| Year | 1955 |
| Date | 16-Jun |
| Volume | 112 |
| Issue | 2,821 |
| Page | 666 |
| Category | Talking about steam- |
| Part | 30 |
| Title | The Evolution of the Portable Engine |
| Author | W.J.Hughes |
| Notes | Hartnell adjustable eccentric as used by Marshall's of Gainsborough, crankshaft governor, stop-valve of Ruston Proctor portable 1873, other methods, other devices at Vienna, Ruston Proctor's steam-heated expanding stay |