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
GB7925/38A
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.)
CEAG Concordia Elekrizitats AG
Original Assignee
CEAG Concordia Elekrizitats AG
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Filing date
Publication date
Application filed by CEAG Concordia Elekrizitats AGfiledCriticalCEAG Concordia Elekrizitats AG
Publication of GB512693ApublicationCriticalpatent/GB512693A/en
H01K1/18—Mountings or supports for the incandescent body
Landscapes
Resistance Heating
(AREA)
Abstract
512,693. Leading-in wires. CONCORDIA ELEKTRIZITATS-AKT.-GES. March 14, 1938, No. 7925. Convention date, April 21, 1937. Drawings to Specification. [Class 39 (ii)] In an electric incandescent lamp, more especially for use in mines, the leading-in wires projecting from the glass pinch and supporting a helical filament are of such short length that they cannot touch one another however far they may be bent. The filament is wound helically, and may be arranged in the form of a convex arc, its thickness being such that it is comparatively rigid so that sagging is avoided.
GB7925/38A1937-04-211938-03-14Improvements in electric incandescent lamps for use in mines
ExpiredGB512693A
(en)
Improvements in means for producing light comprising in combination an electric discharge lamp and an electric incandescent lamp whose filament is in series with the discharge path