baber/WOPTO huggingface dataset:
Patent GB-992578-A (GB)
Title: An improved circuit arrangement for correcting the position of the scannng patch ina flying-spot-scanner character reader
Inventor: JARRETT JOHN JAMES
IPC: G06V30/146
Filed: 1960-08-30
Abstract: 992, 578. Automatic character reading. ELECTRIC & MUSICAL INDUSTRIES Ltd. Aug. 28, 1961 [Aug. 30, 1960], No. 29805/60. Heading G4R. In character reading apparatus there are means for scanning the character and means for obtaining "black" signals during two predetermined periods of the scan at the top and bottom ends and means responsive to differences in integrated black signals in the two periods for changing the position of the scan raster so as to register with the character. Figs. 3a, 3b show the relationship between sampling pulses P 1 , P 2  and the parts A 1 , A 2  of the waveform of the output of a photomultiplier, when a scanned character is symmetrically located relative to the scan, parts A 1 , A 2  corresponding to the unmarked white portions above and below the character which are scanned. In the arrangement of Fig. 4 the photomultiplier output is applied via amplifier 1 to a stage 2 which fixes the upper and lower levels of the signal. The output is fed to two AND gates 3, 4 to which are applied respectively sampling pulses P 1 , P 2 . If a 'black' signal occurs at the output of the photomultiplier while pulse P 1  and/or pulse P 2  is being applied to the gates, indicating a misalignment of the raster and the character, an output will be derived from gate 3 and/or gate 4 and will be fed through integrators 5, 6 and peak rectifiers 7, 8 respectively to a differential amplifier 9, the output from which is applied to the scan generator to alter the relative position of the character and the raster in such a direction as to locate the character symmetrically with respect to the raster. In an alternative arrangement, Fig. 6, two-state devices 15, 16 are used, devices 15, 16 being triggered into their '1' state by the occurence of a 'black' signal during the duration of pulses P 1 , P 2  respectively, and are returned to their 'O' state respectively in response to the end of pulse P 1 , detected by an end gate 13, and to the end of a black signal detected by an end gate 14. When in their ' 1' state, the outputs of devices 15, 16 are connected through circuits 5, 7 and 6, 8 respectively, as before, to differential amplifier 9 to alter the position of the raster relative to the character. Other arrangements, not shown, for deriving scan position correcting signals are described.
Patent GB-409298-A (GB)
Title: Improvements in or relating to radio direction determining systems
IPC: G01S11/10
Filed: 1932-10-25
Abstract: 409,298. Wireless signalling. ELECTRICAL RESEARCH PRODUCTS, Inc., 195, Broadway, New York, U.S.A.-(Assignees of Englund, C. R. ; 54, Court Street, Freehold, New Jersey, U.S.A.) Oct. 25, 1932, No. 29815. Convention date, Nov. 19, 1931. [Class 40 (v).] The direction of a moving craft 3 relative to two fixed transmitters 1, 2 is determined by the apparent frequency-change produced at the receiving apparatus by the Doppler effect as the craft moves through the electromagnetic field towards one or other of the transmitters. If the direct course corresponding to the line r is maintained, the pilot will hear either a zero or minimum frequency-difference between signals received simultaneously from the transmitters 1, 2, according to whether the latter transmit waves of identical or different frequency. Any yawing movement or divergence in either of the directions r1 or r2 will create a change in the beat-note frequency and so give an indication to the pilot. Reference has been directed by the Comptroller to Specifications 271,508 and 273,754, [both in Class 40 (v)].
Patent GB-1499028-A (GB)
Title: Process of forming wet laid tufted non-woven fibrous web and tufted product
IPC: D21H27/00
Filed: 1975-07-16
Abstract: 1499028 Non-woven fabrics DEXTER CORP 16 July 1975 [17 July 1974] 29859/75 Headings D2A D2B and D1K A process for producing a tufted non woven fibrous web uses a fibre-collecting element 10 having a smooth surface 18 from which a multitude of apertures 16 with sharply defined edges extend. Fibres are deposited from a fluid dispersion on the surface 18 and in the apertures 16 to form tufts. The fluid is preferably aqueous with a viscosity of about 1 centipoise but this may be increased to about 300 cP to promote laminar flow with different fibre materials and lengths and different size apertures. A differential pressure may be applied across the element 10. After the tufts have been formed they may be consolidated, for example by a fluid sprayed from a nozzle 26 while the web is backed by a screen 28. The process may be carried out on a machine as shown in Fig. 5 to produce tufts on both sides of the web. Rotating drums 50 have apertured surfaces 52 and suction boxes 54, 56. Fluid jet nozzles 58 are used to consolidate the tufts before they are separated from the surfaces 52. A supporting scrim or continuous filaments may be fed in through a central feed chute 44.
Patent GB-931074-A (GB)
Title: Process for reacting oxygen with cyclohexane
Filed: 1959-09-02
Abstract: Liquid cyclohexane is oxidised by passage therethrough of oxygen or an oxygen-containing gas in the form of bubbles having a diameter of at least 6 mm. to produce cyclohexanol and cyclohexanone.  The diameter of the bubbles may be 20 mm. or more, and the reaction may be carried out at increased temperature and pressure and in the presence of a heavy metal catalyst, e.g. copper or cobalt oleate or naphthenate.
Patent GB-488978-A (GB)
Title: Electric wave filters
IPC: H03H1/00
Filed: 1937-11-02
Abstract: 488,978. Impedance networks ; inductances. LORENZ AKT.-GES., C. Nov. 2, 1937, No. 29978. Convention date, Nov. 3, 1936. [Class 40 (iii)] [Also in Group XXXV] In a separator for use at subscribers' stations for filtering telephone currents from radiofrequency currents, comprising inductances with hollow cores of high-frequency iron threaded on a common spindle, and provided with a base plate 1, preferably of moulded insulating material, the inductances in the high-pass and low-pass portions are located on opposite sides of the condensers. The condensers for both the high-pass and the low-pass portions of the separator are housed in a casing 4 screwed to a strap 3. The inductances for the low-pass portion are threaded on a spindle 7 supported on arms 8, and those for the high-pass portion are threaded together with a transformer 15 on a similar spindle 18. An insulating plate 21, inserted between the inductances, carries soldering-tabs 22 for the internal connections, and terminals 2 are provided for the external connections. A cover 19 fits over a beading 26.
Patent GB-836474-A (GB)
Title: A new or improved mechanism for delivering small objects or granular materials at a controllable rate
Inventor: TOPE EDWARD RICHARD
IPC: A01C7/12
Filed: 1957-09-26
Abstract: 836,474. Seed sowing machines. TWOSE (MANUFACTURING) Ltd., E. V. Aug. 19, 1958 [Sept. 26, 1957], No. 30253/57. Class 6(1). A seed sower comprises a hopper 1 from which: seed is delivered into a number of chambers 3, each comprising a rotatable sleeve 10 formed with a collar 11 through which protrudes a number of rods 28 which are fixed to a disc 29 in a shaft 15 which is axially adjusted by means of a lever to vary the depth of penetration of the rods 28 into the chamber 3 and so vary the amount of seed discharged through an outlet 14 and tube. The tubes are connected to tines mounted on a tool bar assembly 24 connected to lifting and lowering arms 25, 26 of a tractor 27. The shaft 15 is driven through a gear box 16 by means of a shaft 17 driven from a landwheel 20 by means of gearing 22.
Patent GB-414094-A (GB)
Title: Improvements in and connected with aluminium alloys
IPC: C22B21/06
Filed: 1932-10-28
Abstract: Alloys are obtained free from occluded gases, particularly oxygen, by melting them or their constituents in a non-oxidizing atmosphere in the presence of a reducing agent such as carbon. The non-oxidizing atmosphere may be obtained by combustion of a hydrocarbon within a closed vessel containing the metals, and the reducing agent may be the carbon so formed or may be separately added.  Two or more constituent metals of an alloy may be combined by the process and the product subsequently combined with the remaining metal or metals. The production of alloys of zinc and magnesium is referred to, particularly an alloy for reflectors consisting of about equal proportions of zinc and magnesium.  A zinc-magnesium alloy obtained in this way may be added to molten aluminium to form an intermediate alloy which is subsequently added to a main portion of aluminium. Reoxidation of the alloys during subsequent recasting may be avoided by melting and casting them by the Durville process.
Patent GB-339407-A (GB)
Title: Improvements relating to the mounting of warp beams in weaving looms
IPC: D02H13/28
Filed: 1929-10-07
Abstract: 339,407. Hynd, P. D., Kinmond, D. N., and Lee, W. J. Oct. 7, 1929. Warp beams; warps, tensioning and guiding.- In looms for weaving jute and other plain fabrics, the warp beam 1 is mounted above and in the same vertical plane as the back rail 2, the warps being led downwardly and backwardly from the beam, under the back rail, and between the reeds 4 to the usual cloth beam 5. The warp beam is raised into use by brackets 6 each formed with a notch 7 adapted to receive one end of the beam shaft 8.
Patent GB-893898-A (GB)
Title: 3-indolylsuccinimides
IPC: C07D403/04
Filed: 1960-09-02
Abstract: The invention comprises compounds of the formula <FORM:0893898/IV (b)/1> (wherein R is hydrogen, alkyl, dialkylaminoalkyl, (N-morpholino)alkyl or (2-pyridyl)-alkyl, each alkyl group containing at most 5 carbon atoms) and acid-addition salts thereof when R is not hydrogen or alkyl; and their preparation by reacting 3-indolyl-succini acid with urea, 1,3-dialkylureas or the amine NH2R. Examples are given and salt-forming organic and inorganic acids are referred to.  Specification 893,899 is referred to.
Patent GB-626328-A (GB)
Title: Improvements in or relating to hitch mechanism for tractors
IPC: B60D1/44
Filed: 1946-10-14
Abstract: 626,328. Stud-and-socket fastenings. FERGUSON Inc., H. Oct. 14, 1946, No. 30500. Convention date, Oct. 13, 1945. [Class 44] [Also in Group XXXII] A tractor hitch mechanism comprises a housing on the tractor provided with a slotted hole to receive an upwardly insertable pivot pin having lateral projections capable of passing through the slots and means for locking the pin against rotation in a turned position with the projections supported within the housing and out of register with the slots. The housing 37 is apertured at 38, 39 to receive the pin 19 which is slotted at 35 and provided with a laterally projecting pin 36 to support a spring-loaded pivoted latch 40. The pin 19, with the latch 40 in the dotted position shown in Fig. 5, is inserted upwardly through the slotted hole 38, 39 and rotated to the position shown in Fig. 6 with the projections of the pin 36 supported by the lower face of the housing 37. Rotation of the pin 19 is prevented by swinging the latch 40 into engagement with a slot 41 in the housing 37.
Patent GB-227587-A (GB)
Title: Improvements in or relating to tennis and like racquets
IPC: A63B51/12
Filed: 1923-12-05
Abstract: 227,587. Addis, F. H. Dec. 5, 1923. Rackets.-The frame of a tennis or like racket is divided at a point oppositely removed from the handle tc constitute two separate curved limbs, and screw or other manually operable means are incorporated at the division to thrust the limbs apart and thus to tighten the stringing. As shown in the Figure, the head of the racket frame is divided and blocks c are fitted to the adjacent ends. A screw b<1> with oppositely-threaded ends screws into the blocks, and when rotated in the correct direction by means of a centre-piece b forces the limbs of the frame apart and thus tightens the stringing. The blocks may have inwardly extending parts through which the stringing may pass. A few inches from the screw b<1> a hinged, wired, rebated, or other pivotal joint may be made in each limb of the frame to allow additional freedom to the end portions. In a modification, the two-part screw b<1> is replaced by a single-ended screw working in one block and pressing against the other. In a further modification, a worm and worm wheel are used to rotate the screw b<1>, whilst in another modification the frame is expanded by toggle links tightened by a screw. In a further modification the frame is expanded by a wedge operated by a screw. Locking means may be provided to hold the expansion device after adjustment.
Patent GB-1145582-A (GB)
Title: Bulk semiconductor light radiating device
IPC: H01L33/02
Filed: 1967-07-03
Abstract: 1,145,582. Electroluminescence. RADIO CORPORATION OF AMERICA. 3 July, 1967 [2 Nov., 1966], No. 30548/67. Heading C4S. A light radiating device comprises a body 10 of N-type GaAs having a resistivity of 0À01 to 0À1 ohm cm. and a mobility of about 5000 cm.<SP>2</SP>/ volt sec. and means 13 for applying an electric field exceeding a threshold value whereby light is emitted from the body. A pulse generator 13 is connected across a GaAs element doped with Se or Sn. The device may be used in pulse-codemodulated communication systems, surveillance and mapping radar or for sensing non-turbulent air if infra-red radiation is emitted.
Patent GB-1155907-A (GB)
Title: Improvements in and relating to The Pyrolysis Of Urea
Inventor: SHIPLEY DAVID GRAHAM
IPC: C07C273/18
Filed: 1967-07-03
Abstract: 1,155,907. Cyanuric acid. IMPERIAL CHEMICAL INDUSTRIES Ltd. 29 May, 1968 [3 July, 1967], No. 30576/67. Heading C1A. [Also in Division C2] Urea is pyrolysed, to give cyanuric acid and other autocondensation products such as triuret and biuret, in one or more reactors and the ammonia/cyanic acid mixture driven off from the reactor(s) is contacted with a urea melt by passing said urea melt and said ammonia/ cyanic acid mixture countercurrently to each other through one or more gas/liquid contacting chambers, which are vertically-disposed above the reactor(s) and which comprise a plurality of horizontally-disposed perforated plates whose temperature decreases from the bottom to the top of the tower, said urea melt being urea (of which at least a part of the autocondensation products thereof has been separated therefrom) which is being recycled to the reactors) or fresh urea which is being added thereto, or a mixture of the two.
Patent GB-481417-A (GB)
Title: Improvements in and relating to the scutching wheel or wheels of a decorticating machine
IPC: D01B1/10
Filed: 1937-11-08
Abstract: 481,417. Lubricating. STORW & CO'S. APPARATEN-FABRIEK N. V., GEB. Nov. 8, 1937, No. 30643. Convention date, Oct. 21. [Class 12 (iii)] [Also in Group IX] In a scutching wheel 1 for decorticating or depulping fibrous leaves or other plant parts and which is freely revoluble about a shaft or sleeve 8, the hub 3 forms an oil reservoir and the shaft or sleeve carries a radial pipe or pipes 14, 15 which open rearwardly into the reservoir at a distance from the sleeve. On rotation of the wheel the oil in the hub 3 is thrown outward and is forced through the pipes 14, 15 and the passages 12, 13 into the annular chambers 10a, 11a and from thence along the oil grooves in the bearing surfaces of the bushes 6, 7 and back to the hub 3.
Patent GB-306558-A (GB)
Abstract: 306,558. I. G. Farbenindustrie Akt.- Ges. Feb. 23, 1928, [Convention date], 2-Mercaptoarylenethiazoles are prepared from alkylenethiazthionium compound;- obtainable by the action of disulphurdichloride on a primary aromatic amine and of the probable general formula where R indicates an arylene group, substituted or not, and X, -Ce or -OH, by gentle heating with an alkali and a salt of a thiocarbonic acid of the general formulawhere X indicates -0-alkali metal, -0-alkyl, or - S-alkali metal. Mixtures of compounds which would produce such thiocarbonic salts may be employed in place of the salts themselves, such as carbon disulphide and alkali sulphide, or carbon disulphide, alkali and alcohol, or carbon disulphide and .alkali. It is an advantage to add a reducing agent such as hydrosulphite, but if sulphides are present no other reducing agent is needed. The products, which are of use for pharmaceutical purposes, as dye intermediates, or as vulcanizing accelerators, are represented by the general formulain which R indicates an arylene residue substituted or not. Examples show the preparation of 2-mercapto derivatives of 4-methyl-6-chlorbenzothiazole, 6-ethoxybenzothiazole, 4-methoxy-6- chlorbenzothiazole, a(5)-naphthothiazole, 8- chloro-a(N)-naphthothiazole, 6.6<1>-dibenzothiazole and 4-carboxyl-6-phenylaminobenzothiazole, from the corresponding thiazthionium compounds (which are prepared by the process of Specification 17417/14; see also Specification 265,641). The Specification as open to inspection under Sect. 91 (3) (a) refers also to the preparation of 4: 6-dichlorbenzothiazole, and 4-carboxy-6-chlorbenzothiazole and 6-acetaminobenzothiazole from the corresponding thiazthionium compounds. This subject-matter does not appear in the Specification as accepted.
Patent GB-897513-A (GB)
Title: Improvements in or relating to tachometer generators and frequency sensitive a.c. systems
IPC: G01P13/04
Filed: 1958-09-25
Abstract: 897,513. Electric indicating systems. SANGAMO WESTON Ltd. Sept. 25, 1958 [Sept. 27, 1957], No. 30695/58. Class 40 (1). [Also in Groups XXXVI and XL (c)] Apparatus for determining the speed and direction of rotation of a tachogenerator 10 (Fig. 1), having two windings 11, 12 giving voltages displaced by 90 degrees comprises two saturable core transformers 13, 14, each with two input windings 16, 17 and 18, 19, windings 17, 19 being connected in series opposition with winding 12 of the tachometer 10, and windings 16, 18 being connected in series aiding with winding 11 of the tachometer and a capacitor 23, whereby for one direction of rotation the flux in the core of transformer 13 is effectively zero and that in the core of transformer 14 is sufficient to saturate it, producing a series of pulses in secondary winding 22 which are rectified at 29 and fed to a meter 31 to produce a deflection in the one direction proportional to the speed or frequency of pulses, and conversely, for rotation in the opposite direction, the flux in the core of transformer 14 is effectively zero and transformer 13 is saturated to produce pulses which  are rectified at 28 to produce a deflection of meter 31 in the opposite direction, proportional to the speed or frequency. The output from rectifier bridges .28, 29 may alternatively be fed to a resistance bridge 36 (Fig. 6), producing similar deflection of a single-coil meter 41. The apparatus may be used to determine the frequency of an alternating current or of two alternating currents which may be in phase or out of phase, and the frequency and phase relationship of two alternating voltages with 90 degrees phase difference.
Patent GB-410016-A (GB)
Title: Purifying zinc metal
IPC: C22B19/04
Filed: 1933-11-04
Abstract: 410,016. Distilling. NEW JERSEY ZINC CO., 160, Front Street, New York, U.S.A.- (Assignees of Ginder, P. M., Mahler, G. T., and Cyr, H. M. ; Palmerton, Pennsylvania, U.S.A.) Nov. 4, 1933, No. 30700. Convention date, Jan. 10. [Class 82 (i).] In a process for purifying zinc by redistillation, the vapour from the treatment of impure zinc in a retort is passed through a reflux column, and the molten zinc collected at the bottom of the reflux column is subsequently purified in another retort, preferably itself connected to another reflux column. Impure zinc containing lead is fed at 15 into the first retort 10 of a series and the zinc vapour produced passes by a pipe 16 into a reflux column 19 up which it passes and meets a descending stream of molten zinc. The purified zinc vapour passes by a pipe 22 to a condenser 25. The molten zinc passes from the bottom of the column 19 by a pipe 28 into a second retort 11 and the process repeated. The zinc vapour passes into a second column 20 and the molten zinc passing by a pipe 29 into a third retort 12, the vapour to a condenser 26. When three retorts are used the molten zinc from the third column may be returned to retort 12 or may be separately collected. The pipes 16, 17, 18 may enter their respective reflex columns at different levels. When beating zinc containing cadmium, the metal is treated in one pair of retorts 31, and the vapour passes into the reflux columns 35, one for each retort. The reflux zinc flows from the bottom of the columns by a pipe 38 to retorts 32. The purified zinc is tapped from the retort 32 through a hole 39. Specifications 392,361, 395,602, and 397,061 are referred to.
Patent GB-1146542-A (GB)
Title: Improvements in magnetic resonance magnetometers
Inventor: SALVI ANTOINE
IPC: G01R23/10
Filed: 1966-07-08
Abstract: 1,146,542. Magnetometers. COMMISSARIAT A L'ENERGIE ATOMIQUE. July 8, 1966 [Feb.4, 1966], No.30701/66. Addition to 1,083,266. Heading G1N. A gyro-magnetic resonance magnetometer of the type described in Specification 1,083,266 comprising a first probe including subatomic particles of gyro-magnetic ratio y' and a second probe including subatomic particles of gyromagnetic ratio y" is disposed in the tail of an aircraft, the probes being positioned at points having respective permanent parasitic magnetic field strengths ha, hb respectively such that the relation y'ha = y"hb is satisfied, whereby the effect of the permanent parasitic field may be cancelled out.
Patent GB-957025-A (GB)
Title: Improvements in or relating to charging surfaces for xerography
IPC: G03G15/02
Filed: 1960-09-06
Abstract: 957,025. Electrophotographic materials. RESEARCH LABORATORIES OF AUSTRALIA Ltd. Sept. 6, 1960 [Sept. 9, 1959], No. 30702/60. Drawings to Specification. Heading H1K. [Also in Division H5] The invention is concerned with a charging method for electrophotographic plates (see Division H5). Electrophotographic materials specifically described consist of any suitable paper backing bearing a photoconductive layer in which the binder is a short oil linseed oil modified alkyd resin containing lead and cobalt naphthenates and in which the photoconductor is zinc oxide, amorphous selenium powder, lead monoxide, or cadmium oxide. In general passages other backing materials are mentioned such as paper impregnated with a conductive liquid, and paper or glass having vapour deposited metallic coatings. It is stated that the photoconductive layer acts as a rectifier if an alternating corona is used to charge the material.
Patent GB-1396078-A (GB)
Title: Combine harvesters with pivotable cutting platforms
IPC: A01D41/14
Filed: 1973-06-28
Abstract: 1396078 Combine harvesters MASCHINENFABRIK FAHR AG 28 June 1973 [30 June 1972] 30734/73 Heading A1F The pivoted cutting platform 3 of a combine harvester is raised or lowered by at least one hydraulic jack 5 according to the setting of a valve 13 which is operated in response to electrical signals generated by one or more strain gauges 9 which are mounted on one or more resilient crop raisers 7. Bending forces are transmitted from the front end of the crop raiser(s) to the gauges and thence via a logic system amplifier 11 to operate the valve, e.g. by electromagnets 7. Crop raiser deflection is dampened to prevent gauge damage. A manual override button is provided.