| Year | 1985 |
| Date | 19-Apr |
| Volume | 154 |
| Issue | 3,751 |
| Page | 466 |
| Category | Hot Air |
| Part | 5 |
| Title | Heat Engines. A Heinrici Hot Air Engine |
| Author | Ian Bradley |
| Notes | The displacer rod eye, the furnace, making the furnace, the pyrophilite standards, the connecting links, lubrication, the displacer rod, rocker arm bearing |