| Year | 1947 |
| Date | 02-Jan |
| Volume | 96 |
| Issue | 2,382 |
| Page | 12 |
| Category | Workshop |
| Part | |
| Title | Worm Gear - Principles And Notes |
| Author | F.L.Berry |
| Notes | Terms, core diameter, lead helix, R.H.U. type Radicon worm reducer, applied to sand washing machine, teeth, revolving wedges, examples, rubbing speed and co-efficient of friction, cooling of oil, materials, speed reduction |