baber/WOPTO huggingface dataset:
Patent GB-807390-A (GB)
Title: Improvements in or relating to electric discharge tubes
IPC: H01J19/50
Filed: 1957-03-18
Abstract: 807,390. Discharge tubes. PHILIPS ELETRICAL INDUSTRIES Ltd. (Philips Gloeillampenfabreiken N. V.) March 18, 1957 No. 8812/57. Class 39(1). In a discharge tube having at least two electrodes carried by disc-like supply conductors, the conductors being of or coated with titanium or zirconium and being spaced apart by a cylindrical insulator which is also part of the tube wall, the abutting disc-to-insulator surfaces are sealed together over a part of their area only. In Fig. 1 the anode-carrying disc 8, the grid-disc 7 and the cathode-disc 6 are separated by ceramic envelope parts 10, 9, 11. Between the adjoining surfaces is placed silver foil of less width than the ceramic parts, so that after the seal is formed the sealed portion, as shown at 13, extends only part of the way across, disc and ceramic being in direct abutting contact over the remaining part. An alternative construction is shown in Fig. 4, the electrode support disc 15 being separated from an outer ring 16 of the same material by a copper or silver sealing ring 19. In this case the seal is made in the centre of the ceramic parts 9, 11 instead of at one end.
Patent GB-199797-A (GB)
Title: Improvements in feed mechanism applicable for key seating machines
IPC: B23D3/02
Filed: 1922-03-28
Abstract: 199,797. Richards & Co., Ltd., G., and Wilson, F. W. March 28, 1922. Milling-machines.-In feed-mechanism, more particularly for key-seating machines, the feedspindle is intermittently rotated by a pawl and ratchet actuated at each end of the tool traversemotion, and when the desired depth of feed has been attained the pawl is lifted clear of the ratchet by a cam .driven from the feed-spindle. The operative position of the cam is set by graduations which read in thousandths of an inch of feed. The pawl b, which operates a ratchetwheel B keyed to the feed spindle A, is connected to a plate M pivoted on the spindle and oscillated by a link m connected to a block N adjustable on a lever N<1> which is rocked about a pivot n, against the action of a spring plunger N<2> by means of a cam P. The cam is operated by a rack p reciprocated by a lever connected to a shaft which is rocked at each end of the cutterhead traverse. The pawl is lifted on completion of the feed by a cam G secured to a disc D carrying a train of wheels E<1> connecting a pinion C fast on the spindle to an annular wheel F, which is thus rotated in the same direction as the ratchet but at a lower speed, when the disc is held stationary by a brake S. To set the cam, the disc is set back, (i.e. in a direction opposite to that of rotation of the spindle) by means of graduations which are provided on the disc, to read in hundredths and thousandths of an inch. and on a scale K, Fig. 4, mounted on the wheel F to read in inches and tenths. The pawl b is raised out of gear with the ratchet and held by a spring plunger T and the tool is brought into contact with a step H on the disc D and the latter is rotated until the desired thousandth on its scale registers with the pawl. The scale K is then clamped by a thumb-screw k<2> to the wheel F, the internal gear is disengaged from the train E<1> by drawing it along the shaft and is turned until the desired tenth on the scale K registers with the stop H, after which the gears are reengaged. On commencing the cut, the wheel F is driven by the train E' until the stops k, H make contact, when the wheel rotates together with the disc D and the ratchet, carrying the cam G with it.
Patent GB-550507-A (GB)
Title: Improvements relating to the moulding of contoured rubber mats and like articles
IPC: B29C35/04
Filed: 1941-07-17
Abstract: 550,507. Moulding rubber articles. DUNLOP RUBBER CO., Ltd. July 17, 1941, No. 9017. Convention date, July 24, 1940. [Class 87 (ii)] A mould for making car mats &c. comprises a contoured central portion 15 surrounded by a continuous flange 22 opposed to a continuous flange 17 on a vulcanizing chamber 18, one of the said flanges having a continuous projection thereon adapted, on closing of the mould, to grip the margin of the rubber in the mould and prevent escape of vulcanizing fluid. The projection 21 may be on the flange 17, as shown, or on the flange 22, and may be in the form of a bead, a corrugated or flat springy strip, a hollow or solid rubber tube, rubberized packing or multi-ply fabric.
Patent GB-543569-A (GB)
Title: Improvements in or relating to cinematograph projectors
IPC: G03B21/40
Filed: 1940-05-22
Abstract: 543,569. Kinematograph projectors. PHILIPS LAMPS, Ltd. (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). May 22, 1940, No. 9075. [A Specification was laid open to inspection under Sect. 91 of the Acts, Nov. 26, 1940. ] [Class 97 (i)] In shutters for use in projectors provided with a light source which is deficient in particular colours, and having coloured translucent material in all the blades to improve the colour balance, that in the masking blade being less translucent than that in the flicker blades, the blades are formed so as each to intercept the same amount of light and minimize flicker. The blades may have equal cut-off periods, the effective area of the less translucent material being greater than that of the more translucent material. Alternatively, the effective areas of the translucent material may be equal in all the blades, and the cut-off periods of the blades may be unequal, or the blades may combine both these alternatives. As shown, the masking blade 50 has dark red glass inserts 42, 43, 44, for use with a H.P.M.V. lamp in a casing 29, and the flicker blade 51 has red glass inserts 45, 46, 47, which are more translucent. The angle of the blade 50 is less than the angle # of the blade 51. If the film is fed by a maltese cross mechanism the translucency of the insert 43 may be less than that of the inserts 42, 44. Specification 532,197 is referred to.
Patent GB-538541-A (GB)
Title: Piezo-electric elements
IPC: H03H9/09
Filed: 1940-05-24
Abstract: 538,541. Piezo-electric crystals. STANDARD TELEPHONES & CABLES, Ltd. May 24, 1940, No. 9183. Convention date, Aug. 2, 1939. [Class 40 (v)] A contact 2 with attached wire lead 5 is secured by means of a suitable adhesive 3 to the electrode face of a piezo-electric crystal 1. A metal coating 4 is applied by spraying or volatilization to connect the contact and lead to the electrode surface. The lead 5 is used for supporting the crystal. An embodiment is described (Fig. 2, not shown) in which a crystal having its electrode surfaces divided so as to vibrate in the fifth harmonic mode is supported by the five pairs of leads connected to the contacts. In a second embodiment, a pair of four electrode crystals are mounted by the leads in an evacuated glass bulb.
Patent GB-435483-A (GB)
Title: Improvements in or relating to apparatus for practising golf
IPC: A63B69/36
Filed: 1934-03-23
Abstract: 435,483. Golf-practising appliances. RADLEY, B. V., The Marina Hotel, Teignmouth, Devon. March 23, 1934, No. 9210. [Class 132 (ii)] Golf practising appliance comprises a base a with a triangular teeing hole b for the ball and having adjustably secured to it for movement in a horizontal plane, an arm m with a horizontal indicating segment n by means of which the player when looking at the ball from above is able to concentrate on the part x of the ball. The arm m is adjustably secured to the base a by the links d, e, screws f, f<1>, f<2>, nuts g, g', g<2>, bracket c and L-shaped arm j. The bracket c is provided with a stop p to facilitate placing the short arm of the L perpendicular to the base, and is provided with a member q for preliminary setting of the arm j. The arm m may be made adjustable and guides or a shoot may be provided adjacent the hole b to facilitate pushing the ball on to the tee with the club. According to the Provisional Specification the arm m may be adjustable to vary the perpendicular distance of the segment n from the base a and n is a sector.
Patent GB-587161-A (GB)
Title: Catalysts and the preparation thereof
IPC: B01J21/04
Filed: 1944-05-15
Abstract: A catalyst for hydrocarbon conversions consists of an alumina prepared by partial dehydration of aluminium hydroxide precipitated from an alkali aluminate solution, impregnated with boric oxide in proportions giving from 1.5x10-4 to 9.5x10-4 grams per square metre of available surface.  This amounts to about 7-14 per cent. of the total catalyst.  Suitable impregnating media are boric acid, ammonium borate, fluoroboric acid, and organic compounds of boron such as boric acid esters and alkyl boranes.  After impregnation the material is calcined above 300 DEG C. to form boric oxide.  Examples illustrate the use of the catalysts for such reactions as isomerisation of olefines, cracking, dehydrogenation of naphthenes, cyclisation of paraffins, dealkylation of alkyl aromatic hydrocarbons, and hydrogen transfer between an olefin and a cycloparaffin.
Patent GB-186363-A (GB)
Title: Improvements in metallized paper
IPC: D21H19/06
Filed: 1921-03-29
Abstract: 186,363. Hochstadter, M. March 29, 1921. Condensers.-Metallized paper, electrically conducting and at the same time porous, suitable for use in the construction of condensers, is produced by spraying molten metal, preferably spelter on to paper. The apparatus used, which deposits a predetermined quantity of metal on each square inch, is of well known type comprising nozzles 4 mounted on rotatable pins 22 on a table 6 and linked so that they oscillate together. The oscillatory movement is imparted by a sliding bar 19 operated by a wobble wheel 17 rotated by an electric motor 16 or by the motor which drives the paper 3. The metal wire to be sprayed is supplied from spools 13.
Patent GB-1132763-A (GB)
Title: Measuring moisture content and other properties of solids and liquids
Inventor: DALGARNO GORDON
IPC: G01N27/22
Filed: 1966-03-03
Abstract: 1,132,763. Measuring moisture electrically. ROWNTREE & CO. Ltd. March 3, 1967 [March 3, 1966], No.9425/66. Heading G1N. The moisture measuring system of Application 9426/66 is modified for use when there is more than one secondary variable, by the simultaneous application of at least two test frequencies. Output signals are derived from two sets of phase-sensitive detectors, (working at the two applied frequencies), and fed to a suitable "computing" network as before. Preferably the output of one of the detectors is fed to a servosystem to adjust the bridge network and "null-balance" the major phase component. The output to the subsequent computing system is then taken from the feedback potentiometer in the servosystem.
Patent GB-755269-A (GB)
Title: Improvements in fuel filtering systems in or for internal combustion engine installations
Inventor: JUBB ALBERT
IPC: B04B5/00
Filed: 1954-04-01
Abstract: 755,269. Centrifugal separators. ROLLS-ROYCE, Ltd. April 1, 1955 [April 1, 1954], No. 9650/54. Class 23. [Also in Group I] In a fuel system of an internal combustion engine, a centrifugal separator, having a stack of conical members, discharges impurities with a minor part of the fuel to a filter, the fuel separated in the filter being returned to the system. Fuel from a pipe 10 passes into the separating chamber through the inlet tube 15 and inlets 15c. The impurities with a minor part of the fuel are discharged from the chamber through outlets 30 into the part 31 of a stationary casing located between seals 32, 33. The impurities and fuel passes from the part 31 through a non-return valve 35 to a filter 36 comprising a casing 37 and a filter element 38. The impurities are deposited within the filter, and the fuel is returned to the pipe 10 after passing through a restrictor 40. Cleaned fuel from the separating chamber passes through perforations 24a in a tube 24 and an outlet 26 to the separator casing from whence it is discharged through an outlet 28. A wire mesh filter 41, within the tube 24 prevents ice particles being discharged with the fuel, and in a modification this filter is electrically heated. The separator is supported in bearings 14, 19 engaging the tube 15, and is driven by a hydraulic motor 16 supplied from a high pressure part of the system and exhausted into a low pressure part of the system.
Patent GB-1380242-A (GB)
Title: Benzazepine derivatives and processes for their preparation
IPC: C07C205/56
Filed: 1972-03-01
Abstract: 1380242 9,10-Dihydro-4H-thieno-[3,2-b][f] benzazepines ROUSSEL UCLAF 1 March 1972 [1 March 1971] 9653/72 Heading C2C  Novel 9,10 - dihydro - 4H- - thieno - [3,2-b] [f]benzazepines of the general formula wherein each of A and A<SP>1</SP> is an alkoxy or alkylthio group or A and A<SP>1</SP> together form a straight- or branched-chain alkylenedioxy, alkylenedithio or alkylene-thiooxy group, R (at the 2- or 3-position) is a hydrogen atom or alkyl group and each of R<SP>1</SP> and R<SP>2</SP> (at the 5-, 6-, 7- or 8-position) is a hydrogen or halogen atom or an alkyl, trifluoromethyl, optionally substituted alkoxy, alkylthio, optionally substituted sulphamoyl dialkylamino or acylamino group, are prepared by heating a 3-bromo-2-[#-(2<SP>1</SP>aminophenyl)-ethyl]-thiophene of the general formula in the presence of a copper salt. 3 - Bromo - 2 - [# - (2<SP>1</SP>- aminophenyl) - ethyl]- thiophenes of the second general formula above wherein A and A<SP>1</SP> together form an ethylenedioxy group, are prepared by reaction of an o-nitrophenylacetic acid of the general formula with thionyl chloride, reaction of the resulting acid chloride with a 3-bromothiophene of the general formula in the presence of an acid, reaction of the resulting 3 - bromo - 2 - (2<SP>1</SP>- nitrophenylacetyl) thiophene of the general formula with ethylene glycol and reduction of the resulting ethylene ketal with zinc and acetic acid.
Patent GB-909794-A (GB)
Title: A television-channel switch
IPC: H03J5/24
Filed: 1959-03-20
Abstract: 909,794. Radio receiving circuits. NURNBERGER SCHWACHSTROM - BAUCLEMENTE FABRIK G.m.b.H. March 20, 1959 [Aug. 18, 1958], No. 9692/59. Addition to 909,125. Class 40 (5). In a television tuner in which, as in the parent Specification, the same valves are used for V.H.F. and U.H.F. reception, switching is by pushbuttons, the U.H.F. range being continuously tuned by variation of capacity and the V.H.F. by incremental switching of inductances for individual channels. As shown, slide switch T 0  is depressed for U.H.F. reception and the circuit is as described in the parent Specification. Depression of any of the slide switches T 1 -T 11  releases any other depressed switch and brings into circuit V.H.F. inductances connected in series: e.g. if slide switch T 10  is depressed inductances L<SP>10</SP> 2 , L<SP>11</SP> 2  ; L<SP>10</SP> 3 , L<SP>11</SP> 3  ; L<SP>10</SP> 4 , L<SP>11</SP> 4 , L<SP>10</SP> 5 , L<SP>11</SP> 5  are brought respectively into the input, the two band-pass filter, and the oscillator circuits. The circuit differs from the parent insofar as the bandpass filter is coupled by condenser C20, A D.C. path being provided by choke D<SP>1</SP>r 4 .
Patent GB-1115883-A (GB)
Title: A temperature gauge using reverse biased semiconductor junction diodes
IPC: G01K7/01
Filed: 1966-03-05
Abstract: 1, 115, 883. Measuring temperature electrically. J. B. LEIGH. March 1,1967 [March 5, 1966], No. 9724/66. Heading G1N. A temperature measuring bridge comprises a reversely-biased semi-conductor diode 1, the voltage drop across which increases with temperature and a reference semi-conductor diode 2, the voltage across which is substantially independent of ambient temperature. A micro-ammeter 8, calibrated in terms of temperature is connected across the measuring diagonal of the bridge.
Patent GB-680036-A (GB)
Title: Blading for rotary compressors, turbines and the like
IPC: F01D5/14
Filed: 1950-04-20
Abstract: 680,036. Axial-flow compressors and turbines. KEAST, F. H. April 20, 1950 [April 26, 1949], No. 9725/50. Classes 110 (i) and 110 (iii) In a rotor or stator blade for a compressor or turbine, the leading edge of each successive crosssection is displaced relatively to that of the preceding cross-section, the displacement relative to the local fluid flow being negative from the blade root outward to a selected point and positive outward from the selected point, the angle of sweep of the leading edge at any section being not substantially less than the minimum required to maintain subsonic flow. A compressor rotor blade 10, Fig. 9, is of twisted form in accordance with " free vortex principles, but has its leading edge 11 swept forward from the root 13 to a point 15 and then swept backward to the tip 16. The chord length of the blade cross-section may vary so as to permit the shape of the trailing edge 12 to differ from that of the leading edge. Fig. 11 shows a modified form in which, for the purpose of minimizing the bending moments due to forces acting on the offset blade sections, the blade is given a progressive displacement from root to tip by imposing additional displacements upon successive cross-sections in a direction substantially perpendicular to their chord lines, so that the centroids of the cross-sections be close to, or on, a radial plane containing the principal axis of bending of the root section. The Specification describes graphical methods of constructing the blade form.
Patent GB-671765-A (GB)
Title: Signboard, particularly for advertising purposes
IPC: G09F7/22
Filed: 1950-04-20
Abstract: 671,765. Notice boards. LARGELIUS, L. G. V. April 20, 1950 [April 20, 1949], No. 9738/50, Class 3(ii) A notice board comprises two frames 1, 2 having glass plates 16 and hinged together, each frame having on one of its free edges a swingably mounted notice holder 4 which may be selectively swung inwardly to rest against its respective frame or swung outwardly to provide, with the frames, four display panels. The holders 4 have channelled top and bottom edges for supporting notices and are pivoted on pins having an eye which is screwed to lugs 8 at the corners of the frames 1, 2. The lugs 8 which do not support pivot pins carry wire members 21 by which the holders 4 are locked to the frames 1, 2. The holders may be pivotably mounted on any of the free edges of the frames. Screwed to the free edges of the frames 1, 2 are eyes 26, to which spring lugs 29, 31 of one or more sign carriers 43 may be clipped. The lugs of the sign carrier are pivotably mounted so that the carriers may be arranged as required. The sign carriers may be double sided. The signboard may also be pivotably mounted by means of brackets 46 which co-operate with the eyes 26. When the holders 4 are locked to the frames 1, 2, the outer edges of the frames may be swung together and locked by means of a threaded sleeve and pin which engage holes 14 in the frame edges.
Patent GB-660920-A (GB)
Title: Improvements in plate heat exchangers
IPC: F28F27/00
Filed: 1949-04-11
Abstract: 660,920. Plate-heat exchangers. AKTIEBOLAGET SEPARATOR. April 11, 1949 [April 14, 1948], No. 9764/49. Class 64(iii) In a plate heat-exchanger in which the juxtaposed plates 1-6 have openings forming a channel 8 containing a thermometer 10, the opening in a throttling plate 4 beyond the thermometer in the direction of liquid flow is small and is located in the upper part of the channel, so that liquid flowing through the channel must rise to a level at which the thermometer is covered. The opening in the plate 4 may be circular or elongated horizontally.
Patent GB-1412032-A (GB)
Title: Junction boxes for conduits
IPC: F16L41/02
Filed: 1973-02-28
Abstract: 1412032 Pipe fittings SOCIETE SUPERFLEXIT 28 Feb 1973 [1 March 1972] 9810/73 Heading F2G  In a moulded junction piece for interconnecting fluid-carrying on electrical conduits of different diameter, different sized connecting arms 2a, 2b, 2c and 2d have apertures at their conjoint ends all of the same diameter. The junction piece is moulded using a lost wax process, in which a wax pattern for the central body part has wax patterns for the different arms selectively secured to it.
Patent GB-218032-A (GB)
Title: Improvements appertaining to gramophones
IPC: G10K13/00
Filed: 1923-04-11
Abstract: 218,032. Shackleton, S. April 11, 1923. Tone-arms; tone-arm joints; cases with internal horns.-In a gramophone or the like, the tone-arm 6, made of wood or like fibrous material, is pivoted at 6<a> to a vertical pillar 2 made of a similar substance, the pillar being mounted so that it can rotate about a vertical axis. The walls of the tone-arm and pillar are comparatively thick. The pillar is supported by a flange 2<a> on the motorboard 3, a fibre &c. washer being interposed, and its lower end passes into a recess in a platform 4 which supports the neck 7 of the horn. The horn is rectangular in cross-section. The tonearm 6, shown in plan in Fig. 4, has at the free end a part 6d, the faces 6<c> of which converge towards the axis of rotation of the pillar, and the sound-box (not shown) is fitted into the part 6<a> so as to abut against one of the inclined faces. At the other end of the tone-arm is a projection 6<b>, which enters the pillar 2. A fine metal gauze 16 is preferably mounted upon the part 6b, across the sound-passage. Reflecting surfaces 6<c>, 5, and 13 are arranged in the sound-conduit as shown. In the upper chamber of the instrument, a lining 14 of ply wood, felt, &c. is provided. A non-metallic damper (not shown) is arranged to slide beneath the platform 4 and below the end of the pillar 2, to vary the size of the sound-passage.
Patent GB-1033811-A (GB)
Title: Position detecting and length measuring apparatus
Inventor: BRIGGS PETER RICHARD ASHWORTH
IPC: G01B11/02
Filed: 1963-03-13
Abstract: 1,033,811. Electric selective signalling. DAVY & UNITED INSTRUMENTS Ltd. March 10, 1964 [March 13, 1963], No. 9868/63. Heading G4H. In a position detecting device comprising a series of elongate radiation-transmitting elements, each adapted to transmit radiation along its length by multiple internal reflections, the receiving ends of the elements are each of elongate cross-section and are arranged in an array with their long sides parallel to and closely adjacent one another, and the other ends of the elements feed respective radiation detectors. Each radiation-transmitting element may consist of a large number of individual glass-fibre filaments spread out-into a line at the receiving end and bunched together at the other end. The device may be used for detecting the position of a hot object from a rolling mill, the outputs of the radiation detectors (photo-cells) being fed to AND-gates to render conducting a single one of a plurality of transistors controlling weighted resistors, thus producing a voltage which is measured by a meter. Two of the position detecting devices so far described may be used to measure a linear dimension of a body, by associating each device with one edge, the voltages being fed to a common meter to give a difference indication. Use of a decoder or analogue-digital converter to give a digital output is mentioned.
Patent GB-347843-A (GB)
Title: Improvements in adjustable display stands
IPC: A47F5/06
Filed: 1930-03-28
Abstract: 347,843. Stands. JAMES, Ltd., W. & H. H. and JAMES, W., Walsall Road, Willenhall, Staffordshire. March 28, 1930, No. 9894. [Class 52 (v).] A display stand consists of a fixed standard a and one or more substantially rectangular frames b, each carrying removable or fixed cross-bars d and supported by upper and lower radial arms g, h each having a ball - bearing mounting upon the standard. Each frame is looked in adjusted position by a pin m carried by a bracket on the lower arm hand selectively engaged with holes in a fixed collar j on the standard. As shown, the frame sides are of stepped formation and carry a shelf l. Each frame may be enclosed in a glass or other casing, and the bars d may be fitted with glass &c. shelves.