baber/WOPTO huggingface dataset:
Patent GB-364794-A (GB)
Title: Improved process of acetylating cellulose
IPC: C08B3/06
Filed: 1930-12-10
Abstract: Cellulose acetate of low viscosity and good strength is prepared by pretreating the cellulose with acetic acid and a catalyst at a temperature of 100 DEG  F., then adding the acetic anhydride and allowing the temperature to rise to between 120-150 DEG  F. until acetylation is substantially complete, as shown by the disappearance of fibres, and then lowering the temperature to about 100 DEG  F. and maintaining it at this temperature until the dope is free from grain. The cellulose acetate may be hydrolysed in known manner.  An example is given wherein the catalyst is a mixture of sulphuric and phosphoric acids; following acetylation, hydrolysis is effected by adding water and acetic acid and maintaining the temperature at about 100 DEG  F. until acetone solubility is attained.
Patent GB-1066468-A (GB)
Title: Diazotype copying material containing substituted 2,3-hydroxy-naphthoic acid amides
IPC: G03C1/58
Filed: 1964-09-11
Abstract: The Specification describes the preparation of compounds of the formula <FORM:1066468/C2/1> in which R and R1 denote substituted or unsubstituted alkyl groups, R2 denotes hydrogen or a substituted or unsubstituted alkyl group, R3 denotes hydrogen or a substituted or unsubstituted alkyl, aralkyl or aryl group and Z denotes hydrogen, halogen or an alkoxy group. Alternatively, R and R1, and (or) R2 and R3, may form a heterocyclic ring with the nitrogen atom to which they are attached, e.g. a pyrrolidine, piperidine, morpholine, thiomorpholine or piperazine ring.  The compounds may be prepared by amidating 2,3-hydroxynaphthoic acid with ammonia or an appropriate amine and subjecting the resulting amide to the Mannich reaction with formaldehyde and a secondary amine.  A number of amines suitable for these reactions are specified, and an example is given in which 2,3-hydroxynaphthoic acid amide is reacted with formaldehyde and morpholine to yield 1-morpholinomethyl-2-hydroxynaphthalene carboxylic acid amide.  Other specified products include 1-dimethylaminomethyl-2-hydroxynaphthalene - 3 - carboxylic acid ethanolamide, 1 - dimethylaminomethyl - 2 - hydroxynaphthalene - 3 - carboxylic acid phenylamide, 1 - morpholinomethyl - 2 - hydroxynaphthalene-3 - carboxylic acid piperidide, bromo-1-dimethylaminomethyl-2-hydroxynaphthoic acid diethanolamide, and bromo - 1 - morpholinomethyl-2-hydroxynaphthoic acid pyrrolidide. The products are useful as couplers in diazotype photography (see Division G2).
Patent GB-1205505-A (GB)
Title: Apparatus for controlling the power and the load distribution in an electric power-consumption apparatus
IPC: H02J3/18
Filed: 1968-08-06
Abstract: 1,205,505. Control systems for consumption apparatus. WIENER SCHWACHSTROMWERKE G.m.b.H. 6 Aug., 1968 [11 Aug., 1967], No. 37360/68. Heading H2H. Consumption apparatus such as an electrical furnace has its power supply controlled by balancing devices and/or phase-shifting devices which are adjusted by one or more control units responsive to current or voltage signals or phase angles or other electrical operating parameters and a relatively low auxiliary voltage is applied to the consumption apparatus before the normal operating voltage is applied thereto, and means are provided whereby electrical simulated parameters are applied to the control unit or units whilst the auxiliary supply is applied to the power consumption apparatus. As shown a furnace 1 is fed through a contactor 2 and current and voltage transformers 8, 9, 10, 15 represent the circuit condition through switches 6, 7 to influence control units 4, 5, which in turn control switches 16, 18 to connect and disconnect respective balancing devices and capacitors to the main circuit. Before the capacitor 2 is closed, a contactor 11 connects an auxiliary transformer 12 to the furnace 1 so as to operate the control units in accordance with the circuit conditions so that the normal operating voltage can be reapplied without causing overloading even when the charge in the furnace has been greatly changed. When the contactor 11 is closed switches 6 and 7 are changed over to bring current transformer 13, voltage transformer 14 and amplifier 17 into circuit. A switching unit 21 prevents the application of the normal operating voltage to the furnace 1 until the control system has operated to establish steady state conditions after the auxiliary voltage is applied.
Patent GB-968768-A (GB)
Title: Web feed apparatus
IPC: B65H23/06
Filed: 1962-10-02
Abstract: 968,768. Feeding webs. MASCHINENFABRIK AUGSBURG - NURNBERG A.G. Oct. 2, 1962 [Oct. 21, 1961], No. 37418/62. Heading B6B. [Also in Division G3] A swinging roller 5 controls via a pneumatic control system, the braking of an exhausting roll 1, and therefore the tension of the web, during the time a replacement roll 3 commences to move to the splicing position, until the time the splice takes place. A regulator 9 in the form of a pneumatic force balance, Fig. 2 (not shown), is connected via a conduit 20 to a pneumatic converter or amplifier 29, Fig. 3 (not shown), which supplies the air brake 8 acting on the roll 1 via conduit 24. A constant air pressure is supplied via conduit 11 to one side of the pneumatic balance in the regulator 9. This pressure is adjusted by a controller 12 to give the required tension in the web. A second conduit 10 supplies the other side of the pneumatic balance, and the pressure therein is dependent on the position of the swinging roller operating an indicator such as a valve 7. The two pressures are compared in the regulator 9 and the necessary brake air pressure is adjusted automatically. An electromagnetically operated valve 27 is only open during the time tension control is required.
Patent GB-822714-A (GB)
Title: Insulation for underground conduits and method of producing the same
IPC: C08L95/00
Filed: 1955-12-30
Abstract: Pipes are protected from corrosion and also insulated against heat loss by surrounding them with a mixture of a high-softening-point hydrocarbon and expanded perlite particles coated with a similar hydrocarbon.  A hot fluid is passed through the pipe in order to fuse the adjacent portion of the protective material which thereafter normally remains in a plastic condition when the pipes are conveying hot fluids.  Surrounding this zone is an intermediate sintered zone and an outer zone of loose hydrocarbon-perlite mixture unaffected by heat.  The hydrocarbon may be a by-product from the refining of petroleum asphalt known as a solvent precipitated asphalt resin.  The expanded perlite is prepared by quickly heating perlite ore, a material found in the No Agua mountains of Colorado, U.S.A., and containing silica, aluminium, water and small quantities of the oxides of sodium, potassium, calcium and magnesium, to approximately 2000 DEG  F., when glass-like beads or pearls are formed.ALSO:Pipes are protected from corrosion and also insulated against heat loss by surrounding them with a mixture of a high-softening-point hydrocarbon and expanded perlite particles coated with a similar hydrocarbon.  A hot fluid is passed through the pipe in order to fuse the adjacent portion of the protective material which thereafter normally remains in a plastic condition when the pipes are conveying hot fluids. Surrounding this zone is an intermediate sintered zone and an outer zone of loose hydrocarbonperlite mixture unaffected by heat.  The hydrocarbon may be a by-product from the refining of petroleum asphalt.  The expanded perlite is prepared by quickly heating perlite ore, a material found in the No Agua mountains of Colorado, U.S.A. and containing silica, aluminium, water and small quantities of the oxides of sodium, potassium, calcium and magnesium, to approximately 2,000 DEG F. when glass-like beads or pearls are formed.
Patent GB-977214-A (GB)
Title: Chemical compounds
IPC: A61K9/00
Filed: 1962-10-04
Abstract: The invention comprises bismuth pectinate and aqueous gels or suspensions thereof. The compound may be prepared by treating pectin, preferably in aqueous solution, with an aqueous solution of a bismuth salt, e.g. bismuth, nitrate or subnitrate, thereby precipitating bismuth pectinate as an aqueous gel.  The reaction is preferably effected in presence of an inhibitor for hydrolysis of bismuth salts, e.g. glycerol or nitric acid. The nitric acid, if used, is more than 1, and less than 3 times the concentration of elementary bismuth in the reaction mixture.  The aqueous gel of bismuth pectinate may be dehydrated by washing with, e.g. ethanol or acetone, to yield a powder, which is insoluble in water and organic solvents but soluble in dilute acids. The bismuth pectinate, containing e.g. 10-30% by weight of bismuth, may be used in pharmaceutical and cosmetic preparations (see Division A5).ALSO:Pharmaceutical and cosmetic compositions contain bismuth pectinate (a bismuth salt of pectin) (Division C3).  For therapeutic use, e.g. in treatment of gastro-intestinal ailments, the bismuth pectinate composition may contain pharmaceutical carriers, excipients or other physiologically active substances, and may be in the form of e.g. powders, syrups or elixers. Granulates may be prepared in which the bismuth pectinate is associated with sugar, gums, dyestuffs or perfumes.  For peroral administration, e.g. in sachets, as stomach and intestinal adsorbants and protectors, the preferred dosage unit is 0.5 to 10 g.  Bismuth pectinate may also be formulated as gels, colloidal suspensions, milks or creams, containing also mineral salts and wetting agents, mucilages, gelatines or glycerol.  Bismuth pectinate disperses in strong electrolytic solutions to form non-greasy cosmetic creams.
Patent GB-1138429-A (GB)
Title: Method of manufacturing midget incandescent lamps
IPC: H01K3/00
Filed: 1967-08-16
Abstract: 1,138,429. Shaping glass tubes; sealing glass to glass. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 16 Aug., 1967 [19 Aug., 1966], No. 37622/67. Heading C1M. [Also in Division H1] In making midget electric lamps, a flange enclosing the lead-in wires is formed on the end of an exhaust tube, the filament is fitted and an envelope is placed on or over the flange and sealed to it, the base of the tube being kept open during the sealing and, if necessary during the formation of the flange, by a needle. To form the flange, the heated end of an exhaust tube 3 is pressed into a recess 2 in a table 1, the lead-in-wires 5, 6 being mounted in holes 4 in the recess and a central hole being also provided therein in which is a needle 8, the end of which enters the exhaust tube. To prevent the needle sticking to the glass, a lubricant such as a mixture of zirconium and magnesium oxide may be used. The zirconium may be replaced by phosphorus and the magnesium oxide by zirconium oxide. The finished mount is placed on a table on which is a hollow needle which enters the exhaust tube, the envelope is placed over the mount and sealed to it, flushing gas being meanwhile passed into the bulb through the needle. The bulb is then evacuated or filled with inert gas and the exhaust tube sealed off. The foot may be pinched to form a glass base before sealing off. The needle may be of smaller diameter than the interior of the exhaust tube to provide an exit for expelled air or flushing gas, or a needle having coaxial ducts may be used.
Patent GB-1359293-A (GB)
Title: Incinerators
IPC: F23J15/02
Filed: 1971-08-03
Abstract: 1359293 Incinerators SOBERS INCINERATORS Ltd 3 Aug 1971 [5 Aug 1970] 37749/70 Heading F4B An incinerator comprises an ash compartment 14, a combustion chamber 16, a fly ash trap 18 and an after-burner assembly 64. A fly ash pan 50 is located within the fly ash trap 18 and has a central funnel 52 which overlies an aperture 48 in a refractory block 46 for the passage of spent gases. A smoke deflector 54 is arranged above the pan 50 such that fly ash impinges against the deflector and falls back into the perimeter well 56. The spent gases pass through a gap 58 to the afterburner assembly 64. An air injection and burner assembly 72, in the form of a central gas supply conduit surrounded by air injector pipes 74, is connected into the lower end of the afterburner. Air feed pipes 36 extend into the ash compartment 14.
Patent GB-940653-A (GB)
Title: Improvements in control installations for regeneratively heated hot blast stoves
IPC: C21B9/00
Filed: 1959-11-06
Abstract: 940,653. Thermal regenerators. ZIMMERMANN & JANSEN G.m.b.H. Nov. 6, 1959 [July 16, 1959], No. 37759/59. Heading F4K. In a blast furnace plant having at least two stoves supplying hot blast to the furnace, the change over from one stove to another is automatically initiated by a change in the temperature of the blast. The regulators 2, 4 for the amount of cold blast fed to the plant and the temperature of the blast at the furnace bustle pipe HWR are linked through a regulator 5 to control the gas supply valve 22 and combustion air valve 25 for each stove, as claimed in Divisional Specification 940,654 [Division F4]. Thermocouples 10, 11, and 26 in the stove hot blast outlet, the stove flue gas outlet and in the dome of the stove respectively provide signals for changing the stove state to " gas," " blast " or " boxed," as does a limit switch 6 closed when the damper 31, controlling the amount of cold air added to the stove output in accordance with the temperature in the bustle pipe HWR, is closed. When a stove I on " blast " is approaching the end of its useful blast period, the hot blast output thermocouple 10, or the stove dome thermocouple 26 provide signals which are transmitted through the central control 12 of the stove I to the programme control 13 of a second stove II, or " gas " or " boxed " to change this stove II to " blast." The closing of the switch 6 also causes the stove II to be changed to " blast." The arrangement is such that the stove I cannot be changed to " gas " until another stove is on " blast," and that the stove which has been longest on " gas " or " boxed " is selected to change to " blast." A delayed action relay prevents the stove just changed to " blast " changing back immediately to " gas " and switches operated by opening and closing of the valves of each stove ensure that these valves are operated in the correct order when the closing of a relay initiates the changeover. A relay is actuated to " box " a stove in response to an undesirable rise in temperature at the dome thermocouple 26 or the flue gas thermocouple 11. In a three stove system, each stove has an A/M switch by which the stove can be taken out of the automatic operation, so that the remaining two stoves can then operate automatically, or, by operating the A/M switches of all three stoves, they can be operated by means of push-buttons PB at each central control. Switches are provided to take a stove out of operation completely. When two stoves only are operated automatically, the automatic regulation of the gas and air supply to the stove on " gas " is taken out of circuit, so that the stoves can operate at their fullest efficiency.
Patent GB-1190007-A (GB)
Title: Improvements in or relating to Radar Apparatus
Inventor: LEWIS JOHN HENRY REGINALD
IPC: G01S13/58
Filed: 1966-08-23
Abstract: 1,190,007. Radar. MARCONI CO. Ltd. 25 May, 1967 [23 Aug., 1966], No. 37839/66. Heading H4D. [Also in Division G1] The speed of movement in one or more predetermined directions of a radar display moving over the surface of a cathode-ray tube screen is measured by producing optically by means of a mask or electronically by blanking, a pattern of parallel regularly spaced bars extending over a predetermined area of the screen and measuring the frequency of a speed representative major component of modulation in the output of a photo-cell viewing the patterned area. If the radar forms part of an airborne system, the forward or drift speed of the aircraft may be measured. In one embodiment, Fig. 1, a pulsed radar system comprising aerial 1, motor 2 or processing equipment 3, operates a P.P.I. display tube 4, which carries a rotatable graticule mask 5. The mask has a centre strip with opaque and transparent lines and the rest of the mask is opaque. Movement of the display beneath the mask is sensed by a photo-cell 7 feeding amplifier 8 and meter or counter 9. The latter measures the main component of frequency in the cell output, which is representative of the speed of movement of the display. If the aparatus is an airborne radar, with the strip aligned with the forward direction of the aircraft (the lines of the strip being at right angles to this direction) the forward speed is measured. Similarly, the mask having been rotated through 90 degrees, the drift speed is measurable. In the case of a ground radar, a number of targets moving at different speeds will produce a measurement of their average speed, so to investigate one of these targets alone, a gating strobe is placed round its echo. In the second embodiment, Fig. 2, a similar P.P.I. radar is provided with circuitry to blank or gate the radar video signals in such a way as to produce a graticule-like pattern over a required part. of the screen. The screen is viewed by a photo-electric measurement system as before. The circuitry includes an oscillator 12, having a frequency determining variable capacitor 13 ganged with the azimuth rotation of the aerial 1, feeding a squaring circuit 11 which controls the blanking switch 10. An adjustable phase shifter 14 can be used to alter the phase by 90 degrees between the aerial and capacitor this providing the facility for measuring forward and drift speeds as before since it turns the pattern through 90 degrees on the screen. Phase locking between the oscillator 12 and the start of the scan is provided by trigger and frequency divider circuits 15, 16.
Patent GB-1076750-A (GB)
Title: Enzyme preparations in liquid form
Inventor: YASUMATSU KATSUHARU
IPC: C12N9/96
Filed: 1964-09-16
Abstract: Stable aqueous solutions of enzymes of microbiological origin, e.g. amylase or protease, and at least 50% by weight of a sugar alcohol, e.g. sorbitol, mannitol, dulcitol or arabitol, a sugar, e.g. glucose, xylose, mannose, fructose, sorbose or sucrose, or glycerol.
Patent GB-923161-A (GB)
Title: Multiple plug die machine for extruding plastic nettings
IPC: B29C48/07
Filed: 1961-10-23
Abstract: A machine for extruding continuous, integral netting includes a hollow die head adapted to receive plastic material, including resinous plastics and metal alloys, under pressure and a plurality of die plugs, mounted in bearing surfaces in the die head for simultaneous and equi-angular rotation by power means about their longitudinal axes, each plug having at least one extrusion bore one end of which receives plastic material from the die head and the other end terminating at the end of the plug and discharging to the exterior of the die head, said head having a plurality of fixed extrusion passages extending from its hollow interior to its outer surface, each passage being intermittently open to the discharge end of an extrusion bore in a rotating plug.  Die plugs 32 (Figs. 1, 2) having extrusion bores 33 are rotated in bearing surfaces 61 formed in the fixed, two part die head 20 having an annular channel 31 for receiving plastic material and provided with fixed extrusion passages 60.  A rotary shaft 45 carries a spur gear 44 meshing with pinions 41 to continuously rotate the plugs 32 in unison whereby the discharge ends of the bores 33 and the passages 60 register intermittently to produce a welding of the strands extruded therefrom to form a tubular netting. Alternatively, the plugs may be reciprocated through 180 degrees. Alternatively (Fig. 4), adjacent plugs may be rotated in opposite directions by intermeshing gears 63 and a power driven gear 64. In an embodiment (Figs. 10, 12) for extruding flat netting, die plugs 69 having bores 68 are simultaneously reciprocated by a rack 76 and pinions 75 in the die head 65 provided with fixed extrusion passages 72.  Alternatively, (Fig. 13) adjacent plugs 85 may be rotated in opposite directions by inter-meshing gears 86 and a drive gear 87.  Other arrangements are described using an increased number of extrusion passages and bores and in which the bores themselves are arranged to register. <PICT:0923161/IV(a)/1> <PICT:0923161/IV(a)/2> <PICT:0923161/IV(a)/3> <PICT:0923161/IV(a)/4> <PICT:0923161/IV(a)/5> <PICT:0923161/IV(a)/6>
Patent GB-369254-A (GB)
Title: Improvements in and relating to electric measuring instruments
IPC: G01R19/03
Filed: 1930-12-17
Abstract: An alloy, the magnetic permeability of which decreases with increase of temperature, is composed of 66,5 per cent of nickel, 30 per cent of copper and 2,2 per cent of iron.
Patent GB-1512099-A (GB)
Title: Pesticidally active thio-and dithiophosphoric acid esters
IPC: C07F9/173
Filed: 1975-09-19
Abstract: 1512099 Phosphorothioates and -dithioates CIBA-GEIGY AG 19 Sept 1975 [20 Sept 1974 17 July 1975] 38557/75 Heading C2P The invention comprises compounds I: where X is O or S; R<SP>1</SP> is Me or Et; R<SP>2</SP> is C 3-5  alkyl; R<SP>4</SP> is Ph or CH 2 CO 2 R<SP>5</SP>; and R<SP>3</SP> and R<SP>5</SP> are each C 1-5  alkyl, C 3-5  alkenyl, C 3-5  alkynyl, benzyl or α- or #-phenethyl. Compounds I are prepared: (i) by reacting II with III in the presence of an acid binding agent: (ii) by reacting IV with R<SP>1</SP>OH and R<SP>2</SP>SH in either order, or (iii) by reacting VIII (where M is Na or K) with R<SP>2</SP>-halogen. Pesticidal compositions comprise a compound I and a carrier.
Patent GB-890888-A (GB)
Title: A flow distributor, particularly for fibre stock suspensions to be used in paper making machines
IPC: D21F1/02
Filed: 1958-12-04
Abstract: 890,888. Flow-boxes of paper-making machines &c. VOITH G.m.b.H., J. M. Dec. 4, 1958 [Dec. 21, 1957], No. 39152/58. Class 96. In a single-flow distributer particularly suitable for fibre-stock suspensions to be supplied to the slice of a paper-making machine, the flow is introduced through a single lateral inlet 4, Fig. 2, into a single deflection chamber 6 of uniform cross-section across its entire width and emerges after a single deflection from inlet direction to outlet direction in a stream extending across the full width of an outlet duct 7 past guide elements which are parallel to each other and substantially perpendicular to the direction of flow into the deflection chamber, the total flow section between the guide elements is substantially smaller, preferably 0.4 times, the cross-section of the inlet into the deflection chamber and the guide elements extend in the direction of flow for a length several times their width. The guide elements may consist of reciprocating rods 10 co-operating with stationary vanes 9 rigidly attached to the top and bottom plates of the outlet duct sloped downwards or upwards respectively, to compensate for the tapering shape of the vanes. To avoid the formation of dead-water zones, some of the suspension may be continuously withdrawn through outlets 16 and one or more side ducts 17. Alternatively, the guide elements may consist of a large number of rotary discs 20, Fig. 3, rounded at their periphery and the height of the duct is limited by intercalated partitions 23, 24.