baber/WOPTO huggingface dataset:
Patent GB-440050-A (GB)
Title: Method of testing the ductility of metal sheets
IPC: G01N3/28
Filed: 1934-09-15
Abstract: 440,050. Testing ductility of sheet metal. VEREINIGTE STAHLWERKE AKT.-GES., 69, Breitestfasse, Dusseldorf, Germany. Sept. 15, 1934, No. 26571. Convention date, April 20. [Class 106 (ii)] A process for testing the ductility of metal sheets comprises taking a specimen strip shaped as a wedge or trapezium and.drawing it in known manner into a rectangular shape, and then cupping it in a known mannerfor instance using the Erichsen test-by means of a mandrel until the metal tears. The specimen is marked with co-ordinates before the test and the deformation noted after the test.
Patent GB-1260907-A (GB)
Title: Indole derivatives
Inventor: TROXLER FRANZ
IPC: C07D209/08
Filed: 1969-05-23
Abstract: 1,260,907. Indole derivatives. SANDOZ Ltd. 23 May, 1969 [10 Dec., 1968; 7 June, 1968; 4 Sept., 1968], No. 26581/69. Addition to 1,238,968. Heading C2C. Compounds of the formula (R=H, CH 3 ) and their salts are prepared by (a) reacting 4-hydroxy-2-methylindole with epichlorohydrin or epibromohydrin in an alkaline medium, reacting the product with isopropylamine or tert.-butylamine or their N-benzyl derivatives and removing any benzyl group present, (b) reacting benzylisopropylamine or benzyl tert.-butylamine with epichlorohydrin or epibromohydrin, reacting the product with 4- hydroxy-2-methylindole in an alkaline medium and removing any benzyl group present or (c) reducing 4-(2-hydroxy-3-isopropylidenaminopropoxy)-2-methylindole, optionally followed in each case by salt formation.  The above compounds are #-adrenergic blocking agents and may be administered in the form of pharmaceutical preparations containing them in association with a carrier.
Patent GB-735532-A (GB)
Title: Improvements in and relating to electrical insulation
IPC: H01B3/48
Filed: 1952-10-23
Abstract: 735,532. Conductors. GENERAL ELECTRIC CO. Oct. 23, 1952 [Oct. 31, 1951], No. 26620/52. Drawings to Specification. Class 36. [Also in Group VIII] A conductor is insulated with an adhesive fibrous tape of inorganic material, such as asbestos, spun glass or spun quartz, which is impregnated with a copolymer of acrylic acid esters and is first coated with a pre-condensed resinous product obtained by reacting an acidic unsaturated polyester and an epoxide resin and then coated with a reaction product of an acidic polyester of a non-polymerizable dicarboxylic acid with an epoxide resin. After application to the conductor, which may itself first be made adhesive, the coated tape is heated under pressure to convert the resinous products to a solid, infusible state. The tape may first be impregnated with starch solution and dried, after which it is impregnated with, for example, a solution in toluene of a copolymer of methyl acrylate and ethyl acrylate and the solvent evaporated. The first coating material may comprise the resinous reaction product of ethylene glycol maleate and an epoxide resin, as described in Specification 735,531, [Group IV (a)]. In order to prevent the coated tape sticking to itself before application to the conductor, it is further coated with a powder consisting of the reaction product of an acidic polyester of a non-polymerizable dicarboxylic acid with an epoxide resin, as described in Specification 732,253, [Group VIII]. The application of heat and pressure to the wrapped conductor consolidates the coatings and converts them to the solid infusible state.
Patent GB-399647-A (GB)
Title: Insulation of floors against the transmission of sound
IPC: E04F15/20
Filed: 1932-09-26
Abstract: 399,647. Floors. CULLUM, D. J. W., 50, Britannia Street. King's Cross, London. Sept. 26, 1932, No. 26650. [Class 20 (iv).] A floor comprises a foundation A, a layer of metal or other slabs D supported by resilient pads B in such manner as to load or compress such strips and to provide an enclosed space between the slabs and the foundation, and a floor finish comprising floor boards F supported above the slabs D. The pads B, which may be of cork or felt, are secured at spaced distances to the undersurfaces of the joists E, as shown in Fig. 1, and the latter are provided with shoulders e<1> for supporting the slabs D. Alternatively, the slabs D are supported directly upon the pads B, as shown in Fig. 3, and are recessed at their upper edges to provide spaces for floor joists E. The floor boards F are secured to the upper faces of the joists. The Provisional Specification describes also the use of corrugated slabs D.
Patent GB-1347271-A (GB)
Title: Deformation testing of materials
IPC: G01N33/44
Filed: 1971-04-19
Abstract: 1347271 Testing materials SNAM PROGETTI SpA 19 April 1971 [9 April 1970] 26692/71 Heading G1N Apparatus for testing materials comprises a press driven by a motor 20 for deforming a sample of material at constant rate, a transducer 1 whose output indicates the deformation and a transducer 2 whose output indicates the applied load, a test being carried out between an initial time To and a time T m  when the load is a maximum, i.e. its rate of change is zero. The output from transducer 2 is fed via an operational amplifier 18 to a differentiator circuit 3 whose output is fed to a Schmitt trigger 4 and differentiator 5 which provide a pulse at T o  on the lower line and a pulse at T m  on the upper line. The time elapsing between T o  and T m  is determined by an integrator 9, memory circuit 10 and indicator 11. The value of the load at time T m  is determined by a memory circuit 8 fed with the signal from 2 and operated by a T m  pulse from 5. The amount of deformation is determined by two memory circuits 6, 7, fed, via an operational amplifier 17, from transducer 1 and operated at times T o  and T m  respectively by signals from 5. An indicator 13 indicates the difference between their outputs. A switch 19 resets the circuits 6, 7, 8, and 10 after a test. The rotor 20 is controlled by a speed regulator 16 fed by a difference signal obtained by comparing the actual deformation signal derived from transducer 1 with a reference signal from 14 which signal has a ramp wave form  representative of desired deformation at any instant. A manual controller 15 is provided, and this may be fed with a signal from circuit 5 to stop the motor automatically at the end of a test. The transducers 1 and 2 may be of the Piezoelectric, differential transformer, or extensometric strain gauge type.
Patent GB-284028-A (GB)
Title: Means for obviating surge and air bubbles in liquid measuring and delivering devices
IPC: B67D7/16
Filed: 1926-10-26
Abstract: 284,028. Smith, H. W., Smith, R. V., and Smith, I. C. V. Oct. 26, 1926. Air-trapping and removing.-In apparatus in which liquid is raised by a pump from a storage tank to a measuring- chamber, means are provided between the measuring-chamber and the source of supply for continually removing air from the liquid during charging of the chamber in order to prevent surging and formation of air bubbles. An auxiliary chamber 5 is arranged between the storage tank and the measuring-chamber 1, the pipe 6 from the tank reaching nearly to the top of the chamber 5. The supply pipe 3 to the measuring- chamber reaches nearly to the bottom of the chamber 5. The liquid is raised by pumping air from the measuring-chamber 1 through the pipe 13. Any air in the liquid tends to collect at the top of the chamber 6 and is removed therefrom through a small bore pipe 7 connected to the top of the measuring chamber. In cases where the pipe 3 communicates with the chamber 1 through a multi-way cock 4, when the cock is suddenly closed fluid " hammer " takes place in the pipe 3 and liquid is forced up through the pipe 7 into the measuring-chamber. To obviate this, a chamber 8 is interposed in the pipe 7 and a pipe 10 leads from the chamber 8 through a non- return valve 11 back to supply. In a modification the pipe 9 has a non-return valve and dips into the chamber 8 reaching nearly to the bottom where it is not in alignment with the pipe 7. In this case the liquid entering the chamber 8 due to " hammer " action is retained there during the emptying of the chamber 1, but is sucked into the chamber during the next filling operation. Specification 234,857, [Class 106 (v), Measured quantities &c.], is referred to.
Patent GB-357750-A (GB)
Title: Improvements in and relating to atlases
IPC: G09B29/04
Filed: 1930-09-08
Abstract: 357,750. Maps. LORENTZ, R., 38, Kaiserdamm, Charlottenburg, Berlin. Sept. 8, 1930, No. 26801. Convention date, Sept. 21, 1929. [Class 146 (ii).] A map is divided up by horizontal and vertical lines and is bound in two series comprising the sections A1, A3, A5, B1, B3, B5, &c., and A2, A4, A6, B2, B4, B6, &c., respectively, the two series being connected together by their back covers so that each is capable of being folded so as to lie to the left or right of the other. As shown, the two series c, d are secured to back covers a, b which are connected together by a strip e so that the series can be folded in either direction. The covers a, b are extended beyond the backs and opposite edges of the series to form a stop for preventing doubling back of the opened sections, and a hand-grip respectively. Each section contains a duplicate strip at the top and bottom showing a part of the adjacent map and marks for indicating the continuation map are provided.
Patent GB-503486-A (GB)
Title: Improvements in or relating electrolytic condensers
IPC: H01G9/048
Filed: 1937-10-04
Abstract: 503,486. Electrolytic condensers. HUNT, Ltd., A. H. (Solar Manufacturing Corporation) Oct. 4, 1937, No. 26848. [Class 37] [Also in Groups XXII and XVII] Film-forming electrodes of ribbed form for electrolytic condensers are made by closing a strip 30 of metal, such as aluminium, into cylindrical shape, placing the strip around a template consisting of equidistant movable ribs arranged in a circle around an axis to which they are parallel, and deforming the cylinder by moving equidistantly-spaced radial pushers 40 between the ribs and contracting the ribs and pushers towards the axis. In Fig. 8, the template ribs are supported on arms 41 and the pushers are shown as interlinked by bars 42 to ensure common movement. The strip may be lapped at the join, or the meeting edges may be turned inward and welded or riveted. A terminal strip 22 is secured to the join and to a stud 23 passing through a rubber closure in the neck 10A of the casing 10. The stud is either tapered in two directions as shown or has a tapered upper part.' The electrode is prevented from touching the casing by a perforated insulating sleeve 20. A vent is provided by stretching a rubber diaphragm 13, perforated with needle punctures, across a dished cover 12. The bottom of the cover is extruded upward into the form of a cup 12A and.another cup-shaped member 14 is pressed into this extruded part, and protrudes below the level of the cover 12. The cover and cup are perforated at 15, 16. On a pressure developing within the container the annular part of the diaphragm is bulged upward, stretching the central punctured part so as to ensure the punctures opening through the perforations in the cup 14, and the release of the pressure.
Patent GB-334709-A (GB)
Title: Improved manufacture of barium carbonate
IPC: C01F11/18
Filed: 1929-09-05
Abstract: 334,709. Laporte, Ltd., B., Weber, I. E., and Slater, V. W. Sept. 5, 1929. Barium carbonate, substantially free from sulphur compounds, is prepared by the addition of barium sulphide, barium sulphydrate or other barium sulphur compound to a solution of carbon dioxide or barium bicarbonate, in such amount that there is always carbon dioxide or barium bicarbonate present. In an example of a discontinuous method, a 20 per cent solution of barium sulphide, and carbon dioxide is added alternately to a solution of carbon dioxide. According to a continuous method, carbon dioxide and barium sulphide are added simultaneously. The carbon dioxide is not necessarily pure, and flue gas may be used under pressure, if desired. The necessary conditions are observed by maintaining the pH value below 7. Hydrogen sulphide evolved may be burnt to sulphur or sulphur dioxide.
Patent GB-893273-A (GB)
Title: Improvements relating to articles comprising solid reaction products derived from organic isocyanates and the like
Inventor: HOGG WILFRID HENRY
IPC: C08G18/08
Filed: 1957-08-28
Abstract: A method of producing an article consisting in part of a solid reaction product derived from (a) an organic compound having at least two -NCX radicals in the molecule, where X represents in the case of each radical either an oxygen atom or a sulphur atom, and (b) an organic polyether or polythioether having a molecular weight (or at least an average molecular weight) within the range 300 to 10,000 and having in each of its molecules at least two hydroxyl, amino or other groupings reactive with compound "(a)", comprises preparing one or more dispersions in an aqueous medium of material that will yield the solid reaction product, bringing the dispersion(s) into association with the other constituents of the article in question and then allowing reaction of the material to yield the solid reaction product.  The dispersed material may be in the form of a prepolymer. The -NCX groups of compound "(a)" or of the prepolymer may be masked or blocked.  The polyether or polythioether can be used in admixture with a polyester.  In examples prepolymers are prepared from polypropylene glycol (M.W. 750) alone and with trimethylolpropane and toluene diisocyanate, in the presence of acid butyl phosphate, and in one case the product is reacted with phenol.  Portions of the syrups were poured into rapidly stirred sodium dioctyl sulphosuccinate and the dispersion passed through a homogenizer. The dispersion was mixed with (4) short fiber asbestos floc, sand and lead chromate pigment which was trowelled on to a flat surface and set hard; (5) natural rubber latex, to give a mixture which set hard at 70 DEG C.  Another portion of mixture was precipitated with ammonium sulphate and sulphur cured; (6) a similar procedure was carried out with a styrene-butadiene rubber latex; (7) a dispersion as used in (4) is mixed with natural rubber latex containing foaming and curing agents and the foam rubber obtained is cured.  The dispersions can also be used for coating metals or fabrics, or bonding hair and the crumb materials of Specification 869,624 to form upholstery components.  A body of foam rubber may be surfaced with a solid reaction product of components "(a)" and "(b)".ALSO:A prepolymer syrup obtained by reacting a polypropylene glycol and toluene-2 : 4- and 2 : 6-diisocyanates is heated with 20% of phenol and after cooling the product is dispersed, by rapid stirring, in a 2% solution of sodium dioctyl succinate at 0 DEG C. The dispersoin is then passed through a hand homogeniser.  Equal volumes of the disperison and of rubber latex containing foaming and curring agents are mixed and the mixture is converted to a foam and cured.  The use of the prepolymer dispersion in forming non-porous products is also described (see Group IV(a)). Specification 869,624 is referred to.
Patent GB-1430997-A (GB)
Title: Lubricating layer for photographic materials
IPC: G03C1/76
Filed: 1973-06-07
Abstract: 1430997 Lubricating layer for photographic materials CIBA GEIGY AG 18 June 1974  [7 June 1973] 27190/73 Headings G2C and G2X Photographic materials having a photobase carrying on at least one side a photographic layer and which may be unexposed photo-sensitive materials or exposed and processed photographs, are provided on at least one side with a topmost lubricating layer by coating with a mixture of pentaerythritol stearate and pentaerythritol acetate, e.g. from an organic solvent solution such as trichloroethane. In a photo-sensitive material the lubricating layer is usually applied to the non- sensitive side and may be coated over the antihalation'or antistatic layer and may be removed during processing. In processed materials, the layer may be applied over the image layer or layers. The layer reduces friction between the material and other surfaces, and the degree of lubrication may be adjusted by varying the proportion of acetate and stearate in the mixture.
Patent GB-865309-A (GB)
Title: A method for the production of citrates
IPC: C12P7/48
Filed: 1959-08-10
Abstract: Citrates are obtained from very impure citric acid solutions obtained during the fermentation of sugar-containing solutions with Aspergillus niger by concentrating the fermentation citric acid solution in vacuo to concentrations of 40-85% by weight of citric acid, the solution being neutralised with basic inorganic alkali metal compounds to the mono-, di- or tri-stage either before or after the concentration, crystallising the alkali metal citrate by stirring, standing or seeding, treating the mother liquor separated from the crystallised alkali metal citrate with 1 mol of calcium per mol of citric acid in the mother liquor, either in the form of calcium carbonate and/or hydroxide when the mother liquor has not been completely neutralised, or in the form of calcium chloride when it has been completely neutralised, until precipitation of a monoalkali metal calcium citrate, the precipitated salt being filtered off and converted to a solution of monoalkali metal citrate with the stoichiometric quantity of sulphuric acid.  Citric acid may be produced from the monoalkali metal citrate solution and/or from the crystallised alkali metal citrate, by percolation over ion-exchange resins, or in an electrodialytic cell.  Thus, in Example 1, crystalline monopotassium citrate is dissolved in monopotassium citrate solution and the resulting liquor passed over five cation exchange columns in series, the first two containing a sulphonated coal product and the rest a sulphonated polystyrol in the hydrogen form to give an aqueous citric acid solution.  In Example 3, crystalline disodium citrate is dissolved in water and the solution fed to the second chamber of a four-compartment electro-dialytic cell of which chambers are formed by successive arrangement of a stainless steel cathode, a permselective cation exchange membrane, an anion exchange membrane, a cation exchange membrane and a graphite anode; the first chamber contains about 2N NaOH, the second the above-mentioned citrate solution, through the third flows pure citric acid solution, while the fourth contains about 1N H2SO4; citric acid is recovered from the third compartment.
Patent GB-344869-A (GB)
Title: Improvements in or relating to wave-signalling systems
IPC: H04B1/16
Filed: 1929-09-09
Abstract: 344,869. Wireless signalling. ROBINSON, J., 76, Mill Way, Mill Hill, London. Sept. 9, 1929, Nos. 27408 and 30068. [Class 40 (v).] In a wave signalling system in which the receiver has such a high selectivity as to prevent interference removed from the carrier frequency by less than the highest modulation frequency of the wanted signal, means are provided to correct for the signal distortion due to the high selectivity of the receiver. The response of the resonant apparatus is preferably less than 25 per cent outside a frequency band of two kilocycles. The correction may be effected at the transmitter or in the low-frequency amplifier of the receiver. Fig. 1 shows the application to a receiver employing a crystal detector 14 in which selectivity is obtained by a piezo-electric crystal 11 and correction is effected by a transformer 15, 16 which has an output characteristic rising with frequency. Alternatively the selectivity may be obtained by cascaded tuned circuits or by a filter comprising a network of series acceptor circuits and shunt rejector circuits. Fig. 6 shows a receiver in which the selectivity is obtained by a multi-stage highfrequency amplifier and correction is effected by variable coupling impedances 48, 51. Fig. 7 shows the application to a supersonic heterodyne receiver in which selectivity is effected by a piezo-electric crystal 108 in the intermediate frequency stage. The piezo-electric crystal is neutralized for capacitative coupling by condenser 109, as described in Specification 337,049, [Class 40 (v), Wireless signalling &c.]. Fig. 10 shows a device for adapting existing receivers comprising a tuned circuit and a series piezo-electric crystal 74 to obtain selectivity and a shunt piezo-electric crystal 79 as a byepass for the correction of distortion. The device may be connected between the aerial earth system and the receiver. Correction of the distortion at the transmitter, Fig. 9 (not shown), may be effected by means of a piezo-electric crystal connected in shunt to a tuned circuit to byepass the carrier and closely adjacent frequencies. Specifications 222,150, 233,417, 282,445, 303,177, and 307,544, [all in Class 40 (v), Wireless signalling &c.], also are referred to. The first Provisional Specification states that the invention is applicable to frequency modulation systems and to systems in which the signal is first applied to a supersonic frequency which is utilized to modulate the carrier. The second Provisional Specification describes an arrangement in which a thermionic valve circuit is used and selectivity is obtained by the use of reaction; the device for adjusting reaction may be coupled to the device for correcting distortion; a super-regenerative system may be combined with piezo-electric crystals to extend the tuning range of the receiver; it is stated that the spacing of transmitting stations may be reduced to as little as 100 cycles.
Patent GB-485830-A (GB)
Title: Artificial marble slab
IPC: C04B28/16
Filed: 1937-10-08
Abstract: An artificial marble slab is made of white plaster of Paris, Keene's cement, sawdust, dilute acetic acid and any desired mineral colour which is reinforced with pieces of scrim and cast on to a glass surface.  Eyelet holes may be provided in the slab.
Patent GB-762188-A (GB)
Title: Improvements relating to domestic boilers
IPC: F24H9/12
Filed: 1953-10-06
Abstract: 762,188. Pipe joints. WEARING, W. Jan. 3, 1955 [Oct. 6, 1953], No. 27451/53. Class 99(1) [Also in Group XIII] An adaptor, by means of which a water pipe is fixed in the side of a hot water boiler (see Group XIII), comprises a member 12 held in place on the inside of the' boiler by means of a clamping ring 13 on the outside of the boiler, and a doublythreaded pipe holder 24 screwed into the common screw-thread of the members 12 and 13. The outer face of the adaptor is protected from the heat of the fire surrounding the closed end of the pipe 2 by copper rings such as that shown at 33a. Water from the boiler circulating in the annular recess 32 prevents the adaptor from becoming overheated.
Patent GB-914492-A (GB)
Title: Improvements in electric lamp standards
IPC: F21V21/32
Filed: 1959-08-12
Abstract: 914,492. Supporting electric lamps. TOORELL A.B., BERNHARD. Aug. 12, 1959 [Aug. 13, 1958], No. 27554/59. Class 75 (3). A support for an electric lamp holder consists of a tube 1 of relatively flexible plastics material, e.g. polyethylene, reinforced by a relatively stiff wire 8 of such cross-section that it leaves space in the tube for conducting wires 6 but substantially fills the remainder of the tube. The reinforcing wire 8 may be in the form of an H as shown, conducting wires 6 in insulating sheaths 11 substantially filling the grooves on each side of the cross-piece 10. A reinforcing wire of semicircular cross-section may be used, leaving space for the conducting wires in the remaining half of the tube 1.