baber/WOPTO huggingface dataset:
Patent GB-581579-A (GB)
Title: Improvements in causticisation of green liquor produced in the alkaline processes of the manufacture of paper pulp
IPC: D21C11/00
Filed: 1944-04-11
Abstract: 581,579. Electrolytic recovery of caustic soda. ASSOCIATED PULP & PAPER MILLS, Ltd. April 11, 1944, Nos. 6683 and 6684. Convention dates, April 27, 1943, and May 19, 1943. [Class 41] Caustic soda is recovered by electrolysis from the green liquor obtained by dissolving in water the sodium carbonate formed when black liquor is evaporated and burnt. The electrolysis is preferably performed in a mercury-type cell, although diaphragm-type cells may be used. The green liquor is passed through a separator, Fig. 1 (not shown), to remove suspended solids and is then introduced into the primary compartment of a mercury cell.' The liquor decomposes, giving carbon dioxide at the anode and sodium at the cathode, the sodium immediately forming an amalgam with the mercury. The amalgam passes to the secondary compartment where the sodium forms caustic soda upon reacting with the electrolyte from the primary cell. This electrolyte is only partially denuded of soda in order to keep the current efficiency high, and may alternatively, Fig. 2 (not shown), be returned to the dissolvers, water being used in its place in the secondary cell. Fig. 3 (not shown) illustrates a modification in which part of the black liquor is passed to the secondary cell to regenerate the caustic soda. Where electrolytic cells are used, Fig. 5, the electrolysis may be controlled to remove only about 50 per cent. of the soda, in which case the effluent is evaporated to produce crystals which are filtered and passed back to the dissolvers. If the " sulphate " process is used, Fig. 6, hydrogen sulphide is also given off at the anode, the mixture of gases being passed into an absorption tower where the hydrogen sulphide is absorbed in a solvent from which it is easily regenerated. The hydrogen sulphide then passes to a second absorption tower where it is mixed with the caustic solution to produce the digested liquor for the wood-pulping operation. Other methods of separating the hydrogen sulphide from the'carbon dioxide together with examples of voltage, current density, and composition of anodes,and electrolytes, are given.
Patent GB-871409-A (GB)
Title: C-shaped hook for handling coils of sheet metal or metal wire
IPC: B21C47/24
Filed: 1959-02-26
Abstract: 871,409. Lifting cradles. ATELIERS HEUZE, MALEVEZ ET SIMON REUNIS S.A. Feb. 26, 1959 [March 26, 1958], No. 6733/59. Class 78 (4). A C-shaped cradle for supporting a coil 2 is suspended in such a way that its supporting arm 1 remains horizontal whether or not the cradle is loaded. The cradle is suspended from a shackle 9 by a linkage 7, 12, 13 biased by a compression-spring 10 so that when loaded it assumes the configuration shown in full lines but when unloaded it assumes the configuration shown in broken lines; in the first configuration the shackle 9 is immediately above the centre of gravity of the cradle and its load, while in the second configuration the shackle is immediately above the centre of gravity of the cradle alone.
Patent GB-1197951-A (GB)
Title: Improvements in and relating to Water Seal Traps
Inventor: MCALPINE KENNETH BARBOUR
IPC: E03C1/284
Filed: 1967-02-13
Abstract: 1,197,951. Traps for sinks, basins and the like. K. B. McALPINE. 14 Nov., 1967 [13 Feb., 1967], No. 6734/67. Heading E1C. A U-trap for sinks, basins &c. comprises an elbow branch 5 coupled to the outlet leg 4 of the U-bend, this branch being outwardly and downwardly directed at its discharge end and terminating in an outlet the open end of which lies in a plane which is about 45‹ to the axis of the outlet leg of the trap and to which is removably or adjustably secured a coupling branch 6 for connection to the waste pipe, the coupling branch being curved adjacent its inlet end so that the open end of its inlet lies in a plane about 45‹ to the axis of the remainder of the coupling branch, the construction being such that the coupling branch 6 can be connected to the elbow branch 5 to constitute, substantially a P-trap arrangement, shown in broken lines, or an S-trap arrangement, shown in full lines in Fig. 1.
Patent GB-496020-A (GB)
Title: Improvements in and relating to insulating liquids for electric apparatus
IPC: H01B3/24
Filed: 1938-03-04
Abstract: Chlorinated or fluorinated hydrocarbons are treated with fuller's earth which has been dried at 120 DEG  C., filtered, and stabilized by the addition of up to one part per thousand of benzyl cyanide. Specification 473,441 is referred to.
Patent GB-816226-A (GB)
Title: Improvements in or relating to television receivers
IPC: H04N5/57
Filed: 1956-03-05
Abstract: 816,226. Automatic gain control. GENERAL ELECTRIC CO. Ltd., and BOWN, G. C. S. March 5, 1957 [March 5, 1956], No. 6851/56. Class 40 (5). [Also in Group XL (b)] In a television receiver in which the black level of the signal output of the video amplifier 4 varies in accordance with the mean level of the signal (i.e. amplifier 4 enhances the -D.C. component with respect to the A.C. component) such a signal cannot be employed directly in an A.G.C. circuit 15 of the kind in which a control voltage is derived by measuring the height of the black level relative to the tips of the synchronizing pulses and it is first necessary to remove the D.C. component by means of capacitor 11 and then restore the normal D.C. component by means of the peak detection action of the grid-cathode circuit of the conventional synchronizing signal separator valve 12 before supplying the signal to circuit 15.
Patent GB-881074-A (GB)
Title: A method of producing an aqueous solution of high concentration of polyvinyl alcohol
IPC: C08J3/03
Filed: 1959-07-07
Abstract: Aqueous solutions of 35 to 65% concentration of polyvinyl alcohol are made by kneading mixtures of polyvinyl alcohol and water at 50 to 85 DEG  C., softening and forming the polyvinyl alcohol into small particles and subsequently supplying the mixture to a screw-type extruder.  The kneading step may be performed using a screw extruder and, after passing through the final screw extruder, the solution may be spun.
Patent GB-905853-A (GB)
Title: Improvements in or relating to solutions and processes for the production of phosphate coatings on metal surfaces
IPC: C23C22/23
Filed: 1960-02-26
Abstract: An aqueous solution for producing phosphate coatings on metal surfaces (particularly iron and steel) contains one or more coating metal phosphates, one or more "dehydrated" phosphates and a peroxide accelerator.  "Dehydrated" phosphates are defined as those salts of phosphorus-containing acids which have a lower water content than those derived from H3PO4 and in which there is no direct P-P linkage. The solution preferably contains 1-15 g./l. coating metal (e.g. zinc), at least 0.01 g./l. dehydrated phosphate (e.g. alkali metal or ammonium pyro-, hexameta-, tripoly- and tetrapoly-phosphates), and peroxide (calculated as H2O2) in a concentration of 1/30 th- 1/8 th of the concentration of coating metal. The peroxide may be introduced into the solution as hydrogen peroxide, or hydrogen peroxide may be generated in the solution by introducing percompounds (such as perphosphates, perborates and ammonium persulphate) together with an amount of acid to maintain constancy of pH value.  The solution is preferably supersaturated in respect of coating metal phosphate and possesses a pH value (stabilized by buffers such as sodium and/or zinc acetate) which exceeds that of equilibrium.  The phosphate coatings may be treated in chromic acid solution.
Patent GB-769318-A (GB)
Title: Improvements in or relating to agricultural implements adapted to be attached to tractors
IPC: A01B63/32
Filed: 1954-03-09
Abstract: 769,318. Invertible ploughs. BONNEL, H. A. March .9, 1954 [March 10, 1953], No. 6912/54. Class 6(1). Relates to tractor-drawn invertible ploughs of the kind wherein the tools 9a are carried by a longitudinal beam 7 forming part of a chassis which is mounted on power-operated lift-links 1 at its front end and is vertically adjustable upon a rear-carriage 13, 14, at its rear end. According to the invention, a cable 3 is connected between a fixed part 5 on the tractor and a part 16 on the rear-carriage which is in fixed relation to the ground, and this chain passes over idle pulleys 4a, 4b, on the chassis so that the chassis is moved bodily, while remaining horizontal, upon vertical movement of the lift links. In a modification, Fig. 3 (not shown) automatic side-swing of the implement upon raising is effected by a second cable connected between the fixed point on the tractor and a lever which rocks the tools, the cable. being passed around further pulleys on the chassis. The point 16 is vertically adjustable by a handoperated screw 15.
Patent GB-180446-A (GB)
Title: Improvements in strainers for milk, paint and other liquids
IPC: A01J11/06
Filed: 1921-03-03
Abstract: 180,446. Padmore, A. T. March 3, 1921. Funnel strainers.-In a strainer for milk, paint, &c. comprising a body portion 2 with a loose gauze disc 7 at the bottom, the disc 7 is fixed in a rim 8 which has a beaded flange at the top resting on a flange 5 of the part 2 and at the bottom is bent inwardly and closed over to support the gauze. The disc can be raised from its seating by turning a cranked wire 17 which is pivoted in a vertical ring 1 and extended at one end to form a handle. The lower part of the rim 8 projects downwards below the gauze, so that the wire 17 will not touch the gauze itself. The ring 1 is flanged at the top to engage with securing-flanges on the body part 2.
Patent GB-307292-A (GB)
Title: Improvements in or relating to coating compositions
IPC: C09D101/12
Filed: 1929-03-04
Abstract: 307,292. British Celanese, Ltd., (Assignees of Moss, W. H.). March 3, 1928, [Convention date]. Void [Published under Sect, 91 of the Acts]. Lacquers &c. are prepared by incorporating one or more cellulose derivatives, such as cellulose nitrate, or preferably organic esters and ethers, e.g. cellulose acetate, formate, &c., methyl, ethyl, or benzyl cellulose, one or more natural or semisynthetic resins, such as manila, accaroid, pontianak, kauri, dammar, rosin or shellac or an ester gum, such as the glyceryl ester of rosin, plasticizers, such as diethyl phthalate, tricresyl phosphate, triphenyl phosphate, amides, such as monomethyl toluenesulphonamide, triacetin, diphenylol propane, thiocarbanilide, &c., and a volatile solvent, for example ethyl acetate, ethyl lactate, tetrachlorethane, benzyl alcohol, diacetone alcohol, acetone, alcohol, benzene, or ethylene dichloride. Suitable pigments or dyes may also be added.
Patent GB-702767-A (GB)
Title: Improvements relating to pulley driving belts
IPC: F16G1/22
Filed: 1951-03-22
Abstract: 702,767. Driving-belts. OALZOLARI, R. March 22, 1951 [April 15, 1950], No. 6950/51. Class 80 (1) A flat or V-belt comprises two separate layers - a reinforced inner or base layer 1 having a high modulus of elasticity, and an outer layer 3 having a low modulus of elasticity, the two layers being interlocked by a central groove and by interfitting undulations which substantially prevent relative movement. The low modulus outer layer maintains the slack side of the inner layer in contact with its pulleys.
Patent GB-434597-A (GB)
Title: Improvements in and relating to electric discharge devices
IPC: H01J61/52
Filed: 1934-03-05
Abstract: 434,597. Discharge lamps. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London, and DAVIES, L. J., 147, Murray Road, Rugby. March 5, 1934, No. 6966. [Class 39 (i)] The ends 1, Fig. 1, of a high-pressure metal-vapour lamp consist of conical, hemispherical or saucershaped discs which are sealed directly to the tubular glass portion 2 and are formed of a metal which has a coefficient of expansion the same as that of the glass. A tungsten helical cathode 3, carried by the disc, supports a pellet of emissive material and comprises a relatively large turn 4 to facilitate heating by induced high-frequency currents. If the cathode is to be heated by the passage of current therethrough, the leading-in wire or disc is sealed into the disc 1 through a glass button. In another form, a starting electrode or a shield 7, Fig. 3, consisting of a ring or a perforated metal disc is sealed in above the cathode. A butt or a tapering feather-edge seal may be used. To maintain the disc 1 at a high temperature, it may extend to a point beyond the cathode.
Patent GB-367579-A (GB)
Title: Improvements in tanks for liquid fuel
IPC: B64D37/32
Filed: 1931-03-06
Abstract: 367,579. Tanks. BOOTHBY, F. L. M., 4, Woodvale, Cowes, Isle of Wight. March 6, 1931, No. 7056. [Class 69 (i).] A flexible fuel container 10 has an inner bag 12, which may be lined with goldbeater's skin, inert gas being admitted to and surrounding the container 10 ; an emergency relief valve, consisting of a plug 30 secured by a rubber band or metal spring 31, is provided. The container may be formed from layers of flexible material, separated by stretched or other rubber, or kapok, and is carried by alternate elastic and inelastic supports 26. A pressure-control valve 23 may be fitted.
Patent GB-724305-A (GB)
Title: A lounge chair
IPC: A47C1/032
Filed: 1953-03-16
Abstract: 724,305. Seats. LORENZ, A.' March 16, 1953 [April 30, 1952], No. 7182/53. Class 52(2). A lounge chair comprises side supports 10, a sitting structure 18 composed of a seat 20 and leg rest 22 rigid with one another, a back rest 14 pivoted at 16 to the supports 10 and at 24 to the rear end of the seat 20, at each side a controlling link 32 pivoted at 36 to the leg rest 22 and at 34 to a controlling member 26. The member 26 at each side which may be a disc is pivoted at 28 to a rod 30 rigidly carried by the support 10, and a guiding link 38 is pivoted to the seat at 42 and to the control member 26 at 40. In a modification, the support may comprise two foldable and pivotal parts at each side and the control member is carried by a link pivotally carried by the support. Swinging, or adjustment between upright and reclined positions is determined by the movements or pressures brought to bear by the occupant of the chair.
Patent GB-363565-A (GB)
Title: Improvements in or relating to headers for steam superheaters
IPC: F22G7/06
Filed: 1931-03-09
Abstract: 363,565. Steam superheaters. SUPERHEATER CO., Ltd., Bush House, Aldwych, London. - (Schmidt'sche Heissdampf Ges. ; 2, Rolandstrasse, Wilhelmsh÷he, Cassel, Germany.) March 9, 1931, No. 7220. [Class 123 (iii).] Steam superheater-headers comprising two separately formed sections 1, 5, for saturated and superheated steam each having a longitudinal channel 2, 6, and a number of transverse pockets 3, 7, have means for maintaining alignment of the pocket faces whilst permitting differential expansion of the header sections. A bar 9 runs through recesses between lugs 19, 23 of the pockets 3, 7, and is secured at its ends to the saturated steam header by studs and nuts 21 which draw it firmly against the bottoms of the recesses 20 between the lugs 19. The recesses 22 in the pockets 7 are deeper so as to provide a clearance space 13 enabling the pockets to expand horizontally. The two header sections are coupled rigidly at the rear by bolts 16 passing through lugs 14, 15 depending from the sections ; the hole in the lugs of the superheated steam section may be horizontally elongated to permit longitudinal expansion of the section. Projections 17 on section 5 rest on the upper surfaces 18 of the lugs on the other section to relieve the strain on the bolts 16. In the form shown in Fig. 5 in which the pockets point in opposite directions, additional lugs 34 are provided on the front of the section 5, and lugs 36 at the rear of section 1 these lugs intervening respectively between the lugs 19, 23 to accommodate a bar 9a at the, rear in addition to the bar 9. Deeper recesses are provided as before between the lugs on the superheated steam section. In a modification, the bar 9 extends along the header with lugs on the alternate sections abutting it below and above and is secured, say, to three of the lugs on the saturated steam section by screws passing through elongated holes in the lugs. In another construction the header sections are connected at the rear by a rod passing through eyes in the pockets, distance-pieces being provided only between the central and adjacent eyes so as to allow for longitudinal expansion in both directions. At the front the sections are connected by vertical bolts passing through lugs on the two sections, the bores in the superheated steam section providing ample clearance for the bolts on which the nuts are locked in a slightly slack position. Another form has front securing means and rear connections in its central part as shown in Fig. 3, whilst at each end of the rear transverse depending lugs on each section are secured by a stud rigidly mounted on one lug and slidably engaged in a hole in the other.
Patent GB-1300008-A (GB)
Title: Corona discharge device
Inventor: KAMOGAWA NIN-ICHI
IPC: G03G15/02
Filed: 1971-03-18
Abstract: 1300008 Corona device KONISHIROKU PHOTO INDUSTRY CO LTD 18 March 1971 7227/71 Heading G2H A corona discharge device comprises a pair of elongate conductive members 17 of L-shaped cross-section insulated from the earthed housing 15 and corona wire 14 to prevent fouling of wire 14 by toner etc. Members 17 may extend below housing 15 Fig.3 (not shown). A pair of parallel corona wires may be employed Figs. 5 and 6 (not shown). A potential independent of that applied to the wire(s) may be applied to members 17 Fig. 6 (not shown).
Patent GB-786862-A (GB)
Title: Fitting for attachment to perforated members
IPC: H01B17/58
Filed: 1955-03-11
Abstract: 786,862. Rivets, stud and socket fastenings. OXLEY, R. F. March 6, 1956 [March 11, 1955], No. 7267/55. Classes 44 and 89(1) [Also in Groups XXII and XXXVI] A fitting suitable for use as a terminal mounting on a radio chassis comprises a bush 11 of deformable material (e.g. P.T.F.E.) which is inserted into an apertured plate 12 and a spigot 10 which has an enlarged portion 16 so that on pushing the spigot through the bore of the bush the enlarged portion 16 expands the projecting part of the bush 22 and prevents withdrawal and a second enlarged portion 17 which prevents the spigot being pushed too far. Leads may be soldered to the ends 13, 15 of the spigot. Alternatively only the end 15 may be used, the. end 22 of the bush being blanked off. The spigot may be of circular cross-section or may be stamped from sheet metal.
Patent GB-268751-A (GB)
Title: Release apparatus for dead man devices on electrically driven vehicles
IPC: B60L3/02
Filed: 1927-03-16
Abstract: 268,751. Maschinenfabrik Oerlikon. March 31, 1926, [Convention date]. Handles; braking devices; auxiliary switches.-Motor controllers on electricallypropelled vehicles are fitted with dead man's handle devices 9 which, when released, cause a driving shaft 1 to be clutched to a rotary switch 6 for the purpose of closing a safety circuit, preferably through the contacts of a timing relay 8. The safety circuit may contain means for opening main switches and applying brakes. In a modification the rotary switch 6 is replaced by a cam which acts mechanically upon the main switch and the brake valve.
Patent GB-274419-A (GB)
Title: Production of high grade iron or steel
IPC: C21C1/00
Filed: 1927-03-16
Abstract: 274,419. Piwowarsky, E., and Oberhoffer, p. July 15, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Addition to 267,939. Purifying and refining.-In the production of high grade iron and steel as described in the parent Specification a material having less than 1.5 per cent of carbon is produced in the cupola furnace in one operation and this material, which may then be treated in the fore-hearth of the furnace, is cast into blocks or shaped pieces.
Patent GB-835651-A (GB)
Title: Stable vinyl acetate-acrylamide copolymer emulsions and water-resistant films therefrom
IPC: C08F218/08
Filed: 1958-03-07
Abstract: Stable aqueous copolymer emulsions are made by dissolving acrylamide in an aqueous medium with a water-soluble inorganic peroxy polymerization catalyst, dissolving vinyl acetate in the aqueous medium and heating to copolymerize the monomers and form a stable emulsion of the copolymer, the proportion of acrylamide being in the range of from 3.5 to 10% by weight of the vinyl acetate and the sum of the monomers being between 30 and 60% of the total emulsion by weight.  A third monomer, e.g. crotonic acid, may be present in an amount of between 3 and 10% by weight of the vinyl acetate. Catalysts specified are hydrogen peroxide and potassium persulphate, which latter may be used alone or in combination with sodium bisulphite or silver nitrate.  The whole quantity of catalyst and vinyl acetate may be added to the reaction mixture at the start of polymerization, but preferably a portion is present initially and the remainder is added as the reaction proceeds.  The polymerization medium may be emulsifier-free or contain an emulsifier such as stearamidopropyl - dimethyl - beta - hydroxyethyl ammonium dihydrogen phosphate or a sodium alkyl aryl sulphonate.  The emulsions are used in the preparation of films which when dried at a temperature of 80-110 DEG  C. are waterresistant.  The terpolymers derived from crotonic acid are soluble in dilute alkali.
Patent GB-872396-A (GB)
Title: A continuous process for the production of "beer"
IPC: C12C11/00
Filed: 1957-07-26
Abstract: The subject-matter of this Specification is identical with that described in Specification 872,391, but the claims are directed to continuously fermenting wort in at least one fermenting vessel and maintaining a desired yeast concentration in the vessel, adding wort to the fermenting wort at a desired rate, agitating the resulting body of liquid to cause substantially immediate homogeneity of the added wort and the fermenting wort, maintaining the body of liquid at a substantially uniform temperature and withdrawing fermented wort from the vessel.  The rate of yeast propagation and concentration may be controlled by the fermentation conditions to a predetermined value chosen in accordance with the desired nature of the finished beer.
Patent GB-1078591-A (GB)
Title: Reclining chair of the multiple position lounger type
IPC: A47C1/0355
Filed: 1966-02-21
Abstract: 1,078,591. Seats. P. S. FLETCHER. Feb. 21, 1966, No. 7446/66. Heading A4J. In a three position reclining chair, in which body-supporting members 26, 28 are carried, on links 48, 62 and 54, rearwardly with respect to stationary carrier bars 44, during a first transition, during a second transition, in which the carrier bars 44 are released from latches 78, 80 to tilt about pivots 46, linkages 66, 72 are operative to increase the angle between members 26 and 28. Latches 78, 80 are released by projections (86) on bars (42), as the chair reaches the semi-reclined position. Links 54 simultaneously abut pivots 46 and remain stationary in this position during the second transition. In the upright and semi-reclined positions of the chair, the carrier bars 44 rest on studs 45. A two-part foot rest 32, 34 is operated by links 116. Reference has been directed by the Comptroller to Specification 897,918.