baber/WOPTO huggingface dataset:
Patent GB-1067674-A (GB)
Title: Improvements in or relating to the production of alumina trihydrate
Inventor: PEARSON THOMAS GIBSON
IPC: C01F7/144
Filed: 1962-10-25
Abstract: In the production of alumina trihydrate by the decomposition of sodium aluminate solution, the temperature and alumina concentration of the solution are maintained during decomposition at values selected to maintain the "alumina potential" at not greater than 25 grams per litre and preferably less than 20 grams per litre.  The "alumina potential", which is defined as (X-X\s1) where X and X\s1 are the alumina concentrations of the solution at any given time and at equilibrium, respectively, essentially is a measure of the degree of supersaturation of the aluminate solution. The temperature of the solution during decomposition preferably is maintained above 70 DEG C.  The alumina potential may be maintained at a selected value or within a selected range of values by allowing decomposition to take place at a selected temperature whilst maintaining the alumina concentration of the solution at a selected value or within a selected range of values; such decomposition may take place batchwise or continuously in a single decomposer and may include the controlled addition to the solution of sodium aluminate liquor which is richer in alumina than the solution.  Alternatively, the alumina potential may be maintained at a selected value or within a selected range of values by causing or allowing the temperature of the solution to drop in a continuous or stepwise manner as decomposition proceeds; such decomposition may take place either in a single decomposer so that the fall in temperature in relation to the decomposition rate provides the desired alumina potential or in a series of decomposers through which the aluminate solution passes batchwise in succession. When using a series of decomposers, the temperature and concentration of the solution are maintained in at least one, preferably in at least the first, decomposer at values selected to give a desired alumina potential, the desired product being obtained from that decomposer or those decomposers having the desired alumina potential; the desired alumina potential may be maintained in all the decomposers, the temperature of each decomposer being maintained lower than that of the preceding decomposer.  After a selected decomposition time, the alumina concentration of the solution may be reduced by the addition of spent liquor to prevent further decomposition, product alumina trihydrate then being removed from the solution.  The sodium aluminate solution for the above process may be constituted by a high temperature, for example above 70 DEG  C., portion of the sodium aluminate liquor formed in the Bayer process for the production of alumina.
Patent GB-1010344-A (GB)
Title: Process and apparatus for heat treatment of material which yields oxidizable volatile matter under heat
IPC: C21B13/10
Filed: 1963-10-15
Abstract: <PICT:1010344/C4-C5/1> In a continuous process for degassing, coking or calcining substances containing combustible volatile matter the material is charged on to a hearth moving through a tunnel-like oven and oxygen is introduced into the oven to combust the liberated volatile matter providing heat for the process, solid residue being discharged from the hearth.  Heat may be supplied to the charged material through the hearth, by radiation from the walls of the oven above the charge or by direct contact with a combustion flame.  The volatile matter liberated in one zone of the path traversed by the material may be combusted in another and additional volatile matter may be added to obtain higher temperatures if necessary.  Products of different stages of treatment may be removed from various zones. Temperatures of up to 2700 DEG  F. may be employed and different temperatures maintained in different zones. The materials treated include coal, coke, pitch, tar, asphalt, lignite, gilsnite and petroleum either alone or in admixture possibly in the form of briquettes.  The additional volatile matter may be supplied by spraying oil on to the moving charge.  As shown in the drawing apparatus for carrying out the process comprises a circular hearth revolving within a circular oven, pipes for exhausting and supplying gases being provided at intervals and connected to common manifolds.
Patent GB-1442606-A (GB)
Title: Child safety adaptor for an aerosol dispenser
IPC: B65D83/16
Filed: 1973-08-29
Abstract: 1442606 A child safety adaptor for an aerosol container actuator PITTWAY CORP [Trading as SEAQUIST VALVE CO] 29 Aug 1973 [19 April 1973] 40644/73 Heading F1R i A child safety adaptor for an aerosol dispenser comprises a control means having a plurality of finger guides 170a/172a and 170b/172b, the guides including springs 166a/168a and 166b/168b respectively and locking ledges 174a/176a and 174b/176b (only 176a/176b are shown in Fig. 2) which as a result of the biasing effect of the springs operatively engage the dispenser (engagement is made with the turret 11 in one embodiment), the arrangement being such that when a finger of a width greater than the distance of separation of the guides is inserted the guides move away relative to one another thereby allowing the valve actuating means of the dispenser to be actuated by the finger to dispense material from the dispenser. In another embodiment locking ledges of 212/214 of the finger guide engage in slots 208/210 of locking member 202 of the adaptor.
Patent GB-1476523-A (GB)
Title: X-ray diagnostic apparatus
IPC: H05G1/30
Filed: 1974-09-18
Abstract: 1476523 X-ray apparatus SIEMENS AG 12 Sept 1974 [19 Sept 1973] 40763/74 Heading H5R An X-ray source, e.g. for dental radiography, has a housing 6 on its beam outlet side, the housing carrying on a pivot 8 a disc 7 having apertures containing filter discs 9, 10, 11 which can be selectively introduced into the beam path 16 to vary the intensity of the beam which comes from an X-ray tube having fixed single values of operating current, voltage and exposure duration. A spring 15 engages notches 12, 13, 14 in the periphery of the disc 7 when a filter is correctly positioned. One of the apertures can be empty, i.e. to provide an unfiltered beam. The filters can be of aluminium 0À5 and 0À1 mm. thick.
Patent GB-939937-A (GB)
Title: Process for activating clays with acid
Inventor: JONES GORDON KENNETH
IPC: B01J21/16
Filed: 1958-12-19
Abstract: In a process for the activation of a clay, a slurry of clay and water is mixed with hydrochloric acid or hydrogen chloride gas is absorbed in the slurry, the mixture is digested at 100 DEG  to 200 DEG C. for at least two hours, and, after separation of the activated clay from the resultant liquor, the chlorides contained in the liquor are converted to hydrogen chloride by steam decomposition at 500 DEG  to 1000 DEG C., and recycled for the activation of further clay.  The clay which may be montmorillonite, bentonite, illite or kaolinite, is milled and mixed with water to form a slurry containing 5 to 40% by weight of clay which is mixed with hydrochloric acid solution or contacted with hydrogen chloride in an absorption tower, or the clay may be mixed with hydrochloric acid solution and then milled.  The digestion is carried out in a series of vessels and the liquor is separated from the activated clay by filtration, centrifuging or sedimentation, the clay being washed with water and a part of the washings added to the separated liquor.  The chloride ion concentration in the liquor is increased by evaporation or by adding calcium chloride, and the liquor is subjected to steam decomposition by contacting a spray of the liquor with an oil or gas flame, to obtain hydrogen chloride vapour; magnesium, aluminium, calcium and iron chlorides react with water vapour to form the oxides of these metals and hydrogen chloride, and the aluminium oxide reacts with calcium chloride and water vapour to form calcium aluminate and hydrogen chloride; magnesium aluminate and iron aluminate are also formed. The hydrogen chloride is either absorbed by further clay slurry, or is absorbed in water and the hydrochloric acid added to further clay slurry.  Specification 793,700 is referred to.
Patent GB-1507477-A (GB)
Title: Conveying apparatus for use in continuous mining
IPC: B65G35/04
Filed: 1975-10-08
Abstract: 1507477 Mining installations J D RUSSELL 8 Oct 1975 41216/75 Heading E1F [Also in Division B8] Coal from conical cutters 22, 24 and a top cutter 26, of a mining machine, is fed by screw conveyors 38 to the lower run 70 of a conveyer belt 66 which is wound off from a roll 62 on to a take up roll 58. Pinch rolls 46, 48, drag the belt off the roll 62. The machine carries plows 41, 43, and a front plow 28. A scraper conveyer 74 transfers the coal on to a main conveyer 54. The belt 66 is cleaned by a member 92, and when fully taken up may be re-loaded on the spindle of the empty roll 62. Otherwise a stand-by roll 94 may be spliced on to the end of the taken-up roll. The mining machine is driven by tracks 31, 33 and a roller 34.
Patent GB-1236842-A (GB)
Title: Process for preparing 1-alkyl-2-aminomethylpyrrolidines and intermediates therein
IPC: C07D207/20
Filed: 1969-08-19
Abstract: 1,236,842. Substituted 1-alkyl pyrrolidines. SOC. D'ETUDES SCIENTIFIQUES ET INDUSTRIELLES DE L'ILE-DE FRANCE. 19 Aug., 1969 [19 Aug., 1968; 20 May, 1969; 9 June, 1969], No. 41382/69. Heading C2C. Novel 1 - alkyl - 2 - nitromethylenepyrrolidines having the formula wherein R 1  is an alkyl group, prepared by reacting a 1-alkyl-2-pyrrolidinone of the formula with a dialkyl sulphate of the formula (R 2 ) 2 SO 4  wherein R 2  is an alkyl group having from 1 to 5 carbon atoms, or a trialkyl oxonium fluoroborate of the formula BF 4 O(R 3 ) 3  wherein R 3  is a straight chain alkyl group having from 1 to 5 carbon atoms, together with an alkali metal alkoxide and nitromethane, are used to prepare 1 - alkyl - 2 - aminomethylpyrrolidines of the formula by reduction with a metal and an acid or by the action of hydrogen in the presence of a metallic hydrogenation catalyst. The 1-alkyl-2-pyrrolidinone starting material may be prepared by hydrogenating 1-vinyl-2-pyrrolidinone in the presence of a metallic hydrogenation catalyst such as platinum black, rhodium on alumina, palladium on carbon and Raney nickel. Triethyloxonium fluoroborate is prepared by reacting boron trifluoride etherate with 1,2- epoxy-3-chloropropane at room temperature and removing any solvent by decantation.
Patent GB-944920-A (GB)
Title: A process for the production of derivatives of alpha alkaryl-cyanato phosphonic acid dialkyl esters
IPC: C07F9/40
Filed: 1961-11-20
Abstract: Products containing one or more phosphonic acid groups per mole are made by simultaneously reacting (a) an a -halogenoalkyl aryl isocyanate, (b) a compound which contains at least one hydrogen atom reactive towards an -NCO group and (c) a phosphite of general formula: <FORM:0944920/C2/1> wherein R1, R11, R111 each are benzyl, saturated or unsaturated alkyl, optionally halogen substituted or a dialkyl phosphite group, or R1 and R11 together represent a group of the formula: <FORM:0944920/C2/2> in which R and R111 each are a saturated or unsaturate aliphatic radical optionally halogen substituted. Phosphites specified are those wherein R1,R11, R111 are the same and are methyl, ethyl, benzyl, isobutyl, b -chloro ethyl, alkyl and the compounds: <FORM:0944920/C2/3> and <FORM:0944920/C2/4> The a -halogeno aryl isocyanate may contain a plurality of -NCO groups and more than one benzene ring; numerous examples are given. The term compound containing a least one active hydrogen atom includes alcohols, phenols, amines, amides, mercaptans, water glycerine diacrylate, acetoacetic and malonic ester, linear or branched polyester, polyethers or polythioethers with terminal NH2, OH or CO2H groups.  By varying the relative proportions of reactive hydrogen compound and a -halo alkyl aryl polyisocyanate the product may contain isocyanate groups which may be used in further reactions or fully reacted as typified by the compounds <FORM:0944920/C2/5> <FORM:0944920/C2/6>  The use of polymeric -NCO reactive hydrogen containing components yields polymers (see Division C3).ALSO:Products containing one or more phosphonic acid groups per mole are made by simultaneously reacting (a) an alpha halogenoalkyl aryl isocyanate, (b) a compound containing at least one hydrogen atom reactive towards an -NCO group and a phosphite of formula: <FORM:0944920/C3/1> wherein R1R11R111 each can be benzyl, saturated or unsaturated alkyl, optionally halogen substituted or a dialkyl phosphite group or R1 and R111 together represent: <FORM:0944920/C3/2> in which R, R111 each are a saturated or unsaturated aliphatic radical optionally halogen substituted. Component (b) may be a linear or branched polyester, polyether or polythioether having terminal NH2, OH, CO2H groups and (a) includes polyisocyanates thus resulting in polymethane type polymers.  Thus in Example 5 a branched polyester based on adipic, phthalic and oleic acids and trimethylol propane, N-methyl N1-(b -methylaminoethyl) piperazine, dibutyl tin dilamate, polysiloxane polyalkylene oxide copolymer, 50% aqueous sodium castor oil sulphate and diphenylchloromethane-4, 41-diisocyanate and b -trichloroethyl phosphite react exothermically to give a foam polymer.  In Examples 6 and 7 the polyester is replaced by a propylene oxide trimethylol propane polyether. The products of low molecular weight (see Division C2) may be made to contain free -NCO groups for incorporation in polymers.
Patent GB-925755-A (GB)
Title: Unreeling apparatus for strip materials
IPC: B21C47/28
Filed: 1961-11-20
Abstract: 925,755. Feeding webs; collapsible spindles. A. SCHMITY. Nov. 20, 1961 [Nov. 18, 1960], No. 41507/61. Class 100 (1). An unreeling apparatus for web material comprises two clamping cones 7 and 8, one on each of the opposing ends of two aligned and axially displaceable shafts 3 and 4, and an expanding mandrel 11, on at least one of the shafts. The apparatus is driven through a toothed wheel 6 belonging to the drive, which is splined on to the outer portion 5 of the shaft 4 allowing the shaft to be displaced axially. The two shafts 3 and 4 are each mounted in a main bearing 9, slidably arranged in a housing 1 or 2, and connected to a clamping device 10. In Fig. 2, a reel of web material 21 on a former 20 is clamped between the cones 7 and 8. Three bearing pistons 23 equally spaced around a bearing ring 24 which runs on a bearing 25 on a clamping cone 7, prevent sagging of the shaft 3. In Fig. 1, a reel 19 without a former is held by one expanding mandrel 11. Wedges 13 on the shaft 3 provide the radial movement of the expanding holders 12 through interposed lifting pins 14. The cones have at their free ends co-operating centering and entraining dogs 7a, 8a, whereby the drive of the shaft 4 can be transmitted to the other shaft 3. Cone 7 is connected to the shaft 3 by a bolt 5 and an interposed compression spring 16 which allows axial displacement of the shaft and therefore expansion of the mandrel 11. An abutment ring 17 which co-operates with an adjusting screw-threaded ring 18 on the housing 1 limits the expansion of the mandrel 11. In Figs. 3 and 4 (not shown), a mandrel 11 is arranged on both shafts 3 and 4, and bearing pistons 23 are provided on both housings 1 and 2.
Patent GB-1275005-A (GB)
Title: Process for the production of white oil
Inventor: DONALDSON ROBERT EDWARD
IPC: C10G67/14
Filed: 1970-08-29
Abstract: 1275005 Refining mineral oils GULF RESEARCH & DEVELOPMENT CO 29 Aug 1970 41689/70 Heading C5E White oil is produced by catalytic hydrogenating a lubricating oil stock containing 5-30 volume per cent of aromatics, and treating the hydrotreated material, containing less than 4 volume per cent of aromatics, by a single contacting with sulphuric acid and recovering white oil from the acid contacted material. The hydrogenation is carried out at 316-399‹ C., 175-210 kg. per cm. 2 , a liquid hourly space velocity of 0À5-3 and a hydrogen feed rate of 35À6-178 standard cubic metres of hydrogen per 100 litres of oil stock to hydrogenate aromatics whilst avoiding substantial cracking using a catalyst comprising a hydrogenating component selected from nickel and tungsten and their oxides and sulphides on a carrier having a "Cat A" activity index of less than 25. A suitable catalyst carrier is alumina containing 2 wt per cent fluorine; the fluorine can be added to the hydrogenation operation. The feed stock can be solvent extracted and dewaxed before the hydrogenation. A feed 10 is hydrogenated at 12 and the effluent is stripped with steam at 24 and contacted with 0À01-0À1 volumes of fuming sulphuric acid or oleum at 32 at 27-121‹ C. The treated material 30 is neutralized at 40 with caustic soda, extracted with an isopropyl alcohol-water mixture at 48 to remove sulphonates, vacuum stripped with nitrogen at 62 and contacted with clay at 70.
Patent GB-1280292-A (GB)
Title: Acoustically transparent submersible towable body for underwater use
Inventor: HALE NEVILLE EDWARD
IPC: B63G8/42
Filed: 1968-09-03
Abstract: 1280292 Submersible body FATHOM OCEANOLOGY Ltd 3 Sept 1969 [3 Sept 1968] 41756/68 Heading B7A A submersible towable body comprises a shell containing a drum 4 formed by inner and outer skins 15, 16, the shell and down being acoustically transparent, and a transducer 35 being removably heated in the drum. The skins 15, 16 are secured to end rings 11, 12 welded to metal skin 1 of the shell. The transducer is supported by ring 37 bonded by rubber member 39 to ring 38 on the drum. Tow shaft 49 is pivotable in plates 47 pivotable in members 23, 24. Ballast weight 42 is removable. Compartments 17, 19 respectively contain foamed epoxy resin and lead.
Patent GB-1013503-A (GB)
Title: Improvements in or relating to spin-welding of thermoplastic articles
IPC: B29C65/06
Filed: 1963-10-23
Abstract: 1,013,503. Connecting plastic pipes. GEORG FISCHER A.G. Oct. 23, 1963 [Oct. 23, 1962 (2)], No. 41910/63. Heading F2G. To interconnect them the end faces of tubular members 1, 2 of thermoplastic material are pressed against the end-faces of an interposed annular thermoplastic member 11 which is rotated to create sufficient frictional heat between the engaged end-faces to melt and fuse the same together. The member 11 has peripheral teeth 14 which mesh with the teeth of a gear 22 on the interconnecting device. The end faces of the members 1, 2 and 11 may be flat as in Fig. 6, or conical, or the member 11 may have guiding lips 33, 34 of slightly smaller diameter than the inside of the pipe and either continuous or spaced intermittently around the circumference. The interconnecting device includes a non-driver counter-gear which engages the member 11 and co-operates with the driven gear 22 to centre it when the latter gear is rotated in a direction as at 59 in Fig. 2. The gears 22 and 24 mesh with the teeth 14 of the member 11 at positions 120 degrees angularly apart (as at 21) and the device allows the distances between their centres to be varied to suit tubular members of various sizes as at 62, 63. A clutch-type slipping brake may be incorporated in the gear 24, as shown in Fig. 6. Fig. 3 shows an alternative type of interconnecting device which may have an additional counter-gear 38. In place of the countergears rollers 45, 46 and/or stationary centring members 61, 62 on the outer members 1, 2 may be used. Fig. 9 shows a tool 103 for pressing the ends of the members 1 and 2 on to the member 11. It also shows an interposed member 93 with alternate teeth 95 which are longer than the normal teeth 14a and overlap the members 1 and 2 to centre the interposed member between them.
Patent GB-970960-A (GB)
Title: A process for the production of ionization indicator
Inventor: MAUL JOHAN ERIK
IPC: G01T1/04
Filed: 1962-11-07
Abstract: Ionisation radiation indicators comprising a resin which liberates acid under ionising radiation and an acid-base indicator, are prepared by impregnating the resin with a solution of the indicator in a medium containing a swelling agent for the resin and water or an aliphatic alcohol. The resin may be a vinyl or vinylidene chloride polymer. Specified alcohols are ethanol and ethylene glycol. Specified swelling agents are ketones and esters. In examples indicators are prepared by impregnating films of a mixture of polyvinyl chloride and polyvinyl acetate with solutions of (1) methyl orange in acetone and water, and (2) methyl orange in amyl acetate, ethanol and water. Other specified indicators are, thymol blue, methyl red, bromophenol blue bromocresol green and bromocresol purple.
Patent GB-852985-A (GB)
Title: Process for the production of boro-hydrocarbon compounds
IPC: C07F5/02
Filed: 1958-12-30
Abstract: Boron hydrocarbon compounds are produced by reacting an alkali metal or an alkaline earth metal borohydride with an unsaturated hydrocarbon in the presence of a hydrogen halide, carbon dioxide, an aliphatic carboxylic acid or boric acid, a boron halide, a monoalkyl or dialkyl boron halide, or an addition compound of a boron trihalide, a monoalkyl or a dialkyl boron halide with an ether, an amine or an alkali metal oxide.  The metal borohydride may be introduced as such or may be produced in situ, for example, from metal hydrides or metalhydrogen mixtures by reaction with boron oxide, boric acid esters, borohalides or complex alkali metal borohalides.  Low-boiling boron alkyls may be produced by heating the borohydride in a fluidised bed in a stream of the olefine to between 180 and 280 DEG C., a boron halide being added slowly.  Non-volatile boron halides are best produced in liquid phase using as solvents, water, (only with carbon dioxide) hydrocarbons. or ethers, at temperatures between 0 DEG C. and the boiling point of the solvent.
Patent GB-867934-A (GB)
Title: Improved ferrous metal and method of making it
IPC: C22C37/10
Filed: 1959-12-11
Abstract: A low-carbon high-silicon ferrous metal containing boron has a microstructure with carbon in the form of compacted graphite, and has a composition such that without boron it would solidify as a white cast iron; the metal has the following composition by weight:-C 1 to 2.5%, Si 1.5 to 3.2%, B 0.001 to 0.05%, with or without S 0 to 0.5%, and Mn with content 1.7 times S content plus 0.2%, with or without Te 0 to 0.01%, and Bi 0 to 0.02%, the total Te and/or Bi up to 0.02%, with Fe as balance.  During the production, the melt (e.g. first of low carbon steel and white cast iron) is superheated to a temperature between 2900 DEG F. and 3100 DEG F., then preferably tapped into a ladle (where the boron with or without the Te and/or Bi may be added to the first melt) at a temperature between 2750 DEG F. and 2850 DEG F. and finally poured into a mould at a temperature between 2600 DEG F. and 2800 DEG F. (preferably 2700 DEG F.).  The melt may be lanced with a dry gas (e.g. O2, N2, NH3 or A).
Patent GB-867178-A (GB)
Title: Improvements in and relating to machines for harvesting beets and like tubers
IPC: A01D25/04
Filed: 1959-12-11
Abstract: 867,178. Beet harvesters. STEKETEE, C. J. Dec. 11, 1959 [Jan 13, 1959], No. 42180/59. Class 6(3). Relates to a machine of the type described in Specification 792,902 wherein rotating discs 5 carry oppositely-inclined sets of rod-like lifting members 2, 3 which alternately press on the beet from opposite side sas the discs rotate and prise them from the ground. According to the invention each element, 2 or 3 has attached to it a resiliently-mounted rod-like member 7 or 8, this member being adjacent to the corresponding element in the opposite set. The resilient rods prevent the beets, in friable soil, being pushed too far laterally by one set of elements. The rods may be of spring steel or may be loaded by a separate spring ; alternatively they may be of rubber.