baber/WOPTO huggingface dataset:
Patent GB-1216993-A (GB)
Title: Improvements relating to control systems for nuclear reactors
Inventor: DEAN JOHN RAYMOND
IPC: G21C7/20
Filed: 1966-12-15
Abstract: 1,216,993. Controlling reactors. A. REYROLLE & CO. Ltd. 14 March, 1968 [15 Dec., 1966], No. 56253/66. Heading G6C. In a nuclear reactor control rod positioning system, the rod is movable along a vertical axis by an electric motor through a chain and sprocket mechanism. In an emergency, the motor is de-energized and the rod falls under gravity, subject to friction braking which increases during the final section of the fall. The braking is controlled automatically in accordance with the speed of descent, by a centrifugal governor responsive to the rod rate of fall. The sprocket 12, which carries the control rod chain, is driven by motor 14 through the magnetic clutch 15, shaft 21 with friction brake 26, and lay-shaft 28. In an emergency, motor 14 and clutch 15 are de-energized, the rod commences to fall and causes rotation of the main shaft 21. The weights 71 are urged outwardly to close the disc brakes 60, 75 and 80 against the action of spring 85. Simultaneously, the lower brake 50 is moved upwards by the lead screw 44 to effect compression of the discs 76, 82 and to apply a progressively increasing braking torque. The latter is limited by a reduction of the force exerted by the weights 71 as the shaft speed is reduced.
Patent GB-562600-A (GB)
Abstract: 562,600. Draining concreted or paved areas. BROAD & Ltd., and HARRIS, D. G. Dec. 31, 1942, No. 18617. [Classes 20 (iv) and 107] Concrete or paved areas, such as runways for aircraft, are drained by means of trenches or catch basins formed of concrete and covered by a grating formed of a number of concrete bars extending across the trench, &c. In Figs. 1 and 2, a concrete catch basin 1 has shoulders 3, 4, supporting transverse concrete bars 5, the upper surfaces of the bars being flush with the top of the basin 1; transverse walls 6 are provided at intervals along the length of the basin. The bars have rectangular ends 8, Fig. 3, and narrower central portions 10, and may be interlocked with the basin by means such as projections 12, recesses, ribs or corrugations, engaging complementary formations. Concrete, &c. packing pieces 13 take up play. The bars may be reinforced as by iron rods 14, Fig. 5, with hooked ends engaged by wire stirrups 15, 15<1>. A number of basins may be formed side by side, and may be separate or a common partition wall may separate adjacent basins. The catch basins may be formed of pre-cast units placed on a trench, &c., and the walls 6 may be integral therewith or separate; the units may be open at one end.
Patent GB-1326045-A (GB)
Title: Electrical connector having contact retention system
IPC: H01R24/38
Filed: 1970-11-27
Abstract: 1326045 Two part couplings BUNKER RAMO CORP 27 Nov 1970 [15 Dec 1969] 56524/70 Heading H2E In an electric connector, contacts 40 in one half 10 are retained by annular projections 78 and 64, of flexible, resilient, dielectric bodies 52, 50, the projections abutting opposite sides of the raised shoulders 46 of the contacts, the dielectric bodies sandwiching an isolation disc 88 which may be of yieldable silicone rubber material. Each annular projection on body 52 is split into a series of tines, Fig. 2, (not shown), separated by gaps 81, the tines being urged inwards by the silicone rubber around them, so that they snap fit behind a contact introduced from the back of the connector, said contact being removable using a sleeve tool to spread the tines. The dielectric bodies and the isolation disc are bonded together and retained within the connector case 14 by shoulder 38 and the resilient skirt 30 which snaps into engagement with recess 72. A similar arrangement in the second part of the connector 12 secures contacts 41. A longer forward insulating insert 96 being included. A bayonet type fitting 30, 32, holds the two halves in contact, a seal 36 being included. Potting compound 84 secures the soft silicone rubber grommets 82 to the shells 14, 20. Section 10 of the connector may be panel mounted using flange 16 and a securing nut on the threads 18.
Patent GB-1277935-A (GB)
Title: Leak detecting means for vacuum switches
IPC: G01M3/26
Filed: 1969-11-21
Abstract: 1277935 Vacuum switches; electric transformers TOKYO SHIBAURA DENKI KK 21 Nov 1969 [22 Nov 1968] 56989/69 Headings H1N and HIT  Loss of vacuum in a vacuum switch is detected as liquid loss from a liquid filled enclosure surrounding the switch. In Fig. 2, an on-load tap changer has vacuum switches 10a, 10b combined with a tap selector switch 50 and vacuum switches 10c, 10d combined with tap selector switch 51. Oil-filled enclosures 15a to 15d surround the vacuum switches such that loss of vacuum, with the consequent leak of oil into the switch, is detected by bellows 63-66 having contacts 74-71 such that an alarm is actuated, the motor 53 is stopped and the transformer deenergized. The switches are operated by cams 56 to 59 through motor 53 and reduction gearing 52 which also operate the top charging switches. In Fig. 1 (not shown) the leak of fluid from the vacuum switch enclosure into the vacuum switch is detected by a contact bridging float in a liquid reservoir.
Patent GB-1392637-A (GB)
Title: Plastics extrusion cutting-off machines
IPC: B26D3/16
Filed: 1972-12-11
Abstract: 1392637 Parting-off machine; beds and frames SPEEDEX ENG Ltd 21 Nov 1973 [11 Dec 1972] 57112/72 Headings B3T and B3B [Also in Divisions B4-B5] A parting-off machine comprises a carriage 5, a rotary cutter head 12 mounted on the carriage, at least one cutting tool 55 carried by head 12, and adapted to be intermittently moved radially relative to the workpiece by a cam and follower 23, 66-69, when there is relative rotation between said cam and said head 12. Carriage 5 has a pair of clamps 7, 8 actuated by pneumatic rams 9, 10, so as to clamp the workpiece which is received from a plastics extrusion line into a core tube 11. The carriage is movable on rails 4 carried by a frame 1 which is moved on castors 2 and supported in the required position by retractable feet 3. Cutter head 12 is mounted for rotation on tube 11 and after clamping of the workpiece, carriage 5 is moved along the frame with the cutter head rotating around the extrusion. Cam 23 has notches 32 and a plunger 29 carried by a toothed pulley 28 is adapted to engage a notch and drive the cam in one direction only. A second cam 22 also has notches 27 which are engaged by a plunger 24, slidably mounted in a sleeve 16 driven by a second toothed pulley 19. The latter is driven by a toothed belt 33 from a toothed pulley 34 driven by an electric motor 38. Pulley 28 is driven by motor 38 via a toothed belt 39 through idler rollers 41-44, and 45, 46, rollers 45, 46 being mounted on a sub-carriage 47 movable along a rail 48 by a pneumatic ram (52) Fig. 3 (not shown). A parting-off tool 55 is located on flange 17 of sleeve 16, and the flange also supports a chamfering tool radially movable by cam 22 which actuates a second follower assembly 66- 71. In operation, the extruded material passes into bore 11 and is clamped by clamps 7, 8. There is no relative rotation between pulleys 19, 28, and the tools rotate around the workpiece without any radial movement. To cause the tools to move radially so that the workpiece is firstly chamfered and then parted-off, subcarriage 47 is moved to the right Fig. 2, by rams (52, 53), Fig. 3 (not shown), so that belt 39 is accelerated and pulley 28 is driven faster than pulley 19, whereupon cams 22, 23, and bush 20 are driven in the anticlockwise direction relative to sleeve 12, plunger 24 rides out of notch 27, lobes on cams 22, 23, actuate followers 69 and the tools are moved radially. The cam lobes are so arranged that the chamfering tool acts before the parting-off tool. The belt drives may be replaced by a common motor, or separate motors which drive through clutches and gearing. Ram 52 may have an hydraulic dashpot.
Patent GB-1142709-A (GB)
Title: A new or improved overload clutch or torque limiting device
Inventor: GOLD DEREK LAWRENCE
IPC: F16D43/20
Filed: 1966-12-21
Abstract: 1,142,709. Positive clutches. FISHOLOW PRODUCTS Ltd. 24 Nov., 1967 [21 Dec., 1966], No. 57328/66. Addition to 1,049,525. Heading F2C. In the overload release clutch of the parent Specification 1,049,525, the friction thrust bearing washer (38), see drawing in abridgment of parent Specification, between the driven disc (11) and the ball retaining disc (26) is omitted, the discs (11) and (26) being in direct face to face frictional contact to achieve the same effect. The coil spring (14) loading of the overload release clutch may be replaced by a liquid type spring, e.g. an oil-filled closed ended cylinder engaged in one end by a piston of much smaller cross-sectional area than the cylinder interior.
Patent GB-1399540-A (GB)
Title: Finishing machine
IPC: B24B31/06
Filed: 1972-12-13
Abstract: 1399540 Vibratory finishing FOX CHEMICAL-ENG WORKS Ltd 7 Dec 1973 [13 Dec 1972] 57428/72 Heading B3D A finishing machine comprises a finishing chamber 12 mounted resiliently for vibratory motion about a substantially horizontal axis, the chamber having an entry opening 18 for the articles to be finished and an exit opening 23 for the finished articles, the exit opening being connected to the entry opening so that a finishing medium can be recirculated and the finished article collected, and the entry opening being laterally spaced from and below the exit opening. The chamber is in the form of a drum supported at its ends by bearings 22 from a shaft 10 which is rotated by a belt drive 6 from a motor 7 and mounts an eccentric weight 3 at each end which impart vibration to the drum. Each bearing has a pair of angle plates 21 each plate being connected by double springs 11 to a frame 13. A tube 8 within the drum surrounds the shaft 10 so that the operative region of the drum is annular. An opening 5 adjacent one end of the drum is connected by a vertical shoot 33 to the entry opening 18 of the finishing chamber, the entry opening being near the bottom of the chamber. The exit opening is adjacent the other end of the drum and connected by a passageway 19 to one end of a housing 24 spaced from the drum, the other end of the housing being connected by a passageway 32 to the opening 5 leading to the shoot 33 and inlet opening 18. Finished articles and finishing medium fed from the exit opening move along the passageway 19 to a tray in the housing consisting of bars 25 above a separating screen 9. The finishing medium is returned to the drum by way of the passageway 32 and shoot 33, undersized switches being separated from the medium by a further screen 20. A spray from a pipe 30 cleans the articles and passes with the undersized particles through an outlet 31. The end portions of the bars 25 are separate from the main bars and can be tilted by a handle 36 to direct the articles back into the drum if they need further processing. The interior of the drum has deflector plates 1, 4 and a riser plate 2 adjacent its ends to assist the passage of articles in the drum. A second shoot parallel to shoot 33 opens to the top of the drum to reduce back pressure in the drum.
Patent GB-1270812-A (GB)
Title: Method and device for colour modulation
IPC: H01G7/02
Filed: 1969-03-27
Abstract: 1,270,812 Modulating light HITACHI Ltd. 27 March, 1969 [30 March, 1968], No. 57561/70. Divided out of 1,270,811. Heading H4F. Selected components of white light are transmitted through the combination of a polarizer 1, a birefringent crystal 2 and an analyser 3, the crystal 2 being of an irregular ferroelastic material-i.e. it is ferroelectric, optically biaxial, and ferroelastic (that is, when a suitable constraint such as an electric field or mechanical stress is imposed thereon the crystal shows hysteresis characteristics of its physical properties such as spontaneous polarization and strain relative to the constraint)- so that when an electric field greater than a coercive value is applied thereto parallel to the crystal c-axis, the polarization of the crystal is reversed and the a and b axes are effectively interchanged and the interference colour of the transmitted light alters. Thus if the crystal c-axis and the optical axis of the arrangement are parallel, and the a and b axes are at 45 degrees to the plane polarized light from 1, switching the crystal between its two states changes the emergent elliptically polarized light from one hand to the other. A further birefringent crystal 10<SP>1</SP> e.g. of mica may be included. A series of n ferroelectric crystals may be interposed between polarizers 1, 2, which are either identical and operated simultaneously, to reduce the supply voltage required across each crystal, compared with that required for a single crystal of n times the thickness, or they have different characteristics, such as thickness, and are selectively operable to pass any one of 2<SP>n</SP> different colour components. Reference is had particularly to the case wherein two such crystals provide red green and blue components. Suitable ferrelectric materials are Rochelle salt, cadmium ammonium sulphate, aluminium methylammonium sulphate dodecahydrate, KDP, (below the curie point), and particularly those with the formula R 2 O 3 .3Mo 1-e W e O 3  where R is one or a mixture of rare earth elements (including T, Sc, La) and e is from 0 to 0.2, many of which are listed and the properties of Gd 2 MoO 4  described in greater detail.
Patent GB-1224789-A (GB)
Title: Improvement of the process for increasing the amino-acid content of cereal grains
IPC: A23L7/10
Filed: 1968-12-05
Abstract: 1,224,789. Increasing the amino-acid content of cereal grains. STAMICARBON N.V. 5 Dec., 1968 [7 Dec., 1967], No. 57799/68. Heading A2Q. A process for increasing the amino-acid content of cereal grains (e.g. wheat or maize) comprises first contacting the grains with water to enhance their water content, then contacting the grains for a period of time with an aqueous solution of one or more amino-acids, and then drying the grains. In the examples, L-lysine monohydrochloride in a 25-30% by weight aqueous solution, is contacted with the grains following a previous soaking of the grains in water at 55-60C. for about 3¢ hours. In a first example, using unbroken wheat grains, having an initial L-lysine content of 0.2% by weight, a cereal product containing 8% by weight of L-lysine monohydrochloride was obtained after drying to reduce the water content to 14% by weight. In a second example, the wheat grains were broken by subjecting them to pressure between two oppositely-rotating rubber-lined rollers, following soaking and prior to contacting with the L-lysine monohydrochloride, a cereal product containing 11.8% by weight of L-lysine monohydrochloride then being obtained. In a third example, maize grains treated as the wheat grains in the first example produced a cereal containing 9.5% by weight of L-lysine monohydrochloride.
Patent GB-1437545-A (GB)
Title: Buoyancy aid
IPC: B63C9/04
Filed: 1973-12-14
Abstract: 1437545 Buoyancy aids SALTER BROS Ltd 14 Oct 1974 [14 Dec 1973] 58134/73 Heading B7U [Also in Division B5] A buoyancy aid, e.g. a liferaft comprises a moulded plastics casing 14, 15 forming an airfilled or foam-filled enclosure, with a plurality of rope-attachment points around its periphery, each point being formed by a pair of partcylindrical recesses 22 and a bore 23 connecting the recesses. Each surface of the raft has non- slip portions 20, and either a recess 25 or projection 26 to assist stacking. A number of the aids can be strung together in the form of a ring. In making a buoyancy aid, two shells 14 and 15 are moulded by vacuum forming or lay-up techniques, and each shell can be filled with, e.g. polyurethane foam, in a mould (30), (31), Fig. 4, not shown, before the shells are joined by resin impregnated tapes 16 and the bores 23 drilled.
Patent GB-1416038-A (GB)
Title: Acentaphthenes
IPC: C07C225/18
Filed: 1973-12-17
Abstract: 1416038 Acenaphthenes RICHARDSONMERRELL Inc 17 Dec 1973 [21 Dec 1972] 58257/73 Heading C2C Novel compounds (IV) (including salts thereof) wherein A is a straight or branched alkylene chain having from 1 to 6 carbon atoms; and Y is selected from (a) wherein R 1  and R 2  are hydrogen, lower alkyl having from 1 to 6 carbon atoms, cycloalkyl having from 3 to 6 carbon atoms or alkenyl having from 3 to 6 carbon atoms in which the unsaturation is in a position other than the 1- position of the alkenyl group; (b) wherein n is an integer of from 4 to 6, and R 3  is hydrogen, lower alkyl having from 1 to 4 carbon atoms, phenyl or benzyl in which said R 3  group is linked to any of the heterocyclic carbon atoms; and (c)  wherein X is oxygen or NR 4 , in which R 4  represents hydrogen or a lower alkyl group having from 1 to 4 carbon atoms; are made by reacting the corresponding 3,6-bis-(haloacyl) acenaphthenes with YH. Pharmaceutical preparations having antiviral action contain (I) as active ingredient; the usual administration forms are described.
Patent GB-1362068-A (GB)
Title: Process for the preparation of acrylic and methacrylic acids
IPC: C07C51/25
Filed: 1971-12-17
Abstract: 1362068 Oxidation catalysts NATIONAL DISTILLERS & CHEMICAL CORP 17 Dec 1971 [17 Dec 1970 10 Nov 1971] 58793/71 Heading B1E [Also in Division C2] A catalyst composition comprises palladium, metal, phosphoric acid and a support therefor. The metal may be alone or admixed, alloyed or in solid solution with a further metal such as ore from Group VIII or IB, e.g. silver or gold. Silica, alumina, titania, carborundum, carbon or ion exchange resins may be used as supports. Proportions of from 0.01 to 5% of palladium each 1 to 50% of phosphoric acid based on the total imposition may be used. The palladium may be deposited by a salt impregnation followed by reduction to the metal and syrupy phosphoric acid is added followed by calcining. Examples describe the preparation of a palladium, phosphoric acid, alumina catalyst, and palladium, gold or silver phosphoric acid catalyst on alumina and also the use of a silica support.
Patent GB-1211370-A (GB)
Title: Band limited telephone line data communication system
Inventor: WHANG SANG Y
IPC: H04L27/233
Filed: 1967-12-28
Abstract: 1,211,370. Electric selective signalling. MILGO ELECTRONIC CORP. 28 Dec., 1967, No. 58896/67. Heading G4H. [Also in Division H4] In a digital to digital converter, serial binary data is fed to 3-bit shift register 80. The register output feeds gates 93, each of which is enabled by a unique combination of 3 bits. The enabled gate allows clock pulses from source 97 to pass to a corresponding one of units 98. Each unit 98 passes a different number of pulses, the number of pulses passed uniquely representing the input 3-bit data group.
Patent GB-1275700-A (GB)
Title: Improvements in or relating to chlorinated hydrocarbons
Inventor: LUKES JAMES JOSEPH
IPC: C07C21/12
Filed: 1970-12-14
Abstract: 1275700 Trichloroethylene and perchloroethylene DIAMOND SHAMROCK CORP 14 Dec 1970 [15 Dec 1969] 59320/70 Heading C2C Trichloroethylene and perchloroethylene are produced by vapour-phase reaction of chlorine and ethylene dichloride in a fluidized bed at 380-550‹ C. at substantially atmospheric pressure in a system comprising separate trichloroethylene and perchloroethylene production lines, each comprising a reactor, a quench system, neutralization and drying means and at least two fractionation columns, at least a part of the overheads from the first trichloroethylene fractionation column being diverted to the perchloroethylene reactor. The light ends-HC1 mixture obtained from the quench systems may be separated, optionally in a common separator, and the light ends recycled to a reactor. At least a portion of the bottoms from the last trichloroethylene fractionation column may be recycled to the first perchloroethylene fractionation column. The overheads from the final fractionation columns may be used as a cooling recycle to the reactors. A common final fractionation column may be used. The fluidized bed medium specified is a spent alumina-silica hydrocarbon cracking catalyst.
Patent GB-1371066-A (GB)
Title: Arrangement for reducing unburned detrimental components of the  exhaust gas of an internal combustion engine in a vehicle provided  with automatic transmission
IPC: B60W10/10
Filed: 1971-12-21
Abstract: 1371066 Change-speed gear control TOYO KOGYO CO Ltd 21 Dec 1971 [21 Dec 1970] 59511/71 Heading F2D In order to reduce the deterimental exhaust gas components when the engine is cold an automatic transmission is arranged to allow upshift only at higher speeds at least from one ratio. In a transmission in which shift valves 6, 7 are normally controlled by throttle and governor pressure valves 8, 9 in a circuit supplied by a pump 10 a downshift valve 5 is provided operated either by closure of a switch 3 by an accelerator pedal 4 upon kickdown or closure of a switch 2 by a thermosensor 1 responsive to engine or gas purifying reactor temperature. Operation of the valve 5 prevents upshift until the maximum speed for the engaged gear is reached regardless of accelerator position. Alternatively the switch 2 may be operated by a choke control associated with cold running. The closure of switch 2 may be rendered ineffective on changes between some ratios and it may act other than through the valve 5.
Patent GB-1373125-A (GB)
Title: Self-flushing filter
IPC: B01D29/15
Filed: 1971-12-29
Abstract: 1373125 Self-flushing filter KANAGAWA KIKI KOGYO CO Ltd 29 Dec 1971 [28 Dec 1970] 60359/71 Heading B1D A continuously self-backwashing oil filter comprises a cylindrical chamber with oil inlet 4 and containing two cylindrical filter elements, a primary filter 20 and a secondary filter 21. The inner surface of each filter is divided by a ported and ribbed cylinder 8 into twelve separate compartments 14 and at any one time, eleven of the twelve compartments of each filter are being used for filtering oil whilst the remaining compartments are being backwashed. Each chamber of each filter is backwashed sequentially by means of a rotating valve member 25 mounted within the cylinder 8. In Fig. 1, eleven of the primary filter element chambers are filtering incoming oil from inlet 4 (as shown for the left hand chamber in the figure) the majority of the filtered oil leaving through outlet 5. A small proportion of the filtered oil passes through an opening 24 and is used to back flush one of the chambers of the lower filter element, the sludge produced being removed through outlet 7. At the same time, the remaining chamber of the upper filter (the right hand chamber in figure) is being backwashed with filtered oil and the used back wash fluid is then further filtered through the eleven chambers of the lower filter which are not being backwashed at that time. The filtered oil is removed through outlet 6. Both filter elements comprise filter paper supported on a wire screen.