baber/WOPTO huggingface dataset:
Patent GB-1275213-A (GB)
Title: Improvements in or relating to the manufacture of semiconductor components
IPC: H01L21/00
Filed: 1970-06-19
Abstract: 1275213 Semi-conductor devices SIEMENS AG 19 June 1970 [20 June 1969] 29764/70 Heading H1K A thyristor is manufactured as follows: a substrate of one conductivity type has zones 2, 4 of the opposite conductivity type diffused into both its main surfaces, and following oxide masking and diffusion at one surface, from a doped glass layer, further regions 12, of strip form, are formed in region 2; on the surface above one set of junctions 14 between each region 2 and region 12 are deposited strips of an asphalt varnish 16 and on the remaining regions of both surfaces are deposited metal layers 17, 18, e.g. of nickel; the varnish is removed and the substrate divided, preferably by sandblasting along lines 20 so as to form thyristors in which one of the junctions 15 between control region 2 and its associated emitter 12 is short circuited. This structure is said to prevent premature firing of the devices when hot, or when presented with a rapid forward voltage rise. The substrate may be of silicon with phosphorus, gallium or aluminium dopants. Alternatively, the substrate may be divided along a line coinciding with the junction 15 between regions 2 and 12, in this case the junction 15 not being short circuited. In an alternative embodiment the stripshaped regions 12 are replaced by a surface region having square openings through which the lower region reaches the surface. Each opening is formed with its mid point at the mid point of one side of an imaginary square grid lying on the surface, the varnish masking taking place over one side of the square junction and half of each of its adjoining sides, each opening having its corresponding sides so treated. Contact material is deposited on the unmasked surface and the substrate divided so that each square of the grid is divided into four through the mid point of each side, each device containing one quarter of one of the openings, including a portion of the junction which was previously masked, and one quarter of an adjacent opening which includes an unmasked part of the junction. The control region, as exists in the opening, is therefore again short circuited to the emitter.
Patent GB-1468200-A (GB)
Title: Wilton carpet manufacture
IPC: D03D27/06
Filed: 1974-07-05
Abstract: 1468200 Wilton carpets THOMSON SHEPHERD & CO Ltd 5 July 1974 29815/74 Headings DIE and D1K A Wilton carpet has slevedge marker warps 9 which appear on the back of the carpet where a mark is required, e.g. an arrow indicating a pattern repeat or a makers name. The carpet has chain warps 4a, 4b, pile warps 6, 7, stuffer warps 5 and marker warps 9. The pile warps 6, 7 are shed by healds 13a, 13b raised to pile height by hooks 11a, 11b or raised to backing height, between upper and lower weft shots, by a bottom board 12, the marker warps 9 being raised to baking height, between upper and lower weft shots, by raising a separate bottom board 18 and lowered to marking position, beneath the bottom weft shot, by lowering the board 18 onto the board 12.
Patent GB-245908-A (GB)
Title: Improvements relating to wick burners for incandescent vapour lamps
IPC: F23D3/00
Filed: 1924-12-12
Abstract: 245,908. Jones, A. C., (trading as Messen. ger & Sons), and Kirby, A. Dec. 12, 1924. No Patent granted (Sealing fee not paid). Wick burners, annular.-In an annular wick burner, more particularly for use with incandescent mantles, a perforated thimble - like spreader 10 for directing the internal air supply on to the top of the wick 3 is surrounded by a burner cone 9 provided with an inwardly-turned flange 9<b> the inner periphery of which is formed with notches or serrations 9<a>, preferably of uniform shape and equidistantly spaced, for breaking up the external air supplied through apertures 7 in a gallery-supporting member 6. The burner cone 9 is secured to or formed integrally with a gallery 8 and is detachable therewith.
Patent GB-807235-A (GB)
Title: Improvements in or relating to fluorine-containing silanes and siloxanes
IPC: C07F7/12
Filed: 1955-10-19
Abstract: The invention comprises unsaturated fluorocarbon silanes of the general formula R11n R1m SiCl4 (m + n), where R11 is a perfluorocyclopentenyl, perfluorocyclohexenyl, pentafluoropentenyl or hexafluorocyclopentenyl radical, or an unsaturated radical containing 3 or 4 carbon atoms which is perfluorinated or which contains fluorine in addition to chlorine and/or hydrogen atoms, or the radical -C7F13, or the radical R33C16CF = CF-, and R1 is a monovalent hydrocarbon radical, n is 1 or 2, m is 0, 1, 2 or 3 and (m + n) does not exceed 4, and the compound trifluorovinylphenylmethylchlorosilane.  They may be prepared (1) by reacting chlorosilanes having silicon-bonded hydrogen atoms with the unsaturated fluorocarbons at temperatures of 350 DEG  to 600 DEG  C. at atmospheric pressure, hydrogen halide being given off; (2) by reacting diolefins with chlorohydrosilanes under pressure; or (3), when m is not 0, substituting hydrocarbon groups in the desired fluorocarbon silanes by Grignard reactions.  The invention also comprises fluorocarbon polysiloxanes which are hydrolysis products of the above silanes, and copolymers containing other siloxane units. In the examples: (1) hexafluorocyclopentenyl methyl dichlorosilane is prepared from 2-chloro-3,3,4,4,5,5 - hexafluorocyclopent - 1 - ene and MeSiHCl2, and hydrolysis yields the corresponding liquid siloxane; (2) CF3CF = CFSiMeCl2 and CF3CF = CFSiMeClF are prepared from perfluoropropene and MeSiHCl2, and hydrolysis of both yields a liquid siloxane CF3CF = CFSi(Me)O; (3) CF3CCl = C(CF3)SiCl3 is prepared from CF3CCl = CClCF3 and HSiCl3 and is hydrolysed to a resinous siloxane; (4) perfluorocyclobutenyl methyl dichlorosilane is prepared from perfluorocyclobutene and MeSiHCl2 and is hydrolysed to a liquid siloxane; (5) F33C16CF = CFSiCl3 is prepared from F33C16CF = CF2 an HSiCl3, and is hydrolysed to a solid siloxane.  The compounds are useful as coating compositions, electrical insulation, lubricants and hydraulic fluids; and as intermediates in the preparation of saturated compounds by addition of halogen and other groups.  They may also be copolymerized with olefines, halogenated olefines, and unsaturated acids, esters, fluorocarbons, ketones, aldehydes, amines, nitriles, nitro compounds, sulphides, ethers and amides.
Patent GB-323577-A (GB)
Title: Improvements in route indicators for trains and other vehicles
IPC: G03B21/00
Filed: 1928-10-16
Abstract: 323,577. British Power Railway Signal Co., Ltd., Pierce, E. E., and Glenn, S. L. Oct. 16, 1928. Selective signalling-apparatus.-In an indicator for indicating routes of trains &c. of the type wherein a plurality of optical projection devices are employed for projecting on to a , common screen one of a number of indications, each projection device has a prismatic lens adapted to deflect the beam of light so that the indication is displayed centrally of the screen with sufficient spread to fill an allotted space. As shown, the route indicator comprises a screen 14 upon which any one of a number of indications may be displayed by corresponding projection devices mounted in apertures in a plate 21. Each projection unit comprises a casing 10, containing a lamp 13 and a lens holder 12 carrying a prismatic lens 11 and a condensing lens 15. A stencil plate is mounted in front of the lens 11 and the beam of light passing through the stencil is denected and spread as indicated at 31 so as to produce a centrally disposed and enlarged indication on the screen. The lens holder 12 is slidably mounted in the casing 10 and may be loobed in an adjusted position by a screw 17. The lens 11 may be adjusted angularly but preferably the lens is locked to the lens holder by a projection 20 on the lens or holder. Instead of employing a stencil plate, the indication may be painted or etched on the lens. Access to the lamp 13 may be obtained through an opening in the casing 10 having a hinged cover 24 and the lamp may be of the type wherein the ordinary metal cap is provided with an outer sleeve adapted to fit the lamp holder so that replacement may be effected without disturbing the focus of the system. Moreover the lamp may be provided with one or more concentrated filaments. The indicator may be provided with a forwardly projecting hood 28. In modifications, lenses may also be provided in the rear or sides of the lamp casing to produce rearward and lateral indications which may be of different character or colour. When both front and rear indications are desired, two lamps may be employed with a condenser lens so disposed between them that the rays from either lamp after refraction by the lens converges to the filament position of the other lamp. Reflectors may be provided in the lamp chambers and instead of the projection devices being arranged on a circle. they may be disposed in vertical or horizontal rows.
Patent GB-1178278-A (GB)
Title: Improvements relating to Biased Electrical Relays.
Inventor: ALLEN GRAHAM JOHN
IPC: H01H51/22
Filed: 1967-06-28
Abstract: 1,178,278. Polarized electromagnetic relays. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd. 29 May, 1868 [28 June, 1967], No. 29888/67. Heading H1N. A polarized, electromagnetic relay of a relay assembly has its permanent magnet common to the relays and acting as a shunt to the armature and operative air-gap. The Figure shows parts of two relays having a common yoke 1 and common permanent magnet 10. Each relay has an armature 11 (only part of one shown) biased away from polepieces 13 on cores 2, 3 which have short-circuited copper rings 6, 7 to limit A.C. response. Saturable magnetic shunts 8, 9 extend between the cores and yoke. Energization of the winding 4 or 5 in the direction shown induces flux in opposition to the permanent magnet which saturates the shunt 8 or 9 and causes attraction of the armature. Energization, in the reverse direction induces flux in the same direction as that of the permanent magnet and the armature is not attracted. The shunts 8, 9 may be omitted or replaced by a common slotted member. The magnet 10 may embrace the ends of cores 2 and 3 (Fig. 2, not shown).
Patent GB-1099153-A (GB)
Title: Process for preparing elastic polyurethane material
Inventor: CAHILL JOHN WALTER
IPC: C08G18/10
Filed: 1965-07-14
Abstract: In a process for the preparation of elastomeric polyurethane filaments, a liquid urethane prepolymer, comprising the reaction product of excess organic diisocyanate with a hydroxyl-terminated polyester or polyether having at least two carbon atoms between the ether oxygen atoms, is extruded into a coagulating bath containing a 0.05-3 N solution of a polyamine in a hydrocarbon organic solvent, and the filaments so formed are cured in the absence of water.  Many polyesters, polyethers, diisocyanates, polyamines and hydrocarbon solvents are specified.  The liquid prepolymer mixture may be extruded through a single- or multi-hole spinneret into a bath 3 cms. to several metres in length maintained at e.g. 5-100 DEG  C.  The extruded filaments then pass over a roll and into an oven where solvent and polyamine are removed by heating, and the filaments are cured. The filaments may move through the oven on a continuous belt. If the temperature of the oven is 175-225 DEG C. or more the curing therein is complete in e.g. 30-60 seconds, and the filament may be led to a lubricant applicator and take-up spool.  If a lower temperature, e.g 65 DEG  C., is used, curing may be completed by heat-treating the filaments after spooling.  The cured filaments may be stretched, e.g. 10-700%. In examples, prepolymers prepared from (1) ethylene glycol/propylene glycol/adipic acid and 2,4-toluene diisocyanate, (2) polycaprolactone and 2,4-toluene diisocyanates, (3) polyethylene/propylene adipate and hexamethylene diisocyanate, (4 and 5) polyethylene/propylene adipate and 2,4-toluene diisocyanate (6) polypropylene glycol and methylene bis-(4-phenylisocyanate), (7) polypropylene glycol and 2,4-toluene diisocyanate are extruded into baths containing 4% ethylene diamine in toluene or benzene, and 0.9% or 5% of piperazine in toluene.
Patent GB-1346872-A (GB)
Title: Coating composition
IPC: C08G18/42
Filed: 1972-06-27
Abstract: 1346872 Coatings EI DU PONT DE NEMOURS & CO 27 June 1972 [28 June 1971 10 Dec 1971] 29971/72 Heading B2E [Also in Division C3] Steel panels primed with an alkyd resin primer pigmented with iron oxide and having a coating of black dip alkyd resin primer over the iron oxide primer may be coated with a thermosetting coating composition comprising 10 to 60% by weight binder solids content solution in an organic solvent, the binder consisting of (1) 75 to 98% by weight of an alkyd resin derived from 30 to 70% by weight of a drying oil selecetd from tung oil, tall oil, linseed oil, dehydrated castor oil, soya oil, chinawood oil and mixtures thereof, 30 to 55% by weight of an ester of an organic dicarboxylic acid and a polyol, 0 to 10% by weight of an ester of an aromatic monocarboxylic acid and a polyol and 0 to 8% by weight of a polyol, the percentage of the components being based on the weight of the alkyd resin, the dicarboxylic acid being selected from maleic acid, maleic anhydride, phthalic acid, phthalic anhydride, isophthalic acid, terephthalic acid, succinic acid, glutaric acid, adipic acid, bimelic acid, suberic acid, azelaic acid, sebacic acid and mixtures thereof and the polyol being selected from glycerol, ethylene glycol, propylene glycol, butane diol, diethylene glycol, trimethylolpropane, trimethylol ethane, pentaerythritol, sorbitol, mannitol and mixtures thereof; and correspondingly a biuret polyisocyanate of a C 1-12  aliphatic diisocyanate. The composition preferably contains a pigment and to increase the rate of cure, a metallic drier may be added. The polyisocyanate may be at least partially reacted with or blended with a C 4-20  monohydric alcohol suitable alkyd resins are derived from linseed oil, chinawood oil, glycerol phthalate, glycerol isophthalate and glycerine or soya oil, pentaerythritol phthalate, pentaerythritol butyl benzoate and pentaerythritol. The polyisocyanate is preferably derived froni hexamethylene diisocyanate.
Patent GB-1365746-A (GB)
Title: Locking ring for container closures
IPC: B65D50/04
Filed: 1972-06-27
Abstract: 1365746 Safety closures ANCHOR HOCKING CORP 27 June 1972 [8 July 1971] 30000/72 Heading B8T A safety closure has a locking ring 12 held on the neck of a bottle 18 and a screw cap 14 with ratchet teeth 44 on its skirt which, as the cap is screwed down, ride over a tooth 36 on the ring. To release the cap, a lug 52 of a tab 30 on an extension 28 of the ring is pressed down, so releasing the tooth 36 from the cap teeth 44. The ring is held axially on the bottle neck by an annular bead on the neck and radially by serrations 24 on the ring which engage corresponding serrations 26 on the neck. The closure may be made tamperproof by strips (64), Fig. 12 (not shown), joining the release tab (54) to adjacent parts of the extension (62) of the locking ring.
Patent GB-849208-A (GB)
Title: High energy gaseous plasma containment device
IPC: H05H1/16
Filed: 1958-09-19
Abstract: 849,208. Nuclear fusion reactors; discharge apparatus. UNITED STATES ATOMIC ENERGY COMMISSION. Sept. 19, 1958 [Oct. 8, 1957], No. 30029/58. Classes 39(1) and 39(4). A thermonuclear reactor comprises a toroidal tube 9 of insulating material, a plurality of coils 12 lying in radial planes surrounding the tonus, conducting annular rings 14 in the torus supported in the plane of each coil, adjacent electrodes being connected to potentials of opposite polarity, means for evacuating the torus, and means for injecting deuterium into the torus. As shown in the Figure, the magnetic field sproduced by the coils and the electric fields between the electrodes are orthogonal at regions such as P, and in these regions plasma will be trapped and collisions between dueterium nuclei will occur with the release of energy and the production of neutrons. There may be 15 coils and electrodes spaced round the torus with a potential of 100 kV between each pair of electrodes, the magnetic field strength being 20,000 gauss. The gas pressure may be 10-100 microns.
Patent GB-162707-A (GB)
Title: Improvements in and relating to windings of alternating current dynamo electric machines
IPC: H02K3/28
Filed: 1919-12-02
Abstract: 162,707. British Thomson - Houston Co., Ltd., Clough, F. H., and Taylor, H. W. Dec. 2, 1919. Coils and conductors; windings. - The eddycurrent losses in a multi-turn coil for alternating- current armature windings are eliminated by dividing the conductors forming the coil into a number of sections which are transposed so as to take up successive positions within the composite conductors in passing throughout the coil. The number of sections in the conductor corresponds to the number of turns in the coil. The Specification gives an analysis cf the eddy-producing fluxes across the slot into two components, namely, an element of variable density across the depth of each conductor due to its own current and inducing eddy currents of the same distribution in all of the conductors, and an element of constant density across the depth of any conductor caused by the currents in the conductors above it. The second component, and therefore the eddies which it induces, is zero for the bottom conductor in a slot and increases by a constant amount in each conductor above it up to the top of the slot. It is shown that the eddies are eliminated by the above method of' successive transposition, the resulting condition being that the two conductors forming each turn are so arranged that the sum of the constant-flux elements acting on the compound sections of the composite conductor is the same for each of the sections. In the form shown in Fig. 3, comprising a three-turn coil of a conductor made of three sections A, B, C in parallel and insulated from each other throughout their lengths, the top conductor of the upper layer at VI, having the section sequences A, B, C, is connected to the top conductor of the bottom layer at III having the transposed sequence C, B, A. In the second and third conductors of each layer at V, IV and II, i respectively the sections which were at the bottom of the conductor in the previous positions are successively brought to the top of the conductor. Fig. 5 shows a form in which, while the sections A, B, C are transposed to successive positions in a three-part conductor as before, the top conductor in the upper layer at VI is connected to the bottom conductor in the lower layer at I. The middle conductors at V, II are connected together and the coil is completed by connecting the bottom conductor in the top layer at IV with the top conductor in the bottom layer at III. In coils having large conductors made up of sections as above, the sections may be divided into subsections which are successively transposed within the sections as they pass from turn to turn.
Patent GB-273565-A (GB)
Title: Friction brake
IPC: F16D69/04
Filed: 1926-11-29
Abstract: 273,565. Thompson, J. S. Nov. 29, 1926. Blocks and shoes. - A brake block has recesses 14 in its ends for receiving means by which it is secured to a support. A metal back 7 is secured to the back of the block and has upturned sides 8 and ends 9. The metal back may have perforations into which the material of the block is forced during moulding to secure the two parts together. The ends 9 of the metal back are cut and pressed down at 15 in the recesses. The metal back mav be made of wire mesh or expanded metal.
Patent GB-483460-A (GB)
Title: Improvements in electrode arrangements for use in electrical conductivity measurements
IPC: G01N27/07
Filed: 1937-11-04
Abstract: 483,460. Determining physical qualities of materials ; resistances. SCHIERJOTT, K. Nov. 4, 1937, No. 30287. Convention date, Nov. 4, 1936. [Class 37] Electrical conductivity measurements wherein a number of instruments are employed, include a combined constructional arrangement of electrodes and temperature equalizing resistors, the set of electrodes b<1> .. b<3> being connected each to its respective instrument, and the common electrode a being in circuit with all of the instruments. The temperature equalizing resistors c, Fig. 1, are built into the common electrode a, or they can be built into the separate electrodes. The electrodes are shaped, or partitioned, so as to form the requisite number of measuring cells. Fig. 3 shows another construction having the electrodes b<1> .. b<3> concentric with a common electrode a.
Patent GB-1481279-A (GB)
Title: Column-type display stand for flat parallelipipedic articles
IPC: A47F5/00
Filed: 1975-07-18
Abstract: 1481279 Display stands P FERRERO & C SpA 18 July 1975 [20 Nov 1974] 30311/75 Heading A4T [Also in Division B8] A display stand comprises a base 1 and a column formed to define inclined chambers 2 for receiving articles 9 to be displayed. The articles 9 are positioned in the chambers 2 on containers 8, each divided by a partition and having article-locating ribs 18.
Patent GB-1211049-A (GB)
Title: Improvements in or relating to transmission means including a hydrostatic transmission and optionally selectable gears between a prime mover and a driven shaft
IPC: F16H47/02
Filed: 1968-06-25
Abstract: 1,211,049. Variable-speed gear. LINDE A.G. 5 June, 1968 [27 June, 1967], No. 30317/68. Heading F2D. The selector lever 12 of a sliding wheel gear 4 in series behind a hydrostatic transmission 2 carries a fork 15 which limits the movement of a control member 16 of the hydrostatic transmission when the gear 4 is in a ratio other than its lowest so that the maximum speed of an output shaft 5 is the same in all ratios of the gear 4. The gear thus provides high and low torque ratios the latter using only the more efficient part of the hydrostatic transmission range, whilst eaeh ratio provides identical speed ratio ranges. As shown the gear 4 provides two ratios and in the lower ratio the selector lever 12 and fork 15 are moved right clear of a projection 18 on the control 16 thus permitting full movement of the control 16 between maximum forward and reverse settings 17. With the gear 4 in the high ratio the stop 18 abuts the fork 15 to limit the forward and reverse movement of control 16. The gear 4 may provide more than two ratios in which case the branches of the fork are stepped to limit the maximum speed of the output shaft in each ratio. The fork 15 may limit movement of the control member 16 in one direction only or may provide different limits for forward and reverse drive.
Patent GB-373925-A (GB)
Title: Improvements in or relating to the making of sound records
IPC: G11B3/70
Filed: 1931-11-02
Abstract: 373,925. Gramophone records. STEATIT-MAGNESIA AKT.-GES., 18, .Breitestrasse, Pankow, Berlin. Nov. 2, 1931, No. 30327. Convention date, Nov. 1, 1930. [Class 40 (ii).] Record blanks for recording in the cold state to produce a record which can be directly reproduced many times are formed with a recording layer of artificial resin varnish, preferably prepared from phenol or urea condensation products, mixed with an amount not exceeding 20 per cent of organic and inorganic material, preferably in colloidal form, the layer being hardened by heat alone both before and after recording. The added material may be graphite, magnesium oxide, kaolin, steatite powder, magnesia cement, nitrocellulose compounds, and gelatine dissolved in glycerine. Cellulose derivatives with an equal quantity of the inorganic material is suitably employed as the added material.