Elder, John


Elder, John

biographical name

(born March 8, 1824, Glasgow, Scot.—died Sept. 17, 1869, London, Eng.) Scottish marine engineer. In 1854 he developed the marine compound steam engine (using both high- and low-pressure steam), which enabled seagoing vessels to save 30–40% of the coal they had been burning and helped make practical long voyages on which refueling was impossible.

This entry comes from Encyclopædia Britannica Concise.
For the full entry on Elder, John, visit Britannica.com.

Seen & Heard

What made you look up Elder, John? Please tell us what you were reading, watching or discussing that led you here.