baber/WOPTO huggingface dataset:
Patent GB-960370-A (GB)
Title: Improvements in apparatus for the non-destructive testing of electrical insulation
IPC: G01R31/12
Filed: 1960-09-02
Abstract: 960,370. Testing insulation. GENERAL ELECTRIC CO. Sept. 2,1960 [Sept. 8,1959], No. 30327/60. Heading G1U. In an insulation testing apparatus, in which an increasing uni-directional voltage is applied across a pair of terminals for connecting the insulation under test to the apparatus, the discharges which occur in the insulation are detected on an oscilloscope connected by a filter, having a low frequency cut off of the order of 1000 cycles, to a voltage pick-off between one of the terminals and the source of unidirectional voltage. A D.C. voltage obtained from autotransformer 1, transformer 2 and rectifier 3 is applied to an insulation system 8, such as the insulation of an electric machine, across terminals 4, 5 and a voltage proportional to the current in the test circuit is picked off either through transformer 11 or across resistor 12 and applied through filter 14 to oscilloscope 15. By adjusting the autotransformer 1 the voltage across the insulation is increased and discharges or current fluctuations due to charge shifts occurring in the insulation are observed on the oscilloscope. Continuous and intense discharges indicate that the breakdown voltage is being approached and also the noise pattern of the discharges indicates the dielectric condition and/or degree of contamination of the insulation. Fig. 2 (not shown) shows the leakage current characteristics for various conditions of insulation together with oscilloscope discharge patterns corresponding to the various conditions of insulation.
Patent GB-1442639-A (GB)
Title: Travelling wave tubbes
IPC: H01J23/30
Filed: 1973-06-26
Abstract: 1442639 Travelling-wave tubes SIEMENS AG 26 June 1973 [28 June 1972] 30343/73 Addition to 1422706 Heading H1D The arrangement disclosed in the parent Specification 1,422,706 for attenuating parasitic modes is applied to a coupled-cavity slowwave structure having coupling apertures 5 disposed successively on alternate sides of the axis, the dielectric rod 9, bearing a conventional graphite attenuating layer 13 and resonant attenuated metallized structures 15, passing in contact-free manner through one set of coupling apertures and through additional interposed apertures 6 provided for the purpose. The metallized areas are as shown at 16, Fig. 2, the ends of the comb teeth entering the strips 19 of attenuating material, and are preferably disposed such that the E field of the operating mode is perpendicular to the surface of the areas. The rod 9 is spring-mounted at end 12 to permit thermal expansion, and may be soldered to its support at the other end to form a heat sink; heat flow may be further improved by soldering the rod to the slow-wave structure at some of the apertures 6 (Fig. 4, not shown). In a modified arrangement (Figs. 3 and 4, not shown), two rods 9, oppositely disposed with respect to the tube axis, and of different lengths, are employed. The metallized areas 16 may alternatively be of meander or interdigitated form, and the beam passage apertures 4 may be lined with rhodium to reduce vaporization of metal by the electron beam and subsequent deposition of that metal on the rod 9.
Patent GB-396252-A (GB)
Title: Improved means for holding brake magnets
IPC: G01R11/10
Filed: 1932-10-29
Abstract: 396,252. Magnets. LANDIS & GYR AKT.-GES., 1, Hofstrasse, Zug, Switzerland. Oct. 29, 1932, No. 30413. Convention date, Nov. 16, 1931. [Class 35.] Brake magnets are held by embedding in non-metallic insulating material containing a metal reinforcement having seating surfaces against which the magnets bear. The brake magnet consists of two semicircular parts 1 between which is mounted the driving disc 2 of an electricity meter. A pair of metal plates 3, 4, for example of iron, are connected together, for example by welding, lying one against the other. Lugs 5 on the two plates are bent in opposite directions at right-angles to the plane of the plates and form abutments for the magnets 1. A disc 7 provided with a screwthreaded socket 6 is welded or otherwise fixed to the plates 3, 4 to serve for mounting the brake-magnet system in the meter. The magnets 1, plates 3, 4 and abutments 5 are surrounded by non-metallic material 8, preferably artificial resin such as that known under the registered Trade Mark "Bakelite." The material 8 may be either jet cast or pressed into the mould, the plates 3, 4 may be replaced by a reinforcement of cast metal. In a modification the non-metallic material 8 surrounds only the magnet body or parts thereof, the reinforcement, which extends partly out of the material, effecting the connection between the parts of the material and the parts of the magnet.
Patent GB-937588-A (GB)
Title: Improvements in and relating to pressure vessels
Inventor: LAMMING LINDEN CYRIL
IPC: F16J15/48
Filed: 1961-08-23
Abstract: 937,588. Reactor pressure vessels. FOSTER-WHEELER L t d. Aug. 21, 1962 [Aug. 23, 1961], No. 30418/61. Class 39 (4). A nuclear reactor pressure vessel is formed of members 10, 12 held together by bolts 14 and sealed by the rings 16, 18 in conjunction with the flexible membrane 26. The joint between the members 10, 12 and 16, 18 is formed by ribs 22 and soft metal rings 20. The areas 33 of the membrane are welded to the rings at 30 and maintained apart by annular insert having radial grooves.
Patent GB-336779-A (GB)
Title: Improvements in or relating to motor car headlamps and the like
IPC: F21S8/10
Filed: 1929-10-08
Abstract: 336,779. Blake, G. J., and Brereton, F. S. Oct. 8, 1929. Light reflected by trough-shaped reflectors.- In a vehicle or like lamp in which the axis of a linear source of light 1 coincides with the focal line of a main parabolic trough-shaped reflector 3 and with the axis of an auxiliary part-cylindrical reflector 2, the main reflector is provided adjacent its vertex 6 with means for suppressing rays which otherwise, due to multiple reflection, would diverge above and below parallel boundary planes 4. 5. For this purpose that portion of the main reflector which corresponds to the projection of the cylindrical reflector preferably is made absorbent by dulling or by means of a black surface. Parts of the lamp may be made movable, for example, the black surface may be pivotally mounted so that it may be moved into a position edge on to the source of light. The ends of the main reflector may be closed by vertical side reflectors 7, 8 in the form of segmental parabolic troughs, and the rectangular front edge so formed may be made circular by means of plane segments 11 - - 14. Specification 228,007 is referred to. According to the Provisional Specification the cylindrical reflector may be incorporated as part of the source of light.
Patent GB-884039-A (GB)
Title: Improvements in well-glass lighting fittings
Inventor: HOLMES JOHN GUYSCLIFFE
IPC: F21V17/00
Filed: 1959-09-07
Abstract: 884,039. Electric light fittings. HOLOPHANE Ltd. Sept. 7, 1960 [Sept. 7, 1959], No. 30460/59. Classes 75(2) and 75(4) A well-glass lighting fitting has an internal screen extending from about the level of the rim of the housing to a level below the filament and so disposed that air can circulate freely between the lamp and screen and between the screen and well-glass. The fitting comprises a hood 1 having mounting means and supporting a lamp-holder 2, the underside of the hood being closed by a ring 4 carrying a well-glass 5. Three clips 7 screwed to the ring 4 engage the rim of a screen 6 so that the upper edge 8 is on a level with the ring 4. The lower edge 9 subtends an angle at the filament 11 of the lamp 3, not greater than 130 degrees. Hot air rises between the lamp 3 and the screen 6, is cooled in the hood and descends between the screen 6 and the glass 5. The screen 6 may be made refracting, e.g. by the provision of ribs on the surface, or reflecting. It may also be made of infra-red absorbing material to keep down the temperature of the well-glass. Specification 591,100 is referred to.
Patent GB-1088239-A (GB)
Title: Colorimeter flow cell
IPC: G01N21/05
Filed: 1965-07-19
Abstract: 1,088,239. Optical apparatus. TECHNICON INSTRUMENTS CORPORATION. July 19, 1965 [Aug. 28, 1964], No. 30524/65. Heading G2J. A flow cell for measuring the light transmission characteristic of a liquid comprises a tubular conduit 84, Fig. 2, for the liquid, a pair of light guides 70, 72, for transmitting light into, and receiving it from, the liquid, and means for varying the optical path length in the liquid between the light guides. As shown the light guides 70, 72, are in the form of bundles of optical fibres, each bundle being mounted in a diametrical hole 96, 106, of a disc 100, 108 so that by pivoting the discs the optical path length between the light guides 70, 72, may be varied, the conduit 84 being surrounded by an outer tube 86 having a highly reflective inner surface. The blocks 88, 92, in which the discs 100, 108, are mounted are slidable along the conduit 84. In a modification, Fig. 5, the light guides 528, 530, are fixed in blocks 510, 514, which are slidable on conduit 522, are urged towards each other by springs 532, and spaced apart by block 512, the blocks 510, 512, 514 all having reflective inner surfaces. The cell may be used in an arrangement for analyzing samples contained in a series of cups (12), Fig. 1 (not shown) on a carrier (10) in which a proportioning pump (22) extracts in turn each sample together with a reagent liquid contained in a well (20) passing them to a mixing coil (52) and then to the flow cell (60), each sample being separated from the adjacent ones by an air bubble.
Patent GB-162020-A (GB)
Title: Foldable hood fittings for vehicles
IPC: B60J7/12
Filed: 1919-12-06
Abstract: 162,020. Harrison, W. W. Dee. 6, 1919. Hoods.-Foldable hood fittings for vehicles comprise parts operating in conjunction with the rear pillars or main prop to produce a parallel ruler-like action, and arms such as h<2>, l, or k, a link i, and bars such as e, g connecting these parts to each other and to an upwardly swinging forward cant-rail whereby, in the position in which the hood is fully closed, the fittings automatically become locked against being pulled or pushed back by a straight-line movement, without the use of locking stretcher bars. Hingedly secured to the body of the vehicle are a middle pillar c, Fig. 1, and a rear pillar a, which are hingedly connected together by the bar e supporting a rear cant-rail d and hinged at g<2> to the bar g carrying a forward cant-rail. A bar h is fixed to the pillar a and, extending above it, forms an arm h<2> hinged to a link i pivoted to a second arm k and a second link j, the other end of which is pivoted to a third arm l at j<2>. The arm l, which is pivoted to the bar e at l<3>, is connected by a link m to the bar g at m<2>. In the closed position, the joints m<2> and j<2> are respectively below the joints g<2>, l<3> so that the hood is locked in that position. In a modification, the pillar c is behind the joint g<2>, the link i is pivoted to the arm l and the arm k and link j are dispensed with. In another form, the bar h, Fig. 5, is pivoted to the body close to the hinge of a secondary prop c pivoted at e<3> to a rearward extension of the bar e. In a further arrangement, the secondary prop c, Fig. 7, pivoted to the bar e is hinged at its lower end to a link mounted on thepivot of the main prop a. A spring extension bar may be used to assist the folding or unfolding of the hood. Reference has been directed by the Comptroller to Specifications 140,149 and 158,404.
Patent GB-1281172-A (GB)
Title: Improved process for preparing 7-aminocephalosporanic acid
IPC: E04F21/12
Filed: 1969-06-17
Abstract: 1281172 Preparing 7-aminocephalosporanic acid ELI LILLY & CO 17 June 1969 [19 June 1968 (2)] 30674/69 Heading C2A 7-Aminocephalosporanic acid is prepared by a process of reacting cephalosporin C or a salt thereof with a nitrosating agent, a carbocyclic arenediazonium salt or a compound that provides positive halogen, at a temperature below 60 C. in a solvent, and hydrolysing the resulting intermediate to give the 7-aminocephalosporanic acid, in which process an alkylene oxide containing 2 to 4 carbon atoms or #-propiolactone is added to the reaction mixture to obtain the 7- aminocephalosporanic acid. The alkylene oxide or propiolactone may be added to the hydrolysed reaction mixture resulting from treatment of the intermediate with water and/or a C 1 -C 3  alkanol, in which case its function is to precipitate the 7-aminocephalosporanic acid (7-ACA). Alternatively it may be added to the residue left after evaporating the reaction solvent before hydrolysis, when hydrolysis is brought about without the use of water and/or alkanol and 7- ACA is precipitated directly on adding the alkylene oxide or propiolactone. The reaction solvent is preferably a mixture of formic acid and nitroalkane with or without acetonitrile. Excess of the nitrosating agent, arenediazonium salt or compound providing halogen is preferably destroyed after the reaction, e.g. by adding ammonium sulphamate. Suitable alkylene oxides are ethylene oxide (i.e. oxirane), 1,2- propylene oxide, butene-1-oxide and butene-2- oxide. They may be added in a solvent, preferably all at once, suitable solvents being acetonitrile, ketones, esters, dioxane and tetrahydrofuran, which are poor solvents for the 7-ACA. 3-30 moles of alkylene oxide per mole of cephalosporin C starting material are used. Reference has been directed by the Comptroller to Specification 948858.
Patent GB-744478-A (GB)
Title: An improved cylinder machine for the refining of chocolate
IPC: B02C4/36
Filed: 1952-12-04
Abstract: 744,478. Roller mills. CAVALIERI, E. Dec. 4, 1952 [Dec. 4, 1951], No. 30808/52. Class 59. [Also in Group XXIX] In a roller mill for refining chocolate comprising a series of rollers the axis of one of which is fixed and the axes of the others movable, the journals of the movable rollers, or the supporting members therefor, are each urged towards an adjacent roller by hydraulic pressure, and manually-operable screw-threaded means are provided for adjusting the hydraulic pressure which is continuously indicated by means such as pressure gauges. As shown, the ends of each roller e.g. A4 are each subjected to the pressure developed by a hydraulic control device e.g. C4 having a pressure chamber 8 from which fluid is conveyed to the chamber 16 of a device e.g. D4 so as to move a piston 17 and thereby the support e.g. B4 for the roller journal. Located in the chamber 8 is a manually-actuated screw-threaded piston 9 the screw-thread 11 of which engages a screw thread 12 on the body 7 of the control device. The pressure in the chamber 8 is indicated by a gauge e.g. E4. The supports B2, B3, B4 are subjected to the action of return springs 20. The support B of the roller A is fixed. The support B 1  for the roller A 1  is pivotally mounted at 5 and its end 4 is subjected to the action of the piston 17. The pressure fluid is introduced into each control device by means of an axial conduit 21 in the piston 9, the conduit being closed by a screw plug 22 and being provided with a spring-influenced oneway valve. The device D 1  is provided with a spring-influenced safety valve 25 which, when the pressure exceeds a predetermined value, allows the fluid to discharge through one or more ports 30. The device D 1  may also be provided with means to allow air to discharge in the charging phase of the device.
Patent GB-651688-A (GB)
Title: An improved automatic blow-down valve
IPC: F16K31/122
Filed: 1948-11-27
Abstract: 651,688. Steam boiler blow-down apparatus. HOLLINGBERY, W. B. Nov. 27,1948, No. 30847. [Class 123(ii)] [Also in Group XXIX] A blow-down valve 6a which is opened to discharge sludge &c. from a boiler on operation of the throttle or other control means cf the engine supplied by the boiler and which is closed when the throttle is closed, is operated by a piston 8 and is formed with a clearing needle 6b adapted to clear a constricted valve outlet orifice 5a in a disc 5 each time the valve is operated. The valve head 6a co-operates with a seat 4b some distance below an inclined sludge inlet port 4a in an insert 4. The disc 5 may be exchanged for another with a different sized orifice. The piston 8 is connected to the valve rod 6 and operates against a spring 11 in a cylinder 9. In the case of a locomotive, the space 9a below the piston 8 is connected to the steam chest by a pipe 10. The space above the piston 8 is vented by a pipe 13 and a passage 12a closed by the end of the rod 6 when the blow-down valve is open.
Patent GB-1515090-A (GB)
Title: Electrical switch
IPC: H01H3/46
Filed: 1976-07-23
Abstract: 1515090 Actuation of switches HAZEMEIJER BV 23 July 1976 [24 July 1975] 30896/76 Heading H1N An electrical switch contact driving mechanism, in which the switch contacts are closed by a tensioned spring mechanism, comprises two springs 1, 2, which bear at their one ends against a support 16, 19, and at their other ends against respective flanges 3, 5 supported on an activating shaft 4 movably guided by the support, the activating shaft being coupled to a system of rods 25, 30, 35, through which it operates the contacts, the springs 1, 2 being coil springs arranged coaxially with respect to each other, and released at different times during contact closing to produce a predetermined operating force characteristic, Fig. 4, not shown. Spring 1 is released first by release of lever 21 by latch 26 and acts directly on the shaft 4 to start the contact closing operation. The other spring 2 acts on the shaft 4 via a system of bushes incorporating a ball-notch coupling comprising a number of balls 8 seated in holes in a bush 6 on the shaft 4, the shaft having a groove portion 9 into which the balls can drop to release a second bush 10 and release this spring 2 at a point in the travel of the shaft when it adds its force to the first spring 1. Shaft 33 directly drives the contacts and is linked to the activating shaft via links 25 and 30 and crank 32. The springs 1, 2 are tensioned by manual or motorized rotation of a cam 20 which moves shaft 4 via lever 21 until lever 21 is latched by latch 26. Opening of the contacts is effected by displacement of latch 41 to release plate 38 which rotates under the action of a switch-off spring, not shown.
Patent GB-860069-A (GB)
Title: Improvements in paints based on portland cements
Inventor: JONES KENNETH WILSON
IPC: C04B24/12
Filed: 1956-10-10
Abstract: Dry, powdered, free-flowing cement base paint compositions comprising Portland cement powder and water-repellent material are rendered readily wettable and dispersible in water by the inclusion in the dry mix of a straight or branched chain aliphatic primary mono-amine or mixture of such amines, e.g. the commercial mixture of C6 to C10 amines known as "Armeen 8." Preferably, 0.05 to 2.0% by weight of the amine, or amine mixture, based on the weight of the total solids content of the dry mix, is incorporated therein.  The compositions may also include hygroscopic salts, e.g. sodium chloride, pigments, e.g. titanium, iron and chromium oxides, fillers such as sand, whiting and hydrated lime and include as water-repellent material, fatty acid soaps or esters, long-chain fatty acids or silicones. Setting accelerators may also be incorporated, if desired.ALSO:Dry, powdered, free-flowing cement base compositions comprising Portland cement powder and water-repellent material are rendered readily wettable and dispersible in water to produce a coating composition by the inclusion in the dry mix of a straight or branched chain aliphatic primary mono-amine having 6 to 10 carbons atoms per molecule, or a mixture of such amines, e.g. the commercial mixture of C6 to C10 amines known as "Armeen 8".  Preferably 0,05% to 2,0% by weight of the amine, or mixture of amines, based on the weight of the total solids content of the dry composition, is incorporated therein. The compositions may also include hygroscopic salts, e.g. sodium chloride, pigments, e.g. titanium dioxide, iron oxide, chromium oxide, fillers, e.g. sand, whiting, hydrated lime, and include as water-repellant material fatty acid soaps, fatty acid esters, long-chain fatty acids or silicones.  Setting accelerators may also be incorporated if desired.
Patent GB-654169-A (GB)
Title: Improvements in or relating to apparatus for preparing and registering printing forms
IPC: G03F9/00
Filed: 1947-11-21
Abstract: 654,169. Optical apparatus. TAYLOR, A. K. Nov. 21, 1947, No. 30930. Convention date, March 23, 1939. [Class 97 (i)] [Also in Group XVI] A transparent reflector 27, Figs. 5 and 6, is located midway between and parallel to a printing forme 1 containing movable members to be registered thereon, and a sheet 7 placed on glass 6 and having on it representation of detail with which the movable members are to be registered (see Group XVI). The reflector comprises a glass sheet 29, a thin coat of silver 30 and a protecting glass sheet 31 and is mounted in a frame 21 of a slidable carriage 20, the lower part of which is provided with sockets holding four electric bulbs silvered on one side to allow of directing the light to any desired position by turning them. The movable members are moved until they are viewed from 37 in alignment with the reflected image of the corresponding representation on the sheet 7.
Patent GB-603980-A (GB)
Title: Improvements in chairs and like articles of furniture
IPC: A47C1/024
Filed: 1945-11-19
Abstract: 603,980. Seats. HICKS, Ltd., B., (formerly BERESFORD & HICKS (BEDDING), LTD.), and HICKS, R. B. Nov. 19, 1945, No. 31095. [Class 52(ii)] A chair comprises a fixed supporting base or frame and a chair proper consisting of a seat and back hinged at the front to the base and adjustable angularly by means of cables or other flexible members. As shown the chair proper comprises seat 3 and back 7 hinged to the fixed base 1 by means of a transverse rod 8 having at each of its ends a worm wheel 10 co-operating with a worm 11 on a shaft 12. The shaft 12 is provided with winding means comprising a cable, cord or the like 14 whereby the seat 3 and back may be brought to any desired angular inclination. A manipulating handle is provided on the end of the shaft 8. The cable &c. 14 may incorporate springs or may itself be resilient whereby the 'seat and back may be allowed to rock. In a modification the frames of the base and of the seat &c. may be of tubular metal.
Patent GB-481987-A (GB)
Title: Improvements relating to pivotal fittings for casement windows, fanlights and the like
IPC: E05D7/08
Filed: 1936-11-14
Abstract: 481,987. Hinges. SHOWELL & SONS, Ltd., E., and ALLART, J. W. Nov. 14, 1936, No. 31143. [Class 65 (ii)] Pivoting -adjustments.- A pivot for windows, mirrors and the like comprises a pair of members 11, 14, the former having a recess to receive an annulus carried by the latter, the annulus being split at diametrically opposite parts 14c and provided with a screw pin 15 screwed into one part of the split annulus at right-angles to the line joining the splits 14c and adapted to press on the other part to expand the annulus into frictional engagement with the socket. The head end of the screw pin 15 is accessible in the closed position of the window through a hole in the wall of the member 11. The splits 14c in the annulus may connect with peripheral slits 14d. The members 11, 14 may have fixing parts parallel to the axis of the pivot, as shown, or either or each of the members may have fixing parts at rightangles to the axis. One of the members may be provided with a separate fixing plate at rightangles to the axis, being attached to the plate by the usual undercut tapering tongue engaging corresponding guides.