. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . the conductor in a glass case,exhausting the atmosphere from such case,heating the conductor by an electric current,and then hermetically sealing such glass case,substantially as set forth. 95 3. The combination, in an electric lamp, of ahermetically-sealed vacuum-case made entire-ly of glass, conducting-wires passing throughthe glass and around which the glass is melt-ed, aud an incandescent bodyformed of a py-ro-insulated wire and an infusible core for thesame, substantially as set forth. 4. The combination of a t
. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . the conductor in a glass case,exhausting the atmosphere from such case,heating the conductor by an electric current,and then hermetically sealing such glass case,substantially as set forth. 95 3. The combination, in an electric lamp, of ahermetically-sealed vacuum-case made entire-ly of glass, conducting-wires passing throughthe glass and around which the glass is melt-ed, aud an incandescent bodyformed of a py-ro-insulated wire and an infusible core for thesame, substantially as set forth. 4. The combination of a transparent vacuum-case, a continuous conductor forming an elec-tric caudle, and a second transparent case 10forming a closed chamber, for the purpose setforth. 5. The combination of the conductor cZ, form-ing an electric candle, the transparent sealedcase B, the transparent case c, inclosing the case 11B, and the thermostatic regulator nop B, sub-stantially as set forth. Signed by me this 12th day of April, A. THOMAS A. EDISON. Witnesses: S. L. Griffin,Edwin M. 2 Sheets—Sheet 1. T. A. No. 227,679. Patented May 18, 1880.
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