GB348670A - Fire-damp proof electric incandescent lamp - Google Patents

Fire-damp proof electric incandescent lamp

Info

Publication number
GB348670A
GB348670A GB38504/29A GB3850429A GB348670A GB 348670 A GB348670 A GB 348670A GB 38504/29 A GB38504/29 A GB 38504/29A GB 3850429 A GB3850429 A GB 3850429A GB 348670 A GB348670 A GB 348670A
Authority
GB
United Kingdom
Prior art keywords
gas
lamp
fire
globes
consist
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
GB38504/29A
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 Schuckertwerke AG
Siemens AG
Original Assignee
Siemens Schuckertwerke 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 Schuckertwerke AG, Siemens AG filed Critical Siemens Schuckertwerke AG
Priority to GB38504/29A priority Critical patent/GB348670A/en
Publication of GB348670A publication Critical patent/GB348670A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H01K1/34—Double wall vessels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps

Landscapes

  • Glass Compositions (AREA)

Abstract

348,670. Electric incandescent lamps. JACKSON, L. MELLERSH-, 28, Southampton Buildings, L o n d o n.- (Siemens Schuckertwerke Akt.-Ges. ; Siemensstadt, Berlin.) Dec. 16, 1929, No. 38504. [Class 39 (ii).] In a lamp for use in a firedamp environment, having the space between concentric globes 1, 3 filled with a gas, the connection between the globes is easily breakable at one or more points to ensure that, upon breakage of the lamp, the gas will enter the inner bulb to extinguish the filament before the bulb is destroyed. The connection may consist of a glass tube 5 which is more easily destroyed than the outer globe. Leading-in wires 6, 7 are weakened at certain points so that upon fracture they will break the filament circuit. The gas may consist of oxygen, or air at high pressure, or vapour of carbon tetrachloride. Reference has been directed by the Comptroller to Specifications 189,847 and 305,790, [both in Class 39 (ii), Electric lamps, Incandescent].
GB38504/29A 1929-12-16 1929-12-16 Fire-damp proof electric incandescent lamp Expired GB348670A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB38504/29A GB348670A (en) 1929-12-16 1929-12-16 Fire-damp proof electric incandescent lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB38504/29A GB348670A (en) 1929-12-16 1929-12-16 Fire-damp proof electric incandescent lamp

Publications (1)

Publication Number Publication Date
GB348670A true GB348670A (en) 1931-05-16

Family

ID=10403900

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38504/29A Expired GB348670A (en) 1929-12-16 1929-12-16 Fire-damp proof electric incandescent lamp

Country Status (1)

Country Link
GB (1) GB348670A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0168017A2 (en) * 1984-07-09 1986-01-15 GTE Products Corporation Replacement lamp with means for spacing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0168017A2 (en) * 1984-07-09 1986-01-15 GTE Products Corporation Replacement lamp with means for spacing
EP0168017A3 (en) * 1984-07-09 1987-12-02 Gte Products Corporation Replacement lamp with means for spacing

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