baber/WOPTO huggingface dataset:
Patent GB-1309301-A (GB)
Title: External filters for aquaria
IPC: A01K63/04
Filed: 1970-09-21
Abstract: 1309301 Aquaria E KOLFERTZ 21 Sept 1970 [17 Dec 1969] 44907/70 Heading A1A [Also in Divisions B1 and F1] An external aquarium filter comprises a plastics housing defining a filter chamber 8, containing cotton wool filter medium through which water passes to enter at least one outlet chamber 9, which is extended downwards by a tube 16 closed at its lower end and enclosing a concentric tube 17 whose upper end discharges into an overflow channel 19 returning water to the aquarium, air bubbles being delivered into tube 17 by means 23, 24 so that tubes 16, 17 serve as an air lift pump. Tubes 16 and 17 may be telescopically extensible to enable pumping speed to be varied, though the air supply is constant. Fig. 1 shows the housing with an inlet chamber 7 to which water is delivered from the aquarium by siphon 28, abut water could be delivered directly to chamber 8, chambers 7 and 9 both serving as outlet chambers and being equipped with respective air lift tubes and overflow channels to return water to two aquaria or to two places in one aquarium. The filter has a thermostat 38 in inlet chamber 7 controlling a heater 37 which may be located in outlet chamber 9 or in tube 17. The housing is divided by removable partitions 5, 6, 11, partition 5 serving as an overflow and partitions 6 and 11 being perforated to support the filter medium. Tube 17 is integral with overflow channel 19, this unit and siphon 28 being separately formed. and located in the housing by appropriate cutouts in separate cover 33. The lower edge of tube 17 is serrated or slotted to allow influx of water. A protein foam separator 26, 27 extends upwards from overflow 19 for sea water aquaria where foam may form. The housing has an upper flange 41 and clamping screw 42 to mount it on an aquarium tank.
Patent GB-1353505-A (GB)
Title: Process for preparing sheetlike material for smoking
IPC: A24B15/12
Filed: 1971-09-27
Abstract: 1353505 Cultured tobacco compositions JAPAN MONOPOLY CORP 27 Sept 1971 [28 Sept 1970 4 Nov 1970] 44947/71 Heading A2C [Also in Division C6] A process for producing sheet-like material for smoking involves aerobically culturing tobacco cells derived from plants of genus Nicotiana in a liquid nutrient, preferably phosphate-enriched, medium (specified), separating tobacco cells from the cultured broth, reducing the overall moisture content of the separated cells to yield a moist powder with a moisture content of 30-60% by weight, extruding the moist material into sheet-like form and drying the sheet-like material, e.g. to a moisture content of 10-14%. The requisite reduction in moisture content may be achieved by heating the cells under reduced pressure at a temperature not exceeding 80C or by adding limited amounts of tobacco dust or vein, or of fibrous and/or inorganic materials exemplified by wood pulp, hemp, bagasse, beet, glass fibre, carbon fibre, silica, alumina, asbestos, kieselguhr, zeolite, talc and calcium carbonate. Conventional additives to tobacco such as aromatics, burning agents, sweetening agents and hygroscopic agents may be added to the moist powder or incorporated into the finished (dried) sheet material. In the procedure of the Examples, tobacco cells were obtained by culturing fragments of tobacco plants on a solid nutrient medium, to derive a callus, inoculating the callus into an equivalent liquid nutrient medium and culturing under aerobic conditions to obtain a suspension of tobacco cells. A sheet-like material was then produced from the cells according to the method of the invention. The following fragments were employed: (1) seed of Nicotiana tabacum var. bright yellow (2) leaf of N. tabacum var. xanthi (3) root of N. glutinosa (4) stem of N. debneyi (5) bud of N. tabacum var. nanbu and (6) petal of N. tabacum var. enshu.
Patent GB-1093705-A (GB)
Title: Method for the removal of polyesters and polyurethanes from metallic parts
IPC: C09D9/00
Filed: 1966-10-07
Abstract: Polyesters and polyurethanes are removed from metal surfaces, particularly from extrusion dies and screens of unalloyed or stainless steel, by treating with a melt of KOH and/or NaOH, preferably at a temperature e.g. 280-430 DEG C. that saponification is obtained without cracking or carbonization.
Patent GB-1031806-A (GB)
Title: Improvements in machining by spark erosion
IPC: B23H7/18
Filed: 1963-11-15
Abstract: 1,031,806. Spark erosion. COMPAGNIE DE SAINT-GOBAIN. Nov. 15, 1963, No. 45159/63. Heading B3Y. [Also in Division G3] A number of apertures are formed in a metal workpiece 1 by spark erosion using a number of groups of electrodes 4, 5, each supplied by its own charge and discharge circuit. The workpiece 1 is immersed in a bath 3 of dielectric liquid and the electrodes are mounted on a common head 7 whose position is adjusted by a motor 9 controlled by resistors 14, 15 and diodes 16, 17 to maintain a constant spark gap in response to the mean potential between the electrodes and workpiece. The electrode groups 4, 5 are supplied from separate condensers 12, 13 charged with direct current from terminals 10, 11, resistors 22, 23. Alternatively, separate supply sources may be used for the two circuits. At the beginning of the erosion operation the electrodes are vibrated. The workpiece 1 is of particular use in the extrusion of filaments and fibres of synthetic resin.
Patent GB-1125793-A (GB)
Title: Complexes of bismuth and chlorohydroxyquinoline and compositions containing them
IPC: C07F9/94
Filed: 1965-10-26
Abstract: 1,125,793. Bismuth-chlorohydroxyquinoline complexes. E. R. SQUIBB & SONS Inc. 26 Oct., 1965 [10 Nov., 1964], No. 45259/65. Heading C2C. Novel bismuth-chlorohydroxyquinoline complexes having the formula wherein X is chloro, m is 1, 2 or 3 and n is 0 or 1, are prepared by reacting a chlorohydroxyquinoline or a mixture of isomers thereof with a bismuth salt in an acid medium, adjusting the pH of the reaction to between 5 and 10 and recovering the precipitate thus formed. Pharmaceutical compositions having antidiarrheal and analgesic activity may be administered orally in the form of tablets, capsules, aqueous suspensions or elixirs, and contain a compound of the general formula above as the active ingredient.
Patent GB-1061015-A (GB)
Title: Improvements in and relating to the production of aliphatic dicarboxylic acids, nitrosyl halides and hydroxylamine
Inventor: HANIN JEAN
IPC: C01B21/14
Filed: 1963-11-15
Abstract: Saturated aliphatic di-carboxylic acids, nitrosyl halides and hydroxylamine and/or hydroxylamine hydrohalides are prepared by (a) contacting a nitrolic acid of formula HOOC-A-C(=NOH)-NO2 wherein A is an alkylene chain containing 3 to 10 carbon atoms and separating the radicals to which it is joined by at least 3 carbon atoms, with an aqueous solution of hydrohalic acid containing at least one mole of hydrohalic acid per mole of nitrolic acid at below 25 DEG  C.; (b) extracting at below 25 DEG  C. the nitrosyl halide formed, preferably as it is formed, by a solvent for this compound which is substantially insoluble in the aqueous solution of hydrohalic acid; and (c) heating at above 25 DEG  C. the resultant aqueous hydrohalic solution to obtain in aqueous solution a saturated aliphatic dicarboxylic acid and hydroxylamine and/or an hydroxylamine hydrohalide.  The nitrolic acid reactant may be prepared by contacting an aqueous solution of nitric acid with an alkanol of the formula <FORM:1061015/C2/1> at below 50 DEG  C.  The product of the reaction between the nitrolic acid and hydrohalic acid is an aqueous solution comprising an hydroxanic acid of the formula HOOC-A-C(=NOH)OH and/or an acid halide of the formula HOOC-A-C(=NOH)-X wherein X is the halogen of the hydrohalic acid. Dicarboxylic acid may be separated from the aqueous product of step (c) by crystallization on cooling and the hydroxylamine and/or hydroxylamine hydrochloride by evaporation to dryness and subsequent recrystallization.ALSO:Nitrosyl halides, saturated aliphatic dicarboxylic acids and hydroxylamine and/or hydroxylamine hydrohalides are prepared by (a) contacting a nitrolic acid of formula HOOC-A-C(=NOH)-NO2, wherein A is an alkylene chain containing 3 to 10 carbon atoms and separating the radicals to which it is joined by at least 3 carbon atoms, with an aqueous solution of hydrohalic acid containing at least one mole of hydrohalic acid per mole of nitrolic acid at below 25 DEG  C., (b) extracting at below 25 DEG  C. the nitrosyl halide formed, preferably as it is formed, by a solvent therefor which is substantially insoluble in the aqueous solution of hydrohalic acid, and (c) heating at above 25 DEG  C. the resultant aqueous solution to obtain in aqueous solution a saturated dicarboxylic acid and hydroxylamine and/or hydroxylamine hydrohalide. The dicarboxylic acid may be separated from the aqueous product by crystallization on cooling and the hydroxylamine and/or hydroxylamine hydrochloride by evaporation to dryness and subsequent recrystallization.
Patent GB-969244-A (GB)
Title: Improvements in making vacuum-tight cold welds between two tubular parts
IPC: B23K20/02
Filed: 1961-12-19
Abstract: 969,244. Welding by pressure. PHILIPS ELECTRICAL INDUSTRIES Ltd. Dec. 19, 1961 [Dec. 22, 1960], No. 45450/61. Heading B3R. In forming a cold weld between tubular parts 1, 2, the end of each part is provided with an outwardly projecting flange comprising a surface capable of cold welding, the surfaces are pressed together between encompassing inner and outer ring die members to form a cold weld therebetween and to bend the flange so that their outer edges are substantially parallel to the axis of the parts and the die ring members are left in position around the sealed flanges. Rings 6, 7, Fig. 3, with edges 15, 16, are soldered at 8 to the ends of iron alloy parts 1, 2 of a vidicon electron tube, the parts 1, 2 being joined to glass or metal parts 3, 4, Fig. 6, of the tube housing a lightsensitive screen 5. After assembling the tube electrodes the rings are compressed in vacua by dies 9, 10 acting on separate die rings 12, 13 which bend the outer edges and form a cold weld 11, Fig. 4, the die members 12, 13 being left on the welded rings. The lower die member may be a projection on the lower part 2. The rings 6, 7 may be of nickel, gold, silver, aluminium, tin, gold plated copper, copper or alloys or one or both may be of iron or iron alloy coated with a soft metal and the rings may be sealed directly to the glass parts of the tube or may be formed integrally with the copper or ferro-chromium parts 1, 2, in the latter case being gold, silver or copper coated. The tube may be a magnetron. A known method in which the dies are not left in position after welding is described.
Patent GB-1076888-A (GB)
Title: Improvements in or relating to liquid fuel dispensing apparatus
Inventor: DOLAN RONALD JAMES
IPC: B67D7/30
Filed: 1964-11-09
Abstract: 1,076,888. Dispensing liquid fuel. WAYNE TANK & PUMP CO. Ltd. Nov. 9, 1965 [Nov. 9, 1964], No. 45647/64. Heading A4T. A system for controlling a liquid fuel dispenser comprises a uni-selector switch B1, B2, Fig. 1, not shown, having its wiper contacts moved forward by pulses to its coil from a cam operated switch associated selectively by manual switches with the register volume or value drums, at least one bank of contacts in the selector switch being for unit amounts of fuel and all the contacts being normally energized, manual switches for de-energizing a contact corresponding to a selected dispensation of fuel, a solenoid valve in the fuel supply line normally held open when the system is energized, the valve being de-energized to close when the wiper reaches the deenergized contact. Two valves are provided, one partially closing for a dribble flow before the closing of the other. The selector switch also has decade banks of contacts B3, B4 for dispensing tens of units of fuel with manual switches for de-energizing the terminal numeral and reset highest decade group of ten contacts. When the amount to be dispensed is larger than that for one cycle of the selector switch, automatic de-energizing of the valve during a second cycle may be provided. A reset switch B5, B6 is provided and also permitting the customer to control the amount dispensed. Switches B7, B8 control the dispensing of a number of units in the range of 50-99, all the switches B1-B8 being driven together.
Patent GB-1280943-A (GB)
Title: Semiconductor device
IPC: H01L23/485
Filed: 1970-09-25
Abstract: 1280943 Semi-conductor devices LICENTIA PATENT-VERWALTUNGS GmbH 25 Sept 1970 [27 Sept 1969] 45768/70 Heading H1K A semi-conductor device comprises a monocrystalline semi-conductor body with at least two regions of differing conductivity type, and a passivation layer on its surface, the layer being capable of assuming two different resistivity states. The layer may be of vitreous material, the states being of high resistivity, and low resistivity, both of which states are stable. In an embodiment a silicon body 17, including diffused regions 12, 13, is used to form a transistor, the surface being covered by vapour deposition or cathodic sputtering with a vitreous layer 5 of silicon dioxide, boron trioxide, or phosphorus pentoxide and oxides of copper or tungsten. The layer as formed is in its high resistivity state and is a few microns thick. Contacts are made to the layer over the desied regions of the body, and each junction forwardly biased by voltages at the contacts. When the voltage reaches a threshold value the portion of the layer immediately below the contact changes to its low resistivity state, and the voltage is removed. Low resistance contact is thus made to the body through the layer without windows, and their attendant surface effects, being required in the layer. Prior to being contacted, the layer may act as a diffusion mask. In an alternative embodiment a diode may be formed, one region being diffused or produced by epitaxial growth, the diode being enclosed within a glass envelope.
Patent GB-934640-A (GB)
Title: Improved polypropylene-polyethylene blends
IPC: C08L23/06
Filed: 1961-12-21
Abstract: 55-90% low pressure, isotactic polypropylene is compounded with 10-45% of a polyethylene having less than 0/m110 methyl groups/100 C and a total weight per cent unsaturation of 0,005-0,05.  The polyethylene may have a density of 0,95-0,96, contain 0,02-0,07 methyl groups/100 C and have a number average molecular weight of 100,000-1,800,000.  The composition may have a Bell Brittleness temperature of less than -25 DEG F.  The polyethylene is prepared using catalysts described in Specifications 857,181 and 878,373.  The polypropylene may be prepared using a Ziegler catalyst or a catalyst as described above for polyethylene, and is 80-100% isotactic, 0-10% stereo-block, 0-10% atactic and has a number average molecular weight of 80,000-800,000.  Specification 893,540 also is referred to.
Patent GB-1137951-A (GB)
Title: Process and apparatus for centifugally forming elongate metal particles
IPC: B22F9/10
Filed: 1965-10-29
Abstract: 1,137,951. Granulating metals; aluminium alloy. REYNOLDS METALS CO. Oct.29, 1965 [Nov.12, 1964], No.45947/65. Headings C7A and C7X. Elongate solid metallic particles are centrifugally formed from a molten metal (or alloy), such as Al, Al alloy e.g. Be-Al, Pb-Bi alloy, or Cu, Zn, Pb, Ni, Fe (including steel) or Be, by maintaining a wall 38 of liquid spaced from and circumscribing the perforate side wall(s) 34 of an open pot 30, the liquid e.g. water or ethyl alcohol having a B. P. below the M.P. of the metal and a temperature in at least that portion of the liquid wall 38 nearest the perforate side wall(s) of between the B.P and 100 F. below the B.P., and introducing the molten metal 40 into the rotating pot so as to eject elongate molten particles through the perforate side wall(s) and into the wall of liquid to solidify the particles in free-flowing elongate form. The molten particles may pass through air, nitrogen or CO 2  into the liquid. The wall of liquid may be maintained by forming a vortex of the liquid 36 in a stationary tank 10 using a disc 28 connected to and rotatable with the pot 30. Examples of Al alloys are specified; e.g. containing (a) 13% Si and 1% Fe, (b) 1% Ni and 1% B.
Patent GB-1324891-A (GB)
Title: Passenger conveyor
IPC: B66B21/12
Filed: 1970-09-29
Abstract: 1324891 Endless conveyers INDUSTRIE PIRELLI SpA 29 Sept 1970 [30 Sept 1969] 46224/70 Addition to 1256364 Heading B8A The invention of the parent Specification is modified by the provision of dragging bands 6 at each curved end of the conveyer as well as for the main straight central portion. As shown, slats 1 of the conveyer are each pivotally mounted at one end by pins 15 (Fig. 4) on bearings at respective intersection points of links 18, 19. At the upstream end of the conveyer (Fig. 2), the slots 1 are in overlapping relation (Fig. 5). Ribs 34 in the dragging band 6 engage respective projection 11 (Fig. 4) of the slats. At the downstream end of the band 6, bearing wheels 26, 26 on the intersection points at the outer ends of the links 18, 19, enter converging pairs of guides 29, 30. These cause progressive flattening of the linkages formed by the links 18 and 19, and corresponding spacing apart and acceleration of the slots. The guides 29, 30 finish at the upstream end of the main dragging band 3 (Fig. 1). At the downstream end of the latter the bearing wheels 26 of the links 18, 19 enter decelerating guides 29, 30 which extend as far as the dragging band 7 at the downstream end of the conveyer. The band 7 curves downwardly into engagement with its drive wheel by virtue of the bearing action of rollers 38. A similar arrangement of accelerating and decelerating guides is provided on the return run of the conveyer. In the central high-speed conveying zone, where the slots are at their maximum separation apart, sockets 17, 17 on each side of the trailing end of each slot, engage pins 16, 16, projecting from the leading end of the adjacent slot. This prevents lifting or dropping of the slots and thus reduces wind resistant of the slots and the excavation depth required to accommodate the conveyer. Grab handles 8 (Fig. 7) are controlled by an extension 47 carrying a guide wheel 50. A pivot 49 at the junction of the handle 8 and its extension 47 is mounted on a respective pivot 15 of a slot 1. The guide wheels 50 are engaged between parallel guides 51, 52 along the main run of the conveyer and by extensions 53 and 54 along the return run. The extension 54 is so positioned as to bring the handles 8 into a horizontal position in order to reduce the depth occupied by the conveyer. A spring 55 or a spiral spring (56) (Fig. 8, not shown) controls movement of the guide wheels 50 between the guides 53 and 54.
Patent GB-462249-A (GB)
Abstract: 462,249. Colour filters. I. G. FARBENINDUSTRIE AKT.-GES. Sept. 4, 1935, No. 24676. Convention date, Sept. 4, 1934. [Class 97 (i)] A filter transparent to infra-red rays but opaque to the visible spectrum and ultra-violet is made by combining with known filters which absorb the ultra-violet and the visible spectrum up to bright red, filters comprising a dyestuff belonging to the class of penta-, hepta-, nona-, and undeca-carbocvanines. The filters are incorporated in colloid, e.g. gelatin, layers and they may be in separate layers, or both may be contained in the same layer. For example, a filter transparent to radiation above 8200 A., and opaque to all rays of shorter wavelength, may be made by combining a gelatin filter containing 1 : 1<1>-diethyl-benzthio-pentacarbo. cyanine nitrate, which absorbs radiation from 8200 A. to 5100 A., with an ordinary red filter, such as Agfa No. 42, which absorbs all rays below 6000 A. Specification 441,624 is referred to.
Patent GB-1412646-A (GB)
Title: Metallurgical process
IPC: C04B35/03
Filed: 1972-10-06
Abstract: 1412646 Metallurgical flux ELKEMSPIGERVERKET AS 6 Oct 1972 [8 Oct 1971] 46265/72 Heading C7M A metallurgical process includes the step of adding to the melt as a slag forming material calcined alkaline earthmetal carbonate material in the form of a sintered agglomerate produced by burning above 900‹C and pellets or briquettes of a comminuted raw alkaline earth metal carbonate material and a binding agent. Preferred binding agents are bentonite, sulphite lye, molasses, silica-dust, alumina or a burned carbonate material, e.g. dolomite, lime, magnesia and the mixture may further comprise a reducing agent, a flux and/or an alloying component and also water. The pellets or briquettes may be dried in the same or different furnace to the furnace in which the fining takes place.
Patent GB-1150755-A (GB)
Title: Improvements in or relating to Musical Boxes
Inventor: GLASS MARVIN IRVING
IPC: G10F1/06
Filed: 1966-10-17
Abstract: 1,150,755. Musical boxes. M. I. GLASS, [trading as MARVIN GLASS & ASSOCIATES]. 17 Oct., 1966 [22 Oct., 1965], No. 46306/66. Heading G5J. A musical box is provided with a multi-voice arrangement. As shown a musical box of the type in which a spring driven drum 18 has teeth 20 which pluck the teeth of a comb 22, has a bar 50 which carries a transverse rubber strip which can be moved into engagement with intermediate portions of the teeth to reduce their effective lengths and thus play the tune with a higher pitched voice. In one form (Fig. 5, not shown) the bar is a pivoted lever controlled by a spring pressed button which can be pushed inwardly towards the casing and latched to hold rubber strips out of engagement with the teeth. As shown the musical box is provided with a plastics amplifying cone 12 and a knob 14 allows a wedge 68 on a lever 62 to be forced between the lever 50 and the apex of the cone. This forces the rubber strip into engagement with the teeth and forms a direct contact with the cone to increase the amplification.
Patent GB-1522826-A (GB)
Title: Gas turbine engine afterburner flameholders
IPC: F23R3/18
Filed: 1975-11-10
Abstract: 1522826 Gas turbine engine afterburner flameholders GENERAL ELECTRIC CO 10 Nov 1975 [8 Jan 1975] 46388/75 Headings F1J and F1L The invention relates to the construction of a flameholder for the re-heat combustion chamber of a gas turbine jet engine. The flameholder is shown mounted within the annular duct 34 downstream of the turbine, the duct being defined outwardly by the outer casing 22 and inner liner 23, and being supported therefrom by a plurality of pivoted links 39. The flameholder comprises an outer wall 42 and an inner wall 40 of shorter axial length than the outer wall, the two walls defining an annular flow passage 43 therebetween. The leading edges 105 and 106 of the two walls diverge from an inlet 44. An annular V-section assembly 70 is mounted at the downstream end of the inner wall 40 by means of pivoted links 72. A series of swirl vanes 48 is disposed between the walls 40, 42 to impart swirl to the gases flowing through the passage 43. Pilot fuel is supplied through injectors 54 into spaces between swirl vanes, the fuel/gas mixture being ignited by an igniter 52 located between the outer wall 42 and the outer wall 99 of the V-section assembly. Re-heat fuel is supplied through injectors 62 into the outer annular passage 51 and through injectors 64 into the inner annular passage 53. A series of V-section members 86 project radially inwardly from the inner wall 94 of the V-section assembly 70.
Patent GB-1242695-A (GB)
Title: Photographic cameras
Inventor: UNO NAOYUKI
IPC: G03B7/083
Filed: 1968-09-30
Abstract: 1,242,695. Exposure-time control. ASAHI KOGAKU KOGYO K.K. Sept. 30, 1968 [Oct. 3, 1967], No.46389/68. Heading G2A. An electrical exposure-time control circuit 20 is energized by closure of a first switch 16 upon actuation of a shutter button, energization being maintained magnetically by a coil 21 attracting contacts 17 in parallel with switch 16 until or after the shutter is closed. The arrangement thus permits the circuit to continue operating even if switch 16 is opened.