The GWR Autocoach.
https://www.youtube.com/watch?v=whp50RnZ5s8
I... didn't know this was a thing. Always figured it was possible but didn't know some madman made it a thing. Brings up the question if anyone tried this method to link 2 locomotives, Smooth power application from both loco's simultaneously while only needing 1 extra fireman (witch if memory serves was the cheaper of the 2 crew anyway) for double the power and some linkage maintenance and no fiddly flexible steam joints like a mallet or garratt type. SOMEONE had to think about it.
https://www.youtube.com/watch?v=whp50RnZ5s8
I... didn't know this was a thing. Always figured it was possible but didn't know some madman made it a thing. Brings up the question if anyone tried this method to link 2 locomotives, Smooth power application from both loco's simultaneously while only needing 1 extra fireman (witch if memory serves was the cheaper of the 2 crew anyway) for double the power and some linkage maintenance and no fiddly flexible steam joints like a mallet or garratt type. SOMEONE had to think about it.