baber/WOPTO huggingface dataset:
Patent GB-1174291-A (GB)
Title: Information retrieval from Symbols containing Photoluminescent Materials
Inventor: HALVERSON FREDERICK
IPC: C09D5/22
Filed: 1967-01-19
Abstract: 1,174,291. Detecting fluorescence photoelectrically. AMERICAN CYANAMID CO. Jan.19, 1967 [Feb.9, 1966 (2)], No.2972/67. Heading G1A. [Also in Divisions C4 and G4] Symbols coded by the presence or absence of photo-luminescent materials are sensed by using an exciting source of periodically varying intensity and detecting the presence or absence of the different materials by examining the output of a luminescence detector for the presence or absence of frequency components characteristic of the materials owing to their different luminescence lifetimes. The presence or absence of materials having short e.g. 10<SP>-8</SP> sec. and long, e.g. 10<SP>-3</SP> sec. decay times may be detected by energizing the exciting source, e.g. a mercury vapour or xenon lamp, with A.C. of a frequency such that the luminescence from the material with the long time constant is unable to follow the variations in excitation intensity. A single detector for the luminescence has its output connected to two terminals through respective high- and low-pass filters, Fig. 1 (not shown), the ratio of the signals appearing at these terminals indicating the presence or absence of the two components. Where more than two components may be present, detection may be achieved by energizing the exciting source with A.C. of different frequencies in sequence, the frequencies being chosen in relation to the decay times of the various components. In the embodiment shown in Fig. 2, a xenon flash tube 7 is triggered by photo-cell 14 and a bi-stable circuit (not shown) as every other slit 11 in rotating disc 10 passes lamp 13. The spacing of the slits and the speed of disc 10 are chosen such that while tube 7 is firing as a result of a slit 11 passing lamp 13, an adjacent slit 11 scans the spectral components of the fluorescence as separated by a prism 9. If, for example, a component which fluoresces blue and green and has a short decay time, is present together with a component which fluoresces green and has a long decay time, the photo-cell 12 will be illuminated at times corresponding to blue and green during the excitation by lamps 7. A subsequent scan by the next slit 11 (when lamp 7 is not triggered) will result in photo-cell 12 being illuminated by the green fluorescence of the second component only, since the first component will no longer be emitting. Instead of disc 10 and slits 11, an oscillating or rotating mirror may be used to scan the spectral components. Alternatively, a set of spaced, stationary slits may be used, corresponding to the spectral components and being associated with individual detectors, the outputs of the detectors being scanned in sequence. Instead of using dispersion, such as by prism 9, each slit 11 in rotating disc 10 may be replaced by a set of filters illuminating photo-cell 12 in turn through a stationary slit. Alternatively, slits 11 may illuminate a set of detectors provided with individual filters.
Patent GB-750374-A (GB)
Title: A plate-type protective device for flame-proof casings of electrical apparatus
IPC: H01H9/04
Filed: 1954-02-01
Abstract: 750,374. Switch cases. LICENTIA PATENT-VERWALTUNGS-GES. Feb. 1, 1954 [Feb. 6, 1953], No. 2977/54. Drawings to Specification. Class 38(5) [Also in Group XXI] A flame-proof casing for switch gear and other electric apparatus has a pressure-relieving device comprising spaced parallel plates between which flow gases produced in the casing, each plate having a number of short overlapping corrugations arranged so as to provide a sinuous path for the gases. The corrugations are formed by alternate upwardly and downwardly directed depressions arranged transversely to, or at an angle to, the direction of gas flow.
Patent GB-1374524-A (GB)
Title: Piston pumps
IPC: F04B1/04
Filed: 1972-01-21
Abstract: 1374524 Reciprocating pumps ROBERT BOSCH GmbH 21 Jan 1972 [27 Jan 1971] 2994/72 Heading F1A A reciprocating pump, e.g. a radial piston pump, in which fluid from duct 23 is drawn, via a recess 15 and orifices 17-17"' in a stationary flow control member 12 into the bores 5 of a rotating cylinder block 6 to be discharged via orfices 18-18''' past non-return ball valves 20-20''' and a recess 16 also all in member 12, to a discharge duct 26 as the spring-loaded pistons 7 which contact a ball race 4 reciprocate on rotation of the block 6, is provided in the supply duct 23 with a spring-loaded slide valve 24 responsive to the pump delivery pressure. When the pressure in duct 26 becomes too great, valve 29 opens to admit fluid from duct 26 via duct 28 to chamber 25" to move valve 24 to the right against spring 30 to throttle the flow through duct 23. After the consequent fall in pressure in duct 26 valve 29 closes, and spring 30 restores valve 24 to its original position, the fluid displaced from chamber 25" passing through bore 33, chamber 25' and duct 23' to the supply duct. If the pressure in duct 26 and so chamber 25" is very large valve 24 moves so far to the right that chamber 25" directly communicates with supply duct 23 through groove 32 to act as a relief valve. In modifications (not shown) the pump may comprise an axial or a radial piston pump in which the flow control member comprises a planar or part-spherical valve plate provided on its outlet side with a plurality of orifices each containing a non-return valve and leading to a common recess and discharge duct.
Patent GB-400046-A (GB)
Title: Improvements in electric headlights for motor vehicles
IPC: H01K9/00
Filed: 1933-01-31
Abstract: 400,046. Electric-lamp bulbs with internal screens. RICHTER, H. T., 47, Ohnsorgstrasse, Aussig-on-Elbe, Czecho- Slovakia. Jan. 31, 1933, No. 3013. Convention date, March 8, 1932. [Class 39 (ii).] In an electric incandescent headlamp for motor vehicles, with a main filament H in the focus of a reflector, an auxiliary filament N is surrounded wholly by a grid or cage a so that the rays emitted by it are broken up into a series of separate pencils. As shown in Fig. 4 the apertures in the grid are of different sizes so that ray pencils of different sizes are emitted therefrom. The portion b of the bulb adjacent to the main filament is provided with a constriction at approximately the level of the top of the filament H, and the portion G below the constriction may be made of coloured glass or provided with a translucent coloured coating or cover. Alternatively this part of the bulb may be made of ground or ribbed glass.
Patent GB-1461304-A (GB)
Title: Hot dip metal coated tubes
IPC: C23C2/02
Filed: 1974-01-22
Abstract: 1461304 Making tubes DAIWA STEEL TUBE INDUSTRIES CO Ltd and WESTERN TUBE & CONDUIT CORP 22 Jan 1974 03019/74 Heading B3A [Also in Division C7] In a continuous process for hot dipping metal tubes, the thickness of the coating and its bonding quality can be measured by uniformly abrading the tube surface prior to dipping. Steel strip from an uncoiler 1 is cleaned 7 and fed in guides 11a, 11b, 11c and 11d through a centrifugal shot blasting machine 9, where it is uniformly abraded on both sides. Surface debris is blown off 21 and the strip is rollformed 23 and seam welded 25 into a tube. After water cooling, the tube is fed into a temperature controlling device 27, air blown 29 to remove water, and fed into a pickle 31 to remove oxide. After rinsing 33 it is prefluxed 35 and hot dipped 39 after preheating 37. Excess metal is blown off 41, and the coated tube is quenched 43, roll sized 45, straightened 47 and surface heated 49 prior to cutting to length. Alternatively, the tube may be sized 45 before prefluxing 35, the resulting roughened surface being suitable for painting or coating with plastics film after straightening. A further embodiment forms the tube from the strip material prior to shot blasting and dipping, and a further embodiment coats the roughened strip prior to forming mild tube. The coating thickness in all embodiments is 3 up to 100 microns.
Patent GB-341288-A (GB)
Title: Improvements in or relating to holding devices for the work on filing, sawing or like machines
IPC: B23Q3/10
Filed: 1930-01-29
Abstract: 341,288. Sawing &c. machines. THIEL, H. and THIEL GES. GEB., Ruhla, Thuringia, Germany. Jan. 29, 1930, No. 3112. Convention date, June 14, 1929. Addition to 296,949, [Class 145 (ii), Wood, Working]. [Class 145 (ii).] In a work-holding device for sawing or like machines as described in the parent Specification, the branches 2, 4, 5 of the work-holding frame, or at least the lateral branches 4, 5, are of stepped formation, Fig. 3, so that a work-piece may be inserted at different levels. By this means the upper surface of work-pieces 1 of different thickness may be arranged above the level of the top of the frame so that holding devices engaging the upper surface of the work may be moved aside without interference from the frame. In a modification, Fig. 4, the steps may be formed of interchangeable members 19 of different thicknesses which are slidable into grooves in the frame parts 4, 5 and may be locked therein by screws 20.
Patent GB-607380-A (GB)
Title: Chamfering machine
IPC: B27D1/10
Filed: 1946-02-01
Abstract: 607,380. Bevelling by grinding. LYON, M. J., AGET, E., LOUCHARD, M., and GUILLOTEL, G. Feb. 1, 1946, No. 3218. [Class 60] In a machine for bevelling or chamfering sheets or panels of wood or like material, particularly for producing comparatively broad bevels having a slope of low value, e.g. 1 to 2 degrees, the sheet wood or like comparatively thin material, e.g. veneer, plywood or similar thin panel a is supported on a platform 7 hinged at 8 to the table 6, the inclination of the platform being adjustable by bolts 11 and slots 12. The platform is apertured for the grinding wheel 5 mounted in the machine frame, the table 6 also being apertured. The work is held down by an adjustable rest 13, e.g. slidably mounted in a guide 14 secured on the platform 7 and locked at the desired height by bolt 15 projecting through a slot 16. The sheet is moved longitudinally on the platform; guiding members for the edge of the sheet can be provided either on the platform or at the rear of rest 13. The grinding wheel can consist of a drum made of a more or less elastic material about which is secured an abrasive material in the form of glass-paper, carborundum cloth, &c. The drum has a profile corresponding to the outline of the bevel to be produced; it may be frustro-conical or curved. Instead of a wheel, an endless abrasive band may be used, running over a drum or a sole plate where it contacts the work. The member 13 may be replaced by one or more rolls which may be idle or be driven to traverse the work along the platform; a series of shoes may be employed providing an endless chain sliding along an adjustable guiding track. A suction hood may be provided for dealing with the dust generated.
Patent GB-1010038-A (GB)
Title: Surface-coated optical elements
IPC: C03C17/22
Filed: 1964-01-24
Abstract: A film is formed on an optical element by e.g. vapour deposition of a fluoride of a rare earth element e.g. CeF3, LaF3 or NdF3 and either zinc sulphide and/or an oxide of a rare earth element, e.g. CeO2, La2O3 or Nd2O3. Several layers may be deposited.
Patent GB-1036514-A (GB)
Title: Improvements in and relating to waxes
Inventor: DUCK EDWARD WILLIAM
IPC: C08L91/08
Filed: 1964-01-24
Abstract: A method of modifying a wax comprises incorporating into the wax a homo- or copolymer of butadiene and hydrogenating the polymer in the presence of the wax.  The polymer which is present in an amount of from 1 to 20% by weight of the wax, is dissolved in the wax by stirring the polymer in particulate or shredded form into molten wax. Examples of suitable waxes are petroleum waxes, e.g. paraffin wax, microcrystalline wax, natural waxes, e.g. beeswax and carnauba wax, synthetic waxes, e.g. polyethylene wax, ethylene copolymer waxes and chlorinated paraffin waxes.ALSO:A method of modifying a wax comprises incorporating into the wax a homo- or copolymer of butadiene and hydrogenating the polymer in the presence of the wax.  The polymer, which is present in an amount of from 1 to 20% by weight of the wax, is dissolved in the wax by stirring the polymer in particulate or shredded form into molten wax.  The usual hydrogenation catalysts are used.  The examples relate to homo-polymers of butadiene and copolymers with styrene and divinyl benzene.
Patent GB-955192-A (GB)
Title: Improvements in or relating to syringe action dispensing devices
IPC: B65D83/00
Filed: 1962-01-29
Abstract: 955,192. Syringes. K. ABILDGAARD, [trading as LOVENS KEMISKE FABRIK VED A. KONGSTED]. Jan. 29,1962 [April 27, 1961], No. 3317/62. Heading F1R. A multiple syringe comprises a tube body 1 having two or more cylindrical compartments 3, 4, the interior of which communicate with separate outlets 11 in a nozzle 9. The recesses formed at the junction of the compartments 3, 4 are bridged by projections 14 at the lower end and are continued into the nozzle 9. The tube body 1 is slidable in a tube case 2 comprising semi-cylindrical portions 12, 13 connected by plane portions 15 spaced to allow free movement of the projections 14 between them; at the top end of the tube case the portions 15 have internal projections 17 which are engageable with the projections 14 whereby to prevent withdrawal of the tube body 1. The bottom of the tube case 2 is closed by a plate 19 having attached pistons 21 which enter the compartments 3, 4.
Patent GB-1208992-A (GB)
Title: Knitting machine apparatus for producing tubular fabric without a helical bias
IPC: D04B35/34
Filed: 1969-01-21
Abstract: 1,208,992. Cutting webs. SINGER CO. 21 Jan., 1969 [26 Jan., 1968], No. 3434/69. Heading B4B. [Also in Divisions D1-D2] A device for cutting tubular fabric produced on a circular knitting machine (see also Divisions D1-D2) comprises a fixed blade 52 which also guides the fabric and a co-operating truncated movable blade 56. Blade 56 is coupled to an arm 58 pivoted at 60 and rocked by an eccentric 70.
Patent GB-1414947-A (GB)
Title: Production of microscopically small metal or metal alloy circuit structures
IPC: C23C14/04
Filed: 1974-01-25
Abstract: 1414947 Printed circuits SIEMENS AG 25 Jan 1974 [31 Jan 1973] 03453/74 Heading H1R A thin film metal or alloy circuit structure is provided by vapour depositing a thin continuous layer of metal or alloy on a carrier; applying, exposing, and developing a photoresist lacquer to define the required circuit by exposure of the underlying layer; electrodepositing a thin gold layer thereon; electrodepositing a thicker layer of metal or alloy thereon, removing the photoresist, and removing the exposed parts of the thin metal or alloy layer. A glass or ceramic carrier 1 (Fig. 1) is vapour deposited with a Ni-Fe layer 2 and thereon a photoresist layer 3, in which channels 7 are photographically formed to expose the metal layer. An Au layer 4 (Fig. 2) is electrodeposited on the exposed parts and reinforced by a further Ni-Fe layer 5 overlain by an electrodeposited Au layer 6 as protection. The photoresist is removed, (Fig. 3, not shown), and the carrier is exchange etched in a weakly acidic Au bath to remove the exposed Ni-Fe layer 2 and replace it with Au, which is subsequently etched off in dilute KCN. The process is applicable to production of a magnetostriction free Ni-Fe control circuit for a cylinder domain store, or to microcircuit wiring for integrated circuitry.
Patent GB-687989-A (GB)
Title: Improvements in or relating to gas filters
IPC: B01D46/04
Filed: 1951-02-13
Abstract: 687,989. Gas filters. HERSEY, H. J. Feb. 13, 1951. No. 3468/51. Class 8 (ii). A reverse jet cleaning device encircling a vertical flexible gas filter sleeve 10 Fig. 2 collecting dust on its inner surface, and movable along its length, comprises a plurality of separate hollow curved sections 44, 46 each having an orifice or slot 100 Fig. 3 (not shown) from which issues cleaning air, and each being independently urged into yielding engagement with the outer surface of the sleeve 10. Each jet section 44, 46 is floatingly supported at three points from a frame 22 by rubber rods 64 extending between upper and lower flange plates of the frame, and each section is pulled against the sleeve exterior by weights W at the end of cables 86, 92 passing over pulleys 88, 94. The frame 22 is reciprocated up and down the sleeve 10 either continuously or intermittently by an arm 20 linked by a chain 18 Fig. 1 and an arm 16 to a motor driven chain sprocket 14. T-sections 32, 34 guide the frame 22 which may be extended to accommodate a plurality of filter sleeves in parallel, and cleaning air is supplied to the sections 44, 46 through flexible ducts 102.
Patent GB-433426-A (GB)
Title: Improvements in and relating to autographic registers
IPC: B41L5/06
Filed: 1935-02-02
Abstract: 433,426. Feeding and registering webs. ANGLO NUMBERING MACHINES, Ltd., 28, Kingsway, and HUDSON, G. R., 77, Warwick Square, Belgrave Road, both in London. Feb. 2, 1935, No. 3479. [Class 100 (i)] [See also Group XIX] In an autographic recorder of the kind in which the strips are drawn over the writing plate by friction discs 1 co-operating with a pressure roller 4, the discs being gapped so as to feed the strips during a part only of each revolution, spring - controlled lugs 8 are pivotally mounted on the discs and projected by cams 11 into holes in the strips to restart the feeding operation. The lugs 8 are normally held retracted by a spring 9 but, towards the end of an operation, are rocked outwardly about their pivots 7 to engage the strips and simultaneously raise the pressure roller 4 to the ineffective position shown. Instead of being raised by the lugs 8, the roller may be raised by cam discs situated at the ends of the drive shafts 2, these discs co-operating with reduced end portions of the roller and being slightly larger than the friction discs 1 so as to act as lateral guides for the strips. The pressure roller is mounted in a housing 13 rockable against the action of a spring 16 about a pivot 14 and provided with a severing bar 19 for the voucher strip. The drive shaft 2 is rotated by a crank handle 5 to which it is connected by lugs 23, 24, Fig. 4, on the handle and a stop 25 on the shaft. The means for limiting the rotation of the shaft to one revolution at each operation comprise a forked lever 27 frictionally pivoted to the casing. As the shaft rotates clockwise from the position shown in Fig. 4, the lever is rocked to the left by the stop 25 to interpose a shoulder 34 on the lever in the path of the stop and thus arrest the shaft. The shaft is released, prior to a further rotation, by a backward rocking of the handle which, by abutment of the lug 24 with a pawl 30 on the lever, restores the latter to releasing position.
Patent GB-768122-A (GB)
Title: Process for the production of polymers
Inventor: ROPER ALEC NORMAN
IPC: C08G61/02
Filed: 1953-02-06
Abstract: Polymers are produced by pyrolysing the vapour of p-xylene, 1,4-dimethyl naphthalene or a derivative thereof nuclearly substituted by at least one methyl group and/or an atom of a normally gaseous halogen, at sub-atmospheric pressure and a temperature between 1000 DEG  and 1300 DEG  C. for not more than 0.1 second and cooling the vapour to deposit a solid polymer. Specified compounds are pseudocumene, durene, isodurene, 2-fluoro-p-xylene, 2-chloro-p-xylene, 2,5-dichloro-p-xylene and 2,5-difluoro-p-xylene. The pressure should preferably not exceed 400 mm. Hg. absolute and inert gases such as carbon dioxide, nitrogen and steam may be present.  The product may be recovered as a film on a cold surface and washed with benzene or ether, as flakes, or as a powder by chilling with a spray of non-solvent, e.g. ethylene glycol.  The products have high thermal stabilities, are resistant to solvents and concentrated mineral acids at normal temperatures and have good electrical insulating properties. They are soluble at elevated temperatures in high boiling aromatic solvents, e.g. diphenyl, benzyl benzoate, phenanthrene and polycyclic aromatic fractions from coal tar distillation and petroleum cracking.  Polymers from isodurene, pseudocumene and mixtures with p-xylene may be moulded.  The p-xylene polymer in communuted form may be used as a filler.  Specifications 650,947, 673,651, 718,106 and 740,886 are referred to.
Patent GB-588355-A (GB)
Title: Improvements in and relating to public address and like systems
IPC: H04M9/08
Filed: 1945-02-13
Abstract: 588,355. Public address systems. BRITISH BROADCASTING CORPORATION, and KIRKE, H. L. Feb. 13, 1945, No. 3620. [Class 40 (iv)] In order to prevent acoustic reaction in a public address system incorporating a plurality of microphones and loud-speakers, circuit arrangements are such that each microphone produces a relatively small response in the loudspeaker from which sound pick-up by the said microphone is largest. In the Figure, microphones 38 ... 41 are connected by hybrid coils 1 ... 4 to loud-speakers 42 ... 45. Currents from microphone 38, split in hybrid 1, so as to have no effect on loud-speaker 42, whereas currents from this microphone produce additive effects in the other hybrids to energize the loudspeakers 43, 44 and 45.
Patent GB-162805-A (GB)
Title: Improvements in or connected with self propelled and like vehicles wheels
IPC: B60B3/08
Filed: 1920-02-06
Abstract: 162,805. Pickering, J. T. Feb. 6, 1920. Tyre attachments to rims.-A wooden felloe 2 secured to discs 3 is grooved to receive a V- shaped ring 10 having an outwardly projecting rib 11 extending beyond the beads 7 of the discs. The ring 10 may be made of canvas and rubber either in lamniµ or disintegrated form. Fig. 3 shows the arrangement of the inflation valve tube 15. The felloe may be in halves each connected to a disc and held together by bolts 5.
Patent GB-1524275-A (GB)
Title: Polymerization process for polyamides with processability at temperatures lower than their conventional melting and decomposition temparature
IPC: C08G69/00
Filed: 1976-01-30
Abstract: 1524275 Anionic polymerization of lactam CONSIGLIO NAZIONALE DELLE RICERCHE 30 Jan 1976 [13 Feb 1975] 3664/76 Heading C3R The anionic polymerization of dry lactams having 4 to 12 C atoms in the ring is effected in bulk in the absence of a solvent for the monomer or polymer and in the presence of 1 to 10 wt. per cent of a lithium halide. The presence of the lithium halide lowers the melting point of the polymer (e.g. for 0, 1, 2, 3 and 4 wt. per cent LiCl in nylon 6 the respective melting points are 240, 230, 220, 204 and 192 C.) permitting lower processing temperatures and resulting in better adhesion to fillers such as glass beads or fibres. The decrease is not permanent and the original melting point can be restored by hot water washing. Reference is made to Specification 1,342,603.
Patent GB-175887-A (GB)
Title: New or improved means or apparatus for coupling electric cables and the like
IPC: H02G15/00
Filed: 1921-02-01
Abstract: 175,887. Andrew, G., and Wilkinson, F. H. Feb. 1, 1921. Coupling.-Means for coupling electric cables comprise members A, B having respectively a correspondingly tapered socket and plug, one member having a groove or slot with a longitudinal part g and an inclined lateral part h with which a spear c on the other member engages, the members being wedged together upon relative rotation. The members A, B are each provided with a recess to receive the strands of an electric cable.