I don't know how you make espresso, but one made with this machine, I definitely would never, ever drink
It's for people who have nothing to do with farming quite hard to guess. Another hint, this machine is from around 1930s and was made by DIA xxxxxxfabrik Hammelrath & Schwenzer GmbH & Co. KG
Also not exactly, but to come to an end, it is a liquid manure membrane pump, in German "Jauchepumpe" to empty a cesspit. Not exactly a delightful job, but anyway better than using buckets
This model is a DIA-D1210 from around 1930 and according to the still existing company, not build anymore since 40 years. Unfortunately they don't have any documents anymore, so I have to continue building from the set of photos we made.
I think it might be a nice accessory for farming sceneries...