| Year | 1930 |
| Date | 11-Dec |
| Volume | 63 |
| Issue | 1,544 |
| Page | 575 |
| Category | Stationary Engine |
| Part | |
| Title | An Old Model Horizontal Steam Engine of Uncommon Type |
| Author | W.W.Mason |
| Notes | Valve operated by tappets, cylinder dismantled showing central steam-port, "breather" and slide-valve |