baber/WOPTO huggingface dataset:
Patent GB-736386-A (GB)
Title: Process for recovering iodine from iodine-containing aqueous glycol solutions
Filed: 1953-09-14
Abstract: In the production of glycol by oxidizing ethylene in aqueous phase using iodine as oxygen-transmitting agent, iodine is recovered from the reaction mixture obtained, by treating with an oxidizing agent having a negative redox potential greater than that corresponding to the reaction 2I-=I2+2e-, where E0=-0.535, whereby iodine, present as elemental iodine, hydrogen iodide, or bound in complex compounds, is precipitated. Oxidizing agents may be chlorine, nitrogen oxides which may be admixed with oxygen, potassium permanganate, hydrogen peroxide, ferric chloride, hypochlorous acid, sodium hypochlorite, or chromium trioxide, or may be liberated by acid reaction, e.g. on sodium nitrite with or without oxygen addition.  The reaction mixture may be stirred during oxidizing agent addition.  After filtering off the precipitated iodine, iodine remaining in the reaction mixture as glycol iodohydrin or ethylene di-iodide may be recovered by hydrolysing to hydrogen iodide, e.g. by making alkaline with NaOH and heating on a water bath, say at 70-80 DEG  C., for 2-3 hours, and then adding more oxidizing agent after acidifying with dilute sulphuric acid.ALSO:In the production of glycol by oxidizing ethylene in aqueous phase using iodine as oxygen-transmitting agent, iodine is recovered from the reaction mixture obtained, by treating with an oxidizing agent having a negative redox potential greater than that corresponding to the reaction 21- = I2 + 2e-, where E0 = -0.535, whereby iodine, present as elemental iodine, hydrogen iodide, or bound in complex compounds, is precipitated. Oxidizing agents may be chlorine, nitrogen oxides which may be admixed with oxygen, potassium permanganate, hydrogen peroxide, ferric chloride, hypochlorous acid, sodium hypochlorite, or chromium trioxide, or may be liberated by acid reaction, e.g. on sodium nitrite with or without oxygen addition.  The reaction mixture may be stirred during oxidizing agent addition.  After filtering off the precipitated iodine, iodine remaining in the reaction mixture as glycol iodohydrin or ethylene di-iodide may be recovered by hydrolysing to hydrogen iodide, e.g. by making alkaline with NaOH and heating on a water bath, say at 70-80 DEG  C., for 2-3 hours and then adding more oxidizing agent after acidifying with dilute sulphuric acid.
Patent GB-718608-A (GB)
Title: Improvements in or relating to props especially pit props
IPC: E21D15/38
Filed: 1951-10-30
Abstract: 718,608. Pit props. EGGEMANN, W., CAMPENHAUSEN, E. VON, [trading as SCHWARZ ZOMM.-GES, H.]. Oct. 30, 1951 [Oct. 1, 1948], No. 25293/51. Class 20 (2) The upper part 11, Figs. 1, 2, of a telescopic pit prop is held frictionally in relation to the lower part 10 by means of flat bars 12 (which may be tapered longitudinally) secured to the lower end of the upper part 11 and extending symmetrically up' the sides thereof to be located by but not secured to the prop head 14, the edges of the bars 12 being engaged by pressure blocks 16 embraced by a movable wedge collar 17 on the lower part 10, the arrangement being such that the load on the prop places the upper part 11 in compression and the bars 12 under tension. The bars 12 may be welded or pivotally connected to the lower end of the prop part 11 and are prevented from bending outwards by projections 13 on the head 14, clearance being left between the head 14 and the upper ends of the bars 12 to ensure that the latter are not compressively loaded and only move downwards by being drawn down as the upper prop part 11 moves down. The bars 12 instead of being flat, may be of prismatic or polygonal cross section and may be engaged frictionally at any suitable surface or alternatively they may be built up of laminae which are pressed against a fixed surface on the locking means or on the lower prop part. Instead of bars, the tension members 12 may be formed by ropes or chains, the links of the chains comprising flat plates.
Patent GB-395892-A (GB)
Title: Improvements in pneumatic cushions
IPC: A47C27/08
Filed: 1932-09-12
Abstract: 395,892. Air-cushions. SAMPSON, R. W., 30, Church Street, New York, U.S.A. Sept. 12, 1932, No. 25294. Convention date, Sept. 25, 1931. [Class 52 (iv).] In an air-cushion 1 having a number of transversely arranged chambers 2 projecting from its underside one or more of said chambers has a concave arch 2a so that when in use displaced air is accommodated without undue bulging by flattening of the arch. The cushion is secured on spaced bearers 8, 9 by a detachable cover.
Patent GB-861899-A (GB)
Title: Process for the manufacture of halogen substituted aromatic nitriles
Inventor: HACKMANN JOHANNES THOMAS
IPC: C07C255/49
Filed: 1959-07-23
Abstract: Aromatic nitriles having a halogen atom substituted in each position ortho to the cyano group are prepared by heating the corresponding 0:01 - dinitrocyano - or 0 - halo - 01 - nitrocyano-aromatic compound with chlorine or thionyl chloride at a temperature of at least 180 DEG  C., preferably 200 DEG  to 300 DEG  C. In examples: (1) 2 - chloro - 6 - nitrobenzonitrile is melted and chlorine passed through the liquid, or heated with thionyl chloride, to give 2 : 6-dichlorobenzonitrile; (2) 2:6-dinitrobenzonitrile is heated and chlorine passed through to give 2 : 6-dichlorobenzonitrile. Specification 861,898 is referred to.
Patent GB-1058412-A (GB)
Title: Treatment of synthetic polyester fibrous materials and films
Inventor: MOYSE JAMES ALBERT
IPC: D06M15/07
Filed: 1963-02-14
Abstract: Fibrous materials composed of a synthetic hydrophobic polyester are rendered antistatic and stiffened and are given a modified handle, reduced tendency to soil, improved moisture absorbency and a greater affinity for cellulose substantive agents such as p  dyestuffs and optical brightening agents by applying thereto from an aqueous medium a natural polymeric substance or a derivative thereof having at least one reactive hydrogen atom in each molecule and an alkaline reacting substance in the absence of a mono-or di-halogeno-1:3: 5-triazine and then heating them.  The natural polymeric substance or derivative thereof may be alginic acid, sodium alginate, gelatin, casein, starch, a starch dextrin, hydroxypropyl starch, methyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, tannic acid or deacetylated chitin, and the alkaline reacting substance may be an alkali metal bicarbonate, carbonate, sesquicarbonate, phosphate, hydroxide, quaternary ammonium hydroxide or a mixture thereof.  As a result of the treatment the fibrous materials may gain in weight by 0.01 - 5%.  The polymeric substance and alkaline reacting substance may be applied to the fibrous materials together or separately and after treatment the fibrous materials may be dried and heated to 50 DEG  - 230 DEG C for from 1 second up to 60 minutes.  Filaments, fibres, rovings, yarns, non-woven webs and woven and knitted fabrics made from polyethylene terephthalate may be treated.ALSO:Fibrous materials and films composed of a synthetic hydrophobic polyester are rendered antistatic and stiffened and are given a modified handle, reduced tendency to soil, improved moisture absorbency and a greater affinity for cellulose substantive agents such as dyestuffs and optical brightening agents by applying thereto from an aqueous medium a natural polymeric substance or derivative thereof having at least one reactive hydrogen atom in each molecule and an alkaline reacting substance in the absence of amone-or di-halogeno-1:3:5-triazine and then heating them.  The natural polymeric substance or derivative thereof may be algeinic acid, sodium alginate, gelatin, casein, starch, a starch dextrin, hydroxypropyl starch, methyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, tannic acid or deacetylated chitin and the alkaline reacting substance may be an alkali metal bicarbonate, carbonate, sesquicarbonate phosphate, hydroxide, quarternary ammonium hydroxide or a mixture thereof.  As a result of the treatment fibrous materials may gain in weight by 0.01-5% and films by 0.05-0.5% by weight.  The polymeric substance and alkaline reacting substance may be applied to the fibrous materials or films together or separately and after treatment the fibrous materials or films may be dried and heated to 50 DEG -230 DEG C. for from 1 second up to 60 minutes.  Nonwoven webs and woven and knitted fabrics made from polyethylene terephthalate may be treated.
Patent GB-170569-A (GB)
Title: Improvements in thermionic devices
IPC: H01J19/68
Filed: 1921-09-26
Abstract: 170,569. Ges. f³r Drahtlose Telegraphie. Oct. 22, 1920, [Convention date]. Void [Published under Sect. 91 of the Act]. Vacuum tubes; low-pressure metallic-vapour apparatus.-In a discharge tube containing a rare gas, one of the electrodes is formed of or contains a metal or compound, which, at the working temperature gives off a vapour or gas to produce a permanent dilution of the rare gas. The cathode may contain an amalgam of mercury with a small quantity of potassium so that mercury vapour is given off, or may contain iron in which hydrogen has been occluded.
Patent GB-278360-A (GB)
Title: Improvements in or relating to circuit interrupters and operating mechanism therefor
IPC: H01H33/55
Filed: 1927-09-27
Abstract: 278,360. Metropolitan-Vickers Electrical Co., Ltd., (Assignees of Aalborg, C.). Sept. 28, 1926, [Convention date]. Oil switches; cases. - In arrangements of oil switches in which a plurality of circuit interrupters are operated by links extending within protective casings from a common actuating mechanism across the bank of interrupters, the interrupter contacts with their operating mechanism are contained within gas-tight casings which are separated by intervening walls from the compartments containing the actuating mechanism, the operative connections passing through these walls being such as to prevent a transfer of gas between the separated compartments. As shown in Fig. 2 the three switches of a three-phase interrupter are contained in tanks 1 and are operated from a common actuating mechanism 9 through links 7 passing through pipes 8. The links 7 are pivotally secured to crank arms 15 mounted on shafts 4 on each interrupter, the shafts 4 passing through gas tight glands in the walls 13 of the connecting chambers (Fig. 1) so that the compartments 5 containing the links and connecting mechanism are effectively shut off from the upper portions of the switch through suitable mechanism 3 to the switch operating rod 2 within each switch casing.
Patent GB-172407-A (GB)
Title: Improvements in thread and like winding machines
IPC: B65H54/36
Filed: 1920-09-04
Abstract: 172,407. Smith, A. Sept. 4, 1920. Winding-machines.-In machines for winding yarns or threads upon spools, bobbins, tubes, or the like, of the kind wherein the spindle is reciprocated and the thread-guide is advanced to build the cop, the thread-guide is mounted on a bracket 3 provided with a spring catch 17 engaging a screw 4, rotated by a ratchet-wheel and pawl 15 actuated by a cam 11, mounted on a shaft 7 driven from the spindle or on a supplementary shaft 8 driven through change gearing from the shaft 7. Two retaining-catches 18, 18<a>, one mounted slightly in advance of the other, prevent backward movement of the screw 4. Specification 13863/88 is referred to.
Patent GB-403919-A (GB)
Title: Improvements in and relating to railway switch mechanism
IPC: B61L5/02
Filed: 1932-09-19
Abstract: 403,919. Railway switch mechanism. WILLIAMS, L. WYNN-, Haughton Bridge Works, Darlington. Sept. 19, 1932, No. 25580/33. Divided on 401,852. [Class 104 (i).] To enable stretcher bars b of standard gauge to be used between switch rails of various gauges, distance pieces of various thicknesses are arranged between the switch rails i and the brackets h connecting the bar to the rails.
Patent GB-1217712-A (GB)
Title: Bowling track
Inventor: PHILPOT ARTHUR ALFRED
IPC: A63D1/00
Filed: 1968-05-29
Abstract: 1,217,712. Bowling tracks. A. A. PHILPOT. 22 May, 1969 [29 May, 1968], No. 25670/68. Heading A6D. A bowling track 10, comprises a concave surface 11, of parabolic cross section, directed upwardly and made or lined with plastics or suitable smooth material, and surrounded by a rim 12. A series of pins 13 secured to the surface by magnets, rubber cups or suction pads forms the target. A hole 16 is formed in the bottom of the surface whereby the bowls may be returned to the bowler by way of a track 17. Further targets 15 are arranged on the concave surface. In a second embodiment the rink is of parabolic cross section but tapers from one end to the other, the target being positioned adjacent the bowling point. In a third embodiment the rink 15 of constant cross section and the longitudinal axis is inclined at an angle to the horizontal.
Patent GB-172412-A (GB)
Title: A combined magnetic compass and dip indicator
IPC: G01C17/00
Filed: 1921-04-18
Abstract: 172,412. Fotheringhame, A. M. April 18, 1921. Compasses, magnetic. -Relates to a compass in which the needle is mounted so as to be free to swing around both the horizontal and the vertical axes, so that the instrument can be used to indicate the dip as well as the horizontal direction of the magnetic field, and consists in an arrangement of horizontal and vertical correctors for the compass and in the manner of ascertaining and applying the necessary corrections. An aluminium frame 13 carrying the card 14 and supported on a pivot 11 in the casing 6 carries bearings 16 for an horizontal spindle 17, to which is secured the needle or a series of needles 18 with co-planar axes. The frame also carries a dip scale 15. The casing 6 is gimbal mounted on the binnacle 21 which carries brackets 22 supporting a casing 23, which is loosely mounted on the binnacle and has a cylindrical wall 24 and a cover 25. This casing carries the correctors, the vertical corrector comprising a .tube 35 adapted to contain one or more bars of iron or steel and suspended in gimbals and adjustable radially in guides 27 by means of a screw- 29. The horizontal correctors 37 are slidably mounted between the binnacle 21 and wall, and each comprises a rotatable disc 43 having slots 45 adapted to receive iron or steel correcting-bars, the discs being mounted on slidable blocks 41 engaging screws 46 so that they can be adjusted radially by turning heads 47. The discs can be secured against rotation by lock-nuts 44. To set the correctors, the ship is swung and the dip noted at every point. The ship's head is brought to the point of greatest dip error and a circle concentric with the compass is drawn on the deck and marked into points. The compass is then unshipped and placed over each of these points in turn and the point of greatest dip error is found. The compass is then re-shipped and the casing 23 is turned until the centre of the tube 35 is in the plane containing the said point and the centre of the compass, the casing 23 being then secured to the binnacle. Iron or steel is now placed in the tube 35 until the dip error is approximately'corrected, the final correction being obtained by adjusting the tube along the screw 29. If necessary the tube 35 may be tilted and held in its tilted position. To set the horizontal correctors the ship's head is brought to the point of maximum deviation and the correctors are arranged parallel to the lines of magnetic force. Iron or steel bars are then inserted between the slots 45, in equal numbers in each corrector until the deviation is approximately corrected. The correctors 37 are then secured to the casing 23 and final adjustment is made by means of the screws 46.
Patent GB-998629-A (GB)
Title: Improvements in or relating to pulverising mills
Inventor: MCKENZIE EDWIN CHARLES
IPC: B02C15/12
Filed: 1963-06-28
Abstract: 998,629. Pulverizing mills. BABCOCK & WILCOX Ltd. June 29, 1964 [June 28, 1963], No. 25759/63. Heading B2A. A pulverizing mill having grinding elements coacting with a grinding table surrounded by means defining with the opposed surface of the grinding table an annular gap for directing entraining fluid upwardly is characterized in that the gap has a width appropriate to the flow therethrough of only a part of the entraining fluid for carrying ground material from the mill and in parallel with the gap are means for introducing into the mill the remainder of the said fluid. In the form shown, a ball-andring mill of the kind described in Specification 523,753 has a throat ring 6 provided with an inner frusto-conical face 7 which with the opposed face 8 of the lower grinding ring 4 defines an annular gap 9 for directing entraining fluid upwardly. The ring 6 has an upper wall 10 formed with angularly-spaced circumferential slots 11 provided with peripheral lips 12 to which are welded bars 13 to provide a plurality of slits 14. The ring is divided into three circumferential sections leaving an aperture through which tramp iron is passed by means of a relief gate 19. A wind box 20 supplies entraining fluid to the mill housing. Material is supplied through a feeder 5 to the inner side of the grinding zone ; alternatively, it may be supplied to the outer side of the grinding zone. In modifications, the throat ring is applied (a) to a mill in which grinding is effected between a grinding table and rollers rotatable about the axis of the mill, (b) to a mill in which grinding is effected between a grinding table rotatable about the axis of the mill and rollers, and (c) to a roller-and-ring mill and in this case, the throat ring may, alternatively, be flat and be supported by vanes.
Patent GB-869655-A (GB)
Title: An improved structure of aerofoil shape for use in aircraft
Inventor: CLEMENS RONALD
IPC: B64C27/473
Filed: 1956-08-23
Abstract: 869,655. Aircraft framework. AERO CONTROLS Ltd. Aug. 12, 1957 [Aug. 23, 1956], No. 25790/56. Addition to 756;673. Class 4. In an improvement in or modification of the structure claimed in the parent Specification, the spar 33 of fibre-reinforced plastic is reinforced by three metal laminae 34, 35 and 36 which are of substantially channel section to conform to the leading edge profile to which they are parallel. The root end of the spar 33 is widened chordally as indicated at 37 and lamina 34 is similarly widened at 38. This provides a mounting for external reinforcing laminae 40, 41 and blocks 42 by means of which the structure, when a helicpoter rotor blade is secured to a rotor hub. The trailing portion 31 of the structure comprises blocks 45 of expanded plastic material which may be reinforced by glass fibres and the whole is enclosed in an outer metal skin 32 formed with trailing edge flanges 47 for attachment to a metal strip 49.
Patent GB-1089202-A (GB)
Title: Improvements in or relating to glass-ceramics
Inventor: MCMILLAN PETER WILLIAM
IPC: C03C10/00
Filed: 1963-06-28
Abstract: A glass-ceramic article is made by forming the article in glass including essentially in per cent by weight: SiO2, 40.0-70.0; CaO, 7.5-37.5; Na2O, 4.0-14.0; Al2O3, 1.0-10.0; P2O5, 0.5-12.5; F2, 0.1-2.5, the balance, if any, consisting of other compatible constituents. The glass may also include: B2O3, 0-2%; and MgO, SrO, BaO, ZnO, CdO and/or PbO totalling 0-3.0%.  Usual impurities may be present, as may refining agents, e.g. cerium oxide.  The article is then subjected to a heat-treatment including a step in which it is heated at \sO 10 DEG  C/min. to 150 DEG -250 DEG  C. above the dilatometric softening point, (Mg point), and is held in this temperature range until a major proportion of the glass is devitrified.  The heat-treatment may be a one, two, or three stage process: in the three-stage process the temperature is (i) raised between 150 DEG  C. below and 50 DEG  C. above the Mg point; (ii) held; (iii) raised to not more than 150 DEG  C. above the Mg point; (iv) held; (v) raised to 150-250 DEG  C. above the Mg point; (vi) held; (vii) reduced to room temperature. In all the temperature-change steps, the rate is \sO 10 DEG  C/min.  In the two-stage process, only steps (iii)-(vii) are performed, and in the single-stage process, only steps (v)-(vii) are performed.
Patent GB-913403-A (GB)
Title: Apparatus for treating liquids electrolytically
IPC: B01D61/50
Filed: 1961-07-17
Abstract: 913,403. Electro-dialytic cells. AMERICAN MACHINE & FOUNDRY CO. July 17, 1961 [July 20, 1960], No.25802/61. Class 41. An electro-dialytic cell consisting of a stack of anionic and cationic permeable membranes forming diluting and concentrating cells, is precharged in the cathode compartment with a water-soluble acid compound, e.g. solid sodium bisulphate; oxalic, citric or phosphoric acid, to supply acid and thus reduce the precipitation of solids on the membranes. Each electrode com. partment may be provided with the solid acid, so that current may be reversed. An anionic membrane is mounted as the last member of the stack adjacent the electrode compartment containing acid. A suitable apparatus comprises a stack of anionic membrane 48A, gasket, cationic membrane 48K &c. ending in an anionic membrane 48A, clamped together between thick gaskets 66, insulating sheets 65, carrying electrodes 67, 72, and outer plastic blocks 33, 34, held by steel plates 30. The end anionic membranes are covered by a sheet 69 of porous non-woven material resistant to chlorine, e.g. for brine electrolysis. The cathode chamber 67 contains a solid salt 25, which may also be in the form of loosely packed powder. The upper part of each electrode chamber is vented through pipes 35, 37 leading to closures 22 having perforated lids 23, through which gases may escape. Water may be added through these closures. Any base produced in the catholyte is neutralized by the acid present, and acid water may move through the anionic membrane 48A. If both electrode compartments are charged with acid, the current is periodically reversed. The water or liquid to be treated enters through two pipes 39 (one shown) and leaves the stack through two pipes 41 (one shown). A gasket (Fig. 3, not shown) having a cut-out area communicating with one manifold supply pipe is described.
Patent GB-387034-A (GB)
Title: Improvements in or relating to conveyors
IPC: B65G15/42
Filed: 1931-09-15
Abstract: 387,034. Endless - - belt conveyers. GARDINER, C. W., White House, High Street, High Barnet, Hertfordshire. Sept. 15, 1931, No. 25849. [Class 78 (i).] In a conveyer of the kind in which a perforated belt operates in a casing a, material is discharged through an aperture in the floor of the casing by a scraper c of rubber, felt-faced wood or the like, which is loosely mounted in grooves b in the sides of the casing. The under surface d of the scraper is chamfered. In a modification the scraper is mounted loosely in a housing forming part of the casing and projects laterally into the casing to a degree which is adjustable.