US2096156A - Electric discharge tube - Google Patents

Electric discharge tube Download PDF

Info

Publication number
US2096156A
US2096156A US107135A US10713536A US2096156A US 2096156 A US2096156 A US 2096156A US 107135 A US107135 A US 107135A US 10713536 A US10713536 A US 10713536A US 2096156 A US2096156 A US 2096156A
Authority
US
United States
Prior art keywords
plate
discharge tube
electric discharge
pins
leads
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US107135A
Other languages
English (en)
Inventor
Breyer Felix
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefunken AG
Original Assignee
Telefunken AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Telefunken AG filed Critical Telefunken AG
Application granted granted Critical
Publication of US2096156A publication Critical patent/US2096156A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/32—Seals for leading-in conductors
    • H01J5/44—Annular seals disposed between the ends of the vessel

Definitions

  • This invention relates to the construction of discharge tubes particularly to the support for the electrode system and the arrangement of the electrode leads.
  • One known vacuum vessel consists of a glass bulb and a re-entrant stem welded thereto.
  • the stem is usually closed at its inner end upon the supporting bars and leads for the various electrodes of the system.
  • the prior art has developed a thimble-like discharge envelope whose open end is closed by a fiat cover or header.
  • the leads constructed correspondingly rigid, are used for supporting electrode elements and their ends, bent at right angle, are sealed between the connecting surfaces of the cover and the thimble-like part of the vessel.
  • the closely adjacent lead-in wires are apt to cause sealing and vacuum trouble, and the leakage resistances and capacities between leads are high. These tubes fail in high frequency operation, particularly in short wave work.
  • certain difficulties of assembling the electrode system appear which are not present in manufacturing tubes with the conventional press.
  • a cup-shaped envelope of insulating material such as ceramic or glass
  • an insulating flat press or plate and devices are provided for assembling and supporting the electrode system, comprising pins or pipe nipples cemented or cast in the plate.
  • the current leads for the individual electrodes are connected to said pins or nipples and are sealed between the edge of the plate and the rim of the cup-shaped portion of the envelope.
  • Figures 1a, 1b and 10 show three embodiments of a header or plate for supporting the electrode system and for closing the bulb, its material being any insulating substance, for instance glass or a ceramic material, and Figure 2 shows in perspective an envelope embodying this invention.
  • the plate has a circular disc and is provided with holes or borings a which extend only part way through the plate.
  • the holes may be either molded or drilled in the plate and may be so distributed over the face of the plate as to most advantageously support electrodes in the envelope upon short spuds or supporting rods cemented or fused in the holes.
  • Figure 1b shows pins b, which may be of conductive material or of insulating material such as ceramic, set in and cemented in the plate.
  • An alternative consists in casting pin-like projections in the plate.
  • the electrodes may be attached to these pins either by welding or by clamps comprising sleeve-like elements pushed over the pins and electrode side rod ends.
  • Figure 1c is shown another embodiment differing from the previous one in that hollow 10 tubes or nipples c are inserted in the plate in place of pins.
  • the supporting rods for the electrodes are fixed therein by welding or clamping.
  • FIG. 1 Current lead-in conductors for the electrodes are shown in Figure 2.
  • Base plate or header p of insulating material is shown with nipples and ins 0 attached thereto for mechanically supporting the electrodes.
  • the lead condutcors d for instance by soldering or welding.
  • the lead-in conductors are sealed into the envelope preferably by laying the conductors over the edge of the plate at spaced points.
  • Shell or housing 0, of insulating material, such as glass or ceramic with flange ,f at the lower end, is placed on the plate and the flange and the edge of the plate are fused together hermetically, sealing the conductors in place.
  • Sealing may be facilitated by coating the rim of the shell and the periphery of the plate with a fusing mass or flux before the two parts are pressed together and fused. If the plate and upper part of the vessel and its flange consist of glass, the joining of the two parts may be done by any of the usual press operations.
  • An electric discharge tube with an envelope comprising a cup-shaped member, and an insulating plate sealed to the rim. of said member provided on the inside with inwardly projecting pins embedded into the plate for supporting 55 the electrode system and electrode leads sealed between the edge of the plate'and the rim of said member.
  • An electric discharge tube comprising a cupshaped shell of insulating material, an insulating plate joined along its periphery to the rim of said, shell, supporting metal pins for electrodes attached to the inner surface of said plate, and a plurality of spaced lead-in conductors sealed gas tight in the junction between said shell and plate and electrically connected at their inner ends to separate pins.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
US107135A 1935-10-18 1936-10-23 Electric discharge tube Expired - Lifetime US2096156A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2096156X 1935-10-18

Publications (1)

Publication Number Publication Date
US2096156A true US2096156A (en) 1937-10-19

Family

ID=7984729

Family Applications (1)

Application Number Title Priority Date Filing Date
US107135A Expired - Lifetime US2096156A (en) 1935-10-18 1936-10-23 Electric discharge tube

Country Status (3)

Country Link
US (1) US2096156A (de)
AT (1) AT150116B (de)
FR (1) FR811846A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3037070A (en) * 1958-09-04 1962-05-29 Joseph Waldman & Sons Headers and method of making same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3037070A (en) * 1958-09-04 1962-05-29 Joseph Waldman & Sons Headers and method of making same

Also Published As

Publication number Publication date
AT150116B (de) 1937-07-10
FR811846A (fr) 1937-04-23

Similar Documents

Publication Publication Date Title
US2792271A (en) Method of making electric discharge device
US2722624A (en) Electron tube
US2030187A (en) Short wave tube
US2174375A (en) Glass-to-metal seal
US2174682A (en) Tube base and socket
US2740067A (en) Ceramic vacuum tube
US2680824A (en) Electric discharge device
US2177502A (en) Electrical device and method of fabricating the same
US2129849A (en) Electron discharge device
US2096156A (en) Electric discharge tube
US2509906A (en) Glass-to-metal seal
US3009012A (en) Header construction
US2486065A (en) Lead-in structure for vacuum tubes
US2472942A (en) Electron tube
US2859372A (en) Electron tube
US2802133A (en) Electron discharge device
US2910607A (en) Ceramic type electron tube
US2106394A (en) Metal tube lead-in bushing
US2527587A (en) Electron discharge device
US2456861A (en) Generator and cathode construction for electricity of ultra high frequency
US2416566A (en) Cathode
US2131923A (en) Electron tube
US2819421A (en) Electrode spacing adjustment
US2465370A (en) Ultra high frequency electron discharge device
US2141387A (en) Electron discharge device