baber/WOPTO huggingface dataset:
Patent GB-490747-A (GB)
Title: Improvements in or relating to oppositely rotating coaxial propellers
IPC: B64C11/30
Filed: 1937-02-16
Abstract: 490,747. Fluid-pressure servomotor-control systems. UNITED AIRCRAFT CORPORATION. Feb. 16, 1937, No. 4666. Convention date, Feb. 29, 1936. [Class 135] [Also in Group XXXIII] In aircraft, two oppositely-rotating coaxial airscrews are disposed at one side and driven at a speed less than that, of an aero-engine, pitch changing mechanism being provided for simultaneously adjusting the pitch of both airscrews ; the mechanism includes a relatively stationary sleeve located between the coaxial shafts on which the airscrews are mounted. As shown, the airscrew 42 is driven from the engine shaft 10 through planetary reduction gear 20, 28, 30, the planet-gears 28 being carried by a shaft 26. The airscrew 44 is carried by a tubular shaft 46, and is driven through a reversing gear 48, 52, 54, the gears 52 being journalled in the casing 12. Antifriction bearings 78, 90 are arranged as shown. The airscrew blades are mounted on spigots 101 through the intermediary of a bearing bush 126. The blades are held in a split hubmounting 108, thrust bearings 106 being provided. The airscrews are mounted on their respective shafts by tapered splines and nuts. Each airscrew blade is adjustably connected through links 134 with members 142, 152 free to rotate on a member 148 secured to a sleeve 146 disposed intermediate the airscrew shaft. The sleeve is axially displaceable to simultaneously adjust the pitch of both airscrews, by means of fluid under pressure supplied to a cylinder 96 in which an annular piston 158 is connected to the sleeve 146. The supply of fluid may be under manual control 171 or under the control of a centrifugal governor 160 driven through the shaft 162. An over-riding manual control 170 may be provided. The blades are so arranged that under centrifugal force they tend to move to their low pitch setting.
Patent GB-329026-A (GB)
Title: Improvements in or relating to vehicle bodies
IPC: B62D29/02
Filed: 1929-02-12
Abstract: 329,026. Holland, W. H., and Cooper, J. Feb. 12, 1929. Bodies.-The, framing of road vehicle bodies comprises laterally rigid transverse frames and intermediate connecting members connected at the joints by transverse layers of rubber so as to provide for torsional flexibility and longitudinal cushioning. The transverse frames comprise side pillars 1' - - 1<3> secured to the chassis 4 by metal box-section members 2 uniting with brackets 3 and roof members 6 connecting the pillars by means of metal caps 5. The cantrails 7 are in sections and are provided at their ends with metal caps 8 connected to the caps 5 by means of rubber vulcanized to each cap. The rear frame members 12 - - 14 and the wheel arch 11 are similarly connected to the rear pillar 1<3> by metal caps and vulcanized rubber. The scuttle frame comprises pillars 15 and cross member connected to the front pillars 1<1> by rails 16, 21 provided with metal caps connected to metal channels 18 by vulcanized rubber.
Patent GB-394063-A (GB)
Title: Improvements in and relating to a.c. voltage regulators
IPC: H01F29/12
Filed: 1932-02-17
Abstract: 394,063. Transformers. FERRANTI, Ltd. and PORTER, G. L., Hollinwood, Lancashire. Feb. 17, 1932, No. 4729. [Class 38 (ii).] In an induction-type regulator or transformer of the kind embodying two fixed coils 2, 3 having leakage reactance and one or more short-circuited movable coils 4 as in Specification 341,903, compensating coils A, B, C are provided connected in series, one such coil A, B being arranged adjacent each fixed coil and one C adjacent the mid position of each of the movable coils, the latter coils C each having twice as many turns as each of the former compensating coils A, B, Figs. 3, 4 and 5 (not shown), show connections in which part of the compensating winding is used as a secondary winding to provide positive, negative or reversible boost. Coil A or coil B or both may be included in the secondary circuit to give variable one way or reversible boost and the inclusion of unequal parts of each provides unequal maxima of boost. In Fig. 5 (not shown) the secondary circuit also includes some additional winding on coil A not included in the compensation circuit.
Patent GB-194281-A (GB)
Title: Improvements in control devices for brakes upon the four wheels of a vehicle
IPC: B60T11/06
Filed: 1923-02-19
Abstract: 194,281. Soc. Anon. des AÚroplanes G. Voisin. March 2, 1922, [Convention date]. Hand and other personal actuation; forcetransmitting mechanism.-In equalizing mechanism for the brakes of the four wheels of a vehicle, equalization as between the brakes or the two sides of the vehicle is effected by a swing bar connected to a pair of levers connected respectively to the brakes on the two sides, each of these levers being connected to a lever connected to a front wheel brake and pivoted upon a lever connected to the rear wheel brake on that side whereby equalization as between the front and rear brakes is effected. The lever c freely mounted upon the cross-shaft b is connected to the operating-pedal and hand-lever respectively by the rod d and link e and to the swing bar g by the rod s. The swing bar is pivoted to levers h, h<1> keyed respectively to sleeves i, i<1> freely mounted upon the shaft b. Arms o, o<1> rigid with the sleeves i, i<1> respectively, engage levers m, m<1> connected to the front wheel brakes and pivoted at n, n<1> upon levers k, k<1> connected to the rear wheel brakes. The levers k, k<1> are mounted freely upon the sleeves i, i<1>. When the hand-lever or pedal is actuated to apply the brakes, the swing bar g equalizes the force applied to the levers h, h<1>. Engagement of the arms o<1> with the levers m at first turns the levers k, m together about the shaft b and when the lever k is-held by the application of the rear brake, the lever m turns on the pivot n and applies the front brake. The brakes on the other side of the vehicle are similarly applied. To enable the brakes on one side of the vehicle to be applied if a control cable on the other side should break, stops are provided on the levers h, h<1> for limiting the swinging movement of the bar g. The rod s is provided with an adjusting- nut t within reach of the driver. According to the Specification as open to inspection under Sect. 91 (3) (a) the pedal and hand-lever may be connected directly or by rack and pinion to the rod s instead of by the lever c, and the lever h may actuate the levers m, k by a quadrant, a link, or a rack. This subjectmatter does not appear in the Specification as accepted.
Patent GB-540450-A (GB)
Title: Improvements in and relating to containers for use in conjunction with blowing apparatus for the distribution of solids in powder form
IPC: A01M9/00
Filed: 1940-03-15
Abstract: 540,450. Powder blowers. CLIFTON. S. G.. BROWN, J. M., and PLANT PROTECTION, Ltd. March 15, 1940, No. 4835. [Class 18] A cylindrical powder container 1 carries inlet and egress tubes 2, 4 arranged on opposite sides of the diameter of the container parallel to the axis of the outlet tube. A non-return valve 3 prevents entry of powder into the pump when this is of piston type and outlet tube 4 is blocked at its inner end. If this pump has a union adapted to attach a tubular member at an angle to the pump axis, the container has the outlet tube parallel to the pump axis. If the inlet and outlet tubes at the points where they enter the container are not parallel the inclination does not exceed 90 degrees. The tubes may be substantially tangential, a strainer may be provided in the outlet, and a filler tube may be provided such that the container is not filled above the level of the outlet tube.
Patent GB-749061-A (GB)
Title: Improvements in or relating to electrical order telegraph installations
IPC: G08B9/00
Filed: 1953-02-20
Abstract: 749,061. Order telegraphs. SIEMENS & HALSKE AKT.-GES.. Feb. 20, 1953 [Feb. 23, 1952; April 7, 1952], No. 4847/53. Class 40(1) The order telegraph system shown in Fig. 1, in which the order and its acknowledgement are effected by rotating field systems 3, 2 and relays or relay windings A, B, C are connected between corresponding wires to give warning if an order is not correctly acknowledged, is modified by the use of a single relay with three windings 4, 5, 6, Fig. 2, two of which are polarized by rectifier bridges. Specification 669,116 is referred to.
Patent GB-1498176-A (GB)
Title: Heating units for central heating systems
IPC: F24H9/20
Filed: 1975-01-31
Abstract: 1498176 Thermal storage heaters HOTPOINT Ltd 31 Jan 1975 [1 Feb 1974] 04871/74  Heading F4U A thermal storage heater for use in a warm air central heating system comprises a substantially U-shaped bimetallic element 23 responsive to the temperature of heated air from the core, the two arms 25 of the element being coupled by respective mechanical linkages to flap valves 13 controlling the volume of cold air passing through apertures 12 into a mixing chamber 6 to achieve a substantially constant output temperature from the heater. A centrifugal fan 17 in the mixing chamber draws air over the storage core, through apertures 12 and expels it into a lower plenum chamber 2. The bimetallic element 23 has the metal with the higher coefficient of expansion on the inner side of the U and the mechanical linkages have means for adjusting the movement of the flaps.
Patent GB-419808-A (GB)
Title: Improvements in and relating to the speed regulation of alternating current motors
IPC: H02P25/32
Filed: 1933-02-17
Abstract: 419,808. Motors. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.-(Assignees of Allgemeine Elektricitõts-Ges.; 2, Friedrich Karl-Ufer, Berlin.) Feb. 17, 1933, No. 4957. Void [Abridged as open to inspection under Sect. 91 of the Acts, Aug. 21, 1933]. Addition to 415,999. [Class 35.] Machines with vapour or like rectifiers in place of commutators.-A motor in which the commutation is effected by grid-controlled discharge vessels is supplied by one or more transformers, the secondary windings of which are connected to two discharge tubes and to the armature windings of the motor in such a manner that each motor winding carries current in each half period. In the form shown, the outer terminals of the transformer secondary windings 4-9 are each connected to an anode 11-22 whilst the cathodes of each two tubes corresponding to the same secondary winding are connected together and to the stator winding so that before passing through the neutral zone, the current direction in windings 24, 25 for example is in the direction 24, 25 but when the grid pressure of tubes 11, 12 is changed to negative, and that of tubes 13, 14 to positive, the current direction is 25, 24. In an alternative form, the stator winding is in the form of a closed ring, diametrically opposite tappings of which are associated with the same transformer winding. The rotary exciting winding 31 is energized over discharge tubes 34, 35 from a transformer 33 and these tubes may or may not be grid-controlled. Condensers may be connected in parallel with the field winding.
Patent GB-553622-A (GB)
Title: Improvements in or relating to plywood sheets
IPC: E04C2/12
Filed: 1942-04-15
Abstract: 553,622. Plywood. ACHESON, M. BACHTOLD-. April 15, 1942, No. 4977. [Class 145 (ii)] A plywood sheet, particularly suitable for the construction of doors, comprises an inner layer of spaced battens 2 to the outer surfaces of which lavers 1 of wood are glued, these outer layers being formed to provide air passages on their inner surfaces and, at the same time, to present a substantially continuous outer surface to which cover sheets 3 are glued. In the example shown in Fig. 1, the layers 1 consist of battens which are in loose contact with one another without any glue between them, so that air can penetrate to all parts of the sheet after it has been put together. In the example shown in Fig. 4, the layers 1 consist of skived sheets or relatively thick veneers which have been rolled or otherwise treated to form cracks 6 therein extending in the direction of the grain, the sheets being arranged with the cracks inwards. The layers 1 can also be composed of strips of cracked veneer arranged edge to edge. In some cases, the cracks may extend completely through the sheets. In another modification, the layers 1 are composed of relatively wide boards arranged edge to edge and provided with narrow channels open at the inner surfaces of the boards and formed by saw cuts extending longitudinally of the boards and of appropriate depth. Closing pieces 8 may be applied at the edges of the finished sheet. Any desired thickness may be given to the finished sheet by the addition of further inner layers of spaced battens, the battens of each layer being disposed transversely of those of the adjacent layer.
Patent GB-367562-A (GB)
Title: Improvements in or relating to the manufacture of preformed building units
IPC: E04C2/06
Filed: 1931-02-17
Abstract: 367,562. Reinforced building blocks. DYKE, H., 49, Beatrice Avenue, Norbury, London. Feb. 17, 1931, No. 5005. Addition to 320,353, [Class 87 (i), Bricks &c.]. [Class 87 (i).] In the concrete or brick unit of the parent Specification the tubular reinforcing members are replaced by tubes d placed at the bottom of the unit and solid rods c pressed into the tubes d and projecting from the top of the unit. In erecting a wall the rods c of one slab are inserted into the tubes d of the slab above. The inner rods c are threaded at e to engage a correspondingly threaded hook for lifting. When the units are of concrete longitudinal reinforcing bars b are provided.
Patent GB-1492361-A (GB)
Title: Optically active m-acyloxy-alpha(methylamino)methyl)-benzyl alcohols the pharmaceutically acceptable acid addition salts thereof and synthesis of same
IPC: C07D213/80
Filed: 1976-02-09
Abstract: 1492361 Optically active m Acyloxy-α[(methyl amino)methyl]benzyl alcohols INTERX RESEARCH CORP 9 Feb 1976 [10 Feb 1975 16 May 1975] 05020/76 Heading C2C Novel optically active forms of compounds of Formula I wherein R is C 1-20  alkyl, ethoxycarbonyl, benzyloxycarbonyl or phenyl, R<SP>3</SP> is H, CH 3  or phenyl or 2-, 3- or 4-pyridyl and n is 0 or 1 or acid addition salts thereof are prepared by cleaving the R<SP>1</SP>COR<SP>3</SP> moiety from a compound of Formula IV see Specification 1,492,362. Pharmaceutical compositions in conventional forms for oral, rectal or parenteral administration and having mydriatic, antiglaucomutous, vasoconstrictor antiasthmatic and decongestant activity comprise an above novel compound and a carrier or diluent.
Patent GB-1208253-A (GB)
Title: Process for the treatment of black liquor
Inventor: SHAH INDRAVADAN SHANTILAL
IPC: D21C11/10
Filed: 1969-01-29
Abstract: 1,208,253. Salts from black liquor. CHEMICAL CONSTRUCTION CORP. 29 Jan., 1969 [8 Feb., 1968], No. 5064/69. Heading C1A. [Also in Division D2] A process for the treatment of black liquor comprises concentrating the weak black liquor by contact with hot air; reacting the product with excess air at elevated temperature, giving a solids phase containing sulphate, and a hot flue gas; using the flue gas to heat the air passing to the concentration step by indirect heat exchange; reducing the solids phase with a reducing agent at an elevated temperature, to give a reduced solids phase containing sodium sulphide, and a hot residual gas; and dissolving the reduced solids phase in an aqueous liquid to form green liquor for recycle. The weak black liquor, preferably of 10-20% solids content, which may be oxidized or unoxidized, is passed to an evaporator unit which may comprise one or more evaporators where the liquid is contacted with hot air in, e.g. a Venturi contactor, a centrifugal or cascade type evaporator. The moist gas exiting from the contactor unit may be discharged direct to the atmosphere. The concentrated solution is then passed to a reactor, preferably a fluidized bed reactor, while some of this stream may be recycled to the contactor entry. The concentrated solution is reacted at high temperature with process air, giving a solids phase and a hot flue gas. The hot flue gas is used to preheat the air used in the evaporators, and then may be discharged to the atmosphere, after a scrubbing with an aqueous liquid solution to remove solid salt particles. The solid from the reactor is then passed to second reactor, where it is reduced, e.g. by carbon monoxide, natural gas, powdered coal or a limited amount of the concentrated black liquor stream. The reduced solid phase is then dissolved, and recycled to the pulping process. The off-gas from the second reactor may be combined with the hot flue gas before passage through the heat exchange. Water may be passed in heat exchange with the first reactor contents to raise steam.
Patent GB-675468-A (GB)
Title: Froth flotation process
IPC: B03D1/06
Filed: 1948-02-20
Abstract: The soluble constituents of saline deposits are separated by froth flotation using a pulp consisting of solid particles of the saline material in a saturated solution of at least one soluble constituent thereof, a mechanical emulsion prepared physically by emulsifying a substantially water-and brine insoluble collector reagent in part of the brine being fed to the pulp and being dispersed therein by agitation in the froth flotation stage, such step being performed in the absence of any active stabilizer. Collector reagents referred to are caprylic acid with or without cresylic acid, lauric acid, myristic acid, oleic acid, stearic acid for floating halite from sylvinite; a mixture of hexadecyl, octadecyl and octadecenyl amines with butamid for floating sylvite from sylvinit<\>e.  The process of Specification 481,100 may also be used.  Specification 669,390 also is referred to.
Patent GB-683146-A (GB)
Title: Improvements in or relating to electric resistance elements
IPC: H05B3/00
Filed: 1950-02-28
Abstract: 683,146. Electric resistance furnaces. SIMS, C. W., ELLIS, C. C., and WILDBARFIELD ELECTRIC FURNACES, Ltd. Feb. 9, 1951 [Feb. 28, 1950], No. 5120/50 Class 39(iii) A furnace with heating elements a of silicon carbide or similar non-metallic material the resistance of which increases rapidly with age has a switch for periodically connecting the elements selectively in a succession of series parallel arrangements, whereby the total resistance of the furnace heater remains substantially constant as the resistance of each element increases with use. Where twelve silicon carbide resistances are used, they are connected successively in two parallel groups of six in series, four parallel groups of three in series, three parallel groups of four in series and six parallel groups of two in series. A ballast resistor 4 is connected in series with the heater network, and at each stage the junctions between the elements which are nominally at the same potential are joined by equalizing connections. The elements a may be connected as shown to a rotary switch B, or they may be connected to a terminal board to which a series of link boards is selectively applied to connect the elements in the desired series-parallel arrangement.
Patent GB-1337552-A (GB)
Title: Liquid crystal cells
IPC: G02F1/1341
Filed: 1972-02-03
Abstract: 1337552 Sealing glass plate structures ELECTROVAC FABRIKATION ELEKTROTECHNISCHER SPEZIALARTIKEL GmbH 3 Feb 1972 [4 Feb 1971] 5129/72 Heading C1M [Also in Division H4] In a modification of the liquid crystal cell construction described in Specification 1,337,551 comprising a plurality of spaced plates of inorganic material such as glass, all, or all except one being light-transmissive, and in which grains in a single layer between plates act as spacers, the grains of the single layer are surrounded by solder glass having a lower softening temperature. Spaces in the composite grain/ solder glass layer are occupied by liquid crystal material and the structure heated to softening temperature of the solder glass to seal the parts together. Electrodes may be provided at each side of the composite layer, to provide a display device.
Patent GB-828350-A (GB)
Title: Improvements in or relating to the production of alginate jellies and the like
Inventor: MERTON ROBERT RALPH
IPC: A23L29/256
Filed: 1957-02-14
Abstract: A powdered product which will dissolve in water and set to a jelly comprises a watersoluble salt of alginic acid, e.g. sodium alginate (calcium content not exceeding 0.2%), one or more salts whose cations form a water-insoluble salt with alginic acid and which has a solubility product not exceeding 10-4 at 25 DEG  C., an alkali-metal carbonate e.g. sodium carbonate, and an edible solid acidic substance, e.g. anhydrous citric acid, which liberates hydrogen ions immediately on contact with water.  The salt whose cations form an insoluble salt with alginic acid may be calcium carbonate, tartrate, citrate, sulphate or di- or tri-calcium orthophosphate and should pass a screen of 200 meshes to the lineal inch.  The calcium salt may be a mixture of calcium salts which will react with the alginate at different rates, e.g. calcium carbonate and tricalcium phosphate. The watersoluble salt of alginic acid should pass a screen of 100 mesh, preferably one of 240 mesh, and may be prepared by mixing it in a moist state with part of the alkali metal carbonate to form a paste, drying and milling to the required degree of fineness.  The product may contain sugar, of which part may be mixed with the alginate/carbonate paste, and colouring matter may also be added. U.S.A. Specification 2,441,729 is referred to.ALSO:A powdered product which will dissolve in water and set to a jelly comprises a watersoluble salt of alginic acid, e.g. sodium alginate (calcium content not exceeding 0.2%), one or more salts whose cations form a water-insoluble salt with alginic acid and which has a solubility product not exceeding 10-4 at 25 DEG  C., an alkali metal carbonate, e.g. sodium carbonate, and an edible solid acidic substance, e.g. anhydrous citric acid, which liberates hydrogen ions immediately on contact with water.  The salt whose cations form an insoluble alginate may be calcium carbonate, tartrate, citrate, sulphate or di- or tri-calcium orthophosphate and should pass a screen of 200 meshes to the lineal inch.  The calcium salt may be a mixture of calcium salts which will react with the alginate at different rates, e.g. calcium carbonate mixed with tricalcium phosphate.  The water-soluble salt of alginic acid should pass a screen of 100 mesh and preferably one of 240 mesh and may be prepared by mixing it in a moist state with part of the alkali metal carbonate to form a paste, drying, and milling to the required degree of fineness.  The product may contain sugar of which part may be mixed with the paste of alginate and carbonate and colouring matter may also be added.  U.S.A. Specification 2,441,729 is referred to.
Patent GB-752465-A (GB)
Title: A process for the hydrogenation of carbon monoxide
IPC: C07C1/04
Filed: 1954-02-22
Abstract: The catalytic hydrogenation of carbon monoxide for the production of hydrocarbons containing more than one carbon atom in the molecule in a liquid medium is effected in a reactor in which the temperature of the catalyst suspension in the reactor rises to the extent of 10 DEG to 100 DEG  C. in the direction of flow of the gas.  In large-scale reactors this rise may be obtained by reducing the area of the cooling surfaces in the direction of gas flow or by providing independent cooling systems.  The product may contain up to 90-95 per cent of gasoline hydrocarbons with not more than 6-10 per cent of methane.  The catalyst efficiency may be 700 grams of hydrocarbons per gram of iron.