| Year | 1925 |
| Date | 07-May |
| Volume | 52 |
| Issue | 1,254 |
| Page | 507 |
| Category | Nautical |
| Part | |
| Title | A Three-Cylinder Single-Acting Uniflow Reversing Launch Engine |
| Author | T.W.Averill |
| Notes | Part sectional side and end elevations, brass bushes for cylinders, suggested design for larger engine cylinder, diagram showing cams, methods of effecting steam distribution, lever and cams for lifting tappet rods, oil filter and crankcase breather |