baber/WOPTO huggingface dataset:
Patent GB-570284-A (GB)
Title: Improvements in centrifugal spinning buckets
IPC: D01D7/02
Filed: 1943-12-06
Abstract: <PICT:0570284/IV/1> <PICT:0570284/IV/2> <PICT:0570284/IV/3> <PICT:0570284/IV/4> A centrifugal spinning pot or bucket 2, Fig. 1, has a package-supporting member 10 reciprocable therein, the hub 3 of the bucket 2 being grooved at 6, Fig. 4, and reciprocable means, such as rods 9 fitting within the grooves 6, being provided for reciprocating the member 10 to facilitate removal of the package. The rods 9 are secured to a collar 8, Fig. 5, and may, if desired, be fixed to the member 10.  The collars 8 for a set of spinning devices may be lifted by a rail 12, Fig. 2, formed by parallel bars 13 and operated by a pedal.  Specification 564,718, [Group IX], is referred to.
Patent GB-151796-A (GB)
Title: Improvements in motor attachments for cycles
IPC: B62M9/00
Filed: 1919-08-19
Abstract: 151,796. Turner, W. Aug. 19, 1920. No Patent granted (Sealing fee not paid). Clutches, arrangements and applications of; wheel-driving attachments.-In a motor attachment for pedal cycles the engine 7 drives the road wheel through an intermediate spindle 3 and a double train of disconnectible chain gearing. The spindle 3 is stationary and carries two chainwheels 4, 10, loose thereon, which are formed with inter-engaging clutch teeth 12. The wheel 4 slides on the spindle and is disengaged from the wheel 10 by a hand-lever 15 having cams 26 which operate spring plungers 27. The chainwheel 19 on the road wheel is secured to the spokes of the latter by bolts 21 and a two-part ring 30<a>.
Patent GB-979543-A (GB)
Title: Unsaturated aliphatic aldehydes
IPC: B01J8/06
Filed: 1961-06-06
Abstract: A C3- 6 unsaturated aliphatic aldehyde is obtained by reacting an olefin of corresponding carbon atom content with oxygen in the presence of a fixed bed oxidic catalyst in an externally cooled tube at least 5 metres long and internal diameter 20-75 mms., the flow velocity of all reactants being at least 30 cms./sec. based on the empty tube at N.T.P.  The preparation of acrolein and a -methyl acrolein from propylene and isobutylene is described using a catalyst of the oxides of bismuth and molybdenum supported on silica.  The olefine can be diluted with up to four times the amount of the saturated corresponding hydrocarbon.  Specification 723,003 is referred to.
Patent GB-248638-A (GB)
Title: Method of and means for automatically regulating the water level in steam boilers
IPC: F22D5/18
Filed: 1925-08-14
Abstract: 248,638. Marks, E. C. R., (Schmidt'sche Heissdampf-Ges.). Aug. 14, 1925. Feedwater, supplying and controlling; hot-water storage apparatus.-In steam generator of the kind in which, on an increase of load, the water stored between the highest and lowest levels is utilized and the feed supply checked, the boiler pressure controls the feed supply in such a manner that the highest water level is maintained as long as the boiler pressure is high, while the water level sinks when the pressure falls. Two pipes 3<a>, 3<b>, arranged at the highest and lowest levels, provided with throttling apertures 4, 4a, are connected to a valve 20, which, in the position shown, allows either steam or water to pass into a cooling coil 6. The steam and/or water passes on to a cylinder 10, and if the pressure is sufficient, lifts the piston 11 so that steam passes through the pipe 13 to a feed pump 14, 15. A throttling aperture 19 is provided in the pipe 18, connected to the suction of the pump. The operation of the device depends on the fact that if water is passing through the throttling aperture 4 or 4<a>, the weight is much greater than if steam is passing. If steam is passing through the pipe 3a, i.e., the water level is falling, the pressure in the cylinder 10 will fall, due to condensation in the pipe 6, and steam will pass through pipe 13 to the pump 14, 15 which supplies feed water to the boiler. Conversely, if water is passing through the pipe 3<a>, the feedwater supply is cut off. The valve 20 is only maintained in the position shown, when the boiler pressure is sufficient to open a valve 30 and lift a piston 26 against a spring 28, i.e., the load on the boiler is normal or low. The feed supply then depends only on the water level. If the boiler pressure falls, due to an increase in load, the valve 30 closes and piston 26 falls, thus rotating the valve 20 so that the pipes 3, 3b are in communication. Water only can then pass into the cooler 6, so that the feed supply is cut off until the level in the boiler falls to the pipe 3b.
Patent GB-811470-A (GB)
Title: Improvements in or relating to pulse radar apparatus
Inventor: MATTHEWS ROBERT
IPC: G01S13/22
Filed: 1956-07-02
Abstract: 811,470. Pulse radar. DECCA RECORD CO. Ltd. June 26, 1957 [July 2, 1956], No. 20496/56. Drawings to Specification. Class 40(7). In a pulsed radar system use is made of multiple returns for detecting targets at long range. In such an apparatus the interval between successive transmitted pulses is systematically altered from one to another of two different values which differ by an amount greater than the duration of the transmitted pulse but small compared with the duration of the intervals. In the general case of n returns the transmitter is arranged to give pulses at n short intervals followed by n long intervals. If the display time bases are triggered to start at the same time as the transmitted pulses the first return echoes will paint as a single response on the display, the second will paint as two responses and the nth will paint as n responses. Second and subsequent returns may be identified by counting the number of responses on the screen for the particular target in question. In such an arrangement the ground, or first, return would tend to obscure the normally less-bright multiple responses on the display. Removal of the first returns can be effected by passing the echoes through a delay line such that the first return from one pulse cancels with the first return from the subsequent pulse. As the interval between pulses is not constant it is necessary to provide two delay lines, one with a delay equal to the shorter interval and the other with a delay equal to the difference of the two intervals, controlled by an electronic switch such that the lines may be used separately or in series to provide the appropriate delay for cancellation of first returns. The delay lines may also be used to determine the timing intervals between the transmitter pulses by passing a trigger pulse from the delay line through a regenerator back to the delay line input so that the pulse is recirculated with the appropriate time intervals and any variation in delay is automatically applied both to the transmitter pulse intervals and to the video intervals. When it is desired to identify one particular return the timebase sequence may be started at a pulse other than the starting pulse of the transmitter sequence. By this means any particular return may be made to paint as one response, other returns painting as multiple responses. First return responses may still be cancelled as explained above. For measuring the range of targets appearing as second and higher returns a conventional type of calibrator or stroke circuit may be used.
Patent GB-516880-A (GB)
Title: Improvements in or relating to the purification of silica sands and the like
IPC: C03C1/02
Filed: 1938-07-11
Abstract: 516,880. Depriving sand, barytes and clay of iron. ROCKWARE GLASS SYNDICATE, Ltd., and ADAMS, F. W. July 11, 1938, No. 20538. [Classes 1 (ii) and 1 (iii)] Sand, barytes; china clays and like materials are purified by removing the iron as volatile ferric chloride, by passing the sand &c. downwardly in counter-current to ammonium chloride vapour and dry air or other inert gas at a temperature above 350 ‹C., preferably above 400‹C. Heated dry sand is fed into a hopper 1 and released by a cone 4 controlled by a screw 5. The released sand falls through plates 6, 7, 8, 9 with apertures of decreasing size but closer proximity, to a collecting place 3c. Ammonium chloride vapour is admitted at 10 and air at 16. The air passes through a coil 15 in the hot purified sand and is so heated before impinging on the baffle plates 17 which distribute it evenly in the column 3. The reaction gases pass off by a pipe 11 and are passed into water to precipitate ferric hydroxide and re-form ammonium chloride which is recovered by crystallization. A box 12 catches sand carried ore. The time of contact of the sand with the ammonium chloride vapour is determined by the position of the cone 4 and the velocity of the upward air current.
Patent GB-777354-A (GB)
Title: Improvements in or relating to the indication and regulation of liquid level
Inventor: MORTON JAMES STORRS
IPC: G01F23/14
Filed: 1954-07-15
Abstract: 777,354. Continuous - casting machines. BRITISH IRON & STEEL RESEARCH ASSOCIATION, and MORTON, J. S. July 1, 1955 [July 15, 1954], No. 20682/54. Class 83 (1). [Also in Group XVIII] The level of metal in an openended water-jacketed continuouscasting mould 12 is indicated by supplying gas under pressure to restricted apertures 16 opening to the interior of the mould at different levels, and measuring the variations in the supply resulting from change in the number of apertures covered by the metal as the level of the latter varies. In the form shown, the apertures 16 incline downwardly from a channel 14, formed by a vertical groove in the wall of the mould and a cover-plate 15, and an inert gas is supplied at constant-pressure to said channel through a regulator 18 and a duct 17 with a restriction 19, the duct 17 at the mouldside of the restriction being connected to a pressure-transducer 20, adapted to convert pressure-variations to variations in an electric voltage, an electric-amplifier 21 and a penrecorder 22. Typical dimensions of the apertures and their spacing are specified. The transducer 20 preferably comprises a bellows operating an electrical potentiometer, and a known automatic-control system may be associated with the amplifier 21 for maintaining a substantially constant level in the mould by regulating either the rate of supply of moltenmetal to, or the rate of removal of the billet from, the mould.
Patent GB-1480853-A (GB)
Title: Propulsion system including a rotary engine and a multi-stage turbine
IPC: F02C5/00
Filed: 1975-05-15
Abstract: 1480853 Power plant; engine turning gear C H WRIGHT 15 May 1975 [16 July 1974] 20712/75 Headings F1K and F1Q A power-plant comprises a rotary engine, a multistage turbine 60, 64, an outlet arranged to pass exhaust gases from the engine to the turbine, a housing 66 containing a chamber 68 which is arranged to receive the exhaust gases after they have passed through the turbine, a number of nozzles 70, 72 74 in the chamber for introducing air into the exhaust gases and a discharge outlet 80 at one end of the chamber. As shown an additional turbine 76 is mounted on the shaft 36 adjacent the discharge outlet. An air compressor 24 is mounted on the shaft and is arranged to supply compressed air to an air duct between the engine housing 32 and an outer housing 12. The air drawn in by the compressor is heated by a heat exchanger 14. The rotary engine comprises rotatable radially extending vanes. A combustible mixture such as a mixture of air and a fuel mix, for example of water and diesel oil is passed through the inlet conduit 20 into a remix chamber 22. In the remix chamber 22 the combustible mixture is warmed by indirect heat exchange with air from the compressor 24. An accessory system 47 is attached to the shaft 36 and includes a starter motor.
Patent GB-1395643-A (GB)
Title: Colour distortion reduction circuit in a colour television  receiver
IPC: H04N11/16
Filed: 1972-05-04
Abstract: 1395643 Colour television NIPPON VICTOR KK 4 May 1972 [6 May 1971 27 Aug 1971 (2)] 20798/72 Heading H4F Phase errors in a PAL colour television signal due to transmission errors are removed in the receiver by the use of notch filters 20, 21, Fig. 4, after the demodulators 16, 17. Filters 20, 21, each of which is formed of two impedance circuits Z1, Z2, Fig. 11, at least one which is a two-terminal reactance circuit, pass signals at frequencies which are integral multiples of the line frequency and remove signals at frequencies which are at odd integral multiples of half the line frequency, and thus the phase error components which have a repetition frequency of half the line-frequency. These frequencies may be removed only below a chosen frequency, all frequencies above this frequency being passed by filters 20, 21. Alternatively if an odd number (N) of vertical colour bars are to be displayed the frequencies removed may be those which are at an odd integral multiple of the number of colour bars times half the line frequency (N#H/2).
Patent GB-774848-A (GB)
Title: Improvements in or relating to chairs
IPC: A47C3/026
Filed: 1955-07-19
Abstract: 774,848. Releasable fastenings. HAMILTON MANUFACTURING CORPORATION. July 19, 1955 [Aug. 12, 1954], No. 20877/55. Class 44. [Also in Group XIV] In a pin-and-hole adjustment device for a member 18 in a fixing lug 20 the pin 32 is of resilient wire with a straight transverse portion 34 at one end for insertion through the holes 24 and a hooked part 38 at the other end which is sprung around the member 18. Specification 726,015, [Group XIV], is referred to.
Patent GB-655394-A (GB)
Title: Improvements relating to machine tools and control apparatus therefor
Inventor: ECCLES GEORGE OSWALD
IPC: B23Q35/12
Filed: 1947-07-31
Abstract: 655,394. Electric control systems. ROLLS-ROYCE, Ltd. July 31, 1947, No. 20885. [Class 40 (i)] [Also in Group XXII] In a milling-machine (Figs. 1, 2) for profiling a work-piece which may be a die for turbine or compressor blades, in conformity with a master profile, the work 10 is carried by a table 13 horizontally traversable in two perpendicular directions in the usual manner. The master profile 14, also supported by the table 13, is contacted by the follower 15, which is of the same diameter and profile as the cutter 11, and mounted on a pivoted arm 16 carrying a movable core 19 varying the airgap of the inductance 20 in accordance with any relative vertical movement between the cutter and the follower due to the traverse of the master profile. The inductance is connected in one arm of an A.C.-fed Owen bridge 21 (Fig. 4), which is normally balanced when the follower and the cutter are in positional correspondence, but which produces an output dependent in magnitude and phase sense on the magnitude and sense of the deviation from correspondence caused by the movement of the master profile under the follower. This signal is amplified at 24 and applied to filter 25 which feeds a further amplifier 27 and a phase discriminator 28 controlling thyratrons V1, V2, variably biassed from a network 50, so that, according to the phase sense of the bridge output, one or other conducts through the secondary of the corresponding transformer 29, or 30. The primaries form alternative paths for energization of the control winding of an induction motor 33 from an A.C. source (which also supplies the running winding direct) through Œ 90 degrees phase shifting circuits so that the motor runs in a direction depending on the deviation of the follower caused by the master profile and drives the table 13 vertically to restore correspondence so that the work is machined by the cutter in accordance with the master profile. Hunting is prevented by a degenerative feed-back signal, derived from a bridge network including the control winding and depending on the motor speed, applied to the amplifier 24 through a phase shift network 39. This voltage may be obtained from a tachometer generator and the motor may be .controlled through variable reactors. The follower may vary a capacity in the bridge, and the reversible induction motor may be replaced by an electric valve-controlled hydraulic motor. In a modification (Fig. 3, not shown), the work is rotated in accordance with the lateral traversal of the follower over the master profile so that the latter is reproduced round the periphery of the work.
Patent GB-876663-A (GB)
Title: Liquid for dyeing and, if desired, simultaneous permanent waving of hair
Filed: 1960-06-14
Abstract: A liquid for dyeing and, if desired, simultaneously waving human hair comprises an aqueous solution of a mercaptan, or an alkali metal or ammonium sulphite, or a sulphite of an organic base, to which has been added a basic dyestuff capable of forming a leuco derivative, or a leuco derivative of a basic dyestuff. The dyestuff, if taken as such, is reduced in the liquid to its leuco derivative and is reformed on the hair by subsequently treating with an oxidizing agent, such as hydrogen peroxide or potassium bromate, as is customary in waving hair with mercaptans or sulphites.  When the liquid contains a sulphite or thioglycollic acid it is rendered alkaline with, for example, ammonia.  When the liquid contains thioglycerol it is rendered acid.  Specified dyes are fuchsine, victoria blue, methyl violet, auramine, crystal violet, malachite green and methylene blue.
Patent GB-921465-A (GB)
Title: Improvements in and relating to the molding of hollow plastic articles
Inventor: SHIELDS RODNEY
IPC: B29C48/13
Filed: 1959-06-19
Abstract: 921,465. Blow-moulding hollow articles. OWENS-ILLNOIS GLASS CO. June 19, 1959, No. 21047/59. Class 87(2). Plasticized material e.g. polythene, is supplied under pressure to an orifice having an injection mould superimposed thereon so that the mould is first filled and then moved away from the orifice at varying speeds causing a tubular extension of non-uniform wall thickness integral with the material filling the mould to be produced. Plasticized polythene is injected by a piston through passages 111, 110, through an orifice and into a neck mould 150 comprising two half-moulds 186 and a neck mould mandrel 178, said mould 150 being superimposed upon the orifice formed by nozzle 103 and mandrel 95. On acillation of timing switches the injection piston is removed from the flow passage, fluid supplied beneath the piston of cylinder 152 to raise mould 150, and material extruded from said orifice. The upward movement of the piston in cylinder 152 is resisted by back pressure above the piston from fluid flowing through a restricted orifice, Fig. 20 (not shown), but when a plate or the mould reaches a switch LS 10, Fig. 11, the back pressure flows through a larger orifice so that the initial slow upward movement causes the extrusion of thicker wall portions of the tubular extension 200 corresponding to the shoulders of the finished container. Blow moulds 210 enclose a suitable extension 200 and air is introduced via the neck mould mandrel in such a manner that it is circulated, vented, and replaced by cooler air without loss of pressure. The moulds are retracted, the neck mould 150 raised further and caused to separate from the neck of the container by pins 190 sliding in inclined recesses 189, and the container engaged and removed by a device comprising inflatable bags, Fig. 17 (not shown), after the base has been severed from the extrusion orifice. Specification 841,550 is referred to.
Patent GB-896766-A (GB)
Title: Improvements in and relating to nitriding aluminum
IPC: C01B21/072
Filed: 1960-06-17
Abstract: Aluminium nitride is made by forming a mixture of finely divided aluminium metal and aluminium nitride and/or aluminium fluoride, nitriding the mixture by passing nitrogen gas thereover at a temperature ranging from 800 DEG -1100 DEG C., raising the temperature of the mixture to 1900 DEG C., while passing a stream of inert gas thereover, cooling the mixture, and recovering aluminium nitride.  Preferably the temperature of the mixture is raised from 800 DEG -1100 DEG C. to 1900 DEG C. at a rate of 450 DEG -550 DEG C. per hour.  The aluminium metal may form 40-60% by weight of the mixture, which may contain 33% of aluminium nitride and 17% of aluminium fluoride or 41,5% of aluminium nitride and 17% of aluminium fluoride.  When aluminium fluoride alone is admixed with aluminium metal the mixture may be heated to 825 DEG -850 DEG C. under nitrogen, the heating may be interrupted and resumed again when the temperature declines to below 825 DEG C. and the mixture may be subsequently heated in an inert atmosphere to 1400 DEG C. to cause sublimation of the aluminium fluoride from the reaction product. An example is given.
Patent GB-495135-A (GB)
Title: Improvements in or relating to films for kinematographic and fixed projection, and to a method of preparing same
IPC: G03B33/00
Filed: 1937-07-31
Abstract: 495,135. Colour-kinematography. GUALTIEROTTI, G. July 31, 1937, No. 21312. Convention date, Aug. 1, 1936. [Classes 97 (i) and 98 (ii)] In a film bearing side-by-side complementary images in a single film-width and used for additive colour kinematography or anaglyphic stereoscopic kinematography, side - by - side colour filters are incorporated iii the celluloid or like film support by colouring treatment. The different colours may be applied side-byside to the support either continuously or at intervals, and may be varied 'in density or shade longitudinally or transversely of the film. The colours may be dissolved in acetone. As shown, the film is wound from spool b to spool b<1> by driving rollers t, t<1>, t<11>, t<111>, and passes over a free roller f to a colouring roller v partly immersed in an acetone solution of the desired colour. The pressing roller p is adjustable by a micrometric screw. The colouring liquid is kept at a constant level. The roller v colours a half width of the film, and after a loop l left for drying a second roller r colours the other half of the film and a second loop l<1> is left for drying before the film is wound on spool b<1>.
Patent GB-614506-A (GB)
Title: Improvements in the manufacture and production of artificial filaments, threads, bands and the like
IPC: D01F1/10
Filed: 1946-07-17
Abstract: A solution of a protein is extruded into a setting medium, and the filaments, threads or bands so formed are subjected to a hardening treatment to render them resistant to cold water and are also subjected to treatment with a solution containing a substance which ionizes and gives cyanate ions, or alternatively, such a substance is incorporated in the spinning solution, to render the filaments resistant to the solvent or degrading action of hot water and hot dilute acids.  Potassium or sodium cyanate or nitro-urea may be used. The protein may be casein from milk or soya bean, peanut, or similar protein.  The preliminary hardening may be effected by formaldehyde, e.g. by using a solution of formaldehyde, and sodium sulphate, magnesium sulphate, sodium chloride, or magnesium chloride, with or without a small proportion of hydrochloric acid or sulphuric acid. After a preliminary hardening, the filaments may be stretched, then subjected to a second hardening, without allowing them to contract, and then treating them with the cyanate solution.  The preliminarily hardened filaments may be immersed in a potassium cyanate-sodium sulphate solution at 50 DEG  C. for a few minutes and then washed, or they may be immersed in the cold solution, dried at 60-70 DEG  C., and then washed.  When the reagent is incorporated in the spinning solution, this should be heated, e.g. at 50-55 DEG  C., for several minutes to effect the required reaction with the protein.  The protein solution may be spun by dry or wet-spinning methods. Specifications 502,710, 549,642 and 567,904 are referred to.