baber/WOPTO huggingface dataset:
Patent GB-1421067-A (GB)
Title: Heat transfer compositions
IPC: C08K7/12
Filed: 1973-05-31
Abstract: 1421067 Coated products AMCHEM PRODUCTS INC 31 May 1973 [31 May 1972] 26015/73 Heading B2E [Also in Division C3] A heat transfer composition in pre-shaped taped form comprises a release sheet to which is strippably adhered a thermo-setting, plastic material, which comprises 15-16% by weight of one or more particulate solids having a thermal conductivity of at least 100 Btu/in/hr/sq. ft./‹F, dispersed in the thermo-setting plastic material, from 15-40% by weight of an epoxy resin, and from 1-15 parts by weight of a cross-linking agent per 100 part by weight of epoxy resin. Suitable particulate solids are metals such as copper, aluminium, iron and various steels, metal compounds such as zirconium carbides, and graphite. The particles may consist of various proportions of "relatively coarse" particles such as all the particles pass through 20 mesh but less than 25% through 200 mesh and "relatively fine" particles, that is in which more than 75% passed through 200 mesh. Relatively coarse particles preferably make up 5-40% by weight of the heat transfer material and the relatively fine particles 5-40% of the heat transfer material. The preferred crosslinking agent is dicyandiamide. A binder, e.g. a nitrile rubber, and a tackifier such as a polyalkene, e.g. polybutene, may also be present in the compositions. A thickener such as a fibrous material, e.g. asbestos fibre is also preferably included in the composition. The backing may be a commercially available release paper. An exemplified composition comprises 28.51 parts of an epoxy resin of epoxide equivalent 185- 195, obtained from epichlorhydrin and bisphenol A, 7.98 parts nitrile rubber crumbs, 16.45 parts electrode grade graphite (1% on 20 mesh, 20% through 200 mesh), 27.41 parts electrode grade graphite (1% on 100 mesh, 82% through 200 mesh), 12.72 two parts polybutene of molecular weight 1900-2500, 5.92 parts asbestos fibre and 1.10 parts dicyandiamide.
Patent GB-1309665-A (GB)
Title: Stabilisation of plasma generators
IPC: H05H1/34
Filed: 1970-05-29
Abstract: 1309665 Liquid stabilized plasma generators LONZA Ltd 29 May 1970 [10 June 1969] 26080/70 Heading H5H A liquid stabilized plasma generator, with a sectioned flow channel constricted at the transitions from one section to the other and with liquid supplied at each of the flow path sections, is improved by the stabilizing liquid being divided in each section into at least two partial streams, one of which is discharged from the section in the vicinity of the constriction through a narrow space extending to the vicinity of the inner surface of the liquid vortex. The other partial stream flows through the whole channel. Divisions 8 and partitions 9 from discharge spaces which widen into collecting channels, and a partial stream is drawn off via outlets 17 and fed back by pumps 31 through heat exchangers 32 to inlets 16. The partial stream flowing through the whole channel is fed in through the inlet 18 controlled by flow regulators 24, 25, or inlet 18 controlled regulators by 33, 34. Liquid is fed in at an inlet 19 between diaphragms 7 and an annular member 6 adjacent the electrode 1, and is drawn off through an outlet 20 with any electrode burning products. Gas or steam can be fed in between the diaphragms 7. At the outlet nozzle 12, the non-recirculated stabilizing liquid is drawn off via outlet 15 between division 10 and partition 11, together with the peripheral portion of the plasma gas and cooling liquid supplied at inlet 14. The division 10 may be replaced by a division 39, Fig. 3 (not shown), and a further partition 9 to provide for further liquid recirculation. A rotating electrode 43, Fig. 5, may be used in the generator (see also Figs. 6, 7, not shown). A plurality of stabilizing chambers may be connected axially in series, Fig. 8 (not shown), with electrode chambers provided at both ends with inlets 21 and outlets 20. Different stabilizing liquids may be separately employed in the generator of the invention.
Patent GB-419114-A (GB)
Title: Improvements in or relating to key-operated electric tumbler switches
IPC: H01H27/08
Filed: 1933-09-22
Abstract: 419,114. Tumbler switches; handles. LUNDBERG & SONS, Ltd., A. P., and PEGG, G., 477, Liverpool Road, Holloway, London. Sept. 22, 1933, No. 26182. [Class 38 (v).] A key-operated tumbler switch has the key so formed that it can only be inserted and removed when the switch is in a predetermined position. As shown applied to a two-position tumbler switch, the operating rocker 11 has an upper extension 13 provided with slots 17, 18 into which fit prongs 21, 22 of an operating key 23. The key projects through a slot 25 in a cap 19 formed on the bridge 15 and the edge 24 of the slot engages a notch 27 in the key when in the on position to prevent withdrawal of the key. If the key is inserted wrong way round the switch cannot be operated. In a modification for a three position switch having a central off position, the key is formed with a notch on each side so as to prevent removal except in the central off position. The slot in the bridge cap may be arranged so as to permit removal of the key only in the on position.
Patent GB-1130946-A (GB)
Title: Improvements in a sealed bushing and wall member assembly and method of making the same
IPC: H01B17/30
Filed: 1966-06-13
Abstract: 1,130,946. Carrying conductors through partitions; bushing insulators. GENERAL ELECTRIC CO. 13 June, 1966 [7 July, 1965], No. 26212/66. Headings H2C and H2E. Bushing 10 is sealed to wall 14 by a layer of elastomer. The frusto-conical surface 18 of the bushing is seated in the frusto-conical flange 26, and the edge 16 is spun or rolled over the shoulder 12. A band of uncured elastomer, originally present in and projecting from groove 30, is squeezed in assembly between the conical surface 18 and the flange 26 to make a continuous layer between them. Alternatively the layer 28 may be placed on surface 18 before assembly. The elastomeric material is then cured. Seals of this kind are stated to be resistant to temperature change and mechanical stress and to be suited for use in transformers &c.
Patent GB-361456-A (GB)
Title: Improvements in valve mechanism for moulding machines
IPC: B22C15/10
Filed: 1930-09-02
Abstract: 361,456. Valve gear for moulding-machines. RINGLE, R. F., Beaver Road, Zelienople, Pennsylvania, U.S.A. Sept. 2, 1930, No. 26225. [Class 122 (ii).] Combined fluid-actuated and mechanical gears.-A machine for jarring a mould comprises a cylinder 4 and a plunger 5 therein connected to a table 12 with a part 14 thereof normally resting on a jarring plate 10 supported on fibre, cork, &c. on a middle floor 8 above the main base 2. Adjacent the bottom of the cylinder is a valve-chest with supply and exhaust passages 43, 27 containing a double-beat valve 20 which alternately puts the cylinder port 3 to supply and exhaust. The valve has a hollow stem carrying an auxiliary piston 35. The upper side of this piston is alternately put to pressure and exhaust to reciprocate the valve by means of an inner telescopic auxiliary valve 19, the upper and lower ends of which have exhaust and supply bores 48, 37 respectively connected by ports with circumferential grooves which effect the distribution. The valve 19 is pressed constantly against a tappet 17 carried by the reciprocated table 12.
Patent GB-958552-A (GB)
Title: A device for producing longitudinal weld seams on a thermoplastic tube
IPC: B65B9/213
Filed: 1962-07-09
Abstract: 958,552. Seaming non-metallic sheet material. HAMAC-HANSELLA A.G. July 9, 1962 [Oct. 11, 1961], No. 26236/62. Heading B5K. A device for producing a longitudinal welded seam 6 on a thermoplastic tube 4 comprises a heatable welding member 2 to press the material to be welded against a backing member 3 whilst a heat-resisting layer 1 is interposed between the member 2 and the tube 4, the layer 1 consisting of a flexible strip secured at its opposite ends to the respective ends of the member 2 but is otherwise free to move with respect to the member 2 so that after the seam 6 has been welded by the member 2 the latter can be withdrawn, leaving the layer 1 temporarily in contact with the seam 6 during cooling thereof. The tube 4 is formed around a former 3 and is moved intermittently downwards. The layer 1 is preferably made of polytetrafluoroethylene and is attached at its upper and lower ends to the member 2. After cooling of the welded seam 6 the tube 4 is pulled downwardly and the layer 1 peels off. The member 2 may be heated continuously or intermittently by electrical resistance and may be thermostatically controlled. A blower to assist cooling of the seam 6 may also be provided.
Patent GB-978581-A (GB)
Title: Polyethylene container
Inventor: BROWNE JOHN ALFRED DAVID
IPC: B29C39/00
Filed: 1962-07-09
Abstract: 978,581. Plastic containers; trays; baths and basins. BRITISH XYLONITE CO. Ltd. Oct. 9, 1963 [July 9, 1962], No. 26250/62. Headings A4A and A4N. [Also in Division B5] A container such as a bath, sink, tank, tray or box comprises superposed layers respectively coloured and plain high density or low density polythene, the former layer, which may be coloured with carbon black as protection against U.V. or with other pigments for decorative or identification purposes, being the exposed layer i.e. the external layer of a box or tank or the inner layer of a bath &c. The container may be made by heating polythene granules in a female mould until a layer of desired thickness forms on the mould, removing excess granules, introducing other granules and repeating the process, one batch of granules being plain and the other coloured. Heating may be in an oven or by radiant, convected or conducted heat. As shown a fish box having a neck which is narrower than the body is made by the above method in a two-part mould 23, 24, the part 23 having a welded-on locating flange 25 and a peripheral flange 28 supported on brackets 26 and engaged by screw means 31, 32, 34 on a flange 29 supported on brackets 27 on the part 24, to hold the parts together.
Patent GB-243882-A (GB)
Title: Improvements relating to a grip for cords, ropes and the like
IPC: E04H15/32
Filed: 1924-11-04
Abstract: 243,882. Duerden, J. H. Nov. 4, 1924. Cleats.-A device for locking looped cords &c. comprises a member formed with open-sided apertures a, a<1>, and an eyelet a<2> for attaching to it one end of the cord, a portion of the cord being passed through one aperture a', twisted over the member and passed through the other aperture a. The eyelet a<2> may be replaced by a hook &c. and more than two open-sided apertures may be provided. In one form the device is constructed from a length of wire.
Patent GB-702729-A (GB)
Title: Improvements relating to magnetic separators
IPC: B03C1/247
Filed: 1952-10-20
Abstract: 702,729. Magnetic separators HOGANASBILLESHOLMS AKTIEBOLAG. Oct. 20, 1952 [Oct. 20, 1951] No. 26274/52. Class 117 An electromagnetic separating drum is energised from poly-phase A.C. to provide a moving field travelling with or against the direction of rotation of the drum. The drum comprises a plastic or rubber sleeve 31 enclosing dynamo-ring laminations 3 assembled on a spider 9 and having windings arranged in peripheral slots 5, and energised through slip-rings (not shown). The material to be separated is fed into a hopper 32 and drops on to the drum. The magnetic components are oscillated and moved by the travelling electromagnetic field which loosens the material without releasing the magnetic components. Non-magnetic material drops off the drum and may be assisted by a blower 46. Dust is removed by a suction head 43. The magnetic material may be removed by a brush 35. Modification.-Instead of enclosing the drum in a plastic sleeve, it may form a pulley for a non- magnetic conveyer belt Fig. 3 (not shown).
Patent GB-224848-A (GB)
Title: Process for the production of thin films of cellulose derivatives
IPC: C08L1/08
Filed: 1923-08-08
Abstract: The manufacture of very thin films of cellulose derivatives, particularly cellulose esters and ethers, described in the parent Specification, is modified by employing a base which is soluble or slightly soluble in the solvent used in the preparation of the soution of the cellulose derivative from which the film is made, and the film is removed from the base before the solvent has completely evaporated, that is, as soon as possible after solidification, or alternatively, the cellulose derivative is applied to the base in the form of a highly-concentrated viscous or pasty solution. Suitable bases are cellulose acetate and other cellulose derivatives, indiarubber, a rubberized fabric, gelatine, etc.; and to the base or to the solution may be added substances such as glycerine, a glycerine derivative or a mineral oil, which serve to decrease the adhesiveness of the film to the base. Layers of solutions of different cellulose derivatives may be spread one on the other; after drying, the layers can be separated. According as the base has a smooth or patterned or ornamental surface so the film will be plain or ornamented.
Patent GB-1469716-A (GB)
Title: Monitoring of the operation of flexible hose
IPC: B63B27/24
Filed: 1974-06-13
Abstract: 1469716 Monitoring a flexible hose TREG SpA 13 June 1974 [13 June 1973] 26352/74 Heading G1S [Also in Division F2] A flexible hose 4 having a reinforced elastomeric wall is monitored by filling passages 6 in the hose wall with a fluid and monitoring the pressure of the fluid. As shown in Fig. 1, a floating terminal for connection to an oil tanker is connected to a sea-bed oil pipe by a flexible hose 2 made up of hose sections 4 joined by flanges 5. Each hose portion is made up of many layers Fig. 2 (not shown) which together define inner and outer walls a, b connected by a reinforcing spiral the space between the turns of the spiral forming the passage 6 which is itself spiral. The passages 6 of the sections 4 may be connected in series by pipes 7, the passage of the upper section being connected to pressure gauge 3. Alternatively the passage 6 of each section may be connected to a respective pressure gauge. Observation of the gauge may be used to detect rupture of either or both of the walls a, b, or to detect on impact on the hose.
Patent GB-1215428-A (GB)
Title: Fibre optical system
IPC: G02B6/06
Filed: 1969-05-23
Abstract: 1,215,428. Fibre optic devices. ERNST LEITZ G.m.b.H. May 23, 1969 [July 1, 1968 ], No.26400/69. Heading G2J. A central bundle 2 of narrow high resolution optical fibres is surrounded by bundles 3 of normal fibres. In an alternative arrangement, a central hexagonal bundle of narrow fibres is surrounded by eighteen hexagonal normal fibre bundles.
Patent GB-303221-A (GB)
Title: Improvements relating to electric protective arrangements
IPC: H01F38/28
Filed: 1927-10-08
Abstract: 303,221. British Thomson-Houston Co., Ltd., Wellings, J. G., and Mayo, C. G. Oct. 8, 1927. Addition to 227,910. Transformers.-Relates to balanced protective systems of the circulating current type wherein, as in the parent Specification, incorrect operation due to faulty characteristics of the current transformers (which occurs particularly with heavy straight-through currents) is avoided by arranging that the circulating current in the secondary of one of the transformers produces a flux which neutralizes that due to its primary winding so that the effect on a tertiary winding on this transformer (connected with the protective relay) is normally nil. According to the invention, the balancing features of the systems are improved by producing a normal flux in different parts of the transformer carrying the relay-operating winding. In the arrangement shown in Fig. 1 applied to the protection of a power transformer 1, the secondary 12 of the low-tension current transformer 4 circulates current through the compound secondary of the high-tension current transformer 5 the magnetic structure of which is in two parts 8, 9 each with a winding. That on part 9 (winding 10) consists of n + x turns (where x is a small number, for example 2 or 3) and that on part 8 (winding 11) consists of n - x turns, the x turns on this part being in the direction opposite to that of the x turns on part 9. The n turns carry the current which neutralizes the primary current of the whole core (due to conductor 3) as in the parent Specification, while the cross-connected x turns magnetize oppcsitely the two portions of the core thus biasing the system against operation on throughfault currents. The protective, relay 7 is connected in circuit with the tertiary winding 6 which embraces both parts of the core. In a modification (Fig. 2, not shown), the core 5 is in three parts, a main part which carries the n turns of the circulating current winding, the secondary winding for the tripping relay and an auxiliary secondary which supplies the x turns oppositely wound on the two auxiliary core parts and thus relieves the other transformer 4 of this function. An auxiliary secondary may embrace the two auxiliary core parts and contain an adjustable impedance whereby the flux in these parts may be varied to its optimum value.
Patent GB-360108-A (GB)
Title: Improvements relating to machines for removing spikes, nails and the like
IPC: E01B29/26
Filed: 1930-09-06
Abstract: 360,108. Spike &c. extractors. NORDBERG MANUFACTURING CO., Oklahoma Avenue, Milwaukee, Wisconsin, U.S.A.- (Assignees of Talboys, H. H. ; Oklahoma Avenue, Milwaukee, Wisconsin, U.S.A.) Sept. 6, 1930, No. 26684. Convention date, July 9. [Class 61 (iii).] A tongs mechanism, especially for extracting spikes from railway tracks, is movably mounted on a wheeled support carrying the operating mechanism. The tongs comprise a member G supported by a spring G2 and chain G<3> from a supporting member C<6>. A toggle lever system G<7>, G<8>, carried on the member G, has mounted thereon a jaw member G<9>, while a second jaw G<18> is carried on a member G<11>, having a slot G<15> engaged by a bolt G<16>, and a handle G<12> engaging a slot G<6> in the member G. The member G<11> is normally held up to open the jaws by a spring G<13>. A bar C<2>, continuously oscillated about a pivot on an upright C by a crank D<14> operated by belting from an I.C. &c. engine D, carries a hook C<3> engageable under a projection G<5> on the member G to raise the tongs and extract the nail, the jaws having first been caused to engage the spike by depressing the handle G<12>. The tongs are then freed from engagement with the hook C<3> and the spring G<13> causes the jaws to release the spike. The frame B<1>, E, carrying the operating mechanism is mounted through springs B<11>, Fig. 3, on the main wheeled support, so that on actuation of the tongs a shoe E4 on a member E<1> is brought into engagement with the rail A<3> to relieve the frame from shock. A modified form of cushioning means is described. A crank may be provided for moving the device along the rails, and is such that one revolution of the handle effects a movement equal to the distance between two spikes. A jack C<14> is used to lift the machine from the track. Two or more tongs mechanisms may be mounted on the same support.
Patent GB-1139210-A (GB)
Title: Preparation of unsaturated organic esters
IPC: B01J23/44
Filed: 1966-06-15
Abstract: 1,139,210. Unsaturated esters. NATIONAL DISTILLERS & CHEMICAL CORP. 15 June, 1966 [9 July, 1965], No. 26757/66. Heading C2C. Unsaturated organic esters are prepared by contacting an alkene and oxygen or an oxygen containing gas with a palladium or platinum metal or compound supported on carbon, and a palladium or platinum metal or compound supported on alumina as catalysts. The gaseous feed is passed over the catalysts successively or over a mixture to obtain the gaseous reaction product. The second catalyst may be activated with an alkali or alkaline earth metal hydroxide or salt of a weak acid e.g. sodium hydroxide, sodium, calcium and lithium acetates, sodium metaborate or disodium acid phosphate. Compounds of metals of variable valency such as vanadium, iron, cobalt, nickel, chromium, manganese, lead, copper or gold may be included in one or each of the two catalysts. Alkenes mentioned are ethylene, propylene, butene-1, isobutylene, hexene-1, isooctene, diisobutylene or styrene and the metals may be platinum, palladium, ruthenium, rhodium, osmium and iridium. An example describes the preparation of vinyl acetate.
Patent GB-1304680-A (GB)
IPC: H03L1/02
Filed: 1971-08-05
Abstract: 1304680 Electronic clocks and watches SUWA SEIKOSHA KK 5 Aug 1971 [6 Aug 1970(2)] 36800/71 Heading G3T [Also in Divisions H1 and H3] An electric timepiece utilizes a temperaturecompensated crystal oscillator, which has as the temperature compensating element a condenser the dielectric of which is made of a ferroelectric substance and which is adopted to present a temperature coefficient which changes from positive to negative in the ambient temperature range for which the oscillator is intended, using a temperature-compensating capacitor Cts, Fig. 4, the value of which can be adjusted so as to control the frequency of the oscillator; suitable constructions are described in the Specification [see Division H1.]