baber/WOPTO huggingface dataset:
Patent GB-306963-A (GB)
Title: Process for the manufacture of new anthraquinone derivatives
IPC: C09B1/32
Filed: 1929-02-27
Abstract: 306,963. I. G. Farbenindustrie Akt.- Ges. Feb. 29, 1928, [Convention date]. Anthraquinone derivatives which contain in a #-position a cyano group and in at least one alpha-position an arylamino group, are prepared by converting an alpha-arylamino-#-halogenanthraquinone to the corresponding #-cyano derivative or an a-negatively substituted-#-cyanoanthraquinone to the corresponding a-arylamino derivative. Wool dyestuffs are obtained by sulphonation of the products. According to examples : (1) 1-p-tolylamino-3-bromanthraquinone (obtained from 1 : 3- dibromoanthraquinone and p-toluidine) is heated with cuprous cyanide in quinoline and the product sulphonated (dyes wool red); (2) 1-amino-2- bromo-4-p-tolylaminoanthraquinone is treated as in (1) (dyes wool greenish-blue); (3) 1-metbylamino-2-cyano-4-bromoanthraquinone (obtained by brominating 1-methylamino-2-cyanoanthraquinone) is heated with p-toluidine and sodium acetate and the product sulphonated (dyes wool green). The Specification as open to inspection under Sect. 91 (3) (a) refers also to the replacement of #-sulpho groups by cyano radicles, and to the use of the unsulphonated dyestuff bases as wool dyestuffs. This subject-matter does not appear in the Specification as accepted.
Patent GB-525744-A (GB)
Title: Apparatus for clearing suction
IPC: E02F3/90
Filed: 1939-02-27
Abstract: 525,744. Suction dredgers. SILKE, G. P. Feb. 27, 1939, No. 6477. Convention date, March 1, 1938. [Class 68 (i)] For clearing a suction line, an aperture is provided in a tubular part of the line above the lower surface thereof and a gate valve is slidably mounted in guides on opposite sides of the aperture and is movable to admit water to reduce the suction at the line entrance. The suction pipe 10 has a lateral opening normally closed by a gate 14 adapted to be opened, as by linkage 16, 19, 21, to admit water and so relieve suction at the nozzle so that material blocking the nozzle falls away. The lateral opening may be above water level and admit water through a depending pipe. The gate may be controlled automatically for operation at predetermined intervals or by the amount of vacuum, and it may be maintained slightly open when working in fine material. The Specification as open to inspection under Sect. 91 states also that the aperture may be above water and admit air. This subject-matter does not appear in the Specification as accepted.
Patent GB-1529891-A (GB)
Title: Detection of hepatitis b surface antigen by latex agglutination
IPC: G01N33/576
Filed: 1976-02-18
Abstract: 1529891 Detecting Hepatitis B antigen PFIZER Inc 18 Feb 1976 [19 Feb 1975] 06477/76 Heading G1B Hepatitis B surface antigen is detected in human blood by (a) mixture of red blood cell free test samples with a diagnostic composition comprising an aqueous suspension of uniformly sized synthetic resin particles coated with purified antibody specific to Hepatitis B antigen and (b) testing any specimen giving a positive reaction in (a) by mixing a further test sample with human Hepatitis associated antibody and subjecting the mixture to step (a) and (c). Testing any specimen that given a positive reaction in (b) by mixing a further sample with latex beads coated with human jglobulin, to remove any rheumatoid factor that is present and subjecting the thus purified sample to step (a) and if a positive result, viz agglutination, is obtained subjecting the sample to (b) wherein the following test results show Hepatitis B surface antigen to be present:
Patent GB-1196643-A (GB)
Title: Processes for Preparing 8-Hydroxy-Gonatrienes and 8-Hydroxy-Gonatetraenes
IPC: A61K/
Filed: 1967-06-20
Abstract: 1,196,643. 8-Hydroxy steroids. AMERICAN HOME PRODUCTS CORP. 20 June, 1967 [21 June, 1966; 19 Aug., 1966], No. 6551/70. Divided out of 1,196,642. Heading C2U. The invention comprises (A) compounds of Formulae III and IV. wherein R is H or alkyl, R<SP>1</SP> is alkyl, Y is H or a group which is ortho-para directing in electrophilic aromatic substitution and X is carbonyl, ketalized carbonyl (including hemithioketalized and thioketalized carbonyl),ethylide hydroxymethylene, esterified hydroxymethylene, or a group CR<SP>2</SP>R<SP>3</SP> where R<SP>2</SP> is an optionally substituted alkyl, alkenyl or alkynyl group and R<SP>3</SP> is hydroxy or carboxylic acryloxy; and (B) the preparation of a 3-Y-8-hydroxy-13-alkylgona-1,3,5(10),9 (11)-tetraene(X) (where Y is as defined above) under mild acid conditions from a 3-Y-8,9-epoxy-13-alkylgona-1,3,5(10)- triene(XI) ; and (c) the preparation of a 3-Y-8- hydroxy-13-alkyl-gona-1,3,5(10)-triene by catalytic hydrogenation of X or by metal hydride reduction of XI. Epoxy compounds XI are prepared by epoxidization of 3-Y-13-alkylgona- 1,3,5(10),8-tetraenes and the latter are prepared by hydrogenation of the corresponding gona- 1,3,5(10),8,14-pentaenes. Any of the aforementioned classes of products, intermediates and starting compounds may be subjected to conventional interconversions. Compounds of Formulae III and IV wherein R,R<SP>1</SP> and X are as defined above and Y is hydroxy, carboxylic acyloxy or "alkoxy" are stated to possess lipid-depressing and estrogenic activities and may be made up with carriers into pharmaceutical compositions for oral, parenteral and rectal administration. "Alkoxy" is defined as a cyclic or acyclic, substituted or unsubstituted aliphatic ether group.
Patent GB-1462007-A (GB)
Title: Desulphurization of transition metal alloys
IPC: C21C7/10
Filed: 1975-02-17
Abstract: 1462007 Desulphurizing transition metal alloys SPECIAL METALS CORP 17 Feb 1975 [27 Feb 1974] 6602/75 Heading C7D A metal alloy containing a substantial amount of one or more of iron, nickel and cobalt is desulphurized by contacting the molten alloy substantially in the absence of an oxygen containing atmosphere with a Ca-Ni or Ca-Al alloy. The melt may be treated in a vacuum melting furnace using either a vacuum or argon atmosphere and may be deoxidized prior to desulphurization.
Patent GB-1536012-A (GB)
Title: Electrostatic copying apparatus
IPC: G03G21/00
Filed: 1976-02-19
Abstract: 1536012 Cleaning photoconductive surfaces AGFA-GEVAERT AG 19 Feb 1976 [19 Feb 1975] 06632/76 . Heading B6C A photoconductive imaging surface in a copying machine, e.g. the surface of a drum 1, is precleaned by a brush 12, rotatably driven solely by friction with said surface, to dislodge any carrier particles present and then finally cleaned by wiping to remove toner particles. Wiping may be effected by a web 6 backed by a pressure roller 8, as shown, or by a cleaning roller of foam material which after contacting the drum 1 transfers the wiped off toner particles to a cleaning web. The entire cleaning apparatus is preferably arranged in a slide-in unit removable from the copying machine.
Patent GB-698282-A (GB)
Title: Improvements in or relating to the production of sodium methoxide
IPC: C07C29/70
Filed: 1951-03-20
Abstract: A process for the production of sodium methoxide comprises reacting methanol with caustic soda, distilling off without fractionation the water-methanol mixture present in the resulting equilibrium mixture while simultaneously adding fresh dry methanol in amount sufficient to replace that removed by distillation and recovering the sodium methoxide from the product.  In the examples methanol and caustic soda are heated in a reactor fitted with a methanol feed pipe and still head. Methanol is fed in as soon as the methanol and entrained water begin to distil.  Sodium methoxide is recovered from the methanol solution in the reaction by evaporation of the solvent and then blowing dry nitrogen through the heated apparatus. Specifications 625,453 and 629,184 are referred to.
Patent GB-462576-A (GB)
Title: Improvements relating to the hydration of olefines
IPC: C07C29/04
Filed: 1936-03-05
Abstract: <PICT:0462576/IV/1> Olefines are dissolved in aqueous sulphuric acid so dilute that corresponding alcohols are formed in the free state without formation of alkyl sulphuric acid and are extracted by suitable solvents unaffected by the acid which may be re-used. Solvents specified are phenols, cresols, their homologues, their ethers such as anisol, phenetol, and phenyl ether, and their derivatives such as phosphates.  Water is preferably added to maintain the acid concentration constant and may first be used to wash out acid from the solvent extract of the alcohol.  Moderately raised temperature and superatmospheric pressure are preferably employed as well as catalysts such as oxides of copper, silver, lead, bismuth, or gold.  Pure olefines or olefine mixtures, or mixtures with inert gases can be treated.  Butylene is fed from a gasometer 2 at atmospheric pressure to a vessel 1 having agitating and cooling means and containing 72 per cent sulphuric acid with, e.g. 0,5 per cent cuprous oxide.  Temperature is allowed to reach 50 DEG  C.  When an alcohol content of 20--25 per cent is attained, part of the liquid is passed to a mixer 3 fed also with twice the volume of, e.g. tricresyl phosphate from tank 5.  The mixture separates in decanter 4 and the lower layer of acid solution and unextracted alcohol is returned to vessel 1.  Complete extraction is possible using a battery of extractors but not advantageous. The upper layer of slightly acid solvent is mixed with the necessary additional water in one or more mixers 8 and separates in 10, the aqueous layer returning to vessel 1 and the solvent layer passing to a column 12 heated by bubbling in steam when an azeotropic mixture of secondary butyl alcohol and water is collected.  The mixture of water and solvent collecting at the bottom passes via cooler 13 to decanter 14 and the solvent is returned to tank 5.  In further examples: (2) propylene is absorbed in 75 per cent acid at 40 DEG  C. and 3 atm.  Butyl cresol is used for the extraction; (3) isobutylene is absorbed in 58 per cent acid at 50 DEG  C. and the tertiary butyl alcohol extracted with a mixture of cresols; (4) liquid trimethylethylene is absorbed in 50 per cent acid at not more than 10 DEG  C. and the amyl alcohol extracted with a mixture of ethyl phenols.  Distillation in the column 12 gives an azeotropic mixture which separates in decanter 16, the upper alcohol layer being dehydrated and separated. Specification 410,816 is referred to.
Patent GB-263355-A (GB)
Title: Improvements in or relating to the printing of fabrics and articles made of or containing cellulose ester or ethers
IPC: D06Q1/02
Filed: 1926-03-12
Abstract: 263,355. British Celanese, Ltd., (American Cellulose & Chemical Manufacturing Co., Ltd.). March 12, 1926. Inkless printing by chemical reaction.-Fabrics or articles composed partly or wholly of threads, yarns, or fibres of cellulose acetate or other esters or ethers of cellulose, are printed, in order to obtain ornamental or other effects, by applying to portions of the fabrics &c., a mixture of a solvent for the cellulose acetate or the like, an inert powder, and a thickening-agent, and allowing the mixture to remain in contact therewith at a temperature below about 125‹ C., until a part at least of the cellulose acetate or the like is removable by washing. The mixture preferably consists of lactic acid, infusorial earth, dextrin, and water, but other solvents, such as acetic acid. acetone &c., and other thickeners, such as powdered cellulose, barium sulphate, or the like which have no chemical action on the solvent or other constituent of the mixture, may be used.
Patent GB-456258-A (GB)
Title: Improvements in or relating to boxes or crates
IPC: B65D6/16
Filed: 1936-03-09
Abstract: 456,258. Boxes or crates. HARVEY, R. G., 3, Foundry Hill, Hayle, Cornwall. March 9, 1936, No. 6963. [Class 18] A wooden box or crate, of the kind in which the corner pieces D of the sides or ends are pivoted to the ends or sides, has pivots each comprising a hollow sheet metal tube C driven through a cross batten A into an upright corner piece D. Interchangeable tops and bottoms F having sliding centre slats H are provided, slots I in the slats H engaging nails or rivets J in cleats G at the ends of the tops or bottoms.
Patent GB-372016-A (GB)
Title: Improvements in document files
IPC: B42F13/02
Filed: 1931-03-06
Abstract: 372,016. Filing papers. CASSIN, P., 19, Eastcheap, London. March 6, 1931, No. 7007. [Class 146 (i).] In document files of the kind in which the documents l are held between covers a, d by a lace threaded through apertures h in the covers and documents, the lace is in one or two lengths and consists of an inextensible part g and a spring part j of limited extensibility, and the free ends of the lace are each separately provided with a hook or stud q<1> engaging one of a series of holes n in a plate m extending along one of the covers. Each spring is secured at one end k in a recess i in the cover a and has a hooked link r extending therethrough to limit its extensibility. The plate m is secured to the cover d by eyelets o through which the lace passes. When the lace is in one length, the middle part thereof extends slackly through and is attached to the ends of a single helical spring j. A binding flap s on the cover a can be secured to the cover d by pasting when the file is full.
Patent GB-715464-A (GB)
Title: Improvements in or relating to resonant-space resonators for high-frequency apparatus
IPC: H01J25/12
Filed: 1950-03-21
Abstract: 715,464. Velocity-modulated tubes. SPERRY CORPORATION. March 21, 1950 [March 30, 1949], No. 7009/50. Drawings to Specification. Class 39(1) [Also in Group XL(b)] In a klystron having a cylindrical cavity resonator in which the electron stream travels diametrally between two entrant portions, temperature compensation of the resonant frequency is obtained by making one of the entrant portions of a coefficient of linear expansion small in relation to that of the other entrant portion. The entrant portion having the relatively small coefficient of expansion may be of molybdenum or may comprise a composite body consisting of an alloy containing iron, nickel cobalt, manganese and carbon, as known under the Registered Trade Mark " Kovar ", plated with copper. The remainder of the resonator including the other entrant portion may consist of copper or steel in the former case, or of copper in the latter case. The invention is described with reference to the multi-resonator klystron described in Specification 715,463. Specification 537,518 also is referred to.
Patent GB-879704-A (GB)
Title: Improvements in or relating to pneumatic suspension for motor vehicles
Inventor: HAMEL DENIS
IPC: F16F9/04
Filed: 1960-02-29
Abstract: 879,704. Pneumatic springs. PNEUMAT1QUES ET CAOUTCHOUC MANUFACTURE KLEBER COLOMBES. Feb. 29, 1960, No. 7020/60. Class 108(3). In a pneumatic spring of the type in which a flexible diaphragm 12 Fig. 3 is deformed by a piston 16 the spring rate is adjusted by varying the shape of the internal face of the container 18 on which the diaphragm rolls. The shape may be varied mechanically by the use of jointed or relatively slidable elements but in the particular example the container 18 is lined by a flexible inflatable container 19 which is inflatable to reduce the overall radial dimensions of the diaphragm 12. The system may be applied to a spring in which a flexible air chamber is squeezed between two rigid elements.
Patent GB-633368-A (GB)
Title: Time base generator
IPC: H03K4/28
Filed: 1947-03-14
Abstract: 633,368. Sawtooth generating circuits. STANDARD TELEPHONES & CABLES, Ltd. March 14, 1947, No. 7144. Convention date, March 20, 1946. [Class 40 (vi)] In a magnetic deflection circuit a pick-up coil associated with the deflecting coils applies a voltage to the deflecting current supplying means, the voltage being of the same polarity with respect to earth irrespective of the direction of the current flow in the pick-up coil and in this way both linearises the scanning stroke and reduces the flyback period. The Figure shows a sawtooth generator 1 associated with the deflecting coils 10 across which the damping valve 11 is connected to suppress undesired H.F. oscillation. Pick-up coil 14 is tightly coupled to the deflecting coil and feeds back a linearising voltage via rectifiers 15 to the control grid of the generator valve. At the end of the forward stroke of the sawtooth wave a negativegoing synchronizing pulse applied to lead 23 causes the anode current of valve 1 to be reduced, thus initiating the flyback period. The duration of this period is reduced by the negative pulse which is applied to the grid of valve 1 from the pick-up coil, the pulse being produced by the reduction of current flow in the deflecting coil 10. The amplitude of the sawtooth current generated by valve 1 may be controlled by adjusting the screen grid resistor 9. Specification 622,317 is referred to.
Patent GB-630306-A (GB)
Title: Improvements in copying milling machines
IPC: B23Q35/18
Filed: 1946-03-07
Abstract: 630,306. Lock nuts. TURCHAN, M., and WALKER, C. March 7, 1946, No. 7218. Convention date, Dec. 6, 1939. Drawings to Specification. [Class 89 (i)] [Also in Group XXII] Screwed plugs split laterally so that they may be spread by a set screw as in Specification 630,426 are described.
Patent GB-287709-A (GB)
Title: A table bed
IPC: A47C17/62
Filed: 1927-03-16
Abstract: 287,709. Paton, D. March 16, 1927. Bedsteads.-A table is inverted and is converted into a bedstead. For this purpose each leg is pro. vided with a hinged flush catch B, set in a slot or mortice A so that when the table is inverted, the catches drop into position to receive the poles of a hammock-like bed. The table top is fitted with studs R to prevent the floor from damaging the top. In a modification, a stand similar to an inverted table, without a table top, is fitted with the parts B. The bed consists of a. sheet J, Fig. 4, of sack-cloth or the like with tubular side hems K, through which the poles I are passed. Metal ferrules M, Fig. 6, which pass over the poles, have slotted lugs N which are hung on the catches B.
Patent GB-1062384-A (GB)
Title: A method and a device for manufacturing tobacco sheet material
IPC: A24B15/12
Filed: 1966-02-18
Abstract: 1,062,384. Reconstituted tobacco. ARENCO A.B. Feb. 18, 1966 [May 21, 1965], No. 7296/66. Heading A2C. Tobacco paste from a container 1 is cast by rollers 2, 3 and a wiper 6 on to an endless metallic belt 4 on which a thin layer of lecithin, or a solution thereof, has been coated. The belt is preferably of stainless steel and may be coated with the lecithin by spraying from a nozzle 7 or by a rotary brush. The cast tobacco sheet 8 is preferably dried at a temperature of 40-90‹C. The lecithin is preferably dissolved in a solvent such as trichlorethylene or liquid paraffin.
Patent GB-592250-A (GB)
Title: Improvements in or relating to liquid circulating systems
IPC: F15B21/04
Filed: 1945-03-22
Abstract: 592,250. Reciprocating pumps; injectors. BENDIX AVIATION CORPORATION. March 22, 1945, No. 7297. Convention date, March 21, 1944. [Classes 71 and 102 (i)] [Also in Group XXIX] In a hydraulic system comprising a pump 7 supplying liquid from a source 6 to a device 4 such as an automatic pilot, leakage from the device drains to a tank 1 through a conduit 2 and is returned from the tank to source 6 by the exhausted pressure liquid from the device passing through a venturi 12 having a suction pipe 22 depending into a tank. The lower end of the suction pipe is closed by a valve which is opened by a float 32 when the liquid level rises in the tank.
Patent GB-1095135-A (GB)
Title: A magnetic recording process
Inventor: GREINER JOACHIM
IPC: G03G5/16
Filed: 1965-02-19
Abstract: 1,095,135. Recording and playback. AGFA A.G. Feb. 19, 1965 [Feb. 29, 1964], No. 7329/65. Heading G5K. In a process for magnetic recording, a magnetizable recording member is heated to above its Curie point and subjected while at that temperature to the magnetic field of the signal to be recorded. It is then cooled while still under the influence of this field. The process is especially suitable for copying, where the signal to be recorded is carried on a second recording member whose Curie point is considerably greater than that of the magnetizable member and which may be a normal Fe 2 O 3  magnetizable layer on polyester tape. The magnetizable compound used on the member may be chromium dioxide which may be modified by the addition of other substances, or may be a ferromagnetic alloy of iron nickel or cobalt. It should have a Curie point between 50‹ and 220‹ C.
Patent GB-291895-A (GB)
Title: Improvements in or relating to weighing instruments
IPC: G01G5/02
Filed: 1927-03-16
Abstract: 291,895. Murray, T. S. March 16, 1927. Hydrostatic apparatus. - A balance for indicating weights by the depth of immersion of a calibrated floating rod or cylinder on the top of which the article to be weighed is supported, is provided with a floating ring through which the rod passes loosely and of which the upper edge forms the index for reading the weight calibrations. The graduated rod or cylinder 5 floats in mercury or other suitable liquid within a transparent vessel 2 and a floating ring 8 with a bevelled edge 8<a> encircles the rod 5 and indicates the weight against the calibrations 5<b>. Radial rods 5<c> and a cover 7 keep the rod 5 vertical. During transport of the balance, the end of the calibrated rod is screwed into the base 3 and a conical portion 5<d> closes the central hole in the cover to prevent escape of liquid.
Patent GB-181123-A (GB)
Title: Improvements relating to vacuum filtration of colloidal matter from liquid mixtures
IPC: B01D29/00
Filed: 1921-03-08
Abstract: 181,123. Mauss, W. March 8, 1921. Jet nozzles. - A nozzle, used to direct jets of water against filter elements to remove deposit from the elements, comprises a pipe 11 with perforations 12 which discharge into spaces 13 between the pipe and a crown strip 14, attached to the pipe by screws 15. The edges 17 of the strip are thinned down to seat on machined surfaces 18 on the exterior of the pipe. The pressure of the water slightly raises the edges 17, allowing the water to escape as a thin sheet.
Patent GB-925134-A (GB)
Title: Improvements in and relating to double-walled storage containers
IPC: B65D90/503
Filed: 1962-02-27
Abstract: 925,134. Tanks. A. ALBANO-MULLER, and E. VITS, [trading as GRUNDSTUCKSVERWALTUNGSGESELLSCHAFT MULLER & CO. KOMM.-GES.]. Feb. 27, 1962 [March 4, 1961], No. 7575/62. Class 69 (1). A double-walled tank has its inner 1a and outer 2a shells in close contact at its ends and the middle section 26 of its outer shell attached to the external periphery of its outer end shells 2a, for example by welding. The middle section of the outer shell may be built up of sections butt-jointed, the joints being protected by internal strips 3. The outer shell may have a channel (not shown) to accommodate a leakage-detection device or pipes 6, 7 may be provided for the purpose with a drain well at 6a.
Patent GB-996570-A (GB)
Title: Purification of bipyridyls
Inventor: FANSHAWE RALPH SANTORRE
IPC: C07D213/22
Filed: 1962-02-27
Abstract: Bipyridyls are purified by contacting an impure bipyridyl with water and a substantially water-immiscible organic solvent and thereafter separating the organic solvent phase which contains the dipyridyl. Preferably the bipyridyl is dissolved in either the water or the organic solvent before they are contacted with each other.  The aqueous phase is preferably maintained at a pH in the range 4 to 8, for example by means of a buffer, e.g. sodium formate/formic acid. Suitable organic solvents are, for example, benzene, toluene, xylenes, trimethyl benzenes, petroleum spirit, chlorinated hydrocarbons and mixtures thereof.  The process may be carried out batchwise or continuously preferably at a temperature of 40-80 DEG C.  The purified bipyridyls may be separated from the organic solvent by evaporation, distillation or by the formation of bipyridyl salts which may be filtered from the solution. Specification 996,569 is referred to.