baber/WOPTO huggingface dataset:
Patent GB-748043-A (GB)
Title: Process for the recovery and purification of vitamin b concentrates
IPC: C07H23/00
Filed: 1953-09-22
Abstract: Vitamin B12 concentrates are obtained from sewage sludge by incorporating therein cobalt salts and/or bacterial cultures promoting decomposition and favouring the formation of Vitamin B12 during the anaerobic digestion of sewage, treating the moist digested sludge with ferric chloride and/or aluminium sulphate in an amount of about 0.2 to 1 per cent and thereupon adding sulphur dioxide or water-soluble sulphites in sufficient quantity to bring the content thereof up to from 0.05 to 0.2 per cent, heating the digested sludge at a pH of from 5 to 8, at temperatures between 50 DEG  and 120 DEG C., and subjecting it to filtration or centrifuging and working up the resulting solution into a Vitamin B12 concentrate.  Subsequently any sludge present may be deposited by adjusting the pH value to between 3-4.  The resultant extract may be further purified with active charcoal, fuller's earth or bleaching earth, or alternatively evaporated to form a dry product.  From the extract obtained brown pigments may be removed by adsorption on a solid medium in the pH range 7-9 and elution with an aqueous eluant in the pH range 3-5. Vitamin B12 may be obtained from the crude aqueous concentrate thereby obtained by the addition of water-soluble salts, e.g. ammonium sulphate.
Patent GB-733975-A (GB)
Title: Improvements in or relating to alternators
IPC: H02K21/00
Filed: 1953-09-22
Abstract: 733,975. Gasturbine plant. BENDIX AVIATION CORPORATION. Sept. 22, 1953 (Oct. 1, 1952], No. 26132/53. Class 110 (3). [Also in Group.XXXV] A variable speed alternator for a gas turbine engine fuel control system comprises a multipolar permanent magnet rotor 40 slidably splined on a drive shaft 42 to be axially movable and is continually urged in a flux decreasing direction by a spring 62 which is opposed by dual oppositely arranged cantilever springs 66, 68, which have centrifugal weights 74 operating to reduce the forces of opposition of springs 66, 68 to spring 62 whereby to permit such axial movement as a function of rotor speed. As shown, the rotor 10 and stator 48 are preferably tapered, but their co-operating surfaces alternatively may be parallel with the axis of shaft 42. As shown in Fig. 1, the alternator supplies over a transformer 14, the main windings of magnetic amplifier inductors 16, 18, and rectifiers 22, 24, pulsating direct current to a load 26 which may be an electrical device controlling the engine fuel flow ; a thermocouple 28 which senses the inlet temperature of the turbine is connected to D.C. control coils 30, 32 of the inductors whereby to vary the current in load 26 and hence the fuel flow in such manner as to return the turbine inlet temperature to a safe value should it exceed a predetermined value.
Patent GB-534672-A (GB)
Title: Improvements in or relating to time piece with chronograph
IPC: G04F7/08
Filed: 1939-09-19
Abstract: 534,672. Chronographs. SOC. INDUSTRIELLE DE SONCEBOZ SOC. ANON. Sept. 19, 1939, No. 26164. Convention date, Aug. 22. [Class 139] Stop mechanism.-A time piece with a chronograph mechanism has an operative connection between the two mechanisms which includes a sun and planet differential gear under the control of a manipulative member to start, stop and re-set the chronograph indicator. The seconds spindle of the time-piece is connected by a gear train 1 ... 5 Figs. 1 and 2, to the first sun wheel 7 of the differential gear loose on a spindle 6. A second sun wheel 8 also loose on the spindle is connected to the first sun wheel 7 by a pair of planetary gears 9, 10 supported on a disc 13 secured to the spindle 6. The spindle 6 carries a heart shaped cam 14 and an indicating pointer 6a and the sun wheel 8 is formed with a disc 8a. Mounted on a shaft 15 are a pair of retaining levers 16, 17 for cooperation with the discs 8a and 13 respectively and a resetting lever 18 for co-operation with the heart cam 14. These levers are operated by a single button 19 with controlling cams 20, 21, 22; with the button in the stop position the lever 17 holds the disc 13 and planetary gears stationary; in the operative position the lever 16 holds the disc 8a and the planetary gears convey the movement to the pointer 6a.
Patent GB-417815-A (GB)
Title: Improvements in or relating to signal devices for pedestrians
IPC: G08G1/005
Filed: 1933-09-22
Abstract: 417,815. Road signals for controlling traffic. WILLIAMSON, H., 19, Alexandra Road, Swiss Cottage, London. Sept. 22, 1933, No. 26234. [Class 118 (ii).] A pedestrian signal for road crossings comprises red and green lights in the form of a cross or a single cross which can be illuminated either red or green. An amber signal may also be provided. As shown in the Figure the crosses 3 and 4 comprise series of apertures which can be illuminated from behind. The word " Pedestrians " is cut out of the front of the casing and is also illuminated.
Patent GB-353303-A (GB)
Title: Improvements in or relating to anti-dazzle devices
IPC: F21V5/00
Filed: 1930-09-03
Abstract: 353,303. Lantern fronts. WALMSLEY, E., Whispering Pines, Stockdove Wood, and FRANCIS, H. A., Birch House, Victoria Road, both in Cleveleys, Blackpool. Sept. 3, 1930, No. 26249. [Class 75 (ii).] Mounted in front of the source of light in a vehicle headlamp is a disc having one or more transparent portions, the remainder being rendered diffusing by faceted granules of material such as broken glass. An opening preferably near the upper part may be provided and partly screened by a subsidiary disc. As shown, the disc comprises two sheets 3 of celluloid or glass having a layer 4 of powdered or faceted glass between them, and spaced apart by celluloid rings 5. A circular rim 7, made of sheet metal or other material, extends two-thirds of the way round the circular opening 6 and carries at its rearward edge a translucent member 8 constructed similarly to the main disc, leaving a space between the upper edge of the member 8 and the lower edge of the main disc for the emission of a long beam of light. In a modification the subsidiary translucent disc may be formed by pressing a portion 13 of the main disc rearwardly. The set back part 8 or 13 is made with more finely divided glass than that used in the main disc. In the form shown in Fig. 7, discs 14, 15 spaced apart by rings 16, 17, 18 have broken or faceted glass 19, 20 between them, and a relatively clear portion 21 between the rings 17, 18. Attached to the disc 14 is a part-conical member 22 which projects rearwardly towards the electric bulb. A coating 24 of broken glass covers the member 22 and extends beneath the part 22 over the lower part of the clear portion 21 at 25. One or more rings 26 of coloured celluloid or other material may be placed between the discs 14, 15.
Patent GB-389155-A (GB)
Title: Improvements in hubs for bicycle wheels
IPC: B60B27/02
Filed: 1931-09-21
Abstract: 389,155. Vehicle wheels. BRIVIO, C., 9, Viale Italia, Brescia, Italy. Sept. 21, 1931, No. 26350. [Class 144 (i).] The hub of a bicycle wheel comprises a steel barrel 2 the ends of which are enlarged to form ball cups 3, and spoke-flanges 1 made of a light alloy, the flanges embodying dust screens 4 and a threaded part 5 for carrying a driving pinion.
Patent GB-482712-A (GB)
Title: Improvements in or relating to air cleaners or vacuum cleaners
IPC: A47L9/16
Filed: 1936-09-29
Abstract: 482,712. Centrifugal gas-cleaners. BROCK, C. A. Sept. 29, 1936, No. 26391. [Class 23] [Also in Group XXVIII] Air entering at the lower part of a casing 30 passes by a port 60 to a centrifugal filter 200 which separates the bulk of the dust and delivers it to a receptacle 32. The air thus partly purified is drawn by a four-stage fan 154 through the filter, and passes out through a final filter 86. The lower edge and flange of the centrifugal filter co-operate with fan blades 238 carried by the main fan shaft, which blades cause an outflow of air between the flange and the wall 136 which supports the receptacle 32 and the upper bearing of the fan shaft. The filter may be grooved, with slots at the bases of the grooves. A device 243, comprising a hub freely rotatable on the fan shaft and a pair of radial blades, is brought into rotation by air-drag and maintained in rotation by inertia, and blows deposited dust from the filter when the air flow has ceased by stoppage of the rotation of the fan and filter. In a modification, the air which has entered the filter is diverted through a bag filter beforo reaching the fan. Specification 195,141, [Class 23], is referred to.
Patent GB-1379346-A (GB)
Title: Gas-cartridge type spray gun with pressure reducing device
IPC: B05B9/08
Filed: 1973-06-04
Abstract: 1379346 Pressurised sprayer ETABS ET LABORATOIRES GEORGES TRUFFAUT 4 June 1973 [2 June 1972] 26518/73 Heading B2F [Also in Division F1]  A pressurised sprayer comprises a head portion 1 having means 3 for receiving and puncturing a gas cartridge 4 and opposite opposite means 5 receiving a nozzle holder 6 which also acts as a discharge control valve. The portion 1 is flanged to a neck portion 16 which in turn is screw connected to a wide mouthed reservoir 15. A pressure regulating portion 11 is housed in the head and a pressure relief valve 22 in the neck portion. A casing 23 comprising lateral shells clamped together round the head and neck, forms hand grips.
Patent GB-1315711-A (GB)
Title: Distributed priority of access to a computer unit
IPC: G06F12/00
Filed: 1970-06-02
Abstract: 1315711 Data processing priority systems TEXAS INSTRUMENTS Inc 2 June 1970 [24 June 1969] 26558/70 Heading G4A A data processor comprises a priority control system, Figs. 3 and 4, for controlling the access of a number of user units, e.g. 10-17, Fig. 3, to an element MO, e.g. a store, in the processor. Each unit is connected to the element via a priority unit (20-27), each priority unit comprising as many logic circuits as there are user units. Each logic circuit comprises a set of gates 50-60, only one of the eight circuits forming priority unit 20 being shown in Figs. 3. The system also included a sequence control circuit comprising a counter register 70 and a decoder 72, Fig. 4. The decoder controls the logic circuits, which in turn determine the order in which calling user units can access the element MO. The order is changed cyclically, after each accessing, under the control of the sequence circuit so that no one user can monopolize the element. Thus in the case of eight users 10-17 there is a fixed cyclic priority sequence which can be represented by 0, 1, 2 ... 7. If the sequence indicated by the sequence circuit currently starts with 0 user unit 10 has the highest priority and user unit 17 the lowest. When the highest priority calling user has accessed the element MO the sequence circuit is stepped so that the sequence now starts with 1 and ends with 0, i.e. user unit 11 has the highest priority and user unit 10 the lowest. This process continues, each user unit in turn having the highest priority. The system may be switched to operate a fixed non-cyclic sequence when required, the starting point of the sequence being selected manually by the operator. It is stated that the priority logic may alternatively be effected by software.
Patent GB-1391008-A (GB)
Title: Machine for extruding concrete slabs
IPC: B28B1/08
Filed: 1972-06-07
Abstract: 1391008 Extruding concrete slabs SPIROLL CORP Ltd 7 June 1972 [7 June 1971] 26574/72 B5A A concrete slab having bores and longitudinally extending reinforcement rods 19, is extuded on to a pallet from the rectangular downstream opening 8 of a chamber 7 mounted to a wheeled carriage 3 which is propelled along the pallet by the thrust of the concrete being extruded from the opening 8 by a plurality of augers 9. At their upstream ends the augers 9 are partly surrounded by interconnected shields 17 between which the reinforcements 19 are manually fed, through the upstream end wall 11 of the chamber to which they are each guided at an upward inclination along an upwardly inclined tube 18, or a series of spaced apart tubes or rings. The extruded slab is cut intermediate successive reinforcement lengths. The augers have cylindrical ends 15 to define the bores in the concrete, are driven by chain transmission 12 from an electric motor 13 via a gear-box 14, and have hollow interiors containing vibrators driven by motors 16 in alignment with the auger drive shafts 10.
Patent GB-482502-A (GB)
Title: Saddle for bicycles
IPC: B62J1/26
Filed: 1937-10-01
Abstract: 482,502. Saddles. JORGENSEN, V. E. Oct. 1, 1937, No. 26580. Convention date, Oct. 1, 1936. [Class 136 (iii)] In a cycle saddle comprising an approximately triangular rubber cushion formed with air spaces or channels and supported on a plate mounted on a flat spring connected to the underframe, the rubber cushion a is provided with a system of channels consisting of two channels d extending from the peak to the rear corners, and a number of parallel longitudinal channels b extending from the two channels d to the rear of the cushion, all the channels opening into the atmosphere at the rear. The cushion a is supported on a plate g, which is provided with a rear flange i, Fig. 4, adapted to retain the cushion in position. The cushion a is formed with flaps e covering the side edges of the plate g. The rear end of the plate g is supported from the underframe k on a blade spring j bent to the form of a spectacle frame, of which the highest parts of the eye-pieces and bridge are fastened to the plate g.
Patent GB-640575-A (GB)
Title: A method and apparatus for coating webs
Filed: 1947-10-02
Abstract: 640,575. Coating webs. TIME, Inc. Oct. 2, 1947, No. 26602. Convention date, Aug. 1, 1945. [Class 140] [Also in Group XIII] A web, e.g. of paper, is coated successively with at least two layers of coating material each of which is uniformly and separately distributed. The coating material is distributed by two series of rollers 52, 54, 56, 58, 62, 64, 65 and 53, 55, 57, 59, 63, 66, 67, and is applied to the web 17 as it passes over a back-up roller 25, by the applicator rolls 64, 65 and 66, 67. The two series of rolls are supplied by a common distributer roll 49 fed from a fountain 44 by a pick-up roll 45 and an oscillator ductor roll 50. Doctor devices 46, 60, 61 act upon the rolls 45, 54, 55 respectively. Since the former series takes up a greater quantity of material from the distributer roll 49, the roll 65 will apply a layer of greatest thickness, roll 66 of least thickness, and rolls 64 and 67 of intermediate thicknesses. One or more of the applicator rolls 64-67 may be driven to rotate at a different speed to the speed of the web. The rolls in the distributing mechanism may be hollow and supplied with water or similar fluid to control their temperature, and certain of the rollers may be reciprocated and the relative speeds of certain of the rollers may be varied to enhance the distribution of the layers. The web may be pre-conditioned by moisture-laden air or other gas in a tunnel 16, and after the coating has been applied may be dried as it passes round a drying drum 68 supplied with a heating medium at a suitable temperature. Hot air may be circulated round the drum 68 supplied with a heating medium at a suitable temperature. Hot air may be circulated round the drum 68 from a fan 71 through a duct 72. The hot air may be in a closed circuit including a furnace 73, or the air may be discharged to atmosphere through suitable valves and a stack 74. The coating mechanism may be mounted in a frame bearing on sliding ways 26 and may be retracted from the web by a rack-and-pinion mechanism 29, 30, 33. In a modification, Fig. 4, a single roller 75 replaces the rolls 56, 58 of the first series so that the applicator rolls 64 and 65 rotate in a direction opposite to that of the web. Such counter-rotation of the applicator rolls may also be obtained in the first embodiment by providing positive driving mechanism for certain of the rolls in either or both trains.
Patent GB-1101899-A (GB)
Title: Improvements in or relating to methods and apparatus for treating thermoplastic sheet material
IPC: D06N3/00
Filed: 1965-06-24
Abstract: Thermoplastic sheet material is embossed or perforated by heating it to a temperature above its softening point and then exposing it to pressurised jets of fluid, the temperature of the fluid being less than that of the sheet.  The fluid may be applied as a liquid, e.g. water, a gas, or a vapour such as steam, and is directed against the sheet by means of stationary perforated tubes or by means of a rotating drum carrying peripheral perforated tubes.  The sheet may be heated by passage over a drum or under radiant heater and may be embossed conventionally either before or after a perforating operation.  The sheet may be a woven fabric or may be an extruded, calendered, or cast sheet of e.g. P.V.C., a polyolefine, a polyester, a polyamide or an A.B.S. copolymer.  Such a sheet may, moreover be laminated to a gas-permeable backing layer of e.g. a woven fabric or non woven fabric such as paper, before subjecting it to the jets.
Patent GB-1189462-A (GB)
Title: Improvements in and Relating to Conveyor Systems
IPC: B65G35/00
Filed: 1967-06-09
Abstract: 1,189,462. Conveyer systems. RAPISTAN Inc. 9 June, 1967 [9 June, 1966], No. 26870/67. Heading B7L. Load-carrying platforms 24A, 24B, 24C of a conveyer each comprise two transverse members, e.g. 25b, 26b, interconnected by roller chain links 28b having running wheels 27b retained in endless tracks 12, 12<SP>1</SP> which have a loading, an unloading and an accumulating storage zone 18, 20, 22, and the platforms are propelled by spring-loaded dogs 32 pivoted to a central endless driven chain 30, mechanical (or pneumatic or electrical) control means causing a dog to engage a platform at the loading zone when loaded, disengaging the dog from the loaded platform at the unloading zone, causing a (different) dog to engage the platform when unloaded thereat, and causing a dog to engage an unloaded platform at the storage zone following loading of a platform at the loading zone so as to replace the loaded platform in the loading zone with an unloaded platform. The mechanical control means comprises two assemblies 50 and 52; assembly 50 comprises (at the loading zone 18) a pivoted spring-loaded section 12a of track connected via linkage 62, 64, 68, 70, 76, 78 and 80 to dog disengagers 84a, 84b, 86a, 86b so that engagement (and pivoting) of the pivoted section by an unloaded platform disengages the dog therefrom and also prevents any platforms leaving the storage zone, but when the platform is loaded, a dog is re-engaged with the platform and a platform is released from storage; assembly 52 (at the unloading zone 20) comprises a similar but different arrangement. The electrical control means comprises solenoidoperated dog disengagers controlled by limit switches operated by the platforms. A plate 24g on each platform disengages the dogs from abutting trollies.
Patent GB-807499-A (GB)
Title: Improvements in or relating to ignition assemblies
IPC: C06C5/04
Filed: 1957-08-26
Abstract: 807,499. Igniters for rocket motors. DU PONT DE NEMOURS & CO., E. I. Aug. 26, 1957 [Sept. 7, 1956], No. 26896/57. Class 9(1) An igniter for the propellant 2 in a rocket motor 1 comprises a detonating fuze cord 4 embedded in a mass 3 of pyrotechnic material, the cord having a metal sheath surrounding a core of 0.5 to 5 grains per foot of a high velocity detonating explosive. The igniter may be cylindrical, Fig. 1, in which case the cord 4 extends axially through the mass 3 or the igniter may be disc-like, the cord 4 being spirally arranged. An electric blasting cap 5 is attached to one end of the cord 4, the lead wires 6 being taken through the rocket nozzle. Should the propellant 2 have axial passage of circular or starshaped section, a single cylindrical igniter is placed in the passage. If the passage is cross-shaped in section, an igniter of conforming section may be used. If the propellant has no through passage, but has four wedge-shaped cavities in the peripheral curved surface, a cylindrical or wedge-shaped igniter may be placed in each cavity. The igniter of Fig 6 is formed by loading prepressed pellets of an aluminium-potassium perchlorate composition 3 into a container 7 of plasticcoated wire mesh containing a length of detonating cord or a tube 8 of metal, synthetic polymeric film or paper to receive the cord. In addition to the metal sheath, the cord may be covered with a countering of a textile or synthetic polymeric composition. The detonating explosive may be PETN and the sheath may be of lead or ductile metal alloys. For rockets to be fired in sequence, different lengths of cord connecting the rockets to a central initiation source may be used.
Patent GB-692810-A (GB)
Title: Improvements in or relating to closure means for pressure vessels
Inventor: YEWLETT GERARD JAMES
IPC: A47J27/16
Filed: 1950-11-04
Abstract: 692,810. Closures for resisting fluid pressure. PRESTONE COOKERS, Ltd. April 12, 1951 [Nov. 4, 1950], No. 26990/50. Class 123 (i). A substantially elliptical opening 3 in the top 2 of a pressure vessel 1, e.g. a digester, is closed by an internally-located closure plate 4 the periphery 5 of which is held, with the interposition of a packing ring 6, against a seating surface 7 within the vessel by a bridge member 8 extending across said opening 3. The bridge 8, which has a length less than the largest dimension of the opening 3, is resiliently mounted on a post 11 extending upwardly from the closure 4 through a helical spring 13, and it may have an integral handle 14 which, when the closure is removed from the vessel, normally lies so that one end of the bridge is disposed between two fixed stops 15 on the closure.
Patent GB-216786-A (GB)
Title: Improvements in and relating to multi-pole electric junction boxes
IPC: H02G3/08
Filed: 1923-10-30
Abstract: 216,786. Fay, F. Oct. 30, 1923. Drawings to Specification. Alloys.-Electric junction boxes are made from an alloy composed of 70 per cent of tin, 10 per cent of lead, 17 per cent of antimony, and 3 per cent of copper.
Patent GB-1140200-A (GB)
Title: Apparatus for transfer of liquefied gases
IPC: F17C7/02
Filed: 1966-06-17
Abstract: 1,140,200. Forcing liquids by gaseous pressure. SOC. ANON. DES ETABS. FENET. June 17, 1966 [June 18, 1965], No.27220/66. Heading F1R. In apparatus for transferring liquefied gas from one container to another by pumping gas from one to the other, the level of liquid in the other container being controlled by the level of the pump suction pipe, and in which detachable couplings are provided in the pipe-lines between the containers, valves and vent pipes are provided so that the pump can discharge liquid from the pipe-lines and gas may be released therefrom before they are uncoupled.
Patent GB-1245684-A (GB)
Title: Method of treating sodium bicarbonate in adiponitrile-producing reaction solution
IPC: C01D7/12
Filed: 1969-05-29
Abstract: 1,245,684. Sodium carbonate. MITSUI TOATSU CHEMICALS Inc. 29 May, 1969 [31 May, 1968; 1 June, 1968], No. 27240/69. Heading C1A. Sodium carbonate is produced from. sodium bicarbonate, which has been by-produced in the hydrodimerizing of acrylonitrile to form adiponitrile, by washing the bicarbonate in an agent comprising acrylonitrile and calcining at 70-300‹ C. During the calcination organic substances deposited on the washed sodium bicarbonate are recovered. The amount of acrylonitrile used for washing is 1-7 times the weight of the sodium carbonate by-produced and calcination is carried out for a period of from 20 minutes to 2 hours. The produced sodium carbonate is made into a heavy ash and then burnt at 250-850‹ C. to result in sodium carbonate of high purity.