baber/WOPTO huggingface dataset:
Patent GB-1443455-A (GB)
Title: Method and apparatus for producing colour changes in selected  areas of webs
IPC: B41M3/10
Filed: 1973-07-03
Abstract: 1443455 Electrolytic colour changing WIGGINS TEAPE Ltd 2 July 1974 [3 July 1973] 31658/73 Heading C7B [Also in Divisions B6 D1 and D2] A method of producing a paper or non-woven web having areas of differing colour or shades of colour comprises forming on a papermaking machine a web containing a chemical compound which generates a colour or change in colour of the web when subjected to an electrical potential difference, said compound having been introduced (a) into the web by an impregnation step after web formation, or (b) into the fibrous suspension from which the web is formed, and subjecting the web to an electrical potential difference in selected areas whilst on the papermaking machine so as to bring about a colour change in said areas. The web during or after formation may be supported on an electrically conductive carrier surface which carries the web into momentary contact with an electrically conductive zone or zones supported by a support member and corresponding in configuration with the selected areas, the carrier surface and support member being maintained at differing electrical potentials. The carrier may be an endless belt, Fourdrinier wire, or roll. The support member may be a belt, or roll e.g. dandy roll. Preferably, at the time of electrical contact, the web has a moisture content greater than 30%. The compound used may be a pigment e.g. iron oxide, dyestuff, e.g. a fluorescent dyestuff, a redox indicator, or a pH sensitive compound. Each ply of a two-ply sheet of paper may be treated according to the method. In an Example, a web was prepared from an aqueous suspension of wood pulp containing wood resin, alum, ferric chloride, and sodium ferrocyanide, and contacted with a dandy roll bearing a design through which a D.C. current was passed. A corresponding coloured design was formed in the web. The dandy roll had a metallic inner shell, a plastics non-conductive wove cover, and an electro-metal design secured to the cover. In another Example, the web was formed from an aqueous suspension of cotton linters and wood pulp, which also included wood resin, sodium aluminate, china clay, and manganese chloride. In a further Example, a web formed from an aqueous fibrous wood pulp suspension containing wood resin, aluminium sulphate, and ferric chloride, is sprayed with an aqueous solution of sodium ferrocyanide and a yellow dyestuff prior to contact with the dandy roll.
Patent GB-996980-A (GB)
Title: Tunnel diode logic circuits
IPC: H03K19/10
Filed: 1961-09-04
Abstract: 996,980. Tunnel diode logic circuit. RADIO CORPORATION OF AMERICA. Sept. 4, 1961 [Sept. 19, 1960], No. 31767/61. Heading H3T. An inverter, minority gate or majority gate comprises a balanced power supply and signal input and output terminals connected to a pair of series connected tunnel diodes. Referring to Fig. 1, two GaAs tunnel diodes 50, 52 are connected in series between a source of positive pulses 58, and a source of negative pulses 60. The amplitude of the pulses and the values of the resistors 54, 62, 56, 66 may be arranged either so that the circuit has two or three stable states. Inputs 74, 76, 78 for example, are connected to the anode of diode 50, and to the cathode of diode 52. Assuming a positive potential is applied to, say, input 74 diode 50 will be forward biased, and diode 52 reverse biased, and application of the pulses from sources 58, 60 will cause diode 50 to switch to its high state, and diode 52 to switch to its low state, resulting in a negative potential at the output terminal 94. Conversely a negative input will produce a positive output. Application of three inputs gives a minority logic circuit, i.e. if two inputs are positive and one negative the total input is positive resulting in a negative output. A mixed minoritymajority circuit may be produced by adding inputs 89, 91 connected to the junction of the two diodes. In a second embodiment, Fig. 3, the input and output terminals are interchanged and each series arrangement of tunnel diode and load resistor is shunted by a diode 110 or 112 which may be Ge backward diodes or low peak tunnel diodes, the arrangement being so that when tunnel diode 102 is conducting heavily diode 104 is shunted by diode 124, and when tunnel diode 104 is conducting heavily diode 102 is shunted by diode 120. In a modification of the circuit of Fig. 1, Fig. 5 (not shown) the inputs are connected across the two tunnel diodes by individual resistance networks, and in a modification of the circuit of Fig. 3, Fig. 6 (not shown) a pair of Ge backward diodes or low peak tunnel diodes are connected in reverse parallel between the junction of the two tunnel diodes 102, 104 and earth in place of the diodes 110, 112. If the circuit is arranged to be bi-stable, it may be biased so that in the absence of an input signal of either polarity, there is no ambiguity of the state it takes up.
Patent GB-1214065-A (GB)
Title: Sink strainer
IPC: E03C1/262
Filed: 1968-07-03
Abstract: 1,214,065. Sink strainer. PREMIER TOOL & DIE Ltd. 3 July, 1968 [2 May, 1968], No. 31823/68. Heading BID. A perforate, cup-like sink strainer 10, having a rubber washer 26 on its underside is supported by a spring steel clip 32 in a raised position, as shown, wherein water drains from the sink partly through the strainer and down the outlet drain 18, 'but can be pushed downwards so that washer 26 engages the sink and closes the outlet completely (Fig. 3, not shown). In the latter position, the inwardly sloping sections 40, 42 of the clip bear on the turned over sides of rectangular slot 64, formed in the base of the sink, to urge the strainer downwards and ensure a tight seal.
Patent GB-648170-A (GB)
Title: Improvements in or relating to pneumatic projectors
IPC: F41B11/641
Filed: 1948-12-09
Abstract: 648,170. Toy guns. CASCELLOID, Ltd., SENIOR, H., and BROWN, J. S. Dec. 9, 1948, No. 31868. [Class 132 (iii)] A gun for projecting table tennis balls &c. with an audible report comprises a cup-like housing 10 which is adapted to locate a ball 28 and is provided with a screwed spigot 15 for connection to a bicycle or like pump 16. As shown, the open end of the housing is fitted with a rubber ring 27 the inner edge of which has a diameter smaller than the diameter of the ball 28 and is free to be deformed to receive the latter and, later, to release it when a sufficient air pressure is applied thereto. A compression spring 29 is located within the housing for initially maintaining the ball against its seat on the ring 27, and a washer 25 is disposed around the spigot 15 to seal the connection between the housing and pump.
Patent GB-362603-A (GB)
Title: Improvements in, or relating to, cardboard boxes
IPC: B65D77/26
Filed: 1930-10-23
Abstract: 362,603. Boxes for garments &c. BARNES, A. H., 11, Lime Tree Avenue, Retford, Nottinghamshire. Oct. 23, 1930, No. 31882. [Class 18.1 A cardboard box for garments &c. is provided with one or more flyleaves 2, Fig. 1, for holding the contents in place, each leaf being secured to the inside of the box at one end 3 and the opposite free end of the leaf having one or more tabs 4 each of which is, when the contents are in the box, passed through two or more slots 5, 6 to adjustably retain the leaf in position; the end of the tab is passed over a projection 7 on the end of the box and retained in position when the lid is placed over the body of the box. In the form shown in Fig. 2, the flyleaf has a pair of tabs 4 and crossbracings 16, 17 of tape are provided for holding articles above the flyleaf, the brace 16 being secured at one end to the end wall 18 of the box and having the brace 17 secured to it; the free ends of the bracings are passed through slots 19, 20 in the box and retained in position over projections 21 in the same manner as the ends of the tabs 4. Bracings may be arranged below the flyleaf for securing articles thereunder or bracings may be arranged both above and below a flyleaf; the bracings may be arranged diagonally across the box.
Patent GB-1027361-A (GB)
Title: Method for emptying and filling centrifuges and device therefor
IPC: D06B15/10
Filed: 1963-08-13
Abstract: 1,027,361. Spin driers. ALPA-LAVAL A.B. Aug. 13, 1963 [Aug. 27, 1962], No. 31903/63. Heading F4G. In apparatus for spin-drying textile fibres in two identical spin driers A, B which are operated alternately, each drum 2 is filled with material from a hopper 10 under the control of a valve 11 while accelerating the drum to an operating speed for centrifugal drying of the fibres, and the dried material is removed while reducing the drum speed by insertion into the drum of a pipe 3 telescopically mounted in an exhaust pipe-line 4. The end 6 of the pipe 3 is bevelled to form an angle of 45 degrees with the drum wall and the pipe is controlled by pneumatically or hydraulicallyactuated cylinder and piston 5.
Patent GB-1384925-A (GB)
Title: Solid refuse disposal process
IPC: C10B53/00
Filed: 1972-07-07
Abstract: 1384925 Treating solid refuse UNION CARBIDE CORP 7 July 1972 [9 July 1971] 31915/72 Heading ClK [Also in Division C5] Solid refuse 13 is fed into the drying zone 2 of the shaft furnace 1 and then passed through the thermal decomposition zone 3 and the combustion and melting zone 4; gas 14, containing at least 40% by volume oxygen, is fed into the bottom of the furnace at a ratio of 0À15-0À28 parts by weight oxygen per part of refuse. The gas 23 is produced at 180-500‹ F. and is scrubbed with water at 25 and dried in the condenser 26. A portion of the product gas 31, containing at least 50 volume per cent CO+H 2  and having a heating value of 200-350 B.T.U./ ft<SP>3</SP> at 70‹ F., can be burned to produce energy for separating oxygen from air by liquifaction to provide the gas 14. The effluent in the settling tank 28 below the scrubber 25 settles into an organic phase 29 which can be recycled to the furnace together with fly ash filtered from the aqueous layer 30. The refuse generally reaches a maximum temperature of 3000‹F. and can be cooled by quenching with water. The process is carried out at above atmospheric pressure and under conditions which leave metals in the metallic state or as oxides.
Patent GB-1454807-A (GB)
Title: Separation of gas mixtures composed of water vapour hydrocarbon and air
IPC: F25J3/08
Filed: 1974-07-19
Abstract: 1454807 Separating hydrocarbons and water from air by condensation LINDE AG 19 July 1974 [20 July 1973 5 Oct 1973 (2) 20 Dec 1973] 32001/74 Heading B1B Hydrocarbons and water in the vapour state are separated from air by condensation and deposition of solids in a cooled heat exchanger which, when fully charged with solids, is regenerated by indirect heating. Two alternating heat exchangers may be employed whereby the gaseous mixture to be separated is first passed through a fully charged heat exchanger as the indirect heating medium. The separation of water and gasoline from air is described.
Patent GB-949913-A (GB)
Title: Improvements in or relating to diamond scribers
IPC: C03B33/12
Filed: 1962-08-21
Abstract: 949,913. Diamond tools. TEMPRESS RESEARCH CO. Inc. Aug. 21, 1962 [Sept. 11, 1961], No. 32090/62. Heading B5E. A scriber comprises a diamond element of generally polyhedron shape having a truncated pyramidal portion 15 of which the end face 17 and sides 26 adjacent the end face intersect to form a plurality of spaced scribing points 18. As shown in Fig. 4, the diamond element is of octahedron shape, the sharp edges of the upper part being removed to form flats 28 and the point removed to form the truncated end face 17. The diamond element is secured in the socket 12 in the end of a shank 10 by means of a matrix of a powdered metal such as tungsten carbide.
Patent GB-1515793-A (GB)
Title: Flameless reboiler for reconcentrating liquid desiccant
IPC: B01D3/00
Filed: 1976-08-02
Abstract: 1515793 Flameless reboiler MALONEY-CRAWFORD TANK CORP 2 Aug 1976 32124/76 Heading B1B A reboiler for reconcentrating liquid dessicant, e.g. di- or tri-ethylene glycol used for drying natural gas, through utilization of exhaust gas from a prime mover comprises an upper reboiler drum 12 subdivided by weirs 24, 26 into a central chamber 18, a liquid holding chamber 20 and a water-lean dessicant chamber 22 and a lower chamber 14. The lower chamber 14 is connected to the central chamber 18 of the upper drum 12 by means of a plurality of finned riser tubes 34 passing through the heating section 16 through which flow a hot exhaust gas stream 78. In operation, cool water-rich dessicant is fed via a coil (54 in the top of a distillation column 50 mounted on the upper reboiler thence to a surge tank 58 through a heat exchanger coil 62, and from there to the lower section 56 of column 50 and into the holding chamber 20. From here it flows through conduit 32 to the lower chamber and is circulated up the risers 34 and back down external conduits 40. Water-lean dessicant flows over adjustable weir 26 and via conduit 66 to the surge tank whence it exits at 68 for return to the drying process. Water vapours pass into the distillation column 50. The temperature of the liquid dessicant is controlled by regulating the flow of hot gas stream with a butterfly valve 48 activated by a sensor in the main reboiler section 18.
Patent GB-388871-A (GB)
Title: Improvements in or relating to the manufacture of artificial silk
IPC: D01D1/09
Filed: 1931-11-19
Abstract: <PICT:0388871/IV/1> The pressure-compensating device of apparatus for producing artificial filaments comprises a chamber with single flexible, p  resilient walls in contact with the spinning solution which passes through or outside the chamber on its way from the pump to the nozzles.  The device may comprise one or more hermetically sealed capsules with or without corrugated walls, and it may be placed between the pump and the filter candle, or just before the nozzles, or it may be placed within the casing of the filter.  The capsule may contain any elastic medium.  Instead of or in addition to the capsules, there may be provided a chamber with flexible and resilient walls, which is connected in series with the solution delivery system between the pump and the jets, the solution being made to pass through the chamber.  The flexible chamber may form the housing for the filter candle and it may be flexible at the sides or ends.  It may be of round, square, or elliptical cross-section with or without corrugated walls.  The material for the flexible walls may be hard-drawn brass, copper, or phosphor bronze.  As shown in Fig. 3, capsules 1 are placed in a container 6 between the pump 5 and the filter 4 to absorb pulsations and assist uniform extrusion of filaments through the jet 2.  As shown in Fig. 9 capsules 1 are placed within the filter casing which is provided with a flexible wall 3.  Fig. 1 shows a capsule on a larger scale.  As shown in Fig. 5, the casing 3 of the filter is provided with a flexible and corrugated wall.  As shown in Fig. 8, a flexible corrugated chamber 9 is placed between the filter and the jet 2 in such manner that the spinning solution flows directly through it.  In another arrangement, the flexible chamber is placed between the pump and the filter.
Patent GB-1132308-A (GB)
Title: Improvements in or relating to polyurethanes
IPC: C08G18/42
Filed: 1967-07-13
Abstract: 1,132,308. Polyurethane coating. HENKEL & CIE G.m.b.H. 13 July, 1967 [4 Aug., 1966], No. 32l87/67 Heading B2K [Also in Division C3] Surfaces of iron, zinc, copper, brass, dry beechwood, marble and rigid polyvinyl chloride are coated with a polyurethane prepared by mixing in a two-component spray-gun, one component comprising a commercial toluylene diisocyanate and a second component comprising hexanetriol, N - methyl - N - diethylaminoethyl - piperazine and a polyester prepared by reacting maleic acid, adipic acid, pentanediol - 1.5 and 2,2 - dimethyl - pronanediol - 1,3.
Patent GB-447270-A (GB)
Title: Improvements in and relating to golf clubs
IPC: A63B53/00
Filed: 1934-11-09
Abstract: 447,270. Golf clubs. BYRNE, E. L. W., 329, High Holborn, London.-(Eroydon Co., Inc. ; Burnett Avenue, Maplewood, New Jersey, U.S.A.) Nov. 9, 1934, No. 32316. [Class 132 (ii)] A golf club tubular metal shaft has a tapered section 4, Fig 1, reversely taperec section 5, uniforn section 8 and diminishing tapered handle section 10. Alternatively, the uniform section may continue to the end which will then have a cylindrical wooden plug 40, Fig. 2 with widening conical end 41, rabbeted at 43 where the handle leather is tacked on and with a finishing knob 46 screwed on The reverse tapers 4 and 5 may have a shoulder 6 between In a further modification, after the reverse taper, the shaft con. tinues in a taper 15, Fig. 3, increasing to the handle part 11<1> which is a cylinder, or in a further alternative form the reverse taper may be followed by a long taper diminishing in diameter to the top end of the handle. In all cases the taper for fitting in the hosel of the metal head has an angle with the shaft axis of between 2¢ and 3¢‹. The tube shaft may be made of a flat strip with edges bent together and attached by welding or otherwise. Specification 447,319 is referred to.
Patent GB-342314-A (GB)
Title: Process for the manufacture of rubber-like masses and articles therefrom
IPC: C08F236/04
Filed: 1929-08-30
Abstract: In the process of the parent Specification in which a diolefine is polymerized in the presence of styrol, the styrol is replaced by other olefine benzenes such as polyvinyl benzenes, containing two or more vinyl groups attached to a benzene nucleus, or nuclear or side chain homologues thereof or of styrol.  In an example, 50 parts of butadiene and 15 of a -methylstyrol are emulsified with 60 parts of water and 6 parts of diethylaminoethyloleylamide hydrochloride and polymerized with agitation for 4-5 days at a temperature of about 60 DEG  C.ALSO:In the process of the parent Specification, for the manufacture of rubber-like or other plastic masses by polymerization of a diolefine in the presence of styrol, the styrol is replaced by other olefine benzenes such as polyvinyl benzenes, containing two or more vinyl groups attached to a benzene nucleus, or nuclear or side chain homologues thereof or of styrol.  The products may be vulcanized and used for similar purposes to those of the materials according to the parent Specification.  In an example, butadiene and a -methylstyrol are emulsified with water and diethylaminoethyloleylamide hydrochloride, and polymerized.  The product is mixed with carbon black, zinc oxide, stearic acid, sulphur and a vulcanization accelerator, and vulcanized.ALSO:In the process of the parent Specification, for the manufacture of rubber-like or other plastic masses by polymerizing a diolefine in the presence of styrol, the styrol is replaced by other olefine benzenes such as polyvinyl benzenes, containing two or more vinyl groups attached to a benzene nucleus, or nuclear or side chain homologues thereof or of styrol.  The products may be vulcanized and used for similar purposes to those of the materials according to the parent Specification.  In an example, 50 parts of butadiene and 15 of a -methylstyrol are emulsified in water wth diethyl-aminoethyloleylamide hydrochloride and polymerized.  The product is mixed with carbon black, zinc oxide, stearic acid, sulphur and a vulcanization accelerator, and vulcanized at 3 atm. for 140 minutes.
Patent GB-152549-A (GB)
Title: Improvements in or relating to magnetic separators for treating ferrous ores
IPC: B03C1/14
Filed: 1919-12-24
Abstract: 152,549. Quinonero, F. Dec. 24, 1919. Magnetic separators.-A magnetic separator for ores has a series of electro-magnets 17 inside a rotating cylinder with peripheral projections arranged over a shaking table having an upper part 1 and a stepped lower part 2. This table is adjustable for height at a pivot 11 and is shaken by a cam 7 and a rod 9 assisted by a helical spring 10 provided with a rubber cushion and a plate spring 12 on which the table rests. The ore is fed on to the table from a hopper 5 and distributing-plate 4. At the step on the surface of the table, the ore is thrown on to the surface of the cylinder by a feed-roller 6. The magnetic portion is then carried forward to a collecting hopper 24, and the non-magnetic portion assisted by the shaking of the table is conveyed to the hopper 16.
Patent GB-469224-A (GB)
Title: Improvements relating to revenue stamps and the like
IPC: D21H21/46
Filed: 1936-11-27
Abstract: 469,224. Security paper. GRIFFIN, E. G. (American Bank Note Co.) Nov. 27, 1936, No. 32509. Drawings to Specification. [Class 96] [Also in Group XV] Safety revenue, postage, &c. stamps consist of paper, one surface of which is coated with an adhesive, the other having a finish containing a water soluble chemical and having printed thereon a design in an ink containing another water soluble chemical capable of reacting with the first to produce a smudge if the stamp is soaked in water. The chemicals mav be lead nitrate and sodium sulphide.
Patent GB-935433-A (GB)
Title: Improvements relating to electrical multiplying circuits
Inventor: KENT DAVID ERNEST
IPC: G06G7/162
Filed: 1958-10-13
Abstract: 935,433. Electric analogue computers. ELECTRIC & MUSICAL INDUSTRIES Ltd. Oct. 13, 1959 [Oct. 13, 1958; Feb. 18, 1959], Nos. 32591/58 and 5544/59. Class 37. [Also in Groups XXXIX and XL (b)] A multiplying circuit includes means for compensating for errors in the output thereof due to variations in the parameters of said circuit comprising means for applying a pilot signal to said circuit to produce an " error " signal representing said variations and means for applying said " error " signal to the circuit to counter the errors in the product output of the multiplying circuit. In the embodiment shown in Fig. 1, the invention is applied to the elimination of zero drift in a multiplier for reducing shading effects in a colour television camera by multiplying the video signal by a correcting signal. The video signal is applied to a current generator 2 and is multiplied, by a Hall plate 3, with a correcting signal applied at 5, and the product voltage corresponding to the corrected video signal is derived at 11. In order to compensate for zero drift or unbalance in the generator 2, a feed-back circuit is provided via gated amplifier 12 at detector 13, the operation of the circuit being as follows. When the video signal corresponds to a black there should be no input to the Hall plate from generator 2 and at this point the field gating pulses render amplifier 12 and oscillator 14 operative, the latter supplying the " pilot " signal to the other input of the Hall plate and a reference signal to detector 13. There may, however, due to zero drift or unbalance in generator 2 be an input to the Hall plate, an error signal will appear at the output of amplifier 12 corresponding to the product of the oscillator signal and said spurious signal from generator 2, the correcting D.C. signal being derived from detector 13 and applied to generator 2. A circuit diagram is given (Fig. 2, not shown). The embodiment of Fig. 3 is directed to a multiplying circuit for a stereo system in which an audio signal S 2  is multiplied by a control voltage S 1  by a Hall plate, but in which two higher frequency pilot signals (f1, f2 are employed, one with each main signal, the pilot signals being influenced by variations of resistance of the circuit due to temperature variations. The f1+f2 is filtered out by filter 57 and applied as a negative feed-back signal to vary the gain of amplifier 53 to compensate for said variations.