baber/WOPTO huggingface dataset:
Patent GB-1244005-A (GB)
Title: Graft copolymers and process for their manufacture
IPC: C08G2/38
Filed: 1968-11-04
Abstract: 1,244,005. Graft polymers. FARBWERKE HOECHST A.G. 4 Nov., 1968 [2 Nov., 1967], No. 52207/68. Headings C3G and C3P. A graft polymer consists of (a) an oxymethylene copolymer, which is alkali stable or can be stabilized with alkali, of trioxane or formaldehyde with 0À1 to 50% by weight of a comonomer free from saponifiable groups, and (b) polyvinyl alcohol or a copolymer of vinyl alcohol with an olefin, which copolymer is obtained by saponification of a copolymer of vinyl acetate with 0À1 to 50% by weight of an olefin. The graft polymer is produced by saponification in the presence of a strong alkali in a mixture of a watersoluble organic solvent and water at a temperature in the range 40‹ to 200‹ C., and a pressure in the range of atmospheric pressure to 50 atmospheres of a graft polymer of copolymer (a) and polymer (b). The graft polymer which is saponified is prepared by (i) grafting vinyl acetate or vinyl acetate and an olefin on to copolymer (a) using a free radical initiator, (ii) grafting trioxane or formaldehyde and a comonomer on to polyvinyl acetate or. a vinyl acetate-olefin copolymer using a cationic initiator or (iii) kneading copolymer (a) with polyvinyl acetate or a vinyl acetate-olefin copolymer in the presence of a free radical initiator. In Examples 1 and 2, vinyl acetate is grafted on to a trioxanedioxolane copolymer, the graft copolymer being saponified in aqueous methanol containing NaOH or aqueous dioxane containing KOH. The graft polymer produced in Example 3 by grafting vinyl acetate on to a trioxane ethylene oxide copolymer is saponified in aqueous methanol containing sodium acetate. In Examples 4 and 6, trioxane and 1,3,6-trioxacyclooctane are grafted on to polyvinyl acetate or a vinyl acetate ethylene copolymer using pnitrophenyl-diazonium fluoborate as initiator, the resulting graft polymer being saponified in aqueous methanol containing borax. A copolymer of trioxane and ethylene oxide is kneaded in Example 5 at 200‹ C. with polyvinyl acetate in the presence of dicumyl peroxide to produce a graft polymer which is saponified in aqueous dimethyl formamide containing NaOH.
Patent GB-1383785-A (GB)
Title: Variable speed sidewalk
IPC: B66B21/12
Filed: 1972-11-14
Abstract: 1383785 Passenger conveyers JOHNS HOPKINS UNIVERSITY 14 Nov 1972 62605/72 Heading B8A The operative load-carrying surface of a passenger conveyer is formed by comb-like extensions 45, 46, each carried by a series of respective members 12. Each of the latter carries upper pairs of rollers 22 for engaging tracks 66 formed longitudinally along the conveyer framework, and lower pairs of rollers 24 engaging similar tracks 67. The upper tracks are downwardly sloped along an acceleration zone of the conveyer (21) (Fig. 2, not shown), are parallel in a normal travel zone (16), and slope upwardly along a deceleration zone (22). As the tracks slope downwardly, the members 12 are pivoted progressively from a near-vertical position (Fig. 10), to their normal running speed position (Fig. 9). The members 12 are connected to an endless chain 28 which passes around a driving sprocket 30 prior to passing into the acceleration zone and around a return sprocket (32) (Fig. 16, not shown) at the downstream end of the conveyer. The chain 28 is drawn in taught configuration along the return run of the conveyer by the driving sprocket 30, but along the upper working run of the conveyer, the chain 28 hangs in loops between successive members 12. The members are driven along the working run by the action of two parallel longitudinallyextending variable-pitch drive screws 26, 26 Each member 12 carries a pair of follower members 60, 60, which respectively engage the worms 26, 26. The speed of the drive sprocket 30 may be adjusted by a vernier adjustment wheel 115.
Patent GB-1415643-A (GB)
Title: Method of and apparatus for measuring the quantity of vapour present in a liquid stream
IPC: G01N23/12
Filed: 1971-11-12
Abstract: 1415643 Analyzing materials using x-rays LUCAS INDUSTRIES Ltd 10 Oct 1972 [12 Nov 1971] 52632/71 Headiog G1A In an apparatus for measuring the amount of vapour present in a liquid stream flowing through a chamber 14, two opposed walls of the chamber are transparent to x-rays produced from an element 21 of plutonium 238, which pass through the liquid stream to be incident on a detector 22. The source is collimated and the output from a scintillation head 22 is displayed on a counter 23. The apparatus may be calibrated using liquids of known vapour content in a closed measuring chamber.
Patent GB-1156989-A (GB)
Title: Improvements in and relating to Flame Failure Systems in Burner Installations
IPC: F23N5/24
Filed: 1966-11-25
Abstract: 1,156,989. Controlling burners. HONEYWELL Inc. 25 Nov., 1966 [27 Dec., 1965], No. 52842/66. Heading F4T. [Also in Division G1] A burner flame sensor comprises a detector energized alternately through two paths, subjected to a simulated flame while energized through one path and, while energized through the other path, incorporated in a self-operating system which performs so as to repeatedly isolate the detector from and expose it to the sensed condition, current sensing means being provided in the two paths to indicate presence or absence of flame and faulty operation of the sensor. An ultra-violet sensitive Geiger tube 10 is connected in a bridge rectifier circuit 12 so as to be energized in alternate half cycles of the supply through relays A and B respectively. A flame simulating lamp 15 is energized through a diode 14 during the half cycles when the Geiger tube is energized through relay A. In the other half cycles, the Geiger tube receives only flame radiation via a shutter 16. During normal operation, in the first half cycles, current in tube 10 due to radiation from source 15 pulls in relay A, which is held up during the second half cycle by the capacitor across it. During the second half cycle, flame radiation causes relay B to pull in. B1 opens to cut off radiation by means of shutter 16 and B drops out. Thus B cycles during the second half cycle, causing B2 to transfer energy to pull in relay C. C is held up during the first half cycle by the capacitor across it, and C1 keeps the burner energized. If the flame fails, B is continually de-energized and no energy is transferred to C which drops out to shut down the burner. If the Geiger tube goes short circuit, B is continually energized in the second half cycle and B2 cannot transfer energy to relay C. B3 connects relay D to the power supply so that D1 is closed to energize C and keep the burner operating. D2 initiates an indication of malfunctioning. If the Geiger tube goes open circuit, relay A drops out, but C remains up over A1 to keep the burner operating, and A2 gives the malfunctioning indication. This is also true if, on starting up, the source 15 is not lit.
Patent GB-1160688-A (GB)
Title: Improvements in and relating to Chrome Tanning
Inventor: GRALL FRANCOIS BERNARD
IPC: C14C3/06
Filed: 1966-11-28
Abstract: 1, 160, 688. Pickling and tanning skins. UGINE KUHLMANN. Nov. 28, 1966 [Dec. 3, 1965], No. 53105/66. Heading C6C. In a process for chrome-tanning skins without basification, the skins, e.g. cleaned, softened, lime-depilated, fleshed and de-limed skins, are pickled in an aqueous liquor comprising sodium chloride, an acid or an acidic salt and a synthetic tanning agent, the pickling liquor is then drained off, and the pickled skins are tanned with a chromium salt, e.g. chromic cloride, chromic sulphate or a chromium alum, having a basicity of at least 45 degrees Schorlemmer, e. g. 55 degrees or 65 degrees Schorlemmer, water being added at the start of or during the tanning operation. The synthetic tanning agent may be an organometal compound, e. g. the reaction product of a water-soluble chromium salt with the condensation product of formaldehyde and #-naphthol sulphonic acid, or with the condensation product of formaldehyde and an alkali metal bisulphite and a diphenol having the formula: wherein X represents either SO 2  or the group: wherein Y and Z each represent H of CH 3 , as described in French Specification 1, 364, 655. A suitable organo-metal compound is obtained by treating chromium sulphate with the product resulting from the condensation of: formaldehyde, sodium bi-sulphite and 4, 4'-dihyroxydiphenyl propane, as exemplified in said French Specification. Alternatively, the synthetic tanning agent may be an auxiliary synthetic tanning agent, such as the ammonium salt of dinaphthylmethane di-sulphonic acid, or of a product made by condensing formaldehyde with phenol sulphonic acid or naphthalene sulphonic acid. Some of the chromium salt having a basicity of at least 45 degrees Schorlemmer may be introduced during pickling. Suitable acids and acidic salts for use in pickling are: sulphuric acid, hydrochloric acid, sodium bisulphate, ammonium bisulphate.
Patent GB-1516800-A (GB)
Title: Seat supporting assembly
IPC: B60N2/14
Filed: 1976-12-20
Abstract: 1516800 Vehicle seats MILSCO MFG CO 20 Dec 1976 [12 Jan 1976] 53109/76 Heading A4J A seat assembly for a vehicle, comprises a stationary vertical shaft 6 secured by base-plate 10 to the vehicle, a rotatable seat supporting frame 4 carried on the shaft, and a seat supporting carriage 2 for seat 8 slidably supported on the frame 4, there being a stationary latch member 51 with notches 62 and a swingable latch member 54 carrying a shaft 59 which engages in a notch 62 to prevent relative rotation between shaft 6 and frame 4, the member 54 being releasable when carriage 2 is moved rearwards and pin 66 moves the member 54 rearwards to release the shaft 59. Rearward movement of carriage 2 is normally prevented by a lever 42 and a spring 64 maintains shaft 59 in engagement with latch member 51.
Patent GB-1500917-A (GB)
Title: Plate heat exchangers
IPC: F28F3/08
Filed: 1975-12-03
Abstract: 1500917 Plate heat exchangers APV CO Ltd 3 Dec 1975 [9 Dec 1974] 53161/74 Heading F4S A stacked plate heat exchanger intended for the heating or cooling of highly corrosive or potentially dangerous, e.g. radio-active, liquids comprises peripheral gaskets defining the peripheries of flow spaces between adjacent plates and a barrier 8 of resin or synthetic rubber material is cast around at least alternate spaces outside the gaskets. The whole assembled pack may be covered by a single stretchable coating of silicone rubber. The dead spaces formed between ports in the plates and the flow spaces from which they are sealed are vented by drainage tubes (not shown) passing through the sealing barrier. The sealed plate pack may be enclosed within an outer casing and means may be provided for monitoring the casing for any leaked material.
Patent GB-1116023-A (GB)
Title: Servo control apparatus
IPC: H02P7/34
Filed: 1966-11-30
Abstract: 1,116,023. Control of several D.C. motors. CLARK EQUIPMENT CO. 30 Nov., 1966 [17 Dec., 1965], No. 53534/66. Heading H2J. [Also in Division G3] D.C. servomotors 10, 12 are adapted to be selectively and sequentially supplied from a single generator 15, contactors 22, 24 being interlocked to prevent simultaneous closure. The motors have fixed field excitation, the generator being driven at constant speed and having a separately-excited field winding 70 energized from amplifier 80 associated with separate control circuits 90, 100, which are alternately effective. The circuit 90 comprises velocity generator 108 and displacement signal generator 125 which are both coupled to the motor 12 and whose outputs are summed. The generator 125 provides a command signal, when displaced to either side of a null position, to control the direction and speed of motor 12, the velocity of operation being stabilized by generator 108. The circuit 90 also comprises a manual jog control network providing fixed signals of predetermined polarity to be summed with the output of generator 108. Selector contacts 122, 150, enable either the manual or automatic control signals to be connected to pre-amplifier 160. The control circuit 100 includes potentiometer 188 from which a " coarse " command signal is derived, a " fine " control signal being obtained from a parallel summing network having a displacement sensor 198 adapted to move the motor 10 to a null position. A second input branch circuit leading to pre-amplifier 230 provides manual jog control signals alternatively from fixed voltage sources 214, 216, of opposite polarity. The pre-amplifier 230 is stabilized by feedback resistor 235, and by tachometer generator 240 which is driven by motor 10.
Patent GB-1526200-A (GB)
Title: Cationic azo dyestuffs derived from triazoles and tetrahydroquinolines
IPC: C09B44/18
Filed: 1974-12-11
Abstract: 1526200 Cationic azo dyestuffs derived from triazoles and tetrahydroquinolines IMPERIAL CHEMICAL INDUSTRIES Ltd 18 Nov 1975 [11 Dec 1974] 53548/74 Heading C4P Novel dyestuffs devoid of carboxylic and sulphonic acid groups have the formula wherein A is the radical of a quaternized triazole; R<SP>3</SP> is a non-ionogenic substituent; n is 0, 1, 2 or 3; R<SP>4</SP> is branched alkyl, alkenyl, optionally substituted aralkyl, alkyl-carbonyloxyalkyl, hydroxyalkyl of at least 3 C, alkoxyalkyl of at least 5 C, alkoxy (hydroxy) alkyl, alkylcarbonylalkyl, alkoxycarbonylalkyl or aralkoxycarbonylalkyl; and X is an anion. They are prepared by quaternization of dyestuffs of the above formula but lacking the charge and the anion in which A is the radical of a triazole having at least one unsubstituted nitrogen atom, which in turn are prepared by conventional diazotization and coupling procedures. The novel dyestuffs have use in the colouration of polymers and copolymers of acrylonitrile and dicyanoethylene and acid modified polyesters and polyamides. Specification 1,423,845 is referred to.
Patent GB-1135389-A (GB)
Title: Arc generator
IPC: H05B7/00
Filed: 1965-12-20
Abstract: 1,135,389. Arc generators. IONARC SMELTERS Ltd. (N.P.L.). 20 Dec., 1965 [21 Dec., 1964], No. 53994/65. Heading H5H. A high intensity arc generator 110 for the high temperature processing of non-gaseous chemical reactants comprises a main chamber 111 and an inlet 138 for introducing reactant gas to the chamber along with non-gaseous reactant, (which may be particulate material in a carrier gas), fed via an inlet 141, see also Fig. 2 (not shown), through the inlet tube 125, defining a reactant flow path through the chamber, and between the two electrodes 112, 113, between which, in operation, a high intensity arc (including a " tail flame ") is formed. " Inert " gas such as argon is introduced tangentially via an inlet 142 so that it swirls around to the electrode tips 131. Each electrode 112, 113, includes coolant passages 128, 129. An ion source and preheater preionize the reactant gas entering through inlet 138, and a particle accelerator 139 accelerates the ions and electrons so formed, and a magnetic lens 140 focuses the beam which passes through the arc, and through a cooled casing 144 and a focusing lens 149, to a secondary chamber 145 in which chemical recombination reactions occur. Eventually the heated gaseous and particle streams expand into a cooling chamber (not shown) via a cooled casing 147 and a defocusing lens 153. High frequency A.C. can be supplied to the electrodes 112, 113. The generator is used for ionizing chemicals for their subsequent controlled recombination, e.g. for the high temperature reduction of ores, metals, scrap metals and chemicals.
Patent GB-1285988-A (GB)
Title: Cationic polyvinylaromatic resins with improved colour and their use in electroconductive cellulose products
Inventor: SONNABEND LAWRENCE FAYE
IPC: C09K3/16
Filed: 1969-11-04
Abstract: 1285988 Treating polyvinylaromatic resins DOW CHEMICAL CO 4 Nov 1969 [4 Nov 1968] 54065/69 Heading C3P An electroconductive resin is prepared by hydrogenating an essentially linear polyvinylaromatic resin to reduce the residual ethylenic unsaturation to less than 0À3 wt. per cent calculated on vinyl groups, and then chloromethylating and aminating the polyvinylaromatic resin to give a water-soluble product. In the examples a linear polystyrene, prepared by peroxide catalysed polymerization of styrene, is hydrogenated utilizing (a) a palladium on charcoal catalyst in cyclohexane; (b) a Raney nickel catalyst in 1,2-dichloroethane and (c) a palladium or charcoal catalyst in 1,2-dichloroethane and subsequently chloromethylated and aminated utilizing a solution of chloromethyl methyl ether and zinc oxide in 1,2-dichloroethane and a solution of trimethylamine in 1,2-dichloroethane. The electroconductive resin may be used in the production of electrographic printing paper.
Patent GB-1454370-A (GB)
Title: Internal combustion engine
IPC: B01J35/04
Filed: 1972-11-23
Abstract: 1454370 Catalytic converter for exhaust gas; nitric oxide removal catalysts BRITISH LEYLAND MOTOR CORP Ltd and B TIGHE 14 Nov 1973 [23 Nov 1972] 54133/72 Headings B1E and B1F [Also in Division C1] The exhaust system of an internal combustion engine is provided with a catalyst for the decomposition (and reduction) of nitric oxide which comprises a carrier and a highly conjugated polymer having sites with a high concentration of free electrons. Polymers specified are polylbenzimidazoles, polypyromellitimides, polyphenylenes, polyacenequinones, polyimines, polydiphenyldiacetylenes, polymeric metal phthalocyanine complexes, polyindoloimidazoles and pyrolysed polyacrylonitrile. Catalysts exemplified are made by coating granules of alumina or silica or a ceramic honeycomb with polyacrylonitrile and pyrolysing the polymer.
Patent GB-1140929-A (GB)
Title: Process for the preparation of 1,1,1-trifluoro-2-chloro-2,2-dibromoethane
Inventor: GARTNER SIEGMUND
IPC: C07C17/358
Filed: 1967-12-01
Abstract: 1,140,929. Preparation of 1,1,1-trifluoro-2- chloro-2,2-dibromoethane. FLUORWERKE DOHNA VEB. 1 Dec., 1967, No. 54716/67. Heading C2C. 1,1,1 - Trifluoro - 2 chloro - 2,2 - dibromoethane is prepared by continuously dosing a suspension of anhydrous AlCl 3  in 1,1,2-trifluoro - 2 - chloro - 1,2 - dibromoethane at ambient temperature into a pre-heated reaction vessel. The amount of anhydrous AlCl 3  is preferably 2-5% by weight of the weight of 1,1,2 - trifluoro - 2 - chloro - 1,2 - dibromoethane, and the reaction may be carried out continuously in a heated worm conveyer.
Patent GB-1226300-A (GB)
Title: A warning device for indicating a pressure differential, for example, for hydraulic braking systems
IPC: B60T17/22
Filed: 1969-11-10
Abstract: 1,226,300. Signal devices for brake systems. FORD MOTOR CO. Ltd. 10 Nov., 1969 [19 Dec., 1968], No. 54851/69. Heading F2E. A warning device for indicating a pressure differential between first and second hydraulic systems, includes a housing 42 provided with a central bore which has small and large diameter portions 44, 46 in communication with the first and second hydraulic systems respectively, a shuttle piston 54 having a large diameter portion 56 slidable in the bore 44, an annular piston 60 slidably engaging the bore portion 46 and the small diameter piston portion 58 so that the piston assumes a central position when equal pressures are present in the hydraulic systems, and signal means constructed to detect axial displacement of the shuttle piston from the central position to actuate a signal device. As shown, the piston 60 normally engages shoulders 74, 76 respectively of the bore 46 and piston 54, the latter having a groove 68 in which is seated the plunger 66 of an electrical switch 38 connected to a warning lamp 40. Axial movement of the piston 54 to the left or right due to failure of one of the hydraulic systems causes the plunger 66 to move upwardly to close the contacts in the switch 38 thereby to illuminate the lamp. After failure of the system connected to the front brakes 34, 36 and the repair thereof, a greater effective force is applied to the righthand end of the piston 54 to move the piston and the piston 60 to a position wherein the plunger is seated in the groove 68 and the piston 60 abuts the shoulder 74.
Patent GB-555569-A (GB)
IPC: C08F16/36
Abstract: 555,569. Polymeric materials. AMERICAN CYANAMID CO. April 28, 1941, No. 5511. Convention date, April 26, 1940. [Classes 2 (ii), 2 (iii) and 15 (ii)] Vinyl compounds of the general formula : CH 2  =CR.R 1 , where R is hydrogen or methyl and R 1  may be -CN, -COOR 2 ,-OCOR 2  or -COR 2  where R 2  is hydrogen, alkyl, alkaryl, cycloalkyl or -N.R 3  R 4 , R 3  and R 4  being hydrogen or organic radicals-are polymerized in an aqueous solution containing at least 65 per cent. of zinc chloride, bromide or iodide, or mixtures thereof, preferably in the presence of a catalyst. The polymer may be precipitated with water and worked up into moulding masses, or the solution of the polymer may be extruded into water to form filaments. The monomers may be copolymerized with other polymerizable substances, e.g. with substances containing amide groups (acylamide) to form groups having an affinity for acid dyes or with substances containing acid groups (acrylic acid) to yield a copolymer having an affinity for basic dyes. In examples acrylonitrile, methacrolein, methyl acrylate, vinyl acetate, methyl methacrylate and a mixture of methacrolein and acrylonitrile are polymerized in zinc chloride solution using benzoyl peroxide or butyl peroxide as catalyst, the polymer being precipitated or spun into filaments. Spinning is effected by extrusion into warm water (70-80C.) and with stretching. In example 10, a zinc chloride solution of polyacrylonitrile, containing a water-dispersible dye, is applied to cloth which is then immersed in water to precipitate the resin and colour. Other specified monomers are methacrylonitrile ; ethyl-, propyl- and butyl acrylates and methacrylates; allyl- and methallyl acetates ; methacrylamide, and methyl vinyl ketone. To aid coagulation of the polymer, salts such as sodium, aluminium and magnesium chlorides may be added after polymerization. Other specified catalysts are lauroyl, cocoanut oil and stearyl peroxides and aluminium chloride. Moulding compositions may be obtained by adding fillers or a pigment, e.g. wood flour, wood fibre, paper dust, clay, zein, glass wool, foliated glass, mica, cotton flock, silk flock, paper and cloth, granite dust, steel wool, silicon carbide, sand, titanium oxide, lithopone, lead oxide, chrome yellow, lead cyanamide and zinc cyanamide.. The Specification as open to inspection under Sect. 91 includes a further example involving polymerization of methyl itaconate in zinc chloride solution. This subject-matter does not appear in the Specification as accepted.
Patent GB-1429329-A (GB)
Title: Device for attaching foils to panels
IPC: B29C63/02
Filed: 1973-12-04
Abstract: 1429329 Laminates HALBERT Gebr 4 Dec 1973 [30 March 1973] 56115/73 Heading B5N A device for adhesively attaching foil 4 coated on one side with a heat actuatable adhesive to panels 2 comprises means, e.g. conveyer 1, for feeding a plurality of panels successively past means for applying the foil to a panel, e.g. guide roller 7 and pressure roller 8, separate heating means 3 for heating the panel and 6 for activating the adhesive on the foil, located prior to the position of contacting of the foil with the panel and means 12 for cutting the continuous foil after bonding to a panel surface. Guide roller 7 and pressure roller 8, which are pressed against the panels with the aid of springs 9 and 10, may be temperature controlled by water or other suitable fluid and may be maintained at constant temperature. Cutting device 12 may comprise reciprocating knife 13 sharpened on both sides so that it can carry out a cutting operation in both the upward and downward movements. The foil surface may be treated by the application thereto of a very small quantity of silicone oil by means of roller brushes 14. Foil may be attached to one or both surfaces of the panels.