baber/WOPTO huggingface dataset:
Patent GB-230920-A (GB)
Title: Improvements relating to the manufacture of azo dyestuffs and of intermediate products from which they are formed
IPC: C09B41/00
Filed: 1923-12-19
Abstract: Derivatives of arylamides of o-oxycarboxylic acids are produced by replacing the labile hydrogen of such an arylamide, or of the acyl (acetyl, benzoyl, &c.) derivative of such arylamide, with the residue of a quaternary ammonium base of the heterocyclic aromatic series; the arylamide is treated with the heterocyclic base or the quaternary ammonium compounds thereof such as pyridine, or its hydrochloride, methyliodide, ethyliodide, benzyliodide, isobutylchloride, &c.  The compounds have the probable formula <FORM:0230920/2/1> where R = a benzene or naphthalene radicle, R1 = alkyl, aralkyl, or hydrogen, R2 = hydrocarbon residue of a heterocyclic aromatic compound.  According to examples (1) the disodium or potassium salt of 2 : 3-oxynaphthoic anilide is treated in alcohol with pyridine methyliodide and the methylpyridinium compound of the arylide isolated by pouring into water; (2) the O-acetyl compound of 2 : 3-oxynaphthoic anilide is treated with excess of pyridine; (3) the 2 : 3-oxynaphthoic anilide is treated with the molecular proportion of pyridine or its hydrochloride.  Acyl derivatives of 2 : 3-oxynaphthoic anilide are obtained by treating the anilide with acetic anhydride, benzoyl chloride, acetyl chloride or other acid chloride; probably acetyl chloride yields the O-acetyl compound and acetic anhydride chiefly the N-acetyl compound.  Azo dyes; lakes.-The above-described derivatives of amides of o-oxycarboxylic acids yield azo dyes when coupled with diazo compounds either in substance, on substrata, or on the fibre.  The dyestuff from diazotized 3-nitro-4-toluidine and the pyridinium compound of O-acetyl-2 : 3-oxynaphthoic anilide or o-toluidide is described: lakes may be obtained by precipitating the dyestuff in the presence of barytes, china clay &c.  Stable mixtures for dyeing and printing may be made by mixing the new compounds with nitrosamines, a mixture of the pyridinium compound of O-acetyl-2 : 3-oxynaphthoic anilide and the nitrosamine from 3-nitro-4-toluidine being described.ALSO:Fast shades are produced upon the fibre by impregnating the latter with a derivative of an o-oxycarboxylic arylamide (or an acyl derivative thereof) of the general formula <FORM:0230920/15/1> where R=a benzene or naphthalene residue, R1= alkyl, aralkyl, or hydrogen, R2 = hydrocarbon residue of a heterocyclic aromatic compound, and dyeing or printing with a diazo compound.  The compounds may also be mixed with nitrosamines, printed on the fibre and developed in the usual manner.  Examples are given in which red and blue shades are obtained from alkaline or aqueous pyridine solutions of the pyridinium compound of 2 : 3-oxynaphthoic-anilide or o-toluidide and the diazo or tetrazo compounds of 3-nitro-4-toluidine, o-dianisidine, and a mixture of the latter with benzidine.  The dye baths are more stable than those produced from the arylides of 2 : 3-oxynaphthoic acid themselves and do not require addition of formaldehyde, turkey-red-oil &c.
Patent GB-442490-A (GB)
Title: Improvements in permanent magnets
IPC: C22C38/22
Filed: 1935-11-18
Abstract: Permanent magnets are made from steel alloys containing 2-6 per cent of chromium, 0,8-1,2 per cent of carbon, and 0,6-2 per cent of silicon, with or without up to 1,5 per cent of molybdenum, or 2 per cent of tungsten, or both.  The ratio of carbon to silicon is preferably between 1 : 0,7 and 1 : 2, and the ratio of chromium to silicon between 2 : 1 and 5 : 1.
Patent GB-1507554-A (GB)
Title: Time division communication systems
IPC: H04Q11/04
Filed: 1975-07-31
Abstract: 1507554 T.D.M. exchange systems WESTERN ELECTRIC CO Inc 31 July 1975 [2 Aug 1974] 31987/75 Heading H4K In a t.d.m. system in which a number of receivers 7 are coupled by respective switches 9 to a common receive highway 10, means 28 comprising a pulse splitter are provided between a transmit highway 12 and said receive highway 10 for supplying in each time slot a pair of opposite polarity pulses to said receive highway 12 for each single unipolar pulse on the transmit highway and a respective one of the switches 9 is operated in each time slot for a period such that only one of said opposite polarity pulses is coupled to the respective receiver. By making the energy content of each of the opposite polarity pulses equal, the energy coupled, due to stray capacitance, to receivers whose switches 9 are closed is substantially zero and hence crosstalk is reduced. The PAM system without the pulse splitter is basically that of U.S.A. Specification 3,787,631. Integrated circuits may be used.
Patent GB-305315-A (GB)
Title: A telescopic clothes airer
IPC: A47C21/02
Filed: 1927-11-30
Abstract: 305,315. Brinkworth, G. C. Nov. 30, 1927. Brackets and racks; garment racks. -A telescopic rack for airing clothes &c. consists of a bracket for attachment to a mantelpiece &c. and rigidly carrying telescopic tubes 7 having at their ends metal hangers 14 supporting fixed transverse rails 16 which may be telescopic. Two or more telescopic tubes may be spaced apart to carry transverse rails between them. The metal hangers 14 may be U-shaped or may embrace the rail and be suspended at one side only. The tube 6 receiving the telescoped tubes has a lug 11 and a lip 12, and sockets 5 have a slot whereby the tubes niay be detached.
Patent GB-1012248-A (GB)
Title: Process for the production of disazo dyestuffs which are difficultly soluble in water
IPC: C09B43/30
Filed: 1963-08-15
Abstract: The invention comprises disazo dyes free from water-solubilizing groups which dissociate acid in neutral water and from metal complex-forming groups, of formula <FORM:1012248/C4-C5/1> wherein A and D are radicals of the benzene series and B is an amino group which may be substituted an alkoxy group having at least 4 carbon atoms, a cycloalkoxy group, an aralkoxy group or an aryloxy group which may be ring-substituted.  The dyes are prepared by coupling a diazo compound of an aminoazo dye H2N-A-N = N-D with a compound of formula <FORM:1012248/C4-C5/2> wherein X is hydrogen or a substituent replaceable by the diazo group (e.g. -COOH) or by condensing a disazo dye sulphonyl halide of formula <FORM:1012248/C4-C5/3> wherein Z is chlorine or bromine with an appropriate amino or hydroxy compound. The dyes may be used to colour cellulose acetate, synthetic polyamide, polyacrylonitrile and, in particular, polyester fibres in red to violet shades.  In examples:  (1) the disazo dye 4-aminoazobenzene-->2 - naphthol - 6 - sulphon-N - methyl - N - b  - hydroxyethylamide is prepared; (2) 1 - (41 - phenylazophenylazo) -2 - naphthol - 6 - sulphonic acid is treated with phosphorus oxychloride to give the sulphonyl chloride which is condensed with g -methoxy-propylamine. Further examples are given.
Patent GB-1436175-A (GB)
Title: Vehicle having an oocupant knee protecting device
IPC: F16F7/12
Filed: 1973-07-06
Abstract: 1436175 Energy absorbing structures NISSAN MOTOR CO Ltd 6 July 1973 [10 July 1972 (2)] 32291/73 Heading B7B [Also in Division F2] A device for absorbing impact energy in a vehicle collision includes a shock absorbing member 32 comprising a base plate 36 secured to a vehicle transverse member 30 and extending downwardly therefrom and a superposed corrugated plate 38, and an impact receiving member 34 attached to the shock absorbing member 32, the arrangement being such that impact at member 34 deforms member 32 about transverse axis 41. The base plate may be flat or have vertical triangular corrugations (48) (Fig. 6, not shown). Plate 38 may have triangular semi-circular or rectangular (Figs. 2, 3, 4, not shown) section vertical corrugations.
Patent GB-397466-A (GB)
Title: Improvements in glow lamps and method of operating same
IPC: H05B41/39
Filed: 1931-11-21
Abstract: 397,466. Discharge lamps; television. BRAMAN, V. T., 264, Wyckoff Street, Brooklyn, New York, U.S.A. Nov. 21, 1931, No. 32318. Convention date, Jan. 15. Void [Published under Sect. 91 of the Acts]. [Classes 39 (i) and 40 (iii).] A glow - discharge lamp for use in photographically recording sound, and in television and like circuits, is energized by a current producing continuous ionization and is modulated bv an additional current. Circuits are described for lamps with (a) two anodes and a single cathode, and (b) two cathodes and a single anode. As shown in Fig. 3, the energizing current is supplied by a battery B<1> between the cathode K and an anode A<2> through a resistance R. The modulating voltage is applied across terminals T<1>, T<2> in a circuit between the cathode and an anode A<1> containing a battery B<2> and an impedance I, such as a resistance with or without inductance, a condenser C being connected across the impedance and battery. In a modification the battery B<1> is omitted, and the resistance R is connected between the anode A<2> and the positive terminal of the battery B<2>. In a further arrangement, Fig. 6, the anode A<2> is connected through an impedance I<2> with one of the terminals T<2>, T<1>, and a condenser C<2> is connected between the anode A<2> and cathode K.
Patent GB-648201-A (GB)
Title: Improvements in or relating to the extraction of hardness salts from all kinds of water by electrical treatment
IPC: C02F1/46
Filed: 1948-12-15
Abstract: 648,201. Electrolytic water-softening. COLLINGS, G. R. Dec. 15, 1948, No. 32412. [Class 41]. Apparatus for extracting hardness salts from water comprises two containers la, 2a connected by a pipe h, an. inlet c for water to be treated and an outlet l for softened water, the containers being provided respectively with granulated carbon 1f, 2f, electrodes 1e, 2e and at the top electrodes 3e, 4e connected by a wire k. Each container has a valve-controlled drain outlet near the bottom. The inlet of liquid to the containers is by way of funnelshaped openings covered with fine wire mesh 1d, 2d. As the liquid is passed through the containers it is subjected to electrolytic treatment, and water containing concentrated hardness salt ions is permitted to leak slowly away 'through the drain pipes 1g, 2g while softened water flows out through the pipe l.
Patent GB-321544-A (GB)
Title: Improvements in or relating to road pavements and the like
IPC: E01C5/12
Filed: 1928-11-06
Abstract: 321,544. Highways Construction, Ltd., and Rhodes, C. W. Nov. 6, 1928. Paving - blocks. - Paving blocks or slabs of compressed natural rock asphalt are provided with one or more grooves to form non-slipping surfaces. Fig. 5 illustrates a series of blocks laid to break joint so that the single inclined groove in each block forms continuous lines e across the surface. Fig. 7 illustrates an arrangement in which the grooves form continuous zig-zag lines g. Other arrangements are illustrated.
Patent GB-1351162-A (GB)
Title: Soft-nitriding procedure for steel and cast iron
IPC: C23C8/26
Filed: 1971-07-09
Abstract: 1351162 Carbonitriding iron and steel FABRICA DE UTILAJE SI PIESE DE SCHIMB METALOTHEHNICA 9 July 1971 [9 July 1970] 32428/71 Heading C7U Iron or steel is carbonitrided for 1 to 10 hours at 570  10C. in a mixture of methane, ammonia and oxygen in which the ratio CH 4 ; NH 3  is 1, the ratio (CH 4  + NH 3 ): O 2  is 25 to 30, and the ammonia dissociation rate is 35 to 40%.
Patent GB-1351000-A (GB)
Title: Multi-shaft turbojet engine
IPC: F02K1/00
Filed: 1971-07-09
Abstract: 1351000 Jet deflector MOTOREN-UND TURBINEN-UNION MUNCHEN GmbH 9 July 1971 [25 July 1970] 32470/71 Heading B7G A multishaft turbojet engine, suitable for V/STOL aircraft, comprises a front fan 4, a bypass duct 14 supplied with air from the front fan, and a plurality of jet deflectors S supplied with air from the by-pass duct, each deflector comprising a plurality of pivotally-connected elements 26, 27. When the vanes S are straight (full lines, Fig. 1) the air continues undeflected (arrow F), as for cruising flight, while when they are in the position shown in dotted lines the air is defected (arrow V) to provide vertical lift, and at intermediate positions deflection (arrow K) aiding short take-off is afforded. Two sets of vanes S may be located in ducts 18, 19 on either side of central engine casing 15. The vanes may be operated jointly with mutually rotatable tubular sections 29<SP>1</SP>, 30 and 31 (the latter having a variable nozzle 32), which constitute an exhaust jet deflector assembly.
Patent GB-1378354-A (GB)
Title: Amino acids and their use in photographic materials
IPC: G03C1/34
Filed: 1973-07-12
Abstract: 1378354 Amino acids ILFORD Ltd 12 July 1973 [12 July 1972] 32488/72 Heading C2C [Also in Division G2]  New compounds which reduce latent image regression in silver halide emulsions have the formula  wherein R 1  is a C 1-4  alkyl group and R 2  is a group of formula wherein R 3  and R 4  are hydrogen atoms or C 1-4  alkyl group, X is an anion and x is 0 or 1. The compounds are made by reacting a tertiary amine of formula where A is a halogen atom with a compound of formula in an aqueous alkaline medium.
Patent GB-172331-A (GB)
Title: Improvements in aircraft
IPC: B64C27/26
Filed: 1921-12-05
Abstract: 172,331. Pateras Pescara, Raul, Marquis of. Dec. 3, 1920, [Convention date]. Aeroplanes; helicopters; planes, arrangement and construction of.-A machine capable of flying horizontally and descending vertically is supported by a pair of surfaces 10, 11 mounted to rotate in opposite directions and adapted to be locked in parallel relation to one another to act as planes during forward motion or left free to rotate under the direct action of the air during a descent. The surfaces 10, 11 are of the section shown in Fig. 3 and have no pitch. The hubs 12, 13 of the surfaces are geared together by the bevel wheels 19 - - 22. Conical pieces 50, 51 splined to the hubs are adapted to be moved into contact with fixed surfaces 52, 53 by means of collars 25, 26 operated by a lever 27 through the linkage 28 - - 31 so as to slow down the rotation of the surfaces when required. When slowed down sufficiently, a reverse movement of the lever 27 brings the collars 25, 26 into engagement with projections 23, 24 on the propeller hubs so as to rotate therewith. Each collar is coupled, as shown in Fig. 2, to a piston 35 which displaces oil from a cylinder 44 into a cylinder 45 containing compressed air arranged above it, and towards the end of the stroke a projection 49 on the piston compresses a strong spring 48 so as to absorb the remaining energy of rotation. As this occurs, a projection 36 on the collar passes a spring-pressed pawl 37 on a plunger 38 which works in a cylinder 39 against an adjustable stop under the pressure of a spring 40. Recoil of the spring 48 is thus absorbed by the spring 40 and the collar is brought to rest in a definite position. Steering and balancing is effected by a lever 62 actuating an elevator 61 and a lateral balancing surface 60, and by a foot bar 64 actuating a rudder 63.
Patent GB-637418-A (GB)
Title: High speed electro-magnetic vibrator for tissue grinding
IPC: H02K33/08
Filed: 1947-12-10
Abstract: 637,418. Disintegrating animal &c. tissues. MICKLE, H. Dec. 10, 1947, No. 32589. [Class 59] '[Also in Group XXXV] Apparatus for the disintegration of animal and bacterial tissues comprises a ,pair of magnetic spring reeds each carrying a receptacle for a tissue containing emulsion and vibrated by an alternating current electromagnet spanning the reeds, the reeds being oppositely polarized by direct current coils. As shown, cups C<SP>1</SP>, C<SP>2</SP> containing tissues in emulsion with or without a grinding medium such as carborundum powder or silver sand are mounted on spring steel reeds B<SP>1</SP>, B<SP>2</SP> passing through gaps in a core E' carrying an A.C. fed coil and adjustably clamped between spring plates in a block A, the reeds being polarized by coils D<SP>1</SP>, D<SP>2</SP> fed with direct or rectified current. The tissue containers may have inward projections for. breaking up vortices.
Patent GB-1063852-A (GB)
Title: Plug valves
IPC: F16K5/08
Filed: 1963-08-19
Abstract: 1,063,852. Valves. DURIRON CO. Inc. Aug. 19, 1963 [Aug. 20, 1962], No. 32684/63. Heading F2V. The body of a rotary tapered plug cock has the larger end of the plug bore closed by a cap 28, Fig. 1, with an interposed sealing diaphragm 30; the other end of the bore has a sealing ring 36 around the plug stem 35 held in place by a follower 38 with a shoulder 39 that defines the rotation of the plug. An annular clearance is provided between the plug and body bore. Recesses 45, 50 around each body port 17, 18 include an expansion chamber 53, Fig. 3, whilst each recess has a radial wall to reduce the cold flow of a low-friction synthetic plastic seal 55 located therein. Axial pressure is applied to the larger end of the plug through a screw 61, Fig. 1, and the diaphragm 30. The seals (55, Fig. 6, not shown) may include a metal backing or reinforcing member (70) that may be perforated, as shown. The seals may extend a sufficient peripheral distance to overlie part of the plug throughbore when the cock is closed. The seals, which may be mounted on the plug, are made of polyethylene resins or derivatives, e.g. fluorocarbon resins. The body may be of any one of a number of specified corrosion resistant materials.
Patent GB-338992-A (GB)
Title: Improvements in or relating to electrical insulators
IPC: H01B17/02
Filed: 1929-08-01
Abstract: 338,992. Hermsdorf-Schomburg-Isolatoren Ges. Dec. 5, 1928, [Convention date]. Divided on 337,748 and addition to 289,709. Insulators.-The pin shaft of an insulator of the type described in the parent Specification in which, during casting-in, the pin is retained in position by a spring ring, is fitted with a second resilient ring 3 to abut against, and retain in position, the ring 1. The ring 1 may be interiorly supported by spheres or a spring ring 2, or the ring 1 may be increased in diameter after insertion in the insulator cavity. Specifications 297,613 and 337,752 are referred to.
Patent GB-1365049-A (GB)
Title: Method of regulating light emitting power of laser and apparatus  for effecting same
IPC: H01S3/097
Filed: 1973-07-10
Abstract: 1365049 Lasers M K DYATLOV E P OSTAPCHENKO V A STEPANOV and J N KULIKOV 10 July 1973 32734/73 Heading H1C The output power of a gas laser using a mixture of an inert gas and a vapour of a chemical element as the active medium is regulated- and may be enhanced-by superposing an alternating current on the D.C. current producing a gas discharge in the active medium, the alternating current being supplied by an A.C. source the frequency of which is adjusted to select the output power required. As shown in Fig. 3 the laser 1 comprises a gas discharge tube 5 formed with Brewster windows 6 which is located between external resonator mirrors 7, the gas active medium content comprising He-Se, He-Zn, He-Mg, He-Hg or He-Cd. The gas discharge electrodes 8 are connected to the series combination of a D.C. current source 3 and a transformer secondary winding 11, the transformer primary 12 being connected to an A.C. source 4 adjustable in frequency from 40 to 220 kHz. In a modification, Fig. 4 (not shown), the D.C. source is connected to the electrodes through a resistor and the A.C. source is connected to the electrodes through a capacitor. The amplitude of the alternating current applied to the electrodes should be about 0À01 of the D.C. current. It is stated that the superposed alternating current stabilizes the unsteady oscillatory condition of the laser when first switched on, and by reducing noise raises the maximum output obtainable above the optimum level.
Patent GB-324732-A (GB)
Title: Improvements in or relating to anti-dazzle devices for motor vehicle lamps
IPC: F21V14/08
Filed: 1928-11-09
Abstract: 324,732. Miller, J. A. Nov. 9,1928. Lantern screens.-Movable shutters 6, 7 normally nested together in front of the bulb 5 are adapted to be operated from the driver's seat to form a hemispherical screen disposed at one side of or above the bulb. The shutter 7 is moved by an abutment element 9 engaging the bulb, being pivoted at 8 upon the shutter 6 which is carried by a rod 22 secured by a sleeve 24 to a hollow piston 21 in a cylinder 16 fixed to the front lens 4 and connected to an air pump by a pipe 19. On operating the pump to compress the air in the cylinder the shutters are moved longitudinally towards the bulb 5 and when the abutment element 9, which is pivoted to the shutter 7 at 10, contacts with the bulb the shutter 7 is moved on its pivots 8 to the side of the bulb and forms with the shutter 6 a hemispherical screen. This movement compresses a spring 13 between a frame 11 carried by the abutment element 9 and a bracket 14 secured to the shutter 6, the spring being mounted on a rod 12 passing freely through a hole in the bracket 14. Further increase of pressure in the cylinder 16 causes the hollow piston to compress a spring 27 (stronger than the spring 13) arranged between the piston and the end of the rod 22, causing the piston and sleeve 24 to move rearwardly upon the rod. An inclined groove 28, Fig. 9, on the rod 22 engages a stud 9 on the sleeve 24 so that this movement rotates the rod and moves the screen to a position above. the bulb (Fig. 6). On release of pressure, the springs 27, 13 return the parts to the normal position shown in Fig. 1. The piston 21 is prevented from rotating by a guide rod 30 secured thereto and sliding freely through the flanged end of the cylinder 16. According to the first Provisional Specification the shutters may be carried by arms from the reflector.
Patent GB-814396-A (GB)
Title: Improvements in or relating to the cold separation of gas mixtures
IPC: F25J3/04
Filed: 1955-11-16
Abstract: <PICT:0814396/III/1> Crude argon from the side arm of an air rectification plant containing 2 to 3 per cent of nitrogen and 6 to 9 per cent of oxygen is freed of its oxygen content by reaction with a stoichiometric excess of hydrogen in the presence of palladium catalyst in chambers 33-38 arranged in series in respect of the argon flow but in parallel in respect of the hydrogen flow.  In operation crude argon entering an inlet 10 is forced by a compressor 15 into storage cylinders 21, 22 from which it is fed through a pressure regulator 26 and a flowmeter 28 to the first deoxygenator unit 33 after the addition of hydrogen having traversed a flowmeter 61 and a duct 71.  The reaction products traverse a cooler 39 and the resulting water collecting in a trap 45 runs into a drain 57 common to all the chambers whilst the partly purified argon is fed to the next chamber after addition of further hydrogen.  The argon leaving the chamber 38 and water trap 50 has an oxygen content of less than 5 parts per million and is freed of its nitrogen content by low temperature rectification (see Group XXVIII).
Patent GB-753347-A (GB)
Title: Process for the manufacture of granular washing and cleansing agents
IPC: C11D17/06
Filed: 1953-11-26
Abstract: Detergent compositions in granular form are obtained by mixing a detergent composition (or a component thereof) in powder form with the same composition (or a component thereof) in the form of an aqueous paste in such proportions that a granular product is obtained when the mixture is dried or allowed to solidify, if necessary with agitation but without the application of heat from any external source.  If the final composition is to contain substances sensitive to heat or to water, e.g. per-compounds or hypochlorites, these substances are included in the powdered portion of the mixture.  In examples (1) a powdered composition containing soap, soda, sodium pyrophosphates, magnesium silicate, sodium sulphate and sodium perborate is mixed with a paste not containing sodium perborate but otherwise of the same composition, (2) a powdered composition containing an alkyl-benzene sulphonate with 10-15 carbon atoms in the alkyl group, an alkyl sulphonate of 12-14 carbon atoms, an alkyl sulphonate of 12-18 carbon atoms, soda, sodium sulphate and magnesium silicate is mixed with a paste of the same composition.