In 1864 Alexander Rider filed a patent for a Rotary Steam Engine. He then turned his interest to the promising Hot Air Engine and became a world leader in this field.
After many trials and errors Alexander Rider built one of the best and most famous Hot Air Engine (patent of 1879 and 1880).
| Year | Patent Download | Comment | Title | Engine type |
|---|---|---|---|---|
| 1871 | Rider patent #111,087 | Improvements in Hot Air Engines | ||
| 1871 | Rider patent #111,088 | Improvements in Hot Air Engines | ||
| 1871 | Rider patent #120,325 | Improvements in Hot Air Engines | ||
| 1872 | Rider patent #128,979 | Improvements in Hot Air Engines | ||
| 1875 | Rider patent #158,525 | Improvements in Air Vacuum Engines | ||
| 1875 | Rider patent #167,568 | Forerunner of the wellknown Rider Air Engine | Improvements in Air Engines | |
| 1878 | Rider patent #206,356 | Forerunner of the wellknown Rider Air Engine | Improvements in Air Engines | |
| 1879 | Rider patent #220,309 | The wellknown Rider Air Engine | Improvements in Air Engines | Closed cycle, External combustion, open furnace |
| 1880 | Rider patent #345,450 | Improvement of the previous Engine | Air Engines | |
| 1880 | Rider patent #Re 9,353 | Reissue of patent #111,088 | Air Engines | |
| 1880 | Rider patent #Re 9,359 | Reissue of patent #128,979 | Hot Air Engines | |
| 1880 | Rider patent #11,593 | Improvements in Air Engines |