baber/WOPTO huggingface dataset:
Patent GB-1455244-A (GB)
Title: Methods and apparatus for analysing microscopically a dark area containing a few widely spaced small bright features
IPC: G01N15/14
Filed: 1972-11-21
Abstract: 1455244 Image analysis IMAGE ANALYSING COMPUTERS Ltd 16 Nov 1973 [21 Nov 1972] 53743/72 Heading G1A In image analysis in which an area is viewed by a television camera via a microscope system, a number n of different fields making up the area to be examined are presented sequentially to be stored superimposed on the camera target, before a read scan is performed, followed by a succession of erase scans. A single scan system is detailed in Fig. 1 and utilizes flash illumination of a specimen (the "area" to be analyzed). The circuit for controlling the sequence of scanning events is detailed in Fig. 5 and comprises two counters, one counting the number of field scans and the other the number of erase scans. If these are set e.g. 5 and 2 respectively, a sequence of five successive fields of the specimen will be stored, the lamp 20, Fig. 1 being flashed once to illuminate each field as the stage is moved to present a different part of the specimen. During this process scanning is inhibited. The read scan is then carried out, followed by two erase scans. The stage is started again and the sequence repeated. Two methods of movement of the stage are suggested: the stage may be stepped, or if frame scan time and erase interval will allow, continuously moved. If the latter is not possible a double scanner (camera) together with an optical diverting device is used. The n fields are stored on the first scanner target and while this is read and erased, the beam is diverted to the second scanner and a further n fields stored. In this case extra erase scans may be carried out while storing is taking place by the other scanner. The images of the specimen are represented as bright features on a black or dark grey background and since each field contains few features, which are widely spaced, the probability of superimposition of features during an accumulation of five fields, is very low.  If the time available for erasure is insufficient in a system using a plurality of scanners, extra scanners may be provided, so that extra erase scans may be provided.
Patent GB-541912-A (GB)
Abstract: 541,912. Dyestuff intermediates ; dyeing textiles. COMPAGNIE NATIONALE DE MATIERES COLORANTES ET MANUFACTURES DE PRODUITS CHIMIQUES DU NORD REUNIES ETABLISSEMENTS KUHLMANN. June 11, 1940, No. 10136. Convention date, June 12, 1939. [Classes 2 (iii) and 15 (ii)] N-Hydroxyalkylamino derivatives of 2-amino- 5-sulphobenzoic acid are obtained by condensing a salt of the acid with a primary hydroxyalkylamine in presence of an acid absorbing agent and, if necessary, of a condensing catalyst such as copper powder. The products re-act in neutral or alkaline media with diazotized aromatic amines to form diazoamino compounds suitable for use in the production of insoluble azo dyes on the fibre, especially in printing, by applying them in admixture with coupling components and subjecting the fibres to treatment to break up the diazoamino compound and effect the coupling. Specified hydroxyalkylamines are #-hydroxyethylamine and γ-hydroxypropylamine. Example (1) relates to the production of 2-#-hydroxyethylamino-5-sulphobenzoic acid by condensing 2- chloro-5-sulphobenzoic acid with #-hydroxyethylamine in an aqueous solution containing sodium carbonate by boiling under reflux in presence of copper powder. Examples (2), (3) and (4) relate to the production of diazoamino compounds from diazotized 5-nitro-2-aminotoluene, 2:5-dichloraniline and 2-aminoanisol-4- sulphodiethylamide respectively and 2-#- hydroxyethylamino-5-sulphobenzoic acid. The Specification as open to inspection under Sec. 91 comprises also the production and use of the corresponding diazoamino compounds from the 2-cycloalkylamino-5-sulphobenzoic acids. This is the subject-matter of Specification 576,619 and does not appear in the- Specification as accepted.
Patent GB-1496130-A (GB)
Title: Power circuits for obtaining a high power factor electronically
IPC: H02M1/00
Filed: 1974-12-17
Abstract: 1496130 Supply arrangements for discharge lamps and other loads; converting GENERAL ELECTRIC CO 17 Dec 1974 [2 Jan 1974] 54378/74 Headings H2F and H2H In a supply circuit for a load, e.g. a discharge lamp, the A.C. supply mains 20, 21 is coupled, with or without rectification at 22, via a high frequency filter 23, 24 to a chopper 25 having a coasting device 26 and coasting inductor 29 so as to maintain current in the load 30 during the OFF period of the chopper 25. The instantaneous current is monitored at 31 and compared at 35 with a control function derived from the A.C. mains 20, 22 in such a way as to improve the power factor of the circuit to greater than 90%. The comparator 35 is arranged to change state many times in each half cycle of the A.C. mains 20, 21 so that the chopper 25 operates at a high frequency (e.g. 10 kHz) at the beginning and end of each half cycle of the supply mains 20, 21, increasing to a higher frequency (e.g. 30 kHz) towards the peak of each half cycle. Fig. 14 (not shown) depicts the circuit of blocks 34 and 35. It is stated that the control function may be a full wave rectified sine wave in phase with the A.C. mains 20, 21 a sine squared signal, or a constant D.C. reference. An automatic gain control circuit may be included to compensate for variations in the supply voltage. In Fig. 8 (not shown) the two left-hand diodes 22 are replaced by gate turn-off thyristors which respectively fulfil the function of components 25, 26. In Fig. 9 (not shown) the rectifier 22 is omitted, transistor 25 is replaced by a pair of gate-turn-off thyristors in anti-parallel whilst the coasting diode 26 is replaced by a pair of anti-parallel thyristors. This arrangement feeds an A.C. load. Alternatively the pair of gateturn-off thyristors may be replaced by a single such thyristor across a diode bridge.
Patent GB-1286810-A (GB)
Title: Lamps for road vehicles
Inventor: GREEN STANLEY
IPC: B60Q1/24
Filed: 1968-11-18
Abstract: 1286810 Vehicle lamps JOSEPH LUCAS (INDUSTRIES) Ltd 3 Nov 1969 [18 Nov 1968] 54547/68 Heading F4R A vehicle lamp comprises a lamp body 11 containing a bulb holder 14 and a lens 16 having a portion 17 which is masked by the body from direct rays of light emitted by a bulb supported by the holder, the lens carrying a reflector 18 which reflects light on to the portion 17. The reflector 18 may consist of an aluminium coating on the lens or a reflective foil secured to the lens and is preferably of cylindrical or planar form. The holder 14 incorporates a reflector 15.
Patent GB-1177486-A (GB)
Title: Production of Spherical Metal Particles.
IPC: B22F9/08
Filed: 1966-12-06
Abstract: 1,177,486. Vibrating conveyer. REYNOLDS METAL CO. 6 Dec., 1966, No. 54615/66. Heading B8A. [Also in Division C7] Granulated metal, produced by atomization of a melt fed through nozzle 24 and solidification in chamber 20, is discharged from chamber 20 by vibrating conveyer 27 into annular trough 35, then is lifted by vertical helical vibratory conveyer 32 to trough 38 through oxidizing chamber 31. Alternatively, the granulated metal may be fed downwards through a gravity spiral conveyer. In either case the spiral of the conveyer is interrupted by a series of steps, over which the granulated metal cascades, so as to be exposed to gas from pipe 40. Both conveyer 27 and conveyer 32 may be electromagnetically actuated.
Patent GB-1278537-A (GB)
Title: Improvements in or relating to mobile cranes with detachable counterweights
Inventor: WETZEL ARNO
IPC: B66C23/74
Filed: 1970-11-20
Abstract: 1278537 Mobile jib cranes SCHWERMASCHINENBAU GEORGI DIMITROFF VEB 20 Nov 1970 55329/70 Heading B8B A mobile jib crane comprises a telescopic jib 1 pivoted at 6 on a slewing upper chassis 7 mounted on a main chassis 9. In the transporting position shown a hoisting winch 2 is located, on a bracket 5, beyond the rear end 4 of the vehicle, at the same height as the pivot point 6 of the jib, and is used to raise a counterweight 8 in the form of a trailer to an attachmeat 10.
Patent GB-1446179-A (GB)
Title: Electrolytic preparation of glyoxylic acid
IPC: C25B3/25
Filed: 1973-11-30
Abstract: 1446179 Preparing glyoxylic acid electrolytically RHONE-POULENC SA 30 Nov 1973 [1 Dec 1972] 55719/73 Addition to 1364939 Heading C7B [Also in Division C2] Glyoxylic acid is prepared by reduction of oxalic acid in a diaphragm cell in which a catholyte comprises an aqueous solution of oxalic acid and 0.00005 to 1% of an adjurant chosen from: (a) tertiary amines having less than 40 C atoms, (b) ditertiary diamines having between 6 and 40 C atoms. (c) quaternary ammonium salts either of Formula NR 4 <SP>+</SP>. <SP>1</SP>/ y  A<SP>y-</SP> or NR 4 <SP>+-</SP>R<SP>-</SP>NR 3 . <SP>2</SP>/ y A<SP>y-</SP>having between 15 and 40 or between 8 and 40 C atoms respectively all containing (aryl) aliphatic radicals (y being 1, 2 or 3, and A being hydroxy or anion of inorganic or organic acid.) Many examples are specified, e.g. tribenzylamine, (dimethylamino) -ethyl ether dimethyl or diethyl-benzyl-dodecyl- (or tetradecyl, hexadecyl, octadecyl, eicosyl, docosyl) ammonium hydroxides and salts. The cathode may be of Cd, Pb, Hg or amalgam or alloy thereof e.g. with Ag, Sb or Sn; the anode may be of Pt, platinized Ti, graphite, Pb or its alloy e.g. with Ag, Sb or Sn. The diaphragm is preferably a cation exchange membrane reinforced with a screen. The anolyte may be an aqueous solution of sulphuric or phosphoric acid. Woven fabric or grid spacers may be located between the electrodes and diaphragm in a filter press type cell. Catholyte and anolyte may be circulated, oxalic acid being added and catholyte withdrawn continuously.  Reference has been directed by the Comptroller Specification 1364761
Patent GB-1108700-A (GB)
Title: Ship having a hold equipped with movable between deck sections
IPC: B63B25/18
Filed: 1966-12-16
Abstract: 1,108,700. Removable decks. H. K. KLOESS. 16 Dec., 1966, No. 56401/66. Heading B7S. Between deck sections or wing decks 12c, 12d, which can be moved alternately from a stowage position not directly beneath hatchway 2 of the hold of a ship to loading and unloading positions beneath the hatchway, respectively have an extension 22c, 22d hinged along the side of the movable deck section adjacent the hatchway and, as shown in the lower between deck, the extensions close the between deck space when the movable deck sections are in their stowage positions in the wings of the hold. For the longitudinal hatchway shown, the width of the movable deck sections is substantially equal to the length of the shorter side of the hatchway. An embodiment also described comprises transverse hatchways each having a width substantially equal to the width of a movable deck section in which case the length of the hold is substantially five times the width of the movable deck sections.
Patent GB-1348759-A (GB)
Title: Valve assembly
IPC: F16K41/10
Filed: 1972-12-08
Abstract: 1348759 Valves ATOMIC ENERGY OF CANADA Ltd 8 Dec 1972 [16 Dec 1971] 56698/72 Headings F2V and F2B A valve assembly comprises a valve stem 12 carrying a valve member 2, the stem having a collar 24 to which are fixed adjacent ends of a pair of bellows 16, 18, their remote ends being fixed to movable plates 49, 51 respectively which also carry the ends of a pair of outer bellows 26, 28 respectively whose adjacent ends are fixed to the valve casing. When the valve is in the open position, fluid entering the valve can flow into a chamber 50 via port 58. It can pass both to the inside and outside of the bellows arrangement. Between the inner and outer bellows is charged a buffer fluid via port 36. Similarly in the isolated chamber 48 above, buffer fluid is charged around the inside and outside of the bellows arrangement via port 52. Should one of the bellows 16, 18, 26, 28 rupture only a slow seepage of fluid occurs because the pressure differences across the bellows are small. Any fluid passing the sealing ring 15 is leaked off via passage 80.
Patent GB-1151416-A (GB)
Title: Process and apparatus for Making Carbon Black Pellets
Inventor: RUBLE THEODORE ALLEN
IPC: C09C1/58
Filed: 1966-12-19
Abstract: 1,151,416. Pelletization of carbon black. CONTINENTAL CARBON CO. 19 Dec., 1966, No. 56770/66. Heading C1A. Pelletized carbon black is produced by taking a hot gaseous effluent from a reactor, with a water quench connected thereto and passing it through the heating side of a heat exchanger, through a cooling tower to a collection system, wherein particulate carbon black is separated from the gaseous effluent. The particulate carbon black from the collection system is passed into a mixing box, wherein it is wet pelletized, and the pellets are then passed to a pellet dryer. The clean effluent gases from the collection system are passed to a condenser to recover the water therefrom and then a portion is passed through the heat exchanger, wherein its temperature is substantially raised and it is then passed to the pellet dryer. The gaseous effluent from the pellet dryer may be passed to the condenser wherein the water is recovered and the gases may be recirculated via the heat exchanger. The water recovered from the condenser may be used in the cooling tower, the reactor quench or the mixing box.
Patent GB-1378394-A (GB)
Title: Disposable resistance welding cap electrodes
IPC: B23K11/30
Filed: 1971-12-07
Abstract: 1378394 Welding by pressure P R MALLORY & CO Inc 7 Dec 1971 [18 Dec 1970] 56832/71 Heading B3R A composite disposable resistance welding cap electrode comprises a holder member shaped to fit on to or into an adaptor and made of 5005, 6061 or 6063 (Aluminium Association), alloy, zinc, zinc base alloy, iron or iron base alloy and having an insert tip inserted in a bore in the holder, the tip being made of an electrically and thermally conductive material having a greater strength at operating temperatures than the holder member. In an embodiment, cooling fluid, e.g. water, alcohol, air or nitrogen is passed through a hollow member 30, Fig. 1, into the channel formed between the member 30 and the bore 11 of the holder 10, an enlarged portion 14 of the holder forming a heat sink for the insert tip 20. The tip may or may not contain a coolant channel 21 in the insert portion 24 thereof which portion may be a square, rectangular, elliptical, multi-sided or circular cross-section and may be pressure fitted in the bore, brazed or fitted by tapering, knurls or splines. The working part of the tip may be part-spherical or may be flat and offset from the axis of the tip. Electrode adaptors 350, Fig. 3, which carry cap electrodes 310 according to the invention are carried in adaptors on arms 301, 302 of a welding machine, the adaptors being connected to cooling systems. The insert tip and holder may be machined from rod, die-east, extruded or sintered and the insert may be of copper, copper alloyed with one or more of chromium, zirconium, beryllium and cadmium, tungsten or molybdenum or alloys thereof, tungsten or molybdenum infiltrated with copper or silver, or alloys of silver, gold or platinum.
Patent GB-1419127-A (GB)
Title: Thermoset polyester resin particles
IPC: C08F2/18
Filed: 1972-12-12
Abstract: 1419127 Thermoset polyester resin particles KOPPERS CO Inc 12 Dec 1972 [5 Jan 1972] 57356/72 Heading C3P A multiplicity of particles of clear, thermoset polyester resin formed by cross-linking of an unsaturated polyester with an ethylenically unsaturated cross-linking agent, which particles are shaped in the form of substantially perfect spheres may be prepared by (a) forming an aqueous dispersion of polymerizable liquid particles of an ethylenically unsaturated polyester and an ethylenically unsaturated monomeric cross-linking agent polymerizable therewith, the unsaturated polyester being the product of reaction between a polycarboxylic acid and a polyol at least one of which is ethylenically unsaturated; a polyvinyl alcohol suspending agent for maintaining the liquid particles dispersed in the aqueous phase of the dispersion; and sodium chloride in an amount sufficient to improve the clarity of the cured particles produced; and (b) curing the liquid particles while in their dispersed state into discrete solid cured polyester resin particles by crosslinking the polyester with the cross-linking agent. By "clear" is meant substantially free of a milky or cloudy appearance and substantially free of white or coloured regions. In the examples unsaturated polyesters prepared from propylene glycol, dipropylene glycol, isophthalic acid, maleic anhydride, phthalic anhydride, propxylated bisphenol A, propxylated tetrabromobisphenol A and fumaric acid are crosslinked with styrene and methyl methacrylate in aqueous dispersion in the presence of sodium chloride, polyvinyl alcohol, t-butyl peroctoate, lauroyl peroxide, 4-dodecyloxy - 2 - hydroxybenzophenone and 2-(2-hydroxy-5-methylphenyl)benzotriazole. The cured particles are separated, washed and dried. The particles of Example 35 are waterproofed with a mixture of dimethyl dichlorosilane and trimethyl chlorosilane. The particles may be used in reflex light reflectors.
Patent GB-1379806-A (GB)
Title: Preparation of thioformamide
IPC: C07C325/00
Filed: 1972-12-13
Abstract: 1379806 Thioformamide MERCK & CO Inc 13 Dec 1972 [20 Dec 1081] 57484/72 Heading C2C Thioformamide is made by reacting hydrogen cyanide and hydrogen sulphide in an organic solvent in the presence of a basic ion-exchange resin as a catalyst. The reaction may be performed continuously by passing the reagents over a column of the resin.
Patent GB-1283540-A (GB)
Title: Improved device for detecting wheel lock
IPC: B60T8/58
Filed: 1969-11-25
Abstract: 1283540 Antiskid systems ROBERT BOSCH GmbH 25 Nov 1969 [26 Nov 1968] 57557/69 Heading F2F In a device for detecting locking of vehicle wheel and producing a signal to release the vehicle brakes a pulse train is generated whose frequency is proportional to the angular velocity of the wheel by a pulse generator 10 and is converted by shaper 13 into shaped pulses having a specific time behaviour, and the instantaneous values of two shaped pulses at a predetermined time after the start of a subsequent pulse are compared and the brake releasing pulse generated when the difference between the instantaneous values exceeds a predetermined upper limit. In the embodiment shown the shaped pulses are fed to a differentiating circuit 14 and to a changeover switch 15 which feeds the pulses alternately to memory circuits 17, 18, so that when the difference between the values of the pulses in the circuits exceeds a predetermined value an analyser 22 produces a signal for releasing the brakes. In a modification of the device only one memory is used. The memories may comprise closed loop memory circuits having an integrating amplifier in their forward branch. Instead of comparing consecutive pulses, every other pulse can be compared.
Patent GB-1280447-A (GB)
Title: Positive displacement pump
IPC: F04C2/344
Filed: 1970-12-04
Abstract: 1280447 Rotary positive-displacement pumps FORD MOTOR CO Ltd 4 Dec 1970 [24 Dec 1969] 57675/70 Heading F1F In a double-acting rotary positive displacement pump of the radially outwardly-sliding "slipper" type for a vehicle power-assisted steering system, the pressure fluid output flow to the power steering motor, or servo, (not shown) is by way of a fluid control valve orifice 76 and a pressure control bypass valve 38 carrying a tapered needle valve 90 which on fluid-pressure increase progressively restricts the flow such that the greater the amount of restriction the higher the rate of pressure build-up on the valve 88 side of the orifice 76 to move the valve 88 against a spring 86 restricting the flow from the outlet chamber 70 through the orifice 76 to the net output flow to a passage 78, connected to the pump outlet conduit, at a value determined by the calibration of the needle valve 90, the outlet pressure in passage 78 being determined by the spring 86 because of the action of a second orifice 80 whereby if this pressure exceeds a predetermined value a balancing pressure via the orifice 80 and a cross-over duct 82 unseats a spring-loaded ball valve 92 to by-pass pressure fluid to a chamber 94, surrounding the valve 88, the chamber 94 communicating with a nozzle 96 whereby the by-pass flow is accelerated through an internal feed passage 98 communicating with a reservoir 100 whereby fluid is drawn from the reservoir by the aspirator action developed by the accelerated fluid in the feed passage 98 which supercharges the fluid in an annular inlet port chamber 64, the supercharging action additionally serving to prevent pump cavitation. The rotor 36 of the pump is fast on an engine driven shaft 20 and carries a number of spring-loaded slippers 48 arranged in pockets 50 of the rotor and engaging an elliptic cam track of a fixed cam plate which forms two arcuate working spaces 44, 46 defining the pumping chamber between end-plates 16, 26, diametrically oppositely arranged inlet and outlet ports 60, 62 and 54, 56 being formed in the adjacent pump casing 10 semi-isolated from the pump rotor 36.
Patent GB-1360763-A (GB)
Title: Process for the production of transchrysanthemic acid
IPC: C07C51/00
Filed: 1972-12-14
Abstract: 1360763 Chrysanthemic acid SUMITOMO CHEMICAL CO Ltd 14 Dec 1972 [18 Dec 1971] 57823/72 Heading C2C Trans-chrysanthemic acid is prepared by reacting cis-chrysanthemic acid or a metal salt thereof with either an alkali metal alcoholate or a mixture of an alkali metal or alkali metal hydroxide and a C 1-4  alkanol or a glycol at 150-260‹ C.
Patent GB-1148099-A (GB)
Title: Stabilization of knit cellulosic textile materials
IPC: D06C29/00
Filed: 1966-12-28
Abstract: 1,148,099. Treating cellulosic materials. J. P. STEVENS & CO. Inc. 28 Dec., 1966 [23 March, 1966], No. 57928/66. Heading D1P. Cellulosic textile materials, e.g. cotton, linen or viscose rayon fibres alone or in admixture with wool, nylon, polyester, acrylic or polyolefin fibres, are treated with a polyfunctional reagent and an acidic catalyst which are applied to the materials in the form of aqueous solutions either separately or together and the excess solution removed, prior to or after making them into a knitted fabric or garment and the fabric or garment is then tumbled and simultaneously heated to a temperature and for a time sufficient to effect curing to render them shrink resistant and wrinkle resistant. The polyfunctional reagent is a dimethylol or polymethylol compound in which the methylol groups are bonded to nitrogen and may be a urea-formaldehyde or melamine-formaldehyde resin precondensate or a methylol derivative of ethyleneurea, a triazone, a carbamate or an imidazolidone, and the acidic catalyst may be citric, lactic, tartaric or glycodic acid alone or in admixture with magnesium chloride or nitrate, zinc chloride or nitrate or calcium chloride. Knitted fabrics or garments may be impregnated with the polyfunctional reagent and catalyst from the same or different aqueous solutions by padding, spraying or dipping, excess solution removed by squeezing or centrifuging, and the fabric or garment then heated by tumbling in a dryer at 150‹-250‹F for 20 minutes to 3 hours, the heat tumbling optionally being interrupted to press the material before all the moisture has been removed from it. Alternatively the fabric or garment may be dried at a temperature lower than the curing temperature and then tumble cured. Yarn may be treated with the polyfunctional reagent and acidic catalyst, dried at a temperature below the curing temperature, knitted into a fabric and then tumble cured with or without a pressing step. The treated material may subsequently be washed to remove unreacted reagent or catalyst and may be treated with softeners, e.g. a polyethylene emulsion or fluorescent whiteners together with the treating agent or in a separate step. Knitted cotton socks, shirts and cardigans may be treated.