baber/WOPTO huggingface dataset:
Patent GB-479788-A (GB)
Title: Improvements in or relating to image suppression circuits for superheterodyne radio receivers
IPC: H03D7/18
Filed: 1936-12-15
Abstract: 479,788. Impedance networks. PHILCO RADIO & TELEVISION CORPORATION. Dec. 15, 1936, No. 34402. Convention date, April 27. [Classes 40 (iii) and 40 (v)] An image-suppressor circuit for connecting a superheterodyne receiver alternatively to a high-impedance antenna A or a low-impedance transmission line TL is provided with a circuit C, L, C1 tunable to the signal frequency and a coupling C2, S, C1 fixedly tuned to a frequency substantially below the undesired frequency, so that the undesired signal is attenuated more than the desired signal both by the shunt condenser C1 and bv the series inductance L. The secondary S, with 100 turns in a particular example, is earthed through a blocking-condenser C2 and is closed-coupled to a 600-turn primary P and 100-turn primary P1, all three coils being on the same closely wound former. When the aerial is to be used it is connected to terminal a and terminal d is earthed, the input impedance across terminals a, d being high. When the transmission line T, L is to be used it is connected to terminals b, d, and the midtapping c of the primary P1 is earthed; the input impedance across terminals b, d is then low, to match the line TL.
Patent GB-210592-A (GB)
Title: Improvements relating to boot trees
IPC: A43D3/14
Filed: 1922-12-19
Abstract: 210,592. Horne, F. G. Dec. 19, 1922. Trees and stretchers.-Relates to stretchers of the toggle type comprising a screw-threaded rod pivoted to the toe member along which rod may be adjusted a collar pivoted to a link carrying the heel member, and consists in improved adjusting means comprising an adjusting nut 6, a lock nut 7, and a spring washer housed in recesses in these two members. The nut 6 rotates within the collar 5, and has flanges at its ends preventing relative longitudinal movement.
Patent GB-606913-A (GB)
Title: Improvements relating to cathode ray tube circuits
IPC: H04N3/18
Filed: 1945-12-20
Abstract: 606,913. Television. COSSOR, Ltd., A. C., and WYNN, A. H. A. Dec. 20, 1945, No. 34591. [Class 40 (iii)] [Also in Groups XXXVI and XL (c)] In a television receiver in which the extrahigh voltage for the cathode-ray tube is supplied by the rectified output of a R.F. oscillator, a voltage derived from the beam deflecting means is applied to a control electrode of the R.F. oscillator valve in such a manner that upon failure of said deflecting means the extra-high voltage is cut off. An oscillatory circuit working at about 260 Kc/s. and generating about 8 K,V. comprising valve BT and inductances L1, L3 is inductively coupled, by means of L2, L4, to a rectifier valve RC1 which supplies a high voltage direct current, after smoothing in SMN, for application to the focusing and accelerating electrodes of a cathode-ray tube. A second rectifier RC2 supplies the screen grid of valve BT with a suitable voltage derived by rectification of the voltage pulses across. the line deflection coils LC (not shown), the circuit conditions being such that in event of failure of the line time-base the valve BT ceases to maintain oscillations and thus interrupts the high voltage supply to the cathode-ray tube.
Patent GB-861208-A (GB)
Title: Improvements in or relating to current converter installations
IPC: H02M7/06
Filed: 1959-10-13
Abstract: 861,208. Converting. SIEMENS-SCHUCKERTWERKE A.G. Oct. 13, 1959 [Oct. 24, 1958], No. 34680/59. Class 38 (2). A current converter comprises parallel connected branches each including series-connected semi-conductor rectifiers 2a which are protected by connecting in parallel with each individual rectifier an ohmic resistance 5 and a resistance 7 and condenser 6 in series. Resistance 7 may be omitted. An indicating member having the characteristic of an ohmic resistance, e.g. an incandescent lamp, may also be connected in parallel with each rectifier.
Patent GB-1110117-A (GB)
Title: Spinning composite fibres
Inventor: STRANG ALASTAIR
IPC: D01D5/30
Filed: 1964-08-25
Abstract: 1,110,117. Spinnerets. COURTAULDS Ltd. 24 Aug., 1965 [25 Aug., 1964], No. 34699/64. Heading B5B. A spinneret suitable for the production of bi-component composite fibres compries jet head 1 with radially disposed orifices 2, clamped by a retaining ring 3 to skirt 4 around a feed plate 5 provided with grooved channels 6 and 6<SP>1</SP> separated by dividing ridges 7, so that a row of jet orifices 2 is immediately above a dividing ridge 7. Grooved channels 6 are open at their outer ends to an annular feed chamber 8 between skirt 4 and a backing plate 9 on feed plate 5, while the grooved channels 6<SP>1</SP> are closed at their outer ends to chamber 8 but are open instead at their outer ends to a second feed chamber 10 between feed plate 5 and backing plate 9. A closure plate 11 completes the assembly by providing the outer wall of the feed chamber 8, pipes 12 and 13 respectively are provided for the introduction of the two spinning compositions into the feed chambers 8 and 10. Figures 2 and 3 respectively show the arrangement of feeds to channels 6 and 6<SP>1</SP> enabling spinning compositions A and B to pass freely into alternate similar grooves, obtaining thereby the required distribution. In use the two spinning compositions A and B are fed under controlled conditions through pipes 12 and 13 to feed chambers 8 and 10 whence they pass to channels 6 and 6<SP>1</SP> and thence together from dividing ridges 7 to jet orifices 2. Preferably the jet head has not less than 1000 jet orifices. In another type of apparatus, not shown, instead of the radial arrangement the jet orifices are arranged in parallel rows across the face of the chamber head and feed channels are all fed off the adjacent ends or both ends. The apparatus may be used for wet, dry and melt spinning but is especially suitable for wet spinning.
Patent GB-314312-A (GB)
Title: Improvements in or relating to kinematographs
IPC: G03B1/42
Filed: 1927-12-22
Abstract: 314,312. Michetti, A. Dec. 22, 1927. Kinematograph apparatus. - The continuous. feed sprockets 2, 3 in an intermittent-feed apparatus are mounted on a common shaft 1, and in such manner that the film between them and the gate or intermittent sprocket 8 forms helices of large diameter having axes approximately coinciding with the axis of the shaft 1. The shaft 1 may carry a pinion 5 geared to a pinion 6 on the shaft of the pin wheel of the maltese cross mechanism.
Patent GB-633596-A (GB)
Title: Improvements in rotary internal combustion engines
IPC: F02B53/00
Filed: 1947-12-31
Abstract: 633,596. Rotary internal-combustion engines. COMPAGNIE NORMANDE D'ETUDES POUR L'APPLICATION DE PROCEDES MECANIQUES. Dec. 31, 1947, No. 34912. Convention date, Jan. 11, 1946. [Class 110(ii)] A working cylinder 17 and a compressor cylinder 13, having rotors with outwardlysliding vanes, are connected with combustion chambers 35. 36 formed in the shaft 1. A fixed sleeve 37 has slots such as 40 which co-act with passages 33, 34 in the compressor rotor 2, similar slots and passages being provided in the engine side. Working fluid is admitted through ports 32 in one or both end walls 10, 11, and exhaust ports 48, 49 (not shown) in the walls of cylinder 17. The tips of the vanes 22, 23 bear against a rotary liner 26 supported on bearings 28. A sparking plug 45 may be used, or fuel may be injected. Tightening holes 50, in the rotors, are arranged as shown. Packing pieces 29, 31, 38, 39 are provided. A flywheel 51 is secured to the shaft 1. Lubricant may be added to the intake gases or by forcing oil through the shaft and distributing ducts.
Patent GB-1102039-A (GB)
Title: Improvements in or relating to variable directivity aerials
Inventor: CRUMPEN MERVYN JAMES
IPC: H01Q3/44
Filed: 1965-08-16
Abstract: 1,102,039. Aerials. MARCONI CO. Ltd. 11 May, 1966 [16 Aug., 1965], No. 34960/65. Heading H4A. A variable directivity aerial comprises a waveguide 1 having an array of radiating slots 2 in one narrow wall thereof, and a movable metal sheet member 3, located outside the waveguide and beneath one broad wall thereof. The member 3 projects beyond the wall containing the slots, but is arranged not to obstruc the main beam of radiation from the aerial. It may be moved by pivoting about a fixed axis 4 parallel to the axis of the waveguide. In an alternative arrangement the movement of the member 3 is upwards and downwards, parallel to the broad wall of the waveguide (Fig. 2, not shown). In another embodiment, a thin movable sheet (33), Fig. 3 (not shown), of an imperfect dielectric material, such as siliconloaded fibreglass, is placed in front of the slots (2). It may be moved towards or away from the slots or, alternatively, may be moved by pivoting about a fixed axis (44), Fig. 4 (not shown).
Patent GB-870189-A (GB)
Title: A photographic or cinematographic tele-objectives of a numerical aperture of at least 1:2.8
IPC: G02B13/00
Filed: 1958-10-31
Abstract: 870,189. Telephoto objectives. ISCO OPTISCHE WERKE G.m.b.H. Oct. 31, 1958 [Nov. 27, 1957], No. 34975/58. Drawings to Specification. Class 97(1) A telephoto objective comprises a positive simple component at the front and a positive simple component at the rear and between these components a negative component consisting of a positive and a negative element, cemented together or in broken contact, wherein the simple component at the front and the positive element adjacent thereto each have a refractive index less than 1.60, the sum of the refractive indices in the entire objective is less than 6.80 the sum of the AbbÚ numbers is less than 175, and the rear face of the third element is concave towards the rear and is separated from the rear component by between 0À15f and 0À25f, where f is the equivalent focal length of the objective. Preferably the refractive index difference between the elements of the middle member is between 0.12 and 0.18. Optical data are given for two examples.
Patent GB-467509-A (GB)
Title: Improvements relating to fluid pressure braking apparatus
IPC: B60T15/54
Filed: 1935-12-17
Abstract: 467,509. Fluid - pressure brakes. SIMMONS, A. W., and WESTINGHOUSE BRAKE & SIGNAL CO., Ltd. Dec. 17, 1935, No. 34996. [Class 103 (i)] A valve controlling supply and release of fluid to and from the brake cylinder comprises a piston 3 subject to train pipe pressure in the chamber 4 and to control chamber pressure in the chamber 6, variation of train pipe pressure for brake application or release causes movement of the piston 3, which moves until the pressure in the chamber 6 has, by movement of the piston 3, been increased or decreased to the pressure to which the train pipe has been varied, that is until the pressure on both sides of the piston are equal, so that the position of the piston and the supply and release of fluid to and from the brake cylinder are solely dependent on the variation of the controlling train pipe pressure. An inlet valve 17 and an exhaust valve 22 are operated by the piston 3 by means of lever 9, 11 and a balance lever 16. At each stage of brake application with the valve 22 closed against the piston 24, the valve 17 is opened, and maintained open until the pressure fluid admitted to the chamber 14 and the brake cylinder moves the piston 24 and the valve 22 together, swinging the lever 16 about pivot 13 until the valve 17 closes. At each stage of brake release the valve 22 is raised from the piston 24 which as the pressure falls in the chamber 14 is reseated by the spring 29. The chamber 4 may during release be subject to auxiliary reservoir pressure by means of a valve, Fig. 2, through passages 38, 39, 36. Passage 38 is connected to the chamber 4 and passages 36, 37 to auxiliary reservoir and train pipe respectively. When train pipe pressure falls pistons 34, 35 move over to connect chamber 4 to the train pipe by passages 37, 40, 38. An auxiliary reservoir charging and quick service valve may be arranged to perform this, function.
Patent GB-507079-A (GB)
Title: Improvements in transporting and dumping vehicles
IPC: B66F9/06
Filed: 1937-12-17
Abstract: 507,079. Vehicles with guided skip hoists; skips. DEMPSTER, G. R Dec. 17, 1937, Nos. 35034, 35035, and 35036. Convention dates, Dec. 23, 1936, Jan. 16, 1937, and Nov. 20, 1937. [Classes 78 (iii) and 78 (iv)] A hauling and dumping vehicle is fitted with a guided skip hoist comprising an upwardlyinclined guideway, a rod carrying sheaves extending across the guideway at its upper end, a detachable container adapted to be brought into contact with and moved along the guides, and having a catch member on its rear wall co-operating with a second catch member pivoted on the rod, and flexible means passing over the sheaves and normally supporting the container in contact with the guides. The Figure shows a drop-bottom skip 16 movable on a pair of braced inclined guides 2 and secured for transport in the elevated position by a latch 19 engaging the bail 18. The hinged bottom and integral parts 16<1> of the skip ends are normally closed by the hoisting ropes 13 which engage the pins 15 and are paid out to dump the load while the skip as a whole is suspended from the latch. These ropes are secured to drums 8 fixed on the shaft 6 which is rotated by means of a drum 7 turned by a rope 12 operated by a ram 10. In one modification of the skip, part of the front moves with the bottom and side walls to open it for dumping, and in another case an open-fronted skip is tipped bodily about a rear hinge for dumping. In a modification of the lifting-mechanism the pulleys 5 are mounted inside the guides 2 and the pins 15 are connected by chains to a bail to which the ropes 13 are attached. Plain swinging hooks are used in the latter case to engage and release the bail 18 and alternative hooks are fitted on the shaft 4 outside the rails 2 to engage brackets on the end walls of the skip. The bail-engaging mechanism comprises a hook 19 pivotally mounted on the shaft 4 and fitted with a pivoted plate 20 at its lower end. On the bail rising, it displaces the hook and plate bodily by swinging it about the shaft 4. Gravity restoration causes the hook to engage under the bail as soon as the latter has passed the upper edge of the hook. Meanwhile the longer plate 20 is unable to pass the bail and is swung rearwardly during this restoring movement by contact with the bail. To disengage for lowering, the bail is raised until the plate 20 can pass thereunder, after which the act of lowering causes the apparatus to be pivoted again about the shaft 4 and thus moved out of the way of the bail.
Patent GB-507645-A (GB)
Title: Improvements relating to protectors for plants and animals
IPC: A01G13/04
Filed: 1937-12-18
Abstract: 507,645. Shelters for animals ; plant protectors; glasshouses. BARNETT, C., and BARNETT,. W. Dec. 18, 1937, No. 3,5106. [Classes 5 (ii) and 6 (ii)] [Also in, Group X] A shelter for young animals or a protector for' growing plants comprises a pivotallymounted device 5 of cone or other shape provided with a windvane 11 and covered on the side remote from the vane with protective material 10 that is preferably transparent and waterproof. A stationary enclosure for the plants or animals is mounted on a base 3, and carries the pivot 9 for the device 5. For protecting chickens, the enclosure is made of wire netting and is provided with a floor of fine mesh, netting above a wood or metal lower floor, and with a door and feeding-appliances.
Patent GB-424717-A (GB)
Title: Improvements in or relating to the treatment of vegetable, animal and artificial fibrous materials
IPC: D06M13/332
Filed: 1933-12-14
Abstract: Hexamethylenetetramine alkylates or arylates with any acid ion are used as auxiliaries in aqueous baths for the treatment of vegetable, animal and artificial fibrous materials such as textiles. Hexamethylenetetramine decyl iodide or nitrate may be used as wetting agents and the corresponding compounds with higher aliphatic residues, e.g. dodecyl, tetradecyl and hexadecyl residues have emulsifying and cleansing properties.  The following substituted derivatives, which are also foaming agents are specified: [(CH2)6N4CH2CH2OC10 H21]Ac ; [(CH2)6N4CH2CHOHCH2OOCC10 H21]Ac ; [(CH2)6N4CH2COOC12H25]Ac ; [(CH2)6N4C6H3 (NO2)2]Ac ; [(CH2)6N4C6 H3(NH2) (NHCOC10 H21)]Ac, in which Ac is an acid ion.  They p  may be prepared by condensing hexamethylene tetramine with the appropriate component in dry chloroform.  Decylchloroethylether may be prepared from glycolchlorhydrin and sodium decylate. Chlorpropyleneglycolmonoundecylate may be prepared from a  : \su-dichlorpropylalcohol and sodium undecylate.  Undecanoylamino - 2 - amino - 1 - chlorbenzene may be prepared from undecanoylchloride and 2 : 4-diamino-1-chlorbenzene.ALSO:Hexamethylenetetramine alkylates or arylates having any acid ion and preferably containing higher alkyl or aryl residues are stated to have emulsifying properties.  Hexamethylenetetramine iodo-dodecylate, tetradecylate and hexadecylate are mentioned and also hexamethylenetetramine derivatives, having the following formul : [(CH2)6N4CH2CH2OC10 H21]Ac; [(CH2)6N4CH2CHOHCH2OOCC10 H21]Ac; [(CH2)6N4CH2COOC12H25]Ac; [(CH2)6N4C6H3 (NO2)2]Ac; [(CH2)6N4C6H3(NH2)) NHCOC10 H21)]Ac in which Ac is an acid ion.
Patent GB-1367440-A (GB)
Title: Apparatus for measuring air pollution
IPC: G01N27/60
Filed: 1973-07-26
Abstract: 1367440 Electro-physical measurement - Air pollution C G VON BERCKHEIM 26 July 1973 [16 Dec 1972] 35549/73 Heading G1N Air pollution is measured by the ratio of the concentration of large/small ions in a sample. Air is drawn by a fan 3 through cylindrical capacitors 1, 2 polarized at 50v and 180v respectively. The resulting charge currents are amplified at 6, 7 and fed to a divider (ratio) circuit 8. As shown a similar measurement is made for negative ions and added at 20 to the positive ion measurement. The result may be displayed at 21 and recorded at 22. (For Figure see next page)
Patent GB-469605-A (GB)
Title: Improvements in or relating to alloy steels
IPC: C22C38/30
Filed: 1935-12-23
Abstract: The steel alloys described in the parent Specification are modified in one or more of the following respects: (1) the carbon range may be extended to 0,15-1,6 per cent; (2) the silicon range may be 0,55-3 per cent; (3) 1-16 per cent of cobalt may be present.  The modifications include also specific examples falling within the ranges of the parent Specification but not specifically described therein.  In general, the alloys contain 0,15-1,6 per cent of carbon, up to 3 per cent of silicon, up to 2 per cent of manganese, up to 15 per cent of chromium, 0,2-6 per cent of tungsten, up to 5 per cent of vanadium, 0,6-15 per cent of molybdenum, and up to 16 per cent of cobalt.
Patent GB-1510662-A (GB)
Title: Decoder for the secam system
IPC: H04N9/68
Filed: 1975-08-28
Abstract: 1510662 Colour television THOMSON-CSF 28 Aug 1975 [30 Aug 1974] 35621/75 Heading H4F S.E.C.A.M. decoder comprises channels 1 and 2 for the direct and one line period delayed colour subcarrier, each channel including a limiter 3, 4, a frequency discriminator 5, 6, a low-pass filter 7, 8, a clamping device 9, 10 and a sampling and holding device 13, 14. The clamping device and sampling and holding device in each channel are operated alternately during successive horizontal blanking back porch intervals, and the outputs from the sampling and holding devices compared 15, 16 with a reference signal V o , -V o  whose absolute value corresponds to the difference between the nominal levels of the signals delivered by the frequency demodulators 3, 5 and 4, 6 for the two different resting frequencies F R  and F B  used for the alternate transmission of the red and blue chrominance components. The resulting outputs of the comparators, e.g. differential amplifiers 15, 16 are applied as gain control signals to the frequency discriminators 5, 6. The outputs of clamping devices 9 and 10 are fed to a double switch 20 operating at half line frequency which directs the red and blue chrominance components via respective de-emphasis filters 11 and 12 to a matrix 21 which forms the red, green and blue chrominance components. The switching, clamping and sampling pulses are derived from the trailing edges of the horizontal sync. pulses L by means of bi-stable 25, monostables 22, 23 and switch 24, the phase of the bi-stable 25 being controlled by the output of a differential amplifier (polarity discriminator) 28 receiving the output of sampling and holding device 13. The reference signals fed to differential amplifiers 15 and 16 may have the reverse polarity, as shown, or the same polarity according to whether the clamping devices and sampling and holding devices in the two channels are operated in phase or in phase opposition.
Patent GB-482769-A (GB)
Title: An improved machine for bending sheet metal
IPC: B21D5/04
Filed: 1936-12-30
Abstract: 482,769. Angular bending. PRESSED STEEL CO., Ltd., and TRIBE, T. F. Dec. 30, 1936, No. 35691. [Class 83 (iv)] In a machine for the angular bending of corrugated &c. sheets, means is provided for applying a progressive stretch to the sheet during bending. A corrugated sheet a is clamped by a member 45 to a former 23 and its ends are secured by clamps 34 slidable in arms 28. On descent of a head 44 fingers 42 contact rolls 40 and swing the arms 28 about fixed pivots 55 to effect the angular bending. Fixed cams 27 contact with blocks 38 secured to the clamps 34 to move them apart during the bending to apply a stretching force to the sheet.
Patent GB-994485-A (GB)
Title: Oximino-dibenzo-cyclo-heptene
Inventor: WRIGLEY THOMAS IAN
Filed: 1961-10-04
Abstract: The invention comprises 10, 11-dihydro-5-oximino - 5H - dibenzo[a,a ] - cycloheptene and the preparation thereof by reacting the corresponding ketone with hydroxylamine or a salt thereof.
Patent GB-1011910-A (GB)
Title: Plant culture media
IPC: A01G31/00
Filed: 1964-09-01
Abstract: Plant pots or the like which disintegrate in the soil are formed from a composition comprising particles of a water-absorbent resilient synthetic material and non-resilient organic or mineral material and a binder.  The resilient material may be natural or synthetic rubber, polyurethane, or viscose foam. The non-resilient material may be polystyrene foam, vermiculite, perlite, or pumice.  The binder may be natural or synthetic rubber latex or insolubilized casein glue.  The composition may also comprise an ion exchange resin in which is absorbed a solution of a fertilizer, spent coffee grounds, terra-cotta, earthenware, or sodium alkyl aryl polyoxyethylene sulphate.  The composition may be moulded into a block having a cavity or groove.  The cavity may be filled with natural sponge, formaldehyde-urea or viscoso foam, peat, earth, vermiculite, perlite, or pumice.  The pots may be sprinkled with or partially immersed in a solution of a fertilizer.
Patent GB-155764-A (GB)
Title: Improvements in kinematographs
IPC: G03B41/08
Filed: 1920-07-09
Abstract: 155,764. Szczepanik, J. July 19, 1919, [Convention date]. Drawings to Specification. Addition to 148,254. Kinematograph apparatus.-Relates to kinematographic taking or projection apparatus constructed so as to admit the use of a continuously moving band. The invention consists of the following modifications of the subject matter of the parent specification :-(1) Prisms and combinations of prisms are used for erecting the image. (2) The winding arrangement is disposed so that the film hangs in free loops between the drums. (3) In three-colour apparatus, the diaphragms of the three objectives are mechanically connected so as to work in unison. (4) For three-colour projection, a revolving optical system of three auxiliary condensers is used in conjunction with a main condenser and suitable revolving reflectors.