US2449374A - Electric discharge tube base - Google Patents

Electric discharge tube base Download PDF

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Publication number
US2449374A
US2449374A US684088A US68408846A US2449374A US 2449374 A US2449374 A US 2449374A US 684088 A US684088 A US 684088A US 68408846 A US68408846 A US 68408846A US 2449374 A US2449374 A US 2449374A
Authority
US
United States
Prior art keywords
tube
holder
base
lug
electric discharge
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
US684088A
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English (en)
Inventor
Fennema Pieter Harm
Kronouer Johan George
Prakke Frits
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 US2449374A publication Critical patent/US2449374A/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
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/50—Means forming part of the tube or lamps for the purpose of providing electrical connection to it
    • H01J5/54—Means forming part of the tube or lamps for the purpose of providing electrical connection to it supported by a separate part, e.g. base

Definitions

  • connection between these pins and the electrodes within the tube may be brought about in highly different ways dependently on the construction of the tube; ifv the tube is provided with a cap, these pins are inserted in the bottom of 4the cap and Within the latter they are secured to conductors which are sealed into the wall of the tube and which, in the interior of the tube, are connected to the electrodes.
  • Use may be made of tubes Without caps, for example of tube constructions wherein the tube is closed by a flat base consisting of glass or metal, and wherein the pins may be pressed or sealed as such into the base but may also be connected in some way or other to conductors of smaller diameter; this connection may be established in this case in the base of the tube.
  • the contact members of the tube Upon inserting the tube in the holder, the contact members of the tube must be introduced into holes provided in the holder and care must be taken to ensure that each contact member comes into contact with the corresponding spring in the holder, or in other Words false insertion of the tube in the holder must be impossible. Moreover, it must be impossible for the tube, after being inserted in the holder, to fall out of the latter when tube and holder are being handled,
  • lugs may be provided on the tube or on the cap; when inserting .the tube inthe holder, this lug snaps into a hole of the holder, all this in such manner that both correct insertion and iixation of the tube in the holder are ensured.
  • Such a lug may have different shapes; it may, for example, be formed by ⁇ a small projection on the side of the cap of the tube; it may, however, also be formed by a small tube or rod and be fixed, parallel to the pins, in the cap or in the base of the tube.
  • the latter exhibits at its lower end a groove which comes into contact with a spring in the tube holder, whilst, moreover, there may be provided a particular projecting member which ensures that only one position of ⁇ the tube with respect to the holder is possible.
  • a finding lug as described may be fixed in different ways. ⁇ If the tube is provided with a cap of insulating moulded material, the finding lug may be made of the same material and may be pressed simultaneously with the cap; this may also be done if the iinding lug consists of metal.
  • Another form of construction is found in tubes having a flat base of glass.
  • the finding lug forms part of a screening member provided on the outside of the wall of the tube.
  • This construction cannot always be used and particularly not with tubes havingkvery small dimensions since in this case the screening member can no longer be provided without the leakage paths between this member and the supply conductors becoming too short.
  • the use of this well-known form of construction in tubes for short and ultra short Waves entails grave diniculties.
  • a discharge tube according to the invention wherein the contact members serving for the supply of current to the electrodes have, outside the tube, the shape of pins, comprises a tubeshaped member which acts as a finding lug and whose end remote from the tube is secured to one of the pins.
  • the pins ⁇ v may beV arranged, for example, in a circle aroundxra central pin to which the 'finding lug may'be secured, for example, by welding.
  • the fixation is very solid, so that there is no risk of the finding lug breaking off when the tube is being inserted in the holder, ⁇ -Whi1'st, moreover, this xation is very simple.
  • the finding lug is preferably held fast at its end 'near the tube by an additional support. AThis support depends on the construction of the tube to which the invention is applied. If, for example, the tube is closed by a flat base of glass, the nding lug is supported at this end near thetubebyaproje tion of this base.
  • the invention may be advantageously applied to those tubes wherein the contact members are arranged in a foircl'e Iaround a central -pin and the finding 'lug is ⁇ Weliledto this pin.
  • the connection'between this -'pin and the ndin'g'lug v may also 'be established in any other member, for example, ⁇ by soldering.
  • An electric'discharge tube base comprising a'wallportion of insulating material, a plurality oflelec'trical contact members secured to and ex- "t'ending through said Wall'portion, a pin member Ihaving a Vportion thereof secured within and extending 'from said Wall portion, and a .tubular Contact locating member having one end portion abutting said wall portion and surrounding said pin membensaid pin member being secured to saidtubular member at ithe portionthe'reof remote from said Wall portion'.
  • An electric discharge tube base comprising a wall portion of insulating material, a plurality Iof electrical contact members secured to and ex tending through said wall portion and mounted Vabout a central portion thereof, a pin member 'having a portion thereof secured Within and extending from said Wall portion at said central portion, and a tubular contact locating member surrounding said pin member and having one end thereof abutting said wall portion and the other end thereof secured .to said pin member.
  • Anelectric discharge tube base comprising a glass disc-shaped Wall portion, a plurality of electrical contact members secured to and extending through said Wall portion and circularly mounted about a central portion'fthereof, .alpin member having a Iportion thereof ksecured Within and extending .fromf-said wall portion centrally with respect to said contact members, fand a tubular contact locating member surrounding said pin member and having one end thereof abutting said Wall portion'and having theo-ther end thereof secured to saidpin member.
  • ⁇ An electric discharge ⁇ tube base comprising sa. glass disc-shaped wall portion centrally provided with a recess, a plurality of electrical contact members secured to and extending throughsaid Wall portion and circularly mounted/'aboutrsaid central recess, a pin 'member having la portion thereof secured Within and extending from'said yWall portion centrally with respecttosaid Contact members, and a 4tubular contact locating member surrounding said pin'member and havingonee'nd thereof abutting said Wall portion '.Within ⁇ .said Vcentral recess ⁇ and having the otherend thereof secured Ato said pin member.

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US684088A 1943-07-23 1946-07-16 Electric discharge tube base Expired - Lifetime US2449374A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL248330X 1943-07-23

Publications (1)

Publication Number Publication Date
US2449374A true US2449374A (en) 1948-09-14

Family

ID=19780945

Family Applications (1)

Application Number Title Priority Date Filing Date
US684088A Expired - Lifetime US2449374A (en) 1943-07-23 1946-07-16 Electric discharge tube base

Country Status (4)

Country Link
US (1) US2449374A (en(2012))
BE (1) BE456890A (en(2012))
CH (1) CH248330A (en(2012))
FR (1) FR906875A (en(2012))

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150188248A1 (en) * 2012-06-25 2015-07-02 Wago Verwaltungsgesellschaft Mbh Pin contact element and electronics housing

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2667528A (en) * 1951-11-21 1954-01-26 Columbia Broadcasting Syst Inc Electronic tube
US3051864A (en) * 1959-02-24 1962-08-28 Rca Corp Self-indexing electron tubes and sockets

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2265632A (en) * 1940-08-02 1941-12-09 Bruce A Coffin Electron tube base
US2337401A (en) * 1941-05-09 1943-12-21 Sylvania Electric Prod Base construction for electron tubes

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2265632A (en) * 1940-08-02 1941-12-09 Bruce A Coffin Electron tube base
US2337401A (en) * 1941-05-09 1943-12-21 Sylvania Electric Prod Base construction for electron tubes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150188248A1 (en) * 2012-06-25 2015-07-02 Wago Verwaltungsgesellschaft Mbh Pin contact element and electronics housing
US9373904B2 (en) * 2012-06-25 2016-06-21 Wago Verwaltungsgesellschaft Mbh Pin contact element and electronics housing

Also Published As

Publication number Publication date
CH248330A (de) 1947-04-30
BE456890A (en(2012))
FR906875A (fr) 1946-02-22

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