Somebody help me out; at ~7:30, what is that rocking device on the boat - some kind of pump??
“Somebody help me out; at ~7:30, what is that rocking device on the boat - some kind of pump??”
If I’m not mistaken it is part of the steam engine. I believe the steam is working the whatever you call it which is in turn turning the shafts that spin the side paddle wheels.
“Walking Beam” steam engine. Pretty much old fashioned even for 1911, but still being built for river craft until the 1940’s.