baber/WOPTO huggingface dataset:
Patent GB-1127591-A (GB)
Title: Improvements in or relating to methods of toughening glass
IPC: C03B27/004
Filed: 1964-12-09
Abstract: 1,127,591. Toughening glass sheets. PILKINGTON BROS. Ltd., and J. R. BEATTIE. 3 Dec., 1965 [9 Dec., 1964], No. 50157/64. Heading C1M. In amethod of toughening glass sheets the surfaces of a glass sheet at a temperature above its strain point are brought into contact with a graphite containing heat-conducting material, which material will not impair-the glass surface at the contacting temperature, and a reference temperature is maintained to control the rate of heat' flow through the graphite containing heat conducting material, thereby establishing a desired temperature difference between the surfaces of the glass sheet and' an interior portion of the glass sheet when it is cooled through its strain point. The graphite containing heatconducting material preferably comprises opposed graphite facing-slabs 3, 1 cm. thick, each mounted on solid aluminium blocks 5 having a cooling system 6 for maintaining the constant reference temperature. The outer face temperature of the graphite slabs is from 300‹ to 100‹ C. depending upon the thickness of the sheet, and the reference temperature is maintained at 50‹C. The toughening treatment may be effected by bringing the graphite into contact with the glass sheet for say 10 seconds at a pressure of 2 to 3 p.s.i. or at a pressure of 2 to 3 p.s.i. for 5 seconds and then at 15 p.s.i. for a further 5 seconds. If desired the graphite slab may be covered with fibre glass cloth impregnated with graphite. Alternatively in order that some areas of the glass sheet may be toughened to a lesser extent than others a portion of the surface of the graphite slab may be at a lower level (e.g. at 15, Fig. 2, not shown) so that during contact this area contacts the glass surface with less pressure than other areas. Also the surface of the graphite slab may have set therein strips of a material of lower heat conductivity such as fibre glass cloth impregnated with graphite. The metal block 5 may alternatively be copper, silver or steel. The glass sheet, which may have been previously bent to any desired curvature, may be carried to the toughening zone between the opposed graphite slabs by being suspended from overhead tongs, or by being conveyed horizontally over a gas cushion which is collapsed during toughening, or by being supported on an edge on a roller conveyer and being maintained vertical by a gas cushion formed along its vertical major surfaces, this cushion also being collapsed during toughening. The gas cushions are preferably formed by conducting a gas to a porous graphite bed which bed may also form the heat -conducting material. To prevent oxidation of the graphite the toughening process is preferably carried out in a non-oxidizing atmosphere such as nitrogen. For slight curvatures, bending of the sheet may take place at the same time as the toughening treatment, pressure being greater in this instance.
Patent GB-1204957-A (GB)
Title: Surface treatment of a workpiece
IPC: C25D5/02
Filed: 1968-10-22
Abstract: 1,204,957. Electrolytic treatment of metals, cleaning of metals, coating with metals. SIEMENS A.G. Oct.22, 1968 [Sept. 6, 1968], No.50175/68. Addition to 1, 204, 956. Headings C7B, C7E and C7F. Surface treatment of a workpiece comprises supporting the workpiece on a float floating in a liquid such that the workpiece is partially immersed therein for surface treatment by said liquid. The surface treatment may comprise currentless deposition of a metal, e.g. a noble metal such as gold, on to a plastics or metal workpiece, or chemical surface treatment with or without passage of electric current, e.g. degreasing, rust removal, pickling or anodic oxidation, but not electro-plating which forms the subject of the parent Specification, which also discloses apparatus suitable for carrying out the present invention.
Patent GB-1330855-A (GB)
Title: Current-inverter circuit arrangements
IPC: H02M7/515
Filed: 1970-10-22
Abstract: 1330855 Inverting BROWN BOVERI & CO Ltd 22 Oct 1970 [24 Oct 1969] 50311/70 Heading H2F An inverter utilizes as main converting elements and as commutating elements, thyristors 7... 10, i.e. thyristors behaving as forwardbiased diodes when reversely polarized and having further semi-conductor devices 9, 12 in series with the commutating thyristors 9, 10 so as to provide reverse blocking. In Fig. 262 (not shown) the commutation circuit comprises a pair of H-type thyristors connected in series opposition between the supply centre tap 0 and the commutation capacitor 7. In Fig. 16 (not shown) the commutation circuit comprises a series arrangement of two reverse conducting thyristors and two conventional diodes having the commutation capacitor connected to the centre point.
Patent GB-1135244-A (GB)
Title: Apparatus for separating unburnt solid particles and soot from the smoke discharged by chimneys
IPC: F23J15/02
Filed: 1965-11-29
Abstract: 1,135,244. Separating soot from smoke. D. VALENTE. 29 Nov., 1965 [2 Dec., 1964; 30 Oct., 1965], No. 50567/65. Headings B1R and BIT. In apparatus for removing soot particles and the like from smoke, smoke enters a pipe 1, coupled to a chimney (Figs. 1, 2 not shown), and passes through an expansion chamber 13, having a vertically adjustable baffle 24, to a duct 4, having a series of upright baffles 19, which leads to a scrubber with water spray nozzles 17. Duct 4 may wind helically round a vertical axis (Figs. 1, 2, 7, 16 not shown) (Fig. 17 shows duct 4 of Fig. 16 opened out straight), and various soot-collecting pockets downstream of alternate baffles 19 open into a soot removal duct 11. Duct 4 and baffles 19 may be rectangular as shown or respectively trapezoidal and triangular in section (Figs. 1, 2). A winch-operated door 2 may by-pass the separator and pass smoke straight through pipe 1. Various valves (15, 23) in the soot removal duct may form an air-lock (Fig. 2). In Figs. 9 . . . 12 (not shown), the duct 4 comprises a plurality of settling chambers with hopper-like bottoms, and in Figs. 13 . . . 15 (not shown) duct 4 has two sections in parallel. Fig. 17 shows a scrubber in which rows of removable hollow stainless steel slats 35 (Fig. 18, not shown) are sprayed with water, which washes the rising effluent smoke and carries separated soot into the lower hopper-like part of chamber 30. Floating soot is drained off by overflow 6 and water is recirculated to nozzles 17 by a pump 7. Make-up water is supplied by a pipe 9. In another embodiment (Figs. 2, 7) the rising smoke passes through saddle shaped louvre (16) into spray from nozzles 17. An external spiral staircase may be provided (Fig. 1).
Patent GB-505996-A (GB)
Abstract: 505,996. Centrifugal gas cleaners. ELLOR, J. E. Nov. 19, 1937, No. 31915. [Class 23] A centrifugal blower, particularly one used as a supercharger for an internal-combustion engine, has a rotor with blades 7, and also with additional blades 9 secured to the rotor shaft 4 and shaped to impart rotational movement to the entering air with a minimum of shock ; the cylindrical part 8 of the casing which encircles the blades 9 has an annular recess 11 provided with delivery pipes 12 for the collection and separate discharge of dust and like particles. Air enters the inlet 5 and passes through the rotor to the outlet 6. The fuol for the internal-combustion engine is introduced after the air has passed through the blower.
Patent GB-1315086-A (GB)
Title: Process for the treatment of parts of tobacco-substitute plants to produce a tobacco-substitute sheet
IPC: A24B3/14
Filed: 1971-11-02
Abstract: 1315086 Tobacco substitutes TAMAG BASEL AG 2 Nov 1971 [3 Nov 1970] 50806/71 Heading A2C In a process for forming a smokeable sheet from parts of tobacco-substitute plants containing little or no woody material, a slurry is formed from said plant parts which have been pre-ground to a particle size of 150Á or less, and from water in a mixing ratio by weight of from 1:1 to 1:10, the slurry is then wet ground to form a shapeable paste, 0.5 to 3% of sodium carboxymethyl cellulose and 1 to 10% of a plasticizing humectant are mixed into the paste, optionally up to 4% of mineral fibres and up to 1% of formate salts are added to the paste, and the paste is then cast into a sheet and dried. Tobacco-substitute plant parts exemplified comprise mixtures: of pectoral and black tea; of tea leaves, potato peel, rose petals and aniseed root tips; of tea leaves, tomato leaves and thyme roots; of stinging nettles, white clover blossoms, pine needles and dried leaves of morello cherries; and of dried ebony leaves, woodruff, maple bark, dried chestnut leaves, maize leaves and fleabean seeds. Plasticizing humectants used are glycerine, sorbitol and diethylene glycol. Other ingredients specified or exemplified are ammonia, ammonium formate, calcium formate, potassium hydroxide, potassium carbonate, polyphosphates, citric and tartaric acids, asbestos, molasses, and plum and fig extracts. Small amounts of pharmacologically active additives such as menthol, nicotine or caffeine may be included in the paste. Preferably, the pre-ground plant parts are further ground dry in an air jet mill to 50Á and below before wet grinding to a particle size of 5Á and below. The wet-ground paste may be mixed with not more than an equal quantity (weight for weight based on the dry weights of the plant parts) of plant parts which have been pre-ground to 50Á only and not wet-ground. Poisonous, harmful or otherwise undesirable substances may be extracted from the plant parts by solvent extraction or steam distillation of the slurry or paste.
Patent GB-511111-A (GB)
Abstract: 511,111. Time-alarms. BOGUE, M. Oct. 28, 1938, No. 31204. [Class 118 (ii)] [Also in Group XV] An electrically-actuated alarm for indicating lapse of intervals in games comprises a bell &c. 10 and battery 11 and a circuit adapted to be closed by an indicator-hand and wipe contact strip at suitably placed contacts 13.
Patent GB-1202809-A (GB)
Title: Fried edible products
Inventor: SIJBRING PIETER HERMAN
IPC: A23L5/10
Filed: 1968-10-29
Abstract: 1,202,809. Frying. INSTITUUT VOOR BEWARING EN VERWERKING VAN LANDBOUW PRODUKTEN. 29 Oct., 1968, No. 51301/68. Addition to 1,132,296. Heading A2E.  Elements formed from compositions comprising edible starch materials and containing sugars are fried in a two-stage process, which comprised firstly frying in oil to a moisture content of 5-20 wt. per cent and then frying in oil at reduced pressure and at a temperature not exceeding 100C. to a moisture content not exceeding 2.5 wt per cent. Suitable starting materials include potato products such as mashed. potato, potato powder or potato pieces, potato starch, milled cereal grain, and cereal starch. The elements may be formed with the aid of liquids such as milk or water. Binding agents, for example methylcellulose, waxy maize starch, or guar or locust bean gum, may be present. Monoglycerides and flavourings may be added. The elements may be formed from pastes by moulding or extrusion.
Patent GB-1282719-A (GB)
Title: Shaft seal arrangement
Inventor: TYLER STANLEY RALPH
IPC: F04D29/12
Filed: 1968-10-31
Abstract: 1282719 Shaft seals DOWTY FUEL SYSTEMS Ltd 16 Oct 1969 [31 Oct 1968] 51670/68 Heading F2B A seal for a fuel pump or gear-box in a gas turbine engine comprises a sealing ring 16 mounted in a fixed member 11 and acting against a rotatable shaft member 14 at co-operating sealing surfaces to divide the space between the members into a first zone 20 and a second zone, orifice means 24 in the fixed member connected to a source of lubricant for directing a flow of lubricant (for cooling and lubrication) into the first zone and on to the sealing ring and shaft member at the edges of the co-operating sealing surfaces, and a scavenge pump 27 disposed in the first zone and operable by the shaft member for returning lubricant from the first zone via an outlet 22. During operation, a continuous flow of lubricant at low pressure is supplied by an auxiliary pump to the first zone 20 to cool and lubricate the sealing ring which is urged axially by springs 19 into sliding contact with the shaft flange 14 and sealed to the fixed member 11 by a secondary seal 21. Impellor blades 27 on the flange form the scavenge pump and discharge the lubricant to the outlet 22 which also serves as the outlet for lubricant supplied to a bearing 13. The action of the pump reduces the pressure in the first zone 20 to that in the second zone on the other side of the ring so that, in the event of failure of the ring, there will be little, if any, leakage across the ring. In another embodiment, Fig. 3 (not shown), a pair of radially-spaced outer and inner sealing rings (16, 42) are urged in opposite directions by springs (19, 47) into sliding contact with a flange and shoulder respectively of a fuel pump shaft, the second zone (49) between the rings being vented by a passage (51). The outer sealing ring (16) is cooled and lubricated by lubricant which is supplied through the orifices (24) and discharged through the outlet (22) by the impellor blades (27) of the scavenge pump. The inner sealing ring (42) is cooled by fuel which is supplied through an inlet (52) in a housing (11) and discharged through a passage (54) into the suction inlet (36) of the fuel pump. In the event of failure of the inner sealing ring (42), leakage of fuel to the vented passage (51) is prevented by a labyrinth seal (48) and in the event of failure of both the rings (16, 42), any fuel leaking past the labyrinth seal (48) will be vented through the passage (51) while loss of lubricant into the vented space (49) is prevented by the action of the scavenge pump.
Patent GB-1185770-A (GB)
Title: Nitrogen-Containing Phosphonic Acid Esters and their Use in Fire Retardant Compositions
IPC: C08G18/50
Filed: 1968-10-31
Abstract: 1,185,770. Nitrogen-containing phosphonic acid esters. STAUFFER CHEMICAL CO. 31 Oct., 1968 [3 Nov., 1967], No. 51703/68. Heading C2C. [Also in Division C3] Compounds of the general formula where n 1  is 1, 2 or 3 and n 2  and n 3  are each either 0 or 1 with the proviso that n 1  + n 2  + n 3  is 3, R is alkylene or substituted alkylene, R 2  and R 3  are each hydrogen or C 1-4  alkyl, R 1  and R 4  are each hydrogen, C 1-18  alkyl, aryl or substituted aryl and n is an integer from 0 to 12 provided that at least one n is greater than 0, are prepared by reacting the corresponding free phosphonic acid with an alkylene oxide, preferably in the presence of an organic solvent. The compounds have fire-retardant properties.
Patent GB-517653-A (GB)
Abstract: 517,653. Seed grain immunisers. SCHERING AKT.-GES. Aug. 8, 1938, No. 23410. [Class 81 (i)] [Also in Group IV] Seed grain is immunised by treatment with a compound of the general formula in which R is alkylene, R<1> is alkyl, Y is hydroxyl or an acid residue, and x and y are whole numbers. The compounds are prepared by the action of alkyl mercury compounds of the formula R.Hg X, on alkylene diamines in a solvent such as an alcohol preferably at a raised temperature. The preferred specific compound which is used is prepared by the admixture in methyl alcoholic solution of ethylene diamihe and ethyl mercury chloride and has the composition (CLÀHgÀC2H5)2 (NH2ÀCH2ÀCH2ÀNH2)2À The compound is used mixed with talcum as a carrier by impregnating talcum with such an amount of an alcoholic solution of the compound that the resulting fungicide contains 0.7 per cent. Hg. Other preparations may also be used prepared from the same materials mixed in different proportions. One mentioned being a talcum base impregnated with 2 per cent. Hg. Alternatively the fungicides of the present invention may be used both as wet and dry immunising agents. An example of the production of such an agent which is given comprises mixing the complex mercury compound prepared, as described above with finely ground calcined sodium carbonate as a carrier substance. The quantity of agent employed corresponds to 2 per cent. Hg. calculated on the seed grain to be immunised.
Patent GB-1286692-A (GB)
Title: Improvements in or relating to plumb rules
Inventor: NOGARE TULLIO DALLE
IPC: E04G21/18
Filed: 1969-10-24
Abstract: 1286692 Levels T D NOGARE 24 Oct 1969 [30 Oct 1968] 52172/69 Heading G1F A plumb rule comprises a rod 1 of square or rectangular section having secured thereto two plates 2 at right-angles to one another for bearing against the masonry surface at a wall corner the rod being held in place by a stirrup 4 secured in the masonry and by a clamp 6, the verticality of the rod being set by use of two bubble level tubes set at right-angles or a circular bubble level at the top of the rod 1 or by use of a plumb bob suspended from the top of the rod 1 either outside the rod on inside if it is hollow, the surface of the rod having suitable apertures for viewing the plumb bob. The rod 1 is preferably formed of several sections fitting suitable together. In an alternative embodiment the rod is carried in a metal sleeve which is clamped to the masonry the sleeve having inside dimensions greater than the exterior dimensions of the rod, and the verticality of the rod being adjustable within the sleeve by use of hand screws mounted in the sleeve so as to bear on the rod. An arrangement for clamping the rod in place against an interior masonry corner is also described.
Patent GB-1291995-A (GB)
Title: High-voltage circuit breaker
Inventor: FRANTA JAROSLAV
IPC: H02B13/045
Filed: 1969-10-24
Abstract: 1291995 Gas blast switches VYZKUMNY A VYVOJOVY USTAV ELEKTRICKYCH PRISTROJU A ROZVADECU 24 Oct 1969 52304/69 Heading H1N A high voltage gas blast circuit breaker of the kind in which a gas of high dielectric strength is recirculated from a low pressure chamber to a high pressure reservoir by a compressor has the interrupter unit 10, the gas blast valve 12, the high pressure reservoir 13 and the compressor 14 all located inside a bell shaped low pressure container 3. The latter is sealed by a baseplate 2 which is mounted on a trolley 1 and carries the above parts as well as a gas filter 16 and a silencer 17 of the circuit breaker while the bell 3 carries only a pair of insulated terminals 6, 7. The plate 2 is conducting; the bell 3 may be conducting or insulating with an earthed conductive coating. The gas is sulphur hexafluoride.
Patent GB-1333937-A (GB)
Title: Dyestuff solutions
IPC: C09B57/02
Filed: 1970-11-04
Abstract: 1333937 Cationic dyestuff solutions CIBAGEIGY AG 4 Nov 1970 [5 Nov 1969 20 Feb 1970] 52531/70 Heading D1B The invention comprises storage-stable acidic solutions of cationic dyes of the benzo 1, 2- pyrane series, the cation being free from substituents producing an acid reaction on dissociating in water, in a solvent which comprises a water-soluble organic base, a watersoluble carboxylic acid, water, and optionally one or more neutral organic solvent. The solutions preferably contain by weight of the total solution 15 to 40% of dye salt, 25 to 60% of water-soluble carboxylic acid, 20 to 60% water and 3 to 15% of water soluble organic base, and the amounts of acid and base are such that after dilution with water 5 to 40g solution/litre water gives a pH of 3.5 to 5. The water-soluble organic bases used include primary, secondary and tertiary alkylamines (includes hydroxyalkylamines) aminoalkylamines, cycloalkylamines, aralkylamines, heterocyclic amines, urea and its N, N'-substituted derivatives. The water-soluble carboxylic acids includes C 1 -C 4  aliphatic monocarboxylic acids and hydroxycarboxylic acids. The optional neutral organic solvents include aliphatic alcohols and their ethers, esters, ketones, hydroxyketones, amides, nitriles, dialkylsulphonides, lactones, sulpholenes and sulpholanes. Other adjuvants include metal complex forming agents and non-ionic stabilisers. The solutions are stable in storage and on dilution are used for the printing or dyeing of leather, wool, silk, cellulose acetate, tannined cotton, paper, acid modified polyamide, polyurethane, polypropylene, polyesters and especially polyacrylonitrile.
Patent GB-1411615-A (GB)
Title: Transmission system
Inventor: STEIN M G P
IPC: H04L7/027
Filed: 1972-11-15
Abstract: 1411615 Digital transmission; synchronizing TELECOMMUNICATIONS RADIO ELECTRIQUES ET TELEPHONIQUES 15 Nov 1972 [18 Nov 1971] 52736/72 Heading H4P An arrangement for synchronizing a data transmission system having a transmission rate determined by a transmission clock and a data rate by a data clock not synchronizod with the transmission clock, the transmission terminal is provided with a sample and hold circuit for sampling signals at a transmission rate to form a digital signal which is transmitted. The receiver is provided with a data clock producing signals having two types of transition each period, one type of which is synchronized with a a mean phase position of incoming signals also a sample and hold circuit which samples incoming signals at instants corresponding to transitions of the other type in order to recover data signals. At the transmitter a data signal E from input 1 is applied to a sample and hold D type trigger 7 also receiving an input from a transmission clock, the digital signal derived therefrom being applied to output terminal 5. At the receiver input 6 is applied to a transition detector in circuit 9 comprising an exclusive OR 12-15 which generates, at each transition, a pulse equal to one period and in phase with pulses produced by crystal controlled oscillator 8 from which the data rate is also derived by division. In the absence of transistions in the received signal NAND's 19, 20 are blocked and 18, 22 enabled which passes oscillator pulses through A1-A2 output from which is divided down through A3-Ap to data rate. For each transition received at 17Q the phase of data clock pulses is varied the direction being determined by comparison at NAND 19 with the trailing edge of data clock pulses. If a transition occurs after a trailing edge NAND 19 is blocked hence as NAND 18 is also blocked an oscillator pulse is eliminated hence the phase of the output is retarded by an interval T/2p where T = period of data clock and p = number of stages of divider. If a transition occurs after a leading edge an additional pulse is inserted hence one type of transition, e.g. the trailing edge of data clock is synchronized with the mean phase position of transitions in receive digital signal. This is applied to a sample and hold D type trigger 11 together with received signal which is sampled at instants coinciding with leading transitions of data clock pulses hence the original data signal is recovered and applied to output 2. The system is stated to provide a low distortion output. Data rate can be altered by a replacement crystal having a different frequency with the proviso that data clock frequency must be lower than the transmission clock. It is stated that the error probability of the arrangement is small.
Patent GB-1168817-A (GB)
Title: New Halogen-Containing Phosphorus Esters having Pesticidal and Herbicidal Properties
IPC: C07F9/12
Filed: 1966-11-29
Abstract: 1,168,817. Pesticides containing halogenated phosphorus esters. CIBA Ltd. 29 Nov., 1966 [8 Dec., 1965], No. 53300/66. Heading ASE. [Also in Division C2] A pesticidal composition comprises one or more phosphorus esters of the formula:- wherein R 1  and R 2  are the same or different alkyl radicals bound to phosphorus directly or through oxygen or sulphur and containing together at most 5 carbon atoms, X is oxygen or sulphur, Hal is F, Cl, Br or I and R is a C 1 -C 4  alkyl radical, together with a carrier. The composition may contain a solvent, diluent, dispersant, wetting agent, an adhesive, a fertiliser and/or another pesticide and may be in the form of an emulsion concentrate, a paste, a wettable spray powder, a spray solution in an organic solvent, dust or granules. The product have insecticidal, acaricidal, nematocidal and microbiocidal and fungicidal properties and are particularly useful as herbicides, e.g. for selective weed control in rice culture.