| Year | 1987 |
| Date | 19-Jun |
| Volume | 158 |
| Issue | 3,803 |
| Page | 698 |
| Category | Workshop |
| Part | 11 |
| Title | Spring Design and Manufacture |
| Author | Tubal Cain (T.D.Walshaw) |
| Notes | The heretical method, an apology, torsion springs, the coil spring in torsion, deflection, "power" of a torsion spring, example, practical aspects of torsion springs |