baber/WOPTO huggingface dataset:
Patent GB-1468698-A (GB)
Title: Fluorescent gas analyzer
IPC: G01N33/00
Filed: 1974-08-14
Abstract: 1468698 Photo-electric gas analysis  THERMO ELECTRON CORP 14 Aug 1974 [10 Sept 1973] 35786/74 Heading G1A A fluorescent constituent of a gaseous mixture is measured by repetitively flash illuminating a sample of the mixture, photo-electrically detecting the fluorescence radiation emitted and integrating the detector output over the duration of each flash, the voltage resulting therefrom being sampled and used to generate a continuous signal. As shown, the sample is fed by pump 13 into a sample chamber 11, which is illuminated from one end by a Xenon flash tube 41. For monitoring SO 2 in stack gases, this may be a strong ultraviolet emitting tube, an interference filter 47 centred at 2200A with a 200A pass band being provided. The slit shaped beam defined by mask 43 is focused by lens 45 just in front of the detector, mounted orthogonal to the input beam, and provided with a glass filter 51 passing the characteristic SO 2  fluorescence wavelength, being centred at 3600 with a pass band of 1000. A light trap 53 reduces backscatter of light, so that essentially fluorescence radiation reaches the detector, a photo-multiplier. The flash tube is triggered by circuit 59 under control of a free-running multi-vibrator 57 at 200 msec intervals, for 200Á sec duration. Capacitor C1 is recharged between intervals. The resultant fluorescence radiation pulses have similar characteristics and repetition rate to the excitation flashes and are integrated at C2, which is discharged between successive flashes. After buffer amplification at 63, and amplification in range selection amplifier 65, the voltage level is sampled by circuit 71 under control of multi-vibrator 67, which  operates on the trailing edge of the multi-vibrator 57 pulses. The step-mid change in the level held in circuit 71, as changes in SO 2  content of the mixture occur, is smoothed at 73 before recording on a chart or indication on meter 75. Dark current adjustment at R11 is performed with a SO 2 -free sample e.g. ambient atmosphere supplied from conduit 17, the gas under test being supplied via 15. If desired, a reference sample containing the constituent to be measured in known proportion, is supplied from conduit 19.
Patent GB-917918-A (GB)
Title: Corrugated toothed connector plate
IPC: F16B15/00
Filed: 1961-10-05
Abstract: 917,918. Spiked plates. SANFORD, A. C. Oct. 5, 1961 [Nov. 10, 1960], No. 35868/61. Addition to 898,057. Class 89 (2). The plate of the parent Specification is improved by forming the teeth in a corrugated plate which is substantially flattened by pressing the teeth into wood, the teeth tilting laterally to compress the wood fibres the resilience of which holds the teeth in position. The teeth may have a substantially upright edge 15 and two sloping edges 14, 16 meeting at the the point 17. The corrugations may have a curved or straight-sided section.
Patent GB-833517-A (GB)
Title: A fiber-glass yarn and method of forming the same
Inventor: NOVAK IZADOR JACOB
IPC: C03C25/465
Filed: 1956-11-26
Abstract: <PICT:0833517/IV(c)/1> A fibre glass yarn comprises a multiplicity of continuous filaments coated and spaced by a dry residue from a liquid colloidal dispersion of chrysotile asbestos fibres of 0.02 to 0.05 microns diameter.  Coating compositions specified are aqueous dispersions of the fibre obtained with the aid of dioctyl sodium sulphosuccinate.  In one case the composition comprises water, asbestos fibres, dioctyl sodium sulphosuccinate and toluene.  The composition may also include starch, polyvinyl alcohol, carboxymethyl cellulose, polyvinyl acetate, oily lubricants, vegetable oils, silicone oils, linseed oil, rubber, resins, clay, alumina, silica, barytes, whiting or iron oxide, ultramarine or coloured lakes, polyvinyl chloride, polystyrene, polyacrylates or graphite.  The asbestos fibres may be dyed previously, or the coated yarn may be dyed.  As shown, glass filaments 9 emerging from a spinneret 10 are solidified by an air or water spray 12, coated by an applicator roll 13 and wound upon a mandrel 11 after passing through a condenser 14, the coating being applied while the filaments are still spaced apart. Specification 689,692 is referred to.
Patent GB-1242668-A (GB)
Title: Inhibition of slime in paper mill water and biocidal compositions particularly for use therein
IPC: C02F1/50
Filed: 1969-07-17
Abstract: 1,242,668. Slime control agents containing dihalopropionaldehydes. A. SCHWERDLE and M. SCHWERDLE [trading as VINELAND CHEMICAL CO.], 17 July, 1969 [18 July, 1968], No. 36182/69. Heading ASE. A method of inhibiting the formation and growth of slime in a paper mill water system comprises the use of a slime control agent which is 2,3-dichloro-propionaldehyde and/or 2,3-dibromopropionaldehyde. Other slime control agents which also may be present are 1,4- bis-bromacetoxy-2-butene; 1,4-bis-bromacetoxy-2-butyne; 5-dibromacetoxy-methyl dioxane-1,3; 2-oxo-5-dibromacetoxymethyl dioxane-1,3; hydroxyphenylbromacetophenone; and' aryl bromacetates. Epichlorohydrin or epibromohydrin may be included as stabilizer.
Patent GB-970533-A (GB)
Title: Improvements in adjustable storage racks
IPC: A47B57/40
Filed: 1963-09-13
Abstract: 970,533. Rackstands. PALMER-SHILE CO. Sept. 13, 1963 [May 31, 1963], No. 36198/63. Addition to 950,915. Headings A4B, A4H and A4W. In a modification of the rack of the parent Specification a locking device 50 to prevent dislodgement of a hook from its slot has a locking portion 52 of rectangular shape with arcuate sides 54, 56 pivoted by a rivet 78 to a tooth 72 of rail 62 and engageable between one of the slotted parts of upright 64 and the edge of the tooth to prevent disengagement of the hook from the slotted upright. Specification 930,984 also is referred to.
Patent GB-1084916-A (GB)
Title: Fuel injection device
Inventor: HILL JOHN HUNTER
IPC: F23R3/20
Filed: 1964-09-04
Abstract: 1,084,916. Gas turbine jet engines; reheat equipment. CONTINENTAL AVIATION & ENGINEERING CORPORATION. Sept.4, 1964, No.36429/64. Headings F1G, F1J and F1L. The invention relates to combustion equipment comprising an annular casing defining a combustion chamber and a fuel supply device which comprises an annular fuel manifold from which extend radially inwardly into the combustion chamber a plurality of straight fuel spray nozzles. The spray nozzles are removably secured to the fuel manifold. The invention is described with reference to reheat combustion equipment of a gas turbine jet engine, the reheat fuel being pyrophoric. The reheat combustion chamber is defined by a casing 14 and the annular fuel manifold 10 is disposed therearound. A plurality of fuel spray nozzles 12 are releasably secured to the manifold by locking means 13, the spray nozzles extending radially inwardly into the combustion chamber through openings in the wall of the casing 14. Each spray nozzle is formed with openings 17 and is secured to the manifold 10 by a screwed coupling 13A, 13B. A bush 20 is located within each opening 18 in the casing 14 by means of a pair of flange members 19, 21 secured to the casing by bolts 23 and the spray nozzle 12 passes through the bush with clearance to permit sliding movement therein. A troughshaped flame stabilizing member 24 is associated with each spray nozzle, being secured to the flange 19.
Patent GB-1188580-A (GB)
Title: Improvements in or relating to Strand Tensioning Apparatus
IPC: D02G3/32
Filed: 1967-08-08
Abstract: 1,188,580. Textile drafting arrangement. MAREMONT CORP. 8 Aug., 1967 [9 Aug., 1966], No. 36432/67. Heading D1D. Apparatus for applying tension to a strand comprises forwarding rollers 12, 14 to which the strand passes from a rotatable member 80 mounted on a shaft which can retard the rotatable member via a one way clutch. As shown a stretch yarn from a package 32 is fed between the final drafting rollers 12, 14 of a head, drafting rovings from packages 18, so as to be twisted into the final yarn. In its passage to rollers 12, 14 the yarn is passed about a pulley 80 which has a zig-zag groove therein to prevent the yarn slipping. The pulley is mounted on a shaft which is driven from the drive shaft of roller 14 at a selectable fraction of the speed of roller 14. The one way clutch between pulley 80 and its driven shaft is such that pulley 80 cannot be rotated at a greater speed than the shaft by the pull in the yarn but can rotate at a slower speed than the shaft. Thus in normal operation the pulley is rotated at a constant speed such that draft is applied between the pulley and rollers 12, 14 but on breakage of the yarn between the pulley and rollers 12, 14 the pulley stops under the influence of a device which applies a small adjustable drag on the pulley while its shaft and any other pulleys 70 on the same shaft continue to rotate. The pulleys 70, 80 are preferably mounted on stub shafts as shown to facilitate threading up but they may be mounted on a continuous shaft running the length of the machine.
Patent GB-952657-A (GB)
Title: A process for the production of substituted ureas and semicarbazides
IPC: C08G18/10
Filed: 1961-10-11
Abstract: Polyureas and polysemicarbazides of the formula: R111-9NHCONRR1) #c is 2 or more; R is H, -(CnH2nO)mH, -NH2, -NH Alkyl, -NH-(CnH2nO)mH or -N([CnH2nO]mH)2; R1 is H, alkyl or -(CnH2nO)mH; R111 is an organic radical; n  is an integer of from 1 to 4 and m  is an integer of from 1 to 20, are prepared by reacting a polyisocyanate of the formula: R111(NCO)#c in an alcoholic solution and at a temperature of from -20 DEG C. to +30 DEG C. with 1 mol. per NCO group of a compound of the formula:  R-NH-R1.R111(NCO)#c may represent tetramethylene, hexamethylene, cyclohexylene, phenylene, toluylene or diphenylmethane diisocyanate, tris-(para-isocyanatophenyl)-thiophosphate or a polyisocyanate obtained by reacting a polyisocyanate with a polyether, polythioether, polyacetal, polyester or polyhydroxy compound having a molecular weight of up to 3,000.ALSO:Polyureas and polysemicarbazides are prepared by reacting a polyisocyanate in an alcoholic solution and at a temperature of from -20 DEG C. to +30 DEG C. with 1 mol. per NCO group of a compound of the general formula: R-NH-R1, wherein R is H, -(CnH2nO)mH, -NH2, -NH Alkyl,-NH-(CnH2nO)mH or -N([CnH2nO]mH)2; R1 is H, alkyl or -(CnH2nO)mH; n is an integer of from 1 to 4 and m is an integer of from 1 to 20. The polyisocyanate starting material may be tetramethylene, hexamethylene, cyclohexylene, phenylene, toluylene or diphenylmethane diisocyanate; tris-(para-isocyanatophenyl)-thiophosphate or a polyisocyanate obtained by reacting a polyisocyanate with a polyether, polythioether, polyacetal, polyester or polyhydroxy compound having a molecular weight of up to 3,000.
Patent GB-344038-A (GB)
Title: Improvements in or relating to door closing apparatus
IPC: E05F3/10
Filed: 1929-11-28
Abstract: 344,038. Door springs and checks. WEBBERLEY, D. J., 33, Lowther Hill, Forest Hill, and ADAMS & SON, Ltd., J., 105, Union Street, Southwark, both in London. Nov. 28, 1929, No. 36572. [Class 65 (i).] In a spring-closing apparatus for swinging doors, the door pivot D, Fig. 1, carries a cam C on the underside of which is mounted a roller f<1>. Two claws G. H, pivoted at J, are pressed into engagement with the roller f<1> by adjustable springs K, K<1> resisting any turning of the door pivot D in either direction from its closed position. In the closed position, the claws come against stops k, and their ends overlap, as shown. The check consists of a piston N working in a cylinder M, the piston-rod being slotted at n<3> to slide on the pin J and carrying a roller n4 in engagement with the cam C. When the door is opened, compressing the spring K or K<1>, the piston-rod is forced to follow the cam C by a spring P, and oil is drawn from the box into the cylinder M through passages, controlled by ball valves, in the piston N. When the door closes under the action of the compressed spring, the piston is forced in, and the liquid in the cylinder is forced through a passage controlled by a screw valve m2 to regulate the resistance. In a modification, Fig. 8, the piston-rod N is linked to a lever T, pivoted to the side of the box and carrying the roller n<4>.
Patent GB-1307639-A (GB)
Title: Process for impregnating porous inorganic subsstrates or roadways
IPC: C08G59/32
Filed: 1970-07-28
Abstract: 1307639 Proofing porous inorganic substrates CIBA-GEIGY AG 28 July 1970 [5 Aug 1969] 36586/70 Heading DIP Porous inorganic substrates, such as roadways, are protected against damage by water, salts fuel oil &c by impregnating them with self-curing, liquid compositions containing (I) a liquid di- or poly-glycidyl ether of di- or poly-(#-methylglycidyl)-ether of an aliphatic diol or polyol having from 2 to 12 carbon atoms, and (2) a cycloaliphatic or cycloaliphatic-aliphatic polyamine which is liquid at room temperature and which contains at least one primary amino group. Known curing accelerators such as phenols, Munnich bases or heterocyclic amines may optionally be added to the impregnating mixture and, in addition, penetration into the substrate may be improved by the addition of surfaceactive reagents.
Patent GB-1082949-A (GB)
Title: Laminates
Inventor: LANT THOMAS PAUL RICHARD
IPC: B32B27/00
Filed: 1964-09-07
Abstract: A laminate comprises a layer of a thermoplastic polymeric material comprising a polymer or copolymer of vinyl chloride, styrene, or an unsaturated carboxylic acid or an ester thereof, bonded to a preformed sheet of a non-brittle material having a flexural modulus of at least 5 x 105 lb./sq. in., the thickness of the sheet of said non-brittle material being greater than 1/10th of the thickness of said layer of thermoplastic polymeric material.  As described the thermoplastic polymeric material is a polymer of an ethylinically unsaturated carboxylic acid or an ester thereof, or is a copolymer of at least one ethylinically unsaturated carboxylic acid or ester thereof optionally with other ethylenically unsaturated monomers. Suitable acids include acrylic and methacrylic acids, and suitable esters include the alkyl acrylates and methacrylates having from 1 to 10 carbon atoms in the alkyl radical.  Preferably polymethyl methacrylate or a copolymer of methyl methacrylate with an alkyl acrylate such as ethyl acrylate or 2-ethyl hexyl acrylate is used. The non-brittle material is plywood of at least 5 plies or a glass-fibre reinforced polyester resin, the glass fibre being in the form of chopped strands or rovings or mat or woven cloth. Alternatively the nonbrittle material is fibrous material e.g. fibres of asbestos, cotton sisal or jute, or synthetic fibres e.g. of polyamides or linear polyesters such as polyethylene terephthalate, impregnated with a suitable medium, e.g. polyester, phenol formaldehyde, epoxy, acrylic, or silicone resin.  The non-brittle material sheet is preferably 1 to 10 times as thick as the thermoplastic layer with a flexural modulus of at least 8 x 105 lb./sq. in.  The laminate may be made by casting the thermoplastic polymeric material in molten form onto the sheet of non-brittle material, or by casting a syrup containing a monomer or monomers from which the thermoplastic polymeric material is to be formed onto one surface of a sheet of the non-brittle material and causing or allowing the syrup to polymerise.
Patent GB-767791-A (GB)
Title: Means for measuring and/or recording mechanical forces or their time derivatives
IPC: G01L1/12
Filed: 1954-12-20
Abstract: 767,791. Measuring force electrically. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. Dec. 20, 1954 [Dec. 28, 1953], No. 36703/54. Class 40 (1). Apparatus for measuring and/or recording mechanical forces or their time derivatives comprises a body of magnetic material subjected to the force and partly or wholly surrounded by two coils, the winding planes of the coils being arranged to give substantially zero mutual inductance in the unloaded condition. One of the coils is connected to an A.C. source for measuring forces, or in the case where the time derivative of a force is to be measured is connected to a D.C. source, while the other coil is connected to a voltage sensing instrument for measuring and/or recording the value in question. In one embodiment (Fig. 1), the coils 6, 7 which are at right angles to one another are wound in slots 3, 4 and 2, 5 in the laminated body 1 and the force P is applied at 45 degrees to the plane of each coil. The permeability in this direction is increased or decreased with compressive stresses according to whether the material exhibits negative or positive magnetostriction, the resultant distorted exciting field 8 threading the measuring coil 7. The magnetic sheets may also be octagonal (Fig. 3, not shown), with the coils wound round them. They may be clamped together by bolts inserted through punched-out holes in the sheets, but preferably are clamped between a pair of plates or stuck together. To permit even stress distribution adjacent the coils under tensile or compressile stresses the sheets may be formed with narrow end parts through which the load is applied. A plurality of pairs of coils may be used in conjunction with a single set of sheets as shown in Fig. 6, each sheet being formed with narrow parts adjacent each coil assembly. The measuring coils are connected in series so that the meter indicates total load provided the voltage induced in a coil is proportional to load which is approximately true if the exciting current saturates the core and only the fundamental frequency voltage is measured. Any slight voltage induced in the measuring coils at zero load due to the shape of the laminations or an isotropy of the material may be compensated by a voltage adjustable in phase and magnitude, or an additional voltage may be obtained from additional windings in the exciting coil slots. Alternatively, the angle between the windings may be selected to give zero inductance.
Patent GB-927315-A (GB)
Title: Process for the lixiviation of uranium-bearing ores
Inventor: MOURET PIERRE
IPC: B03D1/002
Filed: 1959-10-30
Abstract: <PICT:0927315/III/1> Uranium-bearing ores are lixiviated by allowing a dilute aqueous alkali metal, generally sodium, carbonate and/or bicarbonate, to seep uniformly through a mass of crushed ore without filling the interstices between the particles of ore, the volume of solution passing through the mass being between 0,5 and 10 litres per square metre of superficial ore surface per hour.  The alkaline solution may contain about 5 grams of alkali metal carbonate per litre of solution.  The ore is coarsely crushed and the proportion of fines of less than 1 mm. in diameter should be low.  The grains are normally less than 1 cm. in diameter.  Extended leaching times which may be up to several months, with recycle of the lixiviating solution, may be employed.  The ore may be placed in the open on a hill side adjacent to the mine and formed into a heap, as shown in Fig. 2, supported by a wall 18.  A layer of broken pottery 19 facilitates the draining off of the solution which is supplied through sprinkler 17.  Porous pipes 20 assist aeration.  The alkaline solution supplied is recycled after passage through ion exchange columns to recover the uranium values.  In order to obviate the effects of rainfall, the concentration of the alkaline solution supplied from a tank 13 may be controlled by decreasing the quantity of water supplied to tank 13 in accordance with the rainfall.  The latter may be assessed by measuring the change in resistivity of a solution, such variations in resistivity controlling a valve through which the dilution water is supplied to vessel 13.
Patent GB-629546-A (GB)
Title: Improvements relating to saddles for lathes and similar machine tools
IPC: B23Q1/26
Filed: 1946-12-16
Abstract: 629,546. Lathe details. DEAN, SMITH, & GRACE, Ltd., PRIDGEON, H., and BINNS, A. Dec. 16, 1946, No. 36968. [Class 83 (iii)] A number of pairs of rollers F interposed between the saddle and bed of a lathe is arranged so that each pair is carried by a framework C located within a housing A in the saddle and secured by a pair of bolts or studs L, one or more springs J or other resilient means being interposed between each framework and its housing. The rollers F are mounted in antifriction bearings in the framework C.
Patent GB-1214599-A (GB)
Title: Improvements in or relating to the manufacture of welded joints in tubular workpieces
IPC: B23D79/02
Filed: 1969-07-23
Abstract: 1,214,599. Friction welding; broaching. CATERPILLAR TRACTOR CO. 23 July, 1969 [23 Sept., 1968], No. 36994/69. Headings B3L and B3R. In a method of friction welding together tubular workpieces WP1 and WP2, workpiece WP2 is held stationary in a tailstock chuck 16 while workpiece WP1 is rotated in a chuck 14. A broach tool 40 is supported in the chuck so that after the friction weld is formed, the chuck 16 is unclamped and withdrawn axially to broach the weld flash. The method is performed on an inertia friction welding machine (Fig. 1, not shown) comprising a rotary spindle (22) carrying the chuck 14 and having a flywheel (24) mounted thereon. The spindle is rotated by an electric motor (26) driving an hydraulic, pump (30) which is connected by a manifold (34) to an hydraulic motor (32). The flywheel is spun to its required energy whereupon the hydraulic motor (30) is adjusted to produce no output and the flywheel free-wheels. The tailstock (18) is then forced by a pressure cylinder (20) towards the rotating workpiece WP1 to unite the two workpieces. The broach tool 40 includes an array of cutting elements 44 having different geometrical shapes or diameters to progressively remove the weld flash. The elements may cut on corners thereof to ensure easily removable chips, the final elements being circular. The broach tool may be rotationally mounted in the chuck 14 to enable it to remain stationary within workpiece WP2 whilst workpiece WP1 is rotated.
Patent GB-1483306-A (GB)
Title: Polymerization of ethylenically unsaturated monomer
IPC: C08F2/06
Filed: 1975-09-09
Abstract: 1483306 Polymerization of vinylidene monomers SOC ITALIANA RESINE SIR SpA 9 Sept 1975 [10 Sept 1974] 37007/75 Heading C3P Vinylidene monomers having a terminal CH 2 =C< group, e.g. vinylidene chloride optionally admixed with one or more other ethylenically unsaturated monomers are polymerized by contacting the monomers with a catalytic system comprising (a) an organic percompound, (b) an organic compound of zirconium or cobalt and (c) a Br÷nsted/Lowry acid, in an organic solvent medium in which the monomer, catalytic system and the polymer formed are soluble, (c) may be an octoate or naphthenate, or acetylacetonate. In the examples vinylidene chloride is copolymerized with methyl acrylate, acrylic acid and one or more of butyl acrylate, hydroxypropyl methacrylate 2-ethylhexyl acrylate in methyl ethyl ketone in the presence of carbon tetrachloride, p-toluene sulphonic acid, t-butyl hydroperoxide and either zirconium naphthenate or cobalt octoate or for comparison vanadium octoate or Mn, Ce, Pb or Cu naphthenate.
Patent GB-1361526-A (GB)
Title: Gas turbine exhaust silencer
IPC: B64F1/26
Filed: 1972-08-10
Abstract: 1361526 Silencing gas turbine engines GENERAL ELECTRIC CO 10 Aug 1972 [16 Sept 1971] 37273/72 Heading F1B A silencer for the exhaust gases from a gas turbine includes a skeletal frame with opposed structural elements 19, 21, Fig.1, and acoustical boxes 35, having lateral spaces therebetween forming gas passageways, each acoustical box having a tunnel member 61 passing therethrough which supports the box on the opposed elements. The exhaust gases pass via the plenum, Fig. 1 and exhaust transition into a lower low frequency section consisting of boxes 35 and a low frequency expansion section 45 and thence via an upper low frequency section and an upper low frequency expansion section to a high frequency section where noise is absorbed by a parallel baffle section 51. Cooling air may be passed through tunnel 61, which is surrounded by fiberglass acoustic and thermal insulation. Boxes 35 have perforated sheet metal sides e.g. stainless steel. The expansion sections 45 consist of a hollow chamber with sheet metal sides insulated on the interior.