US1839323A - Incandescent wire arrangement in audions - Google Patents

Incandescent wire arrangement in audions Download PDF

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Publication number
US1839323A
US1839323A US341143A US34114329A US1839323A US 1839323 A US1839323 A US 1839323A US 341143 A US341143 A US 341143A US 34114329 A US34114329 A US 34114329A US 1839323 A US1839323 A US 1839323A
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filaments
incandescent
arrangement
wires
audions
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US341143A
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English (en)
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Loewe Siegmund
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Individual
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/15—Cathodes heated directly by an electric current

Definitions

  • Fig. .6 shows one of the known arrangements consisting of an incandescent wire 1 whose leads 2 and 3 are on the same side of the electrode sys-. temwhilst on the other side it is borne and strained inthe middle by a support 4, so that two filament stretches 1 and 1" run inside the electrode system acute-angl'ed to one another.
  • V y p The invention consists in restricting in a possibilities of movement and expansion towards one another 1n such a manner that the either altogether prevented or considerably reduced in their-amplitude or may occur only in such direction thatthey do not cause disturbances.
  • My invention may be best understood with reference to the accompanying drawings.
  • Fig. 1 shows a cross-sectionby an electron discharge device with the incandescent wire arrangement according to my invention.
  • Fig. 2 shows the way of manufacturing the incandescent wire arrangement of Fig. 1
  • Fig. 3 shows a modification of the incandes cent wire arrangement, of 1 in a larger scale, the manufacturing of which is illustrated in Fig. 4.
  • V p
  • FIG. 6 shows as above mentioned the known arrangement having disadvantages to be avoided according tov my invention, particularly to the arrangement of Fig. Fig. 7 is a modification of m device in side elevation.
  • Fig. 8 shows a modification of the filaments inside of the electrode system.
  • Figs. 911 relate to incandescent wire: ar-
  • Fig. 1 shows an especially simple embodiment of an arrangement of two incandescent wires where the possibilities of oscillation are limited according to the invention.
  • two filaments 1 and 2 need only be laid one above the other in'such a manner that they cross, say, at the central point 5.
  • the supporting wires 3 and 4. are arranged in the same directions and that, in order to 'efiect the arrangement accordingjito Fig. 1, one of these supporting wires, for instance wire 4, is turned by 360' or appropriately somewhat more.
  • both supporting wires 3 and 4. lie at the different sides of the parallel filaments 1 and 2 and that one of the supporting wires is turned by fully 180 so that the wires are interlaced.
  • the electron discharge device oflFig. 1 is in 6., the plate 7,.the bulb 8, the socket 9. 1
  • Fig. 8 shows such an arrangement consisting of parallel level anode plates 10 and 11 and grids 12 and 13 where'the common plane of the filaments 1 and 2 is vertical to the anode planes.
  • Fig. 3 appears to be the simplest for-the mutual stifl'eni'ng arrangement of two filaments. It may happen, however, that such arrangements have electrical drawbacks of another nature. In many cases an unfavourable influence might be exerted on the course of the valve characteristic if according to Figs. 1 and 3 respectively the central point of the filaments, constructed as a junction, would have a larger distance from the other elec trodes than the-other parts. If that is to be avoided, a clasp 14 may in the manner shown in Fig. 5 be laid round the middle portion of filaments 1 and 2 in order thus to connect the same. 3
  • Figs; 1 and 5 relate to leads of the filament voltage-in which the" full difference of volt age exists between the right ends of the filament and the left ends so thatthe middle point 5 according to the invention lies simultaneously for the two filaments at the same potentialeven i-f the filament voltage switched on is'not constant, but an alternating voltage; j If,however,inth'e manner shown in Fig. 6", the full filament voltage lies between neighbouring ends of the filaments, a con ductive connection of the middle points of the" filaments would lead to disturbances of the desired course of the current.
  • Figs. 1 and 3 are interlaced, or jointed by theclasp-lt ofFi'g. 5.
  • the fmthersubject of the invention relates to filament arrangements which even in the case of electrodes of any shape not only neutralize such vibrations, but fully avoid the same.
  • incandescent wires for this purpose more than two incandescent wires are used, for instance three incandescent wires interlacing in similar man ner as the two filaments of Figs. 1, 3, 5, 8, 7. In that case there is in no direction as essential possibility of the filament bending through and therefore of a disturbing oscillation.
  • Figs. 9 and 10 illustrate an exemplary embodiment of the further subject of the invention.
  • three filaments 16, 17,18 are strained; inaparallel and clamped together by a clasp 19 in order that they may not deflect'sidewise.
  • Fig. 10 the three incandescent wires 16, 1'? and 1-8 meet at a junction 5.
  • Fig. ll' shows a cross-section of a filament arrangement according to-Fig. '9- or 10 with cylindrical grid 22 and anode 23.
  • An arrangement, moveover, where. only a small number (say 2-) of filaments are-used, may be given the bending stabilityof an arrangement with a larger number ofincandescent wires by using wires with non-circularcross-section in order that the moment of inertia of the wire cross-section is largest in the direction in which a'certainpossibility of defiection'still exists.
  • Method for manufacturing incandescent cathode arrangements in an electron discharge device using three filaments hav ing a common crossing point which consists in arranging the single filaments in parallel, in connecting the corresponding ends of said filaments by means of metallic conductors, and in turning one of said metallic conducments, in supplying each polygon with a leading-in wire for the heating current.
  • an incandescent cathode arrangement consisting of several filaments having a commoncross-' ing point, of regular polygons ,of conductive material at which the ends of said filaments are fastened, of leading-in wires of said cathode arrangements attached at said regu V I lar polygons, of a grid, of an anode, and of leading wires of said electrodes.
  • Method for manufacturing incandescent cathode arrangements in an electron discharge device using more than two filaments having a common crossing point which consists in arranging the single filaments in parallel, in fastening the ends of said filaments in the corners of regular polygons manufactured of conductive material, and in turning one of said polygons in order to produce a mechanic crossing of said filaments.
  • Method for manufacturing incandescent cathode arrangements in an electron dis charge device using three filaments having a common crossing point which consists in arranging the single filaments in parallel, in fastening the ends of said filaments in the corners of regular triangles of Wire, and in turning one of said triangles in order to produce a mechanic crossing of said filaments.
  • Method for manufacturing incandes cent cathode arrangements in an electron discharge device using more than two filaments 7 having a common crossing point which consists in arranging the single filaments in parallel, in fastening the ends of said filaments in the corners of regular polygons manufactured of conductive material, and in turning one of said polygons in order to produce a mechanic crossing of said fila-

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  • Electron Sources, Ion Sources (AREA)
  • Solid Thermionic Cathode (AREA)
US341143A 1928-02-22 1929-02-19 Incandescent wire arrangement in audions Expired - Lifetime US1839323A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE306513X 1928-02-22

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US1839323A true US1839323A (en) 1932-01-05

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US (1) US1839323A (enrdf_load_html_response)
BE (1) BE358360A (enrdf_load_html_response)
FR (1) FR670129A (enrdf_load_html_response)
GB (1) GB306513A (enrdf_load_html_response)
NL (1) NL29677C (enrdf_load_html_response)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2734144A (en) * 1956-02-07 hoover

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2734144A (en) * 1956-02-07 hoover

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GB306513A (en) 1930-06-23
BE358360A (enrdf_load_html_response)
NL29677C (enrdf_load_html_response)
FR670129A (fr) 1929-11-25

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