baber/WOPTO huggingface dataset:
Patent GB-1396851-A (GB)
Title: Oxygen sensor with protective shield
IPC: F02B77/08
Filed: 1973-06-28
Abstract: 1396851 Oxygen sensor BENDIX CORP 28 June 1973 [28 Aug 1972] 30739/73 Heading G1N An oxygen concentration sensor comprises a zirconium oxide solid electrolyte 24 having a first surface which contacts the gas to be tested coated with a porous, catalytic, metallic conductor 44, a second surface which contacts a reference source of oxygen 42 coated with a porous electrically conductive material 50 and a shielding device 20 acting both as a thermal barrier between catalyst and gas and to control the gas flow over the catalyst. The device is preferably used for determining oxygen in an exhaust pipe 12, the catalyst being platinum and the conductor 50 either platinum or silver. The sensor is mounted by screw thread 30 in a mounting member 14 welded into the exhaust pipe 12. Collars 46 and 26 hold the electrolyte in place and provide electrical connection between the catalyst layer 44 and the mounting member 14 which is earthed. Conducting member 38, insulated from member 28 by ceramic 32 has spring fingers 52' which contact conductive layer 50. Passage 41 in member 38 exposes layer 50 to atmospheric air (21% O 2 ) or oxygen. The shielding device 20 has a plurality of inlet holes 52 which are tangential to the catalyst layer 44 and on outlet hole 54. The inlet holes have a greatest concentration adjacent a heat sink so that the temperature gradients in the zirconium dioxide are minimized. The tangential entry prevents damage or poisoning to the catalyst layer, which serves to complete combustion of the exhaust gases.
Patent GB-1041268-A (GB)
Title: Improvements in or relating to rectifier circuits
Inventor: LYALL JAMES BORLAND
IPC: H02M1/14
Filed: 1963-08-02
Abstract: 1,041,268. Smoothing D.C. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. April 29, 1964 [Aug. 2, 1963], No. 30775/63. Heading H2F. A rectifying circuit 1 is followed by a filter 7 with a choke input 9 and the choke is shunted by a non-linear resistor 11 which has a higher conductivity at higher voltages than at the normal working voltage across the choke. The non-linear resistor may be a back-to-back pair of normal or Zener diodes. Transient voltages, such as those due to switching, are damped and the rectifier is thereby protected.
Patent GB-1248995-A (GB)
Title: Improvements in or relating to waste and refuse disintegrating mills
IPC: D02J1/22
Filed: 1969-06-18
Abstract: 1,248,995. Hammer mills. ABJORN ANDERSON AB. 18 June, 1969 [27 June, 1968; 18 April, 1968], No. 30819/69. Heading B2A. A hammer mill for refuse destruction comprises a rotor 2 having swing hammers 3 which penetrate between teeth 8 and a tilting door 20 through which non-disintegratable tramp material is discharged by the force of the hammers. The teeth are reversible and are fitted in a box 34 under a discharge chute 24 for the tramp material, whose inclined surface is formed by the top wall 23 of the box. Between the openings for the teeth are wearing elements 36 secured by a pin 39. A perforate screen 9 (or alternatively a system of rods) is arranged below the rotor. Partly comminuted material is led out of the mill via an exit. opening (14) Fig. 1 (not shown), and finely comminuted material leaves via the screen 9.
Patent GB-386074-A (GB)
Title: Improvements in or relating to domestic washing boilers
IPC: D06F1/08
Filed: 1931-11-07
Abstract: 386,074. Washing-boilers. TURNER, E., 40, Westbourne Road, Urmston, near Manchester. Nov. 7, 1931, No. 30907. [Class 64 (i).] A washing-boiler a of triangular or segmental shape in plan has a vertical shaft c in one corner joined to a deflecting plate d sloping down to the opposite edge of the boiler leaving a space for water to pass under it and up the shaft c, which is sealed at the top to dampen pulsations and has a slot i through which water returns to the boiler. A flue f may pass through the shaft, which may be telescopic. To vary the height of the outlet slot i, it may be formed in a plate k sliding on the shaft c. Similar shafts may be arranged in other corners of the boiler, the deflecting plate d rising towards each shaft. The boiler is heated by gas, oil, or electricity, or may have a handle and be placed on a fire. A truncated cone m with a slotted lower edge is placed below the plate d, which with a wall b of the shaft c may be detachable.
Patent GB-468883-A (GB)
Title: Improvements in furnaces for drying sand and the like
IPC: F26B17/16
Filed: 1936-11-12
Abstract: 468,883. Drying sand &c. BREITENFELD & SCHOLZ EISENGIESSEREI UND MASCHINENFABRIK GES. Nov. 12, 1936, Nos. 30946 and 30947. Convention dates, Dec. 12, 1935 and May 18, 1936. [Class 34 (ii)] Sand or the like is dried in a container f, provided with sieves i which are spaced from the cover b of a firebox and the cover is provided with ribs k projecting into the sand to assist in the transmission of heat. The ribs have ledges k<1> to support the edges of the sieves and have also nose-pieces k<3> to support the container f. Roof-shaped troughs g, h are provided to carry away vapour. A ring m round the container f is adapted to be vibrated to assist in the flow of dry sand through the sieves i. The vibration is produced by compressed air supplied to vibrators through piping under the control of a valve q which is opened automatically by a revolving cam r. In a modification the container f and sieves are supported independently of the ribs k, and the sieves are detachable.
Patent GB-670832-A (GB)
Title: Improvements in and relating to typographical line-composing machines
IPC: B41B11/18
Filed: 1949-12-02
Abstract: 670,832. Endless conveyers. INTERTYPE, Ltd. Dec. 2, 1949. [Dec. 3, 1948] No. 30966/49. Class 78 (i). [Also in Groups XVI and XX] In a typographical composing machine having a line-composing station and conveyer mechanism, including a travelling belt presenting a taut surface for supporting externally thereon a succession of elements having photographable characters disposed centrally of a surface thereof, which elements lie recumbent and static against said taut surface as said belt conveys said elements towards said station, and deflecting means disposed in the path of said elements towards the end of their travel on said belt and adapted to rock said elements towards an upright position as they leave said belt, a driving pulley for said belt is disposed in advance of said station, which pulley has a concave periphery shaped to distort the belt locally tu an externally concave form at the point where the elements are rocked by the deflecting means whereby only the marginal edges of the belt support the elements as they are rocked by the deflecting means so as to prevent the belt from rubbing against the characters on the elements. In a preferred form for transporting elements of the kind described in Specifications 496,927 and 603,271, the belt 20 is caused to assume said externally concave form by a roller 21, Fig. 6, having a concave periphery and in addition a belt supporting plate 16 whose end adjacent roller 21 is bent to a concave section, Fig. 4. The edges of plate 16 are turned up at 25 to prevent lateral movement of the belt. The character C on each element 10 is thus protected from the belt when the former is arrested by the usual pivoted plate 17, which co-operates with a scraper 18 to deflect the element on to the feed wheel 19 of the line-composing station. The Specification, as open to inspection under Sect. 91, also describes another form of construction wherein a flat roller 29, Fig. 7 (Cancelled), replaces the roller 21 and a belt 31 having thickened edges 32 to support the elements replaces the belt 20. This subject matter does not appear in the Specification as accepted,
Patent GB-936041-A (GB)
Title: Amino compounds
IPC: C07C209/68
Filed: 1960-09-08
Abstract: The invention comprises 2-ethyl-3,3-diphenyl-prop-(2)-enyl-amines of the formula (C6,H5)2:C:C(C2H5),CH2NHR, wherein R is hydrogen or an alkyl or cycloalkyl (e.g. cyclohexyl) group and acid addition salts thereof; and the preparation of these compounds by reacting a 2-ethyl-3-hydroxy-3,3-diphenyl-propylamine (obtainable by hydrogenating 2-ethyl-3-hydroxy-3,3-diphenyl-propionitrile and if desired alkylating or cycloalkylating) with a dehydrating agent such as gaseous hydrogen chloride.  The alkylation or cycloalkylation is suitably effected by reacting the 2-ethyl-3-hydroxy-3,3-diphenyl-propylamine with a carbonyl compound such as cyclohexanone with simultaneous or subsequent reduction, e.g. hydrogenation, of the intermediate 1,3-oxazine compound which may be formed.  Pharmaceutical preparations for raising the blood pressure and stimulating the heart, comprise the above compounds, suitably in the form of their salts such as the hydrohalides, sulphates, phosphates, citrates, lactates, maleates, acetates, benzoates and oxalates, together with a pharmaceutical carrier.  The preparations are suitably administered by injection in a liquid carrier such as sterile water, saline or oil, topically as a spray or ointment in water, saline, oils or water soluble bases, or orally as tablets.
Patent GB-1437983-A (GB)
Title: Printing apparatus
IPC: B41J9/32
Filed: 1973-06-29
Abstract: 1437983 Selective printing TELETYPE CORP 29 June 1973 [3 July 1972] 31063/73 Heading B6F The disclosure of this Specification and Specification 1,437,984 are identical, the claims of this Specification being directed to the print hammer having a slot enclosing a resilient bumper to define its limits of movement.
Patent GB-1317743-A (GB)
Title: Electrodeposition of resin coatings on electrophotographic sheet  material
IPC: B05D1/04
Filed: 1970-06-26
Abstract: 1317743 Electro-phoretically coating with transparent resin FUJI PHOTO FILM CO Ltd 26 June 1970 [27 June 1969] 31146/70 Heading C7B [Also in Division H1] A method of forming a transparent, colourless resin coating on the surface of an electro-photographic sheet material (the sheet material having a layer of a photo-conductive material which may bear an image formed electro-photographically from toner powder) comprises immersing the sheet in a suspension of particles of a colourless transparent resin in an electrically insulating liquid, applying an electric potential to the liquid whereby to cause the resin particles to form a coating on the photo-conductive surface of the sheet, removing the coated sheet from the liquid, and either subjecting the coating to heat so as to fuse the particles in the coating and thereafter cooling the sheet, or subjecting the coating to the action of a vaporized solvent for the resin so as to soften and fuse the particles in the coating and thereafter removing the solvent. The resin deposited may be polyvinyl acetate, a polyalkyl methacrylate, a copolymer of an acrylate and vinyl acetate, a copolymer of vinyl chloride and vinyl acetate or a cellulose derivative. The insulating liquid may be cyclohexane. The liquid may contain a resin capable of controlling the charge of the resin to be deposited. The charge control resin may be an alkyd epoxy ester, polybutyl methacrylate, a rosin-modified phenol-formaldehyde resin or an xylene-formaldehyde resin. The electro-photographic sheet material may be attached to or constitute an electrode and may comprise a paper, metal or metallized paper support bearing a layer of plastics material and a photo-conductive material such as zinc oxide.
Patent GB-950745-A (GB)
Title: A control system for hospital theatre operating lamps
IPC: F21V21/30
Filed: 1960-09-09
Abstract: 950,745. Automatic position control. QUARZLAMPEN G. m. b. H. Sept 9, 1960 [Sept. 12, 1959], No. 31157/60. Heading G3R. [Also in Division H4] The beam of light from a lamp in an operating theatre is automatically directed by means of a photo-electric control system at a portable auxiliary light source which is placed by the surgeon at the point which he wishes to be illuminated by the lamp. As shown the lamp 1 is mounted in a fork in which it may be rotated in either sense about an axis AA (perpendicular to the optical axis of the lamp) by a motor 4, the fork being capable of rotation in either sense about an axis BB (perpendicular to the other two axes) by a motor 5. The motors 4 and 5 are controlled by pairs of photo-cells 6, 7, and 8, 9, respectively signals from each of the two cells in each pair causing rotation in opposite senses of the appropriate motor, the lines of sight of the cells being symmetrical in the field of illumination of the lamp so that its optical axis is directed at the auxiliary light source. Either or both of two methods may be used to guard against reflected light from the lamp affecting the photo-cells. The first is to use radiation from the auxiliary source which is outside the spectrum of light from the lamp, e.g. ultraviolet. The second is to modulate the radiation from the auxiliary source at a frequency of the order of ten times that at which the light from the lamp is modulated by its A. C. mains supply and to apply the photo-cell signals to the motors through high pass filters.
Patent GB-333801-A (GB)
Title: Device for sharpening scythes and the like
IPC: A01D3/04
Filed: 1929-10-16
Abstract: 333,801. Krosbacher, F., (trading as Krosbacher's Erbe, A.). Oct. 19, 1928, [Convention date]. Scythes &c. are sharpened by rolling between curved surfaces 5, 6, the extensions of which comprise an involute tooth 7 and corresponding recess in the other jaw. The levers are rocked in bearing blocks 1, 2.
Patent GB-775536-A (GB)
Title: Improvements in treatment of rubber latex
IPC: C08C1/04
Filed: 1955-11-03
Abstract: 775,536. Deammoniating latex. UNITED STATES RUBBER CO. Nov. 3,1955 [Nov. 17, 1954], No. 31420/55. Class 70. Ammonia is removed from ammoniated latex by treatment with a stream of air, nitrogen, hydrogen or other ammonia free gas, which is. passed in countercurrent flow to a stream of latex. The treatment may be effected in a tower 15 containing packing rings over which the latex flows in thin films. The latex is supplied to the tower 15 from a tank 10 through a supply pipe containing a control valve 12 and a metering pump 13, and the deammoniated latex is received in a storage vessel 17. The ammonia free gas is circulated in a closed system including a scrubbing tower 21, pipe 30, blower 31 having a by-pass 32 containing a control valve 33, flow-meter 34, pipe 35, scrubbing tower 15, and pipe 20. The ammonia contained in the latex entering the tower 15 passes into the stream of gas and is removed from the latter in the scrubbing tower 21 into which a scrubbing liquid, e.g. water which may be acidulated, is introduced through a pipe 22 and a heat exchanger 23 for controlling the temperature of the liquid to any desired value between 0‹C. and 80‹C. The scrubbing tower also functions to maintain a relative humidity of 90 to 100 per cent in the circulating gas so that the latex concentration is not altered in the treating tower 15. An alkali e.g. potassium hydroxide, may be added to the latex prior to the treatment in the tower 15 in an amount of at least the " KOH number" of the latex.
Patent GB-1127760-A (GB)
Title: Improvements in or relating to moving-coil transducers
IPC: H04R9/00
Filed: 1966-07-13
Abstract: 1,127,760. Moving coil transducers. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 13 July, 1966 [16 July, 1965], No. 31499/66. Heading H4J. In a microphone, loud-speaker or other moving coil transducer, a throat portion which connects a diaphragm with the moving coil is formed from thermo-set synthetic material without the application of pressure to contribute to the setting of the material. In manufacture of a loud-speaker, a mandrel 12 comprising two separable parts 13, 14 is provided, a diaphragm cone 10 being located on the part 14. The voice coil 7 is wound on a thinner end 15 of the part 13. Epoxy resin or other synthetic material is sprayed by a nozzle 16, excess material being drawn off by two side nozzles 17, 18. A layer of hardened synthetic material forms a throat 8 and regions 19, 20 may be such that merely the required rigidity is obtained. The hardening may be obtained by a heating member inserted in a recess 21. The nozzles 16, 17, 18 may move round the mandrel 12 or the mandrel 12 may be moved around stationary nozzles. Several sets of nozzles may be provided. Alternatively electrostatic spraying is used. The synthetic resin may be in powder form. The coil 7 may be wound so that one turn touches the next, the insulation being heat softened to join adjacent turns. The diaphragm 10 may be centred by a centring ring (4), Fig. 1 (not shown), the inner edge of the centring ring (4) being embedded in the synthetic material. The transducer may be a microphone having a short throat 8 (Fig. 3, not shown).
Patent GB-632108-A (GB)
Title: Improvements in curing synthetic copolymers containing allylic unsaturation
IPC: C09D135/06
Filed: 1947-11-28
Abstract: The curing to the insoluble, infusible state of acetone-soluble copolymers derived from diallylic fumarates, e.g. diallyl or dimethallyl fumarates, and styrene or a derivative thereof e.g. p-chlorostyrene and p-methyl-styrene, is accelerated by the addition to their solutions of soluble manganese salts or soaps, e.g. manganese chloride, acetate, 2-ethyl-hexanoate, linoleate, naphthenate and resinate.  The soluble copolymer may be prepared by halting the polymerization short of the gel stage or by polymerizing in the presence of a regulator, e.g. allyl or methallyl alcohol, as described in Specification 606,080, or a mono-olefine, e.g. ethylene, propylene, isobutylene, diisobutylene, triisobutylene, butene, hexene, dodecene, cyclohexene, methyl cyclohexene and their isomers. Suitable solvents for the copolymers are xylene, toluene, acetone, ethyl acetate, methyl alcohol, diacetone alcohol, carbon tetrachloride and copolymerizable compounds, e.g. methyl and allyl acrylates, dialkyl fumarates and vinyl acetate.  The solutions, which may contain titanium dioxide, may be used as coatings on metal, wood and glass.  Interpolymers from diallyl fumarate, styrene, diisobutylene and, if desired, acrylic or methacrylic acid esters, indene or diallyl-oxyethyl fumarate, are prepared by refluxing in solution in the presence of benzoyl, acetyl, acetylbenzoyl, succinyl or tert.-butyl hydrogen peroxide and precipitating with a non-solvent.
Patent GB-1582661-A (GB)
Title: Investigating flatness by interferometry
IPC: G01B9/02
Filed: 1977-07-27
Abstract: In an interferometric measuring system, a collimated monochromatic and coherent beam of light (1, I1-In)impinges on a grating 1 disposed parallel to the test surface 2. It has been found that in the above arrangement, a diffraction order (preferably the first diffraction order S1-S4) of the light reflected from the face of the grating opposite to the test surface is always parallel to three diffraction orders of the radiation which after being first diffracted upon its first passage through the grating and reflected from the test surface is again diffracted upon its second passage through the grating. These four radiations (S1 to S4) generate two interference fields, the combination of which generates a beat pattern. According to the invention, the angle of incidence of the radiation impinging onto the face of the grating opposite to the test surface is chosen in such a way (preferably from 0.5 DEG  to 5 DEG ) that the areas in which the beat patterns generate an additional field of interference fringes, related to  lambda /4 distances, from the test surface are a maximum. When properly selecting pairs of angles of incidence and of distances between test surface and grating the resolution of the resulting fringe pattern (interference fringes symmetrically interleaved by beat fringes) is improved by the factor of 2, i.e. the distance between two fringes is related to a  lambda /4 distance from the test surface, as opposed to the interferometric methods known heretofore where the maximum resolution is defined by fringe distances related to  lambda /2 distances from the test surface.
Patent GB-505850-A (GB)
Title: Improvements in or relating to cathode ray tubes
IPC: H01J29/89
Filed: 1937-11-17
Abstract: 505,850. Cathode-ray tubes. FERNSEH AKT.-GES. Nov. 17, 1937, No. 31662. Convention date, Nov. 17, 1936. Drawings to Specification. [Class 39 (i)] A cathode-ray tube comprises a mosaic of optical systems arranged parallel to the fluorescent screen and acting as convex lenses or concave mirrors so as to reduce the solid angle occupied by light radiated from the screen; each of the optical systems being of a size smaller than or about equal to that of the light spot produced on the screen. The mosaic may consist of a number of hexagonal optical systems completely covering the mosaic surface and arranged so that two opposite edges of each hexagon are perpendicular to the direction of line scanning in a television receiving tube. Alternatively, the mosaic may, be formed by minute glass spheres or hemispheres fastened to a mica plate or to the carrier for the luminescent particles of the screen by an adhesive of low refractive index. Concave mirrors may be used as the optical systems, light emitted from the back of the fluorescent screen being reflected by the mirrors and used together with light from the front of the screen to form an image by projection by a further optical system. The luminescing particles of the fluorescent screen are preferably arranged in the focal plane of the optical systems, of the mosaic. The plane end wall of the cathode-ray tube may be formed as the optical mosaic, or this end wall may form the projection lens. The mosaic may be formed by stamping and when it comprises a system of mirrors their axes may be arranged at an angle to the plane of the mosaic. The fluorescent screen and mosaic may both be spherically curved so that the axes of all the mosaic elements meet at a point, and this point is made to coincide with the optical centre of the projection system ; alternatively, a plane mosaic may be used, the axes of the individual elements being arranged to meet at a point. The curvature of the fluorescent screen may serve to obviate distortion in the image.
Patent GB-619905-A (GB)
Title: Curing of polyethylenes
IPC: C08K5/14
Filed: 1946-10-25
Abstract: Saturated and soluble solid ethylene polymerization products, e.g. the surface of films and coatings, are cured by incorporating therewith a curing agent by subjecting the polymerization product or articles prepared therefrom to the action of a solution of the curing agent in a non-solvent for the polymerization product at the temperature employed, and then heating above 40 DEG  C., preferably between 70 DEG  and 250 DEG  C. Specified ethylene polymerization products are polyethylene and interpolymers of ethylene with at least one other organic compound containing polymer-producing unsaturation, e.g. carbon monoxide, acrylic acid esters and nitrile, alkacrylic acids, esters and nitriles, vinyl acetate, propionate and chloride, vinylidene halides and maleic and fumaric acids and derivatives thereof.  The curing agents are capable of generating free radicals below 200 DEG  C. when heated, specified are benzoyl, lauroyl, diethyl, ditertiary butyl and diisopropyl peroxides, hydroxy-methyl, tertiary butyl and ethyl hydroperoxides, oxygen, aceto-, benzo-, phthalic and succinic mono-peracids, ethyl percamphorate and perbenzoate, tert.-butyl perbenzoate, chloramines B and T, dichloramine T, lead tetraethyl, lead diethyl dibromide, triethylamine oxide, hydrazine hydrate, hydrochloride and sebacate, dibenzoyl hydrazine, diphenyl ketazine and aldazines. The preferred solvents have a swelling action on the polymer at their boiling points or lower temperatures, suitable solvents are given in the Trans. Faraday Soc., v. XLII, parts 1 and 2, 1946, p. 22, xylene being preferred.  The polymerization products may contain fillers, pigments and plasticizers, e.g. calcium carbonate, iron oxide and crown clay.  Preferably, the heating step is carried out under superatmospheric pressure and by contact with a hot metal surface, e.g. a mould or press.  The invention may be applied to the curing of preformed articles, e.g. mouldings, coatings, e.g. extruded on wires, films and fibres. Specification 597,833 is referred to.