baber/WOPTO huggingface dataset:
Patent GB-1039381-A (GB)
Title: Chemical reactions in which hydrogen is a reaction product
IPC: C07C5/327
Filed: 1963-05-14
Abstract: Aliphatic or alicyclic C1 to C20 hydrocarbons are dehydrogenated in a process wherein the hydrogen produced is separated from the gaseous reaction mixture by contacting the reaction mixture with one side of a membrane selectively permeable to hydrogen, the unconverted reactants being further reacted to produce more hydrogen.  There is reference to the dehydrogenation of propane and butane to olefins, isopentane to isoprene and cyclohexane to benzene.ALSO:<PICT:1039381/C1/1> Hydrogen is produced by a gas phase chemical reaction in a process which includes the step of contacting the reaction mixture with one side of a membrane selectively permeable to hydrogen to separate a diffused gaseous hydrogen stream from the undiffused gaseous reaction mixture containing unconverted reactant(s), and further reacting the unconverted reactant(s) to produce more hydrogen.  Examples relate to (1) the dissociation of ammonia at 800-1200 DEG  F. using as catalyst, for example, platinum, palladium, rhodium or ruthenium packed into reaction chamber 49 (Fig. 4), and collecting at 55 hydrogen which has diffused through the walls of diffusion coil 52, made for example of palladium-25% silver alloy; (2) dissociation of ammonia in a multi-stage reaction system, each reactor being operated at 850 DEG  F. and 40 atmospheres, and a hydrogen diffusion unit being provided between each reaction stage (for example as in Fig. 2, not shown); (3) steam reforming of naphtha at 1200 DEG  F. and 14 atmospheres; (4) steam reforming of propane at 1300 DEG  F. and at 1470 DEG  F.  Reactions generally discussed are the dehydrogenation of C1 to C20 hydrocarbons; steam-reforming of C1 to C20 hydrocarbons at 1050 DEG  to 1800 DEG  F. and 5 to 300 atmospheres; the CO shift reaction.
Patent GB-1336189-A (GB)
Title: Manufacture of silicon monocrystals
IPC: C30B25/02
Filed: 1971-06-07
Abstract: 1336189 Silicon SIEMENS AG 7 June 1971 [2 July 1970] 19207/71 Heading C1A Si is deposited on a heated Si substrate from a gas containing an Si cpd. and an organic cpd. in such amount that the deposited Si contains 1À10<SP>17</SP>-2À10<SP>19</SP> atoms c/cm<SP>3</SP>Si. The organic cpd. may be an alkylated silane or halo silane, a halogenated, or low M.W. hydrocarbon. The Si cpd. may be a silane or halosilane.
Patent GB-657633-A (GB)
Title: Improvements relating to circuit arrangements comprising a television transmission tube
Inventor: LUBSZYNSKI HANS GERHARD
IPC: H01J31/38
Filed: 1948-07-17
Abstract: 657,633. Cathode-ray tubes. ELECTRIC & MUSICAL INDUSTRIES, Ltd. July 17, 1948, No. 19219. [Class 39 (i)] A cathode-potential-stabilized television transmitting tube with an electrode 15 close to the scanned side of the target 6 maintained at a positive potential with reference to the equilibrium potential of the target has means for removing from the signal stream returning to the output multiplier 11, those secondary electrons liberated from said electrode 15, comprising a fine mesh electrode 17 preferably in front of the multiplier with a potential intermediate that of the electrode 15 and the target. The low velocity electron stream from gun 2 passes through lift plates 14 and through a stabilizing electrode 15 of fine mesh to target 6, those electrons not contacting the target returning via lift plates 14 to the multiplier. The secondary electrons from electrode 15 are turned back from the multiplier because the potential of electrode 11 is less positive than that of electrode 15. Potentiometers 21, 23, 25 apply the appropriate potentials to the electrodes. The stabilizing electrode 15 is connected to the signal plate 7, but it may be separately energized, or the signal plate may be dispensed with. The target may be a photo-sensitive mosaic screen or one receiving an electron image from a photo cathode. Specifications 657,666 is referred to.
Patent GB-1530768-A (GB)
Title: 2-substituted-4-amino-6,7-dimethoxyquinazolines
IPC: C07D405/14
Filed: 1977-05-06
Abstract: 1530768 2-Substituted 4-amino-6,7-dimethoxyquinazolines SYNTHELABO 6 May 1977 [17 May 1976 24 Aug 1976] 19223/77 Heading C2C Novel compounds of the Formula I wherein A is attached through its nitrogen atom to the quinazoline ring or -N(R 2 )(CH 2 ) n N(R 3 )- in which n is 2, 3 or 4 and R 2  and R 3  independently are hydrogen or C 1-4  alkyl, and R either is phenyl optically substituted with one or more radicals selected from C 1-4  alkyl, C 1-4  alkoxy and methylenedioxy, or is furyl, thienyl or 5- alkylthio - 1,3,4 - oxadiazol - 2 - yl, and pharmaceutically acceptable acid addition salts thereof, may be prepared by (1) reacting a compound II wherein X is halogen with a compound or (2) where A is reacting a compound IV with an acid chloride, RCOCl. N 1  - (2 - Amino - 6,7 - dimethoxy - quinazolinyl- 2) - N 1 ,N 2  - dimethyl - propylenediamine and its hydrochloride are prepared by reacting 4-amino- 2-chloro-6,7-dimethoxy-quinazoline with N 1 - benzyl-N 1 ,N 2 -dimethyl-propylenediamine to form N 1  - (4 - amino - 6,7 - dimethoxy - quinazolinyl - 2) - N 2  - benzyl - N 1 ,N 2  - dimethyl - propylenediamine, which is hydrogenated to the required compound. N - Benzoyl - N - methyl - propylenediamine is prepared by reacting benzoic anhydride with N-methyl-3-amino-propionitrile to form 3-(N- benzoyl - N - methylamino) - propionitrile, which is hydrogenated to the required compound. Pharmaceutical compositions of the compounds I with the usual excipients show anti-hypertensive activity when administered orally, parenterally or rectally.
Patent GB-357572-A (GB)
Title: Improvements in and relating to amplifying systems
IPC: H03F3/02
Filed: 1930-06-24
Abstract: 357,572. Valve circuits. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Hull, A. W. ; 1435, Lowell Road, Schenectady, New York, U.S.A.) June 24, 1930, No. 19260. Convention date, June 24, 1929. [Class 40 (v).] An amplifier for use with a light-sensitive device 10 contains a thermionic discharge device with its anode 4 supplied from an alternating-current source 5, and means, such as a condenser 7, connected to the source to neutralize the grid-plate capacity C3. The discharge device contains an inert gas at a pressure sufficient to support an arc discharge at the impressed voltage. The photoelectric cell has its cathode connected to the grid 3 and its anode to a point on the source 5 of the same phase as the anode 4. The neutralizing- condenser, which is so chosen as to over-neutralize, is connected between the grid and a point on the source with a voltage phase, relative to the cathode 2, opposite to that of the anode 4. The circuit forms a bridge, the arms of which are the capacity 7, the cell 10, and the two parts 12, 13 of the alternating current source, the amplifying-valve being connected to diagonal points. Variable activation of the cell shifts the phase of the grid voltage with respect to the anode voltage to initiate an arc of intensity and duration dependent on the activation of the cell, Figs. 2 to 5 (not shown). The photo-electric cell may be replaced by a selenium cell, and the discharge device by a highvacuum valve. To reduce the current in response to illumination, the positions of the cell and the neutralizing condenser are reversed. The Specification as open to inspection under Sect. 91 (3) (a) comprises also supplying the discharge tube from a direct-current source, and substituting other apparatus for the cell. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1241372-A (GB)
Title: Improved synthetic lubricants
IPC: C10N10/16
Filed: 1969-04-16
Abstract: 1,241,372. Synthetic lubricant. LUBRIZOL CORP. 16 April, 1969 [26, June, 1968], No. 19500/69. Heading C5F. A lubricant comprises a major amount of a carboxylic acid ester and a minor amount of a composition comprising (a) 5-30 parts by wt. of an acylated alkylene polyamine or hydroxysubstituted alkylene polyamine having at least one acyl, acyloxy or acylimidoyl radical, containing at least 54 aliphatic carbon atoms, attached directly to a nitrogen atom; (b) 5-15 parts of basic alkaline earth metal sulphonate, (c) 5-70 parts of a compound wherein each of R and R<SP>1</SP> is an alkyl, cycloaltyl, aralkyl or alkaryl radical and M is the equivalent of a Gp. I metal, Gp. II metal, Al, Sn, Co, Pb, Mo, Mn or Ni; (d) 0-20 parts of a basic alkaline earth metal salt of an acidic phosphosulphurized aliphatic or aromatic hydrocarbon of M.W. at least 500; (e) 0-35 parts of an ester of a C 50 + hydrocarbon substituted succinic acid; (f) 0-60 parts of a basic alkaline earth metal salt of an alkyl phenol sulphide; the lubricant containing no more than 15% by wt. of mineral oil. Preferred components are (a) alkylene polyamine substituted by an acyl; acyloxy or acylimidoyl radical derived from a hydrocarbon-substituted succinic acid; (b) a calcium sulphonate; (c) zinc dialkyl phosphorodithioate; (d) a barium salt; (e) an acidic pentaerythritol ester of substituted succinic acid; (f) a calcium salt. Synthetic base fluids used in the examples include diisodecyl azelate, isodecylpelargonate, di-(2-ethylhexyl) ester of linoleic acid dimer, di-(tridecyl) phthalate and mixtures thereof. A polyalkylmethacrylate VI improver may also be present.
Patent GB-1033248-A (GB)
Title: Improvements in or relating to liquid pressure intensifiers
Inventor: HENRY HOWARTH PADGETT
IPC: F15B11/032
Filed: 1964-05-11
Abstract: 1,033,248. Hydraulic intensifiers. E. MATHEWS ENGINEERING CO., Ltd. April 23, 1965 [May 11, 1964], No. 19557/64. Heading F1P. The smaller diameter end 18 of a stepped intensifier cylinder 11 is connected to a ram cylinder 10 and to an hydraulic fluid supply source which is also connected to the larger end 13 of the intensifier cylinder through a plunger valve which is opened against an adjustable spring 37 by the pressure build-up in the supply line; the valve plunger 28 being stopped whereby the total fluid pressure thereon is greater when open than when closed and the fluid inlet to the ram cylinder being closed prior to intensification by the end of the smaller diameter portion of the intensifier piston.
Patent GB-354500-A (GB)
Title: Improvements in or relating to catalytic preparations and their applications
IPC: B01J27/00
Filed: 1930-06-27
Abstract: An improved catalyst, e.g. for such oxidation reactions as the p contact process for sulphuric acid, which comprises a catalyst such as platinum on a carrier of magnesium sulphate, is obtained by the addition to the carrier of a small proportion e.g. 1 per cent, of a sulphate of an alkaline-earth metal, trivalent iron, thorium, tantalum, or cerium or mixtures of two or more such sulphates.  The magnesium sulphate should preferably be free from alkali. Crystalline magnesium sulphate and the promoting sulphate e.g. ferric sulphate, are first heated together to dryness.  The product is ground to a fine powder and sufficient water is added to form a thin paste.  A further quantity of crystalline magnesium sulphate is added, and the heating process repeated.  The mass formed is broken up into granules and screened, or the ground granules may be briquetted or pelletted with or without a suitable binder or lubricant.  The product, which contains approximately 1 per cent of anhydrous ferric sulphate, is then platinized in known manner. Examples are given detailing the preparation of platinum catalysts and their use in the manufacture of sulphur trioxide.
Patent GB-869670-A (GB)
Title: Improvements in or relating to cartons and blanks therefor
Inventor: FOYLE JOHN ROLAND
IPC: B65D5/36
Filed: 1958-06-19
Abstract: 869,670. Cartons. BOXFOLDIA Ltd. June 19, 1959 [June 19, 1958], No. 19579/58. Class 18. A carton blank having a base 10 and walls 11-14 of which the walls 11 and 13 are connected to wings 15 for superposition on and attachment to the walls 12 and 14 during assembly is provided with gussets formed by fold lines 22 to allow the carton to collapse flat after such attachment and with a lid 16 connected to the wall 11 along a fold line 18 which is shorter than the lid due to recesses 19 therein. Alternatively, slits may be provided along the line of the fold 18 ; and the wings 15 need not be tapered as shown in Fig. 2. The fold lines 22 are each inclined to the base panel edge 23 at an angle slightly less than 45 degrees thus causing each wing edge 27 to overlap slightly with the walls 12 and 14 which they overlie so that after glueing the edges 27 register accurately with fold lines 25. In another embodiment, the side flaps 26 are recessed along their free edges except adjacent the recesses 19.
Patent GB-257689-A (GB)
Title: Improvements in or relating to the manufacture of ammonia
IPC: C01C1/04
Filed: 1925-06-09
Abstract: 257,689. Blackburn, H. W., and Thomas, W. June 9, 1925. Ammonia, catalytic production of from nitrogen and hydrogen.-Ammonia is produced by passing a hot mixture of nitrogen and steam over iron or the lower oxides and hydroxides of iron or nickel. The steam is present in substantial excess of the quantity theoretically equivalent to the nitrogen, preferably in the ratio of 4:1 by weight. When iron is employed as catalyst, the presence of nickel exercises a promoting effect. Advantageously, the process is effected at a slightly increased pressure of, for example, two atmospheres. The temperature conditions vary with the catalyst employed and the gaseous reaction mixture may be preheated. According to the example, a mixture of superheated steam and nitrogen in the proportions of 4:1 by weight is passed at a pressure of nearly two atmospheres through an iron chamber containing heated nickelous hydroxide and the ammonia produced is absorbed in dilute sulphuric acid.
Patent GB-1497324-A (GB)
Title: 4,4'-thio-bis(alkylphenol)/formaldehyde condensates and a process for their production
IPC: C08L23/00
Filed: 1975-05-09
Abstract: 1497324 4,4<SP>1</SP> - Thio - bis(alkylphenol)/ formaldehyde condensates; antioxidants RUHRCHEMIE AG 9 May 1975 [17 May 1974] 19685/75 Headings C3R and C3P 4,41 - Thio - bis(alkylphenol)formaldehyde condensates having a molecular weight of from 1000-4000 are prepared by reacting a 4,41-thiobis(alkylphenol) containing a free hydrogen atom in an ortho-position with respect to each phenolic OH group with formaldehyde in the presence of a protonic acid as catalyst, and optionally a solvent, the molar ratio of the said bisphenol to HCHO being from 1 : 0À5 to 1 : 10 and the molar ratio of the protonic acid to HCHO being from 1 : 0À01 to 1 : 10, and the molar ratio of the said bisphenol to the protonic acid preferably being from 1 : 0À1 to 1 : 10. The bisphenol preferably has the formula wherein R 1  and R<SP>1</SP> 1  are branched alkyl groups of up to 8 carbon atoms and R 2  and R<SP>1</SP> 2  are hydrogen or a linear or branched alkyl group of up to 8 carbon atoms. Suitable solvents are aliphatic, cycloaliphatic or aromatic hydrocarbons having boiling points of from 70- 150‹ C. Suitable catalysts are HCl, H 3 PO 4 , p-toluene sulphonic acid and mixtures of HCl and oxalic acid, or H 2 SO 4 and boric acid. The condensates can be used as antioxidants or stabilizers for olefin polymers, particularly polyethylene. In the examples condensates prepared by reacting 4,4<SP>1</SP>-thio bis(3-methyl-6-tbutylphenol) with aqueous HCHO in the presence of HCl and optionally oxalic acid as catalyst and either benzene or a mixture of aliphatic hydrocarbons boiling at 150‹ C. as solvent, are used to stabilize polyethylene.
Patent GB-317599-A (GB)
Title: Improvements relating to air release valves for tramway and other compressed air brake systems
IPC: B60T13/36
Filed: 1928-07-06
Abstract: 317,599. Electro-Mechanical Brake Co., Ltd., and Smith, S. July 6, 1928. Fluid pressure. - A release valve for compressed air brakes comprises a piston valve b slidable in a casing a and controlling a branch passage i and an exhaust passage d. To apply the brakes pressure air admitted by the main valve to the pipe c seats the piston on the part f and permits the air to flow through the passage and pipe g to the brake cylinders. When the pipe c is opened to release the brakes, the piston moves up and the brake cylinders exhaust through the passage d.
Patent GB-637817-A (GB)
Title: Photographic film holding device
IPC: G03D13/12
Filed: 1947-07-23
Abstract: 637,817. Photographic film holders for use in processing. PAKO CORPORATION. July 23, 1947, No. 19729. Convention date, July 22, 1942. [Class 98 (ii)] The holder comprises two spaced vertical guides secured together by a top transverse member and having a similar bottom member slidable thereon, each member having arms pivoted thereto adjacent the guides to turn about horizcrnta] axes, each arm carrying a film-holding means so that a film is held thereby in tension by the bottom member and can expand laterally due to the pivoted arms. As shown, the holder comprises a rectangular frame 15 supported by bent ends 15c and having a bar 16 fixed thereto and a bar 20 vertically slidable thereon. Arms 17 have slots 17a engaging pivot pins 18 on the bars and carry headed pins 21, Fig. 6, which perforate and hold the film 22. The latter is stretched verticallv by the weight of the bar 20, and the pivoted arms 17 permit of lateral stretching, the amount of pivoting being limited by stop surfaces 17b on the arms. The Specification as open to inspection under Sect. 91 describes also a modification in which each bar carries a plurality of fixed pins and is designed to accommodate several films. A clip to hold a film is described comprising a metal strip bent to form arms 40a, 40b, Fig. 11 (Cancelled), the arm 40a bearing two filmengaging pins 41 (one only shown) opposite protuberances 40e having apertures through which the pins may pass. In operation the film is inserted in the clip and positioned by means of a lug 40i. The arms are then pressed together manually whereby the pins 41 perforate and hold the pin, an upturned portion 40bb preventing the respective pin from entering the finger. Lugs 40g, 40k permit mounting of the clip on a rod. This subjectmatter does not appear in the Specification as accepted.
Patent GB-308755-A (GB)
Title: Improvements in and relating to the manufacture of synthetic rubber
IPC: C08F36/04
Filed: 1928-07-06
Abstract: 308,755. I. G. Farbenindustrie Akt.- Ges. March 31, 1929, [Convention date]. Addition to 283,841. Caoutchouc, synthetic.-The process for the manufacture of synthetic rubbers described in the parent Specification in which polymerization of an appropriate hydrocarbon is effected in an atmosphere of hydrogen, nitrogen or carbon dioxide, by means of an alkali metal in the presence of an organic hydroxy compound or ether, is modified by working the process in the presence of ethyl ether, diphenyl ether or an olefine oxide or peroxide. In examples, (1) 1M kg. of isoprene. 20 kg. of ethyl ether and 2 kg. of sodium wire are left to stand in a carbon dioxide atmosphere, (2) 200 kg. of isoprene and 5 kg. of diphenyl ether or 5 kg. of ethylene oxide are heated at 45‹ C. with 3 kg. of sodium wire in a nitrogen atmosphere. The Specification as open to inspection under Sect. 91 (3) (a.) describes three particular examples of carrying out the process of the parent Specification. Example (1) refers to erythrene instead of isoprene and nitrogen instead of the carbon dioxide referred to in Example (1) above. In example (2) 100 kg. of erythrene or dimethyl butadiene are polymerized in the presence of 2 kg. of ethyl cellulose and 1.5 kg. of finely divided sodium or sodium wire, in a nitrogen atmosphere at fi0‹ C. with shaking. Example (3) refers to dimethyl ether instead of the diphenyl ether referred to in Example (2) above. The polymerization may also be effected in the presence of substitution products of organic .hydroxy-compounds or ethers, or of other compounds containing ether-like combined oxygen. This subject-matter does not appear in the Specification as accepted.
Patent GB-279393-A (GB)
IPC: A47J43/28
Filed: 1927-07-25
Abstract: 279,393. Kingman, R. B. Oct. 19, 1926, [Convention date]. Indicators directly operated by hand for displaying variable information. - Pointers 3 are pivotally mounted opposite items marked on a plate 1, ears 7 being pressed out of the plate to receive the parts 5 of the pointers and to provide stops 8, 9 limiting the movement of the pointers towards the plate. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the modification shown in Fig. 10 (Cancelled), in which one or both of the ears 7 are bent inwards as at 10<1> to prevent accidental movement of the pointer, and, while the stops 8, 9 may be used, bent parts 11 may be formed to prevent the pointer approaching the plate too closely. Instead of bending the ears, however, pressed up portions may serve to lock the pointers. It also comprises the further modification shown in Fig. 15 (Cancelled), spring fingers 14 being pressed out of the plate 1 to provide combined pivoting and locking means, the bent parts 11 also being used. This subject-matter does not appear in the Specification as accepted.
Patent GB-706642-A (GB)
Title: Improved sifting apparatus
IPC: F24B15/00
Filed: 1951-08-22
Abstract: 706,642. Sifting apparatus. WALKER, S. R. July 17, 1952 [Aug. 22, 1951], No. 19771/51. Class 117 A cinder or like sifter comprises a rotatable cylindrical sieve c constructed from wire mesh and provided at its top and bottom with rings d, d' respectively, and strengthened at its sides by four vertical wires e secured to the ring d at diametrically opposite points. At their lower ends the wires e are bent around the underside of the ring d<SP>1</SP> and secured to a collar f which carries a spindle g supporting the sieve c in a bearing b attached to the bottom of the cylindrical outer container a. The sieve c is supported at its upper end by four spacing members j formed as loops in the ends of the wires e and in this way an annular passage is formed around the sieve cage which extends into the lower space i. The lid k of the container a is provided with a flange m which forms a gudde for rotating the lid on the container and the handle n of the lid is provided with vertically depending portions o which project through the lid and enter dimetrically opposed loops j whereby the sieve c may be 'rotated. During the sifting operation the sieve is in a tilted position, handles p and q enabling the sieve to be lifted and tilted and handle q forming a support for the container in the tilted position. The sieve cage may be of other than circular cross-section.
Patent GB-1058897-A (GB)
Title: Apparatus for maintaining the tension in a wound elongate material
IPC: B65H18/10
Filed: 1965-05-11
Abstract: 1,058,897. Feeding webs. TELDIX LUFTFAHRT-ASRUSTUNGS G.m.b.H. May 11. 1965 [May 13, 1964], No. 19791/65. Heading B6B. [Also in Divisions G1 and G5] In a vehicle position indicator the tension in a map I wound from one reel to another is maintained by a cord 18 wound from one helically grooved cone-pulley to another, a stressed torsion spring 16 being provided in the drive from one conepulley to a reel. Reduction gears 7 and 8 are provided in drives between the cone-pulleys and the reels. As the cone-pulleys rotate in the same direction, the variations in the lever arms effective at the conepulleys are opposed to each other. The double arrow 6 represents the movement of an indicator. When a vehicle moves a specific distance, a navigation computer applies a voltage Ux proportional to this distance. Motor 23 is therefore driven to move the map I below the indicator (not illustrated). Movement of the map is measured by a pinwheel 29 which moves the slider 26 of a potentiometer 27. When the voltage Up from the potentiometer balances the voltage Ux, the motor 23 stops, and the map has moved the required specific distance. To prevent the cord 18 from chafing, one of the cone-pulleys may be mounted for axial movement relative to the other. This movement is achieved with a guide member 49, Fig. 2 (not shown) or 65, Figs. 3 to 5 (not shown), which guide member is mounted for rectilinear movement in screw connection with both cone-pulleys.