baber/WOPTO huggingface dataset:
Patent GB-1499066-A (GB)
Title: Process for isolating anthraquinone
IPC: C07C51/573
Filed: 1976-07-16
Abstract: 1499066 Separation of anthraquinone BAYER AG 16 July 1976 [19 July 1975] 29721/76 Heading C2C Anthraquinone is separated from a mixture containing at least one part by weight of phthalic anhydride per part by weight of anthraquinone (particularly a mixture obtained from the oxidation of naphthalene) by feeding the mixture to a first distillation column which is operated under reduced pressure (usually 100-900 millibars) to obtain a top product comprising the phthalic anhydride and any impurities which have lower boiling points than anthraquinone, and a sump product; feeding the sump product to a vaporizer from which anthraquinone is obtained in vapour form, any impurities in the sump product having higher boiling points than anthraquinone being discharged ; and feeding the anthraquinone vapour into a second distillation column from which virtually pure anthraquinone is obtained as a top product. Some of the phthalic anhydride from the top of the first column may be recycled to the feed mixture to increase the proportion of phthalic anhydride therein, the remainder being isolated, and a part of the anthraquinone from the second column may be recycled to the first column. The feed product for the first column may itself be fed to a vaporizer, from the sump of which high-boiling by-products together with part of the anthraquinone and small amounts of phthalic anhydride may be taken off and optionally worked up separately, the vapours formed being introduced into the first column, particularly into the middle region thereof. The vaporizer (or vaporizers) may be of the falling film, thin-film or circulation type, and the columns may be sieve tray, bubble cap tray or packed columns.
Patent GB-1237082-A (GB)
Title: Fluoronitrobenzene derivatives
Inventor: BELF LEON JERZY
IPC: C07C205/12
Filed: 1967-06-28
Abstract: 1,237,082. Fluoronitrobenzene derivatives. IMPERIAL SMELTING CORP. (N.S.C.) Ltd. 26 Sept., 1968 [28 June, 1967], No. 29736/67. Addition to 1,141,358. Heading C2C. The invention comprises 2,3,4,6- and 2,3,5,6- tetrafluoronitrobenzoic acid, 3, 3<SP>1</SP>-dinitrooctafluorobiphenyl and 2,3,4,6-tetrafluorobromonitrobenzene. The compounds are prepared by nitrating 2,3,4,6- and 2,3,5,6-tetrafluorobenzoic acid, 3,3<SP>1</SP>-dihydrooctafluorobiphenyl and 2,3,4,- 6-tetrafluorobromobenzene with fuming nitric acid in the presence of a Lewis acid in a polar aprotic solvent inert to the nitrating mixture.
Patent GB-212854-A (GB)
Title: Improvements in double lift dobbies for looms
IPC: D03C1/06
Filed: 1923-11-27
Abstract: 212,854. Duckworth, J. H. Nov. 27, 1923. Dobbies; shedding-levers.-A double lift dobby comprises pairs of pendent hooked levers d<1> - - d<2> supported by cross rods c connecting arms b on a shaft a which is oscillated from the tappet shaft. These levers d<1>, d<2> can engage undercut or hook like parts e<2> on heald-shaft operating- levers e, this engagement being controlled by cranked plate-like levers h<2>, h<3> acted upon by the lags on a pattern barrel h. The levers d', d<2> may fit through slots in the levers e or may pass between these levers, which are then provided on one or both sides with lateral undercut projections for the hooks. The levers e operate companion lifting-levers e<3> by means of arms e<5>. The levers h<2> pass through a grid i.
Patent GB-1432771-A (GB)
Title: Recording method
IPC: B41M5/30
Filed: 1972-06-26
Abstract: 1432771 Photographic processes. AGFA-GEVAERT 18 June 1973 [26 June 1972] 29915/72 Addition to 1359472 Heading G2C A process for forming a dye image comprises imagewise exposing to heat in the presence of  visible light, e.g. up to 20%, a material containing (i) a spiropyran, (ii) an organic halogen (iii) a homo- or co-polymer of N-vinyl carbazole containing at least 20 per cent N.V.C. units and (iv) a heterocyclic nitrogen-containing compound containing the following group or its tautomer. The material may also contain an amide or ureido compound of formula R, CONHR 2  wherein R 1  is alkyl, aryl or heterocyclic, -NHR 3  or NR 3 R 4  group in which R 3  and R 4  are alkyl or aryl and R2 is H or alkyl, aryl or heterocyclic group. In the examples mercaptobenzothiazole and polyvinyl carbazole are used as components (iii) and (iv). The dye image may be stabilized by heating and/or applying a solvent to remove the organic halogen or applying a mineral oil at 145 to 165C and removing any residual oil films. Specification 1359472 discloses a process for forming dye images wherein a material containing (i) and (ii) above and a sensitizer such as (iv) and/or (iii) above is uniformly exposed to U.V. and/or visible and imagewise exposed to visible or infrared.
Patent GB-1521936-A (GB)
Title: Locking mechanism for safety equipment boxes
IPC: E05B63/12
Filed: 1976-07-19
Abstract: 1521936 Fastening mechanism R ALKAN & CIE 19 July 1976 [29 July 1975] 29929/76 Heading E2A  Fastening mechanism comprises a piston 12 slidable in a fixed body 3, balls 9 urged by piston 12 into engagement with an internal groove 8 in movable member 4 to be fastened to the fixed body 3, a spring 22 compressed by the engagement and a release control member 24, 26, 27 which retains the spring compressed or, when actuated, enables the compressed spring to move the piston 12 to retract balls 9 from groove 8 and separate members 3, 4.
Patent GB-1046964-A (GB)
Title: Device for handling one end of a length of yarn in a loom
IPC: D03J3/04
Filed: 1963-07-29
Abstract: 1,046,964. Travelling-wave shedding looms. VERWALTUNGSGESELLSCHAFT DER VERKZEUG MASCHINENFABRIK OERLIKON. July 29, 1963. [July 30, 1962], No. 29967/63 Heading D1E. Each shuttle before entering the shed passes over air jets 15 which blow the weft end upwards into the nip between an endless belt 3 and a pulley 5. As the shuttle enters the shed, the weft end is carried round until the belt leaves the pulley in the vicinity of the fell. Meanwhile, the weft has been beaten up by blades 18 and the shed has changed, whereby the weft is still held for paying out from the shuttle.
Patent GB-300139-A (GB)
Abstract: 300,139. Tecalemit, Ltd., (Assignees of Soc. Anon. des Etablissements TÚcalÚmit). Nov. 5, 1927, [Convention date]. Controlling consuming devices; charging and discharging batteries.-Means for automatically breaking the circuits of accumulators in automobiles comprise a manually actuated switch and a device under the control of the oil pressure of the engine, the device acting either to lock the manual switch and release it, according to the oil pressure, or to close a contact which is substituted for the manually operated contact. Fig. 1 shows the position of such a switch when the engine is just started, the manual switch 3, 4 having been depressed against spring action to bring a spring-controlled contact 5 against an insulated terminal 7 of a conductor 9, which is thereby earthed. When the oil pressure is sufficient, it acts on a diaphragm 13 controlled by a spring 17 and, by means of a member 12 with a forked end 12', pushes back a spring-controlled locking plunger 10 from a shoulder 3<2> on the rod 3, thereby allowing the rod to retract a little until arrested by the end 12'. The circuit still remains closed owing to the spring 6, but when the engine stops and the oil pressure ceases, the diaphragm 13 and member 12 are retracted and the rod 3 is allowed to return under the action of its spring and break the circuit. When it is not desired to bring the oil circuit up to the dashboard, the oil pressure device 1 (Fig. 2) may be shunted by an electromagnetic switch 21, which is closed by a press-button 20 on the dashboard. A maintaining circuit for the switch 21 is thereby made, and the engine is started up, the switch 21 being opened when the oil pressure closes the switch 1. Fig. 4 shows another form of oil pressure switch in which a rod 33 connected to the diaphragm actuates a pivoted arm 34 by means of a dead-centre spring 36 into, and out of, engagement with a spring 37.
Patent GB-229028-A (GB)
Title: Improvements in lamps for motor cars and other road vehicles
IPC: F21V14/02
Filed: 1923-11-29
Abstract: 229,028. Ireland, F. Nov. 29, 1923. Vehicle lamps; mounting electric lamps in lanterns; lens holders special to lanterns. - An anti-dazzle vehicle lamp comprises a preferably parabolic axially adjustable reflector 17, an axially adjustable light source 5, and two, preferably plano-convex, lenses 23, 22, mounted in telescopic holders 21, 20, the holder 20 being bolted to the casing 12. The light source 5 preferablv consists of an electric lamp, which is secured in a screw-threaded carrier 7, passing through an aperture in the reflector 17 and a ring 13 on the casing 12, and provided with an operating-nut 14, held in position by a bridge piece 15, and a lock-nut 14a. The holder 21 is preferably provided with a bolt, passing through a spiral slot 26 in the holder 20 and secured in adjusted position by a nut 27, or it may be adjusted by a rack and pinion. Plano-concave or double concave lenses may be used. According to the Provisional Specification, the lenses may be adjusted relatively to the light source, which may be an acetylene burner.
Patent GB-854927-A (GB)
Title: New epoxy resin compositions
Inventor: HARRISON STUART AMOS
IPC: C08G59/50
Filed: 1958-09-19
Abstract: Epoxy resins derived from polyhydric phenols and poly functional halohydrins and/or glycerol dichlorhydrin may be hardened by diimidazolines of the formula:  <FORM:0854927/IV(a)/1> where A is an aromatic nucleus, R1, R2, R3 and R4 are any of H and C1-5 alkyl groups, and k is an integer 1-5.  The epoxy resins may be derived from resorcinol, bisphenol A or the reaction products of phenol with formaldehyde, acetaldehyde, acetone or methyl ethyl ketone.  The diimidazolines are derived (see Group IV(b)) from aromatic dicarboxylic acids or esters thereof, e.g. o, m or p phthalic, or dimethyl terephthalate, and polyamines of the formula H2N(CR1R2. CR3R4.NH)kH, e.g. ethylene diamine, diethylenetriamine, triethylene tetramine, tetraethylene pentamine, di-1, 2-propane triamines, or mixtures thereof.  Further polyamines may be added, e.g. the polyamino polyamide derived from dilinoleic acid, triethylene tetramine and tetraethylene pentamine.ALSO:Diimidazolines of the formula:  <FORM:0854927/IV(b)/1> where A is an aromatic nucleus, R1,R2,R3 and R4 are any of H and C1-5 alkyl groups, and k is an integer 1-5, may be prepared from aromatic dicarboxylic acids or esters thereof (e.g. o, iso -or tere-phthalic) and polyamines of the formula H2N (CR1R2,CR3R4,NH)kH, e.g. ethylenediamine, diethylene triamine, triethylene tetramine, tetraethylene pentamine, di-1,2-propane triamines, or mixtures thereof.  The diimidazolines are used for hardening epoxy resins (see Group IV(a)).  In examples:-(1) isophthalic acid is reacted with diethylene triamine at temperatures of 196-300 DEG C, further diethylene triamine is added, and the reaction is completed at temperatures of 211-315 DEG C.; (3) isophthalic acid is reacted with diethylene tetramine at 200-304 DEG C.; (4) as (3) but using triethylene tetramine; (5) as (3) but using tetraethylene pentamine; (6) as (3) but using dimethyl terephthalate and tetraethylene pentamine.
Patent GB-450532-A (GB)
Title: Improvements in speed governor apparatus
IPC: F02D1/00
Filed: 1934-10-20
Abstract: 450,532. Speed governors. HERCULES MOTORS CORPORATION, 201, 11th Street Southeast, Canton, Ohio, U.S.A. Oct. 20, 1934, No. 30133. Convention date, Oct. 20, 1933. [Class 57] A speed-governing mechanism for an internalcombustion engine comprises a centrifugal governor driven through gearing 28, 33 from the shaft 12 of the fuel injection pump and consists of weights 36 integral with arms having projections 38 engaging the sleeve 41, and projections 39 engaging a boss to limit the travel of the weights. A ring 43 is mounted upon the sleeve 41 and pins sliding in a groove 52 connect it to a ring-shaped lever 48 encircling the shaft 29 and pivoted at 45. An upper corner of the lever 48 is connected by a link 55, adjustable in length to the rod 20 which adjusts the output of the fuel injection pump. The lever 48 is loaded by a light adjustable spring 70. The other corner of the lever 48 is connected by a pin and slot 59 to an abutment of the tension spring 62 the other abutment being connected to a lever 66 actuated by the operator. The two spring abutments include a projection and groove cooperating with each other so that to stop the engine the lever 66 is moved anticlockwise and through lever 48 moves the rod 20. For idle running the lever 66 is adjusted.so that the governor is loaded only by the spring 70, the slot 59 allowing regulating movements. Further movements of the lever 66 in a clockwise direction extends the spring 62 and varies the loading of the governor and the speed at which it controls the engine.
Patent GB-383396-A (GB)
Title: Improvements in screwdrivers
IPC: B25B23/10
Filed: 1931-10-31
Abstract: 383,396. Screwdrivers. BROWN, R. W., 4, Rosslyn Crescent, East Lane, North Wembley, SMITH, A. G. H., Highlands, Kewferry Hill, Northwood, both in Middlesex, and CLAISSE, A. J., 54, Eton Avenue, Hampstead, London. Oct. 31, 1931, No. 30209. [Class 61 (iii).] A screwdriver of the type adapted to hold a screw at its operative end prior to screwing has a wedge-shaped divided blade, the portions 2, 3 of which are set out of alignment, Fig. 3, so that they grip the side walls of the slot in a screw-head when pushed therein. A modification in the operative end of the blade is shown in Fig. 4.
Patent GB-181315-A (GB)
Title: A machine for moulding bodies out of plastic material
IPC: B30B11/16
Filed: 1921-11-12
Abstract: 181,315. Grossmann, H. June 6, 1921, [Convention date]. Addition to 172,287. Rolling-machines.-The shafts 4, 5 of the discs 1, 2 are yoked together by a member 37 having at one end a bush 39 embracing the shaft 4 and at the other an eccentric bush 40 adjustable by a nut 41 to regulate the pressure between the discs.
Patent GB-365087-A (GB)
Title: Apparatus for cleaning jointing caps of regular or irregular shapes as used in steamboilers or similar plant
IPC: B25B27/00
Filed: 1930-10-10
Abstract: 365,087. Portable turning- apparatus. COLLINGE, J., Beech Edge, Kensington Road, Cleveleys, Lancashire, and MILLS, E., 2, Glenfyne Road, Pendleton, Manchester. Oct. 10, 1930, No. 30320. [Class 83 (iii).] A tool for use in clearing material from elliptical &c. caps, such as used in steam boilers, comprises a cutter a3 carried in a spring- pressed spindle a<1> a n d bearing against a face s<3> of a cap s<4> which is held stationary, the cutter being secured on a stud s of the cap by a nut s<1>. The Provisional Specification states that the cap may rotate while the tool is stationary.
Patent GB-357391-A (GB)
Title: Improvements in rubber and like top boots
IPC: A43B3/02
Filed: 1930-10-10
Abstract: 357,391. Ventilating footwear. JEP. SEN, M., Varde, Denmark. Oct. 10, 1930, No. 30394. [Class 17 (ii).] Rubber and like top boots have formed at the front of the upper b an air space d to serve as a bellows under the influence of the movement of the foot in walking to pump air through a channel g which communicates at one end h with the atmosphere and at the other end with the boot interior at the foot through apertures f. Flap valves i, j are provided in the channel to compel the air to pass in the proper direction. The front part of the upper over the air space at the instep may be pleated and the channels may open to the atmosphere through holes in the beaded edge of the upper. Wire coils may be fitted in the channels to maintain their shape.
Patent GB-1071809-A (GB)
Title: Stainless steel and articles
IPC: C22C38/42
Filed: 1964-08-04
Abstract: A stainless steel has the following percentage composition:-  .C.up to 0.15 .Mn.0.4 - 2 .Si.0.15 - 1 .Cr.16 - 19 .Ni.5.5 - 8 .Cu.0.5 - 3.5 .N.0.02 - 0.1 .Fe.the remainder
Patent GB-1077387-A (GB)
Title: Liquid heating apparatus
IPC: B01J8/06
Filed: 1965-07-19
Abstract: 1,077,387. Liquid heating furnaces. LUMMUS CO. July 19, 1965 [July 23, 1964], No. 30584/65. Heading F4B. In a liquid heater having tubes 30, 30<SP>1</SP> arranged between heat radiating walls 16, reradiators 44 are arranged between and equidistant from adjacent tubes. The tubes may be arranged in a plane midway between two flat burner heated walls, or may be arranged in a cylindrical band equidistant from the cylindrical burner heated walls of an annular heater. The reradiators are elongated, may be rectangular in cross-section or present concave or convex surfaces to -either the tubes or the burners.
Patent GB-780597-A (GB)
Title: Apparatus for grading tablets, sweets or like pieces according to thickness
IPC: B07C5/06
Filed: 1954-10-25
Abstract: 780,597. Sorting solid materials. THOMPSON J. W., and THOMSON, J. K. Jan. 24, 1956 [Oct. 25, 1954], No. 30615/54. Class 117 Tablets, sweets, or like pieces p are (graded according to their thickness by being fed on their edges by a shoot 4 on to the upper part of the peripheries of a pair of spaced discs 1 rotating about a horizontal axis, and having their faces spaced apart a distance equal to the critical thickness desired, so that the thinner pieces fall between the discs and are delivered to a shoot 5 and the thicker pieces pass round the peripheries to a shoot 6. The shoots include deflectors 4a, 5a and 6a. To provide a further grading the outputs from the shoots may be fed to further pairs of discs. In the modification of Fig. 5 each one of a pair of discs 1 has a step 1b on its inner face so that pieces of medium thickness are caught by the steps and pass to a shoot 5. The thickest and thinnest pieces are delivered to shoots 6 and 7 respectively. A row of discs may be mounted on a shaft to deal with several rows of pieces delivered to them by a conveyer.
Patent GB-417702-A (GB)
Title: Improvements in or relating to the manufacture of strip metal and rims for vehicle wheels
IPC: B21B1/22
Filed: 1933-11-04
Abstract: 417,702. Rolling. DUNLOP RUBBER CO., Ltd., GOODYEAR, E. F., and MARSH, E. B., 32, Osnaburgh Street, London. Nov. 4, 1933, No. 30676. [Class 83 (iv).] The rough edges of a metal strip 1 for tyre rims, are smoothed and curved by pulling the strip between a series of rolls 4 with parallel groove faces 9 meeting in an upward curve 11, the strip being guided between top and bottom plates 3, 4. The pass of the rolls is adjustable by a right and left hand screw and a handwheel 14. The roll shafts are provided with oil grooves 19. The rolls may be advanced towards each other progressively as the work is rolled.
Patent GB-618026-A (GB)
Title: Improved anti-rattle device for securing doors, lids and the like
IPC: E05C19/04
Filed: 1946-10-15
Abstract: 618,026. Catches. COPE, J. C. Oct. 15, 1946. No. 30682. [Class 44] A catch comprises two rollers, rings or blocks having curved operative edges and flat side faces which are urged towards each other so as yieldingly to engage a bit or tongue forced between them. In the form shown, two rings a, b are urged together by springs d and engage a tongue comprising two parallel pins h. In a modification, the springs are replaced by blocks of soft rubber. In another form, two D-shaped slidable blocks are forced together by strip springs. According to the Provisional Specification, the bit may be shaped as shown in Specification 564,873.
Patent GB-829428-A (GB)
Title: Improvements in flint glass
IPC: C03C3/21
Filed: 1956-10-10
Abstract: 829,428. Glass compositions. ZEISSSTIFTUNG, C., [trading as JENAER GLASWERK SCHOTT & GEN.]. Oct. 10, 1956 [Oct. 11, 1955], No. 30900/56. Class 56. A transparent flint glass substantially free from fluorine and which has a low optical refraction and high dispersion, contains phos. phorus pentoxide and aluminium oxide, titanium oxide and at least two oxides selected from the oxides of sodium, potassium and magnesium, wherein the molecular ratio between phosphorus pentoxide is within the range 10 : 1 to 2: 1, the amount of aluminium oxide not exceeding 8À5 mol. per cent. P 2 O 5  bonded to one or more metal oxides preferably of Na, K and Mg is added to the frit and up to 5 mol. per cent of K 2 TiF 6  added as fluxing agent. The glass may contain up to 12 mol. per cent of ZnO and conventional melt additives such as SiO 2  and B 2 O 3  to increase stability. A number of examples are given.
Patent GB-463489-A (GB)
Title: Improvements in or relating to rotary internal combustion engines
IPC: F02B53/00
Filed: 1935-11-08
Abstract: 463,489. Rotary internal-combustion engines. PRIDHAM, J. E. Nov. 8, 1935, No. 30915. [Class 110 (ii)] A rotor C on a shaft D has one or more pistons J, J<1> on its periphery, which move in an annular ring a<3> in a casing a<2>. One or more rotary abutments F, F<1> on shafts f<2> are driven by gears f<3> to rotate in the same direction as the rotor. The abutments have recesses to allow the passage of the pistons, and are also provided each with a compression chamber L and a port which alternately connects the working chamber with an inlet or an exhaust. The engine operates on the four-stroke cycle and the compressed mixture is fired by a plug. Alternatively, the engine may operate on the Diesel principle. In Fig. 4, the piston J is inducing gas behind it, through a port L, and compressing gas before it into the compression space in the abutment F<1>. At the same time gas has been fired and is expanding behind the piston J<1> which is sweeping burnt gases before it to an exhaust port in the abutment F. The engine may be duplicated on each side of a plane passing at right angles through the shaft D.
Patent GB-882096-A (GB)
Title: Organosilicon compounds and processes for producing same
IPC: H02H9/02
Filed: 1957-10-03
Abstract: Organosilicon compounds containing an amino group attached to silicon through a polymethylene group of at least 3 carbon atoms are prepared by hydrogenating a cyanoalkyl silicon compound containing the group NC(CH2)aSi­, where a is greater than 1.  The organosilicon compounds may be silanes prepared particularly from compounds of the formula <FORM:0882096/IV (a)/1> where R is alkyl, aryl or alkaryl, R1 is alkyl, a is greater than 1 and y is 0, 1 or 2, or polysiloxanes prepared from the corresponding cyanoalkyl siloxanes.  A number of d -aminobutylalkoxy silanes are claimed per se.  The siloxanes are claimed in Specifications 882,062 and 882,069.  The starting materials are described in Specifications 847,803 and 847,804. The process may be effected by mixing the starting silicon compound with hydrogen and a catalyst in a pressure vessel and heating.  Pressures of at least 500 lbs./sq. in. are preferably employed with a wide range of temperatures, preferably 80-140 DEG C. A mixture of mono-, bis-, and tris-substituted amines is formed, but the presence of ammonia during the reaction results in increased yields of the mono-substituted amine.  Suitable catalysts are platinum or palladium, alone or with g -alumina, or with an inert support, or nickel, Ramey nickel, Raney cobalt and certain cyclopentadiene metals such as bis(cyclopentadienyl)-nickel.  The reaction may be effected in an organic liquid, e.g. saturated alcohols and aromatic hydrocarbons. The examples describe the preparation of mono-, bis- and tris-(triethoxysilylbutyl)amines, diethoxymethylsilylbutylamine, dimethylethoxysilylbutylamine, triethoxysilylpentylamine, mono-, bis- and tris-(triethoxysilylpropyl)amines and diethoxymethylsilylpropylamine.  Uses: pesticides, fungicides, herbicides, insecticides, and sizes for fibrous glass materials as described in Specification 882,055.  Reference has been directed by the Comptroller to Specifications 684,296, 769,498 and 786,020.