baber/WOPTO huggingface dataset:
Patent GB-934817-A (GB)
Title: Improvements in or relating to wideband transistor amplifiers
IPC: H03F3/19
Filed: 1960-06-01
Abstract: 934,817. Transistor amplifiers. PHILIPS ELECTRICAL INDUSTRIES Ltd. June 1, 1960 [June 4, 1959], No. 19408/60. Class 40 (6). In a video signal amplifier the effect of internal capacitances in the source 1 is corrected for by connecting the collector of a first transistor 2 to a tap 3 of a potentiometer 4 in series with selfinductance 5, the base of a second transistor 6 being connected to the supply line via the series combination of the potentiometer and inductance such that signals produced across the series arrangement are applied to the base of the second transistor. If the source 1, e.g. a camera tube, has a frequency characteristic which shows at high frequencies a fall in amplitude together with a phase lag then this is compensated for by the upper part 4a of the potentiometer together with the self-inductance 5 which produces a rise in amplitude and phase lead at high frequencies. Displacement of tapping 3 controls primarily the frequency at which the rise and phase lead of the combination 4a and 5 becomes significant. Any variation in the impedance of the signal source brought about by the changing of the camera can be compensated for by altering the tapping 3 of the potentiometer without influencing the flat frequency characteristic.
Patent GB-427013-A (GB)
Title: Improvements in and relating to the separation of specifically lighter and heavier components from liquid or gaseous mixtures
IPC: F22B37/26
Filed: 1933-07-08
Abstract: <PICT:0427013/III/1> Apparatus for separating lighter and heavier components from liquid or gaseous mixtures comprises funnels T and truncated conical annular baffles K arranged alternately in superposition in a vertical container thereby forming a zig-zag channel at their peripheries.  The tubes x of the funnels pass one within the other to give an injector action to accelerate passage of the mixture.  The narrowest cross-section of each tube x and that of each annular passage annular passage between two adapted to be smaller than any other cross-section wherethrough flow occurs. The baffles are spaced apart by shoulders, distance rings or ribs such that they may be adjusted and introduced into the container as a whole.  Where separation of heavier components is desired, the funnels and baffles are arranged pointing downwardly as shown with the flow from a lower inlet E to an outlet A.  The heavier sludge is removed at S.  For removing lighter components the direction of the funnels and baffles is reversed and the flow is from a higher inlet to a lower outlet, the lighter sludge being removed at the top.  Both these forms may be combined so as to remove both lighter and heavier components from a carrying medium. The invention is stated to be applicable for removing sludge or gas from boiler water, oil from condensates or steam or water, and dust from air or gases, and for the clarification of sludge and the recovery of fibre from waste water from a paper machine.
Patent GB-440550-A (GB)
Title: An improved process for the production of coatings of fluorine compounds on light metals and their alloys
IPC: C25D11/00
Filed: 1935-07-08
Abstract: 440,550. Electrolytic surface treatment of metals. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. July 8, 1935, No. 19488. Convention date, July 7, 1934. [Class 41] Light metals such as magnesium and aluminium and their alloys are provided with coatings containing fluorine compounds by anodic treatment in a fused bath containing a fluorine compound of low melting point and an oxygen compound of boron. A suitable bath consists of potassium bifluoride with a smaller quantity of boron trioxide or boric acid or both ; with a bath containing 30 per cent of boron trioxide, the electrolysis may be carried out at 165‹ C. The fused bath is preferably covered with a layer of an organic compound, such as paraffin, which is liquid at the working temperature and does not react with the bath. An alloy of magnesium containing small proportions of aluminium and zinc or of aluminium and manganese may be treated.
Patent GB-1385526-A (GB)
Title: Fibre glass reinforced components
IPC: H05K1/02
Filed: 1972-04-26
Abstract: 1385526 Light guides SIEMENS AG 26 April 1972 [28 April 1971] 19492/72 Heading G2J [Also in Division H1] A structural element, e.g. a printed circuit board, comprises a base material, e.g. of a plastics material, in which are embedded glass fibres for reinforcement, some, but not all, of the fibres being photo-conductive and extending throughout the element from one face to another. The photoconductive fibres may be arranged as a plurality of bundles, or the glass fibres may be a woven structure, in which case the photo-conductors may comprise the warp or the weft.
Patent GB-151430-A (GB)
Title: Improvements in or connected with pontoons for raising sunken ships and other objects
IPC: B63C7/06
Filed: 1919-08-07
Abstract: 151,430. Wiig, M. Aug. 7, 1919. Sunken ships, raising.-Pontoons for shipraising are provided with compressed air or gas reservoirs 2 detachably mounted upon and outside the pontoon.
Patent GB-297911-A (GB)
Title: An improved process for the manufacture of articles from aqueous dispersions containing rubber, gutta-percha, balata and similar resins
IPC: C08J5/02
Filed: 1927-07-25
Abstract: 297,911. Dunlop Rubber Co., Ltd., and Twiss, D. F. July 25, 1927. Moulding by dipping.- In depositing rubber &c., by dipping, from a concentrated dispersion which may contain fillers, mineral rubber, rubber reclaim and vulcanizing ingredients, the non- porous mould e.g. of glazed porcelain, glass or rubber, is moistened with a coagulant liquid e.g. a solution of calcium chloride, potash alum or formic or acetic acid. Common salt or sodium or calcium sulphate may be added to the dispersion. According to the Provisional Specification the. mould may be porous and the pressure within it may be reduced or it may be made of materials that promote coagulation.
Patent GB-883496-A (GB)
Title: Improved plant for the drying of fish
IPC: F26B21/02
Filed: 1959-06-09
Abstract: 883,496. Drying-presses. GRONDAL, B. June 9, 1959 [June 12, 1958], No. 19676/59. Class 34(2) A fish drying plant comprises a number of trays on which the fish are placed being assembled in groups, the trays of each group being positioned one above another so as to be alternately brought together for compression of the fish and spaced apart to allow the circulation of heated drying air between the trays, and the trays having on their upper sides with a soft yieldable cover with compressible projections or ribs for the support of the fish. The drying plant comprises a drying chamber 2, Fig. 2, wherein single rows of fish are arranged through doors 15 on trays 29, Fig. 3, in stands 14 for alternate compression between resilient coatings 30, 31 of porous rubber or the like on the trays and spacing to allow circulation of drying air between the trays from a heater 9 heated by steam, hot air or electricity and circulated through a channel 12 and a chamber 4 into the chamber 2 by a blower 6. The coatings on the upper sides of the trays have compressible ridges to allow the air to circulate beneath the fish through intermediate grooves 32 in the period of hot air drying and are resiliently formed to prevent damage to the fish tissue whilst being compressed. A supporting plate 18 at the bottom of each stand is raised or lowered by a yoke 19 which is positioned by screw spindles 20 operated through gearing 24, 25 and a shaft 26 driven either manually or, as shown, by a motor 27. The motor may have a time switch in its circuit or a relay actuated by spacing bushes 37 between the shelves to prevent excessive compression and the flow of air through the chamber 2 may be reversed by having the blower draw air from the chamber and the hot air introduced directly into the chamber through the channel 12.
Patent GB-685055-A (GB)
Title: Improvements in or relating to well drilling structures
IPC: E21B15/00
Filed: 1951-08-21
Abstract: 685,055. Derricks. MOORE CORPORATION, L. C. Aug. 21, 1951. [Aug. 22, 1950] No. 19683/51. Class 78 (iv). An oil-well drilling structure includes a substructure which has ramps for facilitating the raising of the foot of a reclining mast to the level of shoes on top of the substructure. Each ramp is a structural steel slab C including parallel cross members 17 which support an I-beam 18. Spaced plates 19, which extend along the top of each beam, form a channel to receive small rollers 22 mounted on the mast D. The end of each slab adjacent to a shoe 11 is connected by hinges 13 to the front crosspieces 4 of the substructure and the other end is secured to plates 14 on the ends of the upper beams by removable fasteners 16. When the fasteners are removed, the slabs descend through recesses formed in the frames until they rest on cross members 20. The rollers 22 are mounted in brackets 23 projecting from the lower legs of the mast.
Patent GB-466382-A (GB)
Title: Improvements in or relating to the cleaning of air and other gases
IPC: B01D47/02
Filed: 1936-07-16
Abstract: Gases are cleaned so as to remove solid particles therefrom by passage through a screen comprising an ester of phosphoric acid in the liquid state, e.g. tricresyl phosphate.  If the ester is normally solid it may be melted or dissolved; a water-soluble ester, as trimethyl phosphate, may be used where water vapour is not present or its removal is permissible.  The esters also remove vapours from the gases treated.  The ester may be applied to a filter, e.g. a cotton screen, used as a window filter, a block of porous stone, or a bed of mineral wool.  For carburetters of vehicles, a screen may be wetted by ester contained in an adjacent cup shaken by the travelling motion.  Various resins may be added to the filter base and assist adhesion.  For large volumes of air, the esters may be applied as spray screws without a porous base.
Patent GB-476514-A (GB)
Title: Improvements in the rubbers or clearers for the pressing rollers of machines used in the drawing of flax and other fibres for forming slivers or yarn
IPC: D01H5/62
Filed: 1936-07-17
Abstract: 476,514. Rubbers or clearers for flax &c. drawing-rollers. GREEVES, Ltd., J. & T. M., and EVES, J. V. July 17, 1936, No. 19809. [Class 120 (ii)] Rubbers or clearers for the pressing-rollers of machines for drawing flax, hemp, or jute preparatory to spinning are in the form of a scraper constituted by a row of metal fingers a with a chisel edge freely slidable in a holder A. An adjustable arm B or parallel linkage is provided to carry the holder ; as shown, the arm is pivoted in a bracket d on the swinging gib D and is adjusted by a screw b.
Patent GB-933737-A (GB)
Title: Improvements relating to telephone systems
Inventor: DRAKE BERNARD
IPC: H03G11/02
Filed: 1961-06-02
Abstract: 933,737. Automatic exchange systems. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. May 9, 1962 [June 2, 1961], No. 20014/61. Class 40 (4). [Also in'Group XL (c)] In a terminal arrangement for a 4-wire junction over which VF signalling is employed splitting or blocking amplifiers SSA, RSA, which are normally operative to connect the junction 1, 2 with the local circuits 3, 4 comprise two transistors TR1, TR2 and TR3, TR4 which are connected in push-pull and are brought into the non-conducting condition by the earthing of their bases at contact spc when a VF signal is sent or received. Each transistor is provided with a rectifier MR5, MR6, MR11, MR12 shunting the emitter-base junction to give protection against voltage surges, and further rectifiers MR9, MR10, MR13, MR14 protect against surges which would bring the collector potential to an excessive negative value. In the amplifier SSA, rectifiers MR7, MR8 shunting the windings of the input transformer T1 assist in maintaining the non-conducting condition. VF signals are applied to the junction from a generator G by way of a rectifier network SS which is changed from a high to a low attenuation condition by the earthing at contact sc of the centre-tap of winding II of output transformer T2. Incoming VF signals pass via winding III of input transformer T3 to signal receiver SR.
Patent GB-744979-A (GB)
Title: Improvements relating to fluorescent materials
Inventor: SERGEANT GEOFFREY
IPC: C09K11/67
Filed: 1952-08-08
Abstract: 744,979. Luminescent materials. SIEMENS ELECTRIC LAMPS & SUPPLIES, Ltd. Aug. 7, 1953 [Aug. 8, 1952], No. 20056/52. Class 39 (1). A fluorescent material, particularly for use in mercury vapour discharge lamps, consists solely of barium, silicon, titanium and oxygen in which the titanium content is 4 per cent or more by weight of the total weight of the final material. The material can comprise barium di-silicate and titanium in which the amount of titanium corresponds to approximately 0.25 mol. of titanium oxide per mol. of barium disilicate. The material can be prepared by mixing barium carbonate and silicon di-oxide in molar proportions lying between 2 : 1 and 1 : 4, adding titanium oxide in an amount to give 4 per cent or more by weight of titanium in the final material, mixing, grinding and firing the mixture at a temperature between 1000‹ C. and 1200‹ C. for approximately one hour, allowing the mixture to cool and then re-grinding and re-firing at the same temperature for approximately another hour. Separate silicates of barium and titanium can be formed, mixed and fired at a temperature between 1000‹ and 1200‹ C. Fluxes such as barium fluoride and/or chloride in an amount between 2 per cent and 4 per cent by weight of the other ingredients can be incorporated. Specifications 572,771 and 627,497 are referred to.
Patent GB-596788-A (GB)
Title: Improved process for the manufacture of granulated superphosphate
IPC: C05B1/02
Filed: 1944-10-17
Abstract: <PICT:0596788/III/1> Superphosphate is manufactured by introducing a thick slurry of finely divided phosphate rock and sulphuric or phosphoric acid or a mixture thereof, together with superphosphate fines, into a conditioning or nodulizing zone, drying the nodulized material, and subjecting the dried material to forced cooling.  A superphosphate containing from 20 per cent. to 48 per cent. available P2O5 may be produced, or only 80 to 90 per cent. of the acid used in the manufacture of a 20 per cent. availible P2O5 superphosphate may be employed.  As shown, the acid and rock dust are mixed in mixer 1 provided with an exhaust fan 4, the slurry being discharged on to conveyer belt 7 on a thin layer of superphosphate fines from conveyer &c. 8. The slurry and fines pass to conditioner and nodulizer 10 and on passing through, the mixture is sprayed with water from sprays 11. The interior is illuminated by a flood light 14.  The discharged nodules pass to a drier 16, being therein subjected to combustion gases from burner 18, which gases are discharged by fan 20.  The material is then cooled in cooler 22 by a counter current of air drawn in by fan 24, and passes to classifying screens 27, 28. Oversize particles pass to a grinding mill 29 and return to the screens via conveyer 30, and the fines via conveyer 8 to belt 7, or even directly to the conditioner 10.  Alternatively, the fines may be separated pneumatically into a fine fraction and a coarse fraction, the former being passed to the conditioner and the latter to the mixer.  The superphosphate may be employed for the manufacture of phosphoric acid by the process of Specification 549,487. Specifications 530,244 and 559,482 also are referred to.
Patent GB-320138-A (GB)
Title: Improvements in or relating to files, rasps, and like tools
IPC: B23D71/00
Filed: 1928-07-10
Abstract: 320,138. Tilley, R. G. July 10, 1928. Tools.-A planing or like cutting tool of the kind comprising a number of plates or cutting elements adjustably mounted in a frame or on rods &c. so that they may assume two positions, in one of which the cutting edges are given the correct clearance while in the other the cutting edges all lie in a plane so that they may be ground, the cutting elements are mounted in spaced relationship on the supporting member or frame. Several constructions are described and in one form, for sharpening pencils or for other purposes, the blades 4, Fig. 10, are integrally or otherwise provided with pivots 4d engaging recesses in a pair of parallel rods 13 and pivots 4e engaging recesses in a pair of parallel rods 15 which are capable of being displaced longitudinally with respect to the rods 13 to enable the blades to assume their two positions Means such as a pin 16 provide for locking the blades in either position.
Patent GB-183483-A (GB)
Title: Improvements in aircraft
IPC: B64C29/00
Filed: 1922-07-22
Abstract: 183,483. Pateras Pescara, Raul, Marquis of. July 23, 1921, [Convention date]. Aeroplanes; helicopters; planes, arrangement of; propelling.-A machine is supported by a pair of surfaces geared to rotate in opposite directions about a slightly inclined axis but normally locked in parallel relation to one another to act as planes, the surfaces being left free to rotate at starting or alighting to ensure a slower forward speed. The surfaces are of symmetrical outline, are set at right angles to their axis of rotation, and have no external bracing. Fig. 3 shows a machine similar to that described in Specification 172,327, but for the purpose of giving the blades an angle of incidence the central column would normally be inclined instead of vertical. The hubs 45, 46 of the surfaces are geared together by bevelwheels 17, 18, 19, 20. Conical members 51, 52 splined to the hubs are adapted to be moved into contact with fixed cones 55, 56 by means of sleeves 49, 50 operated by a lever 16 through the linkage shown, to slow down the rotation of the surfaces when required. When slowed down sufficiently, a reverse movement of the lever 16 brings the sleeves 49, 50 into engagement with projections 47, 48 on the hubs so that they rotate therewith. Each sleeve is coupled, as shown in Fig. 4, to a piston 67, which displaces oil from a cylinder 77 into a cylinder 78 containing compressed air arranged above it, and towards the end of the stroke a projection 82 on the piston compresses a strong spring 81 so as to absorb any remaining energy of rotation. As this occurs, a projection 68 on the sleeve passes a spring-pressed pawl 69 on a plunger 70, which works in a cylinder 71 against an adjustable stop 74 under the pressure of a spring 72. Recoil of the spring 81 is thus absorbed and the collar brought to rest in a definite position. The machine has a tractor screw, and is fitted with a rear rudder and elevators, and with a lateral balancing rudder above the rotating surfaces. It is mounted on a fourwheeled undercarriage.
Patent GB-479187-A (GB)
Title: Improved lens system for attachment in front of a photographic objective
IPC: G02B15/00
Filed: 1937-07-21
Abstract: 479,187. Lenses. SCHNEIDER, J. A.. (trading as SCHNEIDER & CO. OPTISCHE WERKE, J.). July 21, 1937, No. 20245. Convention date, May 4. [Class 97 (i)] A lens system to be placed in front of a photographic objective in order to alter the focal length without displacing the image plane, comprises two or more air-spaced members corrected for spherical and chromatic aberrations, coma, and astigmatism, the surface Rz facing the objective being strongly dispersive, and the system having, on the object side, a collective element V separated by an air space from a collective surface Rs. The radius of the surface Rs lies between 0À3 and 1À3 times the diameter of the element V, and its focal length is between À2 and À8 of that of the element V ; the radius of the surface Rz lies between 0À3 and 1À3 times the radius of the surface Rs. The surfaces of the element V, and the surface Rs have radii of the same sign as that of the surface Rz. The system includes a cemented surface R4, the radius of which is not smaller numerically than that of the surface Rz. The vertex length of the system is less than 1À3 times the diameter of the element V. As shown the surfaces Rs, Rz are part of the same member ; in a modification the surface Rz is on a separate lens, the system then comprising three air-spaced members. Data are given for three examples.
Patent GB-436474-A (GB)
Title: Improvements in heat-transfer apparatus, such as water-tube boilers, having field tubes
IPC: F22B23/00
Filed: 1934-07-11
Abstract: 436,474. Field and loop tube heatexchangers. LEWIS, W. Y., 17, Woronzow Road, St. John's Wood, London. July 11, 1934, No. 20354. [Class 64 (iii)] The inner tube 3<a> of a Field-tube used in boiler or other heat-exchanger is formed of two or more lengths connected together by a flexible coupling 5. The coupling may consist of a closely wound coil of spring wire, which may be screwed on the ends of the tube lengths or which may be secured by bending over the ends of the wire to engage the spacing fins 3<c> on the tube lengths. A flexible tube may be inserted on each limb of the U-tube fitted with inner tubes as described in Specifications 380,548 and 434,023.
Patent GB-134403-A (GB)
Title: Improvements in Travelling Cases, Binocular Cases and other Receptacles Made of Leather.
Inventor: COWGILL HENRY
IPC: A45C5/02
Filed: 1918-12-07
Abstract: 134,403. Cowgill, H. Dec. 7, 1918. Moulded boxes; straps and bands, strengthening.-A leather travelling-case, binocular case, razor case, &c., is formed of two seamless halves connected by a hinge, each half being formed by moulding the leather under pressure and then hardening and waterproofing it. The case may be stiffened by a thin strip of metal secured to the inner edge cf the body portion or of the lid.
Patent GB-1114946-A (GB)
Title: Excavating machine
Inventor: KAVALEROV ALEXANDR ALEXEEVICH
IPC: E02F3/20
Filed: 1966-05-09
Abstract: 1,114,946. Earth-excavating m/c. OSOBOE KONSTRUKTORSKOE BJURO NOI. 9 May, 1966, No. 20438/66. Heading E1F. To reduce wear of the confining housing defining the ejection point of a rotor thrower of an earth-excavating machine having an excavating unit formed by a profiled slicing edge from which sliced away earth is delivered into the housing into the path of the radially extending, circumferentially spaced blades of a rotor within the housing, the housing is formed with a plate curved to the circumferential periphery of the rotor and statically disposed below the rotor to extend part way to the ejection point. Between the end of the plate and the ejection point is an endless belt which is driven in step with and by the rotor due to the adhesion of the earth in the rotor with the belt. The idler and reversing pulleys controlling the path of the endless belt are formed from elastic material. Preferably two belts are arranged symmetrically of the rotor to allow of reversal of direction of rotation of the rotor and ejection of earth to one side or the other of the machine.