baber/WOPTO huggingface dataset:
Patent GB-273713-A (GB)
Title: Fire extinguishing compounds
IPC: A62D1/00
Filed: 1927-06-27
Abstract: 273,713. Poleo Feuerl÷sch Apparate Ges., (Assignees of Poleo Feuerl÷scher Ges.). June 30, 1926, [Convention date]. Right to Patent relinquished. Chemicals.- A fire-extinguishing composition comprising methyl bromide and carbon tetrachloride has added to it a small proportion of another brominated substance, such as ethylenebromide., which is stated to prevent the formation of phosgene. An exemplary composition contains methyl bromide 60 per cent, carbon tetrachloride 35 per cent, and ethylene bromide 5 per cent.
Patent GB-675674-A (GB)
Title: A process of nitrating kerosene
Filed: 1949-06-28
Abstract: Kerosene having a boiling range of 100-350 DEG C is nitrated with a small amount of concentrated nitric acid (in the proportion of 3-5 ccs of nitric acid .of 40-45 DEG  B<\>ae to 1 litre of the kerosene) at normal temperature and pressure, the reaction mixture is allowed to stand until it separates into two layers and the top layer is decanted and given a wash with a relatively weak solution of a base, for example a 1 per cent solution of sodium bicarbonate.  The nitrated kerosene thus obtained has a higher flash point and ignition point than the original kerosene.
Patent GB-595816-A (GB)
Title: Improvements in or relating to aircraft with high speed stability
IPC: B64C17/00
Filed: 1945-07-06
Abstract: 595,816. Aeroplanes. CLEVELAND, F. J. (Boeing Aircraft Co.). July 6, 1945, No. 17345. Drawings to Specification. [Class 4] In an aeroplane having a fixed main supporting wing and capable of attaining speeds greater than that corresponding to the critical Mach number, a substantially horizontal aerofoil, more particularly a conventional tail plane and elevator, spaced longitudinally from the wing has a thickness ratio at least as great as that of the wing. This ensures that the lift of the tail plane decreases at least as rapidly as the lift of the wing with increase in speed above the critical Mach number so that normal elevator action is possible in the high-speed range. The wing and tail plane may each have a thickness ratio of 20 per cent.
Patent GB-1148651-A (GB)
Title: Improvements in and relating to gear pumps
Inventor: EYRE IVAN DAVID
IPC: F04C15/00
Filed: 1965-04-24
Abstract: 1,148,651. Rotary positive-displacement pumps. ARMSTRONG PATENTS CO. Ltd. April 22 1966 [April 24, 1965], No.17393/65. Heading F1F. In a rotary positive-displacement pump of the externally-meshing gear-type a pair of pumping gears 10, 20 are attached to rotatable shafts 12, 22 that are supported by axially-movable bearingsbushes 14, 16, 24, 26 lodged in parallel intersecting bores 28, 30 for accommodating the gears within a housing, or body, 18, a pair of axiallymovable cheek-plates 56 being situated between the gears and the bushes 16, 26 and defining with the housing and said bushes a chamber, which is connected to the high-pressure side of the gears by an axially-orientated groove (62), Fig.2 (not shown), in the housing, so that when the pump is operating the cheek-plates are pressed against the adjacent side-faces of the gears. The said chamber is sealed by O-rings 64 situated in the cheek-plate and the bushes 16, 26, respectively, and further O-rings 54 lodged in the said bushes, the latter rings also serving as springs to provide initial loading for the cheek-plates. Each of the cheek-plates has a skirt portion 58 that slidingly engages with a reduced-diameter portion 50 on the adjacent bush. The mutually abutting surfaces on the cheek-plates and adjacent bearing bushes are flat to prevent the plates and bushes rotating with the gears. The faces of the cheek-plates adjacent the gears and those of the bearing bushes 14, 22 may contain grooves (68), Fig.4 (not shown), in the region of the meshing gear-teeth to direct a proportion of the pumped liquid on to the shafts 12, 22 for effecting lubrication thereof, leakage liquid being collected in recesses 40, 42, within end walls 36, 38 for the housing 18, which recesses are connected by axial passages (48) to the inlet side of the gears. To facilitate entry and exit of liquid into and from the gear-tooth spaces, faces aforesaid on the cheek-plates and the bearing bushes 14, 22 may also contain further grooves (70) adjacent the said abutting surfaces. In a modification, Fig. 5 (not shown), the housing is constituted by a plurality of annular plates (72, 74, 76, 78) clamped between end-plates or walls (80, 82) and the shafts 12, 22 are supported by needle-rollers (84).
Patent GB-693500-A (GB)
Title: Improvements in or relating to clamps for securing scaffolding tubes
IPC: E04G7/16
Filed: 1950-07-12
Abstract: 693,500. Scaffolding clamps. HAWES, A. H. Oct. 10, 1951 [July 12, 1950], No. 17419/50. Class 20(ii) Each pair of jaws 12, 24 of a scaffolding clamp are hinged together at 22 and a nut 30 is pivoted at 28 to the jaw 12 and adapted to receive a threaded bolt 31 formed with a shoulder 37 which in the clamping position engages behind fork arms 36 on the jaw 24, the arrangement being such that by partially unscrewing the bolt 31 the bolt and nut can be swung about the pivot 28 to open the clamp. and the threaded part 33 of the bolt shank remains wholly within the nut and is thus protected from wear other than by co-action with the nut. The unthreaded part 34 of the bolt shank which is disposed between the fork arms 36 has a diameter smaller than the threaded part 33 and projections formed on the nut 30 are adapted to engage with the end of the threaded part 33 to prevent its withdrawal from the nut. The two inner jaws 12, 13 may be welded together or, as shown, secured together 'by a swivel pin 16. Opening movement of each outer jaw 24 is limited to approximately 90 degrees by engagement of a part 38 of the jaw 24 with a nose 39 on the hinge lug 21 of the inner jaw 12.
Patent GB-562018-A (GB)
Title: Improvements relating to heat exchange tubes and apparatus for use in their manufacture
IPC: B21C37/22
Filed: 1942-12-09
Abstract: 562,018. Heat exchange tubes. SUPERHEATER CO., Ltd. (Superheater Co.). Dec. 9, 1942, No. 17514. [Class 64 (iii)] [Also in Groups II, XXII and XXX] A heat exchange tube 1 for use in the transfer of heat from one fluid to another has its heat transfer surface extended by spaced substantially hemi - spherical projections formed by resistance welding balllike members 2 to the tube wall, the members by the pressure applied during welding being deformed and partially embedded in the tube wall and having an area of juncture therewith which is large relatively to the area of its fluid-touched surface so as to provide a rapid transfer of heat. The rows of projections may be staggered relatively to each other. One or more electric resistance welding units may comprise wheeled carriages 6 traversable on rails 5. The carriages support U-grooved work holders 7 which engage the bar 14 of a pair of busbars 14, 15 separated by insulated spacers 16 from the bar 15 which engages a contact block 18 on the carriage which is connected by a cable 17 to the welding electrode 20. This electrode which is moved by an hydraulic cylinder 24 on a guide 23 has a recessed end to receive a spherical ellipsoidal or avoid ball fed from a hopper 25 by a hollow pivoted arm 26, and carries a pair of electromagnets 36 provided with fingers 37 for holding a ball in the recess in the electrode when the feed arm is moved out of the way by a roller 42 carried by an arm 41 pivoted to the electrode holder 21. Between the bifurcated ends of the arm 26 is pivoted at 30 a block 29 having a recess to receive the ball from the bore of the arm 26 when the arm is in its lowest position, the block being provided with an eccentrically mounted pin 32 connected by a link 33 to a pin on the hopper so that the block remains vertical throughout. When the arm is in its lowest position the ball is held in the electrode by the electromagnets and the electrode continues its downward movement to weld the ball to the tube 1. On raising the electrode the arm 26 with the next ball in position in the block 29 is raised by the roller 42 engaging the lug 43 thereon. The tubes to be fed to the welding apparatus are rolled along skids 11 and aretemporarily held by thesurfaces 44 of crank operated cams 45 while they are cleaned by motor-driven metallic brushes 47, whereupon the portions 52.of the cams advance then along the skids to the welding units. The finished tubes are rolled away from the welding units down skids 13. The tube is turned on the supports to weld circumferentially spaced rows of projections and the carriages are moved axially to complete the rows. The apparatus may also be used to apply a limited number of balls to a tube to constitute stops for positioning a band or support axially of the tube.
Patent GB-1256075-A (GB)
Title: Polyolefin compositions stabilised by sulphur-containing carboxylic esters
Inventor: IBBOTSON ARTHUR
IPC: C08L27/00
Filed: 1968-04-11
Abstract: 1,256,075. Thio compounds. IMPERIAL CHEMICAL INDUSTRIES Ltd. 14 March, 1969 [11 April, 1968], No. 17543/68. Heading C2C. [Also in Division C3] Thiourea is reacted with thiodiglycol to give bis(2 - mercaptoethyl)sulphide and is reacted with lauryl acrylate to give dilauryl 4,7,10- trithiatridecan-1,13 -dioate.
Patent GB-893206-A (GB)
Title: Improved isoprene production process
Inventor: CHOFFE BERNARD
IPC: C07C11/18
Filed: 1960-05-18
Abstract: <PICT:0893206/IV (b)/1> Isoprene is produced continuously in a process which comprises (a) recovering formaldehyde from a solution thereof by polymerising to solid polymers, (b) regenerating formaldehyde by depolymerisation with aqueous acid, (c) reacting the resulting formaldehyde in acidic aqueous solution with isobutene to form 4,4-dimethylmetadioxane, (d) preferably separating the acidic aqueous solution and recycling this to (b), (e) decomposing the 4,4-dimethylmetadioxane by heating to give isoprene and formaldehyde, (f) combining this formaldehyde with the polymerisation mother liquors from (a) and preferably concentrating by distillation and (g) recycling the resultant solution to step (a).  Formaldehyde may be obtained by oxidation of methane or, preferably, methanol in unit A. In distillation unit B the product together with recycled formaldehyde from pipe d is distilled, methanol being recycled and concentrated formaldehyde solution being passed to polymerisation unit C. There in the presence of acids, alkali or alkaline earth metal hydroxides, ammonia, ammonium salts, amines, hexamethylene tetramine, or quaternary ammonium salts paraformaldehyde is formed having a formaldehyde content of 93%-99%.  The mother liquors pass by pipe e for concentration.  The paraformaldehyde is depolymerised in unit D with a recycled acidic solution e.g. containing 10% sulphuric acid and some formaldehyde from reactor E at 65 DEG C-75 DEG C.  The resultant solution enriched in formaldehyde, e.g. containing 20%-28%, is contacted in reactor E with a C4 refinery fraction containing isobutylene where at 10 DEG C-85 DEG C. 4,4-dimethylmetadioxane is formed.  This, after separating the acidic, aqueous solution for recycle, is fractionated in unit F then decomposed in unit G in the vapour phase at 200 DEG C.-280 DEG C. over glass wool, silicon carbide, quartz or rutile impregnated with phosphoric acid.  Inert diluents may be present, e.g. water vapour.  In unit H the effluent is condensed and the organic phase distilled to obtain isoprene and 4,4-dimethylmetadioxane which is recycled by pipe n.  The aqueous phase may also be distilled to separate 4,4-dimethylmetadioxane for recycle and a dilute aqueous formaldehyde solution which is concentrated in unit I with polymerisation mother liquors to a strength of 42%-46% and recycled to unit B or, if preferred, direct to polymerisation at C.
Patent GB-736083-A (GB)
Title: Improvements in or relating to die-heads for screwing machines
Inventor: MOUSLEY NORMAN KENNETH
IPC: B23G5/10
Filed: 1952-07-12
Abstract: 736,083. Screwing die-heads. WINN & CO., Ltd., C. Oct. 9, 1953 [July 12, 1952], No. 17645/52. Class 83 (3). A die-head for a screwing machine comprises dies (not shown), movable radially by an angularly-movable cam ring c, Fig. 1, having part-helical ribs e engaging the dies. Ring c is turnable on a body d which has keyed thereto a sleeve l surrounded by a collar g fixed to the cam ring. One or more pins p having rollers q extend radially from collar g to engage a slot or slots r in sleeve l, the slots having a helical or inclined portion and an axially-extending portion. Axial movement of sleeve l, effected manually or by an abutment on the machine, causes positive angular movement of the cam ring which opens the dies, opening being assisted by adjustable springs lying in a groove h. When the dies are closed, the roller lies in the axial portion of its slot, to lock the dies in cutting position and on completion of a threading operation, sleeve l is moved to cause the helical portion of its slot to allow the springs to snap the dies open. For cutting a tapered thread, sleeve l, Fig. 3, is provided with additional grooves v, the shallow inclined portions of which are engaged by the rollers q, the sleeve being moved axially during cutting to progressively open the dies. On completion of the cut, the rollers enter the steeply inclined portions of the grooves whereupon the dies are opened fully. Collar g is provided with additional openings for pins p which are positioned according to whether a tapered or parallel thread is to be cut. Groove u and gap t form traps for dirt and oil, and the gap also permits of machining face a of sleeve l or the end face of collar g to allow rollers q to extend further into the axial portions of the slots r if wear occurs at the juncture of the axial and inclined portions. Specifications 550,029 and 616,575 are referred to.
Patent GB-209684-A (GB)
Title: Improvements in or relating to machines for combing cotton and other fibres
IPC: D01G19/04
Filed: 1923-07-07
Abstract: 209,684. Lees & Co., Ltd., A., and Taylor, R. July 7, 1923. Combing - machines. -The clearer roller 1 for the detaching-roller of a cotton combing- machine is provided with means for adjusting its position, comprising cams or eccentrics 7, carried by a stud 7<a> mounted in arms 5, and engaging bearings 6a in the arms 6 carrying the roller 1. The cams 7 are rotated to adjust the roller and are secured by screws 8.
Patent GB-1269044-A (GB)
Title: Improvements in or relating to aircraft control systems
Inventor: BARLING GEOFFREY MICHAEL
IPC: G05D1/06
Filed: 1968-04-11
Abstract: 1,269,044. Automatic control of aircraft. ELLIOTT BROS. (LONDON) Ltd. April 1, 1969 [April 11, 1968], No. 17663/68. Heading G3R. In a system for causing an aircraft to capture a predetermined flight path, a signal dependent on vertical displacement of the aircraft from the flight path is compared with a signal dependent on vertical velocity of the aircraft so that, when they are equal, a signal is applied to the pitch channel of an automatic pilot to cause the aircraft to capture and track the flight path. As shown, signals from an ILS radio receiver 37, reduced in direct proportion to altitude by a radio altimeter 35 and representative of vertical displacement from the glide path, are compared by a logic circuit C with signals from a lag unit 25 representative of the vertical velocity of the aircraft relative to a desired rate of descent K' so that, when the compared signals are equal, a relay R is operated to change over switches S 1  S 2 . The signals representing vertical velocity are obtained by mixing signals from a vertical velocity detector 17, lagged at 27, with signals from a vertical accelerometer 15 integrated at 29. When operated switch S 1  applies the signals from ILS receiver 37, together with washed-out damping signals from a vertical gyro 33 and vertical accelerometer 15 integrated at 21, to the pitch channel of the aircraft autopilot (not shown), so that the glide-path is captured and followed. The simultaneous operation of switch S 2  disconnects the input to lag circuit 25 the signal from which then decays slowly to avoid sudden application of a signal to the autopilot. If desired, the signal from integrator 21 may be applied to logic circuit C to modify the point of capture in dependence on the vertical velocity of the aircraft.
Patent GB-110650-A (GB)
Title: Improvements in the Treatment of Parchmentized, or Vulcanized, Fibre and New Products obtained thereby.
Inventor: JOHNSON JAMES YATE
IPC: C08L1/06
Filed: 1916-12-11
Abstract: 110,650. Johnson, J. Y., (Diamond State Fibre Co.). Dec. 11, 1916. Parchment paper; boards and compound paper. -Relates to the treatment of vulcanized or parchmentised fibre or vegetable parchment to render it more waterproof or flexible and consists in treating the fibre, prior to drying, with water soluble or water removing matter to displace the water and then with matter which is soluble in the first named matter and capable of rendering the fibre more waterproof or flexible. Alcohols, acetone, and ether are mentioned as water-removing substances, and the fibre may be immersed in a succession of baths of such substances. Oils, fatty acids, rubber, gums, resins, nitro-cellulose solutions, and phenol-formaldehyde condensation products, such as Bakelite or Condensite, are mentioned as substances in which the fibre may be immersed after treatment with the alcohol &c. for rendering it more waterproof &c. In the cases in which the waterproofing &c. body is not soluble in alcohol the fibre may first be treated with alcohol then with a suitable solvent for the waterproofing &c. body to displace the alcohol and finally with the waterproofing &c. body. When a phenol formaldehyde condensation product is used, the treated fibre may be subsequently heated to cause the condensation product to solidify. Drying oils or vulcanizable substances when introduced into the fibre may be subsequently treated to modify their nature. A number of sheets treated with a condensation product may be placed one upon the other and heated under pressure to harden the condensation product and thereby produce a laminated product.
Patent GB-356300-A (GB)
Title: Improvements in liquid-break electric circuit breakers
IPC: H01H33/02
Filed: 1930-06-10
Abstract: 356,300. Oilbreak switches. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Hilliard, J. D. ; Hotel Hough, Schenectady, New York, U.S.A.) June 10, 1930, No. 17826. Convention date, June 10, 1929. [Class 38 (v).] Covers.-To prevent damage by shock to the insulating bushings of an oil or other liquid-break switch, a resilient mounting on the cover 5 is provided for each bushing. The bushing is cemented to a plate 8 which is bolted to a plate 10 having a gasket 13 or other resilient mounting, such as of rubber or cork board, on a further plate 12 to which the plate 10 is bolted at 14 with interposed resilient washers 16. Thus no shock can be transmitted to the bushings from the cover 5 when the switch is opened and an arc drawn. The current transformer coil 17 is mounted within an annular flange 11 and hermetically sealed against ingress of inflammable gas by means of a plate 18 which is bolted to a ring 20 cemented to the bushing. Similar resilient material 21 is interposed between the coil 17 and plate 18, and an earthing shield 22 is screwed to the ring 20. The members 8, 10 may alternatively be formed integral, and the case and transformer may be mounted outside the cover, in which case further sealing is unnecessary.
Patent GB-1456086-A (GB)
Title: Edge protector trim strip
IPC: B60J10/08
Filed: 1974-04-24
Abstract: 1456086 Trim strip SCHLEGEL (UK) Ltd 18 April 1975 [24 April 1974] 17886/74 Heading E1J A trim strip comprises a body 1 of U- shaped cross-section of polymeric material with a stiffening member, fins extending inwardly from the arms of the body towards its base, two fins 11 on one arm being softer than a fin 7 on the other-arm, the softer fins being extruded with the rest of the strip. The main body and fins 11 are of harder and softer plastics, eg PVC and vinyl nitrile; sealing member 13 is of rubber and attached by adhesive. In Fig. 3 (not shown) a strip with a sealing member is extruded in hard and softer rubber, e.g. sponge rubber.
Patent GB-298519-A (GB)
Title: Improvements in load equalizing machinery
IPC: F16D33/16
Filed: 1927-07-06
Abstract: 298,519. Sinclair, H. July 6, 1927. Driving-arrangements.-In load-equalizing machinery, a constant-speed driving machine, such as an electric motor, is coupled to the driven machine, such as a rolling mil! or electric generator, by a connection of continuously variable speed ratio, such as a hydraulic coupling of the F÷ttinger type, the driven machine being provided with a flywheel; the speed ratio of the coupling may be controlled so as to maintain a constant torque on the driving motor, and means may be provided for varying, in predetermined relation to the speed or other function of the connected machine, the value of the full-load torque transmitted by the coupling. The apparatus shown in Fig. 1 comprises a synchronous motor 1 driving through a hydraulic coupling 3, a flywheel 4 and a Ward Leonard generator 5. A torque motor 6 in the circuit of the motor 1 controls the inlet valve 8 and/or outlet valve of the coupling, and the full-load torque may be adjusted by means of a spring 11 of adjustable tension. When the prime mover is not electrical, the coupling is controlled from a mechanical torque governor consisting of a Wellman-Bibby or other resilient coupling, a ring 35, Fig. 5, having internal teeth meshing with axial teeth 34 and helical teeth 38 being moved axially in proportion to the torque, and acting through multiplying levers 40, a slidable collar 41, and lever 18 on the inlet and/or outlet valve. In order that the full-load torque may vary with speed &c., a centrifugal governor, pressure-operated piston, or other member may act on the parts controlling the hydraulic coupling.
Patent GB-930400-A (GB)
Title: Rectification of molten salt baths
Inventor: HEWSON ROBERT LESLIE
IPC: C21D1/46
Filed: 1961-05-17
Abstract: 930,400. Rectifying molten salt baths. IMPERIAL CHEMICAL INDUSTRIES Ltd. April 30, 1962 [May 17, 1961], No. 17985/61. Class 82. A molten salt bath comprising at least two of the chlorides of barium, sodium and potassium and optionally calcium chloride and/or alkali metal fluoride, is rectified by introducing hexachloroethane into the molten bath. The hexachloroethane may be introduced as solid pellets or preferably as a vapour. In a preferred form of apparatus the hexachloroethane pellets 6 are introduced into a tube 3 which is constricted into a dip tube 4 which extends into the bath of molten salt 1. The tube 3 is closed by a cap 5 and the pellet 6 held at the constriction between tubes 3 and 4 is vaporized by the heat of the bath and the vapour enters the bath via the lower end of tube 4.
Patent GB-964295-A (GB)
Title: Improvements in and relating to electric circuit-breakers for high voltages providedwith a pneumatic driving mechanism
IPC: H01H33/32
Filed: 1962-05-10
Abstract: 964,295. Pneumatic actuation of switches. COQ N.V. May 10, 1962 [May 12, 1961], No. 18086/62. Heading H2B. A circuit breaker 1 is actuated by a piston 6 sliding in a cylinder 5. Application of compressed air at 19b forces a piston 17 down to open a valve 12 admitting compressed air from source 13 to a cylinder 41 to release a stop 38 and, through a check valve 32, to force piston 6 downwards to close the breaker. As the piston 6 approaches the end of its travel it closes off a vented conduit 10, air from below the piston then escaping only through a small leak 37 in a second check-valve 36, causing a retarding action. A cam 55 closes a valve 47 in conduit 19b to prevent pumping of the piston. Application of compressed air at 22 forces a piston 21 up to open a valve 15 admitting compressed air through the check valve 36 to drive the piston 6 upwards to open the breaker. At the same time air is passed through a conduit 53 to a chamber 46 to close the valve 47 and prevent any attempt to reclose the breaker while the opening command persists.