baber/WOPTO huggingface dataset:
Patent GB-1197154-A (GB)
Title: High Voltage Transient Protection for an Insulated Gate Field Effect Transistor
IPC: H01L27/02
Filed: 1969-03-26
Abstract: 1,197,154. Semi-conductor devices. B.C.A. CORPORATION. 26 March, 1969 [10 April, 1968], No. 15764/69. Heading H1K. The gate insulation of an IGFET is protected from overvoltages by means of a pair of back-toback diodes connected between the gate and the substrate, the diodes being formed in the same substrate as the IGFET. The use of back-toback diodes provides protection against both positive and negative overvoltages. The device is formed in a P-type substrate 40 and the IGFET comprises N + type source and drain contact regions (44, 48) from which extend N-type source and drain regions (46, 50) the gap between which is covered by the metal gate electrode (21) on top of a thin part (59) of the insulating (SiO 2 ) surface layer (53), Figs. 2 and 3 (not shown). As shown, Fig. 4, the protective diodes comprise P + type regions 66, 68 formed in an N-type inclusion 62 the spacing between the junctions being sufficient to prevent transistor action. Diode region 68 is contacted by a metal area 60 which also forms the bonding pad for the IGFET gate electrode (21). The diode region 66 is connected to the substrate 40 by a conductive track 72 via a P + type contact region 64 which is of annular configuration and surrounds the N-type inclusion 62 to prevent FET action under the gate bonding pad between region 62 and the active N-type regions of the IGFET. The device may be produced using conventional diffusion and photolithographic masking techniques. If the IGFET is provided with two gate electrodes both may be protected by back-toback diode arrangements which can be formed under their respective gate bonding pads. The IGFET may also be of the P channel type using and N-type substrate provided that the N-type diode inclusion is isolated from the substrate, for example by a surrounding P-type region. Diodes comprising N + type regions in a P-type inclusion may be similarly used with both P and N channel IGFETs.
Patent GB-548162-A (GB)
Title: Improvements in or relating to self interrupters
IPC: H01H63/20
Filed: 1941-12-09
Abstract: 548,162. Electromagnetic interrupters. TELEFONAKTIEBOLAGET L. M. ERICSSON. Dec. 9, 1941, No. 15893. Convention date, Nov. 16, 1940. [Class 38 (v)] In a self-interrupter for driving a selector 13 or other switch, the armature 11 carries a pin 18 which passes with some clearance through a hole in a lever 15, and the end of the lever engages a projection 24 on a contact spring moving this sideways out of engagement with a co-operating contact spring.
Patent GB-314194-A (GB)
Title: Improvements in and relating to fluid pressure braking apparatus
IPC: B60T15/18
Filed: 1928-05-31
Abstract: 314,194. Westinghouse Brake & Saxby Signal Co., Ltd., (Westinghouse Air Brake Co.). May 31, 1928. Fluid-pressure.-Devices such as are provided in connection with the exhaust port of the triple valve of fluid-pressure brake apparatus to retain a predetermined degree of pressure in the brake cylinders or to enable the release of the brakes to be graduated while permitting the re-charging of the auxiliary reservoirs, are arranged to be put into and out of operation by variation of the train-pipe pressure from the normal. According to Fig. 1, the brake cylinder exhaust pipe 5 from the triple valve 1 is connected to a pressureretaining valve 4 and also to the chamber 8 of a piston 7 slidable in a casing 6 and carrying a valve 15. When the piston is seated, as shown, on the annular rib 12 the normal train-pipe pressure in the pipe 2 acting on the restricted area of the piston is unable to lift it against the action of the spring 17 and the valve 15 thus being open, the brake cylinder can exhaust freely through the chamber 8 and a port 9. To render the retaining valve 4 operative, as on an incline, the train-pipe pressure is raised sufficiently above the normal pressure to overcome the spring 17, the upward movement of the piston closing the valve 15 so that exhaust of the brake cylinder can take place only through the valve 4 which closes at, say, 20 lbs. pressure. When the piston is seated, the annular area 11 thereof is subject to atmospheric pressure through the passage 13. When the piston 7 leaves the seatring 12, the passage 13 is closed and the whole under-face of the piston is exposed to the fluidpressure and it thus moves rapidly to the upper position. To re-open the valve 15 it is, necessary to reduce the train-pipe pressure to a value, less than the normal full-service reduction. With the device shown in Fig. 2, a higher normal train-pipe pressure is used for operating on a. level track than on gradients. With the lower normal pressure of, say, 70 lbs. in the train-pipe, the piston 7 is seated by the spring 17 and the valve 15 is also seated by the spring 18 so that the retaining-valve 4 is operative. When the train-pipe pressure is raised to the higher value of, say, 90 lbs., the piston 7 assumes the upper position, in which it holds open the valve 15 and permits the brake cylinder to exhaust, completely through the port 9. The piston 7 remains in the upper position until the train-pipe pressure is reduced below the equalizing point.
Patent GB-368613-A (GB)
Title: Manufacture of 1-phenyl-2-amino-alcohols-1 containing hydroxyl in the phenyl residue
Filed: 1931-06-01
Abstract: 1-Hydroxyphenyl-2-aminoalcohols-1 are prepared by treating an aliphatic-aromatic ketone containing one or more etherified or esterified hydroxy groups in the phenyl nucleus with nitrous acid, reducing the resulting isonitroso compound and if necessary converting the etherified or esterified hydroxyl groups into free hydroxyl.  The nitrous acid is preferably liberated from an inorganic or organic nitrite, e.g. sodium nitrite, butyl or propyl nitrite, by treatment with a mineral acid, e.g. gaseous hydrochloric acid.  The isonitroso compounds are advantageously reduced catalytically, either in the form of their salts or as free bases, and in an organic solvent such as alcohol.  By the use of a precious metal catalyst, an aralkoxy group, whether present in the isonitroso compound or in its reduction product, is converted into the hydroxyl group.  In the case of compounds substituted by acyl groups in the hydroxyl group, the acyl residue may be split off at any stage subsequent to the introduction of the isonitroso group.  The products possess therapeutic properties.  Examples are given of the conversion of o- and p-benzyloxypropiophenones (prepared by treating the sodium compounds of o- and p-hydroxypropiophenone with benzyl bromide) into o- and p-hydroxyphenylpropanolamines, m-benzyloxypropiophenone (see Specification 367,951) into m-hydroxyphenylpropanolamine, 3 : 4-dibenzyloxypropiophenone (from propiopyrocatechin and benzyl bromide in alcoholic caustic potash) into 3 : 4-dihydroxyphenylpropanolamine, p-benzyloxybutyrophenone (obtained from p-hydroxybutyrophenone by reaction with benzyl bromide) into p-hydroxyphenylaminobutanol, and p-acetoxypropiophenone (prepared by treating p-hydroxypropiophenone with acetic anhydride) into p-hydroxyphenylpropanolamine.  In each case the isonitroso compound is formed as an intermediate product, whilst the intermediate production of m- and p-benzyloxyphenylpropanolamines and 3 : 4-dibenzyloxyphenylpropanolamine is also described.
Patent GB-1069184-A (GB)
Title: Improvements in or relating to pipe couplings
Inventor: CLEMENTS HENRY
IPC: F16L33/28
Filed: 1965-04-15
Abstract: 1,069,184. Pipe couplings. ANDRE RUBBER CO. Ltd. April 14, 1966 [April 15, 1965], No. 16236/65. Heading F2G. A coupling for absorbing sound and to prevent high instantaneous pressures developing comprises rigid end flanges 10, 11 and a central flexible section 12 of an elastomeric material reinforced by layers of " weftless " woven fabric and provided with enlarged annular beads 14. The latter are retained between rims 13 on the flanges and tubes 15, the rims and/or the tubes being radially rolled towards each other, and the tube ends 17 being radially rolled towards the flange. The section 12 may be encircled by a metal band (21), Fig. 2 (not shown), and the beads 14 may be reinforced by hoops (25). A separately moulded liner of plastics material may be inserted into the coupling.
Patent GB-510107-A (GB)
Title: Repair patch for motor tyres, and method of making same
IPC: B29C73/10
Filed: 1938-05-31
Abstract: 510,107. Pneumatic tyres. BOWES SEAL FAST CORPORATION. May 31, 1938, No. 16265. Convention date, Sept. 1, 1937. [Class 144 (i)] [Also in Group VIII] A repair patch is made by placing a block of non- vulcanized or partly-vulcanized rubber on the central area of a strip of cord fabric, pressing the block on to the fabric to cause the rubber to flow along towards the ends of the fabric cords and so impregnate and stretch them, and vulcanizing the rubber to hold the cords in stretched condition. A block 7 of non-vulcanized or partlyvulcanized rubber is placed on the central area of a stack of crossed fabric strips 6, flattened out into a disc in which the fabric strips are embedded, and vulcanized while still under pressure. The opposite side of the patch is coated with rubber adhesive which is covered with a temporary protecting layer of cloth or aluminium foil.
Patent GB-1472273-A (GB)
Title: Installation channel
IPC: H02G3/04
Filed: 1974-04-11
Abstract: 1472273 Conduit for conductors INTERMERCURY FINANCE & TRADING CO Ltd 11 April 1974 [24 July 1973] 16273/74 Heading H2C A channel for receiving services in building comprises a set of components 1-5 adapted to be interconnected by tongue and groove joints which are preferably snap fitting and undercut, and wherein the uppermost component of each sidewall being connected to its neighbouring component by two tongues and grooves. The components may be plastics or metal coated with plastics. Ribs 17 may support equipment boxes or receive dividing walls. The channels may be deeper and include horizontal dividing walls.
Patent GB-331062-A (GB)
Title: Improvements in electrically heated bed warmers and the like
IPC: H05B3/00
Filed: 1929-05-27
Abstract: 331,062. Croad, A. K., (Naamlooze Vennootschap Fabrick van Instrumenten en Electrische Apparaten Inventum). May 27, 1929. Electric warmers.-An electrically - heated bedwarmer of the heatstorage type is so constructed that the circuit is broken except when the warmer is suspended on a hook, &c. The beating resistance wire 4 is wound in grooves on a cylindrical block 1 of fireclay, &c. having a central bore. A cylinder 5 of fireclay, &c. is slipped over the outside of the resistance wire 4 and the composite block so formed is slipped inside a metal casing comprising two concentric cylinders 6, 7 and end discs 10, 11. Asbestos lining 8, 9 may be interposed between the fireclay and the metal case. Carried by the lower disc 11 are a pair of plug contacts 16 and a pair of fixed switch contacts 14. The resistance wire 4 is connected at its lower end to one switch contact 14, its upper end being brought down through a passage 31 in the block 1 and connected to one of the plug contacts 16. The remaining plug contact 16 and switch contact 14 are directly connected. Passing through the central cylinder 6 is a rod 21 carrying at its upper end a ring 22 by which the warmer may be suspended from a hook 23. At its lower end the rod 21 carries a pair of contacts 17 which connect together the contacts 14 and thereby complete the circuit of the resistance wire 4 when the warmer is suspended. When the warmer is taken off the hook the contacts 17 are retracted by gravity or by springs (not shown). The cylinder 5 is made in halves and has cut-away portions to accommodate the terminals.
Patent GB-1342115-A (GB)
Title: Adhesive composite material
IPC: C09J7/26
Filed: 1971-05-21
Abstract: 1342115 Laminated products JOHNSON & JOHNSON 21 May 1971 [22 May 1970] 16379/71 Heading B5N An adhesive composite article comprises an inherently adhesive mass and a protective covering adhered to a surface of the adhesive mass and formed of an open cellular resiliently deformable polymeric material having 30 to 120 pores per linear inch, whereby under compression the article becomes adhesive at the outer surface of the covering by penetration of the adhesive mass thereto. The open cellular material may be polyurethane-, vinyl-, styrene-butadiene- or rubber-based-foam. Outer foam webs may be applied to both faces of the adhesive layer or one outer layer may be foam and the other of woven cloth, reticulated polymer film or paper. The foam may be impregnated with acrylic latex, thermoplastic polyurethane or ionomer resin and may be reticulated or perforated to provide an open cell structure. The adhesive, which may be pressure sensitive or cohesive and usually has a "Williams" plasticity of 1-8 millimetres, may be an isooctyl acrylate/acrylic acid copolymer, natural rubber or cis-polyisoprene or silicone rubber. It may form a distinct layer between outer foam webs, may be impregnated part way through the foam layers or a third foam layer impregnated throughout with the adhesive may be used. Woven or non- woven cloth, cotton gauze, paper (which may be creped or micro-pleated), reticulated plastics film, rubber, polyurethane, threads, strands, filaments, rovings or fibre glass may be incorporated either within the adhesive layer or between the layer and one or both of the foam sheets. The foam may surround an inner adhesive core to form a rope-like structure. The product may be used as a surgical wrapping, closure or strapping tape and in making floor coverings or plaques, one of the outer webs of the product being replaced by a tile or plaque.
Patent GB-947796-A (GB)
Title: Improved method of and means for applying active material to the plates of electric accumulators
Inventor: BARAK MONTEFIORE
IPC: H01M4/14
Filed: 1961-05-05
Abstract: 947,796. Batteries. CHLORIDE ELECTRICAL STORAGE CO. Ltd. April 25, 1962 [May 5, 1961], No. 16435/61. Drawings to Specification. Heading H1B. Tubular type plates for lead/acid batteries are filled with a lead oxide paste incorporating a water-soluble thickening agent by extruding the paste under pressure into the tubes. Grey oxide or grey oxide mixed with lead may be used and it may be pre-sulphated. The top bar and spines of the plate may be assembled and all the individual tubes filled simultaneously.
Patent GB-1249629-A (GB)
Title: A bird barrier plant protector
Inventor: WILLIAMS HENRY
IPC: A01G13/10
Filed: 1968-04-05
Abstract: 1,249,629. Plant protector. H. WILLIAMS. 2 July, 1969 [5 April, 1968], No. 16450/68. Heading A1E. A plant protector comprises a radial array of resilient spokes which extend from a hub on a supporting member which can be inserted into the ground.
Patent GB-554142-A (GB)
Title: Improvements in or relating to friction brakes
IPC: F16D65/14
Filed: 1941-12-22
Abstract: 554,142. Disc brakes. ROSS. J. A., and KITCHIN W. C. Dec. 22, 1941, No. 16514. [Class 103 (i)] A disc brake particularly for vehicle wheels comprises a rotatable disc arranged to be gripped between a pair of non-rotatable discs each of which is movable towards and away from the rotatable disc. The brake may be applied by springs and be released by cams or be applied by cams and released by springs or be both applied and released by screw-and-nut mechanism. As shown, a rotatable annular disc 2 is bolted to projections 4 on a plate 5 secured to a wheel hub 3. Non-rotatable discs 6, 7 are slidably mounted upon a sleeve 10 rotatable on a sleeve 11 integral with a fixed plate 12. The discs 6, 7 are urged to grip the disc 2 by springs 16 on pins 13 attached to the plate 12 and a plate 14 and extending through the discs and are disengaged by the engagement with rollers 18 thereon, of a two-faced cam 17 carried by the sleeve 10 which is provided with teeth 19 meshed with a gear wheel 20 carrying an operating arm. Application of the brake by the springs may be assisted by' levers pivoted on the pins 13 or the plates 12, 14 and engaging the discs 6, 7 and additional cams or cam faces on the member 17. In another construction, the discs 6, 7 have right-and-lefthanded screw-threaded apertures engaged by screwthreaded sleeves mounted on the pins 13 and provided with gear wheels meshed with a central gear wheel mounted on the sleeve 11, this gear wheel being meshed with a further gear wheel arranged similarly to the gear wheel 20. According to the Provisional Specification, the discs may be released by springs and be applied by a cam member.
Patent GB-923754-A (GB)
Title: Improvements in and relating to rotating beam trochotrons
Inventor: REANEY DONALD
IPC: H01J31/06
Filed: 1960-05-10
Abstract: 923,754. Cathode-ray tubes. ERICSSON TELEPHONES Ltd. May 10, 1961 [May 10, 1960], No. 16532/60. Class 39 (1). A rotating beam trochotron comprises a cylindrical permanent magnet 13 of electrically insulating material mounted inside the envelope 10 and carrying a plurality of anodes 14 on its inner surface. The magnet is preferably of ferrite ceramic and is provided with longitudinal slots, formed during moulding or by grinding, in which the anodes are slid or sprung or formed by vacuum deposition of a nickel-chromium alloy. The cathode 17, spades 18 and switching grids 19 may be mounted between two mica discs which are an accurate fit in the magnet, the lower disc being seated against an inturned lip of the magnet, Fig. 1 (not shown).
Patent GB-219676-A (GB)
Title: Improved manufacture of vanillin
IPC: C07C45/29
Filed: 1924-07-10
Abstract: Vanillin is prepared by saponifying guaiacyltrichloromethyl carbinol and oxidizing the product.  According to the examples, the carbinol is boiled with cupric acetate solution, optionally after previous boiling with water and with introduction of air; the vanillin is extracted with ether or chloroform from the cooled solution. Guaiacyltrichloromethyl carbinol is obtained by condensing guaiacol with chloral hydrate.
Patent GB-103630-A (GB)
Title: Watches Readable by Touch.
IPC: G04B25/02
Filed: 1916-11-21
Abstract: 103,630. Marks, E. C. R., (Waltham Watch Co.). Nov. 21, 1916. Dials and hands -Provides for as certaining the time by touch. The fixed annular dial 18 bears four sets o three studs 19, 19<a> 19<b>, to indicate the hours and the five. minutes intervals by their angular separation and radial distance, an additional special stud 21 marking twelve o'clock. A rotary disk 22 bearing a single stud 23 reads the hours, and a short thick hand 25 reads the five-minutes intervals and subdivision thereof.
Patent GB-239008-A (GB)
Title: Improvements in, or connected with, shirts
IPC: A41F19/00
Filed: 1924-07-11
Abstract: 239,008. Smith, A. M. July 11, 1924. Shirts.-To maintain the starched front of a shirt in position on the wearer attachments b<1> such as tabs or the like are provided at the sides of the front and connected by straps a<1> passing underneath the arms and around the back of the wearer. In another construction a band is attached permanently by straps to one side of the shirt only the other side being provided with tabs for engaging fastenings on straps attached to the band. In another modification a strip of fabric is provided round the edge of the starched front and provided with buttonholes for engagement with buttons on a strap.
Patent GB-590319-A (GB)
Title: Means for preventing leeway drift of sailing craft
IPC: B63B3/38
Filed: 1945-07-02
Abstract: 590,319. Keels. GLANVILLE, L. July 2, 1945, No. 16764. [Class 113 (ii)] Leeway drift of sailing craft due to cross winds is prevented by two longitudinal channel members 12, one secured to each side of the keel 10 and shaped fore and aft to decrease resistance. When the craft inclines, the slipwater passing under the bottom 11 is pocketed in the channel 13, the member 12 thus functioning as a baffle.
Patent GB-720057-A (GB)
Title: Production of dyed aromatic polyesters
IPC: C08J3/205
Filed: 1952-07-03
Abstract: A linear aromatic polyester is dyed by making a solution of the polyester and the dyestuff in a common solvent and thereafter precipitating the polyester from the solution.  Precipitation may be effected by cooling the solution and the precipitated dyed polyester may be freed from low molecular weight components or from the common solvent by washing with benzene, acetone or chloroform.  Many dyestuffs are referred to, mostly of the Indanthrene series. Suitable solvents are compounds containing a naphthalene nucleus or two benzene nuclei linked together directly or through an -O-, -CO-, or -(CH2)nbridge (n = 1-4), which solvents may be wholly or partly hydrogenated and/or substituted by one or more CH3-, CH3O-, C2H5-, C2H5O-, C3H7- or C3H7O- groups.  Specified are diphenyl, diphenyl ether, diphenyl methane, naphthalene-alpha- or beta-naphthalene and decahydronaphthalene and mixtures thereof. Nine examples, all relating to polyethylene terephthalate, are given.  Specifications 651,694 and 719,959 are referred to.
Patent GB-573516-A (GB)
Title: Improvements in garment hangers
IPC: A47G25/32
Filed: 1943-10-13
Abstract: 573,516. Garment hangers. BROOKS & CO., Ltd., J. B., and BROOKES, T. J. W. Oct. 13, 1943, No. 16769. [Class 52 (v)] A garment hanger is provided with two hooks 2, 3 of different length by means of which it can be suspended at different distances from the support. The hooks may be integral with the hanger or pivotally mounted on the face thereof.
Patent GB-560309-A (GB)
Title: Improvements in or relating to machines for cutting metal by the application of heat
IPC: B23K7/00
Filed: 1942-11-27
Abstract: 560,309. Cutting by fusion. SPEAR & JACKSON, Ltd., and PARSONS, G. W. Nov. 27, 1942, No. 16889. [Class 83 (iv)] In a machine for cutting metal by heat, such as by a burner or blow-pipe, provided with a template over which is traversed a rotating tracer wheel, the tracer wheel and the upper surface of the template are toothed so as to prevent slipping on curves of small radius. The template a which may be of flat bottom or double-headed rail form in section but of small gauge may be secured by clips e to the surface of a sheet of metal or wood g. The carrier c of the tracer wheel b is provided with rollers d for engaging the sides of the template to maintain the wheel centrally thereover. The template may be toothed by passing a plain bar through rolls.
Patent GB-232457-A (GB)
Title: Improvements in or relating to wheeled trucks or transporters for machines
IPC: B62B1/00
Filed: 1924-07-15
Abstract: 232,457. Harrap, W. O., and Harrap Wilkinson, Ltd. July 15, 1924. Steering-gear.-The steering-wheels d of a truck are mounted on cranked axles d<1> connected together by a link f to which is pivoted the lower arm g<2> of a bifurcated member g pivoted to the frame A and carrying the steering-handle e.
Patent GB-355388-A (GB)
Title: An improved resilient wheel
IPC: B60B9/20
Filed: 1930-06-02
Abstract: 355,388. Spring wheels. HOLMES, N. J., 1, Chaucer Street, Moonee Pcnds, and TAYLOR, C., 34, Ferrars Place, Albert Park, both in Victoria, Australia. June 2, 1930, No. 17015. [Class 144 (i).] The side-plates 14, which enclose a pneumatic cushion 10 fitted between the wheel-rim 7 and the outer tyre-carrying rim 1, are guided between the wheel body and a pair of discs 24, 25 secured to the wheel. Rubbing surfaces are provided by metal plates 19 on the wheel and asbestos &c. plates secured to the side discs. The latter are adjustably connected by bolts 26 which may be formed with collars 28 to receive pins 29 pivoted on the wheelrim.
Patent GB-264394-A (GB)
Title: An improvements in matches
IPC: C06F3/02
Filed: 1926-07-07
Abstract: 264,394. Forsyth, P. M. July 7, 1926. Drawings to Specification. Matches.-Matches are waterproofed by a mixture of stearin and alkanet root in the proportions by volume of 18 to 1, which is applied to the head only or to the whole of the match. The material is prepared by melting the stearin, heating to 210‹ F. and adding the alkanet root, the mixture being cooled to 125‹ F. before the matches are dipped.