baber/WOPTO huggingface dataset:
Patent GB-774456-A (GB)
Title: Improvements in or relating to steam generators
IPC: F22B1/28
Filed: 1955-06-01
Abstract: 774,456. Electric steam generator. SCHREYER, E. P. June 1, 1955, No. 15757/55. Class 39(3) A steam generator comprises an electric heating element 15 mounted in a bellshaped cavity in a float 11 so that the element is just immersed in the water when the float is supported by water in a container, the cavity having a tubular outlet 22 for the steam. A flexible steam outlet pipe 23 attached to the pipe 22 has a tap 24, which when closed traps steam in the cavity, so reducing water level in the centre 13 of the float, thus bringing the heating element 15 clear of the water. The float is a hollow annular ring with a central opening 13 closed at the top by a removable domed cover 14. The element 15 is supported by a rod 16 from a spider 17 and has at one end a thermostatic switch 19 responsive to the temperature of the element, so that when the latter is raised above water level, current supply to the element is cut off.
Patent GB-515263-A (GB)
Title: An improved manufacture of resins
IPC: C08F14/14
Filed: 1938-05-27
Abstract: 515,263. Resinous condensation products ; halogenated hydrocarbons. STANDARD OIL DEVELOPMENT CO. May 27, 1938; No. 15872. Convention date, Oct. 6, 1937. [Class 2 (iii)] Resinous materials are prepared by condensirig a 2-alkyl-3-chlorpropene with benzene by heating the compounds together in the presence of a catalyst of the aluminium chloride or boron fluoride type, at a temperature between 100‹ and 220‹F. The alkyl group in the propene compound is preferably one containing from 1 to 6 carbon atoms, e.g. the methyl, ethyl, propyl, or amyl group. Substances which are polymerizable under the reaction conditions such as styrene or butadiene may be added to the materials to be condensed. In an example, 2-methyl-3-chlorpropene and benzene are heated in the presence of aluminium chloride and the excess benzene distilled off. The resinous product is boiled with water, dissolved in chloroform and precipitated by ethyl alcohol. Alternatively, the benzene solution of the resinous product may be washed with hydrochloric acid, and the resin precipitated by a low-boiling alcohol. The resins may be added to lubricating oils either as thickeners or to improve the colour and fluorescence, or may be used as plasticizers for chlorinated rubber ; they are compatible with hydrocarbon oils and resins and may be milled with rubber or other plastic materials. 2-alkyl-3 chlorpropenes are prepared by chlorinating the corresponding olefines, e.g., isobutylene or #,#-methyl-ethyl-ethylene, under conditions where the chlorine replaces a hydrogen of a saturated carbon atom. The chlorine is intimately mixed with the olefine, e.g. by injecting the chlorine through atomizing jets, and the flow is regulated so that at no time is chlorine in excess. In an example, isobutylene or a mixture containing isobutylene, preferably in the liquid state, is' treated with a stream of chlorine at a temperature below 212‹F. for 1 to 5 seconds, overheating being prevented by external cooling elements or by means of evaporating an external cooling agent. The reaction product is scrubbed with water in a tower. According to the Specification as open to inspection under Sect. 91, resinous materials are obtained by condensing alkyl or aryl 2-substituted-3-halo-propene compounds in general with aromatic materials in general. The aryl groups of the aryl halo-propenes may contain alkyl, sulphate', amino or hydroxyl groups. Specified propene compounds include 2-ethyl-3-brompropene, 2-phenyl-3 chlorpropene and 2-naphthyl-3-chlorpropene. Specified aromatic materials include naphthalene, substituted derivatives of benzene and naphthalene, e.g. those containing alkyl, sulphate, amino and hydroxyl groups, and materials of the type derived from coal tar or by the destructive hydrogenation of a petroleum oil. Alkyl or aryl. halo propenes in general are prepared similarly to the chlorpropenes specified above, aryl propenes specified for treatment including 2-phenyl-and 2-naphthyl-propylene. This subject-matter does not appear in the Specification as accepted.
Patent GB-858831-A (GB)
Title: Pressure reducing valve mechanisms
Inventor: DEWAR DOUGLAS
IPC: G05D16/20
Filed: 1956-05-23
Abstract: 858,831. Electrically-actuated valves. DUNLOP RUBBER CO. Ltd. May 1, 1957 [May 23, 1956], No. 15893/56. Class 135. A fluid-pressure reducing valve comprises a valve 33 closed on its seat 32 by a spring 47 and opened by a solenoid 40 to control fluid flow from a high pressure source 2 to a low pressure region at 12 via a coaxial core passage in the solenoid, and a switch 14 actuated in response to a predetermined downstream pressure to de-energize the solenoid and close the valve. On opening the valve by energizing the solenoid through an isolation switch in lead 25, pressure fluid passes from container 2 via passage 36, passage 48 in the armature 44 carrying the valve, seat 32, chamber 30 and passage 12 to a device to be operated. When pressure in chamber 30 reaches a certain value, it depresses a spring- loaded plunger 20, 16, 18 which opens the normally-closed switch 14 and closes the valve. The pressure at which this occurs is adjusted by a screw 22 which positions the switch button 19 relative to the plunger.
Patent GB-1002920-A (GB)
Title: Character recognition apparatus
IPC: G06V10/88
Filed: 1964-04-17
Abstract: 1,002,920. Automatic character reading. AUGUSTA GAMBA. April 17, 1964 [May 11, 1963], No.15941/64. Heading G4R. [Also in Division G2] Character recognition apparatus is adopted to discriminate between two classes of patterns, Class A and Class B, even when a particular character of either class is written in a variety of ways by different people or is printed in type of any one of a number of fonts. As shown, Fig. 1, an optical structure 1 contains a large number of optical fibres 5, only two are shown, connecting an input surface 2, illuminated by light 3, and an output surface 4, and crossing a central plane 7 many times at points 8. If, therefore a tape 9 is inserted in plane 7 having an opaque character on a transparent record medium, or vice versa, light only reaches surface 4 when a transparent surface is present at all points 8 where a particular fibre 5 crosses plane 7. A series of samples of each pattern of Class A, e.g. ten samples, are introduced in plane 7 and a photographic slide A at surface 4 given an exposure of one-tenth of that necessary for a full exposure, for each sample. A similar procedure is adopted for a series of samples of each pattern of Class B to produce a second slide B. Then a photographic negative slide A is made of slide A and similarly a negative B of slide B. Slides A and B are then superimposed to form slide 11 and slides A and B superimposed to form slide 12. The slides 11, 12 thus form filters whose transparency at any point over their surfaces is proportional to the probability of whether the pattern is of Class A or Class B. Thus by forming two images from that appearing at surface 4, when an unknown pattern is present at plane 7, by means of semi-transparent member 10 and passing the images through the filters 11, 12, respectively, more light appears at 13 or 14 according to whether the unknown pattern is of Class A or Class B. The structure 1 is made easier to manufacture by forming a number of bridges 16, Fig. 6, each of which has a large number of optical fibres 17 therein arranged in a random manner and leading from one surface 18 to another 19. The surfaces 18, 19, of all the bridges 16 are arranged to lie in one plane 20 where the unknown pattern is placed. In a modification, Fig. 8, not shown, for use with patterns which are not on transparent surfaces, e.g. black print on normal paper, each fibre is interrupted a number of times at one plane and light only passes through the respective fibre if the surface opposite each interruption is reflecting. In further forms mirrors and/or prisms are used instead of optical fibres.
Patent GB-601909-A (GB)
Title: Improvements in aircraft with sustaining airscrews
IPC: B64C1/00
Filed: 1945-06-22
Abstract: 601,909. Helicopters. BRUEL, A. A. L. June 22, 1945, No. 16006. Convention date, Dec. 5, 1942. [Class 4] In order to balance the torque produced on an aircraft by a sustaining airscrew 2, Fig. 1, a blowing airscrew 10, with axis parallel with the longitudinal axis of the aircraft, is used to blow a stream of air on to horizontal and vertical airfoils 5 and 7, which are provided with adjustable flaps as shown; alternatively, the airfoils are themselves adjustably mounted to allow alteration of their angle of attack. The airfoils are carried by beams 3 and 4. Among modifications described is an aircraft with a sleeve, mounted by a spider in rear of the body and containing within it a blowing airscrew for acting upon airfoils at the rear end of the sleeve. Automatic means for adjusting a vertical flap 6, shown in horizontal section, Fig. 5, in order to obtain a balancing moment for the airscrew torque comprises a worm 18 slidably connected to a driving shaft 16 and meshing with a worm-gear 19 to drive the sustaining-screw shaft 20. Sliding of worm 18 alters the deflection of vertical flap 6 by means of links 26, 29 actuated by a carriage 24 attached to the worm 18. The Specification as open to inspection under Sect. 91 comprises also the subject-matter of Specification 601,952. This subject-matter does not appear in the Specification as accepted.
Patent GB-140126-A (GB)
Title: Improvements relating to reinforced concrete for marine purposes
IPC: E02D5/22
Filed: 1918-10-03
Abstract: 140,126. Ferguson, L. R. Oct. 3, 1918. Drawings to Specification. Piers, sea walls, and the like; piles. - Reinforced-concrete piles, columns, cylinders, &c., used in the construction of docks, wharves, piers, and other structures which are partly submerged in sea.-water, have the reinforcements, or those parts of the reinforcements above low-water level, formed of, or coated with, a non-corrodible or rust-resisting metal, metals, or amalgam, such as tin, zinc, copper, &c., whereby disintegration of the concrete is prevented. Reference has been directed by the Comptroller to Specification 148,910.
Patent GB-1141871-A (GB)
Title: Shipping container for radioactive material
IPC: G21F5/005
Filed: 1966-04-13
Abstract: 1,141,871. Shielded containers for radioactive material. NATIONAL LEAD CO. 13 April, 1966 [26 April, 1965], No. 16267/66. Heading B4Q. A shipping container for irradiated fuel elements comprises an inner cavity bounded by a cylindrical wall 104 and lead radiation shielding 50 interposed between the wall 104 and a further cylindrical wall 60. An outer wall 22 defines with the wall 60 an annular space which is filled with a thermal shield material 244. Preferably, this material 244 is an alloy of lead and lithium having a melting point well below that of the lead radiation shielding 50 so that in the event of the container being subjected to the heat of a fire the material 244 may flow out of holes 240 provided in the wall 22. The thermal shield material 244 is also provided on the base 64 of the container, the base having release holes 262. Similarly, the container closure 160 is provided with the material 244 and release holes 270. To improve thermal conductivity through the material 244 to facilitate cooling of the fuel elements during normal function of the container, spaced layers of steel 246 (Figs. 3, 4, not shown) are incorporated in the material. In a modification (Fig. 5, not shown) the thermal shield material comprises water which boils off through valves or fusible plugs in the event of a fire. Alternative solid thermal shield material is lead alloyed with tin or antimony; alternative liquid material is glycol or sodium hydroxide. Reference has been directed by the Comptroller to Specification 973,448.
Patent GB-734938-A (GB)
Title: Improvements in and relating to recuperative heat exchangers
Inventor: RITZ HEINRICK LUDOLF
IPC: F28D19/04
Filed: 1952-06-27
Abstract: 734,938. Plate heat-exchangers; air preheaters. PARSONS & CO., Ltd., C. A. June 22, 1953 [June 27, 1952], No. 16285/52. Classes 64 (1) and 64 (3). An annular heat:exchanger (e.g. an air preheater) comprises an assembly of arcuately formed corrugated plates alternating with similarly formed plain plates, alternate corrugated plates in the assembly being so corrugated that one of the heat exchanging fluids (e.g. combustion air) is caused to flow in a circumferential direction whilst the corrugations of the intermediate corrugated plates are such that the other heat exchanging fluid (e.g. turbine exhaust gas) may flow radially or alternatively axially through the annulus, the space 5 formed between the ends of the arcuately formed plate assembly providing inlet and outlet ducts for the fluid flowing in a circumferential direction. Fig. 1 shows an arrangement comprising alter.- nating corrugated sheets 2, 3 with interposed plain sheets 1. Cold combustion air enters the space 5 which houses a combustion chamber 4 cooled by the air. The air from the space 5 flows through the outer set of circumferential passages (see arrows) formed by corrugated plates 2 to a return member formed by radially corrugated sheets 10 from which the air flows back through the inner set of circumferential passages to the combustion chamber 4. Hot gas from the turbine exhaust enters the central passage 12 and flows through radially extending passages formed by corrugated plates 3 to an outer space 15 from which the cooled gas passes to an outlet duct 17. In Fig. 3 plain arcuate sheets 20 are interposed between alternating corrugated sheets 18, 19 to give an axial flow of the heating gases and a circumferential flow of the air to be heated through the heat-exchanger.
Patent GB-1067588-A (GB)
Title: An assembly of a motion-transmitting control means and mounting means therefor and method of manufacturing the same
IPC: B29C45/14
Filed: 1964-04-20
Abstract: 1,067,588. Bowden mechanisms. TELEFLEX Inc. April 20, 1964 [July 26, 1963], No. 16331/64. Headings F2K and F2P. The flexible thermoplastic outer casing 16 of a Bowden cable conduit is mounted by a thermoplastic end-piece 44, bonded to the casing 16. The end-piece is injection-moulded around the casing end and may have a radial or tangential lug (56), Fig. 7 (not shown), having integral metal eyelets or snap-studs (57) engaging mounting slots. Alternatively, the end-piece may be held by a split metal clamp (54) between two spaced annular flanges (50), (52), Fig. 6 (not shown). An annular end flange 46 extends to the diameter of the inner extruded thermoplastic tube 12 to centre the movable inner cable. Between the inner tube 12 and casing 16 spaced wires (14), Fig. 8 (not shown), of steel or plastic or a combination of both are wound on a long lead with an alternative extra short lead strengthening wires. The end of the conduit may be flared in the end-piece as at 15, or straight.
Patent GB-324606-A (GB)
Title: Improvements in rail joints for toy railway tracks
IPC: A63H19/30
Filed: 1929-05-28
Abstract: 324,606. Huck, A., (trading, as Bub, K., [Firm of]). Oct. 8, 1928, [Convention date]. Rails and tracks.-A device for connecting adjacent sections of a toy railway track comprises a U-shaped wire element a that is slidingly guided in slots c in the end sleeper d' of one section and is formed at one of its free ends with a hook i adapted to be passed through a slot c in the end sleeper d of the adjacent rail section and to engage against the inner surface thereof, the hook i and the opposite free end b having inwardly directed extensions to enable the connection to be effected simply by pressure exerted on the upwardly bent intermediate part f of the element.
Patent GB-102490-A (GB)
Title: Improvements in Sparking Plugs.
Inventor: HENRY RENE
IPC: H01T13/16
Filed: 1916-11-16
Abstract: 102,490. Henry, R., and Herrmann, E., (Assignees of Weber, G.). Dec. 2, 1915, [Convention date]. Sparking-plugs.- A ventilated plug has an electrode which is tubular in its outer part, the tube a communicating with the outer air by means of a ring of holes d, corresponding radial passages f and recesses g in the mica insulator, and orifices k in the body of the plug. The insulator is formed with an annular recess h., and a space is left between it and the plug body. A cup-shaped member n of fibre or other insulating-material screwed on the lock-nut l supports a perforated dish p, which serves for a terminal and is gripped between nuts t, r so as to be in electric connexion with the central electrode. Alternatively, the lead may be connected directly to the central electrode.
Patent GB-671873-A (GB)
Title: Improvements in or relating to firearms for launching self-propelled projectiles
IPC: F41F3/045
Filed: 1950-07-03
Abstract: 671,873. Rocket-launching firearms. ANSTALT FUR DIE ENTWICKLUNG VON ERFINGDUNGEN UND GEWERBLICHEN ANWENDUNGEN ENERGA. July 3, 1950. [July 14, 1949] No. 16511/50. Class 92 (ii). Relates to firearms for launching self-propelled projectiles, of the kind comprising a barrel 1 open at the rear, trigger mechanism 4, a device 22 for holding the projectile in the barrel, and a mechanical percussion device which is automatically re-set by the direct action of the propellant gases on a strikercarrying hammer 25. According to the invention, the device 22 is freed by the hammer and can also be freed manually by at least one external member. The trigger of the gun shown imparts longitudinal movements to a spring-controlled rod 18 through the medium of a lever 11 which can be held against movement, when desired, by a catch 12. Rearward movement of the rod 18 against the action of its spring 33, Fig. 8, rocks a lever 39 which in turn rocks a lever 28 and permits the rocking of a lever 41. These two levers rock about the same pivot, are urged by springs into contact with cam surfaces on the lever 39, and are formed with catches which at different times, hold the hammer 25 in the retracted position shown. Normally the lever 28 alone, by its catch, holds the hammer, and when the trigger is pulled the lever is rocked to release the hammer which then rotates about a pin 30 under the action of a spring 27. During this motion of the hammer a pin 31 mounted upon it engages with a surface on the device 22 and rocks the latter so that its part 23 no longer holds the projectile. The hammer is held when it is driven back by the propellant gases to the position shown by the catch on the lever 41, but when the trigger is released the lever 39 enables the catches to reverse their positions, i.e. to return to the position shown. A pair of buttons integral with the device 22 and disposed one on either side of the casing housing the percussion mechanism, are provided for manually moving the device to an unlocking position. A pad 44 cushions the backward motion of the hammer. In a modification, Figs. 11 and 12 (not shown) the device 22 pivots in a clockwise direction to release the projectile and in another modification, Figs. 13 and 14 (not shown) it is given a downward sliding movement.
Patent GB-627499-A (GB)
Title: Improvements in or relating to two-way clutch mechanisms
IPC: F16D21/06
Filed: 1946-05-31
Abstract: 627,499. Clutches. ATWOOD, S. B., and ATWOOD, J. T., (trading as ATWOOD VACUUM MACHINE CO.). May 31, 1946, No. 16586. Convention date, Oct. 14, 1942. [Class 80 (ii)] A two-way friction clutch between a driving member 10 and co-axial driven shafts 12 and 13 comprises a single pressure plate 20 arranged between friction discs 15 and 16 on the shafts 12, 13 respectively. The plate 20 is moved in one direction or the other to engage one or other of the clutches by means of a sliding sleeve 53 carrying rollers 56, 57 which engage arm 46 or 47 of a lever 42 to move one of plates 37 or 36 to load springs 38 which act on a plate 34 connected to the pressure plate 20 by bolts 32. In the neutral position shewn the plate 20 is centralised by springs 30, 31. Specification 561,014 is referred to.
Patent GB-1356802-A (GB)
Title: Reaction between polyolefins and maleic anhydride
IPC: C08F8/46
Filed: 1971-05-24
Abstract: 1356802 Polyolefin-maleic anhydride reaction products BP CHEMICALS INTERNATIONAL Ltd 15 May 1972 [24 May 1971] 16626/71 Heading C3P Polyalkenyl succinic anhydrides are prepared by reacting a polyolefin with maleic anhydride in the presence of up to 0À2 weight per cent of iodine, added after at least 25% of the polyolefin has reacted. The polyolefin may be a polyisobutylene, isobutylene/butene copolymer, polypropylene, polybutene-1, polybutene-2 or poly 4-methylpentene-1. The products may be converted to polyalkenyl succinimides. Examples describe the reaction of polyisobutylenes of molecular weight 1250 and 2500.
Patent GB-1389935-A (GB)
Title: Covering surfaces for sports tracks
IPC: E01C13/04
Filed: 1972-04-11
Abstract: 1389935 Sports tracks TSENTRALNY SOVET DOBROVOLNOGO SPORTIVNOGO OBSCHESTVA PROFSOJUZOV LATVIISKOI SSR DAUGAVA 11 April 1972 16681/72 Heading A6D [Also in Divisions Dl and El] A flat covering surface for a track in a sports hall or stadium, suitable for athletes wearing spiked shoes, comprises a layer of elastic material (not shown) in which is embedded a three-dimensional network of interlocking twisted wires or strips 5 at least one of which runs transverse to the others. The network has a thickness greater than the length of the shoe spikes. The strips or wires are of metal or synthetic material. Preferably each strip is formed as a spiral. The network shown comprises three strips 5 interlocked to form knots 6. The elastic layer may be adhered on a concrete or asphalt base.
Patent GB-291770-A (GB)
Title: Improvements relating to the manufacture of yeast
IPC: C12N1/16
Filed: 1928-06-08
Abstract: 291,770. Jacobsen, K. A. June 8, 1927, [Convention date]. Yeast.-In the manufacture of yeast wherein a supply of nutrient solution is added continuously to a fermenting vat. fermented wort containing yeast being continuously discharged from the bottom of the vat, the supply of carbohydrate nutrient solution is periodically varied in such a manner in relation to the alternating budding and ripening periods of the yeast that an increased quantity of nutrient solution is added at such a moment relatively to each yeast ripening period which has a tendency to occur, i.e., when the budding capacity of the yeast is beginning to decrease, that such ripening period is prevented from arising and the yeast is kept in a budding condition and at a constant quantity while the fermented wort containing unripened yeast is directed into a separate ripening container in which the yeast ripens under aeration. A very large quantity of seed yeast may be used or a smaller quantity is used, in which case either the process is worked discontinuously for a time, or the yeast leaving the fermenting vat is led to a centrifuge from which the separated yeast is conducbed back to the fermenting vat until the desired yeast concentration in the latter has been reached. Ripened yeast is discharged continuously from the ripening container and led to the usual centrifuges.