baber/WOPTO huggingface dataset:
Patent GB-1526059-A (GB)
Title: Electrometer
IPC: G01R29/24
Filed: 1975-11-26
Abstract: 1526059 Measuring electrostatic potential XEROX CORP 26 Nov 1975 [16 Dec 1974 (2)] 48596/75 Heading G1U An electrostatic potential measuring system incorporates a probe 30, as described in Specification 1483366, which is referred to, and a switch 24 by which either the probe sensor 28 can be connected as shown via a terminal A to a source follower 42 and a meter 66 to display the probe potential, or in order to zeroize the circuit and correct for any drift the probe sensor 28 can be grounded via one of three terminals C which are bridged by the switch, and simultaneously the potential across the meter is fedback via an integrator A2,80 and a resistor 82 and connected, together with ground, to the input of the source follower, whereby the potential across a bias capacitor 78 between the input to the source follower and a floating battery 59 is changed to bring the potential across the meter to zero. The circuit also includes an amplifier A1 which compares a fraction of the battery voltage from a potential divider 84,86 with the voltage across a Zener 74, so that, if with the switch in position C, the battery voltage is too low, a large positive voltage is produced by the amplifier A1 causing the meter to give a positive reading rather than a zero reading as it should when the zeroizing loop is operative.
Patent GB-1542994-A (GB)
Title: Dirt-collecting containers for vacuum cleaners
IPC: A47L11/34
Filed: 1977-11-23
Abstract: The aspirating liquid flow tube in the form of a dual vertical concentric tube assembly or a single vertical tube with a vertical transverse internal wall for a vacuum cleaner dump bucket is closed at its upper end, and is provided with a single axial opening or opposed radial nozzles for discharging dirty liquid induced by the vacuum promoted air stream against the dump bucket dome above the ring baffle to facilitate separation of the liquid from the air stream and distribute the liquid about the full circumference of the dome sidewall prior to contact with the ring baffle to increase dump bucket capacity without introduction of liquid into the hollow riser tube leading to the vacuum source.
Patent GB-1477233-A (GB)
Title: Process for the production of cleaning-resistant nonwoven materials
IPC: D04H1/4258
Filed: 1974-11-12
Abstract: 1477233 Non-woven fabric BAYER AG 12 Nov 1974 [15 Nov 1973] 48865/74 Headings D1R and D2B In the preparation of a dry-cleanable material a non-woven material is treated with an aqueous dispersion of a copolymer comprising by weight (A) 1 to 2.5% N-methylolacrylamide. N-methylolmethacrylamide or a mixture thereof, (B) 1 to 5% acrylamide, methacrylamide or a mixture thereof, (C) 0.5 to 3% of an α, #-monoolefinically unsaturated dicarboxylic or tricarboxylic acid having 4 to 6 carbon atoms and (D) 89.5 to 97.5% of at least one acrylic or methacrylic acid ester having 1 to 16 carbon atoms in the alcohol component, up to 50% of component D being replaceable by at least one α-, #-monoolefinically unsaturated monomer other than those specified in (A) to (C).  Preferably (C) comprises maleic acid, fumaric acid, itaconic acid or aconitic acid. The alcohol component of ester (D) may be methyl, ethyl, n or iso propyl, n butyl or 2-ethylhexyl. Preferably part of (D) consists of acrylonitrile or styrene but other vinyl monomers are also listed. The aqueous dispersion is prepared by emulsion polymerisation using specified emulsifiers, peroxy initiators, reducing agents and chain transfer reagents at 10 to 95‹C and pH 1 to 9. The solids content is 1 to 70% by weight. The non-woven material is prepared by depositing continuous filaments to form a spun bonded web or by air laying, wet laying or carding and crosslapping the mat may be needled, fulled and/or shrunk. The fibres may be wool, silk, casein, α-protein, cellulose, cellulose ester (rayon), polyamide, polyester, polyacrylonitrile, copolymers of acrylonitrile with acrylates, copolymers of vinyl chloride or polyvinyl chloride with vinyl acetate and acrylates, asbestos, glass or metal, and may be crimped.  The dispersion is applied by impregnation foam impregnation, spraying, padding or printing. The fabric is then heated to remove water and then to cross-link the binder. In example 2 a 10 g/m<SP>2</SP> covering of dry binder was obtained on each side of the fabric after spraying with the dispersion.
Patent GB-1397254-A (GB)
Title: Locks
IPC: E05B15/04
Filed: 1972-10-24
Abstract: 1397254 Locks HUWIL-WERKE GmbH 24 Oct 1972 [11 Nov 1971] 48867/72 Heading E2A A key operated lock comprises a bolt having a bolt plate with a talon therein and a retaining spring extending beneath the plate and underlying the talon, the bolt plate forming part of a chamber and into which the spring is inserted from the same side as the key is inserted, the chamber being open for insertion of the spring. A casing 101 of the lock has a key post 102 which projects through an elongated slot in the baseplate 1 of the bolt, the spring 14 extends through the chamber in the bolt and is anchored at one end between two posts 19, 20. The chamber is formed by a plate 18 having the talon joined to a rib 17 and a head 16 of the bolt. The bolt has a lateral projection 21 whereby a projection 22 of the spring engages one or other side of the bolt projection to retain the bolt in the projecting or withdrawn position. The key post passes through an aperture in a disc 4 which has posts 5, 6 which engage notches in two bolt operating links 7, 8 the disc also has a notch open at the peripheral of the disc into which a peg 2 of the bolt extends whereby turning the key extends the bolt head 16 and extends two colinear sliding bolts connected 'to the links 7, 8. The two colinear bolts may be omitted or these bolts may be rotatable in which case the bolt base plate 1 has an extension with apertured wings in which engage a stud 10 or each end of a link 11 interconnecting the two colinear bolts whereby extending the first bolt rotates the colinear bolts.
Patent GB-1196117-A (GB)
Title: Improvements in Electric Storage Heaters
Inventor: SLATER WILLIAM REX
IPC: F24H7/06
Filed: 1966-11-01
Abstract: 1,196,117. Thermal storage heaters. HEATSTORE Ltd. 17 Oct., 1967 [1 Nov., 1966], No. 48996/66. Heading F4U. The bimetal 9 of a thermostat 8 controlling the supply of current to the heating elements of a storage heater is located in a separate housing 3 on the back of the heater so as to be sensitive to the temperature of the heater and of the ambient air. The storage core surrounded by insulation is located in an inner casing 12 which is surrounded by a metal cabinet 1 to which the housing 3 is attached. Heat is emitted by convection through the space between the easing 12 and cabinet 1 and by radiation from the cabinet 1. The housing 3 has an open bottom and upper perforations 10 to allow a flow of ambient air over the bimetal. The housing may be arranged over an imperforate portion of the cabinet 1, may be arranged over an opening in the cabinet, or may extend through an opening in the cabinet. The temperature at which the bimetal 9 operates may be varied by moving a fingerpiece 16 along a scale 4.
Patent GB-1292156-A (GB)
Title: Furnace and float tanks walls and parts thereof
Inventor: BRICHARD EDGAR
IPC: C03B5/42
Filed: 1969-10-08
Abstract: 1292156 Container for float glass GLAVERBEL 8 Oct 1969 49435/69 Heading C1M [Also in Division F4]  A method of making a refractory body which forms or is suitable for forming at least part of a float tank wall for use in a float glass process, is characterized in that a refractory mass 24 is east and one or more solid elements or pieces is or are pressed into the said concrete mass before it has set to form a layer covering at least part of a face of said mass, such elements or pieces being composed so that at least that surface of said layer which is remote from the cast mass has a composition different from the mass. The refractory mass 24, in the form of a concrete, can be formed from a combination of chamotte grains comprising 40-42% alumina, calcium aluminate and water. Other constituents which can be employed for forming a refractory concrete are corundum, sillimanite and alumina. The covering layer is composed of a material of higher thermal conductivity than the said mass, such as a carbon-rich layer, either in the form of blocks or as a rubble bound together by an agent which may incorporate fine carbon particles. The carbon layer prevents sticking of the glass and also assists in preserving the reducing atmosphere over a bath of Sn.
Patent GB-1113249-A (GB)
Title: Vapour generator control
Inventor: WILSON BRIAN
IPC: F22B35/00
Filed: 1963-12-13
Abstract: 1,113,249. Controlling feedwater supply. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 11 March, 1965 [13 Dec., 1963], No. 49442/63. Heading F4A. [Also in Division G3] In a vapour generator of the once-through type in which a hot primary fluid is used to evaporate a secondary liquid having a controllably variable feed rate to the generator, means are provided to reduce the flow of primary fluid when the secondary liquid feed rate is reduced from its full load value, in accordance with a directly proportional logarithmic relationship expressed by log Wp. = n log W8 where Wp and Ws are respectively the primary and secondary flows expressed as a proportion of their steady state full load values and n has a value greater than 1 and depends upon the characteristics of the particular generator. This arrangement tends to avoid a change in the temperature of the secondary liquid at a particular location in the generator i.e. constant superheater length is maintained. In the boiler 11 the evaporator 14 and superheater 15 are fed from a feedpump 16 and heated by primary fluid e.g. liquid sodium supplied through an inlet duct 12 and discharged through an outlet duct 13. A regulating valve 26 in the duct 12 is operated by a function generator controller 25 which includes an electronic function generator and servo-mechanism for effecting a control operation of the valve 26, tlhe input of the controller 25 being the feed flow measured at a point 27 downstream of a feed regulator valve 17. The valve 17 is operated by a proportional regulator 20 on a comparison of the boiler outlet pressure at a point 21 with a predetermined set point value at 22. An integral controller 23 regulates the speed of the feed pump 16 on a comparison of the position of the regulator valve 17 with a steady state position value fed in at 24. A dump valve 19 is opened by a controller 30 if the boiler outlet pressure rises to a value indicated at 31, in excess of the steady state value at 22 by say 100 lb./sq in. A still further controller 28 overrides the boiler pressure control of the valve 17 if the flow of feed water at the point 27 drops below a minimum rate indicated at 29. The valve 26 may be replaced by a controlled by-pass.
Patent GB-1088859-A (GB)
Title: Improvements in or relating to photocopying machines
IPC: G03G15/28
Filed: 1964-12-04
Abstract: 1,088,859. Photo-copying machines. ING. C. OLIVETTI & CO. S.p.A. Dec.4, 1964 [Dec. 6, 1963], No. 49526/64. Headings G2A and G2H. A photo-copying machine in which the image of a document between plates 26, 27 is projected by a lamp L through a lens system 33 and on to a copy sheet at an exposure station 35 is characterized in that the copy sheet can be fed selectively either from a stack 43 of single sheets or from a roll 44. A manually-operated selector either closes clutch 60 to operate roller 53 to feed a single copy sheet between rollers 49, 50 and also pivots roller 73 away from the driving roller 49, or opens clutch 60 and engages roller 73 with roller 49 to feed on web from the roll 44 between rollers 73, 74 and between knife blades 78, 79 which are operated by clutch 82 to cut off the required length of copy sheet. In this latter case, feeding of the web is initiated by the document's leading edge passing a feeler 152 and is stopped by the document's trailing edge passing this feeler to allow the knife to operate. Operation of the motor driving the various feed rollers is initiated by pressure on the document receiving table 1 operating switch MSP. A lever 30 can be set to recirculate the document for multiple copies. A feeler 151 initiates movement of the pick-off roller 53 for a sheet to be fed from the stack 43. The copy sheet passes between charging electrodes 85, 86 and, after exposure, through a magnetic brush developer 40 and is then fixed by a fusing lamp F.
Patent GB-1085640-A (GB)
Title: Process for producing iodine 131
IPC: G21G1/02
Filed: 1964-12-04
Abstract: 1,085,640. Separation of radio-isotopes. OSTERREICHISCHE STUDIENGESELLSCHAFT FUR ATOMENERGIE G.m.b.H. Dec. 4, 1964 [Dec. 6, 1963], No. 49562/64. Heading G6R. [Also in Division H5] Iodine 131 is produced by dissolving neutronirradiated telluric acid or ortho telluric acid in an aqueous medium and adding an organic reagent to precipitate telluric acid, leaving iodine 131 in solution. The irradiated substance is dissolved in dilute hydrochloric acid, and a little hydrogen peroxide is added, followed by ethyl alcohol and solid sodium bicarbonate. After filtration, the filtrate is further purified by passing through a column of aluminium oxide which removes residual tellurium; further iodine 131 is obtained by extracting the column with dilute ammonia. Other suitable organic reagents are acetone and acetic acid. For irradiation, the telluric acid is enclosed in a quartz capsule arranged in a graphite container sealed by graphite powder, the whole being surrounded by an aluminium jacket.
Patent GB-1158717-A (GB)
Title: Improvements in or relating to Railings, Ladders, Trusses and Similar Type Articles
IPC: E04F11/18
Filed: 1966-11-04
Abstract: 1,158,717. Making railings and the like; jointing by forging. E. MULITZ, M. M. MULITZ, and L. MULITZ, [trading as PICO SAFE STAIRS CO.]. 4 Nov., 1966 [18 Aug., 1966], No. 49592/66. Headings B3A and B3H. [Also in Division E1] In a railing, ladder or truss comprising two parallel rails 11, 12 and a number of transverse balusters or rungs 20 inclined or at right angles thereto, the parts being of extruded aluminium or other material, each rail comprises a tube having a longitudinal slot receiving the ends of the balusters, the edges 15 of the slot being bevelled or sharpened to bite into the balusters as the parts are secured together, by clamping pressure applied to the tube walls. The rail 11 shown has a weakening groove 13 to determine the line along which it bends. In a modification providing a flat-topped rail the single groove 13 is replaced by a pair of grooves at the upper corners of the rectangular section. Each baluster may comprise a substantially rectangular tube two opposed walls of which are concave or grooved to provide narrow areas into which the edges 15 can bite. The bevelled edges 15 may have tongues which, following clamping, meet to close the longitudinal slot intermediate of the balusters.
Patent GB-1073817-A (GB)
Title: Polymers of perfluorocyclopentadiene and their production
IPC: C07C17/23
Filed: 1965-11-24
Abstract: Perfluorodicyclopentadiene may be prepared by refluxing trichloroheptafluorocyclopentane with acid-washed zinc dust and zinc chloride in sodium-dried dioxane for 24 hours and fractionally distilling the product, the fraction recovered at 30 DEG  C. being hexafluorocyclopentadiene which dimerizes at room temperature to perfluorodicyclopentadiene.ALSO:Polymers of perfluorodicyclopentadiene may be prepared by polymerizing the monomer, optionally with other olefinically unsaturated compounds, by conventional processes.  Polymerization may be effected in bulk, solution, suspension or dispersion.  Many suitable co-monomers are specified including ethylenically unsaturated hydrocarbons, halogenated hydrocarbons and acids and the esters and nitriles thereof, vinyl esters, vinyl ethers and halogenated vinyl ethers. The products may be oils or solids, and may be crosslinked by heating or vulcanizing in the presence of crosslinking agents.  In Examples (1) perfluorodicyclopentadiene is polymerized by heating; (2 and 3) perfluorodicyclopentadiene, tetrafluoroethylene and perfluoromethyl perfluorovinyl ether are copolymerized in aqueous emulsion in the presence of potassium persulphate, sodium bisulphite, copper sulphate, ammonium perfluorooctanoate and sodium phosphates; (4 and 5) perfluorodicyclopentadiene, hexafluoropropene and vinylidene fluoride are copolymerized in aqueous emulsion in the presence of ammonium persulphate, silver nitrate, ammonium perfluorooctanoate and sodium phosphates; and perfluorodicyclopentadiene and tetrafluoroethylene are copolymerized (6) in aqueous emulsion in the presence of ammonium persulphate, silver nitrate, sodium phosphates and perfluorooctanoic acid and (7) in bulk in the presence of nitrogen difluoride.
Patent GB-1477725-A (GB)
Title: Ash assesment of coal extract
IPC: G01N33/22
Filed: 1975-10-10
Abstract: 1477725 Determining ash content of coal COAL INDUSTRY (PATENTS) Ltd 10 Oct 1975 [19 Nov 1974] 50106/74 Heading G1A The mineral ash content of coal extract i.e. that part of crude coal solution that remains after undissolved coal and mineral matter have been removed by separation using filtration or centrifuging, is determined by sampling the extract; removing the solvent therefrom e.g. by distillation; solidifying the extract e.g. by rapidly cooling the hot residual extract after the distillation process; breaking the solid extract to expose a fresh surface thereof; and comparing its reflectance, either visually or by use of an instrument, with that of a control sample of known ash content.
Patent GB-1412657-A (GB)
Title: Detergent compositions
IPC: A61K8/23
Filed: 1973-10-30
Abstract: 1412657 Detergent composition WITO CHEMICAL CORP 30 Oct 1973 [1 Nov 1972] 50377/73 Heading C5D Dry powder detergent compositions in spraydried bead form and suitable for use as bubblebath compositions, consist essentially of a mixture of (a) from 10% to 15% by weight of a sodium or potassium C 10  to C 22  α-olefine sulphonate; (b) from 1% to 3% by weight of a sodium or potassium linear C 10  to C 20  alkyl benzene sulphonate; (c) from 1% to 3% by weight of a water-soluble starch hydrolysate having a dextrose equivalent between 15 and 44; (d) from 18% to 25% by weight of MgSO 4 . 7H 2 O; (e) from 8% to 12% by weight of NaCl; and (f) from 40% to 60% by weight of Na 2 SO 4  or K 2 SO 4 . The compositions may also contain minor amounts of perfumes, colouring agents, sequestering agents and buffering agents, for example from 0À25% to 1À5% by weight of sodium citrate as buffering agent. Example 1 demonstrates the production of hollow, freeflowing spherical beads having low dusting tendency, good foaming properties and of acceptable bulk density (0À225 g./c.c.).
Patent GB-1438697-A (GB)
Title: Process for removing nitrogen compounds from waste water
IPC: C02F3/00
Filed: 1973-10-31
Abstract: 1438697 Nitrogen removal from waste water STAMICARBON BV 31 Oct 1973 [31 Oct 1972] 50630/73 Heading C1C Microbial removal of nitrogen compounds from waste water is effected by passing the water to anaerobic denitrification zone 2 (for reducing nitric and nitrous compounds to molecular N 2 ), then to aerobic nitrification zone 5 (for oxidizing ammonia and ammonium ions to nitric and nitrous compounds), with 50-90% of the effluent from 5 being recycled to 2, and the remainder passed to settler 22 the sludge of which is mostly recycled to 2 (and possibly also 5) and the effluent of which is optionally passed to second denitrification zone 8 thence to settler 15 the sludge from which is recycled to 8. The treated effluent leaving at 18 may be given an aerobic aeration before discharge. Zone 5 is supplied with air through line 6 and optionally also with lime solution. Zone 8 may be fed through 9 with an oxygen acceptor, e.g. methanol, hydrogen or a solution of organic acids, e.g. waste water from a plant for oxidizing cycloalkanes to cycloalkanols and cycloalkanones, and the flow thereof is controlled by valve 19 which is regulated in response to nitrate analyser 21 attached to line 18 (as shown) or to line 11 or 25.
Patent GB-1358909-A (GB)
Title: Production of dry sodium dichloroisocyanurate
IPC: C07D251/36
Filed: 1971-11-02
Abstract: 1358909 Drying sodium dichloroisocyanurate BADISCHE ANILIN- & SODA-FABRIK AG 2 Nov 1971 [3 Nov 1970] 50808/71 Heading C2C Dry sodium dichloroisocyanurate is obtained by spraying an up to 50% w/w aqueous solution or suspension of the same into a fluidized bed consisting of finely-divided (e.g. 0À15 to 0À4 mm.) dry sodium dichloroisocyanurate having a residual moisture content of not more than 2% by weight and maintained in the fluidized state by a gas inert under the reaction conditions having an inlet temperature of 100 to 300 C., the steam thus produced being removed with said inert gas. The initial charge of dry sodium salt on the sieve plate at the base of the fluidized bed reactor is preferably from 30 to 400 kg./m.<SP>2</SP> of sieve plate. The process may be effected continuously with a preferred outlet gas temperature of 50 to 210 C.
Patent GB-1017949-A (GB)
Title: Radiation-induced polymerisation of trioxan
IPC: C08G2/00
Filed: 1964-12-15
Abstract: From 0.1 to 5% of a compound soluble at least to the extent of 0.5% in liquid trioxan at 65 DEG  C. and which combines with hydroxyl groups at this temperature but is free from acidic functions is added to trioxan and the mixture polymerized by irradiation. Alternatively the mixture may be irradiated and then polymerized in a radiation-free zone.  Specified additives are isocyanates, diisocyanates, polyisocyanates, allyl glycidyl ether, phenylglycidyl ether, and styrene oxide.  The compound may be introduced into the trioxan by dissolving it in molten trioxan and then pouring this solution into a liquid non-solvent to cause the solution to solidify. The non-solvent may be a hydrocarbon containing from 7 to 12 carbon atoms.
Patent GB-1278357-A (GB)
Title: Washing compositions
IPC: C11D3/42
Filed: 1969-10-17
Abstract: 1278357 Washing compositions for polyester textiles HENKEL & CIE GmbH 17 Oct 1969 [19 Oct 1968] 51058/69 Heading C5D A washing composition for polyester textiles comprises (A) at least one optical brightener suitable for polyesters selected from substituted benzoxazoles, benzimidazoles, coumarins and cyanoanthracene, (B) at least one anionic, non-ionic or amphoteric surfactant, (C) at least one aromatic ester of formula in which X is H, -OH, -OCH 3 , -OC 2 H 5  or C 1  to C 4  alkyl, Y is a -C n H 2n - or radical, and OZ is the residue of a monohydric or dihydric aliphatic alcohol or aliphatic ether alcohol or a monohydric phenol, said alcohol or phenol having not more than 12 carbon atoms altogether; and n is 1 to 5. The aromatic esters cause the optical brighteners to be more strongly absorbed on the fibres. Typical esters are ethylphenylacetate, phenylphenylacetate, butyl 3 - benzoylpropionate and methoxypropyl 3- benzoyl propionate. The composition contains 0À01 to 1% of (A), 1 to 50% of (B), 1 to 50% of (C), 10 to 90% of an inorganic and/or organic builder salt (D), 0-50% of a bleaching agent (E), and 0-20% of a detergent auxiliary (F). (E) may be a per-compound together with a conventional activator or stabilizer; or an alkali metal hypochloride or chlorinated cyanuric acid. (F) may be a greyness inhibitor such as sodium cellulose glycollate, a foam inhibitor, e.g. a fatty acid or triazine derivative, a skin protective substance, e.g. a fatty acid rnono- or di-alkylolamide, a biocide, an enzyme, a dissolving acid, e.g. alkali metal salt of an ethylbenzene sulphonic acid, dyestuff, perfume, or an optical brightening agent for cellulose and polyamide fibres.