Adolph Giesl-Gieslingen was an Austrian locomotive designer and engineer.
Smokebox with Giesl-ejector on the ČSD 534.0432 in museum Lužná u Rakovníka, Czech Republic
A Giesl ejector is a suction draught system for steam locomotives that works on the same principle as a feedwater injector. This ejector was invented in 1951 by the Austrian engineer, Dr. Adolph Giesl
Steam locomotive with Giesl flat ejector in Austria
Austrian 0-12-0T and 0-6-2T fitted with Giesl ejectors, Eisenerz depot, August 1971
Ejector from Edward Thomas, on display in the Narrow Gauge Railway Museum