The Mesta Machine Company manufactured Una-Flow (know today as “uniflow“) steam engines for use in rolling mills and power plants as an alternative to other engines that they produced. Una-flow engines use steam that flows through the engine’s cylinders in one direction, hence the name. This method of operation gains thermal efficiency by maintaining a thermal gradient along the length of the cylinder and uses less steam than other engines.
All images are from the 1919 edition of “Plant and product of the Mesta Machine Company, Pittsburgh, Pennsylvania“.
Other articles in this series:
Mesta Memories #10 – Gas Blowing Engines
Regarding the Images in “Mesta Memories”
Mesta Memories #11 – Steam Blowing Engines
Mesta Memories #12 – Gas Power Engines
It's a piston port two stroke. Ingenious.
good…. enough said.