baber/WOPTO huggingface dataset:
Patent GB-811702-A (GB)
Title: Improvements in or relating to the dyeing of textile material of wool or hair
IPC: D06P5/20
Filed: 1954-07-08
Abstract: "Tone-in-tone" pattern effects on textile materials of wool or hair are produced by submitting the material to selective irradiation with ultra-violet light according to the desired pattern effect, and then dyeing.  Selective irradiation may be effected by masking the material according to the desired pattern, a cut-out sheet or built-up baffle being interposed between the source of light and the material and a gradual merging or fading of the pattern effect being obtained by disposing the mask at a distance from the material. Alternatively, the ultra-violet lamps may be so disposed that the textile is submitted to varying degrees of irradiation across its width.  The irradiation period may be reduced by pretreating the textile with an oxidizing agent, e.g. hydrogen peroxide, which is unstable under ultra-violet light.  Enhanced effects are obtained by incorporating a "retarding agent" in the dyebath.  Dyestuffs which will dye chlorinated and unchlorinated wool to different extents are preferably employed, specified dyestuffs being acid, mordant and prematallized dyestuffs.  Examples are given.
Patent GB-1492551-A (GB)
Title: Electronic storage tube target structure and method of operation
IPC: H01J31/60
Filed: 1974-09-07
Abstract: 1492551 Cathode-ray storage tube PRINCETON ELECTRONIC PRODUCTS Inc 7 Sept 1974 [8 March 1974] 20000/74 Heading H1D Electronic storage apparatus includes a cathode-ray tube target comprises conducting areas 11a (e.g. Si) and charge storage areas composed of at least two insulating layers 41a, 41b at least one layer exhibiting increased charge conductivity in the presence of ionizing radiation and at least one layer resistant to ionizing radiation effects, and conditioning means for subjecting the target during operation in a conditioning or erase phase, to ionizing radiation for a time interval which is > the dielectric relaxation time of the first mentioned insulating layer(s) thereby causing redistribution of charge within the first layer(s) to reduce the potential distribution across the first layer(s) substantially to zero to assist prevention of fading toward "white" of the stored potential distribution. The ionizing radiation may be from the deceleration grid (e.g. X-rays), or X-rays or ultraviolet radiation for example from an external source. The insulating layers may be respectively silicon dioxide and aluminium nitride, silicon nitride or oxynitride. Operational modes (reading, writing, &c.), including potentials are disclosed in relation to Figs. 2b-2f (not shown). Exposure to ionizing radiation produces zero volts across layer (41b) (Fig. 2c) and constitutes a "conditioning operation", layer (41a) acting as a bias battery to maintain the negative potential on surface (44). During writing, a reverse field develops across layer (41b) (line (55) in Fig. 2e) and during reading (Fig. 2f), electrons "knocked off" the target and bombarding a metallic deceleration grid produce radiation which is prevented from causing charge image dissipation since point (56<SP>1</SP>) is more negative than point (54<SP>1</SP>). Any tendency to fade is countered by "bias battery layer" (41a) causing electron drift back to surface (44). The target current may serve a grid modulating signal to a synchronized cathode-ray tube. Vacuum gaps may provide the radiation insensitive layers (Fig. 3a). Conducting layer 61 of Si is etched to produce pedestals 61, supporting strips 62 of silicon dioxide. Alternatively, the pedestals may be insulating material as used for layers 41a, 41b. Dimensions are given. Operation is described with reference to Figs. (3b-3d) (not shown).
Patent GB-878391-A (GB)
Title: 6-methyl steroids
Inventor: KIRK DAVID NEVILLE
IPC: C07J21/00
Filed: 1959-06-11
Abstract: The invention comprises steroids of the formula <FORM:0878391/IV (b)/1> (wherein n is 2 or 3) and their preparation by reacting 3b-hydroxy- or 3b-acyloxy-16-methylpregna-5:16-dien-20-one (wherein the acyl group contains at most 10 carbon atoms) with an alkaline peroxidizing agent followed by acylation to form a 3b-acyloxy-16a:17a-epoxy-16b-methylpregn-5-en-20-one, reacting this with HBr or HI to give a 3b-acyloxy-17a-hydroxy - 16 - methylene - pregn-5-en-20-one, reacting this with ethane-1:2-diol or propane1:3-diol to form the corresponding 20-cyclic ketal, reacting this with an organic per-acid to form the corresponding 5a:6a-epoxide, and treating this with a methyl magnesium halide followed by alkaline hydrolysis.  Examples are given.  In the Provisional Specification the product of the reaction of the 3b-acyloxy-16a:17a-epoxy-16b-methylpregn-5-en-20-one with HBr or HI is stated to have the formula <FORM:0878391/IV (b)/2> This compound is then reductively dehalogenated to yield a product named as a 3b-acyloxy - 17a - hydroxy-16-methylpregn-5-en-20-one, and this is subsequently treated as in the Complete Specification to give products which p  are named as 16-methyl compounds.
Patent GB-393775-A (GB)
Title: Improvements relating to gas regulating devices
IPC: G05D23/02
Filed: 1932-07-15
Abstract: 393,775. Thermostats. RADIATION, Ltd., Thimble Mill Lane, Aston, Birming- ham, and YATES, H. J., 15, Grosvenor Place, London. July 15, 1932, No. 20040. [Class 135.] In a gas-regulating device for use in connection with cooking-apparatus and consisting of a thermostat provided with hand-operated adjusting means, one side of the body part a has an annular seating d and a removable cover q. The tubular outer member f of the thermostat extends from the other side of the body part and contains an axially adjustable rod &c. g of material different from the tube. Co-operating with the seating d there is a hollow spring-loaded valve i with an extension j into which is screwed an adjustable one-piece abutment stem k. A peg o limits the relative rotational movement of stem and valve. The stem k passes through a gland s and on its outer end is provided with a finger piece t and a scale &c. u which enables the inner member of the thermostat to be set to any position. A peg l, inserted into one side of the stem through a hole, which is afterwards closed by a plug m, co-operates with a stop n to limit the movement of stem and valve.
Patent GB-205582-A (GB)
Title: Improvements in or relating to inflammable vaporisable liquid fuels
IPC: C10L1/02
Filed: 1922-07-21
Abstract: Liquid fuel suitable for use in internal-combustion engines consists of an alcohol, a hydrocarbon, and water in such proportions as to form a homogeneous solution.  Pyridine may be added to denature the alcohol, and either picric acid or a peroxide and hydrochloride acid, or both, to assist combustion. In an example, 92 litres of crude commercial alcohol, 5 litres of benzol, and 3 litres of pyridine are churned together, and the mixture is afterwards churned with an equal volume of water.  To each litre of the solution are added 0.67 gram of barium peroxide and 0.2 gram of hydrochloric acid, and 0.67 gram of picric acid. The solution is heated to 38 DEG  C. after addition of the picric acid.  Specifications 3899/14, 111,661, 167,831, and 183,577 are referred to.
Patent GB-358481-A (GB)
Title: Improvements in furnaces for the reduction of iron oxides and other iron compounds
IPC: C21B13/12
Filed: 1930-07-02
Abstract: 358,481. Extracting iron. AMOROSO, M., 12, Via Montevideo, and SOC. ANON. METALFER, 3, Via Granello, both in Genoa, Italy. July 2, 1930, No. 20122. Convention date, July 3, 1929. [Class 72.] Iron compounds in the form of minerals, residues or slags, e.g. iror oxides or sulphides are subjected to a simultaneous reduction and electro magnetic treatment in a furnace 1 comprising a hopper 7 heated by suitable means, e.g. oil burners 8, into which the mixture of iron compounc and reducing agent is fed from a shoot 6, the heated mix ture then passing through passages 9 into air gaps 5 in the polepieces 4 of two electromagnets 2 which are excited by current in coils 3 situated outside the furnace. The reduced iron flows out through passages 10 provided with gratings. It is stated that the time and temperature required for reduction are considerably reduced by the simultaneous electromagnetic treatment and that by the use of the furnace steel may be produced directly without the intermediate production of pig iron.
Patent GB-478370-A (GB)
Title: Improvements in the manufacture and production of resins
IPC: C08G2/00
Filed: 1936-07-22
Abstract: Resins are prepared by condensing aldol, in the presence of secondary amines as condensing agents, while warming, and subjecting the resulting products to thermal treatment at 160--190 DEG  C. Specified amines are dimethylamine, diethylamine, diethanolamine and methylethanolamine.  According to an example, a mixture of aldol, water and a small amount of diethylamine is boiled under reflux for 4 hours.  Water and other low boiling constituents are then distilled off, and the reaction mass is kept for 7 hours at 180 DEG  C. and then, for a short time, at 190 DEG  C. The last traces of water are then removed by vacuum.  The resins are soluble in spirit and compatible with nitro-cellulose, and may be used in the preparation of polishes, and in the electrical industry as a shellac substitute, e.g. for impregnations or for sticking together mica.  Specifications 461,827, 470,280, and 474,034 are referred to.
Patent GB-1012386-A (GB)
Title: Resiliently supported reclining chair
IPC: A47C7/44
Filed: 1963-05-22
Abstract: 1,012,386. Reclining chairs. HYLAND CASE FLINT. May 22, 1963 [May 24, 1962], No. 20327/63. Heading A4J. In a reclining chair, a seat frame 35 is pivotally secured to the front of a base frame and to the lower end of a back frame 42, so that the seat and back frames are movable vertically under the weight of an occupant against the action of a spring 55. The angularity of the back frame 42 relative to the seat-frame 35 is maintained by a link 61 pivoted to the base frame and back frame. Rearward pressure on the back frame 42 causes it to change its angular position relative to the seat frame 35 either by the seat frame together with part 16 of the base frame moving forwards or by the front end of the link 61 moving rearwards in a track in the base frame against the action of a spring, Fig. 11 (not shown). The seat frame 35, Fig. 1, together with a movable part 16 of the base frame are guided in their forward movement by projections 17 on a brace 14 engaging channel-shaped guides in the frame 16. They are biased to a rearward position by a spring 26. The seat may be locked in any position by a latch plate 84. Alternatively, Fig. 7, a cross-member 90 of the base frame, hinged between the seat frame and legs 12, and a stop link 95 allow forward movement of the seat frame between an upright position and a reclining position. A vehicle seat, Fig. 10, may have the link 61 and spring 55. housed in uprights 106 and the seat and base members slidable along tracks 109 and secured in position by a latch 108. An adjustable head-rest 78, Fig. 1, may be provided.
Patent GB-1006395-A (GB)
Title: Improvements in and relating to resistance welding guns
Inventor: PETHER ALAND FRANK
IPC: B23K11/31
Filed: 1963-05-22
Abstract: 1,006,395. Welding by pressure. PRESSED STEEL CO. Ltd. May 22, 1964 [May 22, 1963], No. 20489/63. Heading B3R. In a compressed air actuated resistance welding gun the fixed electrode of a pair of electrodes is supported by a fixed member of synthetic plastic, e.g. cast nylon. In a spot welding gun the fixed member 12 and a handle 11 of the same material are at opposite ends of a double-acting compressed air cylinder 13. The moving electrode is attached to a foot 15 connecting to a piston rod 14 and guide rod 16 guided by the member 12. The fixed electrode is secured to a clamp 24 on the member 12. A control switch 17 is located in the handle 11.
Patent GB-531969-A (GB)
Title: Improvements in or relating to cable sealing boxes
IPC: H02G15/10
Filed: 1939-07-14
Abstract: 531,969. Junction boxes. REYROLLE & CO., Ltd., A., and ROBSON, O. July 14, 1939, No. 20507. [Class 38 (i)] A cable sealing box A having inlets A' in its lower part has a filling orifice C formed by a funnel-shaped projection at the front of the box and separated from the interior of the box by a partition D extending downwards from the orifice below the level of the surface of the compound. The orifice may be shielded by fuse carriers or covers E, F that may serve to retain a dust cover G in place. In order that the box may be suitable for use without filling compound, a knockout H may extend from the partition D to close the filling orifice C.
Patent GB-460090-A (GB)
Title: Improvements relating to mechanism for the control and ignition of the gas supply to burners
IPC: F16K17/00
Filed: 1935-07-19
Abstract: 460,090. Fluid - pressure actuated valves. EVERED & CO., Ltd., and DAVIES, G. July 19, 1935, No. 20550. [Class 135] [Also in Group XI] In a gas control and ignition device for burners in which gas passes from an inlet 2<a> to an outlet 2b, connected with the burner, and to a byepass 5 when a valve 3 is opened by the pressure of the gas acting upon a diaphragm or piston 8. the circuit of a catalytic filament for igniting the byepass is closed by the upper end of a rod 10 engaging a spring-pressed contact 17 and opened by the disengagement of the lower end of the rod from a spring- pressed valve 4 when the latter closes the inlet 5<a> to the byepass. The movement of the piston 8 is regulated by a ball valve 19, vent holes 13b being provided in the battery casing 13. A channel or channels 9<a>, filled with mercury or a semi-liquid amalgam, may be provided in the piston 8 or the cylinder 9 to ensure a smooth and gas-tight working as described in Specification 460,091.
Patent GB-659025-A (GB)
Title: Improvements in or relating to high tension on-load transformer tap-changing switches
IPC: H01H9/00
Filed: 1949-08-08
Abstract: 659,025. Electric transformers. SMIT & CO.'S TRANSFORMATORENFABRIEK N.V., W. Aug. 8, 1949, No. 20569. Convention date, Aug. 9, 1948. [Class 38 (ii)] [Also in Group XXXVII] In a transformer on-load tapchanging switch having a main contact 2, connected directly to the line and adapted to be moved step-bystep over fixed contacts 4, 5, &c. and auxiliary contacts 1, 3 connected to the line through resistances and adapted to assist the change-over, the main and auxiliary contacts are operated successively and are mounted on concentric rotary shafts so as to trace out circles lying in different planes. In the form shown the main contact 2 is mounted on a rotary shaft 13 and sweeps over the fixed contacts 4, 5, 6, 7 while the contacts 1, 3 are fixed on the rotary sleeve 12 and sweep over contacts 4<SP>1</SP>, 51, 6<SP>1</SP>, 7<SP>1</SP> electrically connected to the contacts 4, 5, 6, 7. The desired sequence of operation is achieved by the use of Maltese crosses 14, 15 fixed to the parts 12, 13 and operated by pins 18, 18<SP>1</SP> and 19 on members 16, 17 driven by the common shaft 20. The complete cycle of operation from one contact to the next thus takes place in three successive stages, viz. contacts 1 and 3 move to form with their resistances a bridge between 4<SP>1</SP> and 51, contact 2 moves to contact 5, contacts 1 and 3 move on further till they are both on contact 5<SP>1</SP>. In a modification, Figs. 3 and 6 (not shown), the contacts 1, 2 and 3 are mounted on three concentric shafts and move successively.
Patent GB-221498-A (GB)
Title: Improvements in inflating-valves for footballs and the like
IPC: F16K15/20
Filed: 1924-09-01
Abstract: 221,498. Geelhoed, J. Sept. 8, 1923, [Convention date]. Tyre and like inflating valves.-An inflating- valve for footballs and the like comprises a tubular perforated member f of indiarubber having a wide flange b for attachment to the bladder a. The perforations dare nomally closed by an indiarubber band e which fits the member f without compression and is held in place by a head g. Sufficient room is left on the body f so that the band may be displaced axially somewhat without uncovering the perforations. The member f is threaded at c for the attachment of an inflator.
Patent GB-660011-A (GB)
Title: Preparation of thermoplastic resins from fluorene
Inventor: JENNINGS RAYMOND JOHN STUART
IPC: C07C2/76
Filed: 1949-08-04
Abstract: Thermoplastic resins are made by dehydrogenating fluorene by heating with a metallic oxide or oxidized compound containing a labile oxygen grouping to produce monomeric and polymeric bis-diphenylene ethylene which are separated and the monomer polymerized by heat treatment preferably in the presence of a polymerization catalyst, e.g. benzoyl peroxide.  The preparation and separation of the monomer is described in Group IV (b). Oxidized compounds are those which, when decomposed by heat, revert to the metal or a lower oxide thereby releasing oxygen, e.g. lead mon- and dioxide, iron oxides, oxides of nickel and cobalt, potassium chlorate and sodium nitrate and peroxide. Temperatures which vary with the catalyst used, are about 350-360 DEG C. and the time of reaction is 18 hours for complete polymerization. The polymers are of low molecular weight and have high softening points depending on the degree of polymerization.  Resins with softening points up to 200 DEG  C. may be produced which after purification by precipitation from benzene with alcohol do not melt below 450 DEG  C., the latter being soluble in warm conc. sulphuric acid.  They are soluble in hot benzene, sparingly soluble in hot glacial acetic acid, and insoluble in cold alcohol.  They may be used in moulding powders with or without fillers and plasticizers and in examples (3) a moulding powder is made by mixing the alcohol insoluble polymer with asbestos and dibutyl phthalate and is moulded at 400 DEG  C. under a pressure of 1 ton per sq. inch or at 280 DEG C. when the polymer contains 3 per cent of monomer and in (4) peroxide catalysed material is dissolved in benzene, filter paper impregnated therewith and pressed to a hard disc at 200 DEG  C. with 2 tons per sq. inch pressure.ALSO:Bis-diphenylene ethylene is made by dehydrogenating fluorene on heating with a metallic oxide or oxidized compound containing a labile oxygen grouping.  The latter compounds are those which, when decomposed by heat, revert to the metal or a lower oxide, thereby releasing oxygen, e.g. lead mon- and dioxide, iron oxides, oxides of nickel and cobalt, potassium chlorate and sodium nitrate and peroxide.  The product is separated from polymerized material formed in the reaction; by distillation under reduced pressure or by extraction with benzene and precipitation of the polymers therefrom by the addition of alcohol or of the product therefrom as its picrate.  Temperatures indicated are about 350-360 DEG  C.  Bis-phenylene ethane and fluorenone are other possible by-products and for best yields of the desired product the fluorene-metallic oxide (or oxidized compound) mixture (1-4 parts approx. by weight) is heated under reflux at below 293 DEG  C., the boiling-point of fluorene, then gradually heated to 350 DEG  C. and the product isolated.  Desirably reaction is effected under partial vacuum.  The product may be polymerized, (c.f. Group IV (a)). Examples are given illustrating the use of lead mon- and dioxides.
Patent GB-423101-A (GB)
Title: Improvements in or relating to televsion telecinematograph and like methods and apparatus therefor
IPC: H04N3/34
Filed: 1933-07-21
Abstract: 423,101. Television; valve generating circuits. BAIRD, J. L., and BAIRD TELEVISION, Ltd., 58, Victoria Street, London. July 21, 1933, Nos. 20620 and 23020. [Classes 39 (i), 40 (iii), and 40 (v)] In a television system in which scanning is effected by a cathode ray, the scanning lines are intercolated by deflecting the ray in one direction by the combined effects of two independent electrical oscillations. The two sets of oscillations may be applied to separate pairs of plates or they may be combined before being applied to the normal image deflection plates of the cathode-ray tube. One or both of the oscillations may be of sawtooth wave form and as shown in Fig. 1, a saw-tooth wave form b of frequency equal to the frequency of the complete scanning is combined with a saw-tooth wave a of frequency equal to the number of times the beam passes across the picture to produce a wave form c which is applied to one pair of plates of the cathode-ray tube. As shown in Fig. 2, two saw tooth wave form oscillators comprise constant current devices 3, 4 condensers 5, 6 and gas-filled thermionic valves 7, 8, through which the condensers are discharged. The cathode of the valve 7 is connected to the anode of the valve 8, and the potential variations between the anode of the valvo 7 and the cathode of the valve 8 are applied to one pair of the reflecting plates of the cathoderay tube. The outputs from the two oscillators may be combined by means of a transformer with a double primary winding or by a mixing valve with two grids. In a modified arrangement a single oscillator may be used in conjunction with a discharge relay which charges an auxiliary condenser, the potential difference across which is added to the output of the oscillator. Another discharge valve shunts the condenser which is arranged to discharge when it has received a number of charges equal to the number of traversals in which the picture is completely scanned. The end of the cathode-ray tube may be formed as a plane-convex lens for projection of the image on to a viewing screen. The fluorescent screen may be such that a semipermanent image is formed and is obliterated at the end of each traversal by flooding the screen with infra-red rays. Alternatively the activating beam may be preceded by an obliterating beam as described in Specification 291,121, [Class 40 (iii)]. The oscillators may be of the type described in Specification 420,091. Specification 381,898 also is referred to.
Patent GB-899224-A (GB)
Title: Improvements in or relating to welded structures
Inventor: HAINES GEOFFREY HERBERT
IPC: B21D51/24
Filed: 1959-06-16
Abstract: 899,224. Making hollow vessels; welding by fusion. GENERAL ELECTRIC CO. Ltd. June 10, 1960 [June 16, 1959], No. 20620/59. Classes 83 (2) and 83 (4). [Also in Group XL (a)] In a welded structure comprising a vessel or shell and one or more annular skirts welded to the vessel or shell along an annular zone thereof, the zone is constituted by a connecting ring having a plurality of circumferential flanges to which are welded the skirt or skirts and the two complementary portions of the vessel or shell on each side of the zone. In making a substantially spherical pressure vessel for the core of a gas-cooled nuclear reactor, two portions 1, 2 of slightly different radii and formed from steel plates are butt welded to one pair of opposite flanges on a cruciform section carbon manganese steel ring 3 formed from a number of bent bars. An external support skirt 4 is butt welded to the external flange of the ring and an inner reactor core supporting skirt 5 is butt welded to the internal flange.
Patent GB-650731-A (GB)
Title: Darkroom lamp
IPC: G03D17/00
Filed: 1947-07-30
Abstract: 650,731. Colour screens. GEVAERT PHOTO-PRODUCTEN N.V. July 30, 1947, No. 20646. Convention date, July 31, 1946. Drawings to Specification. [Class 97 (i)] [Also in Group XI] In a dark-room lamp (see Group XI), employing a filter slide having differently-coloured filter area, the slide 6 comprises a support of synthetic plastic material, such as cellulose acetate, on which is positioned a dyed layer of gelatine film having the said differently-coloured areas.