US1715326A - Electrode for discharge tubes - Google Patents

Electrode for discharge tubes Download PDF

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Publication number
US1715326A
US1715326A US157699A US15769926A US1715326A US 1715326 A US1715326 A US 1715326A US 157699 A US157699 A US 157699A US 15769926 A US15769926 A US 15769926A US 1715326 A US1715326 A US 1715326A
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United States
Prior art keywords
electrode
tube
discharge tubes
tubes
opening
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Expired - Lifetime
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US157699A
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William F Hendry
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MANHATTAN ELECTRICAL SUPPLY CO
MANHATTAN ELECTRICAL SUPPLY COMPANY Inc
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MANHATTAN ELECTRICAL SUPPLY CO
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Priority to US157699A priority Critical patent/US1715326A/en
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Publication of US1715326A publication Critical patent/US1715326A/en
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Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/28—Non-electron-emitting electrodes; Screens
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0012—Constructional arrangements
    • H01J2893/0013—Sealed electrodes

Definitions

  • This invention relates to tubes having internal electrodes and relates more particularly to a method and means whereby large electrodes may be placed inside tubes through openings that are too small to pass a normal electrode.
  • the object of my invention is to so construct an electrode that it may bereduced in size and hence be inserted inside a tube envelope through an opening of smaller diameter than that of a normal electrode.
  • Figs. 1 to 6 of the drawing represent tubes having electrodes constructed according to the invention.
  • Figs. 1, 3 and 5 show the electrodes as they appear when they are'inserted through the bottle neck, while Figs. 2, 4 and 6 are showings of the electrodes when m gunted in the operative position inside the tu e.
  • Fig. 1 of the drawings shows a tube having a normally hemispherical electrode made of a plurality of pieces and the pieces all overlapped and adjusted to the same position so that the electrode may be inserted through the narrow neck of the tube, then expanded to its normal size and riveted in shape as shown in Fig. 2.
  • an electrode inside the tube having a normal operating form in the shape of a hollow cup too large to be insertedthrough' the opening in the tube, said electrode comprising a rotatable portion by virtue of which the size of the electrode may be reduced sufficiently to allow it to pass through the opening in the said tube.
  • An electrical discharge tube comprising a hollow hemispherical electrode made in a plurality of sections interleavably mounted on a common pivot'point and secured against relative movement.
  • An electrode for an electricaldischarge ,tube comprising a plurality of sections col lapsibly mounted on a common pivot whereby I V of hemispherical electrode forming elements movably hinged to a commonpoint whereby the said electrode may be reduced in size, and having means for maintaining the said plu- .rality of portions in afixed position relative.

Description

y ,1929. w. F. HENDRY ELECTRODE FOR DISCHARGE TUBES Filed Dec. 29, 1926 WILLIAM F, HEZNPRT EJ S-(LQL Mic/1f)? Patented May 28, 19 29.
UNITED srA'rss IPATENTOFFICE.
WILLIAM F. HENDRY, or ossrnrne, NEW YORK, ASSIGNOR T0 MANHATTAN ELECTRI- I cAL SUPPLY ooMPAnY, INC., A CORPORATION or MASSACHUSETTS.
ELECTRODE FOR DISCHARGE TUBES.
' Application filed December 29, 1926. Serial No. 157,699.
This invention relates to tubes having internal electrodes and relates more particularly to a method and means whereby large electrodes may be placed inside tubes through openings that are too small to pass a normal electrode.
The object of my invention is to so construct an electrode that it may bereduced in size and hence be inserted inside a tube envelope through an opening of smaller diameter than that of a normal electrode. I
-Certain types of discharge tubes, for example rectifiers, known to the art, are now provided with an electrode of a size so large that it is extremely difficult to construct a satisfactory tube cheaply and eficiently due to the difliculty of assembling the large electrode within the envelope. Certain of the tubes now in use have a narrow bottle neck with an enlarged body portion and it is to this type of tube which my invention more particularly applies.
The invention will be more readily understood by reference to the accompanying drawing and description thereof which follows:
Figs. 1 to 6 of the drawing represent tubes having electrodes constructed according to the invention. Figs. 1, 3 and 5 show the electrodes as they appear when they are'inserted through the bottle neck, while Figs. 2, 4 and 6 are showings of the electrodes when m gunted in the operative position inside the tu e.
Fig. 1 of the drawings shows a tube having a normally hemispherical electrode made of a plurality of pieces and the pieces all overlapped and adjusted to the same position so that the electrode may be inserted through the narrow neck of the tube, then expanded to its normal size and riveted in shape as shown in Fig. 2.
through the bottle neck into the envelope and, then be unrolled and riveted in its final shape.
It is in many cases a marked advantage to have a very large electrode inside a tube of small dimensions and now by an arrangement Y as illustrated above adischarge tube having a small neck opening in the envelope may easily be made with a large internal electrode. In tubes of the prior art-the size ofthe electrode has been limited practically by the sizeof the opening into the envelope. r
i I have illustrated three forms which my invention maytake but do not intend to be limited to the specific 'forms shown as other means of carrying outthe. invention will readily occur to one skilled in the art.
I desire to be limited only to the extent set forth in the appended claims.
What I claim is:
1. In an electrical discharge tube having a small opening through which a large electrode must be inserted in assembling the tube,
an electrode inside the tube having a normal operating form in the shape of a hollow cup too large to be insertedthrough' the opening in the tube, said electrode comprising a rotatable portion by virtue of which the size of the electrode may be reduced sufficiently to allow it to pass through the opening in the said tube.
2. An electrical discharge tube comprising a hollow hemispherical electrode made in a plurality of sections interleavably mounted on a common pivot'point and secured against relative movement.
3. An electrode for an electricaldischarge ,tube, comprising a plurality of sections col lapsibly mounted on a common pivot whereby I V of hemispherical electrode forming elements movably hinged to a commonpoint whereby the said electrode may be reduced in size, and having means for maintaining the said plu- .rality of portions in afixed position relative.
to .each other.
In testimony whereof, I have signed my name to this specification, this 27th day of December, 1926.
WILLIAM F. HENDRY.
US157699A 1926-12-29 1926-12-29 Electrode for discharge tubes Expired - Lifetime US1715326A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2568552A (en) * 1949-04-26 1951-09-18 Machlett Lab Inc High-voltage electronic rectifier tube of the incandescent filament type
US2580021A (en) * 1947-02-17 1951-12-25 Hart Russell Method and means for generating high electrical potential

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2580021A (en) * 1947-02-17 1951-12-25 Hart Russell Method and means for generating high electrical potential
US2568552A (en) * 1949-04-26 1951-09-18 Machlett Lab Inc High-voltage electronic rectifier tube of the incandescent filament type

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