I have a Jensen 35, it's overhead but it's a single acting engine. I usually call single acting engines
spitters, cause they do. There is one by Wilesco called the D14, they look like this,
https://www.ministeam.com/acatalog/Wilesco-D14-Steam-Engine-WI_D_14.html#SID=234 Some times they show up on Ebay with a roof over it and four power tools all set up as a work station.
I think those are called D141 Work Station.