“Bad Boy” Twin Vertical Marine Steam Engine

[chucketn]

My buddy has made patterns for casting an engine called the “Bad Boy”. It’s a vertical twin marine steam engine. Unfortunately he has lost the plans for it. Does anyone have info on this engine? Anyone recognize it?
Chuck

 

[chucketn]

My buddy finally remembered the source of the above patterns. They're from a book "Model Making", Edited by Raymond Francis Yates, published in 1919, and available on Google Books.

Chuck