[Nos. 145-160] Steam Power Group, Engines, Turbines
Trunk Type Engine
William M Clark
38.7cm x 38.7cm
Cast aluminum and wood (painted) on a vertical panel.
For educational use only. All rights reserved by the contributor(s) and publisher(s).
engine, slider crank
This is a simple form of the early type of trunk or atmospheric engine. Steam is admitted in bottom part of cylinder A through part B causing piston to rise. At end of up stroke a jet of cold water is thrown into cylinder A through D, cooling steam and causing vacuum to draw piston down. The inertia stored in heavy, fly wheel on shaft during up stroke of piston, causes crank C to travel over center for down stroke. It is now obsolete but was generally used before the introduction of the slide valve engine (See No. 154).
[Virginia Downward & William M. Clark, 1930]
[Editorís Note: The piston and crank engine uses a slider-crank mechanism that can be found in the Cornell Reuleaux Models C-1, C-4, D-1. FCM]