baber/WOPTO huggingface dataset:
Patent GB-1300920-A (GB)
Title: Frequency stabilized solid state microwave oscillator
IPC: H03B9/14
Filed: 1970-11-04
Abstract: 1300920 Solid state oscillators MITSUBISHI DENKI KK 4 Nov 1970 [4 Nov 1969 10 Sept 1970] 52530/70 Heading H1K [Also in Division H3] A frequency stabilized solid state microwave oscillator comprises a semi-conductor microwave oscillation element 54 disposed within a resonant cavity 12 and a capacitive element 66 having a negative temperature coefficient of capacitance disposed to interact with an electromagnetic wave produced in the resonant cavity so as to vary the capacitance of the cavity on variation in temperature to compensate oscillator frequency changes due to temperature variations. The change in capacitance of the element 66 with temperature offsets the change in equivalent inductance of the oscillation element 54 so as to stabilize the frequency of the oscillator. The capacitive element may be in the form of a strip 66 attached to a cylinder 58 of ceramic insulation in which the oscillating element 54 is hermetically disposed. The oscillating element 54 may be a Gunn-effect diode of GaAs or an IMPATT avalanche diode mounted on a copper electrode 52 and connected by two fold wires 60 to a further electrode 56 which may be of Kovar (Registered Trade Mark) or Invar (Registered Trade Mark). The capacitive element 66 may be of ceramic material such as titanium oxide and/or magnesium titanate porcelain. In a modification (Fig. 6, not shown) the capacitive element 66 is disposed within the cavity 12 at the same position as a variable capacitance diode previously used for varactor tuning. Alternatively the element 66 may be disposed on a portion of the cavity such as a wall. In a further modification (Fig. 7, not shown) the capacitive element 66 forms at least a part of the enclosure 11 for the oscillation diode 54 so that the temperature compensation is accomplished by the diode enclosure 11 above.
Patent GB-1185860-A (GB)
Title: A Method of Manufacturing Packages in which the Contents are contained in Thermoplastics Material Bags, and Packages Obtained thereby
IPC: B65B9/08
Filed: 1967-11-22
Abstract: 1,185,860. Block-bottom bags; multicompartment packages. CENTRA ANSTALT. 22 Nov., 1967 [26 Nov., 1966], No. 53041/67. Headings B8C and B8K. [Also in Division B5] A gussetted tube is welded and parted transversely to form bags with at least one side gusset, with an open mouth X-Y with spotwelds 4, 5 securing the gussets near the mouth, and with further welds 8, 9, 10 joining opposite sides of one of the gussets. After filling the mouth X-Y is sealed and the bag is turned so that the welds 8, 9, 10 are at the top, the opposite gusset opening to form a block bottom. The weld A-B may have a further weld adjacent and parallel to it to form a pocket (11) (Figs. 6 and 7, not shown) to receive a plastic "straw" with a pointed end. The gussetted tube may be built up by welding from superimposed strips.
Patent GB-1259937-A (GB)
Title: Improvements in or relating to winches
Inventor: PURDY WILLIAM CHARLES
IPC: B66D1/02
Filed: 1970-11-11
Abstract: 1,259,937. Winches. THOMPSON BROS. (ENGS.) Ltd. 11 Nov., 1970, No. 53696/70. Addition to 1,144,819. Heading B8B. [Also in Division F2] A winch includes a winding bollard 8 driven from an I.C. engine 3 via a torque sensitive coupling 4, a variable speed reverse gear 5 and a reduction unit 7, and a reeling drum 15 driven from a pulley 9 on the bollard drive shaft via the drive mechanism 12 of parent Specification including a one-way clutch connecting the driving pulley 11 to the drum driving shaft 13 which is also connected to a permanently applied brake 14 through an oppositely acting one-way device to provide a back tension for unreeling under power. To facilitate unreeling by hand, the drum 15 may be disconnected from its shaft by releasing a spring loaded pin 18. Similarly, release of a spring loaded plate (not shown), disconnects the bollard 8 from its drive shaft.
Patent GB-1366690-A (GB)
Title: Elongate electrical heating apparatus
IPC: F24H1/10
Filed: 1971-11-19
Abstract: 1366690 Skin effect resistance heating element CHISSO CORP 19 Nov 1971 [20 Nov 1970] 53807/71 Heading H5H [Also in Division H2] Elongate A.C. heating apparatus suitable for heating pipelines comprising a source and an element, preferably a ferrous tube for carrying "skin-effect" current, is adapted so that the voltage at any point in the apparatus is of a value sufficiently low so that insulating problems of the conductors employed in the high temperature environment are obviated. As shown the tube is divided into sections 10-13 and together with associated conductors 14-17 form closed loops which are arranged in a line and coupled together via transformers 18-21. If the maximum allowed voltage in any section is V then the output at each secondary is adapted to be V and the currents 22-25 are arranged to have the values i, 2i, 3i, 4i respectively, the voltage drops in the sections being V, V/ 2 , V/ 3 , V/ 4  so that the same power V-i is dissipated in each, and each transformer has a power output equal to the total load in all the sections further from the source than itself. The resistance of the pipe sections 10-13 are adapted to these values by ranging the physical properties of the pipes, or a shunt conductor is employed across the pipe length which may comprise a metallic sheath placed over the insulation of a conductor running through the centre of the pipe to connect with the far end thereof or may comprise a metal filling of the pipe, e.g. with sodium or similar low melting point metal which may be introduced in a liquid state without damage to the insulation of the conductor.
Patent GB-1119621-A (GB)
Title: Radioactive materials handling and transport system
Inventor: BAUDIFFIER GUY
IPC: G21C19/24
Filed: 1965-12-21
Abstract: 1,119,621. Fuelling reactors. EUROPEAN ATOMIC ENERGY COMMUNITY. 21 Dec., 1965 [22 Dec., 1964], No. 54161/65. Heading G6C. [Also in Division B4] A lead castle for transporting radio-active material, e.g. a fuel element, between a reactor channel and a hot cell comprises a hollow main body 2, 3 having the opening at its lower end closable by two blocks 5, 6 slidable on the castle base-plate 8. The castle is shown positioned over the opening 10 in the roof 11 of a hot cell 9. A charging device 7 for transferring radioactive material to or from the castle cavity comprises a vertically movable rod 14 connected to a casing 22 receiving the grab of an electric hoist (not shown), an extension 23 of the casing receiving the material engaged by the grab. An alpha enclosure 16 comprising a sleeve 20 and lower box 21 has an internal collar 29 whereby it is supported by the casing 22, a bellows 19 being connected between a head 25 of the casing and a flange 27 of the sleeve 20, In use, the charging device 7 and alpha enclosure 16 are lowered together by rotating a hand wheel 65 (Fig. 3, not shown) driving a pinion 69 engaging a rack 64 on the rod 14, the components moving from the chain-line position in Fig. 1 to the position shown in which a cover 17 of the box 21 hermetically engages a cover 12 of the hot cell 9. The final part of this downward movement is performed by rotating a drive nut 34 engaging an external screw thread on the upper end of the sleeve 20, this nut being driven by a pinion 38 through a shaft 39 and hand wheel 40. After removal of the covers 12, 17 conjointly into the box 21 by a two-stage upward and pivoting movement by mechanism 41 described with reference to Figs. 16-18 (not shown) driven by a shaft 43 and hand wheel 46, the charging device 7 may be moved further downwardly by the rack 64, independently of the enclosure 16, into the hot cell (or reactor), the bellows 19 permitting this relative movement. When uncoupling the castle from the hot cell operation of the hand wheel 40 enables the enclosure 16 to be moved upwards independently of the charge device 7 to break the seal between the closed covers 12, 17. Various mechanical interlocks are provided to ensure a correct sequence of the operations.
Patent GB-1481448-A (GB)
Title: Sleeping bags
IPC: A47G9/08
Filed: 1974-12-17
Abstract: 1481448 Sleeping bag GENERAL SPORTS Mfg Ltd 17 Dec 1974 54491/74 Heading A4G A sleeping bag 1 comprises a first panel 2, a second panel 3 substantially over-lying the panel 2 and joined to the panel 2 along part of the edges thereof, e.g. by stitching 10, and connecting means, e.g. a zip fastener, on or adjacent the side edges 11, 12 of the panels so that the side edges may be joined to one another by the connecting means in a manner such that the panel 2 forms an inner member positioned within an outer member formed by the panel 3. The effect is such that the double sleeping bag shown is transformed into one for one person. Each panel 2, 3 may comprise an insulating layer 5 or 8, and/or cover layers 4, 6 and 7, 9. The layer 4 may be of waterproof nylon. The top of the bag may be closed by draw-strings.
Patent GB-1095639-A (GB)
Title: Improvements in or relating to telecommunication cables
Inventor: DODD GEORGE ALEXANDER
IPC: H01B7/285
Filed: 1965-12-23
Abstract: 1,095,639. Telecommunication cables. BRITISH INSULATED CALLENDER'S CABLES Ltd. Sept. 20, 1966 [Dec. 23, 1965], No. 54640/65. Addition to 995,582. Heading H1A. In the cable of the parent Specification which has a plurality of conductors, each with a cellular plastics dielectric, enclosed in a waterproof sheath and having the interstices between these insulated conductors filled from end to end with a water-impermeable medium, the conductors are made of aluminium or aluminium alloy. The permittivities of the cellular dielectric and water-impermeable medium may be so chosen that the effective permittivity between conductors of any pair is approximately the same as that in a cable without the cellular material but otherwise of the same form.
Patent GB-1410218-A (GB)
Title: Method and apparatus for minitoring well pumping units
IPC: E21B47/00
Filed: 1972-11-29
Abstract: 1410218 Monitoring pumping electrically MOBIL OIL CORP 29 Nov 1972 ] 28 Dec 1971] 55135/72 Heading G1N Apparatus for monitoring the operation of a pumping unit having a reciprocating sucker string rod, and operating to pump up fluid from a well, comprises a transducer generating a signal representative of the load on the rod string, means for differentiating said signal, and means responsive to said differentiated signal to provide a warning signal. The transducer 40 which may be disposed in the rod string or on an associated walking beam produces a signal which is amplified at 45 giving a signal a. This signal is applied to three sections 42a, 42b, 42c. In section 42a the load signal is differentiated at 46. High peaks on the differentiated signal b indicate "fluid pounding" where pumping is faster than the seepage rate. An amplitude discriminator 47 produces a pulse each time a differentiated signal peak exceeds a pre-set value 54. These pulses have a width dependent on the amount by which the value 54 is exceeded. The pulses are fed to an integrator 48 whose output doperates a trip unit 50 at a specified value 55, to apply a control signal to a "pump off" relay in a control unit 44. If fluid pounding ceases before the trip level is reached the integrator will begin to discharge and the output will return to its former level. The output a may be clipped before differentiation to avoid false operation of the warning arrangement. Section 42b provides normal maximum load determination. The load signal a is fed to an amplitude discriminator 56 set at a value slightly below the normal maximum amplitude of the signal, thus producing one pulse per cycle of operation. The output is fed to a timing circuit comprising an integrator 58 followed by a trip unit 60, which responds if a pulse signal fails to arrive indicating a low load signal. The output of the trip 60 is applied to a malfunction relay 62 in the control unit 44. Section 42(c) comprises two amplitude discriminators 65, 66, which respond to very high and very low load amplitudes respectively. Load signals outside these amplitudes generate signals to the relay 62. In the unit 44, actuation of relay 52 due to fluid pounding activates a shut-down relay 68, energizes an alarm circuit 70, shuts down a running-time totalizer 72, and activates a shut-down timer 74 which runs for a time for fluid to accumulate before it times out and actuates a relay 76 to reset relay 52. The malfunction relay 62 actuates the shut-down relay 68, and an alarm 80, and may be manually reset by trip 62. Actuation of trip 50 in section 42a disables section 42b by means of relay 84. A circuit arrangement for Fig. 2 is disclosed (Fig. 5 not shown). Alternatively computer analysis and control is envisaged.
Patent GB-1203220-A (GB)
Title: Nuclear reactors
Inventor: LONG EVERETT
IPC: G21C13/02
Filed: 1966-12-09
Abstract: 1,203,220. Reactors. ENGLISH ELECTRIC CO. Ltd. 6 Dec., 1967 [9 Dec., 1966], No. 55228/66. Heading G6C. In a gas cooled nuclear reactor, the standpipes which provide access to the core through the prestressed concrete pressure vessel, are formed with double walls to permit the flow of coolant water in the annular space between the walls. The standpipe is formed of walls 11, 12 penetrating the concrete 10. Water is directed into and from the annular spacer 16 by pipes 17 along flow paths presented by the boss 14, 15. Additional water may be supplied through pipe 24 during re-fuelling. A stainless steel liner 23 is fixed at its lower end to the tube 13 and is permitted thermal expansion upwards.
Patent GB-1381420-A (GB)
Title: Magneto-resistive magnetic bubble domain sensor
IPC: G01R33/09
Filed: 1973-11-29
Abstract: 1381420 Magnetic storage arrangements INTERNATIONAL BUSINESS MACHINES CORP 29 Nov 1973 [29 Dec 1972] 55355/73 Heading H3B  The propagation of magnetic bubbles 52, 54, 56, Fig. 1, through a string of idler positions 32, 34, 36 is detected by magneto resistive elements 38, 40, 42, 44 each located between a different pair of idler positions and connected in series, the bubbles being normally rotated about fixed idler paths by an in-plane rotating magnetic field H A , and coupling with the magneto resistive elements only when mutually displaced by one idler position by the introduction of a further bubble at an end of the string. The rotational idler paths and propagation paths between idler positions are defined by permalloy T and I bar overlays 12-18 and 20-30, while the magneto resistive elements are serially connected by a magnetic strip conductor 46, 48, 50 and may themselves be formed of permalloy. In an application to reading out of a shift register, Fig. 2 (not shown), the presence of a bubble in a readout position of the register causes mutual displacement by one position of all the domains in the idler positions, the bubble vacancy caused by idler domain displacement being filled by a bubble generator and the bubble displaced out of the series being eliminated by a bubble imploder. To improve the signal to noise ratio the magneto-resistive elements may comprise two arms of a bridge circuit, Fig. 3 (not shown), the remaining bridge arms being formed by inactive elements.
Patent GB-1498020-A (GB)
Title: Pulsed spray of fluids
IPC: B05B12/06
Filed: 1974-12-24
Abstract: 1498020 Photographic processing apparatus AMERICAN HOECHST CORP 24 Dec 1974 [26 Dec 1973] 55758/74 Heading G2X [Also in Division B2]  Objects 8 are sprayed intermittently while being transported past spray jets 2, 4, 6 controlled by a pulsing valve 16 arranged to provide a spray for a predetermined time followed by an interruption for a second predetermined time, a pump 12 continuously supplying spray liquid to the valve 16. The valve 16, controlled by a timer 18, may have an outlet communicating with the supply reservoir 10. Excess spray overflowing the object 8 may be discarded or recirculated. The pulsed spray apparatus may be used for spraying an exposed lithographic printing plate, as in Fig. 2 or a photopolymer letterpress plate, for chemical machine etching or for the application of protective or decorative coatings. In Fig. 2 an exposed printing plate successively passes through feedrollers 20, 22, is sprayed intermittently with developer by sprays 28 while travelling over a support plate 26, is brushed by a counter-rotating brush 30 to remove loosened or unwanted coating, is passed through transportsqueegee rollers 34, 36, is sprayed with rinse solution by pulsed sprays 38, passes transportsqueegee rollers 40, 42 is coated with gum or finisher from pulsed dispenser tube 48 by rollers 44, 46 and is finally dried by hot air driers 50, 52.
Patent GB-1268950-A (GB)
Title: Improvements in or relating to cooling-gas circulators for nuclear-reactor plants
Inventor: CAIRNS WALTER JOHN
IPC: G21C15/253
Filed: 1969-11-14
Abstract: 1,268,950. Electric motors. JAMES HOWDEN & CO. Ltd. 13 Nov., 1970 [14 Nov., 1969], No. 55778/69. Heading H2A. [Also in Divisions G4-G6] In a helium gas-cooled nuclear reactor, a gas circulator motor is housed in a chamber within the wall of the pre-stressed concrete pressure vessel. The motor has an outer, liquid bearing and an inner helium gas bearing. The reactor coolant blower, 5, is driven by the electric motor, 18, housed in the chamber, 34, in the concrete pressure vessel 1, enclosing the nuclear core, 2. The gas lubricated bearing 9 receives helium from the atmosphere surrounding the motor, circulated by the fan 15 on the motor shaft 16. After leaving the motor casing 21, the bearing helium gas passes to the coolers 36. The oil bearing 31 incorporates an oil-cooler 30 and an anti-back rotation clutch 26.
Patent GB-1217923-A (GB)
Title: Method of, and apparatus for pulverising materials
Inventor: BEIKE HANS
IPC: B02C21/00
Filed: 1968-11-26
Abstract: 1,217,923. Comminuting at low temperatures, H. BEIKE. 26 Nov., 1968 [27 Dec., 1967], No. 56038/68. Heading B2A. [Also in Division F4] Material is rendered brittle by passing it first through a stream of gas produced by evaporation of liquid cooling agent followed by immersion in a low temperature liquid followed by pulverisation in a mill 18. Granular or lumpy material in a hopper 1 is supplied by a valve 2 to a heat exchanger 3. A sensor 4 stops or starts the valve 2 when an upper limit 5 or lower limit 6 is reached respectively. Liquid nitrogen is supplied via a valve 7 to the charged vessel 3 under control of a sensor 9, and rises through the charge so that the surface temperature is approximately that of the non-cooled charge. When an excess pressure develops a valve 11 opens and the gas escapes into the hopper 1 via a perforated sheet 14. When the desired temperature in vessel 3 is obtained the sensor 9 actuates a worm 17 to supply the mill 18. This may be a conical disc or roller mill. Comminuted material is delivered via a valve 22 to a further fluidized-bed type counter-current heat exchanger 23 having a gas chamber 25, porous plate 26 and container 27. The apparatus is energized by a blower 28. The gas is circulated throughout the apparatus via a pipe 31. Ground material is finally delivered to a storage container 35. In a further embodiment the cooled gas from the device 23 may be used to cool the material in the hopper. A second gas, e.g. dry air may be used in the second heat exchanger, drawn in by the blower and supplied through the heat exchanger 23 to the space 13, in which case the hopper 1 is insulated.
Patent GB-1223358-A (GB)
Title: Improvements in or relating to guillotines
Inventor: BELCHER GEOFFREY
IPC: B26D7/22
Filed: 1968-11-27
Abstract: 1,223,358. Cutting apparatus. JAMES CHRISTIE & SONS Ltd. 26 Nov., 1969 [27 Nov., 1968], No. 56167/68. Heading B4B. A hand-type guillotine comprising a guard including side sheets 15, 16 secured at their ends to brackets 8, 11, a U-shaped member 23 pivotally mounted at one of its ends, on the bracket 8 and connected at its other end, to the sheets 15, 16 by a pin-and-slot device 20, 21, at least the side sheet 16 being formed of a transparent material. In the construction shown, two additional pairs of side-plates 19, 22 are connected between the U-shaped member 23 via pin-and-slot devices 20, 21, the pins being a loose fit in the slots so that upon lowering the knife 1 the guard members collapse with it. All the side-plates and U-shaped member 23 may be formed from transparent material and a stay may be provided for maintaining the guard in a raised position. A paper clamp (26, Fig. 2) formed from a spring steel strip and a scale (25) are provided. A padlock may be passed through holes 29 in the bracket 11 in order to lock the knife and guard assembly in the lowest position.
Patent GB-1477140-A (GB)
Title: Prefabricated buildings
IPC: E04B7/02
Filed: 1973-12-05
Abstract: 1477140 Prefabricated roofs DOMINION FOUNDRIES & STEEL Ltd 4 Dec 1974 [5 Dec 1973] 56375/73 Heading E1W A prefabricated roof is formed using a truss 20 spanning between walls 10 and located thereon by means, e.g. pins 18, which also locate gable members, e.g. trusses 36, which are locked to the ends of the truss 20. Prefabricated framed roof sections 52 with a covering 55 of, e.g. plywood, are located on the trusses 36 by keyhole slots 60 engaging over studs 62, and shingles, e.g., are placed on top, the spaces between the sections 52 being filled in beforehand. A layer 14 of heat insulating material is laid on the walls, and shorter pins 34, and longer pins 18 extend up from the wall and engage in holes 44 in the truss 36, and also in holes 30 in plates 28 fixed to the ends of truss 20. Truss 36 is bolted to truss 20 via angle member 46 and bracket 48.
Patent GB-1274058-A (GB)
Title: Methods of manufacturing glass enclosed electrical devices
Inventor: STOLL MILTON
IPC: C03C27/06
Filed: 1969-11-24
Abstract: 1,274,058. Semi-conductor devices. M. STOLL. 24 Nov., 1969, No. 57368/69. Heading H1K. [Also in Division C1] Electrical devices, particularly semi-conductor devices, are positioned within an openended tubular glass casing, the open end heated to collapse the glass on to the lead-in wire of the device or a glass lead thereon to form an initial ring seal and then applying a fluid at a pressure greater than that used during the heating to squeeze the glass at the initial ring seal to form a strong seal at the casing end. As shown, a tubular casing 33 with open end 34 and enclosing the lower semi-conductor body 40 and lead wire 42 is positioned in a clamp 46, 54 and an upper lead wire 20 and contact 18 is held by a magnetic chuck 26 and pressed down in alignment with the body 40 by weights 32. The assembly is enclosed in a hermetically sealable chamber 15. A glass bead 22 on wire 20 is spaced from the contact 18. Heading of the open end 34 of casing 33 is effected by an electric element 58 until the glass softens and, as shown, collapses on to the glass lead 22. The pressure P 1  in the chamber 15 is then increased (P 2 , Fig. 3) so that the softened glass is pressed fully into contact with the glass bead to effect the seal. The clamp 46, 54 may be of metal to act as a heat sink to cool the main part of the casing 33 round the body 40. Sealing may be effected in any desired atmosphere such as nitrogen or other inert gases, air or other non-oxidizing atmosphere. Initial pressure may be atmospherio, elevated, reduced or a vacuum.