baber/WOPTO huggingface dataset:
Patent GB-667408-A (GB)
Title: Improvements in or relating to the recovery of alkyllead compounds from the reaction mass resulting from their synthesis
IPC: C07F7/24
Filed: 1949-07-19
Abstract: An alkyl lead compound in which the four lead valencies are satisfied by hydrocarbon radicals is recovered from the reaction mass resulting from its synthesis by steam distilling the reaction mass in the presence of an aqueous solution of an iron salt.  The iron salt may be used in a quantity containing iron equivalent to from 0.01 to 0.12 per cent by weight of the lead contained in the reaction product and preferably between 0.06 and 0.12 per cent. The steam distillation may be carried out in the presence of an aqueous solution of an iron salt and sodium thiosulphate, e.g. the iron salt may be used in a quantity containing iron equivalent to between 0.003 and 0.12 per cent by weight of the lead present in the reaction product and preferably between 0.003 and 0.06 per cent, the sodium thiosulphate being present in an amount equivalent to between 0.01 and 0.8 per cent by weight of the lead contained in the reaction product.  The iron salt may be a nitrate, chloride, sulphate or lactate of iron or a mixture thereof.  Double salts such as ferric ammonium oxalate are also suitable as well as any ferric or ferrous salt of an inorganic or organic salt.  In the examples a reaction mass containing tetraethyl lead is treated with aqueous ferric chloride alone and in admixture with sodium thiosulphate.  Tetramethyl-, tetrapropyl-, di-methyldiethyl- and trimethylphenyl-lead may be recovered by the above process.
Patent GB-888709-A (GB)
Title: Cocrystallized vanadium-titanium catalyst components
IPC: C08F4/20
Filed: 1960-05-30
Abstract: A cocrystallized Ti/V/A1 catalyst component corresponding to the formula y TiX3. (1-y)VX3. 0.33 Al X3 wherein X is halogen and y is 0,50 to 0,97 may be prepared by (a) adding a titanium halide and a vanadium halide to an aluminium slurry in an aromatic diluent (preferably toluene but other aromatic hydrocarbons and chlorinated hydrocarbons are mentioned) at a minimum temperature of 80 DEG C. and continuing the reaction for a period of from 0,5 to 20 hours, or (b) reacting a titanium halide, a vanadium halide and aluminium in a bomb at 200 DEG -400 DEG C. for 0,5-10 hours.  The preferred halides are TiCl4 and VCl4.  In specific instances the cocrystallized component has the above formula, in which X=Cl and y=0,5 or 0,67. Specification 810,023 is referred to.ALSO:A C2-6 a -olefin, preferably propylene, is polymerized with a catalyst comprising an aluminium alkyl component (e.g. AlEt3) admixed with a cocrystallized Ti/V/Al component corresponding to the formula <FORM:0888709/IV (a)/1> wherein X is halogen and y is 0,50 to 0,97.  The cocrystallized component may be prepared by (a) adding a titanium halide and a vanadium halide to an aluminium slurry in an aromatic diluent (preferably toluene but other aromatic hydrocarbons and chlorinated hydrocarbons are mentioned) at a minimum temperature of 80 DEG C. and continuing the reaction for a period of from 0,5 to 20 hours, or (b) reacting a titanium halide, a vanadium halide and aluminium in a bomb at 200 DEG -400 DEG C. for 0,5-10 hours.  The preferred halides are TiCl4 and VCl4.  In specific instances the cocrystallized component has the above formula, in which X=Cl and y=0,5 or 0,67. Specification 810,023 is referred to.
Patent GB-322763-A (GB)
Title: Method of manufacturing cellulose
IPC: D21C3/26
Filed: 1928-06-30
Abstract: 322,763. La Roza, J. J. de. June 30, 1928. Pulp, preparation of; preliminary treatment of materials.-In the production of cellulose from sugar cane fibre, the fibre is treated with a dilute solution of sulphurous acid e.g. an aqueous solution containing 4-5 per cent of sulphur dioxide, in order to inhibit the growth of fungi and spontaneous injury to the fibre. Preferably the fibre is crushed and washed in hot water before treatment with sulphurous acid while the succeeding alkaline treatment may follow immediately or the material may be stored for several months according to circumstances. Subsequent to the acid treatment, the fibre is washed in hot water and treated with a dilute solution of potassium or sodium hydroxide under pressure at from 140- 174‹ C. It is finally washed and bleached. Alternatively the alkali may be at atmospheric pressure and below 100‹ C., the fibrous material being subsequently beaten in a pulping-engine.
Patent GB-935496-A (GB)
Title: Carbon electrode manufacture
Inventor: HUNT LELAND FRANCIS
IPC: C25C3/12
Filed: 1960-05-30
Abstract: A prebaked or self-baking Soderberg carbon electrode is produced by mixing a coke charge with a carbonaceous binder and baking the resultant mixture, at least a portion of the coke being petroleum coke of sufficiently high sulphur content to form an electrode containing more than 1 3/4 % by weight of sulphur. The coke may be delayed coke or fluid coke and preferably produces an electrode containing 2-6% by weight of sulphur.
Patent GB-1452243-A (GB)
Title: Process and apparatus for the production of viscose
IPC: C08B9/00
Filed: 1975-05-07
Abstract: 1452243 Mixing pulverulent materials E I DU PONT DE NEMOURS & CO 7 May 1975 [8 May 1974] 19174/75 Addition to 1421812 Heading B1C [Also in Division C3] Two or more materials are mixed in a dispersion device which suspends them in air. One material, in the form of a dust, is introduced by screw conveyor 1 into the dispersion chamber 2. Shaft 3 is rotated at sufficient speed for the propellers 4, 4a to suck ambient air in through the screw conveyor or other holes and for the propellers and the solid disc 5 to keep the dust trapped between them and agitated until the point is reached where the space contains so much dust that it spills over and is dispersed by vanes 6 into chamber 7 as a swirling sloud. The other material is fed down chute 8 into chamber 7 and so crosses the path of the descending dust cloud arid mixes intimately with it. The mixture settles into holding tank 9 and is continuously removed through rotary air lock 10 and conveyed by air to its destination.
Patent GB-758290-A (GB)
Title: Improvements in or relating to typewriters or like machines
IPC: B41J33/26
Filed: 1954-06-30
Abstract: 758,290. Typewriters. SIEMAG FEINMEUHANISCHE WERKE GES. June 30, 1954 [July 4, 1953; March 5, 1954], No 19179/54. Class 100 (4). An ink-ribbon mechanism for a typewriter is so constructed that in addition to handling an ordinary ink-ribbon it can advance a narrow paper ink-ribbon which is discarded after one use. The existing spool mounting 18 on the typewriter is fitted with a ribbon spool 1 which has therein a friction roller 3 of diameter slightly less than that of the flanges of the spool and a spring urged brake lever 8 presses the paper ink-ribbon 4 into contact with this roller. The brake lever 8 has an aperture 9 through which the ribbon is fed to the roller 3 and has a U-shaped guiding channel 23 which leads the ribbon away to waste. The ribbon is drawn through a ribbon fork 17 which has two pairs of slots 24 and 25 which guides either the narrow paper ink-ribbon or the ordinary ink-ribbon respectively, the paper ink-ribbon being guided through guiding slot 16 in an upwardly extending flange 15 from a supply spool 10 attached to the side of the typewriter.
Patent GB-1412210-A (GB)
Title: Temperature controlled fluid manifold for an automated fluid analyser
IPC: B01L7/00
Filed: 1973-04-24
Abstract: 1412210 Liquid heaters TECHNICON INSTRUMENT CORP 24 April 1973 [7 June 1972] 19466/73 Heading F4A [Also in Division G1] In a temperature controlled fluid manifold for an automated fluid-analyzer (e.g. a bloodsampling unit) a heater plate 14 of good thermal conductivity is mounted on a thermally insulated support 10 and at least one passageway portion 24, 26 is encapsulated in a heat retaining material secured to the heater plate 14 so that heat is transfered by conduction from the plate to the material and a cover 18 extends with clearance over the passageway portions 24, 26 to prevent loss of heat by convection. A thermostatically-controlled heater 18 regulates the heating to the plate 14 to control the temperature of the manifold to approximately 37F. As shown in Figure 1 there are two fluid passageway portions 24 and 26 made of glass and encapsulated in lead. Two fluid analyzers 48, 62 supported on the heater plate 14 are in fluid communication with each other. Utilising optical fibre assemblies 54 and 56, the stream of fluid in the passage 50 of the flow coil 48 is analyzed colorimetrically or by a spectral flame photometer at a location remote from the manifold and the signal from the colorimeter (not shown) is suitably displayed A similar optical fibre assembly 64, 66 is associated with the other fluid analyzer 62.
Patent GB-1210468-A (GB)
Title: Piezoelectric ceramic material
Inventor: WATANABE HIDEO
IPC: C04B35/48
Filed: 1968-04-24
Abstract: 1,210,468. Piezoelectric ceramics. TDK ELECTRONICS CO. Ltd. 24 April, 1968, No. 19491/68. Heading G1J. A piezoelectric ceramic consists of 0.1 to 1À5% of WO 3 , 0À05 to 0À5% of Cr 2 O 3 , and a plurality of piezo-electric oxides based mainly on a lead titanozirconate.
Patent GB-274894-A (GB)
Title: Manufacture of carboxylic acids of acenaphthene
IPC: C07C51/29
Filed: 1927-07-22
Abstract: 274,894. I. G. Farbenindustrie Akt.- Ges. July 24, 1926, [Convention date]. Acenaphthene carboxylic acids: chloroform. - Acenaphthene carboxylic acids are obtained by treating acetyl-, diacetyl-, chloracetyl-, or di(chloracetyl)-acenaphthene or a substitution product of any of them with an alkaline hypochlorite solution, chloroform being eliminated. In an example, 5-chloracetylacenaphthene or 5- acetylacenaphthene is heated with an excess of alkaline hypochlorite solution, and, on cooling, the sodium salt of 5-acenaphthenecarboxylic acid separates. An acenaphthenedicarboxylic acid is obtained from the di(chloracetyl)acenaphthene produced from acenaphthene and 2 molecular proportions of chloracetylchloride, or by condensation of 5-chloracetylacenaphthene with chloracetylchloride. In the same way, 5-bromo-6- acenaphthenecarboxylic acid may be prepared from 5-bromo-6-acetylacenaphthene, obtained by bromination of acetylacenaphthene in presence of chloroform.
Patent GB-1491568-A (GB)
Title: Method of manufacturing a magnetisable layer
IPC: H01F41/14
Filed: 1975-05-09
Abstract: 1491568 Ferrite layers PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 9 May 1975 [13 May 1974] 19628/75 Heading C1J A magnetizable layer suitable for a magnetic domain device is manufactured by depositing a monocrystalline layer of a ferrite having the composition where 0À2#x#0À1 and 1À5#y#1À0, on a monocrystalline substrate body, depositing an SiO-containing layer on the ferrite layer and maintaining the ferrite layer during and/or after the second deposition at 300 C. to 600 C. for a time sufficient for ion transport between the SiO-containing and ferrite layers to occur and provide the ferrite layer with two constituent parts having compensation temperatures on opposite sides of room temperature. The SiO-containing layer is defined as a layer consisting of SiO and Si or a layer consisting of SiO and SiO 2  or a layer consisting of SiO, Si and SiO 2 .
Patent GB-361940-A (GB)
Title: Improvements in and relating to belt drives
IPC: F16H7/02
Filed: 1930-06-27
Abstract: 361,940. Belt gearing. FRANZ CLOUTH RHEINISCHE GUMMIWARENFABRIK AKT.-GES., 102, Niehlerstrasse, Nippes, Cologne, and ISBEG INDUSTRIEUND SCHIFFSBEDARF GES., 40, Linkstrasse, Berlin, both in Germany. June 27, 1930, No. 19647. Convention date, June 27, 1929. [Class 80 (i).] A V or flat belt, Fig. 3, is passed once around a pulley b<1>, three or more times around a pulley a<1>, and once less around an auxiliary pulley c<1>, which may or may not lie between the driving and driven pulleys a<1>, b<1>. As shown in Fig. 2, the intermediate pulley c, which has a single groove for cooperation with a pulley a having two grooves, i s additionally connected to the pulley a by a chain, belt, &c. drive h. The shaft of the pulley c may supply power and may be adjustable by sliding or rocking. The belt may be crossed. The functions of the three pulleys may be interchanged. For transmitting greater power, several such belt systems working in parallel may be used.
Patent GB-276318-A (GB)
Title: Improvements in or relating to bottle closures
IPC: B65D41/12
Filed: 1927-07-25
Abstract: 276,318. Armstrong Cork Co., (Assignees of Busch, H. F.). Aug. 18, 1926, [Convention date]. Packing discs for stoppers; making packing discs. -A bottle closure comprises a metal or other cap, and a compressed artificial cork packing disc or liner formed in situ and set therein, the artificial cork containing a, binder capable of being set by heat. In forming the disc. its centre portion is more highly compressed than its peripheral portion. A crown cork ' shell 1 is held on a support 5 by a tube 6, the tube and shell being filled with an artificial cork mix 9 which includes an elastic binder. A plunger 10 formed with a projecting centre portion 11 compresses the material 9 into the cap and the cap and the disc are heated to set the binder which also unites the disc to the shell. A covering of metal foil or thin paper 20, Fig. 7, may be provided on the disc. A suitable cork composition comprises 100 lbs of granulated cork, 10 lbs of glycerine, 5 lbs of gelatine, and 20 ozs of formaldehyde. Specification 245,748, [Class 42 (ii), Fabrics, Treating otherwise &c.], is referred to.
Patent GB-1165615-A (GB)
Title: Refractory Dolomitic Blocks and a Method for Using the said Blocks in the Manufacture of Refractory Linings for Metallurgical Furnaces.
IPC: C04B35/03
Filed: 1967-04-28
Abstract: 1,165,615. Refractory blocks. CENTRE NATIONAL DE RECHERCHES METALLURGIQUES. 28 April, 1967 [29 April, 1966], No. 19741/67. Heading F4B. A dolomitic block, with an inserted reticular metallic framework, formed by the ultrasonic tamping of granulated dolomite with a tar binder, is provided with a metal screening plate of one millimeter thickness covering its hot end face, and has elements, which may be integral with the framework, for securing the screening plate to the refractory mass of the block. The blocks are used for lining the roofs, floors and walls of electric, rotary, shaft and open hearth furnaces, pneumatic converters and mixers. The blocks are fired in position in the furnace at 2500‹ C. with an oxy-acetylene flame provided with excess oxygen to combust any tar vapours released. The screening plate which is destroyed during firing, prevents disintegration of the blocks before a creep preventing surface crust can be formed.
Patent GB-422480-A (GB)
Title: Improvements in and relating to photo-electric relay apparatus
IPC: H01H47/24
Filed: 1933-07-12
Abstract: 422,480. Switching systems for consuming devices. BRITISH THOMSONHOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Cockrell, W. D. ; 1021, Parkwood Boulevard, Schenectady, New York, U.S.A.) July 12, 1933, No. 19762. Convention date, July 13, 1932. [Class 38 (iv)] [See also Group XL] A switch system controlled by a photo-electric cell is rendered insensitive to momentary changes of illumination of the cell by the inclusion of a thermal responsive time-delay device. A photo-electric cell 1 is in the grid circuit of a valve 2 whose anode circuit includes a relay 3, which closes the circuit of a thermal time-delay switch 24 in series with a relay 4. Momentary illumination of the cell does not allow the thermal switch 24 to operate, but prolonged illumination allows the heat from resistance 24 to cause the bimetallic strip 26 to close its contacts and short circuit the resistance 24 to energize relay 4 which holds on over contacts 27, closes contacts 28 of the control circuit 5, and also closes contacts 21 to connect the grid of valve 2 to potentiometer 10 over resistance 18 and so change its grid bias. The relay 3 is then de-energized at a different illumination of the cell 1 from that required to energize the relay 3. When relay 3 is de-energized, the thermal delay switch 24 is connected in parallel with the winding of relay 4 to short circuit the winding when the bimetallic strip closes its contacts and so release the relay 4. In a modification (Fig. 2, not shown), the system is operated with alternating current. Reference has been directed by the Comptroller to Specification 402,045, [Group XL].
Patent GB-734643-A (GB)
Title: Embossing roll and method and means for making the same
IPC: G03B21/60
Filed: 1953-07-17
Abstract: 734,643. Making embossing rolls. TRIGGS, W. W. (Grote Manufacturing Co.). July 17, 1953, No. 19900/53. Classes 83 (2) and 83 (4). Embossing.-A method of forming a metal roll for embossing a continuous strip of optically homogeneous material to form lenticular protuberances, thereon comprises supplying a plurality of smooth-surfaced glass beads to a part of the roll surface, arranging said beads into formations and pressing each formation successively into engagement with the roll surface while rotating the roll to form cavities therein said cavities producing the protuberances on the strip of material upon action of the roll on the material. A stainless steel roll 10 is mounted in a lathe and rotated. A carriage 12 is driven along ways 13 parallel to the axis of the roll by a worm screw 14. A frame 15 mounted on the carriage comprises upper and lower plates 16 and 17 between;which is clamped a hydraulic cylinder the ends of which are telescoped in head blocks 21 and 22. The piston rod 24 of the cylinder is connected to a cross plate 25 which carries a pair of spaced brackets 26, each provided with a guide bar 27 which slides in ways 29 secured to the plate 17. The brackets 26 carry a shaft 30 on which is mounted a roller 31 the edges of which are recessed as at 33 to receive rubber rings 34 which extend above the roll surface. A funnel comprising side walls 37 and front and rear walls 38 and 39 respectively is adjustably supported on a standard .40 fixed on one of the brackets 26. The funnel has a narrow discharge slot 45 at the bite of the roll 10 and roller 31 and the edges of the side walls 37 ride on the rubber rings 34. In operation the roll 10 is rotated and the roller 31, which is given a lead angle 46 is pressed against the surface of the roll 10 and glass beads are fed to the funnel and pass in a constant layer of one bead thickness between the roll and roller and are pressed into the surface of the roll so that the flowing beads emboss a helical contiguous or slightly overlapping band over the entire surface of the roll with lens forming depressions of an average range of 0.0024 to 0.003 of an inch radius.
Patent GB-478433-A (GB)
Title: Method of sewing a tape to a garment to form a crease
IPC: D05B1/24
Filed: 1936-07-18
Abstract: 478,433. Sewing-machines. SEGELIN, D., and SEGELIN, S. July 18, 1936, No. 19985. Convention date, July 19, 1935. [Class 112] A permanent crease is formed in a garment by sewing one side of a tape 1 to one side and parallel to the line of the crease and then depressing the garment below the central portion of the tape by means of a wire 2 while sewing the other side of the tape to the garment. The sewing may be done in a blind stitching machine in which the work bender 4 raises the garment against the tape during the stitching.
Patent GB-186751-A (GB)
Title: Improved construction of feed water regulator for steam boilers, generators and the like
IPC: F22D5/10
Filed: 1921-07-26
Abstract: 186,751. Thompson, E. G. July 20, 1921. Feed-water, regulating.-A feed-water supply regulator comprises a balanced float D in a chamber A in free communication with the boiler, a steam chamber E opening into the top of the chamber A, and a valve G in the steam chamber operated by the float and controlling the steam inlet and outlet ports of a cylinder F which contains a piston L connected through rods and levers to the feed-valve P. A spring M around the stem of the feed-valve acts to maintain the valve in its open position, the valve being closed by the pressure of the steam admitted to the cylinder L when the water-level in the boiler rises.
Patent GB-852167-A (GB)
Title: Improvements in tension lock-up devices for plate cylinder printing machines
IPC: B41F27/10
Filed: 1958-06-24
Abstract: 852,167. Printing surfaces. WOOD NEWSPAPER MACHINERY CORPORATION. June 24, 1958 [March 31, 1958], No. 20181/58. Class 100(2). A device for securing a stereotype printing plate to a printing cylinder by plate tensioning fingers, the fingers being operated by a member which is rotatable and movable along its longitudinal axis, includes means for exerting a predetermined minimum of pressure of the fingers independent of rotation of the operating member beyond a predetermined position. The printing cylinder A is provided with four pairs of longitudinally adjacent printing plates as 1, 11 and 2, 21 Fig. 2). The plates have recesses 5, 5<SP>1</SP> for receiving plate engaging fingers. The plates 2, 21 are engaged by fingers 6, 20<SP>1</SP> and the plates 1, 1<SP>1</SP> by fingers 10, 41<SP>1</SP> operated from one end of the cylinder A, the remaining four plates being engaged by fingers operated from the other end of the cylinder. The fingers 6 for one edge of plate 2 are mounted on a shaft 7 (Fig. 4) integral with a lug 8, the fingers 6 being positioned by adjustment of set screws 9, 9<SP>1</SP> Similar fingers 10 mounted on a hollow shaft 11 surrounding shaft 7 and adjusted by similar set-screws, are provided for engaging one edge of plate 1. The fingers 201 for engaging one edge of plate 21 are attached to a shaft 211 on which is mounted a gear 22<SP>1</SP>. Gear 221 meshes with a worm gear 241 on a member 23<SP>1</SP> rotatably mounted in thrust bearings 29<SP>1</SP>, 30<SP>1</SP>. A spring 251 acting between plug 271 and collar 261 urges the member 231 to the right as viewed in Fig. 4. The member 231 has a portion 311 on which a handle may be' fitted. Rotation of the member 231 initially causes rotation of fingers 20<SP>1</SP> to clamp the plate 21 on the cylinder but after a predetermined pressure is exerted by the fingers 201 further rotation of member 231 causes compression of spring 251. The spring serves to take up any wear in the recesses 51 and to ensure a predetermined minimum pressure being exerted by the fingers on the plate. Similar fingers 411 are provided on a hollow shaft 401 surrounding the shaft 211 which, is provided with a gear 431 for co-operation with a further worm gear and spring biased shaft. The edges of plates 1 and 2 remote from the fingers 10 and 6 are similarly engaged, whilst fingers similar to fingers 10 and 6 are provided for the other edges of plates 11 and 21.
Patent GB-1267346-A (GB)
Title: Improvements relating to electric capacitors
Inventor: PURSE JOHN WILLIAMS
IPC: H01G4/245
Filed: 1968-04-29
Abstract: 1,267,346. Capacitors. PLESSEY CO. Ltd. 15 May, 1969 [29 April, 1968], No. 20182/68. Heading HIM. Lead 2 has a relatively flexible flat portion 4 part of which is in contact with an electrode foil in capacitor roll 1 and a relatively rigid round. portion 5, the part of flat portion 4 extending from the roll.beingbent aoross the end face of the roll and then again at right-angles, where it joins the round portion. Preferably the length of the extending part of the flat portion equals the radial distance to the roll at the point of emergence, providing- an axial lead for passing through the closure plug of the encased capacitor (Fig. 2, not shown).