baber/WOPTO huggingface dataset:
Patent GB-567493-A (GB)
Title: Fixation of finely divided substances on textile fabrics, films, foils and like materials
IPC: D06P1/44
Filed: 1943-02-22
Abstract: Textile fibres, filaments, fabrics, films and like materials are delustred and rendered more resistant to fire by treating the materials with a water soluble acid and subsequently with a paste, containing a pigment or pigments and a water-soluble condensation product of formaldehyde with an aminotriazine, e.g. melamine, ammeline, or ammelide, or substitution products thereof, and converting the condensation product to the water-insoluble form on the material by the action of heat.  The process is applicable to materials having a basis of cellulose derivatives such as cellulose acetate, propionate, butyrate, acetate-propionate, acetatebutyrate, ethyl and benzyl cellulose, ethyl cellulose acetate, regenerated cellulose, polymers and copolymers of an unsaturated compound such as polystyrene, polymethyl-methacrylate, polyvinylidene chloride, or polyvinyl chloride-acetate and linear polyamides.  Specified pigments are titanium oxide, barium sulphate, powdered bronze and powdered aluminium.  Specified water-soluble pretreatment acids are tartaric, citric, malic, malonic and oxalic acids.  In an example, powdered melamine is dissolved by heat in neutral aqueous formaldehyde.  The mixture is cooled and the precipitated formaldehyde-melamine product is collected and ground to a powder.  The fabric to be treated is padded with an aqueous solution of tartaric acid, dried, printed with an aqueous paste containing the formaldehyde-melamine powder, titanium dioxide and/or barium sulphate and gum tragacanth and dried. Local effects are obtained by alkaline resists, and coloured lustrous effects are produced by incorporating a colouring agent, e.g. a vat dyestuff, into the resist.  Coloured effects may also be produced by introducing coloured pigments or dyestuffs, such as cotton dyes, vat dyes in the leuco form, basic dyes, or dispersed insoluble cellulose ester dyes, into the pigment-condensation product composition. According to the Provisional Specification, the materials may be treated with the pigment-condensation product paste and the subjected to a treatment with steam or to a treatment with aqueous acetic or other acid or with the vapours of a volatile acid.  Alternatively, a small amount of acid, e.g. boric acid, or a potentially acid substance, e.g. ammonium acetate, phosphate or tartrate, may be incorporated in the pigment-condensation product paste.  The Provisional Specification also describes the use of other water-soluble condensation products employing other aldehydes, e.g. benzaldehyde or furfural, with other bases, e.g. ethylene diamine, hexamethylene diamine, urea, thiourea, guanidine dicyandiamide or diguanide, or the base may be replaced by a phenol, e.g. phenol or resorcinol.
Patent GB-970885-A (GB)
Title: Preparation of high purity titanium dioxide
Inventor: LONG RAY SMITH
IPC: C01G23/00
Filed: 1962-02-02
Abstract: Pigment grade titanium dioxide is prepared by treating a titaniferous material with sulphuric acid at 40-80 DEG  C., leaching with water, selectively extracting titanium values with a liquid mono- or di-alkyl orthophosphoric acid, or contaminants with an alkyl phosphate or alkyl amine; recovering titanium as the hydrated oxide, and calcining at above 800 DEG  C. At least one equivalent of acid, preferably 90% or stronger, per equivalent of metal is used, and the material may be pretreated with an inorganic base.  Contaminants are extracted if a trialkyl phosphate having alkyl groups with 4-8 carbon atoms, e.g. tributylphosphate, or an alkylamine having alkyl groups with 6-12 carbon atoms, e.g. triisooctylamine, is used as extractant; titanium is then precipitated from the acid leachate by digestion at 80-100 DEG  C., preferably with an inorganic base, to give the hydrated oxide.  Alternatively, titanium may be extracted from the leach liquor using a mono- or di-alkyl orthophosphoric acid having alkyl groups with 4-18 carbon atoms, e.g. di-(2-ethyl hexyl)-orthophosphoric acid, monododecyl orthophosphoric acid, and monoheptadecyl orthophosphoric acid; and any iron also extracted may be removed by scrubbing with 3-12M. HCl.  Titanium is then recovered by adding an aqueous solution of either (1) an alkali metal or ammonium hydroxide or carbonate, or a mixture of ammonium hydroxide and carbonate, to precipitate hydrated titanium oxide; or (2) hydrogen fluoride or an alkali metal or ammonium fluoride or bifluoride, to precipitate a titanium-ammonium double fluoride, which is converted into the hydrated oxide by reaction with ammonia.  The organic extractant is preferably carried in a water-immiscible solvent, e.g. kerosenes, toluene, benzene and halogenated and other aromatics, in 0.3-3.5M concentration. The organic/aqueous phase ratio may be from 1/10 to 1/1.
Patent GB-951264-A (GB)
Title: Improvements in and relating to circular knitting machines
IPC: D04B9/18
Filed: 1961-01-26
Abstract: 951,264. Feeding reinforcing yarns. G. BILLI. Jan. 26, 1961 [Jan. 29, 1960], No. 3035/61. Heading D1C. A circular machine has means for feeding, at two different feed positions, splicing yarns to the same predetermined section of the needler, which section is variable for every revolution of the needle cylinder. A pattern drum 12 rotates at the same speed as the needle cylinder 1, has a cam recess 12a the same shape as the desired reinforcing, e.g. a heel, and is axially slidable so that the dwell of tappet sets 15, 22 : 27, 33 in the cam recess 12a is variable in accordance with the shape of the cam. To prevent the tappets 15, 27 from being moved sideways by the action of the cam recess 12a their ends (15a, Fig.4) are guided laterally by rollers 18. The tappets 15, 22 lower feed guides 2, 3 to feed in the splicing yarns and the relative angular displacement of the tappets 15, 22 is the same as that of the guides 2, 3 so that the yarns are fed to the same section of needles. The tappets 22, 27 operate cutters to sever the splicing yarns.
Patent GB-1489656-A (GB)
Title: Production of cationic condensation products
IPC: C08G12/10
Filed: 1975-01-24
Abstract: 1489656 Paper-treating aminoplast resins BASF AG 24 Jan 1975 [25 Jan 1974] 3118/75 Heading C3R [Also in Divisions D1-D2] A condensation product is prepared in a single step reaction by mixing together (a) a neutralization product of pH 6-8 obtained from at least one carboxylic acid of pK 2  value at least 3À5 and ammonia and/or at least one C 1-5  primary alkyl amine, (b) 0À8-1À4 mols per carboxyl group in (a) of urea or an equivalent amount of another carbonamide, (c) 0À8-1À4 mols per carboxyl group in (a) of dicyandiamide, and (d) 3À2-4À5 moles of formaldehyde per mole of dicyandiaamide, and, after the reaction mixture has reached its highest temperature (due to the spontaneous reaction) and a constant pH, heating it at 70-100‹ C. for 0À5-5 hours. Suitable acids for (a) are C 1-5  alkane monocarboxylic acids; suitable amides (b) are formamide, acetamide, urea, alkyl- and dialkylureas, and urethanes. In Examples 1-4 a solution of 1 mole of urea and 0À75-1À25 moles of ammonia is brought to pH 7 with formic acid, then 1 mole of dicyandiamide and 3À5-4À2 moles of formalin are added; the pH becomes 5 and the mixture is heated for 0À15-5 hours, then neutralized with NaOH. In Example 5 2 moles of formamide or acetamide are used instead of the urea in a similar process. The products may be used as solutions or be spray dried. Uses.-Dye fixing agents and sizes for paper.
Patent GB-700370-A (GB)
Title: Improvements in or relating to mandrels for use in tube bending operations
IPC: B21D9/03
Filed: 1951-02-08
Abstract: 700,370. Mandrels. HILMOR, Ltd., and HAWES, J. H. Feb. 8, 1952 [Feb. 8, 1951]; No. 3141/51. Class 83 (4) A tube bending mandrel comprises links with spherical portions 21 bored at an inclination to the line joining pivot pin holes 15, 19 to receive projections 20 on the spherical portions. The end faces 23 are normal to the bores. The links support a spherical head 26 on a screwed rod 10.
Patent GB-1167105-A (GB)
Title: Process for Manufacturing 3,3-Dialkyldiazacyclopropanes.
IPC: C07D229/00
Filed: 1968-01-22
Abstract: 1,167,105. 3,3 - Dialkyldiazacyclopropanes. OTSUKA KAGAKU YAKUHIN K.K. 22 Jan., 1968 [26 Jan., 1967], No. 3204/68. Heading C2C. 3,3-Dialkyldiazacyclopropanes are prepared by the reaction of ammonia, chlorine and a ketone of formula in which R 1  and R, are C 1 -C 4 alkyl groups the sum of carbon atoms in R 1  and R 2  being from 2 to 5, the reaction being carried out in the presence of an amount of an ammonium salt of an inorganic acid sufficient to maintain a pH value of 10-13 during the reaction, and using a hypochlorite as the chlorine source.
Patent GB-753361-A (GB)
Title: Method and apparatus for cutting gear tooth surfaces
IPC: B23F17/00
Filed: 1954-02-03
Abstract: 753,361. Toothed gearing. NATIONAL BROACH & MACHINE CO. Feb. 3, 1954 [March 4, 1953], No. 3207/54. Class 80(1) [Also in Group XXII] Apparatus for machining the surfaces of gear teeth comprises an annular cutter 18 having a series of radially inwardly directed blades 20 each of which has a pair of cutting edges at its top, a support for a work gear W, means for effecting relative motion of the gear around the cutter, and means 100, 102 for effecting relative tangential feed movement between the gear and cutter (see Group XXII). The cutter may cut one or more identical or dissimilar grooves. 136, Figs. 8 and 9, in the gearflanks, either centrally, or at the ends, or up to a shoulder. It may also chamfer or round the edges of the teeth or produce crowned, tapered or concave flanks on the teeth. By adjustment of the blades and of the radial position of the work, other modifications such as tip relief may be imparted to the teeth. The cutters may be modified to operate on helical gears.
Patent GB-635998-A (GB)
Title: Improvements in or relating to slideways for elements of metal-cutting machine tools and the like
IPC: F16B1/00
Filed: 1947-02-04
Abstract: 635,998. Machine framings. MASCHERPA, A. Feb. 4, 1947, No. 3259. Convention date, Feb. 12, 1946. [Class 83 (iii)] Slideways for machine-tools comprise two or more guides 10 of circular cross-section which support a table 9 and which are each supported in at least two positions by two wedge-shaped blocks 11 carried by supports on the machine frame 1 so as to be movable in the same or in opposite directions transversely of the guides. The blocks 11 are adjusted by screws 5 and locked by bolts 4. Bolts 7 lock the guides..The table 9 is clamped in position by members 13 which are moved simultaneously by a hand-lever 21 acting through wedges 15 releasable by springs 14.
Patent GB-564900-A (GB)
Title: Improvements in safety devices for cranes, windlasses and the like
IPC: B66D1/06
Filed: 1943-03-01
Abstract: 564,900. Winding apparatus. WIGGLESWORTH, G..H. March 1, 1943, No. 3283. [Class 78 (v)] To prevent over-winding and over-running of an electrically operated crane, windlass or like machine, a screw 2 connected to the barrel carries a nut which when the screw is rotated is movable along the screw until it reaches a predetermined position corresponding to the highest or lowest position of the load, the nut then being locked to a drum, the rim of which, on subsequent rotation of the drum, acts on a lever to operate a switch to stop the driving mechanism. Movement of the screw in the opposite direction immediately releases the nut and re-sets the switch. As shown, the screw carries two nuts 3, 33 having extensions 3a, 3b engaging grooves 2a, 2b and 22a, 22b in sleeves 4, 4a which are enclosed in a sleeve 7 and an insulating sleeve 8 supporting metal rings 8a, 8b, 8c, 8d. Drums 5, 6 integral with or secured to the sleeves 4, 4a are formed with peripheral spiral grooves 5a, 5b and contain peripheral slots 5c through which pass levers 10 to engage spring-pressed double-arm levers 11 pivoted to the respective drums. In operation, when a load is being raised, the screw 2 is rotated clockwise, Fig. 2, and when the crane hook has reached the desired highest point, the nut 3 contacts a shoulder 2c on the screw further rotation of which causes the drum 5 to revolve, the edge of the slot 5c then moving the lever 10 to force fingers 14b, 14c out of contact with the rings 8a, 8b, thus stopping the lifting mechanism. As the lever 10 is moved away from the lever 11, the spring 13 forces the lover 11 to rotate until one arm engages a ratchet 12 secured to the screw 2. When the control mechanism is moved to lower the load, the screw 2 is rotated in the opposite direction and the ratchet 12 acting through the lever 11 causes the drum 5 to rotate similarly until the lever 10 re-enters the slot 5c to disengage the lever 11 from the ratchet and re-set the contact fingers 14b, 14c. Assuming the screw 2 to be rotating in a clockwise direction, should the winding mechanism over-run after the fingers 14b, 14c are moved to break the circuit, the parts would occupy the positions shown in Fig. 3. As the drum 5 continues to rotate, the lever 10 enters the spiral groove 5a and if the drum makes one or more complete revolutions the lever is oscillated on its pivot and prevented from entering the slot 5c. Lowering of the load then continues until the desired highest point is reached when the lever 10 enters the slot 5c and re-sets the switch. During lowering, the load is stopped at the lowest point by the parts shown in the right-hand half of Fig. 1 which function in a similar manner to those described above for raising the load.
Patent GB-289573-A (GB)
Title: Improvements relating to magneto electric machines
IPC: H02K1/27
Filed: 1927-02-07
Abstract: 289,573. Lucas, Ltd., J., and Turner, E. O. Feb. 7, 1927. Magneto-electric machines.-In a rotating- magnet magneto the rotor consists of a disc-like magnet with polar projections extending from one side, a pole-piece carrier of non-magnetic material secured to the spindle, flanged segmental polepieces secured to the carrier and co-operating with the ends of the polar projections of the magnet and a peg or like device engaging the magnet and spindle for holding the magnet, in position. Fig. 1 shows a section of one form of complete rotor and Figs. 2 and 5 are outside views of the pole-piece carrier and the magnet respectively. The magnet disc a, is cast with short polar projections b engaging segmental polepieces f riveted to a non-magnetic carrier e. The pole-pieces have overhanging flanges which, together with the ends of the magnet poles, are the only parts of the magnet assembly which require. to be machined or ground to fine limits. The magnet is held with its end in close contact with the pole-pieces and is secured to the shaft by a peg g which lies in a groove h in the. magnet. A non-magnetic sleeve : i separates the magnet from the shaft.
Patent GB-777878-A (GB)
Title: Improvements relating to pallets
Inventor: METCALF JOHN HERBERT
IPC: B65D19/08
Filed: 1955-02-05
Abstract: 777,878. Pallets for handling loads. VICTROLEC, Ltd. Jan. 25, 1956 [Feb. 5, 1955], No. 3472/55. Class 78 (4). The foot of a pallet comprises a length of angle iron the upper flange 13 of which is cut to permit the flange 14 to bend at right angles so that the flange 13 forms a surface which can be welded to the angle iron leg 10 of the pallet and which serves to rest on an upper corner of a pallet next below in a stack. The connection between the leg and the foot may be reinforced, as shown, by angle irons 17, welded to the flange 13 and to the leg 10.
Patent GB-1086252-A (GB)
Title: Continuous chromatographic analysis
IPC: G01N30/24
Filed: 1965-01-27
Abstract: 1,086,252. Analysis of a mixture of fluid components. UNIVERSAL OIL PRODUCTS CO. Jan. 27, 1965 [Jan.28, 1964], No. 3501/65. Heading B1L. In the gas chromatographic analysis of a mixture of fluid components at least one of which is selectively sorbed by the solid sorbent and at least one other of which is relatively less sorbed by the sorbent, the sorbent is pretreated by contact with the selectively sorbed component until the sorbent is saturated with this component, then the fluid mixture to be analysed is passed together with a carrier gas through the pretreated sorbent and the effluent is applied to a detector which develops a substantially continuous signal characteristic of the content of selectively sorbed component in the initial mixture, this signal having superimposed on it a discontinuous signal characteristic of the content of the less-sorbed component of the mixture. In the apparatus of Fig. 1, sample valve 10 comprises reciprocable plug 16 having transverse ports 17, 18, 19 and moving between stator plates 11. In the position shown, sample gas stream is flowing from 26 through line 28, port 18 and line 29 while carrier gas is flowing from 32 through line 33, reference detector 36. port 19, column 39 and measuring detector 40. On downward movement of plug 16, port 18 comes into communication with the carrier gas stream and the sample from 18 is swept into column 39. The preferred sorbents are 3A to 7A pore diameter zeolites: others are mentioned. Mixtures analysed may be of hydrocarbons, water with various gases, hydrogen sulphide or mercaptans with various gases, carbon dioxide with various gases, ethylene and propylene or both with various gases, isobutane with one or more C 1 -C 3 , paraffins or mononuclear aromatic hydrocarbons with polynuclear aromatic hydrocarbons.
Patent GB-430043-A (GB)
Title: Improvements in horse shoes
IPC: A01L1/02
Filed: 1934-02-03
Abstract: 430,043. Horseshoes. BRANGWIN, J. A., Crutchmore, near Luton, Bedfordshire. Feb. 3, 1934, No. 3574. [Class 67] A fullered or channelled shoe is formed with a number of transverse grooves F in both the inner and outer ridges D, E of the outer limb B and in the inner ridge C only of the inner limb A.
Patent GB-982656-A (GB)
Title: Improvements in envelope flap conditioning apparatus
Inventor: RASTORGUYEFF ANDREW WLADIMIR
IPC: B43M3/04
Filed: 1964-01-28
Abstract: 982,656. Opening envelopes prior to filling. PITNEY-BOWES Inc. Jan. 28, 1964, No. 3594/64. Heading B8C. The flaps of envelopes 52, fed from a stack by a friction roller 53, are opened by means of a member 60 having a flap-raising nose 66, the member 60 being pivoted against the action of a spring 67 as the leading edge of the envelope engages depending fingers 63. The envelopes are fed from a hopper 51 between a belt-driven feed-roller 14 and guide roller 45 which may be biased by gravity or by springs. The roller 14 is grooved to receive the fingers 63. After passing round the feed roller 14 the envelope is guided, by a fixed plate 43, between a pair of disc rollers 31 and feed belts 21 which are held in engagement with the rollers 31 by spring- loaded rollers 35. The open envelopes are expelled along a fixed guide member 44.
Patent GB-915636-A (GB)
Title: Novel alkylated pregnadienes
IPC: C07J5/00
Filed: 1959-03-17
Abstract: The invention comprises steroids of the general formula <FORM:0915636/IV (b)/1> wherein X represents hydrogen, fluorine, chlorine or bromine, Y represents =0 or H,b -OH, Z represents an alkyl radical having less than 6 carbon atoms, R represents hydrogen, an alkanoyl radical having not more than 8 carbon atoms, an aromatic or heterocyclic carboxylic acid acyl radical or a radical derived from a polybasic inorganic acid such as sulphuric and phosphoric acids, and A represents a bromine or chlorine atom, or a hydroxy radical, or the acyloxy radical of an aliphatic carboxylic acid p having less than 6 carbon atoms in the aliphatic radical or of an aliphatic or aromatic sulphonic acid, and the preparation of the 6-chloro and bromo steroids of the above general formula by reacting the corresponding 6-unsubstituted steroids with a chlorinating or brominating agent such as N-bromosuccinimide, N-bromoacetamide, N-chlorosuccinimide, bromine and chlorine, the preparation of the 6-hydroxy steroids of the general formula above by subjecting the corresponding 6-desoxy-steroids to the microbiological oxygenating activity of an organism of the genus Chaetomium, e.g. by an analogous procedure to that described in Specification 901,092, and the preparation of the 6-esters of the above general formula by esterifying the corresponding 6-hydroxy steroids.  Prior to introducing a substituent at the 6-position, it is preferred to esterify any reactive hydroxyl groups which may be present e.g. at the 11- or 21-position.  Thus, for example, in preparing 6-bromo-16a -methyl-prednisone, it is preferable to use a 21-ester of 16a -methylprednisone as the reactant.  In those instances where there is an 11-hydroxy group such as when 16a -methylprednisolone is used as the reactant, the conditions necessary to esterify the 11-hydroxy group esterify both the 17a - and 21-hydroxy groups as well. Following the introduction of the 6-substituent, the ester groups may be hydrolysed chemically by means of dilute acid or microbiologically by means of Flavobacterium dehydrogenans, and in the case of 6-halo substituted compounds removal of the ester groups may also be carried out with a strong acid such as p-toluenesulphonic acid. Specification 796,769 is referred to.
Patent GB-832541-A (GB)
Title: Improvements in and relating to circuits for electric discharge lamps
Inventor: CHAPMAN DONALD FREDERICK
IPC: H05B41/232
Filed: 1957-02-01
Abstract: 832,541. Supply systems for discharge lamps. THORN ELECTRICAL INDUSTRIES Ltd. Jan. 31, 1958 [Feb. 1, 1957], No. 3655/57. Class 38 (4). In a transformer fed circuit for supplying series connected discharge lamps, the transformer is provided with one or more air gaps to substantially reduce the flux density therein. The transformer has tightly coupled primary and secondary windings 15, 16 supplying the discharge current to lamps 10, 11 through a choke 24 and a capacitor 25, and heater windings 17-19 connected to the lamp cathodes 20-23. An additional capacitor 26 ensures uniformly sequential starting. The transformer air gaps and positions of the windings are adjustable. The dimentional details of the transformer are given in the Specification.
Patent GB-678920-A (GB)
Title: Aqueous polymer dispersions
IPC: C09K23/00
Filed: 1949-02-10
Abstract: Aqueous polymer dispersions containing one or more plasticizers, stabilizers and/or colourants in the dispersed state are prepared by mixing an aqueous polymer suspension either (i) with the jelly-like mass consisting of two liquid phases and produced by kneading, stirring or otherwise mechanically working the plasticizer &c. with a concentrated solution of an emulsifier compatible with the emulsifier occurring in the aqueous polymer suspension, or (ii) with the emulsion formed by mixing this jelly-like mass with water.  When it is desired to have the plasticizer &c. in the final dispersion mixed with a substantially water-insoluble liquid such as a mineral oil fraction, benzene, toluene, diethyl ether or ethyl acetate, the plasticizer &c. should be mixed with this liquid and a concentrated solution of emulsifier.  The polymer may be a polymer or copolymer of a vinyl halide or vinylidene halide, vinyl acetate, an acrylate or methacrylate, acrylo- or methacrylonitrile, styrene, a fumarate, butadiene, isoprene or chloroprene.  The plasticizer may be dibutyl phthalate, dioctyl phthalate, chlorinated diphenyl, a high-boiling aromatic petroleum extract or a chlorinated paraffin, and the stabilizer may be naphthyl glycide ether, resorcinol diglycide ether or diphenyl thiourea.  The emulsifier may be any of those normally used and preferably the same emulsifier is used in the polymer suspension and in the plasticizer &c. jelly.  Examples describe dispersions comprising polyvinyl chloride, sodium mersolate as emulsifier and dioctyl phthalate.  The dispersion of the invention may be used for coating and/or impregnating paper or textile fabrics, with or without the addition of thickening agents such as casein and methyl cellulose.