It was used as an air compressor for many years at a tractor manufacturing facility. The compressed air was used to run power tools all over the factory. In the 1970s, it was taken offline and modern air compressors were put in its place. These modern devices were not as efficient and were prone to breakdowns, so they fired this ancient beast up again and it ran until the factory closed.

The biggest corlis engine I personally seen running in active service was in the Hungarian Floor mill in Denver in the mid 60's posted video on my KZread channel.

Great engine!

I have seen a lot of corlis engine running,setting cold in old steam plants waiting to be busted of for scrap not a good sight

Which it is his function?