baber/WOPTO huggingface dataset:
Patent GB-532787-A (GB)
Title: Improvements in or relating to steam generators
IPC: F22G5/02
Filed: 1939-09-20
Abstract: 532,787. Water-tube steam boilers; steam super-heaters. FOSTER WHEELER, Ltd. Sept. 20, 1939, No. 26257. Convention date, Nov. 4, 1938. [Classes 123 (ii) and 123 (iii)] In a boiler having two separate furnaces 22, 23 with separate gas passes, one only of the furnaces 23 contains a radiant heat super-heater 73 which is connected in series with a convection heat super-heater 79 in the pass abolve the furnace in order that a constant degree of superheat may be maintained at all ratings by regulating the relative firing of the two furnaces. The furnaces are separated by closely spaced tubes 15, 16, 17 connected to an upper drum 18 and lower headers 19, 20, 21. The side and end walls of the furnace 22 are cooled by water tubes 57 between upper and lower headers 59, 60 and water tubes 58 between upper and lower headers 61, 62. Inclined tubes 26, 27 above the furnaces are connected to the drum 18 and to vertical headers 28, 29 which are connected by risers 30, 31 to upper drums 32, 33. The main steam and water drum 34 is connected to the drum 18 by downcomers 35. Feedwater admitted to headers 43, 44 is heated in economizer tubes 45, 46, 54, 55. Steam from the drum 34 is led into the inlet header 67 of the radiant heat superheater 68 lining the wall 13 of the furnace 23 and then flows from the outlet header 69 to an upper header 70 and through a steam line 71 to the inlet header 72 of another group of radiant heat super-heater tubes 73 lining the front wall of the furnace. The steam is then conducted to the inlet header 78 of a convection super-heater 79 in the gas pass above the furnace. The relative rates of firing of the two furnaces is controlled by a proportioning valve 84 in the discharge from the exhauster 85 of the mill 83 which is fed with pulverized fuel.
Patent GB-746822-A (GB)
Title: Improvements in and relating to frequency changers
IPC: H01F38/04
Filed: 1950-10-30
Abstract: 746,822. Changing frequency. GROSMAN, A. Oct. 30, 1950 [Nov. 1, 1949], No. 26390/50. Class 38 (2). A frequency reducing or dividing arrangement comprises a saturable inductance 14, preferably without an air gap, in part at least included in a primary circuit having an A,C. source 10 and a half-wave rectifier 12 in series, and in part at least included in a secondary circuit comprising a capacitance 18 and an inductance 16 common to both circuits which may be connected to a tapping on the inductance 14. For odd subharmonics generated the rectifier 12 may be cut out after oscillations are started or simultaneously, for example, with a load being switched on across the condenser, but for even subharmonics the rectifier 12 must be left in circuit. In a modification (of Fig. 1) the inductance portions 14<SP>1</SP>, 14<SP>11</SP> are separate equal coils wound on a common magnetic core and the inductances 16 also separate equal coupled coils wound on a common core, resulting in the oscillation waveform generated being more symmetrical. In a further modification (Fig. 5) the inductances are symmetrically crosscoupled in a bridge circuit, with the load 22 and condenser 18 connected across a diagonal (the asymmetric flux distribution corresponding to the inductance 16. (Fig. 1)). Alternatively, separate half-wave rectifiers may be included in series with each of the inductance portions 14<SP>1</SP>, 14<SP>11</SP>, 16<SP>1</SP>, 16<SP>11</SP>. A resistance 36 (or capacitance) may be added to produce a slight asymmetry for facilitating starting. In a further modification (Fig. 6, not shown) the inductance portion 14<SP>1</SP> is in two parallel portions each including half-wave rectifiers of opposite polarity passing current impulses alternately in opposite directions to the resonance circuit 14<SP>11</SP>, 16, 18, to which latter the load is inductively coupled. The load, if inductive, may wholly or in part replace the inductance 16 (Fig. 1) or, if capacitive, the condenser 18. The inductance 16 may be linear (with an air gap) or non-linear and a rectifier may be provided in series with it. In a further modification (Fig. 10) the secondary circuit is coupled to the central leg of a threelegged magnetic core, round the two other legs of which the primary circuit coils 141, 161 are wound. In a variant of Fig. 5, the coils 14<SP>1</SP>, 14<SP>11</SP>, 161, 16<SP>11</SP> are wound on the outer legs of a three-legged core and the load circuit is inductively coupled to the centre leg. Specification 580,112 is referred to.
Patent GB-616396-A (GB)
Title: Improvements in or relating to motor driven hammers
IPC: B25D15/02
Filed: 1946-09-03
Abstract: 616,396. Percussive tools. AEBLI, T. Sept. 3, 1946, No. 26466. Convention date, Sept. 18, 1944. [Class 124] In a motor-driven percussive tool, a cam-shaft 8 is driven through a worm drive 6, 7 by a driving shaft 2 which is disposed substantially in the plane of an enclosing handle 1 and which carries a manuallycontrolled coupling 4, 5. The latter is operated against the action of a spring 30 by a two-armed lever 22 through the intermediary of a sliding rod 23, arms 24, 27 of a fork 25 pivoted at 26, and ball bearings 28 engaging in a groove in the part 4 of the coupling. The end 3 of the shaft 2 is connected by a flexible shaft to the driving motor.
Patent GB-439525-A (GB)
Title: Improvements in the manufacture of bricks or the like
IPC: C04B32/00
Filed: 1934-09-14
Abstract: A fibrous composition consists of approximately 12 1/2 per cent asbestos fibre, 47 1/2 per cent moler or diatomaceous earth, and 40 per cent Portland cement.  The composition is applied as a coating or sheet on silica bricks which are afterwards baked.
Patent GB-380942-A (GB)
Title: Means for regulating the withdrawal of a pulverised fuel from pulverising or grindingapparatus
IPC: B02C23/00
Filed: 1931-09-23
Abstract: 380,942. Delivery devices for grinding-mills. CHAUFFE ET COMBUSTION SOC. ANON., 4, Rue de l' Autonomie, Brussels. Sept. 23, 1931, No. 26561. Convention date, Sept. 23, 1930. [Class 59.] In a mill comprising a surface 3 of a grinding cone 2 or similar body which gyrates on a surface 1, the ground material is withdrawn through a suction orifice 9 covered by a rotary disc 10 provided with an opening 11 located beneath the contacting surfaces, the disc rotating at the same speed as the cone. The cone 2 is mounted on a pivot 4 supported in roller bearings 6 adapted to rock in a closed chamber provided on the outside with a spherical surface which forms a ball joint 7 with the cone 2. The disc 10 is provided with a crown wheel 13 driven by bevel wheels 14, 17 and may rotate under a partitioned orifice.
Patent GB-298630-A (GB)
IPC: H02G1/06
Filed: 1928-09-17
Abstract: 298,630. Eisenwerk Weserh³tte Akt.- Ges. Oct. 14, 1927, [Convention date]. Endless-chain machines.-A machine for laying electric cables comprises a trench-digging unit which moves forward on an endless track and which is furnished with dredging scoops for excavating the trench, and a separate cable truck which is coupled to run at a distance behind the digging unit. The trench digger G is mounted on a chassis 1 and endless track chains 2 which run over driving wheels 3 and guide rolls 4, the chassis being supported by roller bogies 5 pivotally mounted on spring axles. A shaft extension on a driving motor 6 is furnished with a flywheel and a spring pressure cone clutch. Driving shafts 10, 11 are actuated through a gear 8 and a clutch lever 9. The shaft 10 drives the track wheels 3 through a gear 12. The shaft 11, through a gear 11<1>, drives the excavating mechanism, the conveyors, and the hoisting mechanism of the dredger. The guide 13 for the dredger, the chain 14 and the buckets 15 which excavate the trench 16 are offset from the centre plane of the chassis, and the chain 14 is driven from a roll 17 by a chain 18 fitted on a sprocket 19 of a transverse shaft 20 on the gear 11'. The cantilever of the conveyor device F, carrying a conveyor apron 21, is offset from the centre plane of the chassis to the other side. The apron 21 is driven from a drum 22 chain-connected to a sprocket 24 on the shaft 20. The excavated soil is transferred from the buckets 15 to the apron 21 by a transverse conveyor 25 driven from a drum 26. The framework of the conveyor 25 is suspended from a cantilever 36 by ties. The cantilever 36, carried on an axle 36<1> journaled in the chassis 1, may be raised or lowered by a rope 37 and a hand-hoisting gear- 38.
Patent GB-1022048-A (GB)
Title: Thiazolidinone compounds
Inventor: SATZINGER GERHARD
IPC: C07D277/34
Filed: 1962-11-23
Abstract: The invention comprises 4-thiazolidinones of the formula <FORM:1022048/C2/1> wherein R1 is H, C1-6 alkyl or phenyl and R2 and R3 are C1-6 alkyl, and their preparation by treating the corresponding 5-unsubstituted compound with bromine, preferably at 25 DEG  C. in an inert solvent such as chloroform.  2 - Carbalkoxymethylene - 3 - alkyl - 4 - thiazolidinones, optionally bearing an alkyl or phenyl substituent on the methylene group, used as starting materials, are made by alkylating the alkali-metal derivative of the 3-unsubstituted compound with an alkyl halide or dialkyl sulphate.
Patent GB-980555-A (GB)
Title: Improvements relating to flexible connectors for semi-conductor devices
Inventor: LANGRIDGE ARTHUR
IPC: H01L23/488
Filed: 1961-07-24
Abstract: 980,555. Semi-conductor devices. WESTING- HOUSE BRAKE & SIGNAL CO. Ltd. July 9, 1962 [July 24, 1961], No. 26728/61. Heading H1K. [Also in Division H2] A flexible heavy - current connector for a semi-conductor device consists of a first portion fixed to the device and a second portion attached to a lead, the two portions of the cone of the connector being resiliently joined together and each having an opening through which a second lead is passed. The connector is stamped from sheet-metal and is then bent to the shape shown. The ring 32 is connected to a semi-conductor device, e.g. a controllable rectifier, by brazing or soldering, while a lead is similarly fixed to the edge of ring 31 remote from the hinge 35. A second lead may be passed through the apertures 33, 34, without making contact with the connector, and joined to a central terminal of the device.
Patent GB-691788-A (GB)
Title: An improved boiler stove for use on caravans
IPC: F24B9/00
Filed: 1949-10-18
Abstract: 691,788. Closed solid-fuel stoves. ROLLALONG CARAVANS, Ltd.. and LINDNER, D. M. Oct. 18, 1950 [Oct. 18, 1949], No. 26736/49. Class 126 A boiler stove, particularly for use in caravans, comprises a hollow metal casing, a small water boiler, a firegrate in front of the boiler, a firebrick lining above the grate and in front of the boiler, an ash box beneath the grate, and a damper arranged to direct the draught through a flue in front of the firebrick lining or through a flue behind the boiler so as to cut off the heating of the water or not. A cast iron body 3 has a chimney outlet 4. The lower part of the body has a partition 5, to the front of which is fitted a grate 6 with an ashpan 7 below it. A water boiler 8 is spaced from the back of the casing to provide a boiler flue and a firebrick lining 11 is.positioned in front of the boiler so that the space in front of it forms a second flue leading to the chimney. The flues are controlled by a slidable damper 13 so that the hot gases flow up behind the boiler 8 to heat the water, or up in front of the firebrick .11 to the chimney, or both flues may be used in an intermediate position of the damper. The stove has a front door 15. which may have mica windows and front grate bars 17.
Patent GB-267751-A (GB)
Abstract: 267,751. Thiele, B. May 17, 1926. No Patent granted (Sealing fee not paid). Multiplying-apparatus.-A multipling-machine comprises a variable toothed drum a adapted to be rotated by a pinion g mechanically or by hand through a clutch f and a set of denominational pinions b actuated successively thereby, the movement being transmitted through long pinions i to a totalizing counter r. A revolutions counter k is provided to register the number of rotations of the drum which represents one factor. The second factor is set on a scale d<1> by pointers d carried by the pinions b and adjustable by the longitudinal movement of the pinions on their screwed spindles h.
Patent GB-1397496-A (GB)
Title: High speed transport system
IPC: H02K41/03
Filed: 1973-06-05
Abstract: 1397496 Railway systems HITACHI Ltd 5 June 1973 [15 June 1972] 26799/73 Heading B7L A transport system comprises a track 2 and a vehicle 1, the track having a guide rail projecting into a groove in the vehicle, the vehicle having at least one horizontal superconducting winding 3 on each side of the groove, the windings 3 being coplanar, and the track carrying levitating windings 6 facing the superconducting windings and a stabilizing winding 4 positioned in or on the guide rail so as to be in substantially the same plane as the superconducting windings on the vehicle 1. In the system shown, propulsion windings 5 connected to a three phase supply are also mounted on the track and are substantially in the same plane as the superconducting windings on the vehicle. In a modification, Fig. 5 (not shown), the windings 5 are omitted and the stabilizing winding (7) is connected to a three phase supply to serve as both stabilizing and propulsion winding. In a further modification, Fig. 6 (not shown), the windings 5 are again omitted and the levitating windings (8) are connected to a three phase supply to serve also as propulsion windings.
Patent GB-388838-A (GB)
Title: Improvements in or relating to beer and like pumps
IPC: B67D1/02
Filed: 1931-09-25
Abstract: 388,838. Beer engines. GUY, A. G. H., Forest Lawn, Hollybush Hill, Snaresbrook, London. Sept. 25, 1931, No. 26814. [Class 102 (i).] A beer or like pump comprises a cylinder and detachable end members which are adapted to be assembled in a support and coupled together in operative engagement by a single locking device. The pump cylinder a is closed at its upper end by a cap c provided with a gland d through which the plunger e passes, and at its lower end by the housing j of an inlet valve k. The pump is supported by a bracket g having at its upper end a lug f which receives the cap c, and at its lower end a slotted lug i. A recess q in the upper face of the lug i receives a collar p formed on an internally screw-threaded sleeve n which surrounds, and engages with, a tubular extension l of the valve housing, screw-threaded at m. The diameter of the sleeve n is such that it can pass through the slot in the lug i to permit assembly and disassembly of the pump. The parts are clamped together and to the supporting bracket by rotation of the sleeve member n.
Patent GB-1451308-A (GB)
Title: Method and machine for forming random fibre webs
IPC: D04H1/72
Filed: 1975-06-24
Abstract: 1451308 Random blended fibre web formers RANDO MACHINE CORP 24 June 1975 [12 July 1974] 26827/75 Headings D1F and D1N In a random fibre web former a lickerin is fed with long and short fibres over separate feed plates 30 and 72 respectively, means being provided to keep the short fibers in close proximity to the lickerin in transit between the feed plates, and an air stream being provided to aid doffing of the combined fibers. A foraminous screen 206 provides the forming surface and air sucked through it is recirculated to provide the said doffing air stream. Feed rollers cooperate with the feed plates to advance fibers to the lickerin. As shown in Fig. 5 a double lickerin arrangement is employed with central mixing chamber 320 into which an air flow from above enters on respective sides of a divider 324 thus doffing the combined fibers from the respective lickerins. An adjustable flap 358" is provided to gauge the thickness of the formed web.
Patent GB-1338782-A (GB)
Title: Benzoxanthene and benzothioxanthene dyestuffs and process for their manufacture
IPC: C07D491/06
Filed: 1971-04-19
Abstract: 1338782 Benzoxanthene and benzothioxanthene dyes FARBWERKE HOECHST AG 19 April 1971 [14 April 1970] 26914/71 Heading C4P The invention comprises benzoxanthene or benzothioxanthene dyes having the general formula wherein X is -O- or -S-; Y is -O- or >N-R where R is hydrogen, alkyl, cycloalkyl or aryl, each of which may be substituted, a heterocyclic radical or a hydroxyl or amino group; R 1  and R 2  independently represent a hydrogen atom, a halogen atom or an alkyl or alkoxy group and n is a number having a value of from 1-3. The dyes may be prepared by sulphonating a benzoxanthene or benzothioxanthene - 3,4 - dicarboxylic acid derivative of formula The sulphonation is advantageously carried out with 95% or fuming sulphuric acid having an SO 3  content of up to 20% at a temperature of 50-170‹ C. The compounds produced are used as fluorescent dyestuffs for dyeing and printing condensation resins and plastic materials, on which they give yellow and green shades.
Patent GB-1459147-A (GB)
Title: Casting steel ingots
IPC: B22D7/00
Filed: 1974-06-18
Abstract: 1459147 Casting ingots BRITISH STEEL CORP 23 May 1975 [18 June 1974] 26971/74 Heading B3F In a method of casting steel ingots in which the metal is bottom poured into a mould 10 via an upstanding runner 16, a gas, e.g. argon or nitrogen, is introduced into the steel in the runner 16 through a pipe 19. Any inclusions in the molten steel are entrained by the rising gas bubbles and are either carried to surface of the metal in the runner 16 or adhere to the walls of the runner. A flux such as calcium tetraborate, calcium borate, sodium carbonate, calcium fluoride, hydroboracite, lime or magnesia may be added to the steel in the runner during pouring.
Patent GB-153769-A (GB)
Title: Improvements in and relating to devices for cleaning rifled gun barrels
IPC: F41A29/02
Filed: 1919-11-04
Abstract: 153,769. Mitty, W. F. Nov. 4, 1919. Ordnance, cleaning; machine guns.-A cleaning instrument, adapted to be pushed or drawn through the barrel, comprises a resilient coil 7 of varying diameters mounted on a central rod 2 with the inner edges of the smallest convolutions seated on the rod. Nuts 5, 6 at the ends of the rods are provided for expanding the convolutions. A rag or the like is wound on the coil 7, the outer edges of which may be serrated.
Patent GB-707928-A (GB)
Title: Improved scouring process, compositions therefor and processes for their production
IPC: C23G1/02
Filed: 1951-11-19
Abstract: Metallic surfaces, floors, sinks &c. are cleaned by applying cyanamide dihydrochloride thereto in the presence of water. Hydrolysis to hydrochloric acid and cyanamide takes place, both compounds having a dissolving power for rust &c.  The cyanamide dihydrochloride may be mixed with an abrasive or a degreasing agent. Abrasives specified comprise infusorial earth, Fuller's earth, wood ash and powdered silica.  The preferred degreasing agent is ethyl acetate.  The cyanamide dihydrochloride may be prepared by passing gaseous hydrochloric acid into ethyl acetate containing in solution free cyanamide, all in suitable proportions, while cooling the solution to keep it below 50 DEG C. The salt precipitates and after filtering off may be dried ready for use.  The solvent wetting the cyanamide dihydrochloride is preferably retained, a paste being formed.  Specification 636,600 is referred to.ALSO:Metallic surfaces are cleaned by applying cyanamide dihydrochloride thereto in the presence of water.  Hydrolysis to hydrochloric acid and cyanamide takes place, both compounds having a dissolving power for rust &c. The cyanamide dihydrochloride may be mixed with an abrasive or a degreasing agent.  Abrasives specified comprise infusorial earth, Fuller's earth, wood ash and powdered silica.  The preferred degreasing agent is ethyl acetate.  Specification 636,600, [Group III], is referred to.
Patent GB-1583487-A (GB)
Title: Pneumatic vehicle tyre
IPC: B60C15/06
Filed: 1977-06-29
Abstract: The carcass (4, 5) is anchored in the tyre beads (1) by wrapping around in each case one bead core (3). A bead reinforcing element (8) which consists of parallel threads lies next to the bead core (3), without enclosing it, between the carcass layer (5) located radially on the outside and a tongue-shaped outwardly acutely tapering rubber profile (6) which encloses the bead (1). In order to bring about dynamically effective reinforcement, the bead reinforcement element (8) lies over its entire height opposite the carcass layer (5) which lies radially on the outside. <IMAGE>
Patent GB-487371-A (GB)
Title: Improvements in the feeding of automatic firearms
IPC: F41A9/29
Filed: 1937-10-07
Abstract: 487,371. Automatic guns. SOC. ANON. DES ANCIENS ETABLISSEMENTS HOTCHKISS & CIE. Oct. 7, 1937, No. 27223. Convention date, May 5. [Class 92 (ii)] To decrease the strain which occurs when the cartridge belt is given a sudden acceleration by the gun feed mechanism, the belt 2, before entering the gun 3, passes over a sprocket or roller 4 which can yield against the action of a spring 8 to permit movement of the end of the belt near the gun relatively to the remainder. In the form shown, the sprocket 4 is mounted on a carriage 6 sliding on rollers 10, 11 against the action of a pair of springs 8 in a frame 7. The frame carries a roller 14 engaging a spring flap 13 which guides the belt 2 on its way to the sprocket. In a modification, the ends of the axle of the sprocket are controlled by independent springs to permit tilting of the axle.
Patent GB-279434-A (GB)
Title: Improvements in mounts with sunshade for photographic objectives
IPC: G03B17/12
Filed: 1927-10-14
Abstract: 279,434. Zeiss, C., [Firm of]. Oct. 23, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Lens fittings.-A lens hood for objectives whose mounts f project only slightly, if at all, from the lens panel d comprises a volute spring g which may be compressed, and held in inoperative position as by a catch i or by the folding baseboard b of the camera when this is closed.
Patent GB-462753-A (GB)
Title: Code lock
IPC: E05B67/32
Filed: 1935-10-03
Abstract: 462,753. Permutation locks. REINHOLDSTEN, H. Oct. 3, 1935, No. 27309. [Class 44] A code lock comprises shackle arms 15, 16 connected by links 17 to the cross-bar of a sliding bolt 18 held in the locking position by a pin 22 carried by a spring 21 on the back of the bolt passing through a hole in the bolt into a hollow spindle 24 carried by a fixed plate 19 on which the bolt slides. Mounted on the spindle 24 are two rotatable discs 25, 27, and two non-rotatable discs 26, 28. The disc 28 has a lug 29 and a recess 30, the disc 27 has a bent arm 32, 33 and a hole 34, and the disc 29 has a hole 39 adapted to register with 34, and a recess 36 engaged by a spring pawl 38 carried by the bolt 18. A rotatable handle 40 has a pointer co-operating with a series of numbers on the face of the lock, and has a spindle 41 carrying a disc 42 provided with two pins 44, 45, of which the pin 45 is adapted to enter the registering holes 34, 39 when the handle 40 is pushed in axially, while the pin 45 is adapted to travel round the edge of the disc 27 when the handle 40 is rotated, until it engages the arm 32, after which further rotation causes the bent part 33 of the arm to engage the lug 29 on the disc 25. When the three parts 29, 33, 44 have been thus brought together, the handle is rotated to successive angular positions determined by the code, so that the pin 45 is aligned with the holes 34, 39, and the pin 44 with the recess 30 in disc 25, and a hole 49 in the fixed plate 19. The handle is then pushed in, causing an extension 43 of the spindle 41 to enter the hollow spindle 24 and eject the pin 22. The released bolt 18 is then moved up by springs 50 to unlock the shacklearms 15, 16. To reset the lock, the handle is rotated anti-clockwise so that pin 44 engages a cam surface on the pawl 38 and draws the bolt 18 down until the spring pin 22 passes through it into the spindle 24.