The Walschaert locomotive valve gear; a practical treatise on the locomitive valve actuating mechanism originally invented by Egide Walschaerts, with the history of its development by American and European engine designers, and its evolution into the mechanically correct locomotive valve gear of the present day T Technology
Warm-blast steam-boiler furnace : a report upon a series of trials of an apparatus for transferring a part of the heat of escaping flue-gases to the furnace by warming the entering air T Technology
