baber/WOPTO huggingface dataset:
Patent GB-653926-A (GB)
Title: Improvements in or relating to circuit arrangements embodying electron discharge devices employing target electrodes
Inventor: LUBSZYNSKI HANS GERHARD
IPC: H01J29/02
Filed: 1948-06-22
Abstract: 653,926. Cathode-ray tubes. ELECTRIC & MUSICAL INDUSTRIES, Ltd. June 22, 1948, No. 16687. [Class 39 (i)] In a cathode-ray tube having a target electrode which is scanned by a low-velocity beam so that elemental areas are stabilized at an equilibrium potential corresponding to that of the cathode, the scanned area of the target is surrounded by a conducting border maintained at such a potential that electrons from the beam are prevented from impinging thereon, whereby the border defines the area from which signals can be obtained. Within the envelope 1 of a television generating tube is a target electrode in the form of a mosaic 2 of the photo-electric type formed on a sheet of mica 3, on the opposite surface of which is a transparent signal electrode 4 through which an optical image is projected on to the mosaic by a lens system 5. The mosaic elements are scanned by an electron beam generated by a thermionic cathode 6 surrounded by a screen 7, the electrons being accelerated by an electrode 8 and then decelerated by a wall anode 9 and a decelerating electrode 10. The beam is scanned by scanning coils 11 and the tube is enclosed in a longitudinal magnetic field set up by a solenoid 12 which causes the electrons to impinge on the target normally. The signal electrode 4 is connected through the envelope 1 to a conductor 14 and thence to earth through a signal resistance 13. The area of the target electrode which is scanned is surrounded by a conducting border 17 which is maintained at such a potential that electrons from the scanning beam are prevented from impinging on the conducting border so that this defines the area of the target electrode from which signals can be obtained. The potential of the border 17 may be zero, in which case it may be connected to the signal electrode 4. Alternatively the border 17 may be maintained at a slightly negative potential with respect to the cathode 6. The conducting border 17 may be applied to the mosaic target by evaporating a film of metal after formation of the mosaic elements or it may be deposited on the mica sheet 3 before formation of the mosaic elements. A non-photosensitive target may alternatively be employed on one side of which an electron image is projected, the other side being scanned.
Patent GB-779583-A (GB)
Title: Improvements in or relating to travelling wave tubes
IPC: H01J23/30
Filed: 1954-06-08
Abstract: 779,583. Travelling-wave tubes. TELEFUNKEN GES. June 8, 1954 [June 5, 1953], No. 16706/54. Class 39(1). Wave attenuating means are provided in the space between the helix of a travelling-wave tube and any surrounding tubular metal structure such as a focusing coil or permanent magnet or a metal screen or an electrostatic focusing cylinder or a metal portion of the tube envelope, to reduce or suppress spurious reflected waves generated in the waveguide formed by the said tubular metal structure. In one embodiment, Fig. 1, the helix 3 is supported by three rods of insulating material such as ceramic provided in known manner with a layer 31 of damping material to attenuate reflected waves in the immediate vicinity of the helix. Members 10 and 11 which act in a manner similar to that of a wave rejector are provided on the insulating rods in the space between the helix 3 and the coil or permanent magnet 4. Alternative forms of wave attenuating members comprise annuli threaded on the insulating rods and dimensioned so as to act as resonant windows, or a number of annuli may be fixed on a metal tube at such a distance from each other that the member acts as a rejector, or at such a distance that the member acts as a retarding line comprising a series of resonant circuits, or a metal cylinder may be placed inside the tube envelope surrounding the helix so as to leave insufficient space for transmission of the spurious waves. When the tube envelope comprises a metal portion the wave attenuators may be grooves 16 and 17, Fig. 7, formed in the metal wall 15, or metal tubes 23 and 24, Fig. 8, each connected to the wall 15 by a flange 18. The individual attenuating members may be tuned to different frequencies in order to suppress a wide band of frequencies. Thus, the members 10 and 11 in Fig. 1, the slots 16 and 17 in Fig. 7 or the metal tubes 23 and 24 in Fig. 8 may be of different lengths. The attenuating members may be located outside the tube envelope. For example, members of the form shown in Fig. 8 may be located in the space between the glass tube envelope and the surrounding metal former of a beam focusing coil. Alternatively the focusing coil may be divided into sections 41, 42, 43 &c., Fig. 11, with intermediate spaces to act as impedances in the path of the spurious waves. Short circuit rings 32 may be provided for tuning purposes and to prevent the escape of high frequency energy.
Patent GB-612781-A (GB)
Title: Improvements in drag-line excavators
IPC: E02F3/60
Filed: 1946-06-03
Abstract: 612,781. Drag-line excavators. WILKINS, E. G., and WILKINS, G. R. June 3, 1946, No. 16845. [Class 68 (i)] The hoist line 1 of a drag-line excavator is connected to the bucket 6 by chains 5 at a point 7 intermediate between the mouth of the bucket and its centre of gravity when full. A tipping cable, which may consist of a chain 16 and a cable 17, is attached to a lug 14 on the rear of the bucket and passes over a pulley 2 on the hoist rope 1 to be attached to the drag line 8. During hoisting, the drag line 8 remains slack and the bucket is prevented from inclining downwards to the rear by more than a few degrees by a stop 13 on the tipping cable engaging with an abutment on the hoist cable. To empty the bucket, the drag line cable is tensioned, so causing the tipping cable to exert a force on the rear of the bucket and so turn it about the axis of suspension 7. The bucket may be adapted to operate in the normal manner by disconnecting the tipping cable from the lug 14 and reconnecting it to a lug 21 on the front of the bucket, and by shifting the hoist cable attachments to stub axles 20 at the rear of the bucket. Specification 606,934 is referred to.
Patent GB-862583-A (GB)
Title: Improvements in or relating to the manufacture of alkyd resins
IPC: C08F212/14
Filed: 1957-05-28
Abstract: Non-gelled copolymers of oil-modified alkyd resins are made by copolymerizing a monovinyl aromatic compound or alpha-substituted derivative thereof, an acrylic ester of the formula CH2=CR-CO2R1 in which R represents a hydrogen atom or a C1-C4 alkyl radical and R1 represents a C1-C8 alkyl radical and a monovinyl cyanide or an alpha-substituted derivative thereof with the unsaturated chains of drying or semi-drying oil fatty acids before, during or after the production of the oil-modified alkyd resin.  Polybasic acids, polyhydric alcohols and fatty oil acids suitable for making the oil-modified alkyd resins are listed as are dialkyl fumarates and maleates which may be used as modifiers; specified resins are obtained by the condensation of: (a) linseed oil acids, pentaerythritol, trimethylol ethane, phthalic anhydride and, optionally, benzoic acids, (b) linseed oil acids, glycerine, phthalic anhydride and, optionally, pentaerythritol, (c) linoleic-oleic acids, pentaerythritol, phthalic anhydride and crotonic acid and (d) soya acids, glycerine, phthalic anhydride and dibutyl fumarate.  Vinyl aromatics specified are styrene, alpha methyl styrene, o-, m- and p-styrenes and mixtures thereof, alpha-p-dimethyl styrene, p-chloro, -fluoro and -methoxy styrene, p-trichloromethyl styrene, 2,5-dichlorostyrene and vinyl naphthalene.  Esters specified are alkyl acrylates, methacrylates and ethacrylates.  Vinyl cyanides specified are acrylonitrile, methacrylonitrile and propylacrylonitrile.  Polymerization catalysts specified are acetyl, benzoyl, lauroyl and di-tertiary butyl peroxides, cumene and tertiary butyl hydroperoxides and mixtures of benzoyl peroxide with ferrous sulphate and cumene hydroperoxide with dextrose or propylene diamine. Copolymerization may be carried out in bulk or in solution in a solvent such as naphtha or xylene with gradual addition of monomers and catalyst.  The products are used in coating applications for which purpose there may be added melamine-, butylated melamine or urea - formaldehyde resins, solvents such as a naphtha-toluol mixture, soya lecithin and pigments such as p  titanium dioxide, lampblack and organic pigments.
Patent GB-112428-A (GB)
Title: Improvements in Devices for Displaying Photographs or the like.
Inventor: BARTHELEMY EMILE
IPC: B43K29/007
Filed: 1917-11-16
Abstract: 112,428. Barthelemy, E. Dec. 30, 1916, [Convention date]. Pencil and like holders.-A medallion or photograph frame a is provided with a sheath b to be fitted on to a penholder or pencil. Spring tongues b<1>, b<2> may be provided as shown.
Patent GB-1006146-A (GB)
Title: Lead accumulator
IPC: H01M50/429
Filed: 1964-04-23
Abstract: 1,006,146. Accumulators. VARTA A.G. April 23, 1964 [April 25, 1963], No. 16942/64. Heading H1B. A lead/acid accumulator utilizes as separators swollen foils comprising a pectin/sulphuric acid gel mixed with either rubber or a thermoplastic having a softening point below the temperature of decomposition of the pectin. Polyethylene, P.V.C. or polypropylene are examples of suitable thermoplastics.
Patent GB-561593-A (GB)
Title: Method and apparatus for the filtering of producer gas
IPC: C10K1/02
Filed: 1942-11-30
Abstract: 561,593. Gas filters. INTERNATIONAL HARVESTER CO. OF AUSTRALIA PROPRIETARY, Ltd. Nov. 30, 1942, No. 17000. Convention date, Oct. 28, 1941. [Class 8 (ii)] Producer gas is delivered through a pipe 9 to the interior of a filter unit comprising beds 11, 12 of wool, cotton &c., and the cleaned gas flows out through the beds and around the unit to the outlet 35, thereby maintaining the temperature of the filter and preventing condensation. The filters, may be backed by layers 15 of felt, and a final or security filter disc 37 of felt may be provided, its lower edge being open to atmosphere to allow drainage and self cleaning.
Patent GB-783724-A (GB)
Title: Stabilized acrylonitrile polymers
IPC: C08K5/5317
Filed: 1955-06-14
Abstract: Polyacrylonitrile or copolymers of acrylonitrile with up to 80 per cent of a copolymerizable ethylenic monomer are stabilized by intimately dispersing therein from 0.01 to 10 per cent of an alkali metal, alkaline earth metal or aluminium salt of fumaric, vinyl sulphonic, vinyl phosphonic or mono-alkyl phosphonic acid in which the alkyl group has from 1 to 6 carbon atoms, for example calcium and magnesium fumarates and vinyl sulphonates and mono- and di-calcium and mono- and dimagnesium ethyl vinyl phosphonates.  Comonomers specified are vinyl esters of monocarboxylic acids having one to four carbon atoms in the molecule, vinyl, alkyl, methallyl and chlorallyl chloracetates, alkyl esters of maleic, acrylic and methacrylic acids in which the alkyl group has one to four carbon atoms, methacrylonitrile, vinyl and vinylidene chlorides, styrene, alpha-methyl styrene, vinyl pyridines and vinyl imidazole.  The polymer and the salt may be combined by admixture in the solid state or in aqueous or solvent solution or dispersion.  Solvents specified are dimethyl formamide, dimethyl acetamide, gammabutyrolactone, ethylene carbonate, maleic acid, alpha - cyanoacetamide and tris-(dimethylamido) orthophosphate.  In the examples finely divided polyacrylonitrile is added to an aqueous solution of the salt and the water then removed by evaporation.
Patent GB-200505-A (GB)
Title: Apparatus for the automatic playing of violins or other stringed musical instruments played with bows
IPC: G10F1/18
Filed: 1923-07-02
Abstract: 200,505. Aubry, E., and Boreau, G. July 8, 1922, [Convention date]. Vacuum engines.-In apparatus for playing violins &c. from a tune-sheet, the bow is mounted on a carriage c reciprocated across the instrument by two motor-bellows S', S<4>, or by connected pistons working in two cylinders. Themotors work alternately at driver and brake, and are supplied at pressures which are maintained constant during the stroke by " double pressureregulators " though variable by the tune-sheet to produce different bow-speeds. The two regulators shown diagrammatically at D<3>, D<4>, Fig. 9, each constructed as shown in detail in Fig. 11, suction being applied at-S and the pipe 27 leading to one of the bellows S<3>, S<4>. The regulator D<n> is set to maintain a certain tension and is connected by an unequal-armed lever 33 to a regulator D<1> which admits air at 30 when collapsed. The regulators D<3> D<4> are attached by links 38, 39 to a balance-lever 35 to which are connected the springs 42 of connected mechanisms 48, 51 operated by bellows 43 from the tracker-bar F, and controlling orifices 49, 52 determining the speed of the motors S<3>, S<4>. Springs 40, 41 are arranged so that the regulators D<3> D<4> act for a high and low tension respectively. The bellows-motors S<3>, S<4> are connected to the regulators D', D<4> through a reversing valve-device S<1>, comprising valves operated from the trackerbar, so that each bellows is connected with the high-tension regulator when acting as motor, and with the low-tension regulator when acting as brake. The bellows acting as brake may be connected to atmosphere by means of further valves in the device S<1> so as to produce a sudden acceleration of the bow. The motors S<3>, S<4> are connected by chains 70, 71 to cams 72, 73 shaped to compensate the varying torque of the bellows, and by further flexible connections to the bow-carriage c.
Patent GB-129642-A (GB)
Title: Improvements relating to the Manufacture of Cast Chain.
IPC: B22D25/02
Filed: 1919-07-08
Abstract: 129,642. National Malleable Castings Co., (Assignees of Bazeley, A. J.). May 4, 1918, [Convention date]. Moulding-machines; flasks; moulds; patterns. -In making moulds for casting chain as described in Specification 129,641, the patterns B and the flask 3 are modified so that the former are withdrawn first. The parts 5 are pivoted at 11 and withdrawn through holes 12, but the parts 6 are guided only by the curved holes 13 through which they are withdrawn by handles 14. During ramming, the parts 5, 6 are held by clamps 15, 16.
Patent GB-255084-A (GB)
Title: Improvements in fire extinguishing apparatus
IPC: A62C99/00
Filed: 1926-07-08
Abstract: 255,084. Kidde & Co., Inc., W., (Assignees of Freygang, W. H.). July 10, 1925, [Convention date]. Fire-extinguishing by gases; portable pressure reservoirs; sprinkling-apparatus, non-automatic. -In a fire-extinguisher of the kind containing gas or liquid under pressure and sealed by a frangible closure, the closure is ruptured by a. tubular cutter operated from a distant control station. The extinguisher a is sealed by a disc e, Fig. 3, and communicates with a distributing pipe c by way of a coupling f<1> and pipe b. Arranged in the coupling f<1> is a tubular cutter g<2> which is provided with perforations g<4> for escape of the gas or liquid and is operated by a quick thread f<3> and handle h. As shown in Fig. 1, several extinguishers a are opened simultaneously by a connecting-rod h<1>, chain h<2>, and operating member h<3>. The Specification as open to inspection under Sect. 91 (3) (a) states also that if the delivery pipe is sealed at the discharge end, a pressure may be built up in it to counterbalance the pressure in the extinguisher, and the latter pressuremay rupture the sealing disc when the pressure in the delivery pipe is relieved. This subjectmatter does not appear in the Specification as accepted.
Patent GB-403305-A (GB)
Title: Improvements in or relating to brooder houses and the like
IPC: A01K31/20
Filed: 1933-06-15
Abstract: 403,305. Ventilating brooder-houses. STEPHENS, H. W., St. Leonards Court, Upton-St.-Leonards, near Gloucester. June 15, 1933, No. 17159. [Class 137.] Brooder-houses 11 or incubators are ventilated from a covered conduit 13 over which are arranged brooders or incubators 12. Air enters the conduit 13 from the outside and is admitted to each brooder through an opening 3 controlled by a sliding damper 2 having lugs 8 to which are attached wires 7. The openings may be covered with wire gauze to prevent entry of vermin.
Patent GB-1382865-A (GB)
Title: Method of making photoconductive film
IPC: H01J29/45
Filed: 1972-04-13
Abstract: 1382865 Semi-conductor devices; image pick-up tubes HITACHI Ltd 13 April 1972 [14 April 1971] 17185/72 Headings H1K and H1D A photoconductive film 3, which may constitute the target of a vidicon tube, comprises an N type II-V compound layer 31 deposited on a transparent electrode 2 on a transparent substrate 1, and a P type layer 32 including Se and forming a heterojunction with the layer 31. Prior to deposition of the layer 32 the layer 31 is heat treated at 300-800‹ C. for 15 mins.-5 hours in an atmosphere comprising at least one of hydrogen, nitrogen, an inert gas, a Group VI element such as oxygen, sulphur or selenium, or a Group VI hydride such as water vapour, hydrogen sulphide or hydrogen selenide. The heat treatment increases and modifies the spectral sensitivity of the composite film 3. The II-VI compound for the layer 31 may be at least one sulphide, selenide or telluride of Cd or Zn, and the layer 32 preferably mainly comprises Se with additions of S, Te, Sb, Bi and/or As. The substrate 1 may be of glass and the electrode 2 of SnO2.
Patent GB-1070228-A (GB)
Title: Improvements in or relating to the preparation of organoantimony compounds
IPC: C07F9/92
Filed: 1965-04-23
Abstract: Compounds of general formula R2SbZR1, in which R and R1 are alkyl, aryl, and alkenyl, and Z is - S - or -OOC-, are prepared by reacting together compounds of the formula (R2Sb)2O and HZR1 in the presence of an inert hydrocarbon solvent, and continuosly removing water from the reaction mixture; the (R2Sb)2O being present in an amount of at least one mole per two moles of HZR1.  R and R1 may bear inert constituents which do not interfere with the reaction, e.g. nitro, halogen, ehter, aryl and alkyl groups. The inert hydrocarbon solvent is water-immiscible and has a b.p. of from 100 DEG  to 200 DEG  C., or otherwise, is a solvent which azeotropically s distills with water below 100 DEG  C. The reaction is performed at 40 DEG  to 150 DEG  C. and the reactants may be added and mixed together simultaneously, or the compound HZR1 may be added incrementally during the reaction.
Patent GB-836438-A (GB)
Title: Unsaturated polyesters
IPC: C08G63/52
Filed: 1956-11-01
Abstract: A polyester resin containing a ,b -enal groups whose copolymers have improved chemical resistance, is made by heating a dicarboxylic acid free from ethylenic unsaturation with an excess of a glycol to a temperature between 120 DEG  and 150 DEG  C. until esterification has reduced the acid number by about one half and then adding an a ,b -ethylenically unsaturated dicarboxylic acid and heating the mixture thus obtained to produce a polyester resin.  Specified dicarboxylic acids free from unsaturation are sebacic, phthalic, tetrachlorophthalic and chlorendic acids. Preferably the second stage of the reaction is effected as described in Specification 836,436. The polyester may be copolymerized with an unsaturated monomer, e.g. styrene, methyl methacrylate, vinyl acetate, vinyl toluene, diethyl fumarate or diallyl phthalate using benzoyl peroxide, methyl ethyl ketone peroxide or cyclohexanone peroxide as a polymerization catalyst. In an example, a polyester from propylene glycol, phthalic anhydride and maleic anhydride was copolymerized with styrene.
Patent GB-1342490-A (GB)
Title: Truck having a vertically displaceable carrying frame
IPC: B60P1/02
Filed: 1971-05-26
Abstract: 1342490 Platform vehicles LAGAHOLM AB 26 May 1971 [15 June 1970] 17301/71 Heading B7B In a loading truck, support frame 6 which may be raised and lowered relative to the chassis 2, is connected to the rear axle 13 by traction means, such as chains 14, such that raising of the support frame 6 compresses the rear axle springs 12 to lower the chassis rear after which the rear axle 13 is locked to the chassis 2 and the truck is backed underneath a loading platform 7 to consequently raise and support it. Each chain 14 is connected to a head 17 of a rod 18 attached to a cross piece of a U-shaped bow 21 which straddles the rear axle 13. The springs 12 are locked in their compressed condition by fork ended locking arms 25, Fig. 7, actuated by an hydraulic cylinder unit 31, and arranged to grasp the associated rod 18 below the head 17. The support frame 6 which is linked by arms 3, 4, 5 may be lifted or lowered by one or more cylinder units 33. and may be locked to the chassis 2 by clamping means 10, 11.
Patent GB-1518362-A (GB)
Title: Rotor head assembly for rotary-wing aircraft
IPC: B64C27/43
Filed: 1976-04-28
Abstract: 1518362 Helicopter rotors SOC NATIONALE INDUSTRIELLE AEROSPATIALE 28 April 1976 [14 May 1975] 17318/76 Heading B7W A helicopter rotor has a pair of diametrically. opposed blades 4, 5 which are articulated about a common flapping axis 18 extending transversely of the rotor drive shaft 6, the blades being connected by a flexible twistable one piece beam 22. The beam 22 which is formed from fibres of low modulus of elasticity coated with heat-hardened resin, is of flattened rectangular section and is received in a recess (21), Fig. 3 (not shown), 'of a plate 19 pivotally mounted on the rotor shaft about a pivot 18. A cap 23 is bolted to the plate to enclose the beam. The end of the rotor shaft is forked and the pivot 18 extends between the prongs (15) of the fork. The plate 19 and cap 23 are provided with spherical surfaces 34 which enage self-lubricating bearing rings 43 of blade-root flanges 41 to permit conicity changes and low flapping angles. Dust seals 45 are provided.
Patent GB-319595-A (GB)
Title: Improvements in metallic conduits for electrical conductors
IPC: H02G3/06
Filed: 1928-06-15
Abstract: 319,595. Shaw, W., Heptonstall, G., and Myer, B. L. June 15, 1928. Junction boxes. - In conduit systems for metallic conductors the junction box E is formed with five fixed sides c<1>, each having a central aperture. Where a conduit enters the box, a connection sleeve F is employed, the flange f<1> of the sleeve F being riveted or screwed to the conduit, the spigot end of the sleeve fitting the opening in the box.
Patent GB-437313-A (GB)
Title: Improvements in thimble tube heat exchangers
IPC: F22B13/02
Filed: 1935-05-14
Abstract: 437,313. Straight-tube heat-exchangers. SPANNER, E. F., 13, Shooters Hill Road, Blackheath, London. May 14, 1935, No. 17389 /34. [Class 64 (iii)] In a heat-ex. changer utilizing thimble tubes c hav ing a ratio of lengtl to maximum diameter of about 6 tc 1 and expanded intc a tube plate A forming a boundary of a liquid-containing chamber P, with their closed ends projecting into a passage Q traversed by liquid or gaseous heating medium, rigid metal partitions E, integral or engaging with diametral divisional plates D one in each of the thimbles, are disposed in the liquid-containing chamber so that liquid is forced to flow into, along, and out of the thimbles in each of a multiplicity of successive rows. In some forms a tube plate A forms the complete boundary of passage Q and another may form the external boundary of chamber P as in Fig. 6. One construction embodies an annular chamber P with inwardly directed thimbles in the circumferential path of Diesel engine gases. Another comprises a flat rectangular chamber P with thimbles on both sides extracting heat from dirty laundry water admitted to a surrounding passage. The thimbles may be cylindrical or conical and their ends closed by caps and plugs or by spinning in or welding. Fins or gills, e.g. thin perforated plates sliding over a section of the tubes, may be provided.