baber/WOPTO huggingface dataset:
Patent GB-485980-A (GB)
Title: Improvements in or relating to a display device
IPC: G03B21/06
Filed: 1937-10-13
Abstract: 485,980. Lantern-slides. TRANSART AKTIEBOLAG. Oct. 13, 1937, No. 27785. Convention date, Oct. 13, 1936. [Class 98 (ii)] In a method of episcopic projection, a number of image sheets 1, each having a thickness of between 025 and 1À2 millimetres and bearing opaque images, are illuminated for common projection. The sheets 1 may consist of transparent cellulose products and may be spaced apart by interleaved fixed transparent sheets 5. Strips 6 may be provided to space sheets 5 to reduce the pressure on sheets 1. Each sheet 1 may be moved along the casing 3 by a strip 4 connected thereto. A glass plate may be placed on top of the casing to hold the sheets in position. The sheets may be metallized to conduct away any static electricity generated. One side of the casing is provided with an image window and at least the upper sheets have one blank portion each. The images of other sheets can then be shown therethrough without interference.
Patent GB-429917-A (GB)
Title: Improvements in or relating to devices for preventing accumulation of dust in corners of rooms and other places
IPC: E04F19/04
Filed: 1933-10-09
Abstract: 429,917. Dust - shields for corners. CUSTANCE, H. G., and SMITH, F. C., Meadowcourt Road, Blackheath, London. Oct. 9, 1933, No. 27809. [Class 20 (ii)] A dust - shield for corners consists of a triangular-shaped plate A of resilient material, inwardly curved on its outer face and with substantially straight edges so that when pressed into a corner the plate is slightly deformed and on release the edges engage with the surfaces forming the corner to retain it in position. The curvature of the front face may not be continued to the edges and the edges may be sharpened. The device may be formed of thin metal or of non- metallic mouldable material. According to the Provisional Specification, the edges may also be serrated.
Patent GB-616773-A (GB)
Title: Percolator for preparing coffee or like infusions
IPC: A47J31/30
Filed: 1946-09-17
Abstract: 616,773. Infusing-machines. SOC. ANON. FRATELLI BIALETTI. Sept. 17, 1946. No. 27834. Convention date, Feb. 19. [Class 129] An infusing-machine comprises a boiler having a conduit leading from the bottom cast integrally with the boiler and continuing integrally as a lateral projection which supports a detachable infuser. Water from the boiler 1 passes by way of conduits 2 and 3 and a filter 4 to an infuser 6 carrying a further filter 5. The infuser is removably attached to the laterally extending member 31 by means of a bayonet-pin connection 12. The infusion is received by a pot 10 supported by a bracket 9.
Patent GB-843021-A (GB)
Title: Improvements relating to thrust bearings, face seals or the like
Inventor: HARROP RAYMOND NEILL
IPC: F16C17/06
Filed: 1957-09-03
Abstract: 843,021. Thrust bearings. NAPIER & SON Ltd., D. Aug. 28, 1958 [Sept. 3, 1957], No. 27838/57. Class 12 (1). [Also in Group XXVI] A thrust bearing for a shaft 10 having a shoulder 14, comprises a housing 11 recessed to take an annular thrust plate 13 around which the shoulder 14 bears. On the front face of the thrust plate are a series of circumferentially-spaced pads or steps 32 separated by radial grooves 30 and a circumferentiallyextending groove 28 around the peripheral edge of each pad. The groove 28 is joined with each of the adjacent radial grooves by a shallow circumferential channel 25 so as to form a complete annular groove of varying depth. Oil fed to the radial grooves by the holes 29 is thus carried by the annular groove to each radial groove, surplus oil being carried away by the metering passages 33. A helical labyrinth seal 16 is provided either on the shaft or the housing with the direction of the helix being such, in relation to the direction of rotation of the shaft, that oil tending to leak past the seal is forced back to the thrust bearing.
Patent GB-892871-A (GB)
Title: Improvements in tape driving systems
IPC: G11B15/295
Filed: 1960-08-11
Abstract: 892,871. Feeding magnetic tapes. AMPEX CORPORATION. Aug. 11, 1960 [Aug. 13, 1959], No. 27870/60. Class 40 (2). To prevent snatch when engaging pinchrollers 18, Fig. 1 (not shown) with a tapedrive capstan 14, the pinch-rollers may only be engaged when the tape and capstan peripheral speeds are substantially equal. Photo-electric tachometers 33, 38, 39 and 37, 41, 42 are attached to the capstan flywheel and to a roller 16 driven by the tape, respectively, and multivibrator, differentiator and rectifier means provide opposing direct currents proportional to the tachometer output frequencies, any substantial out-of-balance current being fed to solenoid means over-riding the pinch-roller engagement means. Details are given of a suitable transistorized circuit (Fig. 4, not shown).
Patent GB-1294254-A (GB)
Title: Improvements in or relating to belt-driven components
Inventor: BELCHER GEOFFREY
IPC: F04D29/28
Filed: 1971-06-15
Abstract: 1294254 Making centrifugal fans JAMES CHRISTIE & SONS Ltd 15 June 1971 27911/71 Heading B3A [Also in Divisions F1 and F2]  A combined fabricated pulley and fan unit, for a motor-vehicle alternator, is constructed from two annular sheet-metal discs 1, 2, each formed as a pulley cheek, the latter disc 2 additionally being formed with fan blades 4, 5, the discs 1, 2 being spot-welded at 8, (12), (Fig. 3, not shown) to a flange 11 of a centre mounting boss 3 the bore 13 of which may be plain, as shown, or formed with a keyway.
Patent GB-189943-A (GB)
Title: Improvements in guards for cropping machines used in the treatment of woven and like fabrics
IPC: D06C13/00
Filed: 1922-07-14
Abstract: 189,943. Wood, A., and Henshilwood, A. B. July 14, 1922. Interconnecting guard with starting-gear.-In guards for cropping-machines, a sliding grid a is pulled down in front of the cutter c by links e, e<1> connected to the arms f, f<1> of counterweighted ball-crank levers, the ether arms g, g' of which are coupled by a rod h having an extension connected to a starting-lever h. The lever k may actuate a clutch' or, as shown, a belt-fork. The arm of a treadle k<2> passes horizontally through an L-slot in a locking-lever p, so that when the lever k is moved to put the belt on a fast pulley s or to engage a clutch, the lever p falls by gravity and locks it and the guard a. Depression of a pedal p<2> frees the lever k .and allows a spring m to move it to disconnect the driving-means.
Patent GB-625691-A (GB)
Title: A process for treating seeds, bulbs and tubers
Filed: 1946-09-18
Abstract: Seeds, bulbs and tubers are treated by applying a carrier coating, particularly preserved rubber latex, containing protective or fertilizing substances, particularly as described in Specifications 448,849 and 492,596, or substances for imparting or altering colour, or colour and smell, of plants, particularly as described in Specification 479,332, and then applying a protective coating of an alginate or an alginate combined with one or more than one other coating material to act as a substantially insoluble sheath surrounding the carrier coating. This protective coating material may comprise a mixture of alginate and soft soap which has been treated with a 3-5 per cent solution of caustic soda or caustic potash, preferably for one hour at 80 DEG C.  The protective coating may also contain substances such as a double phosphate of a metal and ammonium to give it insecticidal or fertilizing properties.
Patent GB-519547-A (GB)
Title: Process for the manufacture of light and porous materials from natural cellulose fibres and cement or mortar
IPC: C04B28/02
Filed: 1938-09-26
Abstract: 519,547. Fibrous compositions. HANDL, R., and WAGNER, W. F. Sept. 26, 1938, No. 28000. Convention date, Sept. 25, 1937. [Class 70] Porous compositions consist of natural cellulose fibres such as wood shavings, sawdust, straw &c. impregnated with aluminium sulphate solution and mortar or cement. Milk of lime may be added and the product then moulded.
Patent GB-249581-A (GB)
Title: Improvements in or relating to door knockers
IPC: H01H13/14
Filed: 1924-11-22
Abstract: 249,581. Klausmann, J. Nov. 22, 1924. Knockers.-Contacts c, d in the circuit of a bell l and/or lamp k, the contact c being carried by an insulating disc a on a sliding rod b passing through a door x, are normally held apart by the weight of the knocker z but on raising the knocker a flat spring i causes the contacts to close. The rod b passes through a metal guide g which may have a pin engaging with a slot in the disc a. Reference has been directed by the Comptroller to Specification 20992/90.
Patent GB-375161-A (GB)
Title: Improvements in the manufacture of vegetable gum solutions
IPC: C09F1/02
Filed: 1931-10-09
Abstract: Colourless solutions free from foreign matter of gums which are insoluble in and merely swell in cold water, such as tragacanth, karaya and gums from Shiraz, are made by converting the gum to a gel by soaking in cold water, filtering, for example through an 80-100 mesh wire cloth at a pressure of 1000 pounds per square inch, and then dissolving in water by heating, with or without addition of agents such as hydrogen peroxide.
Patent GB-792326-A (GB)
Title: Mechanism for producing oscillating or rotary motion from continuous rotary motion
IPC: F16H21/40
Filed: 1955-10-04
Abstract: 792,326. Washing-machines. HOUNSELL, J. O. Oct. 4, 1956 [Oct. 4, 1955], No. 28193/55. Class 138 (2). [Also in Group XXIV] A linkage for oscillating the tub of a washing machine, comprises an eccentric pin 11 on a driving disc 6 which engages in a slot 13 of a bar 15 which is pivotally connected at one end to a pin 16 on a coaxial driven member 5. A fixed but adjustable fulcrum pin 19 also engages in the slot 13 of bar 15 and is carried by a pivoted arm 20. Thus, on rotation of driving disc 6 through worm gearing 8, 9 the pin 11 oscillates the bar 15 about the fulcrum 19 which imparts an oscillatory movement to the driven member 5 which drives the tub spindle 3 through a gear 4. The amplitude of the oscillation inparted depends on the position of the fulcrum pin 19, being a minimum when it is furthest from the common axis of the members 6, 5 and a maximum as it approaches the circle of rotation of the driving pin 11. When the fulcrum pin 19- coincides with this circle the linkage will be locked and no drive can be transmitted. When the fulcrum pin 19 is inside this circle a continuous but cyclically varying rotation is transmitted from member 6 to member 5 except when the pin 19 is on the common axis of rotation when the rotation will be uniform.
Patent GB-468946-A (GB)
Title: Production of multi-colour photographic pictures
IPC: G03C7/327
Filed: 1935-10-12
Abstract: 4 : 4<1> - di(1 - hydroxy - 2 - naphthoylamino)-diphenyl is prepared by condensing 1 : 2-hydroxynaphthoyl chloride with benzidine; 4 : 4<1> - di(1 - hydroxy - 2 - naphthoylamino)-stilbene by condensing 1 : 2-hydroxynaphthoic acid chloride with 4 : 4<1>-diaminostilbene; di(benzoylacetic acid) benzidide by boiling benzoylacetic acid ester and benzidine in xylene and distilling off the alcohol produced; 2 : 3 - hydroxynaphthoyl - para - aminobenzoylacetanilide by reacting p-nitrobenzoylacetic acid ester with aniline, reducing the product and condensing with 2 : 3-hydroxynaphthoic acid; di - (1 - hydroxy - 2 - naphthoyl - para - aminobenzoyl - para - aminophenyl) - urea by condensing di-(p-aminophenyl)urea with p-nitrobenzoyl chloride, reducing the product and condensing with 1 - hydroxy - 2 - naphthoyl chloride; 1-hydroxy-2-naphthoyl-J-acid by condensing 1-hydroxy-2-naphthoylchloride with J-acid; 2 - (4<1> - m - hydroxy - benzoyl - aminophenyl) - 6 - methylbenzthiazole by condensing dehydrothiotoluidine with m - hydroxybenzoylchloride; di - (1 - hydroxy - 2 - naphthoyl) - dianisidide by condensing 1 - hydroxy - 2 - naphthoyl chloride with dianisidine; 4 : 4<1> - di(1 - hydroxy - 2 - naphthoylamino) - 3 : 3<1> - dichlorodiphenyl by condensing 1 - hydroxy - 2 - naphthoyl chloride with 3 : 3<1> - dichlorobenzidine; 4:4<1>-di(1-hydroxy-2-naphthoylamino)-diphenyl-3 : 3<1> - dicarboxylic acid by condensing 1 - hydroxy - 2 - naphthoyl chloride with benzidine - 3 - 3<1> - dicarboxylic acid; 4 : 4<1> - di - (m - hydroxyphenylaminocarboyl) - diphenyl by condensing m - aminophenol with diphenyl - 4 : 4<1> - dicarboxylic acid chloride; diphenyl - 4 : 4<1> - di(carboyl - 1 - p - aminophenyl - 3 - methyl - 5 - pyrazolone) by condensing diphenyl - 4 : 4<1> - dicarboxylic acid chloride with 1-p-aminophenyl - 3 - methyl - 5 - pyrazolone in presence of pyridine; di - (benzoylacetic acid) - benzidide : 3 : 3<1> - dicarboxylic acid by reacting benzoylacetic acid ester with benzidine-3 : 3<1>-dicarboxylic acid ester and saponifying the product.
Patent GB-190311-A (GB)
Title: Improvements relating to the emptying of liquids from containers having comparatively small outlets
IPC: B67D3/04
Filed: 1922-01-17
Abstract: 190,311. Meadowcroft, J. Jan. 17, 1922. Discharge devices.-A combined nozzle and vent tube for discharging carboys, bottles &c., is clipped on to the neck of the vessel by a pair of spring-actuated clips 12, 14 pivoted at 15 to a thickened part of the nozzle.
Patent GB-1041340-A (GB)
Title: An improved packaging and display device
IPC: B65D75/28
Filed: 1965-07-05
Abstract: 1,041,340. Display boxes; packaging. K. HENFREY. July 5, 1965, No. 28453/65. Headings B8C and B8P. [Also in Division G5] Base 14 (Fig. 1) attached to the lower edges 1 la of sides 11 of a cover 10 of a display device, is curved so that its centre portion is raised above the level of the edges 11a. An article is inserted by moving the sides 11 apart, thereby increasing the gap between the cover and base, and is clamped in position when the sides are allowed to return to their original position. In the preferred form, the lower edges 11a of the moulded, transparent cover are bent back to form slots into which the base 14 (Fig. 3, not shown) is inserted. The article, e.g. a model car, may be held in position by tabs 16 cut out of the base and positioned between the front and rear axles of the car. The cover 10 may have an inverted V-shaped cross-section, or the sides 11 may be connected through a yoke portion 12 which may be curved or flat. Alternatively, this yoke may be formed from a separate strip of material with the sides 11 fitted into it. The base 14 may be of an inverted V-shape in crosssection and may be formed from a sheet of flexible synthetic resinous material or metal. Alternatively, the base 14 may be formed by extending the lower ends 1 la of the side members in arcuate form. The device may be open-ended, or the ends may be closed by closure members, conforming to the shape of the ends, which may be mounted on a strip of material and clipped on to the cover.
Patent GB-673459-A (GB)
Title: New or improved multilayer light-sensitive photographic elements
IPC: G03C7/30
Filed: 1950-11-22
Abstract: 673,459. Multilayer colour photographic element. KODAK, Ltd. Nov. 22, 1950 [Nov. 23, 1949], No. 28534/50. Class 98 (ii). A support as of cellulose ester, synthetic resin or paper has a blue sensitive silver halide emulsion layer adjacent thereto, and red and green sensitized silver halide layers in either order superimposed on the blue sensitive layer, and there is present in a non-light sensitive layer over the latter, or in one or both of the red and green sensitized layers, a coloured material which absorbs red or green light or both, the emulsion layers not containing image forming coloured material. The blue sensitive layer is last to be hit by exposing light and therefore usually requires a higher blue light speed than an outermost blue sensitive layer, and the coloured material present in the element is to reduce light scattering in the highly sensitive innermost blue layer by red and green light reaching it after passing through the upper layers. Action of blue light on the upper layers is minimized by using emulsions principally of silver chloride therein; or by exposing the entire film through a yellow filter which does not absorb all the blue light to which the innermost layer is sensitive. Processing is to the usual subtractive colours, and couplers may be present in the emulsion layers. The coloured material in the element may be dye or pigment and may be blue, cyan, magenta or red. On top of a blue sensitive silver bromide emulsion on the support there may be (a) green sensitized silver chloride emulsion containing a blue dye and then red sensitized silver chloride emulsion; (b) red sensitized silver chloride emulsion containing red dye with superimposed green sensitized silver chloride emulsion; (c) blue interlayer and uncoloured red and green sensitized chloride emulsions. The aluminium lake of aurin tricarboxylic acid may be used as green light absorbing material and Prussian Blue or related iron blues or dyes as described in Specifications 506,385, 606,141, 654,266, 658,560 as red light absorbing material. The coloured materials are usually removed in processing but in camera films where this is not essential a dispersion of copper phthalocyanine in gelatin may be used. Specifications 283,765, 321,998, [both in Class 98 (ii)], and 541,589 also are referred to.
Patent GB-787291-A (GB)
Title: Improvements relating to the production of phosphate coatings on metals
IPC: C23G5/06
Filed: 1955-10-07
Abstract: A metal surface is simultaneously cleaned and phosphated by means of an emulsion of a greaseremoving solvent in an aqueous acidic solution of a coating-metal phosphate, the solvent being emulsified with a non-ionic, surface-active hydrophobic polyoxyethylene condensate. Preferably the condensate contains less than 50 per cent ethylene oxide by weight, and is a polyoxypropylene polyoxyethylene condensate or an alkyl aryl polyoxyethylene ethanol.  The grease-removing solvent may be kerosene, tetrahydronaphthalene, methyl cyclohexanone, ethyl benzoate or o-dichlorobenzene.  The emulsion may contain a mutual solvent for the polyoxyethylene condensate and the greaseremoving solvent, e.g. ethylene glycol monoalkyl ether, diacetone alcohol, toluene, isopropanol, butanol, and octyl alcohol. The phosphate solution may contain one or more phosphates of zinc, manganese, aluminium, cadmium, calcium and iron, as well as phosphoric acid and accelerators such as chlorates, nitrites, nitrates, iodates, hydrogen peroxide, sodium metanitrobenzene sulphonates, picric acid, hydroxylamine, copper fluoroborate and nickel ions.  Metal surfaces which may be treated include iron, steel, zinc and aluminium.ALSO:A metal surface is simultaneously cleaned and phosphated by means of an emulsion of a grease-removing solvent in an aqueous acidic solution of a coating-metal phosphate, the solvent being emulsified with a non-ionic, surface-active, hydrophobic polyoxyethylene condensate.  Preferably, the condensate contains less than 50 per cent ethylene oxide by weight, and is a polyoxypropylene polyoxyethylene condensate or an alkyl aryl polyoxyethylene ethanol.  The grease-removing solvent may be kerosene, tetrahydronaphthalene, methyl cyclohexanone, ethyl benzoate or o-dichlorobenzene.  The emulsion should contain a mutual solvent for the polyoxyethylene condensate and the grease-removing solvent when the latter is an aliphatic hydrocarbon.  The preferred mutual solvent is an ethylene glycol monoalkyl ether; other mutual solvents are diacetone alcohol, toluene, isopropanol, butanol, and octyl alcohol.  The phosphate solution may contain one or more phosphates of zinc, manganese, aluminium, cadmium, calcium and iron, as well as phosphoric acid and accelerators such as chlorates, nitrites, nitrates, iodates, hydrogen peroxide, sodium metanitrobenzene sulphonates, citric p  acid, hydroxylamine, copper fluoroborate and nickel ions.  Metal surfaces which may be treated include iron, steel, zinc and aluminium.  It is stated that phosphate coatings produced in this way facilitate the subsequent working, e.g. drawing, of the metal, and are suitable, after treatment with chromic acid, for receiving a final coating of paint.
Patent GB-1142824-A (GB)
Title: Amplifier circuits
Inventor: BABBS RICHARD SYDNEY
IPC: H03F3/45
Filed: 1967-06-21
Abstract: 1,142,824. Battery testing. MULLARD Ltd. Jan.22, 1968 [June 21, 1967], No.28667/67. Heading G1U. [Also in Division H3] The state of charge of a battery 1 Fig. 1 is monitored by means of a stabilized differential amplifier 9 (see Division H3) connected across a resistor 4 in series with the charge and discharge path of the battery. A coulometer 10 as amplifier load integrates the battery current and gives,an indication of the state of charge. The coulometer may consist of a glass capillary tube containing two columns of mercury separated by an aqueous electrolyte gap, the position of the latter showing the integrated current through the resistor 4. The system may be used in battery-driven vehicles and is also applicable to measuring the life of primary batteries.
Patent GB-631554-A (GB)
Title: Improvements in or relating to helical extrusion apparatus for filling materials into formed receptacles
IPC: B65B3/08
Filed: 1947-10-27
Abstract: 631,554. Filling powdered &c. materials in formed receptacles. JACKSON & CROCKATT, Ltd., J. G., and GAIR, D. Oct. 27, 1947, No. 28700. [Class 94(i)] In apparatus for filling powdered and plastic materials into formed receptacles, of the kind in which a rotatable helical extruder is movable endwise relative to a delivery orifice into the receptacle to be filled, receding from within the receptacle as filling proceeds, by its action on the filling material, pivoted lever and weight mechanism is adapted to act on the extruder to urge it towards or away from the bottom of the receptacle, the weight or weights being adjustable relative to the pivot in order to vary the resistance of the extruder to expulsion from the receptacle. The extruder 14 is in communication with a hopper 10 which is provided with agitating mechanism (not shown) driven by belts 12, 13 from a motor 11. The extruder spindle 16 is driven from the motor 11 by a belt drive (not shown) to a pulley 19. A clutch 18 positioned between the pulley and spindle 16 has endwise-extending jaws 21 engageable with rollers 22 which extend radially from the spindle 16. The extruder is maintained in its inoperative position by a catch 27 carried by an arm 23 pivoted at 24, which is engageable with a collar 28 rigid with the spindle 16. The catch 27 may be withdrawn against the action of a biasing weight 34 by means of a lever 29 connected by linkage 30, 31 with the arm 23. An extension of the arm 23 carries a presser member 25 adapted to engage a ball bearing mounted in the end of the spindle 16 so that as the lever 29 is operated to release the catch 27 the presser 25 bears on the spindle 16 to force the extruder through a delivery orifice 15. An arm 35 pivoted at 36, engages the spindle 16 through a ball bearing mounting 37 and has extensions 38, 39 which are adapted to carry a sliding weight 40. The travel of the extruder is adjustably limited by the action of a stop 45a which engages a stop 45 carried by the projection 44 of an arm 41 adjustable in position by a screw mechanism 42, 43. Operation: A container 32 is held against the face of the orifice 15 and the motor 11 is switched on at 46. The catch 27 is released and the extruder projected through the orifice by operation of the lever 29. The rollers 22 are thus brought into engagement with the clutch jaws 21 so that the extruder commences to rotate and feed material from the hopper to the container 32. The density of the material in the container is dependent on the weight of the extruder assembly and is adjusted by positioning the weight or weights 40 on the arm 38 and/or 39. The extruder stops rotating when the rollers 22 recede from the jaws 21 and the weight 34 eventually re-engages the catch 27 automatically.