baber/WOPTO huggingface dataset:
Patent GB-730457-A (GB)
Title: Improvements in and relating to adjustable reference voltage units
IPC: H02P7/26
Filed: 1953-10-06
Abstract: 730,457. Condenser arrangements. GENERAL ELECTRIC CO. Oct. 6, 1953 [Oct. 10, 1952], No. 27428/53. Class 38 (4). A device for furnishing an output voltage representative of an adjustable D.C. input voltage, derived' from a potentiometer 5, comprises a condenser 6, across which the output voltage appears, connected across the input voltage through a rectifier bridge 8-11 and resistors 12, 12a, so that whilst the condenser normally assumes the same voltage as the input voltage the rate of change of output voltage in response to a sudden change of input voltage is limited and determined by the resistors 12, 12a. A constant source of potential, which may be unidirectional or, as shown, alternating (injected by transformer 7) is also effective in charging and discharging circuits of the condenser so that the rate of change of output voltage-for small incremental movements. of the potentiometer slider is substantially independent of the position of the slider. The output circuit may be isolated from the condenser by a cathode follower 21. To improve the linearity of the output voltage-time characteristic of the circuit, the constant voltage source terminal 19 may be connected to the output terminal 13 instead of to the slider of the potentiometer. An auxiliary valve, shunting a portion of the cathode load resistor of the cathode-follower through a further resistor connecting the anode of the valve and the transformer terminal 19 to the output terminal 13, may be provided to correct for non-linearity introduced by the cathode-follower.
Patent GB-1077158-A (GB)
Title: Improvements in or relating to fish traps
IPC: A01K69/08
Filed: 1965-06-29
Abstract: 1,077,158. Fish traps. W. M. WATSON. June 10, 1966 [June 29, 1965], No. 27436/65. Heading A1A. A minnow trap comprises a perforated cylinder having a detachable cap 9 and a conical inlet 11 and is formed from a transparent synthetic plastics material.
Patent GB-274611-A (GB)
IPC: C09K23/00
Abstract: 274,611. British Dyestuffs Corporation, Ltd., Baddiley, J., and Chapman, E. June 3, 1926. Cleansing-compositions.-Wetting-out or emulsifying agents are obtained by sulphonating a mineral oil fraction and condensing the product with an alcohol, or by condensing a mineral oil fraction with an alcohol and sulphonating the product. According to one example, a petroleum fraction obtained by extracting Borneo petroleum with liquid sulphur dioxide is first sulphonated and then heated with a mixture of isopropyl alcohol and sulphuric acid; instead of isopropyl alcohol there may be used n-propyl alcohol, isobutyl alcohol, cyclohexanol, or benzyl alcohol. After separation of insoluble oil, the product is isolated by liming out and and conversion into the sodium salt. In another example, the same petroleum fraction is mixed with isopropyl alcohol and the mixture is heated with sulphuric acid. After separation of insoluble oil, the product is isolated as described above. The products are suitable for use in the treatment of textile fibres or finished textiles with liquids, for example in the de-greasing of wool. The Provisional Specification states that the products may be used in the preparation of detergent emulsions, such as emulsions of oils and solvents, for textiles and leather.
Patent GB-324379-A (GB)
Title: Improvements in or relating to cigarette making machinery
IPC: A24C5/28
Filed: 1928-09-25
Abstract: 324,379. Molins, W. E. Sept. 25, 1928. Cigarette - making machines.-In a cutting-off mechanism for a machine of the continuous -rod type, the cutting edge of the blade is kept at right angles to the axis of the cigarette rod, although the surface of the blade varies in inclination during its rotation. The shaft is secured against axial movement and carries the blade 12 on twin arms 3 connected by bridge pieces 5. A shaft 8 of adjustable inclination terminates in a fork 7 engaged by pins projecting from the bridge pieces 5. Emery wheels 15 are arranged adjacent to the path of the blade 12. Specification 248,415 is referred to.
Patent GB-1201545-A (GB)
Title: Method for preparing hexachlorophene
Inventor: MICHAELS EDWIN BERNARD
IPC: C07C37/20
Filed: 1968-06-10
Abstract: 1,201,545. Preparation of hexachlorophene. E. B. MICHAELS. 10 June, 1968 [8 June, 1967; 6 Feb., 1968], No. 275l4/68. Heading C2C. The invention relates to a method for preparing bis-(3,5,6-trichloro-2-hydroxyphenyl) methane (hexachlorophene) which comprises the steps of admixing 1 part, by weight, of 2,4,5- trichlorophenol in from 0À25 to less than 1 part, by weight, of an organic medium selected from formic acid, acetic acid, acetic anhydride, propionic acid and mixtures of the same, condensing the latter, 2,4,5-trichlorophenol mixture with from 0À08 to 0À09 parts, by weight, of a formaldehyde-yielding material or formaldehyde in the presence of from 1 to 2 parts of an acid-condensing agent at a temperature ranging from about 80‹ to 120‹ C., and recovering hexachlorophene. In an example, 2,4,5-trichlorophenol in acetic acid is heated to 95‹ C. and 98% sulphuric acid added to which paraformaldehyde is gradually added whilst maintaining the temperature at 90‹ to 100‹ C. and hexachlorophene subsequently recovered. The di-sodium salt may be obtained by heating with sodium carbonate and sodium hydroxide and a mono-sodium salt by adding sulphuric acid to reduce the pH to 10.
Patent GB-1002595-A (GB)
Title: Improvements in agricultural implements for harvesting root crops
IPC: A01D17/00
Filed: 1962-07-18
Abstract: 1,002,595. Screening apparatus. LORD BRUCE, A. D. A. THOMAS, and J. STRUTHERS. July 12, 1963 [July 18, 1962 ; Dec. 17, 1962], Nos. 27569/62 and 47448/62. Heading B2H. [Also in Division A1] A potato-harvester (see also Division A1) comprises a sole-plate 15 to cut below a drill of potatoes, an openwork elevator 16 behind the sole plate to raise the drill and deliver it to an openwork conveyer 27 which is driven in the opposite direction to the elevator, and means 28, 29, 30, for delivering a blast of air on to the potatoes during delivery on to the conveyer so that they tend to roll contrary to its direction of travel, while haulms and earth either pass through the conveyer or are discharged over its forward end. As shown, the conveyer 27 consists of three separate aligned conveyers A, B, C, the centre one B running in the opposite direction to its neighbours. The conveyers A, B, are inclined downwardly in the direction of travel of the potatoes and the final conveyer C is inclined upwardly. A gap exists between the second and third conveyers which is jumped by the potatoes, other matter being discharged on to a transverse conveyer 35. The potatoes from the conveyer C are delivered on to a final elevator 36. The various conveyers. and the fan 30 are driven from the towing tractor by a jointed shaft 19.
Patent GB-835235-A (GB)
Title: Improvements in or relating to floor washing machines
IPC: A47L11/293
Filed: 1955-09-28
Abstract: 835,235. Floor washing machines. GRIFFITHS, J. S. Sept. 26, 1956 [Sept. 28, 1955], No. 27577/55. Class 138 (1). A floor washing machine comprises an endless travelling mop 28 and one or more brushes 41 ; wherein the mop is led successively through a tank 11 of water; between squeeze rollers 32, 33 ; into contact with a floor ; and between wringing rollers 29, 30 to express dirty liquid prior to re-entering the tank 11 ; and wherein the brushes move in contact with the floor. Two tanks 11, 12 are provided for clean and dirty water respectively ; and a third tank 48 containing detergent is detachably mounted in front of tank 12 and feeds detergent through an outlet 51 to the brushes. Tank 11 has a valved connection 54 leading to a transverse spray pipe 55 ; and a hose 56 is provided for emptying tank 12. The mop, the rotary brushes, and the front wheels 15 are driven by an electric motor 52 through belt and bevel gear connections. In the Provisional Specification, the electric motor is mounted on the machine handle and the drive is transferred to the front wheel axle via the wringing rollers. The centre brush is driven through bevel gears by this axle, and the edges of the outer brushes frictionally engage the edge of the centre brush and are rotated thereby.
Patent GB-1062519-A (GB)
Title: Improvements in or relating to devices for the intermittent advance of data carriers
IPC: G06K13/30
Filed: 1965-06-30
Abstract: 1,062,519. Tape feed arrangements. SIEMENS & HALSKE A.G. June 30, 1965 [July 1, 1964], No. 27637/65. Heading G5R. An arrangement for step feeding a data carrier tape 2 to e.g. a perforator 17 comprises a pair of electromagnetically operated brakes 8, 11, and a rotatable cam-shaped member 1 which in one position of rotation forms a loop in the tape and in its opposite position allows the loop to be drawn out by drive means 14. When the member is in its loop-forming position brake 9 on the tape supply side of the arrangement is de-energized and brake 12 is energized and when the member is in its opposite position the brakes are oppositely energized and electromagnet 16 is energized to move the roller 15 and hence the tape into driving engagement with the driven roller 14. One side of the depression in the tape path into which the cam member moves the tape when forming a loop, may be moved vertically up or down to vary the length of the loop formed.
Patent GB-1063057-A (GB)
Title: A shutter and an optical system embodying same
IPC: G03B9/08
Filed: 1964-07-03
Abstract: 1,063,057. Photo-electric centrifuge monitoring. R.S. ALM. July 3, 1964 [July 6, 1963], No. 27640/64. Heading G1A. [Also in Division G2] A diaphragm is provided with an arcuate s@t aperture 2 having one of its longitudinal borders defined by a stack of independently movable flat elements 3, this diaphragm being used in conjunction with a rotatable diaphragm having a radial slit 11 in order to determine the distribution of a liquid in a centrifuge 12 rotating with the second diaphragm. A beam of light is passed through the moving aperture defined by the two diaphragms and then through the centrifuge to a photo-cell and oscilloscope. When the centrifuge is empty, any irregularities in the light permeability of the vessel are compensated for by moving the elements 3 into or out of the light path along the length of the slit 2 so as to produce a zero reading on the oscilloscope over the whole height of the centrifuge.
Patent GB-447177-A (GB)
Title: Mounting for the exchangeable fixation of precious stones
IPC: A44C17/02
Filed: 1935-10-07
Abstract: 447,177. Jewellery. GEMINN, J., (trading as GEMINN, J., [Firm of]), 56, Wasserstrasse, Oberstein, Nahe, Germany. Oct. 7, 1935, No. 27653. Convention date, Aug. 26. [Class 43] Stones are interchangeably mounted in articles of jewellery (e.g. a ring c) by means of a cup shaped frame b which holds the stone a, and fits in a similarly shaped frame d secured to the ring. Tongues f on the frame b are bent over the stone, and claws g are bent outwards and downwards to engage in grooves i formed in the frame d. Spring catches may replace the claws g and grooves i.
Patent GB-277277-A (GB)
Abstract: 277,277. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). March 10, 1926. Cleansing-compositions; lubricants. - In the production of aqueous solutions or emulsions of solvents or other liquids or solids insoluble in water, for instance of hydrocarbons, waxes, or oils, for instance those for use as cleaning compositions or as lubricants, there is substituted for the soap hitherto used as emulsifying agent, a sulphonic acid of a polynuclear aromatic hydrocarbon, or a salt thereof, which is substituted in the nucleus by an amyl, hexyl, or higher alkyl group. In examples :- (1) the use of the sodium salt of amylated naphthalene sulphonic acid is described, its admixture with 50 per cent by weight of American petroleum jelly resembling a soft soap and having a very high washing power; and its admixture with other liquids insoluble in water giving readily emulsifyable products which may be used as boring or spinning oils; (2) the use of hexylated naphthalene sulphonic acid is referred to.
Patent GB-1437347-A (GB)
Title: Device for removing one piece of material from a stack of pieces
IPC: B65H5/08
Filed: 1972-06-14
Abstract: 1437347 Feeding sheets MARINE ENG CO (STOCKPORT) Ltd 6 June 1973 [14 June 1972] 27755/72 Heading B8R A plate 29 forms part of a horizontal cylinder 12 which is urged rightwardly by a coil spring 10. The plate is moved downwards by a piston 32, and the top sheet of a pile 114 is formed into a rippled configuration because of air blown from a jet 106, whereafter air admitted to a bore 102 in a piston 14 in the cylinder 12 forces the latter to the left, and a flange 24 comprises the spring 10 so that parts of the sheet are nipped between the coils of the spring, to assist adherence to the plate 29, which is then raised by a spring 38 when air is cut off from the inlet 70 of the cylinder 30 in which the piston 32 slides.
Patent GB-1075765-A (GB)
Title: Improvements in and relating to the moulding of articles
IPC: B29C49/44
Filed: 1964-07-06
Abstract: 1,075,765. Bag-moulding. P. DESCHAMPS. July 6, 1964 [July 4, 1963], No. 27772/64. Heading B5A. Hollow articles are made by lining a two-part mould 1, 2 with moulding material R, in excess of the amount required, and inflating a bag 4 obturated by a piston 8 via inlet 5, the effect of inflation being to drive the piston out of the mould together with the excess material and air occluded therein, the bag thereafter being closed at end 6 so that it may remain inflated until the moulding material has set. The piston 8 may be solid or distensible and in the latter case an article having a varying cross-section may be produced. Piston rod 9 may be actuated to accelerate its movement out of the mould or retarded by means such as a friction brake or a pneumatic dashpot. The moulding material mentioned is synthetic resin, in particular synthetic resin reinforced with a fabric, e.g. of glass fibre, and the articles may be tubular or open on one side, Fig. 3 (not shown), ships' masts and booms being specifically mentioned.
Patent GB-534864-A (GB)
Title: Improvements in aeroplanes
IPC: B64C23/00
Filed: 1939-10-13
Abstract: 534,864. Aeroplanes with adjustable propellers. DAVID, V. M. Oct. 13, 1939, No. 27806. [Class 4] An aeroplane has engines and direct-coupled propellers tiltable about a transverse axis within the leading edges of the wings, shutters in the upper and lower surfaces of the wings being simultaneously tilted to permit passage of the slip-stream. The engines and propellers are mounted on casings 7 with hemispherical rear ends working in gaps at the leading edge of the wing and are tiltable by a transverse shaft 5 extending through the fuselage. A quadrant 16, Fig. 3, upon the shaft 5 is engaged by a rack 17 actuated by a fluid pressure jack 19 controlled by valve 24 to effect the tilting of the propellers. A quadrant 14 is provided in each casing gearing with a pinion 13 on a counter-shaft 12, this shaft having band brakes 30 controlled by cables 39 leading to a pedal 41. Movement of the pedal 41 to release the brakes also opens a valve 21 to render pressure fluid available for the jack 19. An alternative manual means of tilting the propellers comprises a hand-crank 53 and worm gear 51, 50 coupled to the shaft 12 by a clutch controlled by a cable 61 and a pedal 60. A brake 77 is provided on the shaft 5 and is controlled by a hand lever 80. Hinged shutters 71 are provided in the upper and lower surfaces of the planes and are geared to the shaft 12 so as to remain parallel with the propeller shafts.
Patent GB-992138-A (GB)
Title: Improvements in or relating to filters
IPC: B01D33/00
Filed: 1962-07-20
Abstract: 992,138. Rotary filters. UCB (UNION CHIMIQUE - CHEMISCHE BEDRIJVEN) S.A., and PRODUITS CHIMIQUES PECHINEY-SAINT-GOBAIN S.A. July 20, 1962 [July 24, 1961], No. 28026/62. Heading B1D. A flat filter rotatable about a vertical axis comprises an annular screen and an endless peripheral flexible rim upstanding therefrom, the screen being provided, after removal of filter cake, with a subsequent clearing and cleaning zone, defined by a sector between two radial barriers and the edge of the sector, the portion of the endless rim opposite the sector being held away from the screen periphery, and the clearing and cleaning zone being provided with a filter-washing device located above the screen, and means for admitting compressed air below the screen. The endless rim may be made of e.g. natural or synthetic rubber. The invention provides a method of clearing and cleaning a filter cloth of a horizontal rotating table filter wherein a portion of the filter cloth or other filter medium is brought within a clearing and cleaning zone on the table as defined above and subjected therein to the action of compressed air and a washing liquid. The table is divided into sectors, each forming a box with bottom, side walls and a perforated top. In the course of one revolution, each sector is successively filled with liquid to be filtered e.g. under vacuum, and then passes to washing zones where the cake is washed, then beneath scraper blades or worms for removal of solids, and then to a clearing zone wherein the washing liquid and compressed air remove remaining particles of solids before recommencement of the cycle. In one embodiment, Fig. 1, flexible rim 3 engages in fluid-tight manner with edge 2 of rotating table I provided with apertures 5, covered by cloth 4. The flexible rim 3 projects upwardly to a height at least equal to the depth of liquid to be filtered. Between points 6 and 6<SP>1</SP>, the rim 3 is held away from edge 2 by rollers 7, 7<SP>1</SP>, 8 and 8<SP>1</SP>, so that zone B, for clearing and cleaning the cloth, is defined by external edge 2, internal rim 13, and radial barriers 9 and 9<SP>1</SP>. Each barrier is composed of one or more flexible scraper blades 10, Fig. 3, mounted on adjustable support 11 connected to the fixed superstructure of the filter. Zone B is provided with washing liquid device 12 fed through connection 14, and is also subjected to the action of compressed air passing through the cloth from bottom to top, end fed by a distributer underneath the table. Zone B may be located after the filter cake removal device and before the liquid feed device. Thus since the table 1 has no outer rim in the cleaning zone, efficient cleaning of the cloth is facilitated, since washing liquor containing suspended particles can overflow the edge of the table. The area of the clearing and cleaning zone may vary according to the nature of the material to be filtered. The filter is used for processing the slurry obtained when decomposing phosphate rock with sulphuric acid.
Patent GB-298775-A (GB)
Title: Manufacture of derivatives of pyrazolanthrone
IPC: C07D231/54
Filed: 1927-10-21
Abstract: 298,775. Imray, 0. Y., (I. G. Farbenindustrie Akt.-Ges.). Oct. 21, 1927. Pyrazolanthrone derivatives are produced by interaction of pyrazolanthrone, or substitution derivatives thereof, with nuclear halogenated aromatic compounds, which may be of the benzene, naphthalene or anthracene series, in the presence or absence of a diluent, a catalyst or an acid-binding agent. Halogenated benzene or benzanthrone, nitrohalogenbenzenes or naphthalenes and o-halogencarboxylic acids of the benzene, naphthalene, or anthracene series are specified as suitable halogenated organic compounds. According to examples, (1) pyrazolanthrone and biombenzene are condensed by refluxing with nitrobenzene, in the presence of anhydrous potassium acetate and a copper salt; the N-phenylpyrazolanthrone is worked up by diluting with alcohol, filtering and washing; (2) pyrazolanthrone and o-brom- or chlor-benzoic acid are condensed by boiling them in amyl alcohol in the presence of copper and potassium acetates and copper powder; (3) the potassium salt of pyrazolanthrone is prepared by heating pyrazolanthrone in nitrobenzene with potassium carbonate; Bz-1-Brombenzanthrone or nitrated Bz 1-brombenzanthrone. (see Specification 254,742) is then coupled with the potassium salt; the nitrobenzanthronylpyrazolanthrone may be reduced to the corresponding amino compound; (4) alpha-anthraquinonylpyrazolanthrone, which is a dyestuff dyeing cotton faint yellowish tints from an alkaline hydrosulphite vat is obtained by coupling pyrazolanthrone and a-chloranthraquinone; (5) 2 mols. of pyrazolanthrone are condensed with 1 mol. of 1 : 5-dichlor-2 : 4-dinitrobenzene, the former replacing the two chlorine atoms of the latter. The following pairs of components are similarly condensed : pyrazolanthrone and 2-chlor-3-naphthoic acid, a-bromnaphthalene or o-chlornitrobenzene: potassium pyrazolanthrone and Bz 1- chlor-Bz 2 - phenylbenzanthrone or 2-chlorbenzanthrone; pyrazolanthrone or 4-methylpyrazolanthrone and Bz 1-brombenzanthrone: and 1 : 5- dipyrazolanthrone (1 mol.) and Bz 1-brombenzanthrone, (2 mols.) or o-chlorbenzoic acid (2 mols.). Vanadium salts are specified as catalysts that may be used for the condensations, and pressure may be used. Specification 285,555 also is referred to. Bz 1-chlor-Bz 2-phenylbenzanthrone is obtained by substituting the amino group for hydroxyl in Bz 1-oxy-Bz 2-phenylbenzantbrone (see example 16 of Specification 268,830) diazotizing and replacing the diazo group by chlorine by the Sandmeyer method.
Patent GB-246620-A (GB)
Title: Improvements in, and relating to, the moulding and casting of metal bodies
IPC: B22C9/24
Filed: 1924-11-25
Abstract: 246,620. Downing, J. F. Nov. 25, 1924. Moulds.-In casting hollow metal articles such as gulley-boxes the core d is vented by means of holes c in a base plate a over which is located an interstitial mass p contained in a rigid member m. The mass p may consist of shavings or straw enclosed in a sack o and the member m may comprise a perforated ring. The base plate a may be of iron or steel to chill the edge of the casting. Guiding moulds.-The base plate may be provided with holes f for aligning a mould box i and other holes (not shown) for aligning a pattern.
Patent GB-1398015-A (GB)
Title: Water-insoluble monoazo dyestuffs and process for  heir preparation
IPC: C08J3/20
Filed: 1972-06-16
Abstract: 1398015 Water-insoluble monoazo dyes HOECHST AG 16 June 1972 [18 June 1971] 28311/72 Heading C4P Novel water-insoluble monoazo dyes of formula where R is H or C 1 -C 4  alkyl; and X is H, halogen, methyl or methoxy are prepared by diazotizing an appropriate 5-amino-isophthalic acid monomethyl ester amide and coupling it with an appropriate 5-acetoacetylamino-benzimidazolone. Coupling may be effected in the presence of a surface active agent and possibly in the presence of a carrier such as heavy spar and may be carried out in water and/or an organic solvent such as glacial acetic acid, alcohol, dioxan, THF, formamide, DMF, DMSO or pyridine. The coupling mixture may advantageously be heated for a period of time, e.g. boiled or held under pressure at above 100‹C. optionally with the addition of a solvent -such as ethanol, ortho-dichlorobenzene or DMF or a resin soap and the product dyestuffs may be after treated with a solvent such as those referred to or chloro- or nitro-benzene or may be ground with auxiliaries. The pigments are suitable for the preparation of printing pastes, colour lakes and disperse coating colours-and for dyeing caoutchouc, plastic materials and natural or synthetic resins and for printing paper and textile materials. They may also be used for dyeing rayon from cellulose ethers or esters, polyamides, polyurethanes, polyglycol terephthalates or polyacrylonitrile. Yellow shades are obtained.