baber/WOPTO huggingface dataset:
Patent GB-348956-A (GB)
Title: Improvements in or relating to the manufacture of derivatives of 1-benzyl-3-methylisoquinoline
IPC: C07D217/20
Filed: 1930-07-15
Abstract: Compounds of papaverine-like constitution are prepared by dehydrogenating with palladium black at temperatures of 160-220 DEG C.  The dihydroisoquinoline compounds obtained by treating phenylacetic acid or its substitution products with 1-(3<1> : 4<1> methylenedioxy- or dimethoxy-phenyl)-2-aminopropane and effecting ring closure with acid condensing agents.  Examples are given of the dehydrogenation of the following dihydroisoquinoline compounds to the corresponding isoquinoline compounds:--1 - (3<1> : 4<1> - methylenedioxybenzyl) - 3 - methyl-6 : 7-methylenedioxy-3 : 4-dihydroisoquinoline, 1-benzyl-3-methyl-6 : 7-dimethoxy-3 : 4-dihydroisoquinoline, methyl-dihydropapaverine, 1-(3<1> : 4<1> - methylenedioxybenzyl) - 3 - methyl - 6 : 7 - dimethoxy - 3 : 4 - dihydroisoquinoline, 1-(3<1> : 4<1> - di methoxybenzyl) - 3 - methyl - 6 : 7-methylenedioxy3 : 4 - dihydroisoquinoline and 1 - ethylbenzyl - 3-methyl-6 : 7-methylenedioxy-3 : 4-dihydroisoquinoline.ALSO:Derivatives of 1-benzyl-3-methylisoquinoline of papaverine-like constitution are prepared by treating acid amides, obtained by interaction of phenylacetic acid or its substitution products and 1-(31 : 41-methylenedioxy- or dimethoxy-phenyl)-2-aminopropane, with acid condensing agents to effect ring closure, and then dehydrogenating the products by means of palladium black at a temperature of 160-220 DEG  C. According to the examples (1) 1-(31 : 41-methylenedioxyphenyl) - 2 - aminopropane is reacted with homopiperonylic acid and the resulting acid amide, after heating with phosphorus oxychloride in toluene solution, is fused with palladium black, giving 1-(31 : 41-methylenedioxybenzyl) - 3 - methyl - 6 : 7 - methylenedioxy-isoquinoline; (2) 1-(31 : 41-dimethoxyphenyl)-2-aminopropane is heated with phenylacetic acid; the acid amide so produced is then condensed using phosphorus pentoxide in toluene solution and finally dehydrogenated with palladium black to form 1 - benzyl - 3 - methyl - 6 : 7 - dimethoxy - isoquinoline; (3) in a similar manner by a process of condensation followed by dehydrogenation, the acid amide from 1-(31 : 41-dimethoxyphenyl)-2-aminopropane and homoveratric acid is converted into methylpapaverine, the acid amide from 1-(31 : 41-dimethoxyphenyl)-2-aminopropane and homopiperoxylic acid into 1-(31 : 41-methylenedioxybenzyl)-3-methyl-6 : 7-dimethoxy-isoquinoline, the acid amide from 1-(31 : 41-methylenedioxyphenyl)-2-aminopropane and homoveratric acid into 1-(31 : 41-dimethoxybenzyl)-3-methyl-6 : 7-methylenedioxyisoquinoline, and the acid amide from 2-amino-3-(31 : 41-methylenedioxyphenyl)-propane and phenylethylacetic acid into 1-ethylbenzyl-3-methyl-6 : 7-methylenedioxy-isoquinoline.
Patent GB-979042-A (GB)
Title: Improvements in or relating to lasers
IPC: H01S3/093
Filed: 1963-05-29
Abstract: 979,042. Lasers. AMERICAN OPTICAL CO. May 29, 1963 [Aug. 15, 1962; Sept. 10, 1962], No. 21537/63. Heading H3B. A laser rod is optically pumped by a flash tube the light output of which is concentrated on the laser rod by a spherical or part-spherical reflecting surface. A spherical reflector 22 is used in Fig. 3 in which a flash tube 21 and a glass-clad laser core 20 are symmetrically positioned with respect to the centre of the sphere, the flash tube and laser being of equal length and parallel. If a small sphere is used the flash tube is increased in length and width to minimize aberrations. A suitable opening (not shown) aligned with the laser rod is provided for the emitted radiation. A hemispherical reflecting surface 30 is used in Fig. 7, the reflector abutting a plane mirror 31 having holes 33, 36 in which the flash tube 32 and laser 35 are located. The virtual images of the hemispherical reflector, the flash tube and the laser rod are shown in broken lines.
Patent GB-483266-A (GB)
Title: Improvements in motor vehicles for travelling over open country
IPC: B60K17/22
Filed: 1937-08-04
Abstract: 483,266. Motor vehicles. ZAVODY TATRA AKCIOVA SPOLECNOST PRO STAVBU AUTOMOBILU A ZELEZNICNICH VOZU. Aug. 4, 1937, No. 21543. Convention date, Aug. 26, 1936. Addition to 478,867. [Classes 79 (iii) and 79 (iv)] The upwardly inclined chassis tube or frame 6 described in the parent Specification carries at its forward end a housing 1 supported on the front axle and enclosing a radial cylinder engine 8. The clutch and change speed gear may be located in a reduced rear part 4 of the housing. Adjacent to the housing, a casing 5 may enclose bevel or other gearing through which the drive may be transmitted to front and rear axles, the front wheel drive being conveyed by a shaft enclosed in a tubular support 7 connected to the axle casing 2 which in turn is connected to the housing 1. Where the rear wheels only are driven, the parts 5 and 7 are omitted and the axle casing 2 is replaced by connections between the housing 1 and the undriven axle parts. The driver's seat 3 in front of the housing 1 may be foldable or removable to allow access to the engine, the front cover 10 of the housing being detachable.
Patent GB-1423685-A (GB)
Title: Sensitive silver salt photographic materials
IPC: G03C1/43
Filed: 1973-05-07
Abstract: 1423685 Silver salt stabilizers EASTMAN KODAK CO 7 May 1973 [8 May 1972] 21550/73 Heading G2C A silver salt stabilizer comprises a compound containing the grouping which on heating or treatment with alkali e.g. ammonia or an amine, decomposes to give a moiety R 3  S - which stabilizes the photo-sensitive silver salt. The S-carbamoyl compound may be incorporated in a photographic material e.g. in a photosensitive silver salt layer or layer adjacent thereto in an amount ranging from 0À25 moles to 20 moles per mole of the silver salt and/or in a processing composition. The compound stabilizes the image after exposure and development. The photographic material may also contain a silver salt developing agent e.g. alkoxy hydroquinone for 4- hydroxymethyl pyrazolidone and the material may be developed and stabilized by heating or treating with an alkaline development activator. Many S- carbamoyl compounds are given which include S-ethylcarbamoyl-2-mercaptoisobutyric acid, dicyclohexylamine salt; S-ethylcarbamoyl-2- mercaptoethylamine, p-toluene sulphonic acid salt; 3-(ethylcarbamoylthio) propanesulphonic acid, guanidinium salt; S-ethylcarbamoyl-N-acetyl-2- mercapto-ethylamine and copoly [vinyl methyl ether-N-(ethylcarbamoylthioethyl) maleamic acid].
Patent GB-215555-A (GB)
Abstract: 215,555. Parkes, Ltd., Z., Sharpe, L., and Hartland, T. May 1, 1923. Disc mills.-In mills for grinding cereals, coffee, &c. of the type comprising two relatively rotatable discs having teeth disposed tangentially to a common circle and intersected by a number of concentric grooves, the teeth are ratchet-shaped and disposed closely together and the teeth on the two discs are staggered so that those on one disc come above the annular grooves in the other disc and cooperate with the teeth on the other disc. The inner face of each disc 1 is slightly concave and formed with equally-spaced ratchet-sectioned ribs intersected by narrow concentric grooves 4 by which they are divided into a number of tangentially-disposed ratchet-shaped teeth 5, the grooves 4 being of V-section so that the sides of the teeth are inclined. The grinding end of each tooth 5 is steep and short, while the other end is more gradually inclined. The teeth on the two discs are arranged with their grinding ends opposed to one another, and the teeth on the one disc come above the grooves 4 in the other disc. The face of each disc is cut away at its inner periphery 3.
Patent GB-1281276-A (GB)
Title: Method of manufacturing thermoplastic synthetic resin corrugated sheets
IPC: B32B27/00
Filed: 1970-05-05
Abstract: 1281276 Laminates MITSUI PETROCHEMICAL INDUSTRIES Ltd 5 May 1970 [6 May 1969] 21592/70 Heading B5N A method of manufacturing a compound sheet of thermoplastic synthetic resin includes the steps of forwarding and corrugating a first continuous sheet f 1  of thermoplastic synthetic resin to form a core sheet, forwarding a surface sheet f 2 , f 3  of thermoplastic synthetic resin to a position adjacent each face of the core sheet, providing a single thin layer B of a further thermoplastic synthetic resin between each face of the core sheet and the adjacent surface sheet respectively, the further thermoplastic synthetic resin having a softening point at least 10‹ C. lower than the softening point of that one of the materials forming the core and surface sheets which has the lowest softening point, and bonding the surface sheets to the core sheet with heat and pressure such that the further thermoplastic synthetic resin only is softened. The thin layers of the further thermoplastic synthetic resin may be provided on each surface of the core sheet; alternatively, the said thin layers may be provided on the faces of the surface sheets which are to be bonded to the core sheet. The core and surface sheets which may be foamed and may be made by extrusion moulding, casting or calendering may be made from polyvinyl chloride, polyvinylidene chloride, polystyrene, low density polyethylene, high density polyethylene, a copolymer of ethylene and propylene, polypropylene, polybutylene or poly-4-methyl-pentene-1. The further thermoplastic synthetic resin used in the thin thermoplastic layers may be a copolymer of ethylene with a vinyl ester of a saturated monocarboxylic acid, a copolymer of ethylene with an unsaturated carboxylic acid, a copolymer of ethylene with an ester of an unsaturated carboxylic acid, a terpolymer of ethylene with a vinyl ester of a saturated monocarboxylic acid and an unsaturated carboxylic acid or a partial metal salt of a copolymer of ethylene with an unsaturated carboxylic acid, many suitable co-monomers being specified.
Patent GB-451727-A (GB)
Title: Improvements in fireguards
IPC: F24B1/192
Filed: 1935-07-31
Abstract: 451,727. Fire - guards. GOODFELLOW, W. L., 8, Barcheston Road, Cheadle, Cheshire. July 31, 1935, No. 21682. [Class 126] In a combined fire-guard and ash-pit front, of the kind in which the guard B is mounted behind the front A and carries pins or studs b projecting through slots a<3> in the front so that it may be raised and lowered, the guard is retained in its raised position by moving it sideways to cause the pins b to engage in lateral recesses a<4> formed at the top of the slots a<3>. Further recesses a5 may be provided for similarly retaining the guard in an intermediate position. Projections a<7> may be provided on the guard B which engage under the firegrate when the guard is raised and prevent it from falling forward.
Patent GB-939683-A (GB)
Title: Improvements relating to butterfly valves
IPC: F16K1/228
Filed: 1962-06-05
Abstract: 939,683. Clamp-fastenings. M. C. E. HENRION. June 5, 1962 [June 27, 1961], No. 21691/62. Class 44. [Also in Group XXIX] The casing of a butterfly valve has an internal elastic metal-sleeve B, Fig. 5, which is adapted to be tightened around the continuous periphery of the closure member C to effect a seal; when at rest the member C has a slight radial clearance in the sleeve. The member C, which has an uninterrupted periphery, is pivotable about a fixed shaft 5 held by two arms 6 to the valve body; the actuating mechanism is comprised by a manually-operated screwed shaft 7, Fig. I, on which is a nut 11 connected by links 12, a crank 13, a shaft 14, a lever 16, Fig. 6, and two links 17 to the member C, the links 17 and lever 16 forming an articulated parallelogram. An annular groove 18 between the sleeve B. and the body houses one or more steel bands E, Fig. 8, each formed by a strip 22 with members 23 having flanges 24 supporting rollers 27 that engage the elastic seating sleeve. One end of the band is secured to the valve body whilst the other end.is attached to a head 29, Fig. 1, on a shaft 30 to which is keyed an arm 32 co-operable with a lug 33 on the nut 11 so that the last part of the movement of the nut 11 to the left, which has little effect on the position of the closure member C, causes the lug 33 to turn the shaft 30 and tighten the steel band to deform the elastic sleeve B, Fig. 5, into contact with the closure member periphery. In another form the strip 22 may be replaced by a number of spaced cables. For small valves the actuating mechanism may consist of a sector engaging a screw, the sector operating the arm 32. French Specifications 74,986 and 1,220,037 are referred to,
Patent GB-614707-A (GB)
Title: Improvements in induction generators
IPC: H02K17/42
Filed: 1946-07-20
Abstract: 614,707. Telecontrol systems. SPERRY GYROSCOPE CO., Inc. July 20, 1946, No. 21721. Convention date, July 31, 1945. [Class 40 (i)] [Also in Group XXXV] A control circuit for a servomotor makes use of an induction generator (see Group XXXV) which is excited from an A.C. supply and whose output depends on its speed of rotation. The machine comprises a stator carrying an exciting winding 22 and generating winding 23 and a central laminated core 30 leaving an air-gap for a cupshaped conducting rotor 40. The core, which has a flat 35, is adjustable to eliminate errors due to direct induction between the windings and irregularities in the rotor. In use (Fig. 5), the rotor 66 of a receiving selsyn 65 controlled by a transmitter 62, is coupled to the induction generator rotor 40 and to the device 70 which is to be controlled. The output 23 of the generator is arranged to oppose the voltage of the rotor 66 and the resultant is fed into an amplifier 71 which in turn feeds the servomotor 101 driving the device 70. U.S.A. Specification 2,206,920 is referred to.
Patent GB-1432153-A (GB)
Title: Sound reproducing system
IPC: H04S3/02
Filed: 1973-05-08
Abstract: 1432153 Quadraphonics RCA CORPORATION 8 May 1973 [9 May 1972] 21746/73 Heading H4R A spatial sound field is represented by combining the outputs of audio information signal responsive devices to form three channels containing signals respectively proportional to the total sound pressure and related to the cosine and sine of the angular disposition of the apparent sound source from a reference direction. As shown, cardiod microphones 10-16 are connected through mixers 20-24. The microphone response characteristics are of the form that they combine to form A, ACos# and ASin# for storage and/or transmission 26-30 to matrix circuits 48-52 which recover the original sound field via a square or diamond loud-speaker array 32-38. Alternatively, individual sound sources are separately recorded on respective tape tracks and reproduced via magnetic pickups (Fig. 3, not shown) feeding summing amplifiers (124, 132, 134) by way of attenuators and cosine/sine potentiometers so that for each source there exists a component A, ACos# and ASin# in respective channels.
Patent GB-831734-A (GB)
Title: Improvements in or relating to processes for the manufacture of roll-type capacitors
IPC: H01G4/32
Filed: 1957-07-09
Abstract: 831,734. Capacitors. SIEMENS & HALSKE A.G. July 9, 1957 [July 11, 1956], No. 21757/57. Class 37. In a process for the manufacture of wound capacitors having metal layers separated by at least two dielectric layers, a first layer consists of a material which contracts at a predetermined temperature and a second layer consists of material which is plastic at this temperature and the capacitor is heated to this temperature so that contraction of the first layer produces pressure on the second layer causing some of the plastic material of this layer to fill voids within, and at the end faces of, the roll. As described, at least the first dielectric layer 3, Fig. 1, is stretched before winding with the second layer 4 between electrode foils 1, 2, preferably on a solid core. The dielectrics 3, 4 are different grades of polystyrene. After winding, the capacitor is heated in vacuo to about 102‹ C. Pressure may be applied between the end faces during this process. The pressure on the now plastic dielectric 4 causes it to fill the voids at the end faces of the roll, as shown in Fig. 2. It is advantageous to cool slowly in the vapour of a substance, such as benzene, that reduces the solidifying temperature. It is stated that a 0.01 ÁF. capacitor having two 40Á layers of polystyrene may withstand 2000 v. before corona occurs; whereas a similar singledielectric capacitor may withstand only 500 v.
Patent GB-140144-A (GB)
Title: Improvements in and relating to stop-motions for gill-boxes
IPC: D01H13/16
Filed: 1918-12-30
Abstract: 140,144. Illingworth, H. H., Illingworth, A. H., Illingworth, H. H., and Illing- worth, E. H., (trading as Illingworth & Sons, D.), and Clapham, J. E. Dec. 30, 1918. Stop-motions.-A stop-motion for gill-boxes, designed to act when the tension on the sliver is relaxed, comprises a pivoted guide 1 over which the sliver passes, and a constantly oscillated vertical rod 4 with which a cam-surface 3 on the guide 1 is adapted to come into contact when the guide is allowed to fall owing to the slackness of the sliver. The engagement of the rod 4 with the cam-surface 3 causes the rod 6, carrying the rod 4, to be moved to one side against the action of a spring 7, and to carry with it an arm 9 on a depending rod 8 so as to release a spring-controlled pin 10. The upper end of this pin normally engages and prevents movement of a bell-crank lever 13. Oscillation of the lever 13 about its pivot 14 under the action of a spring causes a cam-surface on the lever to operate the usual spring 25 which throws the belt on to the loose pulley. The lever 13 can be re-set by a handle 20, and the pin 10 is raised against the action of its spring by a pivoted handle adapted to engage the lower end of the pin.
Patent GB-980932-A (GB)
Title: Improvements in or relating to fluid tight joints, particularly for sectional control valves
IPC: F15B13/08
Filed: 1962-06-05
Abstract: 980,932. Valves. HYDRAULIC UNIT SPECIALTIES CO. June 5, 1962 [March 30 1962], No. 21769/62. Heading F2V. A number of hydraulic control valves 7, Fig. 3, are sandwiched between inlet and exhaust manifolds 5, 6 containing chambers 10, 12, respectively. Each valve 7 has a slidable spoolclosure member and is shown as being of the parallel circuit double-acting type although other types may be employed. Each spool 16, Fig. 2, when moved from the neutral position shown controls communication of one motor port 18 to the supply chamber 10, Fig. 3, and the other motor port 18, Fig. 2, to the exhaust chamber 12, Fig. 3. Each valve 7, Fig. 2, has a supply header 19 which opens via a check valve 31 to branches 32 leading to the spool bore into which also opens branches 34 from an exhaust header 20. The supply header 19, Fig. 3, passes through each valve 7 and leads to the chamber 10; the exhaust header 20, which is similarly arranged but on the other side of the spool bores, connects with the chamber 12 and includes a duct 25 opening to the chamber 10 via a relief valve 26. The chamber 10, 12 by a zig-zag passage 28 that passes through the centre of each spool bore; if the valves 7 are of the seriesparallel type the branches 32 are supplied from the passage 28 instead of the header 19 in which case the latter is connected to the branches by a lateral branch that houses the check valve 31. Each adjacent face of the valves and manifolds are machined flat or machined areas such as pads 36, 38, Fig. 4, are formed. Leakage between each interface is prevented by an " O "-ring 40 in a groove 41 which defines the outer limit of a shallow depression 42 around an island 43 with a part of the flat face 38 thereon; the island 43 encloses the header 19, 20 and the through passage 28 so that any leakage of fluid from the battery to the header 19 flows via the depression 42 to the exhaust header 20.
Patent GB-792036-A (GB)
Title: New vat dyestuff of the anthraquinone series and process for its manufacture
IPC: C09B5/28
Filed: 1956-07-13
Abstract: In a process for the manufacture of a vat dyestuff by the carbazolization of the linear tetranthrimide of the formula <FORM:0792036/IV (b)/1> with aluminium chloride in presence of a tertiary base free from hydroxy groups, (as described in Specification 693,075), the carbazolization reaction is carried out (a) with at least two parts (preferably 4-6 parts) of aluminium chloride per part of tetranthrimide and a corresponding amount of tertiary base; (b) for a period of least three hours, preferably 5-8 hours; (c) at a temperature of 130-150 DEG  C.  Bases specified are triethylamine, quinoline, acridine, pyridine, and the picolines. Examples describe the process using pyridines as bases, and a dyeing example on cotton (grey) is given.
Patent GB-205262-A (GB)
Title: Improvements in rain and water proof distempers and water paints
IPC: C09D7/61
Filed: 1922-08-10
Abstract: 205,262. Weller, H. O. Aug. 10, 1922. Distempers of the kind comprising casein and slaked lime, have waterproofing qualities conferred by adding slaked lime in excess of that required to combine with the casein, together with a balsam or gum-resin and a fatty acid of high molecular weight. There may also be added alkali fluorides, phosphates, arsenates, sulphites or borates to act as antiseptics &c. The usual extenders and pigments are employed. In an example 8 parts by weight of casein. 2 parts of slaked lime, 40 parts of powdered chalk, 4 parts of lithopone, 4 parts of gum thus, 1 part of stearic acid, and 1 part of sodium carbonate are mixed with 64 parts of water.
Patent GB-685237-A (GB)
Title: Improvements relating to aircraft
Inventor: ALLEN FREDERICK RONALD
IPC: B64D45/00
Filed: 1950-09-05
Abstract: 685,237. Electrically indicating out-of-balance of fuel tanks in aircraft. SIMMONDS AEROCESSORIES, Ltd. Aug. 15, 1951 [Sept. 5, 1950], No. 21854/50. Class 37. [Also in Group XXXIII] In an aircraft having one or more tanks or groups of tanks on each side of a nominal centre of gravity line, electrically operated liquid contents gauges are arranged to provide a current proportional to the moment of the liquid in each tank or group of tanks about the nominal centre of gravity line and to control a differential indicator which is calibrated to show the extent and direction of any out of balance condition. Tanks 1, 2, 3, 4 in the starboard wing and tanks 11, 12, 13, 14 in the port wing are respectively fitted with capacity gauges 6, 7, 8, 9 and 16, 17, 18, 19, the gauges of each group being linked in parallel by leads 10 and 20 and respectively connected to suitable capacity measuring arrangements 21 and 22 which in turn are applied to a differential indicator 23. The size of the condenser in each capacity gauge is such that the change of capacity is proportional to the product of the distance of the centre of gravity of the respective tank from the centre line A-B of the aircraft and the mass of fuel in the tank so that the indicator 23 will give a direct indication of any out of balance moment and may, if desired, be arranged to control pumps so as to effect the transfer or control the rate of flow of liquid from the appropriate tanks when an unbalanced condition occurs. A separate circuit, Fig. 2 (not shown), may be provided to give an indication of any fore-andaft out of balance moment with respect to the centre of gravity line C-D.