baber/WOPTO huggingface dataset:
Patent GB-605785-A (GB)
Title: Improvements in or relating to regulating means for thermal gas turbine motive unitsused for driving electric direct current generators
Filed: 1945-05-18
Abstract: 605,785. Fluid-pressure servomotor-control systems. SOC. RATEAU. May 18, 1945, No. 12586. Convention date, July 10, 1941. [Class 135] [Also in Groups XXVI and XXXV] A gas turbine plant of the kind in which an auxiliary turbine or turbines drives a compressor or compressors supplying the combustion chamber or chambers, and including a power turbine or turbines mounted on an independent shaft or shafts driving one or more direct current generators, is controlled so that whatever the load on the generator the speed of the power turbine is brought back to that corresponding to the optimum efficiency for the load by adjusting either the excitation of the generator or, in the case when the excitation of the generator is automatically adjusted, the motive torque of the power turbine. In a gas turbine plant, Fig. 1, comprising a turbine Ta driving a compressor C supplying air to a combustion chamber Ch, the gases from which pass to the turbine Ta and the power turbine Tm driving a generator G1 on a separate shaft, the speed of the turbine Tm is controlled by varying the excitation of the generator G1. A speed responsive member R1 which may be a pump, controls the pressure above a spring- loaded piston p1 which is connected through a lever m4, cam m1, levers t, t1 and t2 to a servomotor S which operates a lever arm r3 of a rheostat R3 controlling the excitation of the generator G1. 'A governor R2 which is responsive to any factor which is a function of the load on the machine, in the case shown, the pressure at the inlet to the turbines also controls the movement of the lever arm r3 through the levers t, t1, t2 and servomotor S. The position of the pivot a on the lever t and the shape of the cam m1 are so chosen relative to one another that the power turbine operates at its point of maximum efficiency for the load. In a modification, the control mechanism can operate on the fuel supply to the combustion chamber Ch as well as the excitation of the generator G1. In a still further modification, the excitation of the generator is automatically controlled by a constant voltage regulator, the governors R1 and R2 are used to control the fuel supply to the combustion chamber Ch only. The governor R2 may be responsive to any factor which is a function of the load, e.g. the pressure or temperature ahead of either of the turbines, the quantity of air discharged by the compressor, the quantity of fuel supplied or the differential pressure between points situated before or after the turbines Tm, Ta. Specification 513,816, [Group XXVI], is referred to.
Patent GB-954720-A (GB)
Title: Improvements in or relating to reactor fuels
Inventor: RUSSELL LEWIS ERIC
IPC: C01B31/30
Filed: 1962-04-02
Abstract: 954,720. Fuel material. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. March 27,1963 [April 2, 1962], No. 12641/62. Heading G6C. A process for producing a uranium carbideplutonium carbide fuel material comprises taking a powder of uranium and plutonium carbides of 2 to 4 microns, containing 48 to 53 atomic per cent carbon, and less than 1% oxygen by weight, compacting the powder to form pellets, and sinteringthe pellets in an inert atmosphere. The proportion of plutonium is preferably 15 atomic per cent of the uranium, and sintering is carried out at approximately 1550‹C. in an inert atmosphere, such as argon, containing less than 10 p.p.m. oxygen. The resultant structure comprises a coherent matrix of uranium carbide, possibly containing a small proportion of plutonium carbide in solid solution, and a disperse phase of plutonium sesquicarbide. The carbide powders originate from arc melted material and may be separately powdered, or they may be in the form of a solid solution of the two carbides prior to powdering.
Patent GB-474759-A (GB)
Title: Improvements in electric gaseous discharge devices
IPC: H01J13/02
Filed: 1936-05-05
Abstract: 474,759. Discharge apparatus. TENNANT, W. J. (Soc. Anon. pour les Applications de l'ElectricitÚ et des Gaz Rares Etablissements Claude-Paz & Silva) May 5, 1936, No. 12711. [Class 39 (i)] An arc relay device has a filling of xenon or krypton or a mixture of these gases at 0À01 to 0À5 mm. pressure, and an alkaline metal cathode free from mercury. The cathode is preferably of the regeneratable type described in Specification 379,271. The filling has properties closely approaching that of mercury, without the disadvantages of mercury cathodes. The form shown has a potassium cathode 7, and one or more anode arms 2 each containing an anode 4 and grid 3. An ignition rod 5 of resistance material extends through the cathode barrier 9 towards the cathode. A discharge starts between the cathode and the tip of the rod 5, but owing to the voltage drop in the rod is transferred to the metal cap 10 at the other end which acts as an excitation anode. Cooling fins 8 surround the cathode. The filling is a mixture of krypton and xenon at 0À1 mm. pressure. Grains of refractory silicon carbide may be added to the cathode material to facilitate the formation of a cathode spot. In a modification, the grids are provided with resistant rods extending towards the cathode, to reduce the striking voltage.
Patent GB-694026-A (GB)
Title: Electric signal translating apparatus utilizing semiconductive elements
IPC: H03K5/24
Filed: 1949-05-13
Abstract: 694,026. Semi-conductor amplifiers. WESTERN ELECTRIC CO., Inc. May 13, 1949 [May 19, 1948], No. 12815/49. Class 40 (iv). [Also in Group XL (c)] Electric signal translating apparatus for use in a modulating or gating circuit comprises a semi-conductive member with a control electrode making low resistance contact with the member, an absorber electrode making rectifier contact with the member and baised for reverse direction conduction, two or more emitter electrodes biased for forward direction conduction, and means for applying signals to each of the emitter electrodes, In Fig. 1, a block 1 of N-type germanium having a thin layer 2 of P-type material is prepared, for example, as described in Specifications 632,942, [Group XL (c)], and 694,022, [Group XXXVI]. A high resistance barrier 3 separates the N- and P-type layers. The control electrode 6, emitter electrode 4 and absorber or collector electrode 5 are provided and supplied with appropriate bias voltages, as described in Specification 694,021, to provide a semi-conductor amplifying device. The bias for the emitter electrode may be provided by resistor 10 and condenser 11, as described in Specification 694,025. A second emitter electrode 4a is also provided, and signals such as a "carrier" and a modulating signal from sources " p " and " q " are applied to electrodes 4 and 4a respectively. The current in the circuit from the absorber electrode 5 is controlled only by the most positive emitter electrode, the more negative electrode having no effect, so that with two oscillations, as shown in Fig. 3, the absorber electrode current corresponds to that shown by the solid line. This output waveform contains the usual sum and difference frequencies, which may be selected by filters. The emitter electrodes are preferably spaced at equal distances and on opposite sides of the adsorber electrode. Alternatively, a rectangular waveform may be applied to electrode 4a, so that the arrangement then provides a gating circuit. An additional auxiliary emitter electrode may also be added, whereby, for example, a gating circuit dependent upon the combined effect of two gating control voltages may be provided. Similar circuits but corresponding to the " grounded grid " and " cathode follower circuits used with thermionic valves are also described. If a block of P-type material with an N-type layer is used, the sense of the bias and applied voltages is reversed.
Patent GB-474769-A (GB)
Title: Improvements in or relating to radio aerials
IPC: H01Q9/34
Filed: 1936-05-06
Abstract: 474,769. Aerials. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and MOULLIN, E. B. May 6, 1936, No. 12828. [Class 40 (v)] To minimize highangle radiation, the distribution of the current in a half-wave aerial is given the form shown in Figs. 1 and 3, as distinct from that shown in Fig. 2. In other words the current " loop " is raised above its normal distance from ground. To secure this result, a halfwave aerial 1, Fig. 4, is arranged substantially coincident with a quarter-wave aerial 3, which is insulated at 5, accurately tuned at 7, 8, and fed in anti-phase with the aerial 1. Or a half-wave tower aerial is surrounded by a cage of quarter-wave aerials suspended from an insulated ring, halfway down the height of the tower. Each of the cage aerials is accurately tuned and fed in phase-opposition with the main aerial. Both these arrangements produce the current-distribution shown in Fig. 1. That shown in Fig. 3 may be obtained by connecting the auxiliary wire 3 or cage-system to a " folded roof," Fig. 6 (not shown). The arrangement results in a saving of 25 per cent in power, and in effect converts a half-wave into a five-eighths aerial.
Patent GB-130772-A (GB)
Title: An Artificial Foot and Lower Leg.
Inventor: RODGERS ALEXANDER
IPC: A61F2/60
Filed: 1918-08-08
Abstract: 130,772. Rodgers, A. Aug. 8, 1918. Limbs, artificial.-In the type of foot made in portions resiliently hinged together, the instep portion C is hinged by a knuckle-joint to a fixed heel portion B which is riveted to a hollow metallic leg portion S. This is covered by a leather envelope T, and may have metal straps L by which it can bo jointed to thigh straps 0 in known manner, a spring K giving resilience to the knee-joint. The thigh-piece encloses a block J which is grooved for the spring K. Instead of metal straps, leather straps may be used to connect the leg and thigh portions.
Patent GB-987673-A (GB)
Title: Improvements relating to plansifters
Inventor: WOLFENDEN PHILIP HUNTER
IPC: B07B1/38
Filed: 1961-04-11
Abstract: 987,673. Plansifters. HENRY SIMON Ltd. March 2, 1962 [April 11, 1961], No. 12964/61. Heading B2H. A plansifter of the free swinging type, comprising sieve units a and a supporting framework, is suspended on slinging elements n, which carry the free swinging unit, and is caused to gyrate in a horizontal orbit by rotation of a central vertical pendulum shaft f, coupled at its upper end by a universal coupling element g, to a vertical drive shaft j, Fig. 2, carried in journal bearings on an overhead supporting framework m, from which the free swinging unit is slung, the lower end of the pendulum shaft f having a parallel off-set extension f<SP>1</SP>, rotatably supported at the geometric centre of the free swinging unit by a spherical bearing b, the off-set extension f<SP>i</SP> being furnished with balance weights c, d which provide for the dynamic counter balancing of the free swinging unit when it is in horizontal orbit, the weights c, d being so arranged above and below the geometric centre of the free swinging unit that the pendulum shaft f does not exert a horizontal force on the coupling element g as it is rotated, an eccentrically disposed auxiliary balance weight i, Fig. 2, being mounted on the drive shaft j to transmit, through the journal bearings to the framework m, a horizontal force equal and in anti-phase to the horizontal force transmitted to the framework m by the slinging elements n carrying the free swinging unit. The auxiliary balance weight i may be integral with the rim of a drive pulley h for the shaft j, Fig. 2. In an alternative embodiment, Fig. 5 (not shown), the drive shaft j is driven by bevel gearing and the balance weight i is mounted on the inside of an annular rim keyed to the shaft j. Sheet metal plates o, Fig. 1, may be attached to the upper or lower surfaces of the sieve units a to ensure that the centre of gravity of the free swinging unit is in the horizontal plane e-e containing the spherical bearing b. The elements n may be canes, spring rods, or wire ropes.
Patent GB-1146043-A (GB)
Title: Improvements in or relating to magnetic focussing system
IPC: H01J23/087
Filed: 1966-03-24
Abstract: 1,146,043. Discharge tubes. SIEMENS A.G. 24 March, 1966 [25 March, 1965], No. 12967/66. Heading H1D. In a magnetic system for focusing an electron beam along the axis of a transit-time tube, transverse magnetic field components are suppressed by a screening tube mounted within the magnetic system and about the axis, composed of magnetically soft plates and interposed non-magnetic spacers, and having a longitudinal slot (3, Figs. 1 and 5, not shown) extending at least from one end along most of its length, the transverse width (b) of the slot being less than the height (h) of its side faces formed by the wall of the tube; this maintains the screening action while permitting ready interchange of the discharge tube housed within the screening tube, if a hinged magnetic system is employed, the transversely extending input and output connections to the tube projecting through the slot. The outer diameter of the screening tube may be increased in the neighbourhood of the slot to satisfy the above condition on the slot dimensions. A travelling wave tube, supported by flanges located at the free ends of the input and output coaxial lines, is centred within the screening tube by two rings formed on the surface of its metal envelope, the screening tube being itself supported at one end by a member releasably supported by one of the flanges (Figs. 6 and 7, not shown).
Patent GB-474409-A (GB)
Title: Improvements in or relating to medicinal capsules or coated pills
IPC: A61J3/07
Filed: 1936-05-08
Abstract: 474,409. Medicinal capsules; pill coatings. SHARP & DOHME, Inc. May 8, 1936, Nos. 13043 and 13044. Convention dates, May 8, 1935 and May 10, 1935. [Class 81 (i)] [Also in Group V] Medicinal capsules or coated pills, having a pre-formed centre or filling sealed in a continuous layer of coating material formed in two parts with integrally united edges, are formed by subjecting a sheet of elastic gelatine or the like to the action of a vacuum to form recesses or depressions therein, placing the pre-formed centres in said recesses, applying a second sheet of gelatine, subjecting the second sheet to vacuum to form recesses therein and applying pressure to cut them and cause the edges of the cut portions to adhere together. In certain cases, as hexyl resorcinol pills, the centres may be coated with an inert material such as starch before being enclosed in the gelatine coatings or capsules. Compressed tablets of drugs, or two-part hard gelatine capsules may be used as the pre-formed centres. The apparatus used comprises a lower mould member 1 placed on a gasket 2 over a vacuum chamber 3 and having openings 8 surrounded by raised cutting edge portions 9, a raised edge 7 and a groove 12 to receive a nozzle 13 connected to the vacuum producing means ; and an upper mould member 25 enclosed in a frame 23 is formed with corresponding openings 26 and cutting edges 27. In operation a sheet of gelatin is placed on the lower mould member and vacuum is applied to form depressions 18, the pill centres are then placed in the depressions, a second sheet of gelatin is applied, the space between the two sheets is evacuated by means of the nozzle 13 so as to draw the second sheet into close contact with the pill centres, the upper mould member is then applied, the vacuum released, and the two mould members carrying the pills enclosed by the gelatin sheets are removed to a hydraulic press which forces them together so as to cut and seal the edges of the gelatin round the pills. The sheets used may be of gelatin and glycerin or of gum acacia, gum tragacanth or shellac.
Patent GB-825759-A (GB)
Title: Apparatus for translating binary code multidigit signals into corresponding potential values
IPC: H03M1/00
Filed: 1956-04-27
Abstract: 825,759. Electric selective signalling systems. BENDIX AVIATION CORPORATION. April 27, 1956 [May 19, 1955], No. 13052/56. Class 40 (1). Apparatus for translating binary code multidigit electric signals into corresponding potential values between first and second main terminals comprises a plurality of potential sources corresponding to the different digits of said signal, each source having twice the potential of the next lower source, a digital switch for each source operable by its corresponding digit signal into first and second conditions and circuit means including said switches connecting all said sources in series with each other between the first and second main terminals, characterized in that the switches so control the polar relations of the connections of said sources in said series circuit that the algebraic sum of said source potentials between said main terminals corresponds to the binary number represented by the binary code signals, all the sources remaining series connected between said main terminals at all times. As described a pattern representative of an angular position, is set-up on a group of relays and as a result potentials are applied to three terminals which potentials are the same as those which would be produced by a synchro with its rotor in the angular position represented by the registered pattern. The basic component used is a tapped transformer (referred to as a digital transformer) which is arranged either as in Fig. 1. to decode a pure binary pattern (the dotted connection being those that are made when a relay is energized) or, as in Fig. 2, to decode a reflected binary pattern. Each transformer also has a biasing secondary winding W15 by the use of which potentials can be obtained across terminals D and B which are 15 volts less than those produced across terminals A and B. Two of these transformers, with suitably scaled secondary windings, are arranged as shown at G1 and G2, Fig. 6, to produce the desired potentials at terminals S 1 , S 2  and S 3 . An actual embodiment, Fig. 7, comprises two transformers G1 and G2 having secondary windings tapped and weighted as shown and six relays D1-D6. The first two relays D1 and D2 produce increments of 7¢ degrees and therefore cover a range of 30 degrees, and the last four relays D4-D6 arrange the transformers between the terminals S 1 -S 3  in 12 different ways, thereby covering 360 degrees (this is so because the output potentials of a 3-pole synchro repeat, with different polarities and on different terminals every 30 degrees). Reference has been directed by the Comptroller to Specifications 731,650 and 783,654.
Patent GB-857789-A (GB)
Title: Improvements in pulsating fluid-pressure dampening or surge absorbing apparatus
IPC: F16L55/052
Filed: 1957-04-24
Abstract: 857,789. Metal pipes. WESTINGHOUSE AIR BRAKE CO. April 24, 1957 [April 24, 1956; July 27, 1956], No. 13124/57. Class 99(2). [Also in Group XXIX] A fluid pulsation damping device which is inserted in a fluid-conveying pipe, 21, 22, Fig. 1, consists of a tube 7 with a series of radial ports arranged in axial rows 8-12, the tube being encased by a sleeve 23 of rubber or other elastic material which in turn is surrounded by a coiled-coil tension spring 30 so that fluid acts through the radial ports and at excess pressures distends the sleeve 23 and spring 30 thereby enlarging the volume between the sleeve and tube. When the excess pressure pulse ceases the sleeve and spring force the surplus fluid back into the tube 7. One end of the tube may be closed and the other end connected to the fluid pipe by a T-joint. The shape of the coiled cross-section of the spring may be circular, rectangular or square whilst two telescopically arranged tubes enclose the spring to prevent the ingression of dust and moisture. In a modification, the tube 110, Fig. 5, has imperforate end parts 116, 117 and the elastic sleeve which extends over such parts is encased in a shield comprising two radially and axially overlapping semi-cylindrical members 119, 120 of spring metal. A clamp 130, 135 is provided around each end of the sleeve-shield assembly, the clamp bolts also serving as anchors for the ends of the externally disposed helically wound coil spring 140.
Patent GB-619486-A (GB)
Title: Improvements in or relating to load handling apparatus
IPC: B66F9/065
Filed: 1944-07-10
Abstract: 619,486. Load-handling apparatus. BROSIUS, E. E. July 10, 1944, No. 13143. Convention date, July 8, 1943. [Class 78 (iii)] [Also in Group XII] A load-handling device such as a platform is mounted on a support by means of a parallel motion linkage, said linkage being adapted to be operated so as to raise and lower the device as a whole and in addition to be orientated as a whole about an axis on the support so as to tilt the device. In the embodiment shown, a load-supporting member 16 is supported on a truck by a bracket 12 which is pivoted at 13, 14 on pairs of links 8, 11, the links 8 being fixed to a shaft 7 on the truck on which is pivotally mounted members 9 to which the links 11 are connected by a shaft 10. Vertical movement of the member 16 is effected by a piston operating in a fluidpressure cylinder 23, its piston rod 22 being connected to a lever 20 fixed on the shaft 7. Tilting is effected by a piston operating in a cylinder 26, its piston rod 25 being connected to the shaft 10, whereby the members 9 may be moved clockwise. The cylinder pistons are controlled from the operator's seat 4 through a control panel 28, separate valves being provided for each cylinder. Electric motors for driving the truck and operating a fluid-pressure pump are connected to a remote electrical supply through a cable 5 connected to the mast 6.
Patent GB-814541-A (GB)
Title: Improvements in or relating to photographic shutters
IPC: G03B9/70
Filed: 1956-04-30
Abstract: 814,541. Photographic cameras. DECKEL, H., and DECKEL, F. W. April 30, 1956 [May 11, 1955], No. 13157/56. Class 98(1) In a photographic shutter, a movable control member for flash synchronisation and a delayed action self-timer is locked against movement by a safety catch which engages it. Preferably, the safety catch is a pivoted lever and may be a two-armed lever 32 engaging notches 40 in control member 28 or, alternatively, it may be a single armed lever engaging inwardly open notches. When a self-timer having its own driving spring is cocked by moving member 28 from the position X of instantaneous flash to the position V of delayed action release, no notch 40 is provided in the V position and the member may be returned to the X position by a spring as soon as the self-timer is cocked or as soon as the shutter is released. When the self-timer is cocked by setting the shutter, a third notch 40 is provided (Fig. 4, not shown).
Patent GB-1375149-A (GB)
IPC: C11D7/60
Filed: 1973-03-19
Abstract: 1375149 Glass cleaning compositions HITACHI Ltd 19 March 1973 [21 March 1972] 13163/73 Heading C5D A glass cleaning composition, for removing photoresist film and/or carbon film adhered to a glass surface, comprises hydrofluoric acid and tannic acid. Aqueous solutions containing 0À01 to 10% by wt. of hydrofluoric acid and 0À01 to 5% by wt. of tannic acid are used for cleaning glass, e.g. a colour television picture tube.
Patent GB-804104-A (GB)
Title: Improvements in or relating to easels
IPC: A47B97/08
Filed: 1956-04-30
Abstract: 804,104. Tables. FAIRHEAD, E. P. Feb. 26, 1957 [April 30, 1956], No. 13166/56. Class 52(3) An easel is made readily collapsible by connecting the individual parts together e.g. by bolts as shown. Spring clips or dowels may be used.
Patent GB-423980-A (GB)
Title: Process for producing seamless tubes
IPC: B21B19/14
Filed: 1934-05-01
Abstract: 423,980. Rolling tubes. VEREINIGTE STAHLWERKE AKT.-GES., 67, Breitestrasse, D³sseldorf, Germany. May 1, 1934, No. 13182. Convention date, Nov. 27, 1933. [Class 83 (iv)] In reducing a hollow billet A by a series of coacting internal and external rolls on a helical track the rolls B <1> form a shallow groove which is gradually widened and deepened by the succeeding pairs of rolls B<4> &c. More than one set of rolls may be used, Fig. 14, working in a separate helical track or may be set to follow up in the same helical track. The rolls are skewed to feed the work.