baber/WOPTO huggingface dataset:
Patent GB-1192252-A (GB)
Title: Improvements in or relating to Hydrogen Diffusion Apparatus.
Inventor: RUBIN LEONARD ROY
IPC: F16L41/08
Filed: 1968-01-30
Abstract: 1,192,252. Separating hydrogen by diffusion. ENGELHARD MINERALS & CHEMICALS CORP. 30 Jan., 1968 [1 Feb., 1967]. No. 4837/ 68. Heading B1L. [Also in Division F2] A palladium or palladium alloy tube 7 extending through a header tube sheet wall 4 of hydrogen diffusion apparatus, is sealingly secured to the wall by a body 1 which has a tube-receiving bore 2 and which is welded to the wall at one end and provided with a frusto-conical end face 6 at the other, a first ferrule 9 having frusto-conical end faces 11 and 12, a second ferrule 13 of harder material than that of the first ferrule and having frusto conical and planar end faces 14 and 18 respectively, a tubular bush 8 within the tube and of harder material than that of the first ferrule, and a nut 15 screwed onto the body 1 causing bearing between the cooperating end faces of the ferrules and the body, between the bore of the first ferrule and the tube, and between the bore of the tube and the bush. In the diffusion apparatus of Fig. 3, a plurality of coiled tubes are each connected to end walls in the manner described above, said endwalls defining an inlet chamber 26 for feed gas, a collecting chamber 22 for diffused hydrogen, and an outlet chamber 28 for the throughput gas. In alternative arrangement (not shown, a single end wall supporting one or more diffusion tubes closed at one end inside chamber 22 may be used. The palladium, alloy used for tube 7 may be a palladium-silver, palladium boron, or a palladium-gold alloy. A suitable palladium-silver alloy comprises 75% Palladium: 25% silver by weight. The first ferrule preferably surface-roughened by oxidation, may be of copper, annealed copper-nickel alloy, silver, and aluminium, the second harder ferrule may be made from stainless steel, coldworked copper-nickel alloy, or carbon steel, and the bush may be of stainless or carbon steel.
Patent GB-1236196-A (GB)
Title: Protective spark gap devices
Inventor: BEVAN RAYMOND ALBERT
IPC: H01T4/12
Filed: 1969-01-29
Abstract: 1,236,196. Spark gaps; electrode materials. POWER DEVELOPMENT Ltd. 26 Feb., 1970 [29 Jan., 1969], No. 4870/69. Heading H1D. A protective spark gap device comprises opposed conductive members 1 having smoothly shaped opposing projections 4, 5 thereon and an insulating washer 3 interposed between them, the assembly being enclosed in insulating material 2. Discs 1 of copper, nickel-plated copper, or nickel-plated steel each formed with an annular rib 4 of semicircular cross-section and a central projection 5 of part-spherical crosssection are separated by a washer 3 e.g. of mica. Leads 6 are attached by soldering or spot-welding or the discs may be provided with integral projections for connection purposes. The assembly is coated with resin 2 either by dipping or by an encapsulation process. A number of spark gaps connected in series may be embedded in one encapsulation.
Patent GB-268309-A (GB)
Title: An improvement in, or relating to, the method of discharging ammonium sulphate from saturating tanks
IPC: C01C1/242
Filed: 1927-02-21
Abstract: 268,309. Collin Akt.-Ges. zur Verwertung von Brennstoffen und Metallen, F. J. March 24, 1926, [Convention date]. Ammonium sulphate is discharged from a saturator a, which receives gases containing ammonia from a pipe d together with vapours from a distilling-apparatus c, by means of compressed air admitted by a pipe f. The compressed air is heated by passage through a coiled tube contained in a chamber e through which vapours from the distilling-apparatus are pased. Condensate from the vapour is returned through a vessel g and pipe h to the apparatus c.
Patent GB-1222111-A (GB)
Title: Improvements in or relating to liquid scintillation counting and compositions
Inventor: SENA EDWIN ANDRES
IPC: G01T1/204
Filed: 1968-01-31
Abstract: 1,222,111. Uses of luminescence. E. A. SENA. 31 Jan., 1968 [1 Feb., 1967], No. 4884/68. Heading C4S. A scintillation counting composition comprises a primary scintillator and a surfactant which is thermodynamically stable and exhibits no chemiluminescence or phospherescence when a radio-active sample is added to the composition. The composition may comprise a micellar system including one or more surfactants and co-surfactants, primary and secondary scintillators and polar and non-polar scintillator solvents. Scintillators include PPO, p-terphenyl, diphenylhexatriene, d-NPO, d-NOPON and POPOP. Solvents include water, toluene, xylene, naphthalene, p-cymene and dioxane. Surfactants include fatty acids, fatty acid soaps, e.g. Na linoleate, linolic acid, stearic acid, oleates, stearates, laurates, ethers, esters, sulphonates, petronates, alkyl succinates and ethylene oxide-propylene oxide condensates. Other less useful surfactants include amines, sulphonic acids and ketones. Materials to be counted include CO 2 , hemoglobin treated with NaOH and Na 2 O 2 , aged urine containing precipitated protein, cellulosic materials, synthetic polymers, tissue, uranyl salts, tritium labelled water, toluene ascorbic acid and blood, C 14  labelled toluene, fructose and glycine brine, COCl 2  and n-alkane sulphonate. NaOH may be used to adjust the pH value of the composition.
Patent GB-1499151-A (GB)
Title: Method and apparatus for making a typewriter ribbon
IPC: B26F3/06
Filed: 1975-02-05
Abstract: 1499151 Seaming non-metallic sheet material XEROX CORP 5 Feb 1975 4942/75 Heading B5K [Also in Division B6] A typewriter ink ribbon, formed of a plurality of sections joined end-to-end, the sections consisting of inked portions of different colour separated by barrier portions to prevent migration of ink when the ribbon is wound on a spool, is produced by superimposing a first ribbon group consisting of a supply of ribbon of a first colour joined to a barrier portion and a second ribbon group consisting of a supply of ribbon of a second colour joined to a barrier portion and applying heat and pressure to the superposed ribbons to sever the ribbons and join the ribbons to each side of the heat and pressure applying station to form at one side a third ribbon group consisting of a portion of ribbon of the first colour and a portion of ribbon of the second colour interconnected by a barrier portion. The process is repeated to produce a ribbon consisting of a multiplicity of colour portions.  Apparatus for producing a ribbon by such a method comprises a heating wire 310 having a severing and joining portion 312 of circular section and a joint-smoothing section 314 of strip-like section. A pressure pad 340, covered with silicone rubber to dissipate heat, urges the ribbon into contact with the wire 310 under suitable drive means, e.g. from a foot pedal. Tension in the wire is maintained regardless of its temperature by a spring 322. The wire 310 contacts a member 326 which includes an electrical contact and a thermocouple. Indicia lines 400, 401 are provided to ensure that the correct lengths of ribbon are joined.
Patent GB-547397-A (GB)
Title: Method of controlling an aircraft by variable incidence
IPC: B64C3/38
Filed: 1940-03-18
Abstract: 547,397. Controlling aeroplanes. MILLICHAMP, B. W. March 18, 1940, No. 4978. [Class 4] An aeroplane is supported by two planes A, B pivoted about transverse axes A' and adjustable simultaneously by the linkage F, K, G, H shown and forming a variable slot between the wings. There are three spaced hinges on each axis A<SP>1</SP>, a central one on a vertical pillar D or E and laterally spaced ones braced to the main structure by wires A<SP>2</SP> or struts. The planes are given a dihedral angle beyond the lateral supports A<SP>2</SP>. A trimming plane M is provided at the rear of a tail plane N. The rear pillar E may be telescopic and the wires or struts A<SP>2</SP> adjustable to enable the height of the rear plane to be adjusted while on the ground.
Patent GB-652645-A (GB)
Title: Improved process and apparatus for the manufacture of viscose rayon
IPC: D01F2/06
Filed: 1948-02-20
Abstract: <PICT:0652645/IV (a)/1> <PICT:0652645/IV (a)/2> Viscose is extruded into a coagulating bath and the thread obtained is subjected to a stretching of at least 150 per cent, led over at least one feed roller, and caused to travel in the wet state for 3 or more metres in air in a straight or sinous path between the last feed roller, or between the point where the thread reaches the last feed roller, and the winding device at a rate such that the travel lasts for a period of at least 3 seconds, and under tension such that the length of the thread is maintained substantially constant.  The long air path allows internal tensions set up by the stretching operation to be relieved before the thread reaches the winding device.  This may be a centrifugal pot or a bobbin or reel.  The thread may pass directly to the winding device or may first pass through a washing bath.  The thread may travel at 75-100 metres per minute and the air path may be 3-10 or more metres in length.  A solution of 55 or more per cent of sulphuric acid may be used for the coagulating bath, and the thread may be stretched in presence of this acid or in a following bath of hot water.  The threads obtained may have a tenacity of 4, 5, or more grams per denier and an extensibility of 9-10 per cent.  As shown in Fig. 1, a thread 3 after leaving feed rolls 1, 2, describes a sinuous path by passing round deviating rods, rollers, wheels, or similar devices 4-8 before entering the funnel 9 of the spinning pot 10.  The path of the thread may be increased by causing it to travel in loops round roller 2.  As shown in Fig. 2, viscose is extruded from nozzle 23 and the thread 3 is formed in bath 22 which contains sulphuric acid of 55 per cent strength.  The thread is stretched between feed rollers 25 and 2 by 200 per cent.  It then traverses roller 2 in an axial direction in a number of loops, the spacing being maintained by the inclined rod 26.  The thread may pass round roller 25 one or more times.  It passes from roller 2 to a washing bath 27, and then to a centrifugal spinning pot 10.
Patent GB-189082-A (GB)
Title: Improvements in air-cooled condensers
IPC: F28B1/06
Filed: 1922-02-21
Abstract: 189,082. Aktiebolaget Ljungstr÷ms. Angturbin. Nov. 8, 1921, [Convention date]. Surface condensers.-In an air-cooled condenser comprising a number of elements in parallel, the outlet of each element or of the header into which a set of elements, which is itself in parallel with another set of elements. opens, is constructed to maintain the pressure in the elements, thus increasing the flow into any element in which a disproportionate amount of condensation is taking place, and diminishing the risk of freezing. The invention is particularly applicable to apparatus with several sets of elements in series, as described in Specification 125,968, but may also be applied to apparatus with a single set of elements. When the elements consist of flattened pipes, as described in Specication 138,080, [Class 64 (iii), Surface apparatus &c.], they may be tapered horizontally or vertically. A collector 32, into which a number of such pipes open, as described in the same Specification, may be provided with a throttling disc 36 or a tapered outlet 37. Individual elements may be flattened at the ends, as shown at 33, Fig. VI., or may be provided with slotted or perforated closure plates, as shown at 34.
Patent GB-179494-A (GB)
Title: Improved filtering apparatus
IPC: B01D33/09
Filed: 1921-03-11
Abstract: 179,494. Keene, E. W. W. March 11, 1921. Closure members, rotary cylindrical.-A rotary suction filter, from which the collected solid matter is removed by fluid under pressure admitted to the interior of the filtering element or elements, is provided for this purpose with a valve comprising a rotary ported member a cooperating with a fixed housing h which has one or more outlets o, p and one or more sliding members r, s, whereby the functions of the ports may be controlled. A rotating shaft b, which supports the filtering elements, also supports the member a and tubes e, which communicate with separate sectors of the filtering elements. The tubes e engage with axial passages c, having radial ports d, in the member a. With this arrangement, the tube leading to each separate filter sector is, by the rotation, placed successively in communication with a filtrate outlet p, a washwater outlet o, an inlet q for fluid under pressure and an outlet q<1> for the fluid under pressure. The period of communication with each can be regulated by adjusting the slides r, s by means of links t. Packing in an annular space l between the member a and the housing h can be tightened or adjusted by means of studs k which fix the housing to the plummer block i.
Patent GB-1013183-A (GB)
Title: Toy apparatus for moulding articles from thermoplastic sheet material
IPC: A63H17/00
Filed: 1964-02-07
Abstract: 1,013,183. Forming thermoplastic sheet material. MATTEL Inc. Feb. 7, 1964 [Feb. 8, 1963], No. 5211/64. Heading B5A. In a toy apparatus for vacuum forming thermoplastic sheet material, a sheet 34 is clamped between frame members 46, 48, pivoted relative to each other about pins 126, and heat softened over an electric heater 62, disposed within a box-like frame 36. Both members 46, 48 are then pivoted, by means of handle 44, to the position shown in Figs. 3 and 11, in which the sheet is positioned over a mould 45 supported on an apertured plate 70. Plate 70 is supported, by means of pins 150, upon the upper wall 100 of a turret 97 mounted on frame 36, and is enclosed by upstanding walls 104 formed integral with wall 100, a slight space being provided between wall 104 and the plate to allow the passage of air therebetween. In the moulding position walls 132, 130 of frame member 48 co-operate with wall 104 to provide an airtight seal. The pressure within the chamber 47 formed by walls 104 and 100 and sheet 34 is then reduced through valve 192, 194 in wall 100 by means of piston and cylinder pump 156, 158 operated through linkage 170. The sheet is then sucked on to and formed over the mould, the frame members being subsequently raised, opened, and the formed sheet removed. The sheet, which has perforation around its edge is held securely by means of cooperating pins 50 and recesses 139 arranged on the frames, the frame being retained in the clamping position by resilient members 54 and corresponding recesses 56. The sheet may comprise a thermoplastic layer, a metallic layer and a surface layer of a black heat absorbent material (see Fig. 14, not shown).
Patent GB-1195011-A (GB)
Title: Improvements relating to a Method Of and Apparatus For Machining a Surface of a Moving Workpiece
Inventor: BRADLEY CYRIL IVAN RICHMOND
IPC: B23C1/18
Filed: 1966-02-07
Abstract: 1,195,011. Finishing cylindrical surfaces. C. I. R. BRADLEY. 8 May, 1967 [7 Feb., 1966], No. 5264/66. Headings B3K and B3T. A method of machining a surface of a rotating workpiece 2 comprises bringing into contact therewith the periphery of a freely rotatable hyperboloidal cutter 3 having substantially line contact therewith. The cutter 3 is used to finish an end 2 of a bar in a lathe. The cutting teeth 7 are formed by cutting variably-spaced slots 6 in the hyperboloidal surface 5 and grinding the cutter by a tool formed and positioned in a similar manner to the workpiece 2 to be finished. The cutter is urged resiliently against the work with positive limit stops to determine the finished size. Gauging means continuously monitor the position of the cutter. Two opposed cutters may be used on pivoted arms urged together by spring or power means. In a modification, the cutter is moved tangentially to the work and the teeth have the hyperboloidal curvature offset from the cutter centre.
Patent GB-1476053-A (GB)
Title: Glycyrrhetinic acid derivatives
IPC: C07C62/38
Filed: 1975-02-07
Abstract: 1476053 Glycyrrhetinic derivatives BIOREX LABORATORIES Ltd 27 Jan 1976 [7 Feb 1975] 5296/75 Heading C2U The invention comprises compounds of formula (wherein R is alkylene or cycloalkylene and X is O or H 2 ) and non-toxic salts and esters thereof; and their preparation from the corresponding 2-(hydroxymethyl)oleanenes by reaction with a reactive derivative of R(CO 2 H) 2 , optionally followed by salification or esterification. The 2-(hydroxymethyl) starting materials are obtained by reducing the corresponding 2- (hydroxymethylene) - 3 - oxo compounds (cf. Specification 1,227,547) optionally followed by saponification of a 30-ester group. Alternatively 2(hydroxymethyl) -3#-hydroxy-18α-olean- 12-en-30-oic acid is obtained by catalytic hydrogenation of ethyl 2-(hydroxymethyl)-18α- glycyrrhetinate. Anti - inflammatory compositions for oral, parenteral and topical administration comprise a compound of the invention and a carrier.
Patent GB-1038585-A (GB)
Title: Improvements in or relating to apparatus for producing cold at low temperatures
IPC: F25B9/14
Filed: 1965-02-08
Abstract: 1,038,585. Refrigerating. N. V. PHILIPS CLOEILAMPENFABRIEKEN. Feb. 8, 1965 [Feb. 11, 1964], No. 5340/65. Heading F4H. The working medium of a cold-gas refrigerator 11 is discharged from the cold space 7 through valve 14 when the pressure in said space reaches a predetermined value, forwarded through a heat exchanger 16 to an expansion device 17 and returned to the refrigerator via exchanger 16. As shown the compressor piston 2 of the refrigerator is double acting and serves to compress the returning refrigerant in a space 40, the refrigerant from heat exchanger 16 being admitted to space 40 via an inlet valve 43, a regenerator 42, and a cooler 41 and discharged therefrom via the cooler and regenerator and an outlet valve 44. The refrigerant then returns to space 7 via an accumulator 46 and an inlet valve 15 which opens at a pressure less than said predetermined value. The refrigerant liquefies at the expansion device 17, which may be a valve or an expansion engine, and some liquid may be withdrawn from the system, a make-up supply being then provided. Compression stage 40 may be omitted (Figs. 1 and 2, not shown) or replaced by an independent compressor which may have an associated regenerator (Figs. 3, 4 and 5, not shown). In the embodiments of Figs. 7 and 8 (not shown) the returning refrigerant is cooled by indirect heat exchange with the regenerator(s) of the refrigerator before being admitted to the compression space 40 and is returned from the latter to the compression space 6 of the refrigerator. The refrigerator of Fig. 8 has a stepped displacer. In further embodiments (Figs. 2, 4 and 5, not shown) a regenerator 20 is interposed between space 7 and valves 14, 15 while in Fig. 9 (not shown) two refrigerators are connected in series; they may also be connected in parallel.
Patent GB-1383740-A (GB)
Title: Detection devices for image analysis systems
IPC: H04N1/403
Filed: 1971-02-25
Abstract: 1383740 Television; pulse thresholders IMAGE ANALYSING COMPUTERS Ltd 8 Feb 1972 [25 Feb 1971 16 Dec 1971] 5390/71 and 58584/71 Headings H4F and H3T A detector circuit for obtaining a binary signal from a line scanned video signal in which the voltage on a capacitor in a peak level detector is used to provide a reference voltage for, or to vary the amplitude of the video signal applied to a comparator, the capacitor is provided with a discharge circuit which is enabled in response to a switching pulse generated by a circuit comprising a second peak level detector and a comparator whenever the second detector voltage decays below the video voltage. The circuit reduces the effects of background shading across the scanned image.  As shown. Fig. 8, the video signal at input 110 is applied to a first peak detector comprising diode 124 and cpacitor 120. The voltage across capacitor 120 is applied via amplifier 118 to potentiometer 116 the tapping point of which is connected to one input of comparator 114 the other input of which is supplied with the video signal delayed by a time equal to the charging time constant of the first peak detector. The delayed video signal is also applied to a second peak detector comprising diode 136 and capacitor 138 which is provided with an adjustable discharge path 140. The voltage across capacitor 138 and the video signal are applied to the inputs of a comparitor 142 which generates an output pulse to control a gate 128 in a discharge circuit for the peak detector capacitor 120. The circuit is also provided with two additional charging paths for the first peak level detector, one comprising diode 130 so that capacitor 120 is charged from the delayed video signal as well as from the undelayed signal, and the other comprises diode 132 and potentiometer 134 which clamps the voltage on the capacitor 120 so that it can not fall below a certain value which is selected to be the maximum shading level. 'In a the tapping point of potentiometer 116 is amplified and used as a control voltage to vary the gain of an amplifier (148) which feeds the delayed video signal to a comparator where it is compared with a fixed reference voltage. The clamping circuit 132, 134 may be connected to the top of the potentiometer 116 instead of directly to the peak level detector capacitor 120 to achieve the same effect on the output signal.
Patent GB-804102-A (GB)
Title: Improvements in or relating to circuit arrangements for controlling a plurality of electron beams
Inventor: JAQUES ANTHONY FRANCIS
IPC: H04N3/20
Filed: 1956-02-22
Abstract: 804,102. Cathode-ray tube operating circuits. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Feb. 22, 1957 [Feb. 22, 1956], No. 5443/56. Class 40 (7). The beam currents of projection-type colour television receiver cathode-ray tube (C.R.T's) 1, 2, 3 are all limited to a value below that at which " screen burn " can arise by causing resistor 16 to develop a voltage sufficient to produce conduction in high-impedance valve 8 resulting in a voltage drop across resistor 12 applied via brightness control potentiometers 20, 21, 22 to the control grids of the C.R.T.'s; resistor 9 is so adjusted that valve 8 conducts only when the highest mean beam current is just below that causing " screen burn." Valve 7 is the luminance signal amplifier, the colour difference signals are applied to capacitors 4, 5, and 6, and diodes 27 and resistors 26 are D.C. restorers for the individual colour signals. The invention can be applied to any circuit arrangement of several electron guns where the beam currents are to be controlled.
Patent GB-1080082-A (GB)
Title: Apparatus for the recording or playback of sound on and/or from a tape stored in a catte
IPC: G11B15/18
Filed: 1966-02-08
Abstract: 1,080,082. Tape recorders. STAAR SOC. ANON. Feb. 8, 1966 [Nov. 3, 1965], No. 5460/66. Heading G5R. Movement of a cassette in one direction in its main plane causes elements of the drive mechanism to enter the cassette in a direction perpendicular to its main plane. As shown, the drive mechanism is carried on a movable plate 2, which is linked to the main frame 1 either by linkages 27, (28), 29 or by rollers (111, Fig. 14) moving in arcuate slots (113) so that movement of the plate 2 to the left in Fig. 5, caused by the engagement of tubular members 78 with the leading edge of a cassette 71 as it is slid into position, is accompanied by an upward movement of the plate 2 towards the cassette 71 which is thus penetrated by the capstan (12<SP>1</SP>) and the drive spindles (23, 94). A switch 114 is closed by the plate 2 in its operative position, in which it is locked by one of two quadrantshaped releasable latches (31, 32, Figs. 1, 6, 8). The other of the two latches may hold the plate 2 in an intermediate position (Figs. 11, 12) in which the tape is no longer in contact with the head (88) or the pinch roller (83) but the drive spindles remain in operative position for fast forward wind or rewind of the tape.