. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . in position upon 6, B and A being 65then united and A exhausted, in the mannermore fully described in United States Pat-ent No. 230,255, granted to me. This con-struction furnishes a lamp in which the incan-descent material is in a line giving a straight 70line of light, the arm D supporting the upperend at a proper height. The carbon, beingflexible, bowsslightly upon expansion underthe influence of heat, avoiding the danger offracture of the carbon or the destruction of its 75union with the conductors, which has be
. Collection of United States patents granted to Thomas A. Edison, 1869-1884 . in position upon 6, B and A being 65then united and A exhausted, in the mannermore fully described in United States Pat-ent No. 230,255, granted to me. This con-struction furnishes a lamp in which the incan-descent material is in a line giving a straight 70line of light, the arm D supporting the upperend at a proper height. The carbon, beingflexible, bowsslightly upon expansion underthe influence of heat, avoiding the danger offracture of the carbon or the destruction of its 75union with the conductors, which has besetformer attempts in this line. What I claim is— The combination, with the carbon-support-ing bulb, of a glass arm rising ab >ve the buib 80and supporting one end of a straight carbonand the conductor leading thereto, substan-tially as set forth. This specification signed and witnessed this10th day of August, 1880. THOS. A. EDISON. Witnesses: Wm. Carman,Otto A. Moses. (No Model.) 2 Sbeets-^Sheet 1. T. A. EDISON. ELECTRICAL GOVERNOR. No. 251,547. Patented Dec. 27, WITNESSES: INVENTOR:ATTORNEYS. N. PETERS. Photo-Uhographer, Washington, D. C. (No Model.) 2 Sheets—Sheet 2. T. A. EDISON. ELECTRICAL GOVERNOR. No. 251,547. Patented Deo. 27,1881.
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Keywords: ., boo, bookcentury1800, booksubjectinventions, booksubjecttelephone
