This article is not about Edwin Davis, discoverer in 1846 of the Serpent Mound

Edwin F. Davis was the first ’state electrician’ for the State of New York and finalized many features of the electric chair.
He executed, among other people, both William Kemmler and Martha M. Place.

Davis held a patent on certain features of the electric chair. He received U.S. Patent No. 587,649, for his “Electrocution-Chair”, in August 3, 1897.

See also

List of executioners