baber/WOPTO huggingface dataset:
Patent GB-1125678-A (GB)
Title: Automatic volume control
IPC: H03G7/06
Filed: 1967-02-07
Abstract: 1,125,678. Automatic volume control. W. R. AIKEN. 7 Feb., 1967, No. 5824/67. Heading H4R. An automatic volume control arrangement 10 comprises a line 14 to which is applied an input such as a speech signal 42; a variable attenuator constituted by a fixed resistor 12 and a photo-sensitive resistor 16; an output line 20; a lamp 22 for illuminating the resistor 16; a power circuit for the lamp 22 including a transistor 24 which is regulated, in response to output variations, by a first control signal derived from the output line 20 by way of a potentiometer 30, a rectifier having a tansistor 32, and a line 33; and a circuit, including the series connection of a resistor 40 and a capacitor 40, from which is derived a second control signal of lesser value than the first, this second signal being held at the control transistor 24 for a predetermined duration upon decline of the said first control voltage. In operation, when the input signal increases suddenly the first control voltage likewise increases suddenly to cause transistor 24 to conduct strongly, whereby the brightness of the lamp rapidly increases and the output is attenuated; the control current surge also charges capacitor 36, but because of the presence of resistor 40, the capcitor voltage will not reach the magnitude of the first control voltage. After the output signal has dropped to its desired level, the initial surge of control current disappears, but the capacitor 36 then discharges and maintains a somewhat lower and gradually decreasing control voltage at the base of transistor 24 so that the flow of current through the lamp 22 is maintained for a limited time at the level required to hold the output within the desired limits, thereby preventing premature release of the control exercised on the input signal. A rheostat 26, is connected across the collector/emitter circuit of transistor 24 and is so adjusted that the lamp 22 is held on the threshold of illumination when no control signal is present on the base of the transistor.
Patent GB-1280964-A (GB)
Title: Cables
Inventor: ASH BERNARD EDWIN
IPC: H01B11/00
Filed: 1971-03-03
Abstract: 1280964 Cables STANDARD TELEPHONES & CABLES Ltd 3 March 1971 5887/71 Heading H1A An insulated pair of conductors, possibly of copper or aluminium, comprises two parallel conductors 1, 2 wrapped in a single strip 3 of insulating material, e.g. paper or plastics/paper laminate. The strip is rolled up as shown to form two tubular members in which the conductors are positioned, glue or other adhesive means being provided in spaces 4, 5 and on the portions of the strip around the conductors. The portion of the strip between the tubular members may be partially weakened along its length to facilitate separation of the conductors.
Patent GB-647016-A (GB)
Title: Improvements in or relating to load-carrying vehicles
IPC: B60D1/02
Filed: 1948-02-27
Abstract: 647,016. Vehicle draw-bars. JONES, Ltd., W., and FERGUSON, T. M. Feb. 27, 1948, No. 6112. [Class 103(v)] A drawbar for use with barrows having running wheels associated with a chassis frame carrying the body comprises a manually operated catch device arranged upon the drawbar to permit the same to be readily attached to or detached from the chassis frame the catch device being positioned in relation to the drawbar in such a manner that each end of the drawbar is available for attachment to the end of another similar drawbar or to a power tractor, whereby a train of the barrows may be made up for moving the barrows under power. In the embodiment shown a drawbar 11 is detachably mounted on the underframe members 7, 8 of a twowheeled barrow 5 and projects at each end thereof. The members 7 and 8 are engaged respectively by a fixed finger 12 and a finger 13 mounted on a member 14 which is slidable by means of a handle 17, against the action of a spring 15, for attaching the drawbar. In a modification (Fig. 5, not shown), the forward end of the drawbar is formed as an open frame through which the barrow contents may be discharged. Specification 475,161 is referred to.
Patent GB-415766-A (GB)
Title: Improvements in or relating to the separation of olefines
IPC: C07C7/11
Filed: 1933-03-01
Abstract: In the selective absorption of olefines from mixtures thereof by means of acids such as sulphuric, phosphoric or sulphonic acids, the higher olefine being absorbed in acid of lower strength, water is added to the acid in which the higher olefine is absorbed (or water vapour is added to or is initially present in the gas mixture) so as to maintain the acid of lower strength at such strength that only the higher olefine is absorbed; or, if cooling is desired, the water may be added in the form of ice. When a mixture of propylene and ethylene is to be treated, the propylene may be absorbed in sulphuric acid of less than 92--93 per cent, preferably 70--90 per cent at 15--25 DEG C., and pressure may be employed such as 10--30 atmospheres.  The olefine gas mixture may be first treated so as to remove olefines higher than propylene, and excess water vapour, for instance by treating with sulphuric acid of 60--70 per cent.  The acid absorption product may be hydrolyzed to yield alcohol or ether.  The invention may be applied to the pretreatment stage, water being added to the acid to maintain it at the requisite strength and prevent the absorption of propylene at that stage.
Patent GB-955438-A (GB)
Title: Centrifugal pump
IPC: F04D29/44
Filed: 1962-02-19
Abstract: 955,438. Stuffing-box substitutes. SUNDSTRAND INTERNATIONAL CORPORATION Ltd. Feb. 19, 1962 [Feb. 20, 1961], No. 6262/62. Heading F2B. [Also in Division F1] In a centrifugal pump (see Division F1) for fluids such as oil or water and which may be used in an aircraft, each impeller vane such as 23, 24 has a radial stiffener such as 30, 31 and the spaces between adjacent stiffeners ensure that any fluid leaking along the drive shaft 15 is not at the pump discharge pressure. A dynamic seal 35 provided with sealing vanes 54 at one side has a smooth face at the other so as to impart relatively little pressure to the leakage fluid. Passages 51 provide paths for the return of leakage fluid. When the impeller 21 is stationary or is rotating a low speed, fluid leaking past the vanes 54 passes through a restriction between a member 12 and the seal 35 and sprays on to a slinger disc 38 and is deflected thereby towards drain holes, one of which is shown at 53.
Patent GB-316539-A (GB)
Title: Improvements in and relating to telescopic gasometers
IPC: F17B1/04
Filed: 1929-02-26
Abstract: 316,539. Maschinenfabrik Augsburg- N³rnberg Akt-Ges. July 30, 1928, [Convention date]. Addition to 301,016. Holders. - In the telescopic gas holders of the parent Specification the lubricating and sealing material is supplied from reservoirs s, t through flexible tubes o, p to the sealing spaces q, r by pumps m, n mounted on a scaffolding l. The tubes o, p are disconnected after the filling operation and the filling openings are closed by stoppers. In another arrangement one or more pumps are mounted on the gas bolder cover and are connected to the various sealing spaces through valve - controlled flexible tubes.
Patent GB-1107954-A (GB)
Title: Polonium recovery
IPC: G21G4/04
Filed: 1966-02-14
Abstract: 1,107,954. Concentrating polonium. UNITED STATES ATOMIC ENERGY COMMISSION. 14 Feb., 1966 [26 March, 1965], No. 6357/66. Heading G6R. Polonium is recovered from neutron-irradiated bismuth by melting the bismuth with metallic cerium and separating cerium bismuthide which floats on the surface and carries the polonium. The process may be carried out in a glass bulb comprising a long narrow column where the product is allowed to solidify and then separated into pieces. Alternatively, separation may be carried out centrifugally while cooling, or by zone refining or filtering through a steel filter at just above the melting point of bismuth.
Patent GB-663575-A (GB)
Title: An improved process for the development of light-sensitive diazotype layers
IPC: G03C1/58
Filed: 1949-03-08
Abstract: 663,575. Photographic diazotype process. SPOLEK PRO CHEMICKOU A HUTNI VYROBU NARODNI PODNIK. March 8, 1949, No. 6358/49. Class 98 (ii). An exposed light-sensitive diazotype layer, which may be sensitized with dimethylaminobenzene-4-diazonium chloride or with the zinc chloride or stannous chloride double salt thereof, is developed with a developer containing a mixture of phloroglucinol or resorcinol and α-naphthol. In an example, paper is coated with an aqueous solution of dimethylaminobenzene-4-diazonium chloride or the stannous chloride double salt thereof, oxalic acid, and thiourea, and after drying and exposure is developed with an aqueous solution of phloroglucinol (or resorcinol), α-naphthol, sodium thiosulphate, and sodium carbonate.
Patent GB-578488-A (GB)
Title: Improvements in or relating to record-card controlled machines
IPC: G06K13/063
Filed: 1944-04-05
Abstract: 578,488. Feeding sheets. BRITISH TABULATING MACHINE CO., Ltd. April 5, 1944, No. 6399. Convention date, April 9, 1943. [Class 100 (i)] [Also in Group XIX] A record card controlled machine having feed rolls for feeding cards one by one to a mechanism with which the cards are to be in register, comprises means for shifting the feed rolls transversely of the direction of feed to bring each card into the path in which it is in register with the mechanism, and means operable by the card to stop the shifting means when it is in register. A cam 35, driven from the feed rolls 19, lifts a follower 36, together with a slide 22 which carries a cam block 26 having an inclined cam groove 26a (Fig. 8) in which rides a roller 27 (not shown) secured to the feed roller shaft. Thus, as the slide 22 descends, it moves feed rollers 19 transversely, effecting a small lateral movement of the card. When the card 13 (Fig. 5) reaches the imaginary datum line B, it engages a lever 49, closing contacts PC and energizing an electromagnet SCM (Fig. 1) which pulls a spring-held pawl 39 into engagement with a rack 43 secured to the slide 22, thus arresting the downward movement and so preventing any further lateral movement of the card. A second contact SC (Fig. 5) closes to energize the magnet SCM in case of failure of contact PC. The invention is described as applied to the reproducing punch of Specification 442,534, [Group VIII].
Patent GB-777619-A (GB)
Title: An improved pit prop
IPC: E21D15/38
Filed: 1955-03-04
Abstract: 777,619. Pit props. PROGRESS CHARBONNIER PROCHAR SOC. COOPERATIVE. March 4, 1955 [March 6, 1954], No. 6483/55. Class 20(2) A telescopic pit prop  comprises an outer member 1 whose upper end carries a lock 9, and an inner member formed in two parts, 3, 4 which are freely connected at their upper ends to a head 16 and are arranged to be forced apart to grip the lock 9 by means of at least two superposed wedges, 10, 11 driven between the parts, 3, 4 through apertures 12, 13 in the lock. The head 16 comprises two lobes 17, 18 each bearing respectively on one of the parts 3, 4 and a rib 19 having a hole 20 through which a pin 21 extends with some clearance, which pin is itself assembled with some clearance to the parts 3 and 4, this arrangement permitting a degree of independence in the sliding movement of the parts 3 and 4 when the prop is under load. The head 16 has lugs 23 which prevent slipping of a girder 24 supported by the head.
Patent GB-1535232-A (GB)
Title: Aromatic hydrocarbon isomer separation process
IPC: B01J20/18
Filed: 1976-02-19
Abstract: 1535232 Zeolite adsorbent UOP Inc 19 Feb 1976 [27 March 1975] 06540/76 Heading C1A [Also in Division C5] A zeolite adsorbent for separating alkylaromatics is prepared by:- contacting a base material comprising Y zeolite with an aqueous sodium hydroxide solution at first ion exchange conditions to effect the addition of sodium cations to said base material; treating the sodium-exchanged base material at second ion exchange conditions to effect essentially complete exchange of the sodium cations with one or more cations selected from potassium, cesium and rubidium; and drying the so-exchanged material to reduce the LOI (loss on ignition) at 900‹ C. to less than 10 weight per cent.
Patent GB-932625-A (GB)
Title: Improvements relating to tufting machines
Inventor: ELLISON RONALD
IPC: D05C15/32
Filed: 1961-02-23
Abstract: 932,625. Tufting machines. SINGERCOBBLE Ltd. May 22, 1962 [Feb. 23, 1961], No. 6629/61. Class 112. Tufted fabrics are made by selectively raising the looper hooks to higher positions for forming shorter loops, in accordance with a desired pattern. The embodiments show arrangements for producing cut pile. In Fig. 1, each looper hook 3 is pivoted to a looper bar 1 about a horizontal pin 2, and is normally held against bar 1 by a tension-spring 7. In Fig. 2, each looper hook 11 is vertically slidable in a slot provided in the looper bar 12, and is biased to the lowered position by a leaf-spring 13. By increasing the tension of the yarn 8 sufficiently to overcome the springs 7, 13, the respective loopers 3, 11 may be selectively raised for producing shorter tufts. In Fig. 3, the lifting of a looper 16 is positively determined by the angular position of a cam 17 adapted to oscillate a lever 18 for lifting a pin 19 against the bias of a spring 20, to raise the looper holder 21. The latter is also provided with guide pins 22.
Patent GB-539338-A (GB)
Title: Improvements in guards or protectors for babies in perambulators or the like
IPC: B62B9/24
Filed: 1940-04-13
Abstract: 539,338. Safety enclosures for babies. ANDREWS, M. B. April 13, 1940, No. 6720. Drawings to Specification. [Class 52 (i) ] A safety enclosure for protecting babies from dogs, cats and the like and also against weather conditions when lying in the open in perambulators comprises a skeleton structure for supporting wire netting or the like, and forming the ends and sides (and preferably also the top) and a door which forms one end of the structure. The ends and sides (and also the top when used) may be detachably or foldably connected together. A waterproof covering sheet or sheets may be detachably fixed to the top, ends or sides of the structure.
Patent GB-580059-A (GB)
Title: Improvements in or relating to pitot tubes
IPC: G01P5/16
Filed: 1944-04-12
Abstract: 580,059. Fluid - velocity meters. THORP, H. W. April 12, 1944, No. 6746. [Class 69 (i)] For measuring fluid velocities in large conduits, such as flues or chimneys, by a Pitottube including both dynamic and static tubes, a relatively long extension pipe extends through the wall of the conduit and to the inner end thereof a relatively short Pitot-tube' is detachably secured as by a screw or bayonet joint, leads within the extension pipe extending from the static and dynamic tubes of the Pitot-tube to a measuring device outside the conduit. The Pitot-tube comprises L-shaped dynamic and static tubes 1, 2, and a nose-piece 3 threaded to the tube 1, the outer end of the tube 2 being brazed, welded or otherwise attached to a plug 5 with a threaded part 6 for connection to the extension pipe ; the plug 5 is closed by a member 7 through which pass the tube 1 and a tube 8 which carry unions 9, 10 for connection to flexible &c. copper pipes loading to a manometer.
Patent GB-711773-A (GB)
Title: Improvements in or relating to waste heat plants
Inventor: FOUNTAIN HOWARD JOHN
IPC: F01N5/00
Filed: 1950-03-17
Abstract: 711,773. Generating combustion products under pressure. CLARKSON THIMBLE TUBE BOILER CO., Ltd. March 16, 1951 [March 17, 1950], No. 6757/50. Class 51 (1). [Also in Group XIII] Part of the oxygen-containing gases discharged from an internal combustion engine, other than a Diesel engine of the kind defined in Specification 654,920, [Group XIII], flows through a combustion chamber at relatively low velocity, and is heated by the combustion therein of fuel supplied to the chamber, the heated part of the gases being utilized in a water heater and/or steam boiler. In the form shown, the combustion chamber 1 is mounted in an L-shaped part 3 of a Diesel engine exhaust pipe, and is formed by a refractory cylindrical wall 31 fitted in a sheet metal cylinder 27 welded to a removable plate 21 which carries an oil or gas burner 57 and an igniter 59. Ports 39a for the entry of part of the exhaust gases into the combustion chamber are controlled by a longitudinally slidable strip 47 having elongated holes 43 which taper in one direction. The Provisional Specification states that the wall 31 has one or more internal projections which become incandescent, and describes a modification in which the combustion chamber is outside and parallel to part of the exhaust gas duct, and is connected to it by branches. Valves may be provided at the inlet and outlet.
Patent GB-291174-A (GB)
Title: An improved colorimeter
IPC: G01N21/78
Filed: 1927-03-11
Abstract: 291,174. Rees, R. L. March 11, 1927. Mixing fluids in flow.-Liquid is automatically delivered by a siphon from a mixing vessel to a colorimeter to be inspected therein, the variation of pressure in the mixing-vessel causing the movement of a mercury seal so as to entrap a measured volume of indicator and deliver it to the mixing vessel. The indicator is contained in a vessel 1 through the stopper of a tube 2 extends into the liquid. A tube 7 extends from the vessel 1 into one arm 9 of the mercury seal. A tube 5 extends from the chamber 9 to a point 4 within the mixing vessel 6, and a tube 12 from the other arm 11 of the mercury seal to the base of the vessel. The liquid to be tested passes into the vessel 6 till its level is high enough to cause the siphon 17 to function and draw off liquid into the colorimeter 18. At the same time as the liquid level rises, the mercury in the chamber 9 rises till it closes the outlet 13 of the tube 7 and afterwards forces the indicator liquid contained in the chamber 9 through the tube 5 into the mixing vessel.
Patent GB-434594-A (GB)
Title: Improvements in and relating to swinging-tray conveyors
IPC: A21B1/46
Filed: 1934-03-05
Abstract: 434,594. Endless chain conveyers. BAKER PERKINS, Ltd., Westwood Works, Peterborough. March 5, 1934, No. 6917. Convention date, April 20, 1933. [Class 78 (i)] In conveyers of the type wherein trays 5 are pivotally suspended between two parallel chains 2 each of which has tray supporting pintles or rollers 4 spaced apart from one another by a plurality of links, each end sprocket wheel 7 has a plurality of pintle pockets 8 spaced apart by chain - engaging portions adapted to cause the chain between a pair of pockets to assume a path 9 which is shorter than the corresponding path along the pitch circle of the pockets.
Patent GB-873077-A (GB)
Title: Manipulating devices having master and slave portions for the remote handling of objects
Inventor: STEPHENSON PATRICK HAY
IPC: B25J3/00
Filed: 1958-03-04
Abstract: 873,077. Handling radioactive materials. PYE Ltd. March 4, 1959 [March 4, 1958; Feb. 2, 1959], Nos. 6936/58 and 3634/59. Class 39(4). A manipulator having a master arm 1 controlling a slave arm 2 positioned the other side of a shield 4 has means whereby the arms, 1, 2 may be moved relatively to each other in a plane parallel to the shield so that an operator may remain in front of a window in the shield when handling objects which are displaced to one side of the window. As shown, the master arm 1 is pivoted at 1a to brackets 7 attached to a housing 11 rotatable about a through-tube 3, the housing and through-tube being connected by an actuator 12 so that normally they rotate together about the. tube axis in response to turning of the arm 1. The arm 2 is pivoted at 2a to the tube 3 and is moved in a direction away from the shield 4 by a link 5 operated by an actuator 8 through a bell-crank lever 6 pivoted to the brackets 7. The actuator 8 is controlled by arm 1 through a link 10 connected to a lever 9 pivoted to the brackets 7 whereby the actuator produces movement of the arm 2 in dependence upon movement of the arm 1. The lower portions of the arms 1, 2 are not shown but they include, respectively, hand controls and tongs of known construction. In order to move the arm 2 laterally relatively to the arm 1 the latter is held stationary and the actuator 12 set in motion whereby the tube 3 and arm 2 are rotated. The arm 2 is counterbalanced by a weight 18 carried by a lever 23 pivoted at 22 to the tube 3, a lever 15 pivoted to ears 16 on the tube 3 and links 14, 17 serving to connect the arm 2 with the lever 23. A further weight 20 is carried by the tube 3 and the arm 1 is balanced by a weight 21.
Patent GB-349639-A (GB)
Title: Improvements in or relating to drying or conditioning racks
IPC: F26B25/18
Filed: 1930-03-03
Abstract: 349,639. Withering tea; racks. MAIN, J. A., Clydesdale Ironworks, Possilpark, Glasgow. March 3, 1930, No. 6941. [Class 34 (ii).] Racks for withering tea &c. comprise permeable shelves or trays 10 pivoted at their rear ends on links 11 or the like and movable backwards and forwards so that their front edges can be placed on different notches 12, thus providing a lower position A for spreading, after which each shelf is raised to the upper, drying, position B. The trays, which are provided with distance pieces 15, are discharged, commencing with the bottom one, by allowing them to hang down as at C. The racks may be movable into a drying chamber as in Specification 336,619, [Class 34 (ii), Drying systems &c.], the floor level 14 outside the chamber being below that of the chamber, to facilitate discharging.
Patent GB-606327-A (GB)
Title: Improvements in or relating to electron discharge devices
IPC: H01J23/213
Filed: 1946-03-06
Abstract: 606,327. Electron discharge apparatus. RAYTHEON MANUFACTURING CO. March 6, 1946, No. 6974. Convention date, March 20, 1945. [Class 39 (i)] A tunable electron discharge device comprises at least two anode members constituting a resonant line and a conducting section movable so that the values of the distributed capacitance and inductance of the resonant line are altered in the same direction. As applied to a magnetron, the anode structure comprises a cylindrical-body 15, a plurality, i.e. 8 or 16, of radially disposed anode members 16, each with a conducting vane 17 supported in the slot 18 of a conducting arm 19, the outer end of which is secured to the body 15. Slot 20 and shoulders 21 formed at the bottom end of each vane 17 are contacted by circular conducting straps 22, 23 so that alternate vanes are at the same instantaneous potential. The emissive cathode 12 is fitted into an elongated tubular member 31 and is insulating supported by bushings 42, 44 joined by a glass tube 43 on the polepiece 45 of the magnet. Both polepieces 45, 47 are hermetically sealed into the end plates 24, 25 of the anode structure. A loop 49 extracts power from the device. Tuning of the magnetron is accomplished by a plurality of conducting electrically-connected segments 57 overlying the anode members 16 and disposed in a plane parallel to the sectors 19. These segments are attached to a cylindrical member 53 and a shaft 58, the upper end of the latter being keyed to a disc 59. The disc is rotatable on ball bearing races 61, 62, 63 by means of a worm gear 74 and pinion, a pin-and-slot connection limiting the amount of rotation. The device is maintained air-tight by providing a flexible metallic member 78 hermetically sealed by flanges 79 and 80 to the cylindrical member 53 and the upper plate 70 of the disc support. In any movement of the segment 57 towards a position intermediate the anode members 19, the capacitance value is decreasing as is also the value of the inductance of the resonant line compressed by each two anode members.