baber/WOPTO huggingface dataset:
Patent GB-794641-A (GB)
Title: Improvements in or relating to processes for the production of pure germanium and silicon
IPC: C25D3/36
Filed: 1954-04-15
Abstract: Impurities in a germanium or silicon halide are converted into substances having a different volatility from said halide by one or more chemical or electrochemical methods of reduction which affect the germanium or silicon halide either not at all or only to a negligible extent, the germanium or silicon halide is separated from the converted impurity substances, and the purified halide is reduced to give pure germanium or silicon. Typically tin, magnesium, or zinc, e.g. as chips, are added to germanium tetrachloride which has not been subjected to special drying procedures and contains arsenic, antimony and iron chlorides as impurities, whereby arsenic and antimony are reduced to elementary form and deposited on the added metal, some of which is oxidized to its chloride, while the ferric chloride is reduced to ferrous chloride.  Alternatively, nascent hydrogen produced by the addition of zinc and hydrochloric acid or by the addition of hydrochloric or hydrobromic acid and electrolysis is used to reduce the arsenic and antimony impurities to the gaseous hydrides, which escape aided by the passage of an inert gas through the reaction vessel, while ferric and cupric chlorides are reduced to the lower chlorides or the metals.  Silicon halides may be similarly treated.  In a further method, germanium tetrachloride containing trace impurities of iron, cobalt, nickel and copper is dehydrated and purified by addition of one or more alkali or alkaline earth metal carbonates which remove hydrochloric acid present due to hydrolysis of the germanium tetrachloride and is subsequently or simultaneously distilled off.  Typically the impure germanium tetrachloride is boiled with anhydrous sodium carbonate.  In each case the treated tetrachloride is distilled off and is reduced to elementary form, as by hydrolysing to the oxide followed by reduction with hydrogen.
Patent GB-474027-A (GB)
Title: Improvements in or relating to chairs or the like
IPC: A47C3/021
Filed: 1936-04-20
Abstract: Chairs having U-shaped resilient cantilever supports have the supports being bent by the load constructed of layers of a resin-fibrous material, additional layers being added, if desired, at parts of greatest stress.  The supports may be the main support of the chair or the back of the chair.  The supports may be connected by cross-bars which may be bent to serve as back supports or arm rests. The resin may be transparent and the fibrous filler may be glass wool.
Patent GB-1027733-A (GB)
Title: Improvements relating to remote control systems
Inventor: MARENBACH KLAUS
IPC: G08C15/02
Filed: 1963-03-21
Abstract: 1,027,733. Electric selective signalling. LICENTIA PATENT-VERWALTUNGSG.m.b.H. March 21, 1963, No. 11295/63. Heading G4H. In a remote control system employing timedivision multiplexing for the transmission of frequency-significant signals, all the signals go through the same set of frequency-responsive means (filters F1-F5, not shown) at the receiving station. Indications may be sent from field stations to a central station as above, the field stations being selected in turn by a wiper synchronized with a wiper selecting banks of indicators (Fig. 2, not shown), or by control frequencies sent from the central station (Fig. 3, not shown). Frequencies to control or correct the indications later to be sent from the field stations may be transmitted to the latter from the central station (Fig. 4, not shown).
Patent GB-1022318-A (GB)
Title: Improvements in or relating to fan heaters
IPC: F24H3/04
Filed: 1964-03-18
Abstract: 1022318 Fan heaters VAN DER HEEM N V 18 March 1964 [18 March 1963] 11348/64 Headings F4V and VB2A In a fan heater, to obtain an evenly distributed slow-speed flow of air over a large outlet area, an axial type fan sucks air through the bottom of the housing and the column of air "trapped" above is ejected centrifugally towards the outlet at the front. As shown in plan, Fig. 2, the wall of the fan housing may have unequal legs 13, 14, and a deflector 17 may be mounted on (or formed in) the wall 13 to direct air towards the end 16 of the outlet.
Patent GB-113527-A (GB)
IPC: F02N15/06
Abstract: 113,527. Bendix, V. March 29, 1917. Toothed pinions.-A pinion 2, threaded on a motor-driven screw shaft for longitudinal movement into gear with an engine wheel 4 and rotary movement to drive the wheel, as described in Specification 20811/14 [Class 7 (v), Internal-combustion engines, Storting &c.]. has its teeth 2<a> chamfered at their engaging end 2<b> on the side opposite the driving side, and the ends of the teeth are curved at 2<c>, with a straight portion 2<d> extending slightly beyond the pitch line. The pinion has a part 7 of its bore unthreaded, causing the weighted end 5 to produce a binding effect on the screw shaft when the latter rotates at ocansiderable speed, in order to prevent the return of the pinion against the wheel 4 if the starting-motor is not switched off.
Patent GB-904780-A (GB)
Title: Manufacture of trimethylol alkanes
IPC: C07C31/18
Filed: 1959-04-03
Abstract: Trimethylol alkanes are prepared by reacting at least three moles of formaldehyde with one mole of a C2 to C20 saturated aliphatic aldehyde having at least 2 a -carbon atoms, and at least one equivalent of a base at 5-80 DEG C., the rate of addition of base being such as to maintain a pH of 7-13 in the reaction mixture until addition of the higher aldehyde is substantially complete, and the rate of addition of higher aldehyde being such as to maintain a free higher aldehyde concentration of below about 25% based on the total higher aldehyde employed.  The base may be an alkali metal hydroxide, suitably used in aqueous solution.  In examples, butyraldehyde is converted into trimethylol propane and generally, RCH2CHO gives RC(CH2OH)3.
Patent GB-995326-A (GB)
Title: Improvements in or relating to disc brakes
IPC: F16D65/54
Filed: 1963-03-22
Abstract: 995,326. Disc brakes. H. TEVES, E. A. TEVES, and M. TAUSEND, [trading as TEVES MASCHINENUND ARMATURENFABRIK KOMM.-GES. ALFRED]. March 22, 1963 [May 2, 1962], No. 11432/63. Heading F2E. A spot-type hydraulically-actuated disc brake comprises an automatically positioned friction grip adjuster 11, Fig. 1, upon a rod 10 extending into the cylinder of a piston 4 mounting a brake shoe 3, a retraction spring 13 coacting through a support thimble 14 with the adjuster and the piston to bias the latter to the brakedisengaged position against the pressure of liquid admitted to the cylinder through a port 2, a second spring 8 coacting with the adjuster 11 through a second thimble 15 to bias the piston 4 &c. in the brake-engaging direction, such brake engagement being prevented by the abutment of a cover 6 fast with the piston against an adjustment disc 9 itself abutting the second thimble 15, yielding of the second spring 8 occurring when the brake disc wobbles, e.g. when a vehicle in which the brake is used rounds a comer. In a modified construction, two support thimbles 17, 18, Fig. 2, are connected together to form a collar 19, a retraction spring 13 acting through the support thimbles upon an automatically positioned friction grip adjuster 11 mounted upon a rod 10 and also acting upon an adjustment disc 6 screw-threaded into the end of a piston 4 slidable in a surrounding cylinder, a second spring 8 between the flanged end 21 of one of the support thimbles and a mounting ring 22 abutting the adjuster 11 yielding when the brake disc wobbles. Shoe-mounting hydraulic units according to the invention may be used in pairs on opposite sides of the brake disc.
Patent GB-103080-A (GB)
Title: Improvements in or applicable to Cranes and other Hoisting Apparatus.
Inventor: PRIESTMAN LIONEL DENT
IPC: B66D5/00
Filed: 1916-08-14
Abstract: 103,080. Priestman, L. D., and Prince, S. Aug. 14, 1916. Control-transmitting gear for winding apparatus. - In cranes, hoists, grab-dredgers, and similar lifting-appliances wherein the hoisting-clutch a and the brake g<1> are operated by the same hand-lever d, the brake is applied fully prior to the release of the clutch between the engine and the hoisting-drum g. The clutch is actuated by a bell-crank lever b, b<1> having a pin- and-slot connexion with the connecting-rod c and engaged by a pivoted catch e when the clutch is in gear. When the lever d is moved upwards, the brake g' is at once tightened, but the clutch a is not withdrawn by the spring h until a stop c<1> attached to the connecting-rod c has moved the catch e out of engagement with the lever b<1>.
Patent GB-1426173-A (GB)
Title: Fluid filter elements
IPC: B01D46/24
Filed: 1972-03-11
Abstract: 1426173 Fluid filter elements GENERAL MOTORS LTD 8 Feb 1973 [11 March 1972] 11463/72 Headings B1D and BIT An annular filter element of resin impregnated paper has pleats of W or M form in which alternate pleats are of different widths, the pleats having impressed spaces in the form of ribs 6, bars 7, or dimples (not shown). In Fig. 4 each edge of the pleats has two close folds which folds between the wide and narrow pleats are less close at least at locations 5 adjacent the ends of the filter element. The impressed bars 7 may be tapered towards the centre of the element and space the wider pleats. The ribs 6 being impressed towards the inside of the filter element space the wide pleats from the narrow pleats. The external face of the element may have an adhesive strip 16a at its ends to individually seal pleats or the pleats may be secured in end caps 12 together with a perforate centre tube 11 by an annular ring of adhesive e.g. thermosetting or cold curing plastics. An external perforate case 10 may cover the element.
Patent GB-372072-A (GB)
Title: Improvements in means for cooling pistons, particularly in internal combustion engines
IPC: F01P3/10
Filed: 1931-04-17
Abstract: 372,072. Lubricating stuffing-boxes. PAWLIKOWSKI, T. R., 15, Cottbuser Strasse, G÷rlitz, Germany. April 17, 1931, No. 11468. [Class 12 (ii).] In piston-cooling means comprising telescopic tubes, one 6 of which is secured to the piston 1, and one 8 to a stationary water chamber by a universal joint, the fixed tube is provided with a stuffing-box 9 which can be tightened up by an outer jacket tube 10 which screws into the fixed tube 8, and a supply of lubricating-oil is passed through the annular space 13 between the tubes 8, 10 to the stuffing-box 9, which consists of two parts 16,17.
Patent GB-114833-A (GB)
IPC: D02G3/40
Abstract: 114,833. Meyer, A. E. April 7, 1917, [Convention date]. Yarns and threads; processes.-Yarn is made with little or no twist, the requisite strength being provided by the use of adhesive material, and used for making knitted or woven fabrics. The yarn is spun and twisted in the ordinary way and then treated with glue, gelatine, starch, or other adhesive material, dried, brushed, if desired, and untwisted to the desired extent by the use of a twisting-frame, the spindles of which are rotated in a direction to untwist the yarn, or by other suitable means. The yarn is then incorporated in a fabric, after which the adhesive material is removed by a suitable solvent. Specification 10308/06 is referred to.
Patent GB-567811-A (GB)
Title: Improvements in parachutes and method of producing same
IPC: B64D17/00
Filed: 1943-07-14
Abstract: 567,811. Parachutes. PIONEER PARACHUTE CO., Inc. July 14, 1943, No. 11489. Convention date, Feb. 25, 1942. [Class 4] The shroud lines of a parachute are so arranged that the fabric of the canopy is prevented from being drawn taut when the parachute is in use. In the construction according to Fig. 1, the shroud lines 24 extend diametrically across the canopy and vent, and are secured to the fabric at points 26, 28, adjacent the vent and skirt respectively. The length of the portions of the lines 30 extending across the vent is less than the expanded diameter of the vent, and the length of those portions between the attachment points 26, 28 is less than the free length of the fabric seams, whereby the canopy is permitted to bulge between the shroud lines during descent of the parachute. In the modification shown in Fig. 5, the shroud lines do not extend across the vent, their ends being secured to grommets 40 through which is passed a cord 38 whose length is less than the circumference of the expanded vent.
Patent GB-610951-A (GB)
Title: Improvements in or relating to frequency modulated radio and like transmitters
IPC: H03B5/18
Filed: 1946-04-15
Abstract: 610,951. Frequency modulation. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and COOPER, V. J. April 15, 1946, No. 11545. [Classes 40 (v) and 40 (vi)] A valve circuit operating as a variablemodulating reactance is associated with the tuned cathode circuit of an oscillator, the grid circuit of which comprises a coaxial tubular or equivalent line for determining the mean oscillation frequency. As shown in Fig. 1, the oscillator valves V1 and the reactance valves V2 are arranged as push-pull pairs the oscillator grids being connected to tappings on a halfwave line 3, and the anodes earthed through a condenser 9. The cathodes are connected to a tuned circuit 10, 11, across which are connected the grid-cathode impedances of the reactance valves V2, whose anodes are connected to a damped tuned circuit 17 and are connected to the opposite grids by neutralizing condensers NC. Modulating voltage applied to a central tap on the grid coil 14 produces a FM wave which may be taken off by coupling the load to the line 3 or to the circuit 10, 11. The line 3 may be replaced by a quarter-wave line inductively coupled to the grids of the valves V1 ; and the valves V2 may be of the screengrid type and the neutralizing condensers NC omitted, Figs. 2 and 3 (not shown). The modulating voltage may be applied to the anodes or screen-grids of the valves V2.
Patent GB-1455813-A (GB)
Title: Process for preparing substituted dibenzofurans of 9-fluorenones
IPC: C07C49/675
Filed: 1975-03-20
Abstract: 1455813 Preparation of dibenzofurans or 9-fluorenones UBE INDUSTRIES Ltd 20 March 1975 [29 March 1974] 11559/75 Heading C2C A process for preparing a substituted dibenzofuran or 9 - fluorenone compound of formula in which A represents an alkyl, alkoxyl, nitro, halogen, alkanoyloxy, alkoxycarbonyl or phenyl radical or an alkyl radical substituted with an alkoxy, nitro, halogen, alkoxycarbonyl, phenyl or nitrile radical, n 1  and n 2 , which can be the same or different, each represents O or an integer from 1 to 4 and n 1  + n 2  represents an integer from 1 to 8, and X represents an oxygen atom or carbonyl group; comprises intramolecular cyclization by a substituted aromatic compound of the formula in which A 1 , n 1 , n 2  and X have the meanings given above, having a free hydrogen atom in at least one ortho-position of each ring in the presence of from 0À1 to 0À001 mole, per mole of substituted aromatic compound, of a carboxylic acid salt of palladium and/or a palladium organic complex as catalyst under pressure in an oxygen-containing atmosphere with a partial pressure of 2 to 300 kg./cm.<SP>2</SP> of oxygen. The reaction is preferably carried out in the presence of an inert organic solvent.
Patent GB-890204-A (GB)
Title: Scouring of textile materials
Inventor: WICKER RONALD JAMES
IPC: C11D3/00
Filed: 1958-04-11
Abstract: Textile materials are scoured by contacting them with an aqueous medium containing a sucrose ester of one or more fatty acids.  The esters are preferably water-dispersible and preferably contain 8 to 20 carbon atoms in the fatty acid radical.  Preferred esters are sucrose monostearate, distearate, monopalmitate and dipalmitate or a mixture of two or more of such esters.  Specified textile materials are fibres and fabrics consisting of synthetic fibres, e.g. polyamides, polyester, acrylic polymers, regenerated cellulose, cellulose acetate and cellulose triacetate, and natural fibres, e.g. cotton and wool.  The process is suitable for de-gumming silk.
Patent GB-1131619-A (GB)
Title: Improvements in or relating to beam convergence devices for colour television tubes
IPC: H01J29/70
Filed: 1966-03-17
Abstract: 1,131,619. Colour television tubes. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 17 March, 1966 [20 March, 1965], No. 11699/66. Heading H1D. In a beam convergence device for the lateral displacement of the electron beams from three electron guns 3, 5, 7 in a colour television tube, symmetrical displacements of the three beams are effected by two oppositely directed transverse magnetic fields derived from permanent magnets 23 mounted in a rotatable magnet support 21, one of which fields acts on the beam from gun 3 whilst the other influences the beams from guns 5, 7. The magnetic fields are shaped by a soft ferromagnetic yoke 13 and by two field conductors fastened to a non-magnetic supporting strip 15. The yoke 13 is substantially in the form of a U of strip material having a base and ends directed inwardly towards guns 5, 7 to meet the tube neck 1 tangentially. The field conductors are symmetrically placed either side of gun 3 with a portion 19 parallel to the base of the yoke and affixed to the strip 15 and a portion 17 extending tangentially along the tube neck. The two permanent magnets 23 are held adjacent the portions 19 in magnet support 21 between the base of the yoke and strip 15 and are magnetized at right angles to the longitudinal axis of the support 21. With a portion 25 of the yoke base extending inwardly towards gun 3 and ferromagnetic gun support ing members 9, the field produced is as indicated in the Figure and its strength may be varied uniformly by rotating the support 21 about its longitudinal axis. Periodic displacements of the electron beams may be produced by either a coil 39, influencing beam from gun 3 only, or two coils 41, affecting all beams, to provide for dynamic convergence.
Patent GB-527663-A (GB)
Title: An improved gauge or measuring instrument
IPC: G01B5/06
Filed: 1939-04-18
Abstract: 527,663. Gauging-apparatus. EXON, E. W. April 18, 1939, No. 11708. [Class 106 (ii)] Comprises a particular construction of three-point contact gauge for measuring the thickness of a fillet of material at the junction of two angularly disposed surfaces welded together. A curved yoke member 1 is provided with a curved groove 2 in each side face struck from the centre formed by the common meeting point of two outer limbs 5, 5a and a central leg 12. The leg 12 forms part of a micrometer 4 while the outer limbs 5, 5a are, as shown, at right angles and are mounted in carriers 6, 6a each of which is provided with a pair of arcuate arms 7, 7a which engage the grooves 2. Locking nuts 8 secure each arm in adjusted position. The limbs are constituted by bars mounted in undercut grooves 9, 9a and have graduations on the outer surface by which the distance of the end from the common meeting point may be read off. Angular scales 3 are provided on the yoke 1. In use, the micrometer is screwed back and the limbs drawn back and set to the angle of the plates. The limbs 5, 5a are now adjusted to touch the legs of the fillet and the micrometer screwed down to the throat. The readings of the scales on the legs are taken and the longer adjusted to agree with the shorter. The instrument is now placed so that the points of the limbs rest on a plane surface and the micrometer screwed down. The reading of the micrometer is then compared with its first reading to give the thickness at the throat.
Patent GB-369771-A (GB)
Title: Improvements relating to rib-fronts for domestic fireplaces
IPC: F24B1/192
Filed: 1931-04-21
Abstract: 369,771. Open fireplaces. DALLAS, J., Glenloy, Newburgh Road, Wormit, Fife. April 21, 1931, No. 11737. [Class 126.] Grates.-In a front grate for domestic fireplaces of the kind comprising upper and lower bars 1, 2 connected by spaced vertical ribs 3, the lower bar 2 is united to the ribs 3 along their front faces 4 only, so as to leave spaces 5 between the lower ends of the ribs for the free downward passage of ashes &c.
Patent GB-550363-A (GB)
Title: An improved type of signal arm
IPC: B63B45/00
Filed: 1941-09-15
Abstract: 550,363. Railway signals. HAYWOOD, T. E., HAYWOOD, T. A. E., HAYWOOD, J. T., and HAYWOOD, P. F. Sept. 15, 1941, No. 11767. [Class 105] [Also in Group XXXVIII] An arm for a semaphore signal comprises a panel 1 of relatively thin metal sheet reinforced by a thin metal strip 2 along its edges which forms flanges around, and projecting from, both faces of, the panel. The width of the strip increases gradually from the outer end of the arm to the fulcrum portion, and additional stiffness may be obtainedby forming one ormore narrow and shallow corrugations 5 along the panel. The arm is intended particularly for use as a ship's semaphore, and it is counterbalanced by a mass of lead 17 poured into a pocket formed at the end of the arm by splaying out two plates 6 which are riveted to one another at the inner end of the panel 1. The plates 6 also carry the fulcrum pin 13 by its base plate 14 being bolted to them. Parts B, W of the panel are painted black and white respectively, with the white sections W pierced with holes 21 to reduce wind pressure. The construction may be used for the arms of railway signals.
Patent GB-117714-A (GB)
IPC: B63G9/00
Abstract: 117,714. Foy, W. C. Aug. 28, 1917. Torpedo screens.-For warding off torpedoes, a number of endless travelling wires, cables, or ropes c passing over pulleys b, surround the ship. The upper shafts c carrying the pulleys b are mounted in spring-pressed arms d, while the lower shafts have ball and socket points f<1> in the keel. The wires may be guided along their inner stretch by casings attached to the ship. At the bow and stern half the wires run in one direction and half in the other. To destroy the torpedo after it has been deflected by the traveling screen, cutters i are mounted between the wires and the hull. To indicate when the screen has been struck by a torpedo, the spring-controlled arms d carry electric contacts j adapted to close a circuit through contacts j<1> and so expose or produce a light; or bell-crank levers k, k<1> and cords passing over pulleys may be used for the same purpose.
Patent GB-387549-A (GB)
Title: Improvements in photo-machine guns with driving device controlled by a windmill
IPC: F41A33/00
Filed: 1932-04-25
Abstract: 387,549. Targetpractice kinematograph. NISTRI, U., 11, Via Francesco Negri, Rome. April 25, 1932, No. 11773. Convention date, April 28, 1931. [Class 119.] Relates to kinematographic cameras for target firing practice from aircraft of the kind in which the film is driven by a small air propeller, and consists mainly in mounting the air propeller or windmill 5, Fig. 1, directly upon the camera A, conveniently in a rear chamber 12 provided with a hood, which causes the air to flow past the windmill in the direction of the arrows Z. The windmill is connected through suitable gearing 7 and a system of coiled springs 8, Fig. 2, to a shaft 4 for operating the kinematographic mechanism 3 ; and a centrifugal governor 11 is provided, which, in conjunction with the action of the springs 8, tends to maintain a constant speed of operation. A clutch 9 under control of the pilot is provided in the shafting 4. The view is photographed by means of an objective 6 with a hair-cross determining the line of sight; and simultaneously, a photograph is made of the dial of a chronometer 1 by means of an optical system 2.