baber/WOPTO huggingface dataset:
Patent GB-754900-A (GB)
Title: Purification of chlortetracycline
Filed: 1954-08-24
Abstract: Chlortetracycline is purified by acidifying a liquid culture medium resulting from the fermentative growth of Streptomyces aureofaciens and containing ions of one or more of calcium, strontium, barium or magnesium, clarifying the medium, adding to the clarified medium sufficient alkali to bring the pH to within the range of 6 to 10, separating the cake thus precipitated, extracting the cake with acidified normal propanol or acidified tertiary butanol, removing insoluble material thereby forming an alcoholic extract, adding to the alcoholic extract an inorganic chloride which is soluble in water but is relatively insoluble in the n-propanol or t.-butanol, in quantity sufficient to produce an aqueous phase and an alcohol phase, separating the alcohol phase and processing the same to isolate chlortetracycline hydrochloride therefrom.  Preliminary acidification is at pH below 4 and preferably below 2, especially 1.5; suitable acids being sulphuric, hydrochloric and phosphoric.  Sodium hydroxide, sodium carbonate or ammonia may be used to adjust pH of clarified broth to preferably pH 7 to 9.  The t.-butanol may contain 10 per cent of water.  The extraction temperature is 0 DEG  to 60 DEG C., and preferably 20 DEG  C.  Specified inorganic chlorides are sodium chloride and ammonium chloride.  Chlortetracycline is recovered from the n-propanol or t.-butanol phase by crystallisation, preferably in the presence of 2-ethoxyethanol.  Specification 713,411 is referred to.
Patent GB-743568-A (GB)
Title: Improvements in or relating to the preparation of a mixture of concentrated hydrochloric and nitric acids
IPC: C01B21/46
Filed: 1953-09-07
Abstract: <PICT:0743568/III/1> A mixture of concentrated hydrochloric and nitric acids is produced by intimately contacting nitrosyl chloride and a stoichiometric excess of oxygen as air with dilute hydrochloric acid solution at 0-50 DEG C.  Concentrated HCl and HNO3 in molar ratio 3:1 are charged to reactor 10 heated to say 85-95 DEG C.  The mixture of chlorine and nitrosyl chloride evolved is passed through water condenser 15 to absorber 17 containing 50-100 per cent HNO3 at 15-35 DEG C. which dissolves out the NOCl.  The Cl2 passes from 17 through water scrubber 21 and sulphuric acid scrubber 23 to compressor 25 for liquefaction.  When the acid in 17 is saturated with NOCl, the gases from condenser 15 are switched to HNO3 absorber 27, which is used alternately with absorber 17, and NOCl is recovered from 17 by heating to 60-70 DEG C. The NOCl passes to absorber 32 where it is contacted with air (at least 2.5 vols./vol. NOCl) entering at 35 and a countercurrent of 5-40 per cent HCl entering at 34.  Mixed acids in molar ratio HCl : HNO3 :: 3 : 1 are recycled to reactor 10 through line 36. Absorber 32, which may contain bubble plates or packing, may be cooled to 20-30 DEG C. by water circulating over the outside, and a series of such towers may be used.  The water from condenser 15 and scrubber 21 may be added with the HCl through 34 to recover any HCl, NO, or NO2 contained therein.
Patent GB-298354-A (GB)
Title: Improvements in hand-shields for use with hot laundry-irons, kettles and pan-lids
IPC: D06F79/00
Filed: 1927-09-21
Abstract: 298,354. Turner, C. W., and Turner, M. G. Sept. 21, 1927. Handles. -- A handshield for use with a hand-iron, kettle or panlid comprises a metal plate 1 which may have an asbestos covering. The plate may be detachably secured to the handle 2 by a pair of spring arms 3, Fig. 1, or it may be secured by metal strips 7, Fig. 3, to a flexible fabric handle holder 5 of asymmetric shape.
Patent GB-454688-A (GB)
Title: Improvements relating to slicing machines
IPC: B26D7/01
Filed: 1935-09-06
Abstract: 454,688. Slicing-machines. SIVERTSEN, P., Valhalla Highlands, Cold Spring, New York, U.S.A. Sept. 6, 1935, No. 24856. Convention date, Sept. 15, 1934. [Class 28 (ii)] In a slicing-machine the end holder E is provided at one of its corners with an integral sleeve G, slidably and pivotally mounted on a guide rod H arranged adjacent to one edge of the V-shaped food supporting trough A. A stop plate M is arranged adjacent to the rod H which prevents the holder E from being swung to the inoperative position unless it is retracted from the knife to the fullest extent. The holder E is retained in its inoperative position by a catch T which engages a catch S on the holder, the catches being kept in locking engagement by a spring R, or by the modified locking-means shown in Fig. 6. As described the trough A is inclined so that a gravity feed is effected towards an inclined knife, but the trough may be arranged in association with a horizontal or vertical knife.
Patent GB-1305287-A (GB)
IPC: H01H43/28
Filed: 1970-05-22
Abstract: 1305287 Time delay electric switch ARROWHART (EUROPE) Ltd 22 May 1970 [23 May 1969] 24886/70 Heading H1N An electric switch unit, which may be part of an electromagnetic relay and be arranged with its contacts in series with the relay coil so that the coil circuit is interrupted for a set time after de-energization of the coil, has a pneumatic time delay device comprising a bellows 20 arranged to collapse on actuation and extend, at a rate dependent on the size of an adjustable orifice 34, on release. The check valve is similar to that described in Specification 1,305,112 and has a spring 28 urging the bellows end 21 against a disc member 34. The orifice size is controlled by an adjustable pin 32. The bellows 20 is biased to the extended position by a spring 22 of sufficient strength to overcome a spring 23 so that a carrier 19 on which the spring 23 acts is held in a position such that the snap-action contact arms 13 thereon engage fixed contacts 18. When the relay coil (not shown) is energized, the actuator 40 is moved downward and a projection 66 thereof engages the carrier 19 to hold the contacts in the position referred to above. As the actuator is moved downward connected arms 61, 62 are rotated about fixed pivots 63 and their inner ends engage a washer 27 fixed on the plunger 26 of the bellows so as to collapse the bellows. When the relay coil is de-energized the actuator is released so that the spring 23 moves the carrier 19 upward to change-over the contacts 13, and the bellows are also released so that after a set time the bellows plunger 26 engages the carrier 19 to reset the contacts to the position shown.
Patent GB-330827-A (GB)
Title: Improvements in or relating to atomizers
IPC: B05B11/06
Filed: 1929-08-15
Abstract: 330,827. Art Metal Works, Inc., (Assignees of Aronson, L. V.). June 4, 1929, [Convention date]. Air-pressure sprayers.-An atomizer comprises a casing C, Figs. 1 and 2, within which is mounted a liquid containing vial 1 and a reciprocating air pump 10, air from which is forced through a tube 9 across the top of a liquid immersed tube 7. The casing C is provided with a hinged lid 21 so shaped that when closed it is engaged by the knob 13 of the pump and held in its closed position by a spring 19 but on a slight depression of the knob 13 it is opened by a spring 22 so as to clear the knob and allow the pump to be operated. Within the lid 21 is a resilient pad 25 which closes the tube 7 and a vent 8 to prevent escape of liquid. An opening 2 is formed in the bottom of the casing through which the vial 1 may be inserted. This opening is closed by a sliding plate 3. Specification 318,998 is referred to.
Patent GB-1504993-A (GB)
Title: Bridging ramp
IPC: B65G69/28
Filed: 1975-06-11
Abstract: 1504993 Ramps K ALTEN 11 June 1975 [11 June 1974] 24978/75 Heading B8H A ramp for bridging the gap between a vehicle platform 2 and a fixed platform 1 comprises a bridging plate 3 with a pair of arms 14 hinged thereto, each arm having stops 15 pivotally mounted therein to act against the platforms and prevent longitudinal movement of the ramp. The arms are biased by springs 19 into an inoperative position within recesses 13 on the underside of the plate 3, the strength of the springs being such that in the operative position of the ramp, as shown, the arms pivot under gravity to an operative position, but when the ramp is in a vertical transportation position the arms are held by the springs in the recesses. A wedge 7 is pivotally mounted on the end of the plate 3 which bears on the platform 1 and may be moved to a position above the plate to expose rollers 10 for use in the transportation of the ramp.
Patent GB-1414415-A (GB)
Title: Cutting chain
IPC: E21C25/34
Filed: 1973-05-24
Abstract: 1414415 Mining machine cutter chains JEFFREY GALION Inc 24 May 1973 [26 May 1972] 24993/73 Heading E1F A mining machine cutter chain includes links e.g. 50, 50' each of which has a raised bit-carrying boss 54 projecting laterally into an adjacent link row; the underside of the boss being relieved to permit relative articulation between adjacent link rows. The boss has two oblique faces 56, 58, one to receive a bit bore and the other a slot 66 against the side of which the bit seats, curved surfaces 60, 62 beneath the projecting boss allowing adjacent links to articulate. Three types of link are employed in the complete chain, the type described above, links 20 with laterally centred bosses, and plain links 18; all are interconnected by pins 100.
Patent GB-1461989-A (GB)
Title: Process for producing c2 hydrocarbons
IPC: C07C9/06
Filed: 1975-06-11
Abstract: 1461989 Fischer-Tropsch synthesis and hydrocracking CONTINENTAL OIL CO 11 June 1975 25042/75 Heading C5E A process for producing ethane and/or ethylene comprises (a) reacting H 2  and CO in a mole ratio of 1:1 to 5:1 at 150-450‹ C., a pressure of from atmospheric to 75 atmospheres and a space velocity of 500-50,000 V/V/hr S.T.P. in the presence of a Fischer-Tropsch catalyst containing Fe, Co, Ni or Ru to a conversion of at least 50 % of the CO to produce a reaction effluent containing H 2 , CO, CO 2 , H 2 O, hydrocarbons and oxygenated hydrocarbons; (b) hydrocracking at least part of said effluent at 600-900‹ C., a pressure of at least 5 atmos. gauge and a residence time of 0À1-60 sec., the mole ratio of H 2  to total C 3+  hydrocarbons and oxygenated hydrocarbons being at least 1:1, and (c) recovering C 2  hydrocarbons for the hydrocracking effluent. H 2  may be separated from the effluent from (b) and recycled to (a) or (b); C 3+  hydrocarbons may be separated from effluent from (b) and recycled to (b). A small concentration of sulphur compounds, e.g. 10 ppm, helps inhibit carbon deposition in the hydrocracking zone. Water or steam in amount up to 3 mol per mole hydrocarbon and oxygenated hydrocarbon may also be introduced into the hydrocracking zone to present carbonization and favour the production of ethylene over ethane.
Patent GB-476798-A (GB)
Title: Improvements in siphons
IPC: F04F10/00
Filed: 1937-09-15
Abstract: 476,798. Siphons. DALGREN, G. H., and COSTER, O. F. V. Sept. 15, 1937, No. 25117. Convention date, Sept. 23, 1936. [Class 69 (i)] To increase the rate of discharge of a siphon of the kind which is kept primed by means of a liquid seal 6, 7 at the end of each branch, an extension 5 of the outlet limb 2 extending below the seal 7 is provided, together with means to put it into and out of effective communication with the limb 2, the said means preferably acting in response to the rise and fall of the liquid in which the inlet limb is immersed. In the form shown, the extension 5 depends from a casing 4 surrounding the seal 7 and having connected to it an air inlet tube 13, the open end 14 of which is positioned-above the seal 6 of the inlet limb. When the level of the liquid being siphoned is above the end 14 of the tube 13 it prevents entry of air to the chamber 4, so that the extension 5 is in effective communication with the limb 2 and rapid siphoning is effected. When the liquid level falls below the end 14, air enters the chamber 4 and breaks the connection between the extension 5 and limb 2, siphoning then proceeding slowly under the difference in levels of the liquid being siphoned and that in the receptacle 4. When these two levels become equal at the level of the rim of the seal 6, siphoning ceases and the siphon remains primed owing to the seals 6, 7. The siphon is, on first being put into use, primed through a funnel 17, a cock 18 in the extension 5 being closed, and the end of the inlet limb being also closed by raising the seal 6 until a rubber disc 12 in it contacts with the end of the limb.
Patent GB-1433276-A (GB)
Title: Matrix printer
IPC: B41J2/235
Filed: 1974-06-06
Abstract: 1433276 Selective printing PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES LTD (PHILIPS' GLOEILAMPENFABRIEKEN NV) 6 June 1974 25126/74 Heading B6J A wire mosaic printer head comprises a plurality of wires such as 10, 11 guided in ducts 20 in a plate 22 of synthetic material, each wire being actuated by a respective electromagnetic 1<SP>1</SP>-18<SP>1</SP>, the electromagnets being arranged in a common plane and the printing ends of the wires being in a line perpendicular to the plane of the electromagnets, each electromagnet actuator being screwed into the plate 22. A plurality of plates 22 may be provided to provide an extended line of wire printing elements.
Patent GB-406936-A (GB)
Title: Improvements in and relating to low temperature electric heat radiating panels
IPC: F24D13/02
Filed: 1933-09-11
Abstract: 406,936. Electric heating panels. UNITY HEATING, Ltd., (formerly YOUNG, OSMOND, & YOUNG, Ltd.), Welwyn Garden City, and PETRIE, D. G., Italian House, Meadow Green, Welwyn Garden City, Hertfordshire. Sept. 11, 1933, No. 25130. [Class 39 (iii).] A low-temperature heat-radiating panel comprises a pair of plates 1, 2 secured together face to face, the plate 2 being corrugated to form pockets 3 containing removable heating elements 4 constructed as self-contained units. The plates are spot welded at the points of contact. Tongues 13 and angles 12 are secured at intervals to the back of plate 1 at opposite sides thereof. The tongues engages slots in an inner side wall 14 of a supporting frame 6, and holes in the angles 12 are engaged by screws 11 mounted in bosses 10 secured to the frame. Triangular corner pieces and cross straps are welded to the frame at the back. Each heating element comprises a series of mica strips arranged end in end in metal side channels 18 and provided with two rows of holes through which a resistance wire is threaded. Both terminals are at the same end of the element. The elements are positioned by metal clips 30 having free ends reaching into the corners of the spaces 3. The frame is provided with displaceable portions according to Specification 408,146. In Fig. 5 the heating panel is secured to an angle iron frame 24 mounted in a wall recess. The heating elements comprise continuous mica strips to which are riveted positioning clips 30. One end of the plate 1 is detachable together with the corresponding angle iron. A bridging strip 26 is arranged in recesses 27 in the corrugated plate.
Patent GB-216832-A (GB)
Title: Improvements in or relating to table game apparatus
IPC: A63F7/00
Filed: 1923-10-09
Abstract: 216,832. Seifert & S÷hne, H., (Assignees of Janik, E.). May 30, 1923, [Convention date]. Table games. - The fence surrounding the table football board described in Specification 215,709, is provided with an inclined lower face from which the balls rebound into a trough which is inclined in the same direction as the face. As shown in Fig. 4, the balls are deflected by the inclined lower face of the fence 2 into a trough 18. In a modification, Fig. 5, the balls pass round a rising, circular track 19 into a trough 17 in the upper surface of the fence 2, the said trough forming a magazine for the projecting- device. In a further modification, Fig. 6, the balls pass down into a space 21 below the board, the construction being such as to render the use of a parapet in front of the fence 2 unnecessary. As shown in Fig. 2, the projecting-devices 6 are situated in gaps in the fence 2 and are pivoted on pins situated underneath their muzzles, the parapet being dispensed with.
Patent GB-1196732-A (GB)
Title: Improvements in and relating to Filters.
Inventor: DAVIS MAURICE
IPC: B01D39/16
Filed: 1966-06-07
Abstract: 1,196,732. Air filter. DAVIS INDUSTRIAL EQUIPMENT CO. Ltd. 1 Sept., 1967 [7 June, 1966], No. 25254/66. Heading BIT. An air filter element 4 of broken-celled foamed plastics is held to corrugated shape by plastics-coated cords 5. The element is clamped between frames (1, 2), of wood, metal or plastics, which are held together by spring clips (3) or by being pushed into opposed channels (11) of a peripheral frame. A wire supporting frame (6, 7, 8) is inserted between the element and the downstream frame (2) and wires (8) have loops (9) to accommodate cords 5 (Figs. 1, 2, not shown). A series of frames (1) may be bolted to a support (10), with clips (3) extending from between frames (1) and support (10) across frames (1) to engage frames (2).
Patent GB-621902-A (GB)
Title: Improved process for the catalytic synthesis of hydrocarbons
IPC: B01J27/12
Filed: 1946-08-23
Abstract: Liquid hydrocarbons are synthesized from carbon monoxide and hydrogen in the presence of a catalyst comprising a major proportion of an iron component and a minor proportion of a fluorine compound of potassium.  The latter may be potassium fluoride or complex fluorides such as potassium aluminium fluoride and potassium fluosilicate, and may constitute 0.1-10, preferably about 1 per cent, of the iron component such as red or yellow iron oxide or iron ore such as h matite, limonite, and magnetite. The iron oxide may be moistened with aqueous potassium fluoride solution, dried and shaped, if desired with addition of 3-4 per cent of a binder, e.g. a stearate, which is later removed by roasting at 800-1200 DEG  F.  The impregnated oxide may be reduced, for example with hydrogen at 600-1400 DEG  F., and then sintered in a non-oxidizing atmosphere at 1000-1800 DEG  F. Alternatively, iron or iron oxide containing potassium hydroxide, carbonate or nitrate is fluorinated with hydrogen or ferric fluoride, either as solutions or vapours, or with fluosilicic acid or their salts or gaseous organic fluorides or the iron may be fluorinated prior to impregnating with the potassium compound.ALSO:Liquid hydrocarbons are synthesized from carbon monoxide and hydrogen in the presence of a catalyst comprising a major proportion of an iron component and a minor proportion of a fluorine compound of potassium. The latter may be potassium fluoride or complex fluorides such as potassium aluminium fluoride and potassium fluosilicate, and may constitute 0.1-10, preferably about 1 per cent of the iron component such as red or yellow iron oxide or iron ore such as h matite, limonite and magnetite.  The iron oxide may be moistioned with aqueous potassium fluoride solution, dried and shaped, if desired with addition of 3-4 per cent of a binder, e.g. a stearate, which is later removed by roasting at 800-1200 DEG  F.  The impregnated oxide may be reduced, for example with hydrogen at 600-1400 DEG  F., and then sintered in a non-oxidizing atmosphere at 1000-1800 DEG  F. Alternatively, iron or iron oxide containing potassium hydroxide, carbonate or nitrate is fluorinated with hydrogen or ferric fluoride, either as solutions or vapours, or with fluosilicic acids or their salts or gaseous organic fluorides or the iron may be fluorinated prior to impregnating with the potassium compound.  The synthesis is effected under conventional conditions, e.g. 450-850 DEG  F., 3-25 atms., H2 : CO of 0.6-3 : 1, and 100-2500 vols./vol./hr. When olefin formation is desired, temperatures of 10-50 DEG  F. above the optimum for maximum yields of liquid, preferably 630-680 DEG  F., are used.
Patent GB-1145918-A (GB)
Title: Improvements in electrodes for use in fuel cells
IPC: H01M8/12
Filed: 1966-06-08
Abstract: 1,145,918. Fuel cell electrodes. GENERAL ELECTRIC CO. 8 June, 1966 [10 June, 1965 (3); 29 June, 1965], No. 25496/66. Heading H1B An electrode member suitable for fuel cells comprises at least one of iron, manganese, cobalt, nickel, vanadium, titanium, chromium or zinc oxide, mixed titanium-iron, zinc-lead, or zinc-iron oxide, or uranium dioxide at least partially dissolved in an oxygen ion-conducting metal oxide. Fig. 4 shows a fuel cell employing a tubular solid electrolyte member 11, e.g. of stabilized zirconia, having electrode members 12, at least one of which is according to the invention, on the inner and outer surfaces.
Patent GB-361441-A (GB)
Title: An improved electro-magnetic valve
IPC: F16K31/06
Filed: 1930-08-27
Abstract: 361,441. Electrically-actuated valves. MUSGRAVE, J. L. and CRITTALL & CO., Ltd., R., 43, Bloomsbury Square, London. Aug. 27, 1930, No. 25543. [Class 135.] An electromagnetically actuated valve adapted for use in thermostaticallv controlled heating systems comprises a multiple-beat closure member B .. B<3> opened by gravity and closed in two stages by two electro. magnets or solenoids E, E<1>. When the solenoid E<1> is ener. gized the plunger F partly closes the valve, the two uppet closure elements B, B' being then slightly more open than the lower closure elements B<2>, B<3>. The solenoid E may be energized subsequently, or simultaneously, to complete the closure of the valve.
Patent GB-426306-A (GB)
Title: Improvements in reflecting lenses
IPC: G02B5/122
Filed: 1934-09-05
Abstract: 426,306. Reflectors. BARME, B., Haus Ruthenbeck, Elberfeld, and BARME, F., 3, Hansastrasse, Barmen, both in Wuppertal, Germany. Sept. 5, 1934, No. 25556. [Class 97 (i)] A reflex light consists of a plano - convex lens a having a parabolic or spherical curved surface, and provided on its rear plane surface with a circumferential ring of reflecting prisms b, preferably of tetrahedral form. The prisms may be applied to a flat ring surrounding the lens proper.
Patent GB-202191-A (GB)
Title: Improvements in and relating to feeding troughs for animals
IPC: A01K5/02
Filed: 1922-09-22
Abstract: 202,191. Savile, R. A. Sept. 22,1922. Feeding-appliances for animals.-A pig-feeder having a trough supplied with dry meal from a hopper is fitted with a freely-movable agitator placed on the trough bottom below the hopper to assist the flow of the meal. The agitating-device may comprise radial arms 4 attached to a ring 3 and pivoted on a bolt 7, the bent ends 5 of the arms projecting into the annular feeding-space 2. A loose member, comprising a ring 9, Fig. 6, with cross-bars 8 in square, triangular, or cross form, or a triangle of bars, may be employed. Specification 185,034 is referred to.
Patent GB-800177-A (GB)
Title: An improved method and apparatus for the vacuum treatment of molten metals
IPC: G21C19/46
Filed: 1956-08-22
Abstract: 800,177. Degassing metals. SCIENTIFIC RESEARCH INSTITUTE. Ltd. Aug. 22, 1956 [Aug.22, 1955], No. 25695/56. Class 72 A method of degassing molten metal comprises passing the metal from a receiver or ladle into a vessel having a reduced pressure, then, after removal of the gases, restoring atmospheric pressure and casting the metal. As shown, a receiver 2, removably secured to a vessel 1, has a movable plug 4 sealing a hole which communicates with the vessel which may be evacuated by means of a pipe 15 connected to a vacuum pump. The molten metal enters the vessel 1 in a thin film, is immediately degassed, and collects on the floor of the vessel from which it is poured, after the inside pressure has been restored to atmospheric. through an opening 8 closed by a plug 10. The depth of metal in the vessel may be indicated by electrodes 16. In a modification, Fig. 2 (not shown), a ladle may be supported in the vessel to receive the metal which may be passed into the vessel from another ladle.