Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

That´s pretty cool Jim, they´re certainly quite effective, for what they are.

Used one myself as a kid, to pump water from the creek to the cattle

Think the invention is thousand years old or more, at work we have large cylinder brass versions as "last stand" emergency pumps, and have seen a centuries old one with a twin halves wooden barrel tied together with leather straps on a museum as well.

Should someone not want to engage in a DIY project:
https://www.ebay.com/itm/143200386159?epid=24032227375