baber/WOPTO huggingface dataset:
Patent GB-504861-A (GB)
Title: Secret electric signalling system
IPC: H04K1/04
Filed: 1938-05-10
Abstract: 504,861. Secret transmission. STANDARD TELEPHONES & CABLES, Ltd May 10, 1938, No. 13947. Convention date, June 23, 1937. [Class 40 (iv)] In a system in which the signal band is fed in parallel to a number of modulators which shift the band progressively to higher overlapping frequency positions, and the frequencies common to all the shifted bands are selected and shifted to adjacent positions to form a combined band embracing the same range as the original band, the modulating frequencies are so chosen that the common frequencies of the shifted bands lie within the range of the original band. The apparatus shown in Fig. 1, is coupled by hybrid coils H1, H2 to eastbound and westbound circuits TE, TW and acts both as a scrambler and a descrambler, the modulators M1, M2 being reversible, preferably of the double-balanced copper-oxide rectifier type. In four channels B-E, the signal band of 250-3000 cycles is shorn of the frequencies above 2450 cycles by filters F1 and the remaining frequencies are raised by modulators M1 in steps of 550 cycles as indicated in Fig. 2. In a fifth channel A, no modulation takes place and an attenuation pad P1 provides a loss equivalent to that introduced by F1, M1 in the other channels. The frequencies 2450-3000 cycles common to all the channels are selected by filters F2, and these sub-bands are interchanged in accordance with a periodically variable scheme by switching apparatus SW in the manner described in Specification 366,921 and fed directly or through inverters I to filters F2, modulators M2 and filters F1 an attenuation pad P2 being substituted for M2, F1 in the channel A. The sub-bands are thus recombined to form a scrambled band of the same range as the original band. The modulating frequencies of the modulators M1, M2 and of the inverters I are supplied by a tone generator TG having a number of toothed inductor wheels 4-8 with stators carrying exciting and pick-up windings W1, W2. The shaft of the switching apparatus SW may be driven from the shaft of the tone generator TG.
Patent GB-1176983-A (GB)
Title: Tell-Tale Apparatus for Use in Conjunction with Electrical Appliances
Inventor: SANDERS HANS BERNARD
IPC: G01R31/327
Filed: 1967-03-28
Abstract: 1,176,983. Protective arrangements. H. B. SANDERS. 28 March, 1967 [28 March, 1966], No. 13968/67. Heading H2K. [Also in Division G1] Tell-tale apparatus for use with or in an electrical appliance operating on line and neutral supply and having a supposedly earthed casing, in order to determine the adequacy of the earthing of the casing, includes a pair of indicators mounted on a support and connected in series, the series pair being adapted for connection across the appliance supply, and a contact member in connection with the interconnected sides of the indicators and adapted to be connected in use to the appliance casing either by direct contact or by a probe, whereby the indicators may indicate the adequacy or otherwise of the earthing of the casing. The apparatus may be incorporated in a switched plug socket to which the appliance will be connected. Two differently coloured (green and red) neon lamps 2 and 3 are connected in series between live and neutral terminals, while a lead 9 connects their common junction to an external terminal. Initially, the correct connection of the supply may be tested. With the switch off, the external terminal is connected to earth. Should lamp 3 glow, either the line and neutral connectors are reversed or the earth is live. If, however, no lamp glows the appliance may be connected and the switch turned on with terminal 11 disconnected, whereupon both lamps should glow to show that live and neutral sides of the supply are present at the socket. If terminal 11 is now connected to the appliance casing only lamp 2 should remain on. If both remain on, faulty earthing of the casing is indicated, while if only lamp 3 remains on, the casing is live. The socket arrangement may be embodied in a portable plug (Fig. 5, not shown). In other arrangements, the lead 9 may be kept permannently connected to the casing of the apparatus under test, so that a single (green) lamp normally glows, but either both lamps glow if the earthing of the casing becomes faulty or the other (red) lamp alone glows if the casing becomes live (Figs. 4 and 6, not shown). An audible alarm may replace the red lamp, and a circuit breaker may operate in response to a detected fault condition to interrupt the supply.
Patent GB-839799-A (GB)
Title: Improvements in or relating to the manufacture of hollow inflatable articles and to valves therefor
IPC: B29C41/04
Filed: 1958-05-01
Abstract: 839,799. Moulding balls. DELACOSTE & CIE. May 1, 1958 [Feb. 5, 1958], No. 13979/58. Class 87(2). [Also in Groups XV and XXIX] A method of centrifugal moulding playballs and footballs of india rubber or plastic materials provided with a valve, is characterised in that a tubular member 1, preferably of plasticised vinyl chloride is threaded on a core forming rod 2 having a shoulder 4 which is inserted in a cavity in the inner wall 5 of the mould 6 the shoulder being positioned at a short distance, of the order of 0À1 inch from the inner wall of the mould. Upon completion of the centrifugal moulding, a layer 7 is deposited on the inner wall of the mould which extends around the core 2 to constitute a valve body 8. After removal of the article from the mould, the core 2 is withdrawn and a plug 9 preferably of metal, provided with a head 10 of the same diameter as the core shoulder 4 and formed with a screwdriver slot 11, is force-fitted into the valve body. The head 10 of the plug engages in the recess provided by the shoulder 4. The other end of the plug may be provided with an enlargement 12 to retain the plug in position. The plug is also provided with an orifice 13, inclined to the plug axis, which extends from the head 10 of the plug and emerges laterally from the plug body. A needle of slightly smaller diameter than the diameter of the orifice 13 and heated to an adequate temperature is then threaded through the orifice 13 to perforate the valve body 8 to provide an orifice 15. The needle is subsequently withdrawn and the valve is ready for use. To inflate the article the plug 9 is rotated until the orifices 13 and 15 are at least partially in alignment, as will be indicated by a slight hissing. The plug is then rotated slightly in the reverse direction until the hissing ceases. When so adjusted the resilient edge of the orifice 15 under pressure of air remaining in the article prevents further escape of air, but is capable of flexing to admit air into the article, for example by the application of a pump to the valve. To deflate the valve, the orifices 15 and 13 are brought into alignment by rotating the plug.
Patent GB-774189-A (GB)
Title: Marine propulsion apparatus
Inventor: MURRAY GEORGE HAMILTON
IPC: B63H23/00
Filed: 1954-05-13
Abstract: 774,189. Propelling ships. NAPIER & SON, Ltd., D. May 13, 1955 [May 13, 1954], No. 14102/54. Class 114. In a marine propulsion unit comprising a main engine driving a propeller through transmission mechanism including a main clutch, and an auxiliary engine capable of being connected to the propeller through an auxiliary clutch, a source of hydraulic pressure for operating the latter clutch is controlled by or responsive to the speed of rotation of the auxiliary engine. The main engine 10 drives the propeller 12 through an " ahead- and-astern," hydraulic clutch 16, 17 and reduction gearing in a casing 13, and an hydraulic pump 40 adapted under control of a pilot valve 42 operated by the " ahead " " astern " controls of the ship to supply fluid through a selector valve 41 to either the " ahead " or " astern " clutch, the lines 45, 46 to the clutch passing through a valve 47 which in certain conditions isolates the clutch from the pump 40. An auxiliary motor 50, which may be an internal combustion engine or a reversible electric motor, is connected through a spring-opposed hydraulic clutch 51 with a shaft 55 turning with a shaft 22 of the reduction gear, the springs normally keeping the clutch disengaged. The auxiliary motor is started by moving a hand-lever 76 further movement of which actuates a control valve 71 to open a path for hydraulic fluid from the valve to the auxiliary clutch 51. The motor drives a pump 60 adapted to supply hydraulic fluid to a port 61 of a valve 62 in which a piston valve 63 is urged upwards by a spring 64 to open an outlet 68 through which the pump 60 delivers hydraulic fluid to an auxiliary clutch pressure line 70. When the auxiliary motor is started, and drives the pump 60, the hydraulic fluid delivered thereby to the port 61 is blocked, if the propeller is rotating at too high a speed, by a land 69 closing the outlet port 68, the land being so held by pressure in a chamber 65 above the piston valve 63, which communicates with the delivery side of a pump 66 driven by the propeller shaft 11. The pressure in this chamber falls with decreasing propeller shaft speed until the spring 64 lifts the valve 63 opening up the port 68 and auxiliary clutch pressure line 70 which leads into the end of the isolating valve 47 remote from a spring 81 which normally sets the valve piston 80 to permit free flow along the lines 45, 46, the pressure displacing the piston to block the lines whereupon the main clutch 16, 17 isolates the main engine 10. The port 68 communicates, with the chamber of the spring 64 to neutralise the pressure from the propeller pump in the chamber 65. The hydraulic fluid now traverses a channel 85 to the control valve 71 and auxiliary clutch 51. In a twin engine ship, lines 83, 84, 85 may connect with the second propulsion unit and make the arrangement responsive to that unit also.
Patent GB-1523176-A (GB)
Title: Productionn of olefins
IPC: C10L1/06
Filed: 1976-04-07
Abstract: 1523176 Olefins MOBIL OIL CORP 7 April 1976 [8 April 1975] 14104/76 Heading C5E Alcohols and/or ethers having no more than 4 carbon atoms per alkyl group are converted to olefins by contact at low severity with a catalyst comprising a crystalline aluminosilicate zeolite having a constraint index (defined) of 12-3000 and a crystal density in the dry hydrogen form not less than 1.54 g./c.c. The olefin product is aromatizable, by contact with the same zeolite, to give gasoline. Suitable zeolites are ZSM's 5, 11, 12 or 21. Examples describe the conversion of methanol and of dimethyl ether to mixtures containing ethylene and propylene.
Patent GB-109507-A (GB)
Title: Lubricated Hydraulic Plug Valve.
Inventor: NORDSTROM SVEN JOHAN
IPC: F16K5/22
Filed: 1916-10-05
Abstract: 109,507. Nordstrom, S. J. Oct. 5, 1916. Plug cocks.-A cock for corrosive liquids is provided below the seat with a lubricant chamber 14, radial channels 13 at the larger end of the plug extending down the plug surface, as 13<1>, a vertical feed passage 12, and a closing screw 11 which may be screwed down to compress the lubricant in the chamber 14 so as to lift the plug slightly and thereby break any possible binding by rust. A loose bearing member, preferably a ball 20, adjustable by means of a screw-plug 16, is arranged under the plug. A projection 21 from the cover 3 acts as a stop in a groove in the shank of the plug.
Patent GB-399438-A (GB)
Title: Improved apparatus for fixing pins, staples and the like in wooden bars and other articles
IPC: B25C5/16
Filed: 1933-05-16
Abstract: 399,438. Nailing or stapling. RENOUF, W. J., Bellis, St. Andrews, Guernsey. May 16, 1933, No. 14181. [Class 89 (iii).] An apparatus for driving pins or staples, for example into the ends of wooden bars, comprises a base 6 adapted to be bolted to a bench and having a side wall 15 against which a wooden bar may be held by an adjustable abutment 16a. A groove 9 in the base forms a magazine in which pins 8 are held side by side by a cover plate 10. The pins are fed by a push bar 17 and spring 18 up to a stop, so that the foremost pin is in line with a discharge passage 14 in the wall 15 and is in front of a horizontal driver 7. A spring-biassed sliding plate 25, which normally bridges the gap between the stop and the cover plate 10 to prevent the foremost pin from riding up, has a bevelled edge so that it is pushed aside as the driver makes its driving stroke. The driver is actuated by a lever 1, link 2, and treadle, and its rear end is biassed by a spring 21 so that its driving nose 7a remains in contact with the base 6. Specification 397,413, [Group XVII], is referred to.
Patent GB-726928-A (GB)
Title: Improvements in or relating to cold-cathode electric discharge devices
IPC: H01J17/00
Filed: 1952-06-05
Abstract: 726,928. Cold cathode tubes. GENERAL ELECTRIC CO., Ltd., and NEILL, T. R. June 5, 1953 [June 5, 1952], No. 14255/52. Class 39 (1) The striking delay of a cold cathode tube, having an unactivated cathode with a metal surface which has been cleaned by shuttering in manufacture of the tube, is reduced by providing radio-active material inside the tube. The cathode is made of a refractory metal having a melting point above 1,200‹ C., and a work function of less than 4.5, for example molybdenum, tantalum or zirconium. The radio-active material is preferably a natural radioactive material such as radium sulphate though aritificial radio-active materials may be used if they have a sufficiently long life. The tube shown comprises a glass envelope -t sealed to a glass base 2 through which pass five composite conductors arranged in a circle. Each conductor comprises a nickel rod 3 inside the envelope, a copper-clad nickel wire portion sealed in the base 2 and a nickel-iron chromium rod 4 outside the envelope adapted to act as a terminal pin. A molybdenum plate cathode 5 is welded to two of the rods 3.1 and 3,2, while rod 3.5 forms the anode. Rod 3.3 serves as a trigger electrode and rod 3.4 supports a nickel pellet 6 containing radium sulphate, and may also serve as a further trigger electrode. The pellet 6 is formed by cutting a small rectangular piece from a sheet consisting of a layer of radium sulphate sandwiched between two thin layers of nickel, the cutting being effected so that the cut edges of the nickel layers are cold-welded together and the radium sulphate thereby completely enclosed. The pellet is part cylindrical in shape and is spot welded to the rod 3.4 with its convex surface towards the cathode. During manufacture the surface of the cathode is cleaned by filling the tube with neon at a pressure of 10 mm. of mercury and sputtering the cathode material to form an opaque film on the inner surface of the envelope. To prevent short circuiting of the electrodes by this film, the lower end of each rod 3 is surrounded by a cylinder 8 of glass or ceramic material attached to the base 2 by glass cement or other adhesive. The sputtering process is continued for a further period after introducing the final filling of neon with 6 per cent. argon at a pressure of 40 mm. of mercury and sealing off. Specification 679,333 is referred to.
Patent GB-1218613-A (GB)
Title: Liquid cushioned back-up for high pressure wave forming
IPC: B21D26/06
Filed: 1968-03-25
Abstract: 1,218,613. Explosive forming; tube expanding. ATOMIC ENERGY OF CANADA Ltd. 25 March, 1968 [3 May, 1967], No. 14260/68. Headings B3J and B3Q. [Also in-Division F2]. A method of forming a metal workpiece against a surface by means of a high-pressure wave in a fluid comprises using a back-up member to support the surface and a layer of liquid between the back-up member and the die or other member, e.g. a pipe coupling, having the surface, the back-up member being so spaced from the die or other member that during the existance of the high pressure wave it receives and defleets impulses back to the die or other member. The high pressure wave may be formed electrically, electromagnetically or by an explosive detonated in air or water. If the explosive is in contact with the workpiece, the surrounding medium and gases produced by the explosion provide the transmission fluid. Cylindrical, non-circular closed of substantially closed sections, and flat workpieces may be formed. As applied to securing a zirconium-niobium alloy tube 14, Fig. 1, in a stainless-steel end-fitting 16, the fitting is surrounded by a back-up member 22 having a sealing ring 26 at each end of an annular chamber to which water is fed through passages 29. A temporary partition 28 supports a volume of water in which the charge 12 is exploded to join the tube to the fitting by expanding the tube-end. A member (not shown) may be provided between the explosive and thetube to be expanded as part of the joint. The partition 28 may have protuberances to position the charge. In another example, Fig. 3 (not shown), a ring of explosive (112) is used for contracting a pipe (114) on to a hollow fitting (116) containing a back-up plug (122). For forming flat workpieces (214), Fig. 5 (not shown), the die (216) is supported on a back-up plate (222) by an hydraulic cushion.
Patent GB-951448-A (GB)
Title: Control means for a number of fluid motors
IPC: F15B11/22
Filed: 1960-04-22
Abstract: 951,448. fluid-pressure servomotor systems; centrifugal governors. GARRETT CORPORATION. April 22,1960 [April 24,1959], No.14319/60. Headings G3B and G3P. Control means for a number of fluid motors comprises a conduit connected to each motor and containing a positive displacement fluid meter arranged to be driven by the fluid which passes through the motor, a positive coupling between the fluid meters whereby they operate in unison, and control means actuated by the coupled meters and arranged to vary the setting of valve means which controls the flow of fluid through the conduits. The two fluid motors 10 are controlled together by passing the individual flows thereof through a corresponding pair of nutating disc flow meters 42 the rotating elements of which are carried on a common shaft 43 which drives an adjustably spring loaded centrifugal governor 44 controlling, through a leak-off valve 38, the control pressure in a chamber 31 acting on an actuator 32 of a regulating valve 28, this valve controlling the flow through common inlet and outlet conduits 26, 2. to and from the motors. The conduits 26, 27 communicate through the regulating valve with corresponding supply and exhaust ports 16, 17 which are connected through a reversing valve 23 selectively with supply and exhaust conduits 21, 22 respectively. Control chamber 31 is supplied from the conduit 31 through a stop valve 36 and a restriction 37. Specifications 861, 952 and 881, 098 are referred to.
Patent GB-1137422-A (GB)
Title: Improvements in or relating to boxes for sockets, switches or the like electrical fittings
Inventor: BOYRD NORMAN
IPC: H02G3/18
Filed: 1966-04-01
Abstract: 1,137,422. Switch cases. EGATUBE Ltd. 27 April, 1967 [1 April, 1966], No. 14462/66. Heading H1N. A flush-mounting plastics wall box for a switch &c. (17) has the latter mounted on the box by screws, one 20 of which screws into a threaded insert 22, e.g. of nylon, plastics slideably mounted in a passage in a lug open at ends 18, and having walls 19, 21 moulded integrally with the box. An elongated slot 23 in base 10 coincident with a slot in wall 21 receives a boss 24 on insert 22. Stop ridges 25 are provided integrally with base 10. Standard lug 15 may be replaced by a second lug 19, 21 with insert 22.
Patent GB-141551-A (GB)
Title: Improved construction of steam boiler
IPC: F22B33/04
Filed: 1919-06-07
Abstract: 141,551. Bell, W. T., and Torn, C. June 7, 1919. Compound and composite boilers.-Comprises a boiler with cylindrical shell A with two flues B, C, through which the flue gases pass in series. The flue B has fire-bars D and grate, the other flue C has water-tubes E supported in plates F in ex. tensions G, H. The extension H is connected by a duct I with the flue B, the other extension G carries the chimney J. Water chambers K, L, a' the end of the extensions are coupled by pipes M, N respectively with the lower and upper part: respectively of the main section of the boiler.
Patent GB-239617-A (GB)
Title: Labyrinth stuffing box
IPC: F16J15/447
Filed: 1924-06-16
Abstract: 239,617. Reddie, L. N., (Kieswetter, J.). June 16, 1924. Stuffing-boxes &c.-In packing of the type comprising flexible baffle rings adapted to be deflected by the fluid pressure to reduce the clearance, the baffle rings are made of thin metal with radial or inclined slits. Preferably two or more rings x<3>, x<4> are superposed the slits being arranged to break joint. The ring x<3> nearer the high pressure is preferably thinner than the backing ring x<4>. The baffle ring may pack against a radial collar or against the shaft.
Patent GB-330106-A (GB)
Title: Method of releasing the pressure of mixtures of solids and liquids existing under high pressure
IPC: F15B1/02
Filed: 1929-05-09
Abstract: 330,106. Tate, W. R., Stephenson, H. P., Dean, H. P., and Imperial Chemical Industries, Ltd. May 9, 1929. Accumulators and intensifiers.-A method of releasing the pressure of mixtures of solids and liquids under high pressures, where.by the use of reducing 'valves which are subject to erosion is avoided, consists in transferring the potential energy of said mixture to a fluid whose energy can be released in any known manner without erosion. The mixture under high pressure is stored in a vessel 1 and passes through a pipe 2 and an inlet valve 3 to the cylinder 4 of a ram 5, the piston 6 of which acts also in the cylinder 11 of a second ram 10 of larger diameter than the first ram 5, and is reciprocated between the two rams according to the positions of the valves 3, 7, 12 and 13 which control the inlet and outlet of the main and auxiliary fluids. Auxiliary low pressure liquid is pumped, by means of a pump 18 through an accumulator 14, a pipe 15, and inlet valve 12 to the cylinder 11. The exhaust from the cylinder 4 passes through the valve 7 and pipe 8 to a low pressure storage vessel 9 for further use, and the exhaust from cylinder 11 passes through a valve 13, a regulating valve 17, a pipe 16, and an accumulator 19 to a point where its energy may be released in any known manner. In the position shown, valves 3, 13 are open and valves 7, 12 are closed, the cylinder 4 is charged with the high pressure mixture and the cylinder 11 is empty. Valves 3, 13 now close and valves 7, 12 open, low pressure fluid thus entering the cylinder 11 and forcing the piston 6 upwards to discharge the contents of the cylinder 4 at low pressure into the storage vessel 9. At the end of the stroke the valves 3, 13 open and valves 7, 12 close, the high pressure mixture forcing the auxiliary liquid out to the accumulator 19, the speed of operation of the apparatus being regulated by the valve 17, and the cycle of operations being repeated at the end of the stroke. The movements of the valves 3, 7. 12 and 13 are coordinated by means of an independent timing device not described.
Patent GB-1536838-A (GB)
Title: Track type vehicle wheel having controlled impact resistance
IPC: B62D55/096
Filed: 1977-04-06
Abstract: 1536838 Endless track vehicles CATERPILLAR TRACTOR CO 6 April 1977 [9 Aug 1976 (2)] 14570/77 Heading B7H A sprocket wheel 12 of an endless track vehicle comprises radially movable plungers 31 engageable with track bushings 15 and connected to an annular spring 28. The construction is intended to reduce noise caused in use by impact of the track bushings on the sprocket wheel.