baber/WOPTO huggingface dataset:
Patent GB-1375052-A (GB)
IPC: C01F17/00
Filed: 1972-01-12
Abstract: 1375052 Luminescent materials and uses thereof EASTMAN KODAK CO 12 Jan 1972 [12 Jan 1971] 1461/72 Heading C4S [Also in Division H5] The method of making an oxychalcogenide of formula (L 1-x A x ) 2 O 2 Ch where L is one or more rare earth, A is a different rare earth of Atomic No. 59 to 71, Ch is S, Se or Te, and x is 0À0001 to 0À20, comprises first forming by precipitation with chalcogenite anions from a solution containing the L and A cations, crystals of a size of at least 0À5Ál of a chalcogenite of formula (L 1-x Ax) 2 (ChO 3 ) 3 .Y where Y represents water of crystallization and subjecting to a reducing, non-halide, non-chalogenating gas at a temperature and for a time to reduce to the chalcogenide. The gas may be hydrogen, an atmosphere of hydrogen, argon, carbon monoxide, and water vapour. L may be La, Gd, Y or Lu, A may be Pr, Eu, Dy, Yb, Tm, Tb or Sm in amount 0À01 to 20% for example. Annealing steps are detailed. The crystals may be made by adding a solution (A) of cations, a solution (B) of chalcogenite anions and one of (C), containing sufficient anions or cations to maintain an excess. After reduction, heating may be in an inert or mildly reducing atmosphere. Reaction solutions are preferably aqueous but may be organic solvents. Subdued, yellow or red light avoids photochemical deterioration during precipitation. Antioxidants inhibit oxidation of anions in air. Precursors may also be produced by dissolving lanthamide oxide, hydroxide in sulphorous acid followed by crystal growth by heating. Light absorbent material (e.g. dyes) may be in the emulsion or a separate layer in a radiographic screen which may include an Ag halide emulsion on a support with phosphor on the same or a different support. The halide may be on both sides and halides and grain sizes are exemplified. Stripping, support (e.g. flexible) protective, layer materials and binders are exemplified also phosphor densities and coverage. Transmittance in double coated systems may be controlled by optically separating barriers, dye inclusion, halide balancing adjustments, emulsion grain size, shape and distribution. Emulsions may be chemically sensitized (materials given), and emulsions and hardeners are exemplified. Emulsion binders are given and many other details including sensitizers, stabilizers, coating aids, surfactants,  developing agents, spectral sensitizers, inert particles for matting purposes, and antihalation layers. Conversion to micro film images may be during or after processing and colour couplers may be included as in Specification 799,588. Shadow mask tubes with 3 to 8 mole per cent Eu activated phosphors is disclosed; also fluorescent and high p Hg lamps. Up to 10% of La in lanthanum oxysulphide may be replaced by Y and/or Gd. Examples disclose detailed processes. Ammonium, sodium or potassium univalent cations may be present in the reaction mix. Phosphors include Eu or Tb : yttrium oxysulphide; Eu or Tb : lanthanum oxyselenide; Eu or Tb : gadolinium oxysulphide; Eu or Tb : lanthanum oxytelluride;
Patent GB-328010-A (GB)
Title: Improvements in apparatus for graphically illustrating the variation in the product of two sinusoidal alternating magnitudes of equal frequency, in accordance with variation of phase relationship between the said magnitudes
IPC: G09B23/18
Filed: 1929-01-16
Abstract: 328,010. Dance, H. E. Jan. 16, 1929. Calculating-apparatus.-Two variables and their resultant are represented by sinusoidal curves, and by mechanical means these may be shifted relatively so as to show graphically the relation between the quantities under given conditions. As described applied to the vector quantities volts, currents and watts, in an AC system, the curves v<1>, c', w<1 >denoting these values are plotted on superposed rectangular preferably transparent sheets V, C, W, mounted on a frame G provided with a cover having a window g<2>. The sheets V. C are slidable in the direction of the time axis OX by connection respectively with screw-and-nut gearing, the screws V<2>, C<2> of which are of opposite hand and are carried by a shaft S rotatable by a handle H or H'. The third sheet W is slidable at right angles to OX by means of a lever w<3> engaging a cam w<2> rotated from the shaft s by gearing s<2>. By rotation of the shaft until a given phase angle is shown by the pointer P, the graphs v', c<1> are correspondingly displaced and the resultant curve w' is raised or lowered to represent with respect to the time axis the power factor and the energy in the system. One of the sheets v<1>, c<1> may be coloured below the axis OX, and the sheet W<1> below the graph may be complementarily coloured so as to show more readily the positive and negative energy areas. The graphs may be projected by a lantern. In a modification the sheets are moved by pin and slot connection with a. disc rotatable by a handle according to the phase angle.
Patent GB-641197-A (GB)
Title: Improvements in or relating to apparatus for dispensing liquids by weight
IPC: A01G25/14
Filed: 1948-01-19
Abstract: 641,197. Weighing-apparatus. ZWICKY, J. F., and SIMPSON, A. J. Jan. 19, 1948, No. 1599. [Class 143] [Also in Group I] In an apparatus for dispensing measured quantities of liquid for sub-irrigation of plants, a filled liquid container 1 is supported near the top of a column 5 by a counterbalanced lever 17 which, after the container has dispensed a predetermined weight of liquid, releases said container and allows it to slide down the column so terminating the dispensing of liquid. The lever 17 comprises a pair of side members pivoted to a sleeve 16 and carrying at one end an adjustable counterweight 20 and at the other a roller 18 which engages under an L-shaped member 19 secured to the container. When liquid is being discharged through the pipe 12 the container is gradually lifted by the arms which are so arranged that the liquid level remains constant throughout the discharge period. When the lever 17 has been pivoted to a position wherein the roller 18 can no longer engage the member 19 the container slides down the column 5 onto a buffer spring 7, and in so doing passes beneath the discharge' point 13 so cutting off the supply of liquid thereto and allowing the surplus liquid remaining in the pipe to turn back into the container. The container is now refilled and catches 24 are engaged with a bolt 25 which then holds the lever in a position ready for engaging under the member 19 when the container has been re-lifted. After re-engagement of the roller 18 and member 19 the catches 24 are automatically disengaged from the bolt 25 by springs 26 and the apparatus repeats the cycle of operation. The sleeve 16, which is adjustable on the column 5 to give any desired head of liquid, carries abutment members 21 which limit rotation of the lever 17 when it is released from the member 19. A counterweight 11 assists the raising of the container 1. In a modification (not shewn) the counterweight 20 may be replaced either by a spring device or by a hydraulic piston and cylinder fitted with a bleeder valve, and the single column 5 may be replaced by a plurality of columns. In a further modification the retaining mechanism may be located on a separate support.
Patent GB-509826-A (GB)
Title: Improvements in volume measuring apparatus for liquids
IPC: G06M1/38
Filed: 1938-01-18
Abstract: 509,826. Liquid volume-measuring apparatus. SOC. D'ETUDE DE DISTRIBUTEURS AUTOMATIQUES S.E.D.A. Jan. 18, 1938, No. 1607. Addition to 506,382. [Class 106 (i)] The construction of the parent Specification is modified in that the means for locking the housing of the differential mechanism, forming the transmission between the meter and the trip totaliser, except when the trip totaliser is being reset to zero, comprises a wedging device. In the construction shown in Fig. 1 the differential housing 5 is contained in a ring 35 having recesses 36, 36<1> containing spring-pressed balls 38, 38<1>. The ring 35 is held stationary by a recess 42 in which engages a projection 41 rigidly secured to a collar 43 held fast on a shaft 44 by a set screw 45. Normally the housing 5 is prevented from rotating by the wedging action of the spring-pressed balls 38, 38<1> in the recesses 36, 36<1> but is allowed to rotate when the ball 38 is moved against the action of its spring by a rod 46 when moved by the lever 25 having a roller 29 engaging the notch 34 in a cam 30 rotated by the handle resetting the trip totaliser to zero. The differential may comprise bevel pinions' or spur pinions. In the construction shown in Fig. 3 the differential housing 5 is locked by the eccentric cams 49, 49' and spring connected levers 50 and 50<1> under the control of the lever 25 and cam 30 as in the construction shown in Fig. 1. The cams 49, 49<1> are rotatable on shafts 48, 48<1> connecting two plates 47, each having a central hole for the housing 5 and each having a notch 53, engaging a locking pin 44.
Patent GB-1131361-A (GB)
Title: Method for the manufacture of shaped hollow articles from thermoplastic sheet material
Inventor: GRAY THOMAS EDWARD HORACE
IPC: B29C51/10
Filed: 1964-10-14
Abstract: 1,131,361. Sheet forming. DUNLOP CO. Ltd. 6 Oct., 1965 [14 Oct., 1964], No. 1607/65. Heading B5A. Hollow peripheries are formed by vacuum drawing a heat-softened clamped thermoplastic sheet on to a heated first forming surface to form domes therein, said domes having a height substantially equal to half the height of the required hemisphere, and then transferring the domed sheet to a second forming member on which the hemispheres are finally formed. The first surface is a vertically reciprocable male die (19) having projections (20) and the second surface is a vertically reciprocable female die (29) having corresponding recesses, to which the domed sheet is transferred by a combination of vacuum and blowing. In an alternative embodiment the first surface may be a female die and the second a male die. Two such hemispheres are superimposed and butt-welded around their circumference to form a ball.
Patent GB-632712-A (GB)
Title: Improvements relating to heat-resisting alloys and to articles made from them
IPC: C22C19/05
Filed: 1947-01-17
Abstract: Alloys which are particularly suitable for the manufacture of articles which are to be subjected to prolonged stress at high temperatures have the following composition: Cr 12.0-35.0 per cent, Al 0.5-5.0 per cent, Ti 1.0-5.0 per cent, Zr 0.002-0.2 per cent, Ni the balance.  The sum of the Al and Ti contents is between 2.5 and 6.0 per cent.  The Ni may be partly replaced, up to 45.0 per cent of the alloy, by Co.  The alloy may contain one or more of the following elements Fe up to 15.0 per cent, Si up to 2.0 per cent, W up to 5.0 per cent, Mo up to 5.0 per cent, C up to 0.5 per cent, Nb 0.002 to 5.0 per cent and also one or more of Mg up to 0.15 per cent, Ca up to 0.15 per cent, Mn up to 2.5 per cent, Cu up to 2.0 per cent, N, O, P, S, As, Sb, Pb, Bi Se, Te, V, B, alkali metals, and alkaline earth metals up to 3.0 per cent in total.  The alloys may be given a heat treatment consisting of a solution treatment e.g. at 1060 DEG -1200 DEG C. for at least 1 hour followed by rapid cooling and ageing e.g. at 700 DEG -850 DEG C. for at least 4 hours.  An additional heating between the solution and ageing treatments may be given at an intermediate temperature. According to the Provisional Specification the alloys may contain Cr as low as 10 per cent, Al 0.1-8.0 per cent, Ti 0.1-8.0 per cent, the Ti and Al contents being 2-10 per cent in total, Fe 0.1-25 per cent, Si 0.05-8.0 per cent.  The Provisional Specification also refers to a heat treatment in which the solution treatment is omitted, the above mentioned intermediate and ageing treatments only being given.  Specification 612,181 is referred to.
Patent GB-783753-A (GB)
Title: Monoazo dyestuffs of the benzene-azo-quinoline series and metal complexes thereof
Filed: 1956-01-18
Abstract: The invention comprises dyestuffs of formula <FORM:0783753/IV (b)/1> where R is a benzene residue containing a metallizable group o to the azo group, and heavy metal complexes thereof.  They are made by coupling appropriate diazo benzenes and 2,6-dihydroxy-4-methylquinoline and optionally metallizing the product.  The diazo compounds may contain substituents such as -SO3H, -SCOOH, -SO2 (or -CO-)-NH2, -SO2 (or -CO-)-NH-alkyl, -SO2 (or -CO-)-N(alkyl)2, -SO2-alkyl, -SO2-aralkyl, -SO2-aryl, -alkyl, -NO2, -halogen, O-alkyl, and -SO2-CH2-O, in the 3 and 4 positions relative to the metallizable group.  Metallization may be effected in known fashion in substance or on the fibre.  The dyestuffs dye wool and polyamide fibres in blue, brown or olive shades by a single bath or after-chroming process.  In examples which illustrate the preparation of the dyestuffs and their use in dyeing the following diazo components are used 1-amino-2-hydroxy-5-nitrobenzene and its 3-sulphuric acid, 1-amino-2-hydroxy-4-nitro- and -3,5 - dinitro - benzenes, 1 - amino - 2 - phenol - 5-ethylsulphon and sulphonamide which may be alkylated on the amide nitrogen and 4-sulphodimethylamide and 1 - amino - 2 - carboxybenzene-4- and -5-sulphonic acids. Specification 758,016 is referred to.
Patent GB-477192-A (GB)
Title: Improvements in and relating to fluorescent screens
IPC: C09K11/02
Filed: 1937-01-21
Abstract: 477,192. Lamps with fluorescent screens. BRITISH THOMSON-HOUSTON CO., Ltd. Jan. 21, 1937, No. 1828. Convention date, Jan. 22, 1936. [Class 75 (ii)] [Also in Group XX] A screen used to compensate for spectral deficiency of a light source comprises a support coated with a fluorescent layer of a thickness greater than that which would be required to effect compensation if the support were coated all over, the layer being applied at spaced intervals in order to offset the over-compensation. Such a screen layer has a longer life than thinner layers. The layer may comprise Rhodamine B or a derivative thereof in a cellulose acetate binder, applied in solution in acetone or polymerized vinyl acetate either as a single coating, or in several coatings with interposed coatings of plain cellulose acetate. Zinc sulphide also is referred to. Fig. 3 shows a mercury-vapour lamp 1 in a quartz container suspended from a porcelain or like base carrying a reflector 5 supporting a transparent or translucent bowl 6, the inner surface of which is coated with Rhodamine B solution of specified strength to produce stripes 7 of a thickness determined as described above (and lying preferably between 2 and 14 mils), separated by uncoated stripes. The screen may be shielded from ultra-violet rays from the lamp by interposing a glass cylinder, or by applying the screen to the outside of the bowl 6. A cylindrical metal reflector of arcuate crosssection for a positive column mercury lamp is also described on which a plaid pattern of fluorescent stripes is coated, the metal surface being roughened to prevent " light trapping." Fig. 6 shows a stand lamp in which a source 17 of the kind shown in Fig. 3 is enclosed in a glass bulb 18 surrounded by an open-topped bowl 19 from the lip of which a parchment or like shade 24 may be hung. The bowl 19 is coated with fluorescent stripes 20. It is s ated that the screen may take the form of a renewable insert of coated paper or parchment. Reference has been directed by the Comptroller to Specification 431,408.
Patent GB-326922-A (GB)
Title: Improvements in or relating to thermionic valve amplifiers
IPC: H03F3/44
Filed: 1929-01-18
Abstract: 326,922. Turner, P. K. Jan. 18. 1929. Thermionic amplifiers.-Relates to an amplifying system of the kind in which two valves v1, v2 are connected plate to filament in series across a common high-tension supply. The input voltage is applied in phase opposition and is preferably divided in inverse ratio to the respective amplification factors of the valves. The output will then be in straight-line relation to the input. irrespective of the form of the valve characteristics, whilst the current taken from the hightension source is maintained constant so that it is unnecessary to use either smoothing or decoupling devices even in the case of a high-' impedance source common to several valves. As: shown in Fig. 1. the output is fed from' reversely-wound coils p1, p2 in series with condensers c1, c2 to a secondary winding s. In the modified arrangement shown in Fig. 2 the load circuit L is connected between two series condensers c3, c4 and the filament of the valve v1. In Fig. 3 the input is fed to the valve v2 only, the grid of the valve v1 being retroactively coupled to the output transformer t3. Grid bias for both valves may be taken from resistances such as RA, Fig. 4, in the filament circuit, or it may be derived from a resistance RB in the direct-current high-tension path.
Patent GB-544729-A (GB)
Title: Method for making a fuel consisting predominantly of normally fluid hydrocarbons in solidified form
IPC: C10L7/02
Filed: 1941-02-11
Abstract: 544,729. Solidifying liquid hydrocarbons. CLARK, D. M. (Stirlen, E. D.). Feb. 11, 1941, No. 1871. [Class 91] In the preparation of a gelatinized fuel from hydrocarbons which are normally fluid and readily inflammable by addition of sufficient of a sodium soap to effect congelation thereof, the mixture of hydrocarbons and soap is dissolved in an organic solvent of boiling point below the major part of the hydrocarbons and the gelatinized fuel recovered as such therefrom by distilling off the solvent. Previously prepared soap may be used or it may be formed by saponification of the saponifiable material dissolved in the solvent, the hydrocarbons being mixed with the latter or added thereafter. The alkali may be added in the dry form or in aqueous solution, water resulting from the additives, in excess of the amount which is soluble in the ternary system, separating into a heavier liquid phase which is withdrawn prior to the distillation. Hydrocarbons specified comprise a petroleum distillate, such as a gasoline fraction, or a mixture of benzene hydrocarbons, such as a light coal tar distillate; a single hydrocarbon may be used, such as benzol. A gasoline fraction of boiling range 160‹-280‹F. is preferred, a gasoline fraction of which 90 per cent. has a boiling range 130‹-350‹F. is also suitable. The soaps specified comprise sodium resinate or sodium stearate; suitable solvents comprise 95 per cent. ethyl alcohol, 95 per cent. methanol, or 98 per cent isopropanol. The soap content of the solidified fuel is preferably 5 to 7.5 per cent. A detailed example is given.
Patent GB-659774-A (GB)
Title: Improvements in or relating to tents
IPC: E04H15/40
Filed: 1949-01-24
Abstract: 659,774. Tents. FARRER, J. O. (Frieder, L. P.). Jan. 24, 1949, No. 1942. [Classes 20(i) and 20(ii)] A ridge tent for housing an aircraft has a main ridge member, one end of which is supported on a flexible member slung between two poles. As shown the arcuate ridge member 45 is supported at one end on a pole 38 and at the other in a cable 28 which is slung between poles 2 and 4. Further arched members 58 and 60 are joined from an intermediate point on the central ridge to poles 2 and 4. The fabric of the tent is supported on the central ridge, the two auxiliary arched members 58 and 60 and an additional pair of poles 74 and 80 and its edges may have wires sewn into them. The ends of the main ridge are joined by a cable 66 which may be tensioned by means of turnbuckles. Further cables 70, 72, also from poles 6 and 8 are joined to cable 66 and lie vertically below members 58 and 60. These latter may be compound members similar to the main ridge. Their construction is described below. The main ridge may be supported on a flexible member at each end. Construction of main ridge member (Figs. 7 and 15).-The arch is composed of a number of separate sections joined by members 53, 54, 56, the construction of which is shown in Fig. 15. The end of two sections 112, 114 are joined by a tapered member 188 on one section and a socket 186 on the other. A split tube 134 clamps the ends by means of bolted flanges 152 and the three main tubes forming the ridge are spaced by tubes such as 160. Construction of the auxiliary arches (Figs. 8 and 9).-The members composing the arch are each made in two parts 105, 107, the ends of these two parts being held in a clamping member such as is described in connection with the main ridge member. Through the middle of each tube passes a cable 125 tensioned by a screw device at one end of the member. This device is described in detail with reference to Fig. 12 (not shown) and comprises a screw-adjusted piston holding the end of the through cable.
Patent GB-113001-A (GB)
Title: Improvements in and relating to Electromagnetic Switches.
IPC: H01H71/24
Filed: 1917-02-08
Abstract: 113,001. British Thomson - Houston Co., (General Electric Co.). Feb. 8, 1917 Electro-magnetic switches.-In a lock-out switch of the kind employing a single operating winding 10, the winding is carried by the upper limb of the U-shaped magnetic frame 14, the lower limb of which is in three parts, a short central pole-piece 18 and two longer pole-pieces spaced apart on either side thereof. The switch member 11 is pivoted on a magnetic extension of the upper limb and normally rests against the pole-piece 18 with a non-metallic adjustable screw interposed to leave a holding-out gap 26. On the extension 14 is pivoted also a member 17 carrying an armature 28 which, when the widing is energized, is attracted to and bridges the pole-pieces 19. In this movement, a shoulder on the member 17 presses a plunger 30 and compresses the spring 24 which tends to move the switch to the closed position. In the engaged position of the armature 28, flux is shunted from the holding-out gap 26 and the holding-out action is thereby weakened. When the current in the winding falls sufficiently, the holding-out pull is overcome by the combined action of the spring and of the magnetic pull on the switch member 11 by the armature acting as an auxiliary pole-piece, and the switch member consequently moves away from the main polepiece 18 and, coming under the action of the pole-piece 28, is wiped into the closed position, magnetically. Instead of employing the spring 24, which serves also for the resilient mounting of the contact 22 on the switch member, to produce the closing tendency, a separate adjustable spring 32, Fig. 6, located in a housing in the member 17' may be employed. Specifications 23544/14 and 4911/15 are referred to.
Patent GB-200774-A (GB)
Title: Improvements in electron discharge devices
IPC: H01J19/38
Filed: 1923-01-22
Abstract: 200,774. Western Electric Co., Ltd., (Western Electric Co., Inc.). Jan. 22, 1923. Wire fabrics and wirework.-The turns 11 of a helical grid electrode of a thermionic valve are secured to supporting members 10 by tie wires 12 each of which consists of two wires of sinusoidal shape which pass over each turn of the helix and are interlinked behind the supports and between the turns. The tie wire is formed by winding two wires on a mandrel to form a double coil, flattening the coil and pulling apart laterally the sinusoidal wires thus formed so that alternate loops 18, 19, Fig. 7, are free and the remaining loops 17 intertwined. The grid wire is wound on a jig 20 to a definite pitch, the tie wire laid over the turns opposite a groove 21 in the jig, and the supporting rod 10 inserted between the turns of the helix and the tie wire as shown so that the free ends 18, 19 grip the turns and the intertwined loops 17 are behind the support, the jig being then removed.