baber/WOPTO huggingface dataset:
Patent GB-748761-A (GB)
Title: Improvements in or relating to circuits using cold-cathode scaling tubes
Inventor: KANDIAH KATHIRKAMATHAMBY
IPC: H01J17/48
Filed: 1952-04-08
Abstract: 748,761. Electronic counting apparatus. NATIONAL RESEARCH DEVELOPMENT CORPORATION. April 7, 1953 [April 8, 1952; Sept. 19, 1952; Feb. 17, 1953; Feb. 23, 1953], Nos. 8914/52, 23557/52, 4366/53 and 4990/53. Class 106 (1). A scaler or counter comprises a cascade of stages each including a cold-cathode scaling tube (47, 48) and an associated gate (45, 46), a pulse generator 40 providing a transfer pulse at its output for each input pulse, a connection 42 for feeding the transfer pulse to all the gates in parallel, means for causing each input pulse to open the gate 45 associated with the first tube 47 and means for causing a transient output condition arising in a preceding tube coincidently with a transfer pulse, to open the gate associated with the immediately succeeding tube so that the transfer pulses are utilized to drive those scaling tubes having their associated gates in the open position. In a preferred embodiment the discharge normally rests on one of the B cathodes of the tubes 47, 48. An input pulse, Fig. 1 e, at terminal 44 is applied to the trigger of a cold-cathode tube 45 and also causes the pulse generator 40 to raise the potential on line 42, Fig. 1 g, thus causing the tube 45 to fire. The potential on line 41 may also be raised at this time, Fig. 1 f, but, in another embodiment, line 41 is normally held at the higher potential. The higher potentials on the A and B cathodes drive the discharge onto the next K cathode; then, as the generator 40 causes the potential on line 41 to fall sharply, Fig. 1 f, the discharge passes to the next A cathode. Finally, the potential of line 42 is brought back to normal, Fig. 1 g, causing the discharge to move to the next B cathode and thus registering the addition of one unit. When the rise of potential on line 42 drives the discharge onto the zero cathode Ko an output pulse, Fig. 1 h, is developed across a resistor 49 which serves to trigger the gate tube 46 of the next decade almost simultaneously with the input pulse, Fig. 1 e, causing the carry. The positive rise in potential on line 42 is maintained long enough to allow for a succession of carry-overs to pass through all the counter stages. In another version the discharge rests normally on an " A " cathode and each input pulse causes a rise in potential of line 41 followed by a rise on line 42. Other types of multicathode counting tube can be employed. Specifications 680,466, [Group XL (c)], and 748,950 is referred to.
Patent GB-896977-A (GB)
Title: Improvements in and relating to aircraft landing lamps
IPC: B64D47/04
Filed: 1960-03-14
Abstract: 896,977. Aircraft landing lamps. HARLEY, M. C. May 14, 1961 [March 14, 1960], No. 8946/60. Classes 75(3) and 75(4) In an aircraft landing lamp of the type embodying a lamp support hinged to a mounting located in a space in the wing or fuselage of an aircraft, actuating mechanism being provided for moving the support from its normal inoperative position flush with the surface into operative position and returning it to inoperative position, a clutch mechanism is provided between the actuating mechanism and the support so that on failure of the actuating member with the lamp in operative position, the latter can be returned in a controlled manner to inoperative position by the application of force, e.g. wind pressure of predetermined magnitude. The support 4 is carried by a cranked arm 7 mounted on a spindle 8 operated from an actuator 9 through an arm 17a. A disc 11 splined to a disc 11b rigidly mounted on the spindle 8 has a radial tooth 12 having an inclined edge 13 engaging a slot 15 with an inclined edge 16 on a disc 14 keyed to a lever 17 pivotally secured to the arm 17a. A rod 19 passes through the centre of the spindle 8 and carries at one end a plate 20 urged by springs 21 away from a disc 21a on the spindle 8. The shaft 19 has a plate 19a at the opposite end which bears on a plate 22 slidable on the spindle 8 arid carrying clutch plates 23 connected by a bar 24. The lever 17 carries clutch plates 25 connected by a bar 26 and interleaved with the plates 23, with the interposition of cork pads 27. Wind pressure on the lamp above a predetermined value will cause the disc 11 to rotate thereby disengaging the tooth 12 from the slot 15 and axially displacing- the disc 14 against the action of the springs 21 which will urge the clutch plates 23, 25 more tightly into engagement and thereby control the return of the lamp support into inoperative position. The lamp may consist of a combined reflector and filament member which is held in place in the lamp support by spring urged plungers to allow for thermal expansion and to dampen vibration. Specification 698,356 is referred to.
Patent GB-270876-A (GB)
Title: Improvements in the lubrication of transmission gearing
IPC: F16H57/04
Filed: 1926-04-06
Abstract: 270,876. Weller, J. April 6, 1926. Channels in toothed and chain gearing.-One or more annular grooves B, are formed on the inside and within the width of the rim of a spur or chain wheel A, the outer diameter of the grooves being such that they cut through the root circle of the teeth to form small holes or slots C through the rim between the teeth, whereby oil supplied to the grooves B is sprayed through the holes or slots on to the teeth of the meshing wheel or wheels or on to the chain. Oil is supplied to the grooves B through conduits D, E in the spindle and hub or through a pipe.
Patent GB-387865-A (GB)
Title: Improved process of welding
IPC: B23K31/02
Filed: 1932-03-30
Abstract: In joining railroad and tramway rails or other steel parts by casting metal between them, molten steel at 1500 DEG  C. and containing, in addition to the usual 0,8 per cent of carbon, one or more of the following metals up to the percentages stated: nickel 5, chromium 2,5, tungsten 1,5, molybdenum 1, and copper 3, is used and the joint is heat treated in situ in order to restore the physical properties of the metal which has been melted or superheated.  The parts to be joined may be preheated to 650-1200 DEG  C.  For ordinary rails containing carbon 0,2-0,6 per cent and manganese over 0,6 per cent, steel containing the following percentages is used: carbon 0,1-0,4, manganese, silicon, and copper up to 1, nickel 0,2-3, chromium 0,8 and molybdenum and tungsten up to 0,5, and the joint is afterwards heated 900-1000 DEG  C. for 30 minutes.  When very hard steel is to be joined, for instance that containing 0,6 per cent or more of carbon and of silicon, the molten metal contains the following percentages: carbon 0,1-0,6, manganese, molybdenum, tungsten, and silicon up to 1, nickel 0,2-5, chromium up to 2,5, copper up to 3, and the joint is heated to 1000 DEG  C. for 30 minutes, and then to 850-950 DEG  C. for 30 minutes.  When joining rails having a fine grain through water quenching and containing 0,2 per cent of carbon and 0,4 per cent of manganese the molten metal contains the following percentages: carbon 0,1-0,4, manganese, silicon, and copper up to 1, nickel 0,2-3, chromium 0,8, and molybdenum and tungsten up to 0,5, and the joint is heated to 1000 DEG  C. for 30 minutes, quenched in water or an air emulsion thereof and then heated to the higher transformation point to temper or merely cooled by the water to 800-900 DEG  C.  By thus adjusting the composition of the cast metal and the heat treatment it is stated all the zones of the joint have similar properties as regards strength &c.
Patent GB-1408672-A (GB)
Title: Azo-pyrazolium dyestuffs
IPC: C09B44/14
Filed: 1973-02-26
Abstract: 1408672 Basic azo dyes PRODUUITS CHIMIQUES UGINE KUHLMANN 26 Feb 1973 [24 Feb 1972 28 Dec 1972] 9230/73 Heading C4P [Also in Division C2] New basic diazo dyes of formula wherein R 1  is H, alkyl or aryl, R 2  is alkyl, R 3  is aryl when R 1  is alkyl and alkyl when R 1  is H or aryl, R 4  is H or alkyl, R 5  is an alkyl, hydroxyalkyl, cyanoalkyl, acylaminoalkyl, or a group of formula Y is H, alkyl, alkoxy or acylamino, Z is H or alkoxy and X is an anion are prepared by alkylating the corresponding azo dyes having no R 2  substituent and wherein R 3  may be H. Acyl is defined as R.CO wherein R is an aliphatic or aromatic radical. The intermediate azo dyes are prepared by coupling diazotized 5-amino-4- chloro-pyrazoles with substituted anilines. The dyes are used to colour polyacrylonitrile and acid-modified synthetic polyamide and polyester fibres in red shades.
Patent GB-1095077-A (GB)
Title: Rearwardly directed viewing mirror arrangement
IPC: B60R1/06
Filed: 1966-03-03
Abstract: 1,095,077. Rear view mirrors for vehicles. Y. TALBOT. March 3, 1966 [March 5, 1965], No. 9281/66. Heading B7J. A rear view mirror for vehicles comprises a casing including a part having an opening in which a mirror is installed in a movable ring surrounding the mirror and made of chromed metal or of synthetic plastics surfaced with chromium galvanically or vapour deposited, the ring having its outer wall curved symmetrically with respect to the centre plane of the peripheral member perpendicular to the main axis thereof, so that the mirror with its ring can be adjusted in the rearward opening to tilt the optical axis relative to the casing. In an embodiment, Fig. 1 (not shown), the mirror 1 is circular and is clamped in the hollow ring 2 split at 3, the outer periphery of the ring crosssection being curved with a radius R equal to one half the external diameter of the ring. The easing 6 includes a movable mirror support 5 of channel metal having a part-spherical front surface and formed with the rearward opening 4 which has a slight conical flare. A metal disc 9 bears on the mirror 1 and has a central eye engaged by a tension spring 10 which also engages in the head 11 of a straining bolt 11a rigidly connected to a centring disc 12 and held in a tapped socket 17 of the casing 6. A cup 14 on the bolt 11a is frictionally clampable to the mirror support 5 by a nut 16 and rubber buffer 15. The internal surface of the ring 2 may be flared conically towards the rear. Holes 23 are provided in the ring 2 for engagement by a wire hook for moving the mirror. In a modification (not shown), the head of the bolt 11a is formed as a hook engaging directly with the eye of the metal disc 9 and the buffer 15 is replaced by a compression spring. In another embodiment, Figs. 2, 3 and 4 (not shown), the rectangular mirror (31) is supported in a rectangular ring (32) which is adjustably held directly in the conically flared rectangular opening (20) of the casing (19), and the straining screw (11b) is hooked into an eye of the mirror plate (29) and screwed into a threaded tube (18) of the casing (19). The casing (19) is secured by screws (22) via a rubber or synthetic plastics plate (21) to the vehicle bodywork (8), and is tapered at one side only. The ring (32) has its periphery curved with different radii (R1) (R2) of curvature along longer and shorter sides, and is manufactured as a closed cast or moulded part of metal or synthetic plastics which is subsequently split to allow a spring fit of the mirror (31).
Patent GB-766114-A (GB)
Title: Improvements in or relating to reduction of c carbon content in tar
IPC: C10C1/00
Filed: 1955-03-30
Abstract: 766,114. Filters. KOPPERS CO., Inc. March 30, 1955 [April 16, 1954], No.9295/55. Class 46. A process of filtering tar to provide a tar filtrate substantially free of " C1 " particles comprises passing it at a linear velocity of from 7 to 9 feet per second in the range 4 to 16 feet per second across the surface of a filter screen 12. (" C1 " particles range in size from 0À2 to 5 microns and consist at their centre of pitch-like heavy hydrocarbon material but are of varying composition and softer from the centre to the periphery). The incoming tar 10 is at a temperature of from 160‹ to 220‹C. and a pressure of from 22 to 50 p.s.i. g. The annular zone 13 is from 0À15 to 0À35 inches wide. There forms on the screen a tenacious membrane predominantly of " C1 " particles and of a substantially uniform thickness of from 0À01 to 0À025 inches. Instead of heating the tar its viscosity may be decreased by addition of a solvent in which " C1 " particles are insoluble, e.g. heavy coal-tar naphtha, pyridine and nitrobenzene. The screen 12 may be a Dutch weave twill screen having 20 single or triple warp strands and 250 single woof strands to the inch. The figures for a single warp screen may be as high as 28 and 500 respectively. Alternatively a square weave screen having either 325 warp and woof strands or 400 such strands to the inch may be used. The preferred material is stainless steel : nickel is an alternative. Where the tar is liquefied by solvents inert materials such as synthetic fibres and glass may be used. In Fig. 5 (not shown) the tar is fed to the region between two flat parallel screens, filtrate being collected on either side. A number of such devices may be arranged in parallel. Alternatively a single screen may be used.
Patent GB-609960-A (GB)
Title: An improved protractor for the graphical tracing of rays in an optical system
IPC: B43L7/12
Filed: 1946-03-26
Abstract: 609,960. Protractors. DICKSON, J. H., and RAYNER, W. H. March 26, 1946, No. 9363. [Class 97 (iii)] A protractor for tracing the paths of refracted rays of light comprises a transparent disc 1 or other lamina bearing a datum line 2 representing the normal, a datum point 3 representing the point of incidence, a scale of angles 4, and a sine scale 6 with its zero on the datum line 2 and with a series of lines extending from the graduations in a direction parallel to the line 2, a radial arm 9 bearing a scale of refractive index 11 with its zero at the datum point 3 being provided; the length on the sine scale from zero to the 90 degrees line is equal to the length on the radial arm from the datum point to the mark for unity refractive index. The radial arm 9 may be pivoted at the centre 3 of the disc 1 together with a second arm 8 or may be supplied as an accessory. Preferably, the radial arm 9 carries a cursor 13 with a magnifier 14 and index line 18, further magnifiers being provided at the centre 15 and at the end 16 of the arm 8. Verniers and micrometer or tangent screws may be provided and the disc 1 may be adjustably carried by a parallel motion linkage.
Patent GB-327846-A (GB)
Title: Improvements in articulated motor road vehicles
IPC: B62D53/08
Filed: 1929-03-23
Abstract: 327,846. North, O. D., Hugh, P. G., and Scammell Lorries, Ltd. March 23, 1929. Controlling - apparatus, arrangements of transmission gear in conjunction with.-An articulated motor road vehicle having a power unit connected to a load unit bv a turntable having a hollow king-pin has a pipe passing through the king- pin to pass exhaust gases into a heating coil in an oil &c. tank on the load unit or to fill or empty the tank by means of a pump, the pipe or a rod passing therethrough being axially slidable to operate the brakes &c. The turntable 2 has a hollow king-pin 7 carrying a pipe 13 provided with flexible connections 10 to the exhaust pipe or silencer 9 and to a heating coil in the oil tank 1. The pipe 13 is slidably mounted in the king-pin and can be moved axially by means of a brake &c. connection 20 and bent lever 16 to operate a second bent lever 25 and brake rod 22. In a modification, a rod 31, Fig. 2, is slidablv mounted in the pipe 13 and connected to brake &c. linkage 16, 22. A cut-out valve 27 is provided in the exhaust pipe. The oil &c. tank may be filled or emptied by means of an engine-driven pump connected to the tank through the pipe 13.
Patent GB-527430-A (GB)
Title: Improvements in or relating to methods of the production of iron in powder form
IPC: B22F9/22
Filed: 1939-03-25
Abstract: 527,430. Iron manufacture. ASSOCIATION DES OUVRIERS EN INSTRUMENTS DE PRECISION. March 25, 1939, No. 9438. Convention date, April 15, 1938. [Class 72] Iron in finely divided or powdered form is obtained by subjecting pieces of iron of small dimensions such as rods, tubes or scrap iron to a complete oxidation, converting the iron oxide so obtained into powder by pulverizing or granulating, and then reducing the oxide, the reducing treatment being carried out alternatively under super-atmospheric and sub-atmospheric pressure. The oxidation may be carried out by using water vapour and the hydrogen recovered may be used in the reducing stage. The oxidation is carried out in an electrically-heated rotating oven into which water vapour from a steam producer is passed. The oxide which has been reduced to fine powder is then placed in an oven 6 heated electrically by resistance 3. Very pure hydrogen from a source 9 is passed through a pressure reducing valve 11 then by a pipe 10 into a high pressure container 12 provided with a water draw-off valve 13, and a drying device 7 with a conduit 7 leading to the oven 6. The oxide in the latter may be agitated, preferably by rotating the oven and the gases produced by the reduction are passed through a pipe 8. a condenser 18, valve 25, a water-separator 19 and a valve 26 to a low pressure container 21 being withdrawn therefrom by a compressor 14 and passed into the container 12 for re-use. By suitable control of the valves 15, 26, the oven can be operated alternatively under super-atmospheric or subatmospheric pressure. If the iron powder is to be used for loading coils, the temperature used is 480‹-570‹C., the super-atmospheric pressure 5-10 kg. per sq. cm., and the other pressure may be as low as 1/10 mm. After reduction the material in the oven 6 is de-gassed by heating to 400‹C. for about 24 hours and then reducing the temperature to 200‹C. or less, the valve 25 being closed, then valve 24 opened and the pump 23 started thus reducing the pressure in the oven. Finally the oven is filled with inert gas, such as nitrogen, when the temperature is reduced to 200‹C. or less. The material is then cooled in the oven before it is withdrawn.
Patent GB-727292-A (GB)
Title: Safety device for preventing collapse of telescopic towers
IPC: E04H12/18
Filed: 1953-04-07
Abstract: 727,292. Safety catch gear for platform elevators. ALLEN, A. F. April 7, 1953 [April 8, 1952], No. 9439/53. Class 78 (3). [Also in Group X] In a telescopic tower having a platform 22 for workmen adapted to be raised, on a tower comprising three telescoping tubes 14, 18, 20, which is extended by an hydraulic ram 42 and cables 50, 70 and sheaves 60, 72 associated respectively with tubes 20, 18, the axles of the sheaves are mounted in slots 56, 80 in the blocks 52, 76 that carry them and are spring- pressed so that in the event of a cable breaking the springs depress the associated axle and force dogs 96, 92, Fig. 8, against the inside of the tube 14 or 18 and prevent collapse of the tube. The hydraulic cylinder 32 is fixed to the top of the tube 20 by a trunnion 34 and the ram 42 is connected by a sleeve 44 to the block 52. One end of the cable 50 is anchored to the ram 42, passes over a sheave 36 on the trunnion 34 and over the sheave 60 and the other end is anchored to the upper end of the tube 18. The cable 70 passes round the sheave 72 and is anchored at its ends to the tops of tubes 14, 18. Specification 724,932 is referred to.
Patent GB-1518661-A (GB)
Title: Apparatus for sterilising water with bromine
IPC: C02F1/76
Filed: 1977-03-07
Abstract: 1518661 Sterilizing water MINES DE POTASSE D'ALSACE SA 7 March 1977 [15 March 1976] 09490/77 Heading C1C Apparatus for sterilizing water with bromine wherein only a portion of the water is so treated, by passing it into a bromine vessel by a pipe extending into the lower part of the vessel, the treated water being removed from the upper part of the vessel, the inflow pipe being perforated above the bromine level in the vessel.
Patent GB-554787-A (GB)
Title: Rochelle salt piezoelectric crystal apparatus
IPC: H03H9/02
Filed: 1942-07-09
Abstract: 554,787. Piezo-electric crystals. STANDARD TELEPHONES & CABLES, Ltd. July 9, 1942, No. 9542. Convention date, May 23, 1941. [Class 40 (v)] A rectangular element is cut from a crystal of the Rochelle salt type so that its major surfaces are parallel to the plane containing two of the principal axes of the crystal and so that the longest edge of the element cuts one of the crystal axes at an angle of 22.5 degrees, the dimensional ratio of width to length being in the range of .567 to .822. Fig. 1 shows a plate of dimensions W, L, T cut with its major plane at right-angles to the X-axis of the natural crystal, and the major length dimension marking an angle of 22.5 or 67.5 degrees to the Y-axis. This gives equal excitation and minimum coupling for the two modes, fundamental longitudinal dependent on dimension W, and double shear mode dependent on the ratio W/L. These may be excited by two pairs of electrodes 10, 11 and 12, 13. Fig. 5 and the crystal may be supported at nodal points 5. The impedance of the crystal is determined by the thickness, while the relative impedances of the two modes may be varied by varying the angle of the dividing line 7 between the electrode, relative to the axes of the crystal plate. A small earthed electrode strip may be inserted between the adjacent electrodes to reduce the mutual capacity. Also the lower pair may comprise a single electrode. Similar arrangements are described for Y-cut and Z-cut crystals. Specifications 531,662, 532,925, 533,204, 542,452, 553,457, 554,788 and 554,789 are referred to.
Patent GB-1215256-A (GB)
Title: Pyran derivatives and their use in perfume compositions
IPC: C07D309/18
Filed: 1969-02-21
Abstract: 1,215,256. Pyran derivatives. CHEMISCHE FABRIEK NAARDEN N.V. 21 Feb., 1969 [23 Feb., 1968], No. 9569/69. Heading C2C. [Also in Division A5] The invention comprises a mixture of compounds of the formulµ The mixture may be prepared by heating hexylene glycol under reflux in the presence of copper sulphate to give 2-methyl-1-pentene-4-al which is allowed to stand with p-toluene sulphonic acid as n-pentanal.