Napier, has not only made cars, aero engines and turbo blowers, but also minting machines and beam engines.
The National Mint Museum at Madrid has plans of minting machines and a beam engine made by Napier & Son.
The museum has kindly supplied these photos of the beam engine made in 1858.
Beam engine in Madrid Mint Museum. More info when we’ve deciphered the Spanish texts and had more contacts with Madrid.