baber/WOPTO huggingface dataset:
Patent GB-1346351-A (GB)
Title: Method for preparing magnesium hydroxide and chlorine by electrolysis of aqueous magnesium chloride solutions
IPC: C25B1/20
Filed: 1971-08-19
Abstract: 1346351 Producing Mg(OH) 2  and chlorine electrolytically SALZDETFURTH A G 19 Aug 1971 [7 Dec 1970] 35935/71 Heading C7B In a method of producing Mg(OH) 2  and chlorine in a diaphragm cell with one or more vibrating, perforated double cathodes, the aqueous electrolyte contains MgCl 2  and alkali metal chloride with 5-150g/l MgCl 2  in the cathalyte and 5-280 g/l in the arolyte. The electrolyte contains at least 30g/l alkali metal chloride and some MgSO 4  may be added. The cathodes may be wire netting or louvred plates and are spaced up to 10mm from the diaphragm. The alkali metal chloride may be NaCl and/or KCl.
Patent GB-777676-A (GB)
Title: Improvements in or relating to the manufacture of memory-core matrices
Inventor: WINN RUSSELL EDWARD
IPC: G11C5/05
Filed: 1955-12-15
Abstract: 777,676. Bi-stable magnetic apparatus. MULLARD RADIO VALVE CO., Ltd. Dec. 15, 1955, No. 36018/55. Class 40 (4). A two-dimensional memory matrix comprising annular ferrite cores threaded by conductors is manufactured by locating the cores in spaced positions on a slotted plate, and threading with straight conductors, after which the matrix is removed from the plate and reduced in size by moving the rows of cores along the conductors threading the columns of cores and by moving the columns of cores along the conductors threading the rows of cores so that the matrix in its final form appears as shown in Fig. 5. An additional conductor may then be added, if required, by diagonal threading. Assembly is commenced by placing a heap of cores on a diagonally slotted plate 1, Figs. 1 and 2, which is then agitated. As a result the cores fall partially into slots 2 and are held in position by suction of a vacuum pump connected to ports 3. The plate is then turned over so that surplus cores fall off. Straight conductors are then passed through the cores, the wires being guided by apertures 5 in a border member 4 extending above the plate. The matrix is released by disconnecting the pump, and is reduced in size by the use of combs which have teeth passing between the matrix conductors, after which it may be fitted in a rectangular frame provided with terminals.
Patent GB-1149582-A (GB)
Title: A generator for explosively generating electric pulses
IPC: H03K3/02
Filed: 1966-08-12
Abstract: 1,149,582. Explosive charges. MT. AUBURN RESEARCH ASSOCIATES, Inc. 12 Aug., 1966 [25 Aug., 1965], No. 36133/66. Heading F3A. [Also in Division H2] A pulse generator useable in metal forming comprises an output circuit coil 22 coaxially within a tubular section explosive charge 12 which when detonated simultaneously around its circumference by a means 14 drives progressively radially inwardly to induce a current in the coil axially extending lines of magnetic force provided therebetween by a source 28. The latter is a permanent magnet; the means 14 is a conical line generator having an initiating blasting cap 16; and the charge 12, a flexible sheet of pentaerythritol tetranitrate, is cemented around a Cu tube liner 10.
Patent GB-429779-A (GB)
Title: Improved screw propeller
IPC: B63H1/12
Filed: 1933-12-23
Abstract: 429,779. Screw propellers. DEAR, A. V., 41, Wattletree. Road, Malvern, Victoria, Australia. Dec. 23, 1933, No. 36217. Convention date, Dec. 23, 1932. [Class 114] A screw propeller having one helical blade and one complete convolution is arranged so that at the mid-length of the blade the section is perpendicular to the axis and from this midpoint the pitch of the blade progressively increases both forward and aft and the generating line is inclined or raked relatively to the axis, the forward part of the blade being inclined forwardly at a progressively decreasing angle toward the leading end and the aft portion being inclined aft. The generator line, except at the mid-point, may be curved. The screw propeller has a single convolution blade which at its centre has a radial section, while at the forward end it is raked as at 5 and its after end is raked as at 6. The outer edge of the blade in end view may be a complete circle and may be fluted as indicated at 3, 4, and upon the faces of the blade are provided projections 9 which continue along the line of the outer flutes. These projections are formed of lozenge shape. Along the end portions corresponding to that between the part B and the edges 6, 5, the rate of increase of pitch and inclination may be accelerated. The boss 2 is provided with a number of helical grooves 18 and is stepped down at its end 19 to a conical nose end 2<a>.
Patent GB-804783-A (GB)
Title: Fuel controls for gas turbine power plants
IPC: G01N25/62
Filed: 1955-12-19
Abstract: 804,783. Automatic temperature control for gas turbines. UNITED AIRCRAFT CORPORATION. Dec. 19, 1955 [Dec. 21, 1954], No. 36333/55. Class 38 (4). The flow of fuel to a gas turbine is controlled by a signal obtained by comparing a signal produced by means responsive to turbine temperature and a signal produced by temperaturesetting means and modified by speed-responsive means. As described the pilot's control lever 70 of a turbo-prop installation operates a speedsetting cam 72 associated with the centrifugal governor 76, 78 of the pitch-setting mechanism of the propeller blades 88. The lever 70 also operates a scheduling device 74 to set potentiometers 100, 104 to produce D.C. signals representing respectively desired turbine temperature and desired speed. The desired temperature signal is modified by a speed error signal obtained from the comparison of the signal from potentiometer 104 and an actual speed signal from a tachometer generator 108, the error signal at point 110 being first differentiated in a long-time-constant circuit 114. The modified desired temperature signal, which is limited by a biased rectifier 128 if it exceeds a predetermined limit, is compared with an actual temperature signal from a thermocouple 136 and the temperature error signal, thus derived, is fed through an amplifier 140 to the fuel control means 142. The system thus provides the maximum allowable acceleration from one steady speed to another. The control may be applied to a straight jet power plant in which speed is controlled by nozzle area instead of propeller pitch. Specifications 514,725, [Group XXXIII], 751,003, [Group XXVI], are referred to.
Patent GB-920185-A (GB)
Title: Derailleur gear for bicycles
IPC: B62M25/00
Filed: 1960-10-24
Abstract: 920,185. Cycle &c. driving mechanisms. T. CAMPAGNOLO. Oct. 24, 1960 [Oct. 23, 1959; July 9, 1960], No. 36449/60. Class 136(2) [Also in Group XXIV] In a change-speed for bicycles the chain 14 is shifted on to either one of two pedal crank sprockets by a pressed-metal fork 13 carried wholly on the chain side of the frame seat tube 5 by two pivoted arms 11, 12 which, together with a mounting-clip 1 and the fork 13 form an articulated parallelogram operated by a control cable 22 acting on an extension 20 of the arm 11 in opposition to a return spring 28 disposed around the arm pivot 18. The anchor end of the spring has a hook 29 by which it can be released from its abutment 10.
Patent GB-315849-A (GB)
Title: Improvements in mercury vapour rectifiers
IPC: H01J13/16
Filed: 1928-12-11
Abstract: 315,849. General Electric Co., Ltd., and Weintraub, E., July 21, 1928, [Convention date]. Low-pressure metallic - vapour apparatus. -An anode is provided with a tubular prolongation arranged to surround a part of an associated tubular metallic shield so as to produce, in the neighbourhood of the anode, a static electric field unfavourable to back ignition. As shown in Fig. 1, an anode shield is formed of two concentric metal cylinders A, B, connected at C; the upper part of the cylinder A may be of insulating material. A cylindrical extension D of the anode P is disposed within the shield annulus and induces on the inner surface of the member B a charge of the same sign as on the anode. The cylinder D also facilitates the dissipation of heat from the anode. In a modification, Fig. 2, the inductive action may be increased by the insertion, between the members B, D, oi a dielectric such as a glass or quartz tube E. A capillary tube g may be provided to drain away condensed mercury. In a further modification, the outer cylinder is constituted by an extended arm of the rectifier.
Patent GB-963542-A (GB)
Title: Improvements in or relating to draught excluders
Inventor: ALDAM DONALD
IPC: E06B7/18
Filed: 1960-10-25
Abstract: 963,542. Draught excluders. E. HILL ALDAM & CO. Ltd. Sept. 29, 1961 [Oct. 25, 1960], No. 36667/60. Heading E1J. An adjustable draught excluder for a sliding door or window 2 comprises support members 16, 18 set in a rebate of the frame and sandwiching an excluder member 12 provided with a strip of resilient material 14 of felt, sponge rubber or the like which contacts the sliding member 2. The excluder member 12 has a slot at each end in which an eccentrically mounted cam 24 may be rotated by a screwdriver to adjust the excluder member 12 in position relative to the support members. The draught excluder may be alternatively mounted on the sliding window or door.
Patent GB-1183984-A (GB)
Title: Process for the production of Phenols
Inventor: LAWLEY HERBERT GEORGE
IPC: C07C37/50
Filed: 1967-08-10
Abstract: 1,183,984. Phenols. IMPERIAL CHEMICAL INDUSTRIES Ltd. 26 July, 1968 [10 Aug., 1967], No. 36697/67. Heading C2C. A process in which alkyl, cycloalkyl or aralkyl groups are removed from substituted phenols comprises contacting a phenol which is substituted by at least one alkyl, cycloalkyl or aralkyl group having at least 2 carbon atoms with ferric sulphate. The reaction is preferably carried out at 120-200 C. In the examples, 3 - methyl - 4,6 - di - tert. - butyl phenol is dealkylated to 3 - methyl - 6 - tert. - methyl phenol and 2,4,6-tri-tert.-butyl phenol to 4-tert.- butyl phenol. In addition, the treatment of the high boiling residue obtained by distilling acetone and phenol from the product obtained by splitting cumene hydroperoxide is described.
Patent GB-412606-A (GB)
Title: Improvements in, or relating to, automatic circuit-breakers
IPC: H01H71/74
Filed: 1932-12-30
Abstract: 412,606. Automatic circuit-breakers. CRABTREE, J. A., Endwood, Little Aston Park, Sutton Coldfield. Dec. 30, 1932, No. 36841. [Class 38 (v).] A circuit-breaker has a solenoid-release plunger which comprises a body of magnetic metal and a head of non-magnetic metal, and the solenoid coil is mounted on the outside of a frame which contains the switch-locking mechanism. The frame is apertured to enable the plunger head tp pass therethrough and impinge on the switch-locking mechanism. As applied to the breakers disclosed in Specification 415,393, the catch lever bl is engageable on overload by the non-magnetic extension c' of the magnetic plunger c<6> having an anti-stiction, non-magnetic washer c<8>. The plunger is housed in a sleeve f which, for current-setting, is threaded into a metal sleeve c<5>, around which is a bobbin c<3> carrying the winding c'. The end a' of the U-shaped blow-out magnet is apertured at a3 to receive the up-turned limbs e<1> of a cruciform spider e, which is secured to a<2> by bending over the ends of the limbs el and, in turn, secures the sleeve c<5>.
Patent GB-619705-A (GB)
Title: Improvements in or relating to pest control preparations
IPC: A01N35/02
Filed: 1946-12-13
Abstract: A pest-control preparation consists of non-fatty granular or other shaped masses consisting of metaldehyde, a non-fatty animal foodstuff such as middlings, bran or finings and a mucilaginous material such as gum acacia.  The preparation may be made by mixing the metaldehyde with a major proportion of the animal foodstuff, adding the mixture to an aqueous solution of the mucilaginous material, further mixing the product, partially drying the mixture, and forming the partially dried product into tablets.  Waxes or a starchy material may also be added. Specification 508,125 is referred to.
Patent GB-1206988-A (GB)
Title: Improvements in steel cables and wire for forming such cables
Inventor: GEIPEL HANS
IPC: C21D9/52
Filed: 1968-08-02
Abstract: 1,206,988. Making cable. HœTTENWERK OBERHAUSEN A.G. 2 Aug., 1968 [7 Aug., 1967], No. 36887/68. Heading B3A. [Also in Division C7] Steel cable is formed from wire containing at least 0À3% of carbon, the steel having been rolled in the austenitic state, cooled from the rolling temperature to below the austeniteferrite line of the iron-carbon diagram within 10 seconds and then at an average rate of at least 20‹ C. per second to a transformation temperature in the range 480‹-580‹ C. at which it is held for a short period. Preferably the initial cooling is effected by water-quench. ing, followed by cooling to the transformation temperature and soaking in a fluidized bed. As exemplified a steel containing 0À58% C, 0À38% Mn, 0À24% Si, 0À012% P and 0À020% S was rolled to 5.5 mm. at 800‹ C., cooled to 520‹ C. at an average rate of 40‹ C. per second, and held there for about 20 seconds; it was then drawn with about 90% reduction and the wire used to make cable.
Patent GB-760907-A (GB)
Title: Improvements in or relating to oil filter systems
IPC: B01D29/11
Filed: 1954-12-21
Abstract: 760,907. Filters. PUROLATOR PRODUCTS, Inc. Dec. 21, 1954 [Jan. 7, 1954], No. 36941/54. Class 46. [Also in Group XXXIV] A lubricating system for an automotive engine having an engine block and a filter, with filter element, mounted on the block, comprises slidable means movable between a pair of spaced-apart valve seats, for preventing drainback of oil when the engine is at rest, the means also permitting oil to by-pass the filter element by passage through the slidable means during engine operation when the element has become clogged. As shown, a base 15 carrying a filter installation 10 is connected to an engine block 11, a duct 12 on the block connected to the pump registering with a duet 34 leading to the outside of the filter, and a duct 13 in the block leading to engine parts registering with a duct 32 leading from the inside of the filter. A duct 35 shunted across ducts 32, 34 is provided with a valve structure 42 comprising a sleeve 43 provided at the ends with tapered edges for seating respectively against a tapered valve seat 45 at the top and a flexible ring member at the bottom of the duct. Inside the sleeve 43 is a spring 51 which acts through a pin 50 to press a seating member 49 into engagement with a seat 55 around the upper opening of the sleeve 43. When the engine is in operation oil from duct 34 passes up the duct 35 and the oil pressure raises the valve structure 42 upwardly until it is seated against the top of the duct 35. The oil passes along duct 33, up a central duct 28, around and then in through a body of filtering material 37, passing through perforated tubes 26, 40 and through ducts 32, 13 to the parts to be lubricated. If the oil pressure becomes excessive due to the filter element being clogged the pressure raises the sealing member 49 whereby the oil by-passes the filter. In a modification the shunt duct 35 is provided in the engine block 11 instead of in the base 15.
Patent GB-878687-A (GB)
Title: Improvements in and relating to cooking apparatus
IPC: A47J27/04
Filed: 1959-10-30
Abstract: 878,687. Egg &c. cooking. CABLE, R. G. Oct. 30, 1959, No. 36951/59. Class 28 (1). Eggs &c. resting on rod racks 6, 7 clear of bottom liquid are cooked by e.g. an immersion heater 4 and timed by a clockwork rotated insulated cam 11 preset by a knob so that a recess 13 in the cam allows an abutment 18 to be pulled up into the recess 13 to break the circuit 22-23 and open the lid by a spring 16 which pivots the lever 15 about 19<SP>1</SP> and pulls the rod 17 to pivot open the lid. A bell 19 or a light may indicate the end of the cooking. The rods 6, 7 may be rotated from the clockwork to turn over the food.
Patent GB-1239818-A (GB)
Title: Polysulfonated bis-s-triazinylamino-stilbene-2,2'-disulfonic acids
IPC: D21H21/32
Filed: 1968-08-02
Abstract: 1,239,818. Brightening textile materials. J. R. GEIGY A.G. 2 Aug., 1968 [3 Aug., 1967], No. 37026/68. Heading D1P. [Also in Divisions C2 and C3] Optical brighteners for fibrous cellulosic substrates comprise triazinyl compounds of the formula wherein A represents the residue of a non- aromatic N-containing heterocyclic ring which may also contain oxygen as a hetero atom and may be substituted by C 1-3  alkyl groups, R represents hydrogen, halogen or a C 1-6  alkyl group, and M<SP>+</SP> represents a cation derived from hydrogen, alkali metals, alkaline earth metals, optionally substituted ammonia or aluminium. The triazinyl compounds are particularly effective for brightening paper, but other specified substrates are cotton, staple fibre and rayon. Paper may be brightened by including the triazinyl compound in the pulp or, preferably, by surface treatment of the paper using, e.g., (a) an aqueous solution of the compound, (b) sizing compositions which are aqueous binder preparations, e.g. based on starch, or aqueous acrylic polymer compositions, or (c) coating compositions comprising a sizing composition and a white pigment. Textile substrates may be brightened by applying the triazinyl compounds from aqueous baths or by combining brightening with another treatment, e.g. washing, rinsing with softeners or imparting crease-resistant finishes with resin precondensates. Example 7 describes the preparation of paper from a brightened pulp. Example 8 relates to the brightening of cotton fabric. In Examples 9 and 10 brightening is combined with the application of a crease-resistant finish to cotton.
Patent GB-1525859-A (GB)
Title: Yarn texturing
IPC: D02G1/02
Filed: 1975-09-09
Abstract: 1525859 False twist crimping FIBER INDUSTRIES Inc 9 Sept 1975 [10 Sept 1974] 37068/75 Heading DIF A partially orientated multifilament polyester yarn 10 is simultaneously drawn between draw roll means 16, 22 and false twist crimped by twister 26 wherein the false twist backs upstream into heating zone 20 which is also the drawing zone, the yarn being withdrawn by roll 22 at at least 850 ft/min, and being partially orientated with a birefringence of at least 0.020, a crystallinity of not more than 40% and a break elongation of 50 to 200%, the yarn being twisted 40 to 200 twists per inch, heated to from 180‹C to just below its melting point, drawn 1.1 to 2.5 times the fed length and untwisted prior to take up. The false twist is preferably applied by friction from rotating flanges, discs or cylinders. A spindle twister capable of sufficient rotational speed would also be usable. Heater zone 20 is preferably a 1 metre long plate. Alternatively it may be a hot pin, heated rolls, steam chamber or hot air oven. In order to heat the yarn to 180 to 250‹C it is itself at a higher temperature. A second heating zone 28 which gives a yarn temperature of 180 to 230‹C may be combined with rollers 22, 30 to relax the false twisted yarn by 1 to 20%. The yarn is cooled to below 120‹C before entering twister 26 by allowing a sufficient cooling distance or by cooling air jets or air guides. Preferably, the yarn is textured at more than 850 to 4000 ft/min with the insertion of A/B twists per inch where A is 480 to 1000 and B is the square root of the denier. The feed yarn is produced by high speed (8,000 to 15,000 ft/min) take-up of extruded filaments to draw them to give a break elongation of 50 to 200%, a crystallinity of 0 to 40% and a birefringence of 0.020 to 0.100. Preferably the feed yarn denier is 15 to 1000 with a denier per filament of 1 to 10. The polyester is polyethylene terephthalate optionally copolymerised with isophthalic acid, sulpho-isophthalic acid, propylene glycol or butylene glycol or other monomers which provide cationic dyeable properties, and has an intrinsic viscosity of 0.45 to 1.0.
Patent GB-944812-A (GB)
Title: Musical instruments
IPC: G10D13/08
Filed: 1960-10-28
Abstract: 944,812. Musical instruments with sonorous bars. C. O. MUSSER. Sept. 29, 1961 [Oct. 28, 1960], No. 37118/60.Heading G5J. Internal walls 25 in a rectangular housing 12 form a resonator tuned to the same frequency as a vibrator 38 mounted on the housing. The resonator has an opening 22. The housing 12, which may be of plastic, carries resilient mountings 26 of synthetic rubber or of plastic. The mountings have openings 28 which fit over studs 24 in the housing G shaft 32 on each mounting has a head 34 which is forced through a hole in the vibrator bar 38. The bar may be of aluminium alloy. A number of vibrators and resonators are assembled in a housing, 40 formed with depressions 44 to locate the housings 12.
Patent GB-1537933-A (GB)
Title: Spectrophotometer with parallel sensing
IPC: G01N21/47
Filed: 1977-09-06
Abstract: A light source (2, 3) uniformly illuminates a specimen (1). The light radiated by the specimen (1) is collected by a lens (5). A slit (6) restricts the angle of the light emanating from the lens (5), which is thereupon decomposed by a dispersion device (8) into the various wavelengths. A lens arrangement (9) focuses the decomposed light and projects it onto a plurality of photodetectors (10) which are arranged in the plane of the focused spectrum. The signals of the photodetectors are evaluated in an electronic device (11). This spectrophotometer makes it possible for the intensities of the individual light components to be measured simultaneously. <IMAGE>
Patent GB-796688-A (GB)
Title: A method of manufacturing welding powders for electric submerged arc welding
IPC: B23K35/02
Filed: 1954-12-23
Abstract: In the manufacture of a flux for submerged are welding which comprises in its finished state several metal oxides, the starting materials, which are in powdered form, include some of the said oxides and the elementary metal of which the or each of the other oxides consists, this mixture of materials being melted at a temperature sufficiently high to obtain oxidation of the elementary metal, and being pulverized after its solidification. The elementary metal may be added in a quantity (i) exceeding that required for the oxide formation so that part of the metal remains as such in the finished powder, or (ii) less than that required for the oxide formation, the remainder of the oxide in the finished powder being provided by the addition of oxide to the starting material.  The metal may be included in the form of an alloy, e.g. ferro-alloy. Other materials which may be incorporated in the starting mixture are oxidizing agents, alkali metal or alkaline earth metal oxides, and halides such as fluorides.
Patent GB-1114421-A (GB)
Title: Vehicle transmission
Inventor: O'SULLIVAN DANIEL JAMES
IPC: B60K17/10
Filed: 1964-09-11
Abstract: 1,114,421. Tractor transmissions; power take-offs. DOWTY HYDRAULIC UNITS Ltd. 10 Sept., 1965 [11 Sept., 1964], No. 37290/64. Heading B7H. [Also in Division F2] In a tractor having continuously-variable hydrostatic gearing connecting the engine and driving axle, a power take-off shaft 66 is driven through a friction clutch 59 either by the output from the hydrostatic gearing or by an auxiliary shaft 34 directly connected to the engine crankshaft 1. The clutch 59 is engaged by fluid-pressure exerted on an annular piston 71 to couple the power take-off shaft 66 through spur gearing 62, 63 to an intermediate shaft 44 driven by a dog-clutch 47 engageable either with the auxiliary shaft 34 or with a gear 42 meshing with a gear 53 on the output shaft 22 from the hydrostatic gearing. The dog-clutch 47 may be a synchromesh type engageable when the shafts 22, 34 are in motion. The hydrostatic gearing comprises a tiltable pump 3 and motor 4 connected by hollow links 5, 6. The pump input shaft 7 is driven through gearing 32, 33 from the crankshaft 1, and the output shaft 22 carries a pinion driving a differential crown wheel 55. The friction clutch may alternatively be a double-acting type engageable with either the drive from the auxiliary shaft 34 or from the output shaft 22.