| Year | 1956 |
| Date | 19-Apr |
| Volume | 114 |
| Issue | 2,865 |
| Page | 646 |
| Category | Steam |
| Part | |
| Title | Simplex Valve Gears |
| Author | E.G.Rix |
| Notes | Reversing the motion, not always self-strarting, the Cameron engine, effect of irregular speed, function of orifices, self-starting gear, trouble free running, the Lamont gear, will make a good model, Richardson's valve gear, will work under stress |