baber/WOPTO huggingface dataset:
Patent GB-457196-A (GB)
Title: Manufacture of dyestuffs and intermediate products of the anthraquinone series
IPC: C09B1/26
Filed: 1935-04-18
Abstract: Dyestuffs or intermediates are made by reacting an a -halogen-anthraquinone-b -(mono-or di-) sulphochloride, containing one or several a -halogen atoms, and in which the halogen and sulphochloride group or groups are the only nuclear substituents, with a primary or secondary, aliphatic or aromatic amine.  The reaction is advantageously carried out by forming first the mono- or di-sulphonamide in a suitable medium, in presence of an acid binding agent and if necessary at high temperatures, and then exchanging the a -halogen atoms similarly but with the addition of copper or a copper compound.  Those products which contain sulpho-groups (e.g. those made from sulphonated amines) are acid wool dyestuffs, and the others may be converted thereto by sulphonation.  In examples (1) 1 - bromanthraquinone - 2 - sulphochloride is reacted with taurine to give 1-bromanthraquinone - 2 - sulphotauride, which is then reacted with o-phenylene diamine (red-brown), and with 2-hydroxy-5-amino-1-benzoic acid (violet tints, grey-brown when afterchromed); (2) 1-iodoanthraquinone-2-sulphochloride is reacted with methyltaurine to give 1-iodoanthraquinone-2-sulphomethyltauride, which is then reacted with o-phenylene diamine (brown); (3) 1 - bromoanthraquinone - 2 - sulphomethyltauride (made similarly to the 1-iodocompound) is reacted with m-amino-dimethylaniline (yellowish-green), 2 - aminodiphenylamine - 2 - sulphonic acid (blue), 4<1>-aminodiphenylmethane - 3 - methyl - 4 - hydroxy - 5 - carboxylic acid (bordeaux-red), 7 - amino - 2.3 - hydroxynaphthoic acid (brown), sodium 2<1>-aminodiphenylamine - 2 - nitro - 4 - chloro - 6 - sulphonate (yellowish-brown); (4) 1-bromanthraquinone-2-sulphochloride is reacted with diethanolamine to give 1-bromanthraquinone-2-sulphodiethanolamide, the bromine atom of which may be replaced as described above; (5) 1.5 - di - iodoanthraquinone - 2.6 - disulphochloride is reacted with methyltaurine to give the disulphomethyltauride, the iodine atoms of which may be replaced by different bases; (6) 1 - bromanthraquinone - 2 - sulphochloride is heated with 2-hydroxy-3-amino-5-sulphobenzoic acid, the product being reacted with o-phenylene diamine.  (brown green when afterchromed.)  The colours refer to the dyeings on wool. The anthraquinone sulphochlorides used as starting materials may be obtained by treating the corresponding anthraquinone sulphonic acid or its alkali salt with a phosphorus halide or with chlorsulphonic acid.
Patent GB-1106313-A (GB)
Title: Novel catalysts for the oxidative chlorination of ethylene
IPC: B01J23/72
Filed: 1966-03-18
Abstract: Ethylene is oxidatively chlorinated principally to 1:2-dichlorethane by reacting ethylene, hydrochloric acid and either air or oxygen in the presence of particles of porous alumina coated with 1.5 to 8% of silicon and impregnated with 2 to 10% of copper and 0.5 to 4% of alkali metal.  Comparative examples describe the oxidative chlorination of ethylene using 25% excess air, 12.5% excess HCl at 260 DEG C. in a fluidized bed.ALSO:Al2O3 particles coated with 1.5-8% SiO2 are impregnated with 2-10% Cu and 0.5 to 4% alkali metal to yield oxychlorination catalysts.  Specified alkali metals are Na and K which may be affixed to the Al2O3 by use of N Na2SiO3 or K2SiO3 such that the requisite quantity of SiO1 is added simultaneously. The catalyst preferably has a surface area of 100-500 m2/gm and takes the form of spheres of 50 to 1500m  diameter.  The catalyst may be used in fluidised beds.  In examples the SiO2-coated Al2O3 is sprayed with an aqueous HCl solution containing CuCl2 and KCl, before drying at 120 DEG C for 5 hours.
Patent GB-858051-A (GB)
Title: Improvements in and relating to converting electric currents
IPC: H02M7/40
Filed: 1956-04-20
Abstract: 858,051. Converting. LEWIS, T. X. April 16, 1957 [April 20, 1956], No. 12098/56. Class 38(2). A contact rectifier with switch chokes 2, 2a supplies load 29 from centre-tapped secondary winding 1b of a supply transformer through periodically - operated contacts, comprising " make " contacts 5b and " break " contacts 5a so driven by synchronous motors 3b, 3a that contacts 5b both open and close before contacts 5a, and contacts 5a open only when the current through them is zero. To achieve the last result, motor 3a driving contacts 5a is energized in alternate half-cycles from the two halves of the converting circuit through current transformers 4a. These may be replaced by a mercury arc inverter (Fig. 7, not shown). To reduce any residue of load current in contacts 5a at break, grid-controlled valve 7 is made conducting and switch 6 is closed so that load current which remains or reverse current which has begun to flow can pass through the respective one of bridging valves 7, 8. Load current is diverted by transformers 14, 15 after switch 5b is closed. For starting a dummy load 30 may be connected by switch 31. In modifications a rotating commutator or other switch is connected as a diagonal across a bridge formed by saturable chokes, rectifiers and transformers, the four arms exhibiting equal transient impedances at the moment of break so that no current is flowing through the switch (Figs. 2, 9, 10, not shown). In a polyphase rectifier system a contact driving motor may be energized from current transformers on the A.C. side (Fig. 3, not shown), or D.C. side (Fig. 6, not shown), of the switches. Fig. 4 shows a circuit where the opening stage current is diverted from contacts 5a by transformer 12 and grid controlled rectifiers 13. The pair of rectifiers may be replaced by a single one (Fig. 5, not shown). In a modification of the circuit of Fig. 1, the by-pass current is arranged to operate a relay which controls a motor operating a phase changer in the supply to the contact driving motor (Fig. 3, not shown).
Patent GB-527868-A (GB)
Title: Improvements in or relating to pressure gauges
IPC: G01L7/04
Filed: 1939-04-21
Abstract: 527,868. Pressure gauges. BARNET INSTRUMENTS, Ltd., and WILLIAMS, W H. C. April 21, 1939, No. 12102. [Class 106 (ii)] Comprises a particular construction of " move ment " whereby the pointer can be adjusted relatively to the pressure-responsive element from outside the casing. The pointer 11 is connected by rack and pinion 13, 14 and link 16 with the free end of the Bourden tube 17. The quadrant 14 is pivoted to a movable mounting 18 part of which extends through the back of the casing 19. The mounting comprises plates 20, 21 distanced by studs 22 and dispersed on the forward side of a fixed support 23. The plate 20 is also secured to a boss 24 at the other side of the support 23 by studs 25 the distance between which is slightly greater than the width of the support 23. The boss 24 has a forwardly projecting extension 26 engaging frictionally a bore 27 in the support 23. The boss is of square section where it projects through the casing and may be given a limited angular movement relatively thereto and thus adjust the reading.
Patent GB-232794-A (GB)
Title: Improvements in and relating to systems of electric ship propulsion
IPC: B63H23/24
Filed: 1924-05-16
Abstract: 232,794. British Thomson-Houston Co., Ltd., (General Electric Co.). May 16, 1924. Alternating-current motors; machines with two or more armatures; field magnets, dampers and shortcircuited screens on poles of; pole-pieces. - In a ship-propulsion system, the secondary winding 8 of an induction motor, the primary winding of which is supplied from a generator, is cascadeconnected to the primary winding 9 of a synchronous motor. The secondary winding 8 and primary winding 9 are wound in slots in laminated rotor cores 20, 21 which are connected to a hub 22. The winding 9 comprises comparatively few turns operating at a low voltage and may be placed in closed slots, whereupon solid steel pole-pieces 28 can be used for the continuous-current excited stator of the synchronous motor. The skin effect of the pole-pieces 28 gives at starting a high-resistance characteristic, which may be modified by placing a squirrel-cage winding near the faces of the pole-pieces and located in longitudinal holes 29. The holes near the corners of the pole-pieces are drilled more closely than at the middle so as to produce an approximate sine-wave distribution of flux.
Patent GB-1502293-A (GB)
IPC: H01R39/60
Filed: 1975-03-24
Abstract: 1502293 Rotary interrupters FABBRICA ITALIANA MAGNETI MARELLI SpA 24 March 1975 [8 April 1974] 12119/75 Heading H1N A contact breaker arm for an ignition distributer comprises a body 1, Fig. 1, of insulating material secured to a metal spring blade 5 which carries the movable contact 6 and provides the electrical connection to a terminal while serving as a loading spring. The spring 5 may be shaped to provide a rigid concave section 5b near the contact 6 and is riveted (shown) or moulded to the body 1, Fig. 5 (not shown).
Patent GB-740773-A (GB)
Title: Improvements in and relating to automatic control systems for machines
Inventor: HULLS LEONARD ROBIN
IPC: G05B19/16
Filed: 1953-05-01
Abstract: 740,773. Controllers. ENGLISH ELECTRIC CO., Ltd. April 30. 1954 [May 1, 1953], No. 12121/53. Class 38(3) [Also in Group XXII] A controlling arrangement for the driving motor of a machine, e.g. shears, has a recording medium moving at a speed which is a function of the speed of an element of the machine from a recording to a pick-up device, the recording device recording a signal on the medium in correspondence with an operation of the machine and the pick-up device responding to the recorded signal to operate the driving motor. Rollers 2 feeding rod 1 from a rolling mill to shears 3 driven by a motor 4 drive through a reducing gear 5 a steel tape 8. Actuation of a switch 14 operates the motor 4 so that the shears 3 to make a cut and cause the recording device 9 to record a signal on the tape 8. The signal actuates the pick-up 10 and is erased by a device 11. The pick-up 10 in response to the signal operates the motor 4 so that the shears make a cut and cause the recording device to record another signal. The distance between the recording device 9 and the pick-up 10 is adjustable to determine the cut length of the rod. In a modification the tape is driven by a differential device. controlled by the speeds of two or more elements of the machine and also the spacing between the recording device and the pick-up may be controlled according to the positions of various elements of the machine.
Patent GB-977991-A (GB)
Title: Radio navigation system
IPC: G01S1/02
Filed: 1961-04-05
Abstract: 977,991. Radio direction finding. COMPAGNIE FRANCAISE THOMSONHOUSTON. April 5, 1961 [April 6, 1960], No. 12173/61. Heading H4D. A radio direction-finder for automatically controlling an aircraft to home on to a transmitter comprises an assembly of two spaced elongated end-fire aerials 3 and 4, Fig. 1, with the longitudinal axes parallel to the longitudinal axis of the craft, said assembly being rotated by a motor 6 about an axis parallel to the craft axis at a frequency f and the signals received by the aerials 3 and 4 being applied through respective frequency changers 9, 9<SP>1</SP> and I.F. amplifiers 10, 10<SP>1</SP> to a phase discriminator 12 to give an A.C. output component of frequency f and of amplitude and phase dependent on the homing error which is applied together with phase quadrature reference signals of frequency f from a generator 15 driven by the motor 6 to two synchronous detectors 13, 14 which produce D.C. control voltages proportional to orthogonal components, e.g. horizontal and vertical, of the homing error. As shown in Fig. 2a (end on view) the aerial assembly is rotated about an axis 17 midway between the aerials 3 and 4 but alternatively the rotation axis may be (1) at a point 18, Fig. 2b, along the line 3, 4 produced; (2) at a point 19, Fig. 2c, along the perpendicular bisector of the line 3, 4; or (3) at a point 20, Fig. 2d, coincident with the longitudinal axis of the aerial 4; in the latter case the aerial 4 may be replaced by two fixed aerials 4<SP>1</SP>, 411, Fig. 3, spaced symmetrically about the rotation axis. Any differential phase shift in the two aerial channels may be compensated by phase shifters 11 and 11<SP>1</SP> controlled by the D.C. output from the phase discriminator 12; alternatively the phase shifters may be inserted in the R.F. stages ahead of the frequency changers 9, 9<SP>1</SP>.
Patent GB-216512-A (GB)
Title: Improvements relating to electric lighting installations for motor vehicles or the like
IPC: H02J7/14
Filed: 1924-05-17
Abstract: 216,512. Saran, M. A. May 22, 1923, [Convention date]. Cut-out systems; electromagnetic switches. - In the lighting of motor vehicles from a dynamo D and a battery B, the circuit C' containing the main lamps P passes through windings 2, 3 and contacts a, a<1> of an electromagnetic switch, which, in case of a fault or short to earth, breaks the circuit C<1> and makes, through contacts b, b<1> an emergency lighting circuit containing a lamp P'. The switch is preferably constructed with two separate magnets for the windings 2, 3, and a common armature 13 restrained by a spring 14 and carrying two contacts 4, 4<1>.
Patent GB-862659-A (GB)
Title: Crank-shaft arrangement for internal combustion engines
IPC: F16D43/18
Filed: 1959-04-10
Abstract: 862,659. Crank-shafts; friction clutches. BACKLUND [nee LARSON], B. A. M. April 10, 1959 [April 10, 1958], No. 12233/59. Class 80 (2). [Also in Groups XXIII and XXVII] An output shaft 11a is journalled in one end of a hollow crank-shaft 1 of a single-cylinder two-stroke engine for a portable saw, and is driven by the crank-shaft through a centrifugal friction clutch 7. The clutch has weights 7a movable radially outwards by centrifugal force against spring pressure to frictionally engage a drum 8 fast with the output shaft, and is enclosed in a stationary casing 15. The opposite end of the crank-shaft carries a flywheel 2 acting as an air-cooling fan. In a modification (Fig. 3, not shown), the flywheel forms part of the driving part of the clutch.
Patent GB-554814-A (GB)
Title: Concentration of acidic minerals
IPC: B03D1/012
Filed: 1942-08-31
Abstract: 554,814. Concentrating ores. AMERICAN CYANAMID CO. Aug. 31, 1942, No. 12258. Convention date, Sept. 6, 1941. [Class 82 (ii)] [Also in Group IV] Acid constituents such as silica are separated from other constituents of phosphate, calcite, fluorspar, and like ores by flotation or other concentration in presence of a collector or promoter consisting of a compound of the general formula in which R<SP>1</SP> is hydrogen or an alkyl, aryl, aralkyl, cycloaliphatic, -C:NH.NH 2 , -C:O.NH 2 , or -C:S.NH 2  radical, and R is alkyl or an alkyl group containing oxygen, sulphur, or nitrogen, or salts of such compounds. The following are representative compounds: S-octyl pseudo thiomrea hydroiodide; S-lauryl pseudo thiourea hydrobromide; S-myristyl pseudo thiourea hydrochloride; S-cetyl pseudo thiourea hydrobromide; S-lauryl pseudo guanyl thiourea hydrobromide; S-lauryl mono-pseudo dithiobiuret; S-lauroyl aceto pseudo thiourea hydrochloride; S-(N- lauroyl-amino ethyl aceto)-pseudo thiourea hydrochloride; S-lauroyl pseudo N-phenyl thiourea hydrobromide; S-lauryl methoxy pseudo thiourea hydrochloride. The compounds may be made by reacting thiourea or a N-substituted thiourea with an alkyl halide or other alkylating agent, or by reacting thiourea hydrochloride or a N-substituted thiourea hydrochloride with an alcohol containing 8-32 carbon atoms, preferably using crude mixtures of such alcohols obtained by catalytic methods from hydrocarbons, or by reacting cyanamide with a mercaptan containing 8 or more carbon atoms.
Patent GB-851340-A (GB)
Title: Improvements in hydraulic control systems for agricultural tractors
IPC: A01B63/112
Filed: 1959-04-10
Abstract: 851,340. Tractor power-lift mechanisms. SOC. INDUSTRIELLE GENERALE DE MECANIQUE APPLIQUEE S.I.G.M.A. Apr il 10, 1959 [April 14, 1958], No. 12266/59. Class 79(1). In a hydraulic power lift system of a tractor, valve means are provided for selecting automatic load transfer to the tractor wheels from the plough &c. by a system sensitive to increase of draft force and including a second valve means operable by the driver to obtain load transfer when the wheels slip under conditions in which the automatic device does not operate as when travelling over slippery ground &c. The system may be applied to a tractor having a double acting lift cylinder 14 Fig. 3 which is manually positioncontrolled by a lever 32 through a servo valve 24 with a follow-up linkage 34, 38 coupled to the lift piston 18 In this case the supply lines 22, 23 to opposite ends of the cylinder 14 are closed by non-return valves 25, 26 which are operable by pistons 30 for return flow. The non-return valves 25, 26 may however be replaced by a shuttle valve or the system may be applied to a single acting ram. The additional valve means for load transfer comprises a valve 39 operable manually by a lever 65 and a second valve 49 having a draft responsive control rod 50. The valve 39, Fig. 4, normally permits pressure fluid to flow from the pump 12 through line 21 to the positioncontrol servo valve 24 but includes a plunger 40 which closes the line 21 on initial movement of the lever 65 to the position (shown) for selecting load transfer conditions. In this position the supply line 21 is coupled through lines 22a, 23a to the lift cylinder 14 but pressure build-up to operate the cylinder by unbalance is prevented due to the escape of fluid to a return line 43 through a central bore 44 over restriction slots 64. Further movement of the valve by the lever 65 against a spring 66 gradually closes the restriction between the slots 64 and a bore portion 62 to cause a build-up of pressure with consequent partial operation of the lift linkage. The rise in pressure is limited, to a value below that which causes lifting of the plough, by a calibrated orifice 70 which permits escape of pressure fluid to a central bore 68 and return line 69. The automatic load transfer control valve 49 is coupled to the return line 43 through a short-circuiting valve 67 and comprises restriction slots 58 cooperating with a bore 57. Movement of the rod 50 against an adjustable spring 53 results in build up of pressure to operate the lift cylinder which is again limited by the calibrated orifice 70.
Patent GB-542930-A (GB)
Title: Valve circuits with electronic discharge
IPC: H03F3/52
Filed: 1940-07-30
Abstract: 542,930. Valve amplifying circuits. STANDARD TELEPHONES & CABLES, Ltd. July 30, 1940, No. 12343. Convention date, Aug. 2, 1939. [Class 40 (v)] In an amplifier the exciting voltage is applied to the cathode from an impedance in the cathode lead of the preceding stage. Fig. 1 shows a high frequency amplifier in which the tuned circuit 4, 5 forms the coupling impedance and inductances 8, 9 neutralise the inherent capacities of the two stages. The arrangement is also applicable to wideband amplifiers by using resistance coupling. An inductance in series with the plate load resistance may be provided to maintain the response at high frequencies and an impedance may be arranged in series with the grid of the output stage to modify the response. Fig. 3 shows a push-pull audio amplifier operating in Class B using chokes 31, 32 for coupling. The valves may be double triodes in a common envelope.
Patent GB-330357-A (GB)
Title: Improvements in paper-web feeding and cutting devices, for duplicating machines
IPC: B65H35/06
Filed: 1929-04-22
Abstract: 330,357. Carter, M. J. D., and Roneo, Ltd. April 22, 1929. Tripping-arrangements.-The impression roller o of a rotary duplicating-machine is mounted in pivoted brackets h and is tripped out of contact with the printing-roller p bv a cam A on this roller acting on a lever s which presses on one of the brackets h. The lever s also actuates a pivoted cutting-device u co-operating with a fixed blade w.
Patent GB-377712-A (GB)
Title: Improvements in or relating to the production of artificial filaments, threads, ribbons, films and the like of cellulose esters and ethers
IPC: D01F2/30
Filed: 1931-04-28
Abstract: In the production of artificial filaments, threads, ribbons, films, and the like by dry spinning processes, the spinning solutions contain non-solvents or precipitants and the solutions are extruded into an evaporative medium charged with solvents or swelling agents, the proportions of non-solvent or precipitant being such that in the absence of the agent in the evaporative medium, a precipitated product would be obtained.  The film-forming substances are preferably organic cellulose derivatives such as cellulose acetate, nitrate, or other ester or mixed ester, or ethyl, methyl, or benzyl cellulose, or an ether-ester of cellulose.  The non-solvent in the case of cellulose acetate may be an aromatic hydrocarbon such as xylene, or toluene, or kerosene, ligroin, carbon tetrachloride, and alcohols.  The solvent may be acetone, or mixtures of ethylene and methylene chlorides with ethyl and methyl alcohols.  The solvent or swelling agent in the evaporative medium may be acetone, methyl ethyl ketone, dimethyl glycol, ethylene dichloride, acetic acid, formic acid, ethyl formate, methyl formate, methyl acetate, acetaldehyde, or formaldehyde.  If desired the non-solvent may subsequently be removed from the filaments under such conditions that hollow filaments are produced.  The filaments may be stretched continuously with their production either by means of p  positively driven rollers, or by the rapid flow of a gaseous medium, or by the drag of a countercurrent of air or other fluid. Pigments may be incorporated in the spinning solution to obtain dull lustre products.  The proportion of non-solvent in the spinning solution and the composition of the evaporative medium may be such as to produce products with a precipitated core and outer layer of continuous structure.  In an example cellulose acetate dissolved in acetone containing 22 per cent of xylene is spun in a dry cell through which is passed a current of acetone-laden air.  Specifications 300,998, 304,674, 322,557, 325,233, 326,232, 332,187, 332,231, 338,490, [all in Class 2 (ii), Cellulose &c.], 340,929, 340,930, 341,897, 346,678, 346,793, 366,110, and 375,425 are referred to.
Patent GB-801211-A (GB)
Title: Improvements relating to lead-acid type electric accumulators
Inventor: PRITCHETT CYRIL GEORGE FRANCIS
IPC: H01M4/76
Filed: 1956-04-25
Abstract: 801,211. Batteries. CHLORIDE BATTERIES, Ltd. April 2, 1957 [April 25, 1956], No. 12654/56. Class 53. The active material of a leadacid accumulator is held round lead spines c in microporous plastic tubes e each of which is surrounded by a closely fitting tube f of braided woven, or knitted fabric. The tubes e may be made of polyvinyl chloride, polyethylene or polystyrene, and the tubes f of glass yarn or a polyethylene or polyester yarn. The tubes f may be applied continuously to the inner tubes by passing the latter through a braiding machine and cutting the product into the required lengths. To prevent the cut ends from unravelling, a cement, for example, an epoxy resin, may be applied to the braid and allowed to set before cutting.
Patent GB-573188-A (GB)
Title: Improvements in clips for holding detonators in blasting cartridges
IPC: F42B3/26
Filed: 1943-08-06
Abstract: 573,188. Securing detonators to blasting cartridges. ROLFES, Ltd., and ROLFES, F. H. Aug. 6, 1943, No. 12746. [Class 9 (i)] A clip for holding a detonator. b in a blasting cartridge c comprises an attachment part 1, having an opening 3, a slot 2 and a hook 10, and a pronged hook 5. In use, the clip is hooked on to the fuze a and then pressed down, a projection 5a on the clip being thus embedded in the cartridge ; finally the hook 5 is bent down from the dotted-line position to the fullline position. The clip abuts' either against the end of the detonator or against a shoulder which may be formed on the detonator, e.g. by crimping the latter on to the fuze. In modifications : (1) there are two hooks 5 ; (2) there is no opening 3 and the slot 2 is a keyhole slot ; and (3) the clip may be of wire, as in Figs. 10 and 17.