baber/WOPTO huggingface dataset:
Patent GB-1179815-A (GB)
Title: Improvements relating to focussing arrangements for lenses
IPC: G02B7/30
Filed: 1968-02-16
Abstract: 1,179,815. Automatic focusing. JOS. SCHNEIDER & CO. OPTISCHE WERKE. 16 Feb., 1968 [18 Feb., 1967], No. 7645/68. Addition to 1,170,438. Heading H4D. Specification describes an improvement of the automatic focusing device described in Specification 1,170,438, wherein to overcome the fault of said device, whereupon a change of position of the optical fibre ends from a point in the focal plane 3, Fig. 1, having high contrast to a point having lower contrast causes the focusing lens to hunt even when the image is in sharp focus, the contrast of the image is additionally detected in front of the focal plane (4<SP>11</SP>, 5<SP>11</SP>) and behind the focal plane (4<SP>1</SP>, 5<SP>1</SP>, Fig. 3). Thus when the optical fibre pair ends 4 and 5, Fig. 2, are in the focal plane and detecting maximum contrast, the other two optical fibre pair ends 4<SP>1</SP>, 5<SP>1</SP> and 4<SP>11</SP>, 5<SP>11</SP> are detecting contrasts less than said maximum by equal amounts. The optical fibre pair 1 and 2, having ends 4 and 5 produce a contrast output from differential amplifier 8, via photo-electric converters 6 and 7. Differential amplifiers 8<SP>1</SP> and 8<SP>11</SP> similarly produce contrast outputs for the infront-of and behind optical fibre pair ends respectively. The outputs from amplifiers 8 and 8<SP>1</SP> are rectified at 12 and 12<SP>1</SP> and fed to differential amplifier 13. The output from amplifiers 8<SP>11</SP> is rectified at 12<SP>11</SP> and fed to differential amplifier 14 together with the rectified output of amplifier 8. The outputs of amplifiers 13 and 14 are fed to differential amplifier 15, whose output is negative, Fig. 1, when lens 10 is too far from the focal plane, is zero, Fig. 2, when the image is focused and is positive, Fig. 3, when the lens is too near the focal plane.
Patent GB-328083-A (GB)
Title: Improvements in the manufacture and production of 1.3-butylene glycol
IPC: C07C31/20
Filed: 1929-03-09
Abstract: 328,083. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). March 9, 1929. 1 : 3-Butylene glycol is obtained by hydrogenating aldol in presence of a catalyst consisting of copper, with or without the addition of other catalysts such as nickel, cobalt, or the precious metals. The catalyst may be applied to carriers such as silica gel or vitreous alumina. The catalyst may be prepared by reduction of copper silicate. Specification 311,671 is referred to..
Patent GB-659109-A (GB)
Title: Improvements relating to electric motors
IPC: H02K5/14
Filed: 1949-03-22
Abstract: 659,109. Brush-gear for dynamo-electric machines. HOOVER, Ltd., STARKEY, C. V., and PLINT, D. J. W. March 22, 1949, No. 7778. [Class 35] A moulded insulating bridge H carrying brush-holders L extends diametrically across the machine casing, has a central hole H<SP>1</SP> to clear the commutator, and is secured to the casing by screws J passing through slots H<SP>2</SP> by which the angular position of the brushes may be adjusted. The connecting tag to each brush passes through slots in the brush holder and is secured by brush-spring pressure. In a modification, the bridge may have axial flanges extending within the motor casing.
Patent GB-977312-A (GB)
Title: Improvements in or relating to bottle closures
Inventor: WOOD ARTHUR GEORGE
IPC: B65D41/48
Filed: 1960-03-04
Abstract: 977,312. Stoppers. PERMUTA CLOSURES Ltd. March 2, 1961 [March 4, 1960; April 19, 1960; April 26, 1960], Nos. 7801/60, 13687/60 and 14597/60. Heading B8T. A tamper-proof bottle closure comprises a stopper portion 1 moulded in one with a head portion 4 and a skirt 6 fitting on the interior of the bottle neck, the skirt having a tear strip 11 ending in a tab 15 which has on its inner surface a projection 16 which engages the bottle neck to hold the tab proud of the skirt to facilitate gripping thereof. The head is knurled at 5 and the skirt has a projection 7 which engages beneath a shoulder 8 on the bottle neck. The above is preferably of polythene. Specification 992,181 is referred to.
Patent GB-101277-A (GB)
Title: Improvements in Bearings for Rock Shafts.
Inventor: ROY EDWARD DAVID
IPC: F16C25/02
Filed: 1916-06-01
Abstract: 101,277. Roy, E. D. Jan. 28, 1916. [Convention date]. Adjusting for wear; worn, repairing.-To take up wear in a bearing for the rock-shafts of looms &c., a tapered bush g fixed to the shaft c and engaging a conical bearing a is adjusted endways. The bush is clamped to the shaft, together with a sleeve d, by screws e which pass through slots in the bush. A collar f or bearing at the other end of the shaft presents end movement. The bush may be used for repairing worn shafts.
Patent GB-458392-A (GB)
Title: Glass bottle
IPC: B65D1/48
Filed: 1936-03-16
Abstract: 458,392. Bottles. AREGGER, A. ISELE-. El. Tacha, Neudorf, Switzerland. March 16, 1936, No. 7826. Convention date, March 16, 1935. [Class 125 (i)] A bottle neck is protected by a sleeve 6, Fig. 1, or 8, Fig. 2, of artificial resin internally roughened or fluted to facilitate fixing as by cement. Specification 987/94, [Class 125], is referred to.
Patent GB-1496317-A (GB)
Title: Previtamin derivative and process for preparing 1alpha,25-dihydroxycholecalciferol therefrom
IPC: C07C67/00
Filed: 1976-02-27
Abstract: 1496317 Cholecaliferol derivatives WISCONSIN ALUMNI RESEARCH FOUNDATION 27 Feb 1976 [28 Feb 1975] 07890/76 Heading C2V The invention comprises 1α,25-dihydroxyprevitamin D 3 ; its preparation by uv irradiation of cholesta-5,7-diene-1α,3#,25-triol (for which see Specification 1,496,319); and its isomerization to 1α,25-dihydroxycholecalciferol, e.g. by standing in the dark or heating in a solvent. Reference has been directed by the Comptroller to Specification 1,331,011.
Patent GB-526343-A (GB)
Title: Improvements in or relating to petrol feed pumps
IPC: F02M37/08
Filed: 1939-03-14
Abstract: 526,343. Electrically-actuated pumps. BOSCH GES., R. March 14, 1939, No. 8110. Convention date, April 9, 1938. [Class 102 (i)] [Also in Groups XXXV and XXXVII] In an electromagnetically-operated petrol pump for automobiles wherein a snap spring influenced by the armature movement carries a contact for opening and closing the electric circuit, the spring 18 is mounted resiliently at its ends and the contact 19 is disposed centrally thereon to engage another contact 22a associated with the armature 20. The armature slides in a non-magnetic sleeve 12 around which is disposed the coil 13 and its covering sleeve 14 of soft iron. At diametrically-opposite points of the sleeve 14 and insulated therefrom, are fixed two flat springs 15 which carry the spring 18. A stirrup 22 fixed to the armature carries the contact 22a. Inlet and outlet valves 9, 21, are disposed at the top and bottom respectively of the sleeve 12 which encloses a spring 11a pressing the armature upwardly against a fixed stop. Recessed parts in the outer casing let receive the springs 15 and also a contact strip 17 pressing against a terminal 16. When the ignition switch is closed the coil 13 is energised and draws the armature 20 downwardly to force petrol through the outlet 1 and so that the contacts 19, 22a move downwardly and the springs 15 bend outwardly. At a certain point, the spring 18 snaps over to break the contacts. and the armature rises to draw in petrol. The parts 10-22 are mounted in a base plate 6 clamped in the casing and serving to secure a filter 5.
Patent GB-145870-A (GB)
Title: Improvements in or relating to the concentration of ores and apparatus therefor
IPC: B03D1/24
Filed: 1919-04-01
Abstract: 145,870. Minerals Separation, Ltd., (Emerson, E. H.). April 1, 1919. Surface-tension separating processes and apparatus.-In the concentration of ores by froth-flotation, a stream of mixed air and liquid from a hydro-air injector is projected into a stream of ore pulp, and the combined streams are projected violently into a body of pulp in the presence of a mineral-frothing agent to form a froth. In the apparatus shown, which comprises a number of similar units mounted in series, pulp from a feed box 4 passes through a pipe 10 into a box 20 supported above the first of a series of agitation vessels 8 and having a pipe 23 depending therefrom above a baffle 24 mounted in the vessel 8. Water is supplied from a main 14 to each of the vessels 8 through an injector comprising a nozzle 11, and a tube 19 with a flaring upper end mounted in a cup 17 having air-holes 18. The pulp flows through the entire series of vessels 8, while the concentrates overflow and run down a trough 5. In a modification, the boxes 20 are arranged to close the tops of the vessels 8, and the latter discharge into intermediate vessels from which the concentrates overflow. Specifications 7803/05, 13268/07, 14806/07, 2359/09, 21857/10 and 22346/13 are referred to.
Patent GB-512898-A (GB)
Title: A process for decorating asbestos-cement articles
IPC: B44C5/04
Filed: 1938-03-16
Abstract: 512,898. Making asbestos-cement tiles. GIBSON, W. F. March 16, 1938, No. 8173. [Class 87 (i)] [Also in Group III] Asbestos-cement tiles are heated to remove excess moisture and allowed to cool, then coated with an aqueous dispersion of a lac containing a water-soluble alkaline reacting substance, e.g., borax, ammonia, sodium and potassium carbonates and hydroxides. When the dispersion contains a pigment the alkaline substance used must not deleteriously affect it. Specified pigments are chromium oxide, manganese oxide, chromium pigments, carbon black, titanium oxide, burnt umber and chrome green.
Patent GB-711774-A (GB)
Title: Improvements in or relating to electric fusion welding
IPC: B23K9/067
Filed: 1950-03-31
Abstract: 711,774. Supply systems for welding arcs; automatic control of arc characteristics. BABCOCK & WILCOX, Ltd. March 31, 1950 [April 4, 1949], No. 8177/50. Class 38(4) [Also in Group XXII] To eliminate the magnetic blow effect of the D.C. welding current in electric fusion welding an A.C. potential is superposed on the D.C. arc and in shunt circuit relation therewith. In the system shown in Fig. 6, electrodes 35, 35<SP>1</SP> are supplied from a D.C. source 75 through a choke 76, whilst transformers 60, 60<SP>1</SP>, fed from a three-phase source 70, apply phasedisplaced voltages between each electrode- and the work 30 and between the electrodes . themselves. Condensers 77, 77<SP>1</SP> block D.C. from the secondary windings of the transformers. In modified arrangements the transformers have a Scott connection, or a third transformer in delta connection with the others is employed. Electrode positioning motors may be controlled automatically by devices 50, 50<SP>1</SP>, 55, such as are described in Specification 611,070, so as to maintain constant, but independent, arc voltages between each electrode and the work and between the two electrodes. Specification 711,828 also is referred to
Patent GB-1098223-A (GB)
Title: Method of, and apparatus for, forming thin conductive layers
IPC: C23C14/54
Filed: 1965-02-25
Abstract: In the vapour deposition of e.g. Pt, Au, Ag, Ni, Cr, Al or carbon on a base, e.g. a specimen <PICT:1098223/C6-C7/1> holder used in an electron microscope, the thickness of the deposit is continuously measured by measuring the impedance of the deposit across a gap 18 between gold coatings 14, 16 on a glass support 12.  Specimen holders 25-1 are positioned about the gap 18, and material is deposited through a shield 60, having flanges 64, 66, 68 to grip the support 12, and slidably adjustable members 70, 71.
Patent GB-693360-A (GB)
Title: Improvements in and relating to the measurement of flow of a liquid flowing in a channel
Inventor: CRUMP EDWIN SAMUEL
IPC: G01F1/00
Filed: 1950-04-03
Abstract: 693,360. Weirs. NATIONAL RESEARCH DEVELOPMENT CORPORATION. July 3, 1951 [April 3, 1950], No. 8292/50. Class 69(i) A method of measuring liquid flow over an angular-crested weir in a channel having parallel side walls comprises measuring the static pressure in the low pressure pocket of eddying liquid just downstream of the crest and also measuring the total head just upstream of the crest and evaluating the flow from these two measurements. In the form shown, Fig. 1, the downstream pressure is measured via fine boxes 7 which communicate with a duct 5 and the upstream pressure by a pilot orifice 8 mounted in one or more piers 9 and communicating with a duct 6. The ducts 5, 6 are connected to manometers or other pressure measuring devices. The pilot orifice 8 is preferably level with the crest of the weir and the slopes of the upstream and downstream faces, 1 in 2 and 1 in 5 respectively. The weir crest may be formed of a number of sections 12, Fig. 3, bolted together by the lugs 14, each section having a bore 15 communicating with an integrally formed duct 13.
Patent GB-556724-A (GB)
Title: Frequency modulation receivers
IPC: H03D3/04
Filed: 1942-06-17
Abstract: 556,724. Frequency modulation. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. June 17, 1942, No. 8324. Convention date, June 17, 1941. [Class 40 (v)] Demodulation of a frequency-modulated carrier wave is effected by applying it to an electron discharge tube or tubes which is thus caused to generate pulses at a frequency equal to, or an integral faction of, the received frequency and substantially independent of variations in amplitude, the pulses being used to discharge a condenser, the charging current of which passes through an output impedance, giving an output current which varies with the pulse frequency. In a reciprocally-coupled valve arrangement, Fig. 2, the output from a frequency changer 2 is applied to the first valve 90 and the anode resistance of the second valve 92 is in parallel with a condenser 98 and an audio-transformer 103 feeding the audio amplifier 54. In Fig. 4, the I.F. output from 2 is applied in push-pull to the grids of a pair of valves which have an inductance 68 in their common anode circuit. Current in this coil is cut off only when both valves are blocked as the I.F. voltage passes through zero, and the voltage pulses, arising at the anodes are delivered through a condenser 66 to the grid of a triode valve 118, shunted by a condenser 121. The anode circuit includes a resistance 123 and the transformer 103 feeding the AF stage 54. In Fig. 1 the I.F. output is applied in push-pull to the first and second grids of a pentode valve 74, one or the other of which blocks the anode current except as the I.F. voltage passes through zero. On each such occasion, the condenser 86 which has been charged through the AF transformer coil 85, discharges through the valve. Circuits of the blocking oscillator type may be used for generating pulses at the intermediate frequency, the pulses being applied to the grid of a valve which shunts the condenser, Figs. 3 and 5 (not shown). The Specification as open to inspection under Sect. 91 also describes the circuit shown in Fig. 1 (Cancelled) in which the output from 2 is applied in push-pull to the outer grids of a pair of valves 14, 25 which have their anodes reciprocally coupled to the inner grids. The pulses produced in the anode circuits are passed through a transformer 42 and double rectifier 50 to charge a condenser 52 across which an audio amplifier 54 is connected. In an alternative arrangement, the valve anodes are connected to each other and through a condenser to a single rectifier, Fig. 2 (Cancelled) (not shown). This subject-matter does not appear in the Specification as accepted.
Patent GB-357117-A (GB)
Title: Portable electric lamps
IPC: F21L4/00
Filed: 1930-03-14
Abstract: 357,117. Electric battery lamps. COMPAGNIE GENERALE D'ELECTRICIT, 54, Rue la BoÙtie, Paris. March 14, 1930, No. 8345. Convention date, March 26, 1929. Void [Published under Sect. 91 of the Acts]. Drawings to Specification. [Class 39 (ii).] A portable electric battery lamp has collars, bands, or studs of rubber &c. secured to or fitted in grooves in the casing to take up shocks. A lamp may be supported on a soft rubber or like base fitted on the end of the casing.
Patent GB-589944-A (GB)
Title: Method for the manufacture of silica-free double fluoride of aluminium and sodium
IPC: C01F7/54
Filed: 1945-04-05
Abstract: Silica free double sodium aluminium fluoride 2AlF3-3NaF is produced by (1) heating a 100 to 200 gms. per litre aqueous suspension of sodium fluosilicate with hydrated alumina at about 80 DEG C. preferably by steam injection (2) mechanically separating the light silica suspension produced from the heavier settled double fluoride (3) removing residual silica with hydrofluoric acid and (4) filtering, washing and drying.  The separation may be performed by repeated or continuous decantation or by flotation, classification or shaking table methods.  The hydrofluoric acid used may contain silica, e.g., from fluospar. Recovered silica may be used to prepare sodium fluosilicate. Specification 12,626/13, [Class 1 (iii)], is referred to.  The Specification as open to inspection under Sect. 91 discloses the use of the silica as an agricultural insecticide, a shoe polish filler, in glass making or aluminium/silicon alloys &c. This subject-matter does not appear in the Specification as accepted.ALSO:The Specification as open to inspection under Sect. 91 discloses the use of dried by-product silica containing 5-25 per cent. of chlorite, from the reaction of alumina with sodium fluosilicate, as an agricultural insecticide.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1325643-A (GB)
Title: Modular building toy
IPC: A63H17/44
Filed: 1972-02-23
Abstract: 1325643 Toy building sets A E GOLDFARB 23 Feb 1972 [25 Feb 1971] 8442/72 Heading A6S A toy building set comprises flat panels 11, Fig. 1, each with small holes 21, 27, 29 and a large hole 31 through it, separate columns 37, Fig. 3, for insertion in the small holes 21, &c., to support the panels horizontally, and a ramp 32, Fig. 8, to be releasably engaged in the large hole 31 of one of the panels. The building set is erected to form a multi-level toy garage, Fig. 4. The holes 21, &c., Fig. 1, are surrounded by integral sleeves 24, &c., Fig. 2, into which are fitted the reduced ends 39 of the columns 37, Fig. 3; the opposite ends 45 of the columns are hollow and of sufficient size to fit over the sleeves 24, &c. Two columns may be joined end-to-end by the use of an adapter sleeve (47), Figs. 5, 5A (not shown). A connector 87, Fig. 6A, may be placed with is large end 89 over a sleeve (23), Fig. 6 (not shown), on one panel 11, so that its small end 91 may be inserted into a small hole 21, &c. on another panel 11 above, thus holding the two panels in cantilevered engagement. The large hole 31 in each panel 11 is surrounded on two sides by walls 35, 36, Fig. 8, and the ramp 32 has a lug 80 engaged with the end of the wall 35 to permit pivoting of the ramp. Upstanding tabs 34, Figs. 1, 2, spaced inwards of edge walls 13, 15 extending both above and below the plane of each panel 11, provide gaps into which may be friction fitted toy notice boards 40, Fig. 8, having slim tongues to engage between the tabs and walls. Additional notice boards 69 can be fitted over the sleeves 23, &c. The holes, sleeves 23, &c. may alternatively be square or star shaped in crosssection. The panels 11 may be moulded from plastics. The toy garage shown in Fig. 4 has a baseplate 53 of cardboard, plastics, &c., but may alternatively stand directly on a supporting surface.
Patent GB-574048-A (GB)
Title: A process for the production of gas mixtures containing carbon monoxide and hydrogen
IPC: C01B3/32
Filed: 1940-05-10
Abstract: 574,048. Combustible gas mixtures. STEINSCHLAEGER, M. May 10, 1940, No. 8445. Divided out of 573,925. [Class 55 (ii)] A gas mixture suitable for use in the Fischer- Tropsch process is obtained by heating a mixture of water gas, hydrogen; and coke oven gas in the presence of a cobalt or nickel catalyst at between 160‹ and 250‹ C. to produce an oil and a residual gas which is heated with steam at between 1200‹ and 1450‹ C. This product is then mixed with water gas and a gas obtained by heating water gas with steam at between 400‹ and 550‹ C. and separating carbon dioxide, and the resulting gas contains carbon monoxide and hydrogen in the proportion of 1 to 2. The cobalt, nickel or iron catalyst is activated with thoria. The gases employed should be substantially free of sulphur.
Patent GB-726706-A (GB)
Title: Improvements in and relating to heart catheters
IPC: A61M25/00
Filed: 1953-03-27
Abstract: A heart catheter, made of synthetic resin such as polyvinyl chloride, is formed by extruding or spraying over a wire and smooth internal and external surfaces are achieved by the addition of a suitable plasticiser.  A metallic connecting piece is inserted in one end of the tube and the other end is left open instead of being sealed except for a lateral orifice.  The front end of the tube is preferably graduated to allow the depth of insertion to be observed.
Patent GB-245644-A (GB)
Title: Combined thrashing and husking machine for corn and other grain or seeds
IPC: A01F12/44
Filed: 1925-03-31
Abstract: 245,644. Casali, A. March 31, 1925. Thrashing-machines. - A thrashing and husking machine comprises a grid beater 1, straw shaker 2, grain and chaff collecting trough 3, and sievebox 4, from which the corn passes to a milling device 10 consisting of a beater with counter-beater of steel wire cloth. A fan 5 is provided with two nozzles 7 and 9 directing blasts of air to the trough 3 and hopper 12. The corn then passes to a further cleaning-box 13 and rotary sieve 14.
Patent GB-325719-A (GB)
Title: Improvements in inner air tubes for pneumatic tyres
IPC: B60C5/20
Filed: 1929-03-18
Abstract: 325,719. May, E. March 18, 1929. Air tubes and chambers. - The air-chamber comprises an outer tube 2 divided into inner and outer compartments 5, 3 by a circumferential partition 8 and radial partitions 6, 4, and an inner continuous tube 1. The tube 2 is first inflated, the communicating passages 7, 9 between the compartments being then closed by inflation of the inner tube 1.
Patent GB-1197952-A (GB)
Title: Improvements in or relating to Hole Boring Tools
Inventor: FARR SYDNEY GEORGE
IPC: B23B51/00
Filed: 1967-02-23
Abstract: 1,197,952. Tapered reamers. MARCONI CO. Ltd. 9 Jan., 1968 [23 Feb., 1967], No. 8636/67. Heading B3C. A reamer 1 whose taper is 1 in 10, has an end milling portion 4, and a screwed portion 3.
Patent GB-127897-A (GB)
Title: Apparatus for Regulating the Depth of Immersion of Submarine Mines.
Inventor: REY JEAN
IPC: F42B22/10
Filed: 1917-06-16
Abstract: 127,897. Rey, J. June 16, 1917. Mines, marine.-Relates to mines adapted to sink to the bottom with their anchors when launched, and then to rise to the desired depth under the control of a hydrostatic device carried by the mine. According to the invention, the hydrostatic device is released and allowed to fall away after the mooring operation is completed; and when the drum for the mooring-cable is carried by the mine, this drum is simultaneously released and dropped. In the form shown in Fig. 1, the mooring-drum B and the hydrostatic device F are both carried by a member E which is attached by a bolt D to the mine A. When the mine rises from its anchor K and reaches the desired depth, the mooring-cable I is clutched by jaws G controlled by the hydrostatic device; the bolt D is then released, allowing the member E to fall, while the jaws G are held to the mine by a short length of cable T attached to the mine at H. The bolt D is pulled by a spring N when released by a soluble plug 0, as shown in Fig. 5; or the bolt D is pulled by the short length of cable T. In modifications, the cable drum is on the anchor, for example as described in Specification 13807/13.