Some time ago I seen a picture and video of a Bernays engine on Lindsay Publishing website that has an interesting motion. I do not know anything about the engine, whether the originals were a successful design or not. On the website it indicated that the engine had been exhibited by Joseph Bernays of London at the Paris Universal Exposition in 1878. However it looked like a good canidate for a model so I built one. It was finished yesterday. It runs beautiful, and will throttle down so you can see the parts in motion other than a blur. It will be a fine exhibit for the display room.
Just in case you are wondering, that dark thing on the bottom is a "Footing". I have heard all big engines need a footing to support them.