Chambers Imperial.
I believe one of us has one in captivity, possibly 58Limited, but I could be mistaken.
The Chambers Imperial was designed for larger-than-residential scale use, such as restaurants, hotels, churches, dining halls, etc. Imagine if Cadillac or even Rolls Royce made a huge station wagon or a bus.
The kitchen pictured looks to be in a large historic house. Note the bell-box to the left of the door. It has little flags that signal servants. A button in the house is pushed, the bell chimes, and a flag tells the servant which button was pushed, and where service is requested.
A machine fit for the most serious cooks!
Dave