baber/WOPTO huggingface dataset:
Patent GB-371112-A (GB)
Title: Improved process for the preparation of alumina
IPC: C01F7/18
Filed: 1931-03-07
Abstract: 371,112. Alumina; aluminium and alkaline-earth metal salts. LONZAWERKE ELEKTROCHEMISCHE FABRIKEN GES., Waldshut, Baden, Germany. March 7, 1931, No. 7131. Convention date, March 7, 1930. [Class 1 (iii).] Alkaline-earth aluminates, for instance calcium aluminate, are treated with aluminium salt solutions which may contain alkaline-earth salt, for instance with a solution of aluminium and calcium nitrates, to bring the aluminium into solution as a basic salt. More than 1 1/3 and preferably at least 2 mols. of aluminium salt are present for each 2 mols. of aluminate. From the solutions obtained alumina mav be precipitated by ammonia, the residual alkalineearth salt solution, after expulsion of ammonia by lime, being used again after addition of aluminium salt to extract further aluminate, or being worked up to solid salt. Alternatively, a part of the alumina may be precipitated from the basic salt solution by electrolysis and the residual solution be used again cyclically until a high concentration of alkaline-earth salt is obtained. Alumina remaining in solution may then be precipitated by excess alkalineearth hydroxide, and the solution be worked up to solid alkaline-earth salt ; the alumina precipitated being dissolved in acid for re-use as solvent. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the following subject-matter : the use, as solvent for the aluminate, of alkaline-earth salts alone, with subsequent precipitation of alumina by specified acids or ammonium salts, and recovery of barium or calcium nitrate ; and production from the aluminate of basic aluminium salt solutions by means of nitric acid with subsequent precipitation of alumina by ammonia. This subjectmatter does not appear in the Specification as accepted.
Patent GB-948624-A (GB)
Title: Improvements in and relating to fuel injection installations
IPC: F02M59/36
Filed: 1960-03-01
Abstract: 948,624. Regulating I.C. engines and fuel injection pumps. P. E. BESSIERE. March 1, 1960 [June 2, 1959], No. 7170/60. Heading F1A and F1B. In an I.C. engine fuel injection installation in which a pump piston-cylinder assembly 2 Fig.1 successively feeds fuel injectors through a distributer 9, 10, the discharge end of the interconnecting conduit 8 communicates periodically with a discharge passage 13 having means whereby a predetermined pressure is maintained in conduit 8 before the beginning of each delivery period, the discharge passage being controlled so that communication with the conduit is closed before the beginning of each delivery period and opened at the earliest at the end of each injection. During successive delivery strokes of the piston 1 rotary element 10 connects conduit 8, through grooves 12 and 11 successively to the injectors through conduits 11 1 , 11 2 , 11 3 . After each injection period groove 12 communicates through one of the grooves 19 with the discharge passage 13 which has a calibrated pressure relief valve 15. In a modification the pressure is maintained by the delivery of a continuous output pump or in a further modification the pressure relief valve may be replaced by a simple throttle. In another embodiment the delivery of a single cylinder pump 1, Fig. 2 is modified automatically in dependency on the speed of the engine by means of a slide 20 which controls a discharge conduit 27. During the delivery stroke an auxiliary piston 21 delivers liquid through a non-return valve 24 into cylinder 25 beneath slide 20 which moves upwardly against return spring 26. Fuel delivery ceases when groove 20a discharges conduit 27. When slide 20 returns, liquid in cylinder 25 is directed through a throttle 29, and the return of slide 20 is braked and the resulting reduced slide stroke adjusts the effective delivery stroke of piston 1. Specification 861,754 is referred to.
Patent GB-1527777-A (GB)
Title: Control of automotive internal combustion engine
IPC: F02D35/00
Filed: 1976-02-24
Abstract: 1527777 Automatic control of vehicle exhaust NISSAN MOTOR CO Ltd 24 Feb 1976 [7 March 1975 13 June 1975] 07185/76 Heading G3R [Also in Division F1] FIG. 4     In a system for controlling the air/fuel mixture supplied to an I.C. engine in response to a constituent of its exhaust gases, measured ahead of a catalytic converter, so as to maintain the mixture at a predetermined (stoichiometric) value, the mixture is enriched. When the engine is decelerated, the object being to ensure complete combustion which would otherwise not occur in these conditions. The control system is of the type in which the output of an exhaust gas sensor 24 is compared with a reference to give a high or low signal which is amplified in a PI amplifier whose output is combined with a sawtooth waveform to produce square pulses of variable duration which operate air-bleed valves 28 in an on/off manner. Deceleration may be detected from the angle of the throttle 54, engine speed, movement of the accelerator pedal and intake manifold vacuum. In one embodiment Fig. 3 (not shown) these parameters operate switches to inhibit the control circuit during deceleration. The valves 28 are closed by their springs, resulting in a richer mixture. In the alternative embodiment shown, during deceleration the control circuit remains operative but additional fuel (and air) is admitted at 118 by opening of a further valve 120 in response to throttle position (closed) only. The additional mixture is formed in tube 114 from fuel drawn from tube 110 and air through orifice 116 and, preferably, from 112 also, the latter being controlled by the valve 28b. Secondary air may be supplied to the exhaust at the catalytic converter. It is stated that the valves 28 may alternatively be operated progressively, and that the invention may be applied to a fuel injection engine, the quantity of fuel, rather than air, being regulated.
Patent GB-492333-A (GB)
Title: Improvements in or relating to electric cables
IPC: H01B11/00
Filed: 1937-03-12
Abstract: 492,333. Cables. STANDARD TELEPHONES & CABLES, Ltd., and GENT, A. W. March 12, 1937, No. 7338. [Class 36] To minimize the increase in impedance of the conductors of the outer layer due to their proximity to the screen, in a cable comprising a plurality of conductors arranged in layers and surrounded by a main screen, an intermediate screen of a material having a lower intrinsic impedance than that of the face metal of the main screen is inserted between the main screen and the conductors, the thickness of the intermediate screen being such as to minimize the increase in impedance of the conductors of the outer layer to the desired extent. The Specification includes formulµ whereby the thickness of the intermediate screen may be determined. The intermediate screen may be of copper of aluminium, whilst the main screen may consist of iron or lead or may be of composite form as described in Specification 486,536. Fig. 2 shows a carrier frequency cable comprising concentric groups 1, 7 of conductors transmitting in opposite directions and separated by a main screen 4 of high permeability material. Intermediate screens 3, 5 are arranged on each side of the main screen. A lead sheath 9 completes the cable. Spacings 2, 6, 8, determined in accordance with Specification 453,124, are provided between the intermediate screens and the conductor groups and between the lead sheath and the outer conductor group to prevent increase in impedance which would otherwise occur in the conductors adjacent the intermediate screens and the sheath. In the modified construction shown in Fig. 3 the conductor groups are semicylindrical and each is surrounded by a main and an intermediate screen.
Patent GB-477017-A (GB)
Title: Improvements in or relating to vibrating or striking apparatus
IPC: B28B1/087
Filed: 1936-03-11
Abstract: 477,017. Linkwork. VEINBERG, (nÚe ILIACHENKO), Z., and VEINBERG, V. March 11, 1936, No. 7361. Void. Convention date, April 4, 1935. [Class 80 (iii)] [Also in Groups V, XVII, and XXX] Relates to the production of vibratory motion to be applied, for example, to vibrating tables for compressing and ramming concrete, shaking tables in foundries, platforms for sacking cement, hammers, &c. The vibrations are produced by the alternating displacement of a point formed by the free extremity of a deformable, flexible or articulated system, the other extremity of which is fixed and an intermediate point of which is displaced alternately from each side of a mean position. The deformable system, Fig. 1, is formed by two rods 1, 2 pivoted together at 3, one extremity 4 being fixed and the other free extremity 5 connected to the part to be vibrated. The pivot 3 is reciprocated through a link 6. Several similar systems may be grouped to give an alternating movement of the plane a, passing through the point 5, to a<1>. A single driving source for all the systems is preferred. The part 1 of the system is stated to move according to the principle of the pendulum. In Fig. 2, the vibrated table 7 is mounted on springs 9 and the deformable system 1, 2 is driven through a link 6 and a frame. The rods 1, 2 may be replaced by cables or steel bands. In Fig. 4, vertical vibrations of the table 7 are produced by a combination of deformable systems of small dimensions, the pivots 3 of one system being connected to the pivots 3<1> of the other system. The secondary systems are returned by springs 15, and the primary systems by springs 16. In Fig. 5, a table 7 is vibrated in a horizontal plane by two deformable systems 1, 2 the pivot points of which are connected together. The members 2 are pivoted to the base 10, the members 1 passing over pulleys 19 and having their free ends secured to the table. Control of the vibrations may be obtained by an eccentric mass 20 in contact with the member connecting the pivots 3. In a further modification, the pivots 3 of the deformable systems are mounted on a ring to which an oscillating movement is imparted.
Patent GB-1018861-A (GB)
Title: Open ring antenna
IPC: H01Q9/26
Filed: 1963-02-25
Abstract: 1,018,861. Aerials. NORTHROP CORPORATION. Feb. 25, 1963 [June 29, 1962], No. 7429/63. Heading H4A.  In a low frequency aerial system arranged to transmit or receive vertically polarized radiation uniformly in a horizontal plane over one (or more) frequency bands and comprising one (or more) radiating members 1 in the form of an almost closed horizontal loop or polygon spaced a distance H above an earthed plane 4 one end 5 is bent or otherwise extended to connect with the earthed plane 4 (which may be a conductive plate or a web-like arrangement of conductors), the other end is coupled to the earthed plane 4 through a fixed or variable capacitor 60 and the feed line or lines 69, 70 comprising the inner cores of coaxial cables are connected to the loop a short distance Jl, J2 from the first end 5. The diameter D of the radiating loop and its height H are preferably within the limits 0À01#-0À75# and 0À001#-0À125# respectively. In a modification using a balanced feeder, Fig. 11 (not shown), the earthed plane 4 is replaced by a second radiating loop arranged as a mirror image of the loop 1 and spaced therefrom a distance 2H, the ends 5 of the loops are interconnected by a conductor perpendicular to the planes of the loops and the capacitor is connected between the other ends of the loops, each conductor of the balanced feeder being connected to a respective loop. In one embodiment (Fig. 1, not shown) the radiating member comprises looped tubular conductors concentrically disposed in a single plane whilst in a second embodiment (Fig. 5, not shown) the radiating members are simple conductors arranged in the form of concentrically disposed polygons. Many forms of capacitive couplings are disclosed (Figs. 2, 3, 4 and 6, not shown In some of these (Figs. 2 and 3, not shown) where the radiating members are of tubular form, capacitive coupling is provided by further tubes disposed within the radiating members. In the other main arrangement (Fig. 5, not shown) where the radiating members are simple conductors, each pair of conductors is connected through a ganged switch (Fig. 6, not shown) to either one of a pair of adjustable capacitors, thus providing the wide band characteristic. In the arrangement shown the capacitor 60 is adjusted by the motor 62 controlled from a remote operating station and one or other of the feeders 69, 70 is connected to the radiating members by the switch 67. A reflection coefficient meter 72 is provided to determine when a good impedance match is obtained.
Patent GB-221437-A (GB)
Title: Improvements in web-feeding arrangements for typewriting machines
IPC: A41F3/02
Filed: 1924-03-25
Abstract: 221,437. Fairweather, W. C., (Underwood Typewriter Co.). March 25, 1924. Web feeding and guiding arrangements; ink-ribbon mechanism. - In web-manifolding arrangements of the kind in which carbon sheets interleaved with the webs are fed therewith around the platen and then retracted, means is provided for retaining one or more of the carbon sheets in ineffective position, so that typing on the associated webs can be suspended. The Figure shows an arrangement of the kind described in Specifications 23349/14 and 166,788, and comprising a trolly 29 running on rails 28 forming part of a frame 24 secured to the rear of the paper-carriage 17, the trolly being provided with blades 33 for attaching carbon sheets 40 which are interleaved with a set of webs 38. There is now provided a second trolly 42, running on rails 45 forming part of a frame 51<a> which is superposed on the frame 24, the trolly having blades 47 for attaching carbon sheets 71 which are interleaved with a set of webs 69. The frame 51<a> has legs 52a, 53 which rest on the frame 24, and are secured by means of pivoted catches 63, 66. The legs 53 are shaped to fit over a cross-bar 39 of the frame 24, and the legs 52a have apertured feet engaging the heads of the screws 59 employed for securing the rails 28 to a cross-bar of the frame 24. The trollies 29, 42 move forward with the webs when the line-spacing mechanism is operated, and are periodically pushed backwards by means of finger-pieces 35, 75 thereon. If typing is to be effected on one of the sets of webs only, for instance the set 38, the other set 69 is withdrawn from the platen and bent backwards. The finger-pieces 35, 75 are formed on arms 36, 76 which are pivoted to brackets 34, 48 on the trollies 29, 42 and can be folded when the associated trolly is out of use. When both trollies are in use they mav be coupled by means of a sliding catch mounted on the bracket 34 and adapted to engage a pin on the bracket 48. The rails 28, 45 are provided with adjustable stops 37, 52 for limiting the movements of the trollies.
Patent GB-647283-A (GB)
Title: Improvements in or relating to the production of chocolate and cocoa products
IPC: A23G1/04
Filed: 1948-03-12
Abstract: Cocoa mass or chocolate mass in a molten condition is atomized by means of a hot air current so as to form particles not greater than 50-100m  and preferably 5-30m  in size.  Chocolate mass having a temperature higher than 28 DEG C and preferably about 60 DEG C, is atomized in hot air at, say, 80 DEG C.  Mechanical treatment may take place before atomization (e.g. a limited amount of conching) and afterwards (e.g. rolling).  Chocolate mass may be prepared by atomizing the ingredients (cocoa mass, sugar solution, milk, flavouring substances, &c.) separately and simultaneously in the same chamber.  Atomization may be followed by drying in trays, in a vacuum, in a pneumatic plant, or in a high frequency electric field. Alternatively, atomization may be carried out in two stages, with revolving atomizers.  In making cocoa products containing sugar and the like, these substances may be added during atomization of the cocoa mass, the fat content being reduced in the usual manner afterwards.  Specification 578,078 is referred to.
Patent GB-1501757-A (GB)
Title: Process and apparatus for the angular adjustment of pinions on their shafts
IPC: F16H1/28
Filed: 1975-02-24
Abstract: 1501757 Coupling pinions to shafts; change-speed gear; toothed gearing G H BIABAUD and G DASSET 24 Feb 1975 [22 Feb 1974] 7638/75 Headings F2U F2D and F2Q In drive gearing in which pinions 17 on shafts 18 mesh with a common central gear 14, the pinions are each rotatably mounted on a shaft 18, rotated by the common gear 14, and fastened to their respective shafts 18 by fluid pressure from a common source expanding a portion 41 of each shaft by means of a frusto-conical wedging member 43. The wedging member 43 is shown integral with a piston 45 and fluid pressure is supplied to a chamber 91 to act on the piston through a conduit 65, 66 from a distributer 71. The shafts 18 are held stationary during the coupling of gears 17 to shafts 18. The common central gear 14 is mounted on a shaft 11 on which the distributer 71 is rotatably mounted through a bearing 84. The members 43 are shaped to hold themselves in their gear fixing positions so that the fluid supply is removed after the gears 17 have been fixed to their shafts 18. The coupling may be released by removal of a screw 52 and supply of pressure fluid through a bore 48 to a chamber 33 (Fig. 5, not shown). The gearing is shown in a two-speed gear-box (Fig. 1), a dog clutch sleeve 5 either connecting the input shaft 11 to an output shaft 9 for direct drive or alternatively coupling a gear 8 to shaft 9 so that the drive through the three countershafts 18, through gears 14, 17, 7 and 8.
Patent GB-633333-A (GB)
Title: Improvements relating to electric current supply systems
IPC: H02P9/22
Filed: 1948-03-13
Abstract: 633,333. Electricity supply ; automatic control systems for alternators. ROTAX, Ltd., and HAMILTON, R. F. G. March 13, 1948, No. 7702. [Class 38 (iv)] Variable speed generators, with; transformer arrangements; voltage control.-A variable speed alternator a supplies a D.C. circuit e and a lower voltage D.C. circuit i. The circuit i is connected to the higher voltage A.C. supply through a step-down transformer f, g and the secondary windings q of a booster transformer, of which the primary windings r are supplied from the alternator through saturable chokes p. The alternator field is regulated by a carbon pile regulator having a control coil k responsive to the voltage of circuit e and the' saturating winding o of the chokes is controlled by a similar regulator subject to the voltage of circuit i. In a modification enabling the saturating current to fall to zero, that end of the winding o which is connected to the carbon pile is also connected through a resistance to a circuit of higher voltage than the circuit i, such as the circuit e; a rectifier may be inserted in the saturating circuit.
Patent GB-1410746-A (GB)
Title: Plant to generate power by means of the vacuum distillation of  water
IPC: C02F1/16
Filed: 1974-02-20
Abstract: 1410746 Vapour power plant M J NORTON 20 Feb 1974 7767/74 Heading F4A [Also in Division F1] In a plant to generate power through a turbine which is driven'by passing ammonia vapour therethrough, the ammonia vapour is produced by passing anhydrous liquid ammonia through at least one heat exchanger, the liquid ammonia being vaporized by passing water vapour from a vacuum distillation trough through a heat exchanger. Input water to the plant is passed through a first and second heat exchanger to the vacuum distillation trough.
Patent GB-555696-A (GB)
Title: An improved artillery projectile
IPC: F42B12/58
Filed: 1942-06-08
Abstract: 555,696. Projectiles. SILSON, F. H. June 8, 1942, No. 7776. Addition to 546,348. [Class 9 (i)] A modification of the invention of the parent Specification comprises the provision of a socket bearing 13 in an extension 11 of the barrel block 10 for the end of the retaining spring 14 of the multipin firing plunger 16, this socket communicating with passage 12. 15 for the time fuse which fires the charge at the rear of the firing plunger to cause it to be forced forwardly to fire the cartridges positioned in the rifled bores 21 of the head portion of the projectile. The firing plunger, spring, and barrel block are formed as a unitary assemblage for attachment to the head portion. In a further modification the barrel block is dispensed with and the recesses 25, 27 for the heads of the cartridges and the retaining spring respectively are formed directly in the head portion itself to which the firing plunger is directly attached by screws engaging apertures 26 in the head.
Patent GB-733554-A (GB)
Title: Improvements in coupling devices for hose and the like
IPC: F16L33/12
Filed: 1952-03-26
Abstract: 733,554. Clamp fastenings. WEINHOLD K., [trading as DRUCKLUFT-BEDARF DIPL. ING, K. WEINHOLD]. March 26, 1952 [March 28, 1951]. No. 7797/52. Class 44. [Also in Group XXVIII] A clamp for a hose coupling comprising half-sleeves 9 hinged at 5 is fastened by a toggle lever device comprising a lever 16 pivoted on one member 9 and a link 25 in the form of a leaf spring having an aperture engaging over a lug 19 on the other member 9. Alternatively the link is pivoted to the half-sleeve 9 as well as to the lever.
Patent GB-1164144-A (GB)
Title: Improvements in or relating to Simulated Fires
Inventor: BERRY RAYMOND
IPC: F21S10/04
Filed: 1967-07-12
Abstract: 1,164,144. Simulating flame effects. BERRY'S ELECTRIC MAGICOAL Ltd. 12 July, 1967, No. 7857/69. Divided out of 1,164,143. Heading F4R. A rotatable light-reflecting element for producing simulated flame effects comprises a rotatable shaft 40 having a plurality of lightreflecting vanes 38 which project from the shaft in different directions and are removably supported by a number of sleeves 42 carried by the shaft. Each vane is held by a set of three radially projecting pins 44, 46, 48 the middle one of which has a projection 50 adapted to engage a hole 52 in the vane and the outer two of which lie on the opposite side of the vane so that it is flexed into an arcuate shape. The vanes may consist of aluminium or copper foil or of synthetic plastics material having a vacuum deposited metal surface, and each vane has a slot 56 and cut away lower side portions 54 to allow light to pass through the element. An electric motor drives the element at 10 to 50 R.P.M.
Patent GB-1436033-A (GB)
Title: Roller conveyors
IPC: B65G39/09
Filed: 1974-02-21
Abstract: 1436033 Conveyer rollers FEI Inc 21 Feb 1974 [21 Feb 1973] 7927/74 Heading B8A [Also in Division F2] Roller conveyer rollers comprise bearings 20, 22 force fitted into the ends of a shell 24, each bearing having a blind socket 44, 46 which receives a spherical portion 40, 42 of a shaft 16, 18 adjustably mounted in conveyer side frames 10, 12. The bearings 20, 22 are of a self-lubricating plastics material and, with the shafts 16, 18, may be cleaned by hosing with pressurized cleaning solutions. Other parts of the conveyer may be of stainless steel or of plastics.
Patent GB-589735-A (GB)
Title: Improvements in fuel injectors for internal combustion engines
IPC: F02M61/10
Filed: 1945-03-29
Abstract: 589,735. Fuel injectors. SOC. ANON. A. CITROEN. March 29, 1945. No. 7942. Convention date, May 15, 1942. [Class 7 (iii)] In a fuel injector comprising a needle valve 1 urged against a diaphragm 7 by a spring 3, the diaphragm being loaded by a spring acting through a push-rod 11, the displacement of the diaphragm is limited at every point by an abutment member 10. The Specification as open to inspection under Sect. 91 comprises also a fuel injector having a needle valve controlled by a plug of elastic substance such as synthetic rubber, or controlled by a spring-loaded diaphragm whose deformation is not limited by an abutment. A further modification is described with the controlling diaphragm attached to the middle portion of the valve stem. This subject-matter does not appear in the Specification as accepted.