baber/WOPTO huggingface dataset:
Patent GB-1384167-A (GB)
Title: Shadow mask colour picture tube and method of fabrication
IPC: H01J29/32
Filed: 1972-05-23
Abstract: 1384167 Luminescent screens RCA CORPORATION 23 May 1972 [28 May 1971] 24104/72 Heading H1D In the manufacture of a multi-dot or multiline colour television screen by a photo-resist process, the sizes of the leaving tolerance (shortest distance from a beam landing area to the edge of the phosphor area) and of the clipping tolerance (shortest distance between a phosphor area and an adjacent beam landing area on a different colour phosphor) may vary undesirably over the area of the screen; such variation is measured and corrected by varying the sizes of the phosphor areas without altering their shape. In the case of circular phosphor dots the clipping tolerance can be increased and the leaving tolerance reduced by reducing the diameter of the dot; conversely the clipping tolerance can be reduced and the leaving tolerance increased by increasing the diameter of the dot. A completed screen is examined with a microscope and the variations in dot diameter required for each colour are measured at various points over the area of the screen; the variations may be designed to equalize clipping and leaving tolerances or to make the clipping tolerance always larger than the leaving tolerance. From the measurements, contours of equal variation are plotted separately for each colour and used to produce filters which are incorporated in the "lighthouse" used in the photo-resist process to produce a corresponding variation in light intensity which will vary the dot sizes as required.
Patent GB-1447711-A (GB)
Title: Apparatus for use in effecting gas-liquid contact
IPC: C07C51/215
Filed: 1974-05-31
Abstract: 1447711 Gas-liquid contact apparatus; oxidation apparatus A B TJUTJUNNIKOV B N TJUTJUNNIKOV A N MARCHENKO V L BURIN I M BOLOTIN A S DROZDOV L P KOVAL Z V DIDENKO G V LJUBUSHKIN J M BUDNIK V D MOSKVIN and D M BOLYANOVSKY 31 May 1974 24122/74 Headings B1F, B1R and B1X [Also in Division F4] A countercurrent bias-liquid contact column for heat and mass exchange, e.g. for the oxidation of paraffin hydrocarbons in the production of synthetic fatty acids, comprises a cylindrical shell 1 containing a plurality of vertically spaced transverse partitions 8 each provided with one or more openings accommodating downflow pipes 9 for the passage of liquid from the overlying transverse partition 8 down to the underlying one, and bubble caps 10 located above each of said downflow pipes 9. Each partition 8 is of inverted frusto-conical shape and includes a perforate area 11 surrounding each pipe 9, the perforations enabling upward throughflow of gas. The lower end of each downflow pipe 9 includes an annular plate 12 the area of which corresponds to that of the perforate area 11 of the adjacent transverse partition. In use liquid is introduced into the upper portion of the column via a distributing device 3 and, after following a tortuous path through the column, is removed from the bottom of the column through an outlet 7; gas is introduced into the column via a distributing device 6 and after countercurrently contacting the downflowing liquid leaves through a top outlet 4. The column may incorporate heat exchanging elements if the chemical process requires an additional supply or abstraction of heat.
Patent GB-156320-A (GB)
Title: Improvements in water jackets for internal combustion engines
IPC: F02F11/00
Filed: 1919-10-02
Abstract: 156,320. Green, G. Oct. 2, 1919. Cylinders, cooling. - An india-rubber ring 5 situated between twc flanges 2, 3 at the base of the cylinder is brought into contact with the sheet metal jackets 4 by compressing the ring between a metal ring 6 and the flange 2. Specification 6482/05 is referred to.
Patent GB-1073200-A (GB)
Title: Improvements in preparation of aryl thiols
IPC: H01H33/73
Filed: 1966-05-31
Abstract: Aryl thiols are produced by hydrogenating a \sHsalt\sH of an aryl sulphinic acid in the presence of a platinum sulphide catalyst at super-atmospheric pressure and temperature.  The preferred temperature range for carrying out the process is 125-250 DEG  C. and the preferred pressure range 250-5000 p.s.i.g. Preferably the salts used as starting materials are those of alkali metals, e.g. the sodium salts of benzene sulphinic acid and p-toluene sulphinic acid which give benzene thiol and p-toluene thiol respectively.  The process may be carried out batchwise or continuously.
Patent GB-1155155-A (GB)
Title: Improvements in or relating to Electric Hot-Plates
Inventor: MESSUM HAROLD FRANK
IPC: H05B3/68
Filed: 1967-05-25
Abstract: 1,155,155. Electric hotplates. ESSEX PARTNERS Ltd. 14 May, 1968 [25 May, 1967], No. 24291/67. Heading H5H. The plates 10, 11 of a hot-plate that enclose the heating elements 14 are secured together by spigots 15, screwed into plate 10, passing through sockets 18 in plate 11 and retained by a wedge 22 in spigot 15. Wedge 22 is locked by a split pin through it. The plates 10, 11 are located by bosses 17 co-operating with complementary recesses. The heating elements are of hairpin form and comprise a wire in a metal sheath packed with magnesium oxide.
Patent GB-927665-A (GB)
Title: Dialdehyde polysaccharide-bisulfite process
IPC: C08B31/18
Filed: 1961-07-05
Abstract: An addition compound is produced by reacting a dialdehyde p polysaccharide with ammonium, sodium, or potassium bisulphite in suspension in a mixture of water and methanol, ethanol, or iso- or n-propanol.  40-70% of the dialdehyde groups may have been reacted with urea, thiourea, amino urea, or acrylonitrile.  The dialdehyde may be derived from maize, wheat, tapioca, or potato starch, cellulose, dextrin, dextran, or inulin by oxidation with periodic acid.  The mole ratio of dialdehyde polysaccharide polymer unit to bisulphite may be 1 to 1-2.  The bisulphite may be added as a 30-45% aqueous solution.  The reaction medium may contain 25-30% of water. The pH may be 6,5-7,0.  The temperature may be up to 55 DEG C.  The product may be precipitated by cooling or addition of acetone. Specification 875,542 is referred to.
Patent GB-1349274-A (GB)
Title: Process for rendering cellulose-containing fabrics durably flame retardant
IPC: C08G12/40
Filed: 1971-04-19
Abstract: 1349274 Flame proofing fabrics J P STEVENS & CO INC 19 April 1971 [12 March 1970] 24395/71 Heading D1P [Also in Division C3] A cellulose-containing fabric is rendered flame-retardant by impregnating with (a) a melamine derivative having from 2 to 6 substituents of formula CH 2 OZ attached to its amino nitrogen atoms, wherein Z is hydrogen or an alkyl radical (1 to 3 C), (b) a phosphoric amide of formula OP(NRR) a (OH) 3-a  wherein a is an integer of 1 to 3 and R and R' at each occurrence are independently selected from hydrogen, methyl, ethyl, hydroxymethyl and methoxymethyl, provided that at least 1 of hydrogen, hydroxymethyl or methoxymethyl is attached to each nitrogen atom, and (c) a catalyst which is an acid, an acid-forming salt, or an oxidising agent and coreacting the melamine derivative and the phosphoric amide to form an insoluble product while maintaining the moisture content of the fabric at a minimum of 10% by weight. The melamine derivative may be trimethylol melamine. Specified phosphoric amides include phosphoric triamide, and its trimethyl and triethyl N-substituted derivatives; mono-, bis-, tris, tetrakis, pentakis and hexakis (hydroxymethyl) phosphoric triamides; mono, bis and tris (hydroxymethyl) trimethyl phosphoric triamide; mono and bis (hydroxymethyl) triethyl phosphoric triamide; triethyl and trimethyl tris (methoxymethyl) phosphoric triamide, and triethyl (hydroxymethyl) phosphoric triamide. Further phosphoric amides include phosphorodiamidic acid, its diethyl and methylethyl N-substituted derivatives, and phosphoroamidic acid. Specified catalysts include formic, citric, tartaric, oxalic, glycolic, lactic, malonic, succinic, hydrochloric and sulphuric acids, zinc nitrate or chloride, magnesium nitrate or chloride, ammonium tartrate, citrate, oxalate, formate, nitrate, or dihydrogen phosphate, 2-amino-2-methyl-1-propanol hydrochloride, N, N, N-nitriloethanol hydrochloride, hydrogen peroxide, and ammonium or alkali metal peroxy mono- or disulphates. The flame-retardant may be applied from an aqueous solution or dispersion, which may contain wetting and anti-microbial agents, by padding, brushing or spraying. The retardant is insolubilised in the fabric either by a three minute steam treatment or by "batching", i.e. wrapping the moist fabric in polyethylene foil and maintaining at 40C for 48 hours, followed by drying on a tenter frame in a forced draught oven to yield a dimensionally stable fabric. A dry after-cure may be effected by heating at 150-170C, which confers durable press characteristics, though this is not preferred. The cellulose may be natural, e.g. cotton, bast, flax, ramie, jute or hemp, or regenerated, e.g. rayon, and may be blended with polyester. The fabric may be knitted, woven, or non-woven. Reference has been directed by the comptroller to Specification 1222885.
Patent GB-300740-A (GB)
Title: Improvements in apparatus for cleansing golf and other balls
IPC: A63B47/04
Filed: 1927-09-17
Abstract: 300,740. Wilson, J. C. Sept. 17, 1927. Balls, brushing and cleaning.-Apparatus for cleaning golf and other balls comprises one or more travelling bands or belts adapted to convey the balls through a receptacle containing cleansing fluid, and one or more brush members cperating to scrub the balls. An endless band 4, Fig. 4, passing round pulleys 5, 6 is moved in the direction of the arrows by a manually rotated shaft 7. Balls contained in a tube 13 are fed singly by a notched disc 11, driven bv the band 4, on to the upper surface of the band, and are carried by the latter downwardly through a cleansing bath 2 and then upwardly in contact with brushes 17, 18. The balls emerge from the device through a shoot 32, lined with towelling, down which they are urged by an endless band 33 driven from the shaft 7. The brush 17 and the two brushes 18 are oscillated by a shaft 24 geared to the shaft 7, the two oscillations being 180 out of phase. In a modification, Fig. 5 the balls pass directly from the tube 13 to the band 4, the feed being controlled by two spring-pressed arms 45, the ends 45<a> of which normally enter the tube but are alternately removed therefrom, to allow the passage of a ball, by cams 48 on a gear wheel 25 driven by the shaft 17. The band may be provided with diagonal ridges to rotate the ball.
Patent GB-367366-A (GB)
Title: Improvements in and relating to methods of and means for sealing bottles, jars and other containers
IPC: B65D51/20
Filed: 1930-08-18
Abstract: 367,366. Sealing bottles. CROAD, A. K., 70, Chancery Lane, London.-(Gutmann & Co., F. ; Bush Terminal 19, Brooklyn, New York, U.S.A.) Aug. 18, 1930, No. 24639. [Class 125 (iii).] Bottles &c. are sealed by enclosing a piece of inert substance 3 within a cap 1, and interposing an unset inert adhesive 5 between the bottle-neck and the substance 3, and applying the cap so that the substance 3 is held during the setting of the adhesive. By this means the substance 3 is secured to the bottle-neck and the cap may be removed without breaking the sea]. A gasket 2 may be fitted within the cap. The adhesive may be applied to the bottle-neck 4 before the inert seal is applied thereto, or to the seal itself. By screwing the cap to the container the turning motion tends to distribute the adhesive uniformly.
Patent GB-150347-A (GB)
Title: Improved process for admitting live steam into the exhaust steam pipe of back pressure turbines
IPC: F01K7/34
Filed: 1920-08-25
Abstract: 150,347. Akt.-Ges. Brown, Boveri, et Cie. Aug. 25, 1919, [Convention date]. Regulating.-Relates to means for controlling a valve l admitting live steam into the exhaust steam pipe of back-pressure turbines, the exhaust steam of which is used for heating purposes, and consists in effecting said control by means of the control oil of the turbine live-steam admission valve i. The back-pressure turbine may work in parallel with other engines, or alone. The exhaust steam pressure acts on a diaphragm a controlling a valve having two distributing-edges c, d which, together with a slot f controlled by a speed governor h, regulate the oil pressure on the pistons k, m actuating the valves i, l. With a diminishing demand for heating-steam, the pressure-regulator a opens the lower oil-discharge passage d, and the valve i tends to close. With an increasing demand, the reverse takes place, and if at full load on the back-pressure turbine its exhaust steam does not satisfy the heating requirements, the pressure-regulator a opens the upper oil-discharge passage c, thereby admitting pressure oil to open the additional valve l and supply livesteam direct to the heating-pipe. The oil pressure under the piston k is maintained by the compensating closure of the lower passage d.
Patent GB-1042816-A (GB)
Title: Improvements in or relating to the production of metallic coatings upon the surfacesof other materials
Inventor: ADDY JOHN
IPC: H05K3/18
Filed: 1964-06-15
Abstract: A substrate of e.g. synthetic or natural resins, glass, wood, ceramic, paper is coated with a metal, e.g. gold, silver, nickel, chromium, iron, copper or zinc, by chemical deposition after first treating the substrate with a seeding metal compound, e.g. stannous chloride, in a solvent e.g. sulphuric, trichloroacetic or hydrofluoric acids or acetone, which also attacks the surface of the substrate.  In an Example a polyesterterephthalate sheet is washed in an aqueous tetrasodium pyrophosphate, detergent and sodium carbonate solution, and then after rinsing immersed in a solution of 900 c.c. of sulphuric acid (conc.), 100 c.c. of hydrochloric acid (conc.), and 0.5 grms. of stannous chloride. The sheet is then rinsed in a sulphuric, hydrochloric acid solution and then in water.  After further seeding in another stannous chloride solution, and rinsing, the sheet is immersed in a palladium chloride, hydrochloric acid solution and finally in a copper-plating solution comprising one part of 170 gms. copper sulphate, 189 c.cs. formaldehyde and water to make 1 gallon, and one part of 65 to 70 gms. nickel chloride, 155 to 160 gms. sodium hydroxide, 700 to 750 gms. Rochelle salts, 70 to 75 gms. sodium carbonate and water to make 1 gallon.
Patent GB-895646-A (GB)
Title: Improvements relating to air inlet control apparatus
IPC: F02C7/057
Filed: 1960-07-15
Abstract: 895,646. Jet propulsion plant. UNITED AIRCRAFT CORPORATION. July 15, 1960 [July 20, 1959], No. 24767/60. Class 110 (3). [Also in Group XXXV] A supersonic air intake for a gas turbine jet propulsion plant or ram jet having a portion therein where a shock wave may be located has a sound signal generator in the duct located downstream of the shock wave for producing signals which travel in an upstream direction towards the shock wave, a sound signal pick up in the duct adjacent the region where the shock wave is to be located for sensing signals generated by the sound signal generator and means responsive to the pick up for producing a sound signal dependent upon the location of the shock. A supersonic air intake comprises a convergent portion 14, a throat section 16 and a divergent portion 18, which discharges to the inlet of a gas turbine jet propulsion plant. Under conditions of high speed flight, a shock wave 30 is formed at the upstream end of the throat 16. A sound generator 40 is provided to direct sound upstream and is aimed at a pick up of microphone 42. The microphone 42 has a shield 44 which prevents it accepting sounds emanating from an upstream region. With the shock wave 30 in the position shown, the pick up 42 can sense a strong signal from the sound generator 40 because both are located in the subsonic stream. If the shock wave is positioned downstream of the pick up 42, the sound waves will not reach the pick up or the signals sensed by it be relatively weak. The pick up is connected through an amplifier 46 to a coil 50 having an iron core 48. Depending upon the strength of the amplifier signals, the wiper 52 will contact the strip 54 or 56 and energize a reversible motor 62 to open or close a by-pass valve 68. The wiper arm 52, iron core 48 and coil 50 may comprise an ordinary ammeter. In a modification, the motor 62 controls a movable wall to vary the inlet air flow.
Patent GB-1390249-A (GB)
Title: Polysiloxane catalysts for the polymerisation of ethylene
IPC: C08F10/02
Filed: 1972-05-26
Abstract: 1390249 Hydrogen siloxanes modified with alkylaluminiums and alkyltitanates or vanadates WACKER-CHEMIE GmbH 26 May 1972 [26 May 1971] 24966/72 Headings C3T C3S and C3P A catalyst for use in the manufacture of polyethylene is obtained by reaction at -50 C. to 100 C. of (A) the product of reaction at 120 C. or below of 1 mol. of a trialkylaluminium having C 2-8  alkyl groups with 1-2 unit mols. of a polysiloxane of viscosity 5-100 cS/25 C. containing units RHSiO, R being a C 1-6  alkyl group, or an aryl or cycloalkyl radical, with end units substituted by R and/or H and not more than one OH group per Si, with (B) a compound TiX 4-n - (OR<SP>1</SP>) n  and/or VOX 3-n (OR<SP>1</SP>) n  and/or VX 4-n - (OR<SP>1</SP>) n , wherein n is 0, 1 or 2, X is a halogen atom and R<SP>1</SP> is a C 1-8  aliphatic or cycloaliphatic radical. In examples AlEt 3  is allowed to react with a polymethylhydrogen siloxane of 30 cS/25 C., a polyethylhydrogen siloxane of 35 cS/25 C., nonamethyl heptasiloxane, or a polyphenylhydrogen siloxane of 60 cS/25 C., in amounts of 0À88-1 mol. of AlEt 3  per siloxane unit; the products are treated with TiCl 4 , TiCl 3 (OPr), or a mixture of TiCl 4  and Ti(OPr) 4  in a weight ratio greater than 2 : 1. The product catalysts are used to polymerize ethylene alone or with a minor amount of butene-1, in the presence of H 2 .
Patent GB-144172-A (GB)
Title: Improvements in or relating to woodworking or metal working machinery
IPC: B27C9/04
Filed: 1919-10-13
Abstract: 144,172. Heath, E. Oct. 13, 1919. Drilling-machines. -A drill spindle 24 is provided in a machine which also embodies a circularsaw 30 and a reciprocating-saw 18, the spindle being rotated by one of the bevel-wheels 8 of the mechanism which operates the saw 18. The spindle has a feed mechanism and the section 35 of the work-table is adjustable vertically.
Patent GB-502184-A (GB)
Title: Improvements in or relating to coated articles and a method of making such articles
IPC: B29C70/68
Filed: 1937-09-15
Abstract: 502,184. Coating with metals. NATIONAL STANDARD CO. Sept. 15, 1937, No. 25118. Addition to 425,297. [Class 82 (ii)] A base, e.g. of ferrous metal or of non-metallic material such as wood or ceramic material which may have been metallized, is coated first with a thin layer of zinc, lead, tin, cadmium, or alloys thereof and then with a layer of copper of a thickness between about 1/60,000 and 1/240,000 of an inch, the copper layer being applied by deposition from a bath containing a copper salt and an assistant material such as tartaric acid or ammonium oxalate, the amount of copper salt in the bath being greater than that of assistant material. The thickness of the laver of zinc, lead, tin, cadmium, &c. is preferably between about 1/4,000 and 1/11,000 of an inch, the layer being preferably applied by dipping in a molten bath and removing excess of coating metal. Small percentages of aluminium, magnesium, antimony, copper, arsenic, &c. may be alloyed with the metal of theundercoat. After the application of the copper layer, washing, and drying, rubber may be vulcanized on to the surface, coatings of metals such as antimony being first applied over the copper layer if desired. The process is of particular application in the manufacture of tire bead reinforcing wires. In applying the undercoat the molten bath is preferably maintained at a temperature, e.g. 438-449‹ C., which will improve the mechanical characteristics of the wire. If the undercoat is of cadmium or zinc the coppering bath may contain 50 gms. of copper sulphate and 30 gms. of ammonium oxalate ; for an undercoat of tin or lead it may contain 50 gms. of copper sulphate and 30 gms. of tartaric acid. Specifications 415,025, 453,190, and 453,224 are referred to.
Patent GB-383947-A (GB)
Title: An improved multiple tariff meter for alternating current
IPC: G01R11/56
Filed: 1932-09-09
Abstract: 383,947. Supply meters. LANDIS & GYR AKT.-GES., 1, Hofstrasse, Zug, Switzerland. Sept. 9, 1932, No. 25188. Convention date, Sept. 24, 1931. [Class 37.] An alternating-current multiple-tariff meter has a continuous-current rate-changing relay which is energized by rectified alternating current. A time switch 10 closes the primary circuit of a step-down transformer 8, the secondary 7 energizing the rate-changing relay 5 through a full-wave rectifier 6. The rectifier, which may be of the oxide type, can be built into the meter or time switch, or the rectifier and transformer can be built into the switch.
Patent GB-633833-A (GB)
Title: Improvements in or relating to heat resistant alloys
IPC: C22C19/05
Filed: 1946-08-23
Abstract: A mechanical element, which is to be subjected in normal use to considerable stress at a temperature of 1500 DEG F and higher, is made of a heat-resistant alloy consisting of Ni 15-35 per cent, Co 20-40 per cent, Cr 17-22 per cent, Mo 3-15 per cent, W 1-9 per cent, Mn 0.5-3 per cent, Si 0.1-0.7 per cent, C less than 0.2 per cent, and the balance Fe from a few tenths to 25 per cent with not more than 0.5 per cent of the usual contaminants.  The relation between the percentages of the component elements of the alloy is such that-(1) Ni + 0.5 Co = 30-47.5, (2) Mo + 0.75 W = 10-15, (3) Mo + 0.8 Cr + 0.75 (W + Mn) + 1.2 Si-0.25 Ni-0.125 Co = 19-24, (4) 1/2 /Mo-0.8 Cr-0.75 (Mn-W)-1.2 Si + 0.25 Ni + 0.125 Co/+ 7 = 7-12.5.  The alloy is precipitation-hardened so that it has a minimum hardness of 300 D.P.H., and a grain size at least as coarse as No. 2 A.S.T.M.  This is achieved by quenching the alloy from a temperature between 2200 DEG F and 2375 DEG F, and ageing at a temperature between 1500 DEG F and 1700 DEG F.
Patent GB-423810-A (GB)
Title: Improvements relating to the packing of sweetmeats or other articles of confectionery in boxes or cartons
IPC: B65D5/50
Filed: 1933-09-13
Abstract: 423,810. Boxes. KUNZLE, C., 156, Broad Street, Birmingham. Sept. 13, 1933, No. 25325. [Class 18] A tray for insertion in a box for packing sweetmeats or confectionery is formed with apertures to receive the articles, bounded wholly or in part by resilient tongues d by which each article c is gripped. A bent-up tab e may carry a designation of the article. The tray may be of cardboard and may be integral with the box.
Patent GB-1102283-A (GB)
Title: Safety circuit for combustion heaters for vehicles
IPC: B60H1/22
Filed: 1965-06-16
Abstract: 1,102,283. Electric switches &c. SWFSPEZIALFABRIK FUER AUTOZUBEHOER GUSTAV RAU G.m.b.H. 16 June, 1965 [2 July, 1964], No. 25427/65. Heading H1N. [Also in Division F4] In a heater for vehicles in which fuel is pumped into a combustion chamber by an electrically controllable pump and is electrically ignited and in which there is a safety delay period between switching off of the heater and renewed switch-on of the fuel supply provided by a thermal switch, a relay 34 controlled by the vehicle engine ignition switch has a contact 32 controlling the circuit of the fuel pump, the relay being operable only by moving a heater switch (10) to an " ignition " position by means of an operating rod (12) which has a wedgeshaped supporting surface (13) which engages a rod 37 carried by the armature 45 of the relay and closes holding contacts 33 of the relay whereupon the relay is electromagnetically held and is released when the engine ignition is switched off. In a modification the relay has a resistance connected in series with it with a central tapping lead to an additional contact of the ignition switch (10) instead of the holding contacts 33. A binding clip 48 holds the base 47 and the housing 41 of the relay together.