baber/WOPTO huggingface dataset:
Patent GB-368947-A (GB)
Title: Improvements in or relating to heavy-current electric switches
IPC: H01H33/16
Filed: 1931-02-14
Abstract: 368,947. Heavy-current switches. SIEMENS-SCHUCKERTWERKE A K T.- GES., Siemensstadt, Berlin. Feb. 14, 1931, No. 4731. Convention date, Feb. 15, 1930. [Class 38 (v).] Fluid-actuation; pneumatic blow-outs ; arcrupturing devices.-Circuit is opened by forcing an electrolytic switch liquid under pressure between the electrodes to cause relative movement between them, water (with or without added substances) being a suitable liquid. An increasing resistance is thus interposed in the circuit prior to the final break. In a simple form, liquid is forced between two electrodes slidable in a cylinder, to move them apart. In another form, a grid-like fixed electrode is located between a movable consistent electrode and a piston-like member, the latter being moved to force the liquid through the grid and so move the movable electrode. A development of the latter form is shown in Fig. 3 in the closed position. When the piston 21 is raised, it lifts the liquid-level 22 to trap gas in the space 26 and lift the part 28 so that the main movable electrode 24 leaves the fixed electrode 23. When the stop 29 arrests this movement, the part 31 and small electrode 25 are forced up the small cylinder 27 to make a further break, this movement being in turn arrested at the stop 32. Circuit is finally broken between the pin 33 and the contact 34 on the part 31. In the form shown in Fig. 5, one electrode 44 is a body of mercury above which is the liquid 40. The valve 39 is opened to admit air under pressure and then the valve 41 is opened, the mercury acquiring a certain velocity before the level 38 thereof leaves the fixed electrodes 37. By tapering the insulating vessel 42 the cross section of liquid 40 decreases with the switching- off time. The electrodes may, alternatively, be of a spongy material, or of powder or shot, and the liquid may be moved by pressure of its own vapour which pressure may be currentresponsive and may therefore depend for its magnitude on the current to be interrupted. The Specification as open to inspection under Sect. 91 (3) (a) states also that a circuit may be opened by separating contacts in a liquid flowing either along, or normal to, the direction of separation. This subject-matter does not appear in the Specification as accepted.
Patent GB-683144-A (GB)
Title: A new or improved method of, and apparatus for die casting metals
IPC: B22D17/04
Filed: 1950-02-24
Abstract: 683,144. Casting-machines. SADLER, A. L. (Ajax Engineering Corporation). Feb. 24, 1950, No. 4759/50. Class 83 (i). In a method of die-casting, molten metal is maintained between predetermined upper and lower levels in a holding furnace and flows freely through an open heated refractory trough into a pressure chamber from which it is ejected into the mould. Molten metal from a melting furnace 12 passes into a chamber 28 by way of a trough 11 of refractory material provided with a cover 21 which includes an electric heater 19 enclosed by a stainless steel sheet member 23. From the end of the trough the metal passes through two bores 39 into a chamber 32 having a passage 34 extending upwardly to a nozzle 37. The level of metal in the trough is kept between the limits 16, 17 and preferably at the level of the entrance to the nozzle. The upper part of the chamber 32 contains a piston 42 which on moving downwards closes the bores 39 and forces metal from the chamber and through the nozzle into the mould or die 43. An electric induction heater 47 in the form of a tube of rectangular section encloses the top, bottom and sides of the chamber 28, while the end is covered by an insulating layer 46. Another induction heater 48 surrounds the nozzle 47. In a modified form, the chamber 28 is inclined.
Patent GB-154822-A (GB)
Title: Improvements in internal combustion engines
IPC: F02N3/04
Filed: 1920-02-17
Abstract: 154,822. Laguesse, F. Feb. 17, 1920. Starting.-Consists of a compact combination of driving and starting gear particularly adapted for motor. cycles. The spindle 12 of the magneto is driven from the crank-shaft 1 through two intermediate pinions 15, 3, of which the pinion 3 belongs to a two-speed gear; and a kick-starter lever 18 is mounted about the axis of the crank shaft 1 and is geared by a sector 17 to a pinion 19 which is connected by a ratchet clutch 20 to the pinion 3 of the two-speed gear. This gear comprises the pinion 3, loose on a countershaft 4 and in mesh with a pinion 2 keyed to the crank-shaft, and a pinion 6 of different diameter, which rotates with the countershaft. but can slide along it either to be connected by a dog clutch 8, 9 to the pinion 3, or to be put in mesh with another pinion 7 keyed to the crankshaft. The pinion 6 is displaced by means of a fork 10 slidable on the shaft 11 of the pinion 15.
Patent GB-588521-A (GB)
Title: Improvements in or relating to automatic control systems for air compression plants
IPC: F04B49/22
Filed: 1945-02-26
Abstract: 588,521. Compressors, regulating and controlling. BRISTOL PNEUMATIC TOOLS, Ltd., and SLADE, L. W. Feb. 26, 1945, No. 4789. [Class 8 (i)] A compressor system comprises a compressor, a control means for automatically starting and stopping the compressor, a second control means for automatically unloading the compressor, both control means being actuated in accordance with the pressure in the system, and means for selecting one or other of the control means at will. The first control means comprises a valve 10 which when connected by a three-way cock 9 to a reservoir 7 and the compressor 1 operates at predetermined pressures to open or close contacts 4 to stop or start an electric motor 2. When the cock 9 which serves as the selecting means is turned to its other position a second control valve 11 allows access of supply pressure to valve 12 which closes the compressor intake 5 and thus affords unloading of the compressor without stopping the motor. Alternatively the compressor may be unloaded by holding the normal suction valve open, The cock 9 has a bleeder to drain the control valves.
Patent GB-1048224-A (GB)
Title: Device for cooling gases in plant using vacuum containers and steam injectors
IPC: F28C3/06
Filed: 1964-02-05
Abstract: 1,048,224. Washing gases. STANDARDMESSO DUISBURG GESELLSCHAFT FœR CHEMIETECHNIK m.b.H. Feb. 5, 1964 [April. 25, 1963], No. 4832/64. Heading B1R. A gas in flowing from a chamber 1 to a steam ejector (not shown) is cooled in a chamber 3 by water sprays 5 arranged on the periphery of the chamber to condense out metallic vapours which are removed through an outlet 9. Water is supplied to the spray nozzle from a reservoir 7 through pipes 6 containing a valve 11 which is closed when the steam ejector is inoperative.
Patent GB-826894-A (GB)
Title: Improvements in or relating to methods for the production of metallic-ceramic materials
IPC: C22C1/10
Filed: 1958-02-14
Abstract: A mixture of oxides, or substances capable of forming oxides under ceramic burning, comprising a difficultly reducible oxide and an easily reducible oxide in relation to a particular reducing agent is subjected to a ceramic burning under oxidizing conditions to produce an exclusively oxidic product, and at least a part of the easily reducible metallic oxide is reduced to metal in solid state by subjecting the oxidic product to the actioon of the reducing agent. The oxide-forming substances specified are carbonates, sulphates, hydroxides, hydrates, and sulphides.  The reduction may be effected with carbon monoxide or hydrogen, or solid reducing agents such as carbon or a metal.  According to an example, a powdered, briquetted mixture consisting of 5% CaO and 95% Fe2O3 was treated for 24 hours in an atmosphere of oxygen at 1200C DEG ., the treated briquettes appeared to be composed of 60% Fe2O3 and 40% CaO.Fe2O3.  The briquettes were then reduced at 1000 DEG C. for 5 hours in an atmosphere of pure carbon monoxide.  On X-ray investigation the reduced briquettes were found to comprise the phases Fe and CaO.
Patent GB-101513-A (GB)
Title: Improvements in or relating to Flying-machine Fuselages.
Inventor: SYBERG NICOLAS LAMBERT
IPC: B64D27/02
Filed: 1916-04-03
Abstract: 101,513. Syberg, N. L. April 3, 1916. Aerial machines without aerostats; cars and cabins; propelling; steering. - A flying-machine fuselage is composed of forward and after parts connected together by a hollow member serving as a bearing for the propeller and for the passage of rudder-actuating or other mechanism Fig. 1 shows a fuselage comprising parts F, A connected by a member C, which carries the propeller P and affords a passage for the steering- cables c. The member C is bolted at f, Fig. 2, to the part F, and is connected by a screwed sleeve SL and key K to the part A. The propeller hub H is mounted on ball races T separated by a sleeve S, and is held in position by nuts N, N<1>. The steering-cables c are provided with brass sheaths B spaced by distance-pieces D. The engine-shaft is co-axial with the centre line E-E of the member C in a modification, the engine shaft is arranged parallel to the line E-E Specification 29,401/12 is referred to.
Patent GB-1417098-A (GB)
Title: Tensioning roller for toothed belt drives
IPC: F16H7/08
Filed: 1973-01-31
Abstract: 1417098 Bearings; belt tensioning devices SKF INDUSTRIAL TRADING & DEVELOPMENT CO BV 31 Jan 1973 [1 Feb 1972] 4923/73 Headings F2A and F2Q A roller, e.g. for tensioning toothed belt drives, comprises a rolling bearing 1, and a sheet metal member 6 extending around the circumference of the radially outer surface of the outer race of the bearing, and having a first, radially inner limb 8 in abutment with said surface and extending axially thereon, a second limb parallel to and radially outwardly of the first limb and an end wall extending from one end of one limb to the adjacent end of the other limb, therebeing means 11 to locate the member on the outer race. The limb 8 may be provided with tongues 9, so that a plastics ring 10, which is injected after the member 6 has been fitted to the outer race, cannot be released from the member 6. A bush 4 disposed in the inner race bore is formed with an eccentric bore 12 to receive a spindle, and with an axial extension having a hexagonal cross-section so that the belt tension can be adjusted.
Patent GB-1531444-A (GB)
Title: Apparatus for repeated placement of explosive charges in an array
IPC: E02F5/30
Filed: 1975-10-20
Abstract: 1531444 Load handling and engaging devices JET RESEARCH CENTER Inc 20 Oct 1975 [11 Nov 1974] 04929/78 Divided out of 1531441 Heading B8H  The whole of the subject matter of the divided Specification is included in the original Specification but the claims are directed to a frame apparatus for placement of explosive charges, the frame being suspended horizontally.
Patent GB-211895-A (GB)
Title: Process of splitting up ores and metallurgical products
IPC: C22B15/00
Filed: 1924-02-26
Abstract: Relates to the treatment of ores, concentrates, smelter products, metals, alloys, and other metalliferous materials, particularly sulphides, selenides, tellurides, arsenides, antimonides, sulpho-salts, matts, speisse, phosphides, carbides, &c., for the production of separate constituents or ingredients in crystalline or other form, and comprises generally the treatment of the materials, usually in molten state, with a reagent which may be, for example, a sulphide, with the result that on cooling of the mass, certain constituents crystallize or separate out, and on solidification are bound together by the material having the lowest melting point; the whole mass is then reduced to powder by treatment with agents such as air, water, carbon dioxide, or sulphides of alkaline earths or of aluminium or chromium, the mixture being afterwards separated by mechanical, magnetic, electric, wet, or other means.  The rate of cooling may be regulated to obtain different constituents in larger or smaller crystals.  Oxide ores may be treated according to this process if they are first transformed to sulphides or the like.  In some cases a material such as sodium chloride may be added. Molybdenum sulphide may be purified by treatment with iron sulphide and sodium sulphide, impurities such as copper and bismuth sulphides being separated.  Iron pyrites containing nickel and copper may be melted with materials which form sodium sulphide, successive products being obtained each of which may be separated by magnetic or other means.  In some cases the temperature need not be raised to that of melting, for example in freeing iron pyrites from copper.  In some cases a sulphide may be added electrolytically by the method described in Specification 211,883.  The Specification as open to inspection under Sect. 91 (3) (a) refers also to the production of arsenic sulphide by treating a molten sulphide with a molten arsenide.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1523571-A (GB)
Title: Production of beta-alumina ceramic articles
IPC: C04B35/645
Filed: 1977-02-07
Abstract: 1523571 Beta-alumina CHLORIDE SILENT POWER Ltd 7 Feb 1977 05007/77 Addition to 1521887 Heading C1J A #-alumina ceramic article, formed by sintering a suitable green body, is iso-statically pressurized at 1200 C.-1550 C. above 5000 p.s.i.; the body is then cooled under pressure to below 1200 C., after which the pressure is released. The product has increased mechanical strength and durability.
Patent GB-110299-A (GB)
Title: Improvements relating to Pivots for Casements, Window Sashes and Fan-lights.
Inventor: HALL GEORGE
IPC: E05D7/08
Filed: 1917-04-10
Abstract: 110,299. Hall, G. April 10, 1917. Pivot adjustments.-Relates to pivots for casements, window sashes, and fan-lights of the kind provided with two plates, one of which is secured to the sash and the other to the member to which the sash is to be locked, the plates having radial locking-teeth disposed around the pivot. According to the invention, one of the plates b is fixed to a spring-pressed loose slip q whereby the loose slip is moved from and towards the sash p when the sash is moved angularly step by step. The loose slip q is retained in position in the fixed frame r by a projection t and a bead u. The pivot.bolt d passes through the spring j and through the plates b, a, the plate a, which is attached to the sash p, being held on the bolt by a split-pin k or the like passed through the bolt and half through a boss m on the back of the plate a. Specification 13222/07 is referred to.
Patent GB-795367-A (GB)
Title: Washing apparatus
Inventor: GUINARD PAUL
IPC: B05B3/06
Filed: 1956-02-17
Abstract: 795,367. Spray-producers. ETABLISSEMENTS POMPES GUINARD. Feb. 17, 1956, No. 5065/56. Class 69 (3). [Also in Group XXXIV] A device for washing the inner faces of a closed tank &c. comprises reaction jet nozzles 1, 1<SP>1</SP> which extend laterally from a feed tube 2 and rotate therewith about a horizontal axis 13, and a gear wheel 14 secured to the tube 2 engages a gear wheel 15 fixed to a stationary bifurcated water feed pipe 6 so that the nozzles and tube rotate also about a vertical axis 16. The tube 2 is mounted in bearings 4, 5 in a tubular body 3 which rotates in bearings 7, 8 on the pipe 6. The ends of the tube 2 and body 3 are closed and water is delivered to the nozzles from the pipe 6 and via slots 12 and 11 in the tube and body respectively. A plug 9 integral with a pinion 27 closes the rear end of the tube 2 and, in operation, the pinion drives through a gear train 26, 25 and 24 a brake pump 17 comprising pinions 18, 19, an oil tank 32, and a control device for varying the braking effect. The pinion 18 is attached to a shaft 23 carrying the gear 24, and oil is drawn from the tank through an inlet 34 and is returned thereto through passages 35, 38, an orifice 37<SP>1</SP> and a passage 35<SP>1</SP>. A nozzle 36 contains the orifice 371 together with several differently sized orifices spaced circumferentially around it. Any one of those orifices may be brought into operation by loosening nuts 40, 41 and turning the nozzle stem 39.
Patent GB-369346-A (GB)
Title: Improvements in electric fuses
IPC: H01H85/08
Filed: 1931-02-18
Abstract: 369,346. Fusible cut-outs. COX, C. W., 15, Hargreaves Road, Sefton Park, Liverpool. Feb. 18, 1931, No. 5088. [Class 38 (i).] A fusible element is made in three parts, two end parts a<1> and a central connecting link a2 connected to the end parts by solder a<3> the end parts having less current carrying capacity than the link a2. In a modification two such links are provided. The element or elements may be enclosed in a chamber C consisting of a cylinder c<1> with non-combustible end-blocks c<4>. The ends of the elements are secured beneath screws c<7> in a terminal plate c<6>. The bearers D of the contacts d' are secured to the plates c<6> by bolts d<3>. Specifications 344,892 and 357,691 are referred to.
Patent GB-308781-A (GB)
Title: Improvements in and connected with detonators and the like
IPC: C06B25/04
Filed: 1929-02-15
Abstract: 308,781. Turek, O. March 28, 1928, [Convention date]. Addition to 298,629, [Class 9 (ii), Torpedoes &c.]. Blasting detonators.-A detonator is filled with highly compressed 2, 4, 6-trinitro 1, 3, 5-triazidobenzene, or trinitrotoluene or tetryl, and on this is placed a small priming charge of 2, 4, 6- trinitro. 1, 3, 5-triazidobenzene rammed at a pressure not exceeding 300 kg. cm<2>. This priming may be covered with a perforated cap.
Patent GB-766335-A (GB)
Title: Manufacture of ª -(phenacetylamino)-ª -benzoyl-acetic acid benzyl ester
Inventor: EHRHART GUSTAV
IPC: C07C233/45
Filed: 1954-02-22
Abstract: The invention comprises a -(phenylacetylamino)-a -benzoyl-acetic acid benzyl ester and the preparation thereof by subjecting a -(phenacetylamino) - a  - benzoyl - acetoacetic acid benzyl ester to hydrolysis in an acid medium.  In the example the hydrolysis is effected by boiling the starting material under reflux with methanol and hydrochloric acid, the desired ester is precipitated by adding water to the hydrolysis product, and is recrystallized from isopropyl alcohol. a -Phenacetylaminoacetoacetic acid benzyl ester is obtained by reacting benzoyl chloride with a -phenacetylaminoacetoacetic acid benzyl ester in the presence of calcium hydroxide.
Patent GB-968166-A (GB)
Title: Improvements in or relating to inlet ducts for vtol aircraft
IPC: B64C29/00
Filed: 1963-02-08
Abstract: 968,166. VTOL aircraft. GENERAL ELECTRIC CO. Feb. 8, 1963 [Feb. 12, 1962], No. 5186/63. Heading B7G. A VTOL aircraft lifting fan duet inlet has a member 16 on the duct axis for supporting the fan 15 and supported by struts 17 parallel with the direction of horizontal flight, an annular guide vane 20 spaced from the curved part 22 of the inlet so as to define a substantially constant area annular passage therewith, and a plurality of spaced aerofoil vanes 27 disposed across the duct inlet transversely to the direction of horizontal flight. Fig. 1 is a plan view and Fig. 2 a fore-and-aft vertical section through a ducted fan installation in a wing, the invention being equally applicable to a fuselage. The annular vane 20 prevents flow breakaway at the curved part 22 (which is highly curved in a thin wing) when the fan is operating at substantial forward airspeed. The ratio of the chord of the vane to the radial dimension of the annular passage it defines should beat least one and a half. Further part annular vanes 21 may be added at the forward part of the inlet. The vanes 27 distribute flow evenly over the fan during forward motion, and their chord should not be less than their spacing. The radially inner parts of the outer vanes are made radial as at 28, this not being necessary on the inner vanes. Surfaces 18 are pivotable to direct the fan exhaust. The fan is driven by gas supplied to tip turbine blades in known manner.
Patent GB-525224-A (GB)
Title: Improvements in or relating to the steering mechanism and change-speed gear of motordriven road and water-borne vehicles
IPC: B60W10/10
Filed: 1939-02-16
Abstract: 525,224. Controlling motor vehicles. GRIST, G. Feb. 16, 1939, No. 5205. [Class 79 (v)] A hand lever 32 movable in two perpendicular planes to control the steering and change-speed gear of a vehicle or boat is pivotally carried on a shaft 16 acting on one mechanism and is connected to a sleeve 28 which slides on the shaft 16 and is movable axially by the hand lever to control the other mechanism. The hand lever 32 is pivoted in a fork 26 of a steering shaft 16 so that movement of the lever in a horizontal plane rotates the shaft and steers the vehicle by means of an arm 20 on the shaft and a link 22 connected to.the steering wheels (not shown). The lever is connected by a link 34 to a sleeve 28 slidable and rotatable on the shaft 16, so that movement of the lever in a vertical plane slides the sleeve 28 and controls the change-speed gear 52 by means of a lever 40, 42, 44, pins 38 on the lever arm 40 engaging in a groove in the sleeve formed by collars 36. The change-speed gear may be of the chain and sprocket type as described in Specification 524,855, [Group XXIV]. The rotary movement of the shaft 16 may control the change-speed gear and the vertical movement of the sleeve 28 may control the steering gear.
Patent GB-574383-A (GB)
Title: Improvements in electric discharge devices having coated cathodes supported intermediately between their ends
IPC: H01J1/26
Filed: 1943-04-02
Abstract: 574,383. Discharge apparatus. M-O VALVE CO., Ltd., KLEPP, G. F., and SMYTH, J. A. April 2, 1943, No. 5294. [Class 39 (i)] In discharge devices comprising a cathode consisting of a tubular core coated with an activating layer, the core is substantially circular for the greater part of its length but where it passes through a hole in an insulating supporting member it is deformed over a length 3 so that it projects in at least two places appreciably beyond the original cross-section. These projections engage with the hole in the supporting member. A flange 4 may be upset at the end of length 3 to engage with the support member. The part 1 of the cathode may form part of a double diode while the part 2 forms part of a triode.
Patent GB-1340820-A (GB)
Title: Determination of the proportion of hydrogen in a mixture with  other gaseous materials
IPC: G01N33/20
Filed: 1972-02-04
Abstract: 1340820 Determining gas concentration electrically BALZERS PATENT-UND BETEILIGUNGS-AG 4 Feb 1972 [11 Feb 1971] 5294/72 Heading G1N The concentration of hydrogen in a gas mixture is determined by measuring its thermal conductivity in a measuring chamber 8 (Fig. 1) in the presence of an auxiliary gas obtained from a container 11 and fed into a pre-chamber 14 until the density is such that a predetermined thermal conductivity is obtained in chamber 8 or 14. The difference between the two thermal conductivities, sensed by Pirani gauges or a heated thermocouple 21, 22, is then indicative of the hydrogen concentration and is shown on a meter 26. The gas flow valves may be controlled automatically by unit 25. The auxiliary gas may be carbon monoxide, nitrogen or air, separately or as a mixture. The test gas mixture may be obtained from a sample 3 heated in a vacuum furnace 1.
Patent GB-120512-A (GB)
Title: Improvements in Pipe Expansion Joints.
Inventor: JAMIESON DUNCAN MCGREGOR
IPC: F16L27/12
Filed: 1918-03-26
Abstract: 120,512. Jamieson, D. M. March 26, 1918. Stuffing-box joints.-An expansion joint also adapted to give a limited amount of lateral play comprises two members A, B. Packing-rings G contained in rings H, J fit on the spigot member B and may be recessed at L for tightening springs. End rings F are provided and are machined to form ball joints with a shoulder on the member A and a cover plate C which is secured by bolts E. The pipes N, Q are bolted or otherwise secured to the members A, B.