Marsh swinging boiler and trunion port gland
Channel: A. E. Karnes
Date: 2024-02-18

Explaining the original swinging boiler concept designed and prototyped by Sylvester Marsh for the Mount Washington Cog Railway.   I did this animation for @ChristheXelent  for the episode of his series "Steam locomotives in profile in the USA"  covering that railway, please go and show him some patronage as the series is excellently put together. 

  This commissioned work used on my channel with his permission.