baber/WOPTO huggingface dataset:
Patent GB-204322-A (GB)
Title: Improvements in working up cellulose sludge
IPC: D21C11/00
Filed: 1923-09-17
Abstract: Alkali metal compounds, recovering from liquors containing organic matter.  A precipitate obtained in the purification of soda liquors in which wood-pulp has been treated, by adding a heavy metal compound such as copper sulphate as described in Specification 1573/12, is treated to recover the valuable ingredients such as soda and copper by heating in an autoclave for instance for three hours at three atmospheres.  The products are a brown liquor and cuprous oxide, or, according to the Specification as open to inspection under Sect. 91 (3) (a), metallic copper.ALSO:A precipitate obtained in the purification of soda liquors in which wood-pulp has been treated, by adding a heavy metal compound such as copper sulphate as described in Specification 1573/12, [Class 1 (ii), Inorganic compounds, other than &c.], is treated to recover the valuable ingredients such as soda and copper by heating in an autoclave, for instance for three hours at three atmospheres.  The products are a brown liquor and cuprous oxide.
Patent GB-501411-A (GB)
Title: Apparatus for thermal generation of electric current
IPC: H01L35/00
Filed: 1937-08-24
Abstract: 501,411. Thermo electric batteries. MILNES; H. R., and MILNES RADIO CO., Ltd. Aug. 24, 1937, No. 23245. [Class 53] A thermo-electric battery consists of a, number of elements S, C of an alloy of copper, silver and selenium which are in contact on one face with a bar of nickel or other metal A which is provided with a funnel B and is heated by a burner D. The bars A act as heaters for the faces of the elements S, C. The opposite faces of the elements are cooled by copper bars F which through the medium of springs H serve also to clamp the parts together. - The bars F may be provided with fins f. The elements S, C are not more than one eighth of an inch in thickness and are not of the same composition, the elements S containing more silver than copper, and the elements C containing more copper than silver. To prevent selenium from diffusing from the alloy into the adjacent bars A, F the contact faces may be plated with platinum, palladium, iridium or rhodium. Fig. 1 shows four separate generators joined by conductors I. Fig. 3 shows another arrangement in which two groups of generators are connected by a, conductor I<SP>3</SP>, each group consisting of elements S, C clamped between the heating and cooling bars A, F by springs. The bars F are provided with cooling fins f. Fig. 5 shows a further modification in which the heating bars A,are in contact with metal bars J which pass through the wall K of a furnace or boiler and are joined in pairs by heat collecting plates L. Specification 501,410 is referred to.
Patent GB-1136030-A (GB)
Title: Bottle stopper
IPC: B65D41/48
Filed: 1966-05-25
Abstract: 1,136,030. Stoppers. K. HAYASHIDA. 25 May, 1966 [23 Oct., 1965], No. 23249/66. Heading B8T. A bottle stopper of plastics includes a plug having an upper relatively thick cylindrical section 2 and a lower relatively thin outwardlyflared section 3, the arrangement being such that as the stopper is forced into the neck of a bottle, the outwardly-flared section (3<SP>1</SP>), Fig. 6 (not shown), is turned back upon itself so that its lower face engages the inside of the bottle neck. The lower outwardly-flared plug 3, Fig. 3, has as shown annular ridges 4 around its neck-engaging face. The stopper illustrated is tamper-proof, having an extended skirt 5 provided with a notch 11 at its lower edge and lines of weakness 15, (10<SP>1</SP>), (10<SP>11</SP>), Fig. 1 (not shown). The notch 11 &c., Fig. 3, allows the skirt 5 to be torn off, thus permitting initial drawing of the stopper. The top 1 and plug 2, 3 of the stopper can then be re-used, tearing off the skirt 5 leaving a finger-tab (14), Figs. 1, 7 (not shown), to facilitate its subsequent drawing. In one modification, which is not tamperproof, the extended skirt is omitted, the stopper having a short beaded skirt (18), Figs. 8, 9 (not shown). In another modification, the top (1), Figs. 10, 11 (not shown), is flat, no skirt at all being provided. In a variation of this latter modification, the lower surface of the flat stopper top has annular ridges (19), Fig. 12 (not shown), to engage the top of the bottle neck, and the inside of the cylindrical section of the plug (2) has axial ridges (21).
Patent GB-424240-A (GB)
Title: Improvements in endless track devices for vehicles
IPC: B62D55/04
Filed: 1934-08-11
Abstract: 424,240. Endless tracks for vehicles. HIPKINS, O. F., Port Deposit, Maryland, U.S.A. Aug. 11, 1934, No. 23267. Convention date, Aug. 12, 1933. [Class 79 (i)] Relates to endless tracks of the kind in which a plurality of shoes are arranged around the treads of twin wheels and are connected together by means disposed in a groove between the treads. According to one feature of the invention, the shoes are connected together by a plurality of chain links so as to permit said shoes to rock both laterally and longitudinally. According to another feature, the shoes are connected together by chain sections loosely mounted in the groove between the twin treads, and guides for preventing lateral shifting of the shoes are spaced from the chain sections and are separately mounted on the shoes. The track may be passed over a pair of tandem twin wheels or over a single twin wheel as shown in Fig. 1. The track comprises a number of similar shoes 12 and a coupling shoe 13 connected together by centrally-disposed chain links 29. Each shoe 12 is of channel section strengthened by gusset plates 18 and semicircular ribs 19. Plates 20 of channel-section are secured to the shoe to form gripping or driving engagement with the wheel tyres 11. The chain sections 31 are pivoted at 27 to a block 23 pivotally connected by a pin 26 to the shoe, the pin being passed through a pair of discs 22 secured to the shoe. Guide member 32 is spaced clear of the chains and is secured to the shoe as by welding. Some of the chain links 29 are offset so as to permit of small adjustments of the distance between each pair of shoes. The coupling shoe 13, Fig. 8, is provided with means for readily adjusting the total length of the track, the chain sections 49 being pivoted at 48 to a pair of blocks 44 pivoted on pins 46 to other blocks 41 secured to the shoe. The latter blocks are secured to the shoe by studs 42 each nearer one end of its block than the other end, so that by turning either or both blocks 41 through 180‹ the length of the track can be adjusted.
Patent GB-1470939-A (GB)
Title: Hydrophilic and thermoreactive urethane compositions with improved properties
IPC: C08G18/12
Filed: 1975-05-29
Abstract: 1470939 Laminates DAI-ICHI KOGYO SEIYAKU CO Ltd 29 May 1975 [29 May 1974 (2) 11 June 1974] 23392/75 Heading B5N [Also in Divisions C3 and D1] Artificial leathers are produced by bonding a sheet material suitable as a topcoat to a fabric suitable as a base using an aqueous adhesive composition comprising a hydrophilic and thermoreactive urethane composition prepared by forming a gel-free urethane prepolymer containing free isocyanate groups and at least 1% by weight of ester groups by reacting a compound containing at least 2 active hydrogen atoms, containing an oxyethylene chain, and having a M.W. of 200 to 20,000, optionally in admixture with a similar active hydrogen compound which does not contain an oxyethylene chain and/or a chain extending agent, with an excess of a polyisocyanate so that the prepolymer has an oxyethylene chain content of 10 to 40% by weight, and reacting the prepolymer or a solution thereof in an inert solvent with up to 3 equivalents of a bisulphite salt based on the equivalents of free isocyanate groups, the bisulphite salt being used as an aqueous solution having a concentration of at least 15% by weight. In Examples (11) a nylon film is bonded to a cotton knitted fabric, (12) a polyvinylchloride film is bonded to nylon jersey and (13) paper is bonded to a non-woven fabric to produce artificial leathers having superior bond strength, water resistance, wash resistance and solvent resistance.
Patent GB-1242818-A (GB)
Title: An arrangement for transmitting a rotary movement through the wall of a chamber subjected to pressure
IPC: G01L7/00
Filed: 1970-05-14
Abstract: 1,242,818. Shaft couplings. VDO TACHOMETER WERKE ADOLF SCHINDLING G.m.b.H. 14 May, 1970 [31 May, 1969], No. 23420/70. Heading F2U. An arrangement for coupling an actuating arm 6 to indicator gearing 2 through the wall 4 of a pressure chamber, such as in differential pressure or liquid level indicators, consists of a torsion tube 3 with an open end sealed to wall 4 and the other closed sealed end 5 connected to a coaxial gear shaft 8, the surface of the tube being formed with a series of staggered longitudinal recesses 9 to produce local reductions of wall thickness. In a modification, Figs. 3, 4 (not shown), longitudinal slots extend through the tube wall, either or both of the outer and inner surfaces being coated with a plastics layer.
Patent GB-493011-A (GB)
Title: Improvements in the construction of linings of tunnels, shafts and similar tubular structures
IPC: E21D11/08
Filed: 1937-08-26
Abstract: 493,011. Shaft, tunnel, and like linings. ANDERSON, D., and LONDON PASSENGER TRANSPORT BOARD. Aug. 26, 1937, No. 23432. [Class 85] [Also in Group X] A tunnel, shaft or like lining is constructed of rings formed of trough-like slabs 1 of precast reinforced concrete with the mouths of the troughs on the concave sides and divided into cells 3 by transverse webs 2 with or without a central longitudinal web. A key 4, hollow or solid, completes each ring. The slabs of a ring or adjacent rings are connected by bolts passing through holes 5, 7, in the walls of the trough, the holes having a metal liner 9 with a peripheral flange for anchoring. Lead, felt, &c. may be placed between the slabs in place of grouting.
Patent GB-772343-A (GB)
Title: Process for modifying cellulose or cellulose derivatives
IPC: D01F11/02
Filed: 1955-08-15
Abstract: Nitrogen-containing cellulose derivatives are obtained by contacting cellulose or a cellulose ester or ether containing free hydroxyl groups, in filamentary form or otherwise, with an organic carbodiimide in the presence of a copper salt.  The process is applicable to the treatment of natural or regenerated cellulose such as cotton, cotton linters, cellulose pulp, viscose and cuprammonium rayon, and to the treatment of nitrocellulose, cellulose acetate and methyl cellulose, and solutions of cellulose may also be treated. Specified carbodiimides are diisopropyl-, n-butyl-cyclohexyl-, dicyclohexyl-, methyl - tert. - butyl -, tert. - butyl - cyclohexyl -, cyclohexyl - phenyl -, tert. - butyl - phenyl - and diphenyl-carbodiimide, although any alkyl, dialkyl, aryl, diaryl, alkyl-aryl, cycloalkyl or dicycloalkyl carbodiimides may be employed. Specified copper salts are cuprous and cupric chlorides, sulphates and acetates.  Isourea ethers of cellulose are said to be formed, the treated fibres or fabrics being dyeable with acid dyestuffs. Examples are given.
Patent GB-819867-A (GB)
Title: Process for the production of polyethylenes and catalysts therefor
IPC: C08F110/02
Filed: 1955-08-15
Abstract: A catalyst for the polymerization of pure ethylene is formed by mixing an organic compound of aluminium, magnesium or zinc with a compound of a Group IVa, Va or VI metal in a molecular ratio between the limits of 0.3 to 1 and 8 to 1.  The catalysts are formed out of contact with the atmosphere and may be those disclosed in Specifications 799,392, 799,823 and 801,031.  The pure ethylene used may be obtained by previously washing contaminated ethylene with an organic compound of aluminium, magnesium or zinc.  The Specification discloses particular molecular ratio ranges and provides drawings illustrating their maximum effect on molecular weight, for various particular catalyst combinations.ALSO:Polyethylene of a predetermined degree of polymerization is produced by polymerization of pure ethylene with a catalyst formed by mixing an organic compound of aluminium, magnesium or zinc with a compound of a Group IVa, Va or VIa metal in a molecular ratio between the limits of 0.3 to 1 and 8 to 1.  The catalysts are formed out of contact with the atmosphere and may be those disclosed in and may be used in the processes described in Specifications 799,392, 799,823 and 801,031.  The pure ethylene used may be obtained by previously washing contaminated ethylene with an organic compound of aluminium, zinc or magnesium. In the examples, the diesel oil medium is also purified by distilling over sodium.  The Specification discloses particular molecular ratio ranges and provides drawings illustrating their maximum effect on molecular weight, for various particular catalyst combinations.
Patent GB-352768-A (GB)
Title: Liquid for electric accumulators
IPC: H01M10/08
Filed: 1930-08-06
Abstract: 352,768. Galvanic batteries. SCHMAUS, G., 581, Zizkova Ul, Prague. Aug. 6, 1930, No. 23539. [Class 53.] Electrolytes.-An electrolyte for a storage battery consists of dilute sulphuric acid containing ammonium and aluminium salts and a basic acetate. Basic aluminium acetate may be used with the sulphates of ammonium and aluminium.
Patent GB-321710-A (GB)
Title: Improvements in submarine cables
IPC: H01B11/14
Filed: 1928-08-16
Abstract: 321,710. Beatty, W. E., (Bell Telephone Laboratories, Inc.). Aug. 16, 1928. Insulating coverings for cables; loaded cables. -In submarine telegraph and telephone cables, with the object of reducing and stabilizing the capacity, the insulation consists of a compound containing a substantial amount of rubber mixed with one or more thermo-plastic substances such as balata, gutta-percha, montan wax or montan pitch, so treating the ingredients that the result-. ing compound contains less than 0.15 per cent of nitrogenous matter. Preferably rubber treated by a method such as described in Specification 307,966, [Class 70, Indiarubber &c.], for the elimination of the nitrogenous matter is mixed with the thermo-plastic admixtures, which may be previously deresinated, or, in cases where its nitrogenous content is sufficiently low, crude untreated rubber may be used. The following example of a compound is given, viz., 35 parts rubber with a nitrogen content of less than 0.15 per cent, 30 parts deresinated balata and 35 parts refined montan wax. The conductor may be continuously loaded with a strip of the alloy described in Specification 273,638, [Class 82 (i), Metals, Extracting &c.]. Specification 223,644 also is referred to.
Patent GB-279048-A (GB)
Title: Improvements in suction boxes for textile and paper making machines
IPC: D21F1/50
Filed: 1927-09-08
Abstract: 279,048. Selbec, Inc., (Assignees of Peebles, G.). Oct. 12, 1926, [Convention date]. Suction apparatus. - The rollers 21, 22 of a suction box for extracting moisture from a web of paper pulp are supported in lignum vitae sealing blocks 18, 19 secured to the box, the ends of the rollers being supported in brackets 26, 27, and the space between them sealed at its ends by blocks 42 adjustable horizontally through rack and pinion mechanism to accommodate, webs of different widths. The brackets 26, 27 and the blocks 42 are mounted to take up automatically wear in the blocks. Cooling-water is fed between the ends of the, rollers and the blocks through passages 23<a>.
Patent GB-968187-A (GB)
Title: Foamed polyurethane elastomers
Inventor: HOGG WILFRID HENRY
IPC: C08G18/48
Filed: 1960-07-07
Abstract: A foamed polyurethane is made by (a) reacting a polyol containing terminal or substantially terminal hydroxyl groups with an aliphatic or alicyclic diisocyanate (e.g. dicyclohexylmethane diisocyanate), (b) mixing the reaction product with water, a source of hydrogen peroxide, a catalyst and, possibly, a foam stabilizer (e.g. a silicone) and (c) heating the mixture to effect foaming. The catalyst is triethylene diamine, an alkyl metallo-ester (e.g. dibutyl tin dilaurate), an alkoxy metallo-ester (e.g. dibutoxy tin dilaurate), or a tin soap (e.g. stannous octoate). The polyol may be a hydroxy-polyester, -polyesteramide or -polyether (e.g. polypropylene oxide or oxypropylated glycerol).  The sulphur analogues of the isocyanates, ethers and polyols may be used. The hydrogen peroxide may be added as such or in the form of barium peroxide or urea hydrogen peroxide. An antioxidant, e.g. an alkylene bis dialkyl dithiocarbamate may be incorporated in the foamable composition. The resulting foam may be compressed between rollers to break any closed cells.
Patent GB-481353-A (GB)
Title: Improvements relating to mercury or other conducting liquid switches
IPC: H01H29/18
Filed: 1936-08-31
Abstract: 481,353. Electromagnetic switches; mercury switches. CIANCHI, A. Aug. 31, 1936, No. 23735/37. Divided out of 481,289. [Class 38 (v)] 'An electromagnetic switch comprises a sealed vessel 1, Fig. 1, having electrodes 2, 3 sealed in and containing a cupshaped float 4 carrying an armature 8. On energization of a solenoid 9, the float is drawn downwards until an opening 7 is submerged in mercury 5 and serves to connect electrodes 2, and 3. The armature is held in its depressed position by a spring plunger 11 which can be withdrawn by a solenoid 14 acting on an armature 12, to allow the float to rise to its initial position. In the modification shown in Fig. 3 a solenoid 9 acting on an armature 8 draws down a plunger 4 causing the mercury to rise and engage a contact 2. The plunger 4 is latched in the depressed position by springs 10 which engage the top of the plunger and which can be released by the action of a solenoid 14 and a magnetic tube 15 which repels small armatures 11 on the springs 10, causing the ends of the springs 10 to pass inside the armature 8.
Patent GB-520077-A (GB)
Title: Improvements in and relating to the production of sensitising agents for use in the determination of pregnancy
IPC: G01N33/76
Filed: 1938-08-12
Abstract: 520,077. Pregnancy determinant preparations. BOULY, H. G., and LAKELAND FOUNDATION. (Lakeland Foundation). Aug. 12, 1938, No. 23864. [Class 81 (i)] A sensitizing agent for the determination of pregnancy is obtained from the foetal layer of placental tissue which is separated from the material layer and extracted by an extracting agent for the protein, e.g., an alkaline or acid solution, and an approximately neutral solution made of the extract. A suitable extracting agent is 1/10 N sodium hydroxide. The solution obtained is neutralized by means of an acid and buffer solution containing hydrochloric acid and potassium dihydrogen phosphate, to a pH of about 6.9. In the process of separating the active agent, the foetal layer is extracted with acetone, dried, powdered and treated with the extracting agent. Hormones present may be destroyed by heating to 80‹C. The placental tissue is obtained from the birth of a female. In applying the material for testing it is injected intradermally, the formation of pseudopods constituting a positive indication. Specification 466,749 is referred to.
Patent GB-594351-A (GB)
Title: Improvements in or relating to electric oscillation generators
IPC: H03B5/18
Filed: 1944-11-29
Abstract: 594,351. Valve generating circuits ; impedance networks. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Nov. 29, 1944, No. 23873. Convention date, Sept. 27, 1943. [Classes 40 (iii) and 40 (v)] [Also in Group XXXV] In order that the frequency of an oscillator may be stable throughout a selected range of anode voltage, the tuning inductance 5 is provided with an adjustable copper or other non-magnetic core 11 and an adjustable iron or magnetic dust core 12. The coil 5, suitably tapped, is connected to the valve 1 to form a Colpitts oscillator. Fig. 1 (not shown), or a Hartley oscillator, Fig. 2 (not shown). The condenser 6 comprises two sector-shaped plates spaced apart by a washer, and held by a ring 29 sprung into a groove in the insulating tube 27. The circuit is tuned by setting the relative angular position of the sectors 6, and by axially adjusting the copper core 11 by means of the micrometer head 24. The range of anode voltages at which the frequency will be stable, Fig. 3 (not shown), is selected by similar adjustment of the magnetic core 12, the effect of temperature on the valve being neutralized within this range by that on the circuit elements. An electrostatic screen 20 is distanced from the heating effect of the valve by long pins 17.
Patent GB-320716-A (GB)
Title: Photographic tank
IPC: G03D13/14
Filed: 1928-08-20
Abstract: 320,716. Drew, C. L. Aug. 20, 1928. Developing-apparatus for roll films.-Apparatus for developing, fixing, and washing a length of photographic negative film comprises a container for a removable reel-shaped member on which the film is held, the bottom member of the reel having an annular down-turned flange resting on the container and both top and bottom members of the reel having openings so arranged as to cause the developing &c. liquid entering the space bounded by the bottom member, the flange thereon, and the base of the container, to flow upwardly over the surface of the film. The container 5 has a lid 6 with a downturned rim 7 and with a flange 8 fitting within the container. A funnel 14 with a downwardly-extending tubular portion 16 is secured to the lid, and an overflow 11 is provided at one side of the container. The reel on which the film is mounted comprises a hub 22 fitting over the tube 16, and top and bottom plates 19, 21. The hub is provided with a spring 23, Fig. 4, for the attachment of the end of the film, and the facing surfaces of the members 19, 21 are formed with spiral grooves 24 so that as the film is wound on to the reel its edges enter the grooves and its convolutions are spaced apart as shown in Fig. 2. The member 21 has an annular rim 26 and concentric rings 27, 28 split at 29, 31, Fig. 3. Openings 32 are also provided through which the developing &c. liquid flows. The escape of air is facilitated by openings 19a in the member 19 and by vents 17.
Patent GB-437472-A (GB)
Title: Improvements relating to electric gas-blast circuit-breakers
IPC: H01H33/70
Filed: 1934-08-20
Abstract: 437,472. High - tension switches. RUPPEL, S., 3, Allexander Ufer, Berlin. Aug. 20, 1934, No. 24029. Convention date, Aug. 19, 1933. [Class 38 (v)] Arc-rupturing devices pneumatic actuation. -A gas-blast switch has two series-connected break points, one operating under conditions favourable to the rupture of normal load-current arcs and the other to the rupture of overloadcurrent arcs. Both breaks may be fed from one valve, but preferably each has its own valve so that it is given the most favourable blast-conditions. The valve for the overload break may be operated by the overload relay and the other may be operated by the hand switch-operating mechanism, but the normalload break may also receive a blast from the overload break when that opens. The two breaks are coupled by means of a positive connection, as levers, gearing, or a resilient connection, for operation by a common mechanism, the coupling being so arranged that each break is operated with the speed and travel best suited to it. The overload blastchamber may be kept small by reducing the overload travel, and the travel at the normalload break is made such that together they give a sufficient break. The two breaks may be closed simultaneously, or alternatively the circuit may be closed at the faster-moving break. In Fig. 1, the overload break 1, 4 is connected by a rack and pinion with the normal-load break 3, 7 for simultaneous opening and closing, but the faster-moving contact 7 may close the circuit. In Fig. 2, contact 4 is mounted on a piston in a cylinder 6 and lever 7 is moved by 10 to the dotted position shown. Nozzle 3 may be in two halves with internal contacts or a fixed pin-contact. In Fig. 3 (not shown), an arrangement of 3, 7 similar to Fig. 2 is employed in conjunction with a contact 1, 4 similar to Fig. 1, contact 4 and rod 10 being interconnected by rack and pinion mechanism for conjoint operation.