| Year | 1990 |
| Date | 20-Apr |
| Volume | 164 |
| Issue | 3,871 |
| Page | 482 |
| Category | Beam Engine |
| Part | 1 |
| Title | Non Rotative Beam Engines |
| Author | Roy Simmons |
| Notes | The historical development and their operation reviewed. The Newcomen engine, Watt's engine improvements, Cornish engineers, Crofton beam engines |