| Year | 1953 |
| Date | 06-Aug |
| Volume | 109 |
| Issue | 2,724 |
| Page | 157 |
| Category | Electrical |
| Part | |
| Title | An Electromagnetic Clutch |
| Author | R.F.Stock |
| Notes | Testing, the completed coil, arrangements for ensuring complete demagnetisation, torque plotted against applied e.m.f., decay in voltage and torque, proposed application, applications, reversing gearbox, hub details for engine-mounted unit |