baber/WOPTO huggingface dataset:
Patent GB-761279-A (GB)
Title: Improvements in or relating to microwave devices
IPC: H01J23/30
Filed: 1954-05-11
Abstract: 761,279. Travelling-wave tubes. WESTERN ELECTRIC CO., Inc. May 11, 1954 [May 14, 1953], No. 13717/54. Class 39(1). [Also in Group XL(b)] Energy is coupled out of the main helix 21 by means of a surrounding helix 22 or 25 which is provided with a reflectionless termination 23, 24 or 26 at a point where the " beat-wave " has its maximum amplitude. The helices, when taken separately, are designed to show equal axial wave phase velocities ; when coupled, the phase velocities are slightly different, resulting in the " beatwave " fixed in space. Preferably the helices are wound in opposite directions and the length of the coupling helix is a quarter wave length of the beat-wave. A mathematical discussion shows that by suitably selecting the ratio of the radii of the helices the length of the beat-wave may be made stationary over a substantial frequency band, Fig. 3 (not shown). Helix 22 may be used both to vary the gain of the tube and to eliminate back-coupling. In the first case the forward wave transfers all its energy to a wave in 22 which attains the maximum voltage at the reflectionless impedance 24 where it is completely absorbed. In the second case, the backward wave is similarly completely absorbed in termination 23. Output helix 25 transfers output energy to line 27 while absorbing backward wave energy in termination 26. In another form functioning similarly to helix 22 two quarter beat-wave helices, Fig. 1 (not shown), terminate at their adjacent ends in " pancake " spirals between which is placed absorbent material. Bifilar or multi-wire helices may be used. Specification 689,290 is referred to.
Patent GB-491745-A (GB)
Title: Improvements in stocks or neck cloths for personal wear
IPC: A41D25/00
Filed: 1937-05-18
Abstract: 491,745. Stocks or neck cloths for personal wear. MITCHELL, C. H. May 18, 1937, No. 13770. [Class 141] A stock or neck cloth for personal wear comprises two strips A<2> each secured to one end of the band portion a of a double collar, each strip being of substantially the same width as the band portion a of the collar for the length lying between the band and top portions of the collar, and then increasing in width to the normal width of a stock, so that when the ends of the strips A<2> are folded over and secured by a pin C they cover the front of the collar.
Patent GB-991495-A (GB)
Title: Lined dispensing package for fluent substances
IPC: A61J1/06
Filed: 1963-04-08
Abstract: 991,495. Lined packages. IVERS-LEE CO. April 8, 1963 [June 14, 1962], No. 13821/63. Heading B8C. A package for a fluent substance D consists of two layers A, B of a flexible material heat sealed together around their edges 10 with a compartment 3 for the substance and the inner surfaces being coated with a material 8 impervious and inert to the substance. The two identical sections A and B comprise an outside layer 1 of a strong flexible material bonded to an inside layer 2 of heat sealable material and are preformed by pressure moulding to provide the recess 3 for the contents and the edges 10 which are joined together by heat sealing. An impervious coating 8 is applied to the internal surfaces of the recesses 3 and extending into the boundary areas 10, so that seepage of the contents into the seam is prevented by the adjacent layers of impervious coating being squeezed together along their marginal portions 9 during the sealing operations. An extension recess 5 is provided with two notches 7 which are torn on opening to provide a discharge orifice. Heat sealing is initially applied only to zones bounding the recess 3, zones around the extension 5 being left open until after filling when they are heat sealed to complete the package.
Patent GB-670490-A (GB)
Title: A method of producing esters of p-aminosalicylic acid
Filed: 1949-01-26
Abstract: Esters of p-amino-salicylic acid of the formula <FORM:0670490/IV (b)/1> where X is an alkoxy group with 3 or 4 carbon atoms, are obtained by subjecting to catalytic hydrogenation a compound of the formula <FORM:0670490/IV (b)/2> where Y is a nitro, azo or carbobenzyloxyamino radical and Z is hydrogen or a benzyl group.  An example is given of the preparation of propyl and butyl esters.
Patent GB-400872-A (GB)
Title: Improvements in typographical composing machines
IPC: B41B11/18
Filed: 1933-05-15
Abstract: 400,872. Type-bar-making machines. INTERTYPE CORPORATION, 360, Furman Street, Brooklyn, New York, U.S.A.- (Assignees of Freund, H. R. ; 360, Furman Street, Brooklyn, New York, and Willis, Le R. W. ; Stamford, Connecticut, both in U.S.A.) May 15, 1933, No. 14052. Convention date, May 25, 1932. [Class 100 (iii).] Magazines ; assembling matrices.-To facilitate the handling of the larger type faces, particularly those of 72-character founts, the magazine is widened at the lower end, at least a portion of the increased width being disposed at the left-hand side, so that some of the channels extend beyond the vertical line passing through the assembler star-wheel. The magazine may also be widened at the right-hand lower end, whilst retaining its width substantially within the limits of the standard assembler-belt. A widened magazine 1, Fig. 1, may be arranged above a magazine 2 of standard width, both magazines communicating with a common set of passages 3 formed by the guides of the assembler-front. In a modification, the face of the spaceband-box 8, Fig. 2, and its deliverychannel 5 are arranged on an oblique line, to permit of further widening of the magazine at the left-hand side, and the assembler-elevator 6 is arranged to travel in a corresponding oblique path. Specification 14582/90, [Class 100, Printing, Letterpress &c.], is referred to.
Patent GB-921014-A (GB)
Title: Improvements in and relating to circuit arrangements for automatic re-adjustment of the background brightness and the contrast in a television receiver
IPC: H04N5/58
Filed: 1959-04-24
Abstract: 921,014. Television. PHILIPS ELECTRICAL INDUSTRIES Ltd. April 24, 1959 [April 29, 1958], No. 14068/59. Class 40 (3). In a television receiver, automatic adjustment of background brightness and contrast in accordance with room brightness is effected by means of a photo-sensitive resistor 23 which forms part of potentiometer network 21, 22, 23, 31 and 32 connected between the supply terminals +Ub, - Ub and providing a brightness control potential from the junction of resistors 31 and 32 for the grid 12 of the cathode-ray tube and a contrast control potential from the junction of resistors 22, 23 and 31 for the screen 23 of the video output valve 1. In a first modification, Fig. 4 (not shown), the brightness control potential is obtained from a tapping on resistor 22, the arrangement being intended for use where the cathode-ray tube grid potential exceeds the video amplifier screen potential. A second modification, Fig. 5 (not shown), incorporates a non-linear resistor in the potentiometer network. The Specification discusses the design of the circuit and quotes typical circuit values.
Patent GB-1493424-A (GB)
Title: Lamps
IPC: F21V7/00
Filed: 1975-04-07
Abstract: 1493424 Lighting fitting including a reflector SIEMENS AG 7 April 1975 [8 April 1974 27 Feb 1975] 14228/75 Heading F4R A lamp includes a bulb 6 with a linearly extending light emitting portion 63 and a reflector 10 in the form of a truncated pyramid with a quadrilateral light exit opening at the major end thereof, with a socket mounted on the reflector to hold the light emitting portion 63 of the bulb 6 along a line joining two opposite corners of the pyramid. As shown, the reflector is square in cross-section and is made up of two truncated pyramids of different slope, each side 1, 2, 3 and 4 of the reflector being formed from a single metal sheet bent in the appropriate place and the individual sides being connected together by gluing, riveting or flanging, for example. The bulb 6, e.g. a metal halogen discharge bulb, is mounted in sockets 61, 62 at each end thereof, and the sockets, arranged in openings 120 and 420 in opposite corners of the reflector, are adjustable in a plane perpendicular to the reflector opening 100, Fig. 2, to vary the light distribution.
Patent GB-1277191-A (GB)
Title: Improvements in or relating to pyrotechnic compositions
Inventor: HASTINGS GARTH WINTON
IPC: C06B33/02
Filed: 1960-04-22
Abstract: 1277191 Pyrotechnic compositions AVIATION, MINISTER OF 19 April 1961 [22 April 1960] 14297/60 Heading C1D A rubbery pyrotechnic composition is made by mixing at a temperature above 75‹ C. (for example 90-110‹ C.) a polysulphide liquid polymer, a rubber-forming agent, an oxidizing agent, and a substantial proportion, for example, 25-60% by weight, of a metallic powder, and curing the mixed composition. Preferably mixing is carried out at low pressure to remove gas and water. Rubber-forming agents specified are lead peroxide and a mixture of carbon black, p-quinone dioxime and diphenyl guanidine. Suitable metal powders are magnesium, aluminium and zinc. The oxidizing agent may be an alkali metal or alkaline earth metal nitrate or perchlorate. In examples, flare compositions are made from "Thiokol" (Registered Trade Mark) rubber, magnesium, and potassium perchlorate; for a green flare, barium nitrate and boron are included, for a red flare strontium nitrate, and for a yellow flare sodium nitrate. Smoke compositions are made from Thiokol rubber, zinc, zinc oxide, potassium perchlorate, and hexachloroethane, with the addition of coloured substances if desired. Reference is made also to the addition of magnesium stearate to assist blending and of oxalates. The mixed composition may be extruded and cured by heating at 70‹ C. for 18-24 hours.
Patent GB-495964-A (GB)
Title: Manufacture of products containing nitrogen and sulphur
IPC: C08G73/04
Filed: 1937-05-22
Abstract: Transparent thermoplastic resins, insoluble in acids and alkalies, are prepared by carrying out the reaction described in the parent Specification in the presence of elementary sulphur. The product may be emulsified in aqueous media, e.g. alkali lye, water, or viscose and the emulsion added to cellulose hydrate spinning solutions.  In examples, ethyleneimine, polyethyleneimine, N-benzylethyleneimine, or 1 : 2-propyleneimine are reacted with solutions of sulphur in carbon disulphide.
Patent GB-1005297-A (GB)
Title: Improvements in or relating to conveyors
Inventor: WHEELER ERIC
IPC: B65G47/00
Filed: 1963-04-10
Abstract: 1,005,297. Conveyers for flowable solid material. REDLER CONVEYORS LTD. July 10, 1964 [April 10, 1963], No. 14384/63. Heading B8A. In Figs. 1, 2, an en masse-type conveyer includes a shaft 21 of which the height above the bottom plate 20 is adjustable to regulate the depth of flowable solid material, e.g. grain, conveyed by the conveyer. The longitudinal axis of the shaft 21 is eccentrically positioned with respect to extensions 22, 23 of the shaft and the shaft is rotatable by a manually operable lever 30. A disc 32 on the extension 22 serves both as an indicator for the position of the shaft 21 and as a locking device in co-operation with a clamping block 34. Spaced conveyer flights 14 are mounted on endless chains 13 and overlap slightly. The flights are staggered laterally and may also be vertically staggered. In a modification, Fig. 3, a pivoted plate 40 abuts the upper surface of the shaft 21 and prevents spillage of the material over the top of the shaft. In Fig. 4, the front of an inverted trough is supported on the shaft 21, and the lower edge 45 determines the depth of the material. A cross rod 47 supports the rear of the trough. The depth control device may be fixed after calibration so as to provide a constant predetermined discharge from the conveyer.
Patent GB-544009-A (GB)
Title: Improvements in a process and apparatus for coating paper
IPC: D21H23/00
Filed: 1940-09-20
Abstract: 544,009. Coating paper. DEHN, F. B. (Consolidated Water Power & Paper Co.). Sept. 20, 1940, No. 14397. [Class 96] Water is expressed mechanically from a web 5 as by a wet press 6, 7 the web 5 is then adjustably pressed against a heated, travelling surface, e.g. a Yankee dryer drum 9, by a roller 8 and lever-system 22, compacted by a roller 32, e.g. of layers of hard and soft rubber, and coated by a roll 49 with a mixture of high solids-content while moisture in the web is being vaporized, thus preventing penetration of coating material through the interstices in the web and so protecting the surface of the drum 9 from damage thereby. The coating mixture, e.g. of clay and adhesive is received from a reservoir at the nip between rolls 69, 75 and confined by dams 100 at each end, rolls 49, 55, 69, and 75 being adjustably spaced apart, supported on pivotted arms from beams 12, and pressed towards the drum 9 by a piston rod 78 &c. A smooth, substantially opaque paper may be produced with less than the usual amount of coating and with little or no calendering.
Patent GB-455797-A (GB)
Title: Improvements in or relating to cathode ray tubes for use in television and the like
IPC: H01J29/56
Filed: 1935-05-16
Abstract: 455,797. Cathode ray tubes. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and JESTY, L. C., c/o General Electric Co., Ltd., Wembley, Middlesex. May 16, 1935, No. 14421. [Class 39 (i)] Cathode - ray tube apparatus having electrostatic or magnetic focusing means comprises means for varying concurrently the potentials of at least two conductors along the path of the ray, or for varying concurrently the potential of at least one conductor and the current through at least one magnetic coil along that path, the potential of the anode being unaltered, whereby the size of the spot on the screen, being always a true focus, is changed substantially. In television receivers the size of the spot may thus be altered for transmissions of different numbers of lines. In the form shown an apertured diaphragm S acts as the effective source of a diverging beam of electrons which is concentrated by the lens-system A, B, C to a focus on the screen D. The lens comprises a long cylinder A, a short cylinder B and the dish-like anode C, the potential of which remains unaltered. To change the magnification of the lens the potential of A is altered, resulting in a change in the " refractive index" of the object space. In order to bring the focus back to the screen a concurrent change in the potential of B is necessary. Potentials and dimensions for this arrangement are given. The change in the potential of B may be replaced by a similar change in the current through a magnetic focusing coil.
Patent GB-145768-A (GB)
IPC: F02M23/03
Abstract: 145,768. Daimler-Motoren-Ges. June 17, 1918, [Convention date]. Void [Published under Sect. 91 of the Act]. Spray carburettors, particularly for use on air. craft engines, are provided with a supplementary air valve the opening of which is restricted by the throttle valve in low altitudes, but as the throttle valve is opened for high altitudes, beyond the low-altitude maximum position the supplementary air valve is released and permitted to open freely by suction. The casing b contains a shell a which encloses a rotatable throttle valve c with lateral ports d, d<1>. The lower end of the throttle valve is provided with triangular projections e, e<1> which are adapted to engage, at low altitudes, the upper edge of an automatic auxiliary air valve f which surrounds the choke tube k. The auxiliary air valve has notches g, g<1> into which the projections e, e<1> may enter when the throttle valve is adjusted for high altitudes beyond its maximum low altitude position. The auxiliary air valve is prevented from rotating by an arm on choke tube k engaging lugs on the interior of the valve.
Patent GB-119300-A (GB)
Title: Improvements in Dough Proving Apparatus.
Inventor: EMBREY LAURENCE
IPC: B65G21/18
Filed: 1917-10-09
Abstract: 119,300. Embrey, L. Oct. 9, 1917. Proving or raising appliances.-A dough-proving apparatus of the kind described in Specification 107,829 is provided with two or more endless conveyers having different lengths of track, instead of with one only as therein described, so that the dough pieces may be treated for longer or shorter times between alternate moulding or shaping operations. The conveyers are contained in a casing 1, and both are brought up out of the casing side by side so as to form looped portions 6, 7 for discharging the dough from the receptacles. Charging openings 8, 9 are provided. The track for the upper conveyer is the shorter, and consists of two portions, one the elevated or looped portion 6, and the other the horizontal run 4. The track for the lower conveyer consists of the elevated or looped portion 7 and two zigzag or spiral portions 5, the conveyer passing first around one and then across to and around the other as described in Specification 107,829. The pulleys for the conveyer chains are carried on vertical shafts, such as 21, 23, 25, supported in bearings carried on plates 30 passing across the casing. The pulleys are driven from the main shaft 36, by gearing 34, 35, shaft 33, pulley 38, guide-pulleys 40, 41, and chain wheels 42. Moulding-machines 10, 12, of the kind described in Specifications 126/14 and 11724/14, [both in Class 87 (ii), Moulding plastic &c. substances]. and shaping-machines 11, 13, are mounted on the top of the casing. Specification 108,034 also is referred to.
Patent GB-770671-A (GB)
Title: Improvements in and relating to jogging devices
IPC: B65H31/40
Filed: 1954-05-18
Abstract: 770,671. Motor-driving arrangements. GOODA, A. R. April 7, 1955 [May 18, 1954], No. 14600/54. Class 35. [Also in Group XVI] A knocking-up device comprises a frame 10, a table 11 for receiving sheets to be jogged and resiliently mounted in the frame for vibratory motion so that the table is inclined to the horizontal, stops 16, 17 on the table for retaining the sheets in position and a vibratory member operatively fixed to the table for movement therewith. As shown, the table 11 is supported from the frame 10 by springs 12 and a rubber bush 13 interposed between two brackets 14, 15, the bracket 15 being fixed to a further bracket 19 secured to the underside of the table. Secured to the bracket 19 is an electric motor 18 which is provided with a metal bar 20 fixed to the shaft 21 of the motor so that its centre of gravity is displaced from the axis of rotation of the shaft. Rotation of the shaft thus causes the table to vibrate, and the amplitude of the vibration may be adjusted by a screw 22 in the bar 20.
Patent GB-1374502-A (GB)
Title: Method of radio frequency sputter etching
IPC: H01J37/32
Filed: 1972-03-29
Abstract: 1374502 Sputter-etching RCA CORPORATION 29 March 1972 [5 April 1971] 14694/72 Heading B3V [Also in Divisions C3 C7 and H4] In a method of R.F. sputter etching a workpiece 28 from which there are dissociated elements or complexes which are reactive with an organic photoresist mask 30 defining the desired pattern to be produced on the workpiece surface, degradation of the organic mask 30 is reduced by locating an inert material near the workpieoe 28 to cause a quantity of the material to be back scattered to the mask 30. In the embodiment described, a colour encoding filter is formed on the surface of a television camera tube faceplate 16 by first coating the faceplate surface with a yellow filter layer 28 formed by depositing alternate layers of zinc sulphide and thorium fluoride. After covering the filter layer 28 with a masking layer 30 of a short oil alkyd resin in a sensitizer and placing it on a backing plate (32) (Fig. 4, not shown) of silicon dioxide, magnesium oxide, alumina or boro silicate glass, the exposed areas of the filter layer 28 are removed by bombardment with ions from an argon glow discharge. During sputter etching, material from the backing plate (32) is back scattered to the mask 30 reducing the degradation thereof by fluorine, sulphur or water dissociated from the filter layer 28. The mask 30 is removed by sputter etching in an oxygen discharge to leave parallel yellow strips (22), (Fig. 2, not shown). The exposed surface of the faceplate 16 and the yellow strips (22) are then coated with a cyan filter layer which is etched in a similar manner to form parallel strips (24) at 45 degrees to the underlying yellow strips (22). Reference is also made to a workpiece layer 28 of calcium fluoride.
Patent GB-1101163-A (GB)
Title: Simultaneous polymerization and alkylation of heterocyclic n-vinyl monomers
IPC: C08F8/20
Filed: 1965-04-07
Abstract: Heterocyclic N-vinyl monomers are simultaneously polymerized and alkylated by heating one mole of a heterocyclic N-vinyl monomer, or one mole of a mixture of two such monomers, or one mole of a mixture of monomers containing from 5 to 99% by weight of a heterocyclic N-vinyl monomer and from 1 to 95% by weight of a non-heterocyclic polymerizable mono-ethylenically unsaturated monomer with 0.05 to 12 moles of an a -olefin chosen from chlorofluoro-a -olefins and fluoro-a -olefins both containing 2 carbon atoms and an a -olefin containing at least 2 carbon atoms in an organic solvent common to all the above monomers and the said a -olefins in the presence of 0.025 to 0.30 mole of an organic peroxide catalyst per mole of the said a -olefin at a temperature ranging from 80 DEG  to 200 DEG  C. The invention also provides a copolymer of two different heterocyclic N-vinyl lactams, in which some or all of the rings contain one or more alkyl groups of at least two carbon atoms.  N-vinyl heterocyclic monomers exemplified include pyrrolidines, piperdines, caprolactams, oxazolidines, morpholinones and succinimides. Non-heterocyclic monomers exemplified are vinyl acetate, ethyl acrylate and dimethylaminoethyl methacrylate.
Patent GB-1095241-A (GB)
Title: Memory component
IPC: G11B17/03
Filed: 1966-04-04
Abstract: 1,095,241. Recording and playback. INTERNATIONAL BUSINESS MACHINES CORPORATION. April 4, 1966 [April 26, 1965], No. 14751/66. Heading G5R. A magnetic storage unit consists of a magnetic disc assembly 18 incorporating a central web section 23 positioned within a dust proof cartridge 14 and adapted to fit on the drive unit of a playback apparatus. When disengaged from the drive unit, movement between the disc and cartridge is prevented by a spring- loaded centre plunger 29 which forces the central web of the disc assembly into engagement with a raised flange 26 fitted to the side of the cartridge. When the cartridge is slid into an operative position the end flap 37 is lifted by an arm in the playback apparatus so that transducing arrangements may co-operate with the disc. The lifting operation also lifts the plunger assembly 35, 29, so that the disc is free to rotate. A drive chuck engages the aperture 21 in the central web section when the cartridge is in an operative position.
Patent GB-477677-A (GB)
Title: Improvements in or relating to printing presses
IPC: B41F3/20
Filed: 1937-05-28
Abstract: 477,677. Control of motors. KOLLNER, M. May 28, 1937, No. 14831. Convention date, June 13, 1936. [Class 38 (iii)] Travelling between predetermined limits; continuous reversals.-The automatic stoppage or reversal of the motor 9 driving a carriage 4 carrying the impression cylinder 6 in a flat forme printing press at the limits of its travel is controlled in dependence on the position of the lever 12 controlling the speed-regulating resistance 13 of the motor. The lever 12 is connected by a rod 14 and slotted lever 15 to a pulley 16 to which the ends of a Bowden wire 17 are attached. The guides 18 for the wire are secured to a casing 19 and to blocks 20, 21 secured in a guide rail 22. A slider 23, movable along the rail, is secured to the portion of the wire 17 between the blocks, and the position of the slider is thus dependent on the position of the lever 12 and hence on the speed of the motor. The rail 22 is pivoted to levers 26, 27, and when a roller 30 on the underside of the carriage 4 engages the slider 23, the slider and rail are depressed, and the rail pushes in the pin 28 of a switch 29 controlling the stoppage or reversal of the motor.