baber/WOPTO huggingface dataset:
Patent GB-1277982-A (GB)
Title: High polymeric articles
Inventor: BONVICINI ALBERTO
IPC: C08L25/00
Filed: 1970-02-24
Abstract: 1277982 Polymer compositions MONTECATINI EDISON SpA 24 Feb 1970 [26 Feb 1969] 8757/70 Heading C3P Compositions suitable for making fibres, films and strips comprise (1) 99 to 80 weight per cent of a crystalline olefin polymer or polystyrene and (2) 1 to 20 weight per cent of a copolymer of (a) a vinyl or isopropenyl aromatic hydrocarbon, (b) an α,#-unsaturated nitrile and (c) an aromatic or cycloaliphatic hydrocarbon containing a non-terminal double bond. Specified crystalline polymers are polyethylene, polypropylene, polybutylene-1, polypentene-1, polyhexene-1, poly-4-methylpentene-1, polyootene-1 and polystyrene. The copolymer may be derived from (a) styrene α-methylstyrene and vinyltoluenes, (b) acrylonitrile and methacrylonitrile, and (c) indene and mixtures thereof with coumarone, acenaphthylene, cyclohexene, cyclopentene, α- pinene and norbornene. The compositions may also contain conventional colourants, stabilizers, lubricants and dispersing agents, and may be extruded into filaments and stretched. Examples describe the copolymerization of styrene, acrylonitrile and (1 and 2) indene, (3 and 4) acenaphthylene and (5) cyclohexene in aqueous dispersion in the presence of sodium lauryl sulphate, sodium persulphate, sodium bisulphite and (3 and 4) lauryl mercaptan; and the mixing of the products with polypropylene.
Patent GB-557595-A (GB)
Title: Improvements in moulding presses
IPC: B29C45/03
Filed: 1942-06-26
Abstract: 557,595. Injection-moulding machines. BLUEMEL BROS., Ltd., and BLUEMEL, F. W. June 26, 1942, No. 8768. [Class 87 (ii)] A machine of the kind having a container 24 for the material to be moulded, a heater 23 for the material, a feed nozzle 22 and a mould 30, 35, all mounted for reciprocation by a power-operated bolster 15 towards a fixed plunger 25, is characterized in that the power for moving the bolster is controlled by an operating lever 43 which is automatically moved back and forth by means on the reciprocating parts of the machine. The bolster is raised by hydraulic rams 131 which are controlled by valves 37  which are opened in turn by a cam 39 secured to the lever 43 and oscillating therewith. The lever 43, pivoted at 42, is pulled counterclockwise by a spring 50 and clockwise by a weighted lever 55 pivoted at 54 on the lever 43 and having a hooked end 57 engaging a pin 58 on the lever 43, the arrangement being such that the lever 43 will stay in either of its extreme positions unless it is rocked a little way towards its other extreme position. Operation : In the position shown in Fig. 5, the bolster, mould, nozzle and container have been raised to their acme and an exhaust valve 37 is open (the other valve 37 being closed) ; accordingly, the bolster, mould &c. begin to descend, and a roller 64 on the bolster rocks counter-clockwise, Fig. 1, a lever 60 pivoted at a fixed point 61. The end 66 of the lever 60 engages the lever 43 and starts a swing-over movement which is completed by the weighted lever 55. At the end of the swing-over movement, the bolster, mould &c. are at their nadir, Fig. 1, the pressure valve 37 being opened and the exhaust valve 37 being closed. Accordingly, the bolster &c. begin to rise. When they have risen a little way, an abutment 59 engages the lever 55 and takes the weight off the lever 43 (the hook 57  receding from the pin 58). Later, an abutment 53 on the mould slide 17 engages the lever 43 and begins a swing-over movement which is completed by the spring 50, the position then being as shown in Fig. 5. The mould is cooled and the articles may be ejected by a blast of air from a pipe 71. A feed hopper 67 pivoted at 70<SP>1</SP> on the upper bolster 12 and at 68 on the container 24 is tilted automatically to feed position during descent of the bolster &c. Hydraulic rams 20<SP>1</SP> act upon the slides 16, 17 which carry the container, nozzle and mould segments 30.
Patent GB-833142-A (GB)
Title: Substituted organosiloxanes
IPC: C08G77/28
Filed: 1958-03-19
Abstract: A lubricant consists of a liquid organosiloxane polymer or copolymer containing at least 0.1 mol. per cent of units of the formula <FORM:0833142/III/1> wherein x is 1 or 2 and each R is an alkyl or aryl radical, and other siloxane units present being of the formula R1ySiO 4-y/2 , where y is 1, 2 or 3 and each R1 is an alkyl, aryl, haloalkyl or haloaryl radical, the siloxane having an average of from 1.9 to 3.0 total organic radicals per Si atom (see Group IV (a)), to which conventional grease forming or thickening agents are added, e.g. silica, carbon black, alkali and alkaline earth metal salts of fatty acids (e.g. lithium stearate), hydroxystearic acid and of alicyclic substituted fatty acids as described in Specification 688,186.ALSO:The invention comprises organopolysiloxanes in which at least 0.1 mol. per cent of the siloxane units present are of the formula <FORM:0833142/IV (a)/1> where x is 1 or 2 and each R is an alkyl or aryl radical, and other siloxane units present being of the formula <FORM:0833142/IV (a)/2> where y is 1, 2 or 3, and each R1 is an alkyl, aryl, haloalkyl or haloaryl radical, the siloxane having an average of from 1.9 to 3.0 total organic radicals per Si atom.  The polymers may be made by reacting the Na salt of pentachlorobenzenethiol with an organopolysiloxane containing a Si-bonded Cl.CH2-radical; the co-polymers may be similarly made, but preferably the Na salt is reacted with a simple Cl.CH2-substituted siloxane, such as the dimer, and the resulting polymer is then equilibrated in known manner with another siloxane to give the desired copolymer.  In typical examples: (1) the Na salt of pentachlorobenzenethiol was refluxed with [Cl.CH2(CH3)2Si]2O and dimethylformamide to give, on purification, the dimer [Cl5.C6.S.CHS(CH3)2Si]2O having a M.P. of 111.5 DEG  C.; and (2) the product of (1) was copolymerized with cyclic [(CH3)2SiO]4 in benzene with conc. H2SO4 to give a liquid having the average formula <FORM:0833142/IV (a)/3> The products vary from low viscosity liquids to non-flowing gums and crystalline materials.  Uses.-The liquid products are useful as lubricants per se and as bases to which conventional grease-forming or thickening agents can be added, e.g. silica, C black, alkali and alkaline earth metal salts of fatty acids (e.g. lithium stearate), hydroxstearic acid, and of alicyclic substituted fatty acids as described in Specification 688,186.  The gums can be mixed with fillers, e.g. fume silica, silica aerogel, diatomaceous earth, titania and ferric oxide, and cured or vulcanized in known manner to form silicone rubbers having solvent-swelling characteristics.  The crystalline products are used as reactants in equilibration processes to form other silicones.
Patent GB-1205353-A (GB)
Title: Improvements in or relating to catalytic hydrocracking and desulfurization processes
IPC: C07C7/17
Filed: 1969-02-18
Abstract: 1,205,353. Hydrocracking; purifying oils. FOSTER GRANT CO. Inc. 18 Feb., 1969 [20 Feb., 1968], No. 8834/69. Heading C5E. A process for the hydrocracking and hydro. desulfurization of a feed stock of vinyl aromatic distillation residue and aromatic alkylation residue comprises the steps of passing a mixture of the feed stock and hydrogen through a bed of hydrocracking and hydrodesulfurization catalyst: (a) the amount of hydrogen being sufficient to convert the free and chemically combined sulfur to hydrogen sulfide and to saturate the hydrocarbon components; (b) passing the feed stock through the catalyst bed at a rate of from 0.2 to 3.0 pounds per pound of catalyst per hour; (c) maintaining the temperature of the catalyst bed within the range of from 600 F. to 1100 F.; and (d) maintaining-the pressure of the feed stock and hydrogen within the range of from 100 to 500 P.S.I.G. The catalyst may be a combination of cobalt, nickel and molybdenum oxides on alumina. The feedstock may comprise the distillation residue from the production of styrene, divinylbenzene or vinyl toluene.
Patent GB-808854-A (GB)
Title: Pulping and refining
IPC: D21B1/34
Filed: 1956-03-21
Abstract: 808,854. Presses for separating liquids from solids. WILLIAMS, W. P. (Bauer Bros., Co.). March 21, 1956, No. 8872/56. Class 46. [Also in Group VIII] In pulping fibrous material such as wood chips, the material is digested in steam and liquor containing chemicals in a digester and, immediately thereafter, subjected to successive squeezings in a screw-press to remove, for example, 70 per cent. of the liquor. The screwpress comprises a cage 27, Fig. 3, having bars 28, between which liquor can escape, and a sleeve 38, Fig. 2, rotatably mounted on a driven shaft 43, to which is secured a second sleeve 39. The sleeve 38 is separately driven, as by a pulley 45, preferably faster than the sleeve 39. The sleeves have helical threads 41 and 42. The sleeve 39 is formed with frusto-conical parts 46. Projections 52 and 51 extend into the cage to form, between it and the sleeve 39, chambers 48 of relatively large clearance separated by constricted passages. Material enters the screwpress through an inlet 31 and leaves through an outlet 32 controlled by a sleeve 33.
Patent GB-1401375-A (GB)
Title: Gas cooled dynamoelectric machine
IPC: H02K9/08
Filed: 1973-02-23
Abstract: 1401375 Dynamo-electric machines GENERAL ELECTRIC CO 23 Feb 1973 [2 March 1972] 8945/73 Heading H2A In a gas cooled dynamo-electric machine comprising a rotor 17 disposed within the bore of a stationary electro-magnetic core 21 positioned between a pair of end frames 15, the rotor and core having an air gap 23 therebetween and the core permitting therein a radially inward and outward flow of gas coolant, e.g. hydrogen, and a plurality of spaced section plates 25 circumferentially mounted along the length of the core, the plates support a circumscribing gas-tight outer wrapper 29 and, with the core and wrapper define a plurality of alternating hot and cold annular gas chambers 41 which are interconnected with respective hot and cold gas plenums in the end frames by a plurality of hot and cold gas pipes 51 which are directed axially along the core and mounted externally of the core and wrapper. The pipes may be removed for shipment, thus allowing, when the wrapper is of the maximum diameter for rail clearances, the core and rotor to larger than were the pipes within the wrapper. A fan 35 turned by the rotor may be axial, as shown, or radial; and heat exchangers 37 may be vertical, as shown, or horizontal.
Patent GB-1197681-A (GB)
Title: Improvements in the Wads of Shot-Gun Cartridge-Cases.
Inventor: GREGORIO VITO DE
IPC: F42B7/08
Filed: 1968-02-23
Abstract: 1,197,681. Shotgun cartridge wads. V. DE GREGORIO. 23 Feb., 1968 [27 Feb., 1967], No. 8958/68. Heading F3A. A wad, e.g., of plastics material, for a shotgun cartridge, comprises a cylindrical member 10 accommodating a chalice-shaped member 1 whose rim is engaged in a recess 5 formed in a closed end of the cylindrical member. The cylindrical member may be prolonged with wings 6 that are already cut or defined by tearing lines. The base 2 of the member 1 is slidable within the member 10 and is slightly convex. In use the wad rests on a powder container 11 in the cartridge case and supports shots 3. On firing the cartridge the wall 4 of the member 1 expands owing to the reaction of the shot and effects a recoil force absorption in a mechanical and pneumatic way.
Patent GB-526684-A (GB)
Title: Improvements in and relating to dyestuffs for sensitising photographic emulsions
IPC: C09B23/10
Filed: 1939-03-21
Abstract: 526,684. Sensitized photographic emulsions. KENDALL, J. D. March 21, 1939, No. 8987. [Class 98 (ii)] [Also in Group IV] Tricarbocyanine sensitizing dyes for silver balide emulsions are made by condensing, in the presence of a solvent and an acid binding agent, a quaternary salt of a thiazole or selenazole containing a reactive methyl group in the α-position to the heterocyclic nitrogen atom with a compound obtainable by acetalizing γ-pyrone with an alkyl orthoformate, e.g., methyl, ethyl or propyl orthoformate. The latter compounds are believed to be diformylacetone-hexa-alkylacetals of the formula (R 1 O) 2 .CH.CH. 2 C (OR 1 ). 2 CH 2 .CH (OR 1 ) 2  where R 1  is alkyl, and the dyes obtained have the general formula where R is alkyl or aralkyl, X is the residue of a thiazole or selenazole ring, and Y is an acid radicle. Polycyclic thiazoles and selenazoles are preferably employed, e.g., benz-, naphtha- and anthrathiazoles and -selenazoles. Pyridine may be used both as solvent and acid binding agent, but it is preferable to employ a solvent, such as ethyl alcohol, with an acid binding agent, such as sodium acetate. In examples, the methyl and ethyl p-toluene sulphonates of 1-methylbenzthiazole, and the ethyl p-toluene sulphonate of 1-methyl-5 : 6- benzbenzthiazole are condensed with diformylacetone-hexa-ethylacetal.
Patent GB-951121-A (GB)
Title: Copper base alloys
IPC: C22C9/00
Filed: 1961-03-13
Abstract: Age-hardenable alloys contain in percentage by weight: .Ti.0.3 -4 .Sn.0.5 -5 .Cr.0.05-2 .Ag.0   -1 .P.0   -0.05 .Cu.not less than 90 Solution treatment is carried out at 825-890  DEG C., terminated by quenching and followed by age hardening at a temperature between 400 and 475  DEG C. for 2-4 hours.  When however high electrical conductivity is a prime requirement, ageing time is extended to 6-8 hours, at a temperature of approximately 450  DEG C. Use of the alloy for electrodes and electrode holders for resistance welding, electric contacts, and springs, is referred to.  The alloys may be prepared by melting the constituents together under an inert atmosphere; chromium may be added as a copper-chromium master alloy.
Patent GB-472822-A (GB)
Title: Improvements in and relating to heat exchangers or condensers for oil refining apparatus
IPC: F28D7/00
Filed: 1936-03-27
Abstract: <PICT:0472822/III/1> <PICT:0472822/III/2> An oil fractionating tower is provided with a condenser comprising removable groups 60 of cooling tubes depending from the cover of the tower into a vapour passage formed above a hollow heat-insulated partition 18 and consisting of an inlet duct divided by a hollow partition 28, Fig. 3, into sections 26, 27, and an outlet duct 30 separated from the inlet duct by a hollow heat-insulated partition 37 and connected to a vacuum pump through ports 31.  In order to maintain a substantially constant vapour velocity, the number of tubes in the groups is increased progressively in the direction of flow of the vapour through the sections 26, 27, and the cross-section of the duct 30 is reduced step-by-step to the outlet ports 31.  The vapour passes through the bubble caps 17 into the upper part of the tower and thence through the sections 26, 27 <PICT:0472822/III/3> <PICT:0472822/III/4> and the duct 30 to the ports 31, the condensate being collected in the troughs 75 and run off through outlets 78. The tubes in the sections 26, 27 may be cooled by crude oil, while those in the duct 30 are preferably water-cooled.  In a modification, the sections 26, 27 are disposed on opposite sides of a central outlet duct 30, Fig. 7, while in a further arrangement, the vapour flows in series through superposed ducts 130, 131, Fig. 8, provided with horizontal groups of cooling tubes.
Patent GB-677727-A (GB)
Title: Improvements in or relating to building construction
IPC: A01K1/00
Filed: 1949-04-05
Abstract: 677,727. Bungalows, garages, sheds, &c. WYNMALEN, H., and POWELL, J. W. April 4, 1950 [April 5, 1949], No. 9236/49. Class 20(i) A small bungalow, garage, shed or the like is entirely built up of channelled panels each having a single flange along one longitudinal edge and a double flange along the opposite edge, the single flange of one panel abutting and interfitting with the double flange of the adjacent panel and being secured thereto by fastenings passing through the overlapping flanges,. their meeting faces being masked by the double flanges. As shown, wall panels 1, Figs. 2 and 6, which may be sheet metal or of cementitious composition, have a single flange 2 and a double flange 3, 4, the flange portion 4 covering the flange junction. when the panels are assembled and secured together, e.g. by bolts. The roof panels 6, Figs. 1 and 8, are constructed and assembled similarly to the wall panels but have a double flange 8, 9 of V or U formation which engages a flange 7 of an adjacent panel. Edges 10 of the roof panels may be indented (Fig. 8). Adjacent walls may be connected by angle or channel bars and reinforcing elements 12 and kneebraces 13, Fig. 4, may be provided. Small gaps due to slight variations in the widths of panels may be filled by additional members 14, 15. Metal, wood or fibre board sheeting secured to the flanges 4 may form a lining for the building.
Patent GB-699368-A (GB)
Title: Liquid fuel injection nozzles
Inventor: CLARKE JOHN STANLEY
IPC: F23D11/38
Filed: 1951-04-21
Abstract: 699,368. Liquid-fuel burners. LUCAS (INDUSTRIES), Ltd., J. April 3, 1952 [April 21, 1951], No. 9339/51. Class 75(i) A liquid-fuel injection nozzle of the swirl type has combined with its outer end a means for directing a radial air flow. inwardly across the discharge orifice, and an additional means for producing a swirling air flow externally of the first mentioned means, the two means being separated by an annular spacer. Liquid fuel is supplied through passages d at the end of the body a, and passages c in a disc b, to openings f in a disc e, from which the, fuel is directed through tangential passages (not shown) leading into the swirl chamber formed by a central aperture in the disc e and a conical aperture h in a further disc g. During operation of the injector air passes through holes u in a sleeve t threaded on and spaced from the body a, and passes through the annular space s between the sleeve t and an inner sleeve k in contact with the body b. Thence the air is directed through radial grooves n formed on an end flange m of the sleeve k into the fuel discharging from the swirl chamber h. The air also passes through notches q in the edge of an annular disc o and thence through swirl grooves p on the outer face thereof. A narrow flange r around the inner periphery of disc o divides the two air streams.
Patent GB-807426-A (GB)
Title: Improvements in or relating to electrical waveform generators
Inventor: MATTHEWS ROBERT
IPC: H03K3/12
Filed: 1956-03-26
Abstract: 807,426. Bi-stable state circuits. DECCA RECORD CO. Ltd. March 18, 1957 [March 26, 1956], No. 9376/56. Class 40 (6). A square-waveform generator comprises a pair of reciprocally coupled discharge tubes the anode of each being connected to the control grid of the other so that an increase in current through either of the tubes decreases the voltage of the other the two tubes having a common load impedance of such a magnitude as to prevent either tube saturating when in its conducting state. The Figure shows a bi-stable circuit comprising reciprocally coupled tubes 10, 11 the anode of, for example, tube 10, being connected to the control grid of tube 11 via cathode-follower stage 17, the cathode of which is also connected via differentiating circuit 35, 20 and tube 32 to the control grid of tube 10. The circuit is triggered by positive pulses applied either to capacitor 36 or 42 and square waves are taken from either or both of the low-impedance outputs of cathode-follower tubes 16, 17. If initially tube 10 is conducting and tube 11 cut-off since the anode of tube 10 is at low voltage the grid of tube 11 is held at a low voltage via the non-conductive cathode-follower tube 17. On the other hand since tube 11 is cut-off its anode is at a high voltage and thus the grid of tube 10 is held at high voltage via the conducting cathode-follower tube 16. The cathode resistors 12, 13 of tubes 10, 11 are of a magnitude such that the conductive tube does not saturate. A positive triggering pulse applied to capacitor 36 is differentiated by network 36, 39 the positive peak producing a negative potential at the anode of tube 37 which cuts-off tube 10 and the circuit changes to the stable state in which tube 10 is cut-off and tube 11 conducts. When the circuit is switched from the state in which tube 10 is conducting the positive step wave at the cathode of tube 17 is differentiated by network 35, 20 to produce a positive pulse at the grid of tube 32 which conducts heavily, this rapidly discharges the capacity in the coupling between the cathode of tube 16 and grid of tube 10 and ensures a rapid change-over. In a modification in which a single trigger input is applied tubes 37, 41 and their associated circuits are dispensed with and the positive input pulse is applied through capacitor 50 and rectifier 51 to the cathode of the two tubes 10, 11, whichever tube is conducted being cut-off by the trigger input pulse.
Patent GB-492811-A (GB)
Title: A process for the production of compositions comprising rubber and artificial resins
IPC: C08L17/00
Filed: 1937-04-02
Abstract: Reclaim rubber, vulcanized rubber, or depolymerized rubber is heated with a hardenable phenol-aldehyde resin which is soluble in hydrocarbons and drying oils, and which may be in the liquid or solid stage.  The mixture may be made by kneading or by mixing the ground components or by mixing solutions of the components, and removing the solvent.  The heating is preferably effected in two stages, one at low temperatures followed by kneading and a further heating at higher temperatures.  The product, which may be admixed with fillers, several being specified, vulcanizing agents, accelerators, &c., may be moulded or dissolved and used as a varnish or coating or impregnating medium.  Resins specifically referred to include the reaction product obtained by reacting p-isopropyl phenol or p-cumyl phenol or a polynuclear phenol produced by interacting o-cresol with butyraldehyde or a mixture of an alkyl phenol and an interaction product of phenol and dipentene hydrochlorides, with formaldehyde, or the resins described in Specifications 334,572, [Class 2 (iii)], 417,122, 459,549, 467,899, 479,350, and U.S.A.  Specifications 2,058,797 and 2,101,944.  Samples have been furnished under Sect. 2 (5) of a heated mixture or reclaimed rubber and the condensation product of 1,3,5-methyl-isopropyl phenol and formaldehyde.ALSO:Reclaim rubber, vulcanized rubber or depolymerized rubber is heated with a hardenable phenol-aldehyde resin which is soluble in hydrocarbons and in drying oils, and which may be in the liquid or solid stage.  The mixture may be made by kneading or by mixing the ground components or by mixing solutions of the components, and removing the solvent.  The heating is preferably effected in two stages, one at low temperatures followed by kneading and a further heating under pressure at higher temperatures.  The product, which may be admixed with fillers, several being specified, vulcanizing agents, accelerators, &c. may be moulded or dissolved and used as a varnish or coating or impregnating medium. Resins specifically referred to include the reaction product obtained by reacting p-isopropyl phenol or p-cumyl phenol or a polynuclear phenol produced by interacting o-cresol with butyraldehyde, or a mixture of an alkyl phenol and an interaction product of phenol and dipentene hydrochlorides, with formaldehyde, or the resins described in British Specifications 334,572, [Class 2 (iii)], 417,122, 459,549, 467,899, 479,350, [all in Group IV], and U.S.A. Specifications 2,058,797 and 2,101,944.  Samples have been furnished under Sect. 2 (5) of a heated mixture of reclaimed rubber and the condensation product of 1.3.5.methylisopropyl-phenol and formaldehydde.