baber/WOPTO huggingface dataset:
Patent GB-289524-A (GB)
Title: Improvements in radio broadcasting systems
IPC: H04H20/67
Filed: 1927-01-26
Abstract: 289,524. Standard Telephones & Cables, Ltd., (Western Electric Co., Inc.). Jan. 26,1927. Line compensation devices. - In a system for feeding several broadcasting stations from a central or control station, phase-changing or delay networks are located in the relay and synchronizing lines, so as to compensate for the different lengths involved. In this way signal waves can be impressed upon two separated stations substantially simultaneously, in time, so that " echo " is eliminated, and in phase, whereby fading is avoided. A phase-correcting device also may be arranged to effect automatic compensation for phase-change in the line caused by resistance variation. As shown in Fig. 1. the signal currents from a microphone 10 in studio S pass to a nearby station C over the line L, LC, and a delay-circuit Dc; to a distant station A over line L, repeater Rs, and delay circuit Da ; and to the most distant station B over the repeaters Rs, R<1>s, but no delay circuit. In this arrangement the synchronizing currents are transmitted over a separate line from the source F, though they may be superposed on a line which also carries the signal wave. The synchronizing connection to station C comprises a frequency step-up device HGc; that to station A comprises an automatic phase-corrector Pa, as shown in Fig. 3, and a frequency changer HGa; whilst the line to station B comprises a repeater R<1>f, and a phase corrector Pb, and frequencychanger HGb, as before. The automatic phasecorrector, Fig. 3, comprises two inductance coils L1, L2 shunted respectively across a condenser C and resistance R<1> bridged across the main line. The coils L1. L2 are differentially coupled to a third coil L3 in the output line in such a way that as the coupling between L3 and say L1 increases that between L3 and L2 decreases. The degree of coupling is automatically controlled by a motor 26, the operation of which is in turn controlLed on the " hunting " principle by a circuit comprising a Wheatstone bridge arrangement. One arm of the bridge includes the resistance of the line 34, another arm the variable resistance R2, and the remaining arms have equal resistances R3, R4 shunted by the coil 36 of a relay 37. Changes in the resistance of line 34 determine the direction of current flowing through the coil 36, and in consequenee the setting of the contact 31 of the relay circuit, thus governing the direction of rotation of the motor 26.
Patent GB-738183-A (GB)
Title: Improvements relating to chairs or other seating apparatus
Inventor: ABRAHAM WERNER EMANUEL
IPC: A47C7/18
Filed: 1953-01-28
Abstract: 738,183. Seats. STOOLETTE, Ltd. Jan. 27, 1954 [Jan. 28, 1953], No. 2394/53. Classes 52 (2) and 52 (4). A chair has a non-resilient base member 10 of laminated wood forming a back-rest support 11 and seating portion 12, a cushion 16 of foam rubber adhesively secured thereto and legs secured to the base by bolts 25 and captive nuts. Arms having adhesively secured cushions 29 may be attached to the base 10 by elements 31.
Patent GB-538623-A (GB)
Title: Improvements in or relating to ultra high frequency electron discharge devices using resonators
IPC: H01Q17/00
Filed: 1940-02-08
Abstract: 538,623. Electron oscillators. STANDARD TELEPHONES & CABLES, Ltd., and GIBSON, W. T. Feb. 8, 1940, No. 2411. [Class 39 (i)] In an ultra-high frequency oscillator as described in Specification 537,490 wherein the electron stream is velocity modulated in a single resonator which comprises co-axial tubes 1, 2 closed at their ends, the cathode 6 is carried in a copper extension 5 and the anode may be in a similar extension 4; or the extension or outer tube may be the anode. A metal screen 11 behind the cathode prevents emission to the boss 5 and a control grid 12 may be used for modulation. Fins 7 mounted in the slots in the resonator tubes allow for adjustment of the gaps. Power may be taken out by a line passing through a copper to glass seal 3. The cathode assembly is supported by a'glass stem arranged at the side so that it does not interfere with the action of magnet poles if these are used. Cooling ribs 8, 9 are provided; these may be arranged longitudinally of the resonator and air forced through. A sealing-off tube 10 is provided.
Patent GB-251912-A (GB)
Title: Improvements in or relating to apparatus for use in taking cinematograph views
IPC: G03B15/12
Filed: 1925-03-03
Abstract: 251,912. Withers, J. S., (.47.<.-GM. f³r Spiegeltechnik). March 3, 1925. Reflector systems.-In apparatus for producing ordinary or kinematograph pictures according to Specification 230,454 in which an opaque or semitransparent mirror 3 is placed in front of the camera 4 in order to produce an image of one or more objects 1, 2 in the camera, and also in a finder disposed to one side of the camera, the finder comprises either (1) a frame 11, Fig. 1, and sight aperture 14 carried by a rod 13 adjustably mounted on a tripod 12 which supports the mirror 3; or (2) a mirror 16, Fig. 2, which, together with the mirror 3 and a sight .aperture 19, is mounted on a rod 18 so attached to the camera that it may be turned to swing the mirror 3 out of the path of the rays entering the objective.
Patent GB-524272-A (GB)
Title: Improvements in and relating to the electrolytic polishing of metals, particularly steel
IPC: C25F3/24
Filed: 1939-01-25
Abstract: 524,272. Electrolytic polishing of metals. BREVETS AERO-MECANIQUES SOC. ANON. Jan. 25, 1939. No. 2580. Convention date, Feb. 10, 1938. [Class 41] Metals and alloys, particularly steel are polished by anodic treatment in a bath of pyrophosphoric acid in a solvent such as alcohol which maintains the stability of the acid. If the steel becomes passive, this condition is removed by touching it with a copper rod. A roller 4, Fig. 2 to be polished is supported in a bath on a glass tripod 5, an electrode 3 passing through a glass tube 7 rests upon it, and the cathode is formed by the vessel 1 and a rod 6 rising centrally in it.
Patent GB-1013447-A (GB)
Title: Photographic developers
Inventor: RAMSAY DAVID WILLIAM CRIGHTON
IPC: G03C5/30
Filed: 1963-01-21
Abstract: 2,21 - Hydrazo - pyridine - 1,11 - dioxide is prepared by hydrogenating 2-nitropyridine-1-oxide in alcohol with a palladium/strontium carbonate catalyst.
Patent GB-306128-A (GB)
IPC: F16L13/04
Filed: 1929-01-26
Abstract: 306,128. Mannesmannrohren-Werke. Feb. 17, 1928, [Convention date]. Joints formed by welding.-A welded spigot- and-socket tube is formed by bending the edge of the socket c over a wedge-shaped ring d, which is provided on the spigot member a, and welding it at e to the said spigot. The ring d, which permits non-axial alignment of the tubes and also relieves the welded seam of strain, is formed of two or more parts, and is retained on the spigot by a flange b, Fig. 1, or by welding, Fig. 2.
Patent GB-1157765-A (GB)
Title: Photographic Camera having Retractable Objective Lens
Inventor: PETERSON DEAN MCCORMACK
IPC: G03B17/42
Filed: 1968-01-18
Abstract: 1,157,765. Cameras with retractable lenses. EASTMAN KODAK CO. Jan. 18, 1968 [Jan. 18, 1967], No.2818/68. Heading G2A. In a camera having a lens housing which is movable between an extended (operative) position and a retracted (inoperative) position, this movement also causes the shutter release trigger to move from a corresponding extended position to a corresponding retracted position without actuating the shutter release. When the lens housing (16, Fig. 1 not shown) is extended into its operative position, the release trigger (formed by a fingerplate 24 at the end of a slide 17) is in a raised position, relative to the camera wall 23, as shown in Fig. 2. Attached to the slide 17 by a pivot 19 is a latch member 18. A tension spring 25, secured at one end to a fixed point 27, is attached at its other end to a pin 26 on latch 18, and so urges both latch and slide upwards. At the same time, it causes an ear 29 at the top of latch 18 to enter into an aperture 31 in the slide. In this position also, a lip 33 on the latch is positioned above a lever 34 which actuates the shutter. Thus when the trigger in the position of Fig. 2 is pressed downwards (into the position of Fig. 4, not shown), lip 33 moves lever 34 downwards to effect the shutter release. A trigger blocking device 36 can prevent slide 17 from being depressed if a nose portion 43 thereof is pivoted into the aperture 31. This could happen if, for example, the device 36 formed part of a double exposure prevention system, or a light evaluating system which had assessed the illumination as insufficient. When the lens housing is retracted, the trigger 17 is also retracted downwards (into the position of Fig. 3, not shown) without actuating the shutter release. A flexible cable 53, attached to an arm 56 of the latch 18, is pulled downwards by means actuated by the retracting movement of the housing. The first effect of this pull is to pivot the latch counter-clockwise. This brings the lip 33 out of alignment with lever 34 (so that depression of slide 17 will not now engage the shutter release lever 34). Also, the ear 29 on the latch will push the nose 43 of blocking lever 36 out of the aperture 31, if it has been engaged therein, so ensuring that slide 17 is unblocked and free to move. Further pull on cable 53 now causes latch and slide to move downwards into the retracted position of Fig. 4.
Patent GB-724261-A (GB)
Title: Improvements in and relating to ejection seats for aircraft
IPC: B64D25/10
Filed: 1952-09-02
Abstract: 724,261. Ejection seats for aircraft. MARTIN, J., and MARTIN-BAKER AIRCRAFT CO., Ltd. Sept. 2, 1952; No. 2936/54. Divided out of 723,974. Class 4. In an ejection seat for aircraft having retractable thigh guards, each guard comprises a tube encased within the side of the seat pan, a spring-loaded latch engaging a lip or flange on the lower end of the tube to hold the latter in locked position, and automatically or manually operated means to withdraw the latch from the lip thereby to release the' tube which is then forced upwards to its operative position by spring means located within the tube. Encased within each side wall 1 of the seat pan 2 is an oval section tube 3 which encloses springs 5 located within telescopic tubes 6. The lower end of the tube 3 is flanged at 4 for engagement with a spring-biased toggle catch 9 mounted on a cross shaft 8, the shaft having an arm 11 for automatic operation of the toggles in conjunction with the hood jettison control as described in Specification 679,063. Manual operation is provided by a pivoted lever 12 connected to the toggle 9 by a link 13 and a buffer is provided comprising a spring 15 and a collar 16 against which the flange 4 abuts when the thigh guard 3 is in the extended position, shown by chaindotted lines.
Patent GB-416893-A (GB)
Title: Improvements in packings for cigarettes or similarly shaped articles
IPC: B65D85/10
Filed: 1934-01-29
Abstract: 416,893. Packing for cigarettes &c. UNIVERSALLE CIGARETTENMASCHINEN-FABRIK J. C. MULLER & CO., 48, Zwickauerstrasse, Dresden, Germany. Jan. 29, 1934, No. 2969. Convention date, Nov. 16, 1933. [Classes 18 and 94 (i).] A packing for cigarettes and similarly-shaped articles comprises a carton and a covering for the cigarettes &c. therein, the covering being formed from a rectangular blank of paper &c. provided near one or both of its end margins with a line produced by stamping, scoring, or perforating so that, after the carton is opened, a strip may be removed from one or both sides of the end of the covering so as to expose the cigarettes &c. for withdrawal. As shown one end 8 of the covering 4 is provided with a tear-off line 7 and the ends 161 of the side flaps 16 of the drawer 2 of the carton are scored so that they may be bent outwards to facilitate correct separation of the covering along the line 7.
Patent GB-1107631-A (GB)
Title: Improvements relating to towbar connections
Inventor: TOWNSEND DAVID JAMES
IPC: B60D1/00
Filed: 1965-01-23
Abstract: 1,107,631. Towbar connections. AUTOSET (PRODUCTION) Ltd. 24 Jan., 1966 [23 Jan., 1965], No. 3083/65. Heading B7T. A towbar connection 14 for connecting a towing vehicle 10, Fig. 1 (not shown), to one trailer 11 of a train of trailers comprises a male member 16 on the towbar 13 of the trailer 11 and a female member 15 on the towbar 12 of the vehicle 10, and a pair of inwardly spring- loaded spindles 19 journalled in the socketwall and fast with detents 20 engageable in an annular groove 18 in the male member 16 for locking the members 15, 16 together, operating levers 23 being provided on the spindles 19 for rotating each detent 20 to present either a flat face or a bevelled face 25 of the detent 20 to that face of the. groove 18 which abuts the detent during towing, so that either the members are locked together or disengaged by resulting axial movement of the detent. Each of the trailers of the train may be disconnected from the driving cab by moving a lever which displaces cables, or rods and levers connected to the operating levers 23. Detents 20 are spring-loaded for axial rotation into the coupling position.
Patent GB-885745-A (GB)
Title: Fitment for vacuum cleaners
IPC: A47L7/04
Filed: 1959-01-29
Abstract: 885,745. Suction cleaners. WHITEHEAD, T. L. March, 25, 1960 [Jan. 29, 1959], No. 3188/59. Class 8(1) [Also in Group XI] A fitting for internal or external connection to a suction cleaner, comprising a mounting 1 carrying an electrical resistance heater 3 to heat the exhaust air from the blower, and a thermostatic switching unit 6 in close proximity to the heater 3 whereby the switching unit 6 will interrupt the electrical supply to heater 3 in the event of an excessive rise of temperature, the heater being connected in circuit with the blower meter such that the heater 6 will only be operative when the blower-motor is operative, the fitting also having a switch 8 to manually interrupt the heater supply.
Patent GB-699735-A (GB)
Title: Means for the uniform distribution of gas over individual catalyst tubes
IPC: B01J8/06
Filed: 1950-02-08
Abstract: <PICT:0699735/III/1> Means for distributing a gas uniformly over catalyst contained in tubes in a reactor, especially for the hydrogenation of carbon monoxide, comprises a sealing cap 4 mounted at the end of each of the tubes 1, each sealing cap having one or more small openings 6 and providing a resistance to the flow of gas at least equal to the resistance of the catalyst in the tube.  The cap may be made of metal and have a portion which bears resiliently against the inside of the tube.  Washers of asbestos, ceramic material, or glass wool, or seals of tar or wax, may be interposed between the cap and the tube.  The caps may also be made of sintered or fritted porous material.
Patent GB-1014605-A (GB)
Title: Improvements relating to a method of coating textile fabrics
Inventor: WATSON JOHN WILLIAM
IPC: B32B27/00
Filed: 1962-01-30
Abstract: A textile fabric coated with a polyurethane composition is produced by applying a layer of a curable solvent-free liquid polyurethane composition to a supporting surface, partially curing the composition, applying the textile fabric to the partially cured film, completing the cure of the film, and releasing the cured film adhered to the fabric from the supporting surface.  The textile fabric may be applied to one surface of the partially cured film and the assembly passed between rollers.  The liquid polyurethane composition may be a mixture of an organic compound, examples of which are given, containing at least two groups each containing an active hydrogen atom and an organic compound, examples of which are given, containing at least two terminal or substantially-terminal groups, each containing an -NCX radical wherein X represents an atom of oxygen or sulphur. The liquid polyurethane composition may be based on a liquid prepolymer obtained by reacting an organic compound containing at least two groups, each containing an active hydrogen atom, with an organic compound containing at least two terminal or substantially-terminal groups, each containing an -NCX radical wherein X represents an atom of oxygen or sulphur, to give a reaction product containing at least two terminal or substantially-terminal -NCX groups.  The liquid polyurethane composition may be extruded continuously on to a conveyer belt. The supporting surface may comprise paper coated with a layer of wax having a melting point greater than the temperature at which curing of the polyurethane composition is effected, stainless steel, polytetrafluoroethylene, a polymer or copolymer of vinyl chloride, or a polyolefine e.g. polyethylene or polypropylene, which may be mixed with wax having a melting point not less than the temperature at which curing of the polyurethane composition is effected.  The liquid polyurethane may be heated, e.g. by infra-red heaters, to a temperature up to 150  DEG C., e.g. 80-120  DEG C., to effect partial curing and subsequently to complete the cure, or may be partially cured and fully cured at room temperature.  The coated fabric may be removed from the supporting surface by heating the surface to cause the wax to melt to facilitate removal of the fabric.  The textile fabric may be of natural or synthetic textile fabrics such as wool, cotton, sisal, rayon, nylon and "Terylene" (Registered Trade Mark), and may be woven, knitted or weftless.
Patent GB-624607-A (GB)
Title: Improvements in connection with foundation templets for buildings
IPC: E04G17/14
Filed: 1945-02-13
Abstract: 624,607. Foundation templets; casting concrete walls in situ; portable buildings; walls. RUMBLE, R. W. Feb. 13, 1945, No. 3569. Convention date, March 9, 1944. [Classes 20(i), 20(ii) and 20(iv)] A foundation templet for the walls of a building or for shuttering walls comprises inner and outer templet frames A, B, Fig. 2, connected by ties 10, which may be similar to these described in Specification 616,525. Each templet frame provides an upper edge 8, Fig. 1, of tongue-and-groove cross-section to engage with the corresponding edges of wall panels 14. Each frame consists of corner units 4 and bars 6 connected together and to each other by couplings 7. The couplings grip by friction, allowing telescopic adjustment of the bars and units. The inner corner units have gussets 5. The various parts may be made of sheet metal. The walls erected on the templet may be of the kind described in Specifications 616,525, 616,526 and 624,608. The individual templet frames are claimed in Specification 624,606.  The Specification as open to inspection under Sect. 91 comprises also the laying of concrete blocks, to form a wall, between spaced templet frames, and the use of the templet frames as part of a hollow wall of a portable building. This subject-matter does not appear in the Specification as accepted.
Patent GB-213886-A (GB)
IPC: C08C1/12
Filed: 1924-02-11
Abstract: 213,886. K.D.P., Ltd., (Assignees of Stutelibury, M. S.). April 5, 1923, [Convention date.]. Emulsions, making.-Raw or vulcanized latex is converted into a pasty or solid substance, capable of re-conversion into its original state by the addition of water, by evaporation in presence of a protective colloid with or without an anticoagulant. Suitable colloids are gelatine, glue, gum arabic, saponin, casein, white of eggs, alkaline albuminates or their decomposition products (protalbinates and lysalbinates), &c. As anticoagulants alkaline sulphites, iodides, or rhodanides may be used. The addition of ammonia or an organic base is advantageous. The added substances may also serve as fillers, colouring- matters, vuicanization accelerators, &c. Specification 193,451, [C!ass 70, India-rubber &c.], is referred to.
Patent GB-454845-A (GB)
Title: Improvements in and relating to electric condensers
Filed: 1935-02-04
Abstract: 454,845. Condensers. PORZELLANFABRIK KAHLA, Kahla, Th³ringia, Germany. Feb. 4, 1935, No. 3585. Convention date, Feb. 3, 1934. [Class 38 (ii)] A dielectric layer of inorganic, for example, ceramic, insulating- material of high dielectric constant is movable with respect to at least one of the condenser coatings which are constituted by metal layers burnt on to the dielectric or to carrier plates. In Fig. 1, the metal coatings 12, 13 are on the ceramic layers 10, 11, one coating 13 and the dielectric 11 being movable together. In a modification, the coating 12 is beneath the layer 10 which then becomes part of the dielectric. In Fig. 7 a wedge section dielectric strip 30 is movable with respect to both coatings 28, 29. In Fig. 10, a substantially semicircular plate 35 of ceramic material is rotatable with respect to the two coatings 33, 34. In a further modification a hemi-cylindrical plate is movable between two hemi-cylindrical coaxial coatings. Another modification comprises a plate as 35, Fig. 10, coated on both sides with metal to form a three terminal condenser.
Patent GB-1279517-A (GB)
Title: Improvements in and relating to the use of ion-exchange resins as filter aids
IPC: B01J47/12
Filed: 1970-07-27
Abstract: 1279517 Using ion exchange resins as filter aid; ion exchange; mixing apparatus DEGREMONT SOC GENERALE DEPURATION ET D'ASSAINISSEMENT 27 July 1970 [7 Aug 1969] 36322/70 Headings B1C B1D and B1J A mixture of anionic and cationic resins in liquid carrier is prepared in a vessel 1, having at least one stirrer 3 and anti-vortex baffles 2, and the stirrer continues to rotate while the mixture is injected by device 5 into a closed circuit comprising pump 7, filter 6 and excess liquid outlet 8. The mixture compries 20 to 100g of resin/litre, and injection proceeds over a period of 1/2 hour, while liquid flows through the filter at 3 to 5 cubic meters per hour per square meter of filter surface, thereby ensuring that the fine flocs of resin formed in vessel 1 are deposited on the filter surface before they can agglomerate into larger flocs. Outlet 8 may be on overflow or a valve, and liquid displaced therefrom as the mixture is pumped into the circuit is either discharged or returned to vessel 1. Device 5 may be an injector or a positive displacement or centrifugal pump.
Patent GB-734833-A (GB)
Title: Improvements relating to sandals and other footwear
Inventor: TUSA JOHN
IPC: A43B3/12
Filed: 1951-02-15
Abstract: 734,833. Wire staples. BRITISH BATA SHOE CO., Ltd. May 30, 1952 [Feb. 15, 1951], No. 3675/51. Class 89(2). [Also in Group VII] The ends 3a of straps 3 which form the uppers of sandals and other articles of footwear are passed through slots 2 formed in an inner sole member 1 and are retained by metal staple-like devices, shown in Fig. 3, the converging legs 6c of which are passed through holes 7 punched in the strap ends. The ends 3a of the straps are secured between inner and middle soles 1, 8.
Patent GB-812562-A (GB)
Title: Buffer device for railway rolling stock
IPC: F16F9/22
Filed: 1956-02-06
Abstract: 812,562. Buffers. ATELIERS DE CONSTRUCTION DU NORD DE LA FRANCE. Feb. 6, 1956 [Feb. 5, 1955], No. 3698/56. Class 103(5) A piston 4 connected to the buffer head 1 displaces oil from the interior 7 of the cylinder 8 through orifices 10 to a duct 9 leading to an oil reservoir. A spring 23 also absorbs a proportion of the impact force. On the return stroke of the piston 4 the valve 13 opens to allow the chamber 7 to fill more quickly.