| Year | 1941 |
| Date | 24-Jul |
| Volume | 85 |
| Issue | 2,098 |
| Page | 73 |
| Category | Workshop |
| Part | |
| Title | A Three-Speed Sensitive Drill |
| Author | "Ned" |
| Notes | Lever links and pivot pins, spacing bushes, Jockey pulleys, countershaft, lever clamping nut, countershaft bracket, fast and loose pulleys, belting, belt shifting control rod, a modified pulley arrangement, belt modification by H.Carr, spindle speeds |