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Unformatted text preview: Incandescent Filament Lamp Joseph Swan (1847) Patent By J. W. Starr (1845) “The application of continuous metallic and carbon
conductors, intensely heated by the passage of a
current of electricity, to the purpose of illumination” Thin Sheet Of Platinum Foil Torricellian Vacuum Disliked The Use Of A Platinum Filament
Carbon Filament In A Vacuum Appealed To Him Incandescent Strip Of Carbon - 0.2” Wide, 1.5” Long Incandescent Filament Lamp
Incandescent Joseph Swan Publicly Displayed December 18, 1878 Not In Operation
Never Patented Idea Though Idea Was
Anticipated & thus, Not
Patentable Carbon Filament Incandescent Filament Lamp
Incandescent Joseph Swan First Successful Filament
Lamp Carbon Filament Thickened Filament Ends Evacuated Glass Bulb Platinum Filament Supports Glass Supports For
Filament Holders Platinum End Wires Exhausting “Pip” Applied For Patent November 27, 1880 Incandescent Filament Lamp Thomas Alva Edison (1847-1931) Initially Lamp Filaments From Carbon Impossible Thought He Was Successful With Platinum Switched To Carbon (1879) Successful February, 1880 Applied For Patent ???????? Developed Ideas For Commercializtion
Joined With Swan To Form
Joined Ediswan Electric Co. Incandescent Filament Lamp Edison Carbon Filament Lamp (1881) Edison Carbon Filament Lamp (1882) Edison Lamp Cluster (1884) ...
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This note was uploaded on 11/22/2011 for the course EGN 2031 taught by Professor Staff during the Summer '08 term at University of South Florida - Tampa.
- Summer '08