baber/WOPTO huggingface dataset:
Patent GB-274156-A (GB)
Title: Improvements in and relating to dyes and dyeing
IPC: C09B9/00
Filed: 1926-03-15
Abstract: 274,156. Drescher, H. A. E., Harris, J. E. G., Wylam, B., Thomas, J., and Scottish Dyes, Ltd. March 15, 1926. Grant of Patent opposed. Sulphuric esters; leuco compounds of vat dyes, esters of; tertiary amine-sulphur trioxide compounds.-Vat-dyestuffs and quinones generally are converted into water-soluble derivatives of their reduction products by treatment in the presence of a tertiary base with a quaternary ammonium halide, a metal, and a compound of a tertiary base with sulphur trioxide. The latter compounds are obtained by interaction of a tertiary base and an alkylsulphuric halide, chlorsulphonic acid, oleum, or sulphur trioxide. The quaternary ammonium halide may first react with the metal and organic base, then the vat-dyestuff be added, and finally the tertiary amine-sulphur trioxide compound. The reaction may take place in an inert atmosphere should the intermediate products be readily oxidizable. The quaternary ammonium halide causes the reaction to take place more readily than when it is absent. The reaction is applicable to indigoid and thioindigoid dyes, such as dichlor- and dibrom-indigo, and to anthraquinone vat dyes such as dibenzanthrone, indanthrone, flavanthrone, and anthraquinoneacridine dyestuffs. The products, which are in some cases soluble in solvents other than water such as alcohol and pyridine, may be applied to cotton, wool, natural and artificial silk, and other fibres by dyeing or printing and the shades of the parent dyestuffs developed by hydrolysis and oxidation thereon, for example, by means of acid ferric chloride, alkaline hypochlorite, perborate, or permanganate solutions. Examples are given of the preparation of products from (1) indigo, methylpyridinium iodide, zinc, pyridine, und the product from pyridine and methylchlorsulphonate; (2) dimethoxydibenzanthrone, methyl chloride or ethyl bromide, zinc or copper, pyridine and the compound from pyridine and sulphur trioxide; (3) thioindigo, ethylbromide, zinc, pyridine, and pyridine-sulphur trioxide; (4) thioindigo, methylchloride, zinc, pyridine, and dimethylaniline sulphur trioxide. Specifications 245,587, 247,787, 251,491, 260,638, 260,647, 261,139, 263,898, 271,533, and 271,537 are referred to.
Patent GB-136423-A (GB)
Title: An Improved Apparatus for Educational and Amusement Purposes.
Inventor: WOOD HENRY CLAYTON
IPC: G09B17/00
Filed: 1919-03-24
Abstract: 136,423. Wood, H. C. March 24, 1919. Charts and diagrams.-In a toy for teaching children the alphabet and the meaning of words, a roller, which can be turned by a handle C, is mounted in a casing B, so that a word D, its initial letter P, and an illustration A appear simultaneously at holes in the casing B. The casing B may be dispensed with.
Patent GB-162875-A (GB)
Title: An improved combination pocket knife
IPC: B26B11/00
Filed: 1920-03-11
Abstract: 162,875. Dine, J. March 11, 1920. Saws, setting.-A combination pocket knife, comprising a large blade having a blunt end which forms a screwdriver, a tin opener, which also acts as a cigar cutter, and a two-part pivoted handle, is formed with spanner holes and slots in the handle for setting the teeth of hack saws &c.
Patent GB-949933-A (GB)
Title: Improvements relating to a compressed air distributor valve for heavy vehicles
IPC: F16K11/16
Filed: 1960-03-02
Abstract: 949,933. Compressed air brakes. FABBRICA ITALIANA MAGNETI MARELLI S.p.A. March 2, 1960 [March 26, 1959], No. 7357/60. Headings F2E and F2F. In a compressed air distributer valve having a plurality of cylinders contained in a single casting with an air reservoir and air cleaning unit Rd, air distributing cylinders A, B, C are arranged symmetrically around the main vertical axis and the operation of each cylinder is obtained by means of a balancing element 1 operated through a control spring 40 by a control push-rod 7 connected to the brake pedal, the balancing element 1 being of starshape with control extremities 2 equal in number to the number of cylinders, the balancing element having at least one further extremity 5 subjected to the action to an advancement spring 42 giving an initial movement to the balancing element 1 towards the distributing cylinder A which is to be operated first and the control spring 40 works on the balancing element 1 by means of a reaction rod 8 connected to the control push-rod 7 so that relative motion between the parts can take place. An extension 44 is attached to an upper support retainer cap 6 of the control spring 40 so that an electrical stop switch I is operated when there is movement of the control push-rod 7.
Patent GB-1456664-A (GB)
Title: Method of cleaning an article utilizing ultrasonic or other  vibrational energy
IPC: B08B3/12
Filed: 1973-02-15
Abstract: 1456664 Cleaning apparatus DAWE INSTRUMENTS Ltd 29 Jan 1974 [15 Feb 1973 1 Aug 1973] 7396/73 and 36596/73 Heading A4F [Also in Divisions B1 C7 and H4] Cleaning apparatus comprises a tank 1 in which cleaning liquid 24 is to be cavitated by ultrasonic or other vibrations, and at least one transducer 22 for supplying vibrational energy to a first radiating surface on a plate 26 spaced from a sound radiating surface on a part 15 of a wall 12 of the tank, the space between the radiating surface containing a liquid 20 capable of transmitting the vibrational energy but not cavitated thereby to the same degree as the liquid 24. Erosion of the part 15 is less than it would be if the transducer(s) 22 supplied vibrational energy directly thereto. The cleaning liquid 24 may be a mixture of water and cleaning agent and the liquid 20 may be ethylene glycol. The amount of cavitation produced in the liquid 20 preferably does not exceed 25% of that produced in the liquid 24. In an alternative embodiment the part 15 is inclined and mounted on an inclined bottom wall 25, Fig. 2 (not shown) of the tank 11, the inclination of the part 15 permitting any air trapped between it and the first radiating surface to move to the uppermost edge of the part 15 so that it does not interrupt the transmission of vibrational energy.
Patent GB-374851-A (GB)
Title: Improvements in or relating to electromagnetic relays
IPC: H01H50/58
Filed: 1931-03-10
Abstract: 374,851. Light current relays. AUTOMATIC ELECTRIC CO., Ltd., Strowger Works, and SMITH, S. R., Rock House, Old Swan, both in Liverpool. March 10, 1931, No. 7409. [Class 38 (v).] The armature 4 of a telephone relay consists of a flat plate extending between L. shaped polepieces 2, 3 secured to the ends of the core carrying the energizing coil 1. The armature is provided with a knife-edge pivot with respect to a -T shaped extension 6 of the polepiece 2 by having extensions 7 extending into lateral recesses of the polepiece, the armature being retained therein by resilient arms of a member 10 screwed to the polepiece. Contact spring 5 sets adapted to be operated by the armature are mounted at one or both sides of the energizing coil, the armature being provided with extended arms 12 fitted with insulated buffers 13 through which motion is imparted to the spring sets. The retractive movement of the armature produced by the contact springs is limited by a headed stud 9 secured to the polepiece 3 and passing through a slot 8 formed in the armature. Fixed comb-like members 15 are provided for positioning the relatively fixed contact springs. The spring sets are arranged with the plane of the individual contact springs parallel to the plane of the armature and both fixed and moving springs being mounted in a pile at the side of the coil substantially perpendicular to the plane of the armature.
Patent GB-702280-A (GB)
Title: Improvements relating to steam turbines
Inventor: COWLIN FREDERICK JOHN
IPC: F01D9/06
Filed: 1951-03-30
Abstract: A turbine casing is of the approximate composition:-carbon 0.15 per cent. maximum, molybdenum 0.5 per cent., vanadium 0.2-0.3 per cent., remainder iron.  The turbine nozzle boxes are of high creep resistant alloy steel of the approximate composition:-carbon 0.16 per cent., chromium 2.75 per cent., molybdemum 0.55 per cent., tungsten 0.55 per cent., vanadium 0.5-0.75 per cent., remainder iron.
Patent GB-1501601-A (GB)
Title: Hoisting device
IPC: B66C23/20
Filed: 1976-02-25
Abstract: 1501601 Hoisting device SVENSKA FLAKTFABRIKEN AB 25 Feb 1976 [8 April 1975] 07470/76 Heading B8H A hoisting device, shown attached to a platform stand having elements 2, 3, 4, 23 and in use for workmen attaching ventilation elements 10 to a roof (not shown), comprises an outer cradle 5 pivotally mounted on tube 3 and pivotally mounting an inner cradle 6 on pivots 14. Hoisting means 8 is carried by the inner cradle 6 and includes a wire 8a attached to a chain 8b passing over a roller 9 with a groove 9a for the wire 8a and with recesses 9b for the chain links. The chain 8b carries a beam 8d from which the ventilation elements 10 may be suspended. As shown a ventilation element 10 has been hoisted up to the inner cradle 6. Continued hauling on the wire 8a causes the inner cradle 6 to pivot to a vertical position 15<SP>1</SP>, shown in broken lines (see arrows 15a, 21a), whereupon further hauling on the wire 8a causes both cradles 5, 6 to pivot jointly about the tube 3 into a position, indicated by broken line 23, parallel with tube 23. Upon continued hauling on the wire 8a the ventilation element 10 passes from the cradles 5, 6 to rest on the tube 23. The cradles 5, 6 then pivot back under their own weight into their initial position.
Patent GB-145154-A (GB)
Title: Improvements in or relating to tip wagons, lorries or the like
IPC: B60P1/32
Filed: 1919-03-25
Abstract: 145,154. Rapson, F. L. March 25, 1919. Tipping-wagons.-In a wagon of the type In which the body is mounted on one or more pivot pins connected to a block or blocks adapted to traverse a rotatable screw-threaded rod or screwthreaded rods, anti-friction balls p, Fig. 4, are disposed in co-operating grooves o formed in the rod or rods m and block or blocks l. The body c is connected by a pivot pin a to a tubular member k, which carries the block l, and is fitted with a guide roller e. The rod m is rotated by a detachable handle s, and enclosed by a casing v. The body c is tilted by the engagement of rollers mounted on the body with inclines h, i, the incline h being formed with a hook j to limit the movement of the body. The invention may be applied to side or end-tipping wagons.
Patent GB-367587-A (GB)
Title: Improvements in or relating to the electro-deposition of palladium
IPC: C25D3/50
Filed: 1931-03-12
Abstract: 367,587. Electrodeposition of palladium. POWELL, A. R., DAVIES, E. C., and JOHNSON, MATTHEY, & CO., Ltd., 78, Hatton Garden, London. March 12, 1931, No. 7601. [Class 41.] Palladium is deposited as a bright adherent plating from a solution of a palladosammine compound the acid group of which is not reduced under the plating conditions, such as palladosammine sulphate, nitrate, or phosphate. A conducting salt and a small quantity of an acid such as sulphuric, nitric, or phosphoric acids or of an alkali are preferably added to the bath. A suitable bath is made by dissolving 30 gms. of palladosammine nitrate in 1 litre of warm water to which is then added 50 gms. of sodium sulphate or nitrate together with 10 gms. of phosphoric acid or 10 c.c. of strong ammonia solution. A small quantity, e.g. 0À01 per cent, of a colloid such as dextrin, glue, or a vegetable gum may be added to refine the grain size and improve the brightness of the deposit. The plating temperature should be above 40 C. preferably 65-80 C. A current density of 3-25 amps. per square foot at 1À5 volts, or higher may be used. The bath is regenerated when the palladium content has fallen below 0À5 per cent.
Patent GB-750796-A (GB)
Title: Improvements in pile driving hammers
Inventor: BELL NOEL GONNE
IPC: E02D7/10
Filed: 1953-03-20
Abstract: 750,796. Fluid-pressure hammers. BRITISH STEEL PILING CO., Ltd. June 18, 1954 [March 20, 1953], No. 7756/53. Addition to 686,474. Class 122(3) [Also in Group XXI] In a pile-driving hammer as disclosed in the parent Specification in which a cylinder 4 acting as a ram is reciprocated on a stationary piston 1 by gaseouspressure fluid distributed by an automatic control valve 6 mounted in the piston, the valve actuating means is disposed wholly within the inner circumference of the cylinder. The valve spindle 7, Fig. 4, projects into a recess 8 at one side of the piston and has secured to it a double-armed lever 17 actuated by cams mounted on the inner wall of the cylinder. Pressure fluid supplied through pipe 16 and conduit 3 to the valve chamber 9 is admitted by the valve alternately to one of the cylinder ends 15 or 13 through ports 10 or 12 whilst the other end is opened to the exhaust chamber 14 through port 11. The hammer is supported in a cradle comprising a pair of vertical channel-sectioned members 22, slidably engaged by lugs on the cylinder, connected at their lower ends to an anvil 23 attached to the piston rod 2 and at their upper ends to a crosshead 24. The hammer may be operated differentially by making the upper piston rod diameter greater than that of the lower piston rod and supplying fluid continuously to the upper cylinder end 15, through ports in the upper piston rod, the valve 6 controlling the admission and exhaust of pressure fluid to and from the lower cylinder end 13.
Patent GB-592034-A (GB)
Title: Combined photographic printing and viewing arrangement
IPC: G03B27/32
Filed: 1944-04-26
Abstract: 592,034. Photographic contact and projection-printing apparatus. URBACH, F. April 26, 1944, No. 7757. [Classes 98 (i) and 98 (ii)] Apparatus is described for making prints by contact or projection upon sensitive material yielding a visible image directly, and for viewing them during printing by illuminating them with light to which the sensitive material is insensitive and observing them through means receiving this light only. Ordinary print-out material may be used. The viewing of the image may take place with the printing light screened from the print by a movable element, or with the printing light temporarily switched off; or it may take place while printing is actually going on if a filter absorbing light from the printing source is interposed between the print and the viewing means. Fig. 1 shows a projection-printing box in which light from the printing source 1 passes through a blue filter 9 and condenser 2 to a negative 3, and is projected therefrom by a lens 4 on to the print-out material 5. The viewing means comprises a source 6 of light, e.g. red, to which the material 5 is insensitive and a viewing telescope 8, fitted with a red filter 10, receiving light from the print via the lens 4 and an opaque mirror 7 pivoted at 11 so that it may be swung up into the dotted inoperative position for printing and let down for viewing, in which latter position it screens off the printing light from the print. Instead of an opaque mirror 7, a semi-transparent mirror fixed in the inclined viewing position may be used, so that printing and viewing may occur simultaneously ; or for the same purpose the inclined mirror may be circular with alternate apertured and opaque sectors and may be continuously rotated. In a further modification, wherein prints are to be made on transparent or translucent sensitive material, the mirror 7 is dispensed with, the print being illuminated on its front face by the viewing light source, and its rear face being viewed, without interrupting the printing, through a lens fitted with a red filter. Fig. 3 shows a contact printing box in which printing light from a source 14 passes through a condenser 15 to a negative film 12 in contact with a crossed print-out film or paper 13 fed between spools 16 on a frame pivoted at 17 so that, when the film is to be viewed, the film may be turned down into the dotted position out of the path of the printing light, where it is illuminated by a source 19 of viewing light fitted with a red filter 20, and viewed through a lens 18. In a modification using transparent or translucent print-out material, the negative and positive films remain in contact, a blue filter is located between the condenser and negative film, the print is illuminated on the rear face by the viewing light source, and this face is viewed, without interrupting the printing, through a lens fitted with a red filter. It is stated that if the print exhibits colour, the contrast of the observed print may be varied by using different colour filters in the viewing device.
Patent GB-1283516-A (GB)
Title: Improvements in current limiting spark gaps with means for regulating gap voltage
IPC: H01T1/04
Filed: 1970-02-18
Abstract: 1283516 Lightning arresters GENERAL ELECTRIC CO 18 Feb 1970 [24 Feb 1969] 7775/70 Heading H2H A lightning arrester comprises a spark gap assembly including a number of arc chambers each having a pair of arc-establishing electrodes 12, 12a, a coil 22 for lengthening and driving the arcs into arc cooling surfaces 30-33 in each chamber and an arc movement retarding wall 35 mounted in each chamber. As shown four chambers formed by adjacent pairs of insulating plates 2-7 house four pairs of electrodes, one electrode 12, 13, 14, 15 of each pair being illustrated in Fig. 1. Copper pins 16-21 connect the pairs of electrodes in series with the coil 22 and with a block 10 of non-linear resistive material via a conductive plate 9. A pre-ionizer 24 and a resistor 25 are connected across each pair of electrodes and the wall 35 may be moulded integrally with each lower insulating plate of each chamber or the wall may comprise electrically conductive material. The wall prevents the arc initially reaching surfaces 31, 32 until its current has been reduced. In a modification two separated walls are provided.
Patent GB-1171521-A (GB)
Title: Device for Damping the Movement of the Pivotable Element of a Gyrometer
Inventor: DELPY ANDRE
IPC: G01C19/38
Filed: 1967-02-17
Abstract: 1,171,521. Torsional vibration dampers. SOC. DE FABRICATION D'INSTRUMENTS DE MESURE (S.F.I.M.). 17 Feb., 1967, No. 7812/67. Heading F2S. In a system for damping the oscillations of a gyrometer cylinder 1, which is pivotally mounted within its casing by a torsion bar 2, four equi-angularly spaced blades 4, which are rigidly secured to a dome 5 which surrounds the correspondingly conically shaped end 1a of the cylinder, project into corresponding slots 3 in the end 1a of the cylinder to provide, in each slot, two zones A, B which communicate with each other through a passage E so that, when the cylinder pivots about its axis x-x, oil, contained in the casing, is transferred from one zone to another in each slot through the passage E, the blades 4 being axially displaceable in the slots 3 in order to vary the cross-sectional area of each passage E in accordance with the variations in temperature of the damping oil to keep the damping torque constant. The dome 5 is guided by axially extending-surfaces 9, 10. Movement of the blades 4 inwardly, or outwardly, according to the rise or fall of temperature respectively, is accomplished by a crossshaped bimetallic member 6 which is secured by a nut 7 to the central part of the dome 5 and has the outer ends of its four arms 6a, 6b &c. located in an annular groove 11 in a member 12 by means of a pin 13, the member 12 being axially adjustable externally to pre-set it at the required position at ambient temperature by means of a micrometer adjusting screw 15. The latter operates a longitudinally movable rod 16 secured to the member 12, the adjusting arrangement also including a gasket 17, a gland 18, and a lock-nut 19. Temperature variations of damping oil causes the central part of the bimetallic member 16 to move axially and correspondingly alter the size of the passages E.
Patent GB-831587-A (GB)
Title: Improvements in or relating to absorption refrigeration systems
IPC: F25B43/04
Filed: 1958-03-11
Abstract: 831,587. Refrigerating. CARRIER ENGINEERING CO. Ltd. March 11, 1958 [April 11, 1957], No. 7824/58. Class 29 In a continuous cycle absorption refrigerating system, in which the absorbing solution is lithium bromide and water, means are provided for controlling the capacity of the system and for actuating the controlling means to prevent overconcentration of solution leaving the generator. Cooling water is supplied to the condenser 10 by pipe 26. After flowing through the condenser pipes 9 the water leaves through pipe 27 in which is a control valve 40 driven by a motor 41' energized by control 61. An element 41 sensitive to the temperature of chilled medium leaving the pipes 5 of evaporator 4 is connected to control 61 and causes variation of the setting of valve 41, the flow of cooling water through the condenser and thus the capacity of the system. If the absorbing solution in the generator 8 is over-concentrated with a consequent tendency to crystallization a drop in the liquid level in the absorber 3 takes place. An element 84 is placed in the absorber and is such that when the element is covered by liquid a switch 80, normally closed, is inactivated. When liquid level falls below element 84 the switch is closed opened and control 61 is caused to energize motor 41' closing valve 40 completely. There follows less condensation in the condenser and thus less refrigerant is boiled off in the generator giving a more dilute absorbing solution. Over-concentration occurs especially on starting up due to accumulation of non-condensible gases in the system and the invention it is stated inactivates the refrigerating system on starting up while purging takes place. Specifications 787,298, 800,249 and 809,878 are referred to.
Patent GB-254649-A (GB)
Title: Improvements in colour meters or systems of displaying or determining colours on charts
IPC: G01J3/52
Filed: 1926-03-22
Abstract: 254,649. Vogel, J. M., and Plaut, C. S. March 22, 1926. Colour scales,-Comprises a colour chart system whereby the shades, grays or tints of any colour may be determined and defined numerically for purposes of reference. The whole series of colours is divided into thirty-six primary colours, Fig. 1, of a purity of tone of 100 per cent. To obtain a shade of the colour selected it is mixed with its complementary or opposite primary colour, and to obtain a gray or tint thereof it is mixed with white. The oppositely arranged colours when mixed will neutralize to produce black. For each colour is provided a card, Fig. 2, divided horizontally and vertically into ten divisions. The square numbered 100 represents the primary colour, e.g. yellow, and the squares 100 - - 91 are tints formed by mixing white with the primary colour in definite proportions. Shades of these tints are obtained by mixing in definite proportions quantities of the complementary colour, in this case, violet until a black, 10 is produced at one end of the upper row and grays towards the other end of that row. It is stated that any colour may, by means of this set of cards, be indented and indicated numerically.
Patent GB-113887-A (GB)
Title: An Improved Tool for Cutting and Re-pointing Fibre Needles for Gramophones and the like.
Inventor: KEAST WILLIAM JOHN
IPC: G11B3/48
Filed: 1917-06-01
Abstract: 113,887. Keast, W. J., Keast, M., and Keast, E. M. June 1, 1917. Tools for reproducing. - An appliance for cutting and re)- pointing fibre needles for gramophones &c. comprises t w o plates a, b pivoted at a<1> to give a scissors-like action. The back-plate b is provided with a cutting-blade c which works over a faced portion c' of the front-plate a. An oblique triangular duct d leading through the front-plate a receives the needle at a suitable angle. The plates are kept normally open by a spring g, and cutting is effected by thumb and finger applied to the disks f, f<1>.