baber/WOPTO huggingface dataset:
Patent GB-1253310-A (GB)
Title: Gas blast circuit-breaker
Inventor: FROWEIN EGBERTUS ADRIANUS
IPC: H01H33/873
Filed: 1969-12-10
Abstract: 1,253,310. Gas blast switches. COQ N.V. 10 Dec., 1969 [20 Dec., 1968], No. 60282/69. Heading H1N. In a gas blast switch, of the kind with two movable contacts which during an interruption initially move in the same direction until the trailing contact is arrested, each contact being mounted on an operating piston 7, 12 biased in the opposite direction by springs 10, 15 and a blast valve 16, 18 surrounding the contacts and being opened by the initial conjoint movement thereof, the underside of piston 7 is permanently subject to the high pressure gas in chamber 19 which tends to move the contacts in the opening direction, the contacts being held in the closed position by a latch 38. To cause an interruption a secondary latch 49 is withdrawn; high pressure gas drives a piston 40 carrying the latch 38 releasing the contacts. The pressure acting on piston 7 moves both contacts upwards opening the valve 16, 18. With the contacts still closed pressure in space 57 rises, acting on piston 12 to drive it upwards while piston 7 engages block 60 and the contacts separate. When the latch 38 is withdrawn a valve 46 is changed over. After a delay caused by a throttle 54 the high pressure gas drives a piston 37 to the right changing over a second valve 28 connecting the spaces 6b, 11b and 42b to the high pressure gas; the pressure is thus equalized on pistons 7, 12, 40 and they are returned to the position shown by respective springs 10, 15, 45 reclosing and relatching the contacts.
Patent GB-1345890-A (GB)
Title: Method of deposition of silicon by pyrolysis of silane
IPC: C30B25/02
Filed: 1971-12-29
Abstract: 1345890 Silicon MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 29 Dec 1971 [28 Dec 1970 29 Dec 1970] 60479/71 Heading C1A Silicon crystals are grown on a substrate by introducing a mixture of silane, hydrogen and an inert gas into a heated reaction chamber containing the substrate, the gram mol ratio of silane to hydrogen being not more than 10 : 1 and that of said inert gas to hydrogen being not more than 1000 : 1. The inert gas may be argon, helium, neon, krypton, xenon, radon or nitrogen. The process may be carried out in apparatus shown in Fig. 1, in which a bell-jar reactor 10 is provided with gas inlets and outlets 12 and 14. The reactor contains one or more susceptors 16 upon which substrate crystals 18 are mounted. The substrate is heated to a high temperature, e.g. 1150‹C. and the silane is cuased to decompose depositing silicon on the substrates. In general the substrate may be heated to a temperature between 450‹ C. and 1300‹ C.
Patent GB-1256095-A (GB)
Title: N-substituted 3-cyano-6-hydroxypyrid-2-ones
Inventor: BERRIE ALISTAIR HOWARD
IPC: C09B29/42
Filed: 1968-06-27
Abstract: 1,256,095. N-substituted pyridones. IMPERIAL CHEMICAL INDUSTRIES Ltd. 4 June, 1969 [27 June, 1968], No. 60901/70. Heading C2C. The invention comprises compounds of formula wherein n is 0 or 1, X<SP>1</SP> is H or an alkyl or aryl radical which may be substituted and Z is an alkoxyalkyl radical. The compounds are prepared by condensing compounds and CN.CH 2 COOalkyl in the presence of an amine Z-NH 2  or by cyclizing an appropriate α : #-disubstituted glutaconamide. The compound 1 - (γ - methoxypropyl) - 3 - cyano - 6- hydroxy-pyrid-2-one is specified and may be prepared by condensing together ethyl acetoacetate, ethyl cyanoacetate and γ-methoxypropylamine.
Patent GB-1306659-A (GB)
Title: Steam generators
IPC: F22B29/04
Filed: 1971-12-31
Abstract: 1306659 Steam generator SULZER BROS Ltd 31 Dec 1971 [31 Dec 1970] 61047/71 Heading F4A  A steam generator employs both forced flow and natural circulation of water which is first circulated by forced flow through a set of evaporator tubes in a hot gas flue and is then allowed to flow by natural circulation through the vertical tubes which form, at least in the region of the hot gas inlet, the walls of the flue. Hot gases pass through the flue 34 from muffle burners 70 to outlet 75 and a feed pump 17 supplies water, via economizer 3, header G, and support tubes 8, to a first evaporator surface 12. The steam water mixture passes along 14 to separator drum 15, and the water flows by natural circulation through downcomer 20 and, via headers 31, 41, up through the welded tubes forming the walls 31, 33, 42. Steam passes from the drum 15, via 50, through super-heaters 51, 55, 59 before being discharged through 60, and water from the downcomer 20 is injected between the stages at 53, 58 to produce more steam. Alternatively feedwater may be employed in the superheater injectors. The forced flow section produces at least 30% and preferably about 50% of the steam, the natural circulation section less than 40% and the injectors can produce at least 20%. As shown the water from downcomer 20 is passed by a circulating pump 22 to header 6 for recirculation downstream of the economizer 3, but in a further embodiment (Fig. 2, not shown) this water is fed to a reservoir (4) and then pumped to the inlet of the economizer, The water entering and leaving the reservoir are passed through a heat exchanger (2) so that the former may heat the latter. Moreover a level sensing device in the drum, and a flow rate sensing device in the reservoir outlet can operate valves to adjust the rate of flow into and out of the reservoir.
Patent GB-1283568-A (GB)
Title: Dynamo-electric machine rotor
Inventor: DALMO BROR
IPC: H02K3/16
Filed: 1969-12-22
Abstract: 1283568 Damping windings of electrical machines ALLMANNA SVENSKA ELEKTRISKA AB 22 Dec 1969 [23 Dec 1968] 62278/69 Heading H2A In a dynamo-electric machine rotor whose pole shoes 1 have in their air-gap surfaces axial slots 16 containing clamping winding electrical conductors 2 having cooling tubes 3, Fig. 6, and connected to each other by short-circuiting rings, each conductor comprises at least two adjacent part-conductors 6, 7 each having a longitudinal groove shaped to provide a contact surface for a cooling tube 17, Fig. 1, each groove together with a similar groove is another partconductor or a slot wall or a wedging means forming a channel in which the tube is clamped by the wedging means. As shown the latter comprises two high thermal conductivity wedges 18 either of the same length as the slot or subdivided axially, and rings 4, 5 supply and remove cooling liquid. In other embodiments single wedges, oval tubes and rectangular partconductors are used. The winding may be the starting winding of a synchronous motor and compensator.
Patent GB-660340-A (GB)
Abstract: 660,340. Wicks. METAL TEXTILE CORPORATION. Oct. 19, 1949, No. 26877/49. Class 75(i) A wick structure for liquid fuel burners comprises superposed layers 10 to 15, Fig. 7, of substantially straight glass filaments, each layer being substantially equal in thickness to the diameter of a single filament, the filaments of adjacent layers being oppositely inclined in the planes of the respective layers so as to cross at very acute angles and thereby provide vertical capillary interstices having a more rapid capillary action than if the filaments of adjacent layers were parallel and free to become enmeshed. The glass fibre layers A, Fig. 2, may be reinforced by parallel strips 16, 17, of flexible wire mesh near but spaced from the lower and upper edges, respectively, and secured by lines of stitching 18. Alternatively wide strips of flexible sheet material may be applied to both sides of the wick and secured by staples leaving marginal portions of the wick at the top and bottom. The reinforcement may be applied instead to one surface only of the wick. In the construction shown in Fig. 6. the wick body A is supported in a holder member 21 of substantially rigid sheet metal, U-shape in cross-section, and provided with a plurality of openings 22 to allow access for the liquid fuel to the lower portion of the wick.
Patent GB-731853-A (GB)
IPC: D01H5/26
Abstract: 731,853. Fibre drafting mechanism. VEREINIGTE KUGELLAGERFABRIKEN AKT.-GES. Nov. 26, 1952 [Nov. 30, 1951], No. 29986/52. Class 120(2). A double apron drawing mechanism has the upper apron roller mounted on a spring-loaded bracket pivoted on a carrier arm and a cradle mounted on the roller shaft and pivotable through an angle of less than 90 degrees, a spring being provided for tensioning the apron. The upper apron roller 36 is held in a bearing 321 on the spring-loaded bracket 32 by a spring 34, so that when the roller supporting arm 31 is raised the roller 36 is raised also, carrying with it the apron 30 and cradle 37 that is urged forward to tension the apron 30 by a spring 38 pressed against the bearing 321 and the front of the cradle 37. Extensions 372 on the cradle are downwardly turned to rest upon the lower apron deflector bar 14 and to act as lateral guides for the apron 30. When the arm 31 is raised, the cradle 37 swings downwardly until the end 381 of the spring 38 contacts the bracket 32. In an alternative embodiment, a spring corresponding to spring 38 is arranged to urge a roller against the bottom run of the apron 30 so as to deflect both upper and lower aprons from a straight path along their fibre-contacting runs. Another embodiment has a cradle formed with vertical walls 76, Fig. 10, provided with slots 762 in which a deflector bar 79 under pressure from a spring 78 may slide. When the arm 31 is raised, the cradle swings downwardly after sliding out of contact with an angle iron 85 attached to the lower deflector bar 83.
Patent GB-2021981-A (GB)
Title: Rotor
IPC: B04B7/08
Filed: 1978-06-01
Abstract: In the field of hollow high speed rotors there is an increasing demand for progressively higher speeds of safe operation. High speed operation causes support bearings to be carefully designed if the rotor speed is to pass safely through its critical speed of operation where intense vibration is experienced. Also the rotational speed is limited by the peripheral velocity and strength of the outside surface portion of the rotor. The invention proposes that elemental boron, which has great tensile strength and lightness be used to provide a major part of a hollow rotor so that increased operating speeds can be attained. Such a rotor is usable to provide a high speed centrifuge drum. <IMAGE>
Patent GB-2022142-A (GB)
Title: Method and apparatus for manufacturing a contact layer
IPC: H05K3/24
Filed: 1978-06-05
Abstract: To provide an electrical contact layer 1a to 1d and a metal support 2, a powder consisting at least partly of metal and located in an aperture 4a to 4d of a die electric insulating mask 3 placed on the support 2, is compressed onto the support by a first electrode 8a, and an electric current is then passed through the compressed powder between the first electrode 8a and a counter-electrode 10a electrically connected to the support 2, thereby sintering the powder and welding it to the support without notably changing the mechanical properties of the support.
Patent GB-2030801-A (GB)
Title: Regenerative energy recovery system e.g. for electromagnetic propulsion
IPC: H02M3/10
Filed: 1978-08-21
Abstract: Back e.m.f. can result in energy loss, or inefficient use of energy, in inductive circuits. A regenerative energy recovery system embodying the present invention employs switching 6 to discharge a capacitor 3, through an inductive load 5, e.g. a motor. When capacitor 3 is discharged, a diode 4 creates an alternative circuit path through which inductively maintained current may then continue to flow, for example to charge a battery 7. The invention may be of particular value in electromagnetic propulsion systems. <IMAGE>
Patent GB-2004225-A (GB)
Title: A mechanism for controlling the movements of the tool-holding carriage of a machine- tool
IPC: B23G3/08
Filed: 1978-09-14
Abstract: A mechanism for controlling the movements of the tool-holding carriage 2 of a machine-tool, in which the longitudinal movements of the carriage are obtained from a bell cam 5 with a helical cam surface, driven with a continuous rotational movement, is comprised by a lever 6 whose hinge pin 7 is fixed, one 9 of the arms of this lever, of fixed length, bearing on the cam whereas the other arm, adjustable in length, bears on the carriage through an inclined ramp 16 forming with the axis of the carriage an angle equal to the slope of the helix of the cam. The adjustable lever arm comprises a dovetailed slider 12 on a slide 11 with graduations for determining pitch size of screw threads to be cut. The cam axis may be parallel or perpendicular to the workpiece axis. <IMAGE>
Patent GB-2030467-A (GB)
Title: Screw press for filtering asbestos slurry
IPC: B30B9/12
Filed: 1978-09-30
Abstract: A horizontally disposed perforated cylindrical tube 18 has a helical screw 40 disposed therewithin, and a flanged jacket 10 concentric with and spaced outwardly therefrom. An asbestos slurry is continuously fed into the tube and refined slurry is drawn through the perforations 24 by a suction pump connected to the jacket while contaminants are moved by the screw to the outlet end of the tube where they are compacted and removed through a spring loaded discharge door 36. The perforations 24 may be circular, square or rectangular and are preferably tapered. Screw 40 has its outer periphery polished or chrome plated or equipped with flexible replacable strips of hard rubber, polypropylene, polyethylene, P.T.F.E., or alloy steel. A vacuum gauge in the suction line monitors the clogging of perforations 24. A constant head of slurry is maintained in feed reservoir 28 by an overflow or float control device. Vent tube 46 bleeds off air and foam. <IMAGE>
Patent GB-2010016-A (GB)
Title: Motor protection switch
IPC: H01H73/54
Filed: 1978-11-20
Abstract: A multi-pole circuit breaker of compact construction has a plurality of switching chambers 3 arranged in series along an axis, each chamber 3 containing a set of switch contacts 21, 22, 23 and actuating means including a common shaft 31 extending in the axial direction through the switching chambers from a latch chamber 2 disposed at one end. The switch also includes slide members 42, 58 extending axially through the switching chambers from the latch chamber, each slide member 42, 58 being associated, in each switching chamber, with a respective thermal or magnetic overcurrent tripping device 19 or 20 arranged, when operated, to urge the respective slide member 42 or 58 in the axial direction to trip an actuating mechanism in the latch chamber 2. This mechanism comprises a latched toggle system manually operable by a shaft 5 and "trip-free" in operation. <IMAGE>
Patent GB-2011571-A (GB)
Title: A toggle-lever mechanism
IPC: B30B1/14
Filed: 1978-12-11
Abstract: A toggle-lever mechanism has two toggle lever pairs 5, 6 and 7, 8 each connected between a fixed member 1 and a movable member 15. To drive the movable member 15 backwards and forwards along a rectilinear path, a hydraulic drive 11 is provided which causes the toggle joints 9, 10 to move towards and away from each other. <IMAGE>
Patent GB-2010292-A (GB)
Title: Three block copolymers
IPC: C08F297/06
Filed: 1978-12-13
Abstract: Three-block copolymers of the type ABA and ABC are disclosed in which A and C are plastomeric polymeric blocks and B is an elastomeric saturated polymeric block. The copolymers may be produced by first polymerizing the monomer for block A using a Lewis Acid catalyst and a catalytic amount of isobutene in such a way to keep alive the active centres in the chain ends for a time sufficient to permit the addition of the second monomer to produce block B, whereafter, with the aid of a particular catalyst preferably an alkyl aluminium halide, the growth of the third block A, or C, can be carried out. The copolymers e.g. polystyrene - polyisobutene - polystyrene, are resistant to oxidation, have elastomeric properties under certain conditions and have plastomeric properties under other conditions.
Patent GB-2022439-A (GB)
Title: Octane improvement cracking catalyst
IPC: C10G11/05
Filed: 1979-06-07
Abstract: A cracking catalyst composition comprises discrete particles of ultra- stable Y-type zeolite and discrete particles of alumina dispersed in a porous oxide matrix. The catalyst composition comprises 5-40 wt.% ultrastable Y-type zeolite, 5-40 wt.% alumina and 40-90 wt.% of porous oxide matrix. The cracking catalyst composition has unusually on high activity and selectivity for the production of high octane gasoline fractions from higher boiling point feedstocks.
Patent GB-2022766-A (GB)
Title: Adjustable Connecting Rod Drives for Oscillating Screen Separators
IPC: B06B1/10
Filed: 1979-06-11
Abstract: In an oscillating screen separator comprising a screen 11 mounted on a support structure 10 for reciprocatory movement relative thereto, a drive plate 14 is mounted on the support structure for rotary oscillation about an axis 15, means 16, 17, 18 are provided for imparting rotary oscillation to the drive element, and a connecting rod 20 is connected between the screen and a point on the drive plate 14 spaced radially from the axis 15 so that rotary oscillation of the drive plate imparts reciprocatory oscillation to the screen. The point of connection between the connecting rod 20 and the drive plate 14 is required to be adjustable towards and away from the axis 15 to permit adjustment of the amplitude of oscillating movement of the screen. A further screen 12 is driven by a further connecting rod 20 whose connection to the drive plate 14 is also adjustable. The connecting rod 18 in the drive to the drive plate may also be adjustable in the same way. <IMAGE>
Patent GB-2021454-A (GB)
Title: Device for use in the machining of a screw thread or grooves on a workpiece
IPC: B23G1/38
Filed: 1979-07-13
Abstract: The device comprises a base 12 adapted for securement to the bed 10 of machining apparatus, such as a grinding machine having a wheel 11, and a carriage 17 slidable rectilinearly relative to the base 12. A generally cylindrical member 33 and a holder 25, 26 for a workpiece W are supported by the carriage 17 for rotation about a common axis, the workpiece holder being disposed adjacent the grinding wheel 11. The member 33 has circumferentially-extending formations, such as a screw thread or grooves, on its external surface engaged by a follower wheel 35 on the base 12, so that the position of the carriage 17 relative to the base and therefore the grinding of the workpiece W by the grinding wheel 11 is determined by such engagement. A number of interchangeable members 33 having different thread pitches are provided to enable screw-threading of various pitches to be ground on the workpiece. The direction in which the carriage 17 moves relative to the base 12 is inclined to the rotation axis of the grinding wheel 11 at an angle equal to the helix angle of the screw-threading to be ground on the workpiece W. <IMAGE>
Patent GB-2026231-A (GB)
Title: Mass spectrometers
IPC: H01J49/26
Filed: 1979-08-15
Abstract: A portable mass spectrometer comprises a power pack C and a hand held probe P, the probe comprising a gas inlet 13 with a porous membrane 14, an ion source 15 which can also function as an ion pump, a quadrupole ion filter 16, an ion detector 17 and a chemical getter G to provide a vacuum within the probe. The spectrometer is intended for detecting chemicals in remote areas and does not require a conventional vacuum system. Valves 12 and 21 are provided on the probe P and getter G respectively, both valves being opened when these two parts are engaged. <IMAGE>
Patent GB-2029213-A (GB)
Title: Resiliently mounted vehicle seat
IPC: B60N2/52
Filed: 1979-08-22
Abstract: A suspension seat has a seat part 11, which includes a seat support frame 20 and a back rest frame 24, pivoted about a horizontal axis to the seat support frame, the seat part being mounted through a spring suspension 12, 13 on a base part 10, and a vibration damper 25 of the piston and cylinder type pivotally connected between the seat and base parts. The lower end of the vibration damper 25 is pivoted to the base part 10 at 28. The upper end of the vibration damper is slidably connected at 31 to the back rest frame 24 and pivotally connected to the upper closed end of a yoke 30 whose lower ends are pivoted at 32 to the seat part 11 as closely as convenient to the pivotal connection 28 to allow tilting of the back rest frame 24 without significantly varying the distance between the ends of the vibration damper. <IMAGE>
Patent GB-2030074-A (GB)
Title: Book reinforcing
IPC: B42D3/00
Filed: 1979-09-05
Abstract: A book spine reinforcing strip is of rigid plastics material and has elongate removable edge portions 12, 13 defined by lines of reduced strength in the plastics material. When it is to be used the edge portions are removed to leave bevelled edges, the strip is folded about a book spine by bending at hinges 23, 24, 25 and panels 14 and 15 are adhered to the front and rear faces of the book by adhesive 30. Corners 50 may be removed. <IMAGE>
Patent GB-2039848-A (GB)
Title: Fluid Dispenser and Dispensing Container
IPC: B67D1/04
Filed: 1979-11-16
Abstract: A fluid dispenser (D) for use at the bottom of a container (C) includes a base member having therein a vent (24) providing an air passage controlled by a valve (28), and a fluid dispensing passage (16) also controlled by a valve (46). The exterior air vent tube (32) and exterior dispensing tube (16) of the dispenser are usually sealed until the first use of the dispenser. The dispensing action is carried out by pressing a deformable portion of the container or supplying pressurised gas to the container thereby increasing the pressure within the container, and in the normal position of the container with the dispenser at the bottom thereof. Where an air/fluid contact is to be precluded, a bladder may be placed within the container, having fluid communication with the air passage, for expansion and pressure equalization as the dispensing action continues. <IMAGE>
Patent GB-2038127-A (GB)
Title: Interface circuits
IPC: H03F1/02
Filed: 1979-12-11
Abstract: An interface circuit comprises voltage followers 25, 27 having a common input 23, with voltage follower 27 having fixed power supply rails 28 and voltage follower 25 having swinging power supply rails the voltage levels of which are varied in accordance with the output signal of 27, and in phase with the input signal. It is shown mathematically in the Specification that the gain of 25 is then given by (1-1/A1A2), where A1, A2 are the respective open loop gains of 25, 27, i.e. the gain is nearer unity than for 25 alone with fixed supply rails. In the circuit of Fig. 4 the PD between the swinging supply rails is maintained substantially constant by Zener diodes 38, 39 supplied by current sources 37, 40. When two interface circuits according to the invention are connected in the respective input circuits of a differential amplifier (15), Fig. 2 (not shown), its effective input impedance and common mode rejection are both increased. <IMAGE>
Patent GB-2052261-A (GB)
Title: A preparation for combating noxious insects in horticultural produce
IPC: A01N63/14
Filed: 1980-05-13
Abstract: A preparation for combating noxious insects comprises a dredgeable mixture of living not fully grown ichneumons, for example, host pupae parasited by ichneumons, and a granular light material. The method for preparation and for using the preparations is also disclosed.