baber/WOPTO huggingface dataset:
Patent GB-651450-A (GB)
Title: Process of activating chlorite solutions and bleaching cellulosic materials with these solutions
IPC: D06L3/08
Filed: 1947-12-03
Abstract: Cellulose acetate dissolved in acetone is passed through a vertical column counter-current to an aqueous solution of sodium chlorite at pH 10.5.  The cellulose acetate is thereby precipitated in the form of a fine powder and bleached by the chlorite.ALSO:Cellulosic material is bleached by means of a chlorite solution which has been activated by adding acetone thereto.  The initial pH of the solution should be comparatively low, e.g. pH 7 and/or the concentration of the acetone should be high.  The process is applicable also to the bleaching of cellulosic materials, e.g. cellulose acetate, in solution in the acetone.ALSO:Solutions of chlorites, e.g. sodium chlorite, are activated by adding acetone thereto.  The initial pH of the solution should be comparatively low, e.g. pH7, and/or the concentration of the acetone should be high.
Patent GB-1154733-A (GB)
Title: Improvements relating to Jewellery Clasps
Inventor: WALDRON TERENCE JOHN
IPC: A44C5/20
Filed: 1966-06-07
Abstract: 1,154,733. Hook fastenings. MAURICE LIPKIN & CO. Ltd. 17 May, 1967 [7 June, 1966], No. 25307/66. Heading E2A [Also in Division A3] A clasp for a necklace comprises iriterengaging hinged parts 10, 11, the part 10 having two sets of hooks 20 to engage removably eyelets 30 on the ends of strands 25, 26 and 27 of pearls or the like. The hooks on one side may be closed to engage the eyelets permanently. Alternatively one or both end or ends of the strands are attached to a plate which has a series of holes which removably engage posts secured to the part 10.
Patent GB-1273752-A (GB)
Title: Color television receiver
IPC: H04N9/71
Filed: 1969-05-19
Abstract: 1,273,752. Colour television. R.C.A. CORPORATION. 19 May, 1969 [22 May, 1968], No. 25379/69. Heading H4F. In a colour television receiver in which the control electrodes of the cathode ray tube are coupled to the respective chrominance channels by capacitors 72 and are returned to a reference D.C. potential during the horizontal retrace time by synchronous clamps activated by pulses from a vision blanking circuit, the chrominance channels are usually gated off at each horizontal sync pulse so as not to pass the colour burst, but such gating action produces a pulse which may disturb the relative and absolute quiescent output levels of the chrominance channels and cause the control electrodes to be clamped at an erroneous D.C. level, giving a wrong overall colour balance. In the present invention, further pulses from the blanking circuit are applied to a non-gated portion of the chrominance channels and are of an amplitude and polarity such as to cancel the pulse produced by the gating. By varying the amplitudes of the further pulses the colour balance of the picture may be selectively controlled and the tint of a monochrome picture may, or may not be, simultaneously controlled. In Fig. 2, the output of a chrominance amplifier 22, with the colour burst removed, is fed to one (of two) balanced diode demodulators, producing B-Y information at the grid of a valve 65 which feeds the B-Y grid via capacitor 72. During horizontal retrace, A negative pulse from blanking circuit 15 clamps the B-Y grid, via diode 74, to a reference D.Z. potential determined by the size of the pulse and the setting of potentiometer 77. When amplifier 22 is gated off, a spurious pulse appears at the grid of valve 65 which is compensated by application to the valve cathode of a pulse from the blanking circuit of suitable polarity and of an amplitude determined by the setting of potentiometer 81. A similar technique is used in the R-Y channel, but is of course unnecessary in the G-Y channel where the signal is produced by matrixing the outputs from the R-Y and B-Y valves 15. During monochrome transmissions, the valves 65 are held inoperative by a colour biller circuit 41 so that the spurious and compensating pulses do not appear at capacitor 72 and a correctly set black and white picture is produced. If the colour biller circuit is applied at 65 are operative during monochrome transmissions, both types of pulse appear at capacitor 72, and the colour balance will be the same as during colour transmission i.e. giving tinted pictures if desired.
Patent GB-243685-A (GB)
Title: Improvements in tuned transformers
IPC: H03H7/01
Filed: 1925-10-13
Abstract: 243,685. Radio Industries Corporation, (Assignees of Fitch, C. J.). Nov. 28, 1924, [Convention date]. Tuning apparatus, construction of. - Transformers for use in intermediate amplifier circuits of receiving apparatus are housed in casings which contain also variable condensers connected across the secondary terminals to enable tuning adjustments to be made according to the operating frequency. The transformer windings 8, 9 are disposed on a laminated iron coil 10 and on opposite sides on a support 11 exfending across the lower portion 12 of an insulating casing. The ends 13, 14 of the casing are secured in position by bolts 7 which are extended to secure in position an extension 6 in which is housed the variable condenser. The latter consists of a pair of plates 23, 24 separated by a sheet of mica 25. the upper one being bowed and adapted to be forced into closer proximity to the lower one by a nut 27 which is prevented from rotating by upstanding lugs 28 on the plate 24 and engaged by a screwed operating spindle provided with a knob 31 external to the casing.
Patent GB-1349315-A (GB)
Title: Thread delivery and control device
IPC: B65H51/22
Filed: 1972-06-02
Abstract: 1349315 Knitting machines K I J ROSEN 2 June 1972 [8 June 1971] 25942/72 Heading D1C When a stop motion 9, placed between the bobbin and a thread storage feeder 4, indicates a broken thread, an electrical circuit allows the machine to stop only at a chosen point in its cycle, sufficient thread being stored to permit the machine to continue knitting until then. In a flat knitting machine 1 the stopping points will be the points of reversal. In Figure 3 the stop motion operates a relay A to close a switch a, but until the cam 10' closes the contacts 16 the relay B will hold switch b closed allowing the motor 13 to continue to operate. The cam may be driven by any convenient shaft in the machine, and may have several contact closing sections if the machine can be conveniently stopped at several positions.
Patent GB-1041264-A (GB)
Title: Improvements in or relating to storage and transport containers
IPC: B65D21/032
Filed: 1963-07-01
Abstract: 1,041,264. Collapsible boxes. HUTTENWERK OBERHAUSEN A.G. July 1, 1963 [July 2, 1962], No. 25963/63. Heading B8P. A container consists of a base 1, detachable uprights such as the corner posts 2 and a frame 9 which rests on the uprights and carries collapsible side walls 3 made of wire netting. The sides may terminate above the base and be joined by a suspended bottom 7 either of netting or in the form of a rigid plate. Alternatively, the walls may reach down to and be secured to the base 1.
Patent GB-534977-A (GB)
Title: Improvements in keys for typewriting machines
IPC: B41J5/12
Filed: 1939-09-19
Abstract: 534,977. Typewriter key discs. ROYAL TYPEWRITER CO. Inc. Sept. 19, 1939. No. 26181. Convention date, Oct. 1. 1938. Drawings to Specification. [Class 2 (iii)] [Also in Group XVI] A typewriter key disc of methyl methacrylate plastic is mounted in a cup and is retained by co-operation of a projection and recess, the key being assembled by pushing the disc into the cup until the projection snaps into the recess. Specification 534,976 is referred to.
Patent GB-162590-A (GB)
Title: Improvements in and relating to tobacco pipes
IPC: A24F5/04
Filed: 1920-09-13
Abstract: 162,590. Templeton, J., and Harris, T. B. Sept. 13, 1920. Tobacco pipes.-The bowl is formed with a number of fine perforations A, which admit air to the tobacco, are arranged in rows or series in the sides of the bowl, and may be inclined to the axis of the bowl.
Patent GB-826733-A (GB)
Title: Improvements in and relating to compasses
Inventor: HAMBURGER GERHART LOTHAR
IPC: G01C17/26
Filed: 1955-09-13
Abstract: 826,733. Electric transducers. HARTLEY ROBERTSON Ltd. Sept. 13, 1956 [Sept. 13, 1955], No. 26227/55. Class 40 (1). [Also in Groups XX and XXXVI] A compass card 14 (Fig. 1) carrying two bar magnets 18 and mounted on a pin 16 in a pivoted bowl 10, consists of a disc 20 of dielectric material having printed on each face two copper spirals 25A, 26A (Fig. 2) and 25B, 26B (Fig. 3), and two capacitor plates 23A, 24A and 23B, 24B, the components being connected in series/ parallel from lead 29A to spiral 25A, through a central drop of solder 27 to spiral 25B, to capacitor plates 23B, 24B in parallel, from opposite capacitor plates 23A, 24A in parallel to spiral 26A, through a central solder drop 28 to spiral 26B and out via lead 29B, the whole making a series-tuned circuit which couples with a fixed plate 33 carrying further printed inductors, whereby a signal taken from the inductors of card 33 is indicative of the angular position of the compass card 14. The printing is produced on layers of copper foil bonded to each side of the dielectric material 20 with a greasy ink, and the uncoated copper is etched away by an aqueous ferric chloride solution.
Patent GB-710063-A (GB)
Title: Improvements in methods of continuous centrifugal separation and centrifugal separators therefor
IPC: B04B1/08
Filed: 1952-10-21
Abstract: 710,063. Centrifugal separators. AKTIEBOLAGET SEPARTOR. Oct. 21, 1952 [Oct. 26, 1951], No. 26398/52. Class 23 A liquid mixture is separated into three components in a separator having outlets for the continuous discharge of each component, and regulating means adjustable during separation -are provided for one of the outlets to permit the adjustment of the boundary between two of the components within the separator. In the separator shown in Fig. 2 the mixture is supplied through the distributer 1 and the components discharged through the outlets 2, 3, 6. A radially adjustable skimming tube 8 controls the position of the boundary 9. A separator having means for adjusting both boundaries 21, 22 and suitable for refining fatty oil is shown in Fig. 4. The mixture of oil, alkali and salt water is supplied to the separator through the hollow shaft 15, oil, soap, and spent lye being discharged through outlets 14, 16, 19 respectively. A valve giving constant pressure is placed in the outlet 14, a radially adjustable skimming tube 20 is provided for the outlet 19, and the outlet 16 is unobstructed to prevent clogging of the soap.
Patent GB-208808-A (GB)
Title: Improvements in or relating to saddle and like clamps, for cab tyre, metal and like sheathed electric conductors
IPC: F16L3/04
Filed: 1922-09-30
Abstract: 208,808. Kirk, A., and Milliken, R. C. Sept. 30, 1922. Clamps, screw, suitable for sheathed electric conductors, are formed from fibre, fibrous composition, or other non-metallic material and comprise a body portion b with a hole c for the passage of a securing screw or the like and a lateral arm e with an inward projection f forming a transverse groove for engaging the conductors.
Patent GB-173038-A (GB)
Title: Improved carburetter for internal combustion engines
IPC: F02M17/14
Filed: 1920-09-16
Abstract: 173,038. Bench, B. Sept. 16, 1920. Spray carburettors. -In a floatless carburettor, a manuallyactuated tubular valve b is adapted to slide in a casing a to control air-inlet ports t at the bottom thereof and a mixture outlet port at the top. The valve is actuated by a Bowden cable attached to a bridgepiece c. The nozzle n is closed when no suction occurs by a valve j, a conical needle-like extension o of which works in conjunction with an adjustable constricted passage. The valve carries a fibre washer h or a gauze cap and is extended to pass through the bridge c and the cover e, the extension being arranged to strike the head of an adjustable screw f to limit the lift of the valve. Between the bridge c and washer h are a closely wound coil k and the spring l, and between the bridge and cover e, a spring d and a coil w closely wound around the valve extension to act as a stop. Extra air ports at y allow air only to pass to the engine. At starting, the throttle is raised to contact with stop w to lift the valve and flood the carburettor; the throttle is then returned to half close the outlet port u when the washer h and fuel valve are lifed by the air current. Fuel enters at p, a split ring m secures the outlet v to the induction pipe, and the fuel inlet chamber is secured by a gland nut r.
Patent GB-265270-A (GB)
Title: Improvements in couplings or the like
IPC: F16D7/02
Filed: 1925-10-23
Abstract: 265,270. Woodhouse, A. E. Oct. 23, 1925. Shaft couplings; universal joints; securing pulleys &c. on shafts. -Coupling-means for connecting two shafts, or a pulley &c. to a shaft, comprise a coil or coils arranged to grip the driving and driven members, or to be secured to one member and grip the other (usually a shaft), the coil or coils being tightened by one or more screws or wedges associated with a connecting-medium common to both ends of the coil. The connecting-medium may itself be a flexible band, chain, &c. wound reversely to the coil; the tightening-means may act through a spring or springs to prevent overstrain or to allow slip on overload; and, where wedge tightening-means are used, the connecting-medium may take the form of a sleeve, which may be the recessed hub of the pulley &c. to be secured to a shaft, or mav be cut into helical form. A flexible-band connector mav be used in conjunction with a sleeve. As applied to a shaft coupling, a coil a, Figs. 2 and 3, of two convolutions grips the shafts o, o<1>, its hooked ends c, c<1> being connected by a chain r, surrounding an interposed sleeve b slotted for passage over the coil ends. The coil is tightened by a wedge m driven under a large. solid link s of the chain, or by radial screws passing through solid links and pressing on the sleeve. The hub of a pulley &c. e, Fig. 4, is provided with a helical recess k for the coil and with slots l for the tightening-wedge m and a similar wedge acting as a key for the coil end c<1>, the ends c, c' being doubled back or otherwise thickened to engage the wedges. The parts are held in place by a cap p or by screws, pins, wedges, current, &c. One or more packing-pieces n may be provided under the wedges, which may each comprise several superposed thin wedges. Where the coupling is in multiple form, the connectors may be flexibly coupled together. The coupling may be modified for connecting shafts of different diameters, for allowing relative angular movement, and for employing expanding coils. Laminated coils, with their ends welded &c. together. and coils coated with emery cloth or with paint containing emery &c. may be used. One of the Provisional Specifications describes forms in which tightening is effected by the engagement with the coil ends of screws carried by a sleeve, or of the halves of a split sleeve drawn together by bolts &c.
Patent GB-966500-A (GB)
Title: Hermetically encased motor compressor unit
IPC: F25B31/02
Filed: 1962-07-11
Abstract: 966,500. Compressors. R. HINTZE. July 11, 1962 [July 13, 1961], No. 26716/62. Heading F1N. The stator 1 of a hermetically sealed motor compressor unit comprises a plurality of superposed flat plates lying in parallel planes perpendicular to the axis of the rotor and having dimension in one direction perpendicular to the axis shorter than in the other direction and the compressor casing has two parallel wall portions lying one on each side of the stator and two wall portions lying on each side of the compressor 5, one of said latter walls being inclined towards the compressor.
Patent GB-879810-A (GB)
Title: Acrylonitrile polymer spinning compositions
IPC: D01F6/18
Filed: 1960-08-03
Abstract: Compositions which can readily be prepared for spinning are made from polymers containing at least 70% by weight of acrylonitrile and prepared by aqueous polymerization by filtering the aqueous polymer slurry to form a wet filter cake, washing the cake with an aqueous solution containing from 75%-90% by weight of dimethyl-formamide, dimethylacetamide or dimethyl sulphoxide, and filtering to remove sufficient liquid from the washed polymer to provide a mixture having a solids content of from 50%-60% by weight and a water content of from 5%-15% by weight.  When the resulting mixtures contain 7,5%-12,5% of water, they may be heated to 170 DEG -200 DEG C. and extruded directly through a spinneret. Alternatively, there may be added to the mixture from 25%-60% of one of the above-mentioned organic solvents, followed by heating to from 90 DEG -150 DEG C. to form a spinning solution.  The acrylonitrile polymer used may include copolymerizable monomers such as methyl acrylate, methyl and butyl methacrylates, acrylyl chloride, methacrylamide, vinyl acetate, vinyl trimethyl acetate, methyl vinyl ketone, styrene, dimethyl itaconate, diethyl maleate, vinyl pyridine, vinyloxyethyl formamide, salts of styrene sulphonic acid and other monomers described in Specifications 586,796, 586,881 and 765,585.
Patent GB-676452-A (GB)
Title: Improvements in devices for use in casting concrete within shuttering
IPC: E04G17/065
Filed: 1949-10-19
Abstract: 676,452. Screw threads. TAYLOR, C. A., and RAWLPLUG CO., Ltd. Oct. 19, 1950 [Oct. 19, 1949], No. 26900/49. Class 80 (iii). [Also in Group X] A tie for shuttering for casting concrete comprises an internally threaded socket 2, formed of a closely wound helical coil engaged by a bolt 1, the thread of which is of semi-circular cross-section so as to mate closely with the socket and thus prevent entry of concrete.
Patent GB-1089864-A (GB)
Title: Removal of sulphuryl fluoride from sulphur hexafluoride
Inventor: MASSONNE JOACHIM
IPC: C01B17/45
Filed: 1965-06-25
Abstract: Sulphuryl fluoride is removed from gaseous or liquid mixtures containing sulphur hexa-fluoride by contacting it with alumina or a solid oxide, hydroxide, carbonate or aluminosilicate of Na or Mg or of an element of the main groups I or II of the Periodic System of elements. Sodium hydroxide, potassium hydroxide, soda lime, potash lime, calcium oxide, magnesium oxide, sodium aluminate or synthetic sodium aluminium silicate are referred to.  The mixture may be gaseous in which case the process is carried out at 0 DEG  to 350 DEG C. or liquid in which case the temperature is - 50 DEG  to + 45 DEG C. Sodium and potassium hydroxides may be applied to a substrate having large surface area or powdery active substances may be used in a granulated state.  In the gaseous phase the mixture is passed through a tube of the material and in the liquid phase the reaction may take place in a steel compressed gas cylinder, a pressure flask or a storage container.
Patent GB-1197907-A (GB)
Title: Improvements in and relating to Moisture Responsive Devices for use with Gaseous Fluids
Inventor: ORPET EDWARD GEORGE
IPC: G01N27/22
Filed: 1967-06-12
Abstract: 1,197,907. Measuring moisture content of gases, electrically. ENERGY CONVERSION Ltd. Sept. 12, 1968 [June 12, 1967], No.27023/67. Heading G1N. The moisture content of a gas is measured by passing the air through a capacitive sensor comprising a pair of concentric cylindrical electrodes 3, 4 connected to an r.f. oscillator for controlling the frequency thereof, the other frequency determining components of the oscillator being housed within the sensor. In Fig. 1, two identical sensors are provided: one may be filled with a dry gas sample and sealed; or they may be connected to the gas inlet and gas outlet respectively of the oxidizing electrode of a fuel cell and the beat frequency of the oscillators used as a control signal to maintain the water content of the cell constant. An electrical resistance heater may be wound on the outer wall of the sensor. The electrodes may be gold plated.
Patent GB-635106-A (GB)
Title: Improvements in or relating to semi-rotary liquid-driven motors
IPC: D06F13/00
Filed: 1947-10-08
Abstract: 635,106. Semi-rotary engines. GRANOWSKI, O A., and GRANOWSKI, L. W. Oct. 8, 1947, No. 27030. [Class 110(ii)] A liquid-driven engine, which may be used to drive a domestic washing machine 30, comprises a pair of piston vanes 19, 20 which oscillate between abutments 16, 17 and a piston valve 36, actuated by the vane movement, to control flow into the working chamber, and discharge therefrom, of working fluid. The rotor 18 is supported on a stationary shaft 10 which contains inlet and outlet passages 11, 12. The lower end of the vane 20 is attached to a segmental valve plate 25. provided with flanges 26, 27, on either side of the vane 20. Driving liquid passes from the passage 11, through ports 47, 48 to the valve chamber 35 to force the valve 36 to the other end of the chamber 35. At the same time the space at the opposite end of the chamber 35 is put into communication through passages in the base 33 leading to the outlet 12. Liquid is also admitted to the working chambers, and discharged therefrom, under control of further pistons on the valve 36. Mains water may be used as driving liquid.
Patent GB-764585-A (GB)
Title: Improvements in indoor decorations
IPC: A47G33/08
Filed: 1952-10-28
Abstract: 764,585. Confectionery and sweetmeats. ASSOCIATED WAFER PAPER CO.'S, Ltd., and BARTIER, A. A. C. Jan. 12, 1954 [Oct. 28, 1952], No. 27054/52. Class 28(1) [Also in Group XV] Indoor decorations are formed by the assembly of several elements of different colours at least some of the elements comprising thin, part spherical shells and comprising a suspension element in the form of a loop of yarn attached to the assembly. As shown in Fig. 1, a number of dish shaped elements A with flanges b are joined and suspended by a loop of yarn c. The elements are made from edible material such as rice paper or wafer paper. The elements may enclose sweetmeats or edible powders. Various arrangements of the elements are described. End cap members d, Fig. 7, may be secured to the elements A and spacers e, Fig. 8 may be provided between elements. The elements may be arranged to give a petal effect.
Patent GB-142038-A (GB)
Title: Method and means for the manufacture of artificial silk
IPC: D01D4/02
Filed: 1919-11-05
Abstract: 142,038. Stulemeyer, C. L. Nov. 5, 1919. Apparatus for making filaments.-The spinning jets or nozzles 3, or holders 1 therefor, of apparatus for the manufacture of artificial silk from viscose, &c., are made of molybdenum. The perforated plate 3 constituting the nozzle may be secured to its holder by couplings 6, 7, Fig. 1, also of molybdenum; and the construction may be simplified by forming the part 7 integral with the holder, as shown in Fig. 3, or the plate 3 may be.integral with the holder 1, as shown in Fig. 5.
Patent GB-248817-A (GB)
Title: Improvements in or relating to steam boiler furnaces
IPC: F23L9/00
Filed: 1924-11-14
Abstract: 248,817. Whitfield, C. Nov. 14, 1924. Firebridges; firebars. - The grate of a boiler furnace is formed of hollow firebars a bent to produce a dip or depression whereon a thick bed of fuel may lie, air passing through the bars to the space behind the firebridge b and between incandescent blocks e of refractory material, to mix with the gases from the fuel and complete the combustion. The air for primary combustion, supplied between the firebars, is regulated to produce CO, which is burnt behind the firebridge. The refractory blocks e are attached by side plates f to bars c hinged to a common rod d and resting on a support g; the blocks may be bevelled on each side to leave narrow slots for the air passing between them. These slots may extend transversely of the flue.