baber/WOPTO huggingface dataset:
Patent GB-834614-A (GB)
Title: Process of producing crystalline ammonium bifluoride
Inventor: RIEDEL HANS JOACHIM
IPC: C01C1/16
Filed: 1957-12-31
Abstract: Crystalline, ammonium bifluoride is prepared by treating an aqueous solution of industrial fluosilicic acid with gaseous ammonia separating the resultant precipitated silicic acid from the solution and thereafter concentrating the solution by heating until the boiling-point of the melt produced is higher than 160 DEG  C., and cooling the resultant melt to obtain a crude salt having a maximum water content of 5% wt. but preferably not more than 3% wt.  In operation, an aqueous solution of fluosilicic acid is contacted with gaseous ammonia, the temperature of the exothermic reaction being reduced to 40 DEG  C. by cooling.  The precipitated silicic acid is removed by filtrating and the resulting aqueous ammoniacal solution of ammonium fluoride is concentrated by heating until the temperature of the melt formed thereby has a b.pt. of, say, 160-170 DEG  C.  The melt thus obtained is allowed to cool, preferably with agitation to break up the solidifying melt into small pieces and to increase the solidifying velocity, to yield a crude salt having a maximum water content of 5%, preferably below 3% wt.  Alternatively, the solution may be distilled until the b.pt. of the melt is 170-200 DEG  C., the loss of bifluoride being prevented by use of a packed column which is operated at a temperature interval of 105 DEG  C. at the top of the column to 200 DEG  C. at the bottom, the resultant melt being thereafter cooled as before.  The crude salt obtained by either method may be recrystallized by dissolving in hot water at a temperature of preferably 70-80 DEG  C. in proportion 2:1 by wt., the solution being thereafter freed from undissolved impurities by filtration and then cooled slowly to ambient temperature and thence to 0 DEG  C. by cooling in ice to yield large, elongated prismatic crystals of pure nondeliquescent ammonium bifluoride. Alternatively, the solution may be cooled to 0 DEG  C. rapidly with stirring when fine pure crystalline needles are obtained.  The crystals are separated by filtration or centrifugation, washed with ice water and dried at 70-80 DEG  C.  The motherliquor may be recycled to the packed column for concentration whereafter cooling yields a second crop of pure crystals or, together with fresh fluosilicic acid may be recycled for use in the preparation of the initial ammoniacal solution of ammonium fluoride.  Mother liquor recovered from a second crop of pure crystals produced after concentration and cooling of the oroginal mother liquor is not recycled to the packed column but may be returned, if required, together with fresh fluosilicic acid, to the initial stage.
Patent GB-1510907-A (GB)
Title: Chrominance signal livel controlling system
IPC: H04N9/00
Filed: 1976-10-01
Abstract: 1510907 Television systems SONY CORP 1 Oct 1976 [1 Oct 1975] 40770/76 Heading H4F In a system to which either of two colour signals is selectively applied the chrominance signal level of a first colour signal having a colour burst in the horizontal blanking interval, e.g. a PAL signal, or of a second signal having an unmodulated carrier in the blanking interval, e.g. a S.E.C.A.M. signal, is controlled in response to the level of a signal obtained by gating the burst or the unmodulated carrier from the respective signal. When the first signal is applied a gating pulse Pgl, Fig. 4, is generated in response to the horizontal sync. pulse Ph so that the gate passes the burst Sb, irrespective of jitter. When the second signal is applied a gating pulse Pg2 is generated near the end of the blanking interval so that the gate passes a portion Sf3 of the unmodulated carrier. The gated signals control an amplifier fed with the chrominance signal. The system may be employed in a video tape recorder or reproducer.
Patent GB-1253587-A (GB)
Title: Apparatus and method for detecting the fuel injection timing of an internal combustion engine
IPC: F02B1/04
Filed: 1969-08-15
Abstract: 1,253,587. Testing fuel injection systems. TOYOTA CHUO KENKYUSHO K.K. Aug. 15, 1969 [Aug.20, 1968], No.40825/69. Heading F1B. A method of dynamically detecting the fuel injection timing of an I.C. engine comprises generating an electric signal responsive to the change in stress or strain of the injector valve biasing device when the injector valve leaves its seat to inject fuel into the engine, feeding the signal to a stroboscopic lamp to illuminate a crank angle scale rotated by the engine crankshaft, and reading the injection timing on the scale in relation to a fixed index mask. The electric signal is generated by a wire or semi-conductor strain gauge (or a Piezo-electric stress gauge) cemented to the underside of an abutment 16a for the injector valve spring 15. The electrical connection 22 to the strain gauge is passed between coils of the spring 15 as shown. The strain gauge may instead be located on the upper surface of the upper spring abutment 16b. Preferably, the strain gauge comprises two strain gauge elements S, with their input terminals connected via small coils and respective leads 19<SP>1</SP>, 19<SP>11</SP> to opposite sides of a battery 33 and with their output terminals connected via another small coil to a common output lead 19. The electrical pulses are fed through a pulse shaper 35, in which they are converted to rectangular pulses of constant amplitude and width which are used for triggering a stroboscopic lamp. It is stated to be known to measure by means of a photo-transistor the variation of intensity of a light beam intercepted by a rod which is lifted with the injector valve, or to measure the variation of capacitance of a capacitor embodying the rod.
Patent GB-1255345-A (GB)
Title: 3-(3-OXO-11beta13beta-DIALKYL-17beta-HYDROXYGON-4-EN-17alpha-YL) PROPIONIC ACID gamma-LACTONE
Inventor: BARAN JOHN STANISLAUS
IPC: C07J19/00
Filed: 1969-08-15
Abstract: 1,255,345. 11-Alkyl-steroids. G.D.SEARLE & CO. 15 Aug., 1969, No. 40920/69. Heading C2U. Novel steroids of the formulµ (wherein R and R<SP>1</SP> are each C 1 _ 7  alkyl and M is an alkali metal cation, one equivalent of an alkaline earth metal cation or an ammonium radical) are prepared by isomerization of the corresponding A<SP>5</SP>- or #<SP>5(10)</SP>-steroid lactones (prepared in turn from the corresponding 3- ketals and the corresponding  # <SP>2,5(10)</SP>-3-enol ethers respectively) and, when required, conversion of the lactones of the salts of the hydroxyacids by standard procedures. Starting materials are prepared by reacting steroids of the formula (where R<SP>11</SP> is H, C 1 _ 7  alkyl or C 2 _ 8  alkanoyl) as their Grignard derivatives with C0 2  to give the corresponding propiolic acid derivatives, reducing these to the saturated hydroxy-acids (isolated as their lactones), Birch reducing these to the corresponding 2,5(10)-dienes and hydrolysing these to the required  # <SP>5(10)</SP> -starting materials which need not be isolated, more vigorous hydrolysis leading directly to the #4-3-ones of the invention; or by subjecting steroids of the formula to similar conversion to hydroxy-acids via propiolic acids after protection of the 3-keto group as a ketal, followed by removal of the protecting group to give the required #5-3-keto starting materials which are not actually isolated but which are isomerized directly to novel products of the invention. If products of these processes are racemates, the starting materials being racemates, they may be resolved by standard procedures.
Patent GB-1420343-A (GB)
Title: Torque-responsive slip clutch
IPC: F16D7/02
Filed: 1973-08-30
Abstract: 1420343 Slip couplings BLACK & DECKER MFG CO 30 Aug 1973 [30 Aug 1972] 40924/73 Heading F2U An overload slip coupling for a portable power-operated hedge-trimmer comprises a plurality of leaf-springs 56 prestressed at least to their elastic limit between a driving pinion 28 and a driven member 44. As shown the ends of the springs 56 engage an internal cylindrical surface 32 of the pinion 28 whilst the centres of the springs engage an external cylindrical surface 48 of the member 44. The driven member 44 is journalled on an axially extending annular flange 46 of the pinion 28. In Figs. 4 and 5 (not shown) the leaf springs are carried by recesses. (155) in the driving pinion.
Patent GB-1129382-A (GB)
Title: 6,6-ethylene-19-nortestosterones
IPC: C07J53/00
Filed: 1966-09-13
Abstract: 1,129,382. 6,6-Ethylene-steroids. SMITH KLINE & FRENCH LABORATORIES. 13 Sept., 1966 [17 Sept., 1965], No. 40953/66. Heading C2U. The invention comprises compounds of formula wherein R is hydrogen, cyclopenten-1-yl, cyclohexen-1-yl, 11-ethoxy-cyclopentyl, 1<SP>1</SP>-ethoxycyclohexyl, 21-tetrahydropyranyl or C 2-10  acyl, and R 1  is hydrogen, methyl, ethyl, vinyl, ethynyl, chloroethynyl, bromoethynyl, 1-propynyl or 3,3,3-trifluoro-1-propynyl, and their preparation by reaction of a 17#-acetoxy-6 unsubstituted analogue with trimethyl orthoformate to give the 3-methoxy-3,5-diene, condensing this with #-acetoxyethyl-mercuric acetate to give the 3-methoxy-6-(#-acetoxy)-ethyl-3, 5 diene, hydrolysing to the 3-methoxy-17#- hydroxy.6.(#-hydrozyethyl)-3,5 diene, and cyclizing, followed if desired by (a) total or partial hydrogenation of a 17α-ethynyl compound, or (b) 17-etherification or esterification. The compounds of the invention have anabolic and androgenic acitivity and may be used in pharmaceutical compositions in combination with a carrier, for example in forms suitable for oral or parenteral administration Reference has been directed by the. Comptroller to Specification 1,078,163.
Patent GB-1524388-A (GB)
Title: Extruding hollow glass bodies
IPC: B29C48/09
Filed: 1975-10-07
Abstract: 1524388 Multi-channelled hollow bodies PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 7 Oct 1975 [10 Oct 1974] 40989/75 Heading C1M A hollow glass body having a plurality of longitudinal channels is made by extruding heat softened glass through a die to give a multichannelled product, by division and recombination of the glass within the die, which is then drawn to size. The figures of the drawing (not shown) depict the input end of the die, with a plurality of holes for separating the glass mass, and the output end where the separate streams are recombined to form the final channelled body.
Patent GB-880970-A (GB)
Title: Making tubes of plastic material
IPC: B29C48/151
Filed: 1959-12-04
Abstract: 880,970. Moulding reinforced tubes. HONNINGSTAD, B., and SKANSEN, G. Dec. 4, 1959 [Dec. 5, 1958], No. 41345/59. Class 87(2). A method of continuously making fibre reinforced resin tubes comprises continuously extruding a mandrel 10 of a fusible alloy, applying the resin impregnated fibres to the mandrel 10 whilst it is moving in an axial direction, curing the resin and continuously removing the alloy mandrel 10 by heating. In Fig. 1, the mandrel 10 is extruded by a pump 17, from a crucible 14, through a cooled orifice 12 and is wrapped with resin impregnated glass tape 25. Either the tape 25 may revolve about the mandrel or the apparatus and hence the mandrel may be caused to rotate and thus lay the tape helically. In Fig. 2, a mixture of cut glass fibres and resin is extruded around the extruding mandrel to form a tube 29. Fig. 4, shows an automatically operated plant wherein the extruded mandrel 10 is caused to rotate, glass fibre rovings are pulled from the centre of spools 41 and pass through impregnating and roller devises 39 before being applied to the mandrel 10. The devices 39 are supplied with resin from container 42 which also supply a device 46 to coat the tubes exterior. The tube 24 then passes through an induction heater 31<SP>1</SP> which heats the mandrel 10 and through an infra-red radiation heater 30 to cure the tube. The mandrel is then melted by a further induction heater 31 and may be returned to the crucible 14 either by means of an interior funnel and tube or simply by gravity through its hollow centre. The top of the advancing tube 24<SP>1</SP> then contacts a pivoted gripping mechanism 51 which rises against a weight 57 and causes a knife 58 to sever the tube and discharge it to a shoot 61 and conveyer 62. A two layer tube with either an inner or outer thermoplastic skin may be made.
Patent GB-1037606-A (GB)
Title: Improvements in and relating to articulated supports
Inventor: BRADSHAW ARTHUR JEFFREY
IPC: F16L3/16
Filed: 1964-10-09
Abstract: 1,037,606. Pipe supports; pipe connections. NUCLEAR POWER PLANT CO. Ltd., and A.E.I. JOHN THOMPSON NUCLEAR ENERGY CO. Ltd., [trading as NUCLEAR POWER GROUP]. July 13, 1965 [Oct. 9, 1964], No. 41411/64. Headings F2G and F2P. In an articulated support between two members 1, 3 which have oppositely disposed plane, annular, supporting faces 9, 11 spaced apart to provide an annular space between the faces, the space contains a plurality of similar, wedgeshaped supporting blocks 12 arranged in a single layer between the faces 9, 11 and extending circumferentially around the space in a row. The layer of blocks comprises two opposing sets of an equal number of blocks, the blocks of each set being interposed between and being in wedging engagement with the blocks of the other set, one set of blocks providing supporting contact uniformly over the face 9 and other set of blocks providing supporting contact uniformly over the face 11. The member 3 consists of a tube 4, to which is joined a resilient tube 18 bearing  against a spherical surface of the flanged portion of the tube 1 to form a gas seal, and rings 5, 6, the ring 5 being provided with a thread 7 for screwed connection with a stub pipe in a gas baffle dome of a nuclear reactor.
Patent GB-1020000-A (GB)
Title: Improvements in or relating to apparatus for producing a liquid barrier
IPC: E21F5/14
Filed: 1964-10-14
Abstract: 1,020,000. Forming liquid barriers in mines. FLEXADUX PLASTICS Ltd. Oct. 14, 1964 [Oct. 18, 1963], No. 41972/64. Heading A5A. A device for forming a liquid barrier in the event of an explosion in a mine gallery comprises an open trough 1 of extinguishing fluid supported transversely across the gallery on supports 2 and 3 and having one or more ropes or cords 4 attached thereto on or near its bottom and passing around one of the longer sides of the trough and fastened to the roof of the gallery at point(s) above the trough whereby a lateral movement of the trough causes the rope(s) to tip the trough and empty it quickly Preferably, the trough is constructed of a light, rigid material e.g. plastic and the rope(s) are attached to points on the bottom of the trough along its central axis.
Patent GB-1442439-A (GB)
Title: Method of making l-aspartic acid from fumaric acid
IPC: C12R1/38
Filed: 1973-09-06
Abstract: 1442439 L-aspartic acid LES PRODUITS ORGANIQUES DU SANTERRE ORSAN 6 Sept 1973 [7 Sept 1972 8 Dec 1972] 42047/73 Heading C2C L-aspartic acid is made by making a culture of a strain of Pseudomonacea, viz. ATCC 21973, introducing fumaric acid or a salt thereof into the fermented medium and carrying out a bioconversion without aeration at a pH of 6-12 and at a temperature of 20-60‹ C.
Patent GB-935510-A (GB)
Title: Improvements in or relating to nuclear reactors and to fuel elements therefor
Inventor: FAIRHURST WILLIAM
IPC: G21C21/12
Filed: 1960-12-08
Abstract: 935,510. Nuclear fuel elements. UNITEDKINGDOM ATOMIC ENERGY AUTHORITY. Nov. 21, 1961 [Dec. 8, 1960 (2)], Nos. 42230/60 and 42231/60. Class 39 (4). A gas cooled, graphite moderated nuclear reactor whose operating temperature distribution over the core is in the range 140‹ to 470‹ C. has those fuel elements in the cooler regions of the core (140‹ to 350‹ C.) having sheaths with a fine grain structure to favour ductility and thereby discourage cavitation failures and those fuel elements in the hotter regions of the core (350‹ to 470‹ C.) having sheaths with a structure which is relatively stable in grain size whereby the formation of a large grain structure favourable to leak paths through the walls of the sheath is discouraged. The fuel elements each comprise a fuel member of uranium or uranium base alloy and a magnesium base alloy sheath of fine grain size, the latter being pressurized at a temperature such that uncontrolled grain growth of the sheath material does not occur, viz, in the region of 250 ‹ C., into grooves in the fuel member so as to prevent relative longitudinal movement between the fuel member and the sheath. Annealing is effected after cooling, in the case of the elements for the cooler regions, at about 380‹ to 390 ‹ C., thereby effecting recrystallization of the sheath material to a fine grain structure and, in the case of the elements for the hotter regions, at about 515‹ Œ 10‹ C., thereby effecting recrystallization of the sheath material to a structure which is relatively stable in grain size in the operating temperature range of . those elements. If having been subjected to cold working during their production, the magnesium alloy sheaths for the hotter region elements are preferably pre-annealed, prior to assembly with the fuel members, at about 500‹ C. Specifications 806,971, 812,123 and 863,492 are referred to.
Patent GB-1036291-A (GB)
Title: Improvements in or relating to the manufacture of large containers
Inventor: RUBO ERNST
IPC: B65D90/08
Filed: 1963-10-25
Abstract: 1,036,291. Making containers, welding by fusion, jointing. PINTSCH BAMAG A.G. Oct. 25, 1963 [Oct. 27, 1962], No. 42289/63. Headings B3A, B3R and B3V. A method of making a container, e.g. of a spherical shape, provided with at least one support and having walls which consist of a plurality of sheet metal layers assembled from individual shells by welding and which are erected from the inside outwardly comprises mounting on the inner layer partial shells which constitute portions of the remaining layers and which provide a support contact region and thereupon a support and thereafter welding the respective layers of the adjacent shell sections together. A shell layer assembly 1, 2, 3, 5 on which is attached a support 6 each layer having chamfered edges, is initially secured to the inner layer 4 by cementing with or without an intermediate metal separating strip 13 which may be a continuous thin perforated sheet. Adjacent layers are built up on the layer 4 the layers section being positioned and held by a butt welded flat or semi-tubular sectioned steel support prior to welding the chamfered edges thereof together. Sheet metal strips are placed under the welding edges to prevent an upper layer from being welded to a lower layer. Alternatively angle brackets 30, 28, Fig. 4 (not shown), coupled by a nut and bolt may be welded or cemented to layers 31, 29 to facilitate positioning of the layer 29 prior to welding it to its adjacent layers. In another example shaped plates 20 to 24, Fig. 3 (not shown), are positioned adjacent to one another about a supportassembly on the inner layer assembly and held in position by straps 33 and straps 26 which are located in apertures formed by recesses along the edges of the plates and are welded to the lower layer. The locating members are subsequently removed after welding by grinding, chiselling or rabbet-planing and where necessary the apertures are closed by closures welded thereto. In a further example one layer may be temporarily clamped to a lower layer by a conical, elongated or H-shaped element (not shown) having chamfered edges which cooperate with a complementary recess in the upper layer, the element being welded to the lower layer. Bolts in conjunction with nuts welded temporarily to the outer side of the inner shell may also be used to locate a subassembly of layers or an individual layer on the shell.
Patent GB-1534633-A (GB)
Title: Wall-mountable umbrella holder
IPC: A47G25/12
Filed: 1977-10-11
Abstract: 1534633 Umbrella holders LEE HON CORP 11 Oct 1977 42296/77 Heading A4U A wall-mountable umbrella holder comprises a casing 1 having detachably connected to its lower end a perforated member 13 removably carrying a cylindrical member 2 containing a bladed element 22 whereby water from an umbrella drains through bottom perforations 131 into the member 2 and is prevented from splashing, e.g. when the holder is on a vehicle, by the element 22. Perforations 137 provide ventilation as does grooves 135 and channels 136. The casing may comprise telescopically engaging parts 11, 12, and it may be semi-circular, triangular or rectangular in cross-section, and it may have pressure-sensitive adhesive applied to a flat face thereof, the adhesive being covered by a sheet of paper which is removed to permit the holder to be adhered to a surface. The inside wall of the holder is grooved at 113. Fixing lugs 122 may be provided. The member 2 may be transparent.
Patent GB-967389-A (GB)
Title: Improvements in or relating to framework construction members
IPC: E04B1/58
Filed: 1961-11-27
Abstract: 967,389. Joining structural members. SAI KHEONG KWAN. Nov. 27, 1962 [Nov. 27, 1961], No. 42319/61. Heading E1K. A channel member has in one or both flanges a slot 2a, 2e, 2c having the shape of the cross-section of the member to allow a second similar member to be inserted into this slot, in constructing a framework, and the members also have slots 4, 5 so that the second member can be inserted until the slots 4, 5 in the second member register with the slot 2a, 2e, 2c and the members can then be moved relatively to interlock. The slot 2a, 2e, 2c is extended by parts 2b 2d so that the second member can be inserted in inverted position. The slots 6, 7 allow the member to be cut into shorter lengths.
Patent GB-1195248-A (GB)
Title: Process for Dimerization, Codimerization, Polymerization and Copolymerization of Mono-Olefines
IPC: C07C1/00
Filed: 1967-09-18
Abstract: 1,195,248. Oligomerizing olefins. NORWAY, CENTRAL INSTITUTE FOR INDUSTRIAL RESEARCH. 18 Sept., 1967 [24 Sept., 1966], No. 42466/67. Heading C5E. C 4-30  mono-olefins are obtained by oligomerizing or co-oligomerizing C 2-15  mono-olefins in the presence of a catalyst system comprising: (1) One or more compounds of formula M<SP>0</SP>L n  or M<SP>1</SP>XL m , where M‹ and M<SP>1</SP> are Group VIII metals in zero-valent or mono-valent state respectively, X is an acid equivalent or a negatively charged organic residue, the L groups are the same or different neutral groups selected from CO, NO and mono-, bi- or polyfunctional ligands co-ordinately bonded to the metal, n is an integer from 1 to 6 and m is an integer from 1 to 5; and (2) a Lewis acid which is a compound of a Group IIa or IIIa metal (Mendeleev). The catalyst system may additionally contain (3) a Lewis base which is a compound of a Group Vb or VIb element, and which may be present as an addition compound with one of the other catalyst components. The Lewis acid is suitably of the type where R is H or a C 1-20  aliphatic or aromatic hydrocarbon residue, Y is a monobasic acid residue, a is 1-2 and b is 0-2. Many such catalyst systems are given in examples illustrating the oligomerization of ethylene and propylene and the co-oligomerization of ethylene/propylene and ethylene/butene-2. The products are mixtures of mainly beta- and gamma-olefins in which dimers predominate.