GB926387A - Indicator tube - Google Patents

Indicator tube

Info

Publication number
GB926387A
GB926387A GB31733/59A GB3173359A GB926387A GB 926387 A GB926387 A GB 926387A GB 31733/59 A GB31733/59 A GB 31733/59A GB 3173359 A GB3173359 A GB 3173359A GB 926387 A GB926387 A GB 926387A
Authority
GB
United Kingdom
Prior art keywords
mercury
tube
cathodes
gas
mms
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
Application number
GB31733/59A
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.)
Unisys Corp
Original Assignee
Burroughs Corp
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 Burroughs Corp filed Critical Burroughs Corp
Publication of GB926387A publication Critical patent/GB926387A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/38—Cold-cathode tubes
    • H01J17/48—Cold-cathode tubes with more than one cathode or anode, e.g. sequence-discharge tube, counting tube, dekatron
    • H01J17/49—Display panels, e.g. with crossed electrodes, e.g. making use of direct current
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0069—Tubes for displaying characters

Landscapes

  • Gas-Filled Discharge Tubes (AREA)
  • Discharge Lamp (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

926,387. Glow-discharge lamps. BURROUGHS CORPORATION. Sept. 17, 1959 [Sept. 22, 1958], No. 31733/59. Drawings to Specification. Class 39 (1). A glow-discharge gas-filled indicator tube, comprises a filling of an ionizable gas and mercury, wherein the mercury reduces the energy of the ions and so sharply reduces the amount of spluttering from the cathode. In one form the device comprises a stack of cathodes of stainless steel, molybdenum, aluminium or " Nichrome " (Registered Trade Mark), shaped in the form of numerals mounted on two insulating supports. During assembly a small glass vial containing mercury and a heating filament is introduced into the device which is then evacuated, filled with a rare gas such as Ne or other ionizable gas at a pressure between 50-100 mms. of Hg, preferably 70 mms. of Hg, and the device is sealed. The tube is then partially aged, the filament is heated, thus shattering the glass vial, and liberating mercury vapour into the lamp; the aging of the tube is then completed. Alternatively, after sealing, the mercury may be liberated immediately and the tube is then aged completely. Any other method of introducing the mercury may be employed, i.e. a side tube may be used. The stack of cathodes are contained in a cup-shaped anode, which rests on a mica disc, and which has two diametrically disposed slots in its wall to enable leads to reach the cathodes, the anode thus also acting as a shield.
GB31733/59A 1958-09-22 1959-09-17 Indicator tube Expired GB926387A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US762406A US2991387A (en) 1958-09-22 1958-09-22 Indicator tube

Publications (1)

Publication Number Publication Date
GB926387A true GB926387A (en) 1963-05-15

Family

ID=25064948

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31733/59A Expired GB926387A (en) 1958-09-22 1959-09-17 Indicator tube

Country Status (2)

Country Link
US (1) US2991387A (en)
GB (1) GB926387A (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3260882A (en) * 1962-01-31 1966-07-12 Philips Corp Glow discharge indicator tube
DE1184417B (en) * 1962-01-31 1964-12-31 Philips Nv Glow discharge indicator tube showing numerals
US3250938A (en) * 1962-01-31 1966-05-10 Philips Corp Biquinary glow-discharge digit indicator tube
US3168667A (en) * 1962-05-31 1965-02-02 Burroughs Corp Indicator tube
NL6615123A (en) * 1966-10-26 1968-04-29
US3580654A (en) * 1968-10-02 1971-05-25 Burroughs Corp Method of making display devices
US3673652A (en) * 1970-05-26 1972-07-04 Rca Corp Filamentary display devices
US4182971A (en) * 1978-07-10 1980-01-08 Gte Sylvania Incorporated Mercury-containing glass-capsule dispenser for discharge lamps
US4335326A (en) * 1980-04-23 1982-06-15 Gte Products Corporation Mercury dispenser for discharge lamps
US4754193A (en) * 1985-11-08 1988-06-28 Gte Products Corporation Mercury dispenser for arc discharge lamps
US4823050A (en) * 1986-09-18 1989-04-18 Gte Products Corporation Metal-halide arc tube and lamp having improved uniformity of azimuthal luminous intensity
US4870323A (en) * 1988-07-13 1989-09-26 Gte Products Corporation Method of dispensing mercury into an arc discharge lamp
US5394056A (en) * 1993-04-07 1995-02-28 General Electric Company Opening of capsule inside sealed lamp
US20070216308A1 (en) * 2006-03-16 2007-09-20 Kiermaier Ludwig P Lamp electrode and method for delivering mercury
US7625258B2 (en) * 2006-03-16 2009-12-01 E.G.L. Company Inc. Lamp electrode and method for delivering mercury

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2002775A (en) * 1930-06-21 1935-05-28 Jr Andrew F Henninger Cathode glowlamp
US2098519A (en) * 1930-08-23 1937-11-09 Sirian Lamp Co Display device
GB410581A (en) * 1933-02-25 1934-05-24 Siemens Electric Lamps & Suppl Improvements relating to electric cathode glow devices
US2080925A (en) * 1934-04-09 1937-05-18 Gen Electric Co Ltd Electric discharge device
US2142106A (en) * 1934-05-09 1939-01-03 Hans P Boswau Signaling system and glow lamps therefor
US2322421A (en) * 1938-12-22 1943-06-22 Sylvania Electric Prod Electric discharge lamp
US2313788A (en) * 1941-11-08 1943-03-16 Sylvania Electric Prod Lamp expaust method
US2491874A (en) * 1943-12-20 1949-12-20 Ets Claude Paz & Silva Manufacture of mercury-containing, gas-filled electric discharge apparatus
US2594357A (en) * 1947-03-03 1952-04-29 Mega Corp Electronic animated advertising sign system
US2783408A (en) * 1953-04-01 1957-02-26 Ericsson Telephones Ltd Electric discharge tubes
US2833949A (en) * 1955-12-13 1958-05-06 Burroughs Corp Glow indicating tube

Also Published As

Publication number Publication date
US2991387A (en) 1961-07-04

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