baber/WOPTO huggingface dataset:
Patent GB-889647-A (GB)
Title: Process for the purification and decolorization of pre-treated technical sugar solution
IPC: C13B20/14
Filed: 1959-09-22
Abstract: Sugar solutions treated with lime and carbon dioxide are purified and decolorized by passage through an anion exchanger charged with one or more ions, e.g. sulphate, carbonate, nitrate or chloride ions to replace at least part of the unwanted organic anions, followed by passage through a cation exchanger charged with ammonium ions to replace alkali-metal and calcium ions; the sugar solution is preferably treated at 80 DEG  to 95 DEG  C. and, if desired, a "mixed" bed of anion and cation exchange resins in a single exchanger may be used.  Excess calcium hydroxide solution is then added to the sugar solution and precipitated calcium salts, e.g. the sulphate, filtered off, the ammonia liberated in the reaction being used to prepare a regenerating solution for the exchange resins, e.g. a 5 to 8% solution of a mixture of 80 to 90% by weight of ammonium sulphate and 10 to 20% of ammonium chloride. Specification 768,278 is referred to.
Patent GB-410027-A (GB)
Title: Improvements in or relating to mountings for belt and rope pulleys and the like
IPC: F16H7/20
Filed: 1933-11-20
Abstract: 410,027. Bearings. SKEFKO BALL BEARING CO., Ltd., Skefko Road, Leagrave Road, Luton. Nov. 20, 1933. Nos. 32302 and 32303. Convention dates, Nov. 19, 1932 and Dec. 27, 1932. [Class 12 (i).] A mounting for belt pulleys &c. particularly applicable to belt tensioning pulleys comprises a roller bearing d for the pulley spindle c maintained in the plane of stress by a sleeve h which also provides a secondary bearing i and endwise abutment o for the spindle. The sleeve is secured to a support a by a nut k and is filled with lubricant which is forced into the bearings by a screw cap r. A thrust collar q is provided in the spindle c. In amodification, Fig. 3, a ball bearing u pressed axially against a stop v by a spring y replaces the secondary bearing and endwise abutment. A plate n excludes dust from the bearing.
Patent GB-912161-A (GB)
Title: Improvements in and relating to direct current motors for high feeding voltages
IPC: H02K47/20
Filed: 1960-09-20
Abstract: 912,161. Control of D.C. motors. HEEMAF N.V. Sept. 20, 1960 [Sept. 22, 1959; Sept. 12, 1960], No. 32327/60. Class 38 (3). [Also in Group XXXV] A high-voltage D.C. motor 2 for driving a generator 3, e.g. from a traction supply 1, has two armature windings 5, 6 connected to separate commutators 7, 8, and a permanently connected field winding 4. The turns ratio of these armature windings is such that winding 5 generates 90% of the applied voltage, and the winding 6, 10%. The motor is started with switch 11 open as a series motor, the resistance of the field winding serving to limit the current in armature winding 5. When the voltage across winding 5 has risen to 90% of the feeding voltage, the switch 11 is closed to place the armature winding 6 in shunt with the field winding. The motor now operates as a shunt motor. The switch 11 may be replaced by a choke which prevents rapid build-up of shunt current at starting. A separately-excited regulating field 13 may also be employed. The double-wound armature motor may be replaced by a pair of motors coupled together.
Patent GB-486291-A (GB)
Title: Improvements in or relating to public address stabilizing systems
IPC: H04M9/08
Filed: 1937-11-24
Abstract: 486,291. Public address and like systems. RADIO CORPORATION OF AMERICA. Nov. 24, 1937, No. 32382. Convention date, Nov. 28, 1936. [Class 40 (iv)] [Also in Group XL] To prevent acoustic reaction in public address and like systems, the system is adjusted to give a response peak at a pre-determined frequency and the frequency is used to operate AVC to reduce the amplification. The microphone 10 feeds loud-speaker 11 through valves 12 and 13. The output circuit of valve 12 is loaded with a tuned circuit 15, 16, 17 in series with a resistance 18. For normal frequencies the impedance of 15 ... 17 is low and the amplification is determined by resistance 18. At the frequency to which 15 ... 17 is tuned, the impedance becomes high and the resonance peak is obtained, the rise in impedance being determined by resistance 17. A second tuned circuit 19, 20 is loosely coupled to circuit 15 ... 17 and voltage in this second circuit is applied through rectifier 21 to the control grid 23 of valve 13 to reduce the amplification of this valve. Resistance 24 and condenser 25 cause the bias on grid 23 to change only gradually so that the amplification is varied only in response to extended energization of the tuned circuits 15 ... 17 and 19, 20. When such energization ceases, condensers 22 and 25 discharge through resistance 26 and normal amplification is restored. An amplifying stage may be inserted between circuits 15 ... 17 and 19, 20.
Patent GB-285612-A (GB)
Title: Improvements in and relating to screw-capped containers
IPC: B65D41/08
Filed: 1926-12-22
Abstract: 285,612. Shakespeare, H. T. Dec. 22, 1926. Cap-stoppers, screw. -A screw-capped container is provided with a collar b formed with a screw thread and adapted to be slipped over the neck of the container and secured thereto by spinning or flanging over the upper edge of the neck on to an inturned flange e at the upper end of the collar. The flange is turned inwards and downwards to form a sleeve which embraces the neck and an annular groove or depression d is formed in the upper part of the collar for the reception of the out-turned edge of the neck. In a modification, the flange of the collar turns inwards and upwards and, together with the neck of the container, is turned or spun outwards to form a bead which may enclose a wire ring.
Patent GB-267633-A (GB)
Title: Improved manufacture of writing inks
IPC: C09D11/16
Filed: 1925-12-23
Abstract: 267,633. Bloxam, A. G., (I. G. Farbenindustrie Akt.-Ges.). Dec. 23, 1925. Ink.-Stable writing inks, which yield writing which becomes fast to water at ordinary temperature, are made by adding an alkali or formaldehyde. or agent which yields formaldehyde, or both an alkali and formaldehyde or agent yielding formaldehyde, to a solution of a substantive dyestuff. In examples, (1) the solution of the sodium salt of a tetrakisazo dye-stuff made from an aminonaphtholsulphonic acid. e.g. k-acid (1 mol.), a p-diamine, e.g. p-phenylenediamine (2 mols.) and an m-diamine, e.g. m-phenylenediamine (2 mols), is mixed with (a) caustic soda, (b) caustic soda and formaldehyde, (c) formaldehyde, and (d) caustic soda and hexamethylenetetramine; (2) caustic soda is added to a solution of a mixture of the tetrakisazo dyestuff from diaminodiphenylamine (1 mol.), an aminonaphtholsulphonic acid, e.g. H-acid (2 mols.), and a mdiamine, e.g. m-phenylenediamine (2 mols.), with the disazo dyestuff p-phenylenediamine sulphonic acid # a-naphthylamine # aminonaphtholsulphonic acid, e.g. 2: 8 : 6-acid and alkali blue; and (3) a solution of the disazo dyestuff pdiamine, e.g. p-phenylenediamine # aminophenolether, e.g. o-anisidine # aminonaphtholsulphonic acid, e.g. H-acid, is mixed with formaldehyde solution.
Patent GB-429099-A (GB)
Title: Improvements in carburettors for internal combustion engines
IPC: F02M7/17
Filed: 1933-11-21
Abstract: 429,099. Spray carburetters. AXE, E. C., 27, Chancery Lane, London.-(Soc. Auxiliaire pour le Developpement d'Industries Mecaniques (S.A.D.I.M.) ; 22, Corraterie, Geneva, Switzerland) Nov. 21, 1933, No. 32475. [A Specification was laid open to inspection under Sect. 91 of the Acts, May 22, 1934.] [Class 7 (iii)] A normally closed float chamber 1 supplies fuel through a conduit 6, jet 2, annular chamber 7 and aperture 8 to the throat of a Venturi tube, the lower end of which is controlled by a suction-actuated valve 12. The upper end of the tube connunicates through apertures 11 and conduit 9 with the top of the float chamber so as normally to maintain a suction sufficient to raise fuel thereto. At starting, however, when the suction tends to become excessive, a spring-loaded valve 56 is opened and air admitted to increase the pressure and the fuel supply to the jet. The air control valve 12 is actuated by suction transmitted to a spring-loaded piston 16 through a tube 19, the movement of the piston being braked by air inlet devices 21, 22. Air enters the carburetter through a number of inlets 4 adapted to be covered at starting by a strangler 76. During slow-running, air enters through a calibrated inlet 44 to form an emulsion when the throttle is nearly closed. As the throttle is opened, an air current through ducts 10, 47, 46, 45 tends to become stronger, but the air entering through inlet 44 counteracts the tendency of said current to increase. The inlet 44 is so calibrated, that when the opening of throttle 5 is a maximum, the current becomes nil. In a modification, Figs. 2, 3, the automatic corrector 44-47 of Fig. 1, is replaced by one actuated by the accelerator pedal. A tube 49 slidable within a conduit 50 and pierced with holes 51, is adapted to be actuated by the accelerator lever 53 to introduce a variable amount of air into a conduit 54 leading to the annular chamber 7 around the throat of the choke tube. The valve 56, Fig. 1, is replaced by a manual control, Figs. 2, 3, wherein a calibrated rod 60 sliding in a conduit 61 has a valve 62 co-operating with a seat 63, the valve being attached to a slide 67 and actuated by a cable 68. At starting the cable is pulled to open valve 62 and allow air entering at 66 to pass to the float chamber by way of ducts 69, 70. The slide 67, Fig. 3, actuates a lever 71 which, through a screw 72 in an extension, acts upon an extension 73 of accelerator lever 53 so as to open the throttle slightly during starting. In a further modification, the air is admitted to an expansion chamber below the choke tube through a coaxial conical inlet.
Patent GB-677281-A (GB)
Title: Improvements in or relating to pencils and method of producing same
IPC: B43K19/16
Filed: 1949-12-19
Abstract: <PICT:0677281/III/1> A pencil lead is coated before grease impregnation over part of its surface by a substantially grease impervious film that is compatible with the adhesive by which the lead is later bonded to its sheath, thus affording anchorage for the adhesive bonding of the lead with its sheath of wood or the like. Unimpregnated leads 17 are fed from a hopper 20 by a feed roller 21 to a space between a film applying roller 16 and a spring-pressed backing roller 18. The surface of the printing roller 16 may be plain, so that a film is applied which leaves only the ends of the lead exposed for admission of grease.  The liquid 11 is fed from a tank 10 by a pick-up roller 12 engaged by a doctor roller which removes excess liquid.  The roller 12 is engaged by a transfer roller 15 in engagement with the printing roller 16.  After passage between the rollers 16 and 18 the leads drop into a box 23.  The liquid used for forming the film may be the same form of glue as is used for bonding the lead to the sheath, such as fish glue, glue made of polyvinyl emulsion, or adhesives of the water emulsion, water solution or solvent type.  In the use of water emulsion or water solution types of adhesive a proportion of glue retardant is preferably included in the adhesive.
Patent GB-955961-A (GB)
Title: Benzimidazole derivatives
Inventor: DEPOORTER HENRI
IPC: G03C1/12
Filed: 1959-09-24
Abstract: The invention comprises benzimidazole derivatives of the general formula: <FORM:0955961/C2/1> in which R1 is a lower alkyl group or an acyloxy-alkylene group, R2 is a methyl group and R3, R4 and R5 each represents a hydrogen atom, a chlorine atom, a bromine atom, a fluorine atom, a carbalkoxy group, a cyano group, an amino group, a nitro group or a phenyl group, at least one of the radicals R3, R4 and R5 representing a fluorine atom, a carbalkoxy group, a cyano group or a phenyl group.  The compounds may be made by reducing and cyclising o-nitroaniline or o-nitroacetanilide derivatives carrying the above specified substituents. The reduction of the nitro group is carried out, e.g. by treatment with hydrogen under pressure in the presence of Raney nickel. The cyclisation of the amino compound produced may be effected by treatment with acetic acid.  The reduction and cyclisation may be carried out in one step by using a reducing agent such as stannous chloride or metallic zinc in the presence of hydrochloric acid and acetic acid. Alternatively, the benzimidazole derivatives containing a fluoro-, a chloro- or a cyano-substituent may be made by diazotizing the corresponding benzimidazole compounds and treating them by known methods to convert the diazonium compound to the corresponding fluoro-, chloro, or cyano benzimidazoles. Examples are given of the preparation of (a) 1-ethyl -2- methyl -5- phenyl benzimidazole; (b) 1-ethyl -2-methyl -5- fluoro benzimidazole; (c) 1-ethyl -2- methyl- -5- chloro -6- fluoro benzimidazole; (d) 1-ethyl -2- methyl -5- fluoro-6- nitro benzimidazole; (e) 1-ethyl -2- methyl -5-fluoro -6- amino benzimidazole; (f) 1-ethyl 1-2-methyl -5- fluoro -6- chloro benzimidazole; (g) 1-ethyl -2- methyl -5- cyano benzimidazole; (h) 1-ethyl -2- methyl -5- chloro -6- cyano benzimidazole; (j) 1-ethyl -2- methyl -5- fluoro -6-cyano benzimidazole; (k) 1-ethyl -2- methyl -6-cyano benzimidazole; (l) 1-ethyl -2- methyl -7-cyano benzimidazole; (m) 1-(b -acetoxyethyl)-2-methyl -5- cyano benzimidazole; and (n) 1-ethyl -2- methyl -7- carbethoxy benzimidazole.  Specification 955,962 is referred to.
Patent GB-682880-A (GB)
Title: Improvements in or relating to lock nuts
IPC: F16B39/34
Filed: 1949-12-19
Abstract: 682,880. Locking nuts. JENKINS, R. G. C (Fraser, M. W.). Dec. 15, 1950 [Dec. 19, 1949], No. 32543/49. Class 89 (i) Nuts are locked and at the same time provided with a fluid tight seal by means of a plastic insert 15 non-rotatably mounted in a counterbore formed on the seating face. The insert projects slightly beyond this face, is prevented from rotation by peripheral serrations, and is retained in position by staking down at a number of points 19. In a modification the insert is polygonel for insertion in a similar recess in an enlarged part of the nut. Numerous examples of suitable plastics are given.
Patent GB-804332-A (GB)
Title: Improvements in or relating to hair brushes, clothes brushes and the like
IPC: A46B7/04
Filed: 1955-11-15
Abstract: 804,332. Brushes. WHYTE, G. T., and GASC, P. H. Oct. 9, 1956 [Nov. 15, 1955], No. 32621/55. Class 19. To one side of the elongated stock of a clothes or hair brush is secured an outwardly arched body from which bristles project and in a longitudinally extending channel in the other side of the stock is secured a resilient pad. Specification 804,331 is referred to.
Patent GB-880231-A (GB)
Title: Steroid process
IPC: C07J5/00
Filed: 1959-09-25
Abstract: 1,2,6,7-tetrahydro-6b -fluoro-3-keto-D 4-steroids of the pregnane, androstane, cholestane and spirostane series are prepared by reacting 3-enol ethers or esters of the 6-unsubstituted steroids with at least an equimolar amount of perchloryl fluoride in an inert organic solvent and in the precence of at least an equimolar amount of a nucleophilic catalyst.  Preferred catalysts are water, lower alkanols, hydrocarbon tertiary amines and alkali metal salts of lower alkanoic acids.  Examples describe the preparation of many 6b -fluoro steroids, some of which contain, in addition to the usual substituents in the 3-, 11-, 17-, 20- or 21-positions the following substituents-16a ,17a -oxido, 9a -halo, 16a -halo, 16a -methyl, 16a -hydroxy, 2a -methyl, 17b -pyruvoyl, 21-methyl and 21-halo.  19-Nor, D 9(11) and D 17(20) steroids are also prepared, and steroids containing hydroxy, acyloxy, keto, methyl, epoxy, acetal and ketal groups, halogen atoms and double bond at a variety of positions in the steroid nucleus also are referred to.  Epimerization of some of the products to the corresponding 6a -fluoro steroids is also described.  Specifications 769,998 and 770,000 are referred to.
Patent GB-849651-A (GB)
Title: Plutonium compounds
IPC: C07C45/77
Filed: 1945-12-04
Abstract: 849,651. Plutonium compounds. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Dec. 4, 1945 [Nov. 30, 1944], No. 32819/45. Class 39(4). Chelate compounds of plutonium are prepared by mixing an acid solution of trivalent, tetravalent, or hexavalent plutonium with a diketone in the presence of sufficient alkali to render the resulting mixture alkaline. Beta-diketones are especially suitable, for example, dibenzoyl methane, 2, 2, 6, 6-tetramethyl-3, 5-heptadione, 3, 5-heptadione, 4, 6-nonanedione, propionyl acetone, n-hexoyl acetone, ethoxy acetylacetone, acetylacetone, and benzcylacetone. The plutonium solution may be prepared by treating a plutonium nitrate solution with ammonium hydroxide and dissolving the precipitated plutonium hydroxide in sulphuric acid. In obtaining plutonium from a solution of irradiated uranyl nitrate, the solution is reduced with ferrous ion, uranous ion, or hydroxylamine hydrochloride and then treated with an adsorbent for plutonium, e.g. columbic oxide, silica gel, phenol sulphuric acid-formaldehyde resin, or precipitated bismuth phosphate or lenghanum fluoride; the adsorbent is then extracted with nitric acid and the solution treated according to the invention, the precipitate being separated or extracted with a solvent, e.g. chloroform, benzene, ethyl acetate, carbon tetrachloride, anilin, n-hexyl alcohol, xylene, or ethyl ether. In Example 1 a plutonium solution is shaken with three portions of a mixture of benzoylacetone and chloroform, the organic extracts being evaporated to obtain the complex. In Example 2 the plutonium solution is mixed with a solution of acetylacetone in ammonium hydroxide and the precipitate is separated, washed, and dried over phosphorus pentoxide.
Patent GB-1482661-A (GB)
Title: Method of manufacturing an insulated conduit
IPC: B29C48/09
Filed: 1974-07-25
Abstract: 1482661 Insulated pipes RAKENNUSMUOVI OY 25 July 1974 32823/74 Heading F2P [Also in Division B5] An insulated conduit comprises one or more tubes 2 surrounded by a foamed plastics insulation 3 extruded simultaneously with an outer plastics sheath 4 (see Divisions B4-B5). A single tube, Fig. 3 (not shown) may be provided with the insulation and with the sheath which are extruded from annular orifices or the insulated conduit may comprise the Fig. 4 or Fig. 5 section, comprising a plurality of tubes 2 within the same sheath 4. The tube or tubes 2 may be of metal, or cardboard, or of extruded plastics.
Patent GB-485944-A (GB)
Title: Improvements in or relating to pressure fed lubricating systems
IPC: F16N29/04
Filed: 1936-11-30
Abstract: 485,944. Lubricating. PAUL, D. W. F. D., REES, C. L., and LUSH, G. R. W. Nov. 30, 1936, No. 32849. [Class 12 (iii)] [Also in Group XXXVII] In a pressure lubricated engine the operator is warned of an impending oil shortage, oroffailure of the lubricant pressure, by a switch responsive to the lubricant pressure, and a further warning is also given when the quantity of oil in the oil reservoir reaches the safe minimum level. As shown, a pressure responsive switch 1 is included in the ignition circuit 12 of an automobile and is connected by a pipe 14 to the engine oil pump 15. The latter has two inlets 16, 17, at different levels in the oil sump 19. When the sump 19 is fully charged the inlet 16 is open and the inlet 17 closed. After a period of use the oil level falls below the level of 16. The oil pressure consequently falls and the switch 1 breaks the electric circuit thus stopping the engine. This gives the driver a warning of impending oil shortage. He then operates a lever 21 to shut the inlet 16 and open the inlet 17 and restarts the engine. When the oil level falls below the inlet 17 the switch 1 again operates to stop the engine, and the oil sump must now be replenished with oil. As shown, a lever 25 connected to the lever 21 overhangs the filler cap 23 to ensure that upon refilling the oil sump 19 the inlet 16 is opened and the inlet 17 shut. A suitable switch is shown in Fig. 2 in which the oil pressure acts on a diaphragm 38 connected to a contact member 31 under the action of a spring 34. When the oil pressure overcomes the spring, the member 31 contacts members 30, 32, connected to the electric leads 4, 8. Instead of stopping the engine the switch 1 may operate to give any kind of visual, audible or other signal to the driver. For example, the pressure responsive device may partially or wholly close the throttle, or shut off the petrol as the oil pressure drops. Instead of the arrangement shown, the pump inlet may comprise a telescopic adjustable tube, or it may be carried by a float, or the pump itself may rise and fall with the oil level or be located in a trough having one or more sluice gates opening to the oil sump. Further, the pump may be arranged so that more than two warnings are given to the driver.
Patent GB-1314465-A (GB)
Title: Extrusion moulding machines
IPC: B29C48/38
Filed: 1971-07-13
Abstract: 1314465 Mixing apparatus LAVORAZIONE MATERIE PLASTICHE-LMP SpA 13 July 1971 [24 Sept 1970] 32865/71 Heading B1C [Also in Division B5] Apparatus for extrusion moulding hollow articles has a pair of parallel co-rotating intermeshing screws 12, 14, the screw 14 having a detachable threaded extension 18 in a detachable chamber 16 of circular cross-section to which an extrusion die (not depicted) can be attached. The threads of the extension may have interruptions 30 and both the extension and the chamber 16 may have cooling means. The core diameter of the extension 18 is smallest in the region of the confluence chamber 28.
Patent GB-859346-A (GB)
Title: Improvements in journal bearings
IPC: F16C33/10
Filed: 1958-10-15
Abstract: 859,346. Fluid bearings. CAUBET, J. J. Oct. 15, 1958, No. 32920/58. Class 12 (1). A bearing for a shaft 10 comprises quantities of lubricant located in sealed recesses 25 in a sleeve 23 disposed between the shaft 10 and half-bushes 21, 22. Each recess 25 is sealed by a sealing-ring 26 and is filled with lubricant under pressure through a lubricating-point 27. The sleeve 23 is held in position by studs 24.. The lubricant is preferably a mixture of grease, graphite, and molybdenum bisulphide.
Patent GB-381005-A (GB)
Title: Improvements in or relating to gramophone records
Filed: 1931-11-30
Abstract: 381,005. Gramophone records. STERNBERG, W. D., Mondesfield, Exeter Road, Kilburn, London. Nov. 30, 1931, No. 33066. [Class 40 (ii).] A sound record disc is provided with stroboscopic markings on the label or other part to facilitate the determination of its correct speed. These markings in the form of radiating light and dark lines are seen during rotation of the turntable by means of light from a lamp supplied with alternating current at a frequency related to the markings so that these appear stationary when the record is rotated at the correct speed, but appear to rotate in one direction or the other if the speed is greater or less. Additional sets of markings are provided if the record is required to rotate at different speeds.
Patent GB-839114-A (GB)
Title: Improvements in carburettors operating by injection of fuel into the induction pipe of an engine
Inventor: MENNESSON ANDRE LOUIS
IPC: F02D9/00
Filed: 1958-10-16
Abstract: 839,114. Spray carburetters. SOC. INDUSTRIELLE DE BREVETS DE D'ETUDES S. I. B. E. Oct. 16, 1958 [Dec. 21, 1957], No. 33069/58. Class 7(3) A fuel injection device comprises an injection nozzle 35 injecting fuel into the inlet manifold 31 of an I.C. engine, the fuel passing through a further orifice 38 terminating a chamber 36 open to atmosphere. Additional air is supplied by a pump 40 via chamber 47 to assist in atomizing the fuel. As shown the pump is of the spring return diaphragm type operated by a push rod 41 and air is drawn from the inlet manifold, thus the pump is inoperative whenever the depression in the manifold overcomes the spring tension in the pump. The fuel, which is metered at 29 in acordance with engine requirements, is delivered by a diaphragm pump 20 at low speeds and a centrifugal pump 1 at higher speeds into a common line 25.