baber/WOPTO huggingface dataset:
Patent GB-478226-A (GB)
Title: Improvements in signal-selecting systems for use in carrier signalling
IPC: H03G5/26
Filed: 1937-01-21
Abstract: 478,226. Valve circuits; impedance networks. HAZELTINE CORPORATION. Jan. 21, 1937, No. 1863. Convention date, Feb. 12, 1936. [Classes 40 (iii) and 40 (v)] The band-width of a filter composed of two tuned circuits I, III, Fig. 1, is varied by varying a resistance 14 in the coupling circuit II between them, and the volume is kept constant by simultaneously varying a resistance 15 in one of the end circuits I, III. The resistances 14, 15 may be in series or in shunt and may be jointly controlled by hand. The valve 10 may be the intermediate-frequency amplifier of a superheterodyne receiver. In a modification, Fig. 3 (not shown) the resistances may be constituted by valves and varied by means of a potentiometer controlling the grid bias of both valves. In a further modification, Fig. 4, in which the variable resistance for controlling selectivity is the resistance of the valve 32 shunted upon the coupling circuit II, the resistance of the valve 31 is shunted upon the input tuned circuit I. The potentials of the control grid of valve 32 and suppressor grid of valve 31 are simultaneously varied by means of the potentiometer 34 so as to vary the resistances of the valves in opposite directions. Control of selectivity and volume by desired and undesired signals conjointly. In a superheterodyne receiver, Fig. 5, the intermediate frequency is filtered by a network 44 whose selectivity is controlled by the desired signal through control of the resistance of valve 48, which is effected by the output of the rectifier 46 through the resistance-capacity network shown. The same rectifier 46 governs the gain of the intermediate-frequency amplifier 43 through the lead 62, and regulates the output from the filter 44 by biassing the valve 49 (corresponding to resistance 15, Fig. 1), in accordance with the strength of the desired signals. The undesired signals, on the other hand, control the volume of the output from the radio-frequency amplifier and detector 40; thus when interfering signals are strong the transmission through the filter 44 is reduced and the selectivity is narrowed by the action of the rectifier 46 and valve 49. For this purpose the desired and undesired signals together are applied through a second intermediate-frequency amplifier 71, which passes a broad band, to an automatic-volume-control rectifier 72, which governs the volume of the output from the amplifier 40. The amplifier 71 has a characteristic, Fig. 5a, (not shown), showing a peak of amplification for signals that differ from the carrier by Œ10 kc.; thus the presence of interfering signals reduces the output of the amplifier 40, and so indirectly increases the selectivity by means of the parts 46, 49.
Patent GB-710329-A (GB)
Title: An improved apparatus for separating stones and the like from root crops
IPC: A01D33/04
Filed: 1950-03-13
Abstract: 710,329. Photo-electric sorter. SMITH, T. S. March 13, 1951 [March 13, 1950], No. 1872/53. Divided out of 709,001, [Group XXXVI]. Class 40 (3) Root crops, e.g. potatoes carried on a conveyer are separated from stones by a light beam which is transmitted by a potato but interrupted by a stone or other opaque matter so that a photo-electric cell operates means for ejecting the stones upwardly from a conveyer to contact means which deflect the stones on to another conveyer. As shown two conveyers 50 each of which comprises a number of separate containers 51 containing either, say a potato or a stone pass between one of light sources 54 and photocells 55. The sides of the containers are provided with cut away portions through which the light beam passes. Each container is provided with an aperture 58 in its base and if the light beam is transmitted by a potato the photo-cell output is amplified and used to control an electromagnetic valve 56 which directs a jet of air through aperture 58 to eject the potato vertically. The potato then strikes a curved housing plate 59 which guides it sideways to fall on to a further conveyer 61. The conveyer need not consist of a number of separate containers but may consist of two section endless parallel belts (Figs. 1-6) (not shown) on which are carried both stones and potatoes. In this arrangement blocking of a beam by a stone causes the stone to be ejected, and the light beam may pass from beneath the conveyer to a photo-cell situated above it, Figs. 5 and 6 (not shown). In this latter case the deflector mechanism is situated along the conveyer from the light beam. A mechanical deflector may replace the air jet.
Patent GB-147958-A (GB)
Title: Improved process for the manufacture and use of cuprous oxide
IPC: C01G3/02
Filed: 1918-02-01
Abstract: Copper-ammonium compounds are prepared from cuprous oxide which has been made by blowing air through liquid refined copper.ALSO:Cuprous oxide is obtained by blowing air through liquid refined copper until the desired stage of oxidation is effected.  The cooled material may be ground.  It is suitable for the production of copper salts and cuprammonia solutions.
Patent GB-1026431-A (GB)
Title: Improvements in or relating to vehicle wheel pneumatic tyres of the replaceable tread type
IPC: B60C11/02
Filed: 1964-01-16
Abstract: 1,026,431. Pneumatic tyres. PIRELLI S.p.A. Jan. 16, 1964 [Feb. 2, 1963], No. 1975/64. Heading B7C. A pneumatic tyre of the replaceable tread type comprises a tyre casing 1 provided on its radially outer surface with at least three circumferentially extending, axially spaced ridges, the two outer ones forming locating shoulders, and a single tread ring 2 adapted to extend from shoulder to shoulder across the casing and provided on its radially inner surface with one or more circumferential grooves to accommodate the ridge or ridges 7, 8 of the casing which is or are axially spaced from the casing shoulders, the tread ring 2 being provided (a) with a plurality of axially spaced reinforcements 12, 13 disposed in the tread ring adjacent its radially inner surface and extending transversely of the tyre in a curve or curves over the axial regions of the tread ring defined by the groove or grooves, each reinforcement being constituted by parallel cords which extend substantially circumferentially of the tread ring, and (b) with at least two superposed strips 14, 15 of parallel cord fabric disposed radially outwardly of the reinforcements 12, 13 and having an axial width substantially equal to that of the tread surface, the cords of each strip making an angle ranging from 20 to 60 degrees with the mid-circumferential plane of the tyre. When the tread ring is provided with three or more axially spaced reinforcements the radius of curvature of the axially outermost reinforcements is smaller than the radius or radii of curvature of the remaining reinforcement or reinforcements in a transverse section of the tread ring. The casing has a radial cord carcass.
Patent GB-951189-A (GB)
Title: Improvements in apparatus for measuring currents
IPC: G01P13/02
Filed: 1963-01-16
Abstract: 951,189. Measuring fluid flow. PECHINEY COMPAGNIE DE PRODUITS CHIMIQUES ET ELECTROMETALLURGIQUES. Jan. 16, 1963 [Jan. 19, 1962], No.1994/63. Addition to 923, 418. Heading G1R. Relates to the parent Specification which claims an apparatus for determining the speed and direction of bodies of fluid comprising a body of revolution provided with a support member extending along its axis of revolution, gimbals secured to the support member whereby the support member is able to pivot independently about two perpendicularly intersecting axes of the gimbals suspension and means whereby the difference between the equilibrium positions of the support member about both axes can be measured when the fluid is at rest and when it is in motion. The invention in the present Specification is characterized in that the support member extends beyond the gimbals suspension and supports, in a longitudinally movable manner, a balance weight whereby the centre of gravity of the movable parts of the apparatus can be varied, the balance weight being connected with a motor for moving the weight longitudinally. 1 is a hollow body mounted on two rigid rods 2, 3 with a screw 5 extending between them in the same plane. The rods are set on gimbals 4 (one shown) and the balance weight 6 which slides unrotatably between them is pierced with a tapped aperture which is threaded into the screws. When the motor 7 is operated it moves the weight 6 along the screw until its position establishes a position of equilibrium for the body and rods corresponding to the flow condition in the fluid.
Patent GB-232532-A (GB)
Title: Improvements in gas burners for steam raising metallurgical and other industrial purposes, using rich gas
IPC: F23D14/00
Filed: 1925-01-22
Abstract: 232,532. Razen, Schaefer, et Cie. May, 17, 1924, [Convention date]. Atmospheric gas burners. - In a burner for furnaces, boilers, &c., gas is supplied through a chamber 1 to annular nozzles formed between concentric tubes 5, 6 and air through a chamber 3 and the tubes 5 to the centre, and through a chamber 10 to the periphery of each nozzle, the air supplies being regulated independently by hit-and-miss valves 4, 8. The burner is provided with a member 7 having openings corresponding to the tubes 5, 6 and leading to the combustion space.
Patent GB-1049635-A (GB)
Title: A novel polymeric product and a method for its manufacture
IPC: C08F259/04
Filed: 1964-01-17
Abstract: Moulded block polymers are made by mechanically working a mixture of a vinyl chloride homo- or co-polymer and a conjugated diene, with or without another unsaturated monomer, moulding the resulting polymer into the required shape and then vulcanizing it. As a vinyl chloride copolymer starting material there may be used a vinyl chloride/vinyl acetate copolymer.  Conjugated dienes and other unsaturated monomers specified are butadiene, isoprene chloroprene, styrene, vinyl acetate, acrylonitrile and methyl methacrylate. Also present in the mixture which is mechanically worked may be vulcanizing agents, plasticizers, stabilizers, fillers and pigments.
Patent GB-160050-A (GB)
Title: Improvements in connection with the attachment of picking bands to picking sticks in looms for weaving
IPC: D03D49/38
Filed: 1920-01-23
Abstract: 160,050. Mason, J. Jan. 23, 1920. Picking-straps and connections. - In a double picking-band 3 formed into a simple loop around the neck 2 of the picking-stick 1 and protected from wear by a loop 5 between the band and the neck, the picking- band is connected to the loop 5 by an I- shaped pin 6 of aluminium &c. passed through slits in the band and loop and given a quarter of a turn.
Patent GB-620634-A (GB)
Title: Improvements in or relating to high aperture objectives
IPC: G02B13/00
Filed: 1947-01-24
Abstract: 620,634. Optical objectives. KODAK, Ltd. Jan. 24, 1947, No. 2291. Convention date, Feb. 9, 1946. [Class 97 (i)] In an objective consisting of four airspaced components of which the first two are positive, each with its more strongly curved surface to the front and at least one being meniscus, the third component is negative and the fourth is a biconvex doublet, the sum of the three airspaces is between 0.2F and 0.5F, where F is the focal length of the objective, the overall axial length is between 0.65F and 0.85F, the second component is a doublet with a negative front element cemented to a positive rear element having a refractive index between 0.04 and 0.10 greater than that of the negative element, and the fourth component consists of a negative element cemented to a biconvex element having a refractive index between 0.12 and 0.30 greater than the negative element to which it is cemented. Data for two examples of the objective shown are given and it is stated that the first and third components may be compound. Specification 555,404 is referred to.
Patent GB-371447-A (GB)
Title: Improvements in or relating to record-controlled calculating machines
IPC: G06F7/46
Filed: 1931-01-23
Abstract: 371,447. Selective punching-machines. BRITISH TABULATING MACHINE CO., Ltd., Victoria House, Vernon Place, Southampton Row, London.-(Assignees of Bryce, J. W. ; Bloomfield, New Jersey, and Daly, G. F. ; Binghampton, New York, both in U.S.A.) Jan. 23, 1931, No. 2320. Convention date, Jan. 24, 1930. [Class 31 (ii).] A record-controlled statistical machine performs the computation a(b + c) or a(b - c) the final product being punched in the card bearing the terms of the computation. After passing the upper and lower brushes 22, 26 the card reaches punches 90, Fig. 4, each column of which has a pin 92 raised by bar 94 until arrested, by magnet 100 releasing pawl 98, opposite the correct punch. Subsequently, toggles 72 are cam actuated from the main drive to move crosshead 102 to the left to effect punching in all columns of the result. The multiplication is by partial products which are added together on to commutators 124 of counter RH, Fig. 11b ; this gives the final product and subsequently contacts 276 close so that the emitter EM3 sends correctly-timed impulses to the punch magnets 100.
Patent GB-1085525-A (GB)
Title: Improvements in the fermentation of tea leaf
Inventor: HOPPER FREDERICK AISTON
IPC: A23F3/08
Filed: 1964-01-20
Abstract: An apparatus for fermenting tea leaf comprises an elongated container having inlet and outlet ends, means for moving the tea from the inlet to the outlet, and means for passing an oxygen-containing gas through the leaf while it is in the container.  In one form the container is in the form of a tube, having a screw conveyer therein.  The shaft of the screw may be hollowed and pierced to admit the gas, and this hollow may contain means, such as a piston, to determine the point of entry of the gas to the tube.  In another form, the container is in the form of a channel, and the tea is moved along the channel by baffles to an endless belt moving above the channel.  In a third form, an endless conveyer, desirably with side walls and a perforated base, moves inside an enclosed space.
Patent GB-572495-A (GB)
Title: Improvements in or relating to exhaust silencers for internal combustion engines andlike apparatus ejecting exhaust gases
IPC: F01N3/06
Filed: 1944-02-08
Abstract: 572,495. Spark arresters. GANZ, H. Feb. 8, 1944, No. 2353. [Class 25] [Also in Group XXVII] In an exhaust silencer especially for marine and locomotive engines, but also applicable to furnace flues, a chamber 1 has (a) axially arranged inlet and outlet branches 4, 6, (b) approximately coaxial guide members, the first of which imparts a rotary motion to the gases and (c) orifices 5 provided in order that deposited solid particles may be blown into the stream and thereby reduced in size so that they do not settle. The orifices 5 are either arranged as shown at a place where negative pressure exists or they are provided with tubular extensions into the stream so that a portion of the untreated gases is blown through them. The guide members comprise opposed conical members 8 which are covered with sound damping material, e.g., asbestos, compressed glass wool, felt or rubber and may be filled with similar material. Two cages of guide members 7 are arranged one above the other but the lower one may be replaced by tapering blades arranged in an annular passage. A screw baffle may also be placed on the inside of the casing 1.
Patent GB-363865-A (GB)
Title: Improvements in vacuum cleaners
IPC: A47L9/04
Filed: 1931-01-24
Abstract: 363,865. Vacuum cleaners. MAUZ, W., 156, Zeppelinstrasse, PFEIFFER, P., 319, Am Krõherwald, HAHN, L., 37, Holderlinstrasse, and FABER, E., 148, Zeppelinstrasse, all in Stuttgart, Germany, (all trading as MAUZ & PFEIFFER)..Jan. 24, 1931, No. 2372. Convention date, May 21, 1930. [Class 8 (i).] A brushing roller for vacuum cleaners is provided with beating elements f of leather or other flexible material. To increase the beating action a rodg of heavy material may be inserted in the fold of the leather. The brush is revolved by a belt passing over the pulley b.
Patent GB-153271-A (GB)
Title: Improvements in or relating to hoods for vehicles
IPC: B60J7/12
Filed: 1920-01-26
Abstract: 153,271. Soc. Anon. des Anciens Etablissements d'Ieteren FrÞres. Oct. 29, 1919, [Convention date]. Void [Published under Sect. 91 of the .4ct]. Hoods.-Consists of hand or mechanically operated means for shortening a hood to enable it to fit into the body of a vehicle, or to shorten the overhang. Each side of the rear hoodstick is made in two parts 1, 3 joined by a hinge 2, and 'supported by an arm 6 pivoted at one end 5 to the rear stick and at the other end 7 to the body. The lower end of the part 3 is pivoted at 4, and the pivots 4, 7 are fitted to the interior of the housing for the hood. In lowering the hood, the parts 1, 3 pivot forwardly about pivots 4, 5. The arm 3 instead of being an extension of the stick may be disposed vertically when the hood is raised. The arms 3, 6 may be extended beyond their body pivots and the extensions connected by a spring facilitating the operation and allowing of control by means provided near the passengers.
Patent GB-554421-A (GB)
Title: A device for protecting a writing surface from weather conditions whilst writing thereon
IPC: B43L3/00
Filed: 1942-02-26
Abstract: 554,421. Manuscript books; book protectors. HUTCHINGS, G. N., and PIERSON, J. G. Feb. 26, 1942, No. 2516. [Class 16] A weather protector for a writing surface comprises a base board 3 with a block 4 at one end to which is hinged a window panel 7 in a frame 6 connected to the base by wedge panels 8 having a plurality of pleats 9 adapted to fold on to the base. Waterproof strips 14 - - 16 are secured by adhesive to protect the joints. The sides are made of waterproof material and are held extended by toggle struts 10 so that the hand can be inserted for writing. The base 3 carries a clip for holding a writing block 13.
Patent GB-1100291-A (GB)
Title: Improvement ferrite
IPC: C04B35/26
Filed: 1965-01-20
Abstract: 1,100,291. Magnetic compositions. CSFCOMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. 20 Jan., 1965 [22 Jan., 1964], No. 2603/65. Heading HlH. A magnetic ferrite material for high-frequency applications has the formula NiO 0-96 [(1-x) Fe 2 O 3 , x Al 2 O 3 ] 0.04 MnO a  z CoO where x lies between 0.1 and 0.2 and z lies between 0.03 and 0.04. In preparation the constituent oxides are mixed, crushed in H 2 O for 24 hours, dried and presintered at 900‹ C. for 2 hours. The product is then reground, dried, granulated by the addition of polyvinyl alcohol, pressed into shape under 1 ton/sq. cm., sintered at 127-1300‹ C. for 2 hours, and cooled at a mean rate of 100‹ C./ / hour.
Patent GB-1185281-A (GB)
Title: Device for Driving a Lantern Gear
IPC: F16H1/24
Filed: 1968-01-17
Abstract: 1,185,281. Toothed gearing. LOHMANN & STOLTERFOHT A.G. 17 Jan., 1968 [26 Jan., 1967], No. 2630/68. Heading F2Q. A lantern gear, comprising pins 6 supported between a pair of discs (11) (Fig. 2, not shown) to form the gear teeth, is driven by a pinion 1 mounted in a housing 2 which is anchored by a link 5 to a fixed point and which carries guide members 3 engaging axial extensions of the pins 6 outside the discs (11) to hold the pinion in mesh with the lantern gear. The pin extensions may be plain or may carry rollers 7, as shown. The guide members 3, arranged in pairs inside the pitch circle of the lantern gear, are pivoted at 4 to the housing 2. A third pair of guide members (3a) may be added outside the pitch circle of the lantern gear, adjacent the pinion 1 (Fig. 3, not shown). The pinion 1 is driven from an input shaft 10 via reduction gears 9, 8. The gearing may be used in the tilting drive of a steelworks converter.
Patent GB-1391908-A (GB)
Title: Separating adiponitrile from mixtures
IPC: C07C/
Filed: 1972-01-19
Abstract: 1391908 Purification of adiponitrile IMPERIAL CHEMICAL INDUSTRIES Ltd 16 June 1972 [23 July 1971 19 Jan 1972] 34624/71 and 2638/72 Heading C2C A process for removing 2-cyanocyclopenten- ( 1 )-ylamine from a mixture with adiponitrile comprises heating the mixture with water, substantially free of dissolved inorganic matter at 130-280‹ C. to hydrolyse the 2-cyanocyclopenten-(l)-ylamine, and separating adiponitrile from the resulting mixture. The starting mixture may be the low-boiling fraction obtained by distilling crude adiponitrile, prepared by dehydrative amination of adipic acid. The process may be applied to the continuous process for the manufacture and refining of adiponitrile.
Patent GB-395967-A (GB)
Title: Improvements in and relating to electric welding
IPC: B23K35/365
Filed: 1933-01-27
Abstract: A flux for use in arc welding contains felspar, a binder such as liquid sodium silicate, and either talc or titanium dioxide or both. The flux preferably consists of titanium dioxide 0 to 1 parts by weight, talc 1 to 0 parts, potassium felspar 1 part, and sodium silicate of the same weight as the combined weights of the aforesaid ingredients, and may also consist of cellulosic material such as cotton yarn, cloth, gauze, or braided cotton yarn impregnated with such mixture.  Sodium bicarbonate powder or a mixture of 1 part by weight thereof with 1 part each of titanium dioxide talc and felspar may be applied as a drying powder to coagulate the sodium silicate.
Patent GB-1507111-A (GB)
Title: Apparatus for generating aerosols of solid particles particularly inhalable aerosols of vaccines
IPC: A61B17/20
Filed: 1976-01-23
Abstract: 1507111 Syringes J-C OBERT 23 Jan 1976 [29 Jan 1975] 02683/76 Heading F1R [Also in Division B2]  An apparatus for generating aerosols of solid particles, particularly aerosols of vaccines, comprises a cylindrical chamber 8 whose two axial ends are closed by two flat walls perpendicular to the axis Z-Z 1  of the chamber, an axial outlet conduit 3 connected to one of the flat walls, and inlet nozzles 9 for compressed gas opening tangentially into the chamber; means for introducing a pulverulent product into the chamber, comprising one or more syringes which fit into fittings which hold them in fluid-flow communication with chamber 8 by means of channels 12, the syringes including plungers 31; and means for pushing the plungers. The means for pushing the plungers comprises a movable nut 14 fixed to a worm 15, the worm being rotated, e.g. by a motor 17, and the nut being movable up and down along the worm and a fixed rod 16, which prevents the nut rotating. Several fittings for attaching the syringe to the chamber are described and the syringes themselves are described as separate packages filled with the powder and being sealed until ready for use. The motor and the worm may be replaced by a hydraulic or pneumatic device.
Patent GB-1497701-A (GB)
Title: Method of and apparatus for making sandwich-like plastics elements
IPC: B29C48/345
Filed: 1975-01-22
Abstract: 1497701 Extruding foam laminate J DUKESS 22 Jan 1975 [24 June 1974] 2713/75 Heading B5A An extruded rectangular section sheet, of overall thickness of 0À01 to 1 inch, comprises a layer 62, Fig. 3, of cellular closed cell polyethylene, extruded from a die passage 20 simultaneously with an exterior enclosing sheath 74, 46, 48, of unfoamed polyethylene of a thickness of 0À005 to 0À002 inches. The sheet may be used for the stamping out of cap liners as in Specification 1496794. The side layers 74 may be trimmed from the extruded sheet. An extrusion screw 12 delivers the cellular polyethylene to the upstream end of the extrusion passage 20, and a further screw 22 delivers the unfoamed polyethylene to the passage 20 at an inlet 30 which extends across one width surface of the passage 20 at a location at which the passage is stepped, so that the passage upstream of the inlet 30 is of greater width and depth, to permit the unfoamed polyethylene from the inlet 30 to flow around and enclose the cellular polyethylene.