baber/WOPTO huggingface dataset:
Patent GB-1458127-A (GB)
Title: Water-cooled high-tension power cables
IPC: H01B7/42
Filed: 1974-02-07
Abstract: 1458127 Power cables FELTEN & GUILLEAUME KABELWERKE AG 7 Feb 1974 [5 April 1973 2 Aug 1973] 05709/74 Heading H1A In a high tension power cable the diameter of a cooling water channel 3 is at least 60 mm. when the conductor is of aluminium and at least 70 mm. when it is of copper. The conductor may comprise a helically or toroidally corrugated metallic tube or windings of copper or aluminium wire members 1 on a smooth or a helically or toroidally corrugated tube 2 which may be of metal or plastics material. If aluminium is used to form the cooling water channel it may be protected against corrosion by a tubular lining of copper or plastics material or may be provided with an internal coating of metallic oxide. The electrical insulation 5 may be of oilimpregnated paper and the conductor and insulation screens 4 and 6 of carbon black paper and metallized paper respectively, or the insulation may be of a plastics material e.g. polyethylene, in which case the screen consist of an extruded layer of semiconductive plastics material. Copper tape may be applied over the layer 6. The resulting cable core may be drawn into a corrugated aluminium tube 7 which has a covering 8 of a plastics material and a PVC outer sheath 9. The outer surface of the sheath and/or conductor may be covered with a material of low thermal conductivity. In a modification of the embodiment the hollow channel may be formed from a tube of lead or aluminium, the conductor wires of aluminium and a tube of aluminium forced or extruded over the conductor wires in order to contain any leaks of coolant within the conductor. Specific examples of conductor dimensions are given and claimed. The wall thickness of the conductor may be increased with increasing distance from the coolant inlet to correspond with the increased resistivity due to the higher temperature. This increase may take place at each point between adjacent cable sections, each cable section having a uniform wall thickness.
Patent GB-433797-A (GB)
Title: Improvements in alternating current impulse relays
IPC: H01H47/22
Filed: 1934-02-21
Abstract: 433,797. Automatic exchange systems. TELEFONAKTIEBOLAGET L. M. ERICSSON, 33, Kungsgatan, Stockholm. Feb. 21, 1934, No. 5768. Convention date, Feb. 24, 1933. [Class 40 (iv)] In systems using A.C. impulsing, the slowing up of the release of a D.C. impulse receiving relay due to the presence of rectifiers is prevented by connecting a condenser, shunted by a resistance, in series with the relay. The quick operating feature of the relay is not impaired. When the impulse contact I1 closes, the relay R1 pulls up rapidly owing to the charging of the condenser C1, but the current through the relay then drops to a value, determined by the resistance M1, just sufficient to hold the relay which therefore releases quickly when contact 11 opens. In a modification, the resistance is connected across a series circuit comprising the condenser and a part of the winding of the relay so that, when the impulse ceases, the discharge of the condenser assists the release of the relay. These arrangements are effective for lines of varying impedance but the values of the condenser and resistance may be altered to suit the line.
Patent GB-1336108-A (GB)
Title: Method of manufacturing the second of a pair of reproduction masks for use in the manufacture of shadow-masks
IPC: H01J9/14
Filed: 1972-02-08
Abstract: 1336108 Shadow masks PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 8 Feb 1972 [11 Feb 1971] 5791/72 Heading B3A  A method of manufacturing the second of a pair of associated reproduction masks 15, 17, Fig. 2, for use in the manufacture of a metallic shadow mask 9 arranged between a picture display screen (7), Fig. 1 (not shown), and electron guns (1), (3), (5) of a shadow mask picture display tube for a colour television and provided with a pattern of apertures 19 which widen towards the screen and where one reproduction mask is an accurate positive or negative image of the apertures on the gun side of the shadow mask and the other is an accurate positive or negative of the same apertures on the screen side of the shadow mask comprises positioning one of the reproduction masks 15<SP>1</SP>, Fig. 3, at a distance from and parallel to a photographic plate 21, exposing the plate to light, originating from a substantially homogeneous, flat light source 23 larger than the reproduction mask, travelling through lightpermeable portions 27 so that the plate is exposed to a pattern corresponding to the lightpermeable portions of the reproduction mask, the other mask of the pair being derived from the exposed photographic plate 21. The distance d between the mask 15<SP>1</SP> and plate 21 is reproducible and achieved by separating the two with a transparent foil (31), Figs. 4, 6 (not shown), and fixing the resulting assembly in a suitable frame using a vacuum. The shadow mask 9, made of a thin metal plate, e.g. iron, is covered on both sides with a layer 11, 13 of photosensitive lacquer, and the reproduction masks are arranged on these lacquer layers, the lacquer being exposed where the reproduction masks are transparent. The lacquer is then developed and thus removed where apertures are to be provided in the shadow mask. The plate is then exposed to an etching agent which dissolves the metal where it is not protected by the lacquer and produces cavities on both sides of the metal plate which eventually form apertures. The masks 15, 17 are correctly positioned relative to each other during exposure of the photo-sensitive lacquer layers 11, 13 by providing each mask with a plurality of registration marks (33), Fig. 5 (not shown), i.e. a number of concentric rings (35), the pitches (S), (S<SP>1</SP>) of the marks being different for each reproduction mask. Thus, when the centres of corresponding marks (33) of masks 15, 17 register exactly, a concentric moirÚ pattern is produced when the masks are arranged on top of one another.
Patent GB-934110-A (GB)
Title: Elevator selection system
Inventor: HORNUNG STEPHEN ANTHONY
IPC: B66B1/18
Filed: 1961-02-16
Abstract: 934,110. Lift control systems. OTIS ELEVATOR CO. Feb. 16, 1961, No. 5814/61. Drawings to Specification. Class 78 (3). In a lift system comprising three or more lift cars, a control system is provided at a given floor for selecting automatically, when two or more cars are available at the time a car is being started from the floor, the next car to be started from the floor, the selection being such that intending passengers, in moving from the car being dispatched to the next selected car, do 'not have to pass another available car, regardless of which other cars are available. When the entrances are arranged in a single row, if two or more cars are avilable on opposite sides of the car being dispatched, means are provided for selecting automatically that car which is nearest the car being dispatched. If two cars, which are equally spaced from the dispatched, are available means may be provided to select that car which is nearer a predetermined end of the row. When the entrances are arranged in two rows on opposite sides of a corridor, and if two or more cars are available when one car is being dispatched including one car next to and another car directly across the corridor from the car being dispatched, means are provided for selecting the car which is nearer the portion of the corridor usually occupied by intending passengers before boarding the car being dispatched. Alternatively in this case, means may be provided for selecting the car next to, or the car opposite, the car being dispatched, regardless of which other cars are available. U.S.A. Specification 2,589,242 is referred to.
Patent GB-198647-A (GB)
Title: Improvements in or relating to the manufacture of storage batteries
IPC: H01M4/56
Filed: 1923-02-28
Abstract: Active material for battery electrodes is made by exposing pieces of lead to air or other oxidizing gas to form a superficial layer of lead suboxide and reducing the suboxide to powder by abrasion.  The process is carried out in a revolving drum containing the lead pieces and into which the air or other gas is led.  The resulting powder consists of a mixture of lead suboxide, monoxide and metallic lead, and has an apparent specific gravity of not more than 3.
Patent GB-1204835-A (GB)
Title: Self-extinguishing polyamide moulding compositions
Inventor: MICHAEL DIETRICH
IPC: C08K5/3492
Filed: 1969-02-04
Abstract: 1,204,835. Polyamide composition. FARBENFABRIKEN BAYER A.G. 4 Feb., 1969 [16 March, 1968], No. 5873/69. Headings C3N and C3R. A self-extinguishing polyamide moulding composition comprises a polyamide and 0.5- 25% wt. based on the composition of melamine, a melamine derivative or melam. The melamine derivative has Formula I wherein R and R<SP>1</SP> may be the same or different and may be H, CH 3 , C 2 H 5 , vinyl, C 6 H 5 , C 6 H 5 CO, or halogenophenyl. The polyamide has recurring carbonamide linkages in the polymer chain. Also present may be up to 80% wt., based on total composition, of fibres, e.g. glass, metal, cotton, sisal, asbestos, or synthetic fibres.
Patent GB-159223-A (GB)
Title: Improvements in steering-devices for helicopters
IPC: B64C27/18
Filed: 1921-02-21
Abstract: 159,223. Pateras Pescara, Raul, Marquis of. Feb. 21, 1920, [Convention date]. Drawings to Specification. Screw propellers.-Propellers of helicopters are geared together and driven in opposite directions by gas jets escaping from the trailing edges of the blades, inequalities in the reactions being compensated by governing the pressure or volume of the escaping gas.
Patent GB-875339-A (GB)
Title: Method of tenderizing and flavouring meat
Inventor: WILLIAMS BEVERLEY E
IPC: A23L13/70
Filed: 1960-02-19
Abstract: Meat is tenderized and improved in flavour by an approximately 48-hour treatment comprising introducing it at a temperature of approximately 35 DEG  F. into an enclosed space having for all, or part of, the treatment cycle a relative humidity of 90%, or higher, e.g. 100% or super saturation level, into which space the mould Thamnidium, e.g. T. elegans, T. anomalum, are periodically introduced, raising the temperature of the meat to 60 DEG  to 75 DEG F., maintaining its temperature at 65 DEG  to 75 DEG  F. for 32 hours or more, and then cooling it to 32 DEG  to 35 DEG  F. in less than 8 hours, the space being periodically sterilized during the process, e.g. using electrostatic precipitation and/or chemical sprays comprising propylene glycol or tributyl tin dioxide.  The Thamnidium mould strains may be introduced into the space by spraying in, in the form of a glycerol suspension and/or may be dispersed in sawdust lying in the space.  U.S.A. Specification 2,816,836 is referred to.
Patent GB-1135050-A (GB)
Title: N-cyanoalkyl secondary alkyl amines
IPC: A01N37/44
Filed: 1965-12-31
Abstract: 1,135,050. N - Cyanoalkyl - " secondary - alkylamines. ARMOUR & CO. 31 Dec., 1965 [31 Dec., 1964], No. 5989/68. Divided out of 1,135,048. Heading C2C. The invention comprises cyanoalkyl amines of the formula wherein x and y are integers having a sum of 6-47, R is a C 1-6  alkylene radical and z is 1-5. The compounds are obtained by reacting an alkylamine of the formula with a hydroxy- or halo-substituted alkyl cyanide containing 1-6 carbon atoms in the alkyl group or an alkenyl cyanide containing 2-6 carbon atoms in the alkenyl group in which the double bond is conjugated with the cyano group. The reaction is preferably effected in the presence of water using an excess of the alkyl cyanide. Examples relate to #-cyano ethyl compounds prepared from acrylonitrile and mixtures of C 7-9 -, C 9-11 -, C 11-15 - or C 15-20 - sec. alkyl amines. Reference has been directed by the Comptroller to Specification 980,128.
Patent GB-452774-A (GB)
Title: Improvements in and relating to heating stoves
IPC: F24B1/188
Filed: 1935-02-25
Abstract: 452,774. Heating air. MUIR, A. R., 310, Clarkston Road, Cathcart, Glasgow. Feb. 25, 1935, No. 6053. [Class 64 (i)] An air-heating open fireplace heated by solid, liquid or gaseous fuel comprises an inner casing A formed at the top with a flue D, an exterior casing L enclosing part of the flue, and one or more intermediate casings G, J forming two or more air-heating ducts surrounding the fire except at the front and bottom, the air passing upwardly through all the ducts and being delivered to the room by way of louvres, shutters or the like 0, which may be adjustable. In the construction shown, air is supplied to the passages by an inlet U in an exterior wall, and means, which may be thermostatically or manually controlled, may be provided for regulating the inlet of air to each of the passages. Air from the room passes to the innermost passage through controllable openings V beneath the fire, and may also be admitted through controllable openings in the front of the stove to the other passages. When liquid or gaseous fuel is employed, the inner casing A may be reflecting. In a modification, the inner casings terminate short of the outlets, thus providing a space behind the outlets in which the air from all the passages mixes before issuing into the room. The heated air may be delivered by pipes to other parts of the building. Specification 272,358, [CLass 64 (ii)], is referred to.
Patent GB-754719-A (GB)
Title: Improvements in or relating to rim assembly
IPC: B60B25/22
Filed: 1954-03-02
Abstract: 754,719. Wheel rims. GOODRICH CO., B. F. March 2, 1954 [March 24, 1953], No. 6070/54. Class 144 (2). A divisible rim assembly, comprising a rim base member 12 with a detachable continuous side ring 8 at one side retained thereon by a split ring 10 engaged in a lipped gutter 17, 19 formed in the rim base, is rendered fluid-tight and free from relative radial movement of its parts, on inflation of a tyre carried thereby, by forming the split ring 10 with a tapered surface 32 to engage either the lip 19 of the gutter 17, Fig. 2, or a radially inwardly extending lip 26 of the side ring to effect a wedging engagement between the gutter and the side ring, and by providing a rubber ring 11, confined by adjacent surfaces of the side ring 8, gutter 17 and splitring 10, which on axial compression seals against the side ring and the gutter. As shown in Fig. 2, the rubber ring 11 bears on its axially inner surface against an additional splitring 9 which engages the lip 26 of the side ring 8, the two split-rings 9 and 10 having such limited clearance between the gutter and side ring that extrusion of the rubber on axial compression is prevented. In an alternative arrangement the relative position of the split-rings 9 and 10 may be reversed, the tapered ring having a radially outwardly facing taper to engage the side ring lip 26. Where a large clearance exists between the split rings and their confining rim sections, the rubber ring may be encased between auxiliary co-extensive split metal side-rings. Fig. 5 shows a further construction wherein the splitring 9 is omitted, the rubber ring 94 bearing directly against a sloping shoulder 92 of the side ring 88, and a tapered base of the gutter 83.
Patent GB-347799-A (GB)
Title: Process for making zinc sulphide
IPC: C01G9/08
Filed: 1930-02-24
Abstract: Crystalline zinc sulphide for use as a pigment is produced by heating, for instance, at 1000 DEG  C., raw zinc sulphide in a chamber from which air is excluded, and conveying the vapours in a <PICT:0347799/III/1> stream of inert gas such as super-heated steam or nitrogen to a collecting medium.  Referring to the drawing, crude ore, preferably mixed with anthracite coal to produce electrical conductivity, is fed to preheater 9, through feed gate 12 to second preheater 16 and furnace chamber 8.  The gate 12 is controlled by electrodes 15.  When the level of the material drops, contact is broken, and by suitable mechanism the gate is opened.  The temperature obtained in the second preheater approximates to that produced between electrodes 6, 7.  Vaporized zinc sulphide is drawn through tuyere passage 19 to condensing chamber 20 by blower 21 to separator 22 and bags 24.  Nitrogen or superheated steam from generator 25 is circulated through the furnace, partly by pipe 26, partly by pipe 29.  This latter includes a coil 30 to provide a cooling action on the hot vapours. The lower end of the furnace extends into water in a rotating bowl 31.  Solid residue is removed by a scraper 33, waste water flowing into a trough-like member 34.
Patent GB-1120019-A (GB)
Title: A device for correcting potential variations due to polarisation
Inventor: MAX JACQUES
IPC: A61B5/04
Filed: 1967-02-09
Abstract: 1,120,019. Measuring contact potentials. COMMISSARIAT A L'ENERGIE ATOMIQUE. Feb.9, 1967 [Feb. 22, 1966], No.6299/67. Heading G1N. In the measurement of the potential of a human organ, e.g. heart, brain, muscles &c., in which contact electrodes are placed on the skin, the potential drift due to the polarization of the electrodes is compensated for by subtracting from the measured potential a linearly increasing potential equal to the polarization potential. The potential across the electrodes 1, 2, Fig. 2, is fed to the input of a differential amplifier 3 whose second input 14 is provided by the attenuated output from an amplifier 5, connected in parallel with a capacitor 6, whose input is provided either by the output of amplifier 3, via switch 9, or the voltage on the slider of a potentiometer 12, via switch 11. For setting the zero of the amplifier 3, switch 9 is closed either manually or automatically; capacitor 6 is charged to the level of the output from the amplifier 3, equal to the potential initially existing between the electrodes. When switch 9 is opened the capacitor discharges applying the voltage to the input of the amplifier 3 via attenuator 7 which is reset to give zero output. In use with switch 11 closed and switch 9 open, a linearly increasing voltage is applied to input 14, whose slope is arranged to be equal to that of the polarization potential by alteration of the slider of the potentiometer 12.
Patent GB-372456-A (GB)
Title: Trapped overflow and waste fittings for baths, lavatory basins and the like
IPC: E03C1/29
Filed: 1931-02-28
Abstract: 372,456. Sanitary traps. ROBINSON, E. O., 18, Plevna Terrace, and ASTLEY, W., Hawthorn Bank, both in Bingley, Yorkshire. Feb. 28, 1931, No. 6311. [Class 33.] A sanitary trap for baths, basins, &c. comprises a tube C carried by the bath &c. and screwed into, and extending below the water level in, a casing A1, which is provided with a flange A2 engaged by a lock nut C2 ; a waste overflow branch A7 enters the casing below the water seal and an additional " secret " overflow C6 'may be provided. Specification 6748/09, [Class 33, Drains &c.], is referred to.
Patent GB-149891-A (GB)
Title: Improvements in or relating to devices for use in playing draughts or chess
IPC: A63F3/02
Filed: 1920-03-02
Abstract: 149,891. Foss, C., and Nilsen, N. March 2, 1920. Board games.-Draughts and chessmen are fixed to the board, and carry insignias, one of which on each piece is exposed by an open sector in a covering piece. As shown, each piece is made up of an upper portion 15 from which a sector has been cut away so as to expose one of the patterns which represents, below the revolving piece, a vacant space, a red piece, or a white piece, or a crowned piece in the case of draughts, or one of the chessmen in the case of chess. Fig. 3 shows patterns which may be below the revolving portions. In Fig. 2, the draught 15, exposing the red sector 6, is capable of taking the draught 16 which shows the black sector 9 and of occupying the vacant position 17 shown by the white space 7. After each move, the corresponding upper portion of the piece is rotated to expose the appropriate ground plan.
Patent GB-378052-A (GB)
Title: Improvement in process of removing solvents from plastic colloids
IPC: C08L1/00
Filed: 1931-03-02
Abstract: Solvents are removed from cellulosic plastics by an osmotic process consisting in immersing the plastics in a non-solvent bath which has an osmotic pressure at least as great as that within the plastic, and gradually reducing the osmotic pressure.  In an example the treating bath comprises an aqueous solution of alcohol containing approximately 20 per cent by volume of alcohol. Celluloid sheets cut from a block are immersed in the bath and the alcohol is gradually replaced with water.  For carrying out the process on a large scale, a series of tanks in which the percentage of alcohol gradually decreases may be used, the celluloid being moved from tank to tank. In another arrangement the tanks are in cascade overflowing from one to the next, the first of the series being fed with water. Periodically the first tank of the series is recharged with celluloid and alcohol solution and water is fed into the next tank, the recharged tank becoming the last of the series.  Instead of cutting sheets from a block, the cellulosic plastic may be extruded in sheet form directly into the treating bath.  Other baths specified are aqueous solutions of common salt and of sugar.  The Specification as open to inspection under Sect. 91 (3) (a) comprises also the application of the osmotic process to other plastics such as vulcanized fibre.  This subject-matter does not appear in the Specification as accepted.ALSO:Solvents are removed from cellulosic plastics by an osmotic process consisting in immersing the plastics in a non-solvent bath which has an osmotic pressure at least as great as that within the plastic, and gradually reducing the osmotic pressure.  In an example the treating bath comprises an aqueous solution of alcohol containing approximately 20 per cent by volume of alcohol. Celluloid sheets cut from a block are immersed in the bath and the alcohol is gradually replaced with water.  For carrying out the process on a large scale, a series of tanks in which the percentage of alcohol gradually decreases may be used, the celluloid being moved from tank to tank.  In another arrangement the tanks are in cascade overflowing from one to the next, the first of the series being fed with water.  Periodically the first tank of the series is recharged with celluloid and alcohol solution and water is fed into the next tank, the recharged tank becoming the last of the series. Instead of cutting sheets from a block, the cellulosic plastic may be extruded in sheet form directly into the treating bath.  Other baths specified are aqueous solutions of common salt and of sugar.  The Specification as open to inspection under Sect. 91 (3) (a) comprises also the application of the osmotic process to other plastics such as vulcanized fibre.  This subject-matter does not appear in the Specification as accepted.
Patent GB-306910-A (GB)
Title: Improved plastic material impermeable to moisture
IPC: B32B27/00
Filed: 1929-02-27
Abstract: 306,910. Hansen, H. Feb. 27, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Compound paper.-Compound paper comprises sheets of paper united with one another by an adhesive comprising asphalt, tars, tar distillates, bitumen or mixtures thereof. The sheets are coated with a solution of the adhesive in an organic solvent such as light or heavy tar oils, chloroform, benzene or petrol, and are then united.