GB456760A - Improvements relating to incandescent filament electric lamps - Google Patents

Improvements relating to incandescent filament electric lamps

Info

Publication number
GB456760A
GB456760A GB1416335A GB1416335A GB456760A GB 456760 A GB456760 A GB 456760A GB 1416335 A GB1416335 A GB 1416335A GB 1416335 A GB1416335 A GB 1416335A GB 456760 A GB456760 A GB 456760A
Authority
GB
United Kingdom
Prior art keywords
electric lamps
improvements relating
incandescent filament
filament electric
helix
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
GB1416335A
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 Electric Lamps and Supplies Ltd
Original Assignee
Siemens Electric Lamps and Supplies Ltd
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 Electric Lamps and Supplies Ltd filed Critical Siemens Electric Lamps and Supplies Ltd
Priority to GB1416335A priority Critical patent/GB456760A/en
Publication of GB456760A publication Critical patent/GB456760A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/02—Incandescent bodies
    • H01K1/14—Incandescent bodies characterised by the shape

Landscapes

  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

456,760. Electric incandescent lamp filaments. SIEMENS ELECTRIC LAMPS & SUPPLIES, Ltd., Caxton House, Tothill Street, Westminster, and ALDINGTON, J. N., c/o Siemens Electric Lamps & Supplies, Ltd., Dock Road, Preston, Lancashire. May 14, 1935, No. 14163. [Class 39 (ii)] The filament of an electric incandescent lamp is wound in the form of a helix of the third order in which the internal diameter of each of the three successively formed helices is equal to or approximately equal to the external diameter of the filament or helix of the immediately lower order of which it is formed.
GB1416335A 1935-05-14 1935-05-14 Improvements relating to incandescent filament electric lamps Expired GB456760A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1416335A GB456760A (en) 1935-05-14 1935-05-14 Improvements relating to incandescent filament electric lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1416335A GB456760A (en) 1935-05-14 1935-05-14 Improvements relating to incandescent filament electric lamps

Publications (1)

Publication Number Publication Date
GB456760A true GB456760A (en) 1936-11-16

Family

ID=10036138

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1416335A Expired GB456760A (en) 1935-05-14 1935-05-14 Improvements relating to incandescent filament electric lamps

Country Status (1)

Country Link
GB (1) GB456760A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2473786A1 (en) * 1979-12-19 1981-07-17 Gen Electric TRIPLE WINDING FILAMENT FOR INCANDESCENT LAMP
US6803706B2 (en) 2001-03-06 2004-10-12 Koninklijke Philips Electronics N.V. Lamp with double layer coiled-coil filament

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2473786A1 (en) * 1979-12-19 1981-07-17 Gen Electric TRIPLE WINDING FILAMENT FOR INCANDESCENT LAMP
US6803706B2 (en) 2001-03-06 2004-10-12 Koninklijke Philips Electronics N.V. Lamp with double layer coiled-coil filament

Similar Documents

Publication Publication Date Title
GB567220A (en) Improvements relating to electric devices capable of transforming electric energy into radiant energy
GB456760A (en) Improvements relating to incandescent filament electric lamps
GB1524582A (en) Incandescent lamp
GB443713A (en) Improvements in electric incandescent lamps
GB948859A (en) Improvements in and relating to incandescent lamps
GB471551A (en) Improvements in or relating to the manufacture of electric incandescent lamps
GB431212A (en) Improvements in electric incandescent lamps
GB485898A (en) Improvements in vacuum electric incandescent lamps
GB417986A (en) Improvements in and relating to electric lamps
GB1030109A (en) Improvements in or relating to the threading of wires or the like through apertures
AU2344235A (en) Improvements inthe manufacture of coiled coil filaments for electric incandescent lamps
GB344865A (en) Improvements in and relating to incandescent electric lamps
GB410955A (en) Improvements in or relating to conductors for conveying electric currents through vitreous envelopes
GB691650A (en) Low-voltage incandescent lamp, especially for christmas-tree illumination consistingof series-connected lamps
GB150484A (en) Improvements in incandescent electric lamps
GB403428A (en) Improvements in electric discharge devices
GB551425A (en) Improvements in and relating to electric incandescent lamps
GB725761A (en) Improvements in or relating to discharge lamps
GB551142A (en) Improvements in or relating to incandescent electric lamps
GB446480A (en) Improvements in or relating to electric incandescent lamps for use in mines and like locations
GB426085A (en) Improvements in and relating to electric vapour or gaseous discharge devices
GB907437A (en) Improvements in or relating to electric lamps and to lampholders therefor
GB550375A (en) Improvements in and relating to vapour lamps
GB379090A (en) Improvements in or relating to thermionic valve holders
GB381904A (en) Improvements in electric discharge lamps