baber/WOPTO huggingface dataset:
Patent GB-482101-A (GB)
Title: Improvements in or relating to radio direction finding systems
IPC: G01S3/06
Filed: 1937-07-26
Abstract: 482,101. Directive wireless signalling. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. July 26, 1937, No. 20646. Convention date, July 24, 1936. [Class 40 (v)] Quadrantal and similar errors in a direction-finder are automatically corrected by applying an electrical factor which can conveniently be altered to meet varying conditions, such as a change in the working wavelength, or in the ship's loading. The uncorrected bearing is given by the position of the pointer Z<1> against the scale PS. Fig. 1, whilst the corrected bearing is shown by the image of a pointer Z2, Fig. 2, as reflected from a variable mirror SP on to the scale PS. The amount of correction is regulated, according to conditions, by choosing one or other of a number of lightmasks St which are carried by the rotating ring Zt. These vary the light applies from a lamp L1 to a photo-electric cell P, which in turn controls the deflection of the mirror SP through a magnet M. In Fig. 3, Z3 shows the corrected and Z 1 the uncorrected bearings as they appear on the indicator scale. In Fig. 5, the signal pick-up from a continuously-rotating aerial F is applied to one pair D2 of the deflecting plates of a cathode-ray indicator CT. The other pair D1 receives the amplified voltages from a photo-electric cell 1, which are controlled (a) by the orientation of the frame aerial through a light mask St1 which rotates with the frame and (b) by the correction factor derived from a light mask St2 and photo-electric cell P2 as previously described. The profile of the light mask is such as to show corrected and uncorrected bearings in alternation, so that both appear as stationary markings on the screen. The Specification as open to inspection under Sect. 91 also describes an arrangement in which the deflecting-mirror is operated by cam-and-lever mechanism. This subjectmatter does not appear in the Specification as accepted.
Patent GB-890867-A (GB)
Title: Mechanism for automatically blocking a lifting roller in venetian blinds
IPC: E06B9/322
Filed: 1960-06-13
Abstract: 890,867. Venetian blinds. FABERS FABRIKER A/S, CHR. June 13, 1960 [June 19, 1959], No. 20745/60. Class 20(3) Mechanism for automatically blocking a lifting roller for a lifting band in a Venetian blind when the blind reaches the floor or the lifting band tension is otherwise slackened, comprises a roller 6 round which the band 8 is wound and a blocking member 14 which is radially displaceable in an aperture 22 in the surface of the roller. An aperture 26 in the plate 2 is provided with a step 28 against which a stop 24 on the blocking member 14 may catch if it drops into a lower position due to slackening of the lifting tape (Fig. 3). Tensioning the tape holds the stop 24 out of engagement with the step 28.
Patent GB-1531794-A (GB)
Title: Ultrafiltration process for the concentration of polymeric latices
IPC: C08C1/075
Filed: 1976-05-20
Abstract: 1531794 Concentrating latices ABCOR Inc 20 May 1976 20782/76 Headings C3E and C3L [Also in Division B1] An aqueous polymer latex is concentrated by adding a compatible surfactant to the latex, feeding the latex to the feed zone of an ultra filtration semipermeable membrane device comprising a feed zone and a permeate zone separated by a semipermeable membrane adapted to permit passage of liquid phase but not polymer particles, removing a liquid-rich fraction from the permeate zone and removing a polymer-rich fraction from the feed zone, the surfactant being added to the latex before or during feeding of the latex to the feed zone in an amount sufficient to maintain the polymer particles in dispersion in the polymer-rich fraction and preventing the deposition on the membrane of coagulum from the latex and maintaining an acceptable flux rate for the process. The latex may be, e.g., of natural rubber or, as in the processes exemplified, of polyvinyl chloride or butadiene-styrene rubber.
Patent GB-1457233-A (GB)
Title: Imidazolyl-thiono-phosphoric-phosphonic- acid esters and ester-amides and their use as insecticides acaricides and nematicides
IPC: A01N57/32
Filed: 1975-05-16
Abstract: 1457233 Phosphorus-containing imidazole derivatives and intermediates therefor BAYER AG 16 May 1975 [2 July 1974] 20818/75 Headings C2P and C2C The invention comprises compounds of the general formula  wherein R is C 1 -C 6  alkyl, R<SP>1</SP> is C 1 -C 6  alkyl, C 1 -C 6  alkoxy or mono- or di(C 1 -C 6  alkyl)- amino, R<SP>11</SP> is CN or carbo(C 1 -C 5 )alkoxy, R<SP>111</SP> is C 1 -C 6  alkyl or C 2 -C 6  alkenyl and X is O or S. They are prepared by reacting a halide: (RO)(R<SP>1</SP>)P(X)Hal where Hal is halogen with a compound (III) optionally in the presence of a solvent or diluent, the compound III being reacted as such in the presence of an acid acceptor, or in the form of an alkali metal-, alkaline earth metal- or ammonium salt thereof. The products have insecticidal, acaricidal and nematicidal properties and may be used as active ingredients in conventional pesticidal compositions. The compounds of Formula (III) may be obtained (a) (in the case when R<SP>11</SP> is CN) by reacting a compound: R<SP>111</SP>NHCH 2 CN with a compound: C 2 H 5 OCONCS in the presence of alcoholate and then reacting the intermediate formed with a compound: AlKZ wherein Z is an easily removable radical, e.g. halogen, with further addition of alcoholate, or (b) (when R<SP>11</SP> is carbalkoxy) by reacting KCNS, and a compound: R<SP>111</SP>HNCH 2 COOR<SP>IV</SP> to give an intermediate where R<SP>IV</SP> is C 1 -C 5  alkyl and then cyclizing the intermediate and reacting the cyclized product with a compound AlkZ where Z is as defined above. Examples are given for the production of various specific compounds (including intermediates) by the above processes (a) and (b). isoPropylaminoacetic acid ethyl ester is obtained by passing HCl into a solution of in ethanol followed by the addition of water.
Patent GB-1156606-A (GB)
Title: Improved Flexible Printed Circuit and Method for the Preparation Thereof
Inventor: NEWTON JOHN ROBERT
IPC: H05K1/00
Filed: 1967-05-04
Abstract: 1,156,606. Laminates. DOW CHEMICAL CO. 4 May, 1967 [23 May, 1966], No. 20864/67. Heading B5N. [Also in Division H1] A process for the preparation of a printed circuit 10 comprises providing a conductive layer 12, 13 e.g. of copper foil having the configuration necessary for the intended circuit, providing on at least one surface of the said conductive layer e.g. by extrusion a layer 28, 29 of a resinous copolymer of ethylene and an acid comonomer, the acid comonomer consisting of an olefinically unsaturated mono- or polycarboxylic acid, an anhydride of one of such acids having from 3 to 8 carbon atoms per molecule or a partial ester of one of said polycarboxylic acids with an alcohol having from 1 to 20 carbon atoms, and providing on the external surface of said copolymer layer or, if there are two copolymer layers, on the surface of each such layer, a layer 20, 32 of an oriented linear polyester film, oriented nylon film, oriented polyvinyl fluoride film or oriented polypropylene film, the acid content of at least those parts of the copolymer layer or layers which are adjacent the conductive layer or adjacent a layer of oriented film being from 2% to 25% by weight of the total weight of such copolymer layer. Specified comonomers are acrylic methacrylic, crotonic, furmaric, maleic and itaconic acid, maleic anhydride, monomethyl maleate, monoethyl maleate, monomethyl fumarate and monoethyl fumarate. Bonding of the layers is preferably effected at elevated temperature, the oriented film being electrostatically treated or subjected to corona discharge and the metallic layer treated with polyethylene imine prior to bonding.
Patent GB-878758-A (GB)
Title: Improvements in and relating to the heating of zinc ovens
Inventor: QUINTIN ALBERT ANDRE JOSEPH
IPC: F23C99/00
Filed: 1960-06-14
Abstract: 878,758. Liquid fuel-fired zinc ovens. COMPAGNIE DES METAUX D'OVERPELTLOMMEL ET DE CORPHATIE. June 14, 1960, No. 20883/60. Classes 51 (1) and 51 (2). Zinc ovens having a number of retorts are heated by injecting fine-non-atomized streams of liquid fuel between the retorts so that the liquid fuel is vaporized before it strikes a solid surface. The retorts 2 of a reversible, regenerative zinc oven rest on plates 18 supported by uprights 17. Jets of fuel oil of about 1/ 2  mm. diameter are injected in the planes A-A, B-B of the uprights 17, to meet hot air from the regenerators 21 of the burning section of the oven. The injectors, Fig. 3, have cooling water jackets 8, 9, and nozzles 11 producing a sheet of wet saturated steam to protect the nozzles in the non-burning section of the oven. The fuel injectors are arranged in groups of different diameters and inclinations to distribute the fuel evenly over the oven, and carbon monoxide, which may be taken from the retorts, is introduced at the bottom of the oven with the combustion air so as to ensure an even distribution of heat. Specifications 594,487 and 667,312 are referred to.
Patent GB-744694-A (GB)
Title: Improvements in and relating to speed control of electrical alternating current generators
IPC: H02P9/42
Filed: 1953-07-28
Abstract: 744,694. Automatic speed control systems. GILKES & GORDON, Ltd., G., STAGG, F. G., and STRIDE, P. J. E. July 28, 1954 [July 28, 1953], No. 20944/53. Drawings to Specification. Class 38 (4). A frequency sensitive detector controls a saturable reactor to vary an artificial electrical load on an alternator to maintain its speed constant with variations in the normal load. The alternator may be driven by a water turbine and supply a normal load of up to 5 KW. As described the frequency sensitive element is a parallel tuned resonant circuit.
Patent GB-970747-A (GB)
Title: Improvements in and relating to penstocks and sluice gates
Inventor: ROWLEY ROBERT
IPC: E02B13/02
Filed: 1962-06-01
Abstract: 970,747. Valves. HARTLEYS (STOKEON-TRENT) Ltd. July 1, 1963 [June 1, 1962; Aug. 7, 1962], Nos. 21116/62 and 30132/62. Heading F2V. [Also in Division E1] A penstock or sluice gate has rubber or rubberlike seals 4A, 4B, 4C on either the door or frame, or both, and is constrained to move vertically throughout almost the whole of its opening and closing movement on guide strips 16 and 17 so that the faces of the door are out of contact with the faces of the frame, and means are provided to bring the faces into sealing contact at the completion of closing, and out of contact at the beginning of opening, e.g. adjustable pins 7 and 8 on the frame, swivelling cams 9 and 10 on the door and short ramps 12 and 13 on strips 16 and 17. Outwards movement of the door is limited by guide strips 18. The spindle 21 has a forked end 23 with an angled slot 24 in which moves a pin 22 on the door 1 to allow for lateral movement of the door. The cams may be mounted on the frame and the pins on the door, the pins also co-operating with the guides 16 and 17. Wedges may be used in place of the cams and pins. Only one cam per side may be used.
Patent GB-675659-A (GB)
Title: Improvements relating to voltage regulators and reversers employing rectifiers
IPC: H03C1/58
Filed: 1948-08-10
Abstract: 675,659. Code telegraphy. ROQUET, R. J. C. Aug. 10, 1948 [Aug. 27, 1947], No. 21123/48. Class 40 (iii). [Also in Group XXXV] A voltage-regulating and reversing device for supplying an output circuit with a direct current voltage whose polarity can be reversed at will, the said voltage being maintained constant in absolute value independently of polarity reversals, is constituted by a network comprising a change-over switch, rectifying cells, a direct-current voltage standard and one or more auxiliary voltage sources and resistances, the arrangement being such that the voltage drop across a resistance connected between the associated voltage source and the output circuit adjusts itself so that the voltage applied to the output circuit is equal to the voltage of the voltage standard, and the arrangement of the network and the values of the resistances being chosen in such a way that the deviations of the actual voltage of the said auxiliary sources has a minimum or almost negligible effect upon the voltage across the terminals of the output circuit. In the arrangement shown, the modulating key M, which may be controlled by a telegraph transmitter, is associated with batteries E2, E<SP>1</SP>2 in an arm BD of a network comprising an arm EF of resistance r3 and two arms BE, FD, together with diagonals DE, BF including rectifiers C1, C2, C3, C4. When the switch is moved to the position (1) the voltages at the corners of the network are such that current passes in the arms BE, FD and the diagonal arms are blocked, as indicated by Fig. 2 (not shown), so that apart from a small current which may flow through the battery E1, the standard voltage is applied to the output circuit VT at the terminals Al, A2. When the arm M moves over to the position (2) the reversed voltages applied by battery E<SP>1</SP>2 at the points B, D alter the relative magnitudes of the voltages at the points B, D, E, F so that the rectifiers C2, C3 in the diagonals of the lattice.network become conducting, and effectively the potential of the standard source E1 is applied with reverse polarity to the output line VT as indicated by Fig. 3 (not shown). In a modification, Fig. 4 (not shown), the positive and negative potentials corresponding to E2, E<SP>1</SP>2 are derived from a single battery forming a diagonal of a Wheatstone bridge arrangement. It is shown mathematically in the Specification that if i1 is not exactly zero the variations of output voltage will be dependent on E2, E<SP>1</SP>2 and that the change of current or effective voltage is small and is a small fraction of the variation which would be produced by the variation of the voltage of the batteries E2, E<SP>1</SP>2 constituting the auxiliary voltage sources. The auxiliary voltage source or sources, the associated resistances and the change-over switch may be located at a distance from the remainder of the network and a single voltage standard may be employed to supply simultaneously a plurality of voltage-regulating and reversing networks.
Patent GB-692533-A (GB)
Title: Electric frequency converting circuit employing regenerative modulation
IPC: H03C1/06
Filed: 1951-09-07
Abstract: 692,533. Generating high-frequency oscillations. STANDARD TELEPHONES & CABLES, Ltd. Sept. 7, 1951 [Sept. 19, 1950], No. 21167/51. Classes 40 (vi). A regenerative frequency-changing circuit, designed to give an output voltage of constant amplitude, comprises a modulator 2, fed with a first input voltage 1, and passing its output 4 to an amplifier 3, the amplifier output 6 being fed back as the second input 8 to the modulator 1 through a bridge arrangement 7 comprising three normal resistors R1, R2, R3, Fig. 5, and a non-linear resistor R4 (e.g. a barretter). The circuit converts an input voltage 1 of frequency 2f and of varying amplitude into an output voltage 5 of frequency f and constant amplitude, suitable as a pilot signal for controlling the gain of repeaters in a carrier current system. The input voltage 1, Fig. 5, is fed to a bridge modulator 2 whose output is fed by a transformer T2 to a two-stage amplifier 3 comprising pentode valves VI, V2, each of which includes negative feed-back from a cathode resistor. Between two condensers C4, C5 of the intervalve coupling, a shunt to earth comprises two limiting rectifiers Re1, Re2 of opposite polarity and biased by connection to a potential divider R14, R11, R13 across the H.T. supply. Output 6 is taken from the valve V2 to the bridge 7, whose output 8 is zero when the input amplitude is such that the non-linear resistor R4 balances the bridge. The output voltage changes 180 degrees in phase as the input amplitude passes through this critical value. In the explanatory diaphragm, Fig. 4, the bridge output voltage 8 is plotted horizontally and gain or attenuation vertically. Curves 10, 101 show the attenuation of the bridge 7, and curves 11, 12, 13 the net gain of the modulator and amplifier, curve 11 being for the case when the limiter between the valves V1, V2 is omitted, curve 12 showing the effect of introducing the limiter, and curve 13 the effect of supplying feed-back to the amplifier V1, V2 through the circuit 9. The feed-back is positive when the input voltage to the bridge is below the balance voltage, and negative when above. The circuit operates at a point of intersection A or C of the attenuation curve 10 with the gain curves 12, 13, respectively, the curve 10<SP>1</SP> having no point of intersection with these gain curves. With the gain uniform, curve 11, operation at the intersection point B is impracticable, resulting in uncontrolled oscillation.
Patent GB-213237-A (GB)
Abstract: 213,237. Metallwerke J. Hirsche & S÷hne. March 19, 1923, [Convention date]. Void [Published under Sect. 91 of the Act]. Stands or supports.-Lifting jacks permanently connected to the car are operated simultaneously from the driver's seat by means of flexible shafts coupled to the engine or to an external source of power. In the construction shown in Fig. 1, the inner member of each telescopic screw jack is rotated by a flexible sbaft j driven from a short shaft h geared to a friction roller e adapted to engage a double friction disc d on the engine shaft. The pulley is operated by a hand-lever g so as to engage either flange of the disc d for raising or lowering. In a modification, the screw jack is replaced by a toggle-lever jack.
Patent GB-479291-A (GB)
Title: Improvements in swivel connections for trouser-braces and other strap-like members
IPC: A41F3/02
Filed: 1936-08-04
Abstract: 479,291. Braces for personal wear; hinges &c. SANDERSON, J., and GREEN, L. Aug. 4, 1936, No. 21437. [Class 141] [Also in Group XXV] In a swivel connection between two parts, one of which comprises a strip of webbing, the inner surface of the webbing which overlaps the other part is faced with a metal or other substantially rigid plate which is apertured to receive the pivot pin, and is formed with a series of teeth which extends .from side to side of the strip, and penetrates the webbing to relieve it from strain at the pivot. In the form shown in Figs. 1 and 2, both parts 11, 12, are of webbing, and are faced with thin metal plates 13 provided with toothed flanges 16, and with apertures 14 to accommodate a pivot pin 15. Washers 17 recessed at the centre thereof to accommodate the heads of the pivot pin maintain the webbing close against the plates 13. Each plate 13 may be formed with side extensions 18 which can be bent over to embrace the edges of the webbing. The invention may be applied to braces, Fig. 4, in which the shoulder straps 25, 26 are pivoted together at 24. The rear buttonhole tabs 27 are secured detachably to a slotted metal plate 20 pivoted between the facing plates referred to above, and the front buttonhole tabs 33, 34, are secured detachably to buckle members. 29, 30, respectively, provided at the ends of the straps 25, 26. When the tabs are removed, the braces may be converted into a. belt, hook extensions on the buckle member 30 detachably engaging a link 41 secured to the buckle member 29, Fig. 8, to fasten the ends of the belt.
Patent GB-777107-A (GB)
Title: Improvements in and relating to plastic bags and valves therefor
Inventor: AUSTIN-EAMES WILLIAM GEORGE
IPC: B65D30/24
Filed: 1953-08-04
Abstract: 777,107. Valve bags. QUELCH, H. A. Aug. 4, 1954 [Aug. 4, 1953 ; Oct. 27, 1953], Nos. 21455/53 and 29702/53. Class 94(2). A valve for a plastic bag comprises two layers of plastic, e.g., polythene sheet material in the form of a flattened tube with its ends joined by a pair of liquid-tight seams 2 such that the layers between the seams are urged together to form a self-sealing aperture 14. The layers are bead welded at 5 to enhance the sealing of the aperture 14 and welded together and to the open mouth of the bag at 12 to leave an outer aperture 13. To empty the bag a tube is inserted through the aperture 13 to urge the layers of material apart and open the aperture 14. The bag may be filled before sealing or, after sealing, by means of a tube inserted through the aperture 13. The bag may be made of natural or synthetic rubber, polythene sheet or paper or textile material suitably impregnated or laminated.
Patent GB-531489-A (GB)
Title: Improvements in the manufacture and production of watersoluble basic dyestuffs
IPC: C09B23/14
Filed: 1939-07-24
Abstract: 531,489. Dyes; Intermediate. I. G. FARBENINDUSTRIE AKT.-GES. July 24, 1939, Nos. 21459 and 21460. Convention dates, July 29, 1938 and May 5, 1939. [Classes 2 (iii) and 15 (ii)] Basic dyestuffs are prepared by condensing 1:3:3-trialkyl-2-mlethyleneindolines substituted by fluorine, chlorine, bromine or the trifluormethyl group in the 5-position or the methosulphates derived therefrom with basic aldehydes containing a tertiary basic nitrogen atom which is conjugated with the aldehyde group by at least one carbon to carbon double bond. The condensation is effected in the presence of an acid medium such as glacial acetic acid, alcoholic hydrochloric or phosphoric acid or acetic anhydride. The dyestuffs are suitable for. dyeing acetate artificial silk and also paper, silk, leather and cotton mordanted with tannic 5 - chlor - 1:3:3 - trimethyl - 2 - methyleneindoline and p - aldehydo - p<SP>1</SP> - ethoxy N - methyldiphenylamine, 1:3:3-trimethyl-2-methyleneindoline - # - aldehyde or 1 - methyl-2-phenylindol-3-aldehyde, (2 )5-chlor-1:2:3:3-tetramethylindolinemethosulphate and p-N-diethylaminobenzaldehyde, (3) nitrated 5-chlor-l:2:3:3-tetramethylindolinemethosulphate and p-aldehydep<SP>1</SP>-ethoxydiphenylamine ; (4) 5-fluor-1:3:3- trimethyl-2-methyleneindoline and p-N-diethylaminobenzaldehyde, p-aldehyde-p<SP>1</SP>-ethoxy-N- methyldiphenylamine, p - N - M -cyanethyl - N - ethylaminobenzaldehyde, p-N-dimethylaminocinnamaldehyde, 1-.3:3-trimethyl-2-methyleneindoline- # -aldehyde, or 1-methyl-2-phenylindol-3-aldehyde. The colours obtained on acetate artificial silk are also tabulated of dyestuffs prepared by condensation of 5-brom- 1:3:3-trimethyl-2-methyleneindoline with 1:3:3- trimethyl - 2 - methyleneindoline - # - aldehyde, 1 - methyl - 2 - phenylindol - 3 - aldehyde, p-N-diethylaminobenzaldehyde, p-aldehydopl-ethoxy-N-methyldiphenylamine ; p-N- #- cyanethyl-N-ethylaminobenzaldehyde and p- N-dimethylaminocinnamaldehyde and also by condensation of 5-trifluormethyl-l:3:3-trimethyl-2-methyleneindoline with p-aldehydo-p<SP>1</SP>-ethoxy-N-methyldiphenylamine and 1-methyl-2- phenylindol-3-aldehyde. The 7-chlor and 7- methoxy derivatives of the 5-halogen 1:3:3-trialkyl-2-methyleneindolines and the homologues containing ethyl and other lower alkyl groups in the 1 and 3 positions are mentioned. They may be made from the corresponding phenyl hydrazines which may be prepared by reduction of the diazonium salts derived from the appropriate halogenated anilines. p - Aldehydo - p<SP>1</SP> - ethoxy - N - methyldiphenyl - amine, p-N-omega-cyanethyl-N-benzylaminobenz - aldehyde, and 1:2:3:3-tetramethylincloline-5-aldehyde are prepared by introducing the aldehyde group into the corresponding tertiary bases by reacting the latter with the product obtained from phosphorus oxychloride and N-methylformylaniline and hydrolizing with alkali.