baber/WOPTO huggingface dataset:
Patent GB-970772-A (GB)
Title: Tyre bead reinforcing structure
IPC: B60C15/06
Filed: 1960-12-30
Abstract: 970,772. Pneumatic tyre beads. PNEUMATIQUES CAOUTCHOUC MANUFACTURE & PLASTIQUES KLEBER COLOMBES. Dec. 30, 1960 [Dec. 31, 1959], No. 44825/60. Heading B7C. A tyre bead reinforcement comprises, in addition to the wire core 12, apex strip 13 and flipper 14, one or more strips 15, 16 of crosswoven or parallel-cord fabric folded lengthwise and extending circumferentially with the fold 15a or 16a disposed radially outwardly of the wire core 12 and of the free ends 15b, 15c or 16b, 16c of the strip, such ends being disposed adjacent the wire core. The two portions of the or each folded strip may be disposed on the same side of the wire core, as in Figs. 1 and 2 or on opposite sides of the wire core as for the nested folded strips 37, 38 shown in Fig. 4.
Patent GB-449691-A (GB)
Abstract: 449,691. Ignition systems. CHATFIELD, A. R., c/o Arc Motors, Seal Road, Sevenoaks, Kent. Jan. 1, 1935, No. 94. [Class 7 (iv)] A spark-gap 23, 24 is placed in shunt in the high-tension circuit between the coil and distributer. The gap comes into operation as a byepass for superfluous energy above that required for operating the spark plugs. Insulating members 32 33 receive screwed metal bushes 30 which clamp the ends of the conductor 19 against insulating caps 34 and receive an exposed conducting and connecting rod 36. Transparent tubes 38 adjoin the members 32, 33 and are spaced apart by a ring 40 of con. ducting material in which is mounted an earthing lead 41, the end of which is separated by a gap from the conductor 36, and a clip 52 supporting and forming one terminal of a condenser 53. The other terminal of the condenser is connected by a lead 27 which is carried by fibre clips 55 parallel to the high-tension lead 19 to the input terminal 12 of the coil primary winding. The ring 40 may also be fitted with a supporting bar 43 having a universal mounting on some engine part. A neon tube may also be connected to the conductor 36. Specification 186,918, [Class 7 (iv)], is referred to.
Patent GB-1364733-A (GB)
Title: Tractors
IPC: A01C23/02
Filed: 1972-09-19
Abstract: 1364733 Fertilising and sowing J W CHAFER Ltd 19 Sept 1972 [28 Sept 1971] 45059/71 Heading AID A tractor carrying or towing a planter 5 has a front-mounted tank 3 adapted to counterbalance the planter and containing liquid fertiliser which is pumped by a pump 7, beltdriven from a land-wheel 9 of the planter, through pipes 6, 10 and out of tines 11 into furrows opened by members 12 to receive root crops, bulbs or seeds fed from the hopper 14 by conveyors 15. Shores 16 cover the seeds.
Patent GB-1267327-A (GB)
Title: Gas discharge display device
IPC: H01J17/49
Filed: 1970-09-23
Abstract: 1,267,327. Discharge lamps. NATIONAL CASH REGISTER CO. 23 Sept., 1970 [2 Oct., 1969], No. 45243/70. Heading HID. A gas discharge display device comprises juxtapositioned plates 21, 22, at least one of which contains a plurality of recesses filled with an ionizable gas, a first electrode 32 on the outside of one plate 21, a plurality of electrodes (40a . . . 40g), Fig. 2 (not shown), on the outside of the other plate and means for applying alternating potential to the first electrode and selected electrodes 40. Co-operating recesses in each plate form cells arranged in six groups each in the form of a figure of eight. A gold, tin or Cd oxide electrode overlies each cell and electrodes 32 ... 37 overlie each group. The cells are interconnected by an array of minute passages 29 on the inside surface of plate 22 and filled with Ne containing 0À1% A and 0À2% N at 100 mm.Hg. In other embodiments the recesses are in one plate only or a matrix of cells is formed by crossing sets of channels, one set in each plate and each electrode (40a . . . 45g) overlays a number of cells.
Patent GB-1476746-A (GB)
Title: Method of manufacturing a nematic liquid crystal device of the homeotropically aligned type
IPC: G02F1/1337
Filed: 1974-10-18
Abstract: 1476746 Controlling light THOMSONCSF 18 Oct 1974 [19 Oct 1973] 45300/74 Heading G2F  In a dynamic scattering nematic liquid crystal device, opposed electrodes are each covered with a layer of a polymer produced by subjecting an organic vapour to a low-pressure electrical discharge while the electrode surfaces are substantially at 90 degrees to the field, whereby the polymer chains extend normally to the electrode surfaces and induce homotropic alignment in the nematic material with which they are in contact. As particularly described, the organic vapour may be hexamethyldisiloxane, vinyltrimethylsilane or, 1, 7 dicyano-heptane and the nematic material may be 4-methoxybenzylidene-4'-butylaniline, or a benzoic ester or tolane. The electric discharge may be 1000 V D.C. or one at radio frequency e.g. 13.56MHz. The latter is preferred for production of layers thicker than 2000  or when the electrode surfaces include insulating and conducting areas.
Patent GB-1199668-A (GB)
Title: Ion-Exchange Membranes
Inventor: BOURAT GUY
IPC: C08J5/22
Filed: 1968-09-24
Abstract: 1,199,668. Ion - exchange membranes. RHONE-POULENC S.A. 24 Sept., 1968 [25 Sept., 1967], No. 45369/68. Headings C3G and C3P. [Also in Divisions D1-D2] An ion-exchange membrane is formed of a vinyl chloride polymer or copolymer grafted with an aromatic vinyl monomer comprising an intranuclear or juxtanuclear tertiary nitrogen atom, or of a mixture of a vinyl chloride polymer or copolymer and a polymer of an aromatic vinyl monomer comprising an intranuclear or juxtanuclear tertiary nitrogen atom, all or part of the said tertiary nitrogen atoms having been quaternized by an alkylene or alkenylene dihalide or bis-(haloalkyl)-benzene. Specified aromatic vinyl monomers are vinyl pyridines and N,N-dialkylaminostyrenes. The polymer may be partially quaternized with the dihalide and the quaternization completed using a monofunctional quaternizing agent, e.g. an alkyl, cycloalkyl or aralkyl halide or sulphate. In the examples, (1) polyvinyl chloride is grafted with 4-vinylpyridine, the resulting graft polymer being quaternized with p-dodecylbenzyl chloride and bis - 1,4 - (chloromethyl) - benzene then treated with methyl iodide, (2) a membrane is formed as in Example 1, except that no dodecylbenzyl chloride is used, (3) a polyethylene glycol terephthalate fabric is soaked in a solution of the graft copolymer obtained in Example 1 and the supported film obtained is quaternized as in Example 1, (4) a solution of polyvinyl chloride and p-dimethylamino-styrene in cyclohexanone is poured on to glass, dried and then quaternized as in Example 2, (5) and (7) polyvinyl chloride and poly-p-dimethylaminostyrene are dissolved in cyclohexanone and a film formed from the solution is quaternized as in Example 2 and (6) a membrane reinforced with fabric is formed as in Example 3, using the solution of polymers prepared in Example 5.
Patent GB-457476-A (GB)
IPC: G03B33/00
Abstract: 457,476. Colour photography and kinematography; photographic projectioncopying apparatus. NESPOR, P., 13, Luftbadgasse, Vienna. May 29, 1935, No. 15657. Convention date, May 29, 1934. [Classes 98 (i) and 98 (ii)] In a process for the reproduction of colour photographs or kinematographic films in which three or more component pictures belonging to one colour picture or picture group are copied by projection copying, the original and the copy are disposed on one common carrier during the copying process. The original and copy may be attached to the carrier by adhesion. As shown in Fig. 1, the projection copying apparatus comprises cylindrical tubes R1 ... R9, mirror chambers K1 ... K5 and the copying objective O. The distances from the original and from the copy to the optical centre of the objective are equal to twice its focal length. The mirror chambers K2, K3 and K4 contain plane mirrors S1, S2 and S3 with silvered surfaces. The mirror chamber K1, Fig. 2, contains three prismatic reflectors having reflecting surfaces S5 ... S8. The prismatic bodies A, B are movable by screws in the directions shown by the arrows. The chamber K5 contains a rotatable cylinder C having an oblique silvered surface 84. The part I of the copying apparatus may be moved parallel, and the part II of the copying apparatus at right angles, to the vertical plane of the carrier F. The coincidence of the optical images of the three negative component pictures is checked through the microscope M. The carrier F is drawn between two relatively movable glass plates P1, P2, coated with opaque layers but each having three transparent windows forming adjustable apertures.
Patent GB-1311600-A (GB)
Title: Alkyl substituted heptenols octenols and nonenols
IPC: A61Q13/00
Filed: 1971-10-01
Abstract: 1311600 Unsaturated acyclic alcohols L GIVAUDAN & CIE SA 1 Oct 1971 [2 Oct 1970] 45819/71 Heading C2C [Also in Division A5] The invention comprises isomeric mixtures of compounds (I), where R<SP>1</SP> is C 1-3  alkyl or alkylidene, R<SP>2</SP> is C 1-4  alkyl or alkylidene and the broken line represents a single bond from the C 6 -atom to an adjacent carbon atom and their preparation by (a) methylating a compound (II) or (b) dehydrating a diol (III). Unsaturated alcohols (II) may be made by reacting ketones R<SP>1</SP>COR<SP>2</SP> with compounds (V), reducing the unsaturated diols (VI) and dehydrating the saturated diols (IX). Diols (III) may be made by reacting ketones R<SP>1</SP>COR<SP>2</SP> with the unsaturated alcohol (VII) and reducing the resulting unsaturated diol (VIII). 2,6 - Dimethylocten - (2) - yne - (4) - diol- (1,6) may be made by reacting 2-methylpenten- (2)-yn-(4)-ol with ethylmagnesium bromide.
Patent GB-1078117-A (GB)
Title: Chemical methods
Inventor: NEMTSOV MARK SEMENOVICH
IPC: B01J27/18
Filed: 1963-11-27
Abstract: Diene hydrocarbons are prepared by reacting dioxan-1,3 with steam containing 0.002-0.06 wt. per cent of phosphoric acid in the presence of a normal metal phosphate, e.g. tricalcium and/or tricadmium phosphate.  The catalyst may contain 3-10% of a corresponding hydrogen phosphate.  The process may be carried out in a multi-stage reactor in which the phosphoric acid is fed at different rates into the different stages together with steam at 700-800 DEG  C., said steam being fed to the first stage at a constant rate of about 1 kg./litre of catalyst/hour and into the other stages at such a rate that the total quantity of steam fed into all the stages is about 1.2 kg./litre of total catalyst/hour. The phosphoric acid need not be added to the catalyst during catalysis but may be added during regeneration of the catalyst. The examples describe the preparation of isoprene, 1,3-butadiene and methyl pentadiene from 4,4-dimethyl, 4-dimethyl and 2,4,4,6-tetramethyl-dioxan-1,3 respectively.
Patent GB-1278415-A (GB)
Title: Photochromic indolino-spiropyrans
Inventor: POOT ALBERT LUCIEN
IPC: C07D491/22
Filed: 1968-10-03
Abstract: 1278415 Indolino-spiropyrans AGFAGEVAERT 10 Sept 1969 [3 Oct 1968] 46947/68 Heading C2C [Also in Division C4] Novel indolino-spiropyrans of the formula in which B represents a phenyl, diphenyl, diphenylmethylene, diphenylcarbonyl or diphenylsulphone group in which the phenyl rings may be substituted by nitro, chlorine or bromine and in those compounds in which B contains a diphenyl grouping, each phenyl group is fused to a different pyran ring, R is a straight or branched chain C 1-11  alkylene radical, A is hydrogen or hydroxyl and R<SP>1</SP> is hydrogen when A is hydroxyl or hydroxyl when A is hydrogen, are prepared by refluxing a solution of a methylene-indoline base with an o-dihydroxydialdehyde of an aromatic compound corresponding to B. The compounds, the preparation of a number of which is described, develop or change colour on exposure to light and are used in photochromic compositions. 1,3,3-Trimethyl-2-methyleneindolin - 6 - ol is prepared by condensing m-methoxyphenylhydrazine with methyl isopropyl ketone, cyclizing the resulting hydrazone to obtain 2,3,3-trimethyl - 6 - methoxy - 3H - indole which is hydrolysed to 2,3,3 - trimethyl - 3H - indolin-6-ol which after quaternization to the 1,2,3,3-tetramethyl-indolium iodide and treatment with NH 4 OH, yields the required compound. 1-(2<SP>1</SP> -  Hydroxyethyl) - 3,3 - dimethyl - 2 - methyleneindoline is obtained by reacting 2,3,3-trimethyl- 3H-indole with bromoethanol and treating the resulting 1-(2<SP>1</SP>- hydroxyethyl) - 2,3,3 - trimethyl- 3H - indolium bromide with NH 4 OH. 3,3<SP>1</SP>- Dinitro - 5,51 - disalicylaldehyde and 3,3<SP>1 </SP>- dinitro - 5,5<SP>1</SP>- methylene - disalicylaldehyde are prepared by nitration.
Patent GB-1137616-A (GB)
Title: Coolant salt for a molten salt breeder reactor
IPC: C09K5/12
Filed: 1967-10-16
Abstract: 1,137,616. Cooling reactors. UNITED STATES ATOMIC ENERGY COMMISSION. 16 Oct., 1967 [25 Nov., 1966], No. 47032/67. Heading G6C. In a molten-salt-fuel, breeder nuclear reactor power plant, steam generation is effected in heat exchangers and the reactor coolant is a liquid salt. The fuel salt is separated from the blanket salt by graphite tubes and supercritical steam is generated in the exchangers. The fuel and blanket salts flow through separate heat exchangers. The secondary coolant, the liquid salt, flows first through the fuel heat exchanger and then through the blanket exchanger passing next to steam superheaters. The coolant salt may also be circulated through reheaters which heat a supply of steam for the intermediate pressure turbine. The fuel salt consists of uranium fluoride dissolved in the fluorides of 7-lithium and beryllium, the breeder material is a mixture of the fluorides of 7-lithium and thorium. The coolant salt is the mixture NaF - KF - BF 3 . The blanket gas in the coolant circuit may be BF 3 .
Patent GB-1346127-A (GB)
Title: Upholsered furniture
IPC: B29C44/14
Filed: 1972-10-12
Abstract: 1346127 Upholstered seats HERMAN MILLER Inc 12 Oct 1972 [21 Oct 1971] 47042/72 Heading A4M [Also in Division B5] Resilient polyurethane foam is injected between upholstery material 11 and a furniture shell 12 to form a foam-padded chair shell (See Division B5). The material 11 may be a vinyl material or a textile fabric sealed to prevent bleedthrough of foam during moulding. A vinyl edge trim 13 is fitted around the peripheral strip where the material 11 directly contacts the shell 12.
Patent GB-1527597-A (GB)
Title: Coating particulate fertilisers
IPC: C05G3/00
Filed: 1974-10-31
Abstract: 1527597 Fertilizer coated with 6-chloro-2-trichloromethyl pyridine FISONS Ltd 27 Oct 1975 [31 Oct 1974] 47099/74 Heading C1B 6-Chloro-2-trichloromethylpyridine is applied, uniformly, to a particulate solid, e.g. a fertilizer, in a liquid paraffin. The paraffin preferably melts at - 70‹ C.- +50‹ C., e.g. a kerosene, petroleum, slack wax or light oil, and may be heated up to 100‹ C. for application. Preferably 0À02-3% of the compound is applied, based on the weight of particles. A composition comprising 4-45 wt. per cent of the compound and a paraffin is claimed per se, and it may also contain a wax, polymer, surface active agent, or a C 8 -C 20  alkylamine.
Patent GB-1074959-A (GB)
Title: Process and apparatus for the production of a seamless tube and tubes produced thereby
Inventor: CALMES ALBERT HENRI
IPC: B21B45/04
Filed: 1964-11-19
Abstract: 1,074,959. Rolling seamless tubes. CONTUBIND SOC. ANON, and LORRAINE-ESCAUT SOC. ANON. Nov. 9, 1965 [Nov. 19, 1964], No. 47117/64. Heading B3M. Seamless metal tubes are produced by piercing a hot blank 1, Fig. 1, to form a shell, spreading a scale-preventing, or scale lessening, flux over the inner peripheral surface of the shell, the flux having a melting-point substantially lower than the temperature of the shell, rotating the shell about its axis at a speed which will keep the flux spread over the bore of the shell, and passing the shell and a mandrel 2 between rolling mill rolls 10. Mandrel 2 is lubricated by means 40, and is rotated by means 34. Shell 1 is supported by two or three pairs of parallel rollers 15 driven from a motor 16 by a chain drive 17, and the shell is held in engagement with the rollers by a friction roller 18, carried by levers (18a), which is pivoted by a pneumatic or hydraulic cylinder (19). Stops (20) are provided on the ends of lever (18a) so that a shell is prevented from passing down a skid (21) on to mandrel 2 until the previous shell has been removed. The shell is axially movable prior to being supported by mandrel 2 by skewed rolls, and rolls (30), (30), may be provided as part of a conveyer for rotating the shell.
Patent GB-1519535-A (GB)
Title: Bioresistant cellulose ethers
IPC: C08B11/00
Filed: 1976-11-12
Abstract: 1519535 Cellulose ethers: preparation using mixed alkali catalyst UNION CARBIDE CORP 12 Nov 1976 [14 Nov 1975] 47119/76 Heading C3A Cellulose ethers are prepared by contacting the unsubstituted anhydroglucose units of cellulose with one or more etherification agents in the presence of a catalyst comprising a mixture of sodium and lithium hydroxides with a weight ratio of total hydroxide : cellulose of 0À1 to 0À8 and a weight ratio of lithium hydroxide to sodium hydroxide of 0À1 to 10, the cellulose ether being resistant to enzyme catalyzed hydrolysin. The etherifying agent may be an epoxide, e.g. ethylene or propylene oxide or a halide, e.g. R<1>-X where R<1> is 1-10 C. alkyl or 6-12 C. aryl or aralkyl and X is a halogen, e.g. methyl chloride.
Patent GB-1537407-A (GB)
Title: Micro-circuit arrangements
IPC: H01P1/04
Filed: 1976-11-13
Abstract: 1537407 Connecting micro-circuits MARCONI INSTRUMENTS Ltd 15 Sept 1977 [13 Nov 1976] 47352/76 Heading H2E [Also in Division H1] Conducting strips 11, 12 of two microcircuits 9, 10 are electrically connected by means of a bridge piece 19 consisting of a block 20 of insulating material carrying a conductive member, e.g. blade 21 or 28, the ends of which electrically connect respective strips 11, 12 or a chosen strip to the inner conductor of a co-axial socket 29. The block 20 fits in a gap 18 of a common wall 17 of adjacent individual compartments 15, 16 containing the microcircuits 9, 10.
Patent GB-1121503-A (GB)
Title: Improved potentiometer device
Inventor: ALDRED LESLIE
IPC: G01J1/24
Filed: 1964-11-23
Abstract: 1,121,503. Light-controlled potentiometer. IMPERIAL CHEMICAL INDUSTRIES Ltd. Nov. 8, 1965 [Nov. 23, 1964], No. 47557/64. Heading G1A. [Also in Division G2] A light-controlled potentiometer device is used in a spectro-photometer servosystem for correcting for variations in the detector sensitivity with wavelength. The optical system for the sample beam path comprises a lamp 6, collimator 7 and slit 8, passing light to dispersing prism 9, associated with collimating lenses. A narrow band of wavelengths is passed by slit 10 associated with a mirror 11, a particular band being selected by movement of the slit-mirror combination across the dispersed beam. Substantially monochromatic light is obtained by passing the beam through a further prism and slit 13. The sample to be investigated is interposed in this light beam. An error signal obtained from the photo-meter unit D and representing the difference between the intensities of the sample light beam and a reference beam is compensated for variations in detector sensitivity with wavelength by applying it via servo-amplifier E to the potentiometer device C. The compensated error signal is then applied to servomotor 19, which besides driving the photo-meter unit to reduce the error signal to zero, drives a recording pen on chart 17, recording sample spectral characteristics free from detector sensitivity errors. The potentiometer device C comprises a pair of series-connected photo-resistors 2A, 2B across which is connected the error signal. Each resistor is associated with a polarizing disc 4A, 4B, one polarized at right angles with respect to the other. Light from a source 1 is passed through a rotatable polarizing disc 3 before passing through the discs 4A, 4B on to the photoresistors. Rotation of the disc 3 is by means of a lever 5 controlled by a cam 18, specially shaped to introduce the compensation necessary to correct for the detector sensitivity variations at the particular wavelengths through the spectrum. The rotation causes one resistor to receive more light as the other receives less, and by taking the output from one resistor (2A), a signal representing a compensated error signal is obtained from the servo-amplifier E. Another shaped cam 18 is also driven by motor 16,to move the slit-mirror combination across the dispersed beam, so that wavelengths through the spectrum are subjected to the sample synchronously with the application of a correction to the error signal.
Patent GB-478067-A (GB)
IPC: G03C7/14
Abstract: 478,067. Welding glass places. OPTICOLOR AKT.-GES. July 14, 1936, No. 19548. Convention date, July 15, 1935. Drawings to Specification: [Class 56] [Also in Group XX] In a multiple-zone colour filter of the kind used in colour photography, one of the glass cover plates is formed by welding together the adjacent edges of juxtaposed plates of different spectral permeability. The various glass plates are constructed from glasses having approximately the same grinding and thermal qualities. They are ground plane-parallel after the welding operation, which is performed by placing the glasses on a horizontal support between press plates, heating the support to the softening temperature of the glass as determined by a test strip of glass, moving one of the press plates towards the other to press the glasses together edgewise, and allowing to cool slowly to avoid setting up strains.
Patent GB-1415295-A (GB)
Title: Substituted phenoxy-alkyl-carboxylic acids and derivatives  thereof
IPC: C07C323/22
Filed: 1971-10-14
Abstract: 1415295 Phenoxyalkyl-carboxylic acid derivatives ORCHIMED SA 16 Oct 1972 [14 Oct 1971 (2)] 47926/71 and 47927/71 Heading C2C Novel compounds I (in which R<SP>II</SP> and R<SP>V</SP> are H, CH 3 , C 2 H 5 , C 6 H 5 , p-chlorophenyl or p-fluorophenyl; R<SP>III</SP> and R<SP>IIII</SP> are H, halo, 1-5C alkyl, CF 3 , SCH 3 , SOCH 3 , SO 2 CH 3 , OCH 3 , OH, C 6 H 5  or substituted phenyl; R<SP>VI</SP> is H, 1-5 C alkyl, aryl-optionally substituted by CH 3 , CF 3  or halo-, cycloalkyl, OH, 1-6 C alkoxy, optionally substituted aryloxy, cycloalkoxy, cycloalkenyloxy, NR 3 R 4 , NHCH 2 CH 2 NR 3 R 4  or -O-alkylene-NR 3 R 4 ; Y<SP>1</SP> is OH, 1-4C alkoxy, -NR 3 R 4 , or -O-alkylene-NR 3 R 4 ; X<SP>1</SP> is O or -NORO ; R 0  is H, 1-5C, -CH 2 CH 2 NR 3 R 4  or and R 3  and R 4  are H, 1-5C alkyl, 3-7C cycloalkyl or aryl optionally substituted by halo, CH 3  and/or CF 3 ; or NR 3 R 4  is a 5-7 membered heterocyclic ring, optionally containing a further heteroatom selected from O, S and N, or is -NH(CH 2 ) 4 CH(NH 2 )COOH or -NHCH(COOH)CH 2 SH; with the provisos that (i) if R<SP>III</SP> and R<SP>IIII</SP> are not both H, then R<SP>VI</SP> is CH 3  or p-chlorophenyl and (ii) if Y<SP>1</SP> is OH or alkoxy, R<SP>VI</SP> is H or 1-5 C alkyl and one of R<SP>II</SP> and R<SP>V</SP> is H, then the other of R<SP>II</SP> and R<SP>V</SP> is CH 3  or C 2 H 5 ) are prepared by conventional chemical processes. Compounds claimed in Specification 1,268,321 are specifically disclaimed. 4 - Hydroxy - 41 i chlorobenzophenone is prepared by reaction of phenol with p-chlorobenzoyl chloride in the presence of AlCl 3 . Ethyl p-carboxyphenoxyacetate is prepared by reaction of ethyl bromoacetate with p-hydroxybenzoic acid. Pharmaceutical compositions useful as analgesics, anti-inflammatory agents, psychotropic agents, cardiovascular agents, anti-tussive agents, normolipemiants and hypocholesterolemiants comprise a compound I together with a suitable diluent or carrier.
Patent GB-1590551-A (GB)
Title: Phenylhydroquinone-terephthalate polyesters
IPC: C08G63/19
Filed: 1977-11-18
Abstract: Mouldings, for example fibres, made from a polyester at least predominantly comprising recurring units of the formulae (I) and (II)   <IMAGE>  and having a fibre-forming molecular weight are described. Mouldings in fibre form are preferably produced by spinning a melt of the polyester, winding up the spun product with formation of an oriented fibre, and heating the fibres in an inert atmosphere for a time sufficient to increase the tenacity of the fibres.