baber/WOPTO huggingface dataset:
Patent GB-1020071-A (GB)
Title: Process for obtaining concentrated phosphoric acid
IPC: C01B25/24
Filed: 1962-12-05
Abstract: Phosphonic acid containing at least 70% P2O5, part of which is in the form of polyphosphoric acids, is prepared from aqueous solutions of phosphoric acid containing 25-56% P2O5 e.g. those obtained by the action of H2SO4 on phosphate rock by a four-step process:  (1). Removal of calcium sulphate by known extraction processes at 20-25 DEG  C.  (2) Extraction of phosphoric acid with a polar organic solvent e.g. n-butanol, tertiary amyl alcohol, cyclopentanol, cyclohexanol, dihydroxyethyl-n-hexylether  (3) Addition of sufficient water to form an azeotropic mixture.  (4) Distillation of the azeotrope at atmospheric or subatmospheric pressure.  In an example an aqueous solution of phosphoric acid ofter removal of CaSO4 contains 32% P2O5 and less than 5% each of fluorine, sulphate ion, and calcium, aluminium and iron oxides.  The solution is extracted with tertiary amyl alcohol yielding a precipitate containing iron, alu-minium phosphate and an organic extract containing 93.5-94% of the initial P2O5; water is added to the latter and the azeotropic mixture is distilled at 250-300 mm. Hg to give phosphoric acid residue containing 69.6% P2O5, of which 1.6% is polyphosphoric acid. Cerium and lanthanum are obtained in the precipitate from step (2) and may be extracted, when phosphate rocks containing these rare earths are treated.
Patent GB-1022738-A (GB)
Title: Improvements in or relating to lap recorders
Inventor: GRAY JOHN ARTHUR STANLEY
Filed: 1964-11-12
Abstract: 1,022,738. Counters. AIRFIX PRODUCTS Ltd. Nov. 12, 1964, No. 46143/64. Heading G4D. [Also in Division A6] A model race-track comprises a counter which is advanced at each completion of a lap by the associated model. As shown, models are driven electrically along parallel grooves, and a pin on a model advances its associated counter wheel 8 through lug 27 and ratchet 21. Overthrow is prevented by pawl 26 and reverse movement by a leaf-spring detent 28 (Fig. 2, (not shown). The counter wheels may be reset by knobs 10. Two or more denominations may be provided.
Patent GB-1470420-A (GB)
Title: Combination viewer and projector
IPC: G03B21/10
Filed: 1974-10-25
Abstract: 1470420 Projectors MONTRON CORP 25 Oct 1974 [29 Oct 1973] 46298/74 Heading G2E A projector for motion pictures is adapted for optional use as a viewer and includes a mirror 186 which is selectively movable between a first position in which an optical image is directed through a window 206 in a wall of the casing on to an external screen and a second position in which the image is directed to the rear of a viewing screen 32 mounted in the casing. An endless film is carried in a magazine 41 removably fitted into the casing. Light from a lamp 116 is directed through an opening 82 in the magazine 41 to a reflecting surface 84 which directs the light through the film located over an aperture in the end of the magazine. The light passes through a focusing lens arrangement on to the mirror 186. In the viewer setting the mirror 186 directs the image to a further mirror 201 from which it is directed to the screen 32. The film is advanced in either direction either, as shown, by a manually operated crank disc 112, 113 or by a reversible electric motor. The projector may include a speaker for a sound track. The casing includes a carrying handle 56 around which may be wound the supply leads 55 for the lamp 116 when not in use. A step down transformer 158 is fitted to the leads 55 and may be snap-fitted in the casing when not in use.
Patent GB-1435474-A (GB)
Title: Coilable rule
IPC: G01B3/10
Filed: 1974-10-28
Abstract: 1435474 Flexible rules STANLEY WORKS 28 Oct 1974 [22 Feb 1974] 46487/74 Heading G1M A coilable rule having a rigid casing 10 and a flexible concavo-convex tape 16 retractable into  the casing under the action of a spring is provided with guide surfaces 20, adjacent the mouth 24 of the casing, and a soft, resilient decelerator member 26 between the mouth 24 and the surfaces 20 and having curved surfaces 27, 29 defining with the surfaces 20 a tunnel which is crescent-shaped in transverse cross-section (as seen in Fig. 2), the guide surfaces 20 normally maintaining the tape 16 out of contact with the surfaces 27, 29 but should the tape oscillate on retraction the tape engages the surfaces 27, 29 and its oscillation is damped. Preferably as shown the curvature of the tape 16 is greater than that of surfaces 27, 29 but less than that of guide surfaces 20. The decelerator member 26 may have a forward projection 23 to cushion the impact of a hook 22 on the tape at the end of retraction. The member 26 may be of natural or synthetic material of a high coefficient of friction, e.g. a urethane elastomer or a soft vinyl or natural or synthetic rubber.
Patent GB-1531448-A (GB)
Title: Clutch and method of cooling a clutch
IPC: F16D13/72
Filed: 1975-11-14
Abstract: 1531448 Friction clutches BOFORS AB 14 Nov 1975 [15 Nov 1974] 47093/75 Heading F2C In a friction disc or cone clutch wherein friction facings have circumferential cooling oil grooves 14 interconnecting radial supply ducts 12 blocked at their outer ends and discharge ducts 13 blocked at their inner ends, the discharge groove 13 is provided with a restriction 17 at its outlet to promote a more even flow of oil through the grooves 14. As shown, the grooves and ducts are formed on each side of a driven disc 7 which is normally clamped between a housing end plate 11 and a presser plate 4 by springs 9 acting through levers 10. The clutch is disengaged by moving a sleeve 8 right against the bias of the spring 9. Cooling oil is supplied to the clutch through a hollow output shaft 6 having outlets 18 through which the oil flows into an annular space 19 between the presser plate 4 and clutch driven plate 5. The oil is fed centrifugally from the chamber 19 through the ducts and grooves. In Figs. 2 and 3 (not shown), the grooves and ducts are provided on the discs of a multi-disc oil-cooled hydraulically engaged clutch. The oil flow to the clutch during clutch disengagement is reduced by a valve actuated in dependence upon the hydraulic clutch engaging pressure. In an alternative duct and groove arrangement the radially inner circumferential grooves interconnect a radial supply duct to an intermediate radial duct and the radially outer circumferential grooves interconnect the intermediate radial duct with a radial outlet duct. If the radial outlet duct is unrestricted the radially outer circumferential grooves provide a restriction from the intermediate radial duct and thus promote a more even flow of cooling oil through the radially inner circumferential grooves. Alternatively the discharge duct may be provided with a restriction at its outlet.
Patent GB-1262917-A (GB)
Title: Improvements in and relating to sugar cane diffusers
IPC: C13B10/10
Filed: 1969-09-25
Abstract: 1,262,917. Extracting sugar. FAIRYMEAD SUGAR CO. Ltd. 25 Sept., 1969 [26 Sept., 1968], No. 47196/69. Heading B1Q. Bagasse is treated on a conveyor 116 with liquid fed to various points along the path of the conveyor and the extracted sugar solution being collected in a series of tanks 101-106. Flow of liquid along the surface of the bagasse is prevented by drums 110-115.
Patent GB-1132207-A (GB)
Title: Improvements in and relating to nuclear reactors
IPC: G21D3/10
Filed: 1965-11-08
Abstract: 1,132,207. Controlling reactors. SULZER BROS. Ltd. 8 Nov., 1965 [16 Nov., 1964], No. 47243/65. Addition to 1,005,940. Heading G6C. In a nuclear power plant of the type disclosed in Specification 1,005,940, the difference signal in line 50, derived from element 33 is compared with a limiting value signal 52 to produce a controlling signal for the shut-down rod 56. In an alternative arrangement, the difference signal in line 50 is applied in turn to a limiting- value comparison circuit, a function generator, a turbine pressure measuring device prior to injection into the control rod adjustment circuit. A sudden rise in neutron flux thus simulates an excessive steam pressure rise and the control rods are urged into the core. In a further modification the flux and coolant flow measuring devices are in triplicate and are coupled to the shut-down rod 56 through a 2-out-of-3 circuit.
Patent GB-1072661-A (GB)
Title: Improvements in or relating to hydraulic displacement devices such as pumps or motors
Inventor: ANDREWS THOMAS DESMOND HUDSON
IPC: F04B1/00
Filed: 1964-11-23
Abstract: 1,072,661. Reciprocating pumps and motors. DOWTY TECHNICAL DEVELOPMENTS Ltd. Nov. 11, 1965 [Nov.23, 1964], No.47492/64. Heading F1A. [Also in Division F2] The pistons 32 of a pump or motor are connected to eccentric straps 38 by pins 35 of similar diameter to the pistons. The pin 35 engages a cylindrical bore 48 in the strap 38, part of which is cut away at 49 to clear the end of the piston. The piston is secured to the pin 35 by a hollow bolt 42 and a recess communicating with the hollow bolt is formed in the pin 35 or bore 48 (or in both), opposite the piston and is thereby fed with pressure liquid from the cylinder bore. The Specification described a three cylinder in-line pump. A gear pump connected to the end of the drive shaft supplies lubricant to the shaft and eccentric bearings. The eccentric bearings are separated by spacing members the outer two forming balance weights to counterbalance dynamic unbalance.
Patent GB-1192420-A (GB)
Title: New Pharmacologically Active Compounds
IPC: C07D281/02
Filed: 1967-10-18
Abstract: 1,192,420. Dibenzothiazepines. MEAD JOHNSON & CO. 18 Oct., 1967 [7 Dec., 1966], No. 47525/67. Heading C2C. Novel dibenzothiazepines of Formula I wherein R<SP>1</SP> is located in the 1-, 2-, 3- or 4- position and is a hydrogen, chlorine, bromine, iodine or fluorine atom, or an alkyl group containing 1 to 4 carbon atoms or an alkoxy group of 1 to 4 carbon atoms, R<SP>8</SP> and R<SP>9</SP> are located in the 6-, 7-, 8- or 9-positions, may be the same or different and each is a hydrogen, chlorine, fluorine or bromine atom, or a nitro, methoxy or methyl group, R<SP>11</SP> is an alkyl group of 1 to 4 carbon atoms, Z is a nitrogen heterocycle, doubly bonded through a carbon atom of the ring or an alkylidene side chain in such fashion that the heterocyclic nitrogen atom thereof is separated from the tricyclic ring structure by at least 3 carbon atoms, or it is an aminoalkylidene group of the Formula II wherein Alk is C 3-5  alkylidene having at least 3 C atoms in a straight chain connecting the nitrogen atom to the tricyclic structure, R<SP>5</SP> is C 1-4  alkyl and R<SP>6</SP> is hydrogen or C 1-4  alkyl, and pharmacologically acceptable acid addition salts thereof, are prepared by reacting a compound of Formula III with an appropriate Grignard reagent, and dehydrating the resulting 5-hydroxy-5-Y-dibenzothiazepine of Formula IV in which Y is the same as Z but is singly bonded, the other bond being attached to hydrogen. Compounds I possess central and peripheral anticholinergic and antihistamine activity. Certain of them possess antidepressant activity and some have an anti-serotonin effect. Starting materials of Formula III are prepared by reacting an R<SP>1</SP>-aniline or N-C 1-4  alkyl- R<SP>1</SP>-aniline with a C 1-5  alkyl R<SP>8</SP>,R<SP>9</SP>-2-halosulphonylbenzoate or the corresponding sulphonyl anhydride, and cyclizing the resulting sulphonamide, if necessary after N-alkylation. This preparation is illustrated in the following reaction scheme A 5 - (N - Carbethoxy - 3 - methylamino - 1 - propylidene) - 5,11 - dihydro - 10,10 - dioxo - 11- methyldibenzo-[c,f]-[1,2]-thiazepine is prepared by reacting the corresponding dimethylamino compound with ethyl chloroformate.
Patent GB-1386646-A (GB)
Title: Damping apparatus
IPC: F16F9/30
Filed: 1972-10-17
Abstract: 1386646 Shock absorbers MENASCO MFG CO 17 Oct 1972 47764/72 Heading F2S A piston-cylinder shock absorber for mounting a bumper on a vehicle (not shown) has a preloaded compressible solid 38 as the energy absorbing medium and, after assembly of the shock absorber, the open end of the cylinder 12 is plastically deformed into engagement with a collar 26 which serves as a piston-rod guide. Serrations 28 in the collar 26 facilitate engagement with the cylinder 12. An annular recess 40 in the piston ensures that on impact the medium under pressure forces the forward edge of the piston against the cylinder thus preventing flow of medium round the piston and restricting the flow to the apertures 36. These apertures may, however, be replaced by peripheral cutouts in the piston to give a designed flow round the piston.
Patent GB-1247845-A (GB)
Title: Improvements in cartons
IPC: B65D5/4805
Filed: 1967-10-20
Abstract: 1,247,845. Blank for internally partitioned cartons. DAKOTA Ltd., and R. BENT. 21 Jan., 1969 [20 Oct., 1967], No. 47819/67. Heading B8P. A one-piece blank 1 for forming an internally partitioned carton comprises a strip divided by transverse score lines 2-9 into panels 10-18, adhesive being applied to the appropriate surfaces at 31 and 32. Panel 12 is sub-divided by cuts 19 into a series of sections 12a slotted at 37 and bendable with the aid of score lines 20-23 into a plane at right angles to the blank, and panels 15, 16 and 17 are apertured so that fingers 15a and 17a are formed in panels 15 and 17, and bridge-pieces 16a joining the fingers are formed in panel 16. In use, the blank is folded and stuck as in Fig. 2, the panels 15 and 17 becoming internal dividing walls, after which the sections 12a are folded downwardly to form the intersecting dividing walls, the slots 37 engaging tongues 15a of the walls 15 and 17 and the bridge-pieces 16 being bent down into contact with and adhered to the middle portions of sections 12a. The lugs 30 engage the slots in the extreme right section 12a to rigidify the carton.
Patent GB-1208783-A (GB)
Title: Improvements relating to polyethylene terephthalate films
IPC: B29C55/00
Filed: 1967-10-23
Abstract: 1,208,783. Making polyester films. E. I. DU PONT DE NEMOURS & CO. 23 Oct., 1967 [21 Oct., 1966], No. 48139/67. Addition to 1,108,486. Heading B5B. [Also in Divisions G4 and H1] Self-supporting biaxially oriented, heat-set films of polyethylene terephthalate in which the polymer has an intrinsic viscosity greater than 0À82 have a density between 1À370 and 1À400, the angle of orientation of the long axis of the crystallites in the film is between 30 and 60 degrees with respect to the direction of principal orientation, and the angle of orientation of the (100) crystallite planes is less than 30 degrees with respect to the plane of the film. The polymer may be prepared by polymerization in the molten state starting from monomer which may be carried to the desired final degree of polymerization, as determined from the intrinsic viscosity of a solution of the polymer sample, the final polymerization step being continued beyond the usual limit of intrinsic viscosity of 0À60 or less, by continuing the condensation reaction at a temperature of 265 to 280 C. at 3 mm. or less pressure. Alternatively, the desired degree of polymerization may be achieved by heating the pulverized polymer or prepolymer in a stream ofinert gas which fluidizes the bed of solid material and carries off by-products of the condensation polymerization reaction. The polymer may be shaped into film either by melt extrusion or by pressing the solid polymer in an hydraulic press with heated platens or between heated rolls. The films are biaxially oriented either sequentially or simultaneously by stretching in the longitudinal and transverse directions at a stretch ratio greater than 2, preferably 3 to 6, e.g. at a temperature within the range 70 to 150 C. The heatsetting of the biaxially oriented film is accomplished by heating the film to a degree necessary to achieve the required density while holding it under restraint, e.g. at a temperature above 150 C. for a period sufficient to maintain the density at a value within the range 1À37 to 1À40. The intrinsic viscosity of the polymer used in the invention is measured by determining the relative viscosity of the polymer in a 1% solution at 30 C. in a mixture of 25 parts by volume of trifluoroacetic acid and 75 parts by volume of methylene chloride. In an example, a film is formed by melt casting from a polyethylene terephthalate formed by melt polymerization, the film is stretched first in the longitudinal and then in the transverse direction, the stretch ratio in both directions being 3 and the stretch temperature 105 C. The film is then heat set at a temperature within the range 190 to 230 C.
Patent GB-1103508-A (GB)
Title: Improvements in the application of coatings to surfaces
Inventor: NEWTON HARRY
IPC: C23C26/00
Filed: 1964-11-27
Abstract: A method of coating a metal surface comprises attaching a wire mesh, crimped at intervals, to the surface so that the wire mesh is attached at a number of spaced points, and applying coating material over the wire mesh.  The wire mesh contacts the surface at positions of crimping or along cross wire strands joining the crimped wire strands at positions of crimping, and may be attached by welding, stapling or clipping.  The coating may comprise cast or blown cements, concrete, refracttories or heat-or sound-insulating, radio-active shielding, or corrosion protective materials.  In Figure 1 (not shown) the wire mesh consists of two sets of parallel wires, welded or otherwise attached to each other at the points where they cross, one set being crimped along parallel lines close to and parallel to the other set.  In Figure 2 (not shown), one set of wires is crimped along the lines of the other set, and the latter set of wires is attached to the surface at a number of points by spot welding.  In the embodiment of the invention, a crimped mesh of carbon steel wire is attached by welding to a steel surface at regular intervals on the uncrimped wires, and concrete applied. Applications mentioned are the lining of land and marine boilers, chimney stacks, chemical plant, atomic reactor components on land or in ships and radioactive laboratory or undersea structures.
Patent GB-993704-A (GB)
Title: Process for the manufacture of urethanes
Inventor: MOUNTFIELD BRIAN ARTHUR
IPC: C08L75/00
Filed: 1962-12-21
Abstract: Urethanes are made by reacting an organic compound containing at least one hydroxyl group with carbon monoxide and with a nitrogenous compound containing at least one non-cyclic group in which a nitrogen atom is directly attached to a single carbon atom and through a double bond to an oxygen or another nitrogen.  The hydroxy compounds have the formula R(OH)n or P(OH)n where n is 1 or more, preferably 1 to 3, R is an optionally substituted aliphatic, cycloaliphatic, or araliphatic group, P is an aromatic group containing one or more benzenoid rings which may be fused or joined by single valency bonds, directly or through bridging groups such as oxygen or sulphur atoms, sulphoxide, sulphone or carbonyl groups, or alkylene groups in which the chain may be interrupted by oxygen, or sulphur atoms, sulphoxide, sulphone or carbonyl groups. Many suitable hydroxy compounds are specified. Suitable nitrogenous compounds are organic nitro, nitroso, azo and azoxy compounds or mixtures thereof.  The process may be effected at super-atmospheric pressure, e.g. 50-500 atm., at temperatures up to 250 DEG  C.  Suitable catalysts are metal carbonyls such as a carbonyl, hydrogen carbonyl, halogen carbonyl, hydrocarbon carbonyl, hydrocarbon halogen carbonyl, nitrose carbonyl or cyanocarbonyl of an element in Group VIa, VIIa and VIIIa of the Periodic Table such as Cr, Mo, W, Mn, Fe, Co, Ni, Ru, Rh, Ds and Ir.ALSO:Polyurethane polymers are made by reacting polynitro, polynitroso or nitro-substituted azo or azoxy compounds with organic polyhydroxy compounds and carbon monoxide.  Linear polyurethanes may be made from diols, dinitro compounds and carbon monoxide or from hydroxynitro compounds and carbon monoxide, whilst cross-linked polyurethane polymers may be obtained directly from di- or poly-nitro compounds, diols or polyols and carbon monoxide. The hydroxy compounds may be optionally substituted aliphatic, cycloaliphatic or araliphatic or aromatic compounds containing one or more benzenoid rings which may be fused or joined by single valency bonds, directly or through bridging groups such as oxygen or sulphur atoms, sulphoxide, sulphone or carbonyl groups, or alkylene groups in which the chain may be interrupted by oxygen or sulphur atoms, sulphoxide, sulphone or carbonyl groups.  The process may be effected at superatmospheric pressure at temperatures up to 250 DEG  C.  Suitable catalysts are metal carbonyls of Group VIa, VIIa and VIIIa of the Periodic Table, e.g. of Cr, Mo, W. Mn, Fe, Co, Ni, Ru, Rh, Os and Ir.
Patent GB-1399797-A (GB)
Title: Toy
IPC: A63H7/04
Filed: 1973-10-15
Abstract: 1399797 Wheeled toys R J MANNING 15 Oct 1973 [16 Oct 1972] 48540/73 Heading A6S A wheeled toy which is unlikely to injure a child or damage the surroundings if mishandled comprises a body portion of a foamed, resilient compressible material, e.g. foamed polyurethane, with wheels of a foamed, resilient compressible material on its opposite sides, each wheel containing a hub member of a less compressible material extending from the inner wall of the wheel towards but not up to the outer wall of the wheel, and each hub member having a cylindrical passage receiving the end of an axle extending through the body portion, the ends of the axle being spaced inwardly from the outer walls of the wheels. The wheeled toy may simulate a motor car, a motor lory, a racing car or an animal. In one form, a toy motor car has a body 11, Fig. 1, of a foamed resilient plastics, with wheels 12-14 also of a foamed resilient plastics. Each wheel 13, &c, Fig. 2, contains an insert hub 22 of a less resilient material. End flanges 23 of the hubs are received in undercut holes in the wheels. The two ends of an axle 26 are secured by friction or by adhesive in the hubs 23. The axle 26 is journalled in a transverse hole 27 through the toy car body 11, the local surface of the foamed plastics material of the body forming the hole being fused, e.g. by passing a hot rod through it. Disks 30, 31 cemented to the outside of the car body help support the car body. Headlamps 18, a windscreen 19, &c are marked by lines upon the car body 11. In a modification, the axle 26 is journalled in a sleeve (33), Fig. 3 (not shown), of metal or plastics. Another form of wheel 35, Fig. 4, consists of two parts 36, 37 of foamed resilient material secured together by adhesive and containing a hub 39. The end of an axle 40 has a head 43 to retain it in the hub 39. Another wheeled toy 50, Figs. 5, 6, simulates a worm and has a two-part body 51, 52 made of a resilient foam material and pivotally connected by an axle 57 carrying eccentrically at its ends a pair of oval wheels 58, 59 of foamed resilient material. Circular wheels 62. 64 are journalled at the head and tail of the worm. The oval, eccentrically journalled wheels 58 undulate the worm as it progresses.