| Year | 1940 |
| Date | 14-Mar |
| Volume | 82 |
| Issue | 2,027 |
| Page | 262 |
| Category | Lathe |
| Part | |
| Title | Internal Back-Gear for a Small Lathe |
| Author | William Barlas |
| Notes | Useful accessory. The cone, the gear assembled in headstock, general arrangement, the fixed plate, centre gear wheel, planet wheels and pinions, fixed pinion |