baber/WOPTO huggingface dataset:
Patent GB-1044496-A (GB)
Title: Burst can detection system
Inventor: GUYONVARH MICHEL
IPC: G01T7/06
Filed: 1965-05-10
Abstract: 1,044,496. Reactors. COMMISSARIAT A L'ENERGIE ATOMIQUE. May 10, 1965 May 13,1964], No. 19648/65. Heading G6C. A burst can detection system for gas-cooled nuclear reactors uses a plurality of detection units each formed by the association of a delayed neutron detector and an electrostatic collection detector. Each delayed neutron detector comprises a filter for removing iodine and bromine from samples of the coolant gas and a device for measuring the neutron emission of the impregnated filter. Downstream from the filter is a volume in which the gas to be analysed arrives after filtration and remains for a period of time sufficient for the appearance of rubidium and caesium ions, daughter products of the gaseous fission products. These ions are detected by the electrostatic collection detector which comprises a chamber in which a repulsion electrode at a high +ve. potential effects the deposition of the ions over a zone of a drum connected to earth. After a period sufficient for an adequate number of ions to have been collected, the drum is rotated to bring the zone opposite a scintillation counter fitted with a photo-multiplier. The reactor fuel channels are grouped together in assemblies which are in turn divided into sub-assemblies, each of which is connected in turn through a valve system to a scanning circuit provided with a detection unit. In addition, each channel assembly can be connected by means of a valve system with a burst follower circuit provided with a detection unit. Within each channel assembly, each sub-assembly is successively scanned and when the activity detected in a single sub-assembly by the electrostatic collection detector exceeds a predetermined threshold, this sub-assembly is connected to the burst follower circuit in order to identify the faulty channel. When, however, the activity detected by all the electrostatic collection detectors simultaneously exceeds a predetermined threshold, that sub-assembly among those simultaneously scanned which has an activity in excess of the mean value of the sub-assembly activities is determined, the activity indicated by the delayed neutron detector in respect of this sub-assembly is checked as to whether it exceeds another predetermined threshold and, should this prove to be the case, this sub-assembly is connected to the burst follower circuit for identification of the faulty channel. The invention permits the localization of a faulty channel irrespective of the type of can failure and is particularly suitable for use with ceramic fuel reactors in which, when a crack forms in a can, a burst of radio-active gas escapes and rapidly rises with the coolant gas with the result that the electrostatic collection detectors are liable to be " blinded " by the general high radio-activity of the coolant gas.
Patent GB-1505188-A (GB)
Title: Microtron accelerator comprising a hyperfrequency resonant system
IPC: H01P7/06
Filed: 1975-05-09
Abstract: 1505188 Particle accelerators CGR-MEV 9 May 1975 [10 May 1974] 19700/75 Heading H1D The phase acceptance zone of a microtron accelerator is increased by employing as the high frequency resonant system a resonant cavity excited by an external source at frequency F, together with a resonant element tuned to frequency 2F and excited by the accelerated particle beam, tuning means being provided to adjust the phase and amplitude of the F and 2F signals for acceleration. As described, the coupled cavities 10, 1], 12, Fig. 2, are excited via a part 11 at frequency F, and the attached cavity 3 is tuned to 2F. In Fig. 3, the cavity 50 tuned to frequency F acts also as the resonant element excitable at frequency 2F, the plungers 51, located in the symmetrical transverse plane, at which the magnetic field is substantially zero for the second harmonic, affecting only the fundamental mode, while plungers 52 and 53 affect both the fundamental and the harmonic modes.
Patent GB-933375-A (GB)
Title: Improvements in or relating to catheters
Inventor: PINNELL CHARLES ROSS
IPC: A61F2/958
Filed: 1961-05-31
Abstract: In a balloon catheter that area of the catheter tube which lies within the balloon is reinforced by flexible strands disposed substantially parallel to the axis of the tube.  The reinforcing strands may be individual filaments or spun yarns and may be of natural or synthetic materials.  They may be bonded to the outer surface of the tube or embedded in the tube wall.  The provision of such reinforcement prevents stretching of the catheter tube, with consequent reduction of its cross-section, when the balloon is inflated.
Patent GB-1125068-A (GB)
Title: Switch mechanism for multi-filament electric light bulbs
Inventor: FRISBY DAVID CEDRIC
IPC: H01H15/10
Filed: 1967-04-28
Abstract: 1,125,068. Mechanical switches; electric lamp bulb caps incorporating switches. PRESSAC Ltd. 11 Aug., 1967 [28 April, 1967], No. 19736/67. Headings H1F and H1N. A switch mechanism for incorporating in the caps of multi-filament electric light bulbs and which is operable to close a circuit to a required number of filaments comprises a body moulding (1, 2) fitted with contacts 5 for the filaments and a sinuous springy contact strip 11 mounted adjacent to a slider 7, 8 so as to bridge all of the filament contacts 5 when in a central position, the slider 7, 8 being displaceable in opposite directions from the central position and being so constructed that when moved in one direction or the other it allows one end of springy contact 11 to spring away from and break contact with one of the filament contacts 5. Contact strip 11 may be of beryllium copper and the body moulding (1, 2) of nylon. The slider is retained in position by grooves 9 on slider centre portion 8 engaging a locating pin 15. The body moulding may be encased in a brass cap provided with bayonet pins (19).
Patent GB-967104-A (GB)
Title: Improvements in or relating to electric wave filters
IPC: H03H7/01
Filed: 1962-05-23
Abstract: 967,104. Filter networks. KARKAR ELECTRONICS Inc. May 23, 1962 [Oct. 6, 1961], No. 19900/62. Heading H3U. A wave filter comprises at least four impedance arms arranged in a ladder formation, the arms having at least two tuned circuits providing two resonances giving two points of high attenuation in the stop band, the attenuation peaks of the filter being independent of the poles and zeros defined by the equations of the input and output image impedances of the filter. The low-pass filter of Fig. 1 comprises parallel tuned circuits # and # in the series arms and capacitative shunt arms. The input image impedance of this filter is of class # #1 * and the output image impedance of class # # 2* using the Cauer image impedance notation. In the image impedance equation shown (Fig. 2), P is the frequency parameter normalized with respect to the cut-off frequency #c=##C 1 #C 2 , where #C 1  and #C 2  are the upper and lower cut-off frequencies respectively. In the diagram of Fig. 2, poles and zeros are indicated in the usual manner and the cut-off frequency indicated by the symbol V. The attenuation response, having peaks at 8 and X is shown in Fig. 3. According to the invention, neither of these peaks is located at α=1.25 or m=0.6. Thus it is possible to choose the input and output impedances to provide matching without recourse to extra sections. The Specification also describes high-pass and band-pass filters designed in an analogous manner. The filters may be used in combination with known filters. Where suitable, piezo-electric crystals may replace the LC combinations.
Patent GB-445077-A (GB)
Title: Improvements in and relating to sheet-metal structural members
IPC: C11B13/00
Filed: 1935-07-12
Abstract: 445,077. Metal plates; door bodies. JUNKERS, T., 18, Hindenbnrgstrasse, Gauting, Munich, Germany, [Representative of JUNKERS, H.] July 12, 1935, No. 19953. Convention date, July 13, 1934. [Classes 20 (ii), 20 (iii), and 87 (i)] A sheet-metal structural member is preferably rectangular and has a flange 2 bent up all round and a continuously curved dished portion 1. Two such members may be combined to form a hollow member, Fig. 4, and these hollow members may be assembled to form walls &c. The hollow members may also be set up side by side and held at the ends by channels 13, 14 to constitute a door panel.
Patent GB-147907-A (GB)
Title: Process for the production of polyvalent alcohols
IPC: C07C31/18
Filed: 1920-07-09
Abstract: The process for the production of glycol &c. described in the parent Specification is effected in the presence of water in large excess compared with the chlorhydrocarbon.  This may be effected by introducing the chlorhydrocarbon gradually in small quantities into the liquid contained in the autoclave.  In place of using alkali or alkaline-earth bicarbonates, the carbonates may be employed, these being bicarbonated by the carbon dioxide produced. Catalytic metals such as copper may be added.
Patent GB-1521877-A (GB)
Title: Process for colouring wood
IPC: B27K5/02
Filed: 1977-05-12
Abstract: 1521877 Colouring wood K C BUGG 12 May 1977 20060/77 Heading D1B Wood is coloured by applying a coating of a silicone liquid and heating to above 170‹C but below the ignition temperature of the wood, the silicone liquid having a viscosity of at least 75 centistokes at the treatment temperature and being inert to the primary constituents of the wood. Dimethyl siloxane and phenylmethyl polysiloxane polymers may be used in heated baths of liquor, alternatively the wood is heated after being removed from the bath, infra-red heaters or hot air ovens being used.
Patent GB-294244-A (GB)
Title: Improvements in apparatus for extinguishing back ignitions in mercury vapour rectifiers
IPC: H02H7/127
Filed: 1928-07-10
Abstract: 294,244. Akt.-Ges. Brown, Boveri, et Cie. July 21, 1927, [Convention date]. Vapour apparatus, arrangements of.-In means for extinguishing back ignitions in mercury vapour rectifiers by applying a negative potential to grids associated with the anodes, a glow discharge tube is used to control the operation of a switch in the grid circuits in response to excess current or lack of balance in the load circuit of the rectifier. In the arrangement shown in Fig. 1, excess current in the load circuit, which includes the primary a of a transformer, raises the secondary voltage of that transformer sufficiently to cause a discharge in the tube b thus closing the switch c and applying negative potential from a battery e to the grids f of the rectifier g. In the arrangement shown in Fig. 2, current transformers a<1>, a<2>, a<3> are provided in each line and connected as shown through glow tubes b<1>, b<2>, b<3> and resistances d'. d<2>, d<3> to the energizing coil c of the switch so that in the event of unbalance arising, the coil is energized and the switch passes from the position shown, in which a positive potential is applied to the grids f from a battery e', to the alternative position in which a negative potential is applied to the grids from a battery e<2>. Operation of the switch may be retarded by providing one of the contacts with a resilient extension.
Patent GB-709484-A (GB)
Title: Improvements in and relating to the casting of pottery articles
IPC: B28B1/28
Filed: 1951-08-27
Abstract: 709,484. Slip-casting pottery. ROYAL CROWN DERBY PORCELAIN CO., Ltd., and ROBINSON, P. I. Aug. 1, 1952 [Aug. 27, 1951], No. 20103/51. Class 87 (2) A mould 47 is supported in a mould carrier of a pottery casting apparatus as described in Specification 652,418 or Specification 685,108 by providing projections 52 on the mould ring which projections engage under members 53 on the uprights 46 of the mould carrier.. The mould is forced upwardly, to force the projections 52 against the members 53 by a spring (49)-urged table 48.. To remove the mould, it is rotated, slightly to release the projections from the members. The mould ring comprises a plaster part 50 and metal rim 51, the plaster part having a recess 50a to receive the top of the mould.
Patent GB-1397476-A (GB)
Title: Internal combustion engine with a silenced cooling air system
IPC: F02M35/12
Filed: 1973-04-27
Abstract: 1397476 Cooling 1C engines; silencing gaseous flow MOTORENFABRIK HATZ KG 27 April 1973 [8 May 1972 15 June 1972] 20111/73 Heading F1B Cooling air from a blower 24 is directed over the cylinder or cylinders 10a .... 10d and ducts 26, 30, 32 defining the air-flow path are arranged to effect silencing. The duct walls may be interiorly lined with sound-absorbing material, (26a), Fig. 4 (not shown), e.g. rock wool, retained in place by perforated plate (26b) or mesh. The air from the blower is in part supplied as combustion air to the intake manifold 36 via a cyclone separator 40 and a paper filter element 38p within a removable cover 38. The exhaust manifold outlet pipe 34 opens to the cooling air discharge duct 32. In a single cylinder engine, Figs. 5 to 7 (not shown), the inlet duct (130) of the blower (24') provides an elongated spiral flow path. Reference has been directed by the Comptroller to Specification 1263979.
Patent GB-224286-A (GB)
Title: Improvements in or relating to containers for liquid, semi-liquid and plastic mediums
IPC: B65D83/00
Filed: 1923-08-07
Abstract: 224,286. Adam, J. C. Aug. 7, 1923. Piston apparatus for discharging receptacles. - In apparatus of the kind in which a container having a lid or disc to act as a plunger is adapted to be placed in a framework having a screw bearing on the disc to expel the contents, an elongated nozzle on the framework registers with an opening made in the container. The container 1 is held between plates 5 by bolts 6, a screw 8 in the upper plate bearing on the flanged lid 2 fitting within the container, and a flexible nozzle being secured to the lower plate. The upper plate is bent at 5a for attachment to a support. Removal of the lid is prevented by a rib or tongues at the top. In a modification, the container is placed in a casing in the lid of which is a hollow screw to which the nozzle is attached.
Patent GB-326731-A (GB)
Title: Improvements in clockwork devices for pigeon competition flights and the like
IPC: G07C1/26
Filed: 1929-07-01
Abstract: 326,731. Martens, H. July 1, 1929. Addition to 323,442. Time-checking apparatus.-In apparatus particularly for timing pigeon flights in which needles carried by an auxiliary balance are caused to puncture a record-disc to detect tampering by shaking as described in, the parent Specification, the springs therein referred to are used only to maintain the balance in the mid-position and additional springs are provided to ensure the withdrawal of the needles from the record-disc. As shown in Figs. 1 and 2, the balance lever 4 is given a curvature corresponding to that of the casing 1 and each arm carries an adjustable weight 5 and needle 6. The equilibrium of the balance is maintained by two small blade springs 8, 8<1>. Each of the weights has a spring 9 terminating near the upper plate of a pair of superposed plates 7, 7<1> through which the record-disc passes, said springs acting to extract the corresponding needle when the balance is oscillated.
Patent GB-1436947-A (GB)
Title: Electronic switch with holding circuit
IPC: H03K3/281
Filed: 1973-04-27
Abstract: 1436947 Bi-stable circuits LICENTIA PATENT-VERWALTUNGS-GmbH 27 April 1973 [29 April 1972] 20167/73 Heading H3T [Also in Division H2] The triggering input of a bi-stable circuit is shunted by a non-linear resistor which carries current in the set state of the circuit to lower its resistance and thus to make the circuit less responsive to spurious reset pulses of opposite polarity to the set pulses. The figure shows two complementary type bi-stable circuits which, when conductive, cause corresponding lamps to light, a common emitter resistor being provided so that when one circuit is set by a positive pulse at 11 or 31 the other is reset. A Zener diode 23, 43 across each input becomes conductive in the conductive state of the circuit so that spurious negative pulses arriving for example through the base-emitter capacitance of transistor 12 or 32 or other triggering transistors in parallel therewith, do not reset the circuit.
Patent GB-499040-A (GB)
Title: Improvements in and relating to method and apparatus for injecting liquid fuel for internal combustion engines
IPC: F02M61/04
Filed: 1937-07-21
Abstract: 499,040. Supplying liquid fuel. ZUMBUSCH, P. C. July 21, 1937, No. 20186. [Class 7 (iii)] [Also in Group XXVIII] Liquid fuel deposited in the space between a disc 4 and the end of an injector casing 1 is forced into the engine by movement of the disc towards the casing. The disc is carried by a pump plunger 5 which is raised, during its suction stroke, when pins 14 are released to enable a spring- pressed sleeve 10 to engage a flange 9 on a member 7 threaded into the plunger 5. When the plunger is forced downwards by the engagement of engine-operated means with the pins 14, fuel is delivered past a non-return valve 21 through a passage 23 to the space between the disc and the casing where it is retained until the disc approaches the casing during the following suction stroke of the plunger. To adjust the stroke of the plunger, a wheel 8 is rotated to screw split portions 7<1> of the member 7 into or out of the plunger. The space between the disc 4 and the casing of the injector may be open at the periphery or may contain one or more diaphragms 25, Fig. 5, of spring steel through which the fuel is forced. The diaphragms may be centred on a slotted spacer 3<1>.
Patent GB-373469-A (GB)
Title: Combined automatically and manually operated brake for use on sugar-cane tram-trucksand the like
IPC: B61H13/02
Filed: 1931-07-14
Abstract: 373,469. Vehicle brakes. CANTWELL, D., Police Station, Tully, North Queensland, Australia. July 14, 1931, No. 20192. Convention date, July 23, 1930. [Class 103 (i).] The brakes of sugar-cane train trucks are automatically applied by a spring upon slackening of the coupling as when the vehicle is stationary or is descending a hill and are released by the tractive effort on the coupling. The brake may also be released by the inward movement of the buffer when backing and by a hand-lever. A lever A is connected to brake blocks C, D by links F, G and by a rod B to the coupling L. When there is no pull on the coupling it swings downwardly and the brake shoes are applied by a spring E connected to the lever A. Inward movement of the buffer Z actuates the lever A to release the brake through a link U<2> and a lever U pivoted on a rod U<1>. To render the doupling ineffective for taking off the brake, the end of the rod B is enlarged in such a manner that it cannot pass through the horizontal part of a right-angled slot A<1> in the lever A but can pass freely through the vertical part of the slot towards which it can be drawn against the action of a spring I by connections P, S<1> and a hand-lever at the end of the truck. When this has been done the brakes can be put on and off by operating either of two interconnected levers Q, R, connected to the lever A by the link V<2>.
Patent GB-668875-A (GB)
Title: Electrolysis cell, in particular for the electrolytic refining of aluminium
Inventor: RAVIER EMILE FRANCIS
IPC: C25C3/08
Filed: 1949-08-03
Abstract: 668,875. Electrolytic refining of aluminium. COMPAGNIE DE PRODUITS CHIMIQUES ET ELECTROMETALLURGIQUES ALAIS, FROGES, ET CAMARGUE. Aug. 3, 1949 [Aug. 4, 1948], No. 20205/49. Class 41. An electrolytic cell for refining aluminium by a fused electrolyte process operating with three superposed liquid layers comprises electricallyconductive members a, b with substantially horizontal faces, the member a connected to the position pole of the source of current being at a lower level than the member b which is connected to the negative pole and is covered by the liquid refined metal. The members a, bare separated by a vertical wall of impervious brickwork c. The cell is completely closed by a vault g.
Patent GB-245683-A (GB)
Title: Improvements relating to means for effecting solutions of solids in liquids
IPC: B01F1/00
Filed: 1925-08-12
Abstract: 245,683. Wolff & Co., Czapek, E., and Weingand, R. Aug. 12, 1925. Solids, treating with liquids.- In solution-making apparatus consisting of two containers, in one of which the solid to be dissolved is disposed, both contamers being connected by pipes or other means at the top and bottom so as to allow circulation of the solvent in consequence of the increase of speific gravity of the solution produced, regulating mtans such as a valve are provided to regulate the flow of solvent between the containers. The containers A, B, Fig. 1, are connected by conduits C, D at the bottom and top respectively. A valve E which regulates the passage is provided in the conduit C. The solid F to be dissolved is placed in the container A on a sieve G, and solvent is admitted through a cock H. The solution descends in the vessel A and flows through the conduit C, displacing the lighter solvent, which flows from the vessel B into the vessel A through the conduit D. The conduit D may be replaced by a siphon O which may also serve to introduce the solvent through a cock Q. The two vessels may be arranged one within the other, the vessel A, Fig. 2, being preferably funnel-shaped with a depending tube J, at the bottom of which is a cone K, adjustable by means of a screw L, to regulate the rate of circulation of the solvent. The solid to be dissolved is placed on a sieve N. In a modification, the vessel A, Fig. 3, in which is placed the solid F, is connected to a vessel B<1> by means of a pipe J, preferably of small diameter. At the bottom of the pipe J is a conical regulating valve K, and the vessel B<1> is connected to a vessel B by a pipe J<1> surrounding the pipe J, the vessel B surrounding the vessel A. The heat of solution is here employed to heat the solvent as the latter rises in the tube J<1>.
Patent GB-896162-A (GB)
Title: Improvements in the control of regulators
Inventor: TAIT THOMAS JOHN
IPC: G05F1/14
Filed: 1959-06-12
Abstract: 896,162. Boosting transformers. BRENTFORD TRANSFORMERS Ltd. June 2, 1960 [June 12, 1959], No. 20275/59. Addition to 830,224. Class 38 (4). In a voltage regulator as described in the parent Specification only one motor is employed to move the main and control winding contacts. A reversible motor 1 drives the control winding contacts 2, also through a slipping clutch 3 and a differential gear 4, the main winding contacts 6. The main winding contacts are arranged to reach their selected positions slightly ahead of the terminal positions of the control winding contacts, the slipping clutch accommodating the difference in movement. The main winding contact drawing current at any one time is locked by a brake 5. The isolating switches 9, 10 (Figs. 2 and 3 of the parent Specification) may optionally be operated mechanically through a snap-action device, either from the same motor, or a separate motor.