baber/WOPTO huggingface dataset:
Patent GB-1183035-A (GB)
Title: Stabilised Polyurethanes
Inventor: BRIGGS PETER JAMES
IPC: C08K5/5398
Filed: 1966-06-22
Abstract: 1,183,035. Stabilizing polyurethanes. IMPERIAL CHEMICAL INDUSTRIES Ltd. 14 June, 1967 [22 June, 1966], No. 27869/66. Headings C3C and C3R. Polyurethanes are stabilized against the adverse effects of light, oxygen and oxides of nitrogen by incorporating, either during or after the formation of the polyurethane, a nickel di(hydrocarbyl) dithiophosphate which is a nickel salt of an acid of the formula wherein R and R<SP>1</SP> are the same or different hydrocarbon or substituted hydrocarbon radicals, or a combination of nickel and zinc compounds selected from di(hydrocarbyl) dithiophosphates and #-keto-enolates of the formula wherein M is nickel or zinc and X, Y and Z independently represent hydrogen atoms or alkyl, cycloalkyl, aralkyl, aryl, alkoxy or carbalkoxy groups, or X and Y together may form the residue of an aromatic system, at least one of the compounds being a di(hydrocarbyl) dithiophosphate. The polyurethanes may be foamed and are prepared from conventional polyols e.g. polyethers and polyesters and polyisocyanates. Suitable amounts of the stabilizing agent(s) are 0.01 to 5% by weight based on the weight of the polyurethane. Preferred di(hydrocarbyl) dithiophosphates are nickel or zinc dinonyldithiophosphate, diisopropyldithiophosphate, diphenyldithiophosphate or salts of the di- (hydrocarbyl) dithiophosphoric acids that are the reaction products of phosphorus pentasulphide with polyalkylene ethers of aliphatic monohydric alcohols or polyalkylene polyols. Suitable #-keto-enolates are the nickel and zinc complexes of acetyl acetone, benzoyl acetone, dibenzoylmethane, ethyl acetoacetate, diethylmalonate, salicylaldehyde, 2 - hydroxybenzophenone and 2 - hydroxy - 4 - alkoxybenzophenones. Other stabilizing agents such as phosphites, hydrophosphites, thiophosphites, thioether and phenols may also be used.
Patent GB-188505-A (GB)
Title: Improvements in and relating to radio signalling systems
IPC: H01Q5/00
Filed: 1921-10-20
Abstract: 188,505. British Thomson - Houston Co., Ltd., (General Electric Co.). Oct. 20, 1921. Multiplex signalling; undesired signals, eliminating; directive signalling; aerials.-In receiving apparatus employing a long horizontal aerial grounded at one or both.ends, means are provided for receiving several signals simultaneously on different wave-lengths and for eliminating disturbing signals such as those arising from waves travelling in the opposite direction to the desired waves. As shown, the aerial comprises two parallel wires 1, 2 grounded at opposite ends 3, 4. The desired signal waves which approach the aerial from the end 3 set up currents in the wires 1, 2 which grow in amplitude towards the end 4 and pass through the halves of the coil 6 in parallel, and through coils 5 to earth. These currents induce currents round the circuit 6, 1, 8, 2 and energize the receiving apparatus 15, 16, 17 which are tuned to various frequencies bv the circuits 12, 13, 14. Undesired signal waves such as those travelling from end 4 may also produce small effects in the receiving-apparatus, and in order to eliminate this interference the earth connection at end 3 includes a resistance 18 approximately equal to the surge impedance of the aerial, and a number of parallel branches each including adjustable capacity, inductance, and resistance 24. Each parallel branch has its constants adjusted so as to produce sufficient reflection to neutralize the effects of the undesired signals in one of the receivers.
Patent GB-666752-A (GB)
Title: Production of sulfur dioxide
IPC: C01B17/52
Filed: 1949-11-01
Abstract: Sulphur dioxide is obtained by the oxidation of a sulphur-containing raw material which yields sulphur dioxide on oxidation or sulphur on distillation by contacting the material with a dense turbulent fluidized mass of a finely divided solid oxygen carrier having an oxidizing potential <PICT:0666752/III/1> sufficient to oxidize sulphur completely to sulphur dioxide but insufficient to oxidize the sulphur beyond sulphur dioxide, at a temperature sufficiently high to cause the reaction but below the sintering temperature of the carrier and withdrawing substantially pure sulphur dioxide from the mass. Finely ground iron pyrites is fed from a hopper 1 into a dense fluidized mass of ferric oxide particles having a temperature of 700-900 DEG C in a generator 5, pure sulphur dioxide leaving through a line 17.  The ferric oxide is converted to ferrous-ferric oxide which passes in fluidized form through a line 20 to the top part of a ferric oxide regenerator 25 where ferric oxide is produced by the action of air at a temperature of 850-1100 DEG C supplied through a line 29. The regenerated fluidized ferric oxide returns to the generator 5 through a pipe 40.  Preferably, part or all of the spent solids withdrawn from generator 5 are passed to a fluidized soaking vessel 45 to prolong the contact of the sulphide with the iron oxide on their way to the regenerator 25, the oxidation being completed if desired by the admission of a little air through a line 49.  Sulphur dioxide may be recycled from line 17 through lines 18 and 9 to the bottom of the generator 5, and if pure sulphur dioxide is to be produced in the soaker 45, through a line 48.  Sulphur vapour, hydrogen sulphide, ferrous sulphide or arsenopyrites may be fed to the generator 5 instead of iron pyrites.
Patent GB-503860-A (GB)
Title: Improvements in or relating to method of obtaining indications of the pressure and/or variation of pressure in the cylinder of an internal combustion engine
IPC: F02B77/08
Filed: 1937-10-15
Abstract: 503,860. Cylinder indicator connections. STANDARD TELEPHONES & CABLES, Ltd., BEALE, E. S. L., and STANSFIELD, R. Oct. 15, 1937, No. 28114. [Class 122 (i)] A hole 7, of not more than #" in diameter, is provided in an engine cylinder for passage of gas to an indicator unit 3 and the walls of the hole, are formed to provide a series of constrictions whereby the gas undergoes a number of changes of direction in its passage through the hole and resonance effects are damped out. Alternatively to constrictions, a rod 8 having spaced flattened portions 9, 11, 13 at right-angles one to the other, or a strip 22, Fig. 4, shaped as shown may be inserted in to the hole for the same purpose. The hole may be formed in the cylinder wall itself or in an adapter screwed into the wall and passing through the water jacket.
Patent GB-925408-A (GB)
Title: Suspension polymerization method
IPC: C08F2/44
Filed: 1961-08-03
Abstract: Bead polymers are produced by suspension polymerization of unsaturated monomers using as a suspension stabilizer a difficulty water-soluble material and a soluble propyl acid phosphate in an amount between 0,05% and 3% by weight of the total suspension. The propyl acid phosphate may be lithium, sodium, potassium, magnesium or calcium propyl phosphate.  The difficulty soluble material may be calcium, strontium or magnesium hydroxy phosphate. Monomers used in examples are acrylonitrile/styrene, styrene, styrene/a -methyl styrene/acrylonitrile and methyl methacrylate. Chain transfer agents such as dodecyl mercaptan, carbon disulphide, tetraethyl thiuram disulphide may be present. Auxiliary surface-active agents such as potassium sulphide and a blue dye may be incorporated in the suspension.
Patent GB-391174-A (GB)
Title: Process for the production of two- or three-colour photographs and cinematograph films
IPC: G03C7/26
Filed: 1931-10-12
Abstract: 391,174. Colour photography. ANDERSEN, P. S. R., 14, Ulrich Birchs AllÚ, Copenhagen. Oct. 12, 1931, No. 28325. Convention date, Oct. 17, 1930. [Class 98 (ii).] Two- or three-colour photographs and kinematograph films are obtained by exposing a double-coated negative film having on the front side of the support B an orthochromatic emulsion layer A mixed with or applied over a yellow filter dye, and a panchromatic rear layer C ; after developing, the images in the two layers are converted into hardened gelatin reliefs, that in the layer A is allowed to absorb a red dye in the unhardened portions and a layer of grease is applied by a roll passed over the surface of the images in the layer C, as indicated in Fig. 4 ; a positive film or paper is then pressed into contact with the layer C and exposed to light and the light and grease impressions are subsequently converted into appropriate coloured images. For three-colour work, the exposed positive is developed and the image converted, in the dark, into a Prussian blue image ; the layer of grease is then removed and the latent green image is deveoped and converted to a chrome yellow image by a lead toning bath ; finally, the positive is exposed to light and the remaining image is developed and converted to a red image by a uranium toning bath. Alternatively, the images may be converted into diachromes. For two-colour work, the emulsion in the layer A is arranged to pass only red rays which are recorded in the layer C ; the procedure is otherwise similar to that for three-colour work. The Specification as open to inspection under Sect. 91 describes a modified three-colour process according to which the negative images in the layer C are treated according to the pigment process so as to absorb colour substances which are transferred directly to the positive. This subject-matter does not appear in the Specification as accepted.
Patent GB-1488746-A (GB)
Title: Grinding machines
IPC: B24B41/06
Filed: 1976-05-11
Abstract: 1488746 Grinding NEWALL ENG CO Ltd 11 May 1976 [4 July 1975] 28349/75 Addition to 1327894 Heading B3D A machine for grinding a workpiece 1 having a first cylindrical surface 2, comprises means 5 for grinding a second surface 4 to a desired contour coaxial to the first surface, a relatively stationary mandrel 3 having passageways 7, 8 coupled to a pneumatic source for feeding and maintaining a gas bearing between the mandrel and the first surface, and means for rotating the workpiece comprising a rotary face plate 9 supported for rotation on the mandrel on a further gas bearing fed by passageways 13, 23, the further gas bearing including two opposed axial thrust bearings 20, 21 one on each side of a radial flange 22 on the face plate, means 27, 28, 29 for rotating the face plate, and a clamp 14 operable by pneumatic pressure to clamp the workpiece against the face plate for rotation therewith. As described, the workpiece 1 is a bearing ring rotatably mounted with its inner cylindrical surface 6 supported on the mandrel surface 2 by a gas bearing supplied with pneumatic pressure through passageways 7, 8. The face plate 9 is rotatably supported on a second cylindrical surface 11 on the mandrel by a second gas bearing supplied with pneumatic pressure through passageways 13. The radial flange 22 of the face plate extends between radial flanges 3a, 3b of the mandrel and its opposed axial thrust bearings 20, 21 are supplied with pneumatic pressure by passageways 23. The workpiece is clamped to the face plate for rotation therewith by a clamp ring 14 mounted on an annular piston 15 which is located in a cylinder and journalled for rotation on a member 19. Rotation of the face plate is effected by a peg 27 engaging a hole 28 in the face plate and carried by a member 29 rotatably driven about the axis of the mandrel. Permanent magnets may be provided on the clamp ring 14 to draw the workpiece from the mandrel when the piston and clamp ring are retracted during unloading of the workpiece.
Patent GB-327981-A (GB)
Title: Improvements in and relating to coating compositions and the like
IPC: C09D107/00
Filed: 1928-10-03
Abstract: 327,981. Imperial Chemical Industries, Ltd., (Du Pont de Nemours & Co., E. I.). Oct. 3, 1928. Coating-compositions comprise rubber, an oil, and an inhibitor to decrease the rate of loss of body or viscosity on exposure to air, the inhibitor comprising an organic aromatic compound having reducing properties and containing at least one hydroxy group together with one or more further hydroxy groups or one or more amino groups. Suitable inhibitors are polyhydric phenols such as hydroquinone or pyrogallol, and hydroxy-amino compouunds such as paraaminophenol. Tannic acid may also be used. Animal, vegetable or mineral oils, whether drying, semi-drying, or non- drying may be used, as well as' blown or ozonized oils. The composition may include driers such as salts of cobalt, lead or manganese, and pigments such as ultramarine blues; iron blues, for example, Prussian blue; zinc-oxide; lampblack; lead chromate pigments or certain mixtures thereof. The rubber is preferably crude Hevea rubber, but balata, gutta-percha, partly or wholly vulcanized rubber, reclaim rubber &c. may be employed. The rubber should not be heated above 300‹ F. during mixing or afterwards. The compositions are preferably made by mixing a solution of rubber with the oil, thinning the mixture with a volatile solvent to a suitable consistency for coating and then incorporating the inhibitor. In an example, 100 parts of unvulcanized rubber dissolved in a solvent are mixed with 20-50 parts of a drying oil, with or without a cobalt drier such as cobalt linoleate up to 0.1 per cent of the oil by weight. The mixture is thinned with a volatile solvent and 1-10 per cent (by weight of the rubber) of hydroquinone is added.
Patent GB-405752-A (GB)
Title: Improvements in and relating to devices for feeding articles to a machine
IPC: B65G47/14
Filed: 1932-10-12
Abstract: 405,752. Feeding articles from hoppers and shoots. BRITISH THOMSONHOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Donovan, J. F. ; 1869, Chapman Avenue, and Illingworth, G. ; 1889, Windermere Street, both in East Cleveland, Ohio, U.S.A.) Oct. 12, 1932, No. 28472. Convention date, Oct. 14, 1931. [Class 117.] A device for feeding articles such as miniature incandescent lamp bulbs to a bulb neck cutting machine &c., having a continuously rotating head, comprises a shoot 33, Figs. 1 and 3 along which the bulbs slide by gravity. The shoot is pivoted at 41 and is oscillated in a horizontal plane by the rock-shaft 45 with arms 43, 44 which is actuated by a face cam 48 on the main shaft 27 of the machine. Stationary fingers 53, 59 act as an escapement device to permit movement of the bulbs one at a time on to a horizontal part at the lower end of the shoot. A third stationary finger 56 with inclined end serves to discharge the separated bulbs, to the clamp 55 of the cutting machine with a movement which follows the movement of the rotary head. An air jet 61 maintains the separated bulb in a substantially vertical position. A finger 60 and cover 40 prevent over-riding. The stock of bulbs is contained in a hopper 11 from which they are lifted by an oscillating segment 12 and delivered to the shoot. The segment is driven by a lever 13 and a cam 21 on the counter-shaft 23 which is geared to the main shaft 27. To prevent the segment being held up temporarily by bits of broken glass and then falling heavily, a safety device is provided consisting of a finger 34 adapted to engage the pin 38 in the top position of the segment. The finger is temporarily released by a cam 37 at the beginning of the downward movement of the segment. The rock-shaft 14 which actuates the lever 13 also drives through the resilient connection 66 an oscillating brush 62 which sweeps wrongly positioned bulbs back into the hopper. An air jet 39 assists the downward movement of the bulbs.
Patent GB-535861-A (GB)
Title: Improvements relating to alternating electric current control apparatus
IPC: G05B11/01
Filed: 1939-10-23
Abstract: 535,861. Magnetic amplifiers. WESTING- HOUSE BRAKE & SIGNAL CO., Ltd., STEVENS, S. A., and' WALKER, A. H. B. Oct. 23, 1939, No. 28491. [Class 40 (iv)] [Also in Group XXXV] A magnetic amplifier with a regenerative or feed-back characteristic comprises two reactance windings 1, 2 connected in parallel in the controlled circuit and supplied in series with rectified A.C. derived from a series or current transformer T in the said circuit, one magnetic core of the reactances being provided with a saturating winding or windings 11, 12 traversed by a control current. The degree of feed-back may be controlled by varying the transformer ratio or by an adjustable resistance 20 in parallel with its primary or secondary winding. The condensers C<SP>1</SP>, C<SP>2</SP> provided according to Fig. 1 are eliminated by the arrangement shown in Fig. 4.
Patent GB-536227-A (GB)
Title: Manufacture of therapeutical materials
IPC: A61K33/30
Filed: 1939-10-23
Abstract: 536,227. Zinc peroxide. DU PONT DE NEMOURS & CO., E. I. Oct. 23, 1939, No. 28500. Convention date, Oct. 21, 1938. [Class 1 (iii)] Zinc peroxide, in which small quantities of activating agents are incorporated is obtained by reacting a zinc compound with active oxygen yielding compounds of the type of hydrogen peroxide, alkali and alkaline earth peroxides and persalts, a small quantity, i.e. 9-40 parts per million parts of zinc peroxide of a copper or managanese compound being present in the reaction.
Patent GB-874507-A (GB)
Title: Method for isomerizing olefins
IPC: C07C11/02
Filed: 1959-08-21
Abstract: Internal olefins are isomerised to a -olefins by first converting to the corresponding boron alkyl, heating the boron alkyl to above 100 DEG C. for a time sufficient to cause isomerisation and recovering the isomerised olefin from the boron alkyl.  Mixtures of olefins which may also contain saturated or aromatic hydrocarbons may be treated; C4-C24 olefins may be treated including branched chain olefins such as tetrapropylene and alkenyl cycloalkanes or alkenyl aromatics.  The boron alkyl may be prepared (1) by reaction with diborane, (2) by reaction in ether-type solvents with reagents producing diborane, e.g. NaBH4 + BF3.Et2O or (3) by a displacement reaction with a different boron trialkyl.  Reaction (1) may be effected at - 50 to 150 DEG C. and 0-2,000 p.s.i.g., reaction (2) at -50 to 150 DEG C. and atmospheric pressure and reaction (3) at 50-250 DEG C. and 0-3,500 p.s.i.g.  Non-olefinic materials do not react and may be separated.  Isomerisation may be effected at 100-250 DEG C. and may be combined either with the formation of the boron alkyl or the recovery of the olefin.  Recovery of the olefin may be by thermal decomposition to diborane or alkylborohydrides at 150-350 DEG C. and atmospheric or reduced pressure or by displacement with a different olefin to give a different boron trialkyl and the required olefin. The boron trialkyl may be recycled as such for further formation of boron alkyl by method (3) or reduced to diborane and recycled for use in method (1). Displacement may be effected at 50-250 DEG C. and 0-3500 p.s.i.g., if desired in the presence of nickel, cobalt, chromium dibenzene, ferrocene or cyclopentadienyl nickel and an amine or ether; preferably the desired olefin is removed as it is formed. Ethylene is the preferred displacing olefin.
Patent GB-625285-A (GB)
Title: Improvements in or relating to oscillating mechanisms used for sifting or conveying
IPC: B07B1/46
Filed: 1946-09-25
Abstract: 625,285. Vibrating screens. BUHLER BROS. Sept. 25, 1946, No. 28702. Convention date, Sept. 28, 1945. '[Class 117] [Also in Group XXX] In apparatus comprising a sieve, conveyer duct or the like capable of being oscillated, the sieve or the like is rollersupported on rails, the inclination of which to the horizontal is adjustable during operation apparatus. In a frame 1, Fig. 1, having the usual free-swinging or eccentric drive, are mounted a sieve cloth or mesh 2, and two axles 3, Fig. 2, on the ends of which are mounted rollers 4 suppported on rails 5. Each pair of rails 5 is secured by set-screws 6 to a shaft 7 moving in bearings 8 mounted in the machine frame 9. Each of the shafts 7 may be moved through a small angle by a lever 10 secured to it by a screw 11. With the rails 5 parallel to the cloth 2, as in Fig. 1, the material to be sifted moves in the direction of arrows a. When the rails 5 are inclined at an angle x, the material moves in the direction of arrows b, and when inclined at an angle B the material moves in the direction of arrows c. A conveyer channel or pipe may take the place of the sieve 1.
Patent GB-742692-A (GB)
Title: Fluid discharge nozzles
Inventor: MCCOY CLARENCE DOUGLAS
IPC: B05B1/10
Filed: 1953-10-19
Abstract: 742,692. Nozzles. LUCAS (INDUSTRIES), Ltd., J. Oct. 12, 1954 [Oct. 19, 1953], No. 28748/53. Class 69 (3). A cap g with a lateral outlet h is rotatably mounted on the end of a part a screwed to a fitting c fed with liquid from a pipe d. The cap is secured by a spring ring j and a liquid seal is provided by a resilient ring f compressed between conical surfaces of the parts. Liquid flows through a bore b to the outlet which may be arranged to direct the jet on to a vehicle windscreen.
Patent GB-844844-A (GB)
Title: Improvements in and relating to the production of rubber rings
IPC: B29C67/00
Filed: 1955-10-10
Abstract: 844,844. Moulding rubber rings. ANGUS & CO. Ltd., G., JAGGER, E. T., and WALTON, B. Oct. 8, 1956 [Oct. 10, 1955], No. 28749/55. Class 87(2). In the moulding of a rubber ring 7 by rolling the rubber between a mandrel 5 and a cylinder 4 reciprocated by pneumatic piston 3 controlled automatically by valves 9, 10, distortion of the ring due to excess of pressure caused by the dwell of the cylinder at each end of its stroke is prevented by varying the relative reciprocation of the mandrel and cylinder. As shown in Fig. 4 the position of the valves 9, 10 is varied for different strokes by a pneumatic piston 16 controlled by a cam 22. The strokes may be so varied that the position of excessive pressure occurs at positions on the ring displaced by 90 degrees in order that they may cancel each other out and prevent the formation of an oval ring. Specification 844,843 is referred to.
Patent GB-243708-A (GB)
Title: Improvements in, and connected with, automatic temperature controls for toasters forbread or other materials
IPC: A47J37/08
Filed: 1925-11-14
Abstract: 243,708. Hurxthal, F. E., and Hurxthal, A. O. Dec. 1, 1924, [Convention date]. Toasting-apparatus.-A toasting-appliance is provided with a sensitive element which lies in contact with the surface which is being toasted and assumes the temperature thereof, the element being associated with means which withdraw the bread from the heaters or operate a visible or audible' signal when the toasting is complete. As shown in Fig. 1, the slice holder 6 of an electric toaster is pivoted at 7 and is retained in the toasting position by a pawl 14 which engages notches 10 on a bracket 9. The pawl 14 is carried by a lever 11 balanced at 12 on a knifeedge and positioned by the opposed forces of a spring 15 and the sensitive element or wire 17. The wire 17 lies against the slice and is adjusted by a screw 19. Expansion of the wire 17 allows the pawl 14 gradually to be raised from the notches 10 and allows the holder 6 to pivot downwards away from the heaters. As shown in Fig. 5, the wire 17<a> is secured to a contact maker 20 which is in circuit with the wires 29, 30 of the heating-elements, a contact breaker 26 and a solenoid 22. Expansion of the wire 17<a> makes contact between the parts 27, 28 which causes the core 23 of the solenoid 22 to move axially and break the circuit. The head 24 of the core 23 engages a projection on the pivoted slice holder which is thereby swung away from the heaters. In a modification, the head 24 is arranged to operate a switch in the heater circuit. In further modifications, the contact maker is placed in a buzzer or lamp circuit, and a duplex arrangement for use with two slice holders is described. Two or more wires or other expansion elements may be used.