| Year | 1939 |
| Date | 15-Jun |
| Volume | 80 |
| Issue | 1,988 |
| Page | 689 |
| Category | Stationary Engine |
| Part | |
| Title | High Speed Engine |
| Author | T.W.Geary |
| Notes | Out-of-the-ordinary single acting engine with new type of valve-gear. Completed engine, elevation in section, details, the standard, connecting-rod |