baber/WOPTO huggingface dataset:
Patent GB-1512333-A (GB)
Title: Electrochromic display device
IPC: G02F1/1524
Filed: 1976-05-05
Abstract: 1512333 Electrochromic display devices TIMEX CORP 5 May 1976 [2 Sept 1975]  18503/76 Heading G2F An electrochromic display device comprises first and second spaced substrates 1, 2, substrate 1 having selectively actuable spaced electrodes 3, 4 thereon and substrate 2 mounting a counterelectrode 9, said electrodes each having thereon a layer 11, 12, 13 of an electrochromic material which, according to its oxidation state exhibits different optical, electrical and solubility properties, and an electrolyte between substrates 1, 2, the electrolyte being saturated with at least two of the more soluble states of said electrochromic material whereby it is stated that the degeneration of the electrochromic layers with time and temperature is reduced. The electrolyte may be carried in a porous separator 15 between the substrates, which separator may also carry a titanium oxide pigment to enhance the contrast of the display device. The electrochromic material may be tungsten trioxide, the electrolyte, which may be dilute H 2 SO 4 , being saturated with tungsten trioxide, hydrogen tungsten oxide and tungsten dioxide. Alternative electrolytes are tungsto-silicic acid and phosphoric acid. Reference has been directed by the Comptroller to Specifications 1414036-1356120.
Patent GB-122215-A (GB)
Title: Improvements in or relating to the Proportioning of Combustible Gaseous Mixtures.
Inventor: IONIDES ALEXANDER CONSTANTINE
IPC: G01N21/72
Filed: 1917-12-13
Abstract: 122,215. Ionides, A. C. Dec. 13, 1917. Jet photometers.-Apparatus for determining the proportions of a gaseous mixture of a combustible and a supporter of combustion, e.g. a mixture of coal gas and air to be burned in a closed furnace, comprises a burner formed of non- conducting material and provided either with a small flared orifice or with means for heating the mixture before it emerges from an ordinary orifice. The character and size of the flame produced indicate the proportions in which the gases are mixed. In the apparatus shown, the mixed gases are passed at a constant low pressure through a back-flash extinguisher c of the type described in Specification 12346/12, [Class 47 (ii), Fire-extinguishing &c.], to a silicaglass tube k having a flared orifice l. The character and size of the flame are observed against a semicircular screen m which may be graduated. The tube and screen are mounted within a tray a provided with a compartment n for the pressure gauge f when not in use. In a modification, the orifice of a horizontal silica-glass tube is not flared, but the tube is heated by a spirit lamp at some distance from its outlet. The screen m may be fitted with a movable pointer, or automatic means for recording the results may be added to the apparatus
Patent GB-394139-A (GB)
Title: Improvements in stencil blanks
IPC: B41L47/06
Filed: 1932-06-30
Abstract: 394,139. Stencils. ELLIOTT ADDRESS. ING MACHINE CO., 143, Albany Street, Cambridge, Massachusetts, U.S.A. June 30, 1932, No. 18511. Convention date, April 11. [Class 100 (ii).] A stencil-blank comprises a rectangular frame 1, a backing-sheet 5 of stiff material extending across the opening of the frame and attached thereto, and a sheet of stencil paper attached to the frame in front of the sheet 5 and provided with a stencilizable central portion, the sheet 5 having a panel 9 situated behind the central portion and partly attached to the surrounding border so that the panel forms a backing during the cutting and preliminary inking of the stencil and may be easily torn off before the stencil is put into use. As shown, the strip 5 is secured between frame members 6, 6a, and is scored or perforated along lines 2 to provide the detachable panel 9. Part of the panel is cut away to form a tab 3 which may be bent up and grasped for tearing out the panel ; alternatively the tab may extend the whole width of the panel.
Patent GB-649741-A (GB)
Title: Vacuum work holder
IPC: B25B11/00
Filed: 1948-07-09
Abstract: 649,741. Vacuum work-holders. CALHOUN, O. H., and CALHOUN. A. H. July 9. 1948. No. 18527. [Class 60] [Also in Group XXVI] A vacuum work-holder, particularly for holding aluminium sheet while being machined to form thin tapered skins to be incorporated as integral parts of the wings and fuselage of airplanes, has a marginal groove 14 containing a gasket 15; a number of very small channels 18, communicating with each other and with the gasket. groove, are formed in the upper surface 12 lying within the groove 14 and also in the upper surface 12' outside the groove whereby the underside of the gasket flap communicates with atmosphere. The channels 18 may be formed by a rotary fly cutter, and the lands may be flattened by sanding, grinding or milling. Exhaust ports 25 are provided near the gasket groove 14 with which they communicate by channels 29 of greater depth than the channels 18 so that air leaking past the gasket 15 is exhausted and prevented from passing under thework and tending to loosen it. Specification 646,862 is referred to.
Patent GB-1269393-A (GB)
Title: Preparation of benzene and xylene by disproportionation of toluene
IPC: C07C6/12
Filed: 1969-04-10
Abstract: 1,269,393. Disproportionating toluene. TORAY INDUSTRIES Inc. 10 April, 1969 [15 April, 1968], No. 18580/69. Heading C5E. In a process for disproportionating toluene to benzene and xylene in the vapour phase under elevated temperature and pressure, and in the presence of hydrogen and a solid acidic disproportionation catalyst, the reaction product is cooled to provide a liquid condensate component comprising xylene, benzene and impurities having boiling points near to that of benzene, and a gas component, these components being respectively liquid and gaseous at 25 C. and 760 mm. Hg pressure, and the liquid component is separated and distilled in a fractionating column to provide a xylene-enriched fraction and a benzene/impurities fraction, at least part of the latter being recycled to the disproportionation. The recycled liquid preferably comprises mainly benzene together with C 6-7  paraffins and cycloparaffins in minor amounts but at concentrations which are the highest at any point in the fractionating column. The column bottoms are separated into xylene, unreacted toluene, and high quality benzene. The gas separated from the disproportionation effluent may be recycled, supplemented as desired by fresh hydrogen-containing gas. Suitable catalysts include crystalline alumino-silicates, silica/alumina, boria/alumina and alumina/AlF 3 .
Patent GB-342243-A (GB)
Title: Improvements in and relating to high voltage cable installations
IPC: H01B9/06
Filed: 1930-06-18
Abstract: 342,243. Cables. FELTEN & GUILLEAUME CARLSWERK AKT.-GES., M³lheim, Cologne, Germany. June 18, 1930. No. 18590. Convention date, Aug. 20, 1929. [Class 36.] In order to increase the oil pressure in an oilfilled cable when the load on the cable is increased, the oil inlet pipes are provided with non-return valves which automatically close directly the oil in the cable expands. The lead sheath of the cable may be reinforced against the internal oil pressure by an armouring of steel wires or bands applied directly on the lead sheath. When the invention is applied to multi-core cables, the usual jute fillers are preferably omitted from the cables, the gusset-shaped spaces between the cores being filled with oil.
Patent GB-1096972-A (GB)
Title: Improvements in fluid filters
Inventor: STRIPP PETER WILLIAM
IPC: F02M35/024
Filed: 1963-05-10
Abstract: 1,096,972. Air filter. TECALEMIT (EN-GINEERING) Ltd. May 8, 1964 [May 10, 1963], No. 18592/63. Heading B1T. [Also in Division B5] A fluid filter comprises a flat casing formed from a lower body part 65 and a cover 67, a fluid inlet 72, a fluid outlet 66, and at least two fibrous filter elements 61, 62, 63, the edges of which are provided with rims interengaging with rims of adjacent elements as shown at 79, 76, 80, 77, and the outer edges of the interengaged elements are clamped at 71 between the body and the cover of the casing. To form an individual filter element, the edge of a fibrous sheet of vinyl chloride-acrylonitrile copolymer (see Specifications 1,027,333 and 1,027,335) may be compacted by a heated press. The fibrous sheet may comprise two outer layers of the copolymer and an inner layer of cotton linters or cellulose acetate fibres which will retain a film of oil. Filaments or strands may be provided in the filter material, as described in Specification 1,084,282. A rim is formed on the edge of the element by injection of a synthetic plastic into an annular space between the base and the press member. These rims may be of various shapes, Figures 6 and 8 - 14 (not shown), so as to engage with the rims of adjacent filter elements. The filter is suitable as an air filter for an internal combustion engine.
Patent GB-363677-A (GB)
Title: Improvements in and relating to protective arrangements for the windings of electricmachines
IPC: H02H3/16
Filed: 1930-06-18
Abstract: 363,677. Protective cut-out arrangements. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.-(Assignees of A. E. G.-Union Elektrizitats-Ges. ; 6, Gumpendorferstrasse, Vienna.) June 18, 1930, No. 18633. Convention date, June 20, 1929. Void [Published under Sect. 91 of the Acts]. [Class 38 (v).] Relates to the prevention of faulty operation of earth fault protective arrangements due to higher harmonics of the characteristic frequency as described in Specification 349,946. According to the invention wattmeter-type relays are used with one winding supplied with a measure of the current or voltage which indicates the fault and the other supplied with an interphase voltage. Two such relays may be necessary in some cases.
Patent GB-1374848-A (GB)
Title: High heat dissipation solder-reflow flip chip transistor
IPC: H01L21/60
Filed: 1972-04-21
Abstract: 1374848 Semi-conductor devices RCA CORPORATION 21 April 1972 [28 April 1971] 18669/72 Heading H1K A semi-conductor device, particularly suitable for "flip chip" bonding to an insulating substrate 83 carrying conductive tracks, comprises a semi-conductor substrate 2 with device regions 12a, 12b &c. therein, each region having conductive material contacts at the substrate surface, the surface and conductor material being covered by a glass layer 32, the layer having openings to allow connection with contact pads formed predominantly of solder provided on the glass layer, each pad having a thick, wide portion and a thin portion overlying a heat producing portion of the device. During "flip chip" bonding the thick solder pads are melted causing intimate contact between the conductive tracks and all parts of the contact pads, and a good thermal path between the heat producing portions of the device and the conductive tracks. The device may be a transistor with four separate, crescent shaped, emitter regions 12a, 12b (12c, 12d) Fig. 3 (not shown) above which the thin portions of the contact pads are later provided. The emitter regions are electrically connected together beneath the glass layer and finally are connected through the glass layer to pad 52. The base region 4 is connected to pad 64 via path 72 and connection 72 through the glass layer. The collector region 5 is connected to pads 42 and 56. The substrate may be of silicon, the layer 32 being of borosilicate glass, the electrical connections being of aluminium, zinc and nickel. A plurality of devices may be formed simultaneously.
Patent GB-255910-A (GB)
Title: Improvements in and relating to contact plugs for electrical connections
IPC: H01R13/05
Filed: 1926-07-27
Abstract: 255,910. Forth, C. R. July 27, 1925, [Convention date]. Patent abandoned on opposition. Plug couplings.-An electric pin for a coupling is formed from a single piece of brass &c. tubing, the pin portion a being thin and having longitudinal slits not extending to the ends and the lower portion b being of reduced diameter and preferably screwthreaded. The metal at the point of the pin may be turned inwardly.
Patent GB-992114-A (GB)
Title: Chemical process for treating bast fibres and products made therefrom
IPC: D01C1/02
Filed: 1961-05-24
Abstract: Lignin and pectin are eliminated from raw bast fibres by (1) heating the fibres in an aqueous solution of the hydroxide, carbonate, bicarbonate or borate of sodium or potassium, (2) rinsing the fibres with water, (3) immersing the fibres in an aqueous solution of hydrogen peroxide or sodium peroxide, an alkale metal chlorite or hypochlorite, or calcium chlorite, and adding a non-oxidizing acid to the solution at such a rate that the chlorine or oxygen evolved combines with the lignin and pectin-containing constituents of the fibres to liberate the fibres, but is not at any time present at a sufficient concentration to attack the fibres.  The fibres are finally rinsed with water.  The acid used may be hydrochloric acid, acetic acid, formic acid, lactic acid or citric acid.
Patent GB-1464052-A (GB)
Title: Life saving chute
IPC: A62B1/20
Filed: 1975-05-05
Abstract: 1464052 Escape chutes A KATSUBE 5 May 1975 18801/75 Heading B7J An escape chute comprises a plurality of descending passages 10, 11, 12, 13, each composed of a flexible fire-proof cloth tubular member 18 and a bottom member 19 of the same material and disposed in any one of a plurality of columns which are vertically orientated during use, each pair of the passages, e.g. 10, 11 being disposed in different ones of the columns and having an opening 21 therebetween for permitting escaping persons to move from an upper 10 to a lower 11 one of the passages, all of the passages 10 to 13 being open at 20 to the outside to admit escaping persons. Frames 23 are arranged in the flexible material which latter can be collapsed. Cut-away parts of the tubular members are provided with elongate flexible members 24 between the frames 23. The whole chute is supported by a hanger 26 and each passage has a flexible elongate gripping member 27 hanging therein. With this chute, persons may escape from different storeys of buildings.
Patent GB-1377575-A (GB)
Title: Catamenial appliances
IPC: A61F13/15
Filed: 1972-04-22
Abstract: 1377575 Catamcnial appliances SOUTHALLS (BIRMINGHAM) Ltd 22 April 1972 18803/72 Heading A5R A sanitary towel which comprises an absorbent core 11, a soft fabric cover 12, and a plastics tape 14 provided with a pressure-sensitive adhesive is manufactured by applying a continuous plastics tape to a continuous line 10 of sanitary towels. The plastics tape is drawn from a roll 15 and passes by way of a guide roller 16 over a coating roller 17  provided with a pair of discontinuous, raised ribs 18 upon its cylindrical surface. A liquid adhesive, e.g. a vinyl acetate/acrylic copolymer blend, is coated onto the rib surfaces and is transferred onto the tape to form lines 19 of adhesive, gaps occurring between successive lines corresponding to the discontinuity of the ribs. A roller 13 presses the tape onto the line 10, which leaves a forming machine (not shown), and onto the fabric cover surface which is folded and overlapped such that the adhesive is applied onto the folded side of each towel and thus secures overlapping portions of the cover together. The gaps between the adhesive lines 19 correspond to the gaps between the cores 11 of the towels in the line, and the cover material, which may be non-woven. may be heat sealed, or otherwise sealed together at this point so as to completely enclose the core when the individual towels are produced. The wet adhesive soaks into the cover material and ensures that the plastics tape is easily peelable from the towel previous to adhering the towel to a wearer's undergarment. A single line, patch or patches of adhesive may alternatively be provided on the towel.
Patent GB-695723-A (GB)
Title: Improvements relating to fluid pressure governors
Inventor: WILSON ARCHIBALD HAMMOND
IPC: G05D16/06
Filed: 1950-07-28
Abstract: 695,723. Diaphragm pistons. EVERED & CO.. Ltd. Oct. 29, 1951 [July 28, 1950], No. 18852/50. Class 122(i) [Also in Group XXIX] In a diaphragm-actuated pressure-regulating valve of the kind in which the diaphragm 6, Fig. 1, is subject to outlet pressure, the diaphragm is moulded from a thermo-plastic material e.g. polythene or polyvinylchloride. The diaphragm is clamped between a plate 8 carried on the stem of the valve 4 and a nut 9 screwed on to the upper end of the stem. The nut 9 may be formed on the upper face of the diaphragm during the moulding operation.
Patent GB-1168447-A (GB)
Title: Methods and Apparatus for Packaging Cigarettes and Other Rod-Like Articles
Inventor: RUDSZINAT WILLY
IPC: B65B19/24
Filed: 1966-10-04
Abstract: 1,168,447. Packaging cigarettes etc.; rotary conveyers. HAUNI-WERKE KÍRBER & CO. K.G. 4 Oct., 1966 [12 Oct., 1965], No. 19023/69. Divided out of 1,168,446. Headings B8A and B8C. Means for forming blocks of articles such as cigarettes in pockets of continuously moving conveyer, e.g. a rotating turret, comprises means for continuously feeding cigarettes along a path with control means at the end of the path permitting progressive filling of the moving pockets. In one form, the feed means comprises a shoot feeding cigarettes from a store of them to the pockets and moving temporarily with the pockets during the filling. A single shoot 392 divided by partitions to accommodate three rows, follows and fills each pocket over a portion of its travel and then returns to fill the following pocket. The lower portions 412 of the partitions are extended or retracted by cam means 418 to equalize their spacing from the pocket mouths. A catch 436, 438, 440 carried adjacent the shoot exit, includes a roller 448 which is engaged by projections 454, 452 at the trailing side of each pocket to open gates 422, 424, 426 at the shoot exits to release the cigarettes. The projection 454 is engaged by the adjacent gate 422 to pivot the shoot about point 394 against a spring 456. Each pocket includes a radially movable base member 458, the base-forming surface of which is shaped to produce the staggered cigarette formation required. The member moves downwards as the pocket fills. At the end of its travel, the shoot abuts a stop 398. The projection 454 closes the adjacent gate 422 and consequently the other gates which are linked to it, and also resets the catch. The shoot is now free to be swung by the spring 456 back against a stop 396 to pick up the next pocket. In another embodiment, a series of stationary shoots terminate in rotary feeders adjacent the rotating turret. This form is fully described in the parent Specification.
Patent GB-1474487-A (GB)
Title: Process for producing polyolefins
IPC: C08F4/00
Filed: 1975-05-06
Abstract: 1474487 Polymerization catalysts NIPPON OIL CO Ltd 6 May 1975 [13 May 1974] 19040/75 Heading C3P An olefin polymerization catalyst comprises (a) a Ti and/or V compound, (b) an organometallic compound, and (c) a composite carrier consisting of (i) a product resulting from the SO 3 -treatment of Al 2 O 3 , and (ii) a magnesium and/or a calcium compound; the catalyst is used to polymerize olefins at a temperature of 20-300‹ C. and a pressure of 1 atmosphere to 70 kg. /cm.<SP>2</SP>. In the examples, (a) comprised TiCl 4 , TiCl 2 (OBu) 2 , VCl 3 , TiCl 3 .<SP>1</SP>/ 3 AlCl 3 , (b) comprised Al(Et) 3 , Al(iBu) 3  and (c) (ii) comprised MgCl 2 , MgO, Mg(OH) 2 , the product of reacting Mg(acetate) 2  with Al (isopropoxide)3, and CaSO 4 .2H 2 O; ethylene, either alone or in admixture with propylene was polymerized in the presence of hexane.
Patent GB-820283-A (GB)
Title: Improvements in the translation of symbols into electric signals
IPC: G06V30/224
Filed: 1956-06-21
Abstract: 820,283. Statistical apparatus. REUMERMAN, T., and HELMIG, W. H. T. June 21, 1957 [June 2, 1956], No. 19260/56. Class 106 (1). [Also in Group XL (b)] Symbol representations having identifying code markings are simultaneously scanned by at least two separate scanning systems whose outputs are compared so as to obtain a majority result which is supplied to an evaluating circuit. In one embodiment, an apparatus having two independent scanning systems including photocells 13, 14, Fig. 2, is arranged to scan symbol representations having two sets of code markings 3, 4, 5 and 6, 7, 8 respectively, Fig. 1. As the scanning unit 10 moves in a downward direction the markings 3, 4, 5 produce pulses in the photo-cell 13 and the markings 6, 7, 8 produce pulses in the photo-cell 14 simultaneously with the corresponding pulses in the photo-cell 13. The outputs of photo-cells 13, 14 are applied to respective amplifiers 15, 16, the outputs of which are connected directly to first control grids of tubes 19, 20, and through phase-inverting tubes 17, 18 to second control grids of the tubes 20, 19 respectively. The tubes 19, 20 are so biased that they pass current only when the two control grids in each tube are positive. When the results of the scannings of the two photocells are identical one grid in each tube 19, 20 is made negative, but when different scanning results arise, both grids of one of the tubes 19, 20 becomes positive and the current through this tube operates a relay 21. The relay 21 energizes a repeat device 23 causing the scanning unit to repeat the scanning of the marking giving rise to different scanning results. If the markings are defective, the scanning will be repeated indefinitely and an alarm may be switched on by a counter after say three repetitions. In an embodiment stated to be more suitable for cases in which defective markings occur, symbol representations have three separate sets of code markings, each set of markings being scanned by means of a corresponding one of three separate photo-cells 27, 28, 29, Fig. 3. The amplified outputs of the photo-cells are applied separately to control grids of tubes 33, 34, 35 which have a common cathode resistor 36 which is coupled to the control grid of a tube 37. The arrangement is such that the tube 37 passes current only when at least two of the amplified outputs of the photo-cells are positive, so that the tube 37 is responsive to the result obtained from the majority of the scanning systems. The sets of markings on the symbol representations may be differently oriented, or only one set of markings may be provided which is simultaneously scanned by the independent scanning systems. The scanning means may also comprise cathode-ray tubes, contact brushes, magnetic reading heads, mechanical feelers operating electric contacts and radio-activity sensing devices.
Patent GB-478301-A (GB)
Title: Improvements in coloured or decorative glass and in the method of producing such glass
IPC: C03C17/02
Filed: 1936-07-13
Abstract: 478,301. Colouring glass surfaces. PARKINSON, F. D. July 13, 1936, No. 19375. Drawings to Specification. [Class 56] Glass is given a " shot appearance when viewed by transmitted light by giving it integral or applied projections and colouring all the surfaces facing in one direction in the same way and leaving other surfaces untouched or colouring them in a different way and then firing. During firing, applied projections may vaporize. The colour may be applied by spraying in different directions and at different angles and may be in the form of dispersions in toluol, alcohol, or water or may be blown dry after the surfaces have been coated with adhesives. Alternatively the colours may be applied by means of transfers. The projections may be small, e.g. those formed by sand blasting the glass surface or may be coarse-grained enamels or viscous liquids used plain or with colours dispersed in them.