baber/WOPTO huggingface dataset:
Patent GB-434729-A (GB)
Title: Improvements in thermionic valve circuits
IPC: H01J25/70
Filed: 1934-03-08
Abstract: 434,729. Thermionic valves and valve circuits. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. March 8, 1934, Nos. 7347 and 7348. Convention dates, March 8, 1933 and Aug. 17, 1933. [Classes 39 (i) and 40 (v)] In a detector circuit including a thermionic valve with its plate at a low potential to act as brake electrode reflecting electrons, at least two brake electrodes B, Fig. 2, on a common cylindrical area in one valve V are connected to the oscillatory circuit L, C to which the incoming oscillations are applied and the audiofrequency modulating voltages are taken off from a resistance R in the circuit of a grid G which extends within the electrodes B along the whole length of the cathode F and influences each electrode B to the same extent. The electrodes B form parts of a cylinder divided by planes perpendicular to or through its axis. More than two electrodes B may be connected together alternately to form two groups of equal area. The filament F may have two parts connected in parallel, the centre of the filament being provided with a lead. Screens between the electrodes B may be connected to, or from a unitary structure with the grid G. The capacity provided by the electrodes B in the circuit L, C may be varied by movement of a metal cylinder or plates outside the cylindrical glass wall of the valve, the electrodes B lying close against this wall. Half-cylindrical electrodes B may be in a parallel-wire system or connected to a dipole A, A<1>, Fig. 8. The receiver is then tuned by adjusting the grid voltage by a potentiometer P and the electrodes B are supplied through chokes D and a variable leak resistance W. The Specification as open to inspection under Sect. 91 comprises also the use of the circuit as an oscillation generator. This subject-matter does not appear in the Specification as accepted.
Patent GB-838602-A (GB)
Title: Improvements in or relating to gas turbine plant
Inventor: HOWELL ALUN RAYMOND
IPC: F02C3/067
Filed: 1957-03-06
Abstract: 838,602. Gas-turbine plant; axial-flow compressors. POWER JETS (RESEARCH & DEVELOPMENT) Ltd. Feb. 27, 1958 [March 6, 1957], No. 7384/57. Classes 110 (1) and 110 (3). A gas-turbine plant comprising two rows of axial-flow rotor blades designed for contrarotation and arranged in direct guide blade relationship with one another and two further rows of axial-flow compressor rotor blades arranged in series flow relationship with one another, the tip diameters of which are greater than those of the first-mentioned rows and each of which is in driving connection with a separate one of the first-mentioned rows to rotate therewith in the same sense and at the same rotational speed, has a row of axialflow compressor blades interposed in seriesflow relationship between the two compressor rotor rows. The ducted fan gas-turbine jetpropulsion engine shown comprises an axialflow compressor 1, 2, supplying combustion air to an annular combustion chamber 13 feeding combustion gas to rotor blades 18 driving the compressor 1, 2. The exhaust gases from the blades 18 enter the contra-rotating rows of blades 27, 28 arranged in series-flow relationship with one another. The shrouds 29, 30 of these rows of blades carry rows of axial flow ducted fan blades 31, 32 which are separated by a row of axial-flow stator blades 37. The turbine rotor blades 18 may be designed for zero swirl at outlet in which case the blades 27 may rotate in the same direction as the blades 18. The blades 27, 28 however must contra-rotate and must be in direct guide blade relationship with one another. In a modification, the rows of blades 27, 28 are each replaced by two rows of blades connected to each other. In another modification, Fig. 5 (not shown), air is supplied to a combustion chamber by a compressor formed by rows of blades mounted on the shroud rims of turbine blades. The compressor blades, but not the turbine blades, are separated by rows of stator blades. The application of the invention to a by-pass engine is also described. The by-pass compressor is formed of two contra-rotating rows of blades separated by a row of stator blades. The compressor blades are driven by two rows of turbine blades in direct guideblade relationship with one another. In a further modification, the compressor is formed in two stages one of which is mounted on the tips of the blades of the other. The blades of the inner row are arranged in direct guideblade relationship whereas the blades of the outer row are separated by rows of stator blades. Specifications 586,435 and 594,522 are referred to. Specifications 588,092 and 592,615 are also referred to in the Provisional Specification.
Patent GB-492039-A (GB)
Title: Improvements in separation of liquids and solids
IPC: B01D37/02
Filed: 1937-03-13
Abstract: In separating solids from liquids by filtration, for example in the treatment of coal slurries, the filtering medium is flushed back at intervals with a solution or suspension of a flocculent. A portion of the filtrate to which lime, glue or starch has been added may be used for backflushing.
Patent GB-594597-A (GB)
Title: Apparatus for splicing in a new web and severing the old web close to the splice in printing or other web-fed machines
IPC: B65H19/18
Filed: 1945-03-23
Abstract: 594,597. Feeding webs. WOOD NEWSPAPER MACHINERY CORPORATION March 23, 1945, No. 7440. Convention date, Feb. 16, 1944. [Class 100 (i)] [Also in Group XL] Apparatus for splicing the web from a new roll of paper or other flexible material in a printing, wrapping, winding or other machine to an old web running past it, comprises a control actuator on the under-surface of the new web and means responsive to the movement of the control actuator along the path of the running web to sever the old web immediately behind the splice. Two brushes 38 adjacent the path of the web are connected electrically when a patch 36 of metal foil or metallic paint on the leading end of the new web passes. This operates a relay 40 which energizes a solenoid 42 to project a knife 44 which severs the web running from the old roll 14. The control actuator may be provided on a paster tab T, Fig. 4, of the construction described and claimed in Specification 594,632, and consisting of two parts 28, 29, divided by perforations 30 and adapted to be stuck respectively to the outer surface of the leading end of the new web and to the adjacent surface of the roll, and a part 32 connected to the part 28 near the perforations 30 and adapted to be stuck to the under surface of the web. The part 32 carries the conductive patch 36 and the part 28 is coated with rubber cement 31 which co-operates with a similar coating 45 on the old web to effect the splice in the manner described in Specification 555,707. In a modification a smaller tab consisting of two parts separated by perforations is used, the conductive patch and the rubber cement coating being carried by the web itself. In a further modification the brushes 38 are replaced by a photo-electric scanning device into which light is reflected by the web. A dark patch on the tab or on the web itself reflects little or no light when it passes and thus causes the knife to be projected. Alternatively the light is transmitted through the web instead of being reflected by it. Specification 572,659 also is referred to.
Patent GB-230634-A (GB)
Title: An improved diaphragm for sound reproduction
IPC: H04R7/00
Filed: 1924-03-24
Abstract: 230,634. Jenkins, F. A. E. March 24, 1924. Diaphragms. - A diaphragm for soundreproducing instruments, such as gramophones, consists of a number of thin layers 7 of wood, cemented together under pressure with or without intermediate layers of fine silk or the like, in combination with a metal ring 11 initially of L-section, which is bent around the periphery of the diaphragm, as shown, the whole being expanded by radial pressure to tension the diaphragm. The layers of wood are so arranged that the grain runs in different directions. The material of the diaphragm is rendered waterproof before or after the layers are assembled. A ring 13 of resilient material. which may be rubber, but preferably consists of a mixture of about three parts of glycerine to one part of gelatine (or of equal parts of these ingredients) may be moulded around the built-up diaphragm, the resilient ring enclosing the ring 11 and extending slightly over the layers 7.
Patent GB-537765-A (GB)
Title: Improvements in apparatus for short-wave therapy and the like
IPC: A61N1/06
Filed: 1940-04-26
Abstract: 537,765. Electro medical apparatus. BURCH, C. R., WALKER, C. H., and METROPOLITANVICKERS ELECTRICAL CO., Ltd. April 26, 1940, No. 7549. Addition to 525,425. [Class 81 (ii)] [Also in Group XX] The high frequency therapy applicator of the parent Specification is modified by providing the guard electrode with a removable or adjustable forward extension which masks part of the inner electrode. As shown an iris diaphragm 5 is supported between the peripheral extension 2a of the guard electrode 2 and an angle section adjusting ring 6 held in position by a clamping ring 8 secured by screws 20. Movement of the diaphragm is prevented by a pin 16 carried by a spring strip 15 bearing against a serrated segment 17 on the ring 6. Instead of an iris diaphragm a removable mask secured by a snapon or spring coupling may be used. A detachable spindle 3 serving as conducting lead and as an axis of rotation is fixed to a square coupling sleeve 13 which is sprung into a square sleeve 14 fixed to the guard electrode 2.
Patent GB-555598-A (GB)
Title: Improvements in liquid fuel burners
IPC: F23D11/44
Filed: 1942-06-03
Abstract: 555,598. Vapour burners. SERRANO, L. A. June 3, 1942, No. 7562. [Class 75 (i)] Liquid fuel is supplied through a preheating coiled pipe 1 to an annular vaporizing chamber 11 divided into three compartments connected by upstanding tubes 3, 5 to obstruct the passage of liquid residues. The vapour produced passes by a tube 7 to a nozzle 8 having lateral air inlets 9 and is discharged through a jet aperture 10 into the bell 12 of a flame distributer 13 having horizontal openings 14 for combustion in a space 15 surrounded by the chamber 11. The burner is mounted with a preheating spirit pan 31 on a chamber 27 secured to a stove platform 28. The chamber 27 communicates by valvecontrolled tubes 24, 23 with separate compartments 16, 17 of a fuel tank. The compartments 16, 17 are fitted with air pumps 18, 19 and contain paraffin and heavy oil respectively.
Patent GB-1104770-A (GB)
Title: A low pressure sputtering system
Inventor: TOOMBS PETER ALAN BIRRELL
IPC: C23C14/35
Filed: 1967-02-17
Abstract: <PICT:1104770/C6-C7/1> In a low-pressure sputtering apparatus in which material is sputtered from one or more cathodes 20 on to a substrate 14, a ring shaped tungsten filament 13 is provided to form a plasma, which filament is shielded by a cylindrical member 5. The member 5 and top member 3 of the sputtering chamber 1 have annular grooves which together make a plasma forming chamber.  The plasma leaving the chamber is confined by an axial magnetic field set up by a coil 22.  The sputtering chamber 1 is made of glass, aluminium alloy or non-magnetic stainless steel, and the upper member 3 may be water cooled.  An aluminium anode 17 is connected by a lead 18 to the chamber.
Patent GB-492187-A (GB)
Title: Improved reflector assembly for cyclists and others
IPC: B62J6/04
Filed: 1937-03-16
Abstract: 492,187. Reflectors. McLEOD, J. A. H., and GRUNDY, A. O. March 16,1937, No. 7714. Convention date, March 19, 1936. [Class 97 (i)] A reflector 6 is attached to a trouser clip 1 by being pressed into a socket 4 formed in a widened portion of the clip by pressing outwards the sides of an opening in the clip. Alternatively, the reflector may have a slot into which the clip fits. In either case the clip and reflector may be held together by an adhesive compound.
Patent GB-196453-A (GB)
Title: Improvements in or relating to transformers for wireless circuits
IPC: H01F19/02
Filed: 1922-03-16
Abstract: 196,453. Welch, A. P. March 16, 1922. Transformers.-A transformer for wireless circuits comprises a case A of magnetic material which forms the return path for the magnetic field, the case being provided with thickening ribs B, C, of which the inside rib B supports the core E carrying the windings F. The case may be filled with insulating-material such as wax. and may be provided with an earthing terminal J and with fixing lugs K.
Patent GB-724309-A (GB)
Title: Improvements relating to the electrical heating of irradiated specimens
IPC: H01J37/20
Filed: 1953-03-20
Abstract: 724,309. X-ray apparatus. GENERAL ELECTRIC CO. March 20, 1953 [March 22, 1952], No. 7781/53. Class 98 (1). [Also in Groups XI and XL (a)] An attachment for heating a specimen within apparatus in which the specimen is examined by a beam of radiant energy, i.e. electromagnetic radiation, e.g. X- rays, gamma rays and particles, e.g. electrons, protons, comprises a body of refractory material 11 having an aperture 12 extending therethrough to permit the passage of the beam and an electric heating element 27 and means 23 for holding the specimen 25 in heat transfer relation to the heater, both heater and holder being located within the aperture 12. The heater comprises a bifilar filament 29 supported on a post 30 eccentrically mounted on a refractory plate 31 carrying the leads 35 of the heater and the leads 37 of a thermocouple 36 measuring the temperature of the aperture 12. The heater extends into the upper part 28 of the aperture 12 in the cylindrical ceramic glass or quartz body 11. A thin metal liner 13 with a wife mesh top 14 extends into the lower part of the aperture below the heater and has a metal end flange 15 facilitating its removal. When the specimen 25 is to be examined by reflection of an electron beam, the upper edges of the specimen are pressed against shoulders 26 of the liner 13 by a leaf spring 24 pressing on the lower surface of the specimen and carried by a flanged tray 23 readily removable from the liner 13 forming an electrostatic shield in the aperture 12. The refractory body 11 is mounted within two "cylindrical radiation shields 16, 17 of tantalum or molybdenum to minimise heat loss by screws 19 engaging an end plate 20 on the inner shield 16. A tongued centrally apertured metal plate 33 is mounted on the outside of the refractory plate 31, which is attached to the cylindrical member 11 by screws 32. Centrally apertured end caps 38-41 further reduce heat loss. When a specimen is to be examined by transmission of an electron beam, it is mounted on a wire mesh 48 retained against a flange 49 of a Banged hollow cylindrical member 45 attached by a strap 46 to a base 42 carrying leaf springs 44 adapted to bear on the shoulders 26 of the lining 13. The specimen holder in a diffraction instrument is mounted on a manipulator with a rod as described in Specification 618,657, [Group XL (a)], which is referred to.
Patent GB-163535-A (GB)
Title: Improvements in or relating to apparatus for playing table games
IPC: A63F7/06
Filed: 1920-03-16
Abstract: 163,535. Alkin, R. G. March 16, 1920. Table games.-Relates to apparatus for playing a table game of football of the type which is played upon a board formed with depressions in the centres of which are disposed strikers for projecting the ball over the board, the strikers being actuated from keys controlled by the players. It consists in dividing the board into longitudinal and transverse rows of recessed squares having the differently coloured strikers representing the teams arranged alternately along the rows and operated from keys arranged along the longitudinal edges of the board. As shown, the board 1, Figs. 1 and 2, having a boundary fence 3 is divided into dish - shaped squares at the centres of which are arranged vertically movable and round-headed strikers 8. The strikers are actuated through rods 11 having arms 13 which press against the bottoms of the strikers, the rods being actuated from the keys 9, 10, arranged along the sides of the board. The keys are coloured to correspond with the alternate colours of the strikers and each key is adapted to operate alternate strikers across the board. The strikers are formed with flanges 14 so as to prevent them being forced out of their openings and they are returned to their normal positions either by their own weight or by springs. The goals 4 are provided with goalkeepers 16a which project through slots in the board and are laterally operated by the keys 16 to which they are attached by the rods 18. The game is started by a " kick-off " striker 15 having a conical top and actuated bv a wire 17 which passes beneath the striker and is secured to the ends of the board so that it may be depressed by either of the keys 16 from which the goalkeepers are actuated.
Patent GB-1082479-A (GB)
Title: Production of aromatic carboxylic acids containing reactive chlorine atoms
Inventor: HAHN ERWIN
IPC: C07D277/68
Filed: 1966-02-23
Abstract: Acid chlorides of carboxylic acids of the general formula HOOC-Ar-X-(Cl)n, where Ar is an aryl group, X is a 5- or 6-membered heterocyclic ring which may be fused with Ar, and n is 1 or 2, may be used to prepare reactive dyes.  The specified dyes have the formulae (I) <FORM:1082479/C4-C5/1> (II) <FORM:1082479/C4-C5/2> (III) <FORM:1082479/C4-C5/3> AND (IV) <FORM:1082479/C4-C5/4>ALSO:Aromatic carboxylic acids having the formula HOOC-Ar-X-(Cl)n, where Ar represents an aryl group, X is 5- or 6-membered heterocyclic ring, which may be fused with Ar, and n is 1 or 2, are prepared by heating an aromatic trichloromethyl compound of the formula Cl3C-Ar-X-(Cl)n with concentrated formic acid at 40-120 DEG  C. The heterocyclic moiety may be a thiadiazole, thiazole or pyrimidine residue, the aryl moiety a phenyl, biphenyl or naphthyl radical and the fused aryl/heterocyclic moiety a benzimidazole, benzothiazole or quinoline residue.  The aryl and heterocyclic nuclei may be further substituted by, e.g., sulphonic or halogen groups. Examples describe the preparation of 3-(m-carboxyphenyl) - 5 - chlorothiadiazole - 1,2,4; 3 - (p - carboxyphenyl) - 5 - chlorothiadiazole-1,2,4; 2 - (m - carboxyphenyl) - 4,6 - dichloropyrimidine; 2 - (p - carboxyphenyl) - 4,6 - dichloropyrimidine; 4 - (p - carboxyphenyl) - 2,6- dichloropyrimidine; and 4 - (m - carboxyphenyl) - 2,6 - dichloropyrimidine.  The tricloromethyl starting materials are made by photochemical chlorination of the corresponding methyl compounds.
Patent GB-177051-A (GB)
Title: Improvements in buildings and in building blocks therefor
IPC: E04B2/02
Filed: 1921-03-12
Abstract: 177,051. Frewen, E. J. March 12, 1921. Building-blocks, special shapes of. - Walls are formed of blocks moulded in one piece and having the inner part b displaced laterally and vertically with respect to the outer part a and with both parts provided with horizontal air cavities c, d. Apertures f, g are provided in the corner blocks for communication between the air cavities of adjacent courses.
Patent GB-570584-A (GB)
Title: Improvements in cinematograph apparatus
IPC: G02B27/02
Filed: 1943-05-20
Abstract: 570,584. Zoetropes. SHEPPARD, N. F. May 20, 1943, No. 8003. [Class 97 (i)] Apparatus for viewing a kinematographic picture sequence, of the kind in which successive pictures are viewed through different lenses, comprises a number of viewing lenses l<1> ... l<5> ... arranged in one or more rows in a plane and supported in a frame m opposite to a flat base a, e.g. the page of a book, carrying the images 1 ... 5 ... , the spacing of which is the same as that of the lenses, so that relative movement between an observer's eye and the row of lenses causes each image to be seen through a different lens in succession, giving a kinematographic impression. Opaque or translucent partitions o may extend downwardly to restrict the view through each lens to the corresponding picture, and may serve to support the frame carrying the lenses: The lenses may be moulded integrally of a plastic material, and the screening partitions or supporting means, or both, may also be plastic mouldings integral with, or separate from, the lenses. Two rows of lenses may be used, corresponding to a double row of pictures, which may comprise a cyclic sequence viewed from left to right in one row and from right to left in the other. Fig. 3 shows a double-row picture sequence in which a picture in each row of a pair is viewed alternately, for which purpose the viewing lenses l<1>, l<2> ... are alternately inclined in opposite directions.
Patent GB-272998-A (GB)
Title: Improvements in drinking bowls or troughs for the use of animals
IPC: A01K7/04
Filed: 1926-03-23
Abstract: 272,998. Bingham, G. C., and Bing- ham, A. G. March 23, 1926. Valves actuated indirectly.-In a drinking bowl for animals, eccentrically mounted in a frame e, a valve-actuation member g is pivoted to the support a for the frame e and bears against the rear edge of the bowl f, an adjustable spring h regulating the pressure exerted on the edge of the bowl. The valve d is double-headed and is adapted to close the water passage at both extremities of its movement. In action, on the weight of the bowl diminishing due to water being withdrawn therefrom, the spring h forces down the member g permitting the valve to open; the valve closes as the bowl fills. If the bowl is swung up vertically for emptying or cleaning, the valve drops until it closes the water inlet at its other end. Water pressure or a weight may be employed in place of the spring. Specification 238,019, [Class 26, Closets &c.] is referred to.
Patent GB-442701-A (GB)
Title: Improvements in or relating to thermostatically controlled valves
IPC: G05D23/02
Filed: 1935-03-15
Abstract: 442,701. Thermally-actuated valves. BRITISH BRASS FITTINGS, Ltd., and SPERRYN, G. N., Moorsom Street, Birming- ham. March 15, 1935, No. 8017. [Class 135] A thermally-actuated valve of the kind described in Specification 359,144, comprises a body part a with a valve seat d formed therein and a separate casing 3 carrying the valve member e and the dial setting means k, a joint comprising a metal washer 9 and a compressible washer 8 being provided so that the casing 3 together with the valve l can be detached for inspection and cleaning and re-assembled without disturbing the setting of the valve. The valve member l is screwed onto a member n which is secured to the setting spindle j by a universal connection comprising the ball-end p and cross-pins q engaging in the hollow and slotted end of the spindle behind a flanged ring 6. The valve member l is prevented from rotating by a guide pin 7 and is axially adjusted by rotation of the dial k which is attached to spindle j. The crosspins q in the slotted end of spindle j allow thermal actuation of the valve l by the non- expansible rod f inside a thermal tube e, the end t of the rod f engaging in a recess s in the end of member n.