baber/WOPTO huggingface dataset:
Patent GB-1078105-A (GB)
Title: Light sensitive material and process for the development thereof
IPC: G03F7/023
Filed: 1964-12-01
Abstract: 1,078,105. Photo-sensitive materials. SHIPLEY CO. Inc. Dec. 1, 1964 [Dec. 9, 1963; Nov. 23, 1964], No.48732/64. Heading G2C. A photo-sensitive composition comprising a naphthoquinone-(1, 2)-diazide sulphonic acid ester, an alkali-soluble resin and an alkaliresistant film-forming material present in an amount equal to or less than that of the resin and the diazide. Specified film-forming materials are polystyrene, α-methyl styrene/vinyl toluene copolymer, sucrose octobenzoate and melamine - or benzoguanimine-formaldehyde resins. The alkali-soluble resin specified is a phenol novolak. The composition may also contain plasticisers and dyes. In the examples, the composition is coated on a laminated support (an epoxy paper laminate having a copper foil laminated thereto), imagewise exposed and developed with alkali to remove the exposed areas and to produce a printing plate, a template or an etching resist.
Patent GB-1318895-A (GB)
Title: Device for measuring developability
IPC: G03G15/08
Filed: 1970-10-14
Abstract: 1318895 Electro-photography XEROX CORP 14 Oct 1970 [17 Oct 1969] 48782/70 Heading G2H  In a process for recycling a solid toner/ carrier mixture to a xerographic development zone (the toner being replenished from a dispenser when its concentration falls below a predetermined threshhold value), a portion of the mixture bypasses the zone through a device 40 for measuring the concentration of the toner, the device comprising a spaced pair of transparent electrode plates 48 and 50 of alternating polarity (e. g. each second), a lamp L1, and a photo-cell P1, the output of which is dependent on the concentration of toner. When the concentration reaches the threshhold value, the toner dispenser is automatically actuated. If the dispenser is empty, the xerographic machine may be automatically shut down when a predetermined lower concentration of toner is reached.
Patent GB-1277625-A (GB)
Title: Improvements in and relating to sealed electric secondary cells
IPC: C01B5/00
Filed: 1969-10-06
Abstract: 1277625 Sealed accumulators MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 6 Oct 1969 [4 Oct 1968 2 Dec 1968 23 May 1969] 48989/69 Heading H1B A sealed accumulator which is liable to evolve oxygen and hydrogen in use includes a container 11, an electrolyte 15 within the container, a catalyst 25 for recombination of oxygen and hydrogen and means 20 for admitting supplementary oxygen to the catalyst from outside the container. In a particular embodiment, the accumulator is a lead-acid cell in a polystyrene container and the electrolyte is sulphuric acid gelled with colloidal silica and optionally reinforced with P.T.F.E. fibres. The catalyst comprising palladium black on a graphite carrier is made by mixing powdered graphite, HCI and PdCl 2 , drying the mixture and reducing the PdCl 2  to palladium black with a mixture of sodium hydroxide and formalin. The powder catalyst is then bonded with fluorocarbon resin and a layer 26 of fluorocarbon polymer particles sintered on top. Above the sintered polymer layer is a perforated film 27 of polystyrene or P.V.C. and above this is a layer 31 of lead oxide mixed with glycerol, which serves as an electrolyte trap. Ambient oxygen is admitted to this assembly through perforated plastics coverplate 32. In the event of a rise in pressure within the cell, safety device 24 is forced open. Orifice 36 allows the pressure to rupture diaphragm 36 and be dissipated through vent 42. The body is filled with electrolyte absorbent 41 and any electrolyte not trapped by this will change the colour of indicator member 43 visible through closure member 39.
Patent GB-1243827-A (GB)
Title: Metal catalyst support
Inventor: DEMAIO DENNIS ANTHONY
IPC: B01J35/02
Filed: 1968-10-16
Abstract: 1,243,827. Oxidation catalysts. HALCON INTERNATIONAL Inc. 16 Oct., 1968 [17 Oct., 1967], No. 49110/68. Heading B1E. [Also in Division B3] A catalyst support comprises a porous pellet of deformable filamentary metal having dimensions within the range #" to 5/16" and a porosity of 20-70%. The catalyst may be made by compacting metal wire with a pellet of the specified size and porosity and depositing silver thereon. The wire may be of Cu, Al, Ni, W, Su or steel. The pellets may be cylindrical or spherical in shape. The wire may receive a coating of promoter e.g. Hg, Su, Ba or Cu.
Patent GB-1163597-A (GB)
Title: Means for Watertight Mounting of Panels in Apertures
Inventor: ASPAAS FINN
IPC: E06B3/62
Filed: 1966-11-03
Abstract: 1,163,597. Mounting panels in apertures. F. ASPAAS. 3 Nov., 1966 [3 Nov., 1965], No. 49395/66. Heading E1R. A panel I is mounted in an aperture in a construction 9 in a watertight manner by means of a base resilient strip 2 of rubber &c. and a locking strip 3 which is held in looking engagement with the base strip 2 by means of projections 14 having a plurality of teeth which lockingly interengage with teeth 13 on the base strip 2 and/or by means of the locking strip 3 overlapping, as by a portion of the projection 14, the edge of the panel I (in the case of the sides of the aperture only the second feature is present (Fig. 4 not shown)) both strips having sealing tips 10a, 15 which make watertight contact with the panel and may overlap a frame 5. The strips have also tips 15 and 6 which make contact with the base strip 2 and with the window sill 11 and form a smooth downwardly inclined surface. The base strip may have a reinforcing metal strip 17 to secure it to the structure 9.
Patent GB-1504790-A (GB)
Title: Electric device for starting and supplying a gas and/or vapour discharge lamp
IPC: H05B41/232
Filed: 1975-12-02
Abstract: 1504790 Supply circuits for discharge lamps PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 2 Dec 1975 [5 Dec 1974] 49417/75 Heading H2H A circuit for starting and supplying at least one gas and/or vapour discharge lamp comprises a capacitor 3 and a first coil 4 connected in series with the lamp(s), and a second coil 12 connected in parallel with the lamp(s), the second coil being saturated before the starting of the lamp(s) and causing a resonance condition so that the voltage across the lamp(s) exceeds that of the A.C. supply, the second coil becoming unsaturated on starting the lamp(s) and assuming an impedance which exceeds the resistance of the started lamp(s). Two, low pressure mercury vapour lamps 5, 6 with pre-heatable electrodes 7-10 are connected in series and initially the current flowing through the electrodes 7, 10 and the coil 12, which is the primary winding of a transformer 13, is sufficient to saturate the coil. This causes a resonant condition to occur so that a high voltage is applied to the lamps. When the lamps strike, the voltage across them falls so that the coil 12 becomes unsaturated and assumes a high impedance. The voltage increase occurs at the end of each half-cycle of the supply waveform to continuously restart the lamps. A positive temperature coefficient resistor 11 is connected in series with the coil 12 to reduce the current if the lamps do not start. In a modification for starting a single lamp, the transformer is replaced by a coil connected in parallel with the lamp. The lamp may be a high pressure discharge lamp.
Patent GB-1315085-A (GB)
Title: Photocopying process
IPC: G03C1/73
Filed: 1971-10-25
Abstract: 1315085 Photographic processes NATIONAL CASH REGISTER CO 25 Oct 1971 [5 Nov 1970] 49427/71 Heading G2C A photographic process comprises imagewise exposing a photo-sensitive material comprising a support with a coating containing microscopic droplets of an organic solvent solution of a 4, 4'-bis (di-C 1 -C 4  alkylamine) benzophenone isolated by pressure-rupturable, u.v. transmissive polymer which converts the benzophenone to a hydrol, pressure is uniformly applied to rupture the droplets and then treated with acidic material to produce a dye. The droplets are preferably capsules. The acidic material may be in a separate layer of the material, incorporated in the capsule wall or be in a separate sheet in which case dye image is produced on this sheet. Specified acidic materials are acidic clays, polymers containing free carboxylic acid groups, polymers disclosed in Specification 1053935 and zinc chloride.
Patent GB-1484089-A (GB)
Title: Control of engines
IPC: B60K26/00
Filed: 1974-11-15
Abstract: 1484089 Controlling IC engines R ALLARD R M ALLARD and P M ALLARD 15 Nov 1974 [16 Nov 1973 7 Jan 1974 10 May 1974]  49482/74 Heading F1B [Also in Division F2] To promote economical driving of an I.C. engine propelled vehicle three stages of increasing resistance oppose opening of the accelerator. In one arrangement, Fig. 4, a tubular body portion 50 is threadedly attached to the steering column or dashboard 60 of the vehicle and has screwed thereto a further tubular portion 51 having a base 53 through which is slidable a rod 54. The latter is connected to the accelerator pedal by a cable which is slack during initial accelerator opening against its return spring. When the slack has been taken up, further accelerator opening causes movement of rod 54 and its piston 55 against the resistance of a spring 56. Eventually piston 55 engages movable abutment 58 so as to be subject to the increased resistance provided by additional spring 57. The initial compression of springs 56, 57 can be adjusted by nut 59 on rod 54 and by screwing body portions 50, 51 relative to each other. Slack in the cable can be adjusted by screwing portion 50 relative to fixed part 60 using knurled knob 52. Modified arrangements each comprising two springs of different stiffness are illustrated in Figs. 2 and 3 (not shown). In a further modification, Fig. 6, the stages of resistance are provided by a device comprising a rotatable disc mounted on a shaft of the accelerator linkage and having a radial bore 67 containing a spring 68 urging ball 69 against the internal surface 64 of a surrounding casing. Surface 64 is stepped at 65 and 66 such that the resistance to rotation of the disc increases as ball 69 passes each step. The point at which the latter operate can be adjusted by rotating the casing via link 70. The disc may be replaced by a cam, the spring-loaded ball or roller being carried by the casing. The cam may be mounted on the axis of a carburetter throttle valve and be acted upon by a leaf-spring.
Patent GB-1099764-A (GB)
Title: Improvements in and relating to therapeutic compositions containing mangiferin
IPC: B01F7/00
Filed: 1966-11-08
Abstract: Pharmaceutical compositions having cardiotonic and diuretic activity, for oral, parenteral or rectal administration, comprise mangiferin having the formula:  <FORM:1099764/A5-A6/1> or its alkali metal or alkaline earth metal salts, together with a pharmaceutically acceptable vehicle or excipient.  Mangiferin, which is the C-glycoside, in the 2-position, of 1, 3, 6, 7-tetrahydroxy-xanthone, is alternatively known as aphloiol, or euxanthogen.  The compositions may take the form of tablets, injectable solutions in ampoules, or suppositories, each unit dosage containing 100 to 500 mgs. of the active agent with conventional excipients.  Mangiferin is prepared by extraction with boiling ethanol of the dried leaves of Aphloia theaeformis Bennett (also known as "Voafontsy") or Mangifera indica L. (the mango or mangalava), the leaves first being extracted with boiling acetone and the acetone extract discarded.  The ethanolic extract is reduced in volume and cooled, when yellow crystals of mangiferin are obtained, which are recrystallised from aqueous acetic acid.
Patent GB-1499180-A (GB)
Title: Method for the synthesis of ureas
IPC: C07D239/10
Filed: 1975-12-08
Abstract: 1499180 Ureas and cyclic ureas AMIC SpA 8 Dec 1975 [10 Dec 1974] 50307/75 Heading C2C Ureas and cyclic ureas of the formula wherein n is 2, 3 or 4 and R and R<SP>1</SP> are hydrogen atoms or substituted or unsubstituted hydrocarbon radicals, are obtained by heating the corresponding carbamates of the formula M being an alkali metal or alkaline earth metal.
Patent GB-1123310-A (GB)
Title: Refrigeration control apparatus
IPC: F25B41/06
Filed: 1966-11-11
Abstract: 1123310 Valves TEXAS INSTRUMENTS Inc 11 Nov 1966 [3 Jan 1966] 50685/66 Headings G3R R4 R61 and R37D A refrigeration apparatus comprises a compressor 11 driven by an electric motor 12, a condenser 13 and evaporator 15, the flow of refrigerant around the apparatus being controlled by a valve 19. The various signal producing elements include thermistors TH1, TH2 for sensing the temperature of the motor M and the temperature of the cooled space, a sensor HS for sensing the humidity of the space and sensors PS1; PS2 for sensing the pressures in the refrigerating system on either side of the valve 19. Each of the sensors is associated respectively with reference elements R1-R5, the difference signals being combined to produce a signal which, by way of an amplifier A controls the energization of a heating element H1 situated in the valve 19 so as to control the amount of refrigeration. The apparatus is normally controlled by way of signals TH2, HS or TH2 alone if desired, the signals TH1, PS1, PS2 being limiting signals to shut down the system if the motor temperature or the pressures in the refrigerating system become excessive. The valve 19 includes a cylinder 27 in which moves a piston 31 carrying a rod 23 having a conical end co-operating with an orifice 25 so as to meter the flow of refrigerant. Movement of the piston in the cylinder is effected by a spring and a mass of material 35 - such as a silicone rubber - having a temperature coefficient of expansion greater than that of the cylinder 27; expansion of the rubber 35 being caused by the heat generated by the heating element H1.
Patent GB-1154380-A (GB)
Title: Improvements in Storing Germinative Material
Inventor: DUNLOP JAMES KERR COOPER
IPC: A01F25/14
Filed: 1966-11-16
Abstract: 1,154,380. Refrigerators; cooling granular material. ESSO RESEARCH & ENG. CO. 20 Oct., 1967 [16 Nov., 1966], No. 51375/66. Headings F4H and F4U. [Also in Division A2] An apparatus for storing moist germinative material (e.g. grain, seeds, corms and potatoes) without substantial deterioration thereof, comprises an air-tight flexible container 2 (e.g. made of polyvinyl chloride, butyl rubber or an ethylene-propylene rubber) supported in a frame 1, means (e.g. a fan) for circulating air, in a closed circuit through container 2 and passages 5, 6 and 4 and a thermostatically controlled chilling or refrigeration unit 7 for chilling the circulating air when necessary, to a temperature below that at which the stored material is subject to mould attack or fermentation. The material is introduced into the container 2 through neck 9 and removed via auger shoot 8.
Patent GB-1527519-A (GB)
Title: Optically clear void filling compound
IPC: C08K3/36
Filed: 1975-12-16
Abstract: 1527519 Optically clear polydiorganosiloxane compositions GENERAL ELECTRIC CO 16 Dec 1975 [18 Dec 1974] 51415/75 Heading C3T An optically clear void filling compound that allows at least 80% of the electromagnetic waves striking it to pass therethrough comprises a polydiorganisoloxane or a blend of polydiorganosiloxanes having a viscosity of 100 to 100,000 cP at 25 C., where the organo groups are methyl and phenyl and the total phenyl content varies from 29 to 34% wt. in admixture with from 4-20% by weight of a filler or fillers selected from untreated fumed silica and untreated precipitated silica, based on the weight of the said polymer or blend of polymers. The compound may optionally contain from 0À05 to 1% wt. of a stabilizer which is a polyether having oxyalkylene groups consisting of ethylene oxide or propylene oxide groups or mixtures thereof and having a refractive index of from 1À459 to 1À467, the percentage being based on the weight of the polymer or blend of polymers. The filler preferably has a surface area of 100 to 500 sq. m. /g. and a silanol content of from 0À25% to 1% wt. The siloxane polymer generally has the average unit formula R a SiO (4-a) / 2 , where R is methyl and phenyl, and a is from 1À9 to 2.1. The blend of diorganopolysiloxane polymers may comprise polymers having a phenyl content down to 5% wt. and polymers having a phenyl content up to 50% wt. When such a blend of polymers is used then the silica filler must be first mixed with the diorganopolysiloxane having a phenyl content of 29-34% wt.
Patent GB-1387194-A (GB)
Title: Hydraulic servo unit for automotive braking system
IPC: B60T13/12
Filed: 1972-11-08
Abstract: 1387194 Brake boosters NISSAN MOTOR CO Ltd 8 Nov 1972 [11 Dec 1971] 51593/72 Heading F2F In an hydraulic booster for a master cylinder leftward movement of an operating rod 90 causes a cone-shaped valve element 104 to sealingly engage a conical valve seat 108 under the bias of spring 120 thereby closing communication between an inlet 18, leading to a pump charged accumulator, Fig. 1 (not shown), and outlet 20 leading to a reservoir (26), by way of chambers 66, 42, bores 68, 70 provided in a power piston 62 and chamber 44. Further leftward movement causes an actuating member 102 to unseat a ball of a valve 82, fluid pressure then passing to chamber 42, to provide the boost through power piston 62, when the pressure in chamber 42 exceeds that in chamber 44, by way of openings 80, bores 74, 76, openings 96, bore 112 and passageway 100 provided in actuating plunger 88. In the embodiment shown sealing between valve seat 108 and valve element 104 takes place only at the outward extremity P thereof but in a further construction, Fig. 6<1> (not shown), two points of contact (P1) are provided at the inner extremity, and an outer peripheral wall 104a of the valve element 104 which engages a valve surface 124 on the power piston 62.
Patent GB-1167327-A (GB)
Title: Improvements in or relating to knife Folding Machines
Inventor: SCHMIDT WERNER
IPC: B65H45/18
Filed: 1966-11-18
Abstract: 1,167,327. Folding machines. LEIPZIGER BUCHBINDEREIMASCHINENWERKE, VEB. 18 Nov., 1966, No. 51797/66. Heading B8R. In a knife folding machine for forming three or four folds in a sheet the third fold may be provided selectively in an upward or downward direction with reference to the plane in which the sheet is fed, by two parallel pairs of folding rollers and their associated folding knives, one roller pair being disposed above and the other pair below the sheet feed plane, the pairs being spaced in the direction of the plane. A sheet fed in direction A receives a first fold from a mechanism comprising rollers 1 and folding knife 2, and is then conveyed by a belt track to a second folding device comprising rollers 6 and knife 7. Sheet transport track 17 then conveys the sheet to a third folding mechanism which in a first embodiment, Figs. 1 and 2, comprises a first pair of rollers 11 with a folding knife 12, a second pair of rollers 13 with a folding knife 14, sheet stops 15 and a drawing device 16. Beneath this folding mechanism the sheet enters a sheet delivery device 19 or passes to the right on a sheet, transport track 20 to a fourth folding mechanism. Sheet feed track 17 forms within the third folding mechanism sheet feed plane 27. A sheet 18 is guided by knife 12 between rollers 11, and then by way of a sheet transport bridge consisting of rollers 28 guide plates 29 and deflector 30, between rollers 13 whose associated knife 14 is stationary and then by way of adjustable sheet guide 31 either to the delivery system 19 or the fourth folding mechanism. For a downward fold in sheet 18, sheet stops 8 are displaced a distance a to the right, 8<SP>1</SP>, so that the sheet arrives in the feed plane 27 with its centre beneath folding knife 14 which drives sheet 18 between rollers 13 to guide 31 as above. During this operation folding knife 12 is inoperative. In a second embodiment (Figs. 3 and 4) when the upward folding knife 12 is in use the sheet transport bridge is positioned between the raised inoperative knife 14 and its associated folding rollers 13, the folding rollers 11 and the sheet transport bridge being displaceable out of the path of knife 14 and parallel to the sheet feed plane when a downward fold is required. In a third embodiment (Figs. 5 and 6) the path of descent of knife 14 is blocked as above when knife 12 is in use but in this case just the sheet transfer bridge is mounted such that it may be moved out of this path when a downward fold is required. In a fourth embodiment (Figs. 7 and 8) the folding knives are mounted vertically in line with each other, one above and one below sheet feedplane 27 and the associated folding rollers are mounted for horizontal sliding movement in opposite directions, longitudinally of the feed plane such that either the one or the other pair is brought into alignment with its folding blade according to the direction of fold required.
Patent GB-1400958-A (GB)
Title: Disc recording system
IPC: G06G7/26
Filed: 1973-11-09
Abstract: 1400958 Automatic control of speed INTERNATIONAL BUSINESS MACHINES CORP 9 Nov 1973 [29 Nov 1972] 52030/73 Heading G3N [Also in Divisions G4-6] A disc recording system has the motor driving the disc controlled so that the tangential velocity of the portion of the disc adjacent the transducer remains constant over the whole radial travel of the transducer. The radial movement of the transducer 3 is signalled by the position of wiper 14 on linear potentiometer 11 to charge the control voltage of the D.C. motor 30 on line 19 so that the change of disc speed with transducing radius follows a hyperbola thereby keeping the tangential velocity at the transducer constant. The required circuits for obtaining an output voltage Ef which is proportional to the reciprocal of the radius are shown in Figs. 2 and 3 (not shown) and use a differential amplifier arrangement in a resistive network, (see Division G4).
Patent GB-1528978-A (GB)
Title: Dynamically formed multi-layer permselective membrane for reverse osmosis
Inventor: HEUVEN JAN WILLEM VAN
IPC: B01D69/14
Filed: 1975-12-19
Abstract: 1528978 Reverse osmosis membrane NETHERLANDS APPLIED SCIENTIFIC RESEARCH FOR INDUSTRY TRADE & COMMERCE 19 Dec 1975 [20 Dec 1974] 52088/75 Headings B1X and B2E A membrane used in reverse osmosis comprises a porous support, e.g. of glass fibre, ceramic or plastics, has a first intermediate inert layer, e.g. diatomaceous earth, glass like silicates, glass fibres and asbestos fibres, a second intermediate layer of granular inert material, e.g. silicon dioxide or carbon black and a layer of particulate membrane forming material, e.g. polyacrylic acid or sodium alginate. The material of the membrane and that of the second intermediate layer may be mixed to form a single layer.