baber/WOPTO huggingface dataset:
Patent GB-626095-A (GB)
Title: Manufacture of phenols
IPC: C07C39/04
Filed: 1947-02-13
Abstract: Phenols are obtained by acid treatment at elevated temperatures of percompounds formed by the liquid phase oxidation with molecular oxygen of alkyl benzenes containing at least one tertiary carbon atom in the alpha position to the nucleus, the oxidation being effected to such an extent that a substantial amount, e.g. 50-90 per cent of unchanged alkyl benzene remains. Oxygen may be passed through either the heated alkyl benzene optionally dissolved in enert solvents such as toluene or ixylene or a heated oil-in-water dispersion of the alkyl benzene advantageously in the presence of emulsifying agents such as sodium stearate or ricinoleate.  A two-phase decomposition results from the use of such acids as sulphuric, phosphoric and hydrochloric and a vinyl phase decomposition by the use of organic acids such as glacial acetic or p-toluene-sulphonic.  The decomposition is preferably carried out at the boiling point of the mixture and 1-10 per cent by weight aqueous sulphuric acid is preferred.  Instead of acids hydrogen-ion exchange material such as sulphonated phenol-formaldehyde resins or coals may be used. Styrenes, e.g. methyl styrene, acetophenone and acetone are obtained as bye-products.  Phenols may be isolated from the two phase decomposition by decantation of the aqueous acid, which is returned to the decomposing vessel, followed by distillation of the alkyl benzene, preferably under reduced pressure, the phenols being recovered from the still together with acetophenone from which they are separated by fractionation.  The alkyl benzene may be returned to the oxidation stage after removal of phenols by e.g. adsorption or treatment with aqueous alkali metal hydroxide solution and styrenes by e.g. hydrogenation or treatment with sulphuric acid and/or alkali permanganate solution.  Alternatively the products of decomposition may be steam distilled and the phenols recovered from the aqueous residue by fractionation or preferably extraction.  In examples: (1) isopropyl benzene maintained in a dilute aqueous alkaline emulsion is treated at 85 DEG  C. with molecular oxygen, allowed to separate and part of the oil layer decomposed by refluxing with dilute sulphuric acid and part by treatment with concentrated aqueous caustic soda, the aqueous layer formed being acidified and refluxed with dilute sulphuric acid to give phenol which is distilled off, the above reaction mixture is also decomposed by heating with (2) glacial acetic acid; (3) 1 per cent sulphuric acid acetone, methyl styrene, acetophenone and phenol being obtained; (5) p-toluene sulphonic acid to give phenol and acetone, and (6) sulphonated coal and phenol-formaldehyde resins, and in (7) p-cymene is treated at 90 DEG C. with molecular oxygen and the peroxide obtained decomposed with hot 10 per cent sulphuric acid to give p-cresol.
Patent GB-1531673-A (GB)
Title: Production of ticl3-based compounds for olefin polymerization catalysts
IPC: C08F4/64
Filed: 1977-02-02
Abstract: 1531673 Titanium trichloride catalyst components for olefine polymerization NAPHTACHIMIE 2 Feb 1977 [3 Feb 1976] 04213/77 Heading C3P [Also in Division C1] A catalyst component based on titanium trichloride for use with an organometallic compound in the polymerization of alpha-olefines such as ethylene and propylene is prepared by reducing TiCl 4  with an organoaluminium compound AlR n X 3-n , where R is aryl or alkyl, X is H or halogen, n is 1 to 3, in the presence of one or more alkyl ethers containing up to 10 carbon atoms at - 10 to + 60 C., the ratio of Ti to R being at least 1À8 : 1 and of ether to the organoaluminium compound being in the range of 2 to 5, at least part of the ether being mixed with the organoaluminium compound prior to contact with the TiCl 4  and aging the resulting precipitate at 20 to 100 C. for 15 minutes to 24 hours. In the examples a heptane solution of AlEt 2 Cl, AlEtCl 2 , triethyl octyl or butyl aluminium or ethyl aluminium sesquichloride containing di-n-butyl or diisoamyl ether is contacted with a heptane solution of TiCl 4  containing in some cases diisoamyl ether and the product is used with diethyl aluminium to polymerize propylene or with trioctyl aluminium to polymerize ethylene.
Patent GB-1530375-A (GB)
Title: Roller separator for bit bearing
IPC: F16C19/50
Filed: 1976-02-03
Abstract: 1530375 Rock bit DRESSER INDUST- (RIES INC 3 Feb 1976 [13 Feb 1975] 04220/76 Heading E1F A roller cone rock bit has each cone supported on a respective bearing pin by a set of cylindrical rollers 22 separated by complementally-profiled spacers 24 which can be made of different metal to the rollers, the spacers serving to prevent skewing of the rollers. Each cone is typically also supported by balls 19, plain bearing sleeve 20 and thrust button 21. In the case shown, the bearings are lubricated by drilling fluid circulated through the cones, but in another embodiment a seal ring is provided adjacent the mouth of each cone and lubricant is supplied to the cone via a ball loading passage from a reservoir having a diaphragm which is exposed to ambient hydrostatic pressure and carries a central breather plug.
Patent GB-371978-A (GB)
Title: Improvements relating to flooring constructions and the like
IPC: E04B5/29
Filed: 1931-02-11
Abstract: 371,978. Floors. SHIPWRIGHT, W. G., 102, Abbey House, Victoria Street, London. Feb. 11, 1931, No. 4319. [Classes 20 (ii) and 20 (iv).] Hollow tiles b, Fig. 1, are supported from joists a by metal rods g having members h which engage under the top flanges d of the tiles b. In a modification, the rods g are replaced by metal plates having tongues which engage under the flanges d of the tiles b. Further tiles i may be employed to fill the spaces between the tiles b, these tiles i being formed with flanges j, which rest on bottom flanges k of the tiles b. The joists a are supported from main beams a<1> by metal or other plates l, Fig. 5, which rest upon the main beams a<1> and have their ends l<1> bent to engage under the top flanges a2 of the joists a, or the plates l may be replaced by rods formed with hooks which engage under the top flanges d of the joists a. Specification 331,481, [Class 20 (iv), Floors &c.], is referred to.
Patent GB-1242318-A (GB)
Title: Improvements in or relating to friction clutches
IPC: F16D13/58
Filed: 1969-01-27
Abstract: 1,242,318. Friction clutches. FICHTEL & SACHS A.G. 27 Jan., 1969 [6 Feb., 1968], No. 4411/69. Heading F2C. In a spring-applied friction clutch including a cover 1 and a pressure plate 3 urging a clutch disc 5 against a flywheel (not shown), the cover 1 is formed from a light weight metal, e.g. an aluminium or magnesium alloy, and has wear resistant reinforcements at those parts subjected to a high degree of stress. As shown, the clutch is applied by a diaphragm spring 2 which pivots about a reinforcement steel wire ring 7 in a groove in the cover, and which is released by withdrawing the inner circumference of the spring. The wire may be of substantially rectangular cross-section with a semi-circular pivot face, Fig. 4 (not shown). In Fig. 5 (not shown), a normal diaphragm spring is supported between two fulcrum rings (10) on spacer pins (13), a reinforcement steel annulus (9) being inserted between the cover and a fulcrum ring. The pins may have reinforcement steel bushes in the cover, and the bushes may be integral with the annulus. Drive straps between the pressure plate and cover, and fixed to the cover by pins, may have reinforcement bushes surrounding its pins. Again, Fig. 8 (not shown), the clutch is applied by helical springs and released by levers which are mounted on the cover by pins (18) through reinforcement bushes (19).
Patent GB-483171-A (GB)
Title: Apparatus for indicating the quantity of light required for copying cinematograph films
IPC: G01J1/42
Filed: 1937-02-15
Abstract: 483,171. Photo-electric photographic printing meters. ZUBKO. J., and MOSZCZYNSKI, E. Feb. 15, 1937, No. 4431. [Class 40 (i.ii)] Relates to apparatus for indicating the varying density of a negative kinematograph film, in order to determine the quantities of light required for printing the individual pictures, such apparatus comprising means for moving the film so as to bring the pictures successively between. a source of light and a photo-electric cell connected to art indicating device having a suitably graduated scale. According to the invention, a signalling device is provided, which operates under the control of the film to indicate the passage from each picture to the next. In the apparatus shown, the film 2 passes through a light-tight box 4 containing a photo-electric cell 6 which is connected to an indicating instrument 7, the pointer of which indicates the picture densities on a conventionally calibrated scale. Light from a lamp 8 passes through a window 5, and through the film, and is preferably scattered by a light-dispersing medium coated on a plate 16 and on the inside of the box 4, before falling on the cell 6. An acoustic or optical signalling device 13, actuated by means of a contact engaged by perforations &c. on the film, indicates the passage of each individual picture into position below the window 5. An observation device 12 facilitates framing of the pictures. The lamp 8 is fed from an accumulator 9, connected to which is an automatic switching-device 11 of known construction, which, after the lamp has burned for a determined number of hours, connects the lamp filament to the mains so as to burn it out and prevent it from functioning after the light emitted has begun to fall below a standard intensity. U.S.A. Specification 1,963,342 is referred to.
Patent GB-130691-A (GB)
Title: Improvements in or relating to Cars for Aerial Machines.
IPC: B64B1/00
Filed: 1918-03-14
Abstract: 130,691. Vickers, Ltd., and McKechnie, Sir J. March 14, 1918. Floats for aerial machines.-The car of an airship has a pneumatic buffer bag or bags O secured to the underside bv a watertight fabric covering P so as to provide a space of considerable volume around the bag to support the car on water. The bag is held in position by cords secured to flaps T, t. Rubbing cords R are provided on the covering P.
Patent GB-843176-A (GB)
Title: Improvements in or relating to electrical signalling systems
Inventor: BAKER GEORGE THOMAS
IPC: H04Q3/42
Filed: 1956-10-31
Abstract: 843,176. Automatic exchange systems. BRITISH TELECOMMUNICATIONS RESEARCH Ltd. Oct. 31, 1956, No. 4581/56. Divided out of 843,175. Class 40 (4). In a signalling system for the high-speed transmission of information in the form of a continuous succession of elements of equal duration each capable of having one or other of two values, one value of an element is represented by a signalling current comprising one cycle of the waveform produced by amplitude modulation of v.f. carrier current by a modulating waveform of constant frequency while the other value of an element is represented by absence of signalling current. The description is identical with that of Specification 843,175 but the claims differ. Specification 717,689 and 717,690 also are referred to.
Patent GB-219039-A (GB)
Title: Improvements relating to blower pipes for cleaning boiler tubes and the like
IPC: F28G3/16
Filed: 1923-02-16
Abstract: 219,039. Merrylees, A. U. Feb. 16, 1923. Cleaning, fluid pressure processes for. - Blower tubes for boiler tubes are protected from erosion by the hot furnace gases by a covering of firebrick 18 which extends around the tube and the nozzles. The blower tube shown is of the type described in Specification 187,749, and is rotated by a tonuny-bar inserted into radial holes in a collar 16, Fig. 1.
Patent GB-784495-A (GB)
Title: Improvements in feed chucks for automatlc screw machines and the like
IPC: B23B13/12
Filed: 1955-06-10
Abstract: 784,495. Lathe details. HARDINGE BROS., Inc. June 10, 1955 [Aug. 25, 1954], No. 4633/57. Divided out of 784,494. Class 83 (3). [Also in Group XXXII] A spring for use in the stock feed-tube 8, Fig. 2, of an automatic screw-machine &c. comprises an intermediate portion 14 to engage a stock-bar 10, the intermediate portion terminating in diverging inclined parts which finally extend parallel to the intermediate portion. A number of springs are arranged in recesses 11 in the feed-tube, and the cross-section of the intermediate part may be curved, Fig. 4, to engage round stock, or may be flat, Fig. 7, to engage the flat sides of square, hexagonal, &c., stock-bars. The springs are secured as described in Specification 784,494. The springs may be plated with hard and wear-resistant materials.
Patent GB-1245022-A (GB)
Title: Improvements relating to fibre-reactive heavy metal-containing formazane dyes and their use
IPC: C09B62/24
Filed: 1969-01-28
Abstract: 1,245,022. Reactive formazane dyes. J. R. GEIGY A.G. 28 Jan., 1969 [29 Jan., 1968], No. 4682/69. Addition to 1,161,006. Heading C4P. The invention comprises reactive metallized formazane dyes of formula wherein A and B are diazo components linked in o-positions, X and X<SP>1</SP> are metal-binding substituents, D and E are alternatively in one case the radical of a diazo component and in the other that of a coupling component, Me is a metal of atomic number 24-30, Y is a fluoropyrimidyl radical which may be further substituted, R is H or C 1-6 alkyl, Z is an acidic water-solubilizing group, n is 1 or 2, p is 1-6, s and t are 1 or 2, the sum of s+t being at least 3 and the substituent (NR<SP>1</SP>-Y) n is bound to A, B or E. The dyes are prepared by (a) reacting an appropriate amino-substituted metallized formazane with a polyfluoropyrimidine, (b) metallizing an appropriate fluoropyrimidylamino-formazane dye or (c) preparing the dye by sequential coupling reactions and metallizing and introducing the fluoropyrimidyl group at appropriate stages. The dyes colour cellulose fibres by the usual reactive dye processes in blue-red, brown, grey and green shades.
Patent GB-825603-A (GB)
Title: Improvements in bis-phenol-ketone condensation products and rubber compositions containing same
IPC: C08G8/02
Filed: 1956-02-15
Abstract: A condensation product from 1 mol. of a bis (3-methyl-4-hydroxyphenyl) alkane in which the alkylidene radical has 3-10 carbon atoms or is saturated and cyclic with 4-10 carbon atoms and 1.1 to 2.0 mols. of a ketone having 3-10 carbon atoms is incorporated into rubber prior to vulcanization to prevent discoloration and oxidation.  The term rubber includes natural and synthetic unsaturated rubbery polymers.  A number of typical diene synthetic rubbers are specified.  Suitable substituted alkanes mentioned are 2,2-bis (3-methyl-4-hydroxyphenyl) propane and 1,1-bis (3-methyl-4-hydroxyphenyl) cyclohexane.  Others may be prepared by acid condensation of o-cresol with a suitable ketone.  Suitable ketones for reaction with the substituted alkanes are acetone, methyl ethyl ketone, diethyl ketone, methyl propyl ketone, ethyl propyl ketone, methyl butyl ketone, cyclopentanone, cyclohexanone, cycloheptanone, cyclo - octanone, cyclodecanone, methyl cyclopentyl ketone, ethyl cyclopentyl ketone, and methyl or ethyl cyclohexyl ketone.  Condensation is preferably effected in presence of an acid agent, e.g. sulphuric or hydrochloric acid, aluminium or calcium chloride, if desired with a catalyst such as b -mercapto-propionic acid.  Reaction may be in an inert liquid, e.g. acetic acid, benzene, hexane, chlorobenzene or gasoline. The products are preferably added to rubber in proportions of 0.1 to 10% by weight.  In the examples: (I) a condensate is prepared from 2.2 - bis (3 - methyl - 4 - hydroxyphenyl) propane and acetone in presence of conc. HCl and some b -mercaptopropionic acid.  The product was mixed with natural rubber, channel black, zinc oxide, stearic acid sulphur, and benzothiazyl disulphide and cured.  Comparison was made with similar stocks containing no antioxidant or containing phenyl-b -naphthyl amine.  (II) The antioxidant is prepared from 2.2 - bis (3 - methyl - 4 - hydroxyphenyl) propane and cyclohexanone.  It is tested in the same tyre tread mix as was used in Example (1) and both antioxidants were also tested in a white sidewall rubber composition containing inter alia titanium dioxide and ultramarine blue.  Example (III): an antioxidant was prepared from 1,1-bis (3-methyl-4-hydroxyphenyl cyclohexane and acetone.
Patent GB-1406206-A (GB)
Title: Narrow gauge tufting machine
IPC: D05C15/14
Filed: 1974-02-01
Abstract: 1406206 Tufting machine B & J MACHINERY CO INC 1 Feb 1974 [1 Feb 1973] 04853/74 Heading D1G A tufting machine comprises means for feeding backing material longitudinally along a path of travel, a pair of needles 24a, 24b longitudinally and laterally offset from each other and a looper mounted for concurrent longitudinal and lateral reciprocation to engage both needles. The loopers 35 which have beaks extending in the oblique direction defined by needles 24a, 24b are mounted in a bar 52 carried by a slide 40 received in transverse slots in the ends of arms 36. As the latter oscillate to move the loopers longitudinally slots 50, in plates 49 secured to slide 40, cooperate with fixed pins 46 to move the slide and its loopers laterally. The provision of one looper for two nedles permits the machine gauge to be minimised.
Patent GB-1432401-A (GB)
Title: Ball bearing assembly mounted on and linearly movable along a circular shaft
IPC: F16C29/00
Filed: 1974-02-01
Abstract: 1432401 Bearings ROCKWELL INTERNATIONAL CORP 1 Feb 1974 [15 March 1973] 04855/74 Heading F2A A shaft 38, mounted for rectilinear motion in a recirculating ball bearing assembly comprising concentrically fitting inner and outer sleeves 12, 14, is provided with a plurality of longitudinally extending shallow grooves 39 which constitute generally conforming bearing raceways for said balls. The vertical depth of each said raceway is substantially equal to 7¢% of the diameter of said balls.
Patent GB-1034435-A (GB)
Title: Double beam discharge lamp
IPC: G01J3/10
Filed: 1963-02-06
Abstract: 1,034,435. Metal-vapour-lamps. BECKMAN INSTRUMENTS Inc. Feb. 6, 1963 [March 26, 1962], No. 4926/63. Heading H1D. [Also in Division G1] A double-beam lamp for use in a fluorometer (see Division G1) comprises a single cathode disposed between two anodes 55, 56, and a shield 57 defining two optically isolated areas each including the cathode and an anode so that by applying a positive voltage to the respective anodes in alternate periods of an electrical supply cycle, radiation is emitted in different directions in said alternate periods. The cathode comprises a heater wire 53 in a box-like structure 54 provided with a peripheral shoulder 60, Fig. 5 (not shown) for supporting the cathode on the lower spacer plate 59. The shield 57 encloses the cathode except for apertures 64 facing the anodes which have apertures 68. The shield has wings 66 and fins 69 which collect positive ions and concentrate the discharge. An envelope enclosing the electrodes is provided with a groove 48, Fig. 2 (not shown), for engagement with a U-shaped clamp to remove the lamp from its socket. The envelope is filled with a gas, e.g. mercury vapour at a pressure of 6 to 10 microns, and may have a phosphor coating.
Patent GB-1048225-A (GB)
Title: Acetone-insoluble polymeric methyl methacrylate
IPC: C08F20/14
Filed: 1964-02-05
Abstract: A viscous, liquid, methyl methacrylate-zinc chloride complex is prepared by dissolving zinc chloride in excess methyl methacrylate in the absence of moisture and light, and distilling off the excess methyl methacrylate.  In an example, dissolution is effected at 60 DEG  C.  The complex contains from 0.5 to 2 mol. of methyl methacrylate per mol. of zinc chloride, depending on the conditions used.  It is used to prepare a high molecular weight polymethyl methacrylate (see Division C3).ALSO:An acetone-insoluble polymeric methyl methacrylate containing 0-0.5% by weight of complexed zinc chloride and having a number average molecular weight of at least one million and a softening point of from 200-240 DEG  C. is prepared by polymerizing a complex of methyl methacrylate and zinc chloride (containing 0.5 to 2 mol. of methacrylate per mol. of zinc chloride) in the absence of free methyl methacrylate and in the presence of a catalyst which is U.V. light, visible light, nuclear radiation (e.g. from Co60) or a compound acting as a free radical polymerization initiator, and then dissolving the crude product thus obtained in chloroform, mixing the solution with methanolic hydrochloric acid, isolating the precipitated polymer, treating the polymer with hydrochloric acid to remove the zinc chloride liberated, heating the product with acetone, and isolating the acetone-insoluble polymer. The free radical initiator compound may be an azoor peroxy-compound, e.g. azobisisobutyronitrile or benzoyl peroxide, which may be used as a solution in benzene.
Patent GB-106457-A (GB)
Title: Improved Telephone Appliance.
Inventor: MAYER FELIX
IPC: H04M1/19
Filed: 1917-04-05
Abstract: 106,457. Mayer, F. April 5, 1917. Mouthpieces.-The back-plate b, to which a plate a carrying the mouthpiece of a telephone is pivoted, as described in Specification 105028, is secured to the plate of the microphone chamber by means of a bush i, one end of which is secured into the plate of the microphone chamber while the other end is engaged by a collar f which is tightened upon the bush i by means of a screw h. The collar f is provided with the housing l of a spring-pressed ball k adapted to engage elongated recesses in the front plate a. The spring-pressed ball may be replaced by a leaf-spring.
Patent GB-1379525-A (GB)
Title: Electrical connector
IPC: H01R13/523
Filed: 1973-02-01
Abstract: 1379525 Two-part couplings STANDARD TELEPHONES & CABLES Ltd 1 Feb 1973 5077/73 Heading H2E In a two-part coupling, one part 2 comprises one or more socket contacts 16 extending into one end of a cavity 20 in the one part, the other end of the cavity being closed by a diaphragm 18 which is penetrable by pin contacts 6 of the other part 1 during coupling, the cavity being filled with a grease, jelly, or similarly viscous liquid. The pin contacts 6 are held in a moulded housing 3 comprising a sleeve 3a and extending portions 8 surrounding part of the pin contacts which are connected to cable conductors by crimped sleeves 7. The cavity 20 is defined by a sleeve 12a being part of the housing 12 of the socket part 2 and having a shoulder 17 to support the diaphragm 20 formed with a metal support ring 19. During coupling the pins 6 penetrate the diaphragm 18, sleeve 12a telescopes within sleeve 3a, an alignment groove 13 sliding along a complementary ridge 11 and pins 6 mate with socket contacts 16. The coupling may be effected under water with the contacts 16 live and water within the sleeve 3a escaping via holes 9, 10. Ridges (22, 23) and a gripping ridge (24) may be formed on the exterior of the housings to aid manipulation during coupling. The contacts may be of a coaxial type.
Patent GB-551145-A (GB)
Title: Automatic guard and actuating means therefor for wood turning machines
IPC: B27G21/00
Filed: 1942-04-17
Abstract: 551,145. Machinery guards. MARVIN, A., and PHILBEDGE, V. J. April 17, 1942, No. 5098. [Class 80 (iv)] [Also in Group XXII] Consists in a guard for wood-turning machines particularly of the type wherein the workpiece is mounted between centres on a sliding saddle and can be moved toward or away from a rotary bladed cutter. The workpiece 8 is mounted between centres in headstock 9 and tailstock 10 on a saddle 1 which can be moved over a bed 2 by a lever 3 and linkages 5, 6. The cutter (not shown) is enclosed by a main fixed guard 7. Subsidiary movable guards 11, 12 are provided, the guard 11 being adapted to shield the cutter when the work is being centred on the device 19, and the guard 12 being adapted to cover the work when it has been advanced to the cutter. The guards 11, 12 are mounted on frames 13, 14 respectively which are pivoted at 15 and carry rollers 13b, 14b engaging oppositelydisposed cam tracks formed from a metal strip 16. The arrangement is such that on moving the saddle 1, the guards move, one up and the other down, thus counterbalancing one another.