baber/WOPTO huggingface dataset:
Patent GB-939533-A (GB)
Title: Circuit for unbalance detection apparatus
Inventor: HOSKING PAUL CARPENTER
IPC: H05B41/34
Filed: 1960-06-14
Abstract: 939,533. Indicating rotary unbalance. STEWART - WARNER CORPORATION. June 14, 1960, No. 20927/60. Class 40 (1). [Also in Group XX] Spurious flashes from a stroboscopic lamp indicating the position of unbalance of a rotating body are avoided by supplying the lamp from a supply which, after a first operation of the lamp, is not immediately available for a second. As described, the wheel of a vehicle is raised off the ground and rotated to a speed above its natural resonant frequency. The wheel then freely decelerates and a stroboscopic lamp operated in synchronism with the wheel may be used to indicate the position of rotary unbalance which, at resonance leads the deflection by 90 degrees. As shown, the stroboscopic lamp 15 is controlled from an unbalance detector 13 of the type described in U.S.A. Specification 2,383,405. The detector consists of a magnet reciprocating relatively to a fixed coil to induce a voltage which passes through its peaks when the unbalance position is aligned with the magnet axis. The negative half-cycles of the detector output are selected by the diodeconnected left-hand side of a double triode. The signal developed at the diode load 6 is passed to the right-hand side of the triode through a resistance capacity combination 8, 9 which operates so that only a very narrow part each side of the maximum of the negative half-cycle passes to the next stage. The signal developed across the anode load 10 of diode 5 is fed through differentiating circuit 12, 13 to produce a very high spiked pulse at the grid of thyratron 14. The plate supply to the thyratron is determined from a voltage doubling circuit consisting of condenser 38, resistors 36, 37 and rectifiers 34, 35, feeding a supply condenser 21. This supply charges condenser 20 and feeds the plates of the stroboscopic discharge tube 15. When the spiked pulse triggers the thyratron it fires and its plate voltage falls. Condenser 20 discharges through the thyratron by way of the primary of pulse transformer 22, 24. The pulse developed in the secondary ionizes the gas in discharge tube 15 so that condenser 21 discharges through it, giving a brilliant flash. Because of the time required by the voltage doubling circuit to build up the voltage on condenser 21, tube 5 cannot fire at an undesired high frequency.
Patent GB-483989-A (GB)
Title: Manufacture of butadiene
IPC: C07C1/213
Filed: 1936-07-28
Abstract: Butadiene is produced by heating a mono-or diester of 2-3 butylene glycol with a monocarboxylic acid, which may be aliphatic or aromatic.  Suitable acids are formic, acetic, propionic, butyric, isobutyric, benzoic, and o- and p-toluic acids.  Suitable esters are the mono-ester of acetic acid, and the di-esters of formic, acetic, propionic, and benzoic acids.  The process may be effected by passing the vapour of the ester, with or without a diluent such as nitrogen or benzene through a heated tube which may be packed with quartz, earthenware rings, steel shavings, silica gel or active carbon.  The temperature may be 475-600 DEG  C.  It is thought that the junction is effected in two stages, the first being the conversion of a diester to an a -methyl allyl ester and that the second stage does not readily take place below 475 DEG  C.  The glycol diacetate may be made by heating 2-3 butylene glycol with acetic acid, sulphuric acid, and benzene, the benzene being added to carry off the water during the process.  In examples (1) 2-3 butylene glycol diacetate vapour is passed through a quartz tube packed with quartz pieces at 550 DEG C.; (2) the diacetate is fed by gravity into vertical glass tubes packed with earthenware rings or stainless steel turnings at 510-515 DEG  C.; (3) a reaction mixture made from the glycol, acetic and sulphuric acids and benzene, is fed by gravity through heated glass tubes; (4) 2-3 butylene glycol diformate vapour is passed through quartz tubes packed with quartz chips at 550 DEG  C. Reference is made to the production of 2-3 butylene glycol by fermentation as described in Specification 315,263, [Class 2 (iii)].
Patent GB-1299372-A (GB)
Title: Liquid fuel injection nozzles
Inventor: MOWBRAY DORIAN FARRAR
IPC: F02M61/10
Filed: 1969-04-24
Abstract: 1299372 Fuel injectors CAV Ltd 7 April 1970 [24 April 1969] 21010/69 Heading F1B The axis of the spring bore 15 is offset from the axis of the cylindrical nozzle body 10 to provide the necessary wall thickness surrounding the fuel supply drilling 19 with minimum nozzle body diameter.
Patent GB-992270-A (GB)
Title: Radiation beam chopping system
IPC: G01J1/36
Filed: 1962-05-31
Abstract: 992, 270. Photo-electric spectrometers. PERKIN-ELMER CORPORATION. May 31, 1962 [July 24, 1961], No. 21032/62. Heading G1A. The Specification deals broadly with a light beam chopping arrangement wherein a.reciprocating opaque member passes right through the light beam on each stroke so as to chop the light beam at twice the frequency of the chopping of any incident ambient radiation. The arrangement is particularly described as applied to an infra-red spectrometer as described in Specification 786,979, wherein the rotating disc interruptor 39 shown in the said Specification is replaced by the present arrangement, comprising Fig. 1 an L-shaped vane 12, pivoted at 14 and cammed at 16 to oscillate a shutter part 10, past and through the light beam 22. By this means the spectrometer is able to distinguish between signals due to the chopped light beam and those due to chopped ambient radiation.
Patent GB-1111267-A (GB)
Title: Improvements in or relating to fluid amplifiers
Inventor: SENSTAD PAUL D
IPC: G01P3/26
Filed: 1965-05-18
Abstract: 1,111,267. Measuring angular velocity electrically. HONEYWELL Inc. May 18, 1965, No. 21093/65. Heading G1N. [Also in Division G3] An angular velocity sensor comprises annular perforated plates 21, 22 having glass balls 23 between them, arranged between discs 11 and 14 to form circular chambers 20, 30 having outlets 41, 52 which may be located on the axis 24 of the chamber, and inlet 33 for an electrically conductive fluid. Radial current flow through the fluid is produced by battery 70 connected to electrode 34 rigidly attached to the external wall 31, and an electrode 45 in the outlet 41. When the sensor is subjected to rotation about axis 24, the fluid is given a rotational velocity and thus varies the pressure difference measured by a pick-off 60. Piston 81 then adjusts a resistor 82 to vary the current in coil 36 surrounding the sensor assembly and thus produce a magnetic field which acts on the fluid to balance the vorticity and the current in coil 36 is indicative of the angular velocity of the sensor. The electrical arrangement may be provided in alternative manners as in Figs. 3 and 4 (not shown).
Patent GB-339590-A (GB)
Title: Improvements in receptacles for dispensing powders, granulated material and the like
IPC: A47G19/34
Filed: 1929-07-09
Abstract: 339,590. Jackson, L. Mellersh-, (Baker, H. L.). July 9,1929. Stoppers with valves.-A receptacle 15 for dispersing comminuted material has a discharge throat 19 with a restricted thin-edged discharge orifice 18 and a plunger or stopper 20 adapted to reciprocate in the throat and having a surface 24 capable of supporting small quantities of the material when the receptacle is in the upright position, the material being discharged when the receptacle is turned upside down and the plunger moves to the orifice 18. The plunger has an inner portion 22 and a cone-shaped and outer portion 23 which, as shown, are detachably and adjustably connected together so that they may be assembled within the cap 17 of the receptacle; the sharp edge 27 and the pointed end 29 of the portion 22 serve to break up any lumps formed in the material. The plunger may be made in one piece in which case the top of the cap of the receptacle is formed with yielding sections to permit the plunger to be seated therein. The cap may be formed with a flared mouth leading from the discharge orifice, the throat may have a spiral groove to retain damp material and the edge 27 of the inner portion of the plunger may be serrated or notched. The discharge throat may be arranged in the neck of the receptacle and the discharge orifice in a removable cap, the plunder being inserted in the cap and the edge of the orifice being spun over to retain the plunger therein.
Patent GB-810341-A (GB)
Title: Improvements in and relating to fastening devices for attaching an article to an apertured support
IPC: B25B27/00
Filed: 1957-07-04
Abstract: 810,341. Blind riveting. UNITED-CARR FASTENER CORPORATION. July 4, 1957 [July 23, 1956], No. 21201/57. Class 83 (4). [Also in Group XXV] A device 10, Fig. 3, for fastening an article, e.g. a trim-moulding, to an apertured support comprises a base 16 with an opening 22, across which depends a web 24 projecting from the base and deformable by a tool to secure the device to the support. The part 28 of the web is flattened by the tool 40, Fig. 5, having parts 36 to engage under lips 32 formed from the base. The device has stiffening-flanges 20 and parts 18 to engage the moulding &c.
Patent GB-945157-A (GB)
Title: Improvements in or relating to processes for the production of steroid compounds and the compounds thus produced
IPC: C07J7/00
Filed: 1960-06-16
Abstract: The invention comprises 12-methylene-pregn-4-en-3,20-dione, 3,20-bisethylenedioxy - 12 - methylene - pregn - 5- ene, 3 - ethylenedioxy - 12 - methylene - pregn - 5 - en - 20 - one and processes for the preparation of 12-methylenepregna-3,20-dione compounds by reacting a pregna-3,12,20-trione or a derivative thereof having an unprotected 12-keto group with a Grignard reagent to form the corresponding 12 #x-hydroxy -12 #x-methyl-derivative and dehydrating the latter to form the desired compound. Keto groups other than in 12-position may be protected for example by conversion to ethylenedioxy groups and may be regenerated either before or after dehydration of the 12-hydroxy - 12 - methyl derivative.  The starting 3,20-bisethylenedioxy-pregn -5-en -12-one may be obtained by ketalising 12-hydroxyprogesterone with ethylene glycol and oxidising the 12-hydroxy substituent.  Specification 945,158 is referred to.
Patent GB-1167372-A (GB)
Title: Riveting Machines
Inventor: CALVERT ERIC
IPC: F16P3/00
Filed: 1966-05-13
Abstract: 1,167,372. Riveting. JOSEPH LUCAS (INDUSTRIES) Ltd. 8 May, 1967 [13 May, 1966], No. 21276/66. Heading B3U. [Also in Division F2] A riveting machine comprises a die 13 and punch 17, a rivet carrier 23 which is movable to a position adjacent the die to act as a guard and means to move the die and punch relatively to each other only when the carrier is adjacent the die. The carrier is mounted on a slide 22 which is allowed to fall under gravity when one arm of a bell-crank lever 28 is removed from under a projection 29 on the slide. As the slide descends a micro-switch 41 is closed by a striker 42 to energize a solenoid 31 admitting fluid to a cylinder 21 causing a clutch to engage. The clutch brings drive to a crank-shaft 20 causing the punch to descend. An arm 32 on the bellcrank lever abuts a cam 33 to prevent operation of the punch when the bell-crank lever has not released the carrier slide 22. After the deformation of the rivet the carrier 23 is moved upwards by a fluid cylinder 25.
Patent GB-353239-A (GB)
Title: Improvements relating to hatch covers for ships
IPC: B63B19/14
Filed: 1930-07-14
Abstract: 353,239. Hatches. FLEURET, F. W., 41, Farnham Terrace, Sunderland. July 14, 1930, No. 21315. [Class 113 (i).] The hatch sections a are bound with angles b at the ends which are provided with key hole or other slots c which are engaged with studs c on the coamings or rest bars so that by giving the sections a lateral movement after positioning they are locked in position. In addition the coamings and rest bars are provided with short-spaced angle studs p beneath which the sections are pushed into position. In a further modification, the sections are provided at their angles with recesses which engage with studs projecting from the face of the coamings n. The sections are finally locked by a central locking-bar taking over the longitudinal edges of the central sections.
Patent GB-315323-A (GB)
Title: Improvements in or relating to control systems for elevators, hoists and the like
IPC: B66B1/50
Filed: 1929-07-11
Abstract: 315,323. Associated Electrical Industries, Ltd., (Assignees of Mattingly, H. W.). July 11, 1928, [Convention date]. Selenium cells.-In an electrical control system for lifts of the kind in which a light source and a co-operating light-sensitive device, such as a photo-electric cell, are arranged so that the effect of the light source on the cell is' changed at a predetermined stage in the travel of the lift to effect the operation of apparatus for controlling the movement of the lift, the light-sensitive cell and the light source are mounted on the lift or in the well, and screening means mounted in the well or on the lift, respectively, is arranged to intercept light rays between the light source and the light-sensitive cell at the predetermined stage in the travel of the lift. Fig. 3 shows a preferred form of a light-sensitive control device used to modify the speed of a lift between floors. This device is mounted on the lift and comprises a casing 122 the front of which is provided with walls 126 - - 129 extending into the casing and parallel with its sides. The inner ends of the walls 126, 127 and 128, 129 are connected by walls 130, 131, respectively, and the outer ends of the walls 127, 128 may be joined by a wall 132. Selenium cells 80, 81 are placed between the walls' 125, 129 and 124, 126, respectively, and the light 79 and reflector 133 are mounted adjacent the back wall 123. Mirrors 134, 135 reflect the beam of light through openings 136, 137 on to the cells. Screens 84 &c. mounted in the well are arranged to pass between the walls 126, 127 and 128, 129 to intercept the beams of light. Each cell 80, 81 comprises a series of plates 141, 142, 143, &c., Fig. 6. The front edges of the plates are connected by a coating 146 of light-sensitive metal, e.g. selenium. Adjacent plates are separated by strips of insulating material. When it is desired to stop the lift level with the floor within the close limits necessary in passenger lift systems, a number of control devices 147, Fig. 7, are used. The casing 148 has compartments 149, 150, 151 separated by partitions 152, 153. A lamp 154 in the compartment 150 is partially surrounded by a reflector 155 which projects a beam of light on to mirrors 134, 135. Photo-glow tubes 156, 157 having photo-sensitive cathodes 166 and anodes 167 are mounted in the compartments 149, 151. The beams of light reflected from the mirrors 134, 135 pass through narrow slots 158, 161 on to mirrors 160, 163 which direct them on to the tubes 157, 156. A series of casings 147 is mounted on the cage, and a number of screens are mounted in the well adjacent to the floors and in spaced relation to each other for de-energizing the cells in a predetermined sequence whereby the control system is caused to function in such a manner that the cage is retarded in steps and brought to rest level with a floor.
Patent GB-742555-A (GB)
Title: Improvements in or relating to rotary joints for pipes
Inventor: JUDD WILLIAM FRANK
IPC: F16L27/08
Filed: 1953-08-04
Abstract: 742,555. Pipe joints. EMCO BRASS MANUFACTURING CO., Ltd. July 22, 1954 [Aug. 4, 1953], No. 21507/53. Class 99(1). In a rotary pipe joint comprising two tubular elements 3, 4, having abutting flanges 13, 14, nuts 12a and studs 12 for holding together the flanges, a tubular member' 5 secured to one pipe 2 and journalled in the element 4, for example, whilst the element 3 is fixed to the other pipe 1, the member 5 terminating within the bore of the element 4, and sealing means 15 disposed between the element 3 and the member 5, the studs are of such length as to enable the elements 3 and 4 to be sufficiently separated to permit removal and replacement of the sealing means without complete separation of the elements. The pipes 1 and 2 are welded to the element 3 and member 5, respectively, the member 5 being journalled in the element 4 by ball bearings 6, 7 and having an opening 8 through which the latter are inserted or removed, the opening being normally closed by a castellated-threaded plug 9 locked by a split pin ; the plug carries a grease nipple 10. Oil seals 11 and 17 are disposed between the element 4 and the elements 3 and member 5, respectively. The sealing means 15 comprises a rubber packing-seal 15a between a packing ring 15b and a seal ring 15c, and the member 5 has a central boss 16 to deform the seal assembly ; the surfaces against which the seal assembly bears are polished. In a modification, the pipes are threaded into the element and member and the inner and outer seal rings are transposed ; the grease nipple is dispensed with and the plug is retained by a set screw. The boss is enlarged to extend into a recess in the surrounding element although it may be replaced by projections serving to locate the elements upon assembly or the fastening alone may perform this function. Two or more joints may be used together with their rotational axes at right angles and interconnected by an elbow.
Patent GB-566720-A (GB)
Title: Luminaires
IPC: B64F1/20
Filed: 1943-12-24
Abstract: 566,720. Luminairs. HOLOPHANE, Ltd. (Holophane Co., Inc.). Dec. 24, 1943, No. 21618. Addition to 561,541. [Classes 75 (ii) and 75 (iv)] A luminair suitable for use as a contact light on aircraft landing fields, is fitted with an annular one piece refractor 20 having a convex outer surface A and formed on its inner surface with annular steps B, C, D on which are superposed radial prisms E, F, G, the refracting power of the prisms E, F, G increasing on each side of the median plane 4 ... 4 so as to refract light rays such as 21, 22, 23 from a substantially point source 11 towards the median plane and the steepness of the annular steps B, C, D varying so as to maintain substantially constant the vertical angle of the emergent rays. The refractor 20 and cover-plate 17 are mounted in an astragal ring 12 which is bolted to a metal base 10. The astragal ring also supports a spherical reflector 14 below the light source 11.
Patent GB-953694-A (GB)
Title: Detection of faulty fuel elements in refuelling machines on nuclear reactors
Inventor: PAGE ERNEST BASIL
IPC: G21C19/02
Filed: 1959-06-24
Abstract: 953,694. Nuclear fuel elements. PLESSEY CO. Ltd. Sept. 15, 1960 [June 24, 1959], No. 21633/59. Heading G6C. The fuel elements of a nuclear reactor are tested after removal from the reactor, and either before or after loading into the magazine of the reactor refuelling machine by monitoring the cooling gas flowing over a selected fuel element in order to detect the rare gas fission products krypton and xenon, the escape of which through any puncture or similar defect is greatly enhanced for a time by reducing the external pressure on the fuel element. The fuel elements are lifted by a grab and cable arrangement (not shown) through a charge tube into a loading shoot which is deflected horizontally in order that the elements may be lowered into the chambers 5 of a storage magazine 4 rotatable about a vertical axis. In the embodiment shown in Fig. 2, each chamber 5 is sealed, in the position to which it moves after loading, by two hinged plates 7, 8 and is then depressurised by means not shown. In an alternative embodiment (Fig. 2), a block 9 rotatable about a vertical axis and having two chambers 10, 11 is mounted above the magazine 4 with one chamber 10 aligned with a loading shoot of the reactor and with the magazine chamber 12 which is intended to receive the fuel element from the shoot after testing. The block 9 is rotated to position the chamber 10 together with a fuel element between plates 7, 8 while chamber 11 receives the next fuel element. When the block 9 is rotated back to its first position, the tested fuel element can be dropped into the chamber 12 and another element placed in the vacated chamber 10. The gas removed from the chambers on depressurisation is monitored by a precipitation type detector and, according to the cooling requirements of the fuel element, the gas sampling may be an intermittent or continuous flow process. The depressurising can induce incipient faults to fail so that weak elements can be rejected before being returned to the core, this being of particular importance in the case of metallic uranium elements, especially at higher burnups, where a serious type of failure can occur due to progressive accretion of oxide within the sheath at the site of a defect too small to be detectable by normal methods, but which may result in a sudden burst releasing large quantities of active oxide.
Patent GB-243834-A (GB)
Title: Improvements in joints of electric cables
IPC: H02G15/18
Filed: 1924-09-15
Abstract: 243,834. Beaver, C. J., and Glover & Co., Ltd., W. T. Sept. 15, 1924. Junction boxes. - A cable joint of the type in which a box surrounding the joint is filled with a molten insulating compound, has a sleeve a of rigid insulating material placed over the joint b<2> and filled with insulating compound. The sleeve may be in one piece with a filling aperture a', Fig. 1, and sliding cover a' at the top, or it may be in two halves, Fig. 5. In the latter case plastic insulating material is filled into each half, a recess being moulded in the surface similar in form to the joint b<2> but slightly smaller. The halves are then pressed together round the joint and secured by clamps or screws of insulating material, or by strings wound in grooves.
Patent GB-592359-A (GB)
Title: Maximum kilovoltage limiter for x-ray tubes
IPC: H05G1/54
Filed: 1944-11-06
Abstract: 592,359. Protective cut - out systems. BALL, J. Nov. 6, 1944, No. 21751. [Class 38 (v)] [Also in Group XXXV] A control circuit for an X-ray tube 10 is provided with a voltage limiting device responsive to a predetermined condition thereof for disconnecting the energising circuit of the tube. High tension voltage is supplied to the tube 10 from a transformer 11 energized from an autotransformer 14 through selector switches 12a, 13a, the filament current being supplied from taps 15, 16 on the autotransformer 14 through a selector switch A and a transformer 17. A normally open switch 29 in the leads to transformer 11 is closed by a relay 30 energized from constant voltage mains L3, L4 on the closure of an exposure switch 31. A further relay 33 energized in accordance with the voltage across the tube 10 through leads 34, 35, controls a normally closed switch 32 in the circuit of relay 30, the energization of the former relay being in turn controlled by a selector switch C and a thyratron valve 39, whose grid 39b is biased by a transformer 44 and rectifier and filter circuits 45, 46. If on closure of the exposure switch 31, the peak kV across the tube is too high, the voltage applied to the plate 39a of valve 39 will be sufficient to overcome the bias on the grid thereof and render the valve conductive thereby energizing relay 33 and opening switch 32 which in turn causes switch 29 to open and deenergize the tube 10. Valve 39 can only be rendered non-conductive by opening the circuit from transformer 14, this being achieved when the switches 12a, 13a are moved to lower the peak kV since the said switches are made non-conductive in positions intermediate their contacts. Selector switches A, C, form part of a monitor switch, the former controlling the tube output and the latter, the voltage applied to the plate 39a of valve 39, i.e. the safe voltage which may be applied to the tube for the particular output selected by switch A.