3, not shown, drafting belt 10 is engaged and guided by a tiltable element (16).
Patent GB-1136923-A (GB)
IPC: C07D301/19
Abstract: 1,136,923. Epoxidation. ATLANTIC RICHFIELD CO. 2 Dec., 1965, No. 51305/65. Heading C2C. Epoxides are prepared by the liquid phase reaction at 50-200‹ C. of an olefinic compound with a hydroperoxide ROOH, where R is an optionally substituted alkyl, alkenyl, aryl, alkaryl, aralkyl, cycloalkyl or cycloalkenyl group, in the presence of a catalyst which is added to the reaction mixture as a compound of molybdenum. Specified olefinic compounds include mono- and poly-olefinic cyclic and acyclic hydrocarbons, unsaturated acids, esters and alcohols. Preferred hydroperoxides are tbutyl and cumene hydroperoxides. The catalyst may be added in the form of an organic or inorganic compound of molybdenum, preferably as a salt of a Mo heteropoly acid, e.g., sodium silico-12-molybdate. The reaction is preferably effected in the presence of a solvent. The hydroperoxide may be formed in situ by molecular oxygen oxidation of a portion of the olefin to be epoxidized. Reference has been directed by the Comptroller to Specifications 1,060,122 and 1,074,330.
Patent GB-1225351-A (GB)
IPC: B41F35/04
Filed: 1967-04-01
Abstract: 1,225,351. Inking mechanism. LINOTYPE & MACHINERY Ltd. 25 June, 1968 [1 April, 1967], No. 15034/67. Heading B6C. The inking roller 8 of a priintng press is cleaned in situ by a unit which comprises an adjustable wiping blade 9 mounted on a body 1 carrying an ink collecting trough 7, which may be readily fixed to or removed from the press. The blade 9 may be pre-set relative to the roller 8 by screw means 12 and 13 and the body carries four normally protruding spring-loaded plungers 15 which are connected to a rotatably mounted rod 22 by cables 21. For plunger withdrawal into the body the rod 22 is rotated such that the cables 21 are wound upon the rod. When the unit is to be filled to or removed from the press the plungers are withdrawn into the body 1 by rotating the rod 22 and thus winding the cables 21 thereon. Holes 26 to receive the plungers are formed in the frame walls 2 and 3 of the press. In a second embodiment a pivotably mounted lever is used to withdraw the cables 21 each pair of plungers (i.e. left hand or right hand Fig. 1) being connected to the lever on the opposite side of the pivot to the other pair.
Patent GB-1226282-A (GB)
IPC: B05D3/06
Filed: 1969-05-14
Abstract: 1,226,282. Electron-cured coatings. FORD MOTOR CO. Ltd. 14 May, 1969 [1 July, 1968], No. 24515/69. Heading B2E. [Also in Division C3] Substrates are coated by applying thereto a film of a paint binder and curing the film by the action of an electron beam, said paint binder comprising a solution, in one or more liquid vinyl monomers (i.e. monomers containing the group CH 2 =C<), of a binder resin which is a vinyl copolymer having pendent from carbon atoms of the principal carbon-to-carbon chain two or more diester side chains of the formula: in which X is a divalent alkylene, cycloalkylene or polyalkyleneoxy group and Ac is an olefinically unsaturated acyl group, e.g. an acrylyl or methacrylyl group. Suitable vinyl monomers include methyl methacrylate, ethyl acrylate, butyl acrylate, butyl methacrylate, styrene, acrylonitrile, methacrylonitrile, acrylic acid and methacrylic acid. The vinyl copolymer component is obtained by reacting a copolymer having side chains of the formula (where X is as defined above) with an olefinically unsaturated acyl halide, preferably in an amount of 20-95% of the stoichiometric. The paint binders may include finely divided pigment and/or particulate filler, e.g. mineral pigment or carbon black. In Examples, the vinyl copolymer components are obtained by reacting acrylyl or methacrylyl chloride with copolymers of methyl methacrylate, ethyl acrylate and a hydroxy-monomer selected from 2-hydroxyethyl acrylate or methacrylate, 3-hydroxypropyl acrylate or methacrylate, decamethylene glycol monomethacrylate, 1, 2-cyclohexylene glycol monomethacrylate, diethylene glycol monomethacrylate and tetraethylene glycol monomethacrylate; and with similar copolymers in which the methyl methacrylate is replaced, wholly or partly, by acrylonitrile, styrene, acrylic acid or methacrylic acid, or in which the ethyl acrylate is replaced by styrene, O-chlorostyrene, p-bromostyrene, n-butyl vinyl ether, vinylidene chloride, methacrylonitrile or vinyl pyridine; and with a styrene-maleic anhydride copolymer (1:1 molar) which has been reacted with ethylene glycol. The acylated copolymers are dissolved in the following monomers: (a) methyl methacrylate, (b) a mixture of methyl methacrylate, styrene and nbutyl acrylate, (c) a mixture of styrene, ethyl acrylate, n-butyl methacrylate and methacrylic acid, (d) a mixture of methyl methacrylate, acrylic acid, acrylonitrile and n-butyl methacrylate, and (e) a mixture of styrene and ethyl acrylate. The paint binders may be applied to the substrate by conventional means, e.g. spraying, roll coating, curtain coating or brushing, suitably in a thickness of from 0.1 to 4 mils. Curing is advantageously effected with a cathode ray tube electron accelerator producing a beam of energy 100,000 to 450,000 electron volts. In Examples the paint binders are applied to substrates of acrylonitrile-butadiene-styrene (ABS) copolymer, wood, aluminium, steel, paper and glass.