baber/WOPTO huggingface dataset:
Patent GB-877020-A (GB)
Title: Improvements relating to arrangements for dissipating heat generated in semi-conductor devices
Inventor: LAMONT KEITH
IPC: H01L23/40
Filed: 1959-06-15
Abstract: 877,020. Transistors. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. June 2, 1960 [June 15, 1959], No. 20426/59. Class 37. A transistor in a metal casing which is connected to an electrode is mounted on a chassis with a relatively thick ceramic washer, which may be silver-plated, lying between and in good thermal contact with the casing and the chassis. The Figure shows the transistor casing 1 with collector connecting tag 9, emitter and base leads 7 and 8 and the ceramic washer which is between # and 2 inches thick, lying between the casing and chassis 3. The washer may contain cooling vents and the chassis surface ground to ensure good contact.
Patent GB-1071094-A (GB)
Title: Serial to diplex conversion system
IPC: H04L27/227
Filed: 1964-05-15
Abstract: 1,071,094. Data transmission. ROBERTSHAW CONTROLS CO. May 15, 1964 [May 24, 1963], No. 20442/64. Heading H4P. Serial binary data is transmitted in a manner analogous to twinplex, pairs of consecutive bits being represented by a phase shift which is characteristic of that pair. The invention relates to the means for arranging the bits in pairs and for driving a marking on one of four outputs dependent upon the bit pair. In the arrangement of Fig. 1 (not shown), serial data at bit rate from a source (1<SP>1</SP>) passes direct and via an inverter (2<SP>1</SP>) to four AND gates (9<SP>1</SP>-12<SP>1</SP>) which are also fed by clock pulses at half bit rate. A bi-stable circuit (13<SP>1</SP>) connected to the gates stores the first bit of a pair and one of a second series of four AND gates (15<SP>1</SP>-18<SP>1</SP>) generates an output, corresponding to a bit pair 10, 11, 01, or 00. Transmission and reception takes place by a system generally similar to that described in Patent No. 1,012,131. The outputs from the circuit described above feed an arrangement of gates which produces a marking in one of five leads which enable gates fed by five frequencies 2#/5 apart in phase and of twice the bit frequency. The resultant phase shift signal represents each bit pair by a corresponding forward phase shift; there are therefore five possible phases. At the receiver the signals are demodulated by gating with a clock train derived from the received signals to develop markings on one of five outputs. An arrangement of gates converts these to a marking on one of four leads, corresponding to the four bit pairs, and a further gating arrangement converts these to the original serial data at bit rate.
Patent GB-239993-A (GB)
Title: Improvements in the production of smokeless fuel and byproducts from coal
IPC: C10B57/08
Filed: 1924-08-29
Abstract: 239,993. Dewar, W. Aug. 29, 1924. Coking processes.-Coal is subjected to a preliminary heat treatment at a temperature about 300‹ C., and for 100 to 120 minutes, to drive off the constituents which cause fusion to take place in the ordinary distillation. The charge is then heated to between 400‹ and 600‹ C. The retorts mav be heated either externally or internally or by both methods, and the heating medium may be gaseous or liquid or may be molten metal. The by-products from both stages are recovered and the solid product may be used as blending material for carbonization when non-coding coal is not available, or may serve, after crushing, as a pulverized fuel.
Patent GB-1071571-A (GB)
Title: Electronic switching
IPC: H01L29/78
Filed: 1964-05-19
Abstract: 1,071,571. Semi-conductor devices. RADIO CORPORATION OF AMERICA. May 19, 1964 [May 28, 1963], No. 20655/64. Heading H1K. [Also in Divisions H3 and H4] A switching circuit {see Division H3) utilizes a planar insulated-gate field-effect transistor. As shown, the body 12 may be of polycrystaliine or very lightly doped P-type silicon of 100 ohm cm. and is coated with heavily-doped N-type silicon dioxide. Part of the silicon dioxide is removed by a photo-resist and etching technique, where the gate electrode G is to be formed and around the outer edges. The body 12 is then heated in water vapour so as to grow silicon dioxide layers on the exposed silicon areas and to diffuse impurities from the silicon dioxide layer to form source and drain regions S, D. The deposited silicon dioxide is then removed over part of the source and drain regions and electrodes 16, 22, 24 are deposited by successive evaporation of chromium and gold to form the source, gate and drain electrodes. The gate electrode 22 is insulated from the body by a layer of silicon dioxide which overlies an inversion channel C of controllable conductivity connecting the source and drain regions. The device may alternatively be formed on an N-type substrate. The device exhibits linear bi-directional drain current/voltage characteristics (Fig. 3, not shown) and may be arranged so that the drain current may be cut off by a zero gate voltage or, if the device is baked in oxygen, a finite voltage will be necessary to cut off the drain current.
Patent GB-1148717-A (GB)
Title: Phenylbenz (f)-2,5-oxazocine derivatives and homologues and pharmaceutical compositions
IPC: C07D267/22
Filed: 1966-05-10
Abstract: 1,148,717. Phenylbenz-(f)-2,5-oxazocine derivatives. REXALL DRUG & CHEMICAL CO. 10 May, 1966 [10 May, 1965], No. 20698/66. Heading C2C. Novel compounds of the formula where R is H or C 1-6  alkyl, and (CH 2 ) n  represents a C 2-4  alkylene chain, and optionally the alkylene chain may bear one or more C 1-6  alkyl groups, and the benzenoid portion of the fused ring structure and/or the phenyl radical may bear one or more C 1-6  alkyl, C 1-6  alkoxy, halogen or CF 3  substituents, are obtained (A) by cyclization of a 2-(hydroxyalkylamino)-methylbenzhydrol (II, below) by refluxing with p-toluenesulphonic acid in the presence of a solvent, or (B) by treatment of a 5-C 1-6  alkyl-1 phenyl benz-(f)-2,5-oxazocine-4-one with an alkali metal alumino-hydride reducing agent (e.g. LiAlH 4 ) at reflux temperatures in the presence of an inert organic solvent. The products may be converted to their non-toxic pharmaceutically acceptable acid addition or quaternary ammonium salts. 2 - (Hydroxyalkylamino) - methylbenzhydrols of the formual (where R is H or C 1-6  alkyl, and either phenyl ring may bear C 1-6  alkyl, C 1-6  alkoxy or halogen substituents) are obtained: (1) by low pressure hydrogenation of a corresponding N-(2-hydroxyalkyl) - N - R - substituted - 3 - phenyl - 1 - phthalanamine in the presence of a catalyst, such as Pd on carbon or Pt or Raney Ni, and an inert solvent, such as methanol or ethanol; (2) when R is C 1-6  alkyl, by treatment of a N-(2- hydroxyalkyl) - N - C 1-6  - alkyl - o - benzoylbenzamide with a metal hydride reducing agent, such as LiAlH 4 , in an inert solvent at 25‹ to 60‹ C. A method of treating vertibrates other than man comprises administering a pharmaceutically acceptable compound of Formula I, or an acid addition salt or quaternary ammonium salt thereof, as a diuretic agent, skeletal muscle relaxant or central nervous system stimulant.
Patent GB-1496732-A (GB)
Title: Short-circuit current limiter
IPC: H01H71/50
Filed: 1975-05-15
Abstract: 1496732 Electrodynamic switches HAZEMEYER SA 15 May 1975 [21 May 1974] 20713/75 Heading H1N In a current limiter comprising a fixed 3 and a movable contact 4 shaped so that when an electric current greater than a threshold value flows through them an electrodynamic repulsion force is generated between them to pivot the movable contact about an axis to separate it from the fixed contact, a spring 5 urging the contacts together connects the movable contact with a pivoted element 9 which moves under the interaction between an armature 25 fixed in the element 9 and an electromagnet 27 in series with the fixed contact circuit, the arrangement being such that the armature is operated by the electromagnet at currents at the threshold value to pivot the element 9 and displace the spring 5 so that the force of the spring on the movable contact reduces and then reverses direction. After the current is cut off the armature 25 is released and under the action of the spring 5, the pivoted element 9 returns to its original position and the contacts remake. Reclosure of the contacts may be delayed by means of a dashpot or suction membrane and the current limiter may be combined with a circuit breaker, Fig. 5, not shown. Rebound of the movable contact is damped by special configuration of the pivot support of the element 9.
Patent GB-587323-A (GB)
Title: Improvements in or relating to fittings for electric wiring
IPC: H02G3/20
Filed: 1944-10-25
Abstract: 587,323. Ceiling roses. ROSEN, N. Oct. 25, 1944, No. 20724. [Class 38, (i)] A ceiling or wall fitting comprises a box A, B, wherein the flexible leads G pass through a cap E screwed to a tubular member D which is screwed to a central boss C, projecting inwardly from the back plate A. The leads G are clamped in a two-part member F, pass into the box through openings D<1> in the member D, and are connected to a main cable G<2>, the separate conductors ef which are clamped at H. The box may be secured in an unfinished ceiling by screwing it at C<2> to a perforated strip K passing through apertures B<3>, C<1> and fixed to joists before putting up lath M and plaster M<1>. A casing J is secured to lugs B<2>, or alternativey, Fig. 2 (not shown) the casing J may be supported externally by the cap E, an intermediate tube being threadedly engaged by the member D and cap E at opposite ends.
Patent GB-1428252-A (GB)
Title: Heat sinks combined with electron tubes
IPC: H01J29/00
Filed: 1973-05-02
Abstract: 1428252 Discharge tubes WESTINGHOUSE ELECTRIC CO 2 May 1973 [16 May 1972] 20907/73 Heading H1D A support and heat sink for a discharge tube 4, e.g. a vidicon camera tube, is formed by a cylindrical assembly 6 which is close to but spaced from the tube 4, which supports the deflection coils 10 and alignment coil 12, and which is itself supported, concentric with the tube 4, by a support collar 26, around the lip 27 of which the assembly may be rotated for adjustment, and within which is received a socket 16 of a socket assembly 14. The latter assembly includes a tube bias board 18 having adjustment potentiometers for setting the electrode voltages, while the high power voltage supply is contained within the housing 20. Plates 36 and 38 co-operate with cover plates 44, 46, 48 and 50, 52, 54 respectively, to define compartments 62 for housing electronic multichip packages, while the side plates 58 and 60 are printed circuit boards via which all connections to the packages are effected.
Patent GB-320157-A (GB)
Title: Improvements in vertical boilers
IPC: F22B13/02
Filed: 1928-07-20
Abstract: 320,157. Spencer, A. L. Hitchcock-. July 20, 1928. Vertical boilers.- In a boiler having cross water tubes d in the firebox arranged in nests spaced apart vertically, access is obtained to each pair of nests through manholes e, f, arranged diagonally in pairs, on opposite sides of the boiler shell. The shell around the manholes is strengthened by plates j. Specification 290,020 is referred to.
Patent GB-499454-A (GB)
Title: Improvements relating to television transmission arrangement with scanning of the picture by means of an lkonoscope or the like
IPC: H04N5/067
Filed: 1938-07-18
Abstract: 499,454. Television. RADIOAKT.- GES. D. S. LOEWE. July 18, 1938, No. 21233. Convention date, July 19, 1937. [Class 40 (iii)] Defects occur in a received picture owing to a delay of synchronizing impulses relatively to image signals from an iconoscope transmitter. These are eliminated by passing the synchronizing signals from generators 2x, 2y through the transmitter 4, 5, 6 and a special receiver 7 ... 10 to generators 3x, 3y of relaxation oscillations for the iconoscope 1. The delay of the synchronizing impulses in the special receiver is the same as that in the distant receiver. If the iconoscope scans the picture at a distance from the transmitter, the synchronizing signals are transmitted to the relaxation oscillators by a wireless or wiredwireless link, Fig. 3 (not shown).
Patent GB-643730-A (GB)
Title: Production of hydroxy benzene resins and product thereof
IPC: C08G8/24
Filed: 1947-08-06
Abstract: Resinous adhesive masses are obtained by reacting at reflux temperatures a molten mixture of a methylol monohydric phenol and a polyhydric phenol having its hydroxyl groups on the same aromatic nucleous.  The methylol phenol may be used in proportions sufficient to give a one-stage resin or a two-stage resin hardenable by addition of a setting agent.  There are specified: polyhydric phenols: resorcinol, catechol, hydroquinone, pyrogallol, phloroglucinol; methylol monohydric phenols: phenol, cresol, cresylic acid, or xylenols substituted by one or more methylol groups.  As setting agents for the two-stage resins are specified: hexa, oxymethylenes, paraform, paraldehydes, methylol compounds, e.g. dimethylol paracresol, methylol ureas or thioureas or methylol-melamines, with or without hexa, acetaldehyde, paraldehyde, propionaldehyde, butyl aldehydes, or furfuraldehydes.  Catalysts for the reaction may be oxalic, hydrochloric, sulphuric, phosphoric, boric, citric, salicylic or acetic acids, or borax, sodium hydroxide, azoxy-toluidine, aniline, or ethanolamines.  Alcohols and aliphatic and aromatic ketones are specified as solvents.  The products may be used to bond laminates in forming aeroplanes, furniture, boats, and laminations of wood, metal, or alternate layers of wood and cloth or asbestos may be used.  A polymethylol phenol for use as a setting agent is prepared by reacting phenol and formaldehyde at 20-25 DEG  C. with a sodium hydroxide catalyst.  The Specification as open to inspection under Sect. 91 describes the reaction of mono- and poly-hydric-phenols with other methylol compounds, e.g. resorcinol and dimethylol urea, nitromethane, or trimethylol amino methane; phenol and dimethylol urea.  A fusible resin is obtained by reacting resorcinol at 100 DEG C. with part of the formaldehyde and adding the remainder while keeping the mixture boiling.  Trimethylol methane is specified as hardener. This subject-matter does not appear in the Specification as accepted.
Patent GB-1379654-A (GB)
Title: Treating molten metals
IPC: C22B9/10
Filed: 1972-05-08
Abstract: 1379654 Treatment of molten metals FOSECO INTERNATIONAL Ltd 30 April 1973 [8 May 1972] 21408/72 Heading C7D A composition comprising a body of alkali metal (e.g. sodium, potassium or lithium), alkaline earth metal (e.g. calcium or barium) or magnesium or alloy of any of these, surrounded by an inner coating of a non-water containing water-vapour impermeable material and at least substantially surrounded by an outer coating of refractory material is used in the treatment of molten metal. The inner coating may consist of aluminium, steel, copper, P.T.F.E. or silicone resin and the outer coating may be of non-uniform thickness and may consist of phosphate bonded calcined magnesite, alumina or dolomite. The composition may be prepared by casting the molten treatment metal into an elongate cylinder of inner coating material which is subsequently coated with refractory material and may be added to molten copper, light alloys, steel or nickel to remove hydrogen and sulphur therefrom.
Patent GB-1032722-A (GB)
Title: Improvements relating to relays having sealed magnetic contact units
IPC: H01H51/28
Filed: 1963-05-29
Abstract: 1,032,722. Electromagnetic relays. HITACHI SEISAKUSHO KABUSHIKI KAISHA, and HEIKIN HITACHI ENGINEERING KABUSHIKI KAISHA. May 29, 1963 [June 4, 1962; June 5, 1962 (2)], No. 21549/63. Heading H2B. A sealed magnetic contact unit is filled with a mixture of hydrogen and nitrogen. The overlapping ends of the nickel-iron reeds may be plated with a layer of copper between 1 and 8 microns thick and then subjected to a diffusion treatment for fifty minutes in a stream of hydrogen gas at 900 C. In an alternative gold and copper were plated on the ends of the reeds and caused to diffuse by heating them in a stream of hydrogen at 900 C.
Patent GB-784552-A (GB)
Title: Improvements in or relating to apparatus for the liquid immersion and conveyance of sheets
IPC: G03D3/10
Filed: 1955-07-26
Abstract: 784,552. Photographic processing apparatus. KODAK, Ltd. July 26, 1955 [July 27, 1954], No. 21564/55. Class 98(2) [Also in Group XXX] Photographic material in the form of sheets in holders 16 having arms which rest on the sides of a tank or series of tanks 11, is fed step-wise through the tanks by means of lift rails 12 which are attached at both ends to endless chains 13 so as to be raised and lowered and moved forward at the top of their travel and backwards again at the bottom, the rails having sliding bars 58 attached to them and engaging means to slide them forwards on the rails at the top of their upward travel and backwards at the bottom, the rails and/or bars being provided with projections such as removable pins 41, 67 so that the arms of the holders may be lifted at any given point either by the rails or the bars as required, so at to move them greater or lesser amounts through the baths and thus vary the time of immersion in the baths. The tanks are surrounded by a water jacket 18 and the liquids in the tanks are agitated by blowing air periodically from holes in pipes in the bottoms of the tanks. The rails 12 have rollers 35 which engage channels 39 and they are so attached to the four chains 13 that while each lift rail remains horizontal, one rail is in advance of the other to tip the holders 16 in one direction as they are raised and in the opposite direction as they are lowered. The lift chains 13 are driven from a common motor 52 by a means of a gear box 50 and chains 26, 56. Removable brackets 66 carrying lift pins 67 may be fitted to the bars 58 (with removal of the corresponding pins 41 from the lift bar 12) at any places where it is desired to increase the distances traversed by the holders per lift. The bars 58 are slid backwards and forwards on the lift bars by means of rollers 63 which engage cams 64 at the top of each lift and cams 65 at the bottom of each downward movement. A feed rack 15 is provided along which the holders 16 are progressively fed by the lift rails, that holder which is in the notch on the extreme right being fed into the first tank 11 at each lift. A holder 16, after having passed through the tanks 11, is lifted on to the unloading rack 17 which comprises sloping arms 70. A catch is provided on that arm 70 which engages the leading side of the tilted. holder 16 and prevents it sliding down the arm 70 until the other end of the holder engages a switch on the other arm 70, whereupon the catch is released and the holder 16 slides down the arms. It is preferred to use the longer lift provided by pins 67 to load and unload the holders into thetanks and to lift them over any dividing partitions in the tanks.
Patent GB-715391-A (GB)
Title: Improvements relating to helicopters having jet-driven rotors
IPC: F02K7/00
Filed: 1951-09-13
Abstract: 715,391. Gas turbine plant; jet propulsion plant. FAIREY AVIATION CO., Ltd.. and FORSYTH, A: G. Nov. 14, 1952 [Sept. 13, 1951], No. 21566/51. Class 110(3) [Also in Groups XII and XXXIII] A jet-driven helicopter rotor has blades provided with two independent controllable sets of jet propulsion units. The helicopter carries a rotor column each side of which is mounted a gas turbocompressor unit supplying compressed air to forward propulsion units and certain of the jet units at the tips of the rotor blades. In the embodiment of Fig. 2 jet propulsion units are mounted sideby-side at the end of each blade and comprise a ram-jet unit 18 and a pressure jet unit 17 fed with air from the turbo-compressors. The unit 18 comprises an outer shroud 19 surrounding a combustion chamber 22 provided with a fuel nozzle 24 surrounded by a number of air inlets 26 whilst several rings of holes are formed in the wall of the chamber 22. An igniter plug 28 is provided. The unit 17 has a combustion chamber 29 mounted within a surrounding shroud 30, closed at its forward end and supplied with compressed air through a duct 31. A fuel. nozzle 32, air inlets 34 and 37 and an igniter plug 35 are provided. In a further embodiment, Fig. 3, (not shown) the pressure jet unit is mounted concentrically within the ram-jet unit and the constructions of the'units are the same as those previously described except that the ramjet unit has an annular fuel nozzle. In a still further embodiment, Fig. 4, (not shown) two pressure jet units are used, one mounted within the other. Other diagrammatic arrangements, Figs. 5-8, (not shown) show a ram-jet unit mounted outboard of a pressure jet unit and a plurality of ram-jet units grouped around a single pressure jet unit. Reference has been directed by the Comptroller to Specification 634,332.
Patent GB-1498435-A (GB)
Title: Developing device for use in electrophotography
IPC: G03G15/09
Filed: 1975-05-20
Abstract: 1498435 Developing electrostatic images KONISHIROKU PHOTO INDUSTRY CO Ltd and HITACHI METALS Ltd 20 May 1975 [21 May 1974] 21579/75 Heading G2H The outer sleeves of magnetic brush rollers A, B rotate in opposite directions, so that developer is passed from supply roller B developing roller A to develope electrostatic latent images on drum 1 opposite pole NA1. Carrier particles which stick to the developed image are removed by pole SB1 of roller B and returned to a sump in the foot of housing 9. Auxiliary magnet 11 on toner hopper 7 attracts carrier particles from the magnetic brush on roller A, so that they sweep dispensing roller 10 and assist mixing-in of new toner.
Patent GB-517174-A (GB)
Title: Improvements in or relating to the manufacture of chlorine and alkali metal nitrates
IPC: C01B7/03
Filed: 1938-07-20
Abstract: 517,174. Chlorine; alkali nitrates. IMPERIAL CHEMICAL INDUSTRIES, Ltd. July 20, 1938, Nos. 21606 and 28578. Convention dates, July 21, 1937 and Oct. 30, 1937. Drawings to Specification. [Classes 1 (iii) and 90] A cyclic process for making alkali metal nitrate and chlorine comprises reacting nitric acid with an alkali chloride, removing nitrogen peroxide from the gaseous decomposition products by treating them with alkali chloride to be reacted subsequently with nitric acid, isolating chlorine from these gases, decomposing the residual notrosyl chloride to produce nitric oxide which is then converted to nitric acid and together with fresh acid, is used for the conversion of, further quantities of alkali chloride. According to one method described, the nitrosyl chloride from the distillation columns in which chlorine is removed is treated with water, forming aquaregia and evolving nitric oxide which is oxidised to the peroxide and hydrated to nitric acid ; the mixture of nitric and hydrochloric acids is fed back to the first stage to react with sodium chloride, and part of the alkali nitrate formed is also fed back to decompose the hydrochloric acid returned. Preferably, however, the nitrosyl chloride is treated with alkali metal nitrate at temperatures preferably above 300‹C., e.g., in a rotating furnace. All the nitrogen is evolved as peroxide and is converted to nitric, acid and used for treatment of more alkali chloride ; also the amount of water to be evaporated in the process is reduced by about 50 per cent. In the first stage of the process, the nitric acid is treated with excess of alkali chloride, to give a liquor saturated with chloride. This is cooled and the alkali metal nitrate crystallises and is separated. The mother liquor is neutralised with sodium carbonate, evaporated to crystallise alkali chloride (which is returned to the cycle) and the mother liquor cooled to give more alkali nitrate. The final liquor being added to the liquor to be evaporated. Detailed examples and flow sheets are given.