baber/WOPTO huggingface dataset:
Patent GB-672924-A (GB)
Title: Improvements in luminairs
IPC: F21V13/04
Filed: 1949-05-20
Abstract: 672,924. Lighting fittings. HOLOPHANE, Ltd., ENGLISH, S., and HOLMES, J. G. May 19, 1950 [May 20, 1949], No. 13550/49. Classes 75(ii) and 75(iv) A luminair has an elongated light source 1 arranged between two opposed beamforming trough-shaped reflectors 2, 3, each extending on both sides of the principal planes of the two reflected beams and having an elongated beam-forming refractor 12 or 13 respectively within its angular aperture. The reflectors 2, 3 may be of metal, glass or plastic material shaped parabolic in cross-section and may abut on a chord of truncation which passes through the light source 1, the latter being coincident with the focal lines of the two reflectors. The refractors 12, 13 may be of glass, plastic or other transparent material and formed the same depth as, and positioned equidistant from, the chord of truncation of the reflectors, their section being such as to provide either parallel beams whose axes may be coincident with those of the reflector beams, or non-parallel beams. The reflectors 2, 3, may be arranged to include an angle of 180 degrees, or slightly less than 180 degrees as shown to give downwardly inclined beams. To intercept rays not incident on the reflector or refractor systems, an absorbing or reflecting surface 15 may be provided within the reflector mouth. The reflector openings may be closed by a plain or light-diffusing cover which may be mounted in front of the refractors 12, 13 or may be formed as extensions thereof.
Patent GB-354198-A (GB)
Title: Improvements in or relating to the concentration of dilute aliphatic acids
IPC: C07C51/42
Filed: 1930-05-02
Abstract: Acetic, propionic, and other aliphatic acids are extracted from their aqueous solutions by means of solvents comprising at least one ether of a monohydric phenol such as the methyl, ethyl and propyl a -naphthol ethers, the methyl, ethyl, propyl, isopropyl, and paratolyl b -naphthol ethers, the cresyl ether, anisol, phenetol, and phenyl ether.  The solvent may be mixed with the aqueous acid and the extract fractionally distilled, or the vapour of the dilute acid may be passed through the solvent at a temperature at which the water remains in the vapour form, for instance in countercurrent in a fractionating column into which the solvent is admitted as a stream or spray, or the vapour of the dilute acid may be mixed with the vapour of the solvent, the mixture being then cooled to condense the acid while leaving the water in vapour form.  The solvent is preferably circulated between an absorption and a distillation zone, and the absorption zone may be at ordinary or raised temperature such as 50-90 DEG  C.
Patent GB-1243098-A (GB)
Title: Production of glass-fibre reinforced phenolic resin composites
Inventor: MORRIS CAROLYN ETHEL MARY
IPC: C03C25/26
Filed: 1969-03-14
Abstract: 1,243,098. Glass fibre-phenolic resin laminates. IMPERIAL CHEMICAL INDUSTRIES Ltd. 24 Feb., 1970 [14 March, 1969], No. 13576/69. Heading B5N. [Also in Divisions C3 and D1] A glass fibre reinforced phenolic resin composite is produced by moistening the glass fibres with a wetting promoter which is an organic compound having the formula CH 3 X in which X is -ROH, -RY or -COR<SP>1</SP>, R is a direct link or an alkylene group having 1-3 carbon atoms, R<SP>1</SP> is an alkyl group having 1-4 carbon atoms and Y is phenyl or o-aminophenyl, forming them into a composite with the uncured phenolic resin composition and curing the resin. The phenolic resin may be of the novolak kind prepared by reacting excess phenolic compound with formaldehyde in acid conditions or of the acid-curable resole kind prepared by reacting excess formaldehyde with phenolic compound under basic conditions. Specified wetting promoters are methanol, isopropanol isobutanol, acetone, methyl isobutyl ketone, toluene, cumene and o-toluidine. The glass fibres may be in the form of individual fibres, bundles or strands of fibres, rovings, woven or non-woven textiles or chopped fibres, and may be wetted with the wetting promoter by immersion, spraying or passage through vapours of the promoter so that not more than 50% by weight of the promoter is applied to the fibres. If the uncured resin composition is in the form of a nascent foam composition the wetting promoter used is preferably one which when used to moisten a flat surface of E glass gives a contact angle of 10-20 degrees between a drop of nascent foam composition and the E glass. The uncured resin composition may contain pigments, dyes, heat and light stabilizers, lubricants and fillers. In examples sheets of glass tissue or aligned glass fibres are sprayed with wetting promoter and placed in a mould and phenolic resin foam composition containing a non-ionic surface active agent, 1,1,2 - trichloro - 1,2,2 - trifluoroethane or n - pentane, hydrochloric acid and glycerol poured on, further layers of glass tissue or aligned glass fibres and foam composition applied and heat applied to cause the composition to foam and set.
Patent GB-1123394-A (GB)
Title: Al-alo structures and process for obtaining same
Inventor: ITALIAN DANTE GUALANDI
IPC: B22F9/00
Filed: 1966-03-28
Abstract: Al-Al2O3 powder is prepared by a process comprising the steps of pulverizing highpurity aluminium and then grinding the powder in the presence of oxygen and a silicone as a lubricating or grinding agent to achieve partial oxidation to Al2O3.  The process if carried out at ambient temperature and in air, and the powder thus obtained may be sintered and extruded to produce a tube.  Hyper-pure aluminium of 99.99% grade or pure aluminium of 99.9% grade is comminuted to a powder of less than 0.005% by weight impurity, and the powder is then subjected to controlled oxidation by grinding in air at ambient temperature in mills constructed of aluminium or its alloys until the desired percentage of Al2O3, between 2 and 20%, has been obtained.  A single quantity of silicone, 0.3% by weight, or successive quantities, is added in the grinding stage.  The powder is cold-compressed (pressure of the order of 2t/cm2), followed by sintering and hot de-gassing (at 550-625 DEG  C., in a vacuum oven with a residual pressure of the order of 10-2-10-5 mm of Hg for 10-30 hours) and then hot compressed (at 600 DEG  C. with a pressure of 5t/cm2) followed by at least one extrusion operation.  The product is characterized by containing 2-20% of Al2O3 and an impurity content of less than 0.05% of Fe, less than 0.1% of C, and less than 5ppm of H2.
Patent GB-902809-A (GB)
Title: Polypropylene composition
IPC: C08L23/04
Filed: 1961-04-14
Abstract: A composition comprises a homogeneous admixture of polypropylene and a copolymer of ethylene and an alkyl ester of acrylic acid or of a simply substituted acrylic acid such as methacrylic acid.  The compositions find application as film, pipe and fibres.
Patent GB-480154-A (GB)
Title: Improved process for the manufacture of porous building materials
IPC: C04B28/02
Filed: 1937-05-14
Abstract: A soap which is insoluble or substantially insoluble in water is added to a mortar comprising (1) cement, (2) one or more water-absorbing materials (e.g. moler, asbestos, hair, vegetable fibres, sawdust, peat powder), (3) sand or gravel or like inert filler, and (4) water in excess of the amount of water to be bound by the cement, which is then stirred, moulded and allowed to set. The soap may be a resinic soap of calcium, aluminium or other metals, or a mixture of such soaps.  Thus, burnt lime slaked with an ordinary potassium or resinic soap and mixed with a solution of calcium chloride in water and with aluminium chloride is added to a mortar comprising (parts by weight) cement 100, moler 200, sand 75, water 200.  To the soap before addition may be added inorganic salts, e.g. of aluminium or the alkaline earth metals, and colouring matter.
Patent GB-947330-A (GB)
Title: Improvements in or relating to transformers
IPC: H01F19/02
Filed: 1961-04-17
Abstract: 947,330. Transformers. REPED ITALIANA S.p.A. April 17, 1961 [April 19, 1960], No. 13843/61. Heading H1T. In order to obtain a linear response over a wide range of frequencies a transformer cornprising a plurality of coaxially arranged coils, each coil having a plurality of cylindrical layers has in between each pair of adjacent layers of the coil a layer of conductive or semi-conduotive material which is completely insulated from earth and from the coils, and is open circuited (Fig. 4, not shown) to avoid " short circuited " currents therein. The conductive layer(s) may be of metallized paper, metallized powder mixed with impregnating compound, tin foil or metallized paint on insulating material and be a single broad layer or a number of stripes 12 13, 14 (Figs. 2, 3). In one construction of transformer there are sixteen primary coil layers 20 1  . . . 20 16  (Fig. 5) and four secondary coil layers 21 1  . . . 21 4  with conductive layers 27 and paper sheets 26 between coil layers Electrical and constructional data of two similar intervalve transformers are given, one trans former having paper only between layers and the other metallized paper. Comparative curves of linear response are also given (Fig. 8, not shown).
Patent GB-831553-A (GB)
Title: Improvements in or relating to cylindrical electrical condensers
IPC: H01G13/00
Filed: 1957-05-01
Abstract: 831,553. Capacitor casings. TELEGRAPH CONDENSER CO. Ltd., and SPORING, P. A. April 9, 1958 [May 1, 1957], No. 13849/57. Class 37. A cylindrical capacitor 1 is encased by winding about the capacitor curved surface one or more turns of a synthetic plastic strip 2 which softens when heated, the strip edges extending beyond the capacitor ends; softening these edges by heat; and turning them inwardly by a spinning operation to form a closure for each end of the capacitor casing. The capacitor, which is spirally wound, has connecting wires 4 threaded through bores 5 on the spinning tools 3 which are heated, electrically or by gas jet, to soften the synthetic plastic. Cellulose acetate, polyvinyl chloride, polythene or polyethylene terephthalate are suitable plastics. The closures may be inherently fluid tight; alternatively they may be rendered so by wax impregnation.
Patent GB-790208-A (GB)
Title: Improvements to television cameras
IPC: G03B19/18
Filed: 1954-05-12
Abstract: 790,208. Lens turrets. SOC. NOUVILLE DE L'OUTILLAGE R. B. V. ET DE LA RADIO-INDUSTRIE. May 12, 1954 [May 27, 1953], No. 13909/54. Class 97(1) [Also in Group XL(b)] The lens turret 30 of a television camera is rotated by means of hollow shaft 108 extending to a handle 80 at the rear of the camera and includes a gear assembly 153, Figs. 3-5 (not shown), actuated by a shaft 116 extending through hollow shaft 108 to a knob 117, whereby the diaphragm settings of all the levers on the turret may be adjusted simultaneously. Shaft 116 may also be rotated by an electric motor 88 controlled remotely. Motion of shaft 116 is communicated to a potentiometer 119 which is connected in circuit with a milliameter calibrated to give a reading indicating the diaphragm setting. A detent mechanism 96, 100, 101, 103 released by pressure on a rear portion 82 of handle 80 is provided to ensure positive angular positioning of the turret. The turret together with the gear assembly is detachable'from the camera by releasing a spring- loaded wing nut 189.
Patent GB-352147-A (GB)
Title: Improvements in fabric piece boards
IPC: B65H75/06
Filed: 1930-05-06
Abstract: 352,147. Fabric piece boards. DE ANGELI FRUA, SOC. PER L'INDUSTRIA DEI TESSUTI STAMPATI, Piazza de Angeli, Milan, Italy. May 6, 1930, No. 13947. Convention date, May 20, 1929. [Class 42 (ii).] A piece board comprises longi. tudinal wooden bars 1, 1<1>, intermediate wooden bars, and metal end pieces 3 which embrace and are secured to the longitudinal members by stamped-out parts 5 bent to engage their inner edges and by parts 4 forced into the wood. The end pieces may bear printed matter, while their edges 3<1> are bent inwardly to avoid cutting-edges.
Patent GB-1172882-A (GB)
Title: Use of Composite D.C. Power in Anodic Protection
Inventor: FOROULIS ZISIS ANDREW
IPC: C23F13/00
Filed: 1967-03-28
Abstract: 1,172,882. Automatic control systems for anodic passivation. ESSO RESEARCH & ENG. CO. March 28, 1967, No.13997/67. Heading G3R. An anodic passivation system to prevent corrosion of a bayonet heater 32 immersed in acid 34 comprises a cathode 33, reference electrode 39, a D.C. source 31, a potentiostat 30 and a voltage responsive contactor 42, 44, the settings of members 30, 42 being such that members 30, 31 are parallel connected to supply the current necessary to bring the heater 32 to a potential corresponding to slow or instantaneous passivation, Fig.1 (not shown), after which the contacts 44 open to disconnect the source 31 and the potentiostat 30 supplies the reduced current necessary to maintain the passive condition of the heater 32, i.e. to maintain the potential between members 32, 39 in a predetermined range. The above cycle is repeated should contacts 44 reclose as a result of altered conditions at heater 32, e.g. changes of temperature and solution concentration. The system may be simplified by replacing members 42, 44 by a conventional non-automatic switch, Fig.2 (not shown). A typical application of the invention using a conventional D.C. source and potentiostat is described for steady state (slow) operation to bring the heater into the passive potential range.
Patent GB-1029545-A (GB)
Title: Thermo-responsive fluid flow control valve assemblies
Inventor: SMITH MARK
IPC: G05D23/02
Filed: 1963-04-09
Abstract: 1,029,545. Valves. GENERAL MOTORS Ltd. March 26, 1964 [April 9, 1963], No. 14026/63. Heading F2V. A thermally actuated valve suitable for use in the cooling system of an engine comprises a valve plate 4 biased by spring 14 into contact with a seat 7, the valve plate being crimped at 27 to one end of a bush 18, the other end of which is secured to the movable housing 10 of a thermally responsive unit 3. A resilient sleeve 20 within the housing surrounds one end of a pin 22, the other end of which enters an oversize recess 29 in a screw 30. The space between the inner wall of the housing and the sleeve is filled with wax. The flange 11 of the valve plate co-operates with the seat to allow only a gradual increase in flow during opening to obviate hunting, the latter effect also being reduced by the bush 18 which acts as a heat sink. A jiggle pin 32 allows a limited flow through the valve plate.
Patent GB-355314-A (GB)
Title: Improvements in, or relating to, tiles for walls, fireplaces and like purposes, and other earthenware articles of a similar character
IPC: E04F13/14
Filed: 1930-05-08
Abstract: 355,314. Tiles for fireplaces and walls. ADAMS, T. W., Carr House, Moss Grove, Kingswinford, Staffordshire. May 8, 1930, No. 14105. [Class 87 (i).] Tiles secured to a backing of cement by a block engaging an undercut groove in the rear face and projecting back into the cement have the groove B tapered so that the block C jams in it, preferably at about the middle. The block C may be splayed out rearwardly. In building up a fireplace the tiles are laid face down on a slab of slate with the blocks C projecting upwards, after which cement is run over and allowed to set.
Patent GB-482083-A (GB)
Title: Improved method of charging water-logged bore-holes with blasting cartridges and fuzes
IPC: F42B3/00
Filed: 1937-05-21
Abstract: 482,083. Blasting - cartridges. ROBERTS, R. I. May 21, 1937, No. 14124. [Class 9 (i)] A blasting-cartridge comprises a charge of blasting powder in an envelope a of rubber or like stretchable waterproof material, the mouth c of which is sealed after the insertion of the charge. For the priming cartridge, a fuze d is inserted through the mouth of the envelope, tied therein by a ligature e, and sealed with tallow f.
Patent GB-438041-A (GB)
Title: Improved manufacture of embossing rollers particularly for producing lenticular films
IPC: B44B3/04
Filed: 1934-05-10
Abstract: 438,041. Embossing-rollers. GROVES, W. W., 30, Southampton Buildings, Chancery Lane, London.-(I. G. Farbenindustrie Akt.- Ges.; Frankfort-on-Main, Germany) May 10, 1934, No. 14146. [Class 100 (ii)] [See also Group XXII] A method of making an embossing-roller for use in the production of lenticular films having transverse embossments comprises forming grooves corresponding with the desired embossments on the internal surface of a hollow cylinder, bypassing through the cylinder a ring having a suitably grooved periphery and a diameter slightly larger than the internal diameter of the cylinder, and then preparing from the grooved interior of the cylinder a reproduction serving for the embossing-surface of the roller. The reproduction, which may be made by electrodeposition, may be strengthened by metallic inserts, and a non-adhesive separating layer between the grooved cylinder and the reproduction ensures separation without damaging the latter. The ring R which is to be passed through the cylinder Z may be formed with grooves by engraving, or may be wound with wire D which is passed round pins Nu, No projecting from each face of the ring, and the core E of the ring is provided with a rectangular opening F for engaging a guide bar A on which the ring slides during the impression of the cylinder. The latter is preferably formed in two semi-cylindrical pieces and has a thin electrolytically deposited lead coating on its inner surface. A reproduction of the grooved inner surface of the cylinder Z is made by electrodeposition and the cylinder Z is removed by separating the semi-cylindrical parts.
Patent GB-207479-A (GB)
Title: Improvements in sifters or "dredgers" for powdered or granular material
IPC: A47G19/24
Filed: 1923-05-29
Abstract: 207,479. Pascall, F. May 29, 1923. Powder distributors. -In a sifter or distributor for powdered or granular material of the kind having discharge apertures normally closed by gravity valves or stoppers which open when the device is inverted, or tilted, the valves or stoppers d are connected by a cross bar e for simultaneous movement on the plain part f<1> of a screw or pin f mounted in the top of the receptacle and adjustable by a knob g to control the opening of the valves.
Patent GB-983598-A (GB)
Title: Improvements in or relating to the control of printing drums
IPC: H04N5/04
Filed: 1962-04-12
Abstract: 983, 598. Electric selective signalling. POTTER INSTRUMENT CO.Inc. April 12, 1962 [April 26, 1961], No. 14220/62. Heading G4H. A high speed printer comprises a number of type rings together forming a type drum 1. The drum is driven continuously and carries a tone wheel 5 which has teeth such that a clock pulse is developed by pick-up 11 each time a new character is positioned beneath the printing hammers 7 (only one shown). The tone wheel has an additional tooth which provides a "start" pulse during the printing cycle. The start and clock pulses are separated by unit 60, Fig. 3 (not shown), and are used in unit 35 to control the type hammers, this unit being fed with positional data from an external source. Pressure sensitive paper is used.
Patent GB-378507-A (GB)
Title: Improvements in or relating to one-revolution clutch mechanism for telegraph apparatus
IPC: H04L13/04
Filed: 1931-05-14
Abstract: 378,507. Operating clutches. CREED & CO., Ltd. and SALMON, R. D., Telegraph Works, Croydon. May 14, 1931, No. 14253. [Class 80 (ii).] In one-revolution clutch mechanism for start-stop telegraph receivers in which a member actuated by a relay responsive to successive elements of received signals releases the clutch on receipt of the first element of a series of impulses and actuates selecting- mechanism in accordance with the character of succeeding permutation impulses, a spring- biased clutch-controlling detent is tripped by the relay to release the clutch and, on commencement of the resulting rotation, is mechanically returned to the clutch-arresting position, being thereafter out of operative relation with the relay. A clutch trigger 2 is engageable by a detent 3, which is pivoted at 4 and biased by a spring 5 to the release position against a stop 6 except when held by a spring-pulled latch 7 coacting with a fixed part 8. On the operation of the relay-magnet, acting through a link 13 and rock-shaft 12, a release-member 11 acts on a lug 10 to disengage the parts 7, 8, so throwing in the clutch 1, which rotates a cam 14. A bell-crank lever 15, 17 is then cammed out of a depression 19 and acts by a projection 18 to position the detent 3 for declutching at the end of the revolution. Until the revolution is nearly completed, the projection 18 holds the detent far enough forward to keep the lug 10 clear of the member 11, which bears under a spring 21 against a stop 20. By this means, reciprocations of the member 11 caused by oscillations of the rock-shaft 12 to actuate selecting-mechanism during rotation of the clutch are not impeded by the load of the spring 5. The member 11, if depressed at the instant of declutching, will be slightly swung aside by the lug 10. Adjustment of the spring 5 by a screwed head 22 varies the delay-period between the starting-impulse and clutch engagement. Specification 245,149, [Class 40 (iii), Telegraphs, Electric], is referred to.
Patent GB-366828-A (GB)
Title: Improvements in or relating to gas controlling devices
IPC: G05D16/06
Filed: 1931-05-14
Abstract: 366,828. Safety cut-off valves. CANNER, E., 14, Wynfield Road, and POOLEY, H., 32, Victoria Park Road, both in Leicester. May 14, 1931, No. 14256. [Class 135.] A safety cut-off gas valve opened by means of a pull rod j and maintained open by outlet pressure acting on a diaphragm e has a conical valve member h co-operating with a conical seat g. The inlet passage b opens into the side of the valve seat and the valve member is provided with an outlet port i. In a modification an ellipsoidal lift valve member co-operates with a corresponding seat having an inlet at the bottom. According to the Provisional Specification a solid, hollow or ported piston valve may replace the conical valve. Specification 353,681 is referred to.
Patent GB-680777-A (GB)
Title: An improvement in or relating to fire extinguishers
Inventor: ANDERTON SIDNEY FERNARD
IPC: A62C13/00
Filed: 1950-06-08
Abstract: 680,777. Fire-extinguishing. NU-SWIFT, Ltd. June 8, 1951 [June 8, 1950], No. 14259/50. Addition to 629,072. Class 47(ii) In a fire-extinguisher as claimed in the parent Specification in which a liquid is expelled from an outer container by compressed gas or a gas generating substance housed in the upper part e of an inner container a the lower part of which contains a foam generating or other agent, the latter is enclosed in a flexible bag j to protect the container a from corrosion. The bag j is arranged between pads g, i which when the gas is released are forced downwards so that the gas can pass through an opening g<SP>2</SP> and so that the bag is ruptured by engagement with a serrated opening h<SP>1</SP> in the container a after the pad i has been forced therethrough.
Patent GB-814371-A (GB)
Title: Improvements in and relating to pneumatic tyre and wheel assemblies
IPC: B60C29/06
Filed: 1956-05-08
Abstract: 814,371. Inflating pneumatic tyres. MORRISON, A. W. May 8, 1956, No. 14272/56. Class 144 (2). A pneumatic tyre 7 mounted on a rim 6a of a wheel is maintained at the desired inflation pressure by means of a reservoir 5 which contains air at a higher pressure than the said inflation pressure, and which forms part of, or is carried by, the wheel 6, the reservoir communicating with the tyre via a reducing valve 9 which permits flow of air into the tyre on a fall in the inflation pressure. Fig. 2 shows the reservoir 5 as an annular integral part of the wheel 6 with the outer periphery of the reservoir forming a well-based rim 6a, a non-return valve 8 being provided for charging the reservoir 5 with air. The reducing valve 9 may be accessible from outside the reservoir for relieving the pressure in the tyre as shown in Fig. 4, the valve serving also for charging the reservoir, via an orifice 9a and being connected by a conduit to the tyre. Fig. 9 shows the reservoir as a separate annulus detachably carried in a recess 20 in the wheel disc periphery.