baber/WOPTO huggingface dataset:
Patent GB-1503413-A (GB)
Title: Automatic distortion-correcting arrangement
IPC: H04N5/14
Filed: 1976-02-11
Abstract: 1503413 Distortion correction THOMSON-CSF 11 Feb 1976 [14 Feb 1975] 05462/76 Heading H4L In an automatic distortion correcting arrangement, a signal Ve being fed to corrector 1 receiving at inputs 81-86 parameters defining the changes made to signal Ve to provide output Vs, the parameters are derived from random signal generators, the duration of signal Ve being divided into periods T of normal transmission separated by shorter test periods To during which the signal Ve has a given characteristic. Signal distortion is measured at 2, the measurement during a test period being stored and compared with a previous such measurement, the inputs 81-86 during the test periods being connected to the random generators. Should the comparison indicate that the current measurement is less than a previous one, the currently generated parameters are stored at 41-46 to be used for the next normal period, otherwise the last stored set of parameters are retained at 41-46 for further use during the next normal period. The previous measurement with which a current one is compared may be either the last measurement for which the comparison indicated a decrease, or, for each alternate test period, the current measurement may be stored for comparison with the succeeding measurement. The random signals are generated by a set 11-16 of independent generators of random frequencies varying in time, coupled to counters 21-26 counting the number of cycles in a normal period T, the counter outputs being fed to the corrector 1 via d/a converters 61 during test periods, the converters receiving the number last stored in registers 41-46 during normal periods. The comparator operates digitally, measurements being sampled at test periods and held during normal periods, for conversion to digital form in a/d converter 5, the current measurement being stored in register 6, the comparison measurement from a previous test being stored in register 7. Pre-correction of TV transmitter distortion, Fig. 2 (not shown). The antenna signal is sampled and reconverted to i.f. by mixer (27), filter (28) being tuned to detect intermodulation, due to transmitter non-linearity, between the sound and "PAL" colour subcarriers, the amplitude of such intermodulation representing the measured distortion. Corrector (1) receives the combined audio and video signals after modulation to i.f., the precorrected signal being mixed and amplified for transmission. The test periods To comprise line 331 in a scanning raster. The arrangement may be used for pre-correction in a relay transmitter, or in the correction of differential phase, or group delay.
Patent GB-750646-A (GB)
Title: Hydraulic power transmission for trailer brakes with separate fluid systems for towing vehicle and trailer
IPC: B60T11/10
Filed: 1954-02-24
Abstract: 750,646. Hydraulic brakes. TEVES, H., and TEVES, E. A., [trading as TEVES MASCHINEN - UND ARMATURENFABRIK KOMM.-GES., A.]. Feb. 24, 1954 [March 11, 1953], No. 5476/54. Class 103 (1). The invention resides in a coupling for the hydraulic braking systems of tractor-trailer vehicles, in which each vehicle fluid system includes a working cylinder, i.e. cylinder 1 on the tractor vehicle, cylinder 11 on the trailer vehicle, formed as a coupling head and a piston working in each cylinder, the arrangement being such that when the vehicles are coupled and collar 12 rigidly connects the two cylinders, the tractor piston 2, under the influence of hydraulic pressure supplied via connection 5, is adapted to act mechanically on the trailer piston 10, through spigot 8 of piston 2 and spigot 9 of piston 10, to cause the trailer brakes to be applied via connection 16; and is characterised in that the coupling heads when joined together act as a pressure converter in that the two pistons 2 and 10 are of different diameters so as to match the braking force of the tractor to that of the trailer.
Patent GB-435310-A (GB)
Title: Improvements in and relating to electric discharge lamps
IPC: H05B41/232
Filed: 1934-02-19
Abstract: 435,310. Discharge lamps. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London, and MAXTED, R., 161, Clifton Road, Rugby. Feb. 19, 1934, No. 5493. [Class 39 (i)] In a lamp having a magnetic means producing a field counteracting the tendency of the arc to wander due to convection currents and retaining it axial to the lamp, the means is controlled in such a manner that the field is adjusted automatically to obtain the desired result both during starting and normal operation. In one form, the magnetic means comprises two solenoids 3, 4 consisting of short laminated cores mounted on the lantern so that their fields, one of which is constant and the other dependent on the discharge current are opposed. In modifications, the solenoid 3 may be connected in series with the tube 1 and parallel with the stabilizing choke 2, or the solenoid 4 may be connected across the lamp terminals, or a single solenoid in series with a condenser and resistance may be connected across the lamp terminals. A condenser may be inserted in series with a solenoid in all cases. The solenoids may be mounted between the walls of a double envelope. Specification 429,750 is referred to.
Patent GB-830695-A (GB)
Title: Closing mechanism for containersí¬especially collapsible tubes
Inventor: JENSEN EGON
IPC: B65D47/20
Filed: 1957-02-19
Abstract: 830,695. Container closures. ROBINSON, J. Feb. 19, 1957, No. 5525/57. Class 125(3). In a closure arrangement for collapsible tubes &c. a tube 1 of polythene has an integral top 2 with screw thread 3 to -receive an apertured cap 6, a projection 4 to enter cap aperture 8 and slits 5 forming selfclosing valves, the slits being parallel to the tube axis but out of alignment with the discharge orifice 8 so that screwing down the cap prevents the slits opening under pressure of the contents.
Patent GB-302837-A (GB)
Title: An improved closure for collapsible tubes
IPC: B65D47/28
Filed: 1928-02-22
Abstract: 302,837. Neumann, F. Feb. 22, 1928. Stoppers with valves. - A collapsable tube is closed by a screw cap a of nut-like formation and a plate h slidably mounted on the cap and formed in one half g with an aperture o adapted to be brought into register with the mouth of the tube to allow the contents to be squeezed out. The plate is formed with vertical sides and inturned flanges b<1> at the lower edges thereof, the flanges retaining the plate on the cap a.
Patent GB-373656-A (GB)
Title: Improvements in and relating to rudders
IPC: B63H25/38
Filed: 1931-02-23
Abstract: 373,656. Rudders. COSTANIEVICH, L., 704, Scorcola Coronca, Trieste, Italy. Feb. 23, 1931, No. 5624. Convention date, Feb. 22, 1930. [Classes 4 and 114.] A ship's rudder which, according to the Specification as open to inspection under Sect. 91 (3) (a), may also be applied to aircraft is made sectionally and the successive portions such as 3, 4 are deflected in the same direction by amounts which successively increase with respect to the fixed post 2 which is shaped to fair into the tapered lines of the rudder. The Specification as open to inspection also comprises the application of this construction to a plate rudder as well as a modification in which a balanced rudder is provided with a tail part which moves relatively to and in the same direction as the main pair. This subject-matter does not appear in the Specification as accepted.
Patent GB-953309-A (GB)
Title: Heat exchanger tube supports
IPC: F28D7/06
Filed: 1963-02-12
Abstract: 953,309. Tubular heat-exchangers; tube supports. BROWN FINTUBE CO. Feb. 12, 1963 [March 9, 1962], No. 5659/63. Heading F4S. A heat exchanger has an elongated shell 10 and a bundle of heat exchange tubes 26, located parallel to the shell and a spacer 40 acting as a supporting device for the tubes and, consisting of a central member 41 in the form of a short tubular member which is adapted to be mounted on and preferably fixed to the central tube section 26<SP>1</SP> of the bundle of tubes in each shell; the central member 41 supports a set of similar outwardly opening channel members 42 with diverging walls 44, equally spaced about member 41 and a second set of smaller similar outwardly opening channel members 43 with diverging walls 46, the members 43 being alternately disposed relative to members 42, and the outer edges of members 42 engaging the inner surface of shell 10 so as to locate the tube bundle relative to the shell. The outer tubes 26 are held against the channel members by straps 50. In Fig. 1 the spacer is shown embodied in a heat exchanger of the hairpin-type, consisting of a pair of parallel shell tubes 10 and 11, connected at their rear ends to a return bend housing 12.
Patent GB-399390-A (GB)
Title: Improvements relating to respiratory apparatus
IPC: A62B18/08
Filed: 1933-02-24
Abstract: 399,390. Respirators. SAINT RAPT, J. DE, 86, Avenue Jean-Jaures, and DECOMBE, G., 15, Rue Emile-Zola, both in Lyons, France. Feb. 24, 1933, Nos. 5739 and 5740. Convention dates, Feb. 25, 1932 and Sept. 3, 1932. [Class 81 (ii).] A respirator mask y is provided, in the region near the cheek, with a valve which, while preventing the entrance of noxious gases, permits the introduction of a tube i through which the wearer may absorb liquid, semi-liquid, or gaseous nutrients. The valve a comprises two rubber discs having central perforations smaller than the tube i and three or more intermediate discs each having a slit in the form of a large arc or a chord passing close to but not through the centres of the discs, the slits being arranged in angular symmetry. The discs are held, by a screw-ring f and washer f<1>, in a mount e secured to the mask by a screw-ring 3 and washer 2. The tube i carries a rubber tube j to which is secured a stiff tube v carrying a valve i having longitudinal slits u normally closed. To absorb nutrient the tube v is immersed in for example liquid in a bottle on the bottom of which the valve t is pressed to open the slits and permit induction. Alternatively the valve t may be mounted directly on the tube i, tubes j, v being dispensed with. The tube i is normally closed as by a pinch cock and the valve a covered when not in use by a rubber cap furnished with a press stud and carried by a flap secured to the mask.
Patent GB-348245-A (GB)
Title: Improvements in or relating to metal stands for supporting pieces of pottery whilst being fired in a kiln
IPC: F27D5/00
Filed: 1930-02-21
Abstract: 348,245. Pottery manufacture. SIMPSON, T., Elder Works, Cobridge, Stokeon-Trent, and SYLVESTER, W., Scotia Works, Tunstall, Staffordshire. Feb. 21, 1930, No. 5758. [Class 87 (i).] A sagger comprising three upright metal bars a, b bent at their lower ends to form a base part and a number of earthenware rings or thimbles c slidable on the uprights is made of a non-scaling, heatresisting steel. Seizing of the collars on the bars (which may occur if cast-iron bars are used) is thereby eliminated.
Patent GB-790530-A (GB)
Title: Crimping tool
IPC: H01R43/042
Filed: 1956-02-24
Abstract: 790,530. Jointing by stamping. AMP, Inc. Feb. 24, 1956 [March 2, 1955], No. 5821/56. Class 83 (4). A crimping tool adapted to be operated by a press or other force exerting means comprises a pair of levers having free ends, means pivoting the levers together near their opposite ends, the free ends of the levers being swingable towards each other into a closed position and away from each other into an open position, a plurality of opposed dies carried by said levers intermediate the pivoting means and the free ends and closure-limiting means engaging each other along the entire length of the levers and extending out along their free ends for positively limiting closure of the levers. The tool comprises a pair of levers 10 and 12 pivoted together at one end by a pair of links 18 and 20. To assist in keeping the levers in alignment as they are opened and closed a bearing roller 22 is retained in arcuate notches 24 and 26 in the jaw faces of the levers adjacent the pivoted ends. Inclined heel stops 28 and 30 are provided on the levers to limit their opening. The jaw faces 31 and 32 are shaped to form a plurality of graduated crimping dies and intermediate the dies the jaw faces abut to provide rigid closure limiting stops. A pair of lateral guides 50 and 52 are secured to the free end of lever 12 to prevent canting of the levers and ensure their accurate alignment.
Patent GB-1133745-A (GB)
Title: Polarized relay with magnetically controlled contacts
Inventor: KAPRALOV IGOR IVANOVICH
IPC: H01H51/28
Filed: 1966-02-10
Abstract: 1,133,745. Electromagnetic relays. INSTITUT AVTOMATIKI I ELEKTROMETRII SO AN SSSR. 10 Feb., 1966, No. 5850/66. Heading H1N. A polarized relay having a sealed magnetic contact unit has fixed contact springs 4, 5 bent to engage the opposite walls of the housing 1 to locate the contacts. The movable contact armature 3 is sealed in a branched port 2 of the housing 1 and has divided ends 6, 7 for cooperation with contacts 4, 5. The relative positions of the contacts depend upon permanent magnets 13, 14, 15 and the energization state of coils 11, 12, 16 and 17. In Fig. 2a (not shown), the movable contact armature comprises two flattened helical springs in tension. The armature contact member may be bent as a compressed double loop (Fig. 3, not shown) and normally engage one of the fixed contacts.
Patent GB-1038873-A (GB)
Title: Fluid pressure control system and valve therefor
IPC: B60T13/40
Filed: 1963-02-13
Abstract: 1,038,873. Valves; fluid-pressure brakes. BERG AIRLECTRO PRODUCTS CO. Feb. 13, 1963 [June 13, 1962], No. 5885/63. Headings F2F and F2V. A control valve 10 for an air brake system has a cylinder 15, Fig. 2, with a plurality of axially extending passages 24 and a piston 35 displaceable from a position in which it lies wholly within the length of the passages to permit communication between an inlet 12 and an outlet 13 to a position in which it blocks such communication and a second series of axially extending passages 34 in the operating member 32 of the piston vent the outlet 13 to atmosphere through a port 33. Fluid forces on the piston 35 and on an auxiliary piston 36 with which it is rigidly connected hold the valve in the position to which it has been set by a handle 29. Should a low air pressure condition occur in the main circuit, the valve is moved to the position shown in full lines to isolate the inlet from the outlet and vent the brake cylinders 54, 55 to atmosphere so that springs in the cylinders can apply the brakes. A second valve 44, similar to the valve 10, but in which the piston 36 is omitted and a vent 21 is closed by a screwed plug enables air from an emergency tank to release the brakes while the vehicle is driven to a repair area. The main air tank is charged through a line 52 and a non-return valve by a compressor and supplies air to the emergency tank through a further non-return valve. A two-way check valve is interposed between the valve 10, 44 and the brake cylinders.
Patent GB-144381-A (GB)
Title: Improvements in or relating to superheaters for locomotive, marine and other boilers
IPC: F22G7/06
Filed: 1919-03-10
Abstract: 144,381. Dorman, R. B. March 10, 1919. Fire and smoke tube superheaters.-Superheating-tubes 4 are secured to their headers by means of a flange block 8 having an undercut slot or groove 7 extending across the block. The block is held against the face of the header by a bolt 12 having a round, elliptical, or square head 10 engaging in the slot. The tubes may be expanded into holes in the block, or they may pass freely through the block and be expanded into a washer between the block and the header. The heads of the bolts securing a row of elements are formed with flat faces which abut against one another so as to keep the heads in position to receive the blocks. The heads of the front bolts abut against a rib on the header. The rib prevents the slots in the blocks from becoming choked with ash.
Patent GB-340852-A (GB)
Title: Improvements relating to slicing machines
IPC: B26D7/02
Filed: 1930-02-22
Abstract: 340,852. Slicing-machines. NAAMLOOZE VENNOOTSCHAP MAATSCHAPPIJ TOT VERVAARDIGING VAN SNIJMACHINES VOLGENS VAN BERKEL'S PATENT EN VAN ANDERE WERKTUIGEN, 33, Boezemsingel, Rotterdam, Holland. Feb. 22, 1930, No. 5956. Convention date, Feb. 22, 1929. [Class 28 (ii).] Clamping-apparatus for slicing-machines comprises a member mounted adjustably on the undertable of the machine and adapted to clamp the substance near its forward end, a member mounted adjustably on the substance holder of the machine and adapted normally to clamp the substance behind the first-mentioned member, and an upright plate on the undertable with which plate said clamping members co-operate. As shown in plan in Fig. 2, the substance d is pressed against a glass or like plate c, secured to the undertable, by a clamp e on a lever g pivoted at i to the undertable. A compression spring l presses the clamp e against the substance, and a pawl r engages the end h of the lever g to hold the clamp in an inoperative position during the manipulation of the substance. The rear end of the substance is held by a clamp f on a lever m also having a compression spring at the end n. The lever m is pivoted on a post p on the feed table. In the modification of the rear clamp shown in Fig. 3, the lever m<1> is pivoted to the post p<1> and is of bell crank form, the part n<1> being connected bv a compression spring t with a projection u on the post. A lug v on the lever m<1> engages a stop w. As shown in dotted lines, the clamp f is retained in its highest position by the spring t to facilitate handling of the substance. As the clamp lever is depressed, the spring passes the dead centre, and exerts a clamping pressure on the lever m<1>. The stop w limits the upward and downward movements of the clamp lever.
Patent GB-1042162-A (GB)
Title: Improvements relating to laminated sheet materials
IPC: D21H23/00
Filed: 1963-02-14
Abstract: Fibrous sheets, to be used in making laminates, are impregnated with a thermosetting resin, when they already contain as an additive a liquid hydroxyl compound or a hydrophilic ether, the hydroxyl compound containing at least one hydroxyl group for every two carbon atoms in the molecule or, if it also contains one or more ether oxygen atoms, then at least one hydroxyl group for every four carbon atoms in the molecule.  The additive should be free from other non-hydrocarbon substituents and may comprise glycerol, diglycerol, triglycerol, ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol or trimethylene glycol.  Suitable hydrophilic ethers are dioxane and the methyl and ethyl monoethers of ethylene glycol. Surface-active compounds such as the long-chain alkyl sulphates and sulphonates, certain long-chain quaternary ammonium salts and polycondensation products of olefin oxides, e.g. ethylene oxide, may additionally be used with the additive.  The additive may be applied to the fibrous pulp from which the sheets are made or it may be applied in aqueous solution to the finished sheets by spraying or dip rolls, the sheets optionally being saturated with water prior to the spraying.  The proportion of additive should not exceed 10% of the weight of the sheets.  In an example, sheets of long-fibred kraft paper are impregnated with a 50:50 water-glycerol mixture and dried. Five sheets are then impregnated with 30-34% of phenol-formaldehyde resin and the other five with 45-47% of the same resin.  In another example, the sheets are first saturated with water and then impregnated with a 40:60 diglycerol water mixture.
Patent GB-174534-A (GB)
Title: An eccentric locking device for securing battens over hatch tarpaulins and the like
IPC: B63B19/24
Filed: 1921-02-23
Abstract: 174,534. Taylor, T. H. Feb. 23, 1921. Clamps other than screw.-An eccentric disc A is pivoted at B to a bracket C on the coaming E of a hatch. When a tarpaulin is spread over the hatch and the batten D placed over it, the eccentric disc A is forced round on its pivot by hitting the corners formed by cutting away a portion of its periphery, causing the batten to grip the tarpaulin tightly between itself and the coaming. The disc may revolve round the pivot B, or may be rigidly attached to it when the pivot revolves in a hole in the bracket.
Patent GB-489190-A (GB)
Title: Improved manufacture of nitrogen compounds
Filed: 1937-03-01
Abstract: Hydroaromatic secondary or tertiary amines or quaternary p  ammonium compounds, which are stated to be wetting and foaming agents and also disinfectants, are produced by treating with alkylating agents amines having the formula R[HyAr]NR1R11 wherein R is an aliphatic, hydrocarbon radicle with four or more carbon atoms, which may be interrupted by oxygen, sulphur or nitrogen, HyAr is a hydroaromatic radicle and R1 and R11 are hydrogen or any organic radicle. As alkylating agents, the following may be used: alcohols, esters of alcohols with strong acids, e.g. alkyl halides and nitric acid esters of alcohols, olefines, aliphatic aldehydes, ketones, acetals and organo metallic compounds and alkylene oxides.  The use of epichlorhydrin and ethyleneimine is mentioned.  The presence of hydrophile groups in the alkylating agent is desirable.  Such groups are carboxyl, sulphonic acid, sulphuric ester, hydroxyl, ether, mercapto, amino and ester groups.  In examples: (1) 4-sec.-octylcyclohexylmethylamine is treated with glycide and also with ethyleneoxide; (2) a mixture of 4-sec.-alkyl-2-methylcyclohexylamine is reacted with sodium chlorethanesulphonate or with ethylenechlorhydrin and then sulphonated; the cyclohexylamine mixture is prepared by condensing the olefines and phenols in the presence of perchloric acid, hydrogenating, reacting with ammonia after oxidizing and reducing the resulting imine; (3) N-methyl-N-benzyl-N-4-dodecylcyclohexylamine is reacted with dimethylsulphate; (4) 4-sec.-dodecyl-2-methylcyclohexylamine is reacted with dimethylsulphate to give two products, 4-dodecyl-2 - methylcyclohexyldimethylamine and a quaternary ammonium salt; the amine is converted into the oxide by means of hydrogenperoxide; (5) a mixture of 4-sec.-alkyl (C6-C12)-2-methylcyclohexylamines is reacted with chloracetic acid or with chloracetic ester followed by saponification. Specifications 475,867 and 482,580 are referred to.
Patent GB-791178-A (GB)
Title: Magnetic transducer and housing
IPC: G11B5/187
Filed: 1956-02-28
Abstract: 791,178. Magnetic recording heads. HUGHES AIRCRAFT CO. Feb. 28,1956 [March 2,1955], No. 6210/56. Class 40 (2). An electromagnetic transducer and housing comprises a transducer 31 mounted in the cavity of a housing 17 having a rectangular opening 12 the same length as the pole faces 23 of the transducer and a width somewhat greater than the width of the pole faces, adhesive means 35 fastening the transducer to the inside of the housing, and a cover-plate 18 to the housing having a portion projecting into the rectangular opening 12 to form an effective clamp for the polepieces of the transducer. The two halves 34 of the magnetic core are made of ferrite, are - spaced by a shim of silver or other highly conductive material, and are secured in the desired relative position by an epoxy resin-glass adhesive, preferably comprising a mixture in the proportions 25 per cent resin: 75 per cent glass beads. The coils 28 are wound directly on to the core members 34 which are first given a coating of the above mentioned epoxy resinglass adhesive.