US2442608A - Exhaust tube arrangement in flat disc press electron discharge devices - Google Patents

Exhaust tube arrangement in flat disc press electron discharge devices Download PDF

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Publication number
US2442608A
US2442608A US480188A US48018843A US2442608A US 2442608 A US2442608 A US 2442608A US 480188 A US480188 A US 480188A US 48018843 A US48018843 A US 48018843A US 2442608 A US2442608 A US 2442608A
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US
United States
Prior art keywords
exhaust tube
thimble
header
electron discharge
discharge devices
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
US480188A
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English (en)
Inventor
Lemmens Hendricus Johannes
Jonker Johan Lodewijk Hendrik
Otto Louis Van Steenis
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.)
Hartford National Bank and Trust Co
Original Assignee
Hartford National Bank and Trust Co
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 Hartford National Bank and Trust Co filed Critical Hartford National Bank and Trust Co
Application granted granted Critical
Publication of US2442608A publication Critical patent/US2442608A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/40—Closing vessels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/38—Exhausting, degassing, filling, or cleaning vessels

Definitions

  • This invention relates to an electric discharge tube, particularly to the type of tube which is closed by a substantially flat or disc stem with an exhaust tube.
  • a discharge tube according to the invention which is closed by a substantially flat or disc stem comprising a flat header carrying the exhaust tube
  • the latter is shielded and protected by a tubular member such as a metal sleeve or cap, which is fastened to a metal thimble projecting from the outer side of the header.
  • the tubular sleeve or shield may be fastened to the projecting end of the thimble by clamping, soldering or welding, the weld being located on a portion of the thimble which projects to a greater distance from the tube than the supply conductors of the electrodes.
  • the thimble which carries the metal shield or cap made integral with a metal header by forming the central portion of the header into an outwardly projecting cylindrical boss, and with a glass or ceramic header by sealing or molding the thimble into the header simultaneously with the making of the stem.
  • the thimble extends through the header and acts as an electrostatic shield between the supply conductors and also between the portions of the conductors embedded in the glass or ceramic.
  • Figure 1 shows, by way of example, one form of construction of a portion in section of a glass stem of a discharge tube according to the invention
  • Figure 2 shows in section a portion of a metal stem.
  • I designates the glass exhaust tube of the tube sealed in a glass disc header 2 and in Fig. 2 a metal exhaust tube in a metal header 3.
  • the exhaust tube projects from the outer side of the header through a tubular metal thimble 4 which extends through the stem and projects from the outer side of the header.
  • This thimble has fastened to it a metal shielding sleeve or cap 5, which is preferably made in the form of a locating member, and fastened in some manner or other to the thimble 4, preferably being telescoped over the projecting end of the thimble and fastened to it at the points designated 6, for example by clamping, soldering, or, if the points 6 are sufliciently remote from the stem, by welding.
  • a metal shielding sleeve or cap 5 which is preferably made in the form of a locating member, and fastened in some manner or other to the thimble 4, preferably being telescoped over the projecting end of the thimble and fastened to it at the points designated 6, for example by clamping, soldering, or, if the points 6 are sufliciently remote from the stem, by welding.
  • a shielding sleeve or cap 1 is fastened in a similar manner to a thimble or tubular boss 8 which is integral with and projects from the metal header, and is preferably formed by stamping it out of the central portion of the header.
  • the tubular thimble 4 is concentric with and surrounds the exhaust tube l which communicates with the interior of the discharge tube.
  • An electric discharge tube having an envelope closed at one end with a fiat disc-shaped header, a round thimble extending outwardly from the surface of the header, an exhaust tube concentric with and extending through said thimble and communicating with said envelope,
  • An electric discharge tube having an envelope closed at one end by a stem comprising a flat header, a tubular thimble extending through and projecting outwardly from the header, an exhaust tube extending through said thimble, and V 3 jecting beyond the outer end of said exhaust tube to protect said exhaust tube.
  • a stem for an electric discharge tube comprising a glass disc header, a tubular metal thimble embedded in and extending through said header With its uter end projecting from the outer side of said header, an exhaust tube extending through said thimble, and a tubular metal shield secured to the projectingnwend oi aid thimble and surrounding and covering said exhaust tube.
  • a stem for an electric discharge tube comprising a flat header of glass; an exhaust tube projecting from the outer'sidaof said header, a
  • tubular metal thimble embedded in and p'roje'ot-"' ing from the outer side of "said-header and surrounding said exhaust tube, and a tubular metal hield telescoped over and securedIothe-Dlfljqcting end of said thimble and extending beyond the outer end of said exhaust tube.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
US480188A 1940-08-10 1943-03-23 Exhaust tube arrangement in flat disc press electron discharge devices Expired - Lifetime US2442608A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL224049X 1940-08-10

Publications (1)

Publication Number Publication Date
US2442608A true US2442608A (en) 1948-06-01

Family

ID=19779541

Family Applications (1)

Application Number Title Priority Date Filing Date
US480188A Expired - Lifetime US2442608A (en) 1940-08-10 1943-03-23 Exhaust tube arrangement in flat disc press electron discharge devices

Country Status (6)

Country Link
US (1) US2442608A (enrdf_load_stackoverflow)
BE (1) BE442424A (enrdf_load_stackoverflow)
CH (1) CH224049A (enrdf_load_stackoverflow)
FR (1) FR874589A (enrdf_load_stackoverflow)
GB (2) GB552753A (enrdf_load_stackoverflow)
NL (1) NL60403C (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2983078A (en) * 1957-07-12 1961-05-09 Westinghouse Electric Corp Method of sealing a vitreous conduit
US3198371A (en) * 1960-12-30 1965-08-03 Csf Sealing arrangement for electron discharge devices

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL60403C (enrdf_load_stackoverflow) * 1940-08-10

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB552753A (en) * 1940-08-10 1943-04-22 Philips Nv Improvements in or relating to the exhaust tube constructions in the envelopes of discharge tubes

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB552753A (en) * 1940-08-10 1943-04-22 Philips Nv Improvements in or relating to the exhaust tube constructions in the envelopes of discharge tubes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2983078A (en) * 1957-07-12 1961-05-09 Westinghouse Electric Corp Method of sealing a vitreous conduit
US3198371A (en) * 1960-12-30 1965-08-03 Csf Sealing arrangement for electron discharge devices

Also Published As

Publication number Publication date
NL60403C (enrdf_load_stackoverflow)
CH224049A (de) 1942-10-31
GB604785A (en) 1948-07-09
FR874589A (fr) 1942-08-11
BE442424A (enrdf_load_stackoverflow)
GB552753A (en) 1943-04-22

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