| Year | 1919 |
| Date | 11-Sep |
| Volume | 41 |
| Issue | 959 |
| Page | 245 |
| Category | Lathe |
| Part | |
| Title | A Back Gear Reverse Motion and Hollow Mandrel Designed for the Drummond 4-in. round Bed Lathe |
| Author | W.H.Bass |
| Notes | Plan & elevation of the device used for cutting the gears, the hollw mandrel, arrangement of the back gear, elevation of quadrant, mandrel, back-gear, end view showing backgear fitted, another view showing additions, quadrant bracket, reverse motion, details of the bracket & eccentric forming part of the back gear, details of the quadrant for the reverse gear, some of the gears used when back gear was added to lathe |