Origin of Drummond light
1835–45; named after Capt. T. Drummond (1797–1840), British engineer
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
"torch that burns calcium oxide (lime) and gives off intense white light," 1854, named for Scottish engineer Capt. Thomas Drummond, R.E., (1797-1840), who invented it c.1825.
Online Etymology Dictionary, © 2010 Douglas Harper