baber/WOPTO huggingface dataset:
Patent GB-1065673-A (GB)
Title: Process for making heat-stable hydroxyl-containing vinyl polymer
IPC: C08F214/06
Filed: 1964-10-13
Abstract: Heat stable, hydroxyl-containing vinyl polymers are prepared by a process which comprises (A) forming a suspension of a copolymer of 51 to 95 weight per cent vinyl chloride and 49 to 5 weight per cent vinyl acetate in particulate form in a substantially anhydrous reaction medium comprising (a) a C1- 4 alkanol and (b) an organic solvent which swells the polymer, in amount sufficient to swell the copolymer but insufficient to cause agglomeration or coalescence of the particles, adding a strongly basic material to said suspension in the absence of oxygen at 30 DEG  to 55 DEG  C. for a period of time sufficient to convert at least 40% of the acetate groups to hydroxyl groups; (B) chlorinating the resulting polymer in said suspension at a pH of 6 to 9 in the presence of oxygen at 5 DEG  to 45 DEG  C. and in the presence of an iron salt capable of forming ferric hydroxide when contacted with a strong base, said iron salt being present in amount sufficient to provide 20 to 1000 parts of iron per million parts by weight of the copolymer; and (C) separating the polymer from the reaction medium.  The starting copolymer may be derived from up to 5% of other monomers, e.g. vinyl, allyl and isopropenyl esters, vinyl and allyl ethers, olefines, vinyl aromatic hydrocarbons, acrylic and methacrylic esters, and vinyl, vinylidene and vinylene halides.  Specified solvents are acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, dioxane, tetrahydrofuran, benzene, toluene, xylene and ethyl benzene. Specified bases are alkali metal hydroxides and alcoholates, and quaternary ammonium hydroxides. The iron salt is preferably added prior to the hydrolysis step, and may be ferrous formate, acetate, carbonate, ammonium sulphate, iodide, lactate, thiosulphate, tartarate or chloride, or ferric acetate, arsenate, formate, hydrophosphite, sulphate, oxalate, tartarate or chloride. Recovery may be effected by treating the slurry with hydrochloric acid and a chelating agent, e.g. nitrilotriacetic acid, ethylenediamine tetraacetic acid, diethylene triamine pentaacetic acid, gluconic acid, citric acid and tartaric acid, and then neutralizing the slurry. The dissolved fraction of the product may be precipitated by adding water, and the liquid phase separated by decanting, centrifuging and filtering.  The products may be mixed with solvents, plasticizers, alkyd resins, urea-formaldehyde resins, phenolic resins, rosin modified phenolic resins and maleic modified rosin, to give coating compositions.
Patent GB-1510474-A (GB)
Title: Endless belts
IPC: B65G15/32
Filed: 1975-04-29
Abstract: 1510474 Conveyer belts H DOBSON 29 April 1975 41894/77 Divided out of 1510473 Heading B8A A seamless, endless conveyer belt, of thermoplastic material, having apertures formed therethrough along the length of the belt, and to one side of the longitudinal median line of the belt. The description is the same as in the parent Specification, but the claims differ.
Patent GB-880704-A (GB)
Title: Carriage return and line spacing mechanism
IPC: B41J19/94
Filed: 1958-12-29
Abstract: 880,704. Ratchet clutches. INTERNATIONAL BUSINESS MACHINES CORPORATION. Dec. 29, 1958 [Dec. 30, 1957], No. 41906/58. Class 80 (2). [Also in Group XVI] A belt-driven toothed wheel 21 on a shaft 22 drives a loose sleeve 26 through a coiled spring 30. The sleeve 26 can be clutched to drive a gear 38 by a spring 41 held by a clamp 42 on the sleeve and caused to frictionally drive the gear 38 when a roller 44 forces the spring against a hub portion 39. A spring 47 tends to drive the shaft 12 in the opposite direction and to prevent it from reaching an excessive speed a gear 46 is meshed with a gear 147 having a hub 149 connected by a spring 150 to a member 148 fast on the shaft 22. The arrangement is such that if the gear 147 tends to rotate faster than the shaft 22 the spring 150 clutches it to the member 148 to retard the speed. Specification 873,920 is referred to.
Patent GB-973367-A (GB)
Title: Phenol alkylation process
IPC: C07C37/14
Filed: 1961-11-23
Abstract: Ortho-tert butyl phenol, 2, 4-di-tert-butyl-phenol and 2, 6-di-tert-butyl phenol are conjointly prepared by subjecting a reaction mixture composed of phenol, isobutylene, an aluminium phenoxide catalyst and a halogen compound, to a temperature of from about 120 DEG  to about 160 DEG C. and a pressure of about 100 to about 900 psig.  The reaction is carried out for a time ranging from between that time at which each of ortho-tert-butyl phenol, 2, 4-di-tert butyl phenol and 2, 6-di-tert-butyl phenol becomes present and remains present in the reaction mixture at a concentration of at least 10 mole per cent based upon the total phenolic compounds present in the reaction mixture to that time at which the mole percentage ratio of ortho-tert-butyl phenol + 2, 4-di-tert-butyl phenol + 2, 6-di-tert-butyl phenol 2, 4, 6-tri-tert-butyl phenol no longer exceeds 2.0.  The reaction mixture initially contains (a) 0.002 to 0.014 gram atom of aluminium as catalyst per gram mole of phenol, and (b) from 0.1 to 3 gram moles of halogen compound per gram atom of aluminium as catalyst. The halogen compound is essentially a hydrogen halide, an alkyl halide or a mixture thereof.  Preferred halogen compounds are tertiary butyl chloride, hydrogen chloride and mixtures thereof, although other halogen compounds, e.g. tertiary butyl bromide, ethyl chloride, hydrogen bromide and propyl iodide, can also be used. The reaction is preferably carried out under substantially anhydrous conditions.  The aluminium phenoxide catalyst may be prepared by either reacting phenol directly with aluminium metal or with an aluminium derivative of an acid which is weaker than phenol, or by reacting a salt of phenol, e.g. sodium phenoxide with a halide of aluminium, e.g. AlCl3 or AlBr3.  Reference has been directed by the Comptroller to Specification 798,438.
Patent GB-1081569-A (GB)
Title: Closure for containers
IPC: B65D47/24
Filed: 1965-10-04
Abstract: 1,081,569. Container closures. M. B. STULL. Oct. 4, 1965, No. 42086/65. Heading B8T. A container closure, preferably of plastics material, comprises a base member 14 screwed to the container mouth and an elongated spout 16 with a plug 36 supported on a spider 38, and a screw cap 12 with a dispensing hole 54 adapted to be closed by the plug. Co-operating threads 32, 72, on the spout and cap respectively, are shallow and rounded to allow overriding of the threads when the cap is snapped on to the spout mouth. The closure forms three distinct seals between the cap and spout by the abutment of: a lip 60 and the plug 36; a lip 64 and internal surface 34 of the spout; and a lip 42 and the internal surface of the cap. The cap movement is limited at its upper and lower extremities by the abutment of a lip 70 with the lip 42, and the abutment of shoulders (78), Fig 2, on the cap with shoulders (76) on the spout respectively.
Patent GB-1493760-A (GB)
Title: Polyhydroxy phenols and process for their preparation
IPC: C08G59/08
Filed: 1976-10-12
Abstract: 1493760 Polyhydroxyphenols and their production SOC ITALIANA RESINE SIR SpA 12 Oct 1976 [30 Oct 1975] 42391/76 Heading C2C The invention relates to a polyhydroxyphenol of formula where R is an alkyl radical containing from 1 to 10 carbon atoms, the methylene bridges being bonded to the central phenol ring in the orthopositions in relation to the hydroxyl group, and to the other phenol rings in the ortho- or para-position in relation to the hydroxyl group. This compound may be obtained by a process comprising the steps of (a) reacting formaldehyde and a substituted phenol of formula where R is an alkyl radical containing from 1 to 10 carbon atoms, in a formaldehyde/phenol molar ratio of at least 2 : 1, preferably from 2 : 1 to 3 : 1, in the presence of an inorganic base and at a temperature of at least 40‹ C., preferably 40‹ to 80‹ C. thereby to form a dimethylol derivative of said phenol, preferably the reaction mixture of this step does not contain more than 50% by weight of water; (b) adding an acid, e.g. HCl, H 2 SO 4  and phosphoric acids, to the reaction products of (a) in an amount at least equivalent to that of said inorganic base and in the presence of water, and separating the aqueous phase and the dimethylol derivative phase thus obtained; (c) adding to said dimethylol derivative phase an organic solvent capable of dissolving said derivative, normally immiscible or slightly miscible with water and forming with the latter an azeotropic mixture, contacting the resulting solution with phenol in a molar ratio between said phenol and said derivative of at least 2 :1, preferably 2 to 3À5 in the presence of an acid catalyst, e.g. oxalic, benzoic, p-tertiarybutylbenzoic, salicylic and isophthalic acids, and at a temperature of at least 100‹ C., preferably 100‹ to 160‹ C., and maintaining the resulting mixture at boiling point until substantially complete reaction of said derivative with said phenol, while distilling the forming water as an azeotrope with said organic solvent; and (d) recovering the polyhydroxy phenol from the reaction products of (c).
Patent GB-983112-A (GB)
Title: Improvements in or relating to apparatus comprising a piston and a cylinder
IPC: F16J1/02
Filed: 1961-11-30
Abstract: 983,112. Pistons. PHILIPS' GLOEILAMPENFABRIEKEN N.V. Nov. 30, 1961 [Dec. 3, 1960], No. 42892/61. Heading F2T. The cylindrical outer surface of a piston 1 adapted to be positioned substantially without clearance within a cylinder 5 is provided with a layer 3 consisting of a mixture of white metal and at most 5% by weight of molybdenum disulphide or tungsten disulphide which has been applied by spraying. White metal is defined as a tin-base or lead-base alloy containing a few per cent by weight of antimony and copper. The piston is of cast iron and is coated with a layer 2 of tin which may be 0.1 mm. thick. The layer 3 may have a maximum thickness of 5 mms. The piston may be made slightly over size, the excess material of the layer 3 during the running-in period being pressed into circular grooves 4 provided in the layer. The piston and cylinder may be those of a hot-gas engine, a gas refrigerator or a heat pump.
Patent GB-883452-A (GB)
Title: Improvements in or relating to vibration exciter apparatus
IPC: H02K33/18
Filed: 1959-12-21
Abstract: 883,452. Vibrator current supply arrangements. TEXTRON ELECTRONICS Inc. Dec. 21, 1959 [Dec. 30, 1958], No. 43351/59. Class 118. In a vibration exciter apparatus driven by a power amplifier 28, the output of the amplifier is coupled to a fault-sensing circuit 34 responsive to excessive driving voltages, which circuit comprises a resistance-capacity network 36, 38, having a frequency-response characteristic closely conforming at least at low frequencies to the displacement/input voltage response curve of the exciter, the output of the network 34 controlling, through an adjustable amplitude discriminator 42, apparatus 30 for arresting movement of the exciter armature. As shown, the output of network 34 is taken from the junction 40 of the resistor 36 and condenser 38. The amplitude descriminator 42 consists of two adjustable potential dividers 46, 48 in series, which are fed by battery 44 and serve to reverse-bias the rectifiers 56 and 60 in series with the primaries of pulse transformers 58 and 62. The biasing voltages are normally arranged to be of equal magnitude. When the potential at point 40 exceeds the biasing voltage, current flows in one or the other of the pulse transformers, the rectifiers 66 and 72 ensuring that the resulting voltage produced across resistor 68 is always of the same polarity. This voltage triggers the dynamic braking and disabling circuit 30.
Patent GB-1119217-A (GB)
IPC: F42B10/50
Filed: 1965-10-13
Abstract: 1,119,217. Practice projectile. FABRIQUE NATIONALE D'ARMES DE GUERRE SOC. ANON. 13 Oct., 1965 [30 Oct., 1964], No. 43376/65. Heading F3A. A practice projectile having a reduced range in relation to a normal projectile having the same initial kinetic energy is provided with a plurality of tongues situated at the rear of the body of the projectile and forming a prolongation of the body, thereby increasing the drag of the projectile in the air. If the projectile is made from a metallic casing 3 and a composite core 4 and 5 the tongues 6 may be integral with the core or casing and may be flexible such that under the action of centrifugal force they open out and increase the drag of the projectile. In another embodiment the projectile comprises a single homogeneous body of plastics material.
Patent GB-1460998-A (GB)
Title: Transfer regulating apparatus for electrophotographic machines
IPC: G03G15/16
Filed: 1974-10-07
Abstract: 1460998 Printing XEROX CORP 7 Oct 1974 [9 Oct 1973] 43408/74 Heading B6C [Also in Division G3] An electrically charged toner image is transferred to a copy sheet 34 under an electrical potential. A sample area 46 is tested after transfer to determine the toner remaining, and the signal produced used to control the potential. The sample area 46 may be electrically biased transparent electrode set in the surface of photoconductive drum 10. Light is passed thereto, inside the drum, by a light pipe arrangement 56 (and Fig. 2, not shown). Photodetector 50 may be used to produce the signal. A pre-transfer corona generator for applying an alternating potential may be provided.
Patent GB-1017749-A (GB)
Title: Polytetrafluoroethylene
IPC: B02C19/06
Filed: 1964-10-23
Abstract: Ultrafine polytetrafluoroethylene is prepared by subjecting polytetrafluoroethylene particles having no dimension less than 100 microns to milling effected substantially solely by interparticle collision at a temperature below 200 DEG  F., and classifying the milled particles to separate therefrom particles having their maximum dimension not greater than 50 microns, wet sieve size.  Unseparated particles may be resubjected to milling and classification, and interparticle collision may be effected by the accelerating influence of jets of inert gas.  The process may be effected in a mill having the shape of an elongated vertical toroid, the curved upper and lower ends of which are joined by parallel vertical sides, the polymer and inert gas being introduced at the lower curved end, and classification occurring at the upper curved end.  The products may be moulded and sintered to form shaped articles.  Many physical properties of the products are specified.
Patent GB-1026209-A (GB)
Title: Improvements in or relating to systems including a compressible pressure fluid-actuated mechanism
IPC: F42B3/00
Filed: 1963-11-04
Abstract: 1,026,209. Cartridge-operated release mechanisms. J. MARTIN. Oct. 28, 1964 [Nov. 4, 1963], No. 43482/63. Headings F3A and F3C. A canopy-jettisoning mechanism connected by a conduit 1 to a source (not shown) of fluid (air) under pressure comprises a tubular body with a closed upper end apertured for the passage of a plunger 2 having an enlarged lower end 3 making sliding fit in the body. The end 3 is grooved to house a sealing ring 4 and supports a shock-absorbing coil 5 of tubular metal. Plunger 2 abuts a sleeve 6 in screw-threaded engagement with a plug 7 closing the lower end of the mechanism and housing a spring- restrained firing pin 9 carried by a piston 12. The pin 9 is aligned with a gas-generating cartridge 8 supported within the sleeve 6. A bore 16 communicating with the piston 12 is sealed from the conduit 1 by a frangible disc, e.g. a copper disc. On production of a predetermined pressure differential across the disc 18, the disc ruptures and the piston 12 drives the pin 9 upward to fire the cartridge 8. The gas then generated drives the plunger upwards until halted by the shock-absorber 5 and the plunger acts upon the canopy to jettison it. To provide a time delay between operation of a first such mechanism and a second similar mechanism, pressure fluid to operate the second mechanism may be obtained by initiating a slow-burning gas-generating cartridge on actuation of the first mechanism, a frangible diaphragm being placed in the conduit leading from the cartridge to the second mechanism.
Patent GB-1490073-A (GB)
Title: Antioxidant
IPC: C08K5/375
Filed: 1974-10-11
Abstract: 1490073 Stabilizing polymers RAYCHEM CORP 11 Oct 1974 [11 Oct 1973] 44269/74 Heading C3P Polymers may be stabilized with antioxidant compositions comprising a mixture of (a) a hydroxy aromatic compound containing at least one sulphur atom attached to an unsaturated cyclic group and (b) a non-metallic salt or a diester of an organic phosphonic acid. Alternatively the groups may be present in a single compound. The polymers may be polymers or copolymers of ethylene and/or propylene, polyvinyl chloride, polyvinylidene chloride or fluoride, chlorinated polyethylene or an acrylic, polyether or polyester resin, and may be in the form of shaped articles, particularly heatrecoverable articles of cross-linked polymer. Examples describe the stabilizing of polyethylene, optionally in admixture with (III) ethylene /ethyl acrylate copolymer and EPDM copolymer, with antioxidant mixtures comprising (b) di - n - octadecyl - (3 - t - butyl - 4 - hydroxy- 5-methylbenzyl)phosphonate or diamyl amylphosphonate and (a) 2,2<SP>1</SP>-thiobis-(4-methyl-6-tbutylphenol), 4,4<SP>1</SP> - thiobis - (6 - t - butyl - mcresol) and oligomers thereof, 4,4<SP>1</SP>-thiobis-(6-tbutyl-o-cresol), 1,1<SP>1</SP>-thiobis naphthol or a reaction product of 3 moles 4,4<SP>1</SP>-thiobis-(6-t-butylm-cresol) with 1À05 moles phosphorus oxychloride.
Patent GB-444174-A (GB)
Abstract: 444,174. Fluid pressure servomotor systems. AKT.-GES. BROWN, BOVERI, & CIE, Baden, Switzerland. July 13, 1934, No. 20574. Convention date, July 13, 1933. [Class 135] In a steam generator fired with air and oil under pressure and in which the air is supplied by a compressor driven by a gas turbine assisted by an auxiliary motor, the power of the auxiliary motor is controlled by the steam consumption, the power of the prime mover or the quantity of fuel used by the furnace. As shown in Fig. 1, the flow of steam from the boiler 1 to the turbine 7 driving a generator 8 acts upon a diaphragm 10 to control a valve 11 in a pressure oil pipe 12 to vary the pressure acting upon a piston 13 connected to the fuel injection valve 6. Variation of the oil pressure in the pipe 12 is also transmitted to a device 15 by which the brushes in the case of an auxiliary alternating current motor 4 or a resistance in the case of a continuous current motor may be displaced to vary the power of the auxiliary motor assisting the gas turbine 3 driving the compressor 2 supplying combustion air. The oil pressure in the pipe 12 may also be regulated by the output of the generator 8 through the electric regulator 26 connected to the valve 27. Fig. 2 shows an alternative form of control in which steam pressure in the pipe 17 controls through the diaphragm 19 the pressure oil supply to the piston 13 to regulate the fuel supply valve 6, the oil supply to which passes over both sides of an apertured diaphragm 21, the pressure difference on which is balanced by the pressure difference on a diaphragm 23 connected to the air supply pipe constriction nozzle 24 when the fuel and air supply are in the current ratio. Variation of the oil supply operates the valve 25 in the pressure oil supply pipe and actuates the regulator of the auxiliary motor 4. Specification 424,604, [Group XII], is referred to.
Patent GB-1090331-A (GB)
Title: Method and apparatus for coating sheet material
IPC: D21H19/82
Filed: 1964-10-30
Abstract: 1,090,331. Laminates. P. M. GILFILLAN. Oct. 30, 1964 [Oct. 31, 1963], No. 44457/64. Heading B5N. [Also in Divisions D1 and D2] Paper 18 is coated with a polyethylene composition by being passed over a pressurized, resin containing channel 27 of an applicator 20. The coating is doctored by a heated doctor 23 in a turret 24 before being brought into contact with a second web from a roll 44, e.g. of metal foil, polyvinyl chloride sheet, polyvinyl acetate sheet, plain or printed paper. The sheets are brought together between a rubber coated roll 45 pressed against a roll 25 of controlled temperature. The laminate is then coated by being passed over a further applicator 20, doctored, cooled and wound up.
Patent GB-1130522-A (GB)
Title: Improvements relating to self-propelled, self-guided vehicles e.g. automatic lawn mowers
IPC: A01D34/83
Filed: 1965-10-20
Abstract: 1,130,522. Steering vehicles. S. L. BELLINGER. 20 Oct., 1965 [20 Oct., 1964], No. 44511/65. Heading B7H. [Also in Divisions A1 and H4. An automatic self-propelled vehicle, e.g. for agricultural purposes, has boundary detectors on each side which, on detection of a boundary signal, cause the vehicle to reverse and to steer towards the opposite side, the steering returning to straight-ahead as soon as detection ceases. The vehicle may be a lawn mower confined within a boundary defined, e.g., by a buried cable, so that it moves in a to-and-fro path. The mower. Fig. 2, comprises rear idler wheels 12 and front wheels 14 which are driven by a reversible electric motor 23 and turned for steering by a motor 29 through shaft 28 and links 27, 26. The motors are energized from a battery 47 through a relay control circuit (Figs. 5A to 5B; not shown) responsive to boundary signals picked up by side coils 41-44 or centre coil 45. Overriding manual control is provided by a control box 54.
Patent GB-1075807-A (GB)
Title: Improvements relating to film type stills and evaporators
Inventor: JOHNSTON JAMES SLEATOR
IPC: B01D1/22
Filed: 1965-10-27
Abstract: 1,075,807. Evaporators; film-type. HENRY BALFOUR & CO. Ltd. Oct. 5, 1966 [Oct. 27, 1965], No. 45413/65. Addition to 1,038,204. Heading B1B. In an evaporator wherein liquid is evaporated from a liquid-film spread on the internal surface of an externally-heated cylinder shown in part by reference 36), the liquid being spread on the urface by curved wiper elements w which are loosely attached to a otor, in the manner laimed in Specificaion No. 1,038,204, the operative face of each element is recessed vith grooves G, the ide walls g of which are inclined to the longitudinal axis of the element. The line of contact WL of each element with the heated wall of the evaporator may be either inclined to the rotor axis RA, or the line of contact may be parallel to RA.