baber/WOPTO huggingface dataset:
Patent GB-782157-A (GB)
Title: Improvements in or relating to discharge devices of the velocity modulated type
IPC: H01J25/24
Filed: 1954-03-29
Abstract: 782,157. Velocity-modulated tubes. TELEFUNKEN GES. March 29, 1954 [March 28, 1953], No. 9040/54. Class 39(1). A velocity modulation device, preferably a reflex klystron has within the envelope a rectangular waveguide across which a ribbon beam is projected, the waveguide having a capacitive gap extendnig parallel to the broad dimension of the guide and formed by slots extending in the latter direction and in the broad dimension of the beam cross-section, further guide sections being provided outside the envelope so as to form with the inside portions a cavity resonator, the parts of the resonator on opposite sides of the gap being so weakly coupled together by the gap that the resonator oscillates only in the fundamental H 10  waveguide mode over a wide tuning range. The external sections of the resonator may be provided with tuning plungers which are mechanically coupled together so as to make equal movements. The external sections may have the same transverse dimensions as the internal sections or may be of larger dimensions. The decoupling is such that mode changing during tuning is avoided. Fig. 6 shows one tuning plunger 22 having a coupling slot 21 of dumb-bell shape (the other end may be similarly terminated) to permit extraction of energy which may for example be fed into a hollow pipe guide. Alternatively, energy is taken from only one of the resonator end sections, the other end section being used as a frequency stabilising circuit, Fig. 7, (not shown). Indirectly heated strip cathode 6 generates a beam of sheet form which is collected after reflection by diaphragm 16 which has a smaller aperture than diaphragm 15. The windows 8 are sealed to metal envelope 9, threaded rings 12 facilitating the attachment of the external resonator sections are soldered to the envelope, and may form sub-assemblies with windows 8. Chokes 18 equivalent to a double lead long and shorted at one end prevent escape of energy. In assembly the resonator parts 3, 4, members 18, reflector 5 and gun 6, 7 are formed into a unitary structure and mounted on the base 10, after which the assembly is inserted in envelope 9. To ensure good dissipation of heat members 18 are soldered to envelope 9 or held in position by envelope depressions 19. 7 is a focusing electrode and the aperture of diaphragm 16 can be covered by a grid, Fig. 3 (not shown). The non-uniformity of the electric field in the resonator which causes non-uniform modulation and penetration of the beam into the reflector space, can be compensated by shaping the reflector 5, e.g. it may be shaped so that all electrons have the same transit time in the resonator-reflector space. Movement of the tuning plungers towards members 15, 16, is limited at the high frequencies end by a harmonic of the fundamental H 10  mode and at the lower frequency end by the occurrence of several oscillatory states. The apertures across which windows 8 are sealed are designed so that their resonant frequency is far removed from the operating frequency.
Patent GB-688241-A (GB)
Title: Improvements in automatic telephone systems
IPC: H04M15/08
Filed: 1951-04-18
Abstract: 688,241. Automatic exchange systems. GENERAL ELECTRIC CO., Ltd., and ROUSSEAU, J. E. Feb. 19, 1952 [April 18, 1951], No. 9048/51. Class 40 (iv). A single D.C. pulse sent back over the line wires of a junction in simplex from an operator's position or call recording apparatus to a subscriber's exchange or an intermediate exchange initiates the operation of subscriber-identification apparatus. As shown, a call set up by a subscriber at an exchange, Fig. 1, through an intermediate exchange, Fig. 2, to an operator's exchange, Fig. 3, is answered by an operator inserting a plug P in a jack J..To identify the caller's number, the operator momentarily closes a switch K to energize a relay S over the ring connection. A D.C. pulse is thereby applied to the primary winding of a transformer T1 and induced in its two secondary windings of which one is connected in each line wire of the junction, the windings being arranged to present substantially no inductance to loop currents. The pulse is repeated at the intermediate exchange by means of transformer T2, relay V and transformer T3 and is received at the subscriber's exchange on transformer T4 so that relay W is momentarily energized to bring up relay MA, thereby initiating an identification cycle which may be similar to that described in Specification 687,098.
Patent GB-1170241-A (GB)
Title: Electric Storage Batteries.
Inventor: HARRIS JOHN DEREK
IPC: H01M50/627
Filed: 1966-03-02
Abstract: 1,170,241. Topping-up accumulators. JOSEPH LUCAS (INDUSTRIES) Ltd. 20 Feb., 1967 [2 March, 1966], No. 9108/66. Heading H1B. A storage battery is provided with a lid, a filling recess in the lid communicating with filling tubes which extend into the cells of the battery, orifices in the lid communicating with the cells through which the spaces below the lid can be vented, a cover which when in a closed position closes the filling recess and in a filling position opens the recess and closes the orifices by means of members which extend through them and close them when the cover is moved to this position, so that on filling the rise of electrolyte level in each cell ceases when the bottom of each filling tube is reached and on returning of the cover to the closed position the cells are vented and any eloctrloyte in the filling tubes flows into them. An exploded view of an  embodiment of the invention is shown in Fig. 1 Battery plates 14 in cells 13 are interconnected through partitions 12 by connectors which are not shown. Lid 15 which fits over the battery case includes filling recess 17, filling tubes 18 and vent orifices 19, which have resilient walls. In the closed position cover 21 rests on top of the lid and is retained by catches 27 acting on ridges 27. The filling tubes are closed by stoppers 24 and the vents are open. In the filling position the cover is raised until the vents are closed by balls 23, catches 24 engage ridges 25 and the filling tubes are open. The cover may then be pivoted to facilitate filling (Fig. 2, not shown). In this position distilled water is added up to the tops of the filling tubes.
Patent GB-1471914-A (GB)
Title: Alkali metal-sulphur cells
IPC: H01M4/66
Filed: 1975-03-10
Abstract: 1471914 Alkali metal-sulphur cells BRITISH RAILWAYS BOARD 10 March 1975 [28 Feb 1974] 9132/74 Heading H1B An alkali metal-sulphur cell comprises a liquid alkali metal anode, a liquid sulphur cathode 4, a solid electrolyte 1 and current collectors 2, 3 in contact with the alkali metal and sulphur, at least that part of the collector 2 contacting the sulphur material consisting of an electronically conducting ceramic body having a resistivity of 10 ohm-cm. or less at 350‹ C. The electrolyte 1 is in the form of a tube of #-alumina provided with a flange 8 of α-alumina. The current collector 2 consists of a ceramic tube made of the oxides, borides, nitrides, carbides, sulphides or silicides of certain elements, suitable materials being VO 2 , CrO 2 , ReO 2 , MoO 2 , Ti 2 O 3 , SiC, SnO 2  doped with Nb 2 O 5 , TiO 2  doped with Nb 2 O 5 , Sb 2 O 5 ; Fe 3 O 4 , SrMnO 3  doped with CaMnO 3 ; Fe 2 O 3  doped with TiO 2 . The tube 2 may be coated with a layer 5 of copper or aluminium and the top of the cell is closed by a compression seal assembly 7. In a modification the current collector 2 is surrounded by the sulphur cathode and is in the form of a ceramic tube containing aluminium or steel wool and a central metal rod. A stack of cells connected in series to form a battery is also described.
Patent GB-1283190-A (GB)
Title: Liquid developers for developing electrostatic latent images
IPC: G03G9/08
Filed: 1969-06-05
Abstract: 1283190 Polymer compositions RICOH KK 5 June 1969 [5 June 1968] 9139/72 Heading C3R [Also in Division G2] Electrostatographic liquid developer comprises a dispersion in (1) an electrically insulating paraffinic, isoparaffinic, naphtha or halogenated hydrocarbon of (2) toner particles comprising pigment particles coated with (a) at least one resin selected from phenol-aldehyde resins, phenol modified xylene resins, copoly(styrene/ hydroxyethyl methacrylate) and copoly(styrene/butylmethacrylate) and (b) at least one copolymer of lauryl methacrylate with diaminoethyl, n-butyl or iso-butyl methacrylate. In the examples, the pigment is carbon black and (a) is a phenol modified xylene resin.
Patent GB-166316-A (GB)
Title: An improved apparatus for washing photographic prints, plates, films and the like
IPC: G03D3/02
Filed: 1920-03-30
Abstract: 166,316. Colwell, G. March 30, 1920. Washing and like tanks.-In apparatus for washing prints, films, &c. which is periodically emptied and filled by siphon apparatus, the prints or films are suspended by clips 19 from rods 20 which are movable along internal ledges 18 of one compartment 6 of the tank. The other compartment 7 contains a siphon arrangement for intermittently emptying the compartment 6. The inverted floating bell 14 rises as water flows through openings 9, 15 until, on reaching a predetermined level, the air compressed within the bell and the outlet tube 11 causes the bell to rise so that the water passes over the tube 11 and the siphoning commences. The tank is completely emptied and subsequently refilled by the tap 3.
Patent GB-499925-A (GB)
Title: Process of and apparatus for the production of barium sulphide from barytes
IPC: C01B17/44
Filed: 1938-03-25
Abstract: In the production of barium sulphide by heating barytes and a reducing agent in a rotary tube furnace, the heating is effected below the sintering temperature in the upper and middle <PICT:0499925/III/1> zones of the furnace by flames at several points distributed over the length of the furnace.  The charge may be cooled in the lower zone of the furnace by means of inert or reducing gases. Producer, blast furnace, or remote supply gas, tar, oil or coal dust may be employed for heating the charge, and the above gases or nitrogen, carbon dioxide or cooled combustion gases containing little free oxygen, for cooling it.  As shown, a mixture of barytes and, say, 15-20 per cent of pulverized lignite, bituminous coal or semi-coke is charged through pipe 1 into a rotary furnace 2 consisting of a refractory-lined iron shell provided with baffle rings 5 and turning devices 6.  The heating gas flows through a distributer head 8, a pipe 9, or several pipes, attached to the furnace, and branch pipes 11 to valve-controlled burners 13, which are also supplied with air from the distributer head via pipe(s) 10 and branch pipes 12.  Gas is also supplied to the lowest zone of the furnace through inlets 20, and serves to cool the product to below 400 DEG  C., say, to 150-200 DEG  C., the product being discharged through devices 7.  The middle zone of the furnace, between the track rings 16, is maintained at about 980 DEG  C.  The air supplied is preferably 10-25 per cent in excess of that required to burn the heating gas supplied to the burners 13 and also from the lowest zone of the furnace.  A portion of the gaseous or liquid heating medium, say, one tenth to one third, may be replaced by coal, the quantity thereof in the charge being increased to, say, 25 per cent.  The furnace gases discharged through furnace head 15 contain only a few grams sulphur dioxide per cubic metre.
Patent GB-512964-A (GB)
Title: Improvements in encasements for treating fractures and the like
IPC: A61L15/07
Filed: 1938-03-25
Abstract: 512,964. Stiffening bandages. BECKWITH MANUFACTURING CO. March 25, 1938, No. 9242. Convention date, April 9, 1937. Drawings to Specification. [Class 81 (ii)] For making stiffening bandages, employed in treating fractures, sheeted fibrous material, such as felt, wadding, batting, woven cotton fabric (scrim, tarrycloth), flannel, or knitted fabric, coated or impregnated with a water-insoluble cellulose derivative, or a gum or resin, dissolved in a solvent, is enclosed in a closed container with sufficient solvent to maintain it in a flaccid condition until required for use. A suitable material comprises cotton cloth impregnated with a solution of nitrocellulose in a mixture of ethyl acetate and acetone, the solution containing boric acid as a fire retardant. The material may be in the form of strips rolled with interleaving material such as glassine, wax, paper, aluminium foil, or the material sold under the Registered Trade Mark " Cellophane."
Patent GB-531242-A (GB)
Title: Improvements in or relating to high-speed motor-boats
IPC: B63B3/00
Filed: 1939-03-25
Abstract: 531,242. Armed motor boats. PAINE, H. SCOTT-. March 25, 1939, No. 9411. [Class 113 (ii)] A vessel of the hard-chine type, consisting of a hull 10, deck 9, and wheelhouse 12, is constructed so that the sheer lines 11 provide a smoothly curved contour extending from a high freeboard portion forward to a lower platform aft. The freeboard aft may be about a third to a half of the freeboard forward. At the forward part the deck camber is less than that of the after part, and the centre line of the deck immediately adjacent the bow is sloped downwardly slightly. The sides 57 of the boat are flared outwards towards the gunwale, the flare increasing progressively from the transom to the stern. Two torpedo tubes 33 and torpedoes 34 are carried on the after part of the deck. The boat is armed with automatic gun-turrets 30, 31, to which access can be had below the deck. The wheelhouse 12 includes a conning bridge 62, as described in Specification 531,245, and the boat has three engines arranged as described in Specification 527,732.
Patent GB-1095832-A (GB)
Title: Improvements in the protection of ferrous constructions against corrosion
IPC: C23F13/14
Filed: 1965-03-05
Abstract: In a process for the protection of ferrous constructions against corrosion the sacrificial anode comprises a zinc alloy containing 0.02 to 5.0% of lanthanum which can be partially replaced by cerium. In an example misch metal .La.35% .Nd.15% .Ce.50% is used as the alloying agent
Patent GB-558336-A (GB)
Title: Improvements relating to electric devices having an enclosing envelope
IPC: H01J19/66
Filed: 1942-07-10
Abstract: 558,336. Thermionic-valve caps ; vacuum tubes. BRITISH THOMSON-HOUSTON CO., Ltd (General Electric Co.). July 10, 1942, No. 9631. [Class 38 (i)] [Also in Group XL] A pin contact 22 for a thermionic valve or other device with a closed envelope 13 in which the electrode &c. within the envelope are mounted on the lead-in conductors which are supported by the pin contacts, these having a contact portion 22a of smaller diameter in which the lead-in conductors 32 are secured and a portion 22b of larger diameter forming a thimble with a tapered edge for sealing into the glass envelope all as described in Specification 418,648, [Group XI], has the pins reinforced at the point where the larger and smaller portions meet. The annular portion 26 having a tendency to bend especially when heated, is supported by a collar 42 shaped to fit into the angle beneath it and secured by silver-soldering &c. The valve comprises an externally cooled anode 10 forming part of the envelope. A grid 36 wound on rods 34 is mounted on a plate 28 attached to the lead-in conductors 32. Cathode filaments 37 are carried by discs 38 supported on a lead-in 40 that is fitted with a disc 43 that with the plate 28 shields the tube base from heat &c.
Patent GB-909160-A (GB)
Title: Collapsible optical projection screen
IPC: G03B21/58
Filed: 1959-03-19
Abstract: 909,160. Optical projection screens. FISCHER, A. March 19, 1959 [March 20, 1958], No. 9638/59. Class 97 (1). A combination includes a collapsible optical projection screen and a stand therefor of which the screen is flexible and is attached at opposite parallel edges to a pair of stretchers attachable to the stand and on one of which the screen can be rolled while the other is of arcuate section with a radius of curvature corresponding to the external radius of the rolled screen and is arranged for partially embracing the rolled screen. As shown (Fig. 1), a screen 6 is attached at one edge to a stretcher 4 on which it may be rolled and at the other edge to a stretcher 1 of arcuate section so as to fit over the rolled screen between protective discs 5. Stretcher 1 may be supported by a hook 11 on the projection stand and a pin 16 carried by an adjustable ring clamp 14 engages stretcher 4 enabling the screen to be tensioned. When rolled up, the screen and stretchers may be placed in a tubular receptacle 7 which is provided with a dust-tight closure 8 and which may be lowered into the stand pillar 12 after release of a wedge action locking device indicated generally at 13 (cf. also Fig. 4, not shown). A dust-proof cap screwed on to the lower end of receptacle 7 normally prevents undesired withdrawal thereof from pillar 12 (cf. Fig. 4, not shown), but provision is made for use of the screen 6 and receptacle 7 without the stand 12. Legs 17, which may be tubular, rodlike or arcuate, may be either operatively attached-as shown at 18-or may be attached at 19 for transport purposes.
Patent GB-1386098-A (GB)
Title: Method of controllably altering the conductivity of a glassy amorphous material
IPC: G03G5/043
Filed: 1972-03-02
Abstract: 1386098 Electrostatic recording member INNOTECH CORP 2 March 1972 [9 March 1971 22 Feb 1972] 9672/72 Heading G2C [Also in Division H 1] An electrostatic image reproducing element includes an n-type semi-conductor substrate 92, e.g. of polycrystalline Si, and a p-type layer 91 of a doped lead-alumino-silicate glassy amorphous semi-conductor material (see Division H1). The surface of the layer 91 is charged to a voltage midway between the "dark" and "light" values of the avalanche breakdown voltage of the junction between layers 91 and 92, and on imagewise exposure the charge in the illuminated areas drains away through the junction due to the radiationinduced breakdown in these areas.
Patent GB-909989-A (GB)
Title: Electron emission current nuclear reactor
IPC: G21C3/40
Filed: 1961-03-16
Abstract: 909,989. Nuclear reactors; thermioniccathode tubes. GUNTHER, R. March 16, 1961 [March 19, 1960], No. 9695/61. Classes 39 (1) and 39 (4). A nuclear reactor comprising a thermionic electrode heated by fissile material and facing a collector electrode, is characterized in that a core which is in direct contact with the emitter surface and contains the fissile material consists of a material of good electrical conductivity at high temperatures and serves as a current conductor, the side of the core remote from the emitting surface being connected with current conductors which are layered preferably across the path of the current, layers at high operational temperature consisting of specially high heat-resistant material whereas layers at lower operational temperatures consist of materials having high electrical and low thermal conductivity. In Fig. 1, the emitting surface 1, which may be of metallic tungsten or zirconium carbide, rests on a core 2, which may be of graphite, molybdenum 92, or tungsten 184, provided with cavities 3 in which fissile material may be disposed. The current conductor connected to the core is composed of three layers 6, 7, 8 of which the layer 6 is of high heat-resistant material (such as the materials mentioned above for the core) and the other layers of materials chosen for high electrical and low thermal conductivities, such as iron for layer 7 and copper for layer 8. The materials may comprise isotopes which do not absorb neutrons strongly. The bottom layer is connected to a plate 9 which has a good reflecting surface, e.g. of aluminium or magnesia, facing the core to reduce thermal radiation loss from the core, and the output cable 10 is connected to plate 9. A collector plate 12 is disposed opposite the surface 1 and is connected to an annular ceramic body 13 connected to the core 2 to form an evacuable vessel. The conductor 14 leading to collector 12 may be composed of layers of different materials which form thermocouples generating additional current. Several of the units shown in Fig. 1 can be electrically connected in series and the units may be stacked one on top of the other, the gaps between neighbouring plates 9 and 16 as well as the spaces between plates 12 and 16 being filled with moderator or coolant material.
Patent GB-131387-A (GB)
Title: Improvements in Internal Combustion Engines.
Inventor: BOOTH JOHN THOMAS
IPC: F01L5/06
Filed: 1918-06-13
Abstract: 131,387. Booth, J. T., and Green, R. E. June 13, 1918. Addition to 129,326. Valves.-The invention consists in applying to engines having single cylinders or using crankcase compression, the valve described in the parent Specification. In the construction shown in Fig. 2, a transverse passage 9 in a piston valve 3 registers at its ends with ports 10, 11 communieating with the supply and delivery passages of a pair of crank chambers forming pumps. The passage 9 in the valve has a port 15 which opens into a supply pipe from a carburettor. In the position of the parts shown, the pump 13 is delivering a charge to the combustion chamber through the ports 17, 16 and the interior of the valve, the pump 12 inducing a charge through the port 15. Ports 19, 20 place the pump 12 in communication with the combustion space 2. Modified constructions are described in which a piston valve controls a single cylinder and its charging-pump. A further modification is described in which the engine has a cylinder and piston of two diameters, the annular space forming a pump.
Patent GB-254043-A (GB)
Title: Improvements in or relating to automatic telephones
IPC: H04M1/18
Filed: 1925-04-14
Abstract: 254,043. International Electric Co., Ltd., and Baldock, r. R. April 14, 1925. Impulse transmitters for automatic exchange systems. The working parts of an impulse transmitter for use in mines are enclosed in a gas-tight casing 3, and the spindle 4 of the dial plate 6 is provided with a gland or stuffing-box 5. A complete instrument 1 with its dial plate 2 may be employed, as shown, connection being made by means of a crank 10 and a stud 11 engaging one of the finger-holes, or the dial plate 2 may be removed, and the spindle 4 connected directly with the instrument 1. A supplementary restoring spring 7 is preferably provided, together with a pawl and ratchet brake.
Patent GB-577197-A (GB)
Title: Retractable work support for metal forming machines
IPC: B25B5/14
Filed: 1944-05-20
Abstract: 577,197. Work-holders. LOEWY ENGINEERING CO., Ltd., and SALTER, F. S. May 20,1944, No. 9775. [Classes 83 (iii) and 83 (iv)] A retractable work support or steady for an elongated workpiece A comprises a stationary frame 11, a carriage 12 movable along a track in the frame towards and away from the work, levers 15 pivoted to the carriage and having clamping jaws 16 for gripping the work, wedge-shaped faces 21 on the carriage and wedge-shaped inner ends 23 on the levers adapted, when the carriage and levers are in the work-engaging position, to abut against wedge-shaped faces 22, 24 respectively on the frame 11 so as to afford a rigid connection between the closed jaws and the stationary frame. Three .jaws are provided, one being fixed directly to the carriage and the other two carried by the levers 15. The two latter jaws may be locked together about the work by a hook 18 on one jaw engaging a stud 20 on the other. The carriage is fitted with wheels 13 engaging the tracks within the frame 11 which is secured to standards 10 on the machine. Application to lathes, reeling-machines, push presses and benches, stretching-machines, &c. is mentioned.
Patent GB-1034587-A (GB)
Title: Improvements in and relating to containers
IPC: B65D33/02
Filed: 1964-03-09
Abstract: 1,034,587. Plastic bags. ZELLSTOFFFABRIK WALDHOF. March 9, 1964 [March 8, 1963], No. 9787/64. Heading B8K. A bag or sack of plastics material is reinforced at its top and bottom by plastic-coated paper secured thereto by heat sealing or gluing. The paper may comprise a single perforated sheet or may be in separate strips.