baber/WOPTO huggingface dataset:
Patent GB-1131831-A (GB)
Title: Improvements relating to automatic focusing apparatus for optical systems
IPC: G03B21/53
Filed: 1966-02-01
Abstract: 1,131,831. Automatic focusing. CONDUCTRON CORP. Feb.1, 1966 [Feb.3, 1965], No.4338/66. Heading G3R. Light from the field of an optical system is diverted into two beams having planes of focus which are respectively in front of and behind a rotating scanning disc which permits light from the beams to reach separate photo-cells the difference between the outputs of which controls the focus of the optical system. In Fig.1, light from a source 13 passes through a slide transparency 11, the image on which is projected by a lens 15 on to a screen 12. Partial reflectors 27, 28 and a mirror 29 divert a portion of the projected light to form two beams having focus planes at 35 and 36 which are at equal distances on either side of a rotating scanning disc 31 when the image is in focus on screen 12. The scanning disc has one or more pinholes, which may form a spiral, so that light corresponding to out-of-focus images at the scanning disc, is passed to photo-multipliers 43, 45 the outputs of which are filtered by high pass filters 41, 42 and rectified at 44, 46 to produce voltages dependent on the positions of the focus planes 35, 36 relative to disc 31. These two voltages, which are thus equal when the image on screen 12 is in focus, are applied to a comparator 48, and any difference serves to operate a motor 16 in the appropriate direction to maintain the screen image in focus by movement of lens 15.
Patent GB-559480-A (GB)
Title: Process for the manufacture of nitro-and amino-benzoic acid esters of tocopherols
IPC: C07D311/72
Filed: 1942-04-02
Abstract: 559,480. Tocopherol esters. HOFFMANNLA ROCHE & CO., AKT.-GES., F. April 2, 1942, No. 4395. Convention date, May 15, 1941. [Class 2 (iii)] Mononitrobenzoic acid esters of dl-tocopherols are prepared by treating crude or pure tocopherols with a mono-nitro-benzoic acid which may be alkylated or not, or with functional derivatives thereof. In an example, dl-α-tocopherol is treated with p-nitro-benzoyl chloride in pyridine solution. Specification 526,884 is referred to. The Specification as open to inspection under Sect. 91 includes also the reduction of the nitro esters to the corresponding amino esters, and an alternative method of preparing the required esters which comprises condensing the corresponding mono esters of hydroquinone with phytol or derivatives thereof. Two additional examples are included which are (1) the nitrobenzoic ester prepared as described in the Specification as accepted is hydrogenated in glacial acetic acid solution in the presence of palladium-charcoal to give p-aminobenzoyldl-α-tocopherol. (3) dl-α-Tocopherol is treated with p-dimethylamino-benzoyl chloride in pyridine solution to give p-dimethyl-aminobenzoyl-dl-tocopherol, which on warming with dimethyl sulphate forms the quaternary methyl sulphate. This subject-matter does not appear in the Specification as accepted.
Patent GB-753611-A (GB)
Title: A process for the reduction of hydrogen damage to ferruginous metals
IPC: C23F11/18
Filed: 1954-02-15
Abstract: 753,611. Preventing corrosion. NAAMLOOZE VENNOOTSCHAP DE BATAAFSCHE PETROLEUM MAATSCHAPPIJ. Feb. 15. 1954 [Feb. 17, 1953], No. 4426/54. Class 123(1) Fissuring and blistering of steel surfaces in contact with hydrocarbons containing an aqueous phase and H 2 S, for example, the internal surfaces of steel pipe lines, &c., carrying sour crude oil or gasoline due to penetration by atomic hydrogen is reduced by maintaining the pH of the aqueous phase above 7, preferably between 8 and 9, and also maintaining therein a concentration of an inorganic polysulphide, whereby an adherent coating of sulphide is formed on the surfaces and hydrogen penetration prevented. The polysulphide, which may be ammonium polysulphide, an alkali metal polysulphide or calcium polysulphide, is injected into the pipe lines, &c., as an aqueous solution. The solution may be prepared by dissolving 387 parts by weight of sodium sulphide and 40 parts of sodium hydroxide in 1,000 parts of water and adding 96 parts of sulphur. Alternatively, the polysulphide is formed in situ by injecting into the pipes an inorganic oxidizing agent such as oxygen, air, chlorine, a chromate or a chlorate in an amount insufficient completely to oxidize the H 2 S, the sulphur formed dissolving in the aqueous alkaline phase and then combining with the sulphide dissolved therein to form the polysulphide. When necessary alkali is also injected to ensure that the pH of the aqueous phase is above 7. The required concentration of polysulphide in a particular case is determined by inserting a probe into the pipe carrying the oil, &c., the probe giving a measure of the hydrogen activity of the oil. The probe consists, Fig. 3, of a thin walled tube 1 containing an axial rod 2, the annular, closed space between the tube and rod communicating through a duct 4 with a pressure gauge 6 with the tube 1 immersed in the oil, regular readings of the increase in pressure due to hydrogen penetration of the tube can be made and the amount of polysulphide or air, &c., injected adjusted accordingly.
Patent GB-451854-A (GB)
Title: Improvements in or relating to light beam signalling or the like systems
IPC: H04B10/11
Filed: 1935-02-12
Abstract: 451,854. Photophones. CADZOW, R., Ardentinny, Argyllshire. Feb. 12, 1935, No. 4438. [Class 40 (v)] A transmitter has a source of light S, a polarizer P, a Kerr cell KC and a projecting lens LST, a receiver has an analyzer A and a photo-electric cell PC for deriving the signals, and the polarizer and analyzer are moved in synchronism. The polarizer and analyzer are crossed Nicol prisms.
Patent GB-796441-A (GB)
Title: Decontamination of acidic solutions
IPC: G21F9/12
Filed: 1956-02-14
Abstract: A method of decontaminating radioactive waste acidic solutions containing plutonium comprises passing the acid solution at a pH of at least 1 through a column of cation exchange resin containing a bivalent ion to change the valence state of the plutonium and cause it to be absorbed by the resin.  In an example the resin is first treated with a solution of a ferrous salt (e.g., sulphate, nitrate, chloride or sulphamate) to convert it from the H+ or Na+ to the FeII form, and the radioactive solution is thereafter passed through it. Preferably the treated solution is further decontaminated by passing it through a column of normal cation exchange resin.
Patent GB-1422704-A (GB)
Title: N,n-bis a-hydroxyalkyl-diamines
IPC: C07D213/36
Filed: 1973-01-30
Abstract: 1422704 Hydroxyamines PLIVA PHARMACEUTICAL & CHEMICAL WORKS 30 Jan 1973 [9 June 1972] 4622/73 Heading C2C Tuberculostatic compounds of formula where R 1 , R 2  and R 3  are hydrogen atoms or C 1-4  alkyl groups and X is a chemical bond, an aliphatic radical having up to 10 carbon atoms or a benzene, cyclohexane, pyridine or piperidine ring are made by chemically reducing a 2,2<SP>1</SP>- bisoxazoline of formula with lithium aluminium hydride. Reference has been directed by the Comptroller to Specification 961,317.
Patent GB-207091-A (GB)
Title: Improvements in rotary electric ignition current distributors or commutators for internal combustion engines and the like
IPC: F02P7/063
Filed: 1923-02-17
Abstract: 207,091. Taylor, T. D. Feb. 17, 1923. Rotary distributors are constructed with a casing A formed of tough tempered glass with radially arranged contacts B embedded in the glass in an internal raceway C and engaged by a rotating copper gauze brush H carried by the shaft E. The widths of the brush H and the contacts B are such that the two sides of the brush wipe over an uninterrupted glass track, electrical contact taking place at the centre portion of the brush. The brush H is secured in a holder at the free end of a lever F pivotally mounted on a lug attached to the sleeve D and controlled by a spring 0. A timing arm H is carried by a clamp held in position on a boss of the casing A by a screw L. The inner portion of the casing A is reduced to fit in a recess M in the engine casing N.
Patent GB-162836-A (GB)
Title: Improvements relating to electric transformers
IPC: H01F27/08
Filed: 1920-02-16
Abstract: 162,836. Hackbridge Cable Co., Ltd., and Kennett, W. C. Feb. 16, 1920. No Patent granted (Sealing fee not paid). Transformers.-A transformer enclosed in a tank is cooled by passing water through a perforated pipe D placed on the upper part of the tank. The water passes through the perforations and descends between the walls C of the tank, which are preferably corrugated, and an outer casing F.
Patent GB-585524-A (GB)
Title: Improvements in and relating to induction type dynamoelectric machines
IPC: H02K49/04
Filed: 1945-02-26
Abstract: 585,524. Induction machines. BRITISH THOMSON -HOUSTON CO., Ltd. Feb. 26, 1945, No. 4737. Convention date, Feb. 28, 1944. [Class 35] [Also in Group XIX] In an induction machine such as a slip coupling or dynamometer, the smooth surfaced member in which eddy currents are induced is of molybdenum iron alloy. In the dynamometer shown, water or other fluid is circulated between headers 22, 23 through axial passages 21 in the eddy current member 15 which is of alloy containing .2- to 1 per cent molybdenum and a similar amount of silicon. The cooling liquid may be re-circulated after re-cooling.
Patent GB-442572-A (GB)
Title: Improvements in and relating to methods of and apparatus for aerial survey
IPC: G03B17/24
Filed: 1934-05-14
Abstract: 442,572. Photographic surveying. HORNER, E., 10, Am Karlsbad, Berlin. May 14, 1934, No. 4804. [Class 98 (i)] In a method for photographically surveying the surface of the earth from aircraft a separate photograph of indications for determining the nadir is taken simultaneously with the photograph of the surface of the earth and thereafter the nadir is determined on the separate photograph and directly transferred to the photograph of the surface of the earth. As shown, 1, 2 are cameras recording the surface of the earth and the nadir indications respectively, coupled so that their axes are parallel. Arranged above the camera 2 are two levels 3, 4 containing air bubbles 3a, 4a moving at different speeds when the levels are tilted. On a glass sheet 5 is a black spot 6 throwing a shadow 8 on the glass surface 9 above the air levels. Gearing 10 driven by a gyroscopic compass maintains the spot 8 in the same place on the plate 9. The plate 5 is carried by a plate 7 having rods 22 carrying shafts 23 carrying gear wheels 24 rolling on toothed sectors 25. The bent ends of rods 26 engage in grooves 27 in curved plates 28 corresponding to the path of the sun. By means of lever 30 and transmission 29 clockwork 21 causes wheels 24 to roll over the sectors 25. A semi-reflecting mirror 13 placed between the levels 3, 4, and the camera 2 reflects an image of the bubbles 3a, 4a and of the' shadow 8 on to a disc 15. A pointer 16 moving above the disc 15 is secured on a linkage coupled with the cameras 1, 2 so that the position of the cameras may be adjusted prior to exposure. A compensating glass disc 13a is provided in the camera 2. In a casing 20 is accommodated the clockwork mechanism 21 provided with a pointer 21a, a magnetic compass 31 provided with a pointer 31a, a barometer 32 provided with a pointer 32a and a counting mechanism 33. Images of these instruments are reflected by the mirror 34 and the annular mirror 35 into the camera 2. As shown in Fig. 4, the photograph obtained in the camera 2 shows images 3b, 4b of the bubbles 3a, 4a, and an image 8b of the shadow 8. The point 12 at the intersection of the line joining the points 3b, 4b with that joining the point 8b to the centre is the nadir and may be directly transferred to the photograph of the surface of the earth obtained in the camera 1 by superimposition of the two photographs. Specifications 146,670, [Class 98 (i)], and 402,890 are referred to.
Patent GB-706956-A (GB)
Title: Improvements in or relating to firearm barrels
IPC: F41A21/04
Filed: 1952-02-25
Abstract: 706,956. Making gun-barrels. SULLIVAN, G. C. Feb. 25, 1952 [March 15, 1951], No. 4870/52. Class 83 (2). [Also in Group XXI] The barrel 10 of a firearm is made of a non- ferrous metal alloy, its bore being plated or coated with a harder material than that of the barrel. As an example, the alloy may contain 85 per cent to 90 per cent aluminium, 1 per cent to 5 per cent magnesium, 3 per cent to 8 per cent zinc, the balance being principally copper, chromium and impurities. The bore may be chromium plated, or a hard coating of amorphous alumina (Al 2 O 3 ) may be formed thereon by an electrochemical process. The chamber 16 and threaded rear end of the barrel may be masked whilst the barrel bore is being heated. The barrel shown is strengthened near the chamber by a sleeve 18; in a modification the chamber is fitted with a liner. The sleeve or the liner may be made of stainless steel. As shown in Fig. 6, the muzzle 17 of the gun is constructed with a recoil-absorbing device comprising a blast chamber 21 having parts 25, the chamber being formed either by undercutting or, as shown, by the provision of a plug 23 in an enlarged muzzle bore.
Patent GB-849028-A (GB)
Title: Ethylene polymerisation
Inventor: PAJACZKOWSKI ANDRZEJ
IPC: C07C409/34
Filed: 1958-02-14
Abstract: Ethylene is polymerised alone or with copolymerisable monomers, e.g. styrene, propylene, isobutylene, pentenes, diethyl fumarate, methyl methacrylate and vinyl acetate, at elevated temperatures in the presence of at least one acyl peroxide, the acyl radical of which contains a branched alkyl or cyclo alkyl group such that at least one side branch or ring is attached to a carbon atom other than the a -carbon atom of the acyl radical. 3,5,5-trimethylhexanoyl, and isovaleryl peroxides, a mixture of naphthenyl peroxides and mixed branched chain aliphatic acyl peroxides may be used at pressures above 500 atmospheres, p  preferably 1000 to 2000, at from 10 DEG  to 250 DEG  C., with optionally chain transfer agents such as hydrogen, carbon tetrachloride, propylene, cyclohexane, ethane and propane. The process may be continuous and additional ethylene introduced to yield a white powdery polyethylene.  Specification 579,884 also is referred to.ALSO:Acyl peroxides, the acyl radical of which contains a branched alkyl or cycloalkyl group such that at least one side branch or ring is attached to a carbon atom other than the a -carbon atom of the acyl radical, e.g., 3, 5, 5 trimethyl hexanoyl peroxide, isovaleryl peroxide, mixed branched-chain aliphatic acyl peroxides and mixed naphthenyl peroxides are prepared by the oxidation of branched alcohols or aldehydes produced by oxo-hydroformylation, or by converting the acid to its chloride and reacting with hydrogen peroxide in the presence of a base.  Examples describe the preparation of the above peroxides by the reaction of hydrogen peroxide with the acyl chloride.  The peroxides are used as catalysts in the polymerisation of ethylene.  Specification 579,884 is referred to.
Patent GB-1177411-A (GB)
Title: Improvements in and relating to Pharmaceutical Compositions
Filed: 1967-02-01
Abstract: 1,177,411. Analgesic compositions. PHILIPS ROXANE Inc. 1 Feb., 1967 [3 Feb., 1966], No. 4928/67. Heading A5B. A pharmaceutical composition having analgesic activity comprises (a) 2-methyl-3-o-tolyl- 4 (3H)-quinazolinone or an acid addition salt thereof formed with a pharmacologically acceptable acid, (b) a salicylic acid derivative of formula I wherein R 1  is hydrogen, alkali metal, methyl, or a substituted aluminium atom of the formula II or OR 1  is replaced by an amino group, and R 2  is -OH, -OCOCH 3 , -OSO 3 H or a group of the formula III in which R 3  is hydrogen or acetyl and (c) an inert excipient. The salicylic acid derivative may be acetylsalicylic acid, acetylsalicylsalicylic acid, salicylsalicylic acid, salicylsulphuric acid, Na or K salicylate, salicylamide or aluminium bis (acetyl) salicylate. The compositions may be administered orally in the form of tablets, capsules, solutions, or suspensions containing conventional excipients.
Patent GB-379628-A (GB)
Title: Improvements in or relating to electric plug and socket couplings
IPC: H01H9/10
Filed: 1932-02-19
Abstract: 379,628. Plug couplings ; fusible cutouts. SCHUSTER, H., 11, Tengstrasse, Munich, Germany. Feb. 19, 1932, No. 4997. Convention date, Feb. 20, 1931. [Class 38 (i).] A base carrying sockets 6, 7 to receive the pins of a plug member and having fuses 19 normally connected in circuit between the live terminals 3, 2 and the sockets 6, 7, is provided with means for isolating the fuses when the cover is removed to render them accessible for replacement. Associated with each fuse is a pair of sockets 8, 9 and 10, 11 each pair being bridged by pins carried by the cover thus completing the connection from the terminals 3, 2 to the fuses. Specification 194,557, [Class 38 (i), Electric couplings &c.], is referred to.
Patent GB-594875-A (GB)
Title: Improvements relating to buildings consisting of a rigid framework and glazing or other sheet covering material carried thereon
IPC: E04C3/44
Filed: 1944-10-23
Abstract: 594,875. Framed buildings. ROBERTS, J. A. Oct. 23, 1944, Nos. 5060/47 and 5061/47. Divided out of 594,822. [Classes 20(i) and 20(iv)] Frame members for buildings, such as glasshouses and garages, which extend up the walls or across the roof, or both, which carry glass, composition board, or like sheets, and which are prefabricated of concrete or like mouldable material, have a section which is of less width at the face directed outwardly of the' building than at the inwardly directed face. Figs. 3 and 4 show respectively sections of members of T and wedge section, rebates 10 for the glass, &c., sheets being formed in the edges of the narrower outwardly-directed faces as described in Specification 594,822. The members are reinforced by rods 18, 19.
Patent GB-1456533-A (GB)
Title: Shower unit partitioning
IPC: A47K3/38
Filed: 1974-02-04
Abstract: 1456533 Shower baths J HUPPE KG 4 Feb 1974 [22 Feb 1973] 05079/74 Heading A4N [ Also in Division E1] A shower bath 2 arranged in the corner of a room is screened by two vertical foldable partitions 4a, 4b or 4g, 4h having rails 5a, 5b on their leading edges mounting magnetic sealing strips 6a, 6b or 6g, 6h. The mating surfaces of the magnets may be complementarily ribbed and grooved. The magnets may be sheathed in a synthetic material which may have flanges 11 which meet to provide a further seal. Rubber or synthetic seals may also be provided on the rails 5 inwardly of the magnets, Fig. 4 (not shown.)
Patent GB-219045-A (GB)
Title: Improvements in or relating to injectors
IPC: F04F5/46
Filed: 1923-02-21
Abstract: 219,045. Brooke, R. G. Feb. 21, 1923. Gifford injectors; overflow arrangements.-An overflow valve 17 is adapted to be opened by inducing fluid pressure acting on a piston 20 secured to the upper end of the valve spindle 17<a> and extending into a chamber 22 that communicates, through a pipe 23, with the steam supply z of the injector, a portion of such steam passing to the chamber 22. The overflow valve is closed by delivery pressure acting on a piston 21 secured to the lower end of the valve spindle and extending into a chamber 27 communicating with the delivery chamber of the injector through a pipe 28. According to the invention, leakage-preventing devices are associated with, or form part of, the pressure-responsive means. In Fig. 1 these devices comprise a valve-like member 31<a> on the piston 20 and a valve-like washer 32 on the piston 21, the latter being flexible so that if the overflow valve closes before the washer engages its seat, Fig. 7<a>, the washer will follow up, under the delivery pressure, and take up the position shown in. Fig. 7<b> In Fig. 2 the washer is replaced by a cup leather packing 33. In modifications a resilient upper face may be fitted to the overflow valve, a valve-like member being rigidly secured to the piston 21, or this valve-like member may be slidingly secured to the piston with an interposed spring, the overflow valve, in this case, not being provided with a resilient face. In Fig. 6 there is associated with the overflow valve 17 a piston 38 working in a cylinder 39 provided with a seat for a spring-pressed valve 40 and communicating with the inducing-fluid pressure. The leakage-preventing device associated with the lower piston 43 comprises a flexible washer 45, the piston being of a cruciform skeleton shape as shown or, in a form not shown, being solid and divided transvemely. Specification 219,041 is referred to.
Patent GB-645349-A (GB)
Title: Electron discharge devices
IPC: H01J1/16
Filed: 1947-02-21
Abstract: 645,349. Thermionic valves. STANDARD TELEPHONES & CABLES, Ltd. Feb. 21, 1947, No. 5136. Convention date, July 24, 1945. [Class 39 (i)] A filament cathode structure for a high frequency electron dis charge device comprises a helically wound filament with terminal connections at either end and a metallic cylinder 24, Fig. 1, preferably of tantalum, connected tc one end of and arranged coaxially inside the helix in such a way as tc increase the series resonance frequency of the structure as measured between the terminals. The cylinder 24 is placed as closely as possible to the turns of the helix. In the form shown a quadra-filar filament is used with the lower ends of the filaments connected individually to leads 12, 13, 18, 19, of which 12 and 13 pass through clearance holes in metal terminal plate 7 and are connected to a similar plate 9, and 18 and 19 are connected to plate 7. The upper ends of the filaments are connected via a castellated metal boss 11a and metal support-rod 11 to lead 10 passing through clearance holes in plates 7, 9 to terminal 3. Plates 7, 9 are connected via leads 6 and 8 to terminals 2 and 4 respectively. The resonant frequency of the structure is the same as the operating frequency of the tube. The cylinder 24 is preferably hollow and is closed at the upper end by a plug or disc, Fig. 2 (not shown), brazed to the boss 11a, but may be secured to lead 11. The various clearance holes in the plates 7, 9 provide blocking condensers so that the individual terminals are all at the same high-frequency potential. The filament structure may have six strands instead of four. The Specification as open to inspection under Sect. 91 states that the cylinder 24 may be welded to the boss 11a. This subject-matter does not appear in the Specification as accepted.
Patent GB-1103060-A (GB)
Title: Tobacco smoke filters
Inventor: TOUEY GEORGE PATRICK
IPC: A24D3/08
Filed: 1967-02-03
Abstract: Encapsulated particles, used in the manufacture of tobacco smoke filters, are produced by the graft polymerization of ethylene on to a substrate of finely divided cellulose particles while slurried in an organic liquid containing also an organo metallic/transition metal catalyst.ALSO:Tobacco smoke filters are made by applying finely divided particles of cellulose encapsulated in a heat softenable polymeric material to a band of filamentary material, compacting the material containing the particles into a rod-like form and heating this material before or after said compacting to soften the polymeric material so that the encapsulated particles become bonded to the filamentary material, and wrapping the rods so formed.  In the examples the cellulose particles are encapsulated by graft polymerizing ethylene thereon.  The encapsulated particles are applied to an opened tow of crimped continuous cellulose acetate filaments by means of an agitated sieve or a fluidized bed.  Other tows specified comprise other cellulose esters, regenerated cellulose, polyamide and polyester filaments.