| Year | 1935 |
| Date | 17-Oct |
| Volume | 73 |
| Issue | 1,797 |
| Page | 382 |
| Category | Pump |
| Part | |
| Title | Modified Steam Pump Valve Gears |
| Author | H.R.Langman |
| Notes | Valve gear as originally fitted, rearrangement of elements of vavle gear, modified pendulum lever, built up pendulum lever |