"The "steam-jet" or "blastpipe", which served to increase the draw of air through pipes, and which was applied to improve mine and sewerage ventilation, to increase the efficiency of steam-powered stationary engines and blast furnaces, and road or rail vehicles.After the Rainhill trials of 1829, there was considerable controversy as to the genesis of this invention since it became associated in the mind of the public with George Stephenson—probably through the agency of Samuel Smiles' biography of that man.