baber/WOPTO huggingface dataset:
Patent GB-807672-A (GB)
Title: Improvements in and relating to selective positioning mechanisms
IPC: H04L17/26
Filed: 1954-04-09
Abstract: 807,672. Electromagnets. COLLINS, C. A. HENN-. July 6, 1955 [April 9, 1954], No. 10460/54. Class 35. [Also in Groups XXXVIII and XL (b)] In a selective positioning means in which the position of a controlled member is obtained by the algebraic sum of the movements of serially connected individual members, a first member movable by electromagnetic means to assume a position in response to a signal is permanently connected to form a rigid drive connection with a second member which transfers its movement to a third member and electromagnetic means carried by the second and third members is operated conjointly in response to a signal to displace the third member relative to the second member to assume a further desired position, the third member being connected to the controlled member either directly or through further members similar to the said second and third members. In the arrangement shown in Fig. 1, the armature 13 is located with its ends adjacent arcuate pole-pieces 11, 12 each extending over 90 degrees and a reversal of the current through the winding 14 rotates the armature 13 through 90 degrees. The armature 13 is directly coupled to a ring 16 carrying polepieces 17, 18 extending over 135 degrees. The armature 19 is connected to a type-wheel 24. The operation of the armature mechanically rotates the ring 16 and armature 19 through 90 degrees and a reversed current through winding 23 effects an additional rotation of 45 degrees. In a modified arrangement, Fig. 2, a sleeve magnet 27 is slidable in a fixed core 26 having shoulders 31, 32 of opposite polarities. The magnet 27 is coupled by a shaft 34 to a magnetic core 33 slidable on the shaft extension 39 of a sleeve magnet 37 co-operating with polepieces 35, 36 formed on the core 33. The shaft 39 is connected to the member to be positioned and the movement effected by the sleeve magnet 27 is arranged to be twice that of the magnet 37 so that the shaft 39 can take up four positions corresponding to 0, 1, 2 or 3 units of movement. A modification to obviate the risk of the magnet sticking to the polepieces and in which the shouldered polepieces of the core are extended to overlap the end portions p1, p2 of the sleeve magnet is indicated in Fig. 3 (not shown). Specification 745,496 is referred to.
Patent GB-105687-A (GB)
Title: Improvements relating to Liquid Sprayers or Atomisers.
Inventor: ANDREW TOM
IPC: B05B7/24
Filed: 1916-07-25
Abstract: 105,687. Andrew, T. July 25, 1916. Spraying-machines; air-pressure sprayers.-In atomizing-apparatus in which liquid is sprayed by compressed air, the liquid supply is controlled by a valve normally closed but opened by the air when its pressure exceeds a predetermined amount. Fig. 1 shows the arrangement of a plant in which the air compressor a delivers air to the reservoir b and from thence through the cooler and oil separator c to the air main h. Water is delivered from a pump or the main through the pipe e provided with an air vessel f, through the closing chamber g to the valve i and thence to the cooling chamber c and pipe d. The valve may be a spring-pressed flap or mitre valve o, Fig. 2. actuated by a diaphragm or piston n in a cylinder connected with the air supply pipe; or it may be a piston valve o, Fig. 4, similarly connected to a piston n in which case a passage q is formed to allow the escape of water into the passage j when the valve rises. Separate valves may be provided for each atomizer.
Patent GB-147309-A (GB)
Title: Improved construction of floors, roofs, landings and the like
IPC: E04C3/22
Filed: 1919-04-29
Abstract: 147,309. Laing, J. W. April 29, 1919. Reinforced block-work beams; girder floors; roofs; staircases.-Floors, roofs, landings, &c. are formed of reinforced blockwork beams laid side by side and consisting of blocks with vertical side faces having grooves 3 and bottom flanges 2, the upper faces of the flanges being concave and merging into the lower flat face of the bottom groove 3. Specifications 121,039 and 122,798 are referred to.
Patent GB-884995-A (GB)
Title: Improvements in methods for the obtainment of articles of chromium or containing chromium and in articles obtained by these methods
IPC: C23C10/10
Filed: 1958-04-02
Abstract: A method of purifying chromium comprises heating a mass of chromium or chromium alloy powder of average grain size 1/10 m.m. at a temperature of at least 600 DEG C. in a mixture of vapours of at least one halide of at least one metal in said mass for such time that no substantial sintering takes place and in such manner that oxygen, water vapour, ammonia, and nitrogen are excluded. The chromium or chromium alloy powder may be placed in a container with a halogen or a halide of one of the metals present and heated in a stream of pure hydrogen.  The powder may also contain a metallic oxide the heat of formation of which is higher than that of chromium oxide, e.g. magnesia.  It is stated that the purified powder is very ductile and may be easily compressed.
Patent GB-1152968-A (GB)
Title: Method of manufacturing Solid Fuel Briquettes
IPC: C10L5/32
Filed: 1968-03-05
Abstract: 1,152,968. Solid fuel briquettes. SOLVAY & CIE. 5 March, 1968 [29 March, 1967], No. 10659/68. Heading C5G. Briquettes of coal or other solid fuel, e.g. with a pitch binder, are given a clean surface by coating them, e.g. by dipping or spraying, with a latex of a film-forming synthetic resin composition. The latex may originate from the polymerization of monomers in aqueous solution, or from the emulsification of polymers. Synthetic resins listed include: vinyl acetate homopolymers and copolymers with external and internal plasticizers respectively; vinyl acetate-ethylene copolymers; polymers and copolymers of vinyl chloride and of vinylidene chloride; and copolymers of alkyl acrylates or alkyl methacrylates (not being derived from an alcohol having 4 or more carbon atoms); and acrylonitrile copolymers. Additives (thickeners, protective agents &c.) are listed.
Patent GB-329107-A (GB)
Title: Improvements in and relating to cement compositions
IPC: C04B18/18
Filed: 1929-04-06
Abstract: 329,107. Cadman, H., and Cadman, N. April 6, 1929. Compositions containing cement and hair.-A composition for use as a plaster or as an ingredient therein consists of a dry mixture of Portland or like cement and hair. The proportions may be four to five parts by volume of cement and one part of hair.
Patent GB-1489452-A (GB)
Title: Aluminium alloys for long run printing plates
IPC: C22F1/04
Filed: 1975-03-14
Abstract: 1489452 Aluminium alloy SWISS ALUMINIUM Ltd 14 March 1975 [18 March 1974] 10679/75 Heading C7A Aluminium alloys suitable for the production of offset lithographic printing plates and having a high fatigue strength and good wear resistance contain Mg 0À2-0À9 Cu 0À35-0À7 Al Balance with impurities of Fe 0À0-0À7, Si up to 0À3, Mn up to 0À05, Zn up to 0À05, Ti up to 0À03 for grain refinement, Cr up to 0À05 and B up to 0À02. The alloys may be cast normally, homogenized at 480-620‹C depending on composition, hotrolled at 400-480‹C, cold-rolled, with intermediate anneals at 315-400‹C, to penultimate gauge, finally cold-rolled with at least 20% reduction to size, and then parially annealed at 120-260‹C to produce material with an 0À2% offset yield strength of 15À5 - 19À9 kg/mm<SP>2</SP>. This processing produces alloys with high fatigue strength and retaining further work hardening capacity so that wear is minimized.
Patent GB-683684-A (GB)
Title: Process and apparatus for the exact separation and sorting of mixtures according to the velocity of fall in a liquid medium
IPC: B03B5/62
Filed: 1948-04-19
Abstract: 683,684. Upward-current classifiers. EDER, T. April 19, 1948 [Nov. 11, 1947], No. 10757/48. Class 82(ii) Grains to be separated, e.g. of sand or kaolin, are introduced as a suspension into a rising column of liquid which is introduced into a separating vessel at a constant rate, the suspension being fed into the vessel at a point well below the top and the vessel being so shaped that the velocity of the liquid increases gradually from bottom to top i.e the cross-section decreasing upwardly from the admission level of the separating liquid to the admission level of the suspension, increasing over a distance sufficient to accommodate the increase in volume due to the admission of the suspension, and then decreasing again up to the discharge level. A separating vessel, Fig. 1, comprises two parts 1, 2 each belling outwardly and then inwardly, the suspension grains to be separated being introduced tangentially at 3 and water at 4. Sinks are discharged through the exchangeable nozzle 6 and floats at 7 annular guide-plates 8a, 8b, 8c are provided. Additional water is fed into the suspension feed pipe 3 at 9. In a modification, a slowly rotating stirrer is mounted axially in the vessel. the suspension being introduced tangentially, as in Fig. 1, or axially through the hollow shaft of the stirrer. In a further modification, Fig. 9, the suspension is supplied to an annular jacket 16 and water to another annular jacket 18. A two-stage plant, Fig. 11, comprises separating vessels 20, 21 fed with suspension from a vessel 30. Water passes from a constantly overflowing tank 22 through compensating vessels 25...29 to the vessels 30, 20, 21. Floats pass from the vessels 20, 21 to settling funnels 36, 37. The concentration of discharged material may be automatically controlled by a floatcontrolled valve, not shown.
Patent GB-182927-A (GB)
Title: Process for the production of stable compounds of calcium hypochlorite
IPC: C01B11/06
Filed: 1921-04-13
Abstract: Compounds comprising molecular proportions of calcium hydrate in combination with one molecule of calcium hypochlorite may be used for bleaching.ALSO:Compounds of calcium hypochlorite and calcium hydrate such as those referred to in Specifications 8476/07 and 17859/14 are stabilized by washing to remove calcium chloride and by subsequent drying at temperatures up to 110 DEG  C. either in vacuo or at ordinary pressure.  The products thus prepared, which comprise compounds containing 1-4 molecules of calcium hydrate in combination with one molecule of calcium hypochlorite, are stated to possess various advantages over ordinary bleaching-powder, in that they remain almost unaffected at elevated temperatures at which bleaching-powder would be decomposed, have a higher percentage of available chlorine, and possess only a faint smell. In an example, one cubic metre of chlorinated milk of lime containing 145 grms. of available chlorine per litre is stirred with 60 kilos. of calcium hydrate, after which 128 kilos. of moist salts are separated from the mother liquor.  The product, after drying at an elevated temperature, weighs 100 kilos. and contains 42 per cent of available chlorine.  In another example, a lime sludge containing 100 parts of quicklime and 250 parts of water is chlorinated by stirring in a closed vessel until 85 parts of chlorine have been taken up.  The product is freed from the calcium-chloride mother-liquor and the pressed cake dried in a steam drying-oven.  The product contains 50 per cent of available chlorine, and in this case contains the compound comprising one molecule of calcium hydrate in combination with one molecule of hypochlorite, in addition to that containing twice this quantity of hydrate.  The proportions of calcium hydrate and chlorine may be varied so that other products of higher basicity, or, on the other hand, mixtures of basic hypochlorite with neutral hypochlorite may be produced, as desired.  The compounds are suitable for use in bleaching and disinfecting.
Patent GB-1029225-A (GB)
Title: Polyfunctional aziridine derivatives
IPC: C07D203/08
Filed: 1964-03-13
Abstract: The invention comprises compounds of the formula <FORM:1029225/C2/1> where R is a polyvalent acyclic radical containing no reactive unsaturation and in which the carbon chain may be interrupted by oxygen, R1 is a divalent acyclic, cycloaliphatic or aromatic radical, R2, R3, R4 and R5 are hydrogen or alkyl or aryl groups, and n is an integer of at least 2; and their production by condensing an appropriate a ,b -alkylene imine, in the presence of an acid acceptor, with a compound R(OCOR1COCL)n, which may be obtained (i) by chlorinating (e.g. with SOCl2 or PCl3) the condensation product of R(OH)n and R1(COOH)2 or its anhydride or (ii) condensing R(OH)n with R1(COCl)2.
Patent GB-905600-A (GB)
Title: Improvements in or relating to colour or tone correction in printing processes
Inventor: ALLEN GORDON STANLEY JAMES
IPC: H04N1/60
Filed: 1958-04-03
Abstract: 905,600. Copying by scanning. CROSFIELD ELECTRONICS Ltd. March 31, 1959 [April 3, 1958], No. 10836/58. Class 40 (3). Images to be reproduced by a printing process using an electro-optical scanner, are first examined point-by-point by a separate televisiontype system which incorporates circuits having adjustable characteristics corresponding to those of electronic correction circuits incorporated in the electro-optical scanner, a reproduced image being examined and the circuits adjusted until it is satisfactory. Corrections derived from the settings of the circuits are then transferred to the correction circuits of the electro-optical scanner used in the reproduction process. The invention is described as applied to the examination of a coloured transparency 20 by means of a cathode-ray tube flying-spot scanner 14 and photo-electric cells 32, 38, 40 with associated colour component filters 30, 34, 36. The resulting signals pass through tone-compensating circuits 42 which modify the gamma or contrast in correspondence with the modification which takes in the preparation of separation negatives from a transparency, circuits 43 and 44 which by cross-coupling between the three channels simulate the effect of errors in printing inks due to overlap in their colour ranges, and non-linear circuits 46 which simulate distortions due to additivity failure in ink absorptions. The signals then pass to circuits 48 and 50 whose characteristics are adjustable and which introduce respectively the kind of colour and tone correction which can be achieved by the electronic correction circuits incorporated in the electro-optical scanner used in the reproduction process. Finally the signals pass to a display device comprising cathode-ray tubes 52, 54 and 56. From the settings of circuits 48 and 50 required to produce a satisfactory final display corresponding corrections are introduced into the actual reproduction process. A hinged mirror 16 may be moved into the optical path in front of cathode-ray tube 14 in order to direct light to a second scanning station, Fig. 2 (not shown), intended to accommodate three colour separation negatives of an original. The signals produced are applied to the alternative inputs of a switch 88 so as to bypass the circuits 42. Reference is made to the use of a black printer negative in addition to the three separation negatives. The invention may be applied to black-and-white reproduction processes.
Patent GB-1179337-A (GB)
Title: Improvements in Measuring Bridge Circuits
IPC: G01K7/21
Filed: 1967-03-08
Abstract: 1,179,337. Measuring bridge circuits. ROSEMOUNT ENG. CO. March 8, 1967 [March 23, 1966], No.10976/67. Heading G1U. A measuring bridge system 10 is arranged to provide a linear output Eo relative to changes in the measured parameter by providing a linearizing power supply between the bridge terminals 15, 16. Two sources of non linearity arise, one inherent in the bridge configuration and are in the relation between the non electric parameter e.g. temperature to be measured and the correspondingly varied bridge resistance R4. Either positive or negative linearization may be achieved i.e. successive bridge output changes may relatively increase or decrease with increasing R4 to allow for decreasing or increasing sensitivity, by operating two switches in the circuit. With the switches as shown, positive linearization is effected. The voltage across R4 is applied at one input 17 of a differential transistor amplifier 23, 24. Any increase in R4 causes the potential at the collector of 24 to fall, and consequently that at the collector of 23 to rise to increase the base voltage of transistor 20. This increases the current through the transistor 20 and raises the voltage at the bridge input terminal 15. The bridge input voltage is also applied to the chain including resistors R1, R2 and Zener diode Vc, and the increased voltage across R2 is applied to the other input 21 of the differential amplifier, to cause the voltage at the collector of 23 to fall. The system reaches equilibrium when the two inputs to the amplifier are equal. It is shown in the Specification that any required degree of linearization to compensate for the non linearities referred to above can be established by adjusting the ratio R1: R2. The system may additionally be used to compensate for lead wire changes in the leads to the resistor R4 (e.g. if this is a temperature sensitive platinum resistor). Two leads to each end of R4 are arranged in series parallel combinations with other resistors Fig.4 (not shown) which are adjusted to provide the best linearization of Eo.
Patent GB-470908-A (GB)
Title: Improvements in or relating to siphon-discharge flushing cisterns
IPC: E03D1/08
Filed: 1937-04-17
Abstract: 470,908. Siphon - discharge water - waste-preventers. TATTON, E. April 17, 1937, No. 10984. [Class 26] In a piston - initiated siphon - discharge waterwaste-preventer, the actuating lever g is located within the cistern by being pivotally mounted on a clamping-ring h embracing the siphon, and the lever is actuated by a rod passing through a sealed bearing aperture in the top or bottom of the cistern. In Fig. 1, the lever g is attached to a rod l housed within an upstanding tube n having a sealing-connection o with the bottom of the cistern. In Fig. 3, for the low-down type of cistern, the lever is attached to a rod q fitted with a press-knob t and passing through a bearing s in the upper part of the cistern.
Patent GB-834166-A (GB)
Title: Polymeric elastomers and solutions therefor
Inventor: HENRY A PACE
IPC: C08G18/42
Filed: 1958-04-08
Abstract: The invention comprises a composition of matter which comprises a cured solid elastomer obtained by the reaction of (A) linear polyesters prepared from a polyhydric alcohol or mixtures thereof and an aliphatic polycarboxylic acid and mixtures thereof and containing terminal hydroxyl groups and having molecular weights ranging from about 1700 to about 2100; (B) water in the amount of from 2.5 to 4 mols. per mol. of polyester; and (C) a diisocyanate selected from the group consisting of 2,4-tolylene diisocyanate and mixtures of 2,4- and 2,6-tolylene diisocyanate, the 2,6-isomer in said mixture being present to the extent of not more than 20% of the total weight of the diisocyanate in the mixture and the total diisocyanate being present in an amount of at least 80 mol. per cent of the equivalent amount required to react with the reactive groups present in the polyester and the water.  Such products are obtained by allowing the mixture of reactants to foam and destroying the foam before the mixture is converted to a solid elastomer by means of a shearing action exerted on the foaming mixture, allowing the evolution of carbon dioxide and heating the resulting elastomer to effect a complete cure.  In the reaction mixture small amounts of compounds having more than two functional groups, such as castor oil, may be present.  The products can be dissolved to form solutions suitable for casting, coatings and cements.  Suitable solvents are dimethyl formamide, dimethyl acetamide, dimethyl propionamide (together with 0.1 to 1% of a dissolution agent, di-n-butylamine being specified) or dimethyl sulphoxide.  In a typical example, a polyester (M.Wt. 1800, OH No. 60) from ethylene glycol, diethylene glycol, 1,4-butanediol and adipic acid is reacted with about 0.53 mols. of a mixture of 98 parts 2,4- and 2 parts 2,6-tolylene diisocyanates.  The product is then mixed with a similar amount of the diisocyanate mixture, and with castor oil, a condensation product of aniline and butyraldehyde as catalyst, and water, the foam structure being destroyed by shearing action.  N-Methyl-morpholine is added and the mixing continued until a powder is obtained.  In a comparison experiment, using 48% 2,4-isomer and 52% of 2,6-isomer, a dimethyl formamideinsoluble product is obtained.
Patent GB-774693-A (GB)
Title: Improvements relating to the lubrication of metallic surfaces
Inventor: HALLIDAY JOHN STEVEN
IPC: B21C37/00
Filed: 1954-04-14
Abstract: Prior to cold working by means of a die, extrusion-nozzle or other relatively sliding surface, a metallic body is subjected to one or more cycles of treatment comprising initial oxidation and subsequent reduction so as to form a porous surface film and thus provide for lubrication of the body during the working.  The oxidation may be effected by heat-treatment in air or anodic treatment in an electrolyte and the reduction may be effected by heat-treatment at high temperature in the presence of hydrogen or cathodic treatment in an electrolyte.  Metals which may be treated include copper, brass, mild steel, chomium steel, nickel, titanium and zirconium.
Patent GB-1280014-A (GB)
Title: Improvements in or relating to eye droppers
Inventor: BERRY GORDON HUGH
IPC: A61F9/00
Filed: 1969-03-01
Abstract: 1280014 Eye dropper G H BERRY 26 May 1970 [1 March 1969] 11068/69 Heading A5R An eye drop applicator comprises an eye bath and an eye dropper which has a stem which extends through the wall of the eyebath, so that a nozzle at one end of the stem is disposed within the eyebath and a compressible bulb at the other end of the stem outside the eyebath. The dropper is a sliding fit in an aperture in the eyebath wall and is held in position by either a rubber grommet 9 or by resilient serrations (15) Fig. 6 (not shown) fixed at the periphery of the aperture. Two or more apertures may be provided in the eyebath, and the eye may be washed by filling the bath with a suitable liquid and providing turbulence by means of a dropper 6 with the eyebath in position over the eye. Reference has been directed by the Comptroller to Specification 1163903.