baber/WOPTO huggingface dataset:
Patent GB-1472017-A (GB)
Title: Matrix printer
IPC: B41J2/245
Filed: 1975-05-22
Abstract: 1472017 Selective printing; ink ribbon mechanisms PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 22 May 1975 F21 June 1974] 22209/75 Heading B6F In a matrix printer with a print head 1 which oscillates across the paper 5, the ink ribbon 25 is fed longitudinally in a direction parallel to the line of printing and is further movable, perpendicular to this, in a direction parallel to direction of paper feed. As shown gear-wheel 37, which is driven by the shaft 13 (which also oscillates the carriage 1), has cam track 39 engaged by follower 57. Movement of the follower 57 rocks arm 59 so that cable 65 provides bi-directional movement to drum 71. The drum 71 drives the shaft 91 through gears 85, 87 and the shaft rocks ribbon guides 29, 27 which are attached to it by levers 89, 93 respectively. A coupling 69 transmits the bi-directional movement of the drum in one direction only to shaft 83 which turns pressure roll 19 to advance the paper 5. The cam track 39 is shaped to produce stepwise movements of the paper and ribbon equal to the spacing between adjacent rows of the character matrix a number of times which corresponds to the number of rows of the matrix. This is then followed by a longer step equal to the spacing between characters in adjacent lines. This is followed by a movement of the ribbon 25 back to the starting postion. This last movement is not transmitted by the coupling 69 so that the paper is spaced by one line as a result of the sequence.
Patent GB-1294036-A (GB)
Title: Thyristor switch
IPC: H02M1/32
Filed: 1970-05-07
Abstract: 1294036 Transformer switch COMPAGNIE GENERALE D'ELECTRICITE 7 May 1970 [8 May 1969] 22212/70 Heading H2H A tap changing switch for a transformer 1, comprises pairs of thyristors 5, 6, and 7, 8, each thyristor pair being connected in series with a saturable reactor 14 or 15 the core of which may be ferrite. In parallel with the thyristors and saturable reactor are reversed Zener diodes 9, 11, and 12, 13 which protect the thyristors against over voltages. The saturable reactors 14, 15 protect the thyristor assemblies against excessive current due to the discharge of the Zener diode capacitance. In series with the switches is a device 18 which detects the point at which A.C. current passes through zero. Capacitors 16, 17 may be connected in series with the switch units, and have values such that the tuned circuit including the relevant saturable reactor, has a very low resonant frequency. Each tap point may be provided with three studs two of which are connected to resistors (21), 19, Fig. 2 (not shown), a rotary switch (24) switching between the different studs. U.K. Specifications 1,060,638, and 1,236,327 are referred to.
Patent GB-223123-A (GB)
Abstract: 223,123. Caldwell, C. W. Nov. 1, 1923, [Convention date]. Steelyard apparatus.-In a weighing-apparatus wherein a rotatable poise is traversed along a beam by means of an operating shaft which also actuates indicating hands, the spindles of the hands extend directly from their dial substantially perpendicularly to the shaft, the spindle of the more rapidly moving hand being provided with a gear wheel directly engaging an equal gear wheel at right-angles to it on the shaft, and another gear wheel on the shaft actuating the less rapidly moving hand through reduction gearing. The poise 6 is rotated by a hand wheel 10 attached to a square shaft 11 entering a square hole in the poise. Attached to the poise is a nut 8 engaging a stationary screw 9 so that the poise when rotated is also caused to move along the beam. On the shaft 11 is a skew gear wheel which drives a wheel 18 secured upon the spindle of the ounce hand 16 so that the ounce hand makes one revolution for every revolution of the poise 6. A second gear wheel 22 on the shaft 11 drives the pounds hand 15 through intermediate worm gearing. To eliminate backlash the gear wheel 18 is made in the form of two gear wheels mounted side by side and having relative rotary adjustment. The adjustment may be made by hand or automatically by a spring. Specification 208,666 is referred to.
Patent GB-871721-A (GB)
Title: Improvements in or relating to stadia rods
IPC: G01C15/08
Filed: 1957-07-15
Abstract: 871,721. Levelling-staves. MAGYAR OPTIKAI MUVEK. July 15, 1957 [July 19, 1956], No. 22378/57. Drawings to Specification. Class 97(2) A staff having a scale along its length has, at its centre, a sighting target arranged to be movable from an inoperative position to a sighting position in which a sighting line is perpendicular to the length of the staff. This target assists in locating the staff perpendicular to the sight line of the levelling instrument. A bubble tube may also be provided. The scale may be calibrated so that the length which subtends a predetermined angle at remote point gives a direct indication of the distance of that point from the staff.
Patent GB-438908-A (GB)
Title: Improvements in the manufacture of metal reflectors
IPC: C23C2/08
Filed: 1934-08-02
Abstract: An alloy for metallic reflectors consists of 60 per cent of tin, 30 per cent of lead, 4 per cent of copper, 2 per cent of stibnite, and 4 per cent of bismuth, with or without small amounts of aluminium, antimony, and compounds of the constituent metals. Specification 112,884, [Class 83 (i)], is referred to.
Patent GB-910766-A (GB)
Title: Polymeric compositions
IPC: C08K5/42
Filed: 1961-06-22
Abstract: A crystalline polyolefin, such as polypropylene, is stabilized with an organic compound <FORM:0910766/IV(a)/1> wherein R and R1 are aryl groups which may be substituted with alkyl, acyl or alkoxy radicals. Specified stabilizers are p,p1-di-(benzoylamino)-diphenyl-sulphone, p,p1-di-(naphtholamino)-di-phenyl-sulphone, p,p1-di-(p-ethoxy benzoylamino)-diphenyl-sulphone and p,p1-di-(p-methoxy benzoylamino)-diphenyl-sulphone.  Calcium stearate may be included as an anti-acid agent.  The compositions, which may be formed with the aid of a solvent, may be made into filaments, fibres or film. Specification 828,791 is referred to.
Patent GB-1292784-A (GB)
Title: Detergent composition containing enzymes
Inventor: ADAM WOLFGANG ERNST
IPC: C11D3/386
Filed: 1971-04-19
Abstract: 1292784 Detergent compositions PROCTER & GAMBLE CO 19 April 1971 [26 Feb 1970] 22696/71 Heading C5D A granular composition comprises (a) a detergent, (b) an organic sequestering agent or an inorganic alkaline builder in a quantity equal to 0À1 to 30 times that of the detergent, (c) a glucose polymer containing alpha-1,4-links, (d) a compound of formula R 1 (CHOH) n Y where R 1  is CHO or CH 2 OH, n is 3 or 4 and Y is a carboxylic salt or ester group in a weight equal to 0À01-2 times that of the glucose polymer and (e) an alpha-amylase in a weight equal to 0À0005-3% of the total composition and 0À02- 100% of the weight of glucose polymer. The detergent may be sodium n-dodecylbenzenesulphonate, a sodium C 10-18  alkyl sulphate or an adduct of tallow fatty alcohol and ethylene oxide. The sequestering agent may be an alkali metal, ammonium or substituted ammonium polycarboxylate or polyphosphate, e.g. trisodium salt of nitrilotriacetic acid, the sodium salt of polyitaconic acid or polymaleic acid or the sodium or potassium salts of ethane-1,2- diphosphonic acid, 1-hydroxyethane-1,1-diphosphonic acid or ethane-1,1,2-triphosphonic acid. The builder may be sodium or potassium carbonate, phosphate, tripolyphosphate or hexametaphosphate or sodium silicate or sulphate. The glucose polymer may be dextrin or amylopectin. The compound of formula R 1 (CHOH) n Y may be calcium gluconate. The composition may also include partly hydrolysed collagen, sodium perborate as a bleaching agent, a proteolytic enzyme, hydrogenated fish oil C 14-26  fatty acid, sodium thiosulphate and water.
Patent GB-916057-A (GB)
Title: Improvements in and relating to the hydrogenation of acetylenes
Inventor: ROBINSON RALPH LOZELU
IPC: C07C5/08
Filed: 1959-06-02
Abstract: The selective hydrogenation of acetylenes in a gas mixture containing olefins e.g. ethylene and propylene is effected in a first stage with hydrogen in excess of that required to hydrogenate the acetylenes to olefins over a catalyst comprising palladium supported on alumina having a mean pore radius (method of determination described) not less than 100  the hydrogen content of the mixture is then adjusted to 2-3 moles per mole of acetylene and the mixture passed in a second stage over palladium supported on active alumina.  The first stage catalyst preferably has a pore radius below 1400  and a surface area of 5-65 square metres per gram and is made as described in Specification 916,056 e.g. by heating active alumina at 800-1300 DEG C. for 2-6 hours.  Each catalyst may contain up to 5% palladium e.g. 0.01-0.4%, the first stage catalyst preferably containing less than the second.  The feed preferably contains less than 2% of acetylenes and 0.5% C4 and higher olefins and in the first stage may contain a considerable excess of hydrogen.  The feed to the second stage preferably contains less than 0.1% acetylenes and the hydrogen content may be adjusted by removing the hydrogen after the first stage and adding the required amount.  Suitable conditions are 15-500 p.s.i.g., 1,000-15,000 litres of gas (20 DEG C. and atmospheric pressure) per litre of catalyst filled space per hour and 40-200 DEG C., preferably lower in the second than the first stage.
Patent GB-396940-A (GB)
Title: Improvements relating to hard metal alloys
IPC: C22C29/06
Filed: 1932-08-15
Abstract: A sintered alloy for tools and other working implements, contains 1-14 per cent of zirconium carbide, or thorium carbide, or both, up to 25 per cent of a metal or metals of lower melting point, e.g. iron, cobalt, nickel, or manganese, and tungsten carbide, or tantalum carbide, or both, the carbides of the alloy consisting at least in part of a heterogeneous mixture.  The Specification as open to inspection under Sect. 91 comprises alloys containing up to 90 per cent of zirconium carbide, or thorium carbide, or both, one or more other carbides of high melting point such as carbides of tungsten, molybdenum, tantalum, or titanium, and up to 25 per cent of a metal or metals of lower melting point.  This subject-matter does not appear in the Specification as accepted.
Patent GB-480264-A (GB)
Title: Pre-selection control device for gear-boxes
IPC: F16H63/46
Filed: 1936-08-19
Abstract: 480,264. Change-speed gear control mechanism. SOC. ANON. LE PROGRES INDUSTRIEL. Aug. 19, 1936, No. 22849. Convention date, June 17. [Class 80 (ii)] In preselective control mechanism for changespeed gearing, one or more profile discs or tappet drums such as 11, Fig. 2, is turned to select and is subsequently displaced axially by a tappet on one or other of two oppositelymoved executive rods 6, 7 to effect the selected striking movement. In Fig. 2, there is one tappet drum 11 and it carries axially with it a fork 10 and gear cluster 9 to two end gear positions. The drum 11 is splined on a shaft 1 which is turned to select from a hand-wheel 5. The striking movement is effected by throwing up a hand lever 8 which is articulated to both rods 6, 7, which carry tappets 6A, 7A, adapted alternatively to strike tappets or profile sectors 13, 14 that have been turned into their paths. In Fig. 5 is shown an arrangement by which a single drum 11 is moved to three gear positions, the drum tappets 13, 14 being staggered. The drum 11 moves two steps when a rod tappet 6A engages a nearer drum tappet 13, but it moves only one step when the rod tappet 6A engages a farther drum tappet 14. In Fig. 1 is shown an arrangement in which three tappet drums 2, 3, 4 each carrying a striker are moved in opposite directions selectively by executive rods 6, 7 each having three tappets such as 6A, 6B, 6C.
Patent GB-257106-A (GB)
Title: Improvements in or connected with drying apparatus
IPC: F26B17/20
Filed: 1925-09-14
Abstract: 257,106. Tomlinsons (Rochdale), Ltd., and Tomlinson, G. C. Sept. 14, 1925. Wheeled trucks, moving; air, controlling direction of flow of.-Articles &c. to be dried are charged into perforate drums a which are rotatably supported upon trucks b adapted to be moved either continuously or intermittently through the drying-chamber in countercurrent to heated air, the chamber having compartments with corresponding side heating-compartments g through which the air is continuously circulated by the fans f during its passage to the discharge fan h. The drums are rotated either continuously or intermittently through toothed wheels c<2> engaging with an endless travelling chain e. In a modification, the drums are arranged with their axes longitudinally of the drying-chamber and are rotated through worm-gearing e<5>, e<6> from the endless travelling chains e.
Patent GB-1481654-A (GB)
Title: Scanning system
IPC: G02B26/12
Filed: 1975-05-23
Abstract: 1481654 Scanning systems INTERNATIONAL BUSINESS MACHINES CORP 23 May 1975 [11 July 1974] 22926/75 Heading G2J [Also in Division G4]  A scanning arrangement uses a mirror tunnel 30 to redirect a scanned beam into a crossed scanning pattern at 35. In one embodiment the beam is scanned into one end of the tunnel 30 by a rotating polygon 26; and the light reflected from a bar coded object at 35 (not shown) is detected by a photo-cell at 38. Alternatively the object at (35) could be illuminated by lamps at the other end of the tunnel 30, and the photo-cell scanned on to the object via the tunnel. If the facets of polygon 26 are at various different angles to the polygon axis, the respective criss-crossed scans at 35 will be displaced relative to each other so as to give interlaced scanning patterns. The effect of ambient light may be reduced by using a laser in conjunction with a narrow pass filter, or by arranging the detector to be scanned simultaneously with the illuminating beam via a beam-splitter between source 20 and polygon 26.
Patent GB-961666-A (GB)
Title: Improvements in or relating to methods of manufacturing thallium telluride semiconductor materials, bodies and devices
IPC: C30B1/00
Filed: 1960-07-01
Abstract: In the production of thallium telluride, Tl2Te3, or an isomorphous mixed crystal wherein part of the thallium and/or of the tellurium is replaced by another element, by heating the component elements or compounds supplying them, at a temperature below the decomposition temperature of Tl2Te3 (about 238 DEG  C.), as described and claimed in the parent Specification, crystal nuclei of a compound isomorphous with Tl2Te3 are incorporated in the reactant mixture before or during the heat treatment.  Such nuclei, preferably Tl2Te3 itself, may be added in amounts up to 1% and are preferably formed in situ. This may be effected by preheating the mixture between 238 DEG  and 243 DEG C., for about 30 minutes and then cooling below the decomposition temperature.  According to Examples: (1)  Tl and Te in proportions corresponding to Tl2Te3 were melted at 350 DEG  C. then cooled to 239 DEG  C. and maintained at this temperature for an hour.  Crystal nuclei of Tl2Te3 where thus formed and the mixture was cooled to 235 DEG  C. and kept there for 3 hours.  (2) Tl and Te were melted in an argon atmosphere at 300 DEG -350 DEG  C. and cooled to 237 DEG  C. Crystal nuclei were added as the temperature fell from 250 DEG  to 237 DEG  C.  (3) TlTe and Te, corresponding to Tl2Te3 were ground with Tl2Te3 crystal nuclei and shaped under 1 ton/cm.2 pressure. The body formed was heated at 230 DEG  C. for 15 hours to form Tl2Te3. The thallium and/or the tellurium may be partially replaced by gallium or indium and by sulphur or selenium respectively.
Patent GB-616005-A (GB)
Title: Improvements in or relating to the creping of textile fabrics
Filed: 1946-08-02
Abstract: Fabric containing highly twisted crepe yarns having a basis of cellulose acetate or other organic derivative of cellulose are impregnated mechanically with an aqueous aliphatic alcohol of one to five carbon atoms, the concentration of the alcohol in the solution being at least 70 per cent, and then subjected to a hot aqueous treatment to develop the crepe.  The desired crepe effect is produced in an exceedingly short time, viz. from about 3 to 15 minutes, and thus its development may be effected in a continuous manner. Improved dyed fabrics having unusual resistance to light, gas-fading and washing may be obtained if the fabric containing the highly twisted cellulose acetate yarn or yarn of other organic derivative of cellulose is dyed before creping, the dye being incorporated in the aqueous-alcohol bath.  The dyestuff may be any that has an affinity for the material such as an acid dyestuff or one of the solubilized-vat dyestuffs of the Indigosol or Algosol types.  The dyed fabric is lightly washed before entering the creping bath. Ethyl alcohol is the preferred alcohol, but methyl, propyl, isopropyl, butyl, isobutyl, amyl or mixtures of these may be used.  A wetting agent such as sulphated lauryl alcohol may be added to the creping bath, which is maintained at 90-99 DEG  C.  In an example, a cellulose acetate fabric containing a highly twisted weft is lightly washed to remove oils or sizing, dried under tension and padded with a 75 per cent solution of ethyl alcohol. It is then washed lightly and entered into an aqueous boil-off bath containing 0.5 per cent sulphated lauryl alcohol at 98 DEG  C. The passage through the bath takes 5 minutes.  In a further example, a similar fabric is pad dyed after preliminary washing with Alizarin Sky Blue B, Cloth Fast Yellow 2GC in a 70 per cent ethyl alcohol solution containing sodium thiocyanate.  After passage through a padding mangle and light washing in water it is passed continuously into an aqueous boil-off bath as in the example above, the time of treatment in the bath being 10 minutes. Other examples are also given.
Patent GB-1395832-A (GB)
Title: Electron tube socket
IPC: H01T4/08
Filed: 1973-05-15
Abstract: 1395832 Electron tube holders AMERICAN PLASTICRAFT CO 15 May 1973 23191/73 Heading H2E An electron tube socket comprises a plurality of contacts 18 adapted to connect with pins of the tube each attached to a respective conductive arm 40 which includes a spark gap 52. Each contact 18 has a bifurcated spring end, is connected to a resistor 27 by a wire 26 and to its arm 40 by a welded plug 51 which is held within an insulating base 13 fitted with a cap (14). The spark gaps 52 are formed by shearing the arms after assembly in the base and separating the sheared edges 54a, 56 to provide the required size gap at which sparking is initiated, subsequent sparking extending to between surfaces 60, 58. Each arm 40 is connected to a conductive ring 39 held in an annular groove 38 of the base 13 by studs 42. Venting holes 59 in base 13 adjacent the gaps for dissipation of spark gases.
Patent GB-615590-A (GB)
Title: Process of separating alloys
IPC: C22B7/00
Filed: 1946-08-06
Abstract: A process for separating alloys by fractional crystallization in which those phases which solidify first are caused to separate out at relatively cool points is characterized in that with controlled cooling of the melt, the abstraction of heat is effected only by way of a determinate crystallization surface and at the same time the melt is maintained in lively uninterrupted movement so that the temperature and the composition of the melt remain uniform throughout and only close to the crystallization surface is there set up a temperature and concentration drop in which the difference in temperature between the melt and the crystallization surface is maintained at from 5 DEG  to 20 DEG C.  The walls or part of the walls of the vessel containing the melt may be artificially cooled to form a crystallization surface the melt being stirred e.g. mechanically or by an alternating magnetic p  field.  Alternatively the surface of a hollow, mechanically driven stirrer may itself be artificially cooled to form a crystallization surface.  The crystallization may be concluded as soon as the bath temperature has fallen to a value exceeding the eutectic temperature by about the temperature difference at the crystallization surface.  An example is given of the production of an alloy containing 54.05 per cent tin, 41.50 per cent lead 3.55 per cent antimony and 0.15 per cent copper from a melt containing 53.04 per cent tin, 32.20 per cent lead, 12.08 per cent antimony and 2.46 per cent copper.  The production of an eutectic aluminium-silicon alloy containing 12.9 per cent silicon from a melt containing aluminium, 31.5 per cent silicon and small quantities of iron and titanium, is also referred to.
Patent GB-803701-A (GB)
Title: Improvements in and relating to nuclear reactors
Inventor: BOWDEN ANDREW THOMPSON
IPC: G21C7/22
Filed: 1955-08-11
Abstract: 803,701. Nuclear reactors. PARSONS & CO., Ltd., C. A. Oct. 18, 1956 [Aug. 11, 1955], No. 23225/55. Class 39(4). Ducts within the core 2 of a nuclear reactor contain a fluid with a neutron absorption that is varied to control the reactor. Where the fluid is an aqueous solution of a cadmium salt, this is supplied from a constant head mixing tank 5 to re-entrant tubes 1. Hot fluid leaving the core is cooled at 6 and stored in a reservoir 3. The neutron absorption is varied by variation of density, or level or pressure (gaseous fluids) in all or in selected tubes and thus the power output and/or the distribution of neutron flux may be controlled. Non-aqueuous liquids, including liquid metals, solid suspensions, and gases or mixtures of gases may be used.
Patent GB-1140631-A (GB)
Title: Production of ferromanganese
Inventor: BAUER EDWIN FRANCIS
IPC: C21C7/00
Filed: 1966-05-25
Abstract: 1,140,631. Producing ferro-manganese. UNION CARBIDE CORP. May 25, 1966, No.23308/66. Headings C7A and C7D. Ferro-manganese is produced by introducing into a ladle (a) a melt of oxidic manganesecontaining material in which the amount of oxygen combined with manganese is no greater than that represented by the formula Mn 2 O 3  and (b) a silicon reducing agent so as to produce molten oxidic manganese-containing material floating on a molten metal phase; reaction between the metal phase and the oxidic material is produced by introducing gas under pressure into the former so that it is continually forced upwards through the oxidic material and then falls back through it. The oxidic material may be a manganesecontaining ore or slag or may be material which has been partially reduced with carbon. The reducing agent may be silicon or an alloy of 4-32% Si, 60-80% 0À03-1À6% C, balance Fe. Inert gas, air, nitrogen, carbon monoxide or carbon dioxide may be used.
Patent GB-1211081-A (GB)
Title: Jet propelled aircraft
Inventor: CLARK KENNETH WILLIAM
IPC: B64C11/00
Filed: 1967-05-19
Abstract: 1,211,081. Jet propelled aircraft. ROLLSROYCE Ltd. 22 April, 1968 [19 May, 1967], No. 23373/67. Heading B7G. [Also in Division F1] An aircraft has forward thrust provided by two gas turbine-engines (which may be turbojet, by-pass or turboprop engines, and may be mounted on the wings) and by a ducted fan 20 rotated (e.g. via a shaft 21) by a turbine 22 supplied with compressed air from the gas turbine engines via a duct 13 which contains combustion equipment (e.g. burners 35 and flame stabilizers 36) capable of heating the compressed air. The ducted fan 20 may be mounted at the rear end of the aircraft fuselage 12, air being drawn through an annular duct 26 between the fuselage and a double-walled annular member 27, the compressed air powering the turbine 22 passing through hollow vanes 30 to flow out between the double walls of the member 27. The rear tip 25 of the fuselage may either be carried by vanes 28 from the member 27, or be integral with and rotated with the fan 20. In the event of failure of the ducted fan unit, shutters 38 and 45 may be swung to the positions shown in dot-dash lines to isolate the unit. Thrust reversal may be effected by using variable pitch blades on the fan 20.