baber/WOPTO huggingface dataset:
Patent GB-1522693-A (GB)
Title: Waveguides for elastic waves
IPC: H03H9/42
Filed: 1975-08-05
Abstract: 1522693 Acoustic waveguides WESTERN ELECTRIC CO Inc 5 Aug 1975 [12 Aug 1974] 32705/75 Heading H3U A waveguide for elastic waves comprises a core 12, which may be solid or liquid, surrounded by a cladding member 13 of circular cross-section which has a higher wave velocity and is of a thickness such that the particle displacement decreases to substantially zero within member 13. Torsional, radial or longitudinal waves may be employed. The waveguide may be mounted in a cushioning medium 18. The core and cladding may be separated by wedge-shaped members 31, Fig. 11, with the intervening space being evacuated. The core and cladding may be of the same material, e.g. silica, with doping being used to provide the desired velocity difference; the doping may vary gradually with radial distance. The waveguide may have enlarged ends (Fig. 8 not shown) and may be coiled (Fig. 10 not shown). The transducers 19, 20 may be of lead zirconate titanate. To generate radial waves a radially polarised disc Fig. 5, (not shown) has driving electrodes on its main surfaces; alternatively an orthogonally polarised disc may be radially driven. A circularly polarised disc, Fig. 7 (not shown) with driving electrodes on its main surfaces may be used to generate torsional waves. A square X-cut lithium niobate plate 36 with oppositely disposed sectored electrode pairs 37-40 may be used to generate either radial or torsional waves depending on the orientation of the crystallographic axes with respect to the electrodes.
Patent GB-1095668-A (GB)
Title: A novel 9ª‰, 10ª‡-steroid derivative
Inventor: REERINK ENGBERT HARMEN
IPC: C07J75/00
Filed: 1965-07-19
Abstract: The novel sodio derivative of 2-hydroxy-methylene - 17b  - hydroxy - 9b ,10a  - androsta-4,6-dien-3-one is prepared from the 2-unsubstituted compound and an alkyl, e.g. ethyl, formate in the presence of sodium methylate and preferably in benzene.
Patent GB-806084-A (GB)
Title: Improvements relating to suction cleaners
IPC: A47L9/00
Filed: 1956-10-26
Abstract: 806,084. Suction cleaner with detachable tool carrier. HOOVER Ltd. Oct. 26, 1956 [Nov. 10, 1955], No. 32763/56. Class 8(1). A suction cleaner of the canister type is provided with a detachable tool carrier and comprises a generally spherical casing 11 with an inlet 12, and an exhaust outlet 13, containing a filter 14 and a motor fan 15. A circular base 10 formed from a top ring 16 and bottom plate 17, is hinged to the casing and provided with a latch 31. Resilient buffers are secured to the outwardly sloping walls 21 to engage the casing and provide an annular clearance gap 34, through which air can escape. The vertical walls 20 are provided with a flange 19 which rests on the bottom plate, openings 25, leading into the annular chamber containing sound deadening material 27, and forms a housing for the detachable tool carrier. The tool carrier, which is inserted between the circular base 10 and the casing, extends round at least a part of the body of the cleaner and may comprise of stout wire. The base 36 carries three tool supporting brackets 40, generally U-form, to receive cleaning tools 48, 49 and 50 welded to the base which is shaped at the ends 37 and at a central position, with offset projections which may be inserted into three of the openings 25 to retain the tool carrier in the base of the cleaner.
Patent GB-743098-A (GB)
Title: Improvements in railway couplers
Inventor: KULIEKE FREDERICK CHARLES
IPC: B61G3/04
Filed: 1953-11-25
Abstract: 743,098. Railway couplers. AMERICAN STEEL FOUNDRIES. Nov. 25, 1953, No. 32769/53. Drawings to Specification. Class 103 (5). [Also in Group XXII] A knuckle is cast with a pivot pin-hole which has an enlarged portion eccentrically disposed with respect to the pivot-pin hole axis so that the metal thickness is greatest adjacent the throat. Specification 743,104, [Group XXII], is referred to.
Patent GB-1064305-A (GB)
Title: Ship stabilizer
IPC: B63B39/03
Filed: 1965-07-30
Abstract: 1,064,305. Ship-stabilizers. JOHN J. Mc- MULLEN ASSOCIATES Inc. July 30, 1965 [July 30, 1964], No. 32802/65. Addition to 1,000,920. Heading B7M. A passive-tank ship-stabilizer comprises a tank (16), Figs. 2 to 4 (not shown), charged with a liquid, e.g. water or oil, in a free-surface condition whose motion in response to that of the ship, e.g. rolling, is impeded by parallelplates (26, 28) mounted in a vertical attitude and having flanges (30) attached thereto, the sides (18, 20) of the tank being orientated in a direction, e.g. athwartships, parallel to the plane in which stabilization is to be effected. In a second embodiment, Figs. 5 and 6 (not shown), the motion of the liquid is impeded by plates (48, 50) which are similar to the plates (26, 28) but having an angular configuration to define a sinuous path for the liquid therebetween. In a third embodiment, Figs. 7 and 8 (not shown), plates (76, 78), which are similar to the plates (26, 28), lie on either side of a plate (80) having a plurality of verticallyorientated corrugations (98). In a fourth embodiment, Figs. 9 and 10 (not shown), the motion of the liquid is impeded by a plurality of parallel corrugated-plates (102) which are mounted in a vertical attitude. In a fifth embodiment, Figs. 11 and 12 (not shown), the plates (102) are replaced by plates (106) having roughened surfaces. The top of the tank may be closed by an adjacent deck of the ship.
Patent GB-823898-A (GB)
Title: Improvements in magnetic amplifiers
IPC: H02P7/30
Filed: 1957-10-22
Abstract: 823,898. Magnetic amplifiers. GENERAL ELECTRIC CO. Oct. 22, 1957 [Oct. 23, 1956], No. 32918/57. Class 40 (9). An auto-self-excited transductor 59, Fig. 5, comprises a main load 56 such as a capacitive circuit or a motor capable of producing counter electromotive forces, and a parallel auxiliary load resistance 64 the value of which is high compared with that of the main load, each load circuit including a respective self-excitation rectifier 57, 65. In this arrangement the auxiliary load takes sufficient current to permit the firing angle of the current through the main winding 58, as determined by energization of the control winding 60, to be unaffected by counter voltages developed by the main load. The arrangement may be applied to an autoself-excited full-wave rectifying transductor, Fig. 1, in which the main load 10 and the auxiliary load 26 are associated with selfexcitation rectifiers 11, 12 and 27, 28, respectively. Alternatively the main load 67 and auxiliary load 79, Fig. 6, may be connected to an auto-self-excited bridge rectifying transductor as shown, the auxiliary load circuit requiring four rectifiers 80-83 connected in a bridge. A three-phase embodiment is also described, Fig. 4, in which a three-phase supply 29 is connected to a main load 46 by way of main transductor windings 30-35 and self-excitation rectifiers 38-43, while the auxiliary load is connected to the main windings through self-excitation rectifiers 49-54.
Patent GB-903976-A (GB)
Title: Production of dinonylnaphthalene sulfonates
Inventor: CARDEN ROBERT LEO
IPC: C07C303/44
Filed: 1960-09-27
Abstract: A process for the production of dinonyl naphthalene sulphonates comprises (a) sulphonating with a sulphonating agent dinonyl naphthalene dissolved in 1-4 parts of a saturated hydrocarbon solvent per part of dinonyl naphthalene by weight, (b) quenching the reaction mixture with 0.10 to 0.20 parts of water per part of total SO3 in the sulphonating agent by weight, (c) diluting, if necessary, the quenched mixture with a saturated hydrocarbon solvent to a total solvent to dinonyl naphthalene ratio of 2.5-4.5:1 by weight, (d) allowing the mixture to statify and removing the sludge, (e) neutralising the sulphonic acid with an inorganic basic compound, (f) washing the hydrocarbon solvent solution of sulphonate with 2-4 parts of water per part of dinonyl naphthalene by weight, (g) allowing the layers to separate and removing the aqueous layer and (h) removing the solvent and residual water from the dinonyl naphthalene sulphonate.  The aromatic reactant may be prepared by alkylating naphthalene with propylene trimer e.g. in the presence of a phosphoric acid catalyst and the dinonyl compound then sulphonated, preferably with 20% oleum, in hexane or pentane.  After quenching and diluting the acid is preferably neutralised with an alkali metal or ammonium hydroxide or carbonate.  Examples illustrate various stages in the process.
Patent GB-604886-A (GB)
Title: Improvements in or relating to thermal cut-outs for performing electric switching operations
IPC: H01H71/20
Filed: 1945-12-07
Abstract: 604,886. Thermal switches. SOUTH WALES SWITCHGEAR, Ltd., and DAVIES, P. R. Dec. 7, 1945, No. 33196. [Class 38 (v)] In a thermal cut-out for electric boilers, and of the type wherein a spring-urged rod 6 is held by a pawl 14 engaging a ratchet-wheel 15 normally prevented from rotating by fusible material, the rod has a slot 12 engaging the operating lever 11 of a snap-action switch 9, which forms a complete unit secured to the frame by screws 8 and removable without disturbing the remainder of the parts.
Patent GB-486732-A (GB)
Title: Improvements in and relating to lighting fittings
IPC: F21V17/10
Filed: 1937-12-01
Abstract: 486,732. Securing globes to holders. BRITISH THOMSON-HOUSTON CO.,Ltd. Dec. 1, 1937, No. 33220. Convention date, Dec. 1, 1936. [Class 75 (ii)] The globe 5 of a lighting fitting is secured to the cover or canopy 13 by means of a spring collar 7 attached to the neck portion 6 of the globe and carrying a series of magnets 9 co-operating with a magnetic ring 14 sprung into a groove 15 on the inside of the canopy. In a modified form, a. magnetized ring is cemented to the neck of the globe and a ring of magnetic material is cemented inside the canopy. Alternatively the magnetized ring may be secured to thecanopy and thering of magnetic material to the globe. Specifications 382,471, [Group XV], and 424,746 [Group II], are referred to.
Patent GB-471501-A (GB)
Title: Improvements in and relating to electron discharge devices
IPC: H01J29/52
Filed: 1935-12-02
Abstract: 471,501. Cathode ray tubes. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. Dec. 2, 1935, No. 33394. Void. Convention date, Dec. 2, 1934. [Class 39 (i)] The electron beam is focused upon an aperture in a positive control electrode A by means of an electrode G connected to the cathode K, a magnetic coil or by the cathode the end of which may be concave. The effect on the electron emission from the cathode by the fields of the following accelerating and deflecting electrodes should not exceed 0À1 per cent and to obtain a beam of constant intensity, the ratio of the variations of the potentials on the electrodes G, A must not exceed 5 per cent.
Patent GB-1396701-A (GB)
Title: Strip casting
IPC: B22D11/06
Filed: 1971-07-16
Abstract: 1396701 Continuous casting A R E SINGER 13 Oct 1972 [16 July 1971] 33401/71 Heading B3F Molten metal such as Al, Cu or steel flows as a stream, shaped by a wide rectangular orifice 6 between a rotating roller 2 and a lower surface (such as that of a band 5 or large drum, say, of ten feet diameter), moving at approximately the same speed as the stream, which passes on to the surface and has its top and side surfaces open to the atmosphere and freezes to form a continuous strip 7, e.g. of a thickness of from 0À050-0À25 inches. The metal stream substantially retains its shape because the latter is determined so that surface tension and hydrostatic forces are closely balanced. The roller 2 (e.g. in a nitrogen atmosphere), to prevent wetting by the metal, is made of or is surfaced with carbon or ceramic (steel may be coated with ceramic). There may be a silicon nitride surface and the roller may be coated with mould dressing materials. It is rotatable in either direction at various speeds to maintain coincidence of velocity of the stream and band and is movable to adjust its spacing from the band 5. It may be offset by an angle 11 from the vertical plane through the axis of a drum 8 on which the band runs. The band 5 may be of steel, and to avoid wetting, it has an oxide coating or one of "Marinite (Registered Trade Mark), and graphite. The molten metal 1 may be siphoned into a trough formed between a dam 3 fitted with heaters 4, the preheated roller 2 and edge dams (not shown). An arrangement 12 cools the band 5 with water from below and another, 13, cools the cast strip 7 from above before it is peeled off by a knife 14 and the band is cleaned and further cooled before return to receive more metal. The drums 8 and 9 for supporting the band may be internally water-cooled.
Patent GB-818663-A (GB)
Title: Sterilising process
IPC: A23L3/3409
Filed: 1957-10-25
Abstract: Gaseous mixtures of ethylene oxide and propylene oxide, especially those of 25-75 per cent by volume of one with 25-75 per cent of the other, are used to sterilize goods such as foods and plastic packages.  Two examples illustrate the synergistic germ-killing action of a mixture of 60 per cent ethylene oxide and 40 per cent propylene oxide on Staphylococcus var. and of a mixture of 40 per cent ethylene oxide and 60 per cent propylene oxide on Bact. pyocyaneum.
Patent GB-489831-A (GB)
Title: Metal vapour electric converters
IPC: H01J13/20
Filed: 1937-12-03
Abstract: 489,831. Metal - vapour converters. SIEMENS-SCHUCKERTWERKE AKT.-GES. Dec. 3, 1937, No. 33508. Convention date, Dec. 7, 1936. [Class 39 (i)] In a metal-vapour electric arc or discharge converter in a metal vessel 1, having a grid 4 associated with an anode 3, the holding member for the grid is mounted in a tubular housing 5 outside and standing at an acute angle to the anode arm 2 of the vessel or to the anode protective tube. In the latter case the tube is contained wholly within a metal containing vessel and cooling ribs or tubes may be disposed between the anode protective tube and the tubular housing. As shown in the Figure, cooling ribs 6 may be provided, and the housings 5 are inclined at such an angle that any mercury condensed in the housings runs down to the cathode pool. Specification 367,648 is referred to.
Patent GB-1133234-A (GB)
Title: Pallets
Inventor: FREEMAN BRIAN DAVID
IPC: B65D19/34
Filed: 1966-07-26
Abstract: 1,133,234. Load handling pallets. IMPERIAL TOBACCO CO. 5 Sept., 1967 [26 July, 1966], No. 33566/66. Heading B8H. A disposable pallet formed of multi-ply corrugated board from a blank slit along pairs of lines 10, 11 and crease scored at 14 to 18 and 20 to 24 is erected by folding as shown in Fig. 2. Bands comprising first portions 40 and second portions 41 are adapted to receive inserts to provide rigidity. Inserts of folded board (not shown) may be used or some of the articles to be carried may be used as the inserts, Fig. 3 (not shown) and further articles stacked over the pallet. The pallet may be formed from small gauge metal or plastic.
Patent GB-425712-A (GB)
Title: Improvements in or relating to electrically driven duplicators
IPC: B41F13/004
Filed: 1933-11-30
Abstract: 425,712. Driving duplicating-machines. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and JACOBY, H. C. E., c /o General Electric Co., Witton, Birmingham. Nov. 30, 1933, No. 33597. [Class 100 (ii)] Relates to electrically driven duplicators of the kind the running of which involves a periodic inking operation resulting in an additional load on the driving-motor, and consists in providing means whereby the power input of the motor is automatically increased while inking is in progress. The speed of a D.C. or A.C. series motor 1 driving a rotary stencil duplicator having inking- mechanism arranged within a drum and periodically moved to ink up a pad on the drum, is regulated by moving a spring contact 4 over resistances 5, 6, part of each resistance being in the motor circuit. A lever 7 controlling the inking operation is coupled to a switch 8 with normally open contacts connected between the terminal of the resistance 6 and the contact 4, whereby the effective part of the resistance 6 is short circuited when inking is in progress, the arrangement being such that even at the maximum speed position of the contact 4, there is still part of the resistance effective. The resistance short circuited is greater for low speeds than for higher speeds.
Patent GB-1392192-A (GB)
Title: Devices for dispensing fluids from pressurised dispensing con tainers
IPC: A61M15/00
Filed: 1971-07-19
Abstract: 1392192 Delivering measured quantities of liquid BESPAK INDUSTRIES Ltd and W E WARREN 11 July 1972 [19 July 1971] 33793/71 Heading B8N [Also in Division F1] A discrete quantity of fluid discharged from a pressurized dispensing container is caused to flow into an air duct having an inlet and an outlet, when a flow sensor detects a difference in pressure between the inlet and the outlet. As shown a medicament inhaler comprises a housing 11 having air duct 28 which leads from holes at 29 up one side of a pivoted vane 31 and down the other to an outlet 12. A socket 18 receives the valve stem 16 off a pressurized dispenser 14 and has an outlet 18a closable by a valve 22 in a socket 19 having a discharge orifice 21 within the duct 28. The discrete quantity is measured between the container valve and the valve 22 which is engageable by a rod 23 on the end of a lever 26 connected to the vane 31 and pivoted at 26a on a flange 26b. A spring 30 causes the rod 23 to hold the valve 22 on the outlet 18a so that when the container 14 is depressed a charge is held in the stem 16 and socket 18 above the valve. Suction on the outlet 12 causes the vane 31 to pivot, withdrawing the rod 23 from the valve 22 so that the charge is released into the air flowing through the duct 28. A cap 32 closes the outlet 12 when not in use and has a pin 33 which engages an extension 34 of the lever 26 to allow the valve 22 to open; a tongue 32a closes the air inlets. Two other embodiments (Figs. 2 3, not shown), are described and comprise lever mechanisms which are spring loaded to close the valve, the levers having detents which are tripped by movement of the vane. The Fig. 3 embodiment includes a lever for depressing the container. It is stated that the valve may be opened by a solenoid, air flow being detected by a hot wire anemometer for example in a bridge circuit including a battery.
Patent GB-498462-A (GB)
Title: Improvements in prepayment mechanism for meters
IPC: G07F15/00
Filed: 1937-07-05
Abstract: 498,462. Prepayment mechanism for meters. ENGLISH ELECTRIC CO., Ltd., TILSTONE, G., and DONELLY, J. F. July 5, 1937, No. 33862 /38. Divided out of 498,306. [Class 27] In a prepayment meter, a front plate 1 carrying the actuating handle and coin slot is attached to the framework of the prepayment mechanism, and a separate surrounding detachable cover 2, with a clearance aperture 2a for the actuating handle and coin slot, shuts in the whole of the prepayment mechanism. The cover 2 can thus be removed to leave the whole of the prepayment mechanism, the boundaries of which are indicated by dotted lines, substantially fully exposed for examination and testing without disturbing the front plate and actuating handle. A projecting rib 3 on the front plate engages packing 4 in a groove on the cover 2 to form a good joint. Where the prepayment mechanism is mounted within the meter casing, the cover 2 serves as the meter cover.
Patent GB-205734-A (GB)
Title: Improvements in grate bars for gas producers
IPC: F23H13/08
Filed: 1922-12-12
Abstract: 205,734. Easton, R. W. Dec. 12, 1922. G r a t e s.-A producer grate comprises a number of plates of different diameter or size mounted on a shaft which may be rotated to clear the grate of ashes, &c. The plates B are helical in form and mounted on the shaft D. The plates may be flat and may be circular or other shapes, the largest plate being arranged in the centre with the others gradually decreasing in size on each side. The plates may be separate or cast integrally.
Patent GB-964262-A (GB)
Title: Improvements in or relating to electron multiplying devices and circuit arrangementstherefor
Inventor: MCGEE JAMES DWYER
IPC: H01J43/08
Filed: 1959-10-07
Abstract: 964,262. Electron multipliers. ELECTRIC & MUSICAL INDUSTRIES Ltd. Sept. 23, 1960 [Oct. 7, 1959], No. 33916/59. Heading H1D. An electron multiplier, e.g. for use in scintillation counting, comprises a photo-cathode 3 on the inner surface of a domed support, a foraminated electrode 8 co-extensive with the cathode and at a uniform distance therefrom, and a dynode 13, the arrangement being such that the transit times to the dynode of the electrons, which proceed radially from the cathode, are substantially equal. As shown, the cathode 3 and electrode 8 are part-spherical and the dynode 13 is disposed in the vicinity of their common centre of curvature. The cathode may comprise a layer of antimony sensitized with caesium or with a plurality of different alkali metals such as sodium, potassium and caesium, on a Nesa layer. The electrode 8 may have an optical transparency of 90% or more with about 1096 hexagonal apertures per square inch. Suitable dimensions, spacings and operating potentials for the various electrodes are given, dynode 13 never being positive with respect to electrode 8 to avoid emission from the latter.
Patent GB-1362238-A (GB)
Title: Acoustic surface wave devices
IPC: H03H9/02
Filed: 1971-07-21
Abstract: 1362238 Acoustic surface wave filters; delay lines MULLARD Ltd 21 July 1971 34170/71 Heading H3U An acoustic surface wave delay device, Fig. 1, comprises, mounted on a ceramic piezo-electric wafer 1, input and output transducers 2, 3, each comprising pairs 5, 6; 7, 8 of interdigitated electrodes, connected in series by means of conductive link 17, terminations 15, 16 being provided. Since fingers 10<SP>1</SP>, 1011 have between them the full applied H.F. voltage, they may be changed in either size or overlap as compared with the other fingers 10. It is stated that such an arrangement reduces the filter input and output capacitance. More than two, for example four, electrode pairs may be provided, preferably each having the same impedance over the working frequency range. An acoustic surface wave band pass filter, Fig. 2, comprises, mounted on ceramic piezo-electric wafer 21 input and output transducers 22, 23 each comprising electrodes 30, 31 connected to terminations 35, 36, which, in the central region of the transducer have directly interdigitated fingers, whereas in the outer regions of the transducer, they are coupled by means of conductively connected electrodes 33, 34, the voltage between adjacent fingers in the outer regions thus being half that in the central region, correspondingly weakening the acoustic surface wave radiating power of the fingers in the outer regions. The output transducer 23 may alternatively be of a uniform construction. The electrodes are formed, photolithographically, from vapour deposited gold.
Patent GB-1019871-A (GB)
Title: Thermally responsive electrical control device
IPC: H01H37/54
Filed: 1962-05-29
Abstract: 1,019,871. Thermal switches. TEXAS INSTRUMENTS Inc. May 29, 1962 [May 31, 1961], No. 34185/65. Divided out of 1,018,422. Heading H2B. The subject-matter is the same as in Specification 1,018,422 but the claims are concerned with the manual resetting mechanism.