. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . n position in A and A. F is a socket or cup, through the bottom ofwhich, by a tight joint, passes the end of C,the end of D resting in the cup. At the topof the cup a washer, E, of soft rubber, fills 40tightly the space between A and the innerwall of the cup F, the space in the cup beingfilled with mercury H or other suitable liquid. The lamp so put together is exhausted and-then sealed at a iu the usual manner, the com- 45bination of the cup F, plugs or washers D andE, and the mercury H forming a reliable seal. Wha
. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . n position in A and A. F is a socket or cup, through the bottom ofwhich, by a tight joint, passes the end of C,the end of D resting in the cup. At the topof the cup a washer, E, of soft rubber, fills 40tightly the space between A and the innerwall of the cup F, the space in the cup beingfilled with mercury H or other suitable liquid. The lamp so put together is exhausted and-then sealed at a iu the usual manner, the com- 45bination of the cup F, plugs or washers D andE, and the mercury H forming a reliable seal. What I claim is— The combination, with the neck of the in-closing-globe and the carbon-supporting tube, 50of a cup containing a liquid receiving the endof the neck of the inclosing-globe, and throughwhich passes the carbon-supporting tube, andwashers or plugs filling the space between theneck and cup and the neck and tube, substan- 55tially as set forth. This specification signed and witnessed this7th dav of August, 1880. THOS. A. EDISON. Witnesses: Wm. Carman,Otto A. (No Model.) 2 Sheets—Sheet 1. T. A. the Generation of Electric Currents. No. 239,374. Patented March 29,1881.
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Keywords: ., boo, bookcentury1800, booksubjectinventions, booksubjecttelephone
