baber/WOPTO huggingface dataset:
Patent GB-486495-A (GB)
Title: Improvements in the production of multi-colour photographic pictures
IPC: G03C7/26
Filed: 1936-10-28
Abstract: 486,495. Colour photography. GROVES, W. W. (I. G. Farbenindustrie Akt.-Ges.) Oct. 28, 1936, No. 12463/38. Divided out of 486,424. [Class 98 (ii)] A material having superimposed differently sensitized silver halide layers is subjected after exposure to a first development which is common to all the layers, the undeveloped silver halide is removed by fixing and the silver reconverted to silver halide for example by using a chromic-acid potassium bromide bath followed by treatment with a sulphite. The material is then subjected to an exposure with light of a spectral region for which one layer is specially sensitized, developed, and the image in the layer printed onto an auxiliary film. Alternatively, the layer may be colour developed, After dissolving the silver, the negative of the second component picture may be obtained in a corresponding manner. A bipack may be used having a front film not specially colour sensitized and a rear film coated with two superimposed layers sensitized respectively to green and red. The front film has a yellow dyestuff either cast thereon or included in the emulsion. The front film is developed to a negative, or by reversal to a positive and the rear film is treated as above, the second exposure being to green light accompanied by the copying of the green component onto an auxiliary film. After removal of the silver, the remaining layer is exposed to either red or blue light. If the front film has two layers, blue sensitive and green sensitive respectively and separated by a washable yellow filter, the exposures are to green light and daylight respectively. Suitable sensitizers are described in Specifications 386,791 and 400,951. In a modification, the final component picture may be produced without a second exposure by chemical conversion, toning or dyeing of the silver halide present. The process is applicable to material having three superimposed light sensitive layers, and to a four colour bipack material in which the front film carries a panchromatic layer for a gray component, and a layer not specially sensitized. The rear film in the latter case carries layers for the green and red components. The treatment of multi-layer material combined with either a colour screen or a lenticular screen is also described.
Patent GB-1343644-A (GB)
Title: Method of recovering diisopropylbenzene dihydroperoxide
IPC: C07C407/00
Filed: 1971-05-03
Abstract: 1343644 Di-isopropyl benzene dihydroperoxide SIGNAL CHEMICAL CO 3 May 1971 [4 May 1970] 12626/71 Heading C2C Di-isopropylbenzene dihydroperoxide is recovered from an oxidation reaction product containing diisopropylbenzene dihydroperoxide, di - isopropylbenzene monohydroperoxide, other reaction by-products and unreacted diisopropylbenzenes by (a) mixing the oxidation reaction product with an amount of waterimmiscible organic solvent in a weight ratio of from 0.1/1 to 6/1; (b) treating the resulting mixture with an aqueous sodium or potassium hydroxide solution of a weight concentration of at least 40% to precipitate the alkali metal salt of the di-isopropylbenzene dihydroperoxide from the solution; (c) separating the solid alkali metal salt from the mixture, and (d) converting the dihydroperoxide salt to di-isopropylbenzene dihydroperoxide. Suitable water-immiscible organic solvents are, for example, benzene, toluene, xylene, ethylbenzene, and di-isopropyl benzene.
Patent GB-642625-A (GB)
Title: Improvements in or relating to electrical heating elements
IPC: H05B3/34
Filed: 1948-05-07
Abstract: 642,625. Woven fabrics. ECKETT, S. W. May 7, 1948, No. 12640. [Class 142(iv)] [Also in Groups XI and XXXVI] A heating mat is formed by weaving a resistance wire 10 into a fabric of two or more layers of fabric woven from asbestos or like insulating yarn so that the wire joins the layers but does not reach the outer surface. The two fabric layers may have a continuous thick weft 1 common to both layers and passing from one layer to the other for successive runs, the two webs being woven into a compound fabric by a resistance wire 10 woven as a weft common to all the warp threads 6 .. 9 of both layers and lying between them. The ends of wires are twisted round metal pins 22 passing through transverse holes in terminal posts 18 which pass out through the fabric. The return lead 13 of the wire 10 runs along one side of the fabric in the bends 4 of the weft 1 and is held in place by woven warp threads 14, 15 and by a thick stuffing warp 16. When sufficient resistance wire has been incorporated, the fabric is further woven with an insulating thread 20 in place of the wire, which is led to terminal pins in these unheated extensions. The ends of the fabric are finished as a plain weave.
Patent GB-444444-A (GB)
Title: Improvements in or relating to electric tumbler switches
IPC: H01H23/16
Filed: 1935-04-30
Abstract: 444,444. Tumbler switches. BAIN, R., 25, Beaudesert Road, Handsworth, Birming- ham, and ALLDAY, N., The Nest, Streetly Lane, Four Oaks, both in Warwickshire. April 30, 1935, No. 12828. [Class 38 (v)] A tumbler switch has a dolly 9 pivoted at 12 to the bridge 7 and has a contact member 18 pivoted at an intermediate point (not shown), on the dolly. A link 22 slidably engages a hole in a boss 21 on the contact member, the other forked end 23 of the link being fulcrumed to the bridge at 24. A compression spring 25 providing a snap-action. A curved plate 27 on the contact member engages the underside of the bridge, and by its camming action converts into pivotal movement the initial longitudinal movement of the contact member due to the displacement of its pivot by movement of the dolly. In a modification, this action is produced by a rib on the base, engaging a flange on the contact member. Specification 443,748 is referred to.
Patent GB-238939-A (GB)
Title: Improvements in or relating to the art of nickel-plating
IPC: G01N31/16
Filed: 1924-05-26
Abstract: In a process of nickel-plating using a nickel salt solution containing boric acid, the proportion of boric acid present is determined by first neutralizing with a standard acid, such as sulphuric acid, to decompose any borate present, then adding an agent such as glycerine or mannite capable of preventing the dissociation of alkali borate to be formed in the subsequent titration with a standard alkali, this titration being carried out in the presence of an indicator capable of indicating the neutralization of the boric acid irrespective of the presence of nickel in the solution.  For the first neutralization, methyl orange is a suitable indicator; for the second, a mixture of bromo-cresol purple and bromo-thymol blue is selected.  This latter indicator changes from green to blue when the acidity changes from pH5 to pH6.
Patent GB-424743-A (GB)
Title: Improvements in and relating to television apparatus
IPC: H04N9/18
Filed: 1934-05-02
Abstract: 424,743. Television receivers. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. May 2, 1934, No. 13283. Convention date, May 2, 1933. [Class 40 (iii)] A television system for reproduction in colour employs a number of cathode-ray tubes, corresponding to the number of colours into which the view is analyzed, which are adapted to reproduce alternate lines of the image transmitted. Images reproduced by the cathode ray tubes 1, 2, corresponding to red and green in alternate lines of the view being transmitted are associated with red and green filters 10, 11 and are simultaneously observed by means of a partially silvered mirror 9. Instead of using filters 10, 11 the ends of the tubes 1, 2 may be coated with materials which produce red and green fluorescence, respectively. The rays are traversed over their screens by a single saw-tooth wave form, the bias on the corresponding deflecting plates of the two tubes being such that the ray is swept across one screen by the lower half of the wave, whilst the second screen is traversed under the action of the upper part of the saw-tooth wave.
Patent GB-133051-A (GB)
IPC: H01K3/30
Abstract: 133,051. Pohle, A. Aug. 28, 1918, [Convention date]. Seals.-To prevent use of an electric incandescent lamp before sale, a paper or cardboard sleeve h is screwed over the cap ; a paper strip shaving a hole i fits over the end of the bulb and its ends pass through holes in the sleeve h, and are secured together by a clip or by an adhesive. The sleeve h can only be removed by tearing the strip s.
Patent GB-784438-A (GB)
Title: Variable speed power transmission mechanisms
Inventor: ASHBY SYDNEY HENRY
IPC: F16H3/66
Filed: 1955-05-09
Abstract: 784,438. Change-speed gearing. AUTO TRANSMISSIONS, Ltd. April 16, 1956 [May 9, 1955], No. 13311/55. Class 80 (2). Epicyclic three - speed and reverse gearing comprises two intermediate shafts a, b adapted to be connected separately or simultaneously to an engine or other power source through a pair of magnetic-powder clutches (Fig. 1a, not shown), with shaft a surrounding shaft b, sun pinions i, j on shafts a, b, a toothed annulus o on an output shaft p and planet pinions n meshing with sun i and annulus o and with planet pinions m meshing with sun j, shaft a being provided with a friction brake h while the planet carrier k, freely mounted on shaft a, is provided with a one-way roller brake q and with a positive stop pawl r slidable into engagement with teeth s on the carrier. For first speed, shaft b is driven, reverse rotation of the carrier being prevented by the one-way brake q. For second speed, shaft b is driven and brake h engaged. For direct drive, both shafts a, b are driven. For reverse, shaft a is driven and stop pawl r is engaged with teeth s. Shaft p may drive a final driven shaft 12 through an epicyclic overdrive gear comprising a planet carrier 8 on shaft p, toothed annulus 11 on shaft 12, a one-way clutch 13 between shafts p, 12, and a loose sun 5 adapted to be braked or to be connected to annulus 11 by a slidable friction member 6.
Patent GB-673511-A (GB)
Title: Process for recovering structurally unsaturated cyclic hydrocarbons from hydrocarbon oils by extractive distillation
Filed: 1950-05-26
Abstract: Aromatic and unsaturated alicyclic hydrocarbons are separated from saturated hydrocarbons by submitting the mixture to extractive distillation using molten phthalic anhydride as solvent, whereby the saturated hydrocarbons (containing a small proportion of the anhydride) are obtained as "heads", and a mixture of the cyclic hydrocarbons and the bulk of the anhydride, is obtained at "bottoms". The process may be used for the separation of naphthalene from dodecane, decalin and other saturated hydrocarbons present in certain <PICT:0673511/III/1> cracked petroleum oils such as "light cycle gas oil."  The gas oil is introduced into the side of distilling-column 2 through line 1, and phthalic anhydride is introduced through inlet 9. The overhead vapours, which contain about 6 per cent of phthalic anhydride, are passed to condenser 5.  Part of the condensate is returned to column 2 as reflux, and the remainder is cooled to 20 DEG C. in cooler 11, where phthalic anhydride crystallizes out. The crystal-slurry is passed to centrifuge 13 from which the separated paraffins are discharged through pipe 25.  The last traces of phthalic anhydride may be removed from the paraffins by a wash with aqueous caustic alkali.  The liquid from the base of column 2 is passed through pipe 14 to column 15.  Aromatic and naphthenic hydrocarbons are withdrawn from the head of column 15, and phthalic anhydride is withdrawn from the base.  The recovered anhydride is recirculated to column 2 through pipe 17, make-up being introduced through pipe 18.
Patent GB-133890-A (GB)
IPC: B42F3/00
Abstract: 133,890. Matthews, R. B. March 1, 1919. Sheets.-The leaves of books are printed with an extra wide inner margin and with gauge marks to facilitate the removal from the completed book of any number of leaves and filing of the detached leaves in loose-leaf form. The pages a are printed on a large sheet with the letterpress lying towards one side, within the line b, thus leaving a wide inner margin for perforations, or on which gauge marks c are printed for subsequent perforation. A border line d is also printed to facilitate registration by trimming, and marginal tabs d' are marked which may be cut as required. A detachmentgauge line f is also made by indentations or perforations, so that when the leaves are detached a strip g remains in the book, the binding of which is therefore unaffected. The removed leaves are assembled in a loose-leaf cover in register by using the gauge marks c. The leaves may be printed on one or both sides.
Patent GB-442495-A (GB)
Title: Accumulator hand-lamp, particularly miner's lamp
IPC: F21L4/00
Filed: 1934-05-03
Abstract: 442,495. Electric c switches. RUDOLPH, G., 189, Uckendorferstrasse, Gelsenkirchen, Germany. May 3, 1934, No. 13399. Void [Abridged as open to inspection under Sect. 91 of the Acts, Nov. 27, 1934]. [Class 38 (v)] [See also Group XI] A portable hand lamp with an accumulator as the source of current is provided with an adjustable resistance in series with a lamp bulb which lights at the lowest discharge voltage of the accumulator. The re - sistance may be arranged within either the upper or lower part of the lamp, and may be adjusted either manually or automatically. An automatic adjustment comprises a liquid resistance 15 within a container 16 mounted upon the core 14 of a solenoid 13 which is connected in series with the lamp filament through two diverging rods 17, 18 which dip into the liquid 15. The rods 17, 18 remain stationary, while a helical spring 21 disposed between a fixed bracket 20 and the bottom of the container 16 tends to raise the latter in opposition to the solenoid. As the accumulator voltage falls the container 16 is lifted to increase the depth of immersion of the rods 17, 18 and thereby reduce the resistance.
Patent GB-710038-A (GB)
Title: Improvements in and relating to crosshead assemblies
IPC: F16C5/00
Filed: 1952-05-28
Abstract: 710,038. Crossheads and guides. UNITED STATES STEEL CORPORATION. May 28, 1952, No. 13527/52. Class 122(1) A reciprocable mechanism comprises a housing 16 providing pairs of integral outside bottom guides 26 and top guides 27, an intermediate bottom guide 26, an opening between the top guides 27, a cover plate 28 removably attached to the housing 16 over the opening and an intermediate top guide 23 integral with or secured to webs 30, 31 integral with the plate 28. The plate 28 may be of light metal with a bearing shoe of wear resisting metal secured thereto. The guides 26. 27 may also have removable bearing shoes. The crossheads 15 comprise side plates 21, 22 with top and bottom plates 23, 24 welded thereto and bearing shoes 25 bolted to the plates 23, 24
Patent GB-135422-A (GB)
IPC: A47J43/22
Abstract: 135,422. Adair, F. N. C. April 30, 1919. Strainers having sheet straining-materials. - A strainer for cooked vegetables and the like comprises a semicircular flat perforated plate C, with a flange H to engage the rim of the saucepan, and a handle D at one corner. As shown, the straight edge of the plate is spun round the wire D, but the wire may be carried round the curved edge. and the straight edge doubled over.
Patent GB-1009334-A (GB)
Title: Improvements relating to relays
Inventor: DOUGHTY ROY LESLIE
IPC: H01H50/54
Filed: 1961-04-14
Abstract: 1,009,334. Electromagnetic relays. HONEYWELL CONTROLS Ltd. April 16, 1962 [April 14, 1961], No. 13618/61. Heading H2B. The armature 9 of an electromagnetic relay is permanently in engagement with the operating plungers 20, 21 of microswitches 16, 17 and is retained in the position to which it was last actuated by the resultant force of the two microswitches. The armature engages the plungers 20, 21, through adjustable stops 22, 23 and is attracted to one of its two stable positions by energization of one of the two coils 11, 12. The force biasing the armature into its end positions may be increased by using a plurality of microswitches at both ends of the centrally pivoted armature. The microswitches do not necessarily act as the relay contacts.
Patent GB-808632-A (GB)
Title: Improvements in and relating to glazing clips
Inventor: HIBBS GUY SAMUEL
IPC: E06B3/60
Filed: 1956-05-02
Abstract: 808,632. Glazing clip. IMHOF Ltd., A. May 2, 1956, No. 13620/56. Class 20(3) A spring metal glazing clip device for attaching two panels G to an edging strip S having an interior groove bounded by inset ribs 2 and glazing flanges 3, comprises two spring back type clip elements 5, 6, the element 5 having arms 8 which are adapted to spring into position behind the inset sides of the groove and .have their outer ends 10, 10<SP>1</SP> bearing against the glazing G, and the other element 6, in the form of a spring bow with inturned ends 12, being sprung into position between the arms 8 to hold them against contraction.
Patent GB-593520-A (GB)
Title: Improvements in and relating to the fixing of handles and other fittings to pottery articles
IPC: B28B11/02
Filed: 1945-05-31
Abstract: 593,520. Attaching handles &c. to pottery articles. STRASSER, H. May 31, 1945, No. 13640. [Class 87(i)] A machine for fitting handles or other appendages to cups or other pottery articles comprises arms 40, 17 carrying, respectively, chucks 38 for the cups and cradles 25 for the handles, and continuously rotated in unison by a vertical shaft 11. As shown, four arms 17 and four arms 40 are provided. Each arm 17 is hinged at 20 so that its outer portion normally falls to the position shown, and is provided with a roller 32. During rotation of the arms, each arm 17 in turn is straightened by its roller 32 riding up a ramp 33. This action presses the handle against the corresponding cup. The highest portion of the ramp is constituted by a pneumatic tyre 34, so that the pressure of the handle on the cup is yielding. The outer ends of all the arms are adjustable angularly by means of dowels and set screws 22, 43, and the chucks and cradles are carried by brackets 39, 24 adjustable lengthwise and heightwise of the arms. Several chucks of different form may be carried by a frame rotatable on the end of each arm 40. The arms 23, 40 are adjustable heightwise of the shaft 11, which is rotated slowly by a motor 14 and reduction gear. Each cradle comprises a rubber block 26 held upwardly in a frame 25 by a light spring 30. The block and frame meet on inclined surfaces 26a, so that pressure of the handle 27 against a cup compresses the block so that it grips the handle and holds it against distortion.
Patent GB-567695-A (GB)
Title: Method of treating photo-printing materials to prevent slipping
IPC: G03C1/76
Filed: 1943-08-21
Abstract: 567,695. Photographic sensitive materials. MURRAY, H. D. Aug. 21, 1943, Nos. 13663/43 and 3937/44. [Class 98 (ii)] A resin, other than a hard resin of high melting point (e.g. colophony, gum mastic, gum sandarac, or a phenol-formaldehyde resin), is applied to the back of photographic printing materials, before or after sensitizing, to prevent slipping on carrier bands of photographic printing-machines. The support may be tracing cloth, which may have been treated with starch or another filler, cellulose acetate, or regenerated cellulose. A solution of a resin in a non-aqueous solvent (e.g. a solution of gum mastic in alcohol) may be sprayed on to the back of the support. In modifications, the finely powdered resin may be rubbed into the back of the support, or a finely-divided suspension of the resin in water may be applied by rolling, dipping, or spraying. The suspension may contain a binder such as casein, gum arabic, or gelatine. One such suspension is prepared by adding a solution of gum mastic in industrial spirit to an aqueous solution of gum arabic. Another suspension is prepared by adding the solution prepared by boiling colophony with dilute caustic soda solution to an aqueous solution of sodium or ammonium caseinate. Reference has been directed by the Comptroller to Specifications 3605/00, 17471/01, 13472/04, 25922/05, [all in Class 98], 2622/14, 205,828, 324,340, [all in Class 98 (ii)], and 411,689.
Patent GB-953496-A (GB)
Title: Novel quaternary ammonium compounds and liquid cationic textile softener compositions containing them
IPC: D06M13/405
Filed: 1962-04-10
Abstract: The invention comprises compounds of the formula: [(R11NHCnH2n)2NRR1]+ X-, where R is C1-4 alkyl, R1 is alkyl or aralkyl having up to 8 carbon atoms, R11 is the acyl radical of a normally liquid fatty acid having 13-23 carbon atoms, n is 2-4, and X- is an anion; and their production by reacting the fatty acid R11OH (or a natural source thereof) with a polyamine RN(CnH2nNH2)2, and quaternizing the resulting diamide with R 1X.  Specified acids are oleic, ricinoleic and linoleic acids; specified natural sources of such acids are soybean, tall, olive, castor, corn, cottonseed, grapeseed, hempseed, peanut, safflower, sesame and sunflower oil; specified polyamines are N,N-bis(aminopropyl) methylamine, N,N-bis(aminoethyl) butylamine and N,N-bis(aminobutyl) ethylamine; specified quaternating agents are dimethyl sulphate, diethyl sulphate, methyl chloride, ethyl bromide, benzyl chloride and methyl p-toluenesulphonate. If the final products are darker than desired they may be bleached with hydrogen peroxide at 100 DEG C.  The compounds of the invention are textile softening agents (see Division D1).ALSO:Textile softening concentrates comprise a compound of the formula [(R11NHCnH2n)2NRR1]+X-, where R is C1-4 alkyl, R1 is alkyl or aralkyl having up to 8 carbon atoms, R11 is the acyl radical of a normally liquid fatty acid having 13-23 carbon atoms, n is 2-4 and X- is an anion (see Division C2), together with from 5 to 55% by weight of said compound of a water-soluble glycol or polyglycol of molecular weight not greater than 300, an alkanol of up to 4 carbon atoms or a mixture of such an alkanol with water, the alkanol amounting to at least 50% by weight of the water-alkanol mixture.  If a non-aqueous solvent is used the concentrates may be added to the aqueous bath in a water-soluble packet, e.g. one made of polyvinyl alcohol or carboxymethyl cellulose.
Patent GB-688052-A (GB)
Title: Improvements in or relating to the manufacture and construction of press tools
Inventor: CARSTAIRS LINDSAY STEVEN
IPC: B21D37/10
Filed: 1950-06-01
Abstract: 688,052. Trimming &c. dies. COMPOSITE FORGINGS, Ltd. May 23, 1951 [June 1, 1950], No. 13728/50. Classes 83 (ii) and 83 (iv). In a method of making a part for a press tool comprising a composite element which includes a cutting or forming component and a supporting component, the former of a material which is capable of being hardened by heat treatment of the composite element while the supporting component remains soft, the components are flame cut using as a template a full-size drawing, preheated and joined by a process involving the fusion together of the components, for example flash butt welded. A die, Figs. 8, 9, for trimming large pressed work-pieces such as the wings of motor vehicles, is made up of a plurality of said elements, examples of which are shown in Figs. 1-5 (not shown) and Figs. 6 and 7, the cutting components 23 being united, preferably by flash butt welding, to the supporting components 22 and the cutting components overhanging the supporting component at the ends and along the cutting edge. A cast base 26 for the complete die is formed with a plurality of horizontal element-receiving surfaces 26a, 26b, &c. The composite elements are then premachined, fixed to the base by screws 27, finish machined, removed from the base and heat-treated to harden the cutting component. On reassembly and after final adjustment, dowel holes are drilled and reamed and dowels 28 inserted. The composite elements should preferably not be longer than twelve inches and preferred sizes and clearances are given.