baber/WOPTO huggingface dataset:
Patent GB-597414-A (GB)
Title: Manufacture of azo-dyestuffs
IPC: C09B35/26
Filed: 1945-05-14
Abstract: Azo dyestuffs are manufactured by coupling one molecular proportion of tetrazotized 4 : 41-diaminodiphenylurea - 3 : 31 - dicarboxylic acid with two molecular proportions of a 1-phenylpyrazolone, or one molecular proportion of each of two different 1-phenylpyrazolones, containing, or each containing, an -SO2NH2 group in the phenyl residue; or by coupling such a pyrazolone with a diazotized 2-aminobenzene-1-carboxylic acid containing in the 5-position a substituent convertible into an amino group (e.g. a nitro or acylamino group), converting this substituent into an amino group (e.g. by reduction or hydrolysis), and condensing two molecular proportions of the aminoazo compound with one of phosgene.  The products are suitable for dyeing or colouring leather, wool, superpolyamide fibres, plastic masses and gelatine, and especially for dyeing or printing cellulosic fibres, e.g. linen, cotton, or artificial silk or staple fibres of regenerated cellulose.  They may be treated in substance, in the dyebath or on the fibre with an agent yielding metal, e.g. chromium, cobalt or especially copper.  In examples: (1) 4 : 41-diaminodiphenylurea-3 : 31-dicarboxylic acid (1 mol.) is tetrazotized and coupled with 2 mols. of 1-(31-or 41-sulphonamidophenyl)-3-methyl-5-pyrazolone or 1 mol. each of the 31- or 41-compounds; (2) 5-nitro-2-aminobenzoic acid is diazotized and coupled with 1-(31-sulphonamidophenyl)-3-methyl-5-pyrazolone, the nitro group is reduced by means of sodium sulphide, and the product is treated with phosgene in aqueous sodium carbonate solution; (3) cotton is dyed with the product of (2) from a bath containing sodium carbonate and, in the latter stages, Glauber salt, and is after-treated in the same bath with complex copper sodium tartrate, yielding a brown-yellow dyeing.  Specifications 215,769, [Class 2 (iii)], and 455,274 are referred to.  The Specification as open to inspection under Sect. 91 comprises also the use, as tetrazo components, of further substituted 4 : 41-diaminodiphenylurea-3 : 31-dicarboxylic acids, and, as coupling components, of other arylpyrazolones containing a sulphonamide group, including those in which the sulphonamide group is substituted on the nitrogen atom, e.g. by alkyl or hydroxyalkyl groups.  This subject-matter does not appear in the Specification as accepted.
Patent GB-441834-A (GB)
Title: Improvements in and relating to electric arc welding
IPC: B23K35/40
Filed: 1934-04-21
Abstract: 441,834. Uniting by fusion. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. April 21, 1934, No. 12063. Void [Abridged as open to inspection under Sect. 91 of the Acts, Oct. 23, 1934]. [Class 83 (iv)] In electric arc welding the electrode is formed during the welding process by bringing together a number of grooved wires or strips so as to provide one or more hollow spaces adapted to be filled with a flux in paste form or in the form of an asbestos or other cord. Grooved wires or strips 3, 4 are fed from drums 1, 2 by the feed rolls 5, 6 on the welding head and are brought together inside the nozzle 8 so as to form a hollow space into which paste flux is fed from a container 9 through a tube or into which an asbestos cord passing through the paste container is fed. The wires may be of semicircular section, or in cases where a paste flux only is used may be of the section shown in Fig. 3 to prevent escape of flux. The wire may be doubly or trebly grooved so as to produce a number of flux cores.
Patent GB-802383-A (GB)
Title: Improvements in or relating to electrolytic capacitors
IPC: H01G9/02
Filed: 1956-04-20
Abstract: 802,383. Electrolytic capacitors. MALLORY & CO., Inc., P. R. April 20, 1956 [April 29, 1955], No. 12088/56. Class 37. In an electrolytic capacitor comprising a tantalum anode, copper or silver cathode and sulphuric acid electrolyte, a depolarizer consisting of a sulphate of the cathode metal is added to the electrolyte in sufficient quantity for some of the depolarizer to remain undissolved, the solid depolarizer being in contact with the cathode but separated from the anode by an ionically permeable barrier layer. The depolarizer may be added in the form of an oxide, the action of the acid converting it to the sulphate. Sufficient depolarizer may be added to form a slurry with the electrolyte; alternatively it may be pressed into the capacitor cell to form a porous solid body which is permeated by the electrolyte. In the preferred arrangement, copper or silver sulphate 12 is compressed into the copper or silver cathode 10 and is separated from the sintered tantalum anode 15 by a porous spacer 18, the remaining space between the electrodes being filled with sulphuric acid whose concentration is between 5 and 75 per cent. The tantalum anode 15 is supported by a tantalum sheet 14 which is crimped over the cathode 10 with an interposed polytetrafluorethylene gasket 16. The depolarizer operates by permitting the liberation of cathode metal instead of hydrogen at the cathode when leakage currents flow; in order to ensure a smooth deposit at the cathode small quantities of glue, goulac, molasses, dextrose, phenol sulphonic acid and thiourea are preferably added to the electrolyte.
Patent GB-709859-A (GB)
Title: Improvements in the production of capillary-active condensation products
IPC: C07C43/23
Filed: 1952-05-14
Abstract: A process for the production of capillary-active condensation products consists in reacting a phenol or a naphthol which is not substituted by alkyl radicals containing more than three carbon atoms with more than one mol. of propylene or propyl or isopropyl alcohol per mol. of the phenol or naphthol and further reacting the phenol or naphthol thus propylated with ethylene oxide or with polyglycols in order to introduce also watersolubilizing groups into the molecules. The propylating agent may be propyl or isopropyl alcohol or propylene which may be pure (from the alcohol) or a propylene-containing gas obtained in cracking processes.  If the propylated phenol is reacted with just sufficient ethylene oxide to give a water-soluble product, the latter is a washing agent.  With greater amounts of ethylene oxide the products have emulsion-cutting action.  The products may be mixed with non-ionogenic, cationactive or anionactive dispersing agents, e.g. water-insoluble or badly soluble propylaryl-polyglycol ethers.  In examples, phenol is reacted with propylene using a boron fluoride catalyst and the propylphenol obtained is reacted with different proportions of ethylene oxide.ALSO:A process for the production of capillary-active condensation products consists in reacting a phenol or a naphthol which is not substituted by alkyl radicals containing more than 3 carbon atoms with more than one mol. of propylene or propyl or isopropyl alcohol per mol. of the phenol or naphthol and further reacting the phenol or naphthol thus propylated with ethylene oxide or with polyglycols in order to introduce also water-solubilizing groups into the molecules.  The propylating agent may be propyl or isopropyl alcohol or propylene which may be pure (from the alcohol) or may be a propylene-containing gas obtained in cracking processes.  Sulphuric acid, aluminium chloride or boron fluoride are suitable propylation catalysts.  If the propylated phenol is reacted with just sufficient ethylene oxide to give a water-soluble product, the latter is a washing agent.  With greater amounts of ethylene oxide, the products have emulsion-cutting action. The products may be mixed with nonionogenic, or cation or anion-active dispersing agents, e.g. water-insoluble or badly-soluble propyl-aryl-polyglycol ethers. In examples, phenol is reacted with propylene using a boron fluoride catalyst and the propylphenol obtained is reacted with different proportions of ethylene oxide.
Patent GB-815382-A (GB)
Title: Improvements in and relating to gear transmissions embodying friction clutches
IPC: F16D25/064
Filed: 1956-04-20
Abstract: 815,382. Friction clutches; reverse gearing. GOTAVERKEN A.B. April 20, 1956 [April 21, 1955], No. 12202/56. Class 80 (2). A fluid pressure operated friction clutch within a hollow gear wheel 3 comprises two discs 20, 21 slidden axially on a splined hub 22 to engage circular ribs and grooves of conical cross-section on their side faces with corresponding ribs and grooves on the inside walls of the gear-wheel when oil under pressure is admitted through a passage 38, the hub 22 forming part of a shaft 33 which is rotatably supported with respect to the gear by bearings 26, 27, the gear-wheel itself rotating within a surrounding casing 11 in bearings 14, 15. The arrangement is such that if the co-operating ribs and grooves on the discs 20, 21 and the side walls of the gear-wheel are not quite concentric, the shaft bearings 14, 15 are not affected. Further, engagement and disengagement of the clutch does not cause axial sliding movements of the bearings. In the form shown, the bearings 26, 27 are ball bearings, but alternatively they may be roller or plain bearings. The clutch is biased to the disengaged position by dished spring rings 23, and a spacer ring 39 maintains a limited degree of separation between the discs 20, 21 when the clutch is disengaged. In one modification, Fig. 3 (not shown), the outer races of a pair of ball bearings supporting the shaft in the gear-wheel are mounted in annular recesses in the walls of the gear-wheel, and have their inner races mounted on shoulders on the shaft hub. In a further modification, Fig. 4 (not shown), a single ball bearing supports the end of the shaft within an axially projecting sleeve fast with one wall of the gear. A forward-reverse gear, Fig. 1 (also not shown), is described in which an input shaft carries a gear-wheel meshing a large clutch gear-wheel according to the invention on a countershaft carrying a small gear-wheel meshing a gear-wheel on an output shaft, the clutch gear-wheel meshing a second clutch gear-wheel according to the invention on a second countershaft also carrying a gear-wheel meshing the gear-wheel fast on the output shaft. Specification 684,886 is referred to.
Patent GB-326070-A (GB)
Title: Process for the production of a synthetic resin
IPC: C08G12/12
Filed: 1929-04-19
Abstract: 326,070. Keller, A. V. April 19, 1929. Urea-formaldehyde and like condensation products.-Resinous products are prepared by condensing urea or its derivatives, such as mono- or di-methylurea, acetylurea, and urea hydrochloride, with formaldehyde or paraformaldehyde in the presence of copper sulphate. An example is given in which urea, commercial formaldehyde, and copper sulphate are heated until a liquid semicondensate separates out, whereafter the supernatant liquid is removed and the product is dried by heat and/or reduced pressure. It may then be mixed with wood flour or other filler and the mixture moulded, with or without addition of colouring materials, &c. The greenish-blue colour of the semi-condensate may be removed or reduced by chlorination or like bleaching means before adding the filler.
Patent GB-513963-A (GB)
Title: Improvements in or relating to the electrodeposition of nickel
IPC: C25D3/12
Filed: 1938-04-23
Abstract: 513,963. Electrodeposition of nickel. TENNANT, W. J. (Eaton Manufacturing Co.) April 23, 1938, No. 12254. Drawings to Specification. [Class 41] In order to prevent pitting, due to grain size, in the electrodeposition of nickel under conditions which normally produce a grain size growth which gives rise to pitting, one of the following substances is added to the bath:- phenol, a napbtho-quinone or phenolphthalein; or a sulphide, chloride, cyanide, carbonate, fluoride, oxide, or hydroxide of cadmium, zinc, tin, cobalt, or lead. The metal compound may be produced in the bath by the addition of suitable compounds thereto, and is usually employed in quantities varying from 1 to 2¢ grams per gallon. The bath may comprise a solution of nickel sulphate, nickel chloride, and boric acid, the pH value being adjusted to between 2 and 5.8, and current densities of the order of 75 amperes per square foot of cathode surface being employed. Where metal compounds are employed as addition agents, they may be formed by solution of the metal in the bath liquid, the metal 'being incorporated in the anode.
Patent GB-1097856-A (GB)
Title: Proximity fuze
Inventor: LAGERSTROEM KARL OLOF GUNNAR
IPC: F42C13/00
Filed: 1966-03-21
Abstract: 1,097,856. Proximity fuzes. DIRECTOR GENERAL OF FÍRSVARETS FABRIKSVERK. March 21, 1966, No. 12353/66. Heading F3A. A projectile proximity fuze which radiates sound or electromagnetic waves which are partially reflected by the target and received by the fuze, comprises a number of series or parallel connected impedance elements 1 in an electrical circuit for determining the sensitivity of the fuze, each impedance element being connected to a melting fuze 5, the terminals of the melting fuzes being connected to conductors 3, which penetrate an envelope 2 of the fuze but are insulated from the envelope by insulation members 4, the conductors terminating in plates 6 to which a voltage from an external source can be applied, whereby the fuze can be blown and the resulting impedance in the sensitivity-determining circuit altered. When the impedance elements are connected in series a melting fuze is connected in shunt with each element. When connected in parallel a melting fuze is connected in series with each impedance element.
Patent GB-635548-A (GB)
Title: Improvements in footwear and method of making it
IPC: A43B3/30
Filed: 1946-04-24
Abstract: 635,548. Making boots and shoes. CLARK, D. M. (Kamborian, J. S.). April 24, 1946, No. 12379. [Classes 17 (i) and 17 (ii)] The toe portion 1 of the upper for a shoe or slipper of the welt type and the counter also, if desired, is' preshaped to the shape of the portion of the last upon which it is to be lasted, except over the shoe bottom area by shrinking the marginal portion 5 of the upper to impart a concave shape to it. The lower margin of the preshaped upper is then assembled with and united to the margin of a thin flexible sock lining 6 and a welt strip 12, which latter is then turned outwardly to lie in a plane parallel to the bottom of the sock lining 6, and a last is introduced into the upper to force-last it, and the shoe completed. The toe end of the upper and counter may comprise an inner thermoplastic stiffening Figs. 1b, 2b respectively. These are softened before the last is inserted, i.e. prior to lasting by admitting steam into the end of the upper from a conduit 8 through a perforated pipe P. Specification 635,386 is referred to.
Patent GB-1461609-A (GB)
Title: Cooking stove
IPC: F24C15/10
Filed: 1974-03-20
Abstract: 1461609 Cooking stove controls LICENTIA PATENT-VERWALTUNGS GmbH 20 March 1974 [23 March 1973] 12421/74 Heading F4W An electric cooking stove comprises hot plates and an oven controlled by rotatable knobs 4 and push-buttons (6, Fig. 2), mounted on a switch housing 8 which is pivotally mounted at 10 in a frame 2 above and adjacent the oven door, whereby the housing 8 is movable from an open position in which the knobs 4 may be operated from above to a closed position in which the knobs 4 are inaccessible. The open position is defined by an angle 12 on housing 8 which engages an edge of the frame 2, and the housing 8 is releasably held in the open position by a stay 17 which is spring biased into a position engaging an abutment surface. In the closed position, the angle 12 depresses a plunger 14<SP>1</SP> of a switch 14 via a lever 13 to interrupt the power supply to the stove.
Patent GB-647299-A (GB)
Title: Pipe coupling
IPC: F16L37/252
Filed: 1948-05-07
Abstract: 647,299. Pipe couplings. M. B. G. CORPORATION. May 7, 1948, No. 12622. Convention date, June 17, 1947. [Class 99(i)] A sleeve 50 carries a coupling member 1 and receives and holds in axial alignment therewith a coupling member 15, the members being held against separation in the coupled position shown by means such as studs 54 of member 15 engaged in curved slots 53 of the sleeve, and against relative rotation by locking means, sucn as pins 55 of member 1 entered into sockets 56 of member 15, which are releasable only when a predetermined axial separating force is applied to the members. The sleeve may have a number of pins 51 projecting into axial grooves 52 of member 1 which then has a limited sliding movement in the sleeve, and axial separation of the members may be resiliently opposed by fluid pressure in an annular chamber 57, and a spring 65 disposed in the chamber and holding member 1 in its nomally advanced position. Spring- loaded valves 25, 40 may be disposed entirely within the members which are automatically closed when uncoupled. The chamber communicates with bore 3 of member 1 by ports 60 only when valve 25 is open. In a modification, the chamber is always open to fluid pressure.
Patent GB-1451180-A (GB)
Title: Alkylsulphonylphenoxypropanolamines
IPC: C07C315/04
Filed: 1975-03-26
Abstract: Alkylsulphonylphenoxypropanolamines of the formula I are prepared <IMAGE> in which the radicals R1 to R4 have the meanings stated in Claim 1, by reacting a corresponding phenol with a compound of the formula <IMAGE> in which X is halogen or a group of the formula <IMAGE> in which R5 is a group which can be eliminated by hydrogenation. Subsequently, either the resulting halogen compound is condensed with an amine of the formula H2N-R1, or the resulting amine is hydrogenated to remove the group R5. The prepared compounds have good cardioselective,  beta -adrenergic blocking properties and are therefore suitable for the treatment of cardiopathies.
Patent GB-747566-A (GB)
Title: Improvements in or relating to automatic frequency control and search systems
Inventor: BURR DONALD WILLIAM
IPC: H03L7/04
Filed: 1953-05-06
Abstract: 747,566. Automatic frequency control systems. NATIONAL RESEARCH DEVELOPMENT CORPORATION. July 23, 1954 [May 6, 1953], No. 12661/53. Class 38 (4). The power output of a klystron type oscillator is maintained at a maximum not only when the oscillator is locked-on to a reference oscillation, but also during sweeping over its range; to this end, the oscillator 1, Fig. 1, has two tuning adjustments 2, 3 (e.g. the reflector potential and cavity dimension), one being controlled by the output of a discriminator 9 fed from a mixer 4 having the klystron output and a reference oscillation 7 applied to it, and the other being controlled over a control circuit 8; in the absence of a reference oscillation 7, the sweep circuit 12 operates to traverse the tuning adjustment 2 over its range, and simultaneously, the tuning adjustment 3 is appropriately varied to maintain -optimum power for each position of the first tuning adjustment. As shown in Fig. 2, the output of the klystron oscillator 13 is applied over 17 and mixed in 4 with a reference frequency from 7; the resulting signal is applied to a frequency discriminator 9 whose output is applied over 10, 10a to a negative feed-back amplifier 20 to control the potential of the reflector 14. An audio-frequency oscillation from 22 is fed over condenser 21 to the reflector 14, and as a result a second output 5 from the mixer 4 exhibits a D.C. varying at audiofrequency which after amplification in the D.C. amplifier 23 is applied to a phase-sensitive rectifier 24 whose reference oscillation is obtained from 22; the output of 24 is applied to 26 to control motor 27 and adjust the cavity to optimum power. Should the reference frequency at 7 change or fail, relay Y de-energizes to close contact Y1 and energize motor 29 to sweep potentiometer 18 over its range and thus vary the potential of the reflector 14 over its range; simultaneously, the circuit 26 is energized and motor 27 adjusts cavity 15 over its range, making contacts 31, 32 and 31, 33 at each end to reverse motor 29, so that the potential of reflector 14 is varied in synchronism with the tuning of cavity 15. When a reference frequency appears at 7, relay Y is energized so soon as the frequency of klystron 13 nears the reference frequency, and contact Y1 is opened to stop motor 29, while motor 27 stops so soon as the optimum power is developed in lead 17. The potentiometer 18 may be of the continuously rotatable type, and the tuning may be obtained by adjusting cavity 15 and power optimized by adjusting the potential of the reflector 14. Specifications 641,900, 655,553, 670,238 and 718,722 are referred to.
Patent GB-495688-A (GB)
Title: Method of manufacturing biscuit bread
IPC: A21D2/38
Filed: 1938-04-28
Abstract: Grain, particularly rye, is cleaned, allowed to germinate in p  flat layers and crushed; water is added to make a very watery dough which is formed into a flat strip and after preferably being perforated or provided with incisions is baked for a short period. The biscuit bread thus formed is preferably dried.  Yeast may be added to the watery dough.
Patent GB-111819-A (GB)
Title: Contrivance for Cleaning Gun-barrels and other Tubes.
Inventor: PEDERSEN HANS
IPC: A47B21/02
Filed: 1917-09-04
Abstract: 111,819. Pedersen, H. Sept. 4. 1917. Ordnance, cleaning; machine guns.-Consists in a device for eleaning gun barrels &c., comprising a brush or the like g carried by a metal ribbon f which, together with a second ribbon or cord e, is wound spirally on a shaft b in between two disks c, d. When the ribbon or cord e is pulled, the ribbon f is unwound from the shaft and the brush is pushed along the barrel or tube h. The two ribbons or the ribbon and cord are rewound on the shaft, to effect the reverse movement, by a crank handle a.
Patent GB-1302906-A (GB)
IPC: B29C44/34
Filed: 1970-03-17
Abstract: 1302906 Moulding foamed materials UNIROYAL Inc 17 March 1970 [18 March 1969 (4)] 12684/70 Heading B5A An apparatus for moulding foamed materials comprises a mould 120 having a port 130 connected by a pipe 122 to a tank 100 containing liquid foamed material 106. Pipes 140, 102 supply pressurized gas and liquid foamed material to the tank, the gas supply including a valve 142 responsive to gas pressure in the tank, to control gas flow to the tank 100 to maintain a constant pressure. A paddle wheel 110 is provided in the tank 100 to sense the presence of foamed material above a level 108, and actuate a switch 114 which in turn controls a valve 104 to regulate the flow of foamed material to the tank through pipe 102. A second pressurized air inlet 150 controlled by a solenoid operated valve 152 responsive to a valve 124 in the pipe 122 allows air at a higher flow rate than the first supply, to enter the tank as the material flows out into the mould. The mould comprises a vessel 134 and top plate 132 with corresponding angled edges (see Fig. 2, not shown), an air outlet 133 and a filler port 130. The port 130 has a conical surface (170) in which a removable spherical nozzle 128 of pipe 122 fits. A manually operated hinged cover 160 is provided with a magnetic latch (172, 174), to close the mould when nozzle 128 is removed. A back pressure valve 126 is also located in the pipe 122 to terminate the flow of material to the mould when the mould is full.