baber/WOPTO huggingface dataset:
Patent GB-850962-A (GB)
Title: Improvements relating to transfer sheets
Inventor: BURDETT GEORGE FREDERICK
IPC: B41M5/04
Filed: 1956-02-22
Abstract: 850,962. Hectographic transfer paper. KOLOK MANUFACTURING CO. Ltd. Jan. 31, 1957 [Feb. 22, 1956], No. 5523/56. Class 96. A hectographic transfer sheet comprises a base-sheet, a transfer coating, and a protective coating having a greatly reduced tendency for it to become contaminated by the dyestuff of the transfer coating. The protective coating may be waxy or non-waxy and is pigmented with a metal oxide or metal compound which is insoluble in water, alcohol, oil or wax and may contain additionally pigment not exceeding 20% by weight of the total which has an oil absorption of more than 20% by weight. Examples of the insoluble pigments are natural or synthetic metallic oxides such as red or yellow iron oxide, chromium green oxide or a chrome pigment such as pure orange chrome or lead chrome with low oil absorption and compact crystal structures. The waxy coatings may be applied by any usual method while non-waxy layers may be applied with the pigment dispersed in a volatile liquid which is a non-solvent for the pigment but dissolves a binder such as a natural synthetic resin. An example of a non- waxy coating uses ethyl cellulose with toluene as a solvent and Indian red iron oxide as the pigment. Specifications 631,373, 669,212 and 705,167 are referred to.
Patent GB-490613-A (GB)
Title: Improvements in or relating to noise-producing mechanism for toy-vehicle, aeroplane or stationary engines
IPC: A63H17/34
Filed: 1937-02-24
Abstract: 490,613. Toys. SCHMID, M. Feb. 24, 1937, No. 5530. [Class 132 (iii)] Mechanism for simulating in a toy the noise of the driving mechanism or exhaust on stationary engines and moving and stationary vehicles or aeroplanes, comprises a curved apertured resonant board r and diaphragm q struck by strikers n, o, n<1>, o<1>, oscillated through straps l, l<1> and rods h, h<1> actuated by oppositely disposed cranks g, g<1> on an axle on which is mounted a pinion f of the spring motor driving mechanism carried on frame e. The striker arms n, n<1> may be rigid or resilient. The noise-producing mechanism acts on the pinion f as a speed governor. The noise-producing mechanism and the driving mechanism can be rendered inoperative by moving the lever u, v, the end v<1> engaging the rod h<1>. The pinion x keyed on the rear axle 2 can be disconnected from the driving pinion y by moving the lever 10 to move the axle 2 in the guide slots 3 in the motor frame e, and thus the noise of the engine is simulated when the vehicle is stationary. The sound-producing mechanism is enclosed in top and bottom casings a, b which damp the noise. More than two strikers or only a single striker may be employed.
Patent GB-624035-A (GB)
Title: Improvements in and relating to catalysts
IPC: B01J23/72
Filed: 1947-02-26
Abstract: Copper-zinc foraminate catalysts are prepared by treating an alloy in which the ratio of copper to zinc, by weight, is from 25 : 75 to 60 : 40 with an aqueous solution of hydrochloric, sulphuric or nitric acid to remove not more than 70 per cent of the total initial zinc. Specified strengths of the extracting acids are: hydrochloric 5-35 per cent by weight; sulphuric and nitric 5-50 per cent by weight. Initially, 15 per cent zinc is removed, reactivation of the catalyst being effected by a further treatment with acid.  This is repeated until 70 per cent of the original zinc content has been removed. Before extraction the alloy constituents are melted together, rapidly cooled and broken up into fragments grading between 1/8 to 1/4 inch. The catalysts may be used for hydrogenation, dehydrogenation, hydrogenolysis and reductive amination, particularly furfural to furfuryl alcohol; nitrobenzene to aniline; and acetone to isopropanol.  The Provisional Specification describes the use of aqueous acetic acid, preferably 5 per cent by weight, for extracting the zinc.  Granules of the desired size may be obtained by cutting extruded rod.ALSO:Copper-zinc foraminate catalysts (see Group III) are used for the reduction of furfural to furfuryl alcohol, nitrobenzene to aniline and acetone to isopropanol.ALSO:Copper-zinc foraminate catalysts are prepared by treating an alloy in which the ratio of copper to zinc, by weight, is from 25 : 75 to 60 : 40 with an aqueous solution of hydrochloric, sulphuric or nitric acid to remove not more than 70 per cent of the total initial zinc.  The zinc is preferably not removed in a single operation.
Patent GB-261230-A (GB)
Title: Improvements in portable cinematographic projectors
IPC: G03B21/14
Filed: 1926-02-27
Abstract: 261,230. Brewer, G., (Ernemann-Werke Akt.-Ges.). Feb. 27, 1926. Optical-projection apparatus. - Apparatus for projecting kinematograph and still pictures by one light source comprises a casing 1 containing the light source 3, a rear reflector 4, the kinematograph mechanism, and a projecting lens, and a detachable casing 6 containing a mirror 11 and the still projection system, apertures 8 being formed in the casings to permit the passage of light, and a shutter being provided so that the aperture in the casing 1 may be closed when desired. Condensing lenses may be arranged as shown, and the lamp may be so placed that the plane of its filaments is transverse to both axes of illumination. Supports 15, Fig. 6, may be pivoted on the casing 1 so that they may be folded under it, and storage chamber for lantern slides may be provided beneath the, casing 6. The casing 1 may contain a fan drawing air through an opening covered by a plate having perforations forming a mark indicating the origin of the apparatus.
Patent GB-1267781-A (GB)
Title: Anthraquinone dyestuffs
Inventor: PETERS KARL-HEINZ
IPC: C09B1/54
Filed: 1970-02-05
Abstract: 1,267,781. Laminated papers. FARBENFABRIKEN BAYER A.G. 5 Feb., 1970 [15 Feb., 1969], No. 5606/70. Heading B5N. [Also in Divisions C3 and C4] Laminated papers are coloured with dyestuffs of the formula wherein R is a substituent, p is 0-6, m is 4 and n is 1 or 2.
Patent GB-364403-A (GB)
Title: An improved process for the production of low boiling hydrocarbon oils from heavier, higher boiling hydrocarbon oils by the action of hydrogen at elevated temperatures
IPC: C10G47/00
Filed: 1931-02-23
Abstract: Heated heavy oils are passed with hydrogen into a heat-insulated drum 11 packed with catalyst 12; the mixed liquid and vapour products are withdrawn through a cooler 4 and separator 15, and after passing a pressure-reducing valve 25 are <PICT:0364403/III/1> fractionated in a tower 26.  Heavy products are withdrawn from the system by a pipe 41; a fraction suitable for motor fuel is condensed by a cooler 37, and the middle fraction from the pan 30 is returned by pipe 31 to the heating coil 6.
Patent GB-825057-A (GB)
Title: Improvements in and relating to gas turbine plants
Filed: 1956-02-23
Abstract: 825,057. Gas turbine plant. HENSCHEL & SOHN G.m.b.H. Feb. 23, 1956 [Feb. 26, 1955], No. 5650/56. Drawings to Specification. Class 110 (3). [Also in Group XIII] In a gas turbine plant comprising a compressor, a combustion chamber, a turbine and a heat exchanger using the exhaust gases from the turbine for heating the compressed air for the turbine, the heat exchanger has an exhaust utilization efficiency of at least 85%, the turbine gas inlet temperature is above 600 C., the compression ratio is below a maximum of 3.0 and the pressure loss of the exhaust gases in the heat exchanger is below a maximum of 700 mm. water column. The heat utilization efficiency is stated to be the ratio of the increase in temperature in the heat exchanger to the difference in temperature between the gas outlet from the turbine and the air outlet from the compressor. The heat exchanger (see Group XIII) is preferably in the form of a regenerator having a filling medium which pass alternately the hot exhaust gases and the air from the compressor. The regenerator may be ring-shaped with the flow in the axial direction and may be rotated either intermittently or continuously. Between the collecting chambers for air and exhaust gases on the air outlet side of the regenerator drum there is arranged an ash-collecting chamber in which the ashes blown out of the filling material of the regenerator drum by the air are collected. The regenerator may be placed around the compressor or turbine or both or between the compressor and turbine.
Patent GB-906032-A (GB)
Title: Improvements in or relating to adjusting devices for electrical indicating instruments
Inventor: BENTON MAURICE IVOR
IPC: G01D11/16
Filed: 1958-02-21
Abstract: 906,032. Indicating-apparatus. ENGLISH ELECTRIC CO. Ltd. Feb. 20, 1959 [Feb. 21, 1958], No. 5677/58. Class 106 (4). A " zero button " 5 for an electrical indicating instrument operates through a flanged bush extending through a hole in the glass 1 so that the flange 3 engages its rear surface, a resilient sealing ring 6 is located in a recess on the under face of the button and a resilient metal clip 8 on the shaft holds the button 5 in position with the sealing ring 6 compressed. The sealing ring 6 seats against a shim washer 7 and lubricant may be provided on the surface engaging the glass 1. A cover plate 4 is interposed between the flange 3 and glass 1 and is preferably made of a material with a high coefficient of friction. A stop 9 on the bush 2 prevents the clip 8 from rotating.
Patent GB-1532001-A (GB)
Title: Pneumatic springs
IPC: F16F/
Filed: 1975-10-30
Abstract: 1532001 Valves; filling shock absorbers ARMSTRONG PATENTS CO Ltd 30 Oct 1975 [11 Feb 1975] 5701/75 Headings F2Vand F2S A one-way charging valve for a pneumatic spring comprises a resilient ring 36 carried in a groove 32 in an end plug 18. The plug has a slot 34 into which the ring is deformed under charging pressure. In addition to the pressurized gas, a small quantity of oil may be introduced into the cylinder 12 to provide hydraulic damping at the ends of the stroke.
Patent GB-442921-A (GB)
Title: Improved lubricating oils
IPC: C10G71/00
Filed: 1935-02-22
Abstract: Lubricating-oils especially for use in internal-combustion engines are mixed with a small amount of an ester formed with an alcohol containing at least 10 carbon atoms and an acid containing less than 10 and preferably less than 6 carbon atoms.  Alcohols specified are: lauryl, phenyl octadecyl, stearyl, cetyl, oleyl alcohol; alcohols derived from wool fat, or by the reduction of animal, vegetable or fish oils; or obtained by treating cracked paraffin wax or petroleum oils with sulphuric acid and then hydrolyzing the product; or alcohols obtained by direct oxidation of hydrocarbons using boric acid as catalyst.  High molecular polyalcohols such as 7--18 stearylene glycol obtained by hydrogenating castor oil and alcohols substituted with amino-, halogen and sulpho groups are suitable.  The preferred acid component is formic or acetic acid, but other preferably aliphatic saturated or unsaturated or hydroxy low molecular acids may be used such as are obtained in paraffin wax oxidation; or aromatic or naphthenic acids.  Lubricating oils used are petroleum oils which have preferably been refined by clay, acid, solvent extraction, or hydrogenation and may contain fatty oils. White oils and untreated distillates which may be totally dewaxed or not are also suitable.  Dyes, voltolized oils, pour point depressants, lead tetraethyl or tetra phenyl or the corresponding compounds of tin, mercury, bismuth, arsenic, or antimony may be added together with oxidation inhibitors such as aromatic mercaptans, thio ethers, disulphides or polysulphides.
Patent GB-1407351-A (GB)
Title: Injection lasers
IPC: H01S5/028
Filed: 1973-02-06
Abstract: 1407351 Lasers STANDARD TELEPHONES & CABLES Ltd 6 Feb 1973 5783/73 Addition to 1275886 Heading H1C To increase the peak power output of an injection laser 4 without destruction of its output surface 3 by the optical electric field intensity, the surface is provided with an interference coating providing a negative electric vector amplitude reflection coefficient. As shown the output surface of a GaAs laser has an interference coating made up of successive quarter-wavelength thickness layers of titania (TiO) 9, silica (SiO 2 ) 8 and titania 10. A similar negative electric vector amplitude reflection coefficient is obtained at the opposite end surface 2 of the laser body by providing successive quarter-wavelength thickness insulating layers of silica 6 and titania 7 between the surface and an aluminium reflecting layer 5. In a modification the titania layers 7, 8, 10 may be replaced by silicon monoxide. Other combinations of an odd number of alternately high and low refractive index, quarter-wavelength thickness layers may be used.
Patent GB-1509311-A (GB)
Title: Cables
IPC: D07B1/00
Filed: 1975-02-11
Abstract: 1509311 Reinforcing cords and cables MICHELIN ET CIE (COMPAGNIE GENERALE DES ETABS MICHELIN) 11 Feb 1975 [12 Feb 1974] 5791/75 Heading D1T A reinforcement cable for reinforcing articles made of an elastic or readily deformable material comprises two or more components, one of the components comprising a core 40 formed of at least one element 401, and the or each of the other components comprising a stranded layer surrounding the core 40 (two layers 41, 42 are shown), the elements 411 or 421 in any one layer being identical. Each element consists of either a single, continuous, solid filament or two or more continuous solid filaments twisted together. Each component is no more than one layer of elements thick and is formed of a material having a different modulus of elasticity from that of the material forming the or each radially spaced adjacent contacting component. At least one of the components is metal. The core elements may have a modulus of elasticity lower than the elements of a peripheral layer.
Patent GB-1102362-A (GB)
Title: Process for drafting staple fibres and improved web produced according to such process
IPC: D02G3/40
Filed: 1965-02-10
Abstract: 1,102,362. Drafting fibres. PAVENA A.G. 10, Feb., 1965 [15. Feb., 1964], No. 5829/65. Headings D1D and D1F. A method of drafting staple fibres between a pair of feed rollers and a pair of delivery rollers, comprises the steps of passing a non- twisted "stable band" (i.e. one in which the fibres are adhesively bonded together by a setting-agent) through the feed rollers, gripping in turn one or more individual fibres by means of a pair of delivery rollers so that each fibre or group so gripped is subjected to a high tensional load increasing up to the failure of the bond between the fibre or group and the adjacent fibres, and withdrawing the fibre or group substantially without force by means of the delivery rollers. The method aims to avoid the use of fibre control means, such as aprons, in the drafting zone (although a guide may be employed in the drafting zone which merely smooths away projecting fibres and does not compress the material), and to promote "cross-sectional stability" and "transverse stability" of the material undergoing drafting, thereby preventing "drafting waves" i.e. irregularities, appearing in the drafted material. "Cross-sectional stability" is defined as meaning that the band retains its cross-sectional configuration before and after entering the feed nip; "transverse stability" is defined as meaning that when a fibre enters the delivery-nip and is subjected to a high tensile load, as described below, the load is distributed throughout the remaining fibres so that it is not substantially elongated, although an elongation arising merely from the aligning of the molecular chains of the fibre may result. The method may be applied to preparatory and final drafting; in the former, two or more slivers may be doubled. Further the method may be used in two-stage drafting. The distance between the nips of the delivery and feed rollers may exceed the stable length of the fibres. In Fig. 2, a band consisting of fibres bonded together as described in Specification 1102363, is shown approaching the nip plane EK of delivery rollers. The fibres, being arranged naturally at random, project beyond one another, and are gripped in the nip one at a time. Fibre c, being bonded to adjacent fibres is subjected to a pull K c  which increases until the bond fails, at which point the pull falls almost to zero and the fibre is carried away by the delivery rollers with practically no force. The pull is of short duration and the elongation of the fibre, i.e. its "lengthwise stability", minimal, thereby reducing the possibility of irregular drafting. The other fibres are held back by the fibres to which they are bonded. The lengthwise stability of the band may be tested by an instrument or by the readiness with which it breaks under its own weight.
Patent GB-575714-A (GB)
Title: Measuring motion for measuring a pre-determined length of thread or threads and the like for use with thread and the like winding machines
IPC: B65H63/08
Filed: 1944-03-31
Abstract: 575,714. Measuring- and stop-motion for thread &c, winding machines. AYRTON & CO., Ltd., W., and OSBOURNE, F. March 31, 1944, No. 5967. [Classes 120 (ii) and 120 (iii)] A motion for measuring a predetermined length of thread &c. to be wound by a winding machine, thereafter stopping the machine, comprises a measuring wheel 12, over which the thread passes, a rotatable member 33 geared to the wheel 12, a dial coaxial with and rotatably mounted on the member 33, means for fixing the dial in any desired position, relative to a fixed index, a trip member 34 associated with the member 33 through clutch means, a pointer on the member 34 co-operating with the dial, a stop on the dial against which the pointer may be set so that when the required amount of thread has been wound, the pointer moves back to zero and stop mechanism is operated to stop the machine. The measuring wheel 12, e.g., of “ yd. circumference, is rotated by the frictional contact of the thread &c. being measured, passing on its way to the winding spool. The wheel 12, through worm and worm wheel gearing 15, 16 ; 18, 19, spur gearing 21, 24 or 22, 25 and further worm to worm wheel gearing 28, 29 drives the rotatable member 33 comprising a male clutch part which is spring pressed against the trip member 34 accommodating a female clutch part. The friction therebetween may, however, be overcome by the manipulation of the member 34 through a handle 37 attached thereto. Attached to the trip member 34 is an indicating finger 38 which moves over a rotatable dial 39, which, after a required adjustment, may be locked in position. The dial carries a fixed abutment 43. In use, when say 4,000 yards of thread are to be measured, the graduation 4,000 on the dial is brought to the fixed zero 44, on the machine casing, and the trip member 34 is moved anti-clockwise (Fig. 4) until the finger 38 contacts the abutment 43 fixed on the dial 39. This movement of the trip member 34 moves a projection 35 thereon a distance away from an adjustable knock-off lever 45. The winding operation is now begun, the member 34 is driven clockwise, the pointer 38 moving over the dial 39 until it gets to the zero position, when the projection 39 lifts the lever 45 to stop the winding operation. The spur gears 21, 24 ; 22, 25 may be selected, alternatively, by the operation of a finger 26, so that with, say, a gear ratio of 5:1 the apparatus may measure 0-5,000 yards or, alternatively, 0-25,000 yards, and the dial 39 is graduated, accordingly, with inner and outer calibrations. The usual pivoted levers 54, which operate to stop the machine when a thread breaks or fails, may be provided.
Patent GB-197451-A (GB)
Title: Flexible "engaged" indicator for theatre and other seats
IPC: A47C1/13
Filed: 1922-03-01
Abstract: 197,451. Crowder, H. B., and Crowder, T. C. March 1, 1922. ' Engaged ' and like indicators.-The indicating member b is moved laterally by the engagement of a key against ribs d to bring the letters of the indication into or out of register with spaced apertures in the casing a. The parts are flexible to conform to the back of a chair.
Patent GB-235289-A (GB)
Title: Improvements in and relating to keys or the like devices for securing members together and preventing relative rotational movement between them
IPC: F16B3/00
Filed: 1924-03-10
Abstract: 235,289. British Thomson-Houston Co., Ltd., and Dumas, R. March 10, 1924. Securing together machine elements for the transmission of rotary motion.-Double dovetail keys for securing together members, such as the rotor and stator stamping of dynamo-electric machines and their supporting frames, comprise oppositely tapered wedges a, b adapted to be driven in from opposite ends and to bear on the connected parts c, d by their inclined faces f only, clearance e being elsewhere provided in the keyways. Locking-means may be arranged to bear on the large ends h of the component wedges. Such means may, according to the Provisional Specification, be those described in Specification 235,683.
Patent GB-415745-A (GB)
Title: Improvements in or relating to condensers suitable for use in high frequency radio and similar circuits
IPC: H01G4/258
Filed: 1933-02-28
Abstract: 415,745. Electric condensers. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London, and MOULLIN, E. B., 189, Morrell Avenue, Oxford. Feb. 28, 1933, No. 6134. [Class 38 (ii).] In order to prevent changes in the capacity of condensers for use in high-frequency circuits due to temperature variations the plates are made of an alloy having a substantially zero temperature coefficient of expansion (known under the Registered Trade Marks, " Invar," " Elinvar,") coated, for example, by electrodeposition, with a thin shell of copper. The copper shell is of such thickness that the effective resistance at radio frequencies is substantially the same as that of solid copper and a rise in temperature produces a small mechanical stress in the copper plating without producing appreciable alteration in the dimensions of the plates.
Patent GB-864097-A (GB)
Title: Polyether derivatives
Inventor: GENTLES ROBERT PAUL
IPC: C07H15/08
Filed: 1958-02-26
Abstract: Polyethers are prepared by reacting polyhydroxy compounds with alkylene oxides alone or together with polyepoxides, using dimethyl sulphoxide as reaction medium.  The polyhydroxy compounds must melt at temperatures above 120 DEG C. or melt only with decomposition and must be soluble in dimethyl sulphoxide. Suitable compounds are trimethylolethane, pentaerythritol, tetramethylolcyclohexanol, sucrose, a -methyl glucoside and other sugars, mannitol, inositol and quebrachitol.  Specified alkylene oxides are ethylene, propylene and butylene oxides.  Specified polyepoxides are 1:2-3:4-diepoxybutane, diallyl ether dioxide and 2,6-dioxaspiro-[3,3]-heptane.  The reaction may be effected at temperatures of 50 DEG  to 150 DEG C. and in the presence of alkaline catalyst.  Examples are given in which the reactions are carried out under nitrogen, the catalyst neutralised with adipic acid and then the polyethers bleached with hydrogen peroxide.  According to the Provisional Specification, epihalo hydrins such as epichlorhydrin, may be used in place of or in admixture with the alkylene oxides.
Patent GB-549364-A (GB)
Title: Improvements in or relating to brakes
IPC: F16D65/22
Filed: 1941-05-14
Abstract: 549,364. Brakes. BENDIX AVIATION CORPORATION. May 14, 1941, No. 6245. Convention date, Sept. 28, 1940. [Class 103 (i)] An adjustable anchor device for brake shoes 14, 16 comprises members 32 which screw into a socket comprising a half-sleeve 24 and the wall 20 of a groove formed in the anchor plate 12. The halfsleeve is formed with a number of prongs 26 which enter openings in and are welded to the anchor plate. The brake shown is one in which each shoe anchors at one end or the other according to the direction of rotation of the drum 10; a projection 18 on the plate 12 providing the anchor for the other ends of the shoes. The shoes expanded by levers 40 pivotally mounted at 42, 44 on the shoe 14, and acting on the ends of the shoe 16 through thrust members 46 and operated by a pair of pistons in the hydraulic cylinder 36. If the drum is rotating anti-clockwise when the brake is applied, the shoe 14 anchors on one of the screws 32 and the shoe 16 on the projection 18 on the anchor plate.