baber/WOPTO huggingface dataset:
Patent GB-745071-A (GB)
Title: Improvements in or relating to luminescent materials
IPC: C09K11/08
Filed: 1953-05-08
Abstract: 745,071. Luminescent material; discharge lamps. PATENT-TREUHAND-GES. FUR ELEKTRISCHE GLUHLAMPEN. May 8, 1953 [May 21, 1952], No. 12922/53. Class 39 (1). A luminescent material, particularly for use in a low or high pressure mercury vapour discharge lamp, contains 15-60 per cent, preferably 30 per cent, magnesium fluorogermanate or magnesium titanate or magnesium arsenate activated with tetravalent manganese to be excited by long wave ultra-violet light, particularly 253.7 or 365 mÁ, admixed with an alkaline earth halogen phosphate, particularly 20-85 per cent, preferably 40 per cent, calcium halophosphate activated by manganese and antimony, with or without 20-85 per cent, preferably 30 per cent, calcium-strontium silicate activated by manganese and lead to prevent reduction of the tetravalent manganese. The magnesium fluorogermanate can correspond to the formula 3-3.5MgO . 0.5- IMgF 2 . 1GeO 2 : 0.01Mn, the calcium halo-phosphate to 3Ca 3 (PO 4 ) 2 . 1CaF 2 + up to 10 per cent by weight Mn + from 2-6 per cent by weight Sb, and the Ca-Sr-silicate can contain 1-5 mol. per cent SrO, about 1-3, preferably 2.4, per cent by weight of Mn and about 1-3, preferably 1.6, per cent by weight of Pb. The luminescent material can be coated on the inner side of the bulb of a low pressure mercury discharge lamp or on the inner side of an outer bulb enclosing a high pressure mercury vapour discharge tube, as shown in the drawing. A mica screen 7 protects the lamp base from heat. The discharge tube 1 is provided with argon and a quantity of mercury such that a pressure of about 3-5 atmospheres is developed during operation. Dimensions of the lamp are given. The outer bulb 8 may be partly spherical or pear or ellipsoidal-shaped. The lamp can be in the form of a mixed-light lamp having an incandescent coil within the outer bulb as a series resistance for the high-pressure discharge. The high-pressure tube and the coil are rated in such manner that the luminous flux from the tube is more intense than that from the coil.
Patent GB-1540481-A (GB)
Title: Ion exchange regeneration process
IPC: B01J49/90
Filed: 1976-03-31
Abstract: The known method is improved by   (a) largely preventing any displacement relative to one another in the flow direction of those liquid particles which are fed to the bed simultaneously or immediately after one another, until reaching the discharge from the bed container, and (b) keeping constant the co-ion content of the reaction fraction(s) by keeping constant, firstly, the volume of the reaction fraction(s), of the solution supplied from outside and of the liquids discharged from the system and, secondly, the co-ion content of the solution supplied from outside.   As a result it is particularly suitable for employing ion exchange in disposing waste waters in industry and in municipalities and forms a valuable contribution to the protection of the environment.
Patent GB-286512-A (GB)
Title: Washing tank for fibrous materials wound on bobbins
IPC: D01D10/04
Filed: 1927-05-16
Abstract: 286,512. Althoff, W. May 16, 1927. Passing fluids through materials.-Fibrous materials wound on bobbins m are washed in a tank d. The bobbins are placed over perforations i in a false bottom c in the tank, and the upper ends of the bobbins are closed by places p. Several bobbins may be superimposed, being separated by packing-rings o. The perforations in the false, bottom are surrounded; by rubber rings k. The tank and false bottom are lined with rubber. The false bottom may be integral with the tank.
Patent GB-202029-A (GB)
Title: Improvements in a boiler water level controller
IPC: G01F23/64
Filed: 1922-05-10
Abstract: 202,029. Kelly, J. F. May 10, 1922. Alarms, high and low water. - Valves controlling the supply of feedwater to a boiler and the discharge of excess water therefrom are operated by pressure apparatus acted upon by the boiler steam, which is admitted to the apparatus through a. float' valve. The released steam actuates alarm whistles. Valves 12, 13, Fig. 1. in the water inlet and discharge pipes 9, 11 opening into a float chamber 6 in free communication with the boiler are connected to pistons acted upon by boiler steam admitted above or below the pistons through pipes 24, 25. The passage of steam into the pipes 24, 25 is controlled by sliding valves 41 formed with longitudinal steam passages 42. The valves are connected to a centrally-pivoted bar 48, which is linked to a rod 56 carrying arms 57, 58 limiting the upward and downward movements of a float 59. When the boiler water level falls below a certain point, the float rests upon the arm 58, and the bar 48 is so turned by the downward movement of the bar 56 as to move the lower valve 41 to close the entrance to the pipe 34, thus cutting off admission of steam above the piston of the water-inlet valve and allowing the valve to open by the pressure of the steam admitted below the piston through the pipe 25. Similarly, when the boiler level rises above a certain point, the upper valve 41 is so moved as to release the pressure above the piston of the discharge valve 13 thus allowing the valve to open. The released steam escapes through the pipes 38 having alarm whistles 45, 47 at their ends.
Patent GB-1038855-A (GB)
Title: Improvements in or relating to the treating of silicone rubber
IPC: C08J7/056
Filed: 1965-03-29
Abstract: 1,038,855. Contact lenses. DOW CORNING CORPORATION. March, 29, 1965 [May 11,1964], No. 13210/65. Heading G2J. A silicone rubber contact lens (e.g. as prepared according to Specification 922, 871) is rendered hydrophilic by first dipping into a solution of an alkyl titanate Ti(OR) 4  where R si a C 2  to C 4  alkyl radical (especially isopropyl) in an organic solvent. After drying the lens is extracted with hot (e.g.boiling) water and finally immersed in cold water. The lens may be subjected to solvent extraction, and washing by detergent before treatment with the alkyl titanate. The hyrophilic lenses of the invention maintain a continuous tear film on contact with the dye and may be worn for long periods without discomfort.
Patent GB-1478586-A (GB)
Title: Rotary recording/playback head assembly
IPC: G11B5/588
Filed: 1975-04-01
Abstract: 1478586 Rotary recording/playback head assemblies SONY CORP 1 April 1975 [26 April 1974] 13226/75 Heading G5R A rotary head assembly has a recording and/or playback head member 12, 22 secured to resilient support means 27a, 28a, 29a, 27b, 28b, 29b at a location intermediate two spaced apart arms 11a, 11b of a generally U-shaped frame 11 between which arms said resilient support means extends, said arms 11a, 11b being capable of resilient flexing toward and away from one another, and the frame 11 is mounted for movement in a circular path with respect to which the free end portions of the arms 11a, 11b extend generally radially, whereby centrifugal movement of head member 12, 22 is resiliently resisted by the resilient support means and by the resilient flexing of said arms. The head 12 may be mounted on a plate 22 supported by spaced apart resilient plates (15a), (15b), e.g. of carbon fibre (C 1 ), (C 2 ), Figs. 5, 7 (not shown), or sets of wire springs 27a 28a, 29a and 27b, 28b, 29b, extending between end portions of arms 11a, llb of a U-shaped or C-shaped, Fig. 6 (not shown), frame 11 of resilient material. Frame 11 and plate 22 may be of phosphor bronze, notches 11e, 11f increasing the resiliency of arms 11a, 11b. When mounted, via holes 23, 24 of a central arm 11d of frame 11, on a rotating radial arm (8), Figs. 1, 2 (not shown), head 12 and plate 22 are constrained to be resiliently movable relative to frame 11 and arm (8) in a radial direction only, so as to properly contact the record medium with a suitable contact pressure, e.g. 50 to 100 grams without bounce, vibration or mis-tracking. The arm (8) may be secured to a rotating upper drum portion (3) of a helical scan video magnetic tape recorder. The assembly may alternatively be used for recording and playback on a magnetic sheet.
Patent GB-737425-A (GB)
Title: Improvements in or relating to process for ethylene polymerization
IPC: C08L91/08
Filed: 1953-05-12
Abstract: Ethylene is catalytically polymerized at 100 DEG  to 300 DEG  C., 750 to 10,000 p.s.i.g. and in the presence of aliphatic alcohols having 8 or more, e.g. 8 to 18, carbon atoms.  Alcohols specified are 1-octanol, 1-decanol, 1-dodecanol, iso-octyl, iso-decyl and iso-tridecyl alcohols, or mixtures, and mixtures produced by the oxonation of olefins such as a C7 stream.  The polymerization may be batchwise, continuous or semi-continuous and catalysts which may be used are molecular oxygen, lauroyl, di-t-butyl, benzoyl, furoyl and dimethyl peroxides, cumene and t-butyl hydroperoxides, benzo- and acetoperacids and hydrogen peroxide.  The polymer is recovered by extraction with methanol, filtration and vacuum stripping.  The products may have a molecular weight of 800 to 5000.  Blends with hydrocarbon waxes containing, for example, 80 to 99.5 per cent paraffin wax are useful in coating or impregnating paper or fabric. U.S.A. Specification 2,504,400 is referred to.
Patent GB-552681-A (GB)
Title: Improvements in or relating to the production of viscose
IPC: D01F2/08
Filed: 1941-10-15
Abstract: 552,681. Cellulose xanthate. BRITISH CELLOPHANE, Ltd., HEAVEN, G. S., and BUTLER, E. Oct. 15, 1941, No. 13287. [Class 2 (ii)] Regenerated cellulose material is used in the preparation of viscose by adding water to the extent of at least 30 per cent. of the dry weight of cellulose, uniformly distributing the water in the material, treating with cold aqueous caustic soda solution in the proportion of at least 1.7 mols. of NaOH per glucose unit of the cellulose so that the whole of the aqueous solution is retained by the cellulose and the whole of the cellulose is converted into alkali cellulose, and thereafter treating the alkali cellulose with carbon bisulphide and then dissolving the cellulose xanthate by the addition thereto of water or dilute alkaline solution to produce viscose. Waste material obtained in the production of regenerated cellulose filaments, films, and the like and articles made therefrom, may be utilized. The material is preferably cut or shredded into small pieces. Prior to use, the_ material is freed from any surface coating, e.g. by soaking in water or dilute alkali and scraping, and then soaking in water to remove glycerine or other softening agent. Preferably a strong solution of caustic soda solution is used, e.g. 44 per cent. The caustic soda is incorporated slowly, preferably with continuous mixing. Penetration of the alkali may be assisted by using a wetting agent. The alkali cellulose may be treated directly with carbon bisulphide without any previous ripening. The xanthate is dissolved in dilute caustic soda and stirred for several hours. The viscose obtained may be used by itself for the production of filaments or films, or it may be blended with viscose made from wood pulp. Regenerated cellulose films made from the viscose have satisfactory bursting resistance, tenacity, and elongation. Specification 552,682 is referred to.
Patent GB-917241-A (GB)
Title: Manufacture of carotenoidal substances
Inventor: BARTON DEREK HAROLD RICHARD
IPC: A23L1/275
Filed: 1960-04-14
Abstract: Compounds of the general formula <FORM:0917241/IV (b)/1> (wherein R1 is the 4-hydroxy-3-oxo-2.6.6-trimethyl-cyclohexadien-(1.4)-yl [or 3.4-dioxo2.6.6-trimethyl-cyclohexen-(1)-yl] group and R2 stands for this group or is the 2.6.6-trimethylcyclohexen-(1)-yl group and wherein the broken line denotes that the central bond is optionally a double or triple bond, and enolacetates thereof), are obtained by oxidising with molecular oxygen a 1.18-disubstituted-3.7.12.16 - tetramethyl-octadecanonaene-(1.3.5.7.9.11.13.15.17) or 1.18-disubstituted-3.7.12.16-tetramethyl - octadecaoctaen - (1.3.5.7.11.13.15.17)-yne-(9), wherein one of the substituents is the 3 - oxo - 2.6.6-trimethyl-cyclohexene-(1)-yl group and the other is this group or the 2.6.6-trimethyl-cyclohexen-(1)-yl group, in the presence of an enolising agent and, where the enol-acetate is required, acetylating the oxidation product.  The all - olefinic substances obtained may be used as colouring materials in the food and cosmetic industries.  Those substances containing a central triple bond may be hydrogenated to form all-olefinic compounds. Specified starting materials include canthaxanthin and its 15.151-dehydro derivative and echineone and its 15.151-dehydro derivative.  The starting material may be shaken in an inert solvent or diluent in the presence of air or oxygen until the required amount of oxygen is taken up.  The enolizing agent may be potassium t-butoxide in t-butanol; sodium or potassium methoxide or ethoxide in methanol or ethanol; sodamide or potassamide in benzene, toluene, or ether; or sodium hydride in benzene, toluene, or ether.  In an example canthaxanthin in benzene is added to potassium t-butoxide in t-butanol and the mixture is shaken in oxygen at room temperature. Water and chloroform are added and the mixture is shaken with 2N-hydrochloric acid.  The organic layer is separated, washed with sodium bicarbonate solution, diluted with benzene and evaporated under reduced pressure.  The residue is dissolved in chloroform/ethanol mixture from which astacene is crystallised. A portion of the crude astacene is acetylated in pyridine with acetic anhydride to give astacene diacetate.  In another example, 15.151 - dehydro-canthaxanthin is similarly oxidised to produce 15.151-dehydro-astacene.  This may be partially reduced in ethyl acetate in presence of a catalyst to give "central-cis" astacene which on exposure to daylight is converted to astacene.  In another example 15.151-dehydro-echineone is oxidised to 3-oxo-15.151-dehydro-echineone.  For identification purposes, this compound as well as the astacene of the other examples may be converted into their phenazine derivatives by reaction with o-phenylene diamine in glacial acetic acid.
Patent GB-291089-A (GB)
Title: Improved process of and apparatus for the regulation of power generating installations, more particularly of electric power stations
IPC: F23N1/00
Filed: 1928-05-05
Abstract: 291,089. Askania-Werke Akt.-Ges. vorm. Centralwerkstatt Dessau und C. Bamberg-Friedenau, (Assignees of Allgemeine Elektricitõts Ges.). May 28, 1927, [Convention date]. Central station plant, special arrangements of. -Variation of load on an electric or other power generating station is used to regulate not only the supply of steam to the engine but also to regulate directly the supply of fuel and nir to the boiler furnaces, and also if desired to regulate auxiliary apparatus such as feed water pumps, heat accumulators, tension regulators, superheater valves, condensate pumps &c. The power units can be arranged in groups so that one group is regulated in a different manner to another group. A controlling force directly dependent on the output of the plant is produced by any means such as a watt meter coupled to a jet pipe 74. Variations in the pressure produced in a pipe 45 by movement of the jet pipe are communicated to a diaphragm 48 operating a jet pipe servomotor controlling the steam valve 21 of the engine 1, and to other jet pipe mechanisms controlling, for example, a resistance in circuit with a motor 28 driving a chain grate, a valve 68, in the air supply conduits and a feed water valve 74. The operations of the jet pipes may be adjusted by sliding members 25 operating between the jet pipe and an abutment controlled either by a spring or by a restoring force derived from the regulated-elements, for example the steam valve 21, a blower 37 coupled to the chain grate or the boiler steam pressure. A governor 54 may control the position of a member 25 according to the speed of the engine. An electric generating plant divided into self-contained units is described in which the jet pipes 14<1> producing the controlling force for the respective units are controlled by solenoids traversed each by a definite proportion of the total output, determined by the setting of variable resistances associated with each solenoid.
Patent GB-645770-A (GB)
Title: Improvements in and relating to high lift appliances for swept-back wings
IPC: B64C23/00
Filed: 1948-05-18
Abstract: 645,770. Aircraft wing flaps. OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AERONAUTIQUES. May 18, 1948, No. 13465. Convention date, May 23, 1947. [Class 4] An aircraft having swept-back wings comprises high-lift flaps carried by the swept-back trailing edges of the wings and adapted to be swung downwardly and rear-wardly, and control means for operating the flaps so arranged that the flaps in their operative position have a smaller inclination to the lateral axis of the aircraft than in their inoperative, i.e. retracted, position. Fig. 1 shows a swept-back wing 2 having a flap 1, shown in its inoperative position by full lines and operative position by dotted lines, universally jointed at A to the wing. The inboard end of the flap 1 is mounted on a linkage (Fig. 2) comprising rods 4 and 8 hinged to fixed points 5 and 9 respectively on a fuselage 3, and rods 7 and 10 hinged to rod 8 and to points on rod 4 and the flap 1 respectively. A jack 12 serves to move the flap from the inoperative position to the operative position indicated by dotted lines. The linkage is housed within the fuselage 3. In a modification (Figs. 3 and 4, not shown) the linkage is disposed beneath a flap on a highwing aircraft. The mechanism is so arranged that the aerodynamic load on the flap tends to move it into the operative position.
Patent GB-391616-A (GB)
Title: Improvements in switch-chambers for expansion circuitbreakers
IPC: H01H33/16
Filed: 1932-05-10
Abstract: 391,616. High-tension switches. SIEMENS-SCHUCKERTWERKE AKT.- GES., Siemensstadt, Berlin. May 10, 1932, No. 13473. Convention date, Sept. 23, 1931- [Class 38 (v).] In an " expansion " switch the circuitbreaking gap beneath the conducting liquid and between the fixed and movable contacts is restricted into a cylindrical space of small diameter and uniform width in which the movable contact acts as a plunger. In the arrangement shown in Fig. 1 where the movable contact 18 passes in known manner through an orifice in an intermediate plate held down together with the cover part 10 by the spring pins 15 until adequate pressure is developed, the plate carries or is formed with an insulating cylinder 19. This ensures a restricted section for the current through the liquid and in consequence an increase of resistance so that the current density at the orifice never becomes great enough to cause local evaporation in the closing operation. In the modification shown in Fig. 2 applied to a switch in which the pressure when adequate is relieved through superposed plates 28 held together by spring pins the holes in the discs form a continuous cylindrical bore through which the contact rod 33 passes. The discs may be made of porous material which soaks up the liquid.
Patent GB-135220-A (GB)
IPC: F16L23/028
Abstract: 135,220. Ferrum Akt.-Ges. Feb. 13, 1918, [Convention date]. Void [Published under Seet. 91 of the Act]. Butt joints.-In a joint for wrought-iron pipes the flanges are formed in two parts, the inner part b and outer part d. The inner flange b is itself formed in two or more parts having ribs, and can be placed freely on the pipe which has annular grooves to receive the ribs. The faces of the parts b, d are coned so that d may be slipped over b and on tightening the bolts, the part b is compressed on the pipe. The part b may be formed with a rim c so that on further tightening the bolts, a longitudinal thrust only is exercised to compress the packing of the joint.
Patent GB-889451-A (GB)
Title: Improvements in or relating to the manufacture by extrusion of wrought metal semi-finished products
Inventor: HOYLE GEOFFREY
IPC: C21D7/13
Filed: 1959-04-21
Abstract: 889,451. Extruding; working at specified temperatures; making ingots. BRITISH IRON & STEEL RESEARCH ASSOCIATION. June 23, 1960 [April 21, 1959], No. 13547/59. Classes 83 (2) and 83 (4). In the extrusion of steel alloys of the type whose carbon content is sufficiently high to form, when the alloys freeze, a eutectic which appears as large cells, which contains little or no austenite and can be hardened by quenching to give a substantially martensitic structure, a cast ingot of the alloy is maintained at or above the maximum extrusion temperature for such time that the structure of the alloy becomes more homogeneous upon subsequent cooling, and the ingot is then extruded at the maximum extrusion temperature. A high-speed tool steel alloy is cast in a graphite mould, allowed to solidify, stripped from the mould and, if necessary after fettling, and machining, transferred to a furnace where it is maintained at a temperature of 1250-1300‹ C. for half to one hour. Alternatively, the cast ingot may be cooled and annealed before transfer to the furnace. For some alloys, the temperature may be maintained above maximum extrusion temperature and the ingot subsequently cooled to extrusion temperature. After extrusion the product may be quenched in air, oil or hot salt and temperature. The product is finally ground to finished size and steam tempered and nitrided. Examples are given for the extrusion of a particular tool steel alloy. Twist drills may be extruded by using a fluted extrusion die.
Patent GB-543232-A (GB)
Title: Improvements in apparatus for dropping bombs from aircraft
IPC: B64D1/04
Filed: 1940-09-02
Abstract: 543,232. Bomb dropping. SAUNDERS-ROE, Ltd., and KNOWLER, H. Sept. 2, 1940, No. 13734. [Class 9 (ii)] [Also in Group XXXIII] A sliding shutter for a bomb-release aperture beneath the wing of an aircraft comprises a sheet of metal or other flexible but non- collapsable materials 14 sliding at its edges in guides having scroll-like continuations 17 within which the shutter moves as the aperture is opened. The edges of the shutter run between flanges on the wing ribs 11, and the lateral edges of the wing covering at the opening. The shutter is moved by sprocket wheels 18 engaging holes in the sheet, the sprockets being mounted on a shaft 19 turned by an electro-motor or by hand. Alternatively the shutter may be moved by an endless cable passing around a driving pulley.
Patent GB-580895-A (GB)
Title: Improvements in or relating to rotary pumps
IPC: F04C14/26
Filed: 1944-07-18
Abstract: 580,895. Rotary pumps. STEVENS, A. H. (Eaton Manufacturing Co.). July 18, 1944, No. 13739. [Class 110 (ii)] A rotary pump of the n and n + 1 lobe type, with rotors 20, 22, has an axially-displaceable end wall 48, secured to rotor 22, which moves when the delivery pressure exceeds a predetermined figure, and overcomes the load of a spring 78. The inner rotor 20, is driven by the outer rotor 22 and rotates on an eccentric portion 40 of the block 28. The chamber 90, at the back of the wall 48, communicates with suction ports 36, 32. The latter, and a similar delivery port 34, are crescent-shaped. An enti-friction washer 80 has a pin 82 as a guide. The spring 78 has a widened end to fit into a cap portion 70 with friction, which prevents rotation of the spring and a disc 76. A driving shaft 46 is driven from an outer shaft 116 through a coupling 100 supported by a bearing 98. A sealing device 104 is provided. An opening 106 allows liquid leaking along the shaft from the pump, to escape to the suction, the liquid acting as a lubricant. The connection between the shaft 46 and the coupling 100 allow sliding of the shaft. A spring 110 presses between the shaft and the coupling which bears against 98. The interior right-hand end of the coupling 100 is polygonal in shape and receives a similarly shaped end of shaft 46. A spigot 112 is provided for aligning the pump when the latter is secured to an engine, or other, block. To prevent relative axial movement between a driving shaft 116 and the coupling 100, a split spring ring 120 is arranged as shown. In a modification, the wall 48 may move relatively to the shaft 46 to which it is coupled by a pin, and slot connection. The pump is of the type described in U.S.A. Specification 1,682,563.