baber/WOPTO huggingface dataset:
Patent GB-477767-A (GB)
Title: Improvements in or relating to the production of oxide cathodes for electric discharge tubes, and to tubes provided with such cathodes
IPC: H01J9/04
Filed: 1936-06-05
Abstract: 477,767. Coating wires. EGYESULT IZZOLAMPA ES VILLAMOSSAGI RESZVENYTARSASAG. June 5,1936, No. 15793. Convention date, June 5, 1935. [Class 140] [Also in Group XL] A cathode is made by cleaning a thin -nickel or nickel iron wire, or a wire of an oxidizable metal such as tungsten, molybdemun or tantalum, coating it completely with a suspension of an alkaline earth oxide so as to prevent the access of air, drying below 200‹ C. and activating in the usual way in the bulb, gases emitted being continuously removed. A suitable coating material is a suspension of the carbonates or oxalates of the required metals in a solution of nitro-cellulose in organic solvents such as acetone or amyl alcohol. The coating may be appliedby spraying, by passing the wire over a grooved roller, the lower part of which is immersed in the liquid, or by means of an apparatus such as that shown. Tungsten wire À14 mm. in diameter is cleaned by rotary brushes 3 in a vessel 2 containing an alkaline solution and is then dried in a chamber 5 by a current of heated hydrogen. It then passes, still surrounded by hydrogen, through a nozzle 7 to a tank 8 containing the coating-solution and then to a drying chamber 11. The escaping hydrogen is collected in a glass bell 9. Several examples of suitable compositions are given. The invention is stated to be especially applicable to cathodes such as those described in Specifications 453,549 and 453,564, [both in Group XL].
Patent GB-1269577-A (GB)
Title: Improvements in or relating to the working unit of a mining machine
Inventor: STEPANOVSKY EVGENY LEONIDOVICH
IPC: E21D9/11
Filed: 1969-03-26
Abstract: 1,269,577. Mining machines. DONETSKY GOSUDARSTVENNY PROEKTNO-KONSTRUKTORSKY I EXPERIMENTALNY INSTITUT KOMPLEXNOI MEKHANIZATSII SHAKHT. 26 March, 1969, No. 15793/ 69. Heading E1F. A mining machine has a working unit comprising at least one head 7 fitted with rock crushing tools 8 and secured by a hinge 6 to a rotatable face plate 3 mounted on a shaft 1, the tools 8 being positioned on the head in a step-like pattern with their working edges spaced at different distances from the hinge with the distances increasing towards the axis of shaft 1. In the embodiment described there are two heads swung about each hinge 6 by cylinders 10 with the swinging being synchronized by rods 16 and slider 17 or by gearing the heads together or by controlling the flow of liquid to cylinders 10. The tools 8 may comprise rollers as shown or milling or toothed cutters.
Patent GB-799684-A (GB)
Title: Improvements in or relating to triggering circuits for synchronised electric oscillators
Inventor: GOFF PAUL FREDERICK
IPC: H04N5/10
Filed: 1955-06-02
Abstract: 799,684. Triggering scanning oscillators. PLESSEY CO., Ltd. May 17, 1956 [June 2, 1955], No. 15800/55. Class 40 (6). In a television frame synchronizing circuit the mixed frame and line pulses are applied through a differentiating network to a diode or other non-linear device arranged to pass only the frame pulses, the diode also serving to isolate the frame oscillator from the synchronizing pulse source as soon as the oscillator has been triggered. In the circuit shown the mixed line and frame pulses (Fig. 2) are applied through an RC network 1, 2 to the line oscillator 7. The network 1, 2 also operates as a differentiator producing an output at the junction of the components of the form shown in Fig. 3. This is applied through a resistor 3 to a diode 9 biased from the anode the valve 7 through resistor 2 so that the line pulse output is short-circuited and only the frame pulses are allowed to pass. The first pulse of the resulting waveform (Fig. 4) triggers the blocking oscillator valve 14 causing grid current to flow and the diode to conduct. Accordingly the diode short-circuits the supply of succeeding pulses to the blocking oscillator. Any residual line-scanning pulses that appear across the diode may be removed by a filter if desired.
Patent GB-930619-A (GB)
Title: Improvements in, or relating to, stands or pedestals
Inventor: DOUGLAS JACK ERNEST
IPC: A47G33/12
Filed: 1961-05-02
Abstract: 930,619. Pedestal stands. ARTHUR SHAW & CO. Ltd. May 1, 1962 [May 2, 1961], No. 15805/61. Class 52 (3). [Also in Group XV] A stand, for supporting the trunk 7 of a Christmas tree, umbrella &c., comprises a hollow, cylindrical body 1 having removable, divergent legs 3 and includes spaced, axially adjustable pins 6, e.g. screws, which extend radially through the wall of the body 1. Caps 4 may be removed from the legs 3 for engagement in the ground. The inner ends of the pins 6 may be pointed.
Patent GB-1373851-A (GB)
Title: Cross-wedge rolling apparatus
IPC: B21H3/10
Filed: 1972-04-06
Abstract: 1373851 Cross wedge rolling VYZKUMMY USTAV TVARECICH STROJU A TECHNOLOGIE TVARENI 6 April 1972 [23 April 1971] 15816/72 Heading B3M Cross wedge rolling apparatus for forming a thread on a workpiece comprises a pair of tools 1 between which a blank is rolled, each tool having oblique grooves 4 in its surface for forming threads on the finished workpiece 5. The tools may be in the form of triangular platens, or they may be provided on the surfaces of cylindrical rolls (Fig. 2, showing a developed view of such a tool). By providing grooves over only half the width of each tool, a partially threaded workpiece may be rolled (Figs. 6 and 7, not shown). A cylindrical blank may be rolled by the tools to produce a gimlet.
Patent GB-387211-A (GB)
Title: Improvements in lining surfaces such as walls and floors with glass plates
IPC: E04F13/14
Filed: 1932-06-04
Abstract: 387,211. Wall coverings. MORITA, K., 27, Rue La Fontaine, Paris. June 4, 1932, No. 15852. Convention date, June 12, 1931. [Class 20 (iv).] Glass plates for covering surfaces are coated on one surface with silicious material added in the form of a paste, the coating being subsequently dried. If desired a roughened surface may be produced on the coating by means of brushes or combs. The plates so treated may be affixed to the wall by means of plaster or cement. A suitable mix for the coating comprises 100 grams of sodium silicate lye of 32‹ BaumÚ and 30 grams of zinc oxide. The paste is spread on the plates which are heated for a few hours at a temperature of 40‹ C. and afterwards for a suitable time at a temperature of 100‹ C. or more. The coating may be pigmented.
Patent GB-159093-A (GB)
Abstract: 159,093. Atfield, E. Feb. 2, 1920. Grates and fuel-holders. -A portable fire-grate, capable of being moved with its contents from one room to another, is constructed of front and bottom gratings A and legs B cast in one, and back and sides of a single piece of sheet metal secured in grooves in the frame A by means of lugs E, F and screws. The ash-pan has flanged sides adapted to slide in supports G and slots in the front.
Patent GB-904999-A (GB)
Title: Improvements in lathe and like tool holders
IPC: B23B27/00
Filed: 1961-05-03
Abstract: 904,999. Lathe &c. tool-holders. BOBERG, E. U., and DAHLIN, K. G. May 3, 1961 [May 3, 1960], No. 15975/61. Class 83 (3). A lathe or like tool-holder comprises members 1, 2 hinged together to form a groove 3 for the shank 4 of a tool, and aligned by a rib and groove 6, 5. Hinges are provided in at least two positions, and consist of lengths of wire 7 inserted in bores 8 and then deformed through bores 9.
Patent GB-1004551-A (GB)
Title: Improvements in the construction of suspended ceilings
IPC: E04B9/12
Filed: 1964-04-17
Abstract: 1,004,551. Suspended ceilings. M. FORKIN and FORKIN BROTHERS Ltd. April 17, 1964 [June 17, 1963], No: 16015/64. Heading E1V. Ceiling panels 1 are supported from flat metal suspension bars 3 by means of parallel wooden battens 2 fixed under the bars 3 by means of clips 5 each with an upper hooked end and a lower horizontal end which is forced into one side of the appropriate batten. Wooden cross members 6 may be used to brace the battens, being secured thereto by U-sectioned metal shoes 8 each having the top edge extended to form a flange 12 which is secured to the top of a batten, and the sides extended and bent back to form lateral flanges 14 with projections 15 which are forced into the sides of the battens.
Patent GB-530251-A (GB)
Title: Improvements in and relating to electric discharge devices
IPC: H01J25/12
Filed: 1939-05-31
Abstract: 530,251. Cathode-ray tubes; electron oscillators. BRITISH THOMSON-HOUSTON CO., Ltd. May 31, 1939, No. 16052. Convention date, June 1, 1938. [Class 39 (i)] In apparatus wherein an electron beam is velocity-modulated and then allowed to pass through a drift space wherein the velocity modulation is converted into density modulation, as described in Specification 518,015 the density modulated beam is coupled to an oscillatory circuit connected to conductors whereby the potential oscillations produced in the circuit effect a further velocity modulation of the beam. A beam from an indirectly-heated cathode is focused by a cylinder 15 and accelerated by rings 21, applied to the inner wall of the envelope and an anode 16 onto a graphite anode 18 ; the rings 21 are provided with external terminals 23. Electron-optical systems or electromagnets 25 further concentrate the beam. A tubular suppressor grid 19 is provided. The velocity of the beam is modulated by a tubular electrode 33 which is arranged within the earthed conducting tube 30 and has a length such that the electrons traverse the tube in a half-period of the modulating potential. A concentric transmission line 35 conveys the high-frequency potential to the modulator 33. The velocity-modulation is subsequently converted into density modulation in the drift space 39, the length of which may be determined by an equation contained in the Specification. A second velocity-modulating electrode 44 is provided, and is connected with a resonant circuit, formed, e.g. by a condenser &c., or by the concentric members 46, 47 the length of which is one quarter the wave length of the modulating frequency, so that the high frequency potential induced in the electrode 44 by the beam cause a further velocity-modulation of the beam. The length of the members 46, 47 may be adjusted so that the second velocity modulation may be in phase with the first. A further drift space 50 is provided and energy is abstracted from the beam by a tubular electrode 52 and supplied through a concentric transmission line 54, 55 to a discharge device or an aerial. More than two modulating stages may be used, e.g. a third velocity modulating device may be tuned to a harmonic, e.g. the second, of the main modulating frequency so that only energy at the harmonic frequency is abstracted from the beam. Specifications 523,712 and 530,785 also are referred to.
Patent GB-309336-A (GB)
Title: Improvements relating to cooking devices
IPC: F24C7/08
Filed: 1928-06-19
Abstract: 309,336. Hopewell, G. A. June 19, 1928. Resistance ovens.- A thermally-insulated electrically - heated cooking vessel is fitted externally with a casing containing a switch-member which when closed is held in position by a latching-lever controlled by a clockwork time-setting device such that the heating current may be switched off at any previously selected time. An electric oven, Fig. 1, comprising a double-walled air-tight vessel is thermally insulated with asbestos, slag wool or the like and electrically heated in any suitable manner. A hinged casing 14 contains the switching device 15, Fig. 2, mounted on an insulating base 18. The heating circuit, comprising heaters 13', is closed, through the medium of contacts 17, by means of a finger lever 27 which is adapted to rotate a switch member 23 mounted on a columns 26 and biassed to open position by a spring 24. The member 23 is held in position by a pivoted latching-lever 29 biassed by a spring 32 and may be released to open the circuit at any selected time by means of a pin 34 which rocks the lever 29 and is rotated by clockwork 16. Tubular brackets 37 secure the clock to split pins 38 fixed to the bottom of the casing which may be fitted with a glass window. A timesetting mechanism may comprise a pointer adapted to rotate about the axis of the hands of the clock and co-operating with a suitable scale on the clock face. A winding handle for the clockwork and a knob for the setting of the timerelease mechanism may be arranged to extend to the exterior of the casing. A semicircular area 36 cut in the casing limits the movement of the member 34 and allows the mechanism to be released from the exterior. Specification 3254/07, [Class 38, Electricity, Regulating &c.], is referred to.
Patent GB-497262-A (GB)
Title: Improvements in or relating to electric insulators
IPC: H01B17/50
Filed: 1937-06-10
Abstract: To increase the surface resistance under wet or moist conditions of ceramic insulators of the kind used in strings or chains, the insulators are each provided on their surface with a coating or belt, presenting a continuous barrier to electrical discharges, which comprises at least two superimposed layers containing chlorinated naphthalene, the innermost layer being a mixture of between three and four parts of a chlorinated naphthalene containing not less than 50 per cent chlorine with one part of a normally solid chlorinated hydrocarbon of lower softening point, or a, mixture of such chlorinated hydrocarbons, whilst the outermost layer consists of a chlorinated naphthalene containing at least 63 per cent chlorine, or a mixture of chlorinated naphthalenes which has a chlorine content of at least 63 per cent.  When the insulators have corrugated sheds the coating is preferably applied as a belt to the re-entrant portions of the insulator.  The innermost layer may consist of a mixture of three parts of a chlorinated naphthalene of 63 per cent chlorine content with one part of a chlorinated naphthalene of 56 per cent chlorine content.  The chlorinated hydrocarbon of lower softening point may consist of a mixture of chlorinated naphthalene, chlorinated rubber and chlorinated paraffin wax. Two examples of such mixtures are included in the Specification. The outermost layer may comprise a mixture of 90 per cent of chlorinated naphthalene of 65 per cent chlorine content with 10 per cent chlorinated naphthalene containing 56 per cent chlorine. The layers are preferably applied by rotating the insulator whilst it dips in a bath of the molten coating material.  Specification 438,807 is referred to.
Patent GB-831038-A (GB)
Title: Improvements in fuel control systems for turbo propeller engines
IPC: F02K3/00
Filed: 1958-05-21
Abstract: 831,038. Gas-turbine plant. GENERAL MOTORS CORPORATION. May 21, 1958 [May 28, 1957], No. 16306/58. Class 110 (3). [Also in Group XXXV] A gas turbine E with a power output shaft S has a conventional fuel control system comprising a pump 11 and an associated fuel controller 16 by-passing fuel through a line 31; the power setting is varied by a hand throttle 17. A fuel delivery line 32 connects the controller to a Venturi 51 and a by-pass valve 52; the Venturi is connected to the burners by a line 33. A diaphragm 61 in the by-pass valve 52 lifts a poppet 53 from a seat 54 to by-pass fuel through a line 58 when the rate of flow in the Venturi exceeds a value determined by a spring 68, the compression of which is partially dependent on the position of a piston 69 movable between limit stops 72, 73. The movement of the piston is controlled by an electrohydraulic servo (Group XXXV) so as to maintain the output torque in the shaft S at a predetermined value.
Patent GB-877611-A (GB)
Title: Improvements relating to electric fuses
Inventor: COX JOHN EDWARD
IPC: H01H85/042
Filed: 1958-05-21
Abstract: 877,611. Cut-outs. ELECTRIC TRANSMISSION Ltd. Aug. 20, 1959 [May 21, 1958], No. 16347/58. Class 38 (1) In an electric fuse comprising an insulating body 1 having end caps 2 and housing a number of elongated star-section insulating cores 3 which are embedded in arc-quenching powder 5 and around which fusible elements, connected in parallel between the caps 2, are helically wound with common pitch, the elements are arranged so that adjacent portions on adjacent cores are at substantially the same electrical potential when a voltage is applied across the fuse. As shown in Fig. 2, adjacent elements are wound in opposite directions so that adjacent portions such as 15, 16 are each the same distance and thus at the same potential, from the starting portions 8, 9 which are connected through lead wires 10, 11 to an end cap 2. In a modification, Fig. 3 (not shown), adjacent elements are wound identically but each core is turned about its length with respect to its neighbour so that portions of equal potential are adjacent each other.
Patent GB-944927-A (GB)
Title: Improvements in or relating to electro-acoustic transducers
IPC: H04R9/02
Filed: 1960-05-10
Abstract: 944,927. Microphones ; loud-speakers. J. E. HATCH. May 10, 1960, No. 16424/60. Heading H4J. A microphone or loud-speaker having a frame 12, Fig. 1, of magnetic material and a diaphragm 20<SP>1</SP> includes a short-circuited conductor loop 19 of non-magnetic material supported in an annular air-gap 15 by a resilient annular corrugated centring ring 20 connected at its inner periphery to the loop 19 and to the diaphragm 20<SP>1</SP> and at its outer periphery to a rigid ring member 21 on the frame 12. Loop 19 is of copper or aluminium. A field coil 17 on a core 16 of transformer iron is connected to a D.C. source 18 to provide a steady magnetic flux in the air gap 15. A coil 22 acts as a signal winding. The loop 19 may be a cylindrical ring, Fig. 3 (not shown), or may be a short-circuited coil of wire 33, Fig. 5, wound on insulating material 30. Alternatively a plurality of spaced copper or aluminium rings 31, Fig. 4, may be embedded in a cylinder 30 of plastics material. In an alternative arrangement, Figs. 6, 7, an annular member 35 of transformer iron is surrounded by a pair of diametrically arranged permanent bar magnets 36, 37 secured to the upper and lower arms of frame 12<SP>1</SP> to provide steady flux in an air-gap 56. The short-circuited loop 40 is provided with a pair of arcuate arms 41 which extend axially through arcuate slots 42 in face 14<SP>1</SP> of the frame 12<SP>1</SP> and which merge with a ring member 43 connected to cone 20<SP>1</SP>. The loop 40 is connected by a corrugated centring ring 46 to a rigid supporting ring 45 secured to face 14<SP>1</SP>. In addition, loop 40 is connected by a second corrugated centring ring 47 to a rigid supporting ring 48 secured to bar magnets 36, 37.
Patent GB-1301148-A (GB)
Title: Process for preparing fluorinated peroxides
IPC: C07C409/16
Filed: 1970-04-07
Abstract: 1301148 Peroxides ALLIED CHEMICAL CORP 7 April 1970 [11 July 1969] 16530/70 Heading C2C Compounds of formula (R) 3 COOC(R) 3  in which each R is a C 1-6 -alkyl, fluoroalkyl, cycloalkyl or fluorocycloalkyl group or an aryl or aralkyl group, at least one R being a fluoroalkyl or fluorocycloalkyl group, and the peroxide containing at least five fluorine atoms, are prepared by reaction of a compound, or mixture of compounds of formula (R) 3 COX, in which X is hydrogen or an alkali metal, with chlorine trifluoride. The products are polymerization initiators.
Patent GB-847380-A (GB)
Title: Improvements relating to traps for intercepting particles in an airstream
Inventor: MORGAN FREDERIC FRANCIS LLEWEL
IPC: B01D45/14
Filed: 1956-05-29
Abstract: 847,380. Separating liquid particles from gases. HOLMAN BROS. Ltd. May 17, 1957 [May 29, 1956], No. 16579/56. Class 123(3) [Also in Group XXVIII] A trap for intercepting and effecting at least partial separation of molten particles carried by an air stream in a duct 12 comprises a casing 10 interposed in said duct and containing an open-ended cylindrical rotor 20 providing a constantly changing surface against which the particle-laden air impinges; the air then leaving the casing through an outlet 18 connected to said duct. Rotation of the cylinder is effected by the action of the air streaming against saw cuts 24 in both ends, no bearings being provided. Specification 840,422 is referred to.
Patent GB-1038577-A (GB)
Title: Improvements in, or relating to, shelves and like fittings
Inventor: SAINSBURY JOHN
IPC: A47G29/02
Filed: 1964-04-22
Abstract: 1,038,577. Shelves. SAINSBURY & PARKINSON Ltd. July 21, 1965 [April 22, 1964], No. 16609/64. Heading A4B. A metal shelf 1 mounted on a wall over a radiator has two pairs of studs 3 welded perpendicularly to the underside of the shelf and rubber mounting blocks having open-ended T-section slots 5 have holes 6 to receive the studs so that when angle brackets 11 are slid into the slots the studs engage the brackets to retain the shelf in position, the rubber blocks being stressed. Leaf springs having prongs 9 are engaged with the studs to retain the blocks on the studs and the rear edge of the shelf has a foam rubber strip 10.
Patent GB-1101517-A (GB)
Title: An independently controlled inverter
IPC: H02M7/515
Filed: 1965-04-21
Abstract: 1,101,517. Inverting. LICENTIA PATENTVERWALTUNGS G.m.b.H. 21 April, 1965 [21 April, 1964], No. 16723/65. Heading H2F. The main controlled rectifiers S of an inverter in bridge connection are turned-off by pulses derived from capacitors C 1 , C 2  connected across bridges of controlled rectifiers S 1  to S 4  through additional controlled rectifiers Z 1 , Z 2 , Z 3  (Fig. 1). Alternatively, there may be a set of elements C 1 , S1, S 2 , S 3 , S 4  for each main controlled rectifier S in which case the additional controlled rectifiers (such as Z 1 ) are not required (Fig. 2, not shown). In a further embodiment (Fig. 3), each bridge of controlled rectifiers S 1  to S 4  functions as a main controlled rectifier. The invention may be used in pulse-controlled inverters. Each rectifier in the drawings may be a number of rectifiers in parallel.
Patent GB-915330-A (GB)
Title: Improvements in or relating to rotary filters
IPC: B01D33/073
Filed: 1960-05-12
Abstract: 915,330. Rotary filters. PICKARD, J. A. May 8, 1961 [May 12, 1960], No. 16769/60. Class 46. A rotary drum filter 5 is furnished with at least one device comprising end plate 13 with a liquid inlet 16 and outlet 17 and an intermediate plate 14, the latter being disposed outside of, and generally parallel to the axis of, the filter drum 3 to define, with the filter cake 9 on the drum, a trough, Fig. 4, elevated or positionable above the level of the unfiltered liquid 7. The end plates 13 ride on a smooth band 6 at each end of the drum. A flexible serrated curtain 15 bridges a gap between the plate 14 and the filter cake and is in sliding contact with the end plates. Instead of the curtain 15, a resiliently mounted skirt, or resilient mounting of the plate 14 itself, may be employed. A scraper 8 is incorporated. Unfiltered liquid is fed to the trough 10 by a pump and in this embodiment wash water, which may be charged with kieselguhr, is fed from a tank to the troughs 11 and 12 by a further pump. A vacuum connection (not shown) is provided for lowering the air pressure within the drum 3, which is divided into sectors co-operating with a central slide distribution valve for the application of vacuum.