baber/WOPTO huggingface dataset:
Patent GB-648840-A (GB)
Title: Improvements in or relating to the bonding of surfaces containing polyvinyl resins
IPC: C09J127/06
Filed: 1947-07-29
Abstract: A coating-composition comprises an organic solvent solution of a vinyl copolymer containing 80-90 per cent by weight of combined vinyl chloride, 19.7-7 per cent of combined vinyl acetate, and 0.3-3.0 per cent of maleic or similar alpha, beta-olefinic unsaturated dicarboxylic acid, which may be produced as described in U.S.A. Specification 2,329,456.  The solvent may be methyl ethyl ketone, methyl isobutyl ketone, or acetone.  Plasticizers or high-boiling solvents such as diethylene glycol monoethyl ether acetate or dioctyl phthalate, and dyes or pigments, may be added.ALSO:An adhesive for sticking paper to vinyl resin surfaces that have been prepared by application of a vinyl copolymer size (see Group IV (a)), comprises wheat flour, glucose, minor amounts of beta naphthol and ammonium alum, and water.
Patent GB-660585-A (GB)
Title: Improvements relating to platen printing machines
IPC: B41F1/12
Filed: 1948-07-31
Abstract: 660,585. Platen printing machines; inking- apparatus. LOTUS, Ltd., and ADAMS, W. Aug. 2, 1949 [July 31, 1948], No. 20416/48.. Class 100 (ii). In a machine for marking blanks with patterns to be followed in subsequent stitching operations, wherein a swinging horizontal platen 19 is adapted to move on parallel linkages 18 between the printing table 11 and an inking pad 34, the pad 34 is attached to a disc 14 which is rotated with an intermittent and variable motion to present fresh inking portions of the pad to the platen. Two links 18 at each side of the platen are secured to shafts 171, 172 rotatable in the frame 10, the shaft 172 being rocked in a clockwise direction, to actuate the platen, by means of a treadle, link 261, and a clutch A, against the action of two tension springs 21. When the platen has been moved to mark a blank on the table 11, the clutch A is released automatically, the springs 21 swing the platen over into contact with the pad 34, and then restore the platen to the central position shown. A collar on the drive shaft 172 oscillates, through a link 30, a lever 31 pivoted about a spindle 121 carrying the disc 14 for the inking pad 34. A spring-pressed pawl on the lever 31 engages frictionally the edge of a disc 33 secured to the spindle 121, whereby the inking pad is rotated intermittently. The degree of rotation of the disc 14 varies due to lost motion in the drive thereto, so that the same part of the inking pad 34 is not presented to the platen 19. The clutch comprises two spaced discs 241, Fig. 5, freely mounted on the shaft 172, and a spring-pressed pivoted pawl 27. adapted to engage a notch 282 in a disc 28 secured to the shaft 172. The treadle-actuated link 261 is pivoted to the discs 241. On depression of the link 261, the pawl 27 rotates the disc 28 and shaft 172 clockwise until a cam portion 251 on an extension of the link 261 engages a heel 271 on the pawl 27 to release the latter from the disc 28, whereupon the springs 21 return the platen as described above. The treadle mechanism can be rendered inoperative by maintaining the treadle permanently depressed or disconnecting the link 261, and the platen operated by a hand lever 36 rigidly secured thereto. Specifications 646,811 and 660,627 are referred to.
Patent GB-646761-A (GB)
Title: Production of aryldimethylchlorosilanes
IPC: C07F7/12
Filed: 1948-08-03
Abstract: Tolyldimethylchlorosilane is prepared by reacting toluene and trimethylchlorosilane at a temperature between 300 DEG  and 500 DEG C. in mixture with an aluminium or boron halide, at least a portion of the reactants being in the condensed phase.  The halides preferably employed are aluminium chloride or fluoride, or boron chloride or fluoride.  If desired, hydrogen fluoride or chloride may be added in addition.
Patent GB-893053-A (GB)
Title: Improvements in machining devices making use of intermittent electrical discharges
IPC: B23H1/00
Filed: 1960-06-10
Abstract: 893,053. Spark erosion. CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE. June 10, 1960 [June 11, 1959], No. 20586/60. Class 83 (4). A spark erosion apparatus for forming a hole in a workpiece 2 has a follower 11 slidable in the electrode 1 and adapted to bear against the bottom of the hole for indicating the wear of the electrode. This enables the depth x of the hole to be determined. The electrode 1 is moved downwardly as described in Specification 800,450. A pinion 10 drives an axially captive nut 8 screwed on the electrode holder 5 and thus the angular position of the pinion indicates the axial position of the electrode. Follower 11 has a point 12 made of diamond, sapphire, quartz or a plastic and a rack 13 meshing with a pinion 14 mounted on the electrode. This rotation of the pinion 14 indicates the movement of the follower relatively to the tool. The angular movements of pinions 10, 14 are transmitted through selsyns 15, 16 to a differential indicator 17 which gives the depth of penetration x. The follower need only contact the bottom of the hole when the depth is to be measured. The workpiece and electrode are immersed in a bath of oil 3 and oil is circulated through holes 18 in the electrode.
Patent GB-412778-A (GB)
Title: A process for the complete or almost complete recovery of the compression energy in the production of nitric acid under pressure
IPC: C01B21/26
Filed: 1933-07-21
Abstract: <PICT:0412778/III/1> In the production of nitric acid by the oxidation of ammonia with or without the employment of pressure, the subsequent absorption of the resulting gases under pressure and the utilization of the compression energy of the unabsorbed residual gases to assist in the necessary compression, a part of the heat of the combustion gases formed in the ammonia oxidiser is utilized for preheating the mixture of ammonia and air while the residual gases to be passed into the expansion engine leave the absorption stage at normal temperature, are preliminarily heated by the exhaust gases leaving the expansion engine and are subsequently heated prior to expansion by a portion of the heat of the ammonia combustion.  The process may be modified by effecting the preheating the compressed residual gases entirely by means of the hot nitrogen oxides and preheating the mixture of ammonia and air by means of the hot exhaust gases.  Air is compressed to say 8 atmospheres in a piston engine 1, passes through an oil filter 11, is supplied with liquid ammonia by a pump 2 which is coupled to the engine 1 and is preheated in a heat-exchanger 3 to about 330 DEG  C.  The ammonia-air mixture then enters the oxidation element 4 and the gases containing oxides of nitrogen leave at a temperature of 850 DEG  C.  They pass through a heat-exchanger 5 their temperature falling to 425 DEG  C. and the heat exchanger 3 in which they preheat the ammonia air mixture their temperature falling to 204 DEG  C.  The nitrogen oxides are then cooled in a condenser 6, and oxidized and absorbed in water in absorbers 7, the residual gases leaving an alkaline absorber 8 at 25 DEG  C.  The residual gases are preheated to 250 DEG  C. in a heat-exchanger 9 and are heated to 780 DEG  C. in the heat-exchanger 5.  The residual gases finally yield their energy of compression to the engine 1, the exhaust gases issuing at 373 DEG  C. and yielding their remaining heat to the heat-exchanger 9.  The engine 1 may be a piston engine working in a four-stroke cycle, the expansion of the residual gases and the compression of the air mixture being carried out alternately in the same cylinder, the cylinder thereby being kept cool.  Alternatively, a gas action turbine may be employed, the fall of temperature of the gases being already effected on issuing from the stationary nozzles which may be made of heat resisting material.
Patent GB-1000843-A (GB)
Title: Improvements in or relating to methods of and apparatus for measuring the period of a nuclear reactor
Inventor: PASSE JEAN
IPC: G01T1/30
Filed: 1964-05-19
Abstract: 1,000,843. Detecting neutrons. COMMISSARIAT A L'ENERGIE ATOMIQUE. May 19, 1964 [May 17, 1963], No. 20688/64. Headings G6C and G6P. A method of measuring the period of a nuclear reactor comprises integrating the value of a current produced by an ionization chamber adjacent the core during two equal and successive intervals of time, and relating the two results. This method gives a more accurate period value than the more normal method of calculating it from the time required to double the ionization current, since by summing the currents, the effects of random irregularities in the rate of increase of flux are reduced. An ionization chamber 3 passes current to an amplifier 2, whose output is switched for equal succassive time periods by a time-base generator 1 to integrators 4 and 5. A digital voltmeter 6 gives a reading proportional to the reactor period. In an alternative apparatus (Fig. 3, shown) the ionization current passes directly to a current-pulse frequency converter, the pulses being counted during equal successive periods by integrators.
Patent GB-188375-A (GB)
Title: Improvements in or connected with photographic apparatus
IPC: G03B15/00
Filed: 1921-08-04
Abstract: 188,375. Elliott, A. J., and Stringer, H. B. Aug. 4, 1921. Aeronautical photographs.-A camera spring- mounting of the type giving parallel motion, applicable particularly to cameras on aircraft, is adapted to be adjusted in accordance with the inclination of the aircraft or other support so that movement of the camera due to vibration of the support is in a substantially vertical direction, or is directed along the axis of the camera. The device may be carried on a tiltable frame, and the camera may be mounted on the device in an auxiliary carrier which may permit it to be rotated freely round its optical axis. In the form shown in Fig. 1, the camera, (not shown), is secured with its axis vertical by turn buttons 12 to an open carrier 11 mounted on equal bellcrank levers 18, 19 turning on axes 22, 25 in an open frame 24 pivotally mounted at 34 on an open base frame 35 secured by bolts 43 to the aircraft. The levers are maintained in parallel relation by a connecting rod 21. The left-hand lever is keyed on its shaft 22, to which is also keyed at each end a lever 26 having a slot 31 with notches 32 any one of which may be engaged with a helical spring 27 adjustably secured at 30 to the frame 24. This resilient means is so adjusted that, when the camera is placed in position, the arms 18 of the bell crank levers lie parallel to the plane of the frame 24. The frame 24 may be rocked about its pivots 34 by a screw adjusting- device 36. The camera may be supported in an auxiliary carrier or cradle which in one form ccmprises a carrier ring 47, Fig. 4, rotatable in a boss 48 in an open base-board 46 slotted at 15 to receive the turn buttons 12. The Provisional Specification also describes an auxiliary carrier which may be tilted in a plane at right angles to the plane of tilt of the main carrier, and is particularly applicable to cameras which are directed laterally.
Patent GB-255659-A (GB)
Title: Improvements relating to hubs for wheels and their manufacture
IPC: B60B27/02
Filed: 1925-08-19
Abstract: 255,659. Webb & Co., Ltd., H. C., and Atkinson, G. L. Aug. 19, 1925. Hubs. - Flange or disc members, such as a sprocket wheel c, spoke flange d', or brake drum c, are riveted &c. to flanges b<2> formed on cupped elements b which are pressed on, or otherwise secured, to the ends of a tubular hub a. In the construction shown, the brake drum c has an integral spoke flange c<1>.
Patent GB-1141527-A (GB)
Title: Encapsulated radioactive light sources
IPC: H01J65/08
Filed: 1966-05-11
Abstract: 1,141,527. Uses of luminescence. UNITED STATES RADIUM CORP. (EUROPE). 11 May, 1966 [12 May, 1965], No. 20820/66. Heading C4S. In combination with a device to be illuminated, at least one replaceable radio-active light source removably secured to said device comprises a protective housing 11, e.g. a metal channel, or a hollow plastic (e.g. polymethylmethacrylate) or glass tube (transparent or translucent); a hollow sealed glass element 10 (which may also be spherical for instance) embedded within said housing and containing a phosphor (e.g. ZnS, CdS, ZnCdS or CdWO 4 ) and a radio-active beta-ray emitting gas (e.g. T or Kr-85). The glass element may be embedded in transparent elastomeric potting material within the protective housing or the potting material may itself form the housing. Cushions 13 of a rapid curing elastomeric potting material assist location of element 10 in assembly. In Figs. 6 to 10 (not shown), one or two light sources with metal channel housings are incorporated in plastic signs, the light being directed transverse to, or against, the surface incorporating the legend. A single light source spanning a central reflective light barrier dividing the plastic body, may be used to illuminate legends on the two opposing surfaces. Applications to aircraft and space capsule control panels, life raft instruction indicators, and escape doors are instanced.
Patent GB-423044-A (GB)
Title: Improvements in or relating to thermionic oscillation generators
IPC: H03B7/04
Filed: 1933-07-24
Abstract: 423,044. Valve generating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London, and MOULLIN, E. B., 189, Morrell Avenue, Oxford. July 24, 1933, Nos. 20869 and 24615. [Class 40 (v)] A dynatron oscillator is operated for starting purposes with a positive potential on its plate or on an auxiliary outer grid, and a negative potential is substituted therefor after the oscillation has started. An auxiliary grid adjacent the cathode may be back-coupled to the plate circuit in such sense that its voltage varies in phase with the plate voltage, thus cutting off electron emission during negative half-cycles of plate voltage and increasing efficiency. As shown in Fig. 1, the dynatron circuit comprises a triode valve V with high positive potential on its grid 1 and with a tuned oscillatory circuit 5, 6 connected to its plate. For starting, a switch 7, 8 is arranged to connect part of the battery 13 in the plate circuit, so as to render the anode positive. After starting, the switch is thrown over so as to connect the whole battery with its negative side towards the plate. Oscillations continue to be produced and with higher efficiency. A resistance may be connected in shunt to the condenser 12 across the switch contacts, and may be disconnected when switching is completed. When the valve has an auxiliary outer grid, the positive starting potential may be applied to this grid, and the anode may be continuously negative. After starting, the grid is made negative by connecting it to the anode. Or both may be positive for starting, and switched to negative for running. In Fig. 2, starting is effected by a switch 16 which in the position shown allows the battery 13 to charge a condenser 15. When the switch 16 is thrown to contact 17 the charged condenser momentarily causes the circuit 5, 6 to oscillate, and the positive peak of plate voltage thus caused starts up the dynatron, which continues to oscillate although its mean plate voltage is held negative by the switch 20 on battery contact 21. After starting, the switch 20 is moved to contact 22 to apply the full negative voltage of the battery 13 to the plate. In order to increase efficiency by cutting off the filament emission during portions of the cycle, an inner grid 27, Fig. 4, is given a negative bias by a battery 30 and is backcoupled by a coil 31 to the coil of the tuned plate circuit 5, 6. The coupling is such that grid voltage varies in the same phase as plate voltage. According to the first Provisional Specification, the voltage on the main grid is switched off, during negative half-cycles of plate voltage, by an auxiliary valve. This valve may have its plate-cathode path connected in the grid circuit of the main valve, and its grid circuit coupled to the main oscillatory circuit.
Patent GB-354029-A (GB)
Title: Improvements in and connected with conveyors or elevators, for handling iron or other ores, road metals, heavy and abrasive substances or such like
IPC: B65G17/08
Filed: 1930-07-11
Abstract: 354,029. endless-chain conveyers. JOHNSON, A., Manchester Wire Works, Smedley Road, and MILLS, S., Kylemore, Calverley Avenue, Burnage Hall Road, both in Manchester. July 11, 1930, No. 20978. [Class 78 (i).] A conveying belt is made of plain metal units e with staggered bent-over portions e<1> through which are passed spindles f provided with flanged rollers g which travel on upper and lower parallel longitudinal supports c. The belt is driven by polygonal rollers b<1>, the flat faces of which have depressions to receive the connections of the plates. The sides of the framework are composed of lengths of wrought iron plates a spaced apart by transverse baulks of timber which coincide with brackets d<1>. Inclined side plates i are supported by the brackets d<1> and carry brass strips l which bear on the belt. The plates may have upstanding projections to facilitate conveyance on inclines.
Patent GB-597368-A (GB)
Title: Improved polymers and copolymers of acrylonitrile
IPC: C08F20/44
Filed: 1945-08-17
Abstract: Acrylonitrile is polymerized in dispersion, solution or bulk, alone or with not more than 10 per cent of monoethylinic compounds in the presence of monomeric dithioglycidal.  Ethylenic compounds specified are acrylic, alpha-chlor acrylic and methacrylic acids, methyl, ethyl, butyl, octyl, 2-nitro-2-methylpropyl methoxymethyl, beta-chlorethyl methacrylates, acrylates and alpha-chlor acrylates, vinyl and vinylidene chlorides, fluorides and bromides, 1-chloro-1-bromoethylene, 1-fluoro-1-chloroethylene, meth- and alpha-chlor-acrylonitriles, acrylamide, meth- and alpha-chloracrylamide, or monoalkyl substitution products thereof, methyl vinyl and methyl isopropenyl ketones, vinyl acetate, chloracetate, propionate and stearate, N-vinylphthalimide, N-vinyl-succinimide, N-vinyl tetrahydro-phthalimide, methylenemalonic esters, itaconic acid and esters, trifluorochloroethylene, N-vinylcarbazole, 2-vinylpyridine, vinylfurane, butyl vinyl sulphone, ethyl vinyl sulphone, ethylene, propylene, isobutylene, butene-1 and -2, alkyl vinyl ethers, vinylsulphonic acid, diethyl fumarate, maleate, citraconate and mesaconate, styrene and vinyl naphthalene. In aqueous systems, as catalysts, ammonium or alkali metal perdisulphates, hydrogen peroxide, perborates, perphosphates, percarbonates and peracetates and as adjuvants, sodium bisulphite, sulphite, thiosulphite or hydrosulphite may be used.  In non-aqueous systems, as catalysts, benzoyl, acetyl benzoyl, lauroyl, succinyl, dibutyryl, and diethyl peroxides, or tertiary butyl hydroperoxide, and as media, acetone, benzene, dioxan, tertiary butanol, methanol, dimethyl formamide or tetramethylene sulphone may be used.  Fibres may be spun or films cast from the modified polyacrylonitrile in dimethylformamide or tetramethylene sulphone.  Such fibres may be stretched at 120 DEG  C. and heated for two hours at 125 DEG  C.  The films may be heated and steamed to remove solvent.  Various stretching tests are described.  The fibres may be used in tyres, ropes and cordage.
Patent GB-578412-A (GB)
Title: Cold-setting compositions and cements
IPC: C08K3/30
Filed: 1943-12-15
Abstract: A cold-setting composition comprises an aromatic amine-formaldehyde resin soluble in furfural, and a solid dehydrating agent such as soluble anhydrite adapted to remove any water formed by the reaction of the furfural and the resin during setting, with or without an acid such as acetic acid to control the time rate of setting.  A glycol di-monochloracetate such as ethylene glycol di-monochloracetate or a polyglycol dichloride such as triglycol dichloride may be used in addition to or in place of the furfural.  The resin may be prepared from aniline, o-, m-, or p-toluidine, or diamino diphenyl methane. Other dehydrating agents specified are activated alumina and magnesium chloride, and acids specified are maleic, citric, lactic, propionic, and inorganic acids.  The dehydrating agent and resin may be mixed first to form a powder, which may then be mixed with the liquid mixture of furfural, di-monochloracetate or dichloride, and the acid.  In an example, one part of a resin prepared from aniline, formaldehyde, and hydrochloric acid is mixed with two parts of soluble anhydrite and the powder so obtained is mixed to a paste with one part of furfural containing 1.5 per cent of acetic acid.  A quick set may be obtained by using 10 per cent acetic acid, or the acid may be omitted for slow setting.  The products can be used as cements, adhesives, or coating compositions.  Specification 483,778 is referred to.
Patent GB-260920-A (GB)
Title: Improvements in or relating to wire label holders for labelling trees and plants
IPC: G09F3/12
Filed: 1926-08-27
Abstract: 260,920. McOmish, G. Aug. 27, 1926. Securing. - A label holder consists of a wire or rod doubled to form legs a, a<1> connected by a cross-piece b which is bent backwards and downwards to form short inclined portions c, c<1> on which the label d is threaded. The legs of the holder preferably converge as shown in Fig. 2.
Patent GB-1439305-A (GB)
Title: Method of manufacturing plastics coated metallic sheets or foils  of lead and lead containing alloys
IPC: B32B15/08
Filed: 1974-05-13
Abstract: 1439305 Lead-plastics laminates G HABERSTROH 13 May 1974 [19 May 1973] 21128/74 Heading B5N A method of manufacturing a composite of a metallic sheet or foil comprising lead coated with a plastics material comprises (a) alloying the lead with antimony prior to coating the surface with a plastics material and/or (b) coating a lead base material with tin or a tin alloy or a lead antimony alloy, in order to produce a protective layer effective against corrosion and delamination at the interface between the matallic and plastics material surfaces and (c) coating the lead antimony alloy or the coated lead base with a layer of plastics material. The surface of the metal may be coated with a protective film serving as an adhesive for the plastics layer and consisting of a plasticizer dissolved in a monohydric alcohol prior to application of the plastics layer. The plastics layer may be a preformed layer of an ethylene-acrylic acid copolymer and may be applied to the metal by pressing in a heated roller nip. The metal coating may be applied to the lead base by roller plating. In a preferred embodiment, a plastics layer is applied to each face of the metal.
Patent GB-241349-A (GB)
Title: Sound screening attachment for windows and like wall apertures
IPC: E06B7/06
Filed: 1924-09-08
Abstract: 241,349. Fisk, E. T. Sept. 8, 1924. Window-shutters.-A soundscreening device for windows and like wall apertures comprises a hopper-like structure 11 formed of plates 12, 13 secured in a framework 14, the hopper 11 being mounted at its inner bottom corners on pivots 16 and adapted to be swung thereabouts by a stay 20. A hinged flap 17<1> is mounted on the sill to form a closure for the open bottom of the hopper 11, and when the latter is not constructed for the full height of the aperture, a shield 23, preferably of glass pivoted at 25, is provided. The hopper 11 is constructed of glass, sheet metal, or wood, and may be double walled, the space between said walls being filled, if desired. with sound-absorbing material, while its surfaces are finished so as to assist reflection. A stay 20 may be provided at each side of the device, and additional deflectors X, Y may be fitted. In a modification, the plate 12 is formed with two vertical panels 31, 32, Fig. 7, adapted to open like a casement, while the panels may be adapted to pivot horizontally as at 35. 36, Fig. 8.