baber/WOPTO huggingface dataset:
Patent GB-163120-A (GB)
Title: Improvements in or relating to hot water supply apparatus
IPC: F24H9/12
Filed: 1920-02-12
Abstract: 163,120. Coleman, A. B. Feb. 12, 1920. Heating water.- To enable a small quantity of the water in a tank a to be heated quickly, the return pipe to the boiler has an extension k sliding in guides m which can be lowered at will so as to fit into a socket in the return pipe connection i. The movement of the extension may be effected by a chain s and eccentric r operated by a handle u or by any other means. A crank mechanism is also described. Specification 106,683 is referred to.
Patent GB-966652-A (GB)
Title: Improvements in or relating to electrical installations employing semi-conductor devices of the kind designed to operate as thyratrons
IPC: H02M1/088
Filed: 1963-02-01
Abstract: 966,652. Converting. SIEMENS-SCHUCKERTWERKE A.G. Feb. 1, 1963 [Feb. 2, 1962], No. 4327/63. Heading H2F. [Also in Division H3] An electrical installation comprises first and second semi-conductor thyristor devices, connected in series, first and second striking transformers, and first and second circuits, the first circuit including the striking path of the first thyristor device, the secondary winding of the first striking transformer and the primary winding of the second striking transformer, and the second circuit including the striking path of the second thyristor device and the secondary winding of the second striking transformer. Referring to Fig. 1 a current surge is passed through the primary winding of transformer 29 when transistor 31 is temporarily switched on by the application of pulses to terminals 35, 36. The current surge results in the secondary winding of transformer 29 applying a control pulse to the thyristor 6 through the primary winding of transformer 27 so that thyristor 6 strikes. Thyristor 5 is similarly struck by way of the secondary winding of transformer 27 and thyristor 4 by transformer 25 and so on with the result that all the thyristors 1 to 6 are brought simultaneously into their " on " condition. Each thyristor is connected in parallel with an R.C. combination 7, 8 ... 17, 18 respectively forming a voltage divider and preventing overloading due to hole-storage effects. Fig. 2 shows how the invention is applied to a three-phase installation which comprises a transformer 40 having an over-voltage winding 41 and a number of secondary windings 42-46 corresponding to the number of sets of thyristors 1 to 5. In this case each thyristor is acted on only by the voltage of the primary winding associated with it. Resistors 39 control the current of the respective thyristors. The circuits may be used as D.C.-A.C. con verters in high-voltage direct current long distance transmissions.
Patent GB-633284-A (GB)
Title: Improvements in or relating to electric heaters
IPC: F24H3/00
Filed: 1948-02-16
Abstract: 633,284. Electric space-heaters. AUSTIN MILLS, Ltd., and BEAVON. T. A. Feb. 16, 1948, No. 4410. [Class 39(iii)] An electric space-heater has an upstanding helix of helically coiled resistance wire 15 mounted on a framework tapering from the lower to the upper end and heats air as it flows up through a casing 7 in the housing 1. The pitch of the coils increases from the lower to the upper end of the helix, minimizing uneven heating of the resistance wire. The framework is rigidly attached to the top of the casing 7 but free to move longitudinally due to expansion at the bottom of the casing. The housing 1 may contain more than one heating assembly and casing which are arranged so that all the air passes through the casings. Kick switches controlling elements may be fitted to vary loading and output.
Patent GB-345424-A (GB)
Title: Improvements relating to electron discharge tubes or thermionic valves
IPC: H01J19/50
Filed: 1930-02-10
Abstract: 345,424. Thermionic valves. XAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEX, 13A, Emmasingel, Eindhoven, Holland. Feb. 10, 1930, No. 4434. Convention date, July 29.. 1929. [Class 39 (i).] In an electron discharge tube or thermionic valve having an electrode secured to a collar surrounding a stem through which the leading-in wires of one or more other electrodes are led, the leading-in wire of the electrode secured to the collar is led out of the tube through a tube of insulating material arranged within the stem and sealed to the surface of the stem at a point spaced away from the end of the pinch through which the other leading-in wires leave the bulb. In the example, Figs. 1 and 2, a flattened cylindrical anode 12 is carried by wires 13, 14 secured to a collar 15 clamped around a stem 2 within a bulb 1. The anode leading-in wire 17 is connected to the collar 15 and led through the insulating tube 16 arranged within the stem to which it is sealed at one side of the pinch 3. The tube 16 may be used for exhausting the bulb during the process of manufacture.
Patent GB-511426-A (GB)
Title: Improvements in apparatus for operating sunblinds and the like
IPC: E04F10/06
Filed: 1938-02-12
Abstract: 511,426. Sunblinds. DEAN, C. B., (trading as IRVING & CO.), and MITCHELL, J. C. Feb. 12, 1938, No. 4444. [Class 20 (iii)] Relates to sunblinds or awnings of the type which are carried and operated by pivoted supporting arms. According to the invention, a series of such blinds or awnings are operated simultaneously by means comprising an operating screw or screws for each blind or awning, a driving shaft driven by an electric motor or the other power unit, and a reversing mechanism for controlling the direction of rotation of the operating screws. In the construction shown in Fig. 1, which shows only one awning of a series, the supporting arms A are connected to nuts d which traverse the screw D by auxiliary arms a. The screw is driven by an electric motor M ,and the direction of rotation of the motor is controlled by a hand-operated switch G. One of the nuts d is adapted to engage with two abutments e<1>, e<2>, on a rod E when the awning approaches the end of its outward and inward movements. The rod carries a block f which rides over a push-button of a switch F. When the rod is moved in either direction by the nut the block engages with the switch to cut off the current supplied to the motor M. The device which actuates the switch G serves also to impart a movement to the rod E to remove the block f from the switch F. The screw D is prolonged to extend to a number of windows to operate a number of awnings simultaneously. In the modification shown in Fig. 6, a shaft m, driven by a motor M, is connected by hand-controlled reversing gears H to the screws D of three awnings. By manipulating the hand-levers H<1> of the reversing mechanism, any desired number of the awnings may be actuated in the required direction. In another modification, the supporting arms are of the lazy-tongs type, the inner ends being connected to nuts which traverse vertical screw-threaded shafts driven, through reversing mechanisms, by a driving shaft extending to a number of awnings. Specifications 2500/12, 212,706, [both in Class 52 (v)], 488,626, 488,627 and 504,042 are referred to.
Patent GB-199680-A (GB)
Title: Improvements in electric motor control circuits operated by series-parallel controllers of the tramway type and the like
IPC: B60L15/04
Filed: 1923-02-17
Abstract: 199,680. Edwards, W., Etheridge, L., and Baker, J. A. Feb. 17, 1923. Series-parallel systems.-In tramcar motor control systems comprising front and rear motors C, D and front and rear controllers A, B, the circuit connections are arranged in the order ADC (when controller A is in use) or BCD (when controller B is in use), the motor at the end remote from the controller coming next in order of connections.
Patent GB-621323-A (GB)
Title: Improvements in or relating to electric circuit-breakers having arcing-contacts
IPC: H01H9/38
Filed: 1947-02-18
Abstract: 621,323. Air-break switches. ETABLISSEMENTS MERLIN & GERIN. Feb. 18. 1947, No. 4658. Convention date, Aug. 4, 1944. [Class 38(v)] In a heavy-current, low-voltage circuitbreaker having pairs of auxiliary and main arcing contacts, arranged in low and high resistance circuits, respectively, the fixed auxiliary contact is a clip 5, the jaws of which are electrodynamically urged to engage a blade 6 carried by the main movable contact 2. The clip 5 is mounted on an arcing horn 4 co-operating with the spring-urged movable main arcing contact 7. The blade and clip contacts may, alternatively, be transposed and a magnetic blow-out provided.
Patent GB-1126144-A (GB)
Title: Improvements relating to worm mixing and kneading machines
IPC: B29C48/40
Filed: 1967-01-31
Abstract: 1,126,144. Mixing apparatus. WERNER & PFLEIDERER. 31 Jan., 1967 [11 Feb., 1966], No. 4658/67. Heading B1C. In a screw mixing or kneading machine the screw and/or the casing are made of plates bonded together face to face e.g. by welding, soft or hard soldering or by an adhesive, enabling the members to be economically formed without machining. They may be similarly attached to the shaft. The separate plates may be of different materials, thicknesses and/or sizes and may be offset to form a single, double or triple thread, or as shown, they may be grouped and have a core 1a with a periphery of a different (e.g. wear or temperature-resisting) material.
Patent GB-430235-A (GB)
Title: A process for the removal of iron from water and salt solutions
IPC: C01F7/748
Filed: 1935-02-13
Abstract: Iron is removed from water by treatment with potassium ferrocyanide to remove ferric iron and potassium ferricyanide to remove ferrous iron, the precipitates being rendered readily filterable by adding a soluble or insoluble zinc compound such as zinc sulphate or zinc oxide.  The quantities of ferric and ferrous iron to be removed may be determined colorimetrically by the use of dipyridyl.
Patent GB-1275201-A (GB)
Title: Improvements in and relating to containers
IPC: B65D1/16
Filed: 1970-01-30
Abstract: 1275201 Portable containers STERNBRAUEKEI CARL FUNKE AG 30 Jan 1970 [30 Jan 1969] 4720/70 Addition to 1191873 Heading B8D The end wall (2) of the disposable plastics barrel shaped container (1) disclosed in the parent Specification, is dome-shaped to permit the wall thickness to be reduced.
Patent GB-212388-A (GB)
Title: Improvements in and relating to tricycles for children
IPC: B62K9/02
Filed: 1923-02-20
Abstract: 212,388. McErlane, D. Feb. 20, 1923. Tricycles; collapsable cycles; direct-action velocipedes; heads; saddles.-A child's tricycle adapted to be readily dismantled and re-assembled by means of bolts or pins comprises two parallel and horizontal frame bars 20 having rear parts 20<a> bent downwards and outwards for attachment by bolts and nuts to a rectamgular back axle, on the circular ends of which rotate the two rear wheels 26. Between the front ends of the bars 20 is bolted a bracket 1 formed of a plate bent double on itself and provided with a tubular part 2 at the bend, for the reception of the handle-bar stem 3 provided with collars 4, 5. The front wheel axle rotates in eyes 7 at the ends of the fork limbs, and is removed sideways together with one of the pedal cranks 9 by first removing the other crank, the latter crank and the wheel 10 being pinned to the axle. The saddle 30 is provided with two inverted L-shaped plates 31 fixed back to back and adapted to be adjustably secured by bolts and nuts 32 between the frame bars 20.
Patent GB-882720-A (GB)
Title: Improvements in variable-speed and clutch units
IPC: B62M25/00
Filed: 1958-02-14
Abstract: 882,720. Expanding-wheel gear. ATELIERS DE LA MOTOBECANE. Feb. 14, 1958 [Feb. 14, 1957], No. 4926/58. Class 80 (2). In an autocycle automatic variable speed gear and clutch unit, wherein a centrifugal clutch comprising a drum 26 fast on a crankshaft 2 and a plate 29 carrying a centrifugal mechanism 32 is combined with an expanding V-belt pulley comprising flanges 1, 3 rotatable on the crank-shaft, the flange 1 being fixed to the plate 29 and the flange 3 being axially movable towards the flange 1 by centrifugal balls 12, blade springs 6 connect the plate 29 and the flange 3, urge the two flanges apart and, to facilitate radial belt movement, permit slight irregular axial and rotary movements of the flange 3 relative to the flange 1. The ends of the springs 6 may be connected to the plate 29 and the flange 3 by welding, simple insertion or, as shown, rivets 30 and screws 31 respectively. Reference has been directed by the Comptroller to Specification 798,357.
Patent GB-373250-A (GB)
Title: Improvements in adjustable headrests and the like
IPC: A47C7/38
Filed: 1931-02-17
Abstract: 373,250. Head rests. WARSOP, A. C., 9, Bradmore Rise, Sherwood, Nottingham. Feb. 17, 1931, Nos. 4947 and 13456. [Class 52 (ii).] An angularly adjustable head rest 3 is held in position by resilient retaining means capable of yielding to enable the rest to be adjusted by hand. The preferred form has a double ball catch 11, 12 on a projecting arm 1 which is screwed or socketed to the seat back and to which the head rest is pivoted, the latter having an arcuate box-like guide 6 for each such arm provided with a series of holes 13 for the balls 11.
Patent GB-1125720-A (GB)
Title: Improvements relating to the preparation of mixed fertilizers
IPC: C05B11/06
Filed: 1966-02-04
Abstract: 1,125,720. Mixed fertilizer salts. TYPPI OY. 4 Feb., 1966 [4 Feb., 1965], No. 5002/66. Heading C1A. A mixture of Na, K, or ammonium phosphate and nitrate is obtained by dissolving a phosphate mineral in HNO 3  extracting the resulting solution with an organic solvent in the presence of excess HNO 3 , neutralizing the organio extract with NH 3  gas or a compound of Na, K, or ammonium, e.g. Na or K carbonate, and separating the salt phase, which may be a water solution or suspension or a solid. The separated solvent may be returned to the extraction stage. The extraction is preferably effected with nbutanol in counter-current. It may be so carried out as to extract Ca ions, in which case dicalcium phosphate is obtained in the salt phase also. The presence of Fe and A] in the raw mineral is referred to.
Patent GB-1174543-A (GB)
Title: Smokeless Fuel Covered with a Combustible Fibrous Composition
IPC: C10L5/04
Filed: 1968-01-31
Abstract: 1,174,543. Solid fuel. MOBIL OIL CORP. 31 Jan., 1968, No. 5026/68. Heading C5G. A smokeless and flameless solid fuel has in contact with at least a portion of its surface a combustible fibrous material, e.g. fibreboard, hardboard, paperboard or paperpulp. This material may be impregnated with an ignitable material, e.g. paraffin wax, polyterpenes, or an oil. The solid fuel is similar to that described in Specification 1,137,073, comprising petroleum coke or anthracite as the main component, and charcoal, sawdust or cotton hulls, as a minor component, and a solid oxidizing agent. Up to 15% b.w. non-swelling clay may be incorporated, and the fuel and fibrous material may be wrapped in a paper or plastic cover.
Patent GB-1478781-A (GB)
Title: Tooth generating tool
IPC: B24D18/00
Filed: 1975-02-06
Abstract: 1478781 Rolling gears; grinding EX-CELL-O CORP 6 Feb 1975 [19 Feb 1974] 5150/75 Headings B3M and B3D A tool for pressure forming teeth on a cylindrical workpiece comprises a first section of teeth 12A having a configuration conjugate to that of the teeth to be formed, and additional sections of teeth 120 ... 12G ... 12L of graduated height, the top lands of the teeth of the additional sections being stepped and disposed on lines 22C ... 22G ... 22L lying between the top lands of teeth 12A and their pitch line 50 and parallel to the pitch line. In the tool shown, to be used in a pair to roll a gear wheel, the bottom lands also lie on lines 52A, 52C ... 52G ... 52L which are parallel to and successively approach the pitch line 50 which is common to all sections. All teeth are of the same thickness measured at the pitch line, and the distance between successive teeth is also constant. A trailing section of the tool has teeth 12B with inclined pitch line, top line 22B and bottom line 52B, and. with relieved flanks to reduce errors as the rolling pressure reduces at the end of the stroke. Fig. 7 shows a part section of a grinding wheel used to make the tool, having a configuration to grind teeth 12B on a conventional grinding machine. After a grinding action, the tool is dressed to the configuration of the teeth of the next section, which is then presented for grinding of its teeth, until teeth 12L have been ground.
Patent GB-470773-A (GB)
Title: Process for the manufacture of esters, especially of ethyl acetate
IPC: C07C69/14
Filed: 1936-02-20
Abstract: <P\1> A primary alcohol is converted into an ester containing double the number of carbon atoms by treatment at 200--260 DEG  C. with a catalyst consisting of a reduced metal with or without a promoter oxide such as an oxide or oxides of titanium, thorium or uranium, condensing a part of the reaction product, and returning the remainder which is rich in hydrogen, to the catalytic zone to mix with further fresh alcohol.  Anhydrous ethyl alcohol is passed through a vaporizer 10 to a reaction chamber 1 containing reduced copper and uranium oxide on infusorial earth at 220 DEG  C.  The first product is acetaldehyde and hydrogen, which is cooled in a condenser 2, the condensate collecting in a receiver 3.  The uncondensed gas is taken by a pipe 4 and pump 5 to the reaction chamber 1, and the condensate in the receiver 3 then consists mainly of ethyl acetate.  Acetaldehyde is separated from the condensate in a column 6 and returned by a pipe 11 to the reaction chamber.  The ethyl acetate is rectified in a column 8, unchanged alcohol being withdrawn by a pipe 9 and returned to the reaction chamber.  The proportion of gases returned to the reaction chamber is high, for instance, 250 cubic metres for 100 kilos of alcohol.  Reference has been directed by the Comptroller to Specification 393,267.
Patent GB-437413-A (GB)
Title: Improvements in or relating to the production of multiple sound records
IPC: G11B7/00
Filed: 1935-02-18
Abstract: 437,413. Photographic projection - printing of sound-records. ZEISS IKON AKT.-GES., 72, Schandauerstrasse, Dresden, Germany. Feb. 18, 1935, No. 5232. Convention date, Feb. 17, 1934. [Class 98 (i)] [See also Group XXXVIII] A multiple variable area sound-record is produced from a negative single record by a projection printing-process involving the use of a cylindrical lens grid 9.
Patent GB-214203-A (GB)
Title: Improvements relating to turbine installations
IPC: F01D15/02
Filed: 1924-02-29
Abstract: 214,203. Metropolitan Vickers Electrical Co., Ltd., (Assignees of Kasley, A. T.). April 12, 1923, [Convention date]. Cooling and heating parts.-In a turbine installation comprising high and low pressure turbines 10, 13 each having forward and reverse sections 11, 12 and 14, 15 and wherein at least one stage of each turbine includes blading which on reverse rotation sets up pumping action, valve-controlled by-passes connect the normal admission ends of the stages in which pumping action takes place with regioins of relatively lower pressure. The reaction stages 19, 21 in the forward sections of the high and low pressure turbines set up pumping action on reverse rotation and valve controlled by-passes 29, 30 communicating with relatively lower pressure regions relieve the pressure. The valves 31, 32 controlling the by-passes are automatically operated by the steam pressure. Specification 168,946 is referred to.
Patent GB-608355-A (GB)
Title: Improvements in or relating to cartridge belts
IPC: F42B39/08
Filed: 1946-02-20
Abstract: 608,355. Cartridge belts. WHEELER, W. E., HOLT, F. E., and MITCHELL, S. S. C. Feb. 20, 1946, No. 5373. [Class 92 (ii)] Relates to disintegrating links for cartridge belts in which the cartridges themselves form the hinge pins. According to the invention, each single loop 2, which nests with rocking play between a pair of loops 1 on an adjacent link, has its inside surface x of convex form to facilitate twisting of the belt. The convexity flattens at the free end of the loop and where it joins the bridge 5 between the loops. Lugs 7, which limit rocking movement are provided.
Patent GB-431532-A (GB)
Title: Improvements relating to the manufacture of metal tubes
IPC: B21D5/10
Filed: 1934-02-19
Abstract: 431,532. Making metal tubes. BAILEY, G. E., Oak House, Bankhall Lane, Hale, Cheshire, BROWNLOW, E. G., 152, Derbyshire Lane, Stretford, Manchester, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, London. Feb. 19, 1934, No. 5485. [Classes 83 (ii) and 83 (iv)] In making metal tubes from flat strip the edges are progressively bent while the longitudinal centre is free and unrestricted on both sides. As shown, the apparatus comprises a guide 3 for the strip 2, pairs of rollers 4, 5, 6, a guide 8, a die 7, a pair of rollers 9, a die 10, and pairs of rollers 11, 12, 13, 14 and 15. The strip A shown in Fig. 2 passes to the stages B ... L in the corresponding pairs of rollers or dies shown in Fig. 1 vertically above them. The dies 7 are shown in side elevation in Fig. 4, and comprise a lower die member 19 with an aperture, which tapers in part, and the section of which, is a segment of a circle. The dies 10 are similar in shape to the dies 7, but have a smaller aperture. After leaving the rollers 15 the tube enters closing dies 17 for welding.