baber/WOPTO huggingface dataset:
Patent GB-1209911-A (GB)
Title: Manufacture of phosphoric acid
Inventor: WILLIAMS THOMAS ALAN
IPC: C04B7/04
Filed: 1967-02-01
Abstract: 1,209,911. Phosphoric acid; calcium sulphate hemihydrate. MARCHON PRODUCTS Ltd. 1 Feb., 1968 [1 Feb., 1967], No. 4828/67. Heading C1A. Phosphate rock is treated with sulphuric acid under conditions of temperature and ionic concentration such that gypsum is precipitated (e.g. 60-70‹ C.), the resulting slurry of gypsum in phosphoric acid being transferred to a second vessel where gypsum is recrystallized to calcium sulphate hemihydrate, the requisite rise in temperature for the recrystallization being obtained by addition of at least 93% by weight sulphuric acid. The hemihydrate produced is filtered off and may be used in producing sulphuric acid and Portland cement by the Muller-Kuhne process. Excess sulphuric acid which contaminates the phosphoric acid after removal of the CaSO 4 .¢H 2 O may be removed by addition of phosphate rock. The gypsum thereby precipitated is filtered off and recycled to the initial reaction vessel or to the recrystallization vessel. The CaSO 4 .¢H 2 O may be converted to Portland cement by mixing with coke and shale, and heating to emit SO 2  (beginning at 450‹ C.) and further heating to give cement clinker (to about 1500‹ C.). SO 2  is flushed out by a current of air, and used to make sulphuric acid.
Patent GB-904649-A (GB)
Title: Improved epoxidation of cyclododecatriene process
Filed: 1960-02-12
Abstract: The invention comprises 5,6,9,10-diepoxycyclododecene.  9,10 - epoxy-1,5-cyclododecadiene and 5,6-9,10-diepoxycyclododecene are made by reacting 1,5,9-cyclododecatriene with aqueous hydrogen peroxide having a concentration in the range of 1 to 75% wt. in proportions of from 0.5 to 1 to 5 to 1 moles of hydrogen peroxide per mole of cyclododecatriene, and 0.5 to 50 % based on the hydrogen peroxide of halogenated acetic acid or of a mixture of halogenated acetic acid and formic acid.  Reaction temperatures may be in the range of 5 DEG to 100 DEG C.  High yields of monoepoxide are obtained using mole ratios of hydrogen peroxide to cyclododecatriene of 0.5 to 1 to 3 to 1, particularly 1 to 1 to 2 to 1.  Where a larger yield of diepoxide is desirable, mole ratios of hydrogen peroxide to cyclododecatriene in the range of 2 to 1 to 5 to 1 and formic acid and/or a halogenated acetic acid in a range of 0.5 to 5% mole based on the H2O2 may be used.  In an example, the diepoxide is prepared for identification purposes by reacting cyclododecatriene with perbenzoic acid in chloroform with cooling so that the temperature does not rise above 0 DEG C. and separating the diepoxide by fractional distillation under vacuum.  Specification 849,238 is referred to.
Patent GB-997704-A (GB)
Title: Wire-changing fourdrinier machine
IPC: D21F7/00
Filed: 1962-02-09
Abstract: 997, 704. Paper-making. ENGLISH ELECTRIC CO. Ltd. (John Inglis Co. Ltd.) Feb. 9, 1962, No. 5050/62. Heading D2A. The frame assembly of a Fourdrinier machine is supported by fixed means on the drive side but by removable means on the tending side. Two carriages are mounted so that they can be moved from positions one above the other under the frame assembly to positions in the tending aisle. The lower carriage can be moved while the machine is operating, and has means for supporting a Fourdrinier wire in an open loop in the aisle. The upper carriage, when moved into the aisle extends through and beyond the wire. The lower carriage includes means for supporting part of the upper carriage, andthe two carriages are arranged so that together they support the tending side of the frame assembly while straddling the wire when the supports on that side are removed, and maintain that support while they are moved from the aisle back under the machine. As shown, the frame assembly comprises two longitudinal members 10 and 12 on the drive and tending sides supported by stands (not shown) those on the tending side being removable. A lower carriage 82 comprises beams 84 connected together by a footboard 86, through members 92 and 98, and running on flanged rollers 88 riding in tracks 90 and rollers 102. This carriage may be moved by means of the cables 112 connected to a common drive (not shown) and to depending arms 114, one arm of the cable being trained round the pulley 113. Above each beam of the lower carriage is a beam 116 of the upper carriage. This is supported at its drive-side end by plates 118 and flanged roller 120 and track 90. Also at this end is an upper roller 124 engaging the lower surface of track 126 secured to the frame members 10 and 12. The tending-side end of the beam is arranged to seat on guide bars 94 on members 92 of the lower carriage. The upper edge of the beam has flanges 130 which can run between rollers 132 and 138 mounted on the frame member 12. The upper carriage can be moved by the motor 144, which winds on to the drum 142 the cable 140, the free end of which is secured at 141. In normal operation of the machine, both carriages are, as shown, under the machine. To change the wire, the lower carriage may be run into the aisle with the machine still operating. Supports (not shown) for wire-poles are secured to the footboard 86 and to the ends of the carriage. The new wire is then draped, preferably by means of device described in Specification 997,703. The machine is then shut down and the old wire removed. The upper carriage is then moved into the aisle through the draped wire. Guide channels (not shown) for the wire poles are now laid on the table rolls and suction boxes of the machine and the ends of the wire poles laid on them. The removable supports on the tending side of the machine are then removed, and the two carrying the new wire are run back under the machine. The removable supports are then replaced, and the wire poles and guide channels are removed so that the wire goes into position on the machine.
Patent GB-333568-A (GB)
Title: Improvements in the manufacture and production of derivatives of benzanthrone
IPC: C09B3/06
Filed: 1929-02-15
Abstract: 333,568. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Feb. 15, 1929. Benzanthrone derivatives are obtained by introducing halogen, nitro and hydroxy substituents according to known methods into benzanthrone- Bz-1-alkyl ethers having the Bz-2-position free, whereby the said substituents enter the Bz-2-position. According to examples, Bz-1-methoxybenzanthrone, 6-chlor- and 8-chlor-Bz1-methoxybenzanthrones and 6-nitro-Bz1-methoxybenzanthrone are nitrated in nitrobenzene to give the corresponding Bz-2-nitro derivatives; Bz-1-methoxybenzanthrone is brominated and chlorinated in glacial acetic acid, and Bz1-ethoxy benzanthrone is chlorinated in glacial acetic acid, to give the corresponding Bz-2-halogen derivatives; and Bz-1- methoxybenzanthrone is oxidized with manganese dioxide in concentrated sulphuric acid, to give Bz1 : Bz2-dihydroxybenzanthrone which may be methylated to Bz2 : Bz2<1>-dimethoxybenzanthrone. The Bz1-methoxy benzanthrone, and its 6-chlor, 8-chlor- and 6-nitro derivatives are obtained according to Specification 291,131 and the Bz-1- ethoxy derivative is obtained by treating the Bz-1-hydroxy compound with p-toluenesulphonic acid ethyl ester.
Patent GB-881754-A (GB)
Title: Treatment of radioactive waste
IPC: G21F9/22
Filed: 1958-02-17
Abstract: 881,754. Processing radioactive waste; radiation absorbing materials. KAWAMOTO, K. Feb. 17, 1958 [Dec. 3, 1957], No. 5153/58. Class 39(4) Gamma-radiation from radioactive waste material is decreased by mixing waste material with gallium metal or a gallium containing alloy e.g. with germanium or ividium. The mixture may be mixed with water and stored in tubs formed of a concrete mixed with vermiculites which contain gallium.
Patent GB-437704-A (GB)
Title: Improvements in the manufacture and production of flexible sheet materials having a sticky surface
IPC: C09J7/38
Filed: 1934-07-09
Abstract: Flexible sheet materials having a sticky surface, e.g adhesive plasters for medical purposes, for cable insulation or for use as waterproof protective materials, fly-papers, or antiskid belts or tyres, are made by applying to the surface of the material a high molecular polymer of a purely aliphatic mono-olefine having a branched carbon chain, e.g. of isobutylene. The polymer may be mixed with linseed oil, wax and sugar, or brown coal tar pitch, or tallow and montan wax, or linseed oil and montan wax.ALSO:Flexible sheet materials having a sticky surface, e.g. for use as fly or other insect-destroying papers, are made by applying to the surface of the material a high molecular polymer of a purely aliphatic mono-olefine having a branched carbon chain, e.g. of isobutylene.  The polymer may be mixed with linseed oil, montan wax, and sugar.
Patent GB-1503261-A (GB)
Title: Evaporater
IPC: A61M16/18
Filed: 1976-02-10
Abstract: 1503261 Anaesthetic evaporator for respirators DRAGERWERK AG 10 Feb 1976 [20 Feb 1975] 05208/76 Heading A5T An anaesthetic evaporator for a respirator consists of a gas inlet 11 which divides into an evaporator chamber duct 5 and a by-pass duct 4, the two flows of the gas meeting at a junction 27 before passing to an outlet; wherein the by-pass gas path includes a regulating gap 28 formed between the facing coaxial annular surfaces of a ring 31 and a sleeve 33, the sleeve being located in a hollow, coaxial annular member 18 of higher coefficient of thermal expansion and the ring being supported by screw bolts which freely pass through bores in a housing 2 of height coefficient of thermal expansion, the arrangement being such that temperature changes are compensated for, and the gap can be altered manually using the screw bolts. A seal 37 on the upper surface of the ring directs the gas flow through the gap 28 and the sleeve is fixed to a bottom wall of the member 18 by bolts 34. The gas reaches junction 27 via duct 29. The evaporator chamber gas passes both through and around a helically coiled wick 12 in contact with a cylindrical wick 15 which reaches into the anaesthetic 7, the mixture of gas and anaesthetic from the anaesthetic chamber 6 passing up through a path 19 to a frusto-conical regulating gap 23 varied by vertical movement of a cone 20 using a hand wheel 24. The cone is non-rotatable by virtue of a keying pin 25 and the mixture meets the by-pass gas at junction 27 in a duct leading from an annular duct at the top of the regulating gap.
Patent GB-491769-A (GB)
Title: Electric incandescent lamp
IPC: F21V17/04
Filed: 1938-02-21
Abstract: 491,769. Two-part couplings. VEREINIGTE GLUHLAMPEN UND ELEKTRIZITATS AKT.-GES. Feb. 21, 1938, No. 5402. Convention date, Feb. 20, 1937. [Class 38 (i)] [Also in Group XI] In an electric incandescent lamp, intended particularly for air raid precaution purposes, the metal cap 6 has an extension which shrouds the bulb 1 and screens off the light rays, while, to provide safety in manipulation, a ring 11 of insulating-material is secured to the edge of the cap extension.
Patent GB-835359-A (GB)
Title: Machine for the forming of thermoplastic material sacks or the like
Inventor: GALIMBERTI GIAFRANCO
IPC: B31B19/10
Filed: 1958-02-20
Abstract: 835,359. Seaming non-metallic sheet materials. S.C.A.E. SOC. COSTRUZIONI APPARECCHI ELETTRONICI S.R.L. Feb. 20, 1958, No. 5509/58. Class 42 (1). A machine for welding thermoplastic tubular strip for making bags comprises an intermittently rotated drum 7 receiving material from a continuously rotated drum 4, a reciprocable welding member 44 arranged to contact the material in the drum 7 when the drum is stationary and rollers 8, 9 for taking up the slack material when the drum 7 is stationary and returning it when the drum 7 starts to rotate again. As shown in Fig. 3, the welding member 44 is mounted in slides 26 which are reciprocated vertically by means of contact rollers 27 which contact cams 22. One of the slides 26 is provided with a rack 35 which contacts a gear 37 fast with the drum 7 as the slide is lowered to stop the drum 7 while welding takes place. The drum 7 is driven from the drum 4 by means of a chain 65b which passes over pulleys 67, 68. When the drum 7 is stationary the rotation of drum 4 causes the pulley 68 to be raised. The pulley 68 is mounted on an arm 71 connected by gearing 74 to an arm 76 connected by a link 55 to the arm 54 carrying the rollers 8, 9. As the pulley 68 is raised it causes the pulleys 8, 9 to be moved to take up the slack material, the pulleys 8, 9 being returned to their original position as the pulley 68 is lowered when the drum 7 is allowed to rotate by the raising of the slides 26 when the gear 37 is released by the rack 35. The speed of the drum 4 is controlled by a device 60 incorporating a photo-electric cell which corrects the relative position of the welding with respect to a stamping mark on the material. The material passes from the drum 7 to a cutting device 10.
Patent GB-678256-A (GB)
Title: Improvements in or relating to a lens chuck
Inventor: LONG ELI MAYNARD
IPC: B24B13/005
Filed: 1951-03-07
Abstract: 678,256. Sockets. SHURON OPTICAL CO., Inc., March 7, 1951, No. 5513/51. Class 83 (iii). [Also in Group XXIII] A block 95, to which a lens blank is secured by pitch for a grinding operation, has a square shank 96 to fit a slot 87 in a rocker member 78 which has a cylindrical surface to engage a complementary surface 76 in the body 22 of a chuck so that the block may be adjustably inclined about two perpendicular axes with respect to the body. Screws 84 acting through pads clamp the rocker member while screws 90 acting through a plate 88 clamp the block. A spring 94 facilitates removal of the latter from the member 78. The position of the block in relation to the chuck axis is determined by the axial position of each of four pins 53 slidably mounted in the chuck body and controlled by the setting of two scales 31, 49 (see Group XXIII). The member 78 has a concave chamfer 80 to provide clearance for the block 95. If convex 'surfaces are to be treated, a modified member 78 having chamfered corners to accommodate a convex block is used.
Patent GB-1535616-A (GB)
Title: Apparatus for tempering glass sheets
IPC: C03B35/16
Filed: 1977-02-10
Abstract: 1535616 Bending and tempering glass sheets LIBBEY-OWENS-FORD CO 10 Feb 1977 [25 Feb 1976] 05532/77 Heading C1M In apparatus in which a glass sheet S is conveyed (by rollers 23, 40, 90) from a heating furnace 12 to a chilling zone 13 and then to cooling zone 15, the sheet S being bent in zone 13 by application of chilling gas below the sheet at a higher pressure than above the sheet (to cool the bottom surface faster), upward movement of the sheet is limited by rolls 41 mounted above the sheet, each roll comprising a central (sheet-contacting) portion 45 parallel to rolls 40, opposite co-axial end portions 46, 47 and inclined portions 48, 49. The rolls preferably comprise a sleeve 51 rotatable about a fixed core 50, the sleeve 51 being rotated synchronously with rolls 40 to continue the advance of the sheets.
Patent GB-577001-A (GB)
Title: Improvements in and relating to computing mechanism for the correction of gun sights
IPC: F41G5/18
Filed: 1940-03-28
Abstract: 577,001. Aircraft gun sights. BOULTON PAUL AIRCRAFT, Ltd., and SAYERS, W. H. March 28, 1940, No. 5565. [Class 92 (ii)] [Also in Group XIX] Mechanism for computing the azimuth correction for projectile air resistance to be applied to an aircraft gun sight in accordance with the speed Vo of the aircraft, the speed VE of the target, the relative speed VR, the vacuum time of flight TO and time lag TL of the projectile, comprises a base 3, a fixed guide 4 and a slidable guide 5 normal to the base, and a slotted link 1 hinged at 2 to the base and engaging sliders 6, 7 on the guides, the distance between the slider 7 and a further slider 8 being a measure of the azimuthal correction which is directly applied to a sight, the base of which represents the muzzle velocity VM of the projectile. It is shown in the Specification that when VE=VO (TO/TO+TL) there is no azimuthal allowance necessary since the projectile moves along the target path the same distance as the target. For any other conditions, VE=Vo(TO/TO+TL) +VR<1>, where VR<1> is the difference between the actual value of VE and the " no allowance " value. Further, it is shown that a speed VRO in vacuo requires the same correction as VR<1> if VRO=VR<1> (TO+TL/TO) and the apparatus calculates this value VRO when settings TL/TO, Vo, VE are applied to the sliding parts as shown.
Patent GB-781070-A (GB)
Title: Improvements in or relating to alloy heating processes
Inventor: DOVEY DOUGLAS MARSHALL
IPC: C21D1/76
Filed: 1954-02-25
Abstract: A process of heating an article of an alloy having at least one readily oxidized constituent comprises a modification of the method claimed in claim 1 of the parent Specification in which the article is placed in a container capable of withstanding the temperature used and having at least the interior composed of a metallic material free from any metals which form oxides capable of contaminating the gaseous atmosphere, and heating the container and article while maintaining a continuous flow of a dry reducing gas, consisting wholly or partly of hydrogen, round the article.  The container may be of mild steel and may be enclosed in a second container, the atmosphere escaping from the first container forming a reducing atmosphere within the second container.  The process may be bright anealing or brazing and the atmosphere may be cracked ammonia.
Patent GB-1438246-A (GB)
Title: Purification of chlorinated hydrocarbons contaminated with bromo  hydrocarbons
IPC: C07C17/395
Filed: 1974-02-08
Abstract: 1438246 Removal of brominated contaminants from chlorohydrocarbons IMPERIAL CHEMICAL INDUSTRIES Ltd 21 Jan 1975 [8 Feb 1974] 05830/74 Heading C2C Chlorinated hydrocarbons contaminated with one or more bromohydrocarbons optionally also containing chlorine are purified by contacting in the vapour phase with active carbon, aluminium oxide or an oxide of chromium and subsequently separating from the chlorinated hydrocarbon, at least in part, the newly formed product of the contact. The chlorohydrocarbon preferably has 1-6 C atoms, and the process is particularly useful for C 1-2  compounds, e.g. 1,2- dichloroethane, CCl 4  and vinyl chloride. The bromo-contaminant may form 0À1-20 parts by weight to the impure mixture and the contacting is advantageously performed at 50-600‹ C., especially 100-300‹ C. In the example chloroform (b.pt. 61‹ C.) contaminated with 2093 p.p.m. CH 2 ClBr (b.pt. 69‹ C.) is contacted with active carbon at 200‹ C. to give as new contaminants CHCl 2 Br (b.pt. 89‹ C.) and CH 2 Cl 2  (b.pt. 40‹ C.) which are then easily removed from the chloroform by fractional distillation.
Patent GB-1170297-A (GB)
Title: Improvements in or relating to Steering Systems for Marine Vessels
Inventor: CORLETT EWAN CHRISTIAN BREW
IPC: B63H25/38
Filed: 1967-02-07
Abstract: 1,170,297. Steering watercraft; bows. HYDROCONIC Ltd. 7 May, 1968 [7 Feb., 1967], No. 5893/67. Headings B7A, B7S and B7V. A marine vessel has a gap 20 across the hull immediately aft of a bow rudder 18. The bow rudder 18 is mounted by vertical stock 19 on bow 16. Keel 12 has a projection 11 with a limb 13 which extends around rudder 18 and has a plate portion 21 fixed to the bow. Gap 20 is formed aft of the rudder between bow 16 and the limb across which a strengthening strut 22 is provided. The rudder may be operated by a three-position ram controlled by push-buttons.
Patent GB-372449-A (GB)
Title: Machine for the manufacture of prismatic trenails, pegs, or plugs in cabinet making and joinery
IPC: B27M3/28
Filed: 1931-02-25
Abstract: 372,449. Machinery guards. PARSUS, H., 106, Avenue de Fontainbleau, Kremlin- Bicetre, Seine, France. Feb. 25, 1931, No. 5903. [Class 80 (iv).] In a machine for making tapered wooden trenails, pegs or plugs by pushing blanks through a nest 18 of planing knives arranged in the polygonal configuration required, the knives are surrounded by a set of plates 54 urged by springs 58 so as to maintain a central opening which fits the knives and to exclude chips from the working parts.
Patent GB-1039611-A (GB)
Title: Improved beam construction
Inventor: MOON ANNA
IPC: E04C3/04
Filed: 1963-02-14
Abstract: 1,039,611. Lattice beams. BROCKHOUSE STEEL STRUCTURES Ltd. Feb. 12, 1964 [Feb. 14, 1963], No. 5947/63. Heading E1K. The web of a lattice beam comprises separate bars 18 each bent at an angle to form a tension and compression member the bars at the ends of the beam having the tension member T longer than the compression member C. The other bars may be similar. The upper chord is of inverted T or inverted V cross-section and the lower chord of rectangular cross-section. The beam rests on stanchions by means of cross bars 13.
Patent GB-1130808-A (GB)
Title: Improvements in or relating to gun turrets
IPC: F41A27/16
Filed: 1967-02-08
Abstract: 1,130,808. Mounting turrets on armoured vehicles. KELLER & KNAPPICH G.m.b.H. 8 Feb., 1967 [3 March, 1966], No. 6048/67. Heading F3C. [Also in Division F2] An armoured vehicle has a gun turret 12 which is rotatably mounted as-by ball bearings on a non-rotatable assembly, this assembly being connected to the vehicle roof 1 through a plurality of bolts 3 which are supported from the roof 1 by rubber or the like bush assemblies 4, 5, 6. The assemblies each comprise inner and outer bushes 4, 6 of steel and a ring 5 of rubber or the like interposed and vulcanized therebetween. The ring 5 may have a convex or concave outer surface when observed in longitudinal section.
Patent GB-1028422-A (GB)
Title: Method for producing monocrystalline beryllia
IPC: C01F3/00
Filed: 1963-02-14
Abstract: Monocrystalline fibres and/or platelets are produced by reacting beryllia at a temperature of at least 1200 DEG  C. with water vapour and condensing the resultant vapour on a beryllia seed surface.  A carrier gas, for example nitrogen, helium, argon or krypton, may be used.  In the embodiment of the drawing (not shown), the source of beryllia is either tube 11 or beryllia placed in tube 11.  Tube 11 is heated, for example, by induction coil 18.  Water vapour with or without a carrier gas is passed in by tube 12, and fibres and platelets of beryllia grow in tube 20.
Patent GB-189040-A (GB)
Title: Improvements in locking devices for roll-up shutters, lattices and the like
IPC: E06B9/80
Filed: 1922-03-01
Abstract: 189,040. Gibson, W. P. March 1, 1922. Hasp fastenings; sliding bolts; multiple fastenings for roll-up shutters.-A roll-up shutter, lathshutter, lattice or the like, has pivoted on or near its bottom rail at 4 a bar 3. When the shutter is down; the bar 3 is turned to a vertical position and is secured to the support or guide 2 by a padlock 6 passing through eyes in the bar and in a member secured to the support 2. This secures the shutter. For rolling up the shutter, the bar 3 is turned about its pivot 4 into a horizontal position 8 shown by dotted lines in Fig. 1. For further security, the bar 3 may operate a sliding bolt 9 by means of a toggle 13, 15, the link 13 of which is rigidly connected to the bar 3. Or it may rotate a cam to engage a suitable recess in the support or guide 2.