| Year | 1940 |
| Date | 24-Oct |
| Volume | 83 |
| Issue | 2,059 |
| Page | 310 |
| Category | Hot Air |
| Part | |
| Title | Practical Notes on Hot Air Engines |
| Author | "Artificer" |
| Notes | An engine built from simple materials, method of construction, water jacket, main bearings, displacer chamber, elevations, power cylinder, accuracy essential, crankshaft and motion work, plan, eccentric for operating displacer, a weighty flywheel |