baber/WOPTO huggingface dataset:
Patent GB-382371-A (GB)
Title: Improvements in or relating to aircraft having rotative sustaining means
IPC: B64C27/02
Filed: 1931-09-10
Abstract: 382,371. Aircraft with rotary wing systems. LA CIERVA, J. DE, Bush House, Aldwych, London. Sept. 10, 1931, No. 25382. [Class 4.] Relates to aircraft of the type having normally wind-driven rotary wing systems comprising a plurality of blades independently articulated to a common rotary hub member in such a manner as to be capable of swinging movements both in and transverse to the general plane of rotation of the set, and consists in providing locally strengthened parts at the roots of the blades whose resistance to longitudinal bending in a plane transverse to the chord of the blade is greater than the mean of such resistance for the whole blade. Fig. 1 shows a blade 10, the main strength member of which is a solid drawn tubular spar 11, the root end of which is inserted in a sleeve 12 forked at 13 for attachment to the heel. Portion a, b of the spar is of considerably greater wall thickness than the part c, d to which it is joined by a portion of tapering wall thickness b, c. The distance a, c may be one-quarter of the spar length. In Fig. 2 a spar 11 is formed with three different wall thicknesses, the thinnest being at the tip portion and the thickest extending over the middle third of the length of the blade. The portions of different section are joined by tapering portions e .. h respectively. According to modifications the sleeve 12 may be internally disposed, and the strengthening of the middle portion of the spar of Fig. 2 may be obtained by fitting an internal or external sleeve. Built-up spars of large size may be locally strengthened by the addition of coverplates to the top and bottom flanges. Specifications 327,211, [Class 4, Aeronautics], and 376,975 are referred to.
Patent GB-227205-A (GB)
Title: Improvements in or relating to frames for cycles, motor cycles, and the like
IPC: B62K11/04
Filed: 1923-10-13
Abstract: 227,205. Wiseman, Ltd., A., and Weaver, T. H. Oct. 13, 1923. Bicycles; frames.- Frames having a quadrilateral or loop formation are strengthened by two side structures g, g<2>, g<3> which carry the rear wheel. The frame may be bent from a single length of tubing the ends of which are brazed together at the rear end of the top tube. The side structures which are formed in planes parallel to the frame are connected to it by tubular members g<1>, g<1>, g<4>; the parts g may be continued parallel to parts b, c of the main frame and joined to the parts g<3> so as to form endless triangulated structures.
Patent GB-1208037-A (GB)
Title: Improvements in or relating to gas-filled electric discharge devices
Inventor: MOORE WILLIAM IVES
IPC: H01J65/04
Filed: 1968-05-28
Abstract: 1,208,037. T. R. switches; waveguide switches. M-O VALVE CO. Ltd. 15 Aug., 1969 [28 May, 1968], No. 25580/68. Headings H1D and H1W. A gas filled discharge device which is transparent to or short circuits r.f. energy below and above a certain power level respectively, comprises a sealed, gas filled tubular envelope 1 with coaxial conductor 3, and radially extending conducting members 5 and 6 forming capacitative and inductive elements respectively, the latter being joined to both the rod and the envelope. The gas filling may be a mixture of He and Tr in a 300 : 1 atomic ratio at a partial pressure of 0À7 torr and Xe at a partial pressure of 1À5 torr. Members 5 and 6 resonate at the centre of the frequency range over which the cell operates and a second pair of similar members may be provided at a spacing of one quarter wavelength at the resonant frequency. Rod 3 is of reduced diameter at the apertures in dielectric discs 2. Keep alive electrode 7 is included. In a T-R switch arrangement, the plate adjacent to the keep alive electrode is preferably nearer the receiver. The plates 4 are not necessarily of thickness small compared with the cross-sectional dimensions. In a T-B cell, the disc 2 near electrode 7 is omitted and the envelope is completed by a metal end wall, the device presenting an open circuit at the connector when the filling is ionized, otherwise a short-circuit.
Patent GB-518646-A (GB)
Title: Improvements in luminescent materials for electric discharge lamps
IPC: C09K11/68
Filed: 1938-09-01
Abstract: 518,646. Luminescent materials. GENERAL ELECTRIC CO., Ltd., and McKEAG, A. H. Sept. 1, 1938, No. 25596. [Class 39 (i)] A luminescent material for a gas or vapour filled electric discharge lamp, comprises calcium tungstate and excess calcium oxide in the proportions given by the relation (1 + x) a mols CaO per a mols WO3 where x is greater than 0.2; x should be less than 1.5 and is preferably about 0.75. The coating may be applied to the inside of the glass tubing before the tube is shaped or worked, and is particularly suited to mercury vapour low pressure lamps containing rare gas. Preferably, the heat-treated calcium tungstate is mixed with 15 per cent. by weight of pure oxide and heated to 400‹ C. for half an hour, but calcium oxide and tungstic oxide may be heated together in the desired proportions. Specification 494,299 [Group XX] is referred to.
Patent GB-871582-A (GB)
Title: Improvements in or relating to elastomer-coated fabrics
IPC: D04H1/64
Filed: 1958-08-08
Abstract: 871,582. Coated fabrics; laminates. DU PONT DE NEMOUR & CO., E.I. Aug. 8, 1958 [Aug. 21, 1957], No. 25605/58. Class 140. A heat resistant aromatic polyamide fabric the polymer being made up mainly of substantially wholly of units  wherein Ar l  and Ar 2  are the same or different aromatic radicals in which the chain-extending bonds are attached to non-adjacent carbon atoms in an aromatic ring, and having an inherent viscosity (as defined in the Specification) of at least 0.8 and a melting-point of at least 300 C. is coated with a cured copolymer containing 30 to 70% by weight of vinylidene fluoride and 70 to 30% by weight of polyhexafluoropropene. The base fabric may be woven or knitted or it may be an unwoven fabric or felt made from filaments or fibres of poly- (m-phenylene isophthalimide), poly-(4-methylm-phenylene isophthalimide), poly-(bis-4-phenylene) methane isophthalimide or poly-(mphenylene chloroisophthalimide). It may also contain other heat-resistant fibres such as polytetrafluoroethylene, glass, asbestos or metal fibres. The coating may contain curing agents, fillers, pigments, or plasticizers, and may be applied by calendering, doctor knife coating, dipping or extruding, or a preformed film of the coating may be laminated on to the base fabric. Specifications 789,786 and 871,581 are referred to.
Patent GB-1394866-A (GB)
Title: Cans
IPC: B65D43/02
Filed: 1972-06-01
Abstract: 1394866 Lever lids; container closures METAL BOX CO Ltd 21 March 1973 [1 June 1972] 25662/72 Headings B8D and B8T A paint can body is closed by a lid having an inverted U-shaped rim frictionally engaging the upper body portion 4 and its mouth-defining curl 3, the outer limb 6 of the lid being joined by a step 11 to a greater diameter lower portion 10 terminating in a curl 9 and having a clearancefit with the can body to facilitate easy-opening. The step 11 facilitates the stacking of lids without jamming. A ledge 12 spaced below the lid curl and formed by a circumferential inturned portion or one or more part-circumferential inturned portions provides a lid-removal leverage facility. In modifications, Figs. 2 and 3 (not shown), the upper body portion terminates in an outwardly-rolled curl and is stepped inwardly at 16 below the curl so that the upper body portion does not protrude radially of the lower body portion 1. A sealant coating may be applied to the lid rim.
Patent GB-1173906-A (GB)
Title: Isomerisation Process
Inventor: ALDHOUSE STEPHEN TALBOT EDWARD
IPC: B01J37/02
Filed: 1966-06-09
Abstract: 1,173,906. Isomerizing 4-methylpentene-1. BRITISH PETROLEUM CO. Ltd. 12 May, 1967 [9 June, 1966], No. 25682/66. Heading C5E. 4-Methylpentene-1 is isomerized to 4-methylpentene-2 by passing with or without a carrier gas over a supported catalyst comprising a major proportion of elemental nickel, the catalyst having been previously modified by treatment with elemental sulphur, an organic sulphur compound, H 2 S, CS 2  or a mixture thereof, such that the atomic ratio S : Ni is 0À01- 0.4, the isomerization not being permitted to exceed 95% conversion by controlling the space relatively of the feedstock and/or temperature of the reaction. The organic sulphur compound may be a thiophene, a thiacycloalkane or a dialkyl-monosulphide. The treatment of the catalyst is preferably carried out in the presence of hydrogen.
Patent GB-1387066-A (GB)
Title: Anti-skid control system for vehicles
IPC: B60T8/62
Filed: 1972-06-01
Abstract: 1387066 Antiskid braking systems TELDIX GmbH 1 June 1972 [7 June 1971 26 April 1972] 25687/72 Heading F2F A vehicle antiskid braking system includes at least two sensors 2a, 2b associated with different wheels or wheel groups and connected in sequence to a transmission and evaluation channel such as a differentiating member 5 containing threshold switches, the output signals of the channel being used to control the braking pressure of the wheels when there is a tendency to lock. The sensors provide a pulse sequence dependent in frequency on wheel speed, a transducer 4 converting the pulse sequence into a voltage. Gates 3a and 3b are alternately opened and closed by an astable multivibrator 13 to connect the sensors to the members 4, 5. A predetermined deceleration - b causes a signal on line 6a to change over a bi-stable element 7 and produce a signal on line 8 to actuate through an OR gate 11 a brake fluid inlet valve 10 and outlet valve 9 to lower braking pressure, an acceleration signal + b causing the inlet valve to open and the outlet valve to close to restore braking pressure. In other embodiments, Figs. 3a, 4a (not shown), three or four sensors are switched in turn to a single transducer one wheel being finely controlled whereas the others are coarsely controlled.
Patent GB-1306755-A (GB)
Title: Method and apparatus for continuously casting steel or other metals
IPC: B22D11/124
Filed: 1971-04-19
Abstract: 1306755 Continuous casting SOC CIVILE D'ETUDES DE CENTRIFUGATION 19 April 1971 [2 April 1970] 25703/71 Heading B3F Ferromagnetic metal, such as NiCr or NiCrMo steel, is continuously cast in a vertical mould 3, which is rotated about its vertical axis together with the casting 4, 5 and possibly also with withdrawing and cutting means while in at least one region of the solidifying casting, stationary or rated inductors, 7, 9 create electromagnetic fields to cause circulation of the molten core 5 in vertical planes. The circulation counteracts the effect of centripetal action which collects inclusions at the casting axis. Preferably the circulation is such that the flow is downward at the axis of the casting and upward along the inner surface of the solid shell 4 as indicated in Fig. 2. The casting is guided and extracted by rollers. Each inductor 7 or 9 comprises insulating plates 14-17, Fig. 2, between which are currentcarrying bars of up to five turns surrounding the casting 4, 5. As shown there are single-turn copper bars 11-13 with apertures for water spray nozzles 19. Each bar is connected to a phase of a polyphase supply for a current flow of 2,000-10,000 amps, at low voltage and a frequency less than 100 cps. Each bar may be connected in series with the corresponding bar of the other inductor.
Patent GB-362482-A (GB)
Title: Improvements in the manufacture and production of intermediate products and dyestuffs of the 1.2-benzanthraquinone series
Filed: 1930-08-28
Abstract: Dyes and intermediates of the 1.2-benzanthraquinone series are obtained by the action of chlorine or chlorinating agents on 1.2-benzanthraquinone or its derivatives in the presence of organic diluents and in the absence of inorganic strongly acid agents, and splitting off hydrogen chloride by known methods from the chlorine addition products thus obtained.  Thus, such splitting off may be effected by heating alone, or in organic diluents, or by treatment with inorganic or organic bases, acids or salts, which processes may be effected in one operation with the preparation of the chlorine addition products.  The chlorination may be accelerated by chemically active rays, such as p  sunlight or ultra-violet light; in some cases other reactions than addition of chlorine may also take place, such as chlorine substitution in hydroxy- or alkoxy-1.2-benzanthraquinones, replacement of bromine by chlorine in bromo-1.2-benzanthraquinones, and a saponification in the case of ethers of 1.2-benzanthraquinones.  Similarly the splitting off of hydrogen chloride may be attended by other reactions.  In examples (1) chlorine is led through 1.2-benzanthraquinone in carbon tetrachloride, and the precipitated reaction product heated above its melting point, or boiled in pyridine to give a dichloro-1.2-benzanthraquinone; (2) 1.2-benzanthraquinone is chlorinated in nitrobenzene, excess chlorine removed from the solution, pyridine added, and the mixture heated; the product is a dichloro-1.2-benzanthraquinone; (3) 3-chloro-1.2-benzanthraquinone (prepared by condensing phthalic anhydride with a -chloronaphthalene and ring-closing by means of sulphuric acid) is chlorinated in chloroform, the reaction product precipitated, and heated in a solution of alcoholic potash; (4) 3-methoxy-1.2-benzanthraquinone prepared by condensing phthalic anhydride with a -naphthol methyl ether and ring-closing by means of phosphorus pentoxide) or 4-chloro-3-methoxy-1.2-benzanthraquinone (prepared by chlorinating the 3-methoxy derivative by means of sulphuryl chloride) is chlorinated in chloroform; in either case the final product is the same, a chlorinated hydroxy derivative, and this is heated at 250-260 DEG  in benzophenone, or above its melting point in the absence of a solvent, to give a product dyeing cotton red-brown shades from the vat; it is stated that the product is probably a condensation of two molecules by sharing the hydroxy groups and splitting off hydrogen chloride; (5) Bz4-chloro- or Bz4-bromo-1.2-benzanthraquinone is treated as in (2) to give a trichloro-1.2-benzanthraquinone in each case; this product dyes cotton yellow shades from the vat.  The splitting off of halogen hydrides may also be carried out by boiling the nitrobenzene solution of the chlorine addition product, or by heating this solution with aluminium chloride, or by stirring it with ground potash at room temperature instead of heating with pyridine.
Patent GB-299589-A (GB)
Title: Improvement connected with brushes and/or combs
IPC: A46B5/00
Filed: 1927-09-29
Abstract: 299,589. Brown, A. F. Sept. 29, 1927. Cases combined with brushes, combs, and mirrors. - A device for toilet use comprises a flexible cover or case A of thin leather, fabric, &c. provided with fastening means C, D and a comb B or brush F, or both, so that the cover may overlap and enclose the toilet articles. The back of the comb B may be secured by cement or other means to a U-shaped length of material E secured to the cover A by sewing &c. In a modification, Fig. 7, a mirror K may be placed between the brush and comb. Instead of being cemented and sewn to the leather cover, the comb and brush may be secured by clips J, Fig. 10.
Patent GB-224524-A (GB)
Filed: 1924-10-29
Abstract: In obtaining sinalbin mustard oil from white mustard seeds, the seeds, freed from fatty oils by extraction with benzol, petroleum ether, &c. or by pressure, are formed into a pasty mass with water and are left for some time at ordinary temperature for the hydrolysis of the glucoside.  The mass is pressed and the residue is treated with ether to extract mustard oil.  The thick fluid extract is diluted with water to produce a flocculent precipitate which, after drying, is also extracted with ether.  The precipitation may be assisted by addition of acid or of sinapine bisulphate contained in the filtrate.  In a modified process, ether is added to the pasty mass before submitting it to pressure.ALSO:In obtaining sinalbin mustard oil from white mustard seeds, the seeds, freed from fatty oils by extraction with benzol, petroleum ether &c. or by pressure, are formed into a pasty mass with water and are left for some time at ordinary temperature for the hydrolysis of the glucoside.  The mass is pressed and the residue is treated with ether to extract mustard oil.  The thick fluid extract is diluted with water to produce a flocculent precipitate which, after drying, is also extracted with ether. The precipitation may be assisted by addition of acid or of sinapine bisulphate contained in the filtrate.  In a modified process, ether is added to the pasty mass before submitting it to pressure.
Patent GB-668345-A (GB)
Title: Improvements relating to pneumatically actuated mechanism for controlling the feed of machine tools
IPC: B23Q5/26
Filed: 1949-10-07
Abstract: 668,345. Machine tool details. HUGHES, Ltd., G. H., and CRAWSHAW, A. L. Sept. 15, 1950 [Oct. 7, 1949; Nov. 17, 1949], Nos. 25762/49 and 29392/49. Class 83 (iii). A pneumatically - actuated mechanism for controlling the feed of a machine tool comprises a pneumatic cylinder 3 and an associated spring-loaded valve 27 for determining the direction of traverse in the cylinder of a doubleacting piston connected to a rack 5 and pinion 7, whereby the feed is imparted to the tool, means 22 for maintaining the valve mechanism in one position against the spring action and means associated with the piston for releasing the valve after a variable predetermined stroke. The pistonrod 4 carries a member 9 fitted with an adjustable stop-nut 11. At the end of a feed-stroke the nut 11 'abuts a nut 13 adjustable on a tube 12. The tube 12 carries a bevelled collar 17 which releases the lever 22 and allows the valve 27 to be reversed by its spring. The feed-stroke is initiated by the movement of a rod 20 within the tube 12 by means of a projection 29 attached to a hand-lever. The movement can be reversed at any time by a plunger 34. The rate of feed can be adjusted by a hydraulic device comprising a piston 36 which allows free flow in one direction and which carries adjustable stops 38, 40 on its rod 36a. Adjustment of the. nut 38 determines the point at which the rate of feed is decreased and a valve 42 adjusts the subsequent feed-speed. The thrust on the tool is adjusted by a valve in the supply-line to the cylinder 3. A damping cylinder 43 is associated with the hydraulic device. In a modification, the reversal of the valve 27, Fig. 2, is effected by a solenoid 47 actuated by a micro-switch 48. A second micro-switch 51 provides for fully automatic control.
Patent GB-1153712-A (GB)
Title: Process for preparing Fluorinated Methane and Ethane Derivatives
IPC: C07C17/10
Filed: 1966-06-09
Abstract: 1,153,712. Fluorination process. FARBWERKE HOECHST A.G. 9 June, 1966 [9 June, 1965], No. 25806/66. Heading C2C. Fluorinated and chlorofluorinated methanes and ethanes are prepared by fluorination of chlorinated methanes and ethanes by reaction with hydrogen fluoride in the presence of an antimony halide catalyst which is in the liquid state, the reaction being conducted in a cylindrical reactor tube without the use of any mechanical device for stirring, pumping or mixing the reaction mixture, the volume of the catalyst being sufficient to fill the reactor tube to a height of not less than 5 times the internal diameter of the reactor tube. The reaction may be conducted in the presence of elemental chlorine.
Patent GB-519819-A (GB)
Title: Improvements in heat regulators for sterilizing and other apparatus in which liquid is heated
IPC: G05D23/12
Filed: 1938-09-05
Abstract: 519,819. Heating water; thermostats. GRIFFITHS, E. E. Sept 5, 1938, No. 25862. [Classes 64 (i) and 64 (ii)] Steam from a sterilizing or like chamber 17 in which water is heated to boiling point escapes through a valve 29 which is set to pass all the steam generated at a desired rate of evaporation, and when this rate is exceeded, surplus steam enters a casing 22 of a thermostat controlling the heat supply valve 14 and escapes progressively, according to the quantity of excess steam, through apertures 34 along the casing. In place of the apertures, fins or cooling coils may be provided around the thermostat casing to condense the steam progressively. Specification 509,697 is referred to.
Patent GB-495905-A (GB)
Title: Improvements in electric discharge devices
IPC: H01J61/20
Filed: 1937-09-23
Abstract: 495,905. Supply systems for discharge lamps. GENERAL ELECTRIC CO., Ltd. (Patent-Treuhand-Ges. fiir Elektrische Gl³hlampen) Sept. 23, 1937, Nos. 25876/37 and 11037/38. [Class 38 (iv)] [Also in Group XL] A mercury-vapour discharge device having a characteristic which is positive or only slightly negative works stably with a series resistor dropping not more than one-fifth of the supply voltage, which is usually D.C. The series resistor may be omitted in some cases.
Patent GB-814927-A (GB)
Title: Solventless siloxane resins
Filed: 1957-08-16
Abstract: A siloxane composition curable at elevated temperature comprises (1) a liquid siloxane having a viscosity of less than 60 cs. at 25 DEG C., at least two SiH groups per molecule and at least one aryl or arylene radical per molecule in which siloxane any remaining valencies of the Si atoms are satisfied by methyl radicals; (2) a polysiloxane containing from 15 to 60 mol. per cent of vinyl siloxane, having an average of 8 Si atoms per molecule, a phenyl/Si ratio of from 0.25 : 1 to 1.75 : 1 and having on the average at least one hydrocarbon radical per Si atom, any remaining valencies of the Si atoms being satisfied with methyl radicals, siloxanes (1) and (2) being present in amounts such that the ratio of the number of SiH groups in (1) to the vinyl radicals in (2) is from 0.4 : 1 to 2 : 1, and (3) a curing agent.  The compositions may be cured by mixing them with a platinum catalyst, e.g. platinum suspended on charcoal, chloroplatinic acid, platinic chloride and platinic sulphate, and heating at 50 DEG  to 110 DEG  C.  The compositions may be plasticized with low molecular weight phenylvinylsiloxanes having less than 8 Si atoms per molecule, such as symmetrical divinyldimethyldiphenyl-siloxane as described in Specification 797,979, or with other siloxanes or heat-stable organic materials compatible therewith.  Heat-stable fillers, e.g. glass fibres, silica, sand, clays, powdered glass, asbestos, C. black, iron oxide, titania and magnesia, may also be added.  In typical examples: (1) a copolymer of mono-vinyl-, monophenyl-, phenylvinyl- and phenyl-methyl-siloxanes was mixed H.(CH3)2Si.OSi (C6H5)2.OSi(CH2)2H and a solution of chloroplatinic acid in diethyleneglycol dimethylether, cast into a bar, and cured at 110 DEG  C. and finally at 150 DEG  C.; (10) a divinyl-, phenyl-vinyl-, phenylmethyl- and phenyldimethyl-siloxane copolymer was mixed with cyclic (C6H5.H.SiO)4 and cured as in (1).  Uses.-For impregnating, encapsulating and potting electrical equipment, for coating electrical conductors and for use as protective coatings for metal and other surfaces. Specification 814,660 also is referred to.
Patent GB-1116895-A (GB)
Title: Process for cleaning metal surfaces
IPC: C23G1/02
Filed: 1966-06-10
Abstract: Metal surfaces, e.g. boilers and stainless steel pipes, are cleaned by applying an aqueous solution of a synergistic mixture of a sulphamic acid or salt or ester thereof and an aliphatic hydroxycarboxylic acid, e.g. glycollic acid or metyltartronic acid. Other acids not exhibiting a synergistic cleaning effect with sulphamic acid e.g. citric, lactic and gluconic acids may also be present.  Corrosion inhibitors and sequestering agents, e.g. e.d.t.a., may also be included. Other additives may be: NH4F, NH4HF2, NaF, HF, HNO3, N2H4 or NH2OH.  The solution may be used at 90-150 DEG C. and may have a pH as low as 1.5 by the addition of H2SO4.