baber/WOPTO huggingface dataset:
Patent GB-907482-A (GB)
Title: Electrical capacitors and method of production
IPC: H01G13/00
Filed: 1960-04-29
Abstract: 907,482. Capacitors; glass to metal seals. CORNING GLASS WORKS. April 29, 1960 [May 5, 1959], No. 15157/60. Classes 36 and 37. A capacitor element 12, Fig. 1, is hermetically sealed in a two-part glass capsule 14, e.g. as disclosed in Specification 690,364, the electric leads extending through the glass casing being formed of a relatively inflexible metal having a thermal coefficient of expansion similar to that of the glass capsule, to each of which leads is attached a flexible portion outside the glass capsule. In the embodiment described soft glass having a coefficient of expansion around 100-105 x 10<SP>-7</SP> cm/cm/‹ C. is employed. The leads are composed of a base material 28, Fig. 2, such as 430 Ti stainless steel or e.g. a 52% nickel 48% iron alloy, having plated or cladded surface layers 30, of about 1-2 mils thick composed of a high-conductivity metal e.g. copper. A flexible conductor wire 26 is attached to each unit 28, 30 by welding or otherwise. The fusing of the leads to the glass capsule is achieved in a separate operation by filling a groove 36, Fig. 3, with powdered soft sealing glass which is viscous at around 450‹ C., e.g. lead borate glass. Specification 629,049 also is referred to.
Patent GB-1385383-A (GB)
Title: Light valve
IPC: G02F1/17
Filed: 1972-03-30
Abstract: 1385383 Modulating light RESEARCH FRONTIERS Inc 30 March 1972 [31 March 1971] 15163/72 Heading H4F In a light valve wherein particles suspended in a fluid are controllably aligned by an electric and/or magnetic field to vary the optical transmission or reflection characteristics of the valve, thermal convection currents are used to produce fluid flow in the valve and prevent agglomeration of the particles. As described, one or more conduits connect opposite edges of the valve, being disposed externally of, or formed integrally with, the valve. In use the fluid flow in the valve is vertical or horizontal, heat from an electric, convective or radiant heat source being applied to a part of the system where upwards fluid flow obtains, e.g. in the conduit or below a vertical valve. Alternatively, if for example the valve forms a window in a building, an external conduit may be disposed within or without the building, the temperature differential between the building and the atmosphere producing convective flow. The particles may be light absorptive, or reflective, dichroic, polarizing, birefringent, metallic or non-metallic. They may be of herapathite, graphite, mica, garnet red, aluminium, periodicles of alkaloid sulphate salts.
Patent GB-239948-A (GB)
Title: Improvements in or relating to bottling and like apparatus
IPC: B67C3/24
Filed: 1924-06-25
Abstract: 239,948. Headly, L. C. June 25, 1924. Bottling. - In a machine for filling bottles, jars, &c., a plunger 9 supporting a bottle 1 and' slidable in a guide 7 is actuated by a cam 13 mounted on a rock shaft 14 provided with a hand lever 15 or connected to a foot lever or power.. The plunger 9, which is hollow, is provided with a central socket adapted to receive a stalk &c. secured to the underside of a removable circular plate 10 recessed to receive the bottle 1. As shown, the shaft 14 carries two wiper cams 13 arranged to act in opposition to each other, so that a filled bottle is lowered as an empty one is raised, and each cam 13 is formed with a flattened end 13a to lock the plunger 9 in the raised position, the operating handle 15 being disposed between the cams 13. A roller or other antifriction device may be interposed between the cam 13 and the plunger 9. The rock shaft 14 passes through the lower parts of the guides 7 which are mounted on a cross-bar 8 adjustably carried by the framing of the machine.
Patent GB-158488-A (GB)
Title: Improvements in and relating to electric lamps with luminous discharge
IPC: H01J17/40
Filed: 1914-06-06
Abstract: 158,488. British Thomson - Houston Co., Ltd., (General Electric Co.). June 6, 1914. Vacuum tubes. - A lamp contains a rarefied gas, preferably one of high conductivity such as neon, and electrodes consisting of metal cups mounted on a common stem 13. To increase the surface of the electrodes, each may comprise a number of coaxial cups 6, 12, preferably of aluminium free from iron &c. The two electrodes may be substantially identical, so that direct current may be passed in either direction, or alternating current employed. The bulb may be similar to that of an incandescent lamp. It may be heated during exhaustion, and washed out with a gas such as nitrogen, after which it may be rinsed once or twice with the gas such as neon, which is to be finally introduced. Such lamps may be connected in parallel, and may start at ordinary electric pressures; if necessary, however, a higher pressure for starting may be applied to the parallel lamps by means of a series inductance and a shunt circuit-breaker. A resistance may be connected in series with the lamps, to stop destructive arcing. According to the Provisional Specification, the lamps may contain nitrogen instead of neon.
Patent GB-355678-A (GB)
Title: Process of producing magnesian portland cements
IPC: C04B7/02
Filed: 1930-05-19
Abstract: Magnesian Portland cement is produced by including in the mix a quantity of iron or manganese oxide which amounts to two-thirds of the magnesia in the case of a percentage of 5 per cent magnesia and decreases to one-fifth with 40 per cent magnesia.  A table is given showing the correct amount of iron oxide to include for cements with various percentages of magnesia.  The magnesia is combined in a form similar to deadburnt magnesite and to effect this an extended period of sintering of about 20 minutes which can be controlled with shaft furnaces by regulating the supply of air, or with rotary furnaces by providing an enlarged sintering zone, is given.  Examples of mixes illustrating the invention are given.
Patent GB-529652-A (GB)
Title: Improvements relating to electric signalling systems
IPC: H03K7/00
Filed: 1939-05-24
Abstract: 529,652. Transmission systems. KOLSTERBRANDES, Ltd., and BEATTY, W. A. May 24, 1939, No. 15365. Addition to 524,671. [Class 40 (iv)] The parent Specification describes a method.of representing sound or other waves by pulses of constant frequency but of duration varying with the wave amplitude, each pulse commencing or terminating with a relatively short marking pulse of different amplitude. According to the present invention, such pulses of two different amplitudes are obtained from original'square-topped pulses of variable duration by deriving from such pulses a series of short pulses corresponding to the commencement or end thereof and combining them additively or subtractively with the squaretopped pulses. Specification 528,192, [Group XL], describes, for television, a method of deriving from rectangular pulses a series of short marking pulses and of combining the two sets after delaying one. In the present method, such delay is not required and if the marking pulse deriving circuit introduces a slight delay, the square-topped pulses are fed to the combining circuit over a channel providing the same delay so that the two sets of pulses are properly superimposed. The receiver has arrangements for separating the. two sets and comprising a back-biassed valve which passes only the increased amplitude of the marking pulses and a saturated diode or pentode which passes only the main portions of the pulses. The separated sets are used as described in the parent Specification. Specification 523,575 also is referred to.
Patent GB-1020029-A (GB)
Title: Facing cutters
IPC: B23C5/20
Filed: 1963-04-19
Abstract: 1,020,029. Milling-cutters. UDDEHOLMS A.B. April 19, 1963 [April 24, 1962], No. 15434/63. Heading B3K. A face-milling cutter comprises at least one smoothing blade 10 set to project axially in front of other blades 3 which are set on a larger diameter. The blades are secured by wedges 5 and screws 4, and by a ring 6 secured to the body by screws 7. The blade 10 may be adjustable axially by screws, may be seated on a wedge 13 adjustable by screws, and may have three rounded edges.
Patent GB-961423-A (GB)
Title: Valved bags
Inventor: WALKER FRANK
IPC: B65D30/24
Filed: 1961-04-28
Abstract: 961,423. Making valve bags. BRITISH VISQUEEN Ltd. April 4, 1962 [April 28, 1961; Nov. 14, 1961; Dec. 6, 1961], Nos. 15459/61, 40699/61 and 43703/61. Heading B5D. [Also in Division B8] A valve is formed in the wall of a bag of thermoplastic material by an aperture 2, 8 covered, internally or externally, by a patch 3. In the arrangement shown the patch is welded on the outside of the wall at 4, 5, 6 and a thinner flap 10 is welded inside along the line 9. In an alternative arrangement, where the patch 3 is inside the bag, the flap 10 is welded near the edge 7 of the patch 3. The wall 8 of the aperture may be curved or formed with slits parallel to the weld 5, similar slits being formed in the patch 3 when this is arranged internally. The edge 7 of an external patch may be curved convexly towards the opening 2, 8. The flap 10 may be spot welded at spaced points to the wall of the bag to prevent the patch falling back on itself. The bag may be formed from a web of lay-flat tubing welded transversely, the weld 30 adjacent the valve being made only after the valve has been constructed. The bag may be of polythene or polyvinyl-chloride film, preferred thicknesses being suggested in the Specification. The patch 3 is preferably of similar material but the flap 10 is thinner. The bag may, however, be formed by stitching or gluing. An insert of P.T.F.E. may prevent undesired welds when the valve is being welded.
Patent GB-297314-A (GB)
Title: Collapsible chuck
IPC: B29D30/24
Filed: 1928-05-25
Abstract: 297,314. Goodyear Tire & Rubber Co., (Assignees of Tempelton, E. G.). Sept. 17, 1927, [Convention date]. Mandrels.-A collapsable mandrel for use in building straight sided tyres with inelastic beads comprises arcuate segments 22 - - 25 pivoted in pairs at 9 to the opposite ends of an arm 4 secured to a shaft 12 which supports and rotates the chuck. The segments 22, 23 one being from each pair, are connected by toggle links 19 to opposite ends of an arm 13 freely rotatable on the shaft 12, and connected by spaced rods 18 to a hand wheel 17 whose rotation expands or collapses the chuck. Outward movement of the segments is limited by their right-angled heel portions a coming into contact and their free ends are scarfed as at 11 so that the shorter segments, to which the links 19 are attached, will oscillate the longer segments 24, 25 during expansion of the chuck. The segments carry hinge parts 8, 21 by which they are mounted on the pivots 9 and the links 19 respectively, and the arm 4 is dished at 5 to allow the toggles to act, centrally on the segments. A stop 26 on the arm 4 limits movement of the hand wheel in both directions.
Patent GB-859452-A (GB)
Title: Dicarbocyanines
Inventor: FRY DOUGLAS JAMES
IPC: C22C38/44
Filed: 1958-05-14
Abstract: Dicarbocyanine dyes are prepared by reacting 2 molecular equivalents of a 2- methylbenzthiazolium salt with 1 molecular equivalent of a pyrimidine compound of the general formula:  <FORM:0859452/IV (c)/1> wherein R1, and R2 are hydrogen, or alkyl, aryl or aralkyl groups, or R1 is a carboxylic acyl group, in the presence of an acid binding agent.  Examples are given of the reaction of a 2- methylbenzthiazolium salt, which may contain a 5-chloro-, 5- methyl-, or 6- phenylsubstituent, with 2- aminopyrimidine, 2- acetaminopyrimidine or 2- methylaminopyrimidine, all in the presence of pyridine. According to the Provisional Specification, the 2- methyl group of the benzthiazolium salt and the 5- position of the pyrimidine compound may be substituted with alkyl, aryl or aralkyl groups.
Patent GB-353586-A (GB)
Title: Improvements in or relating to laces particularly for shoes
IPC: A43C9/02
Filed: 1930-05-20
Abstract: 353,586. Laces ; lacing - fastenings. WISEBURGH, J., 59, Shacklewell Lane, Stoke Newington, London. May 20, 1930, No. 15524. [Class 43.] A retaining device for an elastic lace has a centra aperture 2 of slightly smaller diameter than the normal diameter or greatest width of the lace 3 and a gap 4 arranged to one side of and tapering into the aperture, the greatest width of the gap being slightly larger than the diameter of the aperture, so that the device may be applied to the lace at any desired point and centralized thereon by a lateral movement when the lace is extended, and secured in the desired position when the tension on the lace is released. In a modification, an aperture 7, Fig. 4, is provided in place of the gap 4 so that the retaining device may be slipped on the lace from its end and afterwards centralized thereon. The edge 5 of the aperture 2 may be turned slightly outward so that the sharp inner edge presses into the lace and prevents it being slid along the lace except in one direction, or the edge of the aperture 2 may be provided with prongs or spikes 6, Fig. 4. The device may take the form of a shallow cupshaped disc which may be furnished on its underside with a tubu ar extension 8, Fig. 6, of slightly conical formation and having a slot 9 of sufficient width to permit the device to be placed on the lace when the lace is extended. An inwardly directed projection 10 in the extension 8 serves to locate the device in any position on the lace.
Patent GB-594906-A (GB)
Title: Electro-magnetic friction clutch
IPC: F16D27/08
Filed: 1945-06-19
Abstract: 594,906. Friction clutches. HUMBER, Ltd., and SAMPIETRO, A. C. June 19, 1945, No. 15528. [Class 80(ii)] In an electromagnetically-operated friction clutch having a driven (or driving) member engaged between two mutually axially movable driving (or driven) members respectively fast with an electromagnet and its armature, the latter co-act through spaced frustro-conical or other surfaces inclined at an acute angle to the clutch axis so that the torque capacity of the clutch is relatively unaffected by frictional wear. As shown, a driven clutch disc 27 is engaged between a driving disc 32 and a presser plate 31 both mounted on an input shaft 14, the former rigidly through the core 13 of the magnet 12, and the latter with axial play through resilient spiders 21, 22, the armature 17 and a casing 35. The core 13 and the magnetically co-acting portion of the armature 17 are both of L-section and mutually define frustro-conical air gaps 37, 38. In Fig. 2 (not shown) the resilient spiders are omitted and the presser plate and casing are slidably spring-biassed to disengage on axial pegs fixed in a radial extension of the magnet core. The casing may be a sheet metal pressing as shown, or of thickwalled light alloy construction. Adjustment of the air gaps may be provided for by making the casing in two or more mutually screw-threaded portions. The positions of the magnet and the armature may be reversed.
Patent GB-476565-A (GB)
Title: Improvements in or relating to electric condensers
IPC: H01G9/12
Filed: 1936-06-03
Abstract: 476,565. Electrolytic condensers. DUBILIER CONDENSER CO. (1925), Ltd. (Dubilier, W.) June 3, 1936, No. 15545. Addition to 476,617. [Class 37] [Also in Group XVII] The spacing member G<3> described intheparent Specification, when it limits the outward movement of the diaphragm G under pressure, forms a closed space between the outer cap F and the part of the diaphragm in the region of the puncture G<2>. The spacer G3 may be integral with the diaphragm, as shown, or with the cap F. The part C<1> of the diaphragm surrounding the puncture may be thinner than the remainder. The construction of condenser shown has a pleated anode C supported on a rod C <1> forced through a plug D of rubber &c. in a neck A' of the container. The lower part of the neck is pressed or spun inwardly. Specifications 438,934 and 476,688 are referred to.
Patent GB-971028-A (GB)
Title: Improvements in excavating machines
Inventor: SMITH REGINALD GEORGE
IPC: E02F3/32
Filed: 1962-04-24
Abstract: 971,028. Earth-excavating machines. WHITLOCK BROS. Ltd. April 4, 1963 [April 24, 1962], No. 15563/62. Heading E1F. Supported on a mobile chassis 1 for rotation about a vertical axis 2 is a slewing member 3 on which is pivotally mounted about a vertical axis 10 offset from the first axis 2 a boom 12. The boom, which can be vertically swingable, may, as desired, support a bucket wheel or ladder, shovel units, or drag line scraper assemblies. The boom may be caused to retain - its direction relative to the chassis during rotation of the member by suitable linkage.
Patent GB-1453883-A (GB)
Title: Intensive horticulture
IPC: A01G9/24
Filed: 1974-04-09
Abstract: 1453883 Intensive horticulture M N J WOMBWELL 9 April 1975 [9 April 1974 27 Aug 1974] 15570/74 and 37324/74 Heading A1E Apparatus for intensive horticulture comprises a translucent enclosure 2 having ventilation panels 3, 9 each formed of two or more wire mesh screens of successively decreasing mesh aperture size from the exterior to the interior of the enclosure, so as to act as draught and insect excluders, as well as reducing aerodynamic uplift of the enclosure. Perforated black plastics bags or pots 7, containing a culture medium, are inserted into a water-bearing material, such as soil, sand &c, which is covered by a black plastics sheet 5 to restrict evaporation from the material into the enclosure's atmosphere. Irrigation is by means of perforated tubes 10 passing through the water-bearing material. Thus, roots are watered, whilst foliage is not exposed to excessive moisture due to layer 5 and the ventilation, and hence the problem of rotting is reduced. The water-bearing material may be placed in a plastics tank to conserve its moisture. For seedling growth, a high moisture content is achieved near the culture medium's surface by placing a circular black plastics sheet, having a central aperture for plant growth therethrough, on the medium's surface in each bag or pot 7, this sheet being removed after sufficient plant growth. The irrigation system may alternatively supply fertiliser, or sterilising liquid or steam, instead of water.
Patent GB-1422089-A (GB)
Title: 14-oxobicyclo 10-4-0- hexadec-1-12-ene, 14-oxo-bicyclo-10-4-0-  hexadec-12-ene, 14-oxobicyclo 10-4-0-hexadecane and processes  for their preparation
IPC: C11B9/00
Filed: 1974-04-09
Abstract: 1422089 Oxobicyclohexadecene and oxobicyclohexadecane STEPAN CHEMICAL CO 9 April 1974 15579/74 Heading C2C The invention comprises 14 - oxobicyclo [10.4.0]hexadec - 1(12) - ene, 14 - oxobicyclo [10.4.0]hexadec - 12 - ene and 14 - oxobicyclo [10.4.0]hexadecane. The unsaturated compounds may be prepared by condensing cyclododecanone with an amine, reacting the product with methyl vinyl ketone to form an internal salt which is hydrolysed to give 2-(3-oxobutyl)- cyclododecane which is subsequently cyclized in the presence of a base. The unsaturated compounds may be hydrogenated to give 14- oxobicyclo[10.4.0]hexadecane.
Patent GB-1203940-A (GB)
Title: Improvements in or relating to coherent tobacco products
IPC: A24B15/12
Filed: 1967-11-28
Abstract: 1,203,940. Reconstituted tobacco. GENERAL CIGAR CO. Inc. 28 Nov., 1967 [1 Dec., 1966], No. 15660/70. Divided out of 1,203,939. Heading A2C. A coherent tobacco product with appreciable wet strength, e.g. formed into sheets for use as cigar wrapper material, comprises a major proportion of comminuted tobacco, a minor proportion of refined cellulosic fibres, and a minor proportion of at least one water-insoluble acetylated form of an originally water-soluble cellulose derivative. The refined cellulosic fibres may be derived from tobacco fibres produced from stems and other waste tobacco, or derived from softwood pulp. Suitable water-insoluble acetylated cellulose derivatives exemplified are water-soluble forms of methyl cellulose and hydroxy ethyl cellulose rendered water insoluble by acetylation. The product may include ceramic fibres and titanium dioxide. The product ingredients are formed into a sheet by the method disclosed in Specification 1203939.
Patent GB-311120-A (GB)
Title: Razor convertible into a blade stropping or sharpening device
IPC: B26B21/50
Filed: 1928-05-29
Abstract: 311,120. Cook, P. May 29, 1928. Stropping - apparatus. -A safety razor frame 6 carries an abrasive roller 20 and a pivoted blade holder 14 the roller 20 and the holder 14 being geared together so that when the guard 7 is out of engagement, as shown dotted in Fig. 2, and the roller 20 is rolled over a surface, opposite sides of the cutting edge are sharpened alternately. The roller 20 is secured frictionally to its spindle 21 to cause reversal of the blade at the end of each sharpening stroke. During each stroke the roller revolves on its spindle. A honing roller 3, secured by a nut '2, forms the razor handle, the rollers 3, 20, being interchangeable. In a modified form of abrasive roller the spindle is in two parts 25, 26, Fig. 7, pressed apart by a spring, one end of the spindle being conical. The roller has a portion of leather or other abrasive material of spiral formation. If the posts 18 are removed from the holder 14 the device may be used for sharpening blades of varying types.
Patent GB-1114622-A (GB)
Title: Improvements in or relating to manually operable control devices for gas burners
Inventor: RADLEY STEWART ALBERT
IPC: F16K31/02
Filed: 1965-04-13
Abstract: 1,114,622. Burner controls. RADIATION Ltd. 28 March, 1966 [13 April, 1965], No. 15700/65. Heading F4T. A control device for a gas burner has, in a housing, a gas valve (17), a transformer 13 and a microswitch 15 in the circuit thereof, a lever 5 in an aperture (4) in the housing; lid being operable from outside the housing to energize the ignition circuit and open the gas valve in a single operation as well as operate the stem 27 of the valve of a thermoelectric safety device, the housing being constructed to fit over the latter device.
Patent GB-1092608-A (GB)
Title: Centrifuge for continuous deoiling of metal cuttings
IPC: B04B7/04
Filed: 1966-04-07
Abstract: 1,092,608. Spin driers. C. R. STEIMEL. April 7, 1966 [April 9, 1965], No. 15723/66. Heading F4G. A spin drier for continuous removal of oil from metal cuttings comprises a resiliently mounted motor 2 driving a drum 3 formed with an upwardly and outwardly steeply-inclined wall portion 3<SP>11</SP> and at its upper end a cylindrical wall portion 11, openings 12 produced by spacing discs 15 being formed therebetween for the outflow of the oil. A filter 16 covers the openings 12 and the upper end of the wall part 11 has a flange 17 over which the de-oiled cuttings pass into a chamber having a reinforced wall 26 against which the cuttings are projected and then are removed by a slideway 27 to an outlet 28. The slideway is secured to the side wall 22 of a fluid receiving container 20 which surrounds the drum 3 to just below the flange 17, and the oil is removed through a drain 21. The base of the container 20 is secured to a hood 25 about the motor 2 to vibrate both the container and also the slideway 27 secured thereto. A feed funnel 32 projects through an upper cover 31 of the drier into the drum interior and vibrations from the slideway 27 and wall 26 are transmitted thereto. A grid 34 is mounted in the funnel to prevent large cuttings entering the drum. In a modification a feed worm 50 is mounted in the funnel. Vibrations may also be generated by a counterweight 41 secured to the drum 3.