baber/WOPTO huggingface dataset:
Patent GB-663760-A (GB)
Title: Improvements in weighing device
IPC: G01G13/02
Filed: 1948-07-29
Abstract: 663,760. Automatic weighing machines. MERCK & CO., Inc. July 29, 1948. [Aug. 1, 1947] No. 20225/48. Class 40 (i). [Also in Groups XXXVI, XL (b) and XL (c)] A weighing machine gives an instantaneous indication of weight and/or controls the feed of material to the balance so that a predetermined quantity is weighed out before the balance has settled, dependent on the displacement of the balance beam from the neutral position, and its acceleration. The specification shows mathematically that this is substantially correct when the weight is small compared with the mass of the balance system. A vane 1 attached to the beam 2 of a laboratory balance moves between a light source 3 and a photo-cell 4 so that the cell output is proportional to the displacement of the beam from its neutral (steady) position. The cell is connected to a cathode-follower 6 feeding a two channel amplifier (see Group XL (c)) which gives an output comprising the sum of the input and its second differential i.e. displacement plus acceleration. This output may operate an indicator, as shown, or be used in suitable proportions to control two A.C. energised thyratrons so that they cease to fire consecutively thereby reducing and finally cutting of the supply to an electromagnetic vibrofeeder supplying material to the balance Fig. 2 (not shown). It is stated that the device will automatically weigh out 100 + 1m.g. in 5 or 6 seconds on a balance having a natural period of 8 secs. The Specification also states that a voltage proportional to the displacement may be generated by use of change in capacitance, inductance or mutual inductance and the acceleration may be obtained from the first differential of a velocity component generated by relative movement of a magnet and coil.
Patent GB-1342401-A (GB)
Title: Fluid systems
IPC: B67D7/32
Filed: 1971-04-19
Abstract: 1342401 Leak detector for pressure pipes ENEL ENTE NAZIONALE PER L'ENERGIA ELETTRICA DIREZIONE STUDI E RICERCHE 19 April 1971 [26 Jan 19701 20291/71 Heading G4H Apparatus for detection of leaks of a pressure fluid from a pipe comprises at least 3 pressure transducers spaced at points A, B, C along the pipe at respective distances such that the period #T of a longitudinal wave to travel between A and B is equal to that between B and C, the outputs thereof being converted into digital signals and taken to a combination of delay devices and an adder to produce a value of an algebraic function of the 3 outputs and time, the value of this causing a warning signal to be given if it rises above a threshold value. The function is: where H A -H C  are pressures at A-C respectively at the bracketed times. This function value is approx. zero in normal conditions. Readings are made at intervals and the values of #H added over time #T and this value stored and compared with the value for the next period #T.
Patent GB-620055-A (GB)
Title: Improvements in or relating to electrically bi-refringent solid materials
IPC: H01B3/44
Filed: 1946-07-08
Abstract: An organic glass to constitute a solid dielectric in a Kerr cell is produced by mixing a polymerizable unsaturated liquid with a liquid of high electrical birefringence and subjecting the mixture to a polymerization process to produce solidification. The polymerized substance is preferably a member of the polystyrol family and a suitable birefringent liquid is nitrobenzene or nitrotoluene.
Patent GB-673984-A (GB)
Title: Improvements in and relating to babies' diapers
Inventor: GOLDHILL LIONEL JOHN
IPC: A41B13/04
Filed: 1949-08-05
Abstract: 673,984. Babies diapers. SHELLER, Ltd., A. Nov. 2, 1950 [Aug. 5, 1949], No. 20410/49. Class 141. A baby's diaper comprises a support 1, Figs. 1, 2, of flexible synthetic resin material, e.g. polyvinyl chloride, having end pockets 3 into and between which can be removably inserted an absorbent pad 9, e.g. multi-layered, unsized softened paper. Over each pocket 3 is sewn a covering strip 4 of linen forming at its ends tabs 5, 6, loops 7 being provided on the tabs 5 and adapted to be engaged by the tabs 6 which are secured together by a button or as shown in Fig. 2, by tapes 8. The arrangement is such that the synthetic resin support 1 is kept out of contact with the baby's body by the pad 9 and the linen covering strips 4. Elastic is provided around the edges of the support 1.
Patent GB-1141048-A (GB)
Title: Improvements in inhibit circuits
IPC: H03K19/086
Filed: 1966-05-09
Abstract: 1,141,048. Transistor inhibit circuits. INTERNATIONAL BUSINESS MACHINES CORP. 9 May, 1966 [27 May, 1965], No. 20414/66. Heading H3T. A semi-conductor device producing a constant voltage drop is connected between the emitters of a first and second transistor such that a signal at the base of the first so raises the potential at the emitter of the second that the second transistor is not made conductive by a signal at its base. As shown transistor 14 is always saturated, its current flowing either to its collector or to its base, and accordingly it produces a constant voltage difference between the emitters of transistors 22 and 12. The "up" voltage at input 28 therefore prevents transistor 12 being rendered conducting by the "up" voltage at 26. Further transistors such as 22 may be provided also to prevent conduction of transistor 12 and an output signal may be derived from the collector of 22.
Patent GB-1353352-A (GB)
Title: Process for the production of spontaneously cross-linkable powder  lacquer binders
IPC: C08F20/58
Filed: 1971-04-19
Abstract: 1353352 Spontaneously cross-linkable polymer powders BAYER AG 19 April 1971 [7 Feb 1970] 20433/71 Heading C3P A solvent-free spontaneously cross-linkable polymer powder is obtained by removing the solvent from an anhydrous solution comprising an organic solvent and a spontaneously cross-linkable copolymer of (a) an N-hydroxymethyl and/or N-alkoxymethyl amide of an α,#-olefinically unsaturated carboxylic acid having 3-5 carbon atoms and (b) at least one copolymerizable monoolefinically unsaturated monomer, in a flash evaporator at a temperature of up to 200‹ C.; and size-reducing the solventfree residue to a particle size of from 20 to 120 Á. The copolymer solution may optionally also contain a pigment (e.g. titanium dioxide), plasticizer, levelling agent, filler and/or other additive. The flash evaporator may be a screw evaporator (used as described in Specification 1,353,351) or a falling-film evaporator. Component (a) of the copolymer is suitably derived from acrylic or methacrylic acid. In examples the copolymer is formed from (i) styrene, nbutyl acrylate, methyl acrylate, N-methoxymethylacrylamide and acrylamide and (ii) styrene, n-butyl acrylate, N-methoxymethylacrylamide, ethyl acrylate, acrylamide and acrylic acid, and the copolymer solution is prepared by copolymerizing the monomers in anhydrous n-butanol in the presence of tbutyl peroctoate and t-dodecyl mercaptan. The copolymer powder can be electrostatically sprayed on to, for example, iron plates and the coating stoved at 175‹ C.
Patent GB-260954-A (GB)
Title: Improvements in valveless pumps
IPC: F04B7/06
Filed: 1926-08-19
Abstract: 260,954. Buaas Mejerimaskinfabrikker Afdeling af Aktieselskabet Frederiksberg Metalvarefabrik. Nov. 6, 1925, [Convention date]. Pumps with reciprocating and oscillating piston. - In a valveless pump having a reciprocating and oscillating piston 9 controlling inlet and delivery ports 8, 7 in the cylinder wall, the piston is divided into four vertical chambers 10 - - 13, of which the chambers 10 - - 12 are open at the top and closed at the bottom, while the chamber 13 is closed at the top and open at the bottom. During the upstroke of the piston, one of the chambers 10 - - 12 is open to the delivery port 7, and the chamber 13 is open to the inlet port 8. At the end of the stroke, the piston has been rotated to bring the chamber 13 into register with the port 7 and one of the chambers 10 - - 12 into register with the port 8. During the downstroke, the liquid below the piston is delivered, and fresh liquid enters the space above the piston from the port 8. In another form, the piston is divided into six chambers, of which three are open at the top and closed at the bottom, while three are closed at the top and open at the bottom. In another form, the piston is divided by a transverse partition with three chambers above and three below. The above arrangement of chambers is designed to equalise the pressure of the whole periphery of the piston.
Patent GB-402882-A (GB)
Title: A process for the production of benzoic acid and benzoates
IPC: C07C51/16
Filed: 1932-07-20
Abstract: Pure caustic soda is obtained by concentrating the lye from the oxidation of toluene with crude sodium bichromate or chromate obtained by the alkaline decomposition of chromium ores, the impurities having remained in the precipitated chromic oxide.  The oxidising agent, sodium bichromate, may be regenerated by oxidation of the above-mentioned chromic oxide precipitate with crude chromate or caustic alkali and air, in presence of carbon dioxide or carbonates, if desired.ALSO:Benzoic acid and benzoates are produced by the oxidation of toluene in aqueous phase at temperatures about 100 DEG  and under pressure with crude alkali or alkaline earth (including magnesium) salts of chromic acid obtained by the alkaline decomposition of chromium alloys, ores and other chromium-containing substances without subjection to a purification process, or with crude bichromates obtained from the above chromates or ores, the proportions being then equimolecular.  The impurities in the chromate frits do not affect the reaction.  The sodium benzoate obtained is separated by precipitation.  The oxidising agent may be recovered by treatment with oxygen and alkali or crude chromate under pressure in presence of carbon dioxide or carbonates if desired.  Chromate and dichromate are formed, impurities such as lime, magnesia and alumina remaining as insoluble residue.  The alkaline reacting substances formed during the oxidation of the toluene may be neutralised by carbon dioxide, bicarbonate, salts of magnesium or aluminium, e.g. the sulphates, and salts of the heavy metals with the exception of those referred to in Specification 402,529.  According to examples, toluene is treated with an aqueous extract of crude sodium chromate obtained by alkaline oxidising decomposition of chromium ore under pressure, and the sodium benzoate crystallised out and purified, and the oxidising agent regenerated as described above, or (2) with crude bichromate, obtained as described above, or (3) with chromate or bichromate in presence of carbon dioxide, or (4) with alkali chromate or bichromate in presence of magnesium, aluminium sulphates or a heavy metal salt, or (5) with magnesium chromate or bichromate, followed by precipitation and purification as above. Pure caustic soda may be obtained by concentrating the lye produced in the process of oxidation.
Patent GB-348948-A (GB)
Title: Improvements in and relating to a pin ticket
IPC: G09F3/12
Filed: 1930-07-07
Abstract: 348,948. Tickets. CROAD, A. K., 70, Chancery Lane, London.-(Kimball Co., A. ; 307, West Broadway, New York, U.S.A.) July 7, 1930, No. 20554. [Class 73.] A pin ticket has the ends 3 of the securing staple 2 covered with some non-corrodible material, such as tin, to present rounded surfaces.
Patent GB-647031-A (GB)
Title: Improvements in operating mechanism for collapsible vehicle heads
Inventor: COWARD CHARLES FRAND
IPC: B60J7/12
Filed: 1948-08-06
Abstract: 647,031. Folding hoods for vehicles. HALLAM, SLEIGH & CHESTON, Ltd. Aug. 6, 1948, Nos. 20761 and 24865. [Class 108(i)] The operating means for a vehicle hood comprises a cant rail member 6 and a hinged pillar member 1 together with link 7 and lever 3 to support the cant rail 6 from the pillar 1, and links 11, 16, and lever 14, the arrangement being such that the movement of the cant rail member 6 relatively to the upright 1 is delayed during the collapsing movement of the head and permits the cant rail 6 being fully extended in relation to the pillar 1 during the unfolding of the head before the latter reaches its final position. Other embodiments are described.
Patent GB-1008919-A (GB)
Title: Fluorinated bisalkylketenes and their preparation
IPC: C07C51/00
Filed: 1964-05-20
Abstract: The invention comprises bis-(perfluoroalkyl) ketenes wherein each perfluoroalkyl group contains up to 8 carbon atoms, and their production by pyrolysing a corresponding a ,a -diperfluoroalkylacetic acid at 150 DEG -500 DEG  C. in the presence of a strong dehydrating agent such as P2O5. The starting acids may be prepared by hydrolysing a 2,2-bis-(perfluoroalkyl)-1,1-di-fluoroethylene with water or aqueous acid, e.g. in tetrahydrofuran, or by converting the substituted ethylene into a 2,2-bis-(perfluoroalkyl)-1,1-difluoro ether by reaction with a suitable alcohol, followed by reaction with ClSO3H and finally hydrolysis.  In an example, perfluoroisobutene is reacted with methanol to give a mixture of (CF3)2CHCF2OCH3 and (CF3)2 C = CF.OCH3 as well as (CF3)2CHCOOH; the latter when heated with P2O5 gave (CF3)2C = CO.  Other acids and ketenes are specified.  The products of the invention are waterproofing agents (see Division D1).ALSO:Shaped cellulosic objects such as paper and fabric are rendered water-repellent by treatment with a bis (perfluoroalkyl) ketene in which each perfluoroalkyl group contains up to 8 carbon atoms (see Division C2).  An example treats paper and cotton fabric with gaseous (cF3)2C = CO.
Patent GB-635192-A (GB)
Title: Improvements in gyroscopic apparatus
IPC: G01C21/18
Filed: 1943-12-13
Abstract: 635,192. Gyroscopic apparatus. BRAMBLE, A. E. C. Y. Dec. 13, 1943, No. 20799. [Class 97 (iii)] To prevent gimbal lock the gimbals 12, 14 supporting a gyro rotor 10 are carried in a chassis member 15 pivotally mounted on the vehicle and normally held by a roller 2 7 engaging a recess 22 in a sloping cam track 25. When the gimbals 12, 14 approach a coplanar position, automatic admission of pressure fluid to a cylinder 21 raises the roller and frees the chassis and simultaneously applies a pad 23 to a brake wheel 24 to lock the outer gimbal 14 to the chassis member 15. On release, the roller 27 runs down the sloping track 25 and re-enters the recess 22. Specifications 553,730 and 635,210, [Group XXIX], are referred to.
Patent GB-1340011-A (GB)
Title: Chairs
IPC: A47C3/12
Filed: 1971-04-19
Abstract: 1340011 Chairs GROSFILLEX SARL 19 April 1971 [11 Feb 1970] 20841/71 Headings A4H and A4J A chair comprises a base frame 1 and a combined seat and back member 2 detachably secured thereto, the member 2 being formed from a flat plastics layer (4) Fig. 2 (not shown) consisting of panels 6 radiating from an offset central area (5) and separated laterally by slots 7, the layer (4) being curved into hemispherical form and mounted on the base frame 1 by clips 9 on the underside of the panels 6 resiliently engaging over a circular support number 3 of the frame 1. The panels 6 have ribs 12 to conceal the clips 9. Frame 1 may be rigid and formed from steel tubes or rods, or it may be foldable into flat form. The central area (5) of the layer (4) may be perforated. Reference has been directed by the Comptroller to Specification 914905.
Patent GB-149197-A (GB)
Title: Improvements in and relating to an antenna for wireless telegraphy
IPC: H01Q1/00
Filed: 1920-07-12
Abstract: 149,197. Huth Ges., Dr. E. F., and Rosenbaum, B. July 14, 1915, [Convention date]. No Patent granted (Sealing fee not paid). Aerials.-The aerial is formed on two or more parts, each possessing a natural period of oscillation, but the resultant natural oscillation of the combined aerial lies outside the range of transmitted or received waves. The aerial may be constructed for example of different lengths of wire which have different periods of oscillation. One part of the antenna may be tuned to the waves to be received or transmitted, whereas atmospherics cause the aerial to oscillate as a whole. The Specification as open to inspection under Sect. 91 (3) (a) describes an aerial which is made aperiodic in the case of a low aerial by suitable relation of capacity, self-induction and resistance, and in the case of a high aerial by largely increasing its capacity and resistance in relation to its self-induction. The radiating resistance of the aerial may be used as a damping resistance. This subject-matter does not appear in the Specification as accepted.
Patent GB-210063-A (GB)
Abstract: 210,063. General Motors Research Corporation, (Assignees of Williams, H. M., and Boegehold, A. L.). Jan. 19, 1923, [Convention date]. Metal bodies, porous; metals, powdered, obtaining coherent masses from. - Porous alloy materials, particularly suitable for use in bearings, are produced by mixing suitable proportions of finelydivided alloy able metals, compressing the mixture to the desired form under high pressure, and heating the formed article in the presence of a suitable volatile flux, such as ammonium chloride, to a temperature below that required for fusion, to cause the metallic constituents to alloy. The flux, which assists the alloying action, may be added, in a finely-divided state, to the mixture before compression, the heating taking place in a suitable non-oxidizing atmosphere, a suitable composition of mixture being copper 90 parts,. tin 10 parts, salicylic acid 6 parts, and ammonium chloride 53 parts. Alternatively, the heating may be carried out in an atmosphere of the vapour of the flux. Finely-divided graphite or mica, talc, or other inert unctuous material is also added to the mixture. Specification 230,896 is referred to.
Patent GB-941123-A (GB)
Title: Improvements in or relating to dry shavers
IPC: B26B19/30
Filed: 1961-06-12
Abstract: 941,123. Dry shavers. M. YOSHIDA. June 12, 1961, No. 21194/61. Heading B4B. A dry shaver comprises an apertured tube 8 freely rotatable around a stationary cylindrical blade support 3 which is releasably held in a holder frame 1 detachably mounted in a casing 11, the support having an axially-extending channel 4 and a groove 5, parallel to the channel and in which an L-section blade is positioned with its single edge projecting over the channel. The tube is guided by collars 7 on the support 3, the ends of the support being of reduced diameter and received and held in apertures 2 in the resilient limbs of the U-shape holder frame 1. The support is prevented from rotating by the engagement of stops 9<SP>1</SP> on the holder in a slot 9 in the support but can be rotated, e.g. by a screwdriver, to bring the slot 5 into register with a channel 10 for replacement of the blade in an axial direction. Cut hair collects in the channel 4 and the tube 8 is made of hard metal so that the cutting edge of the blade is honed on the return stroke. In a modification, shown in Fig. 7, the holder frame is shortened and has supporting legs 12 received in vertical bores 13 in the casing 11.
Patent GB-679782-A (GB)
Title: Manufacture of azo-dyestuffs
IPC: C09B62/82
Filed: 1950-08-28
Abstract: Compounds of the general formula <FORM:0679782/IV (b)/1> (wherein X1, X2, X3 and X4 represent alkyl hydrocarbon radicals, or, in not more than three cases, hydrogen atoms, and together have the constitution CnH2n+4, where n is a whole number not higher than 10, and particularly wherein X1=X3=H and X2=X4=an alkyl hydrocarbon radical of at most 5 carbon atoms) are prepared by condensing 1 mol. of a cyanuric halide (e.g. chloride) with 1 mol. of 1-amino-7-naphthol and with 2 mols. of a primary or secondary aliphatic amine containing at most 5 carbon atoms (e.g. ethylamine, methylamine or n-butylamine), or with 1 mol. each of two different non-tertiary aliphatic amines together containing at most 10 carbon atoms, or with 1 mol. of a primary or secondary aliphatic amine containing at most 10 carbon atoms and 1 mol. of ammonia.  The condensations are advantageously carried out in an aqueous medium in the presence of an acid-binding agent and with the cyanuric halide in a very finely divided form. Specification 209,723, [Class 2 (iii)], is referred to.ALSO:The invention comprises the manufacture of monoazo dyestuffs by coupling a diazotized o-aminophenolmonosulphonic acid (which may contain a further substituent not capable of salt formation) with a compound of the general formula <FORM:0679782/IV (c)/1> (wherein X1, X2, X3 and X4 represent alkyl hydrocarbon radicals, or, in not more than three cases, hydrogen atoms, and together have the constitution CnH2n+4, where n is a whole number not higher than 10); the dyestuffs so obtainable; the use thereof for dyeing and printing; and material dyed or printed therewith.  Coupling is preferably effected in an alkaline medium, advantageously with the addition of pyridine or especially ethanol.  The dyestuffs may be treated with agents yielding metal (e.g. chromium) in substance, in the dyebath or on the fibre, and are suitable for dyeing wool by the after-chroming or the single bath chroming process.  Preferred coupling components are those in which X1=X3=H and X2=X4= an alkyl hydrocarbon radical of at most 5 carbon atoms, e.g. methyl, ethyl or n-butyl.  Examples describe the use of these three coupling components, and, as diazo components, 4-nitro-and 4-chloro-2-aminophenol-6-sulphonic acid. In further examples, wool is dyed green with the dyestuff 4-nitro-2-aminophenol-6-sulphonic acid --> the coupling component in which X1=X3=H and X2=X4=C2H5 by the after-chroming process and by the metachrome process.  A list of additional diazo components is given. Specification 209,723, [Class 2 (iii)], is referred to.
Patent GB-1275026-A (GB)
Title: Improvements in deflector apparatus
IPC: B65G47/71
Filed: 1971-04-19
Abstract: 1275026 Feeding articles to shoots SCHWEIZERISCHE INDUSTRIE - GESELLSCHAFT 19 April 1971 [26 Feb 1970] 21392/71 Heading B8S Articles 7, Fig. 3, such as biscuits, which are sliding down a transversely inclined shoot 1 continue to move down the shoot 1 unless they are deflected through a hole 6 in the base of the shoot 1 on to a shoot 9 by a pivoted deflector 13. In a second embodiment, Fig. 5, the articles 27 may be deflected from a shoot 21 to a shoot 29 by a pivoted member 33. The absence of an upper side wall on the shoot from which the articles are deflected prevents the articles being damaged by becoming trapped between the deflector and the wall.
Patent GB-960246-A (GB)
Title: Process for the production of 2-nitro-4-fluobenzoic and 4-nitro-2-fluobenzoic acids
IPC: C07C205/58
Filed: 1960-06-17
Abstract: 2-Nitro-4-fluobenzoic and 4-nitro-2-fluobenzoic acids are obtained by oxidising the corresponding nitrofluo-toluenes with aqueous nitric acid at elevated temperature and, if required, elevated pressure.  In a modification of the process the nitric acid is wholly or partially replaced by a mixture of nitric oxide and nitrogen peroxide.  The nitrofluobenzoic acids may be reduced with iron sulphate and ammonia to the corresponding amino fluobenzoic acids.