baber/WOPTO huggingface dataset:
Patent GB-946108-A (GB)
Title: Improvements in or relating to photographic reproduction
IPC: C07D215/04
Filed: 1960-06-24
Abstract: 2-Vinyl-4:5-diaryl-oxazoles are made by reacting acrylonitrile with benzoin or the appropriately-substituted benzoin, i.e. 4-dimethylamino, 4-diethylamino, 4-dimethylamino-41-chloro, and 4-dialkylamino-2-chloro where alkyl is methyl, ethyl, propyl and butyl.  2-Vinyl-quinoline and 3-vinyl-dibenzofuran are made by dehydration of the corresponding carbinols.  2-(a -hydroxyethyl)-9-methyl-carbazole and 3-(a -hydroxyethyl)-dibenzofuran are obtained by reducing the corresponding acetyl compounds with Raney nickel.  3-(a -hydroxyethyl)-9-ethyl-carbazole is prepared by reducing the 3-acetyl compound with sodium borohydride or treating the 3-aldehyde with methyl magnesium iodide.  3-Acetyl-9-ethyl-carbazole is obtained by N-ethylation with diethyl sulphate.  9-Isopropyl-carbazole - 3 - aldehyde and 9 -(p-methoxyphenyl)-carbazole-3-aldehyde are made by introduction of the aldehyde group with N-methyl-formanilide. 9-Isopropyl-carbazole is prepared from potassium carbazole and isopropyl bromide.  9-(p-methoxyphenyl)-carbazole is obtained from carbazole and p-bromoanisole.  Specifications 856,770 and 944,107 are referred to.ALSO:Polymers of vinyl-substituted heterocyclic compounds are made by polymerizing the monomers by normal methods with a peroxide or azo catalyst or by boron-fluoride complexes or by simultaneously dehydrating and polymerising the monomers containing a carbinol group; the latter can be prepared in situ by a Grignard reaction from the corresponding aldehydes. Examples are given of the production of polymers of 2-vinyl-quinoline, 2-vinyl-furan, 2-vinyl-benzofuran, 3-vinyl-binenzofuran, 2-vinyl-N-methyl- and -N-ethyl-carbazole, 3-vinyl-N-methyl, -N-isopropyl- and -N-(p-methoxyphenyl)-carbazole and 2-vinyl-4:5-diaryl-oxazoles where the 4- substituent is phenyl, p-dimethylaminophenyl, p-diethylaminophenyl, p-dipropylaminophenyl and p-dibutylaminophenyl and the 5-substituent is phenyl, o-chlorophenyl and p-chlorophenyl. In general the heterocyclic nuclei may be substituted by alkyl, alkoxy, hydroxy, acyloxy, amino or dialkylamino groups.  Copolymers can be made of the above or with another monomer such as styrene, methylstyrene or acenaphthylene.  Photoconductive compositions of the above polymers may also contain dyestuffs (a number mentioned), pigments (ZnO, TiO2), electron-accepting substances as activators and other resins, e.g. ketone resins or chlorinated polyvinylchloride. Suitable activators are compounds having strongly polarizing groups such as cyano, nitro, halogen, keto, quinone, ester, acid or anhydride.  Specified solvents for the polymers are chloroform, glycol monomethyl ether, butanone, benzene and toluene.  The use of poly-N-vinyl-carbazole and poly-N-acrylyl or poly-N-alkylacrylyl compounds is disclaimed, see Specifications 856,770 and 946,107 respectively, but a copolymer of N-vinyl-carbazole and 2-vinyl-4-(p-dimethylaminophenyl)-5-(o-chlorophenyl)-oxazole is mentioned.
Patent GB-784390-A (GB)
Title: Sea-going transport of condensed gas
IPC: B63B25/12
Filed: 1956-07-18
Abstract: 784,390. Carrying bulk cargo. LORENTZEN, H. L. July 18, 1956, No. 22299/56. Class 113. A transport unit for condensed gas comprises at least one substantially spherically-shaped container 2 for the condensed gas situated in a substantially cylindrical fore-and-aft hold of a sea-going vessel. The hull 1 is cigar shaped and may be completely or partly filled with a liquid which is solidified by the temperature of the wall of the container 2 when the latter contains condensed gas. In another embodiment a single casing containing insulation material extends over all the containers and warm air may be introduced into the space between the casing and the hull.
Patent GB-882727-A (GB)
Title: A controllable gate circuit
IPC: G06F1/04
Filed: 1958-07-11
Abstract: 882,727. Pulse gating circuits. OLYMPIA WERKE A.G. July 11, 1958 [Sept. 28, 1957], No. 22299/58. Class 40(6). A predetermined number of clock pulses are selected from a continuous clock pulse train after the appearance of a start pulse and in dependence upon the occurrence of a control pulse sequence which bears a fixed time relation to the clock pulse frequency. The Figure shows a circuit for producing a predetermined number of clock pulses at an output terminal A selected from a clock pulse train applied to input terminal U after the operation of a start pulse applied to terminal EJ and in dependence upon the interval between successive control pulses applied to terminal SJ. The pentode tubes RO1, RO5, RO6 function as AND gates and tubes RO2, RO3, function as bistable flip-flop changeover switches, the tube RO4 functioning as a delay and inverter network. In the normal or standby condition tubes RO1, RO5, RO6 are non- conductive; when the start switch (not shown) is actuated a negative pulse appears at the, input terminal EJ so that the flip-flop RO2 changes over. The rise in voltage at terminal 106 conditions AND gate RO1 to pass the next control pulse at terminal SJ. The resulting negative voltage drop at anode 103 changes over flip-flop RO3, the resulting rise at the grid 118 of AND gate RO6, allows clock pulses from terminal U to pass to output terminal A. The next control pulse at terminal SJ, i.e. at AND gate RO5 gives a negative voltage at terminal 117 which is integrated by the action of capacitor 22 so that the voltage at 112 rises and at 111 falls. This negative drop in voltage changes over the flip-flop RO2, RO3 thus the potential at 110 falls and the AND gate RO6 is closed preventing the further transmission of clock pulses from inputs U to outputs A. The circuit may be restored to its initial condition by the application of a negative clearing pulse to the terminal KT this causes flip-flops RO2, RO3 to be restored in precisely the same manner as by a stopping pulse from the flip-flop RO4.
Patent GB-1531807-A (GB)
Title: Inclined separation plates
IPC: B01D17/02
Filed: 1977-05-10
Abstract: 1531807 Parallel plate separator PORTALS WATER TREATMENT Ltd 10 May 1977 [28 May 1976] 22325/76 Heading B1D A parallel plate separator (e.g. for settling solids from liquids) comprises a container containing a plurality of flexible inclined plates, wherein the plates are movably mounted in the container so that they may be vibrated or shaken to dislodge solids adhering thereto. The plates may be of coated synthetic fabric or metal.
Patent GB-749781-A (GB)
Title: Improvements in or relating to inertia wrenches, screwdrivers and the like
IPC: B25B15/06
Filed: 1953-08-13
Abstract: 749,781. Wrenches; screwdrivers. ATHERTON, H. Aug. 13, 1954 [Aug. 13, 1953], No. 22377/53. Class 61 In an impact wrench or screwdriver comprising a shaft 1 having two helical grooves 2, 3 of opposite hand and a flywheel mounted on the shaft and provided with a key 12 for engagement with one or other of the grooves, intermeshing dogs 22, 23 are provided respectively on the flywheel and on the stop surface at the end of the shaft, the material at each side of a groove, at a point adjacent the stop surface being cut away to at least the depth of the groove so that when the flywheel is in contact with the stop surface, the key is no longer contained between the walls of the groove and relative movement between the two is limited by the dogs. The key, comprising a cylindrical button 11 having a flat sided extension 12, is angularly adujstable in a socket 10<SP>1</SP> in the sleeve 10 which carries the flywheel 9 and operating handles 19. The angular position of the button is determined by the engagement of a spring loaded ball 16 in one of two recesses 17 in the button and is locked in either position by a screw 15. The metal between the grooves is cut away at 24 to form a clearance at the bottom end of the grooves to allow the key to be aligned with one or other of the grooves. Recesses 26 are formed in the other faces of the ribs defining the grooves to accommodate the angular movement of the key. Specification 561,092 is referred to.
Patent GB-410651-A (GB)
Title: Process for colouring the surface of unglazed fired bricks, tiles, earthenware and the like articles
IPC: C04B33/34
Filed: 1933-08-10
Abstract: The surface of unglazed, fired bricks, tiles, earthenware, &c., is coloured by introducing into the kiln during the firing process a chloride of iron, aluminium or chromium, in the absence of any alkali chloride, at a stage when the contents of the kiln have reached a temperature at which the chloride sublimes substantially immediately on to the surface of the articles being fired, and there decompose with the deposition of the corresponding oxide. Irregular distribution of the metallic chloride will produce irregular colouration of the charge material.  The colours may be modified by a prolonged firing in the absence of air by the action of the reducing gases of the kiln.  The actual sublimation of the metallic chloride may be effected outside the kiln, the vapours being blown in through the firing holes, or the material may be preheated outside the kiln and introduced into the kiln before sublimation has taken place. This latter process is specially suitable in the case of chromium chloride.  In an example about 5 kgs. of ferric chloride are used for each 1000 bricks of continental size (25 x 12 x 6.5 cms.).
Patent GB-1016293-A (GB)
Title: Improvements in and relating to air-hydraulic rams
Inventor: PALMER BASIL STODDARD
IPC: F15B11/032
Filed: 1963-06-05
Abstract: 1,016,293. Hydraulic presses. B. S. PALMERS & CO. Ltd. June 5, 1964 [June 5, 1963], No. 22406/63. Heading B5F. [Also in Division F1] An hydraulic press with a compressed-air intensifier comprises a ram 3 slidable in a power cylinder 1, 2, an intensifier piston 24 in a cylinder 19, the piston 24 having a plunger 11 adapted to enter the power cylinder 1, 2, and a free piston 26 in an auxiliary cylinder 14, the free piston 26 being subject to compressed air on one face and acting by its other face on the hydraulic fluid. The press provides a long approach stroke under reduced pressure and increased pressure when the ram 3 contacts the workpiece. In operation by means of a control valve 30, compressed air is admitted simultaneously to the upper sides of pistons 24, 26 through duets 36, 37. The outlet from the underside of piston 24 is restricted so that there is a delay in downward motion of this piston. The space in cylinder 1, 2 below ram 3 is freely open to atmosphere so that the air pressure on the free piston 26 forces hydraulic fluid through holes in a plate 12 into the cylinder 1, 2 (the plunger 11 being in its raised position, Fig. 2, not shown), and through holes 39 in the ram 3. The ram 3 is thus moved down into contact with the workpiece. When the pressure below piston 24 has collapsed sufficiently the plunger 11 moves through a seal 10 and into a recess in the ram 3 thereby applying an increased pressure to the ram 3.
Patent GB-424544-A (GB)
Title: Improvements in stands for syphon bottles and the like
IPC: A47G23/02
Filed: 1934-08-02
Abstract: 424,544. Stands for syphon-bottles. SIMMONDS, P. C., Barnsdale Garage, Barnsdale Road, Maida Vale, London. Aug. 2, 1934, No. 22556. [Class 128] A stand for a syphonbottle comprises a cup a and a flexible spring c having fingers d, which engage the bottle. The mouth of the cup is flared at b to receive drips from the bottle and a circumferential channel f is provided for collecting the liquid around a raised central portion e in the base of the cup.
Patent GB-535651-A (GB)
Title: Improvements in spring-suspension systems for vehicles
IPC: B60G15/02
Filed: 1939-08-05
Abstract: 535,651. Vehicle suspensions. SMITH & SONS (MOTOR ACCESSORIES), Ltd., S., and MEREDITH, F. W. Aug. 5, 1939, No. 22759. [Classes 108 (ii) and 108 (iii) ] A spring suspension comprises a shock absorber coupled to wheel mountings at opposite sides by means whereby the damping effect of a movement of one of the wheels is lessened. As shown, the shock absorber 16 is connected to an arm on a transverse torsion bar 14 arms on which are connected to the unsprung weight. The shock absorber may be hydraulic and include a spring which replaces the springs 11, or a shock absorber having a spring arm may be mounted at each side and connected by a torsion rod.
Patent GB-718332-A (GB)
Title: Improvements in filter plugs for cigarettes and the like and the methods for the production of such plugs
IPC: A24D3/02
Filed: 1952-09-11
Abstract: 718,332. Making filter plugs. KORBER, K., and KOPER, E., [trading as KORBER & CO., KOMM.-GES., K]. Sept. 11, 1952  [Sept. 12, 1951], No. 22813/52. Class 130 Cylindrical filter plugs for cigars. and cigarettes, each comprising a shredded filtering filling of a material such as paper, cellulose or a textile or synthetic substance and impregnated before or after shredding with chemical media eliminating objectionable taste and hindering the shreds from falling from an enclosing wrapper which may be made of one of these materials, are cut from a rod formed as in a normal cigarette-making machine and are subsequently counted or weighed. Fig. 2 shows the manner of feeding the filling, shredded in a normal tobacco cutting machine, from a hopper 1, having a base conveyer 2, to the trough 12 of a cigarette-making machine, via rolls 3, 4, a conveyer 5 co-acting with a magnet 7 to remove ferrous impurities, and a carding roll 8. The formed plugs may be coloured or receive printing, and the wrapper may be chemically treated as to retard glowing.
Patent GB-961480-A (GB)
Title: Color stabilized olefin polymer compositions
IPC: C08K5/053
Filed: 1962-06-14
Abstract: A polymer composition stabilized against colour development comprises a polymer of an olefin, titanium, a phenolic antioxidant and a stabilizing amount of a nonionic surface active agent. The surface active agent is preferably a polyglycol, polyhydric alcohol or a condensation product of an alcohol with ethylene oxide (e.g. polyethylene glycol or glycerol), and of the many specified phenolic antioxidants that used in the example is 4,41-thiobis (6-tBu-m-cresol). Optional ingredients specified are various dialkyl esters of thiodicarboxylic acids. The titanium may be present as a catalyst residue.
Patent GB-533440-A (GB)
Title: Improved method of and means for supporting vertically slidable window sashes and the like
IPC: E05D13/00
Filed: 1939-08-08
Abstract: 533,440. Sashes balanced by pneumatic means. ALDRED, W. Aug. 8, 1939, No. 22907. Convention date, Aug. 8, 1938. [Class 20 (iii)] Window sashes or the like are supported by means of a chamber secured to the window and enclosing a piston, the rod of which is anchored so that a vacuum is formed in the chamber supporting substantially the weight of the sash. To the head 9 of a window frame is secured at 10 one end of a stationary piston rod 11 a piston 12 on the other end working in a closed cylinder 18 secured to the window by brackets 10, 20, and housed in a recess in the sash stile. Sealing and lubricating material 14 is supplied to the outer face of the piston, and a stop 13 prevents the rod from being drawn outwardly too far. A bored cap 23 prevents entrance of dust and provides a guide for the rod. The vacuum formed tends to raise the window. In a modification, the cylinders are housed in a compartment external to the frame stile.
Patent GB-1415236-A (GB)
Title: Method for the post-chlorination of polyvinyl chloride
IPC: C08F8/20
Filed: 1973-05-14
Abstract: 1415236 Chlorinating PVC POZZI FERRANDINA SpA 14 May 1973 [24 May 1972] 22927/73 Heading C3P Granular PVC is chlorinated in a fluidized bed in the presence of a light source and in the presence of a pigment as used in the subsequent compounding in powder or granular form. The pigment, e.g. carbon black or titanium dioxide is added in an amount of 0À001 per hour up to the maximum permissible in the subsequent compounding. Lower fluidization gas speeds may be used and the product is more homogeneously chlorinated than in the absence of pigment.
Patent GB-189242-A (GB)
Title: Process for producing plastic masses from powdered substances
IPC: C08L7/00
Filed: 1921-08-30
Abstract: 189,242. Shaw, A. Herring-, and Peachey, S. J. Aug. 30, 1921. Plastic compositions containing india-rubber.- Gels or self-vulcanizing solutions of india-rubber, balata, or gutta-percha, or mixtures of these substances, prepared as described in Specifications 129,826 and 172,754, are incorporated with finelydivided materials, such as leather, wood flour, cork dust, waste rubber and fibrous materials. The compositions are preferably moulded under pressure. Specification 162,429 is also referred to.
Patent GB-1418418-A (GB)
Title: Apparatus for producing pellets of expanded clay
IPC: C04B20/06
Filed: 1973-05-15
Abstract: 1418418 Expanding clay K R ELIASSON 15 May 1973 [15 May 1972] 22963/73 Heading C1A [Also in Division F4] Pellets of clay are dried in a rotary kiln 2 and passed to a vertically offset rotary burning kiln 4 through a housing 3 from which material may be discharged through an air lock 8 and additional material may be charged through an air lock 9 without excessive heat loss. The burning kiln is heated by a burner 6, and an additional burner 7 may be mounted in the housing 3. The material may pass directly through the housing, or a sieve may be arranged in the housing to withdraw undersized material, and material withdrawn from the housing may be treated to alter the final particle size and fed back through the housing to the burning kiln. The housing may be arranged so that the charging and discharging locks are at the sides.
Patent GB-1199798-A (GB)
Title: A process for preparing Cyanine Dye Intermediates and a process for preparing Cyanine Dyes therefrom
IPC: C09B23/06
Filed: 1968-05-15
Abstract: 1,199,798. Formylmethylene substituted dye intermediates. EASTMAN KODAK CO. 15 May, 1968 [17 May, 1967], No. 22973/68. Heading C2C. [Also in Division C4] Formylmethylene substituted dye intermediates having the general formula wherein R<SP>1</SP> represents alkyl, cycloalkyl, substituted alkyl, alkenyl, aralkyl, aryl or substituted aryl, preferably C 1-4  alkyl, Z<SP>1</SP> represents the non- metallic atoms necessary to complete a heterocyclic nucleus containing 5 or 6 atoms in the heterocyclic ring containing the nitrogen atom to which R 1  is attached and preferably the atoms necessary to complete a desensitizing nucleus and n represents 0 or 1, are prepared by the hydrolysis of compounds of the formula wherein R<SP>2</SP> and R<SP>3</SP> represent alkyl groups preferably methyl and X<SP>1</SP># represents an anion. The compounds II may be prepared by reaction of compounds of the formula wherein X<SP>2</SP># represents an anion, and a complex formed by reaction of an inorganic acid halide preferably phosphoryl chloride and a dimethylformamide preferably dimethylformamide at elevated temperatures and in the presence of a solvent free from basic condensing agents. Examples show the preparation of 3 - ethyl - 2 - formylmethylene - 6 - nitrobenzothiazoline, 3 - ethyl - 2 - formylmethylene - 5 - nitrobenzoselenazoline, 3 - ethyl - 2 - formylmethylene - 6 - nitrobenzoxazoline, 1,3 - diallyl- 2 - - formylmethylene - 1,2 - dihydroimidazo[4,5-b]- quinoxaline, 6 - chloro - 2 - formylmethylene - 1,3 - diphenyl - 1,2 - dihydroimidazo[4,5-b]quinoxaline and 2-formylmethylene-1,3,3-trimethyl- 5-nitroindoline.
Patent GB-1273701-A (GB)
Title: Improvements in guidance of continuous castings through a secondary cooling zone
IPC: B22D11/128
Filed: 1970-05-12
Abstract: 1,273,701. Roller conveyers. CONCAST A.G. 12 May, 1970 [13 May, 1969], No. 23028/70. Heading B8A. [Also in Division B3] To avoid overloading of individual rollers and permit adaptation to shape changes of the cast strand, a roller guideway which defines curved tracks 18, 19 for guiding opposite sides of the strand in an arcuate-path plant, is divided into a number of segments (one segment 13 is here shown) and at least part of one track in at least one of the segments is defined by at least two rollers 14 or 15 which are mounted in a pivotable yoke 22 or 28. The guideway is part of a secondary cooling zone in which it follows cooling-plates (10). In one or more of the segments, the yoke 22 of rollers 14 of the outside track 18 is pivoted on a fixed support 24 and a pivotable yoke 28 of rollers 15 of the inside track 19 is supported at each end by a piston- and-cylinder unit 31, Fig. 3, so that it is displaceable perpendicularly to the strand surface for adjustment and may permit a limited bulging of the strand. Stops 32, 33 limit the pivoting movement of the yokes 28, 22 and the displacement of yoke 28 towards the yoke 22. Other segments (12) have at least three, e.g. five rollers (14, 15) defining part of each track (18, 19), the rollers (15) of the inside track being mounted in a yoke (36) pivotable in slide blocks (38) at each end, displaceable by piston-andcylinder circuits (42). Alternatively, the track (18) may be displaceable instead of the track (19). The three inner rollers (15<SP>1</SP>) are movable radially of the strand and are spring- or fluidloaded. The arrangements may be used on a horizontal run downstream of a withdrawing and straightening unit (5). The rollers 14, 15 in some segments may be jointly displaceable.
Patent GB-953206-A (GB)
Title: Preparation of self-extinguishing epoxide resin polymers
Inventor: SIDLOW RICHARD
IPC: C08G59/14
Filed: 1959-07-04
Abstract: Phenol is dissolved in carbon tetrachloride, and bromine is added to the solution at 5 DEG C. On completion of reaction, HBr and CC14 are removed by heating at reduced pressure. Potassium hydroxide isdissolved in the hot bromophenol and epichlorhydric and carbon tetra chloride added. The mixture is refluxed, cooled and caustic soda added. Added reaction and settling the lower layer is separated, washed and freed from excess epichlorhydrin, water and carbon tetrachloride to yield bromophenylglycidyl ether. The reaction is said to be general for other phenols.ALSO:Cured epoxy resins are rendered self-extinguishing or flame-retardent by brominating their aromatic nuclei with elemental bromine, or by adding to the epoxy resin a bromoaryl- or alkylbromoaryl-glycidyl ether, prior to the curing process. Bromination is effected in a cool aqueous suspension of the resin and may be followed by regeneration with caustic soda of epoxy groups to which HBr was added.  By adding antimony compounds, e.g. antimony oxide or sodium or potassium antimonyl tartrate an adequate self-extinguishing effect may be obtained in the cured resin with less bromine. If transparent or translucent products are required antimony should be added as an organic compound, e.g. antimony sec. butoxide, antimony hexylene glycoxide or a complex of antimony with a hydroxy acid ester.  These compounds react with the resin and become integral parts thereof.  Suitable bromine containing additives to normal epoxy resins are bromophenylglycidyl ether, di- or tri-bromo-phenylglycidyl ethers, bromocresyl or xylyl glycidyl ethers or the diglycidyl ethers of bromo derivatives of diphenylol propane.  In examples (1) a bisphenol-epichlorohydrin condensate is suspended in water and bromine is added to give 8% Br on the resin. The resinous layer is worked, treated with caustic soda to reconstitute epoxy groups and dehydrated. Antimony butoxide is added, butanol stripped off at 140 DEG C. and the cooled resin mixed with diethylene triamine and used to prepare a glass cloth laminate.  (2) is similar finely ground antimony oxide being added in place of antimony butoxide. (3) A mixture of bromophenylglycidyl ether, epoxy resin and diethylene triamine is cured in a mould at 50-60 DEG C. (4) A mixture of bromophenylglycidyl ether, antimony-dibutyl tartrate complex, epoxy resin and diethylene triamine is cured to make a glass cloth laminate.