baber/WOPTO huggingface dataset:
Patent GB-401727-A (GB)
Title: Cathode ray tube
IPC: H01J29/94
Filed: 1932-05-19
Abstract: 401,727. Cathode - ray tubes. ARDENNE, M. VON, 19, Jungfernstieg, Lichterfelde, and LOEWE, S., 10, Wiesenweg, Steglitz, both in Berlin. May 19, 1932, No. 14240. Convention date, May 23, 1931. [Class 39 (i).] In gas-filled cathode-ray tubes with a cathode 1 and an anode 5 producing only one cathode-ray which is deflected by plates 6, 7 or other means before reaching the fluorescent screen 10, the gas in the space traversed by the 'ray is ionized by an auxiliary discharge or other means independent of the main discharge. The ionization is sufficient to maintain the focusing of the ray for high and fluctuating rates of deflection, but is insufficient to neutralize the ray before it reaches the screen 10. The ionization may be produced by a glow discharge between electrodes 3, 4 or preferably electrodes 8, 9 or by an arc discharge between pointed electrodes or by radioactive substances in pockets on the wall of the tube or by thermionic electrodes. A thermionic electrode may act as the cathode 1 of the main discharge and also as the anode of the auxiliary discharge. The ionization should be as even as possible. A gas of low molecular weight such as hydrogen is preferred for the filling, the rapid diffusion of ions resulting in a large ionized area. A tungsten - thorinm or barium - alloy cathode may be used.
Patent GB-1136302-A (GB)
Title: Method and apparatus for converting digital character codes to video signals for producing visual information on a display screen
IPC: G09G5/22
Filed: 1966-03-31
Abstract: 1,136,302. Monogrammic signs. RADIO CORPORATION OF AMERICA. 31 March, 1966 [7 April, 1965], No. 14241/66. Heading G5C. [Also in Division H4] Characters are displayed on a screen, e.g. a cathode ray tube screen, by applying video pulses to certain dot positions in a selected scan line and character space on the screen to form a part of the character and similarly applying video pulses to dot positions in subsequent scan lines to compose the complete character, a first group of gates being used to identify the scan line position and a second group of gates being used to identify the dot positions. A characteridentifier pulse is applied to certain gates of the scan line select NAND gates 17 by way of diode matrix 18 and also scan line select pulses YP1 to YP7 are applied to certain gates. These pulses gate through to certain output leads the character identifier pulse. The output leads of gates 17 connect through a diode matrix 9 to dot select NAND gates 21. Also applied to gates 21 are dot select pulses XP1 to XP5. Horizontal and vertical synchronizing pulses are mixed with the video signal from the gates 21 in a video amplifier 24 and the mixed signal is applied to a control grid of a cathode ray tube 22. Horizontal and vertical drive pulses are supplied from a synchronizing generator 26 to control unit 27 which supplies 7 pulses to scan line select gates 17 and X pulses to dot select gates 21. Also the control unit applies reset pulses to multi-vibrators of a character register 13 which receives the character code read out of a buffer 12 to which the digital data messages are fed from a magnetic core memory.
Patent GB-495962-A (GB)
Title: Improvements in and relating to silencers for gaseous currents
IPC: F02M35/14
Filed: 1937-05-22
Abstract: 495,962. Silencing gaseous currents; air-cleaners. SERVAIS, F. J. J. May 22, 1937, No. 14292. [Class. 7 (ii)] [Also in Group XXVIII] A silencer, also serving as a filter, particularly for the air intakes of internal-combustion engines, air compressors, &c., but which may also be used as an exhaust-silencer, comprises a plurality of unobstructed passages disposed radially in a transverse plane at one end, or intermediate the ends, of a further main passage, all the passages being surrounded with soundabsorbing material. The Figure shows an intake silencer comprising a casing 10 with a sleeve 11 for connection to the intake pipe, and having a central passage 12 surrounded by sound-absorbing material 13, which may be as described in Specification 447,376. Leading into one end of the passage 12 are a series of radial inlet passages 17, each surrounded by sound-absorbing material. The end plate 16 of the casing may be lined with rubberized asbestos or felt. The radial unit may be separate from, and of greater diameter than, the axial unit. Also a radial unit may be connected to two axial units, one at each side thereof and leading to two air intakes.
Patent GB-554602-A (GB)
Title: Improvements in or relating to electric insulation
IPC: C08K5/02
Filed: 1941-11-07
Abstract: 554,602. Polystyrene compositions. STANDARD TELEPHONES & CABLES, Ltd., and NEW, A. A. Nov. 7, 1941, No. 14358. [Class 2 (iii)] An electric insulating material consists of a mixture of polystyrene and a polyhalogenated derivative which is symmetrical about its centre of gravity and is either (a) a single ring aromatic hydrocarbon, (b) an aliphatic hydrocarbon or (c) an araliphatic hydrocarbon, the halogen atoms being symmetrically disposed about mid centre of gravity, said symmetrically halogenated hydrocarbon having a molecular weight between 160 and 600 excepting such as boil below 220‹C. at atmospheric pressure ; the percentage proportion of symmetrically halogenated hydrocarbon in the mixture is 1-50, by volume, when liquid, and 1-20, by weight, when solid. Specified halogenated hydrocarbons are 1.1.2.2. tetrabromoethane, 1.3 diiodopropane, 1.2.2.3 tetrabromo-propane, 1.5 di-bromo - n - pentane, 1.1.2.2. tetrabromoethylene, hexachlorbutadiene 1.3, 1.2.3.4 tetra bromobutane, 2.2.3.4. tetrabromobutane, 1.2.3.4. tetrachlorobutane, 4.4<SP>1</SP> dichlorodiphenylmethane, 2.5 dichloro - p - xylene, 1.2.4.5. tetrachlorbenzene, 1.3.5. tribrombenzene and 1.2.4.5 tetrabrombenzene. Specifications 490,814, 540,300, [Group XXXVI], and 546,990 are referred to.
Patent GB-836679-A (GB)
Title: Improvements in or relating to instruments for testing electrical conductors carrying alternating current
IPC: G01R19/145
Filed: 1958-05-06
Abstract: 836,679. Voltage-detecting apparatus. SCHIFFMAN, A. May 6, 1958 [May 9, 1957], No. 14390/58. Class 37. In an instrument for detecting the presence of an A.C. in a conductor, a probe is brought into galvanic contact with the conductor to tap off an A.C., which is then amplified and rectified, and the resulting D.C. is applied to operate an oscillator which feeds a loud-speaker, thus giving an audible induction of the presence of A.C. in the conductor. In one embodiment the probe P, Fig. 2, is coupled by a small capacitance, e.g. an air gap, to an input terminal E connected to an amplifier V1, V2 the output from which is rectified by a diode D1. The oscillator comprises a multivibrator V3, V4, arranged to oscillate when an output from D1 is received. The oscillator output is amplified by V5 and fed to a loud-speaker 9 through transformer U. The circuit is tested by removing probe P from the conductor and closing switch 4, thus connecting V1, V2 as an oscillator whose output is applied to D1 as before. The multivibrator frequency may be varied by altering R11, R12 to avoid confusion with interfering noises. The testing circuit and probe may be combined into a single portable instrument, Fig. 3 (not shown).
Patent GB-495878-A (GB)
Title: Improvements in collapsible chairs and to tables combined therewith
IPC: A47B85/04
Filed: 1937-05-25
Abstract: 495,878. Chairs and tables. VINEGRAD, C. May 25, 1937, No. 14543. [Classes 52 (ii) and 52 (iii)] Relates to collapsable chairs especially of the kind comprising a seat 3, Fig. 1, pivoted at 4 between pairs of inverted V-legs 1, 2 pivoted together at 12. According to the invention, a back 7 is provided which extends below the seat and bears against the rear legs 2 or a transverse bar 10 in the open position, and which in the closed position extends approximately the whole length. As shown, an angle bracket 8 is attached to the back and is pivoted at 9 to the seat. The back may be held in the open position by a clip or lock. The collapsed chair is intended to be fitted between table supports or in side recesses 18, Fig. 7, in the supports 15. The ends of the legs may bear against a shoulder 20 in the recess and may be held in place by fitting over a rail or shoulder and the chair may be further secured by a spring clip 22 beneath the table top 14.
Patent GB-529385-A (GB)
Title: Improvements in or relating to carrying cases for typewriters and the like
Filed: 1939-05-16
Abstract: 529,385. Carrying cases for typewriters &c. FRASER, P. M. G. May 16, 1939, No. 14565. [Class 52 (i)] [Also in Group XVII] A carrying case for a typewriter, calculating or like machine comprises a base member A on which the machine is adapted to be secured, having outwardly folding side walls B hinged to the ends thereof and a cover which includes the front wall E, top D and back wall C, the rear edge of the base being hinged to the lower edge of the back wall so that when the case is opened the back and side walls lie in the same plane as the base, and the top and front walls assume a vertical position. The lateral edges of the back, top and front walls interlock (for example by flanges C<SP>1</SP> and grooves Bl) with the edges of the side walls when the case is closed. A rack G for stationery is carried by the top D, and pockets F for envelopes are mounted on the side walls. Spring clips K, K<SP>1</SP> retain the side walls in erect position, and a flexible hinge E<SP>2</SP> allows the front wall to assume the vertical position when the case is opened.
Patent GB-252901-A (GB)
Title: Improvements in or relating to crucibles
IPC: B01L3/04
Filed: 1925-06-05
Abstract: 252,901. George, Ltd., W. & J., and Smith, J. D. M. June 5, 1925. Crucibles.- A porcelain, metal, fused silica, or other crucible for use in chemical analysis has a lid 6 fitting within the body as shown and having its flange 6<b> formed with serrations or openings 6<c>.
Patent GB-255601-A (GB)
Title: Improved hinged panel and carrier frame therefor, particularly adaptable as a roof ventilator for a motor-car
IPC: B60H1/26
Filed: 1925-06-05
Abstract: 255,601. Sparks, A. E. June 5, 1925. Valves.-A hinged roof ventilator &c. comprises a glazed frame n having a downwardly and outwardly extending flange o hinged to a square frame f having two horizontal webs g, i, the top one having an oblique flange h. The flange o makes a water-tight joint with the webs h, i when closed. The panel may be hinged by pins q engaged in pieces brazed to the frame.
Patent GB-1223967-A (GB)
Title: Heat-recoverable sheet of macromolecular material and process for its manufacture
Inventor: HESLOP WILLIAM ROSSE
IPC: B29C61/00
Filed: 1969-03-20
Abstract: 1,223,967. Heat-recoverable sheet of polymeric material. RAYCHEM CORP. 20 March 1969 [22 March, 1968], No. 14640/69. Heading B5B. [Also in Division F2]  A process for expanding a sheet or strip of a polymeric material capable of having the property of heat-recoverability imparted in it, which comprises applying a force to the sheet or strip in a direction perpendicular to the sheet or strip, the force being sufficient to reduce the thickness and increase at least one of the other dimensions of the sheet or strip, in the absence of tension in the sheet or strip, the temperature of the sheet or strip while the force is applied being, for a crystalline material in the range of from 60‹ C. to the crystalline melting point of the material or a temperature not exceeding the upper limit of the crystalline melting range of the material or, for a non-crystalline material, in the range of from 60‹ C. to the softening point of the material. The force is preferably sufficient to reduce the thickness and increase only one of the other dimensions of the sheet or strip. The "softening point" of the material is measured as specified in ASTM 648 using the 264 p.s.i. stress. As shown in the drawing, polymeric sheet material 3 to be treated is withdrawn from the supply reel 1 (which is provided with a let-off braking mechanism in the form of a roller 2) over an idler roll 4 by a slowly rotating driven steam-heated roller 5 and is expanded in the longitudinal direction at a nip 6 between roller 5 and steam-heated roller 7 which is driven at a higher peripheral speed than roller 5 to accommodate the expanded sheet. The expanded sheet 3 is then passed over a fast-moving cooling roll 9 and the sheet 3 is then passed over an idler roll 10 and on to wind up roll 11 having a constant torque wind-up drive 12. In an example, a 6-inch wide strip, 0À050 inch thick, of high-density polyethylene is irradiated by passing it under a 1 MEV high energy electron beam and then passed through a steam-heated triple roll mill. The first two rollers are maintained at 104‹ C. and the third roller, which has the highest peripheral speed, is water cooled. The selective speeds of the strip on the input and output sides of the mill are in the ratio 1: 1À35 giving a longitudinal expansion of 35%. A 69 inch length of the strip is coated with mastic and wrapped around a 20-inch diameter pipe, fastened and recovered by heating with infra-red rays from a catalytic heater. The width of the recovered sleeve is 5¥ inches.
Patent GB-562097-A (GB)
Title: Improvements in or relating to fluid-pressure-sensitive devices
IPC: G01L7/04
Filed: 1942-10-21
Abstract: 562,097. Bourdon gauges. GRANT, C.R.A. Oct. 21, 1942, No. 14794. [Class 106 (ii)] In a fluid-pressure-sensitive device, a Bourdon tube 3 is adjusted by an abutment in the form of a lever 7 with a U shaped end which engages the flexible part of the tube at a position intermediate its end so as to limit the effective length of the Bourdon tube whereby the usual movement multiplying device between the Bourdon tube and the indicating needle is rendered unnecessary. The lever 7 is slotted at 9 so as to be adjustable angularly and radially. The tube may have external longitudinal flanges, fins and ribs.
Patent GB-240211-A (GB)
Title: Improvements in or relating to water filters
IPC: B01D29/01
Filed: 1924-06-19
Abstract: 240,211. Hall, D., Kay, J. H., and Hall & Kay, Ltd. June 19, 1924. Filters with lose filtering-materials.-Water from an inlet, pipe 5 passes into a rotatable cylinder 13 mounted in a, container 4 and provided with a perforated longitudinal strip 15 on which a layer of gravel 16 rests. The water flows through the gravel 16 and the perforations into the space between, the cylinder and the container where it escapes through an outlet pipe 6 leading to a three-way cock 7. When it is desired to clean the filter the cock 7 is closed, a cock 12 controlling a drain-pipe 11 communicating with the interior of the cylinder 13 through a chamber 10 opened, and the cylinder rotated in its bearings by a hand-wheel 19. Rods 17 extending along the cylinder stir up the gravel which is prevented from entering the inlet and the outlet pipes by baffles 20. After a sufficient number of rotations, the perforated portion of the cylinder is brought to the top, the cock 12 closed, and the cock 7 turned to bring the container into communication with a waste pipe 9 through which the water in the container and the matter in suspension therein flows. The cylinder is then turned back to the normal position and the cock 7 turned to permit the flow of water through the ordinary passage. A paddle or similar device, that may be operated independently of the cylinder, may replace the rods 17.
Patent GB-477398-A (GB)
Title: Method and apparatus for thermoplastic moulding
IPC: B29C45/14
Filed: 1936-05-26
Abstract: 477,398. Moulding steering-wheels by injection. MACKLIN, J. W. May 26, 1936, No. 14887. [Class 87 (ii)] An article is coated with thermoplastic material such as cellulose acetate by supporting the article in a mould and injecting the material into the mould at a number of points separated uniformly round the mould and projecting the material on to surfaces of the article which face in opposite directions. The process is carried out in a mould comprising two parts 1, 2 which enclose a space rather larger than the article to be coated which is a steering-wheel in the example shown. The meeting edges 14, 15 of the mould parts are stepped to prevent escape of the plastic material. Plastic material is injected into the mould from cylinders 18 through passages 26 which enter the mould at uniformly separated points 30. Passages 27 lead the material to various parts 29 of the article which face in opposite directions. Passages 25 are provided for the circulation of hot or cold fluid. Fig. 6 shows a method for holding the wheel in the mould and for ejecting the wheel when coated. A member 42 forming a part of the hub fits over a projection 38 formed on the ejecting cylinder 33 which rests on a plate 37 which may be operated manually or automatically The position of the cylinder 33 may be regulated by a nut 36. A central cylinder 18 may be provided to ensure the uniform coating of the hub of the wheel and in this case the hub is provided with a cap 28 having grooves in communication with the central passage 26 and with the space 8 surrounding the hub. Fig. 9 shows a modification of the mould in which the cavity for the rim of the wheel is formed in rings 53, 54 let into recesses in the mould blocks. These rings are provided with annular grooves 56 for the circulation of hot or cold fluid. The injection cylinders 18 are provided in a separate block 61 which is superposed on the mould blocks 1, 2. The cylinders 18 may be filled from auxiliary cylinders 65 in which the plastic material is melted.
Patent GB-273884-A (GB)
Title: Improvements in and relating to stylographic and fountain pens
IPC: B43K8/16
Filed: 1926-06-14
Abstract: 273,884. Saha, R. N. June 14, 1926. Reservoir pens; air and ink supply arrangements ; stylographs; nib-retracting arrangements. -In stylographic or ordinary fountain pens having a vented secondary ink chamber formed in the point-section, as described in Specification 18583/01, the secondary chamber is adapted to trap a quantity of air behind the ink charge in the chamber. As shown in Fig. 1, the secondary chamber 2 is formed by means cf a hollow plug 3 mounted in the end of the point-section 1, and communicates with the interior of the reservoir through oppositely-placed orifices 6 in the plug. Air can enter through one or more apertures 5 in the point section close to the writing-point. In use, air enters through the apertures 5 and passes into the reservoir through the orifices 6, ink flowing into the chamber through the orifices 6 until its level rises above the apertures 5. In a modification, the apertures 5 are formed in a part separable from the main part of the point-section 1. In a fountain pen provided with a nib and feed-bar, the air enters through a passage on the underside of the feed-bar. In the form shown in Fig. 4, air enters by way of a single aperture 5 into a concealed annular chamber 8 between the barrel 16 and the point-section 1 and passes into the plug 3<A> through apertures 9, and thence into the chamber 2 through apertures 9<c> in a tube 9<B> extending from the plug 3<A>. Slots 6<A> are formed in the walls of the plug 3<A> for the passage of ink to the secondary chamber. The aperture 5 is concealed and protected by being formed in a groove 5<A> in the point-section. In a pen provided with a retractible writing-point, the end of the rod 13, Fig. 7, is formed as a hollow plug 3 communicating with the atmosphere and the reservoir by inlets 5, 12 respectively.
Patent GB-649603-A (GB)
Title: Improvements in and relating to the manufacture of cellulose acetate
IPC: C08B3/20
Filed: 1948-06-02
Abstract: A primary cellulose triacetate, having an acetyl content calculated as acetic acid of at least 61.5 per cent, which has been prepared by acetylating cellulose under conditions p  maintaining the fibrous structure, is dissolved in a solvent mixture of acetic acid and methylene chloride containing at least 40 parts by volume of acetic acid and at least 40 parts by volume of methylene chloride per 100 parts by volume of the mixture, and after adding water and a hydrolysing catalyst, the cellulose acetate is hydrolysed in solution at a temperature not less than 45 DEG  C. until it has become acetone-soluble.  The secondary cellulose acetate is then precipitated from the solution. Preferably the solvent mixture is one containing equal parts by volume of methylene chloride and acetic acid.  The concentration of the cellulose triacetate may be 10-20 per cent by weight.  For the hydrolysis, sulphuric or perchloric acid or mixtures of these acids may be used.  There may be 4-8 per cent of water and 0.2-2.0 per cent of acid, based on the weight of the solution to be hydrolysed.  Temperatures of 50-70 DEG  C. may be used. Hydrolysis may be effected in a closed container or in a vessel with reflux condenser so that the proportion of methylene chloride to acetic acid remains substantially unchanged.  The treatment may take 4-6 hours.  In an example, cotton linters are pretreated with glacial acetic acid and then acetylated with a mixture of acetic anhydride, carbon tetrachloride, sulphuric acid, and perchloric acid.  After 6 hours at 25 DEG  C., a solution of sodium acetate in acetic acid and carbon tetrachloride is added to neutralize the catalysts.  The fibrous cellulose acetate is then centrifuged, washed, and dried.  It is then dissolved in a mixture of equal volumes of acetic acid and methylene chloride, and small proportions of water and sulphuric acid are added.  The solution is stirred at 50 DEG  C. for 4 1/2 hours. Sodium acetate solution to neutralize the acid is added and then an excess of water to precipitate the secondary cellulose acetate. Solutions of the product may be used for obtaining artificial filaments, fibres, yarns and like materials of good dry and wet tenacity and extensibility.  Other examples describe the preparation and treatment of cellulose acetate from high and low grade wood-pulps. Specifications 337,366, [Class 2 (ii)], and 369,215 are referred to.
Patent GB-695873-A (GB)
Title: Photographic filter layers
Inventor: GANGUIN KARL OTTO
IPC: G03C1/83
Filed: 1950-06-15
Abstract: 1 - Lauroylamino - 4 - o  - cyanoacetobenzene is prepared by heating 4-o -cyanoacetoaniline with lauroyl chloride.ALSO:Dyes of the general formula <FORM:0695873/IV (c)/1> wherein R1 is an aryl radical which carries a substituent containing an alkyl chain of at least 5 carbon atoms and which may be substituted by an acylamino group, H2 is H, alkyl or substituted alkyl, and R3 is alkyl or substituted alkyl, and wherein the phenylene nucleus may carry substituents, are prepared by reacting compounds of the general formula R1COCH2CN with the anil of the appropriate N-substituted p - aminobenzaldehyde.  Numerous aldehydes are specified.  Where R2 and R3 are substituted alkyl, the substituent may be a halogen atom or a hydroxy, alkoxy, nitro, cyano, sulphonic acid, carboxylic acid, or carboxylic ester group.  The reaction may be effected by heating the reagents together in methanol, with a catalyst such as piperidine or triethylamine, or by mixing the reagents in aqueous alkaline solution.  1 - b  - Octadecenylsuccinamido - 4 o  - cyano; o  - (p - N : N - di - (carboxyethyl) - aminobenzylidene) - acetobenzen is prepared by refluxing a methanol solution of 1-b -octadecenylsuccinamido - 4 - o - cyanoacetobenzene, q-(b  : b 1 - di - carboxyethylamino) - benzaldehyde-anil, and piperidine.  1 - b  - Octadecenylsuccinamido - 4 - o  - cyano : o  -(p - N - b  - sulphoethyl : N - methylaminobenzylidene) - acetobenzene, 1 - lauroylamino - 4 - o  - cyano : o  - (r  - N : N - di - (carboxyethyl) - aminobenzylidene)-acetobenzene, 1 - b  - octadecenylsuccinamido - 4 - o  - cyano : o  - (r  - N - b  - carboxyethyl : N - methylaminobenzylidene) - acetobenzene, and 1 - b  - octadecenylsuccinamido - 4 - o  - cyano : o  - (r  - N - b  - b 1 - disulphoethylamino - 2 - methylbenzylidene) - acetobenzene are similarly prepared.  Specifications 695,875 and 695,876, [both in Group XX], are referred to.