baber/WOPTO huggingface dataset:
Patent GB-986508-A (GB)
Title: A method for manufacturing amorphous linear copolymers and a catalyst therefor
IPC: C08F4/68
Filed: 1963-04-11
Abstract: Amorphous linear copolymers are produced by copolymerizing ethylene with a -olefins using a homogeneous catalyst dissolved in an inert solvent comprising components (1) a vanadium compound, (2) an alkylaluminium dihalide and (3) a dialkylaluminium alkoxide.  The catalyst is prepared by first adding components (1) and (2) to the inert solvent in a reactor either together or one after the other and then adding component (3), the reactor having been previously flushed with nitrogen.  A gas mixture comprising ethylene and either propylene or butene-1 is introduced and after polymerization the catalyst is destroyed with methanol and hydrochloric acid.  Pentene-1 is also specified as a co-monomer. A number of suitable solvents are listed, n-hexane and nheptane being exemplified.  Specified vanadium compounds are VCl4, VOCl3, VBr4 and VOBr3. Specified alkylaluminium dihalides are ethylaluminium dichloride, propylaluminium dichloride, butylaluminium dichloride and the corresponding bromine and iodine compounds. Specified dialkylaluminium alkoxides are diethylaluminium ethoxide and dimethylaluminium methoxide. The proportion of a -olefin present in the final copolymer can be increased by increasing the proportion of alkylaluminium alkoxide in relation to the amounts of the other catalyst components present.
Patent GB-1243455-A (GB)
Title: Moulding compositions containing thermoplastic polyesters
IPC: C08K5/55
Filed: 1969-03-20
Abstract: 1,243,455. Thermoplastic polyester moulding composition. FARBWERKE HOECHST A.G. 20 March, 1969 [26 March, 1968], No. 14638/69, Heading C3R. A thermoplastic moulding composition comprises (a) a linear saturated polyester of an aromatic dicarboxylic acid and optionally a small amount of an aliphatic dicarboxylic acid with a saturated aliphatic or cycloaliphatic diol, and (b) 0.05 to 1À5% by weight, based on the polyester, of a nucleating agent which is an alkali metal salt of a cyclic boric acid ester, or a mixture of such alkali metal salts. The polyester may be polyethylene terephthalate or polycyclohexane - 1,4 - dimethylol terephthalate. Specified cyclic esters are those of formula where R, R 1 , R 2 , R 3 , R 4 , R 5 , R 6  and R 7  each represents hydrogen or an aliphatic hydrocarbon group having 1 to 4 carbon atoms.
Patent GB-550498-A (GB)
Title: Improvements in or relating to cranes or the like
IPC: E02F9/14
Filed: 1941-11-14
Abstract: 550,498. Tensioning cables. RANSOMES & RAPIER Ltd., and HEATH, A. T. Nov. 14, 1941, No. 14645. [Classes 78 (ii) and 78 (v)] In cranes, excavators &c. which employ two parallel lifting ropes each attached to the same drum and the same load the tensions of the ropes F are equalized by mounting the top reeving sheaves C in separate bearings connected by an equalizer. As shown, each pulley C is mounted between two triangular plates B forming a framework which is pivoted at A<SP>2</SP> to the jib apex, and the angular location of which is controlled by a link D pivoted thereto at B<SP>1</SP>. Each link D is connected pivotally to a swivelling plate E. Thus, if the tension in one rope exceeds that in the other its pulley C and framework B will be pulled downward, thus causing the other framework B and pulley C to be raised and so lengthen the distance between drum and load to increase the tension of the slacker rope. The links D and plate E may be replaced by a cable running round a pulley pivoted at E<SP>1</SP>.
Patent GB-1262613-A (GB)
Title: A method and device for treating workpieces by laser energy
IPC: B23K26/06
Filed: 1970-03-26
Abstract: 1,262,613. Welding by fusion; cutting by fusion. OMEGA LOUIS BRANDT & FRERE S.A., and ALCYON ELECTRONIQUE ET PHYSIQUE S.A. 26 March, 1970 [1 April, 1969], No. 14663/70. Headings B3R and B3V. [Also in Division G2] In laser beam welding, cutting or boring of mechanical, electrical or electronic parts, individual beams are split from a beam from a single laser source and are directed to respective separate places of at least one workpiece. As shown, a partially reflecting mirror 2 splits a single source laser beam 1 into a beam 3 and, via a mirror 4, a beam 5. The beams 3, 5 are, by mirrors 6, 7, redirected as beams 3<SP>1</SP>, 51 to cross each other through a common objective 8 and are focused at places 9, 10 of a workpiece 11. The optical axis of the objective 8 is parallel to or coaxial with the axis of the beam 1. To adjust the position of the places 9, 10, the mirrors 6, 7 are horizontally and, to ensure beam crossing at 8, simultaneously angularly adjusted. To achieve this compound adjustment, the mirrors 6, 7 are each mounted by trunnions 14 on a carriage 13 horizontally displaceable via a belt (not shown), pulley 20 and screw 16, and one trunnion 14 has fast therewith a follower arm 21 spring biased to engage a pin 22 thereof with a curved or straight fixed cam 23. The screws 16 of the respective mirrors may be rotated together or individually. - The mirror 4 also may be partially reflecting to pass a further beam directly through the objective 8. The focal points of three beams such as 3<SP>1</SP>, 5<SP>1</SP> may be equi-angularly distributed in a circle and used, e.g. to weld a ring and cylinder together by three bridging spots. Differing intensities of the individual beams may be achieved by arranging for mirrors, such as 2, 4, to have differing light reflecting properties. Several workpieces may be treated simultaneously in which case a separate focusing objective may be provided for each individual beam. The partially and totally reflecting mirrors may be replaced by double refracting crystals and prisms respectively.
Patent GB-333599-A (GB)
Title: An improved prop for use in mines and like purposes
IPC: E21D15/24
Filed: 1929-05-10
Abstract: 333,599. Baguley, C. May 10, 1929. Mine props.-An extensible prop comprises three coaxial tubular members a, b, c, the part c being relatively rotatable and provided with a cam-like surface or surfaces h on one or both of its ends to coact with a similar surface or surfaces on the ends of one or both of the other members. Spigots on the end members may enter the central member, or spigots on the intermediate member may enter the end members, or a single tubular spigot g may align the three members, which are held together resiliently by a chain and spring. The intermediate member c may be formed from a blank, as shown in Fig. 6, bent into circular form, the ends of which are secured by a bolt.
Patent GB-1072464-A (GB)
Title: The testing of the insulating qualities of dielectric material insulating a conductor bar of a dynamo-electric machine
Inventor: RICHARDS MOSTYN THOMAS
IPC: G01R31/12
Filed: 1965-04-07
Abstract: 1,072,464. Insulation testing. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. April 5, 1966 [April 7, 1965], No. 14770/65. Heading G1U. [Also in Division H2] In order to test the dielectric proportion of the insulation of a conductor bar in the slot of a dynamo-electric machine, a U-shaped capacitive member comprising two metal foils 6, 7 separated by insulation is placed between the insulation 4 and the corona shield 5. A parameter of the current flowing through this capacitor i.e. magnitude, waveform, or phase angle with respect to the applied voltage, may be detected, e.g. with a bridge circuit or dielectric loss analyzer, to indicate the condition of the insulation 4. The dielectric material of the capacitor may be polyethylene terephthalate, polycarbonate, and the corona shield 5 may be asbestos tape treated with a conductive material or a conductive paint applied to a micaceous insulation.
Patent GB-1350574-A (GB)
Title: Muffle furnaces
IPC: F27D11/02
Filed: 1970-03-26
Abstract: 1350574 Electric furnaces A G DOCX 19 April 1971 [26 March 1970 2 May 1970] 14789/70 and 21219/70 Heading H5H [Also in Division F4] An electric furnace has a muffle 6 of ceramic fibre on which is mounted a heating element 7 so as to be at least partially embedded therein. A table 13 is raised and lowered by means of a gear mechanism 14, 15 operated by handle 18 to locate the workpiece, e.g. a false tooth, within the heating zone 8. The mounting of the heating element may be achieved by placing the wire in the grooves of a brass wire gauze former and then dipping the assembly in a slurry of ceramic fibres. Application of a reduced pressure to the inside of the former leaves the wire partially embedded in the support. Alternatively the ceramic fibres are in a suspension in an hydraulic setting agent and are sprayed on to the former or they may be incorporated in a cement which is put on to the former. Ceramic fibre paper 9 surrounds the muffle which is located within the cylindrical jacket 10. The furnace base 23 contains a temperature indicator 25, a controller 26 for the temperature and a timer. A pressure gauge 24 monitors the pressure in chamber 12 and zone 8. A pipe 22 passing into chamber 12 enables the furnace to be evacuated. Reference has been directed by the Comptroller to Specifications 1,233,469 and 1,217,056.
Patent GB-277120-A (GB)
Title: Improvements in and relating to electrical make-and-break devices
IPC: H01H1/08
Filed: 1926-06-11
Abstract: 277,120. Brown, S. G. June 11, 1926. Rotary distributers ; mercury switches.-In a make and break device a number of columns A of conducting liquid such as mercury are contained in channels in an insulating block B and glass plate G secured thereto. A pool D of mercury, into which a lead d<1> dips, is contained in a relatively rotated block C of lignum vitµ which is pressed upwards to bear against the glass plate by a spring c<3>. The leads from the mercury are led to split pins which may be plugged into sockets connecting to the motors of gyro compass repeaters. The disc C may normally oscillate, but when a complete revolution is performed, the columns A contact in turn, in pairs and singly, with the pool D. The pool of mercury D may be replaced by other conducting liquid or by a solid conducting plate.
Patent GB-930933-A (GB)
Title: Polyoxyethylated polyoxyalkylated phenols
Inventor: SOUTHWOOD JOHN
IPC: C08G65/28
Filed: 1961-04-25
Abstract: The invention comprises compounds of formula <FORM:0930933/IV(a)/1> wherein at least two of the R radicals are alkyl and the remainder are alkyl or H, n and m are 1-50 and A is a C3 or C4 alkylene chain. Such compounds are prepared by reacting the appropriate phenol in presence of an alkaline catalyst and at an elevated temperature first with ethylene oxide and then with the C3 or C4 alkylene oxide.  In the examples the phenol is octylcresol, the alkylene oxide is propylene oxide and n and m are respectively (1) 10.9 and 2.8 (average values) and (2) 10 and 3.ALSO:The invention comprises compounds of formula <FORM:0930933/IV(a)/1> wherein at least two of the R radicals are alkyl and the remainder are alkyl or H, n and m are 1-50 and A is a C3 or C4 alkylene chain.  Such compounds are prepared by reacting the appropriate phenol in presence of an alkaline catalyst and at an elevated temperature first with ethylene oxide, then with the C3 or C4 alkylene oxide.  In the examples the phenol is octylcresol, the alkylene oxide is propylene oxide and n and m are respectively (1) 10.9 and 2,8 (average values) and (2) 10 and 3.
Patent GB-984199-A (GB)
Title: Heat-exchanger
IPC: F28D7/12
Filed: 1963-04-16
Abstract: 984,199. Steam generators; tubular heat exchangers. J. A. DAHLGREN. April 16, 1963, No. 14866/63. Headings F4A and F4S. A steam generator or other fluid heatexchanger comprises two parallel tube plates 3 connected together by a support tube 4 and each having a set of Field-tubes 7 extending therefrom into the space between the tube plates, the support tube ends being welded to the tube plates in alignment with openings 5 therein. In the apparatus shown for generating steam a casing 1 surrounds the tubes and has an inlet 9 for hot water from a nuclear reactor which flows in a meandering path over the tubes to a casing outlet 10. Water to be evaporated enters headers 13 through inlets 14. When passing through the tubes 7 the water is vaporized and the steam mixture is withdrawn through ducts 16. In an alternative method of operation, the heating fluid flows through the tubes.
Patent GB-777522-A (GB)
Title: Improvements in or relating to the treatment of yarns with liquids
IPC: D01D10/04
Filed: 1955-05-24
Abstract: 777,522. Coating yarns. CELANESE CORPORATION OF AMERICA. May 24, 1955 [May 24, 1954], No. 14934/55. Class 140. In a process for continuously treating a running yarn with a liquid while it is travelling in a helical path along an advancing reel, a single treating liquid is applied to the running yarn at two or more points in its path and between each pair of successive points of application the greater part of the liquid applied to and remaining on the yarn is removed by simultaneously squeezing the yarn and applying suction thereto. A yarn 12 is wound to form a helix on a thread advancing reel 11 comprising a number of yarn carrying rollers 13 the axis of at least one of which is askew to that of the reel. Treating liquid is supplied from a header 17 having a supply conduit 18 to a number of sprays 19 which supply successive turns of the yarn as it passes over one of the rollers 13. Used treating liquid is withdrawn from the thread after each application by a sucker roll assembly 21. The sucker roll, which bears on the roller 13 next to the sprays or on one further removed, comprises a hexagonal core through each face of which extends a slot. The core fits into a perforated cylindrical shell, the ends of which are closed by plugs having apertures communicating with brackets' 24 pivotally mounting a header 22 to which suction is applied through conduits 23. A knitted fabric cover 25 is fitted over the sucker roll. The treating liquid removed from the yarn by the sucker roll is withdrawn by the circulating air and may be discarded, recycled with,fresh components or treated to recover components. To increase the rate of treatment a number of such roll assemblies and sources of treating liquid may be used. U.S.A. Specification 2,660,808 is referred to.
Patent GB-256738-A (GB)
Title: Improvements in furnaces
IPC: F23G5/24
Filed: 1925-06-09
Abstract: 256,738. Hope, J. A. June 9, 1925. Charging. - A furnace more particularly for burning town refuse and generating combustible gases is charged from a hopper 0 having slides Q, R and a rotary spade-shaped spreader L supported in ball bearings K, J. A cone I surrounding the spreader L is attached to the under side of the top plate H and provided with water cooling pipes which discharge into the bottom of the furnace for cooling the clinker. The spreader L is rotated after each charge by a hand-wheel N through gearing M. Poker holes A<1> covered by doors or slides are provided in the lower part of the furnace. The combustible gases are withdrawn through an aperture below the top plate H.
Patent GB-1286912-A (GB)
Title: Electro-optical cell
IPC: G02F1/03
Filed: 1970-03-26
Abstract: 1286912 Modulating light COMPAGNIE GENERALE D'ELECTRICITE 26 March 1970 [28 March 1969] 15011/70 Heading H4F A Pockels cell comprises an insulating casing 21, electrically insulating apertured plates 25, 26, apertured electrodes 23, 24 and an electrooptic crystal 20, e.g. of KDP, and is characterized in that the end surfaces 26, 27 of crystal 20 are protected by a moisture resistant transparent layer, such as an anti-reflection coating, and in that insulating material is disposed round the lateral surface 32 of the crystal and adheres to the surface 32 and the opposed internal surface of the casing 21, whereby high potential differences may be applied across the crystal 21 with the reduced possiblity of a dielectric breakdown along the lateral surface 32. The insulating material may be a silicone oil or a silicone elastomer, polymerized with the crystal in situ, Fig. 3 (not shown). Modifications comprising two crystals in series are described with reference to Figs. 4 and 5 (not shown).
Patent GB-765730-A (GB)
Title: Improvements relating to apparatus comprising pressure exchangers
Inventor: JENDRASSIK GEORGE
IPC: F04F13/00
Filed: 1951-06-25
Abstract: 765,730. Pressure exchangers. JENDRASSIK DEVELOPMENTS, Ltd. June 23, 1952 [June 25, 1951], No. 15049/51. Class 8(1). [Also in Group XII] Apparatus comprising a rotary pressure exchanger having a ring of cells for the compression and expansion of gas, ducting to lead gas to and from cells at heat input and heat rejection stages, and means for effecting relative rotation between the ring of cells and the ducting, is characterized in that the ducting at the heat input stage comprises an inlet branch to lead gas into the cells and to which a cell becomes open before it becomes open to an outlet branch to lead gas from the cells, and an interconnection between the said branches, externally of the cells to form a ducting system which is substantially closed. In the arrangement shown in Fig. 5 hot gas from a burner 3A enters cells in the cell ring 1 and fresh gas is thereby discharged from these cells into the ducting 2<SP>1</SP> which is connected by duct 5 to the burner 3A. Fresh gas is drawn into the cells from a duct 24 and hot gas is rejected to a duct 23. Supplies of gas may be tapped from the cell ring by a duct 20 or ducts 20, 20A or in a modification by a duct located before the cells reach the heat input stage. Heat exchangers in the heat rejection duct and the tapped gas ducts may be used to preheat the gas at the heat input stage. In a modification fuel is injected into the cells where combustion takes place. Heating surfaces of a boiler may be inserted in the closed duct 5. Specifications 765,732, 765,733, and 765,734 are referred to.
Patent GB-129519-A (GB)
Title: Improvements in Medical Heating Devices.
Inventor: HOMAN JOHN GREENLEAF
IPC: A61F7/12
Filed: 1918-09-17
Abstract: 129,519. Homan, J. G., and Kirk, W. J. Sept. 17, 1918. Heating-appliances.-A medical heating and dilating device for insertion into body cavities comprises a porcelain &c. casing 2 adapted to receive an electric heating element comprising a resistance wire 15 carried by the terminals 9 of a screwed plug 8, the branches of the wire being separated by a mica &c. plate 16. The terminals 9 are engaged by a connector 10 carrying the conductors 13. In a modification, the heating element may be surrounded by a casing 17, and the whole may be inserted in the casing 2, spring locking members 18 being provided to retain it in position.
Patent GB-829899-A (GB)
Title: Improvements in preparation of zinc
Inventor: WYATT JAMES LUTHER
IPC: C22B19/04
Filed: 1958-05-12
Abstract: Oxidic zinc compounds are reduced by establishing a fused bath of an alkali metal halide or alkaline earth metal halide or both, introducing the zinc compound and a gaseous reducing agent, such as carbon monoxide, into the bath at a temperature below the boiling point of zinc metal e.g. 1400-1550 DEG F. and recovering metallic zinc from the gaseous effluent from the bath.  Finely divided carbon may also be introduced into the bath to assist in the reduction.  The oxidic zinc compound may be raw or concentrated zinc ore or zinc residues such as skimmings from galvanizing pots or powdered zinc or zinc alloy having a surface oxide coating.  U.S.A. Specification 2,478,912 is referred to.
Patent GB-1078337-A (GB)
Title: Automatic telecommunication exchange
IPC: H04Q3/00
Filed: 1965-04-09
Abstract: 1,078,337. Automatic exchange systems. INTERNATIONAL STANDARD ELECTRIC CORPORATION. April 9, 1965 [April 10, 1964], No. 15244/65. Heading H4K. In an exchange in which subscribers' lines are split into groups, e.g. of 1000 lines, each of which is served by a number of cross-bar switches LL having access to a common multiple M1 . . . M3, junctors are provided for the interconnection of lines belonging to the same group and also for that of lines belonging to different groups. The common multiples include register-access circuits and lines to a switching stage TS leading to outgoing and incoming trunks TRK. Connections between different subscriber groups are made through a switching stage MM. Another embodiment employs first-choice junctors for interconnecting different groups and also overflow junctors available over the switching stage TS. The intention has particular reference to the crossbar system known as "Pentaconta " (Registered Trade Mark).
Patent GB-203042-A (GB)
Title: Improvements relating to the preservation of stone
IPC: C04B41/50
Filed: 1923-05-15
Abstract: 203,042. Laurie, A. P. May 15, 1923. Stone, treating with liquids.-Stone is impregnated with a solution of a silicic ether in a volatile solvent such as alcohol or benzene. Upon exposure to the atmosphere the solvent evaporates and the ether hydrolyses, leaving silicic acid which binds the particles of stone together.
Patent GB-1132119-A (GB)
Title: Spring unit for vehicle axle
IPC: F16F3/02
Filed: 1966-04-06
Abstract: 1,132,119. Vehicle suspensions. KLOCKNER-HUMBOLDT-DEUTZ A.G. 6 April, 1966 [17 April, 1965], No. 15281/66. Heading B7D. [Also in Division F2] A spring unit for vehicle axles comprises a pull-rod 7 which is slidably mounted in bearing bushes 18, 19 in the elongated hub 17 of an intermediate spring washer 16 which is axially slidable in a bearing bush 20 accommodated in an end 5 of a cylindrical casing and which separates a conically-wound friction spring 2 from a number of cup springs 3, or other springs of linear characteristics, the springs 2, 3 being stressable in series between the cylinder end wall 5 and a spring washer 13 by the rod 7 which carries a thrust plate 8 at its inner end, the latter, secured to the rod by a threaded end pin 9, having a collar 12 slidably guided within the bore of the cylinder 1 and a part spherical convex surface which supports a correspondingly shaped concave surface 14 on the spring washer 13. The rod carries a crossplate 22 between a pair of resilient rings 23, 23 which co-operate with the end walls of a stop housing 24 to limit the travel of the spring unit. The plate 22 also engages longitudinal slots 25 in the housing 24 to prevent rotation of the rod 7. In a wheel suspension arrangement a spring unit 1 is pivoted by its lug 4 to a lever 30 which is fixed to a shaft 31 journalled in the vehicle frame and carrying the crank arm 32 of a wheel axle 33. The outer end of the pullrod 7 threadedly receives a nut 35 which is rotatably mounted in a housing 36 pivoted at 38 to the vehicle frame, the wheel axle being adjustable vertically by means of a pinion 37 which engages teeth on the outer surface of the nut 35 and which is rotatably mounted in the housing 36.
Patent GB-754774-A (GB)
Title: Improvements in movable enclosure structures
Inventor: SHERER ARTHUR FRANCIS
IPC: A01G9/16
Filed: 1954-05-25
Abstract: 754,774. Glasshouses, sliding. WEST DOCK TIMBER CO., Ltd. May 23, 1955 [May 25, 1954], No. 15328/54. Class 20(1). A glasshouse &c. structure 7 can be moved on rollers 8 to a new position by providing detachable extensions 1 to the structure channel rails 6, the extensions 1 having divergent ends 3 with flanged down sides to engage and move (to the right) over the next succeeding rollers placed underneath them. The extensions 1 have welded on connecting pieces 2 bolted at 10 to the channels 6.