| Year | 1977 |
| Date | 20-May |
| Volume | 143 |
| Issue | 3,561 |
| Page | 580 |
| Category | Steam |
| Part | |
| Title | A Valve-Less Steam Engine |
| Author | R.L.Tingey |
| Notes | Moving cylinder principle, the steam cycle, the prototype engine, testing the prototype, future developments, conclusion, footnote |