GB392509A - Improvements in or relating to metallic vapour arc lamps adapted for operation on alternating current - Google Patents

Improvements in or relating to metallic vapour arc lamps adapted for operation on alternating current

Info

Publication number
GB392509A
GB392509A GB22566/31A GB2256631A GB392509A GB 392509 A GB392509 A GB 392509A GB 22566/31 A GB22566/31 A GB 22566/31A GB 2256631 A GB2256631 A GB 2256631A GB 392509 A GB392509 A GB 392509A
Authority
GB
United Kingdom
Prior art keywords
lamp
electrodes
spirals
switch
incandescent
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
GB22566/31A
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens 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 Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Publication of GB392509A publication Critical patent/GB392509A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C29/00—Finishing or dressing, of textile fabrics, not provided for in the preceding groups
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/24—Means for obtaining or maintaining the desired pressure within the vessel
    • H01J61/28—Means for producing, introducing, or replenishing gas or vapour during operation of the lamp
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
    • H01J61/822—High-pressure mercury lamps

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

392,509. Discharge lamps. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. Aug. 10, 1931, No. 22566. Convention date, Aug. 9, 1930. Void [Published under Sect. 91 of the Acts]. [Class 39 (i).] A metallic-vapour arc lamp, working on alternating current, is provided with electrodes 4, 5 of substantial mass and of refractory metal, e.g. tungsten, tantalum, molybdenum or niobium, between which the discharge passes when the. lamp is working under high pressure. For starting, when the lamp is in the lowpressure condition, incandescent electrodes, which may be in the form of spirals 2, 3, 3a of tungsten wire, are provided. The construction shown on the left side of the Figure is suitable for the employment of difficultly vaporizable metals solid at ordinary temperatures, e.g. cadmium or zinc, and comprises a metal case 12, with a condensed deposit 23 of the vaporizable metal, surrounding a pair of spirals 2, 3, which at starting can be raised to incandescence by current from the mains 24, 25. The part of the lamp surrounding the incandescent electrodes is provided with a heat-insulating layer 15 surrounded by a metallic shell 16. The construction shown on the right side of the Figure is suitable for the employment of mercury as the vaporizable metal, and comprises an annular shoulder 18 for the reception of the mercury. To start the lamp, the switch 27 is first closed in order to supply heating current to the spirals at each end of the tube ; the switch is then opened, whereupon an arc passes between the incandescent electrodes and subsequently jumps over to the main electrodes 4, 5, whereupon the incandescent electrodes become part of the heating resistance of the lamp, the two spirals 2, 3 in the left-hand construction being placed in parallel by closing the switch 32.
GB22566/31A 1930-08-09 1931-08-10 Improvements in or relating to metallic vapour arc lamps adapted for operation on alternating current Expired GB392509A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE392509X 1930-08-09

Publications (1)

Publication Number Publication Date
GB392509A true GB392509A (en) 1933-05-18

Family

ID=6386087

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22566/31A Expired GB392509A (en) 1930-08-09 1931-08-10 Improvements in or relating to metallic vapour arc lamps adapted for operation on alternating current

Country Status (2)

Country Link
FR (2) FR392509A (en)
GB (1) GB392509A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2692348A (en) * 1951-06-19 1954-10-19 Westinghouse Electric Corp Discharge device and electrode

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE754219C (en) * 1938-04-24 1954-03-15 Quarzlampen G M B H High-pressure metal vapor lamp, in particular high-pressure mercury lamp, with fixed, non-activated heating electrodes
DE875687C (en) * 1938-10-05 1953-05-04 Electricitaets Ges Sanitas M B Arrangement for operating a high-pressure mercury vapor lamp with a basic gas filling, non-activated incandescent cathodes heated by the discharge and an elongated arc

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2692348A (en) * 1951-06-19 1954-10-19 Westinghouse Electric Corp Discharge device and electrode

Also Published As

Publication number Publication date
FR722092A (en) 1932-03-11
FR392509A (en) 1908-11-28

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