baber/WOPTO huggingface dataset:
Patent GB-1537411-A (GB)
Title: Transducer head switching control apparatus for use in a video signal recording and/or playback apparatus
IPC: H04N5/93
Filed: 1977-02-11
Abstract: 1537411 Video head switching SONY CORP 11 Feb 1977 [18 Feb 1976] 05786/77 Heading G5R Switching between rotary video heads 12a, 12b during magnetic or optical recording or playback of video signals on or from a tape, sheet or card is controlled to occur in synchronism with one of the equalizing pulses in the vertical blanking interval of the composite video signal so that transient noises due to the switching are in synchronism with the equalizing pulses. Each track contains one field and each vertical blanking interval is recorded twice, once at the end of one track and once at the start of the next track, heads 12a, 12b engaging record 10 alternately with overlap so that each blanking interval is replayed simultaneously by both heads. An optical or magnetic detector 20, 22a, 22b produces first and second position pulses as heads 12a, 12b respectively start a track scan, these pulses passing via shaping amplifiers 24a, 24b to bistable flip-flop 28 which thus has one state as head 12a scans and its other state as head 12b scans. Adjustable delays 26a, 26b ensure that flip-flop 28 changes state during the first or second set of equalizing pulses in each blanking interval. A timing pulse-controlled D-type flip-flop 30 receives the output of flip-flop 28 and sync. signals separated 50 from the demodulated, 48 reproduced video signal, so that flip-flop 30 changes its state to correspond to that of flip-flop 28 only when a separated equalizing pulse is applied to flip-flop 30 so that the output thereof charges the state of switches 44a, 44b in sync. with an equalizing pulse to connect heads 12a, 12b one at a time to demodulator 48.
Patent GB-858591-A (GB)
Title: Silencing and cleaning device for the air-intake for internal-combustion engines
IPC: F02M35/14
Filed: 1958-02-21
Abstract: 858,591. Intake silencers. CESKE ZAVODY MOTOCYKLOVE, NAVODNI PODNIK. Feb. 21, 1958 [Feb. 21, 1957], No. 5796/58. Class 7(2). [Also in Group XXVIII] An air-intake, silencing and cleaning device comprises a casing 1 having an air inlet 9 and an air outlet 7 at the ends thereof and divided by a wall 4, provided with a central opening, into upstream and downstream portions, and a tubular filter 3 located within the upstream portion to form a chamber 5 between the filter and the casing. The chamber communicates with the air inlet 9, and a cavity 12 within the filter communicates with the downstream portion of the casing via the opening in the wall 4, the cavity together with the downstream portion forming the silencer. As shown, the cylindrical filter filled with filaments of polyvinyl-chloride is closed at the top thereof and is urged by a leaf spring 11 against a rubber ring 10, the tubular end of the filter being located in the aperture of the partition. The inlet 9 is tangential to the cover 2 which is secured by lever clamps. In a modification, there are two inlets disposed side-by-side and formed by a bent sheet-metal insert, and a rubber buffer is substituted for the leaf-spring 11.
Patent GB-539398-A (GB)
Title: Improvements in ultra high frequency antennae
IPC: H01Q21/26
Filed: 1940-04-01
Abstract: 539,398. Aerials. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. April 1, 1940, No. 5854. Convention date, March 31, 1939. [Class 40 (v)] An ultra high-frequency antenna comprises a metallic mast 5 and a number of dipole radiators 7, 9, 29, 31 disposed on opposite sides of and parallel to the mast. Diagonally opposed halves of the dipoles such as 11, 13 are directly connected to tubular extensions 17, 19 of the mast while the other halves 21, 23 are insulated from the mast and connected together by a lead passing through 17, 19. Insulators 10 support the free ends of the radiating sections which are one quarter wavelength and may produce a circular field pattern when adjacent sections are energized in phase quadrature. Tnis may be effected by a transmitter 25, through a conductor 27 which together with masts 5 comprise a concentric line. Conductor 27 is connected directly to sections 21, 23 and through a looped quarter wave extension 33 to a conductor 20 joining sections 7 and 9. A quarterwavelength shield 35 is inserted in mast 5 to assist in matching the impedance of the aerial to the transmission line. For producing a figure-ofeight radiation pattern the pairs of antennae are successively energized through two lines one of which is connected to the transmitter through a phase shifting device. By axially displacing the members of each crossed pair through one quarter-wavelength the necessity for the looped extension 33 is obviated.
Patent GB-984640-A (GB)
Title: Improvements in or relating to the control of the output voltage of a transformer
Inventor: MILLER CHARLES WALTER
IPC: H01F29/06
Filed: 1963-02-13
Abstract: 984,640. Transformer arrangements. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Jan. 31, 1964 [Feb. 13, 1963], No. 5882/63. Heading H2H. A transformer arrangement which permits a relatively fine variation in the voltage applied to a load connected to output terminals L comprises a main transformer T, the primary winding TP of which is centre-tapped at B, and a single winding auxiliary transformer VT having a sliding contact VTO, the winding of the auxiliary transformer being connected in parallel with one half of the primary winding TP of the main transformer, the remaining end terminal of the primary winding TP and the sliding contact VTO of the auxiliary contact being connected to the alternating current supply S. The main transformer may have the primary winding in two parts instead of being centre-tapped and alternatively may be an autotransformer.
Patent GB-1000346-A (GB)
Title: Improvements in the treatment of cotton linen and viscose rayon fabrics
Inventor: MILLER WILLIAM STUART
IPC: D06Q1/08
Filed: 1961-02-17
Abstract: 1 - Carboxymethyl - 3,5 - dimethylol - 2,6-dihydro-triazine-4-one is prepared by reacting formaldehyde with urea and glycine in the presence of sodium hydroxide, in aqueous solution.ALSO:Fabrics consisting at least in part of cotton, linen or viscose rayon are crease proofed by impregnating them with an aqueous solution containing a 1-substituted-3, 5-dimethylol-2, 6-dihydrotriazine-4-one having the formula N(R)-CH2-N(CH2OH)-CO-N(CH2OH)-CE in which R is an alkyl, alkylene, alkenyl, haloalkyl, haloalkenyl, hydroxyalkyl, carboxyalkyl, cycloaliphatic or arolkyl radical and an acid catalyst, partially drying them so that their moisture content is above 6% by weight for cotton and linen fabrics and above 10% by weight for viscose rayon fabrics holding them in a smooth crease free condition for a period of at least 2 hours at a temperature of 10 DEG -50 DEG C. during which reaction takes place while the fibres are still in a swollen state and then washing to remove surplus reactant and catalyst and drying.  When R is an alkylene radical it may be substituted with another triazone group to form a bis-triazone.  The catalyst may be an acid, e.g. hydrochloric acid, or acid composition capable of producing a pH value of 0.5-3.0 in the treating solution. After impregnation the fabric may be partially dried so that its residual moisture content is above 6% by weight for cotton and linen fabrics and above 10% by weight for viscose rayon fabrics, wound or a mandrel to form a roll, wrapped in a polythene sheet, held in the crease-free condition for at least 2 hours at 10 DEG -50 DEG C., heat treated for 1-5 minutes at 150 DEG -90 DEG C., washed first with dilute alkali and then dried.
Patent GB-815791-A (GB)
Title: Improvements in or relating to the production of crystals from solutions
Inventor: KOPEC LUDWIK
IPC: B01D9/00
Filed: 1956-02-25
Abstract: In a process for continuous crystallization in which a solution is circulated round a path including a storage zone, a zone in which supersaturation is produced, and a zone in which crystals are deposited, the heat content of the solution between leaving the crystallizing zone and leaving the storage zone is varied in such manner that the solution leaving the storage zone is in a stable condition free from supersaturation.  Supersaturated solution enters a crystallizer vessel 1 (Fig. 1) by a pipe 2 and passes up the vessel through forming and growing crystals.  Large crystals sink to the bottom and crystal slurry is removed by a pipe 4 to a <PICT:0815791/III/1> centrifuge 7, where crystal product leaves by a line 34 and mother liquor by a line 11.  Mother liquor passes from an overflow 3 by a line 10 to a collecting vessel 33, into which mother liquor from line 11 flows; feed consisting of a concentrated solution is passed into vessel 33 by a line 5.  A pump 16 sucks solution from vessel 33 by a line 12, into which flows mother liquor collected by a device 6 from the top of the crystallizer 1 and controlled by a valve 14, the pump 16 passing the solution through a heat exchanger 18 to a storage tank 20 by a line 19.  The tank 20 contains coils 22a and 22b which heat the solution if the solute is of normal solubility and cool it if the solute is of inverted solubility, so that an unsaturated solution leaves the tank 20 by a line 21 and passes through heat-exchanger 18 and by a line 28 to a supersaturator 29.  A valve 27 in a by-pass 26 is regulated so that solution before entering supersaturator 29 is free from supersaturation.  The solution is cooled, if the solute is of normal solubility, and heated if the solute is of inverted solubility, in supersaturator 29, to obtain a supersaturated solution which is passed by a line 30 to pipe 2.  In a modification the solution is further supersaturated after leaving the cooler 29 and before entering pipe 2, by evaporating some of the solvent (water) in an evaporating vessel maintained under vacuum.  The vapour is passed to a condenser where it comes into direct contact with a jet of cooling water, and the effluent from the condenser is used as cooling medium in the cooler 29.  In this modification the feed liquor is introduced into the top of the crystallizer 1.
Patent GB-669341-A (GB)
Title: Soot-extracting device for steam boilers
IPC: F28G13/00
Filed: 1949-03-04
Abstract: 669,341. Cleaning boiler flues. WALLACE,. R. K. March 6, 1950 [March 4, 1949], No. 5952/49. Class 51 (i). [Also in Group XXVIII] In a soot extractor for steam boilers a collecting pipe 4 fixed below the grate of a Scotch boiler terminates in a section formed with an open slot 8 and disposed at the foot of the combustion chamber, and is in removable connection by a plug-and-socket joint 7 with a pipe 2 connected to a soot receiver 3 exhausted by a steam ejector 1, the receiver being either attached to the furnace or mounted in a wheeled carriage. The receiver 3 incorporates a cyclone soot separator 15 of known type and above the separator 15 an air filter 16 located within a casing formed with inlet ports 17 open to the exterior of the receiver 3 and with outlet ports open to the chamber 18 in communication with the ejector 1. The pipe 4 may form a stay at the point where it passes through the boiler shell and the slotted end 8 may be disposed in the furnace ashpit. A plurality of pipes 4 may be fitted to a single boiler.
Patent GB-659789-A (GB)
Title: Improvements in or relating to the method of maintaining chemical characteristics ofliquids and an electrical cell apparatus therefor
IPC: G01N27/49
Filed: 1949-03-04
Abstract: 659,789. Determining physical qualities of materials. WALLACE & TIERNAN PRO. DUCTS, Inc. March 4, 1949, No. 5976. Convention date, March 5, 1948. [Class 37] Minute quantities of oxidizing or reducing substances in a stream of liquid are detected by feeding in excess of a reagent so that these substances are replaced by an equivalent concentration of reagent, entraining abrasive particles in the stream, directing the stream against an elongated electrode, and detecting electrical effects produced between the liquid and the electrode in accordance with the available content of reagent. Two vertical cylindrical chambers 11, 12 are formed in an insulating body 10. The lower end of the chamber 12 tapers to a cavity 14, from which a conduit 15 extends to the chamber 11. The conduit 15 forms a Venturi device so that liquid entering the cavity 14 is accelerated and projected as a jet into the chamber 11. Liquid to be tested is supplied through a conduit 22 to a jet tube 24 which, together with the Venturi 15, forms an injection pump. The lower end of the chamber 11 tapers to an outlet 25 from which a conduit 26 extends to the lower end of a copper tube 27 forming part of an electrical cell. The upper end of the tube 27 leads into a cavity 30 in an insulating block 28, this cavity being directly connected with the cavity 14. The cell tube 27 is lined with a coil of copper wire 34 to increase the surface area. The other cell electrode comprises a platinum ribbon 40 kept taut by a spring 42. A quantity of abrasive material such as fine aluminium oxide or alundum is inserted into the cavity 14 and is carried round with the stream of liquid through the Venturi 15 and conduit 26, through the electrode coil 34, and back to the cavity 14, cleaning the electrodes 34, 40 during its passage. Excess liquid flows upwards through the chamber 12 to the overflow pipe 48, the grit particles falling back into the cavity 14 to be again entrained by further liquid entering the jet tube. A vertical tube 51 provides a static head of liquid in the chamber 11. A solution of potassium iodide together with acetate buffer solution is injected through a silver tube 60 and diffuses into the water in the chamber 11 through a number of small apertures and a felt sleeve. When it is desired to determine separately the free chlorine and chloramine content a solution of sodium nitrite is fed into the sample water through an injector tube 69. Pulsations are smoothed out by an equalization chamber 70 with two parallel pipes 72, 73, the first of which is closed at its lower end and has a number of small openings spaced along' it. The nitrite combines with free chlorine but not with chloramines, so that the latter alone remain to react with the iodide solution. The free chlorine may be determined by subtraction from a test without nitrite. The E.M.F. developed between the electrodes 34, 40 is measured by a potentiometer.
Patent GB-395077-A (GB)
Title: Improvements in or relating to rail-ring or annular vehicle wheels
IPC: B60B17/00
Filed: 1932-02-29
Abstract: 395,077. Endless-tracks for vehicles. RUSHTON, T. H., 3, Overend Road, Worksop, Nottinghamshire. Feb. 29, 1932, No. 5985. [Class 79 (i).] Wheels Confixed or rotating axles B of a vehicle frame A run inside larger loose track wheels D. The wheel D may be suitably supported inside or out bv rollers on the frame A. Reference has been directed by the Comptroller to Specifications 7179/93, [Class, 144, Wheels &c.], 22984/95, [Class 12, Bearings &c.], and 113,033, [Class 144 (i), Wheels for vehicles].
Patent GB-960418-A (GB)
Title: Improvements relating to egg breaking machines
IPC: A47J43/14
Filed: 1960-02-19
Abstract: 960,418. Egg breaking machines. L. E. SCHUSTEROVITZ. Jan. 24, 1961 [Feb. 19, 1960], No. 5997/60. Heading A4R. Eggs are supported upright in a conveyer 1 with their lower ends protruding beneath the conveyer to be cut so that the contents are deposited in troughs 16 carried in pairs on a conveyer 14 each trough being rockable about an axis longitudinal of the conveyer under the control of cam means so that it may discharge its contents, a slotted partition 17 in the trough, separating the yolk from the albumen. As shown, the eggs are supported in carriers 7 having apertures 8 and mounted on cross-bars 5 extending between spaced endless chains 3 to form conveyer 1. Chains 3 are carried on sprockets and are driven through variable speed gearing from motor 12. A shell cutter unit reciprocable along conveyer 1 includes a plurality of horizontal rotatable knives 9 which cut the eggs beneath carriers 7. Conveyer 14, moves transversely of conveyer 1 and comprises endless chains 15 which carry the troughs 16 whose cam follower rollers 19 engage tracks 20 arranged so as to tip the troughs to discharge the albumen and yolks into separate containers. Conveyer 14, which is driven from the variable speed gearing through a detachable coupling, is carried by a frame 21 supported on wheels 22 running on tracks 23 so as to be displaceable as a unit. The egg shells are collected in trough.
Patent GB-162858-A (GB)
Title: Electric switches
IPC: H01H15/02
Filed: 1920-02-28
Abstract: 162,858. Damey, R. K., and Damey, C. A. Feb. 28, 1920. Switches, quick - break, are made with an insulating-base 1 having blocks 23 with inclined faces 4, 5, at the nearer ends of which are secured contacts 13, 14 having parallel faces. The movable contact member comprises a bridge-piece 8 with hinged wings 9, 10 mounted, preferably with lost motion, on a push-rod 7. Springs 12, to bring the hinged wings in alignment with the bridge-piece, or leaf springs, may be employed. When the switch is released from the closed position as shown in Fig. 2, the interaction between the spring-pressed wings and the inclined faces 4, 5 produces a quick-break action. The switch may be modified for operation by a pivoted tumbler lever, the bridge in this case moving in a circular path.
Patent GB-602334-A (GB)
Title: Improvements in or relating to the manufacture of 2:7-disubstituted acridones and reduction products thereof
Filed: 1945-03-12
Abstract: 2 : 7-Disubstituted acridones in which the substituents each contain a nitrogen atom directly linked to a nuclear carbon atom, e.g. 2 : 7-diaminoacridone of the formula <FORM:0602334/IV(b)/1> are prepared by heating a 31 : 4-disubstituted diphenylamine-2-carboxylic acid of the general formula <FORM:0602334/IV(b)/2> wherein R1 represents an amino group, a mono- or dialkylamino group, an acylamido or a nitro group and R2 represents an amino group, a mono- or dialkylamino group or an acylamido group with sulphuric acid.  Preferably concentrated sulphuric acid of at least 98 per cent concentration is used and, if desired, phosphoric and/or anhydrous boric acid may be present. When R1 and/or R2 represents an acylamino group or groups, the cyclisation of the diphenylamine-2-carboxylic acid is usually accompanied by simultaneous deacylation.  When R1 represents a nitro group, the resulting 2 : 7-substituted-acridone may be reduced by standard methods to yield 2 : 7-diaminoacridone, e.g. by the action of tin and hydrochloric acid or stannous chloride and hydrochloric acid and decomposing the stannichloride formed with aqueous alkali.  The resulting 2 : 7-diaminoacridone may be reduced with an alkali metal amalgam in neutral or alkaline solution, e.g. sodium amalgam may be used, to yield 2 : 7-diaminoacridone which may be oxidized with oxygen in the presence of a ferric salt, e.g. ferric chloride, to yield 2 : 7-diaminoacridine.  In examples: (1) 2 : 7-diaminoacridone is prepared by heating 31-amino-4-acetylamino-diphenylamine-2-carboxylic acid with concentrated sulphuric acid; (2) 2-amino-7-nitroacridone is similarly prepared from 31-amino-4-nitrodiphenylamine-2-carboxylic acid and is reduced to 2 : 7-diaminoacridone with stannous chloride and hydrochloric acid; (3) 2-amino-7-nitroacridone is prepared as in (1) from 31-acetamido-4-nitro-diphenylamine-2-carboxylic acid.  31-Amino- and 31-acetamido-4-nitro-diphenylamine-2-carboxylic acids are obtained by condensing 2-chloro-5-nitrobenzoic acid with metaphenylene diamine and if necessary acylating with acetic anhydride.  31 - Amino - 4 - acetylamino - diphenylamine - 2 - carboxylic acid is prepared by condensing metaphenylene diamine with 5-acetylamino-2-chlorobenzoic acid which may be prepared by reducing 5-nitro-2-chlorobenzoic acid and acylating. Specification 602,331 is referred to.
Patent GB-1068023-A (GB)
Title: Solutions of copolymers of ethylenically unsaturated n-substituted amides
Inventor: REEDER FRANK
IPC: C08F20/58
Filed: 1963-02-15
Abstract: Solutions of water-insoluble copolymers are prepared by polymerizing in an aqueous solution containing at least 10% by weight of a water-soluble halide or thiocyanate salt of a metal of Group I or II of the Periodic Table, in the presence of a water-soluble, free-radical initiator and at a pH greater than 4 and a temperature below 100 DEG C., a substituted amide of the formula <FORM:1068023/C3/1> wherein R is hydrogen, alkyl, carboxymethyl or carbamoylmethyl, R1 is hydrogen, methyl or hydroxyethyl and R11 is hydrogen or methyl, and at least one other ethylenically unsaturated compound, in such proportions that the copolymer formed contains from 35 to 50 mole per cent of units of the substituted amide.  The preferred substituted amides are those derived from acrylamide, methacrylamide and the mono- and diamides of itaconic acid.  Suitable comonomers include acrylic and methacrylic acid nitriles and esters, particularly esters with alcohols having up to 4 carbon atoms (e.g. ethyl acrylate and methyl methacrylate), styrene and vinyl esters. Initiators specified are azo-bis-g -cyanovaleric acid and the sodium salt thereof, and sodium and ammonium persulphate. Aqueous calcium chloride solutions are the preferred polymerization media, and copolymer solutions prepared therein may be coagulated by contacting with sodium silicate. Examples illustrate the preparation of solutions of acrylonitrile/N - methylolacrylamide and acrylonitrile/N - methoxymethyl - acrylamide copolymers.  The copolymer solutions can be formed into filaments or films, which may be rendered less soluble by heating in the presence of an acidic catalyst.
Patent GB-410935-A (GB)
Title: Improvements in hydrometers, particularly for indicating the state of charge of electric accumulators
IPC: G01N9/16
Filed: 1933-03-02
Abstract: 410,935. Batteries. ALSTON, F. H., 1141, Coventry Road, South Yardley, Birming- ham. March 2, 1933, No. 6329. Drawings to Specification. [Class 53.] For indicating the density of accumulator acid, a single solid piece of material consisting of an arm or pointer with an integral boss or enlarged portion is mounted for angular movement on a celluloid panel and has attached thereto at a point eccentric to the fulcrum or pivot a separate controlling weight adapted to maintain the pointer in equilibrium in different angular positions according to the density of the liquid. The panel, which may be graduated, is placed over a transparent cell between the wall and plates of the accumulator.
Patent GB-678139-A (GB)
Title: Improvements relating to the manufacture of cam shafts
IPC: B21K1/08
Filed: 1951-03-16
Abstract: 678,139. Making cams. DECKEL, H., and DECKEL, F. W. March 16, 1951 [May 31, 1950], No. 6388/51. Classes 83 (ii) and 83 (iv). Drawing.-A method of finishing cams on a camshaft is characterized in that the shaping of each cam is effected by drawing through one or more dies. A shaft 10, whilst in the soft state, is formed with two cams 12 and 14 identical in shape and displaced through 180 degrees. The cams are finished by passing them through an aperture 20 of a die 18 mounted in a holder 16 in a hydraulic press (not shown). As soon as the cam 12 has passed through the die the feed is interrupted and the shaft 10 turned through 180 degrees. The feed is then resumed and the cam 14 finished in like manner. A number of dies with graduated apertures may be used, the last die determining the final form of the cam. Alternatively, the final form can be given by the first die, the following dies serving as guides for the work. The cam-shaft may be held stationary and the die or dies moved over the cam.