baber/WOPTO huggingface dataset:
Patent GB-748364-A (GB)
Title: Improvements relating to the testing of change of angular velocity
Inventor: BUSWELL ROBERT EDMUND
IPC: G01P1/12
Filed: 1953-08-14
Abstract: 748,364. Recording acceleration. WESTERN MANUFACTURING (READING), Ltd. Nov. 10, 1954 [Aug. 14, 1953], No. 22510/53. Class 106 (4). A method of recording the the change in angular velocity of a rotating body, for example the rotor of a motor 5, consists in exposing a photo-sensitive strip 71 displaced at constant velocity to a ray of light which is interrupted periodically in synchronism with the rotation of the body, the strip when developed, Fig. 7, recording the change in angular velocity. The method can be used for testing the braking efficiency of motors the brakes of which are applied automatically when the power is cut off. A housing 2 contains driving means for a drum 1 for the photo-sensitive strip. Light from a lamp 6 is reflected by a mirror 63 through an apertured shutter 59 operated by a switch 8 which also controls the power to the motor, and from a mirror 9 through an aperture 4 in a screen 3 to a screen 11 rotating on an extension of the rotor shaft 10 and having an aperture through which light passes by means of a slit in a plate at the inner end of the tube 20 to the photo-sensitive strip. To obtain a record of the change in angular velocity of the rotor from the application of the brakes to its stationary position or on acceleration from rest, the driving means, which is running constantly is coupled temporarily to the drum 1 by clutch means which, after a short period of engagement to ensure constant angular velocity of the drum operates the switch 8 which simultaneously cuts off or applies the motor power and operates the shutter 59 to allow light to pass to the mirror 9. As the angular velocity of the motor, and so of the aperture in the screen 11 changes the sensitized paper is exposed to form marking which on development are as in Fig. 7. The mirror 9 and screen 11 may be replaced by a member 66, Fig. 6, mounted on the end of the motor shaft 10. A cylindrical screen 69 has a slot 70 through which light passes to a mirror 68 set at 45 degrees to the shaft axis which is aligned with the centre of the drum 1 so that once in each revolution light from the fixed mirror 63 passes through the slot 70 and is reflected into the tube 20.
Patent GB-520725-A (GB)
Title: Improvements in or relating to apparatus for drying fabrics and yarns
IPC: D06C7/00
Filed: 1938-07-30
Abstract: 520,725. Drying fabric webs and yarns. HIBBERT & CO., Ltd., J., and HIBBERT H. July 30, 1938, No. 22713. [Class 34 (i)] In the drying of fabric webs or "sheets" of yarns in drying chambers 8 superimposed above a chamber containing pre-heaters 11, a fan 10 and main heaters 12 from which heated air is directed therethrough, the material at its exit from the drying chamber is cooled by passage through an open-ended casing or tunnel 18 by contact with fresh air drawn therethrough by the fan, the casing 18 and the pre-heaters 11 being in communication by a throat-piece 19. A damper in the throat-piece is automatically controlled by a thermostat or humidistat located in the upper part of the drying chamber operating the damper through an electric motor.
Patent GB-1151193-A (GB)
Title: Improvements in or relating to Electromagnetic Disc Brakes for Electric Motors
IPC: F16D55/227
Filed: 1966-05-23
Abstract: 1,151,193. Disc brakes. VERLINDE S.A. 23 May, 1966 [21 May, 1965; 29 Dec., 1965], No. 22831/66. Heading F2E. In a spring-applied, electromagneticallyreleased spot-type disc brake for electric motors in which first (1) and second (2) pressure plates carrying friction pads are adapted to engage a disc 5, the air gap a between the second pressureplate 2 and the electromagnet casing 19 is kept constant as the friction pads wear and are so controlled that each moves by a distance ¢a as determined by the position of stop-nuts 22. The degree of spring application is adjustable by adjusting screws 17 which bear on brake applying springs 15 and the electromagnet for releasing the brake is housed in a yoke member 12 situated in the electromagnet casing 19. The springs 15 urge the second pressure-plate 2, carrying a friction-pad 4, against one face of the brake disc 5 and the reaction on the guide-rods 7, slidable in a fixed support 9, urges the other pressure-plate 1, carrying a friction pad 3, against the opposite face of the disc. In order to regulate the air gap to counteract wear, one or more spacing washers 24 may be removed and at the same time an equal amount of washers 11 is removed to maintain the gap a. In a modification (Fig. 3 not shown) the adjustable limits are set by sleeve members which are screwed on to threaded parts of the guide-rods and which are flanged to limit the movement of the second pressure-plate which is journalled on said sleeves.
Patent GB-366447-A (GB)
Title: Improvements in fuel vapourizers or carburettors
IPC: F02M1/00
Filed: 1930-07-29
Abstract: 366,447. Spray carburetters. HOFMANN, H., 1, Dresdner Strasse, Leipsic, Germany. July 29, 1930, No. 22851. Convention date, July 30, 1929. Void [Published under Sect. 91 of the Acts]. [Class 7 (iii).] To control the fuel supply to a carburetter, a suction-actuated valve comprising a piston b and oppositely-disposed faces c, d is housed in a casing a. The casing is connected to the carburetter through a duct k, and liquid fuel which enters by a passage m traverses ducts g, l leading to a spraying-nozzle. When the engine stops, a spring h raises the piston b to cut off the fuel supply to the duct g.
Patent GB-1470804-A (GB)
Title: Method for fabrucating semiconductor devices utilizing compo site masking
IPC: H01L23/29
Filed: 1974-05-22
Abstract: 1470804 Semi-conductor devices TEXAS INSTRUMENTS Inc 22 May 1974 [29 May 1973] 22884/74 Heading H1K A diffusion mask is formed on a semiconductor substrate 10 by forming thereon a first SiO 2  layer 20, Fig. 6, a second Si 3 N 4  layer 22 and a third SiO 2  layer 24, this layer 24 preferably being an order of magnitude thinner than the layers 20, 22, then the layer 24 is selectively apertured to expose portions of layer 22 which are subsequently removed, the thus exposed regions of the first layer 20 also being removed. The diffusion mask thus formed is then covered with an Si 3 N 4  layer on top of which is an SiO 2  layer, these additional layers being selectively apertured to expose only a first set of the apertures in the diffusion mask, for example to permit to diffusion of isolation regions in an integrated circuit. The remainder of these additional layers is removed to be replaced by a similar pair of additional layers which are differently selectively apertured to expose only a second, different, set of apertures in the diffusion mask, for example to permit the diffusion of a base region of a transistor or a resistor in the integrated circuit. The completed, isolated transistor and resistor is shown in the integrated circuit of Fig. 9.
Patent GB-1000078-A (GB)
Title: Diagnostic device for the detection and location of sites of internal anatomical abnormalities
Inventor: NISSENBAUM GERALD
IPC: A61M25/01
Filed: 1964-06-03
Abstract: 1,000,078. Diagnostic device. DIAGNOSTO ASSOCIATES Ltd. June 3, 1964, No. 22909/ 64. Heading A5R. A diagnostic device for the detection and location of internal anatomical abnormalities, such as blood discharge, comprises an elongated member 10 proportioned so that it may be swallowed, the member carrying a number of radiopaque position indicating 14,15 and being provided with a removable sheath 21 of absorbent material. As described, the device comprises a tube 10 of flexible, elastic, and transparent plastics material in which is arranged a wire 11 graduated with marker blocks enclosing numerals 15 of lead, the tube being covered with a cotton sheath 21 held by elastic bands 22, 23. The device is provided with a weighted bag 20 containing mercury.
Patent GB-604742-A (GB)
Title: Process for applying optical layers to glass
IPC: C23C14/54
Filed: 1944-05-13
Abstract: The subject-matter of this Specification is substantially a combination of that described in Specifications 604,665, [Group XX], 604,666 and 604,741, [Group XX].
Patent GB-613834-A (GB)
Title: Improvements in and relating to the manufacture of vinyl esters or ethers and their homologues
Filed: 1945-09-06
Abstract: Vinyl esters and ethers are produced by reaction of acetylene or its homologues with carboxylic acids or alcohols using mercury compounds and boron fluoride as catalyst, one or more vinyl compounds, in quantities of about 3 per cent or less on the total reactants, being added to the reaction mixture or a component thereof before reaction begins.  Reaction product may be separated and added with the two catalysts to fresh reactants.  The boron fluoride may be used as a complex with acids, alcohols or ethers or mixtures of boric acid or oxide and hydrofluoric acid may be employed.  The addition of hydrofluoric acid to the catalysts increases their activity.  The acids reacted with the acetylene may be mono- or polycarboxylic and the alcohols mono- or polyhydric.  Acid esters may also be used.  In examples: (1) mercuric oxide is dissolved in anhydrous acetic acid, and boron fluoride, hydrogen fluoride and vinyl acetate added. Acetylene is introduced at 15-20 DEG  C. and the solution neutralized and distilled to recover vinyl acetate; (2) acetylene is introduced into a mixture of acetic acid, acetic anhydride, mercuric oxide, boric acid, hydrofluoric acid and vinyl butyrate; (3) a mixture of butyric acid with acetic anhydride, mercuric oxide, boron fluoride-acetic acid and vinyl butyrate is treated with acetylene to yield vinyl butyrate; (4) lauric acid mixed with acetic anhydride, hydrogen fluoride, boron fluoride-acetic acid, mercuric oxide and vinyl acetate is treated with acetylene at 40 DEG  C., giving vinyl laurate; (5) oxalic acid monoethyl ester is similarly converted to the vinyl derivative; (6) mercuric oxide is dissolved in a mixture of methanol, boron fluoride-ether and vinyl acetate, and a mixture of methanol and butylacetylene added, methyl a -butyl vinyl ether being recovered.
Patent GB-313803-A (GB)
Title: Improvements in or relating to steam superheaters, steam generators and other tubularheat exchange apparatus
IPC: F22G1/16
Filed: 1928-08-10
Abstract: 313,803. Superheater Co., Ltd., (Compagnie des Surchauffeurs). Aug. 10, 1928. Water-tube boilers; sinuous-tube superheaters. -A baffle in a tubulous steam generator, 'superheater, or like heat exchange apparatus consists of a number of U-tubes so arranged side by side that both legs of each U-tube form part of the baffle. Each of the tube elements of a superheater placed in a furnace chamber contains horizontal U-shaped loops 15 - - 18, which, when the elements are assembled side by side, form baffles, causing the furnace gases to take a sinuous course through the chamber to the outlet 22. The, area of the gas passage in the chamber progressively decreases towards the outlet. The elements are supported by brackets 24 on the walls of the furnace chamber. The fluid circulating through the U-tubes forming the baffles may be different from that. in the tubes about which the baffles direct the flow of the heating gases.
Patent GB-334028-A (GB)
Title: Improvements in and relating to devices for supplying current to thermionic valves from supply mains
IPC: G05F1/607
Filed: 1929-07-27
Abstract: 334,028. Brantom, H., Williams, H. G. Bawtree-, Bitton, E. A., and Storry, Ltd., H. A. July 27, 1929. Converting pulsating currents into steady continuous currents.-A steady current suitable for feeding thermionic valve circuits is obtained from a source of pulsating current a by providing a tapped potential divider b with a bye-pass device comprising a thermionic valve c the anode of which is connected to a point on the potential divider beyond the tappings from which steady current is required, and the grid being connected to a point of lower voltage on the potential divider. Condensers a may be connected between the negative lead and the anode and grid, and a smoothing arrangement e of usual type may be added to the arrangement. Where the potential divider is provided with several tappings, a regulator valve may be provided for each tapping.
Patent GB-1200162-A (GB)
Title: Improvements in blades for screw-propellers and lifting rotors
Inventor: BRIDGLAND ROBERT FILMER
IPC: B63H1/28
Filed: 1966-05-24
Abstract: 1,200,162. Screw-propellers. R. F. BRIDGLAND, P. MARRIAGE and S. W. BROWN. 4 Aug., 1967 [24 May, 1966], No. 23150/66. Heading B7V. [Also in Division F2] A blade 2 for either a marine, or aircraft, screw-propeller or a helicopter lifting-rotor is hollow and has perforations 7 or slots in the leading surface so that owing to an opening 9 at the tip fluid in the boundary layer is sucked away by centrifugal action. Optionally, either the blade is curved longitudinally in a direction opposite to the axial thrust produced by the propeller, or rotor, or fins are provided in the opening 9 such that additional axial-thrust is developed in exchange for energy in the fluid approaching the opening.
Patent GB-1103376-A (GB)
Title: Improved modulus rubber latex and uses
IPC: C08F36/04
Filed: 1965-05-31
Abstract: A resin-reinforced rubber latex is made by polymerizing monomers in emulsion, adding a resinous latex to the monomer emulsion when the monomer has undergone between 10 and 40% conversion to polymer, polymerizing the monomers to at least 45% conversion, agitating the latex particles to cause agglomeration thereof and a decrease in the surface tension, and removing unreacted monomer from the agglomerated latex.  The monomers are preferably butadiene and styrene and the resin added is polystyrene or a high styrene-butadiene copolymer. The latices are suitable for foaming by frothing.
Patent GB-391662-A (GB)
Title: Improvements in and relating to the manufacture of refractory substances
IPC: C04B35/44
Filed: 1932-08-18
Abstract: A refractory material for producing blocks or bricks by casting has as its principal constituent magnesia spinel crystals MgO, R2O3, in which R2O3 is Al2O3 or in part Al2O3 and in part another sesquioxide, such as Cr2O3 in the proportion of less than 10 per cent of the alumina; the material also contains 8-40 per cent of silicates, titanates, or calcium aluminates melting more easily than spinels, the magnesium oxide and calcium oxide content of these more easily melting constituents being only small or alternatively amounting to more than 45 per cent and the proportion of lime and iron oxide being not more than 8 per cent of the whole.  The amount of aluminium is regulated so that it does not exceed the amount which would be present in 100 per cent spinel formation.  Up to 10 per cent of other oxides such as FeO, MnO, and BeO may be substituted for magnesia. The product may be cast in the required form, or may be granulated after cooling and formed into blocks by the use of binders such as chromite or magnesite; the use of clay is to be avoided.  The preferred method of manufacture is to melt in an electric furnace a charge consisting of magnesite and bauxite.  Lime or dolomite, silica, rutil, and pyrolusite may also be present.  Any excess of iron is removed by reduction during the melting process. Specifications 302,087, 324,312, [both in Class 22, Cements &c.], 343,896, and 371,905 are referred to.
Patent GB-1300023-A (GB)
Title: Tractor-driven lawn mower
Inventor: AKGULIAN SAHAG C
IPC: A01D34/43
Filed: 1971-04-19
Abstract: 1300023 Gang lawn mower JACOBSEN MFG CO 19 April 1971 [9 April 1970] 23262/ 71 Heading A1F The subject matter of this Specification is identical with that described in Specification 1300021, but the claims are concerned with the construction of the individual mowers attached to the tractor.
Patent GB-149988-A (GB)
Title: A process for the manufacture of cement from slag
IPC: C04B7/14
Filed: 1920-08-09
Abstract: 149,988. Boveroulle, R. Aug. 7, 1919, [Convention date]. Slag cements.-In making cement from slag by the cold process, lime dross, consisting of the residue of the lime which has passed through the grids beneath the kilns together with ashes of the fuel employed, is mixed with granulated slag.
Patent GB-241536-A (GB)
Title: An improved process for the manufacture of cellulose of all kinds of low viscosity
IPC: C08B1/08
Filed: 1925-09-18
Abstract: Cellulose of low viscosity characteristics is obtained without adversely affecting its chemical properties, by treatment with small amounts of alkaline substances such as caustic soda, hydroxides of the alkaline earths, magnesium hydroxide, carbonates, bicarbonates, water glass and sodium acetate, in combination with the usual oxidizing-agents such as hypochlorites and peroxides.  In an example, Mitscherlich cellulose is treated with a dilute solution of caustic soda and sodium or calcium hypochlorite.
Patent GB-316783-A (GB)
Title: A method and apparatus for regulating the temperature of the fuel mixture, the composition of the mixture and the cooling in internal combustion engines
IPC: F02M1/00
Filed: 1928-08-13
Abstract: 316,783. Szal, J., and Panstwowe Zaklady Lotnicze. Aug. 13, 1928. Spray carburettors.-The temperature and the composition of the combustible mixture are varied, in accordance with the altitude, by the variation of the pressure in the cylinder at a definite point in the cycle of the engine. This is effected by a rotating sleeve valve 4, or a disc, or a reciprocating piston, which connects a lagged pipe 1, from the cylinder, to a pressure chamber 7, containing a piston, on the opposite side of which is a chamber 9, filled with oil, and connected by pipes 10, 11, 12 to the elements to be controlled; the sleeve-valve 4 may be mounted on the head of an auxiliary cylinder used solely for producing the pressure. The pipe 10 leads to a cylinder containing a spring- pressed plunger 13 which operates a valve 17 controlling the flow of the exhaust from a pipe 18 to pipes 19, 20 leading respectively to a heating jacket on the carburettor, and to the atmosphere. The pipe 12 leads to a cylinder containing a plunger 40, Fig. 6, movement of which unscrews a cap 43, and thus lifts a fuel valve 45, having triangular grooves 46, in the float-chamber of the carburettor.
Patent GB-1235692-A (GB)
Title: Improvements relating to smoking articles
Inventor: HUGHES IVOR WALLACE
IPC: A24B15/16
Filed: 1968-11-16
Abstract: 1,235,692. C i g a r e t t e s . BRITISHAMERICAN TOBACCO CO. Ltd. 5 Nov., 1969 [16 Nov., 1968], No. 23379/68. Heading A2C. [Also in Division D2] The wrapper of a smoking article such as a cigarette is treated, non-uniformly upon its surface, with sodium or potassium chlorate to accelerate the rate of burning of the treated areas during smoking. The chlorate may be applied as a solution in a volatile liquid, such as water, by an embossing or printing operation either alone or mixed with a dye. ink, or bronze powder. The chlorate may be applied so as to form rows of overlapping short streaks or longitudinal streaks, preferably with the length or width of the streaks increasing towards the mouthpiece end of the cigarette, or applied as spots or random lattice patterns, and may be applied to the wrapper before, during, or after cigarette manufacture. The accelerated burning of parts of the wrapper causes air to be introduced into the smoke stream from points behind the burning end of the cigarette.
Patent GB-1146156-A (GB)
Title: Stud welding
Inventor: MASON GUY
IPC: B23K9/20
Filed: 1966-05-26
Abstract: 1,146,156. Stud welding circuits. HIRST WELDING RECTIFIERS Ltd. 24 May, 1967 [26 May, 1966], No. 23593/66. Heading H2H. A stud welding timing circuit is arranged to terminate the welding current prematurely if the current is outside of say Œ 10% of a selected value. The potential across a series resistor 9 is applied to an amplifier 28, the output of which is fed through a lead 52 to a transistor circuit 29 which energizes one of lamps 58, 61, 64 and terminates the welding current at the end of a determined time or immediately if the current is low or high through relays connected thereto. In a modification relays (RLG), (RLH), (Fig. 2, not shown) in parallel with lamps 58, 64 vary the welding voltage appropriately each time a weld is terminated prematurely. The welding time may be adjusted inversely with the current by means of a switch S, which in its reversed position selects from a transistor T5 a voltage varying with the current hence varying the charging time of a capacitor 46. In this case the current tolerance may be widened to Œ20% of the selected value.
Patent GB-1087052-A (GB)
Title: Manufacture of 1,1'-alkylene-2,2'-bipyridylium salts
Inventor: SHEPHARD CHARLES
IPC: C07D471/14
Filed: 1964-06-08
Abstract: A 1,11 - alkylene - 2,21 - bipyridylium di-halide is obtained by reacting 2,21-bipyridyl and a strain chain mono-haloalkanol wherein an atom of chlorine or bromine and a hydroxyl group are attached to adjacent carbon atoms in the carbon chain and either the chlorine or bromine or the hydroxyl group is attached to a terminal carbon atom of the carbon chain. Suitable haloalkanols include mono-bromo (or -chloro) alkanols containing from 2 to 5 carbon atoms in the chain. The reaction may be carried out by heating the reactants, e.g. at 130-170 DEG  C., and a solvent may be present, e.g. water, an alcohol, ether, nitrohydrocarbon, e.g. nitrobenzene, hydrocarbon or chlorinated hydrocarbon or an excess of the haloalkanol reactant may be used as solvent.  Elevated pressure may be used.  Examples are given for the production of 1,11-ethylene-2,21-bipyridylium-and 1,11-(1,2-propylene)-2,21-bipyridylium dichlorides.
Patent GB-681999-A (GB)
Title: Improvements in or relating to electrodes for galvanic cells
IPC: H01M4/02
Filed: 1949-09-14
Abstract: 681,999. Accumulators. INTERNATIONAL CO. FOR INDUSTRIAL EXPLOITATION SOC. ANON. Sept. 14, 1949 [Sept. 14, 1948], No. 23766/49. Class 53. An accumulator plate comprises a mass of loosely-connected glass or other fibres which are coated with metal to render them conductive. A frame and cross-bars may be formed by compressing the plate between dies. In a modification the fibrous mass is mounted in a separate frame made from a synthetic material. The metal with which the fibres are coated may be cadmium, tin, antimony or alloys of these metals and the metals may be deposited electrolytically or from the vapour of the metal and the completed electrode may be provided with a protective coating of silica gel or other colloid. Fig. 1 shows an apparatus for forming frames and ribs on a band 2 of metal coated fibres drawn from a reel 1. The band is passed between heated dies having ribs 8 which form the frame and cross-bars of each electrode when the dies are brought together. The dies are heated by devices 10 and an inert gas is introduced through openings 12, 13 and passes out through openings 14. Each side of the band 2 is provided with a protective fabric band drawn from reels 7. These bands prevent the band 2 from sticking to the ribs 8 of the pressing tools. Fig. 2 shows a part of the band 2 with the protective bands 6a, 6b before being passed through the pressing apparatus. The part of Fig. 2 to the right of the line AA shows the band after the edges 16 and cross-pieces 9 have been compressed to a greater density to form the frame. Specification 677,016 is referred to.