baber/WOPTO huggingface dataset:
Patent GB-1442554-A (GB)
Title: Photoconductive device
IPC: H01J29/45
Filed: 1974-12-10
Abstract: 1442554 Photoconductive devices; pick-up tubes RCA CORPORATION 10 Dec 1974 [10 Dec 1973] 53446/74 Headings H1K and H1D A photoconductive device 18 comprises a photoconductive layer 22 of antimony trisulphide and an insulating layer 24 thereon containing dispersed conductive particles. In the vidicon target shown, which is deposited on a transparent conductive layer 20 (e.g. of tin oxide) on a transparent faceplate 14, the layer 24 may be of silicon oxide or nitride, aluminium oxide or boron nitride containing dispersed particles of Au, Ag, Cu, W or Al which reduce the dephotosensitizing voltage drop across the layer 24, which in turn reduces the dark current. The antimony trisulphide layer 22 may be of solid and/or porous material.
Patent GB-1284749-A (GB)
Title: Improvements in and relating to photographic cameras
IPC: G03B7/16
Filed: 1969-10-31
Abstract: 1284749 Photographic cameras AGFAGEVAERT A G 31 Oct 1969 [31 Oct 1968] 53486/69 Heading G2A When a flash exposure is to be made, the sensitivity of an exposure controlling photoresistor 9 is varied in accordance with the subject range but independently of the guide number of the flash apparatus to be used. As shown, a variable resistor 11 coupled to the range setter is connected in parallel with photo-resistor 9 when a flash exposure is to be made. Alternatively a mask (40), Fig. 2 (not shown), is used to alter the sensitivity of the photo-resistor. The photoresistor 9 controls the charging time of a capacitor 10, which energizes a diaphragm- or shuttercontrolling electromagnet 6.
Patent GB-1280856-A (GB)
Title: Carbon black pelleting
IPC: C09C1/58
Filed: 1969-11-04
Abstract: 1280856 Carbon black pelleting PHILLIPS PETROLEUM CO 4 Nov 1969 [5 Nov 1968] 54010/69 Heading C1A In pelleting carbon black, the mechanical energy input is regulated according to the value of the pour density or structure, which is sensed periodically. When a rotary pelleter is used the energy input may be varied by varying the speed and duration of rotation.
Patent GB-1112269-A (GB)
Title: Double load series flasher switch for vehicles
IPC: B60Q1/38
Filed: 1965-12-21
Abstract: 1,112,269. Road traffic signals on vehicles. TUNG-SOL INDUSTRIES Inc. 21 Dec., 1965 122 Dec., 1964], No. 54146/65. Heading G4Q. [Also in Division H1] A flasher unit comprises in effect two switches which may be connected in series when feeding a single lamp load (e.g. turn indicating lamps) or in parallel when feeding a double lamp load (e.g. signalling an emergency) so that the flash rate is the same in both cases. The unit may comprise a vane (2), Figs. 1 and 2 (not shown), normally deformed by a pair of heat-expansible pull ribbons (6 and 8) each carrying at its centre a contact (10 and 16) co-operating with a fixed contact (12 and 18). The unit may be connected in circuit with an emergency switch (35), Fig. 3 (not shown), so that under normal conditions a battery is connected to one fixed contact (12) and the other fixed contact is connected to the direction-indicator switch (48). When the emergency switch (35) is moved to its other position, the battery is connected to the vane (2) of the unit and the two fixed contacts are connected respectively to the left and right turn indicating lamps (44 and 50).
Patent GB-1136239-A (GB)
Title: Electroluminescent lamps with glass dielectric compositions
IPC: H05B33/20
Filed: 1965-12-21
Abstract: 1,136,239. Glass compositions. SYLVANIA ELECTRIC PRODUCTS Inc. 21 Dec., 1965 [21 Dec., 1964], No. 54165/65. Heading C1M. [Also in Division C4] A glass dielectric used in an electro-luminescent lamp comprises a rare earth metal oxide, a glass forming oxide and a divalent metal oxide, the rare earth metal oxide constituting from 10 to 40% and the rare earth metal oxide and the glass former together from 50 to 75% by weight of the glass, the balance being the divalent metal oxide and optionally other compatible constituents. The rare earth metal oxide is preferably La 2 O 3 , Eu 2 O 3  or CeO 2 ; the glass former is SiO 2 , P 2 O 5 , GeO 2  or B 2 O 3  or a mixture thereof; the divalent metal oxide is CaO, MgO, BeO, BaO, SrO or ZnO or a mixture thereof. Compatible constituents given are TiO 2 , Al 2 O 3 , ZrO 2  and alkali metal oxides. A number of examples are given.
Patent GB-1171950-A (GB)
Title: Separation of Olefines.
Inventor: SAMPSON ROY JOHN
IPC: C07C7/177
Filed: 1967-11-29
Abstract: 1,171,950. Separating olefins. IMPERIAL CHEMICAL INDUSTRIES Ltd. 1 Nov., 1968 [29 Nov., 1967], No. 54321/67. Heading C5E. Mixtures of branched and unbranched olefins are separated by selective dimerization of the branched olefin over a catalyst comprising a supported transition metal and/or a compound thereof. Preferred catalysts are oxides or sulphates of nickel or cobalt supported on alumina, silica or magnesia, particularly nickel oxide on silica/alumina. The process is suitably liquidphase, e.g. at 0-150‹ C. In examples the following mixtures are treated, the first-named being selectively dimerized: isobutene and propylene; isobutene and n-butene; and isobutene, nbutene and propylene. Selectivity is enhanced by the presence of minor amounts of polyunsaturated hydrocarbons, e.g. 0.2 wt. per cent of butadiene.
Patent GB-1274402-A (GB)
Title: Improvements in or relating to devices for measuring the duration of an electrical pulse
Inventor: EAST PETER WILLIAM
IPC: H03K5/153
Filed: 1970-11-17
Abstract: 1,274,402. Measuring pulse duration. MULLARD Ltd. 17 Nov., 1970, No. 54620/70. Heading G4H. In a device for measuring the width of a pulse, the pulse signal is fed to a Schmitt trigger 1. The reference voltage for the Schmitt trigger is derived from the input pulse by a pulse shaper 2, which may also act as a delay. The output of the Schmitt trigger enables AND gate 4 to allow clock pulses to pass to the counter 5. The pulse shaper 2 may include a limiter 11 whose output level is equal to the desired trigger voltage of the Schmitt trigger on the pulse rise. The input pulse and limited pulse are subtracted from each other by subtractor 12 and fed to pulse expander 13 whose output forms the reference for the Schmitt trigger.  In an alternative embodiment the pulse expander may be omitted and the limiter replaced by differentiating circuit. The entire circuit compensates for finite rise and fall times of the pulse being measured.
Patent GB-1102848-A (GB)
Title: Production of slurry fertilizers
IPC: C05B11/06
Filed: 1966-12-07
Abstract: Phosphate rock is treated with sufficient nitric, phosphoric or sulphuric acid or a mixture thereof to convert at least 85% of the phosphates into plant available form, an amount of vermiculite, within the limits of 30-100 g. per 1000 g. of phosphate rock is added to the reaction mixture to prevent reversion of the phosphates to a form in which less than 85% is plant available and the mixture is subsequently at least partially neutralized.  The digestion is preferably continued for at least 15 minutes after the vermiculite, which is preferably smaller than 28 Tyler mesh, has been added and the mixture then neutralized with anhydrous ammonia to yield a slurry of at least pH3. Additives may be added to give a complete fertilizer; potassium chloride is added after the mixture has been sufficiently neutralized to avoid the formation of hydrogen chloride.
Patent GB-1492068-A (GB)
Title: Method for removing sulphur dioxide from an exhaust gas
IPC: C01F11/46
Filed: 1974-12-18
Abstract: 1492068 Removing sulphur dioxide from exhaust gases KUREHA KAGUKU KOGYO KK 18 Dec 1974 [25 Dec 1973] 54826/74 Heading ClA Sulphur dioxide is removed from exhaust gas by: (1) contacting the exhaust gas with an aqueous treating solution containing an alkali metal or ammonium salt of an organic acid other than formic acid so as to react sulphur dioxide contained in said gas with said organic acid salt to form an alkali metal or ammonium sulphite in the solution, (2) oxidizing alkali metal or ammonium sulphite to alkali metal or ammonium sulphate in at least a proportion of the alkali metal or ammonium sulphite-containing solution formed in step (1), using oxygen or an oxygen-containing gas, any alkali metal or ammonium sulphite-containing solution not subjected to oxidation being recycled for use as aqueous treating solution in step (1), (3) contacting at least a proportion of the alkali metal or ammonium sulphate-containing solution formed in step (2) with a calcium compound to convert alkali metal or ammonium sulphate to calcium sulphate, any alkali metal or ammonium sulphite-containing solution not contacted with calcium compound being recycled for use as treating solution in step (1), (4) filtering off the calcium sulphate formed in step (3), and (5) recycling the filtrate from step (4) for use as aqueous treating solution in step (1), the process being conducted so as to maintain the concentration of said alkali metal or ammonium sulphite in the treating solution used in step (1) at a level not above 1% during said contacting thereof with the exhaust gas. Oxidation in step (2) may be accelerated by addition of ferrous sulphate or a ferric salt. The concentration of calcium sulphate remaining in the filtrate obtained from step (4) may be reduced prior to recycling in step (5) by adding alkali metal or ammonium sulphite and filtering off the calcium sulphite so formed.
Patent GB-1396599-A (GB)
Title: Housing and housing cover for motor vehicle steering gears
IPC: B62D3/02
Filed: 1972-11-28
Abstract: 1396599 Vehicle steering mechanisms ZAHNRADFABRIK FRIEDRICHSHAFEN AG 28 Nov 1972 [2 Dec 1971] 54848/72 Heading F2Q A steering gear housing 2 has a cover 1 incorporating a bearing for a steering shaft 6, and an annular groove 7 in the cover 1 engages an annular end part of the housing 2, both radially inner and outer surfaces 4, 5 being effective for centering the housing 2 and housing cover 1 relative to each other. A sealing element comprises a resilient ring 8 disposed in an annular groove 9. Alternatively, a sealing washer or sealing compound may line the bottom of the groove 7.
Patent GB-1075990-A (GB)
Title: Vertical conveying installation
IPC: B65G37/00
Filed: 1965-12-29
Abstract: 1,075,990. Endless conveyers. BETEILIGUNGSUND PATENTVERWALTUNGSG.m.b.H. Dec. 29, 1965 [Dec. 30, 1964], No. 55096/65. Heading B8A. Each bolt 1, 2 of a vertical conveyer for raising or lowering loose material 9 is provided with a layer 3, 4 of foamed plastics or rubber. The layers have flange portions 5, Fig. 1 (not shown), and when the belts enter the vertical run the flanges are compressed such that joints 7 between the flanges are substantially coplanar with the joint 8 between the foam layers, Fig. 2 (not shown). When the conveyer is loaded, escape of the material 9 is prevented by pressure at the joints 7. Rollers (not shown) press the belts 1, 2 toward each other.
Patent GB-1079615-A (GB)
Title: Silver recovery process
IPC: C22B11/08
Filed: 1965-12-30
Abstract: A method for recovering silver from solution of its fulminate, nitrate, thiosulphate or complex cyanide comprises adding to the solution at least 0.25 mole of an alkali metal hydrosulphite compound per mole of silver in the solution maintaining the resulting solution until precipitation stops and removing the precipitated silver from the solution.  The temperature of the solution is preferably at least 150 DEG F.  The hydrosulphite compound may be the sodium or potassium salt or the compound thereof with acetaldehyde or formaldehyde (e.g. sodium acetaldehyde sulphoxylate). There may also be added to the solution dextrose or other carbohydrates, hydroxylamine or other hydroxyl containing amines or their chlorides or sulphates, ammonium or alkali metal hypophosphites or ethylenediamine mono-di-tri-or tetra-acetic acid or other alkali metal alkanoates.
Patent GB-1404589-A (GB)
Title: Electrical information store
IPC: G11C11/405
Filed: 1971-11-30
Abstract: 1404589 Data store circuits PLESSEY CO Ltd 27 Nov 1972 [30 Nov 1971] 55473/71 Heading H3T [Also in Division G4] An electrical information matrix comprises a crossed array of input column conductors I 1 , I 2  and output row conductors OA, OB and in which each cell comprises a write transistor W, a storage capacitor C, priming and read transistors F, R having their source to drain paths connected in series between a supply terminal P and a row conductor whereby an information unit may be stored at C if the write transistor W is enabled and an output signal obtained on the row conductor if a unit is stored at C and the read transistor R is enabled. The transistors may be MOS transistors. Complex signals to be examined are stored in selected rows by pulsing the row select conductors SA, SB as required. To compare corresponding signal elements of different complex signals, the stored elements are read out by pulsing the appropriate column select conductor. The read-out process is non- destructive as the charge on capacitor C merely renders transistor F conductive.
Patent GB-1404267-A (GB)
Title: Water purifier
IPC: C02F1/00
Filed: 1973-12-05
Abstract: 1404267 Oligodynamic water purifier CONSOLIDATED FOODS CORP 5 Dec 1973 [7 Feb 1973] 56355/73 Heading C1C A water purifier comprises a tank having a water inlet and a water outlet, a waterpermeable treatment bed in said tank between said inlet and said outlet and comprising activated carbon and oligodynamic silver capable of killing disease-causing bacteria in water, and a porous filter at the outlet side of said treatment bed having a porosity such that the filter clogs sufficiently substantially to reduce the water flow rate before the passage of a volume of water through the bed sufficiently large to reduce significantly the water-purifying effect of the bed. A storage tank may be connected after the outlet of the above tank, to hold the treated water, which contains silver, to allow the purifying effect of the silver to continue. A portable water purifier which allows collection of the purified water in a drinking cup is also claimed.
Patent GB-1300286-A (GB)
Title: Welding filler material
IPC: C22C38/58
Filed: 1970-11-27
Abstract: 1300286 Welding by fusion GEBR BOHLER & CO AG 27 Nov 1970 [29 Nov 1969] 56394/70 Heading B3R [Also in Division C7] A welding filler material comprises, in weight per cent: with the balance Fe and impurities. The material may be used as a bare wire or strip, or in a covered electrode having a core wire of the above composition and a covering containing 20-60% alkaline earth metal carbonates, 10-50% of one or more fluorides, e.g. CaF 2 , up to 10% TiO 2  and up to 20% deoxidizer such as ferrosilicon or ferromanganese. Alternatively part of the alloy constituents may be contained in the covering. Further, the electrode may be in the form of a cored tubular wire, the core preferably containing part of the alloy constituents. The welding filler material may be used in MIG, TIG, or submerged arc processes to provide austenitic surface layers or welds.
Patent GB-1206594-A (GB)
Title: Improvements relating to moisture detectors
IPC: G01N27/04
Filed: 1966-12-19
Abstract: 1,206,594. Moisture detectors. BRITISH IRON & STEEL RESEARCH ASSOCIATION. Dec.19, 1967 [Dec.19, 1966], No.56831/66. Heading G1N. Environmental moisture causes conduction between the exposed parts of two electrodes (11), Fig.1, (not shown) set spaced apart in an insulating block (10), the electrodes being connected (at 20, 21), Fig.2, (not shown) in a transistor trigger circuit which operates a relay (27) when the moisture exceeds a level set by a variable resistor (22) in the circuit. The relay moves a contact (28) to a position (W) in which a lamp (30) and a clock (31) are operated, the latter measuring the duration of the excess moisture level. A recorder is also connected by means of further contacts (67, 68), also Fig.4, (not shown), and comprises a pair of coils (60, 61) forming a solenoid (40), Fig.3, (not shown) whose armature (62) is moved from a first to a second position when the relay (29) operates. The armature carries a pen (42) acting on a paper tape (43) moving at constant speed, to record the duration of the excessive moisture level.
Patent GB-1285613-A (GB)
Title: Process for preparing coloured resists by means of reactive dyestuffs
IPC: D06P5/12
Filed: 1969-11-20
Abstract: 1285613 Printing processes etc FARBWERKE HOECHST AG 20 Nov 1969 [22 Nov 1968] 56859/69 Heading B6C In a chemical method of printing a design upon a material comprising cellulusic fibres a printing paste is used comprising a reactive dyestuff having at least one group of the formula in which R and R<SP>1</SP> end represents an aliphatic or cyclo-aliphatic radial or may be members of a cyclic radical an alkaline agent and in addition a secondary aliphatic or cyclo-aliphatic amino compound or a salt thereof. The material is treated before printing by coating or impregnating or printing with. A reactive dyestuff in which the reactivitity to the hydroxy groups of the cellulose fibres becomes motivated by reaction with the secondary amino compound. The resultant printed product is subsequently fixed by steering for 2 to 15 minutes at 98‹C to 125‹C. The printing paste may also contain urea and a thickening agent, with or without a wetting and/or emulsifying agent.
Patent GB-1206439-A (GB)
Title: 7-substituted tetracyclines
Inventor: ZAMBRANO RONALD THEODORE
IPC: H01J37/18
Filed: 1967-12-15
Abstract: 1,206,439. 7 - Bis - substituted hydrazino tetracyclines. AMERICAN CYANAMID CO. 15 Dec., 1967 [10 Jan., 1967; 3 March, 1967], No. 57186/67. Heading C2A. The invention comprises 7-[bis-substituted hydrazino] tetracyclines of formulµ wherein R is C 1 -C 6  alkoxy, phenyl C 1 -C 6  alkoxy, phenoxy, amino, C 1 -C 6  alkylamino, phenyl C 1 -C 6  alkylamino or anilino; R 1  is H, alpha-CH3 or beta-CH 3 ; R 2  is H or beta OH with the proviso that when R 1  is beta-CH 3  then R 2  is H; R 1  and R 2  taken together is CH 2 ; R 3  is H or OH with the proviso that when R 3  is OH then R 1  is CH 3  or R 1  and R 2  taken together is CH 2 ; and X is F, Cl or Br. The compounds are prepared by reacting a compound of Formula (I) or Formula (II) wherein the 7-position of the tetracycline nucleus is H, with a substituted azodicarbonyl derivative of formula wherein R has the above meaning, in an acidic medium, e.g. an inert organic solvent such as tetrahydrofuran and a strong acid such as methane-sulphonic acid. The corresponding 7-amino tetracyclines are obtained by treating the compounds of Formulµ (I) and (II) with 57% hydriodic acid at 100‹ C. or with hydrogen in the presence of a catalyst. The 7-[1,2-bis- (carbobenzyloxy) hydrazino] tetracycline may be subjected to reductive alkylation by treatment with a carbonyl compound of formula wherein R 4  is H or C 1 -C 6  alkyl and R 5  is H or C 1 -C 6  alkyl in the presence of a reducing agent (e.g. hydrogen), a catalyst and an inert solvent. The compound produced is the 7- mono-(C 1-6  alkyl) amino or 7-di-(C 1-6  alkyl) amino tetracycline wherein R 1 , R 2 , R 3  and X of the 7-hydrazino compound remain unchanged. A typical compound is 7-[1,2-bis-(carbobenzyloxy) hydrazino] -6-demethyl-6-deoxytetracycline. Salts may be formed with mineral acids (e.g. hydrochloric acid) and organic acids (e.g. trichloroacetic acid).
Patent GB-1394367-A (GB)
Title: Disperse azo dyestuffs
IPC: C09B29/06
Filed: 1972-12-14
Abstract: 1394367 Thiophene derivatives IMPERIAL CHEMICAL INDUSTRIES Ltd 15 Jan 1973 [28 Jan 1972] 57675/72 Divided out of 1394365 Heading C2C [Also in Division C4] 2 - Amino - 3 : 5 - dinitrothiophene is obtained by reacting the sodium salt of cyanoacetic acid with the dimer of mercaptoacetaldehyde, acetylating to give 2-acetylaminothiophene-3-carboylic acid and dinitrating with subsequent deacylation. 2 - Amino - 3 : 5 - dinitro - 4 - methylthiophene is obtained by reacting chloroacetone with sodium hydrosulphide in aqueous methanol, and treating the resulting solution with ethylcyanoacetate in the presence of triethylamine to give 2 - amino - 3 - ethoxycarbonyl - 4 - methylthiophene. This is acetylated, hydrolysed to 2- acetylamino - 4 - methylthiophene - 3 - carboxylic acid, decarboxylated, dinitrated and finally deacylated. 2 - Amino - 3 : 4 : 5 - trinitrothiophene is prepared by reacting 2-bromo-3 : 4 : 5-trinitrothiophene with ammonia in tetrahydrofuran. 2 - Amino - 3 - nitro - 5 - (N : N - diethylcarbamoyl) - thiophene is obtained by treating 2 - bromo - 3 - nitrothiophene - 5 - carboxylic acid with thionyl chloride, and subsequently reacting with diethylamine followed by treatment with ammonia to replace the bromine atom by an amino group. 2 - Amino - 3 - nitro -5 - methoxycarbonylthiophene is obtained by esterifying 2-bromo-3- nitrothiophene-5-carboxylic acid, and treating the bromoester with cone. aq. ammonia in the presence of dimethyl formamide. 2 - Amino - 3 - nitro - 5 - cyanothiophene is obtained by converting the oxime of 2-acetylamino - 5 - formylthiophene to 2 - acetylamino- 5-cyanothiophene by treatment with acetic anhydride at the boil, nitrating the resulting compound, and finally deacetylating.
Patent GB-1249832-A (GB)
Title: Stuffer crimper
IPC: D02G1/12
Filed: 1969-11-26
Abstract: 1,249,832. Stuffer-box crimping; feed rolls. TEIJIN Ltd. 26 Nov., 1969 [29 Nov., 1968; 24 Oct., 1969], No. 57948/69. Heading D1F. A stuffer crimper apparatus comprises a pair of feed rollers 3, 3' and keep plates 7, 7' held against the planar faces of the feed rollers and rotatable about axes a offset from the line of the nip b between the feed rollers, but not passing through the plane including the rotational axes of the rollers or the plane perpendicular thereto and including the nip between the rollers. The rollers 3, 3' are mounted for rotation on shafts 12, 12', and the keep plates 7, 7' are freely rotatable in holders 9, 9' frictional contact with the planar surfaces of the rollers rotating the plates. The axes a of the keep plates 7, 7' are in alignment. In operation, the yarn 1 is fed into the crimping chamber 4 by the rollers 3, 3', the keep plates 7, 7' maintaining the yarn within the nip b. The yarn is pressed in the chamber 4 by a weighted flap 6. The location of the keep plates gives optimum life for the plates by spreading the wearing of the plate surface over a larger area.
Patent GB-1151619-A (GB)
Title: Improvements relating to Liquid-Cooled Cylinder Heads For Internal Combustion Engines
IPC: F02F1/40
Filed: 1967-12-29
Abstract: 1,151,619. Liquid cooled cylinder heads. DAIMLER-BENZ A. G. Dec.29, 1967 [Dec. 29, 1966], No. 59114/67. Heading F1B. The valve passages 8a, b, 9a, b, and combustion chamber 7 are so arranged as to form radially disposed cooling passages 14a, b, 15a, b, at least some of which e. g. 14a, b, have disposed therein at there narrowest portions partitions 25a, b, with orifices 27a, b, therein to increase the velocity of flow of the coolant towards the centre of the head. The coolant enters chambers 21a, b, 22a, b, through a pair of inlets 16a, b ... 19a, b, for each chamber and flows radially inwards through the passages 14a, b, 15a, b, and after flowing around chamber 7 escapes upwardly through outlet (23 Fig. 2 not shown). Vapour collecting in chambers 21a, b, escapes through narrow passages (29a, b Fig. 5B not shown) leading to outlet (23). The orifices 27a, b, are directed downwardly to direct the coolant towards the centre of the lower wall 20 of the head.