baber/WOPTO huggingface dataset:
Patent GB-1354847-A (GB)
Title: Character recognition method and system
IPC: G06V30/224
Filed: 1972-03-24
Abstract: 1354847 Character recognition systems DATA CARD CORP 24 March 1972 [26 March 1971 (2)] 13860/72 Heading G4R A character to be recognized is scanned along a number of parallel paths by a plurality of sensors. When any sensor detects a change from black to white or vice versa the now existing combination of signals from the sensors causes logic circuitry to generate a corresponding signal. Recognition circuitry is responsive to particular sequences of such corresponding signals and to the inter-character space to recognize the scanned character. The characters may be embossed on a credit card and be scanned photo-electrically or by a group of five mechanical feelers, Figs. 4, 5 (not shown). When characters as in Fig. 1 are scanned the signals A-E generated by the sensors are as in Fig. 2. In one embodiment signals A-E feed gates, Fig. 7 (not shown), which in response to each combination of signals A-E produce a corresponding one of 13 signals. One of these represents lack of output from each sensor, i.e. inter-character space. In response to a particular sequence of signals from the gates a recognition circuit, Fig. 8 (not shown), provides an output on a corresponding one of 10 leads representative of the scanned character. Circuitry, Fig. 10, 11 (not shown), is included to generate an error signal if no character has been successfully recognized between the occurrence of successive inter-character space signals or if no sensor has detected a part of the character within a certain time of a preceding intercharacter space. In a second embodiment the combinations of signals generated by sensors A, C, E and B, D respectively are employed to derive signals representing so-called "leading edge ", " trailing edge ", and "central" conditions. The leading and trailing edges conditions are identified by the states of B and D towards the beginning and end of the character, and the central condition by the states of A, C and E at an instant at which B and D are both absent between the leading and trailing edge conditions. The signals identifying the three conditions are fed in parallel to gating circuitry, Fig. 24 (not shown), which identifies the character.
Patent GB-888095-A (GB)
Title: Improvements in carburetting devices for internal combustion engines
IPC: F02M1/04
Filed: 1960-04-20
Abstract: 888,095. Spray carburetters. SOC. INDUSTRIELLE DE BREVETS ET D'ETUDES. April 20, 1960 [May 5, 1959], No. 13890/60. Class 7(3). In a carburetter for internal-combustion engines, comprising a throttle valve 3 in the induction pipe 1 and also, for the control of an auxiliary starting and cold-running device, a thermostatic device influenced by a stream of hot gas, the hot gas is aspirated from two negative pressure take-off points 23, 15 situated respectively upstream and downstream of the throttle valve 3, and means are provided to ensure that at least the greater part of the quantity of hot gas aspirated at any time is aspirated by that one of the two take-off points which is subjected to the highest negative pressure. As shown, the carburetter comprises an air intake 2, a Venturi 4 into which opens the spraying device 5 for the primary mixture, and a float chamber 6 communicating with the general air intake by a tube 7. An auxiliary startitng device comprises a well 8, supplied with fuel through a jet 9. A distributer 12 ensures that fuel from pipes 10, 11 and air from orifices 13, 14 will be fed to the induction pipe downstream of the throttle 3 by the duct 15 for starting. The distributer 12 is rotated by a shaft 16 which is fixed to a bimetallic strip 17 whose outer turn is held in a cover 18. Hot gas, heated by the exhaust gases, -flows through a duct 19 into the cover 18 and is aspirated either from the duct 23 via ball valve 24, or the duct 15 via a jet 22, according to the respective negative pressure upstream and downstream of the throttle.
Patent GB-310973-A (GB)
Title: Improvements in or relating to brake servo mechanism
IPC: B60T13/68
Filed: 1929-05-04
Abstract: 310,973. Bosch Akt.-Ges., R. May 4, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Fluid-pressure. - The control valve and the actuating means therefor, for vacuum or pressure-operated brakes, are located in a housing that is detachably connected to tha cylinder. An electromagnetically-actuated valve for a vacuum brake is shown and comprises a housing n detachably secured to the base of the cylinder a and enclosing an armature m co-operating with a potmagnet l. The armature is secured to an openended tube r having apertures through its upper part. An aperture q extends through the valve casing and the cylinder base. A pipe p' is connected to the suction pipe of the engine of the vehicle. When the magnet is de-energized, the armature with its upper and lower packing discs is held by the suction in the upper position shown to close the suction pipe and the cylinder is open to atmosphere through the aperture q and the tube r. To apply the brake the switch u is closed to energize the magnet upon which the armature then seats, thus cutting off the cylinder from the atmosphere and connecting it to the suction pipe p<1>.
Patent GB-931041-A (GB)
Title: Apparatus for discharging material from an endless perforate belt conveyor
Inventor: DEXTER PETER
IPC: B65G47/76
Filed: 1961-04-18
Abstract: 931,041. Discharging endless conveyers. GARDINER'S CONVEYORS Ltd. Feb. 28, 1962 [April 18, 1961], No. 13927/61. Class 78 (1). Apparatus for discharging material from an endless belt having perforations 1a includes a plough 16 pivoted on a horizontal shaft 15. The plough has a central portion 39 for moving the material through the belt perforations and two inclined side portions 40 for deflecting material over the edges of the belt. A brush 18 is loosely mounted on the plough. The belt runs over a flat base 2 having an aperture 5 for the material. Vertical side walls 3, 4 are integral with the base and have apertures 6, 7 through which material may be discharged after having been swept off the edge of the belt. The base aperture 5 is closed by a sliding shutter 8 and the side wall apertures 6, 7'by shutters 13 pivoted horizontally on hinges 14. The shaft 15 which carries the plough 16 is also attached to arms 19, 20 which co-operate with cams 21, 22 for providing positive opening and closing of the shutters 13 dependent upon rotation of the shaft 15. Piston and cylinder assemblies operate the base shutter 8 and rotate the shaft 15, operation of a control valve 27 being such that the base shutter is caused to open at least partly before the plough has reached its operative position. Micro-switches provide for visual and/or audible warning of the position of the base shutter and the plough. All material discharged through the base aperture and side apertures is received by a hopper 38 for feeding into sacks.
Patent GB-788236-A (GB)
Title: Steel parts subjected to rolling friction
IPC: C22C38/00
Filed: 1955-05-13
Abstract: Parts subjected to rolling friction such as rails, wheel tyres or roller bearings are made of steel having a nitrogen content of 0.005 per cent or less.  Preferably the oxygen content of the steel is 0.01 per cent or less.
Patent GB-756000-A (GB)
Title: Improvements in jumpers for valves of the screw-down type
IPC: F16K1/38
Filed: 1954-05-13
Abstract: 756,000. Valves. THOMASSEN, T. May 13, 1954, No. 14009/54. Class 135. A screw-down type of valve is provided with a jumper 6 of natural or synthetic rubber with an operative face shaped as a cone having an apex angle of 90 degrees, and with a cylindrical guiding stem 4 projecting from the upper end of the jumper. A metal washer 5 is interposed between the upper end of the jumper and the lower end of the threaded operating spindle 2.
Patent GB-445151-A (GB)
Title: Improvements in or relating to sieves for hashers, mashers, rasps and similar apparatus
IPC: A47J19/00
Filed: 1935-05-13
Abstract: 445,151. Rasping-apparatus. MANTELET & BOUCHER, 11, Rue Jules Ferry, Bagnolet, Seine, France. May 13, 1935, Nos. 14065 and 14066. Convention dates, May 17, 1934 and Jan. 17, 1935. [Class 59] [See also Group VI] A sieve for use in hashing, mashing and rasping devices has apertures 19, Fig. 6, in the shape of a polygon of more than three sides with at least one wedge-shaped portion and arranged to form series separated by at least two parallel bands 21, the adjacent apertures of each surface being separated by strips 23 which meet the bands at an angle other than a right angle. As shown in Fig. 7 one side of each aperture is formed with notches separated by a tooth. The apertures shown in Fig. 8 have notches in opposite sides. The sieve may take the form of a surface of revolution and is applicable to devices in which the material under treatment is forced against the sieve by rotating blades, which contact with the sieve. Fig. 10 shows a sieve for grating cheese in the form of a cylinder which is rotated, the cheese being pressed down in a hopper 26 by a member P.
Patent GB-495793-A (GB)
Title: Improvements in or relating to the preparation and treatment of calcium saccharate solutions
IPC: C13B20/06
Filed: 1937-05-20
Abstract: In the precipitation of calcium carbonate from calcium saccharate solution, the solution is divided, one part being oversaturated with carbon dioxide in counterflow and then being united with the other part, the two parts being so proportioned that the resulting mixture is slightly alkaline.  In general 90 per cent of the solution may be treated with carbon dioxide, but if the gases used are very rich in CO2 about 80 per cent only may be so treated.  The saccharate solutions may be those obtained in the sugar industry or those formed from compounds such as dolomite by treating the calcined compound with a sugar solution to remove the lime as calcium saccharate, with recovery of magnesium oxide.  Treatment of the calcined dolomite with sugar solution, and decomposition of the saccharate solution with carbon dioxide are carried out at temperatures between 20 and 40 DEG C., say at 36 DEG  C., whereby easily settling precipitates are obtained.ALSO:In the treatment with carbon dioxide of calcium saccharate solutions obtained in the sugar industry, the solution is divided, one part being oversaturated with carbon dioxide in counterflow and then being united with the other part, the two parts being so proportioned that the resulting mixture is slightly alkaline. This method of treatment facilitates the complete precipitation of calcium carbonate.  In general 90 per cent of the solution may be treated with carbon dioxide, but if the gases used are very rich in CO2, 80 per cent only may be so treated.  The treatment is carried out at temperatures between 2 and 40 DEG  C. to obtain an easily settling precipitate.
Patent GB-1094257-A (GB)
Title: Improvements in hydrogenation catalysts
IPC: C01B21/14
Filed: 1965-04-02
Abstract: In a prolonged continuous or intermittent process for making hydroxylamine by hydrogenating nitric oxide in an acidic medium in the presence of a Pt catalyst, the activity of the catalyst is maintained by (a) preventing a deactivating accumulation of Si or a Si compound being formed or (b) by periodically decontaminating the catalyst by treatment with HF. Deactivation can be prevented by conducting the process in an apparatus composed of or lined with Si-free material, e.g. rubber, or a synthetic resin such as polyvinyl chloride, P.T.F.E. or polypropylene.  The Pt catalyst can be supported on active carbon.  The acidic medium can be H2SO4.  The reaction temperature may be 66 DEG  C.ALSO:In a prolonged continuous or intermittent process for making hydroxylamine by hydrogenating nitric oxide in an acidic medium in the presence of a Pt catalyst, deactivation of the catalyst can be prevented by conducting the process in an apparatus composed of or lined with Si-free material, e.g. in an iron vessel lined with rubber or a synthetic resin such as polyvinyl chloride, P.T.F.E. or polypropylene.
Patent GB-543752-A (GB)
Title: Improvements in electron discharge devices
IPC: H01J23/10
Filed: 1940-09-13
Abstract: 543,752. Electron oscillators. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Sept. 13, 1940, No. 14183. Convention date, Sept. 13, 1939. [Class 39 (i)] In an electron discharge device wherein a beam of electrons flows through coaxial tubes 46, 47 and past a gap 55 between these tubes the defocusing effect of the electrostatic field produced by the potentials on the tubes is reduced by a magnetic field produced between the members 52, 53, Fig. 4, adjacent the gap. The tubes 46, 47 are part of a resonant tank circuit as described in Specifications 541,477 and 543,592; the tubes may consist of copper coatings on the members 52, 53, the resonator being completed by the cylinder 48 and discs 49, 50. With an accelerator electrode 44 in front of the cathode the magnet member around it may have a gap 54 to provide a field opposing the dispersal effect of the electrode 44. With the gap 73, Fig. 5, centrally of the resonator the pole pieces 52, 53 are connected to side arms 72 ; a separate electromagnet 76 is used to provide a concentrating field in front of the cathode. In a modification where the resonator is contained within an evacuated envelope the electromagnet is outside the envelope and the pole pieces have extensions passing around the side discs and outer cylinder of the resonator. The means for suppressing secondaries described in Specification 543,592 may be used. In a further construction a number of square cathodes 80, Fig. 7, with control grids 81 send beams through grid like parts 95, 96 in the co-axial tubes, the collector electrode 82 having corresponding pockets 83. The magnetic lens is produced between the gap separating the extensions 88 of the permanent magnets 92, 93. The tank circuit includes the discs 90, 91 and the non- magnetic closure 89. An accelerator electrode 84 is placed in front of the collector.
Patent GB-1185714-A (GB)
Title: Clips and Securing Arrangements for Downpipes of Rainwater Drainage Systems
Inventor: DAVIDSON ALASTAIR RITCHIE
IPC: F16L3/12
Filed: 1967-03-29
Abstract: 1,185,714. Pipe brackets. REED GROUP Ltd. 17 April, 1968 [29 March, 1967], No. 14250/67. Heading A4B. [Also in Divisions E2 and F2]. A saddle type clip 5 made of plastics material is formed around the edge of the arcuate saddle portion thereof with an inwardly directed flange 11 provided with notches 12. In a modification, the clip is so formed as to completely embrace a pipe and there is a flange at each end of the clip and internal and intermediate flanges.
Patent GB-1299476-A (GB)
Title: Machine for tamping railway track ballast
IPC: E01B27/16
Filed: 1970-03-24
Abstract: 1299476 Railway track packing machine MATISA MATERIEL INDUSTRIEL SA 24 March 1970 [24 March 1969 19 Feb 1970] 14277/70 Heading E1G A tamping machine comprises tamping units 5 positioned on respective sides of a railway line, the vertical displacement of each unit being guided by a member 4 having one end articulated to the machine chassis 2 and the other end 9 movable transversely of the line. Unit 5 with tools 6 is moved vertically by a hydraulic jack 7 universally jointed to chassis 2. The unit carries a bearing 8 slidable on column 16 universally jointed by perpendicular shafts 11, 12 to chassis 2. Bar 17 prevents rotation of bearing 8. A ball 9 at the end of column 16 is movable by a hydraulic jack (26, Fig. 3, not shown) along a transverse slide 10 itself pivotable about a vertical axis (22) by a hydraulic jack (25). Alternatively, jack 7 and column 16 are slidable along and pivotable about bars (33, 34, Fig. 4 not shown).
Patent GB-421405-A (GB)
Title: Treatment of textile materials
IPC: A43D21/12
Filed: 1933-05-17
Abstract: Yarns and textile fibres especially such as are liable to electrification troubles are rendered amenable to textile operations such as stapling and spinning, by treatment with a liquid containing a non-hygroscopic inorganic electrolyte and a liquid of boiling point above 100 DEG  C., preferably above 180 DEG  C., such liquid including either a hygroscopic electrolyte or a hygroscopic liquid boiling above 100 DEG  C. or both.  The treatment is particularly applicable to filaments made of or containing organic derivatives of cellulose prior to these being converted into staple fibre and spun yarn.  Lithium chloride or sulphate, sodium sulphate, potassium chloride, bromide or iodide, or barium bromide are suitable non-hygroscopic electrolytes, and calcium chloride and nitrate, and triethanolamine are suitable hygroscopic electrolytes if such are employed; and diacetone alcohol, glycerol, ethylene or other alkylene glycol, diethylene glycol and other di- or poly-glycols are suitable high boiling liquids.  The liquid may also comprise softening or lubricating agents, such as oils or glycol ethers, and a quantity of water at least equal to the amount the hygroscopic substance tends to absorb from the air.  The application of the high boiling liquid and electrolyte may be carried out continuously with the production of the cellulose ester or ether filaments; or it may constitute a separate operation either on the continuous filaments or on the staple fibre or even during an intermediate stage of the operations involved in spinning such fibre.  Specifications 365,566, 365,621, 366,585, 387,004, 388,426, 388,427, 390,176, and 391,785 are referred to.  The Specification as open to inspection under Sect. 91 refers to the application of a liquid comprising an electrolyte and a high boiling liquid, mentions that the electrolyte may be an organic base or a salt of an organic acid or base, contains examples describing the application to cellulose acetate filaments during their passage to a cutting machine as described in Specification 317,026, [Class 120 (iii)], of a mixture of diethylene glycol, water and oleyldiethylethylene diamine, states that the electrolyte and high boiling liquid may be incorporated in the solutions used for spinning filaments of cellulose acetate &c., and indicates that yarns may be treated with the liquid as they are being consumed on weaving and knitting machines.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1029016-A (GB)
Title: Improvements relating to photographic type composing machines
Inventor: CROSFIELD JOHN FOTHERGILL
IPC: B41B19/01
Filed: 1964-04-07
Abstract: 1,029,016. Photographic type-composing machines. CROSFIELD ELECTRONICS Ltd. April 1, 1965 [April 7, 1964], No. 14325/64. Heading B6W. A rotatable character-matrix drum carries on its surface several alphabets of characters of different type faces, each alphabet extending circumferentially. For each type face, two circumferential rings of the drum are used, one for five-point and one for eighteen-point, and in each ring the alphabet may be replaced several times. The drum rotates past a cathoderay tube 2, the face of the tube being concave and elongated in the circumferential direction. Tho drum is also provided along one edge with register marks, spaced apart by the distance between characters in an alphabet, for sensing by a photo-electric cell 8, and along the other edge with a number of closely-spaced lines cooperating with lines on a fixed line grating to produce a vernier effect, for sensing by a photoelectric cell 10. A reader 20 serves code-signals in a control tape corresponding to characteridentification, required position of character in the line, type face and point size. The informa- , tion as to type face and point size is utilized to move the drum axially and to control the magnification of a lens respectively. The character and position information is applied to a decoder 21, which passes the character information in binding form to a counter and comparator 23 which also receives pulses from the cell 8. The count from the cell 8 corresponds to the signal from the decoder when the selected character reaches the edge of the tube 2, and a triggering signal is applied to a bi-stable circuit 26, which renders an AND gate 25 effective to pass pulses from the cell 10 to a sweep generator, which deflects the cathode-ray tube beam stepwise so as to move over the tube face in synchronism with the movement of the selected character. The position information is passed in binary form to an accumulator 22 and thence to a binary counter 31. The pulses from the gate 25 are also applied to the counter 31 and subtract from the count therein until zero is reached at the time the selected character has reached its correct location, when a zero-count signal triggers a generator 32 which applies a pulse of short duration to the grid of the tube, generating a high-intensity light flash to produce an image of the character on a film. The pulse from the generator 32 is also used to reset the circuit 26, which resets the generator 27.
Patent GB-787463-A (GB)
Title: Process for the production of salts of 3-hydroxypropane-1-sulphonic acid
Filed: 1954-05-17
Abstract: Salts of 3-hydroxypropane-1 sulphonic acid are produced by reacting allyl alcohol in the presence of finely distributed oxygen or an oxygen-containing gas or an oxidizing agent with an excess, preferably 20 to 60 per cent excess, of a neutral or slightly alkaline sulphite solution and neutralizing the alkali liberated during the reaction by continuous addition of acid, e.g. dilute sulphuric acid.  Sodium, potassium and ammonium sulphites are specified.  The oxidizing agent may be a substance which can evolve oxygen, e.g. a peroxide.  Preferably, the allyl alcohol is added slowly to the total quantity of sulphite at temperatures below 100 DEG  C. with cooling if necessary, room temperature being preferred. Higher temperatures may be used under pressure.  The allyl alcohol may be diluted with water, e.g. as an azeotropic mixture.  The speed of stirring, and the rate of delivery and quantity of oxidizing gas are adjusted to obtain maximum yield. In an example, sulphur dioxide is passed into caustic potash solution to give a solution of potassium sulphite (pH 7-8), an azeotropic allyl alcohol-water mixture is then added slowly accompanied by vigorous stirring while a current of air is introduced and the pH is maintained at 7 to 8 by continuous addition of dilute sulphuric acid; potassium sulphate is filtered off, the filtrate evaporated to dryness, and the product is recrystallized from alcohol.  Specification 782,093 is referred to.
Patent GB-821056-A (GB)
Title: Improvements in or relating to wire coiling attachments
IPC: E04H17/26
Filed: 1956-05-09
Abstract: 821,056. Tractor winches. BELL, E. C. May 9, 1956, No. 14469/56. Class 78(5). A coil of wire fencing 27 is payed out or wound off from a tractor, the coil being mounted in slots 8, 9 formed on framework 1 connected at 2, 3 to hydraulic lift links 4, 5 of the tractor and being coupled to and driven by the tractor power take-off 19. The coil 27 is wound on and around fins 23 resiliently carried by radial arms 22 pivotally mounted at 50 on shaft 20 so that the wound coil of wire is released for withdrawal when the arms are pressed inwards. The wire is secured to the fins 23 in notches 25.