baber/WOPTO huggingface dataset:
Patent GB-898587-A (GB)
Title: Protoverine esters
IPC: C07D491/20
Filed: 1960-11-30
Abstract: The invention comprises certain esters of protoverine, viz. the 3,15-di-isobutyrate, 3,15-di - isobutyrate - 6 - acetate, 6, 15 - di-isobutyrate - 3, 7 - diacetate, 3, 6, 15 - tri - isobutyrate, 6, 7 - diacetate - 15 - (1) - 21 - methylbutyrate (desatrine), and the 3-p-nitrobenzoate, 3-p-toluenesulphonate and 3-(41-nitrocaproate) of desatrine, together with processes for the preparation of protoverine esters bearing at least an acetate group at positions 6 and 7 or at least an isobutyrate group in position 15, in which the 6,7-disubstituted protoverine esters are formed by periodate oxidation of protoverarine B, subsequent mild alkaline hydrolysis of the reaction product, and optionally esterification of said reaction product by treatment with acyl halide, and the 15-substituted protoverine esters are formed by reaction of protoverine with acyl halide and, if desired, subsequent alcoholysis to remove undesired ester substituents.  Detailed examples illustrate the invention.ALSO:Insecticidal compositions particularly effective against house flies comprise certain protoverine esters, viz. the 3,15-di-isobutyrate, 3,15 - di - isobutyrate - 6 - acetate, 6,15 - di - isoburyrate - 3,7 - diacetate, 3,6,15 - tri - isobutyrate, 6,7 - diacetate - 15 - (l) - 21 - methylbutyrate (desatrine) and the 3-p-nitrobenzoate, 3 - p - toluene sulphonate, and 3 - (41 - nitrocaproate) of desatrine, in conjunction with a standard carrier or diluent, including dusts and liquids such as kerosene.
Patent GB-1480512-A (GB)
Title: Electrophotographic recording material
IPC: G03G5/00
Filed: 1974-09-20
Abstract: 1480512 Electro-photographic materials PHILIPS GLOEILAMPENFABRIEKEN NV 20 Sept 1974 [25 Sept 1973] 41168/74 Heading G2C [Also in Division C3]  An electro-photographic material contains a layer with a charge-transfer complex of polyvinyl carbazole and a dye of formula wherein R is one or more alkyl or alkoxy groups and/or one or more halogen atoms and Y is -S- or -NH-, the molar ratio of dye to monomer unit of polyvinyl carbazole being 0À25 - 1À75 : 1. The material is made by dissolving the dye and polymer in a solvent and coating the solution on a metal foil.
Patent GB-928503-A (GB)
Title: Liquefaction of nitrogen while regasifying liquid methane
Inventor: FRENCH MICHAEL JOSEPH
IPC: F25J3/04
Filed: 1961-11-17
Abstract: 928,503. Cold separation of air. CONCH INTERNATIONAL METHANE Ltd. Nov. 17, 1961, No. 41190/61. Class 8(2). Product liquid nitrogen is obtained by compressing at 10, 12 and 17 separated gaseous nitrogen withdrawn from an air rectification column through a duct 9, liquefying the compressed nitrogen in a heat exchanger 19 travened by liquid methane admitted through a duct 33 and a valve 34 and which is thereby vaporized, expanding the liquid nitrogen at valves 20, 24 and 28 into chambers 21, 25 and 29, passing a portion of the low pressure liquid nitrogen through a duct 32 into the column 6 to serve as reflux and withdrawing the remainder as product through a duct 31; feed air for column 6 being cooled by heat exchange at 2 with pressurized liquid methane withdrawn from duct 33 upstream of the valve 34 and the so-vaporized methane then being warmed in exchangers 40, 44 and expanded in turbines 42, 45, Cold feed air is further cooled in the reboiler 3 of the column 6 and is fed through a duct 4 to the column where it is joined by an auxiliary supply of air in a duct 5 having been cooled in an exchanger 7 traversed by oxygen product gas. A portion of nitrogen gas leaving compressor 12 is passed through a reboiler coil 15 and the so liquefied nitrogen is added to the liquid nitrogen leaving chamber 21.
Patent GB-1192794-A (GB)
Title: Non-Aging Low Carbon Steel Sheets
IPC: C21D8/04
Filed: 1967-09-08
Abstract: 1,192,794. Deep-drawing steel; heat treatment. NIPPON KOKAN K.K. Sept. 8, 1967 [Sept. 10, 1966], No.41194/67. Headings C7A and C7D. A substantially non-ageing steel is obtained by vacuum degassing a low-carbon rimmed steel thereby reducing the carbon content to less than 0À02%, adding a carbide former in such amount that the solute carbon at the temperature of the later annealing step is less than 0À002%, forming the steel into cold-rolled sheets and annealing the latter at 700‹ C. to 950‹ C., optionally followed by a temper-rolling step. Prior to addition of the carbide former, such as titanium, vanadium, niobium, tantalum, zirconium, hafnium or thorium the steel may be deoxidized, for example with aluminium; the carbide former may also be selected to have a denitrifying effect, e.g. titanium, or a separate denitrifying addition may be made at the same time.
Patent GB-1200228-A (GB)
Title: Chain saw
Inventor: WOLF JEROME L
IPC: B27B33/14
Filed: 1967-09-11
Abstract: 1,200,228. Sawing. J. L. WOLF. 11 Sept., 1967, No. 41385/67. Heading B5L. A chain saw comprises cutter teeth 10 extending from link portions 10c and raker teeth 4 extending from link portions 13a, the latter link portions being interconnected by links 5 having portions 5b adapted to engage the chain guide bar 1. The portions 5b provided in order to provent rotation of either a cutter or raker tooth about its pivot pin 6. The teeth are staggered as shown in Fig. 4 thereby allowing the chips to pass behind the raker teeth and thereby prevent a build-up. In a modification, a pair of raker teeth (28, Fig. 5) are carried by a single link portion, the teeth facing opposite directions in order that the chain may be reversed.
Patent GB-895579-A (GB)
Title: Improvements in or relating to induction heating apparatus
Inventor: MARTIN DAVID ERIC
IPC: H05B6/04
Filed: 1958-12-23
Abstract: 895,579. Valve oscillating circuits; R.F. couplings. GENERAL ELECTRIC CO. Ltd. Dec. 16, 1959 [Dec. 3, 1958], No. 41483/58. Classes 40(6) and 40(7).  An induction heater comprises a high frequency oscillator which has in series with' a tuned tank circuit a variable inductance whereby to vary the voltage across the tank circuit and hence the kVA available from it. The circuit is essentially a Colpitts oscillator, with feedback over capacitors 6, 7, modified to include the variable inductor 8 connected in series with the tuned tank circuit 2, the tank circuit being inductively coupled to an output circuit by a coil 5.
Patent GB-1080106-A (GB)
Title: Method of and apparatus for detecting lines on the surface of a travelling sheet
IPC: C03B33/037
Filed: 1965-09-30
Abstract: 1,080,106. Detecting marks photo-electrically. COMPAGNIE DE SAINT-GOBAIN. Sept. 30, 1965 [Sept. 30, 1964], No.41571/65. Heading G2J. [Also in Division G1] Lines on the surface of a travelling sheet (e. g. scores for subsequently breaking a sheet of glass) are illuminated by projecting the image of a rectilinear filament on to the surface of the sheet so as to coincide with the line as it passes a particular position, diffused light being collected from substantially the whole illuminated portion of the line and directed on to a light sensitive device which emits a signal when the line passes. The image of the filament may be focused by a planocylindrical lens and the diffused light led to the photo-cell by a light-transmitting filament.
Patent GB-1321098-A (GB)
Title: Process for enabling fully continuous operation in finishing treatment in a treatment bath especially of moving webs
IPC: D06P1/00
Filed: 1970-09-03
Abstract: 1321098 Web or skein treatment ARTOS DR ING MEIER-WINDHORST KG 3 Sept 1970 [3 Sept 1969] 42127/70 Heading D1L In a process for ensuring fully continuous operation in finishing treatment of widthguided webs of material or material supplied in skein in a treatment bath, the treatment fluid is introduced directly before the entry of the material into the treatment bath, after exit of the material piece from the treatment bath the treatment fluid is removed from the bath, the last part of the treatment fluid is directly followed by a cleaning fluid. The process enables lengths of different materials, joined by intermediate runners, to be treated by different fluids in an automated fashion, as each length of material has associated with it a predetermined amount of treatment fluid and each treatment is followed by a cleaning stage while a runner passes through the bath before the next length of material and associated treatment fluid enter the bath.
Patent GB-1039818-A (GB)
Title: Improvements in stationary electromagnetic induction apparatus
IPC: H01F27/12
Filed: 1963-10-28
Abstract: 1,039,818. Transformers. COMPAGNIE GENERALE D'ELECTRICITE. Oct. 28, 1963 [Nov. 3, 1962], No. 42465/63. Heading H1T. Cooling fluid in a transformer is distributed to the core structure 14, Fig. 2, and to individual coils 1, 2 in tubular insulating casings 3, 4, 5 from a box 16 which receives the fluid from a duct 21, opening into an aperture 28 in the transformer casing, via a tube 22 which at one end is adapted to slide in an aperture 27 in the box 16, opposite the aperture 28, and which at the other end is provided with a flange 23 forced around the aperture 28 by one or more springs 25 acting between the box and the flange. The tube 22 may alternatively be inverted, and slide in the aperture 28. The sliding coupling may be prefabricated, and may include a sealing ring 24, a closely fitting collar 26 which may be bolted or welded to the box 16, and a retaining projection 37. The insulating casings 3, 4, 5 are closed at their lower end by an insulating disc 6, and cooling liquid is dispersed by baffles 15 if disc coils are used. The liquid is admitted by apertures 18, 19, to the coils, and by aperture 20 to the core. The coil assembly including a clamp 9 and jacks 10 (Fig. 1, not shown) coupled by a tie-rod 13 to a lower frame 12 may be prefabricated and lowered through the top of an otherwise closed tank on to the core inside, the height of the coil on the core being adjustable by bolts 30, and the sliding tube providing a simple means of completing and maintaining the fluid path over the range of adjustment. An assembly including both the core and the coils, Fig. 3 (not shown), may be prefabricated and lowered into the casing 130.
Patent GB-971237-A (GB)
Title: Improvements in the treatment of napped acrylonitrile polymer fabrics
IPC: D06M13/335
Filed: 1962-11-13
Abstract: Matting, shedding and pilling of the nap of woven non-woven and knitted fabrics of synthetic fibres comprising at least 80% by weight of acrylonitrile after subjection to normal laundering and wearing conditions is reduced by treating them with an aqueous solution of aniline or aniline acetate, hydrochloride, sulphate or hydrobromide. When aniline is used it may first be dissolved in ethanol, methanol, butanol or propanol and then dissolved in water.  The aqueous solution which may also contain water repellents, e.g. "Phobotex" (Registered Trade Mark), antistatic agents, e.g. polyamine resins such as diethylene triamine cross-linked with polyethylene glycol diiodide or an epoxy resin, catalysts e.g. zinc nitrate, and colloidal silicon, may be applied to the fabric by padding or spraying and the fabric may then be dried and cured by heating to 240 DEG -300 DEG F. for 5-60 minutes.  The fibres may be made from polyacrylonitrile, from copolymers containing at least 80% by weight of acrylonitrile copolymerized with another monomer containing <FORM:0971237/D1-D2/1> linkages or from blends of polyacrylonitrile or a copolymer thereof containing 80-99% by weight of acrylonitrile and 1-20% by weight of another copolymerizable monomer with 2-50% by weight of the blend of a copolymer of 10-70% by weight of acrylonitrile and 30-90% by weight of another copolymerizable monomer, the blend having an overall polymerized acrylonitrile content of at least 80% by weight.  Suitable copolymerizable monomers are: acrylic, a -chloroacrylic and methacrylic acids, methyl, ethyl, butyl, methoxymethyl and b -chloroethyl methacrylate, acrylate and a -chloroacrylate, vinylchloride, fluoride and bromide, vinylidene chloride, 1-chloro-1-bromo-ethylene, methacrylonitrile, acrylamide, methacrylamide, a -chloroacrylamide, methylvinyl ketone, vinylacetate, chloroacetate, propionate and stearate, N-vinylphthalimide, N-vinylsuccinimide, methylene maloinic esters, itaconic acid and esters thereof, N-vinyl carbazole, vinylfurane, alkyl vinyl esters, vinylsulphonic acid, ethylene-a ,b -dicarboxylic acids, diethylcitraconate and mesaconate, styrene, vinylnaphthalene, vinyl pyridines and alkyl substituted vinyl pyridines, 1-vinylimidazole and alkylsubstituted-1-vinyl imidazoles.  The process is suitable for the treatment of high pile polyacrylonitrile fabrics to prevent matting, pilling and shedding.
Patent GB-1511560-A (GB)
Title: Methods of modifying or repairing printed circuits
IPC: H05K3/36
Filed: 1976-10-18
Abstract: 1511560 Printed circuits INTERNATIONAL COMPUTERS Ltd 18 Oct 1976 [22 Oct 1975] 43250/75 Heading H1R A microwired printed circuit assembly comprises an insulant substrate 2 of, e.g. polyimide on which conductors 3, 4, 5, 6 of, e.g. gold are formed, e.g. by deposition and etching. The circuit is modified or repaired by inserting and bonding to selected conductors a connection member 7 comprising a conductive track 8 overlapping an insulant layer 9 of equivalent width; the projecting ends 10 of the track being, e.g. thermocompression bonded, e.g. to conductors 3, 6 of the assembly and isolated from conductors 4, 5. Subsurface conductors 11 are interconnected with conductors 3, 4, 5, 6 through holes, and the members 7 link tracks 3, 6 to replace faulty connections over tracks 11. Member 7 is formed by depositing electrolessly a conductive track of, e.g. chromium overlaid with gold on polyimide, subdividing it and etching the latter to expose ends. Alternatively (Fig. 3, not shown) plural tracks of similar dimensions to tracks 8 may be deposited on polyimide sheet of the same thickness as layer 9, the ends may be exposed by etching, and the sheet subdivided between the tracks. The insulant layer may be deposited on preformed conductive tracks.
Patent GB-1091051-A (GB)
Title: Improvements in and relating to the treatment of palladium and palladium-base alloys
Inventor: HOLLISTER RALPH GEORGE
IPC: C22C5/00
Filed: 1963-11-04
Abstract: Discontinuous yielding in Pd metal or alloy containing Si impurity is prevented or reduced by adding to the metal or alloy an element which forms a compound with Si more readily than does Pd.  The element is preferably Ca, Be, Mg, Sr, Ba, Ti, Zr or Re and may be wrapped in Pd foil and added to the molten metal or alloy prior to casting.
Patent GB-1056120-A (GB)
Title: Automatic diaphram-setting device
IPC: G03B7/085
Filed: 1964-10-26
Abstract: 1,056,120. Photographic cameras. BIVIATOR S.A. Oct. 26, 1964 [Nov. 2, 1963] No.43476/64. Heading G2A. A camera has an automatic diaphragm-setting device comprising a diaphragm ring 1 operated by a reversible motor 2 connected to the output terminals of a bridge circuit consisting of circuits 27, 28, 29 and 30 each comprising a switching transistor 31 and an amplifying transistor 32. The circuits 27 to 30 are connected to the outputs of photo-electric cells 10, 11, 12 and 13 which, when the diaphragm is at its correct setting and the camera is being operated by the closing of all the switches, are balanced by circuits 14, 15, 16 and 17. If the scene illumination changes a potential is applied to the transistor circuits by the photo-electric cells. The transistor circuits are so connected to the cells that two diagonally opposite ones such as 27 and 30 become conducting whilst the other two cannot conduct whereby the battery 26 applies a potential to the motor 2. This rotates the diaphragm ring 1 and also moves a diaphragm plate 9 over the cells 10 to 13 to alter the potential therefrom until the balance of the bridge circuit is restored. An embodiment includes a circuit whereby the batteries can be charged by connection to an A. C. or D. C. supply. In a modification the diaphragm 9 is omitted and the motor 2 controls potentiometers 20 in the circuits 14 to 17 to restore the balance of the bridge.
Patent GB-1478376-A (GB)
Title: Vacuum moulding process and apparatus for use therein
IPC: B29C51/00
Filed: 1974-10-08
Abstract: 1478376 Moulding foamed plastics DYNAMIT NOBEL AG 8 Oct 1974 [8 Oct 1973] 43635/74 Heading B5A An article of foamed thermoplastics material, e.g. packaging plates, Fig. 2, not shown, is produced by placing a heated sheet 1a in a moulding tool 1 so that it divides the cavity into two chambers, and then reducing the pressure on each side of the sheet so that it expands and conforms to the cavity wall profile. A stack of sheets, or strips, can be placed in the tool 1, and during expansion can be united together. The sheet can be formed from ethylene homopolymers and copolymers, vinyl chloride homopolymers or copolymers, or polypropylene.
Patent GB-1260784-A (GB)
Title: Charging apparatus for electrophotographic copying machines
Inventor: KOBAYASHI AKIRA
IPC: G03G15/02
Filed: 1970-09-16
Abstract: 1,260,784. Corona discharge apparatus. IWATSU ELECTRIC CO. Ltd. Sept.16, 1970 [April 14, 1970 (3)], No. 44320/70. Heading G2H. Corona discharge wires 28A, 28B are contained in a receptacle 21 across which stretch wires 30 to guide a sheet to be charged, the receptacle having a removable floor 33 to allow replacement of the discharge wires 28A, B. Floor 33 may be retained by the resilience of the receptacle sides 24A, 24B. Wires 28A, 28B are tungsten, wires 30 are nylon, floor 33 and sides 24A, B are aluminium, iron or ferrous alloy and end members 22, 23 are synthetic resin. The receptacle has projections and recesses 36 to 39 for mating with a similar charging device (121), Fig.5A (not shown), sheets to be charged being fed into a slot defined between the devices.
Patent GB-1336055-A (GB)
Title: Carbon friction disc
IPC: F16D55/40
Filed: 1971-09-23
Abstract: 1336055 Full-face multi-disc brakes; carbon brake discs BENDIX CORP 23 Sept 1971 [26 Oct 1970] 44320/71 Heading F2E [Also in Division C1] A carbon brake disc for a multiple-interleaveddisc full-face disc brake comprises an annular carbon body 42, one peripheral surface of which carries components e.g. notches 56 for cooperating with parts of the brake and the other peripheral surface of which carries attached thereto a high-fibre-density woven carbon belt 58 to inhibit oxidation caused by heat generated during frictional engagement. The disc shown in Fig. 3 is a stator disc, splined in Fig. 1 to a torque-absorbing sleeve 34. The brake is applied by a pressure plate 44 attached to pistons 20 of fluid-pressure motors 16 (only one shown). A block of insulating material 22 is located between piston 20 and pressure plate 44 to protect the hydraulic brake fluid from heat generated during braking.  Preferably the coefficients of thermal expansion of belt 58 and body 42 are matched.
Patent GB-1089729-A (GB)
Title: Process for manufacturing preserved fruits
IPC: A23B7/08
Filed: 1966-10-07
Abstract: Fruits, especially bananas, are preserved by steeping until they are saturated in a solution comprising calcium and ammonium p carbonates, and preferably also citric acid and alum, and then crystallizing with sugar syrup in the usual manner.
Patent GB-1132102-A (GB)
Title: Improvements relating to electrical bus bar systems
Inventor: NICHOLLS WILFRID
IPC: H02G5/00
Filed: 1965-01-23
Abstract: 1,132,102. Connecting bus-bar systems; earth continuity couplings. MAXAM SWITCHGEAR Ltd. 24 Jan., 1966 [23 Jan., 1965], No. 44959/67. Divided out of 1,132,101. Headings H2C and H2E. The subject matter of this Specification is disclosed in the Parent Specification 1,132,101, but the claims relate to the provision of continuity across the joining section of the bus-bars.
Patent GB-1279710-A (GB)
Title: Process and apparatus for gas chromatography
IPC: G01N30/56
Filed: 1969-09-11
Abstract: 1279710 Packing for gas chromatography columns. PITTSBURGH CORNING CORP 11 Sept 1969 [11 Sept 1968] 44963/69 Heading B1X [Also in Division C1] Packing for gas chromatography columns comprises glass nodules having a core of closed cells and a continuous outer skin which has a different composition to to the core and contains a partially embedded active pulverulent material, preferably aluminium-oxide hydrate, the nodules having an outer coating of a liquid substrate, such as a heavy paraffin grease or a high molecular weight polyethylene glycol condensate. Columns comprising such packings are suitable for separating hydrocarbon mixtures, halohydrocarbon mixtures, alcohol mixtures, and mixtures of polar and nonpolar organic substances. The packing may be silanized before use with dichlorodimethylsilane. The production of the glass nodules is detailed (see Division C1).
Patent GB-1528320-A (GB)
Title: High-voltage monitoring arrangements
IPC: H01F27/06
Filed: 1976-10-29
Abstract: 1528320 Transformers SIEMENS AG 29 Oct 1976 [28 Nov 1975] 44992/76 Heading HIT A plurality of transformers of the type described in Specification 1,527,938 are disposed in a cylindrical housing.
Patent GB-1154698-A (GB)
Title: Apparatus and Method for Circuit Control from Stored Data.
IPC: G06K7/04
Filed: 1966-10-10
Abstract: 1,154,698. Sensing cards. ADDRESSOGRAPH MULTIGRAPH CORP. 10 Oct., 1966 [18 Feb., 1966], No. 45235/66. Heading G4M. A manually-inserted credit card 10 bearing coded embossments 15 is sensed in motion by a reading head 40 comprising a spacer member 42 urged by a spring 46 into contact with a plain surface 11 of the card 10 and carrying a plurality of flexible conductors 52 which are thereby positioned at a distance above surface 11 which is less than the height of embossments 15, those conductors 52 which engage embossments 15 being flexed into sliding contact with associated conductors 54. Conductors 52 may be formed as an integral, comb-like structure having a common supply lead, conductors 54 being separate. The pressure exerted by head 40 on the card 10 may be varied by engaging the end of spring 46 in different holes 48. A switch may be actuated on insertion of card 10 to energize a motor coupled to a tyred wheel for driving the card 10 past read head 40. One or more other switches may be actuated by the card so as to energize the reading head only when selected coded areas are passing beneath conductors 52. Guides 24 assist in holding card 10 flat.