baber/WOPTO huggingface dataset:
Patent GB-176599-A (GB)
Title: Improvements in art lithography
IPC: B41C1/10
Filed: 1921-01-26
Abstract: 176,599. Aurich, E., and Wolf, F. Jan. 26,1921. Printing-surfaces; printing light colours on dark grounds.-Designs in the form of a light colour on a dark ground are printed lithographically from a stone or grained metal surface on which the design is drawn in a rapid-drying grease-resisting ink. The design is drawn in reverse, and the whole of the stone or design is coated with a greasy printing-ink which resists and repels water. The whole is then treated with a solution of phosphoric acid in gum, gummed, and washed with turpentine, which removes the greasy ink from the design, and thins it on the background. Finally, by rubbing with water, the ink is removed from all parts of the design. The final print gives a light design on a dark ground. The design is preferably drawn in an ink formed of 1oz. of water, ¢oz. of a solution of 1oz. of phosphoric acid in 16oz. of gum, ¢oz. of lamp-black water-colour, ¢oz. of lamp-black, “oz. of oxalic acid, and 3 drops of glycerine, and the greasy printing ink is preferably formed of 1oz. of asphalt diluted in turpentine, 1oz. of turpentine, ¢oz. of black printing-ink, and #oz. of ether.
Patent GB-681653-A (GB)
Title: Improvements in azo dye
Filed: 1951-02-12
Abstract: 2-Naphthol-6-sulphonamide is made by esterifying 2-naphthol-6-sulphonic acid with benzenesulphonyl chloride, converting the sulphonic acid group via the chloride into the amide and hydrolysing the ester.  2-Naphthol-7-sulphonamide is made similarly, using p-toluene-instead of benzene-sulphonyl chloride, and likewise 2 - naphthol - 7 - sulphomethylamide using methylamine to react with the sulphonyl chloride group.  2 : 5 - Dimethoxyaniline - 4 - sulphomethylamide is prepared by acetylating 2 : 5-dimethoxyaniline, treating the product first with chlorosulphonic acid and then with methylamine, and finally hydrolysing the acetylamino group.ALSO:The invention comprises half-chromed azo dyes whose anions are of the formula <FORM:0681653/IV (c)/1> where X is methoxy or ethoxy, Y and Z are hydrogen, sulphonamide, sulphonmethylamide or sulphonethylamide, and Y is in one of the b -positions, which yield blue shades on wool, nylon or wool-nylon mixtures.  Black shades are obtained by using them in conjunction with the half-cobalt derivative of 4-nitro-2-aminophenol --> acetoacetanilide or the half-chromed derivative of 4-nitro-2-aminophenol --> b -naphthol.  The dyes of the above formula are obtained by chroming the parent dye or its monomethyl or monoethyl ether at 135-160 DEG  C. in the presence of ethylene glycol, formamide or acetamide.  The starting materials are obtained by coupling the appropriate diazotized 2 : 5-dialkoxyaniline or 2-hydroxy - 5 - alkoxyaniline with b  - naphthol or a 6- or 7-sulphonamide thereof. Examples are given of the preparation and chroming (with chromic acetate) of various monoazo dyes to give compounds of the above formula.  Further examples show the dyeing of wool and nylon.
Patent GB-365811-A (GB)
Title: Improvements in or relating to receiving apparatus for carrier current telegraphy
IPC: H04L27/08
Filed: 1931-02-02
Abstract: 365,811. Valve amplifying circuits. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. Feb. 2, 1931, No. 3331. Convention date, Feb. 1, 1930. [Class 40 (v).] In receiving apparatus for carrier current telegraphy the signal duration in the receiving relay is made independent of input level fluctuations by the action of a condenserresistance combination in the grid or anode circuit of an input amplifier valve whereby the amplification of the said valve is controlled. Signals from the line L are passed through a filter F, damping circuit D and transformer U1 to the amplifier V1 in the grid circuit of which is a resistance Rg in parallel with condenser Cg. The normal bias of V1 is such that at minimum signal level for which the relay ER is set, no grid current flows. Sudden increase in level causes the negative bias on the grid of V1 to increase by the voltage drop across Rg due to grid current thus tending to give constant level. The time constant of Rg, Cg is made large compared with signal duration. Signals are converted into impulses and subsequently rectified by the dry rectifier bridge G, a holding current being superposed on the signal before passing to the impulse amplifier V2. The output circuit is arranged to neutralize the effect of the anode current of V2 in the relay windings.
Patent GB-225095-A (GB)
Title: Pencil sharpening machine
IPC: B43L23/00
Filed: 1924-02-08
Abstract: 225,095. Vermehren, J. Feb. 8. 1924. Pencil-sharpeners.-A pencil-sharpening machine comprises a rotated pencil-containing sleeve 6, Fig. 2, and a rotated cutter 9 which is reciprocated along the axis of rotation in such a way that the knives 9<a>, Fig. 3, cut off only the wood of the pencil and the extreme end of the point of the lead, the knives moving parallel to a portion of the lead from which the wood has been removed. The cutter 9 is mounted so that it rotates with a shaft 10 and is reciprocated axially during its rotation by bearing against a fixed cam or guiding rail 18, Fig. 2<b> against which it is pressed by a spring 17. A casing 1 supports a conically bored steel block 3 carrying the sleeve 6, which is rotated through gearing 12 - - 15 from the cutter shaft 10, the latter being rotated by means of a crank handle 8. The pencil projects slightly through a wedge-shaped opening 4 in the block 3, the lower edges of the opening converging and then becoming parallel, as shown at 4 in Fig. 3, to support the lead. The guarding rail 18 or the front of the block 3 is shaped with two parallel vertical surfaces connected by intermediate inclined surfaces against which the non-cutting portion of the knives slide. A small plate 19 on the block 3 supports the point of the lead. To prevent the knives from being dulled by sliding against the steel block, the front of the block is somewhat retracted relatively to the guiding rail, or a small projection is provided on the rear of the knives. The casing has an opening for the cutter, a shield 21 to cover the cutter, and another opening through which a box 20 can be inserted for gathering the chips.
Patent GB-346073-A (GB)
Title: Improvements in or relating to internal expanding brakes
IPC: F16D65/14
Filed: 1930-01-31
Abstract: 346,073. Brake shoes acting on drums. PAYNE, M., 50, Hook Road, Surbiton, Surrey, and CLAYTON DEWANDRE CO. Ltd., Titanic Works, Lincoln. Jan. 31, 1930, No. 3352. [Class 103 (i).] In an internal expanding-brake for road vehicles of the kind in which the brake shoes 3 and brake-operating cam 3a or equivalent element are carried by a cover-plate 4 fixed to a non-rotatable axle 9 upon which the wheel and brake drum 1 are journalled, the inner ends of the pivotal support 7 for the shoes and the spindle 8 of the operating-cam are supported by an additional plate 5, directly secured to the axle 9 so as to relieve the plate 4 from bending stresses, the sheet-metal plates 4, 5 being dish-shaped and secured together at their inner edges 6. The cam-operating lever 11 is arranged between the plates 4, 5 and is connected to a Bowden cable 12, the sheath 14 of which is anchored to the plate 4.
Patent GB-486462-A (GB)
Title: Improvements in or relating to presses
IPC: B30B7/02
Filed: 1937-02-04
Abstract: 486,462. Moulding wallboard &c. REDDIE, L. N. (Aktiebolaget Defibrator) Feb. 4, 1937, No. 3391. [Class 87 (ii)] [Also in Group XVI] In single or multi-storey presses with horizontal vertically-movable press platens 6, Fig. 1, between which the material such as wallboard, is fed on wire cloths 8, the cloths are connected to their driving means by chains, ropes, &c. 10 that are guided by guides 12 movable with the platens and also by guides 14 that are mounted independently of the platens. The cloths are wound up on spring or other rollers 9, and are drawn between the platens by a vertical or horizontal roller 15. The guides 14 are so placed that the ropes 10 are not tensioned when the platens rise and do not therefore cause unwanted displacement of the wire clothes. In a modification, the ropes are secured at their ends on supports 23, Fig. 5, and are drawn by the depression of a bar 24 having rods 22 engaging the ropes between their supports 23 and fixed guides 21. In some cases, the ropes are guided by pulleys on a fixed axis and are drawn by the depression of a roller pulley forming a parallel loop in the ropes between the guide pulley and the anchorages of the ends of the ropes. In a modification, the ends of the ropes pass over further guiding devices and are connected to pistons movable in inter-connected cylinders provided with liquid or other fluid, whereby the tensions on the ropes are equalized.
Patent GB-1194491-A (GB)
Title: Improvements relating to Feed Devices for Agricultural Crops
Inventor: KLOPFER EMIL
IPC: A01D87/00
Filed: 1968-01-23
Abstract: 1,194,491. Conveyers. MASCHINENFABRIK FAHR A.G. 23 Jan., 1968 [25 Jan., 1967], No. 3436/68. Heading B8A. Agricultural crops are discharged from for example a truck on to a net or apron 3, one end of which is attached to a wind-up roller 2 whereby the crops may be moved towards a tine roller 5 for subsequent delivery to blowers of conveyer equipment, straw or chaff cutters or other type of agricultural equipment. The net or apron 3 is shaped to taper towards its free end to act against the tendency of the net or like to migrate towards one end of the winding roller and has a maximum width less than the operative length of the tine drum to reduce the risk of the edges of the crop not being sufficiently loosened.
Patent GB-760726-A (GB)
Title: Improvements in or relating to transistor amplifiers
IPC: H03F3/21
Filed: 1954-02-08
Abstract: 760,726. Transistor amplifying circuit. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. Feb. 8, 1954 [Feb. 7,1953], No. 3563/54. Class 40(6) A transistor circuit is fed from a source of such a high effective internal resistance compared with the input resistance of the transistor that the current fed to it is substantially a linear function of the source voltage. The source of signal voltage T is given a large effective internal resistance by the addition of resistor R which swamps changes in the input resistance of the base-emitter circuit B, E of the transistor. The primary of the transformer T is arranged in the collector lead of a preceding transistor amplifier. Reference has been directed by the Comptroller to Specification 745,483.
Patent GB-1302124-A (GB)
IPC: E01F9/669
Filed: 1970-01-26
Abstract: 1302124 Mounting lamps HORIZONTGERATEWERK DR HEINZ MULLER 26 Jan 1970 [24 Jan 1969] 3593/70 Heading F4R [Also in Division E2] A warning lamp 2 adapted to be secured to a barrier such as a post 12 comprises a bearing lug 3 carried by the lamp casing 1, a pair of threaded rods 6 connected to the lug 3, a cross-bar 7 having bores for the threaded rods, and a pair of clamping nuts 10 carried by the respective rods, the bar having recesses 9 for receiving and shrouding the nuts and the nuts being of circular cylindrical form so that in use they are inaccessible to conventional spanners adapted to grip the periphery. Each nut has a plurality of holes (11) in its exposed end face so that it can be turned by a pin spanner of corresponding, preferably non-standard, form. The rods 6 are preferably pivoted to the lug 3 by means of a shaft 5, the lug being rigidly secured to the casing 1 which supports the lamp housing 2 and may contain a battery. An additional clamping member (13, Figs 4 and 5, not shown) of L- shaped form may be loosely pivoted to the lug 3 by a pin and slot connection (14, 15) and engaged by the bar 7 so that when the lamp is mounted on the edge of a barrier board (12<SP>1</SP>) the board is clamped between the member and the lug. In a modification (Figs. 7 and 8, not shown) the rods are rigidly secured to a member 3 journalled on a stirrup-like handle (20) pivoted to the casing 1. To facilitate disengagement, one of the bores in the bar 7 may be open at one side so that the bar can be swung about the other rod when the nuts are loosened.
Patent GB-729087-A (GB)
Title: Measuring device
IPC: G01B13/16
Filed: 1953-02-09
Abstract: 729,087. Linear-dimension gauges. SANDVIKENS JERNVERKS AKTIEBOLAG. Feb. 9, 1953 [Feb. 9, 1952], No. 3601/53. Class 106 (2). A measuring device for indicating deviations in the distance between the surface of a moving or rotating body 18 and a head 15 spaced from said body, comprises at least one member 2 adapted to be influenced in accordance with a certain range of frequencies of said deviations, and at least one other member 3 adapted to be influenced in accordance with another range of frequencies of said deviations, the members 2 and 3 being coupled together in a manner such that the values that would be indicated by them are subtracted or added together. As illustrated, when the object 18 is revolved, a varying degree of throttling is set up across the escape aperture of the head 15 which in turn sets up a freely varying pressure in the bellows 2. In the bellows 3, however, an. almost constant pressure is maintained on account of the restricted passage 17. A lever 4, pivoted substantially at its centre, couples the bellows 2 and 3 and, in consequence, the pointer 6 is only responsive to the variations of the terms with a higher frequency. Adjustable electrical contacts may co-operate with the pointer 6 to indicate when tolerance limits are exceeded.
Patent GB-341732-A (GB)
Title: Improvements in or relating to frequency indicating, measuring and detecting systems
IPC: H03D3/24
Filed: 1930-02-03
Abstract: 341,732. Frequency measurements. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London.-(Assignees of Hansell, C. W.; Port Jefferson, Long Island, New York, U.S.A.) Feb. 3, 1930, No. 3672. Convention date, Feb. 1, 1929. [Class 37.] In means for measuring a high-frequency, the frequency to be measured or indicated is applied to an oscillator to vary its frequency, and the magnitude of the direct energy supplied to the oscillator is used as an indication of the frequency of the alternating current. In the simplest form, signals are applied from an aerial to a thermionic valve oscillator tuned just outside the range of the signals, and the resultant changes in plate current operate a loud-speaker or the like. (Fig. 1, not shown.) To measure the frequency the plate current is passed through a resistance across which a voltmeter is connected (Fig. 2, not shown). As shown, the signals after being amplified and passed through a current limiter 32 are heterodyned by a local oscillator 34, and the heterodyne frequencies are impressed on the circuits 44, 46 of two oscillators 40, 42, one tuned beyond one extremity of the signal range and the other beyond the other extremity. The signals are passed to a translating device 20 through a transformer 54 or a resistance amplifier (Fig. 4, not shown). The above oscillators oscillate at a common frequency between the resonant frequencies, but separate oscillators may be used (Fig. 5, not shown).
Patent GB-104721-A (GB)
Title: Improvements in or relating to Heat Interchanging Apparatus more particularly for use as Radiators for Heating Buildings and the like.
Inventor: PEASE EDWARD LLOYD
IPC: F28D1/053
Filed: 1916-03-11
Abstract: 104,721. Pease, E. L. March 11, 1916. Gills for tubes.-Relates to heat-exchanging apparatus of the kind in which one fluid flows in streams between metal gills forming part of a structure separating it from the other fluid. The width of the gills is so varied as to be greater where the temperature of the two fluids are more nearly equal. Figs. 3 and 4 show the application to a radiator of the kind described in Specification 4154/15, in which vertical gills are threaded on horizontal tubes h through which the heating- fluid flows in parallel between headers. The gills i are made to increase in width towards the top, where the temperature of the upward stream of air is highest, and may overlap alternately on opposite sides, as shown. In a modification, Fig. 5, the gills are arranged in contacting pairs. In a further modification, the tubes h are arranged in two vertical planes with no two tubes in the same horizontal plane, and the gills i are disposed symmetrically in relation to the tubes. Plate apparatus.-Fig. 7 shows the application to plate apparatus constructed as described in Specification 103,492, and in which water flowing between two vertical plates c is cooled by air f.owing through a casing f between gills c secured to the plates c. The width of the gills is increased in the direction of flow of the air.
Patent GB-1574023-A (GB)
Title: Antibiotic a-7413 and process for preparation thereof
IPC: A23K20/195
Filed: 1977-01-31
Abstract: The antibiotic mixture A-7413, which contains the factors A, B, C and D, and the physiologically tolerated salts of factors A, B and C, are obtained by culturing the novel microorganism Actinoplanes sp. NRRL 8122, under submerged, aerobic fermentation conditions, in a culture medium containing assimilable sources of carbohydrate, nitrogen and inorganic salts until a significant quantity of the antibiotic is formed and, where appropriate, forming physiologically tolerated salts of factors A, B and C of the A-7413 antibiotic. The A-7413 antibiotic mixture obtained by the process according to the invention, and the A-7413 compounds obtained by the process, are, for example, useful agents for promoting growth and for controlling dental caries and acne.
Patent GB-813013-A (GB)
Title: Fibre-forming compositions and the production thereof
IPC: C08L33/20
Filed: 1957-02-05
Abstract: Fibre-forming compositions comprise polyacrylonitrile or a copolymer of acrylonitrile and a cyanoethyl starch ether which is soluble in organic solvents but insoluble in water.  The weight ratio of the acrylonitrile polymer to the starch ether is preferably about 90:10. The compositions may be made by dissolving the acrylonitrile polymer and the starch ether in a mutual solvent, e.g. dimethyl formamide, to form a spinning solution which is spun into fibres which are dyeable by the cuprous ion method.  The spinning solution may contain titanium dioxide as an opacifying agent.
Patent GB-1341793-A (GB)
Title: Method and apparatus for feeding animals especially pigs
IPC: A01K5/02
Filed: 1972-01-27
Abstract: 1341793 Mixing circulating slurries INDUS TRIE-EN HANDELMAATSCHAPPIJ VOOR DE MIDDEN BETUWE NV 27 Jan 1972 [12 Feb 1971] 3943/72 Heading B1C [Also in Division A1] In order that an animal feed system should operate with a slurry which is as viscous as possible, a pump 11 maintains slurry under pressure in a main feed line 14 during the feeding and intervening periods. This pressure prevents any deterioration or separation to occur in the feed slurry remaining in line 14. A horizontal cylindrical feed mixer 1 mixes feed flour and water into a slurry which is heated and dispensed via pipes 28 into troughs 30. A return line 16 leads from the feed line 14 to the mixer 1 and is closed during the feeding period by a three-way control valve 12 so that the feed line 14 forms a closed loop. A switch sensitive to the pressure in the feed line 33 controls the pump 11 during this period so that pressure in the line is maintained at 3 atm. At the end of the feed period the slurry remaining in pipe 14 is maintained at this pressure whilst the interior of the mixer is washed by water which is limited in quantity to that necessary for the next feed slurry. Prior to the next feed period, the return line 16 is opened and the slurry in the feed line 14 is pumped to the mixer 1 where it is mixed with a freshly made slurry. The mixer 1 comprises a cylindrical vessel having two helical scrapers 21 mounted on a hollow shaft 20 which is conected at respective ends to a motor 23 and a water pipe. A sleeve surmounts the shaft 20 and communicates with its interior by a radial bore so that water may pass to spray nozzles 7. An outlet 25 connects the mixer to a conduit 19 on the suction side of the pump 11, and is covered by a curved screen (26, Fig. 3, not shown). Feed passes into the mixer from a hopper 17 which is protected from any vapor created during the washing process by a cover 18 which is actuated by a solenoid 31, and closes the inlet. A heating jacket 3 supplied with warm water from a heater 4 is mounted around the lower half of the vessel so as to heat the feed slurry.
Patent GB-1123092-A (GB)
Title: Improvements in hydraulic couplings
IPC: F16D33/18
Filed: 1966-01-28
Abstract: 1,123,092. Hydraulic couplings. SOC. ANON. FRANCAISE DU FERODO. 28 Jan., 1966 [13 Feb., 1965], No. 3970/66. Heading F2C. An hydraulic coupling for use in a spin drier has a scoop tube 34 which, during operation, continuously draws off liquid from an external chamber 18 in communication with the working circuit through calibrated openings 19 in the runner shell 12, a pipe 29 passing it to a cooler 30 from which it is returned to circuit through a pipe 31. As shown an output pulley 13 is driven by the runner 12. The drive also includes a one-way clutch 22 so that on reversal of torque, e.g. due to braking, a lever arm 40 is rotated against a spring 41 to open the drive motor switch 43.
Patent GB-1425071-A (GB)
Title: Method of producing photochromic sodalite crystals
IPC: C09K9/00
Filed: 1973-01-26
Abstract: 1425071 Photochromic materials and uses thereof INSTITUT YADERNOI FIZIKI AKEDEMII NAUK UZBEKSKOI SSR and ORDENA TRUDOVOGO KRASNOGO ZNAMENI INSTITUT KRISTALLOGRAFII IMENI AV SHUBNIKEVA AKADEMII NAUK SSR 26 Jan 1973 [4 Feb 1972] 4001/73 Heading C4S A method of inducing photochromism in a crystal of non-photochromic sodalite comprises irradiating with X-rays, γ-rays, neutrons, protons or α-particles, the radiation being of sufficient intensity and duration to also induce a photochromic red coloration in the crystal. Examples include dimensions, exposure times and temperatures. Holographic, 3D-TV and computer memory applications are mentioned and also cathode-ray image storing tubes.
Patent GB-210632-A (GB)
Title: Improvements in or relating to eye glass cases
IPC: A45C11/04
Filed: 1923-02-10
Abstract: 210,632. Hughes, T. Feb. 10, 1923. Fittings, internal.-Cases for articles such as eyeglasses are fitted with a flap 1 of flexible material, so that the eyeglasses 5 may be placed on one side of the flap and the chain or guard 7 on the other side, preventing entanglement. The flap 1 is provided with a tab 4 to facilitate use. In a modification the flap 1 is detachable, and adapted to be held in place by a flexible spring wire.