baber/WOPTO huggingface dataset:
Patent GB-1495866-A (GB)
Title: Liquid-level sensor
IPC: H01H36/02
Filed: 1976-01-12
Abstract: 1495866 Liquid level sensors BENDIX CORP 12 Jan 1976 [25 Feb 1975] 01027/76 Headings G1H and G1N In a float type liquid level sensor in which a magnet 12 and casing member 11 are arranged for relative movement a ferromagnetic fluid 21 is disposed in the clearance between the magnet 11 and casing 12 and retained therein by the magnetic field of the magnet. The fluid 21 may be a colloidal suspension of ferrite particles in kerosene and as well as preventing the liquid in which the sensor is immersed from entering the clearance it also acts as a lubricant. In operation magnet 12 is  secured to a container whose liquid is to be measured and the casing 11 carrying an inductor 16 floats on the top of the liquid. The change in inductance of the inductor is detected by a circuit coupled to leads 17, 18, lead 19 being earthed. Alternatively inductor -16 may be replaced by magnetic field responsive reed switches or Hall effect devices.
Patent GB-323379-A (GB)
Title: Improvements in the manufacture of tiles, bricks and other pottery-ware
IPC: C04B33/02
Filed: 1929-01-11
Abstract: 323,379. Mellor, J. W., and Ceramic Patent Holdings, Ltd. Jan. 11, 1929. Clay, carthenware, and like plastic compositions.-A body composition, especially for making tiles, bricks and slabs, comprises the waste obtained by the washing of China-clay and a flux adapted to bring the temperature at which the articles can be fired below the temperature for ordinary biscuit firing. Suitable fluxes comprise borates of alkaline earths, including magnesium, silicates of alkalies or alkaline earths, or mixtures of these. Colouring matter such as red clay, chrome oxide or pyrolusite may be added. In an example a body mixture for brown tiles comprises 92 per cent waste, 5 per cent pyrolusite and 3 per cent flux consisting of a, fritted mixture of 42 per cent soda ash, 50 per cent flint and 8 per cent whiting. The tiles are fired at a temperature corresponding to Seger cone 1.
Patent GB-1355024-A (GB)
Title: Windscreen wiper blades
IPC: B60S1/38
Filed: 1973-01-09
Abstract: 1355024 Windscreen wipers FAUSTO CARELLO & CO SpA 9 Jan 1973 [21 Jan 1972] 1133/73 Heading A4F A windscreen wiper blade harness comprises two blade holders 6 at the ends of, and formed integrally with, a main yoke 2, a tab 11 at one end of each blade holder 6 forming an abutment for one end of a wiper blade 16, and a pair of longitudinally offset resilient hooks 7, 8 or 9, 10 at each end of each blade holder 6. The members 2, 6 are preferably of plastics material and the hooks 7 to 10 engage ridges 13 on a plastics backing member 12 having a longitudinal groove 14 receiving a ridge 17 at the rear of the wiper blade 16.
Patent GB-737323-A (GB)
Title: Improvements in or relating to magnetic transducing heads
Inventor: WOLFENDALE FREDERIC
IPC: G11B5/187
Filed: 1953-01-15
Abstract: 737,323. Magnetic sound-recording and reproducing heads. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Jan. 14, 1954 [Jan. 15, 1953], No. 1182/53. Class 40 (2). A magnetic head comprising U-shaped laminations 1 which terminate in parts of reduced thickness 2, 3 has a removable unit 14, comprising the non-magnetic gap 19, which unit may be removed, when worn, by loosening a clamping screw 24. The laminations 1 are held between members 4, 5 which may be of moulded insulating material and aluminium, respectively. The unit 14 comprises magnetic plates 15, 16 stuck between a pair of cheeks 18 of non-magnetic material, e.g. phosphor-bronze. One cheek 18 is cut away at its lower end (as shown), while the other cheek has an arcuate surface at its lower end to prevent wear of the polepieces. In a modification, Fig. 6, the cheeks 35 are cut away so that the magnetic members 37, 38 make direct contact with the laminations 30 which may include a non- magnetic gap 31. One of the cheeks 18 or 35 may be dispensed with.
Patent GB-580648-A (GB)
Title: Improvements in or relating to deposition of metallic selenium on a base element
IPC: H01L21/10
Filed: 1944-01-21
Abstract: A coating of metallic selenium is applied to a bare element, for example of carbon, by immersing it in a solution of an alkaline selenide.  The preferred solution contains sodium hydroxide of about 50 to 200 grammes per litre treated with selenium or selenium compound, e.g. hydrogen selenide to an approximately saturated condition.  Specification 302,177, [Class 37], is referred to.
Patent GB-680022-A (GB)
Title: Improvements in and relating to elements for use in constructional engineering
Inventor: PARTRIDGE FREDERICK ALFRED
IPC: E04C3/08
Filed: 1950-01-18
Abstract: 680,022. Girders. BRAITHWAITE & CO., ENGINEERS., Ltd., and WILSON, G. Jan. 15, 1951 [Jan. 18, 1950], No. 1303/50. Class 20(ii) [Also in Group XXII] A structural beam or like element is built up from spaced components interconnected through projections on at least one of them which is curved in the plane of the said projections so that the latter lie along either the concave or the convex side of the component. The curved components are made by dividing straight strip plate or the web of a straight beam longitudinally along a sinuous cut and then bending the parts obtained to the required curvature. When making an element from two curved .components, Fig. 3, the component 2a is formed from a beam shorter than that from which the component 1a is made, the cuts dividing the beams being of pitches in the same proportions as the lengths of the beams. In a modification, Fig. 4, the projections are of triangular form, joined by welds 4, or the tips of the teeth may be overlapped and joined.
Patent GB-831870-A (GB)
Title: Improvements in and relating to a method of manufacturing semiconducting materials
IPC: C30B13/00
Filed: 1957-01-14
Abstract: <PICT:0831870/III/1> Silicon is deposited from an atmosphere of hydrogen and silicon tetrachloride as a thin layer on a metallic strip heated to 1300 DEG  C. and the layer is converted in situ into a monocrystal by heating the strip and layer to 2170 DEG  C. and then cooling.  A strip 10 (Fig. 1) of tantalum is placed in a vessel 8, a mixture of hydrogen and silicon tetrachloride vapour is passed in at inlet 1, and the tantalum strip 10 is heated by an electric current to 1300 DEG  C. so that the silicon tetrachloride decomposes and silicon is deposited on the strip 10.  A high-frequency electric current is then passed through a heating coil 7 to raise the temperature of the silicon layer to 2170 DEG  C., or higher, and the coil is moved along the vessel 8 so that a molten zone passes along the length of the silicon and a single crystal of silicon is obtained.  If the speed of the coil is reduced, tantalum diffuses into the silicon and a single crystal of silicon of N-type conductivity is obtained.
Patent GB-459174-A (GB)
Title: Improvements in and relating to engine speed governors
IPC: G05D13/00
Filed: 1936-01-15
Abstract: 459,174. Speed governors. HEMMING- SEN, T. V., 4, Otto Ruds Vej, Copenhagen. Jan. 15, 1936, No. 1335. [Class 57] An inertia governor in which weights 9, 15 are pivoted to an oscillating lever 11 and at certain speeds move so that projections 12 or 17 engage notches 25 or 26 on a lever 20 which is connected to the regulating mechanism of the engine. The lever 20 is pivoted at 2 and has a cam surface 34 formed upon it which is engaged by a spring- loaded roller 35. When the lever 20 is moved by one of the weights, the roller 35 engages a more curved part of the cam and moves the lever further and retains it there so that in subsequent strokes of the weights, no contact takes place between the weights and the lever. The spring-loaded roller may be mounted on the lever and engage a stationary cam. Alternatively, the lever may be loaded by a spring so that when it moves from a mean position, the spring tends to urge it further. The movement of the lever is limited by stops 51. Specification 333,085, [Class 57], is referred to.
Patent GB-1478581-A (GB)
Title: Optical waveguide coupler
IPC: G02B6/30
Filed: 1975-01-13
Abstract: 1478581 Light guides RCA CORPORATION 13 Jan 1975 [29 Jan 1974] 1358/75 Heading G2J An optical coupler comprises a planar waveguide having a longitudinal region 410 in which light is propagated, a fibre optic waveguide having a core 402 the surface of a longitudinal portion of which is inclined at # to the length of the region 410 in sufficient over-lapping proximity to an area of the region to permit intercoupling of only phase-matched evanescent fields, and a dielectric line grating between the over-lapping surface and the area, the line spacing S being oriented at # to the length of the region 410, wherein:- where the terms are as indicated on the Figure, and K 1 , K 2  are propagation vectors, h 1 , h 2  refractive indices, and # 0  is the free space wavelength of the light. The depth of the lines of the grating varies from one end of the grating to the other, in accordance with an exponential function.
Patent GB-1441263-A (GB)
Title: Process for producing polymeric film
IPC: B29C48/08
Filed: 1973-01-10
Abstract: 1441263 Longitudinally stretching films AGFA-GEVAERT 6 Nov 1973 [10 Jan 1973] 1413/73 Heading B5B In the longitudinal stretching of a film by using a cooled rotating draw roll or drum a heat transfer liquid is applied between the film and the roller to the edge portions of the film and the corresponding peripheral portions of the roller in order to reduce and stabilize necking in of the film. The width of the treated edge zones is preferably less than 1¢ times the width of the edge portion subsequently trimmed from the film. The liquid, preferably glycol, is applied, via the brushing contact of a resilient material saturated with and connected to a source of said liquid, to either the roller or direct to the film which may be polyethylene terephthalate. Apparatus is also claimed.
Patent GB-941966-A (GB)
Title: Improvements relating to driving rollers for conveyor belts and the like
IPC: B65G23/04
Filed: 1960-01-14
Abstract: 941,966. Driving rollers for conveyer belts. F. G. DENTON. Jan. 16, 1961 [Jan. 14, 1960], No. 1420/60. Heading B8A. [Also in Division F2] In Figs. 1, 2, a driving roller for a conveyer belt or the like comprises a steel drum 2 on a shaft 4, the surface of the drum being covered by a layer 8 of natural or synthetic rubber. Longitudinal incisions 10 and circumferential incisions 12 are made in the rubber. In a modification, Fig. 3, a rubber cylinder 14 is mounted directly on the shaft 4. The incisions may be made by a tool while the roller is held in a lathe or supported on cradles. P.V.C. and other high polymers are also specified as resilient material for the roller.
Patent GB-1332724-A (GB)
Title: Air cleaners
IPC: B04C5/12
Filed: 1971-01-12
Abstract: 1332724 Cyclone separators; pneumatic vibratory classifier R A FORSBERG 12 Jan 1971 [14 Jan 1970] 1450/71 Headings B2P and B2H A closed circuit air cleaning arrangement comprises a materials processing apparatus, e.g. a pneumtic and vibratory classifier 10, Fig. 5, through which air is moved for processing the materials, the air being dust-laden at the exhaust 11 from the apparatus which has a housing to confine the air; a fan 13, Fig. 3, for moving the air through the processing apparatus; and a cyclone-type air cleaner 25, Fig. 3, having an inlet for receiving the dustladen air from the processing apparatus and having an air outlet 27 for delivering cleaned air to the processing apparatus for re-use. The classifier 10 has a perforated supporting deck 18 to which materials M to be classified are delivered via a duct 22 and a spreader 22a and which is oscillated through linkage powered by a motor 23. The cleaned air from the outlet 27 of the cyclone passes into a plenum chamber formed by a housing 24 containing the cyclone and the fan and is returned via a conduit from an outlet 24a in the housing 24 to an inlet 16 in the apparatus 10 where it flows upwardly through the perforated deck 18 thereby stratifying the materials M into several layers. The heaviest materials forming the lowest layer are discharged via a spout 21 and heavy and light materials are discharged through spouts 19 and 20 respectively. The dust is entrained with the air which is sucked via the outlet pipe 11 by the fan 13 and delivered to the cyclone 25. The cyclone air outlet 27 has a lower slotted portion 27.2 constituted by vanes 27.5 through which the air flows in the same direction as through the interior of the cyclone. The cyclone has a dust removing air lock 29 operated by a motor 30 which is connected by a chain drive 31 to a belt conveyor 32 which receives the dust discharged from the air lock. In another arrangement, Figs. 6 and 7 (not shown), a two-stage cyclone is used.
Patent GB-397468-A (GB)
Title: Improvements relating to the distillation of materials containing hydrocarbons to produce light hydrocarbons and organic compounds
IPC: C10C1/04
Filed: 1932-01-18
Abstract: Hydrocarbons free from phenols and suitable for use as fuel for internal-combustion engines are obtained by subjecting a mixture of a mineral oil with creosote oil, tar acids or coal distillation products containing tar acids, in finely divided condition and with or without the addition of steam or residual gases of the process, to extensive surface contact with catalysts at a temperature of from 350-650 DEG  C., and withdrawing the product as soon as it is free from phenols.  The following catalysts are specified: iron, nickel, steel, copper, cobalt, manganese, chromium, molybdenum, tin, aluminium, alkali metals, alkaline earth metals, silicon, boron and alloys, mixtures or compounds thereof, pumice, firebrick, silica gel, porcelain, silica and electric furnace products such as carborundum, siloxicon, electric furnace treated carbon, alundum, carbides, nitrides, silicides, borides, alloys of iron and aluminium and mixtures and compounds thereof.  When any of the catalysts employed are porous, the pores should be sealed with other catalysts.  Any coal distillation product containing phenols derived from the heat treatment of coal of any grade from peat to anthracite may be used. The product obtained by distilling a mixture of powdered coal with the mineral oil and tar acids &c. is also suitable.  In one example, a coal tar distillate freed from pitch, sulphur, &c. is mixed with mineral oil and passed at the rate of two gallons a minute through a long tube at 550 DEG  C., which may be lined with copper.  The vapours then pass into a catalytic chamber packed with small rings of copper.  In a second example, a mixture of creosote oil freed from sulphur and arsenic, with a mineral oil is treated in the presence of steam according to the process of example 1.  By employing suitable pressures cracking of the vapours may take place, but the high pressures such as are used in hydrogenation processes are not employed.
Patent GB-1453127-A (GB)
Title: Polyester resin composition
IPC: C08G63/60
Filed: 1974-01-11
Abstract: 1453127 Powder coating compositions NIPPON ESTER CO Ltd 11 Jan 1974 [11 Jan 1973 8 Feb 1973 24 March 1973] 01459/74 Headings C3R and C3B A composition suitable for preparing a powder paint is obtained by mixing a hardener with a molten polyester having free hydroxy and/or carboxy groups and an average degree of polymerization of from 5 to 50, prepared by depolymerizing a highly polymerized polyester having acid units and diol units and having an intrinsic viscosity of not less than 0À4, by reaction at 200-280 C. with a non-volatile alcohol and/or a non-volatile ester, wherein the acid units consist of from 40-80 mole per cent of terephthalic acid units, from 20-60 mole per cent of p-hydroxybenzoic acid units and up to 20 mole per cent of saturated aliphatic dicarboxylic acid units, and at least 50 mole per cent of the diol units comprise ethylene glycol units; wherein the hardener is (a) a diglycidyl compound, the amount thereof satisfying the relationship where E is the number of glycidyl group equivalents of the hardener and C is the number of carboxyl group equivalents of the polyester, (b) a hexaalkoxymethylmelamine or condensate thereof, the amount thereof satisfying the following relationship where M is the number of alkoxy group equivalents of the hardener and H is the number of hydroxy group equivalents of the polyester, or (c) a di- or poly-isocyanate blocked with from 0À9 to 2À0 equivalents of #-caprolactam or acetoxime, the amount of the blocked isocyanate satisfying the relationship where N is the number of isocyanate group equivalents of the hardener and H is as above. The carboxyl group content of the polyester may be adjusted by reaction with a polycarboxylic anhydride. The examples describe compositions containing (i) a polyester prepared by depolymerizing by reaction with bis-#- hydroxyethylterephthalate, #-hydroxyethyl-phydroxyethoxybenzoate, the ester derived from pentaerythritol and stearic acid, trimethylol propane or pentaerythritol a polyester derived from dimethyl terephthalate, methyl p-hydroxybenzoate and ethylene glycol, optionally with adipic acid, azelaic acid, sebaric acid, neopentyl glycol, diethylene glycol or 1,4-butanediol and (ii) the above hardeners: blocked isocyanates (Example 1), diglycidyl phthalate and an epichlorohydrin-bisphenol type epoxy resin (Example 2) and hexa-methoxy or butoxy-methyl melamine (Example 3). The compositions are pulverized and coated on steel plate.
Patent GB-1133993-A (GB)
Title: Ventilators
IPC: E06B7/02
Filed: 1965-01-14
Abstract: 1,133,993. Ventilators. J. V. EURICH. 17 Dec., 1965 [14 Jan., 1965; 25 Oct., 1965], Nos. 1594/65 and 45161/65. Heading F4V. A ventilator comprises a first member having a plurality of recesses 16 formed in one face thereof and apertures 15 each of which is in communication with one end of an associated recess 16, and a second member 11 having apertures 14 communicating with the opposite ends of said recesses. As shown, the recesses are formed by securing a member 13 having relatively large apertures therein to a member 12 having the apertures 15. In an alternative embodiment (Fig. 2, not shown) the recesses are formed integrally in the first member which is slidable relative to the second member to form a hit-and-miss ventilator. The recesses alternate with non-apertured recesses with which the apertures in the second member register when the ventilator is in the closed position. The ventilator may alternatively be formed from two identical recessed and apertured plates which are secured together so that the recesses co-operate but the apertures are out of alignment.
Patent GB-1460074-A (GB)
Title: Coding and decoding apparatus
IPC: G07F7/10
Filed: 1974-01-14
Abstract: 1460074 Check digit calculation ETAB TELTEST RD 14 Jan 1974 [12 Jan 1973] 01651/74 Heading G4A A memory is addressed by keyed-in items of information in a business message (e.g. date, day of week, month, amount, currency) to read out numbers chosen arbitrarily, and an adder accumulates the numbers read from the memory to produce a check number which may be appended to a message before transmission or may be checked against the check number transmitted with a received message, whereby the authenticity of the message can be verified. The look-up table of arbitrary numbers may be entered in the memory from the keyboard or from a magnetic card inserted in the machine, and new cards may be created by copying the contents of the memory into a blank card. Alterations of part of the table in memory or on a card may also be made. Display lamps for entered data, addresses and for indicating a detected parity error are provided. The machine may have security locks for read/write and calculate operations.
Patent GB-1451164-A (GB)
Title: Time recorder
IPC: G07C1/00
Filed: 1974-01-14
Abstract: 1451164 Workmen's time recorder SIMPLEX TIME RECORDER CO 14 Jan 1974 [12 Jan 1973] 01734/74 Heading G4T In a workmen's time recorder, wherein on each insertion of a time card a line of time data is printed on the card and the card is also deformed, e.g. punched, at a position indicative of the position of the printed line so that, when the card is next inserted, a sensing of the deformation can be used to position the card correctly for reception of the next line of print, the sensing of the deformation is not used directly to position the card but is instead used to determine which of a number of discrete, predetermined, equi-spaced positions of an indexable end stop for the card is to be operative. As shown, the end stop comprises a slide 202, having a lug 206 projecting into the card slot, so that insertion of the card moves the slide downwardly and, through cord 196 passing over pulley 198, rotates a toothed wheel 190 against the action of spring 194. The desired end stop position is determined by a pawl 160, which is raised by a spring 168 into engagement with the corresponding tooth of toothed wheel 190 when a lever 138 is pivoted anticlockwise by depression of a slide 124. The way in which slide 124 is depressed depends upon whether or not the card has previously been inserted, i.e. whether or not the card is formed with at least one punched hole 78c. The leading edge of an inserted, new (unpunched) card, as well as moving slide 202 downwardly, also depresses a slide 98 when it coacts with lug 104, lug 102 of slide 98 then depressing the slide 124. On the other hand, if the card has at least one punched hole 78c, then a pivoted sensing finger 142 is spring- urged into the or the lowest hole and thereafter depressed by further insertion of the card, thus depressing slide 124. Depression of slide 124 (by either method) closes a switch 208 and, as previously discussed, raises pawl 160 into engagement with toothed wheel 190, which continues rotating until the pawl has been swung into contact with the edge of a hole (not shown) in bracket 162, microswitch 182 thus being closed. Closure of both switches 208, 182 energises a solenoid, Figs. 1 and 2 (not shown), which through a toggle linkage, Figs. 4 and 5 (not shown) operates a printing platen and the punch and also pivots slide 124 clear of lug 102 or finger 142, spring 132 then raising slide 124 to open the switch 208.
Patent GB-137610-A (GB)
Title: Improvements in clamping or locking devices for ropes, chains or the like
IPC: B61B12/12
Filed: 1919-01-24
Abstract: 137,610. English Sewing Cotton Co., and Bennett, A. Jan. 24, 1919. Rope grips.-A clamping-device for ropes, chains, &c., particularly applicable for the ropes of lifts and hoists, comprises a base-plate A, a sliding plate C mounted between walls a of the base-plate, and a pivoted plate D, between which and the sliding plate C the rope F is adapted to be gripped: The plate D is pivoted on a rod d which is carried by springs E, and has an adjustable screw d bearing against the plate C, by means of which the plate D is turned to grip the rope when the plate C is operated by a rotating camlever G. A spring E<2> is mounted between the plates A, C and another spring E<1> between the plates A, D. The cam lever G is mounted on a threaded bolt B to enable it to be adjusted. The device can be used in conjunction with a safety locking-device for the doors of the lift well, such as those described in Specifications 5922/11, [Class 78 (iii), Lifts &c.], 4982/14, and 137,611, [Class 78 (iii), Lifts &c.].
Patent GB-634383-A (GB)
Title: Improvements relating to attenuator circuit arrangements such as volume control circuit arrangements for audio amplifiers, radio receivers and the like
IPC: H03G9/00
Filed: 1947-01-21
Abstract: 634,383. Impedance networks. ROSE, J. C. Jan. 21, 1947, No. 1847. [Class 40 (viii)] A tone-compensated volume control giving a bass lift at low volume levels comprises a pair of ganged potentiometers 1, 2 connected in cascade, together with a condenser 4 which is interposed in the earth connexion of the first potentiometer.