baber/WOPTO huggingface dataset:
Patent GB-409793-A (GB)
Title: Improvements in or relating to the production of road surfaces
IPC: E01C5/18
Filed: 1932-11-17
Abstract: 409,793. Roads; rubber-block paving. ST. ALBANS RUBBER CO., Ltd., Spencer House, South Place, London, and CAMPBELL, J. D., St. Albans Rubber Works, The Camp, St. Albans, Hertfordshire. Nov. 17, 1932, Nos. 32581/32 and 2161 /33. [Classes 87 (i) and 107.] A method of constructing a rubber roadway or pavement consists in forming a number of intercommunicating channels a in a concrete or like sublayer e, and capping the column - like members b formed between them with contiguous rubber caps c, the tops of which form the wearing surface. The channels, which need not form continuous lines, may intersect at any desired angle to produce regular or staggered rows of rectangular, hexagonal, or diamondshaped columns. According to one method, a wooden or metal framework or form, of a height equal to that of the columns to be formed, is placed on an unset layer of concrete and the spaces in the framework are filled with concrete. The framework is removed before the concrete is completely dry. The caps are fitted when the concrete has set and are provided with small vent holes for the escape of air during their assembly. Preferably, the inside height of the caps is slightly less than the height of the columns. In a modification, a lateral flange at the base of one side of each cap, fits beneath a shortened side of an adjacent cap. The tops of the caps may be plain or may be suitably moulded to provide a non-skid surface.
Patent GB-858934-A (GB)
Title: Furnace with rotary combustion chamber
IPC: F27B7/26
Filed: 1959-09-25
Abstract: 858,934. Charging rotary furnaces. SEPULCHRE, F. Sept. 25, 1959 [Oct. 14, 1958], No. 32612/59. Class 51 (2). An inclined rotary kiln 1 for burning lime, dolomite or cement raw materials has a vertical charging section 26 divided into two compartments by a partition 30, the compartment a nearer the highest point of the kiln containing material of finer grain than the other compartment b. The compartments a, b have separate hoppers and controls so that the finer material is at a higher level in compartment a than the material in compartment b. The charging section 26 is mounted on a carriage 31 running on a track 32 parallel to the axis of the kiln 1, so that it can be removed for cleaning. The base 8 of the furnace carrying a burner and a discharge shoot may be mounted on a carriage for easy removal. A water-cooled seal 22 connects the upper end of the kiln 1 and charging part 26, Fig. 5, burnt gases withdrawn from compartment a passing through pipes 50 to form a cool blanket at the upper part of the kiln. Gases withdrawn from the lower part of chamber 26 are delivered to a pipe 44 carrying gases withdrawn from the compartment b. A damper controlled opening in the partition 30, and valves between the compartments and their individual or common ventilating fans allow control over the flow of gas and hence the preheating in each compartment. The Specification describes an arrangement for rotating the kiln, Fig. 2, not shown, and the water-cooled seal may be divided into several water chambers.
Patent GB-204592-A (GB)
Title: Improvements in and relating to electric switches
IPC: H01H33/12
Filed: 1922-11-29
Abstract: 204,592. British Thomson - Houston Co., Ltd., (General Electric Co.). Nov. 29, 1922. High-potential switches have primary contacts which normally carry most of the current, secondary contacts at which the circuit is finally broken and tertiary contacts at which the circuit is first made. The operating-rod 20 carries a bridging member 51 which co-operates with fixed primary contacts 50 and pivoted tertiary contacts 33; it also carries within explosion chambers 25 secondary contacts 41 which co-operate with contacts 27 pressed towards them by springs 29. On depressing the rod 20, contact is first broken at the primary and tertiary contacts, the downward movement of the latter being impeded by dash-pots 35. The secondary contacts 27 follow the contacts 41 till stopped by a collar 26, after which the circuit is broken. On raising the rod 20 contact will first be made at the tertiary contacts 33 which will have fallen to their lowest position. The tips of the secondary and tertiary contacts are renewable.
Patent GB-537484-A (GB)
Title: Improvements in pipe joints
IPC: F16L17/035
Filed: 1939-12-21
Abstract: 537,484. Pipe joints. TURNER & NEWALL, Ltd., and TURNER, L. A. Dec. 21, 1939, No. 32688. [Class 99 (i)] In a joint for plain-ended pipes of asbestoscement in which a packing ring 4 has a face 9 sloping inwards towards the axis of the joint so that the ring is compressed on assembly ina recess 2 in an asbestos-cement socket or sleeve 1, the shape and size of the ring and recess are such that the ring fills the recess when the pipe has been pushed home into the socket. The ring is preferably of forked cross-section and its face 9 conical. The ring may be anchored by glue in the recess.
Patent GB-342655-A (GB)
Title: Improvements in the boiler in absorption refrigerating machines
IPC: F25B15/10
Filed: 1929-10-29
Abstract: 342,655. Refrigerating. MAIURI, G. and BOSSINI, R. F., 62A, Kensal Road, North Kensington, London. Oct. 29, 1929. No. 32776. [Class 29.] Absorption systems. -The generator 10 is provided with means for restraining movement of the liquid set up by vapour expulsion and convection, whereby the vapour evolved near the source of heat serves to heat liquor in remote strata and is rectified in its passage through the liquid. The liquid space may be filled with loose material 24 such as glass balls, small iron tubes, shot, coarse sand, metal shavings, or porous earthenware blocks, or the generator may be fitted with finely perforated spaced partitions. The loose material may be placed between limiting gratings 22, 23, or between series of partitions having alternating central and peripheral apertures, or within the turns of a helical baffle. The invention is described in connection with a continuous-cycle inert gas apparatus having a separately heated riser pipe 26 conveying weak liquor to a vessel 28 in communication with a liquor heat exchanger 30 and with a cooler 19 for the gas mixture, which passes from the evaporator 16 through a heated conduit 13. The weak liquor may flow from the vessel 28 through a coil wound round the generator, to heat the upper part of the latter, before passing to the heat exchanger.
Patent GB-950665-A (GB)
Title: Filter capable of regeneration
Inventor: BERNDT WOLFGANF
IPC: B01D39/08
Filed: 1961-09-13
Abstract: In a filter capable of regeneration composed of a loose planar fibrous fleece formation of natural or synthetic fibres, the fibres of which lie substantially parallel with one another, and provided on one or both sides with a covering fabric, the fleece fibres are permanently bonded by a number of rows of stitches perpendicular to the lengthwise direction of the fleece fibres.
Patent GB-392096-A (GB)
Title: Improvements in or relating to permanent magnets
IPC: H04R9/02
Filed: 1932-11-21
Abstract: 392,096. Magnets. JACKSON, L. MELLERSH-, 28, Southampton Buildings, London.-(Deutsche Edelstahlwerke Akt.- Ges.; 578, Gladbacherstrasse, Krefeld, Germany.) Nov. 21, 1932, No. 32857. [Class 35.] Permanent magnet of pot type for loud-speakers &c. consists of a body a of magnet steel of conical form so as to produce an annular pole. The other pole is provided with a central polepiece c of soft iron and the annular pole is furnished with a disc b forming a polepiece. The body a may be circular or elliptical in section.
Patent GB-328856-A (GB)
Abstract: 328,856. Patterson, T. K. June 29, 1929. No Patent granted (Sealing fee not paid). Matches.-A stick for a double-headed match is provided with a transverse notch near to each striking head, and also with a longitudinal groove along its length,
Patent GB-484320-A (GB)
Title: Improvements relating to ignition apparatus for internal combustion engines
IPC: F02P5/06
Filed: 1936-12-01
Abstract: 484,320. Centrifugal governors. ELLIOTT, A. G. Dec. 1, 1936, No. 32906. [Class 57] [Also in Group XXVII] A link D pivoted to the driven element carrying the ignitioninterrupter cam of an internal - combustion engine and also to the centrifugal mass C<1> pivoted on the driving member, is formed with a cam surface F which bears against a lever E, also pivoted to the mass C<1> and restrained by a spring E<1>. At low speeds the cam surface engages the lever at a greater distance from its fulcrum C than when the speed is greater. The restraining effect of the spring thus increases with the engine speed and the rate of advance decreases. The cam formation may be on the lever E.
Patent GB-1171717-A (GB)
Title: Device for Guiding a Thread
IPC: D03D47/00
Filed: 1967-07-18
Abstract: 1,171,717. Guiding and tensioning threads. MACHINEFABRIEK L. TE STRAKE, N.V. 18 July, 1967 [19 July, 1966], No. 32920/67. Heading DID. A device for guiding a thread comprises a channel for the thread consisting e.g. of an outlet tube 1b an inlet tube 1a and an interconnecting passage 9, the channel having at least one discharge opening 11 or 12 for a fluid, the opening or openings being arranged so that fluid leaving a discharge opening flows towards one end of the channel. As shown compressed air fed to an inlet 16 can be directed to either discharge opening 11 or 12 by means of a slide valve 17 biassed by a spring 8 to normally supply air to opening 8. To thread up the channel which may be provided between a supply package and forwarding rollers, valve 17 is displaced so that compressed air flows from opening 12 and causes an air current to flow through the channel opposite to direction A. The thread end is applied to the end of tube 1a and is drawn' through the channel to be discharged at the mouth of tube 1b. After threading up, compressed air can be fed to opening 11 so as to act as a frame on the thread passing through the channel; alternatively the source of compressed air can be switched off.
Patent GB-954929-A (GB)
Title: Improvements in synchronous motors
IPC: H02K7/118
Filed: 1961-09-14
Abstract: 954,929. A.C. motors. CONTROLS CO. OF AMERICA. Sept. 14, 1961 [Oct. 25, 1960], No. 32946/6 Heading H2A. A self-starting synchronous motor comprises a permanent magnet rotor body and an electromagnetic field system, a ferrous body 60 secured to the rotor to initiate rotatory motion and aligned in position by a pin 68 on one body co-operating with a slot 74 in the other body. In Fig. 2 a housing 10 is divided by plate 12 into a motor section 14 and a gear section 16. A core 18 supports shaft 20 which projects through aperture 22 into the gear section. A ,permanent magnet rotor 30 with a ferrous metal arm secured to it revolves on shaft 20. The ferrous arm 60 is aligned by pin 68 and slot 74, Fig. 7. The field system energized by coil 28 comprises inner spider 38, on outer spider 40, the two having interdigitated poles 42, 44. With the motor under load, the rotor may come to rest in a magnetically " null " position, Fig. 1, and refuse to start on re-energization of the coil. The pole 64 on arm 60 bridges the gap between poles 42, 44 and on energization of the coil causes an unbalanced force to move the rotor out of the " null " position.
Patent GB-521063-A (GB)
Title: Apparatus for trimming and joining the ends of fabric pieces
IPC: D05B23/00
Filed: 1938-11-14
Abstract: 521,063. Sewing - machines; variable - speed gearing. SINGER MANUFACTURING CO., Ltd., CORRALL H., and HEGGIE, J. Nov. 14, 1938, No. 33005. [Class 112] [Also in Group XXIV] The stitches at the beginning and end of a seam made by a piece-end sewing-machine are more closely spaced than the intermediate stitches. The variation is effected automatically, without stopping the stitching, by action upon both the means for bodily moving the machine and upon the machine feed-dog mechanism. The machine, which is a development of that described in Specification 474,261, is mounted on wheels 6 which run on rails 1 and is moved along the rails by means of a driven sprocket wheel 52 and a stationary chain 16. The wheel 52 is driven from a pulley 65 through a two - speed epicyclic gear, a shaft 56 and toothed wheels 62, 50. When the plunger 85 is moved to the right 'in Fig. 6, the speed is changed from slow to fast. This movement of the plunger is effected by the cam end of a lever 107, 10-7<SP>1</SP> which is also coupled by a rod 108 and lever 40 to a stitch regulating slide block 35. The lever 107 is moved by means of an escapement mechanism 111, 112, Fig. 5, when the shaft 114 is turned by means of a ratchet pawl 116 on a lever 115. A pin 119 on this lever is moved upwards. by a rod 121 when the latter rides up a cam surface 123, as the machine travels past it, and the lever is given its return operative stroke by a spring 131. The cam 123 is located at a suitable distance from the starting position of the machine and another is similarly located with respect to the finishing position. The epicyclic gearing comprises a fixed pinion 67, a driven pinion 91 on the shaft 56 and two pairs of planet pinions, alternatively operative, mounted upon spindles 69, 87 carried round by the driving pulley 65. The pinion 90, of the higher gear planet pair, is coupled to the pinion 88 by ratchet teeth between the end face of the pinion 90 and a disc 98 which rotates with the pinion 88. This provides a connection which can be over ridden, to keep the movement of the machine in agreement with the movement of the work under the feed-dog, when the lower gear is in operation. The latter comprises two pinions 68, 71 and these are positively connected when pins 73 carried by the pinion 71 enter holes in the pinion 68. These pins are withdrawn by an axial movement of the pinion 71 effected when the plunger 85 is moved inwards, by means of a lever 77 and a link 76 in rotary engagement with the pinion. Removing trimmings.-A blower on the carriage, driven by a belt from the driving motor, directs a blast of air through a pipe against a chute for carrying away trimmings.
Patent GB-1439517-A (GB)
Title: Negative electrode plates for batteries
IPC: H01M4/66
Filed: 1973-07-11
Abstract: 1439517 Battery electrodes WESTING- HOUSE ELECTRIC CORP 11 July 1973 [31 July 1972] 33017/73 Heading H1B A negative electrode plate for a battery has an active material comprising a blend of two grades of particles of iron oxide and/or hydrated iron oxide, 60-80 wt. per cent of the particles being over 5 Á in average size and being fusecoated with elemental sulphur, selenium or tellurium at 0À5-4À0 wt. per cent, and the remaining 40-20 wt. per cent of the particles being under 2 Á in average size and being fusecoated with elemental sulphur, selenium or tellurium at 4-20 wt. per cent. The material may be pasted or vacuum impregnated on to a plaque in the form of a mesh or grid of fibrous strands of nickel or of nickel-plated iron or steel in woven or unwoven texture (and optionally diffusion heat-bonded) with a porosity in the range 75-95%. An embodiment uses a 70/30 blend of 15-40 Á natural and 0À8 Á synthetic magnetite, the particles being coated with sulphur. (The treated unblended magnetites are made into comparative plates). When the plates are used in 25-40 wt. per cent KOH against nickel electrodes of suitably smaller capacity, discharge may be directed to the upper of two voltage discharge plateaux of the iron electrode.
Patent GB-393281-A (GB)
Title: Improvements relating to light signals
IPC: B61L5/18
Filed: 1931-11-30
Abstract: 393,281. Electromagnets. WESTING- HOUSE BRAKE & SAXBY SIGNAL CO., Ltd., 82, York Road, King's Cross, London. -(Assignees of Wells, W. B.; 724, Princeton Boulevard, Wilkinsburg, Pennsylvania, U.S.A.) Nov. 30, 1931, No. 33133. Convention date, Jan. 8. [Class 35.] A light-signal spectacle is operated by electromagnetic means comprising a rotor with a horizontal core 38 to the ends of which are fixed oppositely offset armature members 39, 40 which are separated by vertical air gaps from polepieces of a permanent field-magnet structure. Fig. 5 shows the rotor and spectacle. Trunnions 50 of nonmagnetic material are fixed to the core ends whereby it is mounted in supporting ball bearings. The core when normally or reversely magnetized by a fixed surrounding coil moves the spectacle one or the other way from the neutral position. The coil is wound on a tubular copper sleeve so that the flux dies away slowly and the spectacle returns gently to the neutral position. The armatures 39, 40 are formed with tapering ears 53, 54 so that a greater torque is exerted near the end of the stroke than at the beginning. Fig. 4 shows the permanent field-magnet assembly which is so arranged that various adjustments can readily be made and any permanent magnet be removed without disturbing the rest of the apparatus. The assembly consists of upper and lower horizontal flat bars 21, 22 at the ends of which are fixed plates 23, 24 against the side faces of which abut the ends of bar permanent magnets 25. The upper and lower plates 23, 24 are spaced by nonmagnetic (brass) blocks 29 which are slotted at 30 to receive a bolt 26 by which front and back clips 27 are connected together to retain the bar permanent magnets 25. Turning of the bolt is prevented by a washer 28 with upstanding ears. The field polepieces 31 .. 34 are fixed to the upper and lower horizontal flat bars 21, 22 to form at one end a front pair 31, 33 and at the other end a rear pair 32, 34 of pole faces to co-operate with the two offset armatures of the spectacle rotor from which they are separated by a vertical plane air gap. The fixing screws 35 have clearances to permit adjustment of the pole faces. The supporting bracket for the spectacle rotor is similarly fixed to the lower flat bar 22 by screws having clearance so that the core may be accurately centred with respect to its energizing coil.
Patent GB-764013-A (GB)
Title: Improved method of preparing sodium chloride brines of high purity
IPC: C01D3/16
Filed: 1954-11-16
Abstract: Sodium chloride brines low in calcium sulphate content are prepared by dissolving solid sodium chloride contaminated with calcium sulphate, in water in the presence of a polyphosphate, soluble in the brine.  Suitable polyphosphates are the hexametaphosphates, tetraphosphates, pyrophosphates and tripolyphosphates or mixtures thereof.  Sodium phosphate is preferred but potassium, lithium or ammonium salts or mixtures may be used.  The preferred compounds have an alkali metal oxide/phosphorus pentoxide ratio of 1 : 1 to 2 : 1, that is the metaphosphate to the pyrophosphate.  Other phosphates include slowly soluble glassy phosphates prepared by fusing a mixture containing alkali metal oxide, alkaline earth, aluminium or iron oxide and phosphorus pentoxide, for example, 16-33 mole per cent of alkali metal oxide, 33-16 mole per cent of alkaline earth metal oxide and about 50 mole per cent of phosphorus pentoxide.  The polyphosphate may be added to the solid sodium chloride before dissolving but preferably the polyphosphate is added in the dissolving water, particularly when the solid sodium chloride is present in an underground source to which water is pumped and the resulting brine conveyed to the surface.  Preferred amounts of the polyphosphates are 50 to 100 p.p.m. based on the weight of water but amounts from 1 to 2000 p.p.m. may be used.  The amount of calcium sulphate dissolved is further decreased by dissolving the solid sodium chloride in the presence of both the polyphosphate and a water soluble alkaline earth metal compound e.g. calcium chloride or acetate, strontium or barium chlorides; amounts up to 1 per cent may be used.  The process is effective for the production of acid or alkaline reacting brines, the addition of calcium chloride being particularly effective in an acid environment.  Sodium hydroxide may also be added with the polyphosphate but such addition is preferably omitted when calcium chloride is also present.  Examples illustrate the effect of sodium hydroxide addition to the polyphosphate, the effect of low rate, the effect of the pH of the brine, the effect of calcium chloride addition at varying pH and the effect of a slowly soluble type of glassy phosphate containing 68 per cent P2O5, 15 1/2 per cent CaO and 16 1/2 per cen Na2O.
Patent GB-928840-A (GB)
Title: Improvements in or relating to photographic material
IPC: G03C1/34
Filed: 1961-09-18
Abstract: 2-Thio-4,5-diphenyloxazoline is prepared by adding hydrochloric acid to a solution of potassium thiocyanate in ethanol, filtering off the potassium chloride, and refluxing the filtrate with bezoin.  Other 2-thio-4,5-disubstituted-oxazolines are prepared by using, instead of benzoin, p-methoxy-benzoin, acetoin or butyroin and refluxing this in solution in a mixture of potassium thiocyanate and concentrated hydrochloric acid.  By using a -hydroxy-cyclohexanone in this method instead of benzoin, 2-thio-tetrahydrobenzoxazoline is obtained. Specifications 727,982, 789,823 and Belgium Specifications 493,464, 537,278 and 568,687 are referred to.
Patent GB-766442-A (GB)
Title: Improvements in or relating to the preparation of steroids
Inventor: SHORT WALLACE FRANK
IPC: C07J5/00
Filed: 1953-12-01
Abstract: Cortisone acetate is prepared by heating 4-acetoxy-4 : 5-dihydrocortisone acetate and a semicarbazide salt in the presence of a weak base and hydrolysing the cortisone acetate semicarbazone produced preferably with pyruvic acid. Alternatively the semicarbazone of 4-acetoxy-4 : 5-dihydrocortisone acetate is heated with a weak base and the product hydrolysed as before.  Any free cortisone produced by hydrolysis of the 21-acetoxy group is reacetylated.  Specified weak bases are pyridine, dimethylaniline and substituted pyridines.  In examples: (1) and (2) 4-acetoxy-4 : 5-dihydrocortisone acetate hemi-hydrate in pyridine is treated with aqueous semicarbazide hydrochloride, the crude semicarbazone of cortisone acetate separated and then refluxed with pyruvic acid in acetone when cortisone acetate separates; dilution of the mother-liquor with water precipitates cortisone, which is extracted with methylene chloride and subsequently esterified with acetic anhydride-pyridine; (3) 4 - acetoxy - 4 : 5 - dihydrocortisone acetate semicarbazone is refluxed with pyridine, the mixture evaporated and residue treated with pyruvic acid in aqueous acetone when cortisone acetate separates.  Starting material.  4-Acetoxy-4 : 5-dihydrocortisone semicarbazone is prepared by treating 4 - acetoxy - 4 : 5 - dihydrocortisone acetate in methanol with semicarbazide hydrochloride in aqueous NaOH solution.
Patent GB-983889-A (GB)
Title: Improvements in or relating to processes for the preparation of tetravalent uranium salts
IPC: C01G43/00
Filed: 1962-08-30
Abstract: Water-soluble uranous salts are prepared by reducing uranyl salts in acid solution, adding a base to precipitate uranous hydroxide, and dissolving this in an acid to yield a solution of the corresponding salt.  Reduction is effected electrolytically or by means of a reducing agent, e.g. zinc or aluminium powders or their amalgams, or sodium hydroxy methane sulphinate, added in slight stoichiometric excess, and the solution heated at 60-80 DEG  C. The base may be sodium, potassium or ammonium hydroxide or carbonate, or mixtures thereof, and the precipitated hydroxide is washed with water and centrifuged or filtered. The acid may be chosen to give the nitrate, sulphate, chloride or perchlorate, and the resulting solutions may be evaporated in a desiccator at 12-15 mm. pressure and at, or below, 20 DEG  C. to give crystals. The starting material may be uranyl nitrate in 2M or 3M nitric acid such that the solution contains 3-4 equivalents acid per mol. of salt.