baber/WOPTO huggingface dataset:
Patent GB-575287-A (GB)
Title: Improvements relating to connector pins for electrical plug and socket connections
IPC: H01R13/05
Filed: 1943-12-09
Abstract: 575,287. Two-part couplings. BRITISH MECHANICAL PRODUCTIONS, Ltd., and DEAKIN, S. T. Dec. 9, 1943, No. 20626. [Class 38 (i)] A connector pin consists of two resilient prongs 5 connected at one end by an eye portion 6 surmounted by an integrally formed die-cast, hot stamped or welded-on head piece 7, comprising a tube for a lead wire and having a threaded hole to receive a clamping screw 9. The tube may be in the position shown or may run parallel to the lengthwise direction of the pin, the clamping screw then being perpendicular to its former position. Specification 421,128 is referred to.
Patent GB-1458059-A (GB)
Title: Aircraft and operating method
IPC: B64C15/14
Filed: 1974-05-10
Abstract: 1458059 VTOL aircraft ROCKWELL INTERNATIONAL CORP 10 May 1974 [28 June 1973] 20714/74 Headings B7G and B7W An aircraft 10 having a fuselage 11, main wings 12, 13 and canard wings 14, 15 has in each wing a set of pivotable flaps which, as shown in Fig. 1, may be moved out of alignment with their respective wing surfaces to form substantially vertical ducts through which engine exhaust gas is discharged to provide jet lift. A shroud 46 round engine section 42 delivers compressed gas to longitudinal ducts 47, 48 which communicate with spanwise ducts in the various pivotable flaps. Selecting the arrangement shown in Fig. 3 for wing 13, flaps 23, 24, 25 are respectively mounted on pivotable ducts 50, 55, 60 which connect with duct 48. Gas from duct 48 is discharged through slots 54, 58, 63 to act as an ejector as indicated by arrows thereby providing jet lift. Linkwork and hydraulic mechanism is described, controlled by a control stick and a rudder bar whereby the flaps may be adjusted to control the aircraft in pitch roll and translational motion. In forward flight the flaps in each wing are folded together to give an unbroken wing profile.
Patent GB-459898-A (GB)
Title: Improvements relating to the construction of boilers for steam generation and water heating
IPC: F22B15/00
Filed: 1935-07-22
Abstract: 459,898. Water-tube steam boilers. TULLOCH, R., 62, Bell Street, Dundee. July 22, 1935, No. 20759. [Class 123 (ii)] A water-tube steam boiler or water heater comprises vertical front and rear headers or water chambers 4, 5, connected by horizontal pipes 1 to form the roof and sides of the combustion chamber with vertically disposed gills or fins 2 extending into the spaces between adjacent gills of adjacent pipes. The portions of the pipes directly opposite or enclosing the firegrate 3 may be left without gills.
Patent GB-1362946-A (GB)
Title: Multiplexer-demultiplexer for microwave antennas
IPC: H01Q5/00
Filed: 1973-05-02
Abstract: 1362946 Aerials; multiplex radio signalling THOMSON-CSF 2 May 1973 [5 May 1972] 20759/73 Headings H4A and H4L A multiplexer/demultiplexer for signals in 1st, 2nd and 3rd frequency bands (in order of increasing frequency) comprises a port A which, as described, is coupled to a hoghorn forming the primary feed of an offset Cassegrain-type aerial (Fig. 1, not shown). The port A is coupled by a circular-to-square transition 10 to the main square waveguide section of a first directional coupler 12. The transition 10 contains nickelchrome coated glass resistors which suppress unwanted higher waveguide modes. Considering action as a demultiplexer, all received signals in the three frequency bands are passed into the coupler 12, but any vertically polarized signals in the 1st frequency band (e.g., 3À6 to 4À2 GHz) are coupled out at its port 4V. A second directional coupler 13 follows the coupler 12, but is disposed at 90 degrees thereto about the joint longitudinal axis. The remainder of the signals in the 1st frequency band, which are horizontally polarized, are coupled out at the port 4H of the coupler 13. The remaining signals, in the 2nd and 3rd frequency bands (e.g., 5À9 to 6À4 GHz and 6À4 to 7À1 GHz, respectively) are passed via a square-to-circular transition 14 to the main part of a polarizer 15. Horizontally polarized signals are coupled from a port H of the polarizer into a frequency separator 20. This comprises a waveguide 21, which is provided with a compensating stub 22 and a matching network, a Y-junction 23, and two band-pass filters 24, 25. As described, these are Tschebyscheff type ten-cavity filters having respective pass bands of 6À7 to 7-1 GHz and 6À2 to 6À4 GHz and provided with isolators at their output ports to improve impedance matching. Vertically polarized signals are coupled from a port V of the polarizer into a frequency separator 30. This is generally similar to the frequency separator 20, and comprises a waveguide 31, with a compensating stub 32 and a matching network, a Y-junction 33, and two band-pass filters 34, 35 having respective ranges of 6À4 to 6À7 GHz and 5À9 to 6À2 GHz.
Patent GB-499766-A (GB)
Title: Improvements in braking apparatus
IPC: B60T13/24
Filed: 1937-07-27
Abstract: 499,766. Fluid-pressure brakes. BOSCH AKT.-GES., R. July 27, 1937, No. 20809. Convention date, July 27, 1936. [Class 103 (i)] In braking apparatus for tractors and trailers controlled by a main valve 16 which controls the tractor brake cylinder 17 and also controls a secondary valve 26 which controls the trailer brake cylinder 23, the secondary valve 26 is initially operated by the brake pedal 10 through a mechanical connection 45 comprising a spring 43 in order that the trailer brake shall not lag behind the tractor brake. The trailer brake is spring applied and fluid-pressure released and is normally connected to the compressed air reservoir 20 by the value 26 through pipes 21, 30. Movement of the pedal 10 to apply the brake supplies fluid to the brake cylinder 17 and a chamber 27, Fig. 2, of the valve 26. Movement of the tractor brake connections 12, 13 operates the connections 43, 45 which by means of a lever 37 and cam 39 closes a valve 34 on its seat to disconnect pipes 21, 30 and forces a piston 33 away from the end of the sleeve valve 32 thus connecting the tractor brake cylinder 6 the atmosphere through sleeve valve 32 and a port 36. An initial release of pressure is thus obtained to apply the trailer brake further application being produced by the action of pressure fluid from the valve 16 on the piston 28. Specification 334,592, [Class 103 (i)], is referred to.
Patent GB-969389-A (GB)
Title: Improvements relating to studs for use in welded structures
Inventor: BOWDITCH DESMOND
IPC: B23K35/02
Filed: 1962-05-30
Abstract: 969,389. Weld - studs ; heat insulation. CAUSEWAY STEEL PRODUCTS Ltd. May 24, 1963 [May 30, 1962], No. 20827/62. Headings F2H and F2X. [Also in Division B3] A number of rods, e.g. of mild or stainless steel, are welded side by side at one point or more along the length of the stud formed by the joining together of the rods. The result is a stud in which the constituent rods can be bent away from each other above a weld point to form wings so that when the stud is welded on the wall of a vessel, refractory concrete sprayed on as a lining is anchored. The cross section of the stud is circular and a rod or strip, which may be calibrated, is included in the rods to stand proud of the wing-forming bends to act as a depth gauge for the refractory lining. Any excess length of the gauge may be cut off after lining. A reinforcing mesh may be welded to the wings or to the gauge before spraying the refractory material. There may be a weld interconnecting the rods near one end of the stud and another between the stud ends. A pellet of metal may be inserted between the rod surfaces to be joined together, before passing a welding current, or high points may be formed on the adjacent rod surfaces. There are pits in the rod surfaces, opposite the pellet or high points, to receive the electrodes of a spot-welding machine. The rods are thus welded together with slight gaps between their opposed surfaces.
Patent GB-1206214-A (GB)
Title: Centrifugal separator
Inventor: KOMPERT PAUL
IPC: B04B1/20
Filed: 1968-05-02
Abstract: 1,206,214. Centrifugal separator. ALFA-LAVAL A.B. 2 May, 1968 [26 May, 1967], No. 20931/68. Heading B2P. A screw conveyor 2 for discharging sludge separated out of a liquid substance supplied to the rotor 1 of a centrifuge is supported at its ends by shafts 9, 12 which are detachably coupled to the conveyor and are journalled in the rotor. The rotor 1 is rotatably supported in bearings 6 and is connected by means of a hollow shaft 8 to a planetary gear 7 to which the screw conveyor 2 is connected by means of the solid shaft 9 so that it rotates at a speed slightly different from that of the rotor. The shaft 9 is journalled by means of a combined radial and axial bearing 10 in one end wall 11 of the rotor and by means of a radial bearing (not shown) outside the end wall 11 and is splined to the screw conveyor 2. The shaft 12, which is hollow, is journalled by means of a radial bearing 13 in the other end wall 14 of the rotor and by means of another bearing outside this end wall and is a friction fit within a bore 16 of the screw conveyor; alternatively, the shaft 12 is splined to the screw conveyor. Protection of the bearings 10, 13 is effected by seals 17, 19. The construction affords easy dismantling of the centrifuge for cleaning purposes without the bearings being exposed. The liquid substance to be clarified is fed through a pipe 3, the sludge being discharged at 4 and the clarified liquid at 5.
Patent GB-1439173-A (GB)
Title: Security paper and device for checking the authenticity of such papers
IPC: G07D7/1205
Filed: 1973-05-03
Abstract: 1439173 Credit cards and the like GAO GES FUR AUTOMATION UND ORGANISATION mbH 3 May 1973 [3 May 1972] 21033/73 Heading B6A [Also in Divisions G4 and C4] A method of securing a paper against forgery and determining its authenticity, comprises providing therein or thereon, either all over or in selected regions, fluorescent materials which fluoresce in the visible, U.V. or I.R. spectral range with characteristic emission spectra when excited, and identifying a radiation peak that occurs within a half-value bandwidth of 1À5. The characteristic spectra may be in the form of emission line doublets. The authenticity check is carried out by a spectrophotometer having an excitation energy source and an array of photoelectric cells each responsive to radiation of a respective wavelength. The source may be a gas discharge lamp, a photo-flash, incandescent lamp, X-ray tube, electron ray tube or radioactive substance. The resultant fluorescence is passed through an interference filter, dispersion prism or grating having a 1À5 half-value bandwidth cut-off. Other fluorescent materials, whose authenticity is not to be checked, may be present on the paper. The signals from the photoelectric cells are subtracted or divided for verification.
Patent GB-1338102-A (GB)
Title: Machine tools
IPC: B23Q5/40
Filed: 1971-04-19
Abstract: 1338102 Machine tool details WERKZEUGMASCHINENFABRIK ADOLF WALDRICH COBURG 19 April 1971 [6 Feb 1970] 21108/71 Heading B3B In a portal type machine tool, e.g. a planar or milling machine, having vertical columns, a crosshead and a vertically movable cross rail 1 carrying a tool head, and provided with lead screw 5 and nut 12 elevating means at each end of the cross rail, there is further provided adjustment means between the nut and an abutment member 11 at one end of the cross rail to compensate for un-even loading between the two lead screws 5, the adjustment means comprising a wedge member 13 movable transverse to the lead screw and including a slot 14 through which the lead screw passes. The wedge is moved by a motor 10 which receives control pulses from electronic sensing means (8) (Fig. 1, not shown) sensitive to angular deviation between the crosshead 1 and a table (7) of the machine tool. Roller bearing elements 17 are provided on the wedge surfaces and the wedge is moved by a screw drive 20. Either the lead-screw is rotated in a rotationally fixed nut or the nut is driven relative to a rotationally fixed lead screw (Figs. 4 and 5, not shown).
Patent GB-788599-A (GB)
Title: Improved silicone foamed resins
IPC: C08J9/00
Filed: 1955-07-21
Abstract: A foamed resin having a density of less than 50 pounds per cubic foot may be made by heating a composition consisting essentially of from 15 to 75 parts by weight of powdered aluminium per 100 parts of an alkyl polysiloxane resin having an average of from 1 to 1.6 total alkyl radicals containing less than 3 carbon atoms and phenyl radicals per silicon atom, a blowing agent and desirably a curing catalyst, at a temperature, e.g. from 30 DEG  to 300 DEG  C., sufficient to cause foaming of the resin and curing thereof.  Blowing agents specified are sodium bicarbonate, p,p1-oxy-bis-(benzenesulphonylhydrazide), dinitrosopentamethylenetetramine, methylhydrogensiloxane and ethylhydrogensiloxane, these last two compounds being used in conjunction with a hydroxylated compound such as butanol or a silanol as described in Specification 788,598.  Catalysts specified are dibutyl-tin-diacetate, lead 2-ethylhexoate, amines, alkali metal hydroxides, ferric chloride, and quaternary ammonium salts.  In examples, foamed resins are made by heating specific siloxanes with aluminium powder, dinitrosopentamethylenetetramine and 2-ethylhexoic acid and with or without diatomaceous earth. Specifications 717,807 and 769,237 also are referred to.
Patent GB-1419633-A (GB)
Title: Glow discharge display device
IPC: H01J17/49
Filed: 1972-05-08
Abstract: 1419633 Woven fabrics MULLARD Ltd 5 March 1973 [8 May 1972] 21359/72 Heading D1K [Also in Division H1] Crossed conductors 4 and 5 forming the electrode arrays of a glow discharge dispersing device (see Division H1) are interlaced with fibres 6 of electrically insulating material so that each discharge path at the crossing points of the conductors is substantially completely surrounded by fibres. The conductors 4 or 5 may be either bare or coated with an electrically resistive layer. The fibres 6 are preferably of glass. In one construction, Fig. 2a, each conductor 4 and 5 appears on both sides of the fabric. In an alternative construction, Fig. 3a, conductors 4 and interposed fibre-glass cords 8 held by fibre-glass cords 6 form one layer on which is placed a second layer comprising conductors 5 and interposed glass-fibre cords 9 held by fibre-glass cords 7.
Patent GB-592948-A (GB)
Title: Lubrication system for a rotor
IPC: F16C33/66
Filed: 1944-11-01
Abstract: 592,948. Lubricating. ARMSTRONG SIDDELEY MOTORS, Ltd., and HEPPNER, F. A. M. Nov. 1, 1944, No. 21407. [Class 12 (iii)] A lubricant draw-off arrangement for a highspeed rotor supported on anti-friction bearings comprises a stationary scoop located interiorly of the rotor with means for moving it intermittently into and out of operative position, i.e., into and out of proximity to an oil-collecting channel formed in the rotor at a greater radial distance than the outer ball race. The movement out of operative position allows the oil annulus to build up after the cavitation effect of the high-speed relative movement of the scoop. Such cavitation effect would otherwise prevent proper draw-off. The scoop may be withdrawn every five seconds. As shown in Fig. 1, a scoop 11 slidable tangentially in a stationary support shaft 14 projects into an oil-collecting channel 12 on an interior surface of a high-speed rotor 13 under the action of a lever 19 pivoted in a slot 21 cut in the support shaft 14 and under the pressure of a semi-circle spring 22. The intermittent withdrawal of the scoop 11 is effected by oil pressure admitted from a central supply shaft 28 to act on a diaphragm 26 whereby a stem 25 thereon forces the lever outwards so to withdraw the scoop. In the form shown in Fig. 2, the scoop 11a. which is stream-lined in the direction of relative flow of the oil ring in the rotor channel 12a and the head of which is given a slope, is retracted radially by oil pressure intermittently admitted from a supply shaft port 29a through a duct 42 to act on the upper face of the pistonlike base 34 by which the scoop is carried. This- Figure shows the lubricating arrangements for the angular contact ball bearings supporting the rotor as described in Specification 592,947, the oil from the bearings collecting in grooves 37, 38 and then passing through ducts 39 to the collecting channels 12a. The oil drawn off by the scoop passes away to a space 40 below the piston-like base 34 and thence by a duct 41 to a scavenging pump; this duct is shut off by the piston 34 when the scoop is retracted. Specification 561,246 also is referred to.
Patent GB-799509-A (GB)
Title: Sealing means between relatively axially-movable inner and outer cylindrical members
IPC: F15B1/24
Filed: 1955-07-25
Abstract: 799,509. Piston packing. MERCIER, J. July 25, 1955 [July 31, 1954], No. 21470/55. Addition to 767,046. Class 122 (1). [Also in Group XXIX] The piston 16 of a gas-loaded hydraulic accumulator is sealed by three spaced resilient 0-rings 24, 25, 26 each housed in an annular groove 21, 22, 23 in the piston, and the space 28 between the ring 26 adjacent the liquid chamber 18 and the intermediate ring 25 is connected with the liquid chamber and with the space 27 between the intermediate ring 25 and the ring 24 adjacent the gas chamber 17 respectively through passages 35, 41 in the piston controlled by spring-loaded non-return valves 36, 42 respectively permitting flow only in the direction toward the liquid chamber. The spaces 27, 28 communicate through ports 31, 32 with chambers 33, 34 respectively, the chamber 33 including a space B filled with foam rubber.
Patent GB-302612-A (GB)
Title: An improved manufacture of mica tubes and sheets
IPC: H01B3/04
Filed: 1927-08-15
Abstract: 302,612. Lloyd, A., and Bakelite, Ltd. Aug. 15, 1927. Drawings to Specification. Mica.-Mica tubes, sheets, &c. are made by applying to mica flakes a varnish of a phenolurea-aldehyde condensation product with or without a usual plasticizing agent, forming them into sheets, evaporating the solvent and heating to harden the condensation product sufficiently to prevent the sheets from sticking together when piled, shaping hot, and completing the hardening. A suitable condensation product is one made from 100 parts by weight of phenol, 60 parts of urea, and 250 parts of 40 per cent formaldehyde.
Patent GB-748038-A (GB)
Title: Improvements in air- or gas-blast electric circuit breakers
Inventor: FAWDREY CECIL ARTHUR
IPC: H01H1/38
Filed: 1953-08-04
Abstract: 748,038. Gas-blast switches. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Aug. 4, 1954 [Aug. 4, 1953], No. 21535/53. Class 38(5) In a gas-blast switch wherein a number of radially-arranged contact-fingers 4 project through apertures 17 in an annular, blast-gas actuated piston 14 into engagement with a fixed contact 3, and are moved about their pivots 5 against the action of springs 6 by the opening movement of the piston, the latter is arranged to push the fingers clear of the arc space so as toshield them. In the fully-open position the piston comes against a metal throat member 18 to which the arc may be transferred.
Patent GB-349361-A (GB)
Title: Manufacture of vat-dyestuffs
IPC: H02K27/06
Filed: 1930-07-16
Abstract: A compound of the general formula:  <PICT:0349361/IV/1> wherein the nucleus R may contain one or more substituents, is condensed with an isatin-a -derivative to give fast greenish-blue to green dyestuffs. The a -anthrone compounds of the above general formula are obtained by treating the reduction products of acylated-1.4-dihydroxyanthraquinones (prepared according to Specification 340,639) with an alcohol in the presence of a mineral acid.  In examples: (1) 1-hydroxy-4-acetoxy-10-anthrone (prepared by reducing diacetylquinizarin in an acetic acid suspension with sodium hydrosulphite) is converted to the monomethylether of 1.4-dihydroxyanthrone by boiling with methanol and hydrochloric acid, and this ether is condensed with isatin-a -anilide; the corresponding monoethylether may be prepared by using ethylinstead of methyl alcohol and may similarly be condensed with isatin-a -anilide or with 5-chlorisatin-a -p-chloranilide: (2) 5-8-dichloro-1-hydroxy-4-acetoxy-10-anthrone (prepared by reducing diacetyl-5-8-dichlorquinizarin) is converted to a monomethyletherdichloro derivative by boiling with methanol and hydrochloric acid, and this derivative is condensed with isatin-a -anilide.  It is also stated that the reduction products of 1-acetoxy- and 1.8-diacetoxyanthraquinone cannot be thus condensed with an isatin-a -derivative.
Patent GB-1474643-A (GB)
Title: Device for measuring fractionary volumes of liquid samples
IPC: G01N1/18
Filed: 1975-05-20
Abstract: 1474643 Metering liquid INTERTECHNIQUE 20 May 1975 [30 July 1974] 21555/75 Heading B8N [Also in Division G1] A device for measuring fractions of a sample of liquid into test cells 15 comprises a casing 10 with a central chamber 14 to receive the liquid, a set of measuring pockets 13 leading via capillary ducts 16 to the test cells 15 and a closure 11 to isolate the chamber from the pockets. The pockets are filled and isolated by the closure and the device is placed in a centrifuge so that the pockets are emptied via the ducts 16 into the respective cells 15. The device is made of plastics and at least the lower plate 18 is containing the cells is transparent to permit an automatic photocolourimeter to be used. The closure may be used as a measure to fill the chamber 14, and may be apertured and rotated to co-operate with apertures in the chamber wall to fill the pockets. The cells may be arranged in a number of concentric rows. The device is used in medicine and biochemistry to test susceptibility of bacteria to antibiotics. The cells contain a reagent (20), Fig. 1 (not shown), of a culture medium, an antibiotic and a pH indicator. The device can be used for quantitative analysis on samples of urea or cholesterol. A capsule 31, Fig. 4, which is opened by fracture of a plastics or metal strip 35 is used if two reagents are required which cannot be mixed prior to the filling of the cells with the sample liquid.