baber/WOPTO huggingface dataset:
Patent GB-838389-A (GB)
Title: Explosion-proof electric float switch for fuel supply tanks for aircraft
Inventor: OLIVEAU JOHN V
IPC: H01H35/18
Filed: 1958-09-02
Abstract: 838,389. Stuffing-box substitutes. AEROTEX CORPORATION. Sept. 2, 1958, No. 28190/58. Class 122 (5). [Also in Groups XXV and XXXVII] In an explosionproof electric float switch mounted in the base of an aircraft fuel tank, leakage of fuel into the switch chamber 11 is prevented by a metallic bellows 29 sealed to the switchoperating lever 25 and to the cover 30 of a hall-and-socket bearing 26. The latter is designed to prevent flames from passing into the tank.
Patent GB-445418-A (GB)
Title: Means for commutation in electric converting arrangements employing discharge devices
IPC: H02M7/51
Filed: 1934-10-02
Abstract: 445,418. Converting. ENGLISH ELECTRIC CO., Ltd., 28, Kingsway, London. Oct. 2, 1934, No. 28192. Convention date, Nov. 25, 1933. [Class 38 (ii)] In a parallel-type inverter comprising valves 1, 2, 3 and transformer 4, 5, 6, in addition to the normal commutating condensers 7, 8, 9 commutating potentials are injected in the anode circuits to extend the period during which the anode voltage of the valves is negative. In the form shown each anode lead contains a current transformer 13 which is supplied from a current transformer 12 in the cathode lead of an adjacent valve. When current starts in the valve 2 a commutating impulse is injected in the anode lead of the valve 1. A resistance 15 and condenser 14 may be connected in the circuit between the current transformers to cause phase lag of the impulse.
Patent GB-943418-A (GB)
Title: Improved solid particulate sodium nitrate compositions
Inventor: LONG PETER ALAN
IPC: C01D9/20
Filed: 1960-08-16
Abstract: Solid particulate NaNO3 has incorporated therein a minor proportion by weight of soda ash to reduce its caking tendency.  A suitable amount is 0.2-5%. The soda ash is preferably in powder form e.g. small crystals whilst the NaNO3 may be as small crystals granular or crushed pellet form.
Patent GB-1461099-A (GB)
Title: Purification of waste waters
IPC: C02F11/13
Filed: 1974-06-26
Abstract: 1461099 Settling tank RUHRCHEMIE AG 26 June 1974 [3 July 1973] 28422/74 Heading B1D A sedimentation and flotation tank for separating solids (e.g. metal oxides, hydroxides or insoluble metal salts) and liquids (e.g. aldehydes alcohols, esters, ketones or derivatives of carbonyl compounds) from waste water comprises an inclined parallel plate separator and a warm water input. Contaminated water e.g. from a chemical plant is fed through pump 1 to a point below the surface accompanied by warm water from a steam distillation col-  umn 11 through pipe 16. Floating matter is skimmed off by rotary paddle 3 and sediment is drawn off through pump 10 and steam distilled. Warm water from separator 13 and centrifuge 14 is returned to the settling tank to assist separation of solids saturated with organic liquids and entrained in water. Purified water ascends in compartment 7 and overflows weir to discharge passage 8 which has a siphon 9 to maintain a constant level in the apparatus.
Patent GB-1337483-A (GB)
Title: Method and mill for comminuting raw material
IPC: B02C19/06
Filed: 1971-06-17
Abstract: 1337483 Jet pulverizers N H ANDREWS 17 June 1971 [30 July 1970] 28529/71 Heading B2A A jet-and-anvil type. mill comprises a housing forming a cylindrical milling chamber 12, Fig. 1, a material feed injector 29 and a rotatable anvil arrangement 18, 20, a discharge duct 38, Fig. 2, for gas and partly ground material and an accelerator duct 39 including a nozzle 40 and a venturi 42. This accelerates and reinjects the previously discharged ground material through the peripheral wall of the housing. The material injector 29 includes a funnel 30, nozzle 32 and venturi 34. The materia1 is comminuted by impact with the anvils 20. The finely ground product is discharged at 14. The shaft 16 of the anvil assembly may be water-cooled and may run in water-cooled bearings. The stuffing box (56) of the shaft, Fig. 4 (not shown) is protected by permitting gas to flow into the mill via a small clearance  (54), so that dust does not work itself into the stuffiing box. In a second embodiment, the gas/material mixture is separated by a cyclone (100) instead of by classification in the mill itself, and the separated material is aspirated into the mill by a nozzle (108) and venturi (110), Fig. 5 (not shown). In a third embodiment, the milling chamber serves also as a classification chamber and includes spaced nozzles (126), Fig. 7 (not shown) with a manifold (128). A fourth embodiment employs a toroidalshaped milling and classification chamber (12"') Fig. 9 (not shown).  In a fifth embodiment, the separator material from a cyclone 174 is mixed with more fresh raw material from a hopper 182 before recycling via a nozzle 212, Fig. 10.
Patent GB-480889-A (GB)
Title: A new or improved table or stand
IPC: F24C15/08
Filed: 1936-10-21
Abstract: 480,889. Tables or stands. TWIGG, C. H., and PULLEN, H. E. Oct. 21, 1936, No. 28573. [Classes 52 (iii) and 52 (v)] [Also in Group XI] A collapsable stand primarily for oil cooking- stoves comprises a top a and shelf d of flanged sheet metal and legs g adapted to pass through apertures in the shelf and take into corresponding sockets on the underside of the top, the shelf being supported by collars or projections on the legs. The shelf is slightly larger than the top so that it will take over it in the collapsed position with the legs inside. The shelf has apertures for the stoves k and arcuate slots n to receive plates p for warming.
Patent GB-207343-A (GB)
Title: Appliances for playing a new bat and ball game
IPC: A63F7/00
Filed: 1922-10-20
Abstract: 207,343. Reader, L. N., and Haynes, C. A. Oct. 20, 1922. No Patent granted (Sealing fee not paid). Table games; outdoor games. - A device for fixing across a table or playground for use in bat and ball games, consists of a number of cords stretched between two uprights and spaced apart in such a manner as to form a cage or cages in which the ball mav be trapped. As shown in Fig. 2, four cords c are stretched between two uprights a secured to a table by clamps b. Spacens e hold the cords apart, thus forming a cage in which a ball d may be trapped. An upright for use in an outdoor game is shown in Fig. 1 and consists of a post a having a baseplate n and a pointed end f projecting through the base-plate into the ground. Adjustable stays m secured to anchoring-pins k maintain the post in an upright position.
Patent GB-1427919-A (GB)
Title: Sheet feeding station for processing machines
IPC: B65H3/10
Filed: 1972-06-19
Abstract: 1427919 Feeding sheets IMAGING TECHNOLOGY Ltd 19 June 1973 [19 June 1972] 28663/72 Heading B8R Sheets are separated from a pile in a magazine 1 by suction applied through an axial row of openings 8 in a roller 2. When an air blower is started, air is drawn through the openings 8 and blown through a pipe 5 and through holes in a front plate 4 of the magazine to expand the pile and draw the first sheet against the openings 8, which are in a flattened portion of the roller at an angle to the plane of the sheets in the pile when the roller is in the initial position shown, so as to flex the end of the first sheet and draw it above the plate 4. When a sheet covers the openings 8, reduced pressure in the roller actuates a switch to start a motor and rotate the roller 2 to carry the sheet between the rollers 2 and a roller 11 and on to bands 10 entrained in grooves in the roller 2. The suction in the openings 8 is cut off when the holes are to the right of a partition 14. For use with sheets of lesser width, the endmost openings 8 can be blanked off by rotatable valve tubes in the roller 2, attached to a selector lever settable in two positions. The pile may alternatively be arranged with the sheets vertical or for bottom feed.
Patent GB-722313-A (GB)
Title: Improvements relating to apparatus embodying vibrating or pulsating screens and the like
IPC: H02K33/18
Filed: 1950-11-23
Abstract: 722,313. Reciprocating machines. ROBERTS, E. G. L. Dec. 31, 1951 [Nov. 23, 1950], No. 28690/50. Class 35. An electromagnet vibrator comprises a fixedfield magnet energized by D.C. or A.C. or a permanent magnet and a reciprocating member actuated by a coreless moving coil which is energized by an intermittent or alternating current, the intermittence or periodicity being controlled to control the frequency of vibration. Fig. 1 shows a fixed-field system 1 and a moving coil 2 secured to a rod 3 which is coupled to another rod 6 to vibrate a member of an apparatus to be vibrated. Fig. 2 shows a screening apparatus having a table 8 which is pivotally mounted on four links 10 and adapted to be vibrated by the rod 6. The vibrated table 8 can be tuned by adjusting the compression of springs 16, 17 mounted between the table top and a fixed frame 9. The links 10 may be replaced by springs 26, Fig. 4 (not shown). Alternatively, the links 10 may be located on top of the table 8 and the springs 13 at the underside. Fig. 6 shows a feeder 27 supported on several springs 28 and vibrated by a number of vibrators 1. In another modification, a circular table 33, Fig. 7 (not shown), is directly connected to the vibrator 1 but supported by a number of coiled springs.
Patent GB-488778-A (GB)
Title: Improvements in or relating to method of and apparatus for receiving and indicating radiant energy
IPC: G01J5/42
Filed: 1937-10-21
Abstract: 488,778. Electric signalling systems. HAYES, H. V. Oct. 21, 1937, No. 28736. Convention date, Oct. 31, 1936. [Class 40 (i)] [Also in Group XIII] Apparatus for receiving and indicating radiant energy comprises a two-part casing 4, 6 with separating diaphragm 8, the part 4 having a conical chamber 10 containing carbonized vegetable fibre covered by a rocksalt window 12. The diaphragm forms one electrode of a condenser, the other electrode being mounted on a rod 18 which is adjustable in a threaded sleeve 22. Insulating sleeves 24, 28, separated by a sleeve 26, are provided. The two sides of the diaphragm are connected by a valve-controlled byepass 34. The casing and rod 18 are connected to an amplifier 37 and a response instrument 38. The apparatus is suitable for receiving and detecting single impulses or a succession of impulses of low frequency, e.g. in a signalling system emitting radiant energy in a wide range of wave lengths. When an impulse is received by the substance in the chamber 10 the temperature of the surrounding gas is raised and the movement of the diaphragm 8 varies the capacity of the condenser and actuates the instrument 38. The byepass 34 is so small that the deflection of the diaphragm is not appreciably affected thereby, but equalization of pressure on the two sides of the diaphragm then takes place through the byepass in preparation for the next impulse. The byepass also neutralizes the effect of ambient temperature changes and ensures that the zero and sensitivity of the instrument remain substantially unchanged. The byepass may be provided by an aperture in the diaphragm and may not be adjustable. The apparatus is suitable for infra-red signalling through fog.
Patent GB-834515-A (GB)
Title: Improvements in or relating to potassium monopersulphate
IPC: C01B15/08
Filed: 1958-09-08
Abstract: Potassium monopersulphate monohydrate is prepared in crystalline form by forming an aqueous solution of the anhydrous salt, adding ethanol and cooling to throw down crystals and thereafter successively adding ethanol to the filtrate to induce turbidity, cooling and filtering. The crystals ultimately obtained have an active oxygen content of 9.41%, corresponding to KHSO5.H2O.  An alternative method of preparing the crystalline monohydrate is to dissolve the anhydrous persulphate in half its weight of water and to crystallize overnight at 4 DEG  C.
Patent GB-973936-A (GB)
Title: Improvements in or relating to crucibles or converters
IPC: C21C5/50
Filed: 1961-08-10
Abstract: 973,936. Metallurgical converters. VERE1- NIGTE OSTERREICHISCHE EISEN-UND STAHLWERKE A.G. Aug. 10, 1961 [Oct. 3, 1960], No. 28928/61. Heading F4B. The middle, carrying portion of a converter, welded to the converter shell, consists of a ring having two L-shaped reinforcing ribs attached to the ring to form an upper and a lower channel. As shown, the converter body 1 has a welded-on ring 4 to which are welded an upper rib 5 and a lower rib 6 forming channels 7 and 8 respectively. A thin metal sheet 9 may cover the channel 7 and the channel 8 may house conduit 10 for the supply of cooling water to the trunnions. In a modification, Fig. 5, the middle portion may comprise members 11, 11<SP>1</SP> carrying trunnions 13 and members 12, 12<SP>1</SP>,the plane of partition of the member including an angle # of 35-15 degrees.
Patent GB-795778-A (GB)
Title: Improvements in or relating to the production of moistureproof films
Inventor: BERRY WILLIAM
IPC: C08J7/048
Filed: 1955-10-11
Abstract: 795,778. Moistureproof coatings. BRITISH CELLOPHANE, Ltd. Oct. 5, 1956 [Oct. 11, 1955], No. 28978/55. Addition to 677,926 and 744,677. Class 140. Moistureproof film, sheet or like material is produced by applying to a base film of a watersensitive non-fibrous organic material, e.g. regenerated cellulose, a partially condensed hydrophilic urea-formaldehyde resin from an aqueous dispersion of pH 5 to 2, drying the treated film without curing the applied resin to an hydrophobic state, and then applying to the dried film an aqueous dispersion of vinylidene chloride polymer or copolymer of pH 4 to 14, and finally heating to evaporate the water, to cure the applied resin to the hydrophobic state and to consolidate the surface coating. The vinylidene chloride may be polymerized with acrylonitrile, methacrylonitrile vinyl chloride, vinyl acetate, styrene, alkyl esters of acrylic or methacrylic acids having 1 to 5 carbon atoms in the alkyl group, or mixtures thereof, together with itaconic or citraconic acid or anhydride or mesaconic acid or a mixture thereof, e.g. as disclosed in Specification 703,010. The term urea " includes " thiourea " and the term " urea-formaldehyde " includes " urea-formaldehyde-aliphatic alcohol resin."
Patent GB-142048-A (GB)
Title: Improvements in gold alloys
IPC: C22C5/02
Filed: 1919-11-21
Abstract: 142,048. Belais, D. Nov. 21, 1919. Alloys. - An alloy, particularly suitable for jewellery, consists of about 75-85 per cent of gold, 10-18 per cent of nickel, 2-9 per cent of zinc, and <1>/30-<1>/2 per cent of platinum.
Patent GB-636506-A (GB)
Title: Improvements in or relating to irreversible driving mechanisms
IPC: F16B1/04
Filed: 1947-10-21
Abstract: 636,506. Locking levers. FAIREY AVIATION CO., Ltd., and HUXLEY, M. F. Oct. 31, 1947, No. 29114. [Class 80 (iii)] An irreversible driving mechanism, for aircraft controls and other purposes, comprises a driving member 10 mounted freely on a shaft 11 to be driven, a T-shaped member 18 fixed on the shaft and carrying two pivoted pawls 21, 22, and a fixed arcuate member 17 concentric with the shaft and having a circumferential V-groove 25 normally engaged under the action of a spring 26 by the correspondingly shaped ends of the pawls. When at rest the engagement of the pawls 21, 22, with the member 17 prevents any movement being transmitted from the shaft 11 back to the lever 10. Upon actuation of the lever 10 crossbars 27 carried thereby release either one of the pawls and the shaft 11 is then driven by one of two adjustable screws 30, 31, in the shanks of the pawls engaging the stem of the member 18.
Patent GB-809622-A (GB)
Title: Blasting initiator
IPC: F42B3/12
Filed: 1956-09-25
Abstract: 809,622. Blasting fuzes. DU PONT DE NEMOURS & CO., E. I. Sept. 25, 1956 [Jan. 13, 1956], No. 29235/56. Class 9(1) An electric delay igniter comprising a metal casing closed by a plug through which extend the leg wires of the igniter is provided with a shunt to prevent arcing, the shunt being within the plug and consisting of a layer of fuzible resistance film contacting the bared portions of the leg wires and a metal layer superposed on the first-mentioned layer. The casing 1, Fig. 1, may be of aluminium or gilding metal and contains a base charge 2, e.g. PETN or RDX, a primer charge 3, e.g. lead azide or a fulminate, a delay element and an ignition composition 6 such as boron with red lead or a mixture of bismuth, selenium and potassium chlorate. The delay element may be a lead tube 4 containing a gasless composition such as a barium peroxide-selenium mixture or a boron-red lead mixture. The shunt 11 consisting of a metal layer 11A and a fuzible resistance layer 11B, Fig. 4, may be folded about the bared wires with the film 11B in contact with the wires in various ways, e.g. the two layers may span the wires twice. The plug 9 may be of natural or synthetic rubber. The shunt may be a conducting rubber vulcanized to the metal, which may be shim brass, steel, nickel-chromium alloy, copper or aluminium. The rubber film may be a standard commercial product consisting of carbon particles in a rubber matrix with a resistance of 30 ohms/sq. cm. Instead of rubber a conducting vinyl resin may be used.
Patent GB-159311-A (GB)
Title: A new or improved method of and apparatus for the extraction of juices, pectin and the like from fruit and other vegetable matter
IPC: A23L2/04
Filed: 1919-11-24
Abstract: 159,311. Nicholson, J. Nov. 24, 1919. Steam cooking - apparatus. - In extracting juices, pectin, &c. from fruit or vegetable substances, such as gentian root, the fruit, pulped or not, is contained in a strainer suspended in a vessel containing water, and is heated and agitated by injection of steam. A strainer c formed of woven copper wire supported by metal strips g and bands d, h rests upon projections f in a chamber a having a tightly fitting lid j. Steam is injected through pipes l, k, which terminate respectively in perforated tubes n which discharge steam into the fruit, and a tube m which may be perforated to discharge steam into the water or may be closed and serve only as a heating-coil. The base of the vessel is fitted with a draw-off pipe r for the juice and a draw-off pipe p for the pulp. The cover may have a chambered valve for feeding fresh quantities of fruit.
Patent GB-820767-A (GB)
Title: Tamper-proof housing
IPC: B65D77/30
Filed: 1957-09-20
Abstract: 820,767. Boxes ; packages. AMERICAN HOME PRODUCTS CORPORATION. Sept. 20, 1957 [Sept. 24, 1956], No. 29589/57. Classes 18 and 94(1). [Also in Group VI] A housing for an article such as an ampoule or lipstick, comprises in one form, Figs. 1 and 3, a body 1 of synthetic plastic divided into portions 2 and 3 by window apertures 4a, b, c and d which define narrow, frangible bridges 6a, b, c and d connecting the two portions. The portion 3 is extended by a tube 7 for the reception of an injection needle fixed to an ampoule 9, the tube being closed by an integral end wall 11. The portion 2 is closed by a cap 12 which is heatsealed or cemented in position after the ampoule and needle have been inserted. The package is opened by twisting the portion 3 relative to the portion 2 to fracture the bridges 6, and cannot be reclosed without showing evidence of having been opened. In a second form, Fig. 7, the housing is made in two halves 202, 203, joined together by a longitudinal seam after the ampoule or other article has been inserted.
Patent GB-366947-A (GB)
Title: Improvements in and methods of using fuels in internal combustion engines
IPC: F02M1/14
Filed: 1930-10-03
Abstract: 366,947. Oil engines ; actuating- materials. HELMORE, W., Royal Aircraft Establishment, South Farnborough, Hampshire. Oct. 3, 1930, No. 29618. [Classes 7 (ii) and 7 (iii).] In a compressionignition engine, a primer is introduced into the engine cylinder separately from, and in advance of, the fuel oil. It is mixed with the intake air and may comprise a non- explosive solution in a non-explosive volatile solvent. The supply is controlled simultaneously with the supply of fuel oil or by the suction of the intake air. In apparatus as shown in the Figure, ethyl nitrate dissolved in ethyl alcohol is fed past a needle valve 3 to the air intake 1. The needle valve 3 is regulated by a lever 6 which is controlled either by a piston 8 acted on by the engine suction or by a link 11 connected to the fuel supply. According to a modification, the primer is fed into the air intake by a retractable wick exposed to the flow of the intake air. The primer may be used intermittently. Suitable primers are methyl or ethyl nitrate, or butyl or amyl nitrite. Specifications 294,129, [Class 91, Oils &c.], and 352,550 are referred to.
Patent GB-389555-A (GB)
Title: Manufacture of sulphurised dyestuffs and their application
IPC: C09B49/10
Filed: 1931-10-26
Abstract: Sulphurized dyestuffs are prepared by baking a leuco compound of an indophenol from a carbazole and a nitrosophenol with sulphur in presence of an additional nitrogenous substance of the kind prescribed in Specifications 199,360, 210,006, 234,681, 243,739, 270,348, or 280,595, [all in Class 2 (iii), Dyes &c.], the sulphur required for the sulphurization being formed by decomposition of an alkali polysulphide in the reaction mixture to be baked.  If necessary such decomposition is effected by addition of a suitable substance such as ammonium chloride; the sulphur is thereby intimately mixed in the mass in a finely-divided state and pure, greenish-blue dyestuffs are thus obtained in improved yield.  In examples: (1) The indophenol from carbazole and nitrosophenol is reduced by means of sodium polysulphide solution; urea, symm. di-o-tolylurea and ammonium chloride are then added and the mixture then dried and baked at about 200 DEG  C.; the product dyes p  pure greenish-blue shades from a clear vat: (2) the above indophenol is reduced by means of ammonium polysulphide solution, urea and symm. di-o-tolylurea then added, the mixture dried and baked at about 200 DEG  C.; caustic soda may also be added prior to drying and baking to give a product dyeing in still greener shades than that of (1); advantageously a dispersing agent, such as a sulphoricinate, a derivative of an aromatic sulphonic acid or a thiophenol, may be added during reduction or the addition of the specified nitrogenous bodies: (3) the indophenol from carbazole and nitrosophenol is reduced with sodium polysulphide solution, urea, symm. di-o-tolylguanidine, sodium, and ammonium chlorides then added, the mixture dried and baked at about 200 DEG  C.: a dyestuff giving still more greenish tints is obtained; by replacing symm. di-o-tolylguanidine by other diphenyl derivative, dyeings having a more reddish tint are obtained.  An example of the dyeing of cotton with (1) is also given.  The sulphurization of indophenols derived from N-alkyl-, N-aryl, or N-aralkyl-carbazoles is also mentioned. Specifications 2918/09, 9689/09, 14143/09, and 18822/09, [all in Class 2 (iii), Dyes &c.], also are referred to.  The Specification as open to inspection under Sect. 91 relates to the baking of a leuco compound of the indophenol from a carbazole and a nitrosophenol in presence of finely-dispersed sulphur, and, if desired, in presence of a finely-dispersed added body.  This subject-matter does not appear in the Specification as accepted.