| Year | 1916 |
| Date | 07-Sep |
| Volume | 35 |
| Issue | 802 |
| Page | 145 |
| Category | Lathe |
| Part | |
| Title | A few Notes on the Construction of an Internal Reduction Gear for a Drummond 4-in. Lathe |
| Author | G.C.Orbet |
| Notes | The gear as fitted to the lathe, the gear dismantled, gneral arrangement showing alterations from the original design, details of locking pin, of gear wheels, temporary gear cutting arrangement |