baber/WOPTO huggingface dataset:
Patent GB-462659-A (GB)
Title: Improvements in the manufacture and production of vat dyestuffs of the dibenzanthrone series
IPC: C09B3/36
Filed: 1935-08-06
Abstract: Vat-dyes are prepared by treating Bz-trioxy-or Bz - tetrahydroxydibenzanthrones with alkylating or aralkylating agents. Suitable starting materials are obtainable according to Specifications 461,885 and 462,658.  Suitable alkylating or aralkylating agents are monohalogen or polyhalogen alkyls or aralkyls, alkyl or aralkyl esters of sulphuric acid or of sulphonic acids such as p-toluenesulphonic acid and formaldehyde; alkylation or aralkylation may be carried out in stages, mixed ethers being obtained if desired.  In examples: (1) Bz2.Bz2<1>.Bz3-trioxydibenzanthrone (prepared by heating the Bz2.Bz2<1>-quinone with 90 per cent sulphuric acid in trichlorbenzene) is treated with p-toluenesulphonic acid methyl ester or ethyl ester, or monomethylglycol ester, or mono-n-butylglycol ester, or chlorethyl ester, or with benzotrichloride, or with paraformaldehyde (or formaldehyde); in this latter case the product may be further treated with a methylating agent such as p-toleuenesulphonic acid methyl ester: (2) Bz2.Bz2<1>.Bz3.Bz3<1>-tetrahydroxydibenzanthrone (prepared by nitrating dibenzanthrone-Bz2.Bz2<1>-quinone, reducing the dinitro compound, oxidizing with ferric sulphate, treating the product with 80 per cent sulphuric acid, and reducing with sodium bisulphite) is treated with p-toluenesulphonic acid methyl ester and chlorethyl ester; (3) dibromo-Bz2.Bz2<1>.Bz3.Bz3<1>-tetrahydroxydibenzanthrone (obtainable according to example 4 of Specification 461,885) is treated with p-toluenesulphonic acid methyl ester; (4) the product obtained by treating brominated dimethoxydibenzanthrone (cf. example 1 of Specification 205,304, [Class 2 (iii)]), with sulphuric acid monohydrate in presence of ammonium vanadate, followed by reduction with sodium bisulphite is treated wit p-toluenesulphonic acid methyl ester.  The products dye blue-green to violet dyeings.  Reference has been directed by the Comptroller to Specification 276,768, [Class 2 (iii)].
Patent GB-1119198-A (GB)
Title: A device for transferring dosed samples of liquid
Inventor: HRDINA JIRI
IPC: G01N30/24
Filed: 1966-05-19
Abstract: 1,119,198. Dosing device. CESKOSLOVENSKA AKADEMIE VED. 19 May., 1966 [19 May, 1965], No. 22349/66. Heading B1X. A device for transferring dosed samples of liquids comprises at least one sample tube 1 connected at one of its ends to a tube 3 leading to a distributor 60 adapted to connect the sample tube to a suction source 66 so that it may draw a sample from a reservoir 28 and, through pump 58, to a source of liquid (eluent) for transferring the sample to a processing apparatus, for example an ion-exchange column 57 for amino acid analysis. The sample tube 1 is connected to a member 5 which is pivotally mounted in a lever 11, the tube 3 being sealingly coupled to the member. The lever is pivoted on a support 13 and is loaded by an adjustable spring 20. The lower end 2 of the sample tube is normally pressed by the spring into sealing engagement with a resilient bush (30, Fig. 5) the interior of the sample tube then communicates via a hollow needle (32) connected with a tube (33) leading to the processing apparatus via a further distributor 62. In order for the sample tube to draw in a sample, the lever is raised against the action of the spring 20 by means of a handle 15 so that the end 2 of tube 1 comes out of contact with the bush and, by means of a leaf spring 26, the sample tube is moved outwardly into the reservoir 28. In a modification, in order to obtain a larger volume of the sample, the tube 1 is formed into a coil and secured to a fixed support plate 14 (Fig. 6, not shown).
Patent GB-1506634-A (GB)
Title: Strating facilities in internal combustion engine carburettors
IPC: F02M1/10
Filed: 1975-05-22
Abstract: 1506634 Automatic choke carburetters SOC INDUSTRIELLE DE BREVETS ET D'ETUDES 22 May 1975 [27 May 1974] 22357/75 Heading F1H To control the opening speed of an eccentrically mounted choke valve 7, biased against opening by an engine temperature sensitive bi-metallic spring 9 and opened by a vacuum motor 28 upon starting an engine, there is provided, between the vacuum motor 28 and an induction pipe 1, a vacuum transmitting duct 11 having a throttling restriction 38 and opening into the induction pipe 1 at a first position 37, which is always downstream of a throttle valve 2, and also at at least one other position 41a, 42a, which may or may not be upstream of the throttle valve minimum opening position depending upon the ambient temperature. The minimum opening position of the throttle valve is limited by a fast-idle cam 19 rotated by a bi-metallic strip 20. At low ambient temperatures e.g. -20‹C all the ducts 37, 41, 42 open into the induction pipe 1 below the throttle valve 2, so that a high degree of vacuum is transmitted to the motor 28 enabling the choke valve 7 to open at a speed limited by throttling restriction 38 against the bias of an engine temperature dependent spring force from the bi-metallic spring 9. At higher engine temperatures e.g. +20‹C this biasing force is smaller and thus without modulating the vacuum applied to motor 28, the choke valve 7 would open too quickly. Consequently at higher temperatures the fast-idle cam 19 limits the throttle valve minimum opening so that at least some of the ducts 41, 42 open into the induction pipe 1 upstream of the throttle valve 3 to reduce the magnitude of the vacuum acting on the motor 28. The separate ducts 41, 42 may be replaced by a single vertical slot (not shown), communicating with the vacuum transmitting duct 11 near the slot base.
Patent GB-428682-A (GB)
Title: Improved appliance for practising or teaching the game of golf
IPC: A63B71/02
Filed: 1933-08-11
Abstract: 428,682. Golf practising appliances. BRERETON, F. S., Heath Barn, Hemel Hempstead, Hertfordshire. Aug. 11, 1933, No. 22446. [Class 132 (ii)] A golf-practising appliance of the kind comprising an inextensible cord having a ball secured to one end thereof and attached at its opposite end to one end of a resilient cord or spring is characterized in that the attached ends of the said cords are also attached to one end of a second inextensible cord, means being provided for securing to the ground the opposite ends of the second inextensible cord and the resilient cord or spring. The appliance comprises a wooden hinged batten or stand 1 having secured to a hook 2 at one end an indiarubber cord 3 of rectangular or circular crosssection or a spring connected to an inextensible cord 7 adjustably secured to the eye 8 at the other end of the stand 1. An inextensible cord 10 secured to the ball 11 is attached to the cord 3 by an extensible or inextensible ring 9 and its effective length is adjusted by the cleat 12. A slider 13 is adjustably secured to the cord 3 and slides along the rail 14 to actuate the indicator 15 also slidable on the rail 14. The indicator remains in the position to which it has been moved by the slider 13 until reset. In a modification, the cord 3 may have attached to it a cord or chain wound around a pulley or spindle on which a spring or weight controlled hand or pointer is fixed for effecting movement of an indicator. The cord 3 may operate a pneumatic system for actuating the indicator at a distance. The cords 3 and 7 may have short inserts of inextensible and extensible material respectively. The batten 1 may be secured to the ground at its ends by U-shaped pins, or the ends of the batten may be provided with metal fittings 16, Fig. 4, having a leg 17 hinged thereto to fold within a recess in the fitting, or an eye plate can be rotatably secured to the batten and can have an aperture to receive a pin, or a hole 18 can be formed in the fitting 16 and batten 1 to take a pin or screw, or the ends of the batten may be furnished with suction cups for adhesion to a floor. The batten 1 can be made in two or more parts connected by a hinge or hinges 19, Fig. 2, and recesses 20 can be formed to form a ball pocket when the batten is folded. Cleats 21 may be provided around which the cord 7 can be wound. The Provisional Specification describes some modified constructions.
Patent GB-269051-A (GB)
Title: Improvements relating to draw-out trucks for electric switchboards
IPC: H02B11/24
Filed: 1926-09-11
Abstract: 269,051. Johnson & Phillips, Ltd., and Wood, P. M. Sept. 11, 1926. Sliding switch-carriage arrangements.-In truck-type switch gear a weighted shutter is moved against its bias to cover the openings in the switch cubicle when the truck is with. drawn, a profiled bar acting as a key being adapted to unlatch the normally locked shutter during the inward movement of the truck, so permitting it to move in order that the switch terminals may engage the stationary sockets. The pivoted shutter 2 (Fig. 1) which may be similar to that described in Specification 177,044, has a number of apertures 3 which are adapted to be moved into register with corresponding apertures in the fixed partition 1. This motion is produced by a radial weighted bar 5 attached to the shutter which is normallv latched in its raised position by a pivoted weighted catch 10. On inward movement of the truck member the catch 10 is moved aside by a lateral inclined portion 13 (Fig. 3) on the member 6 carried by the truck and the, bar 5 is allowed to fall to its dotted position in Fig. 1 during its engagement with a profiled portion 7 of the member 6 (Fig. 2), so permitting the switch terminals to engage the stationary sockets. On withdrawal of the bar 6 the shutter 1 is raised and automatically latched and to prevent unauthorised tampering with the latching member the point of entry of the bar 6 is provided with a guard or cowl 14.
Patent GB-962267-A (GB)
Title: Tone keyer
Inventor: KISS AGOSTON ZOLTAN
IPC: H03K17/60
Filed: 1961-06-22
Abstract: 962,267. Transistor gating circuits; keying oscillations. VECTRON ELECTRO-PHYSICS Ltd. June 21, 1962 [June 22, 1961], No. 22697/61. Headings H3R and H3T. A circuit for keying the output from a signal source having both an alternating current and direct current component comprises a transistor which may be rendered selectively conducting or non-conducting by potentials applied to its base electrode, one of the further electrodes of the transistor being directly connected to an output terminal of the source and the third electrode of the transistor being coupled to the other output terminal through biasing means having a low impedance to alternating-current signals and serving to maintain the directcurrent level at the first output terminal substantially independent of whether or not the transistor is conducting. A loud-speaker pre-amplifier transistor T1 is coupled via a transformer TR to a power amplifier, not shown. The output from transistor T1 may be keyed by setting switch S successively in positions 1 and 2 to render transistor T2 respectively conductive and non-conductive, the bias voltage applied to the emitter of transistor T2 by potential divider network R1, R2, C3 being substantially the same as the D.C. level existing at the collector of transistor T1 so that keying may be performed without objectionable rapid changes in D.C. level in the output. Capacitor C3 is of large value so that a low impedance to earth is presented for alternating-current signals when transistor T2 is conductive.
Patent GB-1511439-A (GB)
Title: Sheet material decurling apparatus
IPC: B65H29/24
Filed: 1976-06-02
Abstract: 1511439 Uncurling sheets BALDWINGEGENHEIMER CORP 2 June 1976 [7 July 1975] 22705/76 Heading B8R Sheets which may have been curled on delivery from a printing-machine or for other causes are conveyed, e.g. by grippers along the lower run of a chain conveyer, over a decurling apparatus comprising two elongate members 34, 36, Figs. 2 and 4, having upper convex sheet-supporting surfaces, joined by an elongate fillet 38 having an upwardly directed concave surface. The numbers 34, 36, 38 may be formed from a single piece of stainless steel and the members 34, 36 are closed by a plate 40 to form manifolds from which air is withdrawn through conduits 56, a hole 50 in the plate 40 and a hose 54 by a vacuum pump, so that a sheet, which is travelling at right-angles to the length of the members 34, 36, 38, is drawn down on to the fillet 38 to produce a reverse bend therein. The dimensions of the parts of the apparatus and the degree of vacuum are selected according to the properties and the degree of curling of the sheets. Air may be blown through the hose 54 to remove dust particles or when decurling is unnecessary.
Patent GB-224039-A (GB)
Title: An improved air valve
IPC: F16K15/20
Filed: 1923-09-11
Abstract: 224,039. Saul, S. Sept. 11, 1923. Tyre and like valves.-A tube b, which may be of rubber, is secured to the wall a of a football bladder, air cushion, pneumatic tyre or the like, and is closed at its inner end by a thinner portion c which is perforated at d. The side walls of the part c are pressed against the wall of the tube b by internal pressure to close the openings d, and when air pressure is externally applied, the part c is defected into the position shown dotted and the openings d are freed. The valve may carry a screwed metal tube f when employed on a pneumatic tyre.
Patent GB-501027-A (GB)
Title: Improvements in and relating to relieving stresses in welds
IPC: C21D9/50
Filed: 1937-08-20
Abstract: 501,027. Heat - treatment. SADLER, A. T. (Detroit Electric Furnace Co.) Aug. 20, 1937, No. 22829. Drawings to Specification. [Class 72] [Also in Group XI] A heating current is magnetically induced in a welded joint to cause heating to a predetermined temperature and the heating current is then gradually reduced to control the cooling. In a pipe joint the predetermined temperature is 1200‹F., and this is thermostatically maintained for a time of one hour per inch of thickness of the pipe. The current is induced by a coil fed from a transformer with a tapped secondary enabling step-bystep reduction during cooling.
Patent GB-680317-A (GB)
Title: Improvements in sealing devices for rotary regenerative heat exchangers
IPC: F28D19/04
Filed: 1950-09-18
Abstract: 680,317. Rotary regenerative heat-exchangers. AKTIEBOLAGET LJUNGSTROMS ANGTURBIN. Sept. 18, 1950 [Oct. 15, 1949], No. 22845/50. Class 64 (i) A rotary drum type regenerator includes a seal between relatively moving parts thereof, comprising a ring providing a smooth sealing surface and mounted on one part and a plurality of arcuate sealing shoes mounted on the other part and urged into sealing contact with the sealing surface of the ring by spring means. In the form shown a sealing ring 30 which may be segmental, is bolted to the rotor shell 10 and may be adjusted axially of the rotor, towards or away from the adjacent end plate 21 of the stationary casing. A ring of stationary sealing shoes 33 abuts the ring 30 in sealing contact and the legs 35, 36 of the shoes are received in correspondingly shaped recesses in thrust blocks 37 mounted on the end plate 21 in circumferentially spaced relation around the rotor shell. The thrust blocks are movable radially on the rotor by the provision of guide slots 38 and are urged inwardly towards the rotor shell by means of tension springs 42, Fig. 3, which interconnect contiguous blocks.
Patent GB-892849-A (GB)
Title: Means for feeding materials of small particle size
IPC: B65G33/00
Filed: 1958-07-16
Abstract: 892,849. Screw conveyers. RUHRCHEMIE A.G. July 16, 1958 [Aug. 1, 1957], No. 22887/58. Class 78 (1). Rotation of sticky material with a screw conveyer is prevented by providing the screw 2 with a series of gaps 3 which are in alignment in the axial direction and through which pass scraper blades 5, 6 mounted on a reciprocating bar 4. Several gaps may be provided in each convolution of the screw. The scraper may be reciprocated a corresponding number of times in each rotation of the screw, and may have an oscillatory movement about its axis. Movement of the scraper takes place in timed relationship with the rotation of the screw, and may be caused by the thrust of the flights, in which case the return movement is effected by a spring.
Patent GB-501059-A (GB)
Title: Improvements in and relating to lingerie clips and the like
IPC: A41F15/02
Filed: 1937-08-21
Abstract: 501,059. Lingerie clips. LAKE, H. W. Aug. 21, 1937, No. 22963. [Class 44] [Also in Group VII] A lingerie clip of the type formed from a metal strip doubled on itself to constitute a spring hinge 7 and wherein the releasable fastening of the clip is effected by forcing, the end 10 of one arm past the substantially circular loop 9 of the other arm, is provided with one or more pressed-up projections 13, on either arm, to increase the gripping effect, the arm 6 being narrower than the arm 5. Apertures 12 are provided for sewing the clip to a garment. The end of the arm 6 may bo doubled and the arms may be bowed in opposite directions.
Patent GB-188823-A (GB)
Title: Improvements in holders for thermionic valves
IPC: H01R33/975
Filed: 1921-08-30
Abstract: 188,823. General Electric Co., Ltd., and Eden, C. G. Aug. 30, 1921. Vacuum tubes.-A holder for thermionic valves has a single spring contact adapted to press three or more contacts on a valve against corresponding contacts on the holder, and the spring. is so arranged that the components of pressure exerted on the contacts are not all in the same straight line or all parallel. As shown, a spring contact 15 engages with a contact 34, and exerts pressure along the axis of the valve, and at rightangles thereto, an end contact 35 and two-side contacts 32 being held thereby in engagement with contacts 22, 17 respectively, on the holder. The contacts 15, 22 are mounted on the upturned ends 12, 13 of a base 11 by insulated bolts 14 and studs 23. Extensions (not shown) are provided on the contacts of the holder for making. external connection.
Patent GB-892730-A (GB)
Title: Method of producing u-shaped link parts
IPC: B21L1/00
Filed: 1960-07-01
Abstract: 892,730. Making U-shaped links. ALLMANNA SVENSKA ELEKTRISKA A.B. July 1, 1960 [July 3, 1959], No. 23040/60. Class 83 (4). Rod is bent over a mandrel to form a U- shaped link by means which then force the mandrel to move a cutting tool to sever a length from a rod of material for a new workpiece. Pillars 4 are moved downwards together with a part 1 carrying a die 5 with a pair of bending members 6 turnable in the die 5. A carrier member 2 is also lowered through rod and spring means 8, 9 connected to the part 1 until it is supported on fixed members 22 to expose a mandrel 12 on a carrier 3. Thereupon a length of rod 16 is bent over the mandrel 12 by the members 6 as they move down and turn in the die 5. On completion of the bending continued downward movement of the die 5 presses, through the now bent rod, on the mandrel 12 to lower its carrier 3. This causes lateral movement of a slide 15 carrying a cutter 14 to sever a length from a rod of material for a new workpiece. The ends of the bent U- shaped link are by this time pressed hard against members 7 on the carrier 2. The U- shaped link is ejected from the die 5 by a pin 19 on upward movement of the part 1.
Patent GB-779803-A (GB)
Title: Process for dyeing polyester fibres
Filed: 1955-08-10
Abstract: Linear aromatic polyester fibres are dyed with a hydroxy-anthraquinone, e.g. 1 - hydroxy-, 1:2-, 1:4-, 1:5-, 1:8-, dihydroxy- and 1:2:4 - and 1:4:5 trihydroxy-anthraquinone.  Dyeing is effected with an aqueous suspension of the dyestuff at elevated temperatures.  Carriers, e.g. benzoic acid, may be added to the dyebath.
Patent GB-872256-A (GB)
Title: Improvements in methods for treating fuel gases
Inventor: LANDAU MANFRED
IPC: C10K3/04
Filed: 1958-08-18
Abstract: A fuel gas containing organic and inorganic sulphur compounds and carbon monoxide is passed with steam at a temperature between 200 DEG and 800 DEG C., preferably between 350 DEG  and 500 DEG C., through one of two similar reactors alternately in use and being regenerated and each containing one or more beds of an iron oxide catalyst whereby the conversion with steam of at least some of the carbon monoxide to carbon dioxide and hydrogen and the removal of the sulphur compounds are simultaneously achieved, the catalyst in the reactor not in use being regenerated by blowing with steam or flue gas and air to remove any sulphur compounds therefrom.  The iron oxide catalyst may be used in fluidised or other continuously moving beds.  The conversion of carbon monoxide and removal of sulphur compounds may be effected in a number of stages, steam for carbon monoxide conversion being added in all to convert all the carbon monoxide and the resultant gas may be used for ammonia synthesis. Alternatively a gas containing some carbon monoxide may be further treated in a methanisation reactor, e.g. containing a nickel catalyst, to remove part of the carbon monoxide.  In regenerating the used catalyst the amount of air in the regenerating gas may be adjusted to obtain the removed sulphur either as elemental sulphur or sulphur dioxide.
Patent GB-735426-A (GB)
Title: Improvements in or relating to the pickling of ferrous metals
IPC: C23G1/36
Filed: 1951-10-04
Abstract: Ferrous metals are pickled in a solution containing ammonium bisulphate, preferably 100-450 grams per litre, and preferably at a temperature between 70 DEG  C. and the boiling point of the solution. The spent pickling liquor may be treated to remove iron and recover ammonium bisulphate by (a) treatment with ammonia under oxidizing conditions and filtering, evaporating to yield ammonium sulphate and heating, e.g. at 370 DEG  C., to liberate ammonia and form bisulphate; or (b) cooling the liquor to e.g. 10 DEG  C., to precipitate ferrous ammonium sulphate, if necessary after adding ammonium sulphate, the ferrous ammonium sulphate being separated, redissolved and treated as in (a).  The pickling liquor may be continuously regenerated by withdrawing portions thereof for treatment as in (b) and returning the mother liquor, freed from ferrous ammonium sulphate, to the bath with additions of water and ammonium bisulphate sufficient to compensate for losses. Specification 572,336, [Group II], is referred to.ALSO:Ferrous metals are pickled in a solution containing ammonium bisulphate, preferably 100-450 gms. per litre and preferably at a temperature between 70 DEG C. and the boiling point of the solution. The spent pickling liquor may be treated to remove iron and recover ammonium bisulphate by (a) treatment with ammonia under oxidizing conditions and filtering, evaporating to yield ammonium sulphate and heating, e.g. at 370 DEG C., to liberate ammonia and form bisulphate; or (b) cooling liquor to e.g. 10 DEG  C., to precipitate ferrous ammonium sulphate, if necessary after adding ammonium sulphate, the ferrous ammonium sulphate being separated, redissolved and treated as in (a).  The pickling liquor may be continuously regenerated by withdrawing portions thereof for treatment as in (b) and returning the mother liquor, freed from ferrous ammonium sulphate, to the bath with additions of water and ammonium bisulphate sufficient to compensate for losses. Specification 572,336 is referred to.
Patent GB-1285524-A (GB)
Title: Gas compressor impeller and shaft assembly
IPC: F16D1/091
Filed: 1971-04-19
Abstract: 1285524 Mounting impellers on shafts WESTINGHOUSE ELECTRIC CORP 19 April 1971 [26 Feb 1970] 23208/71 Heading F2U A hub 11 of an impeller has on both sides conical faces 24, 25 coaxial with a bore 23, resilient friction washers 26, 30 having faces 28, 31 mating with the faces 24, 25, the faces 28, 31 being of slightly different cone angles to the faces 24, 25 when the washers are unloaded, there being a shaft 12 with an extension (e.g. a bolt 22) passing through the bore 23 and the washers, to compress the washers and hub axially between shoulders 21, 33. The faces 28, 31 may have the smaller cone angle.