baber/WOPTO huggingface dataset:
Patent GB-836272-A (GB)
Title: Improvements in or relating to substituted coumarones
IPC: C07D307/80
Filed: 1957-12-17
Abstract: The invention comprises coumarones of the following formula <FORM:0836272/IV (b)/1> wherein R1 is ethyl, propyl or benzyl when R2 is a halogenated or non-halogenated p-hydroxybenzoyl or halogenated or non-halogenated phydroxyphenylcarbinyl group, or R1 is a halogenated p-hydroxybenzoyl group when R2 is hydrogen or ethyl, together with processes for their preparation (a) by demethylating coumarones of the above formula wherein R1 is ethyl, propyl or benzyl and R2 is p-anisoyl, by heating with pyridine hydrochloride to give the corresponding p-hydroxy-benzoyl derivative, which may be directly halogenated to the corresponding p-hydroxy-halogeno-benzoyl coumarone, or reduced to a 3 - p - hydroxyphenylcarbinyl coumarone which may be subsequently halogenated; or (b) directly halogenating a substituted coumarone of the above formula wherein R1 is p-hydroxybenzoyl and R2 is hydrogen or ethyl to form the corresponding 2p - hydroxy - halogeno - benzoyl - 3 - hydrogen or 3-ethyl coumarones.  The reduction of the benzoyl moiety is preferably effected with isopropyl alcohol and aluminium isopropylate.  Detailed examples are given, and halogenated compounds of the invention specified include 2ethyl - 3 - (41 - hydroxy - 31,51 - diiodophenyl-carbinyl), coumarone, 2 - ethyl - 3 - (41 - hydroxy - 31,51 - dibromobenzoyl) coumarone, its diiodo analogue, 2 - (41 - hydroxy - 31 - chloro benzoyl) coumarone and its 31-fluoro-, 31,51diiodo-, 31,51-diiodo-3-ethyl, and 31,51-dibromo-3ethyl analogues. 2 - Acetylcoumarone and its 2 - propionyl -, - 2 benzoyl - 2 - p - anisoyl - and 2 - p - anisoyl - 3ethyl analogues are prepared by reacting an alkali metal salt of salicylic aldehyde or an alkyl phenone with a -haloketone; 2-ethylcoumarone and its 2-propyl- and 2-benzylanalogues are obtained by reduction of the 2-acyl compounds with alkaline hydrazine hydrate, and their 3anisoyl derivatives then prepared by condensation with anisoyl chloride in the presence of tin tetrachloride.
Patent GB-1012972-A (GB)
Title: Improvements in or relating to electric rectifier circuit arrangements
IPC: H02M7/06
Filed: 1962-10-17
Abstract: 1,012,972. Rectifying. SANGAMO WESTON Ltd. Oct. 17, 1962 [Jan. 8, 1962], No. 39314/62. Heading H2F. [Also in Division G1] A rectifying arrangement, which may be used for supplying a centre zero direct current meter 21 measuring an alternating voltage, comprises Zener diodes 14, 15 and resistors 16, 17 connected in a bridge as shown. For a particular input voltage the direct output is zero, and for smaller or larger inputs respectively the direct component of the output voltage varies in one sense or the other. The circuit may supply an error signal for an alternating voltage stabilizing arrangement (Fig. 5, not shown) or may operate one of two oppositely polarized relays (Fig. 6, not shown).
Patent GB-1023208-A (GB)
Title: Bisphenol
IPC: C07C37/14
Filed: 1964-09-28
Abstract: Lubricating oils and greases are stabilized by the presence of a compound of formula <FORM:1023208/C4-C5/1> The greases otherwise contain (a) paraffinic, naphthenic, aromatic and mixed petroleum oils, and (b) a Li, Na, K, Ca, Ba or Al soap derived from stearic, oleic, palmitic, lauric, rosin or petroleum (e.g. naphthenic) acids or wool fat.ALSO:The invention comprises the compounds of formula <FORM:1023208/C2/1> and a method for preparing then by reacting with formaldehyd 2-(alpha-methylxylyl)-p-cresol; the latter is made by reaction of p-cresol with vinyltoluene which may be the o-, m- or p-isomer or a mixture thereof.
Patent GB-1439540-A (GB)
Title: Method of producing a powder from milk or similar products and an atomizer for use in carrying out said method
IPC: A23C1/04
Filed: 1973-08-20
Abstract: 1439540 Spray drying and de-gassing liquids; spray-producers NIRO ATOMIZER AB 20 Aug 1973 [29 Aug 1972] 39361/73 Headings B1B, B1M and B2F Milk or similar liquid is spray dried using a rotating atomizer wheel by heating the liquid, prior to atomization into a drying chamber, to such a temperature that degasification occurs inside the atomizer wheel and removing the gas so released before atomizing the liquid. Heating may be by mixing with steam either before the liquid enters the atomizer wheel or inside the wheel. The drying chamber may be under reduced pressure. The atomizer comprises a wheel 102 which has two sets of ejection apertures 106, 107 in a mutually axially spaced relationship, each set communicating with its own of two annular supply compartments 104, 105, one supply compartment 104 only communicating with a feed pipe 156 for liquid to be spray dried and the two supply compartments 104, 105 intercommunicating by means of at least one aperture 150. The two sets of ejection apertures are so constructed that the upper set 107 has a greater fan effect than the lower set 106. The resultant pressure differential serves to remove the gas outgassed from the liquid in chamber 104 via aperture(s) 150 and chamber 105. As shown in Fig. 2 the liquid is heated by steam supplied by pipe 154 through annular duct 165, chambers 104, 105, aperture 150 and liquid supply duct 164 all being annular and concentric with shaft 101. The upper surface of the wheel 102 carries vanes 151 and is supplied with air via pipe 162 to prevent particles being drawn in to the space between the wheel and its support. In another embodiment (Fig. 1, not shown) the liquid and steam are mixed in a chamber 18 in the support for the wheel before delivery to the lower supply compartment 4 in the wheel.
Patent GB-1161415-A (GB)
Title: Improvements in or relating to Colour Television Systems
Inventor: BRUCH WALTER
IPC: H04N11/06
Filed: 1966-09-05
Abstract: 1,161,415. Colour television. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 5 Sept., 1966, No. 39504/66. Heading H4F. The invention relates to a 625 line/50 field colour television system in which there is a chrominance carrier signal which is reversed in phase for alternate lines (e.g. the P.A.L. system or the amplitude-modulated SECAM system under certain colour conditions) and wherein an interlaced dot pattern in adjacent field lines is produced by selecting the colour carrier frequency to have a quarter line offset in relation to the line frequency. In the prior art the carrier is also shifted in frequency by half the raster frequency (or a multiple thereof) so as to cause the production of a stationary dot pattern, the complete pattern being built up over eight rasters. The production of a frequency shift of half raster frequency (i.e. nominally 25 c/s.) is difficult and in accordance with the invention is avoided by slightly changing the line frequency of the system from the standard for the system by an amount which is sufficiently small to enable ordinarily available commercial and domestic receivers to operate satisfactorily. The line frequency may be changed either by altering the number lines per field from 625 to 613, 619, 621, 627 or 629 or by retaining the standard number of lines per field and altering the raster frequency. In general, if n is the number of lines, it must satisfy the relationship n = 8K-5 or n = 8K-5, where K is a whole number.
Patent GB-802065-A (GB)
Title: Structural unit
IPC: E04C2/288
Filed: 1955-01-07
Abstract: 802,065. Building units. WHEELING STEEL CORPORATION. Jan. 7, 1955 [Oct. 19, 1954], No. 39615/56. Divided out of 802,064 [Group VIII]. Class 87(1) A building unit comprises a core 16 which consists of fibrous glass &c. bound with a thermosetting synthetic resin and has secured to one or both faces expanded metal &c. sheets 17 and a facing layer of plaster 18. The unit may be reinforced with rods, angles or bars.
Patent GB-925600-A (GB)
Title: Improvements in or relating to furnaces
Inventor: LOEWENSTEIN KLAUS LEOPOLD
IPC: C03B5/033
Filed: 1960-11-21
Abstract: 925,600. Crucibles. MICROCELL Ltd. Nov. 21, 1961 [Nov. 21, 1960], No. 39931/60. Class 82. [Also in Group XI] A vessel 1 included in an electric furnace (see Group XI) is made of electrically conducting material, e.g. platinum or an alloy of platinum and other metals in the platinum group, and is heated by an electric current passing through it by way of a pair of lugs 3, 4. The vessel is substantially cylindrical in shape and is provided with a tube 2 through which material e.g. glass or its constituents, is passed into or out of the vessel. The vessel is also provided with a tube 5 and a lug 6 serving as means for mounting a thermocouple with which the temperature of the vessel can be measured; the tube 5 does not open into the vessel. The lugs 3, 4, 6 and the tubes 2, 5 are attached to the vessel by welding, and the vessel may be formed from two semi-cylindrical parts each provided with a slot to receive the lug 3 or 4.
Patent GB-909603-A (GB)
Title: Plastic coating processes
IPC: B05D5/00
Filed: 1960-11-21
Abstract: A process for the production of an abrasion resistant layer on a transparent cellulosic sheet material comprises applying to the sheet material a thin layer of a mixture of a bis (methacrylic) ester of a polyalkylene glycol and alpha-naphthoyl peroxide as polymerization catalyst and subjecting the product to polymerization conditions to polymerize the layer.  Application and polymerization of the mixture may be effected continuously, polymerization being effected either by maintaining the layer in contact with a heated surface, or in an air-free atmosphere.  The transparent cellulosic sheet material may take the form of optical elements and devices, e.g. lenses, filters, sun-glasses and visors, or such elements may be cut or stamped from the coated material.  The sheet material may be coated with nitrocellulose prior to the application of the mixture.  The viscosity of the mixture may be increased by addition thereto of cellulose nitrate. Examples of bis (methacrylic) esters of polyalkylene glycols are di, tri, tetra, and penta ethylene glycol dimethacrylates.  The abrasion resistant layer may be formed on the surfaces of a light polarizer consisting of a molecularly oriented layer of polyvinylalcohol, containing a dichroic dye or stain, between layers of a cellulosic material, e.g. cellulose acetate or acetatebutyrate.ALSO:A mixture, suitable for application to a transparent cellulosic sheet material and polymerization thereon to produce an abrasion resistant layer, comprises a bis(methacrylic) ester of a polyalkylene glycol and alpha-naphthoyl peroxide as polymerization catalyst.  Application and polymerization of the mixture may be effected continuously, polymerization being effected either by maintaining the layer in contact with a heated surface, or in an airfree atmosphere.  The viscosity of the mixture may be increased by addition thereto of cellulose nitrate.  Examples of bis(methacrylic) esters of polyalkylene glycols are di-, tri-, tetra- and penta-ethylene glycol dimethacrylates.
Patent GB-950502-A (GB)
Title: Method of producing a polyamide coating
IPC: B05D7/26
Filed: 1962-11-08
Abstract: Corrosion-resistant, adherent coatings of polyamides on surfaces are produced by applying a thin priming layer of a diluted butadiene-styrene coplymerization product and, before this has completely set, applying a layer of the polyamides.  The primer may be applied by brushing, spray gun, immersion or electrostatic deposition of an organic solvent solution, and may contain pigments or metal powders.  The polyamide may be applied by flame spraying or by the fluidized bed technique and may contain pigments, e.g. cobalt blue.  The coatings may be applied to steel sheets which have previously been degreased, sand-blasted or phosphated, and the coated surface may then be heated to 150-200  DEG C. through the pipe 24 and thence through the filter 26-28 into the duct 21.  Outer peripheral lugs 23 on the filter base 17 slidably locate the filter assembly concentrically in the casing 10 so that on removal of the cover 40, the filter assembly together with the magnets 48 and ring 49, 50 can be removed as a unit for cleaning purposes.
Patent GB-1354557-A (GB)
Title: Bogie for railway vehicles
IPC: B61F5/12
Filed: 1971-08-26
Abstract: 1354557 Railway vehicle undercarriages WEGMANN & CO 26 Aug 1971 [27 Aug 1970] 40146/71 Heading B7L A bogie is equipped with a bolster 6 carrying stop members 8, 9a and 9b on its transverse sides, these members being in rubbing engagement with checkplates 10 on the bogie frame, and two of the members (9a and 9b as shown) are movable and loaded by springs 12 so that  the movable members 9a and 9b apply torques to the bolster 6 about its vertical centre axis which act in the same sense to resist oscillatory rotary motions of the bolster relative to the bogie frame. The stop members 8, 9a and 9b may be at a distance from the vertical longitudinal median plane L of the bogie which is  greater than two-thirds of one half the length of the bolster 6. As shown, the movable stop members 9a and 9b are on different sides of the plane L and on different side faces of the bolster. The spring loading of members 9a and 9b is provided by helical springs 12 acting on guide members 14, which carry the members 9a and 9b and are received in bores 13 in the bolster. The bolster may support a rail vehicle body 3 through a ball and socket joint 4, 5 of which the socket 5 has a friction lining 15.
Patent GB-1529379-A (GB)
Title: Automatic discharge threestage centrifugal sludge separator
IPC: B04B1/18
Filed: 1976-09-29
Abstract: 1529379 Centrifugal separator MITSUBISHI KAKOKI KAISHA Ltd 29 Sept 1976 40385/76 Heading B2P An automatic-sludge-discharging centrifuge for separating a liquid mixture into sludge, heavy liquid and light liquid components comprises a rotary vessel 44, 45, Fig. 1, having an inlet 19 for the mixture to be separated, nested separator plates 15, a light liquid outlet 1, a heavy liquid outlet 2, and sludge outlet, 48 controlled by a cylindrical valve 50 slidable between the open and closed positions by liquid in variable-volume pressure chambers 31 and 32 respectively. When accumulated sludge 28 builds up in the sludge chamber 18 of the vessel and eventually blocks a discharge passage 27 for the heavy liquid, the trapped heavy liquid similarly builds up in a heavy liquid sensing chamber 30 and overflows via passage means 69, 22, 21, Figs. 4 and 5 into a chamber 33 to force a piston 36 downwardly thereby opening a valve 38, 39 to allow liquid from a chamber 24 to flow through passages 66, 65, 35, 61 into chamber 31 and force the valve 50 downwardly to open the sludge outlets 48. The liquid in chambers 31 and 33 is slowly bled off through vent nozzles (57), Fig. 3 (not shown) and 59, Fig. 5, respectively whereby liquid in a chamber 23 flows through a passage 62 into chamber 32 to raise the valve 50 and close the sludge outlets 48 and flows through a passage 64 into a chamber 34 to raise the piston 36 and close the valve 38, 39. Alternatively, a spring may be used to raise the piston 36. The centrifuge may be used to separate water and sludge from fuel oil, animal oil or vegetable oil.
Patent GB-1303499-A (GB)
IPC: G03G15/10
Filed: 1970-08-21
Abstract: 1303499 Electro-photographic developing process RANK XEROX Ltd 21 Aug 1970 [27 Aug 1969] 40429/70 Heading G2H A conductive drum 10, for applying toner to a latent image bearing web 1, is coated at 11 with a suspension of toner in a high viscosity liquid 15 and is coated at 17 with a viscosity-reducing liquid 18. Drum 10 is preferably recessed so that it only contacts the edges of web 1. Web 1 is preferably pretreated with an anti-foggant, non- polar hydrocarbon liquid 6 and after development is washed at 20. (For Figure see next page)
Patent GB-935853-A (GB)
Title: Improvements in or relating to aldehyde-modified alkyd resins
IPC: C08G63/66
Filed: 1960-11-30
Abstract: Films are cast on glass plate from solutions in xylene, naphtha or mineral spirits of alkyd resins prepared from polycarboxylic acid or anhydride, one or more monocarboxylic acids (aliphatic of 4-24 carbon atoms or mononuclear aromatic), an aldehyde, and an alcohol of the formula <FORM:0935853/III/1> where A is hydrogen, hydroxyl, alkyl of up to 4 carbon atoms, <FORM:0935853/III/2> or <FORM:0935853/III/3> The films may subsequently be baked: metallic naphthenate driers may be added to the solution.ALSO:Alkyds are prepared from: (1) one or more polyols of the formula: <FORM:0935853/IV(a)/1> where A is H, OH, an alkyl group of up to 4 carbon atoms, <FORM:0935853/IV(a)/2> <FORM:0935853/IV(a)/3> (2) an aldehyde, (3) one or more of aliphatic or aromatic polycarboxylic acids and anhydrides, (4) one or more monocarboxylic acids which are mononuclear aromatic or are aliphatic having 4 to 24 carbon atoms.  Many suitable compounds are listed. Per mole of polyol, there are used: 0,3-0,8, preferably 0,5-0,6 mole of aldehyde; 0,6-1,3, preferably 0,9-1, mole of dicarboxylic acid (with acids having more CO2H groups, correspondingly less is used); 0,2-1,5, preferably 0,5-1,0 mole of monocarboxylic acid.  There is usually an excess of polyol, which may be 1-50% or preferably 1-20%. Preferably, all four reactants are heated to 110 DEG -270 DEG C., preferably 220 DEG -250 DEG C., to give an acid number below 30.  Or the aldehyde, alcohol and polybasic acid are heated to 110 DEG -220 DEG C., preferably 140 DEG -200 DEG C., and the monocarboxylic acid is added and heating continued at 230 DEG -270 DEG C. to an acid number below 30, preferably below 15.  An acetal may be prepared from the alcohol and aldehyde at 25 DEG -150 DEG C. and heated with the acids at 110 DEG C.70 DEG C., preferably 200 DEG -250 DEG C.  Heating to 70 DEG -200 DEG C. with a catalyst such as BF3 causes an increase in viscosity of the alkyds.  Resins F and G in Example 1 contain no aldehyde and are made from glycerol and trimethylolethane respectively.  They are included for comparison.
Patent GB-1123804-A (GB)
Title: Water-soluble dyestuffs and a process for preparing them
IPC: C09B62/485
Filed: 1965-09-29
Abstract: Water-soluble dyes of general formulae <FORM:1123804/C4-C5/1> <FORM:1123804/C4-C5/2> in which A is the radical of an organic dyestuff molecule, Y is -NH-, <FORM:1123804/C4-C5/3> or -O-, D represents -CO-, -SO2- or -COCH = CH-, n is 1 or 2 and in which Z is a group of formula <FORM:1123804/C4-C5/4> <FORM:1123804/C4-C5/5> in which R1, R2, R3, R4 and R5 which may be the same or different, each represents a hydrogen atom, a chlorine atom, an alkyl group or aryl group, or R1 and R2 together with the bond shown represent a double bond between C1 and C4 and X1 and X2 which may be the same or different, each represents a halogen atom are prepared by treating one mole of a dyestuff AWm in which A is as above and W is an amino, alkylamino, arylamino or hydroxyl group with at least one mole if m is 1 or at least 2 moles if m is 2 of a compound of formula Z-B in which Z is as above and B is -CO halogen, -SO2 halogen or -CH = CH-CO halogen at a temperature of 0-80 DEG  C. in aqueous, aqueous organic, or organic medium at a pH of 2-6.5 in presence of an acid binding agent. The phosphorus containing dyes are prepared by treating at least two moles of a compound A-W with one mol. of a compound of formula <FORM:1123804/C4-C5/6> under the same conditions as above. The group A may be azo, anthraquinone, phthalocyanine, acridone or a thioxanthone dyestuff.  A wide range of dye colours are obtained.
Patent GB-1141416-A (GB)
Title: Speed and directional control valve for double acting lift cylinder
Inventor: TENNIS FRANCIS HENRY
IPC: F15B13/04
Filed: 1967-09-13
Abstract: 1,141,416. Valves. HYDRAULIC UNIT SPECIALTIES CO. 13 Sept., 1967, No. 41743/67. Heading F2V. [Also in Division F1] An hydraulic control valve for governing flow of pressure fluid to and from the head and rod ends of a double-acting lift cylinder 6, has the inlet 16 connected to a supply passage 14<SP>1</SP> which has two branches 18, 19 interconnected by a check valve 20. When the spool 10 is moved to the position shown which is a highspeed lift position, the return fluid from the rod end of the cylinder passes through port 31 and branch 19 to flow with the supply fluid past the check valve 20 and port 30 to the head end of the cylinder. If the spool is moved to the left from the position shown to a slow-lift position, the fluid returning to port 31 flows through port 33 to the reservoir. Further movement of the spool to the left moves it into neutral position in which the inlet 14 is connected to the outlet 15. Movement of the spool to the left of neutral to the lowering position connects the inlet to port 31 while the head end of the cylinder is connected to the reservoir via restriction 42 and port 32 with communication to branch 18 cutoff.
Patent GB-1417928-A (GB)
Title: Recovery of the pentahydrate trisodium salt of  carboxy  methoxy succinic acid
IPC: C07C59/305
Filed: 1973-09-05
Abstract: 1417928 Trisodium salt of carboxy methoxy succinic acid ETHYL CORP 5 Sept 1973 [11 Sept 1972] 41776/73 Heading C2C Pentahydrate trisodium salt of carboxy methoxy succinic acid is recovered in particulate form by evaporating an aqueous solution of the trisodium salt at about 87‹ C. or lower and then holding the concentrated solution at about 50‹ C. or lower to form the precipitate which is recovered. The evaporation temperature may be at 50‹ C. or below and the pressure may be autogenous or lower than the vapour pressure of the saturated solution. The salt may be used as a detergency builder. Reference has been directed by the Comptroller to Specification 1,327,115.
Patent GB-880052-A (GB)
Title: Removal of hydrogen sulphide from coal gas
IPC: C10K1/12
Filed: 1959-12-09
Abstract: 880,052. Purifying gas. KLOENNE, A., and KLOENNE, M., [trading as KLOENNE A. [Firm of]]. Dec. 9, 1959 [Dec. 17, 1958], No. 41809/59. Drawings to Specification. Class 55 (2). In a process for removing hydrogen sulphide from coal gas of the type wherein the coal gas is scrubbed with an ammoniacal liquor which is subsequently treated in a deacidifier to remove absorbed hydrogen sulphide and after cooling, returned to the scrubber for further scrubbing of the coal gas, the ammonia content of the ammoniacal liquor returned to the scrubber is increased by admitting to the deacidifier a mixture of ammonia and steam from an ammonia still in which is being distilled the ammoniacal condensate from the gas coolers. The mixture of ammonia and steam is preferably introduced into a lower part of the deacidifier so that the heat of the mixture is used in the deacidification of the ammoniacal liquor.
Patent GB-1076525-A (GB)
Title: Improvements in or relating to plasterers'trowels
Inventor: MILLS EDMUND HARRY
IPC: E04F21/06
Filed: 1964-11-14
Abstract: 1,076,525. Plaste@ers trowels. SYLVA TOOLS Ltd. Feb. 14, 1966 [Nov. 14, 1964], No. 41820/64. Heading E1S. A plasterers trowel comprises a backing member having a barbed tang round which a handle of polypropylene is moulded the backing member being secured along the centre line of a rectangular sheet steel blade by selftapping screws the heads of which are ground flush. The handle is hollow and closed by a snap-in plug.