baber/WOPTO huggingface dataset:
Patent GB-749431-A (GB)
Title: Improvements in or relating to catalyst stones for the decomposition of concentratedhydrogen peroxide
Inventor: PEERS CHARLES HARGRAVE
IPC: B01J23/34
Filed: 1949-08-19
Abstract: Abrasion-resistant catalyst stores for the decomposition of hydrogen peroxide are prepared by forming a mixture of, as the first component, a catalytic material capable of decomposing hydrogen peroxide, e.g. magnesium dioxide or cobalt oxide, or a substance, e.g. alkali metal permanganate, which when decomposed by heat yields the same and, as the second component, lead monoxide or dioxide or a mixture thereof, into pellets, cubes or other shaped bodies with the aid of a refractory cement such as Portland cement, drying and then strongly heating the pellets to sinter the lead oxide but without fusing the whole of the pellets. The stones preferably contain a small amount of free alkali e.g. potassium hydroxide, and when the initial mixture contains potassium permanganate, manganese dioxide and free alkali are formed therefrom during the sintering operation. In addition to potassium permanganate, soluble salts which are reactive with hydrogen peroxide, e.g. potassium iodide and potassium chromate, may also be incorporated.  Specifications 485,178 and 489,551 are referred to.
Patent GB-781587-A (GB)
Title: Improvements in and relating to electrically heated kilns or furnaces
Inventor: BAKER CYRIL JAMES WILLIAM
IPC: H05B3/66
Filed: 1954-07-26
Abstract: 781,587. Electric furnaces. BRITISH CERAMIC RESEARCH ASSOCIATION. July 25. 1955 [July 26, 1954], No. 21698/54. Class 39(3) Electric heating resistances 15 are supported on the walls and roofs of furnaces or kilns by enlarged annular open mouths 11 of ceramic holders 10 having T- shaped stems 12 slid into T-shaped recesses in the brickwork, with a half of each recess in adjoining faces of adjacent bricks. The holders may be of sillimanite and according to the Provisional Specification may be built up in short lengths fitted together to form a continuous support.
Patent GB-793594-A (GB)
Title: Vulcanisable compositions
IPC: C08K5/39
Filed: 1956-07-13
Abstract: Vulcanizable compositions consist essentially of (a) one or more polysiloxanes having a viscosity of at least 10,000 cs. at 25 DEG  C. and having an average of from 1.9 to 2 saturated aliphatic, saturated cycloaliphatic or aryl hydrocarbon radicals per silicon atom; (b) from 20 to 60 parts by weight per 100 parts of siloxane of a silica filler, the surface of which is saturated with <FORM:0793594/IV (a)/1> units in which n has an average value from 2 to 3 inclusive, the units being attached to silicon through Si.O.Si linkages; and (c) from 0.5 to 10 parts (by weight) per 100 parts of siloxane of a vulcanizing agent which is a thiuram disulphide or a polyvalent metal salt of a dialkyldithiocarbamic acid.  Vulcanization is effected by heating preferably at temperatures from 110 DEG  to 250 DEG  C. Ingredients specified are (a) siloxanes containing methyl, ethyl, propyl, octadecyl, cyclohexyl, cyclopentyl, phenyl, xylyl or naphthyl radicals; (b) fillers made treating a finely-divided silica aerogel or fume silica with a chlorosilane or by the method of Specification 783,868; (c) vulcanizing agents:-tetramethyl-, tetraoctadecyl-and di-n-pentamethylene-thiuram disulphides and dithiocarbamates of the general formula <FORM:0793594/IV (a)/2> where Y is a monovalent hydrocarbon radical, e.g. methyl, ethyl, butyl, benzyl and phenyl, M is a polyvalent metal, e.g. zinc, lead, copper, bismuth, selenium and tellurium and x is at least 2 and equal to the valency of M. Pigments, compression set additives, &c., may also be added.  The vulcanized compositions are useful for electrical insulation and gaskets.  Specification 781,278 also is referred to.
Patent GB-868023-A (GB)
Title: Production of condensation products of aliphatic alcohols
Inventor: ADDY LESLIE ERNEST
IPC: C07C45/73
Filed: 1958-07-07
Abstract: Condensation products (ketones and carbinols of increased molecular weight) are prepared by contacting an aliphatic monohydric secondary alcohol of up to 6 carbon atoms in the vapour phase at elevated temperature with a supported metallic nickel catalyst promoted with an alkali metal oxide, hydroxide or salt of a weak organic or inorganic acid.  The starting alcohol may be mixed with the corresponding ketone, which may be that formed as a byproduct and recycled.  Inert solvents or gases may be present. A hydrogen acceptor such as an olefinic, acetylenic or aromatic hydrocarbon, or quinone, may be present (see Specification 880,406).  Reaction temperatures of 100-300 DEG C. are mentioned. Elevated, atmospheric or reduced pressures may be used.  The catalyst may be obtained by impregnating nickel oxide/kieselguhr pellets with an aqueous solution of the alkali metal compound (e.g. KOH of sufficient strength to give a catalyst containing about 1% of KOH) and reducing the impregnated catalyst, which may then be steam treated.  In the process of the invention isopropanol yields mainly methyl isobutyl ketone and methyl isobutyl carbinol with acetone as byproduct and some diisobutyl ketone; and secondary butanol gives C8 ketone and methylethyl ketone as byproduct.ALSO:A supported metallic nickel catalyst is promoted with an alkali metal oxide, hydroxide or salt with a weak inorganic or organic acid (e.g. carbonate, bicarbonate, acetate) or mixtures thereof.  In Example 1, nickel oxide/kieselguhr pellets are impregnated with an aqueous potassium hydroxide solution of strength to give a catalyst containing 1% by weight of KOH, dried at 120 DEG C., and reduced with hydrogen at 300-340 DEG C.; the catalyst may then be steam treated at 125-230 DEG C.  In Example 3, catalysts containing 1 and 2% of NaOH are used.
Patent GB-391763-A (GB)
Title: Improvements in or relating to current interrupters, in particular for impulse sending apparatus
IPC: G05B19/06
Filed: 1931-07-30
Abstract: 391,763. Electromagnetic interrupters. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. July 30, 1931, No. 21794. Convention date, Aug. 2, 1930. Void [Published under Sect. 91 of the Acts]. [Class 38 (v).] An interrupter which may be used for transmitting current impulses to remotely-controlled apparatus comprises a driven shaft 6 on which is mounted a non-magnetic disc 4 on opposite sides of which pairs of horse-shoe magnets 5 are disposed with opposite poles N, S adjacent to each other. Mounted close to the periphery of the disc are a pair of spring contacts 1, 2, the latter carrying an armature 3 which is attracted to break contact between the springs 1, 2 each time a pair of associated poles passes, so transmitting a current impulse in the controlled circuit. The magnets may be spaced around the disc to produce equal make and break periods. The contacts and armature may be mounted within a sealed envelope which may be evacuated or filled with an inert gas. If desired several contact-making arrangements may be spaced around the disc. In alternative forms the rotor may carry a single diametricallydisposed bar magnet or star-shaped magnet magnetized as shown in Fig. 2.
Patent GB-576488-A (GB)
Title: Improvements relating to collapsible vehicles
IPC: B62D63/06
Filed: 1943-12-29
Abstract: 576,488. Collapsable vehicles. BLACK, T. R. Dec. 29, 1943, No. 21799. Convention date, Dec. 4, 1942. [Class 108 (i)] A collapsable vehicle, e.g., a trailer, comprises a central longitudinal frame 11 and wheel frames 16 hinged to the longitudinal frame by transverse stays 12 whereby on removal of the floor boards 33 and ends 37, 38 the frame may be moved forwardly to collapse against the longitudinal 11 and be secured thereto by spring clips 39 engaging under the sides 30. The central member 11 may comprise two vertically spaced tubes brought together at their forward end in a coupling 25. The two tubes are welded to two transverse plates 14 forming the hinge points of the transverse members 12, and also carries a plate 36 for supporting the floor boards 33 at its hinged edges and the clips 39. An adjusting screw 43 at one end of the member 11 and an adjusting clip 27 at the other keep the wires 40, 26 taut to maintain the frame in its open position. The rigidity of the frame is increased by the floor boards 33 hinged at 34 and by the front and rear boards 37, 38.
Patent GB-688888-A (GB)
Title: Improvements in or relating to vibration absorber
Inventor: RIOPELLE EARL FRED
IPC: F16F15/14
Filed: 1951-09-18
Abstract: 688,888. Torsional - vibration dampers. MORSE CHAIN CO. Sept. 18, 1951, No. 21856/51. Class 108 (iii). A torsional vibration damper comprises an inertia member 24 and a member 22 keyed to the shaft 21 to be damped, a plurality of radially arranged pockets 41, within each of which is disposed a respective bolt 35 which is threaded to a boss 22a on the member 22, and an elastic member 25 contained in each pocket 41 between an abutment 24a and a circlip 42, and confined between a shoulder at the head of the related bolt 35 and the face of the associated boss 22a. The member 22 as shown comprises a fan belt pulley. The device also damps out vibrations due to bending of the shaft.
Patent GB-986453-A (GB)
Title: Corrosion-prevention process
Inventor: COWLEY WILLIAM EDWARD
IPC: F02B3/06
Filed: 1962-06-06
Abstract: The corrosion of metal surfaces in contact with ethylene dibromide or ethylene, dichloride is inhibited by adding epichlorohydrin to the liquid, preferably up to 1% by volume. Other additives such as t-butyl acetate or isobutyl acetate may also be added.  Examples are given of the decreased corrosion of metal pipework when epichlorohydrin is added to the liquid and the corrosion rates are compared with those of the same liquid to which has been added the previously known inhibitors such as sodium carbonate, sodium nitrate, cyclohexylamine palmitate, di-orthotolylurea and 4-methyl-2,6-di-t-butyl phenol.ALSO:The corrosion of metal surfaces in contact with diesel oils, residual oils, fuel oils, or gasolines, inhibited by adding epichlorohydrin to the liquid, preferably up to 1% by volume. Other additives such as t-butyl acetate or isobutyl acetate may also be added.  The gasolines may also contain lead alkyls such as lead tetramethyl and tetraethyl.ALSO:The corrosion of metal surfaces in contact with the industrial liquids, diesel oils, residual oils, fuel oils, gasolines, ethylene dibromide, ethylene dichloride and lead anti-knock compounds is inhibited by adding epichlorohydrin to the liquid, preferably up to 1% by volume. Other additives such as t-butyl acetate or isobutyl acetate may also be added. The gasolines may also contain lead alkyls such as tetramethyl and tetraethyl. Examples are given of the decreased corrosion of metal pipework when epichlorohydrin is added to the liquid and the corrosion rates are compared with those of the same liquid to which has been added the previously known inhibitors such as sodium carbonate, sodium nitrate, cyclohexylamine palmitate, di-orthotolylurea and 4-methyl-2,6-di-t-butyl phenol.
Patent GB-776613-A (GB)
Title: Improvements in or relating to internal combustion engines and control arrangements therefor
Inventor: TAYLOR HARRY FREDERICK WOODWAR
IPC: F02B77/08
Filed: 1954-07-27
Abstract: 776,613. Indicating working conditions. LISTER & CO., Ltd., R. A. July 25, 1955 [July 27, 1954], No. 21959/54. Class 7 (2). [Also in Groups XXVI, XXXV and XXXVII] In an air-cooled engine having a fan for supplying the cooling air there is provided an air vane 14 adapted to be deflected by the air flowing from the fan, which vane actuates electrical switches. The vane 14 is normally vertical but when the engine is operative the vane is deflected to a position depending upon engine speed. The vane is connected to a rotatable switch plate upon which one or more mercury switches are mounted so as to operate at different vane inclinations ; the switches supervise the operation of an engine driven alternator, automatic engine starting means, including fuel supply and decompression, and lamps which indicate normal or overspeed engine running conditions (see also Group XXXV). One of the switches may also effect stopping of the engine in the event of overspeeding by opening a circuit in which is a fuel-control solenoid.
Patent GB-440382-A (GB)
Title: Improvements in safety razors
IPC: B26B21/52
Filed: 1934-07-28
Abstract: 440,382. Safety razors. MACDONALD, S., 90, Dalkeith Road, Edinburgh. July 28, 1934, No. 22120. [Class 30] The clamping together of the end cap b, the guard plate a, and an interposed blade is effected by means of an eye d secured to the cap and a hook or hooks e on a sleeve threaded on a pin i at the end of the handle c. The sleeve is forked and lies astride a bridge g provided on the plate a. By turning the handle with the hook round the eye and the pin in contact with a side of the bridge the parts are clamped together. Two eyes, one on each side of the bridge may be used, or a central hook with a bridge on each side. The sides of the bridge allow of two positions of the handle ; more positions may be provided for by notching the sides.
Patent GB-517537-A (GB)
Title: Steroid ketone compounds and their preparation
IPC: C07J75/00
Filed: 1938-07-26
Abstract: 517,537. Reduction of pregnane-3:20-diones. PARKE, DAVIS, & CO. July 26, 1938, No. 22225. Convention date, Aug. 10, 1937. [Class 2 (iii)] Pregnandone compounds are prepared by reduction of the corresponding pregnanediones characterized in that the reduction takes place catalytically with hydrogen in the presence of a mineral acid. Separation of the isomeric pregnandones is effected by means of digitonin. Catalysts mentioned include platinum black, Raney nickel catalyst, palladium black and platinum oxide. In examples (1) a glacial acetic acid solution of allo-pregnandione is shaken with hydrogen at room temperature in the presence of a reduced platinum oxide catalyst and hydrobromic acid'. After the reaction the catalyst is filtered and the hydroxy compound separated as its acid succinate. This is hydrolized and epi-allopregnanol-3-one-20 purified by digitonine; (2) pregnandione is reduced at 45‹C. with the same catalyst and mineral acid as in example (1), and the product worked up in a similar manner to give epi-pregnanol-3-one-20. This may be converted into its acetate by means of acetic anhydride. Specification 431,833 is referred to. The Specification as open to inspection under Sect. 91 includes the reduction by any method of any saturated diketone having a sterol structure. As reducing agent aluminium isopropylate is specified. The following additional examples are included : (1) Allopregnandione is'reduced in alcohol solution with hydrogen at room temperature in the presence of platinum oxide catalyst. The hydroxy compound is separated in the form of its acid succinate and purified by means of digitonin to give allopregnanol-3-one-20; (2) pregnandione is reduced under the same conditions as in example (1) and the product worked up in a similar manner to give pregnanol-3-one-20 ; (3) Androstandione is reduced in glacial acetic acid solution containing hydrobromic acid in the presence of platinum oxide catalyst, to give androsterone together with a small amount of iso-androsterone which is separated by means of digitonin. This subject-matter does not appear in the Specification as accepted.
Patent GB-1115051-A (GB)
Title: Siloxane resins
Inventor: BURZYNSKI ALFRED JOHN
IPC: C08G77/00
Filed: 1965-05-26
Abstract: A siloxane resin prepolymer is made by heating a mixture of a methyltrialkoxy silane of the formula CH3Si(OR)3, up to 5 mole per cent, calculated on the total silane reactants, of at least one silane of the formula T3SiOR, wherein each T is an aryl, alkyl or alkenyl radical containing not more than 6 C atoms or an -OR radical, and R is an alkyl radical of 1 to 3 C atoms, but T and R are so selected that the silane is not the same as the methyltrialkoxy silane, and 1.5 to 10 moles of water per mole of silane mixture, for 1 to 10 hours at 50 DEG  C. or more while retaining at least 1.5 mole of alkanol by-product in the mixture per mole of silane reactants, assuming complete hydrolysis of all the alkoxy radicals in the silane mixture, concentrating the reaction mixture by removing a substantial amount of the volatile components, the acidity of the initial mixture of reactants being less than that at which gel formation would occur in the hydrolysis or condensation steps, and then precuring the resulting mixture by heating at a temperature above the B.P. of pure water at the prevailing pressure for a time insufficient to cause solid or gel formation.  The precured mixture may then be cured by heating it at a temperature less than the boiling point of pure water at the prevailing pressure, at least until the mixture is hard enough to handle, to yield a siloxane resin.  Examples are given of the above process.  Fillers, e.g. silica, siloxane resins and clays, and additives, such as dyes and pigments, can be added to yield products useful as coloured light filters.  After casting in moulds, the resins are cured as above.  The precured mixture is soluble in water-miscible solvents, e.g. ethanol, acetone, glycol monoethyl ether and tetrahydrofuran, and can be used as film-formers, e.g. in coating applications as by spraying or brushing.
Patent GB-358171-A (GB)
Title: Process and apparatus for mechanical packing of weighed quantities of pulverous material into valve bags
IPC: B65B1/18
Filed: 1930-07-24
Abstract: 358,171. Automatic -feed weighers. MIDDLEBOE, K., 14, Thorvaldsensvej, Frederiksberg, near Copenhagen. July 24, 1930, No. 22350. [Class 143.] In a machine for filling valve bags with cement or other pulverulent material the bag 4 is suspended on a nozzle 3<11>, pivoted at 7 to a hanger 6 of a weighing mechanism, and normally held in the position shown by the engagement of a catch 9 with a hook 8<1> on the arm 8 carrying the nozzle. In this position, an inclined joint divides the nozzle 311 beneath a discharge pipe 3<1> leading from the filling tank 1. The weighing apparatus comprises a beam 11 carrying hangers 6, 12, guided by brackets 14, 15. Weights 13 depend from the hanger 12 and the movement of the weighing system is controlled by the engagement of stops 16<11>, 17<11> on the hangers with stops 161, 17<1> on the brackets. During the filling operation, a gate on an arm 18<1> is brought into the open position by the action of a cam 31<1> and held in that position by a pawl, and a spring 21 on the hanger 6 is depressed by the action of a cam 321 and a double lever 22. The action of the spring 21 causes the beam to rock before the predetermined weight of material is in the sack, and releases the lever so that the gate in the tube 31 is closed. After an interval, to allow imprisoned air to escape, the cam 32<1> releases the lever 22 and spring 21, and a cam 31<11> again opens the gate in the tube 3<1> so that the filling may be completed. Upon the completion of the weight, a cam 30<11> releases the catch 9 so that the nozzle 3<11> may swing in a clockwise direction and deliver the filled bag.
Patent GB-1036554-A (GB)
Title: Method of producing a machined metal member free from burrs
IPC: B23P9/00
Filed: 1965-05-26
Abstract: 1,036,554. Deburring valve bodies, blasting. FORD MOTOR CO. Ltd. May 26, 1965 [Aug. 12, 1964], No. 22482/65. Headings B3A and B3D. An aluminium casting is anodized and machined to shape, e.g. to form a valve in an hydraulic transmission. The anodizing renders any burrs formed brittle and the brittleness is increased by further anodizing after machining. The burrs are removed by an abrasive blast.
Patent GB-908674-A (GB)
Title: Preparation of 17ª--acyloxy-6ª--methyl-16-methylenepregn-4-ene-3,20-diones
Inventor: PETROW VLADIMIR
IPC: C07J75/00
Filed: 1960-06-28
Abstract: The invention comprises (1) a process for preparing steroids of the formula <FORM:0908674/IV (b)/1> (wherein R is an acyl group of at most 10 carbon atoms) which comprises oxidizing with an organic per-acid 3b -hydroxy- or a 3b -acyloxy - 16a ,17a  - epoxy - 16b  - methylpregn-5-en-20-one (II) to the corresponding 5a ,6a ,16a , 17a -bis-epoxide (III), reducing the 20-ketogroup to a 20-hydroxyl-group and acylating the product if desired, treating the resulting dihydroxy- or diacyloxy-compound (IV) with methyl magnesium halide to give 16a ,17a -epoxy - 6b ,16b  - dimethylpregnane - 3b ,5a ,20-triol (V), oxidizing this to the corresponding 3,20-dione (VI), dehydrating and isomerizing this to give 16a ,17a -epoxy-6a ,16b -dimethyl-pregn-4-ene-3,20-dione, treating this with a carboxylic acid anhydride in presence of an acidic catalyst to give a 3,17a -diacyloxy-6-methyl-16-methylene-pregn-3,5-dien-20-one and selectively hydrolysing the acyloxy group at position 3; and (2) as new steroids compounds III wherein the 3-group is hydroxy and acetoxy, compounds IV wherein the 3,20-groups are dihydroxy and diacetoxy, compound V and compound VI.  Detailed examples are given. Specifications 858,033 and 887,684 are referred to.
Patent GB-1447474-A (GB)
Title: Indole-2-carbaldehydes
IPC: C07D209/12
Filed: 1975-05-23
Abstract: 1447474 2-Formylindoles BOEHRINGER MANNHEIM GmbH 23 May 1975 [31 May 1974] 22732/75 Heading C2C The invention comprises compounds of formula and their acetals, wherein either R 1  is C 1-5  alkyl and R 2  is H, halogen or C 1-5  alkyl or alkoxy, or R 1  is H and R 2  is halogen or Et. In examples, these compounds are prepared by (1) pyrolysing the N<SP>1</SP> - p - tosyl derivative of the corresponding indole-2-carboxylic acid hydrazide, or (2) oxidiz. ing the analogous 2-hydroxymethylindole. Thereapeutic compositions having blood sugar lowering activity comprise compounds of the above formula and may be administered orally, parenterally or rectally.
Patent GB-1142147-A (GB)
Title: A process for making free-flowing gel particles
Inventor: CLEGG JOHN BRIAN
IPC: B01J2/30
Filed: 1965-05-28
Abstract: 1,142,147. Siliceous powders. GLAXO LABORATORIES Ltd. 23 May, 1966 [28 May, 1965], No. 22814/65. Heading C1A. [Also in Divisions A5 and F4] A powder which is used in a process for making gelled particles comprises a mixture (98% of which is passable through a 300 BSS mesh) of tale or silica and an alkali metal or alkaline earth metal aluminium silicate, e.g. Na or Ca aluminium silicate. In the process, the powder is used to collect the gelled particles formed by spraying an aqueous colloidal solution into a tower. The mixtures may contain 0À1-10% SiO 2  or 50-95% talc.
Patent GB-654234-A (GB)
Title: Improvements relating to the lubrication of antifriction bearings particularly for dynamoelectric and like machines
IPC: H02K5/173
Filed: 1945-09-05
Abstract: 654,234. Lubricating. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 5, 1945, No. 22878. Convention date, Sept. 6, 1944. [Class 12 (iii)] A shaft bearing arrangement wherein a housing encloses a ball or roller bearing for the shaft is lubricated from a mass of absorbent material 8 housed in a chamber 7 axially adjacent to the bearing, the absorbent material 8 being enclosed by a screening arrangement comprising a side screen 10 allowing communication with the bearing 6 and an underneath screen 12 providing a clearspace oil reservoir into which the oil drips from the absorbent material. A bored plug 14 provides an overflow fitting to limit the oil level in the reservoir space, the oil passing to the bearing from this space and any excess feed to the bearing being thrown off and returned through the side screen 10 to the absorbent material 8. The oil supply is inserted through a cup 13. The arrangement also includes a cylindrical member 9 arranged around the shaft to keep the absorbent material out of contact with the shaft. The screening disc 10 is backed by a washer 11 of spider form to separate it from the bearing 6. The bearing housing shown comprises an inner cap member 5 engaging a flange 4 on the end cover 2 of an electric motor. U.S.A. Specification 2,001,823 is referred to.