baber/WOPTO huggingface dataset:
Patent GB-939652-A (GB)
Title: A process for effecting selective reduction of oxides of nitrogen in a gas containing oxides of nitrogen and free oxygen
IPC: B01D53/86
Filed: 1960-06-23
Abstract: Selective reduction of nitrogen oxides in, and recovery of heat by combustion of, gases containing oxides of nitrogen and free oxygen are effected by adding NH3, and contacting the resulting gas mixture in a first zone with an Fe, Co, Ni, Pt, Pd, Rh, Ru, Ir, or Os catalyst, adding a gaseous fuel to the effluent, and contacting the resulting mixture in a second zone with one of the same group of catalysts, to effect high heat release in the second stage.  In the first zone, NH3 may be in excess of the stoichiometric amount, temperature 150 DEG -400 DEG C., and space velocity 3000-100000 v./v./hr.  In the second zone, fuel is H2 or hydrocarbon, temperature 150 DEG -900 DEG C., and space velocity 3000-300000 v./v./hr. Pressures may be atmospheric to 150 p.s.i.g.  The gases may contain up to 22% O2, up to 2% NO, up to 2% NO2, up to 8% H2O and the balance N2, He or A, e.g. waste gas from HNO3 production.  The catalyst may be 0,01-2% of a platinum metal or 0,5-20% Fe, Co, or Ni, on granules, pellets, or powder, of alumina, silica, kieselguhr, diatomaceous earth, or silica-alumina. Specifications 849,842.  883,944, 883,946 and 918,300 are referred to.
Patent GB-1279378-A (GB)
Title: Method of manufacturing trichloroacetyl chloride
Inventor: DAHLBERG JAN ANDERS
IPC: C07C51/58
Filed: 1971-04-19
Abstract: 1279378 Trichloracetyl chloride UDDEHOLMS AB 19 April 1971 [9 July 1970] 22093/71 Heading C2C Trichloracetyl chloride is made by means of the photochemical chlorine-sensitized gas phase continuous oxidation of perchloroethylene with oxygen, a liquid coolant being continuously introduced into the reactor in drop form, which by vaporization absorbs a considerable portion of the heat liberated during the oxidation. Reaction temperatures are typically below 100 C.
Patent GB-1428989-A (GB)
Title: Fluid control valve
IPC: F16K5/02
Filed: 1973-05-22
Abstract: 1428989 Valves AVM CORP 22 May 1973 [19 June 1972] 22095/75 Divided out of 1428988 Heading F2V The description is similar to that in Specification 1,428,988 but the claims relate to the spring biasing of the valve member against the sealing member.
Patent GB-1285441-A (GB)
Title: Improvements in or relating to superconducting cables
Inventor: TAYLOR MALCOLM THOMAS
IPC: H01B12/12
Filed: 1968-05-09
Abstract: 1285441 Super-conductors; cables CENTRAL ELECTRICITY GENERATING BOARD 11 Aug 1969 [9 May 1968] 22102/68 Headings H1A and A4D A super-conductor comprises a plurality of thin continuous layers of type II super-conductor separated by layers of dielectric material or of a material which is highly resistive, the layers of super-conductor being 0À01 to 0À5 microns thick. In a first arrangement, Figs. 1, and 2 (not shown), an A.C. power cable comprises two coaxial tubes 13, 15 of Cu or Al coated on their outer and inner faces respectively with laminated layers 14, 16 of a type II super-conductor and a dielectric or resistive material. The super-conductor layers may be of Nb or a Nb alloy, e.g. Nb-Zr, and the spacing layers may be of stainless steel, A Cu- Ni alloy, a brass, silicon monoxide, or biobium oxide. The gap 12 between the tubes may be evacuated or filled with high-pressure helium, spacers are provided to support the tubes, and the cable is surrounded with a thermal insulation and cooled to a cryogenic temperature. In a second arrangement, Fig. 3 (not shown), the tubes are coated with laminated layers (22, 26) of super-conductors having different transition temperatures, on top of which are provided laminated layers (23, 27) constructed as in the first arrangement. Under fault conditions the laminated super-conductor layers (22, 26) exhibit a rate of change of critical current with temperature which is positive or less negative than that of the higher critical temperature material due to flux pinning at the interfaces. This improves the magnetic field stability under fault conditions. The operating load current is carried by the laminated layers (23, 27) which exhibit a higher critical current density than the protective layers (22, 26). The protective layers (22, 26) may be produced by alternately sputtering Nb in an atmosphere of N to produce a niobium nitride coating and in an inert atmosphere to produce a Nb coating. Load current layers (23, 27) may be produced by depositing alternately by sputtering coatings of niobium nitride and silicon monoxide. A multiple phase cable can be produced by mounting several coaxial conductor pairs in a common thermal enclosure or by forming a multiple coaxial structure in which the super-conductor layers are formed on both the insides and the outsides of some of the support tube.
Patent GB-720522-A (GB)
Title: Method and apparatus for treating paper pulp
Inventor: COWLES EDWIN
IPC: D21B1/34
Filed: 1952-09-03
Abstract: 720,522. Pulping-engines for paper-making. COWLES CO. Sept. 3, 1952, No. 22188/52. Class 96. Paper pulp, e.g. supplied to a circulating tank 28, Fig. 1, as bales, is defibrated, &c. between a stator 1, Figs. 1 and 7, which has radial ribs 5 and which is adjustably pressed by hydraulic cylinders 20 against a rotor 2 having blades 3, Figs. 6 and 7, which are also urged against the stator due to pressure of the pulp on the leading, curved surface 12, and the partial suction beneath the trailing surface 10. The leading edge 13, which may be sharpened, gathers fibres in its passages across gaps 4 between the ribs 5, and hydrates and fibrillates them by pressure against the ribs 5. Pulp from the rotor is deflected by a baffle 33, and aids in submerging floating pieces of pulp. Finished pulp may be extracted through an apertured portion of the casing.
Patent GB-1471405-A (GB)
Title: Locking devices
IPC: E05B65/12
Filed: 1973-05-10
Abstract: 1471405 Steering column lock LOWE & FLETCHER Ltd 3 May 1974 [10 May 1973] 22314/73 Heading E2A A locking device for locking the steering column of a motor vehicle comprises a body 10 e.g. for mounting on the steering column casing, a bolt member (35 Fig. 3 not shown) mounted in the body movable between a releasing position and a locking position in engagement with the steering column shaft or an element secured thereto to prevent its rotation, a key-operated lock mechanism 12 mounted in the body for controlling the bolt movement and including a key-receiving member 13 rotatable by a key relative to the body, the body 10 having a chamber 18 for a switch assembly 16 or a part thereof, a control member 19 mounted partly in the chamber to project therefrom outside the body, an interlock mechanism so that both the key of the device and the control member must be moved by an operator in order to bring about movement of the bolt member from the releasing to the locking position thereof. As described, the bolt member (35) is spring-urged to its locking position and is withdrawn therefrom by key-operated lock mechanism 12 by means of cam (15). The manually-operable control member 19 has a head 20 formed with an opening 24 through which extends a shaft 14 secured to the keyreceiving member 13 for rotation therewith. The shaft 14 carries an eccentric element 26 in opening 24. For unlocking, the key and shaft 14 are rotated anticlockwise as shown in Figs. 4, 5. Cam faces 27 and 28 formed on the member 19 and element 26 respectively then co-operate to displace the control member 19 to its first position, Fig. 5. Further rotation closes ignition switch contacts and then the starter motor contacts. To lock the steering column, the control member 19 is pushed upwardly to its second position, Fig. 4, so that clockwise rotation of the keyreceiving member may take place and to release the bolt member (35) for movement to its locking position. Unless control member 19 is pushed upwardly this rotation is prevented by engagement of surfaces 29, 30. The control member 19 is biassed by gravity to its first position and releasably held in its second position by a spring-loaded ball 31.
Patent GB-186784-A (GB)
Title: Improvements in or relating to trouser presses or the like
IPC: A47G25/72
Filed: 1921-08-23
Abstract: 186,784. Vokes, C. G. Aug. 23, 1921. Presses.-Relates to pressure-applying devices for trouser presses, or fastenings such as for the lid of a trunk, and comprises a pair of levers 19, 20 pivoted to the lower board 10 and arranged end to end in contact with the upper board 11. These levers have projections 27, 28 bearing on the upper board, and are drawn together to apply pressure by a cam-lever 22 pivoted to the lever 19 and engaging a loop 26 adjustably carried, as by a screw, on the lever 20, the loop being received in slots 23, 21 on the levers 22, 19 respectively. In modified constructions to allow of varying thicknesses of material being pressed a plurality of the slots 21, 23 may be provided, the projections 27, 28 may be adjustable in height, and alternative positions for the pivot pins of the levers 19, 20 may be provided. Further the straps 14 of the lower board may be cranked below the projections 27, 28 to prevent buckling, and the parts of the upper board may be hinged to the lower board. In a further modification, Fig. 6, wherein the pressure from a single pair of levers 19, 20 is transmitted to two points on the length of the press, the two parts 11, 12 of the upper board are carried by bifurcated bearing- members 40, 41 which take the form of springs secured to the levers 19, 20 respectively by screws or rivets 42.
Patent GB-1141538-A (GB)
Title: Columbium addition agent
IPC: C01B31/30
Filed: 1966-05-20
Abstract: 1,141,538. Niobium carbide. UNION CARBIDE CORP. 20 May, 1966 [27 May, 1965], No. 22435/66. Addition to 1,069,561. Heading C1A. [Also in Division C7] The product of the solid state reaction of calcined niobium oxide with carbon contains 70 to 87% by weight of niobium, at least 80% of which is in the form of niobium carbide, and not more than 0À17% oxygen, the balance being essentially carbon.
Patent GB-748833-A (GB)
Title: Improvements in or relating to typewriters suited for oriental languages
Inventor: DEMMEL ANTON
IPC: B41J19/32
Filed: 1953-08-14
Abstract: 748,833. Typewriters. OLYMPIA WERKE AKT.-GES., [formerly OLYMPIA WERKE WEST GES.]. Aug. 14, 1953, No. 22437/53. Class 100 (4). Letter-spacing mechanism.-A variable letterspace escapement mechanism for a typewriter comprises a rocker 41 moved each time a typebar swings to printing position, a fixed pawl 42 and a movable pawl 40 which is slidably mounted on the rocker and adapted to slide different distances according to the position of a cranked lever 46 having projecting stops 46d, 46e which engage a pin 45 on the movable pawl 40. With the lever 46 in position shown in Fig. 8, the pawl slides enough to effect a single letterspace, but if it is rocked clockwise due to a pull on a link 50, the pin 45 of the pawl 40 may slide from the notch 46e up to a stop-spring 52 to permit a double letter-space. The link 50 is pulled by an end part 51a, Fig. 1, of a lever 51 which is rocked by an actuator 20 pivoted to a shaft 19. The shaft 19 is rocked only when a double letter-space is required by an actuating bar 22 pivotally mounted in two supporting arms 21 fast on the shaft 19. A control lever 24 links the actuating bar 22 to the case-shift movement so that the edge of the bar is engaged by part 1c of the key levers 1 if a double letter space is required. Each key lever 1 is shaped, Fig. 2, according to the letter-spacing required in upper and lower case printing. To effect a single letter-spacing the lever 1 does not engage the bar 22. A space bar 57 may effect either a single letter-spacing by the pivoting of a bridge 61 which engages the rocker 41 or a double letterspacing by connecting the bridge 61 to the lever 51 by means of link 62. Carriage brakes.-When a tabulation key is depressed a push rod 53, Fig. 1, engages the movable pawl 40 at point 40c, Fig. 8, to free the carriage but also puts into operation a centrifugal brake 37 driven from a gear 35 attached to escapement wheel 34. Driving arrangements. -On. a carriage return movement the movable pawl 40 is moved out of engagement with the escapement wheel 34 by a projection on a disc 38 frictionally urged against the wheel 34.
Patent GB-1395685-A (GB)
Title: Battery electrodes for lead-acid batteries
IPC: H01M4/16
Filed: 1973-05-10
Abstract: 1395685 Lead-acid battery plates NL INDUSTRIES Inc 10 May 1973 [10 May 1972 13 Feb 1973] 22454/73 Heading H1B The positive and negative electrodes of a leadacid battery each consist of a three-ply laminate, the centre ply 11 being of conductive material and the outer plies 13, 14 comprising a homogeneous mixture of fibres and active powder comprising lead or a lead composition, 90- 100% of the fibres being of synthetic plastics material, the remainder, if any, being natural fibres. The three plies are bonded together by heat and pressure. As shown, the centre ply 11 has a terminal tab 15 and comprises a sheet of lead foil having perforations 15. Alternatively, the centre ply may comprise conductive paper containing particles of lead or graphite. Preferred synthetic fibres are of polyethylene or polypropylene. The natural fibres, if present, may be of soft wood. The active powder may be Pb, PbO, tribasic lead sulphate or tetrabasic lead sulphate. In one method of making the outer plies 13, 14 the fibres are agitated in water to form a slurry to which the active powder of lead oxide is added-preferably for each part by weight of fibres there are 50-99 parts of active powder. A flocculating agent is added and the pH of the slurry is then lowered by adding papermaker's grade alum solution to form a large flocculated mass. This mass is filtered and collected on a screw to form a composite sheet of a loose homogeneous mat of fibres coated with lead oxide powder. This mat is dried and the three-ply electrode is made by placing the mat on both sides of a perforated lead sheet and compressing the structure at a pressure of 1200 lbs/ sq. inch at a temperature of 165‹ C. for 10 minutes. A battery including seven electrodes is described with reference to Fig. 2 (not shown).
Patent GB-420704-A (GB)
Title: Improvements in or relating to fuel injection pumps for internal combustion engines
IPC: F02D1/00
Filed: 1933-08-12
Abstract: 420,704. Adjustable couplings. BOSCH AKT.-GES., R., 4, Militarstrasse, Stuttgart, Germany. Aug. 12, 1933, Nos. 22542 and 22543. Convention dates, Aug. 24, 1932 and Aug. 27, 1932. [Class 80 (ii)] [See also Group XXVIII] An adjustable coupling device for timing of fuel injection pumps comprises a hollow camshaft 3 with a concentric driving shaft 12 and an intermediate sleeve 10 which lies in the annular space between the two shafts. The sleeve is splined externally and internally to engage with both the camshaft and driving shaft, one or both sets of splines being helical. Thus axial movement of the sleeve 10 which is effected through the fork mechanism 17 advances or retards the camshaft with respect to the driving shaft. In a modification the sleeve is situated wholly within the camshaft and actuation is effected by a rod which passes through an axial bore in the end of the camshaft 3, and is attached by a nipple to the end of the sleeve.
Patent GB-1256116-A (GB)
Title: Device for the extraction of poisonous or explosive liquids or gases from a cartridge
IPC: F42B33/06
Filed: 1969-05-02
Abstract: 1,256,116. Smoke &c producing cartridges. MMM MUNCHENER MEDIZIN MECHANIK G.m.b.H. 2 May, 1969 [28 May, 1968], No. 22555/69. Heading ASG. [Also in Divisions F3 and F4] Discharge of a cylindrical cartridge 4 containing a pressurized volatile fumigant e.g. ethylene oxide is effected by loading the cartridge into a cylindrical space 5 formed in a chamber 1 and of height about half that of the cartridge 4 and having an outlet duct 7 provided with an upstanding cutter portion 8, closing the upper end 3 of the chamber by means of a screw threaded inverted cup-shaped cover 21, 16 formed with a collar 22 which is forced against a rubber sealing ring 14 and which ring is connected by a resilient sealing hollows 24 to a slidable pressure plate 17 above the upper end of the cartridge 4 and finally by applying downward force on a pin 19 projecting upwardly from the plate 17 through the cover end cap 21 thereby puncturing the base of the cartridge. The lower end of the cartridge is recessed to engage upstanding locating ring 9 in the base of chamber 1 and any discharged fluid collecting in the chamber base outside ring 9 passes through a duct 25 Fig. 2 into duct 7. The latter extends through a side portion 12 of the chamber 1 secured to the wall 13 of a room to be sterilized.
Patent GB-669519-A (GB)
Title: Production of hydrofluoric acid
IPC: C01B7/19
Filed: 1950-09-14
Abstract: Magnesium silicofluoride, obtained, for example, by the process of Specification 669,518, is dissolved or suspended in an aqueous medium, and reacted with ammonium hydroxide, and the ammonium fluoride so formed is separated and distilled with sulphuric acid to produce hydrofluoric acid.  The magnesium hydroxide and silica mixture separated from the ammonium fluoride may be used as a fertilizer material, or treated with carbonated water or mineral acid to dissolve the former.  Prior to treatment with sulphuric acid, the ammonium fluoride solution is concentrated, or the salt may be salted out by ammonia.  Alternatively, the solution may be evaporated to diquess or crystallized.  The hydrofluoric acid may be dehydrated by concentrated sulphuric acid.  The ammonia used in the process may be recovered as such or as ammonium sulphate.
Patent GB-188422-A (GB)
Title: A new or improved fire bar for boilers and other furnaces
IPC: F23H17/12
Filed: 1921-08-26
Abstract: 188,422. Burgess, C. L. Aug. 26, 1921. Fire-bars.-A fire-bar a is provided with a longitudinal groove b which may have undercut sides b<2> for the reception of fire-clay or other refractory material c. As shown, a deep layer of this material is provided covering the whole top surface of the bar, while in modifications a thin layer is provided, or the material is cut off flush with the top of the bar. Side plates may be provided in the sides of the bar for the passage of air. Reference has been directed by the Comptroller to Specification 6643/10.
Patent GB-317978-A (GB)
Title: Improvements in mechanism for feeding continuous lengths of material at high linear speed
IPC: D06B23/00
Filed: 1928-08-04
Abstract: 317,978. Lyth, J. J. Aug. 4, 1928. Piling materials in rope form. -Relates to means for controlling the delivery of material such as roped cloth, to a, piling machine. In advance of the feed roll 11 an eye 24 is suspended adjustably on its pivot 27 so as to guide the rope accurately relatively to the lengths of the roll. The roll 11 is of small diameter to be suitable for rectricted space and is driven at such high speed that. the rope would leave the roll but for an idler roll 17 which is pivotally suspended at 20 and is drawn by springs, 23 towards the roll 11. The roll 11 is driven through a friction clutch adapted to slip in emergency. Vertical adjustment of the roll 11 on the ecrewed supporting rods 14 enables the circumferential point of departure of the rope from the roll 11, and its direction, to be controlled. The rolls 11, 17 are covered with rubber 22.
Patent GB-357702-A (GB)
Title: Improvements in or relating to presses for drawing sheet metal and the like
IPC: B21D24/08
Filed: 1930-07-29
Abstract: 357,702. Cupping. RODE, F. J., 6500, West 65th Street, Chicago, U.S.A. July 29, 1930, No, 22777. [Class 83 (iv).] The draw ring -20 ofa cupping press is yieldingly supported by a pressure pad 23, which forces pistons 32 down into the tubular cylinders 29 thereby compressing the fluid (air) contained in the hollow 27 formed in the press bed. The hollow bed is supplied with pressure regulated fluid from an external pressure system. To prevent immediate return of the draw ring after the working stroke the pistons are provided with rods 57, Fig. 5 which connect with cylinders 60 moving down over fixed pistons 59 through which liquid 63 is drawn into the cylinders 60 and trapped there until released by a valve 66, Fig; 7, opened by cam and links from the same crank shaft. The liquid 63 lies in the bottom of the hollow press bed, and is available for drawing into the cylinder 60 and is then forced back into. the hollow bed.
Patent GB-154737-A (GB)
Title: Improvements in or connected with galvanic batteries
IPC: H01M50/147
Filed: 1919-09-16
Abstract: 154,737. Oldham, O., (trading as Oldham & Son), Oldham, G., and Oldham, J. Sept. 16, 1919. Cells; connexions. -In order to prevent spreading of a rubber washer e surrounding the terminal lug of a battery in which the lug can be pulled upwards by the rotation of a nut i, a celluloid or other sleeve a is provided to surround the washer c o m - pletely. The sleeve may be attached to the grease cup h or to the underside of the battery lid f, and the washer e may press against the grease cup or against the lid.
Patent GB-1207841-A (GB)
Title: A new or improved door closer
Inventor: BROWN JOHN
IPC: E05F3/10
Filed: 1967-08-05
Abstract: 1,207,841. Spring door closer with check device. J. BROWN. 5 Nov., 1968 [5 Aug., 1967], No. 22801/67. Heading E2M. In a door closer in which the seating for the spring 39 is preferably the piston 33 of the damping means, the seating is connected to the pivot pin 12 to which the operating arm 14, 15 is connected by means of a linkage consisting of a primary link 29 pivotally connected to the spring seating at 47, and pivotally connected at 28 to a connecting rod 27 coupled to the pivot pin, the connecting rod also being pivotally connected at 30 to a secondary link 31 pivoted at 32 to the housing 10.
Patent GB-809695-A (GB)
Title: Improvements in or relating to ballast tanks for ships
IPC: B63B3/14
Filed: 1956-07-24
Abstract: 809,695. Flexible ballast tanks. VECCHI, L. July 17, 1957 [July 24, 1956], No. 22814/56. Class 113. A ballast tank 7 constructed so as to be variable in volume comprises walls of flexible sheet-material and is connected at one of its surfaces to a water ballast chest 2 attached to the ship's structure. In one embodiment the tank is formed as a bellows-like hollow member provided with wheels or rollers. In Fig. 2 the tank is fitted between decks P and P<SP>1</SP>, has rollers 10, and is surrounded by a flexible or elastic netting 8.
Patent GB-1220685-A (GB)
Title: Process for the production of moulded foam products
Inventor: HICKIN KENNETH JAMES
IPC: B29C44/10
Filed: 1967-05-17
Abstract: 1,220,685. Preventing mould distortion. DUNLOP CO. Ltd. 15 May, 1968 [17 May, 1967], No. 22909/67. Heading B5A. [Also in Division C3] In a process for produced moulded foam products the distortion of the mould due to the application of super-atmospheric or sub-atmospheric pressure to the interior of the mould is compensated by the application to the outside of a major face of the mould, e.g. the lid, of super-atmospheric or sub-atmospheric fluid pressure respectively. To obtain a rubber latex moulding the foamed or foamable composition is fed to a mould and foamed if necessary. The foam is expanded with the aid of sub-atmospheric pressure in the mould, set by freezing, gelled by introducing carbon dioxide gas and vulcanized, the vulcanization at least being carried out under super-atmospheric pressure, the bowing of the mould wall during the steps in which sub- or super-atmospheric pressure is applied to the interior of the mould being compensated for by application of sub- or superatmospheric fluid pressure to the outside. The mould wall has a pressure compensating chamber on its outer surface.