baber/WOPTO huggingface dataset:
Patent GB-436990-A (GB)
Title: Improvements in piston and like packing rings
IPC: F16J9/16
Filed: 1934-09-14
Abstract: 436,990. Piston-rings. OUBRIDGE, W. A., Parklands, Park Road, Coventry. Sept. 14, 1934, No. 26384. [Class 122 (i)] In packing-rings of the kind comprising superposed split rings a, b, one of which has an annular rib a<1> engaging a groove in the other, one or each of the rings is provided with an axial projection b<3> to engage recesses a<3> in the ends of the other.
Patent GB-1363701-A (GB)
Title: Noninteracting optical system for a colour encoding camera
IPC: G03B33/00
Filed: 1971-04-19
Abstract: 1363701 Colour television cameras RCA CORPORATION 19 April 1971 [17 April 1970] 26413/71 Heading H4F Two arrays 22, 23 of cylindrical lens elements are disposed in front of a vidicon camera tube 17 and are separated by an optical coupling means 24, which is in contact with the curved lens surfaces of the arrays 22, 23. Each of lens arrays 22, 23 has its lens elements parallel to the stripes of one of a pair of gratings making up filter assembly 14, the lens elements being of smaller width than the corresponding grating stripes. The lens elements of array 22 are convex and parallel to alternate cyan and transparent stripes of one grating, the stripes being at right-angles to the direction of line scan of tube 17, and the lens elements of array 23 are concave and parallel to oblique alternate yellow and transparent stripes of the other grating. The optical coupling means 24 is such that its refractive index for blue light is equal to that of array 22, and its refractive index for red light is equal to that of array 23. Thus red scene light is encoded by the cyan-transparent grating of assembly 14 and is focused by lens array 22, but is unaffected by the boundary between lens array 23 and optical coupling means 24. Similarly blue scene light is encoded by the yellow-transparent grating and focused by lens. array 23. The widths of the cyan and yellow stripes of assembly 14 are equal so that the red-representative signal is at a higher frequency than the blue representative signal,
Patent GB-1293262-A (GB)
Title: A nonlinear control device
Inventor: HOUK RICHARD DAVID
IPC: G05G7/04
Filed: 1970-01-14
Abstract: 1293262 Cable operating mechanisms NORTH AMERICAN ROCKWELL CORP 14 Jan 1970 [5 March 1969] 26498/72 Divided out of 1293261 Heading B7.E The subject-matter of this Specification is identical to that of Specification 1,293,261, but the claims differ.
Patent GB-257438-A (GB)
Title: Improvements in or relating to internal combustion turbines
IPC: F02C5/02
Filed: 1925-10-23
Abstract: 257,438. Chandabhoy, N. K. N. Oct. 23, 1925. Working-fluid supply; reversing.-In an internal-combustion turbine a rotor 1 has pockets 6, 8, 10 co-acting with combustion chambers 12, 14 for one direction of working, and pockets 7, 9, 11 coacting with combustion chambers 13, 15 for the reverse direction of working. The inlet valve of each combustion chamber, for example the valve 20 of chamber 14, is opened by cam-operated links at the same time as the discharge valve 40 of the diametrically opposite chamber 12. Camoperated exhaust valves 48, 49 deliver the exhaust gases to pipes leading to chambers 26, 27 which transfer heat to compressed gas passing to the combustion chambers. Two cams A, B, Fig. 6, are provided for actuating the levers for the forward and reverse valves respectively. Either cam is made operative by turning a screw hand-wheel 115 so that it advances towards the particular cam and by means of links 119 causes the operative humps 118 to project radially from the body of the cam.
Patent GB-1150932-A (GB)
Title: Improvements in or relating to Heterocyclic Compounds and the Manufacture thereof
IPC: C07D403/04
Filed: 1966-06-14
Abstract: 1,150,932. 3 - Hydroxy methyl - 4 - (indol- 3-yl) - hexahydro - 1H - azepines. UPJOHN CO. 14 June, 1966 [22 June, 1965], No. 26525/66. Heading C2C. The invention comprises compounds of the formula where R, R 3  and R 4  are hydrogen or C 1-4  alkyl groups and R 2  is hydrogen, halogen or a C 1-4  alkyl or C 1-4  alkoxy group, and the acid addition salts, and, when R is alkyl, the N- oxide and alkyl quaternary ammonium salts thereof formed by virtue of the N of the azepine ring. The compounds are prepared by reacting a compound of the formula with a dialkyl malonate in the presence of a strong base, e.g. NaOH, and an inert solvent to obtain the keto-ester of the formula where R 1  is an alkyl group, and subsequently reducing this compound with LiAlH 4  to the required hydroxymethyl compound. The N- oxides may be prepared by treating the compounds in which R is alkyl with hydrogen peroxide. The quaternary and acid addition salts are obtained by conventional methods, An example describes the preparation of the intermediate ethyl 1-methyl-2-oxo-4-(indol-3 yl) - hexhydro_- 1H - azepine - 3 - carboxylate, the separation of this compound into two isomers and its reduction to 3-hydrexymethyl- 4 - (indol - 3 - yl) - 1 - methylhexahydro - 1H - azepine.
Patent GB-795846-A (GB)
Title: Improvements relating to the metallising of ceramics
IPC: C04B41/51
Filed: 1956-08-31
Abstract: Ceramics are metallized by coating with a paint-like mixture containing ammonium phospho-molybdate and molybdenum oxide and then heating in a reducing atmosphere, preferably to not above 1500 DEG C.  The mixture may also contain alkaline earth oxides or carbonates. A composition given by way of example contains, by weight: ..Per cent .Ammonium phospho-molybdate ..16 .Molybdenum oxide . . ..28 .Barium carbonate . . ..8 .Amyl acetate . . . ..40 .10 Per cent collodion . . ..8 The resultant coatings are stated to facilitate vacuum-tight joints being made with the ceramic.ALSO:Ceramics are metallized by coating with a paint-like mixture containing ammonium phospho-molybdate and molybdenum oxide and then heating in a reducing atmosphere, preferably to not above 1500 DEG C.  The mixture may also contain alkaline earth oxides or carbonates.  A composition given by way of example contains, by weight: ammonium phospho-molybdate 16 per cent, molybdenum oxide 28 per cent, barium carbonate 8 per cent, amyl acetate (binder) 40 per cent, 10 per cent collodion (thickener) 8 per cent.  The resultant coatings are stated to facilitate vacuum-tight joints being made with the ceramic.
Patent GB-1249084-A (GB)
Title: Method for determining exposure of a base material through an overlying coating
IPC: H01L21/306
Filed: 1970-06-03
Abstract: 1, 249, 84. Testing semi-conductor materials. INTERNATIONAL BUSINESS MACHINES CORP. June 3, 1970 [June 19, 1969], No. 26716/70. Heading G1S. During the production of a semi-conductor device the completeness of an etching process to remove a coating of say silicon dioxide from a base material of silicon can be determined by first cooling and drying the device with dry nitrogen and then when the device has been cooled to a temperature below the dew point of the nitrogen vapour, passing wet nitrogen over the surface. Since bare silicon base material is hydrophobic, condensation thereon on such a properly etched surface will leave small beads of moisture on the bare silicon surface, whereas a coating of oxidized silicon on the base material or the etching solution itself are hydrophilic and moisture thereon will cover them in a uniform thin film. An acceptable device when observed through a microscope has small water droplets formed in the desired and clean etched areas. The method may also be used to detect an incomplete process of coating.
Patent GB-835079-A (GB)
Title: A hand tool for inserting rigid rings in pipes of thermo-plastic material
IPC: F16L47/04
Filed: 1957-08-26
Abstract: 835,079. Inserting oversized members into resilient pipes. WEDNESBURY TUBE CO. Ltd., and CARTLIDGE, E. Aug. 20, 1958 [Aug. 26, 1957], No. 26785/57. Class 108(3) A hand tool for inserting rigid rings in pipes of thermoplastic material such as polythene, has a plug element 10, Fig. 3, formed integrally with a screwed stem 11, which screws into a spigot element 13. The spigot element 13 is counterbored, and the screwed portion 11 carries a fixed head which prevents the spigot element being screwed off the threaded portion 11. In use a rigid ring 21 is sleeved over the plug element 10 and up the stem 11 on to the spigot portion 19 so that it abuts an annular shoulder 17. The tool is now inserted plug end first into a pipe 22 until the spigot portion 19 is entered into the pipe bore and the end edge of the pipe 22 abuts the ring 21. The pipe 22 is now clamped between jaws 23 of a vice. This anchors the plug element 10 against axial movement. The spigot element 13 is now rotated in the appropriate direction to advance it axially so as to force the rigid ring 21 into and along the pipe bore. This screwing action is continued until a shoulder 18 comes up against the end edge of the pipe 22. The vice is now slackened off and the tool completely withdrawn from the pipe 22 through the ring 21, leaving the latter behind within the pipe. The plug element 10 may be milled or otherwise roughened to ensure a firm anchorage in the pipe, instead of having annular grooves. The screwed stem of the tool may be formed integrally with the spigot member and may screw into a bore in the plug. The pipe end may be heated to facilitate insertion of the abutment as described in Specification 819,754.
Patent GB-1341804-A (GB)
Title: Determination of crystalline silica and other mineral dusts in air
IPC: G01N15/06
Filed: 1972-06-08
Abstract: 1341804 Infrared spectrophotometric determination of particles in gases MINE SAFETY APPLIANCES CO 8 June 1972 [27 July 1971] 26880/72 Heading G2J Crystalline mineral particles suspended in a gas are determined by passing the gas through a membrane filter transparent to infrared radiation to collect any such particles on the filter, and placing the filter with its collected particles in an analytical beam of an infrared spectrophotometer to produce a spectrum of the particles on the filter. In a second beam of the spectrophotometer is placed an unused and clean membrane to act as a reference. Preferably coarse particles larger than 10 microns are first removed from the gas before it is passed through the filter. More particularly the gas is air and the particles are of crystalline silica.
Patent GB-499020-A (GB)
Title: Improvements connected with wear compensating mechanism for brakes
IPC: F16D65/52
Filed: 1937-07-19
Abstract: 499,020. Brakes. JENKINS, A. H. S., REECE, W. C. J. D., and TUCK, A. W. July 19, 1937, No. 26914/38. Divided out of 493,941. Drawings to Specification. [Class 103 (i)] The brake construction is the same as that described in Specification 493,941. The claims relate to the means for effecting the adjustment of the pivot centres of the shoes in accordance with the adjustment of the shoes to compensate for wear.
Patent GB-778027-A (GB)
Title: Glass pressing device
IPC: C03B11/16
Filed: 1955-09-22
Abstract: 778,027. Glass pressing. OWENSILLINOIS GLASS CO. Sept. 22, 1955 [Dec. 23. 1954], No. 27061/55. Class 56 A press-and-blow machine includes a press-mould 11 and blow mould 17 and a plunger 26 with neck moulds 16a. Admission of fluid pressure to the cylinder 20 of the plunger 26 is controlled by a camoperated main distributer 40 controlling supplies to pipes 90 and 51. Pipe 51 feeds another distributer M by way of pipe 52 and, as shown in Fig. 2. this distributer has two pistons 63, 64 of equal diameter, and a larger piston 66, on a common piston rod, a restricted passage 62 to beneath the piston 66, an exhaust port 67, a pipe 75 to the cylinder 28, and an adjustable exhaust 73. These arrangements allow the quick application of full pressure to the cylinder 28 followed by'a reduction of pressure therein, passage 62 allowing the build up of pressure beneath piston 66 to raise it against spring 61 and so raising piston 64 to close passage 55 and vent 75 through 67 (the lower end of piston 64 by now having uncovered the aperture at the base of chamber 56).
Patent GB-158359-A (GB)
Title: A new or improved wrapper for packages, parcels and the like
IPC: B65D65/02
Filed: 1919-11-04
Abstract: 158,359. Dunhill, A. Nov. 4,1919. Securing wrappers, special means for.-A wrapper for packages consists of a rectangular sheet of wrapper-material, a, provided with eyeleted perforations c, situated on the middle line and close to opposite sides of the sheet, through which a string d, preferably doubled, is passed. In use, a box or other package is placed in position and the wrapper folded about it, as shown. The free ends of the string are then passed around the parcel and one end passed through the loops formed at the opposite end, as at f, the free end g thus serving as a carrying- loop. The free ends may also be passed around the parcel and tied, as at k. A single string may also be used and may be knotted between the eyelets c in order to present detachment from the wrapper. A stronger wrapper may be formed by glueing two sheets together along overlapping edges m and forming the perforations c in the overlap.
Patent GB-813972-A (GB)
Title: Hardenable compositions comprising epoxy resins, and a process for curing these compositions
IPC: C08L63/00
Filed: 1957-08-28
Abstract: Compositions which together with fillers, pigments, dyes &c may be ground to give moulding powders consist of an epoxy resin having an epoxy equivalent of from 0.1-0.8, a novolak resin obtained by condensation of an aldehyde and an alkylated or non-alkylated phenol and having an average number of phenolic hydroxyl groups per mol. of at least 2, and an organic nitrogen compound having the structural group <FORM:0813972/IV (a)/1> e.g. dicyandiamide, guanidine or melamine.  Proportions of 20-300 parts novolac resin, 100 parts epoxy resin and 0.1-8 parts nitrogen compounds are suitable.  The compositions are hardened by heating to 80-250 DEG  C. but stable precondensates may be obtained by cooling to below 50 DEG  C. before hardening starts.  In one example a composition consisting of 100 parts epoxy resin, 70 parts novolak resin and 1 part dicyandiamide is hardened by heating at 140-180 DEG  C. and from 13.2 to 8.3 hours. Specifications 636,696, 666,299 and U.S.A. Specification 2,521,911 are referred to.
Patent GB-802058-A (GB)
Title: Improvements in or relating to inductive devices
IPC: H01F41/04
Filed: 1956-09-05
Abstract: 802,058. Transformers. UNITED TRANSFORMER CORPORATION. Sept. 5, 1956 [Oct. 10, 1955], No. 27194/56. Class 38 (2). [Also in Group IX] A magnetic core for a transformer comprises a solid, hollow, flanged bobbin 3 fitted with a sleeve 5. The sleeve and bobbin are cut to minimize eddy currents and an effective air gap is provided by displacing the sleeve axially (Fig. 10). In manufacture a plastic (vinyl) sheath 14 is impregnated with solvent and applied over a transformer assembly of bobbin 3, windings 8, and sleeve 5, so that on evaporating the solvent the sheath contracts to compress the sleeve 5 against the bobbin. The whole is then impregnated with epoxy resin 13 (e.g. Epon). A toroidal saturating winding may be wound on the core. The bobbin may be provided with a number of flanges to give a plurality of winding windows.
Patent GB-1048013-A (GB)
Title: Method of recovering acrylonitrile monomer
IPC: C08F20/44
Filed: 1963-07-10
Abstract: Acrylonitrile and comonomers are recovered from an aqueous acrylonitrile polymer slurry by a method in which the crude slurry is fed to a vacuum evaporator to evaporate the gaseous monomers, the vapour is then condensed in a condenser of the type in which the vapour directly contacts the cooling fluid wherein all or a part of the filtrate from filtering the polymer slurry from which monomers and polymer have been removed is used as the cooling medium, the cooling medium is recycled with the surplus of the filtrate after absorbing the vapours of acrylonitrile and comonomers and used to form part of the monomer charge in subsequent polymerization.ALSO:Acrylonitrile and comonomers are recovered from an aqueous acrylonitrile polymer slurry by a method in which the crude slurry is fed to a vacuum evaporator to evaporate the gaseous monomers, the vapour is then condensed in a condenser of the type in which the vapour directly contacts the cooling fluid wherein all or a part of the filtrate from filtering the polymer slurry from which monomers and polymer have been removed is used as the cooling medium, the cooling medium is recycled with the surplus of the filtrate after absorbing the vapours of acrylonitrile and comonomers, and used to form part of the monomer charge in subsequent polymerization.
Patent GB-158654-A (GB)
Title: Improvements in, and relating to, electric cable-connectors, particularly for use with car-lighting dynamos and the like
IPC: H01R13/595
Filed: 1919-11-07
Abstract: 158,654. Miller, C. A., Miller, F. J., and Sanders, E. A. Nov. 7, 1919. Plug couplings and connectors. - A cable connector for a threecore lead from a carlighting dynamo, but applicable also to twocore leads comprises two insulating members a, h containing socket and plug contacts g, a<1> respectively. The lower member h is mounted in the dynamo yoke so that it is free to turn, sufficient slack being provided in the dynamo leads (not shown). The upper member a is formed on its upper surface with a central groove to receive the cable, from which the armouring has been removed, and with two smaller grooves lying parallel with the central one into which the separate cores are led, two in one and one in the other. The conductors are sweated into the plug contacts a<1> which lie under these grooves. The device is secured to the dynamo yokes by means which enable the cable to be led off at any required angle. A cover b for the block a presses upon the rubber insulation of the cable, which passes out through an opening in the side of the cover. It is secured to the yoke by a base flange b<3> with which is engaged by a ring e, fixed by screws to the yoke, to clamp the parts after they have been adjusted to the required angle. An alternative fixing means consists of a cage superfixed on the ccver b having an extended side opening for the cable to permit the connector to be rotationally adjusted.
Patent GB-281069-A (GB)
Title: Apparatus for the automatic control of arc lamps
IPC: H05B31/00
Filed: 1926-11-02
Abstract: 281,069. Turner, E. G. Nov. 2 1926. Arc lamps.-In an electric arc lamp of the type in which the electrodes are fed by an electric motor the current supply to which is regulated by a solenoid connected to the arc circuit, means are provided for switching off the current to the motor when the arc is broken; means are also provided for moving the carbons by hand when the motor is running and adjusting the contacts through which the circuit of the regulating solenoid is closed. For this purpose there is connected in series with the arc e, Fig. 7, an electromagnet s the armature a of which controls contacts c, c<1> in the circuit of the motor d. In this circuit there are also contacts f, g, the contact g being carried by the pivoted armature h of an electromagnet b connected with the arc circuit so that when the carbons are in contact the contacts f, g are closed by the electromagnet band the motor d separates the carbons. When the arc is broken the contacts c, c' separate and break the circuit of the motor d. The contact f is mounted on a spring f<1> adjustable by means of a screw f<2>. The electromagnets are mounted in a casing attached to the frame of the lamp and the motor d in a separate casing n, Fig. 6, whence it drives through the gearing shown, a worm wheel r' loose on the spindle p operating the carbons. The wheel r' is held between a disc t fixed to the spindle p, and a disc u thereon, which can be pressed against the wheel r<1> by a screw v, thus forming a friction clutch. The spindle p can be turned separately from the wheel r' by a milled head W.
Patent GB-792053-A (GB)
Title: Improvements in or relating to apparatus for producing ozone
IPC: C01B13/11
Filed: 1954-09-23
Abstract: 792,053. Treating gases with electric discharges. RHENO AKT.-GES. Sept. 23, 1954 [Sept. 24, 1953 ; Dec. 24, 1953 ; Dec. 24, 1953], No. 27516/54. Class 39(1). An ozonizer comprises conical electrodes 4 between which are located solid ozone-resistant conical dielectron elements 8. The electrodes and dielectric are connected to an insulating tube 3, having openings 7 between the electrodes, fixed to the cylindrical casing 1 having an inlet 2. At least part of the electrodes 4 is hollow for the circulation of cooling water. Alternate sets of electrodes are connected to the separate terminals of a high tension supply. At least one discharge surface is provided with areas having sharpened edges, e.g., corrugations, perforations or slots having sharp edges, or areas having sharp-edged, finely granulated material. An ozone-resistant photo-electric white metallic oxide such as zinc oxide is prvoided in the discharge space, e.g., on (if semi-conductive) at least one electrode, between an electrode and the dielectric, on the dielectric, in the dielectric or as the dielectric. The spacing between the electrodes is adjustable.
Patent GB-813824-A (GB)
Title: Improvements in and relating to electrical components
Inventor: MITCHELL FREDERICK CHARLES
IPC: H01C17/07
Filed: 1954-09-23
Abstract: 813,824. Printed resistors. PHOTO PRINTED CIRCUITS Ltd. Dec. 23, 1955 [Sept. 23, 1954], No. 27573/54. Class 37. A method of manufacturing an electric resistance as described in Specification 813,823 comprises the steps of forming a patch of insulating material on a sheet of metal foil, forming a layer of resistance material over the patch such that it extends beyond the patch in two opposite directions to provide overlapping ends, fixing the face of the foil bearing the insulating material and the resistance material to an insulating support by means of an adhesive mask of the same material as the insulating patch unit breaking the short-circuit between the overlapping ends by removing at least a part of the metal lying over the patch. The layer of resistance material is preferably formed by a method as described in Specification 813,821 in which a colloid containing suspended graphite is formed on the metal foil by means of a printing process and the adhesive cement is preferably a silicone resin or melamine.
Patent GB-187834-A (GB)
Title: Improvements in building walls and concrete blocks for the same
IPC: E04B2/28
Filed: 1921-10-18
Abstract: 187,834. Rochester, E., and Ingham, A. Oct. 18, 1921. Building-blocks.-In hollow concrete building- blocks having a waterproof layer embedded therein, the waterproof layers 7 of slate or the like are situated as shown. A further layer 7a is provided if the end of the block is to be exposed. Side channels and interlocking tongues and grooves may be provided.