baber/WOPTO huggingface dataset:
Patent GB-961576-A (GB)
Title: Process for the preparation of aromatic compounds containing deuterium, tritium or the carbon isotope c
IPC: E02F9/02
Filed: 1961-11-13
Abstract: Aromatic hydrocarbons containing one or more of the isotopes deuterium, tritium and C14, are obtained by cyclization of an acetylene containing the requisite isotope in the presence of a halogen-containing compound of niobium, tantalum or tungsten.  The acetylene may contain alkyl, alkenyl, aryl or cycloalkyl groups which may contain deuterium, tritium or C14, e.g. to produce labelled benzene, toluene, xylene,cumene,pseudocumene,styrene,divinylbenzene trivinyl . benzene and hexavinylbenzene. The catalyst may be NbCl5, NbOCl3, NbBr5, NbF5, TaCl5, TaBr5, TaF5, WCl6, WOCl4, mixtures thereof, or, particularly, addition compounds with halides of alkali or alkaline-earth metals, with phosphorus chlorides or oxychlorides or with amines or ammonia. Reaction is effected in the gaseous phase by passing over a solid catalyst which may be supported or in the liquid phase by absorbing the acetylene in a solution or suspension of the catalyst in an inert hydrocarbon, preferably of different boiling point from the product.  A diene, e.g. isoprene, may be added as a reaction initiator where a saturated hydrocarbon solvent is used.  Reaction is effected at - 30 DEG  to 250 DEG  C. and 100-200 mm. Hg.  Acetylene containing deuterium, tritium, or C14 is obtained by the action of deuterium or tritium water or barium or calcium carbide or by the action of water on barium carbide (C14).
Patent GB-1082779-A (GB)
Title: Insulation foundation for low temperature and cryogenic storage tanks
IPC: F17C13/08
Filed: 1965-09-23
Abstract: 1,082,779. Liquefied gas storage containers. CHICAGO BRIDGE & IRON CO. Sept. 23, 1965 [Dec. 22, 1964], No. 40690/65. Heading F4P. The flat bottom 11 of a stainless steel or aluminium liquid methane storage tank 10 rests on concrete or wooden covers 23 of a plurality of hollow concrete pillars 20 standing on a concrete levelling pad 18 on an earth foundation 19, and the interior of each pillar and the spaces between are filled with loose heat insulation material, e.g. perlite; the assembly being surrounded by an outer shell 14 with an intervening perlite space 14. The side 12 of tank 10 is tied by bolts 28 embedded in a concrete ring wall 29, and warm air or water pipes 32 within the foundation 19 prevents freezing thereof.
Patent GB-895811-A (GB)
Title: Improvements relating to thermoplastic resins
Inventor: SKINNER STANLEY JOHN
IPC: B29C48/06
Filed: 1959-12-01
Abstract: 895,811. Improved surface finish for thermoplastic resins. MONSANTO CHEMICALS Ltd. Nov. 11, 1960 [Dec. 1, 1959], No. 40719/59. Class 87(2). A sheet, tube or other section is given a high surface gloss by extruding a softened thermoplastic synthetic resin, e.g. a toughened polystyrene, polyethylene, or toughened polyvinyl chloride through a narrow restriction 23 situated adjacent to the die lips 18, 19, the restriction being positioned centrally in the die and having a cross-section essentially of the same geometrical type as that of the final extruded section, and being such that it generates a high back pressure of at least 900 pounds per square inch. The restriction is formed by a cut-away portion of a gasket 13 between the parts 11, 12 of the die. The distance apart of the die lips 18, 19 can be adjusted by screws 20, 21.
Patent GB-1039389-A (GB)
Title: Timing mechanism for operating electrical circuits
Inventor: ALLPORT MAURICE JAMES
IPC: H01H23/16
Filed: 1963-10-16
Abstract: 1,039,389. Electrically released switches; retractive switches. JOSEPH LUCUS (INDUSTRIES) Ltd. Sept. 30, 1964 [Oct. 16, 1963; March 3, 1964], Nos. 40755/63 and 8877/64. Heading H2B. A switch for closing a circuit for a predetermined time comprises an operating member 16 movable against a spring bias 20 to close contacts 21, 26 when it is latched by the end of a bi-metal 22 which is heated by a coil 24 energized by closing the contacts so as to release the member 16 after the predetermined time. In a modification (Fig. 3, not shown), the push-button 16 is depressable against a light spring to close the contacts 21, 26 and must be depressed further against a relatively strong spring to engage the latch 23. Furthermore, the latched portion 17 of the push-button is formed as a bridging contact which connects the heater coil to the moving contact 21 in the latched condition. In a second embodiment (Fig. 5) a pivoted, spring-biased dolly 45 moves a blade contact 54 into engagement with fixed contact 41 and is there latched by a member 50 attached to or integral with the bi-metal 48; the contacts can be opened at any time by moving the dolly to the open position.
Patent GB-960390-A (GB)
Title: Push-button control mechanism and illuminated indication therefor
Inventor: CHIPPERFIELD VICTOR JAMES
IPC: H01H13/02
Filed: 1959-12-03
Abstract: 960,390. Switches held set and freed mechanically; indicators for switches. ULTRA ELECTRONICS Ltd. Dec. 2, 1960 [Dec. 3, 1959], No. 41085/59. Heading H2B. A light-transmitting push button 21 projects from a light-transmitting panel 12 on which switch body 11 is mounted by means not shown. A metal sleeve 25 has a chamfered edge (Fig. 4) such that light from panel 12 is reflected into the button 21 and diffused from annular grooves 30 when the button is in the depressed condition. In this condition switch contacts 27 are operated by a projection 26, as shown in Fig. 4. In the unoperated condition (Fig. 1) the sleeve 25 prevents light from panel 12 entering the button 21. The switch is latched and unlatched by successive depressions of button 21 which cause a spring-loaded pin 16 to cooperate with a sliding cam plate 19. Plate 19 is urged to the right (Fig. 1) by spring 20 but when button 21 is depressed the pin 16 rides down surface 22 forcing plate 19 to the left until the pin seats in recess 23 retaining the button depressed against the action of a spring 14. When the button is then further depressed the pin 16 allows the plate 19 to restore and a bent tongue 24 rides above pin 16 which is depressed thereby as spring 14 reasserts and the mechanism reverts to the condition shown in Fig. 1.
Patent GB-1277283-A (GB)
Title: Improved briquetting press
Inventor: METRAILER WILLIAM JOSEPH
IPC: B22F3/18
Filed: 1969-08-18
Abstract: 1277283 Roller press ESSO RESEARCH & ENG CO 18 Aug 1969 [3 Sept 1968] 41170/69 Heading B5A Overlapping D-shaped briquettes of compressed particulate metal are made by feeding into the nip of a pair of rolls, Fig. 3, each provided with a series of spaced apart mould pockets the series of one roll partially overlapping the series of the other by from 1-20%. The segments containing the mould pockets are provided in the circumferential surface of the rolls and may be replaced when worn without changing the whole roll. The edges of the mould segments may have raised surfaces or protrusions 23, 24, Fig. 4, which extend into the pockets yielding briquettes of concave crosssection.
Patent GB-952428-A (GB)
Title: Method of manufacturing metal cages for needle bearings
Inventor: GIACOMO EINAUDI
IPC: B21D53/12
Filed: 1962-10-31
Abstract: 952,428. Making needle bearings; forging. RIV OFFICINE DI VILLAR PEROSA S.p.A. Oct. 31, 1962 [Nov. 7, 1961], No. 41222/62. Headings B3A and B3H. [Also in Division F2] In a metal cage 20 for a needle bearing wherein the needle rollers 25 are guided parallel to each other by end sections 33 of the cage bars 23 and are held radially captive by intermediate sections 27 and by ridges 30 with overhanging edges 51, the latter are upset by pressing the ridges in the axial direction of the cage. This has a cylindrical base and a stepped exterior turned on a lathe by a profile cutter 26, Fig. 1 (not shown). The windows 34 are then punched out and the cage is mounted on a mandrel 50, Fig. 11, where pressure is applied axially to the ridges 30 by radially acting tool 40 having grooves 42, 43. The latter preferably have concavely curved sides 47, 48, Fig. 5 (not shown). In another embodiment, Figs. 3, 4 (not shown), a pair of oppositely acting tools apply axial pressure to each ridge.
Patent GB-937079-A (GB)
Title: Improvements in or relating to conveyors
Inventor: ESTABROOKS ROGER STANLEY
IPC: A21B3/07
Filed: 1961-11-17
Abstract: 937,079. Endless conveyers. J. W. GREER CO. Nov. 17, 1961, No. 41310/61. Class 78 (1). A conveyer in a baking oven A has endless chains 20, 22 and comprises a series of tray holders, each consisting of a pair of spaced plates 42, 44, connected by a rod 46 rigidly supporting a fork 48. During travel around sprockets 24, 30 the tray holders are maintained horizontal by an idler roller 56 on plate 44, which engages a cam 58 mounted on the frame of the machine. An idler roller 52 on plate 42 engages a similar cam at the other end of the machine on the near side. An endless chain 40 maintains sprockets 24, 30, which are in offset relation, in uniform rotation. The upper runs of the chains 20, 22 are supported on horizontal rails 60, 62, and the lower runs are initially supported by rails 64, 66. The rails bend downwardly at 68, 70 and level off at 71, 72. Chain-retaining rails 73, 74 are provided above the bends. Unloading.-Chain-supporting rails 76 have an offset rail 78 extending upwardly above the level of endless chains 79 which are driven at a speed substantially greater than the speed of the endless chains 20, 22. As the tray holders descend from the level of the rails 64, 66 to the level of the rail portions 71, 72, the fork 48 passes below the level of the stationary grid formed by the rails 78 thus depositing a pan P on to the grid. The pan remains on the grid until lugs 83 or 84 of chains 79 move the pan on to these chains whence it may be transferred to another conveyer. This operation is so timed that after the pan has been deposited on the grid the pan will be moved off the grid before the fork 48 rises back upwardly through the grid. Loading.-After passing upwardly through the grid, the fork 48 passes upwardly between input chain conveyers 90 running over rails 91. Pans to be loaded are carried by the conveyers 90 against stops 93 provided on extension pieces 92 of the rails. The pans remain on the conveyers 90 until picked up by rising forks 48. U.S.A. Specification, 2847,132 is referred to.
Patent GB-1454040-A (GB)
Title: Device for broadcasting the vapour of a volatile liquid
IPC: A61L9/12
Filed: 1974-09-23
Abstract: 1454040 Liquid evaporators T W KEET 23 Sept 1974 [5 Oct 1973] 41377/74 Heading A5G A device for broadcasting vapour (e.g. of perfume, insecticide or bacteriostat) comprises an airtight reservoir 12 for liquid, a liquid outlet 38 from the reservoir below the surface level of liquid when in the reservoir, a pad 14 of liquidabsorbent material (e.g. pressed felt) attached to the reservoir over the outlet 38 to be in direct contact with liquid in the reservoir so that in use liquid is absorbed directly into the pad through the outlet 38 under the influence of both gravity and the capillary action of the material of the pad, both the density of the material of the pad 14 and the size of the outlet 38 being so selected that the rate of liquid evaporation from the pad when substantially saturated is equal to the liquid absorption rate of the pad. In the apparatus shown, the reservoir 12 and pad 14 are contained within a housing 10 provided with louvres 20, 22. A motor-driven fan 18 is also located within the housing. Pad 14 is situated inside a container 32 with perforated sidewalls 37 and with a large opening 36 in its base 34.
Patent GB-1186054-A (GB)
Title: Illuminated Display Device
IPC: A63F9/10
Filed: 1967-09-12
Abstract: 1,186,054. Toy illuminated signs. M. I. GLASS [trading as MARVIN GLASS & ASSOCIATES]. 12 Sept., 1967 [25 Nov., 1966], No. 41588/67. Heading A6S. [Also in Division G5] The front panel of a housing 10 enclosing a light source 14 includes a frangible opaque sheet 16 (e.g. of black paper) through which a plurality of translucent pegs 18 may be inserted to form in combination an illuminated legend or design. As described, sheet 16 is sandwiched between removable panels 34, 36 having a regular array of aligned perforations 38. In use, a child inserts the pegs 18 according to a pattern of marker dots (40, Fig. 5, not shown) on sheet 16 which delineate e.g. a horse. The pegs and dots may be correspondingly coloured.
Patent GB-1506592-A (GB)
Title: Signalling system
IPC: H04N7/173
Filed: 1975-02-10
Abstract: 1506592 Selective signalling G E HOLZ 10 Feb 1975 [11 March 1974] 41723/77 Divided out of 1506591 Heading G4H A signalling system includes a TV receiver and circuit means coupled to the TV receiver and sensing the horizontal sync. signals when and only when the receiver is operating and generating information signals using the horizontal sync. signals. The disclosure is included in the parent Specification.
Patent GB-1096798-A (GB)
Title: Improved line follower
Inventor: DIPROSE KENNETH VICTOR
IPC: B23K7/00
Filed: 1965-10-01
Abstract: 1, 096, 798. Photo-electric line followers. HANCOCK & CO. (ENGINEERS) Ltd. Sept. 20, 1966 [Oct. 1, 1965], No. 41784/65. Heading G1A. In a line follower which uses a circular scan and in which a square wave signal is produced phase locked to one of the crossing points of the line and the scanning path, means are provided to generate from the square wave two waveforms of twice the scanning frequency, the mean D. C. level of which depends upon the angle of the line relative to perpendicular co-ordinates and used to drive co-ordinate motors. The scanning movement may be produced by the light-source or the detector. In either case the crossing points 17, 18, Fig. 1 of the scanning ring 15 and the line 11 subtend about 90‹ at the centre of ring 15. The detector output pulses trigger a monostable circuit which remains set for a scan revolution and therefore locks on to the crossing point 17. The square wave output from the monostable circuit is applied to a common line 31 which is connected through photo-transistors 20-27 and associated to resistors to quadrant buses 33, 37, 47, 48. Opposite quadrant buses are connected to the inputs of X and Y differential amplifiers 66, 63. During scanning, the photo-transistors are obscured by a shutter 28 and the resistors 32, 34 &c. are chosen so that if a steady D. C. were applied to line 31 approximately sinusoidal signals would be applied to the inputs of amplifiers 63, 66. In fact, the square wave applied to 31 changes the sign of the sinusoidal signals once per cycle at a phase position dependant upon the angle between the line 11 and the co-ordinate axes, to produce signals at twice the scanning frequency. The mean D. C. levels of these signals are proportional to the resolved components of the line direction along the coordinate axis and are used to energize co-ordinate motors and drive the scanning head in this direction.
Patent GB-1498236-A (GB)
Title: Process for the firing and sintering of material in pieces and shaft furnace for the performance of the process
IPC: C04B2/12
Filed: 1975-10-13
Abstract: 1498236 Charging shaft furnaces K BECKENBACH 13 Oct 1975 [15 Oct 1974 13 May 1975 20 Sept 1975] 41900/75 Heading F4B Material such as chalk, dolomite, magnesite or cement is fired and sintered in a gas or oilfired shaft furnace being fed, as a mass of pieces of various sizes, from a top charging zone, to pass successively through an entry zone 12, a preheating zone 14, a firing zone 16, having burners in radial chambers 26, and a cooling zone 18, the coarser grains of material moving through the furnace in the centre, the finer grains moving adjacent the furnace wall, the material being sorted according to grain size as it is charged by being formed with a conical sloping surface so that the larger grains roll down into a central depression and are thereby gathered in the middle. The furnace is charged over a bell 30 which throws the material against the furnace wall so that it forms a central pit 34. Vertically aligned with the four burner-chambers 26 are projections 32, Fig. 2, which as the material flows over them form radial gulleys beneath, into which the larger grains also roll so that they are concentrated in four radial zones as well as in the centre, Fig. 4. This allows the hot gases from the burners to penetrate the mass of material, and a central hollow cylinder 36, Fig. 12 may be suspended beneath the bell to help draw off the gases by chimney action. To prevent the charge jamming, the shaft widens conically downwards. In the form of Fig. 7 downwardly sloping grids of bars 33 are provided between the projections 32, to sort out and move towards the centre any larger grains not already in the centre. In the form of Fig. 12 the bell 30 guides the material on to a conical insert 50 which spreads it round the periphery of the charging zone. The insert 52 has openings 38 which allow mixed material to fall directly into the central region with little or no separation of the larger pieces. The openings 38 may be controlled by a shutter ring 40 which is rotated to close the openings and reduce the amount of material passing through them.
Patent GB-1055604-A (GB)
Title: Cathode ray tube fabrication
IPC: H01J9/24
Filed: 1965-10-04
Abstract: 1,055,604. Colour television tubes. SYLVANIA ELECTRIC PRODUCTS Inc. Oct. 4, 1965 [Oct. 2, 1964], No. 42048/65. Heading H1D. In manufacture of a colour cathode-ray tube employing an aperture mask adjacent to, and aligned with a multi-colour phosphor screen, the tube faceplate is pre-shrunk by heating at a temperature and for a time at least as great as any time-temperature combination encountered by the faceplate during subsequent tube processing, to achieve at least 90% finalization of the lateral dimensions of the faceplate before application of the phosphor screen thereon. If the faceplate is to be frit-sealed to the funnel portion of the envelope by heating at 445‹ C. for 1 hour, the faceplate is preferably preheated at 445‹ C. for 2 hours before forming the phosphor dot screen by exposure through the mask.
Patent GB-1062718-A (GB)
Title: Improvements in or relating to colour image display apparatus
IPC: H04N5/58
Filed: 1964-10-16
Abstract: 1,062,718. Colour television. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Oct. 16, 1964 [Oct. 18, 1963], No. 42286/64. Heading H4F. The " white " point of the light produced by a cathode-ray tube 1 is varied in accordance with the colour of the ambient illumination by applying the colour signals to the tube via coupling circuits which include photo-sensitive resistors 8, 8<SP>1</SP>, 8<SP>11</SP> which are exposed to the ambient illumination through red, green and blue filters respectively. The photo-sensitive resistors are arranged to form potentiometer networks with resistors 9, 9<SP>1</SP>, 9<SP>11</SP> connected between the anodes of amplifiers 6, 6<SP>1</SP>, 6<SP>11</SP> and further fixed potentiometers networks 10, 11; 10<SP>1</SP> ,  11<SP>1</SP>; 10<SP>11</SP> ,  11<SP>11</SP>. These further networks establish potentials equal to the anode potentials for " black " whereby the photo-sensitive resistors vary the amplitudes of the colour signals without altering the image black level. Since only relative signal levels are of significance in determining colour, the signal in one colour channel need not be varied. A second arrangement (Fig. 2, not shown), is for use where luminance signals Y of different amplitudes are applied to the tube cathodes and colourdifference signals R-Y, B-Y and G-Y are applied to respective grids. Two photo-sensitive resistors are provided which are connected between the grid and cathode circuits of the green and blue guns. The resistors act as variable loads on the luminance and colourdifference signal sources causing simultaneous variation of the amplitudes of both signals. The resistors are associated with colour filters which are blue and green where they are of the type where the resistance values increase in magnitude with intensity of illumination and the complementary colours where they are of the type where the resistance values decrease in magnitude. In a third arrangement, Fig. 3 (not shown), the colour-difference signals are not varied in amplitude, and the photo-sensitive resistors are employed to control only the luminance signals. A further photo-sensitive resistor, which is exposed to the total ambient illumination preferably without a filter, is used in a gain-control circuit to vary overall signal amplitude, i.e. both luminance and colour components, so as to vary the reproduced image contrast with the luminance of the ambient illumination. The arrangement employs D.C. coupling for the luminance signal. Undesired variation of the signal D.C. component may be avoided by A.C. coupling and clamp circuits. Reference has been directed by the Comptroller to Specification 958,588.
Patent GB-1066247-A (GB)
Title: A hammer device
Inventor: RANISZEWSKI JOZEF
IPC: E02D7/18
Filed: 1963-10-28
Abstract: 1,066,247. Percussive tools. ZAKLADY SPRZETU BUDOWLANEGO NR. 2. Oct. 28, 1963. No. 42341/63. Heading B4C. A vibratory-hammer for driving members 9, such as piles, has a vertical and rotary action and comprises two shafts 3, 4 mounted on a support housing 8, and provided with gears 12, 13 and discs 14, 15, the gears and discs being fitted with weights 1 so that, upon rotation of the shafts in opposite directions, they exert a vibratory turning moment on the support housing thereby rotating it and at the same time, causing a percussive member 16 to strike an anvil portion of the housing. The percussive member 16 is connected to the housing 8 by means of springs 18 and nuts 20 are provided in order to adjust a clearance 19 between the permissive member and an anvil portion formed on the housing 8. As shown, the weights 1 are secured to the gear 12 and disc 15 so that when the shaft 3 is rotated by means of an electric motor or internal combustion engine via a flexible drive, the weights cause the housing to vibrate vertically and also rotate, these motions being transmitted to the member 9 connected to the housing. The weights may alternatively be fitted to the gear 13 and disc 14.
Patent GB-1425252-A (GB)
Title: Fuel assembly for a nuclear reactor
IPC: G21C3/356
Filed: 1973-09-10
Abstract: 1425252 Fuel elements WESTINGHOUSE ELECTRIC CORP 10 Sept 1973 [26 Sept 1972] 42418/73 Heading G6C A nuclear fuel assembly comprises an array of fuel rods (18) and, if desired, also control rod guide thimbles (20) (Fig. 1, not shown) and at least one spacer grid, Figs. 2 and 3, comprising multiple straps 28, 29 interwoven with each other to form openings for the reception of the fuel rods and guide thimbles, with springs 32 formed integral with the straps projecting from two adjacent straps into each opening to contact a fuel rod or guide thimble and projections 34 formed integral with the straps projecting from the other two adjacent straps into each opening, to contact the remaining sides of the fuel rod or guide thimble. To minimize distortion in the coolant flow as the coolant moves upwardly through the grid, the leading edge 42 is serrated or made to a scallop-like design by stamping out sections and leaving trapezoidalshaped slots 44 which facilitate the flow of coolant into the grid. Slots 46 are also cut in the trailing edge of the grid. These slots 44, 46 create open channels around the projections 34 which help avoid buildup of boundary layers which would lower the heat transfer. The projections 34 are oriented in pairs in the direction of coolant flow and spaced from the strap walls to provide a substantially uninterrupted flow path. When the straps 28, 29 are interleaved through slots 30 and subsequently welded or brazed along their abutting edges, projections 31, 33 formed on the straps engage adjacent strap sides and firmly hold them in position. In a modified version of the grid (Fig. 8, not shown), the springs are positioned at an angle of 90 degrees from the position shown in Fig. 2 to reduce the flow impedance. The projections are however of the same design and number.