baber/WOPTO huggingface dataset:
Patent GB-964556-A (GB)
Title: Ammunition safety device
IPC: F42B39/20
Filed: 1962-06-29
Abstract: 964,556. Ammunition safety devices. C. O. J. NORDZELL. June 29, 1962, No. 25022/62. Heading F3A. A body charged with a main explosive is provided with a heat sensitive protective charge which is adapted at its igniting temperature to create an opening in the wall of the body without causing the main charge to detonate thereby minimizing the explosive effect on ignition of the main charge. In one embodiment, a projectile comprises a cover 3, which may have a handle, a detonator 4, a protective charge 5 and a plug 6 which may, for example, be made of wood, plastics, cork or metal. These components, preferably formed as a unit, are applied to the body while in storage, the cover 3 being of high thermal conductivity or alternatively provided with a channel 9 and a meltable seal 10 and the detonator 4 respectively containing a temperature-sensitive igniter or low explosive. On ignition of charge 5 a sufficiently large opening is formed to allow main charge 2 and its detonator 2a to burn or melt without detonating.
Patent GB-823117-A (GB)
Title: Improvements relating to arrangements for controlling the supply of combustion air to a heater
IPC: F23L17/00
Filed: 1957-08-08
Abstract: 823,117. Regulating air supply. CARDER, N. Aug. 8, 1957 [Aug. 9, 1956], No. 25075/57. Class 126 [Also in Group XII] The amount of combustion air passing to a heater burning liquid or gaseous fuel is determined by the position of a valve 15, Fig. 2, over air passage slots 9 in a housing 11. The valve 15 is pivotally connected to the housing 11 and moves under the action of pressure reductions within the combustion space 18, Fig. 1, acting through channels leading to the housing 11. The combustion space 18 is also connected to a chamber 13 within an unapertured housing 12 by a limited channel 17, in which chamber a valve 14 is rotatably mounted, which in turn is connected to a common rotating shaft 16 together with the valve 15 so that rotation of valve 14 also adjusts the valve 15. An air conduit 21 closed by a valve 22 coupled to a fuel supply cock and an adjustable air spray 23 are fitted to the housing 13 to decrease the influence of valve 14 if desired. In a modification the housing 11 is replaced by a housing 1, Fig. 4, which acts as part of the chimney and which has a balanced wall portion 4 pivotally connected thereto forming a valve which acts under pressure reduction within the housing. The valve 4 has a curved segment 5 to close the opening left in the wall of the housing during inward movement of the valve to prevent air flowing into the housing and so achieve a constant quantity of gases flowing past the valve and maintain an air supply to the heater to maintain maximum combustion. In a further modification the housing 11 is replaced by a valve 24, Fig. 6, in the chimney, which valve is turned by rotation of the valve 14 in the chamber 13 by the shaft 16.
Patent GB-1405804-A (GB)
Title: Multiple-digit gaseous discharge display device and method of manufacturing the same
IPC: H01J17/49
Filed: 1973-05-25
Abstract: 1405804 Gas discharge display panels; cathode materials HITACHI Ltd 25 May 1973 [1 June 1972] 25079/73 Heading H1D A method of manufacturing a multiple-digit gaseous discharge display device includes the steps of: (a) multi-level printing on an unsintered dielectric substrate 3 a plurality of sets of cathode 4, each set being associated with a respective digit, a plurality of sets of anodes 5, 6 each associated with a respective one of said cathode sets, a plurality of cathode terminals 8, each cathode terminal being associated with respective corresponding cathodes of said cathode sets, a plurality of wires (not shown) for connecting the said corresponding cathode of the cathode sets to their associated cathode terminals, a plurality of anode terminals 8 for said anode sets, a plurality of wires (not shown) each wire connecting a respective one of said anode sets to a respective anode terminal, and a plurality of dielectric layers to provide an unsintered multi-layer electrode structure; and (b) sintering said unsintered multi-layer electrode structure. A partition plate 2 disposed on the substrate 3 has a plurality of spaced openings corresponding individually to each digit so as to define respective discharge spaces. A front plate 1 disposed on said partition plate 2 is transparent at least at those portions opposite the respective digits. The outer periphery of the laminated structure is hermetically sealed. The gas filling may be neon or argon or a mixture thereof. The steps of printing the cathodes 4, anodes 5 and 6, auxiliary electrodes 7 representing decimal points, and the connections to terminals 8, and the provision of interposed insulating layers are described in detail (Figs. 2a to 2h, not shown). The insulating material may be a paste of alumina powderwith a binder of polyvinylbutyral and a solvent of butylcarbitol acetate which is dried into sheet form. The electrode and connection material may be a powder of W, Mo, Mn, Ti or Pt or a mixture or a paste of an oxide of those metals with a binder and solvent as above.
Patent GB-186904-A (GB)
Title: Improvements in mechanism for operating brakes on motor vehicles
IPC: B60T11/04
Filed: 1922-09-16
Abstract: 186,904. Conley, T. J. Oct. 5, 1921, [Convention date]. Controllling-apparatus, arrangement of transmission gear in conjunction with. - The rear wheel band brakes 12 of a motor vehicle are operated by rods 10 connected to levers 5 on a rock-shaft 2 which is bent at 6 so as to pass below the drive shaft casing of the vehicle. The shaft 2 is rocked by a pedal 8<a>. The rods 10 have screwed ends 15 for adjusting the effective length, and releasing springs 18 arranged between adjustable stops 19, and fixed brackets 16 which may be mounted on the running board brackets 17.
Patent GB-1152702-A (GB)
Title: Improvements in or relating to D.C. Amplifiers.
Inventor: STOPFORD GRAHAM MOLYNEUX
IPC: H03F1/30
Filed: 1965-06-15
Abstract: 1,152,702. D.C. amplifiers. FIELDEN ELECTRONICS Ltd. 27 May, 1966 [15 June, 1965], No. 25195/65. Heading H3T. In a D.C. amplifier having a differential amplifier 21, 22; 32, 33, a first switching means 40 periodically shorts the input 28, 29 of the amplifier to zero for a minor part of the switching period and a second switching means 41 operating simultaneously with the first switching means connects the output of the amplifier to a feedback circuit 42-44 which operates to reduce the output substantially to zero when the input is shorted, and the feedback circuit includes a storage means 43, which maintains this level of feedback during the intervals when the feedback circuit is disconnected from the output. The feedback circuit stabilizes the amplifier against drift by having a short time constant R-C network 42, 43 which charges from the output of the amplifier when switch 41 is closed, the capacitor 43 and resistor 44 providing a long time constant circuit so that the feedback is maintained constant when the switch 41 is opened. In an alternative amplifier (Fig. 1, not shown), the feedback circuit includes a differential amplifier (9) which controls a heater element (5) associated with a temperature-sensitive resistor (4) connected so as to provide the above control of the output.
Patent GB-1222174-A (GB)
Title: Improved control means for electric motors
IPC: H02P7/295
Filed: 1968-05-27
Abstract: 1,222,174. Mixers; controlling driving mechanisms. JOHN OSTER MFG. CO. 27 May, 1968 [12 June, 1967], No. 25282/68. Heading B1C. [Also in Division H2] In a domestic mixer-blender the electric motor driving the knives is intermittently operated whereby the mass of rotating material falls back to the knives. The number of cycles of intermittent operation is controlled by a rheostat knob 48 Fig. 1 associated with a timer control circuit (see Division H2). A speed control system is also described in which push buttons 45 select the required speed. Slide switch 47 selects normal or intermittent operation. The timer circuit is initiated by momentary depression of button 46 which starts the motor running for the preset number of operations.
Patent GB-497457-A (GB)
Title: Improvements in and relating to electric discharge devices
IPC: H01J43/02
Filed: 1937-09-17
Abstract: 497,457. Discharge apparatus ; valve circuits. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 17, 1937, No. 25305. Convention date, Sept. 18, 1936. [Classes 39 (i) and 40 (v)] In light - sensitive relay apparatus, a photo - electric control electrode 3 connected to the incandescent or other cathode 1 through a potential source 5 and high resistance 4 receives primary electrons from the cathode 1 and emits secondary electrons to the anode 2. The voltage of the source 5 is so adjusted that the discharge is stable when the illumination is below a predetermined amount and becomes unstable when this amount is exceeded, giving a sudden large increase in secondary emission from the electrode 3, and so in the anode current, to operate a relay &c. in the circuit 6. Grids 7, 8 may be provided and the device may be adjusted to respond at different illuminations by varying the primary electron current, this being effected by grid control or by control of the cathode heating current. The sudden increase in current when the relay operates temporarily interrupts or decreases the primary electron current to restore the device to its initial, stable condition. The electrons flowing to the electrode 3 may be produced by an electron multiplier ; this is adjusted by detuning means and has a final amplification independent of the initial emission which may be produced by light scattered from the electrode 3. The apparatus may be placed at the focal point of a concave mirror or behind a wide-apertured lens. Specification 333,548, [Class 39 (i)], is referred to.
Patent GB-584226-A (GB)
Title: Improvements in or relating to endless-track vehicles
IPC: B62D55/08
Filed: 1944-12-18
Abstract: 584,226. Endless tracks for vehicles. GARDINER, E. M. N. Dec. 18, 1944, No. 25340. [Class 79 (i)] An endless track comprises a rubber belt.having a fabric or wire reinforcement embedded therein adjacent the inner face, the outer surface being' divided into a number of treads with a hole at the base of each division between the treads, the treads and divisions being such that the track resists going into reverse curvature. The treads may have metal bars embedded therein, either longitudinally and/or transversely. The inner face of the belt is provided with means for engaging the supporting members on the vehicle; such means may comprise continuous projections or grooves, or discontinuous projections such as a series of lugs, which may be of inverted V shape; the lugs may be of hard rubber and may be hollow or have a filling of cheaper material. The lugs are tapered to facilitate their entry into the guiding rollers, the taper being slightly different from that of the corresponding groove in the supporting rollers, to prevent binding. As shown in Fig. 3, the endless rubber track has a canvas insertion 2 and treads 3 separated by divisions 4 each of which terminates in a hole 5. The treads 3 may have reinforcing metal bars 18. Tapered lugs 6 engage grooved rollers 8, one of which is adjustably mounted in .the side plates 15. An intermediate supporting roller 19 may be provided. Each of the grooved rollers 8 may comprise two cup-shaped members 9, Fig. 4, spaced apart so as to receive the lugs 6 of the track, and reinforced, if desired, by members such as 12 or 13. Specifications 106,353, 134,190, 149,503, 164,321, 228,121, 256,796, 278,779, 316,739 [all in Class 79 (i)]. 361,224 and 544,711 are referred to.
Patent GB-237769-A (GB)
Title: Improvements in or relating to display apparatus
IPC: G09F7/04
Filed: 1924-10-24
Abstract: 237,769. Catt, S. G., and Young, S. L. Oct. 24, 1924. Addition to 213,349. Word-building, number-building, and like apparatus. - In the apparatus described in the parent Specification, magnets are used for temporarily attaching the loose pieces to the backing. The magnets i may be on the pieces or on the backing a, and in the latter case may serve as steady pins for other components h. A keeper of plate iorm is provided for the magnets.
Patent GB-1042118-A (GB)
Title: Photo-electric device
IPC: G02F2/00
Filed: 1965-06-16
Abstract: 1,042,118. Cathode-ray tubes. INTERNATIONAL BUSINESS MACHINES CORPORATION. June 16, 1966 [June 29, 1964], No.25377/65. Heading H1D. [Also in Division G4] A photo - electric device comprises a photo-cathode 52 forming part of an electron gun 58, so that photoelectrons may be formed into a beam and deflected over a plurality of semi-conductor diodes 54 to generate signals representative of radiation impinging on the photocathode. The diodes 54 are reverse-biased P-N junction diodes which produce an output signal proportional to the intensity of an impinging electron beam. In the device shown, a serial information input signal, e.g. 8-bit binary characters each preceded by a synchronizing pulse, modulated on a laser beam, produces a modulated electron beam which is swept over a circular array of diodes 54 to provide parallel input signals for a character accumulator register 78 in a computer. A similar photo-electric device, comprising a linear array of semi-conductor diodes may be used for analysing a laser beam, e.g. for studying the rise time of a laser pulse, Figs. 1 and 2 (not shown).
Patent GB-1179188-A (GB)
Title: Improvements in or relating to an Ultrasonic Probe.
Inventor: JACKSON EDMUND LIONEL NEWTON
IPC: G01N29/24
Filed: 1967-06-01
Abstract: 1,179,188. Ultrasonic probes. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 29 Feb., 1968 [1 June, 1967], No. 25396/67. Heading H4J. An ultrasonic probe has two piezo-electric elements 18, 19 arranged to transmit and receive beams 18a, 19a which converge mutually towards a concave surface (5a) of a body under examination. The centre axes of the beams form an acute angle (3 degrees + 3 degrees) between them and intersect the surface (5a) at two respective points E, The axes lie in a plane which is inclined by a second acute angle (37¢ degrees) to a straight line XY (or tangent to a curve) along which a plane of symmetry KXY for the two axes and two points E intersects the surface (5a) of the body under examination. Transmitter 18 (Fig. 2) of BaTiO 3  is in a polymethyl methacrylate head 5 having a cylindrical abutment surface 5a. A backing 20 and clamping screw 21 are provided. Receiver 19 is in a similar head (see Fig. 4, not shown). Heads 5, 6 are held in contact with a tube 1 having a weld 4 to be flaw-tested. The heads 5, 6 are held by a leaf spring 8 and two support studs 9, 10 in screw-threaded engagement with a transducer support 11. A nylon tube 12 supplies couplant such as distilled water to the interior of the tube 1 and a seal 13 around support 11 prevents leakage of couplant from the tube 1. Axial location of the probe relative to the weld 4 is facilitated by a handle 14 and a helical spring 15 between two stop members 16, 17. Energy from transmitter 18 is transmitted at 37¢ degrees to a line XY perpendicular to plane KXY and after refraction at the surface 5a travels through the tube wall at 20 degrees to the line XY. A cross-section ABCD (Fig. 3) is swept by ultrasonic energy. The probe is rotated in the tube 1 to test a circumferential weld. The transducer heads 5, 6 are separated by a laminate consisting of two tin-foil layers (24, 25), Fig. 4 (not shown), and an intermediate cork-rubber layer (26). The laminate prevents acoustic cross-talk and the tin foils provide earth returns from the faces of the elements 18, 19 to a common earth on the support 11.
Patent GB-888131-A (GB)
Title: Coating for medicaments
IPC: A61K9/32
Filed: 1960-07-21
Abstract: Solid, oral medicament forms, e.g. tablets, pills and granules, are protected from the action of moisture and/or oxygen by a water-insoluble, acid-soluble coating of a film-forming polymer selected from poly-2-vinylpyridine, poly-4-vinylpyridine, poly - 2 - methyl - 5 - vinylpyridine, poly - 5 - ethyl - 2 - vinylpyridine and copolymers containing at least 50% by weight of these and a comonomer selected from vinyl acetate, acrylonitrile, methyl acrylate and styrene.  The polymers may be prepared by conventional methods and the coating may be applied by conventional techniques, e.g. pancoating, spraying or dripping, using a solution of the polymer, e.g. in methanol, ethanol, benzene, chloroform or carbon tetrachloride.
Patent GB-1081596-A (GB)
Title: Weatherguards for doors
Inventor: BRADLEY PETER
IPC: E06B7/26
Filed: 1966-06-08
Abstract: 1,081,596. Door weather guards. RUSSELLS RUBBER CO. Ltd. June 8, 1966, No. 25460/66. Heading E1J. A door weather guard 6 of synthetic rubber extends across the bottom of a door 5 and is clamped thereto by a steel clamping member 7 having a flange 17 which extends into a slot in the guard 6, and a lower flange 19. The weather guard has a lip extending along the upper edge, and a rectangular channel-sectioned groove 16 along its lower edge to stop the flow of water up the lower surface of the guard.
Patent GB-839215-A (GB)
Title: Improvements in or relating to power-assisted steering mechanisms
Inventor: HEACOCK FREDERICK HENRY
IPC: B62D5/06
Filed: 1957-08-14
Abstract: 839,215. Vehicle power steering. CLAYTON DEWANDRE CO. Ltd. Aug. 14, 1958 [Aug. 14, 1957], No. 25671/57. Class 79(5) A power assisted steering mechanism has a control valve 6 built into a drag link assembly 19 and actuated by a displaceable member from the pitman or drop arm 32, the displaceable member consisting of a lever 20 or lever assembly pivoted at 22 on the valve housing and having a ball and socket connection 35 with the drop arm and the arrangement being such that an increased displacement of the valve is obtained for a given movement of the drop arm. The drag link assembly also incorporates a power cylinder 2 co-operating with a fixed piston 18 and having its pressure-fluid supply controlled by the valve 6 which is connected by a tongue 26 and a pin 24 to the lever 20. A spring (not shown) biases the valve to neutral position. The drag link assembly 19 includes a ball and socket joint 45 having a spring- loaded wedge 50 to take up play while the ball and socket connection 35 has an extension 37 engaged by a bearing 38 to prevent the drag link assembly pivoting about the ball 35. The bearing may be adjusted in a slideway 39, or alternatively, the slideway or the bearing may be mounted in resilient material to accommodate deviations in the positions of the parts during installation. The lever 20 has an idle movement limited by abutment means to enable the steering to be operated manually in the event of power failure.
Patent GB-800201-A (GB)
Title: Improvements in and relating to methods of preparing aldehyde polycondensates
IPC: C08G12/02
Filed: 1956-08-22
Abstract: Condensation polymers are prepared from aldehydes, e.g formaldehyde or furfural, and compounds such as phenol, cresol, xylenol, urea, aniline or melamine by heating the reactants separately and then bringing them together in an ejector chamber in which at least a part of the reaction takes place. Modifications include: (1) if one of the compounds is solid, it may be dissolved in water or in part of the aldehyde, e.g. formalin; (ii) the catalyst may be fed into the injection separately, or dissolved in one of the reagents; (iii) partial reaction in the injector may be completed in a conventional boiler; (iv) the dehydrated product may be solidified on a cooling belt or by spray drying at about 190 DEG  C.; (v) dehydration may take place at normal or subatmospheric pressures; (vi) if the product remains water-soluble, it need not be dehydrated in which case a condenser may be fitted to the injector; (vii) the reaction itself may take place at normal or superatmospheric pressures.  In examples: (I) phenol is mixed with NaOH and preheated to 60-120 DEG  C. while formalin is preheated to 50-100 DEG  C.; they are mixed in the injector, sprayed into a boiler, dehydrated and mixed with solvent; (II) as (I), but the phenol is heated to just below its boiling-point and the formalin is heated under superatmospheric pressure to 100-180 DEG  C. and the reaction takes place at superatmospheric pressure.
Patent GB-1041916-A (GB)
Title: Improvements in or relating to annular fluid pressure seals
Inventor: BUTLER ARTHUR CYRIL
IPC: F16J15/16
Filed: 1964-06-22
Abstract: 1,041,916. Piston and stuffing-box packing. JAMES WALKER & CO. Ltd. July 6, 1965 [June 22, 1964], No. 25703/64. Headings F2B and F2T. In packing for a piston or stuffing-box and comprising a sealing ring 1 of resilient material. e.g. rubber, and an anti-extrusion ring 9 of less resilient material, e.g. synthetic plastics material, the rings are connected together in a detachable interlocking manner. A tapered ridge 6a on the ring 1 engages an undercut groove 10 in the ring 9 which may be of nylon. The sides 3, 4 of the ring 1 diverge away from the ring 9. In a modification, Fig. 2 (not shown) an anti-extrusion ring 9 is connected to each of the opposite end faces of the sealing ring 1.
Patent GB-280346-A (GB)
Title: Improvements in apparatus for braking tubs or wagons for use in mines and the like
IPC: B61K7/08
Filed: 1926-10-16
Abstract: 280,346. Teale, J. W. Oct. 16, 1926. Arresting-grips or friction apparatus on per. manent way.-Brake apparatus for mine &c. wagons comprises a pivotally mounted bar adapted to be actuated to form a taper with the track to engage the upper part of the wheel rims. As shown in Figs. 1 and 2, the apparatus comprises an angle-bar 1 pivoted at one end 2 on a fixed structure 4 and connected at the other end by a link 6 to a crank 7 the shaft of which is mounted in a bearing 8 and carries an operating- lever 9. A weight 10 on the lever 9 or a spring connected thereto tends to operate the crank to bring the bar 4 into the operative inclined position but is normally prevented from doing so by a detent 11 arranged to engage the lower end of the lever 9. The crank and link assume a deadcentre position when in the lower position. The bearing 8 may be vertically adjusted by a screw 17. In a modification the crank is arranged for operation by a double-acting fluid-pressure actuated piston. In this case the crank and link need not assume a dead-centre position so that the wagons are only retarded. Fluid-pressure actuated apparatus may be arranged at distances apart to retard the wagons which may then be finally brought to rest by the apparatus shown in Figs. 1 and 2. The apparatus may be operated instead by electric power.
Patent GB-811420-A (GB)
Title: Improvements in blade sharpening devices
IPC: B24D15/08
Filed: 1957-08-15
Abstract: 811,420. Sharpening razor blades. HERTEL, C. Aug. 15, 1957 [Aug. 15, 1956], No. 25805/57. Class 60. A device for sharpening razor blades oomprises a hone support 10, Figs. 1 and 3, having side wings 17 on which are resiliently mounted a pair of hones 14, the wings being separated by a channel 15 in which the ribs 34 of a blade carrier 11 are alternately reciprocated, the blade being clamped between hinged members 22 on the carrier. The support 10 which may be of plastic reinforced by webs 21 or of metal, is provided with flanges 18 on the wings 17 for locating the hones 14. The hones may be of glass, stone, metal or leather treated to provide a fine abrasive surface, and may each be bonded to a strip of rubber which is itself bonded to one of the wings. The members 22 of the carrier 11 are, as shown in Fig. 4, connected by a hinge 26 and pins 27 in one member correspond with apertures in the other for locating the blade therebetween. A spring-clip locking arrangement 30, 31 is provided for maintaining the two members 22 closed during the sharpening operation and a lug 32 may be formed on one or both members to facilitate their release.