baber/WOPTO huggingface dataset:
Patent GB-385648-A (GB)
Title: Improvements in or relating to permanent magnets
IPC: H04R9/02
Filed: 1931-07-11
Abstract: 385,648. Magnets. SWIFT, LEVICK, & SONS, Ltd., HORSBURGH, G. D. L., LEVICK, H. S., Clarence Steel Works, and DARWINS, Ltd., Fitzwilliam Works, Templeborough, both in Sheffield. July 11, 1931, No. 20003. [Class 35.] The body portion of a permanent magnet for sound reproducing and recording and like apparatus having one or more loop-like limbs and an annular air gap is formed in two or more portions, the junction preferably occurring near the neutral magnetic point. The Figures show a magnet of the form described in Specification 340,207 having four loop-like limbs connected by a circular web 10, and a central soft iron polepiece 9, such as that described in Specification 351,560. The magnet body is formed in two parts 6, 7, the portions of the limbs at the junction 8 being connected by webs 11, 12. The portions of the limbs extending from the web 11 to the web 10 are slightly tapered. The webs 11, 12 are secured together by molten metal poured into dovetail slots in the webs. The junction 8 is preferably in the plane of the surface which receives the polepiece 9 to facilitate machining. An outer soft iron polepiece may be provided. The application of the invention to " twoclaw " magnets and horseshoe magnets is also described. Specification 368,763 also is referred to.
Patent GB-1351864-A (GB)
Title: Process and installation for obtaining deuterium
IPC: C01B4/00
Filed: 1971-04-19
Abstract: 1351864 Deuterium; heavy water L'AIR LIQUIDE SOC ANON POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE 19 April 1971 [27 Jan 1970] 20058/71 Heading C1A D 2  and D 2 O are prepared by (a) oxidizing a metal, e.g. Fe at 400-800 C., with steam to obtain a gaseous mixture of D 2 -enriched H 2  and steam, (b) condensing the steam from the mixture and recycling a part of the H 2 O to the oxidation step (a), (c) removing D 2  from a part of the remaining H 2 , (d) and then regenerating the oxidized metal with the resulting D 2 - depleted H 2 . The other part of the D 2 -enriched H 2  from the oxidation step (a) may be admixed with the steam used to oxidize the metal. Condensed steam and D 2 -depleted H 2  from the regeneration step (d) may be recycled and used for further regeneration.
Patent GB-441980-A (GB)
Title: Shutter release for photographic cameras
IPC: G03B9/58
Filed: 1935-07-13
Abstract: 441,980. Photographic shutters. VOIGTLANDER & SOHN AKT.-GES., 7, Campestrasse, Brunswick, Germany. July 13, 1935, No. 20068. Convention date, July 14, 1934. [Class 98 (i)] The shutter release for a folding camera has its operating mechanism mounted on the baseboard and the operating member close to the camera casing so that it can be engaged by the finger of the person holding the camera. The camera comprises a casing a, a baseboard b hinged thereto, a lens support d and shutter e. Adjacent the release lever f of the shutter e is an upstanding finger h<3> attached to a rigid lever h<1>, h<2> pivoted to the baseboard at g. To the lever h<1>, h<2> is hinged an operating lever i with an upturned end il and controlled by a spring m. When the camera is open, the finger piece i<1> is close to the casing and can readily be operated to move the exposure lever f. When the camera is folded, the finger piece i<1> serves to lock the release mechanism in position by bearing on the outer wall of the camera.
Patent GB-659673-A (GB)
Title: Improvements relating to the heating of electric motors while the machines are inoperative
IPC: H02K15/12
Filed: 1949-08-02
Abstract: 659,673. Dynamo - electric machines. BRITISH-THOMSON HOUSTON CO., Ltd. Aug. 2, 1949, No. 20113. Convention date, Aug. 2, 1948. [Class 35] The armature 2 of an electric motor is preheated to aid starting under conditions of extreme cold. The contacts 10 of a thermal switch are closed below a predetermined low temperature, and, when main supply switch 8<SP>1</SP> is closed, heating-current is supplied to the armature through bimetallic strip 15 and current-limiting resistor 11. The contacts 10 are short-circuited when either of the reversing switches 5, 6 are closed. When the thermal switch is mounted within the motor casing its contacts are opened at a given temperature, so preventing wastage of heat. The resistor 11 may be adjustable to suit different types of motor, it being pre-set to the minimum value preventing increase above the rated temperature of the motor at an ambient temperature of 70‹ F.
Patent GB-596932-A (GB)
Title: Improvements in domestic water-heaters or boilers
IPC: F24H1/46
Filed: 1945-08-04
Abstract: 596,932. Domestic firegrates. DUNN, W. E. Aug. 4, 1945, No. 20114. [Class 126] A domestic water heater has a combustion space or solid fuel compartment surrounded by a water chamber and, at or near its upper end, is provided with two filling apertures or passages, one at or adjacent the front of the water heater, and the other at or adjacent the rear of the water heater, or at one side. The invention is shown applied to combined water heaters and open fireplaces of the type disclosed in Specifications 578,581 and 581,301, in which the water heater 1 is fed from the aperture 11 in one room 4 over the shoot-forming damper 10, or from the aperture 13 in another room 5 which may be heated by the boiler.
Patent GB-516780-A (GB)
Title: Improvements in or relating to method of preparing alkylated hydrocarbons from normal paraffinic hydrocarbons
IPC: C10G65/04
Filed: 1938-07-07
Abstract: 516,780. Hydrocarbons. TEXACO DEVELOPMENT CORPORATION. July 7, 1938, No. 20123. Convention date, July 24, 1937. [Class 2 (iii)] Hydrocarbons of high anti-knock properties are made by partially converting butane to isobutane by treatment with a halide of aluminium, chromium or iron (or hydrocarbon compounds thereof) and then alkylating the product by reacting it with an olefine in the presence of sulphuric or phosphoric acid, the unreacted materials being recycled to the isomerization stage. Suitable olefines range from gaseous olefines to those boiling up to the kerosene range, including cracking products, polymer gasoline and dibutylene and diisobutylene, but preferably a C4 fraction obtained by cracking is used. In an example, butane is treated with 10 per cent. of aluminium. bromide and the distillate from the product containing about 50 per cent. of isobutane is reacted with a C4 fraction of about 40 per cent. unsaturation in quantity about equivalent quantity to the isobutane in the presence of 94 per cent. sulphuric acid at 75-85‹F. After separation of the liquid hydrocarbons the unreacted portion is recycled. Specifications 479,345, 479,827 and 498,512 are referred to. The Specification as open to inspection under Sect. 91 is not limited to the particular catalysts stated.
Patent GB-499734-A (GB)
Title: Improvements in and relating to carburation devices for internal combustion engines
IPC: F02M7/12
Filed: 1938-07-07
Abstract: 499,734. Spray carburetters. SOC. ANON. SOLEX. July 7, 1938, No. 20140. Convention date, Dec. 2, 1937. [Class 7 (iii)] The height of the fuel level at a selected point in the constant level chamber determines the bringing into and out of action of means for enriching the combustible mixture, the height itself being a function of the inclination of the carburetter. A small compartment 10 in the float chamber 3 supplies fuel through a stand pipe 12 to an auxiliary nozzle 14 when the carburetter is inclined and the fuel level thereby raised above the top of the stand pipe, the compartment being supplied through a calibrated orifice 11 in a partition 9 separating the compartment 10 from the float chamber 3. To ensure that the nozzle 14 operates only when the main nozzle 4 is operating fully, a valve 16 in a passage 13 connecting the pipe 10 and nozzle 14 is controlled by a diaphragm &c. 19 subject to the pressures above and below the throttle valve 2 and allowance for variation in atmospheric pressure is made by a capsule 26, in the air or mixture passage, actuating vaves 24, 28 in the main and auxiliary fuel passages. The pipe 10 may extend some distance above the fuel level and be perforated thereabove and the auxiliary fuel may be fed into the main nozzle, the nozzle 14 being omitted. In further modifications, a separate float valve 32, Fig. 5, controls the inlet 31 to the stand pipe which is wholly submerged or a similar float in a separate fuel chamber actuates a valve controlling the admission of aerating air to the main nozzle. The valve 16 may be controlled by hand independently or in conjunction with the throttle valve 2.
Patent GB-1466372-A (GB)
Title: Electrical terminal
IPC: H01B17/26
Filed: 1974-05-07
Abstract: 1466372 Carrying conductors into casings ALSTHOM-SAVOISIENNE 7 May 1974 [10 May 1973] 20170/74 Headings H2C and H2E A lead through terminal, particularly for high voltage transformers, has a metallic output part 15 which has a shoulder 16 on which a seal 17 is placed and which is pulled up to the inside face of the head 18 of an epoxy resin insulator by locking pins 22. The pins may pass through oversized holes 21 in lugs 20 which rest on the outside of the insulator and also through holes 19 in the output part 15, being pulled up by other screws (not shown) passing through the top of the lugs into threaded holes 24 in the pins 22. An extra shoulder 26 may be provided on the output part to prevent over-compression of the seal. The lugs may be of a metal such as aluminium. A degassing hole (27, Fig. 4, not shown) may be provided in the insulator body. The insulator is preferably made of a mixture of Araldite (Registered Trade Mark) and cycloaliphatic Araldite (Registered Trade Mark).
Patent GB-1280223-A (GB)
Title: Preparation of nitrosyl chloride
Inventor: COLEBOURNE NEVILLE
IPC: C01B21/084
Filed: 1969-04-21
Abstract: 1280223 Nitrosyl chloride; nitrates; chlorine IMPERIAL CHEMICAL INDUSTRIES Ltd 23 March 1970 [21 April 1969] 20268/69 Heading C1A NOCl is prepared by reacting NO 2  and HCl in the presence of 65-75% w/w HNO 3 . The reaction mixture may also contain a metal (e.g. Na, K, or Ca) or ammonium chloride such that the mole ratio of HCl : MCl is 1 : 9 to 9 : 1. The reaction is preferably carried out at less than 50‹ C. In a cyclic process the NOCl may be oxidized to NO 2  and Cl 2  or thermally decomposed to NOOCl 2 , and the NO 2  recycled or the NO oxidized and recycled, whilst the Cl 2  may be used to chlorinate ethylene to 1 : 2- dichloro ethane which may then be cracked to give vinyl chloride and HCl, the HCl being recycled to the NOCl synthesis. When the NOCl is thermally decomposed, chlorination may take place either before or after separation of NO and Cl 2 . The NO 2  and HCl may be used in any convenient liquid or gaseous form, and the NO 2  may be formed in situ from NO and O 2  or alternatively nitrogen trioxide (NO+NO 2 ) may be used, with or without O 2 .
Patent GB-425740-A (GB)
Title: Expansible lock nut
IPC: F16B39/286
Filed: 1934-07-10
Abstract: 425,740. Lock-nuts. BOURDON DE LAUNAY, M., Le Quillio, Cotes du Nord, France. July 10, 1934, No. 20289. Convention date, July 10, 1933. [Class 89 (i)] A lock-nut is formed from wire 1, preferably of trapezoidal section, coiled on a mandrel to form a tube and is formed on a middle portion with a circular groove between the ends 2, 3 which are cut with flats or are knurled. The tapped thread may be of opposite or the same hand as the turns of the coil, and the internal diameter slightly less than that of the screwed rod it has to engage. Screwing up and unscrewing are effected by application of the spanner to different ends respectively. Two such nuts with an interposed washer may be employed. An external sleeve may be fitted to prevent excessive spreading of the turns.
Patent GB-1167670-A (GB)
Title: Microporous Sheet Structures
Inventor: DIETERICH DIETER
IPC: C08J9/28
Filed: 1968-04-29
Abstract: 1,167,670. Microporous coatings. FARBENFABRIKEN BAYER A.G. 29 April, 1968 [28 April, 1967], No. 20294/68. Heading B2E. [Also in Divisions B5 and C3] Microporous coatings which are permeable to water vapour are prepared by subjecting to elevated temperature with concomitant shaping sedimenting and redispersible aqueous polyurethane (urea) dispersions or pastes obtained therefrom which cointain at least the following components in solid form, (A) 65 to 99% by weight of polyurethane (urea) microgel particles which are insoluble in methyl ethyl ketone and cannot on their own form homogeneous films at temperatures below 60‹C, which particles have an average minimum diameter of 2 to 500 Á and which contain on their surface reactive groups that are capable of reacting with a component B, (B) to 35% by weight of a polyfunctional, thermoplastic polymer containing at least two groups reactive with groups at the surface of A, for every 2000 molecular weight units, and/or a compound of M.W. of not more than 2000, which compound contains at least two groups reactive with group at the surface of A. The suspensions or pastes are advantageously applied to porous supports to form coated articles or alternatively they may be applied to non-porous supports from which they may be detached. The polyurethane (urea) microgel particles (A) may be made generally by the following three methods, by cross-linking latex particles (a) after dispersion, (b) simultaneously with dispersion thereof and (c) before dispersion. Particular details of all three methods are specified. The reactive component B may be a water-soluble thermoplastic polyurethane, a water dispersible polyurethane or polyurea, derivatives of formaldehyde or a substance that reacts in a similar manner as formaldehyde, a polyfunctional alkylating agent and/or a polyacid, a polyamine or polysulphide, a polyfunctional base, or a compound containing groups reactive with olefinic double bonds. The suspensions or pastes may be applied to porous or non porous supports and solidifies at 50 to 180‹C when the particles at the same time, sinter and intermesh mechanically or undergo partial fusion of the boundary surfaces, and a chemical cross-linking reaction takes place between the boundary surfaces of the particles. The porous support, which may be a woven or non-woven textile, fibre mat, felt or fleeces including paper fleeces, foam plastic sheetings or split leather, remain as part of the finished product. The microporous sheet is usually stripped from the non-porous support which may be of metal, glass, paper, cardboard, ceramic material, sheet steel, silicone rubber or aluminium foil.
Patent GB-758579-A (GB)
Title: Process for halogenating a metal
IPC: C01G30/00
Filed: 1954-07-12
Abstract: <PICT:0758579/III/1> A metal such as aluminium, antimony, bismuth, tin or zinc, which fuses at the temperature of halogenation and forms a volatile halide, is changed into a shaft having a lower inclined limb with a lower interior wall comprising a series of steps, melted in said shaft and allowed to flow down the steps, whilst an ascending current of halogen gas, with a carrier gas if desired, contacts the metal flowing down said steps so as to convert it completely to the halide which is withdrawn from the upper portion of the shaft.  The shaft and lower limb may if desired consist of or be lined with graphite, carbon blocks or sillimanite.  In the apparatus shown, aluminium granules are fed from hopper 1 into shaft 2 and after melting the metal passes into the limb 3 in which each of the steps has a groove 12 in the upper surface running parallel to its vertical face and formed by means of alternate long and short blocks 11 and 10 respectively.  A gas flame in a side limb 5 of a jacket 4 surrounding the reactor provides the necessary heat, and measured amounts of chlorine and nitrogen enter the apparatus through flow meters 13 and 14. Aluminium chloride and nitrogen are removed through outlet 16.
Patent GB-499452-A (GB)
Title: Improvements in or relating to electric discharge tubes
IPC: H01J5/54
Filed: 1938-07-09
Abstract: 499,452. Discharge apparatus. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. July 9, 1938, No. 20399. Convention date, July 12, 1937. [Class 39 (i)] A discharge tube 1 has at least one leading-in wire sealed into an outwardly projecting cylindrical or conical portion 6 of the envelope and connected, e.g. by welding, to a cylindrical or conical metal cap 9 which is clamped on the portion of the envelope. The device may comprise a doublewalled high pressure lamp and the nickel caps may be in contact, over a distance greater than half their length, with the projections.
Patent GB-355889-A (GB)
Title: Improvements in machines for pushing foundry mculds out of their boxes
IPC: B22C11/00
Filed: 1930-07-05
Abstract: 355,889. Moulding-machines. BRITISH INSULATED CABLES, Ltd., Prescot, and BULLOCK, T. W., Shirley, Warrington Road, Rainhill, both in Lancashire. July 5, 1930, No. 20421. [Class 83 (i).] A machine for assembling and pushing moulds out of their flasks 17, 18 is operated by an electromagnet or solenoid 5 and controlled by a dashpot 12 or the like. The mould halves to be assembled are placed the lower on a plate 1 and the upper so that projections 28 of its flask 18 rest on the forked ends 119, Fig. 3, of pillars 19, two of these projections 28 being kept down by latches 31 operated by a handle 38, mounted on one of the bridge-pieces 20 which connect the forks 119, and linkwork 35, 37, Fig. 1. The flasks are aligned by rods 22 engaging lugs 23, 24. The plate 1 is then raised by the core 4, which is connected to it by nonmagnetic material 3, so that it lifts the lower mould until it engages the upper and then pushes both moulds out of their flasks, the released flask 17 being supported by rods 25 and counterweights 27. In a modification the core 4 and dash-pot piston 14 are connected to the plate 1 through a lever.
Patent GB-1439583-A (GB)
Title: Calender more particularly for processing paper webs
IPC: D21G1/00
Filed: 1975-05-15
Abstract: 1439583 Calendering paper KLEINEWEFERS INDUSTRIE-COMPANIE GmbH 15 May 1975 [15 May 1974] 20560/75 Heading D2A In a calender for a paper web comprising a stack of superadjacent rolls (not shown) having journals 2 mounted in bearing housings 1, a longitudinally-movable suspension spindle 6 at each side of the stack, and a nut 8 associated with each bearing housing 1 and which can be adjusted along its associated spindle whereby the rolls can be raised or lowered when the spindles are moved, each nut 8 carries a support collar 13 relative to which the nut can rotate, a thrust collar 22 overlies the support collar, surrounds the associated spindle and is vertically movable relative to the support collar, and at least one (two as shown) fluid pressure operated cylinders and piston actuator 16, 17 acts vertically between the collars 13, 22 such that the thrust collar 22 can be raised to engage an overlying abutment 3 of the associated bearing housing 1 to relieve the roll of the load of the bearing housing.
Patent GB-237444-A (GB)
Title: Means for collectively lubricating a series of spindles or shafts
IPC: D01H7/20
Filed: 1924-09-02
Abstract: 237,444. Si�, J. S. Sept. 2, 1924. Baths. - A series of spinning or other spindles 5 project into or pass through a common lubricant chamber 2 having inlet and outlet orifices, whereby the spindles are collectively lubricated. The spindles are carried by bearings 3 on a member 1 to which the chamber 2 is attached. The spindles may have their ends journaled in the base of the chamber, or, as shown, thrust bearings 4, having apertures 6 allowing access of lubricant, may be provided. Several such chambers 2 may communicate with each other. Reference has been directed by the Comptroller to Specifications 4494/97, 1958/03, and 7921/04, [all in Class 120, Spinning].
Patent GB-649774-A (GB)
Title: Improvements in filtering media for use at elevated temperatures and in processes utilising the same
Inventor: RANSLEY CHARLES ERIC
IPC: B22F3/11
Filed: 1947-07-30
Abstract: In the carbothermic process for the preparation of magnesium, magnesium oxide is reduced by carbon and the mixture of magnesium vapour and carbon monoxide issuing from the furnace is quenched with cold hydrogen to prevent reversal of reaction.  The resulting product consisting of finely divided powder containing about 80 per cent magnesium is blown by a stream of hydrogen through a furnace chamber between 800 and 1100 DEG C. where volatalization of magnesium occurs, and this vapour is freed from carbon and magnesium oxide particles by passing it through a sintered tungsten or molybdenum filter (see Group XXVIII).
Patent GB-502937-A (GB)
Title: Improvements in fluid flow governors
IPC: G05D7/01
Filed: 1938-07-13
Abstract: 502,937. Pressure-regulating, valves. MILLS, G. D. July 13, 1938, No. 20714. Convention date, July 14, 1937. [Class 135] In pressure-regulating valves for gas, water, &c. the fluid passes from an inlet 19 past a lift valve 34 to a chamber below a weighted diaphragm 16 and thence to an outlet 20. The inlet and outlet passages are formed in a casting 18 bolted to the flange 15 of the casing 10, 11 containing the valve mechanism. The valve 34 is carried on a plate 33 moving on guide-pins 36 under the control of springs 35 and is actuated by an adjustable thrust-rod 31 pivoted by a pin 28 to the diaphragm stem 25 which is guided by a pair of links 29 connected at one end to the pivot-pin 28 and at the other to pins 30 secured in the casing adjacent the valve seat. A lid 39 is provided to permit the load on the diaphragm to be adjusted. A breather valve and port 37 may be arranged above the diaphragm, and the chamber below the diaphragm may have a relief valve.
Patent GB-384321-A (GB)
Title: Improvements relating to the extrusion of cellulosic plastic compositions
IPC: C08L1/00
Filed: 1931-03-02
Abstract: Cellulosic plastic compositions are extruded through a die of the required form, directly into an aqueous treating bath for the removal of the solvents.  The bath may contain an antiblushing agent, e.g. 20-40 per cent of alcohol, or salt, or sugar.  The concentration of the antiblushing agent is gradually reduced.  The process is described particularly with reference to the production of sheets for use in safety glass.