baber/WOPTO huggingface dataset:
Patent GB-1498952-A (GB)
Title: Process timers
IPC: G04G15/00
Filed: 1975-01-13
Abstract: 1498952 Transistor oscillators LUCAS ELECTRICAL Ltd 13 Jan 1975 [11 Jan 1974] 01529/74 Heading H3T [Also in Division G3] In a timed control arrangement for a vehicle window demister element, the element is initially switched ON for a period of about ten minutes and is then repetitively switched ON and OFF, e.g. three minutes OFF and one minute ON. In the control circuit arrangement, Fig. 1, current in the demister element 42 is controlled via a transistor 41. When the circuit is switched ON an I.C. monostable MV 17 takes up a state in which a transistor 27 is ON causing an I.C. astable MV 18 to take up a state in which charging of a capacitor 34 is inhibited and a transistor 37 is turned ON consequently turning ON a transistor 41 and the element 42. A capacitor 23 charges and when its potential at threshold pin 6 reaches 2/3 of the supply voltage, e.g. in 10 mins., capacitor 23 is discharged to ground via pins 7 and 1. This causes transistor 27 to turn OFF so that the potential at reset pin 4 of I.C. MV 18 rises, causing transistors 37, 41 to turn OFF thus deenergizing the demister element. The control is then taken up by I.C. MV 18 which in co-operation with a capacitor 34 causes the demister to be switched ON/OFF repetitively at the period of the multivibrator 18. In an alternative embodiment, Fig. 2 (not shown), a single integrated circuit dual timer is used.
Patent GB-986578-A (GB)
Title: 5-substituted dibenzocycloheptadienes and the preparation thereof
IPC: C07C211/32
Filed: 1961-10-10
Abstract: The invention comprises compounds of formula <FORM:0986578/C2/1> wherein R is H, halogen, CF3 or C1-8-alkyl, and a method of making them by reacting the corresponding dibenzocycloheptadiene-5-one with an ethylmagnesium halide in an inert organic solvent and hydrolysing the complex obtained. Specification 986,579 also is referred to.
Patent GB-1524731-A (GB)
Title: Determination of uric acid
IPC: C12Q1/62
Filed: 1976-01-15
Abstract: 1524731 Determination of uric acid WELLCOME FOUNDATION Ltd (Deutsche Wellcome GmbH) 14 Jan 1977 [15 Jan 1976] 01557/76 Heading G1B The concentration of uric acid in fluids free of red blood cells, buffered to alkaline pH, is determined by dividing a sample of test fluid into two portions (a blank and a test portion), admixing the blank portion with sufficient uricase to convert all the uric acid therein to allantoin, admixing each portion with an excess of 2,6-dichloroquinonechlorimide solution, allowing the portions to incubate at room temperature, determining the difference in extinction of the two portions at a suitable wavelength and calculating the concentration of uric acid therefrom.
Patent GB-596655-A (GB)
Title: Improvements in lenses
IPC: G02B3/04
Filed: 1945-01-19
Abstract: 596,655. Multifocal lenses. BIRCHALL, H.J. Jan. 19, 1945, Nos. 1566/45 and 4079/46. [Class 97 (i)] A multifocal lens a, Fig. 1, has a curved surface c whose lines of intersection d with planes perpendicular to the plane underside of the lens and parallel to the medial plane whose line of intersection with the surface c is the line b, are involutes, the curvature of which increase from one edge of the lens to the other when the surface is convex and decrease when the surface is concave. The lines of intersection e formed by planes orthogonal to the lines band dare also involutes, the curvature of which decreases from the medial plane to the edges g, g<1> when the surface c is convex and increases when the surface c is concave. Each or both ends of the lens may be merged into a spherical surface of power substantially equal to the power of the lens at that end. The form of the lens may be obtained by moulding or by grinding, for which purpose a machine is described. In the machine, Fig. 2, a table 6 carrying fixed guides 7 in which a lens holder 8 is slidable, is supported on gear-boxes 3, 2 and rotated by gearing in said boxes, driven by a power source through belt 5 and shaft 4. The holder 8 is fixed to curved formers 9 resting on knife edges 13 on the table. Trunnions 14 on the formers 9 engage arms 15, which extend through parallel slots 16 in the table and are constrained, by said gearing, to move along the slots. Thus, the holder 8 with lens 10 has a rotational and linear movement and also tilts by virtue of the curved formers 9. Brackets 17 on gear-box 3 have bearing pins 18 supporting the rods 19 of a rocker bar 20, carrying a housing 21 and the driving shaft 22 of an abrasive wheel 23, a pulley 24 fast on the shaft 22 having belt and pulley connection with the power source. To the rocker bar 20 is connected a tiltable arm 31 linked through a ball-jointed coupling rod 33 to a bar 35 actuated by mechanism in the gear-box 2. Hence, as the table 6 rotates, the abrasive wheel 23 is given an independent tilting motion, the combined motions serving to give the lens 10 the required shape. Specification 413,670 is referred to.
Patent GB-126664-A (GB)
Title: Improvements in Rockets.
Inventor: THOMSON NORMAN KILBOURN
IPC: F42B10/06
Filed: 1917-01-31
Abstract: 126,664. Thomson, N. K., and Elliott, J. C. Jan. 31, 1917. Line-throwing apparatus.-Holes 11 are made in the wings of a rocket 2 for the attachment of a line.
Patent GB-1427885-A (GB)
Title: Conductive and shrinkabel ethylene polymer shaped articles
IPC: C08K3/04
Filed: 1974-01-14
Abstract: 1427885 Moulded article MAGYAR KABEL MUVEK 14 Jan 1974 [23 Jan 1973] 1627/74 Heading B5A [Also in Division C3] Conductive heat-shrinkable shaped articles composed of an ethylene polymer and 15 to 20 weight per cent of conductive carbon black and having an A.C. resistance remaining unchanged and a D.C. resistance increasing by at least one order of magnitude upon mechanical deformation or heat-shrinking, are prepared by mixing the polymer with the conductive carbon black for 30 to 120 minutes at a temperature above the crystalline melting point of the polymer, converting the resulting composition into an article, e.g. by extrusion or calendering, crosslinking the article by irradiation or with a chemical cross-linking agent and subjecting the cross-linked article to physical deformation associated with stretching. The carbon black may be acetylene black of particle size 1-300 nm. The compositions may be used to make sheets and tubes for cable terminations. In examples tubes are extruded from compositions comprising acetylene black and (1) polyethylene and polyisobutylene, cross-linked by irradiation or (3) ethylene/butene copolymer, cross-linked with p-methoxybenzoyl peroxide, and the tubes expanded; and sheets are calendered from compositions of acetylene black, polyethylene and polyisobutylene, cross-linked by irradiation, biaxially stretched and slit to form heat-shrinkable tapes.
Patent GB-416245-A (GB)
Title: Manufacture of 1:4-diaminoanthraquinones
IPC: C09B1/22
Filed: 1934-01-17
Abstract: 1 : 4-Diaminoanthraquinones are obtained by causing a 9 : 10-anthraquinone-1 : 4-quinone, diimine, or imino-quinone which may be substituted in the non-quinonoid nucleus by halogen, hydroxyl, amino, alkyl, alkylamino, arylamino, alkoxy-, or sulphonic groups, to react in or without a solvent, with a 2 : 3-dihydro-1 : 4-diaminoanthraquinone which may be further substituted by halogen, hydroxyl, amino, alkylamino, arylamino, alkoxy, nitro or sulphonic groups.  The product, according to the components selected, is an individual 1 : 4-diaminoanthraquinone or a mixture of a 1 : 4-diaminoanthraquinone with a 1 : 4-dioxy-, 1 : 4-amino-oxy, or another 1 : 4-diaminoanthraquinone, mutual oxidation and reduction having taken place between the two reactants.  According to examples, dihydro-1 : 4-diaminoanthraquinone reacts in sulphuric acid solution at 90 DEG  C. with 9 : 10-anthraquinone, 1 : 4-quinoneimine and 1 : 4-diiminoanthraquinone to give a mixture of 1 : 4-diaminoanthraquinone and 1 : 4-diamino-oxyanthraquinone, and pure 1 : 4-diaminoanthraquinone respectively.  2 : 3 - Dihydro - 1 : 4 - diaminoanthraquinones substituted by the above-mentioned groups are obtained by treating the corresponding 1 : 4-dioxyanthraquinones with aqueous ammonia under pressure, or by reducing the corresponding 1 : 4-diamino-2-sulphonic acid at high temperatures with alkali and alkali hydrosulphite.  1 : 4 : 9 : 10-Anthradiquinones substituted or not as described above are obtained by oxidizing the corresponding 1 : 4-dioxyanthraquinones with manganese dioxide and sulphuric acid.  1 : 4-Diiminoanthraquinones and 1 : 4-quinoneiminoanthraquinones substituted or not are obtained by oxidizing the corresponding 1 : 4-diamino and 1 : 4-amino-oxyanthraquinones with manganese dioxide and sulphuric acid.
Patent GB-606754-A (GB)
Title: Compressed air blast circuit breaker of pillar type
IPC: H01H33/00
Filed: 1946-01-18
Abstract: 606,754. Gas-blast circuit-breakers. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. Jan. 18, 1946, No. 1734. Convention date, Feb. 3, 1945. [Class 38 (v)] In order to support a circuit-breaker 3 in the event of bursting of the supporting pillar insulator 12 through which the compressed-air supply is taken, the insulator houses a solid insulating cylinder 13, for example of synthetic resin, mounted under tension in apertured flanges 14, 15 so as to hold them against the insulator 12. The Specification as open to inspection under Sect. 91 states that member 13 may be of " Plexiglass " (Registered Trade Mark). This matter does not appear in the Specification as accepted.
Patent GB-840534-A (GB)
Title: Improvements relating to street lighting lanterns
Inventor: COOK SIDNEY ARTHUR
IPC: F21S8/08
Filed: 1958-01-17
Abstract: 840,534. Lighting fittings. SIEMENS EDISON SWAN Ltd. Jan. 19, 1959 [Jan. 17, 1958], No. 1736/58. Class 75(4). A street lantern of elongated form rotatable about its longitudinal axis when mounted on a lamp column includes an inclinometer device comprising a scale bearing surface gradient markings and a pointer 35 the scale being movable relatively to the pointer in response to rotation of the lantern about its axis so as to enable the lantern to be adjusted about its axis in correspondence with the gradient of the surface to be illuminated by the lantern prior to the final fixing operations for securing the lantern to the lamp column. The lantern comprises a barrel shaped vessel 1 having two interconnected parts and with flanged ends closed by metal plates 2, 3. The plate 3 is mounted in a recess in a hood of a casting 5 mounted on a lamp standard, in the correct position indicated by the pointer on the scale on the plate 2. Supported in an aperture in the plate 2 by a rubber seal 12 is a jacket 4 for an electric discharge lamp. The jacket is also supported by stirrups 21 connected to rods 23 connected between the plates and secured at one end in the hood 29 of the casting 5. The rods also support a reflector 20. A tube 25 between the plates provides a passage for the electric wires from a terminal block 32 on the casting to a connector 19 secured to a porcelain end cap 10 on the jacket 4. A cover 16 is secured over the end of the lantern by studs 17 on the plate 2 engaging in slots in the cover which carries spring clips 18 abutting the plate. Specification 688,775 is referred to.
Patent GB-1276061-A (GB)
Title: Tetronic acid derivatives, process for the manufacture thereof, and compositions containing such compounds
Inventor: TURNER RALPH WILLIAM
IPC: C07D307/60
Filed: 1970-01-14
Abstract: 1276061 Immunosuppressant &c compositions IMPERIAL CHEMICAL INDUSTRIES Ltd 4 Dec 1970 [14 Jan 1970] 1836/70 Heading A5B [Also in Division C2] Pharmaceutical compositions comprise a compound of the general formula (R'=H or C 1-6  alkyl; R<SP>2</SP>=Ph, halophenyl, dihalophenyl, naphthyl or 5- or 6-membered heteroaromatic radical containing N, S or O, optionally Me-substituted and optionally fused to a benzene or halobenzene ring) or salt thereof, with or without an antibacterial, antiinflammatory and/or uricosuric agent, together with a carrier. The primary active ingredients have immunosuppressant activity.
Patent GB-346473-A (GB)
Title: Improvements in and relating to methods of making compositions of matter having cutting or abrading characteristics
IPC: B24D3/08
Filed: 1930-01-18
Abstract: Cutting and abrading compositions suitable for making bits, milling cutters, shapers, drills, and dies, especially dies for drawing wire, are obtained by coating fine particles of cutting agent with metal of lower melting point by electro-deposition, compacting the particles, and sintering at a temperature to melt the metal but not the cutting agent.  Cutting agents specified are tungsten carbide, silicon carbide, chromium carbide, and mixtures thereof.  Coating agents specified are cobalt, copper, nickel, iron, alloys, or mixtures thereof.  Two or more layers of the same or different metal may be used.  In an example, tungsten carbide passing through a screen of 325 meshes per sq. in. is coated with 0,1-50,0 per cent of cobalt deposited electrolytically from an aqueous solution cobalt ammonium sulphate, cobalt sulphate, or cobalt chloride; preferably 3,5-13,0 lb. of cobalt are deposited on 96,5-87,0 lb. of carbide.  The coated particles are washed, dried, compacted at 1000-300,000 lb. per sq. in., and sintered at about 1800 DEG  F. under neutral or reducing conditions, e.g. in an atmosphere of hydrogen.  The material is then ground, sawn, filed, or otherwise shaped, and again sintered under non-oxidizing conditions at about 2650 DEG  F.  The loose coated particles may be pressed to shape before, during, or both before and during the first sintering.ALSO:Cutting and abrading compositions suitable for making bits, milling cutters, shapers, drills, and dies, especially dies for drawing wire, are obtained by coating fine particles of cutting agent with metal of lower melting-point by electrodeposition, compacting the particles, and sintering at a temperature to melt the metal but not the cutting agent.  Cutting agents specified are tungsten carbide, silicon carbide, chromium carbide, and mixtures thereof.  Coating agents specified are cobalt, copper, nickel, iron, alloys, or mixtures thereof.  Two or more layers of the same or different metal may be used.  In an example, tungsten carbide passing through a screen of 325 meshes per sq. in. is coated with 0,1-50,0 per cent of cobalt deposited electrolytically from an aqueous solution of cobalt ammonium sulphate, cobalt sulphate, or cobalt chloride; preferably 3,5-13,0 lb. of cobalt are deposited on 96,5-87,0 lb. of carbide.  The coated particles are washed, dried, compacted at 1000-300,000 lb. per sq. in., and sintered at about 1800 DEG  F. under neutral or reducing conditions, e.g. in an atmosphere of hydrogen.  The material is then ground, sawn, filed, or otherwise shaped, and again sintered under non-oxidizing conditions at about 2650 DEG  F.  The loose coated particles may be pressed to shape, before, during, or both before and during the first sintering.
Patent GB-938804-A (GB)
Title: Purine ketosides
IPC: C07H13/08
Filed: 1960-01-19
Abstract: The invention comprises a nucleoside of the general formula <FORM:0938804/IV(a)/1> wherein R1, R2 and R3 each represent a hydrogen or halogen atom or a lower alkyl, lower aralkyl, lower aryl, mercapto, lower alkylmercapto, lower aralkylmercapto, lower arylmercapto hydroxy, lower alkoxy, lower aralkoxy or lower aryloxy group or the group NR4R5 wherein R4 and R5 are each a hydrogen atom or a lower alkyl, lower aralkyl or lower aryl group and X is the residue of a C5-C7 keto sugar with the proviso that when R2 and R3 both represent hydrogen and X represents D-psicofuranosyl, R1 is represented only by a halogen, lower alkyl, lower aralkyl, lower aryl, lower arylmercapto, lower aryloxy or -NR4R5 wherein R4 and R5 do not both represent hydrogen and the preparation of the compounds of the above formula, devoid of the restriction imposed by the proviso, by reacting a 9-halo-mercuri-derivative of an appropriate purine with a polyacyl ester of a 2-halogeno-ketose (wherein the acyl radicals are those corresponding to a C1-C12 hydrocarbon carboxylic acid) and deacylating the product.  Lower alkyl groups contain 1-8, lower aryl 6-12 and lower aralkyl 7-13 carbon atoms respectively. Purines containing free amino groups are converted into the corresponding acyl derivatives before reaction and purines containing free hydroxyl groups are converted into their aralkoxy ethers. Alkyl-, aralkyl- and aryl-mercapto groups may be removed by hydrogenolysis in the presence of Raney-nickel and aralkoxy ethers may be subjected to hydrogenolysis to yield the free hydroxy compound.  Compounds wherein one or more groups R1, R2 and R3 represent NR4R5 may be prepared from the corresponding halo compounds by reaction with an amine R4R5NH.  The compounds of the invention may be converted into the corresponding acylates by reaction with an anhydride or acid halide of a hydrocarbon carboxylic acid in varying molar proportions and separating the products.  Amino, mercapto and primary alcoholic groups may be blocked before reaction with trityl halide and the secondary alcoholic groups only acylated, the trityl groups being removed subsequently by hydrogenolysis and if desired, the acyl derivatives so formed subjected to further acylation to obtain higher polyacylates.  D-Psicose pentaacetate is prepared from D-psicose and acetic anhydride and is treated with hydrogen chloride to give tetra-acetyl-D-psicosofuranosyl chloride.  Similarly is prepared D-fructofuranosyl chloride tetrabenzoate and other ketose chloride polybenzoates.  Pharmaceutical compositions showing antibacterial and antitumour properties contain the compounds of the invention and are formulated as tablets, powders, capsules, solutions or suspensions suitable for oral and parenteral administration. Specifications 691,427, 713,286, 744,896 and 938,805 are referred to.
Patent GB-798549-A (GB)
Title: Improvements in and relating to electric amplifiers
IPC: H04N5/53
Filed: 1955-01-21
Abstract: 798,549. Television. FERNSEH GES. Jan. 21, 1955 [Jan. 22, 1954], No. 1890/5. Class 40 (3). [Also in Group XL (c)] An amplifier with protection against overload and which is more particularly intended as a video modulation amplifier in a television transmitter comprises resistance-capacity coupled stages 16, 17 and a cathode-follower output stage 25. A further cathode-follower 22 fed in parallel with the output valve 25 feeds a gain-control circuit comprising a rectifier 27 provided with a delay bias, by means of resistors 28, 29, an amplifier 30, and a voltage-doubling rectifier circuit 1, 2, 3. The delay is such that the gain control circuit only becomes operative when the video amplitude exceeds 95 per cent of the maximum allowable peak-white level. Beyond this level a gain-reducing voltage is developed across circuit 3 and is applied to the grid of the stage 16 via a filter 5, 6 of time-constant of the order of the period of one line, a cathode-follower 7 and a gate circuit 9. The gate circuit 9 comprises two pairs of oppositely-poled diodes, the pairs also being oppositely poled: the gate is normally closed, but is opened during the line flyback period by line pulses applied in appropriate sign to the commoned cathodes and also to the commoned anodes. The D.C. level is restored at the grids of both the stages 17, 25 by means of similar gated clamping circuits 18, 24 respectively. To prevent overload by a signal increasing too rapidly to be dealt with by the gain control circuit, a limiter is provided, operating at 25 per cent above maximum allowable peak white level: it comprises a series diode 19 with delay bias derived from resistors 20, 21. In a modification, Fig. 2 (not shown), the gate circuit 9 is omitted, the gain control voltage being applied instead to the cathode of the valve 16 : the diodes 1, 2 must then be reversed. The gain control amplifier 30 may be of narrower band width than the main amplifier.
Patent GB-675725-A (GB)
Title: Control device for controlling the aim of a gun or other device requiring to be directed towards a target
IPC: F41G5/08
Filed: 1951-01-25
Abstract: 675,725. Ordnance mountings. AKTIEBOLAGET BOFORS. Jan. 25, 1951. [Jan. 27, 1950] No. 1954/51. Class 92 (i). A gun is directed towards a target through the medium of a control device comprising a frame, such as a closed ring or of H-form, angularly movable upon a supporting member about an axis which is transverse to that about which the supporting member moves with respect to a fixed mount, the frame being such that the forearms of a man may comfortably rest thereon and remain stationary with respect thereto during the movements of the frame by the forearms. In the construction shown the operator seated at 58 rests his arms in members 18, 19, on the lower bar of a frame 8 and grips two rubber sleeves 16, 17, arranged near a firing switch 14, a blocking device 15 for the switch, and a contact 13 connected to gyros for the optical sight 60. To move the gun 50 in elevation the operator moves the frame about the axis of the lower bar of the frame, such action causing gears 9, 10, to actuate a magslip 11 which is connected to the gun traversing gear 67 via lead 36, receiver and amplifier 61, electro-hydraulic control device 63, arms 64, 65, and synchronous element 66 as shown in Fig. 3. To move the gun platform in azimuth the frame 8 together with the support 5 in which it is journalled are rotated with respect to a mounting member 1 in which the support 5 is rotatably seated at 3, 4. Such rotation actuates a magslip 6 which serves to rotate the gun platform via mechanism as shown, similar to that provided for the elevating mechanism.
Patent GB-1043823-A (GB)
Title: Ferroelectric ceramic and transducer embodying same
IPC: H01L41/18
Filed: 1964-01-16
Abstract: A PZT ferroelectric ceramic contains, as a partial substituent for one of the principal constituents, an element which (a) has a valency lower by one than that of one of the principal constituents; (b) has a position in a lower group in the Periodic Table than this constituent; and (c) has an ionic radius within \sB 7% of that of the constituent.  The basic compositions fall into three categories:  (a) lead titanate-zirconates; (b) lead titanate-stannates; and (c) lead titanate-zirconate-stannates, a preferred binary composition being Pb(Ti.47Zr.53)O3. Binary and ternary stannate compositions preferably have a mol. ratio PbTiO3: PbSnO3 in the range 40: 60 to 50: 50. Three examples of substituents are: 2 atom per cent scandium; 2 atom per cent indium; and 1 atom per cent potassium, all applied to the lead titanate-zirconate composition given above, the starting materials being, respectively, scandium oxide, indium oxide and potassium carbonate.  The compositions are fired twice, first at 870 DEG  C. then at 1350 DEG  C.  One or more of the alkaline earth metals strontium, calcium or barium may be present as substituents for up to 30 atom per cent of the lead.
Patent GB-979570-A (GB)
Title: Improvements in or relating to the reduction of carbon monoxide in hydrogen-containing gases
IPC: C01B3/58
Filed: 1963-01-16
Abstract: Small quantities of carbon monoxide in a hydrogen-containing gas are reduced to methane by passage over a fixed Raney nickel type catalyst maintained by indirect steam heating at 180-230 DEG  C. The catalyst, in the form of balls, rolls or pills, may be pure nickel or compositions obtained by dissolving, e.g. with 1% NaOH, only part, e.g. 3-30% of the metal other than nickel from alloys of nickel with, say, 20-80% of aluminium, zinc or magnesium. The gas, under a pressure of 5-50 atmospheres, is passed at 5 to 20 m.3 per litre of catalyst per hour through a reactor having a steam jacket.  The gas may be preheated in a steam heat exchanger.  Gas containing 0.1-0.8% CO has this content reduced to below 5 p.p.m.