baber/WOPTO huggingface dataset:
Patent GB-1039921-A (GB)
Title: Process for preparing polycarbonates
Inventor: CONIX ANDRE JAN
IPC: C08G64/06
Filed: 1961-08-29
Abstract: Polycarbonates are made by reacting a dihalegenoformate of a dihydric phenol with an alkali metal hydroxide in aqueous solution. Copolycarbonates may be formed by including a dihalegenoformate of an aliphatic or cycloaliphatic dihydroxy compound in the reaction mixture.  The reaction is preferably effected by adding an aqueous solution of alkali metal hydroxide to a solution of the dihalogenoformate (e.g. in methylene chloride).  Catalysts for the reaction are quarternary ammonium, quarternary phosphonium, quarternary arsonium and tertiary sulphonium compounds.  At the end of the reaction, the polymer solution may be united with water and then poured into ethanol or hot water to precipitate the polycarbonate. Examples describe the production of polycarbonates from the bischloroformates of (1)-(6) bis - phenol A; (7) p - (dihydroxymethyl) cyclohexane and bis-phenol A; (8) bisphenol A and ethylene glycol; (9) bis-phenol A and bis - (4 - hydroxy - 3,5 - dichlorophenyl) propane; (10) bis-phenol A and hydroquinone; (11)-(13) mixed isomers of bis-(hydroxyphenyl) methane.
Patent GB-136569-A (GB)
Title: Process for Treating Vegetable Fibres.
IPC: D01C1/02
Filed: 1919-12-12
Abstract: 136,569. Gillet et Fils, (Assignees of Schwartz, C.). Dec. 13, 1918, [Convention date]. Inkless printing by chemical reaction; resist printing.-Fabrics composed of vegetable fibres in the raw state, or bleached. or mercerized, are treated to impart to them the character of wool by steeping them at ordinary temperatures and for a period not exceeding thirty minutes in nitric acid, preferably at a concentration of not less than 65 per cent, and then squeezing and washing the fibres. Print effects may be produced either by direct means or by the use of reserves. Specifications 136,568 and 144,204 are referred to.
Patent GB-1073019-A (GB)
Title: Actuator cap construction for aerosol dispensing containers
IPC: B65D83/14
Filed: 1964-08-04
Abstract: 1,073,019. Pressurized dispensing containers. VALVE CORPORATION OF AMERICA. Aug. 4, 1964 [Aug. 20, 1963], No. 31282/64. Heading F1R. A plastics actuator cap for an aerosol dispensing container comprises a cylindrical wall 18 and an actuator button 25, moulded with frangible connecting webs 40. When the button 25 is depressed to actuate the container valve the webs 40 are broken and act as guides for the button. In a further embodiment axially extending guides are moulded on one or other of the confronting surfaces of wall 18 and button 25. The webs 40 may join the uppermost edges of the wall and button.
Patent GB-1277734-A (GB)
Title: Manufacture of bipyridylium salts
Inventor: COLCHESTER JOHN EDWARD
IPC: C07D213/22
Filed: 1968-07-01
Abstract: 1277734 Bipyridylium salts IMPERIAL CHEMICAL INDUSTRIES Ltd 10 June 1969 [1 July 1968] 31366/68 Heading C2C 1,1<SP>1</SP> Di-substituted-4,4<SP>1</SP>-bipyridylium salts are produced by reacting an N-substituted-4- cyano pyridinium salt with ammonia or an alkali metal hydroxide and subsequently oxidizing the resulting interaction product. Preferred pyridinium salts are those having an alkyl or carbamidoalkyl substituent on the nitrogen atom and suitable salts are the halides. The pyridine nucleus may be substituted in the 2-, 3-, 5- or 6-position by alkyl groups. The reaction between the 4-cyano-pyridinium salt and the ammonia or alkali metal hydroxide is preferably carried out in a solvent, especially water, at a temperature in the range 0-150 C. and results in the liberation of cyanide ions. The interaction product is oxidized e.g. by ceric sulphate in the presence of sulphuric acid, metal halides, inorganic oxyacid anhydrides, chlorine or air preferably in conjunction with water and/or carbon dioxide and/or an acid; or an organic oxidizing agent e.g. a quinone. The salt may be separated from the reaction mixture by treatment with amsonic acid (4,4<SP>1</SP>-diamino-stilbene- 2,2<SP>1</SP>-disulphonic acid) and the amsonate converted to other salts by treatment with other acids e.g. hydrochloric, phosphonic sulphuric or acetic acid.
Patent GB-989766-A (GB)
Title: Improvements in or relating to co-axial cables
IPC: H01B11/18
Filed: 1963-08-08
Abstract: 989,766. Coaxial cables. TELLITE CORPORATION. Aug. 8, 1963 [Sept. 18, 1962], No. 31402/63. Heading H1A. A coaxial cable has an outer conductor 11 separated from an inner conductor 10 by a helical coil 12 of dielectric material substantially completely filling the space between the two conductors. During manufacture, after selection of the inner and outer conductors, a tube of polythene is formed by a conventional extrussion process, its external diameter being slightly smaller than the internal diameter of the outer conductor. The polythene is irradiated to change it to a thermoset material and by means of e.g. a screw-cutting lathe the tube wall is completely cut through along a helical path. The central conductor is then inserted and the whole is then fed into the outer conductor. The assembled cable then passes through a die which draws down the outer tube and forces the adjacent turns into abutting contact. Next, the cable is heated to, say, 120‹ F. and the helical coil which protrudes as a result beyond the tube is cut off. As the cable cools, minute spaces are formed between the convolutions. The effect of these spaces is to stabilize the phase angle of the cable with respect to temperature.
Patent GB-650443-A (GB)
Title: Improvements in or relating to high frequency electron discharge tube structures
IPC: H01J25/12
Filed: 1941-07-02
Abstract: 650,443. Electric resonators. ROLLINSON, E. W. (Leland Stanford Junior University, Board of Trustees of). July 2, 1941, No. .31408/48. Divided out of 650,420. [A Specification was laid open to inspection under Sect. 91 of the Acts, Jan. 3, 1942.] [Class 40 (viii)] The resonators 103, 104 of a velocity-modulated tube are tuned externally by connecting them by transmission lines 122, 123 to variable impedances such as tunable resonators 120, 121. The tuning means may be a ring 125 or a plate 126 turned by knobs 127, 127<SP>1</SP>. The tube is the one described in Specification 650,421, [Group XL (a)], and individual or gang tuning mechanisms may be additionally applied to the resonators as in Specification 650,420. The Specification as open to inspection under Sect. 91 states that the transmission line may be of variable length and terminated by a fixed impedance differing from its characteristic impedance. This subject-matter does not appear in the Specification as accepted.
Patent GB-787151-A (GB)
Title: Machine sewing apparatus
Inventor: LUNDGREN YNGVE
IPC: D05B23/00
Filed: 1955-11-03
Abstract: 787,151. Sewing machines. AKTIEBOLAGET HOGANASMETODER. Nov. 3, 1955, No. 31422/55. Class 112 Sewing padded work. In apparatus for sewing continuously-fed felt, or a mat of mineral fibres, by an axially-reciprocating needle, further movement imparted to the needle, while in the work, is in the direction of work feed, and the needle remains at all times at right angles to the plane of movement of the work. As shown, the apparatus secures upper and lower layers of paper 12, 13 to a mat 11 of glass fibre by means of chain stitching. Stitch forming, connecting upper and lower shafts, feeding. A crank 2, fixed to a shaft 1, is connected by a link 3 to a needle bar 4 slidably mounted in a laterally-displaceable sleeve 26, the needle 6 cooperating with a rotary looper 8. Shaft 1 and the looper shaft are interconnected by a chain 9. A driving shaft 22 is connected by a chain 24 to the looper shaft, and by a chain 23 to a work-feeding roller 19 which co-operates with a feed roller, 21. Rods 27, 28 fixed to sleeve 26 and coupled together at their farther ends by a bar 29, are slidably mounted in a frame 38, a rotary cam 32 driven by chain 9 co-operating with a roller 31 on bar 29 to move sleeve 26 later. ally against the returning bias of springs 34, 36. In a multi-needle machine the needledriving cranks 2 are fixed at equal angular distances apart to a common shaft 1.
Patent GB-208874-A (GB)
Title: Improvements in or relating to seats, saddles, or the like suitable as the saddles or seats for cycles, motor cycles, cars, and the like
IPC: B62J1/02
Filed: 1922-11-17
Abstract: 208,874. Terry, A. V. Nov. 17, 1922. Saddles; spring surfaces.-A hammock type of saddle or seat for cycles, motor-cycles, cars, &c., comprises a rigid frame formed of a bow-shaped strip a and a substantially straight front strip b, springs d radiating from a floating plate c to the strip a, and further springs d<2> connecting the plate c to the peak b<1>. The frame a, b is supported by springs e upon an underframe formed of transverse members f<1>, f<2> and a central longitudinal member f<2>. The pea.k portion b<1> may be braced by a strip b<2>.
Patent GB-520756-A (GB)
Title: Transmitting and receiving system for multiplex telephony or such like
IPC: H04J1/12
Filed: 1938-10-31
Abstract: 520,756. Multiplex wireless signalling. STANDARD TELEPHONES & CABLES, Ltd. (Nederlanden Staat Der.) Oct. 31, 1938, No. 31444. [A Specification was laid open to inspection under Sect. 91 of the Acts, May 1, 1939.] Drawings to Specification. [Class 40 (v)] The signal channels are spaced apart by using carriers which are multiples of a fundamental frequency slightly higher than the highest frequency in the primary channels. Each signal channel first modulates an intermediate carrier of common frequency which is higher than half the highest frequency to be transmitted through the signalling medium. In an example, 28 channels each of 0-3 KC., each modulate an intermediate carrier of 60 KC., the resulting upper sideband modulating a final carrier of 60 + 40x KC. where x is an integer ranging from 1 to 28.
Patent GB-786745-A (GB)
Title: Metallisable disazo dyestuffs
Inventor: LEGG NORMAN
IPC: C09B45/00
Filed: 1954-11-01
Abstract: 3 - Amino - 4 - hydroxybenzanilide sulphuric acid esters are made from the corresponding hydroxynitrobenzanilides by sulphation and subsequent reduction of the nitro group.  In examples the sulphuric acid ester of 3-amino-4-hydroxybenzanilide is made and its 21-chloro-, 31-methyl- and 41-methoxy-derivatives.  The products are dyestuff intermediates vide Group IV (c).ALSO:The invention comprises dyestuffs of formula <FORM:0786745/IV (b)/1> where R is a phenyl residue which may be substituted and D is the residue of a coupling component which contains two coupling positions adjacent to metallizable groups and which is devoid to SO3H and COOH groups, the -N=N- groups being attached to the said coupling positions.  They may be made by coupling 2 mols. of a diazo compound of an appropriate amine in alkaline solution with the required coupling component. Diazo components specified are 3-amino-4-hydroxy-, 3-amino - 4,41 - dihydroxy - 31 - carboxy- and 3-amino-21-, -31- and -41-methyl-, -chloro- and -methoxy-benzanilide sulphuric acid esters.  Specified coupling components are 4,41-bisacetoacetylamino - 2,21 - dichloro-, -3,31 - di - di - methyl-, -dichloro- and -dimethoxy-diphenyls, 4,41 - bis - acetoacetyl amino - 6,61 - dichloro - 3,31 - dimethoxydiphenyl and 4,41 - bis - acetoacetylamino diphenyl, 4,41 - bis - acetoacetylamino - stilbene, 1,4-, 1,5-, 1,6-, 2,6- and 2,7-bis - acetoacetylamino - naphthalenes, 4,41-bis-(31 - methylpyrazol - 511 - one - 111 - yl) - di - phenyl and -3,31 - dimethoxydiphenyl, 4,41-bis - (611 - hydroxy - 211 - naphthoyl) - 3,31 - di - methoxydiphenyl, 5,6 - dihydroxy- and -diamino - indazoles and 4,41 - bis - (acetoacetylamino) - diphenylurea and -benzanilide.  The dyestuffs dye cellulosic fibres by an aftercoppering process.  Nylon and wool may also be dyed and after-treatments with salts such as nickel sulphate, chromium acetate and cobalt chloride may be effected.  Examples are provided of the preparation of the dyestuffs from certain of the above specified components and their use in dyeing cotton in yellow and blue shades by after-coppering processes. In the Provisional Specification R is an aryl residue.  Specification 478,872 is referred to.
Patent GB-470734-A (GB)
Title: Method of making articles of aluminium alloys with electrolytic oxide coatings
IPC: C25D11/04
Filed: 1936-11-17
Abstract: An article made of an aluminium alloy containing 3-15 per cent of magnesium and zinc in proportions corresponding approximately to the compound MgZn2-e.g. 1,6 per cent of magnesium and 6,4 per cent of zinc-is subjected to anodic treatment.  The alloy may contain small quantities of one or more of the metals titanium, nickel, manganese, and cerium, examples containing specified proportions of these metals and also of silicon and iron being described.
Patent GB-371798-A (GB)
Title: Improvements in and relating to gaskets
IPC: F16J15/12
Filed: 1930-10-21
Abstract: 371,798. Joint-making packing. CRANE PACKING CO., 1800, Cuyler Avenue, Chicago, U.S.A.-(Assignees of Cody, M. M. ; 1800, Cuyler Avenue, Chicago, U.S.A.) Oct. 21, 1930, No. 31599. Convention date, Oct. 21, 1929. Void [Published under Sect. 91 of the Acts]. [Class 122 (iii).] A flexible gasket comprises a pair of cores 10 of compressible material, spaced apart and enclosed in a helical wrapping of soft flexible material 12, e.g. paper, aluminium or lead foil. The cores, which may be of fibrous material, braided cords, soft metal wire, &c. may be impregnated with a sealing compound such as shellac, asphaltum or rubber cement, which permits compression of the material. After wrapping, the foil is compressed between the cores to form a flange of sufficient width to accommodate fastening means. The cores may be of similar or different materials.
Patent GB-537610-A (GB)
Title: Improved composition and process for lining metal and other containers
IPC: C09D191/06
Filed: 1939-12-07
Abstract: 537,610. Wax compositions. CROWN CORK & SEAL CO., Inc Dec. 7, 1939, No. 31739. Convention date, Dec. 17, 1938. [Class 91] A wax composition for lining the interior of containers comprises in addition to a basic wax, 0À7 to 2À0 per cent. of a high melting amorphous vegetable or mineral wax having a melting point between 221‹ and 226‹F., an acid value between 10 to 15 and an ester value between 110 and 125. The basic wax may be petroleum wax or waxes produced therefrom by pressing or solvent extraction, bleached beeswax or ozokerite. A high melting amorphous wax may be treated by hydrogenation or extraction so as to give a wax having the stated characteristics. The wax composition may be impregnated with the aroma or flavour of the liquid for which the 'containers are intended to be used. Thus in an example, the wax composition is melted and a fabric bag of hops is lowered into the melt. When the wax has absorbed a sufficient quantity of the hop extract it is suitable for lining cans intended for beer. Alternatively oil of hops or lupulin may be added for the same purpose, or cans already treated with wax may be exposed to an atmosphere laden with hop aroma. Containers for grape juice, or citrus juices may be similarly coated with wax which has been treated with the appropriate flavour or aroma imparting substance.
Patent GB-230916-A (GB)
Title: An improved method for the extraction of aluminium materials
IPC: C01F7/743
Filed: 1923-12-19
Abstract: Aluminous materials such as shales, fireclay, blaes and the like which do not disintegrate during leaching are broken up to pass a sieve of 36 to 64 square meshes per square inch and a large proportion of fines, i.e. 40-50 per cent passing a sieve having 20 meshes per linear inch, and are then leached on a false bottom in a leaching vessel without separating the fines.  The solution obtained is submitted to a settling process at a concentration of 55-65 DEG Tw., and the clear liquid is then concentrated and crystallized.  The false bottom is preferably placed as high as possible in the leaching vessel, for instance so as to have 2-3 feet depth of liquid below it and a few inches of liquid above it, so as to avoid choking the outlet pipe.  Any kind of leaching process may be employed, for instance a single quantity of acid may be used or successive quantities of acid, or a counter-current process in which a fresh charge is first treated with nearly neutralized liquor and the nearly exhausted charge with fresh acid.
Patent GB-1042474-A (GB)
Title: Dibenzocycloheptenes
IPC: C07C35/22
Filed: 1963-06-05
Abstract: The invention comprises compounds of the formula <FORM:1042474/C2/1> in which the dotted line indicates that the compounds are saturated or unsaturated at the indicated position, each of X and X1 is a hydrogen, fluorine, chlorine, bromine or iodine atom, or a C1- 6 alkyl, C2- 6 alkenyl, C1- 4 perfluoroalkyl, phenyl, substituted phenyl, C1- 4 acyl, C1- 4 perfluoroacyl, C1- 4 alkylamino, C2- 8 dialkylamino, C1- 4 acylamino, C1- 4 perfluoroacylamino, C1- 4 alkylsulphonylamino, hydroxy, C1- 4 alkoxy, C1- 4 perfluoroalkoxy, cyano carboxy, carbamoyl, C2- 5 alkylcarbamoyl, C3- 9 dialkylcarbamoyl, C2- 6 carboalkoxy, mercapto, C1- 4 alkylmercapto, C1- 4 perfluoroalkylmercapto, C1- 4 alkylsulphonyl, C1- 4 perfluoroalkylsulphonyl, sulphamoyl, C1- 4 alkylsulphamoyl, or C2- 8 dialkylsulphamoyl group; and more than one substituent may be present on each benzene ring; Y is a hydrogen or halogen atom; and Z1 is a trimethylene or alkyl-substituted trimethylene radical; and a process for their preparation comprising adding HBr by a peroxide-catalysed addition reaction to a compound of the formula <FORM:1042474/C2/2> in which Z is an allyl or alkyl-substituted allyl radical.
Patent GB-920338-A (GB)
Title: Digital converters
Inventor: MULLINS BRIAN PERCIVAL
IPC: G06K21/04
Filed: 1959-09-18
Abstract: 920,338. Coding devices. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Nov. 23, 1960 [Sept. 18, 1959], No. 31840/59. Class 146 (2). [Also in Group XXXVIII] A device for decoding numbers in binary code comprises one or more base sheets 6, each bearing the decimal numbers corresponding to one combination of the four more significant digits and a pack of blanks 7a-7f having a pattern of opaque portions and transparent parts such as holes 9. The sheets and blanks are relatively slidable and may be illuminated from below by a lamp 10 or other means. As shown, plungers 4 bear indication of the sixteen combinations of the four more significate digits and the appropriate sheet is selected by sliding the plunger 4, a peg 4a of which engaging a hole 4b and moves the selected sheet so that its decimal numbers can be viewed through holes 6a in the other sheets. Plungers 5 are similarly moved to position the blanks 7a-7f in their 0 or 1 positions according to the less significate digits. These movements align holes 9 to display the decimal number corresponding to be binary code set in one of the apertures 2 of a mask 1. In holes 3a, 3b, the more or less significate digits of the binary number set are also displayed. The plungers 4, 5 may be set by solenoids operated from a keyboard or by incoming digital signals.
Patent GB-822864-A (GB)
Title: Heat transfer liquids, lubricants and hydraulic fluids
IPC: C08G77/18
Filed: 1957-10-11
Abstract: A liquid mixture suitable for use as a heat transfer composition, a lubricant or a hydraulic fluid consists of at least 50 mol. per cent of xenyl triphenoxy silane and the remainder a normally solid aryloxy silane of the formula (R1)y-Si-(OR)x where R and R1 are aryl groups or aralkyl groups of the formula -(CH2)n-R11 where n is 1 or 2, R11 is an aryl group, x is 1 to 4, y is 0 to 3, and the sum of x and y is 4.  The liquid xenyl triphenoxy silane may be mixed with the solid aryloxy silane and heated at above 300 DEG  C., or a mixture of xenyl trichlorosilane and the chlorosilane corresponding with the desired aryloxy silane may be reacted with a phenol or alcohol having the aryl group to be introduced into the components of the mixture.  In examples, compositions are obtained consisting of xenyl triphenoxy silane mixed with tetraphenoxy silane and with phenyl triphenoxy silane.  Other silanes mentioned are triphenyl phenoxy silane, diphenyl diphenoxy silane, and compounds containing cresyl, tolyl, naphthyl, benzyl and menthyl groups.  Specification 806,415, [Group IV (a)], is referred to.
Patent GB-192042-A (GB)
Title: Improvements in or relating to spoons
IPC: A47G21/04
Filed: 1922-11-22
Abstract: 192,042. Kleen Products Co., Inc., (Assignees of Bothe, A.). Jan. 17, 1922, [Convention date]. Spoons. - A fibre spoon is formed with a central corrugation 1 starting from a point 2 midway of the length of the bowl and expanding sideways as at 4 along the length of the bowl and extending as at 5 along the handle and vanishing in an arcuate form as at 6. Coextensive with the corrugation is a flat border flange 7. The bowl 3 of the spoon is offset with respect to the handle, as shown.
Patent GB-741060-A (GB)
Title: Improvements in electric motor control systems
Inventor: PECK PHILIP ELWORTHY
IPC: H02P5/68
Filed: 1952-12-17
Abstract: 741,060. Control of several motors: BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 15, 1953 [Dec. 17, 1952], No. 31997/52. Class 38(3) A pair of motors M1, M2, for driving the upper and lower rollers of a steel rolling mill nave their armatures connected in series circuit with the armatures of generators G1, G2, G3, the armature of generator G3 . being connected between those of the motors. A pair of auxiliary generators CG1, CG2, have their armatures connected in series with one another and in shunt with the generator G3. Points PI, P2, which normally are at equal potential, are joined by a connection C. If the voltages generated by the auxiliary generators are equal, the circuit remains balanced and the current taken by the motors remains the same. By controlling the auxiliary generators differentially, the currents taken by the motors are caused to differ. In a modification, Fig. 2 (not shown), involving a pair of motors with four generators connected symmetrically in pairs between the motors, a switching arrangement allows the auxiliary generators to be connected in turn across one of the main generators, and another of the main generators to be selectively removed from circuit by means of a short-circuit connection. The field excitation of the auxiliary generators may be controlled to maintain equal voltages, the motor field excitation being regulated to provide equal loading. Alternatively, the auxiliary generator field excitation may be arranged to provide the desired speed matching by voltage control when the motors are lightly loaded, and an overriding load-balance control when metal is in the mill.
Patent GB-1016695-A (GB)
Title: Improvements in and relating to vehicle lifts
Inventor: POWELL VERNON
IPC: B66F7/04
Filed: 1961-09-06
Abstract: 1,016,695. Garage lifts. JOSEPH BRADBURY & SONS Ltd. Aug. 24, 1962 [Sept. 6, 1961], No. 31999/61. Heading B8H. A vehicle lift comprises a platform 1 provided with a central opening 3 and guided for vertical movement on hollow posts 4, 4a, 4b, 4c and supporting an adjustable frame 30, 31 which can be locked to the posts so that, having raised a vehicle on the platform 1 and locked the frame 30, 31 to the posts, the vehicle will be supported with, its wheels free by the frame 30, 31 when the platform 1 is subsequently lowered. The frame members 31 are provided with rollers 32, Fig. 6, running on rails 34 on the platform 1 and are connected to the members 30 by rollers 53 which engage beneath a flange on the members 30. At each end, each member 30 is provided with a pawl which is engageable, under the action of a hand lever 39, with a rack secured to the adjacent guide post. The platform 1 is raised by an hydraulic ram mounted in the post 4 and comprising a piston 6 secured to a base-plate 7 and a cylinder 8 provided with a flange 17 supporting a fork 16 which extends through a slot in the post 4 and is secured to a comer of the platform. The pawls associated with the posts 4a, 4b when fully extended or fully retracted close normallyopen switches in the circuits of a solenoid 60, Fig. 8, which is thereby energized and prevents collapse of a linkage between an operating lever 56 and an hydraulic control valve 12 of the ram so that actuation of the valve 12 is prevented unless both pawls are fully extended or retracted.