| Year | 1953 |
| Date | 22-Oct |
| Volume | 109 |
| Issue | 2,735 |
| Page | 489 |
| Category | More Utility Steam Engines |
| Part | |
| Title | The "Unicorn" mill engine |
| Author | Edgar T.Westbury |
| Notes | Method of keying wrist-pin and knuckle-pins, a "clawfoot" spanner, cylinder assembly, horizontal section of cylinder, valve timing, angular position of eccentric, "Elementary, my Dear Watson!" Keying the eccentric sheave, fitting studs |