baber/WOPTO huggingface dataset:
Patent GB-387992-A (GB)
Title: Improvements in the combustion of ammonia
IPC: C01B21/26
Filed: 1931-05-08
Abstract: Catalysts for the oxidation of ammonia are made by alloying platinum or an alloy of platinum metals with one or more metals of the 5th and 6th groups of the periodic system.  Examples of the latter are tantalum, tungsten, molybdenum, niobium, chromium, uranium, and vanadium.  They may be added in proportions up to 60 per cent but 1-5 per cent is usually sufficient.  The catalyst should be of large surfaced form such as netting, perforated sheets, pills, chips, wires, or spirals.  Two or more layers of netting &c. of different composition may be used.  According to one example of preparation of an alloy, platinum or an alloy thereof is galvanically coated with blue tungsten oxide in a bath of pertungstic acid.  It is washed, dried, reduced in hydrogen, and heated for several hours at 1000-1100 DEG  C. in a hydrogen atmosphere whereupon the tungsten diffuses into the platinum.  In other examples the alloys are made by fusing the constituents together in a reducing atmosphere.ALSO:Catalysts for ammonia oxidation are made by alloying platinum or an alloy of platinum metals with one or more metals of the 5th p  and 6th groups of the periodic system.  Examples of the latter are tantalum, tungsten, molybdenum, niobium, chromium, uranium, and vanadium.  They may be added in proportions up to 60 per cent but 1-5 per cent is usually sufficient.  According to one example platinum or an alloy thereof is galvanically coated with blue tungsten oxide in a bath of pertungsten acid.  It is washed, dried, reduced in hydrogen, and heated for several hours at 1000-1100 DEG  C. in a hydrogen atmosphere, whereupon the tungsten diffuses into the platinum.  In other examples the alloys are made by fusing the constituents together in a reducing atmosphere.
Patent GB-789303-A (GB)
Title: Improved process for the preparation of nitroso-cyclohexane
Filed: 1955-05-11
Abstract: Nitroso-cyclohexane is made by treating cyclohexylhydroxylamine with an oxidizing agent in a reaction solution of pH not greater than 5.5. The nitroso-cyclohexane is obtained as its more stable bimolecular form, bisnitroso-cyclohexane.  Oxidizing agents specified are ferric chloride, potassium permanganate and potassium bichromate in acidified aqueous solution, hydrogen peroxide and hypochlorous acid when salts of heavy metals such as copper sulphate may be present, or oxygen or air in the presence of catalysts and in organic solvents such as hydrocarbons or chlorinated hydrocarbons.  The organic solutions are such that a pH not greater than 5.5 would be found on addition of water. Catalysts mentioned for use with oxygen or air are salts of iron, cobalt, nickel and manganese which are soluble in the solvent, such as naphthenates.  In examples, nitrosocyclohexane is made by oxidizing cyclohexylhydroxylamine with (1) ferric chloride in water; (2) potassium permanganate in aqueous sulphuric acid; (3) calcium chloride bleach liquor in aqueous sulphuric acid; (4) air in the presence of cobalt naphthenate in chloroform solution; and (5) air in the presence of manganese naphthenate in benzene solution. The nitrosocyclohexane may be isomerized to give cyclohexanone oxime by the action of heat in the presence or absence of solvents. Solvents specified are pyridine and n-butanol.  Further examples illustrate the isomerization (6) in pyridine; and (7) in absence of a solvent.
Patent GB-584393-A (GB)
Title: Improved method for conducting catalytic gas reactions and apparatus therefor
IPC: B01J8/02
Filed: 1944-07-18
Abstract: <PICT:0584393/III/1> In apparatus for catalytic gas reactions the surface of the catalyst 11, Fig. 1, extends in the direction of the gas flow, and the gas is supplied through a plurality of inlets 13 distributed in the direction of the gas flow and so arranged that the gas issuing from them does not come into immediate contact with the catalyst.  The inlet pipe 12 may be parallel with and above the surface of the catalyst, with the orifices 13 either facing the catalyst or turned away from it.  In another embodiment, Fig. 2, the reaction space is annular and the gas is supplied through perforations 13 in the inner tube 16.  The catalyst 15 is a coating applied either to the surface of this tube or to the outer wall 10.
Patent GB-1444321-A (GB)
Title: Web transport apparatus
IPC: G03B21/43
Filed: 1974-03-28
Abstract: 1444321 Sensing webs EASTMAN KODAK CO 28 March 1974 [29 March 1973] 13797/74 Heading B8R A sensing device for detecting web roll diameter and indicating when web 20 is being fed from the roll comprises a roller 28 eccentrically mounted for rotation at one end of a spring biased, pivotable arm 24 the other end of which has a pointer 32 which traverses a scale 39. When a supply reel 10 supporting the roll is rotated by a motor 19 to feed the web, the roller 28 is rotated by virtue of its contact with the roll periphery and imparts oscillatory vibrations to the pointer which also moves across the scale as the roll diameter decreases. At a given diameter, the arm 24 operates a switch 42 connected to a visual or audible alarm.
Patent GB-714113-A (GB)
Title: Improvements in or relating to electric transformers
IPC: H01F29/12
Filed: 1952-05-30
Abstract: 714,113. Transformers. ASKANIAWERKE AKT.-GES. May 30, 1952 [June 20, 1951; April 26, 1952], No. 13831/52. Class 38(2) A variable output transformer of the type having two primary windings P<SP>1</SP>, P<SP>2</SP>, connected in opposite sense and arranged on the centre limb of a magnetic core and having a secondary winding S arranged around the centre limb also and movable therealong so that it is influenced by either one or the other of the two primary windings so that the voltage output of the secondary winding is variable from a maximum value in one sense through zero to a maximum in the opposite sense, is characterized in that the core of the transformer is formed of two symmetrically arranged E-shaped parts each having three integral legs which abut along a line A-A, the secondary winding S in the zero position being symmetrically disposed about this line of abutment. The primary windings may be oppositely connected in series or parallel; in the latter case a variable resistor R is provided to compensate for unbalance between the two windings.
Patent GB-294929-A (GB)
Title: Improvements in and relating to wheeled split trail gun carriages
IPC: F41A23/28
Filed: 1928-05-10
Abstract: 294,929. Schneider et Cie. Aug. 1, 1927, [Convention date]. Field carriages. - Relates to a divided-trail carriage of the type in which the trail beams B are pivoted to a head-plate A supporting the topcarriage D and longitudinally pivoted at A<1> to the wheel axle E. According to the invention, a leaf-spring suspension F rocking on the pivot A<1> has its ends f shackled to wheel-carrying levers G rocking on the ends of the wheel axle. The elastic suspension is rendered inoperative during firing by screw-operated transverse bolts I engaging recesses g in the levers G. The bolts shown are in the form of nuts sliding in arms J keyed to the axle and simultaneously operated by the rotation of a screwed shaft K by a worm gear M.
Patent GB-1132383-A (GB)
Title: Fluid line self sealing coupling
Inventor: PEARSON KENNETH WHITE
IPC: F16L37/32
Filed: 1966-03-29
Abstract: 1,132,383. Pipe couplings. EXACTOR STERLING Ltd. 21 March, 1967 [29 March, 1966], No. 13841/66. Heading F2G. In a coupling which may be automatically released when tension is applied thereto and of the kind comprising tubular members 1, 2 provided with valves 31, 20 biased to a closed position by springs 37, 23, there are means, such as a spring-loaded sleeve 25, operated by fluid pressure for maintaining the valves open after the initial joining of the members has been made and whilst the members are connected together. Fluid under pressure in the member 2 acts against the valve 20 to cause the valve to open valve 31 when the extensions 21, 33 of the valves engage and upon coupling of the members 1, 2 the valve 31 moving until the head thereof engages the end of guide 34 carried by the sleeve 25; further movement is taken up by the sleeve which moves rearwardly against the action of a spring 38, of a strength greater than that of the valve spring 37, and until the balls 5 carried by the member 1 are located and retained by a spring-loaded sleeve 7 in a groove 6 of the member 2. The valve 31 now being open, pressure fluid acts against the head of the valve 20 to open the valve and the sleeve 25 moves forward under the action of the spring 38. The annular face 39 of the sleeve has an area greater than that of the face 41 so that the sleeve is moved to a position wherein the step 42 of the sleeve engages a step 24 of the member 1. The relief of pressure fluid between the seals 27, 29 is provided for by a passage 43.
Patent GB-977225-A (GB)
Title: Improvements in the production of polymers
IPC: C07F9/00
Filed: 1962-04-10
Abstract: Polymers of ethylenically unsaturated monomers are made by effecting the polymerization in the presence of a hydrocarbon solution of a catalyst system consisting of (A) a vanadate ester of the formula: <FORM:0977225/C3/1> wherein R1 is aryl and R2 and R3 are each O-aryl, O-(halo-aryl), O-alkyl containing 1-12 carbon atoms, or halogen, and R1 and R2 may together form a group of the formula, <FORM:0977225/C3/2> where R6 is an arylene or substituted arylene radical, and (B) a metal compound of the formula, <FORM:0977225/C3/3> where M1, M2 and M3 are respectively metals of Group I, II, or III, of the Periodic Table, R4 is hydrogen, aryl, or alkenyl, and R5 is R4, R4O, aryl or alkyl halide, secondary alkyl amino, or secondary aryl amino. Compound (A) may be tricesyl, dicresyl ethyl, trinaphthyl, diphenyl methyl, diphenyl ethyl, diphenyl hexyl, diphenyl dodecyl, tri-(chlorophenyl), di(chlorophenyl) ethyl, naphthyl diphenol, or diphenyl chloro vanadate, or ethoxy vanadyl salicylate. Specified (B) components are aluminium triisobutyl, trimethyl, triethyl, aluminium lithium tetrabutyl, aluminium lithium tetradecyl, aluminium hydride, diisobutyl aluminium hydride, diisobutyl aluminium isoproxide, diisobutyl aluminium butoxide, aluminium isobutyl dichloride and dibromide ethyl di(dimethyl-amino) and di(diphenyl-amino) aluminium, methyl aluminium sesquichloride, aluminium triisoprenyl, lithium butyl, lithium phenyl, sodium naphthalene, zinc diisobutyl, and ethyl magnesium bromide. The solvent for the catalyst system may be hexane, benzene, toluene, cyclohexane, bromobenzene, chlorobenzene, o-dichlorobenzene, terachloroethylene, dichloro-methane, or 1, 1,2,2, tetrachloroethane. The polymers may be purified by washing an alcohol which preferably contains an acid such as hydrochloric, hydrobromic, sulphuric, toluene sulphonic, or phosphoric acid. The ethylenically unsaturated monomer may be propadiene, 1, 2-or 1, 3-butadiene, ethylene, propylene, butene-1 or -2, pentene-1, hexene-1, isobutyl ethylene, acrylonitrile, styrene, methyl acrylate, vinyl chloride, chloroprene, methoxy butadiene, allyl trimethyl xylene, allyl benzene, allyl chloride, cyclohexene, cyclopentene, vinyl cyclohexene, 1, 5 hexadiene, 1, 6 heptadiene, and mixtures such as ethylene and propylene.
Patent GB-419602-A (GB)
Title: Improvements in lighting fittings
IPC: F21V17/06
Filed: 1933-05-12
Abstract: 419,602. Reflectors. CAMPBELL, G., and BENJAMIN ELECTRIC, Ltd., Brantwood Works, Tariff Road, Tottenham, London. May 12, 1933, No. 13850. [Class 75 (ii).] An electric lamp reflector 10 is formed integrally with or has secured thereto a neck in the form of a bridge having leg portions joined by a substantially horizontal portion 19 the centre part of which is apertured to receive an electric lamp holder and is enlarged sufficiently to cause air rising from beneath the reflector to be deflected through the apertures formed between the leg portions, the portion 19 and/or the leg portions being formed on their edges with strengthening and/or heatdeflecting flanges 20, 21. The opening 11 in the reflector may be surrounded by two beads 12, 13 and the bridge 14 may be welded to struck-up flanges 16, the leg portions being cut at 18 to fit the bead 12 and curved at 17 to avoid sharp edges. The reflector is preferably formed from vitreous enamelled metal with its underside white, and a slight amount of light passes upwardly through the ventilation apertures.
Patent GB-579099-A (GB)
Title: Improvements relating to washers
IPC: F16B43/00
Filed: 1944-07-20
Abstract: 579,099. Washers. SUMMERS, R. B. July 20, 1944, No. 13937. [Class 89 (i)] A washer is made in two U-shaped parts 1 each part having a projection 4 that is a friction fit in the throat of the U of the other part. The parts are assembled axially and after tightening of the nut lateral separation is prevented by projections 9 engaging grooves 10. The projections taper to fit the correspondinglyflared throats. The sides of the projections are concave at 7. Recesses 11 are provided for a prizing-tool.
Patent GB-259505-A (GB)
Title: Improvements in and relating to the manufacture of electrical insulators and other moulded articles
IPC: H01B19/02
Filed: 1925-07-08
Abstract: 259,505. Brown, A. H., and Siluminite Insulator Co., Ltd. July 8, 1925. Insulators; insulating-materials. - Electrical insulators and their articles are moulded from cementitious material, such as portland or magnesia cement and, after being allowed to set and harden, are impregnated with one or more incompletely condensed synthetic resins in liquid form, which are first heated to a temperature of 60‹-80‹ C. to allow them to permeate the cement and are then further heated to a temperature of 100‹-130‹ C. to complete the condensation. The impregnating liquid may be prepared as described in Specification 255,516, [Class 2 (iii), Dyes &c.], and filling materials such as asbestos fibre, slate dust, or clay may be added to the cement.
Patent GB-1155701-A (GB)
Title: Improvements in or relating to the Collection of Refuse
Inventor: WALKER DENSMORE
IPC: B65F1/12
Filed: 1965-04-02
Abstract: 1,155,701. Refuse container. D. WALKER. 1 July, 1966 [2 April, 1965], No. 13982/65. Heading A4A. [Also in Divisions B7 and B8] A refuse container comprises a shell 1 and a base 2, which base is movable longitudinally of the container to discharge the same. The shell has a flange 3 at the lower end to prevent the withdrawal of the base through the bottom and means (not shown) whereby the base may be locked in its lower position. The upper face of the base 2 is radiused at the periphery and the base has wheels 4. 1,155,704. Adjustable seats. COX OF WATFORD Ltd. 21 July, 1966 [22 July, 1965], No. 31267/65. Heading A4J. In a vehicle seat supported by separate lateral adjustment assemblies, removable transmission rods (21) interconnect the assemblies and ensure that the same movement is applied to both sides of the seat. Each assembly includes a pair of pivoted levers 25, each of independently adjustable inclination, by the action of eccentrically rotated pins 22, 32. The pins 22, 32 are carried on discs 33 and, at the rear, an additional disc (37) co-operates with pin 39 on a spring detent (41) to lift the end (44) of the detent from a notch in co-axial disc (33), thus permitting pin 22 to move the mid-point of rear lever 25 in a circular arc, with respect to frame member 28, while pin 27 rides in a slot (31) in the end of the lever. Pin 32 rides in a slot in the front lever 25. The inclination of the seat back may be varied about a pivotal mounting. A sliding fore and aft adjustment is provided.
Patent GB-468809-A (GB)
Title: Television transmitter
IPC: H04N5/067
Filed: 1936-05-18
Abstract: 468,809. Television. RADIOAKT.- GES. D. S. LOEWE. May 18, 1936, No. 14021. Convention date, May 18, 1935. [Classes 40 (iii) and 40 (v)] The synchronizing signals in a transmitter of positive films are produced by a margin of increased brilliance and an amplitude filter 27, connected to the output of the photo-electric amplifier 26, passes only the synchronizing signals, which are used to reduce the aerial current to zero irrespective of the amount by which their potential exceeds the threshold value of the filter. The transmitting-valve 16 is modulated at two grids, of which the first 17 modulates by the image signals and the second 20 reduces the current to zero during the synchronizing signals, and the effect of the latter overcomes any effect of the former. According to modifications, the signals passing the amplitude filter are amplified separately and applied to the lead 4, carrying the output from the amplifier 26, and the amplified synchronizing signals so predominate that they always reduce the aerial current to zero, Fig. 1b (not shown) ; the signals passing the amplitude filter are returned to a special controlling-grid in the last valve 14 of the amplifier 26 to produce a peak of emission, which exceeds the image signals and is sufficient to reduce the aerial current to zero.
Patent GB-810642-A (GB)
Title: A process for the preparation of esters of acylphosphorous acids
IPC: C07F9/40
Filed: 1957-05-03
Abstract: Acid esters of acylphosphorous acids are prepared by heating halides of mono- or poly-basic carboxylic acids with saturated dialiphatic or dicycloaliphatic phosphites.  The hydrocarbon residues of the phosphite preferably contain less than 8 carbon atoms and may be substituted, e.g. by halogen.  Specified phosphites include dialkyl phosphites and di-(2-chloroethyl) phosphite.  The carboxylic acid halide is preferably a chloride or bromide and may be derived from an aliphatic, cycloaliphatic or aromatic mono-, di- or polycarboxylic acid, the hydrocarbon residue(s) of which may carry substituents or be interrupted by hetero atoms.  Specified halides include those of lower and higher fatty acids, halocarboxylic acids, e.g. chloracetic acids, ethercarboxylic acids, thioethercarboxylic acids, aminocarboxylic acids, cyclohexane carboxylic acid, benzoic acid, aliphatic and aromatic polycarboxylic acids and tetrachlorophthallic acid. Stoichiometric proportions are preferably used.  Preferred reaction temperatures are 50-150 DEG  C.  An organic solvent may be present, e.g. CCl4 or benzene.  The alkyl halide formed as by-product may be distilled off continuously during the reaction or removed subsequently by vacuum distillation according to its molecular weight.  The products may be converted into their salts, e.g. alkali metal salts, which may be surface-active agents or may be subjected to interesterification, preferably with high molecular weight alcohols or may be converted to the neutral esters.  The products derived from poly carboxylic acids may be reacted with polyhydric alcohols to give acid or neutral polyesters.  In example: (1) lauroyl chloride is heated with diethyl phosphite to give the monoethyl ester of lauroylphosphorous acid which is converted to the sodium salt; (2) to (4) diethyl phosphite is similarly reacted with adipic acid dichloride, benzoyl chloride and capric acid chloride respectively; (5) diethyl phosphite is heated with 2-ethylhexanoic acid chloride to give monoethyl 2-ethylhexanoylphosphite which is interesterified with 2-ethylhexanol to give mono-2-ethylhexyl 2-ethylhexanoylphosphite; (6) lauroyl chloride and dibutyl phosphite are heated in a stream of nitrogen to give monobutyl lauroylphosphite.
Patent GB-560448-A (GB)
Title: Improvements in or relating to water repellants and the treatment of textiles therewith
IPC: C07D213/20
Filed: 1941-11-04
Abstract: Quaternary ammonium salts suitable for rendering fabrics water repellant are prepared by reacting (a) a halide of an aliphatic carboxylic acid having at least ten carbon atoms with an aliphatic aldehyde and a tertiary amine and (b) a mixture of a higher fatty acid and a weak carboxylic acid with an aliphatic aldehyde and thionyl chloride and treating the intermediate product thus obtained with a tertiary amine.  Instead of using an acid chloride of the higher fatty acid a mixture of the acid with thionyl chloride may be used.  In examples: (1) stearyl, lauric and oleyl chlorides are reacted with paraformaldehyde and pyridine: (2) stearyl chloride, paraldehyde and pyridine are reacted together to give a -stearoxyethylpyridinium chloride: (3) palmitic acid, paraformaldehyde and thionyl chloride are heated on a steam bath and the resulting chlormethylpalmitate treated with pyridine: (4) stearoxymethylpyridiniumacetate is obtained by reacting stearic acid, acetic acid, paraformaldehyde and thionylchloride and treating the product with pyridine: (5) chlormethylstearate made as in example 1 is treated with triethanolamine.  For waterproofing cotton, linen, rayon, cellulose acetate, wool and silk the textile, after treatment with the water solution or dispersion, is dried below 100 DEG  C. and then heated to decompose the impregnated quaternary ammonium salt. The treating solution may contain a salt of a weak acid to avoid tendering and to give the textile a soft feel.  No salt is necessary when a strong base such as trimethylamine is used as the tertiary amine or when weak organic acids are used in place of halides.  The solutions of the products foam strongly.
Patent GB-460405-A (GB)
Title: Improvements in and relating to the manufacture and production of safety paper
IPC: D21H21/46
Filed: 1936-05-20
Abstract: 460,405. Security paper. CLAYTON, C. E. EVERY-. (Schoeller & Bausch, F.) May 20, 1936, No. 14325. [Class 96] To pulp or paper is added an inorganic salt giving a colour reaction to mild reducing agents e.g. sulphites ; substances giving colour reactions with oxidizing agents may also be used. The substances may be sprayed, painted, printed &c. on to paper. In examples, mercury-I-tungstate is precipitated on, or manganous tellurite is added to, pulp in a Hollander, or 10 per cent of manganous ferrocyanide is so precipitated and the paper impregnated with concentrated alkali selenite, or paper is printed with moist barium tellurite.
Patent GB-104644-A (GB)
Title: Improvements in Driving and other Chains.
Inventor: BURRIDGE ABRAHAM
IPC: F16G13/07
Filed: 1916-10-10
Abstract: 104,644. Burridge, A. Oct. 10, 1916. Sheet-metal, leather, and like chains comprise links A having a transverse bar B at one end and a substantially triangular slot C at the other. The links are connected together by inserting the bars B in the slots C of adjacent links. In the case of leather, cardboard, and like links, the bars B are reinforced by bending a disk of sheet metal over the edge subject to wear.
Patent GB-257040-A (GB)
Title: Improvements in and relating to apparatus employing an indiarubber printing-cloth
IPC: B41L19/00
Filed: 1925-06-02
Abstract: 257,040. Marks, E. C. R,. (Gerasch Ges., E.). June 2, 1925. Cylinder and like machines; offset machines.- The protective zinc cover b in printing-apparatus employing an indiarubber printing-cloth is yieldably mounted outside the printing-surface by beading formed by bending over the cover preferably into the form of a spiral so as to avoid the use of lateral retaining-plates which may obstruct the scraper-bar, and to enable the cover to return to its original position without deformation after the passage of the scraper. The cover is removably secured in position by passing the headings on to bars w rigidly but adjustably mounted on the part of the apparatus carrying the indiarubber cloth, and the ends of the cover slope downwardly towards the headings to avoid any obstruction to the movement of the scraper. The device may be used with the method described in Specification 202,624.