baber/WOPTO huggingface dataset:
Patent GB-588496-A (GB)
Title: Improvements in or relating to gas analyzers
IPC: G01N27/74
Filed: 1945-02-23
Abstract: 588,496. Magnetic tests and measurements. BAILEY METERS & CONTROLS, Ltd. Feb. 23, 1945, No. 4566. Convention date, Feb. 24, 1944. [Class 37] [Also in Group XXXV] The percentage in a gaseous mixture of a gas having a permeability different from that of the other constituents is determined by introducing the mixture in a gap in a magnetic circuit, varying the reluctance of the gap by periodically inserting and withdrawing a body of substantially unity permeability, and utilising the resulting flux variations to generate a potential which is a function of the permeability of the gaseous mixture. The gaseous mixture to be examined, for example flue gas the percentage of oxygen in which is to be determined, is passed through a closed chamber formed by an axially magnetised Alnico ring 1, Fig. 2, closed at its ends by soft iron plates 2. Each plate 2 has mounted thereon eight coil windings 4 supported by soft iron cores 5 equiangularly spaced about a rotary spindle 20. Pole pieces on opposite plates are aligned and spaced apart about one-eighth of an inch. In the airgap between the pole pieces is a rotatable disc 6 of non-magnetic insulating material such as quartz, glass, or a plastic secured to the spindle 20 and having eight equally spaced radial fingers 7. The spindle 2 is rotated at high speed by a motor 8, Fig. 4, so that the fingers 7 are alternately interposed between the pairs of aligned pole pieces and removed from the air gaps. The disc may alternatively be provided with holes so arranged that alternately pairs of aligned pole pieces are separated by material of the disc and the spaces between the pole pieces are wholly filled with the gas. The permeance of the gaps thus varies by an amount depending on the difference between the permeability of the gas and of the material of the disc. The flux is thus periodically varied and an alternating voltage is induced in the coil windings and is applied to an amplifier 22, the output of which is passed by way of a band filter 23 and power amplifier 24 to current indicating and recording instruments 25, 26 in series with an inductance 27 for rendering the output insensitive to fluctuations in speed. The filter 23 eliminates frequencies produced by vibration. In order to compensate for the permeability of the disc not being exactly unity a compensating, voltage of opposite polarity may be introduced into the output of the amplifier in order to cancel the amplifier output when no oxygen is present. Alternatively a compensating generator operating in a vacuum or inert gas such as nitrogen may be driven by the motor 8. According to another method the disc is made of a section of paramagnetic material bonded with a section of diamagnetic material, for example a celluloid disc may have a lacquered coating of ferric oxide. Static charges induced on the disc may be removed by a brush bearing on a very thin coating of colloidal graphite on the disc, or the disc may be made of a semi-conducting material.
Patent GB-470378-A (GB)
Title: Improvements in or relating to rubber sheet material and articles made therefrom
IPC: C08C1/00
Filed: 1937-02-16
Abstract: 470,378. Rubber sheets. INTERNATIONAL LATEX PROCESSES, Ltd. Feb. 16, 1937, No. 4610. Convention date, March 3, 1936. [Class 70] [Also in Group VIII] Laminated rubber sheets comprise two or more layers of rubber each containing per forations therein, at least one face of the sheet presenting such an appearance that per forations and materia surrounding the perfor ations in a lower layer are visible through the larger perforations ir the upper layer. Adja cent layers may be of different colours. Figs 1 and 3 show opposite faces of a sheet according to the invention ; this sheet comprises one layer 10 having coarse perforations 12 and another layer 13 having fewer and smaller perforations 14. The individual layers may be made as described in Specification 451,012. The laminated rubber sheets may be used for example for making bathing suits, corsets, girdles, and covers for cushions or outdoor furniture.
Patent GB-1323855-A (GB)
Title: Inermediate plate for assembly between engine and gearbox in  motor vehicles
IPC: F16H57/025
Filed: 1972-02-01
Abstract: 1323855 Attaching clutches to engines FORD MOTOR CO Ltd 1 Feb 1972 [5 Feb 1971] 4621/72 Headings F1B and F1K An intermediate plate 1 for assembly between engine and clutch housing in motor vehicles, the plate when oriented for use having an upper semiannular area 2, a lower area 3 for sealing off the clutch space and a centering hole 4 for a starter motor, the semi-annular area 2 having an oblique slit 8 to facilitate assembly of the plate between engine and clutch housing when a flywheel is already mounted on the engine.
Patent GB-1504141-A (GB)
Title: Synthetic ceramic materials and methods of making them
IPC: C04B35/584
Filed: 1974-01-31
Abstract: 1504141 Oxynitride ceramic materials; silica ADVANCED MATERIALS ENG Ltd 30 Jan 1975 [31 Jan 1974] 04646/74 Headings C1J and C1A A synthetic ceramic material is made by mixing a first compound comprising Si and O, and a second compound comprising N and a metal other than silicon, and heating the mixture to 1500‹ to 2000‹ C. in a a non-oxidizing atmosphere to produce a solid solution ceramic containing Si, the metal, O and N. The metal is preferably Al, part or all of which may be replaced by Y, Mg or Li. The first compound may be silica in gelled sol form, or may be polymethyl siloxane, polymethylphenyl siloxane, or ethyl silicate gel, which may be subjected to preliminary heating to be converted to SiO 2 . The second compound may be A1N. In a preferred embodiment polymethylphenyl siloxane, A1N, Si 3 N 4  and optionally MgO are used. The A1N may be formed by heating a powder mixture of Al (26À92%), Al 2 O 3  (43À02%) and Si 3 N 4  30À06% in a nitrogen atmosphere at less than 1500‹ C., the Al 2 O 3  and Si 3 N 4  decreasing coalescence of the Al powder to present a large surface area of Al for nitriding. Reference has been directed by the Comptroller to Specification 1,436,311.
Patent GB-490535-A (GB)
Title: Improvements in or relating to pistons
IPC: F02F3/02
Filed: 1937-02-16
Abstract: 490,535. Pistons. FREER, P. M. Feb. 16, 1937, No. 4674. Convention date, March 23, 1936. [Class 122 (i)] In a piston comprising a body portion 1 having spaced bearings 14 registering with spaced bearings 12 in a skirt portion 2, said bearings accommodating connecting members 15, the latter are tubular and slit to form portions of independent radial expansion engaging the bearings 12, 14 respectively. The expansible portions may be bounded by slits 16, 17, 18 or by peripheral slits extending from a transverse slit. The connecting members may be of elliptical form and may engage the inside or outside of bearings 12. The piston body may be of light metal and the skirt of tin-plated sheet steel.
Patent GB-838232-A (GB)
Title: Improvements in or relating to metal strip and angle for constructional purposes
IPC: A47B96/14
Filed: 1957-02-12
Abstract: 838,232. Structural members. MARTIN, A. E. Sept. 19, 1957 [Feb. 12, 1957], No. 4680/57. Class 20(2) Metal strip or angle comprises a pattern of markings at regular intervals along its length to indicate where it should be perforated for bolts to connect the strips together to form structures. The markings may be indentations to locate the punching tool for perforating the strip or lines at right angles, squares or circles impressed, printed or stencilled &c. the line intersections or centres of circles indicating the positions for the punch.
Patent GB-825287-A (GB)
Title: Improvements in polyesters
IPC: C08G18/28
Filed: 1956-02-15
Abstract: Polyester or polyesteramide resins are made uniformly reactive with polyisocyanates by treating the resins with an organic cation-exchange agent.  Treatment may be effected by stirring the resin with the cation-exchanger, by passing the resin through a fixed bed of the cation-exchanger or by using a fluidized bed of the cation-exchanger.  The resin may be treated whilst in molten or solution form.  The resins preferably have terminal hydroxyl, carboxyl or amino groups and molecular weights of 500-5000.  The polyesters are preferably derived from an aliphatic dicarboxylic acid and a glycol if desired together with an aromatic dicarboxylic acid or polyhydric alcohol.  The polyester amides are made by using a diamine or an amino alcohol as an additional reactant.  The treated resins may be reacted with an aliphatic or aromatic diisocyanate, if desired together with a triol.  In examples poly (ethylene adipate) or poly (tetramethylene suberate) are treated with a cation-exchange resin and then reacted with p-phenylene diisocyanate.
Patent GB-1165782-A (GB)
Title: Contact Printing on a Moving Light-Sensitive Element
Inventor: BEISPEL ROBERT
IPC: G03B27/02
Filed: 1967-01-31
Abstract: 1,165,782. Contact printing. EXTEK MICROSYSTEMS Inc. Jan. 31, 1967. No. 4766/67. Heading G2A. In contact-printing between an original sheet 10 and a copy sheet 12, the sheets are maintained in close contact by vacuum means while they are passed continuously through the.printing zone 14. This zone comprises a vacuum box 22, exhausted through a conduit 35. Within box 22 is a further box 23 communicating with the atmosphere via tubes 24. Box 23, which has a perforated top 30, is urged upwards by spring- loaded pistons 27 to establish contact with flanged brackets 33 secured to box 32. Sheets 10 and 12 slide over the perforated top of box 23, their edges being pressed between box 23 and a gasket 34. Their edges, and hence the space between them, are subject to the vacuum in box 22, while the sheets are also subject to atmospheric pressure, directly from above, and via box 23 from below. Light from source 40 falls on the sheets through a semi-transparent sheet 42, which transmits only light rays incident thereon at about 48 degrees, or less, to the normal, the remainder being reflected. The original may be in the form of separate sheets, fed out of a magazine Fig. 6, (not shown), and the copy material may also be in the form of separate sheets Fig. 8, (not shown). Fig. 11 is a modified form of vacuum box, the sheets 10, 12 being pressed by a spring 94 against a perforated plate 92 exhausted from below through a conduit 95. The sheets 10, 12 may be guided to pass in a helical path round an axially disposed light source Fig. 9, (not shown). An arrangement of vacuum wedges may be provided for guiding the sheets together before exposure and separating them afterwards.
Patent GB-549240-A (GB)
Title: Pulverulent cleansing preparations
IPC: C11D9/30
Filed: 1941-05-10
Abstract: 549,240. Saponaceous cleansing powders. BAIRD, W., HILL, A., HARRIS, J. E. G., OAKESHOTT, S. H., WILSON, W. J., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. May 10, 1941, Nos. 4839/41 and 2941/42. [Class 91] Cleansing powders comprising mixtures of soaps, alkali salts such as sodium carbonate, sodium bicarbonate, borax, sodium silicate, or trisodium phosphate, together with salts of hydrogen peroxide-yielding per-acids such as sodium perborate or percarbonate, are stabilized by the addition thereto of a small proportion of a compound of the general formula R-CH=N-CHX-CHX-N=CH-R, where " R " is an o-hydroxyaryl residue substituted or not, and " X " is H or an alkyl group. The additives specified comprise bis-(o-hydroxybenzal) ethylene diamine, bis-(2-hydroxy-5- methyl-benzal) ethylene diamine, bis-(2- hydroxy-3-methoxybenzal) ethylene diamine, bis-(2-hydroxy-1-naphthal) ethylene diamine, or bis-(o-hydroxybenzal)-1:2-propylene diamine. These compounds may be prepared by the condensation of the required aldehyde and diamine ; thus two molecular proportions of 2-hydroxy-5-methylbenzaldehyde with one of ethylene diamine gives the bis-(2- hydroxy-5-methylbenzal) derivative specified. The quantity of additive ranges from 0.001 to 0.1 per cent of the weight of the cleansing powder and 0.01 per cent is preferred. The additive may be used with a diluent such as sodium sulphate, or in conjunction with another compound also having a stabilising action such as diphenylguanidine. Examples of the compositions of stabilized cleansing powders are given.
Patent GB-724684-A (GB)
Title: Improvements in or relating to mechanisms for varying the area of a jet propulsion nozzle of a jet propulsion engine
IPC: F02K1/11
Filed: 1953-02-23
Abstract: 724,684. Jet-propulsion plant. GENERAL MOTORS CORPORATION. Feb. 23, 1953 [Feb. 23, 1952], No. 4979/53. Class 110 (3). A mechanism for varying the outlet orifice of a jet propulsion unit comprises visor members 28 pivotable on the jet pipe about an axis transverse thereto by a motor mounted on said jet pipe and acting through a thrust member carried by a guide member supported between the pivot point of a visor member and said motor. The visors 28 have curved brackets 30 welded thereto and are actuated by two operating mechanisms each of which comprises a pneumatic motor 34 having a piston rod 36 connected to a crosshead 37 by a rod 102 as shown. A pair of links 38 are pivotally connected between the crosshead and the visors. Each crosshead is mounted on a torque rod 74 which is of non-circular cross-section except at the end welded to a guide 35 carried by the motor 34, the other end of the crosshead being bolted to a plug 91 pivoted in a bracket 46. The members 30 have ears 59 pivoted in plates 50 which are welded to the brackets 46 and to the jet pipe 18. The jet pipe has shrouds 22, 24, cooling air being circulated between the members 18, 24. The shroud 24 is bolted to the two brackets 46 and is connected to the jet pipe by links 42 which are secured to eye brackets 44 welded to the members 18, 24 respectively and permit relative expansion therebetween. Each motor is mounted on a heat shield 84 which is supported from the jet pipe by brackets, the arrangement being such as to permit relative expansion therebetween.
Patent GB-727621-A (GB)
Title: Improvements in apparatus for cleaning pipes and tubes
IPC: B08B9/057
Filed: 1953-02-24
Abstract: 727,621. Cleaning pipes. WALTON, S. R. Feb. 23, 1954 [Feb. 24, 1953], No. 5079/53. Addition to 675,513. Class 99 (2). In the apparatus described in the parent Specification wherein a shank 11 carrying a brush 12 is coupled to forward and rearward support members 8, 17 having collars 6, 19, e.g. of rubber, to receive fluid pressure for propelling the device through a pipe, a pilot member 3 is disposed forward of the member 8 and coupled to'that member by a spring 9. There may be two brushes 12, 15 mounted on rigid shanks 11, 14 connected together and to members 8, 17 by springs 10, 13 and 16. The member 3 may be screwed at 3a to receive a tube 4 carrying a rigid collar 5 clamping the collar 6 against the member, the tube being closed by a boss 7 provided with bores 7a by which fluid passes to forwardly and outwardly extending bores 3b in the member. The member 8 is similar to member 3 but has a greater number of bores 8b. In the member 17 the collar 19 is clamped against the member by a flange 18a of a tube 18 screwed into the member, and the bores 17b are greater in diameter than the bores 8b. When the member 3 passes a "T" junction in a pipe and the collar 6 no longer provides a seal in the pipe a thrust is developed on the collar of the member 8 to continue the forward progress of the device ; when the member 3 has passed the junction the thrust on the collar 6 is again developed to continue the motion of the device.
Patent GB-307607-A (GB)
Title: Improvements in machines for emulsifying bitumen, other materials and the like
IPC: B01F5/06
Filed: 1928-02-18
Abstract: 307,607. Warsop, H. E., and Gough, F. W. Feb. 18, 1928. Emulsions, making.-An emulsifying or mixing machine for bitumen or the like comprises a, casing a having partitions b secured thereto by bolts t<2> and dividing the casing into the chambers s, g. The chambers s contain concave discs c formed with radial ribs and the chamber g a wheel i having radial spokes and a rim formed with radial holes u. The members c, i are fixed to and rotate with a shaft d driven by a pulley v and supported in bearings x on the bed plate q of the apparatus and in glands e in the casing a. In use the materials to be treated are delivered to a hopper t whence they flow, through passages k and apertures k<2> in the discs c, into the spaces s. Under the action of the discs c the materials are thoroughly mixed and forced from the spaces s, through holes h in the inner partitions b, into the space g where they are further mixed or emulsified and delivered by centrifugal force through a conduit m. The casing a may be provided with a water or steam jacket if desired and more than one member such as i may be provided in the chamber g.
Patent GB-525278-A (GB)
Title: Improvements in priming means for self-priming pumps
IPC: F04D9/02
Filed: 1939-02-16
Abstract: 525,278. Centrifugal pumps. STRATTON, A. C. Feb. 16, 1939, No. 5182. [Class 110 (i)] The inlet 11 of a self-priming pump is guarded by a non-return valve 13 and the volute 18 discharges into a chamber 21. The volute wall is cut by a slot 22 which is in line with the clearance 23 at the side of the impeller 15. When the impeller is full of water, water is discharged in the ordinary way through the volute. When air enters in the impeller, the delivery pressure of the impeller falls and water returns from the chamber 21 through the slot 22. This water is broken by the impeller into a spray which entrains air and is re-discharged through the volute. Portions of the impeller blades may lie close to the wall 25 so as to increase the fineness of the spray. The slot may be replaced by ports.
Patent GB-633311-A (GB)
Title: Improvements in or relating to high-frequency electric furnaces
IPC: H03B5/10
Filed: 1948-02-23
Abstract: 633,311. Induction heating. PHILIPS ELECTRICAL, Ltd. Feb. 23, 1948, No. 5306. Convention date, Feb. 26, 1947. [Class 39 (iii)] In order to stabilize the frequency and avoid parasitic oscillations in a valve oscillator circuit employed in H.F. induction heating apparatus, the frequency determining coil 3 is provided with an auxiliary coil 9 to step up the impedance of the anode circuit in known manner. The frequency determining coil 3 is divided longitudinally by a metallic screen 11, as shown in Fig. 2, so as to substantially de-couple magnetically, the reaction coil 4 and the auxiliary coil 9 which are placed on opposite sides of the screen 11 as shown in Fig. 2.
Patent GB-1418744-A (GB)
Title: Reaction vessel for treatment of industrial waste water
IPC: C25D21/18
Filed: 1973-02-02
Abstract: 1418744 Apparatus for treating industrial waste water ELKEM-SPIGERVERKET AS 2 Feb 1973 [4 Feb 1972] 5392/75 Divided out of 1418743 Heading C1C As shown in the Figure, a reaction vessel for treating industrial waste water comprises inner (2) and outer chambers (1), inlet means (3) for waste water communicating with the inner chamber, outlet means (5) for treated waste water communicating with the outer chamber, the inner and outer chambers being devoid of communication one with the other but being separated by a common wall over which waste water may flow from the inner to outer chamber without recirculation, and agitator means (4) for mechanically agitating the inner chamber contents to promote flocculation. The inner and outer chambers are of circular cross-section and concentric. In the example waste water containing cyanides is treated with NaOH and NaOCl to form cyanates and then passed to a sedimentation tank.
Patent GB-332256-A (GB)
Title: Improvements in or relating to the manufacture of films, foils or the like
IPC: B32B27/00
Filed: 1929-02-18
Abstract: 332,256. Frenkel, G. Feb. 18, 1929. Bronze.-A foil or film made in long lengths or bands comprises one or more layers of metal interleaved or sandwiched between layers of dielectric material such as a cellulose derivative, in particular of cellulose acetate. The accumulation of static electricity on the foil is avoided owing to the proximity of the metal to the surface. The metal layer may be applied to a layer of cellulose derivative by spraying a suspension of metal powder in a solvent for the non-metallic layer, or the surface may be made conducting by applying graphite or bronze powder and the metal layer then deposited electrolytically, or the metal may be deposited by vacuum condensation. The metal layer in then covered by flowing thereon another laver of a cellulose derivative. The films are suitable for making cigarette tips and for wrapping articles such as food products and soap. Specifications 332,254 and 332,255 [both in Class 2 (ii), Cellulose &c.], are referred to,
Patent GB-752466-A (GB)
Title: Improvements in the treatment of yarns of cellulose acetate synthetic fibres
IPC: D06C5/00
Filed: 1954-02-25
Abstract: 752,466. Treating yarns. ADSHEAD & GEESON, Ltd., and GEESON, T. Nov. 30, 1954 [Feb. 25, 1954], No. 5518/54. Addition to 683,075. Class 120 (3). Yarns made from staple fibre or continuous filament of cellulose acetate, or mixtures thereof with other synthetic or natural fibres, is stabilized and set by passing it continuously or intermittently through steam, which may be superheated, then through hot dry air to remove moisture therefrom, and then over and in contact with a surface heated to a temperature of 285‹ F. or higher, but below the plasticising point of cellulose acetate, whereby the yarn shrinks a predetermined amount and is stabilized in such condition. The treatment may be effected on apparatus as described in the parent Specification modified as described in Specification 692,637. Specification 722,461, [Group VIII], also is referred to.
Patent GB-330273-A (GB)
Title: Improved method of and apparatus for producing nitric oxide
IPC: C01B21/30
Filed: 1918-04-02
Abstract: 330,273. Humphrey, H. A. April 2, 1918. Actuating pumps by fluid-pressure motors.- Ignition of an explosive gaseous mixture containing nitrogen and oxygen, takes place in a space confined by a partition or member freely movable by the expansion of the gases. The process may be carried out in an apparatus of the nature of a Humphrey pump consisting of a piston of differential diameters a, g, c freely movable in a cylinder with corresponding differential diameters b, h, d. The explosion of a charge in the cylinder b drives the piston to the right. The exhaust gases escape through a port m and a heat-exchanger k, l to absorption apparatus and are followed by scavenging air admitted through a valve n. The movement of the piston compresses air in the cylinder d and delivers it through a non-return valve v and the heatexchanger k, l, to a storage vessel. When the port w is covered, the remaining air is compressed in the closed space until the piston is brought to rest. The energy in the compressed air starts the return movement of the piston. The annular chamber e receives a rich fuel mixture through a valve t and compresses it through a valve s into the cylinder b. The annular chamber f acts as an air pump, and supplies compressed and preheated air to the cylinder b. The piston may be hollow and cooled by circulating the scavenging air through it. A mixture of air and oxygen is preferably supplied to the cylinder b. Specifications 11818/11, [Class 102 (i), Pumps &c.], and 28187/11 are referred to.
Patent GB-250190-A (GB)
Title: An improved roller skate
IPC: A63C17/06
Filed: 1926-03-01
Abstract: 250,190. Kustner, A., and Recordon, E. April 3, 1925, [Convention date]. Skates.-In a skate having two rollers, the rear roller g is smaller than the front roller f and is carried by a fork i mounted on a pivot k on the sole-plate a. Means may be provided to retain the fork in normal position when the skate is travelling in a straight line; thus a spring- pressed plunger q engages a notch formed by two inclined surfaces o, p on the fork, and screws z may be provided to limit the movement of the fork or lock it in normal position. The rollers and the pivot may be provided with ball bearings, the rollers may have concave peripheries, and the length of the skate may be adjustable.