baber/WOPTO huggingface dataset:
Patent GB-1474119-A (GB)
Title: Reduction catalyst for removal of nitrogen oxides in exhaust gas
IPC: B01J21/16
Filed: 1974-09-11
Abstract: 1474119 Catalyst for reducing nitrogen oxides KOGYO KK 11 Sept 1974 39683/74 Heading B1E [Also in Division Cl] A catalyst for reduction of nitrogen oxides in exhaust gases comprises at least one metal or compound of a metal selected from Cr, Mn and metals of Gps. Ib (e.g. Cu, Ag, Au), IIb (e.g. Zn, Hg, Cd) and VIII (e.g. Fe, Ni, Co, Pd) supported by a carrier comprising a naturally-occuring inorganic tuff, the tuff being formed principally of SiO 2 , Al 2 O 3  and H 2 O and containing a combined total of 1 to 10% wt of alkali metal oxide and alkaline earth metal oxide. The carrier may be treated with an ammonium-cation-containing solution before application of the metal or metal compound.
Patent GB-863478-A (GB)
Title: Improvements in or relating to balancing of cardan shafts
IPC: F16F15/32
Filed: 1958-12-10
Abstract: 863,478. Balancing cardon shafts. GELENKWELLENBAU G.m.b.H. Dec. 10, 1958 [Feb. 22, 1958], No. 39791/58. Drawings to Specification. Addition to 815,356. Class 80 (2). A cardon shaft is balanced by spraying on metal grains as described in the parent Specification at the point(s) diametrically opposite the point(s) of unbalance.
Patent GB-1438368-A (GB)
Title: Internalcombustion engine
IPC: F02M31/00
Filed: 1973-08-22
Abstract: 1438368 Treating charge MASCHINENFABRIK AUGSBERG-NURNBERG AG 22 Aug 1973 [26 Aug 1972] 39877/73 Heading F1B In a method of operating an I.C. engine air at low temperature and liquefied fuel gas are supplied so that, prior to combustion, heat is transferred from the combustion air to the liquefied fuel gas thereby to cool air below ambient temperature and to pre-heat or evaporate the liquefied fuel gas.
Patent GB-924040-A (GB)
Title: Ethylene oxide
Filed: 1961-11-08
Abstract: Ethylene oxide is produced by the silver catalysed oxidation of ethylene with molecular oxygen, in the presence of an inhibitor in the vapour state comprising a chlorinated organic hydroxy compound having a boiling point higher than that of water and miscible with water in all proportions.  The process may be effected at atmospheric pressure with an inhibitor boiling at over 100 DEG C., b -chloroethanol being the preferred inhibitor in concentrations between preferably 0.1 to 10 mg per normal cubic metre of entering gas or preferably in the limits of 0.5 to 1 mg.  Propylene chlorohydrin, epichlorohydrin and chlorinated alcohols are named as other suitable inhibitors.  In the preferred embodiment a mixed silver/alkali metal carbonate catalyst supported on silicon carbide spheres prepared according to U.S.A.  Specification 2,825,701 is employed at 9 to 15 or up to 20 ats. pressure, 200-300 DEG C., preferably 255 DEG C.  In the absence of the vapour phase inhibitor 14% conversion with a 63% yield of ethylene oxide referred to ethylene is obtained per pass, in the presence of 0.5 to 1 mg per cu. metre of entering gas, 20.5% conversion with 75% yield result.  The ethylene oxide may be removed by absorption in water and recovery from the solution by the usual methods and the gas stream may be recycled.  Addition of the inhibitor to the entering gas may be effected batchwise or continuously either neat or as an aqueous dilution.
Patent GB-1521119-A (GB)
Title: Telephone exchange systems
IPC: H04Q3/62
Filed: 1975-10-01
Abstract: 1521119 Inter-exchange signalling SIEMENS AG 1 Oct 1975 [22 Oct 1974] 40108/75 Heading H4K In an automatic exchange system in which a connection may be made between two subscriber stations, e.g. N1 and Um, via an inter-exchange line AL, one station (N1) may switch the other (Um) from its speech-receiving to its data-receiving state by transmitting a characteristic signal followed by a code number. The signal, e.g. depression of an earth button, places the connection in a "hold" state, i.e. the inter-exchange line remains looped while station N1 is connected to central control ZE via a line unit AUe. Reception by ZE of the code number causes a loop interruption of a specified duration by virtue of timer-controlled switches which are located in both AUe and ZE. This loop break is recognized by the distant station Um as a request for Um to change over to data reception. The change back of Um from the data-receiving to the speech-receiving state may be effected by the same series of operations. Alternatively the datareceiving state may time out, an audible signal being transmitted to N1 prior to this happening.
Patent GB-1400532-A (GB)
Title: Magnetic mass spectrometer
IPC: H01J49/30
Filed: 1972-09-01
Abstract: 1400532 Particle spectrometers E I DU PONT DE NEMOURS & CO 1 Sept 1972 40658/72 Heading H1D In a scanning mass spectrometer using a magnetic analyser the analyser pole-pieces are so shaped that they magnetize substantially uniformly and the flux distribution remains constant at all field strengths. It is stated that ideally the pole faces should have an exponential configuration in both the longitudinal and transverse directions. An approximation to this curvature can be used as shown in transverse section in Fig. 4, where the sides of the polepieces are flat and inclined at 11¢ degrees to the perpendicular to the pole faces to which they are connected by a circular curved portion of radius 1À25 times the gap spacing a. The longitudinal section, Fig. 5 (not shown) is generally similar. Shunts of magnetic material can be arranged adjacent the sides and ends of the gap to reduce fringing fields.
Patent GB-921130-A (GB)
Title: Improvements in dust-bins and like receptacles
Inventor: LEOPOLD JEAN HUGHES
IPC: B65D25/24
Filed: 1960-11-29
Abstract: 921,130. Portable receptacles. LEOPOLD & CIE S.A. Nov. 29, 1960, No. 40931/60. Class 66. [Also in Group I]. A dust bin or like receptacle comprises a hollow metallic body 1 closed at one end and having a base member 10 formed from soundreducing material secured thereto which has an integral dependent hollow cylindrical flange 14 to rest on the ground. The body includes an extension 3 accommodated in a slot 16 in the flange 14, and the base member 10 is secured to it by rivets 18 passing through the flange 14 and extension 3. Ribs 20 extend from the flange 14 to an exterior ring 15 thereon, on each side of a rivet 18. The lid 21 is also made of a sound-reducing material.
Patent GB-1067676-A (GB)
Title: Improvements in or relating to electrical interrogation circuits for use with means capable of receiving a substantial electrical charge
Inventor: BELL ALAN
IPC: G08B17/06
Filed: 1962-10-31
Abstract: 1,067,676. Temperature alarm systems. GRAVINER MANUFACTURING CO. Ltd., and WILKINSON SWORD Ltd. Jan. 30, 1964 [Oct. 31, 1962], No. 41115/62. Heading G4N. In a temperature-sensitive system of the type described in Specification 953,166, an additional capacitor C 2 , normally short-circuited by contacts A 1 , is connected in series with the temperature detector 11 so as to ensure that the SCR remains conductive even if the temperature detector 11 is exposed to very high temperatures. As described, the temperature detector 11 is charged on negative half-cycles via diode D 1  and discharged on positive halfcycles via resistors R 2 , R 3 . When the temperature detector 11 is at a high temperature, the discharge current is sufficient to trigger the SCR, energizing relay A. The triggering temperature may be predetermined by the use of an appropriate resistor connected across C 1 . A bias voltage for relay A may be provided as described in Specification 953,166. When contacts A 1  are open, capacitor C 2  ensures that SCR remains conductive despite possible reduction in the resistance of temperature detector 11 at very high temperatures. Capacitor C 1  prevents spurious operation due to water collecting in temperature detector 11 and forming a secondary cell.
Patent GB-1282110-A (GB)
Title: Improvements in and relating to dog clutch-brake units
Inventor: RATTENBERG VADIM NIKOLAEVICH
IPC: F16D67/04
Filed: 1969-08-19
Abstract: 1282110 Clutch-brake combinations SPETSIALNOE KONSTRUKTORSKOE BJURO TYAZHELYKH TSVETNYKH METALLOV PRI GINTSVETMETE and BALKHASHSKY ORDENA LENINA GORNO-METALLURGICHESKY KOMBINAT IMENI 19 Aug 1969 41343/69 Heading F2L In a clutch-brake unit for a hoist wherein a driven clutch-brake sleeve 3 is axially slidable into tooth engagement with a brake member 2 or clutch member 1, the clutch member 1 is axially slidable on a driving shaft 6 and urged by a spring 10 towards the sleeve 3 to provide an axial distance between the clutch and brake members 1, 2 which is less than the length of the sleeve 3 and thus prevents the driven clutchbrake sleeve 3 from disengaging both the clutch and brake members 1, 2 and the load falling under its own weight. The ends of the teeth of the clutch member 1 are bevelled to permit the clutch member to ratchet over the teeth on the sleeve 3 whilst the sleeve also engages the brake member 2. The sleeve 3 is moved axially by an hydraulic servo 5. During leftward axial movement of the sleeve 3 from the brake engaged position the teeth on the sleeve 3 engage the clutch member 1 before the brake teeth are disengaged whereupon the clutch member 1 ratchets over the teeth on the sleeve 3 until the brake teeth are fully disengaged whereafter the clutch member 1 drives the sleeve 3.
Patent GB-1487621-A (GB)
Title: Preparing shaped bodies of a metal ferrite or ferrites
IPC: C04B35/645
Filed: 1974-09-24
Abstract: 1487621 Ferrite bodies SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 24 Sept 1974 41506/74 Headings ClJ and ClA A shaped body of a metal ferrite or ferrites of the formula Mo.nFe 2 O 3  wherein M is one or more of Ba, Sr and Pb and n has a value of from 3 to 6À5, having a crystallite orientation of at least 90%, a density of at least 95% of the theoretical maximum density and a crystallite size such that the average crystallite diameter is less than 3 microns, is prepared by (1) forming a mixture of (a) intimate agglomerates of (i) less than 0À1 micron grains of one or more of barium oxide, strontium oxide and lead oxide and (ii) less than 0À1 micron grains of ferric oxide, the molar ratio of ferric oxide to divalent metal oxide being 3 : 1 to 6À5 : 1 and (b) from 0À1 to 0À6 wt. per cent based on the metal oxides of a crystallite growth promoter, (2) heating the mixture at 500‹ to 900‹ C. for not more than 24 hours to form crystallites of divalent metal ferrite of a size such that the average crystallite diameter is less than 0À5 microns, and (3) hot pressing the crystallites at 600‹ to 1100‹ C. and at 1000 to 30,000 p.s.i. to form the required shaped body. The crystallite growth promoter may be a fluoride of Group IA and IIA metals. In step (1), intimate agglomerates (a) may be formed by coprecipitating a mixture of thermally decomposable compounds of the metals and then thermally decomposing the precipitate or spray drying or spray roasting a solution of a mixture of salts.
Patent GB-1322801-A (GB)
Title: Vane assembly
IPC: F01D9/02
Filed: 1970-08-28
Abstract: 1322801 Gas turbine blades GENERAL ELECRIC CO 28 Aug 1970 [1 Dec 1969] 41563/70 Heading FIT A hollow air cooled gas turbine stator blade has a partition 25 extending between the sidewalls to strengthen the blade and divide it into leading and trailing edge chambers 26, 28 containing respectively hollow inserts 30, 32. Chamber 28 also contains spaced chordwise extending strengthening ribs 58 projecting from the blade sidewalls to the insert 32 and being inter-connected downstream of the latter at 60. Pin-like ribs 62 are also provided. Compressed cooling air is delivered to chambers 77, 79 adjacent the inner and outer blade platforms 12, 14 respectively. Air from chamber 77 flows through holes 80 in a baffle 40, some entering insert 30 and the remainder flowing through passages 54 in platform 12 to cool the platforms 78 of rotor blades 66. Air from chamber 79 also flows through a baffle 42, some entering inserts 30, 32 and the remainder flowing through passages 52 to cool the fixed shroud member 70 surrounding rotor blades 66. The passages 52, 54 are inclined at substantially the same angle to the axial direction 57 as the working gas leaving the blade so that cooling air leaving the passages causes minimum disturbance of the main flow. Air leaves inserts 30, 32 through holes 36 in the walls thereof and impinges upon the blade walls before exhausting through holes 18, 64, 66 in the latter into the working gas stream. In a modification Fig. 4 (not shown), a filter (90) is mounted outwardly of baffle 42 to trap particles in the cooling air which might clog the cooling holes.
Patent GB-960858-A (GB)
Title: Improvements relating to watthour meters
Inventor: RYDER CLIFFORD
IPC: G01R21/08
Filed: 1961-11-21
Abstract: 960,858. Electric power measurement; electric energy meters. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Nov. 15,1962 [NOV. 21,1961], No. 41631/61. Headings G1Q and G1U. A watthourmeter comprises a Hall plate 1 whose opposed edge terminals 4, 5 are coupled directly or through a voltage transformer to an alternating voltage supply 12, 13 and which is subjected to the field of a coil 6 energised directly or through a current transformer by the current from the supply to a load 11; the output from opposed edge terminals 2, 3 being applied to an integrating circuit 7 comprising e.g. a capacitor repeatedly charged to a critical voltage and discharged td generate pulses which operate a watthour counter 9 representing VI cos # where # is the phase angle. A phase shifter may be introduced into either Hall plate excitation circuit to make the indication represent reactive power VI sin #. Alternatively the supply voltage may excite coil 6 and the drop across a series resistance in the load circuit or the output of a current transformer may excite terminals 4, 5. The device may operate on D.C.
Patent GB-1458466-A (GB)
Title: Preservative and disinfectant
IPC: A01N47/48
Filed: 1974-09-25
Abstract: 1458466 Disinfectant composition SCHULKE & MAYR GmbH 25 Sept 1974 [16 Oct 1973] 41714/74 Heading A5E A preservative and disinfecting agent is obtained by the reaction of (a) a haloacetamide and/or thiocyano-acetamide, (b) one or more straight chain, branched chain, saturated or unsaturated alkanols containing 1-14 carbon atoms, cycloalkanols, aralkanols with 1-4 carbon atoms in the ankanol radical. monoethers of dialcohols with 1-8 carbon atoms, and substituted alkanols, in which the substituents are halogen atoms or nitro groups, with 1-14 carbon atoms and (c) formaldehyde and/or paraformaldehyde. It is preferred to react the components in a molar ratio of 1:2:3 respectively in an aqueous solution.
Patent GB-934661-A (GB)
Title: Improvements in and relating to cathode ray tubes
IPC: H01J29/62
Filed: 1959-12-08
Abstract: 934,661. Cathode-ray tubes. PHILCO CORPORATION. Dec. 8, 1959 [Dec. 8, 1958], No. 41766/59. Class 39 (1). In a cathode-ray tube particularly of the type described in Specification 862,878, in which the electrostatic lens structure 16 is partially within the deflection yoke the second grid 22 which is cup-shaped, facing away from the cathode, and/or the first element 24 of the lens structure is/are formed at least in part of high permeability magnetic material of low residual magnetism and/or low coercive force in order to shield the beam from the fringing field of the deflection yoke. The magnetic material may be a stainless steel and magnetic material may be applied as a coating or overlay on non-magnetic material. The electrostatic lens structure 16 comprises a unipotential lens of which the outer elements 24, 28 are cupshaped. C-shaped beam centering magnets 46, 48 are provided. Specifications 898,460 and 898,461 are referred to.
Patent GB-1058640-A (GB)
Title: Improvements relating to cooking vessels
Inventor: HANSON CEDRIC CHARLES
IPC: A47J36/02
Filed: 1963-10-23
Abstract: 1,058,640. Coated cooking vessels. CHROMEALLOYING CO. Ltd. Oct. 23, 1964 [Oct. 23, 1963], No. 41858/63. Heading B2K. [Also in Division A4]. In a cast iron or mild steel cooking vessel, such as a frypan, saucepan or baking tin, the surface of the iron i.e. is chromium enriched by a chromium diffusion process and a non- stick coating of P.T.F.E. is applied to the chromium-enriched surface.
Patent GB-1200193-A (GB)
Title: Improvements in or relating to vehicle braking apparatus
Inventor: FARMERY GEORGE KENNETH
IPC: B60T17/10
Filed: 1967-09-14
Abstract: 1,200,193. Fluid-pressure brakes; indicating devices. CLAYTON DEWANDRE CO. Ltd. 4 Sept., 1968 [14 Sept., 1967], No. 41922/67. Headings F2F and F2E. In a fluid pressure operated braking apparatus for motor vehicles a lock actuator 10-13 inclusive is associated with a brake chamber and a switch mechanism 17 is provided to be operable upon movement of the actuator to operate a visible or audible signal and alarm. The lock actuator includes a displaceable piston member 13 which is responsive to fluid pressure supply via a port 16 and is operable to move the locking means to its inoperative position such that the switch 17 is opened when the piston member 13 is moved to the right to release the locking mechanism and is closed when the fluid pressure supply fails such that the locking mechanism is applied to retain the piston-rod 3 in its applied position, the switch means being made under these conditions to actuate the signal and alarm means. The switch member includes an operating plunger 20 which is urged into engagement with a wall of a recess portion 21 of the piston member 13 so that a contact strip 19 is moved into spring- loaded engagement with a pair of spaced contacts 18. The brake actuator consists of a triple diaphragm compressed-air actuated service diaphragm 1, an emergency diaphragm 5 and an intermediate diaphragm 7. The space between diaphragms 5 and 7 is permanently connected to atmosphere via port Sa whereby in the event of loss of pressure in one circuit, through failure of the diaphragm 1 or 5, the other diaphragm and associated circuit will remain operative.
Patent GB-1467994-A (GB)
Title: Silver halide colour photographic light-sensitive emulsions
IPC: C07D231/52
Filed: 1974-09-26
Abstract: 1467994 Pyrazolone derivatives and intermediates therefor FUJI PHOTO FILM CO Ltd 26 Sept 1974 [27 Sept 1973] 41987/74 Heading C2C [Also in Division G2] 3 - (2,4 - Dichloroanilino) - 3 - ethoxyacrylate is prepared by heating at 120-140‹C. for 2 hours under nitrogen ethyl 3,3-diethoxyacrylate and 2,4-dichloroaniline and distilling under reduced pressure. 1-(2,6-Dichloro-4-methoxycarbonylphenyl) - 3 - (2,4 - dichloroanilino) - 5- pyrazolone is prepared by refluxing the above acrylate with 2,6-dichloro-4-methoxycarbonylphenylhydrazine and acetic acid, or from 1-(2,6- dichloro - 4 - methoxycarbonylphenyl) - 3- ethoxy - 5 - pyrazoline and 2,4 - dichloroaniline by heating to 140‹ C. and adding, methanesulphonic acid. 2,6-Dichloro-4-methoxycarbonylphenylhydrazine is prepared from 2,6-dichloroaniline and sodium nitrite-stannous chloride. 1 - (2,6 - Dichloro - 4 - methoxycarbonylphenyl)- 3 - ethoxy - 5 - pyrazolone is prepared by stirring ethyl #-ethoxy-#-iminopropionate hyhydrochloride and 2,6 - dichloro - 4 - methoxycarbonyl phenylhydrazine in methanol, adding metallic sodium in methanol dropwise, adding acetic acid and pouring into water. 1-(2,6- Dichloro - 4 - n - tetradecyloxycarbonylphenyl) - 3- (2,4 - dichloroanilino) - 5 - pyrazolone is prepared from 1-(2,6-dichloro-4-methoxycarbonylphenyl) - 3 - (2,4 - dichloroanilino) - 5 - pyrazolone and 1-tetradecanol in the presence of butyl titanate. 1-(2,6-Dichloro-4-n-tetradecylcarbonylphenyl) - 3 - benzamido - 5 - pyrazolone is prepared similarly. 1-(2,6-Dichloro-4-methoxycarbonylphenyl) - 3 - amino - 5 - pyrazolone is prepared by stirring ethyl #-ethyl-#-iminopropionate hydrochloride, 2,6-dichloro-4-methoxy - carbonylphenylhydrazine and anhydrous sodium acetate in methanol, adding metallic sodium in methanol dropwise, adding acetic acid and pouring into water. 1-(2,6-Dichloro-4- methoxycarbonylphenyl)- 3 - benzamido - 5- benzoyloxypyrazole is prepared by refluxing the last compound with benzoyl chloride in acetonitrile to which are added triethylamine dropwise. 1-(2,6-Dichloro-4-methoxycarbonylphenyl)- 3 - benzamido - 5 - pyrazoline is prepared by adding triethylamine and water to the last compound in methanol, acidifying with excess acetic acid while cooling and pouring the mixture into water.
Patent GB-1277833-A (GB)
Title: Method and apparatus for printing colour photographs
IPC: G03B27/52
Filed: 1970-09-02
Abstract: 1277833 Colour prints FUJI PHOTO FILM CO Ltd 2 Sept 1970 [3 Sept 1969] 42053/70 Heading G2C A colour print has a coloured border which is made separately. The image-bearing area 10 may be separated from the border 12 by a thin white intermediate band 11, which band may be omitted Fig.3 (not shown). In the method shown in Fig.4, the printing paper 100 has a mask 27 covering the image area from below, and a mask 210 covering the marginal area from above. The image is printed by a light source above the sheet, and the border by a light source 26 below the sheet, a colour filter 24 being interposed as shown. In another arrangement Fig.2 (not shown) the two light sources are on the same side of the sheet, a screen (21) ensuring that the central area and the marginal area each receives light only from its own source. By using a mirror the two light sources may derive from a single lamp.
Patent GB-421628-A (GB)
Abstract: 421,628. Electrolytic condensers. HOWELL ELECTRIC MOTORS CO., Howell, Michigan, U.S.A. June 23, 1933, No. 679 /34. Convention date, June 25, 1932. Divided out of 421,595, [Group XXXV]. [Class 37] An electrical condenser is wound to annular form to permit of free circulation of cooling air around it. In the examples, aluminium electrode strips 3 are separated by strips of cloth 4 impregnated with an electrolyte preferably having the composition :-400 ccm. of glycol, 25À6 oz. of borax, 17À0 oz. of boric acid, 25À6oz. of water. The condenser may be enclosed in an aluminium casing 5 or covered with tape wrapping and dipped in an asphalt base wax. Tho condenser may be mounted in a motor casing 1 as by rubber supports 8 in such a position as to be in the path of air currents created by the rotor. Specification 421,595 is referred to.
Patent GB-1312574-A (GB)
Title: Method and apparatus for electrophotography
IPC: G03G5/00
Filed: 1971-09-14
Abstract: 1312574 Electro-photographic processes KATSURAGAWA DENKI K K 14 Sept 1971 [25 Sept 1970] 42727/71 Heading G2H An electro-photographic process comprises uniformly charging a drum 1 with a corona discharge device 5; imagewise exposing the drum at 6 (together with reverse polarity charging if, as shown, a PIP process is carried out); transferring the resulting electrostatic latent image to a receiver 10; and applying solvent to the drum to remove contaminants, (mainly nitric acid) deposited during corona discharge. The solvent is preferably trichloroethylene, benzene, carbon tetrachloride or methyl alcohol and may be applied by a roller, sponge or brush 9 after image transfer. Roller 9 may continuously or intermittently contact the drum. Preferably the drum comprises a conductive layer 4 a photo-conductive layer 2 an insulating layer 1 and an outer layer (not shown) of polystyrene to protect against the acid.
Patent GB-1554395-A (GB)
Title: Method for producing maytansinol and its derivatives
IPC: A61K35/74
Filed: 1977-10-14
Abstract: Maytansinol, maytanacin and/or maytansinol propionate are prepared by culturing a microorganism belonging to the genus Nocardia, which is able to produce maytansinol, maytanacin and/or maytansinol propionate, with concentration of maytansinol, maytanacin and/or maytansinol propionate, and isolating it from the culture broth. These compounds are useful antitumour agents, i.e. useful cytostatics.