baber/WOPTO huggingface dataset:
Patent GB-1481913-A (GB)
Title: Nuclear reactor comprising a system for the emergency injection of a liquid
IPC: G21C3/328
Filed: 1975-03-06
Abstract: 1481913 Reactors COMMISSARIAT A L'ENERGIE ATOMIQUE 6 March 1975 [12 March 1974] 9396/75 Heading G6C A system for the emergency injection of water into a reactor core, in particular a core of a p.w.r., in the event of failure of the primary coolant circuit, comprises a water-box 20 located above the reactor core 14 and supplied by ducts 30 (fitted with non-return valves 62) which traverse the lateral wall of the reactor vessel 2 and a plurality of sprinkler tubes 46 placed within the interior of the reactor fuel assemblies 40, the tubes 46 being open at their upper ends but closed at their lower ends, each fuel assembly 40 being provided with at least one of the tubes 46. Each fuel assembly 40 (Fig. 2) comprises end-plates 48, 50 and spacer grids 52, and is endowed with structural rigidity by means of the sprinkler-tubes 46 and control rod guide tubes 38. These two series of tubes are connected respectively to tubes 34, 36, the former opening into the water-box 20 and the latter into hollow columns 19 housing the control rods and their drive shafts 42. Each fuel assembly 40 comprises eight tubes 38, 46 each placed within the space occupied by four fuel pins 54, four of these tubes (46) being employed for emergency injections and four (38) serving to guide the control rod absorber-pins 44 which are operated in clusters of eight via the drive shafts 42. The tubes 46 are pierced by holes or vertical slits at intervals along their length in order to spray emerging injection water over the entire surface of the fuel pin cams of onequarter of the corresponding fuel assemblies 40. The tubes 34 and the sprinkler-tubes 46 are relatively displaceable, being connected by spigot joints (58) (Fig. 3, not shown). The top end-plates 48 of the fuel assemblies 40 and the upper core plate 32 may accordingly be relatively displaced as a result of differential thermal expansion and for this reason blade-openings 60 are provided between each plate 48 and the plate 32, being secured to the former. "Levitation" of the fuel assemblies under the action of the upward flow of the primary water used for normal cooling is thus prevented. In a modification (Fig. 4, not shown), the system comprises two superimposed waterboxes, the bottom wall of one constituting the top wall of the other, and each fuel assembly is provided with at least two sprinkler-tubes. The rectilinear tubes which connect at least one of the sprinkler-tubes to the upper waterbox pass through the lower water-box in leaktight manner.
Patent GB-330671-A (GB)
Title: Improved brake for use on road vehicles
IPC: F16D57/04
Filed: 1929-03-23
Abstract: 330,671. North, O. D., Hugh, P. G., and Scammell Lorries, Ltd. March 23, 1929. E n e r g y - absorbing elements. - A r o a d vehicle brake comprises rotary energy - absorbing means 1 of the kind used in fluidfriction dynamometers, coupled to a moving part of the vehicle and supplied with liquid by a pump 11, selectively operable valves 16, 17 being provided for isolating the source of liquid supply from the brake. The heat generated may be dissipated in the usual engine radiator. The rotor 30 of the dynamometer 1 is fixed on the main transmission shaft 2 and the dynamometer is connected by pipes 5, 6 to the water circulating system of the engine 3, the inlet pipe 5 being connected through the three-way valve 16 with the pump 11 and the bottom tank 9 of the radiator 4, while the outlet pipe 6 is connected through the valve 17 with the water outlet pipe 14 of the engine and the upper water tank 12 of the radiator. Gills 15 may be provided on the outlet pipe 6. The valves 16, 17 are connected together by a rod 18 and operated by a brake pedal 20 which when depressed opens the valve 17 and turns the valve 16 to connect the pipe 5 with the pipe 10 leading to the pump 11 and cut off the connection of the pipe 10 with the pipe 8 leading to the cylinder jackets. An auxiliary water tank 21 may be arranged in either of the pipes 5, 6. A separate water circulating pump may be employed for the brake and may be arranged to extract the water from the dynamometer when it is not in operation. A non-return valve may be arranged in the pipes leading to or from the dynamometer. For slow moving vehicles the dynamometer may be mounted on an independent shaft driven at an efficient speed by gearing from a moving part of the vehicle. The dynamometer casing may be free to swivel about the shaft, the pipe connections being flexible. The rotor 30 of the dynamometer has half ellipsoidal pockets 31, Fig. 2, arranged opposite pockets 33 on fixed rings 32 so that the water is driven by the rotor into the pockets of the stators and is returned to the rotor in a different direction.
Patent GB-558817-A (GB)
Title: Improvements in or relating to pressure gauges
IPC: G01L19/00
Filed: 1942-07-07
Abstract: 558,817. Pressure gauges. B. & R. PATENTS, Ltd., and BIRCH, G. C. R. July 7, 1942, No. 9437. [Class 106 (ii)] A fluid pressure gauge for giving high pressure and vacuum measurements comprises a Bourdon tube C, Fig. 1, communicating at its fixed end with the source of pressure, a flexible bellows D connected to the tube at its free end, a cage D' surrounding the bellows, and means for connecting the free end of the bellows with an indicating device. The Bourdon tube is provided with a screw-threaded boss C<SP>1</SP>, Fig. 2, to which the bellows is attached in a fluid-tight manner. The cage D' is screwed on to the boss in such a manner that at atmospheric pressure the free end D3 of the bellows will just bear against the end wall of the cage. An operating rod E extends through the end wall and is pivoted to one end of a lever E2 fulcrummed on a lug carried by the cage. The other end of the lever E<SP>2</SP> is connected by a link F' to one end of the sector arm F which operates a pinion on the indicating pointer spindle B2, the link being arranged tangentially to a circle coaxial with the fulcrum. The mechanism is adjusted to give a more or less uniform movement throughout the desired range on each side of a central zero position. On the pressure side the calibration will depend on the Bourdon tube construction and be independent of the bellows while on the vacuum side the calibration will depend almost entirely on the bellows construction.
Patent GB-912542-A (GB)
Title: A method and apparatus for making pile fabrics
IPC: D04H11/04
Filed: 1959-03-18
Abstract: 912,542. Making cemented pile fabrics. ETABLISSEMENTS L. A. CHAIGNAUD. March 18, 1959 [Nov. 18, 1958; Feb. 9, 1959], No. 9440/59. Class 142 (4). A carded web V is fed by rollers E into a channel F (made of transparent sheets), from which it is drawn by rollers G, H running at a lower speed, so that the web becomes corrugated. A backing S, which has been coated with adhesive, is guided on to one side of the web by endless belts T and fixed plates P. The unattached folds of the web are sheared off to produce cut pile. The rollers H may be closer together than the rollers G and may run more slowly in order to gather the corrugations closer together, and the belts T may run more slowly than the rollers H. An open mesh reinforcing fabric may be interposed between the backing S and the corrugated web, the two being brought into contact before the adhesive is applied; the adhesive passes through the reinforcing fabric to secure it to the backing as well as securing the corrugated web. Backing may be applied to both sides of the corrugated web, which is then cut along its mid-plane to make two fabrics.
Patent GB-491437-A (GB)
Title: Improvements in radio receivers employing the homodyne principle
IPC: H04B1/30
Filed: 1938-03-28
Abstract: 491,437. Valve circuits for wireless reception. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. March 28, 1938, No. 9449. Convention date, March 30, 1937. [Class 40 (v)] In a superheterodyne receiver in which an auxiliary homodyne oscillator 7 feeds an auxiliary oscillation of the same phase and frequency as the intermediate-frequency to the second detector 5 and in which the auxiliary oscillator is synchronized by means of a beat oscillation obtained in a rectifier 11 by interference between even harmonics derived by frequency multiplication from the intermediatefrequency itself and the auxiliary oscillations, the desired even harmonics (or either of these) are. selected by high-pass or band-pass filters 10, 13. The filters preferably have an attenuation peak in the non-pass range corresponding to the fundamental frequency or two peaks one on either side of this frequency.
Patent GB-628652-A (GB)
Title: Improvements in or relating to fluid pressure-operated electric switches
IPC: H01H35/38
Filed: 1947-04-09
Abstract: 628,652. Actuation of switches. VENNING, J. D. E., and VENNING & CO., Ltd., J. April 9, 1947, No. 9476. [Class 38(v)] A fluid-pressure op-. erated switch comprises a main piston 9 and a secondary piston 10, both exposed to the pressure in a pipe 5 and urged upwards by springs 18, 23, respectively, The pistons are interconnected by a lever 20 pivoted at 21 and bearing at one end beneath a shoulder 22 on a cup 17, and at its other end on the spring 23. Contacts 13, 14 are closed by an extension 15 of piston 9 when a predetermined pressure exists in the pipe 5, the spring 23 being adjustable for controlling this pressure. Contacts 13, 14 are mounted on a pivoted block 42, a spring 43 normally holding contact 13 against a stop 42<SP>1</SP>.
Patent GB-194325-A (GB)
Title: Improvements in or relating to mud- and life-guards for vehicles
IPC: B60R21/34
Filed: 1921-12-30
Abstract: 194,325. Ward, A. S. Dec. 30, 1921. Wheel - guards and obstruction - removers. - A combined mud and life guard for vehicles comprises a casing partly surrounding each wheel and having depending flaps, and a guard between the front wheels. Each wheel has an enclosing framework a, Fig. 2, one or both sides and the periphery of which are respectively filled in with metallic mesh b and sheet metal. The whole device may be mounted on a spring-controlled support. A metal framework covered with metallic netting h is provided between the front wheels. It may be suspended from the axle and there may be a hinged connection at each side for connecting to the wheel-enclosing frameworks a. In a preferred form of life-guard, Figs. 2, 9, a framework g slides upon stanchions i and is hung by a lever k. A knob l on the lever k is covered by a stop m held in place by an arm n, Fig. 10, retained against the action of a spring o by a pawl p. A ring q on the pawl p is connected to a control r led to an outrigger s on a mesh guard t, Fig. 2. A person or obstruction jumped by the guard t causes a slackening of the cord r, and release of the ring q and pawl p; the spring-controlled lever n is thus freed to move clear of the knob l and the guard g is lowered into action. A cord u is attached to the ring q so that the guard g can be lowered by the driver. Spring buffers, v, Fig. 2, may be fitted.
Patent GB-1496283-A (GB)
Title: Valves for fluids
IPC: F02B17/00
Filed: 1975-03-07
Abstract: 1496283 Rotary valve engines DANA CORP 7 March 1975 [8 March 1974 13 Dec 1974] 9488/75 Heading F1B The subject matter of this Specification is the same as that of Specification 1496281 but the claims are directed to a rotary valve having an exhaust passage extending diametrally therethrough and a tubular heat shield co-extensive with the passage and in spaced relationship with the walls thereof.
Patent GB-785844-A (GB)
Title: A pressure resistant casing for mine transformers
IPC: H01F27/08
Filed: 1955-04-01
Abstract: 785,844. Transformers. LICENTIA PATENT-VERWALTUNGS-GES. April 1, 1955 [April 2, 1954], No. 9539/55. Class 38 (2). A transformer for use in explosive atmospheres is housed in a pressure-resistive casing which comprises two side walls 3 made of corrugated sheet metal joined by two rounded portions 4 made of smooth metal. Ribs may be associated with the rounded portions 4 and/or with the side walls 3 to increase the stiffness thereof. Sledge runners 10 are provided on the casing or alternatively runners 12 may be fixed to the corrugated side walls.
Patent GB-1005658-A (GB)
Title: Oxidation of mercurous salts
Inventor: ROBERTS HUGH LEITHEAD
IPC: C07C45/31
Filed: 1963-03-11
Abstract: Unsaturated aldehydes or ketones are prepared by reacting an olefine containing at least three carbon atoms with a mercuric salt in an acid aqueous medium.  The mercurous salt obtained is concurrently re-oxidized to mercuric by means of oxygen and a metal of Group VIII of the Periodic Table or silver or gold which is not attacked by the said acid aqueous medium. In one example reference is made to the oxidation of propylene to acrolein using palladium or silica gel as oxygen transfer agent in the presence of mercuric sulphate.ALSO:A mercurous salt, e.g. sulphate, perchlorate or nitrate is oxidized to the corresponding mercuric salts by reaction with oxygen or air in an aqueous acid medium in the presence of a Group VIII metal or silver or gold as catalyst; the metal is unreactive towards the acid. 5-50% metal, e.g. Pd, Pt, or Ag may be finely divided in amount 1-5% on an inert support, e.g. silica or alumina.  Temperature may be 60-90 DEG C. and the acid in the acid aqueous medium may be the acid corresponding to the mercurous salt of normality 0.5 to 20.  The process may be used for concurrent oxidation of mercurous salt to mercuric in reactions in which olefins having at least 3 carbon atoms are oxidized to aldehydes or ketones in the presence of mercuric salts at temperatures 15-90 DEG  C.
Patent GB-855789-A (GB)
Title: Automatic safety valve for liquid level gauges
Inventor: VARGA OTTO HERMAN
IPC: G01F23/02
Filed: 1957-03-23
Abstract: 855,789. Gauge glasses. SEETRU Ltd. June 23, 1958 [March 23, 1957], No. 9589/57. Class 123(1) A valve 6 which closes automatically on breakage of a gauge glass 1 consists of a plastic or metal disc having a part-spherical upper surface provided with an annular groove in which is disposed an O- ring seal 9. The underside of the disc is slotted or has radial serrations to allow normal flow of liquid into and from the gauge glass. If the glass should break the valve disc is lifted by the excess flow and seats on a part-spherical surface 5 thus obturating said flow. A small seep hole may be provided in the disc to prevent the valve from seating due to vibration or mechanical shock. Specification 8427/13 is referred to.
Patent GB-440398-A (GB)
Title: Improvements in and relating to footwear
IPC: A43B7/06
Filed: 1934-03-27
Abstract: 440,398. Ventilating footwear. CALZATURA AERATA MEDUSA SOC. ANON., 16, Via Bettinelli, Castellanza, Italy. March 27, 1934, Nos. 9591 and 9592. Void [Abridged as open to inspection under Sect. 91 of the Acts, Oct. 25, 1934]. [Class 17 (ii)] Cavities are provided in rubber soled footwear in the sole or in a sock adjacent the foot wherein air is circulated to afford ventilation. The cavities may take the form shown of lateral recesses having longitudinal communicating channels 3 provided in the face 1 which is adjacent the foot. The recesses may also be connected by transverse channels and may be provided in areas at the toe and heel of the boot &c. The channels may, alternatively, be formed by applying ribs to the inner face of the insole or sole, or by interposing between these layers an apertured layer. The insole may be provided with perforations to admit air to the interior of the boot &c. below the foot.
Patent GB-375851-A (GB)
Title: Improvements in and relating to electric discharge devices
IPC: H01J61/067
Filed: 1931-03-30
Abstract: 375,851. Discharge apparatus. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Found, C. G. ; 148, Plymouth Avenue, Schenectady, New York, U.S.A.) March 30, 1931. No. 9652. Convention date, April 5, 1930. [Class 39 (i).] A thermionic cathode for electric discharge devices, for example glow discharge lamps, comprises a funnel-shaped shell open at the end of greater diameter and provided with means for heating the shell to an operating temperature. In one form the cathode comprises a coniform shell 1, Figs. 1 and 3, consisting of a base metal such as nickel or iron coated on its inner surface 2 with an electron-emitting material such as barium oxide, the exterior surface preferably being shiny. The heater consists of a wire 3 of tungsten, tantalum or other refractory metal wound on a support 4 of refractory insulating material such as beryllia, thoria, alumina or magnesia through which passes a molybdenum or tungsten conductor 5 connected to the inner end 6 of the resistance heater, the other end of the heater being connected to the shell 1 at 7. An end closure 8 is secured by welding or otherwise to the narrow portion of the shell, and a closure 9, apertured at 10 for the passage of the electrons, may be secured at the other end. An outer shell spaced at a short distance from the cathode may be provided to conserve the heat. The cathode is supported on conducting-wires 13, 14 respectively connected to the conductor 5 and the shell 1, and may have either its smaller or larger end directed towards the anode or anodes, the latter arrangement being shown in Fig. 2. The envelope 12 is charged with a gas or vapour such as neon, helium or mercury vapour, or a mixture of gases. Specification 356,745 is referred to.
Patent GB-330891-A (GB)
Title: Improvements in pistons
IPC: F16J1/16
Filed: 1929-03-26
Abstract: 330,891. Solver, E. March 26, 1929. Connecting-rods.-In a twostroke internal - combustion engine, the gudgeon-pin 2, Figs. 1 and 2, is formed with a surface 5 concentric with its axis, and with semicylindrical surfaces 21 eccentric to its axis. The parts 5, 21 may be integral with the gudgeon-pin, or on a sleeve secured to the gudgeonpin. Rotation is prevented by engagement of the ends of the parts 21 with flats 8, 81 formed on the gudgeon-pin bosses. Alternatively, the surfaces 21 may be formed on the gudgeon-pin bosses. The connecting-rod small-end is formed with a corresponding concentric surface 14 and eccentric surfaces 24. During the up-stroke, the surfaces 5, 14 engage and the surfaces 21, 24 are separated, permitting access of lubricant, which is supplied by passages 12. During the down-stroke, the surfaces 21, 24 engage and the surfaces 5, 14 are separated. Preferably the surfaces which engage on the down-stroke are of greater area than those which engage on the up-stroke. In a modification, Fig. 6, the outer and upper surface of the small-end 29 is formed eccentric to the gudgeon-pin axis and, during the down-stroke, this surface engages a similar eccentric surface 28 formed in a bracket 26 secured in the piston, while separation takes place between the gudgeon-pin and the lower bore 31 of the small-end. During the up-stroke the connecting-rod swings to the left, as shown, and the gudgeon-pin engages the surface 31, while the outer surface of the connecting-rod is separated from the surface 28.
Patent GB-1124983-A (GB)
Title: Improvements in spot welding machines
Inventor: PEDLEY FRED
IPC: B23K11/11
Filed: 1965-03-08
Abstract: 1,124,983. Welding by pressure. MIDDLETON SHEET METAL CO. Ltd. 4 March, 1966 [8 March, 1965], No. 9678/65. Heading B3R. A spot welding machine adapted to effect a ring of spot welds to form a seal around a hole in two lapped components 1 has a welding electrode b<SP>1</SP> carried by a rotatable indexing head B in an eccentric position relative to a spindle b which extends through the head B and through the components 1 to a lead C forming a secondary electrode; the spindle b is attached to the ram A<SP>2</SP> of a fluid actuated cylinder A<SP>1</SP> which draws the spindle inwards thereby clamping the components 1 between the electrode b<SP>1</SP> and lead C each time a spot weld is to be made. An insulating foot member 6<SP>2</SP> attached to the indexing head B is provided to balance the pressure on the electrode b<SP>1</SP> during welding. The electrode b<SP>1</SP> is supplied with current by a lead C<SP>1</SP>.
Patent GB-164197-A (GB)
Title: Improvements in or relating to reciprocating pumps
IPC: F04B53/10
Filed: 1920-04-06
Abstract: 164,197. Fulsometer Engineering Co., Ltd., and Bj÷rnstad, J. April 6, 1920. Air vessels; suction and delivery reservoirs; materials, special; strainers; valves, arrangement of; valves, facilitating removal of.-In a reciprocating pump, the suction valves m and delivery valves consist of elastic annular members of the same size seated in a series of grooves turned upon the interior and exterior of a circular body i which extends into both the suction and delivery chambers of the pump. The pump casing is divided into suction and delivery chambers by a. partition f engaging a collar g on the member i. The member i forms the bottom of a stuffing- box for the plunger c, and is held in place by a cover r. An annular strainer may be arranged in the suction chamber. Air vessels g, h may be arranged close to the valves.
Patent GB-269726-A (GB)
Title: Improvements in electric power plants
IPC: H02M7/54
Filed: 1926-04-14
Abstract: 269,726. Calverley, J. E., and Highfield, W. E. April 14, 1926. Commutator switching-arrangements; polyphase transformers. - An electric power plant suitable for producing high tension direct current comprises a rotary generator having a closed ring winding A having tappings connected through switches K to the primary windings P of a polyphase transformer arrangement the secondary windings S of which form a closed ring having tappings connected to commutator segments co-operating with rotary brushes B from which direct current is taken. In the arrangement according to Fig. 3, the primary windings P are arranged in delta-connected groups of three, each group being arranged on a threephase group of cores and connected to points 120‹ apart on the winding A of the generator. This arrangement permits of circulation externally of the generator of third harmonic currents required to maintain the balance of ampere turns on the transformer cores in view of the rectangular wave form of the current in the secondary winding sections. In an alternative arrangement this balance is attained by connecting end to end the individual sections of the three groups of primary windings and connecting the ends of the groups and the junction points between sections to corresponding points on the generator winding so as to apply to the primary winding sections an e.,m.f. of wave form determined by the e.m.f. of the corresponding sections of the generator winding. In addition, each three phase group of transformer cores may be provided with a short circuited delta-connected winding. The full lines in Fig. 5 indicate the above arrangement when a single primary winding is employed on each core. In order to utilize uniformly distributed tappings all round the generator winding A, each core may be provided with two primary windings arranged so as to double the number of primary phases, the second set of primary windings and their connections to the generator winding being indicated in dotted lines. The primary winding may also be made to serve as a secondary winding, tappings being taken to a commutator the brush gear of which is connected externally in series with that co-operating with the independent secondary windings. The brush gear may be driven mechanically from the generator shaft or may be driven by a synchronous motor N, Fig. 3. The switches K enable the generator and transformer system to be isolated, whilst the generator and brush gear are being run up to speed. Specifications 150,824 and 266,902 are referred to.