baber/WOPTO huggingface dataset:
Patent GB-704079-A (GB)
Title: Improvements relating to the purification of chlortetracycline
Filed: 1950-11-08
Abstract: An improvement in or modification of the process of purifying crude chlortetracycline also known as aureomycin according to the parent Specification comprises extracting chlortetracycline, preferably at a temperature not exceeding 55 DEG  C., from an aqueous acidic solution of crude chlortetracycline at a pH of 1 to 3 with butanol whereby an aqueous layer and a butanol layer are formed, assisting the extraction by adding a water-soluble salt, preferably sodium chloride, which is dissolved in the aqueous layer, and recovering chlortetracycline from the butanol layer. The butanol layer may be concentrated in vacuo below 50 DEG  C., and the chlortetracycline so obtained washed with ethanol, water and again ethanol, or other solvents may be used.  The aqueous acidic solution of chlortetracycline may be the filtrate obtained after treating an acid solution of crude chlortetracycline with decolorizing carbon, or may be derived from a fermentation mash by any suitable treatment such as (a) acidification of the mash, filtration and concentration of the filtrate in vacuo below 50 DEG  C., and (b) treating the mash with alkali such as calcium hydroxide, filtering off the solids and extracting the solids with mineral acid.  Other salting out agents are sodium iodide, sodium bromide, barium chloride, sodium sulphate, ammonium sulphate, potassium sulphate, potassium chloride, magnesium sulphate, sodium oxalate, ammonium chloride and triethylamine hydrochloride.
Patent GB-882648-A (GB)
Title: Improvements in or relating to buckles, more particularly the locking tongue thereof
IPC: A44B11/25
Filed: 1960-08-05
Abstract: 882,648. Buckles. HOLMBERG, G. E. Y. Aug. 5, 1960 [Aug. 14, 1959], No. 27301/60. Class 43 [Also in Group XXV] A locking tongue for a buckle comprises a rod 13 extending along a slot 11 for displacement on the locking tongue and a second slot 14 parallel to the slot 11, a strap passing round the rod has the two runs extending from the rod through the slot 11 and then returned through the slot 14. One longitudinal wall of the locking tongue is interrupted at the middle section to provide two projections 15. The rod has hook-like ends which engage the locking tongue for sliding movement of the rod on the locking tongue.
Patent GB-210823-A (GB)
Title: Improvements in optical systems for colour kinematography
IPC: G03B33/00
Filed: 1922-10-09
Abstract: 210,823. Donisthorpe, F. W., and D.C.L. Syndicate, Ltd. Oct. 9, 1922. Optical-projection apparatus; reflector systems.-In a projector for colour kinematography having means for simultaneously projecting a pair of images and an arrangement of three reflecting surfaces for rotating the images through 90‹ about the axis of projection, as described in Specification 102,280, the third reflecting surface is formed in two parts which are relatively adjustable to produce registration of the images on the screen. As shown, the projection beam is reflected by a mirror A to a mirror B by which it is reflected to a third mirror C. D and to the screen. The mirrors are carried in a cell or casing 1, the parts C, D of the third mirror being supported in a frame 17 adjustably mounted on a screwed pin 19 which passes through a slot 20 in the frame 1 and is secured by a nut 18. The mirror C is clipped to a plate 23, Fig. 4, which is pivoted to the frame 17 at 25 and is connected to a plate 28, also pivoted at 25, by means of a lug 26 and screw 27 and by means of a leaf spring 29 bearing against a screw 53 on a bracket 48 secured to the plate 28. Rotation of the screw 53 finely adjusts the inclination of the mirror C to the plate 28 and to the mirror D. The mirror D is clipped to a plate 24 which is similarly adjustable with respect to a plate 33 pivoted at 52 but the adjustment is about an axis at rightangles to the axis of the pivot 25. The relative inclination of the plates 28, 33 may be finely adjusted by rotation of a milled head 51 on a rod 35. The rod 35 has right and left handed threads 42, 43 engaging nuts 44, 45 pivoted in brackets 48, 49 secured respectively to the plates 28, 33, and is prevented from longitudinal movement by a sleeve 50 secured to it and engaging between slotted supports 38 carried by the frame 17. The mirror A is clipped to a plate 3 carried by a plate 4 rotatable about a pin 7 by means of a screw 9 passing through a nut 10 and engaging a bracket 8 on the plate 3. Screws 4<1> enable the inclination of the plate 4 to be adjusted. The mirror B is clipped to a plate 13 hinged at 14 to the casing 1 and adjustable by a screw 15. The mirrors A, B may be replaced by prisms combined to form a single piece.
Patent GB-467782-A (GB)
Title: Improvements in or relating to electric motor control
IPC: H02P23/00
Filed: 1936-10-08
Abstract: 467,782. Control of motors. IGRANIC ELECTRIC CO., Ltd. Oct. 8, 1936, No. 27329. Convention date, Oct. 12, 1935. [Class 38 (iii)] Continuous reversals.-A driven device, which is of such a character that it initiates its own reversal after coasting, is driven in reverse directions by an electric motor, and reversal of the driven device is effected by first interrupting the circuit of the driving motor, and then, by the provision of a switch actuated by the driven device through a slipping transmission, establishing a reverse circuit for the motor in response to the self-initiated reversal of the driven device after coasting. The invention is described as applied to the driving motor 6 of a horizontally mounted container 10 in which cereal or grain is dried. Upon operation of a switch 23 a self-maintained relay 22 is energized and completes a circuit for a reversing contactor 13 which closes the motor circuit. The energizing circuit for the contactor 13 includes contacts 39b of a switch 39 frictionally operated from the motor shaft, and these contacts may be initially shunted by contacts of a relay 21 energized when the switch 23 is operated, so as to ensure the energization of the contactor 13. The motor rotates the container 10 and maintains closed the contacts 39b. After a predetermined number of revolutions of the container, a limit switch 15 is opened by a travelling nut 18 operated from the container shaft, and the contactor 13 is de-energized. The container coasts and after coming to rest, the material in the container causes a reverse movement so that the friction switch 39 is operated to open contacts 39b and close contacts 39c. This effects the energization of reversing contactor 12 which closes to connect the motor 6 to drive the container in the reverse direction as initiated by the material. After a predetermined number of revolutions of the container in this reverse direction a limit switch 14 is operated by a travelling nut 17 and the contactor 12 is de-energized, the container again coasting to rest and reversing to reclose contacts 39b, whereupon the cycle is repeated until a stop switch 31 is operated. Operation of the stop switch 31 de-energizes the relay 22 and the circuit to both contactors 12, 13 is opened. The grain may be delivered from the rotating container 10 to reduce the load suitably before the stop switch is operated, and operation of the stop switch may effect application of an electromagnetically-released brake. The limit switch 14, 15 are coupled by a link 16 so that each closes as the other is opened. The switch 39 is described in Specification 412,864. The invention is applicable to electrically-driven laundry machines.
Patent GB-658398-A (GB)
Title: Improvements relating to material drying apparatus
IPC: D21F5/02
Filed: 1949-10-25
Abstract: 658,398. Drying paper. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 25, 1949, No. 27398. Convention date, Oct. 30, 1948. [Class 96] [Also in Group XIII] Drying apparatus for paper &c. comprises an enclosure for the material to be dried, a steam driven prime mover driving a compressor arranged to withdraw water vapour from the enclosure for compressing and heating the water vapour, means for conducting exhaust steam from the prime mover into heat exchange relationship with the material to heat it and means arranged to employ the heated compressed water vapour for supplying additional steam to heat the material. As shown, a paper dryer 10 has rotating cylinders 12, 13 heated by steam supplied from a line 14 and distributing manifolds 15, 16. Steam for heating the rolls is supplied from two sources, a boiler 18 and an auxiliary boiler 19. The supply of steam from the boiler 18 is maintained at a predetermined pressure by operation of a valve 20 under control of bellows 21. Water vapour removed from the paper collects in the housing 11 and is removed through exhaust 23 by a compressor 24 driven by a turbine 25 supplied with steam from the boiler 18 through valve 26, the exhaust steam from the turbine being supplied to line 14 through connection 27. The water vapour leaving the housing is compressed, becomes superheated and is discharged through a line 28 into a header 29 in the boiler 19 and through tubes 30 to a dis. charge header 31. The heat is removed by the boiling of the water in the boiler 19 and the condensed vapour flows to a sump or separator 33.. Steam generated in the boiler 19 flows through a line 34 to the supply line 14. Con. densate from the rolls 12, 13 is supplied as feed water to the boilers by a pump 36 and condensate from the separator 33 flows through a preheater 41 for the boiler 19. A flow meter 47 is provided on an air discharge pipe 48 for removing non-condensables from the tank 33 and is connected to a motor controller 51 which operates a motor 54 to control the supply of steam through valve 26 to the turbine 25 and thus the operation of the compressor 24 to maintain the required rate of removal of water vapour. Valve 20 operates as a makeup valve to supply steam when the supply from the turbine exhaust and the boiler 19 is insufficient.
Patent GB-1096955-A (GB)
Title: Poly-streptomycylidene derivatives
Inventor: VANDERHAEGHE HUBERT
IPC: C07H15/238
Filed: 1964-06-02
Abstract: The invention relates to polystreptomycylidene derivatives, particularly of general formula [Streptomycylidene = N]nA1 wherein n is at least 2 and not higher than 4 and A1 is a polyvalent group derived from a compound of general formula H2N-A-NH2 wherein A is -O-(CH2)n-O- (wherein n is 2 to 6), <FORM:1096955/C2/1> or -NH-Z-NH-wherein Z is a lower alkane (1-4 C)-poly (from 2 to 4) carbonyl or a benzene dicarbonyl radical, or is the residue of a C1- 6 alkane, benzene, diphenyl, diphenylmethane, polymethylene (2-4 C atoms)-diphenyl or naphthalene, or a hydrazino or carbohydrazido derivative thereof. The compounds are produced by reacting a streptomycin acid addition salt with an acid addition salt of a compound having at least two amino groups which are capable of reacting with the aldehyde group of streptomycin and which are hydrazino, hydrazido or oxy-amino groups, particularly a compound yielding A1 above. The compounds are obtained in the form of acid addition salts, e.g. hydrochloride, citrate tartrate, succinate and methane sulphonate.  A pharmaceutical composition for lowering cholesterol blood levels, comprises a polystreptomycylidene (as above) or a salt thereof and a carrier.
Patent GB-1130428-A (GB)
Title: Improvements in nuclear reactor plants which include steam generators
IPC: G21C1/00
Filed: 1966-06-20
Abstract: 1,130,428. Reactors. SULZER BROS. Ltd. 20 June, 1966 [25 June, 1965], No. 27464/66. Heading G6C. A nuclear reactor 2 and steam generating heatexchangers 6, are enclosed in a concrete pressure vessel 1, and the carbon dioxide coolant gas pumping motors 21, are housed within the concrete walls. Coolant circulates vertically downwards through the core, to the exchangers beneath and then vertically upwards in an annular duct 31<SP>1</SP> between the pressure vessel inner wall and the core. Horizontal shields 7 and 3 are mounted above and below the core and polar co-ordinate traversing gear carries the fuelling mechanism above the upper shield, within the pressure vessel. The heat-exchanger units may be mounted to form either a rectangular or pentagonal shape, and relative movement of the exchanger tubes is restricted by rods engaging frictionally the tube outer surfaces. The coolant flows through the exchangers from the distribution chamber 26 horizontally into the collector chambers 30, i.e. the flow is perpendicular to the line joining the centres of the core and distribution chamber.
Patent GB-688501-A (GB)
Title: Improvements in or relating to rubber antioxidants
IPC: C08K5/13
Filed: 1950-11-10
Abstract: Synthetic rubber, e.g. a copolymer of butadiene with styrene or acrylonitrile, is preserved by treating it with a compound of the general formula <FORM:0688501/IV (a)/1> where R and R1 are like or unlike alkyl, cycloalkyl, or aralkyl groups containing at least 3 carbon atoms.  Preferably R and R1 are alkyl groups containing not more than four carbon atoms.  Specified compounds are those in which R and R1 of the above formula are dimethyl, diethyl, di-n-propyl, di-isopropyl, di-n-butyl, di-tert.-butyl, di-isobutyl, di-isoamyl, di-tert.-amyl, di-n-hexyl, di-n-heptyl, di-n-octyl, di-tert.-octyl, dilauryl, dicyclohexyl, dicyclopentyl, di-gammaphenyl-propyl, di-benzyl, di-beta-phenethyl, and di-(alpha-methyl benzyl) groups.ALSO:Natural or synthetic rubber is preserved by treating it with a compound of the general formula:- <FORM:0688501/V/1> where R and R1 are like or unlike alkyl, cycloalkyl, or aralkyl groups containing at least 3 carbon atoms.  Preferably R and R1 are alkyl groups containing not more than four carbon atoms.  In examples, a mix is made up from pale cr<\>zepe rubber, zinc oxide, lithopone, sulphur, diphenyl guanidine phthalate, benzothiazyl thio benzoate, paraffin, and 3,31 di-n-propyl-4,41-dihydroxy biphenyl added and the antiageing effect noted.  Other specified compounds which may be used are those in which R and R1, of the above formula are dimethyl, diethyl, di n-propyl, di isopropyl, di n. butyl, di tert. butyl, di isobutyl, di iso amyl, di tert. amyl, di n. hexyl, di n. heptyl, di n. octyl, di tert. octyl, di lauryl, dicyclohexyl, di cyclopentyl, di gammaphenyl propyl, dibenzyl, di beta phenethyl, and di (alpha-methyl benzyl) groups.
Patent GB-953387-A (GB)
Title: 5-allyl-5-(ª-hydroxypropyl)-barbituric acid and a process for the production thereof
IPC: A61K31/00
Filed: 1961-07-28
Abstract: The invention comprises 5-allyl-5-(b -hydroxypropyl)-barbituri acid having a melting point of 164-165 DEG C.; and its preparation by reacting diallyl-barbituric acid with sulphuric acid until the double bond in one allylic side chain is saturated, subjecting the resultant reaction product to hydrolysis with water, dissolving the hydrolysed product in an organic or inorganic solvent therefor, adding to the resultant solution a substantially saturated aqueous halide solution, whereby any sulphuric acid present is converted into the sulphate of the cation of the added halide and the thus liberated hydrohalic acid is dissolved in the organic or inorganic phase, and recovering the desired product by precipitation from the solution in the organic or inorganic solvent.  Pharmaceutical compositions comprise the compound of the invention and a pharmaceutically acceptable carrier. Forms for parenteral (solution) and oral (tablet) administration are described. The compositions may be used to treat diencephalic disorders, e.g. migraine, cephalea vasomotorica, and convulsions.
Patent GB-1487108-A (GB)
Title: Washing process
IPC: D06L1/16
Filed: 1975-06-30
Abstract: 1487108 Washing textiles ROHM GmbH 30 June 1975 [29 June 1974] 27551/75 Heading D1P A process of washing textiles such as cotton, wool and synthetic fibres comprises treating the textiles with a first ageous wash which contains a cationic surfactant such as coconut oil amine acetate, trimethyl-dodecyl-ammonium chloride, trimethyl-octadecyl ammonium chloride, dimethyl-dodecyl-benzyl-ammonium chloride, trimethyl stearoalkyl-ammonium chloride N-dodecyl-pyridinium chloride, N- methyl-N-dodecyl-morpholinium chloride and dimethyl oeta decyl ethanol ammonium chloride, and a non-ionic surfactant which is preferably a product obtained by the addition of ethylene oxide to hydrophobic compounds containing at least one active hydrogen atom, e.g. fatty alcohol, alkyl phenols &c, and a second aqueous wash which contains an anionic surfactant such as soaps, and surfactants of the sulphonates and sulphate type containing one or more aliphatic cycloaliphatic, cycloaliphatic or fatty aromatic groups or derivatives thereof, and/or a non-ionic surfactant. The first wash is carried out for 5-30 mins., at 50-90C and quantities of surfactant ranging from 0.1 to 2 g/l of the washing medium were used. The second wash was carried out at 50-90C using quantities of surfactants which range from 3 to 10 g/l. Sodium cellulose glycolate, glue, gelatine, salts of ether carboxylic acids, ether sulphonic acids of starch or cellulose and salts of acidic sulphuric acid esters are used with the first wash as greying inhibitors for counteracting the redeposition of dirt, loosened from the fibre, from the washing medium. The second wash contains ingredients of detergents, including one or more builders, such as phosphates, silicates, perborates, and dirt carriers, foam-stabilisers, disinfectants, optical brighteners, scents and dyes.
Patent GB-598102-A (GB)
Title: Improvements in lavatory seats
IPC: A47K13/00
Filed: 1945-10-20
Abstract: 598,102. Lavatory seats. WRIGHT, F. Oct. 20, 1945, Nos. 27629/45 and 3349/46. [Class 26] [Also in Group X] A lavatory seat comprises a piece of wood or plastic material 1 and a metal base 2 having sides 3 which are pressed inwardly, e.g. by means of a press, to interlock with the piece 1. The sides 3 may have inturned flanges 6, which may be serrated, and the sides 4 of the piece 1 may be inset to form shoulders 5, the flanges 6 and shoulders 5 being omitted at the corners. The piece 1 may be formed from strips of wood.
Patent GB-489757-A (GB)
Title: Carriers for catalysers and processes for the manufacture thereof
IPC: B01J37/02
Filed: 1936-10-12
Abstract: A catalyst carrier comprises a layer of aluminium or aluminium alloy on a metal support other than aluminium, and a layer of aluminium oxide is artificially formed on the layer of aluminium or alloy.  The support and/or the surface of the aluminium or alloy thereof may be roughened before applying either the metal coating and/or the oxide coating.  The aluminium coating is preferably oxidized electrolytically, and may be alited or diffused into an iron support. The coating may also be sprayed on to the support.  The Specification as open to inspection under Sect. 91 comprises also a catalyst carrier consisting solely of a metal or an alloy thereof, which metal forms an oxide which is difficultly reducible, such as aluminium, and the surface of which is coated with a layer of the oxide.  The metal or alloy may also be applied to the surface of the support together with a substance which can readily be dissolved out of the coating without affecting the metal or alloy to increase the surface thereof. This subject-matter does not appear in the Specification as accepted. Reference has been directed by the Comptroller to Specifications 315,798, [Class 82 (ii)], 369,909, (as open to inspection under Sect. 91 of the Acts), 396,453, and 401,368, [all in Group XXXVI].ALSO:A catalyst carrier comprises a layer of aluminium or aluminium alloy on a metal support other than aluminium, and a layer of aluminium oxide is artificially formed on the layer of aluminium or alloy.  The support and/or the surface of the aluminium or alloy thereof may be roughened before applying either the metal coating and/or the oxide coating.  The aluminium coating is preferably oxidized electrolytically, and may be alited or diffused into an iron support. The coating may also be sprayed on to the support.  The Specification as open to inspection under Sect. 91 comprises also a catalyst carrier consisting solely of a metal or alloy thereof, which metal forms a difficulty reducible oxide, such as aluminium, and the surface of which is coated with a layer of the oxide.  The metal or alloy may also be applied to the surface of the support together with a substance which can readily be dissolved out of the coating without affecting the metal or alloy, to increase the surface thereof.  This subject-matter does not appear in the Specification as accepted. Reference has been directed by the Comptroller to Specifications 315,798, 369,909, (as open to inspection under Sect. 91 of the Acts), 396,453, and 401,368.
Patent GB-323492-A (GB)
Title: An apparatus to prevent the radiation of oscillations from dynamos, motors, and the like machines
IPC: H04B15/02
Filed: 1928-09-27
Abstract: 323,492. Dickinson, T. Sept 27, 1928. Protective arrangements. -A dynamo-electric machine, not associated with wireless equipment, has three equal condensers C<1> - - C<3>, connected as shown in Fig. 1, across its terminals to prevent the radiation of electrical oscillations. Two small fuses, F<1>, F<2>, are included in the circuit. The whole may be arranged in a box with connecting sockets to form a self-contained unit.
Patent GB-800275-A (GB)
Title: Improved method of treating cast iron and castings obtained thereby
Filed: 1955-09-29
Abstract: The process of heat treating white cast iron containing 0.7 per cent 3.0 per cent copper as claimed in the parent Specification is modified by quenching after heating to above the eutectoid temperature into oil at 95 to 110 DEG C. and then cooling to room temperature in air, or by a direct quench to room temperature in cold oil.  The castings treated have a thickness less than 13/32 inches.
Patent GB-390808-A (GB)
Title: Improvements in or relating to the manufacture of dyes
IPC: C09B23/08
Filed: 1931-10-06
Abstract: Dicarbocyanine dyestuffs are obtained by condensing an acetal of propargyl aldehyde, or of a b  alkyl or aryl derivative thereof, with a quaternary salt of a heterocyclic nitrogenous base having an active a  methyl group.  In examples: (1) 1-methylbenzthiazol ethiodide or the corresponding oxazole is condensed with crude propargylaldehydediethylacetal in the presence of pyridine: (2) 1-methylbenzthiazol ethiodide is similarly condensed with pure propargylaldehydediethylacetal: (3) quinaldine ethiodide is condensed in diacetone alcohol with pure propargylaldehydediethylacetal: (4) 1-methyl-a -naphthothiazol ethiodide is condensed in pyridine with crude propargylaldehydediethylacetal: (5) 1-methyl benzselenazol ethiodide is condensed in diacetone alcohol with pure propargylaldehydediethylacetal.  The following dyestuffs are also prepared: 2 : 2<1>-diethyl-3 : 4 : 3<1> : 4<1>-dibenzthiodicarbocyanine (from 2 - methyl - b  - naphthothiazol ethiodide and propargylaldehydediethylacetal) and 2 : 2<1>-diethyl-8-methylthiodicarbocyanineiodide (from 1-methylbenzthiazole ethiodide and tetrolaldehydediethylacetal). 2-Methyl-b -naphthoxazole and 2 : 3 : 3-trimethyl indolenine, the quaternary salts of which may be used, are mentioned.  The dyestuffs are photographic sensitizers for silver halide emulsions. Propargylaldehydediethylacetal is prepared from acroleindibromide by heating with excess of alcoholic potash, filtering off the potassium bromide, and extracting with ether after distilling off the alcohol and adding water.  The crude diethylacetal obtained by fractionating the ether extract is found to give greater yields of dyestuff than the pure product which may be obtained by allowing the crude product to stand over solid caustic potash and refractionating.  b -Phenylpropargylaldehydediethylacetal may be prepared from monobromcinnamic aldehyde diethylacetal by warming with alcoholic potash.  Tetrolaldehydediethylacetal may be prepared from dibromcrotonicaldehyde diethylacetal by warming with alcoholic potash under reduced pressure and fractionating.