The well-known Stirling engines.
| Year | Patent Download | Comment | Title | Engine type |
|---|---|---|---|---|
| 1816 | Stirling patent #4081 | Reported by THE ENGINEER | Regenerator and Hot Air Engines | Closed cycle, open furnace, external combustion |
| 1827 | Stirling patent of 1827 | Description from GALLOWAY p.667 | Air Engines | Closed cycle, open furnace, external combustion |
| 1841 | Stirling patent #8652 | Patent Abstract by MECHANIC's MAGAZINE. Improvements of the 1827 Air Engine. | Certain Improvements in Air Engine | Closed cycle, open furnace, external combustion |