baber/WOPTO huggingface dataset:
Patent GB-1004767-A (GB)
Title: Improvements in and relating to rotary shaft and like couplings
Inventor: KNOTT BERNARD ROBERT
IPC: F16D3/78
Filed: 1963-06-12
Abstract: 1,004,767. Universal joints. RUBBER PLASTICS Ltd. Aug. 31, 1964 [June 12, 1963], No. 23360/63. Heading F2U. A flexible shaft coupling comprises a central resilient disc 1 in face contact with outer resilient annular discs 2, the disc 1 having a series of bosses 13 engaging recesses 14 in the discs, and the latter also having a series of outer bosses 15 for the reception of sleeves 8 and end caps 16 through which pass pairs of securing bolts 9 carried by radial arms 12 on the driving and driven shafts 6. The inner faces of the discs 2 are formed with open-ended radial slots 17 for the passage of cooling air, and the central disc 1 is provided with hemispherical bosses 3 engaging correspondingly shaped recesses in the ends of axial pins 5 inserted in the ends of the shafts 6. By making the depth of diametrically opposite slots 17 greater than that of adjacent slots the webs 18 formed in the discs 2 are alternately of different thickness so that the angular deflection can be made the same for unequal load torques in opposite directions. The discs 1, 2 are preferably made of polyurethane to enable couplings of the same dimensions to be produced for differing torque requirements by varying the grade of material.
Patent GB-709450-A (GB)
Title: Preparation of adipaldehyde
IPC: C07C45/40
Filed: 1951-10-08
Abstract: Adipaldehyde is prepared by a process which comprises reacting ozone with cyclohexene dissolved in an organic hydroxylic solvent, i.e. an alcohol or monocarboxylic acid, wherein the hydroxyl group is attached to an aliphatic carbon atom and thereafter reducing the reaction product to adipaldehyde.  Solvents mentioned are alcohols, especially lower boiling saturated aliphatic monohydric alcohols such as methanol, ethanol, isopropanol and tert.-butanol and monocarboxylic acids, especially lower boiling saturated aliphatic monocarboxylic acids such as formic, acetic and propionic acids. Mixtures of organic hydroxylic solvents and non - hydroxylic solvents, e.g. chloroform, methylene chloride, hexane and carbon tetrachloride may be employed in both ozonization and reduction stages.  Ozone or oxygen-containing ozone may be passed through the cyclohexene solution in the ozonization step.  The reduction may be effected by catalytic hydrogenation under normal or elevated pressure at low temperature or with nascent hydrogen produced by reacting a metal above hydrogen in the electromotive series or with a reducing agent such as bisulphite, stannous chloride, hydroxylamine, titanium trichloride or potassium iodide. Metallic zinc-acetic acid is the preferred reducing mixture. Hydrogenation catalysts mentioned are those of the platinum group especially metallic platinum and palladium, their oxides and salts and they may be supported or extended on inert supports such as carbon, silica, alumina or kieselguhr.  A typical catalyst is prepared by mixing palladium chloride and sodium acetate solutions, adding activated carbon to the mixture and hydrogenating, filtering off and drying the catalyst. Reduction of the hydroperoxide derivative is carried out in a liquid vehicle, preferably a solvent.  When alcohol is employed as solvent the aldehyde should be separated quickly to avoid acetal formation and the separation may be carried out at low temperature under reduced pressure.  In examples: adipaldehyde is obtained by ozonizing cyclohexene in methanol, hydrogenating the products under pressure using a palladium-on-charcoal catalyst and fractionating the solution (I-III); an ozonization product prepared as above is dropped into sodium bisulphite solution, the mixture is treated with hydroxyl amine hydrochloride followed by ammonium hydroxide and the dioxime, which may be converted to the free aldehyde is precipitated (IV); cyclohexene is ozonized in solution in a glacial acetic acidmethylene chloride mixture and the product is reduced with zinc dust and water under nitrogen, methylene chloride being allowed to escape (V); and a solution of hydroperoxide prepared as in example (I) is added to a solution obtained by mixing methanolic hydroxylamine hydrochloride and aqueous sodium acetate when adipaldehyde oxime is obtained. Adipaldehyde prepared according to the present process may be converted to hexamethylene diamine.  Specifications 508,526 and 709,441 are referred to.
Patent GB-1075531-A (GB)
Title: Bonded particulate materials
Inventor: TYSON JOHN TYSON
IPC: B29C35/02
Filed: 1964-06-05
Abstract: Articles comprising a finely-divided filler and a binder of asphalt or bitumen are made by maintaining the filler as a dense fluidized bed at a temperature above the melting-point of the binder, injecting the binder in liquid or solid form into the bed, removing and cooling the resultant coated filler particles from the bed and finally compacting them to the required shape at an elevated temperature sufficient to cure the binder.  The filler may be sand, clay, earth, metal ore or metal particles, carbon, coal, coke or graphite. Examples of articles that may be made are building elements, briquettes or electrodes.
Patent GB-1105606-A (GB)
Title: Means for sealing a spindle
Inventor: BENTLEY-LEEK HERBERT
IPC: F16K41/02
Filed: 1964-06-05
Abstract: 1,105,606. Shaft seal; fluid-pressure control valves. SAUNDERS VALVE CO. Ltd. 2 June, 1965 [5 June, 1964], No. 23471/64. Headings F2B and F2V. A sealing arrangement for sealing e.g. the spindle 11 of a valve 13 comprises a tapered bushing 18 of nylon or P.T.F.E. reinforced with a filler and having a flange 17 for sealing contact with a housing 12, a follower 19 being urged into contact with the bushing by a spring means 21. The tapered bushing 18 may be reinforced with stainless steel, slate, asbestos, glass or silica in powder form; the reinforcement need not be in the flange 17. The spring means may be a number of wavy washers, as shown, or Belleville type springs. A metal washer 26 is located between a cap 26 and the flange 17 of the bushing. An abutment 31 is formed on the handle and is arranged to contact a stop on the cap 23 in order to limit the rotation of the spindle.
Patent GB-737470-A (GB)
Title: Improved washing machine
IPC: D06F7/04
Filed: 1952-09-18
Abstract: 737,470. Washing-machines. WALTER INSTRUMENTS, Ltd., NOAD, J. E. G., and ARMSTRONG, C. J. Sept. 8, 1953 [Sept. 18, 1952], No. 23512/52. Class 138 (2). A washing-machine comprises a support 1 adapted to stand in or on a container 7 for washing water, a motor 15 carried by the support for driving a vibratory element 36 in driven connection with the motor, and means enabling the mean vertical position of the element 36 relative to the support 1 to be varied and set. Maximum washing efficiency is stated to be obtained when the vibrating element 36 enters and emerges from the liquid during the vibratory cycle. The element 36 comprises a disc, dished plate or cone carried by a rod 23 to which are connected leaf-springs 26 anchored at their ends to fixed posts 27, the rod being secured to the solenoid core 18 of an electromagnetic motor 15 comprising a yoke 16 and coil 17 and mounted in a canister 8. The canister is suspended from a screwed post 11 engaged in a nut 38 mounted for rotation without axial movement in a bearing block 4. The nut 38 has a projecting part 40 carrying a disc 41 and an annulus 43 by means of which the nut 38 may be rotated to adjust the vertical location of the canister 8 and element 36. A hand-operable lock-nut 44 enables the nut 38 to be locked in the adjusted position. Rotation of the canister is prevented by three guide members 37, each of which is lined with hard rubber and engages one leg of the support 1. A splash guard 45 is secured to the canister 8 by radial arms 47. The rod 23 carrying the vibratory element 36 passes through an aperture in the lower part of the canister sealed by two flat rings 31 of rubber. The post 11 may be hollow to receive a supply lead connecting the motor 15 to the domestic A.C. supply.
Patent GB-455322-A (GB)
Title: Improvements in or relating to apparatus for issuing gummed strip paper, suitable for use for packing and like purposes
IPC: B65H35/00
Filed: 1935-08-23
Abstract: 455,322. Printing-machines. LEVANE, R., 22, Westbourne Street, Lancaster Gate, London. Aug. 23, 1935, No. 23653. [Classes 100 (i) and 100 (ii)] In apparatus for issuing gummed strip paper 21 for packing or like purposes, the strip passes between a printing-roller 1 and an impression roller 4, the impression-roller being raised by springs to force the strip into contact with the printing-roller and depressed by manual operation. In one form, the impression - roller spindle 5 is mounted in slots 6 in side-plates 3 and is supported by spring-arms 7 which are depressed by extensions 101 on a hand lever 9 when the strip is to be inserted between the rollers 1, 4. In a modified form, the extensions 10<1> engage hook-shaped ends on the spring arms 7. A clip 12 is provided for holding the hand-lever 9 in inoperative position, in the form shown in the Figure. An inking-roller 13, the web-supply roll 16, and a guide-roller 22 are also mounted on the side plates 3, which are adjustable laterally by a screwed spindle 27 to accommodate various width printing and rollsupporting devices and to act as a brake on the roll. The guide roll 22 consists of one or more sleeves loosely rotatable on a spindle 24.
Patent GB-1428850-A (GB)
Title: Damper arrangement
IPC: F16K1/00
Filed: 1973-05-17
Abstract: 1428850 Valves AMERICAN AIR FILTER CO Inc 17 May 1973 [26 May 1972] 23659/73 Heading F2V To isolate the valve spindle packing gland 23 from continuous exposure to pressurized fluid a sealing gasket 12 engages between flow conduit 14 and valve member 11 when the latter is in the fully open position of port 21. Gasket 12 may be mounted on conduit 14, as shown, or in a modification (Fig. 2, not shown) be mounted on valve member 11 and engageable with channel section ring (26) on conduit 14. Gasket 12 and ring (26) may be of rubber, polymeric resilient material, or steel.
Patent GB-215653-A (GB)
Title: Improvements in hanger-straps for passengers in tram-cars and the like
IPC: B61D49/00
Filed: 1923-09-21
Abstract: 215,653. Gottlieb, A. Sept. 21, 1923. Hand-grips for supporting passengers on vehicles are provided with advertising casings or frames 4 carried on plates 3 attached to the straps 1 or grips 2. Bars 5 or other means may be provided for keeping the strap open.
Patent GB-1507356-A (GB)
Title: Denture cleanser
IPC: C11D17/00
Filed: 1975-05-30
Abstract: 1507356 Denture cleanser BLENDAXWERKE R SCHNEIDER GmbH & CO 30 May 1975 23718/75 Heading C5D A powdered or tabletted denture cleanser contains at least 30% by weight of urea, a complexformer and a flavouring agent, filter, binder, or gasevolving agent.
Patent GB-687973-A (GB)
Title: Improvements in or relating to the ventilation and warming of public service and other vehicles
IPC: B60H1/00
Filed: 1950-09-28
Abstract: 687,973. Ventilating -vehicles. ASH & CO., Ltd., T., and MAY, A. I. Sept. 25, 1951 [Sept. 28, 1950], No. 23735/50. Class 137 [Also in Group XIII] In a unit for passing warm air into a vehicle such as a motor- or trolley-bus; a positively-driven centrifugal fan j draws air from outside the vehicle through an inlet f and a duct e, Fig. 4, and through a heater such as an engine coolant heatexchanger g or electric elements. Moreover, there are two air outlets l, m; one connected to a duct delivering air to a point or spaced points in the vehicle and the other to a duct n, Fig. 4, arranged to deliver air into the vehicle or into the inlet duct e so that it is recirculated through the heater. The rectangular unit, mounted under the vehicle floor, is divided into three compartments by vertical partitions. A compartment b has an inlet e' and contains the heat-exchanger g. A middle compartment c contains a screen h on which is vaporized a deodorant or disinfectant liquid delivered through a controlable nozzle u from a tank t kept under pressure by a connection v from the third, fan compartment d. The fan j is driven by an electric motor k. The vertical inlet and outlet ducts e, n, Fig. 4, have an intercommunicating duct p controlled by a pivoted damper having an external handle q which is clamped in any position on a slotted quadrant r by a wing nut s. The damper determines the relative quantities of warm air passing to the duct n and to the duct e from the outlet m..It may also shut off one or the other duct. On cold mornings, in order to conserve the coolant heat, the duct n is shut off and all the air from the outlet m passes back to the inlet duct e The parts shown separately in Fig. 1 and Fig. 4 together comprise the complete unit. The outlet m and inlet e<SP>1</SP> are at the bottom of the face side of the part shown in Fig. 1 and the outlet l is at the top of the reverse side. The outlets l, m take tangential air flows from the fan j.
Patent GB-1399732-A (GB)
Title: Electrophotographic copying machine
IPC: G03G15/02
Filed: 1972-05-19
Abstract: 1399732 Electrostatic charging apparatus CANON KK 19 May 1972 [20 May 1971 24 May 1971] 23737/72 Heading G2H [Also in Division H1] A photo-conductive member is charged during exposure to a light image, by means of a transparent-backed corona discharge apparatus with an electrode grid between its mouth and the photoconductive member. Preferably the corona discharge apparatus comprises discharge wires 18 in an enclosure formed by side electrodes 20, 20<SP>1</SP> and a transparent rear electrode 21, through which a light image is projected on a photo-sensitive layer 24. Gride electrodes 22 stretch across the mouth of the enclosure formed by the electrodes 20, 20<SP>1</SP> and 21.
Patent GB-459554-A (GB)
Title: Process for the working up of materials containing molybdenum or tungsten
IPC: C01G39/06
Filed: 1935-08-24
Abstract: Molybdenum and/or tungsten is recovered as ammonium molybdate and/or tungstate from materials containing carbonaceous substances and compounds of these metals, by gasifying or burning out at least the greater part of the carbonaceous substances at a temperature above 600 DEG  C., and treating the residues with an aqueous solution of ammonium carbonate at an elevated temperature under pressure.  The residues such as are obtained in the destructive hydrogenation of coals, mineral oils, tars, &c. in the presence of catalysts containing molybdenum and/or tungsten, and the conversion, extraction and distillation products thereof may be so treated.  Air and/or steam at temperatures preferably above 800 DEG  C., say 900--1000 DEG C., may be used in the treatment.  If the removal of carbon is incomplete, the residue is preferably treated with a concentrated aqueous solution of ammonium sulphate prior to the treatment with ammonium carbonate; this pre-treatment is preferably conducted at an elevated temperature to convert an alkaline earth metal compounds into sulphates.  Ammonium molybdate and/or tungstate may be recovered from the resulting solutions.  Alternatively, the solution may be boiled to remove ammonia and carbon dioxide, treated with ammonium sulphide (ammonium thio-molybdate, for example, being formed), and, finally, acidified with hydrochloric or sulphuric acids whereupon molybdenum or tungsten sulphide precipitates.  The remaining solution containing ammonium sulphate (produced in part by the action of the ammonium carbonate on the calcium sulphate present in the material from the first step) may be used for the pre-treatment of fresh incompletely burnt out residues and then worked up for the recovery of solid ammonium sulphate.  Examples are given.  Specifications 350,135 and 375,948 are referred to.
Patent GB-697719-A (GB)
Title: Feeding mechanism for sewing machines
IPC: D05B73/00
Filed: 1951-09-08
Abstract: 697,719. Sewing-machines. FAIRWEATHER, W. C. (Singer Manufacturing Co.). Sept. 8, 1951, No. 23818/61. Divided out of 697,702. Class 112. Feed by dogs.-The feed mechanism comprises an actuating shaft journaled in the bed of the machine and carrying a feed-advance eccentric 44 and a feed-lift eccentric 45, a feed-rocker 91 pivotally supported at one side of the shaft on a stud 92, a feed bar 88 connected at one end to the rocker 91 and at the other to the feed-lift eccentric and carrying a feed-dog 86, a pair of toggle links 98, 99 of which one is connected at 100 to the feed-bar, between the ends of the latter, and the other is journaled at 101 on an anchor-arm 117 adjustable about a fixed pivot 103, and a pitman 96 connecting the feedadvance eccentric 45 to the joint between the toggle links. In the embodiment shown, the anchor-arm 117 is adjusted about its pivot 103, to vary the length of stitch, by a thumb-disc 109 mounted on a stud 110 screwed into a transverse wall of the machine bed; the arm 117 and disc 109 lie with their hubs against this wall, and the link 105 connecting them is kept on its pivot projections 107, 108 by contact with this wall. The whole feed mechanism is held in position by the fixing of the stud 92 in the machine bed, and can thus be assembled apart from the machine. The disc 109 carries a scale to indicate its setting, and can be clamped in any position by a finger-lever 112 which is secured to the stud 110 by a screw 113. The feed-dog is vertically adjustable on the feed-bar. The various bearing surfaces have bushings of oil-impregnated sintered metal. Specification 697,702 is referred to.
Patent GB-155398-A (GB)
Title: Improvements in or relating to the manufacture of painting, priming and like compositions
IPC: C09D5/02
Filed: 1919-09-30
Abstract: 155,398. Schou, E., and Emulsion Aktieselskabet. Sept. 30, 1919. Water paints; polishing-compositions.-Emulsions of the kind described in Specification 140,147 for use as paints or priming-compositions are prepared by the use of devices which act on the injection or atomizing principle so as to bring about the fine division of the oil particles by collision, friction, &c. of the particles upon each other or upon stationary or moving parts of the apparatus, or upon injected air particles. The emulsions may be concentrated by evaporation at ordinary or reduced pressure or by extracting water by osmotic or other processes. Solid materials such as paraffin or other waxes, resins, fats, lacs, &c. are melted before being emulsified, and emulsions prepared with these substances may be used for polishing wood, floors, leather, &c.
Patent GB-373025-A (GB)
Title: Improvements in processes for the carburisation of electrodes of discharge tubes
IPC: H01J19/00
Filed: 1931-08-26
Abstract: 373,025. Carburizing electrodes of discharge tubes. RADIOTECHNIQUE, 12, Rue La B÷etie, Paris. Aug. 26, 1931, No. 24061. Convention date, Aug. 28, 1930. [Class 82 (ii).] Electrodes for discharge tubes are carburized by heating them at a temperature above 850‹ C. in an atmosphere of illuminating gas which has been purified by passing it through an alkaline solution of permanganate. The electrodes may be heated in an atmosphere of hydrogen before and after the carburization. The electrodes are contained in a mould N in a furnace L and the illuminating gas is passed through tubes A<1>, A<2> containing the permanganate, and a drying tube B and is then conducted to both ends of a perforated tube T. The gases escape by tubes S<1>, S<2>. The electrodes may be in the form of wires or strips and are then passed continuously through the furnace.
Patent GB-1106456-A (GB)
Title: Improvements relating to frequency synthesis
Inventor: STANDFORD RICHARD THOMAS ALBER
IPC: H03B21/02
Filed: 1964-06-10
Abstract: 1,106,456. Frequency changing circuits. PLESSEY-UK Ltd. 9 June, 1965 [10 June, 1964], No. 24097/64. Heading H3F. In a frequency generating circuit having a switch means S for selectively supplying one of a first or second frequency to the input of a modulator 11 the output from which is fed back via a band pass filter 12 and frequency divider 13 having a variable division ratio so as to provide a modulating frequency and maintain the circuit functioning, changes in condition of the switch means and division ratio of the divider 13 enabling a random spectrum of frequencies to be generated. The circuit may be started by applying a signal at ST and the filter 12 is arranged so as to pass either the lower side-band of a frequency f 1  or the upper side-band of a frequency f 2  selected by the switch means S, which may be an electronic switch. The output from filter 12 is then passed via a divider 15 having a variable division ratio to a further band-pass filter 16. The division ratio n, m of dividers 13, 15 and the selection of f 1  or f 2  by switch S may be cyclically varied so as to obtain a spectrum of available output frequencies (Fig. 4, not shown). The divider 15 may alternatively be connected between the switch S and the modulator. Each of the frequency dividers has a band-pass filter connected at its output so as to convert the rectangular output from each divider into a sinusoidal wave.
Patent GB-833220-A (GB)
Title: Improvements in and relating to direct current high current installations or systems
IPC: H02H3/02
Filed: 1956-03-19
Abstract: 833,220. Protective arrangements. BROWN, BOVERI & CIE A.G. March 19, 1956 [March 17, 1955], No. 8458/56. Drawings to Specification. Class 38 (5). [Also in Group XXXV] A direct current high current system comprises a plurality of supply units in parallel, a collar of magnetic material arranged around the direct current bus-bars connecting the system to a load and a direct current circuit-breaker arranged to open when a reverse current occurs in the system upon the occasion of back-arcing occurring in one of the supply units and is characterized in that the collar is highly saturated by the normal flow of current in the bus-bars but when a reverse current occurs the saturation of the collar is temporarily reduced so that the rise of the reverse current is retarded and the current to be dealt with by the circuitbreaker reduced. The collar may be of solid or of laminated material and may have radial slits or joints therein.
Patent GB-979745-A (GB)
Title: Modified wax compositions
Inventor: KIDD NASH AUSTIN
IPC: C09D191/08
Filed: 1963-06-18
Abstract: A modified wax composition consists of a minor proportion of a copolymer of ethylene and an alkyl ester of an ethylenically unsaturated monocarboxylic acid and a mineral wax.  The copolymers are prepared at a temperature of 150-250 DEG C. and a pressure of 15,000-30,000 p.s.i. in the presence of oxygen or an organic peroxide e.g. lauryl peroxide or ditertiary butyl peroxide. Alkyl esters specified are methyl and ethyl acrylate, methacrylate and ethacrylate, isopropyl crotonate, n-butyl tiglate and 2-ethylhexyl senecioate.ALSO:A modified wax composition consists of an intimate mixture of a mineral wax, e.g. paraffin or microcrystalline wax, with a minor proportion of a copolymer of ethylene and an alkyl ester of an ethylenically unsaturated monocarboxylic acid.  Alkyl esters specified are methyl and ethyl acrylate, methacrylate and ethacrylate, isopropyl crotonate, n-butyl tiglate and 2-ethylhexyl senecioate.  Proportions of 0.1-29% copolymer are specified. Small amounts of dyes, pigments, lubricants, resins and plasticizers may also be added.ALSO:Sheet materials are coated with an intimate mixture of a mineral wax and a minor proportion of a copolymer of ethylene and an alkyl ester of an ethylenically unsaturated monocarboxylic acid, e.g. ethyl acrylate (see Division C5).  Sheet materials specified are paper, e.g. Kraft paper, cardboard, "Cellophane" (Registered Trade Mark), polyethylene, "Saran" film (Registered Trade Mark), textiles, sheet metal, metal foil, e.g. aluminium foil, wood and ceramics.  The coated sheets may be heat sealed by passage through the nip of heated rollers followed by passage through cool rollers.