| Year | 1942 |
| Date | 20-Aug |
| Volume | 87 |
| Issue | 2,154 |
| Page | 178 |
| Category | Locomotive |
| Part | |
| Title | 1831. A 3 1/2in. Gauge I.C. Engine-driven Locomotive |
| Author | Edgar T.Westbury |
| Notes | Cutting the transmission worm gearing. A different problem, skew gearing, blank diameters of worm-wheel and pinion, cutting skew gears, merits of worm gearing, producing worm gearing, an experimental worm-gear and pinion |