baber/WOPTO huggingface dataset:
Patent GB-863466-A (GB)
Title: Production of foamed elastomers
Inventor: DAVEY WALTER CECIL
IPC: C08G18/69
Filed: 1956-10-16
Abstract: A process for the production of foamed elastomers comprises reacting (a) a liquid copolymer of a conjugated diolefine and an aliphatic unsaturated carboxylic acid containing up to six carbon atoms in the molecule with (b) an organic polyisocyanate in the presence of a cross-linking agent.  The amount of organic-polyisocyanate used is preferably in excess of that which is equivalent to the acid content of the copolymer.  Suitable copolymers are those having a viscosity of 10 to 100 poises at 70 DEG .  They can be prepared by emulsion polymerisation or by chemical modification of other polymers (see Group IV(a)).  As cross-linking agents there are specified water, and a number of polybasic carboxylic acids, polyhydric alcohols, polyamines and aminoalcohols.  In preparing the foamed elastomers a liquid or low melting point hydroxy group-terminated reaction product of a polyester or polyether with a polyisocyanate can be incorporated with the copolymer and polyisocyanate mixture, with further cross-linking agents if necessary.  The rate of the reaction can be increased by adding such bases as diphenylamine, p-phenylenediamine, diphenylguanidine, guanidine, aniline, benzidine, o, o1-dichlorobenzidine, anisidine, aminopyridine, 2-2-dipyridylamine, p-phenylenediamine, 2-amino-4 : 6-dimethylpyridine, hexamethylenetetramine, hydrazine hydrate, calcium hydroxide and ammonium carbonate and retarded by the agents described in Specifications 790,543, 791,956, 831,301 and 831,302.  In examples butadiene (90 parts) and methacrylic acid (10 parts) were copolymerised.  The polymer was converted to foamed products by (1) reaction with 2 : 4-toluene diisocyanate, followed by the addition of further diisocyanate, water and pyridine; (2) and (3) addition of mixed 2 : 4- and 2; 6-toluene diisocyanates and (2) adipic acid; (3) succinic acid; (4) additions as in (2) together with pyridine.
Patent GB-314132-A (GB)
Abstract: 314,132. Dreyfus, H. March 27, 1928. Acetic and other aliphatic anhydrides are produced bv heating the vapour of the acid mixture with at least 2 per cent of a hydrohalide acid, namely, hydrochloric, hydrobromic, or hydriodic acid. The reaction may be effected at 100-900‹ C. with or without catalysts such as carborundum, pumice, and kieselguhr, and fireclay, silica, or other tubes may be employed. The reaction mixture may be made by mixing the hydrohalide acid with the organic acid vapour, or the hydrohalide acid may be passed through the boiling organic acid. In another modification, the liquid organic acid containing the hydrohalide acid may be injected into a hot apparatus. The reaction vapours may be treated in any suitable manner to recover the anhydride, and may be passed over sodium or other acetate prior to the condensation of the anhydride, or the anhydride when condensed may be distilled with anhydrous sodium or other acetate. The anhydride may be separated by passing the vapours through a fractionating column at a temperature between the boiling- points of water and the anhydride; or the vapours may be passed through one or more solvents for the anhydride of higher boiling-point than water. such as chlorbenzene, p-dichlorbenzene, benzyl ether, tetrachlorethane, paraffin oil, triacetin, phenetol, anisol, one or more cresols, and p-cresyl acetate; or the vapours may be condensed in presence of the vapour of an entraining liquid which carries away the water vapour, as described in Specification 303,772; or the vapours mav be led under the surface of an extracting liquid insoluble in water and maintained below the boiling- point of water, as described in Specification 298,667; or the vapours may be passed over one or more water-binding substances below the temperature at which the reaction vapours are produced, but preferably above the boiling-point of water, as described in Specification 289,972. In an example a mixture of acetic acid with hydrochloric acid is passed rapidly through a fireclay or silica tube at 500-600‹ C., the vapours being then passed over sodium acetate and then through a fractionating column maintained at a temperature between the boiling-points of water and the anhydride.
Patent GB-510407-A (GB)
Title: A method of improving the stability of alkaline solutions containing azo dyestuff components of an exclusively phenolic nature
IPC: G03C1/61
Filed: 1938-11-01
Abstract: 510,407. Stabilizing solutions of phenols. NAAMLOOZEVENNOOTSCHAP CHEMISCHE FABRIEK L. VAN DER GRINTEN. Nov. 1, 1938, No. 31645. Convention date, Nov. 5, 1937. [Class 2 (iii)] [Also in Group XX] The stability of alkaline solutions containing azo dyestuff components of an exclusively phenolic nature, e.g. diazotype developing solutions, is improved by adding to said solutions, or to the components of which said solutions are prepared, a small quantity of a tin compound which is soluble in said alkaline solutions. Tin compounds specified are stannous and stannic chloride, stannates, stannites, and chlorostannates, and phenols specified are phloroglucinol, resorcinol, and #-naphthol, but hydroquinone (which is not an azo-dye component) and aminophenols (which are not exclusively phenolic) are specifically excluded. The quantity of tin compound should not be more than 1 per cent. of the weight of solution. In an example, 0.1 per.cent. of sodium stannate is added to a diazotype developing solution containing 6 per cent. sodium thiosulphate, 2 per cent. thiourea, 1 per cent. borax, 1.5 per cent. of soda, 2 per cent. of resorcinol.
Patent GB-299789-A (GB)
Title: Improvements in and relating to electrical regulators
IPC: H02P9/24
Filed: 1928-10-31
Abstract: 299,789. British Thomson-Houston Co., Ltd., (Assignees of Winter, F. H.). Oct. 31, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Regulation, automatic.-In regulators operating upon a resistance in an excitation circuit to control a characteristic of a dynamo-electric machine, an anti-hunting coil is responsive to the rate of change of a characteristic of the excitation circuit. In a direct-current generator 2, Fig. 1, with its field supplied by an exciter 6, the regulator 9 periodically short-circuits, through a relay or directly as shown, a resistance 8 in series with the field 7 of the exciter 6 and has two coils 14, 15. The coil 14 is energized in accordance with the voltage or other characteristic of the circuit 4, so that this characteristic is controlled The anti-hunting coil 15 is connected to the secondary 18 of a transformer across the excitation circuit and is thus responsive to the rate of change of the voltage in this circuit, the flux of the coil 15 adding to that of the coil 14 when the voltage is rising. In a modification, the coil 15 is omitted and the coils 14, 18 are connected in series across the circuit 4. In an alternating-current generator 20, Fig. 3, a resistance 27 in series with a resistance 26 in the field circuit of the exciter 24 is shorted by a relay 32 controlled by the regulator 37. The control coil 40 of the regulator is energized according to the voltage of the circuit 21. The antihunting coil 42 is connected to a transformer 45 connected to the resistance 26 so that the coil 42 is responsive to the rate of change of the current in the exciter field circuit, or the transformer 45 may be connected across the exciter field coil or the generator field coil 22. The coil 42 is on a separate polarized core 43, which may be a permanent magnet or an electromagnet. A variable number of turns of a coil 48 on the core 43, Fig. 3, or on the regulator core in Fig. 1, are short-circuited to adjust the time of response of the coil 42 according to the speed of response of the excitation system.
Patent GB-520856-A (GB)
Title: Improvements in or relating to shades for electric light bulbs
IPC: F21V11/08
Filed: 1938-11-02
Abstract: 520,856. Lampshades. WOOLDRIDGE, H. Nov. 2, 1938, No. 31679. [Class 75 (ii)] An opaque shade comprises an upper bellshaped part 1 resting on the neck of the lamp bulb 4 and a cylindrical lower part 2 enclosing the lower part of the bulb, the base of the part 2 being formed with a recess 8 from the centre of which depends a short hollow boss 9 formed with lateral apertures 10 the light from which is reflected downwards by the recess 8. The parts 12 may be made of a moulded resinous substance and may be detachably secured together by a bayonet joint, a fractional fit, or a screw-threaded connection 3 so that the lower part can be quickly attached in the event of an air raid.
Patent GB-1283041-A (GB)
Title: An improved method and apparatus for the treatment of filamentary material
Inventor: DIXON KENNETH GEORGE OSBORNE
IPC: D01F9/14
Filed: 1968-07-03
Abstract: 1283041 Treatment of filamentary material MORGANITE RESEARCH & DEVELOPMENT Ltd 3 Oct 1969 [3 July 1968] 31686/68 Heading C1A Carbonizable filamentary material subjected to pyrolysis is kept under tension by winding the material on to a thermally and mechanically expansible drum while the size of the drum is held constant, subjecting the drum and the material to pyrolysis and allowing the drum to expand thermally and/or mechanically subject to the restraint of the material wound thereon. The mechanical expansion may be restrained during but permitted after the pyrolysis treatment. The apparatus for the above process comprises a drum which is essentially a longitudinally split flexible metal cylinder both with means for releasably holding the edges of the cylinder at the split against relative circumferential movement and means for permitting or causing circumferentially guided limited circumferential separation of the edges. The means for causing circumferential separation may consist of a spring or springs engaged between the edges so as to be stressed when the edges are held against separation. The edges may be held against separation by pairs of knuckled clevis plates secured to the edges and arranged to receive a holding pin through the knuckles of each pair. The limited circumferential separation of the edges may be guided by a channel-section guide binding each end of the split, each guide being secured to one margin end of one cylinder edge to embrace the respective opposite margin end with a circumferential pin-and-slot connection thereto.
Patent GB-263146-A (GB)
Title: Improvements in or relating to movable roofs for vehicle bodies
IPC: B60J7/12
Filed: 1926-12-14
Abstract: 263,146. Dubos, J. L. Dec. 15, 1925, [Convention date]. Hoods.-In road vehicles of the kind provided with a roof opening closable by a flexible covering adapted to be withdrawn from a recess, the covering is guided by means of suitably reinforced edges in ducts provided on the permanent roof, and the flexible covering is adapted to be drawn in a flat unrolled condition into a recess which extends under the rear seats of the vehicle. As shown, the flexible covering 1 is guided by means of its edges, suitably reinforced by metal strips 3 or cables in ducts 4, and is provided with a suitably-shaped bar 2 adapted to be connected to operating chains 6 carried by sprockets 7, 8, the sprockets 8 being mounted on a transverse shaft operated by gear by means of a handle 12 or other means under mechanical or electrical control. The flexible covering 1 is adapted to be withdrawn in an unrolled condition into a recess 13 at the rear of the vehicle, or, in a modification, in a folded position into a recess at the rear of the roof. In a further modifica. tion, the flexible covering 1 may be in two parts housed in recesses at the backs of the front seat and rear seats respectively and to cover the front and rear portions of the roof.
Patent GB-188967-A (GB)
Title: Valve spring retainer for internal combustion engines
IPC: F01L3/10
Filed: 1921-11-29
Abstract: 188,967. Jerome, E.. Nov. 29, 1921. Spindles.- The collar B forming an abutment for the loading-spring of an internal - combustion engine is shaped to fit over a pair of clips C, which are placed in a recessed portion A of the valve-stem.
Patent GB-426662-A (GB)
Title: Improvements in or relating to the preparation of ceramic raw materials
IPC: B28C1/22
Filed: 1933-11-15
Abstract: 426,662. Treating clay slip. DOULTON & CO., Ltd., and LORAINS, J. P., Royal Doulton Potteries, Lambeth, London. Nov. 15, 1933, Nos. 31904/33 and 28450/34. [Class 87 (i)] Clay slip is subjected to the simultaneous action of heat and reduced pressure to remove water and occluded air and render the clay stiff and plastic. The apparatus consists of a jacketed chamber 1 preferably inclined and provided at the lower end with rotating blades 4, and at the upper end with a piston 8 carrying a scraper blade or blades 5 which can slide in a keyway on the shaft 2. The clay is fed through an opening 18 ; an opening 16 is connected to a vacuum pump, and chemicals to assist the stiffening may be fed through an opening 17. When the slip has been sufficiently treated, the shaft 2 is stopped and the plastic clay is ejected by forcing the piston along the shaft by a screw 10 operated manually or otherwise. The vacuum may be 29À5 inches of mercury, and the temperature of the steam jacket 105‹ C. According to the first Provisional Specification, the apparatus consists of a pugging chamber above a steamjacketed vacuum chamber having downwardly tapering walls and provided with conveyer blades on a continuation of the shaft in the pugging chamber.
Patent GB-1392965-A (GB)
Title: Swivel joint assembly
IPC: F16L27/08
Filed: 1972-07-07
Abstract: 1392965 Pipe couplings CARBORUNDUM CO 7 July 1972 [16 July 1971] 31919/72 Heading F2G In a swivelling pipe joint, heat resistant sealing rings 27, 35 provide bearing surfaces at the junction of refractory fibre pipe linings 19, 33. Preferably, the sealing rings are mounted in widened ends 21, 33 of a pipe 15 and a swinging discharge conduit 13 is connected therethrough to a source of corrosive molten metal such as molten aluminium. The fibre lining may be of silica, silicon carbide or boron nitride and may be braided, woven or in a matted form and fitted as a sleeve or cemented in place. The sealing rings may be of silicon carbide or tungsten carbide. Set screws 57, 59 are provided to take up wear on the sealing rings.
Patent GB-1221892-A (GB)
Title: Improvements in or relating to harvesting machines
Inventor: COENE FRANS JOZEF DE
IPC: A01D57/04
Filed: 1969-06-25
Abstract: 1,221,892. Harvesting machines. SPERRY RAND CORP. 25 June, 1969 [28 June, 1968], No. 32039/69. Heading A1F. A harvesting machine has means for vertical and longitudinal adjustment of the crop pick-up means, as shown the pick-up reel of a combine harvester, the adjustment in both directions being by a common drive means, e.g. jacks 31 operated electrically, pneumatically, or hydraulically. The reel shaft 16 is journalled at each end in a bearing 17 attached to a sleeve 18 slidably mounted on an arm 19. The other ends of arms 19 are respectively attached to tubes 21 rotatably mounted on a transverse tubular shaft 22 which itself is free to rotate in support brackets attached to frame 1. Welded to each end of shaft 22 is a triangular plate 28 which has pivotally mounted at two of its apices respectively a rod 33 pivotally attached to the sleeve 18 and the piston rod 30 of the ram 31. In the lowered position the arms 19 engage rest supports 20. In energizing the rams, rotation of the plates 28 produces longitudinal movement of the reel as the sleeves 18 slide along the arms 19 until abutments on the sleeves contact adjustable stops 27 on the arms 19 when further extension of the rams results in a predominantly vertical movement of the reel as the arms 19 rotate about the transverse tube 22. After extending the rams springs 35 attached respectively between rods 33 and arms 19 are tensioned and thereby effect the return of the reel to its rest position as the rams are de-energized. Alternatively a double acting ram may be used to obviate the necessity of the springs.
Patent GB-604572-A (GB)
Title: Improvements relating to rolling shutters
IPC: E06B9/68
Filed: 1945-11-27
Abstract: 604,572. Fire-preventing shutters. MATHER & PLATT, Ltd., and McCLENAN, F. Nov. 27, 1945, No. 32054. [Class 47 (ii)] In a spring - counter balanced rolling shutter adapted to close automatically when a link fuses in case of fire, the spring is first rendered inoperative when the link fuses so that the shutter begins to fall under its own weight, and its action is then reinstated so as to be operative during the remainder of the fall of the shutter, and subsequently if it is desired to raise the shutter. The shaft 3 is rotatable in bearings 5, 7 and is interconnected by the balancing spring 10 with the barrel 1 which rotates on the shaft on bearings 4. A ratchet wheel 8 secured to the shaft is normally locked by a catch lever 15 connected to the fusible link 20<SP>1</SP>. The wheel 8 carries a pawl 20 which is urged by a spring 21 to engage a ratchet wheel 19 secured to the barrel but normally is held away from it by a pivoted catch 22. When the link 20<SP>1</SP> melts, the lever 15 falls and the shaft 3 is rotated by a spring 27. This rotation forces the pawl 20 from the catch 22 and the pawl engages the wheel 19 so that the barrel and shaft rotate together and the shutter 2 begins to descend without hindrance from the spring 10. After a small angular rotation of the wheel 8, the pawl 20 is disengaged from the wheel 19 by means of a stop 23<SP>1</SP> and the wheel 8 is locked 'against further movement by the pawl 20 wedging between stops 23<SP>1</SP> and 25. The barrel can now rotate alone and the shutter continues to descend under its acquired momentum and against the action of the spring 10. If it is desired to raise the shutter, the spring 10 will exercise its normal counterbalancing function. If the link 201 should melt while the shutter is lowered, the wheel 8 is prevented from rotating by a pawl 31 fitted with a feeler arm 33 which holds the pawl away from the wheel, by engaging with the shutter 2 when the latter is rolled on the barrel. To reset the mechanism after an automatic release, the shutter is rolled up and the ratchet 8 forced back to its initial position shown in Fig. 2.
Patent GB-738668-A (GB)
Title: Process for the reductive discharge of dyeings and discharge pastes therefor
IPC: D06P5/15
Filed: 1952-12-18
Abstract: Cupriferous dyeings on cellulose containing fabrics are locally discharged by applying a reductive discharge paste which contains, in addition to the reducing agent such as sodium formaldehyde sulphoxylate, a cyanide soluble in water or in alkaline solutions and a water-soluble quaternary ammonium salt derived from a tertiary amine and an aralkyl halide.  Specified cyanides are sodium, potassium, zinc and sodium-zinc cyanide.  Specified quaternary ammonium salts are dimethyl-phenyl-benzylammonium chloride and especially the mono- and di-sulphonic acids, and alkaline earth metal, e.g. calcium, sulphonates thereof.  The discharge paste may also contain dyestuffs for the production of Z  coloured discharges, potassium carbonate, glycerine, anthraquinone, urea and the usual thickeners.  The process is applicable to cotton, linen and regenerated cellulose fabrics dyed with copper phthalocyanines and complex copper compounds of direct azo dyestuffs or direct dyeing complex copper compounds of azo dyestuffs, and coppering may be effected or completed on the fabric, for example, as described in Specification 619,969. Specifications 616,950 and 633,445 also are referred to.
Patent GB-209255-A (GB)
Title: Improvements relating to galvanometers
Filed: 1922-11-24
Abstract: 209,255. Etablissements E. Belin, and Belin, E. Nov. 24, 1922. Indicating, optical devices for; photographic recorders.-Light from a point source S is focussed by a condenser C and short focus lens E upon the fibre 0 of a fibre suspension galvanometer, and a vertically slotted diaphragm D is interposed to produce an image coinciding with the fibre. The width of the slot is adjustable so that the fibre normally completely intercepts the light. If the fibre is displaced a distance equal to its diameter, the light passes and may be focussed upon a photographic recording strip. Feeble telegraphic signals may thus be recorded. The diaphragm D may be formed with a transverse slot also, so that the deviation of the galvanometer may be observed and measured.
Patent GB-1470675-A (GB)
Title: 1,2,3,4-tetrahydroisoquinoline derivatives and the preparation thereof
IPC: C07D257/04
Filed: 1974-07-19
Abstract: 1470675 1,2,3,4-Tetrahydroisoquinoline derivatives FUJISAWA PHARMACEUTICAL CO Ltd 19 July 1974 [20 July 1973 (2) 30 July 1973] 32206/74 Heading C2C Novel 1,2,3,4-tetrahydroisoquinoline derivatives having the formula wherein R 1  and R 2  are hydrogen or (C 1 -C 6 ) alkyl; R 3  is phenyl substituted by (C 2 -C 6 ) alkenyloxy, mercapto, (C 1 -C 6 ) alkylthio, sulphamoyl, mono- or di-substituted sulphamoyl, or a heterocyclic group; R 4  and R 5  are hydroxy or protected hydroxy and X is oxygen or sulphur, and pharmaceutically acceptable salts thereof, are prepared by reacting a compound of the formula or a salt thereof, with an aldehyde of the formula R 3 .X.CH 2 CHO. The novel compounds possess pharmaceutical properties.
Patent GB-324949-A (GB)
Title: Improvements in or relating to television and like systems
IPC: H04N3/04
Filed: 1928-11-05
Abstract: 324,949. Baird, J. L., and Television, Ltd. Nov. 5, 1928. Television.-In a television apparatus, a plurality of light-sensitive or light-producing devices, arranged at different locations, cooperate with a single exploring means. In one modification, exploring means comprising lightsource 24, Fig. 1, and scanning-disc 28, cooperate with light-sensitive devices 12, 14, 16 located at 6, 8, 10 respectively to effect the transmission of objects 18, 20 or 22 at will, a switch 30, Fig. 2, being arranged to connect to either device as required. In a further modification, a single scanning-disc 28, Fig. 3, allows a light-source 44 to scan an object 46 located at 34 and co-operating with a lightsensitive device 40, the light passing through the side of the disc, and a source 48 to scan objects 50 located at 36 and co-operating with light-sensitive device 42 the light passing through the top of the disc. In order to avoid possible interference between the various sets of cooperating devices, mirrors may be introduced into the optical system, Fig. 4 (not shown), to effect separation of the light-beams. Specification 317,143 is referred to.
Patent GB-1223570-A (GB)
Title: Improvements in and relating to reprographic materials
IPC: G03F7/008
Filed: 1968-07-05
Abstract: 1,223,570. Organic azides. KALLE A.G. 5 July, 1968 [7 July, 1967], No. 32270/68. Heading C2C. [Also in Division G2] Organic-solvent soluble, water-insoluble azides of formula (in which Q is H or a substituent, each R is a substituent other than N 3 , two R groups optionally being linked together, X is H or halogen, m is 1 or 2, n is 0 or 1, the azido group is in the 3- or 4-position of the benzene ring relative to the unsaturated chain) are prepared by condensing an aromatic azidoaldehyde with a methylaryl ketone under alkaline or acidic conditions. Preferably Q is halogen, OH or alkoxy, and R is halogen, which may be substituted (e.g. with OH, oxirane, oxetane and/or CH 2 Cl groups), acylamino, dialkylamino, NO 2 , sulphazido, hydroxyalkyl, sulphoamido or sulphoester.