| Year | 1949 |
| Date | 10-Nov |
| Volume | 101 |
| Issue | 2,529 |
| Page | 615 |
| Category | Locomotive |
| Part | |
| Title | Automatic Expansion Control for Locomotives |
| Author | G.Rhodes |
| Notes | Centralising linkage details, force pump, relief-valve, spring jigger, control connecting relief valve, piping |